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/*
* Copyright (C) 2013 The Android Open Source Project
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* 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 <condition_variable>
#include <cstddef>
#include <functional>
#include <mutex>
#include <thread>
#include <android-base/thread_annotations.h>
namespace android {
class EventControlThread {
public:
virtual ~EventControlThread();
virtual void setVsyncEnabled(bool enabled) = 0;
};
namespace impl {
class EventControlThread final : public android::EventControlThread {
public:
using SetVSyncEnabledFunction = std::function<void(bool)>;
explicit EventControlThread(SetVSyncEnabledFunction function);
~EventControlThread();
// EventControlThread implementation
void setVsyncEnabled(bool enabled) override;
private:
void threadMain();
std::mutex mMutex;
std::condition_variable mCondition;
const SetVSyncEnabledFunction mSetVSyncEnabled;
bool mVsyncEnabled GUARDED_BY(mMutex) = false;
bool mKeepRunning GUARDED_BY(mMutex) = true;
// Must be last so that everything is initialized before the thread starts.
std::thread mThread{&EventControlThread::threadMain, this};
};
} // namespace impl
} // namespace android
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