/// <summary>You must call Disable on the reporter output if it's not null when you are done with it. It will NOT clean itself.
/// You should call Dispose on the terminator if it's not null, because that will keep it alive for the time of the computation.</summary>
internal static void MarshalProgressAndCancelToken(System.Threading.CancellationToken cancel, IProgress <double> progress,
out IntPtr ptrTerminator, out int progressInt, out ProgressReporter reporter, out ThreadTerminator terminator)
{
reporter = null;
progressInt = 0;
if (progress != null)
{
reporter = new ProgressReporter(progress);
progressInt = reporter.SerialNumber;
reporter.Enable();
}
terminator = null;
if (cancel != System.Threading.CancellationToken.None)
{
terminator = new ThreadTerminator();
cancel.Register(terminator.RequestCancel);
}
ptrTerminator = terminator == null ? IntPtr.Zero : terminator.NonConstPointer();
}
