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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 | 8 |
9 namespace v8 { | 9 namespace v8 { |
10 namespace internal { | 10 namespace internal { |
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229 Heap* heap, Address entry_address) { | 229 Heap* heap, Address entry_address) { |
230 Code* code = Code::cast(Code::GetObjectFromEntryAddress(entry_address)); | 230 Code* code = Code::cast(Code::GetObjectFromEntryAddress(entry_address)); |
231 heap->mark_compact_collector()->RecordCodeEntrySlot(entry_address, code); | 231 heap->mark_compact_collector()->RecordCodeEntrySlot(entry_address, code); |
232 StaticVisitor::MarkObject(heap, code); | 232 StaticVisitor::MarkObject(heap, code); |
233 } | 233 } |
234 | 234 |
235 | 235 |
236 template<typename StaticVisitor> | 236 template<typename StaticVisitor> |
237 void StaticMarkingVisitor<StaticVisitor>::VisitEmbeddedPointer( | 237 void StaticMarkingVisitor<StaticVisitor>::VisitEmbeddedPointer( |
238 Heap* heap, RelocInfo* rinfo) { | 238 Heap* heap, RelocInfo* rinfo) { |
239 ASSERT(rinfo->rmode() == RelocInfo::EMBEDDED_OBJECT); | 239 DCHECK(rinfo->rmode() == RelocInfo::EMBEDDED_OBJECT); |
240 HeapObject* object = HeapObject::cast(rinfo->target_object()); | 240 HeapObject* object = HeapObject::cast(rinfo->target_object()); |
241 heap->mark_compact_collector()->RecordRelocSlot(rinfo, object); | 241 heap->mark_compact_collector()->RecordRelocSlot(rinfo, object); |
242 // TODO(ulan): It could be better to record slots only for strongly embedded | 242 // TODO(ulan): It could be better to record slots only for strongly embedded |
243 // objects here and record slots for weakly embedded object during clearing | 243 // objects here and record slots for weakly embedded object during clearing |
244 // of non-live references in mark-compact. | 244 // of non-live references in mark-compact. |
245 if (!rinfo->host()->IsWeakObject(object)) { | 245 if (!rinfo->host()->IsWeakObject(object)) { |
246 StaticVisitor::MarkObject(heap, object); | 246 StaticVisitor::MarkObject(heap, object); |
247 } | 247 } |
248 } | 248 } |
249 | 249 |
250 | 250 |
251 template<typename StaticVisitor> | 251 template<typename StaticVisitor> |
252 void StaticMarkingVisitor<StaticVisitor>::VisitCell( | 252 void StaticMarkingVisitor<StaticVisitor>::VisitCell( |
253 Heap* heap, RelocInfo* rinfo) { | 253 Heap* heap, RelocInfo* rinfo) { |
254 ASSERT(rinfo->rmode() == RelocInfo::CELL); | 254 DCHECK(rinfo->rmode() == RelocInfo::CELL); |
255 Cell* cell = rinfo->target_cell(); | 255 Cell* cell = rinfo->target_cell(); |
256 // No need to record slots because the cell space is not compacted during GC. | 256 // No need to record slots because the cell space is not compacted during GC. |
257 if (!rinfo->host()->IsWeakObject(cell)) { | 257 if (!rinfo->host()->IsWeakObject(cell)) { |
258 StaticVisitor::MarkObject(heap, cell); | 258 StaticVisitor::MarkObject(heap, cell); |
259 } | 259 } |
260 } | 260 } |
261 | 261 |
262 | 262 |
263 template<typename StaticVisitor> | 263 template<typename StaticVisitor> |
264 void StaticMarkingVisitor<StaticVisitor>::VisitDebugTarget( | 264 void StaticMarkingVisitor<StaticVisitor>::VisitDebugTarget( |
265 Heap* heap, RelocInfo* rinfo) { | 265 Heap* heap, RelocInfo* rinfo) { |
266 ASSERT((RelocInfo::IsJSReturn(rinfo->rmode()) && | 266 DCHECK((RelocInfo::IsJSReturn(rinfo->rmode()) && |
267 rinfo->IsPatchedReturnSequence()) || | 267 rinfo->IsPatchedReturnSequence()) || |
268 (RelocInfo::IsDebugBreakSlot(rinfo->rmode()) && | 268 (RelocInfo::IsDebugBreakSlot(rinfo->rmode()) && |
269 rinfo->IsPatchedDebugBreakSlotSequence())); | 269 rinfo->IsPatchedDebugBreakSlotSequence())); |
270 Code* target = Code::GetCodeFromTargetAddress(rinfo->call_address()); | 270 Code* target = Code::GetCodeFromTargetAddress(rinfo->call_address()); |
271 heap->mark_compact_collector()->RecordRelocSlot(rinfo, target); | 271 heap->mark_compact_collector()->RecordRelocSlot(rinfo, target); |
272 StaticVisitor::MarkObject(heap, target); | 272 StaticVisitor::MarkObject(heap, target); |
273 } | 273 } |
274 | 274 |
275 | 275 |
276 template<typename StaticVisitor> | 276 template<typename StaticVisitor> |
277 void StaticMarkingVisitor<StaticVisitor>::VisitCodeTarget( | 277 void StaticMarkingVisitor<StaticVisitor>::VisitCodeTarget( |
278 Heap* heap, RelocInfo* rinfo) { | 278 Heap* heap, RelocInfo* rinfo) { |
279 ASSERT(RelocInfo::IsCodeTarget(rinfo->rmode())); | 279 DCHECK(RelocInfo::IsCodeTarget(rinfo->rmode())); |
280 Code* target = Code::GetCodeFromTargetAddress(rinfo->target_address()); | 280 Code* target = Code::GetCodeFromTargetAddress(rinfo->target_address()); |
281 // Monomorphic ICs are preserved when possible, but need to be flushed | 281 // Monomorphic ICs are preserved when possible, but need to be flushed |
282 // when they might be keeping a Context alive, or when the heap is about | 282 // when they might be keeping a Context alive, or when the heap is about |
283 // to be serialized. | 283 // to be serialized. |
284 if (FLAG_cleanup_code_caches_at_gc && target->is_inline_cache_stub() | 284 if (FLAG_cleanup_code_caches_at_gc && target->is_inline_cache_stub() |
285 && (target->ic_state() == MEGAMORPHIC || target->ic_state() == GENERIC || | 285 && (target->ic_state() == MEGAMORPHIC || target->ic_state() == GENERIC || |
286 target->ic_state() == POLYMORPHIC || heap->flush_monomorphic_ics() || | 286 target->ic_state() == POLYMORPHIC || heap->flush_monomorphic_ics() || |
287 heap->isolate()->serializer_enabled() || | 287 heap->isolate()->serializer_enabled() || |
288 target->ic_age() != heap->global_ic_age() || | 288 target->ic_age() != heap->global_ic_age() || |
289 target->is_invalidated_weak_stub())) { | 289 target->is_invalidated_weak_stub())) { |
290 IC::Clear(heap->isolate(), rinfo->pc(), rinfo->host()->constant_pool()); | 290 IC::Clear(heap->isolate(), rinfo->pc(), rinfo->host()->constant_pool()); |
291 target = Code::GetCodeFromTargetAddress(rinfo->target_address()); | 291 target = Code::GetCodeFromTargetAddress(rinfo->target_address()); |
292 } | 292 } |
293 heap->mark_compact_collector()->RecordRelocSlot(rinfo, target); | 293 heap->mark_compact_collector()->RecordRelocSlot(rinfo, target); |
294 StaticVisitor::MarkObject(heap, target); | 294 StaticVisitor::MarkObject(heap, target); |
295 } | 295 } |
296 | 296 |
297 | 297 |
298 template<typename StaticVisitor> | 298 template<typename StaticVisitor> |
299 void StaticMarkingVisitor<StaticVisitor>::VisitCodeAgeSequence( | 299 void StaticMarkingVisitor<StaticVisitor>::VisitCodeAgeSequence( |
300 Heap* heap, RelocInfo* rinfo) { | 300 Heap* heap, RelocInfo* rinfo) { |
301 ASSERT(RelocInfo::IsCodeAgeSequence(rinfo->rmode())); | 301 DCHECK(RelocInfo::IsCodeAgeSequence(rinfo->rmode())); |
302 Code* target = rinfo->code_age_stub(); | 302 Code* target = rinfo->code_age_stub(); |
303 ASSERT(target != NULL); | 303 DCHECK(target != NULL); |
304 heap->mark_compact_collector()->RecordRelocSlot(rinfo, target); | 304 heap->mark_compact_collector()->RecordRelocSlot(rinfo, target); |
305 StaticVisitor::MarkObject(heap, target); | 305 StaticVisitor::MarkObject(heap, target); |
306 } | 306 } |
307 | 307 |
308 | 308 |
309 template<typename StaticVisitor> | 309 template<typename StaticVisitor> |
310 void StaticMarkingVisitor<StaticVisitor>::VisitNativeContext( | 310 void StaticMarkingVisitor<StaticVisitor>::VisitNativeContext( |
311 Map* map, HeapObject* object) { | 311 Map* map, HeapObject* object) { |
312 FixedBodyVisitor<StaticVisitor, | 312 FixedBodyVisitor<StaticVisitor, |
313 Context::MarkCompactBodyDescriptor, | 313 Context::MarkCompactBodyDescriptor, |
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962 RelocIterator it(this, mode_mask); | 962 RelocIterator it(this, mode_mask); |
963 for (; !it.done(); it.next()) { | 963 for (; !it.done(); it.next()) { |
964 it.rinfo()->template Visit<StaticVisitor>(heap); | 964 it.rinfo()->template Visit<StaticVisitor>(heap); |
965 } | 965 } |
966 } | 966 } |
967 | 967 |
968 | 968 |
969 } } // namespace v8::internal | 969 } } // namespace v8::internal |
970 | 970 |
971 #endif // V8_OBJECTS_VISITING_INL_H_ | 971 #endif // V8_OBJECTS_VISITING_INL_H_ |
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