56 lines
1.9 KiB
C++
56 lines
1.9 KiB
C++
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/*
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* Copyright (c) Facebook, Inc. and its affiliates.
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*
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* Licensed under the Apache License Version 2.0 with LLVM Exceptions
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* (the "License"); you may not use this file except in compliance with
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* the License. You may obtain a copy of the License at
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*
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* https://llvm.org/LICENSE.txt
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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#pragma once
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#include <unifex/config.hpp>
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#include <unifex/adapt_stream.hpp>
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#include <unifex/scheduler_concepts.hpp>
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#include <unifex/finally.hpp>
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#include <unifex/bind_back.hpp>
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#include <type_traits>
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#include <unifex/detail/prologue.hpp>
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namespace unifex
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{
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namespace _delay {
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inline const struct _fn {
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template <typename Stream, typename Scheduler, typename Duration>
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auto operator()(Stream&& stream, Scheduler&& scheduler, Duration&& duration) const {
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return adapt_stream(
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(Stream &&) stream,
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[scheduler = (Scheduler &&) scheduler,
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duration = (Duration &&) duration](auto&& sender) {
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return finally(
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static_cast<decltype(sender)>(sender),
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schedule_after(scheduler, duration));
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});
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}
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template <typename Scheduler, typename Duration>
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constexpr auto operator()(Scheduler&& scheduler, Duration&& duration) const
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noexcept(is_nothrow_callable_v<
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tag_t<bind_back>, _fn, Scheduler, Duration>)
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-> bind_back_result_t<_fn, Scheduler, Duration> {
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return bind_back(*this, (Scheduler&&)scheduler, (Duration&&)duration);
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}
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} delay{};
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} // namespace _delay
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using _delay::delay;
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} // namespace unifex
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#include <unifex/detail/epilogue.hpp>
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