81 lines
2.6 KiB
C++
81 lines
2.6 KiB
C++
/*
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* Copyright (C) 2020 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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#pragma once
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#include <PowerStatsAidl.h>
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#include <utils/Looper.h>
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#include <utils/Thread.h>
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#include <cstdio>
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#include <cstring>
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#include <mutex>
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#include <thread>
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#include <unordered_map>
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namespace aidl {
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namespace android {
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namespace hardware {
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namespace power {
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namespace stats {
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class DisplayStateResidencyDataProvider : public PowerStats::IStateResidencyDataProvider {
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public:
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// name = powerEntityName to be associated with this data provider
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// path = path to the display state file descriptor
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// state = list of states to be tracked
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DisplayStateResidencyDataProvider(std::string name, std::string path,
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std::vector<std::string> states);
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~DisplayStateResidencyDataProvider();
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// Methods from PowerStats::IStateResidencyDataProvider
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bool getStateResidencies(
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std::unordered_map<std::string, std::vector<StateResidency>> *residencies) override;
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std::unordered_map<std::string, std::vector<State>> getInfo() override;
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private:
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// Poll for display state changes
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void pollLoop();
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// Main function to update the stats when display state change is detected
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void updateStats();
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// File descriptor of display state
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int mFd;
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// Path to display state file descriptor
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const std::string mPath;
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// Power Entity name associated with this data provider
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const std::string mName;
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// List of states to track indexed by mCurState
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std::vector<std::string> mStates;
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// Lock to protect concurrent read/write to mResidencies and mCurState
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std::mutex mLock;
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// Accumulated display state stats indexed by mCurState
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std::vector<StateResidency> mResidencies;
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// Index of current state
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int mCurState;
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// Looper to facilitate polling of display state file desciptor
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::android::sp<::android::Looper> mLooper;
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std::thread mThread;
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};
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} // namespace stats
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} // namespace power
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} // namespace hardware
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} // namespace android
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} // namespace aidl
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