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1 // Copyright 2006-2008 the V8 project authors. All rights reserved. | 1 // Copyright 2006-2008 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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29 #define V8_HEAP_H_ | 29 #define V8_HEAP_H_ |
30 | 30 |
31 #include <math.h> | 31 #include <math.h> |
32 | 32 |
33 #include "splay-tree-inl.h" | 33 #include "splay-tree-inl.h" |
34 #include "v8-counters.h" | 34 #include "v8-counters.h" |
35 | 35 |
36 namespace v8 { | 36 namespace v8 { |
37 namespace internal { | 37 namespace internal { |
38 | 38 |
39 // Forward declarations. | |
40 class ZoneScopeInfo; | |
41 | 39 |
42 // Defines all the roots in Heap. | 40 // Defines all the roots in Heap. |
43 #define UNCONDITIONAL_STRONG_ROOT_LIST(V) \ | 41 #define UNCONDITIONAL_STRONG_ROOT_LIST(V) \ |
44 /* Put the byte array map early. We need it to be in place by the time */ \ | 42 /* Put the byte array map early. We need it to be in place by the time */ \ |
45 /* the deserializer hits the next page, since it wants to put a byte */ \ | 43 /* the deserializer hits the next page, since it wants to put a byte */ \ |
46 /* array in the unused space at the end of the page. */ \ | 44 /* array in the unused space at the end of the page. */ \ |
47 V(Map, byte_array_map, ByteArrayMap) \ | 45 V(Map, byte_array_map, ByteArrayMap) \ |
48 V(Map, one_pointer_filler_map, OnePointerFillerMap) \ | 46 V(Map, one_pointer_filler_map, OnePointerFillerMap) \ |
49 V(Map, two_pointer_filler_map, TwoPointerFillerMap) \ | 47 V(Map, two_pointer_filler_map, TwoPointerFillerMap) \ |
50 /* Cluster the most popular ones in a few cache lines here at the top. */ \ | 48 /* Cluster the most popular ones in a few cache lines here at the top. */ \ |
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619 // when shortening objects. | 617 // when shortening objects. |
620 static void CreateFillerObjectAt(Address addr, int size); | 618 static void CreateFillerObjectAt(Address addr, int size); |
621 | 619 |
622 // Makes a new native code object | 620 // Makes a new native code object |
623 // Returns Failure::RetryAfterGC(requested_bytes, space) if the allocation | 621 // Returns Failure::RetryAfterGC(requested_bytes, space) if the allocation |
624 // failed. On success, the pointer to the Code object is stored in the | 622 // failed. On success, the pointer to the Code object is stored in the |
625 // self_reference. This allows generated code to reference its own Code | 623 // self_reference. This allows generated code to reference its own Code |
626 // object by containing this pointer. | 624 // object by containing this pointer. |
627 // Please note this function does not perform a garbage collection. | 625 // Please note this function does not perform a garbage collection. |
628 static Object* CreateCode(const CodeDesc& desc, | 626 static Object* CreateCode(const CodeDesc& desc, |
629 ZoneScopeInfo* sinfo, | |
630 Code::Flags flags, | 627 Code::Flags flags, |
631 Handle<Object> self_reference); | 628 Handle<Object> self_reference); |
632 | 629 |
633 static Object* CopyCode(Code* code); | 630 static Object* CopyCode(Code* code); |
634 | 631 |
635 // Copy the code and scope info part of the code object, but insert | 632 // Copy the code and scope info part of the code object, but insert |
636 // the provided data as the relocation information. | 633 // the provided data as the relocation information. |
637 static Object* CopyCode(Code* code, Vector<byte> reloc_info); | 634 static Object* CopyCode(Code* code, Vector<byte> reloc_info); |
638 | 635 |
639 // Finds the symbol for string in the symbol table. | 636 // Finds the symbol for string in the symbol table. |
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1984 | 1981 |
1985 // To speed up scavenge collections new space string are kept | 1982 // To speed up scavenge collections new space string are kept |
1986 // separate from old space strings. | 1983 // separate from old space strings. |
1987 static List<Object*> new_space_strings_; | 1984 static List<Object*> new_space_strings_; |
1988 static List<Object*> old_space_strings_; | 1985 static List<Object*> old_space_strings_; |
1989 }; | 1986 }; |
1990 | 1987 |
1991 } } // namespace v8::internal | 1988 } } // namespace v8::internal |
1992 | 1989 |
1993 #endif // V8_HEAP_H_ | 1990 #endif // V8_HEAP_H_ |
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