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/*
* Copyright (C) 2024 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 <wtf/AbstractRefCounted.h>
#include <wtf/ThreadSafeWeakPtr.h>
namespace WTF {
class AbstractThreadSafeRefCountedAndCanMakeWeakPtr : public AbstractRefCounted {
public:
virtual ThreadSafeWeakPtrControlBlock& controlBlock() const = 0;
private:
template<typename> friend class ThreadSafeWeakHashSet;
virtual size_t weakRefCount() const = 0;
};
}
using WTF::AbstractThreadSafeRefCountedAndCanMakeWeakPtr;
// Convinience macro that implements AbstractThreadSafeRefCountedAndCanMakeWeakPtr for you.
#define WTF_ABSTRACT_THREAD_SAFE_REF_COUNTED_AND_CAN_MAKE_WEAK_PTR_IMPL \
void ref() const final { ThreadSafeRefCountedAndCanMakeThreadSafeWeakPtr::ref(); } \
void deref() const final { ThreadSafeRefCountedAndCanMakeThreadSafeWeakPtr::deref(); } \
ThreadSafeWeakPtrControlBlock& controlBlock() const final { return ThreadSafeRefCountedAndCanMakeThreadSafeWeakPtr::controlBlock(); } \
size_t weakRefCount() const final { return ThreadSafeRefCountedAndCanMakeThreadSafeWeakPtr::weakRefCount(); } \
using __Unused_type_for_semicolon = int
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