673d3b0ab7
Bug: 206576142 Test: dumpsys android.hardware.power.stats.IPowerStats/default Change-Id: Iee66356150a8bdfcd1e0b3fe8b8d5ec9f601f543 Signed-off-by: Darren Hsu <darrenhsu@google.com>
83 lines
2.7 KiB
C++
83 lines
2.7 KiB
C++
/*
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* Copyright (C) 2021 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 "UfsStateResidencyDataProvider.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::ParseInt;
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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 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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const int32_t HIBERNATE_STATE_ID = 0;
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const std::string UFS_NAME = "UFS";
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UfsStateResidencyDataProvider::UfsStateResidencyDataProvider(std::string prefix) : kPrefix(prefix) {}
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bool UfsStateResidencyDataProvider::getStateResidencies(
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std::unordered_map<std::string, std::vector<StateResidency>> *residencies) {
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StateResidency residency;
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residency.id = HIBERNATE_STATE_ID;
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// The transform function converts microseconds to milliseconds.
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std::function<uint64_t(uint64_t)> usecToMs = [](uint64_t a) { return a / 1000; };
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residency.totalTimeInStateMs = usecToMs(readStat(kPrefix + "hibern8_total_us"));
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residency.totalStateEntryCount = readStat(kPrefix + "hibern8_exit_cnt");
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residency.lastEntryTimestampMs = usecToMs(readStat(kPrefix + "last_hibern8_enter_time"));
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residencies->emplace(UFS_NAME, std::vector<StateResidency>{residency});
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return true;
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}
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std::unordered_map<std::string, std::vector<State>> UfsStateResidencyDataProvider::getInfo() {
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return {{UFS_NAME, std::vector<State>{{HIBERNATE_STATE_ID, "HIBERN8"}} }};
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}
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int64_t UfsStateResidencyDataProvider::readStat(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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<< " Error = " << strerror(errno);
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return 0;
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}
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const size_t size = 20;
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char buf[size];
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(void)fread(&buf, sizeof(char), size, fp.get());
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int64_t ret;
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if (!ParseInt(Trim(std::string(buf)), &ret)) {
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LOG(ERROR) << "Failed to parse int64 from [" << std::string(buf) << "]";
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}
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return ret;
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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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