/// <summary>
/// Cancels the current set of <see cref="CancellationToken"/> (if there are any token objects on issue) and starts a new set.
/// </summary>
/// <param name="pParentContext">Context for trace messages.</param>
/// <remarks>
/// The <see cref="Count"/> is reset to zero.
/// </remarks>
public void Cancel(cTrace.cContext pParentContext)
{
var lContext = pParentContext.NewMethod(nameof(cCancellationManager), nameof(Cancel));
if (mDisposed)
{
throw new ObjectDisposedException(nameof(cCancellationManager));
}
lock (mCurrentCancellationSetLock)
{
if (mCurrentCancellationSet.Count == 0)
{
return;
}
mCurrentCancellationSet.Cancel();
mCurrentCancellationSet = new cCancellationSet(mCountChanged);
mCountChanged?.Invoke(lContext);
}
}
/// <summary>
/// Initialises a new instance with the specified callback to be used when <see cref="Count"/> changes.
/// </summary>
/// <param name="pCountChanged"></param>
public cCancellationManager(Action <cTrace.cContext> pCountChanged)
{
mCountChanged = pCountChanged;
mCurrentCancellationSet = new cCancellationSet(mCountChanged);
}
/// <summary>
/// Initialises a new instance.
/// </summary>
public cCancellationManager()
{
mCountChanged = null;
mCurrentCancellationSet = new cCancellationSet(null);
}
