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ccminer.cpp
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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();
#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;
};
static const char *algo_names[] = {
"bitcoin",
"blake",
"blakecoin",
"c11",
"deep",
"dmd-gr",
"doom", /* is luffa */
"fresh",
"fugue256",
"groestl",
"keccak",
"jackpot",
"luffa",
"lyra2v2",
"myr-gr",
"nist5",
"penta",
"quark",
"qubit",
"sia",
"skein",
"s3",
"whirl",
"whirlpoolx",
"x11",
"x13",
"x14",
"x15",
"x17",
"vanilla",
"neoscrypt"
};
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 = false;
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 = 10;
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;
int opt_n_threads = 0;
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;
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};
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];
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;
bool stratum_need_reset = false;
struct work_restart *work_restart = NULL;
struct stratum_ctx stratum = { 0 };
bool stop_mining = false;
volatile bool mining_has_stopped[MAX_GPUS];
pthread_mutex_t applog_lock = PTHREAD_MUTEX_INITIALIZER;
static pthread_mutex_t stats_lock = PTHREAD_MUTEX_INITIALIZER;
uint32_t accepted_count = 0L;
uint32_t rejected_count = 0L;
static 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 = 4068; /* 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 specify the hash algorithm to use\n\
bitcoin Bitcoin\n\
blake Blake 256 (SFR/NEOS)\n\
blakecoin Fast Blake 256 (8 rounds)\n\
c11 X11 variant\n\
deep Deepcoin\n\
dmd-gr Diamond-Groestl\n\
fresh Freshcoin (shavite 80)\n\
fugue256 Fuguecoin\n\
groestl Groestlcoin\n\
jackpot Jackpot (JHA)\n\
keccak Keccak-256 (Maxcoin)\n\
luffa Doomcoin\n\
lyra2v2 VertCoin\n\
myr-gr Myriad-Groestl\n\
neoscrypt neoscrypt (FeatherCoin)\n\
nist5 NIST5 (TalkCoin)\n\
penta Pentablake hash (5x Blake 512)\n\
quark Quark\n\
qubit Qubit\n\
sia Siacoin (at pools compatible to siamining.com) \n\
skein Skein SHA2 (Skeincoin)\n\
s3 S3 (1Coin)\n\
x11 X11 (DarkCoin)\n\
x13 X13 (MaruCoin)\n\
x14 X14\n\
x15 X15\n\
x17 X17 (peoplecurrency)\n\
vanilla Blake 256 8 rounds\n\
whirl Whirlcoin (old whirlpool)\n\
whirlpoolx Vanillacoin \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\
-b, --api-bind IP/Port for the miner API (default: 127.0.0.1:4068)\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 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[] =
#ifndef WIN32
"B"
#endif
#ifdef HAVE_SYSLOG_H
"S"
#endif
"a:c:i:Dhp:Px:nqr:R:s:t:T:o:u:O:Vd:f:m:N:b:e";
static struct option const options[] =
{
{ "algo", 1, NULL, 'a' },
{ "api-bind", 1, NULL, 'b' },
#ifndef WIN32
{ "background", 0, NULL, 'B' },
#endif
{ "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 },
{ "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},
{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 /* Windows */
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);
}
#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
*/
void proper_exit(int reason)
{
#ifdef USE_WRAPNVML
if(hnvml)
nvml_destroy(hnvml);
#endif
// if(reason == 2)
{
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);
applog(LOG_INFO, "resetting GPUs");
cuda_devicereset();
}
if(opt_syslog_pfx) free(opt_syslog_pfx);
curl_global_cleanup();
#ifdef WIN32
timeEndPeriod(1);
#endif
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)
{
int target_size;
int midstate_size = sizeof(work->midstate);
int atarget_sz = ARRAY_SIZE(work->target);
int i;
size_t data_size = jobj_binary(val, "data", work->data, sizeof(work->data));
if(opt_algo != ALGO_NEO && data_size != 128)
{
applog(LOG_ERR, "JSON invalid data");
return false;
}
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 < adata_sz; i++)
work->data[i] = le32dec(work->data + i);
for(i = 0; i < atarget_sz; i++)
work->target[i] = le32dec(work->target + i);
json_t *jr = json_object_get(val, "noncerange");
if(jr)
{
const char * hexstr = json_string_value(jr);
if(likely(hexstr))
{
// never seen yet...
hex2bin((uchar*)work->noncerange.u64, hexstr, 8);
applog(LOG_DEBUG, "received noncerange: %08x-%08x",
work->noncerange.u32[0], work->noncerange.u32[1]);
}
}
/* use work ntime as job id (solo-mining) */
cbin2hex(work->job_id, (const char*)&work->data[17], 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 = work->height && work->height < g_work.height;
if (have_stratum && !stale_work) {
pthread_mutex_lock(&g_work_lock);
if (strlen(work->job_id + 8))
stale_work = strcmp(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(stale_work)
{
if(opt_debug)
applog(LOG_WARNING, "stale work detected, discarding");
return true;
}
calc_diff(work, 0);
if(have_stratum)
{
uint32_t sent = 0;
uint32_t ntime, nonce;
char *ntimestr, *noncestr, *xnonce2str;
if(opt_algo != ALGO_SIA)
{
le32enc(&ntime, work->data[17]);
le32enc(&nonce, work->data[19]);
noncestr = bin2hex((const uchar*)(&nonce), 4);
ntimestr = bin2hex((const uchar*)(&ntime), 4);
}
else
{
le32enc(&ntime, work->data[10]);
uint64_t ntime64 = ntime;
le32enc(&nonce, work->data[8]);
uint64_t nonce64 = nonce;
le32enc(&nonce, work->data[9]);
nonce64 += (uint64_t)nonce << 32;
noncestr = bin2hex((const uchar*)(&nonce64), 8);
ntimestr = bin2hex((const uchar*)(&ntime64), 8);
}
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(noncestr);
// prevent useless computing on some pools
g_work_time = 0;
restart_threads();
return true;
}
xnonce2str = bin2hex(work->xnonce2, work->xnonce2_len);
sprintf(s,
"{\"method\": \"mining.submit\", \"params\": [\"%s\", \"%s\", \"%s\", \"%s\", \"%s\"], \"id\":4}",
rpc_user, work->job_id + 8, xnonce2str, ntimestr, noncestr);
free(xnonce2str);
free(ntimestr);
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
{
/* build hex string */
char *str = NULL;
for(int i = 0; i < (work->datasize >> 2); i++)
le32enc(work->data + i, work->data[i]);
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,
"{\"method\": \"getwork\", \"params\": [\"%s\"], \"id\":4}\r\n",
str);
/* issue JSON-RPC request */
val = json_rpc_call(curl, rpc_url, rpc_userpass, s, false, false, NULL);
if(unlikely(!val))
{
applog(LOG_ERR, "submit_upstream_work json_rpc_call failed");
return false;
}
res = json_object_get(val, "result");
reason = json_object_get(val, "reject-reason");
if(!share_result(json_is_true(res), reason ? json_string_value(reason) : NULL))
{
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 *err = json_object_get(val, "error");
if(err && !json_is_null(err))
{
allow_gbt = false;
applog(LOG_INFO, "GBT not supported, block height unavailable");
return false;
}
if(!work->height)
{
// complete missing data from getwork
json_t *key = json_object_get(val, "height");
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;
}
#define GBT_CAPABILITIES "[\"coinbasetxn\", \"coinbasevalue\", \"longpoll\", \"workid\"]"
static const char *gbt_req =
"{\"method\": \"getblocktemplate\", \"params\": ["
// "{\"capabilities\": " GBT_CAPABILITIES "}"
"], \"id\":9}\r\n";
static bool get_blocktemplate(CURL *curl, struct work *work)
{
if(!allow_gbt)
return false;
int curl_err = 0;
json_t *val = json_rpc_call(curl, rpc_url, rpc_userpass, gbt_req,
want_longpoll, have_longpoll, &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(json_object_get(val, "result"), work);
json_decref(val);
return rc;
}
// good alternative for wallet mining, difficulty and net hashrate
static const char *info_req =
"{\"method\": \"getmininginfo\", \"params\": [], \"id\":8}\r\n";
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_call(curl, rpc_url, rpc_userpass, info_req,
want_longpoll, have_longpoll, &curl_err);
if(!val && curl_err == -1)
{
allow_mininginfo = false;
if(opt_debug)
{
applog(LOG_DEBUG, "getmininginfo 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(res, "powdifficulty");
if(key && json_is_real(key))
{
global_diff = json_real_value(key);
}
key = json_object_get(res, "difficulty");
if(key && json_is_real(key))
{
global_diff = json_real_value(key);
}
key = json_object_get(res, "networkhashps");
if(key && json_is_integer(key))
{
net_hashrate = json_integer_value(key);
}
key = json_object_get(res, "blocks");
if(key && json_is_integer(key))
{
net_blocks = json_integer_value(key);
}
}
}
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 const char *rpc_req =
"{\"method\": \"getwork\", \"params\": [], \"id\":0}\r\n";
static bool get_upstream_work(CURL *curl, struct work *work)
{
json_t *val;
bool rc;
struct timeval tv_start, tv_end, diff;
gettimeofday(&tv_start, NULL);
val = json_rpc_call(curl, rpc_url, rpc_userpass, rpc_req,
want_longpoll, false, NULL);
gettimeofday(&tv_end, NULL);
if(have_stratum)
{
if(val)
json_decref(val);
return true;
}
if(!val)
return false;
rc = work_decode(json_object_get(val, "result"), 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);