-
-#ifdef LIBVLC_REFCHECK
-# if defined(HAVE_EXECINFO_H) && defined(HAVE_BACKTRACE)
-# include <execinfo.h>
-# endif
-
-void vlc_refcheck (vlc_object_t *obj)
-{
- static unsigned errors = 0;
- if (errors > 100)
- return;
-
- /* Anyone can use the root object (though it should not exist) */
- if (obj == VLC_OBJECT (vlc_global ()))
- return;
-
- /* Anyone can use its libvlc instance object */
- if (obj == VLC_OBJECT (obj->p_libvlc))
- return;
-
- /* The thread that created the object holds the initial reference */
- vlc_object_internals_t *priv = vlc_internals (obj);
-#if defined (LIBVLC_USE_PTHREAD)
- if (pthread_equal (priv->creator_id, pthread_self ()))
-#elif defined WIN32
- if (priv->creator_id == GetCurrentThreadId ())
-#else
- if (0)
-#endif
- return;
-
- /* A thread can use its own object without references! */
- vlc_object_t *caller = vlc_threadobj ();
- if (caller == obj)
- return;
-#if 0
- /* The calling thread is younger than the object.
- * Access could be valid through cross-thread synchronization;
- * we would need better accounting. */
- if (caller && (caller->i_object_id > obj->i_object_id))
- return;
-#endif
- int refs;
- vlc_spin_lock (&priv->ref_spin);
- refs = priv->i_refcount;
- vlc_spin_unlock (&priv->ref_spin);
-
- for (held_list_t *hlcur = vlc_threadvar_get (&held_objects);
- hlcur != NULL; hlcur = hlcur->next)
- if (hlcur->obj == obj)
- return;
-
- int canc = vlc_savecancel ();
-
- fprintf (stderr, "The %s %s thread object is accessing...\n"
- "the %s %s object without references.\n",
- caller && caller->psz_object_name
- ? caller->psz_object_name : "unnamed",
- caller ? caller->psz_object_type : "main",
- obj->psz_object_name ? obj->psz_object_name : "unnamed",
- obj->psz_object_type);
- fflush (stderr);
-
-#ifdef HAVE_BACKTRACE
- void *stack[20];
- int stackdepth = backtrace (stack, sizeof (stack) / sizeof (stack[0]));
- backtrace_symbols_fd (stack, stackdepth, 2);
-#endif
-
- if (++errors == 100)
- fprintf (stderr, "Too many reference errors!\n");
- vlc_restorecancel (canc);
-}
-
-static void held_objects_destroy (void *data)
-{
- VLC_UNUSED( data );
- held_list_t *hl = vlc_threadvar_get (&held_objects);
- vlc_object_t *caller = vlc_threadobj ();
-
- int canc = vlc_savecancel ();
-
- while (hl != NULL)
- {
- held_list_t *buf = hl->next;
- vlc_object_t *obj = hl->obj;
-
- fprintf (stderr, "The %s %s thread object leaked a reference to...\n"
- "the %s %s object.\n",
- caller && caller->psz_object_name
- ? caller->psz_object_name : "unnamed",
- caller ? caller->psz_object_type : "main",
- obj->psz_object_name ? obj->psz_object_name : "unnamed",
- obj->psz_object_type);
- free (hl);
- hl = buf;
- }
- vlc_restorecancel (canc);
-}
-#endif