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/*
* 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();
Locker locker { 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)
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