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