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/*
* Copyright (C) 2021 The Android Open Source Project
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
#define ATRACE_TAG (ATRACE_TAG_THERMAL | ATRACE_TAG_HAL)
#include "thermal_files.h"
#include <android-base/file.h>
#include <android-base/logging.h>
#include <android-base/stringprintf.h>
#include <android-base/strings.h>
#include <utils/Trace.h>
#include <algorithm>
#include <string_view>
namespace android {
namespace hardware {
namespace thermal {
namespace V2_0 {
namespace implementation {
using android::base::StringPrintf;
std::string ThermalFiles::getThermalFilePath(std::string_view thermal_name) const {
auto sensor_itr = thermal_name_to_path_map_.find(thermal_name.data());
if (sensor_itr == thermal_name_to_path_map_.end()) {
return "";
}
return sensor_itr->second;
}
bool ThermalFiles::addThermalFile(std::string_view thermal_name, std::string_view path) {
return thermal_name_to_path_map_.emplace(thermal_name, path).second;
}
bool ThermalFiles::readThermalFile(std::string_view thermal_name, std::string *data) const {
std::string sensor_reading;
std::string file_path = getThermalFilePath(std::string_view(thermal_name));
*data = "";
ATRACE_NAME(StringPrintf("ThermalFiles::readThermalFile - %s", thermal_name.data()).c_str());
if (file_path.empty()) {
PLOG(WARNING) << "Failed to find " << thermal_name << "'s path";
return false;
}
if (!::android::base::ReadFileToString(file_path, &sensor_reading)) {
PLOG(WARNING) << "Failed to read sensor: " << thermal_name;
return false;
}
// Strip the newline.
*data = ::android::base::Trim(sensor_reading);
return true;
}
bool ThermalFiles::writeCdevFile(std::string_view cdev_name, std::string_view data) {
std::string file_path =
getThermalFilePath(android::base::StringPrintf("%s_%s", cdev_name.data(), "w"));
ATRACE_NAME(StringPrintf("ThermalFiles::writeCdevFile - %s", cdev_name.data()).c_str());
if (!android::base::WriteStringToFile(data.data(), file_path)) {
PLOG(WARNING) << "Failed to write cdev: " << cdev_name << " to " << data.data();
return false;
}
return true;
}
} // namespace implementation
} // namespace V2_0
} // namespace thermal
} // namespace hardware
} // namespace android
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