72 lines
2.2 KiB
C++
72 lines
2.2 KiB
C++
#pragma once
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/*
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* Copyright (C) 2021 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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#include <chrono>
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#include <map>
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#include "ICpuLoadReader.h"
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#include "IFilesystem.h"
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#include "ITimeSource.h"
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#include "Model.h"
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#include "RealFilesystem.h"
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#include "TimeSource.h"
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namespace aidl {
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namespace google {
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namespace hardware {
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namespace power {
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namespace impl {
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namespace pixel {
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struct CpuTime {
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std::chrono::microseconds idleTime;
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std::chrono::microseconds totalTime;
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};
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// Reads CPU idle stats from /sys/devices/system/cpu/cpuN/cpuidle.
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class CpuLoadReaderSysDevices : public ICpuLoadReader {
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public:
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CpuLoadReaderSysDevices()
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: mFilesystem(std::make_unique<RealFilesystem>()),
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mTimeSource(std::make_unique<TimeSource>()) {}
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CpuLoadReaderSysDevices(std::unique_ptr<IFilesystem> filesystem,
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std::unique_ptr<ITimeSource> timeSource)
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: mFilesystem(std::move(filesystem)), mTimeSource(std::move(timeSource)) {}
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bool Init() override;
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bool GetRecentCpuLoads(std::array<double, NUM_CPU_CORES> *cpuCoreIdleTimesPercentage) override;
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void DumpToStream(std::stringstream &stream) const override;
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private:
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const std::unique_ptr<IFilesystem> mFilesystem;
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const std::unique_ptr<ITimeSource> mTimeSource;
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std::array<CpuTime, NUM_CPU_CORES> mPreviousCpuTimes;
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std::vector<std::string> mIdleStateNames;
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bool ReadCpuTimes(std::array<CpuTime, NUM_CPU_CORES> *result) const;
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bool ReadIdleStateNames(std::vector<std::string> *result) const;
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};
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} // namespace pixel
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} // namespace impl
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} // namespace power
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} // namespace hardware
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} // namespace google
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} // namespace aidl
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