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-rw-r--r--WebCore/platform/TreeShared.h146
1 files changed, 0 insertions, 146 deletions
diff --git a/WebCore/platform/TreeShared.h b/WebCore/platform/TreeShared.h
deleted file mode 100644
index 9d9ac1f..0000000
--- a/WebCore/platform/TreeShared.h
+++ /dev/null
@@ -1,146 +0,0 @@
-/*
- * Copyright (C) 2006, 2007, 2009, 2010 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 TreeShared_h
-#define TreeShared_h
-
-#include <wtf/Assertions.h>
-#include <wtf/Noncopyable.h>
-#include <wtf/Threading.h>
-
-namespace WebCore {
-
-#ifndef NDEBUG
-template<typename T> class TreeShared;
-template<typename T> void adopted(TreeShared<T>*);
-#endif
-
-template<typename T> class TreeShared : public Noncopyable {
-public:
- TreeShared()
- : m_refCount(1)
- , m_parent(0)
-#ifndef NDEBUG
- , m_adoptionIsRequired(true)
-#endif
- {
- ASSERT(isMainThread());
-#ifndef NDEBUG
- m_deletionHasBegun = false;
- m_inRemovedLastRefFunction = false;
-#endif
- }
- virtual ~TreeShared()
- {
- ASSERT(isMainThread());
- ASSERT(!m_refCount);
- ASSERT(m_deletionHasBegun);
- ASSERT(!m_adoptionIsRequired);
- }
-
- void ref()
- {
- ASSERT(isMainThread());
- ASSERT(!m_deletionHasBegun);
- ASSERT(!m_inRemovedLastRefFunction);
- ASSERT(!m_adoptionIsRequired);
- ++m_refCount;
- }
-
- void deref()
- {
- ASSERT(isMainThread());
- ASSERT(m_refCount >= 0);
- ASSERT(!m_deletionHasBegun);
- ASSERT(!m_inRemovedLastRefFunction);
- ASSERT(!m_adoptionIsRequired);
- if (--m_refCount <= 0 && !m_parent) {
-#ifndef NDEBUG
- m_inRemovedLastRefFunction = true;
-#endif
- removedLastRef();
- }
- }
-
- bool hasOneRef() const
- {
- ASSERT(!m_deletionHasBegun);
- ASSERT(!m_inRemovedLastRefFunction);
- return m_refCount == 1;
- }
-
- int refCount() const
- {
- return m_refCount;
- }
-
- void setParent(T* parent)
- {
- ASSERT(isMainThread());
- m_parent = parent;
- }
-
- T* parent() const
- {
- ASSERT(isMainThread());
- return m_parent;
- }
-
-#ifndef NDEBUG
- bool m_deletionHasBegun;
- bool m_inRemovedLastRefFunction;
-#endif
-
-private:
-#ifndef NDEBUG
- friend void adopted<>(TreeShared<T>*);
-#endif
-
- virtual void removedLastRef()
- {
-#ifndef NDEBUG
- m_deletionHasBegun = true;
-#endif
- delete this;
- }
-
- int m_refCount;
- T* m_parent;
-#ifndef NDEBUG
- bool m_adoptionIsRequired;
-#endif
-};
-
-#ifndef NDEBUG
-
-template<typename T> inline void adopted(TreeShared<T>* object)
-{
- if (!object)
- return;
- ASSERT(!object->m_deletionHasBegun);
- ASSERT(!object->m_inRemovedLastRefFunction);
- object->m_adoptionIsRequired = false;
-}
-
-#endif
-
-}
-
-#endif // TreeShared.h