AtomicNotification.h

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/*
 * Copyright 2004-present Facebook, Inc.
 *
 * 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 <atomic>
#include <condition_variable>

namespace folly {

//  mimic: std::atomic_wait, p1135r0
template <typename Integer>
void atomic_wait(const std::atomic<Integer>* atomic, Integer expected);
template <typename Integer, typename Clock, typename Duration>
std::cv_status atomic_wait_until(
    const std::atomic<Integer>* atomic,
    Integer expected,
    const std::chrono::time_point<Clock, Duration>& deadline);

//  mimic: std::atomic_notify_one, p1135r0
template <typename Integer>
void atomic_notify_one(const std::atomic<Integer>* atomic);
//  mimic: std::atomic_notify_all, p1135r0
template <typename Integer>
void atomic_notify_all(const std::atomic<Integer>* atomic);

//  mimic: std::atomic_uint_fast_wait_t, p1135r0
using atomic_uint_fast_wait_t = std::atomic<std::uint32_t>;

} // namespace folly

#include <folly/synchronization/AtomicNotification-inl.h>