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      1 /* -*- mode: C; c-file-style: "gnu" -*- */
      2 /* dbus-list.h Generic linked list utility (internal to D-Bus implementation)
      3  *
      4  * Copyright (C) 2002, 2003 Red Hat, Inc.
      5  *
      6  * Licensed under the Academic Free License version 2.1
      7  *
      8  * This program is free software; you can redistribute it and/or modify
      9  * it under the terms of the GNU General Public License as published by
     10  * the Free Software Foundation; either version 2 of the License, or
     11  * (at your option) any later version.
     12  *
     13  * This program is distributed in the hope that it will be useful,
     14  * but WITHOUT ANY WARRANTY; without even the implied warranty of
     15  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
     16  * GNU General Public License for more details.
     17  *
     18  * You should have received a copy of the GNU General Public License
     19  * along with this program; if not, write to the Free Software
     20  * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
     21  *
     22  */
     23 
     24 #ifndef DBUS_LIST_H
     25 #define DBUS_LIST_H
     26 
     27 #include <dbus/dbus-internals.h>
     28 #include <dbus/dbus-memory.h>
     29 #include <dbus/dbus-types.h>
     30 #include <dbus/dbus-sysdeps.h>
     31 
     32 DBUS_BEGIN_DECLS
     33 
     34 struct DBusList
     35 {
     36   DBusList *prev; /**< Previous list node. */
     37   DBusList *next; /**< Next list node. */
     38   void     *data; /**< Data stored at this element. */
     39 };
     40 dbus_bool_t _dbus_list_append             (DBusList **list,
     41                                            void      *data);
     42 dbus_bool_t _dbus_list_prepend            (DBusList **list,
     43                                            void      *data);
     44 dbus_bool_t _dbus_list_insert_before      (DBusList **list,
     45                                            DBusList  *before_this_link,
     46                                            void      *data);
     47 dbus_bool_t _dbus_list_insert_after       (DBusList **list,
     48                                            DBusList  *after_this_link,
     49                                            void      *data);
     50 void        _dbus_list_insert_before_link (DBusList **list,
     51                                            DBusList  *before_this_link,
     52                                            DBusList  *link);
     53 void        _dbus_list_insert_after_link  (DBusList **list,
     54                                            DBusList  *after_this_link,
     55                                            DBusList  *link);
     56 dbus_bool_t _dbus_list_remove             (DBusList **list,
     57                                            void      *data);
     58 dbus_bool_t _dbus_list_remove_last        (DBusList **list,
     59                                            void      *data);
     60 void        _dbus_list_remove_link        (DBusList **list,
     61                                            DBusList  *link);
     62 DBusList*   _dbus_list_find_last          (DBusList **list,
     63                                            void      *data);
     64 void        _dbus_list_clear              (DBusList **list);
     65 DBusList*   _dbus_list_get_first_link     (DBusList **list);
     66 DBusList*   _dbus_list_get_last_link      (DBusList **list);
     67 void*       _dbus_list_get_last           (DBusList **list);
     68 void*       _dbus_list_get_first          (DBusList **list);
     69 void*       _dbus_list_pop_first          (DBusList **list);
     70 void*       _dbus_list_pop_last           (DBusList **list);
     71 DBusList*   _dbus_list_pop_first_link     (DBusList **list);
     72 DBusList*   _dbus_list_pop_last_link      (DBusList **list);
     73 dbus_bool_t _dbus_list_copy               (DBusList **list,
     74                                            DBusList **dest);
     75 int         _dbus_list_get_length         (DBusList **list);
     76 DBusList*   _dbus_list_alloc_link         (void      *data);
     77 void        _dbus_list_free_link          (DBusList  *link);
     78 void        _dbus_list_unlink             (DBusList **list,
     79                                            DBusList  *link);
     80 void        _dbus_list_append_link        (DBusList **list,
     81                                            DBusList  *link);
     82 void        _dbus_list_prepend_link       (DBusList **list,
     83                                            DBusList  *link);
     84 dbus_bool_t _dbus_list_length_is_one      (DBusList **list);
     85 
     86 
     87 
     88 
     89 void _dbus_list_foreach (DBusList            **list,
     90                          DBusForeachFunction   function,
     91                          void                 *data);
     92 
     93 #define _dbus_list_get_next_link(list, link) ((link)->next == *(list) ? NULL : (link)->next)
     94 #define _dbus_list_get_prev_link(list, link) ((link) == *(list) ? NULL : (link)->prev)
     95 
     96 DBUS_END_DECLS
     97 
     98 #endif /* DBUS_LIST_H */
     99