1#ifndef HEADER_CURL_SPLAY_H
2#define HEADER_CURL_SPLAY_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#include "curl_setup.h"
27#include "timeval.h"
28
29struct Curl_tree {
30 struct Curl_tree *smaller; /* smaller node */
31 struct Curl_tree *larger; /* larger node */
32 struct Curl_tree *samen; /* points to the next node with identical key */
33 struct Curl_tree *samep; /* points to the prev node with identical key */
34 struct curltime key; /* this node's "sort" key */
35 void *payload; /* data the splay code doesn't care about */
36};
37
38struct Curl_tree *Curl_splay(struct curltime i,
39 struct Curl_tree *t);
40
41struct Curl_tree *Curl_splayinsert(struct curltime key,
42 struct Curl_tree *t,
43 struct Curl_tree *newnode);
44
45struct Curl_tree *Curl_splaygetbest(struct curltime key,
46 struct Curl_tree *t,
47 struct Curl_tree **removed);
48
49int Curl_splayremove(struct Curl_tree *t,
50 struct Curl_tree *removenode,
51 struct Curl_tree **newroot);
52
53#define Curl_splaycomparekeys(i,j) ( ((i.tv_sec) < (j.tv_sec)) ? -1 : \
54 ( ((i.tv_sec) > (j.tv_sec)) ? 1 : \
55 ( ((i.tv_usec) < (j.tv_usec)) ? -1 : \
56 ( ((i.tv_usec) > (j.tv_usec)) ? 1 : 0))))
57
58#endif /* HEADER_CURL_SPLAY_H */
59