mirror of
https://code.videolan.org/videolan/vlc
synced 2024-09-04 09:11:33 +02:00
![Sam Hocevar](/assets/img/avatar_default.png)
* ./plugins/win32/Makefile: intfwin.so can be built using commandline. * ./configure.in, ./include/threads.h, ./include/common.h: a custom defs.h file isn't needed for the intfwin plugin anymore. * ./INSTALL.win32: updated compilation instructions for the intfwin plugin.
1073 lines
30 KiB
C
1073 lines
30 KiB
C
/*****************************************************************************
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* threads.h : threads implementation for the VideoLAN client
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* This header provides a portable threads implementation.
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*****************************************************************************
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* Copyright (C) 1999, 2000 VideoLAN
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* $Id: threads.h,v 1.40 2002/04/05 03:27:27 sam 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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*
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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(GPROF) || defined(DEBUG)
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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( WIN32 )
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# include <process.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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#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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#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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* These constants are used by all threads in *_CreateThread() and
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* *_DestroyThreads() functions. Since those calls are non-blocking, an integer
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* value is used as a shared flag to represent the status of the thread.
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*****************************************************************************/
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/* Void status - this value can be used to make sure no operation is currently
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* in progress on the concerned thread in an array of recorded threads */
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#define THREAD_NOP 0 /* nothing happened */
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/* Creation status */
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#define THREAD_CREATE 10 /* thread is initializing */
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#define THREAD_START 11 /* thread has forked */
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#define THREAD_READY 19 /* thread is ready */
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/* Destructions status */
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#define THREAD_DESTROY 20 /* destruction order has been sent */
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#define THREAD_END 21 /* destruction order has been received */
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#define THREAD_OVER 29 /* thread does not exist any more */
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/* Error status */
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#define THREAD_ERROR 30 /* an error occured */
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#define THREAD_FATAL 31 /* an fatal error occured - program must end */
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/*****************************************************************************
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* Types definition
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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 pth_mutex_t vlc_mutex_t;
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typedef pth_cond_t 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 st_mutex_t * vlc_mutex_t;
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typedef st_cond_t * vlc_cond_t;
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#elif defined( WIN32 )
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typedef HANDLE vlc_thread_t;
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typedef struct
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{
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CRITICAL_SECTION csection;
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HANDLE mutex;
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} vlc_mutex_t;
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typedef struct
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{
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int i_waiting_threads;
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HANDLE signal;
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} vlc_cond_t;
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typedef unsigned (__stdcall *PTHREAD_START) (void *);
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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 pthread_mutex_t vlc_mutex_t;
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typedef pthread_cond_t 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 s_mutex {
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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_mutex_t;
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typedef struct s_condition {
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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_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 init;
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sem_id lock;
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} vlc_mutex_t;
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typedef struct
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{
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int32 init;
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thread_id thread;
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} vlc_cond_t;
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#endif
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typedef void *(*vlc_thread_func_t)(void *p_data);
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/*****************************************************************************
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* Prototypes
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*****************************************************************************/
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#ifdef GPROF
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/* Wrapper function for profiling */
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static void * vlc_thread_wrapper ( void *p_wrapper );
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# ifdef WIN32
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# define ITIMER_REAL 1
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# define ITIMER_PROF 2
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struct itimerval
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{
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struct timeval it_value;
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struct timeval it_interval;
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};
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int setitimer(int kind, const struct itimerval* itnew, struct itimerval* itold);
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# endif /* WIN32 */
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typedef struct wrapper_s
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{
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/* Data lock access */
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vlc_mutex_t lock;
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vlc_cond_t wait;
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/* Data used to spawn the real thread */
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vlc_thread_func_t func;
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void *p_data;
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/* Profiling timer passed to the thread */
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struct itimerval itimer;
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} wrapper_t;
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#endif /* GPROF */
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/*****************************************************************************
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* vlc_threads_init: initialize threads system
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*****************************************************************************/
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static __inline__ int vlc_threads_init( void )
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{
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#if defined( PTH_INIT_IN_PTH_H )
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return pth_init();
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#elif defined( ST_INIT_IN_ST_H )
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return st_init();
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#elif defined( WIN32 )
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return 0;
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#elif defined( PTHREAD_COND_T_IN_PTHREAD_H )
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return 0;
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#elif defined( HAVE_CTHREADS_H )
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return 0;
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#elif defined( HAVE_KERNEL_SCHEDULER_H )
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return 0;
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#endif
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}
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/*****************************************************************************
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* vlc_threads_end: stop threads system
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*****************************************************************************/
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static __inline__ int vlc_threads_end( void )
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{
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#if defined( PTH_INIT_IN_PTH_H )
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return pth_kill();
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#elif defined( ST_INIT_IN_ST_H )
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return 0;
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#elif defined( WIN32 )
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return 0;
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#elif defined( PTHREAD_COND_T_IN_PTHREAD_H )
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return 0;
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#elif defined( HAVE_CTHREADS_H )
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return 0;
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#elif defined( HAVE_KERNEL_SCHEDULER_H )
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return 0;
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#endif
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}
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/*****************************************************************************
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* vlc_mutex_init: initialize a mutex
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*****************************************************************************/
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static __inline__ int vlc_mutex_init( vlc_mutex_t *p_mutex )
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{
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#if defined( PTH_INIT_IN_PTH_H )
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return pth_mutex_init( p_mutex );
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#elif defined( ST_INIT_IN_ST_H )
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*p_mutex = st_mutex_new();
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return ( *p_mutex == NULL ) ? errno : 0;
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#elif defined( WIN32 )
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/* We use mutexes on WinNT/2K/XP because we can use the SignalObjectAndWait
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* function and have a 100% correct vlc_cond_wait() implementation.
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* As this function is not available on Win9x, we can use the faster
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* CriticalSections */
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if( (GetVersion() < 0x80000000) && !p_main_sys->b_fast_pthread )
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{
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/* We are running on NT/2K/XP, we can use SignalObjectAndWait */
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p_mutex->mutex = CreateMutex( 0, FALSE, 0 );
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return ( p_mutex->mutex ? 0 : 1 );
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}
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else
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{
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InitializeCriticalSection( &p_mutex->csection );
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p_mutex->mutex = NULL;
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return 0;
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}
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#elif defined( PTHREAD_COND_T_IN_PTHREAD_H )
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# if defined(DEBUG) && defined(SYS_LINUX)
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/* Create error-checking mutex to detect threads problems more easily. */
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pthread_mutexattr_t attr;
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int i_result;
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pthread_mutexattr_init( &attr );
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pthread_mutexattr_setkind_np( &attr, PTHREAD_MUTEX_ERRORCHECK_NP );
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i_result = pthread_mutex_init( p_mutex, &attr );
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pthread_mutexattr_destroy( &attr );
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return( i_result );
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# endif
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return pthread_mutex_init( p_mutex, NULL );
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#elif defined( HAVE_CTHREADS_H )
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mutex_init( p_mutex );
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return 0;
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#elif defined( HAVE_KERNEL_SCHEDULER_H )
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/* check the arguments and whether it's already been initialized */
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if( p_mutex == NULL )
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{
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return B_BAD_VALUE;
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}
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if( p_mutex->init == 9999 )
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{
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return EALREADY;
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}
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p_mutex->lock = create_sem( 1, "BeMutex" );
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if( p_mutex->lock < B_NO_ERROR )
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{
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return( -1 );
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}
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p_mutex->init = 9999;
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return B_OK;
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#endif
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}
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/*****************************************************************************
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* vlc_mutex_lock: lock a mutex
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*****************************************************************************/
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#ifdef DEBUG
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# define vlc_mutex_lock( P_MUTEX ) \
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_vlc_mutex_lock( __FILE__, __LINE__, P_MUTEX )
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#else
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# define vlc_mutex_lock( P_MUTEX ) \
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_vlc_mutex_lock( NULL, 0, P_MUTEX )
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#endif
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static __inline__ int _vlc_mutex_lock( char * psz_file, int i_line,
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vlc_mutex_t *p_mutex )
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{
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#if defined( PTH_INIT_IN_PTH_H )
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return pth_mutex_acquire( p_mutex, TRUE, NULL );
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#elif defined( ST_INIT_IN_ST_H )
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return st_mutex_lock( *p_mutex );
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#elif defined( WIN32 )
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if( p_mutex->mutex )
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{
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WaitForSingleObject( p_mutex->mutex, INFINITE );
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}
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else
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{
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EnterCriticalSection( &p_mutex->csection );
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}
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return 0;
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#elif defined( PTHREAD_COND_T_IN_PTHREAD_H )
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int i_return = pthread_mutex_lock( p_mutex );
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if( i_return )
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{
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intf_ErrMsg( "thread %d error: mutex_lock failed at %s:%d (%s)",
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pthread_self(), psz_file, i_line, strerror(i_return) );
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}
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return i_return;
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#elif defined( HAVE_CTHREADS_H )
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mutex_lock( p_mutex );
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return 0;
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#elif defined( HAVE_KERNEL_SCHEDULER_H )
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status_t err;
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if( !p_mutex )
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{
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return B_BAD_VALUE;
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}
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if( p_mutex->init < 2000 )
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{
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return B_NO_INIT;
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}
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err = acquire_sem( p_mutex->lock );
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return err;
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#endif
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}
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/*****************************************************************************
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* vlc_mutex_unlock: unlock a mutex
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*****************************************************************************/
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#ifdef DEBUG
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# define vlc_mutex_unlock( P_MUTEX ) \
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_vlc_mutex_unlock( __FILE__, __LINE__, P_MUTEX )
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#else
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# define vlc_mutex_unlock( P_MUTEX ) \
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_vlc_mutex_unlock( NULL, 0, P_MUTEX )
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#endif
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static __inline__ int _vlc_mutex_unlock( char * psz_file, int i_line,
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vlc_mutex_t *p_mutex )
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{
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#if defined( PTH_INIT_IN_PTH_H )
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return pth_mutex_release( p_mutex );
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#elif defined( ST_INIT_IN_ST_H )
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return st_mutex_unlock( *p_mutex );
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#elif defined( WIN32 )
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if( p_mutex->mutex )
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{
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ReleaseMutex( p_mutex->mutex );
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}
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else
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{
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LeaveCriticalSection( &p_mutex->csection );
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}
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return 0;
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#elif defined( PTHREAD_COND_T_IN_PTHREAD_H )
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int i_return = pthread_mutex_unlock( p_mutex );
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if( i_return )
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{
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intf_ErrMsg( "thread %d error: mutex_unlock failed at %s:%d (%s)",
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pthread_self(), psz_file, i_line, strerror(i_return) );
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}
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return i_return;
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#elif defined( HAVE_CTHREADS_H )
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mutex_unlock( p_mutex );
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return 0;
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#elif defined( HAVE_KERNEL_SCHEDULER_H )
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if( !p_mutex)
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{
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return B_BAD_VALUE;
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}
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if( p_mutex->init < 2000 )
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{
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return B_NO_INIT;
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}
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release_sem( p_mutex->lock );
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return B_OK;
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#endif
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}
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/*****************************************************************************
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* vlc_mutex_destroy: destroy a mutex
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*****************************************************************************/
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#ifdef DEBUG
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# define vlc_mutex_destroy( P_MUTEX ) \
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_vlc_mutex_destroy( __FILE__, __LINE__, P_MUTEX )
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#else
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# define vlc_mutex_destroy( P_MUTEX ) \
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_vlc_mutex_destroy( NULL, 0, P_MUTEX )
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#endif
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static __inline__ int _vlc_mutex_destroy( char * psz_file, int i_line,
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vlc_mutex_t *p_mutex )
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{
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#if defined( PTH_INIT_IN_PTH_H )
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return 0;
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#elif defined( ST_INIT_IN_ST_H )
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return st_mutex_destroy( *p_mutex );
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#elif defined( WIN32 )
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if( p_mutex->mutex )
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{
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CloseHandle( p_mutex->mutex );
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}
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else
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{
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DeleteCriticalSection( &p_mutex->csection );
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}
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return 0;
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#elif defined( PTHREAD_COND_T_IN_PTHREAD_H )
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int i_return = pthread_mutex_destroy( p_mutex );
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if( i_return )
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{
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intf_ErrMsg( "thread %d error: mutex_destroy failed at %s:%d (%s)",
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pthread_self(), psz_file, i_line, strerror(i_return) );
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}
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return i_return;
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#elif defined( HAVE_CTHREADS_H )
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return 0;
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#elif defined( HAVE_KERNEL_SCHEDULER_H )
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if( p_mutex->init == 9999 )
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{
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delete_sem( p_mutex->lock );
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}
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p_mutex->init = 0;
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return B_OK;
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#endif
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}
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/*****************************************************************************
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* vlc_cond_init: initialize a condition
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*****************************************************************************/
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static __inline__ int vlc_cond_init( vlc_cond_t *p_condvar )
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{
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#if defined( PTH_INIT_IN_PTH_H )
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return pth_cond_init( p_condvar );
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#elif defined( ST_INIT_IN_ST_H )
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*p_condvar = st_cond_new();
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return ( *p_condvar == NULL ) ? errno : 0;
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#elif defined( WIN32 )
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/* initialise counter */
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p_condvar->i_waiting_threads = 0;
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/* Create an auto-reset event. */
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p_condvar->signal = CreateEvent( NULL, /* no security */
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FALSE, /* auto-reset event */
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FALSE, /* non-signaled initially */
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NULL ); /* unnamed */
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return( !p_condvar->signal );
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#elif defined( PTHREAD_COND_T_IN_PTHREAD_H )
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return pthread_cond_init( p_condvar, NULL );
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#elif defined( HAVE_CTHREADS_H )
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/* condition_init() */
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spin_lock_init( &p_condvar->lock );
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cthread_queue_init( &p_condvar->queue );
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p_condvar->name = 0;
|
|
p_condvar->implications = 0;
|
|
|
|
return 0;
|
|
|
|
#elif defined( HAVE_KERNEL_SCHEDULER_H )
|
|
if( !p_condvar )
|
|
{
|
|
return B_BAD_VALUE;
|
|
}
|
|
|
|
if( p_condvar->init == 9999 )
|
|
{
|
|
return EALREADY;
|
|
}
|
|
|
|
p_condvar->thread = -1;
|
|
p_condvar->init = 9999;
|
|
return 0;
|
|
|
|
#endif
|
|
}
|
|
|
|
/*****************************************************************************
|
|
* vlc_cond_signal: start a thread on condition completion
|
|
*****************************************************************************/
|
|
static __inline__ int vlc_cond_signal( vlc_cond_t *p_condvar )
|
|
{
|
|
#if defined( PTH_INIT_IN_PTH_H )
|
|
return pth_cond_notify( p_condvar, FALSE );
|
|
|
|
#elif defined( ST_INIT_IN_ST_H )
|
|
return st_cond_signal( *p_condvar );
|
|
|
|
#elif defined( WIN32 )
|
|
/* Release one waiting thread if one is available. */
|
|
/* For this trick to work properly, the vlc_cond_signal must be surrounded
|
|
* by a mutex. This will prevent another thread from stealing the signal */
|
|
PulseEvent( p_condvar->signal );
|
|
return 0;
|
|
|
|
#elif defined( PTHREAD_COND_T_IN_PTHREAD_H )
|
|
return pthread_cond_signal( p_condvar );
|
|
|
|
#elif defined( HAVE_CTHREADS_H )
|
|
/* condition_signal() */
|
|
if ( p_condvar->queue.head || p_condvar->implications )
|
|
{
|
|
cond_signal( (condition_t)p_condvar );
|
|
}
|
|
return 0;
|
|
|
|
#elif defined( HAVE_KERNEL_SCHEDULER_H )
|
|
if( !p_condvar )
|
|
{
|
|
return B_BAD_VALUE;
|
|
}
|
|
|
|
if( p_condvar->init < 2000 )
|
|
{
|
|
return B_NO_INIT;
|
|
}
|
|
|
|
while( p_condvar->thread != -1 )
|
|
{
|
|
thread_info info;
|
|
if( get_thread_info(p_condvar->thread, &info) == B_BAD_VALUE )
|
|
{
|
|
return 0;
|
|
}
|
|
|
|
if( info.state != B_THREAD_SUSPENDED )
|
|
{
|
|
/* The waiting thread is not suspended so it could
|
|
* have been interrupted beetwen the unlock and the
|
|
* suspend_thread line. That is why we sleep a little
|
|
* before retesting p_condver->thread. */
|
|
snooze( 10000 );
|
|
}
|
|
else
|
|
{
|
|
/* Ok, we have to wake up that thread */
|
|
resume_thread( p_condvar->thread );
|
|
return 0;
|
|
}
|
|
}
|
|
return 0;
|
|
|
|
#endif
|
|
}
|
|
|
|
/*****************************************************************************
|
|
* vlc_cond_broadcast: start all threads waiting on condition completion
|
|
*****************************************************************************/
|
|
/*
|
|
* FIXME FIXME FIXME FIXME FIXME FIXME FIXME FIXME FIXME FIXME FIXME FIXME
|
|
* Only works with pthreads, you need to adapt it for others
|
|
* FIXME FIXME FIXME FIXME FIXME FIXME FIXME FIXME FIXME FIXME FIXME FIXME
|
|
*/
|
|
static __inline__ int vlc_cond_broadcast( vlc_cond_t *p_condvar )
|
|
{
|
|
#if defined( PTH_INIT_IN_PTH_H )
|
|
return pth_cond_notify( p_condvar, FALSE );
|
|
|
|
#elif defined( ST_INIT_IN_ST_H )
|
|
return st_cond_broadcast( p_condvar );
|
|
|
|
#elif defined( WIN32 )
|
|
/* Release all waiting threads. */
|
|
/* For this trick to work properly, the vlc_cond_signal must be surrounded
|
|
* by a mutex. This will prevent another thread from stealing the signal */
|
|
while( p_condvar->i_waiting_threads )
|
|
{
|
|
PulseEvent( p_condvar->signal );
|
|
Sleep( 1 ); /* deschedule the current thread */
|
|
}
|
|
return 0;
|
|
|
|
#elif defined( PTHREAD_COND_T_IN_PTHREAD_H )
|
|
return pthread_cond_broadcast( p_condvar );
|
|
|
|
#elif defined( HAVE_CTHREADS_H )
|
|
/* condition_signal() */
|
|
if ( p_condvar->queue.head || p_condvar->implications )
|
|
{
|
|
cond_signal( (condition_t)p_condvar );
|
|
}
|
|
return 0;
|
|
|
|
#elif defined( HAVE_KERNEL_SCHEDULER_H )
|
|
if( !p_condvar )
|
|
{
|
|
return B_BAD_VALUE;
|
|
}
|
|
|
|
if( p_condvar->init < 2000 )
|
|
{
|
|
return B_NO_INIT;
|
|
}
|
|
|
|
while( p_condvar->thread != -1 )
|
|
{
|
|
thread_info info;
|
|
if( get_thread_info(p_condvar->thread, &info) == B_BAD_VALUE )
|
|
{
|
|
return 0;
|
|
}
|
|
|
|
if( info.state != B_THREAD_SUSPENDED )
|
|
{
|
|
/* The waiting thread is not suspended so it could
|
|
* have been interrupted beetwen the unlock and the
|
|
* suspend_thread line. That is why we sleep a little
|
|
* before retesting p_condver->thread. */
|
|
snooze( 10000 );
|
|
}
|
|
else
|
|
{
|
|
/* Ok, we have to wake up that thread */
|
|
resume_thread( p_condvar->thread );
|
|
return 0;
|
|
}
|
|
}
|
|
return 0;
|
|
|
|
#endif
|
|
}
|
|
|
|
/*****************************************************************************
|
|
* vlc_cond_wait: wait until condition completion
|
|
*****************************************************************************/
|
|
#ifdef DEBUG
|
|
# define vlc_cond_wait( P_COND, P_MUTEX ) \
|
|
_vlc_cond_wait( __FILE__, __LINE__, P_COND, P_MUTEX )
|
|
#else
|
|
# define vlc_cond_wait( P_COND, P_MUTEX ) \
|
|
_vlc_cond_wait( NULL, 0, P_COND, P_MUTEX )
|
|
#endif
|
|
|
|
static __inline__ int _vlc_cond_wait( char * psz_file, int i_line,
|
|
vlc_cond_t *p_condvar,
|
|
vlc_mutex_t *p_mutex )
|
|
{
|
|
#if defined( PTH_INIT_IN_PTH_H )
|
|
return pth_cond_await( p_condvar, p_mutex, NULL );
|
|
|
|
#elif defined( ST_INIT_IN_ST_H )
|
|
int i_ret;
|
|
|
|
st_mutex_unlock( *p_mutex );
|
|
i_ret = st_cond_wait( *p_condvar );
|
|
st_mutex_lock( *p_mutex );
|
|
|
|
return i_ret;
|
|
|
|
#elif defined( WIN32 )
|
|
/* The ideal would be to use a function which atomically releases the
|
|
* mutex and initiate the waiting.
|
|
* Unfortunately only the SignalObjectAndWait function does this and it's
|
|
* only supported on WinNT/2K, furthermore it cannot take multiple
|
|
* events as parameters.
|
|
*
|
|
* The solution we use should however fulfill all our needs (even though
|
|
* it is not a correct pthreads implementation)
|
|
*/
|
|
int i_result;
|
|
|
|
p_condvar->i_waiting_threads ++;
|
|
|
|
if( p_mutex->mutex )
|
|
{
|
|
p_main_sys->SignalObjectAndWait( p_mutex->mutex, p_condvar->signal,
|
|
INFINITE, FALSE );
|
|
}
|
|
else
|
|
{
|
|
/* Release the mutex */
|
|
vlc_mutex_unlock( p_mutex );
|
|
i_result = WaitForSingleObject( p_condvar->signal, INFINITE);
|
|
p_condvar->i_waiting_threads --;
|
|
}
|
|
|
|
/* Reacquire the mutex before returning. */
|
|
vlc_mutex_lock( p_mutex );
|
|
|
|
return( i_result == WAIT_FAILED );
|
|
|
|
#elif defined( PTHREAD_COND_T_IN_PTHREAD_H )
|
|
|
|
#ifndef DEBUG
|
|
return pthread_cond_wait( p_condvar, p_mutex );
|
|
#else
|
|
/* In debug mode, timeout */
|
|
struct timeval now;
|
|
struct timespec timeout;
|
|
int i_result;
|
|
|
|
for( ; ; )
|
|
{
|
|
gettimeofday( &now, NULL );
|
|
timeout.tv_sec = now.tv_sec + THREAD_COND_TIMEOUT;
|
|
timeout.tv_nsec = now.tv_usec * 1000;
|
|
|
|
i_result = pthread_cond_timedwait( p_condvar, p_mutex, &timeout );
|
|
|
|
if( i_result == ETIMEDOUT )
|
|
{
|
|
intf_WarnMsg( 1, "thread %d warning: Possible deadlock detected in cond_wait at %s:%d (%s)",
|
|
pthread_self(), psz_file, i_line, strerror(i_result) );
|
|
continue;
|
|
}
|
|
|
|
if( i_result )
|
|
{
|
|
intf_ErrMsg( "thread %d error: cond_wait failed at %s:%d (%s)",
|
|
pthread_self(), psz_file, i_line, strerror(i_result) );
|
|
}
|
|
return( i_result );
|
|
}
|
|
#endif
|
|
|
|
#elif defined( HAVE_CTHREADS_H )
|
|
condition_wait( (condition_t)p_condvar, (mutex_t)p_mutex );
|
|
return 0;
|
|
|
|
#elif defined( HAVE_KERNEL_SCHEDULER_H )
|
|
if( !p_condvar )
|
|
{
|
|
return B_BAD_VALUE;
|
|
}
|
|
|
|
if( !p_mutex )
|
|
{
|
|
return B_BAD_VALUE;
|
|
}
|
|
|
|
if( p_condvar->init < 2000 )
|
|
{
|
|
return B_NO_INIT;
|
|
}
|
|
|
|
/* The p_condvar->thread var is initialized before the unlock because
|
|
* it enables to identify when the thread is interrupted beetwen the
|
|
* unlock line and the suspend_thread line */
|
|
p_condvar->thread = find_thread( NULL );
|
|
vlc_mutex_unlock( p_mutex );
|
|
suspend_thread( p_condvar->thread );
|
|
p_condvar->thread = -1;
|
|
|
|
vlc_mutex_lock( p_mutex );
|
|
return 0;
|
|
|
|
#endif
|
|
}
|
|
|
|
/*****************************************************************************
|
|
* vlc_cond_destroy: destroy a condition
|
|
*****************************************************************************/
|
|
#ifdef DEBUG
|
|
# define vlc_cond_destroy( P_COND ) \
|
|
_vlc_cond_destroy( __FILE__, __LINE__, P_COND )
|
|
#else
|
|
# define vlc_cond_destroy( P_COND ) \
|
|
_vlc_cond_destroy( NULL, 0, P_COND )
|
|
#endif
|
|
|
|
static __inline__ int _vlc_cond_destroy( char * psz_file, int i_line,
|
|
vlc_cond_t *p_condvar )
|
|
{
|
|
#if defined( PTH_INIT_IN_PTH_H )
|
|
return 0;
|
|
|
|
#elif defined( ST_INIT_IN_ST_H )
|
|
return st_cond_destroy( *p_condvar );
|
|
|
|
#elif defined( WIN32 )
|
|
return( !CloseHandle( p_condvar->signal ) );
|
|
|
|
#elif defined( PTHREAD_COND_T_IN_PTHREAD_H )
|
|
int i_result = pthread_cond_destroy( p_condvar );
|
|
if( i_result )
|
|
{
|
|
intf_ErrMsg( "thread %d error: cond_destroy failed at %s:%d (%s)",
|
|
pthread_self(), psz_file, i_line, strerror(i_result) );
|
|
}
|
|
return i_result;
|
|
|
|
#elif defined( HAVE_CTHREADS_H )
|
|
return 0;
|
|
|
|
#elif defined( HAVE_KERNEL_SCHEDULER_H )
|
|
p_condvar->init = 0;
|
|
return 0;
|
|
|
|
#endif
|
|
}
|
|
|
|
/*****************************************************************************
|
|
* vlc_thread_create: create a thread
|
|
*****************************************************************************/
|
|
#ifdef DEBUG
|
|
# define vlc_thread_create( P_THREAD, PSZ_NAME, FUNC, P_DATA ) \
|
|
_vlc_thread_create( __FILE__, __LINE__, P_THREAD, PSZ_NAME, FUNC, P_DATA )
|
|
#else
|
|
# define vlc_thread_create( P_THREAD, PSZ_NAME, FUNC, P_DATA ) \
|
|
_vlc_thread_create( NULL, 0, P_THREAD, PSZ_NAME, FUNC, P_DATA )
|
|
#endif
|
|
|
|
static __inline__ int _vlc_thread_create( char * psz_file, int i_line,
|
|
vlc_thread_t *p_thread,
|
|
char *psz_name,
|
|
vlc_thread_func_t func,
|
|
void *p_data )
|
|
{
|
|
int i_ret;
|
|
|
|
#ifdef GPROF
|
|
wrapper_t wrapper;
|
|
|
|
/* Initialize the wrapper structure */
|
|
wrapper.func = func;
|
|
wrapper.p_data = p_data;
|
|
getitimer( ITIMER_PROF, &wrapper.itimer );
|
|
vlc_mutex_init( &wrapper.lock );
|
|
vlc_cond_init( &wrapper.wait );
|
|
vlc_mutex_lock( &wrapper.lock );
|
|
|
|
/* Alter user-passed data so that we call the wrapper instead
|
|
* of the real function */
|
|
p_data = &wrapper;
|
|
func = vlc_thread_wrapper;
|
|
#endif
|
|
|
|
#if defined( PTH_INIT_IN_PTH_H )
|
|
*p_thread = pth_spawn( PTH_ATTR_DEFAULT, func, p_data );
|
|
i_ret = ( p_thread == NULL );
|
|
|
|
#elif defined( ST_INIT_IN_ST_H )
|
|
*p_thread = st_thread_create( func, p_data, 1, 0 );
|
|
i_ret = ( p_thread == NULL );
|
|
|
|
#elif defined( WIN32 )
|
|
unsigned threadID;
|
|
/* When using the MSVCRT C library you have to use the _beginthreadex
|
|
* function instead of CreateThread, otherwise you'll end up with memory
|
|
* leaks and the signal functions not working */
|
|
*p_thread = (HANDLE)_beginthreadex( NULL, 0, (PTHREAD_START) func,
|
|
p_data, 0, &threadID );
|
|
|
|
i_ret = ( *p_thread ? 0 : 1 );
|
|
|
|
#elif defined( PTHREAD_COND_T_IN_PTHREAD_H )
|
|
i_ret = pthread_create( p_thread, NULL, func, p_data );
|
|
|
|
#elif defined( HAVE_CTHREADS_H )
|
|
*p_thread = cthread_fork( (cthread_fn_t)func, (any_t)p_data );
|
|
i_ret = 0;
|
|
|
|
#elif defined( HAVE_KERNEL_SCHEDULER_H )
|
|
*p_thread = spawn_thread( (thread_func)func, psz_name,
|
|
B_NORMAL_PRIORITY, p_data );
|
|
i_ret = resume_thread( *p_thread );
|
|
|
|
#endif
|
|
|
|
#ifdef GPROF
|
|
if( i_ret == 0 )
|
|
{
|
|
vlc_cond_wait( &wrapper.wait, &wrapper.lock );
|
|
}
|
|
|
|
vlc_mutex_unlock( &wrapper.lock );
|
|
vlc_mutex_destroy( &wrapper.lock );
|
|
vlc_cond_destroy( &wrapper.wait );
|
|
#endif
|
|
|
|
if( i_ret == 0 )
|
|
{
|
|
intf_WarnMsg( 2, "thread info: %d (%s) has been created (%s:%d)",
|
|
*p_thread, psz_name, psz_file, i_line );
|
|
}
|
|
else
|
|
{
|
|
intf_ErrMsg( "thread error: %s couldn't be created at %s:%d (%s)",
|
|
psz_name, psz_file, i_line, strerror(i_ret) );
|
|
}
|
|
|
|
return i_ret;
|
|
}
|
|
|
|
/*****************************************************************************
|
|
* vlc_thread_exit: terminate a thread
|
|
*****************************************************************************/
|
|
static __inline__ void vlc_thread_exit( void )
|
|
{
|
|
#if defined( PTH_INIT_IN_PTH_H )
|
|
pth_exit( 0 );
|
|
|
|
#elif defined( ST_INIT_IN_ST_H )
|
|
int result;
|
|
st_thread_exit( &result );
|
|
|
|
#elif defined( WIN32 )
|
|
/* For now we don't close the thread handles (because of race conditions).
|
|
* Need to be looked at. */
|
|
_endthreadex(0);
|
|
|
|
#elif defined( PTHREAD_COND_T_IN_PTHREAD_H )
|
|
pthread_exit( 0 );
|
|
|
|
#elif defined( HAVE_CTHREADS_H )
|
|
int result;
|
|
cthread_exit( &result );
|
|
|
|
#elif defined( HAVE_KERNEL_SCHEDULER_H )
|
|
exit_thread( 0 );
|
|
|
|
#endif
|
|
}
|
|
|
|
/*****************************************************************************
|
|
* vlc_thread_join: wait until a thread exits
|
|
*****************************************************************************/
|
|
#ifdef DEBUG
|
|
# define vlc_thread_join( THREAD ) \
|
|
_vlc_thread_join( __FILE__, __LINE__, THREAD )
|
|
#else
|
|
# define vlc_thread_join( THREAD ) \
|
|
_vlc_thread_join( NULL, 0, THREAD )
|
|
#endif
|
|
|
|
static __inline__ void _vlc_thread_join( char * psz_file, int i_line,
|
|
vlc_thread_t thread )
|
|
{
|
|
int i_ret = 0;
|
|
|
|
#if defined( PTH_INIT_IN_PTH_H )
|
|
i_ret = pth_join( thread, NULL );
|
|
|
|
#elif defined( ST_INIT_IN_ST_H )
|
|
i_ret = st_thread_join( thread, NULL );
|
|
|
|
#elif defined( WIN32 )
|
|
WaitForSingleObject( thread, INFINITE );
|
|
|
|
#elif defined( PTHREAD_COND_T_IN_PTHREAD_H )
|
|
i_ret = pthread_join( thread, NULL );
|
|
|
|
#elif defined( HAVE_CTHREADS_H )
|
|
cthread_join( thread );
|
|
i_ret = 1;
|
|
|
|
#elif defined( HAVE_KERNEL_SCHEDULER_H )
|
|
int32 exit_value;
|
|
wait_for_thread( thread, &exit_value );
|
|
|
|
#endif
|
|
|
|
if( i_ret )
|
|
{
|
|
intf_ErrMsg( "thread error: thread_join(%d) failed at %s:%d (%s)",
|
|
thread, psz_file, i_line, strerror(i_ret) );
|
|
}
|
|
else
|
|
{
|
|
intf_WarnMsg( 2, "thread info: %d has been joined (%s:%d)",
|
|
thread, psz_file, i_line );
|
|
}
|
|
}
|
|
|
|
#ifdef GPROF
|
|
static void *vlc_thread_wrapper( void *p_wrapper )
|
|
{
|
|
/* Put user data in thread-local variables */
|
|
void * p_data = ((wrapper_t*)p_wrapper)->p_data;
|
|
vlc_thread_func_t func = ((wrapper_t*)p_wrapper)->func;
|
|
|
|
/* Set the profile timer value */
|
|
setitimer( ITIMER_PROF, &((wrapper_t*)p_wrapper)->itimer, NULL );
|
|
|
|
/* Tell the calling thread that we don't need its data anymore */
|
|
vlc_mutex_lock( &((wrapper_t*)p_wrapper)->lock );
|
|
vlc_cond_signal( &((wrapper_t*)p_wrapper)->wait );
|
|
vlc_mutex_unlock( &((wrapper_t*)p_wrapper)->lock );
|
|
|
|
/* Call the real function */
|
|
return func( p_data );
|
|
}
|
|
#endif
|