table of contents
QB_MAP_NOTIFY_ADD(3) | libqb Programmer's Manual | QB_MAP_NOTIFY_ADD(3) |
NAME¶
qb_map_notify_add - Add a notifier to the map.
SYNOPSIS¶
#include <qb/qbmap.h> int32_t qb_map_notify_add(
qb_map_t *m, /* the map instance */ /*
* the key (or prefix) to attach the notification to.
*/
const char *key,
qb_map_notify_fn fn, /* the callback */
int32_t events, /* the type of events to register for. */
void *user_data /* a pointer to be passed into the callback*/ );
PARAMS¶
m the map instance
key the key (or prefix) to attach the notification to.
fn the callback
events the type of events to register for.
user_data a pointer to be passed into the callback
DESCRIPTION¶
RETURN VALUE¶
0 success
-errno failure
NOTE¶
you can use key prefixes with trie maps.
SEE ALSO¶
qb_trie_dump(3), qb_map_iter_create(3), qb_skiplist_create(3), qb_map_notify_del(3), qb_map_put(3), qb_map_count_get(3), qb_map_foreach(3), qb_map_pref_iter_create(3), qb_map_iter_next(3), qb_map_get(3), qb_map_destroy(3), qb_hashtable_create(3), qb_map_iter_free(3), qb_trie_create(3), qb_map_notify_del_2(3), qb_map_rm(3)
COPYRIGHT¶
Copyright (C) 2010-2020 Red Hat, Inc.
2023-07-24 | LIBQB |