ph_hook_point_t *ph_hook_point_get(ph_string_t *name, bool create)
{
ph_hook_point_t *hp = 0;
ck_rwlock_read_lock(&rwlock);
{
ph_ht_lookup(&hook_hash, &name, &hp, false);
}
ck_rwlock_read_unlock(&rwlock);
if (hp || !create) {
return hp;
}
ck_rwlock_write_lock(&rwlock);
{
// Look again: someone may have populated while we were unlocked
ph_ht_lookup(&hook_hash, &name, &hp, false);
if (!hp) {
hp = ph_mem_alloc(mt.hookpoint);
if (hp) {
if (ph_ht_set(&hook_hash, &name, &hp) != PH_OK) {
ph_mem_free(mt.hookpoint, hp);
hp = NULL;
}
}
}
}
ck_rwlock_write_unlock(&rwlock);
return hp;
}
/* called when ares creates a new socket */
static int sock_create_cb(ares_socket_t socket_fd, int type, void *data)
{
ph_dns_channel_t *chan = data;
ph_job_t *job = ph_mem_alloc(mt.job);
ph_unused_parameter(type);
if (!job) {
return -1;
}
ph_job_init(job);
job->callback = process_ares;
job->data = chan;
job->fd = socket_fd;
if (ph_ht_set(&chan->sock_map, &socket_fd, &job) != PH_OK) {
ph_mem_free(mt.job, job);
return -1;
}
return 0;
}
