5. An extended semaphore mechanism as recited in claim 4 including eighth means responsive to said sixth means for detecting on behalf of any of said second processes the occurrence as specified by said eighth means.
5. An extended semaphore mechanism as recited in claim 4 including eighth means responsive to said sixth means for detecting on behalf of any of said second processes the occurrence as specified by said eighth means. 6. An extended semaphore mechanism as recited in claim 5 including ninth means responsive to said seventh means for executing the reaction specified by said seventh means.