Title: [122614] trunk/Source/WebCore
Revision
122614
Author
hara...@chromium.org
Date
2012-07-13 12:05:21 -0700 (Fri, 13 Jul 2012)

Log Message

[V8] String wrappers should be marked Independent
https://bugs.webkit.org/show_bug.cgi?id=91251

Reviewed by Adam Barth.

Currently V8 String wrappers are not marked Independent.
By marking them Independent, they can be reclaimed by the scavenger GC.

I tried to find some cases where this change reduces memory usage,
but couldn't due to sensitive behavior of GC.

No tests. No change in behavior.

* bindings/v8/V8Binding.cpp:
(WebCore::StringCache::v8ExternalStringSlow):

Modified Paths

Diff

Modified: trunk/Source/WebCore/ChangeLog (122613 => 122614)


--- trunk/Source/WebCore/ChangeLog	2012-07-13 19:00:01 UTC (rev 122613)
+++ trunk/Source/WebCore/ChangeLog	2012-07-13 19:05:21 UTC (rev 122614)
@@ -1,3 +1,21 @@
+2012-07-13  Kentaro Hara  <hara...@chromium.org>
+
+        [V8] String wrappers should be marked Independent
+        https://bugs.webkit.org/show_bug.cgi?id=91251
+
+        Reviewed by Adam Barth.
+
+        Currently V8 String wrappers are not marked Independent.
+        By marking them Independent, they can be reclaimed by the scavenger GC.
+
+        I tried to find some cases where this change reduces memory usage,
+        but couldn't due to sensitive behavior of GC.
+
+        No tests. No change in behavior.
+
+        * bindings/v8/V8Binding.cpp:
+        (WebCore::StringCache::v8ExternalStringSlow):
+
 2012-07-13  Peter Beverloo  <pe...@chromium.org>
 
         [Chromium] Make the v8 i18n API dependency conditional for Android, disable strict aliasing

Modified: trunk/Source/WebCore/bindings/v8/V8Binding.cpp (122613 => 122614)


--- trunk/Source/WebCore/bindings/v8/V8Binding.cpp	2012-07-13 19:00:01 UTC (rev 122613)
+++ trunk/Source/WebCore/bindings/v8/V8Binding.cpp	2012-07-13 19:05:21 UTC (rev 122614)
@@ -493,6 +493,7 @@
         return newString;
 
     stringImpl->ref();
+    wrapper.MarkIndependent();
     wrapper.MakeWeak(stringImpl, cachedStringCallback);
     m_stringCache.set(stringImpl, *wrapper);
 
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