| OLD | NEW |
| 1 /* | 1 /* |
| 2 * Copyright (C) 2014 Google Inc. All rights reserved. | 2 * Copyright (C) 2014 Google Inc. All rights reserved. |
| 3 * | 3 * |
| 4 * Redistribution and use in source and binary forms, with or without | 4 * Redistribution and use in source and binary forms, with or without |
| 5 * modification, are permitted provided that the following conditions are | 5 * modification, are permitted provided that the following conditions are |
| 6 * met: | 6 * met: |
| 7 * | 7 * |
| 8 * * Redistributions of source code must retain the above copyright | 8 * * Redistributions of source code must retain the above copyright |
| 9 * notice, this list of conditions and the following disclaimer. | 9 * notice, this list of conditions and the following disclaimer. |
| 10 * * Redistributions in binary form must reproduce the above | 10 * * Redistributions in binary form must reproduce the above |
| (...skipping 29 matching lines...) Expand all Loading... |
| 40 | 40 |
| 41 // RawPtr is a simple wrapper for a raw pointer that provides the | 41 // RawPtr is a simple wrapper for a raw pointer that provides the |
| 42 // interface (get, clear) of other pointer types such as RefPtr, | 42 // interface (get, clear) of other pointer types such as RefPtr, |
| 43 // Persistent and Member. This is used for the Blink garbage | 43 // Persistent and Member. This is used for the Blink garbage |
| 44 // collection work in order to be able to write shared code that will | 44 // collection work in order to be able to write shared code that will |
| 45 // use reference counting or garbage collection based on a | 45 // use reference counting or garbage collection based on a |
| 46 // compile-time flag. | 46 // compile-time flag. |
| 47 | 47 |
| 48 namespace WTF { | 48 namespace WTF { |
| 49 | 49 |
| 50 template<typename T> | 50 template <typename T> |
| 51 class RawPtr { | 51 class RawPtr { |
| 52 USING_FAST_MALLOC(RawPtr); | 52 USING_FAST_MALLOC(RawPtr); |
| 53 public: | 53 |
| 54 RawPtr() | 54 public: |
| 55 { | 55 RawPtr() { |
| 56 #if ENABLE(ASSERT) | 56 #if ENABLE(ASSERT) |
| 57 m_ptr = reinterpret_cast<T*>(rawPtrZapValue); | 57 m_ptr = reinterpret_cast<T*>(rawPtrZapValue); |
| 58 #endif | 58 #endif |
| 59 } | 59 } |
| 60 RawPtr(std::nullptr_t) : m_ptr(0) { } | 60 RawPtr(std::nullptr_t) : m_ptr(0) {} |
| 61 RawPtr(T* ptr) : m_ptr(ptr) { } | 61 RawPtr(T* ptr) : m_ptr(ptr) {} |
| 62 explicit RawPtr(T& reference) : m_ptr(&reference) { } | 62 explicit RawPtr(T& reference) : m_ptr(&reference) {} |
| 63 RawPtr(const RawPtr& other) | 63 RawPtr(const RawPtr& other) : m_ptr(other.get()) {} |
| 64 : m_ptr(other.get()) | |
| 65 { | |
| 66 } | |
| 67 | 64 |
| 68 template<typename U> | 65 template <typename U> |
| 69 RawPtr(const RawPtr<U>& other, EnsurePtrConvertibleArgDecl(U, T)) | 66 RawPtr(const RawPtr<U>& other, EnsurePtrConvertibleArgDecl(U, T)) |
| 70 : m_ptr(other.get()) | 67 : m_ptr(other.get()) {} |
| 71 { | |
| 72 } | |
| 73 | 68 |
| 74 // Hash table deleted values, which are only constructed and never copied or
destroyed. | 69 // Hash table deleted values, which are only constructed and never copied or d
estroyed. |
| 75 RawPtr(HashTableDeletedValueType) : m_ptr(hashTableDeletedValue()) { } | 70 RawPtr(HashTableDeletedValueType) : m_ptr(hashTableDeletedValue()) {} |
| 76 bool isHashTableDeletedValue() const { return m_ptr == hashTableDeletedValue
(); } | 71 bool isHashTableDeletedValue() const { |
| 72 return m_ptr == hashTableDeletedValue(); |
| 73 } |
| 77 | 74 |
| 78 T* get() const { return m_ptr; } | 75 T* get() const { return m_ptr; } |
| 79 void clear() { m_ptr = 0; } | 76 void clear() { m_ptr = 0; } |
| 80 RawPtr<T> release() | 77 RawPtr<T> release() { |
| 81 { | 78 RawPtr<T> tmp = m_ptr; |
| 82 RawPtr<T> tmp = m_ptr; | 79 m_ptr = 0; |
| 83 m_ptr = 0; | 80 return tmp; |
| 84 return tmp; | 81 } |
| 85 } | 82 T* leakRef() { |
| 86 T* leakRef() | 83 T* ptr = m_ptr; |
| 87 { | 84 m_ptr = 0; |
| 88 T* ptr = m_ptr; | 85 return ptr; |
| 89 m_ptr = 0; | 86 } |
| 90 return ptr; | 87 T* leakPtr() { |
| 91 } | 88 T* ptr = m_ptr; |
| 92 T* leakPtr() | 89 m_ptr = 0; |
| 93 { | 90 return ptr; |
| 94 T* ptr = m_ptr; | 91 } |
| 95 m_ptr = 0; | |
| 96 return ptr; | |
| 97 } | |
| 98 | 92 |
| 99 template<typename U> | 93 template <typename U> |
| 100 RawPtr& operator=(U* ptr) | 94 RawPtr& operator=(U* ptr) { |
| 101 { | 95 m_ptr = ptr; |
| 102 m_ptr = ptr; | 96 return *this; |
| 103 return *this; | 97 } |
| 104 } | |
| 105 | 98 |
| 106 template<typename U> | 99 template <typename U> |
| 107 RawPtr& operator=(RawPtr<U> ptr) | 100 RawPtr& operator=(RawPtr<U> ptr) { |
| 108 { | 101 m_ptr = ptr.get(); |
| 109 m_ptr = ptr.get(); | 102 return *this; |
| 110 return *this; | 103 } |
| 111 } | |
| 112 | 104 |
| 113 RawPtr& operator=(std::nullptr_t) | 105 RawPtr& operator=(std::nullptr_t) { |
| 114 { | 106 m_ptr = 0; |
| 115 m_ptr = 0; | 107 return *this; |
| 116 return *this; | 108 } |
| 117 } | |
| 118 | 109 |
| 119 operator T*() const { return m_ptr; } | 110 operator T*() const { return m_ptr; } |
| 120 T& operator*() const { return *m_ptr; } | 111 T& operator*() const { return *m_ptr; } |
| 121 T* operator->() const { return m_ptr; } | 112 T* operator->() const { return m_ptr; } |
| 122 bool operator!() const { return !m_ptr; } | 113 bool operator!() const { return !m_ptr; } |
| 123 | 114 |
| 124 void swap(RawPtr& o) | 115 void swap(RawPtr& o) { std::swap(m_ptr, o.m_ptr); } |
| 125 { | |
| 126 std::swap(m_ptr, o.m_ptr); | |
| 127 } | |
| 128 | 116 |
| 129 static T* hashTableDeletedValue() { return reinterpret_cast<T*>(-1); } | 117 static T* hashTableDeletedValue() { return reinterpret_cast<T*>(-1); } |
| 130 | 118 |
| 131 private: | 119 private: |
| 132 static const uintptr_t rawPtrZapValue = 0x3a3a3a3a; | 120 static const uintptr_t rawPtrZapValue = 0x3a3a3a3a; |
| 133 T* m_ptr; | 121 T* m_ptr; |
| 134 }; | 122 }; |
| 135 | 123 |
| 136 template<typename T, typename U> inline RawPtr<T> static_pointer_cast(const RawP
tr<U>& p) | 124 template <typename T, typename U> |
| 137 { | 125 inline RawPtr<T> static_pointer_cast(const RawPtr<U>& p) { |
| 138 return RawPtr<T>(static_cast<T*>(p.get())); | 126 return RawPtr<T>(static_cast<T*>(p.get())); |
| 139 } | 127 } |
| 140 | 128 |
| 141 template<typename T> inline T* getPtr(const RawPtr<T>& p) | 129 template <typename T> |
| 142 { | 130 inline T* getPtr(const RawPtr<T>& p) { |
| 143 return p.get(); | 131 return p.get(); |
| 144 } | 132 } |
| 145 | 133 |
| 146 } // namespace WTF | 134 } // namespace WTF |
| 147 | 135 |
| 148 using WTF::RawPtr; | 136 using WTF::RawPtr; |
| 149 | 137 |
| 150 #endif | 138 #endif |
| OLD | NEW |