tx_verify.h File Reference

#include <consensus/amount.h>
#include <stdint.h>
#include <vector>

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Namespaces
namespace	Consensus
	Transaction validation functions.

Functions
bool	Consensus::CheckTxInputs (const CTransaction &tx, TxValidationState &state, const CCoinsViewCache &inputs, int nSpendHeight, CAmount &txfee)
	Check whether all inputs of this transaction are valid (no double spends and amounts) This does not modify the UTXO set. More...
unsigned int	GetLegacySigOpCount (const CTransaction &tx)
	Auxiliary functions for transaction validation (ideally should not be exposed) More...
unsigned int	GetP2SHSigOpCount (const CTransaction &tx, const CCoinsViewCache &mapInputs)
	Count ECDSA signature operations in pay-to-script-hash inputs. More...
int64_t	GetTransactionSigOpCost (const CTransaction &tx, const CCoinsViewCache &inputs, uint32_t flags)
	Compute total signature operation cost of a transaction. More...
bool	IsFinalTx (const CTransaction &tx, int nBlockHeight, int64_t nBlockTime)
	Check if transaction is final and can be included in a block with the specified height and time. More...
std::pair< int, int64_t >	CalculateSequenceLocks (const CTransaction &tx, int flags, std::vector< int > &prevHeights, const CBlockIndex &block)
	Calculates the block height and previous block's median time past at which the transaction will be considered final in the context of BIP 68. More...
bool	EvaluateSequenceLocks (const CBlockIndex &block, std::pair< int, int64_t > lockPair)
bool	SequenceLocks (const CTransaction &tx, int flags, std::vector< int > &prevHeights, const CBlockIndex &block)
	Check if transaction is final per BIP 68 sequence numbers and can be included in a block. More...

Function Documentation

CalculateSequenceLocks()

std::pair< int, int64_t > CalculateSequenceLocks	(	const CTransaction &	tx,
		int	flags,
		std::vector< int > &	prevHeights,
		const CBlockIndex &	block
	)

Calculates the block height and previous block's median time past at which the transaction will be considered final in the context of BIP 68.

For each input that is not sequence locked, the corresponding entries in prevHeights are set to 0 as they do not affect the calculation.

Definition at line 39 of file tx_verify.cpp.

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EvaluateSequenceLocks()

bool EvaluateSequenceLocks	(	const CBlockIndex &	block,
		std::pair< int, int64_t >	lockPair
	)

Definition at line 97 of file tx_verify.cpp.

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GetLegacySigOpCount()

unsigned int GetLegacySigOpCount

(

const CTransaction &

tx

)

Auxiliary functions for transaction validation (ideally should not be exposed)

Count ECDSA signature operations the old-fashioned (pre-0.6) way

Returns

number of sigops this transaction's outputs will produce when spent

See also

CTransaction::FetchInputs

Definition at line 112 of file tx_verify.cpp.

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GetP2SHSigOpCount()

unsigned int GetP2SHSigOpCount	(	const CTransaction &	tx,
		const CCoinsViewCache &	mapInputs
	)

Count ECDSA signature operations in pay-to-script-hash inputs.

Parameters

[in]

mapInputs

Map of previous transactions that have outputs we're spending

Returns

maximum number of sigops required to validate this transaction's inputs

See also

CTransaction::FetchInputs

Definition at line 126 of file tx_verify.cpp.

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GetTransactionSigOpCost()

int64_t GetTransactionSigOpCost	(	const CTransaction &	tx,
		const CCoinsViewCache &	inputs,
		uint32_t	flags
	)

Compute total signature operation cost of a transaction.

Parameters

[in]	tx	Transaction for which we are computing the cost
[in]	inputs	Map of previous transactions that have outputs we're spending
[in]	flags	Script verification flags

Returns

Total signature operation cost of tx

Definition at line 143 of file tx_verify.cpp.

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IsFinalTx()

bool IsFinalTx	(	const CTransaction &	tx,
		int	nBlockHeight,
		int64_t	nBlockTime
	)

Check if transaction is final and can be included in a block with the specified height and time.

Consensus critical.

Definition at line 17 of file tx_verify.cpp.

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SequenceLocks()

bool SequenceLocks	(	const CTransaction &	tx,
		int	flags,
		std::vector< int > &	prevHeights,
		const CBlockIndex &	block
	)

Check if transaction is final per BIP 68 sequence numbers and can be included in a block.

Consensus critical. Takes as input a list of heights at which tx's inputs (in order) confirmed.

Definition at line 107 of file tx_verify.cpp.

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