.\"  Automatically generated man page, do not edit
.TH QB_MAP_NOTIFY_ADD 3 2022-03-23 "LIBQB" "libqb Programmer's Manual"
.SH NAME
qb_map_notify_add \- Add a notifier to the map. 

.SH SYNOPSIS
.nf
.B #include <qb/qbmap.h>
.sp
\fBint32_t qb_map_notify_add\fP(
    \fBqb_map_t         *\fP\fIm\fP,\fR /* the map instance */
\fP    /*
     * the key (or prefix) to attach the notification to.
     */
    \fBconst char       *\fP\fIkey\fP,
    \fBqb_map_notify_fn  \fP\fIfn\fP,\fR /* the callback */
    \fBint32_t           \fP\fIevents\fP,\fR     /* the type of events to register for. */
    \fBvoid             *\fP\fIuser_data\fP\fR        /* a pointer to be passed into the callback*/
);
.fi
.SH PARAMS
\fBm         \fP\fIthe map instance \fP
.PP
\fBkey       \fP\fIthe\fP
.PP
\fBfn        \fP\fIthe callback \fP
.PP
\fBevents    \fP\fIthe type of events to register for. \fP
.PP
\fBuser_data \fP\fIa pointer to be passed into the callback\fP
.PP
.SH DESCRIPTION
.RE
.SH RETURN VALUE
.PP
\fB0          \fPsuccess 
.PP
\fB-errno     \fPfailure 
.PP
.SH NOTE
.PP
you can use key prefixes with trie maps.
.SH SEE ALSO
.PP
.nh
.ad l
\fIqb_trie_dump\fR(3), \fIqb_map_iter_create\fR(3), \fIqb_skiplist_create\fR(3), \fIqb_map_notify_del\fR(3), \fIqb_map_put\fR(3), \fIqb_map_count_get\fR(3), \fIqb_map_foreach\fR(3), \fIqb_map_pref_iter_create\fR(3), \fIqb_map_iter_next\fR(3), \fIqb_map_get\fR(3), \fIqb_map_destroy\fR(3), \fIqb_hashtable_create\fR(3), \fIqb_map_iter_free\fR(3), \fIqb_trie_create\fR(3), \fIqb_map_notify_del_2\fR(3), \fIqb_map_rm\fR(3)
.ad
.hy
.SH "COPYRIGHT"
.PP
Copyright (C) 2010-2020 Red Hat, Inc.