2 * Copyright (C) 2007, 2008, 2009 Apple Inc. All rights reserved.
3 * Copyright (C) 2008 Cameron Zwarich (cwzwarich@uwaterloo.ca)
5 * Redistribution and use in source and binary forms, with or without
6 * modification, are permitted provided that the following conditions
9 * 1. Redistributions of source code must retain the above copyright
10 * notice, this list of conditions and the following disclaimer.
11 * 2. Redistributions in binary form must reproduce the above copyright
12 * notice, this list of conditions and the following disclaimer in the
13 * documentation and/or other materials provided with the distribution.
14 * 3. Neither the name of Apple Computer, Inc. ("Apple") nor the names of
15 * its contributors may be used to endorse or promote products derived
16 * from this software without specific prior written permission.
18 * THIS SOFTWARE IS PROVIDED BY APPLE AND ITS CONTRIBUTORS "AS IS" AND ANY
19 * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
20 * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
21 * DISCLAIMED. IN NO EVENT SHALL APPLE OR ITS CONTRIBUTORS BE LIABLE FOR ANY
22 * DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
23 * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
24 * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
25 * ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
26 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
27 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
31 #include "JSGlobalObject.h"
33 #include "JSCallbackConstructor.h"
34 #include "JSCallbackFunction.h"
35 #include "JSCallbackObject.h"
37 #include "Arguments.h"
38 #include "ArrayConstructor.h"
39 #include "ArrayPrototype.h"
40 #include "BooleanConstructor.h"
41 #include "BooleanPrototype.h"
42 #include "CodeBlock.h"
43 #include "DateConstructor.h"
44 #include "DatePrototype.h"
45 #include "ErrorConstructor.h"
46 #include "ErrorPrototype.h"
47 #include "FunctionConstructor.h"
48 #include "FunctionPrototype.h"
49 #include "JSFunction.h"
50 #include "JSGlobalObjectFunctions.h"
52 #include "JSONObject.h"
53 #include "Interpreter.h"
55 #include "MathObject.h"
56 #include "NativeErrorConstructor.h"
57 #include "NativeErrorPrototype.h"
58 #include "NumberConstructor.h"
59 #include "NumberPrototype.h"
60 #include "ObjectConstructor.h"
61 #include "ObjectPrototype.h"
63 #include "RegExpConstructor.h"
64 #include "RegExpMatchesArray.h"
65 #include "RegExpObject.h"
66 #include "RegExpPrototype.h"
67 #include "ScopeChainMark.h"
68 #include "StringConstructor.h"
69 #include "StringPrototype.h"
72 #include "JSGlobalObject.lut.h"
76 const ClassInfo JSGlobalObject::s_info = { "GlobalObject", &JSVariableObject::s_info, 0, ExecState::globalObjectTable };
78 /* Source for JSGlobalObject.lut.h
79 @begin globalObjectTable
80 parseInt globalFuncParseInt DontEnum|Function 2
81 parseFloat globalFuncParseFloat DontEnum|Function 1
82 isNaN globalFuncIsNaN DontEnum|Function 1
83 isFinite globalFuncIsFinite DontEnum|Function 1
84 escape globalFuncEscape DontEnum|Function 1
85 unescape globalFuncUnescape DontEnum|Function 1
86 decodeURI globalFuncDecodeURI DontEnum|Function 1
87 decodeURIComponent globalFuncDecodeURIComponent DontEnum|Function 1
88 encodeURI globalFuncEncodeURI DontEnum|Function 1
89 encodeURIComponent globalFuncEncodeURIComponent DontEnum|Function 1
93 ASSERT_CLASS_FITS_IN_CELL(JSGlobalObject);
95 // Default number of ticks before a timeout check should be done.
96 static const int initialTickCountThreshold = 255;
98 // Preferred number of milliseconds between each timeout check
99 static const int preferredScriptCheckTimeInterval = 1000;
101 template <typename T> static inline void visitIfNeeded(SlotVisitor& visitor, WriteBarrier<T>* v)
107 JSGlobalObject::~JSGlobalObject()
109 ASSERT(JSLock::currentThreadIsHoldingLock());
112 m_debugger->detach(this);
114 Profiler** profiler = Profiler::enabledProfilerReference();
115 if (UNLIKELY(*profiler != 0)) {
116 (*profiler)->stopProfiling(this);
120 void JSGlobalObject::init(JSObject* thisValue)
122 ASSERT(JSLock::currentThreadIsHoldingLock());
124 structure()->disableSpecificFunctionTracking();
126 m_globalData = Heap::heap(this)->globalData();
127 m_globalScopeChain.set(*m_globalData, this, ScopeChainNode::create(0, this, m_globalData.get(), this, thisValue));
129 JSGlobalObject::globalExec()->init(0, 0, m_globalScopeChain.get(), CallFrame::noCaller(), 0, 0);
136 void JSGlobalObject::put(ExecState* exec, const Identifier& propertyName, JSValue value, PutPropertySlot& slot)
138 ASSERT(!Heap::heap(value) || Heap::heap(value) == Heap::heap(this));
140 if (symbolTablePut(exec->globalData(), propertyName, value))
142 JSVariableObject::put(exec, propertyName, value, slot);
145 void JSGlobalObject::putWithAttributes(ExecState* exec, const Identifier& propertyName, JSValue value, unsigned attributes)
147 ASSERT(!Heap::heap(value) || Heap::heap(value) == Heap::heap(this));
149 if (symbolTablePutWithAttributes(exec->globalData(), propertyName, value, attributes))
152 JSValue valueBefore = getDirect(exec->globalData(), propertyName);
153 PutPropertySlot slot;
154 JSVariableObject::put(exec, propertyName, value, slot);
156 JSValue valueAfter = getDirect(exec->globalData(), propertyName);
158 JSObject::putWithAttributes(exec, propertyName, valueAfter, attributes);
162 void JSGlobalObject::defineGetter(ExecState* exec, const Identifier& propertyName, JSObject* getterFunc, unsigned attributes)
165 if (!symbolTableGet(propertyName, slot))
166 JSVariableObject::defineGetter(exec, propertyName, getterFunc, attributes);
169 void JSGlobalObject::defineSetter(ExecState* exec, const Identifier& propertyName, JSObject* setterFunc, unsigned attributes)
172 if (!symbolTableGet(propertyName, slot))
173 JSVariableObject::defineSetter(exec, propertyName, setterFunc, attributes);
176 static inline JSObject* lastInPrototypeChain(JSObject* object)
178 JSObject* o = object;
179 while (o->prototype().isObject())
180 o = asObject(o->prototype());
184 void JSGlobalObject::reset(JSValue prototype)
186 ExecState* exec = JSGlobalObject::globalExec();
188 m_functionPrototype.set(exec->globalData(), this, FunctionPrototype::create(exec, this, FunctionPrototype::createStructure(exec->globalData(), this, jsNull()))); // The real prototype will be set once ObjectPrototype is created.
189 m_functionStructure.set(exec->globalData(), this, JSFunction::createStructure(exec->globalData(), this, m_functionPrototype.get()));
190 m_namedFunctionStructure.set(exec->globalData(), this, Structure::addPropertyTransition(exec->globalData(), m_functionStructure.get(), exec->globalData().propertyNames->name, DontDelete | ReadOnly | DontEnum, 0, m_functionNameOffset));
191 m_internalFunctionStructure.set(exec->globalData(), this, InternalFunction::createStructure(exec->globalData(), this, m_functionPrototype.get()));
192 JSFunction* callFunction = 0;
193 JSFunction* applyFunction = 0;
194 m_functionPrototype->addFunctionProperties(exec, this, m_functionStructure.get(), &callFunction, &applyFunction);
195 m_callFunction.set(exec->globalData(), this, callFunction);
196 m_applyFunction.set(exec->globalData(), this, applyFunction);
197 m_objectPrototype.set(exec->globalData(), this, ObjectPrototype::create(exec, this, ObjectPrototype::createStructure(exec->globalData(), this, jsNull())));
198 m_functionPrototype->structure()->setPrototypeWithoutTransition(exec->globalData(), m_objectPrototype.get());
200 m_emptyObjectStructure.set(exec->globalData(), this, m_objectPrototype->inheritorID(exec->globalData()));
201 m_nullPrototypeObjectStructure.set(exec->globalData(), this, createEmptyObjectStructure(exec->globalData(), this, jsNull()));
203 m_callbackFunctionStructure.set(exec->globalData(), this, JSCallbackFunction::createStructure(exec->globalData(), this, m_functionPrototype.get()));
204 m_argumentsStructure.set(exec->globalData(), this, Arguments::createStructure(exec->globalData(), this, m_objectPrototype.get()));
205 m_callbackConstructorStructure.set(exec->globalData(), this, JSCallbackConstructor::createStructure(exec->globalData(), this, m_objectPrototype.get()));
206 m_callbackObjectStructure.set(exec->globalData(), this, JSCallbackObject<JSNonFinalObject>::createStructure(exec->globalData(), this, m_objectPrototype.get()));
208 m_arrayPrototype.set(exec->globalData(), this, ArrayPrototype::create(exec, this, ArrayPrototype::createStructure(exec->globalData(), this, m_objectPrototype.get())));
209 m_arrayStructure.set(exec->globalData(), this, JSArray::createStructure(exec->globalData(), this, m_arrayPrototype.get()));
210 m_regExpMatchesArrayStructure.set(exec->globalData(), this, RegExpMatchesArray::createStructure(exec->globalData(), this, m_arrayPrototype.get()));
212 m_stringPrototype.set(exec->globalData(), this, StringPrototype::create(exec, this, StringPrototype::createStructure(exec->globalData(), this, m_objectPrototype.get())));
213 m_stringObjectStructure.set(exec->globalData(), this, StringObject::createStructure(exec->globalData(), this, m_stringPrototype.get()));
215 m_booleanPrototype.set(exec->globalData(), this, BooleanPrototype::create(exec, this, BooleanPrototype::createStructure(exec->globalData(), this, m_objectPrototype.get())));
216 m_booleanObjectStructure.set(exec->globalData(), this, BooleanObject::createStructure(exec->globalData(), this, m_booleanPrototype.get()));
218 m_numberPrototype.set(exec->globalData(), this, NumberPrototype::create(exec, this, NumberPrototype::createStructure(exec->globalData(), this, m_objectPrototype.get())));
219 m_numberObjectStructure.set(exec->globalData(), this, NumberObject::createStructure(exec->globalData(), this, m_numberPrototype.get()));
221 m_datePrototype.set(exec->globalData(), this, DatePrototype::create(exec, this, DatePrototype::createStructure(exec->globalData(), this, m_objectPrototype.get())));
222 m_dateStructure.set(exec->globalData(), this, DateInstance::createStructure(exec->globalData(), this, m_datePrototype.get()));
224 RegExp* emptyRegex = RegExp::create(exec->globalData(), "", NoFlags);
226 m_regExpPrototype.set(exec->globalData(), this, RegExpPrototype::create(exec, this, RegExpPrototype::createStructure(exec->globalData(), this, m_objectPrototype.get()), emptyRegex));
227 m_regExpStructure.set(exec->globalData(), this, RegExpObject::createStructure(exec->globalData(), this, m_regExpPrototype.get()));
229 m_methodCallDummy.set(exec->globalData(), this, constructEmptyObject(exec));
231 ErrorPrototype* errorPrototype = ErrorPrototype::create(exec, this, ErrorPrototype::createStructure(exec->globalData(), this, m_objectPrototype.get()));
232 m_errorStructure.set(exec->globalData(), this, ErrorInstance::createStructure(exec->globalData(), this, errorPrototype));
236 JSCell* objectConstructor = ObjectConstructor::create(exec, this, ObjectConstructor::createStructure(exec->globalData(), this, m_functionPrototype.get()), m_objectPrototype.get());
237 JSCell* functionConstructor = FunctionConstructor::create(exec, this, FunctionConstructor::createStructure(exec->globalData(), this, m_functionPrototype.get()), m_functionPrototype.get());
238 JSCell* arrayConstructor = ArrayConstructor::create(exec, this, ArrayConstructor::createStructure(exec->globalData(), this, m_functionPrototype.get()), m_arrayPrototype.get());
239 JSCell* stringConstructor = StringConstructor::create(exec, this, StringConstructor::createStructure(exec->globalData(), this, m_functionPrototype.get()), m_stringPrototype.get());
240 JSCell* booleanConstructor = BooleanConstructor::create(exec, this, BooleanConstructor::createStructure(exec->globalData(), this, m_functionPrototype.get()), m_booleanPrototype.get());
241 JSCell* numberConstructor = NumberConstructor::create(exec, this, NumberConstructor::createStructure(exec->globalData(), this, m_functionPrototype.get()), m_numberPrototype.get());
242 JSCell* dateConstructor = DateConstructor::create(exec, this, DateConstructor::createStructure(exec->globalData(), this, m_functionPrototype.get()), m_datePrototype.get());
244 m_regExpConstructor.set(exec->globalData(), this, RegExpConstructor::create(exec, this, RegExpConstructor::createStructure(exec->globalData(), this, m_functionPrototype.get()), m_regExpPrototype.get()));
246 m_errorConstructor.set(exec->globalData(), this, ErrorConstructor::create(exec, this, ErrorConstructor::createStructure(exec->globalData(), this, m_functionPrototype.get()), errorPrototype));
248 Structure* nativeErrorPrototypeStructure = NativeErrorPrototype::createStructure(exec->globalData(), this, errorPrototype);
249 Structure* nativeErrorStructure = NativeErrorConstructor::createStructure(exec->globalData(), this, m_functionPrototype.get());
250 m_evalErrorConstructor.set(exec->globalData(), this, NativeErrorConstructor::create(exec, this, nativeErrorStructure, nativeErrorPrototypeStructure, "EvalError"));
251 m_rangeErrorConstructor.set(exec->globalData(), this, NativeErrorConstructor::create(exec, this, nativeErrorStructure, nativeErrorPrototypeStructure, "RangeError"));
252 m_referenceErrorConstructor.set(exec->globalData(), this, NativeErrorConstructor::create(exec, this, nativeErrorStructure, nativeErrorPrototypeStructure, "ReferenceError"));
253 m_syntaxErrorConstructor.set(exec->globalData(), this, NativeErrorConstructor::create(exec, this, nativeErrorStructure, nativeErrorPrototypeStructure, "SyntaxError"));
254 m_typeErrorConstructor.set(exec->globalData(), this, NativeErrorConstructor::create(exec, this, nativeErrorStructure, nativeErrorPrototypeStructure, "TypeError"));
255 m_URIErrorConstructor.set(exec->globalData(), this, NativeErrorConstructor::create(exec, this, nativeErrorStructure, nativeErrorPrototypeStructure, "URIError"));
257 m_objectPrototype->putDirectFunctionWithoutTransition(exec->globalData(), exec->propertyNames().constructor, objectConstructor, DontEnum);
258 m_functionPrototype->putDirectFunctionWithoutTransition(exec->globalData(), exec->propertyNames().constructor, functionConstructor, DontEnum);
259 m_arrayPrototype->putDirectFunctionWithoutTransition(exec->globalData(), exec->propertyNames().constructor, arrayConstructor, DontEnum);
260 m_booleanPrototype->putDirectFunctionWithoutTransition(exec->globalData(), exec->propertyNames().constructor, booleanConstructor, DontEnum);
261 m_stringPrototype->putDirectFunctionWithoutTransition(exec->globalData(), exec->propertyNames().constructor, stringConstructor, DontEnum);
262 m_numberPrototype->putDirectFunctionWithoutTransition(exec->globalData(), exec->propertyNames().constructor, numberConstructor, DontEnum);
263 m_datePrototype->putDirectFunctionWithoutTransition(exec->globalData(), exec->propertyNames().constructor, dateConstructor, DontEnum);
264 m_regExpPrototype->putDirectFunctionWithoutTransition(exec->globalData(), exec->propertyNames().constructor, m_regExpConstructor.get(), DontEnum);
265 errorPrototype->putDirectFunctionWithoutTransition(exec->globalData(), exec->propertyNames().constructor, m_errorConstructor.get(), DontEnum);
267 putDirectFunctionWithoutTransition(exec->globalData(), Identifier(exec, "Object"), objectConstructor, DontEnum);
268 putDirectFunctionWithoutTransition(exec->globalData(), Identifier(exec, "Function"), functionConstructor, DontEnum);
269 putDirectFunctionWithoutTransition(exec->globalData(), Identifier(exec, "Array"), arrayConstructor, DontEnum);
270 putDirectFunctionWithoutTransition(exec->globalData(), Identifier(exec, "Boolean"), booleanConstructor, DontEnum);
271 putDirectFunctionWithoutTransition(exec->globalData(), Identifier(exec, "String"), stringConstructor, DontEnum);
272 putDirectFunctionWithoutTransition(exec->globalData(), Identifier(exec, "Number"), numberConstructor, DontEnum);
273 putDirectFunctionWithoutTransition(exec->globalData(), Identifier(exec, "Date"), dateConstructor, DontEnum);
274 putDirectFunctionWithoutTransition(exec->globalData(), Identifier(exec, "RegExp"), m_regExpConstructor.get(), DontEnum);
275 putDirectFunctionWithoutTransition(exec->globalData(), Identifier(exec, "Error"), m_errorConstructor.get(), DontEnum);
276 putDirectFunctionWithoutTransition(exec->globalData(), Identifier(exec, "EvalError"), m_evalErrorConstructor.get(), DontEnum);
277 putDirectFunctionWithoutTransition(exec->globalData(), Identifier(exec, "RangeError"), m_rangeErrorConstructor.get(), DontEnum);
278 putDirectFunctionWithoutTransition(exec->globalData(), Identifier(exec, "ReferenceError"), m_referenceErrorConstructor.get(), DontEnum);
279 putDirectFunctionWithoutTransition(exec->globalData(), Identifier(exec, "SyntaxError"), m_syntaxErrorConstructor.get(), DontEnum);
280 putDirectFunctionWithoutTransition(exec->globalData(), Identifier(exec, "TypeError"), m_typeErrorConstructor.get(), DontEnum);
281 putDirectFunctionWithoutTransition(exec->globalData(), Identifier(exec, "URIError"), m_URIErrorConstructor.get(), DontEnum);
283 m_evalFunction.set(exec->globalData(), this, JSFunction::create(exec, this, m_functionStructure.get(), 1, exec->propertyNames().eval, globalFuncEval));
284 putDirectFunctionWithoutTransition(exec, m_evalFunction.get(), DontEnum);
286 GlobalPropertyInfo staticGlobals[] = {
287 GlobalPropertyInfo(Identifier(exec, "Math"), MathObject::create(exec, this, MathObject::createStructure(exec->globalData(), this, m_objectPrototype.get())), DontEnum | DontDelete),
288 GlobalPropertyInfo(Identifier(exec, "NaN"), jsNaN(), DontEnum | DontDelete | ReadOnly),
289 GlobalPropertyInfo(Identifier(exec, "Infinity"), jsNumber(std::numeric_limits<double>::infinity()), DontEnum | DontDelete | ReadOnly),
290 GlobalPropertyInfo(Identifier(exec, "undefined"), jsUndefined(), DontEnum | DontDelete | ReadOnly),
291 GlobalPropertyInfo(Identifier(exec, "JSON"), JSONObject::create(exec, this, JSONObject::createStructure(exec->globalData(), this, m_objectPrototype.get())), DontEnum | DontDelete)
293 addStaticGlobals(staticGlobals, WTF_ARRAY_LENGTH(staticGlobals));
295 resetPrototype(exec->globalData(), prototype);
298 // Set prototype, and also insert the object prototype at the end of the chain.
299 void JSGlobalObject::resetPrototype(JSGlobalData& globalData, JSValue prototype)
301 setPrototype(globalData, prototype);
303 JSObject* oldLastInPrototypeChain = lastInPrototypeChain(this);
304 JSObject* objectPrototype = m_objectPrototype.get();
305 if (oldLastInPrototypeChain != objectPrototype)
306 oldLastInPrototypeChain->setPrototype(globalData, objectPrototype);
309 void JSGlobalObject::visitChildren(SlotVisitor& visitor)
311 ASSERT_GC_OBJECT_INHERITS(this, &s_info);
312 COMPILE_ASSERT(StructureFlags & OverridesVisitChildren, OverridesVisitChildrenWithoutSettingFlag);
313 ASSERT(structure()->typeInfo().overridesVisitChildren());
314 JSVariableObject::visitChildren(visitor);
316 visitIfNeeded(visitor, &m_globalScopeChain);
317 visitIfNeeded(visitor, &m_methodCallDummy);
319 visitIfNeeded(visitor, &m_regExpConstructor);
320 visitIfNeeded(visitor, &m_errorConstructor);
321 visitIfNeeded(visitor, &m_evalErrorConstructor);
322 visitIfNeeded(visitor, &m_rangeErrorConstructor);
323 visitIfNeeded(visitor, &m_referenceErrorConstructor);
324 visitIfNeeded(visitor, &m_syntaxErrorConstructor);
325 visitIfNeeded(visitor, &m_typeErrorConstructor);
326 visitIfNeeded(visitor, &m_URIErrorConstructor);
328 visitIfNeeded(visitor, &m_evalFunction);
329 visitIfNeeded(visitor, &m_callFunction);
330 visitIfNeeded(visitor, &m_applyFunction);
332 visitIfNeeded(visitor, &m_objectPrototype);
333 visitIfNeeded(visitor, &m_functionPrototype);
334 visitIfNeeded(visitor, &m_arrayPrototype);
335 visitIfNeeded(visitor, &m_booleanPrototype);
336 visitIfNeeded(visitor, &m_stringPrototype);
337 visitIfNeeded(visitor, &m_numberPrototype);
338 visitIfNeeded(visitor, &m_datePrototype);
339 visitIfNeeded(visitor, &m_regExpPrototype);
341 visitIfNeeded(visitor, &m_argumentsStructure);
342 visitIfNeeded(visitor, &m_arrayStructure);
343 visitIfNeeded(visitor, &m_booleanObjectStructure);
344 visitIfNeeded(visitor, &m_callbackConstructorStructure);
345 visitIfNeeded(visitor, &m_callbackFunctionStructure);
346 visitIfNeeded(visitor, &m_callbackObjectStructure);
347 visitIfNeeded(visitor, &m_dateStructure);
348 visitIfNeeded(visitor, &m_emptyObjectStructure);
349 visitIfNeeded(visitor, &m_nullPrototypeObjectStructure);
350 visitIfNeeded(visitor, &m_errorStructure);
351 visitIfNeeded(visitor, &m_functionStructure);
352 visitIfNeeded(visitor, &m_namedFunctionStructure);
353 visitIfNeeded(visitor, &m_numberObjectStructure);
354 visitIfNeeded(visitor, &m_regExpMatchesArrayStructure);
355 visitIfNeeded(visitor, &m_regExpStructure);
356 visitIfNeeded(visitor, &m_stringObjectStructure);
357 visitIfNeeded(visitor, &m_internalFunctionStructure);
359 if (m_registerArray) {
360 // Outside the execution of global code, when our variables are torn off,
361 // we can mark the torn-off array.
362 visitor.appendValues(m_registerArray.get(), m_registerArraySize);
363 } else if (m_registers) {
364 // During execution of global code, when our variables are in the register file,
365 // the symbol table tells us how many variables there are, and registers
366 // points to where they end, and the registers used for execution begin.
367 visitor.appendValues(m_registers - symbolTable().size(), symbolTable().size());
371 ExecState* JSGlobalObject::globalExec()
373 return CallFrame::create(m_globalCallFrame + RegisterFile::CallFrameHeaderSize);
376 bool JSGlobalObject::isDynamicScope(bool&) const
381 void JSGlobalObject::resizeRegisters(size_t newSize)
383 // Previous duplicate symbols may have created spare capacity in m_registerArray.
384 if (newSize <= m_registerArraySize)
387 size_t oldSize = m_registerArraySize;
388 OwnArrayPtr<WriteBarrier<Unknown> > registerArray = adoptArrayPtr(new WriteBarrier<Unknown>[newSize]);
389 for (size_t i = 0; i < oldSize; ++i)
390 registerArray[i].set(globalData(), this, m_registerArray[i].get());
391 for (size_t i = oldSize; i < newSize; ++i)
392 registerArray[i].setUndefined();
394 WriteBarrier<Unknown>* registers = registerArray.get();
395 setRegisters(registers, registerArray.release(), newSize);
398 void JSGlobalObject::addStaticGlobals(GlobalPropertyInfo* globals, int count)
400 resizeRegisters(symbolTable().size() + count);
402 for (int i = 0; i < count; ++i) {
403 GlobalPropertyInfo& global = globals[i];
404 ASSERT(global.attributes & DontDelete);
406 int index = symbolTable().size();
407 SymbolTableEntry newEntry(index, global.attributes);
408 symbolTable().add(global.identifier.impl(), newEntry);
409 registerAt(index).set(globalData(), this, global.value);
413 bool JSGlobalObject::getOwnPropertySlot(ExecState* exec, const Identifier& propertyName, PropertySlot& slot)
415 if (getStaticFunctionSlot<JSVariableObject>(exec, ExecState::globalObjectTable(exec), this, propertyName, slot))
417 return symbolTableGet(propertyName, slot);
420 bool JSGlobalObject::getOwnPropertyDescriptor(ExecState* exec, const Identifier& propertyName, PropertyDescriptor& descriptor)
422 if (getStaticFunctionDescriptor<JSVariableObject>(exec, ExecState::globalObjectTable(exec), this, propertyName, descriptor))
424 return symbolTableGet(propertyName, descriptor);
427 void JSGlobalObject::WeakMapsFinalizer::finalize(Handle<Unknown> handle, void*)
429 JSGlobalObject* globalObject = asGlobalObject(handle.get());
430 globalObject->m_rareData.clear();
433 JSGlobalObject::WeakMapsFinalizer* JSGlobalObject::weakMapsFinalizer()
435 static WeakMapsFinalizer* finalizer = new WeakMapsFinalizer();
439 DynamicGlobalObjectScope::DynamicGlobalObjectScope(JSGlobalData& globalData, JSGlobalObject* dynamicGlobalObject)
440 : m_dynamicGlobalObjectSlot(globalData.dynamicGlobalObject)
441 , m_savedDynamicGlobalObject(m_dynamicGlobalObjectSlot)
443 if (!m_dynamicGlobalObjectSlot) {
444 #if ENABLE(ASSEMBLER)
445 if (ExecutableAllocator::underMemoryPressure())
446 globalData.recompileAllJSFunctions();
449 m_dynamicGlobalObjectSlot = dynamicGlobalObject;
451 // Reset the date cache between JS invocations to force the VM
452 // to observe time zone changes.
453 globalData.resetDateCache();
457 void slowValidateCell(JSGlobalObject* globalObject)
459 if (!globalObject->isGlobalObject())
461 ASSERT_GC_OBJECT_INHERITS(globalObject, &JSGlobalObject::s_info);