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Diffstat (limited to 'src/3rdparty/javascriptcore/JavaScriptCore/runtime/WeakGCPtr.h')
-rw-r--r-- | src/3rdparty/javascriptcore/JavaScriptCore/runtime/WeakGCPtr.h | 128 |
1 files changed, 0 insertions, 128 deletions
diff --git a/src/3rdparty/javascriptcore/JavaScriptCore/runtime/WeakGCPtr.h b/src/3rdparty/javascriptcore/JavaScriptCore/runtime/WeakGCPtr.h deleted file mode 100644 index 8653721..0000000 --- a/src/3rdparty/javascriptcore/JavaScriptCore/runtime/WeakGCPtr.h +++ /dev/null @@ -1,128 +0,0 @@ -/* - * Copyright (C) 2009 Apple Inc. All rights reserved. - * - * Redistribution and use in source and binary forms, with or without - * modification, are permitted provided that the following conditions - * are met: - * 1. Redistributions of source code must retain the above copyright - * notice, this list of conditions and the following disclaimer. - * 2. Redistributions in binary form must reproduce the above copyright - * notice, this list of conditions and the following disclaimer in the - * documentation and/or other materials provided with the distribution. - * - * THIS SOFTWARE IS PROVIDED BY APPLE INC. AND ITS CONTRIBUTORS ``AS IS'' - * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, - * THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR - * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL APPLE INC. OR ITS CONTRIBUTORS - * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR - * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF - * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS - * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN - * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) - * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF - * THE POSSIBILITY OF SUCH DAMAGE. - */ - -#ifndef WeakGCPtr_h -#define WeakGCPtr_h - -#include "Collector.h" -#include <wtf/Noncopyable.h> - -namespace JSC { - -// A smart pointer whose get() function returns 0 for cells awaiting destruction. -template <typename T> class WeakGCPtr : Noncopyable { -public: - WeakGCPtr() : m_ptr(0) { } - WeakGCPtr(T* ptr) { assign(ptr); } - - T* get() const - { - if (!m_ptr || !Heap::isCellMarked(m_ptr)) - return 0; - return m_ptr; - } - - void clear() { m_ptr = 0; } - - T& operator*() const { return *get(); } - T* operator->() const { return get(); } - - bool operator!() const { return !get(); } - - // This conversion operator allows implicit conversion to bool but not to other integer types. -#if COMPILER(WINSCW) - operator bool() const { return m_ptr; } -#else - typedef T* WeakGCPtr::*UnspecifiedBoolType; - operator UnspecifiedBoolType() const { return get() ? &WeakGCPtr::m_ptr : 0; } -#endif - - WeakGCPtr& operator=(T*); - -private: - void assign(T* ptr) - { - if (ptr) - Heap::markCell(ptr); - m_ptr = ptr; - } - - T* m_ptr; -}; - -template <typename T> inline WeakGCPtr<T>& WeakGCPtr<T>::operator=(T* optr) -{ - assign(optr); - return *this; -} - -template <typename T, typename U> inline bool operator==(const WeakGCPtr<T>& a, const WeakGCPtr<U>& b) -{ - return a.get() == b.get(); -} - -template <typename T, typename U> inline bool operator==(const WeakGCPtr<T>& a, U* b) -{ - return a.get() == b; -} - -template <typename T, typename U> inline bool operator==(T* a, const WeakGCPtr<U>& b) -{ - return a == b.get(); -} - -template <typename T, typename U> inline bool operator!=(const WeakGCPtr<T>& a, const WeakGCPtr<U>& b) -{ - return a.get() != b.get(); -} - -template <typename T, typename U> inline bool operator!=(const WeakGCPtr<T>& a, U* b) -{ - return a.get() != b; -} - -template <typename T, typename U> inline bool operator!=(T* a, const WeakGCPtr<U>& b) -{ - return a != b.get(); -} - -template <typename T, typename U> inline WeakGCPtr<T> static_pointer_cast(const WeakGCPtr<U>& p) -{ - return WeakGCPtr<T>(static_cast<T*>(p.get())); -} - -template <typename T, typename U> inline WeakGCPtr<T> const_pointer_cast(const WeakGCPtr<U>& p) -{ - return WeakGCPtr<T>(const_cast<T*>(p.get())); -} - -template <typename T> inline T* getPtr(const WeakGCPtr<T>& p) -{ - return p.get(); -} - -} // namespace JSC - -#endif // WeakGCPtr_h |