Method TryToFreeAsyncMemory

util/thread/lfqueue.h:72–95

    alignas(64) std::atomic<TRootNode*> FreePtr;

    void TryToFreeAsyncMemory() {
        const auto keepCounter = FreeingTaskCounter.load();
        TRootNode* current = FreePtr.load(std::memory_order_acquire);
        if (current == nullptr) {
            return;
        }
        if (FreememCounter.load() == 1) {
            // we are the last thread, try to cleanup
            // check if another thread have cleaned up
            if (keepCounter != FreeingTaskCounter.load()) {
                return;
            }
            if (FreePtr.compare_exchange_strong(current, nullptr)) {
                // free list
                while (current) {
                    TRootNode* p = current->NextFree.load(std::memory_order_acquire);
                    EraseList(current->ToDelete.load(std::memory_order_acquire));
                    delete current;
                    current = p;
                }
                ++FreeingTaskCounter;
            }
        }
    }
    void AsyncRef() {
        ++FreememCounter;
    }