Paweł Bylica
8 years ago
4 changed files with 0 additions and 153 deletions
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/*
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This file is part of cpp-ethereum. |
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cpp-ethereum is free software: you can redistribute it and/or modify |
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it under the terms of the GNU General Public License as published by |
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the Free Software Foundation, either version 3 of the License, or |
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(at your option) any later version. |
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cpp-ethereum is distributed in the hope that it will be useful, |
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but WITHOUT ANY WARRANTY; without even the implied warranty of |
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
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GNU General Public License for more details. |
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You should have received a copy of the GNU General Public License |
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along with cpp-ethereum. If not, see <http://www.gnu.org/licenses/>.
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*/ |
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/** @file EthashCPUMiner.cpp
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* @author Gav Wood <i@gavwood.com> |
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* @date 2014 |
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* |
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* Determines the PoW algorithm. |
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*/ |
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#include "EthashCPUMiner.h" |
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#include <thread> |
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#include <chrono> |
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#include <boost/algorithm/string.hpp> |
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#include <random> |
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using namespace std; |
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using namespace dev; |
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using namespace eth; |
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unsigned EthashCPUMiner::s_numInstances = 0; |
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EthashCPUMiner::EthashCPUMiner(GenericMiner<EthashProofOfWork>::ConstructionInfo const& _ci): |
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GenericMiner<EthashProofOfWork>(_ci), Worker("miner" + toString(index())) |
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{ |
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} |
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EthashCPUMiner::~EthashCPUMiner() |
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{ |
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} |
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void EthashCPUMiner::kickOff() |
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{ |
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stopWorking(); |
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startWorking(); |
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} |
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void EthashCPUMiner::pause() |
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{ |
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stopWorking(); |
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} |
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void EthashCPUMiner::workLoop() |
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{ |
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auto tid = std::this_thread::get_id(); |
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static std::mt19937_64 s_eng((time(0) + std::hash<decltype(tid)>()(tid))); |
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uint64_t tryNonce = s_eng(); |
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ethash_return_value ethashReturn; |
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WorkPackage w = work(); |
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EthashAux::FullType dag; |
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while (!shouldStop() && !dag) |
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{ |
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while (!shouldStop() && EthashAux::computeFull(w.seedHash, true) != 100) |
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this_thread::sleep_for(chrono::milliseconds(500)); |
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dag = EthashAux::full(w.seedHash, false); |
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} |
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h256 boundary = w.boundary; |
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unsigned hashCount = 1; |
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for (; !shouldStop(); tryNonce++, hashCount++) |
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{ |
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ethashReturn = ethash_full_compute(dag->full, *(ethash_h256_t*)w.headerHash.data(), tryNonce); |
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h256 value = h256((uint8_t*)ðashReturn.result, h256::ConstructFromPointer); |
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if (value <= boundary && submitProof(EthashProofOfWork::Solution{(h64)(u64)tryNonce, h256((uint8_t*)ðashReturn.mix_hash, h256::ConstructFromPointer)})) |
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break; |
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if (!(hashCount % 100)) |
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accumulateHashes(100); |
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} |
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} |
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std::string EthashCPUMiner::platformInfo() |
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{ |
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return toString(std::thread::hardware_concurrency()) + "-thread CPU"; |
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} |
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@ -1,57 +0,0 @@ |
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/*
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This file is part of cpp-ethereum. |
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cpp-ethereum is free software: you can redistribute it and/or modify |
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it under the terms of the GNU General Public License as published by |
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the Free Software Foundation, either version 3 of the License, or |
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(at your option) any later version. |
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|
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cpp-ethereum is distributed in the hope that it will be useful, |
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but WITHOUT ANY WARRANTY; without even the implied warranty of |
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
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GNU General Public License for more details. |
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|
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You should have received a copy of the GNU General Public License |
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along with cpp-ethereum. If not, see <http://www.gnu.org/licenses/>.
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*/ |
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/** @file EthashCPUMiner.h
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* @author Gav Wood <i@gavwood.com> |
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* @date 2014 |
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* |
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* Determines the PoW algorithm. |
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*/ |
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#pragma once |
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#include "libdevcore/Worker.h" |
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#include "EthashAux.h" |
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#include "Miner.h" |
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namespace dev |
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{ |
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namespace eth |
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{ |
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class EthashCPUMiner: public GenericMiner<EthashProofOfWork>, Worker |
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{ |
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public: |
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EthashCPUMiner(GenericMiner<EthashProofOfWork>::ConstructionInfo const& _ci); |
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~EthashCPUMiner(); |
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static unsigned instances() { return s_numInstances > 0 ? s_numInstances : std::thread::hardware_concurrency(); } |
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static std::string platformInfo(); |
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static void listDevices() {} |
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static bool configureGPU(unsigned, unsigned, unsigned, unsigned, unsigned, bool, unsigned, uint64_t) { return false; } |
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static void setNumInstances(unsigned _instances) { s_numInstances = std::min<unsigned>(_instances, std::thread::hardware_concurrency()); } |
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protected: |
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void kickOff() override; |
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void pause() override; |
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private: |
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void workLoop() override; |
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static unsigned s_numInstances; |
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}; |
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} |
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} |
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