Gav Wood
11 years ago
6 changed files with 279 additions and 134 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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|
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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 Miner.cpp
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* @author Alex Leverington <nessence@gmail.com> |
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* @author Gav Wood <i@gavwood.com> |
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* @date 2014 |
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*/ |
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#include "Miner.h" |
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#include "State.h" |
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using namespace std; |
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using namespace eth; |
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Miner::Miner(MinerHost* _host, unsigned _id): |
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m_host(_host), |
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m_id(_id) |
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{ |
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} |
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void Miner::start() |
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{ |
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Guard l(x_work); |
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if (!m_work) |
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{ |
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m_stop = false; |
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m_work.reset(new thread([&]() |
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{ |
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setThreadName(("miner-" + toString(m_id)).c_str()); |
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m_miningStatus = Preparing; |
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while (!m_stop) |
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work(); |
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})); |
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} |
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} |
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void Miner::stop() |
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{ |
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Guard l(x_work); |
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if (m_work) |
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{ |
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m_stop = true; |
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m_work->join(); |
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m_work.reset(nullptr); |
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} |
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} |
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void Miner::work() |
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{ |
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// Do some mining.
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if ((m_pendingCount || m_host->force()) && m_miningStatus != Mined) |
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{ |
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// TODO: Separate "Miner" object.
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if (m_miningStatus == Preparing) |
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{ |
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m_miningStatus = Mining; |
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m_host->setupState(m_mineState); |
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m_pendingCount = m_mineState.pending().size(); |
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{ |
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Guard l(x_mineInfo); |
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m_mineProgress.best = (double)-1; |
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m_mineProgress.hashes = 0; |
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m_mineProgress.ms = 0; |
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} |
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} |
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// Mine for a while.
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MineInfo mineInfo = m_mineState.mine(100, m_host->turbo()); |
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{ |
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Guard l(x_mineInfo); |
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m_mineProgress.best = min(m_mineProgress.best, mineInfo.best); |
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m_mineProgress.current = mineInfo.best; |
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m_mineProgress.requirement = mineInfo.requirement; |
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m_mineProgress.ms += 100; |
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m_mineProgress.hashes += mineInfo.hashes; |
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m_mineHistory.push_back(mineInfo); |
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} |
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if (mineInfo.completed) |
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{ |
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m_host->onComplete(m_mineState); |
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m_miningStatus = Mined; |
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} |
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} |
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else |
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{ |
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this_thread::sleep_for(chrono::milliseconds(100)); |
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} |
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} |
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@ -0,0 +1,121 @@ |
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/*
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This file is part of cpp-ethereum. |
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|
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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 Miner.h
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* @author Alex Leverington <nessence@gmail.com> |
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* @author Gav Wood <i@gavwood.com> |
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* @date 2014 |
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*/ |
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#pragma once |
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#include <thread> |
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#include <list> |
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#include <atomic> |
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#include <libethential/Common.h> |
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#include <libethcore/CommonEth.h> |
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#include <libethcore/Dagger.h> |
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#include <libethcore/OverlayDB.h> |
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#include "State.h" |
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namespace eth |
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{ |
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class BlockChain; |
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class Client; |
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struct MineProgress |
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{ |
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double requirement; |
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double best; |
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double current; |
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uint hashes; |
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uint ms; |
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}; |
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class MinerHost |
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{ |
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public: |
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virtual void setupState(State& _s) = 0; ///< Reset the given State object to the one that should be being mined.
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virtual void onComplete(State& _s) = 0; ///< Completed the mine!
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virtual bool turbo() const = 0; |
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virtual bool force() const = 0; |
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}; |
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/**
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* @brief Implements Miner. |
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* The miner will start a thread when there is work provided by @fn restart(). |
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* The _progressCb callback is called every ~100ms or when a block is found. |
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* @fn completeMine() is to be called once a block is found. |
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* If miner is not restarted from _progressCb the thread will terminate. |
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* @threadsafe |
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* @todo signal from child->parent thread to wait on exit; refactor redundant dagger/miner stats |
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*/ |
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class Miner |
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{ |
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public: |
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/// Constructor. Starts miner.
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Miner(MinerHost* _host, unsigned _id = 0); |
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/// Destructor. Stops miner.
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~Miner() { stop(); } |
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/// Start mining.
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void start(); |
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/// Stop mining.
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void stop(); |
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/// Restart mining.
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void restart() { m_miningStatus = Preparing; } |
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/// @returns if mining
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bool isRunning() { return !!m_work; } |
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/// @returns true if mining is complete.
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bool isComplete() const { return m_miningStatus == Mined; } |
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/// @returns the internal State object.
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State& state() { return m_mineState; } |
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/// Check the progress of the mining.
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MineProgress miningProgress() const { Guard l(x_mineInfo); return m_mineProgress; } |
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/// Get and clear the mining history.
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std::list<MineInfo> miningHistory() { Guard l(x_mineInfo); auto ret = m_mineHistory; m_mineHistory.clear(); return ret; } |
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private: |
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/// Do some work on the mining.
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void work(); |
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MinerHost* m_host; ///< Our host.
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unsigned m_id; ///< Our identity;
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std::mutex x_work; ///< Mutex protecting the creation of the work thread.
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std::unique_ptr<std::thread> m_work; ///< The work thread.
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bool m_stop = false; ///< Stop working?
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enum MiningStatus { Preparing, Mining, Mined }; |
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MiningStatus m_miningStatus = Preparing;///< TODO: consider mutex/atomic variable.
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State m_mineState; ///< The state on which we are mining, generally equivalent to m_postMine.
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mutable unsigned m_pendingCount = 0; ///< How many pending transactions are there in m_mineState?
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mutable std::mutex x_mineInfo; ///< Lock for the mining progress & history.
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MineProgress m_mineProgress; ///< What's our progress?
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std::list<MineInfo> m_mineHistory; ///< What the history of our mining?
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}; |
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} |
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