102 lines
3.2 KiB
C++
102 lines
3.2 KiB
C++
/*
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* Copyright (C) 2016-2020 Apple Inc. All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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*
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* THIS SOFTWARE IS PROVIDED BY APPLE INC. ``AS IS'' AND ANY
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* EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
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* PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL APPLE INC. OR
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* CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
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* EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
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* PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
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* PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY
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* OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
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* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*/
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#include "config.h"
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#include "CommonVM.h"
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#include "DOMWindow.h"
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#include "Frame.h"
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#include "ScriptController.h"
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#include "WebCoreJSClientData.h"
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#include <JavaScriptCore/HeapInlines.h>
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#include <JavaScriptCore/MachineStackMarker.h>
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#include <JavaScriptCore/VM.h>
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#include <wtf/MainThread.h>
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#include <wtf/RunLoop.h>
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#include <wtf/text/AtomString.h>
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#if PLATFORM(IOS_FAMILY)
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#include "WebCoreThreadInternal.h"
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#endif
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namespace WebCore {
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JSC::VM* g_commonVMOrNull;
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JSC::VM& commonVMSlow()
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{
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ASSERT(isMainThread());
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ASSERT(!g_commonVMOrNull);
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// FIXME: Remove this call to ScriptController::initializeMainThread(). The
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// main thread should have been initialized by a WebKit entrypoint already.
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// Also, initializeMainThread() does nothing on iOS.
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ScriptController::initializeMainThread();
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#if PLATFORM(IOS_FAMILY)
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RunLoop* runLoop = RunLoop::webIfExists();
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#else
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RunLoop* runLoop = nullptr;
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#endif
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auto& vm = JSC::VM::create(JSC::LargeHeap, runLoop).leakRef();
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g_commonVMOrNull = &vm;
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vm.heap.acquireAccess(); // At any time, we may do things that affect the GC.
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#if PLATFORM(IOS_FAMILY)
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if (WebThreadIsEnabled())
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vm.apiLock().makeWebThreadAware();
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vm.heap.machineThreads().addCurrentThread();
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#endif
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JSVMClientData::initNormalWorld(&vm, WorkerThreadType::Main);
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return vm;
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}
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Frame* lexicalFrameFromCommonVM()
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{
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JSC::VM& vm = commonVM();
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if (auto* topCallFrame = vm.topCallFrame) {
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if (auto* globalObject = JSC::jsCast<JSDOMGlobalObject*>(topCallFrame->lexicalGlobalObject(vm))) {
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if (auto* window = JSC::jsDynamicCast<JSDOMWindow*>(vm, globalObject)) {
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if (auto* frame = window->wrapped().frame())
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return frame;
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}
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}
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}
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return nullptr;
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}
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void addImpureProperty(const AtomString& propertyName)
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{
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commonVM().addImpureProperty(propertyName.impl());
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}
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} // namespace WebCore
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