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| 1 /* | 1 /* |
| 2 * Copyright (C) 2005, 2006, 2007, 2008, 2009, 2010, 2013 Apple Inc. All rights
reserved. | 2 * Copyright (C) 2005, 2006, 2007, 2008, 2009, 2010, 2013 Apple Inc. All rights
reserved. |
| 3 * | 3 * |
| 4 * This library is free software; you can redistribute it and/or | 4 * This library is free software; you can redistribute it and/or |
| 5 * modify it under the terms of the GNU Library General Public | 5 * modify it under the terms of the GNU Library General Public |
| 6 * License as published by the Free Software Foundation; either | 6 * License as published by the Free Software Foundation; either |
| 7 * version 2 of the License, or (at your option) any later version. | 7 * version 2 of the License, or (at your option) any later version. |
| 8 * | 8 * |
| 9 * This library is distributed in the hope that it will be useful, | 9 * This library is distributed in the hope that it will be useful, |
| 10 * but WITHOUT ANY WARRANTY; without even the implied warranty of | 10 * but WITHOUT ANY WARRANTY; without even the implied warranty of |
| 11 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU | 11 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU |
| 12 * Library General Public License for more details. | 12 * Library General Public License for more details. |
| 13 * | 13 * |
| 14 * You should have received a copy of the GNU Library General Public License | 14 * You should have received a copy of the GNU Library General Public License |
| 15 * along with this library; see the file COPYING.LIB. If not, write to | 15 * along with this library; see the file COPYING.LIB. If not, write to |
| 16 * the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor, | 16 * the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor, |
| 17 * Boston, MA 02110-1301, USA. | 17 * Boston, MA 02110-1301, USA. |
| 18 * | 18 * |
| 19 */ | 19 */ |
| 20 | 20 |
| 21 // RefPtr and PassRefPtr are documented at http://webkit.org/coding/RefPtr.html | 21 // RefPtr and PassRefPtr are documented at http://webkit.org/coding/RefPtr.html |
| 22 | 22 |
| 23 #ifndef WTF_RefPtr_h | 23 #ifndef WTF_RefPtr_h |
| 24 #define WTF_RefPtr_h | 24 #define WTF_RefPtr_h |
| 25 | 25 |
| 26 #include "wtf/Allocator.h" | 26 #include "wtf/Allocator.h" |
| 27 #include "wtf/HashTableDeletedValueType.h" | 27 #include "wtf/HashTableDeletedValueType.h" |
| 28 #include "wtf/PassRefPtr.h" | 28 #include "wtf/PassRefPtr.h" |
| 29 #include "wtf/RawPtr.h" | |
| 30 #include <algorithm> | 29 #include <algorithm> |
| 31 #include <utility> | 30 #include <utility> |
| 32 | 31 |
| 33 namespace WTF { | 32 namespace WTF { |
| 34 | 33 |
| 35 template <typename T> class PassRefPtr; | 34 template <typename T> class PassRefPtr; |
| 36 template <typename T> class RefPtrValuePeeker; | 35 template <typename T> class RefPtrValuePeeker; |
| 37 | 36 |
| 38 template <typename T> class RefPtr { | 37 template <typename T> class RefPtr { |
| 39 USING_FAST_MALLOC(RefPtr); | 38 USING_FAST_MALLOC(RefPtr); |
| 40 public: | 39 public: |
| 41 ALWAYS_INLINE RefPtr() : m_ptr(nullptr) {} | 40 ALWAYS_INLINE RefPtr() : m_ptr(nullptr) {} |
| 42 ALWAYS_INLINE RefPtr(std::nullptr_t) : m_ptr(nullptr) {} | 41 ALWAYS_INLINE RefPtr(std::nullptr_t) : m_ptr(nullptr) {} |
| 43 ALWAYS_INLINE RefPtr(T* ptr) : m_ptr(ptr) { refIfNotNull(ptr); } | 42 ALWAYS_INLINE RefPtr(T* ptr) : m_ptr(ptr) { refIfNotNull(ptr); } |
| 44 template <typename U> RefPtr(const RawPtr<U>& ptr, EnsurePtrConvertibleArgDe
cl(U, T)) : m_ptr(ptr.get()) { refIfNotNull(m_ptr); } | |
| 45 ALWAYS_INLINE explicit RefPtr(T& ref) : m_ptr(&ref) { m_ptr->ref(); } | 43 ALWAYS_INLINE explicit RefPtr(T& ref) : m_ptr(&ref) { m_ptr->ref(); } |
| 46 ALWAYS_INLINE RefPtr(const RefPtr& o) : m_ptr(o.m_ptr) { refIfNotNull(m_ptr)
; } | 44 ALWAYS_INLINE RefPtr(const RefPtr& o) : m_ptr(o.m_ptr) { refIfNotNull(m_ptr)
; } |
| 47 template <typename U> RefPtr(const RefPtr<U>& o, EnsurePtrConvertibleArgDecl
(U, T)) : m_ptr(o.get()) { refIfNotNull(m_ptr); } | 45 template <typename U> RefPtr(const RefPtr<U>& o, EnsurePtrConvertibleArgDecl
(U, T)) : m_ptr(o.get()) { refIfNotNull(m_ptr); } |
| 48 RefPtr(RefPtr&& o) : m_ptr(o.m_ptr) { o.m_ptr = nullptr; } | 46 RefPtr(RefPtr&& o) : m_ptr(o.m_ptr) { o.m_ptr = nullptr; } |
| 49 | 47 |
| 50 // See comments in PassRefPtr.h for an explanation of why this takes a const | 48 // See comments in PassRefPtr.h for an explanation of why this takes a const |
| 51 // reference. | 49 // reference. |
| 52 template <typename U> RefPtr(const PassRefPtr<U>&, EnsurePtrConvertibleArgDe
cl(U, T)); | 50 template <typename U> RefPtr(const PassRefPtr<U>&, EnsurePtrConvertibleArgDe
cl(U, T)); |
| 53 | 51 |
| 54 // Hash table deleted values, which are only constructed and never copied or | 52 // Hash table deleted values, which are only constructed and never copied or |
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| 174 private: | 172 private: |
| 175 T* m_ptr; | 173 T* m_ptr; |
| 176 }; | 174 }; |
| 177 | 175 |
| 178 } // namespace WTF | 176 } // namespace WTF |
| 179 | 177 |
| 180 using WTF::RefPtr; | 178 using WTF::RefPtr; |
| 181 using WTF::static_pointer_cast; | 179 using WTF::static_pointer_cast; |
| 182 | 180 |
| 183 #endif // WTF_RefPtr_h | 181 #endif // WTF_RefPtr_h |
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