96 lines
3.2 KiB
C++
96 lines
3.2 KiB
C++
/*
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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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#pragma once
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#include <android-base/chrono_utils.h>
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#include <chrono>
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#include <queue>
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#include <shared_mutex>
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#include <string>
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#include <unordered_map>
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#include <unordered_set>
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#include "thermal_info.h"
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namespace android {
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namespace hardware {
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namespace thermal {
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namespace V2_0 {
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namespace implementation {
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using android::base::boot_clock;
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struct PowerSample {
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uint64_t energy_counter;
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uint64_t duration;
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};
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struct PowerStatus {
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boot_clock::time_point last_update_time;
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// A vector to record the queues of power sample history.
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std::vector<std::queue<PowerSample>> power_history;
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float last_updated_avg_power;
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};
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// A helper class for monitoring power rails.
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class PowerFiles {
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public:
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PowerFiles() = default;
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~PowerFiles() = default;
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// Disallow copy and assign.
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PowerFiles(const PowerFiles &) = delete;
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void operator=(const PowerFiles &) = delete;
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bool registerPowerRailsToWatch(std::string_view config_path);
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// Update the power data from ODPM sysfs
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bool refreshPowerStatus(void);
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// Get power status map
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const std::unordered_map<std::string, PowerStatus> &GetPowerStatusMap() const {
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std::shared_lock<std::shared_mutex> _lock(power_status_map_mutex_);
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return power_status_map_;
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}
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// Get power rail info map
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const std::unordered_map<std::string, PowerRailInfo> &GetPowerRailInfoMap() const {
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return power_rail_info_map_;
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}
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private:
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// Update energy value to energy_info_map_, return false if the value is failed to update.
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bool updateEnergyValues(void);
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// Compute the average power for physical power rail.
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float updateAveragePower(std::string_view power_rail, std::queue<PowerSample> *power_history);
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// Update the power data for the target power rail.
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float updatePowerRail(std::string_view power_rail);
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// Find the energy source path, return false if no energy source found.
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bool findEnergySourceToWatch(void);
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// The map to record the energy counter for each power rail.
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std::unordered_map<std::string, PowerSample> energy_info_map_;
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// The map to record the power data for each thermal sensor.
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std::unordered_map<std::string, PowerStatus> power_status_map_;
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mutable std::shared_mutex power_status_map_mutex_;
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// The map to record the power rail information from thermal config
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std::unordered_map<std::string, PowerRailInfo> power_rail_info_map_;
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// The set to store the energy source paths
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std::unordered_set<std::string> energy_path_set_;
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};
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} // namespace implementation
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} // namespace V2_0
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} // namespace thermal
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} // namespace hardware
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} // namespace android
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