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/*
* Copyright (C) 2016-2017 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.
*/
#include "config.h"
#include "CommonVM.h"
#include "Frame.h"
#include "ScriptController.h"
#include "Settings.h"
#include "WebCoreJSClientData.h"
#include <heap/HeapInlines.h>
#include "heap/MachineStackMarker.h"
#include <runtime/VM.h>
#include <wtf/MainThread.h>
#include <wtf/text/AtomicString.h>
#if PLATFORM(IOS)
#include "WebCoreThreadInternal.h"
#endif
using namespace JSC;
namespace WebCore {
VM* g_commonVMOrNull;
VM& commonVMSlow()
{
ASSERT(isMainThread());
ASSERT(!g_commonVMOrNull);
ScriptController::initializeThreading();
g_commonVMOrNull = &VM::createLeaked(LargeHeap).leakRef();
g_commonVMOrNull->heap.acquireAccess(); // At any time, we may do things that affect the GC.
#if PLATFORM(IOS)
g_commonVMOrNull->setRunLoop(WebThreadRunLoop());
g_commonVMOrNull->heap.machineThreads().addCurrentThread();
#endif
g_commonVMOrNull->setGlobalConstRedeclarationShouldThrow(Settings::globalConstRedeclarationShouldThrow());
JSVMClientData::initNormalWorld(g_commonVMOrNull);
return *g_commonVMOrNull;
}
Frame* lexicalFrameFromCommonVM()
{
if (auto* topCallFrame = commonVM().topCallFrame) {
if (auto* globalObject = JSC::jsCast<JSDOMGlobalObject*>(topCallFrame->lexicalGlobalObject())) {
if (auto* window = jsDynamicDowncast<JSDOMWindow*>(commonVM(), globalObject)) {
if (auto* frame = window->wrapped().frame())
return frame;
}
}
}
return nullptr;
}
void addImpureProperty(const AtomicString& propertyName)
{
commonVM().addImpureProperty(propertyName);
}
} // namespace WebCore
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