Merge HUGE set of changes temporarily into a branch, to allow me to move them from...
[profile/ivi/pulseaudio-panda.git] / src / pulsecore / flist.h
1 #ifndef foopulseflisthfoo
2 #define foopulseflisthfoo
3
4 /* $Id$ */
5
6 /***
7   This file is part of PulseAudio.
8
9   Copyright 2006 Lennart Poettering
10
11   PulseAudio is free software; you can redistribute it and/or modify
12   it under the terms of the GNU Lesser General Public License as
13   published by the Free Software Foundation; either version 2 of the
14   License, or (at your option) any later version.
15
16   PulseAudio is distributed in the hope that it will be useful, but
17   WITHOUT ANY WARRANTY; without even the implied warranty of
18   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
19   General Public License for more details.
20
21   You should have received a copy of the GNU Lesser General Public
22   License along with PulseAudio; if not, write to the Free Software
23   Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307
24   USA.
25 ***/
26
27 #include <pulse/def.h>
28
29 #include <pulsecore/once.h>
30
31 /* A multiple-reader multipler-write lock-free free list implementation */
32
33 typedef struct pa_flist pa_flist;
34
35 /* Size is required to be a power of two, or 0 for the default size */
36 pa_flist * pa_flist_new(unsigned size);
37 void pa_flist_free(pa_flist *l, pa_free_cb_t free_cb);
38
39 /* Please note that this routine might fail! */
40 int pa_flist_push(pa_flist*l, void *p);
41 void* pa_flist_pop(pa_flist*l);
42
43 #define PA_STATIC_FLIST_DECLARE(name, size)                     \
44     struct {                                                    \
45         pa_flist *flist;                                        \
46         pa_once_t once;                                         \
47     } name##_static_flist = { NULL, PA_ONCE_INIT };             \
48                                                                 \
49     static void name##_init(void) {                             \
50         name##_static_flist.flist = pa_flist_new(size);         \
51     }                                                           \
52                                                                 \
53     static inline pa_flist* name##_get(void) {                  \
54         pa_once(&name##_static_flist.once, name##_init);        \
55         return name##_static_flist.flist;                       \
56     } \
57     struct __stupid_useless_struct_to_allow_trailing_semicolon
58
59 #define PA_STATIC_FLIST_GET(name) (name##_get())
60
61 #endif