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stratum: handle a small cache of submitted jobs
Prevent to send duplicated shares on some pools like hashharder..
This cache keeps submitted job/nounces of the last 15 minutes
so, remove exit on repeated duplicate shares,
the submitted cache now handles this problem.
Signed-off-by: Tanguy Pruvot <tanguy.pruvot@gmail.com>- Loading branch information
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,84 @@ | ||
| #include <inttypes.h> | ||
| #include <stdlib.h> | ||
| #include <map> | ||
|
|
||
| #include "miner.h" | ||
|
|
||
| static std::map<uint64_t, uint32_t> tlastshares; | ||
|
|
||
| /** | ||
| * Purge entries after 15 minutes | ||
| */ | ||
| #define LOG_PURGE_TIMEOUT 15*60 | ||
|
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||
| /** | ||
| * Store submitted nounces of a job | ||
| */ | ||
| extern "C" void hashlog_remember_submit(char* jobid, uint32_t nounce) | ||
| { | ||
| char *ptr; | ||
| uint64_t njobid = (uint64_t) strtoul(jobid, &ptr, 16); | ||
| uint64_t key = (njobid << 32) + nounce; | ||
| tlastshares[key] = (uint32_t) time(NULL); | ||
| } | ||
|
|
||
| /** | ||
| * @return time of submission | ||
| */ | ||
| extern "C" uint32_t hashlog_already_submittted(char* jobid, uint32_t nounce) | ||
| { | ||
| char *ptr; | ||
| uint32_t ret = 0; | ||
| uint64_t njobid = (uint64_t) strtoul(jobid, &ptr, 16); | ||
| uint64_t key = (njobid << 32) + nounce; | ||
| std::map<uint64_t, uint32_t>::iterator i = tlastshares.find(key); | ||
| if (i != tlastshares.end()) | ||
| ret = (uint32_t) tlastshares[key]; | ||
| return ret; | ||
| } | ||
|
|
||
| /** | ||
| * Remove entries of a job... not used yet | ||
| */ | ||
| extern "C" void hashlog_purge_job(char* jobid) | ||
| { | ||
| char *ptr; | ||
| uint64_t njobid = strtoul(jobid, &ptr, 16); | ||
| uint64_t keypfx = (njobid << 32); | ||
| std::map<uint64_t, uint32_t>::iterator i = tlastshares.begin(); | ||
| while (i != tlastshares.end()) { | ||
| if ((keypfx & i->first) != 0) | ||
| tlastshares.erase(i); | ||
| i++; | ||
| } | ||
| } | ||
|
|
||
| /** | ||
| * Remove old entries to reduce memory usage | ||
| */ | ||
| extern "C" void hashlog_purge_old(void) | ||
| { | ||
| int deleted = 0; | ||
| uint32_t now = (uint32_t) time(NULL); | ||
| std::map<uint64_t, uint32_t>::iterator i = tlastshares.begin(); | ||
| while (i != tlastshares.end()) { | ||
| if ((now - i->second) > LOG_PURGE_TIMEOUT) { | ||
| deleted++; | ||
| tlastshares.erase(i); | ||
| } | ||
| i++; | ||
| } | ||
| if (opt_debug && deleted) { | ||
| applog(LOG_DEBUG, "hashlog: %d/%d purged", | ||
| deleted, tlastshares.size()); | ||
| } | ||
| } | ||
|
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| /** | ||
| * Reset the submitted nounce cache | ||
| */ | ||
| extern "C" void hashlog_purge_all(void) | ||
| { | ||
| tlastshares.clear(); | ||
| } | ||
|
|
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