Title: [113673] trunk/Source/WebCore
Revision
113673
Author
[email protected]
Date
2012-04-09 21:05:34 -0700 (Mon, 09 Apr 2012)

Log Message

Fixed ordering of deleting CCInputHandler and CCLayerTreeHostImpl in layerTreeHostClosedOnImplThread
https://bugs.webkit.org/show_bug.cgi?id=83488

Patch by Min Qin <[email protected]> on 2012-04-09
Reviewed by James Robinson.

CCInputHandler(WebCompositorInputHandlerImpl) has a pointer to CCLayerTreeHostImpl.
So we should delete CCInputHandler earlier as otherwise that pointer could get misused after LayerTreeHostImpl is deleted.
Just fixing a potential NPE error, no behavior change.

* platform/graphics/chromium/cc/CCThreadProxy.cpp:
(WebCore::CCThreadProxy::layerTreeHostClosedOnImplThread):

Modified Paths

Diff

Modified: trunk/Source/WebCore/ChangeLog (113672 => 113673)


--- trunk/Source/WebCore/ChangeLog	2012-04-10 03:59:51 UTC (rev 113672)
+++ trunk/Source/WebCore/ChangeLog	2012-04-10 04:05:34 UTC (rev 113673)
@@ -1,3 +1,17 @@
+2012-04-09  Min Qin  <[email protected]>
+
+        Fixed ordering of deleting CCInputHandler and CCLayerTreeHostImpl in layerTreeHostClosedOnImplThread
+        https://bugs.webkit.org/show_bug.cgi?id=83488
+
+        Reviewed by James Robinson.
+
+        CCInputHandler(WebCompositorInputHandlerImpl) has a pointer to CCLayerTreeHostImpl.
+        So we should delete CCInputHandler earlier as otherwise that pointer could get misused after LayerTreeHostImpl is deleted.
+        Just fixing a potential NPE error, no behavior change.
+
+        * platform/graphics/chromium/cc/CCThreadProxy.cpp:
+        (WebCore::CCThreadProxy::layerTreeHostClosedOnImplThread):
+
 2012-04-09  Sheriff Bot  <[email protected]>
 
         Unreviewed, rolling out r113656.

Modified: trunk/Source/WebCore/platform/graphics/chromium/cc/CCThreadProxy.cpp (113672 => 113673)


--- trunk/Source/WebCore/platform/graphics/chromium/cc/CCThreadProxy.cpp	2012-04-10 03:59:51 UTC (rev 113672)
+++ trunk/Source/WebCore/platform/graphics/chromium/cc/CCThreadProxy.cpp	2012-04-10 04:05:34 UTC (rev 113673)
@@ -732,8 +732,8 @@
     TRACE_EVENT("CCThreadProxy::layerTreeHostClosedOnImplThread", this, 0);
     ASSERT(isImplThread());
     m_layerTreeHost->deleteContentsTexturesOnImplThread(m_layerTreeHostImpl->contentsTextureAllocator());
+    m_inputHandlerOnImplThread.clear();
     m_layerTreeHostImpl.clear();
-    m_inputHandlerOnImplThread.clear();
     m_schedulerOnImplThread.clear();
     completion->signal();
 }
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