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Commit a33291e6 authored by Chris Ye's avatar Chris Ye
Browse files

Add event log for view_enqueue_input_event. 

Log out the input events to help debugging unresponsive UI issues.

Examples:
06-15 19:00:53.725  2272  2272 I view_enqueue_input_event: [Motion - Cancel,NavigationBar0]
06-16 02:28:35.318  3650  3650 I view_enqueue_input_event: [Key - Cancel,com.google.android.apps.nexuslauncher/com.google.android.apps.nexuslauncher.NexusLauncherActivity]

Bug: 154660150
Test: Manual test of swiping screen and watch event log.

Change-Id: I08c6be21ec01d9da2c67e2b59c15ba780de227be
parent 67a1b20b

core/java/android/view/EventLogTags.logtags

0 → 100644
+49 −0
Original line number Diff line number Diff line 
# See system/core/logcat/event.logtags for a description of the format of this file.



option java_package android.view



# The entries in this file map a sparse set of log tag numbers to tag names.

# This is installed on the device, in /system/etc, and parsed by logcat.

#

# Tag numbers are decimal integers, from 0 to 2^31.  (Let's leave the

# negative values alone for now.)

#

# Tag names are one or more ASCII letters and numbers or underscores, i.e.

# "[A-Z][a-z][0-9]_".  Do not include spaces or punctuation (the former

# impacts log readability, the latter makes regex searches more annoying).

#

# Tag numbers and names are separated by whitespace.  Blank lines and lines

# starting with '#' are ignored.

#

# Optionally, after the tag names can be put a description for the value(s)

# of the tag. Description are in the format

#    (<name>|data type[|data unit])

# Multiple values are separated by commas.

#

# The data type is a number from the following values:

# 1: int

# 2: long

# 3: string

# 4: list

#

# The data unit is a number taken from the following list:

# 1: Number of objects

# 2: Number of bytes

# 3: Number of milliseconds

# 4: Number of allocations

# 5: Id

# 6: Percent

# Default value for data of type int/long is 2 (bytes).

#

# See system/core/logcat/event.logtags for the master copy of the tags.



# 62000 - 62199 reserved for inputflinger



# ---------------------------

# android.view

# ---------------------------

# Enqueue Input Event

62002 view_enqueue_input_event (eventType|3),(action|3)



# NOTE - the range 1000000-2000000 is reserved for partners and others who

# want to define their own log tags without conflicting with the core platform.
 
 No newline at end of file

core/java/android/view/ViewRootImpl.java

+14 −0
Original line number Diff line number Diff line
@@ -115,6 +115,7 @@ import android.os.UserHandle; 
import android.sysprop.DisplayProperties;

import android.util.AndroidRuntimeException;

import android.util.DisplayMetrics;

import android.util.EventLog;

import android.util.Log;

import android.util.LongArray;

import android.util.MergedConfiguration;
@@ -7946,6 +7947,19 @@ public final class ViewRootImpl implements ViewParent, 
            InputEventReceiver receiver, int flags, boolean processImmediately) {

        QueuedInputEvent q = obtainQueuedInputEvent(event, receiver, flags);



        if (event instanceof MotionEvent) {

            MotionEvent me = (MotionEvent) event;

            if (me.getAction() == MotionEvent.ACTION_CANCEL) {

                EventLog.writeEvent(EventLogTags.VIEW_ENQUEUE_INPUT_EVENT, "Motion - Cancel",

                        getTitle());

            }

        } else if (event instanceof KeyEvent) {

            KeyEvent ke = (KeyEvent) event;

            if (ke.isCanceled()) {

                EventLog.writeEvent(EventLogTags.VIEW_ENQUEUE_INPUT_EVENT, "Key - Cancel",

                        getTitle());

            }

        }

        // Always enqueue the input event in order, regardless of its time stamp.

        // We do this because the application or the IME may inject key events

        // in response to touch events and we want to ensure that the injected keys