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delay.hpp
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delay.hpp
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/*
* Copyright (c) Facebook, Inc. and its affiliates.
*
* Licensed under the Apache License Version 2.0 with LLVM Exceptions
* (the "License"); you may not use this file except in compliance with
* the License. You may obtain a copy of the License at
*
* https://llvm.org/LICENSE.txt
*
* 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 <unifex/config.hpp>
#include <unifex/adapt_stream.hpp>
#include <unifex/bind_back.hpp>
#include <unifex/finally.hpp>
#include <unifex/scheduler_concepts.hpp>
#include <type_traits>
#include <unifex/detail/prologue.hpp>
namespace unifex {
namespace _delay {
inline const struct _fn {
template <typename Stream, typename Scheduler, typename Duration>
auto operator()(
Stream&& stream, Scheduler&& scheduler, Duration&& duration) const {
return adapt_stream(
(Stream &&) stream,
[scheduler = (Scheduler &&) scheduler,
duration = (Duration &&) duration](auto&& sender) {
return finally(
static_cast<decltype(sender)>(sender),
schedule_after(scheduler, duration));
});
}
template <typename Scheduler, typename Duration>
constexpr auto operator()(Scheduler&& scheduler, Duration&& duration) const
noexcept(
std::is_nothrow_invocable_v<tag_t<bind_back>, _fn, Scheduler, Duration>)
-> bind_back_result_t<_fn, Scheduler, Duration> {
return bind_back(*this, (Scheduler &&) scheduler, (Duration &&) duration);
}
} delay{};
} // namespace _delay
using _delay::delay;
} // namespace unifex
#include <unifex/detail/epilogue.hpp>