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v8/tools/v8heapconst.py
ulan@chromium.org 2638dca48f Make cells pointing to JSObjects weak in optimized code. 
This is done similar to weak embedded objects in optimized code (r17102). The
reference from optimized code to a cell is treated weakly in marking visitors
if the cell points to a JSObject. After marking we iterate over all cells
embedded in optimized code. If a cell is not marked but its value is marked,
then we revive the cell by marking it. Otherwise, the cell value is dead, so
we mark the code for deoptimization.

BUG=v8:2073
TEST=cctest/test-heap/CellsInOptimizedCodeAreWeak
LOG=Y
R=hpayer@chromium.org, mstarzinger@chromium.org

Review URL: https://codereview.chromium.org/117483002

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@18616 ce2b1a6d-e550-0410-aec6-3dcde31c8c00
2014-01-15 11:42:19 +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: "ASCII_STRING_TYPE",
65: "CONS_STRING_TYPE",
69: "CONS_ASCII_STRING_TYPE",
67: "SLICED_STRING_TYPE",
71: "SLICED_ASCII_STRING_TYPE",
66: "EXTERNAL_STRING_TYPE",
70: "EXTERNAL_ASCII_STRING_TYPE",
74: "EXTERNAL_STRING_WITH_ONE_BYTE_DATA_TYPE",
82: "SHORT_EXTERNAL_STRING_TYPE",
86: "SHORT_EXTERNAL_ASCII_STRING_TYPE",
90: "SHORT_EXTERNAL_STRING_WITH_ONE_BYTE_DATA_TYPE",
0: "INTERNALIZED_STRING_TYPE",
4: "ASCII_INTERNALIZED_STRING_TYPE",
1: "CONS_INTERNALIZED_STRING_TYPE",
5: "CONS_ASCII_INTERNALIZED_STRING_TYPE",
2: "EXTERNAL_INTERNALIZED_STRING_TYPE",
6: "EXTERNAL_ASCII_INTERNALIZED_STRING_TYPE",
10: "EXTERNAL_INTERNALIZED_STRING_WITH_ONE_BYTE_DATA_TYPE",
18: "SHORT_EXTERNAL_INTERNALIZED_STRING_TYPE",
22: "SHORT_EXTERNAL_ASCII_INTERNALIZED_STRING_TYPE",
26: "SHORT_EXTERNAL_INTERNALIZED_STRING_WITH_ONE_BYTE_DATA_TYPE",
128: "SYMBOL_TYPE",
129: "MAP_TYPE",
130: "CODE_TYPE",
131: "ODDBALL_TYPE",
132: "CELL_TYPE",
133: "PROPERTY_CELL_TYPE",
134: "HEAP_NUMBER_TYPE",
135: "FOREIGN_TYPE",
136: "BYTE_ARRAY_TYPE",
137: "FREE_SPACE_TYPE",
138: "EXTERNAL_BYTE_ARRAY_TYPE",
139: "EXTERNAL_UNSIGNED_BYTE_ARRAY_TYPE",
140: "EXTERNAL_SHORT_ARRAY_TYPE",
141: "EXTERNAL_UNSIGNED_SHORT_ARRAY_TYPE",
142: "EXTERNAL_INT_ARRAY_TYPE",
143: "EXTERNAL_UNSIGNED_INT_ARRAY_TYPE",
144: "EXTERNAL_FLOAT_ARRAY_TYPE",
145: "EXTERNAL_DOUBLE_ARRAY_TYPE",
146: "EXTERNAL_PIXEL_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",
171: "FIXED_ARRAY_TYPE",
147: "FIXED_DOUBLE_ARRAY_TYPE",
148: "CONSTANT_POOL_ARRAY_TYPE",
172: "SHARED_FUNCTION_INFO_TYPE",
173: "JS_MESSAGE_OBJECT_TYPE",
176: "JS_VALUE_TYPE",
177: "JS_DATE_TYPE",
178: "JS_OBJECT_TYPE",
179: "JS_CONTEXT_EXTENSION_OBJECT_TYPE",
180: "JS_GENERATOR_OBJECT_TYPE",
181: "JS_MODULE_TYPE",
182: "JS_GLOBAL_OBJECT_TYPE",
183: "JS_BUILTINS_OBJECT_TYPE",
184: "JS_GLOBAL_PROXY_TYPE",
185: "JS_ARRAY_TYPE",
186: "JS_ARRAY_BUFFER_TYPE",
187: "JS_TYPED_ARRAY_TYPE",
188: "JS_DATA_VIEW_TYPE",
175: "JS_PROXY_TYPE",
189: "JS_SET_TYPE",
190: "JS_MAP_TYPE",
191: "JS_WEAK_MAP_TYPE",
192: "JS_WEAK_SET_TYPE",
193: "JS_REGEXP_TYPE",
194: "JS_FUNCTION_TYPE",
174: "JS_FUNCTION_PROXY_TYPE",
169: "DEBUG_INFO_TYPE",
170: "BREAK_POINT_INFO_TYPE",
}
# List of known V8 maps.
KNOWN_MAPS = {
0x08081: (136, "ByteArrayMap"),
0x080a9: (129, "MetaMap"),
0x080d1: (131, "OddballMap"),
0x080f9: (4, "AsciiInternalizedStringMap"),
0x08121: (171, "FixedArrayMap"),
0x08149: (134, "HeapNumberMap"),
0x08171: (137, "FreeSpaceMap"),
0x08199: (149, "OnePointerFillerMap"),
0x081c1: (149, "TwoPointerFillerMap"),
0x081e9: (132, "CellMap"),
0x08211: (133, "GlobalPropertyCellMap"),
0x08239: (172, "SharedFunctionInfoMap"),
0x08261: (171, "NativeContextMap"),
0x08289: (130, "CodeMap"),
0x082b1: (171, "ScopeInfoMap"),
0x082d9: (171, "FixedCOWArrayMap"),
0x08301: (147, "FixedDoubleArrayMap"),
0x08329: (148, "ConstantPoolArrayMap"),
0x08351: (171, "HashTableMap"),
0x08379: (128, "SymbolMap"),
0x083a1: (64, "StringMap"),
0x083c9: (68, "AsciiStringMap"),
0x083f1: (65, "ConsStringMap"),
0x08419: (69, "ConsAsciiStringMap"),
0x08441: (67, "SlicedStringMap"),
0x08469: (71, "SlicedAsciiStringMap"),
0x08491: (66, "ExternalStringMap"),
0x084b9: (74, "ExternalStringWithOneByteDataMap"),
0x084e1: (70, "ExternalAsciiStringMap"),
0x08509: (82, "ShortExternalStringMap"),
0x08531: (90, "ShortExternalStringWithOneByteDataMap"),
0x08559: (0, "InternalizedStringMap"),
0x08581: (1, "ConsInternalizedStringMap"),
0x085a9: (5, "ConsAsciiInternalizedStringMap"),
0x085d1: (2, "ExternalInternalizedStringMap"),
0x085f9: (10, "ExternalInternalizedStringWithOneByteDataMap"),
0x08621: (6, "ExternalAsciiInternalizedStringMap"),
0x08649: (18, "ShortExternalInternalizedStringMap"),
0x08671: (26, "ShortExternalInternalizedStringWithOneByteDataMap"),
0x08699: (22, "ShortExternalAsciiInternalizedStringMap"),
0x086c1: (86, "ShortExternalAsciiStringMap"),
0x086e9: (64, "UndetectableStringMap"),
0x08711: (68, "UndetectableAsciiStringMap"),
0x08739: (138, "ExternalByteArrayMap"),
0x08761: (139, "ExternalUnsignedByteArrayMap"),
0x08789: (140, "ExternalShortArrayMap"),
0x087b1: (141, "ExternalUnsignedShortArrayMap"),
0x087d9: (142, "ExternalIntArrayMap"),
0x08801: (143, "ExternalUnsignedIntArrayMap"),
0x08829: (144, "ExternalFloatArrayMap"),
0x08851: (145, "ExternalDoubleArrayMap"),
0x08879: (146, "ExternalPixelArrayMap"),
0x088a1: (171, "NonStrictArgumentsElementsMap"),
0x088c9: (171, "FunctionContextMap"),
0x088f1: (171, "CatchContextMap"),
0x08919: (171, "WithContextMap"),
0x08941: (171, "BlockContextMap"),
0x08969: (171, "ModuleContextMap"),
0x08991: (171, "GlobalContextMap"),
0x089b9: (173, "JSMessageObjectMap"),
0x089e1: (135, "ForeignMap"),
0x08a09: (178, "NeanderMap"),
0x08a31: (162, "AllocationMementoMap"),
0x08a59: (161, "AllocationSiteMap"),
0x08a81: (165, "PolymorphicCodeCacheMap"),
0x08aa9: (163, "ScriptMap"),
0x08af9: (178, "ExternalMap"),
0x08b21: (168, "BoxMap"),
0x08b49: (150, "DeclaredAccessorDescriptorMap"),
0x08b71: (151, "DeclaredAccessorInfoMap"),
0x08b99: (152, "ExecutableAccessorInfoMap"),
0x08bc1: (153, "AccessorPairMap"),
0x08be9: (154, "AccessCheckInfoMap"),
0x08c11: (155, "InterceptorInfoMap"),
0x08c39: (156, "CallHandlerInfoMap"),
0x08c61: (157, "FunctionTemplateInfoMap"),
0x08c89: (158, "ObjectTemplateInfoMap"),
0x08cb1: (159, "SignatureInfoMap"),
0x08cd9: (160, "TypeSwitchInfoMap"),
0x08d01: (164, "CodeCacheMap"),
0x08d29: (166, "TypeFeedbackInfoMap"),
0x08d51: (167, "AliasedArgumentsEntryMap"),
0x08d79: (169, "DebugInfoMap"),
0x08da1: (170, "BreakPointInfoMap"),
}
# List of known V8 objects.
KNOWN_OBJECTS = {
("OLD_POINTER_SPACE", 0x08081): "NullValue",
("OLD_POINTER_SPACE", 0x08091): "UndefinedValue",
("OLD_POINTER_SPACE", 0x080a1): "TheHoleValue",
("OLD_POINTER_SPACE", 0x080b1): "TrueValue",
("OLD_POINTER_SPACE", 0x080c1): "FalseValue",
("OLD_POINTER_SPACE", 0x080d1): "UninitializedValue",
("OLD_POINTER_SPACE", 0x080e1): "NoInterceptorResultSentinel",
("OLD_POINTER_SPACE", 0x080f1): "ArgumentsMarker",
("OLD_POINTER_SPACE", 0x08101): "NumberStringCache",
("OLD_POINTER_SPACE", 0x08909): "SingleCharacterStringCache",
("OLD_POINTER_SPACE", 0x08d11): "StringSplitCache",
("OLD_POINTER_SPACE", 0x09119): "RegExpMultipleCache",
("OLD_POINTER_SPACE", 0x09521): "TerminationException",
("OLD_POINTER_SPACE", 0x09531): "MessageListeners",
("OLD_POINTER_SPACE", 0x0954d): "CodeStubs",
("OLD_POINTER_SPACE", 0x10485): "NonMonomorphicCache",
("OLD_POINTER_SPACE", 0x10a99): "PolymorphicCodeCache",
("OLD_POINTER_SPACE", 0x10aa1): "NativesSourceCache",
("OLD_POINTER_SPACE", 0x10aed): "EmptyScript",
("OLD_POINTER_SPACE", 0x10b25): "IntrinsicFunctionNames",
("OLD_POINTER_SPACE", 0x13b41): "ObservationState",
("OLD_POINTER_SPACE", 0x13b4d): "FrozenSymbol",
("OLD_POINTER_SPACE", 0x13b5d): "ElementsTransitionSymbol",
("OLD_POINTER_SPACE", 0x13b6d): "EmptySlowElementDictionary",
("OLD_POINTER_SPACE", 0x13d09): "ObservedSymbol",
("OLD_POINTER_SPACE", 0x32325): "StringTable",
("OLD_DATA_SPACE", 0x08099): "EmptyDescriptorArray",
("OLD_DATA_SPACE", 0x080a1): "EmptyFixedArray",
("OLD_DATA_SPACE", 0x080a9): "NanValue",
("OLD_DATA_SPACE", 0x08141): "EmptyByteArray",
("OLD_DATA_SPACE", 0x08279): "EmptyExternalByteArray",
("OLD_DATA_SPACE", 0x08285): "EmptyExternalUnsignedByteArray",
("OLD_DATA_SPACE", 0x08291): "EmptyExternalShortArray",
("OLD_DATA_SPACE", 0x0829d): "EmptyExternalUnsignedShortArray",
("OLD_DATA_SPACE", 0x082a9): "EmptyExternalIntArray",
("OLD_DATA_SPACE", 0x082b5): "EmptyExternalUnsignedIntArray",
("OLD_DATA_SPACE", 0x082c1): "EmptyExternalFloatArray",
("OLD_DATA_SPACE", 0x082cd): "EmptyExternalDoubleArray",
("OLD_DATA_SPACE", 0x082d9): "EmptyExternalPixelArray",
("OLD_DATA_SPACE", 0x082e5): "InfinityValue",
("OLD_DATA_SPACE", 0x082f1): "MinusZeroValue",
("CODE_SPACE", 0x14181): "JsConstructEntryCode",
("CODE_SPACE", 0x15c61): "JsEntryCode",
}
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