folly/folly/TimeoutQueue.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.
 */

/**
 * Simple timeout queue.  Call user-specified callbacks when their timeouts
 * expire.
 *
 * This class assumes that "time" is an int64_t and doesn't care about time
 * units (seconds, milliseconds, etc).  You call runOnce() / runLoop() using
 * the same time units that you use to specify callbacks.
 */

#pragma once

#include <cstdint>
#include <functional>

#include <boost/multi_index/indexed_by.hpp>
#include <boost/multi_index/member.hpp>
#include <boost/multi_index/ordered_index.hpp>
#include <boost/multi_index_container.hpp>

namespace folly {

class TimeoutQueue { … };

} // namespace folly