bfgminer/miner.c

/*
 * Copyright 2011-2013 Con Kolivas
 * Copyright 2011-2013 Luke Dashjr
 * Copyright 2012-2013 Andrew Smith
 * Copyright 2010 Jeff Garzik
 *
 * This program is free software; you can redistribute it and/or modify it
 * under the terms of the GNU General Public License as published by the Free
 * Software Foundation; either version 3 of the License, or (at your option)
 * any later version.  See COPYING for more details.
 */

#include "config.h"

#ifdef HAVE_CURSES
#ifdef USE_UNICODE
#define PDC_WIDE
#endif
// Must be before stdbool, since pdcurses typedefs bool :/
#include <curses.h>
#endif

#include <ctype.h>
#include <float.h>
#include <limits.h>
#include <locale.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <stdbool.h>
#include <stdint.h>
#include <unistd.h>
#include <sys/time.h>
#include <time.h>
#include <math.h>
#include <stdarg.h>
#include <assert.h>
#include <signal.h>
#include <wctype.h>

#include <sys/stat.h>
#include <sys/types.h>
#include <dirent.h>

#ifdef HAVE_PWD_H
#include <pwd.h>
#endif

#ifndef WIN32
#include <sys/resource.h>
#include <sys/socket.h>
#if defined(HAVE_LIBUDEV) && defined(HAVE_SYS_EPOLL_H)
#include <libudev.h>
#include <sys/epoll.h>
#define HAVE_BFG_HOTPLUG
#endif
#else
#include <winsock2.h>
#include <windows.h>
#include <dbt.h>
#define HAVE_BFG_HOTPLUG
#endif
#include <ccan/opt/opt.h>
#include <jansson.h>
#include <curl/curl.h>
#include <libgen.h>
#include <sha2.h>
#include <utlist.h>

#include <blkmaker.h>
#include <blkmaker_jansson.h>
#include <blktemplate.h>

#include "compat.h"
#include "deviceapi.h"
#include "logging.h"
#include "miner.h"
#include "adl.h"
#include "driver-cpu.h"
#include "driver-opencl.h"
#include "scrypt.h"

#ifdef USE_AVALON
#include "driver-avalon.h"
#endif

#ifdef HAVE_BFG_LOWLEVEL
#include "lowlevel.h"
#endif

#if defined(unix) || defined(__APPLE__)
	#include <errno.h>
	#include <fcntl.h>
	#include <sys/wait.h>
#endif

#ifdef USE_SCRYPT
#include "scrypt.h"
#endif

#if defined(USE_AVALON) || defined(USE_BITFORCE) || defined(USE_ICARUS) || defined(USE_MODMINER) || defined(USE_NANOFURY) || defined(USE_X6500) || defined(USE_ZTEX)
#	define USE_FPGA
#endif

enum bfg_quit_summary {
	BQS_DEFAULT,
	BQS_NONE,
	BQS_DEVS,
	BQS_PROCS,
	BQS_DETAILED,
};

struct strategies strategies[] = {
	{ "Failover" },
	{ "Round Robin" },
	{ "Rotate" },
	{ "Load Balance" },
	{ "Balance" },
};

static char packagename[256];

bool opt_protocol;
bool opt_dev_protocol;
static bool opt_benchmark;
static bool want_longpoll = true;
static bool want_gbt = true;
static bool want_getwork = true;
#if BLKMAKER_VERSION > 1
struct _cbscript_t {
	char *data;
	size_t sz;
};
static struct _cbscript_t opt_coinbase_script;
static uint32_t template_nonce;
#endif
#if BLKMAKER_VERSION > 0
char *opt_coinbase_sig;
#endif
static enum bfg_quit_summary opt_quit_summary = BQS_DEFAULT;
static bool include_serial_in_statline;
char *request_target_str;
float request_pdiff = 1.0;
double request_bdiff;
static bool want_stratum = true;
bool have_longpoll;
int opt_skip_checks;
bool want_per_device_stats;
bool use_syslog;
bool opt_quiet_work_updates = true;
bool opt_quiet;
bool opt_realquiet;
int loginput_size;
bool opt_compact;
bool opt_show_procs;
const int opt_cutofftemp = 95;
int opt_hysteresis = 3;
static int opt_retries = -1;
int opt_fail_pause = 5;
int opt_log_interval = 20;
int opt_queue = 1;
int opt_scantime = 60;
int opt_expiry = 120;
int opt_expiry_lp = 3600;
unsigned long long global_hashrate;
static bool opt_unittest = false;
unsigned long global_quota_gcd = 1;
time_t last_getwork;

#ifdef HAVE_OPENCL
int opt_dynamic_interval = 7;
int nDevs;
int opt_g_threads = -1;
#endif
#ifdef USE_SCRYPT
static char detect_algo = 1;
bool opt_scrypt;
#else
static char detect_algo;
#endif
bool opt_restart = true;

#ifdef USE_LIBMICROHTTPD
#include "httpsrv.h"
int httpsrv_port = -1;
#endif
#ifdef USE_LIBEVENT
int stratumsrv_port = -1;
#endif

const
int rescan_delay_ms = 1000;
#ifdef HAVE_BFG_HOTPLUG
bool opt_hotplug = 1;
const
int hotplug_delay_ms = 100;
#else
const bool opt_hotplug;
#endif
struct string_elist *scan_devices;
static struct string_elist *opt_set_device_list;
bool opt_force_dev_init;
static struct string_elist *opt_devices_enabled_list;
static bool opt_display_devs;
int total_devices;
struct cgpu_info **devices;
int total_devices_new;
struct cgpu_info **devices_new;
bool have_opencl;
int opt_n_threads = -1;
int mining_threads;
int num_processors;
#ifdef HAVE_CURSES
bool use_curses = true;
#else
bool use_curses;
#endif
#ifdef HAVE_LIBUSB
bool have_libusb;
#endif
static bool opt_submit_stale = true;
static float opt_shares;
static int opt_submit_threads = 0x40;
bool opt_fail_only;
int opt_fail_switch_delay = 300;
bool opt_autofan;
bool opt_autoengine;
bool opt_noadl;
char *opt_api_allow = NULL;
char *opt_api_groups;
char *opt_api_description = PACKAGE_STRING;
int opt_api_port = 4028;
bool opt_api_listen;
bool opt_api_mcast;
char *opt_api_mcast_addr = API_MCAST_ADDR;
char *opt_api_mcast_code = API_MCAST_CODE;
char *opt_api_mcast_des = "";
int opt_api_mcast_port = 4028;
bool opt_api_network;
bool opt_delaynet;
bool opt_disable_pool;
bool opt_disable_client_reconnect = false;
static bool no_work;
bool opt_worktime;
bool opt_weighed_stats;

char *opt_kernel_path;
char *cgminer_path;

#if defined(USE_BITFORCE)
bool opt_bfl_noncerange;
#endif
#define QUIET	(opt_quiet || opt_realquiet)

struct thr_info *control_thr;
struct thr_info **mining_thr;
static int watchpool_thr_id;
static int watchdog_thr_id;
#ifdef HAVE_CURSES
static int input_thr_id;
#endif
int gpur_thr_id;
static int api_thr_id;
static int total_control_threads;

pthread_mutex_t hash_lock;
static pthread_mutex_t *stgd_lock;
pthread_mutex_t console_lock;
cglock_t ch_lock;
static pthread_rwlock_t blk_lock;
static pthread_mutex_t sshare_lock;

pthread_rwlock_t netacc_lock;
pthread_rwlock_t mining_thr_lock;
pthread_rwlock_t devices_lock;

static pthread_mutex_t lp_lock;
static pthread_cond_t lp_cond;

pthread_cond_t gws_cond;

bool shutting_down;

double total_rolling;
double total_mhashes_done;
static struct timeval total_tv_start, total_tv_end;
static struct timeval miner_started;

cglock_t control_lock;
pthread_mutex_t stats_lock;

static pthread_mutex_t submitting_lock;
static int total_submitting;
static struct work *submit_waiting;
notifier_t submit_waiting_notifier;

int hw_errors;
int total_accepted, total_rejected;
int total_getworks, total_stale, total_discarded;
uint64_t total_bytes_rcvd, total_bytes_sent;
double total_diff1, total_bad_diff1;
double total_diff_accepted, total_diff_rejected, total_diff_stale;
static int staged_rollable;
unsigned int new_blocks;
unsigned int found_blocks;

unsigned int local_work;
unsigned int total_go, total_ro;

struct pool **pools;
static struct pool *currentpool = NULL;

int total_pools, enabled_pools;
enum pool_strategy pool_strategy = POOL_FAILOVER;
int opt_rotate_period;
static int total_urls, total_users, total_passes;

static
#ifndef HAVE_CURSES
const
#endif
bool curses_active;

#ifdef HAVE_CURSES
#if !(defined(PDCURSES) || defined(NCURSES_VERSION))
const
#endif
short default_bgcolor = COLOR_BLACK;
static int attr_title = A_BOLD;
#endif

static
#if defined(HAVE_CURSES) && defined(USE_UNICODE)
bool use_unicode;
static
bool have_unicode_degrees;
static
wchar_t unicode_micro = 'u';
#else
const bool use_unicode;
static
const bool have_unicode_degrees;
static
const char unicode_micro = 'u';
#endif

#ifdef HAVE_CURSES
#define U8_BAD_START "\xef\x80\x81"
#define U8_BAD_END   "\xef\x80\x80"
#define AS_BAD(x) U8_BAD_START x U8_BAD_END

bool selecting_device;
unsigned selected_device;
#endif

static char current_block[40];

/* Protected by ch_lock */
static char *current_hash;
static uint32_t current_block_id;
char *current_fullhash;

static char datestamp[40];
static char blocktime[32];
time_t block_time;
static char best_share[ALLOC_H2B_SHORTV] = "0";
double current_diff = 0xFFFFFFFFFFFFFFFFULL;
static char block_diff[ALLOC_H2B_SHORTV];
static char net_hashrate[ALLOC_H2B_SHORT];
double best_diff = 0;

static bool known_blkheight_current;
static uint32_t known_blkheight;
static uint32_t known_blkheight_blkid;
static uint64_t block_subsidy;

struct block {
	char hash[40];
	UT_hash_handle hh;
	int block_no;
};

static struct block *blocks = NULL;


int swork_id;

/* For creating a hash database of stratum shares submitted that have not had
 * a response yet */
struct stratum_share {
	UT_hash_handle hh;
	bool block;
	struct work *work;
	int id;
};

static struct stratum_share *stratum_shares = NULL;

char *opt_socks_proxy = NULL;

static const char def_conf[] = "bfgminer.conf";
static bool config_loaded;
static int include_count;
#define JSON_INCLUDE_CONF "include"
#define JSON_LOAD_ERROR "JSON decode of file '%s' failed\n %s"
#define JSON_LOAD_ERROR_LEN strlen(JSON_LOAD_ERROR)
#define JSON_MAX_DEPTH 10
#define JSON_MAX_DEPTH_ERR "Too many levels of JSON includes (limit 10) or a loop"

char *cmd_idle, *cmd_sick, *cmd_dead;

#if defined(unix) || defined(__APPLE__)
	static char *opt_stderr_cmd = NULL;
	static int forkpid;
#endif // defined(unix)

#ifdef HAVE_CHROOT
char *chroot_dir;
#endif

#ifdef HAVE_PWD_H
char *opt_setuid;
#endif

struct sigaction termhandler, inthandler;

struct thread_q *getq;

static int total_work;
static bool staged_full;
struct work *staged_work = NULL;

struct schedtime {
	bool enable;
	struct tm tm;
};

struct schedtime schedstart;
struct schedtime schedstop;
bool sched_paused;

static bool time_before(struct tm *tm1, struct tm *tm2)
{
	if (tm1->tm_hour < tm2->tm_hour)
		return true;
	if (tm1->tm_hour == tm2->tm_hour && tm1->tm_min < tm2->tm_min)
		return true;
	return false;
}

static bool should_run(void)
{
	struct tm tm;
	time_t tt;
	bool within_range;

	if (!schedstart.enable && !schedstop.enable)
		return true;

	tt = time(NULL);
	localtime_r(&tt, &tm);

	// NOTE: This is delicately balanced so that should_run is always false if schedstart==schedstop
	if (time_before(&schedstop.tm, &schedstart.tm))
		within_range = (time_before(&tm, &schedstop.tm) || !time_before(&tm, &schedstart.tm));
	else
		within_range = (time_before(&tm, &schedstop.tm) && !time_before(&tm, &schedstart.tm));

	if (within_range && !schedstop.enable)
		/* This is a once off event with no stop time set */
		schedstart.enable = false;

	return within_range;
}

void get_datestamp(char *f, size_t fsiz, time_t tt)
{
	struct tm _tm;
	struct tm *tm = &_tm;
	
	if (tt == INVALID_TIMESTAMP)
		tt = time(NULL);

	localtime_r(&tt, tm);
	snprintf(f, fsiz, "[%d-%02d-%02d %02d:%02d:%02d]",
		tm->tm_year + 1900,
		tm->tm_mon + 1,
		tm->tm_mday,
		tm->tm_hour,
		tm->tm_min,
		tm->tm_sec);
}

static
void get_timestamp(char *f, size_t fsiz, time_t tt)
{
	struct tm _tm;
	struct tm *tm = &_tm;

	localtime_r(&tt, tm);
	snprintf(f, fsiz, "[%02d:%02d:%02d]",
		tm->tm_hour,
		tm->tm_min,
		tm->tm_sec);
}

static void applog_and_exit(const char *fmt, ...) FORMAT_SYNTAX_CHECK(printf, 1, 2);

static char exit_buf[512];

static void applog_and_exit(const char *fmt, ...)
{
	va_list ap;

	va_start(ap, fmt);
	vsnprintf(exit_buf, sizeof(exit_buf), fmt, ap);
	va_end(ap);
	_applog(LOG_ERR, exit_buf);
	exit(1);
}

char *devpath_to_devid(const char *devpath)
{
#ifndef WIN32
	struct stat my_stat;
	if (stat(devpath, &my_stat))
		return NULL;
	char *devs = malloc(6 + (sizeof(dev_t) * 2) + 1);
	memcpy(devs, "dev_t:", 6);
	bin2hex(&devs[6], &my_stat.st_rdev, sizeof(dev_t));
#else
	if (!strncmp(devpath, "\\\\.\\", 4))
		devpath += 4;
	if (strncasecmp(devpath, "COM", 3) || !devpath[3])
		return NULL;
	devpath += 3;
	char *p;
	strtol(devpath, &p, 10);
	if (p[0])
		return NULL;
	const int sz = (p - devpath);
	char *devs = malloc(4 + sz + 1);
	sprintf(devs, "com:%s", devpath);
#endif
	return devs;
}

static
bool devpaths_match(const char * const ap, const char * const bp)
{
	char * const a = devpath_to_devid(ap);
	if (!a)
		return false;
	char * const b = devpath_to_devid(bp);
	bool rv = false;
	if (b)
	{
		rv = !strcmp(a, b);
		free(b);
	}
	free(a);
	return rv;
}

static
int proc_letter_to_number(const char *s, const char ** const rem)
{
	int n = 0, c;
	for ( ; s[0]; ++s)
	{
		if (unlikely(n > INT_MAX / 26))
			break;
		c = tolower(s[0]) - 'a';
		if (unlikely(c < 0 || c > 25))
			break;
		if (unlikely(INT_MAX - c < n))
			break;
		n = (n * 26) + c;
	}
	*rem = s;
	return n;
}

static
bool cgpu_match(const char * const pattern, const struct cgpu_info * const cgpu)
{
	// all - matches anything
	// d0 - matches all processors of device 0
	// d0-3 - matches all processors of device 0, 1, 2, or 3
	// d0a - matches first processor of device 0
	// 0 - matches processor 0
	// 0-4 - matches processors 0, 1, 2, 3, or 4
	// ___ - matches all processors on all devices using driver/name ___
	// ___0 - matches all processors of 0th device using driver/name ___
	// ___0a - matches first processor of 0th device using driver/name ___
	// @* - matches device with serial or path *
	// @*@a - matches first processor of device with serial or path *
	// ___@* - matches device with serial or path * using driver/name ___
	if (!strcasecmp(pattern, "all"))
		return true;
	
	const struct device_drv * const drv = cgpu->drv;
	const char *p = pattern, *p2;
	size_t L;
	int n, i, c = -1;
	int n2;
	int proc_first = -1, proc_last = -1;
	struct cgpu_info *device;
	
	if (!(strncasecmp(drv->dname, p, (L = strlen(drv->dname)))
	   && strncasecmp(drv-> name, p, (L = strlen(drv-> name)))))
		// dname or name
		p = &pattern[L];
	else
	if (p[0] == 'd' && (isdigit(p[1]) || p[1] == '-'))
		// d#
		++p;
	else
	if (isdigit(p[0]) || p[0] == '@' || p[0] == '-')
		// # or @
		{}
	else
		return false;
	
	L = p - pattern;
	while (isspace(p[0]))
		++p;
	if (p[0] == '@')
	{
		// Serial/path
		const char * const ser = &p[1];
		for (p = ser; p[0] != '@' && p[0] != '\0'; ++p)
		{}
		p2 = (p[0] == '@') ? &p[1] : p;
		const size_t serlen = (p - ser);
		p = "";
		n = n2 = 0;
		const char * const devpath = cgpu->device_path ?: "";
		const char * const devser = cgpu->dev_serial ?: "";
		if ((!strncmp(devpath, ser, serlen)) && devpath[serlen] == '\0')
		{}  // Match
		else
		if ((!strncmp(devser, ser, serlen)) && devser[serlen] == '\0')
		{}  // Match
		else
		{
			char devpath2[serlen + 1];
			memcpy(devpath2, ser, serlen);
			devpath2[serlen] = '\0';
			if (!devpaths_match(devpath, ser))
				return false;
		}
	}
	else
	{
		if (isdigit(p[0]))
			n = strtol(p, (void*)&p2, 0);
		else
		{
			n = 0;
			p2 = p;
		}
		if (p2[0] == '-')
		{
			++p2;
			if (p2[0] && isdigit(p2[0]))
				n2 = strtol(p2, (void*)&p2, 0);
			else
				n2 = INT_MAX;
		}
		else
			n2 = n;
		if (p == pattern)
		{
			if (!p[0])
				return true;
			if (p2 && p2[0])
				goto invsyntax;
			for (i = n; i <= n2; ++i)
			{
				if (i >= total_devices)
					break;
				if (cgpu == devices[i])
					return true;
			}
			return false;
		}
	}
	
	if (p2[0])
	{
		proc_first = proc_letter_to_number(&p2[0], &p2);
		if (p2[0] == '-')
		{
			++p2;
			if (p2[0])
				proc_last = proc_letter_to_number(p2, &p2);
			else
				proc_last = INT_MAX;
		}
		else
			proc_last = proc_first;
		if (p2[0])
			goto invsyntax;
	}
	
	if (L > 1 || tolower(pattern[0]) != 'd' || !p[0])
	{
		if ((L == 3 && !strncasecmp(pattern, drv->name, 3)) ||
			(!L) ||
			(L == strlen(drv->dname) && !strncasecmp(pattern, drv->dname, L)))
			{}  // Matched name or dname
		else
			return false;
		if (p[0] && (cgpu->device_id < n || cgpu->device_id > n2))
			return false;
		if (proc_first != -1 && (cgpu->proc_id < proc_first || cgpu->proc_id > proc_last))
			return false;
		return true;
	}
	
	// d#
	
	c = -1;
	for (i = 0; ; ++i)
	{
		if (i == total_devices)
			return false;
		if (devices[i]->device != devices[i])
			continue;
		++c;
		if (c < n)
			continue;
		if (c > n2)
			break;
		
		for (device = devices[i]; device; device = device->next_proc)
		{
			if (proc_first != -1 && (device->proc_id < proc_first || device->proc_id > proc_last))
				continue;
			if (device == cgpu)
				return true;
		}
	}
	return false;

invsyntax:
	applog(LOG_WARNING, "%s: Invalid syntax: %s", __func__, pattern);
	return false;
}

#define TEST_CGPU_MATCH(pattern)  \
	if (!cgpu_match(pattern, &cgpu))  \
		applog(LOG_ERR, "%s: Pattern \"%s\" should have matched!", __func__, pattern);  \
// END TEST_CGPU_MATCH
#define TEST_CGPU_NOMATCH(pattern)  \
	if (cgpu_match(pattern, &cgpu))  \
		applog(LOG_ERR, "%s: Pattern \"%s\" should NOT have matched!", __func__, pattern);  \
// END TEST_CGPU_MATCH
static __maybe_unused
void test_cgpu_match()
{
	struct device_drv drv = {
		.dname = "test",
		.name = "TST",
	};
	struct cgpu_info cgpu = {
		.drv = &drv,
		.device = &cgpu,
		.device_id = 1,
		.proc_id = 1,
		.proc_repr = "TST 1b",
	}, cgpu0a = {
		.drv = &drv,
		.device = &cgpu0a,
		.device_id = 0,
		.proc_id = 0,
		.proc_repr = "TST 0a",
	}, cgpu1a = {
		.drv = &drv,
		.device = &cgpu0a,
		.device_id = 1,
		.proc_id = 0,
		.proc_repr = "TST 1a",
	};
	struct cgpu_info *devices_list[3] = {&cgpu0a, &cgpu1a, &cgpu,};
	devices = devices_list;
	total_devices = 3;
	TEST_CGPU_MATCH("all")
	TEST_CGPU_MATCH("d1")
	TEST_CGPU_NOMATCH("d2")
	TEST_CGPU_MATCH("d0-5")
	TEST_CGPU_NOMATCH("d0-0")
	TEST_CGPU_NOMATCH("d2-5")
	TEST_CGPU_MATCH("d-1")
	TEST_CGPU_MATCH("d1-")
	TEST_CGPU_NOMATCH("d-0")
	TEST_CGPU_NOMATCH("d2-")
	TEST_CGPU_MATCH("2")
	TEST_CGPU_NOMATCH("3")
	TEST_CGPU_MATCH("1-2")
	TEST_CGPU_MATCH("2-3")
	TEST_CGPU_NOMATCH("1-1")
	TEST_CGPU_NOMATCH("3-4")
	TEST_CGPU_MATCH("TST")
	TEST_CGPU_MATCH("test")
	TEST_CGPU_MATCH("tst")
	TEST_CGPU_MATCH("TEST")
	TEST_CGPU_NOMATCH("TSF")
	TEST_CGPU_NOMATCH("TS")
	TEST_CGPU_NOMATCH("TSTF")
	TEST_CGPU_MATCH("TST1")
	TEST_CGPU_MATCH("test1")
	TEST_CGPU_MATCH("TST0-1")
	TEST_CGPU_MATCH("TST 1")
	TEST_CGPU_MATCH("TST 1-2")
	TEST_CGPU_MATCH("TEST 1-2")
	TEST_CGPU_NOMATCH("TST2")
	TEST_CGPU_NOMATCH("TST2-3")
	TEST_CGPU_NOMATCH("TST0-0")
	TEST_CGPU_MATCH("TST1b")
	TEST_CGPU_MATCH("tst1b")
	TEST_CGPU_NOMATCH("TST1c")
	TEST_CGPU_NOMATCH("TST1bb")
	TEST_CGPU_MATCH("TST0-1b")
	TEST_CGPU_NOMATCH("TST0-1c")
	TEST_CGPU_MATCH("TST1a-d")
	TEST_CGPU_NOMATCH("TST1a-a")
	TEST_CGPU_NOMATCH("TST1-a")
	TEST_CGPU_NOMATCH("TST1c-z")
	TEST_CGPU_NOMATCH("TST1c-")
	TEST_CGPU_MATCH("@")
	TEST_CGPU_NOMATCH("@abc")
	TEST_CGPU_MATCH("@@b")
	TEST_CGPU_NOMATCH("@@c")
	TEST_CGPU_MATCH("TST@")
	TEST_CGPU_NOMATCH("TST@abc")
	TEST_CGPU_MATCH("TST@@b")
	TEST_CGPU_NOMATCH("TST@@c")
	TEST_CGPU_MATCH("TST@@b-f")
	TEST_CGPU_NOMATCH("TST@@c-f")
	TEST_CGPU_NOMATCH("TST@@-a")
	cgpu.device_path = "/dev/test";
	cgpu.dev_serial = "testy";
	TEST_CGPU_MATCH("TST@/dev/test")
	TEST_CGPU_MATCH("TST@testy")
	TEST_CGPU_NOMATCH("TST@")
	TEST_CGPU_NOMATCH("TST@/dev/test5@b")
	TEST_CGPU_NOMATCH("TST@testy3@b")
	TEST_CGPU_MATCH("TST@/dev/test@b")
	TEST_CGPU_MATCH("TST@testy@b")
	TEST_CGPU_NOMATCH("TST@/dev/test@c")
	TEST_CGPU_NOMATCH("TST@testy@c")
	cgpu.device_path = "usb:000:999";
	TEST_CGPU_MATCH("TST@usb:000:999")
	drv.dname = "test7";
	TEST_CGPU_MATCH("test7")
	TEST_CGPU_MATCH("TEST7")
	TEST_CGPU_NOMATCH("test&")
	TEST_CGPU_MATCH("test7 1-2")
	TEST_CGPU_MATCH("test7@testy@b")
}

static
int cgpu_search(const char * const pattern, const int first)
{
	int i;
	struct cgpu_info *cgpu;
	
#define CHECK_CGPU_SEARCH  do{      \
	cgpu = get_devices(i);          \
	if (cgpu_match(pattern, cgpu))  \
		return i;                   \
}while(0)
	for (i = first; i < total_devices; ++i)
		CHECK_CGPU_SEARCH;
	for (i = 0; i < first; ++i)
		CHECK_CGPU_SEARCH;
#undef CHECK_CGPU_SEARCH
	return -1;
}

static pthread_mutex_t sharelog_lock;
static FILE *sharelog_file = NULL;

struct thr_info *get_thread(int thr_id)
{
	struct thr_info *thr;

	rd_lock(&mining_thr_lock);
	thr = mining_thr[thr_id];
	rd_unlock(&mining_thr_lock);

	return thr;
}

static struct cgpu_info *get_thr_cgpu(int thr_id)
{
	struct thr_info *thr = get_thread(thr_id);

	return thr->cgpu;
}

struct cgpu_info *get_devices(int id)
{
	struct cgpu_info *cgpu;

	rd_lock(&devices_lock);
	cgpu = devices[id];
	rd_unlock(&devices_lock);

	return cgpu;
}

static pthread_mutex_t noncelog_lock = PTHREAD_MUTEX_INITIALIZER;
static FILE *noncelog_file = NULL;

static
void noncelog(const struct work * const work)
{
	const int thr_id = work->thr_id;
	const struct cgpu_info *proc = get_thr_cgpu(thr_id);
	char buf[0x200], hash[65], data[161], midstate[65];
	int rv;
	size_t ret;
	
	bin2hex(hash, work->hash, 32);
	bin2hex(data, work->data, 80);
	bin2hex(midstate, work->midstate, 32);
	
	// timestamp,proc,hash,data,midstate
	rv = snprintf(buf, sizeof(buf), "%lu,%s,%s,%s,%s\n",
	              (unsigned long)time(NULL), proc->proc_repr_ns,
	              hash, data, midstate);
	
	if (unlikely(rv < 1))
	{
		applog(LOG_ERR, "noncelog printf error");
		return;
	}
	
	mutex_lock(&noncelog_lock);
	ret = fwrite(buf, rv, 1, noncelog_file);
	fflush(noncelog_file);
	mutex_unlock(&noncelog_lock);
	
	if (ret != 1)
		applog(LOG_ERR, "noncelog fwrite error");
}

static void sharelog(const char*disposition, const struct work*work)
{
	char target[(sizeof(work->target) * 2) + 1];
	char hash[(sizeof(work->hash) * 2) + 1];
	char data[(sizeof(work->data) * 2) + 1];
	struct cgpu_info *cgpu;
	unsigned long int t;
	struct pool *pool;
	int thr_id, rv;
	char s[1024];
	size_t ret;

	if (!sharelog_file)
		return;

	thr_id = work->thr_id;
	cgpu = get_thr_cgpu(thr_id);
	pool = work->pool;
	t = work->ts_getwork + timer_elapsed(&work->tv_getwork, &work->tv_work_found);
	bin2hex(target, work->target, sizeof(work->target));
	bin2hex(hash, work->hash, sizeof(work->hash));
	bin2hex(data, work->data, sizeof(work->data));

	// timestamp,disposition,target,pool,dev,thr,sharehash,sharedata
	rv = snprintf(s, sizeof(s), "%lu,%s,%s,%s,%s,%u,%s,%s\n", t, disposition, target, pool->rpc_url, cgpu->proc_repr_ns, thr_id, hash, data);
	if (rv >= (int)(sizeof(s)))
		s[sizeof(s) - 1] = '\0';
	else if (rv < 0) {
		applog(LOG_ERR, "sharelog printf error");
		return;
	}

	mutex_lock(&sharelog_lock);
	ret = fwrite(s, rv, 1, sharelog_file);
	fflush(sharelog_file);
	mutex_unlock(&sharelog_lock);

	if (ret != 1)
		applog(LOG_ERR, "sharelog fwrite error");
}

static char *getwork_req = "{\"method\": \"getwork\", \"params\": [], \"id\":0}\n";

/* Adjust all the pools' quota to the greatest common denominator after a pool
 * has been added or the quotas changed. */
void adjust_quota_gcd(void)
{
	unsigned long gcd, lowest_quota = ~0UL, quota;
	struct pool *pool;
	int i;

	for (i = 0; i < total_pools; i++) {
		pool = pools[i];
		quota = pool->quota;
		if (!quota)
			continue;
		if (quota < lowest_quota)
			lowest_quota = quota;
	}

	if (likely(lowest_quota < ~0UL)) {
		gcd = lowest_quota;
		for (i = 0; i < total_pools; i++) {
			pool = pools[i];
			quota = pool->quota;
			if (!quota)
				continue;
			while (quota % gcd)
				gcd--;
		}
	} else
		gcd = 1;

	for (i = 0; i < total_pools; i++) {
		pool = pools[i];
		pool->quota_used *= global_quota_gcd;
		pool->quota_used /= gcd;
		pool->quota_gcd = pool->quota / gcd;
	}

	global_quota_gcd = gcd;
	applog(LOG_DEBUG, "Global quota greatest common denominator set to %lu", gcd);
}

/* Return value is ignored if not called from add_pool_details */
struct pool *add_pool(void)
{
	struct pool *pool;

	pool = calloc(sizeof(struct pool), 1);
	if (!pool)
		quit(1, "Failed to malloc pool in add_pool");
	pool->pool_no = pool->prio = total_pools;
	mutex_init(&pool->last_work_lock);
	mutex_init(&pool->pool_lock);
	if (unlikely(pthread_cond_init(&pool->cr_cond, NULL)))
		quit(1, "Failed to pthread_cond_init in add_pool");
	cglock_init(&pool->data_lock);
	mutex_init(&pool->stratum_lock);
	timer_unset(&pool->swork.tv_transparency);
	pool->swork.pool = pool;

	/* Make sure the pool doesn't think we've been idle since time 0 */
	pool->tv_idle.tv_sec = ~0UL;
	
	cgtime(&pool->cgminer_stats.start_tv);

	pool->rpc_proxy = NULL;
	pool->quota = 1;

	pool->sock = INVSOCK;
	pool->lp_socket = CURL_SOCKET_BAD;

	if (opt_benchmark)
	{
		// Don't add to pools array, but immediately remove it
		remove_pool(pool);
		return pool;
	}
	
	pools = realloc(pools, sizeof(struct pool *) * (total_pools + 2));
	pools[total_pools++] = pool;
	
	adjust_quota_gcd();

	return pool;
}

/* Pool variant of test and set */
static bool pool_tset(struct pool *pool, bool *var)
{
	bool ret;

	mutex_lock(&pool->pool_lock);
	ret = *var;
	*var = true;
	mutex_unlock(&pool->pool_lock);

	return ret;
}

bool pool_tclear(struct pool *pool, bool *var)
{
	bool ret;

	mutex_lock(&pool->pool_lock);
	ret = *var;
	*var = false;
	mutex_unlock(&pool->pool_lock);

	return ret;
}

struct pool *current_pool(void)
{
	struct pool *pool;

	cg_rlock(&control_lock);
	pool = currentpool;
	cg_runlock(&control_lock);

	return pool;
}

// Copied from ccan/opt/helpers.c
static char *arg_bad(const char *fmt, const char *arg)
{
	char *str = malloc(strlen(fmt) + strlen(arg));
	sprintf(str, fmt, arg);
	return str;
}

static
char *opt_set_floatval(const char *arg, float *f)
{
	char *endp;

	errno = 0;
	*f = strtof(arg, &endp);
	if (*endp || !arg[0])
		return arg_bad("'%s' is not a number", arg);
	if (errno)
		return arg_bad("'%s' is out of range", arg);
	return NULL;
}

static
void opt_show_floatval(char buf[OPT_SHOW_LEN], const float *f)
{
	snprintf(buf, OPT_SHOW_LEN, "%.1f", *f);
}

static
char *set_bool_ignore_arg(const char * const arg, bool * const b)
{
	return opt_set_bool(b);
}

char *set_int_range(const char *arg, int *i, int min, int max)
{
	char *err = opt_set_intval(arg, i);

	if (err)
		return err;

	if (*i < min || *i > max)
		return "Value out of range";

	return NULL;
}

static char *set_int_0_to_9999(const char *arg, int *i)
{
	return set_int_range(arg, i, 0, 9999);
}

static char *set_int_1_to_65535(const char *arg, int *i)
{
	return set_int_range(arg, i, 1, 65535);
}

static char *set_int_0_to_10(const char *arg, int *i)
{
	return set_int_range(arg, i, 0, 10);
}

static char *set_int_1_to_10(const char *arg, int *i)
{
	return set_int_range(arg, i, 1, 10);
}

char *set_strdup(const char *arg, char **p)
{
	*p = strdup((char *)arg);
	return NULL;
}

#if BLKMAKER_VERSION > 1
static char *set_b58addr(const char *arg, struct _cbscript_t *p)
{
	size_t scriptsz = blkmk_address_to_script(NULL, 0, arg);
	if (!scriptsz)
		return "Invalid address";
	char *script = malloc(scriptsz);
	if (blkmk_address_to_script(script, scriptsz, arg) != scriptsz) {
		free(script);
		return "Failed to convert address to script";
	}
	p->data = script;
	p->sz = scriptsz;
	return NULL;
}
#endif

static
char *set_quit_summary(const char * const arg)
{
	if (!(strcasecmp(arg, "none") && strcasecmp(arg, "no")))
		opt_quit_summary = BQS_NONE;
	else
	if (!(strcasecmp(arg, "devs") && strcasecmp(arg, "devices")))
		opt_quit_summary = BQS_DEVS;
	else
	if (!(strcasecmp(arg, "procs") && strcasecmp(arg, "processors") && strcasecmp(arg, "chips") && strcasecmp(arg, "cores")))
		opt_quit_summary = BQS_PROCS;
	else
	if (!(strcasecmp(arg, "detailed") && strcasecmp(arg, "detail") && strcasecmp(arg, "all")))
		opt_quit_summary = BQS_DETAILED;
	else
		return "Quit summary must be one of none/devs/procs/detailed";
	return NULL;
}

static void pdiff_target_leadzero(void *, double);

char *set_request_diff(const char *arg, float *p)
{
	unsigned char target[32];
	char *e = opt_set_floatval(arg, p);
	if (e)
		return e;
	
	request_bdiff = (double)*p * 0.9999847412109375;
	pdiff_target_leadzero(target, *p);
	request_target_str = malloc(65);
	bin2hex(request_target_str, target, 32);
	
	return NULL;
}

#ifdef NEED_BFG_LOWL_VCOM
extern struct lowlevel_device_info *_vcom_devinfo_findorcreate(struct lowlevel_device_info **, const char *);

#ifdef WIN32
void _vcom_devinfo_scan_querydosdevice(struct lowlevel_device_info ** const devinfo_list)
{
	char dev[PATH_MAX];
	char *devp = dev;
	size_t bufLen = 0x100;
tryagain: ;
	char buf[bufLen];
	if (!QueryDosDevice(NULL, buf, bufLen)) {
		if (GetLastError() == ERROR_INSUFFICIENT_BUFFER) {
			bufLen *= 2;
			applog(LOG_DEBUG, "QueryDosDevice returned insufficent buffer error; enlarging to %lx", (unsigned long)bufLen);
			goto tryagain;
		}
		applogr(, LOG_WARNING, "Error occurred trying to enumerate COM ports with QueryDosDevice");
	}
	size_t tLen;
	memcpy(devp, "\\\\.\\", 4);
	devp = &devp[4];
	for (char *t = buf; *t; t += tLen) {
		tLen = strlen(t) + 1;
		if (strncmp("COM", t, 3))
			continue;
		memcpy(devp, t, tLen);
		// NOTE: We depend on _vcom_devinfo_findorcreate to further check that there's a number (and only a number) on the end
		_vcom_devinfo_findorcreate(devinfo_list, dev);
	}
}
#else
void _vcom_devinfo_scan_lsdev(struct lowlevel_device_info ** const devinfo_list)
{
	char dev[PATH_MAX];
	char *devp = dev;
	DIR *D;
	struct dirent *de;
	const char devdir[] = "/dev";
	const size_t devdirlen = sizeof(devdir) - 1;
	char *devpath = devp;
	char *devfile = devpath + devdirlen + 1;
	
	D = opendir(devdir);
	if (!D)
		applogr(, LOG_DEBUG, "No /dev directory to look for VCOM devices in");
	memcpy(devpath, devdir, devdirlen);
	devpath[devdirlen] = '/';
	while ( (de = readdir(D)) ) {
		if (!strncmp(de->d_name, "cu.", 3)
			//don't probe Bluetooth devices - causes bus errors and segfaults
			&& strncmp(de->d_name, "cu.Bluetooth", 12))
			goto trydev;
		if (strncmp(de->d_name, "tty", 3))
			continue;
		if (strncmp(&de->d_name[3], "USB", 3) && strncmp(&de->d_name[3], "ACM", 3))
			continue;
		
trydev:
		strcpy(devfile, de->d_name);
		_vcom_devinfo_findorcreate(devinfo_list, dev);
	}
	closedir(D);
}
#endif
#endif

static char *add_serial(const char *arg)
{
	string_elist_add(arg, &scan_devices);
	return NULL;
}

static
char *opt_string_elist_add(const char *arg, struct string_elist **elist)
{
	string_elist_add(arg, elist);
	return NULL;
}

bool get_intrange(const char *arg, int *val1, int *val2)
{
	// NOTE: This could be done with sscanf, but its %n is broken in strange ways on Windows
	char *p, *p2;
	
	*val1 = strtol(arg, &p, 0);
	if (arg == p)
		// Zero-length ending number, invalid
		return false;
	while (true)
	{
		if (!p[0])
		{
			*val2 = *val1;
			return true;
		}
		if (p[0] == '-')
			break;
		if (!isspace(p[0]))
			// Garbage, invalid
			return false;
		++p;
	}
	p2 = &p[1];
	*val2 = strtol(p2, &p, 0);
	if (p2 == p)
		// Zero-length ending number, invalid
		return false;
	while (true)
	{
		if (!p[0])
			return true;
		if (!isspace(p[0]))
			// Garbage, invalid
			return false;
		++p;
	}
}

static
void _test_intrange(const char *s, const int v[2])
{
	int a[2];
	if (!get_intrange(s, &a[0], &a[1]))
		applog(LOG_ERR, "Test \"%s\" failed: returned false", s);
	for (int i = 0; i < 2; ++i)
		if (unlikely(a[i] != v[i]))
			applog(LOG_ERR, "Test \"%s\" failed: value %d should be %d but got %d", s, i, v[i], a[i]);
}
#define _test_intrange(s, ...)  _test_intrange(s, (int[]){ __VA_ARGS__ })

static
void _test_intrange_fail(const char *s)
{
	int a[2];
	if (get_intrange(s, &a[0], &a[1]))
		applog(LOG_ERR, "Test !\"%s\" failed: returned true with %d and %d", s, a[0], a[1]);
}

static
void test_intrange()
{
	_test_intrange("-1--2", -1, -2);
	_test_intrange("-1-2", -1, 2);
	_test_intrange("1--2", 1, -2);
	_test_intrange("1-2", 1, 2);
	_test_intrange("111-222", 111, 222);
	_test_intrange(" 11 - 22 ", 11, 22);
	_test_intrange("+11-+22", 11, 22);
	_test_intrange("-1", -1, -1);
	_test_intrange_fail("all");
	_test_intrange_fail("1-");
	_test_intrange_fail("");
	_test_intrange_fail("1-54x");
}

static char *set_devices(char *arg)
{
	if (*arg) {
		if (*arg == '?') {
			opt_display_devs = true;
			return NULL;
		}
	} else
		return "Invalid device parameters";

	string_elist_add(arg, &opt_devices_enabled_list);

	return NULL;
}

static char *set_balance(enum pool_strategy *strategy)
{
	*strategy = POOL_BALANCE;
	return NULL;
}

static char *set_loadbalance(enum pool_strategy *strategy)
{
	*strategy = POOL_LOADBALANCE;
	return NULL;
}

static char *set_rotate(const char *arg, int *i)
{
	pool_strategy = POOL_ROTATE;
	return set_int_range(arg, i, 0, 9999);
}

static char *set_rr(enum pool_strategy *strategy)
{
	*strategy = POOL_ROUNDROBIN;
	return NULL;
}

/* Detect that url is for a stratum protocol either via the presence of
 * stratum+tcp or by detecting a stratum server response */
bool detect_stratum(struct pool *pool, char *url)
{
	if (!extract_sockaddr(url, &pool->sockaddr_url, &pool->stratum_port))
		return false;

	if (!strncasecmp(url, "stratum+tcp://", 14)) {
		pool->rpc_url = strdup(url);
		pool->has_stratum = true;
		pool->stratum_url = pool->sockaddr_url;
		return true;
	}

	return false;
}

static struct pool *add_url(void)
{
	total_urls++;
	if (total_urls > total_pools)
		add_pool();
	return pools[total_urls - 1];
}

static void setup_url(struct pool *pool, char *arg)
{
	if (detect_stratum(pool, arg))
		return;

	opt_set_charp(arg, &pool->rpc_url);
	if (strncmp(arg, "http://", 7) &&
	    strncmp(arg, "https://", 8)) {
		const size_t L = strlen(arg);
		char *httpinput;

		httpinput = malloc(8 + L);
		if (!httpinput)
			quit(1, "Failed to malloc httpinput");
		sprintf(httpinput, "http://%s", arg);
		pool->rpc_url = httpinput;
	}
}

static char *set_url(char *arg)
{
	struct pool *pool = add_url();

	setup_url(pool, arg);
	return NULL;
}

static char *set_quota(char *arg)
{
	char *semicolon = strchr(arg, ';'), *url;
	int len, qlen, quota;
	struct pool *pool;

	if (!semicolon)
		return "No semicolon separated quota;URL pair found";
	len = strlen(arg);
	*semicolon = '\0';
	qlen = strlen(arg);
	if (!qlen)
		return "No parameter for quota found";
	len -= qlen + 1;
	if (len < 1)
		return "No parameter for URL found";
	quota = atoi(arg);
	if (quota < 0)
		return "Invalid negative parameter for quota set";
	url = arg + qlen + 1;
	pool = add_url();
	setup_url(pool, url);
	pool->quota = quota;
	applog(LOG_INFO, "Setting pool %d to quota %d", pool->pool_no, pool->quota);
	adjust_quota_gcd();

	return NULL;
}

static char *set_user(const char *arg)
{
	struct pool *pool;

	total_users++;
	if (total_users > total_pools)
		add_pool();

	pool = pools[total_users - 1];
	opt_set_charp(arg, &pool->rpc_user);

	return NULL;
}

static char *set_pass(const char *arg)
{
	struct pool *pool;

	total_passes++;
	if (total_passes > total_pools)
		add_pool();

	pool = pools[total_passes - 1];
	opt_set_charp(arg, &pool->rpc_pass);

	return NULL;
}

static char *set_userpass(const char *arg)
{
	struct pool *pool;
	char *updup;

	if (total_users != total_passes)
		return "User + pass options must be balanced before userpass";
	++total_users;
	++total_passes;
	if (total_users > total_pools)
		add_pool();

	pool = pools[total_users - 1];
	updup = strdup(arg);
	opt_set_charp(arg, &pool->rpc_userpass);
	pool->rpc_user = strtok(updup, ":");
	if (!pool->rpc_user)
		return "Failed to find : delimited user info";
	pool->rpc_pass = strtok(NULL, ":");
	if (!pool->rpc_pass)
		pool->rpc_pass = "";

	return NULL;
}

static char *set_pool_priority(const char *arg)
{
	struct pool *pool;

	if (!total_pools)
		return "Usage of --pool-priority before pools are defined does not make sense";

	pool = pools[total_pools - 1];
	opt_set_intval(arg, &pool->prio);

	return NULL;
}

static char *set_pool_proxy(const char *arg)
{
	struct pool *pool;

	if (!total_pools)
		return "Usage of --pool-proxy before pools are defined does not make sense";

	if (!our_curl_supports_proxy_uris())
		return "Your installed cURL library does not support proxy URIs. At least version 7.21.7 is required.";

	pool = pools[total_pools - 1];
	opt_set_charp(arg, &pool->rpc_proxy);

	return NULL;
}

static char *set_pool_force_rollntime(const char *arg)
{
	struct pool *pool;
	
	if (!total_pools)
		return "Usage of --force-rollntime before pools are defined does not make sense";
	
	pool = pools[total_pools - 1];
	opt_set_intval(arg, &pool->force_rollntime);
	
	return NULL;
}

static char *enable_debug(bool *flag)
{
	*flag = true;
	opt_debug_console = true;
	/* Turn on verbose output, too. */
	opt_log_output = true;
	return NULL;
}

static char *set_schedtime(const char *arg, struct schedtime *st)
{
	if (sscanf(arg, "%d:%d", &st->tm.tm_hour, &st->tm.tm_min) != 2)
	{
		if (strcasecmp(arg, "now"))
		return "Invalid time set, should be HH:MM";
	} else
		schedstop.tm.tm_sec = 0;
	if (st->tm.tm_hour > 23 || st->tm.tm_min > 59 || st->tm.tm_hour < 0 || st->tm.tm_min < 0)
		return "Invalid time set.";
	st->enable = true;
	return NULL;
}

static
char *set_log_file(char *arg)
{
	char *r = "";
	long int i = strtol(arg, &r, 10);
	int fd, stderr_fd = fileno(stderr);

	if ((!*r) && i >= 0 && i <= INT_MAX)
		fd = i;
	else
	if (!strcmp(arg, "-"))
	{
		fd = fileno(stdout);
		if (unlikely(fd == -1))
			return "Standard output missing for log-file";
	}
	else
	{
		fd = open(arg, O_WRONLY | O_APPEND | O_CREAT, S_IRUSR | S_IWUSR);
		if (unlikely(fd == -1))
			return "Failed to open log-file";
	}
	
	close(stderr_fd);
	if (unlikely(-1 == dup2(fd, stderr_fd)))
		return "Failed to dup2 for log-file";
	close(fd);
	
	return NULL;
}

static
char *_bfgopt_set_file(const char *arg, FILE **F, const char *mode, const char *purpose)
{
	char *r = "";
	long int i = strtol(arg, &r, 10);
	static char *err = NULL;
	const size_t errbufsz = 0x100;

	free(err);
	err = NULL;
	
	if ((!*r) && i >= 0 && i <= INT_MAX) {
		*F = fdopen((int)i, mode);
		if (!*F)
		{
			err = malloc(errbufsz);
			snprintf(err, errbufsz, "Failed to open fd %d for %s",
			         (int)i, purpose);
			return err;
		}
	} else if (!strcmp(arg, "-")) {
		*F = (mode[0] == 'a') ? stdout : stdin;
		if (!*F)
		{
			err = malloc(errbufsz);
			snprintf(err, errbufsz, "Standard %sput missing for %s",
			         (mode[0] == 'a') ? "out" : "in", purpose);
			return err;
		}
	} else {
		*F = fopen(arg, mode);
		if (!*F)
		{
			err = malloc(errbufsz);
			snprintf(err, errbufsz, "Failed to open %s for %s",
			         arg, purpose);
			return err;
		}
	}

	return NULL;
}

static char *set_noncelog(char *arg)
{
	return _bfgopt_set_file(arg, &noncelog_file, "a", "nonce log");
}

static char *set_sharelog(char *arg)
{
	return _bfgopt_set_file(arg, &sharelog_file, "a", "share log");
}

static
void _add_set_device_option(const char * const func, const char * const buf)
{
	applog(LOG_DEBUG, "%s: Using --set-device %s", func, buf);
	string_elist_add(buf, &opt_set_device_list);
}

#define add_set_device_option(...)  do{  \
	char _tmp1718[0x100];  \
	snprintf(_tmp1718, sizeof(_tmp1718), __VA_ARGS__);  \
	_add_set_device_option(__func__, _tmp1718);  \
}while(0)

char *set_temp_cutoff(char *arg)
{
	if (strchr(arg, ','))
		return "temp-cutoff no longer supports comma-delimited syntax, use --set-device for better control";
	applog(LOG_WARNING, "temp-cutoff is deprecated! Use --set-device for better control");
	
	add_set_device_option("all:temp-cutoff=%s", arg);
	
	return NULL;
}

char *set_temp_target(char *arg)
{
	if (strchr(arg, ','))
		return "temp-target no longer supports comma-delimited syntax, use --set-device for better control";
	applog(LOG_WARNING, "temp-target is deprecated! Use --set-device for better control");
	
	add_set_device_option("all:temp-target=%s", arg);
	
	return NULL;
}

#ifdef HAVE_OPENCL
static
char *set_no_opencl_binaries(__maybe_unused void * const dummy)
{
	applog(LOG_WARNING, "The --no-opencl-binaries option is deprecated! Use --set-device OCL:binary=no");
	add_set_device_option("OCL:binary=no");
	return NULL;
}
#endif

static
char *disable_pool_redirect(__maybe_unused void * const dummy)
{
	opt_disable_client_reconnect = true;
	want_stratum = false;
	return NULL;
}

static char *set_api_allow(const char *arg)
{
	opt_set_charp(arg, &opt_api_allow);

	return NULL;
}

static char *set_api_groups(const char *arg)
{
	opt_set_charp(arg, &opt_api_groups);

	return NULL;
}

static char *set_api_description(const char *arg)
{
	opt_set_charp(arg, &opt_api_description);

	return NULL;
}

static char *set_api_mcast_des(const char *arg)
{
	opt_set_charp(arg, &opt_api_mcast_des);

	return NULL;
}

#ifdef USE_ICARUS
extern const struct bfg_set_device_definition icarus_set_device_funcs[];

static char *set_icarus_options(const char *arg)
{
	if (strchr(arg, ','))
		return "icarus-options no longer supports comma-delimited syntax, see README.FPGA for better control";
	applog(LOG_WARNING, "icarus-options is deprecated! See README.FPGA for better control");
	
	char *opts = strdup(arg), *argdup;
	argdup = opts;
	const struct bfg_set_device_definition *sdf = icarus_set_device_funcs;
	const char *drivers[] = {"antminer", "cairnsmore", "erupter", "icarus"};
	char *saveptr, *opt;
	for (int i = 0; i < 4; ++i, ++sdf)
	{
		opt = strtok_r(opts, ":", &saveptr);
		opts = NULL;
		
		if (!opt)
			break;
		
		if (!opt[0])
			continue;
		
		for (int j = 0; j < 4; ++j)
			add_set_device_option("%s:%s=%s", drivers[j], sdf->optname, opt);
	}
	free(argdup);
	return NULL;
}

static char *set_icarus_timing(const char *arg)
{
	if (strchr(arg, ','))
		return "icarus-timing no longer supports comma-delimited syntax, see README.FPGA for better control";
	applog(LOG_WARNING, "icarus-timing is deprecated! See README.FPGA for better control");
	
	const char *drivers[] = {"antminer", "cairnsmore", "erupter", "icarus"};
	for (int j = 0; j < 4; ++j)
		add_set_device_option("%s:timing=%s", drivers[j], arg);
	return NULL;
}
#endif

#ifdef USE_AVALON
extern const struct bfg_set_device_definition avalon_set_device_funcs[];

static char *set_avalon_options(const char *arg)
{
	if (strchr(arg, ','))
		return "avalon-options no longer supports comma-delimited syntax, see README.FPGA for better control";
	applog(LOG_WARNING, "avalon-options is deprecated! See README.FPGA for better control");
	
	char *opts = strdup(arg), *argdup;
	argdup = opts;
	const struct bfg_set_device_definition *sdf = avalon_set_device_funcs;
	char *saveptr, *opt;
	for (int i = 0; i < 5; ++i, ++sdf)
	{
		opt = strtok_r(opts, ":", &saveptr);
		opts = NULL;
		
		if (!opt)
			break;
		
		if (!opt[0])
			continue;
		
		add_set_device_option("avalon:%s=%s", sdf->optname, opt);
	}
	free(argdup);
	return NULL;
}
#endif

#ifdef USE_KLONDIKE
static char *set_klondike_options(const char *arg)
{
	int hashclock;
	double temptarget;
	switch (sscanf(arg, "%d:%lf", &hashclock, &temptarget))
	{
		default:
			return "Unrecognised --klondike-options";
		case 2:
			add_set_device_option("klondike:temp-target=%lf", temptarget);
			// fallthru
		case 1:
			add_set_device_option("klondike:clock=%d", hashclock);
	}
	applog(LOG_WARNING, "klondike-options is deprecated! Use --set-device for better control");
	
	return NULL;
}
#endif

__maybe_unused
static char *set_null(const char __maybe_unused *arg)
{
	return NULL;
}

/* These options are available from config file or commandline */
static struct opt_table opt_config_table[] = {
#ifdef WANT_CPUMINE
	OPT_WITH_ARG("--algo",
		     set_algo, show_algo, &opt_algo,
		     "Specify sha256 implementation for CPU mining:\n"
		     "\tfastauto*\tQuick benchmark at startup to pick a working algorithm\n"
		     "\tauto\t\tBenchmark at startup and pick fastest algorithm"
		     "\n\tc\t\tLinux kernel sha256, implemented in C"
#ifdef WANT_SSE2_4WAY
		     "\n\t4way\t\ttcatm's 4-way SSE2 implementation"
#endif
#ifdef WANT_VIA_PADLOCK
		     "\n\tvia\t\tVIA padlock implementation"
#endif
		     "\n\tcryptopp\tCrypto++ C/C++ implementation"
#ifdef WANT_CRYPTOPP_ASM32
		     "\n\tcryptopp_asm32\tCrypto++ 32-bit assembler implementation"
#endif
#ifdef WANT_X8632_SSE2
		     "\n\tsse2_32\t\tSSE2 32 bit implementation for i386 machines"
#endif
#ifdef WANT_X8664_SSE2
		     "\n\tsse2_64\t\tSSE2 64 bit implementation for x86_64 machines"
#endif
#ifdef WANT_X8664_SSE4
		     "\n\tsse4_64\t\tSSE4.1 64 bit implementation for x86_64 machines"
#endif
#ifdef WANT_ALTIVEC_4WAY
    "\n\taltivec_4way\tAltivec implementation for PowerPC G4 and G5 machines"
#endif
		),
	OPT_WITH_ARG("-a",
	             set_algo, show_algo, &opt_algo,
	             opt_hidden),
#endif
	OPT_WITH_ARG("--api-allow",
		     set_api_allow, NULL, NULL,
		     "Allow API access only to the given list of [G:]IP[/Prefix] addresses[/subnets]"),
	OPT_WITH_ARG("--api-description",
		     set_api_description, NULL, NULL,
		     "Description placed in the API status header, default: BFGMiner version"),
	OPT_WITH_ARG("--api-groups",
		     set_api_groups, NULL, NULL,
		     "API one letter groups G:cmd:cmd[,P:cmd:*...] defining the cmds a groups can use"),
	OPT_WITHOUT_ARG("--api-listen",
			opt_set_bool, &opt_api_listen,
			"Enable API, default: disabled"),
	OPT_WITHOUT_ARG("--api-mcast",
			opt_set_bool, &opt_api_mcast,
			"Enable API Multicast listener, default: disabled"),
	OPT_WITH_ARG("--api-mcast-addr",
		     opt_set_charp, opt_show_charp, &opt_api_mcast_addr,
		     "API Multicast listen address"),
	OPT_WITH_ARG("--api-mcast-code",
		     opt_set_charp, opt_show_charp, &opt_api_mcast_code,
		     "Code expected in the API Multicast message, don't use '-'"),
	OPT_WITH_ARG("--api-mcast-des",
		     set_api_mcast_des, NULL, NULL,
		     "Description appended to the API Multicast reply, default: ''"),
	OPT_WITH_ARG("--api-mcast-port",
		     set_int_1_to_65535, opt_show_intval, &opt_api_mcast_port,
		     "API Multicast listen port"),
	OPT_WITHOUT_ARG("--api-network",
			opt_set_bool, &opt_api_network,
			"Allow API (if enabled) to listen on/for any address, default: only 127.0.0.1"),
	OPT_WITH_ARG("--api-port",
		     set_int_1_to_65535, opt_show_intval, &opt_api_port,
		     "Port number of miner API"),
#ifdef HAVE_ADL
	OPT_WITHOUT_ARG("--auto-fan",
			opt_set_bool, &opt_autofan,
			opt_hidden),
	OPT_WITHOUT_ARG("--auto-gpu",
			opt_set_bool, &opt_autoengine,
			opt_hidden),
#endif
	OPT_WITHOUT_ARG("--balance",
		     set_balance, &pool_strategy,
		     "Change multipool strategy from failover to even share balance"),
	OPT_WITHOUT_ARG("--benchmark",
			opt_set_bool, &opt_benchmark,
			"Run BFGMiner in benchmark mode - produces no shares"),
#if defined(USE_BITFORCE)
	OPT_WITHOUT_ARG("--bfl-range",
			opt_set_bool, &opt_bfl_noncerange,
			"Use nonce range on bitforce devices if supported"),
#endif
#ifdef HAVE_CHROOT
        OPT_WITH_ARG("--chroot-dir",
                     opt_set_charp, NULL, &chroot_dir,
                     "Chroot to a directory right after startup"),
#endif
	OPT_WITH_ARG("--cmd-idle",
	             opt_set_charp, NULL, &cmd_idle,
	             "Execute a command when a device is allowed to be idle (rest or wait)"),
	OPT_WITH_ARG("--cmd-sick",
	             opt_set_charp, NULL, &cmd_sick,
	             "Execute a command when a device is declared sick"),
	OPT_WITH_ARG("--cmd-dead",
	             opt_set_charp, NULL, &cmd_dead,
	             "Execute a command when a device is declared dead"),
#if BLKMAKER_VERSION > 1
	OPT_WITH_ARG("--coinbase-addr",
		     set_b58addr, NULL, &opt_coinbase_script,
		     "Set coinbase payout address for solo mining"),
	OPT_WITH_ARG("--coinbase-address|--coinbase-payout|--cbaddress|--cbaddr|--cb-address|--cb-addr|--payout",
		     set_b58addr, NULL, &opt_coinbase_script,
		     opt_hidden),
#endif
#if BLKMAKER_VERSION > 0
	OPT_WITH_ARG("--coinbase-sig",
		     set_strdup, NULL, &opt_coinbase_sig,
		     "Set coinbase signature when possible"),
	OPT_WITH_ARG("--coinbase|--cbsig|--cb-sig|--cb|--prayer",
		     set_strdup, NULL, &opt_coinbase_sig,
		     opt_hidden),
#endif
#ifdef HAVE_CURSES
	OPT_WITHOUT_ARG("--compact",
			opt_set_bool, &opt_compact,
			"Use compact display without per device statistics"),
#endif
#ifdef WANT_CPUMINE
	OPT_WITH_ARG("--cpu-threads",
		     force_nthreads_int, opt_show_intval, &opt_n_threads,
		     "Number of miner CPU threads"),
	OPT_WITH_ARG("-t",
	             force_nthreads_int, opt_show_intval, &opt_n_threads,
	             opt_hidden),
#endif
	OPT_WITHOUT_ARG("--debug|-D",
		     enable_debug, &opt_debug,
		     "Enable debug output"),
	OPT_WITHOUT_ARG("--debuglog",
		     opt_set_bool, &opt_debug,
		     "Enable debug logging"),
	OPT_WITHOUT_ARG("--device-protocol-dump",
			opt_set_bool, &opt_dev_protocol,
			"Verbose dump of device protocol-level activities"),
	OPT_WITH_ARG("--device|-d",
		     set_devices, NULL, NULL,
	             "Enable only devices matching pattern (default: all)"),
	OPT_WITHOUT_ARG("--disable-rejecting",
			opt_set_bool, &opt_disable_pool,
			"Automatically disable pools that continually reject shares"),
#ifdef USE_LIBMICROHTTPD
	OPT_WITH_ARG("--http-port",
	             opt_set_intval, opt_show_intval, &httpsrv_port,
	             "Port number to listen on for HTTP getwork miners (-1 means disabled)"),
#endif
	OPT_WITH_ARG("--expiry",
		     set_int_0_to_9999, opt_show_intval, &opt_expiry,
		     "Upper bound on how many seconds after getting work we consider a share from it stale (w/o longpoll active)"),
	OPT_WITH_ARG("-E",
	             set_int_0_to_9999, opt_show_intval, &opt_expiry,
	             opt_hidden),
	OPT_WITH_ARG("--expiry-lp",
		     set_int_0_to_9999, opt_show_intval, &opt_expiry_lp,
		     "Upper bound on how many seconds after getting work we consider a share from it stale (with longpoll active)"),
	OPT_WITHOUT_ARG("--failover-only",
			opt_set_bool, &opt_fail_only,
			"Don't leak work to backup pools when primary pool is lagging"),
	OPT_WITH_ARG("--failover-switch-delay",
			set_int_1_to_65535, opt_show_intval, &opt_fail_switch_delay,
			"Delay in seconds before switching back to a failed pool"),
#ifdef USE_FPGA
	OPT_WITHOUT_ARG("--force-dev-init",
	        opt_set_bool, &opt_force_dev_init,
	        "Always initialize devices when possible (such as bitstream uploads to some FPGAs)"),
#endif
#ifdef HAVE_OPENCL
	OPT_WITH_ARG("--gpu-dyninterval",
		     set_int_1_to_65535, opt_show_intval, &opt_dynamic_interval,
		     opt_hidden),
	OPT_WITH_ARG("--gpu-platform",
		     set_int_0_to_9999, opt_show_intval, &opt_platform_id,
		     "Select OpenCL platform ID to use for GPU mining"),
	OPT_WITH_ARG("--gpu-threads|-g",
	             set_gpu_threads, opt_show_intval, &opt_g_threads,
	             opt_hidden),
#ifdef HAVE_ADL
	OPT_WITH_ARG("--gpu-engine",
		     set_gpu_engine, NULL, NULL,
	             opt_hidden),
	OPT_WITH_ARG("--gpu-fan",
		     set_gpu_fan, NULL, NULL,
	             opt_hidden),
	OPT_WITH_ARG("--gpu-map",
		     set_gpu_map, NULL, NULL,
		     "Map OpenCL to ADL device order manually, paired CSV (e.g. 1:0,2:1 maps OpenCL 1 to ADL 0, 2 to 1)"),
	OPT_WITH_ARG("--gpu-memclock",
		     set_gpu_memclock, NULL, NULL,
	             opt_hidden),
	OPT_WITH_ARG("--gpu-memdiff",
		     set_gpu_memdiff, NULL, NULL,
	             opt_hidden),
	OPT_WITH_ARG("--gpu-powertune",
		     set_gpu_powertune, NULL, NULL,
	             opt_hidden),
	OPT_WITHOUT_ARG("--gpu-reorder",
			opt_set_bool, &opt_reorder,
			"Attempt to reorder GPU devices according to PCI Bus ID"),
	OPT_WITH_ARG("--gpu-vddc",
		     set_gpu_vddc, NULL, NULL,
	             opt_hidden),
#endif
#ifdef USE_SCRYPT
	OPT_WITH_ARG("--lookup-gap",
		     set_lookup_gap, NULL, NULL,
	             opt_hidden),
#endif
	OPT_WITH_ARG("--intensity|-I",
	             set_intensity, NULL, NULL,
	             opt_hidden),
#endif
#if defined(HAVE_OPENCL) || defined(USE_MODMINER) || defined(USE_X6500) || defined(USE_ZTEX)
	OPT_WITH_ARG("--kernel-path",
		     opt_set_charp, opt_show_charp, &opt_kernel_path,
	             "Specify a path to where bitstream and kernel files are"),
	OPT_WITH_ARG("-K",
	             opt_set_charp, opt_show_charp, &opt_kernel_path,
	             opt_hidden),
#endif
#ifdef HAVE_OPENCL
	OPT_WITH_ARG("--kernel|-k",
	             set_kernel, NULL, NULL,
	             opt_hidden),
#endif
#ifdef USE_ICARUS
	OPT_WITH_ARG("--icarus-options",
		     set_icarus_options, NULL, NULL,
		     opt_hidden),
	OPT_WITH_ARG("--icarus-timing",
		     set_icarus_timing, NULL, NULL,
		     opt_hidden),
#endif
#ifdef USE_AVALON
	OPT_WITH_ARG("--avalon-options",
		     set_avalon_options, NULL, NULL,
		     opt_hidden),
#endif
#ifdef USE_KLONDIKE
	OPT_WITH_ARG("--klondike-options",
		     set_klondike_options, NULL, NULL,
		     "Set klondike options clock:temptarget"),
#endif
	OPT_WITHOUT_ARG("--load-balance",
		     set_loadbalance, &pool_strategy,
		     "Change multipool strategy from failover to quota based balance"),
	OPT_WITH_ARG("--log|-l",
		     set_int_0_to_9999, opt_show_intval, &opt_log_interval,
		     "Interval in seconds between log output"),
	OPT_WITH_ARG("--log-file|-L",
	             set_log_file, NULL, NULL,
	             "Append log file for output messages"),
	OPT_WITH_ARG("--logfile",
	             set_log_file, NULL, NULL,
	             opt_hidden),
	OPT_WITHOUT_ARG("--log-microseconds",
	                opt_set_bool, &opt_log_microseconds,
	                "Include microseconds in log output"),
#if defined(unix) || defined(__APPLE__)
	OPT_WITH_ARG("--monitor|-m",
		     opt_set_charp, NULL, &opt_stderr_cmd,
		     "Use custom pipe cmd for output messages"),
#endif // defined(unix)
	OPT_WITHOUT_ARG("--net-delay",
			opt_set_bool, &opt_delaynet,
			"Impose small delays in networking to avoid overloading slow routers"),
	OPT_WITHOUT_ARG("--no-adl",
			opt_set_bool, &opt_noadl,
#ifdef HAVE_ADL
			"Disable the ATI display library used for monitoring and setting GPU parameters"
#else
			opt_hidden
#endif
			),
	OPT_WITHOUT_ARG("--no-gbt",
			opt_set_invbool, &want_gbt,
			"Disable getblocktemplate support"),
	OPT_WITHOUT_ARG("--no-getwork",
			opt_set_invbool, &want_getwork,
			"Disable getwork support"),
	OPT_WITHOUT_ARG("--no-hotplug",
#ifdef HAVE_BFG_HOTPLUG
	                opt_set_invbool, &opt_hotplug,
	                "Disable hotplug detection"
#else
	                set_null, &opt_hotplug,
	                opt_hidden
#endif
	),
	OPT_WITHOUT_ARG("--no-longpoll",
			opt_set_invbool, &want_longpoll,
			"Disable X-Long-Polling support"),
	OPT_WITHOUT_ARG("--no-pool-disable",
			opt_set_invbool, &opt_disable_pool,
			opt_hidden),
	OPT_WITHOUT_ARG("--no-client-reconnect",
			opt_set_invbool, &opt_disable_client_reconnect,
			opt_hidden),
	OPT_WITHOUT_ARG("--no-pool-redirect",
			disable_pool_redirect, NULL,
			"Ignore pool requests to redirect to another server"),
	OPT_WITHOUT_ARG("--no-restart",
			opt_set_invbool, &opt_restart,
			"Do not attempt to restart devices that hang"
	),
	OPT_WITHOUT_ARG("--no-show-processors",
			opt_set_invbool, &opt_show_procs,
			opt_hidden),
	OPT_WITHOUT_ARG("--no-show-procs",
			opt_set_invbool, &opt_show_procs,
			opt_hidden),
	OPT_WITHOUT_ARG("--no-stratum",
			opt_set_invbool, &want_stratum,
			"Disable Stratum detection"),
	OPT_WITHOUT_ARG("--no-submit-stale",
			opt_set_invbool, &opt_submit_stale,
		        "Don't submit shares if they are detected as stale"),
#ifdef HAVE_OPENCL
	OPT_WITHOUT_ARG("--no-opencl-binaries",
	                set_no_opencl_binaries, NULL,
	                opt_hidden),
#endif
	OPT_WITHOUT_ARG("--no-unicode",
#ifdef USE_UNICODE
	                opt_set_invbool, &use_unicode,
	                "Don't use Unicode characters in TUI"
#else
	                set_null, &use_unicode,
	                opt_hidden
#endif
	),
	OPT_WITH_ARG("--noncelog",
		     set_noncelog, NULL, NULL,
		     "Create log of all nonces found"),
	OPT_WITH_ARG("--pass|-p",
		     set_pass, NULL, NULL,
		     "Password for bitcoin JSON-RPC server"),
	OPT_WITHOUT_ARG("--per-device-stats",
			opt_set_bool, &want_per_device_stats,
			"Force verbose mode and output per-device statistics"),
	OPT_WITH_ARG("--userpass|-O",  // duplicate to ensure config loads it before pool-priority
	             set_userpass, NULL, NULL,
	             opt_hidden),
	OPT_WITH_ARG("--pool-priority",
			 set_pool_priority, NULL, NULL,
			 "Priority for just the previous-defined pool"),
	OPT_WITH_ARG("--pool-proxy|-x",
		     set_pool_proxy, NULL, NULL,
		     "Proxy URI to use for connecting to just the previous-defined pool"),
	OPT_WITH_ARG("--force-rollntime",  // NOTE: must be after --pass for config file ordering
			 set_pool_force_rollntime, NULL, NULL,
			 opt_hidden),
	OPT_WITHOUT_ARG("--protocol-dump|-P",
			opt_set_bool, &opt_protocol,
			"Verbose dump of protocol-level activities"),
	OPT_WITH_ARG("--queue|-Q",
		     set_int_0_to_9999, opt_show_intval, &opt_queue,
		     "Minimum number of work items to have queued (0+)"),
	OPT_WITHOUT_ARG("--quiet|-q",
			opt_set_bool, &opt_quiet,
			"Disable logging output, display status and errors"),
	OPT_WITHOUT_ARG("--quiet-work-updates|--quiet-work-update",
			opt_set_bool, &opt_quiet_work_updates,
			opt_hidden),
	OPT_WITH_ARG("--quit-summary",
	             set_quit_summary, NULL, NULL,
	             "Summary printed when you quit: none/devs/procs/detailed"),
	OPT_WITH_ARG("--quota|-U",
		     set_quota, NULL, NULL,
		     "quota;URL combination for server with load-balance strategy quotas"),
	OPT_WITHOUT_ARG("--real-quiet",
			opt_set_bool, &opt_realquiet,
			"Disable all output"),
	OPT_WITH_ARG("--request-diff",
	             set_request_diff, opt_show_floatval, &request_pdiff,
	             "Request a specific difficulty from pools"),
	OPT_WITH_ARG("--retries",
		     opt_set_intval, opt_show_intval, &opt_retries,
		     "Number of times to retry failed submissions before giving up (-1 means never)"),
	OPT_WITH_ARG("--retry-pause",
		     set_null, NULL, NULL,
		     opt_hidden),
	OPT_WITH_ARG("--rotate",
		     set_rotate, opt_show_intval, &opt_rotate_period,
		     "Change multipool strategy from failover to regularly rotate at N minutes"),
	OPT_WITHOUT_ARG("--round-robin",
		     set_rr, &pool_strategy,
		     "Change multipool strategy from failover to round robin on failure"),
	OPT_WITH_ARG("--scan|-S",
		     add_serial, NULL, NULL,
		     "Configure how to scan for mining devices"),
	OPT_WITH_ARG("--scan-device|--scan-serial|--devscan",
		     add_serial, NULL, NULL,
		     opt_hidden),
	OPT_WITH_ARG("--scan-time",
		     set_int_0_to_9999, opt_show_intval, &opt_scantime,
		     "Upper bound on time spent scanning current work, in seconds"),
	OPT_WITH_ARG("-s",
		     set_int_0_to_9999, opt_show_intval, &opt_scantime,
		     opt_hidden),
	OPT_WITH_ARG("--scantime",
		     set_int_0_to_9999, opt_show_intval, &opt_scantime,
		     opt_hidden),
	OPT_WITH_ARG("--sched-start",
		     set_schedtime, NULL, &schedstart,
		     "Set a time of day in HH:MM to start mining (a once off without a stop time)"),
	OPT_WITH_ARG("--sched-stop",
		     set_schedtime, NULL, &schedstop,
		     "Set a time of day in HH:MM to stop mining (will quit without a start time)"),
#ifdef USE_SCRYPT
	OPT_WITHOUT_ARG("--scrypt",
			opt_set_bool, &opt_scrypt,
			"Use the scrypt algorithm for mining (non-bitcoin)"),
#endif
	OPT_WITH_ARG("--set-device|--set",
			opt_string_elist_add, NULL, &opt_set_device_list,
			"Set default parameters on devices; eg, NFY:osc6_bits=50"),
#if defined(USE_SCRYPT) && defined(HAVE_OPENCL)
	OPT_WITH_ARG("--shaders",
		     set_shaders, NULL, NULL,
	             opt_hidden),
#endif
#ifdef HAVE_PWD_H
        OPT_WITH_ARG("--setuid",
                     opt_set_charp, NULL, &opt_setuid,
                     "Username of an unprivileged user to run as"),
#endif
	OPT_WITH_ARG("--sharelog",
		     set_sharelog, NULL, NULL,
		     "Append share log to file"),
	OPT_WITH_ARG("--shares",
		     opt_set_floatval, NULL, &opt_shares,
		     "Quit after mining 2^32 * N hashes worth of shares (default: unlimited)"),
	OPT_WITHOUT_ARG("--show-processors",
			opt_set_bool, &opt_show_procs,
			"Show per processor statistics in summary"),
	OPT_WITHOUT_ARG("--show-procs",
			opt_set_bool, &opt_show_procs,
			opt_hidden),
	OPT_WITH_ARG("--skip-security-checks",
			set_int_0_to_9999, NULL, &opt_skip_checks,
			"Skip security checks sometimes to save bandwidth; only check 1/<arg>th of the time (default: never skip)"),
	OPT_WITH_ARG("--socks-proxy",
		     opt_set_charp, NULL, &opt_socks_proxy,
		     "Set socks proxy (host:port)"),
#ifdef USE_LIBEVENT
	OPT_WITH_ARG("--stratum-port",
	             opt_set_intval, opt_show_intval, &stratumsrv_port,
	             "Port number to listen on for stratum miners (-1 means disabled)"),
#endif
	OPT_WITHOUT_ARG("--submit-stale",
			opt_set_bool, &opt_submit_stale,
	                opt_hidden),
	OPT_WITH_ARG("--submit-threads",
	                opt_set_intval, opt_show_intval, &opt_submit_threads,
	                "Minimum number of concurrent share submissions (default: 64)"),
#ifdef HAVE_SYSLOG_H
	OPT_WITHOUT_ARG("--syslog",
			opt_set_bool, &use_syslog,
			"Use system log for output messages (default: standard error)"),
#endif
	OPT_WITH_ARG("--temp-cutoff",
		     set_temp_cutoff, NULL, &opt_cutofftemp,
		     opt_hidden),
	OPT_WITH_ARG("--temp-hysteresis",
		     set_int_1_to_10, opt_show_intval, &opt_hysteresis,
		     "Set how much the temperature can fluctuate outside limits when automanaging speeds"),
#ifdef HAVE_ADL
	OPT_WITH_ARG("--temp-overheat",
		     set_temp_overheat, opt_show_intval, &opt_overheattemp,
	             opt_hidden),
#endif
	OPT_WITH_ARG("--temp-target",
		     set_temp_target, NULL, NULL,
		     opt_hidden),
	OPT_WITHOUT_ARG("--text-only|-T",
			opt_set_invbool, &use_curses,
#ifdef HAVE_CURSES
			"Disable ncurses formatted screen output"
#else
			opt_hidden
#endif
	),
#if defined(USE_SCRYPT) && defined(HAVE_OPENCL)
	OPT_WITH_ARG("--thread-concurrency",
		     set_thread_concurrency, NULL, NULL,
	             opt_hidden),
#endif
#ifdef USE_UNICODE
	OPT_WITHOUT_ARG("--unicode",
	                opt_set_bool, &use_unicode,
	                "Use Unicode characters in TUI"),
#endif
	OPT_WITH_ARG("--url|-o",
		     set_url, NULL, NULL,
		     "URL for bitcoin JSON-RPC server"),
	OPT_WITH_ARG("--user|-u",
		     set_user, NULL, NULL,
		     "Username for bitcoin JSON-RPC server"),
#ifdef HAVE_OPENCL
	OPT_WITH_ARG("--vectors|-v",
	             set_vector, NULL, NULL,
	             opt_hidden),
#endif
	OPT_WITHOUT_ARG("--verbose",
			opt_set_bool, &opt_log_output,
			"Log verbose output to stderr as well as status output"),
	OPT_WITHOUT_ARG("--verbose-work-updates|--verbose-work-update",
			opt_set_invbool, &opt_quiet_work_updates,
			opt_hidden),
	OPT_WITHOUT_ARG("--weighed-stats",
	                opt_set_bool, &opt_weighed_stats,
	                "Display statistics weighed to difficulty 1"),
#ifdef HAVE_OPENCL
	OPT_WITH_ARG("--worksize|-w",
	             set_worksize, NULL, NULL,
	             opt_hidden),
#endif
	OPT_WITHOUT_ARG("--unittest",
			opt_set_bool, &opt_unittest, opt_hidden),
	OPT_WITH_ARG("--userpass|-O",
		     set_userpass, NULL, NULL,
		     "Username:Password pair for bitcoin JSON-RPC server"),
	OPT_WITHOUT_ARG("--worktime",
			opt_set_bool, &opt_worktime,
			"Display extra work time debug information"),
	OPT_WITH_ARG("--pools",
			opt_set_bool, NULL, NULL, opt_hidden),
	OPT_ENDTABLE
};

static char *load_config(const char *arg, void __maybe_unused *unused);

static int fileconf_load;

static char *parse_config(json_t *config, bool fileconf)
{
	static char err_buf[200];
	struct opt_table *opt;
	json_t *val;

	if (fileconf && !fileconf_load)
		fileconf_load = 1;

	for (opt = opt_config_table; opt->type != OPT_END; opt++) {
		char *p, *name, *sp;

		/* We don't handle subtables. */
		assert(!(opt->type & OPT_SUBTABLE));

		if (!opt->names)
			continue;

		/* Pull apart the option name(s). */
		name = strdup(opt->names);
		for (p = strtok_r(name, "|", &sp); p; p = strtok_r(NULL, "|", &sp)) {
			char *err = "Invalid value";

			/* Ignore short options. */
			if (p[1] != '-')
				continue;

			val = json_object_get(config, p+2);
			if (!val)
				continue;

			if (opt->type & OPT_HASARG) {
			  if (json_is_string(val)) {
				err = opt->cb_arg(json_string_value(val),
						  opt->u.arg);
			  } else if (json_is_number(val)) {
					char buf[256], *p, *q;
					snprintf(buf, 256, "%f", json_number_value(val));
					if ( (p = strchr(buf, '.')) ) {
						// Trim /\.0*$/ to work properly with integer-only arguments
						q = p;
						while (*(++q) == '0') {}
						if (*q == '\0')
							*p = '\0';
					}
					err = opt->cb_arg(buf, opt->u.arg);
			  } else if (json_is_array(val)) {
				int n, size = json_array_size(val);

				err = NULL;
				for (n = 0; n < size && !err; n++) {
					if (json_is_string(json_array_get(val, n)))
						err = opt->cb_arg(json_string_value(json_array_get(val, n)), opt->u.arg);
					else if (json_is_object(json_array_get(val, n)))
						err = parse_config(json_array_get(val, n), false);
				}
			  }
			} else if (opt->type & OPT_NOARG) {
				if (json_is_true(val))
					err = opt->cb(opt->u.arg);
				else if (json_is_boolean(val)) {
					if (opt->cb == (void*)opt_set_bool)
						err = opt_set_invbool(opt->u.arg);
					else if (opt->cb == (void*)opt_set_invbool)
						err = opt_set_bool(opt->u.arg);
				}
			}

			if (err) {
				/* Allow invalid values to be in configuration
				 * file, just skipping over them provided the
				 * JSON is still valid after that. */
				if (fileconf) {
					applog(LOG_ERR, "Invalid config option %s: %s", p, err);
					fileconf_load = -1;
				} else {
					snprintf(err_buf, sizeof(err_buf), "Parsing JSON option %s: %s",
						p, err);
					return err_buf;
				}
			}
		}
		free(name);
	}

	val = json_object_get(config, JSON_INCLUDE_CONF);
	if (val && json_is_string(val))
		return load_config(json_string_value(val), NULL);

	return NULL;
}

char *cnfbuf = NULL;

static char *load_config(const char *arg, void __maybe_unused *unused)
{
	json_error_t err;
	json_t *config;
	char *json_error;
	size_t siz;

	if (!cnfbuf)
		cnfbuf = strdup(arg);

	if (++include_count > JSON_MAX_DEPTH)
		return JSON_MAX_DEPTH_ERR;

#if JANSSON_MAJOR_VERSION > 1
	config = json_load_file(arg, 0, &err);
#else
	config = json_load_file(arg, &err);
#endif
	if (!json_is_object(config)) {
		siz = JSON_LOAD_ERROR_LEN + strlen(arg) + strlen(err.text);
		json_error = malloc(siz);
		if (!json_error)
			quit(1, "Malloc failure in json error");

		snprintf(json_error, siz, JSON_LOAD_ERROR, arg, err.text);
		return json_error;
	}

	config_loaded = true;

	/* Parse the config now, so we can override it.  That can keep pointers
	 * so don't free config object. */
	return parse_config(config, true);
}

static void load_default_config(void)
{
	cnfbuf = malloc(PATH_MAX);

#if defined(unix)
	if (getenv("HOME") && *getenv("HOME")) {
	        strcpy(cnfbuf, getenv("HOME"));
		strcat(cnfbuf, "/");
	} else
		strcpy(cnfbuf, "");
	char *dirp = cnfbuf + strlen(cnfbuf);
	strcpy(dirp, ".bfgminer/");
	strcat(dirp, def_conf);
	if (access(cnfbuf, R_OK))
		// No BFGMiner config, try Cgminer's...
		strcpy(dirp, ".cgminer/cgminer.conf");
#else
	strcpy(cnfbuf, "");
	strcat(cnfbuf, def_conf);
#endif
	if (!access(cnfbuf, R_OK))
		load_config(cnfbuf, NULL);
	else {
		free(cnfbuf);
		cnfbuf = NULL;
	}
}

extern const char *opt_argv0;

static char *opt_verusage_and_exit(const char *extra)
{
	puts(packagename);
	printf("  Lowlevel:%s\n", BFG_LOWLLIST);
	printf("  Drivers:%s\n", BFG_DRIVERLIST);
	printf("  Algorithms:%s\n", BFG_ALGOLIST);
	printf("  Options:%s\n", BFG_OPTLIST);
	printf("%s", opt_usage(opt_argv0, extra));
	fflush(stdout);
	exit(0);
}

/* These options are parsed before anything else */
static struct opt_table opt_early_table[] = {
	OPT_EARLY_WITH_ARG("--config|-c",
	                   set_bool_ignore_arg, NULL, &config_loaded,
	                   opt_hidden),
	OPT_EARLY_WITHOUT_ARG("--no-config",
	                opt_set_bool, &config_loaded,
	                "Inhibit loading default config file"),
	OPT_ENDTABLE
};

/* These options are available from commandline only */
static struct opt_table opt_cmdline_table[] = {
	OPT_WITH_ARG("--config|-c",
		     load_config, NULL, NULL,
		     "Load a JSON-format configuration file\n"
		     "See example.conf for an example configuration."),
	OPT_EARLY_WITHOUT_ARG("--no-config",
	                opt_set_bool, &config_loaded,
	                "Inhibit loading default config file"),
	OPT_WITHOUT_ARG("--help|-h",
			opt_verusage_and_exit, NULL,
			"Print this message"),
#ifdef HAVE_OPENCL
	OPT_WITHOUT_ARG("--ndevs|-n",
			print_ndevs_and_exit, &nDevs,
			opt_hidden),
#endif
	OPT_WITHOUT_ARG("--version|-V",
			opt_version_and_exit, packagename,
			"Display version and exit"),
	OPT_ENDTABLE
};

static bool jobj_binary(const json_t *obj, const char *key,
			void *buf, size_t buflen, bool required)
{
	const char *hexstr;
	json_t *tmp;

	tmp = json_object_get(obj, key);
	if (unlikely(!tmp)) {
		if (unlikely(required))
			applog(LOG_ERR, "JSON key '%s' not found", key);
		return false;
	}
	hexstr = json_string_value(tmp);
	if (unlikely(!hexstr)) {
		applog(LOG_ERR, "JSON key '%s' is not a string", key);
		return false;
	}
	if (!hex2bin(buf, hexstr, buflen))
		return false;

	return true;
}

static void calc_midstate(struct work *work)
{
	union {
		unsigned char c[64];
		uint32_t i[16];
	} data;

	swap32yes(&data.i[0], work->data, 16);
	sha256_ctx ctx;
	sha256_init(&ctx);
	sha256_update(&ctx, data.c, 64);
	memcpy(work->midstate, ctx.h, sizeof(work->midstate));
	swap32tole(work->midstate, work->midstate, 8);
}

static
struct bfg_tmpl_ref *tmpl_makeref(blktemplate_t * const tmpl)
{
	struct bfg_tmpl_ref * const tr = malloc(sizeof(*tr));
	*tr = (struct bfg_tmpl_ref){
		.tmpl = tmpl,
		.refcount = 1,
	};
	mutex_init(&tr->mutex);
	return tr;
}

static
void tmpl_incref(struct bfg_tmpl_ref * const tr)
{
	mutex_lock(&tr->mutex);
	++tr->refcount;
	mutex_unlock(&tr->mutex);
}

void tmpl_decref(struct bfg_tmpl_ref * const tr)
{
	mutex_lock(&tr->mutex);
	bool free_tmpl = !--tr->refcount;
	mutex_unlock(&tr->mutex);
	if (free_tmpl)
	{
		blktmpl_free(tr->tmpl);
		mutex_destroy(&tr->mutex);
		free(tr);
	}
}

static struct work *make_work(void)
{
	struct work *work = calloc(1, sizeof(struct work));

	if (unlikely(!work))
		quit(1, "Failed to calloc work in make_work");

	cg_wlock(&control_lock);
	work->id = total_work++;
	cg_wunlock(&control_lock);

	return work;
}

/* This is the central place all work that is about to be retired should be
 * cleaned to remove any dynamically allocated arrays within the struct */
void clean_work(struct work *work)
{
	free(work->job_id);
	bytes_free(&work->nonce2);
	free(work->nonce1);
	if (work->device_data_free_func)
		work->device_data_free_func(work);

	if (work->tr)
		tmpl_decref(work->tr);

	memset(work, 0, sizeof(struct work));
}

/* All dynamically allocated work structs should be freed here to not leak any
 * ram from arrays allocated within the work struct */
void free_work(struct work *work)
{
	clean_work(work);
	free(work);
}

static const char *workpadding_bin = "\0\0\0\x80\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\x80\x02\0\0";

// Must only be called with ch_lock held!
static
void __update_block_title(const unsigned char *hash_swap)
{
	if (hash_swap) {
		char tmp[17];
		// Only provided when the block has actually changed
		free(current_hash);
		current_hash = malloc(3 /* ... */ + 16 /* block hash segment */ + 1);
		bin2hex(tmp, &hash_swap[24], 8);
		memset(current_hash, '.', 3);
		memcpy(&current_hash[3], tmp, 17);
		known_blkheight_current = false;
	} else if (likely(known_blkheight_current)) {
		return;
	}
	if (current_block_id == known_blkheight_blkid) {
		// FIXME: The block number will overflow this sometime around AD 2025-2027
		if (known_blkheight < 1000000) {
			memmove(&current_hash[3], &current_hash[11], 8);
			snprintf(&current_hash[11], 20-11, " #%6u", known_blkheight);
		}
		known_blkheight_current = true;
	}
}

static
void have_block_height(uint32_t block_id, uint32_t blkheight)
{
	if (known_blkheight == blkheight)
		return;
	applog(LOG_DEBUG, "Learned that block id %08" PRIx32 " is height %" PRIu32, (uint32_t)be32toh(block_id), blkheight);
	cg_wlock(&ch_lock);
	known_blkheight = blkheight;
	known_blkheight_blkid = block_id;
	block_subsidy = 5000000000LL >> (blkheight / 210000);
	if (block_id == current_block_id)
		__update_block_title(NULL);
	cg_wunlock(&ch_lock);
}

static
void pool_set_opaque(struct pool *pool, bool opaque)
{
	if (pool->swork.opaque == opaque)
		return;
	
	pool->swork.opaque = opaque;
	if (opaque)
		applog(LOG_WARNING, "Pool %u is hiding block contents from us",
		       pool->pool_no);
	else
		applog(LOG_NOTICE, "Pool %u now providing block contents to us",
		       pool->pool_no);
}

bool pool_may_redirect_to(struct pool * const pool, const char * const uri)
{
	const char *p = strchr(pool->rpc_url, '#');
	if (unlikely(p && strstr(&p[1], "redirect")))
		return true;
	return match_domains(pool->rpc_url, strlen(pool->rpc_url), uri, strlen(uri));
}

void set_simple_ntime_roll_limit(struct ntime_roll_limits * const nrl, const uint32_t ntime_base, const int ntime_roll, const struct timeval * const tvp_ref)
{
	const int offsets = max(ntime_roll, 60);
	*nrl = (struct ntime_roll_limits){
		.min = ntime_base,
		.max = ntime_base + ntime_roll,
		.tv_ref = *tvp_ref,
		.minoff = -offsets,
		.maxoff = offsets,
	};
}

void work_set_simple_ntime_roll_limit(struct work * const work, const int ntime_roll, const struct timeval * const tvp_ref)
{
	set_simple_ntime_roll_limit(&work->ntime_roll_limits, upk_u32be(work->data, 0x44), ntime_roll, tvp_ref);
}

static double target_diff(const unsigned char *);

#define GBT_XNONCESZ (sizeof(uint32_t))

#if BLKMAKER_VERSION > 4
#define blkmk_append_coinbase_safe(tmpl, append, appendsz)  \
       blkmk_append_coinbase_safe2(tmpl, append, appendsz, GBT_XNONCESZ, false)
#endif

static bool work_decode(struct pool *pool, struct work *work, json_t *val)
{
	json_t *res_val = json_object_get(val, "result");
	json_t *tmp_val;
	bool ret = false;
	struct timeval tv_now;

	if (unlikely(detect_algo == 1)) {
		json_t *tmp = json_object_get(res_val, "algorithm");
		const char *v = tmp ? json_string_value(tmp) : "";
		if (strncasecmp(v, "scrypt", 6))
			detect_algo = 2;
	}
	
	timer_set_now(&tv_now);
	
	if (work->tr)
	{
		blktemplate_t * const tmpl = work->tr->tmpl;
		const char *err = blktmpl_add_jansson(tmpl, res_val, tv_now.tv_sec);
		if (err) {
			applog(LOG_ERR, "blktmpl error: %s", err);
			return false;
		}
		work->rolltime = blkmk_time_left(tmpl, tv_now.tv_sec);
#if BLKMAKER_VERSION > 1
		if (opt_coinbase_script.sz)
		{
			bool newcb;
#if BLKMAKER_VERSION > 2
			blkmk_init_generation2(tmpl, opt_coinbase_script.data, opt_coinbase_script.sz, &newcb);
#else
			newcb = !tmpl->cbtxn;
			blkmk_init_generation(tmpl, opt_coinbase_script.data, opt_coinbase_script.sz);
#endif
			if (newcb)
			{
				ssize_t ae = blkmk_append_coinbase_safe(tmpl, &template_nonce, sizeof(template_nonce));
				if (ae < (ssize_t)sizeof(template_nonce))
					applog(LOG_WARNING, "Cannot append template-nonce to coinbase on pool %u (%"PRId64") - you might be wasting hashing!", work->pool->pool_no, (int64_t)ae);
				++template_nonce;
			}
		}
#endif
#if BLKMAKER_VERSION > 0
		{
			ssize_t ae = blkmk_append_coinbase_safe(tmpl, opt_coinbase_sig, 101);
			static bool appenderr = false;
			if (ae <= 0) {
				if (opt_coinbase_sig) {
					applog((appenderr ? LOG_DEBUG : LOG_WARNING), "Cannot append coinbase signature at all on pool %u (%"PRId64")", pool->pool_no, (int64_t)ae);
					appenderr = true;
				}
			} else if (ae >= 3 || opt_coinbase_sig) {
				const char *cbappend = opt_coinbase_sig;
				const char full[] = PACKAGE " " VERSION;
				if (!cbappend) {
					if ((size_t)ae >= sizeof(full) - 1)
						cbappend = full;
					else if ((size_t)ae >= sizeof(PACKAGE) - 1)
						cbappend = PACKAGE;
					else
						cbappend = "BFG";
				}
				size_t cbappendsz = strlen(cbappend);
				static bool truncatewarning = false;
				if (cbappendsz <= (size_t)ae) {
					if (cbappendsz < (size_t)ae)
						// If we have space, include the trailing \0
						++cbappendsz;
					ae = cbappendsz;
					truncatewarning = false;
				} else {
					char *tmp = malloc(ae + 1);
					memcpy(tmp, opt_coinbase_sig, ae);
					tmp[ae] = '\0';
					applog((truncatewarning ? LOG_DEBUG : LOG_WARNING),
					       "Pool %u truncating appended coinbase signature at %"PRId64" bytes: %s(%s)",
					       pool->pool_no, (int64_t)ae, tmp, &opt_coinbase_sig[ae]);
					free(tmp);
					truncatewarning = true;
				}
				ae = blkmk_append_coinbase_safe(tmpl, cbappend, ae);
				if (ae <= 0) {
					applog((appenderr ? LOG_DEBUG : LOG_WARNING), "Error appending coinbase signature (%"PRId64")", (int64_t)ae);
					appenderr = true;
				} else
					appenderr = false;
			}
		}
#endif
		if (blkmk_get_data(tmpl, work->data, 80, tv_now.tv_sec, NULL, &work->dataid) < 76)
			return false;
		swap32yes(work->data, work->data, 80 / 4);
		memcpy(&work->data[80], workpadding_bin, 48);
		
		work->ntime_roll_limits = (struct ntime_roll_limits){
			.min = tmpl->mintime,
			.max = tmpl->maxtime,
			.tv_ref = tv_now,
			.minoff = tmpl->mintimeoff,
			.maxoff = tmpl->maxtimeoff,
		};

		const struct blktmpl_longpoll_req *lp;
		if ((lp = blktmpl_get_longpoll(tmpl)) && ((!pool->lp_id) || strcmp(lp->id, pool->lp_id))) {
			free(pool->lp_id);
			pool->lp_id = strdup(lp->id);

#if 0  /* This just doesn't work :( */
			curl_socket_t sock = pool->lp_socket;
			if (sock != CURL_SOCKET_BAD) {
				pool->lp_socket = CURL_SOCKET_BAD;
				applog(LOG_WARNING, "Pool %u long poll request hanging, reconnecting", pool->pool_no);
				shutdown(sock, SHUT_RDWR);
			}
#endif
		}
	}
	else
	if (unlikely(!jobj_binary(res_val, "data", work->data, sizeof(work->data), true))) {
		applog(LOG_ERR, "JSON inval data");
		return false;
	}
	else
		work_set_simple_ntime_roll_limit(work, 0, &tv_now);

	if (!jobj_binary(res_val, "midstate", work->midstate, sizeof(work->midstate), false)) {
		// Calculate it ourselves
		applog(LOG_DEBUG, "Calculating midstate locally");
		calc_midstate(work);
	}

	if (unlikely(!jobj_binary(res_val, "target", work->target, sizeof(work->target), true))) {
		applog(LOG_ERR, "JSON inval target");
		return false;
	}
	if (work->tr)
	{
		for (size_t i = 0; i < sizeof(work->target) / 2; ++i)
		{
			int p = (sizeof(work->target) - 1) - i;
			unsigned char c = work->target[i];
			work->target[i] = work->target[p];
			work->target[p] = c;
		}
	}

	if ( (tmp_val = json_object_get(res_val, "height")) ) {
		uint32_t blkheight = json_number_value(tmp_val);
		uint32_t block_id = ((uint32_t*)work->data)[1];
		have_block_height(block_id, blkheight);
	}

	memset(work->hash, 0, sizeof(work->hash));

	work->tv_staged = tv_now;
	
#if BLKMAKER_VERSION > 4
	if (work->tr)
	{
		blktemplate_t * const tmpl = work->tr->tmpl;
		uint8_t buf[80];
		int16_t expire;
		uint8_t *cbtxn;
		size_t cbtxnsz;
		size_t cbextranonceoffset;
		int branchcount;
		libblkmaker_hash_t *branches;
		
		if (blkmk_get_mdata(tmpl, buf, sizeof(buf), tv_now.tv_sec, &expire, &cbtxn, &cbtxnsz, &cbextranonceoffset, &branchcount, &branches, GBT_XNONCESZ, false))
		{
			struct stratum_work * const swork = &pool->swork;
			const size_t branchdatasz = branchcount * 0x20;
			
			cg_wlock(&pool->data_lock);
			swork->tr = work->tr;
			bytes_assimilate_raw(&swork->coinbase, cbtxn, cbtxnsz, cbtxnsz);
			swork->nonce2_offset = cbextranonceoffset;
			bytes_assimilate_raw(&swork->merkle_bin, branches, branchdatasz, branchdatasz);
			swork->merkles = branchcount;
			memcpy(swork->header1, &buf[0], 36);
			swork->ntime = le32toh(*(uint32_t *)(&buf[68]));
			swork->tv_received = tv_now;
			memcpy(swork->diffbits, &buf[72], 4);
			memcpy(swork->target, work->target, sizeof(swork->target));
			free(swork->job_id);
			swork->job_id = NULL;
			swork->clean = true;
			swork->work_restart_id = pool->work_restart_id;
			// FIXME: Do something with expire
			pool->nonce2sz = swork->n2size = GBT_XNONCESZ;
			pool->nonce2 = 0;
			cg_wunlock(&pool->data_lock);
		}
		else
			applog(LOG_DEBUG, "blkmk_get_mdata failed for pool %u", pool->pool_no);
	}
#endif  // BLKMAKER_VERSION > 4
	pool_set_opaque(pool, !work->tr);

	ret = true;

	return ret;
}

/* Returns whether the pool supports local work generation or not. */
static bool pool_localgen(struct pool *pool)
{
	return (pool->last_work_copy || pool->has_stratum);
}

int dev_from_id(int thr_id)
{
	struct cgpu_info *cgpu = get_thr_cgpu(thr_id);

	return cgpu->device_id;
}

/* Create an exponentially decaying average over the opt_log_interval */
void decay_time(double *f, double fadd, double fsecs)
{
	double ftotal, fprop;

	fprop = 1.0 - 1 / (exp(fsecs / (double)opt_log_interval));
	ftotal = 1.0 + fprop;
	*f += (fadd * fprop);
	*f /= ftotal;
}

static int __total_staged(void)
{
	return HASH_COUNT(staged_work);
}

static int total_staged(void)
{
	int ret;

	mutex_lock(stgd_lock);
	ret = __total_staged();
	mutex_unlock(stgd_lock);

	return ret;
}

#ifdef HAVE_CURSES
WINDOW *mainwin, *statuswin, *logwin;
#endif
double total_secs = 1.0;
static char statusline[256];
/* logstart is where the log window should start */
static int devcursor, logstart, logcursor;
#ifdef HAVE_CURSES
/* statusy is where the status window goes up to in cases where it won't fit at startup */
static int statusy;
static int devsummaryYOffset;
static int total_lines;
#endif
#ifdef HAVE_OPENCL
struct cgpu_info gpus[MAX_GPUDEVICES]; /* Maximum number apparently possible */
#endif
struct cgpu_info *cpus;

bool _bfg_console_cancel_disabled;
int _bfg_console_prev_cancelstate;

#ifdef HAVE_CURSES
#define   lock_curses()  bfg_console_lock()
#define unlock_curses()  bfg_console_unlock()

static bool curses_active_locked(void)
{
	bool ret;

	lock_curses();
	ret = curses_active;
	if (!ret)
		unlock_curses();
	return ret;
}

// Cancellable getch
int my_cancellable_getch(void)
{
	// This only works because the macro only hits direct getch() calls
	typedef int (*real_getch_t)(void);
	const real_getch_t real_getch = __real_getch;

	int type, rv;
	bool sct;

	sct = !pthread_setcanceltype(PTHREAD_CANCEL_ASYNCHRONOUS, &type);
	rv = real_getch();
	if (sct)
		pthread_setcanceltype(type, &type);

	return rv;
}

#ifdef PDCURSES
static
int bfg_wresize(WINDOW *win, int lines, int columns)
{
	int rv = wresize(win, lines, columns);
	int x, y;
	getyx(win, y, x);
	if (unlikely(y >= lines || x >= columns))
	{
		if (y >= lines)
			y = lines - 1;
		if (x >= columns)
			x = columns - 1;
		wmove(win, y, x);
	}
	return rv;
}
#else
#	define bfg_wresize wresize
#endif

#endif

void tailsprintf(char *buf, size_t bufsz, const char *fmt, ...)
{
	va_list ap;
	size_t presz = strlen(buf);
	
	va_start(ap, fmt);
	vsnprintf(&buf[presz], bufsz - presz, fmt, ap);
	va_end(ap);
}

double stats_elapsed(struct cgminer_stats *stats)
{
	struct timeval now;
	double elapsed;

	if (stats->start_tv.tv_sec == 0)
		elapsed = total_secs;
	else {
		cgtime(&now);
		elapsed = tdiff(&now, &stats->start_tv);
	}

	if (elapsed < 1.0)
		elapsed = 1.0;

	return elapsed;
}

bool drv_ready(struct cgpu_info *cgpu)
{
	switch (cgpu->status) {
		case LIFE_INIT:
		case LIFE_DEAD2:
			return false;
		default:
			return true;
	}
}

double cgpu_utility(struct cgpu_info *cgpu)
{
	double dev_runtime = cgpu_runtime(cgpu);
	return cgpu->utility = cgpu->accepted / dev_runtime * 60;
}

#define suffix_string(val, buf, bufsiz, sigdigits)  do{ \
	_Static_assert(sigdigits == 0, "suffix_string only supported with sigdigits==0");  \
	format_unit3(buf, bufsiz, FUP_DIFF, "", H2B_SHORTV, val, -1);  \
}while(0)

static float
utility_to_hashrate(double utility)
{
	return utility * 0x4444444;
}

static const char*_unitchar = "pn\xb5m kMGTPEZY?";
static const int _unitbase = 4;

static
void pick_unit(float hashrate, unsigned char *unit)
{
	unsigned char i;
	
	if (hashrate == 0)
	{
		if (*unit < _unitbase)
			*unit = _unitbase;
		return;
	}
	
	hashrate *= 1e12;
	for (i = 0; i < *unit; ++i)
		hashrate /= 1e3;
	
	// 1000 but with tolerance for floating-point rounding, avoid showing "1000.0"
	while (hashrate >= 999.95)
	{
		hashrate /= 1e3;
		if (likely(_unitchar[*unit] != '?'))
			++*unit;
	}
}
#define hashrate_pick_unit(hashrate, unit)  pick_unit(hashrate, unit)

enum h2bs_fmt {
	H2B_NOUNIT,  // "xxx.x"
	H2B_SHORT,   // "xxx.xMH/s"
	H2B_SPACED,  // "xxx.x MH/s"
	H2B_SHORTV,  // Like H2B_SHORT, but omit space for base unit
};

enum bfu_floatprec {
	FUP_INTEGER,
	FUP_HASHES,
	FUP_BTC,
	FUP_DIFF,
};

static
int format_unit3(char *buf, size_t sz, enum bfu_floatprec fprec, const char *measurement, enum h2bs_fmt fmt, float hashrate, signed char unitin)
{
	char *s = buf;
	unsigned char prec, i, unit;
	int rv = 0;
	
	if (unitin == -1)
	{
		unit = 0;
		hashrate_pick_unit(hashrate, &unit);
	}
	else
		unit = unitin;
	
	hashrate *= 1e12;
	
	for (i = 0; i < unit; ++i)
		hashrate /= 1000;
	
	switch (fprec)
	{
	case FUP_HASHES:
		// 100 but with tolerance for floating-point rounding, max "99.99" then "100.0"
		if (hashrate >= 99.995 || unit < 6)
			prec = 1;
		else
			prec = 2;
		_SNP("%5.*f", prec, hashrate);
		break;
	case FUP_INTEGER:
		_SNP("%3d", (int)hashrate);
		break;
	case FUP_BTC:
		if (hashrate >= 99.995)
			prec = 0;
		else
			prec = 2;
		_SNP("%5.*f", prec, hashrate);
		break;
	case FUP_DIFF:
		if (unit > _unitbase)
			_SNP("%.3g", hashrate);
		else
			_SNP("%u", (unsigned int)hashrate);
	}
	
	if (fmt != H2B_NOUNIT)
	{
		char uc[3] = {_unitchar[unit], '\0'};
		switch (fmt) {
			case H2B_SPACED:
				_SNP(" ");
			default:
				break;
			case H2B_SHORTV:
				if (isspace(uc[0]))
					uc[0] = '\0';
		}
		
		if (uc[0] == '\xb5')
			// Convert to UTF-8
			snprintf(uc, sizeof(uc), "%s", U8_MICRO);
		
		_SNP("%s%s", uc, measurement);
	}
	
	return rv;
}
#define format_unit2(buf, sz, floatprec, measurement, fmt, n, unit)  \
	format_unit3(buf, sz, floatprec ? FUP_HASHES : FUP_INTEGER, measurement, fmt, n, unit)

static
char *_multi_format_unit(char **buflist, size_t *bufszlist, bool floatprec, const char *measurement, enum h2bs_fmt fmt, const char *delim, int count, const float *numbers, bool isarray)
{
	unsigned char unit = 0;
	bool allzero = true;
	int i;
	size_t delimsz = 0;
	char *buf = buflist[0];
	size_t bufsz = bufszlist[0];
	size_t itemwidth = (floatprec ? 5 : 3);
	
	if (!isarray)
		delimsz = strlen(delim);
	
	for (i = 0; i < count; ++i)
		if (numbers[i] != 0)
		{
			pick_unit(numbers[i], &unit);
			allzero = false;
		}
	
	if (allzero)
		unit = _unitbase;
	
	--count;
	for (i = 0; i < count; ++i)
	{
		format_unit2(buf, bufsz, floatprec, NULL, H2B_NOUNIT, numbers[i], unit);
		if (isarray)
		{
			buf = buflist[i + 1];
			bufsz = bufszlist[i + 1];
		}
		else
		{
			buf += itemwidth;
			bufsz -= itemwidth;
			if (delimsz > bufsz)
				delimsz = bufsz;
			memcpy(buf, delim, delimsz);
			buf += delimsz;
			bufsz -= delimsz;
		}
	}
	
	// Last entry has the unit
	format_unit2(buf, bufsz, floatprec, measurement, fmt, numbers[count], unit);
	
	return buflist[0];
}
#define multi_format_unit2(buf, bufsz, floatprec, measurement, fmt, delim, count, ...)  _multi_format_unit((char *[]){buf}, (size_t[]){bufsz}, floatprec, measurement, fmt, delim, count, (float[]){ __VA_ARGS__ }, false)
#define multi_format_unit_array2(buflist, bufszlist, floatprec, measurement, fmt, count, ...)  (void)_multi_format_unit(buflist, bufszlist, floatprec, measurement, fmt, NULL, count, (float[]){ __VA_ARGS__ }, true)

static
int percentf3(char * const buf, size_t sz, double p, const double t)
{
	char *s = buf;
	int rv = 0;
	if (!p)
		_SNP("none");
	else
	if (t <= p)
		_SNP("100%%");
	else
	{

	p /= t;
	if (p < 0.00995)  // 0.01 but with tolerance for floating-point rounding, max ".99%"
		_SNP(".%02.0f%%", p * 10000);  // ".01%"
	else
	if (p < 0.0995)  // 0.1 but with tolerance for floating-point rounding, max "9.9%"
		_SNP("%.1f%%", p * 100);  // "9.1%"
	else
		_SNP("%3.0f%%", p * 100);  // " 99%"

	}
	
	return rv;
}
#define percentf4(buf, bufsz, p, t)  percentf3(buf, bufsz, p, p + t)

static
void test_decimal_width()
{
	// The pipe character at end of each line should perfectly line up
	char printbuf[512];
	char testbuf1[64];
	char testbuf2[64];
	char testbuf3[64];
	char testbuf4[64];
	double testn;
	int width;
	int saved;
	
	// Hotspots around 0.1 and 0.01
	saved = -1;
	for (testn = 0.09; testn <= 0.11; testn += 0.000001) {
		percentf3(testbuf1, sizeof(testbuf1), testn,  1.0);
		percentf3(testbuf2, sizeof(testbuf2), testn, 10.0);
		width = snprintf(printbuf, sizeof(printbuf), "%10g %s %s |", testn, testbuf1, testbuf2);
		if (unlikely((saved != -1) && (width != saved))) {
			applog(LOG_ERR, "Test width mismatch in percentf3! %d not %d at %10g", width, saved, testn);
			applog(LOG_ERR, "%s", printbuf);
		}
		saved = width;
	}
	
	// Hotspot around 100 (but test this in several units because format_unit2 also has unit<2 check)
	saved = -1;
	for (testn = 99.0; testn <= 101.0; testn += 0.0001) {
		format_unit2(testbuf1, sizeof(testbuf1), true, "x", H2B_SHORT, testn      , -1);
		format_unit2(testbuf2, sizeof(testbuf2), true, "x", H2B_SHORT, testn * 1e3, -1);
		format_unit2(testbuf3, sizeof(testbuf3), true, "x", H2B_SHORT, testn * 1e6, -1);
		snprintf(printbuf, sizeof(printbuf), "%10g %s %s %s |", testn, testbuf1, testbuf2, testbuf3);
		width = utf8_strlen(printbuf);
		if (unlikely((saved != -1) && (width != saved))) {
			applog(LOG_ERR, "Test width mismatch in format_unit2! %d not %d at %10g", width, saved, testn);
			applog(LOG_ERR, "%s", printbuf);
		}
		saved = width;
	}
	
	// Hotspot around unit transition boundary in pick_unit
	saved = -1;
	for (testn = 999.0; testn <= 1001.0; testn += 0.0001) {
		format_unit2(testbuf1, sizeof(testbuf1), true, "x", H2B_SHORT, testn      , -1);
		format_unit2(testbuf2, sizeof(testbuf2), true, "x", H2B_SHORT, testn * 1e3, -1);
		format_unit2(testbuf3, sizeof(testbuf3), true, "x", H2B_SHORT, testn * 1e6, -1);
		format_unit2(testbuf4, sizeof(testbuf4), true, "x", H2B_SHORT, testn * 1e9, -1);
		snprintf(printbuf, sizeof(printbuf), "%10g %s %s %s %s |", testn, testbuf1, testbuf2, testbuf3, testbuf4);
		width = utf8_strlen(printbuf);
		if (unlikely((saved != -1) && (width != saved))) {
			applog(LOG_ERR, "Test width mismatch in pick_unit! %d not %d at %10g", width, saved, testn);
			applog(LOG_ERR, "%s", printbuf);
		}
		saved = width;
	}
}

#ifdef HAVE_CURSES
static void adj_width(int var, int *length);
#endif

#ifdef HAVE_CURSES
static int awidth = 1, rwidth = 1, swidth = 1, hwwidth = 1;

static
void format_statline(char *buf, size_t bufsz, const char *cHr, const char *aHr, const char *uHr, int accepted, int rejected, int stale, int wnotaccepted, int waccepted, int hwerrs, int bad_diff1, int allnonces)
{
	char rejpcbuf[6];
	char bnbuf[6];
	
	adj_width(accepted, &awidth);
	adj_width(rejected, &rwidth);
	adj_width(stale, &swidth);
	adj_width(hwerrs, &hwwidth);
	percentf4(rejpcbuf, sizeof(rejpcbuf), wnotaccepted, waccepted);
	percentf3(bnbuf, sizeof(bnbuf), bad_diff1, allnonces);
	
	tailsprintf(buf, bufsz, "%s/%s/%s | A:%*d R:%*d+%*d(%s) HW:%*d/%s",
	            cHr, aHr, uHr,
	            awidth, accepted,
	            rwidth, rejected,
	            swidth, stale,
	            rejpcbuf,
	            hwwidth, hwerrs,
	            bnbuf
	);
}

static
const char *pool_proto_str(const struct pool * const pool)
{
	if (pool->idle)
		return "Dead ";
	if (pool->has_stratum)
		return "Strtm";
	if (pool->lp_url && pool->proto != pool->lp_proto)
		return "Mixed";
	switch (pool->proto)
	{
		case PLP_GETBLOCKTEMPLATE:
			return " GBT ";
		case PLP_GETWORK:
			return "GWork";
		default:
			return "Alive";
	}
}

#endif

static inline
void temperature_column(char *buf, size_t bufsz, bool maybe_unicode, const float * const temp)
{
	if (!(use_unicode && have_unicode_degrees))
		maybe_unicode = false;
	if (temp && *temp > 0.)
		if (maybe_unicode)
			snprintf(buf, bufsz, "%4.1f"U8_DEGREE"C", *temp);
		else
			snprintf(buf, bufsz, "%4.1fC", *temp);
	else
	{
		if (temp)
			snprintf(buf, bufsz, "     ");
		if (maybe_unicode)
			tailsprintf(buf, bufsz, " ");
	}
	tailsprintf(buf, bufsz, " | ");
}

void get_statline3(char *buf, size_t bufsz, struct cgpu_info *cgpu, bool for_curses, bool opt_show_procs)
{
#ifndef HAVE_CURSES
	assert(for_curses == false);
#endif
	struct device_drv *drv = cgpu->drv;
	enum h2bs_fmt hashrate_style = for_curses ? H2B_SHORT : H2B_SPACED;
	char cHr[ALLOC_H2B_NOUNIT+1], aHr[ALLOC_H2B_NOUNIT+1], uHr[max(ALLOC_H2B_SHORT, ALLOC_H2B_SPACED)+3+1];
	char rejpcbuf[6];
	char bnbuf[6];
	double dev_runtime;
	
	if (!opt_show_procs)
		cgpu = cgpu->device;
	
	dev_runtime = cgpu_runtime(cgpu);
	
	double rolling, mhashes;
	int accepted, rejected, stale;
	double waccepted;
	double wnotaccepted;
	int hwerrs;
	double bad_diff1, good_diff1;
	
	rolling = mhashes = waccepted = wnotaccepted = 0;
	accepted = rejected = stale = hwerrs = bad_diff1 = good_diff1 = 0;
	
	{
		struct cgpu_info *slave = cgpu;
		for (int i = 0; i < cgpu->procs; ++i, (slave = slave->next_proc))
		{
			slave->utility = slave->accepted / dev_runtime * 60;
			slave->utility_diff1 = slave->diff_accepted / dev_runtime * 60;
			
			rolling += slave->rolling;
			mhashes += slave->total_mhashes;
			if (opt_weighed_stats)
			{
				accepted += slave->diff_accepted;
				rejected += slave->diff_rejected;
				stale += slave->diff_stale;
			}
			else
			{
				accepted += slave->accepted;
				rejected += slave->rejected;
				stale += slave->stale;
			}
			waccepted += slave->diff_accepted;
			wnotaccepted += slave->diff_rejected + slave->diff_stale;
			hwerrs += slave->hw_errors;
			bad_diff1 += slave->bad_diff1;
			good_diff1 += slave->diff1;
			
			if (opt_show_procs)
				break;
		}
	}
	
	double wtotal = (waccepted + wnotaccepted);
	
	multi_format_unit_array2(
		((char*[]){cHr, aHr, uHr}),
		((size_t[]){sizeof(cHr), sizeof(aHr), sizeof(uHr)}),
		true, "h/s", hashrate_style,
		3,
		1e6*rolling,
		1e6*mhashes / dev_runtime,
		utility_to_hashrate(good_diff1 * (wtotal ? (waccepted / wtotal) : 1) * 60 / dev_runtime));

	// Processor representation
#ifdef HAVE_CURSES
	if (for_curses)
	{
		if (opt_show_procs)
			snprintf(buf, bufsz, " %"PRIprepr": ", cgpu->proc_repr);
		else
			snprintf(buf, bufsz, " %s: ", cgpu->dev_repr);
	}
	else
#endif
		snprintf(buf, bufsz, "%s ", opt_show_procs ? cgpu->proc_repr_ns : cgpu->dev_repr_ns);
	
	if (include_serial_in_statline && cgpu->dev_serial)
		tailsprintf(buf, bufsz, "[serial=%s] ", cgpu->dev_serial);
	
	if (unlikely(cgpu->status == LIFE_INIT))
	{
		tailsprintf(buf, bufsz, "Initializing...");
		return;
	}
	
	{
		const size_t bufln = strlen(buf);
		const size_t abufsz = (bufln >= bufsz) ? 0 : (bufsz - bufln);
		
		if (likely(cgpu->status != LIFE_DEAD2) && drv->override_statline_temp2 && drv->override_statline_temp2(buf, bufsz, cgpu, opt_show_procs))
			temperature_column(&buf[bufln], abufsz, for_curses, NULL);
		else
		{
			float temp = cgpu->temp;
			if (!opt_show_procs)
			{
				// Find the highest temperature of all processors
				struct cgpu_info *proc = cgpu;
				for (int i = 0; i < cgpu->procs; ++i, (proc = proc->next_proc))
					if (proc->temp > temp)
						temp = proc->temp;
			}
			temperature_column(&buf[bufln], abufsz, for_curses, &temp);
		}
	}
	
#ifdef HAVE_CURSES
	if (for_curses)
	{
		const char *cHrStatsOpt[] = {AS_BAD("DEAD "), AS_BAD("SICK "), "OFF  ", AS_BAD("REST "), AS_BAD(" ERR "), AS_BAD("WAIT "), cHr};
		const char *cHrStats;
		int cHrStatsI = (sizeof(cHrStatsOpt) / sizeof(*cHrStatsOpt)) - 1;
		bool all_dead = true, all_off = true, all_rdrv = true;
		struct cgpu_info *proc = cgpu;
		for (int i = 0; i < cgpu->procs; ++i, (proc = proc->next_proc))
		{
			switch (cHrStatsI) {
				default:
					if (proc->status == LIFE_WAIT)
						cHrStatsI = 5;
				case 5:
					if (proc->deven == DEV_RECOVER_ERR)
						cHrStatsI = 4;
				case 4:
					if (proc->deven == DEV_RECOVER)
						cHrStatsI = 3;
				case 3:
					if (proc->status == LIFE_SICK || proc->status == LIFE_DEAD || proc->status == LIFE_DEAD2)
					{
						cHrStatsI = 1;
						all_off = false;
					}
					else
					{
						if (likely(proc->deven == DEV_ENABLED))
							all_off = false;
						if (proc->deven != DEV_RECOVER_DRV)
							all_rdrv = false;
					}
				case 1:
					break;
			}
			if (likely(proc->status != LIFE_DEAD && proc->status != LIFE_DEAD2))
				all_dead = false;
			if (opt_show_procs)
				break;
		}
		if (unlikely(all_dead))
			cHrStatsI = 0;
		else
		if (unlikely(all_off))
			cHrStatsI = 2;
		cHrStats = cHrStatsOpt[cHrStatsI];
		if (cHrStatsI == 2 && all_rdrv)
			cHrStats = " RST ";
		
		format_statline(buf, bufsz,
		                cHrStats,
		                aHr, uHr,
		                accepted, rejected, stale,
		                wnotaccepted, waccepted,
		                hwerrs,
		                bad_diff1, bad_diff1 + good_diff1);
	}
	else
#endif
	{
		percentf4(rejpcbuf, sizeof(rejpcbuf), wnotaccepted, waccepted);
		percentf4(bnbuf, sizeof(bnbuf), bad_diff1, good_diff1);
		tailsprintf(buf, bufsz, "%ds:%s avg:%s u:%s | A:%d R:%d+%d(%s) HW:%d/%s",
			opt_log_interval,
			cHr, aHr, uHr,
			accepted,
			rejected,
			stale,
			rejpcbuf,
			hwerrs,
			bnbuf
		);
	}
}

#define get_statline(buf, bufsz, cgpu)               get_statline3(buf, bufsz, cgpu, false, opt_show_procs)
#define get_statline2(buf, bufsz, cgpu, for_curses)  get_statline3(buf, bufsz, cgpu, for_curses, opt_show_procs)

static void text_print_status(int thr_id)
{
	struct cgpu_info *cgpu;
	char logline[256];

	cgpu = get_thr_cgpu(thr_id);
	if (cgpu) {
		get_statline(logline, sizeof(logline), cgpu);
		printf("%s\n", logline);
	}
}

#ifdef HAVE_CURSES
static int attr_bad = A_BOLD;

#ifdef WIN32
#define swprintf snwprintf
#endif

static
void bfg_waddstr(WINDOW *win, const char *s)
{
	const char *p = s;
	int32_t w;
	int wlen;
	unsigned char stop_ascii = (use_unicode ? '|' : 0x80);
	
	while (true)
	{
		while (likely(p[0] == '\n' || (p[0] >= 0x20 && p[0] < stop_ascii)))
		{
			// Printable ASCII
			++p;
		}
		if (p != s)
			waddnstr(win, s, p - s);
		w = utf8_decode(p, &wlen);
		s = p += wlen;
		switch(w)
		{
			// NOTE: U+F000-U+F7FF are reserved for font hacks
			case '\0':
				return;
			case 0xb5:  // micro symbol
				w = unicode_micro;
				goto default_addch;
			case 0xf000:  // "bad" off
				wattroff(win, attr_bad);
				break;
			case 0xf001:  // "bad" on
				wattron(win, attr_bad);
				break;
#ifdef USE_UNICODE
			case '|':
				wadd_wch(win, WACS_VLINE);
				break;
#endif
			case 0x2500:  // BOX DRAWINGS LIGHT HORIZONTAL
			case 0x2534:  // BOX DRAWINGS LIGHT UP AND HORIZONTAL
				if (!use_unicode)
				{
					waddch(win, '-');
					break;
				}
#ifdef USE_UNICODE
				wadd_wch(win, (w == 0x2500) ? WACS_HLINE : WACS_BTEE);
				break;
#endif
			case 0x2022:
				if (w > WCHAR_MAX || !iswprint(w))
					w = '*';
			default:
default_addch:
				if (w > WCHAR_MAX || !(iswprint(w) || w == '\n'))
				{
#if REPLACEMENT_CHAR <= WCHAR_MAX
					if (iswprint(REPLACEMENT_CHAR))
						w = REPLACEMENT_CHAR;
					else
#endif
						w = '?';
				}
				{
#ifdef USE_UNICODE
					wchar_t wbuf[0x10];
					int wbuflen = sizeof(wbuf) / sizeof(*wbuf);
					wbuflen = swprintf(wbuf, wbuflen, L"%lc", (wint_t)w);
					waddnwstr(win, wbuf, wbuflen);
#else
					wprintw(win, "%lc", (wint_t)w);
#endif
				}
		}
	}
}

static inline
void bfg_hline(WINDOW *win, int y)
{
	int maxx, __maybe_unused maxy;
	getmaxyx(win, maxy, maxx);
#ifdef USE_UNICODE
	if (use_unicode)
		mvwhline_set(win, y, 0, WACS_HLINE, maxx);
	else
#endif
		mvwhline(win, y, 0, '-', maxx);
}

// Spaces until end of line, using current attributes (ie, not completely clear)
static
void bfg_wspctoeol(WINDOW * const win, const int offset)
{
	int x, maxx;
	int __maybe_unused y;
	getmaxyx(win, y, maxx);
	getyx(win, y, x);
	const int space_count = (maxx - x) - offset;
	
	// Check for negative - terminal too narrow
	if (space_count <= 0)
		return;
	
	char buf[space_count];
	memset(buf, ' ', space_count);
	waddnstr(win, buf, space_count);
}

static int menu_attr = A_REVERSE;

#define CURBUFSIZ 256
#define cg_mvwprintw(win, y, x, fmt, ...) do { \
	char tmp42[CURBUFSIZ]; \
	snprintf(tmp42, sizeof(tmp42), fmt, ##__VA_ARGS__); \
	wmove(win, y, x);  \
	bfg_waddstr(win, tmp42); \
} while (0)
#define cg_wprintw(win, fmt, ...) do { \
	char tmp42[CURBUFSIZ]; \
	snprintf(tmp42, sizeof(tmp42), fmt, ##__VA_ARGS__); \
	bfg_waddstr(win, tmp42); \
} while (0)

static bool pool_unworkable(const struct pool *);

/* Must be called with curses mutex lock held and curses_active */
static void curses_print_status(const int ts)
{
	struct pool *pool = currentpool;
	struct timeval now, tv;
	float efficiency;
	double income;
	int logdiv;

	efficiency = total_bytes_xfer ? total_diff_accepted * 2048. / total_bytes_xfer : 0.0;

	wattron(statuswin, attr_title);
	cg_mvwprintw(statuswin, 0, 0, " " PACKAGE " version " VERSION " - Started: %s", datestamp);
	timer_set_now(&now);
	{
		unsigned int days, hours;
		div_t d;
		
		timersub(&now, &miner_started, &tv);
		d = div(tv.tv_sec, 86400);
		days = d.quot;
		d = div(d.rem, 3600);
		hours = d.quot;
		d = div(d.rem, 60);
		cg_wprintw(statuswin, " - [%3u day%c %02d:%02d:%02d]"
			, days
			, (days == 1) ? ' ' : 's'
			, hours
			, d.quot
			, d.rem
		);
	}
	bfg_wspctoeol(statuswin, 0);
	wattroff(statuswin, attr_title);
	
	wattron(statuswin, menu_attr);
	wmove(statuswin, 1, 0);
	bfg_waddstr(statuswin, " [M]anage devices [P]ool management [S]ettings [D]isplay options ");
	bfg_wspctoeol(statuswin, 14);
	bfg_waddstr(statuswin, "[H]elp [Q]uit ");
	wattroff(statuswin, menu_attr);

	if ((pool_strategy == POOL_LOADBALANCE  || pool_strategy == POOL_BALANCE) && enabled_pools > 1) {
		char poolinfo[20], poolinfo2[20];
		int poolinfooff = 0, poolinfo2off, workable_pools = 0;
		double lowdiff = DBL_MAX, highdiff = -1;
		struct pool *lowdiff_pool = pools[0], *highdiff_pool = pools[0];
		time_t oldest_work_restart = time(NULL) + 1;
		struct pool *oldest_work_restart_pool = pools[0];
		for (int i = 0; i < total_pools; ++i)
		{
			if (pool_unworkable(pools[i]))
				continue;
			
			// NOTE: Only set pool var when it's workable; if only one is, it gets used by single-pool code
			pool = pools[i];
			++workable_pools;
			
			if (poolinfooff < sizeof(poolinfo))
				poolinfooff += snprintf(&poolinfo[poolinfooff], sizeof(poolinfo) - poolinfooff, "%u,", pool->pool_no);
			
			struct cgminer_pool_stats * const pool_stats = &pool->cgminer_pool_stats;
			if (pool_stats->last_diff < lowdiff)
			{
				lowdiff = pool_stats->last_diff;
				lowdiff_pool = pool;
			}
			if (pool_stats->last_diff > highdiff)
			{
				highdiff = pool_stats->last_diff;
				highdiff_pool = pool;
			}
			
			if (oldest_work_restart >= pool->work_restart_time)
			{
				oldest_work_restart = pool->work_restart_time;
				oldest_work_restart_pool = pool;
			}
		}
		if (workable_pools == 1)
			goto one_workable_pool;
		poolinfo2off = snprintf(poolinfo2, sizeof(poolinfo2), "%u (", workable_pools);
		if (poolinfooff > sizeof(poolinfo2) - poolinfo2off - 1)
			snprintf(&poolinfo2[poolinfo2off], sizeof(poolinfo2) - poolinfo2off, "%.*s...)", (int)(sizeof(poolinfo2) - poolinfo2off - 5), poolinfo);
		else
			snprintf(&poolinfo2[poolinfo2off], sizeof(poolinfo2) - poolinfo2off, "%.*s)%*s", (int)(poolinfooff - 1), poolinfo, (int)(sizeof(poolinfo2)), "");
		cg_mvwprintw(statuswin, 2, 0, " Pools: %s  Diff:%s%s%s  %c  LU:%s",
		             poolinfo2,
		             lowdiff_pool->diff,
		             (lowdiff == highdiff) ? "" : "-",
		             (lowdiff == highdiff) ? "" : highdiff_pool->diff,
		             have_longpoll ? '+' : '-',
		             oldest_work_restart_pool->work_restart_timestamp);
	}
	else
	{
one_workable_pool: ;
		char pooladdr[19];
		{
			const char *rawaddr = pool->sockaddr_url;
			BFGINIT(rawaddr, pool->rpc_url);
			size_t pooladdrlen = strlen(rawaddr);
			if (pooladdrlen > 20)
				snprintf(pooladdr, sizeof(pooladdr), "...%s", &rawaddr[pooladdrlen - (sizeof(pooladdr) - 4)]);
			else
				snprintf(pooladdr, sizeof(pooladdr), "%*s", -(int)(sizeof(pooladdr) - 1), rawaddr);
		}
		cg_mvwprintw(statuswin, 2, 0, " Pool%2u: %s  Diff:%s  %c%s  LU:%s  User:%s",
		             pool->pool_no, pooladdr, pool->diff,
		             have_longpoll ? '+' : '-', pool_proto_str(pool),
		             pool->work_restart_timestamp,
		             pool->rpc_user);
	}
	wclrtoeol(statuswin);
	cg_mvwprintw(statuswin, 3, 0, " Block: %s  Diff:%s (%s)  Started: %s",
		  current_hash, block_diff, net_hashrate, blocktime);
	
	income = total_diff_accepted * 3600 * block_subsidy / total_secs / current_diff;
	char bwstr[(ALLOC_H2B_SHORT*2)+3+1], incomestr[ALLOC_H2B_SHORT+6+1];
	format_unit3(incomestr, sizeof(incomestr), FUP_BTC, "BTC/hr", H2B_SHORT, income/1e8, -1);
	cg_mvwprintw(statuswin, 4, 0, " ST:%d  F:%d  NB:%d  AS:%d  BW:[%s]  E:%.2f  I:%s  BS:%s",
		ts,
		total_go + total_ro,
		new_blocks,
		total_submitting,
		multi_format_unit2(bwstr, sizeof(bwstr),
		                   false, "B/s", H2B_SHORT, "/", 2,
		                  (float)(total_bytes_rcvd / total_secs),
		                  (float)(total_bytes_sent / total_secs)),
		efficiency,
		incomestr,
		best_share);
	wclrtoeol(statuswin);
	
	mvwaddstr(statuswin, 5, 0, " ");
	bfg_waddstr(statuswin, statusline);
	wclrtoeol(statuswin);
	
	logdiv = statusy - 1;
	bfg_hline(statuswin, 6);
	bfg_hline(statuswin, logdiv);
#ifdef USE_UNICODE
	if (use_unicode)
	{
		int offset = 8 /* device */ + 5 /* temperature */ + 1 /* padding space */;
		if (opt_show_procs && !opt_compact)
			++offset;  // proc letter
		if (have_unicode_degrees)
			++offset;  // degrees symbol
		mvwadd_wch(statuswin, 6, offset, WACS_PLUS);
		mvwadd_wch(statuswin, logdiv, offset, WACS_BTEE);
		offset += 24;  // hashrates etc
		mvwadd_wch(statuswin, 6, offset, WACS_PLUS);
		mvwadd_wch(statuswin, logdiv, offset, WACS_BTEE);
	}
#endif
}

static void adj_width(int var, int *length)
{
	if ((int)(log10(var) + 1) > *length)
		(*length)++;
}

static int dev_width;

static void curses_print_devstatus(struct cgpu_info *cgpu)
{
	char logline[256];
	int ypos;

	if (opt_compact)
		return;

	/* Check this isn't out of the window size */
	if (opt_show_procs)
	ypos = cgpu->cgminer_id;
	else
	{
		if (cgpu->proc_id)
			return;
		ypos = cgpu->device_line_id;
	}
	ypos += devsummaryYOffset;
	if (ypos < 0)
		return;
	ypos += devcursor - 1;
	if (ypos >= statusy - 1)
		return;

	if (wmove(statuswin, ypos, 0) == ERR)
		return;
	
	get_statline2(logline, sizeof(logline), cgpu, true);
	if (selecting_device && (opt_show_procs ? (selected_device == cgpu->cgminer_id) : (devices[selected_device]->device == cgpu)))
		wattron(statuswin, A_REVERSE);
	bfg_waddstr(statuswin, logline);
	wattroff(statuswin, A_REVERSE);

	wclrtoeol(statuswin);
}

static
void _refresh_devstatus(const bool already_have_lock) {
	if ((!opt_compact) && (already_have_lock || curses_active_locked())) {
		int i;
		if (unlikely(!total_devices))
		{
			const int ypos = devcursor - 1;
			if (ypos < statusy - 1 && wmove(statuswin, ypos, 0) != ERR)
			{
				wattron(statuswin, attr_bad);
				bfg_waddstr(statuswin, "NO DEVICES FOUND: Press 'M' and '+' to add");
				wclrtoeol(statuswin);
				wattroff(statuswin, attr_bad);
			}
		}
		for (i = 0; i < total_devices; i++)
			curses_print_devstatus(get_devices(i));
		touchwin(statuswin);
		wrefresh(statuswin);
		if (!already_have_lock)
			unlock_curses();
	}
}
#define refresh_devstatus() _refresh_devstatus(false)

#endif

static void print_status(int thr_id)
{
	if (!curses_active)
		text_print_status(thr_id);
}

#ifdef HAVE_CURSES
static
bool set_statusy(int maxy)
{
	if (loginput_size)
	{
		maxy -= loginput_size;
		if (maxy < 0)
			maxy = 0;
	}
	
	if (logstart < maxy)
		maxy = logstart;
	
	if (statusy == maxy)
		return false;
	
	statusy = maxy;
	logcursor = statusy;
	
	return true;
}

/* Check for window resize. Called with curses mutex locked */
static inline void change_logwinsize(void)
{
	int x, y, logx, logy;

	getmaxyx(mainwin, y, x);
	if (x < 80 || y < 25)
		return;

	if (y > statusy + 2 && statusy < logstart) {
		set_statusy(y - 2);
		mvwin(logwin, logcursor, 0);
		bfg_wresize(statuswin, statusy, x);
	}

	y -= logcursor;
	getmaxyx(logwin, logy, logx);
	/* Detect screen size change */
	if (x != logx || y != logy)
		bfg_wresize(logwin, y, x);
}

static void check_winsizes(void)
{
	if (!use_curses)
		return;
	if (curses_active_locked()) {
		int y, x;

		x = getmaxx(statuswin);
		if (set_statusy(LINES - 2))
		{
			erase();
			bfg_wresize(statuswin, statusy, x);
			getmaxyx(mainwin, y, x);
			y -= logcursor;
			bfg_wresize(logwin, y, x);
			mvwin(logwin, logcursor, 0);
		}
		unlock_curses();
	}
}

static int device_line_id_count;

static void switch_logsize(void)
{
	if (curses_active_locked()) {
		if (opt_compact) {
			logstart = devcursor - 1;
			logcursor = logstart + 1;
		} else {
			total_lines = (opt_show_procs ? total_devices : device_line_id_count) ?: 1;
			logstart = devcursor + total_lines;
			logcursor = logstart;
		}
		unlock_curses();
	}
	check_winsizes();
}

/* For mandatory printing when mutex is already locked */
void _wlog(const char *str)
{
	static bool newline;
	size_t end = strlen(str) - 1;
	
	if (newline)
		bfg_waddstr(logwin, "\n");
	
	if (str[end] == '\n')
	{
		char *s;
		
		newline = true;
		s = alloca(end + 1);
		memcpy(s, str, end);
		s[end] = '\0';
		str = s;
	}
	else
		newline = false;
	
	bfg_waddstr(logwin, str);
}

/* Mandatory printing */
void _wlogprint(const char *str)
{
	if (curses_active_locked()) {
		_wlog(str);
		unlock_curses();
	}
}
#endif

#ifdef HAVE_CURSES
bool _log_curses_only(int prio, const char *datetime, const char *str)
{
	bool high_prio;

	high_prio = (prio == LOG_WARNING || prio == LOG_ERR);

	if (curses_active)
	{
		if (!loginput_size || high_prio) {
			wlog(" %s %s\n", datetime, str);
			if (high_prio) {
				touchwin(logwin);
				wrefresh(logwin);
			}
		}
		return true;
	}
	return false;
}

void clear_logwin(void)
{
	if (curses_active_locked()) {
		wclear(logwin);
		unlock_curses();
	}
}

void logwin_update(void)
{
	if (curses_active_locked()) {
		touchwin(logwin);
		wrefresh(logwin);
		unlock_curses();
	}
}
#endif

static void enable_pool(struct pool *pool)
{
	if (pool->enabled != POOL_ENABLED) {
		enabled_pools++;
		pool->enabled = POOL_ENABLED;
	}
}

#ifdef HAVE_CURSES
static void disable_pool(struct pool *pool)
{
	if (pool->enabled == POOL_ENABLED)
		enabled_pools--;
	pool->enabled = POOL_DISABLED;
}
#endif

static void reject_pool(struct pool *pool)
{
	if (pool->enabled == POOL_ENABLED)
		enabled_pools--;
	pool->enabled = POOL_REJECTING;
}

static double share_diff(const struct work *);

static
void share_result_msg(const struct work *work, const char *disp, const char *reason, bool resubmit, const char *worktime) {
	struct cgpu_info *cgpu;
	const unsigned char *hashpart = &work->hash[opt_scrypt ? 26 : 24];
	char shrdiffdisp[ALLOC_H2B_SHORTV];
	const double tgtdiff = work->work_difficulty;
	char tgtdiffdisp[ALLOC_H2B_SHORTV];
	char where[20];
	
	cgpu = get_thr_cgpu(work->thr_id);
	
	suffix_string(work->share_diff, shrdiffdisp, sizeof(shrdiffdisp), 0);
	suffix_string(tgtdiff, tgtdiffdisp, sizeof(tgtdiffdisp), 0);
	
	if (total_pools > 1)
		snprintf(where, sizeof(where), " pool %d", work->pool->pool_no);
	else
		where[0] = '\0';
	
	applog(LOG_NOTICE, "%s %02x%02x%02x%02x %"PRIprepr"%s Diff %s/%s%s %s%s",
	       disp,
	       (unsigned)hashpart[3], (unsigned)hashpart[2], (unsigned)hashpart[1], (unsigned)hashpart[0],
	       cgpu->proc_repr,
	       where,
	       shrdiffdisp, tgtdiffdisp,
	       reason,
	       resubmit ? "(resubmit)" : "",
	       worktime
	);
}

static bool test_work_current(struct work *);
static void _submit_work_async(struct work *);

static
void maybe_local_submit(const struct work *work)
{
#if BLKMAKER_VERSION > 3
	if (unlikely(work->block && work->tr))
	{
		// This is a block with a full template (GBT)
		// Regardless of the result, submit to local bitcoind(s) as well
		struct work *work_cp;
		char *p;
		
		for (int i = 0; i < total_pools; ++i)
		{
			p = strchr(pools[i]->rpc_url, '#');
			if (likely(!(p && strstr(&p[1], "allblocks"))))
				continue;
			
			applog(LOG_DEBUG, "Attempting submission of full block to pool %d", pools[i]->pool_no);
			work_cp = copy_work(work);
			work_cp->pool = pools[i];
			work_cp->do_foreign_submit = true;
			_submit_work_async(work_cp);
		}
	}
#endif
}

/* Theoretically threads could race when modifying accepted and
 * rejected values but the chance of two submits completing at the
 * same time is zero so there is no point adding extra locking */
static void
share_result(json_t *val, json_t *res, json_t *err, const struct work *work,
	     /*char *hashshow,*/ bool resubmit, char *worktime)
{
	struct pool *pool = work->pool;
	struct cgpu_info *cgpu;

	cgpu = get_thr_cgpu(work->thr_id);

	if ((json_is_null(err) || !err) && (json_is_null(res) || json_is_true(res))) {
		mutex_lock(&stats_lock);
		cgpu->accepted++;
		total_accepted++;
		pool->accepted++;
		cgpu->diff_accepted += work->work_difficulty;
		total_diff_accepted += work->work_difficulty;
		pool->diff_accepted += work->work_difficulty;
		mutex_unlock(&stats_lock);

		pool->seq_rejects = 0;
		cgpu->last_share_pool = pool->pool_no;
		cgpu->last_share_pool_time = time(NULL);
		cgpu->last_share_diff = work->work_difficulty;
		pool->last_share_time = cgpu->last_share_pool_time;
		pool->last_share_diff = work->work_difficulty;
		applog(LOG_DEBUG, "PROOF OF WORK RESULT: true (yay!!!)");
		if (!QUIET) {
			share_result_msg(work, "Accepted", "", resubmit, worktime);
		}
		sharelog("accept", work);
		if (opt_shares && total_diff_accepted >= opt_shares) {
			applog(LOG_WARNING, "Successfully mined %g accepted shares as requested and exiting.", opt_shares);
			kill_work();
			return;
		}

		/* Detect if a pool that has been temporarily disabled for
		 * continually rejecting shares has started accepting shares.
		 * This will only happen with the work returned from a
		 * longpoll */
		if (unlikely(pool->enabled == POOL_REJECTING)) {
			applog(LOG_WARNING, "Rejecting pool %d now accepting shares, re-enabling!", pool->pool_no);
			enable_pool(pool);
			switch_pools(NULL);
		}

		if (unlikely(work->block)) {
			// Force moving on to this new block :)
			struct work fakework;
			memset(&fakework, 0, sizeof(fakework));
			fakework.pool = work->pool;

			// Copy block version, bits, and time from share
			memcpy(&fakework.data[ 0], &work->data[ 0], 4);
			memcpy(&fakework.data[68], &work->data[68], 8);

			// Set prevblock to winning hash (swap32'd)
			swap32yes(&fakework.data[4], &work->hash[0], 32 / 4);

			test_work_current(&fakework);
		}
	} else {
		mutex_lock(&stats_lock);
		cgpu->rejected++;
		total_rejected++;
		pool->rejected++;
		cgpu->diff_rejected += work->work_difficulty;
		total_diff_rejected += work->work_difficulty;
		pool->diff_rejected += work->work_difficulty;
		pool->seq_rejects++;
		mutex_unlock(&stats_lock);

		applog(LOG_DEBUG, "PROOF OF WORK RESULT: false (booooo)");
		if (!QUIET) {
			char where[20];
			char disposition[36] = "reject";
			char reason[32];

			strcpy(reason, "");
			if (total_pools > 1)
				snprintf(where, sizeof(where), "pool %d", work->pool->pool_no);
			else
				strcpy(where, "");

			if (!json_is_string(res))
				res = json_object_get(val, "reject-reason");
			if (res) {
				const char *reasontmp = json_string_value(res);

				size_t reasonLen = strlen(reasontmp);
				if (reasonLen > 28)
					reasonLen = 28;
				reason[0] = ' '; reason[1] = '(';
				memcpy(2 + reason, reasontmp, reasonLen);
				reason[reasonLen + 2] = ')'; reason[reasonLen + 3] = '\0';
				memcpy(disposition + 7, reasontmp, reasonLen);
				disposition[6] = ':'; disposition[reasonLen + 7] = '\0';
			} else if (work->stratum && err && json_is_array(err)) {
				json_t *reason_val = json_array_get(err, 1);
				char *reason_str;

				if (reason_val && json_is_string(reason_val)) {
					reason_str = (char *)json_string_value(reason_val);
					snprintf(reason, 31, " (%s)", reason_str);
				}
			}

			share_result_msg(work, "Rejected", reason, resubmit, worktime);
			sharelog(disposition, work);
		}

		/* Once we have more than a nominal amount of sequential rejects,
		 * at least 10 and more than 3 mins at the current utility,
		 * disable the pool because some pool error is likely to have
		 * ensued. Do not do this if we know the share just happened to
		 * be stale due to networking delays.
		 */
		if (pool->seq_rejects > 10 && !work->stale && opt_disable_pool && enabled_pools > 1) {
			double utility = total_accepted / total_secs * 60;

			if (pool->seq_rejects > utility * 3) {
				applog(LOG_WARNING, "Pool %d rejected %d sequential shares, disabling!",
				       pool->pool_no, pool->seq_rejects);
				reject_pool(pool);
				if (pool == current_pool())
					switch_pools(NULL);
				pool->seq_rejects = 0;
			}
		}
	}
	
	maybe_local_submit(work);
}

static char *submit_upstream_work_request(struct work *work)
{
	char *hexstr = NULL;
	char *s, *sd;
	struct pool *pool = work->pool;

	if (work->tr)
	{
		blktemplate_t * const tmpl = work->tr->tmpl;
		json_t *req;
		unsigned char data[80];
		
		swap32yes(data, work->data, 80 / 4);
#if BLKMAKER_VERSION > 3
		if (work->do_foreign_submit)
			req = blkmk_submit_foreign_jansson(tmpl, data, work->dataid, le32toh(*((uint32_t*)&work->data[76])));
		else
#endif
			req = blkmk_submit_jansson(tmpl, data, work->dataid, le32toh(*((uint32_t*)&work->data[76])));
		s = json_dumps(req, 0);
		json_decref(req);
		sd = malloc(161);
		bin2hex(sd, data, 80);
	} else {

	/* build hex string */
		hexstr = malloc((sizeof(work->data) * 2) + 1);
		bin2hex(hexstr, work->data, sizeof(work->data));

	/* build JSON-RPC request */
		s = strdup("{\"method\": \"getwork\", \"params\": [ \"");
		s = realloc_strcat(s, hexstr);
		s = realloc_strcat(s, "\" ], \"id\":1}");

		free(hexstr);
		sd = s;

	}

	applog(LOG_DEBUG, "DBG: sending %s submit RPC call: %s", pool->rpc_url, sd);
	if (work->tr)
		free(sd);
	else
		s = realloc_strcat(s, "\n");

	return s;
}

static bool submit_upstream_work_completed(struct work *work, bool resubmit, struct timeval *ptv_submit, json_t *val) {
	json_t *res, *err;
	bool rc = false;
	int thr_id = work->thr_id;
	struct pool *pool = work->pool;
	struct timeval tv_submit_reply;
	time_t ts_submit_reply;
	char worktime[200] = "";

	cgtime(&tv_submit_reply);
	ts_submit_reply = time(NULL);

	if (unlikely(!val)) {
		applog(LOG_INFO, "submit_upstream_work json_rpc_call failed");
		if (!pool_tset(pool, &pool->submit_fail)) {
			total_ro++;
			pool->remotefail_occasions++;
			applog(LOG_WARNING, "Pool %d communication failure, caching submissions", pool->pool_no);
		}
		goto out;
	} else if (pool_tclear(pool, &pool->submit_fail))
		applog(LOG_WARNING, "Pool %d communication resumed, submitting work", pool->pool_no);

	res = json_object_get(val, "result");
	err = json_object_get(val, "error");

	if (!QUIET) {
		if (opt_worktime) {
			char workclone[20];
			struct tm _tm;
			struct tm *tm, tm_getwork, tm_submit_reply;
			tm = &_tm;
			double getwork_time = tdiff((struct timeval *)&(work->tv_getwork_reply),
							(struct timeval *)&(work->tv_getwork));
			double getwork_to_work = tdiff((struct timeval *)&(work->tv_work_start),
							(struct timeval *)&(work->tv_getwork_reply));
			double work_time = tdiff((struct timeval *)&(work->tv_work_found),
							(struct timeval *)&(work->tv_work_start));
			double work_to_submit = tdiff(ptv_submit,
							(struct timeval *)&(work->tv_work_found));
			double submit_time = tdiff(&tv_submit_reply, ptv_submit);
			int diffplaces = 3;

			localtime_r(&work->ts_getwork, tm);
			memcpy(&tm_getwork, tm, sizeof(struct tm));
			localtime_r(&ts_submit_reply, tm);
			memcpy(&tm_submit_reply, tm, sizeof(struct tm));

			if (work->clone) {
				snprintf(workclone, sizeof(workclone), "C:%1.3f",
						tdiff((struct timeval *)&(work->tv_cloned),
						(struct timeval *)&(work->tv_getwork_reply)));
			}
			else
				strcpy(workclone, "O");

			if (work->work_difficulty < 1)
				diffplaces = 6;

			snprintf(worktime, sizeof(worktime),
				" <-%08lx.%08lx M:%c D:%1.*f G:%02d:%02d:%02d:%1.3f %s (%1.3f) W:%1.3f (%1.3f) S:%1.3f R:%02d:%02d:%02d",
				(unsigned long)be32toh(*(uint32_t *)&(work->data[opt_scrypt ? 32 : 28])),
				(unsigned long)be32toh(*(uint32_t *)&(work->data[opt_scrypt ? 28 : 24])),
				work->getwork_mode, diffplaces, work->work_difficulty,
				tm_getwork.tm_hour, tm_getwork.tm_min,
				tm_getwork.tm_sec, getwork_time, workclone,
				getwork_to_work, work_time, work_to_submit, submit_time,
				tm_submit_reply.tm_hour, tm_submit_reply.tm_min,
				tm_submit_reply.tm_sec);
		}
	}

	share_result(val, res, err, work, resubmit, worktime);

	if (!opt_realquiet)
		print_status(thr_id);
	if (!want_per_device_stats) {
		char logline[256];
		struct cgpu_info *cgpu;

		cgpu = get_thr_cgpu(thr_id);
		
		get_statline(logline, sizeof(logline), cgpu);
		applog(LOG_INFO, "%s", logline);
	}

	json_decref(val);

	rc = true;
out:
	return rc;
}

/* Specifies whether we can use this pool for work or not. */
static bool pool_unworkable(const struct pool * const pool)
{
	if (pool->idle)
		return true;
	if (pool->enabled != POOL_ENABLED)
		return true;
	if (pool->has_stratum && !pool->stratum_active)
		return true;
	return false;
}

static
bool pool_actively_desired(const struct pool * const pool, const struct pool *cp)
{
	if (pool->enabled != POOL_ENABLED)
		return false;
	if (pool_strategy == POOL_LOADBALANCE || pool_strategy == POOL_BALANCE)
		return true;
	if (!cp)
		cp = current_pool();
	return (pool == cp);
}

static
bool pool_actively_in_use(const struct pool * const pool, const struct pool *cp)
{
	return (!pool_unworkable(pool)) && pool_actively_desired(pool, cp);
}

/* In balanced mode, the amount of diff1 solutions per pool is monitored as a
 * rolling average per 10 minutes and if pools start getting more, it biases
 * away from them to distribute work evenly. The share count is reset to the
 * rolling average every 10 minutes to not send all work to one pool after it
 * has been disabled/out for an extended period. */
static struct pool *select_balanced(struct pool *cp)
{
	int i, lowest = cp->shares;
	struct pool *ret = cp;

	for (i = 0; i < total_pools; i++) {
		struct pool *pool = pools[i];

		if (pool_unworkable(pool))
			continue;
		if (pool->shares < lowest) {
			lowest = pool->shares;
			ret = pool;
		}
	}

	ret->shares++;
	return ret;
}

static bool pool_active(struct pool *, bool pinging);
static void pool_died(struct pool *);
static struct pool *priority_pool(int choice);
static bool pool_unusable(struct pool *pool);

/* Select any active pool in a rotating fashion when loadbalance is chosen if
 * it has any quota left. */
static inline struct pool *select_pool(bool lagging)
{
	static int rotating_pool = 0;
	struct pool *pool, *cp;
	bool avail = false;
	int tested, i;

	cp = current_pool();

retry:
	if (pool_strategy == POOL_BALANCE) {
		pool = select_balanced(cp);
		goto out;
	}

	if (pool_strategy != POOL_LOADBALANCE && (!lagging || opt_fail_only)) {
		pool = cp;
		goto out;
	} else
		pool = NULL;

	for (i = 0; i < total_pools; i++) {
		struct pool *tp = pools[i];

		if (tp->quota_used < tp->quota_gcd) {
			avail = true;
			break;
		}
	}

	/* There are no pools with quota, so reset them. */
	if (!avail) {
		for (i = 0; i < total_pools; i++)
			pools[i]->quota_used = 0;
		if (++rotating_pool >= total_pools)
			rotating_pool = 0;
	}

	/* Try to find the first pool in the rotation that is usable */
	tested = 0;
	while (!pool && tested++ < total_pools) {
		pool = pools[rotating_pool];
		if (pool->quota_used++ < pool->quota_gcd) {
			if (!pool_unworkable(pool))
				break;
			/* Failover-only flag for load-balance means distribute
			 * unused quota to priority pool 0. */
			if (opt_fail_only)
				priority_pool(0)->quota_used--;
		}
		pool = NULL;
		if (++rotating_pool >= total_pools)
			rotating_pool = 0;
	}

	/* If there are no alive pools with quota, choose according to
	 * priority. */
	if (!pool) {
		for (i = 0; i < total_pools; i++) {
			struct pool *tp = priority_pool(i);

			if (!pool_unusable(tp)) {
				pool = tp;
				break;
			}
		}
	}

	/* If still nothing is usable, use the current pool */
	if (!pool)
		pool = cp;

out:
	if (!pool_actively_in_use(pool, cp))
	{
		if (!pool_active(pool, false))
		{
			pool_died(pool);
			goto retry;
		}
		pool_tclear(pool, &pool->idle);
	}
	applog(LOG_DEBUG, "Selecting pool %d for work", pool->pool_no);
	return pool;
}

static double DIFFEXACTONE = 26959946667150639794667015087019630673637144422540572481103610249215.0;
static const uint64_t diffone = 0xFFFF000000000000ull;

static double target_diff(const unsigned char *target)
{
	double targ = 0;
	signed int i;

	for (i = 31; i >= 0; --i)
		targ = (targ * 0x100) + target[i];

	return DIFFEXACTONE / (targ ?: 1);
}

/*
 * Calculate the work share difficulty
 */
static void calc_diff(struct work *work, int known)
{
	struct cgminer_pool_stats *pool_stats = &(work->pool->cgminer_pool_stats);
	double difficulty;

	if (!known) {
		work->work_difficulty = target_diff(work->target);
	} else
		work->work_difficulty = known;
	difficulty = work->work_difficulty;

	pool_stats->last_diff = difficulty;
	suffix_string(difficulty, work->pool->diff, sizeof(work->pool->diff), 0);

	if (difficulty == pool_stats->min_diff)
		pool_stats->min_diff_count++;
	else if (difficulty < pool_stats->min_diff || pool_stats->min_diff == 0) {
		pool_stats->min_diff = difficulty;
		pool_stats->min_diff_count = 1;
	}

	if (difficulty == pool_stats->max_diff)
		pool_stats->max_diff_count++;
	else if (difficulty > pool_stats->max_diff) {
		pool_stats->max_diff = difficulty;
		pool_stats->max_diff_count = 1;
	}
}

static uint32_t benchmark_blkhdr[20];

static
void setup_benchmark_pool()
{
	struct pool *pool;
	
	want_longpoll = false;
	
	// Temporarily disable opt_benchmark to avoid auto-removal
	opt_benchmark = false;
	pool = add_pool();
	opt_benchmark = true;
	
	pool->rpc_url = malloc(255);
	strcpy(pool->rpc_url, "Benchmark");
	pool->rpc_user = pool->rpc_url;
	pool->rpc_pass = pool->rpc_url;
	enable_pool(pool);
	pool->idle = false;
	successful_connect = true;
	
	{
		uint32_t * const blkhdr = benchmark_blkhdr;
		blkhdr[2] = htobe32(1);
		blkhdr[17] = htobe32(0x7fffffff);  // timestamp
		blkhdr[18] = htobe32(0x1700ffff);  // "bits"
	}
	
	{
		struct stratum_work * const swork = &pool->swork;
		const int branchcount = 15;  // 1 MB block
		const size_t branchdatasz = branchcount * 0x20;
		const size_t coinbase_sz = 6 * 1024;
		
		bytes_resize(&swork->coinbase, coinbase_sz);
		memset(bytes_buf(&swork->coinbase), '\xff', coinbase_sz);
		swork->nonce2_offset = 0;
		
		bytes_resize(&swork->merkle_bin, branchdatasz);
		memset(bytes_buf(&swork->merkle_bin), '\xff', branchdatasz);
		swork->merkles = branchcount;
		
		memset(swork->header1, '\xff', 36);
		swork->ntime = 0x7fffffff;
		timer_unset(&swork->tv_received);
		memcpy(swork->diffbits, "\x17\0\xff\xff", 4);
		set_target_to_pdiff(swork->target, opt_scrypt ? (1./0x10000) : 1.);
		pool->nonce2sz = swork->n2size = GBT_XNONCESZ;
		pool->nonce2 = 0;
	}
}

void get_benchmark_work(struct work *work)
{
	struct pool * const pool = pools[0];
	uint32_t * const blkhdr = benchmark_blkhdr;
	for (int i = 16; i >= 0; --i)
		if (++blkhdr[i])
			break;
	
	memcpy(&work->data[ 0], blkhdr, 80);
	memcpy(&work->data[80], workpadding_bin, 48);
	calc_midstate(work);
	memcpy(work->target, pool->swork.target, sizeof(work->target));
	
	work->mandatory = true;
	work->pool = pools[0];
	cgtime(&work->tv_getwork);
	copy_time(&work->tv_getwork_reply, &work->tv_getwork);
	copy_time(&work->tv_staged, &work->tv_getwork);
	work->getwork_mode = GETWORK_MODE_BENCHMARK;
	calc_diff(work, 0);
	work_set_simple_ntime_roll_limit(work, 60, &work->tv_getwork);
}

static void wake_gws(void);

static void update_last_work(struct work *work)
{
	if (!work->tr)
		// Only save GBT jobs, since rollntime isn't coordinated well yet
		return;

	struct pool *pool = work->pool;
	mutex_lock(&pool->last_work_lock);
	if (pool->last_work_copy)
		free_work(pool->last_work_copy);
	pool->last_work_copy = copy_work(work);
	pool->last_work_copy->work_restart_id = pool->work_restart_id;
	mutex_unlock(&pool->last_work_lock);
}

static
void gbt_req_target(json_t *req)
{
	json_t *j;
	json_t *n;
	
	if (!request_target_str)
		return;
	
	j = json_object_get(req, "params");
	if (!j)
	{
		n = json_array();
		if (!n)
			return;
		if (json_object_set_new(req, "params", n))
			goto erradd;
		j = n;
	}
	
	n = json_array_get(j, 0);
	if (!n)
	{
		n = json_object();
		if (!n)
			return;
		if (json_array_append_new(j, n))
			goto erradd;
	}
	j = n;
	
	n = json_string(request_target_str);
	if (!n)
		return;
	if (json_object_set_new(j, "target", n))
		goto erradd;
	
	return;

erradd:
	json_decref(n);
}

static char *prepare_rpc_req2(struct work *work, enum pool_protocol proto, const char *lpid, bool probe)
{
	char *rpc_req;

	clean_work(work);
	switch (proto) {
		case PLP_GETWORK:
			work->getwork_mode = GETWORK_MODE_POOL;
			return strdup(getwork_req);
		case PLP_GETBLOCKTEMPLATE:
			work->getwork_mode = GETWORK_MODE_GBT;
			blktemplate_t * const tmpl = blktmpl_create();
			if (!tmpl)
				goto gbtfail2;
			work->tr = tmpl_makeref(tmpl);
			gbt_capabilities_t caps = blktmpl_addcaps(tmpl);
			if (!caps)
				goto gbtfail;
			caps |= GBT_LONGPOLL;
#if BLKMAKER_VERSION > 1
			if (opt_coinbase_script.sz)
				caps |= GBT_CBVALUE;
#endif
			json_t *req = blktmpl_request_jansson(caps, lpid);
			if (!req)
				goto gbtfail;
			
			if (probe)
				gbt_req_target(req);
			
			rpc_req = json_dumps(req, 0);
			if (!rpc_req)
				goto gbtfail;
			json_decref(req);
			return rpc_req;
		default:
			return NULL;
	}
	return NULL;

gbtfail:
	tmpl_decref(work->tr);
	work->tr = NULL;
gbtfail2:
	return NULL;
}

#define prepare_rpc_req(work, proto, lpid)  prepare_rpc_req2(work, proto, lpid, false)
#define prepare_rpc_req_probe(work, proto, lpid)  prepare_rpc_req2(work, proto, lpid, true)

static const char *pool_protocol_name(enum pool_protocol proto)
{
	switch (proto) {
		case PLP_GETBLOCKTEMPLATE:
			return "getblocktemplate";
		case PLP_GETWORK:
			return "getwork";
		default:
			return "UNKNOWN";
	}
}

static enum pool_protocol pool_protocol_fallback(enum pool_protocol proto)
{
	switch (proto) {
		case PLP_GETBLOCKTEMPLATE:
			if (want_getwork)
			return PLP_GETWORK;
		default:
			return PLP_NONE;
	}
}

static bool get_upstream_work(struct work *work, CURL *curl)
{
	struct pool *pool = work->pool;
	struct cgminer_pool_stats *pool_stats = &(pool->cgminer_pool_stats);
	struct timeval tv_elapsed;
	json_t *val = NULL;
	bool rc = false;
	char *url;
	enum pool_protocol proto;

	char *rpc_req;

	if (pool->proto == PLP_NONE)
		pool->proto = PLP_GETBLOCKTEMPLATE;

tryagain:
	rpc_req = prepare_rpc_req(work, pool->proto, NULL);
	work->pool = pool;
	if (!rpc_req)
		return false;

	applog(LOG_DEBUG, "DBG: sending %s get RPC call: %s", pool->rpc_url, rpc_req);

	url = pool->rpc_url;

	cgtime(&work->tv_getwork);

	val = json_rpc_call(curl, url, pool->rpc_userpass, rpc_req, false,
			    false, &work->rolltime, pool, false);
	pool_stats->getwork_attempts++;

	free(rpc_req);

	if (likely(val)) {
		rc = work_decode(pool, work, val);
		if (unlikely(!rc))
			applog(LOG_DEBUG, "Failed to decode work in get_upstream_work");
	} else if (PLP_NONE != (proto = pool_protocol_fallback(pool->proto))) {
		applog(LOG_WARNING, "Pool %u failed getblocktemplate request; falling back to getwork protocol", pool->pool_no);
		pool->proto = proto;
		goto tryagain;
	} else
		applog(LOG_DEBUG, "Failed json_rpc_call in get_upstream_work");

	cgtime(&work->tv_getwork_reply);
	timersub(&(work->tv_getwork_reply), &(work->tv_getwork), &tv_elapsed);
	pool_stats->getwork_wait_rolling += ((double)tv_elapsed.tv_sec + ((double)tv_elapsed.tv_usec / 1000000)) * 0.63;
	pool_stats->getwork_wait_rolling /= 1.63;

	timeradd(&tv_elapsed, &(pool_stats->getwork_wait), &(pool_stats->getwork_wait));
	if (timercmp(&tv_elapsed, &(pool_stats->getwork_wait_max), >)) {
		pool_stats->getwork_wait_max.tv_sec = tv_elapsed.tv_sec;
		pool_stats->getwork_wait_max.tv_usec = tv_elapsed.tv_usec;
	}
	if (timercmp(&tv_elapsed, &(pool_stats->getwork_wait_min), <)) {
		pool_stats->getwork_wait_min.tv_sec = tv_elapsed.tv_sec;
		pool_stats->getwork_wait_min.tv_usec = tv_elapsed.tv_usec;
	}
	pool_stats->getwork_calls++;

	work->pool = pool;
	work->longpoll = false;
	calc_diff(work, 0);
	total_getworks++;
	pool->getwork_requested++;

	if (rc)
		update_last_work(work);

	if (likely(val))
		json_decref(val);

	return rc;
}

#ifdef HAVE_CURSES
static void disable_curses(void)
{
	if (curses_active_locked()) {
		use_curses = false;
		curses_active = false;
		leaveok(logwin, false);
		leaveok(statuswin, false);
		leaveok(mainwin, false);
		nocbreak();
		echo();
		delwin(logwin);
		delwin(statuswin);
		delwin(mainwin);
		endwin();
#ifdef WIN32
		// Move the cursor to after curses output.
		HANDLE hout = GetStdHandle(STD_OUTPUT_HANDLE);
		CONSOLE_SCREEN_BUFFER_INFO csbi;
		COORD coord;

		if (GetConsoleScreenBufferInfo(hout, &csbi)) {
			coord.X = 0;
			coord.Y = csbi.dwSize.Y - 1;
			SetConsoleCursorPosition(hout, coord);
		}
#endif
		unlock_curses();
	}
}
#endif

static void __kill_work(void)
{
	struct cgpu_info *cgpu;
	struct thr_info *thr;
	int i;

	if (!successful_connect)
		return;

	applog(LOG_INFO, "Received kill message");

	shutting_down = true;

	applog(LOG_DEBUG, "Prompting submit_work thread to finish");
	notifier_wake(submit_waiting_notifier);

#ifdef USE_LIBMICROHTTPD
	httpsrv_stop();
#endif
	
	applog(LOG_DEBUG, "Killing off watchpool thread");
	/* Kill the watchpool thread */
	thr = &control_thr[watchpool_thr_id];
	thr_info_cancel(thr);

	applog(LOG_DEBUG, "Killing off watchdog thread");
	/* Kill the watchdog thread */
	thr = &control_thr[watchdog_thr_id];
	thr_info_cancel(thr);

	applog(LOG_DEBUG, "Shutting down mining threads");
	for (i = 0; i < mining_threads; i++) {
		thr = get_thread(i);
		if (!thr)
			continue;
		cgpu = thr->cgpu;
		if (!cgpu)
			continue;
		if (!cgpu->threads)
			continue;

		cgpu->shutdown = true;
		thr->work_restart = true;
		notifier_wake(thr->notifier);
		notifier_wake(thr->work_restart_notifier);
	}

	sleep(1);

	applog(LOG_DEBUG, "Killing off mining threads");
	/* Kill the mining threads*/
	for (i = 0; i < mining_threads; i++) {
		thr = get_thread(i);
		if (!thr)
			continue;
		cgpu = thr->cgpu;
		if (cgpu->threads)
		{
			applog(LOG_WARNING, "Killing %"PRIpreprv, thr->cgpu->proc_repr);
			thr_info_cancel(thr);
		}
		cgpu->status = LIFE_DEAD2;
	}

	/* Stop the others */
	applog(LOG_DEBUG, "Killing off API thread");
	thr = &control_thr[api_thr_id];
	thr_info_cancel(thr);
}

/* This should be the common exit path */
void kill_work(void)
{
	__kill_work();

	quit(0, "Shutdown signal received.");
}

static
#ifdef WIN32
#ifndef _WIN64
const
#endif
#endif
char **initial_args;

void _bfg_clean_up(bool);

void app_restart(void)
{
	applog(LOG_WARNING, "Attempting to restart %s", packagename);

	__kill_work();
	_bfg_clean_up(true);

#if defined(unix) || defined(__APPLE__)
	if (forkpid > 0) {
		kill(forkpid, SIGTERM);
		forkpid = 0;
	}
#endif

	execv(initial_args[0], initial_args);
	applog(LOG_WARNING, "Failed to restart application");
}

static void sighandler(int __maybe_unused sig)
{
	/* Restore signal handlers so we can still quit if kill_work fails */
	sigaction(SIGTERM, &termhandler, NULL);
	sigaction(SIGINT, &inthandler, NULL);
	kill_work();
}

static void start_longpoll(void);
static void stop_longpoll(void);

/* Called with pool_lock held. Recruit an extra curl if none are available for
 * this pool. */
static void recruit_curl(struct pool *pool)
{
	struct curl_ent *ce = calloc(sizeof(struct curl_ent), 1);

	if (unlikely(!ce))
		quit(1, "Failed to calloc in recruit_curl");

	ce->curl = curl_easy_init();
	if (unlikely(!ce->curl))
		quit(1, "Failed to init in recruit_curl");

	LL_PREPEND(pool->curllist, ce);
	pool->curls++;
}

/* Grab an available curl if there is one. If not, then recruit extra curls
 * unless we are in a submit_fail situation, or we have opt_delaynet enabled
 * and there are already 5 curls in circulation. Limit total number to the
 * number of mining threads per pool as well to prevent blasting a pool during
 * network delays/outages. */
static struct curl_ent *pop_curl_entry3(struct pool *pool, int blocking)
{
	int curl_limit = opt_delaynet ? 5 : (mining_threads + opt_queue) * 2;
	bool recruited = false;
	struct curl_ent *ce;

	mutex_lock(&pool->pool_lock);
retry:
	if (!pool->curls) {
		recruit_curl(pool);
		recruited = true;
	} else if (!pool->curllist) {
		if (blocking < 2 && pool->curls >= curl_limit && (blocking || pool->curls >= opt_submit_threads)) {
			if (!blocking) {
				mutex_unlock(&pool->pool_lock);
				return NULL;
			}
			pthread_cond_wait(&pool->cr_cond, &pool->pool_lock);
			goto retry;
		} else {
			recruit_curl(pool);
			recruited = true;
		}
	}
	ce = pool->curllist;
	LL_DELETE(pool->curllist, ce);
	mutex_unlock(&pool->pool_lock);

	if (recruited)
		applog(LOG_DEBUG, "Recruited curl for pool %d", pool->pool_no);
	return ce;
}

static struct curl_ent *pop_curl_entry2(struct pool *pool, bool blocking)
{
	return pop_curl_entry3(pool, blocking ? 1 : 0);
}

__maybe_unused
static struct curl_ent *pop_curl_entry(struct pool *pool)
{
	return pop_curl_entry3(pool, 1);
}

static void push_curl_entry(struct curl_ent *ce, struct pool *pool)
{
	mutex_lock(&pool->pool_lock);
	if (!ce || !ce->curl)
		quithere(1, "Attempted to add NULL");
	LL_PREPEND(pool->curllist, ce);
	cgtime(&ce->tv);
	pthread_cond_broadcast(&pool->cr_cond);
	mutex_unlock(&pool->pool_lock);
}

bool stale_work(struct work *work, bool share);

static inline bool should_roll(struct work *work)
{
	struct timeval now;
	time_t expiry;

	if (!pool_actively_in_use(work->pool, NULL))
		return false;

	if (stale_work(work, false))
		return false;

	if (work->rolltime > opt_scantime)
		expiry = work->rolltime;
	else
		expiry = opt_scantime;
	expiry = expiry * 2 / 3;

	/* We shouldn't roll if we're unlikely to get one shares' duration
	 * work out of doing so */
	cgtime(&now);
	if (now.tv_sec - work->tv_staged.tv_sec > expiry)
		return false;
	
	return true;
}

/* Limit rolls to 7000 to not beyond 2 hours in the future where bitcoind will
 * reject blocks as invalid. */
static inline bool can_roll(struct work *work)
{
	if (work->stratum)
		return false;
	if (!(work->pool && !work->clone))
		return false;
	if (work->tr)
	{
		if (stale_work(work, false))
			return false;
		return blkmk_work_left(work->tr->tmpl);
	}
	return (work->rolltime &&
		work->rolls < 7000 && !stale_work(work, false));
}

static void roll_work(struct work *work)
{
	if (work->tr)
	{
		struct timeval tv_now;
		cgtime(&tv_now);
		if (blkmk_get_data(work->tr->tmpl, work->data, 80, tv_now.tv_sec, NULL, &work->dataid) < 76)
			applog(LOG_ERR, "Failed to get next data from template; spinning wheels!");
		swap32yes(work->data, work->data, 80 / 4);
		calc_midstate(work);
		applog(LOG_DEBUG, "Successfully rolled extranonce to dataid %u", work->dataid);
	} else {

	uint32_t *work_ntime;
	uint32_t ntime;

	work_ntime = (uint32_t *)(work->data + 68);
	ntime = be32toh(*work_ntime);
	ntime++;
	*work_ntime = htobe32(ntime);
		work_set_simple_ntime_roll_limit(work, 0, &work->ntime_roll_limits.tv_ref);

		applog(LOG_DEBUG, "Successfully rolled time header in work");
	}

	local_work++;
	work->rolls++;
	work->blk.nonce = 0;

	/* This is now a different work item so it needs a different ID for the
	 * hashtable */
	work->id = total_work++;
}

/* Duplicates any dynamically allocated arrays within the work struct to
 * prevent a copied work struct from freeing ram belonging to another struct */
static void _copy_work(struct work *work, const struct work *base_work, int noffset)
{
	int id = work->id;

	clean_work(work);
	memcpy(work, base_work, sizeof(struct work));
	/* Keep the unique new id assigned during make_work to prevent copied
	 * work from having the same id. */
	work->id = id;
	if (base_work->job_id)
		work->job_id = strdup(base_work->job_id);
	if (base_work->nonce1)
		work->nonce1 = strdup(base_work->nonce1);
	bytes_cpy(&work->nonce2, &base_work->nonce2);

	if (base_work->tr)
		tmpl_incref(base_work->tr);
	
	if (noffset)
	{
		uint32_t *work_ntime = (uint32_t *)(work->data + 68);
		uint32_t ntime = be32toh(*work_ntime);

		ntime += noffset;
		*work_ntime = htobe32(ntime);
	}
	
	if (work->device_data_dup_func)
		work->device_data = work->device_data_dup_func(work);
}

/* Generates a copy of an existing work struct, creating fresh heap allocations
 * for all dynamically allocated arrays within the struct */
struct work *copy_work(const struct work *base_work)
{
	struct work *work = make_work();

	_copy_work(work, base_work, 0);

	return work;
}

void __copy_work(struct work *work, const struct work *base_work)
{
	_copy_work(work, base_work, 0);
}

static struct work *make_clone(struct work *work)
{
	struct work *work_clone = copy_work(work);

	work_clone->clone = true;
	cgtime((struct timeval *)&(work_clone->tv_cloned));
	work_clone->longpoll = false;
	work_clone->mandatory = false;
	/* Make cloned work appear slightly older to bias towards keeping the
	 * master work item which can be further rolled */
	work_clone->tv_staged.tv_sec -= 1;

	return work_clone;
}

static void stage_work(struct work *work);

static bool clone_available(void)
{
	struct work *work_clone = NULL, *work, *tmp;
	bool cloned = false;

	mutex_lock(stgd_lock);
	if (!staged_rollable)
		goto out_unlock;

	HASH_ITER(hh, staged_work, work, tmp) {
		if (can_roll(work) && should_roll(work)) {
			roll_work(work);
			work_clone = make_clone(work);
			applog(LOG_DEBUG, "%s: Rolling work %d to %d", __func__, work->id, work_clone->id);
			roll_work(work);
			cloned = true;
			break;
		}
	}

out_unlock:
	mutex_unlock(stgd_lock);

	if (cloned) {
		applog(LOG_DEBUG, "Pushing cloned available work to stage thread");
		stage_work(work_clone);
	}
	return cloned;
}

static void pool_died(struct pool *pool)
{
	if (!pool_tset(pool, &pool->idle)) {
		cgtime(&pool->tv_idle);
		if (pool == current_pool()) {
			applog(LOG_WARNING, "Pool %d %s not responding!", pool->pool_no, pool->rpc_url);
			switch_pools(NULL);
		} else
			applog(LOG_INFO, "Pool %d %s failed to return work", pool->pool_no, pool->rpc_url);
	}
}

bool stale_work(struct work *work, bool share)
{
	unsigned work_expiry;
	struct pool *pool;
	uint32_t block_id;
	unsigned getwork_delay;

	if (opt_benchmark)
		return false;

	block_id = ((uint32_t*)work->data)[1];
	pool = work->pool;

	/* Technically the rolltime should be correct but some pools
	 * advertise a broken expire= that is lower than a meaningful
	 * scantime */
	if (work->rolltime >= opt_scantime || work->tr)
		work_expiry = work->rolltime;
	else
		work_expiry = opt_expiry;

	unsigned max_expiry = (have_longpoll ? opt_expiry_lp : opt_expiry);
	if (work_expiry > max_expiry)
		work_expiry = max_expiry;

	if (share) {
		/* If the share isn't on this pool's latest block, it's stale */
		if (pool->block_id && pool->block_id != block_id)
		{
			applog(LOG_DEBUG, "Share stale due to block mismatch (%08lx != %08lx)", (long)block_id, (long)pool->block_id);
			return true;
		}

		/* If the pool doesn't want old shares, then any found in work before
		 * the most recent longpoll is stale */
		if ((!pool->submit_old) && work->work_restart_id != pool->work_restart_id)
		{
			applog(LOG_DEBUG, "Share stale due to mandatory work update (%02x != %02x)", work->work_restart_id, pool->work_restart_id);
			return true;
		}
	} else {
		/* If this work isn't for the latest Bitcoin block, it's stale */
		/* But only care about the current pool if failover-only */
		if (enabled_pools <= 1 || opt_fail_only) {
			if (pool->block_id && block_id != pool->block_id)
			{
				applog(LOG_DEBUG, "Work stale due to block mismatch (%08lx != 1 ? %08lx : %08lx)", (long)block_id, (long)pool->block_id, (long)current_block_id);
				return true;
			}
		} else {
			if (block_id != current_block_id)
			{
				applog(LOG_DEBUG, "Work stale due to block mismatch (%08lx != 0 ? %08lx : %08lx)", (long)block_id, (long)pool->block_id, (long)current_block_id);
				return true;
			}
		}

		/* If the pool has asked us to restart since this work, it's stale */
		if (work->work_restart_id != pool->work_restart_id)
		{
			applog(LOG_DEBUG, "Work stale due to work update (%02x != %02x)", work->work_restart_id, pool->work_restart_id);
			return true;
		}

	if (pool->has_stratum && work->job_id) {
		bool same_job;

		if (!pool->stratum_active || !pool->stratum_notify) {
			applog(LOG_DEBUG, "Work stale due to stratum inactive");
			return true;
		}

		same_job = true;

		cg_rlock(&pool->data_lock);
		if (strcmp(work->job_id, pool->swork.job_id))
			same_job = false;
		cg_runlock(&pool->data_lock);

		if (!same_job) {
			applog(LOG_DEBUG, "Work stale due to stratum job_id mismatch");
			return true;
		}
	}

	/* Factor in the average getwork delay of this pool, rounding it up to
	 * the nearest second */
	getwork_delay = pool->cgminer_pool_stats.getwork_wait_rolling * 5 + 1;
	if (unlikely(work_expiry <= getwork_delay + 5))
		work_expiry = 5;
	else
		work_expiry -= getwork_delay;

	}

	int elapsed_since_staged = timer_elapsed(&work->tv_staged, NULL);
	if (elapsed_since_staged > work_expiry) {
		applog(LOG_DEBUG, "%s stale due to expiry (%d >= %u)", share?"Share":"Work", elapsed_since_staged, work_expiry);
		return true;
	}

	/* If the user only wants strict failover, any work from a pool other than
	 * the current one is always considered stale */
	if (opt_fail_only && !share && !work->mandatory && !pool_actively_in_use(pool, NULL))
	{
		applog(LOG_DEBUG, "Work stale due to fail only pool mismatch (pool %u vs %u)", pool->pool_no, current_pool()->pool_no);
		return true;
	}

	return false;
}

static double share_diff(const struct work *work)
{
	double ret;
	bool new_best = false;

	ret = target_diff(work->hash);

	cg_wlock(&control_lock);
	if (unlikely(ret > best_diff)) {
		new_best = true;
		best_diff = ret;
		suffix_string(best_diff, best_share, sizeof(best_share), 0);
	}
	if (unlikely(ret > work->pool->best_diff))
		work->pool->best_diff = ret;
	cg_wunlock(&control_lock);

	if (unlikely(new_best))
		applog(LOG_INFO, "New best share: %s", best_share);

	return ret;
}

static void regen_hash(struct work *work)
{
	hash_data(work->hash, work->data);
}

static void rebuild_hash(struct work *work)
{
	if (opt_scrypt)
		scrypt_regenhash(work);
	else
		regen_hash(work);

	work->share_diff = share_diff(work);
	if (unlikely(work->share_diff >= current_diff)) {
		work->block = true;
		work->pool->solved++;
		found_blocks++;
		work->mandatory = true;
		applog(LOG_NOTICE, "Found block for pool %d!", work->pool->pool_no);
	}
}

static void submit_discard_share2(const char *reason, struct work *work)
{
	struct cgpu_info *cgpu = get_thr_cgpu(work->thr_id);

	sharelog(reason, work);

	mutex_lock(&stats_lock);
	++total_stale;
	++cgpu->stale;
	++(work->pool->stale_shares);
	total_diff_stale += work->work_difficulty;
	cgpu->diff_stale += work->work_difficulty;
	work->pool->diff_stale += work->work_difficulty;
	mutex_unlock(&stats_lock);
}

static void submit_discard_share(struct work *work)
{
	submit_discard_share2("discard", work);
}

struct submit_work_state {
	struct work *work;
	bool resubmit;
	struct curl_ent *ce;
	int failures;
	struct timeval tv_staleexpire;
	char *s;
	struct timeval tv_submit;
	struct submit_work_state *next;
};

static int my_curl_timer_set(__maybe_unused CURLM *curlm, long timeout_ms, void *userp)
{
	long *p_timeout_us = userp;
	
	const long max_ms = LONG_MAX / 1000;
	if (max_ms < timeout_ms)
		timeout_ms = max_ms;
	
	*p_timeout_us = timeout_ms * 1000;
	return 0;
}

static void sws_has_ce(struct submit_work_state *sws)
{
	struct pool *pool = sws->work->pool;
	sws->s = submit_upstream_work_request(sws->work);
	cgtime(&sws->tv_submit);
	json_rpc_call_async(sws->ce->curl, pool->rpc_url, pool->rpc_userpass, sws->s, false, pool, true, sws);
}

static struct submit_work_state *begin_submission(struct work *work)
{
	struct pool *pool;
	struct submit_work_state *sws = NULL;

	pool = work->pool;
	sws = malloc(sizeof(*sws));
	*sws = (struct submit_work_state){
		.work = work,
	};

	rebuild_hash(work);

	if (stale_work(work, true)) {
		work->stale = true;
		if (opt_submit_stale)
			applog(LOG_NOTICE, "Pool %d stale share detected, submitting as user requested", pool->pool_no);
		else if (pool->submit_old)
			applog(LOG_NOTICE, "Pool %d stale share detected, submitting as pool requested", pool->pool_no);
		else {
			applog(LOG_NOTICE, "Pool %d stale share detected, discarding", pool->pool_no);
			submit_discard_share(work);
			goto out;
		}
		timer_set_delay_from_now(&sws->tv_staleexpire, 300000000);
	}

	if (work->stratum) {
		char *s;

		s = malloc(1024);

		sws->s = s;
	} else {
		/* submit solution to bitcoin via JSON-RPC */
		sws->ce = pop_curl_entry2(pool, false);
		if (sws->ce) {
			sws_has_ce(sws);
		} else {
			sws->next = pool->sws_waiting_on_curl;
			pool->sws_waiting_on_curl = sws;
			if (sws->next)
				applog(LOG_DEBUG, "submit_thread queuing submission");
			else
				applog(LOG_WARNING, "submit_thread queuing submissions (see --submit-threads)");
		}
	}

	return sws;

out:
	free(sws);
	return NULL;
}

static bool retry_submission(struct submit_work_state *sws)
{
	struct work *work = sws->work;
	struct pool *pool = work->pool;

		sws->resubmit = true;
		if ((!work->stale) && stale_work(work, true)) {
			work->stale = true;
			if (opt_submit_stale)
				applog(LOG_NOTICE, "Pool %d share became stale during submission failure, will retry as user requested", pool->pool_no);
			else if (pool->submit_old)
				applog(LOG_NOTICE, "Pool %d share became stale during submission failure, will retry as pool requested", pool->pool_no);
			else {
				applog(LOG_NOTICE, "Pool %d share became stale during submission failure, discarding", pool->pool_no);
				submit_discard_share(work);
				return false;
			}
			timer_set_delay_from_now(&sws->tv_staleexpire, 300000000);
		}
		if (unlikely((opt_retries >= 0) && (++sws->failures > opt_retries))) {
			applog(LOG_ERR, "Pool %d failed %d submission retries, discarding", pool->pool_no, opt_retries);
			submit_discard_share(work);
			return false;
		}
		else if (work->stale) {
			if (unlikely(opt_retries < 0 && timer_passed(&sws->tv_staleexpire, NULL)))
			{
				applog(LOG_NOTICE, "Pool %d stale share failed to submit for 5 minutes, discarding", pool->pool_no);
				submit_discard_share(work);
				return false;
			}
		}

		/* pause, then restart work-request loop */
		applog(LOG_INFO, "json_rpc_call failed on submit_work, retrying");

		cgtime(&sws->tv_submit);
		json_rpc_call_async(sws->ce->curl, pool->rpc_url, pool->rpc_userpass, sws->s, false, pool, true, sws);
	
	return true;
}

static void free_sws(struct submit_work_state *sws)
{
	free(sws->s);
	free_work(sws->work);
	free(sws);
}

static void *submit_work_thread(__maybe_unused void *userdata)
{
	int wip = 0;
	CURLM *curlm;
	long curlm_timeout_us = -1;
	struct timeval curlm_timer;
	struct submit_work_state *sws, **swsp;
	struct submit_work_state *write_sws = NULL;
	unsigned tsreduce = 0;

	pthread_detach(pthread_self());

	RenameThread("submit_work");

	applog(LOG_DEBUG, "Creating extra submit work thread");

	curlm = curl_multi_init();
	curlm_timeout_us = -1;
	curl_multi_setopt(curlm, CURLMOPT_TIMERDATA, &curlm_timeout_us);
	curl_multi_setopt(curlm, CURLMOPT_TIMERFUNCTION, my_curl_timer_set);

	fd_set rfds, wfds, efds;
	int maxfd;
	struct timeval tv_timeout, tv_now;
	int n;
	CURLMsg *cm;
	FD_ZERO(&rfds);
	while (1) {
		mutex_lock(&submitting_lock);
		total_submitting -= tsreduce;
		tsreduce = 0;
		if (FD_ISSET(submit_waiting_notifier[0], &rfds)) {
			notifier_read(submit_waiting_notifier);
		}
		
		// Receive any new submissions
		while (submit_waiting) {
			struct work *work = submit_waiting;
			DL_DELETE(submit_waiting, work);
			if ( (sws = begin_submission(work)) ) {
				if (sws->ce)
					curl_multi_add_handle(curlm, sws->ce->curl);
				else if (sws->s) {
					sws->next = write_sws;
					write_sws = sws;
				}
				++wip;
			}
			else {
				--total_submitting;
				free_work(work);
			}
		}
		
		if (unlikely(shutting_down && !wip))
			break;
		mutex_unlock(&submitting_lock);
		
		FD_ZERO(&rfds);
		FD_ZERO(&wfds);
		FD_ZERO(&efds);
		tv_timeout.tv_sec = -1;
		
		// Setup cURL with select
		// Need to call perform to ensure the timeout gets updated
		curl_multi_perform(curlm, &n);
		curl_multi_fdset(curlm, &rfds, &wfds, &efds, &maxfd);
		if (curlm_timeout_us >= 0)
		{
			timer_set_delay_from_now(&curlm_timer, curlm_timeout_us);
			reduce_timeout_to(&tv_timeout, &curlm_timer);
		}
		
		// Setup waiting stratum submissions with select
		for (sws = write_sws; sws; sws = sws->next)
		{
			struct pool *pool = sws->work->pool;
			int fd = pool->sock;
			if (fd == INVSOCK || (!pool->stratum_init) || !pool->stratum_notify)
				continue;
			FD_SET(fd, &wfds);
			set_maxfd(&maxfd, fd);
		}
		
		// Setup "submit waiting" notifier with select
		FD_SET(submit_waiting_notifier[0], &rfds);
		set_maxfd(&maxfd, submit_waiting_notifier[0]);
		
		// Wait for something interesting to happen :)
		cgtime(&tv_now);
		if (select(maxfd+1, &rfds, &wfds, &efds, select_timeout(&tv_timeout, &tv_now)) < 0) {
			FD_ZERO(&rfds);
			continue;
		}
		
		// Handle any stratum ready-to-write results
		for (swsp = &write_sws; (sws = *swsp); ) {
			struct work *work = sws->work;
			struct pool *pool = work->pool;
			int fd = pool->sock;
			bool sessionid_match;
			
			if (fd == INVSOCK || (!pool->stratum_init) || (!pool->stratum_notify) || !FD_ISSET(fd, &wfds)) {
next_write_sws:
				// TODO: Check if stale, possibly discard etc
				swsp = &sws->next;
				continue;
			}
			
			cg_rlock(&pool->data_lock);
			// NOTE: cgminer only does this check on retries, but BFGMiner does it for even the first/normal submit; therefore, it needs to be such that it always is true on the same connection regardless of session management
			// NOTE: Worst case scenario for a false positive: the pool rejects it as H-not-zero
			sessionid_match = (!pool->swork.nonce1) || !strcmp(work->nonce1, pool->swork.nonce1);
			cg_runlock(&pool->data_lock);
			if (!sessionid_match)
			{
				applog(LOG_DEBUG, "No matching session id for resubmitting stratum share");
				submit_discard_share2("disconnect", work);
				++tsreduce;
next_write_sws_del:
				// Clear the fd from wfds, to avoid potentially blocking on other submissions to the same socket
				FD_CLR(fd, &wfds);
				// Delete sws for this submission, since we're done with it
				*swsp = sws->next;
				free_sws(sws);
				--wip;
				continue;
			}
			
			char *s = sws->s;
			struct stratum_share *sshare = calloc(sizeof(struct stratum_share), 1);
			int sshare_id;
			uint32_t nonce;
			char nonce2hex[(bytes_len(&work->nonce2) * 2) + 1];
			char noncehex[9];
			char ntimehex[9];
			
			sshare->work = copy_work(work);
			bin2hex(nonce2hex, bytes_buf(&work->nonce2), bytes_len(&work->nonce2));
			nonce = *((uint32_t *)(work->data + 76));
			bin2hex(noncehex, (const unsigned char *)&nonce, 4);
			bin2hex(ntimehex, (void *)&work->data[68], 4);
			
			mutex_lock(&sshare_lock);
			/* Give the stratum share a unique id */
			sshare_id =
			sshare->id = swork_id++;
			HASH_ADD_INT(stratum_shares, id, sshare);
			snprintf(s, 1024, "{\"params\": [\"%s\", \"%s\", \"%s\", \"%s\", \"%s\"], \"id\": %d, \"method\": \"mining.submit\"}",
				pool->rpc_user, work->job_id, nonce2hex, ntimehex, noncehex, sshare->id);
			mutex_unlock(&sshare_lock);
			
			applog(LOG_DEBUG, "DBG: sending %s submit RPC call: %s", pool->stratum_url, s);

			if (likely(stratum_send(pool, s, strlen(s)))) {
				if (pool_tclear(pool, &pool->submit_fail))
					applog(LOG_WARNING, "Pool %d communication resumed, submitting work", pool->pool_no);
				applog(LOG_DEBUG, "Successfully submitted, adding to stratum_shares db");
				goto next_write_sws_del;
			} else if (!pool_tset(pool, &pool->submit_fail)) {
				// Undo stuff
				mutex_lock(&sshare_lock);
				// NOTE: Need to find it again in case something else has consumed it already (like the stratum-disconnect resubmitter...)
				HASH_FIND_INT(stratum_shares, &sshare_id, sshare);
				if (sshare)
					HASH_DEL(stratum_shares, sshare);
				mutex_unlock(&sshare_lock);
				if (sshare)
				{
					free_work(sshare->work);
					free(sshare);
				}
				
				applog(LOG_WARNING, "Pool %d stratum share submission failure", pool->pool_no);
				total_ro++;
				pool->remotefail_occasions++;
				
				if (!sshare)
					goto next_write_sws_del;
				
				goto next_write_sws;
			}
		}
		
		// Handle any cURL activities
		curl_multi_perform(curlm, &n);
		while( (cm = curl_multi_info_read(curlm, &n)) ) {
			if (cm->msg == CURLMSG_DONE)
			{
				bool finished;
				json_t *val = json_rpc_call_completed(cm->easy_handle, cm->data.result, false, NULL, &sws);
				curl_multi_remove_handle(curlm, cm->easy_handle);
				finished = submit_upstream_work_completed(sws->work, sws->resubmit, &sws->tv_submit, val);
				if (!finished) {
					if (retry_submission(sws))
						curl_multi_add_handle(curlm, sws->ce->curl);
					else
						finished = true;
				}
				
				if (finished) {
					--wip;
					++tsreduce;
					struct pool *pool = sws->work->pool;
					if (pool->sws_waiting_on_curl) {
						pool->sws_waiting_on_curl->ce = sws->ce;
						sws_has_ce(pool->sws_waiting_on_curl);
						pool->sws_waiting_on_curl = pool->sws_waiting_on_curl->next;
						curl_multi_add_handle(curlm, sws->ce->curl);
					} else {
						push_curl_entry(sws->ce, sws->work->pool);
					}
					free_sws(sws);
				}
			}
		}
	}
	assert(!write_sws);
	mutex_unlock(&submitting_lock);

	curl_multi_cleanup(curlm);

	applog(LOG_DEBUG, "submit_work thread exiting");

	return NULL;
}

/* Find the pool that currently has the highest priority */
static struct pool *priority_pool(int choice)
{
	struct pool *ret = NULL;
	int i;

	for (i = 0; i < total_pools; i++) {
		struct pool *pool = pools[i];

		if (pool->prio == choice) {
			ret = pool;
			break;
		}
	}

	if (unlikely(!ret)) {
		applog(LOG_ERR, "WTF No pool %d found!", choice);
		return pools[choice];
	}
	return ret;
}

int prioritize_pools(char *param, int *pid)
{
	char *ptr, *next;
	int i, pr, prio = 0;

	if (total_pools == 0) {
		return MSG_NOPOOL;
	}

	if (param == NULL || *param == '\0') {
		return MSG_MISPID;
	}

	bool pools_changed[total_pools];
	int new_prio[total_pools];
	for (i = 0; i < total_pools; ++i)
		pools_changed[i] = false;

	next = param;
	while (next && *next) {
		ptr = next;
		next = strchr(ptr, ',');
		if (next)
			*(next++) = '\0';

		i = atoi(ptr);
		if (i < 0 || i >= total_pools) {
			*pid = i;
			return MSG_INVPID;
		}

		if (pools_changed[i]) {
			*pid = i;
			return MSG_DUPPID;
		}

		pools_changed[i] = true;
		new_prio[i] = prio++;
	}

	// Only change them if no errors
	for (i = 0; i < total_pools; i++) {
		if (pools_changed[i])
			pools[i]->prio = new_prio[i];
	}

	// In priority order, cycle through the unchanged pools and append them
	for (pr = 0; pr < total_pools; pr++)
		for (i = 0; i < total_pools; i++) {
			if (!pools_changed[i] && pools[i]->prio == pr) {
				pools[i]->prio = prio++;
				pools_changed[i] = true;
				break;
			}
		}

	if (current_pool()->prio)
		switch_pools(NULL);

	return MSG_POOLPRIO;
}

void validate_pool_priorities(void)
{
	// TODO: this should probably do some sort of logging
	int i, j;
	bool used[total_pools];
	bool valid[total_pools];

	for (i = 0; i < total_pools; i++)
		used[i] = valid[i] = false;

	for (i = 0; i < total_pools; i++) {
		if (pools[i]->prio >=0 && pools[i]->prio < total_pools) {
			if (!used[pools[i]->prio]) {
				valid[i] = true;
				used[pools[i]->prio] = true;
			}
		}
	}

	for (i = 0; i < total_pools; i++) {
		if (!valid[i]) {
			for (j = 0; j < total_pools; j++) {
				if (!used[j]) {
					applog(LOG_WARNING, "Pool %d priority changed from %d to %d", i, pools[i]->prio, j);
					pools[i]->prio = j;
					used[j] = true;
					break;
				}
			}
		}
	}
}

static void clear_pool_work(struct pool *pool);

/* Specifies whether we can switch to this pool or not. */
static bool pool_unusable(struct pool *pool)
{
	if (pool->idle)
		return true;
	if (pool->enabled != POOL_ENABLED)
		return true;
	return false;
}

void switch_pools(struct pool *selected)
{
	struct pool *pool, *last_pool;
	int i, pool_no, next_pool;

	cg_wlock(&control_lock);
	last_pool = currentpool;
	pool_no = currentpool->pool_no;

	/* Switch selected to pool number 0 and move the rest down */
	if (selected) {
		if (selected->prio != 0) {
			for (i = 0; i < total_pools; i++) {
				pool = pools[i];
				if (pool->prio < selected->prio)
					pool->prio++;
			}
			selected->prio = 0;
		}
	}

	switch (pool_strategy) {
		/* All of these set to the master pool */
		case POOL_BALANCE:
		case POOL_FAILOVER:
		case POOL_LOADBALANCE:
			for (i = 0; i < total_pools; i++) {
				pool = priority_pool(i);
				if (pool_unusable(pool))
					continue;
				pool_no = pool->pool_no;
				break;
			}
			break;
		/* Both of these simply increment and cycle */
		case POOL_ROUNDROBIN:
		case POOL_ROTATE:
			if (selected && !selected->idle) {
				pool_no = selected->pool_no;
				break;
			}
			next_pool = pool_no;
			/* Select the next alive pool */
			for (i = 1; i < total_pools; i++) {
				next_pool++;
				if (next_pool >= total_pools)
					next_pool = 0;
				pool = pools[next_pool];
				if (pool_unusable(pool))
					continue;
				pool_no = next_pool;
				break;
			}
			break;
		default:
			break;
	}

	currentpool = pools[pool_no];
	pool = currentpool;
	cg_wunlock(&control_lock);

	/* Set the lagging flag to avoid pool not providing work fast enough
	 * messages in failover only mode since  we have to get all fresh work
	 * as in restart_threads */
	if (opt_fail_only)
		pool_tset(pool, &pool->lagging);

	if (pool != last_pool)
	{
		pool->block_id = 0;
		if (pool_strategy != POOL_LOADBALANCE && pool_strategy != POOL_BALANCE) {
			applog(LOG_WARNING, "Switching to pool %d %s", pool->pool_no, pool->rpc_url);
			if (pool_localgen(pool) || opt_fail_only)
				clear_pool_work(last_pool);
		}
	}

	mutex_lock(&lp_lock);
	pthread_cond_broadcast(&lp_cond);
	mutex_unlock(&lp_lock);

}

static void discard_work(struct work *work)
{
	if (!work->clone && !work->rolls && !work->mined) {
		if (work->pool) {
			work->pool->discarded_work++;
			work->pool->quota_used--;
			work->pool->works--;
		}
		total_discarded++;
		applog(LOG_DEBUG, "Discarded work");
	} else
		applog(LOG_DEBUG, "Discarded cloned or rolled work");
	free_work(work);
}

static void wake_gws(void)
{
	mutex_lock(stgd_lock);
	pthread_cond_signal(&gws_cond);
	mutex_unlock(stgd_lock);
}

static void discard_stale(void)
{
	struct work *work, *tmp;
	int stale = 0;

	mutex_lock(stgd_lock);
	HASH_ITER(hh, staged_work, work, tmp) {
		if (stale_work(work, false)) {
			HASH_DEL(staged_work, work);
			discard_work(work);
			stale++;
			staged_full = false;
		}
	}
	pthread_cond_signal(&gws_cond);
	mutex_unlock(stgd_lock);

	if (stale)
		applog(LOG_DEBUG, "Discarded %d stales that didn't match current hash", stale);
}

bool stale_work_future(struct work *work, bool share, unsigned long ustime)
{
	bool rv;
	struct timeval tv, orig;
	ldiv_t d;
	
	d = ldiv(ustime, 1000000);
	tv = (struct timeval){
		.tv_sec = d.quot,
		.tv_usec = d.rem,
	};
	orig = work->tv_staged;
	timersub(&orig, &tv, &work->tv_staged);
	rv = stale_work(work, share);
	work->tv_staged = orig;
	
	return rv;
}

static
void pool_update_work_restart_time(struct pool * const pool)
{
	pool->work_restart_time = time(NULL);
	get_timestamp(pool->work_restart_timestamp, sizeof(pool->work_restart_timestamp), pool->work_restart_time);
}

static void restart_threads(void)
{
	struct pool *cp = current_pool();
	int i;
	struct thr_info *thr;

	/* Artificially set the lagging flag to avoid pool not providing work
	 * fast enough  messages after every long poll */
	pool_tset(cp, &cp->lagging);

	/* Discard staged work that is now stale */
	discard_stale();

	rd_lock(&mining_thr_lock);
	
	for (i = 0; i < mining_threads; i++)
	{
		thr = mining_thr[i];
		thr->work_restart = true;
	}
	
	for (i = 0; i < mining_threads; i++)
	{
		thr = mining_thr[i];
		notifier_wake(thr->work_restart_notifier);
	}
	
	rd_unlock(&mining_thr_lock);
}

static
void blkhashstr(char *rv, const unsigned char *hash)
{
	unsigned char hash_swap[32];
	
	swap256(hash_swap, hash);
	swap32tole(hash_swap, hash_swap, 32 / 4);
	bin2hex(rv, hash_swap, 32);
}

static void set_curblock(char *hexstr, unsigned char *hash)
{
	unsigned char hash_swap[32];

	current_block_id = ((uint32_t*)hash)[0];
	strcpy(current_block, hexstr);
	swap256(hash_swap, hash);
	swap32tole(hash_swap, hash_swap, 32 / 4);

	cg_wlock(&ch_lock);
	block_time = time(NULL);
	__update_block_title(hash_swap);
	free(current_fullhash);
	current_fullhash = malloc(65);
	bin2hex(current_fullhash, hash_swap, 32);
	get_timestamp(blocktime, sizeof(blocktime), block_time);
	cg_wunlock(&ch_lock);

	applog(LOG_INFO, "New block: %s diff %s (%s)", current_hash, block_diff, net_hashrate);
}

/* Search to see if this string is from a block that has been seen before */
static bool block_exists(char *hexstr)
{
	struct block *s;

	rd_lock(&blk_lock);
	HASH_FIND_STR(blocks, hexstr, s);
	rd_unlock(&blk_lock);

	if (s)
		return true;
	return false;
}

/* Tests if this work is from a block that has been seen before */
static inline bool from_existing_block(struct work *work)
{
	char hexstr[37];
	bool ret;

	bin2hex(hexstr, work->data + 8, 18);
	ret = block_exists(hexstr);
	return ret;
}

static int block_sort(struct block *blocka, struct block *blockb)
{
	return blocka->block_no - blockb->block_no;
}

static void set_blockdiff(const struct work *work)
{
	unsigned char target[32];
	double diff;
	uint64_t diff64;

	real_block_target(target, work->data);
	diff = target_diff(target);
	diff64 = diff;

	suffix_string(diff64, block_diff, sizeof(block_diff), 0);
	format_unit2(net_hashrate, sizeof(net_hashrate),
	             true, "h/s", H2B_SHORT, diff * 7158278, -1);
	if (unlikely(current_diff != diff))
		applog(LOG_NOTICE, "Network difficulty changed to %s (%s)", block_diff, net_hashrate);
	current_diff = diff;
}

static bool test_work_current(struct work *work)
{
	bool ret = true;
	char hexstr[65];
	
	if (work->mandatory)
		return ret;
	
	uint32_t block_id = ((uint32_t*)(work->data))[1];
	
	/* Hack to work around dud work sneaking into test */
	bin2hex(hexstr, work->data + 8, 18);
	if (!strncmp(hexstr, "000000000000000000000000000000000000", 36))
		goto out_free;
	
	struct pool * const pool = work->pool;
	
	/* Search to see if this block exists yet and if not, consider it a
	 * new block and set the current block details to this one */
	if (!block_exists(hexstr))
	{
		struct block *s = calloc(sizeof(struct block), 1);
		int deleted_block = 0;
		ret = false;
		
		if (unlikely(!s))
			quit (1, "test_work_current OOM");
		strcpy(s->hash, hexstr);
		s->block_no = new_blocks++;
		
		wr_lock(&blk_lock);
		/* Only keep the last hour's worth of blocks in memory since
		 * work from blocks before this is virtually impossible and we
		 * want to prevent memory usage from continually rising */
		if (HASH_COUNT(blocks) > 6)
		{
			struct block *oldblock;
			
			HASH_SORT(blocks, block_sort);
			oldblock = blocks;
			deleted_block = oldblock->block_no;
			HASH_DEL(blocks, oldblock);
			free(oldblock);
		}
		HASH_ADD_STR(blocks, hash, s);
		set_blockdiff(work);
		wr_unlock(&blk_lock);
		pool->block_id = block_id;
		pool_update_work_restart_time(pool);
		
		if (deleted_block)
			applog(LOG_DEBUG, "Deleted block %d from database", deleted_block);
#if BLKMAKER_VERSION > 1
		template_nonce = 0;
#endif
		set_curblock(hexstr, &work->data[4]);
		if (unlikely(new_blocks == 1))
			goto out_free;
		
		if (!work->stratum)
		{
			if (work->longpoll)
			{
				applog(LOG_NOTICE, "Longpoll from pool %d detected new block",
				       pool->pool_no);
			}
			else
			if (have_longpoll)
				applog(LOG_NOTICE, "New block detected on network before longpoll");
			else
				applog(LOG_NOTICE, "New block detected on network");
		}
		restart_threads();
	}
	else
	{
		bool restart = false;
		if (unlikely(pool->block_id != block_id))
		{
			bool was_active = pool->block_id != 0;
			pool->block_id = block_id;
			pool_update_work_restart_time(pool);
			if (!work->longpoll)
				update_last_work(work);
			if (was_active)
			{
				// Pool actively changed block
				if (pool == current_pool())
					restart = true;
				if (block_id == current_block_id)
				{
					// Caught up, only announce if this pool is the one in use
					if (restart)
						applog(LOG_NOTICE, "%s %d caught up to new block",
						       work->longpoll ? "Longpoll from pool" : "Pool",
						       pool->pool_no);
				}
				else
				{
					// Switched to a block we know, but not the latest... why?
					// This might detect pools trying to double-spend or 51%,
					// but let's not make any accusations until it's had time
					// in the real world.
					blkhashstr(hexstr, &work->data[4]);
					applog(LOG_WARNING, "%s %d is issuing work for an old block: %s",
					       work->longpoll ? "Longpoll from pool" : "Pool",
					       pool->pool_no,
					       hexstr);
				}
			}
		}
		if (work->longpoll)
		{
			struct pool * const cp = current_pool();
			++pool->work_restart_id;
			if (work->tr && work->tr == pool->swork.tr)
				pool->swork.work_restart_id = pool->work_restart_id;
			update_last_work(work);
			pool_update_work_restart_time(pool);
			applog(
			       ((!opt_quiet_work_updates) && pool_actively_in_use(pool, cp) ? LOG_NOTICE : LOG_DEBUG),
			       "Longpoll from pool %d requested work update",
				pool->pool_no);
			if ((!restart) && pool == cp)
				restart = true;
		}
		if (restart)
			restart_threads();
	}
	work->longpoll = false;
out_free:
	return ret;
}

static int tv_sort(struct work *worka, struct work *workb)
{
	return worka->tv_staged.tv_sec - workb->tv_staged.tv_sec;
}

static bool work_rollable(struct work *work)
{
	return (!work->clone && work->rolltime);
}

static bool hash_push(struct work *work)
{
	bool rc = true;

	mutex_lock(stgd_lock);
	if (work_rollable(work))
		staged_rollable++;
	if (likely(!getq->frozen)) {
		HASH_ADD_INT(staged_work, id, work);
		HASH_SORT(staged_work, tv_sort);
	} else
		rc = false;
	pthread_cond_broadcast(&getq->cond);
	mutex_unlock(stgd_lock);

	return rc;
}

static void stage_work(struct work *work)
{
	applog(LOG_DEBUG, "Pushing work %d from pool %d to hash queue",
	       work->id, work->pool->pool_no);
	work->work_restart_id = work->pool->work_restart_id;
	work->pool->last_work_time = time(NULL);
	cgtime(&work->pool->tv_last_work_time);
	test_work_current(work);
	work->pool->works++;
	hash_push(work);
}

#ifdef HAVE_CURSES
int curses_int(const char *query)
{
	int ret;
	char *cvar;

	cvar = curses_input(query);
	if (unlikely(!cvar))
		return -1;
	ret = atoi(cvar);
	free(cvar);
	return ret;
}
#endif

#ifdef HAVE_CURSES
static bool input_pool(bool live);
#endif

#ifdef HAVE_CURSES
static void display_pool_summary(struct pool *pool)
{
	double efficiency = 0.0;
	char xfer[ALLOC_H2B_NOUNIT+ALLOC_H2B_SPACED+4+1], bw[ALLOC_H2B_NOUNIT+ALLOC_H2B_SPACED+6+1];
	int pool_secs;

	if (curses_active_locked()) {
		wlog("Pool: %s\n", pool->rpc_url);
		if (pool->solved)
			wlog("SOLVED %d BLOCK%s!\n", pool->solved, pool->solved > 1 ? "S" : "");
		if (!pool->has_stratum)
			wlog("%s own long-poll support\n", pool->lp_url ? "Has" : "Does not have");
		wlog(" Queued work requests: %d\n", pool->getwork_requested);
		wlog(" Share submissions: %d\n", pool->accepted + pool->rejected);
		wlog(" Accepted shares: %d\n", pool->accepted);
		wlog(" Rejected shares: %d + %d stale (%.2f%%)\n",
		     pool->rejected, pool->stale_shares,
		     (float)(pool->rejected + pool->stale_shares) / (float)(pool->rejected + pool->stale_shares + pool->accepted)
		);
		wlog(" Accepted difficulty shares: %1.f\n", pool->diff_accepted);
		wlog(" Rejected difficulty shares: %1.f\n", pool->diff_rejected);
		pool_secs = timer_elapsed(&pool->cgminer_stats.start_tv, NULL);
		wlog(" Network transfer: %s  (%s)\n",
		     multi_format_unit2(xfer, sizeof(xfer), true, "B", H2B_SPACED, " / ", 2,
		                       (float)pool->cgminer_pool_stats.net_bytes_received,
		                       (float)pool->cgminer_pool_stats.net_bytes_sent),
		     multi_format_unit2(bw, sizeof(bw), true, "B/s", H2B_SPACED, " / ", 2,
		                       (float)(pool->cgminer_pool_stats.net_bytes_received / pool_secs),
		                       (float)(pool->cgminer_pool_stats.net_bytes_sent / pool_secs)));
		uint64_t pool_bytes_xfer = pool->cgminer_pool_stats.net_bytes_received + pool->cgminer_pool_stats.net_bytes_sent;
		efficiency = pool_bytes_xfer ? pool->diff_accepted * 2048. / pool_bytes_xfer : 0.0;
		wlog(" Efficiency (accepted * difficulty / 2 KB): %.2f\n", efficiency);

		wlog(" Items worked on: %d\n", pool->works);
		wlog(" Stale submissions discarded due to new blocks: %d\n", pool->stale_shares);
		wlog(" Unable to get work from server occasions: %d\n", pool->getfail_occasions);
		wlog(" Submitting work remotely delay occasions: %d\n\n", pool->remotefail_occasions);
		unlock_curses();
	}
}
#endif

/* We can't remove the memory used for this struct pool because there may
 * still be work referencing it. We just remove it from the pools list */
void remove_pool(struct pool *pool)
{
	int i, last_pool = total_pools - 1;
	struct pool *other;

	/* Boost priority of any lower prio than this one */
	for (i = 0; i < total_pools; i++) {
		other = pools[i];
		if (other->prio > pool->prio)
			other->prio--;
	}

	if (pool->pool_no < last_pool) {
		/* Swap the last pool for this one */
		(pools[last_pool])->pool_no = pool->pool_no;
		pools[pool->pool_no] = pools[last_pool];
	}
	/* Give it an invalid number */
	pool->pool_no = total_pools;
	pool->removed = true;
	pool->has_stratum = false;
	total_pools--;
}

/* add a mutex if this needs to be thread safe in the future */
static struct JE {
	char *buf;
	struct JE *next;
} *jedata = NULL;

static void json_escape_free()
{
	struct JE *jeptr = jedata;
	struct JE *jenext;

	jedata = NULL;

	while (jeptr) {
		jenext = jeptr->next;
		free(jeptr->buf);
		free(jeptr);
		jeptr = jenext;
	}
}

static
char *json_escape(const char *str)
{
	struct JE *jeptr;
	char *buf, *ptr;

	/* 2x is the max, may as well just allocate that */
	ptr = buf = malloc(strlen(str) * 2 + 1);

	jeptr = malloc(sizeof(*jeptr));

	jeptr->buf = buf;
	jeptr->next = jedata;
	jedata = jeptr;

	while (*str) {
		if (*str == '\\' || *str == '"')
			*(ptr++) = '\\';

		*(ptr++) = *(str++);
	}

	*ptr = '\0';

	return buf;
}

static
void _write_config_string_elist(FILE *fcfg, const char *configname, struct string_elist * const elist)
{
	if (!elist)
		return;
	
	static struct string_elist *entry;
	fprintf(fcfg, ",\n\"%s\" : [", configname);
	bool first = true;
	DL_FOREACH(elist, entry)
	{
		const char * const s = entry->string;
		fprintf(fcfg, "%s\n\t\"%s\"", first ? "" : ",", json_escape(s));
		first = false;
	}
	fprintf(fcfg, "\n]");
}

void write_config(FILE *fcfg)
{
	int i;

	/* Write pool values */
	fputs("{\n\"pools\" : [", fcfg);
	for(i = 0; i < total_pools; i++) {
		struct pool *pool = pools[i];

		if (pool->quota != 1) {
			fprintf(fcfg, "%s\n\t{\n\t\t\"quota\" : \"%d;%s\",", i > 0 ? "," : "",
				pool->quota,
				json_escape(pool->rpc_url));
		} else {
			fprintf(fcfg, "%s\n\t{\n\t\t\"url\" : \"%s\",", i > 0 ? "," : "",
				json_escape(pool->rpc_url));
		}
		if (pool->rpc_proxy)
			fprintf(fcfg, "\n\t\t\"pool-proxy\" : \"%s\",", json_escape(pool->rpc_proxy));
		fprintf(fcfg, "\n\t\t\"user\" : \"%s\",", json_escape(pool->rpc_user));
		fprintf(fcfg, "\n\t\t\"pass\" : \"%s\",", json_escape(pool->rpc_pass));
		fprintf(fcfg, "\n\t\t\"pool-priority\" : \"%d\"", pool->prio);
		if (pool->force_rollntime)
			fprintf(fcfg, ",\n\t\t\"force-rollntime\" : %d", pool->force_rollntime);
		fprintf(fcfg, "\n\t}");
	}
	fputs("\n]\n", fcfg);

#ifdef HAVE_OPENCL
	write_config_opencl(fcfg);
#endif
#ifdef WANT_CPUMINE
	fprintf(fcfg, ",\n\"algo\" : \"%s\"", algo_names[opt_algo]);
#endif

	/* Simple bool and int options */
	struct opt_table *opt;
	for (opt = opt_config_table; opt->type != OPT_END; opt++) {
		char *p, *name = strdup(opt->names);
		for (p = strtok(name, "|"); p; p = strtok(NULL, "|")) {
			if (p[1] != '-')
				continue;
			if (opt->type & OPT_NOARG &&
			   ((void *)opt->cb == (void *)opt_set_bool || (void *)opt->cb == (void *)opt_set_invbool) &&
			   (*(bool *)opt->u.arg == ((void *)opt->cb == (void *)opt_set_bool)))
				fprintf(fcfg, ",\n\"%s\" : true", p+2);

			if (opt->type & OPT_HASARG &&
			   ((void *)opt->cb_arg == (void *)set_int_0_to_9999 ||
			   (void *)opt->cb_arg == (void *)set_int_1_to_65535 ||
			   (void *)opt->cb_arg == (void *)set_int_0_to_10 ||
			   (void *)opt->cb_arg == (void *)set_int_1_to_10) &&
			   opt->desc != opt_hidden &&
			   0 <= *(int *)opt->u.arg)
				fprintf(fcfg, ",\n\"%s\" : \"%d\"", p+2, *(int *)opt->u.arg);
		}
	}

	/* Special case options */
	if (request_target_str)
	{
		if (request_pdiff == (long)request_pdiff)
			fprintf(fcfg, ",\n\"request-diff\" : %ld", (long)request_pdiff);
		else
			fprintf(fcfg, ",\n\"request-diff\" : %f", request_pdiff);
	}
	fprintf(fcfg, ",\n\"shares\" : %g", opt_shares);
	if (pool_strategy == POOL_BALANCE)
		fputs(",\n\"balance\" : true", fcfg);
	if (pool_strategy == POOL_LOADBALANCE)
		fputs(",\n\"load-balance\" : true", fcfg);
	if (pool_strategy == POOL_ROUNDROBIN)
		fputs(",\n\"round-robin\" : true", fcfg);
	if (pool_strategy == POOL_ROTATE)
		fprintf(fcfg, ",\n\"rotate\" : \"%d\"", opt_rotate_period);
#if defined(unix) || defined(__APPLE__)
	if (opt_stderr_cmd && *opt_stderr_cmd)
		fprintf(fcfg, ",\n\"monitor\" : \"%s\"", json_escape(opt_stderr_cmd));
#endif // defined(unix)
	if (opt_kernel_path && *opt_kernel_path) {
		char *kpath = strdup(opt_kernel_path);
		if (kpath[strlen(kpath)-1] == '/')
			kpath[strlen(kpath)-1] = 0;
		fprintf(fcfg, ",\n\"kernel-path\" : \"%s\"", json_escape(kpath));
		free(kpath);
	}
	if (schedstart.enable)
		fprintf(fcfg, ",\n\"sched-time\" : \"%d:%d\"", schedstart.tm.tm_hour, schedstart.tm.tm_min);
	if (schedstop.enable)
		fprintf(fcfg, ",\n\"stop-time\" : \"%d:%d\"", schedstop.tm.tm_hour, schedstop.tm.tm_min);
	if (opt_socks_proxy && *opt_socks_proxy)
		fprintf(fcfg, ",\n\"socks-proxy\" : \"%s\"", json_escape(opt_socks_proxy));
	
	_write_config_string_elist(fcfg, "scan", scan_devices);
#ifdef USE_LIBMICROHTTPD
	if (httpsrv_port != -1)
		fprintf(fcfg, ",\n\"http-port\" : %d", httpsrv_port);
#endif
#ifdef USE_LIBEVENT
	if (stratumsrv_port != -1)
		fprintf(fcfg, ",\n\"stratum-port\" : %d", stratumsrv_port);
#endif
	_write_config_string_elist(fcfg, "device", opt_devices_enabled_list);
	_write_config_string_elist(fcfg, "set-device", opt_set_device_list);
	
	if (opt_api_allow)
		fprintf(fcfg, ",\n\"api-allow\" : \"%s\"", json_escape(opt_api_allow));
	if (strcmp(opt_api_mcast_addr, API_MCAST_ADDR) != 0)
		fprintf(fcfg, ",\n\"api-mcast-addr\" : \"%s\"", json_escape(opt_api_mcast_addr));
	if (strcmp(opt_api_mcast_code, API_MCAST_CODE) != 0)
		fprintf(fcfg, ",\n\"api-mcast-code\" : \"%s\"", json_escape(opt_api_mcast_code));
	if (*opt_api_mcast_des)
		fprintf(fcfg, ",\n\"api-mcast-des\" : \"%s\"", json_escape(opt_api_mcast_des));
	if (strcmp(opt_api_description, PACKAGE_STRING) != 0)
		fprintf(fcfg, ",\n\"api-description\" : \"%s\"", json_escape(opt_api_description));
	if (opt_api_groups)
		fprintf(fcfg, ",\n\"api-groups\" : \"%s\"", json_escape(opt_api_groups));
	fputs("\n}\n", fcfg);

	json_escape_free();
}

void zero_bestshare(void)
{
	int i;

	best_diff = 0;
	suffix_string(best_diff, best_share, sizeof(best_share), 0);

	for (i = 0; i < total_pools; i++) {
		struct pool *pool = pools[i];
		pool->best_diff = 0;
	}
}

void zero_stats(void)
{
	int i;
	
	applog(LOG_DEBUG, "Zeroing stats");

	cgtime(&total_tv_start);
	miner_started = total_tv_start;
	total_rolling = 0;
	total_mhashes_done = 0;
	total_getworks = 0;
	total_accepted = 0;
	total_rejected = 0;
	hw_errors = 0;
	total_stale = 0;
	total_discarded = 0;
	total_bytes_rcvd = total_bytes_sent = 0;
	new_blocks = 0;
	local_work = 0;
	total_go = 0;
	total_ro = 0;
	total_secs = 1.0;
	total_diff1 = 0;
	total_bad_diff1 = 0;
	found_blocks = 0;
	total_diff_accepted = 0;
	total_diff_rejected = 0;
	total_diff_stale = 0;
#ifdef HAVE_CURSES
	awidth = rwidth = swidth = hwwidth = 1;
#endif

	for (i = 0; i < total_pools; i++) {
		struct pool *pool = pools[i];

		pool->getwork_requested = 0;
		pool->accepted = 0;
		pool->rejected = 0;
		pool->solved = 0;
		pool->getwork_requested = 0;
		pool->stale_shares = 0;
		pool->discarded_work = 0;
		pool->getfail_occasions = 0;
		pool->remotefail_occasions = 0;
		pool->last_share_time = 0;
		pool->diff1 = 0;
		pool->diff_accepted = 0;
		pool->diff_rejected = 0;
		pool->diff_stale = 0;
		pool->last_share_diff = 0;
		pool->cgminer_stats.start_tv = total_tv_start;
		pool->cgminer_stats.getwork_calls = 0;
		pool->cgminer_stats.getwork_wait_min.tv_sec = MIN_SEC_UNSET;
		pool->cgminer_stats.getwork_wait_max.tv_sec = 0;
		pool->cgminer_stats.getwork_wait_max.tv_usec = 0;
		pool->cgminer_pool_stats.getwork_calls = 0;
		pool->cgminer_pool_stats.getwork_attempts = 0;
		pool->cgminer_pool_stats.getwork_wait_min.tv_sec = MIN_SEC_UNSET;
		pool->cgminer_pool_stats.getwork_wait_max.tv_sec = 0;
		pool->cgminer_pool_stats.getwork_wait_max.tv_usec = 0;
		pool->cgminer_pool_stats.min_diff = 0;
		pool->cgminer_pool_stats.max_diff = 0;
		pool->cgminer_pool_stats.min_diff_count = 0;
		pool->cgminer_pool_stats.max_diff_count = 0;
		pool->cgminer_pool_stats.times_sent = 0;
		pool->cgminer_pool_stats.bytes_sent = 0;
		pool->cgminer_pool_stats.net_bytes_sent = 0;
		pool->cgminer_pool_stats.times_received = 0;
		pool->cgminer_pool_stats.bytes_received = 0;
		pool->cgminer_pool_stats.net_bytes_received = 0;
	}

	zero_bestshare();

	for (i = 0; i < total_devices; ++i) {
		struct cgpu_info *cgpu = get_devices(i);

		mutex_lock(&hash_lock);
		cgpu->total_mhashes = 0;
		cgpu->accepted = 0;
		cgpu->rejected = 0;
		cgpu->stale = 0;
		cgpu->hw_errors = 0;
		cgpu->utility = 0.0;
		cgpu->utility_diff1 = 0;
		cgpu->last_share_pool_time = 0;
		cgpu->bad_diff1 = 0;
		cgpu->diff1 = 0;
		cgpu->diff_accepted = 0;
		cgpu->diff_rejected = 0;
		cgpu->diff_stale = 0;
		cgpu->last_share_diff = 0;
		cgpu->thread_fail_init_count = 0;
		cgpu->thread_zero_hash_count = 0;
		cgpu->thread_fail_queue_count = 0;
		cgpu->dev_sick_idle_60_count = 0;
		cgpu->dev_dead_idle_600_count = 0;
		cgpu->dev_nostart_count = 0;
		cgpu->dev_over_heat_count = 0;
		cgpu->dev_thermal_cutoff_count = 0;
		cgpu->dev_comms_error_count = 0;
		cgpu->dev_throttle_count = 0;
		cgpu->cgminer_stats.start_tv = total_tv_start;
		cgpu->cgminer_stats.getwork_calls = 0;
		cgpu->cgminer_stats.getwork_wait_min.tv_sec = MIN_SEC_UNSET;
		cgpu->cgminer_stats.getwork_wait_max.tv_sec = 0;
		cgpu->cgminer_stats.getwork_wait_max.tv_usec = 0;
		mutex_unlock(&hash_lock);
	}
}

#ifdef HAVE_CURSES
static
void loginput_mode(const int size)
{
	clear_logwin();
	loginput_size = size;
	check_winsizes();
}

static void display_pools(void)
{
	struct pool *pool;
	int selected, i, j;
	char input;

	loginput_mode(7 + total_pools);
	immedok(logwin, true);
updated:
	for (j = 0; j < total_pools; j++) {
		for (i = 0; i < total_pools; i++) {
			pool = pools[i];

			if (pool->prio != j)
				continue;

			if (pool == current_pool())
				wattron(logwin, A_BOLD);
			if (pool->enabled != POOL_ENABLED)
				wattron(logwin, A_DIM);
			wlogprint("%d: ", pool->prio);
			switch (pool->enabled) {
				case POOL_ENABLED:
					wlogprint("Enabled  ");
					break;
				case POOL_DISABLED:
					wlogprint("Disabled ");
					break;
				case POOL_REJECTING:
					wlogprint("Rejectin ");
					break;
			}
			_wlogprint(pool_proto_str(pool));
			wlogprint(" Quota %d Pool %d: %s  User:%s\n",
				pool->quota,
				pool->pool_no,
				pool->rpc_url, pool->rpc_user);
			wattroff(logwin, A_BOLD | A_DIM);

			break; //for (i = 0; i < total_pools; i++)
		}
	}
retry:
	wlogprint("\nCurrent pool management strategy: %s\n",
		strategies[pool_strategy].s);
	if (pool_strategy == POOL_ROTATE)
		wlogprint("Set to rotate every %d minutes\n", opt_rotate_period);
	wlogprint("[F]ailover only %s\n", opt_fail_only ? "enabled" : "disabled");
	wlogprint("Pool [A]dd [R]emove [D]isable [E]nable [P]rioritize [Q]uota change\n");
	wlogprint("[C]hange management strategy [S]witch pool [I]nformation\n");
	wlogprint("Or press any other key to continue\n");
	logwin_update();
	input = getch();

	if (!strncasecmp(&input, "a", 1)) {
		if (opt_benchmark)
		{
			wlogprint("Cannot add pools in benchmark mode");
			goto retry;
		}
		input_pool(true);
		goto updated;
	} else if (!strncasecmp(&input, "r", 1)) {
		if (total_pools <= 1) {
			wlogprint("Cannot remove last pool");
			goto retry;
		}
		selected = curses_int("Select pool number");
		if (selected < 0 || selected >= total_pools) {
			wlogprint("Invalid selection\n");
			goto retry;
		}
		pool = pools[selected];
		if (pool == current_pool())
			switch_pools(NULL);
		if (pool == current_pool()) {
			wlogprint("Unable to remove pool due to activity\n");
			goto retry;
		}
		disable_pool(pool);
		remove_pool(pool);
		goto updated;
	} else if (!strncasecmp(&input, "s", 1)) {
		selected = curses_int("Select pool number");
		if (selected < 0 || selected >= total_pools) {
			wlogprint("Invalid selection\n");
			goto retry;
		}
		pool = pools[selected];
		enable_pool(pool);
		switch_pools(pool);
		goto updated;
	} else if (!strncasecmp(&input, "d", 1)) {
		if (enabled_pools <= 1) {
			wlogprint("Cannot disable last pool");
			goto retry;
		}
		selected = curses_int("Select pool number");
		if (selected < 0 || selected >= total_pools) {
			wlogprint("Invalid selection\n");
			goto retry;
		}
		pool = pools[selected];
		disable_pool(pool);
		if (pool == current_pool())
			switch_pools(NULL);
		goto updated;
	} else if (!strncasecmp(&input, "e", 1)) {
		selected = curses_int("Select pool number");
		if (selected < 0 || selected >= total_pools) {
			wlogprint("Invalid selection\n");
			goto retry;
		}
		pool = pools[selected];
		enable_pool(pool);
		if (pool->prio < current_pool()->prio)
			switch_pools(pool);
		goto updated;
	} else if (!strncasecmp(&input, "c", 1)) {
		for (i = 0; i <= TOP_STRATEGY; i++)
			wlogprint("%d: %s\n", i, strategies[i].s);
		selected = curses_int("Select strategy number type");
		if (selected < 0 || selected > TOP_STRATEGY) {
			wlogprint("Invalid selection\n");
			goto retry;
		}
		if (selected == POOL_ROTATE) {
			opt_rotate_period = curses_int("Select interval in minutes");

			if (opt_rotate_period < 0 || opt_rotate_period > 9999) {
				opt_rotate_period = 0;
				wlogprint("Invalid selection\n");
				goto retry;
			}
		}
		pool_strategy = selected;
		switch_pools(NULL);
		goto updated;
	} else if (!strncasecmp(&input, "i", 1)) {
		selected = curses_int("Select pool number");
		if (selected < 0 || selected >= total_pools) {
			wlogprint("Invalid selection\n");
			goto retry;
		}
		pool = pools[selected];
		display_pool_summary(pool);
		goto retry;
	} else if (!strncasecmp(&input, "q", 1)) {
		selected = curses_int("Select pool number");
		if (selected < 0 || selected >= total_pools) {
			wlogprint("Invalid selection\n");
			goto retry;
		}
		pool = pools[selected];
		selected = curses_int("Set quota");
		if (selected < 0) {
			wlogprint("Invalid negative quota\n");
			goto retry;
		}
		pool->quota = selected;
		adjust_quota_gcd();
		goto updated;
	} else if (!strncasecmp(&input, "f", 1)) {
		opt_fail_only ^= true;
		goto updated;
        } else if (!strncasecmp(&input, "p", 1)) {
			char *prilist = curses_input("Enter new pool priority (comma separated list)");
			if (!prilist)
			{
				wlogprint("Not changing priorities\n");
				goto retry;
			}
			int res = prioritize_pools(prilist, &i);
			free(prilist);
			switch (res) {
        		case MSG_NOPOOL:
        			wlogprint("No pools\n");
        			goto retry;
        		case MSG_MISPID:
        			wlogprint("Missing pool id parameter\n");
        			goto retry;
        		case MSG_INVPID:
        			wlogprint("Invalid pool id %d - range is 0 - %d\n", i, total_pools - 1);
        			goto retry;
        		case MSG_DUPPID:
        			wlogprint("Duplicate pool specified %d\n", i);
        			goto retry;
        		case MSG_POOLPRIO:
        		default:
        			goto updated;
        	}
	}

	immedok(logwin, false);
	loginput_mode(0);
}

static const char *summary_detail_level_str(void)
{
	if (opt_compact)
		return "compact";
	if (opt_show_procs)
		return "processors";
	return "devices";
}

static void display_options(void)
{
	int selected;
	char input;

	immedok(logwin, true);
	loginput_mode(12);
retry:
	clear_logwin();
	wlogprint("[N]ormal [C]lear [S]ilent mode (disable all output)\n");
	wlogprint("[D]ebug:%s\n[P]er-device:%s\n[Q]uiet:%s\n[V]erbose:%s\n"
		  "[R]PC debug:%s\n[W]orkTime details:%s\nsu[M]mary detail level:%s\n"
		  "[L]og interval:%d\nS[T]atistical counts: %s\n[Z]ero statistics\n",
		opt_debug_console ? "on" : "off",
	        want_per_device_stats? "on" : "off",
		opt_quiet ? "on" : "off",
		opt_log_output ? "on" : "off",
		opt_protocol ? "on" : "off",
		opt_worktime ? "on" : "off",
		summary_detail_level_str(),
		opt_log_interval,
		opt_weighed_stats ? "weighed" : "absolute");
	wlogprint("Select an option or any other key to return\n");
	logwin_update();
	input = getch();
	if (!strncasecmp(&input, "q", 1)) {
		opt_quiet ^= true;
		wlogprint("Quiet mode %s\n", opt_quiet ? "enabled" : "disabled");
		goto retry;
	} else if (!strncasecmp(&input, "v", 1)) {
		opt_log_output ^= true;
		if (opt_log_output)
			opt_quiet = false;
		wlogprint("Verbose mode %s\n", opt_log_output ? "enabled" : "disabled");
		goto retry;
	} else if (!strncasecmp(&input, "n", 1)) {
		opt_log_output = false;
		opt_debug_console = false;
		opt_quiet = false;
		opt_protocol = false;
		opt_compact = false;
		opt_show_procs = false;
		devsummaryYOffset = 0;
		want_per_device_stats = false;
		wlogprint("Output mode reset to normal\n");
		switch_logsize();
		goto retry;
	} else if (!strncasecmp(&input, "d", 1)) {
		opt_debug = true;
		opt_debug_console ^= true;
		opt_log_output = opt_debug_console;
		if (opt_debug_console)
			opt_quiet = false;
		wlogprint("Debug mode %s\n", opt_debug_console ? "enabled" : "disabled");
		goto retry;
	} else if (!strncasecmp(&input, "m", 1)) {
		if (opt_compact)
			opt_compact = false;
		else
		if (!opt_show_procs)
			opt_show_procs = true;
		else
		{
			opt_compact = true;
			opt_show_procs = false;
			devsummaryYOffset = 0;
		}
		wlogprint("su[M]mary detail level changed to: %s\n", summary_detail_level_str());
		switch_logsize();
		goto retry;
	} else if (!strncasecmp(&input, "p", 1)) {
		want_per_device_stats ^= true;
		opt_log_output = want_per_device_stats;
		wlogprint("Per-device stats %s\n", want_per_device_stats ? "enabled" : "disabled");
		goto retry;
	} else if (!strncasecmp(&input, "r", 1)) {
		opt_protocol ^= true;
		if (opt_protocol)
			opt_quiet = false;
		wlogprint("RPC protocol debugging %s\n", opt_protocol ? "enabled" : "disabled");
		goto retry;
	} else if (!strncasecmp(&input, "c", 1))
		clear_logwin();
	else if (!strncasecmp(&input, "l", 1)) {
		selected = curses_int("Interval in seconds");
		if (selected < 0 || selected > 9999) {
			wlogprint("Invalid selection\n");
			goto retry;
		}
		opt_log_interval = selected;
		wlogprint("Log interval set to %d seconds\n", opt_log_interval);
		goto retry;
	} else if (!strncasecmp(&input, "s", 1)) {
		opt_realquiet = true;
	} else if (!strncasecmp(&input, "w", 1)) {
		opt_worktime ^= true;
		wlogprint("WorkTime details %s\n", opt_worktime ? "enabled" : "disabled");
		goto retry;
	} else if (!strncasecmp(&input, "t", 1)) {
		opt_weighed_stats ^= true;
		wlogprint("Now displaying %s statistics\n", opt_weighed_stats ? "weighed" : "absolute");
		goto retry;
	} else if (!strncasecmp(&input, "z", 1)) {
		zero_stats();
		goto retry;
	}

	immedok(logwin, false);
	loginput_mode(0);
}
#endif

void default_save_file(char *filename)
{
#if defined(unix) || defined(__APPLE__)
	if (getenv("HOME") && *getenv("HOME")) {
	        strcpy(filename, getenv("HOME"));
		strcat(filename, "/");
	}
	else
		strcpy(filename, "");
	strcat(filename, ".bfgminer/");
	mkdir(filename, 0777);
#else
	strcpy(filename, "");
#endif
	strcat(filename, def_conf);
}

#ifdef HAVE_CURSES
static void set_options(void)
{
	int selected;
	char input;

	immedok(logwin, true);
	loginput_mode(8);
retry:
	wlogprint("\n[L]ongpoll: %s\n", want_longpoll ? "On" : "Off");
	wlogprint("[Q]ueue: %d\n[S]cantime: %d\n[E]xpiry: %d\n[R]etries: %d\n"
		  "[W]rite config file\n[B]FGMiner restart\n",
		opt_queue, opt_scantime, opt_expiry, opt_retries);
	wlogprint("Select an option or any other key to return\n");
	logwin_update();
	input = getch();

	if (!strncasecmp(&input, "q", 1)) {
		selected = curses_int("Extra work items to queue");
		if (selected < 0 || selected > 9999) {
			wlogprint("Invalid selection\n");
			goto retry;
		}
		opt_queue = selected;
		goto retry;
	} else if (!strncasecmp(&input, "l", 1)) {
		if (want_longpoll)
			stop_longpoll();
		else
			start_longpoll();
		applog(LOG_WARNING, "Longpoll %s", want_longpoll ? "enabled" : "disabled");
		goto retry;
	} else if  (!strncasecmp(&input, "s", 1)) {
		selected = curses_int("Set scantime in seconds");
		if (selected < 0 || selected > 9999) {
			wlogprint("Invalid selection\n");
			goto retry;
		}
		opt_scantime = selected;
		goto retry;
	} else if  (!strncasecmp(&input, "e", 1)) {
		selected = curses_int("Set expiry time in seconds");
		if (selected < 0 || selected > 9999) {
			wlogprint("Invalid selection\n");
			goto retry;
		}
		opt_expiry = selected;
		goto retry;
	} else if  (!strncasecmp(&input, "r", 1)) {
		selected = curses_int("Retries before failing (-1 infinite)");
		if (selected < -1 || selected > 9999) {
			wlogprint("Invalid selection\n");
			goto retry;
		}
		opt_retries = selected;
		goto retry;
	} else if  (!strncasecmp(&input, "w", 1)) {
		FILE *fcfg;
		char *str, filename[PATH_MAX], prompt[PATH_MAX + 50];

		default_save_file(filename);
		snprintf(prompt, sizeof(prompt), "Config filename to write (Enter for default) [%s]", filename);
		str = curses_input(prompt);
		if (str) {
			struct stat statbuf;

			strcpy(filename, str);
			free(str);
			if (!stat(filename, &statbuf)) {
				wlogprint("File exists, overwrite?\n");
				input = getch();
				if (strncasecmp(&input, "y", 1))
					goto retry;
			}
		}
		fcfg = fopen(filename, "w");
		if (!fcfg) {
			wlogprint("Cannot open or create file\n");
			goto retry;
		}
		write_config(fcfg);
		fclose(fcfg);
		goto retry;

	} else if (!strncasecmp(&input, "b", 1)) {
		wlogprint("Are you sure?\n");
		input = getch();
		if (!strncasecmp(&input, "y", 1))
			app_restart();
		else
			clear_logwin();
	} else
		clear_logwin();

	loginput_mode(0);
	immedok(logwin, false);
}

int scan_serial(const char *);

static
void _managetui_msg(const char *repr, const char **msg)
{
	if (*msg)
	{
		applog(LOG_DEBUG, "ManageTUI: %"PRIpreprv": %s", repr, *msg);
		wattron(logwin, A_BOLD);
		wlogprint("%s", *msg);
		wattroff(logwin, A_BOLD);
		*msg = NULL;
	}
	logwin_update();
}

void manage_device(void)
{
	char logline[256];
	const char *msg = NULL;
	struct cgpu_info *cgpu;
	const struct device_drv *drv;
	
	selecting_device = true;
	immedok(logwin, true);
	loginput_mode(12);
	
devchange:
	if (unlikely(!total_devices))
	{
		clear_logwin();
		wlogprint("(no devices)\n");
		wlogprint("[Plus] Add device(s)  [Enter] Close device manager\n");
		_managetui_msg("(none)", &msg);
		int input = getch();
		switch (input)
		{
			case '+':  case '=':  // add new device
				goto addnew;
			default:
				goto out;
		}
	}
	
	cgpu = devices[selected_device];
	drv = cgpu->drv;
	refresh_devstatus();
	
refresh:
	clear_logwin();
	wlogprint("Select processor to manage using up/down arrow keys\n");
	
	get_statline3(logline, sizeof(logline), cgpu, true, true);
	wattron(logwin, A_BOLD);
	wlogprint("%s", logline);
	wattroff(logwin, A_BOLD);
	wlogprint("\n");
	
	if (cgpu->dev_manufacturer)
		wlogprint("  %s from %s\n", (cgpu->dev_product ?: "Device"), cgpu->dev_manufacturer);
	else
	if (cgpu->dev_product)
		wlogprint("  %s\n", cgpu->dev_product);
	
	if (cgpu->dev_serial)
		wlogprint("Serial: %s\n", cgpu->dev_serial);
	
	if (cgpu->kname)
		wlogprint("Kernel: %s\n", cgpu->kname);
	
	if (drv->proc_wlogprint_status && likely(cgpu->status != LIFE_INIT))
		drv->proc_wlogprint_status(cgpu);
	
	wlogprint("\n");
	// TODO: Last share at TIMESTAMP on pool N
	// TODO: Custom device info/commands
	if (cgpu->deven != DEV_ENABLED)
		wlogprint("[E]nable ");
	if (cgpu->deven != DEV_DISABLED)
		wlogprint("[D]isable ");
	if (drv->identify_device)
		wlogprint("[I]dentify ");
	if (drv->proc_tui_wlogprint_choices && likely(cgpu->status != LIFE_INIT))
		drv->proc_tui_wlogprint_choices(cgpu);
	wlogprint("\n");
	wlogprint("[Slash] Find processor  [Plus] Add device(s)  [Enter] Close device manager\n");
	_managetui_msg(cgpu->proc_repr, &msg);
	
	while (true)
	{
		int input = getch();
		applog(LOG_DEBUG, "ManageTUI: %"PRIpreprv": (choice %d)", cgpu->proc_repr, input);
		switch (input) {
			case 'd': case 'D':
				if (cgpu->deven == DEV_DISABLED)
					msg = "Processor already disabled\n";
				else
				{
					cgpu->deven = DEV_DISABLED;
					msg = "Processor being disabled\n";
				}
				goto refresh;
			case 'e': case 'E':
				if (cgpu->deven == DEV_ENABLED)
					msg = "Processor already enabled\n";
				else
				{
					proc_enable(cgpu);
					msg = "Processor being enabled\n";
				}
				goto refresh;
			case 'i': case 'I':
				if (drv->identify_device && drv->identify_device(cgpu))
					msg = "Identify command sent\n";
				else
					goto key_default;
				goto refresh;
			case KEY_DOWN:
				if (selected_device >= total_devices - 1)
					break;
				++selected_device;
				goto devchange;
			case KEY_UP:
				if (selected_device <= 0)
					break;
				--selected_device;
				goto devchange;
			case KEY_NPAGE:
			{
				if (selected_device >= total_devices - 1)
					break;
				struct cgpu_info *mdev = devices[selected_device]->device;
				do {
					++selected_device;
				} while (devices[selected_device]->device == mdev && selected_device < total_devices - 1);
				goto devchange;
			}
			case KEY_PPAGE:
			{
				if (selected_device <= 0)
					break;
				struct cgpu_info *mdev = devices[selected_device]->device;
				do {
					--selected_device;
				} while (devices[selected_device]->device == mdev && selected_device > 0);
				goto devchange;
			}
			case '/':  case '?':  // find device
			{
				static char *pattern = NULL;
				char *newpattern = curses_input("Enter pattern");
				if (newpattern)
				{
					free(pattern);
					pattern = newpattern;
				}
				else
				if (!pattern)
					pattern = calloc(1, 1);
				int match = cgpu_search(pattern, selected_device + 1);
				if (match == -1)
				{
					msg = "Couldn't find device\n";
					goto refresh;
				}
				selected_device = match;
				goto devchange;
			}
			case '+':  case '=':  // add new device
			{
addnew:
				clear_logwin();
				_wlogprint(
					"Enter \"auto\", \"all\", or a serial port to probe for mining devices.\n"
					"Prefix by a driver name and colon to only probe a specific driver.\n"
					"For example: erupter:"
#ifdef WIN32
					"\\\\.\\COM40"
#elif defined(__APPLE__)
					"/dev/cu.SLAB_USBtoUART"
#else
					"/dev/ttyUSB39"
#endif
					"\n"
				);
				char *scanser = curses_input("Enter target");
				if (scan_serial(scanser))
				{
					selected_device = total_devices - 1;
					msg = "Device scan succeeded\n";
				}
				else
					msg = "No new devices found\n";
				goto devchange;
			}
			case 'Q': case 'q':
			case KEY_BREAK: case KEY_BACKSPACE: case KEY_CANCEL: case KEY_CLOSE: case KEY_EXIT:
			case '\x1b':  // ESC
			case KEY_ENTER:
			case '\r':  // Ctrl-M on Windows, with nonl
#ifdef PADENTER
			case PADENTER:  // pdcurses, used by Enter key on Windows with nonl
#endif
			case '\n':
				goto out;
			default:
				;
key_default:
				if (drv->proc_tui_handle_choice && likely(drv_ready(cgpu)))
				{
					msg = drv->proc_tui_handle_choice(cgpu, input);
					if (msg)
						goto refresh;
				}
		}
	}

out:
	selecting_device = false;
	loginput_mode(0);
	immedok(logwin, false);
}

void show_help(void)
{
	loginput_mode(11);
	
	// NOTE: wlogprint is a macro with a buffer limit
	_wlogprint(
		"LU: oldest explicit work update currently being used for new work\n"
		"ST: work in queue              | F: network fails   | NB: new blocks detected\n"
		"AS: shares being submitted     | BW: bandwidth (up/down)\n"
		"E: # shares * diff per 2kB bw  | I: expected income | BS: best share ever found\n"
		U8_HLINE U8_HLINE U8_HLINE U8_HLINE U8_HLINE U8_HLINE U8_HLINE U8_HLINE
		U8_HLINE U8_HLINE U8_HLINE U8_HLINE U8_HLINE U8_HLINE U8_HLINE U8_HLINE
		U8_HLINE U8_HLINE U8_HLINE U8_HLINE U8_HLINE U8_HLINE U8_HLINE U8_HLINE
		U8_HLINE U8_HLINE U8_HLINE U8_HLINE U8_HLINE U8_HLINE U8_HLINE U8_BTEE
		U8_HLINE U8_HLINE U8_HLINE U8_HLINE U8_HLINE U8_HLINE U8_HLINE U8_HLINE
		U8_HLINE U8_HLINE U8_HLINE U8_HLINE U8_HLINE U8_HLINE U8_HLINE U8_HLINE
		U8_HLINE U8_HLINE U8_HLINE U8_HLINE U8_BTEE  U8_HLINE U8_HLINE U8_HLINE
		U8_HLINE U8_HLINE U8_HLINE U8_HLINE U8_HLINE U8_HLINE U8_HLINE U8_HLINE
		U8_HLINE U8_HLINE U8_HLINE U8_HLINE U8_HLINE U8_HLINE U8_HLINE U8_HLINE
		U8_HLINE U8_HLINE U8_HLINE U8_HLINE U8_HLINE U8_HLINE U8_HLINE U8_HLINE
		"\n"
		"devices/processors hashing (only for totals line), hottest temperature\n"
	);
	wlogprint(
		"hashrates: %ds decaying / all-time average / all-time average (effective)\n"
		, opt_log_interval);
	_wlogprint(
		"A: accepted shares | R: rejected+discarded(% of total)\n"
		"HW: hardware errors / % nonces invalid\n"
		"\n"
		"Press any key to clear"
	);
	
	logwin_update();
	getch();
	
	loginput_mode(0);
}

static void *input_thread(void __maybe_unused *userdata)
{
	RenameThread("input");

	if (!curses_active)
		return NULL;

	while (1) {
		int input;

		input = getch();
		switch (input) {
			case 'h': case 'H': case '?':
			case KEY_F(1):
				show_help();
				break;
		case 'q': case 'Q':
			kill_work();
			return NULL;
		case 'd': case 'D':
			display_options();
			break;
		case 'm': case 'M':
			manage_device();
			break;
		case 'p': case 'P':
			display_pools();
			break;
		case 's': case 'S':
			set_options();
			break;
#ifdef HAVE_CURSES
		case KEY_DOWN:
		{
			const int visible_lines = logcursor - devcursor;
			const int invisible_lines = total_lines - visible_lines;
			if (devsummaryYOffset <= -invisible_lines)
				break;
			devsummaryYOffset -= 2;
		}
		case KEY_UP:
			if (devsummaryYOffset == 0)
				break;
			++devsummaryYOffset;
			refresh_devstatus();
			break;
		case KEY_NPAGE:
		{
			const int visible_lines = logcursor - devcursor;
			const int invisible_lines = total_lines - visible_lines;
			if (devsummaryYOffset - visible_lines <= -invisible_lines)
				devsummaryYOffset = -invisible_lines;
			else
				devsummaryYOffset -= visible_lines;
			refresh_devstatus();
			break;
		}
		case KEY_PPAGE:
		{
			const int visible_lines = logcursor - devcursor;
			if (devsummaryYOffset + visible_lines >= 0)
				devsummaryYOffset = 0;
			else
				devsummaryYOffset += visible_lines;
			refresh_devstatus();
			break;
		}
#endif
		}
		if (opt_realquiet) {
			disable_curses();
			break;
		}
	}

	return NULL;
}
#endif

static void *api_thread(void *userdata)
{
	struct thr_info *mythr = userdata;

	pthread_detach(pthread_self());
	pthread_setcanceltype(PTHREAD_CANCEL_ASYNCHRONOUS, NULL);

	RenameThread("rpc");

	api(api_thr_id);

	mythr->has_pth = false;

	return NULL;
}

void thread_reportin(struct thr_info *thr)
{
	cgtime(&thr->last);
	thr->cgpu->status = LIFE_WELL;
	thr->getwork = 0;
	thr->cgpu->device_last_well = time(NULL);
}

void thread_reportout(struct thr_info *thr)
{
	thr->getwork = time(NULL);
}

static void hashmeter(int thr_id, struct timeval *diff,
		      uint64_t hashes_done)
{
	char logstatusline[256];
	struct timeval temp_tv_end, total_diff;
	double secs;
	double local_secs;
	static double local_mhashes_done = 0;
	double local_mhashes = (double)hashes_done / 1000000.0;
	bool showlog = false;
	char cHr[ALLOC_H2B_NOUNIT+1], aHr[ALLOC_H2B_NOUNIT+1], uHr[ALLOC_H2B_SPACED+3+1];
	char rejpcbuf[6];
	char bnbuf[6];
	struct thr_info *thr;

	/* Update the last time this thread reported in */
	if (thr_id >= 0) {
		thr = get_thread(thr_id);
		cgtime(&(thr->last));
		thr->cgpu->device_last_well = time(NULL);
	}

	secs = (double)diff->tv_sec + ((double)diff->tv_usec / 1000000.0);

	/* So we can call hashmeter from a non worker thread */
	if (thr_id >= 0) {
		struct cgpu_info *cgpu = thr->cgpu;
		int threadobj = cgpu->threads ?: 1;
		double thread_rolling = 0.0;
		int i;

		applog(LOG_DEBUG, "[thread %d: %"PRIu64" hashes, %.1f khash/sec]",
			thr_id, hashes_done, hashes_done / 1000 / secs);

		/* Rolling average for each thread and each device */
		decay_time(&thr->rolling, local_mhashes / secs, secs);
		for (i = 0; i < threadobj; i++)
			thread_rolling += cgpu->thr[i]->rolling;

		mutex_lock(&hash_lock);
		decay_time(&cgpu->rolling, thread_rolling, secs);
		cgpu->total_mhashes += local_mhashes;
		mutex_unlock(&hash_lock);

		// If needed, output detailed, per-device stats
		if (want_per_device_stats) {
			struct timeval now;
			struct timeval elapsed;
			struct timeval *last_msg_tv = opt_show_procs ? &thr->cgpu->last_message_tv : &thr->cgpu->device->last_message_tv;

			cgtime(&now);
			timersub(&now, last_msg_tv, &elapsed);
			if (opt_log_interval <= elapsed.tv_sec) {
				struct cgpu_info *cgpu = thr->cgpu;
				char logline[255];

				*last_msg_tv = now;

				get_statline(logline, sizeof(logline), cgpu);
				if (!curses_active) {
					printf("%s          \r", logline);
					fflush(stdout);
				} else
					applog(LOG_INFO, "%s", logline);
			}
		}
	}

	/* Totals are updated by all threads so can race without locking */
	mutex_lock(&hash_lock);
	cgtime(&temp_tv_end);
	timersub(&temp_tv_end, &total_tv_end, &total_diff);

	total_mhashes_done += local_mhashes;
	local_mhashes_done += local_mhashes;
	/* Only update with opt_log_interval */
	if (total_diff.tv_sec < opt_log_interval)
		goto out_unlock;
	showlog = true;
	cgtime(&total_tv_end);

	local_secs = (double)total_diff.tv_sec + ((double)total_diff.tv_usec / 1000000.0);
	decay_time(&total_rolling, local_mhashes_done / local_secs, local_secs);
	global_hashrate = ((unsigned long long)lround(total_rolling)) * 1000000;

	timersub(&total_tv_end, &total_tv_start, &total_diff);
	total_secs = (double)total_diff.tv_sec +
		((double)total_diff.tv_usec / 1000000.0);

	double wtotal = (total_diff_accepted + total_diff_rejected + total_diff_stale);
	
	multi_format_unit_array2(
		((char*[]){cHr, aHr, uHr}),
		((size_t[]){sizeof(cHr), sizeof(aHr), sizeof(uHr)}),
		true, "h/s", H2B_SHORT,
		3,
		1e6*total_rolling,
		1e6*total_mhashes_done / total_secs,
		utility_to_hashrate(total_diff1 * (wtotal ? (total_diff_accepted / wtotal) : 1) * 60 / total_secs));

	int ui_accepted, ui_rejected, ui_stale;
	if (opt_weighed_stats)
	{
		ui_accepted = total_diff_accepted;
		ui_rejected = total_diff_rejected;
		ui_stale = total_diff_stale;
	}
	else
	{
		ui_accepted = total_accepted;
		ui_rejected = total_rejected;
		ui_stale = total_stale;
	}
	
#ifdef HAVE_CURSES
	if (curses_active_locked()) {
		float temp = 0;
		struct cgpu_info *proc, *last_working_dev = NULL;
		int i, working_devs = 0, working_procs = 0;
		int divx;
		bool bad = false;
		
		// Find the highest temperature of all processors
		for (i = 0; i < total_devices; ++i)
		{
			proc = get_devices(i);
			
			if (proc->temp > temp)
				temp = proc->temp;
			
			if (unlikely(proc->deven == DEV_DISABLED))
				;  // Just need to block it off from both conditions
			else
			if (likely(proc->status == LIFE_WELL && proc->deven == DEV_ENABLED))
			{
				if (proc->rolling > .1)
				{
					++working_procs;
					if (proc->device != last_working_dev)
					{
						++working_devs;
						last_working_dev = proc->device;
					}
				}
			}
			else
				bad = true;
		}
		
		if (working_devs == working_procs)
			snprintf(statusline, sizeof(statusline), "%s%d        ", bad ? U8_BAD_START : "", working_devs);
		else
			snprintf(statusline, sizeof(statusline), "%s%d/%d     ", bad ? U8_BAD_START : "", working_devs, working_procs);
		
		divx = 7;
		if (opt_show_procs && !opt_compact)
			++divx;
		
		if (bad)
		{
			divx += sizeof(U8_BAD_START)-1;
			strcpy(&statusline[divx], U8_BAD_END);
			divx += sizeof(U8_BAD_END)-1;
		}
		
		temperature_column(&statusline[divx], sizeof(statusline)-divx, true, &temp);
		
		format_statline(statusline, sizeof(statusline),
		                cHr, aHr,
		                uHr,
		                ui_accepted,
		                ui_rejected,
		                ui_stale,
		                total_diff_rejected + total_diff_stale, total_diff_accepted,
		                hw_errors,
		                total_bad_diff1, total_bad_diff1 + total_diff1);
		unlock_curses();
	}
#endif
	
	// Add a space
	memmove(&uHr[6], &uHr[5], strlen(&uHr[5]) + 1);
	uHr[5] = ' ';
	
	percentf4(rejpcbuf, sizeof(rejpcbuf), total_diff_rejected + total_diff_stale, total_diff_accepted);
	percentf4(bnbuf, sizeof(bnbuf), total_bad_diff1, total_diff1);
	
	snprintf(logstatusline, sizeof(logstatusline),
	         "%s%ds:%s avg:%s u:%s | A:%d R:%d+%d(%s) HW:%d/%s",
		want_per_device_stats ? "ALL " : "",
		opt_log_interval,
		cHr, aHr,
		uHr,
		ui_accepted,
		ui_rejected,
		ui_stale,
		rejpcbuf,
		hw_errors,
		bnbuf
	);


	local_mhashes_done = 0;
out_unlock:
	mutex_unlock(&hash_lock);

	if (showlog) {
		if (!curses_active) {
			printf("%s          \r", logstatusline);
			fflush(stdout);
		} else
			applog(LOG_INFO, "%s", logstatusline);
	}
}

void hashmeter2(struct thr_info *thr)
{
	struct timeval tv_now, tv_elapsed;
	
	timerclear(&thr->tv_hashes_done);
	
	cgtime(&tv_now);
	timersub(&tv_now, &thr->tv_lastupdate, &tv_elapsed);
	/* Update the hashmeter at most 5 times per second */
	if ((thr->hashes_done && (tv_elapsed.tv_sec > 0 || tv_elapsed.tv_usec > 200000)) ||
	    tv_elapsed.tv_sec >= opt_log_interval) {
		hashmeter(thr->id, &tv_elapsed, thr->hashes_done);
		thr->hashes_done = 0;
		thr->tv_lastupdate = tv_now;
	}
}

static void stratum_share_result(json_t *val, json_t *res_val, json_t *err_val,
				 struct stratum_share *sshare)
{
	struct work *work = sshare->work;

	share_result(val, res_val, err_val, work, false, "");
}

/* Parses stratum json responses and tries to find the id that the request
 * matched to and treat it accordingly. */
bool parse_stratum_response(struct pool *pool, char *s)
{
	json_t *val = NULL, *err_val, *res_val, *id_val;
	struct stratum_share *sshare;
	json_error_t err;
	bool ret = false;
	int id;

	val = JSON_LOADS(s, &err);
	if (!val) {
		applog(LOG_INFO, "JSON decode failed(%d): %s", err.line, err.text);
		goto out;
	}

	res_val = json_object_get(val, "result");
	err_val = json_object_get(val, "error");
	id_val = json_object_get(val, "id");

	if (json_is_null(id_val) || !id_val) {
		char *ss;

		if (err_val)
			ss = json_dumps(err_val, JSON_INDENT(3));
		else
			ss = strdup("(unknown reason)");

		applog(LOG_INFO, "JSON-RPC non method decode failed: %s", ss);

		free(ss);

		goto out;
	}

	if (!json_is_integer(id_val)) {
		if (json_is_string(id_val)
		 && !strncmp(json_string_value(id_val), "txlist", 6))
		{
			const bool is_array = json_is_array(res_val);
			applog(LOG_DEBUG, "Received %s for pool %u job %s",
			       is_array ? "transaction list" : "no-transaction-list response",
			       pool->pool_no, &json_string_value(id_val)[6]);
			if (!is_array)
			{
				// No need to wait for a timeout
				timer_unset(&pool->swork.tv_transparency);
				pool_set_opaque(pool, true);
				goto fishy;
			}
			if (strcmp(json_string_value(id_val) + 6, pool->swork.job_id))
				// We only care about a transaction list for the current job id
				goto fishy;
			
			// Check that the transactions actually hash to the merkle links
			{
				unsigned maxtx = 1 << pool->swork.merkles;
				unsigned mintx = maxtx >> 1;
				--maxtx;
				unsigned acttx = (unsigned)json_array_size(res_val);
				if (acttx < mintx || acttx > maxtx) {
					applog(LOG_WARNING, "Pool %u is sending mismatched block contents to us (%u is not %u-%u)",
					       pool->pool_no, acttx, mintx, maxtx);
					goto fishy;
				}
				// TODO: Check hashes match actual merkle links
			}

			pool_set_opaque(pool, false);
			timer_unset(&pool->swork.tv_transparency);

fishy:
			ret = true;
		}

		goto out;
	}

	id = json_integer_value(id_val);

	mutex_lock(&sshare_lock);
	HASH_FIND_INT(stratum_shares, &id, sshare);
	if (sshare)
		HASH_DEL(stratum_shares, sshare);
	mutex_unlock(&sshare_lock);

	if (!sshare) {
		double pool_diff;

		/* Since the share is untracked, we can only guess at what the
		 * work difficulty is based on the current pool diff. */
		cg_rlock(&pool->data_lock);
		pool_diff = target_diff(pool->swork.target);
		cg_runlock(&pool->data_lock);

		if (json_is_true(res_val)) {
			applog(LOG_NOTICE, "Accepted untracked stratum share from pool %d", pool->pool_no);

			/* We don't know what device this came from so we can't
			 * attribute the work to the relevant cgpu */
			mutex_lock(&stats_lock);
			total_accepted++;
			pool->accepted++;
			total_diff_accepted += pool_diff;
			pool->diff_accepted += pool_diff;
			mutex_unlock(&stats_lock);
		} else {
			applog(LOG_NOTICE, "Rejected untracked stratum share from pool %d", pool->pool_no);

			mutex_lock(&stats_lock);
			total_rejected++;
			pool->rejected++;
			total_diff_rejected += pool_diff;
			pool->diff_rejected += pool_diff;
			mutex_unlock(&stats_lock);
		}
		goto out;
	}
	else {
		mutex_lock(&submitting_lock);
		--total_submitting;
		mutex_unlock(&submitting_lock);
	}
	stratum_share_result(val, res_val, err_val, sshare);
	free_work(sshare->work);
	free(sshare);

	ret = true;
out:
	if (val)
		json_decref(val);

	return ret;
}

static void shutdown_stratum(struct pool *pool)
{
	// Shut down Stratum as if we never had it
	pool->stratum_active = false;
	pool->stratum_init = false;
	pool->has_stratum = false;
	shutdown(pool->sock, SHUT_RDWR);
	free(pool->stratum_url);
	if (pool->sockaddr_url == pool->stratum_url)
		pool->sockaddr_url = NULL;
	pool->stratum_url = NULL;
}

void clear_stratum_shares(struct pool *pool)
{
	int my_mining_threads = mining_threads;  // Cached outside of locking
	struct stratum_share *sshare, *tmpshare;
	struct work *work;
	struct cgpu_info *cgpu;
	double diff_cleared = 0;
	double thr_diff_cleared[my_mining_threads];
	int cleared = 0;
	int thr_cleared[my_mining_threads];
	
	// NOTE: This is per-thread rather than per-device to avoid getting devices lock in stratum_shares loop
	for (int i = 0; i < my_mining_threads; ++i)
	{
		thr_diff_cleared[i] = 0;
		thr_cleared[i] = 0;
	}

	mutex_lock(&sshare_lock);
	HASH_ITER(hh, stratum_shares, sshare, tmpshare) {
		work = sshare->work;
		if (sshare->work->pool == pool && work->thr_id < my_mining_threads) {
			HASH_DEL(stratum_shares, sshare);
			
			sharelog("disconnect", work);
			
			diff_cleared += sshare->work->work_difficulty;
			thr_diff_cleared[work->thr_id] += work->work_difficulty;
			++thr_cleared[work->thr_id];
			free_work(sshare->work);
			free(sshare);
			cleared++;
		}
	}
	mutex_unlock(&sshare_lock);

	if (cleared) {
		applog(LOG_WARNING, "Lost %d shares due to stratum disconnect on pool %d", cleared, pool->pool_no);
		mutex_lock(&stats_lock);
		pool->stale_shares += cleared;
		total_stale += cleared;
		pool->diff_stale += diff_cleared;
		total_diff_stale += diff_cleared;
		for (int i = 0; i < my_mining_threads; ++i)
			if (thr_cleared[i])
			{
				cgpu = get_thr_cgpu(i);
				cgpu->diff_stale += thr_diff_cleared[i];
				cgpu->stale += thr_cleared[i];
			}
		mutex_unlock(&stats_lock);

		mutex_lock(&submitting_lock);
		total_submitting -= cleared;
		mutex_unlock(&submitting_lock);
	}
}

static void resubmit_stratum_shares(struct pool *pool)
{
	struct stratum_share *sshare, *tmpshare;
	struct work *work;
	unsigned resubmitted = 0;

	mutex_lock(&sshare_lock);
	mutex_lock(&submitting_lock);
	HASH_ITER(hh, stratum_shares, sshare, tmpshare) {
		if (sshare->work->pool != pool)
			continue;
		
		HASH_DEL(stratum_shares, sshare);
		
		work = sshare->work;
		DL_APPEND(submit_waiting, work);
		
		free(sshare);
		++resubmitted;
	}
	mutex_unlock(&submitting_lock);
	mutex_unlock(&sshare_lock);

	if (resubmitted) {
		notifier_wake(submit_waiting_notifier);
		applog(LOG_DEBUG, "Resubmitting %u shares due to stratum disconnect on pool %u", resubmitted, pool->pool_no);
	}
}

static void clear_pool_work(struct pool *pool)
{
	struct work *work, *tmp;
	int cleared = 0;

	mutex_lock(stgd_lock);
	HASH_ITER(hh, staged_work, work, tmp) {
		if (work->pool == pool) {
			HASH_DEL(staged_work, work);
			free_work(work);
			cleared++;
			staged_full = false;
		}
	}
	mutex_unlock(stgd_lock);
}

static int cp_prio(void)
{
	int prio;

	cg_rlock(&control_lock);
	prio = currentpool->prio;
	cg_runlock(&control_lock);

	return prio;
}

/* We only need to maintain a secondary pool connection when we need the
 * capacity to get work from the backup pools while still on the primary */
static bool cnx_needed(struct pool *pool)
{
	struct pool *cp;

	if (pool->enabled != POOL_ENABLED)
		return false;

	/* Idle stratum pool needs something to kick it alive again */
	if (pool->has_stratum && pool->idle)
		return true;

	/* Getwork pools without opt_fail_only need backup pools up to be able
	 * to leak shares */
	cp = current_pool();
	if (pool_actively_desired(pool, cp))
		return true;
	if (!pool_localgen(cp) && (!opt_fail_only || !cp->hdr_path))
		return true;

	/* Keep the connection open to allow any stray shares to be submitted
	 * on switching pools for 2 minutes. */
	if (timer_elapsed(&pool->tv_last_work_time, NULL) < 120)
		return true;

	/* If the pool has only just come to life and is higher priority than
	 * the current pool keep the connection open so we can fail back to
	 * it. */
	if (pool_strategy == POOL_FAILOVER && pool->prio < cp_prio())
		return true;

	if (pool_unworkable(cp))
		return true;
	
	/* We've run out of work, bring anything back to life. */
	if (no_work)
		return true;

	return false;
}

static void wait_lpcurrent(struct pool *pool);
static void pool_resus(struct pool *pool);
static void gen_stratum_work(struct pool *pool, struct work *work);

static void stratum_resumed(struct pool *pool)
{
	if (!pool->stratum_notify)
		return;
	if (pool_tclear(pool, &pool->idle)) {
		applog(LOG_INFO, "Stratum connection to pool %d resumed", pool->pool_no);
		pool_resus(pool);
	}
}

static bool supports_resume(struct pool *pool)
{
	bool ret;

	cg_rlock(&pool->data_lock);
	ret = (pool->sessionid != NULL);
	cg_runlock(&pool->data_lock);

	return ret;
}

/* One stratum thread per pool that has stratum waits on the socket checking
 * for new messages and for the integrity of the socket connection. We reset
 * the connection based on the integrity of the receive side only as the send
 * side will eventually expire data it fails to send. */
static void *stratum_thread(void *userdata)
{
	struct pool *pool = (struct pool *)userdata;

	pthread_detach(pthread_self());

	char threadname[20];
	snprintf(threadname, 20, "stratum%u", pool->pool_no);
	RenameThread(threadname);

	srand(time(NULL) + (intptr_t)userdata);

	while (42) {
		struct timeval timeout;
		int sel_ret;
		fd_set rd;
		char *s;
		int sock;

		if (unlikely(!pool->has_stratum))
			break;

		/* Check to see whether we need to maintain this connection
		 * indefinitely or just bring it up when we switch to this
		 * pool */
		while (true)
		{
			sock = pool->sock;
			
			if (sock == INVSOCK)
				applog(LOG_DEBUG, "Pool %u: Invalid socket, suspending",
				       pool->pool_no);
			else
			if (!sock_full(pool) && !cnx_needed(pool))
				applog(LOG_DEBUG, "Pool %u: Connection not needed, suspending",
				       pool->pool_no);
			else
				break;
			
			suspend_stratum(pool);
			clear_stratum_shares(pool);
			clear_pool_work(pool);

			wait_lpcurrent(pool);
			if (!restart_stratum(pool)) {
				pool_died(pool);
				while (!restart_stratum(pool)) {
					if (pool->removed)
						goto out;
					cgsleep_ms(30000);
				}
			}
		}

		FD_ZERO(&rd);
		FD_SET(sock, &rd);
		timeout.tv_sec = 120;
		timeout.tv_usec = 0;

		/* If we fail to receive any notify messages for 2 minutes we
		 * assume the connection has been dropped and treat this pool
		 * as dead */
		if (!sock_full(pool) && (sel_ret = select(sock + 1, &rd, NULL, NULL, &timeout)) < 1) {
			applog(LOG_DEBUG, "Stratum select failed on pool %d with value %d", pool->pool_no, sel_ret);
			s = NULL;
		} else
			s = recv_line(pool);
		if (!s) {
			if (!pool->has_stratum)
				break;

			applog(LOG_NOTICE, "Stratum connection to pool %d interrupted", pool->pool_no);
			pool->getfail_occasions++;
			total_go++;

			mutex_lock(&pool->stratum_lock);
			pool->stratum_active = pool->stratum_notify = false;
			pool->sock = INVSOCK;
			mutex_unlock(&pool->stratum_lock);

			/* If the socket to our stratum pool disconnects, all
			 * submissions need to be discarded or resent. */
			if (!supports_resume(pool))
				clear_stratum_shares(pool);
			else
				resubmit_stratum_shares(pool);
			clear_pool_work(pool);
			if (pool == current_pool())
				restart_threads();

			if (restart_stratum(pool))
				continue;

			shutdown_stratum(pool);
			pool_died(pool);
			break;
		}

		/* Check this pool hasn't died while being a backup pool and
		 * has not had its idle flag cleared */
		stratum_resumed(pool);

		if (!parse_method(pool, s) && !parse_stratum_response(pool, s))
			applog(LOG_INFO, "Unknown stratum msg: %s", s);
		free(s);
		if (pool->swork.clean) {
			struct work *work = make_work();

			/* Generate a single work item to update the current
			 * block database */
			pool->swork.clean = false;
			gen_stratum_work(pool, work);

			/* Try to extract block height from coinbase scriptSig */
			uint8_t *bin_height = &bytes_buf(&pool->swork.coinbase)[4 /*version*/ + 1 /*txin count*/ + 36 /*prevout*/ + 1 /*scriptSig len*/ + 1 /*push opcode*/];
			unsigned char cb_height_sz;
			cb_height_sz = bin_height[-1];
			if (cb_height_sz == 3) {
				// FIXME: The block number will overflow this by AD 2173
				uint32_t block_id = ((uint32_t*)work->data)[1];
				uint32_t height = 0;
				memcpy(&height, bin_height, 3);
				height = le32toh(height);
				have_block_height(block_id, height);
			}

			pool->swork.work_restart_id =
			++pool->work_restart_id;
			pool_update_work_restart_time(pool);
			if (test_work_current(work)) {
				/* Only accept a work update if this stratum
				 * connection is from the current pool */
				struct pool * const cp = current_pool();
				if (pool == cp)
					restart_threads();
				
				applog(
				       ((!opt_quiet_work_updates) && pool_actively_in_use(pool, cp) ? LOG_NOTICE : LOG_DEBUG),
				       "Stratum from pool %d requested work update", pool->pool_no);
			} else
				applog(LOG_NOTICE, "Stratum from pool %d detected new block", pool->pool_no);
			free_work(work);
		}

		if (timer_passed(&pool->swork.tv_transparency, NULL)) {
			// More than 4 timmills past since requested transactions
			timer_unset(&pool->swork.tv_transparency);
			pool_set_opaque(pool, true);
		}
	}

out:
	return NULL;
}

static void init_stratum_thread(struct pool *pool)
{
	have_longpoll = true;

	if (unlikely(pthread_create(&pool->stratum_thread, NULL, stratum_thread, (void *)pool)))
		quit(1, "Failed to create stratum thread");
}

static void *longpoll_thread(void *userdata);

static bool stratum_works(struct pool *pool)
{
	applog(LOG_INFO, "Testing pool %d stratum %s", pool->pool_no, pool->stratum_url);
	if (!extract_sockaddr(pool->stratum_url, &pool->sockaddr_url, &pool->stratum_port))
		return false;

	if (pool->stratum_active)
		return true;
	
	if (!initiate_stratum(pool))
		return false;

	return true;
}

static bool pool_active(struct pool *pool, bool pinging)
{
	struct timeval tv_now, tv_getwork, tv_getwork_reply;
	bool ret = false;
	json_t *val;
	CURL *curl;
	int rolltime;
	char *rpc_req;
	struct work *work;
	enum pool_protocol proto;

	if (pool->stratum_init)
		return pool->stratum_active;
	
	timer_set_now(&tv_now);
	if (timer_isset(&pool->tv_last_work_time) && timer_elapsed(&pool->tv_last_work_time, &tv_now) < 60)
		return true;
	if (pool->idle && timer_elapsed(&pool->tv_idle, &tv_now) < 30)
		return false;
	
		applog(LOG_INFO, "Testing pool %s", pool->rpc_url);

	/* This is the central point we activate stratum when we can */
	curl = curl_easy_init();
	if (unlikely(!curl)) {
		applog(LOG_ERR, "CURL initialisation failed");
		return false;
	}

	if (!(want_gbt || want_getwork))
		goto nohttp;

	work = make_work();

	/* Probe for GBT support on first pass */
	proto = want_gbt ? PLP_GETBLOCKTEMPLATE : PLP_GETWORK;

tryagain:
	rpc_req = prepare_rpc_req_probe(work, proto, NULL);
	work->pool = pool;
	if (!rpc_req)
		goto out;

	pool->probed = false;
	cgtime(&tv_getwork);
	val = json_rpc_call(curl, pool->rpc_url, pool->rpc_userpass, rpc_req,
			true, false, &rolltime, pool, false);
	cgtime(&tv_getwork_reply);

	free(rpc_req);

	/* Detect if a http getwork pool has an X-Stratum header at startup,
	 * and if so, switch to that in preference to getwork if it works */
	if (pool->stratum_url && want_stratum && pool_may_redirect_to(pool, pool->stratum_url) && (pool->has_stratum || stratum_works(pool))) {
		if (!pool->has_stratum) {

		applog(LOG_NOTICE, "Switching pool %d %s to %s", pool->pool_no, pool->rpc_url, pool->stratum_url);
		if (!pool->rpc_url)
			pool->rpc_url = strdup(pool->stratum_url);
		pool->has_stratum = true;

		}

		free_work(work);
		if (val)
			json_decref(val);

retry_stratum:
		curl_easy_cleanup(curl);
		
		/* We create the stratum thread for each pool just after
		 * successful authorisation. Once the init flag has been set
		 * we never unset it and the stratum thread is responsible for
		 * setting/unsetting the active flag */
		bool init = pool_tset(pool, &pool->stratum_init);

		if (!init) {
			bool ret = initiate_stratum(pool) && auth_stratum(pool);

			if (ret)
			{
				detect_algo = 2;
				init_stratum_thread(pool);
			}
			else
				pool_tclear(pool, &pool->stratum_init);
			return ret;
		}
		return pool->stratum_active;
	}
	else if (pool->has_stratum)
		shutdown_stratum(pool);

	if (val) {
		bool rc;
		json_t *res;

		res = json_object_get(val, "result");
		if ((!json_is_object(res)) || (proto == PLP_GETBLOCKTEMPLATE && !json_object_get(res, "bits")))
			goto badwork;

		work->rolltime = rolltime;
		rc = work_decode(pool, work, val);
		if (rc) {
			applog(LOG_DEBUG, "Successfully retrieved and deciphered work from pool %u %s",
			       pool->pool_no, pool->rpc_url);
			work->pool = pool;
			copy_time(&work->tv_getwork, &tv_getwork);
			copy_time(&work->tv_getwork_reply, &tv_getwork_reply);
			work->getwork_mode = GETWORK_MODE_TESTPOOL;
			calc_diff(work, 0);

			update_last_work(work);

			applog(LOG_DEBUG, "Pushing pooltest work to base pool");

			stage_work(work);
			total_getworks++;
			pool->getwork_requested++;
			ret = true;
			cgtime(&pool->tv_idle);
		} else {
badwork:
			json_decref(val);
			applog(LOG_DEBUG, "Successfully retrieved but FAILED to decipher work from pool %u %s",
			       pool->pool_no, pool->rpc_url);
			pool->proto = proto = pool_protocol_fallback(proto);
			if (PLP_NONE != proto)
				goto tryagain;
			free_work(work);
			goto out;
		}
		json_decref(val);

		if (proto != pool->proto) {
			pool->proto = proto;
			applog(LOG_INFO, "Selected %s protocol for pool %u", pool_protocol_name(proto), pool->pool_no);
		}

		if (pool->lp_url)
			goto out;

		/* Decipher the longpoll URL, if any, and store it in ->lp_url */

		const struct blktmpl_longpoll_req *lp;
		if (work->tr && (lp = blktmpl_get_longpoll(work->tr->tmpl))) {
			// NOTE: work_decode takes care of lp id
			pool->lp_url = lp->uri ? absolute_uri(lp->uri, pool->rpc_url) : pool->rpc_url;
			if (!pool->lp_url)
			{
				ret = false;
				goto out;
			}
			pool->lp_proto = PLP_GETBLOCKTEMPLATE;
		}
		else
		if (pool->hdr_path && want_getwork) {
			pool->lp_url = absolute_uri(pool->hdr_path, pool->rpc_url);
			if (!pool->lp_url)
			{
				ret = false;
				goto out;
			}
			pool->lp_proto = PLP_GETWORK;
		} else
			pool->lp_url = NULL;

		if (want_longpoll && !pool->lp_started) {
			pool->lp_started = true;
			if (unlikely(pthread_create(&pool->longpoll_thread, NULL, longpoll_thread, (void *)pool)))
				quit(1, "Failed to create pool longpoll thread");
		}
	} else if (PLP_NONE != (proto = pool_protocol_fallback(proto))) {
		pool->proto = proto;
		goto tryagain;
	} else {
		free_work(work);
nohttp:
		/* If we failed to parse a getwork, this could be a stratum
		 * url without the prefix stratum+tcp:// so let's check it */
		if (extract_sockaddr(pool->rpc_url, &pool->sockaddr_url, &pool->stratum_port) && initiate_stratum(pool)) {
			pool->has_stratum = true;
			goto retry_stratum;
		}
		applog(LOG_DEBUG, "FAILED to retrieve work from pool %u %s",
		       pool->pool_no, pool->rpc_url);
		if (!pinging)
			applog(LOG_WARNING, "Pool %u slow/down or URL or credentials invalid", pool->pool_no);
	}
out:
	curl_easy_cleanup(curl);
	return ret;
}

static void pool_resus(struct pool *pool)
{
	if (pool_strategy == POOL_FAILOVER && pool->prio < cp_prio())
		applog(LOG_WARNING, "Pool %d %s alive, testing stability", pool->pool_no, pool->rpc_url);
	else
		applog(LOG_INFO, "Pool %d %s alive", pool->pool_no, pool->rpc_url);
}

static struct work *hash_pop(void)
{
	struct work *work = NULL, *tmp;
	int hc;
	struct timespec ts;

retry:
	mutex_lock(stgd_lock);
	while (!HASH_COUNT(staged_work))
	{
		if (unlikely(staged_full))
		{
			if (likely(opt_queue < 10 + mining_threads))
			{
				++opt_queue;
				applog(LOG_WARNING, "Staged work underrun; increasing queue minimum to %d", opt_queue);
			}
			else
				applog(LOG_WARNING, "Staged work underrun; not automatically increasing above %d", opt_queue);
			staged_full = false;  // Let it fill up before triggering an underrun again
			no_work = true;
		}
		ts = (struct timespec){ .tv_sec = opt_log_interval, };
		pthread_cond_signal(&gws_cond);
		if (ETIMEDOUT == pthread_cond_timedwait(&getq->cond, stgd_lock, &ts))
		{
			run_cmd(cmd_idle);
			pthread_cond_signal(&gws_cond);
			pthread_cond_wait(&getq->cond, stgd_lock);
		}
	}
	
	no_work = false;

	hc = HASH_COUNT(staged_work);
	/* Find clone work if possible, to allow masters to be reused */
	if (hc > staged_rollable) {
		HASH_ITER(hh, staged_work, work, tmp) {
			if (!work_rollable(work))
				break;
		}
	} else
		work = staged_work;
	
	if (can_roll(work) && should_roll(work))
	{
		// Instead of consuming it, force it to be cloned and grab the clone
		mutex_unlock(stgd_lock);
		clone_available();
		goto retry;
	}
	
	HASH_DEL(staged_work, work);
	if (work_rollable(work))
		staged_rollable--;

	/* Signal the getwork scheduler to look for more work */
	pthread_cond_signal(&gws_cond);

	/* Signal hash_pop again in case there are mutliple hash_pop waiters */
	pthread_cond_signal(&getq->cond);
	mutex_unlock(stgd_lock);
	work->pool->last_work_time = time(NULL);
	cgtime(&work->pool->tv_last_work_time);

	return work;
}

/* Clones work by rolling it if possible, and returning a clone instead of the
 * original work item which gets staged again to possibly be rolled again in
 * the future */
static struct work *clone_work(struct work *work)
{
	int mrs = mining_threads + opt_queue - total_staged();
	struct work *work_clone;
	bool cloned;

	if (mrs < 1)
		return work;

	cloned = false;
	work_clone = make_clone(work);
	while (mrs-- > 0 && can_roll(work) && should_roll(work)) {
		applog(LOG_DEBUG, "Pushing rolled converted work to stage thread");
		stage_work(work_clone);
		roll_work(work);
		work_clone = make_clone(work);
		/* Roll it again to prevent duplicates should this be used
		 * directly later on */
		roll_work(work);
		cloned = true;
	}

	if (cloned) {
		stage_work(work);
		return work_clone;
	}

	free_work(work_clone);

	return work;
}

void gen_hash(unsigned char *data, unsigned char *hash, int len)
{
	unsigned char hash1[32];

	sha256(data, len, hash1);
	sha256(hash1, 32, hash);
}

/* PDiff 1 is a 256 bit unsigned integer of
 * 0x00000000ffffffffffffffffffffffffffffffffffffffffffffffffffffffff
 * so we use a big endian 32 bit unsigned integer positioned at the Nth byte to
 * cover a huge range of difficulty targets, though not all 256 bits' worth */
static void pdiff_target_leadzero(void * const target_p, double diff)
{
	uint8_t *target = target_p;
	diff *= 0x100000000;
	int skip = log2(diff) / 8;
	if (skip)
	{
		if (skip > 0x1c)
			skip = 0x1c;
		diff /= pow(0x100, skip);
		memset(target, 0, skip);
	}
	uint32_t n = 0xffffffff;
	n = (double)n / diff;
	n = htobe32(n);
	memcpy(&target[skip], &n, sizeof(n));
	memset(&target[skip + sizeof(n)], 0xff, 32 - (skip + sizeof(n)));
}

void set_target_to_pdiff(void * const dest_target, const double pdiff)
{
	unsigned char rtarget[32];
	pdiff_target_leadzero(rtarget, pdiff);
	swab256(dest_target, rtarget);
	
	if (opt_debug) {
		char htarget[65];
		bin2hex(htarget, rtarget, 32);
		applog(LOG_DEBUG, "Generated target %s", htarget);
	}
}

void set_target_to_bdiff(void * const dest_target, const double bdiff)
{
	set_target_to_pdiff(dest_target, bdiff_to_pdiff(bdiff));
}

void _test_target(void * const funcp, const char * const funcname, const bool little_endian, const void * const expectp, const double diff)
{
	uint8_t bufr[32], buf[32], expectr[32], expect[32];
	int off;
	void (*func)(void *, double) = funcp;
	
	func(little_endian ? bufr : buf, diff);
	if (little_endian)
		swab256(buf, bufr);
	
	swap32tobe(expect, expectp, 256/32);
	
	// Fuzzy comparison: the first 32 bits set must match, and the actual target must be >= the expected
	for (off = 0; off < 28 && !buf[off]; ++off)
	{}
	
	if (memcmp(&buf[off], &expect[off], 4))
	{
testfail: ;
		char hexbuf[65], expectbuf[65];
		bin2hex(hexbuf, buf, 32);
		bin2hex(expectbuf, expect, 32);
		applogr(, LOG_WARNING, "%s test failed: diff %g got %s (expected %s)",
		        funcname, diff, hexbuf, expectbuf);
	}
	
	if (!little_endian)
		swab256(bufr, buf);
	swab256(expectr, expect);
	
	if (!hash_target_check(expectr, bufr))
		goto testfail;
}

#define TEST_TARGET(func, le, expect, diff)  \
	_test_target(func, #func, le, expect, diff)

void test_target()
{
	uint32_t expect[8] = {0};
	// bdiff 1 should be exactly 00000000ffff0000000006f29cfd29510a6caee84634e86a57257cf03152537f due to floating-point imprecision (pdiff1 / 1.0000152590218966)
	expect[0] = 0x0000ffff;
	TEST_TARGET(set_target_to_bdiff, true, expect, 1./0x10000);
	expect[0] = 0;
	expect[1] = 0xffff0000;
	TEST_TARGET(set_target_to_bdiff, true, expect, 1);
	expect[1] >>= 1;
	TEST_TARGET(set_target_to_bdiff, true, expect, 2);
	expect[1] >>= 3;
	TEST_TARGET(set_target_to_bdiff, true, expect, 0x10);
	expect[1] >>= 4;
	TEST_TARGET(set_target_to_bdiff, true, expect, 0x100);
	
	memset(&expect[1], '\xff', 28);
	expect[0] = 0x0000ffff;
	TEST_TARGET(set_target_to_pdiff, true, expect, 1./0x10000);
	expect[0] = 0;
	TEST_TARGET(set_target_to_pdiff, true, expect, 1);
	expect[1] >>= 1;
	TEST_TARGET(set_target_to_pdiff, true, expect, 2);
	expect[1] >>= 3;
	TEST_TARGET(set_target_to_pdiff, true, expect, 0x10);
	expect[1] >>= 4;
	TEST_TARGET(set_target_to_pdiff, true, expect, 0x100);
}

void stratum_work_cpy(struct stratum_work * const dst, const struct stratum_work * const src)
{
	*dst = *src;
	if (dst->tr)
		tmpl_incref(dst->tr);
	dst->nonce1 = maybe_strdup(src->nonce1);
	dst->job_id = maybe_strdup(src->job_id);
	bytes_cpy(&dst->coinbase, &src->coinbase);
	bytes_cpy(&dst->merkle_bin, &src->merkle_bin);
}

void stratum_work_clean(struct stratum_work * const swork)
{
	if (swork->tr)
		tmpl_decref(swork->tr);
	free(swork->nonce1);
	free(swork->job_id);
	bytes_free(&swork->coinbase);
	bytes_free(&swork->merkle_bin);
}

bool pool_has_usable_swork(const struct pool * const pool)
{
	if (opt_benchmark)
		return true;
	if (pool->swork.tr)
	{
		// GBT
		struct timeval tv_now;
		timer_set_now(&tv_now);
		return blkmk_time_left(pool->swork.tr->tmpl, tv_now.tv_sec);
	}
	return pool->stratum_notify;
}

/* Generates stratum based work based on the most recent notify information
 * from the pool. This will keep generating work while a pool is down so we use
 * other means to detect when the pool has died in stratum_thread */
static void gen_stratum_work(struct pool *pool, struct work *work)
{
	clean_work(work);
	
	cg_wlock(&pool->data_lock);
	pool->swork.data_lock_p = &pool->data_lock;
	
	const int n2size = pool->swork.n2size;
	bytes_resize(&work->nonce2, n2size);
	if (pool->nonce2sz < n2size)
		memset(&bytes_buf(&work->nonce2)[pool->nonce2sz], 0, n2size - pool->nonce2sz);
	memcpy(bytes_buf(&work->nonce2),
#ifdef WORDS_BIGENDIAN
	// NOTE: On big endian, the most significant bits are stored at the end, so skip the LSBs
	       &((char*)&pool->nonce2)[pool->nonce2off],
#else
	       &pool->nonce2,
#endif
	       pool->nonce2sz);
	pool->nonce2++;
	
	work->pool = pool;
	work->work_restart_id = pool->swork.work_restart_id;
	gen_stratum_work2(work, &pool->swork);
	
	cgtime(&work->tv_staged);
}

void gen_stratum_work2(struct work *work, struct stratum_work *swork)
{
	unsigned char *coinbase, merkle_root[32], merkle_sha[64];
	uint8_t *merkle_bin;
	uint32_t *data32, *swap32;
	int i;

	/* Generate coinbase */
	coinbase = bytes_buf(&swork->coinbase);
	memcpy(&coinbase[swork->nonce2_offset], bytes_buf(&work->nonce2), bytes_len(&work->nonce2));

	/* Downgrade to a read lock to read off the variables */
	if (swork->data_lock_p)
		cg_dwlock(swork->data_lock_p);

	/* Generate merkle root */
	gen_hash(coinbase, merkle_root, bytes_len(&swork->coinbase));
	memcpy(merkle_sha, merkle_root, 32);
	merkle_bin = bytes_buf(&swork->merkle_bin);
	for (i = 0; i < swork->merkles; ++i, merkle_bin += 32) {
		memcpy(merkle_sha + 32, merkle_bin, 32);
		gen_hash(merkle_sha, merkle_root, 64);
		memcpy(merkle_sha, merkle_root, 32);
	}
	data32 = (uint32_t *)merkle_sha;
	swap32 = (uint32_t *)merkle_root;
	flip32(swap32, data32);
	
	memcpy(&work->data[0], swork->header1, 36);
	memcpy(&work->data[36], merkle_root, 32);
	*((uint32_t*)&work->data[68]) = htobe32(swork->ntime + timer_elapsed(&swork->tv_received, NULL));
	memcpy(&work->data[72], swork->diffbits, 4);
	memset(&work->data[76], 0, 4);  // nonce
	memcpy(&work->data[80], workpadding_bin, 48);
	
	work->ntime_roll_limits = swork->ntime_roll_limits;

	/* Copy parameters required for share submission */
	memcpy(work->target, swork->target, sizeof(work->target));
	work->job_id = maybe_strdup(swork->job_id);
	work->nonce1 = maybe_strdup(swork->nonce1);
	if (swork->data_lock_p)
		cg_runlock(swork->data_lock_p);

	if (opt_debug)
	{
		char header[161];
		char nonce2hex[(bytes_len(&work->nonce2) * 2) + 1];
		bin2hex(header, work->data, 80);
		bin2hex(nonce2hex, bytes_buf(&work->nonce2), bytes_len(&work->nonce2));
		applog(LOG_DEBUG, "Generated stratum header %s", header);
		applog(LOG_DEBUG, "Work job_id %s nonce2 %s", work->job_id, nonce2hex);
	}

	calc_midstate(work);

	local_work++;
	work->stratum = true;
	work->blk.nonce = 0;
	work->id = total_work++;
	work->longpoll = false;
	work->getwork_mode = GETWORK_MODE_STRATUM;
	calc_diff(work, 0);
}

void request_work(struct thr_info *thr)
{
	struct cgpu_info *cgpu = thr->cgpu;
	struct cgminer_stats *dev_stats = &(cgpu->cgminer_stats);

	/* Tell the watchdog thread this thread is waiting on getwork and
	 * should not be restarted */
	thread_reportout(thr);
	
	// HACK: Since get_work still blocks, reportout all processors dependent on this thread
	for (struct cgpu_info *proc = thr->cgpu->next_proc; proc; proc = proc->next_proc)
	{
		if (proc->threads)
			break;
		thread_reportout(proc->thr[0]);
	}

	cgtime(&dev_stats->_get_start);
}

// FIXME: Make this non-blocking (and remove HACK above)
struct work *get_work(struct thr_info *thr)
{
	const int thr_id = thr->id;
	struct cgpu_info *cgpu = thr->cgpu;
	struct cgminer_stats *dev_stats = &(cgpu->cgminer_stats);
	struct cgminer_stats *pool_stats;
	struct timeval tv_get;
	struct work *work = NULL;

	applog(LOG_DEBUG, "%"PRIpreprv": Popping work from get queue to get work", cgpu->proc_repr);
	while (!work) {
		work = hash_pop();
		if (stale_work(work, false)) {
			staged_full = false;  // It wasn't really full, since it was stale :(
			discard_work(work);
			work = NULL;
			wake_gws();
		}
	}
	last_getwork = time(NULL);
	applog(LOG_DEBUG, "%"PRIpreprv": Got work %d from get queue to get work for thread %d",
	       cgpu->proc_repr, work->id, thr_id);

	work->thr_id = thr_id;
	thread_reportin(thr);
	
	// HACK: Since get_work still blocks, reportin all processors dependent on this thread
	for (struct cgpu_info *proc = thr->cgpu->next_proc; proc; proc = proc->next_proc)
	{
		if (proc->threads)
			break;
		thread_reportin(proc->thr[0]);
	}
	
	work->mined = true;
	work->blk.nonce = 0;

	cgtime(&tv_get);
	timersub(&tv_get, &dev_stats->_get_start, &tv_get);

	timeradd(&tv_get, &dev_stats->getwork_wait, &dev_stats->getwork_wait);
	if (timercmp(&tv_get, &dev_stats->getwork_wait_max, >))
		dev_stats->getwork_wait_max = tv_get;
	if (timercmp(&tv_get, &dev_stats->getwork_wait_min, <))
		dev_stats->getwork_wait_min = tv_get;
	++dev_stats->getwork_calls;

	pool_stats = &(work->pool->cgminer_stats);
	timeradd(&tv_get, &pool_stats->getwork_wait, &pool_stats->getwork_wait);
	if (timercmp(&tv_get, &pool_stats->getwork_wait_max, >))
		pool_stats->getwork_wait_max = tv_get;
	if (timercmp(&tv_get, &pool_stats->getwork_wait_min, <))
		pool_stats->getwork_wait_min = tv_get;
	++pool_stats->getwork_calls;
	
	if (work->work_difficulty < 1)
	{
		if (unlikely(work->work_difficulty < cgpu->min_nonce_diff))
		{
			if (cgpu->min_nonce_diff - work->work_difficulty > 1./0x10000000)
				applog(LOG_WARNING, "%"PRIpreprv": Using work with lower difficulty than device supports",
				       cgpu->proc_repr);
			work->nonce_diff = cgpu->min_nonce_diff;
		}
		else
			work->nonce_diff = work->work_difficulty;
	}
	else
		work->nonce_diff = 1;

	return work;
}

static
void _submit_work_async(struct work *work)
{
	applog(LOG_DEBUG, "Pushing submit work to work thread");
	
	if (opt_benchmark)
	{
		json_t * const jn = json_null();
		rebuild_hash(work);
		share_result(jn, jn, jn, work, false, "");
		free_work(work);
		return;
	}

	mutex_lock(&submitting_lock);
	++total_submitting;
	DL_APPEND(submit_waiting, work);
	mutex_unlock(&submitting_lock);

	notifier_wake(submit_waiting_notifier);
}

/* Submit a copy of the tested, statistic recorded work item asynchronously */
static void submit_work_async2(struct work *work, struct timeval *tv_work_found)
{
	if (tv_work_found)
		copy_time(&work->tv_work_found, tv_work_found);
	
	_submit_work_async(work);
}

void inc_hw_errors3(struct thr_info *thr, const struct work *work, const uint32_t *bad_nonce_p, float nonce_diff)
{
	struct cgpu_info * const cgpu = thr->cgpu;
	
	if (bad_nonce_p)
	{
		if (bad_nonce_p == UNKNOWN_NONCE)
			applog(LOG_DEBUG, "%"PRIpreprv": invalid nonce - HW error",
			       cgpu->proc_repr);
		else
			applog(LOG_DEBUG, "%"PRIpreprv": invalid nonce (%08lx) - HW error",
			       cgpu->proc_repr, (unsigned long)be32toh(*bad_nonce_p));
	}
	
	mutex_lock(&stats_lock);
	hw_errors++;
	++cgpu->hw_errors;
	if (bad_nonce_p)
	{
		total_bad_diff1 += nonce_diff;
		cgpu->bad_diff1 += nonce_diff;
	}
	mutex_unlock(&stats_lock);

	if (thr->cgpu->drv->hw_error)
		thr->cgpu->drv->hw_error(thr);
}

static
bool test_hash(const void * const phash, const float diff)
{
	const uint32_t * const hash = phash;
	if (diff >= 1.)
		// FIXME: > 1 should check more
		return !hash[7];
	
	const uint32_t Htarg = (uint32_t)(0x100000000 * diff) - 1;
	const uint32_t tmp_hash7 = le32toh(hash[7]);
	
	applog(LOG_DEBUG, "htarget %08lx hash %08lx",
				(long unsigned int)Htarg,
				(long unsigned int)tmp_hash7);
	return (tmp_hash7 <= Htarg);
}

enum test_nonce2_result _test_nonce2(struct work *work, uint32_t nonce, bool checktarget)
{
	uint32_t *work_nonce = (uint32_t *)(work->data + 64 + 12);
	*work_nonce = htole32(nonce);

#ifdef USE_SCRYPT
	if (opt_scrypt)
		scrypt_hash_data(work->hash, work->data);
	else
#endif
		hash_data(work->hash, work->data);
	
	if (!test_hash(work->hash, work->nonce_diff))
		return TNR_BAD;
	
	if (checktarget && !hash_target_check_v(work->hash, work->target))
	{
		bool high_hash = true;
		struct pool * const pool = work->pool;
		if (pool->stratum_active)
		{
			// Some stratum pools are buggy and expect difficulty changes to be immediate retroactively, so if the target has changed, check and submit just in case
			if (memcmp(pool->swork.target, work->target, sizeof(work->target)))
			{
				applog(LOG_DEBUG, "Stratum pool %u target has changed since work job issued, checking that too",
				       pool->pool_no);
				if (hash_target_check_v(work->hash, pool->swork.target))
					high_hash = false;
			}
		}
		if (high_hash)
			return TNR_HIGH;
	}
	
	return TNR_GOOD;
}

/* Returns true if nonce for work was a valid share */
bool submit_nonce(struct thr_info *thr, struct work *work, uint32_t nonce)
{
	return submit_noffset_nonce(thr, work, nonce, 0);
}

/* Allows drivers to submit work items where the driver has changed the ntime
 * value by noffset. Must be only used with a work protocol that does not ntime
 * roll itself intrinsically to generate work (eg stratum). We do not touch
 * the original work struct, but the copy of it only. */
bool submit_noffset_nonce(struct thr_info *thr, struct work *work_in, uint32_t nonce,
			  int noffset)
{
	struct work *work = make_work();
	_copy_work(work, work_in, noffset);
	
	uint32_t *work_nonce = (uint32_t *)(work->data + 64 + 12);
	struct timeval tv_work_found;
	enum test_nonce2_result res;
	bool ret = true;

	thread_reportout(thr);

	cgtime(&tv_work_found);
	*work_nonce = htole32(nonce);
	work->thr_id = thr->id;

	/* Do one last check before attempting to submit the work */
	/* Side effect: sets work->data and work->hash for us */
	res = test_nonce2(work, nonce);
	
	if (unlikely(res == TNR_BAD))
		{
			inc_hw_errors(thr, work, nonce);
			ret = false;
			goto out;
		}
	
	mutex_lock(&stats_lock);
	total_diff1       += work->nonce_diff;
	thr ->cgpu->diff1 += work->nonce_diff;
	work->pool->diff1 += work->nonce_diff;
	thr->cgpu->last_device_valid_work = time(NULL);
	mutex_unlock(&stats_lock);
	
	if (noncelog_file)
		noncelog(work);
	
	if (res == TNR_HIGH)
	{
			// Share above target, normal
			/* Check the diff of the share, even if it didn't reach the
			 * target, just to set the best share value if it's higher. */
			share_diff(work);
			goto out;
	}
	
	submit_work_async2(work, &tv_work_found);
	work = NULL;  // Taken by submit_work_async2
out:
	if (work)
		free_work(work);
	thread_reportin(thr);

	return ret;
}

bool abandon_work(struct work *work, struct timeval *wdiff, uint64_t hashes)
{
	if (wdiff->tv_sec > opt_scantime ||
	    work->blk.nonce >= 0xfffffffe - hashes ||
	    hashes >= 0xfffffffe ||
	    stale_work(work, false))
		return true;
	return false;
}

void __thr_being_msg(int prio, struct thr_info *thr, const char *being)
{
	struct cgpu_info *proc = thr->cgpu;
	
	if (proc->threads > 1)
		applog(prio, "%"PRIpreprv" (thread %d) %s", proc->proc_repr, thr->id, being);
	else
		applog(prio, "%"PRIpreprv" %s", proc->proc_repr, being);
}

// Called by asynchronous minerloops, when they find their processor should be disabled
void mt_disable_start(struct thr_info *mythr)
{
	struct cgpu_info *cgpu = mythr->cgpu;
	struct device_drv *drv = cgpu->drv;
	
	if (drv->thread_disable)
		drv->thread_disable(mythr);
	
	hashmeter2(mythr);
	__thr_being_msg(LOG_WARNING, mythr, "being disabled");
	mythr->rolling = mythr->cgpu->rolling = 0;
	thread_reportout(mythr);
	mythr->_mt_disable_called = true;
}

/* Put a new unqueued work item in cgpu->unqueued_work under cgpu->qlock till
 * the driver tells us it's full so that it may extract the work item using
 * the get_queued() function which adds it to the hashtable on
 * cgpu->queued_work. */
static void fill_queue(struct thr_info *mythr, struct cgpu_info *cgpu, struct device_drv *drv, const int thr_id)
{
	thread_reportout(mythr);
	do {
		bool need_work;

		/* Do this lockless just to know if we need more unqueued work. */
		need_work = (!cgpu->unqueued_work);

		/* get_work is a blocking function so do it outside of lock
		 * to prevent deadlocks with other locks. */
		if (need_work) {
			struct work *work = get_work(mythr);

			wr_lock(&cgpu->qlock);
			/* Check we haven't grabbed work somehow between
			 * checking and picking up the lock. */
			if (likely(!cgpu->unqueued_work))
				cgpu->unqueued_work = work;
			else
				need_work = false;
			wr_unlock(&cgpu->qlock);

			if (unlikely(!need_work))
				discard_work(work);
		}
		/* The queue_full function should be used by the driver to
		 * actually place work items on the physical device if it
		 * does have a queue. */
	} while (drv->queue_full && !drv->queue_full(cgpu));
}

/* Add a work item to a cgpu's queued hashlist */
void __add_queued(struct cgpu_info *cgpu, struct work *work)
{
	cgpu->queued_count++;
	HASH_ADD_INT(cgpu->queued_work, id, work);
}

/* This function is for retrieving one work item from the unqueued pointer and
 * adding it to the hashtable of queued work. Code using this function must be
 * able to handle NULL as a return which implies there is no work available. */
struct work *get_queued(struct cgpu_info *cgpu)
{
	struct work *work = NULL;

	wr_lock(&cgpu->qlock);
	if (cgpu->unqueued_work) {
		work = cgpu->unqueued_work;
		if (unlikely(stale_work(work, false))) {
			discard_work(work);
			work = NULL;
			wake_gws();
		} else
			__add_queued(cgpu, work);
		cgpu->unqueued_work = NULL;
	}
	wr_unlock(&cgpu->qlock);

	return work;
}

void add_queued(struct cgpu_info *cgpu, struct work *work)
{
	wr_lock(&cgpu->qlock);
	__add_queued(cgpu, work);
	wr_unlock(&cgpu->qlock);
}

/* Get fresh work and add it to cgpu's queued hashlist */
struct work *get_queue_work(struct thr_info *thr, struct cgpu_info *cgpu, int thr_id)
{
	struct work *work = get_work(thr);

	add_queued(cgpu, work);
	return work;
}

/* This function is for finding an already queued work item in the
 * given que hashtable. Code using this function must be able
 * to handle NULL as a return which implies there is no matching work.
 * The calling function must lock access to the que if it is required.
 * The common values for midstatelen, offset, datalen are 32, 64, 12 */
struct work *__find_work_bymidstate(struct work *que, char *midstate, size_t midstatelen, char *data, int offset, size_t datalen)
{
	struct work *work, *tmp, *ret = NULL;

	HASH_ITER(hh, que, work, tmp) {
		if (memcmp(work->midstate, midstate, midstatelen) == 0 &&
		    memcmp(work->data + offset, data, datalen) == 0) {
			ret = work;
			break;
		}
	}

	return ret;
}

/* This function is for finding an already queued work item in the
 * device's queued_work hashtable. Code using this function must be able
 * to handle NULL as a return which implies there is no matching work.
 * The common values for midstatelen, offset, datalen are 32, 64, 12 */
struct work *find_queued_work_bymidstate(struct cgpu_info *cgpu, char *midstate, size_t midstatelen, char *data, int offset, size_t datalen)
{
	struct work *ret;

	rd_lock(&cgpu->qlock);
	ret = __find_work_bymidstate(cgpu->queued_work, midstate, midstatelen, data, offset, datalen);
	rd_unlock(&cgpu->qlock);

	return ret;
}

struct work *clone_queued_work_bymidstate(struct cgpu_info *cgpu, char *midstate, size_t midstatelen, char *data, int offset, size_t datalen)
{
	struct work *work, *ret = NULL;

	rd_lock(&cgpu->qlock);
	work = __find_work_bymidstate(cgpu->queued_work, midstate, midstatelen, data, offset, datalen);
	if (work)
		ret = copy_work(work);
	rd_unlock(&cgpu->qlock);

	return ret;
}

void __work_completed(struct cgpu_info *cgpu, struct work *work)
{
	cgpu->queued_count--;
	HASH_DEL(cgpu->queued_work, work);
}
/* This function should be used by queued device drivers when they're sure
 * the work struct is no longer in use. */
void work_completed(struct cgpu_info *cgpu, struct work *work)
{
	wr_lock(&cgpu->qlock);
	__work_completed(cgpu, work);
	wr_unlock(&cgpu->qlock);

	free_work(work);
}

/* Combines find_queued_work_bymidstate and work_completed in one function
 * withOUT destroying the work so the driver must free it. */
struct work *take_queued_work_bymidstate(struct cgpu_info *cgpu, char *midstate, size_t midstatelen, char *data, int offset, size_t datalen)
{
	struct work *work;

	wr_lock(&cgpu->qlock);
	work = __find_work_bymidstate(cgpu->queued_work, midstate, midstatelen, data, offset, datalen);
	if (work)
		__work_completed(cgpu, work);
	wr_unlock(&cgpu->qlock);

	return work;
}

static void flush_queue(struct cgpu_info *cgpu)
{
	struct work *work = NULL;

	wr_lock(&cgpu->qlock);
	work = cgpu->unqueued_work;
	cgpu->unqueued_work = NULL;
	wr_unlock(&cgpu->qlock);

	if (work) {
		free_work(work);
		applog(LOG_DEBUG, "Discarded queued work item");
	}
}

/* This version of hash work is for devices that are fast enough to always
 * perform a full nonce range and need a queue to maintain the device busy.
 * Work creation and destruction is not done from within this function
 * directly. */
void hash_queued_work(struct thr_info *mythr)
{
	const long cycle = opt_log_interval / 5 ? : 1;
	struct timeval tv_start = {0, 0}, tv_end;
	struct cgpu_info *cgpu = mythr->cgpu;
	struct device_drv *drv = cgpu->drv;
	const int thr_id = mythr->id;
	int64_t hashes_done = 0;

	if (unlikely(cgpu->deven != DEV_ENABLED))
		mt_disable(mythr);
	
	while (likely(!cgpu->shutdown)) {
		struct timeval diff;
		int64_t hashes;

		fill_queue(mythr, cgpu, drv, thr_id);

		thread_reportin(mythr);
		hashes = drv->scanwork(mythr);

		/* Reset the bool here in case the driver looks for it
		 * synchronously in the scanwork loop. */
		mythr->work_restart = false;

		if (unlikely(hashes == -1 )) {
			applog(LOG_ERR, "%s %d failure, disabling!", drv->name, cgpu->device_id);
			cgpu->deven = DEV_DISABLED;
			dev_error(cgpu, REASON_THREAD_ZERO_HASH);
			mt_disable(mythr);
		}

		hashes_done += hashes;
		cgtime(&tv_end);
		timersub(&tv_end, &tv_start, &diff);
		if (diff.tv_sec >= cycle) {
			hashmeter(thr_id, &diff, hashes_done);
			hashes_done = 0;
			copy_time(&tv_start, &tv_end);
		}

		if (unlikely(mythr->pause || cgpu->deven != DEV_ENABLED))
			mt_disable(mythr);

		if (unlikely(mythr->work_restart)) {
			flush_queue(cgpu);
			if (drv->flush_work)
				drv->flush_work(cgpu);
		}
	}
	// cgpu->deven = DEV_DISABLED; set in miner_thread
}

// Called by minerloop, when it is re-enabling a processor
void mt_disable_finish(struct thr_info *mythr)
{
	struct device_drv *drv = mythr->cgpu->drv;
	
	thread_reportin(mythr);
	__thr_being_msg(LOG_WARNING, mythr, "being re-enabled");
	if (drv->thread_enable)
		drv->thread_enable(mythr);
	mythr->_mt_disable_called = false;
}

// Called by synchronous minerloops, when they find their processor should be disabled
// Calls mt_disable_start, waits until it's re-enabled, then calls mt_disable_finish
void mt_disable(struct thr_info *mythr)
{
	const struct cgpu_info * const cgpu = mythr->cgpu;
	mt_disable_start(mythr);
	applog(LOG_DEBUG, "Waiting for wakeup notification in miner thread");
	do {
		notifier_read(mythr->notifier);
	} while (mythr->pause || cgpu->deven != DEV_ENABLED);
	mt_disable_finish(mythr);
}


enum {
	STAT_SLEEP_INTERVAL		= 1,
	STAT_CTR_INTERVAL		= 10000000,
	FAILURE_INTERVAL		= 30,
};

/* Stage another work item from the work returned in a longpoll */
static void convert_to_work(json_t *val, int rolltime, struct pool *pool, struct work *work, struct timeval *tv_lp, struct timeval *tv_lp_reply)
{
	bool rc;

	work->rolltime = rolltime;
	rc = work_decode(pool, work, val);
	if (unlikely(!rc)) {
		applog(LOG_ERR, "Could not convert longpoll data to work");
		free_work(work);
		return;
	}
	total_getworks++;
	pool->getwork_requested++;
	work->pool = pool;
	copy_time(&work->tv_getwork, tv_lp);
	copy_time(&work->tv_getwork_reply, tv_lp_reply);
	calc_diff(work, 0);

	if (pool->enabled == POOL_REJECTING)
		work->mandatory = true;

	work->longpoll = true;
	work->getwork_mode = GETWORK_MODE_LP;

	update_last_work(work);

	/* We'll be checking this work item twice, but we already know it's
	 * from a new block so explicitly force the new block detection now
	 * rather than waiting for it to hit the stage thread. This also
	 * allows testwork to know whether LP discovered the block or not. */
	test_work_current(work);

	/* Don't use backup LPs as work if we have failover-only enabled. Use
	 * the longpoll work from a pool that has been rejecting shares as a
	 * way to detect when the pool has recovered.
	 */
	if (pool != current_pool() && opt_fail_only && pool->enabled != POOL_REJECTING) {
		free_work(work);
		return;
	}

	work = clone_work(work);

	applog(LOG_DEBUG, "Pushing converted work to stage thread");

	stage_work(work);
	applog(LOG_DEBUG, "Converted longpoll data to work");
}

/* If we want longpoll, enable it for the chosen default pool, or, if
 * the pool does not support longpoll, find the first one that does
 * and use its longpoll support */
static struct pool *select_longpoll_pool(struct pool *cp)
{
	int i;

	if (cp->lp_url)
		return cp;
	for (i = 0; i < total_pools; i++) {
		struct pool *pool = pools[i];

		if (pool->has_stratum || pool->lp_url)
			return pool;
	}
	return NULL;
}

/* This will make the longpoll thread wait till it's the current pool, or it
 * has been flagged as rejecting, before attempting to open any connections.
 */
static void wait_lpcurrent(struct pool *pool)
{
	while (!cnx_needed(pool))
	{
		mutex_lock(&lp_lock);
		pthread_cond_wait(&lp_cond, &lp_lock);
		mutex_unlock(&lp_lock);
	}
}

static curl_socket_t save_curl_socket(void *vpool, __maybe_unused curlsocktype purpose, struct curl_sockaddr *addr) {
	struct pool *pool = vpool;
	curl_socket_t sock = socket(addr->family, addr->socktype, addr->protocol);
	pool->lp_socket = sock;
	return sock;
}

static void *longpoll_thread(void *userdata)
{
	struct pool *cp = (struct pool *)userdata;
	/* This *pool is the source of the actual longpoll, not the pool we've
	 * tied it to */
	struct timeval start, reply, end;
	struct pool *pool = NULL;
	char threadname[20];
	CURL *curl = NULL;
	int failures = 0;
	char *lp_url;
	int rolltime;

#ifndef HAVE_PTHREAD_CANCEL
	pthread_setcanceltype(PTHREAD_CANCEL_ASYNCHRONOUS, NULL);
#endif

	snprintf(threadname, 20, "longpoll%u", cp->pool_no);
	RenameThread(threadname);

	curl = curl_easy_init();
	if (unlikely(!curl)) {
		applog(LOG_ERR, "CURL initialisation failed");
		return NULL;
	}

retry_pool:
	pool = select_longpoll_pool(cp);
	if (!pool) {
		applog(LOG_WARNING, "No suitable long-poll found for %s", cp->rpc_url);
		while (!pool) {
			cgsleep_ms(60000);
			pool = select_longpoll_pool(cp);
		}
	}

	if (pool->has_stratum) {
		applog(LOG_WARNING, "Block change for %s detection via %s stratum",
		       cp->rpc_url, pool->rpc_url);
		goto out;
	}

	/* Any longpoll from any pool is enough for this to be true */
	have_longpoll = true;

	wait_lpcurrent(cp);

	{
		lp_url = pool->lp_url;
		if (cp == pool)
			applog(LOG_WARNING, "Long-polling activated for %s (%s)", lp_url, pool_protocol_name(pool->lp_proto));
		else
			applog(LOG_WARNING, "Long-polling activated for %s via %s (%s)", cp->rpc_url, lp_url, pool_protocol_name(pool->lp_proto));
	}

	while (42) {
		json_t *val, *soval;

		struct work *work = make_work();
		char *lpreq;
		lpreq = prepare_rpc_req(work, pool->lp_proto, pool->lp_id);
		work->pool = pool;
		if (!lpreq)
		{
			free_work(work);
			goto lpfail;
		}

		wait_lpcurrent(cp);

		cgtime(&start);

		/* Longpoll connections can be persistent for a very long time
		 * and any number of issues could have come up in the meantime
		 * so always establish a fresh connection instead of relying on
		 * a persistent one. */
		curl_easy_setopt(curl, CURLOPT_FRESH_CONNECT, 1);
		curl_easy_setopt(curl, CURLOPT_OPENSOCKETFUNCTION, save_curl_socket);
		curl_easy_setopt(curl, CURLOPT_OPENSOCKETDATA, pool);
		val = json_rpc_call(curl, lp_url, pool->rpc_userpass,
				    lpreq, false, true, &rolltime, pool, false);
		pool->lp_socket = CURL_SOCKET_BAD;

		cgtime(&reply);

		free(lpreq);

		if (likely(val)) {
			soval = json_object_get(json_object_get(val, "result"), "submitold");
			if (soval)
				pool->submit_old = json_is_true(soval);
			else
				pool->submit_old = false;
			convert_to_work(val, rolltime, pool, work, &start, &reply);
			failures = 0;
			json_decref(val);
		} else {
			/* Some pools regularly drop the longpoll request so
			 * only see this as longpoll failure if it happens
			 * immediately and just restart it the rest of the
			 * time. */
			cgtime(&end);
			free_work(work);
			if (end.tv_sec - start.tv_sec > 30)
				continue;
			if (failures == 1)
				applog(LOG_WARNING, "longpoll failed for %s, retrying every 30s", lp_url);
lpfail:
			cgsleep_ms(30000);
		}

		if (pool != cp) {
			pool = select_longpoll_pool(cp);
			if (pool->has_stratum) {
				applog(LOG_WARNING, "Block change for %s detection via %s stratum",
				       cp->rpc_url, pool->rpc_url);
				break;
			}
			if (unlikely(!pool))
				goto retry_pool;
		}

		if (unlikely(pool->removed))
			break;
	}

out:
	curl_easy_cleanup(curl);

	return NULL;
}

static void stop_longpoll(void)
{
	int i;
	
	want_longpoll = false;
	for (i = 0; i < total_pools; ++i)
	{
		struct pool *pool = pools[i];
		
		if (unlikely(!pool->lp_started))
			continue;
		
		pool->lp_started = false;
		pthread_cancel(pool->longpoll_thread);
	}
	have_longpoll = false;
}

static void start_longpoll(void)
{
	int i;
	
	want_longpoll = true;
	for (i = 0; i < total_pools; ++i)
	{
		struct pool *pool = pools[i];
		
		if (unlikely(pool->removed || pool->lp_started || !pool->lp_url))
			continue;
		
		pool->lp_started = true;
		if (unlikely(pthread_create(&pool->longpoll_thread, NULL, longpoll_thread, (void *)pool)))
			quit(1, "Failed to create pool longpoll thread");
	}
}

void reinit_device(struct cgpu_info *cgpu)
{
	if (cgpu->drv->reinit_device)
		cgpu->drv->reinit_device(cgpu);
}

static struct timeval rotate_tv;

/* We reap curls if they are unused for over a minute */
static void reap_curl(struct pool *pool)
{
	struct curl_ent *ent, *iter;
	struct timeval now;
	int reaped = 0;

	cgtime(&now);

	mutex_lock(&pool->pool_lock);
	LL_FOREACH_SAFE(pool->curllist, ent, iter) {
		if (pool->curls < 2)
			break;
		if (now.tv_sec - ent->tv.tv_sec > 300) {
			reaped++;
			pool->curls--;
			LL_DELETE(pool->curllist, ent);
			curl_easy_cleanup(ent->curl);
			free(ent);
		}
	}
	mutex_unlock(&pool->pool_lock);

	if (reaped)
		applog(LOG_DEBUG, "Reaped %d curl%s from pool %d", reaped, reaped > 1 ? "s" : "", pool->pool_no);
}

static void *watchpool_thread(void __maybe_unused *userdata)
{
	int intervals = 0;

#ifndef HAVE_PTHREAD_CANCEL
	pthread_setcanceltype(PTHREAD_CANCEL_ASYNCHRONOUS, NULL);
#endif

	RenameThread("watchpool");

	while (42) {
		struct timeval now;
		int i;

		if (++intervals > 20)
			intervals = 0;
		cgtime(&now);

		for (i = 0; i < total_pools; i++) {
			struct pool *pool = pools[i];

			if (!opt_benchmark)
				reap_curl(pool);

			/* Get a rolling utility per pool over 10 mins */
			if (intervals > 19) {
				int shares = pool->diff1 - pool->last_shares;

				pool->last_shares = pool->diff1;
				pool->utility = (pool->utility + (double)shares * 0.63) / 1.63;
				pool->shares = pool->utility;
			}

			if (pool->enabled == POOL_DISABLED)
				continue;

			/* Don't start testing any pools if the test threads
			 * from startup are still doing their first attempt. */
			if (unlikely(pool->testing)) {
				pthread_join(pool->test_thread, NULL);
			}

			/* Test pool is idle once every minute */
			if (pool->idle && now.tv_sec - pool->tv_idle.tv_sec > 30) {
				cgtime(&pool->tv_idle);
				if (pool_active(pool, true) && pool_tclear(pool, &pool->idle))
					pool_resus(pool);
			}

			/* Only switch pools if the failback pool has been
			 * alive for more than 5 minutes (default) to prevent
			 * intermittently failing pools from being used. */
			if (!pool->idle && pool_strategy == POOL_FAILOVER && pool->prio < cp_prio() &&
			    now.tv_sec - pool->tv_idle.tv_sec > opt_fail_switch_delay) {
				if (opt_fail_switch_delay % 60)
					applog(LOG_WARNING, "Pool %d %s stable for %d second%s",
					       pool->pool_no, pool->rpc_url,
					       opt_fail_switch_delay,
					       (opt_fail_switch_delay == 1 ? "" : "s"));
				else
					applog(LOG_WARNING, "Pool %d %s stable for %d minute%s",
					       pool->pool_no, pool->rpc_url,
					       opt_fail_switch_delay / 60,
					       (opt_fail_switch_delay == 60 ? "" : "s"));
				switch_pools(NULL);
			}
		}

		if (current_pool()->idle)
			switch_pools(NULL);

		if (pool_strategy == POOL_ROTATE && now.tv_sec - rotate_tv.tv_sec > 60 * opt_rotate_period) {
			cgtime(&rotate_tv);
			switch_pools(NULL);
		}

		cgsleep_ms(30000);
			
	}
	return NULL;
}

void mt_enable(struct thr_info *thr)
{
	applog(LOG_DEBUG, "Waking up thread %d", thr->id);
	notifier_wake(thr->notifier);
}

void proc_enable(struct cgpu_info *cgpu)
{
	int j;

	cgpu->deven = DEV_ENABLED;
	for (j = cgpu->threads ?: 1; j--; )
		mt_enable(cgpu->thr[j]);
}

#define device_recovered(cgpu)  proc_enable(cgpu)

void cgpu_set_defaults(struct cgpu_info * const cgpu)
{
	struct string_elist *setstr_elist;
	const char *p, *p2;
	char replybuf[0x2000];
	size_t L;
	DL_FOREACH(opt_set_device_list, setstr_elist)
	{
		const char * const setstr = setstr_elist->string;
		p = strchr(setstr, ':');
		if (!p)
			p = setstr;
		{
			L = p - setstr;
			char pattern[L + 1];
			if (L)
				memcpy(pattern, setstr, L);
			pattern[L] = '\0';
			if (!cgpu_match(pattern, cgpu))
				continue;
		}
		
		applog(LOG_DEBUG, "%"PRIpreprv": %s: Matched with set default: %s",
		       cgpu->proc_repr, __func__, setstr);
		
		if (p[0] == ':')
			++p;
		p2 = strchr(p, '=');
		if (!p2)
		{
			L = strlen(p);
			p2 = "";
		}
		else
		{
			L = p2 - p;
			++p2;
		}
		char opt[L + 1];
		if (L)
			memcpy(opt, p, L);
		opt[L] = '\0';
		
		L = strlen(p2);
		char setval[L + 1];
		if (L)
			memcpy(setval, p2, L);
		setval[L] = '\0';
		
		enum bfg_set_device_replytype success;
		p = proc_set_device(cgpu, opt, setval, replybuf, &success);
		switch (success)
		{
			case SDR_OK:
				applog(LOG_DEBUG, "%"PRIpreprv": Applied rule %s%s%s",
				       cgpu->proc_repr, setstr,
				       p ? ": " : "", p ?: "");
				break;
			case SDR_ERR:
			case SDR_HELP:
			case SDR_UNKNOWN:
				applog(LOG_DEBUG, "%"PRIpreprv": Applying rule %s: %s",
				       cgpu->proc_repr, setstr, p);
				break;
			case SDR_AUTO:
			case SDR_NOSUPP:
				applog(LOG_WARNING, "%"PRIpreprv": set_device is not implemented (trying to apply rule: %s)",
				       cgpu->proc_repr, setstr);
		}
	}
	cgpu->already_set_defaults = true;
}

void drv_set_defaults(const struct device_drv * const drv, const void *datap, void *userp, const char * const devpath, const char * const serial, const int mode)
{
	struct device_drv dummy_drv = *drv;
	struct cgpu_info dummy_cgpu = {
		.drv = &dummy_drv,
		.device = &dummy_cgpu,
		.device_id = -1,
		.proc_id = -1,
		.device_data = userp,
		.device_path = devpath,
		.dev_serial = serial,
	};
	strcpy(dummy_cgpu.proc_repr, drv->name);
	switch (mode)
	{
		case 0:
			dummy_drv.set_device = datap;
			break;
		case 1:
			dummy_drv.set_device = NULL;
			dummy_cgpu.set_device_funcs = datap;
			break;
	}
	cgpu_set_defaults(&dummy_cgpu);
}

/* Makes sure the hashmeter keeps going even if mining threads stall, updates
 * the screen at regular intervals, and restarts threads if they appear to have
 * died. */
#define WATCHDOG_SICK_TIME		60
#define WATCHDOG_DEAD_TIME		600
#define WATCHDOG_SICK_COUNT		(WATCHDOG_SICK_TIME/WATCHDOG_INTERVAL)
#define WATCHDOG_DEAD_COUNT		(WATCHDOG_DEAD_TIME/WATCHDOG_INTERVAL)

static void *watchdog_thread(void __maybe_unused *userdata)
{
	const unsigned int interval = WATCHDOG_INTERVAL;
	struct timeval zero_tv;

#ifndef HAVE_PTHREAD_CANCEL
	pthread_setcanceltype(PTHREAD_CANCEL_ASYNCHRONOUS, NULL);
#endif

	RenameThread("watchdog");

	memset(&zero_tv, 0, sizeof(struct timeval));
	cgtime(&rotate_tv);

	while (1) {
		int i;
		struct timeval now;

		sleep(interval);

		discard_stale();

		hashmeter(-1, &zero_tv, 0);

#ifdef HAVE_CURSES
		const int ts = total_staged();
		if (curses_active_locked()) {
			change_logwinsize();
			curses_print_status(ts);
			_refresh_devstatus(true);
			touchwin(logwin);
			wrefresh(logwin);
			unlock_curses();
		}
#endif

		cgtime(&now);

		if (!sched_paused && !should_run()) {
			applog(LOG_WARNING, "Pausing execution as per stop time %02d:%02d scheduled",
			       schedstop.tm.tm_hour, schedstop.tm.tm_min);
			if (!schedstart.enable) {
				quit(0, "Terminating execution as planned");
				break;
			}

			applog(LOG_WARNING, "Will restart execution as scheduled at %02d:%02d",
			       schedstart.tm.tm_hour, schedstart.tm.tm_min);
			sched_paused = true;

			rd_lock(&mining_thr_lock);
			for (i = 0; i < mining_threads; i++)
				mining_thr[i]->pause = true;
			rd_unlock(&mining_thr_lock);
		} else if (sched_paused && should_run()) {
			applog(LOG_WARNING, "Restarting execution as per start time %02d:%02d scheduled",
				schedstart.tm.tm_hour, schedstart.tm.tm_min);
			if (schedstop.enable)
				applog(LOG_WARNING, "Will pause execution as scheduled at %02d:%02d",
					schedstop.tm.tm_hour, schedstop.tm.tm_min);
			sched_paused = false;

			for (i = 0; i < mining_threads; i++) {
				struct thr_info *thr;

				thr = get_thread(i);
				thr->pause = false;
			}
			
			for (i = 0; i < total_devices; ++i)
			{
				struct cgpu_info *cgpu = get_devices(i);
				
				/* Don't touch disabled devices */
				if (cgpu->deven == DEV_DISABLED)
					continue;
				proc_enable(cgpu);
			}
		}

		for (i = 0; i < total_devices; ++i) {
			struct cgpu_info *cgpu = get_devices(i);
			if (!cgpu->disable_watchdog)
				bfg_watchdog(cgpu, &now);
		}
	}

	return NULL;
}

void bfg_watchdog(struct cgpu_info * const cgpu, struct timeval * const tvp_now)
{
			struct thr_info *thr = cgpu->thr[0];
			enum dev_enable *denable;
			char *dev_str = cgpu->proc_repr;

			if (likely(drv_ready(cgpu)))
			{
				if (unlikely(!cgpu->already_set_defaults))
					cgpu_set_defaults(cgpu);
				if (cgpu->drv->get_stats)
					cgpu->drv->get_stats(cgpu);
			}

			denable = &cgpu->deven;

			if (cgpu->drv->watchdog)
				cgpu->drv->watchdog(cgpu, tvp_now);
			
			/* Thread is disabled */
			if (*denable == DEV_DISABLED)
				return;
			else
			if (*denable == DEV_RECOVER_ERR) {
				if (opt_restart && timer_elapsed(&cgpu->tv_device_last_not_well, NULL) > cgpu->reinit_backoff) {
					applog(LOG_NOTICE, "Attempting to reinitialize %s",
					       dev_str);
					if (cgpu->reinit_backoff < 300)
						cgpu->reinit_backoff *= 2;
					device_recovered(cgpu);
				}
				return;
			}
			else
			if (*denable == DEV_RECOVER) {
				if (opt_restart && cgpu->temp < cgpu->targettemp) {
					applog(LOG_NOTICE, "%s recovered to temperature below target, re-enabling",
					       dev_str);
					device_recovered(cgpu);
				}
				dev_error_update(cgpu, REASON_DEV_THERMAL_CUTOFF);
				return;
			}
			else
			if (cgpu->temp > cgpu->cutofftemp)
			{
				applog(LOG_WARNING, "%s hit thermal cutoff limit at %dC, disabling!",
				       dev_str, (int)cgpu->temp);
				*denable = DEV_RECOVER;

				dev_error(cgpu, REASON_DEV_THERMAL_CUTOFF);
				run_cmd(cmd_idle);
			}

			if (thr->getwork) {
				if (cgpu->status == LIFE_WELL && thr->getwork < tvp_now->tv_sec - opt_log_interval) {
					int thrid;
					bool cgpu_idle = true;
					thr->rolling = 0;
					for (thrid = 0; thrid < cgpu->threads; ++thrid)
						if (!cgpu->thr[thrid]->getwork)
							cgpu_idle = false;
					if (cgpu_idle) {
						cgpu->rolling = 0;
						cgpu->status = LIFE_WAIT;
					}
				}
				return;
			}
			else if (cgpu->status == LIFE_WAIT)
				cgpu->status = LIFE_WELL;

#ifdef WANT_CPUMINE
			if (!strcmp(cgpu->drv->dname, "cpu"))
				return;
#endif
			if (cgpu->status != LIFE_WELL && (tvp_now->tv_sec - thr->last.tv_sec < WATCHDOG_SICK_TIME)) {
				if (likely(cgpu->status != LIFE_INIT && cgpu->status != LIFE_INIT2))
				applog(LOG_ERR, "%s: Recovered, declaring WELL!", dev_str);
				cgpu->status = LIFE_WELL;
				cgpu->device_last_well = time(NULL);
			} else if (cgpu->status == LIFE_WELL && (tvp_now->tv_sec - thr->last.tv_sec > WATCHDOG_SICK_TIME)) {
				thr->rolling = cgpu->rolling = 0;
				cgpu->status = LIFE_SICK;
				applog(LOG_ERR, "%s: Idle for more than 60 seconds, declaring SICK!", dev_str);
				cgtime(&thr->sick);

				dev_error(cgpu, REASON_DEV_SICK_IDLE_60);
				run_cmd(cmd_sick);
				
				if (opt_restart && cgpu->drv->reinit_device) {
					applog(LOG_ERR, "%s: Attempting to restart", dev_str);
					reinit_device(cgpu);
				}
			} else if (cgpu->status == LIFE_SICK && (tvp_now->tv_sec - thr->last.tv_sec > WATCHDOG_DEAD_TIME)) {
				cgpu->status = LIFE_DEAD;
				applog(LOG_ERR, "%s: Not responded for more than 10 minutes, declaring DEAD!", dev_str);
				cgtime(&thr->sick);

				dev_error(cgpu, REASON_DEV_DEAD_IDLE_600);
				run_cmd(cmd_dead);
			} else if (tvp_now->tv_sec - thr->sick.tv_sec > 60 &&
				   (cgpu->status == LIFE_SICK || cgpu->status == LIFE_DEAD)) {
				/* Attempt to restart a GPU that's sick or dead once every minute */
				cgtime(&thr->sick);
				if (opt_restart)
					reinit_device(cgpu);
			}
}

static void log_print_status(struct cgpu_info *cgpu)
{
	char logline[255];

	get_statline(logline, sizeof(logline), cgpu);
	applog(LOG_WARNING, "%s", logline);
}

void print_summary(void)
{
	struct timeval diff;
	int hours, mins, secs, i;
	double utility, efficiency = 0.0;
	char xfer[(ALLOC_H2B_SPACED*2)+4+1], bw[(ALLOC_H2B_SPACED*2)+6+1];
	int pool_secs;

	timersub(&total_tv_end, &total_tv_start, &diff);
	hours = diff.tv_sec / 3600;
	mins = (diff.tv_sec % 3600) / 60;
	secs = diff.tv_sec % 60;

	utility = total_accepted / total_secs * 60;
	efficiency = total_bytes_xfer ? total_diff_accepted * 2048. / total_bytes_xfer : 0.0;

	applog(LOG_WARNING, "\nSummary of runtime statistics:\n");
	applog(LOG_WARNING, "Started at %s", datestamp);
	if (total_pools == 1)
		applog(LOG_WARNING, "Pool: %s", pools[0]->rpc_url);
#ifdef WANT_CPUMINE
	if (opt_n_threads > 0)
		applog(LOG_WARNING, "CPU hasher algorithm used: %s", algo_names[opt_algo]);
#endif
	applog(LOG_WARNING, "Runtime: %d hrs : %d mins : %d secs", hours, mins, secs);
	applog(LOG_WARNING, "Average hashrate: %.1f Megahash/s", total_mhashes_done / total_secs);
	applog(LOG_WARNING, "Solved blocks: %d", found_blocks);
	applog(LOG_WARNING, "Best share difficulty: %s", best_share);
	applog(LOG_WARNING, "Share submissions: %d", total_accepted + total_rejected);
	applog(LOG_WARNING, "Accepted shares: %d", total_accepted);
	applog(LOG_WARNING, "Rejected shares: %d + %d stale (%.2f%%)",
	       total_rejected, total_stale,
	       (float)(total_rejected + total_stale) / (float)(total_rejected + total_stale + total_accepted)
	);
	applog(LOG_WARNING, "Accepted difficulty shares: %1.f", total_diff_accepted);
	applog(LOG_WARNING, "Rejected difficulty shares: %1.f", total_diff_rejected);
	applog(LOG_WARNING, "Hardware errors: %d", hw_errors);
	applog(LOG_WARNING, "Network transfer: %s  (%s)",
	       multi_format_unit2(xfer, sizeof(xfer), true, "B", H2B_SPACED, " / ", 2,
	                         (float)total_bytes_rcvd,
	                         (float)total_bytes_sent),
	       multi_format_unit2(bw, sizeof(bw), true, "B/s", H2B_SPACED, " / ", 2,
	                         (float)(total_bytes_rcvd / total_secs),
	                         (float)(total_bytes_sent / total_secs)));
	applog(LOG_WARNING, "Efficiency (accepted shares * difficulty / 2 KB): %.2f", efficiency);
	applog(LOG_WARNING, "Utility (accepted shares / min): %.2f/min\n", utility);

	applog(LOG_WARNING, "Unable to get work from server occasions: %d", total_go);
	applog(LOG_WARNING, "Work items generated locally: %d", local_work);
	applog(LOG_WARNING, "Submitting work remotely delay occasions: %d", total_ro);
	applog(LOG_WARNING, "New blocks detected on network: %d\n", new_blocks);

	if (total_pools > 1) {
		for (i = 0; i < total_pools; i++) {
			struct pool *pool = pools[i];

			applog(LOG_WARNING, "Pool: %s", pool->rpc_url);
			if (pool->solved)
				applog(LOG_WARNING, "SOLVED %d BLOCK%s!", pool->solved, pool->solved > 1 ? "S" : "");
			applog(LOG_WARNING, " Share submissions: %d", pool->accepted + pool->rejected);
			applog(LOG_WARNING, " Accepted shares: %d", pool->accepted);
			applog(LOG_WARNING, " Rejected shares: %d + %d stale (%.2f%%)",
			       pool->rejected, pool->stale_shares,
			       (float)(pool->rejected + pool->stale_shares) / (float)(pool->rejected + pool->stale_shares + pool->accepted)
			);
			applog(LOG_WARNING, " Accepted difficulty shares: %1.f", pool->diff_accepted);
			applog(LOG_WARNING, " Rejected difficulty shares: %1.f", pool->diff_rejected);
			pool_secs = timer_elapsed(&pool->cgminer_stats.start_tv, NULL);
			applog(LOG_WARNING, " Network transfer: %s  (%s)",
			       multi_format_unit2(xfer, sizeof(xfer), true, "B", H2B_SPACED, " / ", 2,
			                         (float)pool->cgminer_pool_stats.net_bytes_received,
			                         (float)pool->cgminer_pool_stats.net_bytes_sent),
			       multi_format_unit2(bw, sizeof(bw), true, "B/s", H2B_SPACED, " / ", 2,
			                         (float)(pool->cgminer_pool_stats.net_bytes_received / pool_secs),
			                         (float)(pool->cgminer_pool_stats.net_bytes_sent / pool_secs)));
			uint64_t pool_bytes_xfer = pool->cgminer_pool_stats.net_bytes_received + pool->cgminer_pool_stats.net_bytes_sent;
			efficiency = pool_bytes_xfer ? pool->diff_accepted * 2048. / pool_bytes_xfer : 0.0;
			applog(LOG_WARNING, " Efficiency (accepted * difficulty / 2 KB): %.2f", efficiency);

			applog(LOG_WARNING, " Items worked on: %d", pool->works);
			applog(LOG_WARNING, " Unable to get work from server occasions: %d", pool->getfail_occasions);
			applog(LOG_WARNING, " Submitting work remotely delay occasions: %d\n", pool->remotefail_occasions);
		}
	}

	if (opt_quit_summary != BQS_NONE)
	{
		if (opt_quit_summary == BQS_DETAILED)
			include_serial_in_statline = true;
		applog(LOG_WARNING, "Summary of per device statistics:\n");
		for (i = 0; i < total_devices; ++i) {
			struct cgpu_info *cgpu = get_devices(i);
			
			if (!cgpu->proc_id)
			{
				// Device summary line
				opt_show_procs = false;
				log_print_status(cgpu);
				opt_show_procs = true;
			}
			if ((opt_quit_summary == BQS_PROCS || opt_quit_summary == BQS_DETAILED) && cgpu->procs > 1)
				log_print_status(cgpu);
		}
	}

	if (opt_shares) {
		applog(LOG_WARNING, "Mined %g accepted shares of %g requested\n", total_diff_accepted, opt_shares);
		if (opt_shares > total_diff_accepted)
			applog(LOG_WARNING, "WARNING - Mined only %g shares of %g requested.", total_diff_accepted, opt_shares);
	}
	applog(LOG_WARNING, " ");

	fflush(stderr);
	fflush(stdout);
}

void _bfg_clean_up(bool restarting)
{
#ifdef HAVE_OPENCL
	clear_adl(nDevs);
#endif
#ifdef HAVE_LIBUSB
	if (likely(have_libusb))
        libusb_exit(NULL);
#endif

	cgtime(&total_tv_end);
#ifdef WIN32
	timeEndPeriod(1);
#endif
	if (!restarting) {
		/* Attempting to disable curses or print a summary during a
		 * restart can lead to a deadlock. */
#ifdef HAVE_CURSES
		disable_curses();
#endif
		if (!opt_realquiet && successful_connect)
			print_summary();
	}

	if (opt_n_threads > 0)
		free(cpus);

	curl_global_cleanup();
	
#ifdef WIN32
	WSACleanup();
#endif
}

void _quit(int status)
{
	if (status) {
		const char *ev = getenv("__BFGMINER_SEGFAULT_ERRQUIT");
		if (unlikely(ev && ev[0] && ev[0] != '0')) {
			int *p = NULL;
			// NOTE debugger can bypass with: p = &p
			*p = status;  // Segfault, hopefully dumping core
		}
	}

#if defined(unix) || defined(__APPLE__)
	if (forkpid > 0) {
		kill(forkpid, SIGTERM);
		forkpid = 0;
	}
#endif

	exit(status);
}

#ifdef HAVE_CURSES
char *curses_input(const char *query)
{
	char *input;

	echo();
	input = malloc(255);
	if (!input)
		quit(1, "Failed to malloc input");
	leaveok(logwin, false);
	wlogprint("%s:\n", query);
	wgetnstr(logwin, input, 255);
	if (!strlen(input))
	{
		free(input);
		input = NULL;
	}
	leaveok(logwin, true);
	noecho();
	return input;
}
#endif

static bool pools_active = false;

static void *test_pool_thread(void *arg)
{
	struct pool *pool = (struct pool *)arg;

	if (pool_active(pool, false)) {
		pool_tset(pool, &pool->lagging);
		pool_tclear(pool, &pool->idle);
		bool first_pool = false;

		cg_wlock(&control_lock);
		if (!pools_active) {
			currentpool = pool;
			if (pool->pool_no != 0)
				first_pool = true;
			pools_active = true;
		}
		cg_wunlock(&control_lock);

		if (unlikely(first_pool))
			applog(LOG_NOTICE, "Switching to pool %d %s - first alive pool", pool->pool_no, pool->rpc_url);
		else
			applog(LOG_NOTICE, "Pool %d %s alive", pool->pool_no, pool->rpc_url);

		switch_pools(NULL);
	} else
		pool_died(pool);

	pool->testing = false;
	return NULL;
}

/* Always returns true that the pool details were added unless we are not
 * live, implying this is the only pool being added, so if no pools are
 * active it returns false. */
bool add_pool_details(struct pool *pool, bool live, char *url, char *user, char *pass)
{
	size_t siz;

	pool->rpc_url = url;
	pool->rpc_user = user;
	pool->rpc_pass = pass;
	siz = strlen(pool->rpc_user) + strlen(pool->rpc_pass) + 2;
	pool->rpc_userpass = malloc(siz);
	if (!pool->rpc_userpass)
		quit(1, "Failed to malloc userpass");
	snprintf(pool->rpc_userpass, siz, "%s:%s", pool->rpc_user, pool->rpc_pass);

	pool->testing = true;
	pool->idle = true;
	enable_pool(pool);

	pthread_create(&pool->test_thread, NULL, test_pool_thread, (void *)pool);
	if (!live) {
		pthread_join(pool->test_thread, NULL);
		return pools_active;
	}
	return true;
}

#ifdef HAVE_CURSES
static bool input_pool(bool live)
{
	char *url = NULL, *user = NULL, *pass = NULL;
	struct pool *pool;
	bool ret = false;

	immedok(logwin, true);
	wlogprint("Input server details.\n");

	url = curses_input("URL");
	if (!url)
		goto out;

	user = curses_input("Username");
	if (!user)
		goto out;

	pass = curses_input("Password");
	if (!pass)
		pass = calloc(1, 1);

	pool = add_pool();

	if (!detect_stratum(pool, url) && strncmp(url, "http://", 7) &&
	    strncmp(url, "https://", 8)) {
		char *httpinput;

		httpinput = malloc(256);
		if (!httpinput)
			quit(1, "Failed to malloc httpinput");
		strcpy(httpinput, "http://");
		strncat(httpinput, url, 248);
		free(url);
		url = httpinput;
	}

	ret = add_pool_details(pool, live, url, user, pass);
out:
	immedok(logwin, false);

	if (!ret) {
		if (url)
			free(url);
		if (user)
			free(user);
		if (pass)
			free(pass);
	}
	return ret;
}
#endif

#if defined(unix) || defined(__APPLE__)
static void fork_monitor()
{
	// Make a pipe: [readFD, writeFD]
	int pfd[2];
	int r = pipe(pfd);

	if (r < 0) {
		perror("pipe - failed to create pipe for --monitor");
		exit(1);
	}

	// Make stderr write end of pipe
	fflush(stderr);
	r = dup2(pfd[1], 2);
	if (r < 0) {
		perror("dup2 - failed to alias stderr to write end of pipe for --monitor");
		exit(1);
	}
	r = close(pfd[1]);
	if (r < 0) {
		perror("close - failed to close write end of pipe for --monitor");
		exit(1);
	}

	// Don't allow a dying monitor to kill the main process
	sighandler_t sr0 = signal(SIGPIPE, SIG_IGN);
	sighandler_t sr1 = signal(SIGPIPE, SIG_IGN);
	if (SIG_ERR == sr0 || SIG_ERR == sr1) {
		perror("signal - failed to edit signal mask for --monitor");
		exit(1);
	}

	// Fork a child process
	forkpid = fork();
	if (forkpid < 0) {
		perror("fork - failed to fork child process for --monitor");
		exit(1);
	}

	// Child: launch monitor command
	if (0 == forkpid) {
		// Make stdin read end of pipe
		r = dup2(pfd[0], 0);
		if (r < 0) {
			perror("dup2 - in child, failed to alias read end of pipe to stdin for --monitor");
			exit(1);
		}
		close(pfd[0]);
		if (r < 0) {
			perror("close - in child, failed to close read end of  pipe for --monitor");
			exit(1);
		}

		// Launch user specified command
		execl("/bin/bash", "/bin/bash", "-c", opt_stderr_cmd, (char*)NULL);
		perror("execl - in child failed to exec user specified command for --monitor");
		exit(1);
	}

	// Parent: clean up unused fds and bail
	r = close(pfd[0]);
	if (r < 0) {
		perror("close - failed to close read end of pipe for --monitor");
		exit(1);
	}
}
#endif // defined(unix)

#ifdef HAVE_CURSES
#ifdef USE_UNICODE
static
wchar_t select_unicode_char(const wchar_t *opt)
{
	for ( ; *opt; ++opt)
		if (iswprint(*opt))
			return *opt;
	return '?';
}
#endif

void enable_curses(void) {
	int x;
	__maybe_unused int y;

	lock_curses();
	if (curses_active) {
		unlock_curses();
		return;
	}

#ifdef USE_UNICODE
	if (use_unicode)
	{
		setlocale(LC_CTYPE, "");
		if (iswprint(0xb0))
			have_unicode_degrees = true;
		unicode_micro = select_unicode_char(L"\xb5\u03bcu");
	}
#endif
	mainwin = initscr();
	start_color();
#if defined(PDCURSES) || defined(NCURSES_VERSION)
	if (ERR != use_default_colors())
		default_bgcolor = -1;
#endif
	if (has_colors() && ERR != init_pair(1, COLOR_WHITE, COLOR_BLUE))
	{
		menu_attr = COLOR_PAIR(1);
		if (ERR != init_pair(2, COLOR_RED, default_bgcolor))
			attr_bad |= COLOR_PAIR(2);
	}
	keypad(mainwin, true);
	getmaxyx(mainwin, y, x);
	statuswin = newwin(logstart, x, 0, 0);
	leaveok(statuswin, true);
	// For whatever reason, PDCurses crashes if the logwin is initialized to height y-logcursor
	// We resize the window later anyway, so just start it off at 1 :)
	logwin = newwin(1, 0, logcursor, 0);
	idlok(logwin, true);
	scrollok(logwin, true);
	leaveok(logwin, true);
	cbreak();
	noecho();
	nonl();
	curses_active = true;
	statusy = logstart;
	unlock_curses();
}
#endif

/* TODO: fix need a dummy CPU device_drv even if no support for CPU mining */
#ifndef WANT_CPUMINE
struct device_drv cpu_drv;
struct device_drv cpu_drv = {
	.name = "CPU",
};
#endif

static int cgminer_id_count = 0;
static int device_line_id_count;

void register_device(struct cgpu_info *cgpu)
{
	cgpu->deven = DEV_ENABLED;

	wr_lock(&devices_lock);
	devices[cgpu->cgminer_id = cgminer_id_count++] = cgpu;
	wr_unlock(&devices_lock);

	if (!cgpu->proc_id)
		cgpu->device_line_id = device_line_id_count++;
	mining_threads += cgpu->threads ?: 1;
#ifdef HAVE_CURSES
	adj_width(mining_threads, &dev_width);
#endif

	rwlock_init(&cgpu->qlock);
	cgpu->queued_work = NULL;
}

struct _cgpu_devid_counter {
	char name[4];
	int lastid;
	UT_hash_handle hh;
};

void renumber_cgpu(struct cgpu_info *cgpu)
{
	static struct _cgpu_devid_counter *devids = NULL;
	struct _cgpu_devid_counter *d;
	
	HASH_FIND_STR(devids, cgpu->drv->name, d);
	if (d)
		cgpu->device_id = ++d->lastid;
	else {
		d = malloc(sizeof(*d));
		memcpy(d->name, cgpu->drv->name, sizeof(d->name));
		cgpu->device_id = d->lastid = 0;
		HASH_ADD_STR(devids, name, d);
	}
	
	// Build repr strings
	sprintf(cgpu->dev_repr, "%s%2u", cgpu->drv->name, cgpu->device_id % 100);
	sprintf(cgpu->dev_repr_ns, "%s%u", cgpu->drv->name, cgpu->device_id % 100);
	strcpy(cgpu->proc_repr, cgpu->dev_repr);
	sprintf(cgpu->proc_repr_ns, "%s%u", cgpu->drv->name, cgpu->device_id);
	
	const int lpcount = cgpu->procs;
	if (lpcount > 1)
	{
		int ns;
		struct cgpu_info *slave;
		int lpdigits = 1;
		for (int i = lpcount; i > 26 && lpdigits < 3; i /= 26)
			++lpdigits;
		
		memset(&cgpu->proc_repr[5], 'a', lpdigits);
		cgpu->proc_repr[5 + lpdigits] = '\0';
		ns = strlen(cgpu->proc_repr_ns);
		strcpy(&cgpu->proc_repr_ns[ns], &cgpu->proc_repr[5]);
		
		slave = cgpu;
		for (int i = 1; i < lpcount; ++i)
		{
			slave = slave->next_proc;
			strcpy(slave->proc_repr, cgpu->proc_repr);
			strcpy(slave->proc_repr_ns, cgpu->proc_repr_ns);
			for (int x = i, y = lpdigits; --y, x; x /= 26)
			{
				slave->proc_repr_ns[ns + y] =
				slave->proc_repr[5 + y] += (x % 26);
			}
		}
	}
}

static bool my_blkmaker_sha256_callback(void *digest, const void *buffer, size_t length)
{
	sha256(buffer, length, digest);
	return true;
}

static
int drv_algo_check(const struct device_drv * const drv)
{
	const int algomatch = opt_scrypt ? POW_SCRYPT : POW_SHA256D;
	const supported_algos_t algos = drv->supported_algos ?: POW_SHA256D;
	return (algos & algomatch);
}

#ifndef HAVE_PTHREAD_CANCEL
extern void setup_pthread_cancel_workaround();
extern struct sigaction pcwm_orig_term_handler;
#endif

bool bfg_need_detect_rescan;
extern void probe_device(struct lowlevel_device_info *);
static void schedule_rescan(const struct timeval *);

static
void drv_detect_all()
{
	bool rescanning = false;
rescan:
	bfg_need_detect_rescan = false;
	
#ifdef HAVE_BFG_LOWLEVEL
	struct lowlevel_device_info * const infolist = lowlevel_scan(), *info, *infotmp;
	
	LL_FOREACH_SAFE(infolist, info, infotmp)
		probe_device(info);
	LL_FOREACH_SAFE(infolist, info, infotmp)
		pthread_join(info->probe_pth, NULL);
#endif
	
	struct driver_registration *reg, *tmp;
	BFG_FOREACH_DRIVER_BY_PRIORITY(reg, tmp)
	{
		const struct device_drv * const drv = reg->drv;
		if (!(drv_algo_check(drv) && drv->drv_detect))
			continue;
		
		drv->drv_detect();
	}

#ifdef HAVE_BFG_LOWLEVEL
	lowlevel_scan_free();
#endif
	
	if (bfg_need_detect_rescan)
	{
		if (rescanning)
		{
			applog(LOG_DEBUG, "Device rescan requested a second time, delaying");
			struct timeval tv_when;
			timer_set_delay_from_now(&tv_when, rescan_delay_ms * 1000);
			schedule_rescan(&tv_when);
		}
		else
		{
			rescanning = true;
			applog(LOG_DEBUG, "Device rescan requested");
			goto rescan;
		}
	}
}

static
void allocate_cgpu(struct cgpu_info *cgpu, unsigned int *kp)
{
	struct thr_info *thr;
	int j;
	
	struct device_drv *api = cgpu->drv;
	cgpu->cgminer_stats.getwork_wait_min.tv_sec = MIN_SEC_UNSET;
	
	int threadobj = cgpu->threads;
	if (!threadobj)
		// Create a fake thread object to handle hashmeter etc
		threadobj = 1;
	cgpu->thr = calloc(threadobj + 1, sizeof(*cgpu->thr));
	cgpu->thr[threadobj] = NULL;
	cgpu->status = LIFE_INIT;
	
	if (opt_devices_enabled_list)
	{
		struct string_elist *enablestr_elist;
		cgpu->deven = DEV_DISABLED;
		DL_FOREACH(opt_devices_enabled_list, enablestr_elist)
		{
			const char * const enablestr = enablestr_elist->string;
			if (cgpu_match(enablestr, cgpu))
			{
				cgpu->deven = DEV_ENABLED;
				break;
			}
		}
	}

	cgpu->max_hashes = 0;
	BFGINIT(cgpu->min_nonce_diff, 1);
	
	BFGINIT(cgpu->cutofftemp, opt_cutofftemp);
	BFGINIT(cgpu->targettemp, cgpu->cutofftemp - 6);

	// Setup thread structs before starting any of the threads, in case they try to interact
	for (j = 0; j < threadobj; ++j, ++*kp) {
		thr = get_thread(*kp);
		thr->id = *kp;
		thr->cgpu = cgpu;
		thr->device_thread = j;
		thr->work_restart_notifier[1] = INVSOCK;
		thr->mutex_request[1] = INVSOCK;
		thr->_job_transition_in_progress = true;
		timerclear(&thr->tv_morework);

		thr->scanhash_working = true;
		thr->hashes_done = 0;
		timerclear(&thr->tv_hashes_done);
		cgtime(&thr->tv_lastupdate);
		thr->tv_poll.tv_sec = -1;
		thr->_max_nonce = api->can_limit_work ? api->can_limit_work(thr) : 0xffffffff;

		cgpu->thr[j] = thr;
	}
	
	if (!cgpu->device->threads)
		notifier_init_invalid(cgpu->thr[0]->notifier);
	else
	if (!cgpu->threads)
		memcpy(&cgpu->thr[0]->notifier, &cgpu->device->thr[0]->notifier, sizeof(cgpu->thr[0]->notifier));
	else
	for (j = 0; j < cgpu->threads; ++j)
	{
		thr = cgpu->thr[j];
		notifier_init(thr->notifier);
	}
}

static
void start_cgpu(struct cgpu_info *cgpu)
{
	struct thr_info *thr;
	int j;
	
	for (j = 0; j < cgpu->threads; ++j) {
		thr = cgpu->thr[j];

		/* Enable threads for devices set not to mine but disable
		 * their queue in case we wish to enable them later */
		if (cgpu->drv->thread_prepare && !cgpu->drv->thread_prepare(thr))
			continue;

		thread_reportout(thr);

		if (unlikely(thr_info_create(thr, NULL, miner_thread, thr)))
			quit(1, "thread %d create failed", thr->id);
		
		notifier_wake(thr->notifier);
	}
	if (cgpu->deven == DEV_ENABLED)
		proc_enable(cgpu);
}

static
void _scan_serial(void *p)
{
	const char *s = p;
	struct string_elist *iter, *tmp;
	struct string_elist *orig_scan_devices = scan_devices;
	
	if (s)
	{
		// Make temporary scan_devices list
		scan_devices = NULL;
		string_elist_add("noauto", &scan_devices);
		add_serial(s);
	}
	
	drv_detect_all();
	
	if (s)
	{
		DL_FOREACH_SAFE(scan_devices, iter, tmp)
		{
			string_elist_del(&scan_devices, iter);
		}
		scan_devices = orig_scan_devices;
	}
}

#ifdef HAVE_BFG_LOWLEVEL
static
bool _probe_device_match(const struct lowlevel_device_info * const info, const char * const ser)
{
	if (!(false
		|| (info->serial && !strcasecmp(ser, info->serial))
		|| (info->path   && !strcasecmp(ser, info->path  ))
		|| (info->devid  && !strcasecmp(ser, info->devid ))
	))
	{
		char *devid = devpath_to_devid(ser);
		if (!devid)
			return false;
		const bool different = strcmp(info->devid, devid);
		free(devid);
		if (different)
			return false;
	}
	return true;
}

static
const struct device_drv *_probe_device_find_drv(const char * const _dname, const size_t dnamelen)
{
	struct driver_registration *dreg;
	char dname[dnamelen];
	int i;
	
	for (i = 0; i < dnamelen; ++i)
		dname[i] = tolower(_dname[i]);
	BFG_FIND_DRV_BY_DNAME(dreg, dname, dnamelen);
	if (!dreg)
	{
		for (i = 0; i < dnamelen; ++i)
			dname[i] = toupper(_dname[i]);
		BFG_FIND_DRV_BY_NAME(dreg, dname, dnamelen);
		if (!dreg)
			return NULL;
	}
	
	if (!drv_algo_check(dreg->drv))
		return NULL;
	
	return dreg->drv;
}

static
void *probe_device_thread(void *p)
{
	struct lowlevel_device_info * const infolist = p;
	struct lowlevel_device_info *info = infolist;
	bool request_rescan = false;
	
	{
		char threadname[5 + strlen(info->devid) + 1];
		sprintf(threadname, "probe_%s", info->devid);
		RenameThread(threadname);
	}
	
	// If already in use, ignore
	if (bfg_claim_any(NULL, NULL, info->devid))
		applogr(NULL, LOG_DEBUG, "%s: \"%s\" already in use",
		        __func__, info->product);
	
	// if lowlevel device matches specific user assignment, probe requested driver(s)
	struct string_elist *sd_iter, *sd_tmp;
	struct driver_registration *dreg, *dreg_tmp;
	DL_FOREACH_SAFE(scan_devices, sd_iter, sd_tmp)
	{
		const char * const dname = sd_iter->string;
		const char * const colon = strpbrk(dname, ":@");
		if (!(colon && colon != dname))
			continue;
		const char * const ser = &colon[1];
		LL_FOREACH2(infolist, info, same_devid_next)
		{
			if (!_probe_device_match(info, ser))
				continue;
			const size_t dnamelen = (colon - dname);
			const struct device_drv * const drv = _probe_device_find_drv(dname, dnamelen);
			if (!(drv && drv->lowl_probe && drv_algo_check(drv)))
				continue;
			if (drv->lowl_probe(info))
				return NULL;
			else
			if (opt_hotplug)
				request_rescan = true;
		}
	}
	
	// probe driver(s) with auto enabled and matching VID/PID/Product/etc of device
	BFG_FOREACH_DRIVER_BY_PRIORITY(dreg, dreg_tmp)
	{
		const struct device_drv * const drv = dreg->drv;
		
		if (!drv_algo_check(drv))
			continue;
		
		// Check for "noauto" flag
		// NOTE: driver-specific configuration overrides general
		bool doauto = true;
		DL_FOREACH_SAFE(scan_devices, sd_iter, sd_tmp)
		{
			const char * const dname = sd_iter->string;
			// NOTE: Only checking flags here, NOT path/serial, so @ is unacceptable
			const char *colon = strchr(dname, ':');
			if (!colon)
				colon = &dname[-1];
			if (strcasecmp("noauto", &colon[1]) && strcasecmp("auto", &colon[1]))
				continue;
			const ssize_t dnamelen = (colon - dname);
			if (dnamelen >= 0 && _probe_device_find_drv(dname, dnamelen) != drv)
				continue;
			doauto = (tolower(colon[1]) == 'a');
			if (dnamelen != -1)
				break;
		}
		
		if (doauto && drv->lowl_match)
		{
			LL_FOREACH2(infolist, info, same_devid_next)
			{
				if (!drv->lowl_match(info))
					continue;
				if (drv->lowl_probe(info))
					return NULL;
				else
				if (opt_hotplug)
					bfg_need_detect_rescan = true;
			}
		}
	}
	
	// probe driver(s) with 'all' enabled
	DL_FOREACH_SAFE(scan_devices, sd_iter, sd_tmp)
	{
		const char * const dname = sd_iter->string;
		// NOTE: Only checking flags here, NOT path/serial, so @ is unacceptable
		const char * const colon = strchr(dname, ':');
		if (!colon)
		{
			LL_FOREACH2(infolist, info, same_devid_next)
			{
				if (
#ifdef NEED_BFG_LOWL_VCOM
					(info->lowl == &lowl_vcom && !strcasecmp(dname, "all")) ||
#endif
					_probe_device_match(info, (dname[0] == '@') ? &dname[1] : dname))
				{
					BFG_FOREACH_DRIVER_BY_PRIORITY(dreg, dreg_tmp)
					{
						const struct device_drv * const drv = dreg->drv;
						if (!drv_algo_check(drv))
							continue;
						if (drv->lowl_probe_by_name_only)
							continue;
						if (!drv->lowl_probe)
							continue;
						if (drv->lowl_probe(info))
							return NULL;
					}
					if (opt_hotplug)
						request_rescan = true;
					break;
				}
			}
			continue;
		}
		if (strcasecmp(&colon[1], "all"))
			continue;
		const size_t dnamelen = (colon - dname);
		LL_FOREACH2(infolist, info, same_devid_next)
		{
			const struct device_drv * const drv = _probe_device_find_drv(dname, dnamelen);
			if (!(drv && drv->lowl_probe && drv_algo_check(drv)))
				continue;
			if (drv->lowl_probe(info))
				return NULL;
		}
	}
	
	// Only actually request a rescan if we never found any cgpu
	if (request_rescan)
		bfg_need_detect_rescan = true;
	
	return NULL;
}

void probe_device(struct lowlevel_device_info * const info)
{
	pthread_create(&info->probe_pth, NULL, probe_device_thread, info);
}
#endif

int create_new_cgpus(void (*addfunc)(void*), void *arg)
{
	static pthread_mutex_t mutex = PTHREAD_MUTEX_INITIALIZER;
	int devcount, i, mining_threads_new = 0;
	unsigned int k;
	struct cgpu_info *cgpu;
	struct thr_info *thr;
	void *p;
	
	mutex_lock(&mutex);
	devcount = total_devices;
	
	addfunc(arg);
	
	if (!total_devices_new)
		goto out;
	
	wr_lock(&devices_lock);
	p = realloc(devices, sizeof(struct cgpu_info *) * (total_devices + total_devices_new + 1));
	if (unlikely(!p))
	{
		wr_unlock(&devices_lock);
		applog(LOG_ERR, "scan_serial: realloc failed trying to grow devices array");
		goto out;
	}
	devices = p;
	wr_unlock(&devices_lock);
	
	for (i = 0; i < total_devices_new; ++i)
	{
		cgpu = devices_new[i];
		mining_threads_new += cgpu->threads ?: 1;
	}
	
	wr_lock(&mining_thr_lock);
	mining_threads_new += mining_threads;
	p = realloc(mining_thr, sizeof(struct thr_info *) * mining_threads_new);
	if (unlikely(!p))
	{
		wr_unlock(&mining_thr_lock);
		applog(LOG_ERR, "scan_serial: realloc failed trying to grow mining_thr");
		goto out;
	}
	mining_thr = p;
	wr_unlock(&mining_thr_lock);
	for (i = mining_threads; i < mining_threads_new; ++i) {
		mining_thr[i] = calloc(1, sizeof(*thr));
		if (!mining_thr[i])
		{
			applog(LOG_ERR, "scan_serial: Failed to calloc mining_thr[%d]", i);
			for ( ; --i >= mining_threads; )
				free(mining_thr[i]);
			goto out;
		}
	}
	
	k = mining_threads;
	for (i = 0; i < total_devices_new; ++i)
	{
		cgpu = devices_new[i];
		
		allocate_cgpu(cgpu, &k);
	}
	for (i = 0; i < total_devices_new; ++i)
	{
		cgpu = devices_new[i];
		
		start_cgpu(cgpu);
		register_device(cgpu);
		++total_devices;
	}
	
#ifdef HAVE_CURSES
	switch_logsize();
#endif
	
out:
	total_devices_new = 0;
	
	devcount = total_devices - devcount;
	mutex_unlock(&mutex);
	
	return devcount;
}

int scan_serial(const char *s)
{
	return create_new_cgpus(_scan_serial, (void*)s);
}

static pthread_mutex_t rescan_mutex = PTHREAD_MUTEX_INITIALIZER;
static bool rescan_active;
static struct timeval tv_rescan;
static notifier_t rescan_notifier;

static
void *rescan_thread(__maybe_unused void *p)
{
	pthread_detach(pthread_self());
	RenameThread("rescan");
	
	struct timeval tv_timeout, tv_now;
	fd_set rfds;
	
	while (true)
	{
		mutex_lock(&rescan_mutex);
		tv_timeout = tv_rescan;
		if (!timer_isset(&tv_timeout))
		{
			rescan_active = false;
			mutex_unlock(&rescan_mutex);
			break;
		}
		mutex_unlock(&rescan_mutex);
		
		FD_ZERO(&rfds);
		FD_SET(rescan_notifier[0], &rfds);
		const int maxfd = rescan_notifier[0];
		
		timer_set_now(&tv_now);
		if (select(maxfd+1, &rfds, NULL, NULL, select_timeout(&tv_timeout, &tv_now)) > 0)
			notifier_read(rescan_notifier);
		
		mutex_lock(&rescan_mutex);
		if (timer_passed(&tv_rescan, NULL))
		{
			timer_unset(&tv_rescan);
			mutex_unlock(&rescan_mutex);
			applog(LOG_DEBUG, "Rescan timer expired, triggering");
			scan_serial(NULL);
		}
		else
			mutex_unlock(&rescan_mutex);
	}
	return NULL;
}

static
void _schedule_rescan(const struct timeval * const tvp_when)
{
	if (rescan_active)
	{
		if (timercmp(tvp_when, &tv_rescan, <))
			applog(LOG_DEBUG, "schedule_rescan: New schedule is before current, waiting it out");
		else
		{
			applog(LOG_DEBUG, "schedule_rescan: New schedule is after current, delaying rescan");
			tv_rescan = *tvp_when;
		}
		return;
	}
	
	applog(LOG_DEBUG, "schedule_rescan: Scheduling rescan (no rescans currently pending)");
	tv_rescan = *tvp_when;
	rescan_active = true;
	
	static pthread_t pth;
	if (unlikely(pthread_create(&pth, NULL, rescan_thread, NULL)))
		applog(LOG_ERR, "Failed to start rescan thread");
}

static
void schedule_rescan(const struct timeval * const tvp_when)
{
	mutex_lock(&rescan_mutex);
	_schedule_rescan(tvp_when);
	mutex_unlock(&rescan_mutex);
}

#ifdef HAVE_BFG_HOTPLUG
static
void hotplug_trigger()
{
	applog(LOG_DEBUG, "%s: Scheduling rescan immediately", __func__);
	struct timeval tv_now;
	timer_set_now(&tv_now);
	schedule_rescan(&tv_now);
}
#endif

#if defined(HAVE_LIBUDEV) && defined(HAVE_SYS_EPOLL_H)

static
void *hotplug_thread(__maybe_unused void *p)
{
	pthread_detach(pthread_self());
	RenameThread("hotplug");
	
	struct udev * const udev = udev_new();
	if (unlikely(!udev))
		applogfailr(NULL, LOG_ERR, "udev_new");
	struct udev_monitor * const mon = udev_monitor_new_from_netlink(udev, "udev");
	if (unlikely(!mon))
		applogfailr(NULL, LOG_ERR, "udev_monitor_new_from_netlink");
	if (unlikely(udev_monitor_enable_receiving(mon)))
		applogfailr(NULL, LOG_ERR, "udev_monitor_enable_receiving");
	const int epfd = epoll_create(1);
	if (unlikely(epfd == -1))
		applogfailr(NULL, LOG_ERR, "epoll_create");
	{
		const int fd = udev_monitor_get_fd(mon);
		struct epoll_event ev = {
			.events = EPOLLIN | EPOLLPRI,
			.data.fd = fd,
		};
		if (epoll_ctl(epfd, EPOLL_CTL_ADD, fd, &ev))
			applogfailr(NULL, LOG_ERR, "epoll_ctl");
	}
	
	struct epoll_event ev;
	int rv;
	bool pending = false;
	while (true)
	{
		rv = epoll_wait(epfd, &ev, 1, pending ? hotplug_delay_ms : -1);
		if (rv == -1)
		{
			if (errno == EAGAIN || errno == EINTR)
				continue;
			break;
		}
		if (!rv)
		{
			hotplug_trigger();
			pending = false;
			continue;
		}
		struct udev_device * const device = udev_monitor_receive_device(mon);
		if (!device)
			continue;
		const char * const action = udev_device_get_action(device);
		applog(LOG_DEBUG, "%s: Received %s event", __func__, action);
		if (!strcmp(action, "add"))
			pending = true;
		udev_device_unref(device);
	}
	
	applogfailr(NULL, LOG_ERR, "epoll_wait");
}

#elif defined(WIN32)

static UINT_PTR _hotplug_wintimer_id;

VOID CALLBACK hotplug_win_timer(HWND hwnd, UINT msg, UINT_PTR idEvent, DWORD dwTime)
{
	KillTimer(NULL, _hotplug_wintimer_id);
	_hotplug_wintimer_id = 0;
	hotplug_trigger();
}

LRESULT CALLBACK hotplug_win_callback(HWND hwnd, UINT msg, WPARAM wParam, LPARAM lParam)
{
	if (msg == WM_DEVICECHANGE && wParam == DBT_DEVNODES_CHANGED)
	{
		applog(LOG_DEBUG, "%s: Received DBT_DEVNODES_CHANGED event", __func__);
		_hotplug_wintimer_id = SetTimer(NULL, _hotplug_wintimer_id, hotplug_delay_ms, hotplug_win_timer);
	}
	return DefWindowProc(hwnd, msg, wParam, lParam);
}

static
void *hotplug_thread(__maybe_unused void *p)
{
	pthread_detach(pthread_self());
	
	WNDCLASS DummyWinCls = {
		.lpszClassName = "BFGDummyWinCls",
		.lpfnWndProc = hotplug_win_callback,
	};
	ATOM a = RegisterClass(&DummyWinCls);
	if (unlikely(!a))
		applogfailinfor(NULL, LOG_ERR, "RegisterClass", "%d", (int)GetLastError());
	HWND hwnd = CreateWindow((void*)(intptr_t)a, NULL, WS_OVERLAPPED, CW_USEDEFAULT, CW_USEDEFAULT, CW_USEDEFAULT, CW_USEDEFAULT, NULL, NULL, NULL, NULL);
	if (unlikely(!hwnd))
		applogfailinfor(NULL, LOG_ERR, "CreateWindow", "%d", (int)GetLastError());
	MSG msg;
	while (GetMessage(&msg, NULL, 0, 0))
	{
		TranslateMessage(&msg);
		DispatchMessage(&msg);
	}
	quit(0, "WM_QUIT received");
	return NULL;
}

#endif

#ifdef HAVE_BFG_HOTPLUG
static
void hotplug_start()
{
	pthread_t pth;
	if (unlikely(pthread_create(&pth, NULL, hotplug_thread, NULL)))
		applog(LOG_ERR, "Failed to start hotplug thread");
}
#endif

static void probe_pools(void)
{
	int i;

	for (i = 0; i < total_pools; i++) {
		struct pool *pool = pools[i];

		pool->testing = true;
		pthread_create(&pool->test_thread, NULL, test_pool_thread, (void *)pool);
	}
}

static void raise_fd_limits(void)
{
#ifdef HAVE_SETRLIMIT
	struct rlimit fdlimit;
	rlim_t old_soft_limit;
	char frombuf[0x10] = "unlimited";
	char hardbuf[0x10] = "unlimited";
	
	if (getrlimit(RLIMIT_NOFILE, &fdlimit))
		applogr(, LOG_DEBUG, "setrlimit: Failed to getrlimit(RLIMIT_NOFILE)");
	
	old_soft_limit = fdlimit.rlim_cur;
	
	if (fdlimit.rlim_max > FD_SETSIZE || fdlimit.rlim_max == RLIM_INFINITY)
		fdlimit.rlim_cur = FD_SETSIZE;
	else
		fdlimit.rlim_cur = fdlimit.rlim_max;
	
	if (fdlimit.rlim_max != RLIM_INFINITY)
		snprintf(hardbuf, sizeof(hardbuf), "%lu", (unsigned long)fdlimit.rlim_max);
	if (old_soft_limit != RLIM_INFINITY)
		snprintf(frombuf, sizeof(frombuf), "%lu", (unsigned long)old_soft_limit);
	
	if (fdlimit.rlim_cur == old_soft_limit)
		applogr(, LOG_DEBUG, "setrlimit: Soft fd limit not being changed from %lu (FD_SETSIZE=%lu; hard limit=%s)",
		        (unsigned long)old_soft_limit, (unsigned long)FD_SETSIZE, hardbuf);
	
	if (setrlimit(RLIMIT_NOFILE, &fdlimit))
		applogr(, LOG_DEBUG, "setrlimit: Failed to change soft fd limit from %s to %lu (FD_SETSIZE=%lu; hard limit=%s)",
		        frombuf, (unsigned long)fdlimit.rlim_cur, (unsigned long)FD_SETSIZE, hardbuf);
	
	applog(LOG_DEBUG, "setrlimit: Changed soft fd limit from %s to %lu (FD_SETSIZE=%lu; hard limit=%s)",
	       frombuf, (unsigned long)fdlimit.rlim_cur, (unsigned long)FD_SETSIZE, hardbuf);
#else
	applog(LOG_DEBUG, "setrlimit: Not supported by platform");
#endif
}

extern void bfg_init_threadlocal();
extern void stratumsrv_start();

int main(int argc, char *argv[])
{
	struct sigaction handler;
	struct thr_info *thr;
	struct block *block;
	unsigned int k;
	int i;
	int rearrange_pools = 0;
	char *s;

#ifdef WIN32
	LoadLibrary("backtrace.dll");
#endif

	blkmk_sha256_impl = my_blkmaker_sha256_callback;

	bfg_init_threadlocal();
#ifndef HAVE_PTHREAD_CANCEL
	setup_pthread_cancel_workaround();
#endif
	bfg_init_checksums();

#ifdef WIN32
	{
		WSADATA wsa;
		i = WSAStartup(MAKEWORD(2, 2), &wsa);
		if (i)
			quit(1, "Failed to initialise Winsock: %s", bfg_strerror(i, BST_SOCKET));
	}
#endif
	
	/* This dangerous functions tramples random dynamically allocated
	 * variables so do it before anything at all */
	if (unlikely(curl_global_init(CURL_GLOBAL_ALL)))
		quit(1, "Failed to curl_global_init");

	initial_args = malloc(sizeof(char *) * (argc + 1));
	for  (i = 0; i < argc; i++)
		initial_args[i] = strdup(argv[i]);
	initial_args[argc] = NULL;

	mutex_init(&hash_lock);
	mutex_init(&console_lock);
	cglock_init(&control_lock);
	mutex_init(&stats_lock);
	mutex_init(&sharelog_lock);
	cglock_init(&ch_lock);
	mutex_init(&sshare_lock);
	rwlock_init(&blk_lock);
	rwlock_init(&netacc_lock);
	rwlock_init(&mining_thr_lock);
	rwlock_init(&devices_lock);

	mutex_init(&lp_lock);
	if (unlikely(pthread_cond_init(&lp_cond, NULL)))
		quit(1, "Failed to pthread_cond_init lp_cond");

	if (unlikely(pthread_cond_init(&gws_cond, NULL)))
		quit(1, "Failed to pthread_cond_init gws_cond");

	notifier_init(submit_waiting_notifier);
	timer_unset(&tv_rescan);
	notifier_init(rescan_notifier);

	/* Create a unique get work queue */
	getq = tq_new();
	if (!getq)
		quit(1, "Failed to create getq");
	/* We use the getq mutex as the staged lock */
	stgd_lock = &getq->mutex;

	snprintf(packagename, sizeof(packagename), "%s %s", PACKAGE, VERSION);

#ifdef WANT_CPUMINE
	init_max_name_len();
#endif

	handler.sa_handler = &sighandler;
	handler.sa_flags = 0;
	sigemptyset(&handler.sa_mask);
#ifdef HAVE_PTHREAD_CANCEL
	sigaction(SIGTERM, &handler, &termhandler);
#else
	// Need to let pthread_cancel emulation handle SIGTERM first
	termhandler = pcwm_orig_term_handler;
	pcwm_orig_term_handler = handler;
#endif
	sigaction(SIGINT, &handler, &inthandler);
#ifndef WIN32
	signal(SIGPIPE, SIG_IGN);
#else
	timeBeginPeriod(1);
#endif
	opt_kernel_path = CGMINER_PREFIX;
	cgminer_path = alloca(PATH_MAX);
	s = strdup(argv[0]);
	strcpy(cgminer_path, dirname(s));
	free(s);
	strcat(cgminer_path, "/");
#if defined(WANT_CPUMINE) && defined(WIN32)
	{
		char buf[32];
		int gev = GetEnvironmentVariable("BFGMINER_BENCH_ALGO", buf, sizeof(buf));
		if (gev > 0 && gev < sizeof(buf))
		{
			setup_benchmark_pool();
			double rate = bench_algo_stage3(atoi(buf));
			
			// Write result to shared memory for parent
			char unique_name[64];
			
			if (GetEnvironmentVariable("BFGMINER_SHARED_MEM", unique_name, 32))
			{
				HANDLE map_handle = CreateFileMapping(
					INVALID_HANDLE_VALUE,   // use paging file
					NULL,                   // default security attributes
					PAGE_READWRITE,         // read/write access
					0,                      // size: high 32-bits
					4096,                   // size: low 32-bits
					unique_name             // name of map object
				);
				if (NULL != map_handle) {
					void *shared_mem = MapViewOfFile(
						map_handle,     // object to map view of
						FILE_MAP_WRITE, // read/write access
						0,              // high offset:  map from
						0,              // low offset:   beginning
						0               // default: map entire file
					);
					if (NULL != shared_mem)
						CopyMemory(shared_mem, &rate, sizeof(rate));
					(void)UnmapViewOfFile(shared_mem);
				}
				(void)CloseHandle(map_handle);
			}
			exit(0);
		}
	}
#endif

	devcursor = 8;
	logstart = devcursor;
	logcursor = logstart;

	block = calloc(sizeof(struct block), 1);
	if (unlikely(!block))
		quit (1, "main OOM");
	for (i = 0; i < 36; i++)
		strcat(block->hash, "0");
	HASH_ADD_STR(blocks, hash, block);
	strcpy(current_block, block->hash);

	mutex_init(&submitting_lock);

#ifdef HAVE_OPENCL
	opencl_early_init();
#endif

	schedstart.tm.tm_sec = 1;
	schedstop .tm.tm_sec = 1;

	opt_register_table(opt_early_table, NULL);
	opt_register_table(opt_config_table, NULL);
	opt_register_table(opt_cmdline_table, NULL);
	opt_early_parse(argc, argv, applog_and_exit);
	
	if (!config_loaded)
	{
		load_default_config();
		rearrange_pools = total_pools;
	}
	
	opt_free_table();
	
	/* parse command line */
	opt_register_table(opt_config_table,
			   "Options for both config file and command line");
	opt_register_table(opt_cmdline_table,
			   "Options for command line only");

	opt_parse(&argc, argv, applog_and_exit);
	if (argc != 1)
		quit(1, "Unexpected extra commandline arguments");
	
	if (rearrange_pools && rearrange_pools < total_pools)
	{
		// Prioritise commandline pools before default-config pools
		for (i = 0; i < rearrange_pools; ++i)
			pools[i]->prio += rearrange_pools;
		for ( ; i < total_pools; ++i)
			pools[i]->prio -= rearrange_pools;
	}

#ifndef HAVE_PTHREAD_CANCEL
	// Can't do this any earlier, or config isn't loaded
	applog(LOG_DEBUG, "pthread_cancel workaround in use");
#endif

#ifdef HAVE_PWD_H
	struct passwd *user_info = NULL;
	if (opt_setuid != NULL) {
		if ((user_info = getpwnam(opt_setuid)) == NULL) {
			quit(1, "Unable to find setuid user information");
		}
	}
#endif

#ifdef HAVE_CHROOT
        if (chroot_dir != NULL) {
#ifdef HAVE_PWD_H
                if (user_info == NULL && getuid() == 0) {
                        applog(LOG_WARNING, "Running as root inside chroot");
                }
#endif
                if (chroot(chroot_dir) != 0) {
                       quit(1, "Unable to chroot");
                }
		if (chdir("/"))
			quit(1, "Unable to chdir to chroot");
        }
#endif

#ifdef HAVE_PWD_H
		if (user_info != NULL) {
			if (setgid((*user_info).pw_gid) != 0)
				quit(1, "Unable to setgid");
			if (setuid((*user_info).pw_uid) != 0)
				quit(1, "Unable to setuid");
		}
#endif
	raise_fd_limits();
	
	if (opt_benchmark) {
		while (total_pools)
			remove_pool(pools[0]);

		setup_benchmark_pool();
	}
	
	if (opt_unittest) {
		test_cgpu_match();
		test_intrange();
		test_decimal_width();
		test_domain_funcs();
		test_target();
		utf8_test();
	}

#ifdef HAVE_CURSES
	if (opt_realquiet || opt_display_devs)
		use_curses = false;

	setlocale(LC_ALL, "C");
	if (use_curses)
		enable_curses();
#endif

#ifdef HAVE_LIBUSB
	int err = libusb_init(NULL);
	if (err)
		applog(LOG_WARNING, "libusb_init() failed err %d", err);
	else
		have_libusb = true;
#endif

	applog(LOG_WARNING, "Started %s", packagename);
	if (cnfbuf) {
		applog(LOG_NOTICE, "Loaded configuration file %s", cnfbuf);
		switch (fileconf_load) {
			case 0:
				applog(LOG_WARNING, "Fatal JSON error in configuration file.");
				applog(LOG_WARNING, "Configuration file could not be used.");
				break;
			case -1:
				applog(LOG_WARNING, "Error in configuration file, partially loaded.");
				if (use_curses)
					applog(LOG_WARNING, "Start BFGMiner with -T to see what failed to load.");
				break;
			default:
				break;
		}
		free(cnfbuf);
		cnfbuf = NULL;
	}

	i = strlen(opt_kernel_path) + 2;
	char __kernel_path[i];
	snprintf(__kernel_path, i, "%s/", opt_kernel_path);
	opt_kernel_path = __kernel_path;

	if (want_per_device_stats)
		opt_log_output = true;

#ifdef WANT_CPUMINE
#ifdef USE_SCRYPT
	if (opt_scrypt)
		set_scrypt_algo(&opt_algo);
#endif
#endif

	bfg_devapi_init();
	drv_detect_all();
	total_devices = total_devices_new;
	devices = devices_new;
	total_devices_new = 0;
	devices_new = NULL;

	if (opt_display_devs) {
		int devcount = 0;
		applog(LOG_ERR, "Devices detected:");
		for (i = 0; i < total_devices; ++i) {
			struct cgpu_info *cgpu = devices[i];
			char buf[0x100];
			if (cgpu->device != cgpu)
				continue;
			if (cgpu->name)
				snprintf(buf, sizeof(buf), " %s", cgpu->name);
			else
			if (cgpu->dev_manufacturer)
				snprintf(buf, sizeof(buf), " %s by %s", (cgpu->dev_product ?: "Device"), cgpu->dev_manufacturer);
			else
			if (cgpu->dev_product)
				snprintf(buf, sizeof(buf), " %s", cgpu->dev_product);
			else
				strcpy(buf, " Device");
			tailsprintf(buf, sizeof(buf), " (driver=%s; procs=%d", cgpu->drv->dname, cgpu->procs);
			if (cgpu->dev_serial)
				tailsprintf(buf, sizeof(buf), "; serial=%s", cgpu->dev_serial);
			if (cgpu->device_path)
				tailsprintf(buf, sizeof(buf), "; path=%s", cgpu->device_path);
			tailsprintf(buf, sizeof(buf), ")");
			_applog(LOG_NOTICE, buf);
			++devcount;
		}
		quit(0, "%d devices listed", devcount);
	}

	mining_threads = 0;
	for (i = 0; i < total_devices; ++i)
		register_device(devices[i]);

	if (!total_devices) {
		applog(LOG_WARNING, "No devices detected!");
		if (use_curses)
			applog(LOG_WARNING, "Waiting for devices; press 'M+' to add, or 'Q' to quit");
		else
			applog(LOG_WARNING, "Waiting for devices");
	}
	
	if (opt_quit_summary == BQS_DEFAULT)
	{
		if (total_devices < 25)
			opt_quit_summary = BQS_PROCS;
		else
			opt_quit_summary = BQS_DEVS;
	}

#ifdef HAVE_CURSES
	switch_logsize();
#endif

	if (!total_pools) {
		applog(LOG_WARNING, "Need to specify at least one pool server.");
#ifdef HAVE_CURSES
		if (!use_curses || !input_pool(false))
#endif
			quit(1, "Pool setup failed");
	}

	for (i = 0; i < total_pools; i++) {
		struct pool *pool = pools[i];
		size_t siz;

		pool->cgminer_stats.getwork_wait_min.tv_sec = MIN_SEC_UNSET;
		pool->cgminer_pool_stats.getwork_wait_min.tv_sec = MIN_SEC_UNSET;

		if (!pool->rpc_url)
			quit(1, "No URI supplied for pool %u", i);
		
		if (!pool->rpc_userpass) {
			if (!pool->rpc_user || !pool->rpc_pass)
				quit(1, "No login credentials supplied for pool %u %s", i, pool->rpc_url);
			siz = strlen(pool->rpc_user) + strlen(pool->rpc_pass) + 2;
			pool->rpc_userpass = malloc(siz);
			if (!pool->rpc_userpass)
				quit(1, "Failed to malloc userpass");
			snprintf(pool->rpc_userpass, siz, "%s:%s", pool->rpc_user, pool->rpc_pass);
		}
	}
	/* Set the currentpool to pool with priority 0 */
	validate_pool_priorities();
	for (i = 0; i < total_pools; i++) {
		struct pool *pool  = pools[i];

		if (!pool->prio)
			currentpool = pool;
	}

#ifdef HAVE_SYSLOG_H
	if (use_syslog)
		openlog(PACKAGE, LOG_PID, LOG_USER);
#endif

	#if defined(unix) || defined(__APPLE__)
		if (opt_stderr_cmd)
			fork_monitor();
	#endif // defined(unix)

	mining_thr = calloc(mining_threads, sizeof(thr));
	if (!mining_thr)
		quit(1, "Failed to calloc mining_thr");
	for (i = 0; i < mining_threads; i++) {
		mining_thr[i] = calloc(1, sizeof(*thr));
		if (!mining_thr[i])
			quit(1, "Failed to calloc mining_thr[%d]", i);
	}

	total_control_threads = 6;
	control_thr = calloc(total_control_threads, sizeof(*thr));
	if (!control_thr)
		quit(1, "Failed to calloc control_thr");

	if (opt_benchmark)
		goto begin_bench;

	for (i = 0; i < total_pools; i++) {
		struct pool *pool  = pools[i];

		enable_pool(pool);
		pool->idle = true;
	}

	applog(LOG_NOTICE, "Probing for an alive pool");
	do {
		bool still_testing;
		int i;

		/* Look for at least one active pool before starting */
		probe_pools();
		do {
			sleep(1);
			if (pools_active)
				break;
			still_testing = false;
			for (int i = 0; i < total_pools; ++i)
				if (pools[i]->testing)
					still_testing = true;
		} while (still_testing);

		if (!pools_active) {
			applog(LOG_ERR, "No servers were found that could be used to get work from.");
			applog(LOG_ERR, "Please check the details from the list below of the servers you have input");
			applog(LOG_ERR, "Most likely you have input the wrong URL, forgotten to add a port, or have not set up workers");
			for (i = 0; i < total_pools; i++) {
				struct pool *pool;

				pool = pools[i];
				applog(LOG_WARNING, "Pool: %d  URL: %s  User: %s  Password: %s",
				       i, pool->rpc_url, pool->rpc_user, pool->rpc_pass);
			}
#ifdef HAVE_CURSES
			if (use_curses) {
				halfdelay(150);
				applog(LOG_ERR, "Press any key to exit, or BFGMiner will try again in 15s.");
				if (getch() != ERR)
					quit(0, "No servers could be used! Exiting.");
				cbreak();
			} else
#endif
				quit(0, "No servers could be used! Exiting.");
		}
	} while (!pools_active);

#ifdef USE_SCRYPT
	if (detect_algo == 1 && !opt_scrypt) {
		applog(LOG_NOTICE, "Detected scrypt algorithm");
		opt_scrypt = true;
	}
#endif
	detect_algo = 0;

begin_bench:
	total_mhashes_done = 0;
	for (i = 0; i < total_devices; i++) {
		struct cgpu_info *cgpu = devices[i];

		cgpu->rolling = cgpu->total_mhashes = 0;
	}
	
	cgtime(&total_tv_start);
	cgtime(&total_tv_end);
	miner_started = total_tv_start;
	time_t miner_start_ts = time(NULL);
	if (schedstart.tm.tm_sec)
		localtime_r(&miner_start_ts, &schedstart.tm);
	if (schedstop.tm.tm_sec)
		localtime_r(&miner_start_ts, &schedstop .tm);
	get_datestamp(datestamp, sizeof(datestamp), miner_start_ts);

	// Initialise processors and threads
	k = 0;
	for (i = 0; i < total_devices; ++i) {
		struct cgpu_info *cgpu = devices[i];
		allocate_cgpu(cgpu, &k);
	}

	// Start threads
	for (i = 0; i < total_devices; ++i) {
		struct cgpu_info *cgpu = devices[i];
		start_cgpu(cgpu);
	}

#ifdef HAVE_OPENCL
	for (i = 0; i < nDevs; i++)
		pause_dynamic_threads(i);
#endif

#ifdef WANT_CPUMINE
	if (opt_n_threads > 0)
		applog(LOG_INFO, "%d cpu miner threads started, using '%s' algorithm.",
		       opt_n_threads, algo_names[opt_algo]);
#endif

	cgtime(&total_tv_start);
	cgtime(&total_tv_end);

	if (!opt_benchmark)
	{
		pthread_t submit_thread;
		if (unlikely(pthread_create(&submit_thread, NULL, submit_work_thread, NULL)))
			quit(1, "submit_work thread create failed");
	}

	watchpool_thr_id = 1;
	thr = &control_thr[watchpool_thr_id];
	/* start watchpool thread */
	if (thr_info_create(thr, NULL, watchpool_thread, NULL))
		quit(1, "watchpool thread create failed");
	pthread_detach(thr->pth);

	watchdog_thr_id = 2;
	thr = &control_thr[watchdog_thr_id];
	/* start watchdog thread */
	if (thr_info_create(thr, NULL, watchdog_thread, NULL))
		quit(1, "watchdog thread create failed");
	pthread_detach(thr->pth);

#ifdef HAVE_OPENCL
	/* Create reinit gpu thread */
	gpur_thr_id = 3;
	thr = &control_thr[gpur_thr_id];
	thr->q = tq_new();
	if (!thr->q)
		quit(1, "tq_new failed for gpur_thr_id");
	if (thr_info_create(thr, NULL, reinit_gpu, thr))
		quit(1, "reinit_gpu thread create failed");
#endif	

	/* Create API socket thread */
	api_thr_id = 4;
	thr = &control_thr[api_thr_id];
	if (thr_info_create(thr, NULL, api_thread, thr))
		quit(1, "API thread create failed");
	
#ifdef USE_LIBMICROHTTPD
	if (httpsrv_port != -1)
		httpsrv_start(httpsrv_port);
#endif

#ifdef USE_LIBEVENT
	if (stratumsrv_port != -1)
		stratumsrv_start();
#endif

#ifdef HAVE_BFG_HOTPLUG
	if (opt_hotplug && !opt_scrypt)
		hotplug_start();
#endif

#ifdef HAVE_CURSES
	/* Create curses input thread for keyboard input. Create this last so
	 * that we know all threads are created since this can call kill_work
	 * to try and shut down ll previous threads. */
	input_thr_id = 5;
	thr = &control_thr[input_thr_id];
	if (thr_info_create(thr, NULL, input_thread, thr))
		quit(1, "input thread create failed");
	pthread_detach(thr->pth);
#endif

	/* Just to be sure */
	if (total_control_threads != 6)
		quit(1, "incorrect total_control_threads (%d) should be 7", total_control_threads);

	/* Once everything is set up, main() becomes the getwork scheduler */
	while (42) {
		int ts, max_staged = opt_queue;
		struct pool *pool, *cp;
		bool lagging = false;
		struct curl_ent *ce;
		struct work *work;

		cp = current_pool();

		// Generally, each processor needs a new work, and all at once during work restarts
		max_staged += mining_threads;

		mutex_lock(stgd_lock);
		ts = __total_staged();

		if (!pool_localgen(cp) && !ts && !opt_fail_only)
			lagging = true;

		/* Wait until hash_pop tells us we need to create more work */
		if (ts > max_staged) {
			staged_full = true;
			pthread_cond_wait(&gws_cond, stgd_lock);
			ts = __total_staged();
		}
		mutex_unlock(stgd_lock);

		if (ts > max_staged)
			continue;

		work = make_work();

		if (lagging && !pool_tset(cp, &cp->lagging)) {
			applog(LOG_WARNING, "Pool %d not providing work fast enough", cp->pool_no);
			cp->getfail_occasions++;
			total_go++;
		}
		pool = select_pool(lagging);
retry:
		if (pool->has_stratum) {
			while (!pool->stratum_active || !pool->stratum_notify) {
				struct pool *altpool = select_pool(true);

				if (altpool == pool && pool->has_stratum)
					cgsleep_ms(5000);
				pool = altpool;
				goto retry;
			}
			gen_stratum_work(pool, work);
			applog(LOG_DEBUG, "Generated stratum work");
			stage_work(work);
			continue;
		}

		if (pool->last_work_copy) {
			mutex_lock(&pool->last_work_lock);
			struct work *last_work = pool->last_work_copy;
			if (!last_work)
				{}
			else
			if (can_roll(last_work) && should_roll(last_work)) {
				struct timeval tv_now;
				cgtime(&tv_now);
				free_work(work);
				work = make_clone(pool->last_work_copy);
				mutex_unlock(&pool->last_work_lock);
				roll_work(work);
				applog(LOG_DEBUG, "Generated work from latest GBT job in get_work_thread with %d seconds left", (int)blkmk_time_left(work->tr->tmpl, tv_now.tv_sec));
				stage_work(work);
				continue;
			} else if (last_work->tr && pool->proto == PLP_GETBLOCKTEMPLATE && blkmk_work_left(last_work->tr->tmpl) > (unsigned long)mining_threads) {
				// Don't free last_work_copy, since it is used to detect upstream provides plenty of work per template
			} else {
				free_work(last_work);
				pool->last_work_copy = NULL;
			}
			mutex_unlock(&pool->last_work_lock);
		}

		if (clone_available()) {
			applog(LOG_DEBUG, "Cloned getwork work");
			free_work(work);
			continue;
		}

		if (opt_benchmark) {
			get_benchmark_work(work);
			applog(LOG_DEBUG, "Generated benchmark work");
			stage_work(work);
			continue;
		}

		work->pool = pool;
		ce = pop_curl_entry3(pool, 2);
		/* obtain new work from bitcoin via JSON-RPC */
		if (!get_upstream_work(work, ce->curl)) {
			struct pool *next_pool;

			/* Make sure the pool just hasn't stopped serving
			 * requests but is up as we'll keep hammering it */
			push_curl_entry(ce, pool);
			++pool->seq_getfails;
			pool_died(pool);
			next_pool = select_pool(!opt_fail_only);
			if (pool == next_pool) {
				applog(LOG_DEBUG, "Pool %d json_rpc_call failed on get work, retrying in 5s", pool->pool_no);
				cgsleep_ms(5000);
			} else {
				applog(LOG_DEBUG, "Pool %d json_rpc_call failed on get work, failover activated", pool->pool_no);
				pool = next_pool;
			}
			goto retry;
		}
		if (ts >= max_staged)
			pool_tclear(pool, &pool->lagging);
		if (pool_tclear(pool, &pool->idle))
			pool_resus(pool);

		applog(LOG_DEBUG, "Generated getwork work");
		stage_work(work);
		push_curl_entry(ce, pool);
	}

	return 0;
}