/// <summary>
/// In order to add a child to this node, it must not be sealed
/// </summary>
/// <param name="reportedProcess"></param>
public void AddChildren(ProcessNode reportedProcess)
{
Contract.Assert(!IsSealed);
Contract.Requires(reportedProcess != null);
m_children.Add(reportedProcess);
}
private ProcessTree ComputeTree(IReadOnlyCollection <ReportedProcess> reportedProcesses)
{
// Process Ids can be reused, but let's assume uniqueness, just for demo purposes
var allProcessNodes = reportedProcesses.ToDictionary(proc => proc.ProcessId, proc => new ProcessNode(proc));
ProcessNode root = null;
foreach (var reportedProcess in reportedProcesses)
{
// If the parent id is part of the reported processes, update the children. Otherwise, that should be the root process
if (allProcessNodes.TryGetValue(reportedProcess.ParentProcessId, out ProcessNode parentProcessNode))
{
parentProcessNode.AddChildren(allProcessNodes[reportedProcess.ProcessId]);
}
else if (reportedProcess.ParentProcessId == 0)
{
// This case means that the parent process id could not be retrieved. Just ignore the process for sake of the demo
continue;
}
else
{
// There should be only one process that has a parent id that is not part of the set of reported processes: the main one
root = allProcessNodes[reportedProcess.ProcessId];
}
}
// Seal all nodes so children become immutable
foreach (var processNode in allProcessNodes.Values)
{
processNode.Seal();
}
Contract.Assert(root != null);
return(new ProcessTree(root));
}
/// <nodoc/>
public ProcessTree(ProcessNode root)
{
Contract.Requires(root != null);
Root = root;
}