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/*
* Copyright (C) 2017-2022 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 "WebCoreJSClientData.h"
#include "DOMGCOutputConstraint.h"
#include "DocumentInlines.h"
#include "ExtendedDOMClientIsoSubspaces.h"
#include "ExtendedDOMIsoSubspaces.h"
#include "JSAudioWorkletGlobalScope.h"
#include "JSDOMBinding.h"
#include "JSDOMBuiltinConstructorBase.h"
#include "JSDOMWindowProperties.h"
#include "JSDedicatedWorkerGlobalScope.h"
#include "JSIDBSerializationGlobalObject.h"
#include "JSLocalDOMWindow.h"
#include "JSObservableArray.h"
#include "JSPaintWorkletGlobalScope.h"
#include "JSRemoteDOMWindow.h"
#include "JSServiceWorkerGlobalScope.h"
#include "JSShadowRealmGlobalScope.h"
#include "JSSharedWorkerGlobalScope.h"
#include "JSWindowProxy.h"
#include "JSWorkerGlobalScope.h"
#include "JSWorkletGlobalScope.h"
#include <JavaScriptCore/FastMallocAlignedMemoryAllocator.h>
#include <JavaScriptCore/HeapInlines.h>
#include <JavaScriptCore/IsoHeapCellType.h>
#include <JavaScriptCore/JSDestructibleObjectHeapCellType.h>
#include <JavaScriptCore/MarkingConstraint.h>
#include <JavaScriptCore/SubspaceInlines.h>
#include <JavaScriptCore/VM.h>
#include "runtime_array.h"
#include "runtime_method.h"
#include "runtime_object.h"
#include <mutex>
#include <wtf/MainThread.h>
namespace WebCore {
using namespace JSC;
DEFINE_ALLOCATOR_WITH_HEAP_IDENTIFIER(JSHeapData);
JSHeapData::JSHeapData(Heap& heap)
: m_runtimeArrayHeapCellType(JSC::IsoHeapCellType::Args<RuntimeArray>())
, m_observableArrayHeapCellType(JSC::IsoHeapCellType::Args<JSObservableArray>())
, m_runtimeObjectHeapCellType(JSC::IsoHeapCellType::Args<JSC::Bindings::RuntimeObject>())
, m_windowProxyHeapCellType(JSC::IsoHeapCellType::Args<JSWindowProxy>())
, m_heapCellTypeForJSLocalDOMWindow(JSC::IsoHeapCellType::Args<JSLocalDOMWindow>())
, m_heapCellTypeForJSDedicatedWorkerGlobalScope(JSC::IsoHeapCellType::Args<JSDedicatedWorkerGlobalScope>())
, m_heapCellTypeForJSRemoteDOMWindow(JSC::IsoHeapCellType::Args<JSRemoteDOMWindow>())
, m_heapCellTypeForJSWorkerGlobalScope(JSC::IsoHeapCellType::Args<JSWorkerGlobalScope>())
, m_heapCellTypeForJSSharedWorkerGlobalScope(JSC::IsoHeapCellType::Args<JSSharedWorkerGlobalScope>())
, m_heapCellTypeForJSShadowRealmGlobalScope(JSC::IsoHeapCellType::Args<JSShadowRealmGlobalScope>())
#if ENABLE(SERVICE_WORKER)
, m_heapCellTypeForJSServiceWorkerGlobalScope(JSC::IsoHeapCellType::Args<JSServiceWorkerGlobalScope>())
#endif
, m_heapCellTypeForJSWorkletGlobalScope(JSC::IsoHeapCellType::Args<JSWorkletGlobalScope>())
#if ENABLE(CSS_PAINTING_API)
, m_heapCellTypeForJSPaintWorkletGlobalScope(JSC::IsoHeapCellType::Args<JSPaintWorkletGlobalScope>())
#endif
#if ENABLE(WEB_AUDIO)
, m_heapCellTypeForJSAudioWorkletGlobalScope(JSC::IsoHeapCellType::Args<JSAudioWorkletGlobalScope>())
#endif
, m_heapCellTypeForJSIDBSerializationGlobalObject(JSC::IsoHeapCellType::Args<JSIDBSerializationGlobalObject>())
, m_domBuiltinConstructorSpace ISO_SUBSPACE_INIT(heap, heap.cellHeapCellType, JSDOMBuiltinConstructorBase)
, m_domConstructorSpace ISO_SUBSPACE_INIT(heap, heap.cellHeapCellType, JSDOMConstructorBase)
, m_domNamespaceObjectSpace ISO_SUBSPACE_INIT(heap, heap.cellHeapCellType, JSDOMObject)
, m_domWindowPropertiesSpace ISO_SUBSPACE_INIT(heap, heap.cellHeapCellType, JSDOMWindowProperties)
, m_runtimeArraySpace ISO_SUBSPACE_INIT(heap, m_runtimeArrayHeapCellType, RuntimeArray)
, m_observableArraySpace ISO_SUBSPACE_INIT(heap, m_observableArrayHeapCellType, JSObservableArray)
, m_runtimeMethodSpace ISO_SUBSPACE_INIT(heap, heap.cellHeapCellType, RuntimeMethod) // Hash:0xf70c4a85
, m_runtimeObjectSpace ISO_SUBSPACE_INIT(heap, m_runtimeObjectHeapCellType, JSC::Bindings::RuntimeObject)
, m_windowProxySpace ISO_SUBSPACE_INIT(heap, m_windowProxyHeapCellType, JSWindowProxy)
, m_idbSerializationSpace ISO_SUBSPACE_INIT(heap, m_heapCellTypeForJSIDBSerializationGlobalObject, JSIDBSerializationGlobalObject)
, m_subspaces(makeUnique<ExtendedDOMIsoSubspaces>())
{
}
JSHeapData* JSHeapData::ensureHeapData(Heap& heap)
{
if (!Options::useGlobalGC())
return new JSHeapData(heap);
static JSHeapData* singleton = nullptr;
static std::once_flag onceFlag;
std::call_once(onceFlag, [&] {
singleton = new JSHeapData(heap);
});
return singleton;
}
#define CLIENT_ISO_SUBSPACE_INIT(subspace) subspace(m_heapData->subspace)
DEFINE_ALLOCATOR_WITH_HEAP_IDENTIFIER(JSVMClientData);
JSVMClientData::JSVMClientData(VM& vm)
: m_builtinFunctions(vm)
, m_builtinNames(vm)
, m_heapData(JSHeapData::ensureHeapData(vm.heap))
, CLIENT_ISO_SUBSPACE_INIT(m_domBuiltinConstructorSpace)
, CLIENT_ISO_SUBSPACE_INIT(m_domConstructorSpace)
, CLIENT_ISO_SUBSPACE_INIT(m_domNamespaceObjectSpace)
, CLIENT_ISO_SUBSPACE_INIT(m_domWindowPropertiesSpace)
, CLIENT_ISO_SUBSPACE_INIT(m_runtimeArraySpace)
, CLIENT_ISO_SUBSPACE_INIT(m_observableArraySpace)
, CLIENT_ISO_SUBSPACE_INIT(m_runtimeMethodSpace)
, CLIENT_ISO_SUBSPACE_INIT(m_runtimeObjectSpace)
, CLIENT_ISO_SUBSPACE_INIT(m_windowProxySpace)
, CLIENT_ISO_SUBSPACE_INIT(m_idbSerializationSpace)
, m_clientSubspaces(makeUnique<ExtendedDOMClientIsoSubspaces>())
{
}
#undef CLIENT_ISO_SUBSPACE_INIT
JSVMClientData::~JSVMClientData()
{
m_clients.forEach([](auto& client) {
client.willDestroyVM();
});
ASSERT(m_worldSet.contains(m_normalWorld.get()));
ASSERT(m_worldSet.size() == 1);
ASSERT(m_normalWorld->hasOneRef());
m_normalWorld = nullptr;
ASSERT(m_worldSet.isEmpty());
}
void JSVMClientData::getAllWorlds(Vector<Ref<DOMWrapperWorld>>& worlds)
{
ASSERT(worlds.isEmpty());
worlds.reserveInitialCapacity(m_worldSet.size());
// It is necessary to order the `DOMWrapperWorld`s because certain callers expect the main world
// to be the first item in the list, as they use the main world as an indicator of when the page
// is ready to start evaluating JavaScript. For example, Web Inspector waits for the main world
// change to clear any injected scripts and debugger/breakpoint state.
auto& mainNormalWorld = mainThreadNormalWorld();
// Add main normal world.
if (m_worldSet.contains(&mainNormalWorld))
worlds.uncheckedAppend(mainNormalWorld);
// Add other normal worlds.
for (auto* world : m_worldSet) {
if (world->type() != DOMWrapperWorld::Type::Normal)
continue;
if (world == &mainNormalWorld)
continue;
worlds.uncheckedAppend(*world);
}
// Add non-normal worlds.
for (auto* world : m_worldSet) {
if (world->type() == DOMWrapperWorld::Type::Normal)
continue;
worlds.uncheckedAppend(*world);
}
}
void JSVMClientData::initNormalWorld(VM* vm, WorkerThreadType type)
{
JSVMClientData* clientData = new JSVMClientData(*vm);
vm->clientData = clientData; // ~VM deletes this pointer.
vm->heap.addMarkingConstraint(makeUnique<DOMGCOutputConstraint>(*vm, clientData->heapData()));
clientData->m_normalWorld = DOMWrapperWorld::create(*vm, DOMWrapperWorld::Type::Normal);
vm->m_typedArrayController = adoptRef(new WebCoreTypedArrayController(type == WorkerThreadType::DedicatedWorker || type == WorkerThreadType::Worklet));
}
String JSVMClientData::overrideSourceURL(const JSC::StackFrame& frame, const String& originalSourceURL) const
{
if (originalSourceURL.isEmpty())
return nullString();
auto* codeBlock = frame.codeBlock();
RELEASE_ASSERT(codeBlock);
auto* globalObject = codeBlock->globalObject();
if (!globalObject->inherits<JSDOMWindowBase>())
return nullString();
auto* document = jsCast<const JSDOMWindowBase*>(globalObject)->wrapped().document();
if (!document)
return nullString();
return document->maskedURLForBindingsIfNeeded(URL(originalSourceURL)).string();
}
} // namespace WebCore
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