mirror of
https://github.com/videolan/vlc.git
synced 2025-01-11 18:28:04 +08:00
4598fd249a
+ lower a bit the input thread priority on win32 (using THREAD_PRIORITY_ABOVE_NORMAL now). * modules/access/file.c: + s/config_GetInt()/var_Get() for file-caching. * modules/access_output/udp.c: + less verbose debug messages. + increase thread priority on win32.
239 lines
6.8 KiB
C
239 lines
6.8 KiB
C
/*****************************************************************************
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* vlc_threads.h : threads implementation for the VideoLAN client
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* This header provides portable declarations for mutexes & conditions
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*****************************************************************************
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* Copyright (C) 1999, 2002 VideoLAN
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* $Id: vlc_threads.h,v 1.37 2004/03/01 12:50:39 gbazin Exp $
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*
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* Authors: Jean-Marc Dressler <polux@via.ecp.fr>
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* Samuel Hocevar <sam@via.ecp.fr>
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* Gildas Bazin <gbazin@netcourrier.com>
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* Christophe Massiot <massiot@via.ecp.fr>
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 2 of the License, or
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111, USA.
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*****************************************************************************/
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#include <stdio.h>
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#if defined(DEBUG) && defined(HAVE_SYS_TIME_H)
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# include <sys/time.h>
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#endif
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#if defined( PTH_INIT_IN_PTH_H ) /* GNU Pth */
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# include <pth.h>
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#elif defined( ST_INIT_IN_ST_H ) /* State threads */
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# include <st.h>
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#elif defined( UNDER_CE )
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/* WinCE API */
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#elif defined( WIN32 )
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# include <process.h> /* Win32 API */
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#elif defined( HAVE_KERNEL_SCHEDULER_H ) /* BeOS */
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# include <kernel/OS.h>
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# include <kernel/scheduler.h>
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# include <byteorder.h>
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#elif defined( PTHREAD_COND_T_IN_PTHREAD_H ) /* pthreads (like Linux & BSD) */
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# include <pthread.h>
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# ifdef DEBUG
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/* Needed for pthread_cond_timedwait */
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# include <errno.h>
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# endif
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/* This is not prototyped under Linux, though it exists. */
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int pthread_mutexattr_setkind_np( pthread_mutexattr_t *attr, int kind );
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#elif defined( HAVE_CTHREADS_H ) /* GNUMach */
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# include <cthreads.h>
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#else
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# error no threads available on your system !
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#endif
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/*****************************************************************************
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* Constants
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*****************************************************************************/
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/* Thread priorities */
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#ifdef SYS_DARWIN
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# define VLC_THREAD_PRIORITY_LOW (-47)
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# define VLC_THREAD_PRIORITY_INPUT 37
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# define VLC_THREAD_PRIORITY_AUDIO 37
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# define VLC_THREAD_PRIORITY_VIDEO (-47)
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# define VLC_THREAD_PRIORITY_OUTPUT 37
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#elif defined(SYS_BEOS)
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# define VLC_THREAD_PRIORITY_LOW 5
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# define VLC_THREAD_PRIORITY_INPUT 10
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# define VLC_THREAD_PRIORITY_AUDIO 10
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# define VLC_THREAD_PRIORITY_VIDEO 5
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# define VLC_THREAD_PRIORITY_OUTPUT 15
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#elif defined(PTHREAD_COND_T_IN_PTHREAD_H)
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# define VLC_THREAD_PRIORITY_LOW 0
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# define VLC_THREAD_PRIORITY_INPUT 20
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# define VLC_THREAD_PRIORITY_AUDIO 10
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# define VLC_THREAD_PRIORITY_VIDEO 0
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# define VLC_THREAD_PRIORITY_OUTPUT 30
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#elif defined(WIN32) || defined(UNDER_CE)
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/* Define different priorities for WinNT/2K/XP and Win9x/Me */
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# define VLC_THREAD_PRIORITY_LOW 0
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# define VLC_THREAD_PRIORITY_INPUT \
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(IS_WINNT ? THREAD_PRIORITY_ABOVE_NORMAL : 0)
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# define VLC_THREAD_PRIORITY_AUDIO \
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(IS_WINNT ? THREAD_PRIORITY_HIGHEST : 0)
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# define VLC_THREAD_PRIORITY_VIDEO \
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(IS_WINNT ? 0 : THREAD_PRIORITY_BELOW_NORMAL )
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# define VLC_THREAD_PRIORITY_OUTPUT \
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(IS_WINNT ? THREAD_PRIORITY_ABOVE_NORMAL : 0)
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# define VLC_THREAD_PRIORITY_HIGHEST \
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(IS_WINNT ? THREAD_PRIORITY_TIME_CRITICAL : 0)
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#else
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# define VLC_THREAD_PRIORITY_LOW 0
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# define VLC_THREAD_PRIORITY_INPUT 0
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# define VLC_THREAD_PRIORITY_AUDIO 0
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# define VLC_THREAD_PRIORITY_VIDEO 0
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# define VLC_THREAD_PRIORITY_OUTPUT 0
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#endif
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/*****************************************************************************
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* Type definitions
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*****************************************************************************/
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#if defined( PTH_INIT_IN_PTH_H )
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typedef pth_t vlc_thread_t;
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typedef struct
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{
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pth_mutex_t mutex;
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vlc_object_t * p_this;
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} vlc_mutex_t;
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typedef struct
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{
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pth_cond_t cond;
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vlc_object_t * p_this;
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} vlc_cond_t;
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#elif defined( ST_INIT_IN_ST_H )
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typedef st_thread_t vlc_thread_t;
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typedef struct
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{
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st_mutex_t mutex;
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vlc_object_t * p_this;
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} vlc_mutex_t;
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typedef struct
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{
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st_cond_t cond;
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vlc_object_t * p_this;
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} vlc_cond_t;
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#elif defined( WIN32 ) || defined( UNDER_CE )
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typedef HANDLE vlc_thread_t;
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typedef BOOL (WINAPI *SIGNALOBJECTANDWAIT) ( HANDLE, HANDLE, DWORD, BOOL );
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typedef unsigned (__stdcall *PTHREAD_START) (void *);
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typedef struct
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{
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/* WinNT/2K/XP implementation */
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HANDLE mutex;
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/* Win95/98/ME implementation */
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CRITICAL_SECTION csection;
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vlc_object_t * p_this;
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} vlc_mutex_t;
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typedef struct
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{
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volatile int i_waiting_threads;
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/* WinNT/2K/XP implementation */
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HANDLE event;
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SIGNALOBJECTANDWAIT SignalObjectAndWait;
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/* Win95/98/ME implementation */
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HANDLE semaphore;
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CRITICAL_SECTION csection;
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int i_win9x_cv;
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vlc_object_t * p_this;
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} vlc_cond_t;
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#elif defined( HAVE_KERNEL_SCHEDULER_H )
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/* This is the BeOS implementation of the vlc threads, note that the mutex is
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* not a real mutex and the cond_var is not like a pthread cond_var but it is
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* enough for what wee need */
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typedef thread_id vlc_thread_t;
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typedef struct
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{
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int32_t init;
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sem_id lock;
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vlc_object_t * p_this;
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} vlc_mutex_t;
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typedef struct
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{
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int32_t init;
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thread_id thread;
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vlc_object_t * p_this;
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} vlc_cond_t;
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#elif defined( PTHREAD_COND_T_IN_PTHREAD_H )
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typedef pthread_t vlc_thread_t;
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typedef struct
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{
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pthread_mutex_t mutex;
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vlc_object_t * p_this;
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} vlc_mutex_t;
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typedef struct
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{
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pthread_cond_t cond;
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vlc_object_t * p_this;
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} vlc_cond_t;
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#elif defined( HAVE_CTHREADS_H )
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typedef cthread_t vlc_thread_t;
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/* Those structs are the ones defined in /include/cthreads.h but we need
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* to handle (&foo) where foo is a (mutex_t) while they handle (foo) where
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* foo is a (mutex_t*) */
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typedef struct
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{
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spin_lock_t held;
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spin_lock_t lock;
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char *name;
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struct cthread_queue queue;
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vlc_object_t * p_this;
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} vlc_mutex_t;
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typedef struct
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{
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spin_lock_t lock;
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struct cthread_queue queue;
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char *name;
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struct cond_imp *implications;
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vlc_object_t * p_this;
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} vlc_cond_t;
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#endif
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