/*****************************************************************************
* threads.c : threads implementation for the VideoLAN client
*****************************************************************************
- * Copyright (C) 1999, 2000, 2001, 2002 VideoLAN
- * $Id: threads.c,v 1.8 2002/07/05 11:18:56 sam Exp $
+ * Copyright (C) 1999-2007 the VideoLAN team
+ * $Id$
*
* Authors: Jean-Marc Dressler <polux@via.ecp.fr>
* Samuel Hocevar <sam@zoy.org>
* Gildas Bazin <gbazin@netcourrier.com>
+ * Clément Sténac
*
* 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
*
* 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.
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston MA 02110-1301, USA.
*****************************************************************************/
#include <vlc/vlc.h>
+#include "libvlc.h"
+
#define VLC_THREADS_UNINITIALIZED 0
#define VLC_THREADS_PENDING 1
#define VLC_THREADS_ERROR 2
#define VLC_THREADS_READY 3
/*****************************************************************************
- * Prototype for GPROF wrapper
+ * Global mutex for lazy initialization of the threads system
*****************************************************************************/
-#ifdef GPROF
-/* Wrapper function for profiling */
-static void * vlc_thread_wrapper ( void *p_wrapper );
-
-# ifdef WIN32
+static volatile unsigned i_initializations = 0;
+static volatile int i_status = VLC_THREADS_UNINITIALIZED;
+static vlc_object_t *p_root;
-# define ITIMER_REAL 1
-# define ITIMER_PROF 2
+#if defined( PTH_INIT_IN_PTH_H )
+#elif defined( ST_INIT_IN_ST_H )
+#elif defined( UNDER_CE )
+#elif defined( WIN32 )
-struct itimerval
-{
- struct timeval it_value;
- struct timeval it_interval;
-};
+/* following is only available on NT/2000/XP and above */
+static SIGNALOBJECTANDWAIT pf_SignalObjectAndWait = NULL;
+
+/*
+** On Windows NT/2K/XP we use a slow mutex implementation but which
+** allows us to correctly implement condition variables.
+** You can also use the faster Win9x implementation but you might
+** experience problems with it.
+*/
+static vlc_bool_t b_fast_mutex = VLC_FALSE;
+/*
+** On Windows 9x/Me you can use a fast but incorrect condition variables
+** implementation (more precisely there is a possibility for a race
+** condition to happen).
+** However it is possible to use slower alternatives which are more robust.
+** Currently you can choose between implementation 0 (which is the
+** fastest but slightly incorrect), 1 (default) and 2.
+*/
+static int i_win9x_cv = 1;
-int setitimer(int kind, const struct itimerval* itnew, struct itimerval* itold);
-# endif /* WIN32 */
+#elif defined( HAVE_KERNEL_SCHEDULER_H )
+#elif defined( PTHREAD_COND_T_IN_PTHREAD_H )
+static pthread_mutex_t once_mutex = PTHREAD_MUTEX_INITIALIZER;
+#elif defined( HAVE_CTHREADS_H )
+#endif
-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 /* GPROF */
+vlc_threadvar_t msg_context_global_key;
/*****************************************************************************
* vlc_threads_init: initialize threads system
+ *****************************************************************************
+ * This function requires lazy initialization of a global lock in order to
+ * keep the library really thread-safe. Some architectures don't support this
+ * and thus do not guarantee the complete reentrancy.
*****************************************************************************/
int __vlc_threads_init( vlc_object_t *p_this )
{
- /* FIXME: this is definitely _not_ threadsafe, but at least it works
- * under all implementations. We should for instance use pthread_once
- * for lazy initialization of the global lock. */
- static int i_status = VLC_THREADS_UNINITIALIZED;
- int i_ret;
+ libvlc_global_data_t *p_libvlc_global = (libvlc_global_data_t *)p_this;
+ int i_ret = VLC_SUCCESS;
- if( i_status == VLC_THREADS_READY )
+ /* If we have lazy mutex initialization, use it. Otherwise, we just
+ * hope nothing wrong happens. */
+#if defined( PTH_INIT_IN_PTH_H )
+#elif defined( ST_INIT_IN_ST_H )
+#elif defined( UNDER_CE )
+#elif defined( WIN32 )
+ if( IsDebuggerPresent() )
{
- return 0;
+ /* SignalObjectAndWait() is problematic under a debugger */
+ b_fast_mutex = VLC_TRUE;
+ i_win9x_cv = 1;
}
+#elif defined( HAVE_KERNEL_SCHEDULER_H )
+#elif defined( PTHREAD_COND_T_IN_PTHREAD_H )
+ pthread_mutex_lock( &once_mutex );
+#elif defined( HAVE_CTHREADS_H )
+#endif
if( i_status == VLC_THREADS_UNINITIALIZED )
{
i_status = VLC_THREADS_PENDING;
+ /* We should be safe now. Do all the initialization stuff we want. */
+ p_libvlc_global->b_ready = VLC_FALSE;
+
#if defined( PTH_INIT_IN_PTH_H )
- i_ret = pth_init();
+ i_ret = ( pth_init() == FALSE );
#elif defined( ST_INIT_IN_ST_H )
i_ret = st_init();
+#elif defined( UNDER_CE )
+ /* Nothing to initialize */
+
#elif defined( WIN32 )
- i_ret = 0;
+ /* Dynamically get the address of SignalObjectAndWait */
+ if( GetVersion() < 0x80000000 )
+ {
+ HINSTANCE hInstLib;
+
+ /* We are running on NT/2K/XP, we can use SignalObjectAndWait */
+ hInstLib = LoadLibrary( "kernel32" );
+ if( hInstLib )
+ {
+ pf_SignalObjectAndWait =
+ (SIGNALOBJECTANDWAIT)GetProcAddress( hInstLib,
+ "SignalObjectAndWait" );
+ }
+ }
+#elif defined( HAVE_KERNEL_SCHEDULER_H )
#elif defined( PTHREAD_COND_T_IN_PTHREAD_H )
- i_ret = 0;
-
#elif defined( HAVE_CTHREADS_H )
- i_ret = 0;
+#endif
-#elif defined( HAVE_KERNEL_SCHEDULER_H )
- i_ret = 0;
+ p_root = vlc_object_create( p_libvlc_global, VLC_OBJECT_GLOBAL );
+ if( p_root == NULL )
+ i_ret = VLC_ENOMEM;
-#endif
if( i_ret )
{
i_status = VLC_THREADS_ERROR;
- return i_ret;
+ }
+ else
+ {
+ i_initializations++;
+ i_status = VLC_THREADS_READY;
}
- vlc_mutex_init( p_this, p_this->p_vlc->p_global_lock );
-
- i_status = VLC_THREADS_READY;
-
- return i_ret;
+ vlc_threadvar_create( p_root, &msg_context_global_key );
+ }
+ else
+ {
+ /* Just increment the initialization count */
+ i_initializations++;
}
- /* Wait until the other thread has initialized the thread library */
- while( i_status == VLC_THREADS_PENDING )
+ /* If we have lazy mutex initialization support, unlock the mutex;
+ * otherwize, do a naive wait loop. */
+#if defined( PTH_INIT_IN_PTH_H )
+ while( i_status == VLC_THREADS_PENDING ) msleep( THREAD_SLEEP );
+#elif defined( ST_INIT_IN_ST_H )
+ while( i_status == VLC_THREADS_PENDING ) msleep( THREAD_SLEEP );
+#elif defined( UNDER_CE )
+ while( i_status == VLC_THREADS_PENDING ) msleep( THREAD_SLEEP );
+#elif defined( WIN32 )
+ while( i_status == VLC_THREADS_PENDING ) msleep( THREAD_SLEEP );
+#elif defined( HAVE_KERNEL_SCHEDULER_H )
+ while( i_status == VLC_THREADS_PENDING ) msleep( THREAD_SLEEP );
+#elif defined( PTHREAD_COND_T_IN_PTHREAD_H )
+ pthread_mutex_unlock( &once_mutex );
+#elif defined( HAVE_CTHREADS_H )
+ while( i_status == VLC_THREADS_PENDING ) msleep( THREAD_SLEEP );
+#endif
+
+ if( i_status != VLC_THREADS_READY )
{
- msleep( THREAD_SLEEP );
+ return VLC_ETHREAD;
}
- return( i_status == VLC_THREADS_READY );
+ return i_ret;
}
/*****************************************************************************
* vlc_threads_end: stop threads system
+ *****************************************************************************
+ * FIXME: This function is far from being threadsafe.
*****************************************************************************/
-int vlc_threads_end( void )
+int __vlc_threads_end( vlc_object_t *p_this )
{
+ (void)p_this;
#if defined( PTH_INIT_IN_PTH_H )
- return pth_kill();
-
#elif defined( ST_INIT_IN_ST_H )
- return 0;
-
+#elif defined( UNDER_CE )
#elif defined( WIN32 )
- return 0;
-
+#elif defined( HAVE_KERNEL_SCHEDULER_H )
#elif defined( PTHREAD_COND_T_IN_PTHREAD_H )
- return 0;
-
+ pthread_mutex_lock( &once_mutex );
#elif defined( HAVE_CTHREADS_H )
- return 0;
+#endif
-#elif defined( HAVE_KERNEL_SCHEDULER_H )
- return 0;
+ if( i_initializations == 0 )
+ return VLC_EGENERIC;
+
+ i_initializations--;
+ if( i_initializations == 0 )
+ {
+ i_status = VLC_THREADS_UNINITIALIZED;
+ vlc_object_destroy( p_root );
+ }
+
+#if defined( PTH_INIT_IN_PTH_H )
+ if( i_initializations == 0 )
+ {
+ return ( pth_kill() == FALSE );
+ }
+#elif defined( ST_INIT_IN_ST_H )
+#elif defined( UNDER_CE )
+#elif defined( WIN32 )
+#elif defined( HAVE_KERNEL_SCHEDULER_H )
+#elif defined( PTHREAD_COND_T_IN_PTHREAD_H )
+ pthread_mutex_unlock( &once_mutex );
+#elif defined( HAVE_CTHREADS_H )
#endif
+ return VLC_SUCCESS;
}
/*****************************************************************************
*****************************************************************************/
int __vlc_mutex_init( vlc_object_t *p_this, vlc_mutex_t *p_mutex )
{
+ p_mutex->p_this = p_this;
+
#if defined( PTH_INIT_IN_PTH_H )
- return pth_mutex_init( p_mutex );
+ return ( pth_mutex_init( &p_mutex->mutex ) == FALSE );
#elif defined( ST_INIT_IN_ST_H )
- *p_mutex = st_mutex_new();
- return ( *p_mutex == NULL ) ? errno : 0;
+ p_mutex->mutex = st_mutex_new();
+ return ( p_mutex->mutex == NULL ) ? errno : 0;
+
+#elif defined( UNDER_CE )
+ InitializeCriticalSection( &p_mutex->csection );
+ return 0;
#elif defined( WIN32 )
/* We use mutexes on WinNT/2K/XP because we can use the SignalObjectAndWait
* function and have a 100% correct vlc_cond_wait() implementation.
* As this function is not available on Win9x, we can use the faster
* CriticalSections */
- if( (GetVersion() < 0x80000000) && !p_this->p_vlc->b_fast_pthread )
+ if( pf_SignalObjectAndWait && !b_fast_mutex )
{
/* We are running on NT/2K/XP, we can use SignalObjectAndWait */
p_mutex->mutex = CreateMutex( 0, FALSE, 0 );
- return ( p_mutex->mutex ? 0 : 1 );
+ return ( p_mutex->mutex != NULL ? 0 : 1 );
}
else
{
return 0;
}
-#elif defined( PTHREAD_COND_T_IN_PTHREAD_H )
-# if defined(DEBUG) && defined(SYS_LINUX)
- /* Create error-checking mutex to detect threads problems more easily. */
- pthread_mutexattr_t attr;
- int i_result;
-
- pthread_mutexattr_init( &attr );
- pthread_mutexattr_setkind_np( &attr, PTHREAD_MUTEX_ERRORCHECK_NP );
- i_result = pthread_mutex_init( p_mutex, &attr );
- pthread_mutexattr_destroy( &attr );
- return( i_result );
-# endif
- 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 )
{
p_mutex->init = 9999;
return B_OK;
+#elif defined( PTHREAD_COND_T_IN_PTHREAD_H )
+# if defined(DEBUG) && defined(SYS_LINUX)
+ {
+ /* Create error-checking mutex to detect problems more easily. */
+ pthread_mutexattr_t attr;
+ int i_result;
+
+ pthread_mutexattr_init( &attr );
+ pthread_mutexattr_setkind_np( &attr, PTHREAD_MUTEX_ERRORCHECK_NP );
+ i_result = pthread_mutex_init( &p_mutex->mutex, &attr );
+ pthread_mutexattr_destroy( &attr );
+ return( i_result );
+ }
+# endif
+ return pthread_mutex_init( &p_mutex->mutex, NULL );
+
+#elif defined( HAVE_CTHREADS_H )
+ mutex_init( p_mutex );
+ return 0;
+
#endif
}
/*****************************************************************************
* vlc_mutex_destroy: destroy a mutex, inner version
*****************************************************************************/
-int __vlc_mutex_destroy( char * psz_file, int i_line, vlc_mutex_t *p_mutex )
+int __vlc_mutex_destroy( const char * psz_file, int i_line, vlc_mutex_t *p_mutex )
{
+ int i_result;
+ /* In case of error : */
+ int i_thread = -1;
+ const char * psz_error = "";
+
#if defined( PTH_INIT_IN_PTH_H )
return 0;
#elif defined( ST_INIT_IN_ST_H )
- return st_mutex_destroy( *p_mutex );
+ i_result = st_mutex_destroy( p_mutex->mutex );
+
+#elif defined( UNDER_CE )
+ DeleteCriticalSection( &p_mutex->csection );
+ return 0;
#elif defined( WIN32 )
if( p_mutex->mutex )
}
return 0;
-#elif defined( PTHREAD_COND_T_IN_PTHREAD_H )
- int i_return = pthread_mutex_destroy( p_mutex );
- if( i_return )
- {
-//X intf_ErrMsg( "thread %d error: mutex_destroy failed at %s:%d (%s)",
-//X pthread_self(), psz_file, i_line, strerror(i_return) );
- }
- return i_return;
-
-#elif defined( HAVE_CTHREADS_H )
- return 0;
-
#elif defined( HAVE_KERNEL_SCHEDULER_H )
if( p_mutex->init == 9999 )
{
p_mutex->init = 0;
return B_OK;
-#endif
+#elif defined( PTHREAD_COND_T_IN_PTHREAD_H )
+ i_result = pthread_mutex_destroy( &p_mutex->mutex );
+ if( i_result )
+ {
+ i_thread = CAST_PTHREAD_TO_INT(pthread_self());
+ psz_error = strerror(i_result);
+ }
+
+#elif defined( HAVE_CTHREADS_H )
+ return 0;
+
+#endif
+
+ if( i_result )
+ {
+ msg_Err( p_mutex->p_this,
+ "thread %d: mutex_destroy failed at %s:%d (%d:%s)",
+ i_thread, psz_file, i_line, i_result, psz_error );
+ }
+ return i_result;
}
/*****************************************************************************
*****************************************************************************/
int __vlc_cond_init( vlc_object_t *p_this, vlc_cond_t *p_condvar )
{
+ p_condvar->p_this = p_this;
+
#if defined( PTH_INIT_IN_PTH_H )
- return pth_cond_init( p_condvar );
+ return ( pth_cond_init( &p_condvar->cond ) == FALSE );
#elif defined( ST_INIT_IN_ST_H )
- *p_condvar = st_cond_new();
- return ( *p_condvar == NULL ) ? errno : 0;
+ p_condvar->cond = st_cond_new();
+ return ( p_condvar->cond == NULL ) ? errno : 0;
-#elif defined( WIN32 )
+#elif defined( UNDER_CE )
/* Initialize counter */
p_condvar->i_waiting_threads = 0;
- if( (GetVersion() < 0x80000000) && !p_this->p_vlc->b_fast_pthread )
- {
- /* Create an auto-reset event and a semaphore. */
- p_condvar->signal = CreateEvent( NULL, FALSE, FALSE, NULL );
- p_condvar->semaphore = CreateSemaphore( NULL, 0, 0x7fffffff, NULL );
+ /* Create an auto-reset event. */
+ p_condvar->event = CreateEvent( NULL, /* no security */
+ FALSE, /* auto-reset event */
+ FALSE, /* start non-signaled */
+ NULL ); /* unnamed */
+ return !p_condvar->event;
- p_condvar->b_broadcast = 0;
+#elif defined( WIN32 )
+ /* Initialize counter */
+ p_condvar->i_waiting_threads = 0;
- /* We are running on NT/2K/XP, we can use SignalObjectAndWait */
- p_condvar->SignalObjectAndWait = p_this->p_vlc->SignalObjectAndWait;
+ /* Misc init */
+ p_condvar->i_win9x_cv = i_win9x_cv;
+ p_condvar->SignalObjectAndWait = pf_SignalObjectAndWait;
- return !p_condvar->signal || !p_condvar->semaphore;
+ if( (p_condvar->SignalObjectAndWait && !b_fast_mutex)
+ || p_condvar->i_win9x_cv == 0 )
+ {
+ /* Create an auto-reset event. */
+ p_condvar->event = CreateEvent( NULL, /* no security */
+ FALSE, /* auto-reset event */
+ FALSE, /* start non-signaled */
+ NULL ); /* unnamed */
+
+ p_condvar->semaphore = NULL;
+ return !p_condvar->event;
}
else
{
- p_condvar->signal = NULL;
-
- /* Create an auto-reset event and a manual-reset event. */
- p_condvar->p_events[0] = CreateEvent( NULL, FALSE, FALSE, NULL );
- p_condvar->p_events[1] = CreateEvent( NULL, TRUE, FALSE, NULL );
+ p_condvar->semaphore = CreateSemaphore( NULL, /* no security */
+ 0, /* initial count */
+ 0x7fffffff, /* max count */
+ NULL ); /* unnamed */
- return !p_condvar->p_events[0] || !p_condvar->p_events[1];
- }
+ if( p_condvar->i_win9x_cv == 1 )
+ /* Create a manual-reset event initially signaled. */
+ p_condvar->event = CreateEvent( NULL, TRUE, TRUE, NULL );
+ else
+ /* Create a auto-reset event. */
+ p_condvar->event = CreateEvent( NULL, FALSE, FALSE, NULL );
-#elif defined( PTHREAD_COND_T_IN_PTHREAD_H )
- return pthread_cond_init( p_condvar, NULL );
+ InitializeCriticalSection( &p_condvar->csection );
-#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;
+ return !p_condvar->semaphore || !p_condvar->event;
+ }
#elif defined( HAVE_KERNEL_SCHEDULER_H )
if( !p_condvar )
p_condvar->init = 9999;
return 0;
+#elif defined( PTHREAD_COND_T_IN_PTHREAD_H )
+ return pthread_cond_init( &p_condvar->cond, 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;
+
#endif
}
/*****************************************************************************
* vlc_cond_destroy: destroy a condition, inner version
*****************************************************************************/
-int __vlc_cond_destroy( char * psz_file, int i_line, vlc_cond_t *p_condvar )
+int __vlc_cond_destroy( const char * psz_file, int i_line, vlc_cond_t *p_condvar )
{
+ int i_result;
+ /* In case of error : */
+ int i_thread = -1;
+ const char * psz_error = "";
+
#if defined( PTH_INIT_IN_PTH_H )
return 0;
#elif defined( ST_INIT_IN_ST_H )
- return st_cond_destroy( *p_condvar );
+ i_result = st_cond_destroy( p_condvar->cond );
+
+#elif defined( UNDER_CE )
+ i_result = !CloseHandle( p_condvar->event );
#elif defined( WIN32 )
- if( p_condvar->signal )
- {
- return !CloseHandle( p_condvar->signal )
- || !CloseHandle( p_condvar->semaphore );
- }
+ if( !p_condvar->semaphore )
+ i_result = !CloseHandle( p_condvar->event );
else
- {
- return !CloseHandle( p_condvar->p_events[0] )
- || !CloseHandle( p_condvar->p_events[1] );
- }
+ i_result = !CloseHandle( p_condvar->event )
+ || !CloseHandle( p_condvar->semaphore );
+
+ if( p_condvar->semaphore != NULL )
+ DeleteCriticalSection( &p_condvar->csection );
+
+#elif defined( HAVE_KERNEL_SCHEDULER_H )
+ p_condvar->init = 0;
+ return 0;
#elif defined( PTHREAD_COND_T_IN_PTHREAD_H )
- int i_result = pthread_cond_destroy( p_condvar );
+ i_result = pthread_cond_destroy( &p_condvar->cond );
if( i_result )
{
-//X intf_ErrMsg( "thread %d error: cond_destroy failed at %s:%d (%s)",
-//X pthread_self(), psz_file, i_line, strerror(i_result) );
+ i_thread = CAST_PTHREAD_TO_INT(pthread_self());
+ psz_error = strerror(i_result);
}
- return i_result;
#elif defined( HAVE_CTHREADS_H )
return 0;
+#endif
+
+ if( i_result )
+ {
+ msg_Err( p_condvar->p_this,
+ "thread %d: cond_destroy failed at %s:%d (%d:%s)",
+ i_thread, psz_file, i_line, i_result, psz_error );
+ }
+ return i_result;
+}
+
+/*****************************************************************************
+ * vlc_tls_create: create a thread-local variable
+ *****************************************************************************/
+int __vlc_threadvar_create( vlc_object_t *p_this, vlc_threadvar_t *p_tls )
+{
+ int i_ret = -1;
+ (void)p_this;
+#if defined( PTH_INIT_IN_PTH_H )
+ i_ret = pth_key_create( &p_tls->handle, NULL );
#elif defined( HAVE_KERNEL_SCHEDULER_H )
- p_condvar->init = 0;
- return 0;
+ msg_Err( p_this, "TLS not implemented" );
+ i_ret VLC_EGENERIC;
+#elif defined( ST_INIT_IN_ST_H )
+ i_ret = st_key_create( &p_tls->handle, NULL );
+#elif defined( UNDER_CE ) || defined( WIN32 )
+#elif defined( WIN32 )
+ p_tls->handle = TlsAlloc();
+ i_ret = !( p_tls->handle == 0xFFFFFFFF );
-#endif
+#elif defined( PTHREAD_COND_T_IN_PTHREAD_H )
+ i_ret = pthread_key_create( &p_tls->handle, NULL );
+#elif defined( HAVE_CTHREADS_H )
+ i_ret = cthread_keycreate( &p_tls-handle );
+#endif
+ return i_ret;
}
/*****************************************************************************
* vlc_thread_create: create a thread, inner version
+ *****************************************************************************
+ * Note that i_priority is only taken into account on platforms supporting
+ * userland real-time priority threads.
*****************************************************************************/
-int __vlc_thread_create( vlc_object_t *p_this, char * psz_file, int i_line,
- char *psz_name, void * ( *func ) ( void * ),
- vlc_bool_t b_wait )
+int __vlc_thread_create( vlc_object_t *p_this, const char * psz_file, int i_line,
+ const char *psz_name, void * ( *func ) ( void * ),
+ int i_priority, vlc_bool_t b_wait )
{
int i_ret;
+ void *p_data = (void *)p_this;
+ vlc_object_internals_t *p_priv = p_this->p_internals;
vlc_mutex_lock( &p_this->object_lock );
-#ifdef GPROF
- wrapper_t wrapper;
-
- /* Initialize the wrapper structure */
- wrapper.func = func;
- wrapper.p_data = (void *)p_this;
- getitimer( ITIMER_PROF, &wrapper.itimer );
- vlc_mutex_init( p_this, &wrapper.lock );
- vlc_cond_init( p_this, &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_this->thread_id = pth_spawn( PTH_ATTR_DEFAULT, func, (void *)p_this );
- i_ret = 0;
+ p_priv->thread_id = pth_spawn( PTH_ATTR_DEFAULT, func, p_data );
+ i_ret = p_priv->thread_id == NULL;
#elif defined( ST_INIT_IN_ST_H )
- p_this->thread_id = st_thread_create( func, (void *)p_this, 1, 0 );
+ p_priv->thread_id = st_thread_create( func, p_data, 1, 0 );
i_ret = 0;
-
-#elif defined( WIN32 )
+
+#elif defined( WIN32 ) || defined( UNDER_CE )
{
- 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_this->thread_id =
- (HANDLE)_beginthreadex( NULL, 0, (PTHREAD_START) func,
- (void *)p_this, 0, &threadID );
+ * memory leaks and the signal functions not working (see Microsoft
+ * Knowledge Base, article 104641) */
+#if defined( UNDER_CE )
+ DWORD threadId;
+ HANDLE hThread = CreateThread( NULL, 0, (LPTHREAD_START_ROUTINE)func,
+ (LPVOID)p_data, CREATE_SUSPENDED,
+ &threadId );
+#else
+ unsigned threadId;
+ uintptr_t hThread = _beginthreadex( NULL, 0,
+ (LPTHREAD_START_ROUTINE)func,
+ (void*)p_data, CREATE_SUSPENDED,
+ &threadId );
+#endif
+ p_priv->thread_id.id = (DWORD)threadId;
+ p_priv->thread_id.hThread = (HANDLE)hThread;
+ ResumeThread((HANDLE)hThread);
}
- i_ret = ( p_this->thread_id ? 0 : 1 );
-
-#elif defined( PTHREAD_COND_T_IN_PTHREAD_H )
- i_ret = pthread_create( &p_this->thread_id, NULL, func, (void *)p_this );
+ i_ret = ( p_priv->thread_id.hThread ? 0 : 1 );
-#elif defined( HAVE_CTHREADS_H )
- p_this->thread_id = cthread_fork( (cthread_fn_t)func, (any_t)p_this );
- i_ret = 0;
+ if( i_ret && i_priority )
+ {
+ if( !SetThreadPriority(p_priv->thread_id.hThread, i_priority) )
+ {
+ msg_Warn( p_this, "couldn't set a faster priority" );
+ i_priority = 0;
+ }
+ }
#elif defined( HAVE_KERNEL_SCHEDULER_H )
- p_this->thread_id = spawn_thread( (thread_func)func, psz_name,
- B_NORMAL_PRIORITY, (void *)p_this );
- i_ret = resume_thread( p_this->thread_id );
+ p_priv->thread_id = spawn_thread( (thread_func)func, psz_name,
+ i_priority, p_data );
+ i_ret = resume_thread( p_priv->thread_id );
+
+#elif defined( PTHREAD_COND_T_IN_PTHREAD_H )
+ i_ret = pthread_create( &p_priv->thread_id, NULL, func, p_data );
+#ifndef __APPLE__
+ if( config_GetInt( p_this, "rt-priority" ) )
#endif
+ {
+ int i_error, i_policy;
+ struct sched_param param;
-#ifdef GPROF
- if( i_ret == 0 )
+ memset( ¶m, 0, sizeof(struct sched_param) );
+ if( config_GetType( p_this, "rt-offset" ) )
+ {
+ i_priority += config_GetInt( p_this, "rt-offset" );
+ }
+ if( i_priority <= 0 )
+ {
+ param.sched_priority = (-1) * i_priority;
+ i_policy = SCHED_OTHER;
+ }
+ else
+ {
+ param.sched_priority = i_priority;
+ i_policy = SCHED_RR;
+ }
+ if( (i_error = pthread_setschedparam( p_priv->thread_id,
+ i_policy, ¶m )) )
+ {
+ msg_Warn( p_this, "couldn't set thread priority (%s:%d): %s",
+ psz_file, i_line, strerror(i_error) );
+ i_priority = 0;
+ }
+ }
+#ifndef __APPLE__
+ else
{
- vlc_cond_wait( &wrapper.wait, &wrapper.lock );
+ i_priority = 0;
}
+#endif
+
+#elif defined( HAVE_CTHREADS_H )
+ p_priv->thread_id = cthread_fork( (cthread_fn_t)func, (any_t)p_data );
+ i_ret = 0;
- vlc_mutex_unlock( &wrapper.lock );
- vlc_mutex_destroy( &wrapper.lock );
- vlc_cond_destroy( &wrapper.wait );
#endif
if( i_ret == 0 )
vlc_cond_wait( &p_this->object_wait, &p_this->object_lock );
}
- p_this->b_thread = 1;
+ p_priv->b_thread = VLC_TRUE;
+
+#if defined( WIN32 ) || defined( UNDER_CE )
+ msg_Dbg( p_this, "thread %u (%s) created at priority %d (%s:%d)",
+ (unsigned int)p_priv->thread_id.id, psz_name,
+ i_priority, psz_file, i_line );
+#else
+ msg_Dbg( p_this, "thread %u (%s) created at priority %d (%s:%d)",
+ (unsigned int)p_priv->thread_id, psz_name, i_priority,
+ psz_file, i_line );
+#endif
- msg_Dbg( p_this, "thread %d (%s) created (%s:%d)",
- p_this->thread_id, psz_name, psz_file, i_line );
vlc_mutex_unlock( &p_this->object_lock );
}
return i_ret;
}
+/*****************************************************************************
+ * vlc_thread_set_priority: set the priority of the current thread when we
+ * couldn't set it in vlc_thread_create (for instance for the main thread)
+ *****************************************************************************/
+int __vlc_thread_set_priority( vlc_object_t *p_this, const char * psz_file,
+ int i_line, int i_priority )
+{
+ vlc_object_internals_t *p_priv = p_this->p_internals;
+#if defined( PTH_INIT_IN_PTH_H ) || defined( ST_INIT_IN_ST_H )
+#elif defined( WIN32 ) || defined( UNDER_CE )
+ if( !p_priv->thread_id.hThread )
+ p_priv->thread_id.hThread = GetCurrentThread();
+ if( !SetThreadPriority(p_priv->thread_id.hThread, i_priority) )
+ {
+ msg_Warn( p_this, "couldn't set a faster priority" );
+ return 1;
+ }
+
+#elif defined( PTHREAD_COND_T_IN_PTHREAD_H )
+# ifndef __APPLE__
+ if( config_GetInt( p_this, "rt-priority" ) > 0 )
+# endif
+ {
+ int i_error, i_policy;
+ struct sched_param param;
+
+ memset( ¶m, 0, sizeof(struct sched_param) );
+ if( config_GetType( p_this, "rt-offset" ) )
+ {
+ i_priority += config_GetInt( p_this, "rt-offset" );
+ }
+ if( i_priority <= 0 )
+ {
+ param.sched_priority = (-1) * i_priority;
+ i_policy = SCHED_OTHER;
+ }
+ else
+ {
+ param.sched_priority = i_priority;
+ i_policy = SCHED_RR;
+ }
+ if( !p_priv->thread_id )
+ p_priv->thread_id = pthread_self();
+ if( (i_error = pthread_setschedparam( p_priv->thread_id,
+ i_policy, ¶m )) )
+ {
+ msg_Warn( p_this, "couldn't set thread priority (%s:%d): %s",
+ psz_file, i_line, strerror(i_error) );
+ i_priority = 0;
+ }
+ }
+#endif
+
+ return 0;
+}
+
/*****************************************************************************
* vlc_thread_ready: tell the parent thread we were successfully spawned
*****************************************************************************/
/*****************************************************************************
* vlc_thread_join: wait until a thread exits, inner version
*****************************************************************************/
-void __vlc_thread_join( vlc_object_t *p_this, char * psz_file, int i_line )
+void __vlc_thread_join( vlc_object_t *p_this, const char * psz_file, int i_line )
{
+ vlc_object_internals_t *p_priv = p_this->p_internals;
+
+#if defined( UNDER_CE ) || defined( WIN32 )
+ HMODULE hmodule;
+ BOOL (WINAPI *OurGetThreadTimes)( HANDLE, FILETIME*, FILETIME*,
+ FILETIME*, FILETIME* );
+ FILETIME create_ft, exit_ft, kernel_ft, user_ft;
+ int64_t real_time, kernel_time, user_time;
+ HANDLE hThread;
+
+ /*
+ ** object will close its thread handle when destroyed, duplicate it here
+ ** to be on the safe side
+ */
+ if( ! DuplicateHandle(GetCurrentProcess(),
+ p_priv->thread_id.hThread,
+ GetCurrentProcess(),
+ &hThread,
+ 0,
+ FALSE,
+ DUPLICATE_SAME_ACCESS) )
+ {
+ msg_Err( p_this, "thread_join(%u) failed at %s:%d (%s)",
+ (unsigned int)p_priv->thread_id.id,
+ psz_file, i_line, GetLastError() );
+ p_priv->b_thread = VLC_FALSE;
+ return;
+ }
+
+ WaitForSingleObject( hThread, INFINITE );
+
+ msg_Dbg( p_this, "thread %u joined (%s:%d)",
+ (unsigned int)p_priv->thread_id.id,
+ psz_file, i_line );
+#if defined( UNDER_CE )
+ hmodule = GetModuleHandle( _T("COREDLL") );
+#else
+ hmodule = GetModuleHandle( _T("KERNEL32") );
+#endif
+ OurGetThreadTimes = (BOOL (WINAPI*)( HANDLE, FILETIME*, FILETIME*,
+ FILETIME*, FILETIME* ))
+ GetProcAddress( hmodule, _T("GetThreadTimes") );
+
+ if( OurGetThreadTimes &&
+ OurGetThreadTimes( hThread,
+ &create_ft, &exit_ft, &kernel_ft, &user_ft ) )
+ {
+ real_time =
+ ((((int64_t)exit_ft.dwHighDateTime)<<32)| exit_ft.dwLowDateTime) -
+ ((((int64_t)create_ft.dwHighDateTime)<<32)| create_ft.dwLowDateTime);
+ real_time /= 10;
+
+ kernel_time =
+ ((((int64_t)kernel_ft.dwHighDateTime)<<32)|
+ kernel_ft.dwLowDateTime) / 10;
+
+ user_time =
+ ((((int64_t)user_ft.dwHighDateTime)<<32)|
+ user_ft.dwLowDateTime) / 10;
+
+ msg_Dbg( p_this, "thread times: "
+ "real "I64Fd"m%fs, kernel "I64Fd"m%fs, user "I64Fd"m%fs",
+ real_time/60/1000000,
+ (double)((real_time%(60*1000000))/1000000.0),
+ kernel_time/60/1000000,
+ (double)((kernel_time%(60*1000000))/1000000.0),
+ user_time/60/1000000,
+ (double)((user_time%(60*1000000))/1000000.0) );
+ }
+ CloseHandle( hThread );
+
+#else /* !defined(WIN32) */
+
int i_ret = 0;
#if defined( PTH_INIT_IN_PTH_H )
- i_ret = pth_join( p_this->thread_id, NULL );
+ i_ret = ( pth_join( p_priv->thread_id, NULL ) == FALSE );
#elif defined( ST_INIT_IN_ST_H )
- i_ret = st_thread_join( p_this->thread_id, NULL );
-
-#elif defined( WIN32 )
- WaitForSingleObject( p_this->thread_id, INFINITE );
+ i_ret = st_thread_join( p_priv->thread_id, NULL );
+
+#elif defined( HAVE_KERNEL_SCHEDULER_H )
+ int32_t exit_value;
+ i_ret = (B_OK == wait_for_thread( p_priv->thread_id, &exit_value ));
#elif defined( PTHREAD_COND_T_IN_PTHREAD_H )
- i_ret = pthread_join( p_this->thread_id, NULL );
+ i_ret = pthread_join( p_priv->thread_id, NULL );
#elif defined( HAVE_CTHREADS_H )
- cthread_join( p_this->thread_id );
+ cthread_join( p_priv->thread_id );
i_ret = 1;
-#elif defined( HAVE_KERNEL_SCHEDULER_H )
- int32 exit_value;
- wait_for_thread( p_this->thread_id, &exit_value );
-
#endif
if( i_ret )
{
- msg_Err( p_this, "thread_join(%d) failed at %s:%d (%s)",
- p_this->thread_id, psz_file, i_line, strerror(i_ret) );
+ msg_Err( p_this, "thread_join(%u) failed at %s:%d (%s)",
+ (unsigned int)p_priv->thread_id, psz_file, i_line,
+ strerror(i_ret) );
}
else
{
- msg_Dbg( p_this, "thread %d joined (%s:%d)",
- p_this->thread_id, psz_file, i_line );
+ msg_Dbg( p_this, "thread %u joined (%s:%d)",
+ (unsigned int)p_priv->thread_id, psz_file, i_line );
}
- p_this->b_thread = 0;
-}
-
-/*****************************************************************************
- * vlc_thread_wrapper: wrapper around thread functions used when profiling.
- *****************************************************************************/
-#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 );
+#endif
- /* Call the real function */
- return func( p_data );
+ p_priv->b_thread = VLC_FALSE;
}
-#endif
+
projects / vlc / blobdiff