/*****************************************************************************
* objects.c: vlc_object_t handling
*****************************************************************************
- * Copyright (C) 2002 VideoLAN
- * $Id: objects.c,v 1.17 2002/08/14 08:17:24 sam Exp $
+ * Copyright (C) 2004 the VideoLAN team
+ * $Id$
*
* Authors: Samuel Hocevar <sam@zoy.org>
*
* 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.
*****************************************************************************/
+/**
+ * \file
+ * This file contains the functions to handle the vlc_object_t type
+ */
+
+
/*****************************************************************************
* Preamble
*****************************************************************************/
#include <vlc/vlc.h>
+#include <vlc/input.h>
#ifdef HAVE_STDLIB_H
# include <stdlib.h> /* realloc() */
#endif
-#include "stream_control.h"
-#include "input_ext-intf.h"
-#include "input_ext-dec.h"
-
-#include "video.h"
+#include "vlc_video.h"
#include "video_output.h"
+#include "vlc_spu.h"
#include "audio_output.h"
#include "aout_internal.h"
+#include "stream_output.h"
#include "vlc_playlist.h"
-#include "interface.h"
+#include "vlc_interface.h"
+#include "vlc_codec.h"
+#include "vlc_filter.h"
+
+#include "vlc_httpd.h"
+#include "vlc_vlm.h"
+#include "vlc_vod.h"
+#include "vlc_tls.h"
+#include "vlc_xml.h"
+#include "vlc_osd.h"
/*****************************************************************************
* Local prototypes
*****************************************************************************/
-static vlc_object_t * vlc_object_find_inner( vlc_object_t *, int, int );
-static void vlc_object_detach_inner( vlc_object_t * );
-static void vlc_dumpstructure_inner( vlc_object_t *, int, char * );
-static int find_index_inner( vlc_object_t *, vlc_object_t **, int );
-static void set_attachment_flag( vlc_object_t *, vlc_bool_t );
+static int DumpCommand( vlc_object_t *, char const *,
+ vlc_value_t, vlc_value_t, void * );
+
+static vlc_object_t * FindObject ( vlc_object_t *, int, int );
+static void DetachObject ( vlc_object_t * );
+static void PrintObject ( vlc_object_t *, const char * );
+static void DumpStructure ( vlc_object_t *, int, char * );
+static int FindIndex ( vlc_object_t *, vlc_object_t **, int );
+static void SetAttachment ( vlc_object_t *, vlc_bool_t );
+
+static vlc_list_t * NewList ( int );
+static void ListReplace ( vlc_list_t *, vlc_object_t *, int );
+/*static void ListAppend ( vlc_list_t *, vlc_object_t * );*/
+static int CountChildren ( vlc_object_t *, int );
+static void ListChildren ( vlc_list_t *, vlc_object_t *, int );
+
+/*****************************************************************************
+ * Local structure lock
+ *****************************************************************************/
+static vlc_mutex_t structure_lock;
/*****************************************************************************
* vlc_object_create: initialize a vlc object
* i_type is not a known value such as VLC_OBJECT_ROOT, VLC_OBJECT_VOUT and
* so on, vlc_object_create will use its value for the object size.
*****************************************************************************/
+
+/**
+ * Initialize a vlc object
+ *
+ * This function allocates memory for a vlc object and initializes it. If
+ * i_type is not a known value such as VLC_OBJECT_ROOT, VLC_OBJECT_VOUT and
+ * so on, vlc_object_create will use its value for the object size.
+ */
void * __vlc_object_create( vlc_object_t *p_this, int i_type )
{
vlc_object_t * p_new;
- char * psz_type;
+ const char * psz_type;
size_t i_size;
switch( i_type )
{
case VLC_OBJECT_ROOT:
- i_size = sizeof(vlc_t);
+ i_size = sizeof(libvlc_global_data_t);
psz_type = "root";
break;
+ case VLC_OBJECT_LIBVLC:
+ i_size = sizeof(libvlc_int_t);
+ psz_type = "libvlc";
+ break;
case VLC_OBJECT_MODULE:
i_size = sizeof(module_t);
psz_type = "module";
i_size = sizeof(intf_thread_t);
psz_type = "interface";
break;
+ case VLC_OBJECT_DIALOGS:
+ i_size = sizeof(intf_thread_t);
+ psz_type = "dialogs";
+ break;
case VLC_OBJECT_PLAYLIST:
i_size = sizeof(playlist_t);
psz_type = "playlist";
break;
+ case VLC_OBJECT_SD:
+ i_size = sizeof(services_discovery_t);
+ psz_type = "services discovery";
+ break;
case VLC_OBJECT_INPUT:
i_size = sizeof(input_thread_t);
psz_type = "input";
break;
+ case VLC_OBJECT_DEMUX:
+ i_size = sizeof(demux_t);
+ psz_type = "demux";
+ break;
+ case VLC_OBJECT_STREAM:
+ i_size = sizeof(stream_t);
+ psz_type = "stream";
+ break;
+ case VLC_OBJECT_ACCESS:
+ i_size = sizeof(access_t);
+ psz_type = "access";
+ break;
case VLC_OBJECT_DECODER:
- i_size = sizeof(decoder_fifo_t);
+ i_size = sizeof(decoder_t);
psz_type = "decoder";
break;
+ case VLC_OBJECT_PACKETIZER:
+ i_size = sizeof(decoder_t);
+ psz_type = "packetizer";
+ break;
+ case VLC_OBJECT_ENCODER:
+ i_size = sizeof(encoder_t);
+ psz_type = "encoder";
+ break;
+ case VLC_OBJECT_FILTER:
+ i_size = sizeof(filter_t);
+ psz_type = "filter";
+ break;
case VLC_OBJECT_VOUT:
i_size = sizeof(vout_thread_t);
psz_type = "video output";
break;
+ case VLC_OBJECT_SPU:
+ i_size = sizeof(spu_t);
+ psz_type = "subpicture";
+ break;
case VLC_OBJECT_AOUT:
i_size = sizeof(aout_instance_t);
psz_type = "audio output";
break;
+ case VLC_OBJECT_SOUT:
+ i_size = sizeof(sout_instance_t);
+ psz_type = "stream output";
+ break;
+ case VLC_OBJECT_HTTPD:
+ i_size = sizeof( httpd_t );
+ psz_type = "http server";
+ break;
+ case VLC_OBJECT_HTTPD_HOST:
+ i_size = sizeof( httpd_host_t );
+ psz_type = "http server";
+ break;
+ case VLC_OBJECT_VLM:
+ i_size = sizeof( vlm_t );
+ psz_type = "vlm dameon";
+ break;
+ case VLC_OBJECT_VOD:
+ i_size = sizeof( vod_t );
+ psz_type = "vod server";
+ break;
+ case VLC_OBJECT_TLS:
+ i_size = sizeof( tls_t );
+ psz_type = "tls";
+ break;
+ case VLC_OBJECT_XML:
+ i_size = sizeof( xml_t );
+ psz_type = "xml";
+ break;
+ case VLC_OBJECT_OPENGL:
+ i_size = sizeof( vout_thread_t );
+ psz_type = "opengl";
+ break;
+ case VLC_OBJECT_ANNOUNCE:
+ i_size = sizeof( announce_handler_t );
+ psz_type = "announce";
+ break;
+ case VLC_OBJECT_OSDMENU:
+ i_size = sizeof( osd_menu_t );
+ psz_type = "osd menu";
+ break;
default:
- i_size = i_type > sizeof(vlc_object_t)
- ? i_type : sizeof(vlc_object_t);
+ i_size = i_type > (int)sizeof(vlc_object_t)
+ ? i_type : (int)sizeof(vlc_object_t);
i_type = VLC_OBJECT_GENERIC;
psz_type = "generic";
break;
}
- p_new = malloc( i_size );
-
- if( !p_new )
+ if( i_type == VLC_OBJECT_ROOT )
{
- return NULL;
+ p_new = p_this;
+ }
+ else
+ {
+ p_new = malloc( i_size );
+ if( !p_new ) return NULL;
+ memset( p_new, 0, i_size );
}
-
- memset( p_new, 0, i_size );
p_new->i_object_type = i_type;
p_new->psz_object_type = psz_type;
p_new->psz_object_name = NULL;
- p_new->i_refcount = 0;
p_new->b_die = VLC_FALSE;
p_new->b_error = VLC_FALSE;
p_new->b_dead = VLC_FALSE;
p_new->b_attached = VLC_FALSE;
+ p_new->b_force = VLC_FALSE;
+
+ p_new->psz_header = NULL;
+
+ p_new->i_flags = 0;
+ if( p_this->i_flags & OBJECT_FLAGS_NODBG )
+ p_new->i_flags |= OBJECT_FLAGS_NODBG;
+ if( p_this->i_flags & OBJECT_FLAGS_QUIET )
+ p_new->i_flags |= OBJECT_FLAGS_QUIET;
+ if( p_this->i_flags & OBJECT_FLAGS_NOINTERACT )
+ p_new->i_flags |= OBJECT_FLAGS_NOINTERACT;
+
+ p_new->i_vars = 0;
+ p_new->p_vars = (variable_t *)malloc( 16 * sizeof( variable_t ) );
+
+ if( !p_new->p_vars )
+ {
+ if( i_type != VLC_OBJECT_ROOT )
+ free( p_new );
+ return NULL;
+ }
- /* If i_type is root, then p_new is our own p_vlc */
if( i_type == VLC_OBJECT_ROOT )
{
- /* We are the first object ... no need to lock. */
- p_new->p_vlc = (vlc_t*)p_new;
+ /* If i_type is root, then p_new is actually p_libvlc_global */
+ p_new->p_libvlc_global = (libvlc_global_data_t*)p_new;
+ p_new->p_libvlc = NULL;
- p_new->p_vlc->i_counter = 0;
+ p_new->p_libvlc_global->i_counter = 0;
p_new->i_object_id = 0;
- p_new->p_vlc->i_objects = 1;
- p_new->p_vlc->pp_objects = malloc( sizeof(vlc_object_t *) );
- p_new->p_vlc->pp_objects[0] = p_new;
+ p_new->p_libvlc_global->i_objects = 1;
+ p_new->p_libvlc_global->pp_objects = malloc( sizeof(vlc_object_t *) );
+ p_new->p_libvlc_global->pp_objects[0] = p_new;
p_new->b_attached = VLC_TRUE;
}
else
{
- p_new->p_vlc = p_this->p_vlc;
+ p_new->p_libvlc_global = p_this->p_libvlc_global;
+ p_new->p_libvlc = ( i_type == VLC_OBJECT_LIBVLC ) ? (libvlc_int_t*)p_new
+ : p_this->p_libvlc;
- vlc_mutex_lock( &p_this->p_vlc->structure_lock );
+ vlc_mutex_lock( &structure_lock );
- p_new->p_vlc->i_counter++;
- p_new->i_object_id = p_new->p_vlc->i_counter;
+ p_new->p_libvlc_global->i_counter++;
+ p_new->i_object_id = p_new->p_libvlc_global->i_counter;
/* Wooohaa! If *this* fails, we're in serious trouble! Anyway it's
* useless to try and recover anything if pp_objects gets smashed. */
- p_new->p_vlc->i_objects++;
- p_new->p_vlc->pp_objects =
- realloc( p_new->p_vlc->pp_objects,
- p_new->p_vlc->i_objects * sizeof(vlc_object_t *) );
- p_new->p_vlc->pp_objects[ p_new->p_vlc->i_objects - 1 ] = p_new;
+ TAB_APPEND( p_new->p_libvlc_global->i_objects,
+ p_new->p_libvlc_global->pp_objects,
+ p_new );
- vlc_mutex_unlock( &p_this->p_vlc->structure_lock );
+ vlc_mutex_unlock( &structure_lock );
}
+ p_new->i_refcount = 0;
p_new->p_parent = NULL;
p_new->pp_children = NULL;
p_new->i_children = 0;
p_new->p_private = NULL;
+ /* Initialize mutexes and condvars */
vlc_mutex_init( p_new, &p_new->object_lock );
vlc_cond_init( p_new, &p_new->object_wait );
+ vlc_mutex_init( p_new, &p_new->var_lock );
+
+ if( i_type == VLC_OBJECT_ROOT )
+ {
+ vlc_mutex_init( p_new, &structure_lock );
+
+ var_Create( p_new, "list", VLC_VAR_STRING | VLC_VAR_ISCOMMAND );
+ var_AddCallback( p_new, "list", DumpCommand, NULL );
+ var_Create( p_new, "tree", VLC_VAR_STRING | VLC_VAR_ISCOMMAND );
+ var_AddCallback( p_new, "tree", DumpCommand, NULL );
+ }
return p_new;
}
-/*****************************************************************************
- * vlc_object_destroy: destroy a vlc object
- *****************************************************************************
+/**
+ ****************************************************************************
+ * Destroy a vlc object
+ *
* This function destroys an object that has been previously allocated with
* vlc_object_create. The object's refcount must be zero and it must not be
* attached to other objects in any way.
if( p_this->i_children )
{
- msg_Err( p_this, "cannot delete object with children" );
- vlc_dumpstructure( p_this );
+ msg_Err( p_this, "cannot delete object (%i, %s) with children" ,
+ p_this->i_object_id, p_this->psz_object_name );
return;
}
if( p_this->p_parent )
{
- msg_Err( p_this, "cannot delete object with a parent" );
- vlc_dumpstructure( p_this );
+ msg_Err( p_this, "cannot delete object (%i, %s) with a parent",
+ p_this->i_object_id, p_this->psz_object_name );
return;
}
/* Don't warn immediately ... 100ms seems OK */
if( i_delay == 2 )
{
- msg_Warn( p_this, "refcount is %i, delaying before deletion",
- p_this->i_refcount );
+ msg_Warn( p_this,
+ "refcount is %i, delaying before deletion (id=%d,type=%d)",
+ p_this->i_refcount, p_this->i_object_id,
+ p_this->i_object_type );
}
- else if( i_delay == 12 )
+ else if( i_delay == 10 )
{
- msg_Err( p_this, "refcount is %i, I have a bad feeling about this",
- p_this->i_refcount );
+ msg_Err( p_this,
+ "refcount is %i, delaying again (id=%d,type=%d)",
+ p_this->i_refcount, p_this->i_object_id,
+ p_this->i_object_type );
}
- else if( i_delay == 42 )
+ else if( i_delay == 20 )
{
- msg_Err( p_this, "we waited too long, cancelling destruction" );
+ msg_Err( p_this,
+ "waited too long, cancelling destruction (id=%d,type=%d)",
+ p_this->i_object_id, p_this->i_object_type );
return;
}
msleep( 100000 );
}
- vlc_mutex_lock( &p_this->p_vlc->structure_lock );
+ /* Destroy the associated variables, starting from the end so that
+ * no memmove calls have to be done. */
+ while( p_this->i_vars )
+ {
+ var_Destroy( p_this, p_this->p_vars[p_this->i_vars - 1].psz_name );
+ }
+
+ free( p_this->p_vars );
+ vlc_mutex_destroy( &p_this->var_lock );
+
+ if( p_this->psz_header ) free( p_this->psz_header );
- /* Wooohaa! If *this* fails, we're in serious trouble! Anyway it's
- * useless to try and recover anything if pp_objects gets smashed. */
- if( p_this->p_vlc->i_objects > 1 )
+ if( p_this->i_object_type == VLC_OBJECT_ROOT )
{
- int i_index = find_index_inner( p_this, p_this->p_vlc->pp_objects,
- p_this->p_vlc->i_objects );
- memmove( p_this->p_vlc->pp_objects + i_index,
- p_this->p_vlc->pp_objects + i_index + 1,
- p_this->p_vlc->i_objects - i_index - 1 );
+ /* We are the root object ... no need to lock. */
+ free( p_this->p_libvlc_global->pp_objects );
+ p_this->p_libvlc_global->pp_objects = NULL;
+ p_this->p_libvlc_global->i_objects--;
- p_this->p_vlc->pp_objects =
- realloc( p_this->p_vlc->pp_objects,
- (p_this->p_vlc->i_objects - 1) * sizeof(vlc_object_t *) );
+ vlc_mutex_destroy( &structure_lock );
}
else
{
- free( p_this->p_vlc->pp_objects );
- p_this->p_vlc->pp_objects = NULL;
- }
+ int i_index;
- p_this->p_vlc->i_objects--;
+ vlc_mutex_lock( &structure_lock );
- vlc_mutex_unlock( &p_this->p_vlc->structure_lock );
+ /* Wooohaa! If *this* fails, we're in serious trouble! Anyway it's
+ * useless to try and recover anything if pp_objects gets smashed. */
+ i_index = FindIndex( p_this, p_this->p_libvlc_global->pp_objects,
+ p_this->p_libvlc_global->i_objects );
+ REMOVE_ELEM( p_this->p_libvlc_global->pp_objects,
+ p_this->p_libvlc_global->i_objects, i_index );
+
+ vlc_mutex_unlock( &structure_lock );
+ }
vlc_mutex_destroy( &p_this->object_lock );
vlc_cond_destroy( &p_this->object_wait );
- free( p_this );
+ /* root is not dynamically allocated by vlc_object_create */
+ if( p_this->i_object_type != VLC_OBJECT_ROOT )
+ free( p_this );
}
-/*****************************************************************************
- * find_index_inner: find the index of an object in an array of objects
- *****************************************************************************
- * This function assumes that p_this can be found in pp_objects. It will not
- * crash if p_this cannot be found, but will return a random value. It is your
- * duty to check the return value if you are not certain that the object could
- * be found for sure.
+/**
+ * find an object given its ID
+ *
+ * This function looks for the object whose i_object_id field is i_id. We
+ * use a dichotomy so that lookups are in log2(n).
*****************************************************************************/
-static int find_index_inner( vlc_object_t *p_this,
- vlc_object_t **pp_objects, int i_count )
+void * __vlc_object_get( vlc_object_t *p_this, int i_id )
{
- int i_middle = i_count / 2;
+ int i_max, i_middle;
+ vlc_object_t **pp_objects;
- if( i_count == 0 )
- {
- return 0;
- }
+ vlc_mutex_lock( &structure_lock );
- if( pp_objects[i_middle] == p_this )
- {
- return i_middle;
- }
+ pp_objects = p_this->p_libvlc_global->pp_objects;
- if( i_count == 1 )
+ /* Perform our dichotomy */
+ for( i_max = p_this->p_libvlc_global->i_objects - 1 ; ; )
{
- return 0;
- }
+ i_middle = i_max / 2;
- /* We take advantage of the sorted array */
- if( pp_objects[i_middle]->i_object_id < p_this->i_object_id )
- {
- return i_middle + find_index_inner( p_this, pp_objects + i_middle,
- i_count - i_middle );
- }
- else
- {
- return find_index_inner( p_this, pp_objects, i_middle );
+ if( pp_objects[i_middle]->i_object_id > i_id )
+ {
+ i_max = i_middle;
+ }
+ else if( pp_objects[i_middle]->i_object_id < i_id )
+ {
+ if( i_middle )
+ {
+ pp_objects += i_middle;
+ i_max -= i_middle;
+ }
+ else
+ {
+ /* This happens when there are only two remaining objects */
+ if( pp_objects[i_middle+1]->i_object_id == i_id )
+ {
+ vlc_mutex_unlock( &structure_lock );
+ pp_objects[i_middle+1]->i_refcount++;
+ return pp_objects[i_middle+1];
+ }
+ break;
+ }
+ }
+ else
+ {
+ vlc_mutex_unlock( &structure_lock );
+ pp_objects[i_middle]->i_refcount++;
+ return pp_objects[i_middle];
+ }
+
+ if( i_max == 0 )
+ {
+ /* this means that i_max == i_middle, and since we have already
+ * tested pp_objects[i_middle]), p_found is properly set. */
+ break;
+ }
}
+
+ vlc_mutex_unlock( &structure_lock );
+ return NULL;
}
-/*****************************************************************************
- * vlc_object_find: find a typed object and increment its refcount
+/**
+ ****************************************************************************
+ * find a typed object and increment its refcount
*****************************************************************************
* This function recursively looks for a given object type. i_mode can be one
* of FIND_PARENT, FIND_CHILD or FIND_ANYWHERE.
{
vlc_object_t *p_found;
- vlc_mutex_lock( &p_this->p_vlc->structure_lock );
+ vlc_mutex_lock( &structure_lock );
/* If we are of the requested type ourselves, don't look further */
if( !(i_mode & FIND_STRICT) && p_this->i_object_type == i_type )
{
p_this->i_refcount++;
- vlc_mutex_unlock( &p_this->p_vlc->structure_lock );
+ vlc_mutex_unlock( &structure_lock );
return p_this;
}
/* Otherwise, recursively look for the object */
if( (i_mode & 0x000f) == FIND_ANYWHERE )
{
- p_found = vlc_object_find_inner( VLC_OBJECT(p_this->p_vlc),
- i_type,
- (i_mode & ~0x000f) | FIND_CHILD );
- }
- else
- {
- p_found = vlc_object_find_inner( p_this, i_type, i_mode );
- }
-
- vlc_mutex_unlock( &p_this->p_vlc->structure_lock );
-
- return p_found;
-}
+ vlc_object_t *p_root = p_this;
-static vlc_object_t * vlc_object_find_inner( vlc_object_t *p_this,
- int i_type, int i_mode )
-{
- int i;
- vlc_object_t *p_tmp;
-
- switch( i_mode & 0x000f )
- {
- case FIND_PARENT:
- p_tmp = p_this->p_parent;
- if( p_tmp )
+ /* Find the root */
+ while( p_root->p_parent != NULL &&
+ p_root != VLC_OBJECT( p_this->p_libvlc ) )
{
- if( p_tmp->i_object_type == i_type )
- {
- p_tmp->i_refcount++;
- return p_tmp;
- }
- else
- {
- return vlc_object_find_inner( p_tmp, i_type, i_mode );
- }
+ p_root = p_root->p_parent;
}
- break;
- case FIND_CHILD:
- for( i = p_this->i_children; i--; )
+ p_found = FindObject( p_root, i_type, (i_mode & ~0x000f)|FIND_CHILD );
+ if( p_found == NULL && p_root != VLC_OBJECT( p_this->p_libvlc ) )
{
- p_tmp = p_this->pp_children[i];
- if( p_tmp->i_object_type == i_type )
- {
- p_tmp->i_refcount++;
- return p_tmp;
- }
- else if( p_tmp->i_children )
- {
- p_tmp = vlc_object_find_inner( p_tmp, i_type, i_mode );
- if( p_tmp )
- {
- return p_tmp;
- }
- }
+ p_found = FindObject( VLC_OBJECT( p_this->p_libvlc ),
+ i_type, (i_mode & ~0x000f)|FIND_CHILD );
}
- break;
-
- case FIND_ANYWHERE:
- /* Handled in vlc_object_find */
- break;
+ }
+ else
+ {
+ p_found = FindObject( p_this, i_type, i_mode );
}
- return NULL;
+ vlc_mutex_unlock( &structure_lock );
+
+ return p_found;
}
-/*****************************************************************************
- * vlc_object_yield: increment an object refcount
+/**
+ ****************************************************************************
+ * increment an object refcount
*****************************************************************************/
void __vlc_object_yield( vlc_object_t *p_this )
{
- vlc_mutex_lock( &p_this->p_vlc->structure_lock );
+ vlc_mutex_lock( &structure_lock );
p_this->i_refcount++;
- vlc_mutex_unlock( &p_this->p_vlc->structure_lock );
+ vlc_mutex_unlock( &structure_lock );
}
-/*****************************************************************************
- * vlc_object_release: decrement an object refcount
+/**
+ ****************************************************************************
+ * decrement an object refcount
*****************************************************************************/
void __vlc_object_release( vlc_object_t *p_this )
{
- vlc_mutex_lock( &p_this->p_vlc->structure_lock );
+ vlc_mutex_lock( &structure_lock );
p_this->i_refcount--;
- vlc_mutex_unlock( &p_this->p_vlc->structure_lock );
+ vlc_mutex_unlock( &structure_lock );
}
-/*****************************************************************************
- * vlc_object_attach: attach object to a parent object
+/**
+ ****************************************************************************
+ * attach object to a parent object
*****************************************************************************
* This function sets p_this as a child of p_parent, and p_parent as a parent
* of p_this. This link can be undone using vlc_object_detach.
*****************************************************************************/
void __vlc_object_attach( vlc_object_t *p_this, vlc_object_t *p_parent )
{
- vlc_mutex_lock( &p_this->p_vlc->structure_lock );
+ vlc_mutex_lock( &structure_lock );
/* Attach the parent to its child */
p_this->p_parent = p_parent;
/* Attach the child to its parent */
- p_parent->i_children++;
- p_parent->pp_children = (vlc_object_t **)realloc( p_parent->pp_children,
- p_parent->i_children * sizeof(vlc_object_t *) );
- p_parent->pp_children[p_parent->i_children - 1] = p_this;
+ INSERT_ELEM( p_parent->pp_children, p_parent->i_children,
+ p_parent->i_children, p_this );
/* Climb up the tree to see whether we are connected with the root */
if( p_parent->b_attached )
{
- set_attachment_flag( p_this, VLC_TRUE );
+ SetAttachment( p_this, VLC_TRUE );
}
- vlc_mutex_unlock( &p_this->p_vlc->structure_lock );
+ vlc_mutex_unlock( &structure_lock );
}
-/*****************************************************************************
- * vlc_object_detach: detach object from its parent
+/**
+ ****************************************************************************
+ * detach object from its parent
*****************************************************************************
* This function removes all links between an object and its parent.
*****************************************************************************/
void __vlc_object_detach( vlc_object_t *p_this )
{
- vlc_mutex_lock( &p_this->p_vlc->structure_lock );
+ vlc_mutex_lock( &structure_lock );
if( !p_this->p_parent )
{
msg_Err( p_this, "object is not attached" );
- vlc_mutex_unlock( &p_this->p_vlc->structure_lock );
+ vlc_mutex_unlock( &structure_lock );
return;
}
/* Climb up the tree to see whether we are connected with the root */
if( p_this->p_parent->b_attached )
{
- set_attachment_flag( p_this, VLC_FALSE );
+ SetAttachment( p_this, VLC_FALSE );
+ }
+
+ DetachObject( p_this );
+ vlc_mutex_unlock( &structure_lock );
+}
+
+/**
+ ****************************************************************************
+ * find a list typed objects and increment their refcount
+ *****************************************************************************
+ * This function recursively looks for a given object type. i_mode can be one
+ * of FIND_PARENT, FIND_CHILD or FIND_ANYWHERE.
+ *****************************************************************************/
+vlc_list_t * __vlc_list_find( vlc_object_t *p_this, int i_type, int i_mode )
+{
+ vlc_list_t *p_list;
+ vlc_object_t **pp_current, **pp_end;
+ int i_count = 0, i_index = 0;
+
+ vlc_mutex_lock( &structure_lock );
+
+ /* Look for the objects */
+ switch( i_mode & 0x000f )
+ {
+ case FIND_ANYWHERE:
+ pp_current = p_this->p_libvlc_global->pp_objects;
+ pp_end = pp_current + p_this->p_libvlc_global->i_objects;
+
+ for( ; pp_current < pp_end ; pp_current++ )
+ {
+ if( (*pp_current)->b_attached
+ && (*pp_current)->i_object_type == i_type )
+ {
+ i_count++;
+ }
+ }
+
+ p_list = NewList( i_count );
+ pp_current = p_this->p_libvlc_global->pp_objects;
+
+ for( ; pp_current < pp_end ; pp_current++ )
+ {
+ if( (*pp_current)->b_attached
+ && (*pp_current)->i_object_type == i_type )
+ {
+ ListReplace( p_list, *pp_current, i_index );
+ if( i_index < i_count ) i_index++;
+ }
+ }
+ break;
+
+ case FIND_CHILD:
+ i_count = CountChildren( p_this, i_type );
+ p_list = NewList( i_count );
+
+ /* Check allocation was successful */
+ if( p_list->i_count != i_count )
+ {
+ msg_Err( p_this, "list allocation failed!" );
+ p_list->i_count = 0;
+ break;
+ }
+
+ p_list->i_count = 0;
+ ListChildren( p_list, p_this, i_type );
+ break;
+
+ default:
+ msg_Err( p_this, "unimplemented!" );
+ p_list = NewList( 0 );
+ break;
+ }
+
+ vlc_mutex_unlock( &structure_lock );
+
+ return p_list;
+}
+
+/*****************************************************************************
+ * DumpCommand: print the current vlc structure
+ *****************************************************************************
+ * This function prints either an ASCII tree showing the connections between
+ * vlc objects, and additional information such as their refcount, thread ID,
+ * etc. (command "tree"), or the same data as a simple list (command "list").
+ *****************************************************************************/
+static int DumpCommand( vlc_object_t *p_this, char const *psz_cmd,
+ vlc_value_t oldval, vlc_value_t newval, void *p_data )
+{
+ if( *psz_cmd == 't' )
+ {
+ char psz_foo[2 * MAX_DUMPSTRUCTURE_DEPTH + 1];
+ vlc_object_t *p_object;
+
+ if( *newval.psz_string )
+ {
+ p_object = vlc_object_get( p_this, atoi(newval.psz_string) );
+
+ if( !p_object )
+ {
+ return VLC_ENOOBJ;
+ }
+ }
+ else
+ {
+ p_object = p_this->p_libvlc ? VLC_OBJECT(p_this->p_libvlc) : p_this;
+ }
+
+ vlc_mutex_lock( &structure_lock );
+
+ psz_foo[0] = '|';
+ DumpStructure( p_object, 0, psz_foo );
+
+ vlc_mutex_unlock( &structure_lock );
+
+ if( *newval.psz_string )
+ {
+ vlc_object_release( p_this );
+ }
+ }
+ else if( *psz_cmd == 'l' )
+ {
+ vlc_object_t **pp_current, **pp_end;
+
+ vlc_mutex_lock( &structure_lock );
+
+ pp_current = p_this->p_libvlc_global->pp_objects;
+ pp_end = pp_current + p_this->p_libvlc_global->i_objects;
+
+ for( ; pp_current < pp_end ; pp_current++ )
+ {
+ if( (*pp_current)->b_attached )
+ {
+ PrintObject( *pp_current, "" );
+ }
+ else
+ {
+ printf( " o %.8i %s (not attached)\n",
+ (*pp_current)->i_object_id,
+ (*pp_current)->psz_object_type );
+ }
+ }
+
+ vlc_mutex_unlock( &structure_lock );
+ }
+
+ return VLC_SUCCESS;
+}
+
+/*****************************************************************************
+ * vlc_list_release: free a list previously allocated by vlc_list_find
+ *****************************************************************************
+ * This function decreases the refcount of all objects in the list and
+ * frees the list.
+ *****************************************************************************/
+void vlc_list_release( vlc_list_t *p_list )
+{
+ int i_index;
+
+ for( i_index = 0; i_index < p_list->i_count; i_index++ )
+ {
+ vlc_mutex_lock( &structure_lock );
+
+ p_list->p_values[i_index].p_object->i_refcount--;
+
+ vlc_mutex_unlock( &structure_lock );
+ }
+
+ free( p_list->p_values );
+ free( p_list );
+}
+
+/* Following functions are local */
+
+/*****************************************************************************
+ * FindIndex: find the index of an object in an array of objects
+ *****************************************************************************
+ * This function assumes that p_this can be found in pp_objects. It will not
+ * crash if p_this cannot be found, but will return a wrong value. It is your
+ * duty to check the return value if you are not certain that the object could
+ * be found for sure.
+ *****************************************************************************/
+static int FindIndex( vlc_object_t *p_this,
+ vlc_object_t **pp_objects, int i_count )
+{
+ int i_middle = i_count / 2;
+
+ if( i_count == 0 )
+ {
+ return 0;
+ }
+
+ if( pp_objects[i_middle] == p_this )
+ {
+ return i_middle;
+ }
+
+ if( i_count == 1 )
+ {
+ return 0;
+ }
+
+ /* We take advantage of the sorted array */
+ if( pp_objects[i_middle]->i_object_id < p_this->i_object_id )
+ {
+ return i_middle + FindIndex( p_this, pp_objects + i_middle,
+ i_count - i_middle );
+ }
+ else
+ {
+ return FindIndex( p_this, pp_objects, i_middle );
+ }
+}
+
+static vlc_object_t * FindObject( vlc_object_t *p_this, int i_type, int i_mode )
+{
+ int i;
+ vlc_object_t *p_tmp;
+
+ switch( i_mode & 0x000f )
+ {
+ case FIND_PARENT:
+ p_tmp = p_this->p_parent;
+ if( p_tmp )
+ {
+ if( p_tmp->i_object_type == i_type )
+ {
+ p_tmp->i_refcount++;
+ return p_tmp;
+ }
+ else
+ {
+ return FindObject( p_tmp, i_type, i_mode );
+ }
+ }
+ break;
+
+ case FIND_CHILD:
+ for( i = p_this->i_children; i--; )
+ {
+ p_tmp = p_this->pp_children[i];
+ if( p_tmp->i_object_type == i_type )
+ {
+ p_tmp->i_refcount++;
+ return p_tmp;
+ }
+ else if( p_tmp->i_children )
+ {
+ p_tmp = FindObject( p_tmp, i_type, i_mode );
+ if( p_tmp )
+ {
+ return p_tmp;
+ }
+ }
+ }
+ break;
+
+ case FIND_ANYWHERE:
+ /* Handled in vlc_object_find */
+ break;
}
- vlc_object_detach_inner( p_this );
- vlc_mutex_unlock( &p_this->p_vlc->structure_lock );
+ return NULL;
}
-static void vlc_object_detach_inner( vlc_object_t *p_this )
+static void DetachObject( vlc_object_t *p_this )
{
vlc_object_t *p_parent = p_this->p_parent;
int i_index, i;
}
/*****************************************************************************
- * set_attachment_flag: recursively set the b_attached flag of a subtree.
+ * SetAttachment: recursively set the b_attached flag of a subtree.
*****************************************************************************
* This function is used by the attach and detach functions to propagate
* the b_attached flag in a subtree.
*****************************************************************************/
-static void set_attachment_flag( vlc_object_t *p_this, vlc_bool_t b_attached )
+static void SetAttachment( vlc_object_t *p_this, vlc_bool_t b_attached )
{
int i_index;
for( i_index = p_this->i_children ; i_index-- ; )
{
- set_attachment_flag( p_this->pp_children[i_index], b_attached );
+ SetAttachment( p_this->pp_children[i_index], b_attached );
}
p_this->b_attached = b_attached;
}
-static void vlc_print_object( vlc_object_t *p_this, const char *psz_prefix )
+static void PrintObject( vlc_object_t *p_this, const char *psz_prefix )
{
char psz_children[20], psz_refcount[20], psz_thread[20], psz_name[50];
psz_thread[19] = '\0';
}
- msg_Info( p_this->p_vlc, "%so %.6x %s%s%s%s%s", psz_prefix,
- p_this->i_object_id, p_this->psz_object_type,
- psz_name, psz_thread, psz_refcount, psz_children );
+ printf( " %so %.8i %s%s%s%s%s\n", psz_prefix,
+ p_this->i_object_id, p_this->psz_object_type,
+ psz_name, psz_thread, psz_refcount, psz_children );
}
-/*****************************************************************************
- * vlc_liststructure: print the current vlc objects
- *****************************************************************************
- * This function prints an ASCII tree showing the connections between vlc
- * objects, and additional information such as their refcount, thread ID,
- * address, etc.
- *****************************************************************************/
-void __vlc_liststructure( vlc_object_t *p_this )
-{
- vlc_object_t ** p_all;
- vlc_object_t * p_current;
- int i_total;
-
- vlc_mutex_lock( &p_this->p_vlc->structure_lock );
-
- i_total = p_this->p_vlc->i_objects;
- p_all = p_this->p_vlc->pp_objects;
-
- for( p_current = p_all[0] ; p_current < p_all[i_total] ; p_current++ )
- {
- if( p_current->b_attached )
- {
- vlc_print_object( p_current, "" );
- }
- else
- {
- msg_Info( p_this->p_vlc, "o %.6x %s (not attached)",
- p_current->i_object_id, p_current->psz_object_type );
- }
- }
-
- vlc_mutex_unlock( &p_this->p_vlc->structure_lock );
-}
-
-/*****************************************************************************
- * vlc_dumpstructure: print the current vlc structure
- *****************************************************************************
- * This function prints an ASCII tree showing the connections between vlc
- * objects, and additional information such as their refcount, thread ID,
- * address, etc.
- *****************************************************************************/
-void __vlc_dumpstructure( vlc_object_t *p_this )
-{
- char psz_foo[2 * MAX_DUMPSTRUCTURE_DEPTH + 1];
-
- vlc_mutex_lock( &p_this->p_vlc->structure_lock );
- psz_foo[0] = '|';
- vlc_dumpstructure_inner( p_this, 0, psz_foo );
- vlc_mutex_unlock( &p_this->p_vlc->structure_lock );
-}
-
-static void vlc_dumpstructure_inner( vlc_object_t *p_this,
- int i_level, char *psz_foo )
+static void DumpStructure( vlc_object_t *p_this, int i_level, char *psz_foo )
{
int i;
char i_back = psz_foo[i_level];
psz_foo[i_level] = '\0';
- vlc_print_object( p_this, psz_foo );
+ PrintObject( p_this, psz_foo );
psz_foo[i_level] = i_back;
psz_foo[i_level+1] = '-';
psz_foo[i_level+2] = '\0';
- vlc_dumpstructure_inner( p_this->pp_children[i], i_level + 2, psz_foo );
+ DumpStructure( p_this->pp_children[i], i_level + 2, psz_foo );
+ }
+}
+
+static vlc_list_t * NewList( int i_count )
+{
+ vlc_list_t * p_list = (vlc_list_t *)malloc( sizeof( vlc_list_t ) );
+ if( p_list == NULL )
+ {
+ return NULL;
+ }
+
+ p_list->i_count = i_count;
+
+ if( i_count == 0 )
+ {
+ p_list->p_values = NULL;
+ return p_list;
+ }
+
+ p_list->p_values = malloc( i_count * sizeof( vlc_value_t ) );
+ if( p_list->p_values == NULL )
+ {
+ p_list->i_count = 0;
+ return p_list;
+ }
+
+ return p_list;
+}
+
+static void ListReplace( vlc_list_t *p_list, vlc_object_t *p_object,
+ int i_index )
+{
+ if( p_list == NULL || i_index >= p_list->i_count )
+ {
+ return;
}
+
+ p_object->i_refcount++;
+
+ p_list->p_values[i_index].p_object = p_object;
+
+ return;
}
+/*static void ListAppend( vlc_list_t *p_list, vlc_object_t *p_object )
+{
+ if( p_list == NULL )
+ {
+ return;
+ }
+
+ p_list->p_values = realloc( p_list->p_values, (p_list->i_count + 1)
+ * sizeof( vlc_value_t ) );
+ if( p_list->p_values == NULL )
+ {
+ p_list->i_count = 0;
+ return;
+ }
+
+ p_object->i_refcount++;
+
+ p_list->p_values[p_list->i_count].p_object = p_object;
+ p_list->i_count++;
+
+ return;
+}*/
+
+static int CountChildren( vlc_object_t *p_this, int i_type )
+{
+ vlc_object_t *p_tmp;
+ int i, i_count = 0;
+
+ for( i = 0; i < p_this->i_children; i++ )
+ {
+ p_tmp = p_this->pp_children[i];
+
+ if( p_tmp->i_object_type == i_type )
+ {
+ i_count++;
+ }
+
+ if( p_tmp->i_children )
+ {
+ i_count += CountChildren( p_tmp, i_type );
+ }
+ }
+
+ return i_count;
+}
+
+static void ListChildren( vlc_list_t *p_list, vlc_object_t *p_this, int i_type )
+{
+ vlc_object_t *p_tmp;
+ int i;
+
+ for( i = 0; i < p_this->i_children; i++ )
+ {
+ p_tmp = p_this->pp_children[i];
+
+ if( p_tmp->i_object_type == i_type )
+ {
+ ListReplace( p_list, p_tmp, p_list->i_count++ );
+ }
+
+ if( p_tmp->i_children )
+ {
+ ListChildren( p_list, p_tmp, i_type );
+ }
+ }
+}
projects / vlc / blobdiff