From 8d1de43f0cbc79940d870d0ba09c7d28dd812ef8 Mon Sep 17 00:00:00 2001 From: Leviathn Date: Wed, 10 Feb 2016 18:29:13 -0800 Subject: Remove internal miner This code removes the internal miner which is only useful on Testnet. This leaves the internal miner that is useful on RegTest intact. --- src/miner.cpp | 203 ---------------------------------------------------------- 1 file changed, 203 deletions(-) (limited to 'src/miner.cpp') diff --git a/src/miner.cpp b/src/miner.cpp index c454c0279c..41f4f1cdb6 100644 --- a/src/miner.cpp +++ b/src/miner.cpp @@ -315,206 +315,3 @@ void IncrementExtraNonce(CBlock* pblock, const CBlockIndex* pindexPrev, unsigned pblock->vtx[0] = txCoinbase; pblock->hashMerkleRoot = BlockMerkleRoot(*pblock); } - -////////////////////////////////////////////////////////////////////////////// -// -// Internal miner -// - -// -// ScanHash scans nonces looking for a hash with at least some zero bits. -// 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. -// -bool static ScanHash(const CBlockHeader *pblock, uint32_t& nNonce, uint256 *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++; - - // 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 (((uint16_t*)phash)[15] == 0) - return true; - - // If nothing found after trying for a while, return -1 - if ((nNonce & 0xfff) == 0) - return false; - } -} - -static bool ProcessBlockFound(const CBlock* pblock, const CChainParams& chainparams) -{ - LogPrintf("%s\n", pblock->ToString()); - LogPrintf("generated %s\n", FormatMoney(pblock->vtx[0].vout[0].nValue)); - - // Found a solution - { - LOCK(cs_main); - if (pblock->hashPrevBlock != chainActive.Tip()->GetBlockHash()) - return error("BitcoinMiner: generated block is stale"); - } - - // Inform about the new block - GetMainSignals().BlockFound(pblock->GetHash()); - - // Process this block the same as if we had received it from another node - CValidationState state; - if (!ProcessNewBlock(state, chainparams, NULL, pblock, true, NULL)) - return error("BitcoinMiner: ProcessNewBlock, block not accepted"); - - return true; -} - -void static BitcoinMiner(const CChainParams& chainparams) -{ - LogPrintf("BitcoinMiner started\n"); - SetThreadPriority(THREAD_PRIORITY_LOWEST); - RenameThread("bitcoin-miner"); - - unsigned int nExtraNonce = 0; - - boost::shared_ptr coinbaseScript; - GetMainSignals().ScriptForMining(coinbaseScript); - - try { - // Throw an error if no script was provided. This can happen - // due to some internal error but also if the keypool is empty. - // In the latter case, already the pointer is NULL. - if (!coinbaseScript || coinbaseScript->reserveScript.empty()) - throw std::runtime_error("No coinbase script available (mining requires a wallet)"); - - while (true) { - if (chainparams.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. - do { - bool fvNodesEmpty; - { - LOCK(cs_vNodes); - fvNodesEmpty = vNodes.empty(); - } - if (!fvNodesEmpty && !IsInitialBlockDownload()) - break; - MilliSleep(1000); - } while (true); - } - - // - // Create new block - // - unsigned int nTransactionsUpdatedLast = mempool.GetTransactionsUpdated(); - CBlockIndex* pindexPrev = chainActive.Tip(); - - auto_ptr pblocktemplate(CreateNewBlock(chainparams, coinbaseScript->reserveScript)); - if (!pblocktemplate.get()) - { - LogPrintf("Error in BitcoinMiner: Keypool ran out, please call keypoolrefill before restarting the mining thread\n"); - 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(); - arith_uint256 hashTarget = arith_uint256().SetCompact(pblock->nBits); - uint256 hash; - uint32_t nNonce = 0; - while (true) { - // Check if something found - if (ScanHash(pblock, nNonce, &hash)) - { - if (UintToArith256(hash) <= hashTarget) - { - // Found a solution - pblock->nNonce = nNonce; - assert(hash == pblock->GetHash()); - - SetThreadPriority(THREAD_PRIORITY_NORMAL); - LogPrintf("BitcoinMiner:\n"); - LogPrintf("proof-of-work found \n hash: %s \ntarget: %s\n", hash.GetHex(), hashTarget.GetHex()); - ProcessBlockFound(pblock, chainparams); - SetThreadPriority(THREAD_PRIORITY_LOWEST); - coinbaseScript->KeepScript(); - - // In regression test mode, stop mining after a block is found. - if (chainparams.MineBlocksOnDemand()) - throw boost::thread_interrupted(); - - break; - } - } - - // Check for stop or if block needs to be rebuilt - boost::this_thread::interruption_point(); - // Regtest mode doesn't require peers - if (vNodes.empty() && chainparams.MiningRequiresPeers()) - break; - if (nNonce >= 0xffff0000) - break; - if (mempool.GetTransactionsUpdated() != nTransactionsUpdatedLast && GetTime() - nStart > 60) - break; - if (pindexPrev != chainActive.Tip()) - break; - - // Update nTime every few seconds - if (UpdateTime(pblock, chainparams.GetConsensus(), pindexPrev) < 0) - break; // Recreate the block if the clock has run backwards, - // so that we can use the correct time. - if (chainparams.GetConsensus().fPowAllowMinDifficultyBlocks) - { - // Changing pblock->nTime can change work required on testnet: - hashTarget.SetCompact(pblock->nBits); - } - } - } - } - catch (const boost::thread_interrupted&) - { - LogPrintf("BitcoinMiner terminated\n"); - throw; - } - catch (const std::runtime_error &e) - { - LogPrintf("BitcoinMiner runtime error: %s\n", e.what()); - return; - } -} - -void GenerateBitcoins(bool fGenerate, int nThreads, const CChainParams& chainparams) -{ - static boost::thread_group* minerThreads = NULL; - - if (nThreads < 0) - nThreads = GetNumCores(); - - 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, boost::cref(chainparams))); -} -- cgit v1.2.3