Bitcoin Core  0.18.99
P2P Digital Currency
Namespaces | Functions
tx_verify.h File Reference
#include <amount.h>
#include <stdint.h>
#include <vector>
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Namespaces

 Consensus
 Transaction validation functions.
 

Functions

bool Consensus::CheckTxInputs (const CTransaction &tx, CValidationState &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, int 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.

Also removes from the vector of input heights any entries which did not correspond to sequence locked inputs as they do not affect the calculation.

Definition at line 30 of file tx_verify.cpp.

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◆ EvaluateSequenceLocks()

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

Definition at line 92 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 107 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]mapInputsMap 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 121 of file tx_verify.cpp.

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◆ GetTransactionSigOpCost()

int64_t GetTransactionSigOpCost ( const CTransaction tx,
const CCoinsViewCache inputs,
int  flags 
)

Compute total signature operation cost of a transaction.

Parameters
[in]txTransaction for which we are computing the cost
[in]inputsMap of previous transactions that have outputs we're spending
[out]flagsScript verification flags
Returns
Total signature operation cost of tx

Definition at line 138 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 102 of file tx_verify.cpp.

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