1/*
2 * Copyright (C) 2007 Eric Seidel <[email protected]>
3 * Copyright (C) 2007-2019 Apple Inc. All rights reserved.
4 *
5 * This library is free software; you can redistribute it and/or
6 * modify it under the terms of the GNU Library General Public
7 * License as published by the Free Software Foundation; either
8 * version 2 of the License, or (at your option) any later version.
9 *
10 * This library is distributed in the hope that it will be useful,
11 * but WITHOUT ANY WARRANTY; without even the implied warranty of
12 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
13 * Library General Public License for more details.
14 *
15 * You should have received a copy of the GNU Library General Public License
16 * along with this library; see the file COPYING.LIB. If not, write to
17 * the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
18 * Boston, MA 02110-1301, USA.
19 *
20 */
21
22#pragma once
23
24#include "ArrayAllocationProfile.h"
25#include "ArrayBufferSharingMode.h"
26#include "BigIntPrototype.h"
27#include "BooleanPrototype.h"
28#include "ErrorType.h"
29#include "ExceptionHelpers.h"
30#include "InternalFunction.h"
31#include "JSArray.h"
32#include "JSArrayBufferPrototype.h"
33#include "JSClassRef.h"
34#include "JSGlobalLexicalEnvironment.h"
35#include "JSPromiseDeferred.h"
36#include "JSSegmentedVariableObject.h"
37#include "JSWeakObjectMapRefInternal.h"
38#include "LazyProperty.h"
39#include "LazyClassStructure.h"
40#include "NumberPrototype.h"
41#include "ParserModes.h"
42#include "RegExpGlobalData.h"
43#include "RuntimeFlags.h"
44#include "SpecialPointer.h"
45#include "StringPrototype.h"
46#include "SymbolPrototype.h"
47#include "VM.h"
48#include "Watchpoint.h"
49#include <JavaScriptCore/JSBase.h>
50#include <array>
51#include <wtf/HashSet.h>
52#include <wtf/RetainPtr.h>
53
54struct OpaqueJSClass;
55struct OpaqueJSClassContextData;
56OBJC_CLASS JSWrapperMap;
57
58namespace Inspector {
59class JSGlobalObjectInspectorController;
60}
61
62namespace JSC {
63class ArrayConstructor;
64class ArrayPrototype;
65class AsyncIteratorPrototype;
66class AsyncFunctionPrototype;
67class AsyncGeneratorPrototype;
68class AsyncGeneratorFunctionPrototype;
69class BooleanPrototype;
70class ConsoleClient;
71class Debugger;
72class ErrorConstructor;
73class ErrorPrototype;
74class EvalCodeBlock;
75class EvalExecutable;
76class FunctionConstructor;
77class FunctionPrototype;
78class GeneratorPrototype;
79class GeneratorFunctionPrototype;
80class GetterSetter;
81class GlobalCodeBlock;
82class IndirectEvalExecutable;
83class InputCursor;
84class IntlObject;
85class IntlCollator;
86class JSArrayBuffer;
87class JSArrayBufferPrototype;
88class JSCallee;
89class JSGlobalObjectDebuggable;
90class JSInternalPromise;
91class JSModuleLoader;
92class JSModuleRecord;
93class JSPromise;
94class JSPromiseConstructor;
95class JSPromisePrototype;
96class JSSharedArrayBuffer;
97class JSSharedArrayBufferPrototype;
98class JSTypedArrayViewConstructor;
99class JSTypedArrayViewPrototype;
100class DirectEvalExecutable;
101class LLIntOffsetsExtractor;
102class MapPrototype;
103class Microtask;
104class ModuleLoader;
105class ModuleProgramExecutable;
106class NativeErrorConstructorBase;
107class NullGetterFunction;
108class NullSetterFunction;
109class ObjectConstructor;
110class ProgramCodeBlock;
111class ProgramExecutable;
112class RegExpConstructor;
113class RegExpPrototype;
114class SetPrototype;
115class SourceCode;
116class SourceOrigin;
117class UnlinkedModuleProgramCodeBlock;
118class VariableEnvironment;
119struct ActivationStackNode;
120struct HashTable;
121
122#ifdef JSC_GLIB_API_ENABLED
123class WrapperMap;
124#endif
125
126template<typename Watchpoint> class ObjectPropertyChangeAdaptiveWatchpoint;
127
128#define DEFINE_STANDARD_BUILTIN(macro, upperName, lowerName) macro(upperName, lowerName, lowerName, JS ## upperName, upperName, object)
129
130#define FOR_EACH_SIMPLE_BUILTIN_TYPE_WITH_CONSTRUCTOR(macro) \
131 macro(String, string, stringObject, StringObject, String, object) \
132 macro(Map, map, map, JSMap, Map, object) \
133 macro(Set, set, set, JSSet, Set, object) \
134 macro(JSPromise, promise, promise, JSPromise, Promise, object)
135
136#define FOR_BIG_INT_BUILTIN_TYPE_WITH_CONSTRUCTOR(macro) \
137 macro(BigInt, bigInt, bigIntObject, BigIntObject, BigInt, object)
138
139#define FOR_EACH_BUILTIN_DERIVED_ITERATOR_TYPE(macro) \
140 macro(StringIterator, stringIterator, stringIterator, JSStringIterator, StringIterator, iterator) \
141
142#define FOR_EACH_SIMPLE_BUILTIN_TYPE(macro) \
143 FOR_EACH_SIMPLE_BUILTIN_TYPE_WITH_CONSTRUCTOR(macro) \
144 macro(JSInternalPromise, internalPromise, internalPromise, JSInternalPromise, InternalPromise, object) \
145
146#define FOR_EACH_LAZY_BUILTIN_TYPE_WITH_DECLARATION(macro) \
147 macro(Boolean, boolean, booleanObject, BooleanObject, Boolean, object) \
148 macro(Date, date, date, DateInstance, Date, object) \
149 macro(Error, error, error, ErrorInstance, Error, object) \
150 macro(Number, number, numberObject, NumberObject, Number, object) \
151 macro(Symbol, symbol, symbolObject, SymbolObject, Symbol, object) \
152 macro(WeakObjectRef, weakObjectRef, weakObjectRef, JSWeakObjectRef, WeakRef, object) \
153 DEFINE_STANDARD_BUILTIN(macro, WeakMap, weakMap) \
154 DEFINE_STANDARD_BUILTIN(macro, WeakSet, weakSet) \
155
156#define FOR_EACH_LAZY_BUILTIN_TYPE(macro) \
157 FOR_EACH_LAZY_BUILTIN_TYPE_WITH_DECLARATION(macro) \
158 macro(JSArrayBuffer, arrayBuffer, arrayBuffer, JSArrayBuffer, ArrayBuffer, object) \
159
160#if ENABLE(WEBASSEMBLY)
161#define FOR_EACH_WEBASSEMBLY_CONSTRUCTOR_TYPE(macro) \
162 macro(WebAssemblyCompileError, webAssemblyCompileError, webAssemblyCompileError, JSWebAssemblyCompileError, CompileError, error) \
163 macro(WebAssemblyInstance, webAssemblyInstance, webAssemblyInstance, JSWebAssemblyInstance, Instance, object) \
164 macro(WebAssemblyLinkError, webAssemblyLinkError, webAssemblyLinkError, JSWebAssemblyLinkError, LinkError, error) \
165 macro(WebAssemblyMemory, webAssemblyMemory, webAssemblyMemory, JSWebAssemblyMemory, Memory, object) \
166 macro(WebAssemblyModule, webAssemblyModule, webAssemblyModule, JSWebAssemblyModule, Module, object) \
167 macro(WebAssemblyRuntimeError, webAssemblyRuntimeError, webAssemblyRuntimeError, JSWebAssemblyRuntimeError, RuntimeError, error) \
168 macro(WebAssemblyTable, webAssemblyTable, webAssemblyTable, JSWebAssemblyTable, Table, object)
169#else
170#define FOR_EACH_WEBASSEMBLY_CONSTRUCTOR_TYPE(macro)
171#endif // ENABLE(WEBASSEMBLY)
172
173#define DECLARE_SIMPLE_BUILTIN_TYPE(capitalName, lowerName, properName, instanceType, jsName, prototypeBase) \
174 class JS ## capitalName; \
175 class capitalName ## Prototype; \
176 class capitalName ## Constructor;
177
178class IteratorPrototype;
179FOR_EACH_SIMPLE_BUILTIN_TYPE(DECLARE_SIMPLE_BUILTIN_TYPE)
180FOR_BIG_INT_BUILTIN_TYPE_WITH_CONSTRUCTOR(DECLARE_SIMPLE_BUILTIN_TYPE)
181FOR_EACH_LAZY_BUILTIN_TYPE_WITH_DECLARATION(DECLARE_SIMPLE_BUILTIN_TYPE)
182FOR_EACH_BUILTIN_DERIVED_ITERATOR_TYPE(DECLARE_SIMPLE_BUILTIN_TYPE)
183FOR_EACH_WEBASSEMBLY_CONSTRUCTOR_TYPE(DECLARE_SIMPLE_BUILTIN_TYPE)
184
185#undef DECLARE_SIMPLE_BUILTIN_TYPE
186
187enum class JSPromiseRejectionOperation : unsigned {
188 Reject, // When a promise is rejected without any handlers.
189 Handle, // When a handler is added to a rejected promise for the first time.
190};
191
192struct GlobalObjectMethodTable {
193 typedef bool (*SupportsRichSourceInfoFunctionPtr)(const JSGlobalObject*);
194 SupportsRichSourceInfoFunctionPtr supportsRichSourceInfo;
195
196 typedef bool (*ShouldInterruptScriptFunctionPtr)(const JSGlobalObject*);
197 ShouldInterruptScriptFunctionPtr shouldInterruptScript;
198
199 typedef RuntimeFlags (*JavaScriptRuntimeFlagsFunctionPtr)(const JSGlobalObject*);
200 JavaScriptRuntimeFlagsFunctionPtr javaScriptRuntimeFlags;
201
202 typedef void (*QueueTaskToEventLoopFunctionPtr)(JSGlobalObject&, Ref<Microtask>&&);
203 QueueTaskToEventLoopFunctionPtr queueTaskToEventLoop;
204
205 typedef bool (*ShouldInterruptScriptBeforeTimeoutPtr)(const JSGlobalObject*);
206 ShouldInterruptScriptBeforeTimeoutPtr shouldInterruptScriptBeforeTimeout;
207
208 typedef JSInternalPromise* (*ModuleLoaderImportModulePtr)(JSGlobalObject*, ExecState*, JSModuleLoader*, JSString*, JSValue, const SourceOrigin&);
209 ModuleLoaderImportModulePtr moduleLoaderImportModule;
210
211 typedef Identifier (*ModuleLoaderResolvePtr)(JSGlobalObject*, ExecState*, JSModuleLoader*, JSValue, JSValue, JSValue);
212 ModuleLoaderResolvePtr moduleLoaderResolve;
213
214 typedef JSInternalPromise* (*ModuleLoaderFetchPtr)(JSGlobalObject*, ExecState*, JSModuleLoader*, JSValue, JSValue, JSValue);
215 ModuleLoaderFetchPtr moduleLoaderFetch;
216
217 typedef JSObject* (*ModuleLoaderCreateImportMetaPropertiesPtr)(JSGlobalObject*, ExecState*, JSModuleLoader*, JSValue, JSModuleRecord*, JSValue);
218 ModuleLoaderCreateImportMetaPropertiesPtr moduleLoaderCreateImportMetaProperties;
219
220 typedef JSValue (*ModuleLoaderEvaluatePtr)(JSGlobalObject*, ExecState*, JSModuleLoader*, JSValue, JSValue, JSValue);
221 ModuleLoaderEvaluatePtr moduleLoaderEvaluate;
222
223 typedef void (*PromiseRejectionTrackerPtr)(JSGlobalObject*, ExecState*, JSPromise*, JSPromiseRejectionOperation);
224 PromiseRejectionTrackerPtr promiseRejectionTracker;
225
226 typedef String (*DefaultLanguageFunctionPtr)();
227 DefaultLanguageFunctionPtr defaultLanguage;
228
229 typedef void (*CompileStreamingPtr)(JSGlobalObject*, ExecState*, JSPromiseDeferred*, JSValue);
230 CompileStreamingPtr compileStreaming;
231
232 typedef void (*InstantiateStreamingPtr)(JSGlobalObject*, ExecState*, JSPromiseDeferred*, JSValue, JSObject*);
233 InstantiateStreamingPtr instantiateStreaming;
234};
235
236class JSGlobalObject : public JSSegmentedVariableObject {
237private:
238 typedef HashSet<RefPtr<OpaqueJSWeakObjectMap>> WeakMapSet;
239 typedef HashMap<OpaqueJSClass*, std::unique_ptr<OpaqueJSClassContextData>> OpaqueJSClassDataMap;
240
241 struct JSGlobalObjectRareData {
242 WTF_MAKE_FAST_ALLOCATED;
243 public:
244 JSGlobalObjectRareData()
245 : profileGroup(0)
246 {
247 }
248
249 WeakMapSet weakMaps;
250 unsigned profileGroup;
251
252 OpaqueJSClassDataMap opaqueJSClassData;
253 };
254
255// Our hashtable code-generator tries to access these properties, so we make them public.
256// However, we'd like it better if they could be protected.
257public:
258 template<typename T> using Initializer = typename LazyProperty<JSGlobalObject, T>::Initializer;
259
260 Register m_globalCallFrame[CallFrame::headerSizeInRegisters];
261
262 WriteBarrier<JSObject> m_globalThis;
263
264 WriteBarrier<JSGlobalLexicalEnvironment> m_globalLexicalEnvironment;
265 WriteBarrier<JSScope> m_globalScopeExtension;
266 WriteBarrier<JSCallee> m_globalCallee;
267 WriteBarrier<JSCallee> m_stackOverflowFrameCallee;
268
269 LazyClassStructure m_evalErrorStructure;
270 LazyClassStructure m_rangeErrorStructure;
271 LazyClassStructure m_referenceErrorStructure;
272 LazyClassStructure m_syntaxErrorStructure;
273 LazyClassStructure m_typeErrorStructure;
274 LazyClassStructure m_URIErrorStructure;
275
276 WriteBarrier<ObjectConstructor> m_objectConstructor;
277 WriteBarrier<ArrayConstructor> m_arrayConstructor;
278 WriteBarrier<JSPromiseConstructor> m_promiseConstructor;
279 WriteBarrier<JSInternalPromiseConstructor> m_internalPromiseConstructor;
280
281#if ENABLE(INTL)
282 WriteBarrier<IntlCollator> m_defaultCollator;
283 LazyProperty<JSGlobalObject, Structure> m_collatorStructure;
284 LazyProperty<JSGlobalObject, Structure> m_numberFormatStructure;
285 LazyProperty<JSGlobalObject, Structure> m_dateTimeFormatStructure;
286 LazyProperty<JSGlobalObject, Structure> m_pluralRulesStructure;
287#endif
288 WriteBarrier<NullGetterFunction> m_nullGetterFunction;
289 WriteBarrier<NullSetterFunction> m_nullSetterFunction;
290
291 LazyProperty<JSGlobalObject, JSFunction> m_parseIntFunction;
292 LazyProperty<JSGlobalObject, JSFunction> m_parseFloatFunction;
293
294 WriteBarrier<JSFunction> m_callFunction;
295 WriteBarrier<JSFunction> m_applyFunction;
296 WriteBarrier<JSFunction> m_throwTypeErrorFunction;
297 LazyProperty<JSGlobalObject, JSFunction> m_arrayProtoToStringFunction;
298 LazyProperty<JSGlobalObject, JSFunction> m_arrayProtoValuesFunction;
299 LazyProperty<JSGlobalObject, JSFunction> m_evalFunction;
300 LazyProperty<JSGlobalObject, JSFunction> m_initializePromiseFunction;
301 LazyProperty<JSGlobalObject, JSFunction> m_iteratorProtocolFunction;
302 LazyProperty<JSGlobalObject, JSFunction> m_promiseResolveFunction;
303 WriteBarrier<JSFunction> m_objectProtoValueOfFunction;
304 WriteBarrier<JSFunction> m_numberProtoToStringFunction;
305 WriteBarrier<JSFunction> m_newPromiseCapabilityFunction;
306 WriteBarrier<JSFunction> m_functionProtoHasInstanceSymbolFunction;
307 LazyProperty<JSGlobalObject, GetterSetter> m_throwTypeErrorGetterSetter;
308 WriteBarrier<JSObject> m_regExpProtoExec;
309 WriteBarrier<JSObject> m_regExpProtoSymbolReplace;
310 WriteBarrier<JSObject> m_regExpProtoGlobalGetter;
311 WriteBarrier<JSObject> m_regExpProtoUnicodeGetter;
312 WriteBarrier<GetterSetter> m_throwTypeErrorArgumentsCalleeAndCallerGetterSetter;
313
314 LazyProperty<JSGlobalObject, JSModuleLoader> m_moduleLoader;
315
316 WriteBarrier<ObjectPrototype> m_objectPrototype;
317 WriteBarrier<FunctionPrototype> m_functionPrototype;
318 WriteBarrier<ArrayPrototype> m_arrayPrototype;
319 WriteBarrier<RegExpPrototype> m_regExpPrototype;
320 WriteBarrier<IteratorPrototype> m_iteratorPrototype;
321 WriteBarrier<AsyncIteratorPrototype> m_asyncIteratorPrototype;
322 WriteBarrier<GeneratorFunctionPrototype> m_generatorFunctionPrototype;
323 WriteBarrier<GeneratorPrototype> m_generatorPrototype;
324 WriteBarrier<AsyncGeneratorPrototype> m_asyncGeneratorPrototype;
325
326 LazyProperty<JSGlobalObject, Structure> m_debuggerScopeStructure;
327 LazyProperty<JSGlobalObject, Structure> m_withScopeStructure;
328 LazyProperty<JSGlobalObject, Structure> m_strictEvalActivationStructure;
329 WriteBarrier<Structure> m_lexicalEnvironmentStructure;
330 LazyProperty<JSGlobalObject, Structure> m_moduleEnvironmentStructure;
331 WriteBarrier<Structure> m_directArgumentsStructure;
332 WriteBarrier<Structure> m_scopedArgumentsStructure;
333 WriteBarrier<Structure> m_clonedArgumentsStructure;
334
335 WriteBarrier<Structure> m_objectStructureForObjectConstructor;
336
337 // Lists the actual structures used for having these particular indexing shapes.
338 WriteBarrier<Structure> m_originalArrayStructureForIndexingShape[NumberOfArrayIndexingModes];
339 // Lists the structures we should use during allocation for these particular indexing shapes.
340 // These structures will differ from the originals list above when we are having a bad time.
341 WriteBarrier<Structure> m_arrayStructureForIndexingShapeDuringAllocation[NumberOfArrayIndexingModes];
342
343 LazyProperty<JSGlobalObject, Structure> m_callbackConstructorStructure;
344 LazyProperty<JSGlobalObject, Structure> m_callbackFunctionStructure;
345 LazyProperty<JSGlobalObject, Structure> m_callbackObjectStructure;
346#if JSC_OBJC_API_ENABLED
347 LazyProperty<JSGlobalObject, Structure> m_objcCallbackFunctionStructure;
348 LazyProperty<JSGlobalObject, Structure> m_objcWrapperObjectStructure;
349#endif
350#ifdef JSC_GLIB_API_ENABLED
351 LazyProperty<JSGlobalObject, Structure> m_glibCallbackFunctionStructure;
352 LazyProperty<JSGlobalObject, Structure> m_glibWrapperObjectStructure;
353#endif
354 WriteBarrier<Structure> m_nullPrototypeObjectStructure;
355 WriteBarrier<Structure> m_calleeStructure;
356
357 WriteBarrier<Structure> m_hostFunctionStructure;
358
359 struct FunctionStructures {
360 WriteBarrier<Structure> arrowFunctionStructure;
361 WriteBarrier<Structure> sloppyFunctionStructure;
362 WriteBarrier<Structure> strictFunctionStructure;
363 };
364 FunctionStructures m_builtinFunctions;
365 FunctionStructures m_ordinaryFunctions;
366
367 LazyProperty<JSGlobalObject, Structure> m_boundFunctionStructure;
368 LazyProperty<JSGlobalObject, Structure> m_customGetterSetterFunctionStructure;
369 WriteBarrier<Structure> m_getterSetterStructure;
370 LazyProperty<JSGlobalObject, Structure> m_nativeStdFunctionStructure;
371 PropertyOffset m_functionNameOffset;
372 WriteBarrier<Structure> m_regExpStructure;
373 WriteBarrier<AsyncFunctionPrototype> m_asyncFunctionPrototype;
374 WriteBarrier<AsyncGeneratorFunctionPrototype> m_asyncGeneratorFunctionPrototype;
375 WriteBarrier<Structure> m_asyncFunctionStructure;
376 WriteBarrier<Structure> m_asyncGeneratorFunctionStructure;
377 WriteBarrier<Structure> m_generatorFunctionStructure;
378 LazyProperty<JSGlobalObject, Structure> m_iteratorResultObjectStructure;
379 WriteBarrier<Structure> m_regExpMatchesArrayStructure;
380 WriteBarrier<Structure> m_regExpMatchesArrayWithGroupsStructure;
381 LazyProperty<JSGlobalObject, Structure> m_moduleRecordStructure;
382 LazyProperty<JSGlobalObject, Structure> m_moduleNamespaceObjectStructure;
383 LazyProperty<JSGlobalObject, Structure> m_proxyObjectStructure;
384 LazyProperty<JSGlobalObject, Structure> m_callableProxyObjectStructure;
385 LazyProperty<JSGlobalObject, Structure> m_proxyRevokeStructure;
386#if ENABLE(SHARED_ARRAY_BUFFER)
387 WriteBarrier<JSArrayBufferPrototype> m_sharedArrayBufferPrototype;
388 WriteBarrier<Structure> m_sharedArrayBufferStructure;
389#endif
390
391#define DEFINE_STORAGE_FOR_SIMPLE_TYPE(capitalName, lowerName, properName, instanceType, jsName, prototypeBase) \
392 WriteBarrier<capitalName ## Prototype> m_ ## lowerName ## Prototype; \
393 WriteBarrier<Structure> m_ ## properName ## Structure;
394
395#define DEFINE_STORAGE_FOR_LAZY_TYPE(capitalName, lowerName, properName, instanceType, jsName, prototypeBase) \
396 LazyClassStructure m_ ## properName ## Structure;
397
398 FOR_EACH_SIMPLE_BUILTIN_TYPE(DEFINE_STORAGE_FOR_SIMPLE_TYPE)
399 FOR_BIG_INT_BUILTIN_TYPE_WITH_CONSTRUCTOR(DEFINE_STORAGE_FOR_SIMPLE_TYPE)
400 FOR_EACH_BUILTIN_DERIVED_ITERATOR_TYPE(DEFINE_STORAGE_FOR_SIMPLE_TYPE)
401
402#if ENABLE(WEBASSEMBLY)
403 LazyProperty<JSGlobalObject, Structure> m_webAssemblyModuleRecordStructure;
404 LazyProperty<JSGlobalObject, Structure> m_webAssemblyFunctionStructure;
405 LazyProperty<JSGlobalObject, Structure> m_jsToWasmICCalleeStructure;
406 LazyProperty<JSGlobalObject, Structure> m_webAssemblyWrapperFunctionStructure;
407 LazyProperty<JSGlobalObject, Structure> m_webAssemblyToJSCalleeStructure;
408 FOR_EACH_WEBASSEMBLY_CONSTRUCTOR_TYPE(DEFINE_STORAGE_FOR_LAZY_TYPE)
409#endif // ENABLE(WEBASSEMBLY)
410
411 FOR_EACH_LAZY_BUILTIN_TYPE(DEFINE_STORAGE_FOR_LAZY_TYPE)
412
413#undef DEFINE_STORAGE_FOR_SIMPLE_TYPE
414#undef DEFINE_STORAGE_FOR_LAZY_TYPE
415
416 WriteBarrier<GetterSetter> m_speciesGetterSetter;
417
418 LazyProperty<JSGlobalObject, JSTypedArrayViewPrototype> m_typedArrayProto;
419 LazyProperty<JSGlobalObject, JSTypedArrayViewConstructor> m_typedArraySuperConstructor;
420
421#define DECLARE_TYPED_ARRAY_TYPE_STRUCTURE(name) LazyClassStructure m_typedArray ## name;
422 FOR_EACH_TYPED_ARRAY_TYPE(DECLARE_TYPED_ARRAY_TYPE_STRUCTURE)
423#undef DECLARE_TYPED_ARRAY_TYPE_STRUCTURE
424
425 JSCell* m_specialPointers[Special::TableSize]; // Special pointers used by the LLInt and JIT.
426 JSCell* m_linkTimeConstants[LinkTimeConstantCount];
427
428 String m_name;
429
430 Debugger* m_debugger;
431
432 VM& m_vm;
433
434#if ENABLE(REMOTE_INSPECTOR)
435 std::unique_ptr<Inspector::JSGlobalObjectInspectorController> m_inspectorController;
436 std::unique_ptr<JSGlobalObjectDebuggable> m_inspectorDebuggable;
437#endif
438
439#if ENABLE(INTL)
440 HashSet<String> m_intlCollatorAvailableLocales;
441 HashSet<String> m_intlDateTimeFormatAvailableLocales;
442 HashSet<String> m_intlNumberFormatAvailableLocales;
443 HashSet<String> m_intlPluralRulesAvailableLocales;
444#endif // ENABLE(INTL)
445
446 RefPtr<WatchpointSet> m_masqueradesAsUndefinedWatchpoint;
447 RefPtr<WatchpointSet> m_havingABadTimeWatchpoint;
448 RefPtr<WatchpointSet> m_varInjectionWatchpoint;
449
450 std::unique_ptr<JSGlobalObjectRareData> m_rareData;
451
452 WeakRandom m_weakRandom;
453 RegExpGlobalData m_regExpGlobalData;
454
455 JSCallee* stackOverflowFrameCallee() const { return m_stackOverflowFrameCallee.get(); }
456
457 InlineWatchpointSet& arrayIteratorProtocolWatchpoint() { return m_arrayIteratorProtocolWatchpoint; }
458 InlineWatchpointSet& mapIteratorProtocolWatchpoint() { return m_mapIteratorProtocolWatchpoint; }
459 InlineWatchpointSet& setIteratorProtocolWatchpoint() { return m_setIteratorProtocolWatchpoint; }
460 InlineWatchpointSet& stringIteratorProtocolWatchpoint() { return m_stringIteratorProtocolWatchpoint; }
461 InlineWatchpointSet& mapSetWatchpoint() { return m_mapSetWatchpoint; }
462 InlineWatchpointSet& setAddWatchpoint() { return m_setAddWatchpoint; }
463 InlineWatchpointSet& arraySpeciesWatchpoint() { return m_arraySpeciesWatchpoint; }
464 InlineWatchpointSet& numberToStringWatchpoint()
465 {
466 RELEASE_ASSERT(VM::canUseJIT());
467 return m_numberToStringWatchpoint;
468 }
469 // If this hasn't been invalidated, it means the array iterator protocol
470 // is not observable to user code yet.
471 InlineWatchpointSet m_arrayIteratorProtocolWatchpoint;
472 InlineWatchpointSet m_mapIteratorProtocolWatchpoint;
473 InlineWatchpointSet m_setIteratorProtocolWatchpoint;
474 InlineWatchpointSet m_stringIteratorProtocolWatchpoint;
475 InlineWatchpointSet m_mapSetWatchpoint;
476 InlineWatchpointSet m_setAddWatchpoint;
477 InlineWatchpointSet m_arraySpeciesWatchpoint;
478 InlineWatchpointSet m_numberToStringWatchpoint;
479 std::unique_ptr<ObjectPropertyChangeAdaptiveWatchpoint<InlineWatchpointSet>> m_arrayConstructorSpeciesWatchpoint;
480 std::unique_ptr<ObjectPropertyChangeAdaptiveWatchpoint<InlineWatchpointSet>> m_arrayPrototypeConstructorWatchpoint;
481 std::unique_ptr<ObjectPropertyChangeAdaptiveWatchpoint<InlineWatchpointSet>> m_arrayPrototypeSymbolIteratorWatchpoint;
482 std::unique_ptr<ObjectPropertyChangeAdaptiveWatchpoint<InlineWatchpointSet>> m_arrayIteratorPrototypeNext;
483 std::unique_ptr<ObjectPropertyChangeAdaptiveWatchpoint<InlineWatchpointSet>> m_mapPrototypeSymbolIteratorWatchpoint;
484 std::unique_ptr<ObjectPropertyChangeAdaptiveWatchpoint<InlineWatchpointSet>> m_mapIteratorPrototypeNextWatchpoint;
485 std::unique_ptr<ObjectPropertyChangeAdaptiveWatchpoint<InlineWatchpointSet>> m_setPrototypeSymbolIteratorWatchpoint;
486 std::unique_ptr<ObjectPropertyChangeAdaptiveWatchpoint<InlineWatchpointSet>> m_setIteratorPrototypeNextWatchpoint;
487 std::unique_ptr<ObjectPropertyChangeAdaptiveWatchpoint<InlineWatchpointSet>> m_stringPrototypeSymbolIteratorWatchpoint;
488 std::unique_ptr<ObjectPropertyChangeAdaptiveWatchpoint<InlineWatchpointSet>> m_stringIteratorPrototypeNextWatchpoint;
489 std::unique_ptr<ObjectPropertyChangeAdaptiveWatchpoint<InlineWatchpointSet>> m_mapPrototypeSetWatchpoint;
490 std::unique_ptr<ObjectPropertyChangeAdaptiveWatchpoint<InlineWatchpointSet>> m_setPrototypeAddWatchpoint;
491 std::unique_ptr<ObjectPropertyChangeAdaptiveWatchpoint<InlineWatchpointSet>> m_numberPrototypeToStringWatchpoint;
492
493 bool isArrayPrototypeIteratorProtocolFastAndNonObservable();
494 bool isMapPrototypeIteratorProtocolFastAndNonObservable();
495 bool isSetPrototypeIteratorProtocolFastAndNonObservable();
496 bool isStringPrototypeIteratorProtocolFastAndNonObservable();
497 bool isMapPrototypeSetFastAndNonObservable();
498 bool isSetPrototypeAddFastAndNonObservable();
499
500#if ENABLE(DFG_JIT)
501 using ReferencedGlobalPropertyWatchpointSets = HashMap<RefPtr<UniquedStringImpl>, Ref<WatchpointSet>, IdentifierRepHash>;
502 ReferencedGlobalPropertyWatchpointSets m_referencedGlobalPropertyWatchpointSets;
503 ConcurrentJSLock m_referencedGlobalPropertyWatchpointSetsLock;
504#endif
505
506 bool m_evalEnabled { true };
507 bool m_webAssemblyEnabled { true };
508 unsigned m_globalLexicalBindingEpoch { 1 };
509 String m_evalDisabledErrorMessage;
510 String m_webAssemblyDisabledErrorMessage;
511 RuntimeFlags m_runtimeFlags;
512 ConsoleClient* m_consoleClient { nullptr };
513 Optional<unsigned> m_stackTraceLimit;
514
515#if !ASSERT_DISABLED
516 const ExecState* m_callFrameAtDebuggerEntry { nullptr };
517#endif
518
519 static JS_EXPORT_PRIVATE const GlobalObjectMethodTable s_globalObjectMethodTable;
520 const GlobalObjectMethodTable* m_globalObjectMethodTable;
521
522 void createRareDataIfNeeded()
523 {
524 if (m_rareData)
525 return;
526 m_rareData = std::make_unique<JSGlobalObjectRareData>();
527 }
528
529public:
530 typedef JSSegmentedVariableObject Base;
531 static const unsigned StructureFlags = Base::StructureFlags | HasStaticPropertyTable | OverridesGetOwnPropertySlot | OverridesGetPropertyNames | IsImmutablePrototypeExoticObject;
532
533 JS_EXPORT_PRIVATE static JSGlobalObject* create(VM&, Structure*);
534
535 DECLARE_EXPORT_INFO;
536
537 bool hasDebugger() const;
538 bool hasInteractiveDebugger() const;
539 const RuntimeFlags& runtimeFlags() const { return m_runtimeFlags; }
540
541#if ENABLE(DFG_JIT)
542 WatchpointSet* getReferencedPropertyWatchpointSet(UniquedStringImpl*);
543 WatchpointSet& ensureReferencedPropertyWatchpointSet(UniquedStringImpl*);
544#endif
545
546 Optional<unsigned> stackTraceLimit() const { return m_stackTraceLimit; }
547 void setStackTraceLimit(Optional<unsigned> value) { m_stackTraceLimit = value; }
548
549protected:
550 JS_EXPORT_PRIVATE explicit JSGlobalObject(VM&, Structure*, const GlobalObjectMethodTable* = nullptr);
551
552 JS_EXPORT_PRIVATE void finishCreation(VM&);
553
554 JS_EXPORT_PRIVATE void finishCreation(VM&, JSObject*);
555
556 void addGlobalVar(const Identifier&);
557
558public:
559 JS_EXPORT_PRIVATE ~JSGlobalObject();
560 JS_EXPORT_PRIVATE static void destroy(JSCell*);
561
562 JS_EXPORT_PRIVATE static void visitChildren(JSCell*, SlotVisitor&);
563
564 JS_EXPORT_PRIVATE static bool getOwnPropertySlot(JSObject*, ExecState*, PropertyName, PropertySlot&);
565 JS_EXPORT_PRIVATE static bool put(JSCell*, ExecState*, PropertyName, JSValue, PutPropertySlot&);
566
567 JS_EXPORT_PRIVATE static void defineGetter(JSObject*, ExecState*, PropertyName, JSObject* getterFunc, unsigned attributes);
568 JS_EXPORT_PRIVATE static void defineSetter(JSObject*, ExecState*, PropertyName, JSObject* setterFunc, unsigned attributes);
569 JS_EXPORT_PRIVATE static bool defineOwnProperty(JSObject*, ExecState*, PropertyName, const PropertyDescriptor&, bool shouldThrow);
570
571 void addVar(ExecState* exec, const Identifier& propertyName)
572 {
573 if (!hasOwnProperty(exec, propertyName))
574 addGlobalVar(propertyName);
575 }
576 void addFunction(ExecState*, const Identifier&);
577
578 JSScope* globalScope() { return m_globalLexicalEnvironment.get(); }
579 JSGlobalLexicalEnvironment* globalLexicalEnvironment() { return m_globalLexicalEnvironment.get(); }
580
581 JSScope* globalScopeExtension() { return m_globalScopeExtension.get(); }
582 void setGlobalScopeExtension(JSScope*);
583 void clearGlobalScopeExtension();
584
585 // The following accessors return pristine values, even if a script
586 // replaces the global object's associated property.
587
588 GetterSetter* speciesGetterSetter() const { return m_speciesGetterSetter.get(); }
589
590 ArrayConstructor* arrayConstructor() const { return m_arrayConstructor.get(); }
591 ObjectConstructor* objectConstructor() const { return m_objectConstructor.get(); }
592 JSPromiseConstructor* promiseConstructor() const { return m_promiseConstructor.get(); }
593 JSInternalPromiseConstructor* internalPromiseConstructor() const { return m_internalPromiseConstructor.get(); }
594
595#if ENABLE(INTL)
596 IntlCollator* defaultCollator(ExecState*);
597#endif
598
599 NullGetterFunction* nullGetterFunction() const { return m_nullGetterFunction.get(); }
600 NullSetterFunction* nullSetterFunction() const { return m_nullSetterFunction.get(); }
601
602 JSFunction* parseIntFunction() const { return m_parseIntFunction.get(this); }
603 JSFunction* parseFloatFunction() const { return m_parseFloatFunction.get(this); }
604
605 JSFunction* evalFunction() const { return m_evalFunction.get(this); }
606 JSFunction* callFunction() const { return m_callFunction.get(); }
607 JSFunction* applyFunction() const { return m_applyFunction.get(); }
608 JSFunction* throwTypeErrorFunction() const { return m_throwTypeErrorFunction.get(); }
609 JSFunction* arrayProtoToStringFunction() const { return m_arrayProtoToStringFunction.get(this); }
610 JSFunction* arrayProtoValuesFunction() const { return m_arrayProtoValuesFunction.get(this); }
611 JSFunction* initializePromiseFunction() const { return m_initializePromiseFunction.get(this); }
612 JSFunction* iteratorProtocolFunction() const { return m_iteratorProtocolFunction.get(this); }
613 JSFunction* promiseResolveFunction() const { return m_promiseResolveFunction.get(this); }
614 JSFunction* objectProtoValueOfFunction() const { return m_objectProtoValueOfFunction.get(); }
615 JSFunction* numberProtoToStringFunction() const { return m_numberProtoToStringFunction.get(); }
616 JSFunction* newPromiseCapabilityFunction() const { return m_newPromiseCapabilityFunction.get(); }
617 JSFunction* functionProtoHasInstanceSymbolFunction() const { return m_functionProtoHasInstanceSymbolFunction.get(); }
618 JSObject* regExpProtoExecFunction() const { return m_regExpProtoExec.get(); }
619 JSObject* regExpProtoSymbolReplaceFunction() const { return m_regExpProtoSymbolReplace.get(); }
620 JSObject* regExpProtoGlobalGetter() const { return m_regExpProtoGlobalGetter.get(); }
621 JSObject* regExpProtoUnicodeGetter() const { return m_regExpProtoUnicodeGetter.get(); }
622 GetterSetter* throwTypeErrorArgumentsCalleeAndCallerGetterSetter()
623 {
624 return m_throwTypeErrorArgumentsCalleeAndCallerGetterSetter.get();
625 }
626
627 JSModuleLoader* moduleLoader() const { return m_moduleLoader.get(this); }
628
629 ObjectPrototype* objectPrototype() const { return m_objectPrototype.get(); }
630 FunctionPrototype* functionPrototype() const { return m_functionPrototype.get(); }
631 ArrayPrototype* arrayPrototype() const { return m_arrayPrototype.get(); }
632 JSObject* booleanPrototype() const { return m_booleanObjectStructure.prototypeInitializedOnMainThread(this); }
633 StringPrototype* stringPrototype() const { return m_stringPrototype.get(); }
634 JSObject* numberPrototype() const { return m_numberObjectStructure.prototypeInitializedOnMainThread(this); }
635 BigIntPrototype* bigIntPrototype() const { return m_bigIntPrototype.get(); }
636 JSObject* datePrototype() const { return m_dateStructure.prototype(this); }
637 JSObject* symbolPrototype() const { return m_symbolObjectStructure.prototypeInitializedOnMainThread(this); }
638 RegExpPrototype* regExpPrototype() const { return m_regExpPrototype.get(); }
639 JSObject* errorPrototype() const { return m_errorStructure.prototype(this); }
640 IteratorPrototype* iteratorPrototype() const { return m_iteratorPrototype.get(); }
641 AsyncIteratorPrototype* asyncIteratorPrototype() const { return m_asyncIteratorPrototype.get(); }
642 GeneratorFunctionPrototype* generatorFunctionPrototype() const { return m_generatorFunctionPrototype.get(); }
643 GeneratorPrototype* generatorPrototype() const { return m_generatorPrototype.get(); }
644 AsyncFunctionPrototype* asyncFunctionPrototype() const { return m_asyncFunctionPrototype.get(); }
645 MapPrototype* mapPrototype() const { return m_mapPrototype.get(); }
646 // Workaround for the name conflict between JSCell::setPrototype.
647 SetPrototype* jsSetPrototype() const { return m_setPrototype.get(); }
648 JSPromisePrototype* promisePrototype() const { return m_promisePrototype.get(); }
649 AsyncGeneratorPrototype* asyncGeneratorPrototype() const { return m_asyncGeneratorPrototype.get(); }
650 AsyncGeneratorFunctionPrototype* asyncGeneratorFunctionPrototype() const { return m_asyncGeneratorFunctionPrototype.get(); }
651
652 Structure* debuggerScopeStructure() const { return m_debuggerScopeStructure.get(this); }
653 Structure* withScopeStructure() const { return m_withScopeStructure.get(this); }
654 Structure* strictEvalActivationStructure() const { return m_strictEvalActivationStructure.get(this); }
655 Structure* activationStructure() const { return m_lexicalEnvironmentStructure.get(); }
656 Structure* moduleEnvironmentStructure() const { return m_moduleEnvironmentStructure.get(this); }
657 Structure* directArgumentsStructure() const { return m_directArgumentsStructure.get(); }
658 Structure* scopedArgumentsStructure() const { return m_scopedArgumentsStructure.get(); }
659 Structure* clonedArgumentsStructure() const { return m_clonedArgumentsStructure.get(); }
660 Structure* objectStructureForObjectConstructor() const { return m_objectStructureForObjectConstructor.get(); }
661 Structure* originalArrayStructureForIndexingType(IndexingType indexingType) const
662 {
663 ASSERT(indexingType & IsArray);
664 return m_originalArrayStructureForIndexingShape[arrayIndexFromIndexingType(indexingType)].get();
665 }
666 Structure* arrayStructureForIndexingTypeDuringAllocation(IndexingType indexingType) const
667 {
668 ASSERT(indexingType & IsArray);
669 return m_arrayStructureForIndexingShapeDuringAllocation[arrayIndexFromIndexingType(indexingType)].get();
670 }
671 Structure* arrayStructureForIndexingTypeDuringAllocation(ExecState* exec, IndexingType indexingType, JSValue newTarget) const
672 {
673 return InternalFunction::createSubclassStructure(exec, newTarget, arrayStructureForIndexingTypeDuringAllocation(indexingType));
674 }
675 Structure* arrayStructureForProfileDuringAllocation(ExecState* exec, ArrayAllocationProfile* profile, JSValue newTarget) const
676 {
677 return arrayStructureForIndexingTypeDuringAllocation(exec, ArrayAllocationProfile::selectIndexingTypeFor(profile), newTarget);
678 }
679
680 bool isOriginalArrayStructure(Structure* structure)
681 {
682 return originalArrayStructureForIndexingType(structure->indexingMode() | IsArray) == structure;
683 }
684
685 Structure* booleanObjectStructure() const { return m_booleanObjectStructure.get(this); }
686 Structure* callbackConstructorStructure() const { return m_callbackConstructorStructure.get(this); }
687 Structure* callbackFunctionStructure() const { return m_callbackFunctionStructure.get(this); }
688 Structure* callbackObjectStructure() const { return m_callbackObjectStructure.get(this); }
689#if JSC_OBJC_API_ENABLED
690 Structure* objcCallbackFunctionStructure() const { return m_objcCallbackFunctionStructure.get(this); }
691 Structure* objcWrapperObjectStructure() const { return m_objcWrapperObjectStructure.get(this); }
692#endif
693#ifdef JSC_GLIB_API_ENABLED
694 Structure* glibCallbackFunctionStructure() const { return m_glibCallbackFunctionStructure.get(this); }
695 Structure* glibWrapperObjectStructure() const { return m_glibWrapperObjectStructure.get(this); }
696#endif
697 Structure* dateStructure() const { return m_dateStructure.get(this); }
698 Structure* symbolObjectStructure() const { return m_symbolObjectStructure.get(this); }
699 Structure* nullPrototypeObjectStructure() const { return m_nullPrototypeObjectStructure.get(); }
700 Structure* errorStructure() const { return m_errorStructure.get(this); }
701 Structure* errorStructure(ErrorType errorType) const
702 {
703 switch (errorType) {
704 case ErrorType::Error:
705 return errorStructure();
706 case ErrorType::EvalError:
707 return m_evalErrorStructure.get(this);
708 case ErrorType::RangeError:
709 return m_rangeErrorStructure.get(this);
710 case ErrorType::ReferenceError:
711 return m_referenceErrorStructure.get(this);
712 case ErrorType::SyntaxError:
713 return m_syntaxErrorStructure.get(this);
714 case ErrorType::TypeError:
715 return m_typeErrorStructure.get(this);
716 case ErrorType::URIError:
717 return m_URIErrorStructure.get(this);
718 }
719 ASSERT_NOT_REACHED();
720 return nullptr;
721 }
722 Structure* calleeStructure() const { return m_calleeStructure.get(); }
723 Structure* hostFunctionStructure() const { return m_hostFunctionStructure.get(); }
724
725 Structure* arrowFunctionStructure(bool isBuiltin) const
726 {
727 if (isBuiltin)
728 return m_builtinFunctions.arrowFunctionStructure.get();
729 return m_ordinaryFunctions.arrowFunctionStructure.get();
730 }
731 Structure* sloppyFunctionStructure(bool isBuiltin) const
732 {
733 if (isBuiltin)
734 return m_builtinFunctions.sloppyFunctionStructure.get();
735 return m_ordinaryFunctions.sloppyFunctionStructure.get();
736 }
737 Structure* strictFunctionStructure(bool isBuiltin) const
738 {
739 if (isBuiltin)
740 return m_builtinFunctions.strictFunctionStructure.get();
741 return m_ordinaryFunctions.strictFunctionStructure.get();
742 }
743
744 Structure* boundFunctionStructure() const { return m_boundFunctionStructure.get(this); }
745 Structure* customGetterSetterFunctionStructure() const { return m_customGetterSetterFunctionStructure.get(this); }
746 Structure* getterSetterStructure() const { return m_getterSetterStructure.get(); }
747 Structure* nativeStdFunctionStructure() const { return m_nativeStdFunctionStructure.get(this); }
748 PropertyOffset functionNameOffset() const { return m_functionNameOffset; }
749 Structure* numberObjectStructure() const { return m_numberObjectStructure.get(this); }
750 Structure* mapStructure() const { return m_mapStructure.get(); }
751 Structure* regExpStructure() const { return m_regExpStructure.get(); }
752 Structure* generatorFunctionStructure() const { return m_generatorFunctionStructure.get(); }
753 Structure* asyncFunctionStructure() const { return m_asyncFunctionStructure.get(); }
754 Structure* asyncGeneratorFunctionStructure() const { return m_asyncGeneratorFunctionStructure.get(); }
755 Structure* stringObjectStructure() const { return m_stringObjectStructure.get(); }
756 Structure* bigIntObjectStructure() const { return m_bigIntObjectStructure.get(); }
757 Structure* iteratorResultObjectStructure() const { return m_iteratorResultObjectStructure.get(this); }
758 Structure* regExpMatchesArrayStructure() const { return m_regExpMatchesArrayStructure.get(); }
759 Structure* regExpMatchesArrayWithGroupsStructure() const { return m_regExpMatchesArrayWithGroupsStructure.get(); }
760 Structure* moduleRecordStructure() const { return m_moduleRecordStructure.get(this); }
761 Structure* moduleNamespaceObjectStructure() const { return m_moduleNamespaceObjectStructure.get(this); }
762 Structure* proxyObjectStructure() const { return m_proxyObjectStructure.get(this); }
763 Structure* callableProxyObjectStructure() const { return m_callableProxyObjectStructure.get(this); }
764 Structure* proxyRevokeStructure() const { return m_proxyRevokeStructure.get(this); }
765 Structure* restParameterStructure() const { return arrayStructureForIndexingTypeDuringAllocation(ArrayWithContiguous); }
766 Structure* originalRestParameterStructure() const { return originalArrayStructureForIndexingType(ArrayWithContiguous); }
767#if ENABLE(WEBASSEMBLY)
768 Structure* webAssemblyModuleRecordStructure() const { return m_webAssemblyModuleRecordStructure.get(this); }
769 Structure* webAssemblyFunctionStructure() const { return m_webAssemblyFunctionStructure.get(this); }
770 Structure* jsToWasmICCalleeStructure() const { return m_jsToWasmICCalleeStructure.get(this); }
771 Structure* webAssemblyWrapperFunctionStructure() const { return m_webAssemblyWrapperFunctionStructure.get(this); }
772 Structure* webAssemblyToJSCalleeStructure() const { return m_webAssemblyToJSCalleeStructure.get(this); }
773#endif // ENABLE(WEBASSEMBLY)
774#if ENABLE(INTL)
775 Structure* collatorStructure() { return m_collatorStructure.get(this); }
776 Structure* numberFormatStructure() { return m_numberFormatStructure.get(this); }
777 Structure* dateTimeFormatStructure() { return m_dateTimeFormatStructure.get(this); }
778 Structure* pluralRulesStructure() { return m_pluralRulesStructure.get(this); }
779#endif // ENABLE(INTL)
780
781 JS_EXPORT_PRIVATE void setRemoteDebuggingEnabled(bool);
782 JS_EXPORT_PRIVATE bool remoteDebuggingEnabled() const;
783
784 RegExpGlobalData& regExpGlobalData() { return m_regExpGlobalData; }
785 static ptrdiff_t regExpGlobalDataOffset() { return OBJECT_OFFSETOF(JSGlobalObject, m_regExpGlobalData); }
786
787#if ENABLE(REMOTE_INSPECTOR)
788 Inspector::JSGlobalObjectInspectorController& inspectorController() const { return *m_inspectorController.get(); }
789 JSGlobalObjectDebuggable& inspectorDebuggable() { return *m_inspectorDebuggable.get(); }
790#endif
791
792#if ENABLE(INTL)
793 const HashSet<String>& intlCollatorAvailableLocales();
794 const HashSet<String>& intlDateTimeFormatAvailableLocales();
795 const HashSet<String>& intlNumberFormatAvailableLocales();
796 const HashSet<String>& intlPluralRulesAvailableLocales();
797#endif // ENABLE(INTL)
798
799 void bumpGlobalLexicalBindingEpoch(VM&);
800 unsigned globalLexicalBindingEpoch() const { return m_globalLexicalBindingEpoch; }
801 static ptrdiff_t globalLexicalBindingEpochOffset() { return OBJECT_OFFSETOF(JSGlobalObject, m_globalLexicalBindingEpoch); }
802 unsigned* addressOfGlobalLexicalBindingEpoch() { return &m_globalLexicalBindingEpoch; }
803
804 void setConsoleClient(ConsoleClient* consoleClient) { m_consoleClient = consoleClient; }
805 ConsoleClient* consoleClient() const { return m_consoleClient; }
806
807 void setName(const String&);
808 const String& name() const { return m_name; }
809
810 JSObject* arrayBufferConstructor() const { return m_arrayBufferStructure.constructor(this); }
811
812 JSObject* arrayBufferPrototype(ArrayBufferSharingMode sharingMode) const
813 {
814 switch (sharingMode) {
815 case ArrayBufferSharingMode::Default:
816 return m_arrayBufferStructure.prototype(this);
817#if ENABLE(SHARED_ARRAY_BUFFER)
818 case ArrayBufferSharingMode::Shared:
819 return m_sharedArrayBufferPrototype.get();
820#else
821 default:
822 return m_arrayBufferStructure.prototype(this);
823#endif
824 }
825 }
826 Structure* arrayBufferStructure(ArrayBufferSharingMode sharingMode) const
827 {
828 switch (sharingMode) {
829 case ArrayBufferSharingMode::Default:
830 return m_arrayBufferStructure.get(this);
831#if ENABLE(SHARED_ARRAY_BUFFER)
832 case ArrayBufferSharingMode::Shared:
833 return m_sharedArrayBufferStructure.get();
834#else
835 default:
836 return m_arrayBufferStructure.get(this);
837#endif
838 }
839 RELEASE_ASSERT_NOT_REACHED();
840 return nullptr;
841 }
842
843#define DEFINE_ACCESSORS_FOR_SIMPLE_TYPE(capitalName, lowerName, properName, instanceType, jsName, prototypeBase) \
844 Structure* properName ## Structure() { return m_ ## properName ## Structure.get(); }
845
846 FOR_EACH_SIMPLE_BUILTIN_TYPE(DEFINE_ACCESSORS_FOR_SIMPLE_TYPE)
847 FOR_BIG_INT_BUILTIN_TYPE_WITH_CONSTRUCTOR(DEFINE_ACCESSORS_FOR_SIMPLE_TYPE)
848 FOR_EACH_BUILTIN_DERIVED_ITERATOR_TYPE(DEFINE_ACCESSORS_FOR_SIMPLE_TYPE)
849
850#undef DEFINE_ACCESSORS_FOR_SIMPLE_TYPE
851
852#define DEFINE_ACCESSORS_FOR_LAZY_TYPE(capitalName, lowerName, properName, instanceType, jsName, prototypeBase) \
853 Structure* properName ## Structure() { return m_ ## properName ## Structure.get(this); } \
854 JSObject* properName ## Constructor() { return m_ ## properName ## Structure.constructor(this); }
855
856 FOR_EACH_LAZY_BUILTIN_TYPE(DEFINE_ACCESSORS_FOR_LAZY_TYPE)
857 FOR_EACH_WEBASSEMBLY_CONSTRUCTOR_TYPE(DEFINE_ACCESSORS_FOR_LAZY_TYPE)
858
859#undef DEFINE_ACCESSORS_FOR_LAZY_TYPE
860
861 LazyClassStructure& lazyTypedArrayStructure(TypedArrayType type)
862 {
863 switch (type) {
864 case NotTypedArray:
865 RELEASE_ASSERT_NOT_REACHED();
866 return m_typedArrayInt8;
867#define TYPED_ARRAY_TYPE_CASE(name) case Type ## name: return m_typedArray ## name;
868 FOR_EACH_TYPED_ARRAY_TYPE(TYPED_ARRAY_TYPE_CASE)
869#undef TYPED_ARRAY_TYPE_CASE
870 }
871 RELEASE_ASSERT_NOT_REACHED();
872 return m_typedArrayInt8;
873 }
874 const LazyClassStructure& lazyTypedArrayStructure(TypedArrayType type) const
875 {
876 return const_cast<const LazyClassStructure&>(const_cast<JSGlobalObject*>(this)->lazyTypedArrayStructure(type));
877 }
878
879 Structure* typedArrayStructure(TypedArrayType type) const
880 {
881 return lazyTypedArrayStructure(type).get(this);
882 }
883 Structure* typedArrayStructureConcurrently(TypedArrayType type) const
884 {
885 return lazyTypedArrayStructure(type).getConcurrently();
886 }
887 bool isOriginalTypedArrayStructure(Structure* structure)
888 {
889 TypedArrayType type = structure->classInfo()->typedArrayStorageType;
890 if (type == NotTypedArray)
891 return false;
892 return typedArrayStructureConcurrently(type) == structure;
893 }
894
895 JSObject* typedArrayConstructor(TypedArrayType type) const
896 {
897 return lazyTypedArrayStructure(type).constructor(this);
898 }
899
900 JSCell* actualPointerFor(Special::Pointer pointer)
901 {
902 ASSERT(pointer < Special::TableSize);
903 return m_specialPointers[pointer];
904 }
905 JSCell* jsCellForLinkTimeConstant(LinkTimeConstant type)
906 {
907 unsigned index = static_cast<unsigned>(type);
908 ASSERT(index < LinkTimeConstantCount);
909 return m_linkTimeConstants[index];
910 }
911
912 WatchpointSet* masqueradesAsUndefinedWatchpoint() { return m_masqueradesAsUndefinedWatchpoint.get(); }
913 WatchpointSet* havingABadTimeWatchpoint() { return m_havingABadTimeWatchpoint.get(); }
914 WatchpointSet* varInjectionWatchpoint() { return m_varInjectionWatchpoint.get(); }
915
916 bool isHavingABadTime() const
917 {
918 return m_havingABadTimeWatchpoint->hasBeenInvalidated();
919 }
920
921 void haveABadTime(VM&);
922
923 bool objectPrototypeIsSane();
924 bool arrayPrototypeChainIsSane();
925 bool stringPrototypeChainIsSane();
926
927 void setProfileGroup(unsigned value) { createRareDataIfNeeded(); m_rareData->profileGroup = value; }
928 unsigned profileGroup() const
929 {
930 if (!m_rareData)
931 return 0;
932 return m_rareData->profileGroup;
933 }
934
935 Debugger* debugger() const { return m_debugger; }
936 void setDebugger(Debugger*);
937
938 const GlobalObjectMethodTable* globalObjectMethodTable() const { return m_globalObjectMethodTable; }
939
940 static bool supportsRichSourceInfo(const JSGlobalObject*) { return true; }
941
942 JS_EXPORT_PRIVATE ExecState* globalExec();
943
944 static bool shouldInterruptScript(const JSGlobalObject*) { return true; }
945 static bool shouldInterruptScriptBeforeTimeout(const JSGlobalObject*) { return false; }
946 static RuntimeFlags javaScriptRuntimeFlags(const JSGlobalObject*) { return RuntimeFlags(); }
947
948 JS_EXPORT_PRIVATE void queueMicrotask(Ref<Microtask>&&);
949
950 bool evalEnabled() const { return m_evalEnabled; }
951 bool webAssemblyEnabled() const { return m_webAssemblyEnabled; }
952 const String& evalDisabledErrorMessage() const { return m_evalDisabledErrorMessage; }
953 const String& webAssemblyDisabledErrorMessage() const { return m_webAssemblyDisabledErrorMessage; }
954 void setEvalEnabled(bool enabled, const String& errorMessage = String())
955 {
956 m_evalEnabled = enabled;
957 m_evalDisabledErrorMessage = errorMessage;
958 }
959 void setWebAssemblyEnabled(bool enabled, const String& errorMessage = String())
960 {
961 m_webAssemblyEnabled = enabled;
962 m_webAssemblyDisabledErrorMessage = errorMessage;
963 }
964
965#if !ASSERT_DISABLED
966 const ExecState* callFrameAtDebuggerEntry() const { return m_callFrameAtDebuggerEntry; }
967 void setCallFrameAtDebuggerEntry(const ExecState* callFrame) { m_callFrameAtDebuggerEntry = callFrame; }
968#endif
969
970 void resetPrototype(VM&, JSValue prototype);
971
972 VM& vm() const { return m_vm; }
973 JSObject* globalThis() const;
974 WriteBarrier<JSObject>* addressOfGlobalThis() { return &m_globalThis; }
975 OptionSet<CodeGenerationMode> defaultCodeGenerationMode() const;
976
977 static Structure* createStructure(VM& vm, JSValue prototype)
978 {
979 Structure* result = Structure::create(vm, 0, prototype, TypeInfo(GlobalObjectType, StructureFlags), info());
980 result->setTransitionWatchpointIsLikelyToBeFired(true);
981 return result;
982 }
983
984 void registerWeakMap(OpaqueJSWeakObjectMap* map)
985 {
986 createRareDataIfNeeded();
987 m_rareData->weakMaps.add(map);
988 }
989
990 void unregisterWeakMap(OpaqueJSWeakObjectMap* map)
991 {
992 if (m_rareData)
993 m_rareData->weakMaps.remove(map);
994 }
995
996 OpaqueJSClassDataMap& opaqueJSClassData()
997 {
998 createRareDataIfNeeded();
999 return m_rareData->opaqueJSClassData;
1000 }
1001
1002 static ptrdiff_t weakRandomOffset() { return OBJECT_OFFSETOF(JSGlobalObject, m_weakRandom); }
1003 double weakRandomNumber() { return m_weakRandom.get(); }
1004 unsigned weakRandomInteger() { return m_weakRandom.getUint32(); }
1005 WeakRandom& weakRandom() { return m_weakRandom; }
1006
1007 bool needsSiteSpecificQuirks() const { return m_needsSiteSpecificQuirks; }
1008 JS_EXPORT_PRIVATE void exposeDollarVM(VM&);
1009
1010#if JSC_OBJC_API_ENABLED
1011 JSWrapperMap* wrapperMap() const { return m_wrapperMap.get(); }
1012 void setWrapperMap(JSWrapperMap* map) { m_wrapperMap = map; }
1013 void setAPIWrapper(void* apiWrapper) { m_apiWrapper = apiWrapper; }
1014 void* apiWrapper() const { return m_apiWrapper; }
1015#endif
1016#ifdef JSC_GLIB_API_ENABLED
1017 WrapperMap* wrapperMap() const { return m_wrapperMap.get(); }
1018 void setWrapperMap(std::unique_ptr<WrapperMap>&&);
1019#endif
1020
1021 void tryInstallArraySpeciesWatchpoint(ExecState*);
1022
1023protected:
1024 struct GlobalPropertyInfo {
1025 GlobalPropertyInfo(const Identifier& i, JSValue v, unsigned a)
1026 : identifier(i)
1027 , value(v)
1028 , attributes(a)
1029 {
1030 }
1031
1032 const Identifier identifier;
1033 JSValue value;
1034 unsigned attributes;
1035 };
1036 JS_EXPORT_PRIVATE void addStaticGlobals(GlobalPropertyInfo*, int count);
1037
1038 void setNeedsSiteSpecificQuirks(bool needQuirks) { m_needsSiteSpecificQuirks = needQuirks; }
1039
1040private:
1041 friend class LLIntOffsetsExtractor;
1042
1043 void fireWatchpointAndMakeAllArrayStructuresSlowPut(VM&);
1044 void setGlobalThis(VM&, JSObject* globalThis);
1045
1046 template<ErrorType errorType>
1047 void initializeErrorConstructor(LazyClassStructure::Initializer&);
1048
1049 JS_EXPORT_PRIVATE void init(VM&);
1050 void fixupPrototypeChainWithObjectPrototype(VM&);
1051
1052 JS_EXPORT_PRIVATE static void clearRareData(JSCell*);
1053
1054 bool m_needsSiteSpecificQuirks { false };
1055#if JSC_OBJC_API_ENABLED
1056 RetainPtr<JSWrapperMap> m_wrapperMap;
1057 void* m_apiWrapper { nullptr };
1058#endif
1059#ifdef JSC_GLIB_API_ENABLED
1060 std::unique_ptr<WrapperMap> m_wrapperMap;
1061#endif
1062};
1063
1064inline JSArray* constructEmptyArray(ExecState* exec, ArrayAllocationProfile* profile, JSGlobalObject* globalObject, unsigned initialLength = 0, JSValue newTarget = JSValue())
1065{
1066 VM& vm = globalObject->vm();
1067 auto scope = DECLARE_THROW_SCOPE(vm);
1068 Structure* structure;
1069 if (initialLength >= MIN_ARRAY_STORAGE_CONSTRUCTION_LENGTH)
1070 structure = globalObject->arrayStructureForIndexingTypeDuringAllocation(exec, ArrayWithArrayStorage, newTarget);
1071 else
1072 structure = globalObject->arrayStructureForProfileDuringAllocation(exec, profile, newTarget);
1073 RETURN_IF_EXCEPTION(scope, nullptr);
1074
1075 JSArray* result = JSArray::tryCreate(vm, structure, initialLength);
1076 if (UNLIKELY(!result)) {
1077 throwOutOfMemoryError(exec, scope);
1078 return nullptr;
1079 }
1080 return ArrayAllocationProfile::updateLastAllocationFor(profile, result);
1081}
1082
1083inline JSArray* constructEmptyArray(ExecState* exec, ArrayAllocationProfile* profile, unsigned initialLength = 0, JSValue newTarget = JSValue())
1084{
1085 return constructEmptyArray(exec, profile, exec->lexicalGlobalObject(), initialLength, newTarget);
1086}
1087
1088inline JSArray* constructArray(ExecState* exec, ArrayAllocationProfile* profile, JSGlobalObject* globalObject, const ArgList& values, JSValue newTarget = JSValue())
1089{
1090 VM& vm = globalObject->vm();
1091 auto scope = DECLARE_THROW_SCOPE(vm);
1092 Structure* structure = globalObject->arrayStructureForProfileDuringAllocation(exec, profile, newTarget);
1093 RETURN_IF_EXCEPTION(scope, nullptr);
1094 return ArrayAllocationProfile::updateLastAllocationFor(profile, constructArray(exec, structure, values));
1095}
1096
1097inline JSArray* constructArray(ExecState* exec, ArrayAllocationProfile* profile, const ArgList& values, JSValue newTarget = JSValue())
1098{
1099 return constructArray(exec, profile, exec->lexicalGlobalObject(), values, newTarget);
1100}
1101
1102inline JSArray* constructArray(ExecState* exec, ArrayAllocationProfile* profile, JSGlobalObject* globalObject, const JSValue* values, unsigned length, JSValue newTarget = JSValue())
1103{
1104 VM& vm = globalObject->vm();
1105 auto scope = DECLARE_THROW_SCOPE(vm);
1106 Structure* structure = globalObject->arrayStructureForProfileDuringAllocation(exec, profile, newTarget);
1107 RETURN_IF_EXCEPTION(scope, nullptr);
1108 return ArrayAllocationProfile::updateLastAllocationFor(profile, constructArray(exec, structure, values, length));
1109}
1110
1111inline JSArray* constructArray(ExecState* exec, ArrayAllocationProfile* profile, const JSValue* values, unsigned length, JSValue newTarget = JSValue())
1112{
1113 return constructArray(exec, profile, exec->lexicalGlobalObject(), values, length, newTarget);
1114}
1115
1116inline JSArray* constructArrayNegativeIndexed(ExecState* exec, ArrayAllocationProfile* profile, JSGlobalObject* globalObject, const JSValue* values, unsigned length, JSValue newTarget = JSValue())
1117{
1118 VM& vm = globalObject->vm();
1119 auto scope = DECLARE_THROW_SCOPE(vm);
1120 Structure* structure = globalObject->arrayStructureForProfileDuringAllocation(exec, profile, newTarget);
1121 RETURN_IF_EXCEPTION(scope, nullptr);
1122 return ArrayAllocationProfile::updateLastAllocationFor(profile, constructArrayNegativeIndexed(exec, structure, values, length));
1123}
1124
1125inline JSArray* constructArrayNegativeIndexed(ExecState* exec, ArrayAllocationProfile* profile, const JSValue* values, unsigned length, JSValue newTarget = JSValue())
1126{
1127 return constructArrayNegativeIndexed(exec, profile, exec->lexicalGlobalObject(), values, length, newTarget);
1128}
1129
1130inline JSObject* ExecState::globalThisValue() const
1131{
1132 return lexicalGlobalObject()->globalThis();
1133}
1134
1135inline JSObject* JSScope::globalThis()
1136{
1137 return globalObject()->globalThis();
1138}
1139
1140inline JSObject* JSGlobalObject::globalThis() const
1141{
1142 return m_globalThis.get();
1143}
1144
1145inline OptionSet<CodeGenerationMode> JSGlobalObject::defaultCodeGenerationMode() const
1146{
1147 OptionSet<CodeGenerationMode> codeGenerationMode;
1148 if (hasInteractiveDebugger() || Options::forceDebuggerBytecodeGeneration())
1149 codeGenerationMode.add(CodeGenerationMode::Debugger);
1150 if (m_vm.typeProfiler())
1151 codeGenerationMode.add(CodeGenerationMode::TypeProfiler);
1152 if (m_vm.controlFlowProfiler())
1153 codeGenerationMode.add(CodeGenerationMode::ControlFlowProfiler);
1154 return codeGenerationMode;
1155}
1156
1157} // namespace JSC
1158