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Side by Side Diff: third_party/WebKit/Source/platform/heap/GarbageCollected.h

Issue 2700123003: DO NOT COMMIT: Results of running old (current) clang-format on Blink (Closed)
Patch Set: Created 3 years, 10 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 GarbageCollected_h 5 #ifndef GarbageCollected_h
6 #define GarbageCollected_h 6 #define GarbageCollected_h
7 7
8 #include "platform/heap/ThreadState.h" 8 #include "platform/heap/ThreadState.h"
9 #include "wtf/Allocator.h" 9 #include "wtf/Allocator.h"
10 #include "wtf/Assertions.h" 10 #include "wtf/Assertions.h"
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142 // }; 142 // };
143 // 143 //
144 // The "operator new" for B will enter the forbidden GC scope, but 144 // The "operator new" for B will enter the forbidden GC scope, but
145 // upon construction, two GarbageCollectedMixinConstructorMarker constructors 145 // upon construction, two GarbageCollectedMixinConstructorMarker constructors
146 // will run -- one for A (first) and another for B (secondly). Only 146 // will run -- one for A (first) and another for B (secondly). Only
147 // the second one should leave the forbidden GC scope. This is realized by 147 // the second one should leave the forbidden GC scope. This is realized by
148 // recording the address of B's GarbageCollectedMixinConstructorMarker 148 // recording the address of B's GarbageCollectedMixinConstructorMarker
149 // when the "operator new" for B runs, and leaving the forbidden GC scope 149 // when the "operator new" for B runs, and leaving the forbidden GC scope
150 // when the constructor of the recorded GarbageCollectedMixinConstructorMarker 150 // when the constructor of the recorded GarbageCollectedMixinConstructorMarker
151 // runs. 151 // runs.
152 #define USING_GARBAGE_COLLECTED_MIXIN(TYPE) \ 152 #define USING_GARBAGE_COLLECTED_MIXIN(TYPE) \
153 IS_GARBAGE_COLLECTED_TYPE(); \ 153 IS_GARBAGE_COLLECTED_TYPE(); \
154 DEFINE_GARBAGE_COLLECTED_MIXIN_METHODS(blink::Visitor*, TYPE) \ 154 DEFINE_GARBAGE_COLLECTED_MIXIN_METHODS(blink::Visitor*, TYPE) \
155 DEFINE_GARBAGE_COLLECTED_MIXIN_CONSTRUCTOR_MARKER(TYPE) \ 155 DEFINE_GARBAGE_COLLECTED_MIXIN_CONSTRUCTOR_MARKER(TYPE) \
156 public: \ 156 public: \
157 bool isHeapObjectAlive() const override { \ 157 bool isHeapObjectAlive() const override { \
158 return ThreadHeap::isHeapObjectAlive(this); \ 158 return ThreadHeap::isHeapObjectAlive(this); \
159 } \ 159 } \
160 \ 160 \
161 private: 161 private:
162 162
163 // An empty class with a constructor that's arranged invoked when all derived 163 // An empty class with a constructor that's arranged invoked when all derived
164 // constructors of a mixin instance have completed and it is safe to allow GCs 164 // constructors of a mixin instance have completed and it is safe to allow GCs
165 // again. See AllocateObjectTrait<> comment for more. 165 // again. See AllocateObjectTrait<> comment for more.
166 // 166 //
167 // USING_GARBAGE_COLLECTED_MIXIN() declares a 167 // USING_GARBAGE_COLLECTED_MIXIN() declares a
168 // GarbageCollectedMixinConstructorMarker<> private field. By following Blink 168 // GarbageCollectedMixinConstructorMarker<> private field. By following Blink
169 // convention of using the macro at the top of a class declaration, its 169 // convention of using the macro at the top of a class declaration, its
170 // constructor will run first. 170 // constructor will run first.
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281 static FalseType isSizeofKnown(...); 281 static FalseType isSizeofKnown(...);
282 static T& t; 282 static T& t;
283 283
284 public: 284 public:
285 static const bool value = sizeof(TrueType) == sizeof(isSizeofKnown(&t)); 285 static const bool value = sizeof(TrueType) == sizeof(isSizeofKnown(&t));
286 }; 286 };
287 287
288 } // namespace blink 288 } // namespace blink
289 289
290 #endif 290 #endif
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