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/*
* Copyright (C) 2013-2021 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 "JSArrayBuffer.h"
#include "JSCInlines.h"
#include "TypedArrayController.h"
namespace JSC {
const ClassInfo JSArrayBuffer::s_info = { "ArrayBuffer"_s, &Base::s_info, nullptr, nullptr, CREATE_METHOD_TABLE(JSArrayBuffer) };
JSArrayBuffer::JSArrayBuffer(VM& vm, Structure* structure, RefPtr<ArrayBuffer>&& arrayBuffer)
: Base(vm, structure)
, m_impl(arrayBuffer.get())
{
}
void JSArrayBuffer::finishCreation(VM& vm, JSGlobalObject* globalObject)
{
Base::finishCreation(vm);
// This probably causes GCs in the various VMs to overcount the impact of the array buffer.
vm.heap.addReference(this, impl());
vm.m_typedArrayController->registerWrapper(globalObject, impl(), this);
}
JSArrayBuffer* JSArrayBuffer::create(
VM& vm, Structure* structure, RefPtr<ArrayBuffer>&& buffer)
{
JSArrayBuffer* result =
new (NotNull, allocateCell<JSArrayBuffer>(vm))
JSArrayBuffer(vm, structure, WTFMove(buffer));
result->finishCreation(vm, structure->globalObject());
return result;
}
Structure* JSArrayBuffer::createStructure(
VM& vm, JSGlobalObject* globalObject, JSValue prototype)
{
return Structure::create(
vm, globalObject, prototype, TypeInfo(ArrayBufferType, StructureFlags), info(),
NonArray);
}
bool JSArrayBuffer::isShared() const
{
return impl()->isShared();
}
ArrayBufferSharingMode JSArrayBuffer::sharingMode() const
{
return impl()->sharingMode();
}
size_t JSArrayBuffer::estimatedSize(JSCell* cell, VM& vm)
{
JSArrayBuffer* thisObject = jsCast<JSArrayBuffer*>(cell);
size_t bufferEstimatedSize = thisObject->impl()->gcSizeEstimateInBytes();
return Base::estimatedSize(cell, vm) + bufferEstimatedSize;
}
} // namespace JSC
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