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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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560 | 560 |
561 // Makes a new native code object | 561 // Makes a new native code object |
562 // Returns Failure::RetryAfterGC(requested_bytes, space) if the allocation | 562 // Returns Failure::RetryAfterGC(requested_bytes, space) if the allocation |
563 // failed. On success, the pointer to the Code object is stored in the | 563 // failed. On success, the pointer to the Code object is stored in the |
564 // self_reference. This allows generated code to reference its own Code | 564 // self_reference. This allows generated code to reference its own Code |
565 // object by containing this pointer. | 565 // object by containing this pointer. |
566 // Please note this function does not perform a garbage collection. | 566 // Please note this function does not perform a garbage collection. |
567 static Object* CreateCode(const CodeDesc& desc, | 567 static Object* CreateCode(const CodeDesc& desc, |
568 ScopeInfo<>* sinfo, | 568 ScopeInfo<>* sinfo, |
569 Code::Flags flags, | 569 Code::Flags flags, |
570 Code** self_reference = NULL); | 570 Handle<Object> self_reference); |
571 | 571 |
572 static Object* CopyCode(Code* code); | 572 static Object* CopyCode(Code* code); |
573 // Finds the symbol for string in the symbol table. | 573 // Finds the symbol for string in the symbol table. |
574 // If not found, a new symbol is added to the table and returned. | 574 // If not found, a new symbol is added to the table and returned. |
575 // Returns Failure::RetryAfterGC(requested_bytes, space) if allocation | 575 // Returns Failure::RetryAfterGC(requested_bytes, space) if allocation |
576 // failed. | 576 // failed. |
577 // Please note this function does not perform a garbage collection. | 577 // Please note this function does not perform a garbage collection. |
578 static Object* LookupSymbol(Vector<const char> str); | 578 static Object* LookupSymbol(Vector<const char> str); |
579 static Object* LookupAsciiSymbol(const char* str) { | 579 static Object* LookupAsciiSymbol(const char* str) { |
580 return LookupSymbol(CStrVector(str)); | 580 return LookupSymbol(CStrVector(str)); |
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916 // Allocate empty fixed array. | 916 // Allocate empty fixed array. |
917 static Object* AllocateEmptyFixedArray(); | 917 static Object* AllocateEmptyFixedArray(); |
918 | 918 |
919 // Performs a minor collection in new generation. | 919 // Performs a minor collection in new generation. |
920 static void Scavenge(); | 920 static void Scavenge(); |
921 | 921 |
922 // Performs a major collection in the whole heap. | 922 // Performs a major collection in the whole heap. |
923 static void MarkCompact(GCTracer* tracer); | 923 static void MarkCompact(GCTracer* tracer); |
924 | 924 |
925 // Code to be run before and after mark-compact. | 925 // Code to be run before and after mark-compact. |
926 static void MarkCompactPrologue(); | 926 static void MarkCompactPrologue(bool is_compacting); |
927 static void MarkCompactEpilogue(); | 927 static void MarkCompactEpilogue(bool is_compacting); |
928 | 928 |
929 // Helper function used by CopyObject to copy a source object to an | 929 // Helper function used by CopyObject to copy a source object to an |
930 // allocated target object and update the forwarding pointer in the source | 930 // allocated target object and update the forwarding pointer in the source |
931 // object. Returns the target object. | 931 // object. Returns the target object. |
932 static HeapObject* MigrateObject(HeapObject* source, | 932 static HeapObject* MigrateObject(HeapObject* source, |
933 HeapObject* target, | 933 HeapObject* target, |
934 int size); | 934 int size); |
935 | 935 |
936 // Helper function that governs the promotion policy from new space to | 936 // Helper function that governs the promotion policy from new space to |
937 // old. If the object's old address lies below the new space's age | 937 // old. If the object's old address lies below the new space's age |
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1280 int marked_count_; | 1280 int marked_count_; |
1281 | 1281 |
1282 // The count from the end of the previous full GC. Will be zero if there | 1282 // The count from the end of the previous full GC. Will be zero if there |
1283 // was no previous full GC. | 1283 // was no previous full GC. |
1284 int previous_marked_count_; | 1284 int previous_marked_count_; |
1285 }; | 1285 }; |
1286 | 1286 |
1287 } } // namespace v8::internal | 1287 } } // namespace v8::internal |
1288 | 1288 |
1289 #endif // V8_HEAP_H_ | 1289 #endif // V8_HEAP_H_ |
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