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[SIGAR-4] native version of the Java NetStat metrics

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This commit is contained in:
Doug MacEachern 2006-07-10 21:32:22 +00:00
parent b039f75177
commit 001ed4238d
1 changed files with 80 additions and 6 deletions
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82
src/sigar.c
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@ -808,8 +808,7 @@ static int net_stat_walker(sigar_net_connection_walker_t *walker,
return SIGAR_OK;
}
SIGAR_DECLARE(int)
sigar_net_stat_get(sigar_t *sigar,
static int sigar_net_stat_get_walk(sigar_t *sigar,
sigar_net_stat_t *netstat,
int flags)
{
@ -817,8 +816,6 @@ sigar_net_stat_get(sigar_t *sigar,
sigar_net_connection_walker_t walker;
net_stat_getter_t getter;
SIGAR_ZERO(netstat);
getter.netstat = netstat;
getter.listen_ports = sigar_cache_new(32);
getter.listen_ports->free_value = listen_port_free;
@ -836,6 +833,83 @@ sigar_net_stat_get(sigar_t *sigar,
return status;
}
static int sigar_net_stat_get_list(sigar_t *sigar,
sigar_net_stat_t *netstat,
int flags)
{
int status, i;
sigar_net_connection_list_t connlist;
sigar_cache_t *listen_ports;
status = sigar_net_connection_list_get(sigar, &connlist, flags);
if (status != SIGAR_OK) {
return status;
}
listen_ports = sigar_cache_new(32);
listen_ports->free_value = listen_port_free;
/* first pass, get states and listening port numbers */
for (i=0; i<connlist.number; i++) {
sigar_net_connection_t *conn = &connlist.data[i];
int state = conn->state;
netstat->tcp_states[state]++;
if (state == SIGAR_TCP_LISTEN) {
sigar_cache_entry_t *entry =
sigar_cache_get(listen_ports,
conn->local_port);
entry->value = (void*)conn->local_port;
}
}
/* second pass, get addresses connected to listening ports */
for (i=0; i<connlist.number; i++) {
sigar_net_connection_t *conn = &connlist.data[i];
if (conn->state != SIGAR_TCP_LISTEN) {
if (sigar_cache_find(listen_ports,
conn->local_port))
{
netstat->tcp_inbound_total++;
}
else {
netstat->tcp_outbound_total++;
}
}
}
sigar_cache_destroy(listen_ports);
sigar_net_connection_list_destroy(sigar, &connlist);
return status;
}
SIGAR_DECLARE(int)
sigar_net_stat_get(sigar_t *sigar,
sigar_net_stat_t *netstat,
int flags)
{
SIGAR_ZERO(netstat);
if (getenv("SIGAR_NETSTAT_WALK")) {
/* XXX only for testing atm
* The 'walk' version is faster that the 'list' version,
* however the 'walk' version depends on the underlying
* OS to return connections in the LISTEN state before
* those which are connected to the given LISTEN port.
* Seems this is the case in Linux at least, but that
* is likely subject to change.
*/
return sigar_net_stat_get_walk(sigar, netstat, flags);
}
else {
return sigar_net_stat_get_list(sigar, netstat, flags);
}
}
int sigar_who_list_create(sigar_who_list_t *wholist)
{
wholist->number = 0;