You can not select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
788 lines
22 KiB
788 lines
22 KiB
/*****************************************************************************
|
|
* threads.h : threads implementation for the VideoLAN client
|
|
* This header provides a portable threads implementation.
|
|
*****************************************************************************
|
|
* Copyright (C) 1999, 2000 VideoLAN
|
|
* $Id: threads.h,v 1.20 2001/07/18 14:21:00 massiot Exp $
|
|
*
|
|
* Authors: Jean-Marc Dressler <polux@via.ecp.fr>
|
|
* Samuel Hocevar <sam@via.ecp.fr>
|
|
*
|
|
* This program is free software; you can redistribute it and/or modify
|
|
* it under the terms of the GNU General Public License as published by
|
|
* the Free Software Foundation; either version 2 of the License, or
|
|
* (at your option) any later version.
|
|
*
|
|
* This program is distributed in the hope that it will be useful,
|
|
* but WITHOUT ANY WARRANTY; without even the implied warranty of
|
|
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
|
|
* GNU General Public License for more details.
|
|
*
|
|
* You should have received a copy of the GNU General Public License
|
|
* along with this program; if not, write to the Free Software
|
|
* Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111, USA.
|
|
*****************************************************************************/
|
|
|
|
#include <stdio.h>
|
|
|
|
#ifdef PROFILING
|
|
# include <sys/time.h>
|
|
#endif
|
|
|
|
#if defined( PTH_INIT_IN_PTH_H ) /* GNU Pth */
|
|
# include <pth.h>
|
|
|
|
#elif defined( PTHREAD_COND_T_IN_PTHREAD_H ) /* pthreads (like Linux & BSD) */
|
|
# include <pthread.h>
|
|
|
|
#elif defined( HAVE_CTHREADS_H ) /* GNUMach */
|
|
# include <cthreads.h>
|
|
|
|
#elif defined( HAVE_KERNEL_SCHEDULER_H ) /* BeOS */
|
|
# undef MAX
|
|
# undef MIN
|
|
# include <kernel/OS.h>
|
|
# include <kernel/scheduler.h>
|
|
# include <byteorder.h>
|
|
|
|
#elif defined( WIN32 ) /* Win32 with MinGW32 compiler */
|
|
# include <windows.h>
|
|
# include <process.h>
|
|
|
|
#else
|
|
# error no threads available on your system !
|
|
|
|
#endif
|
|
|
|
/*****************************************************************************
|
|
* Constants
|
|
*****************************************************************************
|
|
* These constants are used by all threads in *_CreateThread() and
|
|
* *_DestroyThreads() functions. Since those calls are non-blocking, an integer
|
|
* value is used as a shared flag to represent the status of the thread.
|
|
*****************************************************************************/
|
|
|
|
/* Void status - this value can be used to make sure no operation is currently
|
|
* in progress on the concerned thread in an array of recorded threads */
|
|
#define THREAD_NOP 0 /* nothing happened */
|
|
|
|
/* Creation status */
|
|
#define THREAD_CREATE 10 /* thread is initializing */
|
|
#define THREAD_START 11 /* thread has forked */
|
|
#define THREAD_READY 19 /* thread is ready */
|
|
|
|
/* Destructions status */
|
|
#define THREAD_DESTROY 20 /* destruction order has been sent */
|
|
#define THREAD_END 21 /* destruction order has been received */
|
|
#define THREAD_OVER 29 /* thread does not exist any more */
|
|
|
|
/* Error status */
|
|
#define THREAD_ERROR 30 /* an error occured */
|
|
#define THREAD_FATAL 31 /* an fatal error occured - program must end */
|
|
|
|
/*****************************************************************************
|
|
* Types definition
|
|
*****************************************************************************/
|
|
|
|
#if defined( PTH_INIT_IN_PTH_H )
|
|
typedef pth_t vlc_thread_t;
|
|
typedef pth_mutex_t vlc_mutex_t;
|
|
typedef pth_cond_t vlc_cond_t;
|
|
|
|
#elif defined( PTHREAD_COND_T_IN_PTHREAD_H )
|
|
typedef pthread_t vlc_thread_t;
|
|
typedef pthread_mutex_t vlc_mutex_t;
|
|
typedef pthread_cond_t vlc_cond_t;
|
|
|
|
#elif defined( HAVE_CTHREADS_H )
|
|
typedef cthread_t vlc_thread_t;
|
|
|
|
/* Those structs are the ones defined in /include/cthreads.h but we need
|
|
* to handle (*foo) where foo is a (mutex_t) while they handle (foo) where
|
|
* foo is a (mutex_t*) */
|
|
typedef struct s_mutex {
|
|
spin_lock_t held;
|
|
spin_lock_t lock;
|
|
char *name;
|
|
struct cthread_queue queue;
|
|
} vlc_mutex_t;
|
|
|
|
typedef struct s_condition {
|
|
spin_lock_t lock;
|
|
struct cthread_queue queue;
|
|
char *name;
|
|
struct cond_imp *implications;
|
|
} vlc_cond_t;
|
|
|
|
#elif defined( HAVE_KERNEL_SCHEDULER_H )
|
|
/* This is the BeOS implementation of the vlc threads, note that the mutex is
|
|
* not a real mutex and the cond_var is not like a pthread cond_var but it is
|
|
* enough for what wee need */
|
|
|
|
typedef thread_id vlc_thread_t;
|
|
|
|
typedef struct
|
|
{
|
|
int32 init;
|
|
sem_id lock;
|
|
} vlc_mutex_t;
|
|
|
|
typedef struct
|
|
{
|
|
int32 init;
|
|
thread_id thread;
|
|
} vlc_cond_t;
|
|
|
|
#elif defined( WIN32 )
|
|
typedef HANDLE vlc_thread_t;
|
|
typedef HANDLE vlc_mutex_t;
|
|
typedef HANDLE vlc_cond_t;
|
|
typedef unsigned (__stdcall *PTHREAD_START) (void *);
|
|
|
|
#endif
|
|
|
|
typedef void *(*vlc_thread_func_t)(void *p_data);
|
|
|
|
/*****************************************************************************
|
|
* Prototypes
|
|
*****************************************************************************/
|
|
|
|
static __inline__ int vlc_threads_init ( void );
|
|
static __inline__ int vlc_threads_end ( void );
|
|
|
|
static __inline__ int vlc_mutex_init ( vlc_mutex_t * );
|
|
static __inline__ int vlc_mutex_lock ( vlc_mutex_t * );
|
|
static __inline__ int vlc_mutex_unlock ( vlc_mutex_t * );
|
|
static __inline__ int vlc_mutex_destroy ( vlc_mutex_t * );
|
|
|
|
static __inline__ int vlc_cond_init ( vlc_cond_t * );
|
|
static __inline__ int vlc_cond_signal ( vlc_cond_t * );
|
|
static __inline__ int vlc_cond_wait ( vlc_cond_t *, vlc_mutex_t * );
|
|
static __inline__ int vlc_cond_destroy ( vlc_cond_t * );
|
|
|
|
static __inline__ int vlc_thread_create ( vlc_thread_t *, char *,
|
|
vlc_thread_func_t, void * );
|
|
static __inline__ void vlc_thread_exit ( void );
|
|
static __inline__ void vlc_thread_join ( vlc_thread_t );
|
|
|
|
#if 0
|
|
static __inline__ int vlc_cond_timedwait( vlc_cond_t *, vlc_mutex_t *,
|
|
mtime_t );
|
|
#endif
|
|
|
|
#ifdef PROFILING
|
|
/* Wrapper function for profiling */
|
|
static void * vlc_thread_wrapper ( void *p_wrapper );
|
|
|
|
typedef struct wrapper_s
|
|
{
|
|
/* Data lock access */
|
|
vlc_mutex_t lock;
|
|
vlc_cond_t wait;
|
|
|
|
/* Data used to spawn the real thread */
|
|
vlc_thread_func_t func;
|
|
void *p_data;
|
|
|
|
/* Profiling timer passed to the thread */
|
|
struct itimerval itimer;
|
|
|
|
} wrapper_t;
|
|
#endif
|
|
|
|
/*****************************************************************************
|
|
* vlc_threads_init: initialize threads system
|
|
*****************************************************************************/
|
|
static __inline__ int vlc_threads_init( void )
|
|
{
|
|
#if defined( PTH_INIT_IN_PTH_H )
|
|
return pth_init();
|
|
|
|
#elif defined( PTHREAD_COND_T_IN_PTHREAD_H )
|
|
return 0;
|
|
|
|
#elif defined( HAVE_CTHREADS_H )
|
|
return 0;
|
|
|
|
#elif defined( HAVE_KERNEL_SCHEDULER_H )
|
|
return 0;
|
|
|
|
#elif defined( WIN32 )
|
|
return 0;
|
|
|
|
#endif
|
|
}
|
|
|
|
/*****************************************************************************
|
|
* vlc_threads_end: stop threads system
|
|
*****************************************************************************/
|
|
static __inline__ int vlc_threads_end( void )
|
|
{
|
|
#if defined( PTH_INIT_IN_PTH_H )
|
|
return pth_kill();
|
|
|
|
#elif defined( PTHREAD_COND_T_IN_PTHREAD_H )
|
|
return 0;
|
|
|
|
#elif defined( HAVE_CTHREADS_H )
|
|
return 0;
|
|
|
|
#elif defined( HAVE_KERNEL_SCHEDULER_H )
|
|
return 0;
|
|
|
|
#elif defined( WIN32 )
|
|
return 0;
|
|
|
|
#endif
|
|
}
|
|
|
|
/*****************************************************************************
|
|
* vlc_mutex_init: initialize a mutex
|
|
*****************************************************************************/
|
|
static __inline__ int vlc_mutex_init( vlc_mutex_t *p_mutex )
|
|
{
|
|
#if defined( PTH_INIT_IN_PTH_H )
|
|
return pth_mutex_init( p_mutex );
|
|
|
|
#elif defined( PTHREAD_COND_T_IN_PTHREAD_H )
|
|
return pthread_mutex_init( p_mutex, NULL );
|
|
|
|
#elif defined( HAVE_CTHREADS_H )
|
|
mutex_init( p_mutex );
|
|
return 0;
|
|
|
|
#elif defined( HAVE_KERNEL_SCHEDULER_H )
|
|
|
|
/* check the arguments and whether it's already been initialized */
|
|
if( p_mutex == NULL )
|
|
{
|
|
return B_BAD_VALUE;
|
|
}
|
|
|
|
if( p_mutex->init == 9999 )
|
|
{
|
|
return EALREADY;
|
|
}
|
|
|
|
p_mutex->lock = create_sem( 1, "BeMutex" );
|
|
if( p_mutex->lock < B_NO_ERROR )
|
|
{
|
|
return( -1 );
|
|
}
|
|
|
|
p_mutex->init = 9999;
|
|
return B_OK;
|
|
|
|
#elif defined( WIN32 )
|
|
*p_mutex = CreateMutex(0,FALSE,0);
|
|
return (*p_mutex?0:1);
|
|
|
|
#endif
|
|
}
|
|
|
|
/*****************************************************************************
|
|
* vlc_mutex_lock: lock a mutex
|
|
*****************************************************************************/
|
|
static __inline__ int vlc_mutex_lock( vlc_mutex_t *p_mutex )
|
|
{
|
|
#if defined( PTH_INIT_IN_PTH_H )
|
|
return pth_mutex_acquire( p_mutex, TRUE, NULL );
|
|
|
|
#elif defined( PTHREAD_COND_T_IN_PTHREAD_H )
|
|
return pthread_mutex_lock( p_mutex );
|
|
|
|
#elif defined( HAVE_CTHREADS_H )
|
|
mutex_lock( p_mutex );
|
|
return 0;
|
|
|
|
#elif defined( HAVE_KERNEL_SCHEDULER_H )
|
|
status_t err;
|
|
|
|
if( !p_mutex )
|
|
{
|
|
return B_BAD_VALUE;
|
|
}
|
|
|
|
if( p_mutex->init < 2000 )
|
|
{
|
|
return B_NO_INIT;
|
|
}
|
|
|
|
err = acquire_sem( p_mutex->lock );
|
|
return err;
|
|
|
|
#elif defined( WIN32 )
|
|
WaitForSingleObject( *p_mutex, INFINITE );
|
|
return 0;
|
|
|
|
#endif
|
|
}
|
|
|
|
/*****************************************************************************
|
|
* vlc_mutex_unlock: unlock a mutex
|
|
*****************************************************************************/
|
|
static __inline__ int vlc_mutex_unlock( vlc_mutex_t *p_mutex )
|
|
{
|
|
#if defined( PTH_INIT_IN_PTH_H )
|
|
return pth_mutex_release( p_mutex );
|
|
|
|
#elif defined( PTHREAD_COND_T_IN_PTHREAD_H )
|
|
return pthread_mutex_unlock( p_mutex );
|
|
|
|
#elif defined( HAVE_CTHREADS_H )
|
|
mutex_unlock( p_mutex );
|
|
return 0;
|
|
|
|
#elif defined( HAVE_KERNEL_SCHEDULER_H )
|
|
if( !p_mutex)
|
|
{
|
|
return B_BAD_VALUE;
|
|
}
|
|
|
|
if( p_mutex->init < 2000 )
|
|
{
|
|
return B_NO_INIT;
|
|
}
|
|
|
|
release_sem( p_mutex->lock );
|
|
return B_OK;
|
|
|
|
#elif defined( WIN32 )
|
|
ReleaseMutex( *p_mutex );
|
|
return 0;
|
|
|
|
#endif
|
|
}
|
|
|
|
/*****************************************************************************
|
|
* vlc_mutex_destroy: destroy a mutex
|
|
*****************************************************************************/
|
|
static __inline__ int vlc_mutex_destroy( vlc_mutex_t *p_mutex )
|
|
{
|
|
#if defined( PTH_INIT_IN_PTH_H )
|
|
return 0;
|
|
|
|
#elif defined( PTHREAD_COND_T_IN_PTHREAD_H )
|
|
return pthread_mutex_destroy( p_mutex );
|
|
|
|
#elif defined( HAVE_KERNEL_SCHEDULER_H )
|
|
if( p_mutex->init == 9999 )
|
|
{
|
|
delete_sem( p_mutex->lock );
|
|
}
|
|
|
|
p_mutex->init = 0;
|
|
return B_OK;
|
|
|
|
#elif defined( WIN32 )
|
|
CloseHandle(*p_mutex);
|
|
return 0;
|
|
|
|
#endif
|
|
}
|
|
|
|
/*****************************************************************************
|
|
* vlc_cond_init: initialize a condition
|
|
*****************************************************************************/
|
|
static __inline__ int vlc_cond_init( vlc_cond_t *p_condvar )
|
|
{
|
|
#if defined( PTH_INIT_IN_PTH_H )
|
|
return pth_cond_init( p_condvar );
|
|
|
|
#elif defined( PTHREAD_COND_T_IN_PTHREAD_H )
|
|
return pthread_cond_init( p_condvar, NULL );
|
|
|
|
#elif defined( HAVE_CTHREADS_H )
|
|
/* condition_init() */
|
|
spin_lock_init( &p_condvar->lock );
|
|
cthread_queue_init( &p_condvar->queue );
|
|
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;
|
|
|
|
#elif defined( WIN32 )
|
|
/* Create an auto-reset event. */
|
|
*p_condvar = CreateEvent( NULL, /* no security */
|
|
FALSE, /* auto-reset event */
|
|
FALSE, /* non-signaled initially */
|
|
NULL ); /* unnamed */
|
|
|
|
return( *p_condvar ? 0 : 1 );
|
|
|
|
#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( 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;
|
|
|
|
#elif defined( WIN32 )
|
|
/* Try to release one waiting thread. */
|
|
PulseEvent ( *p_condvar );
|
|
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( 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;
|
|
|
|
#elif defined( WIN32 )
|
|
/* Try to release one waiting thread. */
|
|
PulseEvent ( *p_condvar );
|
|
return 0;
|
|
|
|
#endif
|
|
}
|
|
|
|
/*****************************************************************************
|
|
* vlc_cond_wait: wait until condition completion
|
|
*****************************************************************************/
|
|
static __inline__ int vlc_cond_wait( 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( PTHREAD_COND_T_IN_PTHREAD_H )
|
|
return pthread_cond_wait( p_condvar, p_mutex );
|
|
|
|
#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;
|
|
|
|
#elif defined( WIN32 )
|
|
/* Release the <external_mutex> here and wait for the event
|
|
* to become signaled, due to <pthread_cond_signal> being
|
|
* called. */
|
|
vlc_mutex_unlock( p_mutex );
|
|
|
|
WaitForSingleObject( *p_condvar, INFINITE );
|
|
|
|
/* Reacquire the mutex before returning. */
|
|
vlc_mutex_lock( p_mutex );
|
|
return 0;
|
|
|
|
#endif
|
|
}
|
|
|
|
/*****************************************************************************
|
|
* vlc_cond_destroy: destroy a condition
|
|
*****************************************************************************/
|
|
static __inline__ int vlc_cond_destroy( vlc_cond_t *p_condvar )
|
|
{
|
|
#if defined( PTH_INIT_IN_PTH_H )
|
|
return 0;
|
|
|
|
#elif defined( PTHREAD_COND_T_IN_PTHREAD_H )
|
|
return pthread_cond_destroy( p_condvar );
|
|
|
|
#elif defined( HAVE_KERNEL_SCHEDULER_H )
|
|
p_condvar->init = 0;
|
|
return 0;
|
|
|
|
#elif defined( WIN32 )
|
|
CloseHandle( *p_condvar );
|
|
return 0;
|
|
|
|
#endif
|
|
}
|
|
|
|
/*****************************************************************************
|
|
* vlc_thread_create: create a thread
|
|
*****************************************************************************/
|
|
static __inline__ int vlc_thread_create( vlc_thread_t *p_thread,
|
|
char *psz_name, vlc_thread_func_t func,
|
|
void *p_data )
|
|
{
|
|
int i_ret;
|
|
|
|
#ifdef PROFILING
|
|
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( 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 );
|
|
|
|
#elif defined( WIN32 )
|
|
#if 0
|
|
DWORD threadID;
|
|
/* This method is not recommended when using the MSVCRT C library,
|
|
* so we'll have to use _beginthreadex instead */
|
|
*p_thread = CreateThread(0, 0, (LPTHREAD_START_ROUTINE) func,
|
|
p_data, 0, &threadID);
|
|
#endif
|
|
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 function not working */
|
|
*p_thread = (HANDLE)_beginthreadex(NULL, 0, (PTHREAD_START) func,
|
|
p_data, 0, &threadID);
|
|
|
|
i_ret = ( *p_thread ? 0 : 1 );
|
|
|
|
#endif
|
|
|
|
#ifdef PROFILING
|
|
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
|
|
|
|
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( 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 );
|
|
|
|
#elif defined( WIN32 )
|
|
#if 0
|
|
ExitThread( 0 );
|
|
#endif
|
|
/* For now we don't close the thread handles (because of race conditions).
|
|
* Need to be looked at. */
|
|
_endthreadex(0);
|
|
|
|
#endif
|
|
}
|
|
|
|
/*****************************************************************************
|
|
* vlc_thread_join: wait until a thread exits
|
|
*****************************************************************************/
|
|
static __inline__ void vlc_thread_join( vlc_thread_t thread )
|
|
{
|
|
#if defined( PTH_INIT_IN_PTH_H )
|
|
pth_join( thread, NULL );
|
|
|
|
#elif defined( PTHREAD_COND_T_IN_PTHREAD_H )
|
|
pthread_join( thread, NULL );
|
|
|
|
#elif defined( HAVE_CTHREADS_H )
|
|
cthread_join( thread );
|
|
|
|
#elif defined( HAVE_KERNEL_SCHEDULER_H )
|
|
int32 exit_value;
|
|
wait_for_thread( thread, &exit_value );
|
|
|
|
#elif defined( WIN32 )
|
|
WaitForSingleObject( thread, INFINITE);
|
|
|
|
#endif
|
|
}
|
|
|
|
#ifdef PROFILING
|
|
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
|
|
|
|
|