private StopInstruction Stop(FiberStatus finalStatus)
{
// Interlocked isn't necessary because we don't need
// the initial value (stops are final). They are also
// only called by the scheduler thread during Execute().
status = (int)finalStatus;
FinishCompletion();
return(FiberInstruction.Stop);
}
/// <summary>
/// Invokes the Fiber Action.
/// </summary>
/// <param name="fiber">the fiber computation.</param>
private void InvokeAction(IComputation fiber)
{
object result = fiber.Execute();
FiberStatus fiberStatus = (FiberStatus)result;
if (fiberStatus == FiberStatus.Done)
{
scheduler.Remove(fiber);
}
}
/// <summary>
/// Executes the given computation.
/// </summary>
/// <returns></returns>
object IComputation.Execute()
{
try
{
if (fiberContext.MoveNext() == true && status != FiberStatus.Wait)
{
status = fiberContext.Current;
return(status);
}
else if (status == FiberStatus.Wait)
{
status = FiberStatus.Switch;
return(status);
}
else
{
status = FiberStatus.Done;
Cookie.Completed = true;
//Internal computation doesn't need to set the event.
if (!isInternalComputation && wait != null)
{
wait.Set();
}
}
return(status);
}
catch (Exception ex)
{
Cookie.IsException = true;
Cookie.Exception = ex;
if (wait != null)
{
wait.Set();
}
return(FiberStatus.Done);
}
}
private StopInstruction Stop(FiberStatus finalStatus)
{
// Interlocked isn't necessary because we don't need
// the initial value (stops are final). They are also
// only called by the scheduler thread during Execute().
status = (int)finalStatus;
FinishCompletion ();
return FiberInstruction.Stop;
}
