private bool TrySetTaskStatus(VSConstants.VsSearchTaskStatus value, VSConstants.VsSearchTaskStatus comparand)
{
var v = (long)value;
var c = (long)comparand;
return(Interlocked.CompareExchange(ref _taskStatus, v, c) == c);
}
private bool SetTaskStatus(VSConstants.VsSearchTaskStatus status)
{
if (status == Started && !TrySetTaskStatus(status, Created))
{
return(false);
}
if (status == Stopped && !TrySetTaskStatus(status, Started) && !TrySetTaskStatus(status, Created))
{
return(false);
}
if ((status == Completed || status == Error) && !TrySetTaskStatus(status, Started))
{
return(false);
}
return(_taskStatus != (long)Stopped);
}
