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https://github.com/Evolution-X-Devices/device_google_wahoo
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442a23d628
InteractionHandler calls undo_hint_action in a separate thread, where undo_hint_action manipulates a linklist which is not protected by any locking method. std::lock_guard<std::mutex> lk(mLock) protects insides InteractionHandler class, but the linklist is also used in other places of PowerHAL such as Encoder hint. Bug: 71383315 Test: Build Change-Id: I81e2c79ab78ed7bd13ddc663ddbe86fa08f29337
68 lines
1.6 KiB
C++
68 lines
1.6 KiB
C++
/*
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* Copyright (C) 2017 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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#ifndef INTERACTIONHANDLER_H
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#define INTERACTIONHANDLER_H
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#include <condition_variable>
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#include <mutex>
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#include <thread>
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enum interaction_state {
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INTERACTION_STATE_UNINITIALIZED,
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INTERACTION_STATE_IDLE,
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INTERACTION_STATE_INTERACTION,
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INTERACTION_STATE_WAITING,
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};
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struct InteractionHandler {
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InteractionHandler();
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~InteractionHandler();
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bool Init();
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void Exit();
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void Acquire(int32_t duration);
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private:
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void Release();
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void WaitForIdle(int32_t wait_ms, int32_t timeout_ms);
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void AbortWaitLocked();
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void Routine();
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void PerfLock();
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void PerfRel();
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long long CalcTimespecDiffMs(struct timespec start, struct timespec end);
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enum interaction_state mState;
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int mIdleFd;
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int mEventFd;
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int32_t mWaitMs;
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int32_t mMinDurationMs;
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int32_t mMaxDurationMs;
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int32_t mDurationMs;
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struct timespec mLastTimespec;
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std::unique_ptr<std::thread> mThread;
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std::mutex mLock;
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std::condition_variable mCond;
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int mHandle;
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};
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#endif //INTERACTIONHANDLER_H
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