OLD | NEW |
1 /* | 1 /* |
2 * Copyright (C) 2013 Google Inc. All rights reserved. | 2 * Copyright (C) 2013 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 26 matching lines...) Expand all Loading... |
37 | 37 |
38 #include "wtf/Allocator.h" | 38 #include "wtf/Allocator.h" |
39 #include "wtf/Assertions.h" | 39 #include "wtf/Assertions.h" |
40 #include "wtf/allocator/PartitionAlloc.h" | 40 #include "wtf/allocator/PartitionAlloc.h" |
41 #include "wtf/allocator/Partitions.h" | 41 #include "wtf/allocator/Partitions.h" |
42 | 42 |
43 #include <string.h> | 43 #include <string.h> |
44 | 44 |
45 namespace WTF { | 45 namespace WTF { |
46 | 46 |
47 class PartitionAllocatorDummyVisitor; | 47 class PartitionAllocatorDummyVisitor { |
| 48 DISALLOW_NEW(); |
| 49 }; |
48 | 50 |
49 class WTF_EXPORT PartitionAllocator { | 51 class WTF_EXPORT PartitionAllocator { |
50 public: | 52 public: |
51 typedef PartitionAllocatorDummyVisitor Visitor; | 53 typedef PartitionAllocatorDummyVisitor Visitor; |
52 static const bool isGarbageCollected = false; | 54 static const bool isGarbageCollected = false; |
53 | 55 |
54 template<typename T> | 56 template<typename T> |
55 static size_t quantizedSize(size_t count) | 57 static size_t quantizedSize(size_t count) |
56 { | 58 { |
57 RELEASE_ASSERT(count <= kGenericMaxDirectMapped / sizeof(T)); | 59 RELEASE_ASSERT(count <= kGenericMaxDirectMapped / sizeof(T)); |
(...skipping 59 matching lines...) Expand 10 before | Expand all | Expand 10 after Loading... |
117 { | 119 { |
118 return malloc<void*, void>(bytes, WTF_HEAP_PROFILER_TYPE_NAME(T)); | 120 return malloc<void*, void>(bytes, WTF_HEAP_PROFILER_TYPE_NAME(T)); |
119 } | 121 } |
120 static void | 122 static void |
121 deleteArray(void* ptr) | 123 deleteArray(void* ptr) |
122 { | 124 { |
123 free(ptr); // Not the system free, the one from this class. | 125 free(ptr); // Not the system free, the one from this class. |
124 } | 126 } |
125 | 127 |
126 static bool isAllocationAllowed() { return true; } | 128 static bool isAllocationAllowed() { return true; } |
127 template<typename T> | |
128 static bool isHeapObjectAlive(T* object) | |
129 { | |
130 ASSERT_NOT_REACHED(); | |
131 return false; | |
132 } | |
133 | |
134 static void markNoTracing(...) | |
135 { | |
136 ASSERT_NOT_REACHED(); | |
137 } | |
138 | |
139 static void registerDelayedMarkNoTracing(...) | |
140 { | |
141 ASSERT_NOT_REACHED(); | |
142 } | |
143 | |
144 static void registerWeakMembers(...) | |
145 { | |
146 ASSERT_NOT_REACHED(); | |
147 } | |
148 | |
149 static void registerWeakTable(...) | |
150 { | |
151 ASSERT_NOT_REACHED(); | |
152 } | |
153 | |
154 #if ENABLE(ASSERT) | |
155 static bool weakTableRegistered(...) | |
156 { | |
157 ASSERT_NOT_REACHED(); | |
158 return false; | |
159 } | |
160 #endif | |
161 | |
162 template<typename T, typename Traits> | |
163 static void trace(...) | |
164 { | |
165 ASSERT_NOT_REACHED(); | |
166 } | |
167 | 129 |
168 template<typename T> | 130 template<typename T> |
169 struct OtherType { | 131 struct OtherType { |
170 typedef T* Type; | 132 typedef T* Type; |
171 }; | 133 }; |
172 | 134 |
173 template<typename T> | 135 template<typename T> |
174 static T& getOther(T* other) | 136 static T& getOther(T* other) |
175 { | 137 { |
176 return *other; | 138 return *other; |
177 } | 139 } |
178 | 140 |
179 static void enterGCForbiddenScope() { } | 141 static void enterGCForbiddenScope() { } |
180 static void leaveGCForbiddenScope() { } | 142 static void leaveGCForbiddenScope() { } |
181 | 143 |
182 private: | 144 private: |
183 static void* allocateBacking(size_t, const char* typeName); | 145 static void* allocateBacking(size_t, const char* typeName); |
184 }; | 146 }; |
185 | 147 |
186 // The Windows compiler seems to be very eager to instantiate things it won't | |
187 // need, so unless we have this class we get compile errors. | |
188 class PartitionAllocatorDummyVisitor { | |
189 DISALLOW_NEW(); | |
190 public: | |
191 template<typename T> inline bool isHeapObjectAlive(T obj) | |
192 { | |
193 ASSERT_NOT_REACHED(); | |
194 return false; | |
195 } | |
196 }; | |
197 | |
198 // Specializations for heap profiling, so type profiling of |char| is possible | 148 // Specializations for heap profiling, so type profiling of |char| is possible |
199 // even in official builds (because |char| makes up a large portion of the heap.
) | 149 // even in official builds (because |char| makes up a large portion of the heap.
) |
200 template <> WTF_EXPORT char* PartitionAllocator::allocateVectorBacking<char>(siz
e_t); | 150 template <> WTF_EXPORT char* PartitionAllocator::allocateVectorBacking<char>(siz
e_t); |
201 template <> WTF_EXPORT char* PartitionAllocator::allocateExpandedVectorBacking<c
har>(size_t); | 151 template <> WTF_EXPORT char* PartitionAllocator::allocateExpandedVectorBacking<c
har>(size_t); |
202 | 152 |
203 } // namespace WTF | 153 } // namespace WTF |
204 | 154 |
205 #define WTF_USE_ALLOCATOR(ClassName, Allocator) \ | 155 #define WTF_USE_ALLOCATOR(ClassName, Allocator) \ |
206 public: \ | 156 public: \ |
207 void* operator new(size_t size) \ | 157 void* operator new(size_t size) \ |
208 { \ | 158 { \ |
209 return Allocator::template malloc<void*, ClassName>(size, WTF_HEAP_PROFI
LER_TYPE_NAME(ClassName)); \ | 159 return Allocator::template malloc<void*, ClassName>(size, WTF_HEAP_PROFI
LER_TYPE_NAME(ClassName)); \ |
210 } \ | 160 } \ |
211 void operator delete(void* p) { Allocator::free(p); } \ | 161 void operator delete(void* p) { Allocator::free(p); } \ |
212 void* operator new[](size_t size) { return Allocator::template newArray<Clas
sName>(size); } \ | 162 void* operator new[](size_t size) { return Allocator::template newArray<Clas
sName>(size); } \ |
213 void operator delete[](void* p) { Allocator::deleteArray(p); } \ | 163 void operator delete[](void* p) { Allocator::deleteArray(p); } \ |
214 void* operator new(size_t, NotNullTag, void* location) \ | 164 void* operator new(size_t, NotNullTag, void* location) \ |
215 { \ | 165 { \ |
216 ASSERT(location); \ | 166 ASSERT(location); \ |
217 return location; \ | 167 return location; \ |
218 } \ | 168 } \ |
219 private: \ | 169 private: \ |
220 typedef int __thisIsHereToForceASemicolonAfterThisMacro | 170 typedef int __thisIsHereToForceASemicolonAfterThisMacro |
221 | 171 |
222 using WTF::PartitionAllocator; | 172 using WTF::PartitionAllocator; |
223 | 173 |
224 #endif // WTF_PartitionAllocator_h | 174 #endif // WTF_PartitionAllocator_h |
OLD | NEW |