System for managing internal execution threads

A system for managing internal execution threads in a process, the execution threads being driven by process internal event messages that are generated by event generating functions in response to occurred internal or external incidents and that are distributed to event receiving threads having priority, the distribution being controlled by an event handling function based upon distribution categories of the event generating functions and being performed only to event receiving threads that have interest in such internal event messages and cause monitoring of the occurrency thereof, the system comprising, for each distribution category:

• a number of event receiving threads,
• a number of first entities representing at least one monitoring for one event generating function to some event receiving thread,
• a number of second entities representing a monitoring for event generating functions of the distribution category, each second entity having a list of all first entities that have monitored an event receiving thread,
• a third entity for keeping track of all event receiving threads that have monitored the distribution category by means of a list of the second entities, and
• a number of event generating functions of which each keeps a list of the first entities.