There is a disclosed a multi-processing arrangement in which processes running on one processor may utilize processes, called stub processes, running on other processors. One problem that occurs with respect to such a system is that signals, which indicate the occurrence of external asynchronous events,...http://www.google.co.uk/patents/US5062040?utm_source=gb-gplus-sharePatent US5062040 - Handling of notification of asynchronous events by user and stub processes of a distributed process executing on a plurality of processors of a multi-processor system