/* * Copyright (C) 2016-2017 Apple Inc. All rights reserved. * Copyright (C) 2018 Yusuke Suzuki <yusukesuzuki@slowstart.org>. * * 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. */ #pragma once #if ENABLE(WEBASSEMBLY) #include "WasmSignature.h" namespace JSC { namespace Wasm { inline SignatureInformation& SignatureInformation::singleton() { std::call_once(signatureInformationFlag, [] () { theOne = new SignatureInformation; }); return *theOne; } inline const Signature& SignatureInformation::get(SignatureIndex index) { ASSERT(index != Signature::invalidIndex); return *bitwise_cast<const Signature*>(index); } inline SignatureIndex SignatureInformation::get(const Signature& signature) { if (ASSERT_ENABLED) { SignatureInformation& info = singleton(); auto locker = holdLock(info.m_lock); ASSERT_UNUSED(info, info.m_signatureSet.contains(SignatureHash { makeRef(const_cast<Signature&>(signature)) })); } return bitwise_cast<SignatureIndex>(&signature); } } } // namespace JSC::Wasm #endif // ENABLE(WEBASSEMBLY)