diff options
author | Steve Block <steveblock@google.com> | 2011-05-13 06:44:40 -0700 |
---|---|---|
committer | Android (Google) Code Review <android-gerrit@google.com> | 2011-05-13 06:44:40 -0700 |
commit | 08014c20784f3db5df3a89b73cce46037b77eb59 (patch) | |
tree | 47749210d31e19e6e2f64036fa8fae2ad693476f /Source/JavaScriptCore/wtf/ListRefPtr.h | |
parent | 860220379e56aeb66424861ad602b07ee22b4055 (diff) | |
parent | 4c3661f7918f8b3f139f824efb7855bedccb4c94 (diff) | |
download | external_webkit-08014c20784f3db5df3a89b73cce46037b77eb59.zip external_webkit-08014c20784f3db5df3a89b73cce46037b77eb59.tar.gz external_webkit-08014c20784f3db5df3a89b73cce46037b77eb59.tar.bz2 |
Merge changes Ide388898,Ic49f367c,I1158a808,Iacb6ca5d,I2100dd3a,I5c1abe54,Ib0ef9902,I31dbc523,I570314b3
* changes:
Merge WebKit at r75315: Update WebKit version
Merge WebKit at r75315: Add FrameLoaderClient PageCache stubs
Merge WebKit at r75315: Stub out AXObjectCache::remove()
Merge WebKit at r75315: Fix ImageBuffer
Merge WebKit at r75315: Fix PluginData::initPlugins()
Merge WebKit at r75315: Fix conflicts
Merge WebKit at r75315: Fix Makefiles
Merge WebKit at r75315: Move Android-specific WebCore files to Source
Merge WebKit at r75315: Initial merge by git.
Diffstat (limited to 'Source/JavaScriptCore/wtf/ListRefPtr.h')
-rw-r--r-- | Source/JavaScriptCore/wtf/ListRefPtr.h | 70 |
1 files changed, 70 insertions, 0 deletions
diff --git a/Source/JavaScriptCore/wtf/ListRefPtr.h b/Source/JavaScriptCore/wtf/ListRefPtr.h new file mode 100644 index 0000000..8bf6447 --- /dev/null +++ b/Source/JavaScriptCore/wtf/ListRefPtr.h @@ -0,0 +1,70 @@ +/* + * Copyright (C) 2005, 2006, 2008 Apple Inc. All rights reserved. + * + * This library is free software; you can redistribute it and/or + * modify it under the terms of the GNU Library General Public + * License as published by the Free Software Foundation; either + * version 2 of the License, or (at your option) any later version. + * + * This library is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU + * Library General Public License for more details. + * + * You should have received a copy of the GNU Library General Public License + * along with this library; see the file COPYING.LIB. If not, write to + * the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor, + * Boston, MA 02110-1301, USA. + * + */ + +#ifndef WTF_ListRefPtr_h +#define WTF_ListRefPtr_h + +#include <wtf/RefPtr.h> + +namespace WTF { + + // Specialized version of RefPtr desgined for use in singly-linked lists. + // Derefs the list iteratively to avoid recursive derefing that can overflow the stack. + template <typename T> class ListRefPtr : public RefPtr<T> { + public: + ListRefPtr() : RefPtr<T>() {} + ListRefPtr(T* ptr) : RefPtr<T>(ptr) {} + ListRefPtr(const RefPtr<T>& o) : RefPtr<T>(o) {} + // see comment in PassRefPtr.h for why this takes const reference + template <typename U> ListRefPtr(const PassRefPtr<U>& o) : RefPtr<T>(o) {} + + ~ListRefPtr(); + + ListRefPtr& operator=(T* optr) { RefPtr<T>::operator=(optr); return *this; } + ListRefPtr& operator=(const RefPtr<T>& o) { RefPtr<T>::operator=(o); return *this; } + ListRefPtr& operator=(const PassRefPtr<T>& o) { RefPtr<T>::operator=(o); return *this; } + template <typename U> ListRefPtr& operator=(const RefPtr<U>& o) { RefPtr<T>::operator=(o); return *this; } + template <typename U> ListRefPtr& operator=(const PassRefPtr<U>& o) { RefPtr<T>::operator=(o); return *this; } + }; + + // Remove inline for winscw compiler to prevent the compiler agressively resolving + // T::ref() in RefPtr<T>'s copy constructor. The bug is reported at: + // https://xdabug001.ext.nokia.com/bugzilla/show_bug.cgi?id=9812. + template <typename T> +#if !COMPILER(WINSCW) + inline +#endif + ListRefPtr<T>::~ListRefPtr() + { + RefPtr<T> reaper = this->release(); + while (reaper && reaper->hasOneRef()) + reaper = reaper->releaseNext(); // implicitly protects reaper->next, then derefs reaper + } + + template <typename T> inline T* getPtr(const ListRefPtr<T>& p) + { + return p.get(); + } + +} // namespace WTF + +using WTF::ListRefPtr; + +#endif // WTF_ListRefPtr_h |