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author | Lars Knoll <lars.knoll@nokia.com> | 2009-03-23 09:18:55 (GMT) |
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committer | Simon Hausmann <simon.hausmann@nokia.com> | 2009-03-23 09:18:55 (GMT) |
commit | e5fcad302d86d316390c6b0f62759a067313e8a9 (patch) | |
tree | c2afbf6f1066b6ce261f14341cf6d310e5595bc1 /src/3rdparty/webkit/JavaScriptCore/runtime/Protect.h | |
download | Qt-e5fcad302d86d316390c6b0f62759a067313e8a9.zip Qt-e5fcad302d86d316390c6b0f62759a067313e8a9.tar.gz Qt-e5fcad302d86d316390c6b0f62759a067313e8a9.tar.bz2 |
Long live Qt 4.5!
Diffstat (limited to 'src/3rdparty/webkit/JavaScriptCore/runtime/Protect.h')
-rw-r--r-- | src/3rdparty/webkit/JavaScriptCore/runtime/Protect.h | 217 |
1 files changed, 217 insertions, 0 deletions
diff --git a/src/3rdparty/webkit/JavaScriptCore/runtime/Protect.h b/src/3rdparty/webkit/JavaScriptCore/runtime/Protect.h new file mode 100644 index 0000000..efbc4bb --- /dev/null +++ b/src/3rdparty/webkit/JavaScriptCore/runtime/Protect.h @@ -0,0 +1,217 @@ +/* + * Copyright (C) 2004, 2008, 2009 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 Protect_h +#define Protect_h + +#include "JSCell.h" +#include "Collector.h" + +namespace JSC { + + inline void gcProtect(JSCell* val) + { + Heap::heap(val)->protect(val); + } + + inline void gcUnprotect(JSCell* val) + { + Heap::heap(val)->unprotect(val); + } + + inline void gcProtectNullTolerant(JSCell* val) + { + if (val) + gcProtect(val); + } + + inline void gcUnprotectNullTolerant(JSCell* val) + { + if (val) + gcUnprotect(val); + } + + inline void gcProtect(JSValuePtr value) + { + if (!value || JSImmediate::isImmediate(value)) + return; + gcProtect(asCell(value)); + } + + inline void gcUnprotect(JSValuePtr value) + { + if (!value || JSImmediate::isImmediate(value)) + return; + gcUnprotect(asCell(value)); + } + + // FIXME: Share more code with RefPtr template? The only differences are the ref/deref operation + // and the implicit conversion to raw pointer + template <class T> class ProtectedPtr { + public: + ProtectedPtr() : m_ptr(0) {} + ProtectedPtr(T* ptr); + ProtectedPtr(const ProtectedPtr&); + ~ProtectedPtr(); + + template <class U> ProtectedPtr(const ProtectedPtr<U>&); + + T* get() const { return m_ptr; } + operator T*() const { return m_ptr; } + operator JSValuePtr() const { return JSValuePtr(m_ptr); } + T* operator->() const { return m_ptr; } + + operator bool() const { return m_ptr; } + bool operator!() const { return !m_ptr; } + + ProtectedPtr& operator=(const ProtectedPtr&); + ProtectedPtr& operator=(T*); + + private: + T* m_ptr; + }; + + class ProtectedJSValuePtr { + public: + ProtectedJSValuePtr() {} + ProtectedJSValuePtr(JSValuePtr value); + ProtectedJSValuePtr(const ProtectedJSValuePtr&); + ~ProtectedJSValuePtr(); + + template <class U> ProtectedJSValuePtr(const ProtectedPtr<U>&); + + JSValuePtr get() const { return m_value; } + operator JSValuePtr() const { return m_value; } + JSValuePtr operator->() const { return m_value; } + + operator bool() const { return m_value; } + bool operator!() const { return !m_value; } + + ProtectedJSValuePtr& operator=(const ProtectedJSValuePtr&); + ProtectedJSValuePtr& operator=(JSValuePtr); + + private: + JSValuePtr m_value; + }; + + template <class T> inline ProtectedPtr<T>::ProtectedPtr(T* ptr) + : m_ptr(ptr) + { + gcProtectNullTolerant(m_ptr); + } + + template <class T> inline ProtectedPtr<T>::ProtectedPtr(const ProtectedPtr& o) + : m_ptr(o.get()) + { + gcProtectNullTolerant(m_ptr); + } + + template <class T> inline ProtectedPtr<T>::~ProtectedPtr() + { + gcUnprotectNullTolerant(m_ptr); + } + + template <class T> template <class U> inline ProtectedPtr<T>::ProtectedPtr(const ProtectedPtr<U>& o) + : m_ptr(o.get()) + { + gcProtectNullTolerant(m_ptr); + } + + template <class T> inline ProtectedPtr<T>& ProtectedPtr<T>::operator=(const ProtectedPtr<T>& o) + { + T* optr = o.m_ptr; + gcProtectNullTolerant(optr); + gcUnprotectNullTolerant(m_ptr); + m_ptr = optr; + return *this; + } + + template <class T> inline ProtectedPtr<T>& ProtectedPtr<T>::operator=(T* optr) + { + gcProtectNullTolerant(optr); + gcUnprotectNullTolerant(m_ptr); + m_ptr = optr; + return *this; + } + + inline ProtectedJSValuePtr::ProtectedJSValuePtr(JSValuePtr value) + : m_value(value) + { + gcProtect(m_value); + } + + inline ProtectedJSValuePtr::ProtectedJSValuePtr(const ProtectedJSValuePtr& o) + : m_value(o.get()) + { + gcProtect(m_value); + } + + inline ProtectedJSValuePtr::~ProtectedJSValuePtr() + { + gcUnprotect(m_value); + } + + template <class U> ProtectedJSValuePtr::ProtectedJSValuePtr(const ProtectedPtr<U>& o) + : m_value(o.get()) + { + gcProtect(m_value); + } + + inline ProtectedJSValuePtr& ProtectedJSValuePtr::operator=(const ProtectedJSValuePtr& o) + { + JSValuePtr ovalue = o.m_value; + gcProtect(ovalue); + gcUnprotect(m_value); + m_value = ovalue; + return *this; + } + + inline ProtectedJSValuePtr& ProtectedJSValuePtr::operator=(JSValuePtr ovalue) + { + gcProtect(ovalue); + gcUnprotect(m_value); + m_value = ovalue; + return *this; + } + + template <class T> inline bool operator==(const ProtectedPtr<T>& a, const ProtectedPtr<T>& b) { return a.get() == b.get(); } + template <class T> inline bool operator==(const ProtectedPtr<T>& a, const T* b) { return a.get() == b; } + template <class T> inline bool operator==(const T* a, const ProtectedPtr<T>& b) { return a == b.get(); } + + template <class T> inline bool operator!=(const ProtectedPtr<T>& a, const ProtectedPtr<T>& b) { return a.get() != b.get(); } + template <class T> inline bool operator!=(const ProtectedPtr<T>& a, const T* b) { return a.get() != b; } + template <class T> inline bool operator!=(const T* a, const ProtectedPtr<T>& b) { return a != b.get(); } + + inline bool operator==(const ProtectedJSValuePtr& a, const ProtectedJSValuePtr& b) { return a.get() == b.get(); } + inline bool operator==(const ProtectedJSValuePtr& a, const JSValuePtr b) { return a.get() == b; } + template <class T> inline bool operator==(const ProtectedJSValuePtr& a, const ProtectedPtr<T>& b) { return a.get() == JSValuePtr(b.get()); } + inline bool operator==(const JSValuePtr a, const ProtectedJSValuePtr& b) { return a == b.get(); } + template <class T> inline bool operator==(const ProtectedPtr<T>& a, const ProtectedJSValuePtr& b) { return JSValuePtr(a.get()) == b.get(); } + + inline bool operator!=(const ProtectedJSValuePtr& a, const ProtectedJSValuePtr& b) { return a.get() != b.get(); } + inline bool operator!=(const ProtectedJSValuePtr& a, const JSValuePtr b) { return a.get() != b; } + template <class T> inline bool operator!=(const ProtectedJSValuePtr& a, const ProtectedPtr<T>& b) { return a.get() != JSValuePtr(b.get()); } + inline bool operator!=(const JSValuePtr a, const ProtectedJSValuePtr& b) { return a != b.get(); } + template <class T> inline bool operator!=(const ProtectedPtr<T>& a, const ProtectedJSValuePtr& b) { return JSValuePtr(a.get()) != b.get(); } + +} // namespace JSC + +#endif // Protect_h |