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1 // Copyright 2011 the V8 project authors. All rights reserved. | 1 // Copyright 2012 the V8 project authors. All rights reserved. |
2 // Redistribution and use in source and binary forms, with or without | 2 // Redistribution and use in source and binary forms, with or without |
3 // modification, are permitted provided that the following conditions are | 3 // modification, are permitted provided that the following conditions are |
4 // met: | 4 // met: |
5 // | 5 // |
6 // * Redistributions of source code must retain the above copyright | 6 // * Redistributions of source code must retain the above copyright |
7 // notice, this list of conditions and the following disclaimer. | 7 // notice, this list of conditions and the following disclaimer. |
8 // * Redistributions in binary form must reproduce the above | 8 // * Redistributions in binary form must reproduce the above |
9 // copyright notice, this list of conditions and the following | 9 // copyright notice, this list of conditions and the following |
10 // disclaimer in the documentation and/or other materials provided | 10 // disclaimer in the documentation and/or other materials provided |
11 // with the distribution. | 11 // with the distribution. |
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86 | 86 |
87 table_.template RegisterSpecializations<JSObjectVisitor, | 87 table_.template RegisterSpecializations<JSObjectVisitor, |
88 kVisitJSObject, | 88 kVisitJSObject, |
89 kVisitJSObjectGeneric>(); | 89 kVisitJSObjectGeneric>(); |
90 table_.template RegisterSpecializations<StructVisitor, | 90 table_.template RegisterSpecializations<StructVisitor, |
91 kVisitStruct, | 91 kVisitStruct, |
92 kVisitStructGeneric>(); | 92 kVisitStructGeneric>(); |
93 } | 93 } |
94 | 94 |
95 | 95 |
| 96 template<typename StaticVisitor> |
| 97 void StaticMarkingVisitor<StaticVisitor>::Initialize() { |
| 98 table_.Register(kVisitShortcutCandidate, |
| 99 &FixedBodyVisitor<StaticVisitor, |
| 100 ConsString::BodyDescriptor, |
| 101 void>::Visit); |
| 102 |
| 103 table_.Register(kVisitConsString, |
| 104 &FixedBodyVisitor<StaticVisitor, |
| 105 ConsString::BodyDescriptor, |
| 106 void>::Visit); |
| 107 |
| 108 table_.Register(kVisitSlicedString, |
| 109 &FixedBodyVisitor<StaticVisitor, |
| 110 SlicedString::BodyDescriptor, |
| 111 void>::Visit); |
| 112 |
| 113 table_.Register(kVisitFixedArray, |
| 114 &FlexibleBodyVisitor<StaticVisitor, |
| 115 FixedArray::BodyDescriptor, |
| 116 void>::Visit); |
| 117 |
| 118 table_.Register(kVisitFixedDoubleArray, &DataObjectVisitor::Visit); |
| 119 |
| 120 table_.Register(kVisitGlobalContext, &VisitGlobalContext); |
| 121 |
| 122 table_.Register(kVisitByteArray, &DataObjectVisitor::Visit); |
| 123 |
| 124 table_.Register(kVisitFreeSpace, &DataObjectVisitor::Visit); |
| 125 |
| 126 table_.Register(kVisitSeqAsciiString, &DataObjectVisitor::Visit); |
| 127 |
| 128 table_.Register(kVisitSeqTwoByteString, &DataObjectVisitor::Visit); |
| 129 |
| 130 table_.Register(kVisitJSWeakMap, &StaticVisitor::VisitJSWeakMap); |
| 131 |
| 132 table_.Register(kVisitOddball, |
| 133 &FixedBodyVisitor<StaticVisitor, |
| 134 Oddball::BodyDescriptor, |
| 135 void>::Visit); |
| 136 |
| 137 table_.Register(kVisitMap, |
| 138 &FixedBodyVisitor<StaticVisitor, |
| 139 Map::BodyDescriptor, |
| 140 void>::Visit); |
| 141 |
| 142 table_.Register(kVisitCode, &StaticVisitor::VisitCode); |
| 143 |
| 144 // Registration for kVisitSharedFunctionInfo is done by StaticVisitor. |
| 145 |
| 146 // Registration for kVisitJSFunction is done by StaticVisitor. |
| 147 |
| 148 // Registration for kVisitJSRegExp is done by StaticVisitor. |
| 149 |
| 150 table_.Register(kVisitPropertyCell, |
| 151 &FixedBodyVisitor<StaticVisitor, |
| 152 JSGlobalPropertyCell::BodyDescriptor, |
| 153 void>::Visit); |
| 154 |
| 155 table_.template RegisterSpecializations<DataObjectVisitor, |
| 156 kVisitDataObject, |
| 157 kVisitDataObjectGeneric>(); |
| 158 |
| 159 table_.template RegisterSpecializations<JSObjectVisitor, |
| 160 kVisitJSObject, |
| 161 kVisitJSObjectGeneric>(); |
| 162 |
| 163 table_.template RegisterSpecializations<StructObjectVisitor, |
| 164 kVisitStruct, |
| 165 kVisitStructGeneric>(); |
| 166 } |
| 167 |
| 168 |
| 169 template<typename StaticVisitor> |
| 170 void StaticMarkingVisitor<StaticVisitor>::VisitCodeEntry( |
| 171 Heap* heap, Address entry_address) { |
| 172 Code* code = Code::cast(Code::GetObjectFromEntryAddress(entry_address)); |
| 173 heap->mark_compact_collector()->RecordCodeEntrySlot(entry_address, code); |
| 174 StaticVisitor::MarkObject(heap, code); |
| 175 } |
| 176 |
| 177 |
| 178 template<typename StaticVisitor> |
| 179 void StaticMarkingVisitor<StaticVisitor>::VisitGlobalPropertyCell( |
| 180 Heap* heap, RelocInfo* rinfo) { |
| 181 ASSERT(rinfo->rmode() == RelocInfo::GLOBAL_PROPERTY_CELL); |
| 182 JSGlobalPropertyCell* cell = rinfo->target_cell(); |
| 183 StaticVisitor::MarkObject(heap, cell); |
| 184 } |
| 185 |
| 186 |
| 187 template<typename StaticVisitor> |
| 188 void StaticMarkingVisitor<StaticVisitor>::VisitDebugTarget( |
| 189 Heap* heap, RelocInfo* rinfo) { |
| 190 ASSERT((RelocInfo::IsJSReturn(rinfo->rmode()) && |
| 191 rinfo->IsPatchedReturnSequence()) || |
| 192 (RelocInfo::IsDebugBreakSlot(rinfo->rmode()) && |
| 193 rinfo->IsPatchedDebugBreakSlotSequence())); |
| 194 Code* target = Code::GetCodeFromTargetAddress(rinfo->call_address()); |
| 195 heap->mark_compact_collector()->RecordRelocSlot(rinfo, target); |
| 196 StaticVisitor::MarkObject(heap, target); |
| 197 } |
| 198 |
| 199 |
| 200 template<typename StaticVisitor> |
| 201 void StaticMarkingVisitor<StaticVisitor>::VisitGlobalContext( |
| 202 Map* map, HeapObject* object) { |
| 203 FixedBodyVisitor<StaticVisitor, |
| 204 Context::MarkCompactBodyDescriptor, |
| 205 void>::Visit(map, object); |
| 206 |
| 207 MarkCompactCollector* collector = map->GetHeap()->mark_compact_collector(); |
| 208 for (int idx = Context::FIRST_WEAK_SLOT; |
| 209 idx < Context::GLOBAL_CONTEXT_SLOTS; |
| 210 ++idx) { |
| 211 Object** slot = |
| 212 HeapObject::RawField(object, FixedArray::OffsetOfElementAt(idx)); |
| 213 collector->RecordSlot(slot, slot, *slot); |
| 214 } |
| 215 } |
| 216 |
| 217 |
| 218 template<typename StaticVisitor> |
| 219 void StaticMarkingVisitor<StaticVisitor>::VisitJSRegExp( |
| 220 Map* map, HeapObject* object) { |
| 221 int last_property_offset = |
| 222 JSRegExp::kSize + kPointerSize * map->inobject_properties(); |
| 223 StaticVisitor::VisitPointers(map->GetHeap(), |
| 224 HeapObject::RawField(object, JSRegExp::kPropertiesOffset), |
| 225 HeapObject::RawField(object, last_property_offset)); |
| 226 } |
| 227 |
| 228 |
96 void Code::CodeIterateBody(ObjectVisitor* v) { | 229 void Code::CodeIterateBody(ObjectVisitor* v) { |
97 int mode_mask = RelocInfo::kCodeTargetMask | | 230 int mode_mask = RelocInfo::kCodeTargetMask | |
98 RelocInfo::ModeMask(RelocInfo::EMBEDDED_OBJECT) | | 231 RelocInfo::ModeMask(RelocInfo::EMBEDDED_OBJECT) | |
99 RelocInfo::ModeMask(RelocInfo::GLOBAL_PROPERTY_CELL) | | 232 RelocInfo::ModeMask(RelocInfo::GLOBAL_PROPERTY_CELL) | |
100 RelocInfo::ModeMask(RelocInfo::EXTERNAL_REFERENCE) | | 233 RelocInfo::ModeMask(RelocInfo::EXTERNAL_REFERENCE) | |
101 RelocInfo::ModeMask(RelocInfo::JS_RETURN) | | 234 RelocInfo::ModeMask(RelocInfo::JS_RETURN) | |
102 RelocInfo::ModeMask(RelocInfo::DEBUG_BREAK_SLOT) | | 235 RelocInfo::ModeMask(RelocInfo::DEBUG_BREAK_SLOT) | |
103 RelocInfo::ModeMask(RelocInfo::RUNTIME_ENTRY); | 236 RelocInfo::ModeMask(RelocInfo::RUNTIME_ENTRY); |
104 | 237 |
105 // There are two places where we iterate code bodies: here and the | 238 // There are two places where we iterate code bodies: here and the |
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144 RelocIterator it(this, mode_mask); | 277 RelocIterator it(this, mode_mask); |
145 for (; !it.done(); it.next()) { | 278 for (; !it.done(); it.next()) { |
146 it.rinfo()->template Visit<StaticVisitor>(heap); | 279 it.rinfo()->template Visit<StaticVisitor>(heap); |
147 } | 280 } |
148 } | 281 } |
149 | 282 |
150 | 283 |
151 } } // namespace v8::internal | 284 } } // namespace v8::internal |
152 | 285 |
153 #endif // V8_OBJECTS_VISITING_INL_H_ | 286 #endif // V8_OBJECTS_VISITING_INL_H_ |
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