IntrusiveUniqueLock.h

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// Copyright Epic Games, Inc. All Rights Reserved.
 
#pragma once
 
#include "Async/IntrusiveMutex.h"
 
#include <atomic>
 
namespace UE
{
 
template <UE::CIntrusiveMutexParams ParamsType>
class TIntrusiveUniqueLock
{
    using StateType = UE::TIntrusiveMutexStateType_T<ParamsType>;
 
public:
    TIntrusiveUniqueLock(TIntrusiveUniqueLock& NoCopyConstruction) = delete;
    TIntrusiveUniqueLock& operator=(TIntrusiveUniqueLock& NoAssignment) = delete;
 
    [[nodiscard]] explicit TIntrusiveUniqueLock(std::atomic<StateType>& InState)
        : State(InState)
    {
        UE::TIntrusiveMutex<ParamsType>::Lock(State);
    }
 
    ~TIntrusiveUniqueLock()
    {
        UE::TIntrusiveMutex<ParamsType>::Unlock(State);
    }
 
private:
    std::atomic<StateType>& State;
};
 
} // namespace UE