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1 // Copyright 2012 the V8 project authors. All rights reserved. | 1 // Copyright 2012 the V8 project 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 V8_OBJECTS_VISITING_INL_H_ | 5 #ifndef V8_OBJECTS_VISITING_INL_H_ |
6 #define V8_OBJECTS_VISITING_INL_H_ | 6 #define V8_OBJECTS_VISITING_INL_H_ |
7 | 7 |
8 #include "src/heap/array-buffer-tracker.h" | 8 #include "src/heap/array-buffer-tracker.h" |
9 #include "src/heap/mark-compact.h" | 9 #include "src/heap/mark-compact.h" |
10 #include "src/heap/objects-visiting.h" | 10 #include "src/heap/objects-visiting.h" |
11 #include "src/ic/ic-state.h" | 11 #include "src/ic/ic-state.h" |
12 #include "src/macro-assembler.h" | 12 #include "src/macro-assembler.h" |
13 #include "src/objects-body-descriptors-inl.h" | 13 #include "src/objects-body-descriptors-inl.h" |
14 | 14 |
15 namespace v8 { | 15 namespace v8 { |
16 namespace internal { | 16 namespace internal { |
17 | 17 |
18 VisitorId StaticVisitorBase::GetVisitorId(Map* map) { | |
19 return GetVisitorId(map->instance_type(), map->instance_size(), | |
20 FLAG_unbox_double_fields && !map->HasFastPointerLayout()); | |
21 } | |
22 | |
23 VisitorId StaticVisitorBase::GetVisitorId(int instance_type, int instance_size, | |
24 bool has_unboxed_fields) { | |
25 if (instance_type < FIRST_NONSTRING_TYPE) { | |
26 switch (instance_type & kStringRepresentationMask) { | |
27 case kSeqStringTag: | |
28 if ((instance_type & kStringEncodingMask) == kOneByteStringTag) { | |
29 return kVisitSeqOneByteString; | |
30 } else { | |
31 return kVisitSeqTwoByteString; | |
32 } | |
33 | |
34 case kConsStringTag: | |
35 if (IsShortcutCandidate(instance_type)) { | |
36 return kVisitShortcutCandidate; | |
37 } else { | |
38 return kVisitConsString; | |
39 } | |
40 | |
41 case kSlicedStringTag: | |
42 return kVisitSlicedString; | |
43 | |
44 case kExternalStringTag: | |
45 return kVisitDataObject; | |
46 | |
47 case kThinStringTag: | |
48 return kVisitThinString; | |
49 } | |
50 UNREACHABLE(); | |
51 } | |
52 | |
53 switch (instance_type) { | |
54 case BYTE_ARRAY_TYPE: | |
55 return kVisitByteArray; | |
56 | |
57 case BYTECODE_ARRAY_TYPE: | |
58 return kVisitBytecodeArray; | |
59 | |
60 case FREE_SPACE_TYPE: | |
61 return kVisitFreeSpace; | |
62 | |
63 case FIXED_ARRAY_TYPE: | |
64 return kVisitFixedArray; | |
65 | |
66 case FIXED_DOUBLE_ARRAY_TYPE: | |
67 return kVisitFixedDoubleArray; | |
68 | |
69 case ODDBALL_TYPE: | |
70 return kVisitOddball; | |
71 | |
72 case MAP_TYPE: | |
73 return kVisitMap; | |
74 | |
75 case CODE_TYPE: | |
76 return kVisitCode; | |
77 | |
78 case CELL_TYPE: | |
79 return kVisitCell; | |
80 | |
81 case PROPERTY_CELL_TYPE: | |
82 return kVisitPropertyCell; | |
83 | |
84 case WEAK_CELL_TYPE: | |
85 return kVisitWeakCell; | |
86 | |
87 case TRANSITION_ARRAY_TYPE: | |
88 return kVisitTransitionArray; | |
89 | |
90 case JS_WEAK_MAP_TYPE: | |
91 case JS_WEAK_SET_TYPE: | |
92 return kVisitJSWeakCollection; | |
93 | |
94 case JS_REGEXP_TYPE: | |
95 return kVisitJSRegExp; | |
96 | |
97 case SHARED_FUNCTION_INFO_TYPE: | |
98 return kVisitSharedFunctionInfo; | |
99 | |
100 case JS_PROXY_TYPE: | |
101 return kVisitStruct; | |
102 | |
103 case SYMBOL_TYPE: | |
104 return kVisitSymbol; | |
105 | |
106 case JS_ARRAY_BUFFER_TYPE: | |
107 return kVisitJSArrayBuffer; | |
108 | |
109 case SMALL_ORDERED_HASH_MAP_TYPE: | |
110 return kVisitSmallOrderedHashMap; | |
111 | |
112 case SMALL_ORDERED_HASH_SET_TYPE: | |
113 return kVisitSmallOrderedHashSet; | |
114 | |
115 case JS_OBJECT_TYPE: | |
116 case JS_ERROR_TYPE: | |
117 case JS_ARGUMENTS_TYPE: | |
118 case JS_ASYNC_FROM_SYNC_ITERATOR_TYPE: | |
119 case JS_CONTEXT_EXTENSION_OBJECT_TYPE: | |
120 case JS_GENERATOR_OBJECT_TYPE: | |
121 case JS_ASYNC_GENERATOR_OBJECT_TYPE: | |
122 case JS_MODULE_NAMESPACE_TYPE: | |
123 case JS_VALUE_TYPE: | |
124 case JS_DATE_TYPE: | |
125 case JS_ARRAY_TYPE: | |
126 case JS_GLOBAL_PROXY_TYPE: | |
127 case JS_GLOBAL_OBJECT_TYPE: | |
128 case JS_MESSAGE_OBJECT_TYPE: | |
129 case JS_TYPED_ARRAY_TYPE: | |
130 case JS_DATA_VIEW_TYPE: | |
131 case JS_SET_TYPE: | |
132 case JS_MAP_TYPE: | |
133 case JS_SET_ITERATOR_TYPE: | |
134 case JS_MAP_ITERATOR_TYPE: | |
135 case JS_STRING_ITERATOR_TYPE: | |
136 | |
137 case JS_TYPED_ARRAY_KEY_ITERATOR_TYPE: | |
138 case JS_FAST_ARRAY_KEY_ITERATOR_TYPE: | |
139 case JS_GENERIC_ARRAY_KEY_ITERATOR_TYPE: | |
140 case JS_UINT8_ARRAY_KEY_VALUE_ITERATOR_TYPE: | |
141 case JS_INT8_ARRAY_KEY_VALUE_ITERATOR_TYPE: | |
142 case JS_UINT16_ARRAY_KEY_VALUE_ITERATOR_TYPE: | |
143 case JS_INT16_ARRAY_KEY_VALUE_ITERATOR_TYPE: | |
144 case JS_UINT32_ARRAY_KEY_VALUE_ITERATOR_TYPE: | |
145 case JS_INT32_ARRAY_KEY_VALUE_ITERATOR_TYPE: | |
146 case JS_FLOAT32_ARRAY_KEY_VALUE_ITERATOR_TYPE: | |
147 case JS_FLOAT64_ARRAY_KEY_VALUE_ITERATOR_TYPE: | |
148 case JS_UINT8_CLAMPED_ARRAY_KEY_VALUE_ITERATOR_TYPE: | |
149 case JS_FAST_SMI_ARRAY_KEY_VALUE_ITERATOR_TYPE: | |
150 case JS_FAST_HOLEY_SMI_ARRAY_KEY_VALUE_ITERATOR_TYPE: | |
151 case JS_FAST_ARRAY_KEY_VALUE_ITERATOR_TYPE: | |
152 case JS_FAST_HOLEY_ARRAY_KEY_VALUE_ITERATOR_TYPE: | |
153 case JS_FAST_DOUBLE_ARRAY_KEY_VALUE_ITERATOR_TYPE: | |
154 case JS_FAST_HOLEY_DOUBLE_ARRAY_KEY_VALUE_ITERATOR_TYPE: | |
155 case JS_GENERIC_ARRAY_KEY_VALUE_ITERATOR_TYPE: | |
156 case JS_UINT8_ARRAY_VALUE_ITERATOR_TYPE: | |
157 case JS_INT8_ARRAY_VALUE_ITERATOR_TYPE: | |
158 case JS_UINT16_ARRAY_VALUE_ITERATOR_TYPE: | |
159 case JS_INT16_ARRAY_VALUE_ITERATOR_TYPE: | |
160 case JS_UINT32_ARRAY_VALUE_ITERATOR_TYPE: | |
161 case JS_INT32_ARRAY_VALUE_ITERATOR_TYPE: | |
162 case JS_FLOAT32_ARRAY_VALUE_ITERATOR_TYPE: | |
163 case JS_FLOAT64_ARRAY_VALUE_ITERATOR_TYPE: | |
164 case JS_UINT8_CLAMPED_ARRAY_VALUE_ITERATOR_TYPE: | |
165 case JS_FAST_SMI_ARRAY_VALUE_ITERATOR_TYPE: | |
166 case JS_FAST_HOLEY_SMI_ARRAY_VALUE_ITERATOR_TYPE: | |
167 case JS_FAST_ARRAY_VALUE_ITERATOR_TYPE: | |
168 case JS_FAST_HOLEY_ARRAY_VALUE_ITERATOR_TYPE: | |
169 case JS_FAST_DOUBLE_ARRAY_VALUE_ITERATOR_TYPE: | |
170 case JS_FAST_HOLEY_DOUBLE_ARRAY_VALUE_ITERATOR_TYPE: | |
171 case JS_GENERIC_ARRAY_VALUE_ITERATOR_TYPE: | |
172 | |
173 case JS_PROMISE_CAPABILITY_TYPE: | |
174 case JS_PROMISE_TYPE: | |
175 case JS_BOUND_FUNCTION_TYPE: | |
176 return has_unboxed_fields ? kVisitJSObject : kVisitJSObjectFast; | |
177 case JS_API_OBJECT_TYPE: | |
178 case JS_SPECIAL_API_OBJECT_TYPE: | |
179 return kVisitJSApiObject; | |
180 | |
181 case JS_FUNCTION_TYPE: | |
182 return kVisitJSFunction; | |
183 | |
184 case FILLER_TYPE: | |
185 case FOREIGN_TYPE: | |
186 case HEAP_NUMBER_TYPE: | |
187 case MUTABLE_HEAP_NUMBER_TYPE: | |
188 return kVisitDataObject; | |
189 | |
190 case FIXED_UINT8_ARRAY_TYPE: | |
191 case FIXED_INT8_ARRAY_TYPE: | |
192 case FIXED_UINT16_ARRAY_TYPE: | |
193 case FIXED_INT16_ARRAY_TYPE: | |
194 case FIXED_UINT32_ARRAY_TYPE: | |
195 case FIXED_INT32_ARRAY_TYPE: | |
196 case FIXED_FLOAT32_ARRAY_TYPE: | |
197 case FIXED_UINT8_CLAMPED_ARRAY_TYPE: | |
198 return kVisitFixedTypedArrayBase; | |
199 | |
200 case FIXED_FLOAT64_ARRAY_TYPE: | |
201 return kVisitFixedFloat64Array; | |
202 | |
203 #define MAKE_STRUCT_CASE(NAME, Name, name) case NAME##_TYPE: | |
204 STRUCT_LIST(MAKE_STRUCT_CASE) | |
205 #undef MAKE_STRUCT_CASE | |
206 if (instance_type == ALLOCATION_SITE_TYPE) { | |
207 return kVisitAllocationSite; | |
208 } | |
209 | |
210 return kVisitStruct; | |
211 | |
212 default: | |
213 UNREACHABLE(); | |
214 } | |
215 } | |
216 | 18 |
217 template <typename Callback> | 19 template <typename Callback> |
218 Callback VisitorDispatchTable<Callback>::GetVisitor(Map* map) { | 20 Callback VisitorDispatchTable<Callback>::GetVisitor(Map* map) { |
219 return reinterpret_cast<Callback>(callbacks_[map->visitor_id()]); | 21 return reinterpret_cast<Callback>(callbacks_[map->visitor_id()]); |
220 } | 22 } |
221 | 23 |
222 template <typename StaticVisitor> | 24 template <typename StaticVisitor> |
223 void StaticMarkingVisitor<StaticVisitor>::Initialize() { | 25 void StaticMarkingVisitor<StaticVisitor>::Initialize() { |
224 table_.Register(kVisitShortcutCandidate, | 26 table_.Register(kVisitShortcutCandidate, |
225 &FixedBodyVisitor<StaticVisitor, ConsString::BodyDescriptor, | 27 &FixedBodyVisitor<StaticVisitor, ConsString::BodyDescriptor, |
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752 int size = Context::BodyDescriptor::SizeOf(map, object); | 554 int size = Context::BodyDescriptor::SizeOf(map, object); |
753 VisitMapPointer(object, object->map_slot()); | 555 VisitMapPointer(object, object->map_slot()); |
754 Context::BodyDescriptor::IterateBody(object, size, this); | 556 Context::BodyDescriptor::IterateBody(object, size, this); |
755 return size; | 557 return size; |
756 } | 558 } |
757 | 559 |
758 } // namespace internal | 560 } // namespace internal |
759 } // namespace v8 | 561 } // namespace v8 |
760 | 562 |
761 #endif // V8_OBJECTS_VISITING_INL_H_ | 563 #endif // V8_OBJECTS_VISITING_INL_H_ |
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