Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 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 |
| 3 | // found in the LICENSE file. |
| 4 | |
| 5 | #ifndef V8_OBJECTS_VISITING_INL_H_ |
| 6 | #define V8_OBJECTS_VISITING_INL_H_ |
| 7 | |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 8 | #include "src/heap/array-buffer-tracker.h" |
| 9 | #include "src/heap/objects-visiting.h" |
| 10 | #include "src/ic/ic-state.h" |
| 11 | #include "src/macro-assembler.h" |
| 12 | #include "src/objects-body-descriptors-inl.h" |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 13 | |
| 14 | namespace v8 { |
| 15 | namespace internal { |
| 16 | |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 17 | |
| 18 | template <typename Callback> |
| 19 | Callback VisitorDispatchTable<Callback>::GetVisitor(Map* map) { |
| 20 | return reinterpret_cast<Callback>(callbacks_[map->visitor_id()]); |
| 21 | } |
| 22 | |
| 23 | |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 24 | template <typename StaticVisitor> |
| 25 | void StaticNewSpaceVisitor<StaticVisitor>::Initialize() { |
| 26 | table_.Register( |
| 27 | kVisitShortcutCandidate, |
| 28 | &FixedBodyVisitor<StaticVisitor, ConsString::BodyDescriptor, int>::Visit); |
| 29 | |
| 30 | table_.Register( |
| 31 | kVisitConsString, |
| 32 | &FixedBodyVisitor<StaticVisitor, ConsString::BodyDescriptor, int>::Visit); |
| 33 | |
| 34 | table_.Register(kVisitSlicedString, |
| 35 | &FixedBodyVisitor<StaticVisitor, SlicedString::BodyDescriptor, |
| 36 | int>::Visit); |
| 37 | |
| 38 | table_.Register( |
| 39 | kVisitSymbol, |
| 40 | &FixedBodyVisitor<StaticVisitor, Symbol::BodyDescriptor, int>::Visit); |
| 41 | |
| 42 | table_.Register(kVisitFixedArray, |
| 43 | &FlexibleBodyVisitor<StaticVisitor, |
| 44 | FixedArray::BodyDescriptor, int>::Visit); |
| 45 | |
| 46 | table_.Register(kVisitFixedDoubleArray, &VisitFixedDoubleArray); |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 47 | table_.Register( |
| 48 | kVisitFixedTypedArray, |
| 49 | &FlexibleBodyVisitor<StaticVisitor, FixedTypedArrayBase::BodyDescriptor, |
| 50 | int>::Visit); |
| 51 | |
| 52 | table_.Register( |
| 53 | kVisitFixedFloat64Array, |
| 54 | &FlexibleBodyVisitor<StaticVisitor, FixedTypedArrayBase::BodyDescriptor, |
| 55 | int>::Visit); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 56 | |
| 57 | table_.Register( |
| 58 | kVisitNativeContext, |
| 59 | &FixedBodyVisitor<StaticVisitor, Context::ScavengeBodyDescriptor, |
| 60 | int>::Visit); |
| 61 | |
| 62 | table_.Register(kVisitByteArray, &VisitByteArray); |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 63 | table_.Register(kVisitBytecodeArray, &VisitBytecodeArray); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 64 | |
| 65 | table_.Register( |
| 66 | kVisitSharedFunctionInfo, |
| 67 | &FixedBodyVisitor<StaticVisitor, SharedFunctionInfo::BodyDescriptor, |
| 68 | int>::Visit); |
| 69 | |
| 70 | table_.Register(kVisitSeqOneByteString, &VisitSeqOneByteString); |
| 71 | |
| 72 | table_.Register(kVisitSeqTwoByteString, &VisitSeqTwoByteString); |
| 73 | |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 74 | // Don't visit code entry. We are using this visitor only during scavenges. |
| 75 | table_.Register( |
| 76 | kVisitJSFunction, |
| 77 | &FlexibleBodyVisitor<StaticVisitor, JSFunction::BodyDescriptorWeakCode, |
| 78 | int>::Visit); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 79 | |
Ben Murdoch | 61f157c | 2016-09-16 13:49:30 +0100 | [diff] [blame] | 80 | table_.Register( |
| 81 | kVisitJSArrayBuffer, |
| 82 | &FlexibleBodyVisitor<StaticVisitor, JSArrayBuffer::BodyDescriptor, |
| 83 | int>::Visit); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 84 | |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 85 | table_.Register(kVisitFreeSpace, &VisitFreeSpace); |
| 86 | |
| 87 | table_.Register(kVisitJSWeakCollection, &JSObjectVisitor::Visit); |
| 88 | |
| 89 | table_.Register(kVisitJSRegExp, &JSObjectVisitor::Visit); |
| 90 | |
| 91 | table_.template RegisterSpecializations<DataObjectVisitor, kVisitDataObject, |
| 92 | kVisitDataObjectGeneric>(); |
| 93 | |
| 94 | table_.template RegisterSpecializations<JSObjectVisitor, kVisitJSObject, |
| 95 | kVisitJSObjectGeneric>(); |
Ben Murdoch | c561043 | 2016-08-08 18:44:38 +0100 | [diff] [blame] | 96 | |
| 97 | // Not using specialized Api object visitor for newspace. |
| 98 | table_.template RegisterSpecializations<JSObjectVisitor, kVisitJSApiObject, |
| 99 | kVisitJSApiObjectGeneric>(); |
| 100 | |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 101 | table_.template RegisterSpecializations<StructVisitor, kVisitStruct, |
| 102 | kVisitStructGeneric>(); |
| 103 | } |
| 104 | |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 105 | template <typename StaticVisitor> |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 106 | int StaticNewSpaceVisitor<StaticVisitor>::VisitBytecodeArray( |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 107 | Map* map, HeapObject* object) { |
| 108 | VisitPointers( |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 109 | map->GetHeap(), object, |
| 110 | HeapObject::RawField(object, BytecodeArray::kConstantPoolOffset), |
Ben Murdoch | 097c5b2 | 2016-05-18 11:27:45 +0100 | [diff] [blame] | 111 | HeapObject::RawField(object, BytecodeArray::kFrameSizeOffset)); |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 112 | return reinterpret_cast<BytecodeArray*>(object)->BytecodeArraySize(); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 113 | } |
| 114 | |
| 115 | |
| 116 | template <typename StaticVisitor> |
| 117 | void StaticMarkingVisitor<StaticVisitor>::Initialize() { |
| 118 | table_.Register(kVisitShortcutCandidate, |
| 119 | &FixedBodyVisitor<StaticVisitor, ConsString::BodyDescriptor, |
| 120 | void>::Visit); |
| 121 | |
| 122 | table_.Register(kVisitConsString, |
| 123 | &FixedBodyVisitor<StaticVisitor, ConsString::BodyDescriptor, |
| 124 | void>::Visit); |
| 125 | |
| 126 | table_.Register(kVisitSlicedString, |
| 127 | &FixedBodyVisitor<StaticVisitor, SlicedString::BodyDescriptor, |
| 128 | void>::Visit); |
| 129 | |
| 130 | table_.Register( |
| 131 | kVisitSymbol, |
| 132 | &FixedBodyVisitor<StaticVisitor, Symbol::BodyDescriptor, void>::Visit); |
| 133 | |
| 134 | table_.Register(kVisitFixedArray, &FixedArrayVisitor::Visit); |
| 135 | |
| 136 | table_.Register(kVisitFixedDoubleArray, &DataObjectVisitor::Visit); |
| 137 | |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 138 | table_.Register( |
| 139 | kVisitFixedTypedArray, |
| 140 | &FlexibleBodyVisitor<StaticVisitor, FixedTypedArrayBase::BodyDescriptor, |
| 141 | void>::Visit); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 142 | |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 143 | table_.Register( |
| 144 | kVisitFixedFloat64Array, |
| 145 | &FlexibleBodyVisitor<StaticVisitor, FixedTypedArrayBase::BodyDescriptor, |
| 146 | void>::Visit); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 147 | |
| 148 | table_.Register(kVisitNativeContext, &VisitNativeContext); |
| 149 | |
| 150 | table_.Register(kVisitAllocationSite, &VisitAllocationSite); |
| 151 | |
| 152 | table_.Register(kVisitByteArray, &DataObjectVisitor::Visit); |
| 153 | |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 154 | table_.Register(kVisitBytecodeArray, &VisitBytecodeArray); |
| 155 | |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 156 | table_.Register(kVisitFreeSpace, &DataObjectVisitor::Visit); |
| 157 | |
| 158 | table_.Register(kVisitSeqOneByteString, &DataObjectVisitor::Visit); |
| 159 | |
| 160 | table_.Register(kVisitSeqTwoByteString, &DataObjectVisitor::Visit); |
| 161 | |
| 162 | table_.Register(kVisitJSWeakCollection, &VisitWeakCollection); |
| 163 | |
| 164 | table_.Register( |
| 165 | kVisitOddball, |
| 166 | &FixedBodyVisitor<StaticVisitor, Oddball::BodyDescriptor, void>::Visit); |
| 167 | |
| 168 | table_.Register(kVisitMap, &VisitMap); |
| 169 | |
| 170 | table_.Register(kVisitCode, &VisitCode); |
| 171 | |
| 172 | table_.Register(kVisitSharedFunctionInfo, &VisitSharedFunctionInfo); |
| 173 | |
| 174 | table_.Register(kVisitJSFunction, &VisitJSFunction); |
| 175 | |
Ben Murdoch | 61f157c | 2016-09-16 13:49:30 +0100 | [diff] [blame] | 176 | table_.Register( |
| 177 | kVisitJSArrayBuffer, |
| 178 | &FlexibleBodyVisitor<StaticVisitor, JSArrayBuffer::BodyDescriptor, |
| 179 | void>::Visit); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 180 | |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 181 | // Registration for kVisitJSRegExp is done by StaticVisitor. |
| 182 | |
| 183 | table_.Register( |
| 184 | kVisitCell, |
| 185 | &FixedBodyVisitor<StaticVisitor, Cell::BodyDescriptor, void>::Visit); |
| 186 | |
| 187 | table_.Register(kVisitPropertyCell, &VisitPropertyCell); |
| 188 | |
Emily Bernier | d0a1eb7 | 2015-03-24 16:35:39 -0400 | [diff] [blame] | 189 | table_.Register(kVisitWeakCell, &VisitWeakCell); |
| 190 | |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 191 | table_.Register(kVisitTransitionArray, &VisitTransitionArray); |
| 192 | |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 193 | table_.template RegisterSpecializations<DataObjectVisitor, kVisitDataObject, |
| 194 | kVisitDataObjectGeneric>(); |
| 195 | |
| 196 | table_.template RegisterSpecializations<JSObjectVisitor, kVisitJSObject, |
| 197 | kVisitJSObjectGeneric>(); |
| 198 | |
Ben Murdoch | c561043 | 2016-08-08 18:44:38 +0100 | [diff] [blame] | 199 | table_.template RegisterSpecializations<JSApiObjectVisitor, kVisitJSApiObject, |
| 200 | kVisitJSApiObjectGeneric>(); |
| 201 | |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 202 | table_.template RegisterSpecializations<StructObjectVisitor, kVisitStruct, |
| 203 | kVisitStructGeneric>(); |
| 204 | } |
| 205 | |
| 206 | |
| 207 | template <typename StaticVisitor> |
| 208 | void StaticMarkingVisitor<StaticVisitor>::VisitCodeEntry( |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 209 | Heap* heap, HeapObject* object, Address entry_address) { |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 210 | Code* code = Code::cast(Code::GetObjectFromEntryAddress(entry_address)); |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 211 | heap->mark_compact_collector()->RecordCodeEntrySlot(object, entry_address, |
| 212 | code); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 213 | StaticVisitor::MarkObject(heap, code); |
| 214 | } |
| 215 | |
| 216 | |
| 217 | template <typename StaticVisitor> |
| 218 | void StaticMarkingVisitor<StaticVisitor>::VisitEmbeddedPointer( |
| 219 | Heap* heap, RelocInfo* rinfo) { |
| 220 | DCHECK(rinfo->rmode() == RelocInfo::EMBEDDED_OBJECT); |
| 221 | HeapObject* object = HeapObject::cast(rinfo->target_object()); |
Ben Murdoch | da12d29 | 2016-06-02 14:46:10 +0100 | [diff] [blame] | 222 | Code* host = rinfo->host(); |
| 223 | heap->mark_compact_collector()->RecordRelocSlot(host, rinfo, object); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 224 | // TODO(ulan): It could be better to record slots only for strongly embedded |
| 225 | // objects here and record slots for weakly embedded object during clearing |
| 226 | // of non-live references in mark-compact. |
Ben Murdoch | da12d29 | 2016-06-02 14:46:10 +0100 | [diff] [blame] | 227 | if (!host->IsWeakObject(object)) { |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 228 | StaticVisitor::MarkObject(heap, object); |
| 229 | } |
| 230 | } |
| 231 | |
| 232 | |
| 233 | template <typename StaticVisitor> |
| 234 | void StaticMarkingVisitor<StaticVisitor>::VisitCell(Heap* heap, |
| 235 | RelocInfo* rinfo) { |
| 236 | DCHECK(rinfo->rmode() == RelocInfo::CELL); |
| 237 | Cell* cell = rinfo->target_cell(); |
Ben Murdoch | da12d29 | 2016-06-02 14:46:10 +0100 | [diff] [blame] | 238 | Code* host = rinfo->host(); |
| 239 | heap->mark_compact_collector()->RecordRelocSlot(host, rinfo, cell); |
| 240 | if (!host->IsWeakObject(cell)) { |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 241 | StaticVisitor::MarkObject(heap, cell); |
| 242 | } |
| 243 | } |
| 244 | |
| 245 | |
| 246 | template <typename StaticVisitor> |
| 247 | void StaticMarkingVisitor<StaticVisitor>::VisitDebugTarget(Heap* heap, |
| 248 | RelocInfo* rinfo) { |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 249 | DCHECK(RelocInfo::IsDebugBreakSlot(rinfo->rmode()) && |
| 250 | rinfo->IsPatchedDebugBreakSlotSequence()); |
| 251 | Code* target = Code::GetCodeFromTargetAddress(rinfo->debug_call_address()); |
Ben Murdoch | da12d29 | 2016-06-02 14:46:10 +0100 | [diff] [blame] | 252 | Code* host = rinfo->host(); |
| 253 | heap->mark_compact_collector()->RecordRelocSlot(host, rinfo, target); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 254 | StaticVisitor::MarkObject(heap, target); |
| 255 | } |
| 256 | |
| 257 | |
| 258 | template <typename StaticVisitor> |
| 259 | void StaticMarkingVisitor<StaticVisitor>::VisitCodeTarget(Heap* heap, |
| 260 | RelocInfo* rinfo) { |
| 261 | DCHECK(RelocInfo::IsCodeTarget(rinfo->rmode())); |
| 262 | Code* target = Code::GetCodeFromTargetAddress(rinfo->target_address()); |
| 263 | // Monomorphic ICs are preserved when possible, but need to be flushed |
| 264 | // when they might be keeping a Context alive, or when the heap is about |
| 265 | // to be serialized. |
| 266 | if (FLAG_cleanup_code_caches_at_gc && target->is_inline_cache_stub() && |
Ben Murdoch | c561043 | 2016-08-08 18:44:38 +0100 | [diff] [blame] | 267 | (heap->isolate()->serializer_enabled() || |
| 268 | target->ic_age() != heap->global_ic_age())) { |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 269 | ICUtility::Clear(heap->isolate(), rinfo->pc(), |
| 270 | rinfo->host()->constant_pool()); |
| 271 | target = Code::GetCodeFromTargetAddress(rinfo->target_address()); |
| 272 | } |
Ben Murdoch | da12d29 | 2016-06-02 14:46:10 +0100 | [diff] [blame] | 273 | Code* host = rinfo->host(); |
| 274 | heap->mark_compact_collector()->RecordRelocSlot(host, rinfo, target); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 275 | StaticVisitor::MarkObject(heap, target); |
| 276 | } |
| 277 | |
| 278 | |
| 279 | template <typename StaticVisitor> |
| 280 | void StaticMarkingVisitor<StaticVisitor>::VisitCodeAgeSequence( |
| 281 | Heap* heap, RelocInfo* rinfo) { |
| 282 | DCHECK(RelocInfo::IsCodeAgeSequence(rinfo->rmode())); |
| 283 | Code* target = rinfo->code_age_stub(); |
| 284 | DCHECK(target != NULL); |
Ben Murdoch | da12d29 | 2016-06-02 14:46:10 +0100 | [diff] [blame] | 285 | Code* host = rinfo->host(); |
| 286 | heap->mark_compact_collector()->RecordRelocSlot(host, rinfo, target); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 287 | StaticVisitor::MarkObject(heap, target); |
| 288 | } |
| 289 | |
| 290 | |
| 291 | template <typename StaticVisitor> |
| 292 | void StaticMarkingVisitor<StaticVisitor>::VisitNativeContext( |
| 293 | Map* map, HeapObject* object) { |
| 294 | FixedBodyVisitor<StaticVisitor, Context::MarkCompactBodyDescriptor, |
| 295 | void>::Visit(map, object); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 296 | } |
| 297 | |
| 298 | |
| 299 | template <typename StaticVisitor> |
| 300 | void StaticMarkingVisitor<StaticVisitor>::VisitMap(Map* map, |
| 301 | HeapObject* object) { |
| 302 | Heap* heap = map->GetHeap(); |
| 303 | Map* map_object = Map::cast(object); |
| 304 | |
| 305 | // Clears the cache of ICs related to this map. |
| 306 | if (FLAG_cleanup_code_caches_at_gc) { |
| 307 | map_object->ClearCodeCache(heap); |
| 308 | } |
| 309 | |
| 310 | // When map collection is enabled we have to mark through map's transitions |
| 311 | // and back pointers in a special way to make these links weak. |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 312 | if (map_object->CanTransition()) { |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 313 | MarkMapContents(heap, map_object); |
| 314 | } else { |
| 315 | StaticVisitor::VisitPointers( |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 316 | heap, object, |
| 317 | HeapObject::RawField(object, Map::kPointerFieldsBeginOffset), |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 318 | HeapObject::RawField(object, Map::kPointerFieldsEndOffset)); |
| 319 | } |
| 320 | } |
| 321 | |
| 322 | |
| 323 | template <typename StaticVisitor> |
| 324 | void StaticMarkingVisitor<StaticVisitor>::VisitPropertyCell( |
| 325 | Map* map, HeapObject* object) { |
| 326 | Heap* heap = map->GetHeap(); |
| 327 | |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 328 | StaticVisitor::VisitPointers( |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 329 | heap, object, |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 330 | HeapObject::RawField(object, PropertyCell::kPointerFieldsBeginOffset), |
| 331 | HeapObject::RawField(object, PropertyCell::kPointerFieldsEndOffset)); |
| 332 | } |
| 333 | |
| 334 | |
| 335 | template <typename StaticVisitor> |
Emily Bernier | d0a1eb7 | 2015-03-24 16:35:39 -0400 | [diff] [blame] | 336 | void StaticMarkingVisitor<StaticVisitor>::VisitWeakCell(Map* map, |
| 337 | HeapObject* object) { |
| 338 | Heap* heap = map->GetHeap(); |
| 339 | WeakCell* weak_cell = reinterpret_cast<WeakCell*>(object); |
Emily Bernier | d0a1eb7 | 2015-03-24 16:35:39 -0400 | [diff] [blame] | 340 | // Enqueue weak cell in linked list of encountered weak collections. |
| 341 | // We can ignore weak cells with cleared values because they will always |
| 342 | // contain smi zero. |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 343 | if (weak_cell->next_cleared() && !weak_cell->cleared()) { |
| 344 | HeapObject* value = HeapObject::cast(weak_cell->value()); |
| 345 | if (MarkCompactCollector::IsMarked(value)) { |
| 346 | // Weak cells with live values are directly processed here to reduce |
| 347 | // the processing time of weak cells during the main GC pause. |
| 348 | Object** slot = HeapObject::RawField(weak_cell, WeakCell::kValueOffset); |
| 349 | map->GetHeap()->mark_compact_collector()->RecordSlot(weak_cell, slot, |
| 350 | *slot); |
| 351 | } else { |
| 352 | // If we do not know about liveness of values of weak cells, we have to |
| 353 | // process them when we know the liveness of the whole transitive |
| 354 | // closure. |
| 355 | weak_cell->set_next(heap->encountered_weak_cells(), |
| 356 | UPDATE_WEAK_WRITE_BARRIER); |
| 357 | heap->set_encountered_weak_cells(weak_cell); |
| 358 | } |
| 359 | } |
| 360 | } |
| 361 | |
| 362 | |
| 363 | template <typename StaticVisitor> |
| 364 | void StaticMarkingVisitor<StaticVisitor>::VisitTransitionArray( |
| 365 | Map* map, HeapObject* object) { |
| 366 | TransitionArray* array = TransitionArray::cast(object); |
| 367 | Heap* heap = array->GetHeap(); |
| 368 | // Visit strong references. |
| 369 | if (array->HasPrototypeTransitions()) { |
| 370 | StaticVisitor::VisitPointer(heap, array, |
| 371 | array->GetPrototypeTransitionsSlot()); |
| 372 | } |
| 373 | int num_transitions = TransitionArray::NumberOfTransitions(array); |
| 374 | for (int i = 0; i < num_transitions; ++i) { |
| 375 | StaticVisitor::VisitPointer(heap, array, array->GetKeySlot(i)); |
| 376 | } |
| 377 | // Enqueue the array in linked list of encountered transition arrays if it is |
| 378 | // not already in the list. |
Ben Murdoch | 61f157c | 2016-09-16 13:49:30 +0100 | [diff] [blame] | 379 | if (array->next_link()->IsUndefined(heap->isolate())) { |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 380 | Heap* heap = map->GetHeap(); |
| 381 | array->set_next_link(heap->encountered_transition_arrays(), |
| 382 | UPDATE_WEAK_WRITE_BARRIER); |
| 383 | heap->set_encountered_transition_arrays(array); |
Emily Bernier | d0a1eb7 | 2015-03-24 16:35:39 -0400 | [diff] [blame] | 384 | } |
| 385 | } |
| 386 | |
| 387 | |
| 388 | template <typename StaticVisitor> |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 389 | void StaticMarkingVisitor<StaticVisitor>::VisitAllocationSite( |
| 390 | Map* map, HeapObject* object) { |
| 391 | Heap* heap = map->GetHeap(); |
| 392 | |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 393 | StaticVisitor::VisitPointers( |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 394 | heap, object, |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 395 | HeapObject::RawField(object, AllocationSite::kPointerFieldsBeginOffset), |
| 396 | HeapObject::RawField(object, AllocationSite::kPointerFieldsEndOffset)); |
| 397 | } |
| 398 | |
| 399 | |
| 400 | template <typename StaticVisitor> |
| 401 | void StaticMarkingVisitor<StaticVisitor>::VisitWeakCollection( |
| 402 | Map* map, HeapObject* object) { |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 403 | typedef FlexibleBodyVisitor<StaticVisitor, |
| 404 | JSWeakCollection::BodyDescriptorWeak, |
| 405 | void> JSWeakCollectionBodyVisitor; |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 406 | Heap* heap = map->GetHeap(); |
| 407 | JSWeakCollection* weak_collection = |
| 408 | reinterpret_cast<JSWeakCollection*>(object); |
| 409 | |
| 410 | // Enqueue weak collection in linked list of encountered weak collections. |
| 411 | if (weak_collection->next() == heap->undefined_value()) { |
| 412 | weak_collection->set_next(heap->encountered_weak_collections()); |
| 413 | heap->set_encountered_weak_collections(weak_collection); |
| 414 | } |
| 415 | |
| 416 | // Skip visiting the backing hash table containing the mappings and the |
| 417 | // pointer to the other enqueued weak collections, both are post-processed. |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 418 | JSWeakCollectionBodyVisitor::Visit(map, object); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 419 | |
| 420 | // Partially initialized weak collection is enqueued, but table is ignored. |
| 421 | if (!weak_collection->table()->IsHashTable()) return; |
| 422 | |
| 423 | // Mark the backing hash table without pushing it on the marking stack. |
| 424 | Object** slot = HeapObject::RawField(object, JSWeakCollection::kTableOffset); |
| 425 | HeapObject* obj = HeapObject::cast(*slot); |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 426 | heap->mark_compact_collector()->RecordSlot(object, slot, obj); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 427 | StaticVisitor::MarkObjectWithoutPush(heap, obj); |
| 428 | } |
| 429 | |
| 430 | |
| 431 | template <typename StaticVisitor> |
| 432 | void StaticMarkingVisitor<StaticVisitor>::VisitCode(Map* map, |
| 433 | HeapObject* object) { |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 434 | typedef FlexibleBodyVisitor<StaticVisitor, Code::BodyDescriptor, void> |
| 435 | CodeBodyVisitor; |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 436 | Heap* heap = map->GetHeap(); |
| 437 | Code* code = Code::cast(object); |
| 438 | if (FLAG_age_code && !heap->isolate()->serializer_enabled()) { |
| 439 | code->MakeOlder(heap->mark_compact_collector()->marking_parity()); |
| 440 | } |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 441 | CodeBodyVisitor::Visit(map, object); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 442 | } |
| 443 | |
| 444 | |
| 445 | template <typename StaticVisitor> |
| 446 | void StaticMarkingVisitor<StaticVisitor>::VisitSharedFunctionInfo( |
| 447 | Map* map, HeapObject* object) { |
| 448 | Heap* heap = map->GetHeap(); |
| 449 | SharedFunctionInfo* shared = SharedFunctionInfo::cast(object); |
| 450 | if (shared->ic_age() != heap->global_ic_age()) { |
| 451 | shared->ResetForNewContext(heap->global_ic_age()); |
| 452 | } |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 453 | if (FLAG_flush_optimized_code_cache) { |
| 454 | if (!shared->OptimizedCodeMapIsCleared()) { |
| 455 | // Always flush the optimized code map if requested by flag. |
| 456 | shared->ClearOptimizedCodeMap(); |
| 457 | } |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 458 | } |
| 459 | MarkCompactCollector* collector = heap->mark_compact_collector(); |
| 460 | if (collector->is_code_flushing_enabled()) { |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 461 | if (IsFlushable(heap, shared)) { |
| 462 | // This function's code looks flushable. But we have to postpone |
| 463 | // the decision until we see all functions that point to the same |
| 464 | // SharedFunctionInfo because some of them might be optimized. |
| 465 | // That would also make the non-optimized version of the code |
| 466 | // non-flushable, because it is required for bailing out from |
| 467 | // optimized code. |
| 468 | collector->code_flusher()->AddCandidate(shared); |
| 469 | // Treat the reference to the code object weakly. |
| 470 | VisitSharedFunctionInfoWeakCode(heap, object); |
| 471 | return; |
| 472 | } |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 473 | } |
| 474 | VisitSharedFunctionInfoStrongCode(heap, object); |
| 475 | } |
| 476 | |
| 477 | |
| 478 | template <typename StaticVisitor> |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 479 | void StaticMarkingVisitor<StaticVisitor>::VisitJSFunction(Map* map, |
| 480 | HeapObject* object) { |
| 481 | Heap* heap = map->GetHeap(); |
| 482 | JSFunction* function = JSFunction::cast(object); |
Ben Murdoch | 61f157c | 2016-09-16 13:49:30 +0100 | [diff] [blame] | 483 | if (FLAG_cleanup_code_caches_at_gc) { |
| 484 | function->ClearTypeFeedbackInfoAtGCTime(); |
| 485 | } |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 486 | MarkCompactCollector* collector = heap->mark_compact_collector(); |
| 487 | if (collector->is_code_flushing_enabled()) { |
| 488 | if (IsFlushable(heap, function)) { |
| 489 | // This function's code looks flushable. But we have to postpone |
| 490 | // the decision until we see all functions that point to the same |
| 491 | // SharedFunctionInfo because some of them might be optimized. |
| 492 | // That would also make the non-optimized version of the code |
| 493 | // non-flushable, because it is required for bailing out from |
| 494 | // optimized code. |
| 495 | collector->code_flusher()->AddCandidate(function); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 496 | // Treat the reference to the code object weakly. |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 497 | VisitJSFunctionWeakCode(map, object); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 498 | return; |
| 499 | } else { |
| 500 | // Visit all unoptimized code objects to prevent flushing them. |
| 501 | StaticVisitor::MarkObject(heap, function->shared()->code()); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 502 | } |
| 503 | } |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 504 | VisitJSFunctionStrongCode(map, object); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 505 | } |
| 506 | |
| 507 | |
| 508 | template <typename StaticVisitor> |
| 509 | void StaticMarkingVisitor<StaticVisitor>::VisitJSRegExp(Map* map, |
| 510 | HeapObject* object) { |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 511 | JSObjectVisitor::Visit(map, object); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 512 | } |
| 513 | |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 514 | template <typename StaticVisitor> |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 515 | void StaticMarkingVisitor<StaticVisitor>::VisitBytecodeArray( |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 516 | Map* map, HeapObject* object) { |
| 517 | StaticVisitor::VisitPointers( |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 518 | map->GetHeap(), object, |
| 519 | HeapObject::RawField(object, BytecodeArray::kConstantPoolOffset), |
Ben Murdoch | 097c5b2 | 2016-05-18 11:27:45 +0100 | [diff] [blame] | 520 | HeapObject::RawField(object, BytecodeArray::kFrameSizeOffset)); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 521 | } |
| 522 | |
| 523 | |
| 524 | template <typename StaticVisitor> |
| 525 | void StaticMarkingVisitor<StaticVisitor>::MarkMapContents(Heap* heap, |
| 526 | Map* map) { |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 527 | // Since descriptor arrays are potentially shared, ensure that only the |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 528 | // descriptors that belong to this map are marked. The first time a non-empty |
| 529 | // descriptor array is marked, its header is also visited. The slot holding |
| 530 | // the descriptor array will be implicitly recorded when the pointer fields of |
| 531 | // this map are visited. Prototype maps don't keep track of transitions, so |
| 532 | // just mark the entire descriptor array. |
| 533 | if (!map->is_prototype_map()) { |
| 534 | DescriptorArray* descriptors = map->instance_descriptors(); |
| 535 | if (StaticVisitor::MarkObjectWithoutPush(heap, descriptors) && |
| 536 | descriptors->length() > 0) { |
| 537 | StaticVisitor::VisitPointers(heap, descriptors, |
| 538 | descriptors->GetFirstElementAddress(), |
| 539 | descriptors->GetDescriptorEndSlot(0)); |
| 540 | } |
| 541 | int start = 0; |
| 542 | int end = map->NumberOfOwnDescriptors(); |
| 543 | if (start < end) { |
| 544 | StaticVisitor::VisitPointers(heap, descriptors, |
| 545 | descriptors->GetDescriptorStartSlot(start), |
| 546 | descriptors->GetDescriptorEndSlot(end)); |
| 547 | } |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 548 | } |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 549 | |
| 550 | // Mark the pointer fields of the Map. Since the transitions array has |
| 551 | // been marked already, it is fine that one of these fields contains a |
| 552 | // pointer to it. |
| 553 | StaticVisitor::VisitPointers( |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 554 | heap, map, HeapObject::RawField(map, Map::kPointerFieldsBeginOffset), |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 555 | HeapObject::RawField(map, Map::kPointerFieldsEndOffset)); |
| 556 | } |
| 557 | |
| 558 | |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 559 | inline static bool HasSourceCode(Heap* heap, SharedFunctionInfo* info) { |
| 560 | Object* undefined = heap->undefined_value(); |
| 561 | return (info->script() != undefined) && |
| 562 | (reinterpret_cast<Script*>(info->script())->source() != undefined); |
| 563 | } |
| 564 | |
| 565 | |
| 566 | template <typename StaticVisitor> |
| 567 | bool StaticMarkingVisitor<StaticVisitor>::IsFlushable(Heap* heap, |
| 568 | JSFunction* function) { |
| 569 | SharedFunctionInfo* shared_info = function->shared(); |
| 570 | |
| 571 | // Code is either on stack, in compilation cache or referenced |
| 572 | // by optimized version of function. |
| 573 | MarkBit code_mark = Marking::MarkBitFrom(function->code()); |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 574 | if (Marking::IsBlackOrGrey(code_mark)) { |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 575 | return false; |
| 576 | } |
| 577 | |
| 578 | // We do not (yet) flush code for optimized functions. |
| 579 | if (function->code() != shared_info->code()) { |
| 580 | return false; |
| 581 | } |
| 582 | |
| 583 | // Check age of optimized code. |
| 584 | if (FLAG_age_code && !function->code()->IsOld()) { |
| 585 | return false; |
| 586 | } |
| 587 | |
| 588 | return IsFlushable(heap, shared_info); |
| 589 | } |
| 590 | |
| 591 | |
| 592 | template <typename StaticVisitor> |
| 593 | bool StaticMarkingVisitor<StaticVisitor>::IsFlushable( |
| 594 | Heap* heap, SharedFunctionInfo* shared_info) { |
| 595 | // Code is either on stack, in compilation cache or referenced |
| 596 | // by optimized version of function. |
| 597 | MarkBit code_mark = Marking::MarkBitFrom(shared_info->code()); |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 598 | if (Marking::IsBlackOrGrey(code_mark)) { |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 599 | return false; |
| 600 | } |
| 601 | |
| 602 | // The function must be compiled and have the source code available, |
| 603 | // to be able to recompile it in case we need the function again. |
| 604 | if (!(shared_info->is_compiled() && HasSourceCode(heap, shared_info))) { |
| 605 | return false; |
| 606 | } |
| 607 | |
| 608 | // We never flush code for API functions. |
Ben Murdoch | c561043 | 2016-08-08 18:44:38 +0100 | [diff] [blame] | 609 | if (shared_info->IsApiFunction()) { |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 610 | return false; |
| 611 | } |
| 612 | |
| 613 | // Only flush code for functions. |
| 614 | if (shared_info->code()->kind() != Code::FUNCTION) { |
| 615 | return false; |
| 616 | } |
| 617 | |
| 618 | // Function must be lazy compilable. |
| 619 | if (!shared_info->allows_lazy_compilation()) { |
| 620 | return false; |
| 621 | } |
| 622 | |
Ben Murdoch | 61f157c | 2016-09-16 13:49:30 +0100 | [diff] [blame] | 623 | // We do not (yet?) flush code for generator functions, or async functions, |
| 624 | // because we don't know if there are still live activations |
| 625 | // (generator objects) on the heap. |
| 626 | if (shared_info->is_resumable()) { |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 627 | return false; |
| 628 | } |
| 629 | |
| 630 | // If this is a full script wrapped in a function we do not flush the code. |
| 631 | if (shared_info->is_toplevel()) { |
| 632 | return false; |
| 633 | } |
| 634 | |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 635 | // The function must not be a builtin. |
| 636 | if (shared_info->IsBuiltin()) { |
| 637 | return false; |
| 638 | } |
| 639 | |
| 640 | // Maintain debug break slots in the code. |
| 641 | if (shared_info->HasDebugCode()) { |
| 642 | return false; |
| 643 | } |
| 644 | |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 645 | // If this is a function initialized with %SetCode then the one-to-one |
| 646 | // relation between SharedFunctionInfo and Code is broken. |
| 647 | if (shared_info->dont_flush()) { |
| 648 | return false; |
| 649 | } |
| 650 | |
| 651 | // Check age of code. If code aging is disabled we never flush. |
| 652 | if (!FLAG_age_code || !shared_info->code()->IsOld()) { |
| 653 | return false; |
| 654 | } |
| 655 | |
| 656 | return true; |
| 657 | } |
| 658 | |
| 659 | |
| 660 | template <typename StaticVisitor> |
| 661 | void StaticMarkingVisitor<StaticVisitor>::VisitSharedFunctionInfoStrongCode( |
| 662 | Heap* heap, HeapObject* object) { |
| 663 | Object** start_slot = HeapObject::RawField( |
| 664 | object, SharedFunctionInfo::BodyDescriptor::kStartOffset); |
| 665 | Object** end_slot = HeapObject::RawField( |
| 666 | object, SharedFunctionInfo::BodyDescriptor::kEndOffset); |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 667 | StaticVisitor::VisitPointers(heap, object, start_slot, end_slot); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 668 | } |
| 669 | |
| 670 | |
| 671 | template <typename StaticVisitor> |
| 672 | void StaticMarkingVisitor<StaticVisitor>::VisitSharedFunctionInfoWeakCode( |
| 673 | Heap* heap, HeapObject* object) { |
| 674 | Object** name_slot = |
| 675 | HeapObject::RawField(object, SharedFunctionInfo::kNameOffset); |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 676 | StaticVisitor::VisitPointer(heap, object, name_slot); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 677 | |
| 678 | // Skip visiting kCodeOffset as it is treated weakly here. |
| 679 | STATIC_ASSERT(SharedFunctionInfo::kNameOffset + kPointerSize == |
| 680 | SharedFunctionInfo::kCodeOffset); |
| 681 | STATIC_ASSERT(SharedFunctionInfo::kCodeOffset + kPointerSize == |
| 682 | SharedFunctionInfo::kOptimizedCodeMapOffset); |
| 683 | |
| 684 | Object** start_slot = |
| 685 | HeapObject::RawField(object, SharedFunctionInfo::kOptimizedCodeMapOffset); |
| 686 | Object** end_slot = HeapObject::RawField( |
| 687 | object, SharedFunctionInfo::BodyDescriptor::kEndOffset); |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 688 | StaticVisitor::VisitPointers(heap, object, start_slot, end_slot); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 689 | } |
| 690 | |
| 691 | |
| 692 | template <typename StaticVisitor> |
| 693 | void StaticMarkingVisitor<StaticVisitor>::VisitJSFunctionStrongCode( |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 694 | Map* map, HeapObject* object) { |
| 695 | typedef FlexibleBodyVisitor<StaticVisitor, |
| 696 | JSFunction::BodyDescriptorStrongCode, |
| 697 | void> JSFunctionStrongCodeBodyVisitor; |
| 698 | JSFunctionStrongCodeBodyVisitor::Visit(map, object); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 699 | } |
| 700 | |
| 701 | |
| 702 | template <typename StaticVisitor> |
| 703 | void StaticMarkingVisitor<StaticVisitor>::VisitJSFunctionWeakCode( |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 704 | Map* map, HeapObject* object) { |
| 705 | typedef FlexibleBodyVisitor<StaticVisitor, JSFunction::BodyDescriptorWeakCode, |
| 706 | void> JSFunctionWeakCodeBodyVisitor; |
| 707 | JSFunctionWeakCodeBodyVisitor::Visit(map, object); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 708 | } |
| 709 | |
| 710 | |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 711 | } // namespace internal |
| 712 | } // namespace v8 |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 713 | |
| 714 | #endif // V8_OBJECTS_VISITING_INL_H_ |