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/*
* Copyright (C) 2008 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.
*/
#include "config.h"
#include "JSGlobalData.h"
#include "ArgList.h"
#include "Collector.h"
#include "CommonIdentifiers.h"
#include "FunctionConstructor.h"
#include "Interpreter.h"
#include "JSActivation.h"
#include "JSArray.h"
#include "JSByteArray.h"
#include "JSClassRef.h"
#include "JSFunction.h"
#include "JSLock.h"
#include "JSNotAnObject.h"
#include "JSStaticScopeObject.h"
#include "Parser.h"
#include "Lexer.h"
#include "Lookup.h"
#include "Nodes.h"
#if ENABLE(JSC_MULTIPLE_THREADS)
#include <wtf/Threading.h>
#endif
#if PLATFORM(MAC)
#include "ProfilerServer.h"
#endif
using namespace WTF;
namespace JSC {
extern const HashTable arrayTable;
extern const HashTable jsonTable;
extern const HashTable dateTable;
extern const HashTable mathTable;
extern const HashTable numberTable;
extern const HashTable regExpTable;
extern const HashTable regExpConstructorTable;
extern const HashTable stringTable;
struct VPtrSet {
VPtrSet();
void* jsArrayVPtr;
void* jsByteArrayVPtr;
void* jsStringVPtr;
void* jsFunctionVPtr;
};
VPtrSet::VPtrSet()
{
// Bizarrely, calling fastMalloc here is faster than allocating space on the stack.
void* storage = fastMalloc(sizeof(CollectorBlock));
JSCell* jsArray = new (storage) JSArray(JSArray::createStructure(jsNull()));
jsArrayVPtr = jsArray->vptr();
jsArray->~JSCell();
JSCell* jsByteArray = new (storage) JSByteArray(JSByteArray::VPtrStealingHack);
jsByteArrayVPtr = jsByteArray->vptr();
jsByteArray->~JSCell();
JSCell* jsString = new (storage) JSString(JSString::VPtrStealingHack);
jsStringVPtr = jsString->vptr();
jsString->~JSCell();
JSCell* jsFunction = new (storage) JSFunction(JSFunction::createStructure(jsNull()));
jsFunctionVPtr = jsFunction->vptr();
jsFunction->~JSCell();
fastFree(storage);
}
JSGlobalData::JSGlobalData(bool isShared, const VPtrSet& vptrSet)
: isSharedInstance(isShared)
, clientData(0)
, arrayTable(fastNew<HashTable>(JSC::arrayTable))
, dateTable(fastNew<HashTable>(JSC::dateTable))
, jsonTable(fastNew<HashTable>(JSC::jsonTable))
, mathTable(fastNew<HashTable>(JSC::mathTable))
, numberTable(fastNew<HashTable>(JSC::numberTable))
, regExpTable(fastNew<HashTable>(JSC::regExpTable))
, regExpConstructorTable(fastNew<HashTable>(JSC::regExpConstructorTable))
, stringTable(fastNew<HashTable>(JSC::stringTable))
, activationStructure(JSActivation::createStructure(jsNull()))
, interruptedExecutionErrorStructure(JSObject::createStructure(jsNull()))
, staticScopeStructure(JSStaticScopeObject::createStructure(jsNull()))
, stringStructure(JSString::createStructure(jsNull()))
, notAnObjectErrorStubStructure(JSNotAnObjectErrorStub::createStructure(jsNull()))
, notAnObjectStructure(JSNotAnObject::createStructure(jsNull()))
#if !USE(ALTERNATE_JSIMMEDIATE)
, numberStructure(JSNumberCell::createStructure(jsNull()))
#endif
, jsArrayVPtr(vptrSet.jsArrayVPtr)
, jsByteArrayVPtr(vptrSet.jsByteArrayVPtr)
, jsStringVPtr(vptrSet.jsStringVPtr)
, jsFunctionVPtr(vptrSet.jsFunctionVPtr)
, identifierTable(createIdentifierTable())
, propertyNames(new CommonIdentifiers(this))
, emptyList(new MarkedArgumentBuffer)
, lexer(new Lexer(this))
, parser(new Parser)
, interpreter(new Interpreter)
#if ENABLE(JIT)
, jitStubs(this)
#endif
, heap(this)
, initializingLazyNumericCompareFunction(false)
, head(0)
, dynamicGlobalObject(0)
, scopeNodeBeingReparsed(0)
, firstStringifierToMark(0)
{
#if PLATFORM(MAC)
startProfilerServerIfNeeded();
#endif
}
JSGlobalData::~JSGlobalData()
{
// By the time this is destroyed, heap.destroy() must already have been called.
delete interpreter;
#ifndef NDEBUG
// Zeroing out to make the behavior more predictable when someone attempts to use a deleted instance.
interpreter = 0;
#endif
arrayTable->deleteTable();
dateTable->deleteTable();
jsonTable->deleteTable();
mathTable->deleteTable();
numberTable->deleteTable();
regExpTable->deleteTable();
regExpConstructorTable->deleteTable();
stringTable->deleteTable();
fastDelete(const_cast<HashTable*>(arrayTable));
fastDelete(const_cast<HashTable*>(dateTable));
fastDelete(const_cast<HashTable*>(jsonTable));
fastDelete(const_cast<HashTable*>(mathTable));
fastDelete(const_cast<HashTable*>(numberTable));
fastDelete(const_cast<HashTable*>(regExpTable));
fastDelete(const_cast<HashTable*>(regExpConstructorTable));
fastDelete(const_cast<HashTable*>(stringTable));
delete parser;
delete lexer;
deleteAllValues(opaqueJSClassData);
delete emptyList;
delete propertyNames;
deleteIdentifierTable(identifierTable);
delete clientData;
}
PassRefPtr<JSGlobalData> JSGlobalData::create(bool isShared)
{
return adoptRef(new JSGlobalData(isShared, VPtrSet()));
}
PassRefPtr<JSGlobalData> JSGlobalData::createLeaked()
{
Structure::startIgnoringLeaks();
RefPtr<JSGlobalData> data = create();
Structure::stopIgnoringLeaks();
return data.release();
}
bool JSGlobalData::sharedInstanceExists()
{
return sharedInstanceInternal();
}
JSGlobalData& JSGlobalData::sharedInstance()
{
JSGlobalData*& instance = sharedInstanceInternal();
if (!instance) {
instance = create(true).releaseRef();
#if ENABLE(JSC_MULTIPLE_THREADS)
instance->makeUsableFromMultipleThreads();
#endif
}
return *instance;
}
JSGlobalData*& JSGlobalData::sharedInstanceInternal()
{
ASSERT(JSLock::currentThreadIsHoldingLock());
static JSGlobalData* sharedInstance;
return sharedInstance;
}
// FIXME: We can also detect forms like v1 < v2 ? -1 : 0, reverse comparison, etc.
const Vector<Instruction>& JSGlobalData::numericCompareFunction(ExecState* exec)
{
if (!lazyNumericCompareFunction.size() && !initializingLazyNumericCompareFunction) {
initializingLazyNumericCompareFunction = true;
RefPtr<ProgramNode> programNode = parser->parse<ProgramNode>(exec, 0, makeSource(UString("(function (v1, v2) { return v1 - v2; })")), 0, 0);
RefPtr<FunctionBodyNode> functionBody = extractFunctionBody(programNode.get());
lazyNumericCompareFunction = functionBody->bytecode(exec->scopeChain()).instructions();
initializingLazyNumericCompareFunction = false;
}
return lazyNumericCompareFunction;
}
JSGlobalData::ClientData::~ClientData()
{
}
} // namespace JSC
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