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/*
* Copyright (C) 2019 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 "pwrstats_util"
#include "RailEnergyDataProvider.h"
#include <android-base/logging.h>
#include <android/hardware/power/stats/1.0/IPowerStats.h>
using android::sp;
using android::hardware::Return;
using android::hardware::power::stats::V1_0::IPowerStats;
using android::hardware::power::stats::V1_0::Status;
int RailEnergyDataProvider::getImpl(PowerStatistic* stat) const {
sp<android::hardware::power::stats::V1_0::IPowerStats> powerStatsService =
android::hardware::power::stats::V1_0::IPowerStats::getService();
if (powerStatsService == nullptr) {
LOG(ERROR) << "unable to get power.stats HAL service";
return 1;
}
std::unordered_map<uint32_t, std::string> railNames;
Return<void> ret;
Status retStatus = Status::SUCCESS;
ret = powerStatsService->getRailInfo([&railNames, &retStatus](auto railInfos, auto status) {
retStatus = status;
if (status != Status::SUCCESS) {
return;
}
for (auto const& info : railInfos) {
railNames.emplace(info.index, info.railName);
}
});
if (retStatus == Status::NOT_SUPPORTED) {
LOG(WARNING) << __func__ << ": rail energy stats not supported";
return 0;
}
if (!ret.isOk() || retStatus != Status::SUCCESS) {
LOG(ERROR) << __func__ << ": no rail information available";
return 1;
}
auto railEntries = stat->mutable_rail_energy();
bool resultSuccess = true;
ret = powerStatsService->getEnergyData(
{}, [&railEntries, &railNames, &resultSuccess](auto energyData, auto status) {
if (status != Status::SUCCESS) {
LOG(ERROR) << __func__ << ": unable to get rail energy";
resultSuccess = false;
return;
}
for (auto const& energyDatum : energyData) {
auto entry = railEntries->add_entry();
entry->set_rail_name(railNames.at(energyDatum.index));
entry->set_energy_uws(energyDatum.energy);
}
});
if (!ret.isOk() || !resultSuccess) {
stat->clear_rail_energy();
LOG(ERROR) << __func__ << ": failed to get rail energy stats";
return 1;
}
// Sort entries by name. Sorting is needed to make interval processing efficient.
std::sort(railEntries->mutable_entry()->begin(), railEntries->mutable_entry()->end(),
[](const auto& a, const auto& b) { return a.rail_name() < b.rail_name(); });
return 0;
}
int RailEnergyDataProvider::getImpl(const PowerStatistic& start, PowerStatistic* interval) const {
auto startEnergy = start.rail_energy().entry();
auto intervalEnergy = interval->mutable_rail_energy()->mutable_entry();
// If start and interval are not the same size then they cannot have matching data
if (startEnergy.size() != intervalEnergy->size()) {
LOG(ERROR) << __func__ << ": mismatched data";
interval->clear_rail_energy();
return 1;
}
for (int i = 0; i < startEnergy.size(); ++i) {
// Check and make sure each entry matches. Data are in sorted order so if there is a
// mismatch then we will bail.
if (startEnergy.Get(i).rail_name() != intervalEnergy->Get(i).rail_name()) {
LOG(ERROR) << __func__ << ": mismatched data";
interval->clear_rail_energy();
return 1;
}
auto delta = intervalEnergy->Get(i).energy_uws() - startEnergy.Get(i).energy_uws();
intervalEnergy->Mutable(i)->set_energy_uws(delta);
}
return 0;
}
void RailEnergyDataProvider::dumpImpl(const PowerStatistic& stat, std::ostream* output) const {
*output << "Rail Energy:" << std::endl;
for (auto const& rail : stat.rail_energy().entry()) {
*output << rail.rail_name() << "=" << rail.energy_uws() << std::endl;
}
*output << std::endl;
}
PowerStatCase RailEnergyDataProvider::typeOf() const {
return PowerStatCase::kRailEnergy;
}
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