device_google_gs101/powerstats/DvfsStateResidencyDataProvider.cpp
Robin Peng c2b5ca99e3 Move slider into gs101 and <device>
from: 026342771c6642980cb4653b1ec4d857a5d8be54

Bug: 167996145
Change-Id: I2ebf7f019afed1cbe9b60dcd82581bd3a52fe109
2021-03-06 16:31:12 +08:00

158 lines
5.1 KiB
C++

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