1 /***
2 This file is part of PulseAudio.
3
4 Copyright 2004-2006 Lennart Poettering
5
6 PulseAudio is free software; you can redistribute it and/or modify
7 it under the terms of the GNU Lesser General Public License as
8 published by the Free Software Foundation; either version 2.1 of the
9 License, or (at your option) any later version.
10
11 PulseAudio is distributed in the hope that it will be useful, but
12 WITHOUT ANY WARRANTY; without even the implied warranty of
13 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
14 Lesser General Public License for more details.
15
16 You should have received a copy of the GNU Lesser General Public
17 License along with PulseAudio; if not, see <http://www.gnu.org/licenses/>.
18 ***/
19
20 #ifdef HAVE_CONFIG_H
21 #include <config.h>
22 #endif
23
24 #include <stdlib.h>
25
26 #include <pulse/xmalloc.h>
27
28 #include <pulsecore/i18n.h>
29 #include <pulsecore/macro.h>
30
31 #include "mainloop-api.h"
32
33 struct once_info {
34 void (*callback)(pa_mainloop_api*m, void *userdata);
35 void *userdata;
36 };
37
once_callback(pa_mainloop_api * m,pa_defer_event * e,void * userdata)38 static void once_callback(pa_mainloop_api *m, pa_defer_event *e, void *userdata) {
39 struct once_info *i = userdata;
40
41 pa_assert(m);
42 pa_assert(i);
43
44 pa_assert(i->callback);
45 i->callback(m, i->userdata);
46
47 pa_assert(m->defer_free);
48 m->defer_free(e);
49 }
50
free_callback(pa_mainloop_api * m,pa_defer_event * e,void * userdata)51 static void free_callback(pa_mainloop_api *m, pa_defer_event *e, void *userdata) {
52 struct once_info *i = userdata;
53
54 pa_assert(m);
55 pa_assert(i);
56 pa_xfree(i);
57 }
58
pa_mainloop_api_once(pa_mainloop_api * m,void (* callback)(pa_mainloop_api * m,void * userdata),void * userdata)59 void pa_mainloop_api_once(pa_mainloop_api* m, void (*callback)(pa_mainloop_api *m, void *userdata), void *userdata) {
60 struct once_info *i;
61 pa_defer_event *e;
62
63 pa_assert(m);
64 pa_assert(callback);
65
66 pa_init_i18n();
67
68 i = pa_xnew(struct once_info, 1);
69 i->callback = callback;
70 i->userdata = userdata;
71
72 pa_assert(m->defer_new);
73 pa_assert_se(e = m->defer_new(m, once_callback, i));
74 m->defer_set_destroy(e, free_callback);
75 }
76