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Thermal.cpp
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/*
* Copyright (C) 2018 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 "android.hardware.thermal@2.0-impl"
#include <cmath>
#include <set>
#include <android-base/logging.h>
#include <hidl/HidlTransportSupport.h>
#include "Thermal.h"
#include <errno.h>
#include <math.h>
#include <vector>
#include <hardware/hardware.h>
#include <hardware/thermal.h>
#include "thermal_helper.h"
namespace android {
namespace hardware {
namespace thermal {
namespace V2_0 {
namespace implementation {
using ::android::sp;
using ::android::hardware::interfacesEqual;
using ::android::hardware::thermal::V1_0::ThermalStatus;
using ::android::hardware::thermal::V1_0::ThermalStatusCode;
std::set<sp<IThermalChangedCallback>> gCallbacks;
Thermal::Thermal()
: thermal_helper_(
std::bind(&Thermal::sendThermalChangedCallback, this, std::placeholders::_1)) {
}
// Methods from ::android::hardware::thermal::V1_0::IThermal follow.
Return<void> Thermal::getTemperatures(getTemperatures_cb _hidl_cb) {
ThermalStatus status;
status.code = ThermalStatusCode::SUCCESS;
hidl_vec<Temperature_1_0> temperatures;
if (!thermal_helper_.fill_temperatures_1_0(&temperatures)) {
status.code = ThermalStatusCode::FAILURE;
status.debugMessage = "get temp fail";
}
_hidl_cb(status, temperatures);
return Void();
}
Return<void> Thermal::getCpuUsages(getCpuUsages_cb _hidl_cb) {
ThermalStatus status;
status.code = ThermalStatusCode::SUCCESS;
hidl_vec<CpuUsage> cpu_usages;
if (!thermal_helper_.fillCpuUsages(&cpu_usages)) {
status.code = ThermalStatusCode::FAILURE;
status.debugMessage = "Failed to get CPU usages.";
}
_hidl_cb(status, cpu_usages);
return Void();
}
Return<void> Thermal::getCoolingDevices(getCoolingDevices_cb _hidl_cb) {
ThermalStatus status;
status.code = ThermalStatusCode::SUCCESS;
hidl_vec<CoolingDevice_1_0> cooling_devices;
_hidl_cb(status, cooling_devices);
return Void();
}
// Methods from ::android::hardware::thermal::V2_0::IThermal follow.
Return<void> Thermal::getCurrentTemperatures(bool filterType, TemperatureType type,
getCurrentTemperatures_cb _hidl_cb) {
ThermalStatus status;
status.code = ThermalStatusCode::SUCCESS;
hidl_vec<Temperature_2_0> temperatures;
if (!thermal_helper_.fill_temperatures(filterType, &temperatures, type)) {
status.code = ThermalStatusCode::FAILURE;
status.debugMessage = "get temp fail";
}
_hidl_cb(status, temperatures);
return Void();
}
Return<void> Thermal::getTemperatureThresholds(bool filterType, TemperatureType type,
getTemperatureThresholds_cb _hidl_cb) {
ThermalStatus status;
status.code = ThermalStatusCode::SUCCESS;
hidl_vec<TemperatureThreshold> temperature_thresholds;
if (!thermal_helper_.fill_thresholds(filterType, &temperature_thresholds, type)) {
status.code = ThermalStatusCode::FAILURE;
status.debugMessage = "get temperature thresholds fail";
}
_hidl_cb(status, temperature_thresholds);
return Void();
}
Return<void> Thermal::getCurrentCoolingDevices(bool filterType, CoolingType type,
getCurrentCoolingDevices_cb _hidl_cb) {
ThermalStatus status;
status.code = ThermalStatusCode::SUCCESS;
std::vector<CoolingDevice_2_0> cooling_devices;
if (!thermal_helper_.fill_cooling_devices(filterType, &cooling_devices, type)) {
status.code = ThermalStatusCode::FAILURE;
status.debugMessage = "get cooling devices fail";
}
_hidl_cb(status, cooling_devices);
return Void();
}
Return<void> Thermal::registerThermalChangedCallback(const sp<IThermalChangedCallback>& callback,
bool filterType, TemperatureType type,
registerThermalChangedCallback_cb _hidl_cb) {
ThermalStatus status;
if (callback == nullptr) {
status.code = ThermalStatusCode::FAILURE;
status.debugMessage = "Invalid nullptr callback";
LOG(ERROR) << status.debugMessage;
_hidl_cb(status);
return Void();
} else {
status.code = ThermalStatusCode::SUCCESS;
}
std::lock_guard<std::mutex> _lock(thermal_callback_mutex_);
if (std::any_of(callbacks_.begin(), callbacks_.end(), [&](const CallbackSetting& c) {
return interfacesEqual(c.callback, callback);
})) {
status.code = ThermalStatusCode::FAILURE;
status.debugMessage = "Same callback interface registered already";
LOG(ERROR) << status.debugMessage;
} else {
callbacks_.emplace_back(callback, filterType, type);
LOG(INFO) << "A callback has been registered to ThermalHAL, isFilter: " << filterType
<< " Type: " << android::hardware::thermal::V2_0::toString(type);
}
_hidl_cb(status);
return Void();
}
Return<void> Thermal::unregisterThermalChangedCallback(
const sp<IThermalChangedCallback>& callback, unregisterThermalChangedCallback_cb _hidl_cb) {
ThermalStatus status;
if (callback == nullptr) {
status.code = ThermalStatusCode::FAILURE;
status.debugMessage = "Invalid nullptr callback";
LOG(ERROR) << status.debugMessage;
_hidl_cb(status);
return Void();
} else {
status.code = ThermalStatusCode::SUCCESS;
}
bool removed = false;
std::lock_guard<std::mutex> _lock(thermal_callback_mutex_);
callbacks_.erase(
std::remove_if(callbacks_.begin(), callbacks_.end(),
[&](const CallbackSetting& c) {
if (interfacesEqual(c.callback, callback)) {
LOG(INFO)
<< "A callback has been unregistered from ThermalHAL, isFilter: "
<< c.is_filter_type << " Type: "
<< android::hardware::thermal::V2_0::toString(c.type);
removed = true;
return true;
}
return false;
}),
callbacks_.end());
if (!removed) {
status.code = ThermalStatusCode::FAILURE;
status.debugMessage = "The callback was not registered before";
LOG(ERROR) << status.debugMessage;
}
_hidl_cb(status);
return Void();
}
void Thermal::sendThermalChangedCallback(const std::vector<Temperature_2_0> &temps) {
std::lock_guard<std::mutex> _lock(thermal_callback_mutex_);
for (auto &t : temps) {
LOG(INFO) << "Sending notification: "
<< " Type: " << android::hardware::thermal::V2_0::toString(t.type)
<< " Name: " << t.name << " CurrentValue: " << t.value << " ThrottlingStatus: "
<< android::hardware::thermal::V2_0::toString(t.throttlingStatus);
callbacks_.erase(
std::remove_if(callbacks_.begin(), callbacks_.end(),
[&](const CallbackSetting &c) {
if (!c.is_filter_type || t.type == c.type) {
Return<void> ret = c.callback->notifyThrottling(t);
LOG(INFO) << "sendThermalChangedCallback";
return !ret.isOk();
}
LOG(ERROR)
<< "a Thermal callback is dead, removed from callback list.";
return false;
}),
callbacks_.end());
}
}
IThermal* HIDL_FETCH_IThermal(const char* /* name */) {
return new Thermal();
}
} // namespace implementation
} // namespace V2_0
} // namespace thermal
} // namespace hardware
} // namespace android