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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.
*/
#pragma once
#if ENABLE(WEBASSEMBLY)
#include <wtf/HashSet.h>
#include <wtf/Lock.h>
namespace JSC { namespace Wasm {
class Callee;
class CalleeRegistry {
WTF_MAKE_FAST_ALLOCATED;
WTF_MAKE_NONCOPYABLE(CalleeRegistry);
public:
static void initialize();
static CalleeRegistry& singleton();
Lock& getLock() WTF_RETURNS_LOCK(m_lock) { return m_lock; }
void registerCallee(Callee* callee)
{
Locker locker { m_lock };
m_calleeSet.add(callee);
}
void unregisterCallee(Callee* callee)
{
Locker locker { m_lock };
m_calleeSet.remove(callee);
}
const HashSet<Callee*>& allCallees() WTF_REQUIRES_LOCK(m_lock)
{
return m_calleeSet;
}
bool isValidCallee(Callee* callee) WTF_REQUIRES_LOCK(m_lock)
{
if (!HashSet<Callee*>::isValidValue(callee))
return false;
return m_calleeSet.contains(callee);
}
CalleeRegistry() = default;
private:
Lock m_lock;
HashSet<Callee*> m_calleeSet WTF_GUARDED_BY_LOCK(m_lock);
};
} } // namespace JSC::Wasm
#endif // ENABLE(WEBASSEMBLY)