/// <summary>Adds a target to the registry.</summary>
/// <param name="target">The target to add.</param>
/// <param name="linkOptions">The link options.</param>
internal void Add(ref ITargetBlock <T> target, DataflowLinkOptions linkOptions)
{
Contract.Requires(target != null, "The target that is supposed to be linked must not be null.");
Contract.Requires(linkOptions != null, "The link options must not be null.");
LinkedTargetInfo targetInfo;
// If the target already exists in the registry, replace it with a new NopLinkPropagator to maintain uniqueness
if (_targetInformation.TryGetValue(target, out targetInfo))
{
target = new NopLinkPropagator(_owningSource, target);
}
// Add the target to both stores, the list and the dictionary, which are used for different purposes
var node = new LinkedTargetInfo(target, linkOptions);
AddToList(node, linkOptions.Append);
_targetInformation.Add(target, node);
// Increment the optimization counter if needed
Contract.Assert(_linksWithRemainingMessages >= 0, "_linksWithRemainingMessages must be non-negative at any time.");
if (node.RemainingMessages > 0)
{
_linksWithRemainingMessages++;
}
#if FEATURE_TRACING
DataflowEtwProvider etwLog = DataflowEtwProvider.Log;
if (etwLog.IsEnabled())
{
etwLog.DataflowBlockLinking(_owningSource, target);
}
#endif
}
/// <summary>Initializes the debug view.</summary>
/// <param name="passthrough">The passthrough to view.</param>
public DebugView(NopLinkPropagator passthrough)
{
Contract.Requires(passthrough != null, "Need a propagator with which to construct the debug view.");
_passthrough = passthrough;
}
/// <summary>Initializes the debug view.</summary>
/// <param name="passthrough">The passthrough to view.</param>
public DebugView(NopLinkPropagator passthrough)
{
Debug.Assert(passthrough != null, "Need a propagator with which to construct the debug view.");
_passthrough = passthrough;
}