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| 1 // Copyright 2016 PDFium Authors. All rights reserved. | 1 // Copyright 2016 PDFium Authors. All rights reserved. |
| 2 // Use of this source code is governed by a BSD-style license that can be | 2 // Use of this source code is governed by a BSD-style license that can be |
| 3 // found in the LICENSE file. | 3 // found in the LICENSE file. |
| 4 | 4 |
| 5 // Original code copyright 2014 Foxit Software Inc. http://www.foxitsoftware.com | 5 // Original code copyright 2014 Foxit Software Inc. http://www.foxitsoftware.com |
| 6 | 6 |
| 7 #ifndef CORE_FXCRT_INCLUDE_CFX_COUNT_REF_H_ | 7 #ifndef CORE_FXCRT_INCLUDE_CFX_COUNT_REF_H_ |
| 8 #define CORE_FXCRT_INCLUDE_CFX_COUNT_REF_H_ | 8 #define CORE_FXCRT_INCLUDE_CFX_COUNT_REF_H_ |
| 9 | 9 |
| 10 #include "core/fxcrt/include/cfx_retain_ptr.h" | 10 #include "core/fxcrt/include/cfx_retain_ptr.h" |
| (...skipping 11 matching lines...) Expand all Loading... |
| 22 m_pObject.Reset(new CountedObj(params...)); | 22 m_pObject.Reset(new CountedObj(params...)); |
| 23 return m_pObject.Get(); | 23 return m_pObject.Get(); |
| 24 } | 24 } |
| 25 | 25 |
| 26 CFX_CountRef& operator=(const CFX_CountRef& that) { | 26 CFX_CountRef& operator=(const CFX_CountRef& that) { |
| 27 if (*this != that) | 27 if (*this != that) |
| 28 m_pObject = that.m_pObject; | 28 m_pObject = that.m_pObject; |
| 29 return *this; | 29 return *this; |
| 30 } | 30 } |
| 31 | 31 |
| 32 void Clear() { m_pObject.Reset(); } | 32 void SetNull() { m_pObject.Reset(); } |
| 33 ObjClass* GetObject() { return m_pObject.Get(); } | 33 ObjClass* GetObject() { return m_pObject.Get(); } |
| 34 const ObjClass* GetObject() const { return m_pObject.Get(); } | 34 const ObjClass* GetObject() const { return m_pObject.Get(); } |
| 35 | 35 |
| 36 template <typename... Args> | 36 template <typename... Args> |
| 37 void MakePrivateCopy(Args... params) { | 37 ObjClass* GetPrivateCopy(Args... params) { |
| 38 if (!m_pObject) | 38 if (!m_pObject) |
| 39 m_pObject.Reset(new CountedObj(params...)); | 39 return New(params...); |
| 40 else if (!m_pObject->HasOneRef()) | 40 if (!m_pObject->HasOneRef()) |
| 41 m_pObject.Reset(new CountedObj(*m_pObject)); | 41 m_pObject.Reset(new CountedObj(*m_pObject)); |
| 42 return m_pObject.Get(); |
| 42 } | 43 } |
| 43 | 44 |
| 44 bool operator==(const CFX_CountRef& that) const { | 45 bool operator==(const CFX_CountRef& that) const { |
| 45 return m_pObject == that.m_pObject; | 46 return m_pObject == that.m_pObject; |
| 46 } | 47 } |
| 47 bool operator!=(const CFX_CountRef& that) const { return !(*this == that); } | 48 bool operator!=(const CFX_CountRef& that) const { return !(*this == that); } |
| 48 operator bool() const { return m_pObject; } | 49 operator bool() const { return m_pObject; } |
| 49 ObjClass& operator*() const { return *m_pObject.Get(); } | |
| 50 ObjClass* operator->() const { return m_pObject.Get(); } | |
| 51 | 50 |
| 52 private: | 51 private: |
| 53 class CountedObj : public ObjClass { | 52 class CountedObj : public ObjClass { |
| 54 public: | 53 public: |
| 55 template <typename... Args> | 54 template <typename... Args> |
| 56 CountedObj(Args... params) : ObjClass(params...), m_RefCount(0) {} | 55 CountedObj(Args... params) : ObjClass(params...), m_RefCount(0) {} |
| 57 | 56 |
| 58 CountedObj(const CountedObj& src) : ObjClass(src), m_RefCount(0) {} | 57 CountedObj(const CountedObj& src) : ObjClass(src), m_RefCount(0) {} |
| 59 | 58 |
| 60 bool HasOneRef() const { return m_RefCount == 1; } | 59 bool HasOneRef() const { return m_RefCount == 1; } |
| 61 void Retain() { m_RefCount++; } | 60 void Retain() { m_RefCount++; } |
| 62 void Release() { | 61 void Release() { |
| 63 if (--m_RefCount <= 0) | 62 if (--m_RefCount <= 0) |
| 64 delete this; | 63 delete this; |
| 65 } | 64 } |
| 66 | 65 |
| 67 private: | 66 private: |
| 68 intptr_t m_RefCount; | 67 intptr_t m_RefCount; |
| 69 }; | 68 }; |
| 70 | 69 |
| 71 CFX_RetainPtr<CountedObj> m_pObject; | 70 CFX_RetainPtr<CountedObj> m_pObject; |
| 72 }; | 71 }; |
| 73 | 72 |
| 74 #endif // CORE_FXCRT_INCLUDE_CFX_COUNT_REF_H_ | 73 #endif // CORE_FXCRT_INCLUDE_CFX_COUNT_REF_H_ |
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