1 /*****************************************************************************
2 * vlc_threads.h : threads implementation for the VideoLAN client
3 * This header provides portable declarations for mutexes & conditions
4 *****************************************************************************
5 * Copyright (C) 1999, 2002 the VideoLAN team
8 * Authors: Jean-Marc Dressler <polux@via.ecp.fr>
9 * Samuel Hocevar <sam@via.ecp.fr>
10 * Gildas Bazin <gbazin@netcourrier.com>
11 * Christophe Massiot <massiot@via.ecp.fr>
13 * This program is free software; you can redistribute it and/or modify
14 * it under the terms of the GNU General Public License as published by
15 * the Free Software Foundation; either version 2 of the License, or
16 * (at your option) any later version.
18 * This program is distributed in the hope that it will be useful,
19 * but WITHOUT ANY WARRANTY; without even the implied warranty of
20 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
21 * GNU General Public License for more details.
23 * You should have received a copy of the GNU General Public License
24 * along with this program; if not, write to the Free Software
25 * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111, USA.
26 *****************************************************************************/
30 #if defined(DEBUG) && defined(HAVE_SYS_TIME_H)
31 # include <sys/time.h>
34 #if defined( PTH_INIT_IN_PTH_H ) /* GNU Pth */
37 #elif defined( ST_INIT_IN_ST_H ) /* State threads */
40 #elif defined( UNDER_CE )
42 #elif defined( WIN32 )
43 # include <process.h> /* Win32 API */
45 #elif defined( HAVE_KERNEL_SCHEDULER_H ) /* BeOS */
46 # include <kernel/OS.h>
47 # include <kernel/scheduler.h>
48 # include <byteorder.h>
50 #elif defined( PTHREAD_COND_T_IN_PTHREAD_H ) /* pthreads (like Linux & BSD) */
53 /* Needed for pthread_cond_timedwait */
56 /* This is not prototyped under Linux, though it exists. */
57 int pthread_mutexattr_setkind_np( pthread_mutexattr_t *attr, int kind );
59 #elif defined( HAVE_CTHREADS_H ) /* GNUMach */
60 # include <cthreads.h>
63 # error no threads available on your system !
67 /*****************************************************************************
69 *****************************************************************************/
71 /* Thread priorities */
73 # define VLC_THREAD_PRIORITY_LOW (-47)
74 # define VLC_THREAD_PRIORITY_INPUT 37
75 # define VLC_THREAD_PRIORITY_AUDIO 37
76 # define VLC_THREAD_PRIORITY_VIDEO (-47)
77 # define VLC_THREAD_PRIORITY_OUTPUT 37
78 # define VLC_THREAD_PRIORITY_HIGHEST 37
80 #elif defined(SYS_BEOS)
81 # define VLC_THREAD_PRIORITY_LOW 5
82 # define VLC_THREAD_PRIORITY_INPUT 10
83 # define VLC_THREAD_PRIORITY_AUDIO 10
84 # define VLC_THREAD_PRIORITY_VIDEO 5
85 # define VLC_THREAD_PRIORITY_OUTPUT 15
86 # define VLC_THREAD_PRIORITY_HIGHEST 15
88 #elif defined(PTHREAD_COND_T_IN_PTHREAD_H)
89 # define VLC_THREAD_PRIORITY_LOW 0
90 # define VLC_THREAD_PRIORITY_INPUT 20
91 # define VLC_THREAD_PRIORITY_AUDIO 10
92 # define VLC_THREAD_PRIORITY_VIDEO 0
93 # define VLC_THREAD_PRIORITY_OUTPUT 30
94 # define VLC_THREAD_PRIORITY_HIGHEST 40
96 #elif defined(WIN32) || defined(UNDER_CE)
97 /* Define different priorities for WinNT/2K/XP and Win9x/Me */
98 # define VLC_THREAD_PRIORITY_LOW 0
99 # define VLC_THREAD_PRIORITY_INPUT \
100 (IS_WINNT ? THREAD_PRIORITY_ABOVE_NORMAL : 0)
101 # define VLC_THREAD_PRIORITY_AUDIO \
102 (IS_WINNT ? THREAD_PRIORITY_HIGHEST : 0)
103 # define VLC_THREAD_PRIORITY_VIDEO \
104 (IS_WINNT ? 0 : THREAD_PRIORITY_BELOW_NORMAL )
105 # define VLC_THREAD_PRIORITY_OUTPUT \
106 (IS_WINNT ? THREAD_PRIORITY_ABOVE_NORMAL : 0)
107 # define VLC_THREAD_PRIORITY_HIGHEST \
108 (IS_WINNT ? THREAD_PRIORITY_TIME_CRITICAL : 0)
111 # define VLC_THREAD_PRIORITY_LOW 0
112 # define VLC_THREAD_PRIORITY_INPUT 0
113 # define VLC_THREAD_PRIORITY_AUDIO 0
114 # define VLC_THREAD_PRIORITY_VIDEO 0
115 # define VLC_THREAD_PRIORITY_OUTPUT 0
116 # define VLC_THREAD_PRIORITY_HIGHEST 0
120 /*****************************************************************************
122 *****************************************************************************/
124 #if defined( PTH_INIT_IN_PTH_H )
125 typedef pth_t vlc_thread_t;
129 vlc_object_t * p_this;
134 vlc_object_t * p_this;
137 #elif defined( ST_INIT_IN_ST_H )
138 typedef st_thread_t vlc_thread_t;
142 vlc_object_t * p_this;
147 vlc_object_t * p_this;
150 #elif defined( WIN32 ) || defined( UNDER_CE )
151 typedef HANDLE vlc_thread_t;
152 typedef BOOL (WINAPI *SIGNALOBJECTANDWAIT) ( HANDLE, HANDLE, DWORD, BOOL );
153 typedef unsigned (WINAPI *PTHREAD_START) (void *);
157 /* WinNT/2K/XP implementation */
159 /* Win95/98/ME implementation */
160 CRITICAL_SECTION csection;
162 vlc_object_t * p_this;
167 volatile int i_waiting_threads;
168 /* WinNT/2K/XP implementation */
170 SIGNALOBJECTANDWAIT SignalObjectAndWait;
171 /* Win95/98/ME implementation */
173 CRITICAL_SECTION csection;
176 vlc_object_t * p_this;
179 #elif defined( HAVE_KERNEL_SCHEDULER_H )
180 /* This is the BeOS implementation of the vlc threads, note that the mutex is
181 * not a real mutex and the cond_var is not like a pthread cond_var but it is
182 * enough for what wee need */
184 typedef thread_id vlc_thread_t;
191 vlc_object_t * p_this;
199 vlc_object_t * p_this;
202 #elif defined( PTHREAD_COND_T_IN_PTHREAD_H )
203 typedef pthread_t vlc_thread_t;
206 pthread_mutex_t mutex;
207 vlc_object_t * p_this;
212 vlc_object_t * p_this;
215 #elif defined( HAVE_CTHREADS_H )
216 typedef cthread_t vlc_thread_t;
218 /* Those structs are the ones defined in /include/cthreads.h but we need
219 * to handle (&foo) where foo is a (mutex_t) while they handle (foo) where
220 * foo is a (mutex_t*) */
226 struct cthread_queue queue;
228 vlc_object_t * p_this;
234 struct cthread_queue queue;
236 struct cond_imp *implications;
238 vlc_object_t * p_this;