c8b74258ba
I'm writing some wallet regression tests using -regtest mode, and need to generate an initial multi-hundred-block chain. Repeatedly calling setgenerate to generate one block is slow and doesn't work properly, because block creation happens asynchronously. This adds two features to setgenerate in -regtest mode: 1) Instead of being interpreted as number of threads to start, the third argument is the number of blocks to generate. 2) setgenerate will not return until the block creation threads have created the requested number of blocks.
681 lines
24 KiB
C++
681 lines
24 KiB
C++
// Copyright (c) 2009-2010 Satoshi Nakamoto
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// Copyright (c) 2009-2013 The Bitcoin developers
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// Distributed under the MIT/X11 software license, see the accompanying
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// file COPYING or http://www.opensource.org/licenses/mit-license.php.
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#include "miner.h"
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#include "core.h"
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#include "main.h"
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#include "net.h"
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#include "wallet.h"
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double dHashesPerSec = 0.0;
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int64_t nHPSTimerStart = 0;
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//////////////////////////////////////////////////////////////////////////////
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//
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// BitcoinMiner
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//
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int static FormatHashBlocks(void* pbuffer, unsigned int len)
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{
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unsigned char* pdata = (unsigned char*)pbuffer;
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unsigned int blocks = 1 + ((len + 8) / 64);
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unsigned char* pend = pdata + 64 * blocks;
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memset(pdata + len, 0, 64 * blocks - len);
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pdata[len] = 0x80;
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unsigned int bits = len * 8;
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pend[-1] = (bits >> 0) & 0xff;
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pend[-2] = (bits >> 8) & 0xff;
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pend[-3] = (bits >> 16) & 0xff;
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pend[-4] = (bits >> 24) & 0xff;
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return blocks;
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}
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static const unsigned int pSHA256InitState[8] =
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{0x6a09e667, 0xbb67ae85, 0x3c6ef372, 0xa54ff53a, 0x510e527f, 0x9b05688c, 0x1f83d9ab, 0x5be0cd19};
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void SHA256Transform(void* pstate, void* pinput, const void* pinit)
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{
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SHA256_CTX ctx;
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unsigned char data[64];
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SHA256_Init(&ctx);
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for (int i = 0; i < 16; i++)
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((uint32_t*)data)[i] = ByteReverse(((uint32_t*)pinput)[i]);
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for (int i = 0; i < 8; i++)
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ctx.h[i] = ((uint32_t*)pinit)[i];
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SHA256_Update(&ctx, data, sizeof(data));
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for (int i = 0; i < 8; i++)
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((uint32_t*)pstate)[i] = ctx.h[i];
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}
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//
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// ScanHash scans nonces looking for a hash with at least some zero bits.
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// It operates on big endian data. Caller does the byte reversing.
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// All input buffers are 16-byte aligned. nNonce is usually preserved
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// between calls, but periodically or if nNonce is 0xffff0000 or above,
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// the block is rebuilt and nNonce starts over at zero.
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//
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unsigned int static ScanHash_CryptoPP(char* pmidstate, char* pdata, char* phash1, char* phash, unsigned int& nHashesDone)
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{
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unsigned int& nNonce = *(unsigned int*)(pdata + 12);
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for (;;)
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{
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// Crypto++ SHA256
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// Hash pdata using pmidstate as the starting state into
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// pre-formatted buffer phash1, then hash phash1 into phash
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nNonce++;
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SHA256Transform(phash1, pdata, pmidstate);
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SHA256Transform(phash, phash1, pSHA256InitState);
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// Return the nonce if the hash has at least some zero bits,
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// caller will check if it has enough to reach the target
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if (((unsigned short*)phash)[14] == 0)
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return nNonce;
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// If nothing found after trying for a while, return -1
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if ((nNonce & 0xffff) == 0)
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{
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nHashesDone = 0xffff+1;
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return (unsigned int) -1;
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}
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if ((nNonce & 0xfff) == 0)
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boost::this_thread::interruption_point();
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}
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}
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// Some explaining would be appreciated
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class COrphan
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{
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public:
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CTransaction* ptx;
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set<uint256> setDependsOn;
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double dPriority;
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double dFeePerKb;
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COrphan(CTransaction* ptxIn)
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{
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ptx = ptxIn;
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dPriority = dFeePerKb = 0;
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}
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void print() const
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{
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LogPrintf("COrphan(hash=%s, dPriority=%.1f, dFeePerKb=%.1f)\n",
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ptx->GetHash().ToString().c_str(), dPriority, dFeePerKb);
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BOOST_FOREACH(uint256 hash, setDependsOn)
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LogPrintf(" setDependsOn %s\n", hash.ToString().c_str());
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}
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};
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uint64_t nLastBlockTx = 0;
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uint64_t nLastBlockSize = 0;
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// We want to sort transactions by priority and fee, so:
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typedef boost::tuple<double, double, CTransaction*> TxPriority;
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class TxPriorityCompare
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{
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bool byFee;
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public:
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TxPriorityCompare(bool _byFee) : byFee(_byFee) { }
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bool operator()(const TxPriority& a, const TxPriority& b)
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{
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if (byFee)
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{
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if (a.get<1>() == b.get<1>())
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return a.get<0>() < b.get<0>();
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return a.get<1>() < b.get<1>();
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}
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else
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{
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if (a.get<0>() == b.get<0>())
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return a.get<1>() < b.get<1>();
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return a.get<0>() < b.get<0>();
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}
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}
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};
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CBlockTemplate* CreateNewBlock(const CScript& scriptPubKeyIn)
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{
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// Create new block
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auto_ptr<CBlockTemplate> pblocktemplate(new CBlockTemplate());
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if(!pblocktemplate.get())
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return NULL;
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CBlock *pblock = &pblocktemplate->block; // pointer for convenience
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// Create coinbase tx
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CTransaction txNew;
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txNew.vin.resize(1);
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txNew.vin[0].prevout.SetNull();
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txNew.vout.resize(1);
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txNew.vout[0].scriptPubKey = scriptPubKeyIn;
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// Add our coinbase tx as first transaction
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pblock->vtx.push_back(txNew);
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pblocktemplate->vTxFees.push_back(-1); // updated at end
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pblocktemplate->vTxSigOps.push_back(-1); // updated at end
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// Largest block you're willing to create:
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unsigned int nBlockMaxSize = GetArg("-blockmaxsize", MAX_BLOCK_SIZE_GEN/2);
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// Limit to betweeen 1K and MAX_BLOCK_SIZE-1K for sanity:
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nBlockMaxSize = std::max((unsigned int)1000, std::min((unsigned int)(MAX_BLOCK_SIZE-1000), nBlockMaxSize));
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// How much of the block should be dedicated to high-priority transactions,
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// included regardless of the fees they pay
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unsigned int nBlockPrioritySize = GetArg("-blockprioritysize", DEFAULT_BLOCK_PRIORITY_SIZE);
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nBlockPrioritySize = std::min(nBlockMaxSize, nBlockPrioritySize);
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// Minimum block size you want to create; block will be filled with free transactions
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// until there are no more or the block reaches this size:
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unsigned int nBlockMinSize = GetArg("-blockminsize", 0);
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nBlockMinSize = std::min(nBlockMaxSize, nBlockMinSize);
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// Collect memory pool transactions into the block
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int64_t nFees = 0;
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{
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LOCK2(cs_main, mempool.cs);
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CBlockIndex* pindexPrev = chainActive.Tip();
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CCoinsViewCache view(*pcoinsTip, true);
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// Priority order to process transactions
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list<COrphan> vOrphan; // list memory doesn't move
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map<uint256, vector<COrphan*> > mapDependers;
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bool fPrintPriority = GetBoolArg("-printpriority", false);
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// This vector will be sorted into a priority queue:
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vector<TxPriority> vecPriority;
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vecPriority.reserve(mempool.mapTx.size());
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for (map<uint256, CTransaction>::iterator mi = mempool.mapTx.begin(); mi != mempool.mapTx.end(); ++mi)
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{
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CTransaction& tx = (*mi).second;
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if (tx.IsCoinBase() || !IsFinalTx(tx))
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continue;
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COrphan* porphan = NULL;
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double dPriority = 0;
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int64_t nTotalIn = 0;
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bool fMissingInputs = false;
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BOOST_FOREACH(const CTxIn& txin, tx.vin)
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{
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// Read prev transaction
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if (!view.HaveCoins(txin.prevout.hash))
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{
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// This should never happen; all transactions in the memory
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// pool should connect to either transactions in the chain
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// or other transactions in the memory pool.
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if (!mempool.mapTx.count(txin.prevout.hash))
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{
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LogPrintf("ERROR: mempool transaction missing input\n");
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if (fDebug) assert("mempool transaction missing input" == 0);
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fMissingInputs = true;
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if (porphan)
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vOrphan.pop_back();
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break;
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}
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// Has to wait for dependencies
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if (!porphan)
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{
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// Use list for automatic deletion
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vOrphan.push_back(COrphan(&tx));
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porphan = &vOrphan.back();
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}
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mapDependers[txin.prevout.hash].push_back(porphan);
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porphan->setDependsOn.insert(txin.prevout.hash);
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nTotalIn += mempool.mapTx[txin.prevout.hash].vout[txin.prevout.n].nValue;
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continue;
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}
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const CCoins &coins = view.GetCoins(txin.prevout.hash);
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int64_t nValueIn = coins.vout[txin.prevout.n].nValue;
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nTotalIn += nValueIn;
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int nConf = pindexPrev->nHeight - coins.nHeight + 1;
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dPriority += (double)nValueIn * nConf;
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}
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if (fMissingInputs) continue;
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// Priority is sum(valuein * age) / modified_txsize
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unsigned int nTxSize = ::GetSerializeSize(tx, SER_NETWORK, PROTOCOL_VERSION);
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unsigned int nTxSizeMod = nTxSize;
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// In order to avoid disincentivizing cleaning up the UTXO set we don't count
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// the constant overhead for each txin and up to 110 bytes of scriptSig (which
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// is enough to cover a compressed pubkey p2sh redemption) for priority.
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// Providing any more cleanup incentive than making additional inputs free would
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// risk encouraging people to create junk outputs to redeem later.
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BOOST_FOREACH(const CTxIn& txin, tx.vin)
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{
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unsigned int offset = 41U + min(110U, (unsigned int)txin.scriptSig.size());
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if (nTxSizeMod > offset)
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nTxSizeMod -= offset;
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}
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dPriority /= nTxSizeMod;
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// This is a more accurate fee-per-kilobyte than is used by the client code, because the
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// client code rounds up the size to the nearest 1K. That's good, because it gives an
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// incentive to create smaller transactions.
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double dFeePerKb = double(nTotalIn-GetValueOut(tx)) / (double(nTxSize)/1000.0);
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if (porphan)
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{
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porphan->dPriority = dPriority;
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porphan->dFeePerKb = dFeePerKb;
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}
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else
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vecPriority.push_back(TxPriority(dPriority, dFeePerKb, &(*mi).second));
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}
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// Collect transactions into block
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uint64_t nBlockSize = 1000;
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uint64_t nBlockTx = 0;
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int nBlockSigOps = 100;
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bool fSortedByFee = (nBlockPrioritySize <= 0);
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TxPriorityCompare comparer(fSortedByFee);
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std::make_heap(vecPriority.begin(), vecPriority.end(), comparer);
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while (!vecPriority.empty())
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{
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// Take highest priority transaction off the priority queue:
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double dPriority = vecPriority.front().get<0>();
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double dFeePerKb = vecPriority.front().get<1>();
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CTransaction& tx = *(vecPriority.front().get<2>());
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std::pop_heap(vecPriority.begin(), vecPriority.end(), comparer);
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vecPriority.pop_back();
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// Size limits
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unsigned int nTxSize = ::GetSerializeSize(tx, SER_NETWORK, PROTOCOL_VERSION);
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if (nBlockSize + nTxSize >= nBlockMaxSize)
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continue;
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// Legacy limits on sigOps:
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unsigned int nTxSigOps = GetLegacySigOpCount(tx);
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if (nBlockSigOps + nTxSigOps >= MAX_BLOCK_SIGOPS)
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continue;
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// Skip free transactions if we're past the minimum block size:
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if (fSortedByFee && (dFeePerKb < CTransaction::nMinTxFee) && (nBlockSize + nTxSize >= nBlockMinSize))
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continue;
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// Prioritize by fee once past the priority size or we run out of high-priority
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// transactions:
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if (!fSortedByFee &&
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((nBlockSize + nTxSize >= nBlockPrioritySize) || !AllowFree(dPriority)))
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{
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fSortedByFee = true;
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comparer = TxPriorityCompare(fSortedByFee);
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std::make_heap(vecPriority.begin(), vecPriority.end(), comparer);
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}
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if (!view.HaveInputs(tx))
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continue;
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int64_t nTxFees = view.GetValueIn(tx)-GetValueOut(tx);
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nTxSigOps += GetP2SHSigOpCount(tx, view);
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if (nBlockSigOps + nTxSigOps >= MAX_BLOCK_SIGOPS)
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continue;
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CValidationState state;
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if (!CheckInputs(tx, state, view, true, SCRIPT_VERIFY_P2SH))
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continue;
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CTxUndo txundo;
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uint256 hash = tx.GetHash();
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UpdateCoins(tx, state, view, txundo, pindexPrev->nHeight+1, hash);
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// Added
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pblock->vtx.push_back(tx);
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pblocktemplate->vTxFees.push_back(nTxFees);
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pblocktemplate->vTxSigOps.push_back(nTxSigOps);
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nBlockSize += nTxSize;
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++nBlockTx;
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nBlockSigOps += nTxSigOps;
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nFees += nTxFees;
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if (fPrintPriority)
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{
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LogPrintf("priority %.1f feeperkb %.1f txid %s\n",
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dPriority, dFeePerKb, tx.GetHash().ToString().c_str());
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}
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// Add transactions that depend on this one to the priority queue
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if (mapDependers.count(hash))
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{
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BOOST_FOREACH(COrphan* porphan, mapDependers[hash])
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{
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if (!porphan->setDependsOn.empty())
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{
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porphan->setDependsOn.erase(hash);
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if (porphan->setDependsOn.empty())
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{
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vecPriority.push_back(TxPriority(porphan->dPriority, porphan->dFeePerKb, porphan->ptx));
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std::push_heap(vecPriority.begin(), vecPriority.end(), comparer);
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}
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}
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}
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}
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}
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nLastBlockTx = nBlockTx;
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nLastBlockSize = nBlockSize;
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LogPrintf("CreateNewBlock(): total size %"PRIu64"\n", nBlockSize);
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pblock->vtx[0].vout[0].nValue = GetBlockValue(pindexPrev->nHeight+1, nFees);
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pblocktemplate->vTxFees[0] = -nFees;
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// Fill in header
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pblock->hashPrevBlock = pindexPrev->GetBlockHash();
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UpdateTime(*pblock, pindexPrev);
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pblock->nBits = GetNextWorkRequired(pindexPrev, pblock);
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pblock->nNonce = 0;
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pblock->vtx[0].vin[0].scriptSig = CScript() << OP_0 << OP_0;
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pblocktemplate->vTxSigOps[0] = GetLegacySigOpCount(pblock->vtx[0]);
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CBlockIndex indexDummy(*pblock);
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indexDummy.pprev = pindexPrev;
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indexDummy.nHeight = pindexPrev->nHeight + 1;
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CCoinsViewCache viewNew(*pcoinsTip, true);
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CValidationState state;
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if (!ConnectBlock(*pblock, state, &indexDummy, viewNew, true))
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throw std::runtime_error("CreateNewBlock() : ConnectBlock failed");
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}
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return pblocktemplate.release();
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}
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CBlockTemplate* CreateNewBlockWithKey(CReserveKey& reservekey)
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{
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CPubKey pubkey;
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if (!reservekey.GetReservedKey(pubkey))
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return NULL;
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CScript scriptPubKey = CScript() << pubkey << OP_CHECKSIG;
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return CreateNewBlock(scriptPubKey);
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}
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void IncrementExtraNonce(CBlock* pblock, CBlockIndex* pindexPrev, unsigned int& nExtraNonce)
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{
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// Update nExtraNonce
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static uint256 hashPrevBlock;
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if (hashPrevBlock != pblock->hashPrevBlock)
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{
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nExtraNonce = 0;
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hashPrevBlock = pblock->hashPrevBlock;
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}
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++nExtraNonce;
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unsigned int nHeight = pindexPrev->nHeight+1; // Height first in coinbase required for block.version=2
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pblock->vtx[0].vin[0].scriptSig = (CScript() << nHeight << CBigNum(nExtraNonce)) + COINBASE_FLAGS;
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assert(pblock->vtx[0].vin[0].scriptSig.size() <= 100);
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pblock->hashMerkleRoot = pblock->BuildMerkleTree();
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}
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void FormatHashBuffers(CBlock* pblock, char* pmidstate, char* pdata, char* phash1)
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{
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//
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// Pre-build hash buffers
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//
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struct
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{
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struct unnamed2
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{
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int nVersion;
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uint256 hashPrevBlock;
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uint256 hashMerkleRoot;
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unsigned int nTime;
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unsigned int nBits;
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unsigned int nNonce;
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}
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block;
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unsigned char pchPadding0[64];
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uint256 hash1;
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unsigned char pchPadding1[64];
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}
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tmp;
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memset(&tmp, 0, sizeof(tmp));
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tmp.block.nVersion = pblock->nVersion;
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tmp.block.hashPrevBlock = pblock->hashPrevBlock;
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tmp.block.hashMerkleRoot = pblock->hashMerkleRoot;
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tmp.block.nTime = pblock->nTime;
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tmp.block.nBits = pblock->nBits;
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tmp.block.nNonce = pblock->nNonce;
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FormatHashBlocks(&tmp.block, sizeof(tmp.block));
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FormatHashBlocks(&tmp.hash1, sizeof(tmp.hash1));
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// Byte swap all the input buffer
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for (unsigned int i = 0; i < sizeof(tmp)/4; i++)
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((unsigned int*)&tmp)[i] = ByteReverse(((unsigned int*)&tmp)[i]);
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// Precalc the first half of the first hash, which stays constant
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SHA256Transform(pmidstate, &tmp.block, pSHA256InitState);
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memcpy(pdata, &tmp.block, 128);
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memcpy(phash1, &tmp.hash1, 64);
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}
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bool CheckWork(CBlock* pblock, CWallet& wallet, CReserveKey& reservekey)
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{
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uint256 hash = pblock->GetHash();
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uint256 hashTarget = CBigNum().SetCompact(pblock->nBits).getuint256();
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if (hash > hashTarget)
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return false;
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//// debug print
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LogPrintf("BitcoinMiner:\n");
|
|
LogPrintf("proof-of-work found \n hash: %s \ntarget: %s\n", hash.GetHex().c_str(), hashTarget.GetHex().c_str());
|
|
pblock->print();
|
|
LogPrintf("generated %s\n", FormatMoney(pblock->vtx[0].vout[0].nValue).c_str());
|
|
|
|
// Found a solution
|
|
{
|
|
LOCK(cs_main);
|
|
if (pblock->hashPrevBlock != chainActive.Tip()->GetBlockHash())
|
|
return error("BitcoinMiner : generated block is stale");
|
|
|
|
// 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");
|
|
}
|
|
|
|
return true;
|
|
}
|
|
|
|
void static BitcoinMiner(CWallet *pwallet)
|
|
{
|
|
LogPrintf("BitcoinMiner started\n");
|
|
SetThreadPriority(THREAD_PRIORITY_LOWEST);
|
|
RenameThread("bitcoin-miner");
|
|
|
|
// Each thread has its own key and counter
|
|
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]);
|
|
|
|
if (hash <= hashTarget)
|
|
{
|
|
// Found a solution
|
|
pblock->nNonce = ByteReverse(nNonceFound);
|
|
assert(hash == pblock->GetHash());
|
|
|
|
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();
|
|
|
|
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;
|
|
{
|
|
LOCK(cs);
|
|
if (GetTimeMillis() - nHPSTimerStart > 4000)
|
|
{
|
|
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();
|
|
}
|
|
}
|
|
} }
|
|
catch (boost::thread_interrupted)
|
|
{
|
|
LogPrintf("BitcoinMiner terminated\n");
|
|
throw;
|
|
}
|
|
}
|
|
|
|
void GenerateBitcoins(bool fGenerate, CWallet* pwallet, int nThreads)
|
|
{
|
|
static boost::thread_group* minerThreads = NULL;
|
|
|
|
if (nThreads < 0) {
|
|
if (Params().NetworkID() == CChainParams::REGTEST)
|
|
nThreads = 1;
|
|
else
|
|
nThreads = boost::thread::hardware_concurrency();
|
|
}
|
|
|
|
if (minerThreads != NULL)
|
|
{
|
|
minerThreads->interrupt_all();
|
|
delete minerThreads;
|
|
minerThreads = NULL;
|
|
}
|
|
|
|
if (nThreads == 0 || !fGenerate)
|
|
return;
|
|
|
|
minerThreads = new boost::thread_group();
|
|
for (int i = 0; i < nThreads; i++)
|
|
minerThreads->create_thread(boost::bind(&BitcoinMiner, pwallet));
|
|
}
|
|
|
|
|
|
|