mirror of
https://github.com/kidfromjupiter/nearby.git
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66 lines
2.3 KiB
C++
66 lines
2.3 KiB
C++
// Copyright 2020 Google LLC
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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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// https://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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#ifndef PLATFORM_IMPL_WINDOWS_SCHEDULED_EXECUTOR_H_
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#define PLATFORM_IMPL_WINDOWS_SCHEDULED_EXECUTOR_H_
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#include <windows.h>
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#include "internal/platform/implementation/scheduled_executor.h"
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#include "internal/platform/implementation/windows/executor.h"
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namespace location {
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namespace nearby {
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namespace windows {
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#define TIMER_NAME_BUFFER_SIZE 64
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// An Executor that can schedule commands to run after a given delay, or to
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// execute periodically.
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//
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// https://docs.oracle.com/javase/8/docs/api/java/util/concurrent/ScheduledExecutorService.html
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class ScheduledExecutor : public api::ScheduledExecutor {
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public:
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ScheduledExecutor();
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~ScheduledExecutor() override = default;
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// Cancelable is kept both in the executor context, and in the caller context.
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// We want Cancelable to live until both caller and executor are done with it.
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// Exclusive ownership model does not work for this case;
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// using std:shared_ptr<> instead if std::unique_ptr<>.
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std::shared_ptr<api::Cancelable> Schedule(Runnable&& runnable,
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absl::Duration duration) override;
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// https://docs.oracle.com/javase/8/docs/api/java/util/concurrent/Executor.html#execute-java.lang.Runnable-
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void Execute(Runnable&& runnable) override;
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// https://docs.oracle.com/javase/8/docs/api/java/util/concurrent/ExecutorService.html#shutdown--
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void Shutdown() override;
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private:
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static void WINAPI _TimerProc(LPVOID lpArgToCompletionRoutine,
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DWORD dwTimerLowValue, DWORD dwTimerHighValue);
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std::unique_ptr<nearby::windows::Executor> executor_;
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std::vector<HANDLE> waitable_timers_;
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std::atomic_bool shut_down_;
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};
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} // namespace windows
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} // namespace nearby
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} // namespace location
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#endif // PLATFORM_IMPL_WINDOWS_SCHEDULED_EXECUTOR_H_
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