int
main (int argc, char *argv[])
{
arc_t *arc = NULL;
arc_item_t *item = NULL;
//int first = 0;
unsigned long id;
if (argc > 1)
arc = arc_load (argv[1], NULL);
else
arc = arc_load (outfile, (arc_sig_t *)signature);
if (arc == NULL) {
printf ("*** Error: failed to open archive file \"%s\"!\n", outfile);
exit (42);
}
printf ("%6s %10s %10s %s\n", "ID", "POS", "SIZE", "NAME");
printf ("%6s %10s %10s %s\n", "--", "---", "----", "----");
while ((item = arc_next (arc, item)) != NULL) {
printf ("%6lu %10lu %10lu %s\n", item->id, item->pos, item->size, item->name);
//if (!first) {
// first = 1;
// write_item (item);
//}
}
printf ("\n");
id = 101;
item = arc_byid (arc, id);
if (item == NULL)
printf ("*** Error: item with id %lu not found!\n", id);
else {
printf ("%6lu %10lu %10lu %s\n", item->id, item->pos, item->size, item->name);
write_item (item);
printf ("\n");
}
return (0);
}
int
arc_load(arc_t *cache, const void *key, size_t klen, void *valuep, size_t vlen)
{
arc_object_t *obj = ht_get_deep_copy(cache->hash, (void *)key, klen, NULL, update_obj_cb, cache);
if (obj) {
//release_ref(cache->refcnt, obj->node);
return 1;
}
obj = arc_object_create(cache, key, klen);
if (!obj)
return -1;
// let our cache user initialize the underlying object
cache->ops->init(key, klen, 0, (arc_resource_t)obj, obj->ptr, cache->ops->priv);
cache->ops->store(obj->ptr, valuep, vlen, cache->ops->priv);
retain_ref(cache->refcnt, obj->node);
// NOTE: atomicity here is ensured by the hashtable implementation
int rc = ht_set_if_not_exists(cache->hash, (void *)key, klen, obj, sizeof(arc_object_t));
switch(rc) {
case -1:
fprintf(stderr, "Can't set the new value in the internal hashtable\n");
release_ref(cache->refcnt, obj->node);
break;
case 1:
// the object has been created in the meanwhile
release_ref(cache->refcnt, obj->node);
// XXX - yes, we have to release it twice
release_ref(cache->refcnt, obj->node);
return arc_load(cache, key, klen, valuep, vlen);
case 0:
break;
default:
fprintf(stderr, "Unknown return code from ht_set_if_not_exists() : %d\n", rc);
release_ref(cache->refcnt, obj->node);
rc = -1;
}
release_ref(cache->refcnt, obj->node);
return rc;
}
