Ok, so I tried to make a dynamically initializing module. I am
basically trying to convert the example module to a dynamically
initializing one..
My metrc_init function looks like this:
static int ex_metric_init ( apr_pool_t *p )
{
Ganglia_25metric* gmi;
apr_pool_create(&pool, p);
metric_info = apr_array_make(pool, 10, sizeof(Ganglia_25metric));
// metric_mapping_info = apr_array_make(pool, 10, sizeof(mapped_info_t));
gmi = (Ganglia_25metric*)apr_array_push(metric_info);
gmi->name= "Random_Numbers_2";
gmi->tmax=90;
gmi->type=GANGLIA_VALUE_UNSIGNED_INT;
gmi->msg_size= UDP_HEADER_SIZE+8;
gmi->units= "Num";
gmi->slope="both";
gmi->fmt="%u";
gmi->desc= "Example module metric (random numbers) 2";
MMETRIC_INIT_METADATA(gmi, pool);
MMETRIC_ADD_METADATA(gmi,MGROUP,"example_2");
gmi = (Ganglia_25metric*)apr_array_push(metric_info);
gmi->name= "Constant_Number_2";
gmi->tmax=90;
gmi->type=GANGLIA_VALUE_UNSIGNED_INT;
gmi->msg_size= UDP_HEADER_SIZE+8;
gmi->units= "Num";
gmi->slope="zero";
gmi->fmt="%u";
gmi->desc= "Example module metric (constant number) 2";
MMETRIC_INIT_METADATA(gmi, pool);
MMETRIC_ADD_METADATA(gmi,MGROUP,"example_2");
gmi = (Ganglia_25metric*)apr_array_push(metric_info);
memset (gmi, 0, sizeof(*gmi));
return 0;
}
Q1. For some reason this gives me a segmentation fault. Any ideas why?
Q2. How do I put printf / cout statements so I can see them when gmond
runs- which will be very helpful for debugging.
Thanks,
Sylvester
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