ryujinx/src/Ryujinx.Cpu/VirtualMemoryManagerRefCountedBase.cs

using Ryujinx.Memory;
using System.Diagnostics;
using System.Numerics;
using System.Threading;

namespace Ryujinx.Cpu
{
    public abstract class VirtualMemoryManagerRefCountedBase<TVirtual, TPhysical> : VirtualMemoryManagerBase<TVirtual, TPhysical>, IRefCounted
        where TVirtual : IBinaryInteger<TVirtual>
        where TPhysical : IBinaryInteger<TPhysical>
    {
        private int _referenceCount;

        public void IncrementReferenceCount()
        {
            int newRefCount = Interlocked.Increment(ref _referenceCount);

            Debug.Assert(newRefCount >= 1);
        }

        public void DecrementReferenceCount()
        {
            int newRefCount = Interlocked.Decrement(ref _referenceCount);

            Debug.Assert(newRefCount >= 0);

            if (newRefCount == 0)
            {
                Destroy();
            }
        }

        protected abstract void Destroy();
    }
}