113 lines
3.6 KiB
C++
113 lines
3.6 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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#include <android-base/logging.h>
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#include <android-base/properties.h>
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#include <android-base/strings.h>
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#include <dataproviders/WlanStateResidencyDataProvider.h>
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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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enum {
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ACTIVE_ID = 0,
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DEEPSLEEP_ID = 1,
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};
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static bool extractStat(const char *line, const std::string &prefix, uint64_t *stat) {
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char const *prefixStart = strstr(line, prefix.c_str());
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if (prefixStart == nullptr) {
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// Did not find the given prefix
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return false;
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}
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*stat = strtoull(prefixStart + prefix.length(), nullptr, 0);
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return true;
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}
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bool WlanStateResidencyDataProvider::getStateResidencies(
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std::unordered_map<std::string, std::vector<StateResidency>> *residencies) {
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std::vector<StateResidency> result = {{.id = ACTIVE_ID}, {.id = DEEPSLEEP_ID}};
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std::string wlanDriverStatus = ::android::base::GetProperty("wlan.driver.status", "unloaded");
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if (wlanDriverStatus != "ok") {
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LOG(ERROR) << ": wlan is " << wlanDriverStatus;
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// Return 0s for Wlan stats, because the driver is unloaded
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residencies->emplace(mName, result);
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return true;
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}
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// Using FILE* instead of std::ifstream for performance reasons (b/122253123)
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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) << ":Failed to open file " << mPath;
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return false;
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}
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size_t numFieldsRead = 0;
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const size_t numFields = 4;
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size_t len = 0;
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char *line = nullptr;
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while ((numFieldsRead < numFields) && (getline(&line, &len, fp.get()) != -1)) {
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uint64_t stat = 0;
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if (extractStat(line, "cumulative_sleep_time_ms:", &stat)) {
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result[1].totalTimeInStateMs = stat;
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++numFieldsRead;
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} else if (extractStat(line, "cumulative_total_on_time_ms:", &stat)) {
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result[0].totalTimeInStateMs = stat;
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++numFieldsRead;
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} else if (extractStat(line, "deep_sleep_enter_counter:", &stat)) {
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result[0].totalStateEntryCount = stat;
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result[1].totalStateEntryCount = stat;
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++numFieldsRead;
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} else if (extractStat(line, "last_deep_sleep_enter_tstamp_ms:", &stat)) {
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result[1].lastEntryTimestampMs = stat;
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++numFieldsRead;
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}
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}
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free(line);
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// End of file was reached and not all state data was parsed. Something
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// went wrong
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if (numFieldsRead != numFields) {
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LOG(ERROR) << __func__ << ": failed to parse stats for wlan";
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return false;
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}
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residencies->emplace(mName, result);
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return true;
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}
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std::unordered_map<std::string, std::vector<State>> WlanStateResidencyDataProvider::getInfo() {
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std::unordered_map<std::string, std::vector<State>> ret = {
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{mName,
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{{.id = ACTIVE_ID, .name = "Active"}, {.id = DEEPSLEEP_ID, .name = "Deep-Sleep"}}},
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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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