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/*
* Copyright (C) 2023 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 "CpupmStateResidencyDataProvider.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;
namespace aidl {
namespace android {
namespace hardware {
namespace power {
namespace stats {
CpupmStateResidencyDataProvider::CpupmStateResidencyDataProvider(
const std::string &path,
const Config &config,
const std::string &sleepPath,
const SleepConfig &sleepConfig)
: mPath(std::move(path)),
mConfig(std::move(config)),
mSleepPath(std::move(sleepPath)),
mSleepConfig(std::move(sleepConfig)) {}
int32_t CpupmStateResidencyDataProvider::matchState(char const *line) {
for (int32_t i = 0; i < mConfig.states.size(); i++) {
if (mConfig.states[i].second == Trim(std::string(line))) {
return i;
}
}
return -1;
}
int32_t CpupmStateResidencyDataProvider::matchEntity(char const *line) {
for (int32_t i = 0; i < mConfig.entities.size(); i++) {
if (StartsWith(Trim(std::string(line)), mConfig.entities[i].second)) {
return i;
}
}
return -1;
}
bool CpupmStateResidencyDataProvider::parseState(
char const *line, uint64_t *duration, uint64_t *count) {
std::vector<std::string> parts = Split(line, " ");
if (parts.size() != 5) {
return false;
}
if (!ParseUint(Trim(parts[1]), count)) {
return false;
}
if (!ParseUint(Trim(parts[3]), duration)) {
return false;
}
return true;
}
bool CpupmStateResidencyDataProvider::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;
}
std::unique_ptr<FILE, decltype(&fclose)> sleepFp(fopen(mSleepPath.c_str(), "r"), fclose);
if (!sleepFp) {
PLOG(ERROR) << __func__ << ":Failed to open file " << mSleepPath;
return false;
}
for (int32_t i = 0; i < mConfig.entities.size(); i++) {
std::vector<StateResidency> stateResidencies(mConfig.states.size());
for (int32_t j = 0; j < stateResidencies.size(); j++) {
stateResidencies[j].id = j;
}
residencies->emplace(mConfig.entities[i].first, stateResidencies);
}
size_t len = 0;
char *line = nullptr;
int32_t temp, entityIndex, stateId = -1;
uint64_t duration, count, sleepDurationMs = 0;
auto it = residencies->end();
int32_t sleepIndex = 0;
// Parse state for sleep duration
while (getline(&line, &len, sleepFp.get()) != -1) {
std::string trimedLine = Trim(std::string(line));
if (StartsWith(trimedLine, mSleepConfig[sleepIndex])) {
if (sleepIndex < mSleepConfig.size() - 1) {
sleepIndex++;
continue;
} else {
std::vector<std::string> parts = Split(trimedLine, " ");
if (parts.size() == 2) {
ParseUint(parts[1], &sleepDurationMs);
sleepDurationMs /= NS_TO_MS;
}
break;
}
}
}
// Parse state for CPUPM entities
while (getline(&line, &len, fp.get()) != -1) {
temp = matchState(line);
// Assign new id only when a new valid state is encountered.
if (temp >= 0) {
stateId = temp;
}
if (stateId < 0) continue;
entityIndex = matchEntity(line);
if (entityIndex < 0) continue;
it = residencies->find(mConfig.entities[entityIndex].first);
if (it != residencies->end()) {
if (parseState(line, &duration, &count)) {
it->second[stateId].totalTimeInStateMs = duration / US_TO_MS + sleepDurationMs;
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>> CpupmStateResidencyDataProvider::getInfo() {
std::unordered_map<std::string, std::vector<State>> info;
for (auto const &entity : mConfig.entities) {
std::vector<State> stateInfo(mConfig.states.size());
int32_t stateId = 0;
for (auto const &state : mConfig.states) {
stateInfo[stateId] = State{
.id = stateId,
.name = state.first
};
stateId++;
}
info.emplace(entity.first, stateInfo);
}
return info;
}
} // namespace stats
} // namespace power
} // namespace hardware
} // namespace android
} // namespace aidl
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