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1 // Copyright 2012 the V8 project authors. All rights reserved. | 1 // Copyright 2012 the V8 project authors. All rights reserved. |
2 // Use of this source code is governed by a BSD-style license that can be | 2 // Use of this source code is governed by a BSD-style license that can be |
3 // found in the LICENSE file. | 3 // found in the LICENSE file. |
4 | 4 |
5 #ifndef V8_HEAP_HEAP_H_ | 5 #ifndef V8_HEAP_HEAP_H_ |
6 #define V8_HEAP_HEAP_H_ | 6 #define V8_HEAP_HEAP_H_ |
7 | 7 |
8 #include <cmath> | 8 #include <cmath> |
9 #include <map> | 9 #include <map> |
10 | 10 |
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45 V(Map, shared_function_info_map, SharedFunctionInfoMap) \ | 45 V(Map, shared_function_info_map, SharedFunctionInfoMap) \ |
46 V(Map, meta_map, MetaMap) \ | 46 V(Map, meta_map, MetaMap) \ |
47 V(Map, heap_number_map, HeapNumberMap) \ | 47 V(Map, heap_number_map, HeapNumberMap) \ |
48 V(Map, mutable_heap_number_map, MutableHeapNumberMap) \ | 48 V(Map, mutable_heap_number_map, MutableHeapNumberMap) \ |
49 V(Map, native_context_map, NativeContextMap) \ | 49 V(Map, native_context_map, NativeContextMap) \ |
50 V(Map, fixed_array_map, FixedArrayMap) \ | 50 V(Map, fixed_array_map, FixedArrayMap) \ |
51 V(Map, code_map, CodeMap) \ | 51 V(Map, code_map, CodeMap) \ |
52 V(Map, scope_info_map, ScopeInfoMap) \ | 52 V(Map, scope_info_map, ScopeInfoMap) \ |
53 V(Map, fixed_cow_array_map, FixedCOWArrayMap) \ | 53 V(Map, fixed_cow_array_map, FixedCOWArrayMap) \ |
54 V(Map, fixed_double_array_map, FixedDoubleArrayMap) \ | 54 V(Map, fixed_double_array_map, FixedDoubleArrayMap) \ |
55 V(Map, constant_pool_array_map, ConstantPoolArrayMap) \ | |
56 V(Map, weak_cell_map, WeakCellMap) \ | 55 V(Map, weak_cell_map, WeakCellMap) \ |
57 V(Map, one_byte_string_map, OneByteStringMap) \ | 56 V(Map, one_byte_string_map, OneByteStringMap) \ |
58 V(Map, one_byte_internalized_string_map, OneByteInternalizedStringMap) \ | 57 V(Map, one_byte_internalized_string_map, OneByteInternalizedStringMap) \ |
59 V(Map, function_context_map, FunctionContextMap) \ | 58 V(Map, function_context_map, FunctionContextMap) \ |
60 V(FixedArray, empty_fixed_array, EmptyFixedArray) \ | 59 V(FixedArray, empty_fixed_array, EmptyFixedArray) \ |
61 V(ByteArray, empty_byte_array, EmptyByteArray) \ | 60 V(ByteArray, empty_byte_array, EmptyByteArray) \ |
62 V(DescriptorArray, empty_descriptor_array, EmptyDescriptorArray) \ | 61 V(DescriptorArray, empty_descriptor_array, EmptyDescriptorArray) \ |
63 V(ConstantPoolArray, empty_constant_pool_array, EmptyConstantPoolArray) \ | |
64 /* The roots above this line should be boring from a GC point of view. */ \ | 62 /* The roots above this line should be boring from a GC point of view. */ \ |
65 /* This means they are never in new space and never on a page that is */ \ | 63 /* This means they are never in new space and never on a page that is */ \ |
66 /* being compacted. */ \ | 64 /* being compacted. */ \ |
67 V(Oddball, no_interceptor_result_sentinel, NoInterceptorResultSentinel) \ | 65 V(Oddball, no_interceptor_result_sentinel, NoInterceptorResultSentinel) \ |
68 V(Oddball, arguments_marker, ArgumentsMarker) \ | 66 V(Oddball, arguments_marker, ArgumentsMarker) \ |
69 V(Oddball, exception, Exception) \ | 67 V(Oddball, exception, Exception) \ |
70 V(Oddball, termination_exception, TerminationException) \ | 68 V(Oddball, termination_exception, TerminationException) \ |
71 V(FixedArray, number_string_cache, NumberStringCache) \ | 69 V(FixedArray, number_string_cache, NumberStringCache) \ |
72 V(Object, instanceof_cache_function, InstanceofCacheFunction) \ | 70 V(Object, instanceof_cache_function, InstanceofCacheFunction) \ |
73 V(Object, instanceof_cache_map, InstanceofCacheMap) \ | 71 V(Object, instanceof_cache_map, InstanceofCacheMap) \ |
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343 V(SharedFunctionInfoMap) \ | 341 V(SharedFunctionInfoMap) \ |
344 V(MetaMap) \ | 342 V(MetaMap) \ |
345 V(HeapNumberMap) \ | 343 V(HeapNumberMap) \ |
346 V(MutableHeapNumberMap) \ | 344 V(MutableHeapNumberMap) \ |
347 V(NativeContextMap) \ | 345 V(NativeContextMap) \ |
348 V(FixedArrayMap) \ | 346 V(FixedArrayMap) \ |
349 V(CodeMap) \ | 347 V(CodeMap) \ |
350 V(ScopeInfoMap) \ | 348 V(ScopeInfoMap) \ |
351 V(FixedCOWArrayMap) \ | 349 V(FixedCOWArrayMap) \ |
352 V(FixedDoubleArrayMap) \ | 350 V(FixedDoubleArrayMap) \ |
353 V(ConstantPoolArrayMap) \ | |
354 V(WeakCellMap) \ | 351 V(WeakCellMap) \ |
355 V(NoInterceptorResultSentinel) \ | 352 V(NoInterceptorResultSentinel) \ |
356 V(HashTableMap) \ | 353 V(HashTableMap) \ |
357 V(OrderedHashTableMap) \ | 354 V(OrderedHashTableMap) \ |
358 V(EmptyFixedArray) \ | 355 V(EmptyFixedArray) \ |
359 V(EmptyByteArray) \ | 356 V(EmptyByteArray) \ |
360 V(EmptyDescriptorArray) \ | 357 V(EmptyDescriptorArray) \ |
361 V(EmptyConstantPoolArray) \ | |
362 V(ArgumentsMarker) \ | 358 V(ArgumentsMarker) \ |
363 V(SymbolMap) \ | 359 V(SymbolMap) \ |
364 V(SloppyArgumentsElementsMap) \ | 360 V(SloppyArgumentsElementsMap) \ |
365 V(FunctionContextMap) \ | 361 V(FunctionContextMap) \ |
366 V(CatchContextMap) \ | 362 V(CatchContextMap) \ |
367 V(WithContextMap) \ | 363 V(WithContextMap) \ |
368 V(BlockContextMap) \ | 364 V(BlockContextMap) \ |
369 V(ModuleContextMap) \ | 365 V(ModuleContextMap) \ |
370 V(ScriptContextMap) \ | 366 V(ScriptContextMap) \ |
371 V(UndefinedMap) \ | 367 V(UndefinedMap) \ |
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1960 // Make a copy of src, set the map, and return the copy. Returns | 1956 // Make a copy of src, set the map, and return the copy. Returns |
1961 // Failure::RetryAfterGC(requested_bytes, space) if the allocation failed. | 1957 // Failure::RetryAfterGC(requested_bytes, space) if the allocation failed. |
1962 MUST_USE_RESULT AllocationResult | 1958 MUST_USE_RESULT AllocationResult |
1963 CopyFixedArrayWithMap(FixedArray* src, Map* map); | 1959 CopyFixedArrayWithMap(FixedArray* src, Map* map); |
1964 | 1960 |
1965 // Make a copy of src and return it. Returns | 1961 // Make a copy of src and return it. Returns |
1966 // Failure::RetryAfterGC(requested_bytes, space) if the allocation failed. | 1962 // Failure::RetryAfterGC(requested_bytes, space) if the allocation failed. |
1967 MUST_USE_RESULT inline AllocationResult CopyFixedDoubleArray( | 1963 MUST_USE_RESULT inline AllocationResult CopyFixedDoubleArray( |
1968 FixedDoubleArray* src); | 1964 FixedDoubleArray* src); |
1969 | 1965 |
1970 // Make a copy of src and return it. Returns | |
1971 // Failure::RetryAfterGC(requested_bytes, space) if the allocation failed. | |
1972 MUST_USE_RESULT inline AllocationResult CopyConstantPoolArray( | |
1973 ConstantPoolArray* src); | |
1974 | |
1975 | |
1976 // Computes a single character string where the character has code. | 1966 // Computes a single character string where the character has code. |
1977 // A cache is used for one-byte (Latin1) codes. | 1967 // A cache is used for one-byte (Latin1) codes. |
1978 MUST_USE_RESULT AllocationResult | 1968 MUST_USE_RESULT AllocationResult |
1979 LookupSingleCharacterStringFromCode(uint16_t code); | 1969 LookupSingleCharacterStringFromCode(uint16_t code); |
1980 | 1970 |
1981 // Allocate a symbol in old space. | 1971 // Allocate a symbol in old space. |
1982 MUST_USE_RESULT AllocationResult AllocateSymbol(); | 1972 MUST_USE_RESULT AllocationResult AllocateSymbol(); |
1983 | 1973 |
1984 // Make a copy of src, set the map, and return the copy. | |
1985 MUST_USE_RESULT AllocationResult | |
1986 CopyConstantPoolArrayWithMap(ConstantPoolArray* src, Map* map); | |
1987 | |
1988 MUST_USE_RESULT AllocationResult AllocateConstantPoolArray( | |
1989 const ConstantPoolArray::NumberOfEntries& small); | |
1990 | |
1991 MUST_USE_RESULT AllocationResult AllocateExtendedConstantPoolArray( | |
1992 const ConstantPoolArray::NumberOfEntries& small, | |
1993 const ConstantPoolArray::NumberOfEntries& extended); | |
1994 | |
1995 // Allocates an external array of the specified length and type. | 1974 // Allocates an external array of the specified length and type. |
1996 MUST_USE_RESULT AllocationResult | 1975 MUST_USE_RESULT AllocationResult |
1997 AllocateExternalArray(int length, ExternalArrayType array_type, | 1976 AllocateExternalArray(int length, ExternalArrayType array_type, |
1998 void* external_pointer, PretenureFlag pretenure); | 1977 void* external_pointer, PretenureFlag pretenure); |
1999 | 1978 |
2000 // Allocates a fixed typed array of the specified length and type. | 1979 // Allocates a fixed typed array of the specified length and type. |
2001 MUST_USE_RESULT AllocationResult | 1980 MUST_USE_RESULT AllocationResult |
2002 AllocateFixedTypedArray(int length, ExternalArrayType array_type, | 1981 AllocateFixedTypedArray(int length, ExternalArrayType array_type, |
2003 PretenureFlag pretenure); | 1982 PretenureFlag pretenure); |
2004 | 1983 |
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2024 MUST_USE_RESULT AllocationResult AllocateEmptyFixedArray(); | 2003 MUST_USE_RESULT AllocationResult AllocateEmptyFixedArray(); |
2025 | 2004 |
2026 // Allocate empty external array of given type. | 2005 // Allocate empty external array of given type. |
2027 MUST_USE_RESULT AllocationResult | 2006 MUST_USE_RESULT AllocationResult |
2028 AllocateEmptyExternalArray(ExternalArrayType array_type); | 2007 AllocateEmptyExternalArray(ExternalArrayType array_type); |
2029 | 2008 |
2030 // Allocate empty fixed typed array of given type. | 2009 // Allocate empty fixed typed array of given type. |
2031 MUST_USE_RESULT AllocationResult | 2010 MUST_USE_RESULT AllocationResult |
2032 AllocateEmptyFixedTypedArray(ExternalArrayType array_type); | 2011 AllocateEmptyFixedTypedArray(ExternalArrayType array_type); |
2033 | 2012 |
2034 // Allocate empty constant pool array. | |
2035 MUST_USE_RESULT AllocationResult AllocateEmptyConstantPoolArray(); | |
2036 | |
2037 // Allocate a tenured simple cell. | 2013 // Allocate a tenured simple cell. |
2038 MUST_USE_RESULT AllocationResult AllocateCell(Object* value); | 2014 MUST_USE_RESULT AllocationResult AllocateCell(Object* value); |
2039 | 2015 |
2040 // Allocate a tenured JS global property cell initialized with the hole. | 2016 // Allocate a tenured JS global property cell initialized with the hole. |
2041 MUST_USE_RESULT AllocationResult AllocatePropertyCell(); | 2017 MUST_USE_RESULT AllocationResult AllocatePropertyCell(); |
2042 | 2018 |
2043 MUST_USE_RESULT AllocationResult AllocateWeakCell(HeapObject* value); | 2019 MUST_USE_RESULT AllocationResult AllocateWeakCell(HeapObject* value); |
2044 | 2020 |
2045 // Allocates a new utility object in the old generation. | 2021 // Allocates a new utility object in the old generation. |
2046 MUST_USE_RESULT AllocationResult AllocateStruct(InstanceType type); | 2022 MUST_USE_RESULT AllocationResult AllocateStruct(InstanceType type); |
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2746 DisallowHeapAllocation no_allocation; // i.e. no gc allowed. | 2722 DisallowHeapAllocation no_allocation; // i.e. no gc allowed. |
2747 | 2723 |
2748 private: | 2724 private: |
2749 DISALLOW_IMPLICIT_CONSTRUCTORS(PathTracer); | 2725 DISALLOW_IMPLICIT_CONSTRUCTORS(PathTracer); |
2750 }; | 2726 }; |
2751 #endif // DEBUG | 2727 #endif // DEBUG |
2752 } | 2728 } |
2753 } // namespace v8::internal | 2729 } // namespace v8::internal |
2754 | 2730 |
2755 #endif // V8_HEAP_HEAP_H_ | 2731 #endif // V8_HEAP_HEAP_H_ |
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