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/*
* Copyright (C) 2020-2021 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 "MarkedJSValueRefArray.h"
#include "JSCJSValue.h"
WTF_ALLOW_UNSAFE_BUFFER_USAGE_BEGIN
namespace JSC {
MarkedJSValueRefArray::MarkedJSValueRefArray(JSGlobalContextRef context, unsigned size)
: m_size(size)
{
if (m_size > MarkedArgumentBuffer::inlineCapacity) {
m_buffer = makeUniqueArray<JSValueRef>(m_size);
toJS(context)->vm().heap.addMarkedJSValueRefArray(this);
ASSERT(isOnList());
}
}
MarkedJSValueRefArray::~MarkedJSValueRefArray()
{
if (isOnList())
remove();
}
template<typename Visitor>
void MarkedJSValueRefArray::visitAggregate(Visitor& visitor)
{
JSValueRef* buffer = data();
for (unsigned index = 0; index < m_size; ++index) {
JSValueRef value = buffer[index];
#if !CPU(ADDRESS64)
JSCell* jsCell = reinterpret_cast<JSCell*>(const_cast<OpaqueJSValue*>(value));
if (!jsCell)
continue;
visitor.appendUnbarriered(jsCell); // We should mark the wrapper itself to keep JSValueRef live.
#else
visitor.appendUnbarriered(std::bit_cast<JSValue>(value));
#endif
}
}
template void MarkedJSValueRefArray::visitAggregate(AbstractSlotVisitor&);
template void MarkedJSValueRefArray::visitAggregate(SlotVisitor&);
} // namespace JSC
WTF_ALLOW_UNSAFE_BUFFER_USAGE_END
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