src/ucx/linked_list.c

Sun, 11 Jun 2023 15:53:55 +0200

author
Olaf Wintermann <olaf.wintermann@gmail.com>
date
Sun, 11 Jun 2023 15:53:55 +0200
changeset 502
11ac3761c0e3
parent 491
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child 504
c094afcdfb27
permissions
-rw-r--r--

fix non-blocking CGI handler and non-blocking SSL-IO

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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 2021 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 #include "cx/linked_list.h"
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30 #include "cx/utils.h"
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31 #include <string.h>
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32 #include <assert.h>
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33
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34 // LOW LEVEL LINKED LIST FUNCTIONS
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35
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36 #define CX_LL_PTR(cur, off) (*(void**)(((char*)(cur))+(off)))
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37 #define ll_prev(node) CX_LL_PTR(node, loc_prev)
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38 #define ll_next(node) CX_LL_PTR(node, loc_next)
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39 #define ll_advance(node) CX_LL_PTR(node, loc_advance)
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40 #define ll_data(node) (((char*)(node))+loc_data)
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41
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42 void *cx_linked_list_at(
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43 void const *start,
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44 size_t start_index,
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45 ptrdiff_t loc_advance,
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46 size_t index
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47 ) {
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48 assert(start != NULL);
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49 assert(loc_advance >= 0);
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50 size_t i = start_index;
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51 void const *cur = start;
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52 while (i != index && cur != NULL) {
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53 cur = ll_advance(cur);
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54 i < index ? i++ : i--;
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55 }
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56 return (void *) cur;
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57 }
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58
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59 ssize_t cx_linked_list_find(
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60 void const *start,
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61 ptrdiff_t loc_advance,
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62 ptrdiff_t loc_data,
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63 cx_compare_func cmp_func,
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64 void const *elem
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65 ) {
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66 assert(start != NULL);
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67 assert(loc_advance >= 0);
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68 assert(loc_data >= 0);
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69 assert(cmp_func);
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70
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71 void const *node = start;
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72 ssize_t index = 0;
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73 do {
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74 void *current = ll_data(node);
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75 if (cmp_func(current, elem) == 0) {
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76 return index;
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77 }
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78 node = ll_advance(node);
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79 index++;
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80 } while (node != NULL);
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81 return -1;
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82 }
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83
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84 void *cx_linked_list_first(
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85 void const *node,
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86 ptrdiff_t loc_prev
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87 ) {
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88 return cx_linked_list_last(node, loc_prev);
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89 }
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90
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91 void *cx_linked_list_last(
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92 void const *node,
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93 ptrdiff_t loc_next
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94 ) {
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95 assert(node != NULL);
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96 assert(loc_next >= 0);
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97
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98 void const *cur = node;
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99 void const *last;
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100 do {
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101 last = cur;
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102 } while ((cur = ll_next(cur)) != NULL);
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103
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104 return (void *) last;
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105 }
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106
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107 void *cx_linked_list_prev(
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108 void const *begin,
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109 ptrdiff_t loc_next,
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110 void const *node
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111 ) {
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112 assert(begin != NULL);
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113 assert(node != NULL);
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114 assert(loc_next >= 0);
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115 if (begin == node) return NULL;
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116 void const *cur = begin;
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117 void const *next;
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118 while (1) {
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119 next = ll_next(cur);
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120 if (next == node) return (void *) cur;
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121 cur = next;
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122 }
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123 }
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124
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125 void cx_linked_list_link(
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126 void *left,
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127 void *right,
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128 ptrdiff_t loc_prev,
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129 ptrdiff_t loc_next
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130 ) {
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131 assert(loc_next >= 0);
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132 ll_next(left) = right;
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133 if (loc_prev >= 0) {
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134 ll_prev(right) = left;
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135 }
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136 }
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137
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138 void cx_linked_list_unlink(
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139 void *left,
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140 void *right,
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141 ptrdiff_t loc_prev,
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142 ptrdiff_t loc_next
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143 ) {
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144 assert (loc_next >= 0);
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145 assert(ll_next(left) == right);
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146 ll_next(left) = NULL;
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147 if (loc_prev >= 0) {
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148 assert(ll_prev(right) == left);
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149 ll_prev(right) = NULL;
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150 }
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151 }
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152
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153 void cx_linked_list_add(
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154 void **begin,
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155 void **end,
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156 ptrdiff_t loc_prev,
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157 ptrdiff_t loc_next,
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158 void *new_node
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159 ) {
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160 void *last;
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161 if (end == NULL) {
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162 assert(begin != NULL);
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163 last = *begin == NULL ? NULL : cx_linked_list_last(*begin, loc_next);
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164 } else {
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165 last = *end;
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166 }
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167 cx_linked_list_insert_chain(begin, end, loc_prev, loc_next, last, new_node, new_node);
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168 }
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169
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170 void cx_linked_list_prepend(
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171 void **begin,
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172 void **end,
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173 ptrdiff_t loc_prev,
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174 ptrdiff_t loc_next,
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175 void *new_node
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176 ) {
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177 cx_linked_list_insert_chain(begin, end, loc_prev, loc_next, NULL, new_node, new_node);
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178 }
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179
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180 void cx_linked_list_insert(
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181 void **begin,
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182 void **end,
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183 ptrdiff_t loc_prev,
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184 ptrdiff_t loc_next,
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185 void *node,
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186 void *new_node
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187 ) {
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188 cx_linked_list_insert_chain(begin, end, loc_prev, loc_next, node, new_node, new_node);
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189 }
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190
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191 void cx_linked_list_insert_chain(
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192 void **begin,
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193 void **end,
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194 ptrdiff_t loc_prev,
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195 ptrdiff_t loc_next,
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196 void *node,
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197 void *insert_begin,
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198 void *insert_end
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199 ) {
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200 // find the end of the chain, if not specified
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201 if (insert_end == NULL) {
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202 insert_end = cx_linked_list_last(insert_begin, loc_next);
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203 }
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204
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205 // determine the successor
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206 void *successor;
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207 if (node == NULL) {
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208 assert(begin != NULL || (end != NULL && loc_prev >= 0));
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209 if (begin != NULL) {
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210 successor = *begin;
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211 *begin = insert_begin;
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212 } else {
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213 successor = *end == NULL ? NULL : cx_linked_list_first(*end, loc_prev);
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214 }
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215 } else {
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216 successor = ll_next(node);
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217 cx_linked_list_link(node, insert_begin, loc_prev, loc_next);
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218 }
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219
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220 if (successor == NULL) {
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221 // the list ends with the new chain
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222 if (end != NULL) {
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223 *end = insert_end;
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224 }
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225 } else {
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226 cx_linked_list_link(insert_end, successor, loc_prev, loc_next);
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227 }
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228 }
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229
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230 void cx_linked_list_remove(
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231 void **begin,
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232 void **end,
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233 ptrdiff_t loc_prev,
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234 ptrdiff_t loc_next,
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235 void *node
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236 ) {
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237 assert(node != NULL);
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238 assert(loc_next >= 0);
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239 assert(loc_prev >= 0 || begin != NULL);
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240
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241 // find adjacent nodes
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242 void *next = ll_next(node);
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243 void *prev;
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244 if (loc_prev >= 0) {
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245 prev = ll_prev(node);
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246 } else {
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247 prev = cx_linked_list_prev(*begin, loc_next, node);
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248 }
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249
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250 // update next pointer of prev node, or set begin
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251 if (prev == NULL) {
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252 if (begin != NULL) {
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253 *begin = next;
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254 }
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255 } else {
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256 ll_next(prev) = next;
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257 }
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258
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259 // update prev pointer of next node, or set end
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260 if (next == NULL) {
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261 if (end != NULL) {
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262 *end = prev;
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263 }
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264 } else if (loc_prev >= 0) {
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265 ll_prev(next) = prev;
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266 }
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267 }
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268
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269 size_t cx_linked_list_size(
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270 void const *node,
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271 ptrdiff_t loc_next
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272 ) {
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273 assert(loc_next >= 0);
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274 size_t size = 0;
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275 while (node != NULL) {
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276 node = ll_next(node);
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277 size++;
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278 }
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279 return size;
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280 }
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281
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282 #ifndef CX_LINKED_LIST_SORT_SBO_SIZE
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283 #define CX_LINKED_LIST_SORT_SBO_SIZE 1024
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284 #endif
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285
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286 static void *cx_linked_list_sort_merge(
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287 ptrdiff_t loc_prev,
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288 ptrdiff_t loc_next,
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289 ptrdiff_t loc_data,
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290 size_t length,
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291 void *ls,
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292 void *le,
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293 void *re,
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294 cx_compare_func cmp_func
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295 ) {
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296 void *sbo[CX_LINKED_LIST_SORT_SBO_SIZE];
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297 void **sorted = length >= CX_LINKED_LIST_SORT_SBO_SIZE ?
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298 malloc(sizeof(void *) * length) : sbo;
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299 if (sorted == NULL) abort();
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300 void *rc, *lc;
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301
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302 lc = ls;
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303 rc = le;
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304 size_t n = 0;
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305 while (lc && lc != le && rc != re) {
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306 if (cmp_func(ll_data(lc), ll_data(rc)) <= 0) {
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307 sorted[n] = lc;
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308 lc = ll_next(lc);
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309 } else {
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310 sorted[n] = rc;
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311 rc = ll_next(rc);
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312 }
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313 n++;
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314 }
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315 while (lc && lc != le) {
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316 sorted[n] = lc;
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317 lc = ll_next(lc);
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318 n++;
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319 }
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320 while (rc && rc != re) {
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321 sorted[n] = rc;
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322 rc = ll_next(rc);
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323 n++;
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324 }
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325
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326 // Update pointer
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327 if (loc_prev >= 0) ll_prev(sorted[0]) = NULL;
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328 cx_for_n (i, length - 1) {
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329 cx_linked_list_link(sorted[i], sorted[i + 1], loc_prev, loc_next);
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330 }
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331 ll_next(sorted[length - 1]) = NULL;
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332
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333 void *ret = sorted[0];
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334 if (sorted != sbo) {
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335 free(sorted);
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336 }
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337 return ret;
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338 }
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339
438
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340 void cx_linked_list_sort( // NOLINT(misc-no-recursion) - purposely recursive function
415
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341 void **begin,
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342 void **end,
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343 ptrdiff_t loc_prev,
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344 ptrdiff_t loc_next,
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345 ptrdiff_t loc_data,
490
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346 cx_compare_func cmp_func
415
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347 ) {
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348 assert(begin != NULL);
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349 assert(loc_next >= 0);
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350 assert(loc_data >= 0);
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351 assert(cmp_func);
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352
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353 void *lc, *ls, *le, *re;
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354
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355 // set start node
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356 ls = *begin;
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357
491
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diff changeset
358 // early exit when this list is empty
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359 if (ls == NULL) return;
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360
415
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361 // check how many elements are already sorted
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362 lc = ls;
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363 size_t ln = 1;
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364 while (ll_next(lc) != NULL && cmp_func(ll_data(ll_next(lc)), ll_data(lc)) > 0) {
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365 lc = ll_next(lc);
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366 ln++;
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367 }
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368 le = ll_next(lc);
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369
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370 // if first unsorted node is NULL, the list is already completely sorted
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371 if (le != NULL) {
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372 void *rc;
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373 size_t rn = 1;
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374 rc = le;
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375 // skip already sorted elements
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376 while (ll_next(rc) != NULL && cmp_func(ll_data(ll_next(rc)), ll_data(rc)) > 0) {
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377 rc = ll_next(rc);
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378 rn++;
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379 }
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380 re = ll_next(rc);
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381
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382 // {ls,...,le->prev} and {rs,...,re->prev} are sorted - merge them
490
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diff changeset
383 void *sorted = cx_linked_list_sort_merge(loc_prev, loc_next, loc_data,
415
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384 ln + rn, ls, le, re, cmp_func);
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385
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386 // Something left? Sort it!
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387 size_t remainder_length = cx_linked_list_size(re, loc_next);
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388 if (remainder_length > 0) {
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389 void *remainder = re;
490
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diff changeset
390 cx_linked_list_sort(&remainder, NULL, loc_prev, loc_next, loc_data, cmp_func);
415
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391
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392 // merge sorted list with (also sorted) remainder
490
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diff changeset
393 *begin = cx_linked_list_sort_merge(loc_prev, loc_next, loc_data,
415
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394 ln + rn + remainder_length,
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395 sorted, remainder, NULL, cmp_func);
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396 } else {
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397 // no remainder - we've got our sorted list
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398 *begin = sorted;
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399 }
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400 if (end) *end = cx_linked_list_last(sorted, loc_next);
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401 }
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parents:
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402 }
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parents:
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403
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parents:
diff changeset
404 int cx_linked_list_compare(
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parents:
diff changeset
405 void const *begin_left,
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parents:
diff changeset
406 void const *begin_right,
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parents:
diff changeset
407 ptrdiff_t loc_advance,
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parents:
diff changeset
408 ptrdiff_t loc_data,
490
d218607f5a7e update ucx
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parents: 438
diff changeset
409 cx_compare_func cmp_func
415
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parents:
diff changeset
410 ) {
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parents:
diff changeset
411 void const *left = begin_left, *right = begin_right;
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parents:
diff changeset
412
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parents:
diff changeset
413 while (left != NULL && right != NULL) {
490
d218607f5a7e update ucx
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parents: 438
diff changeset
414 void const *left_data = ll_data(left);
d218607f5a7e update ucx
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parents: 438
diff changeset
415 void const *right_data = ll_data(right);
415
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parents:
diff changeset
416 int result = cmp_func(left_data, right_data);
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parents:
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417 if (result != 0) return result;
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parents:
diff changeset
418 left = ll_advance(left);
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parents:
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419 right = ll_advance(right);
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parents:
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420 }
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parents:
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421
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parents:
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422 if (left != NULL) { return 1; }
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parents:
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423 else if (right != NULL) { return -1; }
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parents:
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424 else { return 0; }
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parents:
diff changeset
425 }
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parents:
diff changeset
426
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parents:
diff changeset
427 void cx_linked_list_reverse(
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parents:
diff changeset
428 void **begin,
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parents:
diff changeset
429 void **end,
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parents:
diff changeset
430 ptrdiff_t loc_prev,
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parents:
diff changeset
431 ptrdiff_t loc_next
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parents:
diff changeset
432 ) {
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parents:
diff changeset
433 assert(begin != NULL);
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parents:
diff changeset
434 assert(loc_next >= 0);
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parents:
diff changeset
435
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parents:
diff changeset
436 // swap all links
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parents:
diff changeset
437 void *prev = NULL;
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parents:
diff changeset
438 void *cur = *begin;
d938228c382e switch from ucx 2 to 3
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parents:
diff changeset
439 while (cur != NULL) {
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parents:
diff changeset
440 void *next = ll_next(cur);
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parents:
diff changeset
441
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parents:
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442 ll_next(cur) = prev;
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parents:
diff changeset
443 if (loc_prev >= 0) {
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parents:
diff changeset
444 ll_prev(cur) = next;
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parents:
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445 }
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parents:
diff changeset
446
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parents:
diff changeset
447 prev = cur;
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parents:
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448 cur = next;
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parents:
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449 }
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parents:
diff changeset
450
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parents:
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451 // update begin and end
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parents:
diff changeset
452 if (end != NULL) {
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parents:
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453 *end = *begin;
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parents:
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454 }
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parents:
diff changeset
455 *begin = prev;
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parents:
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456 }
d938228c382e switch from ucx 2 to 3
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parents:
diff changeset
457
438
22eca559aded refactore http listener creation
Olaf Wintermann <olaf.wintermann@gmail.com>
parents: 415
diff changeset
458 // HIGH LEVEL LINKED LIST IMPLEMENTATION
415
d938228c382e switch from ucx 2 to 3
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parents:
diff changeset
459
490
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diff changeset
460 bool CX_DISABLE_LINKED_LIST_SWAP_SBO = false;
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diff changeset
461
415
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diff changeset
462 typedef struct cx_linked_list_node cx_linked_list_node;
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diff changeset
463 struct cx_linked_list_node {
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464 cx_linked_list_node *prev;
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465 cx_linked_list_node *next;
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466 char payload[];
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467 };
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468
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diff changeset
469 #define CX_LL_LOC_PREV offsetof(cx_linked_list_node, prev)
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470 #define CX_LL_LOC_NEXT offsetof(cx_linked_list_node, next)
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471 #define CX_LL_LOC_DATA offsetof(cx_linked_list_node, payload)
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parents:
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472
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473 typedef struct {
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474 struct cx_list_s base;
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475 cx_linked_list_node *begin;
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parents:
diff changeset
476 cx_linked_list_node *end;
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parents:
diff changeset
477 } cx_linked_list;
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parents:
diff changeset
478
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diff changeset
479 static cx_linked_list_node *cx_ll_node_at(
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diff changeset
480 cx_linked_list const *list,
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diff changeset
481 size_t index
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482 ) {
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483 if (index >= list->base.size) {
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484 return NULL;
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485 } else if (index > list->base.size / 2) {
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486 return cx_linked_list_at(list->end, list->base.size - 1, CX_LL_LOC_PREV, index);
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487 } else {
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488 return cx_linked_list_at(list->begin, 0, CX_LL_LOC_NEXT, index);
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489 }
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490 }
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491
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492 static int cx_ll_insert_at(
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493 struct cx_list_s *list,
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494 cx_linked_list_node *node,
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495 void const *elem
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496 ) {
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497
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498 // create the new new_node
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diff changeset
499 cx_linked_list_node *new_node = cxMalloc(list->allocator,
490
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diff changeset
500 sizeof(cx_linked_list_node) + list->item_size);
415
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501
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parents:
diff changeset
502 // sortir if failed
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parents:
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503 if (new_node == NULL) return 1;
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parents:
diff changeset
504
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505 // initialize new new_node
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diff changeset
506 new_node->prev = new_node->next = NULL;
490
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diff changeset
507 memcpy(new_node->payload, elem, list->item_size);
415
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508
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parents:
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509 // insert
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diff changeset
510 cx_linked_list *ll = (cx_linked_list *) list;
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511 cx_linked_list_insert_chain(
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diff changeset
512 (void **) &ll->begin, (void **) &ll->end,
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513 CX_LL_LOC_PREV, CX_LL_LOC_NEXT,
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514 node, new_node, new_node
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parents:
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515 );
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parents:
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516
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parents:
diff changeset
517 // increase the size and return
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518 list->size++;
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519 return 0;
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520 }
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parents:
diff changeset
521
490
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parents: 438
diff changeset
522 static size_t cx_ll_insert_array(
415
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parents:
diff changeset
523 struct cx_list_s *list,
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parents:
diff changeset
524 size_t index,
490
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diff changeset
525 void const *array,
d218607f5a7e update ucx
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diff changeset
526 size_t n
415
d938228c382e switch from ucx 2 to 3
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diff changeset
527 ) {
490
d218607f5a7e update ucx
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diff changeset
528 // out-of bounds and corner case check
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diff changeset
529 if (index > list->size || n == 0) return 0;
415
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parents:
diff changeset
530
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parents:
diff changeset
531 // find position efficiently
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parents:
diff changeset
532 cx_linked_list_node *node = index == 0 ? NULL : cx_ll_node_at((cx_linked_list *) list, index - 1);
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parents:
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533
490
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parents: 438
diff changeset
534 // perform first insert
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parents: 438
diff changeset
535 if (0 != cx_ll_insert_at(list, node, array)) {
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parents: 438
diff changeset
536 return 1;
d218607f5a7e update ucx
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parents: 438
diff changeset
537 }
d218607f5a7e update ucx
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parents: 438
diff changeset
538
d218607f5a7e update ucx
Olaf Wintermann <olaf.wintermann@gmail.com>
parents: 438
diff changeset
539 // is there more?
d218607f5a7e update ucx
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parents: 438
diff changeset
540 if (n == 1) return 1;
415
d938228c382e switch from ucx 2 to 3
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parents:
diff changeset
541
490
d218607f5a7e update ucx
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parents: 438
diff changeset
542 // we now know exactly where we are
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parents: 438
diff changeset
543 node = node == NULL ? ((cx_linked_list *) list)->begin : node->next;
415
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parents:
diff changeset
544
490
d218607f5a7e update ucx
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parents: 438
diff changeset
545 // we can add the remaining nodes and immedately advance to the inserted node
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parents: 438
diff changeset
546 char const *source = array;
d218607f5a7e update ucx
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parents: 438
diff changeset
547 for (size_t i = 1; i < n; i++) {
d218607f5a7e update ucx
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parents: 438
diff changeset
548 source += list->item_size;
d218607f5a7e update ucx
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parents: 438
diff changeset
549 if (0 != cx_ll_insert_at(list, node, source)) {
438
22eca559aded refactore http listener creation
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parents: 415
diff changeset
550 return i;
22eca559aded refactore http listener creation
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diff changeset
551 }
490
d218607f5a7e update ucx
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parents: 438
diff changeset
552 node = node->next;
438
22eca559aded refactore http listener creation
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parents: 415
diff changeset
553 }
22eca559aded refactore http listener creation
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parents: 415
diff changeset
554 return n;
22eca559aded refactore http listener creation
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parents: 415
diff changeset
555 }
22eca559aded refactore http listener creation
Olaf Wintermann <olaf.wintermann@gmail.com>
parents: 415
diff changeset
556
490
d218607f5a7e update ucx
Olaf Wintermann <olaf.wintermann@gmail.com>
parents: 438
diff changeset
557 static int cx_ll_insert_element(
415
d938228c382e switch from ucx 2 to 3
Olaf Wintermann <olaf.wintermann@gmail.com>
parents:
diff changeset
558 struct cx_list_s *list,
d938228c382e switch from ucx 2 to 3
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parents:
diff changeset
559 size_t index,
490
d218607f5a7e update ucx
Olaf Wintermann <olaf.wintermann@gmail.com>
parents: 438
diff changeset
560 void const *element
415
d938228c382e switch from ucx 2 to 3
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parents:
diff changeset
561 ) {
490
d218607f5a7e update ucx
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parents: 438
diff changeset
562 return 1 != cx_ll_insert_array(list, index, element, 1);
415
d938228c382e switch from ucx 2 to 3
Olaf Wintermann <olaf.wintermann@gmail.com>
parents:
diff changeset
563 }
d938228c382e switch from ucx 2 to 3
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parents:
diff changeset
564
d938228c382e switch from ucx 2 to 3
Olaf Wintermann <olaf.wintermann@gmail.com>
parents:
diff changeset
565 static int cx_ll_remove(
d938228c382e switch from ucx 2 to 3
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parents:
diff changeset
566 struct cx_list_s *list,
d938228c382e switch from ucx 2 to 3
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parents:
diff changeset
567 size_t index
d938228c382e switch from ucx 2 to 3
Olaf Wintermann <olaf.wintermann@gmail.com>
parents:
diff changeset
568 ) {
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Olaf Wintermann <olaf.wintermann@gmail.com>
parents:
diff changeset
569 cx_linked_list *ll = (cx_linked_list *) list;
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Olaf Wintermann <olaf.wintermann@gmail.com>
parents:
diff changeset
570 cx_linked_list_node *node = cx_ll_node_at(ll, index);
d938228c382e switch from ucx 2 to 3
Olaf Wintermann <olaf.wintermann@gmail.com>
parents:
diff changeset
571
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parents:
diff changeset
572 // out-of-bounds check
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parents:
diff changeset
573 if (node == NULL) return 1;
d938228c382e switch from ucx 2 to 3
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parents:
diff changeset
574
490
d218607f5a7e update ucx
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parents: 438
diff changeset
575 // element destruction
d218607f5a7e update ucx
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parents: 438
diff changeset
576 cx_invoke_destructor(list, node->payload);
d218607f5a7e update ucx
Olaf Wintermann <olaf.wintermann@gmail.com>
parents: 438
diff changeset
577
415
d938228c382e switch from ucx 2 to 3
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parents:
diff changeset
578 // remove
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parents:
diff changeset
579 cx_linked_list_remove((void **) &ll->begin, (void **) &ll->end,
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parents:
diff changeset
580 CX_LL_LOC_PREV, CX_LL_LOC_NEXT, node);
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parents:
diff changeset
581
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parents:
diff changeset
582 // adjust size
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parents:
diff changeset
583 list->size--;
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parents:
diff changeset
584
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parents:
diff changeset
585 // free and return
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Olaf Wintermann <olaf.wintermann@gmail.com>
parents:
diff changeset
586 cxFree(list->allocator, node);
d938228c382e switch from ucx 2 to 3
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parents:
diff changeset
587
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parents:
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588 return 0;
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parents:
diff changeset
589 }
d938228c382e switch from ucx 2 to 3
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parents:
diff changeset
590
490
d218607f5a7e update ucx
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parents: 438
diff changeset
591 static void cx_ll_clear(struct cx_list_s *list) {
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parents: 438
diff changeset
592 if (list->size == 0) return;
d218607f5a7e update ucx
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parents: 438
diff changeset
593
d218607f5a7e update ucx
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parents: 438
diff changeset
594 cx_linked_list *ll = (cx_linked_list *) list;
d218607f5a7e update ucx
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parents: 438
diff changeset
595 cx_linked_list_node *node = ll->begin;
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Olaf Wintermann <olaf.wintermann@gmail.com>
parents: 438
diff changeset
596 while (node != NULL) {
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parents: 438
diff changeset
597 cx_invoke_destructor(list, node->payload);
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parents: 438
diff changeset
598 cx_linked_list_node *next = node->next;
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parents: 438
diff changeset
599 cxFree(list->allocator, node);
d218607f5a7e update ucx
Olaf Wintermann <olaf.wintermann@gmail.com>
parents: 438
diff changeset
600 node = next;
d218607f5a7e update ucx
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parents: 438
diff changeset
601 }
d218607f5a7e update ucx
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parents: 438
diff changeset
602 ll->begin = ll->end = NULL;
d218607f5a7e update ucx
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parents: 438
diff changeset
603 list->size = 0;
d218607f5a7e update ucx
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parents: 438
diff changeset
604 }
d218607f5a7e update ucx
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parents: 438
diff changeset
605
d218607f5a7e update ucx
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parents: 438
diff changeset
606 #ifndef CX_LINKED_LIST_SWAP_SBO_SIZE
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parents: 438
diff changeset
607 #define CX_LINKED_LIST_SWAP_SBO_SIZE 16
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parents: 438
diff changeset
608 #endif
d218607f5a7e update ucx
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parents: 438
diff changeset
609
d218607f5a7e update ucx
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parents: 438
diff changeset
610 static int cx_ll_swap(
d218607f5a7e update ucx
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parents: 438
diff changeset
611 struct cx_list_s *list,
d218607f5a7e update ucx
Olaf Wintermann <olaf.wintermann@gmail.com>
parents: 438
diff changeset
612 size_t i,
d218607f5a7e update ucx
Olaf Wintermann <olaf.wintermann@gmail.com>
parents: 438
diff changeset
613 size_t j
d218607f5a7e update ucx
Olaf Wintermann <olaf.wintermann@gmail.com>
parents: 438
diff changeset
614 ) {
d218607f5a7e update ucx
Olaf Wintermann <olaf.wintermann@gmail.com>
parents: 438
diff changeset
615 if (i >= list->size || j >= list->size) return 1;
d218607f5a7e update ucx
Olaf Wintermann <olaf.wintermann@gmail.com>
parents: 438
diff changeset
616 if (i == j) return 0;
d218607f5a7e update ucx
Olaf Wintermann <olaf.wintermann@gmail.com>
parents: 438
diff changeset
617
d218607f5a7e update ucx
Olaf Wintermann <olaf.wintermann@gmail.com>
parents: 438
diff changeset
618 // perform an optimized search that finds both elements in one run
d218607f5a7e update ucx
Olaf Wintermann <olaf.wintermann@gmail.com>
parents: 438
diff changeset
619 cx_linked_list *ll = (cx_linked_list *) list;
d218607f5a7e update ucx
Olaf Wintermann <olaf.wintermann@gmail.com>
parents: 438
diff changeset
620 size_t mid = list->size / 2;
d218607f5a7e update ucx
Olaf Wintermann <olaf.wintermann@gmail.com>
parents: 438
diff changeset
621 size_t left, right;
d218607f5a7e update ucx
Olaf Wintermann <olaf.wintermann@gmail.com>
parents: 438
diff changeset
622 if (i < j) {
d218607f5a7e update ucx
Olaf Wintermann <olaf.wintermann@gmail.com>
parents: 438
diff changeset
623 left = i;
d218607f5a7e update ucx
Olaf Wintermann <olaf.wintermann@gmail.com>
parents: 438
diff changeset
624 right = j;
d218607f5a7e update ucx
Olaf Wintermann <olaf.wintermann@gmail.com>
parents: 438
diff changeset
625 } else {
d218607f5a7e update ucx
Olaf Wintermann <olaf.wintermann@gmail.com>
parents: 438
diff changeset
626 left = j;
d218607f5a7e update ucx
Olaf Wintermann <olaf.wintermann@gmail.com>
parents: 438
diff changeset
627 right = i;
d218607f5a7e update ucx
Olaf Wintermann <olaf.wintermann@gmail.com>
parents: 438
diff changeset
628 }
d218607f5a7e update ucx
Olaf Wintermann <olaf.wintermann@gmail.com>
parents: 438
diff changeset
629 cx_linked_list_node *nleft, *nright;
d218607f5a7e update ucx
Olaf Wintermann <olaf.wintermann@gmail.com>
parents: 438
diff changeset
630 if (left < mid && right < mid) {
d218607f5a7e update ucx
Olaf Wintermann <olaf.wintermann@gmail.com>
parents: 438
diff changeset
631 // case 1: both items left from mid
d218607f5a7e update ucx
Olaf Wintermann <olaf.wintermann@gmail.com>
parents: 438
diff changeset
632 nleft = cx_ll_node_at(ll, left);
d218607f5a7e update ucx
Olaf Wintermann <olaf.wintermann@gmail.com>
parents: 438
diff changeset
633 nright = nleft;
d218607f5a7e update ucx
Olaf Wintermann <olaf.wintermann@gmail.com>
parents: 438
diff changeset
634 for (size_t c = left; c < right; c++) {
d218607f5a7e update ucx
Olaf Wintermann <olaf.wintermann@gmail.com>
parents: 438
diff changeset
635 nright = nright->next;
d218607f5a7e update ucx
Olaf Wintermann <olaf.wintermann@gmail.com>
parents: 438
diff changeset
636 }
d218607f5a7e update ucx
Olaf Wintermann <olaf.wintermann@gmail.com>
parents: 438
diff changeset
637 } else if (left >= mid && right >= mid) {
d218607f5a7e update ucx
Olaf Wintermann <olaf.wintermann@gmail.com>
parents: 438
diff changeset
638 // case 2: both items right from mid
d218607f5a7e update ucx
Olaf Wintermann <olaf.wintermann@gmail.com>
parents: 438
diff changeset
639 nright = cx_ll_node_at(ll, right);
d218607f5a7e update ucx
Olaf Wintermann <olaf.wintermann@gmail.com>
parents: 438
diff changeset
640 nleft = nright;
d218607f5a7e update ucx
Olaf Wintermann <olaf.wintermann@gmail.com>
parents: 438
diff changeset
641 for (size_t c = right; c > left; c--) {
d218607f5a7e update ucx
Olaf Wintermann <olaf.wintermann@gmail.com>
parents: 438
diff changeset
642 nleft = nleft->prev;
d218607f5a7e update ucx
Olaf Wintermann <olaf.wintermann@gmail.com>
parents: 438
diff changeset
643 }
d218607f5a7e update ucx
Olaf Wintermann <olaf.wintermann@gmail.com>
parents: 438
diff changeset
644 } else {
d218607f5a7e update ucx
Olaf Wintermann <olaf.wintermann@gmail.com>
parents: 438
diff changeset
645 // case 3: one item left, one item right
d218607f5a7e update ucx
Olaf Wintermann <olaf.wintermann@gmail.com>
parents: 438
diff changeset
646
d218607f5a7e update ucx
Olaf Wintermann <olaf.wintermann@gmail.com>
parents: 438
diff changeset
647 // chose the closest to begin / end
d218607f5a7e update ucx
Olaf Wintermann <olaf.wintermann@gmail.com>
parents: 438
diff changeset
648 size_t closest;
d218607f5a7e update ucx
Olaf Wintermann <olaf.wintermann@gmail.com>
parents: 438
diff changeset
649 size_t other;
d218607f5a7e update ucx
Olaf Wintermann <olaf.wintermann@gmail.com>
parents: 438
diff changeset
650 size_t diff2boundary = list->size - right - 1;
d218607f5a7e update ucx
Olaf Wintermann <olaf.wintermann@gmail.com>
parents: 438
diff changeset
651 if (left <= diff2boundary) {
d218607f5a7e update ucx
Olaf Wintermann <olaf.wintermann@gmail.com>
parents: 438
diff changeset
652 closest = left;
d218607f5a7e update ucx
Olaf Wintermann <olaf.wintermann@gmail.com>
parents: 438
diff changeset
653 other = right;
d218607f5a7e update ucx
Olaf Wintermann <olaf.wintermann@gmail.com>
parents: 438
diff changeset
654 nleft = cx_ll_node_at(ll, left);
d218607f5a7e update ucx
Olaf Wintermann <olaf.wintermann@gmail.com>
parents: 438
diff changeset
655 } else {
d218607f5a7e update ucx
Olaf Wintermann <olaf.wintermann@gmail.com>
parents: 438
diff changeset
656 closest = right;
d218607f5a7e update ucx
Olaf Wintermann <olaf.wintermann@gmail.com>
parents: 438
diff changeset
657 other = left;
d218607f5a7e update ucx
Olaf Wintermann <olaf.wintermann@gmail.com>
parents: 438
diff changeset
658 diff2boundary = left;
d218607f5a7e update ucx
Olaf Wintermann <olaf.wintermann@gmail.com>
parents: 438
diff changeset
659 nright = cx_ll_node_at(ll, right);
d218607f5a7e update ucx
Olaf Wintermann <olaf.wintermann@gmail.com>
parents: 438
diff changeset
660 }
d218607f5a7e update ucx
Olaf Wintermann <olaf.wintermann@gmail.com>
parents: 438
diff changeset
661
d218607f5a7e update ucx
Olaf Wintermann <olaf.wintermann@gmail.com>
parents: 438
diff changeset
662 // is other element closer to us or closer to boundary?
d218607f5a7e update ucx
Olaf Wintermann <olaf.wintermann@gmail.com>
parents: 438
diff changeset
663 if (right - left <= diff2boundary) {
d218607f5a7e update ucx
Olaf Wintermann <olaf.wintermann@gmail.com>
parents: 438
diff changeset
664 // search other element starting from already found element
d218607f5a7e update ucx
Olaf Wintermann <olaf.wintermann@gmail.com>
parents: 438
diff changeset
665 if (closest == left) {
d218607f5a7e update ucx
Olaf Wintermann <olaf.wintermann@gmail.com>
parents: 438
diff changeset
666 nright = nleft;
d218607f5a7e update ucx
Olaf Wintermann <olaf.wintermann@gmail.com>
parents: 438
diff changeset
667 for (size_t c = left; c < right; c++) {
d218607f5a7e update ucx
Olaf Wintermann <olaf.wintermann@gmail.com>
parents: 438
diff changeset
668 nright = nright->next;
d218607f5a7e update ucx
Olaf Wintermann <olaf.wintermann@gmail.com>
parents: 438
diff changeset
669 }
d218607f5a7e update ucx
Olaf Wintermann <olaf.wintermann@gmail.com>
parents: 438
diff changeset
670 } else {
d218607f5a7e update ucx
Olaf Wintermann <olaf.wintermann@gmail.com>
parents: 438
diff changeset
671 nleft = nright;
d218607f5a7e update ucx
Olaf Wintermann <olaf.wintermann@gmail.com>
parents: 438
diff changeset
672 for (size_t c = right; c > left; c--) {
d218607f5a7e update ucx
Olaf Wintermann <olaf.wintermann@gmail.com>
parents: 438
diff changeset
673 nleft = nleft->prev;
d218607f5a7e update ucx
Olaf Wintermann <olaf.wintermann@gmail.com>
parents: 438
diff changeset
674 }
d218607f5a7e update ucx
Olaf Wintermann <olaf.wintermann@gmail.com>
parents: 438
diff changeset
675 }
d218607f5a7e update ucx
Olaf Wintermann <olaf.wintermann@gmail.com>
parents: 438
diff changeset
676 } else {
d218607f5a7e update ucx
Olaf Wintermann <olaf.wintermann@gmail.com>
parents: 438
diff changeset
677 // search other element starting at the boundary
d218607f5a7e update ucx
Olaf Wintermann <olaf.wintermann@gmail.com>
parents: 438
diff changeset
678 if (closest == left) {
d218607f5a7e update ucx
Olaf Wintermann <olaf.wintermann@gmail.com>
parents: 438
diff changeset
679 nright = cx_ll_node_at(ll, other);
d218607f5a7e update ucx
Olaf Wintermann <olaf.wintermann@gmail.com>
parents: 438
diff changeset
680 } else {
d218607f5a7e update ucx
Olaf Wintermann <olaf.wintermann@gmail.com>
parents: 438
diff changeset
681 nleft = cx_ll_node_at(ll, other);
d218607f5a7e update ucx
Olaf Wintermann <olaf.wintermann@gmail.com>
parents: 438
diff changeset
682 }
d218607f5a7e update ucx
Olaf Wintermann <olaf.wintermann@gmail.com>
parents: 438
diff changeset
683 }
d218607f5a7e update ucx
Olaf Wintermann <olaf.wintermann@gmail.com>
parents: 438
diff changeset
684 }
d218607f5a7e update ucx
Olaf Wintermann <olaf.wintermann@gmail.com>
parents: 438
diff changeset
685
d218607f5a7e update ucx
Olaf Wintermann <olaf.wintermann@gmail.com>
parents: 438
diff changeset
686 if (list->item_size > CX_LINKED_LIST_SWAP_SBO_SIZE || CX_DISABLE_LINKED_LIST_SWAP_SBO) {
d218607f5a7e update ucx
Olaf Wintermann <olaf.wintermann@gmail.com>
parents: 438
diff changeset
687 cx_linked_list_node *prev = nleft->prev;
d218607f5a7e update ucx
Olaf Wintermann <olaf.wintermann@gmail.com>
parents: 438
diff changeset
688 cx_linked_list_node *next = nright->next;
d218607f5a7e update ucx
Olaf Wintermann <olaf.wintermann@gmail.com>
parents: 438
diff changeset
689 cx_linked_list_node *midstart = nleft->next;
d218607f5a7e update ucx
Olaf Wintermann <olaf.wintermann@gmail.com>
parents: 438
diff changeset
690 cx_linked_list_node *midend = nright->prev;
d218607f5a7e update ucx
Olaf Wintermann <olaf.wintermann@gmail.com>
parents: 438
diff changeset
691
d218607f5a7e update ucx
Olaf Wintermann <olaf.wintermann@gmail.com>
parents: 438
diff changeset
692 if (prev == NULL) {
d218607f5a7e update ucx
Olaf Wintermann <olaf.wintermann@gmail.com>
parents: 438
diff changeset
693 ll->begin = nright;
d218607f5a7e update ucx
Olaf Wintermann <olaf.wintermann@gmail.com>
parents: 438
diff changeset
694 } else {
d218607f5a7e update ucx
Olaf Wintermann <olaf.wintermann@gmail.com>
parents: 438
diff changeset
695 prev->next = nright;
d218607f5a7e update ucx
Olaf Wintermann <olaf.wintermann@gmail.com>
parents: 438
diff changeset
696 }
d218607f5a7e update ucx
Olaf Wintermann <olaf.wintermann@gmail.com>
parents: 438
diff changeset
697 nright->prev = prev;
d218607f5a7e update ucx
Olaf Wintermann <olaf.wintermann@gmail.com>
parents: 438
diff changeset
698 if (midstart == nright) {
d218607f5a7e update ucx
Olaf Wintermann <olaf.wintermann@gmail.com>
parents: 438
diff changeset
699 // special case: both nodes are adjacent
d218607f5a7e update ucx
Olaf Wintermann <olaf.wintermann@gmail.com>
parents: 438
diff changeset
700 nright->next = nleft;
d218607f5a7e update ucx
Olaf Wintermann <olaf.wintermann@gmail.com>
parents: 438
diff changeset
701 nleft->prev = nright;
d218607f5a7e update ucx
Olaf Wintermann <olaf.wintermann@gmail.com>
parents: 438
diff changeset
702 } else {
d218607f5a7e update ucx
Olaf Wintermann <olaf.wintermann@gmail.com>
parents: 438
diff changeset
703 // likely case: a chain is between the two nodes
d218607f5a7e update ucx
Olaf Wintermann <olaf.wintermann@gmail.com>
parents: 438
diff changeset
704 nright->next = midstart;
d218607f5a7e update ucx
Olaf Wintermann <olaf.wintermann@gmail.com>
parents: 438
diff changeset
705 midstart->prev = nright;
d218607f5a7e update ucx
Olaf Wintermann <olaf.wintermann@gmail.com>
parents: 438
diff changeset
706 midend->next = nleft;
d218607f5a7e update ucx
Olaf Wintermann <olaf.wintermann@gmail.com>
parents: 438
diff changeset
707 nleft->prev = midend;
d218607f5a7e update ucx
Olaf Wintermann <olaf.wintermann@gmail.com>
parents: 438
diff changeset
708 }
d218607f5a7e update ucx
Olaf Wintermann <olaf.wintermann@gmail.com>
parents: 438
diff changeset
709 nleft->next = next;
d218607f5a7e update ucx
Olaf Wintermann <olaf.wintermann@gmail.com>
parents: 438
diff changeset
710 if (next == NULL) {
d218607f5a7e update ucx
Olaf Wintermann <olaf.wintermann@gmail.com>
parents: 438
diff changeset
711 ll->end = nleft;
d218607f5a7e update ucx
Olaf Wintermann <olaf.wintermann@gmail.com>
parents: 438
diff changeset
712 } else {
d218607f5a7e update ucx
Olaf Wintermann <olaf.wintermann@gmail.com>
parents: 438
diff changeset
713 next->prev = nleft;
d218607f5a7e update ucx
Olaf Wintermann <olaf.wintermann@gmail.com>
parents: 438
diff changeset
714 }
d218607f5a7e update ucx
Olaf Wintermann <olaf.wintermann@gmail.com>
parents: 438
diff changeset
715 } else {
d218607f5a7e update ucx
Olaf Wintermann <olaf.wintermann@gmail.com>
parents: 438
diff changeset
716 // swap payloads to avoid relinking
d218607f5a7e update ucx
Olaf Wintermann <olaf.wintermann@gmail.com>
parents: 438
diff changeset
717 char buf[CX_LINKED_LIST_SWAP_SBO_SIZE];
d218607f5a7e update ucx
Olaf Wintermann <olaf.wintermann@gmail.com>
parents: 438
diff changeset
718 memcpy(buf, nleft->payload, list->item_size);
d218607f5a7e update ucx
Olaf Wintermann <olaf.wintermann@gmail.com>
parents: 438
diff changeset
719 memcpy(nleft->payload, nright->payload, list->item_size);
d218607f5a7e update ucx
Olaf Wintermann <olaf.wintermann@gmail.com>
parents: 438
diff changeset
720 memcpy(nright->payload, buf, list->item_size);
d218607f5a7e update ucx
Olaf Wintermann <olaf.wintermann@gmail.com>
parents: 438
diff changeset
721 }
d218607f5a7e update ucx
Olaf Wintermann <olaf.wintermann@gmail.com>
parents: 438
diff changeset
722
d218607f5a7e update ucx
Olaf Wintermann <olaf.wintermann@gmail.com>
parents: 438
diff changeset
723 return 0;
d218607f5a7e update ucx
Olaf Wintermann <olaf.wintermann@gmail.com>
parents: 438
diff changeset
724 }
d218607f5a7e update ucx
Olaf Wintermann <olaf.wintermann@gmail.com>
parents: 438
diff changeset
725
415
d938228c382e switch from ucx 2 to 3
Olaf Wintermann <olaf.wintermann@gmail.com>
parents:
diff changeset
726 static void *cx_ll_at(
d938228c382e switch from ucx 2 to 3
Olaf Wintermann <olaf.wintermann@gmail.com>
parents:
diff changeset
727 struct cx_list_s const *list,
d938228c382e switch from ucx 2 to 3
Olaf Wintermann <olaf.wintermann@gmail.com>
parents:
diff changeset
728 size_t index
d938228c382e switch from ucx 2 to 3
Olaf Wintermann <olaf.wintermann@gmail.com>
parents:
diff changeset
729 ) {
d938228c382e switch from ucx 2 to 3
Olaf Wintermann <olaf.wintermann@gmail.com>
parents:
diff changeset
730 cx_linked_list *ll = (cx_linked_list *) list;
d938228c382e switch from ucx 2 to 3
Olaf Wintermann <olaf.wintermann@gmail.com>
parents:
diff changeset
731 cx_linked_list_node *node = cx_ll_node_at(ll, index);
d938228c382e switch from ucx 2 to 3
Olaf Wintermann <olaf.wintermann@gmail.com>
parents:
diff changeset
732 return node == NULL ? NULL : node->payload;
d938228c382e switch from ucx 2 to 3
Olaf Wintermann <olaf.wintermann@gmail.com>
parents:
diff changeset
733 }
d938228c382e switch from ucx 2 to 3
Olaf Wintermann <olaf.wintermann@gmail.com>
parents:
diff changeset
734
490
d218607f5a7e update ucx
Olaf Wintermann <olaf.wintermann@gmail.com>
parents: 438
diff changeset
735 static ssize_t cx_ll_find(
415
d938228c382e switch from ucx 2 to 3
Olaf Wintermann <olaf.wintermann@gmail.com>
parents:
diff changeset
736 struct cx_list_s const *list,
d938228c382e switch from ucx 2 to 3
Olaf Wintermann <olaf.wintermann@gmail.com>
parents:
diff changeset
737 void const *elem
d938228c382e switch from ucx 2 to 3
Olaf Wintermann <olaf.wintermann@gmail.com>
parents:
diff changeset
738 ) {
d938228c382e switch from ucx 2 to 3
Olaf Wintermann <olaf.wintermann@gmail.com>
parents:
diff changeset
739 return cx_linked_list_find(((cx_linked_list *) list)->begin,
d938228c382e switch from ucx 2 to 3
Olaf Wintermann <olaf.wintermann@gmail.com>
parents:
diff changeset
740 CX_LL_LOC_NEXT, CX_LL_LOC_DATA,
490
d218607f5a7e update ucx
Olaf Wintermann <olaf.wintermann@gmail.com>
parents: 438
diff changeset
741 list->cmpfunc, elem);
415
d938228c382e switch from ucx 2 to 3
Olaf Wintermann <olaf.wintermann@gmail.com>
parents:
diff changeset
742 }
d938228c382e switch from ucx 2 to 3
Olaf Wintermann <olaf.wintermann@gmail.com>
parents:
diff changeset
743
d938228c382e switch from ucx 2 to 3
Olaf Wintermann <olaf.wintermann@gmail.com>
parents:
diff changeset
744 static void cx_ll_sort(struct cx_list_s *list) {
d938228c382e switch from ucx 2 to 3
Olaf Wintermann <olaf.wintermann@gmail.com>
parents:
diff changeset
745 cx_linked_list *ll = (cx_linked_list *) list;
d938228c382e switch from ucx 2 to 3
Olaf Wintermann <olaf.wintermann@gmail.com>
parents:
diff changeset
746 cx_linked_list_sort((void **) &ll->begin, (void **) &ll->end,
d938228c382e switch from ucx 2 to 3
Olaf Wintermann <olaf.wintermann@gmail.com>
parents:
diff changeset
747 CX_LL_LOC_PREV, CX_LL_LOC_NEXT, CX_LL_LOC_DATA,
490
d218607f5a7e update ucx
Olaf Wintermann <olaf.wintermann@gmail.com>
parents: 438
diff changeset
748 list->cmpfunc);
415
d938228c382e switch from ucx 2 to 3
Olaf Wintermann <olaf.wintermann@gmail.com>
parents:
diff changeset
749 }
d938228c382e switch from ucx 2 to 3
Olaf Wintermann <olaf.wintermann@gmail.com>
parents:
diff changeset
750
d938228c382e switch from ucx 2 to 3
Olaf Wintermann <olaf.wintermann@gmail.com>
parents:
diff changeset
751 static void cx_ll_reverse(struct cx_list_s *list) {
d938228c382e switch from ucx 2 to 3
Olaf Wintermann <olaf.wintermann@gmail.com>
parents:
diff changeset
752 cx_linked_list *ll = (cx_linked_list *) list;
d938228c382e switch from ucx 2 to 3
Olaf Wintermann <olaf.wintermann@gmail.com>
parents:
diff changeset
753 cx_linked_list_reverse((void **) &ll->begin, (void **) &ll->end, CX_LL_LOC_PREV, CX_LL_LOC_NEXT);
d938228c382e switch from ucx 2 to 3
Olaf Wintermann <olaf.wintermann@gmail.com>
parents:
diff changeset
754 }
d938228c382e switch from ucx 2 to 3
Olaf Wintermann <olaf.wintermann@gmail.com>
parents:
diff changeset
755
d938228c382e switch from ucx 2 to 3
Olaf Wintermann <olaf.wintermann@gmail.com>
parents:
diff changeset
756 static int cx_ll_compare(
d938228c382e switch from ucx 2 to 3
Olaf Wintermann <olaf.wintermann@gmail.com>
parents:
diff changeset
757 struct cx_list_s const *list,
d938228c382e switch from ucx 2 to 3
Olaf Wintermann <olaf.wintermann@gmail.com>
parents:
diff changeset
758 struct cx_list_s const *other
d938228c382e switch from ucx 2 to 3
Olaf Wintermann <olaf.wintermann@gmail.com>
parents:
diff changeset
759 ) {
d938228c382e switch from ucx 2 to 3
Olaf Wintermann <olaf.wintermann@gmail.com>
parents:
diff changeset
760 cx_linked_list *left = (cx_linked_list *) list;
d938228c382e switch from ucx 2 to 3
Olaf Wintermann <olaf.wintermann@gmail.com>
parents:
diff changeset
761 cx_linked_list *right = (cx_linked_list *) other;
d938228c382e switch from ucx 2 to 3
Olaf Wintermann <olaf.wintermann@gmail.com>
parents:
diff changeset
762 return cx_linked_list_compare(left->begin, right->begin,
d938228c382e switch from ucx 2 to 3
Olaf Wintermann <olaf.wintermann@gmail.com>
parents:
diff changeset
763 CX_LL_LOC_NEXT, CX_LL_LOC_DATA,
490
d218607f5a7e update ucx
Olaf Wintermann <olaf.wintermann@gmail.com>
parents: 438
diff changeset
764 list->cmpfunc);
415
d938228c382e switch from ucx 2 to 3
Olaf Wintermann <olaf.wintermann@gmail.com>
parents:
diff changeset
765 }
d938228c382e switch from ucx 2 to 3
Olaf Wintermann <olaf.wintermann@gmail.com>
parents:
diff changeset
766
438
22eca559aded refactore http listener creation
Olaf Wintermann <olaf.wintermann@gmail.com>
parents: 415
diff changeset
767 static bool cx_ll_iter_valid(void const *it) {
22eca559aded refactore http listener creation
Olaf Wintermann <olaf.wintermann@gmail.com>
parents: 415
diff changeset
768 struct cx_iterator_s const *iter = it;
415
d938228c382e switch from ucx 2 to 3
Olaf Wintermann <olaf.wintermann@gmail.com>
parents:
diff changeset
769 return iter->elem_handle != NULL;
d938228c382e switch from ucx 2 to 3
Olaf Wintermann <olaf.wintermann@gmail.com>
parents:
diff changeset
770 }
d938228c382e switch from ucx 2 to 3
Olaf Wintermann <olaf.wintermann@gmail.com>
parents:
diff changeset
771
438
22eca559aded refactore http listener creation
Olaf Wintermann <olaf.wintermann@gmail.com>
parents: 415
diff changeset
772 static void cx_ll_iter_next(void *it) {
22eca559aded refactore http listener creation
Olaf Wintermann <olaf.wintermann@gmail.com>
parents: 415
diff changeset
773 struct cx_iterator_base_s *itbase = it;
22eca559aded refactore http listener creation
Olaf Wintermann <olaf.wintermann@gmail.com>
parents: 415
diff changeset
774 if (itbase->remove) {
22eca559aded refactore http listener creation
Olaf Wintermann <olaf.wintermann@gmail.com>
parents: 415
diff changeset
775 itbase->remove = false;
22eca559aded refactore http listener creation
Olaf Wintermann <olaf.wintermann@gmail.com>
parents: 415
diff changeset
776 struct cx_mut_iterator_s *iter = it;
490
d218607f5a7e update ucx
Olaf Wintermann <olaf.wintermann@gmail.com>
parents: 438
diff changeset
777 struct cx_list_s *list = iter->src_handle;
415
d938228c382e switch from ucx 2 to 3
Olaf Wintermann <olaf.wintermann@gmail.com>
parents:
diff changeset
778 cx_linked_list *ll = iter->src_handle;
d938228c382e switch from ucx 2 to 3
Olaf Wintermann <olaf.wintermann@gmail.com>
parents:
diff changeset
779 cx_linked_list_node *node = iter->elem_handle;
d938228c382e switch from ucx 2 to 3
Olaf Wintermann <olaf.wintermann@gmail.com>
parents:
diff changeset
780 iter->elem_handle = node->next;
490
d218607f5a7e update ucx
Olaf Wintermann <olaf.wintermann@gmail.com>
parents: 438
diff changeset
781 cx_invoke_destructor(list, node->payload);
415
d938228c382e switch from ucx 2 to 3
Olaf Wintermann <olaf.wintermann@gmail.com>
parents:
diff changeset
782 cx_linked_list_remove((void **) &ll->begin, (void **) &ll->end,
d938228c382e switch from ucx 2 to 3
Olaf Wintermann <olaf.wintermann@gmail.com>
parents:
diff changeset
783 CX_LL_LOC_PREV, CX_LL_LOC_NEXT, node);
490
d218607f5a7e update ucx
Olaf Wintermann <olaf.wintermann@gmail.com>
parents: 438
diff changeset
784 list->size--;
d218607f5a7e update ucx
Olaf Wintermann <olaf.wintermann@gmail.com>
parents: 438
diff changeset
785 cxFree(list->allocator, node);
415
d938228c382e switch from ucx 2 to 3
Olaf Wintermann <olaf.wintermann@gmail.com>
parents:
diff changeset
786 } else {
438
22eca559aded refactore http listener creation
Olaf Wintermann <olaf.wintermann@gmail.com>
parents: 415
diff changeset
787 struct cx_iterator_s *iter = it;
415
d938228c382e switch from ucx 2 to 3
Olaf Wintermann <olaf.wintermann@gmail.com>
parents:
diff changeset
788 iter->index++;
d938228c382e switch from ucx 2 to 3
Olaf Wintermann <olaf.wintermann@gmail.com>
parents:
diff changeset
789 cx_linked_list_node *node = iter->elem_handle;
d938228c382e switch from ucx 2 to 3
Olaf Wintermann <olaf.wintermann@gmail.com>
parents:
diff changeset
790 iter->elem_handle = node->next;
d938228c382e switch from ucx 2 to 3
Olaf Wintermann <olaf.wintermann@gmail.com>
parents:
diff changeset
791 }
d938228c382e switch from ucx 2 to 3
Olaf Wintermann <olaf.wintermann@gmail.com>
parents:
diff changeset
792 }
d938228c382e switch from ucx 2 to 3
Olaf Wintermann <olaf.wintermann@gmail.com>
parents:
diff changeset
793
490
d218607f5a7e update ucx
Olaf Wintermann <olaf.wintermann@gmail.com>
parents: 438
diff changeset
794 static void cx_ll_iter_prev(void *it) {
d218607f5a7e update ucx
Olaf Wintermann <olaf.wintermann@gmail.com>
parents: 438
diff changeset
795 struct cx_iterator_base_s *itbase = it;
d218607f5a7e update ucx
Olaf Wintermann <olaf.wintermann@gmail.com>
parents: 438
diff changeset
796 if (itbase->remove) {
d218607f5a7e update ucx
Olaf Wintermann <olaf.wintermann@gmail.com>
parents: 438
diff changeset
797 itbase->remove = false;
d218607f5a7e update ucx
Olaf Wintermann <olaf.wintermann@gmail.com>
parents: 438
diff changeset
798 struct cx_mut_iterator_s *iter = it;
d218607f5a7e update ucx
Olaf Wintermann <olaf.wintermann@gmail.com>
parents: 438
diff changeset
799 struct cx_list_s *list = iter->src_handle;
d218607f5a7e update ucx
Olaf Wintermann <olaf.wintermann@gmail.com>
parents: 438
diff changeset
800 cx_linked_list *ll = iter->src_handle;
d218607f5a7e update ucx
Olaf Wintermann <olaf.wintermann@gmail.com>
parents: 438
diff changeset
801 cx_linked_list_node *node = iter->elem_handle;
d218607f5a7e update ucx
Olaf Wintermann <olaf.wintermann@gmail.com>
parents: 438
diff changeset
802 iter->elem_handle = node->prev;
d218607f5a7e update ucx
Olaf Wintermann <olaf.wintermann@gmail.com>
parents: 438
diff changeset
803 iter->index--;
d218607f5a7e update ucx
Olaf Wintermann <olaf.wintermann@gmail.com>
parents: 438
diff changeset
804 cx_invoke_destructor(list, node->payload);
d218607f5a7e update ucx
Olaf Wintermann <olaf.wintermann@gmail.com>
parents: 438
diff changeset
805 cx_linked_list_remove((void **) &ll->begin, (void **) &ll->end,
d218607f5a7e update ucx
Olaf Wintermann <olaf.wintermann@gmail.com>
parents: 438
diff changeset
806 CX_LL_LOC_PREV, CX_LL_LOC_NEXT, node);
d218607f5a7e update ucx
Olaf Wintermann <olaf.wintermann@gmail.com>
parents: 438
diff changeset
807 list->size--;
d218607f5a7e update ucx
Olaf Wintermann <olaf.wintermann@gmail.com>
parents: 438
diff changeset
808 cxFree(list->allocator, node);
d218607f5a7e update ucx
Olaf Wintermann <olaf.wintermann@gmail.com>
parents: 438
diff changeset
809 } else {
d218607f5a7e update ucx
Olaf Wintermann <olaf.wintermann@gmail.com>
parents: 438
diff changeset
810 struct cx_iterator_s *iter = it;
d218607f5a7e update ucx
Olaf Wintermann <olaf.wintermann@gmail.com>
parents: 438
diff changeset
811 iter->index--;
d218607f5a7e update ucx
Olaf Wintermann <olaf.wintermann@gmail.com>
parents: 438
diff changeset
812 cx_linked_list_node *node = iter->elem_handle;
d218607f5a7e update ucx
Olaf Wintermann <olaf.wintermann@gmail.com>
parents: 438
diff changeset
813 iter->elem_handle = node->prev;
d218607f5a7e update ucx
Olaf Wintermann <olaf.wintermann@gmail.com>
parents: 438
diff changeset
814 }
d218607f5a7e update ucx
Olaf Wintermann <olaf.wintermann@gmail.com>
parents: 438
diff changeset
815 }
d218607f5a7e update ucx
Olaf Wintermann <olaf.wintermann@gmail.com>
parents: 438
diff changeset
816
438
22eca559aded refactore http listener creation
Olaf Wintermann <olaf.wintermann@gmail.com>
parents: 415
diff changeset
817 static void *cx_ll_iter_current(void const *it) {
22eca559aded refactore http listener creation
Olaf Wintermann <olaf.wintermann@gmail.com>
parents: 415
diff changeset
818 struct cx_iterator_s const *iter = it;
415
d938228c382e switch from ucx 2 to 3
Olaf Wintermann <olaf.wintermann@gmail.com>
parents:
diff changeset
819 cx_linked_list_node *node = iter->elem_handle;
d938228c382e switch from ucx 2 to 3
Olaf Wintermann <olaf.wintermann@gmail.com>
parents:
diff changeset
820 return node->payload;
d938228c382e switch from ucx 2 to 3
Olaf Wintermann <olaf.wintermann@gmail.com>
parents:
diff changeset
821 }
d938228c382e switch from ucx 2 to 3
Olaf Wintermann <olaf.wintermann@gmail.com>
parents:
diff changeset
822
438
22eca559aded refactore http listener creation
Olaf Wintermann <olaf.wintermann@gmail.com>
parents: 415
diff changeset
823 static bool cx_ll_iter_flag_rm(void *it) {
22eca559aded refactore http listener creation
Olaf Wintermann <olaf.wintermann@gmail.com>
parents: 415
diff changeset
824 struct cx_iterator_base_s *iter = it;
22eca559aded refactore http listener creation
Olaf Wintermann <olaf.wintermann@gmail.com>
parents: 415
diff changeset
825 if (iter->mutating) {
22eca559aded refactore http listener creation
Olaf Wintermann <olaf.wintermann@gmail.com>
parents: 415
diff changeset
826 iter->remove = true;
22eca559aded refactore http listener creation
Olaf Wintermann <olaf.wintermann@gmail.com>
parents: 415
diff changeset
827 return true;
22eca559aded refactore http listener creation
Olaf Wintermann <olaf.wintermann@gmail.com>
parents: 415
diff changeset
828 } else {
22eca559aded refactore http listener creation
Olaf Wintermann <olaf.wintermann@gmail.com>
parents: 415
diff changeset
829 return false;
22eca559aded refactore http listener creation
Olaf Wintermann <olaf.wintermann@gmail.com>
parents: 415
diff changeset
830 }
22eca559aded refactore http listener creation
Olaf Wintermann <olaf.wintermann@gmail.com>
parents: 415
diff changeset
831 }
22eca559aded refactore http listener creation
Olaf Wintermann <olaf.wintermann@gmail.com>
parents: 415
diff changeset
832
415
d938228c382e switch from ucx 2 to 3
Olaf Wintermann <olaf.wintermann@gmail.com>
parents:
diff changeset
833 static CxIterator cx_ll_iterator(
438
22eca559aded refactore http listener creation
Olaf Wintermann <olaf.wintermann@gmail.com>
parents: 415
diff changeset
834 struct cx_list_s const *list,
490
d218607f5a7e update ucx
Olaf Wintermann <olaf.wintermann@gmail.com>
parents: 438
diff changeset
835 size_t index,
d218607f5a7e update ucx
Olaf Wintermann <olaf.wintermann@gmail.com>
parents: 438
diff changeset
836 bool backwards
415
d938228c382e switch from ucx 2 to 3
Olaf Wintermann <olaf.wintermann@gmail.com>
parents:
diff changeset
837 ) {
d938228c382e switch from ucx 2 to 3
Olaf Wintermann <olaf.wintermann@gmail.com>
parents:
diff changeset
838 CxIterator iter;
d938228c382e switch from ucx 2 to 3
Olaf Wintermann <olaf.wintermann@gmail.com>
parents:
diff changeset
839 iter.index = index;
d938228c382e switch from ucx 2 to 3
Olaf Wintermann <olaf.wintermann@gmail.com>
parents:
diff changeset
840 iter.src_handle = list;
d938228c382e switch from ucx 2 to 3
Olaf Wintermann <olaf.wintermann@gmail.com>
parents:
diff changeset
841 iter.elem_handle = cx_ll_node_at((cx_linked_list const *) list, index);
438
22eca559aded refactore http listener creation
Olaf Wintermann <olaf.wintermann@gmail.com>
parents: 415
diff changeset
842 iter.base.valid = cx_ll_iter_valid;
22eca559aded refactore http listener creation
Olaf Wintermann <olaf.wintermann@gmail.com>
parents: 415
diff changeset
843 iter.base.current = cx_ll_iter_current;
490
d218607f5a7e update ucx
Olaf Wintermann <olaf.wintermann@gmail.com>
parents: 438
diff changeset
844 iter.base.next = backwards ? cx_ll_iter_prev : cx_ll_iter_next;
438
22eca559aded refactore http listener creation
Olaf Wintermann <olaf.wintermann@gmail.com>
parents: 415
diff changeset
845 iter.base.flag_removal = cx_ll_iter_flag_rm;
22eca559aded refactore http listener creation
Olaf Wintermann <olaf.wintermann@gmail.com>
parents: 415
diff changeset
846 iter.base.mutating = false;
22eca559aded refactore http listener creation
Olaf Wintermann <olaf.wintermann@gmail.com>
parents: 415
diff changeset
847 iter.base.remove = false;
415
d938228c382e switch from ucx 2 to 3
Olaf Wintermann <olaf.wintermann@gmail.com>
parents:
diff changeset
848 return iter;
d938228c382e switch from ucx 2 to 3
Olaf Wintermann <olaf.wintermann@gmail.com>
parents:
diff changeset
849 }
d938228c382e switch from ucx 2 to 3
Olaf Wintermann <olaf.wintermann@gmail.com>
parents:
diff changeset
850
d938228c382e switch from ucx 2 to 3
Olaf Wintermann <olaf.wintermann@gmail.com>
parents:
diff changeset
851 static int cx_ll_insert_iter(
438
22eca559aded refactore http listener creation
Olaf Wintermann <olaf.wintermann@gmail.com>
parents: 415
diff changeset
852 CxMutIterator *iter,
415
d938228c382e switch from ucx 2 to 3
Olaf Wintermann <olaf.wintermann@gmail.com>
parents:
diff changeset
853 void const *elem,
d938228c382e switch from ucx 2 to 3
Olaf Wintermann <olaf.wintermann@gmail.com>
parents:
diff changeset
854 int prepend
d938228c382e switch from ucx 2 to 3
Olaf Wintermann <olaf.wintermann@gmail.com>
parents:
diff changeset
855 ) {
d938228c382e switch from ucx 2 to 3
Olaf Wintermann <olaf.wintermann@gmail.com>
parents:
diff changeset
856 struct cx_list_s *list = iter->src_handle;
d938228c382e switch from ucx 2 to 3
Olaf Wintermann <olaf.wintermann@gmail.com>
parents:
diff changeset
857 cx_linked_list_node *node = iter->elem_handle;
d938228c382e switch from ucx 2 to 3
Olaf Wintermann <olaf.wintermann@gmail.com>
parents:
diff changeset
858 if (node != NULL) {
d938228c382e switch from ucx 2 to 3
Olaf Wintermann <olaf.wintermann@gmail.com>
parents:
diff changeset
859 assert(prepend >= 0 && prepend <= 1);
d938228c382e switch from ucx 2 to 3
Olaf Wintermann <olaf.wintermann@gmail.com>
parents:
diff changeset
860 cx_linked_list_node *choice[2] = {node, node->prev};
d938228c382e switch from ucx 2 to 3
Olaf Wintermann <olaf.wintermann@gmail.com>
parents:
diff changeset
861 int result = cx_ll_insert_at(list, choice[prepend], elem);
d938228c382e switch from ucx 2 to 3
Olaf Wintermann <olaf.wintermann@gmail.com>
parents:
diff changeset
862 iter->index += prepend * (0 == result);
d938228c382e switch from ucx 2 to 3
Olaf Wintermann <olaf.wintermann@gmail.com>
parents:
diff changeset
863 return result;
d938228c382e switch from ucx 2 to 3
Olaf Wintermann <olaf.wintermann@gmail.com>
parents:
diff changeset
864 } else {
490
d218607f5a7e update ucx
Olaf Wintermann <olaf.wintermann@gmail.com>
parents: 438
diff changeset
865 int result = cx_ll_insert_element(list, list->size, elem);
415
d938228c382e switch from ucx 2 to 3
Olaf Wintermann <olaf.wintermann@gmail.com>
parents:
diff changeset
866 iter->index = list->size;
d938228c382e switch from ucx 2 to 3
Olaf Wintermann <olaf.wintermann@gmail.com>
parents:
diff changeset
867 return result;
d938228c382e switch from ucx 2 to 3
Olaf Wintermann <olaf.wintermann@gmail.com>
parents:
diff changeset
868 }
d938228c382e switch from ucx 2 to 3
Olaf Wintermann <olaf.wintermann@gmail.com>
parents:
diff changeset
869 }
d938228c382e switch from ucx 2 to 3
Olaf Wintermann <olaf.wintermann@gmail.com>
parents:
diff changeset
870
d938228c382e switch from ucx 2 to 3
Olaf Wintermann <olaf.wintermann@gmail.com>
parents:
diff changeset
871 static void cx_ll_destructor(CxList *list) {
d938228c382e switch from ucx 2 to 3
Olaf Wintermann <olaf.wintermann@gmail.com>
parents:
diff changeset
872 cx_linked_list *ll = (cx_linked_list *) list;
d938228c382e switch from ucx 2 to 3
Olaf Wintermann <olaf.wintermann@gmail.com>
parents:
diff changeset
873
d938228c382e switch from ucx 2 to 3
Olaf Wintermann <olaf.wintermann@gmail.com>
parents:
diff changeset
874 cx_linked_list_node *node = ll->begin;
d938228c382e switch from ucx 2 to 3
Olaf Wintermann <olaf.wintermann@gmail.com>
parents:
diff changeset
875 while (node) {
d938228c382e switch from ucx 2 to 3
Olaf Wintermann <olaf.wintermann@gmail.com>
parents:
diff changeset
876 void *next = node->next;
d938228c382e switch from ucx 2 to 3
Olaf Wintermann <olaf.wintermann@gmail.com>
parents:
diff changeset
877 cxFree(list->allocator, node);
d938228c382e switch from ucx 2 to 3
Olaf Wintermann <olaf.wintermann@gmail.com>
parents:
diff changeset
878 node = next;
d938228c382e switch from ucx 2 to 3
Olaf Wintermann <olaf.wintermann@gmail.com>
parents:
diff changeset
879 }
d938228c382e switch from ucx 2 to 3
Olaf Wintermann <olaf.wintermann@gmail.com>
parents:
diff changeset
880 // do not free the list pointer, this is just a destructor!
d938228c382e switch from ucx 2 to 3
Olaf Wintermann <olaf.wintermann@gmail.com>
parents:
diff changeset
881 }
d938228c382e switch from ucx 2 to 3
Olaf Wintermann <olaf.wintermann@gmail.com>
parents:
diff changeset
882
d938228c382e switch from ucx 2 to 3
Olaf Wintermann <olaf.wintermann@gmail.com>
parents:
diff changeset
883 static cx_list_class cx_linked_list_class = {
d938228c382e switch from ucx 2 to 3
Olaf Wintermann <olaf.wintermann@gmail.com>
parents:
diff changeset
884 cx_ll_destructor,
490
d218607f5a7e update ucx
Olaf Wintermann <olaf.wintermann@gmail.com>
parents: 438
diff changeset
885 cx_ll_insert_element,
d218607f5a7e update ucx
Olaf Wintermann <olaf.wintermann@gmail.com>
parents: 438
diff changeset
886 cx_ll_insert_array,
415
d938228c382e switch from ucx 2 to 3
Olaf Wintermann <olaf.wintermann@gmail.com>
parents:
diff changeset
887 cx_ll_insert_iter,
d938228c382e switch from ucx 2 to 3
Olaf Wintermann <olaf.wintermann@gmail.com>
parents:
diff changeset
888 cx_ll_remove,
490
d218607f5a7e update ucx
Olaf Wintermann <olaf.wintermann@gmail.com>
parents: 438
diff changeset
889 cx_ll_clear,
d218607f5a7e update ucx
Olaf Wintermann <olaf.wintermann@gmail.com>
parents: 438
diff changeset
890 cx_ll_swap,
415
d938228c382e switch from ucx 2 to 3
Olaf Wintermann <olaf.wintermann@gmail.com>
parents:
diff changeset
891 cx_ll_at,
d938228c382e switch from ucx 2 to 3
Olaf Wintermann <olaf.wintermann@gmail.com>
parents:
diff changeset
892 cx_ll_find,
d938228c382e switch from ucx 2 to 3
Olaf Wintermann <olaf.wintermann@gmail.com>
parents:
diff changeset
893 cx_ll_sort,
d938228c382e switch from ucx 2 to 3
Olaf Wintermann <olaf.wintermann@gmail.com>
parents:
diff changeset
894 cx_ll_compare,
d938228c382e switch from ucx 2 to 3
Olaf Wintermann <olaf.wintermann@gmail.com>
parents:
diff changeset
895 cx_ll_reverse,
438
22eca559aded refactore http listener creation
Olaf Wintermann <olaf.wintermann@gmail.com>
parents: 415
diff changeset
896 cx_ll_iterator,
415
d938228c382e switch from ucx 2 to 3
Olaf Wintermann <olaf.wintermann@gmail.com>
parents:
diff changeset
897 };
d938228c382e switch from ucx 2 to 3
Olaf Wintermann <olaf.wintermann@gmail.com>
parents:
diff changeset
898
d938228c382e switch from ucx 2 to 3
Olaf Wintermann <olaf.wintermann@gmail.com>
parents:
diff changeset
899 CxList *cxLinkedListCreate(
d938228c382e switch from ucx 2 to 3
Olaf Wintermann <olaf.wintermann@gmail.com>
parents:
diff changeset
900 CxAllocator const *allocator,
490
d218607f5a7e update ucx
Olaf Wintermann <olaf.wintermann@gmail.com>
parents: 438
diff changeset
901 cx_compare_func comparator,
415
d938228c382e switch from ucx 2 to 3
Olaf Wintermann <olaf.wintermann@gmail.com>
parents:
diff changeset
902 size_t item_size
d938228c382e switch from ucx 2 to 3
Olaf Wintermann <olaf.wintermann@gmail.com>
parents:
diff changeset
903 ) {
490
d218607f5a7e update ucx
Olaf Wintermann <olaf.wintermann@gmail.com>
parents: 438
diff changeset
904 if (allocator == NULL) {
d218607f5a7e update ucx
Olaf Wintermann <olaf.wintermann@gmail.com>
parents: 438
diff changeset
905 allocator = cxDefaultAllocator;
d218607f5a7e update ucx
Olaf Wintermann <olaf.wintermann@gmail.com>
parents: 438
diff changeset
906 }
d218607f5a7e update ucx
Olaf Wintermann <olaf.wintermann@gmail.com>
parents: 438
diff changeset
907
415
d938228c382e switch from ucx 2 to 3
Olaf Wintermann <olaf.wintermann@gmail.com>
parents:
diff changeset
908 cx_linked_list *list = cxCalloc(allocator, 1, sizeof(cx_linked_list));
d938228c382e switch from ucx 2 to 3
Olaf Wintermann <olaf.wintermann@gmail.com>
parents:
diff changeset
909 if (list == NULL) return NULL;
d938228c382e switch from ucx 2 to 3
Olaf Wintermann <olaf.wintermann@gmail.com>
parents:
diff changeset
910
d938228c382e switch from ucx 2 to 3
Olaf Wintermann <olaf.wintermann@gmail.com>
parents:
diff changeset
911 list->base.cl = &cx_linked_list_class;
d938228c382e switch from ucx 2 to 3
Olaf Wintermann <olaf.wintermann@gmail.com>
parents:
diff changeset
912 list->base.allocator = allocator;
d938228c382e switch from ucx 2 to 3
Olaf Wintermann <olaf.wintermann@gmail.com>
parents:
diff changeset
913 list->base.cmpfunc = comparator;
490
d218607f5a7e update ucx
Olaf Wintermann <olaf.wintermann@gmail.com>
parents: 438
diff changeset
914
d218607f5a7e update ucx
Olaf Wintermann <olaf.wintermann@gmail.com>
parents: 438
diff changeset
915 if (item_size > 0) {
d218607f5a7e update ucx
Olaf Wintermann <olaf.wintermann@gmail.com>
parents: 438
diff changeset
916 list->base.item_size = item_size;
d218607f5a7e update ucx
Olaf Wintermann <olaf.wintermann@gmail.com>
parents: 438
diff changeset
917 } else {
d218607f5a7e update ucx
Olaf Wintermann <olaf.wintermann@gmail.com>
parents: 438
diff changeset
918 cxListStorePointers((CxList *) list);
d218607f5a7e update ucx
Olaf Wintermann <olaf.wintermann@gmail.com>
parents: 438
diff changeset
919 }
415
d938228c382e switch from ucx 2 to 3
Olaf Wintermann <olaf.wintermann@gmail.com>
parents:
diff changeset
920
d938228c382e switch from ucx 2 to 3
Olaf Wintermann <olaf.wintermann@gmail.com>
parents:
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921 return (CxList *) list;
d938228c382e switch from ucx 2 to 3
Olaf Wintermann <olaf.wintermann@gmail.com>
parents:
diff changeset
922 }

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