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ofproto: Use shash instead of svec for uniquifying, in reinit_ports().

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No point in using an O(n log n) algorithm when an O(n) algorithm is
readily available.

(I'm sure that the actual performance difference, if any, does not matter
in practice.)

Acked-by: Jesse Gross <jesse@nicira.com>
This commit is contained in:
Ben Pfaff 2010-12-27 11:32:08 -08:00
parent 7cfb3c26b2
commit c77d9d1399
1 changed files with 8 additions and 8 deletions
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16
ofproto/ofproto.c
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@ -1481,7 +1481,8 @@ ofproto_flush_flows(struct ofproto *ofproto)
static void
reinit_ports(struct ofproto *p)
{
struct svec devnames;
struct shash_node *node;
struct shash devnames;
struct ofport *ofport;
struct odp_port *odp_ports;
size_t n_odp_ports;
@ -1489,21 +1490,20 @@ reinit_ports(struct ofproto *p)
COVERAGE_INC(ofproto_reinit_ports);
svec_init(&devnames);
shash_init(&devnames);
HMAP_FOR_EACH (ofport, hmap_node, &p->ports) {
svec_add (&devnames, ofport->opp.name);
shash_add_once (&devnames, ofport->opp.name, NULL);
}
dpif_port_list(p->dpif, &odp_ports, &n_odp_ports);
for (i = 0; i < n_odp_ports; i++) {
svec_add (&devnames, odp_ports[i].devname);
shash_add_once (&devnames, odp_ports[i].devname, NULL);
}
free(odp_ports);
svec_sort_unique(&devnames);
for (i = 0; i < devnames.n; i++) {
update_port(p, devnames.names[i]);
SHASH_FOR_EACH (node, &devnames) {
update_port(p, node->name);
}
svec_destroy(&devnames);
shash_destroy(&devnames);
}
static struct ofport *