qb_map_notify_add(3)

Add a notifier to the map.

Section 3 libqb-dev bookworm source

Description

QB_MAP_NOTIFY_ADD

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

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.