AtomicLoopStateUpdate() [2/2]

bool System.Threading.Tasks.ParallelLoopStateFlags.AtomicLoopStateUpdate ( int newState, int illegalStates, ref int oldState )

inlinepackageinherited

Definition at line 15 of file ParallelLoopStateFlags.cs.

    {
        SpinWait spinWait = default(SpinWait);
        while (true)
        {
            oldState = _loopStateFlags;
            if ((oldState & illegalStates) != 0)
            {
                return false;
            }
            if (Interlocked.CompareExchange(ref _loopStateFlags, oldState | newState, oldState) == oldState)
            {
                break;
            }
            spinWait.SpinOnce();
        }
        return true;
    }

References System.Threading.Tasks.ParallelLoopStateFlags._loopStateFlags, System.Threading.Interlocked.CompareExchange(), and System.Threading.SpinWait.SpinOnce().