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/*
* Copyright (C) 2008, 2009 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.
* 3. Neither the name of Apple Computer, Inc. ("Apple") nor the names of
* its contributors may be used to endorse or promote products derived
* from this software without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY APPLE AND ITS CONTRIBUTORS "AS IS" AND ANY
* EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
* WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
* DISCLAIMED. IN NO EVENT SHALL APPLE OR ITS 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 JSGlobalData_h
#define JSGlobalData_h
#include "Collector.h"
#include "DateInstanceCache.h"
#include "ExecutableAllocator.h"
#include "JITStubs.h"
#include "JSValue.h"
#include "MarkStack.h"
#include "NumericStrings.h"
#include "SmallStrings.h"
#include "TimeoutChecker.h"
#include "WeakRandom.h"
#include <wtf/DateMath.h>
#include <wtf/Forward.h>
#include <wtf/HashMap.h>
#include <wtf/RefCounted.h>
struct OpaqueJSClass;
struct OpaqueJSClassContextData;
namespace JSC {
class CodeBlock;
class CommonIdentifiers;
class IdentifierTable;
class Interpreter;
class JSGlobalObject;
class JSObject;
class Lexer;
class Parser;
class Stringifier;
class Structure;
class UString;
struct HashTable;
struct Instruction;
struct LocalTimeOffsetCache {
LocalTimeOffsetCache()
: start(0.0)
, end(-1.0)
, increment(0.0)
{
}
void reset()
{
offset = LocalTimeOffset();
start = 0.0;
end = -1.0;
increment = 0.0;
}
LocalTimeOffset offset;
double start;
double end;
double increment;
};
class JSGlobalData : public RefCounted<JSGlobalData> {
public:
struct ClientData {
virtual ~ClientData() = 0;
#ifdef QT_BUILD_SCRIPT_LIB
virtual void mark(MarkStack&) {}
virtual void uncaughtException(ExecState*, unsigned bytecodeOffset, JSValue) = 0;
#endif
};
static bool sharedInstanceExists();
static JSGlobalData& sharedInstance();
static PassRefPtr<JSGlobalData> create();
static PassRefPtr<JSGlobalData> createLeaked();
static PassRefPtr<JSGlobalData> createNonDefault();
~JSGlobalData();
#if ENABLE(JSC_MULTIPLE_THREADS)
// Will start tracking threads that use the heap, which is resource-heavy.
void makeUsableFromMultipleThreads() { heap.makeUsableFromMultipleThreads(); }
#endif
bool isSharedInstance;
ClientData* clientData;
const HashTable* arrayTable;
const HashTable* dateTable;
const HashTable* jsonTable;
const HashTable* mathTable;
const HashTable* numberTable;
const HashTable* regExpTable;
const HashTable* regExpConstructorTable;
const HashTable* stringTable;
RefPtr<Structure> activationStructure;
RefPtr<Structure> interruptedExecutionErrorStructure;
RefPtr<Structure> staticScopeStructure;
RefPtr<Structure> stringStructure;
RefPtr<Structure> notAnObjectErrorStubStructure;
RefPtr<Structure> notAnObjectStructure;
RefPtr<Structure> propertyNameIteratorStructure;
RefPtr<Structure> getterSetterStructure;
RefPtr<Structure> apiWrapperStructure;
RefPtr<Structure> dummyMarkableCellStructure;
#if USE(JSVALUE32)
RefPtr<Structure> numberStructure;
#endif
static void storeVPtrs();
static JS_EXPORTDATA void* jsArrayVPtr;
static JS_EXPORTDATA void* jsByteArrayVPtr;
static JS_EXPORTDATA void* jsStringVPtr;
static JS_EXPORTDATA void* jsFunctionVPtr;
IdentifierTable* identifierTable;
CommonIdentifiers* propertyNames;
const MarkedArgumentBuffer* emptyList; // Lists are supposed to be allocated on the stack to have their elements properly marked, which is not the case here - but this list has nothing to mark.
SmallStrings smallStrings;
NumericStrings numericStrings;
DateInstanceCache dateInstanceCache;
#if ENABLE(ASSEMBLER)
ExecutableAllocator executableAllocator;
#endif
Lexer* lexer;
Parser* parser;
Interpreter* interpreter;
#if ENABLE(JIT)
JITThunks jitStubs;
#endif
TimeoutChecker* timeoutChecker;
Heap heap;
JSValue exception;
#if ENABLE(JIT)
ReturnAddressPtr exceptionLocation;
#endif
const Vector<Instruction>& numericCompareFunction(ExecState*);
Vector<Instruction> lazyNumericCompareFunction;
bool initializingLazyNumericCompareFunction;
HashMap<OpaqueJSClass*, OpaqueJSClassContextData*> opaqueJSClassData;
JSGlobalObject* head;
JSGlobalObject* dynamicGlobalObject;
HashSet<JSObject*> arrayVisitedElements;
CodeBlock* functionCodeBlockBeingReparsed;
Stringifier* firstStringifierToMark;
MarkStack markStack;
LocalTimeOffsetCache localTimeOffsetCache;
UString cachedDateString;
double cachedDateStringValue;
#ifndef NDEBUG
bool mainThreadOnly;
#endif
void resetDateCache();
void startSampling();
void stopSampling();
void dumpSampleData(ExecState* exec);
private:
JSGlobalData(bool isShared);
static JSGlobalData*& sharedInstanceInternal();
void createNativeThunk();
};
} // namespace JSC
#endif // JSGlobalData_h
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