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76 lines
2.4 KiB
76 lines
2.4 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 CanonBlockChain.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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#pragma once
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#pragma warning(push)
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#pragma warning(disable: 4100 4267)
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#include <leveldb/db.h>
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#pragma warning(pop)
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#include <mutex>
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#include <libdevcore/Log.h>
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#include <libdevcore/Exceptions.h>
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#include <libethcore/Common.h>
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#include <libethcore/BlockInfo.h>
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#include <libdevcore/Guards.h>
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#include "BlockDetails.h"
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#include "Account.h"
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#include "BlockQueue.h"
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#include "BlockChain.h"
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namespace ldb = leveldb;
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namespace dev
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{
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namespace eth
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{
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// TODO: Move all this Genesis stuff into Genesis.h/.cpp
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std::unordered_map<Address, Account> const& genesisState();
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/**
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* @brief Implements the blockchain database. All data this gives is disk-backed.
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* @threadsafe
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* @todo Make not memory hog (should actually act as a cache and deallocate old entries).
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*/
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class CanonBlockChain: public BlockChain
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{
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public:
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CanonBlockChain(WithExisting _we = WithExisting::Trust, ProgressCallback const& _pc = ProgressCallback()): CanonBlockChain(std::string(), _we, _pc) {}
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CanonBlockChain(std::string const& _path, WithExisting _we = WithExisting::Trust, ProgressCallback const& _pc = ProgressCallback());
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~CanonBlockChain() {}
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/// @returns the genesis block header.
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static BlockInfo const& genesis() { UpgradableGuard l(x_genesis); if (!s_genesis) { auto gb = createGenesisBlock(); UpgradeGuard ul(l); s_genesis.reset(new BlockInfo); s_genesis->populate(&gb); } return *s_genesis; }
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/// @returns the genesis block as its RLP-encoded byte array.
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/// @note This is slow as it's constructed anew each call. Consider genesis() instead.
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static bytes createGenesisBlock();
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private:
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/// Static genesis info and its lock.
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static boost::shared_mutex x_genesis;
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static std::unique_ptr<BlockInfo> s_genesis;
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};
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}
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}
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