45 lines
1.4 KiB
C++
45 lines
1.4 KiB
C++
/*
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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 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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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 <folly/futures/Future.h>
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#include <folly/io/async/EventBase.h>
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#include <folly/io/async/HHWheelTimer.h>
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#include <thread>
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namespace folly {
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/// The default Timekeeper implementation which uses a HHWheelTimer on an
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/// EventBase in a dedicated thread. Users needn't deal with this directly, it
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/// is used by default by Future methods that work with timeouts.
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class ThreadWheelTimekeeper : public Timekeeper {
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public:
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/// But it doesn't *have* to be a singleton.
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ThreadWheelTimekeeper();
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~ThreadWheelTimekeeper() override;
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/// Implement the Timekeeper interface
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SemiFuture<Unit> after(HighResDuration) override;
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protected:
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folly::EventBase eventBase_;
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std::thread thread_;
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HHWheelTimer::UniquePtr wheelTimer_;
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};
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} // namespace folly
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