2 * Copyright 2017-present Facebook, Inc.
4 * Licensed under the Apache License, Version 2.0 (the "License");
5 * you may not use this file except in compliance with the License.
6 * You may obtain a copy of the License at
8 * http://www.apache.org/licenses/LICENSE-2.0
10 * Unless required by applicable law or agreed to in writing, software
11 * distributed under the License is distributed on an "AS IS" BASIS,
12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
13 * See the License for the specific language governing permissions and
14 * limitations under the License.
19 #include <folly/concurrency/UnboundedQueue.h>
20 #include <folly/executors/task_queue/BlockingQueue.h>
21 #include <folly/synchronization/LifoSem.h>
26 class UnboundedBlockingQueue : public BlockingQueue<T> {
28 virtual ~UnboundedBlockingQueue() {}
30 void add(T item) override {
31 queue_.enqueue(std::move(item));
37 while (!queue_.try_dequeue(item)) {
43 size_t size() override {
49 UMPMCQueue<T, false> queue_;