from: 026342771c6642980cb4653b1ec4d857a5d8be54 Bug: 167996145 Change-Id: I2ebf7f019afed1cbe9b60dcd82581bd3a52fe109
158 lines
5.1 KiB
C++
158 lines
5.1 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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#define LOG_TAG "libpixelpowerstats"
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#include "DvfsStateResidencyDataProvider.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 <string>
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#include <utility>
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using android::base::ParseUint;
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using android::base::Split;
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using android::base::StartsWith;
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using android::base::Trim;
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namespace android {
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namespace hardware {
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namespace google {
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namespace pixel {
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namespace powerstats {
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DvfsStateResidencyDataProvider::DvfsStateResidencyDataProvider(std::string path, uint64_t clockRate)
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: mPath(std::move(path)), mClockRate(clockRate) {}
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void DvfsStateResidencyDataProvider::addEntity(
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uint32_t id, std::string name, std::vector<std::pair<std::string, std::string>> states) {
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mPowerEntities.push_back({id, name, states});
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}
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int32_t DvfsStateResidencyDataProvider::matchEntity(char *line) {
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for (auto const &entity : mPowerEntities) {
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if (entity.powerEntityName == Trim(std::string(line))) {
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return entity.powerEntityId;
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}
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}
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return -1;
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}
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int32_t DvfsStateResidencyDataProvider::matchState(char *line, int32_t entityId) {
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uint32_t stateId = 0;
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for (auto const &entity : mPowerEntities) {
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if (entityId == entity.powerEntityId) {
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for (auto const &state : entity.states) {
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if (StartsWith(Trim(std::string(line)), state.second)) {
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return stateId;
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}
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stateId++;
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}
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return -1;
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}
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}
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return -1;
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}
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bool DvfsStateResidencyDataProvider::parseState(char *line, uint64_t &duration, uint64_t &count) {
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std::vector<std::string> parts = Split(line, " ");
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if (parts.size() != 7) {
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return false;
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}
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if (!ParseUint(Trim(parts[3]), &count)) {
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return false;
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}
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if (!ParseUint(Trim(parts[6]), &duration)) {
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return false;
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}
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return true;
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}
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bool DvfsStateResidencyDataProvider::getResults(
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std::unordered_map<uint32_t, PowerEntityStateResidencyResult> &results) {
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std::unique_ptr<FILE, decltype(&fclose)> fp(fopen(mPath.c_str(), "r"), fclose);
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if (!fp) {
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PLOG(ERROR) << __func__ << ":Failed to open file " << mPath
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<< " Error = " << strerror(errno);
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return false;
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}
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for (auto const &stateSpace : getStateSpaces()) {
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PowerEntityStateResidencyResult result = {.powerEntityId = stateSpace.powerEntityId};
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result.stateResidencyData.resize(stateSpace.states.size());
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for (uint32_t i = 0; i < result.stateResidencyData.size(); i++) {
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result.stateResidencyData[i].powerEntityStateId =
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stateSpace.states[i].powerEntityStateId;
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}
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results.insert(std::make_pair(stateSpace.powerEntityId, result));
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}
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size_t len = 0;
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char *line = nullptr;
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int32_t temp = -1, entityId = -1, stateId = -1;
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uint64_t duration, count;
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while (getline(&line, &len, fp.get()) != -1) {
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temp = matchEntity(line);
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// Assign entityId only when a new valid entity is encountered.
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if (temp >= 0) {
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entityId = temp;
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}
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if (entityId >= 0) {
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stateId = matchState(line, entityId);
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if (stateId >= 0) {
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if (parseState(line, duration, count)) {
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results[entityId].stateResidencyData[stateId].totalTimeInStateMs =
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duration / mClockRate;
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results[entityId].stateResidencyData[stateId].totalStateEntryCount = count;
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} else {
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LOG(ERROR) << "Failed to parse duration and count from [" << std::string(line)
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<< "]";
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return false;
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}
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}
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}
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}
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free(line);
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return true;
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}
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std::vector<PowerEntityStateSpace> DvfsStateResidencyDataProvider::getStateSpaces() {
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std::vector<PowerEntityStateSpace> stateSpaces;
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stateSpaces.reserve(mPowerEntities.size());
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for (auto const &entity : mPowerEntities) {
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PowerEntityStateSpace s = {.powerEntityId = entity.powerEntityId};
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s.states.resize(entity.states.size());
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uint32_t stateId = 0;
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for (auto const &state : entity.states) {
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s.states[stateId] = {.powerEntityStateId = stateId,
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.powerEntityStateName = state.first};
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stateId++;
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}
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stateSpaces.emplace_back(s);
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}
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return stateSpaces;
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}
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} // namespace powerstats
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} // namespace pixel
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} // namespace google
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} // namespace hardware
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} // namespace android
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