src/cx/collection.h

Thu, 23 May 2024 20:31:37 +0200

author
Mike Becker <universe@uap-core.de>
date
Thu, 23 May 2024 20:31:37 +0200
changeset 855
35bcb3216c0d
parent 854
fe0d69d72bcd
child 856
6bbbf219251d
permissions
-rw-r--r--

fix inconsistent use of item_size and elem_size

universe@677 1 /*
universe@677 2 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS HEADER.
universe@677 3 *
universe@677 4 * Copyright 2023 Mike Becker, Olaf Wintermann All rights reserved.
universe@677 5 *
universe@677 6 * Redistribution and use in source and binary forms, with or without
universe@677 7 * modification, are permitted provided that the following conditions are met:
universe@677 8 *
universe@677 9 * 1. Redistributions of source code must retain the above copyright
universe@677 10 * notice, this list of conditions and the following disclaimer.
universe@677 11 *
universe@677 12 * 2. Redistributions in binary form must reproduce the above copyright
universe@677 13 * notice, this list of conditions and the following disclaimer in the
universe@677 14 * documentation and/or other materials provided with the distribution.
universe@677 15 *
universe@677 16 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
universe@677 17 * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
universe@677 18 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
universe@677 19 * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE
universe@677 20 * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
universe@677 21 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
universe@677 22 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
universe@677 23 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
universe@677 24 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
universe@677 25 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
universe@677 26 * POSSIBILITY OF SUCH DAMAGE.
universe@677 27 */
universe@677 28 /**
universe@677 29 * \file collection.h
universe@677 30 * \brief Common definitions for various collection implementations.
universe@677 31 * \author Mike Becker
universe@677 32 * \author Olaf Wintermann
universe@677 33 * \copyright 2-Clause BSD License
universe@677 34 */
universe@677 35
universe@677 36 #ifndef UCX_COLLECTION_H
universe@677 37 #define UCX_COLLECTION_H
universe@677 38
universe@677 39 #include "allocator.h"
universe@677 40 #include "iterator.h"
universe@854 41 #include "compare.h"
universe@677 42
universe@677 43 #ifdef __cplusplus
universe@677 44 extern "C" {
universe@677 45 #endif
universe@677 46
universe@677 47 /**
universe@677 48 * Special constant used for creating collections that are storing pointers.
universe@677 49 */
universe@677 50 #define CX_STORE_POINTERS 0
universe@677 51
universe@677 52 /**
universe@854 53 * Base attributes of a collection.
universe@677 54 */
universe@854 55 struct cx_collection_s {
universe@854 56 /**
universe@854 57 * The allocator to use.
universe@854 58 */
universe@854 59 CxAllocator const *allocator;
universe@854 60 /**
universe@854 61 * The comparator function for the elements.
universe@854 62 */
universe@854 63 cx_compare_func cmpfunc;
universe@854 64 /**
universe@854 65 * The size of each element.
universe@854 66 */
universe@855 67 size_t elem_size;
universe@854 68 /**
universe@854 69 * The number of currently stored elements.
universe@854 70 */
universe@854 71 size_t size;
universe@854 72 /**
universe@854 73 * An optional simple destructor for the collection's elements.
universe@854 74 *
universe@854 75 * @attention Read the documentation of the particular collection implementation
universe@854 76 * whether this destructor shall only destroy the contents or also free the memory.
universe@854 77 */
universe@854 78 cx_destructor_func simple_destructor;
universe@854 79 /**
universe@854 80 * An optional advanced destructor for the collection's elements.
universe@854 81 *
universe@854 82 * @attention Read the documentation of the particular collection implementation
universe@854 83 * whether this destructor shall only destroy the contents or also free the memory.
universe@854 84 */
universe@854 85 cx_destructor_func2 advanced_destructor;
universe@854 86 /**
universe@854 87 * The pointer to additional data that is passed to the advanced destructor.
universe@854 88 */
universe@854 89 void *destructor_data;
universe@854 90 /**
universe@854 91 * Indicates if this list is supposed to store pointers
universe@854 92 * instead of copies of the actual objects.
universe@854 93 */
universe@854 94 bool store_pointer;
universe@854 95 };
universe@677 96
universe@677 97 /**
universe@677 98 * Use this macro to declare common members for a collection structure.
universe@677 99 */
universe@854 100 #define CX_COLLECTION_BASE struct cx_collection_s base
universe@677 101
universe@677 102 /**
universe@677 103 * Invokes the simple destructor function for a specific element.
universe@677 104 *
universe@677 105 * Usually only used by collection implementations. There should be no need
universe@677 106 * to invoke this macro manually.
universe@677 107 *
universe@677 108 * @param c the collection
universe@677 109 * @param e the element
universe@677 110 */
universe@677 111 #define cx_invoke_simple_destructor(c, e) \
universe@854 112 (c)->base.simple_destructor((c)->base.store_pointer ? (*((void **) (e))) : (e))
universe@677 113
universe@677 114 /**
universe@677 115 * Invokes the advanced destructor function for a specific element.
universe@677 116 *
universe@677 117 * Usually only used by collection implementations. There should be no need
universe@677 118 * to invoke this macro manually.
universe@677 119 *
universe@677 120 * @param c the collection
universe@677 121 * @param e the element
universe@677 122 */
universe@677 123 #define cx_invoke_advanced_destructor(c, e) \
universe@854 124 (c)->base.advanced_destructor((c)->base.destructor_data, \
universe@854 125 (c)->base.store_pointer ? (*((void **) (e))) : (e))
universe@677 126
universe@677 127
universe@712 128 /**
universe@712 129 * Invokes all available destructor functions for a specific element.
universe@712 130 *
universe@712 131 * Usually only used by collection implementations. There should be no need
universe@712 132 * to invoke this macro manually.
universe@712 133 *
universe@712 134 * @param c the collection
universe@712 135 * @param e the element
universe@712 136 */
universe@677 137 #define cx_invoke_destructor(c, e) \
universe@854 138 if ((c)->base.simple_destructor) cx_invoke_simple_destructor(c,e); \
universe@854 139 if ((c)->base.advanced_destructor) cx_invoke_advanced_destructor(c,e)
universe@677 140
universe@677 141 #ifdef __cplusplus
universe@677 142 } // extern "C"
universe@677 143 #endif
universe@677 144
universe@677 145 #endif // UCX_COLLECTION_H

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