A modern Music Player Daemon based on Rockbox open source high quality audio player
tsiry-sandratraina.com
libadwaita
audio
rust
zig
deno
mpris
rockbox
mpd
1/***************************************************************************
2 * __________ __ ___.
3 * Open \______ \ ____ ____ | | _\_ |__ _______ ___
4 * Source | _// _ \_/ ___\| |/ /| __ \ / _ \ \/ /
5 * Jukebox | | ( <_> ) \___| < | \_\ ( <_> > < <
6 * Firmware |____|_ /\____/ \___ >__|_ \|___ /\____/__/\_ \
7 * \/ \/ \/ \/ \/
8 * $Id$
9 *
10 * Copyright (C) 2002 by Ulf Ralberg
11 *
12 * This program is free software; you can redistribute it and/or
13 * modify it under the terms of the GNU General Public License
14 * as published by the Free Software Foundation; either version 2
15 * of the License, or (at your option) any later version.
16 *
17 * This software is distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY
18 * KIND, either express or implied.
19 *
20 ****************************************************************************/
21
22
23#ifndef CORELOCK_H
24#define CORELOCK_H
25
26#include "config.h"
27
28#ifndef HAVE_CORELOCK_OBJECT
29
30/* No atomic corelock op needed or just none defined */
31#define corelock_init(cl) \
32 do {} while (0)
33#define corelock_lock(cl) \
34 do {} while (0)
35#define corelock_try_lock(cl) \
36 do {} while (0)
37#define corelock_unlock(cl) \
38 do {} while (0)
39
40#else
41
42/* No reliable atomic instruction available - use Peterson's algorithm */
43struct corelock
44{
45 volatile unsigned char myl[NUM_CORES];
46 volatile unsigned char turn;
47} __attribute__((packed));
48
49/* Too big to inline everywhere */
50extern void corelock_init(struct corelock *cl);
51extern void corelock_lock(struct corelock *cl);
52extern int corelock_try_lock(struct corelock *cl);
53extern void corelock_unlock(struct corelock *cl);
54
55#endif /* HAVE_CORELOCK_OBJECT */
56
57#endif /* CORELOCK_H */