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v8/tools/v8heapconst.py
mlippautz 55422bdd50 [heap] Use HashMap as scratchpad backing store 
We use a scratchpad to remember visited allocation sites for post processing
(making tenure decisions). The previous implementation used a rooted FixedArray
with constant length (256) to remember all sites. Updating the scratchpad is a
bottleneck in any parallel/concurrent implementation of newspace evacuation.

The new implementation uses a HashMap with allocation sites as keys and
temporary counts as values. During evacuation we collect a local hashmap of
visited allocation sites. Upon merging the local hashmap back into a global one
we update potential forward pointers of compacted allocation sites.  The
scavenger can directly enter its entries into the global hashmap. Note that the
actual memento found count is still kept on the AllocationSite as it needs to
survive scavenges and full GCs.

BUG=chromium:524425
LOG=N
R=hpayer@chromium.org

Review URL: https://codereview.chromium.org/1535723002

Cr-Commit-Position: refs/heads/master@{#33233}
2016-01-12 11:46:37 +00:00

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# Copyright 2013 the V8 project authors. All rights reserved.
# Redistribution and use in source and binary forms, with or without
# modification, are permitted provided that the following conditions are
# met:
#
# * Redistributions of source code must retain the above copyright
# notice, this list of conditions and the following disclaimer.
# * Redistributions in binary form must reproduce the above
# copyright notice, this list of conditions and the following
# disclaimer in the documentation and/or other materials provided
# with the distribution.
# * Neither the name of Google Inc. nor the names of its
# contributors may be used to endorse or promote products derived
# from this software without specific prior written permission.
#
# THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
# "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
# LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
# A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
# OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
# SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
# LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
# DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
# THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
# (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
# OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
# This file is automatically generated from the V8 source and should not
# be modified manually, run 'make grokdump' instead to update this file.
# List of known V8 instance types.
INSTANCE_TYPES = {
64: "STRING_TYPE",
68: "ONE_BYTE_STRING_TYPE",
65: "CONS_STRING_TYPE",
69: "CONS_ONE_BYTE_STRING_TYPE",
67: "SLICED_STRING_TYPE",
71: "SLICED_ONE_BYTE_STRING_TYPE",
66: "EXTERNAL_STRING_TYPE",
70: "EXTERNAL_ONE_BYTE_STRING_TYPE",
74: "EXTERNAL_STRING_WITH_ONE_BYTE_DATA_TYPE",
82: "SHORT_EXTERNAL_STRING_TYPE",
86: "SHORT_EXTERNAL_ONE_BYTE_STRING_TYPE",
90: "SHORT_EXTERNAL_STRING_WITH_ONE_BYTE_DATA_TYPE",
0: "INTERNALIZED_STRING_TYPE",
4: "ONE_BYTE_INTERNALIZED_STRING_TYPE",
2: "EXTERNAL_INTERNALIZED_STRING_TYPE",
6: "EXTERNAL_ONE_BYTE_INTERNALIZED_STRING_TYPE",
10: "EXTERNAL_INTERNALIZED_STRING_WITH_ONE_BYTE_DATA_TYPE",
18: "SHORT_EXTERNAL_INTERNALIZED_STRING_TYPE",
22: "SHORT_EXTERNAL_ONE_BYTE_INTERNALIZED_STRING_TYPE",
26: "SHORT_EXTERNAL_INTERNALIZED_STRING_WITH_ONE_BYTE_DATA_TYPE",
128: "SYMBOL_TYPE",
130: "SIMD128_VALUE_TYPE",
132: "MAP_TYPE",
133: "CODE_TYPE",
131: "ODDBALL_TYPE",
173: "CELL_TYPE",
176: "PROPERTY_CELL_TYPE",
129: "HEAP_NUMBER_TYPE",
134: "MUTABLE_HEAP_NUMBER_TYPE",
135: "FOREIGN_TYPE",
136: "BYTE_ARRAY_TYPE",
137: "BYTECODE_ARRAY_TYPE",
138: "FREE_SPACE_TYPE",
139: "FIXED_INT8_ARRAY_TYPE",
140: "FIXED_UINT8_ARRAY_TYPE",
141: "FIXED_INT16_ARRAY_TYPE",
142: "FIXED_UINT16_ARRAY_TYPE",
143: "FIXED_INT32_ARRAY_TYPE",
144: "FIXED_UINT32_ARRAY_TYPE",
145: "FIXED_FLOAT32_ARRAY_TYPE",
146: "FIXED_FLOAT64_ARRAY_TYPE",
147: "FIXED_UINT8_CLAMPED_ARRAY_TYPE",
149: "FILLER_TYPE",
150: "DECLARED_ACCESSOR_DESCRIPTOR_TYPE",
151: "DECLARED_ACCESSOR_INFO_TYPE",
152: "EXECUTABLE_ACCESSOR_INFO_TYPE",
153: "ACCESSOR_PAIR_TYPE",
154: "ACCESS_CHECK_INFO_TYPE",
155: "INTERCEPTOR_INFO_TYPE",
156: "CALL_HANDLER_INFO_TYPE",
157: "FUNCTION_TEMPLATE_INFO_TYPE",
158: "OBJECT_TEMPLATE_INFO_TYPE",
159: "SIGNATURE_INFO_TYPE",
160: "TYPE_SWITCH_INFO_TYPE",
162: "ALLOCATION_MEMENTO_TYPE",
161: "ALLOCATION_SITE_TYPE",
163: "SCRIPT_TYPE",
164: "CODE_CACHE_TYPE",
165: "POLYMORPHIC_CODE_CACHE_TYPE",
166: "TYPE_FEEDBACK_INFO_TYPE",
167: "ALIASED_ARGUMENTS_ENTRY_TYPE",
168: "BOX_TYPE",
177: "PROTOTYPE_INFO_TYPE",
178: "SLOPPY_BLOCK_WITH_EVAL_CONTEXT_EXTENSION_TYPE",
171: "FIXED_ARRAY_TYPE",
148: "FIXED_DOUBLE_ARRAY_TYPE",
172: "SHARED_FUNCTION_INFO_TYPE",
174: "WEAK_CELL_TYPE",
175: "TRANSITION_ARRAY_TYPE",
181: "JS_MESSAGE_OBJECT_TYPE",
180: "JS_VALUE_TYPE",
182: "JS_DATE_TYPE",
183: "JS_OBJECT_TYPE",
184: "JS_CONTEXT_EXTENSION_OBJECT_TYPE",
185: "JS_GENERATOR_OBJECT_TYPE",
186: "JS_MODULE_TYPE",
187: "JS_GLOBAL_OBJECT_TYPE",
188: "JS_GLOBAL_PROXY_TYPE",
189: "JS_ARRAY_TYPE",
190: "JS_ARRAY_BUFFER_TYPE",
191: "JS_TYPED_ARRAY_TYPE",
192: "JS_DATA_VIEW_TYPE",
179: "JS_PROXY_TYPE",
193: "JS_SET_TYPE",
194: "JS_MAP_TYPE",
195: "JS_SET_ITERATOR_TYPE",
196: "JS_MAP_ITERATOR_TYPE",
197: "JS_ITERATOR_RESULT_TYPE",
198: "JS_WEAK_MAP_TYPE",
199: "JS_WEAK_SET_TYPE",
200: "JS_PROMISE_TYPE",
201: "JS_REGEXP_TYPE",
202: "JS_BOUND_FUNCTION_TYPE",
203: "JS_FUNCTION_TYPE",
169: "DEBUG_INFO_TYPE",
170: "BREAK_POINT_INFO_TYPE",
}
# List of known V8 maps.
KNOWN_MAPS = {
0x08081: (136, "ByteArrayMap"),
0x080ad: (132, "MetaMap"),
0x080d9: (131, "NullMap"),
0x08105: (171, "FixedArrayMap"),
0x08131: (4, "OneByteInternalizedStringMap"),
0x0815d: (138, "FreeSpaceMap"),
0x08189: (149, "OnePointerFillerMap"),
0x081b5: (149, "TwoPointerFillerMap"),
0x081e1: (131, "UndefinedMap"),
0x0820d: (129, "HeapNumberMap"),
0x08239: (131, "TheHoleMap"),
0x08265: (131, "BooleanMap"),
0x08291: (131, "UninitializedMap"),
0x082bd: (173, "CellMap"),
0x082e9: (176, "GlobalPropertyCellMap"),
0x08315: (172, "SharedFunctionInfoMap"),
0x08341: (134, "MutableHeapNumberMap"),
0x0836d: (130, "Float32x4Map"),
0x08399: (130, "Int32x4Map"),
0x083c5: (130, "Uint32x4Map"),
0x083f1: (130, "Bool32x4Map"),
0x0841d: (130, "Int16x8Map"),
0x08449: (130, "Uint16x8Map"),
0x08475: (130, "Bool16x8Map"),
0x084a1: (130, "Int8x16Map"),
0x084cd: (130, "Uint8x16Map"),
0x084f9: (130, "Bool8x16Map"),
0x08525: (171, "NativeContextMap"),
0x08551: (133, "CodeMap"),
0x0857d: (171, "ScopeInfoMap"),
0x085a9: (171, "FixedCOWArrayMap"),
0x085d5: (148, "FixedDoubleArrayMap"),
0x08601: (174, "WeakCellMap"),
0x0862d: (175, "TransitionArrayMap"),
0x08659: (68, "OneByteStringMap"),
0x08685: (171, "FunctionContextMap"),
0x086b1: (131, "NoInterceptorResultSentinelMap"),
0x086dd: (131, "ArgumentsMarkerMap"),
0x08709: (131, "ExceptionMap"),
0x08735: (131, "TerminationExceptionMap"),
0x08761: (171, "HashTableMap"),
0x0878d: (171, "OrderedHashTableMap"),
0x087b9: (128, "SymbolMap"),
0x087e5: (64, "StringMap"),
0x08811: (69, "ConsOneByteStringMap"),
0x0883d: (65, "ConsStringMap"),
0x08869: (67, "SlicedStringMap"),
0x08895: (71, "SlicedOneByteStringMap"),
0x088c1: (66, "ExternalStringMap"),
0x088ed: (74, "ExternalStringWithOneByteDataMap"),
0x08919: (70, "ExternalOneByteStringMap"),
0x08945: (70, "NativeSourceStringMap"),
0x08971: (82, "ShortExternalStringMap"),
0x0899d: (90, "ShortExternalStringWithOneByteDataMap"),
0x089c9: (0, "InternalizedStringMap"),
0x089f5: (2, "ExternalInternalizedStringMap"),
0x08a21: (10, "ExternalInternalizedStringWithOneByteDataMap"),
0x08a4d: (6, "ExternalOneByteInternalizedStringMap"),
0x08a79: (18, "ShortExternalInternalizedStringMap"),
0x08aa5: (26, "ShortExternalInternalizedStringWithOneByteDataMap"),
0x08ad1: (22, "ShortExternalOneByteInternalizedStringMap"),
0x08afd: (86, "ShortExternalOneByteStringMap"),
0x08b29: (140, "FixedUint8ArrayMap"),
0x08b55: (139, "FixedInt8ArrayMap"),
0x08b81: (142, "FixedUint16ArrayMap"),
0x08bad: (141, "FixedInt16ArrayMap"),
0x08bd9: (144, "FixedUint32ArrayMap"),
0x08c05: (143, "FixedInt32ArrayMap"),
0x08c31: (145, "FixedFloat32ArrayMap"),
0x08c5d: (146, "FixedFloat64ArrayMap"),
0x08c89: (147, "FixedUint8ClampedArrayMap"),
0x08cb5: (171, "SloppyArgumentsElementsMap"),
0x08ce1: (171, "CatchContextMap"),
0x08d0d: (171, "WithContextMap"),
0x08d39: (171, "BlockContextMap"),
0x08d65: (171, "ModuleContextMap"),
0x08d91: (171, "ScriptContextMap"),
0x08dbd: (171, "ScriptContextTableMap"),
0x08de9: (181, "JSMessageObjectMap"),
0x08e15: (135, "ForeignMap"),
0x08e41: (183, "NeanderMap"),
0x08e6d: (183, "ExternalMap"),
0x08e99: (162, "AllocationMementoMap"),
0x08ec5: (161, "AllocationSiteMap"),
0x08ef1: (165, "PolymorphicCodeCacheMap"),
0x08f1d: (163, "ScriptMap"),
0x08f75: (137, "BytecodeArrayMap"),
0x08fa1: (168, "BoxMap"),
0x08fcd: (152, "ExecutableAccessorInfoMap"),
0x08ff9: (153, "AccessorPairMap"),
0x09025: (154, "AccessCheckInfoMap"),
0x09051: (155, "InterceptorInfoMap"),
0x0907d: (156, "CallHandlerInfoMap"),
0x090a9: (157, "FunctionTemplateInfoMap"),
0x090d5: (158, "ObjectTemplateInfoMap"),
0x09101: (164, "CodeCacheMap"),
0x0912d: (166, "TypeFeedbackInfoMap"),
0x09159: (167, "AliasedArgumentsEntryMap"),
0x09185: (169, "DebugInfoMap"),
0x091b1: (170, "BreakPointInfoMap"),
0x091dd: (177, "PrototypeInfoMap"),
0x09209: (178, "SloppyBlockWithEvalContextExtensionMap"),
}
# List of known V8 objects.
KNOWN_OBJECTS = {
("OLD_SPACE", 0x08081): "NullValue",
("OLD_SPACE", 0x08095): "EmptyDescriptorArray",
("OLD_SPACE", 0x0809d): "EmptyFixedArray",
("OLD_SPACE", 0x080c9): "UndefinedValue",
("OLD_SPACE", 0x080f5): "NanValue",
("OLD_SPACE", 0x08105): "TheHoleValue",
("OLD_SPACE", 0x08129): "TrueValue",
("OLD_SPACE", 0x08161): "FalseValue",
("OLD_SPACE", 0x08189): "empty_string",
("OLD_SPACE", 0x08195): "hidden_string",
("OLD_SPACE", 0x081a1): "UninitializedValue",
("OLD_SPACE", 0x081d1): "EmptyByteArray",
("OLD_SPACE", 0x081d9): "NoInterceptorResultSentinel",
("OLD_SPACE", 0x08219): "ArgumentsMarker",
("OLD_SPACE", 0x08249): "Exception",
("OLD_SPACE", 0x08275): "TerminationException",
("OLD_SPACE", 0x082ad): "NumberStringCache",
("OLD_SPACE", 0x08ab5): "SingleCharacterStringCache",
("OLD_SPACE", 0x08f4d): "StringSplitCache",
("OLD_SPACE", 0x09355): "RegExpMultipleCache",
("OLD_SPACE", 0x0975d): "EmptyFixedUint8Array",
("OLD_SPACE", 0x0976d): "EmptyFixedInt8Array",
("OLD_SPACE", 0x0977d): "EmptyFixedUint16Array",
("OLD_SPACE", 0x0978d): "EmptyFixedInt16Array",
("OLD_SPACE", 0x0979d): "EmptyFixedUint32Array",
("OLD_SPACE", 0x097ad): "EmptyFixedInt32Array",
("OLD_SPACE", 0x097bd): "EmptyFixedFloat32Array",
("OLD_SPACE", 0x097cd): "EmptyFixedFloat64Array",
("OLD_SPACE", 0x097dd): "EmptyFixedUint8ClampedArray",
("OLD_SPACE", 0x097ed): "InfinityValue",
("OLD_SPACE", 0x097fd): "MinusZeroValue",
("OLD_SPACE", 0x0980d): "MinusInfinityValue",
("OLD_SPACE", 0x0981d): "MessageListeners",
("OLD_SPACE", 0x09839): "CodeStubs",
("OLD_SPACE", 0x10201): "DummyVector",
("OLD_SPACE", 0x1403d): "NonMonomorphicCache",
("OLD_SPACE", 0x14651): "PolymorphicCodeCache",
("OLD_SPACE", 0x14659): "NativesSourceCache",
("OLD_SPACE", 0x148f5): "ExperimentalNativesSourceCache",
("OLD_SPACE", 0x14929): "ExtraNativesSourceCache",
("OLD_SPACE", 0x14949): "ExperimentalExtraNativesSourceCache",
("OLD_SPACE", 0x14955): "EmptyScript",
("OLD_SPACE", 0x14995): "IntrinsicFunctionNames",
("OLD_SPACE", 0x2e73d): "UndefinedCell",
("OLD_SPACE", 0x2e745): "ObservationState",
("OLD_SPACE", 0x2e751): "ScriptList",
("OLD_SPACE", 0x2e8d9): "ClearedOptimizedCodeMap",
("OLD_SPACE", 0x2e8e5): "EmptyWeakCell",
("OLD_SPACE", 0x54715): "EmptySlowElementDictionary",
("OLD_SPACE", 0x54761): "WeakObjectToCodeTable",
("OLD_SPACE", 0x54875): "ArrayProtector",
("OLD_SPACE", 0x54885): "EmptyPropertyCell",
("OLD_SPACE", 0x54895): "NoScriptSharedFunctionInfos",
("OLD_SPACE", 0x5711d): "InterpreterTable",
("OLD_SPACE", 0x57325): "EmptyBytecodeArray",
("OLD_SPACE", 0x5a2d1): "StringTable",
("CODE_SPACE", 0x1a2a1): "JsEntryCode",
("CODE_SPACE", 0x1f081): "JsConstructEntryCode",
}
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