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Commit c463be41 authored by Mikhail Naganov's avatar Mikhail Naganov
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AudioService: Add the service's message queue to the dump 

Clogged queue means UI and other commands can not reach
the service and will cause volume controls to malfunction.

Example dump snippet:

Message handler (watch for unhandled messages):
  Handler (com.android.server.audio.AudioService$AudioHandler) {a904698} @ 61825
    Looper (AudioService, tid 118) {6808ef1}
      Message 0: { when=-52s689ms what=25 ... }
      Message 1: { when=-52s8ms what=8 ... }
      Message 2: { when=-52s4ms what=8 ... }
      ...
      Message 35: { when=-2s436ms what=0 ... }
      (Total messages: 36, polling=false, quitting=false)

This indicates that the command queue is not being processed
because the handler got stuck. Checking stacks of the system_server
can help in figuring out the reason.

Bug: 135763139
Test: adb shell dumpsys audio
Change-Id: I02009720668af218edb38d5a5948a5964b72c685
parent e1c38e1a

services/core/java/com/android/server/audio/AudioService.java

+7 −0
Original line number Original line Diff line number Diff line
@@ -127,6 +127,7 @@ import android.util.AndroidRuntimeException; 
import android.util.IntArray;

import android.util.IntArray;

import android.util.Log;

import android.util.Log;

import android.util.MathUtils;

import android.util.MathUtils;

import android.util.PrintWriterPrinter;

import android.util.Slog;

import android.util.Slog;

import android.util.SparseIntArray;

import android.util.SparseIntArray;

import android.view.KeyEvent;

import android.view.KeyEvent;
@@ -6379,6 +6380,12 @@ public class AudioService extends IAudioService.Stub 
    protected void dump(FileDescriptor fd, PrintWriter pw, String[] args) {

    protected void dump(FileDescriptor fd, PrintWriter pw, String[] args) {

        if (!DumpUtils.checkDumpPermission(mContext, TAG, pw)) return;

        if (!DumpUtils.checkDumpPermission(mContext, TAG, pw)) return;





        if (mAudioHandler != null) {

            pw.println("\nMessage handler (watch for unhandled messages):");

            mAudioHandler.dump(new PrintWriterPrinter(pw), "  ");

        } else {

            pw.println("\nMessage handler is null");

        }

        mMediaFocusControl.dump(pw);

        mMediaFocusControl.dump(pw);

        dumpStreamStates(pw);

        dumpStreamStates(pw);

        dumpRingerMode(pw);

        dumpRingerMode(pw);