/* * 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; auto locker = holdLock(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)