src/ucx/list.c

Fri, 26 Aug 2016 14:15:29 +0200

author
Mike Becker <universe@uap-core.de>
date
Fri, 26 Aug 2016 14:15:29 +0200
changeset 53
5e47a26a16f0
parent 39
ac35daceb24c
permissions
-rw-r--r--

adds appendfile() function to main module + adds TODOs for source files which do not terminate with a blank line

39
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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 2015 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 }
ac35daceb24c adds UCX + changes how the input file is read (uses an consecutive memory area now)
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134 return l1;
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135 } else {
ac35daceb24c adds UCX + changes how the input file is read (uses an consecutive memory area now)
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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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diff changeset
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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diff changeset
153 if (list == elem) {
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154 return index;
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155 }
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diff changeset
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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parents:
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161
ac35daceb24c adds UCX + changes how the input file is read (uses an consecutive memory area now)
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diff changeset
162 UcxList *ucx_list_get(const UcxList *l, size_t index) {
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diff changeset
163 if (l == NULL) return NULL;
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parents:
diff changeset
164
ac35daceb24c adds UCX + changes how the input file is read (uses an consecutive memory area now)
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165 const UcxList *e = l;
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diff changeset
166 while (e->next && index > 0) {
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diff changeset
167 e = e->next;
ac35daceb24c adds UCX + changes how the input file is read (uses an consecutive memory area now)
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diff changeset
168 index--;
ac35daceb24c adds UCX + changes how the input file is read (uses an consecutive memory area now)
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169 }
ac35daceb24c adds UCX + changes how the input file is read (uses an consecutive memory area now)
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170
ac35daceb24c adds UCX + changes how the input file is read (uses an consecutive memory area now)
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diff changeset
171 return (UcxList*)(index == 0 ? e : NULL);
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172 }
ac35daceb24c adds UCX + changes how the input file is read (uses an consecutive memory area now)
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173
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diff changeset
174 ssize_t ucx_list_find(UcxList *l, void *elem, cmp_func fnc, void *cmpdata) {
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diff changeset
175 ssize_t index = 0;
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diff changeset
176 UCX_FOREACH(e, l) {
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diff changeset
177 if (fnc) {
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diff changeset
178 if (fnc(elem, e->data, cmpdata) == 0) {
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179 return index;
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diff changeset
180 }
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parents:
diff changeset
181 } else {
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parents:
diff changeset
182 if (elem == e->data) {
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diff changeset
183 return index;
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184 }
ac35daceb24c adds UCX + changes how the input file is read (uses an consecutive memory area now)
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parents:
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185 }
ac35daceb24c adds UCX + changes how the input file is read (uses an consecutive memory area now)
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parents:
diff changeset
186 index++;
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diff changeset
187 }
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diff changeset
188 return -1;
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parents:
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189 }
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parents:
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190
ac35daceb24c adds UCX + changes how the input file is read (uses an consecutive memory area now)
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parents:
diff changeset
191 int ucx_list_contains(UcxList *l, void *elem, cmp_func fnc, void *cmpdata) {
ac35daceb24c adds UCX + changes how the input file is read (uses an consecutive memory area now)
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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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diff changeset
195 size_t ucx_list_size(const UcxList *l) {
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diff changeset
196 if (l == NULL) return 0;
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197
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diff changeset
198 const UcxList *e = l;
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diff changeset
199 size_t s = 1;
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diff changeset
200 while (e->next != NULL) {
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diff changeset
201 e = e->next;
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diff changeset
202 s++;
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diff changeset
203 }
ac35daceb24c adds UCX + changes how the input file is read (uses an consecutive memory area now)
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diff changeset
204
ac35daceb24c adds UCX + changes how the input file is read (uses an consecutive memory area now)
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diff changeset
205 return s;
ac35daceb24c adds UCX + changes how the input file is read (uses an consecutive memory area now)
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parents:
diff changeset
206 }
ac35daceb24c adds UCX + changes how the input file is read (uses an consecutive memory area now)
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parents:
diff changeset
207
ac35daceb24c adds UCX + changes how the input file is read (uses an consecutive memory area now)
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parents:
diff changeset
208 static UcxList *ucx_list_sort_merge(int length,
ac35daceb24c adds UCX + changes how the input file is read (uses an consecutive memory area now)
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diff changeset
209 UcxList* restrict ls, UcxList* restrict le, UcxList* restrict re,
ac35daceb24c adds UCX + changes how the input file is read (uses an consecutive memory area now)
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diff changeset
210 cmp_func fnc, void* data) {
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211
ac35daceb24c adds UCX + changes how the input file is read (uses an consecutive memory area now)
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diff changeset
212 UcxList** sorted = (UcxList**) malloc(sizeof(UcxList*)*length);
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diff changeset
213 UcxList *rc, *lc;
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diff changeset
214
ac35daceb24c adds UCX + changes how the input file is read (uses an consecutive memory area now)
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diff changeset
215 lc = ls; rc = le;
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parents:
diff changeset
216 int n = 0;
ac35daceb24c adds UCX + changes how the input file is read (uses an consecutive memory area now)
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parents:
diff changeset
217 while (lc && lc != le && rc != re) {
ac35daceb24c adds UCX + changes how the input file is read (uses an consecutive memory area now)
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parents:
diff changeset
218 if (fnc(lc->data, rc->data, data) <= 0) {
ac35daceb24c adds UCX + changes how the input file is read (uses an consecutive memory area now)
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parents:
diff changeset
219 sorted[n] = lc;
ac35daceb24c adds UCX + changes how the input file is read (uses an consecutive memory area now)
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parents:
diff changeset
220 lc = lc->next;
ac35daceb24c adds UCX + changes how the input file is read (uses an consecutive memory area now)
Mike Becker <universe@uap-core.de>
parents:
diff changeset
221 } else {
ac35daceb24c adds UCX + changes how the input file is read (uses an consecutive memory area now)
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diff changeset
222 sorted[n] = rc;
ac35daceb24c adds UCX + changes how the input file is read (uses an consecutive memory area now)
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diff changeset
223 rc = rc->next;
ac35daceb24c adds UCX + changes how the input file is read (uses an consecutive memory area now)
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parents:
diff changeset
224 }
ac35daceb24c adds UCX + changes how the input file is read (uses an consecutive memory area now)
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parents:
diff changeset
225 n++;
ac35daceb24c adds UCX + changes how the input file is read (uses an consecutive memory area now)
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parents:
diff changeset
226 }
ac35daceb24c adds UCX + changes how the input file is read (uses an consecutive memory area now)
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parents:
diff changeset
227 while (lc && lc != le) {
ac35daceb24c adds UCX + changes how the input file is read (uses an consecutive memory area now)
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diff changeset
228 sorted[n] = lc;
ac35daceb24c adds UCX + changes how the input file is read (uses an consecutive memory area now)
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parents:
diff changeset
229 lc = lc->next;
ac35daceb24c adds UCX + changes how the input file is read (uses an consecutive memory area now)
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parents:
diff changeset
230 n++;
ac35daceb24c adds UCX + changes how the input file is read (uses an consecutive memory area now)
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parents:
diff changeset
231 }
ac35daceb24c adds UCX + changes how the input file is read (uses an consecutive memory area now)
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parents:
diff changeset
232 while (rc && rc != re) {
ac35daceb24c adds UCX + changes how the input file is read (uses an consecutive memory area now)
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diff changeset
233 sorted[n] = rc;
ac35daceb24c adds UCX + changes how the input file is read (uses an consecutive memory area now)
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parents:
diff changeset
234 rc = rc->next;
ac35daceb24c adds UCX + changes how the input file is read (uses an consecutive memory area now)
Mike Becker <universe@uap-core.de>
parents:
diff changeset
235 n++;
ac35daceb24c adds UCX + changes how the input file is read (uses an consecutive memory area now)
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parents:
diff changeset
236 }
ac35daceb24c adds UCX + changes how the input file is read (uses an consecutive memory area now)
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parents:
diff changeset
237
ac35daceb24c adds UCX + changes how the input file is read (uses an consecutive memory area now)
Mike Becker <universe@uap-core.de>
parents:
diff changeset
238 // Update pointer
ac35daceb24c adds UCX + changes how the input file is read (uses an consecutive memory area now)
Mike Becker <universe@uap-core.de>
parents:
diff changeset
239 sorted[0]->prev = NULL;
ac35daceb24c adds UCX + changes how the input file is read (uses an consecutive memory area now)
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parents:
diff changeset
240 for (int i = 0 ; i < length-1 ; i++) {
ac35daceb24c adds UCX + changes how the input file is read (uses an consecutive memory area now)
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parents:
diff changeset
241 sorted[i]->next = sorted[i+1];
ac35daceb24c adds UCX + changes how the input file is read (uses an consecutive memory area now)
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parents:
diff changeset
242 sorted[i+1]->prev = sorted[i];
ac35daceb24c adds UCX + changes how the input file is read (uses an consecutive memory area now)
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parents:
diff changeset
243 }
ac35daceb24c adds UCX + changes how the input file is read (uses an consecutive memory area now)
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parents:
diff changeset
244 sorted[length-1]->next = NULL;
ac35daceb24c adds UCX + changes how the input file is read (uses an consecutive memory area now)
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diff changeset
245
ac35daceb24c adds UCX + changes how the input file is read (uses an consecutive memory area now)
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parents:
diff changeset
246 UcxList *ret = sorted[0];
ac35daceb24c adds UCX + changes how the input file is read (uses an consecutive memory area now)
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parents:
diff changeset
247 free(sorted);
ac35daceb24c adds UCX + changes how the input file is read (uses an consecutive memory area now)
Mike Becker <universe@uap-core.de>
parents:
diff changeset
248 return ret;
ac35daceb24c adds UCX + changes how the input file is read (uses an consecutive memory area now)
Mike Becker <universe@uap-core.de>
parents:
diff changeset
249 }
ac35daceb24c adds UCX + changes how the input file is read (uses an consecutive memory area now)
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parents:
diff changeset
250
ac35daceb24c adds UCX + changes how the input file is read (uses an consecutive memory area now)
Mike Becker <universe@uap-core.de>
parents:
diff changeset
251 UcxList *ucx_list_sort(UcxList *l, cmp_func fnc, void *data) {
ac35daceb24c adds UCX + changes how the input file is read (uses an consecutive memory area now)
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parents:
diff changeset
252 if (l == NULL) {
ac35daceb24c adds UCX + changes how the input file is read (uses an consecutive memory area now)
Mike Becker <universe@uap-core.de>
parents:
diff changeset
253 return NULL;
ac35daceb24c adds UCX + changes how the input file is read (uses an consecutive memory area now)
Mike Becker <universe@uap-core.de>
parents:
diff changeset
254 }
ac35daceb24c adds UCX + changes how the input file is read (uses an consecutive memory area now)
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parents:
diff changeset
255
ac35daceb24c adds UCX + changes how the input file is read (uses an consecutive memory area now)
Mike Becker <universe@uap-core.de>
parents:
diff changeset
256 UcxList *lc;
ac35daceb24c adds UCX + changes how the input file is read (uses an consecutive memory area now)
Mike Becker <universe@uap-core.de>
parents:
diff changeset
257 int ln = 1;
ac35daceb24c adds UCX + changes how the input file is read (uses an consecutive memory area now)
Mike Becker <universe@uap-core.de>
parents:
diff changeset
258
ac35daceb24c adds UCX + changes how the input file is read (uses an consecutive memory area now)
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parents:
diff changeset
259 UcxList *restrict ls = l, *restrict le, *restrict re;
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260
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261 // check how many elements are already sorted
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262 lc = ls;
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263 while (lc->next != NULL && fnc(lc->next->data, lc->data, data) > 0) {
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264 lc = lc->next;
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265 ln++;
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266 }
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267 le = lc->next;
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268
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269 if (le == NULL) {
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270 return l; // this list is already sorted :)
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271 } else {
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272 UcxList *rc;
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273 int rn = 1;
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274 rc = le;
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275 // skip already sorted elements
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276 while (rc->next != NULL && fnc(rc->next->data, rc->data, data) > 0) {
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277 rc = rc->next;
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278 rn++;
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279 }
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280 re = rc->next;
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281
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282 // {ls,...,le->prev} and {rs,...,re->prev} are sorted - merge them
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283 UcxList *sorted = ucx_list_sort_merge(ln+rn,
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284 ls, le, re,
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285 fnc, data);
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286
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287 // Something left? Sort it!
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288 size_t remainder_length = ucx_list_size(re);
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289 if (remainder_length > 0) {
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290 UcxList *remainder = ucx_list_sort(re, fnc, data);
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291
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292 // merge sorted list with (also sorted) remainder
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293 l = ucx_list_sort_merge(ln+rn+remainder_length,
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294 sorted, remainder, NULL, fnc, data);
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295 } else {
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296 // no remainder - we've got our sorted list
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297 l = sorted;
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298 }
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299
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300 return l;
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301 }
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302 }
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303
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304 UcxList *ucx_list_first(const UcxList *l) {
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305 if (!l) {
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306 return NULL;
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307 }
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308
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309 const UcxList *e = l;
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310 while (e->prev) {
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311 e = e->prev;
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312 }
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313 return (UcxList *)e;
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314 }
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315
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316 UcxList *ucx_list_remove(UcxList *l, UcxList *e) {
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317 return ucx_list_remove_a(ucx_default_allocator(), l, e);
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318 }
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319
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320 UcxList *ucx_list_remove_a(UcxAllocator *alloc, UcxList *l, UcxList *e) {
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321 if (l == e) {
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322 l = e->next;
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323 }
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324
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325 if (e->next) {
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326 e->next->prev = e->prev;
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327 }
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328
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329 if (e->prev) {
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330 e->prev->next = e->next;
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331 }
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332
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333 alfree(alloc, e);
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334 return l;
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335 }

mercurial