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/*
* Copyright (C) 2020 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.
*/
#include "DvfsStateResidencyDataProvider.h"
#include <android-base/logging.h>
#include <android-base/parseint.h>
#include <android-base/strings.h>
#include <string>
#include <utility>
using android::base::ParseUint;
using android::base::Split;
using android::base::StartsWith;
using android::base::Trim;
static const std::string nameSuffix = "-DVFS";
namespace aidl {
namespace android {
namespace hardware {
namespace power {
namespace stats {
DvfsStateResidencyDataProvider::DvfsStateResidencyDataProvider(std::string path, uint64_t clockRate,
std::vector<Config> cfgs)
: mPath(std::move(path)), mClockRate(clockRate), mPowerEntities(std::move(cfgs)) {}
int32_t DvfsStateResidencyDataProvider::matchEntity(char const *line) {
for (int32_t i = 0; i < mPowerEntities.size(); i++) {
if (mPowerEntities[i].powerEntityName == Trim(std::string(line))) {
return i;
}
}
return -1;
}
int32_t DvfsStateResidencyDataProvider::matchState(char const *line, const Config& powerEntity) {
for (int32_t i = 0; i < powerEntity.states.size(); i++) {
if (StartsWith(Trim(std::string(line)), powerEntity.states[i].second)) {
return i;
}
}
return -1;
}
bool DvfsStateResidencyDataProvider::parseState(char const *line, uint64_t *duration,
uint64_t *count) {
std::vector<std::string> parts = Split(line, " ");
if (parts.size() != 7) {
return false;
}
if (!ParseUint(Trim(parts[3]), count)) {
return false;
}
if (!ParseUint(Trim(parts[6]), duration)) {
return false;
}
return true;
}
bool DvfsStateResidencyDataProvider::getStateResidencies(
std::unordered_map<std::string, std::vector<StateResidency>> *residencies) {
std::unique_ptr<FILE, decltype(&fclose)> fp(fopen(mPath.c_str(), "r"), fclose);
if (!fp) {
PLOG(ERROR) << __func__ << ":Failed to open file " << mPath;
return false;
}
for (const Config &powerEntity : mPowerEntities) {
std::vector<StateResidency> stateResidency(powerEntity.states.size());
for (int32_t i = 0; i < stateResidency.size(); i++) {
stateResidency[i].id = i;
}
residencies->emplace(powerEntity.powerEntityName + nameSuffix, stateResidency);
}
size_t len = 0;
char *line = nullptr;
int32_t temp, powerEntityIndex, stateId = -1;
uint64_t duration, count;
auto it = residencies->end();
while (getline(&line, &len, fp.get()) != -1) {
temp = matchEntity(line);
// Assign new index only when a new valid entity is encountered.
if (temp >= 0) {
powerEntityIndex = temp;
it = residencies->find(mPowerEntities[powerEntityIndex].powerEntityName + nameSuffix);
}
if (it != residencies->end()) {
stateId = matchState(line, mPowerEntities[powerEntityIndex]);
if (stateId >= 0) {
if (parseState(line, &duration, &count)) {
it->second[stateId].totalTimeInStateMs =
duration / mClockRate;
it->second[stateId].totalStateEntryCount = count;
} else {
LOG(ERROR) << "Failed to parse duration and count from [" << std::string(line)
<< "]";
return false;
}
}
}
}
free(line);
return true;
}
std::unordered_map<std::string, std::vector<State>> DvfsStateResidencyDataProvider::getInfo() {
std::unordered_map<std::string, std::vector<State>> info;
for (auto const &entity : mPowerEntities) {
std::vector<State> stateInfo(entity.states.size());
int32_t stateId = 0;
for (auto const &state : entity.states) {
stateInfo[stateId] = State{
.id = stateId,
.name = state.first
};
stateId++;
}
info.emplace(entity.powerEntityName + nameSuffix, stateInfo);
}
return info;
}
} // namespace stats
} // namespace power
} // namespace hardware
} // namespace android
} // namespace aidl
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