Method GetStateStatisticsFor

src/versionbits.cpp:113–140

return the numerical statistics of blocks signalling the specified BIP9 condition in this current period

// return the numerical statistics of blocks signalling the specified BIP9 condition in this current period
BIP9Stats AbstractThresholdConditionChecker::GetStateStatisticsFor(const CBlockIndex* pindex, const Consensus::Params& params) const
{
    BIP9Stats stats = {};

    stats.period = Period(params);
    stats.threshold = Threshold(params);

    if (pindex == nullptr)
        return stats;

    // Find beginning of period
    const CBlockIndex* pindexEndOfPrevPeriod = pindex->GetAncestor(pindex->nHeight - ((pindex->nHeight + 1) % stats.period));
    stats.elapsed = pindex->nHeight - pindexEndOfPrevPeriod->nHeight;

    // Count from current block to beginning of period
    int count = 0;
    const CBlockIndex* currentIndex = pindex;
    while (pindexEndOfPrevPeriod->nHeight != currentIndex->nHeight){
        if (Condition(currentIndex, params))
            count++;
        currentIndex = currentIndex->pprev;
    }

    stats.count = count;
    stats.possible = (stats.period - stats.threshold ) >= (stats.elapsed - count);

    return stats;
}

int AbstractThresholdConditionChecker::GetStateSinceHeightFor(const CBlockIndex* pindexPrev, const Consensus::Params& params, ThresholdConditionCache& cache) const
{