[rrd-developers] Re: Developing against librrd

[domi at dcs.net]

Hi David, Hi List !!!

Try ripping off the "
You can also skip the first argument "./rrdpoll"
because rrdtool do not need it (that's the reason
why the args are passed &args[1]).
This is how I did and it works perfect !!!

   char *args[5];
   
   args[0] = "fetch";
   args[1] = db;
   args[2] = "MAX";
   args[3] = str_start;
   args[4] = str_end;
   
   rrd_fetch(5, args, &stime, &etime, &step, &rscount, &sources, &data);
   
=d0Mi=

> ---- Original Message -----
> Date: 22-Jan-2003 22:00:41 +0100
> From: David Olsen <lude at linuxpimpz.com>
> To:  <rrd-developers at list.ee.ethz.ch>
> Subject: [rrd-developers] Developing against librrd
> 
> Hey all,
> 
> I'm trying to write a snmp poller in C that will use RRD as its data storage
format, however I've run into nothing but troubles.
> 
> If i "fake" and argv[] style array to pass to rrd_create, like so:
>     char *args[]={  "./rrdpoll",
>                     "create>                     "test2.rrd>                     "--start=1043194325>                     "DS:ifInOctets:COUNTER:600:U:U>                     "DS:ifOutOctets:COUNTER:600:U:U>                     "DS:ifInUcastPkts:COUNTER:600:U:U>                     "DS:ifOutUcastPkts:COUNTER:600:U:U>                     "DS:ifInErrors:COUNTER:600:U:U>                     "RRA:AVERAGE:0.5:1:600>                     "RRA:AVERAGE:0.5:6:700>                     "RRA:AVERAGE:0.5:24:775>                     "RRA:AVERAGE:0.5:288:797>                     "RRA:MAX:0.5:1:600>                     "RRA:MAX:0.5:6:700>                     "RRA:MAX:0.5:24:775>                     "RRA:MAX:0.5:288:797>                     0 };
> 
> and call it like this:
> 
>     printf("Making test2.rrd: %dn", rrd_create(16,&args[1]));
> 
> I get a bus error backtracing like so:
> (gdb) bt
> #0  0x2826dcc0 in strtok_r () from /usr/lib/libc_r.so.4
> #1  0x2826dd0d in strtok () from /usr/lib/libc_r.so.4
> #2  0x281c4893 in rrd_create (argc=16, argv=0xbfbffa2c) at
rrd_create.c:182
> #3  0x80495f0 in createrrd (argv=0xbfbffb74) at rrdpoll.c:179
> #4  0x80494b8 in main (argc=14, argv=0xbfbffb74) at rrdpoll.c:32
> #5  0x8048b5a in _start ()
> 
> Anyone have any suggestions?
> 
> Best Regards, 
> 
> David Olsen
> ISPrime, Inc.
> 866.502.4678 ext. 87
> AIM: Dave ISPrime - ICQ: 136633378
> 
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