Why does Interlocked.Exchange not support Boolean type?

Question

Is there some practical reason why the .NET team decided not to support Boolean in Interlocked.Exchange operation?

One of the usage examples is when you want to guarantee

Answer 1

Not answering the question, but as a workaround you can just use int instead of bool the way C does.

    int m_IsFirstTime = 1; // 1 means true 0 means false. 

    void SomeMethod()
    {
        if (1 == Interlocked.Exchange(ref m_IsFirstTime , 0))
            // Do something for the first time.

        else
            // Do something for all other times.

    }

P.S. If there is evidence that read is faster than write then Interlocked.CompareExchange might be better for this case (only one first time and I assume a lot of non first).