Bitcoin Core  0.15.99
P2P Digital Currency
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BlockAssembler Class Reference

Generate a new block, without valid proof-of-work. More...

#include <miner.h>

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Classes

struct  Options
 

Public Member Functions

 BlockAssembler (const CChainParams &params)
 
 BlockAssembler (const CChainParams &params, const Options &options)
 
std::unique_ptr< CBlockTemplateCreateNewBlock (const CScript &scriptPubKeyIn, bool fMineWitnessTx=true)
 Construct a new block template with coinbase to scriptPubKeyIn. More...
 

Private Member Functions

void resetBlock ()
 Clear the block's state and prepare for assembling a new block. More...
 
void AddToBlock (CTxMemPool::txiter iter)
 Add a tx to the block. More...
 
void addPackageTxs (int &nPackagesSelected, int &nDescendantsUpdated)
 Add transactions based on feerate including unconfirmed ancestors Increments nPackagesSelected / nDescendantsUpdated with corresponding statistics from the package selection (for logging statistics). More...
 
void onlyUnconfirmed (CTxMemPool::setEntries &testSet)
 Remove confirmed (inBlock) entries from given set. More...
 
bool TestPackage (uint64_t packageSize, int64_t packageSigOpsCost) const
 Test if a new package would "fit" in the block. More...
 
bool TestPackageTransactions (const CTxMemPool::setEntries &package)
 Perform checks on each transaction in a package: locktime, premature-witness, serialized size (if necessary) These checks should always succeed, and they're here only as an extra check in case of suboptimal node configuration. More...
 
bool SkipMapTxEntry (CTxMemPool::txiter it, indexed_modified_transaction_set &mapModifiedTx, CTxMemPool::setEntries &failedTx)
 Return true if given transaction from mapTx has already been evaluated, or if the transaction's cached data in mapTx is incorrect. More...
 
void SortForBlock (const CTxMemPool::setEntries &package, CTxMemPool::txiter entry, std::vector< CTxMemPool::txiter > &sortedEntries)
 Sort the package in an order that is valid to appear in a block. More...
 
int UpdatePackagesForAdded (const CTxMemPool::setEntries &alreadyAdded, indexed_modified_transaction_set &mapModifiedTx)
 Add descendants of given transactions to mapModifiedTx with ancestor state updated assuming given transactions are inBlock. More...
 

Private Attributes

std::unique_ptr< CBlockTemplatepblocktemplate
 
CBlockpblock
 
bool fIncludeWitness
 
unsigned int nBlockMaxWeight
 
CFeeRate blockMinFeeRate
 
uint64_t nBlockWeight
 
uint64_t nBlockTx
 
uint64_t nBlockSigOpsCost
 
CAmount nFees
 
CTxMemPool::setEntries inBlock
 
int nHeight
 
int64_t nLockTimeCutoff
 
const CChainParamschainparams
 

Detailed Description

Generate a new block, without valid proof-of-work.

Definition at line 132 of file miner.h.

Constructor & Destructor Documentation

BlockAssembler::BlockAssembler ( const CChainParams params)
explicit

Definition at line 93 of file miner.cpp.

BlockAssembler::BlockAssembler ( const CChainParams params,
const Options options 
)

Definition at line 68 of file miner.cpp.

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Member Function Documentation

void BlockAssembler::addPackageTxs ( int &  nPackagesSelected,
int &  nDescendantsUpdated 
)
private

Add transactions based on feerate including unconfirmed ancestors Increments nPackagesSelected / nDescendantsUpdated with corresponding statistics from the package selection (for logging statistics).

Definition at line 313 of file miner.cpp.

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void BlockAssembler::AddToBlock ( CTxMemPool::txiter  iter)
private

Add a tx to the block.

Definition at line 231 of file miner.cpp.

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std::unique_ptr< CBlockTemplate > BlockAssembler::CreateNewBlock ( const CScript scriptPubKeyIn,
bool  fMineWitnessTx = true 
)

Construct a new block template with coinbase to scriptPubKeyIn.

Definition at line 109 of file miner.cpp.

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void BlockAssembler::onlyUnconfirmed ( CTxMemPool::setEntries testSet)
private

Remove confirmed (inBlock) entries from given set.

Definition at line 193 of file miner.cpp.

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void BlockAssembler::resetBlock ( )
private

Clear the block's state and prepare for assembling a new block.

Definition at line 95 of file miner.cpp.

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bool BlockAssembler::SkipMapTxEntry ( CTxMemPool::txiter  it,
indexed_modified_transaction_set mapModifiedTx,
CTxMemPool::setEntries failedTx 
)
private

Return true if given transaction from mapTx has already been evaluated, or if the transaction's cached data in mapTx is incorrect.

Definition at line 286 of file miner.cpp.

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void BlockAssembler::SortForBlock ( const CTxMemPool::setEntries package,
CTxMemPool::txiter  entry,
std::vector< CTxMemPool::txiter > &  sortedEntries 
)
private

Sort the package in an order that is valid to appear in a block.

Definition at line 292 of file miner.cpp.

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bool BlockAssembler::TestPackage ( uint64_t  packageSize,
int64_t  packageSigOpsCost 
) const
private

Test if a new package would "fit" in the block.

Definition at line 206 of file miner.cpp.

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bool BlockAssembler::TestPackageTransactions ( const CTxMemPool::setEntries package)
private

Perform checks on each transaction in a package: locktime, premature-witness, serialized size (if necessary) These checks should always succeed, and they're here only as an extra check in case of suboptimal node configuration.

Definition at line 220 of file miner.cpp.

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int BlockAssembler::UpdatePackagesForAdded ( const CTxMemPool::setEntries alreadyAdded,
indexed_modified_transaction_set mapModifiedTx 
)
private

Add descendants of given transactions to mapModifiedTx with ancestor state updated assuming given transactions are inBlock.

Returns number of updated descendants.

Definition at line 250 of file miner.cpp.

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Member Data Documentation

CFeeRate BlockAssembler::blockMinFeeRate
private

Definition at line 143 of file miner.h.

const CChainParams& BlockAssembler::chainparams
private

Definition at line 155 of file miner.h.

bool BlockAssembler::fIncludeWitness
private

Definition at line 141 of file miner.h.

CTxMemPool::setEntries BlockAssembler::inBlock
private

Definition at line 150 of file miner.h.

unsigned int BlockAssembler::nBlockMaxWeight
private

Definition at line 142 of file miner.h.

uint64_t BlockAssembler::nBlockSigOpsCost
private

Definition at line 148 of file miner.h.

uint64_t BlockAssembler::nBlockTx
private

Definition at line 147 of file miner.h.

uint64_t BlockAssembler::nBlockWeight
private

Definition at line 146 of file miner.h.

CAmount BlockAssembler::nFees
private

Definition at line 149 of file miner.h.

int BlockAssembler::nHeight
private

Definition at line 153 of file miner.h.

int64_t BlockAssembler::nLockTimeCutoff
private

Definition at line 154 of file miner.h.

CBlock* BlockAssembler::pblock
private

Definition at line 138 of file miner.h.

std::unique_ptr<CBlockTemplate> BlockAssembler::pblocktemplate
private

Definition at line 136 of file miner.h.


The documentation for this class was generated from the following files: