13.9 D. Tracing

“ptrace” (4164) implements the “ptrace” system call #26.

“stop” (4016) is called by “issig” (3999) for a process which is being traced to allow the supervising parent to have a “look-see”.

“procxmt” (4204) is a procedure called from “stop” (4028) whereby the child carries out certain operations related to tracing, at the behest of the parent.