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util.c
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/*
* Copyright 2011-2013 Con Kolivas
* 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"
#include <stdio.h>
#include <stdlib.h>
#include <ctype.h>
#include <stdarg.h>
#include <string.h>
#include <jansson.h>
#ifdef HAVE_LIBCURL
#include <curl/curl.h>
#endif
#include <time.h>
#include <errno.h>
#include <unistd.h>
#include <sys/types.h>
#ifndef WIN32
#include <fcntl.h>
# ifdef __linux
# include <sys/prctl.h>
# endif
# include <sys/socket.h>
# include <netinet/in.h>
# include <netinet/tcp.h>
# include <netdb.h>
#else
# include <windows.h>
# include <winsock2.h>
# include <ws2tcpip.h>
# include <mmsystem.h>
#endif
#include "miner.h"
#include "elist.h"
#include "compat.h"
#include "util.h"
#define DEFAULT_SOCKWAIT 60
bool successful_connect = false;
static void keep_sockalive(SOCKETTYPE fd)
{
const int tcp_one = 1;
#ifndef WIN32
const int tcp_keepidle = 45;
const int tcp_keepintvl = 30;
int flags = fcntl(fd, F_GETFL, 0);
fcntl(fd, F_SETFL, O_NONBLOCK | flags);
#else
u_long flags = 1;
ioctlsocket(fd, FIONBIO, &flags);
#endif
setsockopt(fd, SOL_SOCKET, SO_KEEPALIVE, (const void *)&tcp_one, sizeof(tcp_one));
if (!opt_delaynet)
#ifndef __linux
setsockopt(fd, IPPROTO_TCP, TCP_NODELAY, (const void *)&tcp_one, sizeof(tcp_one));
#else /* __linux */
setsockopt(fd, SOL_TCP, TCP_NODELAY, (const void *)&tcp_one, sizeof(tcp_one));
setsockopt(fd, SOL_TCP, TCP_KEEPCNT, &tcp_one, sizeof(tcp_one));
setsockopt(fd, SOL_TCP, TCP_KEEPIDLE, &tcp_keepidle, sizeof(tcp_keepidle));
setsockopt(fd, SOL_TCP, TCP_KEEPINTVL, &tcp_keepintvl, sizeof(tcp_keepintvl));
#endif /* __linux */
#ifdef __APPLE_CC__
setsockopt(fd, IPPROTO_TCP, TCP_KEEPALIVE, &tcp_keepintvl, sizeof(tcp_keepintvl));
#endif /* __APPLE_CC__ */
}
struct tq_ent {
void *data;
struct list_head q_node;
};
#ifdef HAVE_LIBCURL
struct timeval nettime;
struct data_buffer {
void *buf;
size_t len;
};
struct upload_buffer {
const void *buf;
size_t len;
};
struct header_info {
char *lp_path;
int rolltime;
char *reason;
char *stratum_url;
bool hadrolltime;
bool canroll;
bool hadexpire;
};
static void databuf_free(struct data_buffer *db)
{
if (!db)
return;
free(db->buf);
memset(db, 0, sizeof(*db));
}
static size_t all_data_cb(const void *ptr, size_t size, size_t nmemb,
void *user_data)
{
struct data_buffer *db = user_data;
size_t len = size * nmemb;
size_t oldlen, newlen;
void *newmem;
static const unsigned char zero = 0;
oldlen = db->len;
newlen = oldlen + len;
newmem = realloc(db->buf, newlen + 1);
if (!newmem)
return 0;
db->buf = newmem;
db->len = newlen;
memcpy(db->buf + oldlen, ptr, len);
memcpy(db->buf + newlen, &zero, 1); /* null terminate */
return len;
}
static size_t upload_data_cb(void *ptr, size_t size, size_t nmemb,
void *user_data)
{
struct upload_buffer *ub = user_data;
unsigned int len = size * nmemb;
if (len > ub->len)
len = ub->len;
if (len) {
memcpy(ptr, ub->buf, len);
ub->buf += len;
ub->len -= len;
}
return len;
}
static size_t resp_hdr_cb(void *ptr, size_t size, size_t nmemb, void *user_data)
{
struct header_info *hi = user_data;
size_t remlen, slen, ptrlen = size * nmemb;
char *rem, *val = NULL, *key = NULL;
void *tmp;
val = calloc(1, ptrlen);
key = calloc(1, ptrlen);
if (!key || !val)
goto out;
tmp = memchr(ptr, ':', ptrlen);
if (!tmp || (tmp == ptr)) /* skip empty keys / blanks */
goto out;
slen = tmp - ptr;
if ((slen + 1) == ptrlen) /* skip key w/ no value */
goto out;
memcpy(key, ptr, slen); /* store & nul term key */
key[slen] = 0;
rem = ptr + slen + 1; /* trim value's leading whitespace */
remlen = ptrlen - slen - 1;
while ((remlen > 0) && (isspace(*rem))) {
remlen--;
rem++;
}
memcpy(val, rem, remlen); /* store value, trim trailing ws */
val[remlen] = 0;
while ((*val) && (isspace(val[strlen(val) - 1])))
val[strlen(val) - 1] = 0;
if (!*val) /* skip blank value */
goto out;
if (opt_protocol)
applog(LOG_DEBUG, "HTTP hdr(%s): %s", key, val);
if (!strcasecmp("X-Roll-Ntime", key)) {
hi->hadrolltime = true;
if (!strncasecmp("N", val, 1))
applog(LOG_DEBUG, "X-Roll-Ntime: N found");
else {
hi->canroll = true;
/* Check to see if expire= is supported and if not, set
* the rolltime to the default scantime */
if (strlen(val) > 7 && !strncasecmp("expire=", val, 7)) {
sscanf(val + 7, "%d", &hi->rolltime);
hi->hadexpire = true;
} else
hi->rolltime = opt_scantime;
applog(LOG_DEBUG, "X-Roll-Ntime expiry set to %d", hi->rolltime);
}
}
if (!strcasecmp("X-Long-Polling", key)) {
hi->lp_path = val; /* steal memory reference */
val = NULL;
}
if (!strcasecmp("X-Reject-Reason", key)) {
hi->reason = val; /* steal memory reference */
val = NULL;
}
if (!strcasecmp("X-Stratum", key)) {
hi->stratum_url = val;
val = NULL;
}
out:
free(key);
free(val);
return ptrlen;
}
static void last_nettime(struct timeval *last)
{
rd_lock(&netacc_lock);
last->tv_sec = nettime.tv_sec;
last->tv_usec = nettime.tv_usec;
rd_unlock(&netacc_lock);
}
static void set_nettime(void)
{
wr_lock(&netacc_lock);
cgtime(&nettime);
wr_unlock(&netacc_lock);
}
#if CURL_HAS_KEEPALIVE
static void keep_curlalive(CURL *curl)
{
const int tcp_keepidle = 45;
const int tcp_keepintvl = 30;
const long int keepalive = 1;
curl_easy_setopt(curl, CURLOPT_TCP_KEEPALIVE, keepalive);
curl_easy_setopt(curl, CURLOPT_TCP_KEEPIDLE, tcp_keepidle);
curl_easy_setopt(curl, CURLOPT_TCP_KEEPINTVL, tcp_keepintvl);
}
#else
static void keep_curlalive(CURL *curl)
{
SOCKETTYPE sock;
curl_easy_getinfo(curl, CURLINFO_LASTSOCKET, (long *)&sock);
keep_sockalive(sock);
}
#endif
static int curl_debug_cb(__maybe_unused CURL *handle, curl_infotype type,
__maybe_unused char *data, size_t size, void *userdata)
{
struct pool *pool = (struct pool *)userdata;
switch(type) {
case CURLINFO_HEADER_IN:
case CURLINFO_DATA_IN:
case CURLINFO_SSL_DATA_IN:
pool->cgminer_pool_stats.net_bytes_received += size;
break;
case CURLINFO_HEADER_OUT:
case CURLINFO_DATA_OUT:
case CURLINFO_SSL_DATA_OUT:
pool->cgminer_pool_stats.net_bytes_sent += size;
break;
case CURLINFO_TEXT:
default:
break;
}
return 0;
}
json_t *json_rpc_call(CURL *curl, const char *url,
const char *userpass, const char *rpc_req,
bool probe, bool longpoll, int *rolltime,
struct pool *pool, bool share)
{
long timeout = longpoll ? (60 * 60) : 60;
struct data_buffer all_data = {NULL, 0};
struct header_info hi = {NULL, 0, NULL, NULL, false, false, false};
char len_hdr[64], user_agent_hdr[128];
char curl_err_str[CURL_ERROR_SIZE];
struct curl_slist *headers = NULL;
struct upload_buffer upload_data;
json_t *val, *err_val, *res_val;
bool probing = false;
double byte_count;
json_error_t err;
int rc;
memset(&err, 0, sizeof(err));
/* it is assumed that 'curl' is freshly [re]initialized at this pt */
if (probe)
probing = !pool->probed;
curl_easy_setopt(curl, CURLOPT_TIMEOUT, timeout);
// CURLOPT_VERBOSE won't write to stderr if we use CURLOPT_DEBUGFUNCTION
curl_easy_setopt(curl, CURLOPT_DEBUGFUNCTION, curl_debug_cb);
curl_easy_setopt(curl, CURLOPT_DEBUGDATA, (void *)pool);
curl_easy_setopt(curl, CURLOPT_VERBOSE, 1);
curl_easy_setopt(curl, CURLOPT_NOSIGNAL, 1);
curl_easy_setopt(curl, CURLOPT_URL, url);
curl_easy_setopt(curl, CURLOPT_ENCODING, "");
curl_easy_setopt(curl, CURLOPT_FAILONERROR, 1);
/* Shares are staggered already and delays in submission can be costly
* so do not delay them */
if (!opt_delaynet || share)
curl_easy_setopt(curl, CURLOPT_TCP_NODELAY, 1);
curl_easy_setopt(curl, CURLOPT_WRITEFUNCTION, all_data_cb);
curl_easy_setopt(curl, CURLOPT_WRITEDATA, &all_data);
curl_easy_setopt(curl, CURLOPT_READFUNCTION, upload_data_cb);
curl_easy_setopt(curl, CURLOPT_READDATA, &upload_data);
curl_easy_setopt(curl, CURLOPT_ERRORBUFFER, curl_err_str);
curl_easy_setopt(curl, CURLOPT_FOLLOWLOCATION, 1);
curl_easy_setopt(curl, CURLOPT_HEADERFUNCTION, resp_hdr_cb);
curl_easy_setopt(curl, CURLOPT_HEADERDATA, &hi);
curl_easy_setopt(curl, CURLOPT_USE_SSL, CURLUSESSL_TRY);
if (pool->rpc_proxy) {
curl_easy_setopt(curl, CURLOPT_PROXY, pool->rpc_proxy);
curl_easy_setopt(curl, CURLOPT_PROXYTYPE, pool->rpc_proxytype);
} else if (opt_socks_proxy) {
curl_easy_setopt(curl, CURLOPT_PROXY, opt_socks_proxy);
curl_easy_setopt(curl, CURLOPT_PROXYTYPE, CURLPROXY_SOCKS4);
}
if (userpass) {
curl_easy_setopt(curl, CURLOPT_USERPWD, userpass);
curl_easy_setopt(curl, CURLOPT_HTTPAUTH, CURLAUTH_BASIC);
}
if (longpoll)
keep_curlalive(curl);
curl_easy_setopt(curl, CURLOPT_POST, 1);
if (opt_protocol)
applog(LOG_DEBUG, "JSON protocol request:\n%s", rpc_req);
upload_data.buf = rpc_req;
upload_data.len = strlen(rpc_req);
sprintf(len_hdr, "Content-Length: %lu",
(unsigned long) upload_data.len);
sprintf(user_agent_hdr, "User-Agent: %s", PACKAGE_STRING);
headers = curl_slist_append(headers,
"Content-type: application/json");
headers = curl_slist_append(headers,
"X-Mining-Extensions: longpoll midstate rollntime submitold");
if (likely(global_hashrate)) {
char ghashrate[255];
sprintf(ghashrate, "X-Mining-Hashrate: %llu", global_hashrate);
headers = curl_slist_append(headers, ghashrate);
}
headers = curl_slist_append(headers, len_hdr);
headers = curl_slist_append(headers, user_agent_hdr);
headers = curl_slist_append(headers, "Expect:"); /* disable Expect hdr*/
curl_easy_setopt(curl, CURLOPT_HTTPHEADER, headers);
if (opt_delaynet) {
/* Don't delay share submission, but still track the nettime */
if (!share) {
long long now_msecs, last_msecs;
struct timeval now, last;
cgtime(&now);
last_nettime(&last);
now_msecs = (long long)now.tv_sec * 1000;
now_msecs += now.tv_usec / 1000;
last_msecs = (long long)last.tv_sec * 1000;
last_msecs += last.tv_usec / 1000;
if (now_msecs > last_msecs && now_msecs - last_msecs < 250) {
struct timespec rgtp;
rgtp.tv_sec = 0;
rgtp.tv_nsec = (250 - (now_msecs - last_msecs)) * 1000000;
nanosleep(&rgtp, NULL);
}
}
set_nettime();
}
rc = curl_easy_perform(curl);
if (rc) {
applog(LOG_INFO, "HTTP request failed: %s", curl_err_str);
goto err_out;
}
if (!all_data.buf) {
applog(LOG_DEBUG, "Empty data received in json_rpc_call.");
goto err_out;
}
pool->cgminer_pool_stats.times_sent++;
if (curl_easy_getinfo(curl, CURLINFO_SIZE_UPLOAD, &byte_count) == CURLE_OK)
pool->cgminer_pool_stats.bytes_sent += byte_count;
pool->cgminer_pool_stats.times_received++;
if (curl_easy_getinfo(curl, CURLINFO_SIZE_DOWNLOAD, &byte_count) == CURLE_OK)
pool->cgminer_pool_stats.bytes_received += byte_count;
if (probing) {
pool->probed = true;
/* If X-Long-Polling was found, activate long polling */
if (hi.lp_path) {
if (pool->hdr_path != NULL)
free(pool->hdr_path);
pool->hdr_path = hi.lp_path;
} else
pool->hdr_path = NULL;
if (hi.stratum_url) {
pool->stratum_url = hi.stratum_url;
hi.stratum_url = NULL;
}
} else {
if (hi.lp_path) {
free(hi.lp_path);
hi.lp_path = NULL;
}
if (hi.stratum_url) {
free(hi.stratum_url);
hi.stratum_url = NULL;
}
}
*rolltime = hi.rolltime;
pool->cgminer_pool_stats.rolltime = hi.rolltime;
pool->cgminer_pool_stats.hadrolltime = hi.hadrolltime;
pool->cgminer_pool_stats.canroll = hi.canroll;
pool->cgminer_pool_stats.hadexpire = hi.hadexpire;
val = JSON_LOADS(all_data.buf, &err);
if (!val) {
applog(LOG_INFO, "JSON decode failed(%d): %s", err.line, err.text);
if (opt_protocol)
applog(LOG_DEBUG, "JSON protocol response:\n%s", (char *)(all_data.buf));
goto err_out;
}
if (opt_protocol) {
char *s = json_dumps(val, JSON_INDENT(3));
applog(LOG_DEBUG, "JSON protocol response:\n%s", s);
free(s);
}
/* JSON-RPC valid response returns a non-null 'result',
* and a null 'error'.
*/
res_val = json_object_get(val, "result");
err_val = json_object_get(val, "error");
if (!res_val ||(err_val && !json_is_null(err_val))) {
char *s;
if (err_val)
s = json_dumps(err_val, JSON_INDENT(3));
else
s = strdup("(unknown reason)");
applog(LOG_INFO, "JSON-RPC call failed: %s", s);
free(s);
goto err_out;
}
if (hi.reason) {
json_object_set_new(val, "reject-reason", json_string(hi.reason));
free(hi.reason);
hi.reason = NULL;
}
successful_connect = true;
databuf_free(&all_data);
curl_slist_free_all(headers);
curl_easy_reset(curl);
return val;
err_out:
databuf_free(&all_data);
curl_slist_free_all(headers);
curl_easy_reset(curl);
if (!successful_connect)
applog(LOG_DEBUG, "Failed to connect in json_rpc_call");
curl_easy_setopt(curl, CURLOPT_FRESH_CONNECT, 1);
return NULL;
}
#define PROXY_HTTP CURLPROXY_HTTP
#define PROXY_HTTP_1_0 CURLPROXY_HTTP_1_0
#define PROXY_SOCKS4 CURLPROXY_SOCKS4
#define PROXY_SOCKS5 CURLPROXY_SOCKS5
#define PROXY_SOCKS4A CURLPROXY_SOCKS4A
#define PROXY_SOCKS5H CURLPROXY_SOCKS5_HOSTNAME
#else /* HAVE_LIBCURL */
#define PROXY_HTTP 0
#define PROXY_HTTP_1_0 1
#define PROXY_SOCKS4 2
#define PROXY_SOCKS5 3
#define PROXY_SOCKS4A 4
#define PROXY_SOCKS5H 5
#endif /* HAVE_LIBCURL */
static struct {
const char *name;
proxytypes_t proxytype;
} proxynames[] = {
{ "http:", PROXY_HTTP },
{ "http0:", PROXY_HTTP_1_0 },
{ "socks4:", PROXY_SOCKS4 },
{ "socks5:", PROXY_SOCKS5 },
{ "socks4a:", PROXY_SOCKS4A },
{ "socks5h:", PROXY_SOCKS5H },
{ NULL, 0 }
};
const char *proxytype(proxytypes_t proxytype)
{
int i;
for (i = 0; proxynames[i].name; i++)
if (proxynames[i].proxytype == proxytype)
return proxynames[i].name;
return "invalid";
}
char *get_proxy(char *url, struct pool *pool)
{
pool->rpc_proxy = NULL;
char *split;
int plen, len, i;
for (i = 0; proxynames[i].name; i++) {
plen = strlen(proxynames[i].name);
if (strncmp(url, proxynames[i].name, plen) == 0) {
if (!(split = strchr(url, '|')))
return url;
*split = '\0';
len = split - url;
pool->rpc_proxy = malloc(1 + len - plen);
if (!(pool->rpc_proxy))
quithere(1, "Failed to malloc rpc_proxy");
strcpy(pool->rpc_proxy, url + plen);
extract_sockaddr(pool->rpc_proxy, &pool->sockaddr_proxy_url, &pool->sockaddr_proxy_port);
pool->rpc_proxytype = proxynames[i].proxytype;
url = split + 1;
break;
}
}
return url;
}
void bin_reverse(unsigned char *in, unsigned char *out, int length)
{
in += length - 1;
while(length-- > 0) {
*out = *in;
in--; out++;
}
}
/* Adequate size s==len*2 + 1 must be alloced to use this variant */
void __bin2hex(char *s, const unsigned char *p, size_t len)
{
int i;
for (i = 0; i < (int)len; i++)
sprintf(s + (i * 2), "%02x", (unsigned int)p[i]);
}
/* Returns a malloced array string of a binary value of arbitrary length. The
* array is rounded up to a 4 byte size to appease architectures that need
* aligned array sizes */
char *bin2hex(const unsigned char *p, size_t len)
{
ssize_t slen;
char *s;
slen = len * 2 + 1;
if (slen % 4)
slen += 4 - (slen % 4);
s = calloc(slen, 1);
if (unlikely(!s))
quithere(1, "Failed to calloc");
__bin2hex(s, p, len);
return s;
}
/* Does the reverse of bin2hex but does not allocate any ram */
bool hex2bin(unsigned char *p, const char *hexstr, size_t len)
{
bool ret = false;
while (*hexstr && len) {
char hex_byte[4];
unsigned int v;
if (unlikely(!hexstr[1])) {
applog(LOG_ERR, "hex2bin str truncated");
return ret;
}
memset(hex_byte, 0, 4);
hex_byte[0] = hexstr[0];
hex_byte[1] = hexstr[1];
if (unlikely(sscanf(hex_byte, "%x", &v) != 1)) {
applog(LOG_INFO, "hex2bin sscanf '%s' failed", hex_byte);
return ret;
}
*p = (unsigned char) v;
p++;
hexstr += 2;
len--;
}
if (likely(len == 0 && *hexstr == 0))
ret = true;
return ret;
}
bool fulltest(const unsigned char *hash, const unsigned char *target)
{
unsigned char hash_swap[32], target_swap[32];
uint32_t *hash32 = (uint32_t *) hash_swap;
uint32_t *target32 = (uint32_t *) target_swap;
char *hash_str, *target_str;
bool rc = true;
int i;
swap256(hash_swap, hash);
swap256(target_swap, target);
for (i = 0; i < 32/4; i++) {
uint32_t h32tmp = htobe32(hash32[i]);
uint32_t t32tmp = htole32(target32[i]);
target32[i] = swab32(target32[i]); /* for printing */
if (h32tmp > t32tmp) {
rc = false;
break;
}
if (h32tmp < t32tmp) {
rc = true;
break;
}
}
if (opt_debug) {
hash_str = bin2hex(hash_swap, 32);
target_str = bin2hex(target_swap, 32);
applog(LOG_DEBUG, " Proof: %s\nTarget: %s\nTrgVal? %s",
hash_str,
target_str,
rc ? "YES (hash <= target)" :
"no (false positive; hash > target)");
free(hash_str);
free(target_str);
}
return rc;
}
struct thread_q *tq_new(void)
{
struct thread_q *tq;
tq = calloc(1, sizeof(*tq));
if (!tq)
return NULL;
INIT_LIST_HEAD(&tq->q);
pthread_mutex_init(&tq->mutex, NULL);
pthread_cond_init(&tq->cond, NULL);
return tq;
}
void tq_free(struct thread_q *tq)
{
struct tq_ent *ent, *iter;
if (!tq)
return;
list_for_each_entry_safe(ent, iter, &tq->q, q_node) {
list_del(&ent->q_node);
free(ent);
}
pthread_cond_destroy(&tq->cond);
pthread_mutex_destroy(&tq->mutex);
memset(tq, 0, sizeof(*tq)); /* poison */
free(tq);
}
static void tq_freezethaw(struct thread_q *tq, bool frozen)
{
mutex_lock(&tq->mutex);
tq->frozen = frozen;
pthread_cond_signal(&tq->cond);
mutex_unlock(&tq->mutex);
}
void tq_freeze(struct thread_q *tq)
{
tq_freezethaw(tq, true);
}
void tq_thaw(struct thread_q *tq)
{
tq_freezethaw(tq, false);
}
bool tq_push(struct thread_q *tq, void *data)
{
struct tq_ent *ent;
bool rc = true;
ent = calloc(1, sizeof(*ent));
if (!ent)
return false;
ent->data = data;
INIT_LIST_HEAD(&ent->q_node);
mutex_lock(&tq->mutex);
if (!tq->frozen) {
list_add_tail(&ent->q_node, &tq->q);
} else {
free(ent);
rc = false;
}
pthread_cond_signal(&tq->cond);
mutex_unlock(&tq->mutex);
return rc;
}
void *tq_pop(struct thread_q *tq, const struct timespec *abstime)
{
struct tq_ent *ent;
void *rval = NULL;
int rc;
mutex_lock(&tq->mutex);
if (!list_empty(&tq->q))
goto pop;
if (abstime)
rc = pthread_cond_timedwait(&tq->cond, &tq->mutex, abstime);
else
rc = pthread_cond_wait(&tq->cond, &tq->mutex);
if (rc)
goto out;
if (list_empty(&tq->q))
goto out;
pop:
ent = list_entry(tq->q.next, struct tq_ent, q_node);
rval = ent->data;
list_del(&ent->q_node);
free(ent);
out:
mutex_unlock(&tq->mutex);
return rval;
}
int thr_info_create(struct thr_info *thr, pthread_attr_t *attr, void *(*start) (void *), void *arg)
{
cgsem_init(&thr->sem);
return pthread_create(&thr->pth, attr, start, arg);
}
void thr_info_cancel(struct thr_info *thr)
{
if (!thr)
return;
if (PTH(thr) != 0L) {
pthread_cancel(thr->pth);
PTH(thr) = 0L;
}
cgsem_destroy(&thr->sem);
}
void subtime(struct timeval *a, struct timeval *b)
{
timersub(a, b, b);
}
void addtime(struct timeval *a, struct timeval *b)
{
timeradd(a, b, b);
}
bool time_more(struct timeval *a, struct timeval *b)
{
return timercmp(a, b, >);
}
bool time_less(struct timeval *a, struct timeval *b)
{
return timercmp(a, b, <);
}
void copy_time(struct timeval *dest, const struct timeval *src)
{
memcpy(dest, src, sizeof(struct timeval));
}
void timespec_to_val(struct timeval *val, const struct timespec *spec)
{
val->tv_sec = spec->tv_sec;
val->tv_usec = spec->tv_nsec / 1000;
}
void timeval_to_spec(struct timespec *spec, const struct timeval *val)
{
spec->tv_sec = val->tv_sec;
spec->tv_nsec = val->tv_usec * 1000;
}
void us_to_timeval(struct timeval *val, int64_t us)
{
lldiv_t tvdiv = lldiv(us, 1000000);
val->tv_sec = tvdiv.quot;
val->tv_usec = tvdiv.rem;
}
void us_to_timespec(struct timespec *spec, int64_t us)
{
lldiv_t tvdiv = lldiv(us, 1000000);
spec->tv_sec = tvdiv.quot;
spec->tv_nsec = tvdiv.rem * 1000;
}
void ms_to_timespec(struct timespec *spec, int64_t ms)
{
lldiv_t tvdiv = lldiv(ms, 1000);
spec->tv_sec = tvdiv.quot;
spec->tv_nsec = tvdiv.rem * 1000000;
}
void ms_to_timeval(struct timeval *val, int64_t ms)
{
lldiv_t tvdiv = lldiv(ms, 1000);
val->tv_sec = tvdiv.quot;
val->tv_usec = tvdiv.rem * 1000;
}
void timeraddspec(struct timespec *a, const struct timespec *b)
{
a->tv_sec += b->tv_sec;
a->tv_nsec += b->tv_nsec;
if (a->tv_nsec >= 1000000000) {
a->tv_nsec -= 1000000000;
a->tv_sec++;
}
}
static int timespec_to_ms(struct timespec *ts)
{
return ts->tv_sec * 1000 + ts->tv_nsec / 1000000;
}
/* Subtracts b from a and stores it in res. */
void cgtimer_sub(cgtimer_t *a, cgtimer_t *b, cgtimer_t *res)
{
res->tv_sec = a->tv_sec - b->tv_sec;
res->tv_nsec = a->tv_nsec - b->tv_nsec;
if (res->tv_nsec < 0) {
res->tv_nsec += 1000000000;
res->tv_sec--;
}
}
/* Subtract b from a */
static void __maybe_unused timersubspec(struct timespec *a, const struct timespec *b)
{
a->tv_sec -= b->tv_sec;
a->tv_nsec -= b->tv_nsec;
if (a->tv_nsec < 0) {
a->tv_nsec += 1000000000;
a->tv_sec--;
}
}
static void __maybe_unused cgsleep_spec(struct timespec *ts_diff, const struct timespec *ts_start)
{
struct timespec now;
timeraddspec(ts_diff, ts_start);
cgtimer_time(&now);
timersubspec(ts_diff, &now);
if (unlikely(ts_diff->tv_sec < 0))
return;
nanosleep(ts_diff, NULL);
}
int cgtimer_to_ms(cgtimer_t *cgt)
{
return timespec_to_ms(cgt);
}
/* These are cgminer specific sleep functions that use an absolute nanosecond
* resolution timer to avoid poor usleep accuracy and overruns. */
#ifdef WIN32
/* Windows start time is since 1601 LOL so convert it to unix epoch 1970. */
#define EPOCHFILETIME (116444736000000000LL)
/* Return the system time as an lldiv_t in decimicroseconds. */
static void decius_time(lldiv_t *lidiv)
{
FILETIME ft;
LARGE_INTEGER li;
GetSystemTimeAsFileTime(&ft);
li.LowPart = ft.dwLowDateTime;
li.HighPart = ft.dwHighDateTime;
li.QuadPart -= EPOCHFILETIME;
/* SystemTime is in decimicroseconds so divide by an unusual number */
*lidiv = lldiv(li.QuadPart, 10000000);
}
/* This is a cgminer gettimeofday wrapper. Since we always call gettimeofday
* with tz set to NULL, and windows' default resolution is only 15ms, this
* gives us higher resolution times on windows. */
void cgtime(struct timeval *tv)
{
lldiv_t lidiv;
decius_time(&lidiv);
tv->tv_sec = lidiv.quot;
tv->tv_usec = lidiv.rem / 10;
}
void cgtimer_time(cgtimer_t *ts_start)
{
lldiv_t lidiv;;
decius_time(&lidiv);
ts_start->tv_sec = lidiv.quot;
ts_start->tv_nsec = lidiv.quot * 100;
}
#else /* WIN32 */
void cgtime(struct timeval *tv)
{
gettimeofday(tv, NULL);
}