From: jarausch@igpm.rwth-aachen.de
To: pws@csr.com
Cc: zsh-workers@sunsite.dk
Subject: Re: ulimit strangeness
Date: Fri, 15 Nov 2002 13:57:18 +0100 [thread overview]
Message-ID: <200211151257.NAA47648@numa1.igpm.rwth-aachen.de> (raw)
In-Reply-To: <23083.1037361354@csr.com>
On 15 Nov, Peter Stephenson wrote:
> "Bart Schaefer" wrote:
>> zsh% ulimit -v $[200*1024]; limit
>> cputime unlimited
>> filesize unlimited
>> datasize unlimited
>> stacksize 8MB
>> coredumpsize unlimited
>> memoryuse unlimited
>> maxproc 2040
>> descriptors 1024
>> memorylocked unlimited
>> addressspace 200kB <-- Note, not 200 megabytes!
>>
>> It looks like this has something to do with the convoluted #ifdef that
>> prevents duplicate case labels in rlimits.c when both RLIMIT_RSS and
>> RLIMIT_VMEM are defined, but I haven't yet figured out what to fix.
>
> My guess is the test `RLIMIT_RSS != RLIMIT_VMEM' is incorrectly failing
> in the preprocessor, i.e. it thinks RLIMIT_RSS == RLIMIT_VMEM owing to
> the way the definitions are laid out. Checking
> /usr/include/sys/resource.h or carefully hidden equivalent should
> confirm or refute this. The following programme might help.
>
> #include <stdio.h>
> #include <sys/resource.h>
>
> int main(int argc, char **argv)
> {
> #if defined(RLIMIT_RSS) && defined(RLIMIT_VMEM)
> printf("You have both definitions.\n");
> if (RLIMIT_RSS == RLIMIT_VMEM)
> {
> printf("Both have the same value.\n");
> }
> else
> {
> printf("They have different values.\n");
> #if RLIMIT_RSS == RLIMIT_VMEM
> printf("!!!You should never see this message!!!\n");
> #endif
> }
> #else
> #ifdef RLIMIT_RSS
> printf("You only have RSS\n");
> #else
> #ifdef RLIMIT_VMEM
> printf("You only have VMEM\n");
> #else
> printf("You have neither definition.\n");
> #endif
> #endif
> #endif
>
> return 0;
> }
>
> We could probe this more reliably than at present in configure.
>
Here on my machine (Linux-From-Scratch 2.4.20-rc1 glibc 2.2.5) I get
You only have RSS.
Thanks,
Helmut Jarausch
Lehrstuhl fuer Numerische Mathematik
Aachen University
D 52056 Aachen, Germany
next prev parent reply other threads:[~2002-11-15 12:57 UTC|newest]
Thread overview: 4+ messages / expand[flat|nested] mbox.gz Atom feed top
[not found] <1021114164332.ZM7641@candle.brasslantern.com>
2002-11-15 11:55 ` Peter Stephenson
2002-11-15 12:57 ` jarausch [this message]
2002-11-16 3:13 ` Bart Schaefer
2002-11-18 10:31 ` Peter Stephenson
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