90 lines
2.6 KiB
C++
90 lines
2.6 KiB
C++
// Copyright (c) 2009-2010 Satoshi Nakamoto
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// Copyright (c) 2009-2015 The Bitcoin Core developers
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// Distributed under the MIT software license, see the accompanying
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// file COPYING or http://www.opensource.org/licenses/mit-license.php.
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#ifndef BITCOIN_MINER_H
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#define BITCOIN_MINER_H
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#include "primitives/block.h"
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#include "txmempool.h"
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#include <stdint.h>
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#include <memory>
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class CBlockIndex;
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class CChainParams;
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class CReserveKey;
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class CScript;
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class CWallet;
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namespace Consensus { struct Params; };
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static const bool DEFAULT_PRINTPRIORITY = false;
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struct CBlockTemplate
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{
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CBlock block;
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std::vector<CAmount> vTxFees;
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std::vector<int64_t> vTxSigOps;
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};
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/** Generate a new block, without valid proof-of-work */
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class BlockAssembler
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{
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private:
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// The constructed block template
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std::unique_ptr<CBlockTemplate> pblocktemplate;
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// A convenience pointer that always refers to the CBlock in pblocktemplate
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CBlock* pblock;
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// Configuration parameters for the block size
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unsigned int nBlockMaxSize, nBlockMinSize;
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// Information on the current status of the block
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uint64_t nBlockSize;
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uint64_t nBlockTx;
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unsigned int nBlockSigOps;
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CAmount nFees;
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CTxMemPool::setEntries inBlock;
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// Chain context for the block
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int nHeight;
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int64_t nLockTimeCutoff;
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const CChainParams& chainparams;
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// Variables used for addScoreTxs and addPriorityTxs
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int lastFewTxs;
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bool blockFinished;
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public:
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BlockAssembler(const CChainParams& chainparams);
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/** Construct a new block template with coinbase to scriptPubKeyIn */
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CBlockTemplate* CreateNewBlock(const CScript& scriptPubKeyIn);
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private:
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// utility functions
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/** Clear the block's state and prepare for assembling a new block */
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void resetBlock();
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/** Add a tx to the block */
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void AddToBlock(CTxMemPool::txiter iter);
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// Methods for how to add transactions to a block.
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/** Add transactions based on modified feerate */
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void addScoreTxs();
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/** Add transactions based on tx "priority" */
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void addPriorityTxs();
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// helper function for addScoreTxs and addPriorityTxs
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/** Test if tx will still "fit" in the block */
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bool TestForBlock(CTxMemPool::txiter iter);
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/** Test if tx still has unconfirmed parents not yet in block */
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bool isStillDependent(CTxMemPool::txiter iter);
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};
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/** Modify the extranonce in a block */
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void IncrementExtraNonce(CBlock* pblock, const CBlockIndex* pindexPrev, unsigned int& nExtraNonce);
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int64_t UpdateTime(CBlockHeader* pblock, const Consensus::Params& consensusParams, const CBlockIndex* pindexPrev);
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#endif // BITCOIN_MINER_H
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