comparison: src/ucx/cx/collection.h
src/ucx/cx/collection.h
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| 1 /* | |
| 2 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS HEADER. | |
| 3 * | |
| 4 * Copyright 2023 Mike Becker, Olaf Wintermann All rights reserved. | |
| 5 * | |
| 6 * Redistribution and use in source and binary forms, with or without | |
| 7 * modification, are permitted provided that the following conditions are met: | |
| 8 * | |
| 9 * 1. Redistributions of source code must retain the above copyright | |
| 10 * notice, this list of conditions and the following disclaimer. | |
| 11 * | |
| 12 * 2. Redistributions in binary form must reproduce the above copyright | |
| 13 * notice, this list of conditions and the following disclaimer in the | |
| 14 * documentation and/or other materials provided with the distribution. | |
| 15 * | |
| 16 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" | |
| 17 * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE | |
| 18 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE | |
| 19 * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE | |
| 20 * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR | |
| 21 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF | |
| 22 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS | |
| 23 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN | |
| 24 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) | |
| 25 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE | |
| 26 * POSSIBILITY OF SUCH DAMAGE. | |
| 27 */ | |
| 28 /** | |
| 29 * \file collection.h | |
| 30 * \brief Common definitions for various collection implementations. | |
| 31 * \author Mike Becker | |
| 32 * \author Olaf Wintermann | |
| 33 * \version 3.0 | |
| 34 * \copyright 2-Clause BSD License | |
| 35 */ | |
| 36 | |
| 37 #ifndef UCX_COLLECTION_H | |
| 38 #define UCX_COLLECTION_H | |
| 39 | |
| 40 #include "allocator.h" | |
| 41 #include "iterator.h" | |
| 42 | |
| 43 #ifdef __cplusplus | |
| 44 extern "C" { | |
| 45 #endif | |
| 46 | |
| 47 /** | |
| 48 * Special constant used for creating collections that are storing pointers. | |
| 49 */ | |
| 50 #define CX_STORE_POINTERS 0 | |
| 51 | |
| 52 /** | |
| 53 * A comparator function comparing two collection elements. | |
| 54 */ | |
| 55 typedef int(*cx_compare_func)( | |
| 56 void const *left, | |
| 57 void const *right | |
| 58 ); | |
| 59 | |
| 60 /** | |
| 61 * Use this macro to declare common members for a collection structure. | |
| 62 */ | |
| 63 #define CX_COLLECTION_MEMBERS \ | |
| 64 /** \ | |
| 65 * The allocator to use. \ | |
| 66 */ \ | |
| 67 CxAllocator const *allocator; \ | |
| 68 /** \ | |
| 69 * The comparator function for the elements. \ | |
| 70 */ \ | |
| 71 cx_compare_func cmpfunc; \ | |
| 72 /** \ | |
| 73 * The size of each element. \ | |
| 74 */ \ | |
| 75 size_t item_size; \ | |
| 76 /** \ | |
| 77 * The number of currently stored elements. \ | |
| 78 */ \ | |
| 79 size_t size; \ | |
| 80 /** \ | |
| 81 * An optional simple destructor for the collection's elements. \ | |
| 82 * \ | |
| 83 * @attention Read the documentation of the particular collection implementation \ | |
| 84 * whether this destructor shall only destroy the contents or also free the memory. \ | |
| 85 */ \ | |
| 86 cx_destructor_func simple_destructor; \ | |
| 87 /** \ | |
| 88 * An optional advanced destructor for the collection's elements. \ | |
| 89 * \ | |
| 90 * @attention Read the documentation of the particular collection implementation \ | |
| 91 * whether this destructor shall only destroy the contents or also free the memory. \ | |
| 92 */ \ | |
| 93 cx_destructor_func2 advanced_destructor; \ | |
| 94 /** \ | |
| 95 * The pointer to additional data that is passed to the advanced destructor. \ | |
| 96 */ \ | |
| 97 void *destructor_data; \ | |
| 98 /** \ | |
| 99 * Indicates if this instance of a collection is supposed to store pointers \ | |
| 100 * instead of copies of the actual objects. \ | |
| 101 */ \ | |
| 102 bool store_pointer; | |
| 103 | |
| 104 /** | |
| 105 * Invokes the simple destructor function for a specific element. | |
| 106 * | |
| 107 * Usually only used by collection implementations. There should be no need | |
| 108 * to invoke this macro manually. | |
| 109 * | |
| 110 * @param c the collection | |
| 111 * @param e the element | |
| 112 */ | |
| 113 #define cx_invoke_simple_destructor(c, e) \ | |
| 114 (c)->simple_destructor((c)->store_pointer ? (*((void **) (e))) : (e)) | |
| 115 | |
| 116 /** | |
| 117 * Invokes the advanced destructor function for a specific element. | |
| 118 * | |
| 119 * Usually only used by collection implementations. There should be no need | |
| 120 * to invoke this macro manually. | |
| 121 * | |
| 122 * @param c the collection | |
| 123 * @param e the element | |
| 124 */ | |
| 125 #define cx_invoke_advanced_destructor(c, e) \ | |
| 126 (c)->advanced_destructor((c)->destructor_data, \ | |
| 127 (c)->store_pointer ? (*((void **) (e))) : (e)) | |
| 128 | |
| 129 | |
| 130 #define cx_invoke_destructor(c, e) \ | |
| 131 if ((c)->simple_destructor) cx_invoke_simple_destructor(c,e); \ | |
| 132 if ((c)->advanced_destructor) cx_invoke_advanced_destructor(c,e) | |
| 133 | |
| 134 #ifdef __cplusplus | |
| 135 } // extern "C" | |
| 136 #endif | |
| 137 | |
| 138 #endif // UCX_COLLECTION_H |
