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cpu-miner.c
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cpu-miner.c
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/*
* Copyright 2010 Jeff Garzik
* Copyright 2012-2014 pooler
*
* 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.
*/
#include "cpuminer-config.h"
#define _GNU_SOURCE
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <stdbool.h>
#include <inttypes.h>
#include <unistd.h>
#include <sys/time.h>
#include <time.h>
#ifdef WIN32
#include <windows.h>
#else
#include <errno.h>
#include <signal.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
#include <jansson.h>
#include <curl/curl.h>
#include "compat.h"
#include "miner.h"
#define PROGRAM_NAME "minerd"
#define LP_SCANTIME 60
#define JSON_BUF_LEN 345
#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 inline void affine_to_cpu(int id, int cpu) {
cpu_set_t set;
CPU_ZERO(&set);
CPU_SET(cpu, &set);
sched_setaffinity(0, sizeof(set), &set);
}
#elif defined(__FreeBSD__) /* FreeBSD specific policy and affinity management */
#include <sys/cpuset.h>
static inline void drop_policy(void)
{
}
static inline void affine_to_cpu(int id, int cpu)
{
cpuset_t set;
CPU_ZERO(&set);
CPU_SET(cpu, &set);
cpuset_setaffinity(CPU_LEVEL_WHICH, CPU_WHICH_TID, -1, sizeof(cpuset_t), &set);
}
#else
static inline void drop_policy(void)
{
}
static inline void affine_to_cpu(int id, int cpu)
{
}
#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;
};
enum mining_algo {
ALGO_SCRYPT, /* scrypt(1024,1,1) */
ALGO_SHA256D, /* SHA-256d */
ALGO_KECCAK, /* Keccak */
ALGO_HEAVY, /* Heavy */
ALGO_QUARK, /* Quark */
ALGO_SKEIN, /* Skein */
ALGO_SHAVITE3, /* Shavite3 */
ALGO_BLAKE, /* Blake */
ALGO_X11, /* X11 */
ALGO_CRYPTONIGHT, /* CryptoNight */
};
static const char *algo_names[] = {
[ALGO_SCRYPT] = "scrypt",
[ALGO_SHA256D] = "sha256d",
[ALGO_KECCAK] = "keccak",
[ALGO_HEAVY] = "heavy",
[ALGO_QUARK] = "quark",
[ALGO_SKEIN] = "skein",
[ALGO_SHAVITE3] = "shavite3",
[ALGO_BLAKE] = "blake",
[ALGO_X11] = "x11",
[ALGO_CRYPTONIGHT] = "cryptonight",
};
bool opt_debug = false;
bool opt_protocol = false;
static bool opt_benchmark = false;
bool opt_redirect = true;
bool want_longpoll = true;
bool have_longpoll = false;
bool want_stratum = true;
bool have_stratum = false;
static bool submit_old = false;
bool use_syslog = false;
static bool opt_background = false;
static bool opt_quiet = false;
static int opt_retries = -1;
static int opt_fail_pause = 10;
bool jsonrpc_2 = false;
int opt_timeout = 0;
static int opt_scantime = 5;
static json_t *opt_config;
static const bool opt_time = true;
static enum mining_algo opt_algo = ALGO_SCRYPT;
static int opt_n_threads;
static int num_processors;
static char *rpc_url;
static char *rpc_userpass;
static char *rpc_user, *rpc_pass;
char *opt_cert;
char *opt_proxy;
long opt_proxy_type;
struct thr_info *thr_info;
static int work_thr_id;
int longpoll_thr_id = -1;
int stratum_thr_id = -1;
struct work_restart *work_restart = NULL;
static struct stratum_ctx stratum;
static char rpc2_id[64] = "";
static char *rpc2_blob = NULL;
static int rpc2_bloblen = 0;
static uint32_t rpc2_target = 0;
static char *rpc2_job_id = NULL;
pthread_mutex_t applog_lock;
static pthread_mutex_t stats_lock;
static pthread_mutex_t rpc2_job_lock;
static pthread_mutex_t rpc2_login_lock;
static unsigned long accepted_count = 0L;
static unsigned long rejected_count = 0L;
static double *thr_hashrates;
#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 algorithm to use\n\
scrypt scrypt(1024, 1, 1) (default)\n\
sha256d SHA-256d\n\
keccak Keccak\n\
quark Quark\n\
heavy Heavy\n\
skein Skein\n\
shavite3 Shavite3\n\
blake Blake\n\
x11 X11\n\
cryptonight CryptoNight\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 processors)\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 timeout for long polling, in seconds (default: none)\n\
-s, --scantime=N upper bound on time spent scanning current work when\n\
long polling is unavailable, in seconds (default: 5)\n\
--no-longpoll disable X-Long-Polling support\n\
--no-stratum disable X-Stratum support\n\
--no-redirect ignore requests to change the URL of the mining server\n\
-q, --quiet disable per-thread hashmeter output\n\
-D, --debug enable debug output\n\
-P, --protocol-dump verbose dump of protocol-level activities\n"
#ifdef HAVE_SYSLOG_H
"\
-S, --syslog use system log for output messages\n"
#endif
#ifndef WIN32
"\
-B, --background run the miner in the background\n"
#endif
"\
--benchmark run in offline benchmark mode\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\
";
static char const short_options[] =
#ifndef WIN32
"B"
#endif
#ifdef HAVE_SYSLOG_H
"S"
#endif
"a:c:Dhp:Px:qr:R:s:t:T:o:u:O:V";
static struct option const options[] = {
{ "algo", 1, NULL, 'a' },
#ifndef WIN32
{ "background", 0, NULL, 'B' },
#endif
{ "benchmark", 0, NULL, 1005 },
{ "cert", 1, NULL, 1001 },
{ "config", 1, NULL, 'c' },
{ "debug", 0, NULL, 'D' },
{ "help", 0, NULL, 'h' },
{ "no-longpoll", 0, NULL, 1003 },
{ "no-redirect", 0, NULL, 1009 },
{ "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' },
#ifdef HAVE_SYSLOG_H
{ "syslog", 0, NULL, 'S' },
#endif
{ "threads", 1, NULL, 't' },
{ "timeout", 1, NULL, 'T' },
{ "url", 1, NULL, 'o' },
{ "user", 1, NULL, 'u' },
{ "userpass", 1, NULL, 'O' },
{ "version", 0, NULL, 'V' },
{ 0, 0, 0, 0 }
};
static struct work g_work;
static time_t g_work_time;
static pthread_mutex_t g_work_lock;
static bool rpc2_login(CURL *curl);
static void workio_cmd_free(struct workio_cmd *wc);
json_t *json_rpc2_call_recur(CURL *curl, const char *url,
const char *userpass, json_t *rpc_req,
int *curl_err, int flags, int recur) {
if(recur >= 5) {
if(opt_debug)
applog(LOG_DEBUG, "Failed to call rpc command after %i tries", recur);
return NULL;
}
if(!strcmp(rpc2_id, "")) {
if(opt_debug)
applog(LOG_DEBUG, "Tried to call rpc2 command before authentication");
return NULL;
}
json_t *params = json_object_get(rpc_req, "params");
if (params) {
json_t *auth_id = json_object_get(params, "id");
if (auth_id) {
json_string_set(auth_id, rpc2_id);
}
}
json_t *res = json_rpc_call(curl, url, userpass, json_dumps(rpc_req, 0),
curl_err, flags | JSON_RPC_IGNOREERR);
if(!res) goto end;
json_t *error = json_object_get(res, "error");
if(!error) goto end;
json_t *message;
if(json_is_string(error))
message = error;
else
message = json_object_get(error, "message");
if(!message || !json_is_string(message)) goto end;
const char *mes = json_string_value(message);
if(!strcmp(mes, "Unauthenticated")) {
pthread_mutex_lock(&rpc2_login_lock);
rpc2_login(curl);
sleep(1);
pthread_mutex_unlock(&rpc2_login_lock);
return json_rpc2_call_recur(curl, url, userpass, rpc_req,
curl_err, flags, recur + 1);
} else if(!strcmp(mes, "Low difficulty share") || !strcmp(mes, "Block expired") || !strcmp(mes, "Invalid job id") || !strcmp(mes, "Duplicate share")) {
json_t *result = json_object_get(res, "result");
if(!result) {
goto end;
}
json_object_set(result, "reject-reason", json_string(mes));
} else {
applog(LOG_ERR, "json_rpc2.0 error: %s", mes);
return NULL;
}
end:
return res;
}
json_t *json_rpc2_call(CURL *curl, const char *url,
const char *userpass, const char *rpc_req,
int *curl_err, int flags) {
return json_rpc2_call_recur(curl, url, userpass, JSON_LOADS(rpc_req, NULL),
curl_err, flags, 0);
}
static inline void work_free(struct work *w) {
free(w->job_id);
free(w->xnonce2);
}
static inline void work_copy(struct work *dest, const struct work *src) {
memcpy(dest, src, sizeof(struct work));
if (src->job_id)
dest->job_id = strdup(src->job_id);
if (src->xnonce2) {
dest->xnonce2 = malloc(src->xnonce2_len);
memcpy(dest->xnonce2, src->xnonce2, src->xnonce2_len);
}
}
static bool 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)) {
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;
}
bool rpc2_job_decode(const json_t *job, struct work *work) {
if (!jsonrpc_2) {
applog(LOG_ERR, "Tried to decode job without JSON-RPC 2.0");
return false;
}
json_t *tmp;
tmp = json_object_get(job, "job_id");
if (!tmp) {
applog(LOG_ERR, "JSON inval job id");
goto err_out;
}
const char *job_id = json_string_value(tmp);
tmp = json_object_get(job, "blob");
if (!tmp) {
applog(LOG_ERR, "JSON inval blob");
goto err_out;
}
const char *hexblob = json_string_value(tmp);
int blobLen = strlen(hexblob);
if (blobLen % 2 != 0 || ((blobLen / 2) < 40 && blobLen != 0) || (blobLen / 2) > 128) {
applog(LOG_ERR, "JSON invalid blob length");
goto err_out;
}
if (blobLen != 0) {
pthread_mutex_lock(&rpc2_job_lock);
char *blob = malloc(blobLen / 2);
if (!hex2bin(blob, hexblob, blobLen / 2)) {
applog(LOG_ERR, "JSON inval blob");
pthread_mutex_unlock(&rpc2_job_lock);
goto err_out;
}
if (rpc2_blob) {
free(rpc2_blob);
}
rpc2_bloblen = blobLen / 2;
rpc2_blob = malloc(rpc2_bloblen);
memcpy(rpc2_blob, blob, blobLen / 2);
free(blob);
uint32_t target;
jobj_binary(job, "target", &target, 4);
if(rpc2_target != target) {
float hashrate = 0.;
pthread_mutex_lock(&stats_lock);
for (size_t i = 0; i < opt_n_threads; i++)
hashrate += thr_hashrates[i];
pthread_mutex_unlock(&stats_lock);
double difficulty = (((double) 0xffffffff) / target);
applog(LOG_INFO, "Pool set diff to %g", difficulty);
rpc2_target = target;
}
if (rpc2_job_id) {
free(rpc2_job_id);
}
rpc2_job_id = strdup(job_id);
pthread_mutex_unlock(&rpc2_job_lock);
}
if(work) {
if (!rpc2_blob) {
applog(LOG_ERR, "Requested work before work was received");
goto err_out;
}
memcpy(work->data, rpc2_blob, rpc2_bloblen);
memset(work->target, 0xff, sizeof(work->target));
work->target[7] = rpc2_target;
if (work->job_id)
free(work->job_id);
work->job_id = strdup(rpc2_job_id);
}
return true;
err_out:
return false;
}
static bool work_decode(const json_t *val, struct work *work) {
int i;
if(jsonrpc_2) {
return rpc2_job_decode(val, work);
}
if (unlikely(!jobj_binary(val, "data", work->data, sizeof(work->data)))) {
applog(LOG_ERR, "JSON inval data");
goto err_out;
}
if (unlikely(!jobj_binary(val, "target", work->target, sizeof(work->target)))) {
applog(LOG_ERR, "JSON inval target");
goto err_out;
}
for (i = 0; i < ARRAY_SIZE(work->data); i++)
work->data[i] = le32dec(work->data + i);
for (i = 0; i < ARRAY_SIZE(work->target); i++)
work->target[i] = le32dec(work->target + i);
return true;
err_out: return false;
}
bool rpc2_login_decode(const json_t *val) {
const char *id;
const char *s;
json_t *res = json_object_get(val, "result");
if(!res) {
applog(LOG_ERR, "JSON invalid result");
goto err_out;
}
json_t *tmp;
tmp = json_object_get(res, "id");
if(!tmp) {
applog(LOG_ERR, "JSON inval id");
goto err_out;
}
id = json_string_value(tmp);
if(!id) {
applog(LOG_ERR, "JSON id is not a string");
goto err_out;
}
memcpy(&rpc2_id, id, 64);
if(opt_debug)
applog(LOG_DEBUG, "Auth id: %s", id);
tmp = json_object_get(res, "status");
if(!tmp) {
applog(LOG_ERR, "JSON inval status");
goto err_out;
}
s = json_string_value(tmp);
if(!s) {
applog(LOG_ERR, "JSON status is not a string");
goto err_out;
}
if(strcmp(s, "OK")) {
applog(LOG_ERR, "JSON returned status \"%s\"", s);
return false;
}
return true;
err_out: return false;
}
static void share_result(int result, struct work *work, const char *reason) {
char s[345];
double hashrate;
int i;
hashrate = 0.;
pthread_mutex_lock(&stats_lock);
for (i = 0; i < opt_n_threads; i++)
hashrate += thr_hashrates[i];
result ? accepted_count++ : rejected_count++;
pthread_mutex_unlock(&stats_lock);
switch (opt_algo) {
case ALGO_CRYPTONIGHT:
applog(LOG_INFO, "accepted: %lu/%lu (%.2f%%), %.2f H/s at diff %g %s",
accepted_count, accepted_count + rejected_count,
100. * accepted_count / (accepted_count + rejected_count), hashrate,
(((double) 0xffffffff) / (work ? work->target[7] : rpc2_target)),
result ? "(yay!!!)" : "(booooo)");
break;
default:
sprintf(s, hashrate >= 1e6 ? "%.0f" : "%.2f", 1e-3 * hashrate);
applog(LOG_INFO, "accepted: %lu/%lu (%.2f%%), %s khash/s %s",
accepted_count, accepted_count + rejected_count,
100. * accepted_count / (accepted_count + rejected_count), s,
result ? "(yay!!!)" : "(booooo)");
break;
}
if (opt_debug && reason)
applog(LOG_DEBUG, "DEBUG: reject reason: %s", reason);
}
static bool submit_upstream_work(CURL *curl, struct work *work) {
char *str = NULL;
json_t *val, *res, *reason;
char s[JSON_BUF_LEN];
int i;
bool rc = false;
/* pass if the previous hash is not the current previous hash */
if (!submit_old && memcmp(work->data + 1, g_work.data + 1, 32)) {
if (opt_debug)
applog(LOG_DEBUG, "DEBUG: stale work detected, discarding");
return true;
}
if (have_stratum) {
uint32_t ntime, nonce;
char *ntimestr, *noncestr, *xnonce2str;
if (jsonrpc_2) {
noncestr = bin2hex(((const unsigned char*)work->data) + 39, 4);
char hash[32];
switch(opt_algo) {
case ALGO_CRYPTONIGHT:
default:
cryptonight_hash(hash, work->data, 76);
}
char *hashhex = bin2hex(hash, 32);
snprintf(s, JSON_BUF_LEN,
"{\"method\": \"submit\", \"params\": {\"id\": \"%s\", \"job_id\": \"%s\", \"nonce\": \"%s\", \"result\": \"%s\"}, \"id\":1}\r\n",
rpc2_id, work->job_id, noncestr, hashhex);
free(hashhex);
} else {
le32enc(&ntime, work->data[17]);
le32enc(&nonce, work->data[19]);
ntimestr = bin2hex((const unsigned char *) (&ntime), 4);
noncestr = bin2hex((const unsigned char *) (&nonce), 4);
xnonce2str = bin2hex(work->xnonce2, work->xnonce2_len);
snprintf(s, JSON_BUF_LEN,
"{\"method\": \"mining.submit\", \"params\": [\"%s\", \"%s\", \"%s\", \"%s\", \"%s\"], \"id\":4}",
rpc_user, work->job_id, xnonce2str, ntimestr, noncestr);
free(ntimestr);
free(xnonce2str);
}
free(noncestr);
if (unlikely(!stratum_send_line(&stratum, s))) {
applog(LOG_ERR, "submit_upstream_work stratum_send_line failed");
goto out;
}
} else {
/* build JSON-RPC request */
if(jsonrpc_2) {
char *noncestr = bin2hex(((const unsigned char*)work->data) + 39, 4);
char hash[32];
switch(opt_algo) {
case ALGO_CRYPTONIGHT:
default:
cryptonight_hash(hash, work->data, 76);
}
char *hashhex = bin2hex(hash, 32);
snprintf(s, JSON_BUF_LEN,
"{\"method\": \"submit\", \"params\": {\"id\": \"%s\", \"job_id\": \"%s\", \"nonce\": \"%s\", \"result\": \"%s\"}, \"id\":1}\r\n",
rpc2_id, work->job_id, noncestr, hashhex);
free(noncestr);
free(hashhex);
/* issue JSON-RPC request */
val = json_rpc2_call(curl, rpc_url, rpc_userpass, s, NULL, 0);
if (unlikely(!val)) {
applog(LOG_ERR, "submit_upstream_work json_rpc_call failed");
goto out;
}
res = json_object_get(val, "result");
json_t *status = json_object_get(res, "status");
reason = json_object_get(res, "reject-reason");
share_result(!strcmp(status ? json_string_value(status) : "", "OK"), work,
reason ? json_string_value(reason) : NULL );
} else {
/* build hex string */
for (i = 0; i < 76; i++)
le32enc(((char*)work->data) + i, *((uint32_t*) (((char*)work->data) + i)));
str = bin2hex((unsigned char *) work->data, 76);
if (unlikely(!str)) {
applog(LOG_ERR, "submit_upstream_work OOM");
goto out;
}
snprintf(s, JSON_BUF_LEN,
"{\"method\": \"getwork\", \"params\": [ \"%s\" ], \"id\":1}\r\n",
str);
/* issue JSON-RPC request */
val = json_rpc_call(curl, rpc_url, rpc_userpass, s, NULL, 0);
if (unlikely(!val)) {
applog(LOG_ERR, "submit_upstream_work json_rpc_call failed");
goto out;
}
res = json_object_get(val, "result");
reason = json_object_get(val, "reject-reason");
share_result(json_is_true(res), work,
reason ? json_string_value(reason) : NULL );
}
json_decref(val);
}
rc = true;
out: free(str);
return rc;
}
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 );
if(jsonrpc_2) {
char s[128];
snprintf(s, 128, "{\"method\": \"getjob\", \"params\": {\"id\": \"%s\"}, \"id\":1}\r\n", rpc2_id);
val = json_rpc2_call(curl, rpc_url, rpc_userpass, s, NULL, 0);
} else {
val = json_rpc_call(curl, rpc_url, rpc_userpass, rpc_req, NULL, 0);
}
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_debug && rc) {
timeval_subtract(&diff, &tv_end, &tv_start);
applog(LOG_DEBUG, "DEBUG: got new work in %d ms",
diff.tv_sec * 1000 + diff.tv_usec / 1000);
}
json_decref(val);
return rc;
}
static bool rpc2_login(CURL *curl) {
if(!jsonrpc_2) {
return false;
}
json_t *val;
bool rc;
struct timeval tv_start, tv_end, diff;
char s[JSON_BUF_LEN];
snprintf(s, JSON_BUF_LEN, "{\"method\": \"login\", \"params\": {\"login\": \"%s\", \"pass\": \"%s\", \"agent\": \"cpuminer-multi/0.1\"}, \"id\": 1}", rpc_user, rpc_pass);
gettimeofday(&tv_start, NULL );
val = json_rpc_call(curl, rpc_url, rpc_userpass, s, NULL, 0);
gettimeofday(&tv_end, NULL );
if (!val)
goto end;
// applog(LOG_DEBUG, "JSON value: %s", json_dumps(val, 0));
rc = rpc2_login_decode(val);
json_t *result = json_object_get(val, "result");
if(!result) goto end;
json_t *job = json_object_get(result, "job");
if(!rpc2_job_decode(job, &g_work)) {
goto end;
}
if (opt_debug && rc) {
timeval_subtract(&diff, &tv_end, &tv_start);
applog(LOG_DEBUG, "DEBUG: authenticated in %d ms",
diff.tv_sec * 1000 + diff.tv_usec / 1000);
}
json_decref(val);
end:
return rc;
}
static void workio_cmd_free(struct workio_cmd *wc) {
if (!wc)
return;
switch (wc->cmd) {
case WC_SUBMIT_WORK:
work_free(wc->u.work);
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 = calloc(1, 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");
free(ret_work);
return false;
}
/* pause, then restart work-request loop */
applog(LOG_ERR, "getwork 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))
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 */
applog(LOG_ERR, "...retry after %d seconds", opt_fail_pause);
sleep(opt_fail_pause);
}
return true;
}
static bool workio_login(CURL *curl) {
int failures = 0;
/* submit solution to bitcoin via JSON-RPC */
pthread_mutex_lock(&rpc2_login_lock);
while (!rpc2_login(curl)) {
if (unlikely((opt_retries >= 0) && (++failures > opt_retries))) {
applog(LOG_ERR, "...terminating workio thread");
pthread_mutex_unlock(&rpc2_login_lock);
return false;
}
/* pause, then restart work-request loop */
applog(LOG_ERR, "...retry after %d seconds", opt_fail_pause);
sleep(opt_fail_pause);
pthread_mutex_unlock(&rpc2_login_lock);
pthread_mutex_lock(&rpc2_login_lock);
}
pthread_mutex_unlock(&rpc2_login_lock);
return true;
}
static void *workio_thread(void *userdata) {
struct thr_info *mythr = userdata;
CURL *curl;
bool ok = true;
curl = curl_easy_init();
if (unlikely(!curl)) {
applog(LOG_ERR, "CURL initialization failed");
return NULL ;
}
if(!have_stratum) {
ok = workio_login(curl);
}
while (ok) {
struct workio_cmd *wc;
/* wait for workio_cmd sent to us, on our queue */
wc = tq_pop(mythr->q, NULL );
if (!wc) {
ok = false;
break;
}
/* process workio_cmd */
switch (wc->cmd) {
case WC_GET_WORK:
ok = workio_get_work(wc, curl);
break;
case WC_SUBMIT_WORK:
ok = workio_submit_work(wc, curl);
break;
default: /* should never happen */
ok = false;
break;
}
workio_cmd_free(wc);
}
tq_freeze(mythr->q);
curl_easy_cleanup(curl);
return NULL ;
}
static bool get_work(struct thr_info *thr, struct work *work) {
struct workio_cmd *wc;
struct work *work_heap;
if (opt_benchmark) {
memset(work->data, 0x55, 76);
work->data[17] = swab32(time(NULL ));
memset(work->data + 19, 0x00, 52);
work->data[20] = 0x80000000;
work->data[31] = 0x00000280;
memset(work->target, 0x00, sizeof(work->target));
return true;
}
/* fill out work request message */
wc = calloc(1, sizeof(*wc));
if (!wc)
return false;
wc->cmd = WC_GET_WORK;
wc->thr = thr;
/* send work request to workio thread */
if (!tq_push(thr_info[work_thr_id].q, wc)) {
workio_cmd_free(wc);
return false;
}
/* wait for response, a unit of work */
work_heap = tq_pop(thr->q, NULL );
if (!work_heap)
return false;
/* copy returned work into storage provided by caller */
memcpy(work, work_heap, sizeof(*work));
free(work_heap);
return true;
}
static bool submit_work(struct thr_info *thr, const struct work *work_in) {
struct workio_cmd *wc;
/* fill out work request message */
wc = calloc(1, sizeof(*wc));
if (!wc)
return false;
wc->u.work = malloc(sizeof(*work_in));
if (!wc->u.work)
goto err_out;
wc->cmd = WC_SUBMIT_WORK;
wc->thr = thr;
work_copy(wc->u.work, work_in);
/* send solution to workio thread */
if (!tq_push(thr_info[work_thr_id].q, wc))
goto err_out;
return true;
err_out: workio_cmd_free(wc);
return false;
}
static void stratum_gen_work(struct stratum_ctx *sctx, struct work *work) {
unsigned char merkle_root[64];
int i;
pthread_mutex_lock(&sctx->work_lock);
if (jsonrpc_2) {
free(work->job_id);
memcpy(work, &sctx->work, sizeof(struct work));
work->job_id = strdup(sctx->work.job_id);
pthread_mutex_unlock(&sctx->work_lock);
} else {
free(work->job_id);
work->job_id = strdup(sctx->job.job_id);
work->xnonce2_len = sctx->xnonce2_size;
work->xnonce2 = realloc(work->xnonce2, sctx->xnonce2_size);
memcpy(work->xnonce2, sctx->job.xnonce2, sctx->xnonce2_size);
/* Generate merkle root */
sha256d(merkle_root, sctx->job.coinbase, sctx->job.coinbase_size);
for (i = 0; i < sctx->job.merkle_count; i++) {
memcpy(merkle_root + 32, sctx->job.merkle[i], 32);
sha256d(merkle_root, merkle_root, 64);
}
/* Increment extranonce2 */
for (i = 0; i < sctx->xnonce2_size && !++sctx->job.xnonce2[i]; i++)
;
/* Assemble block header */
memset(work->data, 0, 128);
work->data[0] = le32dec(sctx->job.version);
for (i = 0; i < 8; i++)
work->data[1 + i] = le32dec((uint32_t *) sctx->job.prevhash + i);
for (i = 0; i < 8; i++)
work->data[9 + i] = be32dec((uint32_t *) merkle_root + i);
work->data[17] = le32dec(sctx->job.ntime);
work->data[18] = le32dec(sctx->job.nbits);
work->data[20] = 0x80000000;
work->data[31] = 0x00000280;