Donate to e Foundation | Murena handsets with /e/OS | Own a part of Murena! Learn more

Commit a8d2599b authored by Jing Ji's avatar Jing Ji
Browse files

Emit trace point event on process freeze/unfreeze 

Bug: 244386510
Test: Perfetto
Change-Id: I55c2ec39506f63171489205fbcb17c149b9afa8e
parent a133b8be

services/core/java/com/android/server/am/CachedAppOptimizer.java

+11 −1
Original line number Diff line number Diff line
@@ -40,18 +40,19 @@ import android.util.EventLog; 
import android.util.Pair;

import android.util.Slog;

import android.util.SparseArray;



import com.android.internal.annotations.GuardedBy;

import com.android.internal.annotations.VisibleForTesting;

import com.android.internal.os.ProcLocksReader;

import com.android.internal.util.FrameworkStatsLog;

import com.android.server.ServiceThread;



import java.io.FileReader;

import java.io.IOException;

import java.io.PrintWriter;

import java.util.ArrayList;

import java.util.Arrays;

import java.util.EnumMap;

import java.util.HashMap;

import java.util.HashSet;

import java.util.LinkedHashMap;

import java.util.LinkedList;
@@ -109,6 +110,7 @@ public final class CachedAppOptimizer { 
    private static final int COMPACT_ACTION_ANON_FLAG = 2;



    private static final String ATRACE_COMPACTION_TRACK = "Compaction";

    private static final String ATRACE_FREEZER_TRACK = "Freezer";



    // Defaults for phenotype flags.

    @VisibleForTesting static final Boolean DEFAULT_USE_COMPACTION = false;
@@ -1309,6 +1311,7 @@ public final class CachedAppOptimizer { 
        }



        try {

            traceAppFreeze(app.processName, pid, false);

            Process.setProcessFrozen(pid, app.uid, false);



            opt.setFreezeUnfreezeTime(SystemClock.uptimeMillis());
@@ -1359,6 +1362,7 @@ public final class CachedAppOptimizer { 
            }



            try {

                traceAppFreeze(app.processName, pid, false);

                Process.setProcessFrozen(pid, app.uid, false);

            } catch (Exception e) {

                Slog.e(TAG_AM, "Unable to quick unfreeze " + pid);
@@ -1366,6 +1370,11 @@ public final class CachedAppOptimizer { 
        }

    }



    private static void traceAppFreeze(String processName, int pid, boolean freeze) {

        Trace.instantForTrack(Trace.TRACE_TAG_ACTIVITY_MANAGER, ATRACE_FREEZER_TRACK,

                (freeze ? "Freeze " : "Unfreeze ") + processName + ":" + pid);

    }



    /**

     * To be called when the given app is killed.

     */
@@ -1959,6 +1968,7 @@ public final class CachedAppOptimizer { 
                long unfreezeTime = opt.getFreezeUnfreezeTime();



                try {

                    traceAppFreeze(proc.processName, pid, true);

                    Process.setProcessFrozen(pid, proc.uid, true);



                    opt.setFreezeUnfreezeTime(SystemClock.uptimeMillis());