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/*
* Copyright (C) 2019 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 "WasmContext.h"
#if ENABLE(WEBASSEMBLY)
namespace JSC { namespace Wasm {
uint64_t* Context::scratchBufferForSize(size_t size)
{
if (!size)
return nullptr;
Locker locker { m_scratchBufferLock };
if (size > m_sizeOfLastScratchBuffer) {
m_sizeOfLastScratchBuffer = size * 2;
auto newBuffer = makeUniqueArray<uint64_t>(m_sizeOfLastScratchBuffer);
RELEASE_ASSERT(newBuffer);
m_scratchBuffers.append(WTFMove(newBuffer));
}
// Scanning scratch buffers for GC is not necessary since while performing OSR entry, we do not perform GC.
return m_scratchBuffers.last().get();
}
} } // namespace JSC::Wasm
#endif // ENABLE(WEBASSEMBLY)
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