src/cx/linked_list.h

Tue, 05 Oct 2021 13:04:20 +0200

author
Mike Becker <universe@uap-core.de>
date
Tue, 05 Oct 2021 13:04:20 +0200
changeset 467
95e42a963520
parent 466
28bc3e10ac28
child 468
75ae1dccd101
permissions
-rw-r--r--

remove unused cxLinkedListRecalculateSize()

It is not clear what this function was ever supposed to do.

universe@398 1 /*
universe@398 2 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS HEADER.
universe@398 3 *
universe@398 4 * Copyright 2021 Mike Becker, Olaf Wintermann All rights reserved.
universe@398 5 *
universe@398 6 * Redistribution and use in source and binary forms, with or without
universe@398 7 * modification, are permitted provided that the following conditions are met:
universe@398 8 *
universe@398 9 * 1. Redistributions of source code must retain the above copyright
universe@398 10 * notice, this list of conditions and the following disclaimer.
universe@398 11 *
universe@398 12 * 2. Redistributions in binary form must reproduce the above copyright
universe@398 13 * notice, this list of conditions and the following disclaimer in the
universe@398 14 * documentation and/or other materials provided with the distribution.
universe@398 15 *
universe@398 16 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
universe@398 17 * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
universe@398 18 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
universe@398 19 * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE
universe@398 20 * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
universe@398 21 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
universe@398 22 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
universe@398 23 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
universe@398 24 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
universe@398 25 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
universe@398 26 * POSSIBILITY OF SUCH DAMAGE.
universe@398 27 */
universe@453 28 /**
universe@453 29 * \file linked_list.h
universe@453 30 * \brief Linked list implementation.
universe@453 31 * \details Also provides several low-level functions for custom linked list implementations.
universe@453 32 * \author Mike Becker
universe@453 33 * \author Olaf Wintermann
universe@453 34 * \version 3.0
universe@453 35 * \copyright 2-Clause BSD License
universe@453 36 */
universe@398 37
universe@398 38 #ifndef UCX_LINKED_LIST_H
universe@398 39 #define UCX_LINKED_LIST_H
universe@398 40
universe@400 41 #include <stddef.h>
universe@398 42 #include "list.h"
universe@398 43
universe@415 44 #ifdef __cplusplus
universe@415 45 extern "C" {
universe@415 46 #endif
universe@415 47
universe@466 48 /**
universe@466 49 * Allocates a linked list for storing elements with \p item_size bytes each.
universe@466 50 *
universe@466 51 * Elements added to the list are copied.
universe@466 52 *
universe@466 53 * @param allocator the allocator for allocating the list nodes
universe@466 54 * @param comparator the comparator for the elements
universe@466 55 * @param item_size the size of each element in bytes
universe@466 56 * @return the created list
universe@466 57 */
universe@453 58 CxList cxLinkedListCreate(CxAllocator allocator, CxListComparator comparator, size_t item_size);
universe@453 59
universe@466 60 /**
universe@466 61 * Allocates a linked list for storing pointers.
universe@466 62 *
universe@466 63 * If you want to store the elements directly in this list, use cxLinkedListCreate().
universe@466 64 *
universe@466 65 * @param allocator the allocator for allocating the list nodes
universe@466 66 * @param comparator the comparator for the elements
universe@466 67 * @return the created list
universe@466 68 */
universe@466 69 CxList cxPointerLinkedListCreate(CxAllocator allocator, CxListComparator comparator);
universe@466 70
universe@466 71 /**
universe@466 72 * Deallocates the memory of the entire list.
universe@466 73 *
universe@466 74 * \attention If this is a pointer list, the memory the pointers are referring to is \em not freed.
universe@466 75 *
universe@466 76 * @param list the list
universe@466 77 */
universe@453 78 void cxLinkedListDestroy(CxList list);
universe@453 79
universe@438 80 /**
universe@438 81 * Finds the node at a certain index.
universe@438 82 *
universe@438 83 * This function can be used to start at an arbitrary position within the list.
universe@438 84 * If the search index is large than the start index, \p loc_advance must denote
universe@438 85 * the location of some sort of \c next pointer (i.e. a pointer to the next node).
universe@438 86 * But it is also possible that the search index is smaller than the start index
universe@438 87 * (e.g. in cases where traversing a list backwards is faster) in which case
universe@438 88 * \p loc_advance must denote the location of some sort of \c prev pointer
universe@438 89 * (i.e. a pointer to the previous node).
universe@438 90 *
universe@438 91 * @param start a pointer to the start node
universe@438 92 * @param start_index the start index
universe@438 93 * @param loc_advance the location of the pointer to advance
universe@438 94 * @param index the search index
universe@438 95 * @return the node found at the specified index
universe@438 96 */
universe@438 97 void *cx_linked_list_at(void *start, size_t start_index, ptrdiff_t loc_advance, size_t index);
universe@438 98
universe@453 99 /**
universe@453 100 * Finds the last node in a linked list.
universe@453 101 *
universe@456 102 * The function starts with the pointer denoted by \p begin and traverses the list
universe@456 103 * along a next pointer whose location within the node struct is
universe@453 104 * denoted by \p loc_next.
universe@453 105 *
universe@456 106 * @param begin a pointer to the begin node
universe@456 107 * @param loc_next the location of the \c next pointer
universe@456 108 * @return a pointer to the last node or \c NULL if \p begin is \c NULL
universe@453 109 */
universe@456 110 void *cx_linked_list_last(void *begin, ptrdiff_t loc_next);
universe@398 111
universe@453 112 /**
universe@453 113 * Adds a new node to a linked list.
universe@453 114 *
universe@453 115 * \remark One of the pointers \p begin and \p end may be \c NULL, but not both.
universe@453 116 *
universe@453 117 * @param begin a pointer to the begin node pointer (if your list has one)
universe@453 118 * @param end a pointer to the end node pointer (if your list has one)
universe@453 119 * @param loc_prev the location of a \c prev pointer within your node struct (negative if your struct does not have one)
universe@453 120 * @param loc_next the location of a \c next pointer within your node struct (negative if your struct does not have one)
universe@453 121 * @param new_node a pointer to the node that shall be appended
universe@453 122 */
universe@453 123 void cx_linked_list_add(void **begin, void **end, ptrdiff_t loc_prev, ptrdiff_t loc_next, void *new_node);
universe@406 124
universe@415 125 #ifdef __cplusplus
universe@415 126 } /* extern "C" */
universe@415 127 #endif
universe@415 128
universe@398 129 #endif /* UCX_LINKED_LIST_H */

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