Media: Add power-systems-health utils
Used for audio power management and statistics.
This CL is library only.
Flag: com.android.media.audioserver.power_stats
Test: atest powerstats_collector_tests
Test: atest audio_powerstats_benchmark
Bug: 350114693
Change-Id: Iab8cae3f4418f86d43acef109ae7ce2776d627ca
diff --git a/media/psh_utils/PowerStatsCollector.cpp b/media/psh_utils/PowerStatsCollector.cpp
new file mode 100644
index 0000000..c166d85
--- /dev/null
+++ b/media/psh_utils/PowerStatsCollector.cpp
@@ -0,0 +1,68 @@
+/*
+ * Copyright (C) 2024 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 <android-base/logging.h>
+#include <psh_utils/PowerStatsCollector.h>
+#include "PowerStatsProvider.h"
+#include <utils/Timers.h>
+
+namespace android::media::psh_utils {
+
+PowerStatsCollector::PowerStatsCollector() {
+ addProvider(std::make_unique<PowerEntityResidencyDataProvider>());
+ addProvider(std::make_unique<RailEnergyDataProvider>());
+}
+
+/* static */
+PowerStatsCollector& PowerStatsCollector::getCollector() {
+ [[clang::no_destroy]] static PowerStatsCollector psc;
+ return psc;
+}
+
+std::shared_ptr<PowerStats> PowerStatsCollector::getStats() const {
+ auto result = std::make_shared<PowerStats>();
+ (void)fill(result.get());
+ return result;
+}
+
+void PowerStatsCollector::addProvider(std::unique_ptr<PowerStatsProvider>&& powerStatsProvider) {
+ mPowerStatsProviders.emplace_back(std::move(powerStatsProvider));
+}
+
+int PowerStatsCollector::fill(PowerStats* stats) const {
+ if (!stats) {
+ LOG(ERROR) << __func__ << ": bad args; stat is null";
+ return 1;
+ }
+
+ for (const auto& provider : mPowerStatsProviders) {
+ if (provider->fill(stats) != 0) {
+ LOG(ERROR) << __func__ << ": a data provider failed";
+ continue;
+ }
+ }
+
+ // boot time follows wall clock time, but starts from boot.
+ stats->metadata.start_time_since_boot_ms = systemTime(SYSTEM_TIME_BOOTTIME) / 1'000'000;
+
+ // wall clock time
+ stats->metadata.start_time_epoch_ms = systemTime(SYSTEM_TIME_REALTIME) / 1'000'000;
+
+ // monotonic time follows boot time, but does not include any time suspended.
+ stats->metadata.start_time_monotonic_ms = systemTime() / 1'000'000;
+ return 0;
+}
+
+} // namespace android::media::psh_utils