src/cx/collection.h

Wed, 24 Jan 2024 22:19:05 +0100

author
Mike Becker <universe@uap-core.de>
date
Wed, 24 Jan 2024 22:19:05 +0100
changeset 817
949908c97474
parent 786
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child 854
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permissions
-rw-r--r--

add cx_array_default_reallocator

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1 /*
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2 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS HEADER.
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3 *
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4 * Copyright 2023 Mike Becker, Olaf Wintermann All rights reserved.
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5 *
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6 * Redistribution and use in source and binary forms, with or without
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7 * modification, are permitted provided that the following conditions are met:
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8 *
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9 * 1. Redistributions of source code must retain the above copyright
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10 * notice, this list of conditions and the following disclaimer.
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11 *
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12 * 2. Redistributions in binary form must reproduce the above copyright
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13 * notice, this list of conditions and the following disclaimer in the
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14 * documentation and/or other materials provided with the distribution.
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15 *
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16 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
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17 * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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18 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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19 * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE
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20 * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
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21 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
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22 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
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23 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
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24 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
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25 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
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26 * POSSIBILITY OF SUCH DAMAGE.
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27 */
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28 /**
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29 * \file collection.h
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30 * \brief Common definitions for various collection implementations.
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31 * \author Mike Becker
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32 * \author Olaf Wintermann
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33 * \copyright 2-Clause BSD License
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34 */
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35
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36 #ifndef UCX_COLLECTION_H
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37 #define UCX_COLLECTION_H
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38
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39 #include "allocator.h"
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40 #include "iterator.h"
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41
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42 #ifdef __cplusplus
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43 extern "C" {
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44 #endif
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45
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46 /**
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47 * Special constant used for creating collections that are storing pointers.
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48 */
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49 #define CX_STORE_POINTERS 0
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50
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51 #ifndef CX_COMPARE_FUNC_DEFINED
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52 #define CX_COMPARE_FUNC_DEFINED
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53 /**
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54 * A comparator function comparing two collection elements.
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55 */
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56 typedef int(*cx_compare_func)(
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57 void const *left,
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58 void const *right
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59 );
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60 #endif // CX_COMPARE_FUNC_DEFINED
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61
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62 /**
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63 * Use this macro to declare common members for a collection structure.
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64 */
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65 #define CX_COLLECTION_MEMBERS \
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66 /** \
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67 * The allocator to use. \
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68 */ \
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69 CxAllocator const *allocator; \
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70 /** \
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71 * The comparator function for the elements. \
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72 */ \
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73 cx_compare_func cmpfunc; \
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74 /** \
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75 * The size of each element. \
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76 */ \
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77 size_t item_size; \
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78 /** \
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79 * The number of currently stored elements. \
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80 */ \
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81 size_t size; \
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82 /** \
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83 * An optional simple destructor for the collection's elements. \
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84 * \
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85 * @attention Read the documentation of the particular collection implementation \
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86 * whether this destructor shall only destroy the contents or also free the memory. \
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87 */ \
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88 cx_destructor_func simple_destructor; \
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89 /** \
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90 * An optional advanced destructor for the collection's elements. \
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91 * \
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92 * @attention Read the documentation of the particular collection implementation \
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93 * whether this destructor shall only destroy the contents or also free the memory. \
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94 */ \
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95 cx_destructor_func2 advanced_destructor; \
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96 /** \
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97 * The pointer to additional data that is passed to the advanced destructor. \
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98 */ \
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99 void *destructor_data; \
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100 /** \
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101 * Indicates if this instance of a collection is supposed to store pointers \
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102 * instead of copies of the actual objects. \
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103 */ \
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104 bool store_pointer;
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105
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106 /**
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107 * Invokes the simple destructor function for a specific element.
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108 *
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109 * Usually only used by collection implementations. There should be no need
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110 * to invoke this macro manually.
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111 *
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112 * @param c the collection
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113 * @param e the element
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114 */
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115 #define cx_invoke_simple_destructor(c, e) \
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116 (c)->simple_destructor((c)->store_pointer ? (*((void **) (e))) : (e))
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117
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118 /**
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119 * Invokes the advanced destructor function for a specific element.
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120 *
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121 * Usually only used by collection implementations. There should be no need
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122 * to invoke this macro manually.
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123 *
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124 * @param c the collection
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125 * @param e the element
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126 */
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127 #define cx_invoke_advanced_destructor(c, e) \
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128 (c)->advanced_destructor((c)->destructor_data, \
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129 (c)->store_pointer ? (*((void **) (e))) : (e))
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130
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131
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132 /**
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133 * Invokes all available destructor functions for a specific element.
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134 *
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135 * Usually only used by collection implementations. There should be no need
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136 * to invoke this macro manually.
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137 *
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138 * @param c the collection
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139 * @param e the element
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140 */
677
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141 #define cx_invoke_destructor(c, e) \
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142 if ((c)->simple_destructor) cx_invoke_simple_destructor(c,e); \
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143 if ((c)->advanced_destructor) cx_invoke_advanced_destructor(c,e)
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144
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145 #ifdef __cplusplus
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146 } // extern "C"
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147 #endif
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148
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149 #endif // UCX_COLLECTION_H

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