1 /*
2 * Copyright (C) 2007, 2008, 2009 Apple Inc. All rights reserved.
3 * Copyright (C) 2008 Cameron Zwarich (cwzwarich@uwaterloo.ca)
4 *
5 * Redistribution and use in source and binary forms, with or without
6 * modification, are permitted provided that the following conditions
7 * are met:
8 *
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.
17 *
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.
28 */
29
30 #include "config.h"
31 #include "JSGlobalObject.h"
32
33 #include "JSCallbackConstructor.h"
34 #include "JSCallbackFunction.h"
35 #include "JSCallbackObject.h"
36
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 "GlobalEvalFunction.h"
50 #include "JSFunction.h"
51 #include "JSGlobalObjectFunctions.h"
52 #include "JSLock.h"
53 #include "JSONObject.h"
54 #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"
62 #include "Profiler.h"
63 #include "PrototypeFunction.h"
64 #include "RegExpConstructor.h"
65 #include "RegExpMatchesArray.h"
66 #include "RegExpObject.h"
67 #include "RegExpPrototype.h"
68 #include "ScopeChainMark.h"
69 #include "StringConstructor.h"
70 #include "StringPrototype.h"
71 #include "Debugger.h"
72
73 namespace JSC {
74
75 ASSERT_CLASS_FITS_IN_CELL(JSGlobalObject);
76
77 // Default number of ticks before a timeout check should be done.
78 static const int initialTickCountThreshold = 255;
79
80 // Preferred number of milliseconds between each timeout check
81 static const int preferredScriptCheckTimeInterval = 1000;
82
markIfNeeded(MarkStack & markStack,JSValue v)83 static inline void markIfNeeded(MarkStack& markStack, JSValue v)
84 {
85 if (v)
86 markStack.append(v);
87 }
88
markIfNeeded(MarkStack & markStack,const RefPtr<Structure> & s)89 static inline void markIfNeeded(MarkStack& markStack, const RefPtr<Structure>& s)
90 {
91 if (s)
92 markIfNeeded(markStack, s->storedPrototype());
93 }
94
~JSGlobalObject()95 JSGlobalObject::~JSGlobalObject()
96 {
97 ASSERT(JSLock::currentThreadIsHoldingLock());
98
99 if (d()->debugger)
100 d()->debugger->detach(this);
101
102 Profiler** profiler = Profiler::enabledProfilerReference();
103 if (UNLIKELY(*profiler != 0)) {
104 (*profiler)->stopProfiling(globalExec(), UString());
105 }
106
107 d()->next->d()->prev = d()->prev;
108 d()->prev->d()->next = d()->next;
109 JSGlobalObject*& headObject = head();
110 if (headObject == this)
111 headObject = d()->next;
112 if (headObject == this)
113 headObject = 0;
114
115 HashSet<GlobalCodeBlock*>::const_iterator end = codeBlocks().end();
116 for (HashSet<GlobalCodeBlock*>::const_iterator it = codeBlocks().begin(); it != end; ++it)
117 (*it)->clearGlobalObject();
118
119 RegisterFile& registerFile = globalData()->interpreter->registerFile();
120 if (registerFile.globalObject() == this) {
121 registerFile.setGlobalObject(0);
122 registerFile.setNumGlobals(0);
123 }
124 d()->destructor(d());
125 }
126
init(JSObject * thisValue)127 void JSGlobalObject::init(JSObject* thisValue)
128 {
129 ASSERT(JSLock::currentThreadIsHoldingLock());
130
131 structure()->disableSpecificFunctionTracking();
132
133 d()->globalData = Heap::heap(this)->globalData();
134 d()->globalScopeChain = ScopeChain(this, d()->globalData.get(), this, thisValue);
135
136 JSGlobalObject::globalExec()->init(0, 0, d()->globalScopeChain.node(), CallFrame::noCaller(), 0, 0, 0);
137
138 if (JSGlobalObject*& headObject = head()) {
139 d()->prev = headObject;
140 d()->next = headObject->d()->next;
141 headObject->d()->next->d()->prev = this;
142 headObject->d()->next = this;
143 } else
144 headObject = d()->next = d()->prev = this;
145
146 d()->recursion = 0;
147 d()->debugger = 0;
148
149 d()->profileGroup = 0;
150
151 reset(prototype());
152 }
153
put(ExecState * exec,const Identifier & propertyName,JSValue value,PutPropertySlot & slot)154 void JSGlobalObject::put(ExecState* exec, const Identifier& propertyName, JSValue value, PutPropertySlot& slot)
155 {
156 ASSERT(!Heap::heap(value) || Heap::heap(value) == Heap::heap(this));
157
158 if (symbolTablePut(propertyName, value))
159 return;
160 JSVariableObject::put(exec, propertyName, value, slot);
161 }
162
putWithAttributes(ExecState * exec,const Identifier & propertyName,JSValue value,unsigned attributes)163 void JSGlobalObject::putWithAttributes(ExecState* exec, const Identifier& propertyName, JSValue value, unsigned attributes)
164 {
165 ASSERT(!Heap::heap(value) || Heap::heap(value) == Heap::heap(this));
166
167 if (symbolTablePutWithAttributes(propertyName, value, attributes))
168 return;
169
170 JSValue valueBefore = getDirect(propertyName);
171 PutPropertySlot slot;
172 JSVariableObject::put(exec, propertyName, value, slot);
173 if (!valueBefore) {
174 JSValue valueAfter = getDirect(propertyName);
175 if (valueAfter)
176 JSObject::putWithAttributes(exec, propertyName, valueAfter, attributes);
177 }
178 }
179
defineGetter(ExecState * exec,const Identifier & propertyName,JSObject * getterFunc,unsigned attributes)180 void JSGlobalObject::defineGetter(ExecState* exec, const Identifier& propertyName, JSObject* getterFunc, unsigned attributes)
181 {
182 PropertySlot slot;
183 if (!symbolTableGet(propertyName, slot))
184 JSVariableObject::defineGetter(exec, propertyName, getterFunc, attributes);
185 }
186
defineSetter(ExecState * exec,const Identifier & propertyName,JSObject * setterFunc,unsigned attributes)187 void JSGlobalObject::defineSetter(ExecState* exec, const Identifier& propertyName, JSObject* setterFunc, unsigned attributes)
188 {
189 PropertySlot slot;
190 if (!symbolTableGet(propertyName, slot))
191 JSVariableObject::defineSetter(exec, propertyName, setterFunc, attributes);
192 }
193
lastInPrototypeChain(JSObject * object)194 static inline JSObject* lastInPrototypeChain(JSObject* object)
195 {
196 JSObject* o = object;
197 while (o->prototype().isObject())
198 o = asObject(o->prototype());
199 return o;
200 }
201
reset(JSValue prototype)202 void JSGlobalObject::reset(JSValue prototype)
203 {
204 ExecState* exec = JSGlobalObject::globalExec();
205
206 // Prototypes
207
208 d()->functionPrototype = new (exec) FunctionPrototype(exec, FunctionPrototype::createStructure(jsNull())); // The real prototype will be set once ObjectPrototype is created.
209 d()->prototypeFunctionStructure = PrototypeFunction::createStructure(d()->functionPrototype);
210 NativeFunctionWrapper* callFunction = 0;
211 NativeFunctionWrapper* applyFunction = 0;
212 d()->functionPrototype->addFunctionProperties(exec, d()->prototypeFunctionStructure.get(), &callFunction, &applyFunction);
213 d()->callFunction = callFunction;
214 d()->applyFunction = applyFunction;
215 d()->objectPrototype = new (exec) ObjectPrototype(exec, ObjectPrototype::createStructure(jsNull()), d()->prototypeFunctionStructure.get());
216 d()->functionPrototype->structure()->setPrototypeWithoutTransition(d()->objectPrototype);
217
218 d()->emptyObjectStructure = d()->objectPrototype->inheritorID();
219
220 d()->functionStructure = JSFunction::createStructure(d()->functionPrototype);
221 d()->callbackFunctionStructure = JSCallbackFunction::createStructure(d()->functionPrototype);
222 d()->argumentsStructure = Arguments::createStructure(d()->objectPrototype);
223 d()->callbackConstructorStructure = JSCallbackConstructor::createStructure(d()->objectPrototype);
224 d()->callbackObjectStructure = JSCallbackObject<JSObject>::createStructure(d()->objectPrototype);
225
226 d()->arrayPrototype = new (exec) ArrayPrototype(ArrayPrototype::createStructure(d()->objectPrototype));
227 d()->arrayStructure = JSArray::createStructure(d()->arrayPrototype);
228 d()->regExpMatchesArrayStructure = RegExpMatchesArray::createStructure(d()->arrayPrototype);
229
230 d()->stringPrototype = new (exec) StringPrototype(exec, StringPrototype::createStructure(d()->objectPrototype));
231 d()->stringObjectStructure = StringObject::createStructure(d()->stringPrototype);
232
233 d()->booleanPrototype = new (exec) BooleanPrototype(exec, BooleanPrototype::createStructure(d()->objectPrototype), d()->prototypeFunctionStructure.get());
234 d()->booleanObjectStructure = BooleanObject::createStructure(d()->booleanPrototype);
235
236 d()->numberPrototype = new (exec) NumberPrototype(exec, NumberPrototype::createStructure(d()->objectPrototype), d()->prototypeFunctionStructure.get());
237 d()->numberObjectStructure = NumberObject::createStructure(d()->numberPrototype);
238
239 d()->datePrototype = new (exec) DatePrototype(exec, DatePrototype::createStructure(d()->objectPrototype));
240 d()->dateStructure = DateInstance::createStructure(d()->datePrototype);
241
242 d()->regExpPrototype = new (exec) RegExpPrototype(exec, RegExpPrototype::createStructure(d()->objectPrototype), d()->prototypeFunctionStructure.get());
243 d()->regExpStructure = RegExpObject::createStructure(d()->regExpPrototype);
244
245 d()->methodCallDummy = constructEmptyObject(exec);
246
247 ErrorPrototype* errorPrototype = new (exec) ErrorPrototype(exec, ErrorPrototype::createStructure(d()->objectPrototype), d()->prototypeFunctionStructure.get());
248 d()->errorStructure = ErrorInstance::createStructure(errorPrototype);
249
250 RefPtr<Structure> nativeErrorPrototypeStructure = NativeErrorPrototype::createStructure(errorPrototype);
251
252 NativeErrorPrototype* evalErrorPrototype = new (exec) NativeErrorPrototype(exec, nativeErrorPrototypeStructure, "EvalError", "EvalError");
253 NativeErrorPrototype* rangeErrorPrototype = new (exec) NativeErrorPrototype(exec, nativeErrorPrototypeStructure, "RangeError", "RangeError");
254 NativeErrorPrototype* referenceErrorPrototype = new (exec) NativeErrorPrototype(exec, nativeErrorPrototypeStructure, "ReferenceError", "ReferenceError");
255 NativeErrorPrototype* syntaxErrorPrototype = new (exec) NativeErrorPrototype(exec, nativeErrorPrototypeStructure, "SyntaxError", "SyntaxError");
256 NativeErrorPrototype* typeErrorPrototype = new (exec) NativeErrorPrototype(exec, nativeErrorPrototypeStructure, "TypeError", "TypeError");
257 NativeErrorPrototype* URIErrorPrototype = new (exec) NativeErrorPrototype(exec, nativeErrorPrototypeStructure, "URIError", "URIError");
258
259 // Constructors
260
261 JSCell* objectConstructor = new (exec) ObjectConstructor(exec, ObjectConstructor::createStructure(d()->functionPrototype), d()->objectPrototype, d()->prototypeFunctionStructure.get());
262 JSCell* functionConstructor = new (exec) FunctionConstructor(exec, FunctionConstructor::createStructure(d()->functionPrototype), d()->functionPrototype);
263 JSCell* arrayConstructor = new (exec) ArrayConstructor(exec, ArrayConstructor::createStructure(d()->functionPrototype), d()->arrayPrototype, d()->prototypeFunctionStructure.get());
264 JSCell* stringConstructor = new (exec) StringConstructor(exec, StringConstructor::createStructure(d()->functionPrototype), d()->prototypeFunctionStructure.get(), d()->stringPrototype);
265 JSCell* booleanConstructor = new (exec) BooleanConstructor(exec, BooleanConstructor::createStructure(d()->functionPrototype), d()->booleanPrototype);
266 JSCell* numberConstructor = new (exec) NumberConstructor(exec, NumberConstructor::createStructure(d()->functionPrototype), d()->numberPrototype);
267 JSCell* dateConstructor = new (exec) DateConstructor(exec, DateConstructor::createStructure(d()->functionPrototype), d()->prototypeFunctionStructure.get(), d()->datePrototype);
268
269 d()->regExpConstructor = new (exec) RegExpConstructor(exec, RegExpConstructor::createStructure(d()->functionPrototype), d()->regExpPrototype);
270
271 d()->errorConstructor = new (exec) ErrorConstructor(exec, ErrorConstructor::createStructure(d()->functionPrototype), errorPrototype);
272
273 RefPtr<Structure> nativeErrorStructure = NativeErrorConstructor::createStructure(d()->functionPrototype);
274
275 d()->evalErrorConstructor = new (exec) NativeErrorConstructor(exec, nativeErrorStructure, evalErrorPrototype);
276 d()->rangeErrorConstructor = new (exec) NativeErrorConstructor(exec, nativeErrorStructure, rangeErrorPrototype);
277 d()->referenceErrorConstructor = new (exec) NativeErrorConstructor(exec, nativeErrorStructure, referenceErrorPrototype);
278 d()->syntaxErrorConstructor = new (exec) NativeErrorConstructor(exec, nativeErrorStructure, syntaxErrorPrototype);
279 d()->typeErrorConstructor = new (exec) NativeErrorConstructor(exec, nativeErrorStructure, typeErrorPrototype);
280 d()->URIErrorConstructor = new (exec) NativeErrorConstructor(exec, nativeErrorStructure, URIErrorPrototype);
281
282 d()->objectPrototype->putDirectFunctionWithoutTransition(exec->propertyNames().constructor, objectConstructor, DontEnum);
283 d()->functionPrototype->putDirectFunctionWithoutTransition(exec->propertyNames().constructor, functionConstructor, DontEnum);
284 d()->arrayPrototype->putDirectFunctionWithoutTransition(exec->propertyNames().constructor, arrayConstructor, DontEnum);
285 d()->booleanPrototype->putDirectFunctionWithoutTransition(exec->propertyNames().constructor, booleanConstructor, DontEnum);
286 d()->stringPrototype->putDirectFunctionWithoutTransition(exec->propertyNames().constructor, stringConstructor, DontEnum);
287 d()->numberPrototype->putDirectFunctionWithoutTransition(exec->propertyNames().constructor, numberConstructor, DontEnum);
288 d()->datePrototype->putDirectFunctionWithoutTransition(exec->propertyNames().constructor, dateConstructor, DontEnum);
289 d()->regExpPrototype->putDirectFunctionWithoutTransition(exec->propertyNames().constructor, d()->regExpConstructor, DontEnum);
290 errorPrototype->putDirectFunctionWithoutTransition(exec->propertyNames().constructor, d()->errorConstructor, DontEnum);
291
292 evalErrorPrototype->putDirect(exec->propertyNames().constructor, d()->evalErrorConstructor, DontEnum);
293 rangeErrorPrototype->putDirect(exec->propertyNames().constructor, d()->rangeErrorConstructor, DontEnum);
294 referenceErrorPrototype->putDirect(exec->propertyNames().constructor, d()->referenceErrorConstructor, DontEnum);
295 syntaxErrorPrototype->putDirect(exec->propertyNames().constructor, d()->syntaxErrorConstructor, DontEnum);
296 typeErrorPrototype->putDirect(exec->propertyNames().constructor, d()->typeErrorConstructor, DontEnum);
297 URIErrorPrototype->putDirect(exec->propertyNames().constructor, d()->URIErrorConstructor, DontEnum);
298
299 // Set global constructors
300
301 // FIXME: These properties could be handled by a static hash table.
302
303 putDirectFunctionWithoutTransition(Identifier(exec, "Object"), objectConstructor, DontEnum);
304 putDirectFunctionWithoutTransition(Identifier(exec, "Function"), functionConstructor, DontEnum);
305 putDirectFunctionWithoutTransition(Identifier(exec, "Array"), arrayConstructor, DontEnum);
306 putDirectFunctionWithoutTransition(Identifier(exec, "Boolean"), booleanConstructor, DontEnum);
307 putDirectFunctionWithoutTransition(Identifier(exec, "String"), stringConstructor, DontEnum);
308 putDirectFunctionWithoutTransition(Identifier(exec, "Number"), numberConstructor, DontEnum);
309 putDirectFunctionWithoutTransition(Identifier(exec, "Date"), dateConstructor, DontEnum);
310 putDirectFunctionWithoutTransition(Identifier(exec, "RegExp"), d()->regExpConstructor, DontEnum);
311 putDirectFunctionWithoutTransition(Identifier(exec, "Error"), d()->errorConstructor, DontEnum);
312 putDirectFunctionWithoutTransition(Identifier(exec, "EvalError"), d()->evalErrorConstructor);
313 putDirectFunctionWithoutTransition(Identifier(exec, "RangeError"), d()->rangeErrorConstructor);
314 putDirectFunctionWithoutTransition(Identifier(exec, "ReferenceError"), d()->referenceErrorConstructor);
315 putDirectFunctionWithoutTransition(Identifier(exec, "SyntaxError"), d()->syntaxErrorConstructor);
316 putDirectFunctionWithoutTransition(Identifier(exec, "TypeError"), d()->typeErrorConstructor);
317 putDirectFunctionWithoutTransition(Identifier(exec, "URIError"), d()->URIErrorConstructor);
318
319 // Set global values.
320 GlobalPropertyInfo staticGlobals[] = {
321 GlobalPropertyInfo(Identifier(exec, "Math"), new (exec) MathObject(exec, MathObject::createStructure(d()->objectPrototype)), DontEnum | DontDelete),
322 GlobalPropertyInfo(Identifier(exec, "NaN"), jsNaN(exec), DontEnum | DontDelete),
323 GlobalPropertyInfo(Identifier(exec, "Infinity"), jsNumber(exec, Inf), DontEnum | DontDelete),
324 GlobalPropertyInfo(Identifier(exec, "undefined"), jsUndefined(), DontEnum | DontDelete),
325 GlobalPropertyInfo(Identifier(exec, "JSON"), new (exec) JSONObject(JSONObject::createStructure(d()->objectPrototype)), DontEnum | DontDelete)
326 };
327
328 addStaticGlobals(staticGlobals, sizeof(staticGlobals) / sizeof(GlobalPropertyInfo));
329
330 // Set global functions.
331
332 d()->evalFunction = new (exec) GlobalEvalFunction(exec, GlobalEvalFunction::createStructure(d()->functionPrototype), 1, exec->propertyNames().eval, globalFuncEval, this);
333 putDirectFunctionWithoutTransition(exec, d()->evalFunction, DontEnum);
334 putDirectFunctionWithoutTransition(exec, new (exec) NativeFunctionWrapper(exec, d()->prototypeFunctionStructure.get(), 2, Identifier(exec, "parseInt"), globalFuncParseInt), DontEnum);
335 putDirectFunctionWithoutTransition(exec, new (exec) NativeFunctionWrapper(exec, d()->prototypeFunctionStructure.get(), 1, Identifier(exec, "parseFloat"), globalFuncParseFloat), DontEnum);
336 putDirectFunctionWithoutTransition(exec, new (exec) NativeFunctionWrapper(exec, d()->prototypeFunctionStructure.get(), 1, Identifier(exec, "isNaN"), globalFuncIsNaN), DontEnum);
337 putDirectFunctionWithoutTransition(exec, new (exec) NativeFunctionWrapper(exec, d()->prototypeFunctionStructure.get(), 1, Identifier(exec, "isFinite"), globalFuncIsFinite), DontEnum);
338 putDirectFunctionWithoutTransition(exec, new (exec) NativeFunctionWrapper(exec, d()->prototypeFunctionStructure.get(), 1, Identifier(exec, "escape"), globalFuncEscape), DontEnum);
339 putDirectFunctionWithoutTransition(exec, new (exec) NativeFunctionWrapper(exec, d()->prototypeFunctionStructure.get(), 1, Identifier(exec, "unescape"), globalFuncUnescape), DontEnum);
340 putDirectFunctionWithoutTransition(exec, new (exec) NativeFunctionWrapper(exec, d()->prototypeFunctionStructure.get(), 1, Identifier(exec, "decodeURI"), globalFuncDecodeURI), DontEnum);
341 putDirectFunctionWithoutTransition(exec, new (exec) NativeFunctionWrapper(exec, d()->prototypeFunctionStructure.get(), 1, Identifier(exec, "decodeURIComponent"), globalFuncDecodeURIComponent), DontEnum);
342 putDirectFunctionWithoutTransition(exec, new (exec) NativeFunctionWrapper(exec, d()->prototypeFunctionStructure.get(), 1, Identifier(exec, "encodeURI"), globalFuncEncodeURI), DontEnum);
343 putDirectFunctionWithoutTransition(exec, new (exec) NativeFunctionWrapper(exec, d()->prototypeFunctionStructure.get(), 1, Identifier(exec, "encodeURIComponent"), globalFuncEncodeURIComponent), DontEnum);
344 #ifndef NDEBUG
345 putDirectFunctionWithoutTransition(exec, new (exec) NativeFunctionWrapper(exec, d()->prototypeFunctionStructure.get(), 1, Identifier(exec, "jscprint"), globalFuncJSCPrint), DontEnum);
346 #endif
347
348 resetPrototype(prototype);
349 }
350
351 // Set prototype, and also insert the object prototype at the end of the chain.
resetPrototype(JSValue prototype)352 void JSGlobalObject::resetPrototype(JSValue prototype)
353 {
354 setPrototype(prototype);
355
356 JSObject* oldLastInPrototypeChain = lastInPrototypeChain(this);
357 JSObject* objectPrototype = d()->objectPrototype;
358 if (oldLastInPrototypeChain != objectPrototype)
359 oldLastInPrototypeChain->setPrototype(objectPrototype);
360 }
361
markChildren(MarkStack & markStack)362 void JSGlobalObject::markChildren(MarkStack& markStack)
363 {
364 JSVariableObject::markChildren(markStack);
365
366 HashSet<GlobalCodeBlock*>::const_iterator end = codeBlocks().end();
367 for (HashSet<GlobalCodeBlock*>::const_iterator it = codeBlocks().begin(); it != end; ++it)
368 (*it)->markAggregate(markStack);
369
370 RegisterFile& registerFile = globalData()->interpreter->registerFile();
371 if (registerFile.globalObject() == this)
372 registerFile.markGlobals(markStack, &globalData()->heap);
373
374 markIfNeeded(markStack, d()->regExpConstructor);
375 markIfNeeded(markStack, d()->errorConstructor);
376 markIfNeeded(markStack, d()->evalErrorConstructor);
377 markIfNeeded(markStack, d()->rangeErrorConstructor);
378 markIfNeeded(markStack, d()->referenceErrorConstructor);
379 markIfNeeded(markStack, d()->syntaxErrorConstructor);
380 markIfNeeded(markStack, d()->typeErrorConstructor);
381 markIfNeeded(markStack, d()->URIErrorConstructor);
382
383 markIfNeeded(markStack, d()->evalFunction);
384 markIfNeeded(markStack, d()->callFunction);
385 markIfNeeded(markStack, d()->applyFunction);
386
387 markIfNeeded(markStack, d()->objectPrototype);
388 markIfNeeded(markStack, d()->functionPrototype);
389 markIfNeeded(markStack, d()->arrayPrototype);
390 markIfNeeded(markStack, d()->booleanPrototype);
391 markIfNeeded(markStack, d()->stringPrototype);
392 markIfNeeded(markStack, d()->numberPrototype);
393 markIfNeeded(markStack, d()->datePrototype);
394 markIfNeeded(markStack, d()->regExpPrototype);
395
396 markIfNeeded(markStack, d()->methodCallDummy);
397
398 markIfNeeded(markStack, d()->errorStructure);
399 markIfNeeded(markStack, d()->argumentsStructure);
400 markIfNeeded(markStack, d()->arrayStructure);
401 markIfNeeded(markStack, d()->booleanObjectStructure);
402 markIfNeeded(markStack, d()->callbackConstructorStructure);
403 markIfNeeded(markStack, d()->callbackFunctionStructure);
404 markIfNeeded(markStack, d()->callbackObjectStructure);
405 markIfNeeded(markStack, d()->dateStructure);
406 markIfNeeded(markStack, d()->emptyObjectStructure);
407 markIfNeeded(markStack, d()->errorStructure);
408 markIfNeeded(markStack, d()->functionStructure);
409 markIfNeeded(markStack, d()->numberObjectStructure);
410 markIfNeeded(markStack, d()->prototypeFunctionStructure);
411 markIfNeeded(markStack, d()->regExpMatchesArrayStructure);
412 markIfNeeded(markStack, d()->regExpStructure);
413 markIfNeeded(markStack, d()->stringObjectStructure);
414
415 // No need to mark the other structures, because their prototypes are all
416 // guaranteed to be referenced elsewhere.
417
418 Register* registerArray = d()->registerArray.get();
419 if (!registerArray)
420 return;
421
422 size_t size = d()->registerArraySize;
423 markStack.appendValues(reinterpret_cast<JSValue*>(registerArray), size);
424 }
425
globalExec()426 ExecState* JSGlobalObject::globalExec()
427 {
428 return CallFrame::create(d()->globalCallFrame + RegisterFile::CallFrameHeaderSize);
429 }
430
isDynamicScope() const431 bool JSGlobalObject::isDynamicScope() const
432 {
433 return true;
434 }
435
copyGlobalsFrom(RegisterFile & registerFile)436 void JSGlobalObject::copyGlobalsFrom(RegisterFile& registerFile)
437 {
438 ASSERT(!d()->registerArray);
439 ASSERT(!d()->registerArraySize);
440
441 int numGlobals = registerFile.numGlobals();
442 if (!numGlobals) {
443 d()->registers = 0;
444 return;
445 }
446
447 Register* registerArray = copyRegisterArray(registerFile.lastGlobal(), numGlobals);
448 setRegisters(registerArray + numGlobals, registerArray, numGlobals);
449 }
450
copyGlobalsTo(RegisterFile & registerFile)451 void JSGlobalObject::copyGlobalsTo(RegisterFile& registerFile)
452 {
453 JSGlobalObject* lastGlobalObject = registerFile.globalObject();
454 if (lastGlobalObject && lastGlobalObject != this)
455 lastGlobalObject->copyGlobalsFrom(registerFile);
456
457 registerFile.setGlobalObject(this);
458 registerFile.setNumGlobals(symbolTable().size());
459
460 if (d()->registerArray) {
461 memcpy(registerFile.start() - d()->registerArraySize, d()->registerArray.get(), d()->registerArraySize * sizeof(Register));
462 setRegisters(registerFile.start(), 0, 0);
463 }
464 }
465
operator new(size_t size,JSGlobalData * globalData)466 void* JSGlobalObject::operator new(size_t size, JSGlobalData* globalData)
467 {
468 return globalData->heap.allocate(size);
469 }
470
destroyJSGlobalObjectData(void * jsGlobalObjectData)471 void JSGlobalObject::destroyJSGlobalObjectData(void* jsGlobalObjectData)
472 {
473 delete static_cast<JSGlobalObjectData*>(jsGlobalObjectData);
474 }
475
476 } // namespace JSC
477