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1 // Copyright 2011 the V8 project authors. All rights reserved. | 1 // Copyright 2011 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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72 V(Map, meta_map, MetaMap) \ | 72 V(Map, meta_map, MetaMap) \ |
73 V(Map, hash_table_map, HashTableMap) \ | 73 V(Map, hash_table_map, HashTableMap) \ |
74 V(Smi, stack_limit, StackLimit) \ | 74 V(Smi, stack_limit, StackLimit) \ |
75 V(FixedArray, number_string_cache, NumberStringCache) \ | 75 V(FixedArray, number_string_cache, NumberStringCache) \ |
76 V(Object, instanceof_cache_function, InstanceofCacheFunction) \ | 76 V(Object, instanceof_cache_function, InstanceofCacheFunction) \ |
77 V(Object, instanceof_cache_map, InstanceofCacheMap) \ | 77 V(Object, instanceof_cache_map, InstanceofCacheMap) \ |
78 V(Object, instanceof_cache_answer, InstanceofCacheAnswer) \ | 78 V(Object, instanceof_cache_answer, InstanceofCacheAnswer) \ |
79 V(FixedArray, single_character_string_cache, SingleCharacterStringCache) \ | 79 V(FixedArray, single_character_string_cache, SingleCharacterStringCache) \ |
80 V(FixedArray, string_split_cache, StringSplitCache) \ | 80 V(FixedArray, string_split_cache, StringSplitCache) \ |
81 V(Object, termination_exception, TerminationException) \ | 81 V(Object, termination_exception, TerminationException) \ |
| 82 V(Smi, string_hash_seed, StringHashSeed) \ |
82 V(FixedArray, empty_fixed_array, EmptyFixedArray) \ | 83 V(FixedArray, empty_fixed_array, EmptyFixedArray) \ |
83 V(ByteArray, empty_byte_array, EmptyByteArray) \ | 84 V(ByteArray, empty_byte_array, EmptyByteArray) \ |
84 V(FixedDoubleArray, empty_fixed_double_array, EmptyFixedDoubleArray) \ | 85 V(FixedDoubleArray, empty_fixed_double_array, EmptyFixedDoubleArray) \ |
85 V(String, empty_string, EmptyString) \ | 86 V(String, empty_string, EmptyString) \ |
86 V(DescriptorArray, empty_descriptor_array, EmptyDescriptorArray) \ | 87 V(DescriptorArray, empty_descriptor_array, EmptyDescriptorArray) \ |
87 V(Map, string_map, StringMap) \ | 88 V(Map, string_map, StringMap) \ |
88 V(Map, ascii_string_map, AsciiStringMap) \ | 89 V(Map, ascii_string_map, AsciiStringMap) \ |
89 V(Map, symbol_map, SymbolMap) \ | 90 V(Map, symbol_map, SymbolMap) \ |
90 V(Map, cons_string_map, ConsStringMap) \ | 91 V(Map, cons_string_map, ConsStringMap) \ |
91 V(Map, cons_ascii_string_map, ConsAsciiStringMap) \ | 92 V(Map, cons_ascii_string_map, ConsAsciiStringMap) \ |
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834 // the provided data as the relocation information. | 835 // the provided data as the relocation information. |
835 MUST_USE_RESULT MaybeObject* CopyCode(Code* code, Vector<byte> reloc_info); | 836 MUST_USE_RESULT MaybeObject* CopyCode(Code* code, Vector<byte> reloc_info); |
836 | 837 |
837 // Finds the symbol for string in the symbol table. | 838 // Finds the symbol for string in the symbol table. |
838 // If not found, a new symbol is added to the table and returned. | 839 // If not found, a new symbol is added to the table and returned. |
839 // Returns Failure::RetryAfterGC(requested_bytes, space) if allocation | 840 // Returns Failure::RetryAfterGC(requested_bytes, space) if allocation |
840 // failed. | 841 // failed. |
841 // Please note this function does not perform a garbage collection. | 842 // Please note this function does not perform a garbage collection. |
842 MUST_USE_RESULT MaybeObject* LookupSymbol(Vector<const char> str); | 843 MUST_USE_RESULT MaybeObject* LookupSymbol(Vector<const char> str); |
843 MUST_USE_RESULT MaybeObject* LookupAsciiSymbol(Vector<const char> str); | 844 MUST_USE_RESULT MaybeObject* LookupAsciiSymbol(Vector<const char> str); |
844 MUST_USE_RESULT MaybeObject* LookupTwoByteSymbol( | 845 MUST_USE_RESULT MaybeObject* LookupTwoByteSymbol(Vector<const uc16> str); |
845 Vector<const uc16> str); | |
846 MUST_USE_RESULT MaybeObject* LookupAsciiSymbol(const char* str) { | 846 MUST_USE_RESULT MaybeObject* LookupAsciiSymbol(const char* str) { |
847 return LookupSymbol(CStrVector(str)); | 847 return LookupSymbol(CStrVector(str)); |
848 } | 848 } |
849 MUST_USE_RESULT MaybeObject* LookupSymbol(String* str); | 849 MUST_USE_RESULT MaybeObject* LookupSymbol(String* str); |
850 MUST_USE_RESULT MaybeObject* LookupAsciiSymbol(Handle<SeqAsciiString> string, | 850 MUST_USE_RESULT MaybeObject* LookupAsciiSymbol(Handle<SeqAsciiString> string, |
851 int from, | 851 int from, |
852 int length); | 852 int length); |
853 | 853 |
854 bool LookupSymbolIfExists(String* str, String** symbol); | 854 bool LookupSymbolIfExists(String* str, String** symbol); |
855 bool LookupTwoCharsSymbolIfExists(String* str, String** symbol); | 855 bool LookupTwoCharsSymbolIfExists(String* str, String** symbol); |
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1294 bool is_safe_to_read_maps() { return is_safe_to_read_maps_; } | 1294 bool is_safe_to_read_maps() { return is_safe_to_read_maps_; } |
1295 | 1295 |
1296 void CallGlobalGCPrologueCallback() { | 1296 void CallGlobalGCPrologueCallback() { |
1297 if (global_gc_prologue_callback_ != NULL) global_gc_prologue_callback_(); | 1297 if (global_gc_prologue_callback_ != NULL) global_gc_prologue_callback_(); |
1298 } | 1298 } |
1299 | 1299 |
1300 void CallGlobalGCEpilogueCallback() { | 1300 void CallGlobalGCEpilogueCallback() { |
1301 if (global_gc_epilogue_callback_ != NULL) global_gc_epilogue_callback_(); | 1301 if (global_gc_epilogue_callback_ != NULL) global_gc_epilogue_callback_(); |
1302 } | 1302 } |
1303 | 1303 |
| 1304 uint32_t StringHashSeed() { |
| 1305 uint32_t seed = static_cast<uint32_t>(string_hash_seed()->value()); |
| 1306 ASSERT(FLAG_randomize_string_hashes || seed == 0); |
| 1307 return seed; |
| 1308 } |
| 1309 |
1304 private: | 1310 private: |
1305 Heap(); | 1311 Heap(); |
1306 | 1312 |
1307 // This can be calculated directly from a pointer to the heap; however, it is | 1313 // This can be calculated directly from a pointer to the heap; however, it is |
1308 // more expedient to get at the isolate directly from within Heap methods. | 1314 // more expedient to get at the isolate directly from within Heap methods. |
1309 Isolate* isolate_; | 1315 Isolate* isolate_; |
1310 | 1316 |
1311 int reserved_semispace_size_; | 1317 int reserved_semispace_size_; |
1312 int max_semispace_size_; | 1318 int max_semispace_size_; |
1313 int initial_semispace_size_; | 1319 int initial_semispace_size_; |
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2349 DISALLOW_IMPLICIT_CONSTRUCTORS(PathTracer); | 2355 DISALLOW_IMPLICIT_CONSTRUCTORS(PathTracer); |
2350 }; | 2356 }; |
2351 #endif // DEBUG || LIVE_OBJECT_LIST | 2357 #endif // DEBUG || LIVE_OBJECT_LIST |
2352 | 2358 |
2353 | 2359 |
2354 } } // namespace v8::internal | 2360 } } // namespace v8::internal |
2355 | 2361 |
2356 #undef HEAP | 2362 #undef HEAP |
2357 | 2363 |
2358 #endif // V8_HEAP_H_ | 2364 #endif // V8_HEAP_H_ |
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