folly/folly/io/async/EventBaseAtomicNotificationQueue.h

/*
 * Copyright (c) Meta Platforms, Inc. and affiliates.
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *     http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */

#pragma once

#include <folly/io/async/AtomicNotificationQueue.h>
#include <folly/io/async/EventBase.h>
#include <folly/io/async/EventHandler.h>
#include <folly/portability/Fcntl.h>
#include <folly/portability/Sockets.h>
#include <folly/portability/Unistd.h>

#if __has_include(<sys/eventfd.h>)
#include <sys/eventfd.h>
#endif

namespace folly {

/**
 * A producer-consumer queue for passing tasks to EventBase thread.
 *
 * Tasks can be added to the queue from any thread. A single EventBase
 * thread can be listening to the queue. Tasks are processed in FIFO order.
 */
template <typename Task, typename Consumer>
class EventBaseAtomicNotificationQueue : private EventBase::LoopCallback,
                                         private EventHandler { … };

} // namespace folly

#include <folly/io/async/EventBaseAtomicNotificationQueue-inl.h>