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Fix memory leak due to not removing ended or cancelled tasks

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While the tracker session ends abnormaly, we should also remove the task
which is kept by InteractionJankMonitor, or a memory leak happens.

Bug: 184651704
Test: atest FrameworksCoreTests:InteractionJankMonitorTest
Test: atest FrameworksCoreTests:FrameTrackerTest
Change-Id: I56f7759ef39d34cedc795042d3210d9be375cf77
This commit is contained in:
Ahan Wu
2021-04-07 02:39:31 -08:00
parent 245ce41e59
commit eae7d291f9
2 changed files with 50 additions and 12 deletions
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13
core/java/com/android/internal/jank/FrameTracker.java
View File

@@ -27,6 +27,7 @@ import static android.view.SurfaceControl.JankData.SURFACE_FLINGER_SCHEDULING;
import static com.android.internal.jank.InteractionJankMonitor.ACTION_METRICS_LOGGED;
import static com.android.internal.jank.InteractionJankMonitor.ACTION_SESSION_BEGIN;
import static com.android.internal.jank.InteractionJankMonitor.ACTION_SESSION_CANCEL;
import static com.android.internal.jank.InteractionJankMonitor.ACTION_SESSION_END;
import android.annotation.IntDef;
import android.annotation.NonNull;
@@ -215,7 +216,7 @@ public class FrameTracker extends SurfaceControl.OnJankDataListener
mSurfaceControlWrapper.addJankStatsListener(this, mSurfaceControl);
}
if (mListener != null) {
mListener.onNotifyCujEvents(mSession, ACTION_SESSION_BEGIN);
mListener.onCujEvents(mSession, ACTION_SESSION_BEGIN);
}
}
@@ -240,7 +241,9 @@ public class FrameTracker extends SurfaceControl.OnJankDataListener
}
Trace.endAsyncSection(mSession.getName(), (int) mBeginVsyncId);
mSession.setReason(reason);
InteractionJankMonitor.getInstance().removeTimeout(mSession.getCuj());
if (mListener != null) {
mListener.onCujEvents(mSession, ACTION_SESSION_END);
}
}
// We don't remove observer here,
// will remove it when all the frame metrics in this duration are called back.
@@ -269,7 +272,7 @@ public class FrameTracker extends SurfaceControl.OnJankDataListener
// Notify the listener the session has been cancelled.
// We don't notify the listeners if the session never begun.
if (mListener != null) {
mListener.onNotifyCujEvents(mSession, ACTION_SESSION_CANCEL);
mListener.onCujEvents(mSession, ACTION_SESSION_CANCEL);
}
}
@@ -445,7 +448,7 @@ public class FrameTracker extends SurfaceControl.OnJankDataListener
maxFrameTimeNanos,
missedSfFramesCounts);
if (mListener != null) {
mListener.onNotifyCujEvents(mSession, ACTION_METRICS_LOGGED);
mListener.onCujEvents(mSession, ACTION_METRICS_LOGGED);
}
}
if (DEBUG) {
@@ -587,6 +590,6 @@ public class FrameTracker extends SurfaceControl.OnJankDataListener
* @param session the CUJ session
* @param action the specific action
*/
void onNotifyCujEvents(Session session, String action);
void onCujEvents(Session session, String action);
}
}

49
core/java/com/android/internal/jank/InteractionJankMonitor.java
View File

@@ -19,7 +19,9 @@ package com.android.internal.jank;
import static android.content.Intent.FLAG_RECEIVER_REGISTERED_ONLY;
import static com.android.internal.jank.FrameTracker.ChoreographerWrapper;
import static com.android.internal.jank.FrameTracker.REASON_CANCEL_NORMAL;
import static com.android.internal.jank.FrameTracker.REASON_CANCEL_NOT_BEGUN;
import static com.android.internal.jank.FrameTracker.REASON_END_NORMAL;
import static com.android.internal.jank.FrameTracker.SurfaceControlWrapper;
import static com.android.internal.util.FrameworkStatsLog.UIINTERACTION_FRAME_INFO_REPORTED__INTERACTION_TYPE__LAUNCHER_ALL_APPS_SCROLL;
import static com.android.internal.util.FrameworkStatsLog.UIINTERACTION_FRAME_INFO_REPORTED__INTERACTION_TYPE__LAUNCHER_APP_CLOSE_TO_HOME;
@@ -100,6 +102,7 @@ public class InteractionJankMonitor {
private static final int DEFAULT_TRACE_THRESHOLD_FRAME_TIME_MILLIS = 64;
public static final String ACTION_SESSION_BEGIN = ACTION_PREFIX + ".ACTION_SESSION_BEGIN";
public static final String ACTION_SESSION_END = ACTION_PREFIX + ".ACTION_SESSION_END";
public static final String ACTION_SESSION_CANCEL = ACTION_PREFIX + ".ACTION_SESSION_CANCEL";
public static final String ACTION_METRICS_LOGGED = ACTION_PREFIX + ".ACTION_METRICS_LOGGED";
public static final String BUNDLE_KEY_CUJ_NAME = ACTION_PREFIX + ".CUJ_NAME";
@@ -275,10 +278,7 @@ public class InteractionJankMonitor {
public FrameTracker createFrameTracker(View v, Session session) {
final Context c = v.getContext().getApplicationContext();
synchronized (this) {
boolean needListener = SystemProperties.getBoolean(PROP_NOTIFY_CUJ_EVENT, false);
FrameTrackerListener eventsListener =
!needListener ? null : (s, act) -> notifyEvents(c, act, s);
FrameTrackerListener eventsListener = (s, act) -> handleCujEvents(c, act, s);
return new FrameTracker(session, mWorker.getThreadHandler(),
new ThreadedRendererWrapper(v.getThreadedRenderer()),
new ViewRootWrapper(v.getViewRootImpl()), new SurfaceControlWrapper(),
@@ -287,6 +287,28 @@ public class InteractionJankMonitor {
}
}
private void handleCujEvents(Context context, String action, Session session) {
// Clear the running and timeout tasks if the end / cancel was fired within the tracker.
// Or we might have memory leaks.
if (needRemoveTasks(action, session)) {
removeTimeout(session.getCuj());
removeTracker(session.getCuj());
}
// Notify the receivers if necessary.
if (session.shouldNotify()) {
notifyEvents(context, action, session);
}
}
private boolean needRemoveTasks(String action, Session session) {
final boolean badEnd = action.equals(ACTION_SESSION_END)
&& session.getReason() != REASON_END_NORMAL;
final boolean badCancel = action.equals(ACTION_SESSION_CANCEL)
&& session.getReason() != REASON_CANCEL_NORMAL;
return badEnd || badCancel;
}
private void notifyEvents(Context context, String action, Session session) {
if (action.equals(ACTION_SESSION_CANCEL)
&& session.getReason() == REASON_CANCEL_NOT_BEGUN) {
@@ -299,7 +321,7 @@ public class InteractionJankMonitor {
context.sendBroadcast(intent);
}
void removeTimeout(@CujType int cujType) {
private void removeTimeout(@CujType int cujType) {
synchronized (this) {
Runnable timeout = mTimeoutActions.get(cujType);
if (timeout != null) {
@@ -371,7 +393,7 @@ public class InteractionJankMonitor {
// Skip this call since we haven't started a trace yet.
if (tracker == null) return false;
tracker.end(FrameTracker.REASON_END_NORMAL);
mRunningTrackers.remove(cujType);
removeTracker(cujType);
return true;
}
}
@@ -390,7 +412,7 @@ public class InteractionJankMonitor {
// Skip this call since we haven't started a trace yet.
if (tracker == null) return false;
tracker.cancel(FrameTracker.REASON_CANCEL_NORMAL);
mRunningTrackers.remove(cujType);
removeTracker(cujType);
return true;
}
}
@@ -401,6 +423,12 @@ public class InteractionJankMonitor {
}
}
private void removeTracker(@CujType int cuj) {
synchronized (this) {
mRunningTrackers.remove(cuj);
}
}
private void updateProperties(DeviceConfig.Properties properties) {
synchronized (this) {
mSamplingInterval = properties.getInt(SETTINGS_SAMPLING_INTERVAL_KEY,
@@ -516,9 +544,11 @@ public class InteractionJankMonitor {
private long mTimeStamp;
@FrameTracker.Reasons
private int mReason = FrameTracker.REASON_END_UNKNOWN;
private boolean mShouldNotify;
public Session(@CujType int cujType) {
mCujType = cujType;
mShouldNotify = SystemProperties.getBoolean(PROP_NOTIFY_CUJ_EVENT, false);
}
@CujType
@@ -558,5 +588,10 @@ public class InteractionJankMonitor {
public int getReason() {
return mReason;
}
/** Determine if should notify the receivers of cuj events */
public boolean shouldNotify() {
return mShouldNotify;
}
}
}