Method AddDependency

src/txgraph.cpp:2281–2303

}

void TxGraphImpl::AddDependency(const Ref& parent, const Ref& child) noexcept
{
    // Don't do anything if either Ref is empty (which may be indicative of it having already been
    // removed).
    if (GetRefGraph(parent) == nullptr || GetRefGraph(child) == nullptr) return;
    Assume(GetRefGraph(parent) == this && GetRefGraph(child) == this);
    Assume(m_main_chunkindex_observers == 0 || GetTopLevel() != 0);
    // Don't do anything if this is a dependency on self.
    if (GetRefIndex(parent) == GetRefIndex(child)) return;
    // Find the Cluster the parent and child transaction are in, and stop if either appears to be
    // already removed.
    int level = GetTopLevel();
    auto par_cluster = FindCluster(GetRefIndex(parent), level);
    if (par_cluster == nullptr) return;
    auto chl_cluster = FindCluster(GetRefIndex(child), level);
    if (chl_cluster == nullptr) return;
    // Remember that this dependency is to be applied.
    auto& clusterset = GetClusterSet(level);
    clusterset.m_deps_to_add.emplace_back(GetRefIndex(parent), GetRefIndex(child));
    // Wipe m_group_data (as it will need to be recomputed).
    clusterset.m_group_data.reset();
    if (clusterset.m_oversized == false) clusterset.m_oversized = std::nullopt;
}

bool TxGraphImpl::Exists(const Ref& arg, Level level_select) noexcept
{