FreeTDS API

dlist.h
1 /* Dlist - dynamic list
2 * Copyright (C) 2016 Frediano Ziglio
3 *
4 * This program is free software; you can redistribute it and/or modify
5 * it under the terms of the GNU General Public License as published by
6 * the Free Software Foundation; either version 2 of the License, or
7 * (at your option) any later version.
8 *
9 * This program is distributed in the hope that it will be useful,
10 * but WITHOUT ANY WARRANTY; without even the implied warranty of
11 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
12 * GNU General Public License for more details.
13 *
14 * You should have received a copy of the GNU General Public License
15 * along with this program; if not, write to the Free Software
16 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
17 *
18 */
19
20 #ifndef TDS_DLIST_H
21 #define TDS_DLIST_H
22
23 typedef struct dlist_ring {
24 struct dlist_ring *next;
25 struct dlist_ring *prev;
26 } dlist_ring;
27
28 #if ENABLE_EXTRA_CHECKS
29 void dlist_ring_check(dlist_ring *ring);
30 #endif
31
32 #define DLIST_FIELDS(name) \
33 dlist_ring name
34
35 #define DLIST_FOREACH(prefix, list, p) \
36 for (p = prefix ## _ ## first(list); p != NULL; p = prefix ## _ ## next(list, p))
37
38 static inline void dlist_insert_after(dlist_ring *ring_pos, dlist_ring *ring_item)
39 {
40 assert(!ring_item->next && !ring_item->prev);
41 ring_pos->next->prev = ring_item;
42 ring_item->prev = ring_pos;
43 ring_item->next = ring_pos->next;
44 ring_pos->next = ring_item;
45 assert(ring_item->next && ring_item->prev);
46 }
47
48 #endif /* TDS_DLIST_H */
dlist_ring
Definition: dlist.h:23