splay.h (2405B)
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 "curlx/timeval.h" 28 29 /* only use function calls to access this struct */ 30 struct Curl_tree { 31 struct Curl_tree *smaller; /* smaller node */ 32 struct Curl_tree *larger; /* larger node */ 33 struct Curl_tree *samen; /* points to the next node with identical key */ 34 struct Curl_tree *samep; /* points to the prev node with identical key */ 35 struct curltime key; /* this node's "sort" key */ 36 void *ptr; /* data the splay code does not care about */ 37 }; 38 39 struct Curl_tree *Curl_splay(struct curltime i, 40 struct Curl_tree *t); 41 42 struct Curl_tree *Curl_splayinsert(struct curltime key, 43 struct Curl_tree *t, 44 struct Curl_tree *newnode); 45 46 struct Curl_tree *Curl_splaygetbest(struct curltime key, 47 struct Curl_tree *t, 48 struct Curl_tree **removed); 49 50 int Curl_splayremove(struct Curl_tree *t, 51 struct Curl_tree *removenode, 52 struct Curl_tree **newroot); 53 54 /* set and get the custom payload for this tree node */ 55 void Curl_splayset(struct Curl_tree *node, void *payload); 56 void *Curl_splayget(struct Curl_tree *node); 57 58 #endif /* HEADER_CURL_SPLAY_H */