GOSTCoin CUDA miner project, compatible with most nvidia cards, containing only gostd algo
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/**
* Hash log of submitted job nonces
* Prevent duplicate shares and could be used for RPC stats later
*
* Note: this source is C++ (requires std::map)
*
* tpruvot@github 2014
*/
#include <stdlib.h>
#include <memory.h>
#include <map>
#include "miner.h"
#define HI_DWORD(u64) ((uint32_t) (u64 >> 32))
#define LO_DWORD(u64) ((uint32_t) u64)
#define MK_HI64(u32) (0x100000000ULL * u32)
struct hashlog_data {
uint32_t tm_sent;
uint32_t scanned_from;
uint32_t scanned_to;
uint32_t last_from;
uint32_t tm_add;
uint32_t tm_upd;
};
static std::map<uint64_t, hashlog_data> tlastshares;
#define LOG_PURGE_TIMEOUT 5*60
/**
* str hex to uint32
*/
static uint64_t hextouint(char* jobid)
{
char *ptr;
/* dont use strtoull(), only since VS2013 */
return (uint64_t) strtoul(jobid, &ptr, 16);
}
/**
* @return time of a job/nonce submission (or last nonce if nonce is 0)
*/
extern "C" uint32_t hashlog_already_submittted(char* jobid, uint32_t nonce)
{
uint32_t ret = 0;
uint64_t njobid = hextouint(jobid);
uint64_t key = (njobid << 32) + nonce;
if (nonce == 0) {
// search last submitted nonce for job
ret = hashlog_get_last_sent(jobid);
} else if (tlastshares.find(key) != tlastshares.end()) {
hashlog_data data = tlastshares[key];
ret = data.tm_sent;
}
return ret;
}
/**
* Store submitted nonces of a job
*/
extern "C" void hashlog_remember_submit(char* jobid, uint32_t nonce, uint32_t scanned_from)
{
uint64_t njobid = hextouint(jobid);
uint64_t keyall = (njobid << 32);
uint64_t key = keyall + nonce;
hashlog_data data;
memset(&data, 0, sizeof(data));
data.scanned_from = scanned_from;
data.scanned_to = nonce;
data.tm_add = data.tm_upd = data.tm_sent = (uint32_t) time(NULL);
tlastshares[key] = data;
}
/**
* Update job scanned range
*/
extern "C" void hashlog_remember_scan_range(char* jobid, uint32_t scanned_from, uint32_t scanned_to)
{
uint64_t njobid = hextouint(jobid);
uint64_t keyall = (njobid << 32);
uint64_t range = hashlog_get_scan_range(jobid);
hashlog_data data;
// global scan range of a job
data = tlastshares[keyall];
if (range == 0) {
memset(&data, 0, sizeof(data));
} else {
// get min and max from all sent records
data.scanned_from = LO_DWORD(range);
data.scanned_to = HI_DWORD(range);
}
if (data.tm_add == 0)
data.tm_add = (uint32_t) time(NULL);
data.last_from = scanned_from;
if (scanned_from < scanned_to) {
if (data.scanned_to == 0 || scanned_from == data.scanned_to + 1)
data.scanned_to = scanned_to;
if (data.scanned_from == 0)
data.scanned_from = scanned_from ? scanned_from : 1; // min 1
else if (scanned_from < data.scanned_from || scanned_to == (data.scanned_from - 1))
data.scanned_from = scanned_from;
}
data.tm_upd = (uint32_t) time(NULL);
tlastshares[keyall] = data;
/* applog(LOG_BLUE, "job %s range : %x %x -> %x %x", jobid,
scanned_from, scanned_to, data.scanned_from, data.scanned_to); */
}
/**
* Returns the range of a job
* @return uint64_t to|from
*/
extern "C" uint64_t hashlog_get_scan_range(char* jobid)
{
uint64_t ret = 0;
uint64_t njobid = hextouint(jobid);
uint64_t keypfx = (njobid << 32);
hashlog_data data;
data.scanned_from = 0;
data.scanned_to = 0;
std::map<uint64_t, hashlog_data>::iterator i = tlastshares.begin();
while (i != tlastshares.end()) {
if ((keypfx & i->first) == keypfx && i->second.scanned_to > ret) {
if (i->second.scanned_to > data.scanned_to)
data.scanned_to = i->second.scanned_to;
if (i->second.scanned_from < data.scanned_from || data.scanned_from == 0)
data.scanned_from = i->second.scanned_from;
}
i++;
}
ret = data.scanned_from;
ret += MK_HI64(data.scanned_to);
return ret;
}
/**
* Search last submitted nonce for a job
* @return max nonce
*/
extern "C" uint32_t hashlog_get_last_sent(char* jobid)
{
uint32_t nonce = 0;
uint64_t njobid = hextouint(jobid);
uint64_t keypfx = (njobid << 32);
std::map<uint64_t, hashlog_data>::iterator i = tlastshares.begin();
while (i != tlastshares.end()) {
if ((keypfx & i->first) == keypfx && i->second.tm_sent > 0) {
nonce = LO_DWORD(i->first);
}
i++;
}
return nonce;
}
/**
* Remove entries of a job...
*/
extern "C" void hashlog_purge_job(char* jobid)
{
int deleted = 0;
uint64_t njobid = hextouint(jobid);
uint64_t keypfx = (njobid << 32);
uint32_t sz = tlastshares.size();
std::map<uint64_t, hashlog_data>::iterator i = tlastshares.begin();
while (i != tlastshares.end()) {
if ((keypfx & i->first) == keypfx) {
deleted++;
tlastshares.erase(i++);
}
else ++i;
}
if (opt_debug && deleted) {
applog(LOG_DEBUG, "hashlog: purge job %s, del %d/%d", jobid, deleted, sz);
}
}
/**
* Remove old entries to reduce memory usage
*/
extern "C" void hashlog_purge_old(void)
{
int deleted = 0;
uint32_t now = (uint32_t) time(NULL);
uint32_t sz = tlastshares.size();
std::map<uint64_t, hashlog_data>::iterator i = tlastshares.begin();
while (i != tlastshares.end()) {
if ((now - i->second.tm_sent) > LOG_PURGE_TIMEOUT) {
deleted++;
tlastshares.erase(i++);
}
else ++i;
}
if (opt_debug && deleted) {
applog(LOG_DEBUG, "hashlog: %d/%d purged", deleted, sz);
}
}
/**
* Reset the submitted nonces cache
*/
extern "C" void hashlog_purge_all(void)
{
tlastshares.clear();
}
/**
* Used to debug ranges...
*/
extern "C" void hashlog_dump_job(char* jobid)
{
if (opt_debug) {
int deleted = 0;
uint64_t njobid = hextouint(jobid);
uint64_t keypfx = (njobid << 32);
uint32_t sz = tlastshares.size();
std::map<uint64_t, hashlog_data>::iterator i = tlastshares.begin();
while (i != tlastshares.end()) {
if ((keypfx & i->first) == keypfx) {
if (i->first != keypfx)
applog(LOG_DEBUG, CL_YLW "job %s, found %08x ", jobid, LO_DWORD(i->first));
else
applog(LOG_DEBUG, CL_YLW "job %s scanned range : %08x-%08x", jobid,
i->second.scanned_from, i->second.scanned_to);
}
i++;
}
}
}