Repository navigation
Expand file tree
/
Copy pathExecutable.h
More file actions
713 lines (587 loc) · 23.4 KB
/
Copy pathExecutable.h
File metadata and controls
713 lines (587 loc) · 23.4 KB
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
340
341
342
343
344
345
346
347
348
349
350
351
352
353
354
355
356
357
358
359
360
361
362
363
364
365
366
367
368
369
370
371
372
373
374
375
376
377
378
379
380
381
382
383
384
385
386
387
388
389
390
391
392
393
394
395
396
397
398
399
400
401
402
403
404
405
406
407
408
409
410
411
412
413
414
415
416
417
418
419
420
421
422
423
424
425
426
427
428
429
430
431
432
433
434
435
436
437
438
439
440
441
442
443
444
445
446
447
448
449
450
451
452
453
454
455
456
457
458
459
460
461
462
463
464
465
466
467
468
469
470
471
472
473
474
475
476
477
478
479
480
481
482
483
484
485
486
487
488
489
490
491
492
493
494
495
496
497
498
499
500
501
502
503
504
505
506
507
508
509
510
511
512
513
514
515
516
517
518
519
520
521
522
523
524
525
526
527
528
529
530
531
532
533
534
535
536
537
538
539
540
541
542
543
544
545
546
547
548
549
550
551
552
553
554
555
556
557
558
559
560
561
562
563
564
565
566
567
568
569
570
571
572
573
574
575
576
577
578
579
580
581
582
583
584
585
586
587
588
589
590
591
592
593
594
595
596
597
598
599
600
601
602
603
604
605
606
607
608
609
610
611
612
613
614
615
616
617
618
619
620
621
622
623
624
625
626
627
628
629
630
631
632
633
634
635
636
637
638
639
640
641
642
643
644
645
646
647
648
649
650
651
652
653
654
655
656
657
658
659
660
661
662
663
664
665
666
667
668
669
670
671
672
673
674
675
676
677
678
679
680
681
682
683
684
685
686
687
688
689
690
691
692
693
694
695
696
697
698
699
700
701
702
703
704
705
706
707
708
709
710
711
712
713
/*
* Copyright (C) 2009, 2010, 2013 Apple Inc. All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
*
* THIS SOFTWARE IS PROVIDED BY APPLE INC. ``AS IS'' AND ANY
* EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
* PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL APPLE INC. OR
* CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
* EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
* PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
* PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY
* OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/
#ifndef Executable_h
#define Executable_h
#include "ArityCheckMode.h"
#include "CallData.h"
#include "CodeBlockHash.h"
#include "CodeSpecializationKind.h"
#include "CompilationResult.h"
#include "DFGPlan.h"
#include "HandlerInfo.h"
#include "JSFunction.h"
#include "Interpreter.h"
#include "JITCode.h"
#include "JSGlobalObject.h"
#include "RegisterPreservationMode.h"
#include "SamplingTool.h"
#include "SourceCode.h"
#include "UnlinkedCodeBlock.h"
#include <wtf/PassOwnPtr.h>
namespace JSC {
class CodeBlock;
class Debugger;
class EvalCodeBlock;
class FunctionCodeBlock;
class LLIntOffsetsExtractor;
class ProgramCodeBlock;
class JSScope;
enum CompilationKind { FirstCompilation, OptimizingCompilation };
inline bool isCall(CodeSpecializationKind kind)
{
if (kind == CodeForCall)
return true;
ASSERT(kind == CodeForConstruct);
return false;
}
class ExecutableBase : public JSCell, public DoublyLinkedListNode<ExecutableBase> {
friend class WTF::DoublyLinkedListNode<ExecutableBase>;
friend class JIT;
protected:
static const int NUM_PARAMETERS_IS_HOST = 0;
static const int NUM_PARAMETERS_NOT_COMPILED = -1;
ExecutableBase(VM& vm, Structure* structure, int numParameters)
: JSCell(vm, structure)
, m_numParametersForCall(numParameters)
, m_numParametersForConstruct(numParameters)
{
}
void finishCreation(VM& vm)
{
Base::finishCreation(vm);
}
public:
typedef JSCell Base;
#if ENABLE(JIT)
static const bool needsDestruction = true;
static const bool hasImmortalStructure = true;
static void destroy(JSCell*);
#endif
CodeBlockHash hashFor(CodeSpecializationKind) const;
bool isEvalExecutable()
{
return type() == EvalExecutableType;
}
bool isFunctionExecutable()
{
return type() == FunctionExecutableType;
}
bool isProgramExecutable()
{
return type() == ProgramExecutableType;
}
bool isHostFunction() const
{
ASSERT((m_numParametersForCall == NUM_PARAMETERS_IS_HOST) == (m_numParametersForConstruct == NUM_PARAMETERS_IS_HOST));
return m_numParametersForCall == NUM_PARAMETERS_IS_HOST;
}
static Structure* createStructure(VM& vm, JSGlobalObject* globalObject, JSValue proto) { return Structure::create(vm, globalObject, proto, TypeInfo(CompoundType, StructureFlags), info()); }
void clearCode();
DECLARE_EXPORT_INFO;
protected:
static const unsigned StructureFlags = StructureIsImmortal;
int m_numParametersForCall;
int m_numParametersForConstruct;
public:
static void clearCodeVirtual(ExecutableBase*);
PassRefPtr<JITCode> generatedJITCodeForCall()
{
ASSERT(m_jitCodeForCall);
return m_jitCodeForCall;
}
PassRefPtr<JITCode> generatedJITCodeForConstruct()
{
ASSERT(m_jitCodeForConstruct);
return m_jitCodeForConstruct;
}
PassRefPtr<JITCode> generatedJITCodeFor(CodeSpecializationKind kind)
{
if (kind == CodeForCall)
return generatedJITCodeForCall();
ASSERT(kind == CodeForConstruct);
return generatedJITCodeForConstruct();
}
MacroAssemblerCodePtr entrypointFor(
VM& vm, CodeSpecializationKind kind, ArityCheckMode arity, RegisterPreservationMode registers)
{
// Check if we have a cached result. We only have it for arity check because we use the
// no-arity entrypoint in non-virtual calls, which will "cache" this value directly in
// machine code.
if (arity == MustCheckArity) {
switch (kind) {
case CodeForCall:
switch (registers) {
case RegisterPreservationNotRequired:
if (MacroAssemblerCodePtr result = m_jitCodeForCallWithArityCheck)
return result;
break;
case MustPreserveRegisters:
if (MacroAssemblerCodePtr result = m_jitCodeForCallWithArityCheckAndPreserveRegs)
return result;
break;
}
break;
case CodeForConstruct:
switch (registers) {
case RegisterPreservationNotRequired:
if (MacroAssemblerCodePtr result = m_jitCodeForConstructWithArityCheck)
return result;
break;
case MustPreserveRegisters:
if (MacroAssemblerCodePtr result = m_jitCodeForConstructWithArityCheckAndPreserveRegs)
return result;
break;
}
break;
}
}
MacroAssemblerCodePtr result =
generatedJITCodeFor(kind)->addressForCall(vm, this, arity, registers);
if (arity == MustCheckArity) {
// Cache the result; this is necessary for the JIT's virtual call optimizations.
switch (kind) {
case CodeForCall:
switch (registers) {
case RegisterPreservationNotRequired:
m_jitCodeForCallWithArityCheck = result;
break;
case MustPreserveRegisters:
m_jitCodeForCallWithArityCheckAndPreserveRegs = result;
break;
}
break;
case CodeForConstruct:
switch (registers) {
case RegisterPreservationNotRequired:
m_jitCodeForConstructWithArityCheck = result;
break;
case MustPreserveRegisters:
m_jitCodeForConstructWithArityCheckAndPreserveRegs = result;
break;
}
break;
}
}
return result;
}
static ptrdiff_t offsetOfJITCodeWithArityCheckFor(
CodeSpecializationKind kind, RegisterPreservationMode registers)
{
switch (kind) {
case CodeForCall:
switch (registers) {
case RegisterPreservationNotRequired:
return OBJECT_OFFSETOF(ExecutableBase, m_jitCodeForCallWithArityCheck);
case MustPreserveRegisters:
return OBJECT_OFFSETOF(ExecutableBase, m_jitCodeForCallWithArityCheckAndPreserveRegs);
}
case CodeForConstruct:
switch (registers) {
case RegisterPreservationNotRequired:
return OBJECT_OFFSETOF(ExecutableBase, m_jitCodeForConstructWithArityCheck);
case MustPreserveRegisters:
return OBJECT_OFFSETOF(ExecutableBase, m_jitCodeForConstructWithArityCheckAndPreserveRegs);
}
}
RELEASE_ASSERT_NOT_REACHED();
return 0;
}
static ptrdiff_t offsetOfNumParametersFor(CodeSpecializationKind kind)
{
if (kind == CodeForCall)
return OBJECT_OFFSETOF(ExecutableBase, m_numParametersForCall);
ASSERT(kind == CodeForConstruct);
return OBJECT_OFFSETOF(ExecutableBase, m_numParametersForConstruct);
}
bool hasJITCodeForCall() const
{
return m_numParametersForCall >= 0;
}
bool hasJITCodeForConstruct() const
{
return m_numParametersForConstruct >= 0;
}
bool hasJITCodeFor(CodeSpecializationKind kind) const
{
if (kind == CodeForCall)
return hasJITCodeForCall();
ASSERT(kind == CodeForConstruct);
return hasJITCodeForConstruct();
}
// Intrinsics are only for calls, currently.
Intrinsic intrinsic() const;
Intrinsic intrinsicFor(CodeSpecializationKind kind) const
{
if (isCall(kind))
return intrinsic();
return NoIntrinsic;
}
void dump(PrintStream&) const;
protected:
ExecutableBase* m_prev;
ExecutableBase* m_next;
RefPtr<JITCode> m_jitCodeForCall;
RefPtr<JITCode> m_jitCodeForConstruct;
MacroAssemblerCodePtr m_jitCodeForCallWithArityCheck;
MacroAssemblerCodePtr m_jitCodeForConstructWithArityCheck;
MacroAssemblerCodePtr m_jitCodeForCallWithArityCheckAndPreserveRegs;
MacroAssemblerCodePtr m_jitCodeForConstructWithArityCheckAndPreserveRegs;
};
class NativeExecutable : public ExecutableBase {
friend class JIT;
friend class LLIntOffsetsExtractor;
public:
typedef ExecutableBase Base;
static NativeExecutable* create(VM& vm, PassRefPtr<JITCode> callThunk, NativeFunction function, PassRefPtr<JITCode> constructThunk, NativeFunction constructor, Intrinsic intrinsic)
{
NativeExecutable* executable;
executable = new (NotNull, allocateCell<NativeExecutable>(vm.heap)) NativeExecutable(vm, function, constructor);
executable->finishCreation(vm, callThunk, constructThunk, intrinsic);
return executable;
}
#if ENABLE(JIT)
static void destroy(JSCell*);
#endif
CodeBlockHash hashFor(CodeSpecializationKind) const;
NativeFunction function() { return m_function; }
NativeFunction constructor() { return m_constructor; }
NativeFunction nativeFunctionFor(CodeSpecializationKind kind)
{
if (kind == CodeForCall)
return function();
ASSERT(kind == CodeForConstruct);
return constructor();
}
static ptrdiff_t offsetOfNativeFunctionFor(CodeSpecializationKind kind)
{
if (kind == CodeForCall)
return OBJECT_OFFSETOF(NativeExecutable, m_function);
ASSERT(kind == CodeForConstruct);
return OBJECT_OFFSETOF(NativeExecutable, m_constructor);
}
static Structure* createStructure(VM& vm, JSGlobalObject* globalObject, JSValue proto) { return Structure::create(vm, globalObject, proto, TypeInfo(LeafType, StructureFlags), info()); }
DECLARE_INFO;
Intrinsic intrinsic() const;
protected:
void finishCreation(VM& vm, PassRefPtr<JITCode> callThunk, PassRefPtr<JITCode> constructThunk, Intrinsic intrinsic)
{
Base::finishCreation(vm);
m_jitCodeForCall = callThunk;
m_jitCodeForConstruct = constructThunk;
m_intrinsic = intrinsic;
}
private:
NativeExecutable(VM& vm, NativeFunction function, NativeFunction constructor)
: ExecutableBase(vm, vm.nativeExecutableStructure.get(), NUM_PARAMETERS_IS_HOST)
, m_function(function)
, m_constructor(constructor)
{
}
NativeFunction m_function;
NativeFunction m_constructor;
Intrinsic m_intrinsic;
};
class ScriptExecutable : public ExecutableBase {
public:
typedef ExecutableBase Base;
ScriptExecutable(Structure* structure, VM& vm, const SourceCode& source, bool isInStrictContext)
: ExecutableBase(vm, structure, NUM_PARAMETERS_NOT_COMPILED)
, m_source(source)
, m_features(isInStrictContext ? StrictModeFeature : 0)
, m_neverInline(false)
, m_startColumn(UINT_MAX)
, m_endColumn(UINT_MAX)
{
}
ScriptExecutable(Structure* structure, ExecState* exec, const SourceCode& source, bool isInStrictContext)
: ExecutableBase(exec->vm(), structure, NUM_PARAMETERS_NOT_COMPILED)
, m_source(source)
, m_features(isInStrictContext ? StrictModeFeature : 0)
, m_neverInline(false)
, m_startColumn(UINT_MAX)
, m_endColumn(UINT_MAX)
{
}
#if ENABLE(JIT)
static void destroy(JSCell*);
#endif
CodeBlockHash hashFor(CodeSpecializationKind) const;
const SourceCode& source() const { return m_source; }
intptr_t sourceID() const { return m_source.providerID(); }
const String& sourceURL() const { return m_source.provider()->url(); }
int lineNo() const { return m_firstLine; }
int lastLine() const { return m_lastLine; }
unsigned startColumn() const { return m_startColumn; }
unsigned endColumn() const { return m_endColumn; }
bool usesEval() const { return m_features & EvalFeature; }
bool usesArguments() const { return m_features & ArgumentsFeature; }
bool needsActivation() const { return m_hasCapturedVariables || m_features & (EvalFeature | WithFeature | CatchFeature); }
bool isStrictMode() const { return m_features & StrictModeFeature; }
ECMAMode ecmaMode() const { return isStrictMode() ? StrictMode : NotStrictMode; }
void setNeverInline(bool value) { m_neverInline = value; }
bool neverInline() const { return m_neverInline; }
bool isInliningCandidate() const { return !neverInline(); }
void unlinkCalls();
CodeFeatures features() const { return m_features; }
DECLARE_INFO;
void recordParse(CodeFeatures features, bool hasCapturedVariables, int firstLine, int lastLine, unsigned startColumn, unsigned endColumn)
{
m_features = features;
m_hasCapturedVariables = hasCapturedVariables;
m_firstLine = firstLine;
m_lastLine = lastLine;
ASSERT(startColumn != UINT_MAX);
m_startColumn = startColumn;
ASSERT(endColumn != UINT_MAX);
m_endColumn = endColumn;
}
void installCode(CodeBlock*);
PassRefPtr<CodeBlock> newCodeBlockFor(CodeSpecializationKind, JSFunction*, JSScope**, JSObject*& exception);
PassRefPtr<CodeBlock> newReplacementCodeBlockFor(CodeSpecializationKind);
JSObject* prepareForExecution(ExecState* exec, JSFunction* function, JSScope** scope, CodeSpecializationKind kind)
{
if (hasJITCodeFor(kind))
return 0;
return prepareForExecutionImpl(exec, function, scope, kind);
}
template <typename Functor> void forEachCodeBlock(Functor&&);
private:
JSObject* prepareForExecutionImpl(ExecState*, JSFunction*, JSScope**, CodeSpecializationKind);
protected:
void finishCreation(VM& vm)
{
Base::finishCreation(vm);
vm.heap.addCompiledCode(this); // Balanced by Heap::deleteUnmarkedCompiledCode().
#if ENABLE(CODEBLOCK_SAMPLING)
if (SamplingTool* sampler = vm.interpreter->sampler())
sampler->notifyOfScope(vm, this);
#endif
}
SourceCode m_source;
CodeFeatures m_features;
bool m_hasCapturedVariables;
bool m_neverInline;
int m_firstLine;
int m_lastLine;
unsigned m_startColumn;
unsigned m_endColumn;
};
class EvalExecutable : public ScriptExecutable {
friend class LLIntOffsetsExtractor;
public:
typedef ScriptExecutable Base;
static void destroy(JSCell*);
EvalCodeBlock* codeBlock()
{
return m_evalCodeBlock.get();
}
static EvalExecutable* create(ExecState*, const SourceCode&, bool isInStrictContext);
PassRefPtr<JITCode> generatedJITCode()
{
return generatedJITCodeForCall();
}
static Structure* createStructure(VM& vm, JSGlobalObject* globalObject, JSValue proto)
{
return Structure::create(vm, globalObject, proto, TypeInfo(EvalExecutableType, StructureFlags), info());
}
DECLARE_INFO;
void unlinkCalls();
void clearCode();
ExecutableInfo executableInfo() const { return ExecutableInfo(needsActivation(), usesEval(), isStrictMode(), false, false); }
unsigned numVariables() { return m_unlinkedEvalCodeBlock->numVariables(); }
unsigned numberOfFunctionDecls() { return m_unlinkedEvalCodeBlock->numberOfFunctionDecls(); }
private:
friend class ScriptExecutable;
static const unsigned StructureFlags = OverridesVisitChildren | ScriptExecutable::StructureFlags;
EvalExecutable(ExecState*, const SourceCode&, bool);
static void visitChildren(JSCell*, SlotVisitor&);
RefPtr<EvalCodeBlock> m_evalCodeBlock;
WriteBarrier<UnlinkedEvalCodeBlock> m_unlinkedEvalCodeBlock;
};
class ProgramExecutable : public ScriptExecutable {
friend class LLIntOffsetsExtractor;
public:
typedef ScriptExecutable Base;
static ProgramExecutable* create(ExecState* exec, const SourceCode& source)
{
ProgramExecutable* executable = new (NotNull, allocateCell<ProgramExecutable>(*exec->heap())) ProgramExecutable(exec, source);
executable->finishCreation(exec->vm());
return executable;
}
JSObject* initializeGlobalProperties(VM&, CallFrame*, JSScope*);
static void destroy(JSCell*);
ProgramCodeBlock* codeBlock()
{
return m_programCodeBlock.get();
}
JSObject* checkSyntax(ExecState*);
PassRefPtr<JITCode> generatedJITCode()
{
return generatedJITCodeForCall();
}
static Structure* createStructure(VM& vm, JSGlobalObject* globalObject, JSValue proto)
{
return Structure::create(vm, globalObject, proto, TypeInfo(ProgramExecutableType, StructureFlags), info());
}
DECLARE_INFO;
void unlinkCalls();
void clearCode();
ExecutableInfo executableInfo() const { return ExecutableInfo(needsActivation(), usesEval(), isStrictMode(), false, false); }
private:
friend class ScriptExecutable;
static const unsigned StructureFlags = OverridesVisitChildren | ScriptExecutable::StructureFlags;
ProgramExecutable(ExecState*, const SourceCode&);
static void visitChildren(JSCell*, SlotVisitor&);
WriteBarrier<UnlinkedProgramCodeBlock> m_unlinkedProgramCodeBlock;
RefPtr<ProgramCodeBlock> m_programCodeBlock;
};
class FunctionExecutable : public ScriptExecutable {
friend class JIT;
friend class LLIntOffsetsExtractor;
public:
typedef ScriptExecutable Base;
static FunctionExecutable* create(VM& vm, const SourceCode& source, UnlinkedFunctionExecutable* unlinkedExecutable, unsigned firstLine, unsigned lastLine, unsigned startColumn, unsigned endColumn, bool bodyIncludesBraces = true)
{
FunctionExecutable* executable = new (NotNull, allocateCell<FunctionExecutable>(vm.heap)) FunctionExecutable(vm, source, unlinkedExecutable, firstLine, lastLine, startColumn, endColumn, bodyIncludesBraces);
executable->finishCreation(vm);
return executable;
}
static FunctionExecutable* fromGlobalCode(const Identifier& name, ExecState*, Debugger*, const SourceCode&, JSObject** exception);
static void destroy(JSCell*);
UnlinkedFunctionExecutable* unlinkedExecutable()
{
return m_unlinkedExecutable.get();
}
// Returns either call or construct bytecode. This can be appropriate
// for answering questions that that don't vary between call and construct --
// for example, argumentsRegister().
FunctionCodeBlock* eitherCodeBlock()
{
if (m_codeBlockForCall)
return m_codeBlockForCall.get();
return m_codeBlockForConstruct.get();
}
bool isGeneratedForCall() const
{
return m_codeBlockForCall;
}
FunctionCodeBlock* codeBlockForCall()
{
return m_codeBlockForCall.get();
}
bool isGeneratedForConstruct() const
{
return m_codeBlockForConstruct;
}
FunctionCodeBlock* codeBlockForConstruct()
{
return m_codeBlockForConstruct.get();
}
bool isGeneratedFor(CodeSpecializationKind kind)
{
if (kind == CodeForCall)
return isGeneratedForCall();
ASSERT(kind == CodeForConstruct);
return isGeneratedForConstruct();
}
FunctionCodeBlock* codeBlockFor(CodeSpecializationKind kind)
{
if (kind == CodeForCall)
return codeBlockForCall();
ASSERT(kind == CodeForConstruct);
return codeBlockForConstruct();
}
FunctionCodeBlock* baselineCodeBlockFor(CodeSpecializationKind);
FunctionCodeBlock* profiledCodeBlockFor(CodeSpecializationKind kind)
{
return baselineCodeBlockFor(kind);
}
FunctionMode functionMode() { return m_unlinkedExecutable->functionMode(); }
bool isBuiltinFunction() const { return m_unlinkedExecutable->isBuiltinFunction(); }
const Identifier& name() { return m_unlinkedExecutable->name(); }
const Identifier& inferredName() { return m_unlinkedExecutable->inferredName(); }
JSString* nameValue() const { return m_unlinkedExecutable->nameValue(); }
size_t parameterCount() const { return m_unlinkedExecutable->parameterCount(); } // Excluding 'this'!
String paramString() const;
SymbolTable* symbolTable(CodeSpecializationKind);
void clearCodeIfNotCompiling();
void clearUnlinkedCodeForRecompilationIfNotCompiling();
static void visitChildren(JSCell*, SlotVisitor&);
static Structure* createStructure(VM& vm, JSGlobalObject* globalObject, JSValue proto)
{
return Structure::create(vm, globalObject, proto, TypeInfo(FunctionExecutableType, StructureFlags), info());
}
DECLARE_INFO;
void unlinkCalls();
void clearCode();
bool bodyIncludesBraces() const { return m_bodyIncludesBraces; }
private:
FunctionExecutable(VM&, const SourceCode&, UnlinkedFunctionExecutable*, unsigned firstLine, unsigned lastLine, unsigned startColumn, unsigned endColumn, bool bodyIncludesBraces);
bool isCompiling()
{
#if ENABLE(JIT)
if (!m_jitCodeForCall && m_codeBlockForCall)
return true;
if (!m_jitCodeForConstruct && m_codeBlockForConstruct)
return true;
#endif
return false;
}
friend class ScriptExecutable;
static const unsigned StructureFlags = OverridesVisitChildren | ScriptExecutable::StructureFlags;
WriteBarrier<UnlinkedFunctionExecutable> m_unlinkedExecutable;
RefPtr<FunctionCodeBlock> m_codeBlockForCall;
RefPtr<FunctionCodeBlock> m_codeBlockForConstruct;
bool m_bodyIncludesBraces;
bool m_didParseForTheFirstTime;
};
inline void ExecutableBase::clearCodeVirtual(ExecutableBase* executable)
{
switch (executable->type()) {
case EvalExecutableType:
return jsCast<EvalExecutable*>(executable)->clearCode();
case ProgramExecutableType:
return jsCast<ProgramExecutable*>(executable)->clearCode();
case FunctionExecutableType:
return jsCast<FunctionExecutable*>(executable)->clearCode();
default:
return jsCast<NativeExecutable*>(executable)->clearCode();
}
}
inline void ScriptExecutable::unlinkCalls()
{
switch (type()) {
case EvalExecutableType:
return jsCast<EvalExecutable*>(this)->unlinkCalls();
case ProgramExecutableType:
return jsCast<ProgramExecutable*>(this)->unlinkCalls();
case FunctionExecutableType:
return jsCast<FunctionExecutable*>(this)->unlinkCalls();
default:
RELEASE_ASSERT_NOT_REACHED();
}
}
}
#endif