1 /* 2 * Copyright (C) 2018 The Android Open Source Project 3 * 4 * Licensed under the Apache License, Version 2.0 (the "License"); 5 * you may not use this file except in compliance with the License. 6 * You may obtain a copy of the License at 7 * 8 * http://www.apache.org/licenses/LICENSE-2.0 9 * 10 * Unless required by applicable law or agreed to in writing, software 11 * distributed under the License is distributed on an "AS IS" BASIS, 12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 13 * See the License for the specific language governing permissions and 14 * limitations under the License. 15 */ 16 17 #ifndef INTERACTIONHANDLER_H 18 #define INTERACTIONHANDLER_H 19 20 #include <condition_variable> 21 #include <mutex> 22 #include <thread> 23 24 #include <perfmgr/HintManager.h> 25 26 using ::android::perfmgr::HintManager; 27 28 enum interaction_state { 29 INTERACTION_STATE_UNINITIALIZED, 30 INTERACTION_STATE_IDLE, 31 INTERACTION_STATE_INTERACTION, 32 INTERACTION_STATE_WAITING, 33 }; 34 35 struct InteractionHandler { 36 InteractionHandler(std::shared_ptr<HintManager> const & hint_manager); 37 ~InteractionHandler(); 38 bool Init(); 39 void Exit(); 40 void Acquire(int32_t duration); 41 42 private: 43 void Release(); 44 void WaitForIdle(int32_t wait_ms, int32_t timeout_ms); 45 void AbortWaitLocked(); 46 void Routine(); 47 48 void PerfLock(); 49 void PerfRel(); 50 51 long long CalcTimespecDiffMs(struct timespec start, struct timespec end); 52 53 enum interaction_state mState; 54 55 int mIdleFd; 56 int mEventFd; 57 58 int32_t mWaitMs; 59 int32_t mMinDurationMs; 60 int32_t mMaxDurationMs; 61 int32_t mDurationMs; 62 63 struct timespec mLastTimespec; 64 65 std::unique_ptr<std::thread> mThread; 66 std::mutex mLock; 67 std::condition_variable mCond; 68 std::shared_ptr<HintManager> mHintManager; 69 }; 70 71 #endif //INTERACTIONHANDLER_H 72