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networkd: optimize link_node_enumerator() a bit

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strv_consume() is pretty expensive when invoked piecemeal, hence optimize it a bit by pre-allocating a properly sized
array.
This commit is contained in:
Lennart Poettering 2016-01-19 18:35:32 +01:00
parent 3abaabdab7
commit fdb90ac6a6
1 changed files with 7 additions and 4 deletions
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11
src/network/networkd-link-bus.c
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@ -59,15 +59,19 @@ static char *link_bus_path(Link *link) {
int link_node_enumerator(sd_bus *bus, const char *path, void *userdata, char ***nodes, sd_bus_error *error) {
_cleanup_strv_free_ char **l = NULL;
Manager *m = userdata;
unsigned c = 0;
Link *link;
Iterator i;
int r;
assert(bus);
assert(path);
assert(m);
assert(nodes);
l = new0(char*, hashmap_size(m->links) + 1);
if (!l)
return -ENOMEM;
HASHMAP_FOREACH(link, m->links, i) {
char *p;
@ -75,11 +79,10 @@ int link_node_enumerator(sd_bus *bus, const char *path, void *userdata, char ***
if (!p)
return -ENOMEM;
r = strv_consume(&l, p);
if (r < 0)
return r;
l[c++] = p;
}
l[c] = NULL;
*nodes = l;
l = NULL;