77 lines
3.0 KiB
C++
77 lines
3.0 KiB
C++
/*
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* Copyright (C) 2013-2021 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 "SimpleTypedArrayController.h"
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#include "ArrayBuffer.h"
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#include "JSArrayBuffer.h"
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#include "JSCJSValueInlines.h"
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#include "JSGlobalObject.h"
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namespace JSC {
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SimpleTypedArrayController::SimpleTypedArrayController(bool allowAtomicsWait)
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: m_allowAtomicsWait(allowAtomicsWait)
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{
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}
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SimpleTypedArrayController::~SimpleTypedArrayController() { }
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JSArrayBuffer* SimpleTypedArrayController::toJS(JSGlobalObject* lexicalGlobalObject, JSGlobalObject* globalObject, ArrayBuffer* native)
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{
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UNUSED_PARAM(lexicalGlobalObject);
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if (JSArrayBuffer* buffer = native->m_wrapper.get())
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return buffer;
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// The JSArrayBuffer::create function will register the wrapper in finishCreation.
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JSArrayBuffer* result = JSArrayBuffer::create(globalObject->vm(), globalObject->arrayBufferStructure(native->sharingMode()), native);
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return result;
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}
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void SimpleTypedArrayController::registerWrapper(JSGlobalObject*, ArrayBuffer* native, JSArrayBuffer* wrapper)
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{
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ASSERT(!native->m_wrapper);
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native->m_wrapper = Weak<JSArrayBuffer>(wrapper, &m_owner);
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}
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bool SimpleTypedArrayController::isAtomicsWaitAllowedOnCurrentThread()
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{
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return m_allowAtomicsWait;
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}
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bool SimpleTypedArrayController::JSArrayBufferOwner::isReachableFromOpaqueRoots(JSC::Handle<JSC::Unknown> handle, void*, JSC::AbstractSlotVisitor& visitor, const char** reason)
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{
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if (UNLIKELY(reason))
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*reason = "JSArrayBuffer is opaque root";
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auto& wrapper = *JSC::jsCast<JSC::JSArrayBuffer*>(handle.slot()->asCell());
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return visitor.containsOpaqueRoot(wrapper.impl());
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}
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void SimpleTypedArrayController::JSArrayBufferOwner::finalize(JSC::Handle<JSC::Unknown>, void*) { }
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} // namespace JSC
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