diff options
Diffstat (limited to 'src/miner.cpp')
-rw-r--r-- | src/miner.cpp | 448 |
1 files changed, 185 insertions, 263 deletions
diff --git a/src/miner.cpp b/src/miner.cpp index 3351908e65..17918a1280 100644 --- a/src/miner.cpp +++ b/src/miner.cpp @@ -3,90 +3,67 @@ // Distributed under the MIT/X11 software license, see the accompanying // file COPYING or http://www.opensource.org/licenses/mit-license.php. +#include <inttypes.h> + #include "miner.h" #include "core.h" +#include "hash.h" #include "main.h" #include "net.h" +#include "pow.h" #ifdef ENABLE_WALLET #include "wallet.h" #endif + +using namespace std; + ////////////////////////////////////////////////////////////////////////////// // // BitcoinMiner // -int static FormatHashBlocks(void* pbuffer, unsigned int len) -{ - unsigned char* pdata = (unsigned char*)pbuffer; - unsigned int blocks = 1 + ((len + 8) / 64); - unsigned char* pend = pdata + 64 * blocks; - memset(pdata + len, 0, 64 * blocks - len); - pdata[len] = 0x80; - unsigned int bits = len * 8; - pend[-1] = (bits >> 0) & 0xff; - pend[-2] = (bits >> 8) & 0xff; - pend[-3] = (bits >> 16) & 0xff; - pend[-4] = (bits >> 24) & 0xff; - return blocks; -} - -static const unsigned int pSHA256InitState[8] = -{0x6a09e667, 0xbb67ae85, 0x3c6ef372, 0xa54ff53a, 0x510e527f, 0x9b05688c, 0x1f83d9ab, 0x5be0cd19}; - -void SHA256Transform(void* pstate, void* pinput, const void* pinit) -{ - SHA256_CTX ctx; - unsigned char data[64]; - - SHA256_Init(&ctx); - - for (int i = 0; i < 16; i++) - ((uint32_t*)data)[i] = ByteReverse(((uint32_t*)pinput)[i]); - - for (int i = 0; i < 8; i++) - ctx.h[i] = ((uint32_t*)pinit)[i]; - - SHA256_Update(&ctx, data, sizeof(data)); - for (int i = 0; i < 8; i++) - ((uint32_t*)pstate)[i] = ctx.h[i]; -} - -// Some explaining would be appreciated +// +// Unconfirmed transactions in the memory pool often depend on other +// transactions in the memory pool. When we select transactions from the +// pool, we select by highest priority or fee rate, so we might consider +// transactions that depend on transactions that aren't yet in the block. +// The COrphan class keeps track of these 'temporary orphans' while +// CreateBlock is figuring out which transactions to include. +// class COrphan { public: const CTransaction* ptx; set<uint256> setDependsOn; + CFeeRate feeRate; double dPriority; - double dFeePerKb; - COrphan(const CTransaction* ptxIn) + COrphan(const CTransaction* ptxIn) : ptx(ptxIn), feeRate(0), dPriority(0) { - ptx = ptxIn; - dPriority = dFeePerKb = 0; } void print() const { - LogPrintf("COrphan(hash=%s, dPriority=%.1f, dFeePerKb=%.1f)\n", - ptx->GetHash().ToString(), dPriority, dFeePerKb); + LogPrintf("COrphan(hash=%s, dPriority=%.1f, fee=%s)\n", + ptx->GetHash().ToString(), dPriority, feeRate.ToString()); BOOST_FOREACH(uint256 hash, setDependsOn) LogPrintf(" setDependsOn %s\n", hash.ToString()); } }; - uint64_t nLastBlockTx = 0; uint64_t nLastBlockSize = 0; -// We want to sort transactions by priority and fee, so: -typedef boost::tuple<double, double, const CTransaction*> TxPriority; +// We want to sort transactions by priority and fee rate, so: +typedef boost::tuple<double, CFeeRate, const CTransaction*> TxPriority; class TxPriorityCompare { bool byFee; + public: TxPriorityCompare(bool _byFee) : byFee(_byFee) { } + bool operator()(const TxPriority& a, const TxPriority& b) { if (byFee) @@ -113,14 +90,14 @@ CBlockTemplate* CreateNewBlock(const CScript& scriptPubKeyIn) CBlock *pblock = &pblocktemplate->block; // pointer for convenience // Create coinbase tx - CTransaction txNew; + CMutableTransaction txNew; txNew.vin.resize(1); txNew.vin[0].prevout.SetNull(); txNew.vout.resize(1); txNew.vout[0].scriptPubKey = scriptPubKeyIn; - // Add our coinbase tx as first transaction - pblock->vtx.push_back(txNew); + // Add dummy coinbase tx as first transaction + pblock->vtx.push_back(CTransaction()); pblocktemplate->vTxFees.push_back(-1); // updated at end pblocktemplate->vTxSigOps.push_back(-1); // updated at end @@ -141,6 +118,7 @@ CBlockTemplate* CreateNewBlock(const CScript& scriptPubKeyIn) // Collect memory pool transactions into the block int64_t nFees = 0; + { LOCK2(cs_main, mempool.cs); CBlockIndex* pindexPrev = chainActive.Tip(); @@ -210,18 +188,18 @@ CBlockTemplate* CreateNewBlock(const CScript& scriptPubKeyIn) unsigned int nTxSize = ::GetSerializeSize(tx, SER_NETWORK, PROTOCOL_VERSION); dPriority = tx.ComputePriority(dPriority, nTxSize); - // This is a more accurate fee-per-kilobyte than is used by the client code, because the - // client code rounds up the size to the nearest 1K. That's good, because it gives an - // incentive to create smaller transactions. - double dFeePerKb = double(nTotalIn-tx.GetValueOut()) / (double(nTxSize)/1000.0); + uint256 hash = tx.GetHash(); + mempool.ApplyDeltas(hash, dPriority, nTotalIn); + + CFeeRate feeRate(nTotalIn-tx.GetValueOut(), nTxSize); if (porphan) { porphan->dPriority = dPriority; - porphan->dFeePerKb = dFeePerKb; + porphan->feeRate = feeRate; } else - vecPriority.push_back(TxPriority(dPriority, dFeePerKb, &mi->second.GetTx())); + vecPriority.push_back(TxPriority(dPriority, feeRate, &mi->second.GetTx())); } // Collect transactions into block @@ -237,7 +215,7 @@ CBlockTemplate* CreateNewBlock(const CScript& scriptPubKeyIn) { // Take highest priority transaction off the priority queue: double dPriority = vecPriority.front().get<0>(); - double dFeePerKb = vecPriority.front().get<1>(); + CFeeRate feeRate = vecPriority.front().get<1>(); const CTransaction& tx = *(vecPriority.front().get<2>()); std::pop_heap(vecPriority.begin(), vecPriority.end(), comparer); @@ -254,10 +232,14 @@ CBlockTemplate* CreateNewBlock(const CScript& scriptPubKeyIn) continue; // Skip free transactions if we're past the minimum block size: - if (fSortedByFee && (dFeePerKb < CTransaction::nMinRelayTxFee) && (nBlockSize + nTxSize >= nBlockMinSize)) + const uint256& hash = tx.GetHash(); + double dPriorityDelta = 0; + int64_t nFeeDelta = 0; + mempool.ApplyDeltas(hash, dPriorityDelta, nFeeDelta); + if (fSortedByFee && (dPriorityDelta <= 0) && (nFeeDelta <= 0) && (feeRate < ::minRelayTxFee) && (nBlockSize + nTxSize >= nBlockMinSize)) continue; - // Prioritize by fee once past the priority size or we run out of high-priority + // Prioritise by fee once past the priority size or we run out of high-priority // transactions: if (!fSortedByFee && ((nBlockSize + nTxSize >= nBlockPrioritySize) || !AllowFree(dPriority))) @@ -276,13 +258,15 @@ CBlockTemplate* CreateNewBlock(const CScript& scriptPubKeyIn) if (nBlockSigOps + nTxSigOps >= MAX_BLOCK_SIGOPS) continue; + // Note that flags: we don't want to set mempool/IsStandard() + // policy here, but we still have to ensure that the block we + // create only contains transactions that are valid in new blocks. CValidationState state; - if (!CheckInputs(tx, state, view, true, SCRIPT_VERIFY_P2SH)) + if (!CheckInputs(tx, state, view, true, MANDATORY_SCRIPT_VERIFY_FLAGS)) continue; CTxUndo txundo; - uint256 hash = tx.GetHash(); - UpdateCoins(tx, state, view, txundo, pindexPrev->nHeight+1, hash); + UpdateCoins(tx, state, view, txundo, pindexPrev->nHeight+1); // Added pblock->vtx.push_back(tx); @@ -295,8 +279,8 @@ CBlockTemplate* CreateNewBlock(const CScript& scriptPubKeyIn) if (fPrintPriority) { - LogPrintf("priority %.1f feeperkb %.1f txid %s\n", - dPriority, dFeePerKb, tx.GetHash().ToString()); + LogPrintf("priority %.1f fee %s txid %s\n", + dPriority, feeRate.ToString(), tx.GetHash().ToString()); } // Add transactions that depend on this one to the priority queue @@ -309,7 +293,7 @@ CBlockTemplate* CreateNewBlock(const CScript& scriptPubKeyIn) porphan->setDependsOn.erase(hash); if (porphan->setDependsOn.empty()) { - vecPriority.push_back(TxPriority(porphan->dPriority, porphan->dFeePerKb, porphan->ptx)); + vecPriority.push_back(TxPriority(porphan->dPriority, porphan->feeRate, porphan->ptx)); std::push_heap(vecPriority.begin(), vecPriority.end(), comparer); } } @@ -321,7 +305,10 @@ CBlockTemplate* CreateNewBlock(const CScript& scriptPubKeyIn) nLastBlockSize = nBlockSize; LogPrintf("CreateNewBlock(): total size %u\n", nBlockSize); - pblock->vtx[0].vout[0].nValue = GetBlockValue(pindexPrev->nHeight+1, nFees); + // Compute final coinbase transaction. + txNew.vout[0].nValue = GetBlockValue(pindexPrev->nHeight+1, nFees); + txNew.vin[0].scriptSig = CScript() << OP_0 << OP_0; + pblock->vtx[0] = txNew; pblocktemplate->vTxFees[0] = -nFees; // Fill in header @@ -329,7 +316,6 @@ CBlockTemplate* CreateNewBlock(const CScript& scriptPubKeyIn) UpdateTime(*pblock, pindexPrev); pblock->nBits = GetNextWorkRequired(pindexPrev, pblock); pblock->nNonce = 0; - pblock->vtx[0].vin[0].scriptSig = CScript() << OP_0 << OP_0; pblocktemplate->vTxSigOps[0] = GetLegacySigOpCount(pblock->vtx[0]); CBlockIndex indexDummy(*pblock); @@ -355,58 +341,14 @@ void IncrementExtraNonce(CBlock* pblock, CBlockIndex* pindexPrev, unsigned int& } ++nExtraNonce; unsigned int nHeight = pindexPrev->nHeight+1; // Height first in coinbase required for block.version=2 - pblock->vtx[0].vin[0].scriptSig = (CScript() << nHeight << CBigNum(nExtraNonce)) + COINBASE_FLAGS; - assert(pblock->vtx[0].vin[0].scriptSig.size() <= 100); + CMutableTransaction txCoinbase(pblock->vtx[0]); + txCoinbase.vin[0].scriptSig = (CScript() << nHeight << CScriptNum(nExtraNonce)) + COINBASE_FLAGS; + assert(txCoinbase.vin[0].scriptSig.size() <= 100); + pblock->vtx[0] = txCoinbase; pblock->hashMerkleRoot = pblock->BuildMerkleTree(); } - -void FormatHashBuffers(CBlock* pblock, char* pmidstate, char* pdata, char* phash1) -{ - // - // Pre-build hash buffers - // - struct - { - struct unnamed2 - { - int nVersion; - uint256 hashPrevBlock; - uint256 hashMerkleRoot; - unsigned int nTime; - unsigned int nBits; - unsigned int nNonce; - } - block; - unsigned char pchPadding0[64]; - uint256 hash1; - unsigned char pchPadding1[64]; - } - tmp; - memset(&tmp, 0, sizeof(tmp)); - - tmp.block.nVersion = pblock->nVersion; - tmp.block.hashPrevBlock = pblock->hashPrevBlock; - tmp.block.hashMerkleRoot = pblock->hashMerkleRoot; - tmp.block.nTime = pblock->nTime; - tmp.block.nBits = pblock->nBits; - tmp.block.nNonce = pblock->nNonce; - - FormatHashBlocks(&tmp.block, sizeof(tmp.block)); - FormatHashBlocks(&tmp.hash1, sizeof(tmp.hash1)); - - // Byte swap all the input buffer - for (unsigned int i = 0; i < sizeof(tmp)/4; i++) - ((unsigned int*)&tmp)[i] = ByteReverse(((unsigned int*)&tmp)[i]); - - // Precalc the first half of the first hash, which stays constant - SHA256Transform(pmidstate, &tmp.block, pSHA256InitState); - - memcpy(pdata, &tmp.block, 128); - memcpy(phash1, &tmp.hash1, 64); -} - #ifdef ENABLE_WALLET ////////////////////////////////////////////////////////////////////////////// // @@ -417,34 +359,34 @@ int64_t nHPSTimerStart = 0; // // ScanHash scans nonces looking for a hash with at least some zero bits. -// It operates on big endian data. Caller does the byte reversing. -// All input buffers are 16-byte aligned. nNonce is usually preserved -// between calls, but periodically or if nNonce is 0xffff0000 or above, -// the block is rebuilt and nNonce starts over at zero. +// The nonce is usually preserved between calls, but periodically or if the +// nonce is 0xffff0000 or above, the block is rebuilt and nNonce starts over at +// zero. // -unsigned int static ScanHash_CryptoPP(char* pmidstate, char* pdata, char* phash1, char* phash, unsigned int& nHashesDone) +bool static ScanHash(const CBlockHeader *pblock, uint32_t& nNonce, uint256 *phash) { - unsigned int& nNonce = *(unsigned int*)(pdata + 12); - for (;;) - { - // Crypto++ SHA256 - // Hash pdata using pmidstate as the starting state into - // pre-formatted buffer phash1, then hash phash1 into phash + // Write the first 76 bytes of the block header to a double-SHA256 state. + CHash256 hasher; + CDataStream ss(SER_NETWORK, PROTOCOL_VERSION); + ss << *pblock; + assert(ss.size() == 80); + hasher.Write((unsigned char*)&ss[0], 76); + + while (true) { nNonce++; - SHA256Transform(phash1, pdata, pmidstate); - SHA256Transform(phash, phash1, pSHA256InitState); + + // Write the last 4 bytes of the block header (the nonce) to a copy of + // the double-SHA256 state, and compute the result. + CHash256(hasher).Write((unsigned char*)&nNonce, 4).Finalize((unsigned char*)phash); // Return the nonce if the hash has at least some zero bits, // caller will check if it has enough to reach the target - if (((unsigned short*)phash)[14] == 0) - return nNonce; + if (((uint16_t*)phash)[15] == 0) + return true; // If nothing found after trying for a while, return -1 if ((nNonce & 0xffff) == 0) - { - nHashesDone = 0xffff+1; - return (unsigned int) -1; - } + return false; if ((nNonce & 0xfff) == 0) boost::this_thread::interruption_point(); } @@ -463,7 +405,7 @@ CBlockTemplate* CreateNewBlockWithKey(CReserveKey& reservekey) bool CheckWork(CBlock* pblock, CWallet& wallet, CReserveKey& reservekey) { uint256 hash = pblock->GetHash(); - uint256 hashTarget = CBigNum().SetCompact(pblock->nBits).getuint256(); + uint256 hashTarget = uint256().SetCompact(pblock->nBits); if (hash > hashTarget) return false; @@ -479,22 +421,22 @@ bool CheckWork(CBlock* pblock, CWallet& wallet, CReserveKey& reservekey) LOCK(cs_main); if (pblock->hashPrevBlock != chainActive.Tip()->GetBlockHash()) return error("BitcoinMiner : generated block is stale"); + } - // Remove key from key pool - reservekey.KeepKey(); + // Remove key from key pool + reservekey.KeepKey(); - // Track how many getdata requests this block gets - { - LOCK(wallet.cs_wallet); - wallet.mapRequestCount[pblock->GetHash()] = 0; - } - - // Process this block the same as if we had received it from another node - CValidationState state; - if (!ProcessBlock(state, NULL, pblock)) - return error("BitcoinMiner : ProcessBlock, block not accepted"); + // Track how many getdata requests this block gets + { + LOCK(wallet.cs_wallet); + wallet.mapRequestCount[pblock->GetHash()] = 0; } + // Process this block the same as if we had received it from another node + CValidationState state; + if (!ProcessBlock(state, NULL, pblock)) + return error("BitcoinMiner : ProcessBlock, block not accepted"); + return true; } @@ -508,135 +450,115 @@ void static BitcoinMiner(CWallet *pwallet) CReserveKey reservekey(pwallet); unsigned int nExtraNonce = 0; - try { while (true) { - if (Params().NetworkID() != CChainParams::REGTEST) { - // Busy-wait for the network to come online so we don't waste time mining - // on an obsolete chain. In regtest mode we expect to fly solo. - while (vNodes.empty()) - MilliSleep(1000); - } - - // - // Create new block - // - unsigned int nTransactionsUpdatedLast = mempool.GetTransactionsUpdated(); - CBlockIndex* pindexPrev = chainActive.Tip(); - - auto_ptr<CBlockTemplate> pblocktemplate(CreateNewBlockWithKey(reservekey)); - if (!pblocktemplate.get()) - return; - CBlock *pblock = &pblocktemplate->block; - IncrementExtraNonce(pblock, pindexPrev, nExtraNonce); - - LogPrintf("Running BitcoinMiner with %"PRIszu" transactions in block (%u bytes)\n", pblock->vtx.size(), - ::GetSerializeSize(*pblock, SER_NETWORK, PROTOCOL_VERSION)); - - // - // Pre-build hash buffers - // - char pmidstatebuf[32+16]; char* pmidstate = alignup<16>(pmidstatebuf); - char pdatabuf[128+16]; char* pdata = alignup<16>(pdatabuf); - char phash1buf[64+16]; char* phash1 = alignup<16>(phash1buf); - - FormatHashBuffers(pblock, pmidstate, pdata, phash1); - - unsigned int& nBlockTime = *(unsigned int*)(pdata + 64 + 4); - unsigned int& nBlockBits = *(unsigned int*)(pdata + 64 + 8); - unsigned int& nBlockNonce = *(unsigned int*)(pdata + 64 + 12); - - - // - // Search - // - int64_t nStart = GetTime(); - uint256 hashTarget = CBigNum().SetCompact(pblock->nBits).getuint256(); - uint256 hashbuf[2]; - uint256& hash = *alignup<16>(hashbuf); - while (true) - { - unsigned int nHashesDone = 0; - unsigned int nNonceFound; - - // Crypto++ SHA256 - nNonceFound = ScanHash_CryptoPP(pmidstate, pdata + 64, phash1, - (char*)&hash, nHashesDone); - - // Check if something found - if (nNonceFound != (unsigned int) -1) - { - for (unsigned int i = 0; i < sizeof(hash)/4; i++) - ((unsigned int*)&hash)[i] = ByteReverse(((unsigned int*)&hash)[i]); + try { + while (true) { + if (Params().MiningRequiresPeers()) { + // Busy-wait for the network to come online so we don't waste time mining + // on an obsolete chain. In regtest mode we expect to fly solo. + while (vNodes.empty()) + MilliSleep(1000); + } - if (hash <= hashTarget) + // + // Create new block + // + unsigned int nTransactionsUpdatedLast = mempool.GetTransactionsUpdated(); + CBlockIndex* pindexPrev = chainActive.Tip(); + + auto_ptr<CBlockTemplate> pblocktemplate(CreateNewBlockWithKey(reservekey)); + if (!pblocktemplate.get()) + return; + CBlock *pblock = &pblocktemplate->block; + IncrementExtraNonce(pblock, pindexPrev, nExtraNonce); + + LogPrintf("Running BitcoinMiner with %u transactions in block (%u bytes)\n", pblock->vtx.size(), + ::GetSerializeSize(*pblock, SER_NETWORK, PROTOCOL_VERSION)); + + // + // Search + // + int64_t nStart = GetTime(); + uint256 hashTarget = uint256().SetCompact(pblock->nBits); + uint256 hash; + uint32_t nNonce = 0; + uint32_t nOldNonce = 0; + while (true) { + bool fFound = ScanHash(pblock, nNonce, &hash); + uint32_t nHashesDone = nNonce - nOldNonce; + nOldNonce = nNonce; + + // Check if something found + if (fFound) { - // Found a solution - pblock->nNonce = ByteReverse(nNonceFound); - assert(hash == pblock->GetHash()); + if (hash <= hashTarget) + { + // Found a solution + pblock->nNonce = nNonce; + assert(hash == pblock->GetHash()); - SetThreadPriority(THREAD_PRIORITY_NORMAL); - CheckWork(pblock, *pwallet, reservekey); - SetThreadPriority(THREAD_PRIORITY_LOWEST); + SetThreadPriority(THREAD_PRIORITY_NORMAL); + CheckWork(pblock, *pwallet, reservekey); + SetThreadPriority(THREAD_PRIORITY_LOWEST); - // In regression test mode, stop mining after a block is found. This - // allows developers to controllably generate a block on demand. - if (Params().NetworkID() == CChainParams::REGTEST) - throw boost::thread_interrupted(); + // In regression test mode, stop mining after a block is found. + if (Params().MineBlocksOnDemand()) + throw boost::thread_interrupted(); - break; + break; + } } - } - // Meter hashes/sec - static int64_t nHashCounter; - if (nHPSTimerStart == 0) - { - nHPSTimerStart = GetTimeMillis(); - nHashCounter = 0; - } - else - nHashCounter += nHashesDone; - if (GetTimeMillis() - nHPSTimerStart > 4000) - { - static CCriticalSection cs; + // Meter hashes/sec + static int64_t nHashCounter; + if (nHPSTimerStart == 0) { - LOCK(cs); - if (GetTimeMillis() - nHPSTimerStart > 4000) + nHPSTimerStart = GetTimeMillis(); + nHashCounter = 0; + } + else + nHashCounter += nHashesDone; + if (GetTimeMillis() - nHPSTimerStart > 4000) + { + static CCriticalSection cs; { - dHashesPerSec = 1000.0 * nHashCounter / (GetTimeMillis() - nHPSTimerStart); - nHPSTimerStart = GetTimeMillis(); - nHashCounter = 0; - static int64_t nLogTime; - if (GetTime() - nLogTime > 30 * 60) + LOCK(cs); + if (GetTimeMillis() - nHPSTimerStart > 4000) { - nLogTime = GetTime(); - LogPrintf("hashmeter %6.0f khash/s\n", dHashesPerSec/1000.0); + dHashesPerSec = 1000.0 * nHashCounter / (GetTimeMillis() - nHPSTimerStart); + nHPSTimerStart = GetTimeMillis(); + nHashCounter = 0; + static int64_t nLogTime; + if (GetTime() - nLogTime > 30 * 60) + { + nLogTime = GetTime(); + LogPrintf("hashmeter %6.0f khash/s\n", dHashesPerSec/1000.0); + } } } } - } - // Check for stop or if block needs to be rebuilt - boost::this_thread::interruption_point(); - if (vNodes.empty() && Params().NetworkID() != CChainParams::REGTEST) - break; - if (nBlockNonce >= 0xffff0000) - break; - if (mempool.GetTransactionsUpdated() != nTransactionsUpdatedLast && GetTime() - nStart > 60) - break; - if (pindexPrev != chainActive.Tip()) - break; - - // Update nTime every few seconds - UpdateTime(*pblock, pindexPrev); - nBlockTime = ByteReverse(pblock->nTime); - if (TestNet()) - { - // Changing pblock->nTime can change work required on testnet: - nBlockBits = ByteReverse(pblock->nBits); - hashTarget = CBigNum().SetCompact(pblock->nBits).getuint256(); + // Check for stop or if block needs to be rebuilt + boost::this_thread::interruption_point(); + // Regtest mode doesn't require peers + if (vNodes.empty() && Params().MiningRequiresPeers()) + break; + if (nNonce >= 0xffff0000) + break; + if (mempool.GetTransactionsUpdated() != nTransactionsUpdatedLast && GetTime() - nStart > 60) + break; + if (pindexPrev != chainActive.Tip()) + break; + + // Update nTime every few seconds + UpdateTime(*pblock, pindexPrev); + if (Params().AllowMinDifficultyBlocks()) + { + // Changing pblock->nTime can change work required on testnet: + hashTarget.SetCompact(pblock->nBits); + } } } - } } + } catch (boost::thread_interrupted) { LogPrintf("BitcoinMiner terminated\n"); @@ -649,8 +571,9 @@ void GenerateBitcoins(bool fGenerate, CWallet* pwallet, int nThreads) static boost::thread_group* minerThreads = NULL; if (nThreads < 0) { - if (Params().NetworkID() == CChainParams::REGTEST) - nThreads = 1; + // In regtest threads defaults to 1 + if (Params().DefaultMinerThreads()) + nThreads = Params().DefaultMinerThreads(); else nThreads = boost::thread::hardware_concurrency(); } @@ -670,5 +593,4 @@ void GenerateBitcoins(bool fGenerate, CWallet* pwallet, int nThreads) minerThreads->create_thread(boost::bind(&BitcoinMiner, pwallet)); } -#endif - +#endif // ENABLE_WALLET |