Function CheckFinalTx

src/validation.cpp:187–218

                       EXCLUSIVE_LOCKS_REQUIRED(cs_main);

bool CheckFinalTx(const CBlockIndex* active_chain_tip, const CTransaction &tx, int flags)
{
    AssertLockHeld(cs_main);
    assert(active_chain_tip); // TODO: Make active_chain_tip a reference

    // By convention a negative value for flags indicates that the
    // current network-enforced consensus rules should be used. In
    // a future soft-fork scenario that would mean checking which
    // rules would be enforced for the next block and setting the
    // appropriate flags. At the present time no soft-forks are
    // scheduled, so no flags are set.
    flags = std::max(flags, 0);

    // CheckFinalTx() uses active_chain_tip.Height()+1 to evaluate
    // nLockTime because when IsFinalTx() is called within
    // AcceptBlock(), the height of the block *being*
    // evaluated is what is used. Thus if we want to know if a
    // transaction can be part of the *next* block, we need to call
    // IsFinalTx() with one more than active_chain_tip.Height().
    const int nBlockHeight = active_chain_tip->nHeight + 1;

    // BIP113 requires that time-locked transactions have nLockTime set to
    // less than the median time of the previous block they're contained in.
    // When the next block is created its previous block will be the current
    // chain tip, so we use that to calculate the median time passed to
    // IsFinalTx() if LOCKTIME_MEDIAN_TIME_PAST is set.
    const int64_t nBlockTime = (flags & LOCKTIME_MEDIAN_TIME_PAST)
                             ? active_chain_tip->GetMedianTimePast()
                             : GetAdjustedTime();

    return IsFinalTx(tx, nBlockHeight, nBlockTime);
}

bool CheckSequenceLocks(CBlockIndex* tip,
                        const CCoinsView& coins_view,