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#include <net-snmp/net-snmp-config.h>
#include <net-snmp/net-snmp-includes.h>
#include <net-snmp/agent/net-snmp-agent-includes.h>
#include <net-snmp/agent/hardware/memory.h>
#include <unistd.h>
#include <sys/protosw.h>
#include <libperfstat.h>
#include <sys/stat.h>
/*
* Load the latest memory usage statistics
*/
int netsnmp_mem_arch_load( netsnmp_cache *cache, void *magic ) {
netsnmp_memory_info *mem;
perfstat_memory_total_t pstat_mem;
long pagesize;
/*
* Retrieve the memory information from the underlying O/S...
*/
if (perfstat_memory_total((perfstat_id_t *)NULL, &pstat_mem,
sizeof(perfstat_memory_total_t), 1) < 1) {
snmp_log(LOG_ERR, "memory_aix: perfstat_memory_total failed!\n");
return -1;
}
pagesize = getpagesize();
/*
* ... and save this in a standard form.
*/
mem = netsnmp_memory_get_byIdx( NETSNMP_MEM_TYPE_PHYSMEM, 1 );
if (!mem) {
snmp_log_perror("No Physical Memory info entry");
} else {
if (!mem->descr)
mem->descr = strdup("Physical memory");
mem->units = pagesize; /* or 4096 */
mem->size = pstat_mem.real_total;
mem->free = pstat_mem.real_free;
}
/* ??? Duplicates Physical Memory statistics? */
mem = netsnmp_memory_get_byIdx( NETSNMP_MEM_TYPE_USERMEM, 1 );
if (!mem) {
snmp_log_perror("No (user) Memory info entry");
} else {
if (!mem->descr)
mem->descr = strdup("Real memory");
mem->units = pagesize; /* or 4096 */
mem->size = pstat_mem.real_total; /* ? less system memory ? */
mem->free = pstat_mem.real_free;
}
mem = netsnmp_memory_get_byIdx( NETSNMP_MEM_TYPE_VIRTMEM, 1 );
if (!mem) {
snmp_log_perror("No Virtual Memory info entry");
} else {
if (!mem->descr)
mem->descr = strdup("Virtual memory");
mem->units = pagesize; /* or 4096 */
mem->size = pstat_mem.virt_total;
mem->free = pstat_mem.real_free + pstat_mem.pgsp_free;
}
mem = netsnmp_memory_get_byIdx( NETSNMP_MEM_TYPE_SWAP, 1 );
if (!mem) {
snmp_log_perror("No Swap info entry");
} else {
if (!mem->descr)
mem->descr = strdup("Swap space");
mem->units = pagesize; /* or 4096 */
mem->size = pstat_mem.pgsp_total;
mem->free = pstat_mem.pgsp_free;
mem->other = pstat_mem.pgsp_rsvd;
}
return 0;
}
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