Merge "Log measurements from LatencyTracker to statsd" (d68c208e) · Commits · e / os / android_frameworks_base

core/java/com/android/internal/util/LatencyTracker.java

+20 −30

Original line number	Diff line number	Diff line
		@@ -14,13 +14,9 @@

		package com.android.internal.util;

		import android.content.BroadcastReceiver;
		import android.content.Context;
		import android.content.Intent;
		import android.content.IntentFilter;
		import android.os.Build;
		import android.os.SystemClock;
		import android.os.SystemProperties;
		import android.os.Trace;
		import android.util.EventLog;
		import android.util.Log;
		@@ -29,18 +25,14 @@ import android.util.SparseLongArray;
		import com.android.internal.logging.EventLogTags;

		/**
		* Class to track various latencies in SystemUI. It then outputs the latency to logcat so these
		* latencies can be captured by tests and then used for dashboards.
		* Class to track various latencies in SystemUI. It then writes the latency to statsd and also
		* outputs it to logcat so these latencies can be captured by tests and then used for dashboards.
		* <p>
		* This is currently only in Keyguard so it can be shared between SystemUI and Keyguard, but
		* eventually we'd want to merge these two packages together so Keyguard can use common classes
		* that are shared with SystemUI.
		*/
		public class LatencyTracker {

		private static final String ACTION_RELOAD_PROPERTY =
		"com.android.systemui.RELOAD_LATENCY_TRACKER_PROPERTY";

		private static final String TAG = "LatencyTracker";

		/**
		@@ -82,7 +74,7 @@ public class LatencyTracker {
		/*
		* Time between we get a face acquired signal until we start with the unlock animation
		*/
		public static final int ACTION_FACE_WAKE_AND_UNLOCK = 6;
		public static final int ACTION_FACE_WAKE_AND_UNLOCK = 7;

		private static final String[] NAMES = new String[] {
		"expand panel",
		@@ -94,38 +86,34 @@ public class LatencyTracker {
		"rotate the screen",
		"face wake-and-unlock" };

		private static final int[] STATSD_ACTION = new int[] {
		FrameworkStatsLog.UIACTION_LATENCY_REPORTED__ACTION__ACTION_EXPAND_PANEL,
		FrameworkStatsLog.UIACTION_LATENCY_REPORTED__ACTION__ACTION_TOGGLE_RECENTS,
		FrameworkStatsLog.UIACTION_LATENCY_REPORTED__ACTION__ACTION_FINGERPRINT_WAKE_AND_UNLOCK,
		FrameworkStatsLog.UIACTION_LATENCY_REPORTED__ACTION__ACTION_CHECK_CREDENTIAL,
		FrameworkStatsLog.UIACTION_LATENCY_REPORTED__ACTION__ACTION_CHECK_CREDENTIAL_UNLOCKED,
		FrameworkStatsLog.UIACTION_LATENCY_REPORTED__ACTION__ACTION_TURN_ON_SCREEN,
		FrameworkStatsLog.UIACTION_LATENCY_REPORTED__ACTION__ACTION_ROTATE_SCREEN,
		FrameworkStatsLog.UIACTION_LATENCY_REPORTED__ACTION__ACTION_FACE_WAKE_AND_UNLOCK,
		};

		private static LatencyTracker sLatencyTracker;

		private final SparseLongArray mStartRtc = new SparseLongArray();
		private boolean mEnabled;

		public static LatencyTracker getInstance(Context context) {
		if (sLatencyTracker == null) {
		sLatencyTracker = new LatencyTracker(context.getApplicationContext());
		sLatencyTracker = new LatencyTracker();
		}
		return sLatencyTracker;
		}

		private LatencyTracker(Context context) {
		context.registerReceiver(new BroadcastReceiver() {
		@Override
		public void onReceive(Context context, Intent intent) {
		reloadProperty();
		}
		}, new IntentFilter(ACTION_RELOAD_PROPERTY));
		reloadProperty();
		}

		private void reloadProperty() {
		mEnabled = SystemProperties.getBoolean("debug.systemui.latency_tracking", false);
		}

		public static boolean isEnabled(Context ctx) {
		return getInstance(ctx).isEnabled();
		}

		public boolean isEnabled() {
		return Build.IS_DEBUGGABLE && mEnabled;
		return Build.IS_DEBUGGABLE;
		}

		/**
		@@ -134,7 +122,7 @@ public class LatencyTracker {
		* @param action The action to start. One of the ACTION_* values.
		*/
		public void onActionStart(int action) {
		if (!mEnabled) {
		if (!isEnabled()) {
		return;
		}
		Trace.asyncTraceBegin(Trace.TRACE_TAG_APP, NAMES[action], 0);
		@@ -147,7 +135,7 @@ public class LatencyTracker {
		* @param action The action to end. One of the ACTION_* values.
		*/
		public void onActionEnd(int action) {
		if (!mEnabled) {
		if (!isEnabled()) {
		return;
		}
		long endRtc = SystemClock.elapsedRealtime();
		@@ -169,5 +157,7 @@ public class LatencyTracker {
		public static void logAction(int action, int duration) {
		Log.i(TAG, "action=" + action + " latency=" + duration);
		EventLog.writeEvent(EventLogTags.SYSUI_LATENCY, action, duration);
		FrameworkStatsLog.write(
		FrameworkStatsLog.UI_ACTION_LATENCY_REPORTED, STATSD_ACTION[action], duration);
		}
		}