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/*
* Copyright (C) 2019-2023 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
#include "PCToCodeOriginMap.h"
#include <wtf/Box.h>
#include <wtf/HashSet.h>
#include <wtf/Lock.h>
#include <wtf/TZoneMalloc.h>
namespace JSC {
class NativeCallee;
class NativeCalleeRegistry {
WTF_MAKE_TZONE_ALLOCATED(NativeCalleeRegistry);
WTF_MAKE_NONCOPYABLE(NativeCalleeRegistry);
public:
static void initialize();
static NativeCalleeRegistry& singleton();
Lock& getLock() WTF_RETURNS_LOCK(m_lock) { return m_lock; }
void registerCallee(NativeCallee* callee)
{
Locker locker { m_lock };
auto addResult = m_calleeSet.add(callee);
ASSERT_UNUSED(addResult, addResult.isNewEntry);
}
void unregisterCallee(NativeCallee* callee)
{
Locker locker { m_lock };
m_calleeSet.remove(callee);
#if ENABLE(JIT)
m_pcToCodeOriginMaps.remove(callee);
#endif
}
const UncheckedKeyHashSet<NativeCallee*>& allCallees() WTF_REQUIRES_LOCK(m_lock)
{
return m_calleeSet;
}
bool isValidCallee(NativeCallee* callee) WTF_REQUIRES_LOCK(m_lock)
{
if (!UncheckedKeyHashSet<NativeCallee*>::isValidValue(callee))
return false;
return m_calleeSet.contains(callee);
}
#if ENABLE(JIT)
void addPCToCodeOriginMap(NativeCallee* callee, Box<PCToCodeOriginMap> originMap)
{
Locker locker { m_lock };
ASSERT(isValidCallee(callee));
auto addResult = m_pcToCodeOriginMaps.add(callee, WTFMove(originMap));
RELEASE_ASSERT(addResult.isNewEntry);
}
Box<PCToCodeOriginMap> codeOriginMap(NativeCallee* callee) WTF_REQUIRES_LOCK(m_lock)
{
ASSERT(isValidCallee(callee));
auto iter = m_pcToCodeOriginMaps.find(callee);
if (iter != m_pcToCodeOriginMaps.end())
return iter->value;
return nullptr;
}
#endif
NativeCalleeRegistry() = default;
private:
Lock m_lock;
UncheckedKeyHashSet<NativeCallee*> m_calleeSet WTF_GUARDED_BY_LOCK(m_lock);
#if ENABLE(JIT)
UncheckedKeyHashMap<NativeCallee*, Box<PCToCodeOriginMap>> m_pcToCodeOriginMaps WTF_GUARDED_BY_LOCK(m_lock);
#endif
};
} // namespace JSC
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