Merge "Add VmStat atom and read the count of OOM kills" into sc-dev (3d44d6ed) · Commits · e / os / android_frameworks_base

services/core/java/com/android/server/stats/pull/ProcfsMemoryUtil.java

+21 −0

Original line number	Diff line number	Diff line
		@@ -30,6 +30,9 @@ public final class ProcfsMemoryUtil {
		"RssAnon:",
		"VmSwap:"
		};
		private static final String[] VMSTAT_KEYS = new String[] {
		"oom_kill"
		};

		private ProcfsMemoryUtil() {}

		@@ -99,4 +102,22 @@ public final class ProcfsMemoryUtil {
		public int anonRssInKilobytes;
		public int swapInKilobytes;
		}

		/** Reads and parses selected entries of /proc/vmstat. */
		@Nullable
		static VmStat readVmStat() {
		long[] vmstat = new long[VMSTAT_KEYS.length];
		vmstat[0] = -1;
		Process.readProcLines("/proc/vmstat", VMSTAT_KEYS, vmstat);
		if (vmstat[0] == -1) {
		return null;
		}
		VmStat result = new VmStat();
		result.oomKillCount = (int) vmstat[0];
		return result;
		}

		static final class VmStat {
		public int oomKillCount;
		}
		}

+24 −0

Original line number	Diff line number	Diff line
		@@ -544,6 +544,8 @@ public class StatsPullAtomService extends SystemService {
		return pullProcessDmabufMemory(atomTag, data);
		case FrameworkStatsLog.SYSTEM_MEMORY:
		return pullSystemMemory(atomTag, data);
		case FrameworkStatsLog.VMSTAT:
		return pullVmStat(atomTag, data);
		case FrameworkStatsLog.TEMPERATURE:
		synchronized (mTemperatureLock) {
		return pullTemperatureLocked(atomTag, data);
		@@ -842,6 +844,7 @@ public class StatsPullAtomService extends SystemService {
		registerProcessSystemIonHeapSize();
		registerSystemMemory();
		registerProcessDmabufMemory();
		registerVmStat();
		registerTemperature();
		registerCoolingDevice();
		registerBinderCallsStats();
		@@ -2273,6 +2276,27 @@ public class StatsPullAtomService extends SystemService {
		return StatsManager.PULL_SUCCESS;
		}

		private void registerVmStat() {
		int tagId = FrameworkStatsLog.VMSTAT;
		mStatsManager.setPullAtomCallback(
		tagId,
		null, // use default PullAtomMetadata values
		DIRECT_EXECUTOR,
		mStatsCallbackImpl
		);
		}

		int pullVmStat(int atomTag, List<StatsEvent> pulledData) {
		ProcfsMemoryUtil.VmStat vmStat = ProcfsMemoryUtil.readVmStat();
		if (vmStat != null) {
		pulledData.add(
		FrameworkStatsLog.buildStatsEvent(
		atomTag,
		vmStat.oomKillCount));
		}
		return StatsManager.PULL_SUCCESS;
		}

		private void registerTemperature() {
		int tagId = FrameworkStatsLog.TEMPERATURE;
		mStatsManager.setPullAtomCallback(