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Side by Side Diff: Source/wtf/Allocator.h

Issue 1278983003: Adding allocator annotations to blink classes and structs. (Closed) Base URL: https://chromium.googlesource.com/chromium/blink.git@master
Patch Set: Created 5 years, 4 months ago
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1 // Copyright 2015 The Chromium Authors. All rights reserved. 1 // Copyright 2015 The Chromium 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 #ifndef WTF_Allocator_h 5 #ifndef WTF_Allocator_h
6 #define WTF_Allocator_h 6 #define WTF_Allocator_h
7 7
8 #include "wtf/StdLibExtras.h"
9
8 namespace WTF { 10 namespace WTF {
9 11
10 // Classes that contain references to garbage-collected objects but aren't 12 // Classes that contain references to garbage-collected objects but aren't
11 // themselves garbaged allocated, have some extra macros available which 13 // themselves garbaged allocated, have some extra macros available which
12 // allows their use to be restricted to cases where the garbage collector 14 // allows their use to be restricted to cases where the garbage collector
13 // is able to discover their references. These macros will be useful for 15 // is able to discover their references. These macros will be useful for
14 // non-garbage-collected objects to avoid unintended allocations. 16 // non-garbage-collected objects to avoid unintended allocations.
15 // 17 //
16 // STACK_ALLOCATED(): Use if the object is only stack allocated. 18 // STACK_ALLOCATED(): Use if the object is only stack allocated.
17 // Garbage-collected objects should be in Members but you do not need the 19 // Garbage-collected objects should be in Members but you do not need the
(...skipping 20 matching lines...) Expand all
38 #define ALLOW_ONLY_INLINE_ALLOCATION() \ 40 #define ALLOW_ONLY_INLINE_ALLOCATION() \
39 public: \ 41 public: \
40 using IsAllowOnlyInlineAllocation = int; \ 42 using IsAllowOnlyInlineAllocation = int; \
41 void* operator new(size_t, NotNullTag, void* location) { return location ; } \ 43 void* operator new(size_t, NotNullTag, void* location) { return location ; } \
42 void* operator new(size_t, void* location) { return location; } \ 44 void* operator new(size_t, void* location) { return location; } \
43 private: \ 45 private: \
44 void* operator new(size_t) = delete; 46 void* operator new(size_t) = delete;
45 47
46 #define STATIC_ONLY(Type) \ 48 #define STATIC_ONLY(Type) \
47 private: \ 49 private: \
48 Type() = delete; 50 Type() = delete; \
51 Type(const Type&) = delete; \
52 Type& operator=(const Type&) = delete; \
53 void* operator new(size_t) = delete; \
54 void* operator new(size_t, NotNullTag, void*) = delete; \
55 void* operator new(size_t, void*) = delete;
49 56
50 #if COMPILER(CLANG) 57 #if COMPILER(CLANG)
51 #define STACK_ALLOCATED() \ 58 #define STACK_ALLOCATED() \
52 private: \ 59 private: \
53 __attribute__((annotate("blink_stack_allocated"))) \ 60 __attribute__((annotate("blink_stack_allocated"))) \
54 void* operator new(size_t) = delete; \ 61 void* operator new(size_t) = delete; \
55 void* operator new(size_t, NotNullTag, void*) = delete; \ 62 void* operator new(size_t, NotNullTag, void*) = delete; \
56 void* operator new(size_t, void*) = delete; 63 void* operator new(size_t, void*) = delete;
57 #else 64 #else
58 #define STACK_ALLOCATED() DISALLOW_ALLOCATION() 65 #define STACK_ALLOCATED() DISALLOW_ALLOCATION()
59 #endif 66 #endif
60 67
61 } // namespace WTF 68 } // namespace WTF
62 69
63 #endif /* WTF_Allocator_h */ 70 #endif /* WTF_Allocator_h */
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