Method CalculateAncestorsAndCheckLimits

src/txmempool.cpp:236–283

}

bool CTxMemPool::CalculateAncestorsAndCheckLimits(size_t entry_size,
                                                  size_t entry_count,
                                                  setEntries& setAncestors,
                                                  CTxMemPoolEntry::Parents& staged_ancestors,
                                                  uint64_t limitAncestorCount,
                                                  uint64_t limitAncestorSize,
                                                  uint64_t limitDescendantCount,
                                                  uint64_t limitDescendantSize,
                                                  std::string &errString) const
{
    size_t totalSizeWithAncestors = entry_size;

    while (!staged_ancestors.empty()) {
        const CTxMemPoolEntry& stage = staged_ancestors.begin()->get();
        txiter stageit = mapTx.iterator_to(stage);

        setAncestors.insert(stageit);
        staged_ancestors.erase(stage);
        totalSizeWithAncestors += stageit->GetTxSize();

        if (stageit->GetSizeWithDescendants() + entry_size > limitDescendantSize) {
            errString = strprintf("exceeds descendant size limit for tx %s [limit: %u]", stageit->GetTx().GetHash().ToString(), limitDescendantSize);
            return false;
        } else if (stageit->GetCountWithDescendants() + entry_count > limitDescendantCount) {
            errString = strprintf("too many descendants for tx %s [limit: %u]", stageit->GetTx().GetHash().ToString(), limitDescendantCount);
            return false;
        } else if (totalSizeWithAncestors > limitAncestorSize) {
            errString = strprintf("exceeds ancestor size limit [limit: %u]", limitAncestorSize);
            return false;
        }

        const CTxMemPoolEntry::Parents& parents = stageit->GetMemPoolParentsConst();
        for (const CTxMemPoolEntry& parent : parents) {
            txiter parent_it = mapTx.iterator_to(parent);

            // If this is a new ancestor, add it.
            if (setAncestors.count(parent_it) == 0) {
                staged_ancestors.insert(parent);
            }
            if (staged_ancestors.size() + setAncestors.size() + entry_count > limitAncestorCount) {
                errString = strprintf("too many unconfirmed ancestors [limit: %u]", limitAncestorCount);
                return false;
            }
        }
    }

    return true;
}

bool CTxMemPool::CheckPackageLimits(const Package& package,
                                    uint64_t limitAncestorCount,