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1 // Copyright (c) 2012, the Dart project authors. Please see the AUTHORS file | 1 // Copyright (c) 2012, the Dart project authors. Please see the AUTHORS file |
2 // for details. All rights reserved. Use of this source code is governed by a | 2 // for details. All rights reserved. Use of this source code is governed by a |
3 // BSD-style license that can be found in the LICENSE file. | 3 // BSD-style license that can be found in the LICENSE file. |
4 | 4 |
5 #include "vm/raw_object.h" | 5 #include "vm/raw_object.h" |
6 | 6 |
7 #include "vm/class_table.h" | 7 #include "vm/class_table.h" |
8 #include "vm/dart.h" | 8 #include "vm/dart.h" |
9 #include "vm/freelist.h" | 9 #include "vm/freelist.h" |
10 #include "vm/isolate.h" | 10 #include "vm/isolate.h" |
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535 return false; | 535 return false; |
536 } | 536 } |
537 | 537 |
538 | 538 |
539 intptr_t RawCode::VisitCodePointers(RawCode* raw_obj, | 539 intptr_t RawCode::VisitCodePointers(RawCode* raw_obj, |
540 ObjectPointerVisitor* visitor) { | 540 ObjectPointerVisitor* visitor) { |
541 visitor->VisitPointers(raw_obj->from(), raw_obj->to()); | 541 visitor->VisitPointers(raw_obj->from(), raw_obj->to()); |
542 | 542 |
543 RawCode* obj = raw_obj->ptr(); | 543 RawCode* obj = raw_obj->ptr(); |
544 intptr_t length = Code::PtrOffBits::decode(obj->state_bits_); | 544 intptr_t length = Code::PtrOffBits::decode(obj->state_bits_); |
545 #if defined(TARGET_ARCH_IA32) | |
546 // On IA32 only we embed pointers to objects directly in the generated | |
547 // instructions. The variable porition of a Code object describes where to | |
548 // find those pointers for tracing. | |
549 if (Code::AliveBit::decode(obj->state_bits_)) { | 545 if (Code::AliveBit::decode(obj->state_bits_)) { |
| 546 // Also visit all the embedded pointers in the corresponding instructions. |
550 uword entry_point = reinterpret_cast<uword>(obj->instructions_->ptr()) + | 547 uword entry_point = reinterpret_cast<uword>(obj->instructions_->ptr()) + |
551 Instructions::HeaderSize(); | 548 Instructions::HeaderSize(); |
552 for (intptr_t i = 0; i < length; i++) { | 549 for (intptr_t i = 0; i < length; i++) { |
553 int32_t offset = obj->data()[i]; | 550 int32_t offset = obj->data()[i]; |
554 visitor->VisitPointer( | 551 visitor->VisitPointer( |
555 reinterpret_cast<RawObject**>(entry_point + offset)); | 552 reinterpret_cast<RawObject**>(entry_point + offset)); |
556 } | 553 } |
557 } | 554 } |
558 return Code::InstanceSize(length); | 555 return Code::InstanceSize(length); |
559 #else | |
560 // On all other architectures, objects are referenced indirectly through | |
561 // either the ObjectPool or Thread. | |
562 ASSERT(length == 0); | |
563 return Code::InstanceSize(0); | |
564 #endif | |
565 } | 556 } |
566 | 557 |
567 | 558 |
568 intptr_t RawObjectPool::VisitObjectPoolPointers( | 559 intptr_t RawObjectPool::VisitObjectPoolPointers( |
569 RawObjectPool* raw_obj, ObjectPointerVisitor* visitor) { | 560 RawObjectPool* raw_obj, ObjectPointerVisitor* visitor) { |
570 visitor->VisitPointer( | 561 visitor->VisitPointer( |
571 reinterpret_cast<RawObject**>(&raw_obj->ptr()->info_array_)); | 562 reinterpret_cast<RawObject**>(&raw_obj->ptr()->info_array_)); |
572 const intptr_t len = raw_obj->ptr()->length_; | 563 const intptr_t len = raw_obj->ptr()->length_; |
573 RawTypedData* info_array = raw_obj->ptr()->info_array_->ptr(); | 564 RawTypedData* info_array = raw_obj->ptr()->info_array_->ptr(); |
574 Entry* first = raw_obj->first_entry(); | 565 Entry* first = raw_obj->first_entry(); |
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970 intptr_t RawUserTag::VisitUserTagPointers( | 961 intptr_t RawUserTag::VisitUserTagPointers( |
971 RawUserTag* raw_obj, ObjectPointerVisitor* visitor) { | 962 RawUserTag* raw_obj, ObjectPointerVisitor* visitor) { |
972 // Make sure that we got here with the tagged pointer as this. | 963 // Make sure that we got here with the tagged pointer as this. |
973 ASSERT(raw_obj->IsHeapObject()); | 964 ASSERT(raw_obj->IsHeapObject()); |
974 visitor->VisitPointers(raw_obj->from(), raw_obj->to()); | 965 visitor->VisitPointers(raw_obj->from(), raw_obj->to()); |
975 return UserTag::InstanceSize(); | 966 return UserTag::InstanceSize(); |
976 } | 967 } |
977 | 968 |
978 | 969 |
979 } // namespace dart | 970 } // namespace dart |
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