89 lines
2.8 KiB
C++
89 lines
2.8 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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#define ATRACE_TAG (ATRACE_TAG_THERMAL | ATRACE_TAG_HAL)
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#include "thermal_files.h"
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#include <android-base/file.h>
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#include <android-base/logging.h>
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#include <android-base/stringprintf.h>
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#include <android-base/strings.h>
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#include <utils/Trace.h>
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#include <algorithm>
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#include <string_view>
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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::StringPrintf;
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std::string ThermalFiles::getThermalFilePath(std::string_view thermal_name) const {
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auto sensor_itr = thermal_name_to_path_map_.find(thermal_name.data());
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if (sensor_itr == thermal_name_to_path_map_.end()) {
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return "";
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}
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return sensor_itr->second;
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}
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bool ThermalFiles::addThermalFile(std::string_view thermal_name, std::string_view path) {
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return thermal_name_to_path_map_.emplace(thermal_name, path).second;
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}
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bool ThermalFiles::readThermalFile(std::string_view thermal_name, std::string *data) const {
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std::string sensor_reading;
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std::string file_path = getThermalFilePath(std::string_view(thermal_name));
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*data = "";
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ATRACE_NAME(StringPrintf("ThermalFiles::readThermalFile - %s", thermal_name.data()).c_str());
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if (file_path.empty()) {
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PLOG(WARNING) << "Failed to find " << thermal_name << "'s path";
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return false;
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}
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if (!::android::base::ReadFileToString(file_path, &sensor_reading)) {
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PLOG(WARNING) << "Failed to read sensor: " << thermal_name;
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return false;
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}
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// Strip the newline.
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*data = ::android::base::Trim(sensor_reading);
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return true;
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}
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bool ThermalFiles::writeCdevFile(std::string_view cdev_name, std::string_view data) {
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std::string file_path =
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getThermalFilePath(android::base::StringPrintf("%s_%s", cdev_name.data(), "w"));
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ATRACE_NAME(StringPrintf("ThermalFiles::writeCdevFile - %s", cdev_name.data()).c_str());
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if (!android::base::WriteStringToFile(data.data(), file_path)) {
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PLOG(WARNING) << "Failed to write cdev: " << cdev_name << " to " << data.data();
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return false;
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}
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return true;
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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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