AtomicStateUpdate() [4/4]

bool System.Threading.Tasks.Task< TResult >.AtomicStateUpdate ( int newBits, int illegalBits, ref int oldFlags )

inlinepackageinherited

Definition at line 1407 of file Task.cs.

    {
        int num = (oldFlags = m_stateFlags);
        while (true)
        {
            if ((num & illegalBits) != 0)
            {
                return false;
            }
            oldFlags = Interlocked.CompareExchange(ref m_stateFlags, num | newBits, num);
            if (oldFlags == num)
            {
                break;
            }
            num = oldFlags;
        }
        return true;
    }

References System.Threading.Interlocked.CompareExchange(), and System.Threading.Tasks.Task< TResult >.m_stateFlags.