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61 lines
1.7 KiB
61 lines
1.7 KiB
/*
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* Copyright 2019 The Android Open Source Project
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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 <functional>
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#include <memory>
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#include <mutex>
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#include "common/callback.h"
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#include "os/handler.h"
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#include "os/thread.h"
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#include "os/utils.h"
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namespace bluetooth {
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namespace os {
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// A repeating alarm for reactor-based thread, implemented by Linux timerfd.
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// When it's constructed, it will register a reactable on the specified thread; when it's destroyed, it will unregister
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// itself from the thread.
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class RepeatingAlarm {
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public:
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// Create and register a repeating alarm on a given handler
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explicit RepeatingAlarm(Handler* handler);
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// Unregister this alarm from the thread and release resource
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~RepeatingAlarm();
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DISALLOW_COPY_AND_ASSIGN(RepeatingAlarm);
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// Schedule a repeating alarm with given period
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void Schedule(common::Closure task, std::chrono::milliseconds period);
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// Cancel the alarm. No-op if it's not armed.
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void Cancel();
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private:
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common::Closure task_;
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Handler* handler_;
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int fd_ = 0;
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Reactor::Reactable* token_;
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mutable std::mutex mutex_;
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void on_fire();
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};
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} // namespace os
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} // namespace bluetooth
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