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/*
* Copyright (C) 2022 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 LOG_TAG "mitigation-logger"
#include <android-base/chrono_utils.h>
#include <android-base/file.h>
#include <android-base/logging.h>
#include <android-base/parseint.h>
#include <android-base/properties.h>
#include <android-base/strings.h>
#include <battery_mitigation/MitigationThermalManager.h>
#include <errno.h>
#include <sys/time.h>
#include <chrono>
#include <cmath>
#include <ctime>
#include <iomanip>
#include <iostream>
#include <string>
#define NUM_OF_SAMPLES 20
#define CAPTURE_INTERVAL_S 2 /* 2 seconds between new capture */
namespace android {
namespace hardware {
namespace google {
namespace pixel {
using android::hardware::thermal::V1_0::ThermalStatus;
using android::hardware::thermal::V1_0::ThermalStatusCode;
MitigationThermalManager &MitigationThermalManager::getInstance() {
static MitigationThermalManager mitigationThermalManager;
return mitigationThermalManager;
}
void MitigationThermalManager::remove() {
if (!thermal) {
return;
}
if (callback) {
ThermalStatus returnStatus;
auto ret = thermal->unregisterThermalChangedCallback(
callback, [&returnStatus](ThermalStatus status) { returnStatus = status; });
if (!ret.isOk() || returnStatus.code != ThermalStatusCode::SUCCESS) {
LOG(ERROR) << "Failed to release thermal callback!";
}
}
if (deathRecipient) {
auto ret = thermal->unlinkToDeath(deathRecipient);
if (!ret.isOk()) {
LOG(ERROR) << "Failed to release thermal death notification!";
}
}
}
MitigationThermalManager::MitigationThermalManager() {
if (!connectThermalHal()) {
remove();
}
}
MitigationThermalManager::~MitigationThermalManager() {
remove();
}
void MitigationThermalManager::updateConfig(const struct MitigationConfig::Config &cfg) {
kLogFilePath = std::string(cfg.LogFilePath);
kSystemPath = cfg.SystemPath;
kSystemName = cfg.SystemName;
kFilteredZones = cfg.FilteredZones;
kTimestampFormat = cfg.TimestampFormat;
}
bool MitigationThermalManager::connectThermalHal() {
thermal = IThermal::getService();
if (thermal) {
lastCapturedTime = ::android::base::boot_clock::now();
registerCallback();
return true;
} else {
LOG(ERROR) << "Cannot get IThermal service!";
}
return false;
}
bool MitigationThermalManager::isMitigationTemperature(const Temperature &temperature) {
if (std::find(kFilteredZones.begin(), kFilteredZones.end(), temperature.name) !=
kFilteredZones.end()) {
return true;
}
return false;
}
void MitigationThermalManager::thermalCb(const Temperature &temperature) {
if ((temperature.throttlingStatus == ThrottlingSeverity::NONE) ||
(!isMitigationTemperature(temperature))) {
return;
}
auto currentTime = ::android::base::boot_clock::now();
auto delta =
std::chrono::duration_cast<std::chrono::seconds>(currentTime - lastCapturedTime);
if (delta.count() < CAPTURE_INTERVAL_S) {
/* Do not log if delta is within 2 seconds */
return;
}
int flag = O_WRONLY | O_CREAT | O_NOFOLLOW | O_CLOEXEC | O_APPEND | O_TRUNC;
android::base::unique_fd fd(TEMP_FAILURE_RETRY(open(kLogFilePath.c_str(), flag, 0644)));
lastCapturedTime = currentTime;
std::stringstream oss;
oss << temperature.name << " triggered at " << temperature.value << std::endl << std::flush;
android::base::WriteStringToFd(oss.str(), fd);
fsync(fd);
for (int i = 0; i < NUM_OF_SAMPLES; i++) {
auto now = std::chrono::system_clock::now();
auto time_sec = std::chrono::system_clock::to_time_t(now);
auto ms = std::chrono::duration_cast<std::chrono::milliseconds>(now.time_since_epoch()) -
std::chrono::duration_cast<std::chrono::seconds>(now.time_since_epoch());
struct tm now_tm;
localtime_r(&time_sec, &now_tm);
oss << std::put_time(&now_tm, kTimestampFormat.c_str()) << "." << std::setw(3)
<< std::setfill('0') << ms.count() << std::endl
<< std::flush;
android::base::WriteStringToFd(oss.str(), fd);
fsync(fd);
oss.str("");
/* log System info */
for (int j = 0; j < kSystemName.size(); j++) {
std::string value;
bool result = android::base::ReadFileToString(kSystemPath[j], &value);
if (!result) {
LOG(ERROR) << "Could not read: " << kSystemName[j];
}
android::base::WriteStringToFd(kSystemName[j] + ":" + value, fd);
}
}
fsync(fd);
}
void MitigationThermalManager::registerCallback() {
if (!thermal) {
LOG(ERROR) << "Cannot register thermal callback!";
return;
}
ThermalStatus returnStatus;
// Create thermal death recipient object.
if (deathRecipient == nullptr) {
deathRecipient = new MitigationThermalManager::ThermalDeathRecipient();
}
// Create thermal callback recipient object.
if (callback == nullptr) {
callback = new MitigationThermalManager::ThermalCallback(
[this](const Temperature &temperature) {
std::lock_guard api_lock(mutex_);
thermalCb(temperature);
});
}
// Register thermal callback SKIN to thermal hal to cover all. Cannot register twice.
auto ret_callback = thermal->registerThermalChangedCallback(
callback, false, TemperatureType::SKIN,
[&returnStatus](ThermalStatus status) { return returnStatus = status; });
if (!ret_callback.isOk() || returnStatus.code != ThermalStatusCode::SUCCESS) {
LOG(ERROR) << "Failed to register thermal callback!";
}
// Register thermal death notification to thermal hal.
auto retLink = thermal->linkToDeath(deathRecipient, 0);
if (!retLink.isOk()) {
LOG(ERROR) << "Failed to register thermal death notification!";
}
}
} // namespace pixel
} // namespace google
} // namespace hardware
} // namespace android
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