> I don't know why you would be getting a segfault on this line. Gmond expects
> the array to be NULL terminated so all you are doing is adding one extra
> entry and filling it will NULLs. With the array being NULL terminated, gmond
> doesn't have to keep track of the metric count, it only has to look for a
> NULL entry.
>
More modifications- and I can't figure out where the problem is.
I tried
gmi->name=NULL
that didn't work either
Then I thought I should remove the null metric and have only one metric like:
gmi = (Ganglia_25metric*)apr_array_push(metric_info);
gmi->name= apr_pstrdup (pool,"Random_Numbers_2");
gmi->tmax=90;
gmi->type=GANGLIA_VALUE_UNSIGNED_INT;
gmi->msg_size= UDP_HEADER_SIZE+8;
gmi->units= apr_pstrdup (pool,"Num");
gmi->slope=apr_pstrdup (pool,"both");
gmi->fmt=apr_pstrdup (pool,"%u");
gmi->desc= apr_pstrdup (pool,"Example module metric (random numbers) 2");
MMETRIC_INIT_METADATA(gmi, pool);
MMETRIC_ADD_METADATA(gmi,MGROUP,"example_2");
printf ("\n First metric done");
/*
gmi = (Ganglia_25metric*)apr_array_push(metric_info);
printf ("\nStarted second metric..");
gmi->name= apr_pstrdup (pool,"Constant_Number_2");
gmi->tmax=90;
gmi->type=GANGLIA_VALUE_UNSIGNED_INT;
gmi->msg_size= UDP_HEADER_SIZE+8;
gmi->units= apr_pstrdup (pool,"Num");
gmi->slope=apr_pstrdup (pool,"zero");
gmi->fmt=apr_pstrdup (pool,"%u");
gmi->desc= apr_pstrdup (pool,"Example module metric (constant number) 2");
MMETRIC_INIT_METADATA(gmi, pool);
MMETRIC_ADD_METADATA(gmi,MGROUP,"example_2");
printf ("\nSecond metric done");
*/
//gmi = (Ganglia_25metric*)apr_array_push(metric_info);
//printf ("\nStarted null metric");
//gmi->name= apr_pstrdup (pool,NULL);
//memset (gmi, 0, sizeof(*gmi));
printf ("\nMetric initing done");
return 0;
And this gives a segfault too! And here is the output:
In the ex_metric_init function
Got first GMI
First metric done
Segmentation fault
ie there is a segfault between the last and second last printf
statements! Any clues?
Thanks,
Sylvester
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