| 1 | #ifndef HEADER_CURL_LLIST_H
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| 2 | #define HEADER_CURL_LLIST_H
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| 3 | /***************************************************************************
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| 4 | * _ _ ____ _
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| 5 | * Project ___| | | | _ \| |
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| 6 | * / __| | | | |_) | |
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| 7 | * | (__| |_| | _ <| |___
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| 8 | * \___|\___/|_| \_\_____|
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| 9 | *
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| 10 | * Copyright (C) Daniel Stenberg, <[email protected]>, et al.
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| 11 | *
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| 12 | * This software is licensed as described in the file COPYING, which
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| 13 | * you should have received as part of this distribution. The terms
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| 14 | * are also available at https://curl.se/docs/copyright.html.
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| 15 | *
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| 16 | * You may opt to use, copy, modify, merge, publish, distribute and/or sell
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| 17 | * copies of the Software, and permit persons to whom the Software is
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| 18 | * furnished to do so, under the terms of the COPYING file.
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| 19 | *
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| 20 | * This software is distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY
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| 21 | * KIND, either express or implied.
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| 22 | *
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| 23 | * SPDX-License-Identifier: curl
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| 24 | *
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| 25 | ***************************************************************************/
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| 26 |
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| 27 | #include "curl_setup.h"
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| 28 | #include <stddef.h>
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| 29 |
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| 30 | typedef void (*Curl_llist_dtor)(void *user, void *elem);
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| 31 |
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| 32 | /* none of these struct members should be referenced directly, use the
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| 33 | dedicated functions */
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| 34 |
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| 35 | struct Curl_llist {
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| 36 | struct Curl_llist_node *_head;
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| 37 | struct Curl_llist_node *_tail;
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| 38 | Curl_llist_dtor _dtor;
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| 39 | size_t _size;
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| 40 | #ifdef DEBUGBUILD
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| 41 | int _init; /* detect API usage mistakes */
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| 42 | #endif
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| 43 | };
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| 44 |
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| 45 | struct Curl_llist_node {
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| 46 | struct Curl_llist *_list; /* the list where this belongs */
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| 47 | void *_ptr;
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| 48 | struct Curl_llist_node *_prev;
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| 49 | struct Curl_llist_node *_next;
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| 50 | #ifdef DEBUGBUILD
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| 51 | int _init; /* detect API usage mistakes */
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| 52 | #endif
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| 53 | };
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| 54 |
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| 55 | void Curl_llist_init(struct Curl_llist *, Curl_llist_dtor);
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| 56 | void Curl_llist_insert_next(struct Curl_llist *, struct Curl_llist_node *,
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| 57 | const void *, struct Curl_llist_node *node);
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| 58 | void Curl_llist_append(struct Curl_llist *,
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| 59 | const void *, struct Curl_llist_node *node);
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| 60 | void Curl_node_uremove(struct Curl_llist_node *, void *);
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| 61 | void Curl_node_remove(struct Curl_llist_node *);
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| 62 | void Curl_llist_destroy(struct Curl_llist *, void *);
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| 63 |
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| 64 | /* Curl_llist_head() returns the first 'struct Curl_llist_node *', which
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| 65 | might be NULL */
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| 66 | struct Curl_llist_node *Curl_llist_head(struct Curl_llist *list);
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| 67 |
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| 68 | /* Curl_llist_tail() returns the last 'struct Curl_llist_node *', which
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| 69 | might be NULL */
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| 70 | struct Curl_llist_node *Curl_llist_tail(struct Curl_llist *list);
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| 71 |
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| 72 | /* Curl_llist_count() returns a size_t the number of nodes in the list */
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| 73 | size_t Curl_llist_count(struct Curl_llist *list);
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| 74 |
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| 75 | /* Curl_node_elem() returns the custom data from a Curl_llist_node */
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| 76 | void *Curl_node_elem(struct Curl_llist_node *n);
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| 77 |
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| 78 | /* Curl_node_next() returns the next element in a list from a given
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| 79 | Curl_llist_node */
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| 80 | struct Curl_llist_node *Curl_node_next(struct Curl_llist_node *n);
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| 81 |
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| 82 | /* Curl_node_prev() returns the previous element in a list from a given
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| 83 | Curl_llist_node */
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| 84 | struct Curl_llist_node *Curl_node_prev(struct Curl_llist_node *n);
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| 85 |
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| 86 | /* Curl_node_llist() return the list the node is in or NULL. */
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| 87 | struct Curl_llist *Curl_node_llist(struct Curl_llist_node *n);
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| 88 |
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| 89 | #endif /* HEADER_CURL_LLIST_H */
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