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/*
* Copyright (C) 2018 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.
*/
#ifndef POWER_LIBPERFMGR_INTERACTIONHANDLER_H_
#define POWER_LIBPERFMGR_INTERACTIONHANDLER_H_
#include <condition_variable>
#include <memory>
#include <mutex>
#include <string>
#include <thread>
#include <perfmgr/HintManager.h>
using ::android::perfmgr::HintManager;
enum interaction_state {
INTERACTION_STATE_UNINITIALIZED,
INTERACTION_STATE_IDLE,
INTERACTION_STATE_INTERACTION,
INTERACTION_STATE_WAITING,
};
class InteractionHandler {
public:
InteractionHandler(std::shared_ptr<HintManager> const &hint_manager);
~InteractionHandler();
bool Init();
void Exit();
void Acquire(int32_t duration);
private:
void Release();
void WaitForIdle(int32_t wait_ms, int32_t timeout_ms);
void AbortWaitLocked();
void Routine();
void PerfLock();
void PerfRel();
size_t CalcTimespecDiffMs(struct timespec start, struct timespec end);
enum interaction_state mState;
int mIdleFd;
int mEventFd;
int32_t mWaitMs;
int32_t mMinDurationMs;
int32_t mMaxDurationMs;
int32_t mDurationMs;
struct timespec mLastTimespec;
std::unique_ptr<std::thread> mThread;
std::mutex mLock;
std::condition_variable mCond;
std::shared_ptr<HintManager> mHintManager;
};
#endif // POWER_LIBPERFMGR_INTERACTIONHANDLER_H_