96 lines
3.1 KiB
C++
96 lines
3.1 KiB
C++
/*
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* Copyright (C) 2020 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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#include <dataproviders/PowerStatsEnergyAttribution.h>
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#include <android-base/logging.h>
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#include <android-base/parseint.h>
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#include <android-base/strings.h>
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#include <utility>
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using android::base::Split;
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using android::base::Trim;
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namespace aidl {
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namespace android {
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namespace hardware {
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namespace power {
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namespace stats {
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bool PowerStatsEnergyAttribution::readUidTimeInState(AttributionStats *attrStats,
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std::string path) {
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std::unique_ptr<FILE, decltype(&fclose)> fp(fopen(path.c_str(), "r"), fclose);
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if (!fp) {
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PLOG(ERROR) << __func__ << ":Failed to open file " << path;
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return false;
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}
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char *buf = nullptr;
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size_t size = 0;
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getline(&buf, &size, fp.get());
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attrStats->uidTimeInStateNames = Split(Trim(buf), " ");
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// first element will be "uid:" and it's useless
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attrStats->uidTimeInStateNames.erase(attrStats->uidTimeInStateNames.begin());
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while (getline(&buf, &size, fp.get()) != -1) {
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std::vector<std::string> uidInfos = Split(Trim(buf), " ");
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uidInfos[0].pop_back();
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int32_t uid;
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if (!::android::base::ParseInt(uidInfos[0], &uid)) {
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PLOG(ERROR) << __func__ << "Failed to parse uid from " << path;
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free(buf);
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return false;
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}
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std::vector<long> uidStats;
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// first element will be uid number so skipping it
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for (auto it = ++uidInfos.begin(); it != uidInfos.end(); ++it) {
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long uidStat;
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if (!::android::base::ParseInt(*it, &uidStat)) {
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PLOG(ERROR) << __func__ << "Failed to parse uidStat from " << path;
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free(buf);
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return false;
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}
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uidStats.push_back(uidStat);
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}
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attrStats->uidTimeInStats.emplace(uid, uidStats);
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}
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free(buf);
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return true;
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}
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AttributionStats PowerStatsEnergyAttribution::getAttributionStats(
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std::unordered_map<int32_t,
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std::string> paths) {
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AttributionStats attrStats;
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if (paths.count(UID_TIME_IN_STATE) &&
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!readUidTimeInState(&attrStats, paths.at(UID_TIME_IN_STATE))) {
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PLOG(ERROR) << ":Failed to read uid_time_in_state";
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return {};
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}
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return attrStats;
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}
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} // namespace stats
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} // namespace power
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} // namespace hardware
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} // namespace android
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} // namespace aidl
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