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/*
This file is part of cpp-ethereum.
cpp-ethereum is free software: you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation, either version 3 of the License, or
(at your option) any later version.
cpp-ethereum is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
You should have received a copy of the GNU General Public License
along with cpp-ethereum. If not, see <http://www.gnu.org/licenses/>.
*/
/** @file CanonBlockChain.h
* @author Gav Wood <i@gavwood.com>
* @date 2014
*/
#pragma once
#pragma warning(push)
#pragma warning(disable: 4100 4267)
#include <leveldb/db.h>
#pragma warning(pop)
#include <mutex>
#include <libdevcore/Log.h>
#include <libdevcore/Exceptions.h>
#include <libethcore/Common.h>
#include <libethcore/BlockInfo.h>
#include <libdevcore/Guards.h>
#include "BlockDetails.h"
#include "Account.h"
#include "BlockQueue.h"
#include "BlockChain.h"
namespace ldb = leveldb;
namespace dev
{
namespace eth
{
// TODO: Move all this Genesis stuff into Genesis.h/.cpp
std::map<Address, Account> const& genesisState();
/**
* @brief Implements the blockchain database. All data this gives is disk-backed.
* @threadsafe
* @todo Make not memory hog (should actually act as a cache and deallocate old entries).
*/
class CanonBlockChain: public BlockChain
{
public:
CanonBlockChain(bool _killExisting = false): CanonBlockChain(std::string(), _killExisting) {}
CanonBlockChain(std::string _path, bool _killExisting = false);
~CanonBlockChain() {}
/// @returns the genesis block header.
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; }
/// @returns the genesis block as its RLP-encoded byte array.
/// @note This is slow as it's constructed anew each call. Consider genesis() instead.
static bytes createGenesisBlock();
private:
/// Static genesis info and its lock.
static boost::shared_mutex x_genesis;
static std::unique_ptr<BlockInfo> s_genesis;
};
}
}