Method ProcessNewBlock

src/validation.cpp:4160–4197

}

bool ChainstateManager::ProcessNewBlock(const CChainParams& chainparams, const std::shared_ptr<const CBlock>& block, bool force_processing, bool* new_block)
{
    AssertLockNotHeld(cs_main);

    {
        CBlockIndex *pindex = nullptr;
        if (new_block) *new_block = false;
        BlockValidationState state;

        // CheckBlock() does not support multi-threaded block validation because CBlock::fChecked can cause data race.
        // Therefore, the following critical section must include the CheckBlock() call as well.
        LOCK(cs_main);

        // Skipping AcceptBlock() for CheckBlock() failures means that we will never mark a block as invalid if
        // CheckBlock() fails.  This is protective against consensus failure if there are any unknown forms of block
        // malleability that cause CheckBlock() to fail; see e.g. CVE-2012-2459 and
        // https://lists.linuxfoundation.org/pipermail/bitcoin-dev/2019-February/016697.html.  Because CheckBlock() is
        // not very expensive, the anti-DoS benefits of caching failure (of a definitely-invalid block) are not substantial.
        bool ret = CheckBlock(*block, state, chainparams.GetConsensus());
        if (ret) {
            // Store to disk
            ret = ActiveChainstate().AcceptBlock(block, state, &pindex, force_processing, nullptr, new_block);
        }
        if (!ret) {
            GetMainSignals().BlockChecked(*block, state);
            return error("%s: AcceptBlock FAILED (%s)", __func__, state.ToString());
        }
    }

    NotifyHeaderTip(ActiveChainstate());

    BlockValidationState state; // Only used to report errors, not invalidity - ignore it
    if (!ActiveChainstate().ActivateBestChain(state, block)) {
        return error("%s: ActivateBestChain failed (%s)", __func__, state.ToString());
    }

    return true;
}

MempoolAcceptResult ChainstateManager::ProcessTransaction(const CTransactionRef& tx, bool test_accept)
{