src/ucx/list.c

Wed, 28 Dec 2016 17:27:14 +0100

author
Olaf Wintermann <olaf.wintermann@gmail.com>
date
Wed, 28 Dec 2016 17:27:14 +0100
changeset 139
29ac9aed4889
parent 135
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child 254
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permissions
-rw-r--r--

fixes some memory errors and startup with broken config

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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 2016 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 "list.h"
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30
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31 UcxList *ucx_list_clone(UcxList *l, copy_func fnc, void *data) {
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32 return ucx_list_clone_a(ucx_default_allocator(), l, fnc, data);
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33 }
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34
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35 UcxList *ucx_list_clone_a(UcxAllocator *alloc, UcxList *l,
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36 copy_func fnc, void *data) {
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37 UcxList *ret = NULL;
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38 while (l) {
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39 if (fnc) {
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40 ret = ucx_list_append_a(alloc, ret, fnc(l->data, data));
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41 } else {
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42 ret = ucx_list_append_a(alloc, ret, l->data);
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43 }
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44 l = l->next;
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45 }
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46 return ret;
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47 }
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48
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49 int ucx_list_equals(const UcxList *l1, const UcxList *l2,
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50 cmp_func fnc, void* data) {
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51 if (l1 == l2) return 1;
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52
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53 while (l1 != NULL && l2 != NULL) {
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54 if (fnc == NULL) {
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55 if (l1->data != l2->data) return 0;
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56 } else {
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57 if (fnc(l1->data, l2->data, data) != 0) return 0;
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58 }
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59 l1 = l1->next;
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60 l2 = l2->next;
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61 }
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62
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63 return (l1 == NULL && l2 == NULL);
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64 }
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65
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66 void ucx_list_free(UcxList *l) {
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67 ucx_list_free_a(ucx_default_allocator(), l);
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68 }
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69
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70 void ucx_list_free_a(UcxAllocator *alloc, UcxList *l) {
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71 UcxList *e = l, *f;
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72 while (e != NULL) {
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73 f = e;
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74 e = e->next;
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75 alfree(alloc, f);
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76 }
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77 }
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78
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79 void ucx_list_free_content(UcxList* list, ucx_destructor destr) {
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80 while (list != NULL) {
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81 destr(list->data);
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82 list = list->next;
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83 }
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84 }
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85
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86 UcxList *ucx_list_append(UcxList *l, void *data) {
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87 return ucx_list_append_a(ucx_default_allocator(), l, data);
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88 }
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89
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90 UcxList *ucx_list_append_a(UcxAllocator *alloc, UcxList *l, void *data) {
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91 UcxList *nl = (UcxList*) almalloc(alloc, sizeof(UcxList));
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92 if (!nl) {
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93 return NULL;
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94 }
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95
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96 nl->data = data;
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97 nl->next = NULL;
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98 if (l) {
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99 UcxList *t = ucx_list_last(l);
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100 t->next = nl;
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101 nl->prev = t;
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102 return l;
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103 } else {
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104 nl->prev = NULL;
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105 return nl;
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106 }
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107 }
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108
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109 UcxList *ucx_list_prepend(UcxList *l, void *data) {
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110 return ucx_list_prepend_a(ucx_default_allocator(), l, data);
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111 }
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112
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113 UcxList *ucx_list_prepend_a(UcxAllocator *alloc, UcxList *l, void *data) {
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114 UcxList *nl = ucx_list_append_a(alloc, NULL, data);
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115 if (!nl) {
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116 return NULL;
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117 }
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118 l = ucx_list_first(l);
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119
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120 if (l) {
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121 nl->next = l;
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122 l->prev = nl;
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123 }
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124 return nl;
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125 }
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126
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127 UcxList *ucx_list_concat(UcxList *l1, UcxList *l2) {
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128 if (l1) {
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129 UcxList *last = ucx_list_last(l1);
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130 last->next = l2;
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131 if (l2) {
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132 l2->prev = last;
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133 }
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134 return l1;
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135 } else {
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136 return l2;
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137 }
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138 }
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139
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140 UcxList *ucx_list_last(const UcxList *l) {
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141 if (l == NULL) return NULL;
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142
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143 const UcxList *e = l;
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144 while (e->next != NULL) {
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145 e = e->next;
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146 }
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147 return (UcxList*)e;
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148 }
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149
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150 ssize_t ucx_list_indexof(const UcxList *list, const UcxList *elem) {
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151 ssize_t index = 0;
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152 while (list) {
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153 if (list == elem) {
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154 return index;
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155 }
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156 list = list->next;
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157 index++;
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158 }
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159 return -1;
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160 }
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161
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162 UcxList *ucx_list_get(const UcxList *l, size_t index) {
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163 if (l == NULL) return NULL;
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164
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165 const UcxList *e = l;
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166 while (e->next && index > 0) {
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167 e = e->next;
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168 index--;
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169 }
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170
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171 return (UcxList*)(index == 0 ? e : NULL);
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172 }
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173
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174 ssize_t ucx_list_find(UcxList *l, void *elem, cmp_func fnc, void *cmpdata) {
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175 ssize_t index = 0;
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176 UCX_FOREACH(e, l) {
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177 if (fnc) {
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178 if (fnc(elem, e->data, cmpdata) == 0) {
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179 return index;
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180 }
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181 } else {
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182 if (elem == e->data) {
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183 return index;
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parents:
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184 }
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185 }
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186 index++;
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187 }
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188 return -1;
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189 }
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190
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191 int ucx_list_contains(UcxList *l, void *elem, cmp_func fnc, void *cmpdata) {
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192 return ucx_list_find(l, elem, fnc, cmpdata) > -1;
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193 }
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194
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195 size_t ucx_list_size(const UcxList *l) {
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196 if (l == NULL) return 0;
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197
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198 const UcxList *e = l;
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199 size_t s = 1;
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200 while (e->next != NULL) {
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201 e = e->next;
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202 s++;
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203 }
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204
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205 return s;
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parents:
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206 }
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207
99
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diff changeset
208 static UcxList *ucx_list_sort_merge(int length,
91
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209 UcxList* restrict ls, UcxList* restrict le, UcxList* restrict re,
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210 cmp_func fnc, void* data) {
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211
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212 UcxList** sorted = (UcxList**) malloc(sizeof(UcxList*)*length);
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213 UcxList *rc, *lc;
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214
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215 lc = ls; rc = le;
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216 int n = 0;
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217 while (lc && lc != le && rc != re) {
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218 if (fnc(lc->data, rc->data, data) <= 0) {
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219 sorted[n] = lc;
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220 lc = lc->next;
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221 } else {
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222 sorted[n] = rc;
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223 rc = rc->next;
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224 }
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225 n++;
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226 }
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diff changeset
227 while (lc && lc != le) {
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228 sorted[n] = lc;
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229 lc = lc->next;
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230 n++;
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231 }
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parents:
diff changeset
232 while (rc && rc != re) {
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233 sorted[n] = rc;
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parents:
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234 rc = rc->next;
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235 n++;
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parents:
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236 }
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parents:
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237
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parents:
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238 // Update pointer
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239 sorted[0]->prev = NULL;
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parents:
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240 for (int i = 0 ; i < length-1 ; i++) {
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241 sorted[i]->next = sorted[i+1];
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242 sorted[i+1]->prev = sorted[i];
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parents:
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243 }
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244 sorted[length-1]->next = NULL;
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245
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246 UcxList *ret = sorted[0];
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parents:
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247 free(sorted);
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parents:
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248 return ret;
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parents:
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249 }
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250
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parents:
diff changeset
251 UcxList *ucx_list_sort(UcxList *l, cmp_func fnc, void *data) {
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252 if (l == NULL) {
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253 return NULL;
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parents:
diff changeset
254 }
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parents:
diff changeset
255
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parents:
diff changeset
256 UcxList *lc;
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parents:
diff changeset
257 int ln = 1;
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parents:
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258
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diff changeset
259 UcxList *restrict ls = l, *restrict le, *restrict re;
99
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diff changeset
260
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parents: 91
diff changeset
261 // check how many elements are already sorted
91
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diff changeset
262 lc = ls;
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parents:
diff changeset
263 while (lc->next != NULL && fnc(lc->next->data, lc->data, data) > 0) {
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parents:
diff changeset
264 lc = lc->next;
fac51f87def0 ucx update
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parents:
diff changeset
265 ln++;
fac51f87def0 ucx update
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parents:
diff changeset
266 }
fac51f87def0 ucx update
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parents:
diff changeset
267 le = lc->next;
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parents:
diff changeset
268
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parents:
diff changeset
269 if (le == NULL) {
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parents:
diff changeset
270 return l; // this list is already sorted :)
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parents:
diff changeset
271 } else {
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parents:
diff changeset
272 UcxList *rc;
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parents:
diff changeset
273 int rn = 1;
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parents:
diff changeset
274 rc = le;
99
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parents: 91
diff changeset
275 // skip already sorted elements
91
fac51f87def0 ucx update
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parents:
diff changeset
276 while (rc->next != NULL && fnc(rc->next->data, rc->data, data) > 0) {
fac51f87def0 ucx update
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parents:
diff changeset
277 rc = rc->next;
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parents:
diff changeset
278 rn++;
fac51f87def0 ucx update
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parents:
diff changeset
279 }
fac51f87def0 ucx update
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parents:
diff changeset
280 re = rc->next;
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parents:
diff changeset
281
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parents:
diff changeset
282 // {ls,...,le->prev} and {rs,...,re->prev} are sorted - merge them
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parents:
diff changeset
283 UcxList *sorted = ucx_list_sort_merge(ln+rn,
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parents:
diff changeset
284 ls, le, re,
fac51f87def0 ucx update
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parents:
diff changeset
285 fnc, data);
99
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parents: 91
diff changeset
286
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parents: 91
diff changeset
287 // Something left? Sort it!
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diff changeset
288 size_t remainder_length = ucx_list_size(re);
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parents: 91
diff changeset
289 if (remainder_length > 0) {
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parents: 91
diff changeset
290 UcxList *remainder = ucx_list_sort(re, fnc, data);
91
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parents:
diff changeset
291
99
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parents: 91
diff changeset
292 // merge sorted list with (also sorted) remainder
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parents: 91
diff changeset
293 l = ucx_list_sort_merge(ln+rn+remainder_length,
b9a6af0ae41a ucx update
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parents: 91
diff changeset
294 sorted, remainder, NULL, fnc, data);
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parents: 91
diff changeset
295 } else {
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parents: 91
diff changeset
296 // no remainder - we've got our sorted list
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diff changeset
297 l = sorted;
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parents: 91
diff changeset
298 }
91
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parents:
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299
fac51f87def0 ucx update
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parents:
diff changeset
300 return l;
fac51f87def0 ucx update
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parents:
diff changeset
301 }
fac51f87def0 ucx update
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parents:
diff changeset
302 }
fac51f87def0 ucx update
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parents:
diff changeset
303
fac51f87def0 ucx update
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parents:
diff changeset
304 UcxList *ucx_list_first(const UcxList *l) {
fac51f87def0 ucx update
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parents:
diff changeset
305 if (!l) {
fac51f87def0 ucx update
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parents:
diff changeset
306 return NULL;
fac51f87def0 ucx update
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parents:
diff changeset
307 }
fac51f87def0 ucx update
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parents:
diff changeset
308
fac51f87def0 ucx update
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parents:
diff changeset
309 const UcxList *e = l;
fac51f87def0 ucx update
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parents:
diff changeset
310 while (e->prev) {
fac51f87def0 ucx update
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parents:
diff changeset
311 e = e->prev;
fac51f87def0 ucx update
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parents:
diff changeset
312 }
fac51f87def0 ucx update
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parents:
diff changeset
313 return (UcxList *)e;
fac51f87def0 ucx update
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parents:
diff changeset
314 }
fac51f87def0 ucx update
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parents:
diff changeset
315
fac51f87def0 ucx update
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parents:
diff changeset
316 UcxList *ucx_list_remove(UcxList *l, UcxList *e) {
fac51f87def0 ucx update
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parents:
diff changeset
317 return ucx_list_remove_a(ucx_default_allocator(), l, e);
fac51f87def0 ucx update
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parents:
diff changeset
318 }
fac51f87def0 ucx update
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parents:
diff changeset
319
fac51f87def0 ucx update
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parents:
diff changeset
320 UcxList *ucx_list_remove_a(UcxAllocator *alloc, UcxList *l, UcxList *e) {
99
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parents: 91
diff changeset
321 if (l == e) {
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parents: 91
diff changeset
322 l = e->next;
b9a6af0ae41a ucx update
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parents: 91
diff changeset
323 }
b9a6af0ae41a ucx update
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parents: 91
diff changeset
324
b9a6af0ae41a ucx update
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parents: 91
diff changeset
325 if (e->next) {
91
fac51f87def0 ucx update
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parents:
diff changeset
326 e->next->prev = e->prev;
fac51f87def0 ucx update
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parents:
diff changeset
327 }
99
b9a6af0ae41a ucx update
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parents: 91
diff changeset
328
b9a6af0ae41a ucx update
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parents: 91
diff changeset
329 if (e->prev) {
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parents: 91
diff changeset
330 e->prev->next = e->next;
b9a6af0ae41a ucx update
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parents: 91
diff changeset
331 }
b9a6af0ae41a ucx update
Olaf Wintermann <olaf.wintermann@gmail.com>
parents: 91
diff changeset
332
b9a6af0ae41a ucx update
Olaf Wintermann <olaf.wintermann@gmail.com>
parents: 91
diff changeset
333 alfree(alloc, e);
91
fac51f87def0 ucx update
Olaf Wintermann <olaf.wintermann@gmail.com>
parents:
diff changeset
334 return l;
fac51f87def0 ucx update
Olaf Wintermann <olaf.wintermann@gmail.com>
parents:
diff changeset
335 }

mercurial