xref: /third_party/curl/lib/llist.h (revision 13498266) 
1#ifndef HEADER_CURL_LLIST_H
2#define HEADER_CURL_LLIST_H
3/***************************************************************************
4 *                                  _   _ ____  _
5 *  Project                     ___| | | |  _ \| |
6 *                             / __| | | | |_) | |
7 *                            | (__| |_| |  _ <| |___
8 *                             \___|\___/|_| \_\_____|
9 *
10 * Copyright (C) Daniel Stenberg, <daniel@haxx.se>, et al.
11 *
12 * This software is licensed as described in the file COPYING, which
13 * you should have received as part of this distribution. The terms
14 * are also available at https://curl.se/docs/copyright.html.
15 *
16 * You may opt to use, copy, modify, merge, publish, distribute and/or sell
17 * copies of the Software, and permit persons to whom the Software is
18 * furnished to do so, under the terms of the COPYING file.
19 *
20 * This software is distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY
21 * KIND, either express or implied.
22 *
23 * SPDX-License-Identifier: curl
24 *
25 ***************************************************************************/
26
27#include "curl_setup.h"
28#include <stddef.h>
29
30typedef void (*Curl_llist_dtor)(void *, void *);
31
32struct Curl_llist_element {
33  void *ptr;
34  struct Curl_llist_element *prev;
35  struct Curl_llist_element *next;
36};
37
38struct Curl_llist {
39  struct Curl_llist_element *head;
40  struct Curl_llist_element *tail;
41  Curl_llist_dtor dtor;
42  size_t size;
43};
44
45void Curl_llist_init(struct Curl_llist *, Curl_llist_dtor);
46void Curl_llist_insert_next(struct Curl_llist *, struct Curl_llist_element *,
47                            const void *, struct Curl_llist_element *node);
48void Curl_llist_remove(struct Curl_llist *, struct Curl_llist_element *,
49                       void *);
50size_t Curl_llist_count(struct Curl_llist *);
51void Curl_llist_destroy(struct Curl_llist *, void *);
52#endif /* HEADER_CURL_LLIST_H */
53