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Side by Side Diff: src/objects-inl.h

Issue 5745005: Provide baseline GC version. (Closed) Base URL: https://v8.googlecode.com/svn/branches/bleeding_edge
Patch Set: Created 10 years ago
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1 // Copyright 2010 the V8 project authors. All rights reserved. 1 // Copyright 2010 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
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788 #define READ_FIELD(p, offset) \ 788 #define READ_FIELD(p, offset) \
789 (*reinterpret_cast<Object**>(FIELD_ADDR(p, offset))) 789 (*reinterpret_cast<Object**>(FIELD_ADDR(p, offset)))
790 790
791 #define WRITE_FIELD(p, offset, value) \ 791 #define WRITE_FIELD(p, offset, value) \
792 (*reinterpret_cast<Object**>(FIELD_ADDR(p, offset)) = value) 792 (*reinterpret_cast<Object**>(FIELD_ADDR(p, offset)) = value)
793 793
794 794
795 #define WRITE_BARRIER(object, offset) \ 795 #define WRITE_BARRIER(object, offset) \
796 Heap::RecordWrite(object->address(), offset); 796 Heap::RecordWrite(object->address(), offset);
797 797
798 #ifndef BASELINE_GC
798 // CONDITIONAL_WRITE_BARRIER must be issued after the actual 799 // CONDITIONAL_WRITE_BARRIER must be issued after the actual
799 // write due to the assert validating the written value. 800 // write due to the assert validating the written value.
800 #define CONDITIONAL_WRITE_BARRIER(object, offset, mode) \ 801 #define CONDITIONAL_WRITE_BARRIER(object, offset, mode) \
801 if (mode == UPDATE_WRITE_BARRIER) { \ 802 if (mode == UPDATE_WRITE_BARRIER) { \
802 Heap::RecordWrite(object->address(), offset); \ 803 Heap::RecordWrite(object->address(), offset); \
803 } else { \ 804 } else { \
804 ASSERT(mode == SKIP_WRITE_BARRIER); \ 805 ASSERT(mode == SKIP_WRITE_BARRIER); \
805 ASSERT(Heap::InNewSpace(object) || \ 806 ASSERT(Heap::InNewSpace(object) || \
806 !Heap::InNewSpace(READ_FIELD(object, offset)) || \ 807 !Heap::InNewSpace(READ_FIELD(object, offset)) || \
807 Page::FromAddress(object->address())-> \ 808 Page::FromAddress(object->address())-> \
808 IsRegionDirty(object->address() + offset)); \ 809 IsRegionDirty(object->address() + offset)); \
809 } 810 }
811 #else
812 #define CONDITIONAL_WRITE_BARRIER(object, offset, mode)
813 #endif
810 814
811 #define READ_DOUBLE_FIELD(p, offset) \ 815 #define READ_DOUBLE_FIELD(p, offset) \
812 (*reinterpret_cast<double*>(FIELD_ADDR(p, offset))) 816 (*reinterpret_cast<double*>(FIELD_ADDR(p, offset)))
813 817
814 #define WRITE_DOUBLE_FIELD(p, offset, value) \ 818 #define WRITE_DOUBLE_FIELD(p, offset, value) \
815 (*reinterpret_cast<double*>(FIELD_ADDR(p, offset)) = value) 819 (*reinterpret_cast<double*>(FIELD_ADDR(p, offset)) = value)
816 820
817 #define READ_INT_FIELD(p, offset) \ 821 #define READ_INT_FIELD(p, offset) \
818 (*reinterpret_cast<int*>(FIELD_ADDR(p, offset))) 822 (*reinterpret_cast<int*>(FIELD_ADDR(p, offset)))
819 823
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1009 1013
1010 void MapWord::SetOverflow() { 1014 void MapWord::SetOverflow() {
1011 value_ |= kOverflowMask; 1015 value_ |= kOverflowMask;
1012 } 1016 }
1013 1017
1014 1018
1015 void MapWord::ClearOverflow() { 1019 void MapWord::ClearOverflow() {
1016 value_ &= ~kOverflowMask; 1020 value_ &= ~kOverflowMask;
1017 } 1021 }
1018 1022
1019 1023 #ifndef BASELINE_GC
1020 MapWord MapWord::EncodeAddress(Address map_address, int offset) { 1024 MapWord MapWord::EncodeAddress(Address map_address, int offset) {
1021 // Offset is the distance in live bytes from the first live object in the 1025 // Offset is the distance in live bytes from the first live object in the
1022 // same page. The offset between two objects in the same page should not 1026 // same page. The offset between two objects in the same page should not
1023 // exceed the object area size of a page. 1027 // exceed the object area size of a page.
1024 ASSERT(0 <= offset && offset < Page::kObjectAreaSize); 1028 ASSERT(0 <= offset && offset < Page::kObjectAreaSize);
1025 1029
1026 uintptr_t compact_offset = offset >> kObjectAlignmentBits; 1030 uintptr_t compact_offset = offset >> kObjectAlignmentBits;
1027 ASSERT(compact_offset < (1 << kForwardingOffsetBits)); 1031 ASSERT(compact_offset < (1 << kForwardingOffsetBits));
1028 1032
1029 Page* map_page = Page::FromAddress(map_address); 1033 Page* map_page = Page::FromAddress(map_address);
(...skipping 33 matching lines...) Expand 10 before | Expand all | Expand 10 after
1063 1067
1064 1068
1065 MapWord MapWord::FromEncodedAddress(Address address) { 1069 MapWord MapWord::FromEncodedAddress(Address address) {
1066 return MapWord(reinterpret_cast<uintptr_t>(address)); 1070 return MapWord(reinterpret_cast<uintptr_t>(address));
1067 } 1071 }
1068 1072
1069 1073
1070 Address MapWord::ToEncodedAddress() { 1074 Address MapWord::ToEncodedAddress() {
1071 return reinterpret_cast<Address>(value_); 1075 return reinterpret_cast<Address>(value_);
1072 } 1076 }
1073 1077 #endif
1074 1078
1075 #ifdef DEBUG 1079 #ifdef DEBUG
1076 void HeapObject::VerifyObjectField(int offset) { 1080 void HeapObject::VerifyObjectField(int offset) {
1077 VerifyPointer(READ_FIELD(this, offset)); 1081 VerifyPointer(READ_FIELD(this, offset));
1078 } 1082 }
1079 1083
1080 void HeapObject::VerifySmiField(int offset) { 1084 void HeapObject::VerifySmiField(int offset) {
1081 ASSERT(READ_FIELD(this, offset)->IsSmi()); 1085 ASSERT(READ_FIELD(this, offset)->IsSmi());
1082 } 1086 }
1083 #endif 1087 #endif
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3852 #undef WRITE_INT_FIELD 3856 #undef WRITE_INT_FIELD
3853 #undef READ_SHORT_FIELD 3857 #undef READ_SHORT_FIELD
3854 #undef WRITE_SHORT_FIELD 3858 #undef WRITE_SHORT_FIELD
3855 #undef READ_BYTE_FIELD 3859 #undef READ_BYTE_FIELD
3856 #undef WRITE_BYTE_FIELD 3860 #undef WRITE_BYTE_FIELD
3857 3861
3858 3862
3859 } } // namespace v8::internal 3863 } } // namespace v8::internal
3860 3864
3861 #endif // V8_OBJECTS_INL_H_ 3865 #endif // V8_OBJECTS_INL_H_
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