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v8/tools/v8heapconst.py
Benedikt Meurer 683cf6f43b [cleanup] Remove obsolete "one byte data hint" for strings. 
In the early days of Chrome when we used WebKit there was no support for
ASCII strings on the C++ side, so we put a hint onto these two-byte
strings that said "string only contains one byte data", such that
internally in V8 when these were involved in string operations, we could
instead create the *cheaper* one byte strings.

Nowadays Blink properly supports one-byte string representations and
this additional hint only comes with overhead, since we check it in
quite a few places (i.e. on the hot path for string concatenation), plus
we end up consuming more memory due to the additional string maps.
Removing the hint also frees one bit in the InstanceType zoo for
strings.

This alone improves performance on the `bench-dom-serialize.js` test case
by around **3%**.

Tbr: mstarzinger@chromium.org
Bug: v8:6622, v8:8834, v8:8939
Cq-Include-Trybots: luci.chromium.try:linux-blink-rel
Change-Id: I0753f2859cee7b5a37b6f0da64d8ec39fcb044ff
Doc: https://bit.ly/fast-string-concatenation-in-javascript
Reviewed-on: https://chromium-review.googlesource.com/c/1498478
Commit-Queue: Benedikt Meurer <bmeurer@chromium.org>
Reviewed-by: Yang Guo <yangguo@chromium.org>
Cr-Commit-Position: refs/heads/master@{#60006}
2019-03-04 14:04:02 +00:00

463 lines
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# Copyright 2019 the V8 project authors. All rights reserved.
# Use of this source code is governed by a BSD-style license that can
# be found in the LICENSE file.
# This file is automatically generated by mkgrokdump and should not
# be modified manually.
# List of known V8 instance types.
INSTANCE_TYPES = {
0: "INTERNALIZED_STRING_TYPE",
2: "EXTERNAL_INTERNALIZED_STRING_TYPE",
8: "ONE_BYTE_INTERNALIZED_STRING_TYPE",
10: "EXTERNAL_ONE_BYTE_INTERNALIZED_STRING_TYPE",
18: "UNCACHED_EXTERNAL_INTERNALIZED_STRING_TYPE",
26: "UNCACHED_EXTERNAL_ONE_BYTE_INTERNALIZED_STRING_TYPE",
32: "STRING_TYPE",
33: "CONS_STRING_TYPE",
34: "EXTERNAL_STRING_TYPE",
35: "SLICED_STRING_TYPE",
37: "THIN_STRING_TYPE",
40: "ONE_BYTE_STRING_TYPE",
41: "CONS_ONE_BYTE_STRING_TYPE",
42: "EXTERNAL_ONE_BYTE_STRING_TYPE",
43: "SLICED_ONE_BYTE_STRING_TYPE",
45: "THIN_ONE_BYTE_STRING_TYPE",
50: "UNCACHED_EXTERNAL_STRING_TYPE",
58: "UNCACHED_EXTERNAL_ONE_BYTE_STRING_TYPE",
64: "SYMBOL_TYPE",
65: "HEAP_NUMBER_TYPE",
66: "BIGINT_TYPE",
67: "ODDBALL_TYPE",
68: "MAP_TYPE",
69: "CODE_TYPE",
70: "MUTABLE_HEAP_NUMBER_TYPE",
71: "FOREIGN_TYPE",
72: "BYTE_ARRAY_TYPE",
73: "BYTECODE_ARRAY_TYPE",
74: "FREE_SPACE_TYPE",
75: "FIXED_INT8_ARRAY_TYPE",
76: "FIXED_UINT8_ARRAY_TYPE",
77: "FIXED_INT16_ARRAY_TYPE",
78: "FIXED_UINT16_ARRAY_TYPE",
79: "FIXED_INT32_ARRAY_TYPE",
80: "FIXED_UINT32_ARRAY_TYPE",
81: "FIXED_FLOAT32_ARRAY_TYPE",
82: "FIXED_FLOAT64_ARRAY_TYPE",
83: "FIXED_UINT8_CLAMPED_ARRAY_TYPE",
84: "FIXED_BIGINT64_ARRAY_TYPE",
85: "FIXED_BIGUINT64_ARRAY_TYPE",
86: "FIXED_DOUBLE_ARRAY_TYPE",
87: "FEEDBACK_METADATA_TYPE",
88: "FILLER_TYPE",
89: "ACCESS_CHECK_INFO_TYPE",
90: "ACCESSOR_INFO_TYPE",
91: "ACCESSOR_PAIR_TYPE",
92: "ALIASED_ARGUMENTS_ENTRY_TYPE",
93: "ALLOCATION_MEMENTO_TYPE",
94: "ASM_WASM_DATA_TYPE",
95: "ASYNC_GENERATOR_REQUEST_TYPE",
96: "CLASS_POSITIONS_TYPE",
97: "DEBUG_INFO_TYPE",
98: "FUNCTION_TEMPLATE_INFO_TYPE",
99: "FUNCTION_TEMPLATE_RARE_DATA_TYPE",
100: "INTERCEPTOR_INFO_TYPE",
101: "INTERPRETER_DATA_TYPE",
102: "MODULE_INFO_ENTRY_TYPE",
103: "MODULE_TYPE",
104: "OBJECT_TEMPLATE_INFO_TYPE",
105: "PROMISE_CAPABILITY_TYPE",
106: "PROMISE_REACTION_TYPE",
107: "PROTOTYPE_INFO_TYPE",
108: "SCRIPT_TYPE",
109: "STACK_FRAME_INFO_TYPE",
110: "STACK_TRACE_FRAME_TYPE",
111: "TUPLE2_TYPE",
112: "TUPLE3_TYPE",
113: "ARRAY_BOILERPLATE_DESCRIPTION_TYPE",
114: "WASM_DEBUG_INFO_TYPE",
115: "WASM_EXCEPTION_TAG_TYPE",
116: "WASM_EXPORTED_FUNCTION_DATA_TYPE",
117: "CALLABLE_TASK_TYPE",
118: "CALLBACK_TASK_TYPE",
119: "PROMISE_FULFILL_REACTION_JOB_TASK_TYPE",
120: "PROMISE_REJECT_REACTION_JOB_TASK_TYPE",
121: "PROMISE_RESOLVE_THENABLE_JOB_TASK_TYPE",
122: "FINALIZATION_GROUP_CLEANUP_JOB_TASK_TYPE",
123: "ALLOCATION_SITE_TYPE",
124: "EMBEDDER_DATA_ARRAY_TYPE",
125: "FIXED_ARRAY_TYPE",
126: "OBJECT_BOILERPLATE_DESCRIPTION_TYPE",
127: "HASH_TABLE_TYPE",
128: "ORDERED_HASH_MAP_TYPE",
129: "ORDERED_HASH_SET_TYPE",
130: "ORDERED_NAME_DICTIONARY_TYPE",
131: "NAME_DICTIONARY_TYPE",
132: "GLOBAL_DICTIONARY_TYPE",
133: "NUMBER_DICTIONARY_TYPE",
134: "SIMPLE_NUMBER_DICTIONARY_TYPE",
135: "STRING_TABLE_TYPE",
136: "EPHEMERON_HASH_TABLE_TYPE",
137: "SCOPE_INFO_TYPE",
138: "SCRIPT_CONTEXT_TABLE_TYPE",
139: "AWAIT_CONTEXT_TYPE",
140: "BLOCK_CONTEXT_TYPE",
141: "CATCH_CONTEXT_TYPE",
142: "DEBUG_EVALUATE_CONTEXT_TYPE",
143: "EVAL_CONTEXT_TYPE",
144: "FUNCTION_CONTEXT_TYPE",
145: "MODULE_CONTEXT_TYPE",
146: "NATIVE_CONTEXT_TYPE",
147: "SCRIPT_CONTEXT_TYPE",
148: "WITH_CONTEXT_TYPE",
149: "WEAK_FIXED_ARRAY_TYPE",
150: "TRANSITION_ARRAY_TYPE",
151: "CALL_HANDLER_INFO_TYPE",
152: "CELL_TYPE",
153: "CODE_DATA_CONTAINER_TYPE",
154: "DESCRIPTOR_ARRAY_TYPE",
155: "FEEDBACK_CELL_TYPE",
156: "FEEDBACK_VECTOR_TYPE",
157: "LOAD_HANDLER_TYPE",
158: "PREPARSE_DATA_TYPE",
159: "PROPERTY_ARRAY_TYPE",
160: "PROPERTY_CELL_TYPE",
161: "SHARED_FUNCTION_INFO_TYPE",
162: "SMALL_ORDERED_HASH_MAP_TYPE",
163: "SMALL_ORDERED_HASH_SET_TYPE",
164: "SMALL_ORDERED_NAME_DICTIONARY_TYPE",
165: "STORE_HANDLER_TYPE",
166: "UNCOMPILED_DATA_WITHOUT_PREPARSE_DATA_TYPE",
167: "UNCOMPILED_DATA_WITH_PREPARSE_DATA_TYPE",
168: "WEAK_ARRAY_LIST_TYPE",
169: "WEAK_CELL_TYPE",
1024: "JS_PROXY_TYPE",
1025: "JS_GLOBAL_OBJECT_TYPE",
1026: "JS_GLOBAL_PROXY_TYPE",
1027: "JS_MODULE_NAMESPACE_TYPE",
1040: "JS_SPECIAL_API_OBJECT_TYPE",
1041: "JS_VALUE_TYPE",
1056: "JS_API_OBJECT_TYPE",
1057: "JS_OBJECT_TYPE",
1058: "JS_ARGUMENTS_TYPE",
1059: "JS_ARRAY_BUFFER_TYPE",
1060: "JS_ARRAY_ITERATOR_TYPE",
1061: "JS_ARRAY_TYPE",
1062: "JS_ASYNC_FROM_SYNC_ITERATOR_TYPE",
1063: "JS_ASYNC_FUNCTION_OBJECT_TYPE",
1064: "JS_ASYNC_GENERATOR_OBJECT_TYPE",
1065: "JS_CONTEXT_EXTENSION_OBJECT_TYPE",
1066: "JS_DATE_TYPE",
1067: "JS_ERROR_TYPE",
1068: "JS_GENERATOR_OBJECT_TYPE",
1069: "JS_MAP_TYPE",
1070: "JS_MAP_KEY_ITERATOR_TYPE",
1071: "JS_MAP_KEY_VALUE_ITERATOR_TYPE",
1072: "JS_MAP_VALUE_ITERATOR_TYPE",
1073: "JS_MESSAGE_OBJECT_TYPE",
1074: "JS_PROMISE_TYPE",
1075: "JS_REGEXP_TYPE",
1076: "JS_REGEXP_STRING_ITERATOR_TYPE",
1077: "JS_SET_TYPE",
1078: "JS_SET_KEY_VALUE_ITERATOR_TYPE",
1079: "JS_SET_VALUE_ITERATOR_TYPE",
1080: "JS_STRING_ITERATOR_TYPE",
1081: "JS_WEAK_REF_TYPE",
1082: "JS_FINALIZATION_GROUP_CLEANUP_ITERATOR_TYPE",
1083: "JS_FINALIZATION_GROUP_TYPE",
1084: "JS_WEAK_MAP_TYPE",
1085: "JS_WEAK_SET_TYPE",
1086: "JS_TYPED_ARRAY_TYPE",
1087: "JS_DATA_VIEW_TYPE",
1088: "JS_INTL_V8_BREAK_ITERATOR_TYPE",
1089: "JS_INTL_COLLATOR_TYPE",
1090: "JS_INTL_DATE_TIME_FORMAT_TYPE",
1091: "JS_INTL_LIST_FORMAT_TYPE",
1092: "JS_INTL_LOCALE_TYPE",
1093: "JS_INTL_NUMBER_FORMAT_TYPE",
1094: "JS_INTL_PLURAL_RULES_TYPE",
1095: "JS_INTL_RELATIVE_TIME_FORMAT_TYPE",
1096: "JS_INTL_SEGMENT_ITERATOR_TYPE",
1097: "JS_INTL_SEGMENTER_TYPE",
1098: "WASM_EXCEPTION_TYPE",
1099: "WASM_GLOBAL_TYPE",
1100: "WASM_INSTANCE_TYPE",
1101: "WASM_MEMORY_TYPE",
1102: "WASM_MODULE_TYPE",
1103: "WASM_TABLE_TYPE",
1104: "JS_BOUND_FUNCTION_TYPE",
1105: "JS_FUNCTION_TYPE",
}
# List of known V8 maps.
KNOWN_MAPS = {
("RO_SPACE", 0x00139): (74, "FreeSpaceMap"),
("RO_SPACE", 0x00189): (68, "MetaMap"),
("RO_SPACE", 0x00209): (67, "NullMap"),
("RO_SPACE", 0x00271): (154, "DescriptorArrayMap"),
("RO_SPACE", 0x002d1): (149, "WeakFixedArrayMap"),
("RO_SPACE", 0x00321): (88, "OnePointerFillerMap"),
("RO_SPACE", 0x00371): (88, "TwoPointerFillerMap"),
("RO_SPACE", 0x003f1): (67, "UninitializedMap"),
("RO_SPACE", 0x00461): (8, "OneByteInternalizedStringMap"),
("RO_SPACE", 0x00501): (67, "UndefinedMap"),
("RO_SPACE", 0x00561): (65, "HeapNumberMap"),
("RO_SPACE", 0x005e1): (67, "TheHoleMap"),
("RO_SPACE", 0x00689): (67, "BooleanMap"),
("RO_SPACE", 0x00761): (72, "ByteArrayMap"),
("RO_SPACE", 0x007b1): (125, "FixedArrayMap"),
("RO_SPACE", 0x00801): (125, "FixedCOWArrayMap"),
("RO_SPACE", 0x00851): (127, "HashTableMap"),
("RO_SPACE", 0x008a1): (64, "SymbolMap"),
("RO_SPACE", 0x008f1): (40, "OneByteStringMap"),
("RO_SPACE", 0x00941): (137, "ScopeInfoMap"),
("RO_SPACE", 0x00991): (161, "SharedFunctionInfoMap"),
("RO_SPACE", 0x009e1): (69, "CodeMap"),
("RO_SPACE", 0x00a31): (144, "FunctionContextMap"),
("RO_SPACE", 0x00a81): (152, "CellMap"),
("RO_SPACE", 0x00ad1): (160, "GlobalPropertyCellMap"),
("RO_SPACE", 0x00b21): (71, "ForeignMap"),
("RO_SPACE", 0x00b71): (150, "TransitionArrayMap"),
("RO_SPACE", 0x00bc1): (156, "FeedbackVectorMap"),
("RO_SPACE", 0x00c61): (67, "ArgumentsMarkerMap"),
("RO_SPACE", 0x00d01): (67, "ExceptionMap"),
("RO_SPACE", 0x00da1): (67, "TerminationExceptionMap"),
("RO_SPACE", 0x00e49): (67, "OptimizedOutMap"),
("RO_SPACE", 0x00ee9): (67, "StaleRegisterMap"),
("RO_SPACE", 0x00f59): (146, "NativeContextMap"),
("RO_SPACE", 0x00fa9): (145, "ModuleContextMap"),
("RO_SPACE", 0x00ff9): (143, "EvalContextMap"),
("RO_SPACE", 0x01049): (147, "ScriptContextMap"),
("RO_SPACE", 0x01099): (139, "AwaitContextMap"),
("RO_SPACE", 0x010e9): (140, "BlockContextMap"),
("RO_SPACE", 0x01139): (141, "CatchContextMap"),
("RO_SPACE", 0x01189): (148, "WithContextMap"),
("RO_SPACE", 0x011d9): (142, "DebugEvaluateContextMap"),
("RO_SPACE", 0x01229): (138, "ScriptContextTableMap"),
("RO_SPACE", 0x01279): (87, "FeedbackMetadataArrayMap"),
("RO_SPACE", 0x012c9): (125, "ArrayListMap"),
("RO_SPACE", 0x01319): (66, "BigIntMap"),
("RO_SPACE", 0x01369): (126, "ObjectBoilerplateDescriptionMap"),
("RO_SPACE", 0x013b9): (73, "BytecodeArrayMap"),
("RO_SPACE", 0x01409): (153, "CodeDataContainerMap"),
("RO_SPACE", 0x01459): (86, "FixedDoubleArrayMap"),
("RO_SPACE", 0x014a9): (132, "GlobalDictionaryMap"),
("RO_SPACE", 0x014f9): (155, "ManyClosuresCellMap"),
("RO_SPACE", 0x01549): (125, "ModuleInfoMap"),
("RO_SPACE", 0x01599): (70, "MutableHeapNumberMap"),
("RO_SPACE", 0x015e9): (131, "NameDictionaryMap"),
("RO_SPACE", 0x01639): (155, "NoClosuresCellMap"),
("RO_SPACE", 0x01689): (155, "NoFeedbackCellMap"),
("RO_SPACE", 0x016d9): (133, "NumberDictionaryMap"),
("RO_SPACE", 0x01729): (155, "OneClosureCellMap"),
("RO_SPACE", 0x01779): (128, "OrderedHashMapMap"),
("RO_SPACE", 0x017c9): (129, "OrderedHashSetMap"),
("RO_SPACE", 0x01819): (130, "OrderedNameDictionaryMap"),
("RO_SPACE", 0x01869): (158, "PreparseDataMap"),
("RO_SPACE", 0x018b9): (159, "PropertyArrayMap"),
("RO_SPACE", 0x01909): (151, "SideEffectCallHandlerInfoMap"),
("RO_SPACE", 0x01959): (151, "SideEffectFreeCallHandlerInfoMap"),
("RO_SPACE", 0x019a9): (151, "NextCallSideEffectFreeCallHandlerInfoMap"),
("RO_SPACE", 0x019f9): (134, "SimpleNumberDictionaryMap"),
("RO_SPACE", 0x01a49): (125, "SloppyArgumentsElementsMap"),
("RO_SPACE", 0x01a99): (162, "SmallOrderedHashMapMap"),
("RO_SPACE", 0x01ae9): (163, "SmallOrderedHashSetMap"),
("RO_SPACE", 0x01b39): (164, "SmallOrderedNameDictionaryMap"),
("RO_SPACE", 0x01b89): (135, "StringTableMap"),
("RO_SPACE", 0x01bd9): (166, "UncompiledDataWithoutPreparseDataMap"),
("RO_SPACE", 0x01c29): (167, "UncompiledDataWithPreparseDataMap"),
("RO_SPACE", 0x01c79): (168, "WeakArrayListMap"),
("RO_SPACE", 0x01cc9): (136, "EphemeronHashTableMap"),
("RO_SPACE", 0x01d19): (124, "EmbedderDataArrayMap"),
("RO_SPACE", 0x01d69): (169, "WeakCellMap"),
("RO_SPACE", 0x01db9): (58, "NativeSourceStringMap"),
("RO_SPACE", 0x01e09): (32, "StringMap"),
("RO_SPACE", 0x01e59): (41, "ConsOneByteStringMap"),
("RO_SPACE", 0x01ea9): (33, "ConsStringMap"),
("RO_SPACE", 0x01ef9): (45, "ThinOneByteStringMap"),
("RO_SPACE", 0x01f49): (37, "ThinStringMap"),
("RO_SPACE", 0x01f99): (35, "SlicedStringMap"),
("RO_SPACE", 0x01fe9): (43, "SlicedOneByteStringMap"),
("RO_SPACE", 0x02039): (34, "ExternalStringMap"),
("RO_SPACE", 0x02089): (42, "ExternalOneByteStringMap"),
("RO_SPACE", 0x020d9): (50, "UncachedExternalStringMap"),
("RO_SPACE", 0x02129): (0, "InternalizedStringMap"),
("RO_SPACE", 0x02179): (2, "ExternalInternalizedStringMap"),
("RO_SPACE", 0x021c9): (10, "ExternalOneByteInternalizedStringMap"),
("RO_SPACE", 0x02219): (18, "UncachedExternalInternalizedStringMap"),
("RO_SPACE", 0x02269): (26, "UncachedExternalOneByteInternalizedStringMap"),
("RO_SPACE", 0x022b9): (58, "UncachedExternalOneByteStringMap"),
("RO_SPACE", 0x02309): (76, "FixedUint8ArrayMap"),
("RO_SPACE", 0x02359): (75, "FixedInt8ArrayMap"),
("RO_SPACE", 0x023a9): (78, "FixedUint16ArrayMap"),
("RO_SPACE", 0x023f9): (77, "FixedInt16ArrayMap"),
("RO_SPACE", 0x02449): (80, "FixedUint32ArrayMap"),
("RO_SPACE", 0x02499): (79, "FixedInt32ArrayMap"),
("RO_SPACE", 0x024e9): (81, "FixedFloat32ArrayMap"),
("RO_SPACE", 0x02539): (82, "FixedFloat64ArrayMap"),
("RO_SPACE", 0x02589): (83, "FixedUint8ClampedArrayMap"),
("RO_SPACE", 0x025d9): (85, "FixedBigUint64ArrayMap"),
("RO_SPACE", 0x02629): (84, "FixedBigInt64ArrayMap"),
("RO_SPACE", 0x02679): (67, "SelfReferenceMarkerMap"),
("RO_SPACE", 0x026e1): (111, "Tuple2Map"),
("RO_SPACE", 0x02781): (113, "ArrayBoilerplateDescriptionMap"),
("RO_SPACE", 0x02ac1): (100, "InterceptorInfoMap"),
("RO_SPACE", 0x04fe9): (89, "AccessCheckInfoMap"),
("RO_SPACE", 0x05039): (90, "AccessorInfoMap"),
("RO_SPACE", 0x05089): (91, "AccessorPairMap"),
("RO_SPACE", 0x050d9): (92, "AliasedArgumentsEntryMap"),
("RO_SPACE", 0x05129): (93, "AllocationMementoMap"),
("RO_SPACE", 0x05179): (94, "AsmWasmDataMap"),
("RO_SPACE", 0x051c9): (95, "AsyncGeneratorRequestMap"),
("RO_SPACE", 0x05219): (96, "ClassPositionsMap"),
("RO_SPACE", 0x05269): (97, "DebugInfoMap"),
("RO_SPACE", 0x052b9): (98, "FunctionTemplateInfoMap"),
("RO_SPACE", 0x05309): (99, "FunctionTemplateRareDataMap"),
("RO_SPACE", 0x05359): (101, "InterpreterDataMap"),
("RO_SPACE", 0x053a9): (102, "ModuleInfoEntryMap"),
("RO_SPACE", 0x053f9): (103, "ModuleMap"),
("RO_SPACE", 0x05449): (104, "ObjectTemplateInfoMap"),
("RO_SPACE", 0x05499): (105, "PromiseCapabilityMap"),
("RO_SPACE", 0x054e9): (106, "PromiseReactionMap"),
("RO_SPACE", 0x05539): (107, "PrototypeInfoMap"),
("RO_SPACE", 0x05589): (108, "ScriptMap"),
("RO_SPACE", 0x055d9): (109, "StackFrameInfoMap"),
("RO_SPACE", 0x05629): (110, "StackTraceFrameMap"),
("RO_SPACE", 0x05679): (112, "Tuple3Map"),
("RO_SPACE", 0x056c9): (114, "WasmDebugInfoMap"),
("RO_SPACE", 0x05719): (115, "WasmExceptionTagMap"),
("RO_SPACE", 0x05769): (116, "WasmExportedFunctionDataMap"),
("RO_SPACE", 0x057b9): (117, "CallableTaskMap"),
("RO_SPACE", 0x05809): (118, "CallbackTaskMap"),
("RO_SPACE", 0x05859): (119, "PromiseFulfillReactionJobTaskMap"),
("RO_SPACE", 0x058a9): (120, "PromiseRejectReactionJobTaskMap"),
("RO_SPACE", 0x058f9): (121, "PromiseResolveThenableJobTaskMap"),
("RO_SPACE", 0x05949): (122, "FinalizationGroupCleanupJobTaskMap"),
("RO_SPACE", 0x05999): (123, "AllocationSiteWithWeakNextMap"),
("RO_SPACE", 0x059e9): (123, "AllocationSiteWithoutWeakNextMap"),
("RO_SPACE", 0x05a39): (157, "LoadHandler1Map"),
("RO_SPACE", 0x05a89): (157, "LoadHandler2Map"),
("RO_SPACE", 0x05ad9): (157, "LoadHandler3Map"),
("RO_SPACE", 0x05b29): (165, "StoreHandler0Map"),
("RO_SPACE", 0x05b79): (165, "StoreHandler1Map"),
("RO_SPACE", 0x05bc9): (165, "StoreHandler2Map"),
("RO_SPACE", 0x05c19): (165, "StoreHandler3Map"),
("MAP_SPACE", 0x00139): (1057, "ExternalMap"),
("MAP_SPACE", 0x00189): (1073, "JSMessageObjectMap"),
}
# List of known V8 objects.
KNOWN_OBJECTS = {
("RO_SPACE", 0x001d9): "NullValue",
("RO_SPACE", 0x00259): "EmptyDescriptorArray",
("RO_SPACE", 0x002c1): "EmptyWeakFixedArray",
("RO_SPACE", 0x003c1): "UninitializedValue",
("RO_SPACE", 0x004d1): "UndefinedValue",
("RO_SPACE", 0x00551): "NanValue",
("RO_SPACE", 0x005b1): "TheHoleValue",
("RO_SPACE", 0x00649): "HoleNanValue",
("RO_SPACE", 0x00659): "TrueValue",
("RO_SPACE", 0x00709): "FalseValue",
("RO_SPACE", 0x00751): "empty_string",
("RO_SPACE", 0x00c11): "EmptyScopeInfo",
("RO_SPACE", 0x00c21): "EmptyFixedArray",
("RO_SPACE", 0x00c31): "ArgumentsMarker",
("RO_SPACE", 0x00cd1): "Exception",
("RO_SPACE", 0x00d71): "TerminationException",
("RO_SPACE", 0x00e19): "OptimizedOut",
("RO_SPACE", 0x00eb9): "StaleRegister",
("RO_SPACE", 0x026c9): "EmptyEnumCache",
("RO_SPACE", 0x02731): "EmptyPropertyArray",
("RO_SPACE", 0x02741): "EmptyByteArray",
("RO_SPACE", 0x02751): "EmptyObjectBoilerplateDescription",
("RO_SPACE", 0x02769): "EmptyArrayBoilerplateDescription",
("RO_SPACE", 0x027d1): "EmptyFixedUint8Array",
("RO_SPACE", 0x027f1): "EmptyFixedInt8Array",
("RO_SPACE", 0x02811): "EmptyFixedUint16Array",
("RO_SPACE", 0x02831): "EmptyFixedInt16Array",
("RO_SPACE", 0x02851): "EmptyFixedUint32Array",
("RO_SPACE", 0x02871): "EmptyFixedInt32Array",
("RO_SPACE", 0x02891): "EmptyFixedFloat32Array",
("RO_SPACE", 0x028b1): "EmptyFixedFloat64Array",
("RO_SPACE", 0x028d1): "EmptyFixedUint8ClampedArray",
("RO_SPACE", 0x028f1): "EmptyFixedBigUint64Array",
("RO_SPACE", 0x02911): "EmptyFixedBigInt64Array",
("RO_SPACE", 0x02931): "EmptySloppyArgumentsElements",
("RO_SPACE", 0x02951): "EmptySlowElementDictionary",
("RO_SPACE", 0x02999): "EmptyOrderedHashMap",
("RO_SPACE", 0x029c1): "EmptyOrderedHashSet",
("RO_SPACE", 0x029e9): "EmptyFeedbackMetadata",
("RO_SPACE", 0x029f9): "EmptyPropertyCell",
("RO_SPACE", 0x02a21): "EmptyPropertyDictionary",
("RO_SPACE", 0x02a71): "NoOpInterceptorInfo",
("RO_SPACE", 0x02b11): "EmptyWeakArrayList",
("RO_SPACE", 0x02b29): "InfinityValue",
("RO_SPACE", 0x02b39): "MinusZeroValue",
("RO_SPACE", 0x02b49): "MinusInfinityValue",
("RO_SPACE", 0x02b59): "SelfReferenceMarker",
("RO_SPACE", 0x02bb1): "OffHeapTrampolineRelocationInfo",
("RO_SPACE", 0x02bc9): "HashSeed",
("OLD_SPACE", 0x00139): "ArgumentsIteratorAccessor",
("OLD_SPACE", 0x001a9): "ArrayLengthAccessor",
("OLD_SPACE", 0x00219): "BoundFunctionLengthAccessor",
("OLD_SPACE", 0x00289): "BoundFunctionNameAccessor",
("OLD_SPACE", 0x002f9): "ErrorStackAccessor",
("OLD_SPACE", 0x00369): "FunctionArgumentsAccessor",
("OLD_SPACE", 0x003d9): "FunctionCallerAccessor",
("OLD_SPACE", 0x00449): "FunctionNameAccessor",
("OLD_SPACE", 0x004b9): "FunctionLengthAccessor",
("OLD_SPACE", 0x00529): "FunctionPrototypeAccessor",
("OLD_SPACE", 0x00599): "StringLengthAccessor",
("OLD_SPACE", 0x00609): "InvalidPrototypeValidityCell",
("OLD_SPACE", 0x00619): "EmptyScript",
("OLD_SPACE", 0x00699): "ManyClosuresCell",
("OLD_SPACE", 0x006a9): "NoFeedbackCell",
("OLD_SPACE", 0x006b9): "ArrayConstructorProtector",
("OLD_SPACE", 0x006c9): "NoElementsProtector",
("OLD_SPACE", 0x006f1): "IsConcatSpreadableProtector",
("OLD_SPACE", 0x00701): "ArraySpeciesProtector",
("OLD_SPACE", 0x00729): "TypedArraySpeciesProtector",
("OLD_SPACE", 0x00751): "RegExpSpeciesProtector",
("OLD_SPACE", 0x00779): "PromiseSpeciesProtector",
("OLD_SPACE", 0x007a1): "StringLengthProtector",
("OLD_SPACE", 0x007b1): "ArrayIteratorProtector",
("OLD_SPACE", 0x007d9): "ArrayBufferDetachingProtector",
("OLD_SPACE", 0x00801): "PromiseHookProtector",
("OLD_SPACE", 0x00829): "PromiseResolveProtector",
("OLD_SPACE", 0x00839): "MapIteratorProtector",
("OLD_SPACE", 0x00861): "PromiseThenProtector",
("OLD_SPACE", 0x00889): "SetIteratorProtector",
("OLD_SPACE", 0x008b1): "StringIteratorProtector",
("OLD_SPACE", 0x008d9): "SingleCharacterStringCache",
("OLD_SPACE", 0x010e9): "StringSplitCache",
("OLD_SPACE", 0x018f9): "RegExpMultipleCache",
("OLD_SPACE", 0x02109): "BuiltinsConstantsTable",
}
# List of known V8 Frame Markers.
FRAME_MARKERS = (
"ENTRY",
"CONSTRUCT_ENTRY",
"EXIT",
"OPTIMIZED",
"WASM_COMPILED",
"WASM_TO_JS",
"JS_TO_WASM",
"WASM_INTERPRETER_ENTRY",
"C_WASM_ENTRY",
"WASM_COMPILE_LAZY",
"INTERPRETED",
"STUB",
"BUILTIN_CONTINUATION",
"JAVA_SCRIPT_BUILTIN_CONTINUATION",
"JAVA_SCRIPT_BUILTIN_CONTINUATION_WITH_CATCH",
"INTERNAL",
"CONSTRUCT",
"ARGUMENTS_ADAPTOR",
"BUILTIN",
"BUILTIN_EXIT",
"NATIVE",
)
# This set of constants is generated from a shipping build.
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