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118 lines
3.0 KiB
118 lines
3.0 KiB
/*
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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 ProofOfWork.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/RLP.h>
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#include <libdevcrypto/Common.h>
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#include "Common.h"
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//#include "Ethash.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 BlockInfo;
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/**
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* The proof of work algorithm base type.
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*
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* Must implement a basic templated interface, including:
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* typename Result
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* typename Solution
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* typename CPUMiner
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* typename GPUMiner
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* and a few others. TODO
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*/
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class BasicAuthority
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{
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public:
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struct HeaderCache {};
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static void ensureHeaderCacheValid(HeaderCache&, BlockInfo const&) {}
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static void composeException(Exception&, BlockInfo&) {}
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static void composeExceptionPre(Exception&, BlockInfo&) {}
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struct Solution
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{
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bool operator==(Solution const& _v) const { return sig == _v.sig; }
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void populateFromRLP(RLP const& io_rlp, int& io_field)
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{
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sig = io_rlp[io_field++].toHash<dev::Signature>(RLP::VeryStrict);
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}
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void streamRLP(RLPStream& io_rlp) const
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{
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io_rlp << sig;
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}
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static const unsigned Fields = 1;
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Signature sig;
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};
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struct Result
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{
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Signature sig;
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};
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struct WorkPackage
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{
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void reset() { headerHash = h256(); }
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operator bool() const { return headerHash != h256(); }
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h256 headerHash; ///< When h256() means "pause until notified a new work package is available".
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};
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static const WorkPackage NullWorkPackage;
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static std::string name() { return "BasicAuthority"; }
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static unsigned revision() { return 0; }
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static void prep(BlockInfo const&, std::function<int(unsigned)> const& = std::function<int(unsigned)>()) {}
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static void ensurePrecomputed(unsigned) {}
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static bool verify(BlockInfo const& _header);
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static bool preVerify(BlockInfo const& _header);
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static WorkPackage package(BlockInfo const& _header);
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static const Address Authority;
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struct Farm
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{
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public:
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strings sealers() const { return { "default" }; }
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void setSealer(std::string const&) {}
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void setSecret(Secret const& _s) { m_secret = _s; }
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void sealBlock(BlockInfo const& _bi);
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void disable() {}
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void onSolutionFound(std::function<void(Solution const& s)> const& _f) { m_onSolutionFound = _f; }
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bool isMining() const { return false; }
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MiningProgress miningProgress() const { return MiningProgress(); }
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private:
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Secret m_secret;
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std::function<void(Solution const& s)> m_onSolutionFound;
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};
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};
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using ProofOfWork = BasicAuthority;
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}
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}
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