2008-12-12 Kai Brüning <kai@granus.net>
Reviewed and tweaked by Darin Adler.
- fix https://bugs.webkit.org/show_bug.cgi?id=18205
DOMNode objects are garbage collected although there are strong references
<rdar://problem/6441200>
Fixes resurrection bug for wrapper objects by using an NSMapTable with zeroing weak
memory for the wrapper reference for DOMWrapperCache (DOMInternal.mm),
JSWrapperCache (WebScriptObject.mm) and wrapperCache (DOMRGBColor.mm).
BUILDING_ON_TIGER is used to create a Leopard-only NSMapTable or an old-style
procedural map table for Tiger systems.
No regression tests yet since we don't currently run any tests in GC mode.
* bindings/objc/DOMInternal.h: added WebCore::createWrapperCache for use by all three caches
* bindings/objc/DOMInternal.mm:
(WebCore::createWrapperCache): Contains the compile-time check for map table creation
(WebCore::getDOMWrapper): HashMap -> NSMapTable
(WebCore::addDOMWrapper): ditto
(WebCore::removeDOMWrapper): ditto
* bindings/objc/DOMObject.mm: removed [DOMObject finalize]
* bindings/objc/DOMRGBColor.mm: removed [DOMRGBColor finalize]
(WebCore::getWrapperForRGB): CFMutableDictionaryRef -> NSMapTable
(WebCore::setWrapperForRGB): ditto
(WebCore::removeWrapperForRGB): ditto
* bindings/objc/WebScriptObject.mm:
(WebCore::getJSWrapper): HashMap -> NSMapTable
(WebCore::addJSWrapper): ditto
(WebCore::removeJSWrapper): ditto
(-[WebScriptObject finalize]): removed call of removeJSWrapper()
git-svn-id: http://svn.webkit.org/repository/webkit/trunk@39246 268f45cc-cd09-0410-ab3c-d52691b4dbfc
6 files changed
