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 VideoLAN
6 * $Id: vlc_threads.h,v 1.33 2003/08/28 17:19:42 sam Exp $
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( PTHREAD_COND_T_IN_PTHREAD_H ) /* pthreads (like Linux & BSD) */
48 /* Needed for pthread_cond_timedwait */
51 /* This is not prototyped under Linux, though it exists. */
52 int pthread_mutexattr_setkind_np( pthread_mutexattr_t *attr, int kind );
54 #elif defined( HAVE_CTHREADS_H ) /* GNUMach */
55 # include <cthreads.h>
57 #elif defined( HAVE_KERNEL_SCHEDULER_H ) /* BeOS */
58 # include <kernel/OS.h>
59 # include <kernel/scheduler.h>
60 # include <byteorder.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
79 #elif defined(WIN32) || defined(UNDER_CE)
80 /* Define different priorities for WinNT/2K/XP and Win9x/Me */
81 # define VLC_THREAD_PRIORITY_LOW 0
82 # define VLC_THREAD_PRIORITY_INPUT \
83 (IS_WINNT ? THREAD_PRIORITY_TIME_CRITICAL : 0)
84 # define VLC_THREAD_PRIORITY_AUDIO \
85 (IS_WINNT ? THREAD_PRIORITY_HIGHEST : 0)
86 # define VLC_THREAD_PRIORITY_VIDEO \
87 (IS_WINNT ? 0 : THREAD_PRIORITY_BELOW_NORMAL )
88 # define VLC_THREAD_PRIORITY_OUTPUT \
89 (IS_WINNT ? THREAD_PRIORITY_ABOVE_NORMAL : 0)
90 # define VLC_THREAD_PRIORITY_HIGHEST \
91 (IS_WINNT ? THREAD_PRIORITY_TIME_CRITICAL : 0)
93 #elif defined(SYS_BEOS)
94 # define VLC_THREAD_PRIORITY_LOW 5
95 # define VLC_THREAD_PRIORITY_INPUT 10
96 # define VLC_THREAD_PRIORITY_AUDIO 10
97 # define VLC_THREAD_PRIORITY_VIDEO 5
98 # define VLC_THREAD_PRIORITY_OUTPUT 15
101 # define VLC_THREAD_PRIORITY_LOW 0
102 # define VLC_THREAD_PRIORITY_INPUT 0
103 # define VLC_THREAD_PRIORITY_AUDIO 0
104 # define VLC_THREAD_PRIORITY_VIDEO 0
105 # define VLC_THREAD_PRIORITY_OUTPUT 0
109 /*****************************************************************************
111 *****************************************************************************/
113 #if defined( PTH_INIT_IN_PTH_H )
114 typedef pth_t vlc_thread_t;
118 vlc_object_t * p_this;
123 vlc_object_t * p_this;
126 #elif defined( ST_INIT_IN_ST_H )
127 typedef st_thread_t vlc_thread_t;
131 vlc_object_t * p_this;
136 vlc_object_t * p_this;
139 #elif defined( WIN32 ) || defined( UNDER_CE )
140 typedef HANDLE vlc_thread_t;
141 typedef BOOL (WINAPI *SIGNALOBJECTANDWAIT) ( HANDLE, HANDLE, DWORD, BOOL );
142 typedef unsigned (__stdcall *PTHREAD_START) (void *);
146 /* WinNT/2K/XP implementation */
148 /* Win95/98/ME implementation */
149 CRITICAL_SECTION csection;
151 vlc_object_t * p_this;
156 volatile int i_waiting_threads;
157 /* WinNT/2K/XP implementation */
159 SIGNALOBJECTANDWAIT SignalObjectAndWait;
160 /* Win95/98/ME implementation */
162 CRITICAL_SECTION csection;
165 vlc_object_t * p_this;
168 #elif defined( PTHREAD_COND_T_IN_PTHREAD_H )
169 typedef pthread_t vlc_thread_t;
172 pthread_mutex_t mutex;
173 vlc_object_t * p_this;
178 vlc_object_t * p_this;
181 #elif defined( HAVE_CTHREADS_H )
182 typedef cthread_t vlc_thread_t;
184 /* Those structs are the ones defined in /include/cthreads.h but we need
185 * to handle (&foo) where foo is a (mutex_t) while they handle (foo) where
186 * foo is a (mutex_t*) */
192 struct cthread_queue queue;
194 vlc_object_t * p_this;
200 struct cthread_queue queue;
202 struct cond_imp *implications;
204 vlc_object_t * p_this;
207 #elif defined( HAVE_KERNEL_SCHEDULER_H )
208 /* This is the BeOS implementation of the vlc threads, note that the mutex is
209 * not a real mutex and the cond_var is not like a pthread cond_var but it is
210 * enough for what wee need */
212 typedef thread_id vlc_thread_t;
219 vlc_object_t * p_this;
227 vlc_object_t * p_this;