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From: schoch@ames.arpa (Steve Schoch)
Newsgroups: comp.unix.questions
Subject: Re: Fork and Join, Pipe in C
Message-ID: <1882@ames.arpa>
Date: Tue, 23-Jun-87 20:25:43 EDT
Article-I.D.: ames.1882
Posted: Tue Jun 23 20:25:43 1987
Date-Received: Thu, 25-Jun-87 04:17:25 EDT
References: <7737@brl-adm.ARPA> <1186@ius2.cs.cmu.edu> <8174@utzoo.UUCP> <3714@spool.WISC.EDU> <21731@sun.uucp>
Reply-To: schoch@ames.UUCP (Steve Schoch)
Organization: NASA Ames Research Center, Moffett Field, Calif.
Lines: 12

In article <21731@sun.uucp> guy%gorodish@Sun.COM (Guy Harris) writes:
>  There is very little you can do with the (temporarily) shared
>memory you get from "vfork", and in most, if not all, cases, you can
>do the same thing just as well without it.

Try the built-in command "hashstat" in csh.  It's to be used mostly for
debugging, I assume, as it tells you how well the exec hash table is working.
The way it counts a "miss" is by incrementing a variable everytime a exec
fails.  It has to do this in the child, and thus uses the vfork "shared
memory".

	Steve