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1 | 1 |
2 /* | 2 /* |
3 * Copyright 2006 The Android Open Source Project | 3 * Copyright 2006 The Android Open Source Project |
4 * | 4 * |
5 * Use of this source code is governed by a BSD-style license that can be | 5 * Use of this source code is governed by a BSD-style license that can be |
6 * found in the LICENSE file. | 6 * found in the LICENSE file. |
7 */ | 7 */ |
8 | 8 |
9 | 9 |
10 #ifndef SkTemplates_DEFINED | 10 #ifndef SkTemplates_DEFINED |
11 #define SkTemplates_DEFINED | 11 #define SkTemplates_DEFINED |
12 | 12 |
13 #include "SkMath.h" | 13 #include "SkMath.h" |
14 #include "SkTLogic.h" | 14 #include "SkTLogic.h" |
15 #include "SkTypes.h" | 15 #include "SkTypes.h" |
| 16 #include "SkUniquePtr.h" |
16 #include "SkUtility.h" | 17 #include "SkUtility.h" |
17 #include <limits.h> | 18 #include <limits.h> |
18 #include <memory> | |
19 #include <new> | 19 #include <new> |
20 | 20 |
21 /** \file SkTemplates.h | 21 /** \file SkTemplates.h |
22 | 22 |
23 This file contains light-weight template classes for type-safe and exception
-safe | 23 This file contains light-weight template classes for type-safe and exception
-safe |
24 resource management. | 24 resource management. |
25 */ | 25 */ |
26 | 26 |
27 /** | 27 /** |
28 * Marks a local variable as known to be unused (to avoid warnings). | 28 * Marks a local variable as known to be unused (to avoid warnings). |
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52 | 52 |
53 /** \class SkAutoTCallVProc | 53 /** \class SkAutoTCallVProc |
54 | 54 |
55 Call a function when this goes out of scope. The template uses two | 55 Call a function when this goes out of scope. The template uses two |
56 parameters, the object, and a function that is to be called in the destructo
r. | 56 parameters, the object, and a function that is to be called in the destructo
r. |
57 If detach() is called, the object reference is set to null. If the object | 57 If detach() is called, the object reference is set to null. If the object |
58 reference is null when the destructor is called, we do not call the | 58 reference is null when the destructor is called, we do not call the |
59 function. | 59 function. |
60 */ | 60 */ |
61 template <typename T, void (*P)(T*)> class SkAutoTCallVProc | 61 template <typename T, void (*P)(T*)> class SkAutoTCallVProc |
62 : public std::unique_ptr<T, SkFunctionWrapper<void, T, P>> { | 62 : public skstd::unique_ptr<T, SkFunctionWrapper<void, T, P>> { |
63 public: | 63 public: |
64 SkAutoTCallVProc(T* obj): std::unique_ptr<T, SkFunctionWrapper<void, T, P>>(
obj) {} | 64 SkAutoTCallVProc(T* obj): skstd::unique_ptr<T, SkFunctionWrapper<void, T, P>
>(obj) {} |
65 | 65 |
66 operator T*() const { return this->get(); } | 66 operator T*() const { return this->get(); } |
67 T* detach() { return this->release(); } | 67 T* detach() { return this->release(); } |
68 }; | 68 }; |
69 | 69 |
70 /** \class SkAutoTCallIProc | 70 /** \class SkAutoTCallIProc |
71 | 71 |
72 Call a function when this goes out of scope. The template uses two | 72 Call a function when this goes out of scope. The template uses two |
73 parameters, the object, and a function that is to be called in the destructor. | 73 parameters, the object, and a function that is to be called in the destructor. |
74 If detach() is called, the object reference is set to null. If the object | 74 If detach() is called, the object reference is set to null. If the object |
75 reference is null when the destructor is called, we do not call the | 75 reference is null when the destructor is called, we do not call the |
76 function. | 76 function. |
77 */ | 77 */ |
78 template <typename T, int (*P)(T*)> class SkAutoTCallIProc | 78 template <typename T, int (*P)(T*)> class SkAutoTCallIProc |
79 : public std::unique_ptr<T, SkFunctionWrapper<int, T, P>> { | 79 : public skstd::unique_ptr<T, SkFunctionWrapper<int, T, P>> { |
80 public: | 80 public: |
81 SkAutoTCallIProc(T* obj): std::unique_ptr<T, SkFunctionWrapper<int, T, P>>(o
bj) {} | 81 SkAutoTCallIProc(T* obj): skstd::unique_ptr<T, SkFunctionWrapper<int, T, P>>
(obj) {} |
82 | 82 |
83 operator T*() const { return this->get(); } | 83 operator T*() const { return this->get(); } |
84 T* detach() { return this->release(); } | 84 T* detach() { return this->release(); } |
85 }; | 85 }; |
86 | 86 |
87 /** \class SkAutoTDelete | 87 /** \class SkAutoTDelete |
88 An SkAutoTDelete<T> is like a T*, except that the destructor of SkAutoTDelete<
T> | 88 An SkAutoTDelete<T> is like a T*, except that the destructor of SkAutoTDelete<
T> |
89 automatically deletes the pointer it holds (if any). That is, SkAutoTDelete<T
> | 89 automatically deletes the pointer it holds (if any). That is, SkAutoTDelete<T
> |
90 owns the T object that it points to. Like a T*, an SkAutoTDelete<T> may hold | 90 owns the T object that it points to. Like a T*, an SkAutoTDelete<T> may hold |
91 either NULL or a pointer to a T object. Also like T*, SkAutoTDelete<T> is | 91 either NULL or a pointer to a T object. Also like T*, SkAutoTDelete<T> is |
92 thread-compatible, and once you dereference it, you get the threadsafety | 92 thread-compatible, and once you dereference it, you get the threadsafety |
93 guarantees of T. | 93 guarantees of T. |
94 | 94 |
95 The size of a SkAutoTDelete is small: sizeof(SkAutoTDelete<T>) == sizeof(T*) | 95 The size of a SkAutoTDelete is small: sizeof(SkAutoTDelete<T>) == sizeof(T*) |
96 */ | 96 */ |
97 template <typename T> class SkAutoTDelete : public std::unique_ptr<T> { | 97 template <typename T> class SkAutoTDelete : public skstd::unique_ptr<T> { |
98 public: | 98 public: |
99 SkAutoTDelete(T* obj = NULL) : std::unique_ptr<T>(obj) {} | 99 SkAutoTDelete(T* obj = NULL) : skstd::unique_ptr<T>(obj) {} |
100 | 100 |
101 operator T*() const { return this->get(); } | 101 operator T*() const { return this->get(); } |
102 void free() { this->reset(nullptr); } | 102 void free() { this->reset(nullptr); } |
103 T* detach() { return this->release(); } | 103 T* detach() { return this->release(); } |
104 }; | 104 }; |
105 | 105 |
106 template <typename T> class SkAutoTDeleteArray : public std::unique_ptr<T[]> { | 106 template <typename T> class SkAutoTDeleteArray : public skstd::unique_ptr<T[]> { |
107 public: | 107 public: |
108 SkAutoTDeleteArray(T array[]) : std::unique_ptr<T[]>(array) {} | 108 SkAutoTDeleteArray(T array[]) : skstd::unique_ptr<T[]>(array) {} |
109 | 109 |
110 void free() { this->reset(nullptr); } | 110 void free() { this->reset(nullptr); } |
111 T* detach() { return this->release(); } | 111 T* detach() { return this->release(); } |
112 }; | 112 }; |
113 | 113 |
114 /** Allocate an array of T elements, and free the array in the destructor | 114 /** Allocate an array of T elements, and free the array in the destructor |
115 */ | 115 */ |
116 template <typename T> class SkAutoTArray : SkNoncopyable { | 116 template <typename T> class SkAutoTArray : SkNoncopyable { |
117 public: | 117 public: |
118 SkAutoTArray() { | 118 SkAutoTArray() { |
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442 * Returns void* because this object does not initialize the | 442 * Returns void* because this object does not initialize the |
443 * memory. Use placement new for types that require a cons. | 443 * memory. Use placement new for types that require a cons. |
444 */ | 444 */ |
445 void* get() { return fStorage.get(); } | 445 void* get() { return fStorage.get(); } |
446 const void* get() const { return fStorage.get(); } | 446 const void* get() const { return fStorage.get(); } |
447 private: | 447 private: |
448 SkAlignedSStorage<sizeof(T)*N> fStorage; | 448 SkAlignedSStorage<sizeof(T)*N> fStorage; |
449 }; | 449 }; |
450 | 450 |
451 #endif | 451 #endif |
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