void BitcoinMiner(primecoinBlock_t* primecoinBlock, sint32 threadIndex)
{
//printf("PrimecoinMiner started\n");
//SetThreadPriority(THREAD_PRIORITY_LOWEST);
//RenameThread("primecoin-miner");
if( pctx == NULL )
pctx = BN_CTX_new();
// Each thread has its own key and counter
//CReserveKey reservekey(pwallet);
unsigned int nExtraNonce = 0;
static const unsigned int nPrimorialHashFactor = 7;
unsigned int nPrimorialMultiplierStart = 7;
static int startFactorList[4] =
{
107,107,107,107
//131,131,131,131
};
// there is a much better way to do all the primorial and fixedMutliplier calculation, but this has to suffice for now...
nPrimorialMultiplierStart = startFactorList[(threadIndex&3)];
unsigned int nPrimorialMultiplier = nPrimorialMultiplierStart;
int64 nTimeExpected = 0; // time expected to prime chain (micro-second)
int64 nTimeExpectedPrev = 0; // time expected to prime chain last time
bool fIncrementPrimorial = true; // increase or decrease primorial factor
CSieveOfEratosthenes* psieve = NULL;
primecoinBlock->nonce = 0;
//uint32 nTime = GetTickCount() + 1000*60;
// note: originally a wanted to loop as long as (primecoinBlock->workDataHash != jhMiner_getCurrentWorkHash()) did not happen
// but I noticed it might be smarter to just check if the blockHeight has changed, since that is what is really important
nPrimorialMultiplier = nPrimorialMultiplierStart;
uint32 loopCount = 0;
mpz_class bnHashFactor;
Primorial(nPrimorialHashFactor, bnHashFactor);
time_t unixTimeStart;
time(&unixTimeStart);
uint32 nTimeRollStart = primecoinBlock->timestamp;
while( primecoinBlock->serverData.blockHeight == jhMiner_getCurrentWorkBlockHeight(primecoinBlock->threadIndex) )
{
if( primecoinBlock->xptMode )
{
// when using x.pushthrough, roll time
time_t unixTimeCurrent;
time(&unixTimeCurrent);
uint32 timeDif = unixTimeCurrent - unixTimeStart;
uint32 newTimestamp = nTimeRollStart + timeDif;
if( newTimestamp != primecoinBlock->timestamp )
{
primecoinBlock->timestamp = newTimestamp;
primecoinBlock->nonce = 0;
nPrimorialMultiplierStart = startFactorList[(threadIndex&3)];
}
}
primecoinBlock_generateHeaderHash(primecoinBlock, primecoinBlock->blockHeaderHash.begin());
//
// Search
//
bool fNewBlock = true;
unsigned int nTriedMultiplier = 0;
uint256 phash = primecoinBlock->blockHeaderHash;
mpz_class mpzHash;
mpz_set_uint256(mpzHash.get_mpz_t(), phash);
// Primecoin: try to find hash divisible by primorial
while ((phash < hashBlockHeaderLimit || (mpzHash % bnHashFactor != 0)) && primecoinBlock->nonce < 0xffff0000)
{
primecoinBlock->nonce++;
primecoinBlock_generateHeaderHash(primecoinBlock, primecoinBlock->blockHeaderHash.begin());
phash = primecoinBlock->blockHeaderHash;
mpz_set_uint256(mpzHash.get_mpz_t(), phash);
}
//printf("Use nonce %d\n", primecoinBlock->nonce);
if (primecoinBlock->nonce >= 0xffff0000)
{
printf("Nonce overflow\n");
break;
}
// Primecoin: primorial fixed multiplier
mpz_class bnPrimorial;
unsigned int nRoundTests = 0;
unsigned int nRoundPrimesHit = 0;
//int64 nPrimeTimerStart = GetTimeMicros();
//if (nTimeExpected > nTimeExpectedPrev)
// fIncrementPrimorial = !fIncrementPrimorial;
//nTimeExpectedPrev = nTimeExpected;
//// Primecoin: dynamic adjustment of primorial multiplier
//if (fIncrementPrimorial)
//{
// if (!PrimeTableGetNextPrime(&nPrimorialMultiplier))
// error("PrimecoinMiner() : primorial increment overflow");
//}
//else if (nPrimorialMultiplier > nPrimorialHashFactor)
//{
// if (!PrimeTableGetPreviousPrime(&nPrimorialMultiplier))
// error("PrimecoinMiner() : primorial decrement overflow");
//}
//if( loopCount > 0 )
//{
// primecoinBlock->nonce++;
///* if (!PrimeTableGetNextPrime(&nPrimorialMultiplier))
// error("PrimecoinMiner() : primorial increment overflow");*/
//}
Primorial(nPrimorialMultiplier, bnPrimorial);
unsigned int nTests = 0;
unsigned int nPrimesHit = 0;
mpz_class bnMultiplierMin = bnPrimeMin * bnHashFactor / mpzHash + 2;
while (bnPrimorial < bnMultiplierMin )
{
if (!PrimeTableGetNextPrime(&nPrimorialMultiplier))
error("PrimecoinMiner() : primorial minimum overflow");
Primorial(nPrimorialMultiplier, bnPrimorial);
}
mpz_class bnFixedMultiplier;
if(bnPrimorial > bnHashFactor){
bnFixedMultiplier = bnPrimorial / bnHashFactor;
}else{
bnFixedMultiplier = 1;
}
//printf("fixedMultiplier: %d nPrimorialMultiplier: %d\n", BN_get_word(&bnFixedMultiplier), nPrimorialMultiplier);
// Primecoin: mine for prime chain
unsigned int nProbableChainLength;
if (MineProbablePrimeChain(&psieve, primecoinBlock, bnFixedMultiplier, fNewBlock, nTriedMultiplier, nProbableChainLength, nTests, nPrimesHit))
{
// do nothing here, share is already submitted in MineProbablePrimeChain()
break;
}
//psieve = NULL;
nRoundTests += nTests;
nRoundPrimesHit += nPrimesHit;
// added this
/*if( nPrimorialMultiplier >= 800 )
{
primecoinBlock->nonce++;
nPrimorialMultiplier = nPrimorialMultiplierStart;
}*/
//if( nPrimorialMultiplier >= 800 )
//{
// primecoinBlock->nonce++;
// nPrimorialMultiplier = nPrimorialMultiplierStart;
//}
//if( primecoinBlock->nonce >= 0x100 )
//{
// printf("Base reset\n");
// primecoinBlock->nonce = 0;
// nPrimorialMultiplier = nPrimorialMultiplierStart;
//}
primecoinBlock->nonce++;
loopCount++;
}
}
bool BitcoinMiner(primecoinBlock_t* primecoinBlock, CSieveOfEratosthenes*& psieve, const sint32 threadIndex, const unsigned int nonceStep)
{
//JLR DBG
//printf("PrimecoinMiner started\n");
//SetThreadPriority(THREAD_PRIORITY_LOWEST);
//RenameThread("primecoin-miner");
if( pctx == NULL )
pctx = BN_CTX_new();
// Each thread has its own key and counter
//CReserveKey reservekey(pwallet);
// unsigned int nExtraNonce = 0; unused?
static const unsigned int MAX_NONCE = 0xFFFF0000; // From Primecoind sources.
static const unsigned int nPrimorialHashFactor = 7;
// const unsigned int nPrimorialMultiplierStart = 61; unused?
// const unsigned int nPrimorialMultiplierMax = 79; unused?
unsigned int nPrimorialMultiplier = primeStats.nPrimorialMultiplier;
// uint64_t nTimeExpected = 0; // time expected to prime chain (micro-second) unused?
// uint64_t nTimeExpectedPrev = 0; // time expected to prime chain last time unused?
// bool fIncrementPrimorial = true; // increase or decrease primorial factor unused?
// uint64_t nSieveGenTime = 0; unused?
// Generate a thread specific nonce.
primecoinBlock->nonce = threadIndex;
uint64 nTime = getTimeMilliseconds() + 1000*600;
// uint64 nStatTime = getTimeMilliseconds() + 2000; unused?
// note: originally a wanted to loop as long as (primecoinBlock->workDataHash != jhMiner_getCurrentWorkHash()) did not happen
// but I noticed it might be smarter to just check if the blockHeight has changed, since that is what is really important
uint32 loopCount = 0;
//mpz_class mpzHashFactor;
//Primorial(nPrimorialHashFactor, mpzHashFactor);
unsigned int nHashFactor = PrimorialFast(nPrimorialHashFactor);
time_t unixTimeStart;
time(&unixTimeStart);
uint32 nTimeRollStart = primecoinBlock->timestamp - 5;
uint32 nLastRollTime = getTimeMilliseconds();
uint32 nCurrentTick = nLastRollTime;
while( nCurrentTick < nTime && primecoinBlock->serverData.blockHeight == jhMiner_getCurrentWorkBlockHeight(primecoinBlock->threadIndex) )
{
nCurrentTick = getTimeMilliseconds();
// Roll Time stamp every 10 secs.
if ((primecoinBlock->xptMode) && (nCurrentTick < nLastRollTime || (nLastRollTime - nCurrentTick >= 10000)))
{
// when using x.pushthrough, roll time
time_t unixTimeCurrent;
time(&unixTimeCurrent);
uint32 timeDif = unixTimeCurrent - unixTimeStart;
uint32 newTimestamp = nTimeRollStart + timeDif;
if( newTimestamp != primecoinBlock->timestamp )
{
primecoinBlock->timestamp = newTimestamp;
primecoinBlock->nonce = threadIndex;
//nPrimorialMultiplierStart = startFactorList[(threadIndex&3)];
//nPrimorialMultiplier = nPrimorialMultiplierStart;
}
nLastRollTime = nCurrentTick;
}
primecoinBlock_generateHeaderHash(primecoinBlock, primecoinBlock->blockHeaderHash.begin());
//
// Search
//
bool fNewBlock = true;
unsigned int nTriedMultiplier = 0;
// Primecoin: try to find hash divisible by primorial
uint256 phash = primecoinBlock->blockHeaderHash;
mpz_class mpzHash;
mpz_set_uint256(mpzHash.get_mpz_t(), phash);
while ((phash < hashBlockHeaderLimit || !mpz_divisible_ui_p(mpzHash.get_mpz_t(), nHashFactor)) && primecoinBlock->nonce < MAX_NONCE) {
primecoinBlock->nonce += nonceStep;
primecoinBlock_generateHeaderHash(primecoinBlock, primecoinBlock->blockHeaderHash.begin());
phash = primecoinBlock->blockHeaderHash;
mpz_set_uint256(mpzHash.get_mpz_t(), phash);
}
//JLR DBG
//printf("Use nonce %d\n", primecoinBlock->nonce);
if (primecoinBlock->nonce >= MAX_NONCE)
{
//JLR DBG
printf("Nonce overflow\n");
break;
}
// Primecoin: primorial fixed multiplier
mpz_class mpzPrimorial;
unsigned int nRoundTests = 0;
unsigned int nRoundPrimesHit = 0;
// uint64 nPrimeTimerStart = getTimeMilliseconds(); unused?
//if( loopCount > 0 )
//{
// //primecoinBlock->nonce++;
// if (!PrimeTableGetNextPrime(nPrimorialMultiplier))
// error("PrimecoinMiner() : primorial increment overflow");
//}
Primorial(nPrimorialMultiplier, mpzPrimorial);
unsigned int nTests = 0;
unsigned int nPrimesHit = 0;
mpz_class mpzMultiplierMin = mpzPrimeMin * nHashFactor / mpzHash + 1;
while (mpzPrimorial < mpzMultiplierMin )
{
if (!PrimeTableGetNextPrime(nPrimorialMultiplier))
error("PrimecoinMiner() : primorial minimum overflow");
Primorial(nPrimorialMultiplier, mpzPrimorial);
}
mpz_class mpzFixedMultiplier;
if (mpzPrimorial > nHashFactor) {
mpzFixedMultiplier = mpzPrimorial / nHashFactor;
} else {
mpzFixedMultiplier = 1;
}
//JLR DBG
//printf("fixedMultiplier: %d nPrimorialMultiplier: %d\n", BN_get_word(&bnFixedMultiplier), nPrimorialMultiplier);
// Primecoin: mine for prime chain
unsigned int nProbableChainLength;
MineProbablePrimeChain(psieve, primecoinBlock, mpzFixedMultiplier, fNewBlock, nTriedMultiplier, nProbableChainLength, nTests, nPrimesHit, threadIndex, mpzHash, nPrimorialMultiplier);
#ifdef _WIN32
threadHearthBeat[threadIndex] = getTimeMilliseconds();
#endif
if (appQuitSignal)
{
printf( "Shutting down mining thread %d.\n", threadIndex);
return false;
}
//{
// // do nothing here, share is already submitted in MineProbablePrimeChain()
// //primecoinBlock->nonce += 0x00010000;
// primecoinBlock->nonce++;
// nPrimorialMultiplier = primeStats.nPrimorialMultiplier;
// //break;
//}
//psieve = NULL;
nRoundTests += nTests;
nRoundPrimesHit += nPrimesHit;
nPrimorialMultiplier = primeStats.nPrimorialMultiplier;
// added this
//if (fNewBlock)
//{
//}
primecoinBlock->nonce += nonceStep;
//primecoinBlock->timestamp = max(primecoinBlock->timestamp, (unsigned int) time(NULL));
loopCount++;
}
return true;
}
