--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/JavaScriptCore/wtf/gobject/GOwnPtr.h	Fri Sep 17 09:02:29 2010 +0300
@@ -0,0 +1,149 @@
+/*
+ *  Copyright (C) 2006, 2007 Apple Inc. All rights reserved.
+ *  Copyright (C) 2008 Collabora Ltd.
+ *
+ *  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 GOwnPtr_h
+#define GOwnPtr_h
+
+#include <algorithm>
+#include <wtf/Assertions.h>
+#include <wtf/Noncopyable.h>
+
+// Forward delcarations at this point avoid the need to include GLib includes
+// in WTF headers.
+typedef struct _GError GError;
+typedef struct _GList GList;
+typedef struct _GCond GCond;
+typedef struct _GMutex GMutex;
+typedef struct _GPatternSpec GPatternSpec;
+typedef struct _GDir GDir;
+typedef struct _GHashTable GHashTable;
+typedef struct _GFile GFile;
+extern "C" void g_free(void*);
+
+namespace WTF {
+
+template <typename T> inline void freeOwnedGPtr(T* ptr);
+template<> void freeOwnedGPtr<GError>(GError*);
+template<> void freeOwnedGPtr<GList>(GList*);
+template<> void freeOwnedGPtr<GCond>(GCond*);
+template<> void freeOwnedGPtr<GMutex>(GMutex*);
+template<> void freeOwnedGPtr<GPatternSpec>(GPatternSpec*);
+template<> void freeOwnedGPtr<GDir>(GDir*);
+template<> void freeOwnedGPtr<GHashTable>(GHashTable*);
+template<> void freeOwnedGPtr<GFile>(GFile*);
+
+template <typename T> class GOwnPtr : public Noncopyable {
+public:
+    explicit GOwnPtr(T* ptr = 0) : m_ptr(ptr) { }
+    ~GOwnPtr() { freeOwnedGPtr(m_ptr); }
+
+    T* get() const { return m_ptr; }
+    T* release()
+    {
+        T* ptr = m_ptr;
+        m_ptr = 0;
+        return ptr;
+    }
+
+    T*& outPtr()
+    {
+        ASSERT(!m_ptr);
+        return m_ptr;
+    }
+
+    void set(T* ptr)
+    {
+        ASSERT(!ptr || m_ptr != ptr);
+        freeOwnedGPtr(m_ptr);
+        m_ptr = ptr;
+    }
+
+    void clear()
+    {
+        T* ptr = m_ptr;
+        m_ptr = 0;
+        freeOwnedGPtr(ptr);
+    }
+
+    T& operator*() const
+    {
+        ASSERT(m_ptr);
+        return *m_ptr;
+    }
+
+    T* operator->() const
+    {
+        ASSERT(m_ptr);
+        return m_ptr;
+    }
+
+    bool operator!() const { return !m_ptr; }
+
+    // This conversion operator allows implicit conversion to bool but not to other integer types.
+    typedef T* GOwnPtr::*UnspecifiedBoolType;
+    operator UnspecifiedBoolType() const { return m_ptr ? &GOwnPtr::m_ptr : 0; }
+
+    void swap(GOwnPtr& o) { std::swap(m_ptr, o.m_ptr); }
+
+private:
+    T* m_ptr;
+};
+
+template <typename T> inline void swap(GOwnPtr<T>& a, GOwnPtr<T>& b)
+{
+    a.swap(b);
+}
+
+template <typename T, typename U> inline bool operator==(const GOwnPtr<T>& a, U* b)
+{ 
+    return a.get() == b; 
+}
+
+template <typename T, typename U> inline bool operator==(T* a, const GOwnPtr<U>& b) 
+{
+    return a == b.get(); 
+}
+
+template <typename T, typename U> inline bool operator!=(const GOwnPtr<T>& a, U* b)
+{
+    return a.get() != b; 
+}
+
+template <typename T, typename U> inline bool operator!=(T* a, const GOwnPtr<U>& b)
+{ 
+    return a != b.get(); 
+}
+
+template <typename T> inline typename GOwnPtr<T>::PtrType getPtr(const GOwnPtr<T>& p)
+{
+    return p.get();
+}
+
+template <typename T> inline void freeOwnedGPtr(T* ptr)
+{
+    g_free(ptr);
+}
+
+} // namespace WTF
+
+using WTF::GOwnPtr;
+
+#endif // GOwnPtr_h