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ccminer.cpp
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/*
* Copyright 2010 Jeff Garzik
* Copyright 2012-2014 pooler
* Copyright 2014-2015 tpruvot
*
* 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 2 of the License, or (at your option)
* any later version. See COPYING for more details.
*/
#ifndef WIN32
#include "ccminer-config.h"
#else
#include "ccminer-config-win.h"
#endif
#include "cuda_runtime_api.h"
#include <cstdio>
#include <cstdlib>
#include <cstring>
#include <cinttypes>
#include <unistd.h>
#include <cmath>
#include <sys/time.h>
#include <ctime>
#include <csignal>
#include <curl/curl.h>
#include <jansson.h>
#include <openssl/sha.h>
#ifdef WIN32
#include <windows.h>
#include <cstdint>
#else
#include <errno.h>
#include <sys/resource.h>
#if HAVE_SYS_SYSCTL_H
#include <sys/types.h>
#if HAVE_SYS_PARAM_H
#include <sys/param.h>
#endif
#include <sys/sysctl.h>
#endif
#endif
using namespace std;
#include "miner.h"
#ifdef WIN32
#include <Mmsystem.h>
#pragma comment(lib, "winmm.lib")
#include "compat/winansi.h"
BOOL WINAPI ConsoleHandler(DWORD);
#endif
#define PROGRAM_NAME "ccminer"
#define LP_SCANTIME 25
#define MNR_BLKHDR_SZ 80
double expectedblocktime(const uint32_t *target);
extern void get_cuda_arch(int *version);
extern int cuda_arch[MAX_GPUS];
// from cuda.cpp
int cuda_num_devices();
void cuda_devicenames();
void cuda_devicereset();
int cuda_finddevice(char *name);
void cuda_print_devices();
void cuda_get_device_sm();
void cuda_reset_device(int thr_id, bool *init);
#include "nvml.h"
#ifdef USE_WRAPNVML
nvml_handle *hnvml = NULL;
#endif
enum workio_commands {
WC_GET_WORK,
WC_SUBMIT_WORK,
};
struct workio_cmd {
enum workio_commands cmd;
struct thr_info *thr;
union {
struct work *work;
} u;
};
bool opt_debug_diff = false;
bool opt_debug_threads = false;
bool opt_showdiff = true;
bool opt_hwmonitor = true;
const char *algo_names[] =
{
"invalid",
"zenprotocol"
};
char curl_err_str[CURL_ERROR_SIZE];
bool opt_verify = true;
bool opt_debug = false;
bool opt_protocol = false;
bool opt_benchmark = false;
bool want_longpoll = true;
bool have_longpoll = false;
bool want_stratum = true;
bool have_stratum = false;
bool allow_gbt = true;
bool allow_mininginfo = true;
bool check_dups = true;
static bool submit_old = false;
bool use_syslog = false;
bool use_colors = true;
static bool opt_background = false;
bool opt_quiet = false;
static int opt_retries = -1;
static int opt_fail_pause = 20;
int opt_timeout = 120;
static int opt_scantime = 25;
static json_t *opt_config = nullptr;
static const bool opt_time = true;
enum sha_algos opt_algo = ALGO_KECCAK_ZP;
int opt_n_threads = 0;
int gpu_threads = 1;
int opt_affinity = -1;
int opt_priority = 0;
static double opt_difficulty = 1; // CH
static bool opt_extranonce = true;
bool opt_trust_pool = false;
int num_cpus;
int active_gpus;
bool need_nvsettings = false;
bool need_memclockrst = false;
char * device_name[MAX_GPUS] = { nullptr };
int device_map[MAX_GPUS] = { 0 };
long device_sm[MAX_GPUS] = { 0 };
uint32_t gpus_intensity[MAX_GPUS] = {0};
int32_t device_mem_offsets[MAX_GPUS] = {0};
uint32_t device_gpu_clocks[MAX_GPUS] = {0};
uint32_t device_mem_clocks[MAX_GPUS] = {0};
uint32_t device_plimit[MAX_GPUS] = {0};
int8_t device_pstate[MAX_GPUS];
int32_t device_led[MAX_GPUS] = {-1, -1};
int opt_led_mode = 0;
int opt_cudaschedule = -1;
uint8_t device_tlimit[MAX_GPUS] = {0};
char *rpc_user = NULL;
static char *rpc_url = nullptr;
static char *rpc_userpass = nullptr;
static char *rpc_pass = nullptr;
static char *short_url = NULL;
char *opt_cert = nullptr;
char *opt_proxy = nullptr;
long opt_proxy_type;
struct thr_info *thr_info = nullptr;
static int work_thr_id;
struct thr_api *thr_api = nullptr;
int longpoll_thr_id = -1;
int stratum_thr_id = -1;
int api_thr_id = -1;
int monitor_thr_id = -1;
bool stratum_need_reset = false;
volatile bool abort_flag = false;
struct work_restart *work_restart = NULL;
bool send_stale;
struct stratum_ctx stratum = { 0 };
bool stop_mining = false;
volatile bool mining_has_stopped[MAX_GPUS];
unsigned int cudaschedule = cudaDeviceScheduleBlockingSync;
FILE *logfilepointer;
char *logfilename;
bool opt_logfile = false;
pthread_mutex_t applog_lock = PTHREAD_MUTEX_INITIALIZER;
pthread_mutex_t stats_lock = PTHREAD_MUTEX_INITIALIZER;
uint32_t accepted_count = 0L;
uint32_t rejected_count = 0L;
double thr_hashrates[MAX_GPUS];
uint64_t global_hashrate = 0;
double global_diff = 0.0;
uint64_t net_hashrate = 0;
uint64_t net_blocks = 0;
int opt_statsavg = 30;
uint16_t opt_api_listen = 0; /* 0 to disable */
bool opt_stratum_stats = true;
static char* opt_syslog_pfx = nullptr;
char *opt_api_allow = nullptr;
#ifdef HAVE_GETOPT_LONG
#include <getopt.h>
#else
struct option {
const char *name;
int has_arg;
int *flag;
int val;
};
#endif
static char const usage[] = "\
Usage: " PROGRAM_NAME " [OPTIONS]\n\
Options:\n\
-a, --algo=ALGO zenprotocol sha-3 256\n\
-d, --devices Comma separated list of CUDA devices to use. \n\
Device IDs start counting from 0! Alternatively takes\n\
string names of your cards like gtx780ti or gt640#2\n\
(matching 2nd gt640 in the PC)\n\
-i --intensity=N GPU intensity 8-31 (default: auto) \n\
Decimals are allowed for fine tuning \n\
-f, --diff-factor Divide difficulty by this factor (default 1.0) \n\
-m, --diff-multiplier Multiply difficulty by this value (default 1.0) \n\
-o, --url=URL URL of mining server\n\
-O, --userpass=U:P username:password pair for mining server\n\
-u, --user=USERNAME username for mining server\n\
-p, --pass=PASSWORD password for mining server\n\
--cert=FILE certificate for mining server using SSL\n\
-x, --proxy=... [PROTOCOL://]HOST[:PORT] connect through a proxy\n\
-t, --threads=N number of miner threads (default: number of nVidia GPUs)\n\
-r, --retries=N number of times to retry if a network call fails\n\
(default: retry indefinitely)\n\
-R, --retry-pause=N time to pause between retries, in seconds (default: 30)\n\
-T, --timeout=N network timeout, in seconds (default: 270)\n\
-s, --scantime=N upper bound on time spent scanning current work when\n\
long polling is unavailable, in seconds (default: 5)\n\
-n, --ndevs list cuda devices\n\
-N, --statsavg number of samples used to display hashrate (default: 30)\n\
--no-gbt disable getblocktemplate support (height check in solo)\n\
--no-longpoll disable X-Long-Polling support\n\
--no-stratum disable X-Stratum support\n\
-e disable extranonce\n\
-q, --quiet disable per-thread hashmeter output\n\
--no-color disable colored output\n\
-D, --debug enable debug output\n\
-P, --protocol-dump verbose dump of protocol-level activities\n\
--cpu-affinity set process affinity to cpu core(s), mask 0x3 for cores 0 and 1\n\
--cpu-priority set process priority (default: 0 idle, 2 normal to 5 highest)\n\
--cuda-schedule set CUDA scheduling option:\n\
0: BlockingSync (default)\n\
1: Spin\n\
2: Yield\n\
-b, --api-bind=... IP address and port number for the miner API (example: 127.0.0.1:4068)\n\
--logfile=FILE create logfile\n\
-S, --syslog use system log for output messages\n\
--syslog-prefix=... allow to change syslog tool name\n\
-B, --background run the miner in the background\n\
--benchmark run in offline benchmark mode\n\
--no-cpu-verify don't verify the found results\n\
-c, --config=FILE load a JSON-format configuration file\n\
-V, --version display version information and exit\n\
-h, --help display this help text and exit\n"
#if defined(USE_WRAPNVML) && (defined(__linux) || defined(_WIN64)) /* via nvml */
"\
--mem-clock=N Set the gpu memory max clock (346.72+ driver)\n\
--gpu-clock=N Set the gpu engine max clock (346.72+ driver)\n\
--pstate=N (not for 10xx cards) Set the gpu power state (352.21+ driver)\n\
--plimit=N Set the gpu power limit (352.21+ driver)\n"
#endif
"";
static char const short_options[] =
#ifdef HAVE_SYSLOG_H
"S"
#endif
"a:c:i:Dhp:Px:nqr:R:s:t:T:o:u:O:Vd:f:m:N:b:eB";
static struct option const options[] =
{
{"algo", 1, NULL, 'a'},
{"api-bind", 1, NULL, 'b'},
{"background", 0, NULL, 'B'},
{"benchmark", 0, NULL, 1005},
{"cert", 1, NULL, 1001},
{"no-cpu-verify", 0, NULL, 1022},
{"config", 1, NULL, 'c'},
{"cputest", 0, NULL, 1006},
{"cpu-affinity", 1, NULL, 1020},
{"cpu-priority", 1, NULL, 1021},
{"cuda-schedule", 1, NULL, 1025},
{"debug", 0, NULL, 'D'},
{"help", 0, NULL, 'h'},
{"intensity", 1, NULL, 'i'},
{"ndevs", 0, NULL, 'n'},
{"no-color", 0, NULL, 1002},
{"no-gbt", 0, NULL, 1011},
{"no-longpoll", 0, NULL, 1003},
{"no-stratum", 0, NULL, 1007},
{"pass", 1, NULL, 'p'},
{"protocol-dump", 0, NULL, 'P'},
{"proxy", 1, NULL, 'x'},
{"quiet", 0, NULL, 'q'},
{"retries", 1, NULL, 'r'},
{"retry-pause", 1, NULL, 'R'},
{"scantime", 1, NULL, 's'},
{"statsavg", 1, NULL, 'N'},
#ifdef HAVE_SYSLOG_H
{"syslog", 0, NULL, 'S'},
{"syslog-prefix", 1, NULL, 1008},
#endif
{"threads", 1, NULL, 't'},
{"Disable extranounce support", 1, NULL, 'e'},
{"timeout", 1, NULL, 'T'},
{"url", 1, NULL, 'o'},
{"user", 1, NULL, 'u'},
{"userpass", 1, NULL, 'O'},
{"version", 0, NULL, 'V'},
{"devices", 1, NULL, 'd'},
{"diff-multiplier", 1, NULL, 'm'},
{"diff-factor", 1, NULL, 'f'},
{"diff", 1, NULL, 'f'}, // compat
{"gpu-clock", 1, NULL, 1070},
{"mem-clock", 1, NULL, 1071},
{"pstate", 1, NULL, 1072},
{"plimit", 1, NULL, 1073},
{"logfile", 1, NULL, 1074},
{0, 0, 0, 0}
};
struct work _ALIGN(64) g_work;
time_t g_work_time;
static pthread_mutex_t g_work_lock = PTHREAD_MUTEX_INITIALIZER;
#ifdef __linux /* Linux specific policy and affinity management */
#include <sched.h>
static inline void drop_policy(void)
{
struct sched_param param;
param.sched_priority = 0;
#ifdef SCHED_IDLE
if(unlikely(sched_setscheduler(0, SCHED_IDLE, ¶m) == -1))
#endif
#ifdef SCHED_BATCH
sched_setscheduler(0, SCHED_BATCH, ¶m);
#endif
}
static void affine_to_cpu_mask(int id, uint8_t mask)
{
cpu_set_t set;
CPU_ZERO(&set);
for(uint8_t i = 0; i < num_cpus; i++)
{
// cpu mask
if(mask & (1 << i))
{
CPU_SET(i, &set); printf("%d \n", i);
}
}
if(id == -1)
{
// process affinity
sched_setaffinity(0, sizeof(&set), &set);
}
else
{
// thread only
pthread_setaffinity_np(thr_info[id].pth, sizeof(&set), &set);
}
}
#elif defined(__FreeBSD__) /* FreeBSD specific policy and affinity management */
#include <sys/cpuset.h>
static inline void drop_policy(void)
{}
static void affine_to_cpu_mask(int id, uint8_t mask)
{
cpuset_t set;
CPU_ZERO(&set);
for(uint8_t i = 0; i < num_cpus; i++)
{
if(mask & (1 << i)) CPU_SET(i, &set);
}
cpuset_setaffinity(CPU_LEVEL_WHICH, CPU_WHICH_TID, -1, sizeof(cpuset_t), &set);
}
#else
#ifdef WIN32
static inline void drop_policy(void)
{}
static void affine_to_cpu_mask(int id, uint8_t mask)
{
if(id == -1)
SetProcessAffinityMask(GetCurrentProcess(), mask);
else
SetThreadAffinityMask(GetCurrentThread(), mask);
}
#else // OSX is not linux
static inline void drop_policy(void)
{
}
static void affine_to_cpu_mask(int id, uint8_t mask)
{
}
#endif
#endif
static bool get_blocktemplate(CURL *curl, struct work *work);
void get_currentalgo(char* buf, int sz)
{
snprintf(buf, sz, "%s", algo_names[opt_algo]);
}
/**
* Exit app
*/
static bool already_exiting = false; // make sure only one thread executes proper_exit()
void proper_exit(int reason)
{
extern struct stratum_ctx stratum;
if(already_exiting)
sleep(10);
else
{
already_exiting = true;
if(opt_n_threads > 0)
{
time_t start = time(NULL);
stop_mining = true;
applog(LOG_INFO, "stopping %d threads", opt_n_threads);
bool everything_stopped;
do
{
everything_stopped = true;
for(int i = 0; i < opt_n_threads; i++)
{
if(!mining_has_stopped[i])
everything_stopped = false;
}
} while(!everything_stopped && (time(NULL) - start) < 5);
applog(LOG_INFO, "resetting GPUs");
cuda_devicereset();
}
pthread_mutex_lock(&stratum.sock_lock);
curl_global_cleanup();
pthread_mutex_unlock(&stratum.sock_lock);
#ifdef WIN32
timeEndPeriod(1);
#endif
#ifdef USE_WRAPNVML
if(hnvml)
{
for(int n = 0; n < opt_n_threads; n++)
{
nvml_reset_clocks(hnvml, device_map[n]);
}
nvml_destroy(hnvml);
}
if(need_memclockrst)
{
#ifdef WIN32
for(int n = 0; n < opt_n_threads; n++)
{
nvapi_toggle_clocks(n, false);
}
#endif
}
#endif
}
if(opt_logfile)
fclose(logfilepointer);
sleep(1);
exit(reason);
}
static size_t jobj_binary(const json_t *obj, const char *key,
void *buf, size_t buflen)
{
const char *hexstr;
json_t *tmp;
tmp = json_object_get(obj, key);
if(unlikely(tmp == NULL))
{
applog(LOG_ERR, "JSON key '%s' not found", key);
return false;
}
hexstr = json_string_value(tmp);
if(unlikely(hexstr == NULL))
{
applog(LOG_ERR, "JSON key '%s' is not a string", key);
return false;
}
if(strlen(hexstr) / 2 <= buflen)
hex2bin((uchar*)buf, hexstr, buflen);
else
return 0;
return strlen(hexstr)/2;
}
static bool work_decode(const json_t *val, struct work *work)
{
const char *body, *header, *target;
int target_size;
int atarget_sz = ARRAY_SIZE(work->target);
int i;
size_t data_size = jobj_binary(val, "header", work->data, sizeof(work->data));
work->datasize = data_size;
int adata_sz = (int)data_size / 4;
target_size = (int)jobj_binary(val, "target", work->target, sizeof(work->target));
if(target_size != sizeof(work->target))
{
applog(LOG_ERR, "JSON invalid target", target_size);
return false;
}
//for(i = 0; i < atarget_sz; i++)
// work->target[i] = swab32((uint32_t)work->target + i);
if (opt_debug) {
char *hex_target;
hex_target = abin2hex((unsigned char*)&work->target, 32);
applog(LOG_WARNING, "Work target: %s", hex_target);
free(hex_target);
}
json_t *jr = json_object_get(val, "noncerange");
hex2bin((uchar*)work->noncerange.u64, "FFFFFFFF", 8);
/* use work ntime as job id (solo-mining) */
cbin2hex(work->job_id, (const char*)&work->data[18], 4);
return true;
}
/**
* Calculate the work difficulty as double
* Not sure it works with pools
*/
static void calc_diff(struct work *work, int known)
{
// sample for diff 32.53 : 00000007de5f0000
const uint64_t diffone = 0xFFFF000000000000ull;
uint64_t *data64, d64;
char rtarget[32];
swab256(rtarget, work->target);
data64 = (uint64_t *)(rtarget + 3); /* todo: index (3) can be tuned here */
d64 = swab64(*data64);
if(unlikely(!d64))
d64 = 1;
work->difficulty = (double)diffone / d64;
if(opt_difficulty > 0.)
{
work->difficulty /= opt_difficulty;
}
}
static int share_result(int result, const char *reason)
{
char s[32] = { 0 };
double hashrate = 0.;
pthread_mutex_lock(&stats_lock);
for(int i = 0; i < opt_n_threads; i++)
{
hashrate += stats_get_speed(i, thr_hashrates[i]);
}
result ? accepted_count++ : rejected_count++;
pthread_mutex_unlock(&stats_lock);
global_hashrate = llround(hashrate);
format_hashrate(hashrate, s);
applog(LOG_NOTICE, "accepted: %lu/%lu (%.2f%%), %s %s",
accepted_count,
accepted_count + rejected_count,
100. * accepted_count / (accepted_count + rejected_count),
s,
use_colors ?
(result ? CL_GRN "yay!!!" : CL_RED "booooo")
: (result ? "(yay!!!)" : "(booooo)"));
if(reason)
{
applog(LOG_WARNING, "reject reason: %s", reason);
if(strncmp(reason, "Duplicate share", 15) == 0 && !check_dups)
{
applog(LOG_WARNING, "enabling duplicates check feature");
check_dups = true;
}
return 0;
}
return 1;
}
static bool submit_upstream_work(CURL *curl, struct work *work) {
json_t *val, *res, *reason;
bool stale_work = false;
char s[384];
/* discard if a newer block was received */
stale_work = !send_stale && (work->height && work->height < g_work.height);
if (have_stratum && !stale_work)
{
pthread_mutex_lock(&g_work_lock);
if (strlen(work->job_id + 8))
{
if (!send_stale && strncmp(work->job_id + 8, g_work.job_id + 8, sizeof(g_work.job_id) - 8) != 0)
stale_work = true;
else
stale_work = false;
}
if (!send_stale && stale_work)
{
if (opt_debug) applog(LOG_DEBUG, "outdated job %s, new %s",
work->job_id + 8, g_work.job_id + 8);
}
pthread_mutex_unlock(&g_work_lock);
}
if (!have_stratum && !stale_work && allow_gbt)
{
struct work wheight = { 0 };
if (get_blocktemplate(curl, &wheight))
{
if (work->height && work->height < wheight.height)
{
if (opt_debug)
applog(LOG_WARNING, "block %u was already solved", work->height, wheight.height);
return true;
}
}
}
if (!send_stale && stale_work)
{
// if(opt_debug)
applog(LOG_WARNING, "stale share detected, discarding");
rejected_count++;
return true;
}
calc_diff(work, 0);
if (have_stratum)
{
uint32_t nonce_ex, nonce;
char *nonceexstr, *noncestr;
uint32_t sent = 0;
le32enc(&nonce_ex, work->data[23]);
le32enc(&nonce, work->data[24]);
nonceexstr = bin2hex((const unsigned char *)(&nonce_ex), 4);
noncestr = bin2hex((const unsigned char *)(&nonce), 4);
if (check_dups)
sent = hashlog_already_submittted(work->job_id, nonce);
if (sent > 0)
{
sent = (uint32_t)time(NULL) - sent;
if (!opt_quiet)
{
applog(LOG_WARNING, "nonce %s was already sent %u seconds ago", noncestr, sent);
hashlog_dump_job(work->job_id);
}
free(nonceexstr);
free(noncestr);
// prevent useless computing on some pools
g_work_time = 0;
restart_threads();
return true;
}
sprintf(s,
"{\"method\": \"mining.submit\", \"params\": [\"%s\", \"%s\", \"%s\", \"0\", \"%s\"], \"id\":4}",
rpc_user, work->job_id, nonceexstr, noncestr);
free(nonceexstr);
free(noncestr);
gettimeofday(&stratum.tv_submit, NULL);
if (unlikely(!stratum_send_line(&stratum, s)))
{
applog(LOG_ERR, "submit_upstream_work stratum_send_line failed");
return false;
}
if (check_dups)
hashlog_remember_submit(work, nonce);
}
else
{
applog(LOG_WARNING, "Submitting found block to daemon...");
/* build hex string */
char *str = NULL;
int curl_err = 0;
str = bin2hex((uchar*)work->data, work->datasize);
if (unlikely(!str))
{
applog(LOG_ERR, "submit_upstream_work OOM");
return false;
}
/* build JSON-RPC request */
sprintf(s,
"{\"header\": \"%s\"}\r\n",
str);
if (opt_debug)
applog(LOG_WARNING, "Submitting: %s", s);
/* issue JSON-RPC request */
val = json_rpc_ZP(curl, rpc_url, "/blockchain/submitheader", s,
false, true, &curl_err);
if ( curl_err == -1 )
{
applog(LOG_ERR, "submit_upstream_work json_rpc_call failed");
return false;
}
//if (check_dups)
// hashlog_purge_job(work->job_id);
json_decref(val);
free(str);
}
return true;
}
/* simplified method to only get some extra infos in solo mode */
static bool gbt_work_decode(const json_t *val, struct work *work)
{
json_t *header = json_object_get(val, "header");
if(!header)
{
allow_gbt = false;
applog(LOG_INFO, "GBT not supported, block header unavailable");
return false;
}
if(!work->height)
{
// complete missing data from getwork
json_t *key = json_object_get(val, "blockNumber");
if(key && json_is_integer(key))
{
work->height = (uint32_t)json_integer_value(key);
if(!opt_quiet && work->height > g_work.height)
{
if(!have_stratum && allow_mininginfo && global_diff > 0)
{
char netinfo[64] = { 0 };
char srate[32] = { 0 };
sprintf(netinfo, "diff %.2f", global_diff);
if(net_hashrate)
{
format_hashrate((double)net_hashrate, srate);
strcat(netinfo, ", net ");
strcat(netinfo, srate);
}
applog(LOG_BLUE, "%s block %d, %s", algo_names[opt_algo], work->height, netinfo);
}
else
{
applog(LOG_BLUE, "%s %s block %d", short_url,
algo_names[opt_algo], work->height);
}
g_work.height = work->height;
if(!have_stratum)
{
double x = expectedblocktime(work->target);
if(x != 0.0)
applog(LOG_BLUE, "50%% chance to find a block in about %.2f days", x);
}
}
}
}
return true;
}
static bool get_blocktemplate(CURL *curl, struct work *work)
{
if(!allow_gbt)
return false;
int curl_err = 0;
json_t *val = json_rpc_ZP(curl, rpc_url, "/blockchain/blocktemplate", NULL,
have_longpoll, false, &curl_err);
if(!val && curl_err == -1)
{
// when getblocktemplate is not supported, disable it
allow_gbt = false;
if(!opt_quiet)
{
applog(LOG_BLUE, "gbt not supported, block height notices disabled");
}
return false;
}
bool rc = gbt_work_decode(val, work);
json_decref(val);
return rc;
}
static bool get_mininginfo(CURL *curl, struct work *work)
{
if(have_stratum || !allow_mininginfo)
return false;
int curl_err = 0;
json_t *val = json_rpc_ZP(curl, rpc_url, "/blockchain/info", NULL,
have_longpoll, false, &curl_err);
if(!val && curl_err == -1)
{
allow_mininginfo = false;
if(opt_debug)
{
applog(LOG_DEBUG, "/blockchain/info not supported");
}
return false;
}
else
{
json_t *res = json_object_get(val, "result");
// "blocks": 491493 (= current work height - 1)
// "difficulty": 0.99607860999999998
// "networkhashps": 56475980
if(res)
{
json_t *key = json_object_get(val, "difficulty");
if(key && json_is_real(key))
{
global_diff = json_real_value(key);
//net_hashrate
}
}
}
json_decref(val);
return true;
}
// time (in days) for a 50% chance to find a block
double expectedblocktime(const uint32_t *target)
{
double x = 0.0;
if(global_hashrate == 0)
return 0;
else
{
for(int i = 0; i < 8; i++)
{
x *= 4294967296.0;
x += target[7 - i];
}
if(x != 0.0)
return 115792089237316195423570985008687907853269984665640564039457584007913129639935.0 / x / (double)global_hashrate / 86400.0;
else
return 0.0;
}
}
static bool get_upstream_work(CURL *curl, struct work *work)
{
json_t *val;
bool rc;
int curl_err = 0;
struct timeval tv_start, tv_end, diff;
gettimeofday(&tv_start, NULL);
val = json_rpc_ZP(curl, rpc_url, "/blockchain/blocktemplate", NULL,
have_longpoll, false, &curl_err);
gettimeofday(&tv_end, NULL);
if(have_stratum)
{
if(val)
json_decref(val);
return true;
}
if(!val)
return false;
rc = work_decode( val, work);
if(opt_protocol && rc)
{
timeval_subtract(&diff, &tv_end, &tv_start);
/* show time because curl can be slower against versions/config */
applog(LOG_DEBUG, "got new work in %.2f ms",
(1000.0 * diff.tv_sec) + (0.001 * diff.tv_usec));
}
json_decref(val);
get_mininginfo(curl, work);
get_blocktemplate(curl, work);
return rc;
}
static void workio_cmd_free(struct workio_cmd *wc)
{
if(!wc)
return;
switch(wc->cmd)
{
case WC_SUBMIT_WORK:
aligned_free(wc->u.work);
break;
default: /* do nothing */
break;
}
memset(wc, 0, sizeof(*wc)); /* poison */
free(wc);
}
static bool workio_get_work(struct workio_cmd *wc, CURL *curl)
{
struct work *ret_work;
int failures = 0;
ret_work = (struct work*)aligned_calloc(sizeof(*ret_work));
if(!ret_work)
return false;
/* obtain new work from bitcoin via JSON-RPC */
while(!get_upstream_work(curl, ret_work))
{
if(unlikely((opt_retries >= 0) && (++failures > opt_retries)))
{
applog(LOG_ERR, "json_rpc_call failed, terminating workio thread");
aligned_free(ret_work);
return false;
}
/* pause, then restart work-request loop */
applog(LOG_ERR, "json_rpc_call failed, retry after %d seconds",
opt_fail_pause);
sleep(opt_fail_pause);
}
/* send work to requesting thread */
if(!tq_push(wc->thr->q, ret_work))
aligned_free(ret_work);
return true;
}
static bool workio_submit_work(struct workio_cmd *wc, CURL *curl)
{
int failures = 0;
/* submit solution to bitcoin via JSON-RPC */
while(!submit_upstream_work(curl, wc->u.work))
{
if(unlikely((opt_retries >= 0) && (++failures > opt_retries)))
{
applog(LOG_ERR, "...terminating workio thread");
return false;
}
/* pause, then restart work-request loop */
if(!opt_benchmark)
applog(LOG_ERR, "...retry after %d seconds", opt_fail_pause);
sleep(opt_fail_pause);
}
return true;
}
static void *workio_thread(void *userdata)
{
struct thr_info *mythr = (struct thr_info*)userdata;
CURL *curl;
bool ok = true;
curl = curl_easy_init();
if(unlikely(!curl))