Re [ARGUS] undesirable ra behaviour

[Carter Bullard]

So ra() does fork to create its filters, but it does a
few waitpid()s.  There maybe a race condition, so try this
patch:

Index: gencode.c
===================================================================
RCS file: /usr/local/cvsroot/argus-clients/common/gencode.c,v
retrieving revision 1.11
diff -r1.11 gencode.c
304c304
<       waitpid(pid, &status, WNOHANG);
---
>       waitpid(pid, &status, 0);

Carter



> From: Peter Van Epp <vanepp at sfu.ca>
> Date: Tue, 7 Sep 2004 21:06:18 -0700
> To: <argus-info at lists.andrew.cmu.edu>
> Subject: [ARGUS] undesirable ra behaviour
> 
> I haven't gotten further than "hmmm, thats undesirable, I should do
> something about that", but ra appears to be spawning zombies on FreeBSD. This
> is a perl script running ra against a month's worth of archive files one at a
> time. ra appears to be creating a zombie on every invocation. They go away
> when the script ends but the possibility of filling the process table
> presumably exists.
> 
> USER     PID  PPID  PGID   SESS JOBC STAT  TT       TIME COMMAND
> 
> vanepp   309   295   295 c2d50880    0 Z     ??    0:00.00  (ra)
> vanepp   313   295   295 c2d50880    0 Z     ??    0:00.00  (ra)
> vanepp   317   295   295 c2d50880    0 Z     ??    0:00.00  (ra)
> vanepp   321   295   295 c2d50880    0 Z     ??    0:00.00  (ra)
> vanepp   325   295   295 c2d50880    0 Z     ??    0:00.00  (ra)
> vanepp   332   295   295 c2d50880    0 Z     ??    0:00.00  (ra)
> vanepp   336   295   295 c2d50880    0 Z     ??    0:00.00  (ra)
> vanepp   340   295   295 c2d50880    0 Z     ??    0:00.00  (ra)
> vanepp   344   295   295 c2d50880    0 Z     ??    0:00.00  (ra)
> vanepp   348   295   295 c2d50880    0 Z     ??    0:00.00  (ra)
> vanepp   355   295   295 c2d50880    0 Z     ??    0:00.00  (ra)
> vanepp   359   295   295 c2d50880    0 Z     ??    0:00.00  (ra)
> vanepp   363   295   295 c2d50880    0 Z     ??    0:00.00  (ra)
> vanepp   367   295   295 c2d50880    0 Z     ??    0:00.00  (ra)
> vanepp   374   295   295 c2d50880    0 Z     ??    0:00.00  (ra)
> vanepp   378   295   295 c2d50880    0 Z     ??    0:00.00  (ra)
> vanepp   382   295   295 c2d50880    0 Z     ??    0:00.00  (ra)
> vanepp   389   295   295 c2d50880    0 Z     ??    0:00.00  (ra)
> vanepp   393   295   295 c2d50880    0 Z     ??    0:00.00  (ra)
> vanepp   397   295   295 c2d50880    0 Z     ??    0:00.00  (ra)
> vanepp   404   295   295 c2d50880    0 Z     ??    0:00.00  (ra)
> vanepp   408   295   295 c2d50880    0 Z     ??    0:00.00  (ra)
> vanepp   414   295   295 c2d50880    0 Z     ??    0:00.00  (ra)
> vanepp   421   295   295 c2d50880    0 Z     ??    0:00.00  (ra)
> vanepp   425   295   295 c2d50880    0 Z     ??    0:00.00  (ra)
> vanepp   429   295   295 c2d50880    0 Z     ??    0:00.00  (ra)
> vanepp   433   295   295 c2d50880    0 Z     ??    0:00.00  (ra)
> vanepp   437   295   295 c2d50880    0 Z     ??    0:00.00  (ra)
> vanepp   447   295   295 c2d50880    0 Z     ??    0:00.00  (ra)
> vanepp   451   295   295 c2d50880    0 Z     ??    0:00.00  (ra)
> vanepp   455   295   295 c2d50880    0 Z     ??    0:00.00  (ra)
> vanepp   459   295   295 c2d50880    0 Z     ??    0:00.00  (ra)
> vanepp   466   295   295 c2d50880    0 Z     ??    0:00.00  (ra)
> vanepp   470   295   295 c2d50880    0 Z     ??    0:00.00  (ra)
> vanepp   474   295   295 c2d50880    0 Z     ??    0:00.00  (ra)
> vanepp   481   295   295 c2d50880    0 Z     ??    0:00.00  (ra)
> vanepp   485   295   295 c2d50880    0 Z     ??    0:00.00  (ra)
> vanepp   489   295   295 c2d50880    0 Z     ??    0:00.00  (ra)
> vanepp   496   295   295 c2d50880    0 Z     ??    0:00.00  (ra)
> vanepp   500   295   295 c2d50880    0 Z     ??    0:00.00  (ra)
> vanepp   504   295   295 c2d50880    0 Z     ??    0:00.00  (ra)
> vanepp   511   295   295 c2d50880    0 Z     ??    0:00.00  (ra)
> ...
> 
> Peter Van Epp / Operations and Technical Support
> Simon Fraser University, Burnaby, B.C. Canada
> 


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