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- From: ihnp4!iwtpu!katzung (Brian Katzung)
- Date: Sat, 8 Nov 86 14:59:33 CST
-
- I guess I'm being sort of lazy... I haven't even figured out the
- relationship between "P1003" and "POSIX" (I got in late on the discussion),
- [ IEEE P1003 is the committee; P1003.1 is the subcommittee that produced
- the POSIX Trial Use Standard. -mod ]
- but I wanted to point out one shortcoming of the 4.xBSD implementation of
- job control so that it might be avoided in the future.
-
- The wait3 system call has provisions for informing the parent when a
- child is suspended, but not when it resumes. Thus, if an agent other than
- the parent resumes the child, the parent doesn't know about it. This is
- rare, but not unimaginable. I've had applications that could have been
- enhanced if the mechanism were "balanced".
-
- I haven't checked 4.3, but the 4.2 csh, in particular, won't send a
- STOP or TSTP to a process that it believes is already stopped.
- -- Brian Katzung ihnp4!{laidbak,iwtpu}!katzung
-
- Volume-Number: Volume 8, Number 51
-
-