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