ucx/hash_map.c

Wed, 19 Jul 2023 20:47:10 +0200

author
Olaf Wintermann <olaf.wintermann@gmail.com>
date
Wed, 19 Jul 2023 20:47:10 +0200
changeset 780
cd1c869720e0
parent 750
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child 816
839fefbdedc7
permissions
-rw-r--r--

remove loglevel parameter from log_printf

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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/hash_map.h"
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30 #include "cx/utils.h"
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31
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32 #include <string.h>
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33 #include <assert.h>
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34
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35 struct cx_hash_map_element_s {
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36 /** A pointer to the next element in the current bucket. */
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37 struct cx_hash_map_element_s *next;
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38
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39 /** The corresponding key. */
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40 CxHashKey key;
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41
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42 /** The value data. */
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43 char data[];
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44 };
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45
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46 static void cx_hash_map_clear(struct cx_map_s *map) {
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47 struct cx_hash_map_s *hash_map = (struct cx_hash_map_s *) map;
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48 cx_for_n(i, hash_map->bucket_count) {
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49 struct cx_hash_map_element_s *elem = hash_map->buckets[i];
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50 if (elem != NULL) {
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51 do {
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52 struct cx_hash_map_element_s *next = elem->next;
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53 // invoke the destructor
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54 cx_invoke_destructor(map, elem->data);
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55 // free the key data
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56 cxFree(map->allocator, (void *) elem->key.data);
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57 // free the node
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58 cxFree(map->allocator, elem);
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59 // proceed
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60 elem = next;
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61 } while (elem != NULL);
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62
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63 // do not leave a dangling pointer
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64 hash_map->buckets[i] = NULL;
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65 }
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66 }
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67 map->size = 0;
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68 }
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69
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70 static void cx_hash_map_destructor(struct cx_map_s *map) {
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71 struct cx_hash_map_s *hash_map = (struct cx_hash_map_s *) map;
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72
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73 // free the buckets
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74 cx_hash_map_clear(map);
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75 cxFree(map->allocator, hash_map->buckets);
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76
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77 // free the map structure
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78 cxFree(map->allocator, map);
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79 }
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80
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81 static int cx_hash_map_put(
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82 CxMap *map,
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83 CxHashKey key,
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84 void *value
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85 ) {
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86 struct cx_hash_map_s *hash_map = (struct cx_hash_map_s *) map;
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87 CxAllocator const *allocator = map->allocator;
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88
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89 unsigned hash = key.hash;
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90 if (hash == 0) {
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91 cx_hash_murmur(&key);
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92 hash = key.hash;
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93 }
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94
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95 size_t slot = hash % hash_map->bucket_count;
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96 struct cx_hash_map_element_s *elm = hash_map->buckets[slot];
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97 struct cx_hash_map_element_s *prev = NULL;
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98
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99 while (elm != NULL && elm->key.hash < hash) {
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100 prev = elm;
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101 elm = elm->next;
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102 }
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103
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104 if (elm != NULL && elm->key.hash == hash && elm->key.len == key.len &&
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105 memcmp(elm->key.data, key.data, key.len) == 0) {
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106 // overwrite existing element
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107 if (map->store_pointer) {
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108 memcpy(elm->data, &value, sizeof(void *));
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109 } else {
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110 memcpy(elm->data, value, map->item_size);
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111 }
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112 } else {
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113 // allocate new element
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114 struct cx_hash_map_element_s *e = cxMalloc(
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115 allocator,
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116 sizeof(struct cx_hash_map_element_s) + map->item_size
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117 );
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118 if (e == NULL) {
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119 return -1;
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120 }
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121
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122 // write the value
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123 if (map->store_pointer) {
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124 memcpy(e->data, &value, sizeof(void *));
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125 } else {
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126 memcpy(e->data, value, map->item_size);
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127 }
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128
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129 // copy the key
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130 void *kd = cxMalloc(allocator, key.len);
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131 if (kd == NULL) {
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parents:
diff changeset
132 return -1;
efbd59642577 ucx 3 update, basic dav commands work, most stuff is still broken
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parents:
diff changeset
133 }
efbd59642577 ucx 3 update, basic dav commands work, most stuff is still broken
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parents:
diff changeset
134 memcpy(kd, key.data, key.len);
efbd59642577 ucx 3 update, basic dav commands work, most stuff is still broken
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parents:
diff changeset
135 e->key.data = kd;
efbd59642577 ucx 3 update, basic dav commands work, most stuff is still broken
Olaf Wintermann <olaf.wintermann@gmail.com>
parents:
diff changeset
136 e->key.len = key.len;
efbd59642577 ucx 3 update, basic dav commands work, most stuff is still broken
Olaf Wintermann <olaf.wintermann@gmail.com>
parents:
diff changeset
137 e->key.hash = hash;
efbd59642577 ucx 3 update, basic dav commands work, most stuff is still broken
Olaf Wintermann <olaf.wintermann@gmail.com>
parents:
diff changeset
138
efbd59642577 ucx 3 update, basic dav commands work, most stuff is still broken
Olaf Wintermann <olaf.wintermann@gmail.com>
parents:
diff changeset
139 // insert the element into the linked list
efbd59642577 ucx 3 update, basic dav commands work, most stuff is still broken
Olaf Wintermann <olaf.wintermann@gmail.com>
parents:
diff changeset
140 if (prev == NULL) {
efbd59642577 ucx 3 update, basic dav commands work, most stuff is still broken
Olaf Wintermann <olaf.wintermann@gmail.com>
parents:
diff changeset
141 hash_map->buckets[slot] = e;
efbd59642577 ucx 3 update, basic dav commands work, most stuff is still broken
Olaf Wintermann <olaf.wintermann@gmail.com>
parents:
diff changeset
142 } else {
efbd59642577 ucx 3 update, basic dav commands work, most stuff is still broken
Olaf Wintermann <olaf.wintermann@gmail.com>
parents:
diff changeset
143 prev->next = e;
efbd59642577 ucx 3 update, basic dav commands work, most stuff is still broken
Olaf Wintermann <olaf.wintermann@gmail.com>
parents:
diff changeset
144 }
efbd59642577 ucx 3 update, basic dav commands work, most stuff is still broken
Olaf Wintermann <olaf.wintermann@gmail.com>
parents:
diff changeset
145 e->next = elm;
efbd59642577 ucx 3 update, basic dav commands work, most stuff is still broken
Olaf Wintermann <olaf.wintermann@gmail.com>
parents:
diff changeset
146
efbd59642577 ucx 3 update, basic dav commands work, most stuff is still broken
Olaf Wintermann <olaf.wintermann@gmail.com>
parents:
diff changeset
147 // increase the size
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parents:
diff changeset
148 map->size++;
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parents:
diff changeset
149 }
efbd59642577 ucx 3 update, basic dav commands work, most stuff is still broken
Olaf Wintermann <olaf.wintermann@gmail.com>
parents:
diff changeset
150
efbd59642577 ucx 3 update, basic dav commands work, most stuff is still broken
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parents:
diff changeset
151 return 0;
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parents:
diff changeset
152 }
efbd59642577 ucx 3 update, basic dav commands work, most stuff is still broken
Olaf Wintermann <olaf.wintermann@gmail.com>
parents:
diff changeset
153
efbd59642577 ucx 3 update, basic dav commands work, most stuff is still broken
Olaf Wintermann <olaf.wintermann@gmail.com>
parents:
diff changeset
154 static void cx_hash_map_unlink(
efbd59642577 ucx 3 update, basic dav commands work, most stuff is still broken
Olaf Wintermann <olaf.wintermann@gmail.com>
parents:
diff changeset
155 struct cx_hash_map_s *hash_map,
efbd59642577 ucx 3 update, basic dav commands work, most stuff is still broken
Olaf Wintermann <olaf.wintermann@gmail.com>
parents:
diff changeset
156 size_t slot,
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parents:
diff changeset
157 struct cx_hash_map_element_s *prev,
efbd59642577 ucx 3 update, basic dav commands work, most stuff is still broken
Olaf Wintermann <olaf.wintermann@gmail.com>
parents:
diff changeset
158 struct cx_hash_map_element_s *elm
efbd59642577 ucx 3 update, basic dav commands work, most stuff is still broken
Olaf Wintermann <olaf.wintermann@gmail.com>
parents:
diff changeset
159 ) {
efbd59642577 ucx 3 update, basic dav commands work, most stuff is still broken
Olaf Wintermann <olaf.wintermann@gmail.com>
parents:
diff changeset
160 // unlink
efbd59642577 ucx 3 update, basic dav commands work, most stuff is still broken
Olaf Wintermann <olaf.wintermann@gmail.com>
parents:
diff changeset
161 if (prev == NULL) {
efbd59642577 ucx 3 update, basic dav commands work, most stuff is still broken
Olaf Wintermann <olaf.wintermann@gmail.com>
parents:
diff changeset
162 hash_map->buckets[slot] = elm->next;
efbd59642577 ucx 3 update, basic dav commands work, most stuff is still broken
Olaf Wintermann <olaf.wintermann@gmail.com>
parents:
diff changeset
163 } else {
efbd59642577 ucx 3 update, basic dav commands work, most stuff is still broken
Olaf Wintermann <olaf.wintermann@gmail.com>
parents:
diff changeset
164 prev->next = elm->next;
efbd59642577 ucx 3 update, basic dav commands work, most stuff is still broken
Olaf Wintermann <olaf.wintermann@gmail.com>
parents:
diff changeset
165 }
efbd59642577 ucx 3 update, basic dav commands work, most stuff is still broken
Olaf Wintermann <olaf.wintermann@gmail.com>
parents:
diff changeset
166 // free element
efbd59642577 ucx 3 update, basic dav commands work, most stuff is still broken
Olaf Wintermann <olaf.wintermann@gmail.com>
parents:
diff changeset
167 cxFree(hash_map->base.allocator, (void *) elm->key.data);
efbd59642577 ucx 3 update, basic dav commands work, most stuff is still broken
Olaf Wintermann <olaf.wintermann@gmail.com>
parents:
diff changeset
168 cxFree(hash_map->base.allocator, elm);
efbd59642577 ucx 3 update, basic dav commands work, most stuff is still broken
Olaf Wintermann <olaf.wintermann@gmail.com>
parents:
diff changeset
169 // decrease size
efbd59642577 ucx 3 update, basic dav commands work, most stuff is still broken
Olaf Wintermann <olaf.wintermann@gmail.com>
parents:
diff changeset
170 hash_map->base.size--;
efbd59642577 ucx 3 update, basic dav commands work, most stuff is still broken
Olaf Wintermann <olaf.wintermann@gmail.com>
parents:
diff changeset
171 }
efbd59642577 ucx 3 update, basic dav commands work, most stuff is still broken
Olaf Wintermann <olaf.wintermann@gmail.com>
parents:
diff changeset
172
efbd59642577 ucx 3 update, basic dav commands work, most stuff is still broken
Olaf Wintermann <olaf.wintermann@gmail.com>
parents:
diff changeset
173 /**
efbd59642577 ucx 3 update, basic dav commands work, most stuff is still broken
Olaf Wintermann <olaf.wintermann@gmail.com>
parents:
diff changeset
174 * Helper function to avoid code duplication.
efbd59642577 ucx 3 update, basic dav commands work, most stuff is still broken
Olaf Wintermann <olaf.wintermann@gmail.com>
parents:
diff changeset
175 *
efbd59642577 ucx 3 update, basic dav commands work, most stuff is still broken
Olaf Wintermann <olaf.wintermann@gmail.com>
parents:
diff changeset
176 * @param map the map
efbd59642577 ucx 3 update, basic dav commands work, most stuff is still broken
Olaf Wintermann <olaf.wintermann@gmail.com>
parents:
diff changeset
177 * @param key the key to look up
efbd59642577 ucx 3 update, basic dav commands work, most stuff is still broken
Olaf Wintermann <olaf.wintermann@gmail.com>
parents:
diff changeset
178 * @param remove flag indicating whether the looked up entry shall be removed
efbd59642577 ucx 3 update, basic dav commands work, most stuff is still broken
Olaf Wintermann <olaf.wintermann@gmail.com>
parents:
diff changeset
179 * @param destroy flag indicating whether the destructor shall be invoked
efbd59642577 ucx 3 update, basic dav commands work, most stuff is still broken
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parents:
diff changeset
180 * @return a pointer to the value corresponding to the key or \c NULL
efbd59642577 ucx 3 update, basic dav commands work, most stuff is still broken
Olaf Wintermann <olaf.wintermann@gmail.com>
parents:
diff changeset
181 */
efbd59642577 ucx 3 update, basic dav commands work, most stuff is still broken
Olaf Wintermann <olaf.wintermann@gmail.com>
parents:
diff changeset
182 static void *cx_hash_map_get_remove(
efbd59642577 ucx 3 update, basic dav commands work, most stuff is still broken
Olaf Wintermann <olaf.wintermann@gmail.com>
parents:
diff changeset
183 CxMap *map,
efbd59642577 ucx 3 update, basic dav commands work, most stuff is still broken
Olaf Wintermann <olaf.wintermann@gmail.com>
parents:
diff changeset
184 CxHashKey key,
efbd59642577 ucx 3 update, basic dav commands work, most stuff is still broken
Olaf Wintermann <olaf.wintermann@gmail.com>
parents:
diff changeset
185 bool remove,
efbd59642577 ucx 3 update, basic dav commands work, most stuff is still broken
Olaf Wintermann <olaf.wintermann@gmail.com>
parents:
diff changeset
186 bool destroy
efbd59642577 ucx 3 update, basic dav commands work, most stuff is still broken
Olaf Wintermann <olaf.wintermann@gmail.com>
parents:
diff changeset
187 ) {
efbd59642577 ucx 3 update, basic dav commands work, most stuff is still broken
Olaf Wintermann <olaf.wintermann@gmail.com>
parents:
diff changeset
188 struct cx_hash_map_s *hash_map = (struct cx_hash_map_s *) map;
efbd59642577 ucx 3 update, basic dav commands work, most stuff is still broken
Olaf Wintermann <olaf.wintermann@gmail.com>
parents:
diff changeset
189
efbd59642577 ucx 3 update, basic dav commands work, most stuff is still broken
Olaf Wintermann <olaf.wintermann@gmail.com>
parents:
diff changeset
190 unsigned hash = key.hash;
efbd59642577 ucx 3 update, basic dav commands work, most stuff is still broken
Olaf Wintermann <olaf.wintermann@gmail.com>
parents:
diff changeset
191 if (hash == 0) {
efbd59642577 ucx 3 update, basic dav commands work, most stuff is still broken
Olaf Wintermann <olaf.wintermann@gmail.com>
parents:
diff changeset
192 cx_hash_murmur(&key);
efbd59642577 ucx 3 update, basic dav commands work, most stuff is still broken
Olaf Wintermann <olaf.wintermann@gmail.com>
parents:
diff changeset
193 hash = key.hash;
efbd59642577 ucx 3 update, basic dav commands work, most stuff is still broken
Olaf Wintermann <olaf.wintermann@gmail.com>
parents:
diff changeset
194 }
efbd59642577 ucx 3 update, basic dav commands work, most stuff is still broken
Olaf Wintermann <olaf.wintermann@gmail.com>
parents:
diff changeset
195
efbd59642577 ucx 3 update, basic dav commands work, most stuff is still broken
Olaf Wintermann <olaf.wintermann@gmail.com>
parents:
diff changeset
196 size_t slot = hash % hash_map->bucket_count;
efbd59642577 ucx 3 update, basic dav commands work, most stuff is still broken
Olaf Wintermann <olaf.wintermann@gmail.com>
parents:
diff changeset
197 struct cx_hash_map_element_s *elm = hash_map->buckets[slot];
efbd59642577 ucx 3 update, basic dav commands work, most stuff is still broken
Olaf Wintermann <olaf.wintermann@gmail.com>
parents:
diff changeset
198 struct cx_hash_map_element_s *prev = NULL;
efbd59642577 ucx 3 update, basic dav commands work, most stuff is still broken
Olaf Wintermann <olaf.wintermann@gmail.com>
parents:
diff changeset
199 while (elm && elm->key.hash <= hash) {
efbd59642577 ucx 3 update, basic dav commands work, most stuff is still broken
Olaf Wintermann <olaf.wintermann@gmail.com>
parents:
diff changeset
200 if (elm->key.hash == hash && elm->key.len == key.len) {
efbd59642577 ucx 3 update, basic dav commands work, most stuff is still broken
Olaf Wintermann <olaf.wintermann@gmail.com>
parents:
diff changeset
201 if (memcmp(elm->key.data, key.data, key.len) == 0) {
efbd59642577 ucx 3 update, basic dav commands work, most stuff is still broken
Olaf Wintermann <olaf.wintermann@gmail.com>
parents:
diff changeset
202 void *data = NULL;
efbd59642577 ucx 3 update, basic dav commands work, most stuff is still broken
Olaf Wintermann <olaf.wintermann@gmail.com>
parents:
diff changeset
203 if (destroy) {
efbd59642577 ucx 3 update, basic dav commands work, most stuff is still broken
Olaf Wintermann <olaf.wintermann@gmail.com>
parents:
diff changeset
204 cx_invoke_destructor(map, elm->data);
efbd59642577 ucx 3 update, basic dav commands work, most stuff is still broken
Olaf Wintermann <olaf.wintermann@gmail.com>
parents:
diff changeset
205 } else {
efbd59642577 ucx 3 update, basic dav commands work, most stuff is still broken
Olaf Wintermann <olaf.wintermann@gmail.com>
parents:
diff changeset
206 if (map->store_pointer) {
efbd59642577 ucx 3 update, basic dav commands work, most stuff is still broken
Olaf Wintermann <olaf.wintermann@gmail.com>
parents:
diff changeset
207 data = *(void **) elm->data;
efbd59642577 ucx 3 update, basic dav commands work, most stuff is still broken
Olaf Wintermann <olaf.wintermann@gmail.com>
parents:
diff changeset
208 } else {
efbd59642577 ucx 3 update, basic dav commands work, most stuff is still broken
Olaf Wintermann <olaf.wintermann@gmail.com>
parents:
diff changeset
209 data = elm->data;
efbd59642577 ucx 3 update, basic dav commands work, most stuff is still broken
Olaf Wintermann <olaf.wintermann@gmail.com>
parents:
diff changeset
210 }
efbd59642577 ucx 3 update, basic dav commands work, most stuff is still broken
Olaf Wintermann <olaf.wintermann@gmail.com>
parents:
diff changeset
211 }
efbd59642577 ucx 3 update, basic dav commands work, most stuff is still broken
Olaf Wintermann <olaf.wintermann@gmail.com>
parents:
diff changeset
212 if (remove) {
efbd59642577 ucx 3 update, basic dav commands work, most stuff is still broken
Olaf Wintermann <olaf.wintermann@gmail.com>
parents:
diff changeset
213 cx_hash_map_unlink(hash_map, slot, prev, elm);
efbd59642577 ucx 3 update, basic dav commands work, most stuff is still broken
Olaf Wintermann <olaf.wintermann@gmail.com>
parents:
diff changeset
214 }
efbd59642577 ucx 3 update, basic dav commands work, most stuff is still broken
Olaf Wintermann <olaf.wintermann@gmail.com>
parents:
diff changeset
215 return data;
efbd59642577 ucx 3 update, basic dav commands work, most stuff is still broken
Olaf Wintermann <olaf.wintermann@gmail.com>
parents:
diff changeset
216 }
efbd59642577 ucx 3 update, basic dav commands work, most stuff is still broken
Olaf Wintermann <olaf.wintermann@gmail.com>
parents:
diff changeset
217 }
efbd59642577 ucx 3 update, basic dav commands work, most stuff is still broken
Olaf Wintermann <olaf.wintermann@gmail.com>
parents:
diff changeset
218 prev = elm;
efbd59642577 ucx 3 update, basic dav commands work, most stuff is still broken
Olaf Wintermann <olaf.wintermann@gmail.com>
parents:
diff changeset
219 elm = prev->next;
efbd59642577 ucx 3 update, basic dav commands work, most stuff is still broken
Olaf Wintermann <olaf.wintermann@gmail.com>
parents:
diff changeset
220 }
efbd59642577 ucx 3 update, basic dav commands work, most stuff is still broken
Olaf Wintermann <olaf.wintermann@gmail.com>
parents:
diff changeset
221
efbd59642577 ucx 3 update, basic dav commands work, most stuff is still broken
Olaf Wintermann <olaf.wintermann@gmail.com>
parents:
diff changeset
222 return NULL;
efbd59642577 ucx 3 update, basic dav commands work, most stuff is still broken
Olaf Wintermann <olaf.wintermann@gmail.com>
parents:
diff changeset
223 }
efbd59642577 ucx 3 update, basic dav commands work, most stuff is still broken
Olaf Wintermann <olaf.wintermann@gmail.com>
parents:
diff changeset
224
efbd59642577 ucx 3 update, basic dav commands work, most stuff is still broken
Olaf Wintermann <olaf.wintermann@gmail.com>
parents:
diff changeset
225 static void *cx_hash_map_get(
efbd59642577 ucx 3 update, basic dav commands work, most stuff is still broken
Olaf Wintermann <olaf.wintermann@gmail.com>
parents:
diff changeset
226 CxMap const *map,
efbd59642577 ucx 3 update, basic dav commands work, most stuff is still broken
Olaf Wintermann <olaf.wintermann@gmail.com>
parents:
diff changeset
227 CxHashKey key
efbd59642577 ucx 3 update, basic dav commands work, most stuff is still broken
Olaf Wintermann <olaf.wintermann@gmail.com>
parents:
diff changeset
228 ) {
efbd59642577 ucx 3 update, basic dav commands work, most stuff is still broken
Olaf Wintermann <olaf.wintermann@gmail.com>
parents:
diff changeset
229 // we can safely cast, because we know the map stays untouched
efbd59642577 ucx 3 update, basic dav commands work, most stuff is still broken
Olaf Wintermann <olaf.wintermann@gmail.com>
parents:
diff changeset
230 return cx_hash_map_get_remove((CxMap *) map, key, false, false);
efbd59642577 ucx 3 update, basic dav commands work, most stuff is still broken
Olaf Wintermann <olaf.wintermann@gmail.com>
parents:
diff changeset
231 }
efbd59642577 ucx 3 update, basic dav commands work, most stuff is still broken
Olaf Wintermann <olaf.wintermann@gmail.com>
parents:
diff changeset
232
efbd59642577 ucx 3 update, basic dav commands work, most stuff is still broken
Olaf Wintermann <olaf.wintermann@gmail.com>
parents:
diff changeset
233 static void *cx_hash_map_remove(
efbd59642577 ucx 3 update, basic dav commands work, most stuff is still broken
Olaf Wintermann <olaf.wintermann@gmail.com>
parents:
diff changeset
234 CxMap *map,
efbd59642577 ucx 3 update, basic dav commands work, most stuff is still broken
Olaf Wintermann <olaf.wintermann@gmail.com>
parents:
diff changeset
235 CxHashKey key,
efbd59642577 ucx 3 update, basic dav commands work, most stuff is still broken
Olaf Wintermann <olaf.wintermann@gmail.com>
parents:
diff changeset
236 bool destroy
efbd59642577 ucx 3 update, basic dav commands work, most stuff is still broken
Olaf Wintermann <olaf.wintermann@gmail.com>
parents:
diff changeset
237 ) {
efbd59642577 ucx 3 update, basic dav commands work, most stuff is still broken
Olaf Wintermann <olaf.wintermann@gmail.com>
parents:
diff changeset
238 return cx_hash_map_get_remove(map, key, true, destroy);
efbd59642577 ucx 3 update, basic dav commands work, most stuff is still broken
Olaf Wintermann <olaf.wintermann@gmail.com>
parents:
diff changeset
239 }
efbd59642577 ucx 3 update, basic dav commands work, most stuff is still broken
Olaf Wintermann <olaf.wintermann@gmail.com>
parents:
diff changeset
240
efbd59642577 ucx 3 update, basic dav commands work, most stuff is still broken
Olaf Wintermann <olaf.wintermann@gmail.com>
parents:
diff changeset
241 static void *cx_hash_map_iter_current_entry(void const *it) {
efbd59642577 ucx 3 update, basic dav commands work, most stuff is still broken
Olaf Wintermann <olaf.wintermann@gmail.com>
parents:
diff changeset
242 struct cx_iterator_s const *iter = it;
efbd59642577 ucx 3 update, basic dav commands work, most stuff is still broken
Olaf Wintermann <olaf.wintermann@gmail.com>
parents:
diff changeset
243 // struct has to have a compatible signature
efbd59642577 ucx 3 update, basic dav commands work, most stuff is still broken
Olaf Wintermann <olaf.wintermann@gmail.com>
parents:
diff changeset
244 return (struct cx_map_entry_s *) &(iter->kv_data);
efbd59642577 ucx 3 update, basic dav commands work, most stuff is still broken
Olaf Wintermann <olaf.wintermann@gmail.com>
parents:
diff changeset
245 }
efbd59642577 ucx 3 update, basic dav commands work, most stuff is still broken
Olaf Wintermann <olaf.wintermann@gmail.com>
parents:
diff changeset
246
efbd59642577 ucx 3 update, basic dav commands work, most stuff is still broken
Olaf Wintermann <olaf.wintermann@gmail.com>
parents:
diff changeset
247 static void *cx_hash_map_iter_current_key(void const *it) {
efbd59642577 ucx 3 update, basic dav commands work, most stuff is still broken
Olaf Wintermann <olaf.wintermann@gmail.com>
parents:
diff changeset
248 struct cx_iterator_s const *iter = it;
efbd59642577 ucx 3 update, basic dav commands work, most stuff is still broken
Olaf Wintermann <olaf.wintermann@gmail.com>
parents:
diff changeset
249 struct cx_hash_map_element_s *elm = iter->elem_handle;
efbd59642577 ucx 3 update, basic dav commands work, most stuff is still broken
Olaf Wintermann <olaf.wintermann@gmail.com>
parents:
diff changeset
250 return &elm->key;
efbd59642577 ucx 3 update, basic dav commands work, most stuff is still broken
Olaf Wintermann <olaf.wintermann@gmail.com>
parents:
diff changeset
251 }
efbd59642577 ucx 3 update, basic dav commands work, most stuff is still broken
Olaf Wintermann <olaf.wintermann@gmail.com>
parents:
diff changeset
252
efbd59642577 ucx 3 update, basic dav commands work, most stuff is still broken
Olaf Wintermann <olaf.wintermann@gmail.com>
parents:
diff changeset
253 static void *cx_hash_map_iter_current_value(void const *it) {
efbd59642577 ucx 3 update, basic dav commands work, most stuff is still broken
Olaf Wintermann <olaf.wintermann@gmail.com>
parents:
diff changeset
254 struct cx_iterator_s const *iter = it;
efbd59642577 ucx 3 update, basic dav commands work, most stuff is still broken
Olaf Wintermann <olaf.wintermann@gmail.com>
parents:
diff changeset
255 struct cx_hash_map_s const *map = iter->src_handle;
efbd59642577 ucx 3 update, basic dav commands work, most stuff is still broken
Olaf Wintermann <olaf.wintermann@gmail.com>
parents:
diff changeset
256 struct cx_hash_map_element_s *elm = iter->elem_handle;
efbd59642577 ucx 3 update, basic dav commands work, most stuff is still broken
Olaf Wintermann <olaf.wintermann@gmail.com>
parents:
diff changeset
257 if (map->base.store_pointer) {
efbd59642577 ucx 3 update, basic dav commands work, most stuff is still broken
Olaf Wintermann <olaf.wintermann@gmail.com>
parents:
diff changeset
258 return *(void **) elm->data;
efbd59642577 ucx 3 update, basic dav commands work, most stuff is still broken
Olaf Wintermann <olaf.wintermann@gmail.com>
parents:
diff changeset
259 } else {
efbd59642577 ucx 3 update, basic dav commands work, most stuff is still broken
Olaf Wintermann <olaf.wintermann@gmail.com>
parents:
diff changeset
260 return elm->data;
efbd59642577 ucx 3 update, basic dav commands work, most stuff is still broken
Olaf Wintermann <olaf.wintermann@gmail.com>
parents:
diff changeset
261 }
efbd59642577 ucx 3 update, basic dav commands work, most stuff is still broken
Olaf Wintermann <olaf.wintermann@gmail.com>
parents:
diff changeset
262 }
efbd59642577 ucx 3 update, basic dav commands work, most stuff is still broken
Olaf Wintermann <olaf.wintermann@gmail.com>
parents:
diff changeset
263
efbd59642577 ucx 3 update, basic dav commands work, most stuff is still broken
Olaf Wintermann <olaf.wintermann@gmail.com>
parents:
diff changeset
264 static bool cx_hash_map_iter_valid(void const *it) {
efbd59642577 ucx 3 update, basic dav commands work, most stuff is still broken
Olaf Wintermann <olaf.wintermann@gmail.com>
parents:
diff changeset
265 struct cx_iterator_s const *iter = it;
efbd59642577 ucx 3 update, basic dav commands work, most stuff is still broken
Olaf Wintermann <olaf.wintermann@gmail.com>
parents:
diff changeset
266 return iter->elem_handle != NULL;
efbd59642577 ucx 3 update, basic dav commands work, most stuff is still broken
Olaf Wintermann <olaf.wintermann@gmail.com>
parents:
diff changeset
267 }
efbd59642577 ucx 3 update, basic dav commands work, most stuff is still broken
Olaf Wintermann <olaf.wintermann@gmail.com>
parents:
diff changeset
268
efbd59642577 ucx 3 update, basic dav commands work, most stuff is still broken
Olaf Wintermann <olaf.wintermann@gmail.com>
parents:
diff changeset
269 static void cx_hash_map_iter_next(void *it) {
efbd59642577 ucx 3 update, basic dav commands work, most stuff is still broken
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parents:
diff changeset
270 struct cx_iterator_s *iter = it;
efbd59642577 ucx 3 update, basic dav commands work, most stuff is still broken
Olaf Wintermann <olaf.wintermann@gmail.com>
parents:
diff changeset
271 struct cx_hash_map_element_s *elm = iter->elem_handle;
efbd59642577 ucx 3 update, basic dav commands work, most stuff is still broken
Olaf Wintermann <olaf.wintermann@gmail.com>
parents:
diff changeset
272
efbd59642577 ucx 3 update, basic dav commands work, most stuff is still broken
Olaf Wintermann <olaf.wintermann@gmail.com>
parents:
diff changeset
273 // remove current element, if asked
efbd59642577 ucx 3 update, basic dav commands work, most stuff is still broken
Olaf Wintermann <olaf.wintermann@gmail.com>
parents:
diff changeset
274 if (iter->base.remove) {
efbd59642577 ucx 3 update, basic dav commands work, most stuff is still broken
Olaf Wintermann <olaf.wintermann@gmail.com>
parents:
diff changeset
275 // obtain mutable pointer to the map
efbd59642577 ucx 3 update, basic dav commands work, most stuff is still broken
Olaf Wintermann <olaf.wintermann@gmail.com>
parents:
diff changeset
276 struct cx_mut_iterator_s *miter = it;
efbd59642577 ucx 3 update, basic dav commands work, most stuff is still broken
Olaf Wintermann <olaf.wintermann@gmail.com>
parents:
diff changeset
277 struct cx_hash_map_s *map = miter->src_handle;
efbd59642577 ucx 3 update, basic dav commands work, most stuff is still broken
Olaf Wintermann <olaf.wintermann@gmail.com>
parents:
diff changeset
278
efbd59642577 ucx 3 update, basic dav commands work, most stuff is still broken
Olaf Wintermann <olaf.wintermann@gmail.com>
parents:
diff changeset
279 // clear the flag
efbd59642577 ucx 3 update, basic dav commands work, most stuff is still broken
Olaf Wintermann <olaf.wintermann@gmail.com>
parents:
diff changeset
280 iter->base.remove = false;
efbd59642577 ucx 3 update, basic dav commands work, most stuff is still broken
Olaf Wintermann <olaf.wintermann@gmail.com>
parents:
diff changeset
281
efbd59642577 ucx 3 update, basic dav commands work, most stuff is still broken
Olaf Wintermann <olaf.wintermann@gmail.com>
parents:
diff changeset
282 // determine the next element
efbd59642577 ucx 3 update, basic dav commands work, most stuff is still broken
Olaf Wintermann <olaf.wintermann@gmail.com>
parents:
diff changeset
283 struct cx_hash_map_element_s *next = elm->next;
efbd59642577 ucx 3 update, basic dav commands work, most stuff is still broken
Olaf Wintermann <olaf.wintermann@gmail.com>
parents:
diff changeset
284
efbd59642577 ucx 3 update, basic dav commands work, most stuff is still broken
Olaf Wintermann <olaf.wintermann@gmail.com>
parents:
diff changeset
285 // search the previous element
efbd59642577 ucx 3 update, basic dav commands work, most stuff is still broken
Olaf Wintermann <olaf.wintermann@gmail.com>
parents:
diff changeset
286 struct cx_hash_map_element_s *prev = NULL;
efbd59642577 ucx 3 update, basic dav commands work, most stuff is still broken
Olaf Wintermann <olaf.wintermann@gmail.com>
parents:
diff changeset
287 if (map->buckets[iter->slot] != elm) {
efbd59642577 ucx 3 update, basic dav commands work, most stuff is still broken
Olaf Wintermann <olaf.wintermann@gmail.com>
parents:
diff changeset
288 prev = map->buckets[iter->slot];
efbd59642577 ucx 3 update, basic dav commands work, most stuff is still broken
Olaf Wintermann <olaf.wintermann@gmail.com>
parents:
diff changeset
289 while (prev->next != elm) {
efbd59642577 ucx 3 update, basic dav commands work, most stuff is still broken
Olaf Wintermann <olaf.wintermann@gmail.com>
parents:
diff changeset
290 prev = prev->next;
efbd59642577 ucx 3 update, basic dav commands work, most stuff is still broken
Olaf Wintermann <olaf.wintermann@gmail.com>
parents:
diff changeset
291 }
efbd59642577 ucx 3 update, basic dav commands work, most stuff is still broken
Olaf Wintermann <olaf.wintermann@gmail.com>
parents:
diff changeset
292 }
efbd59642577 ucx 3 update, basic dav commands work, most stuff is still broken
Olaf Wintermann <olaf.wintermann@gmail.com>
parents:
diff changeset
293
efbd59642577 ucx 3 update, basic dav commands work, most stuff is still broken
Olaf Wintermann <olaf.wintermann@gmail.com>
parents:
diff changeset
294 // destroy
efbd59642577 ucx 3 update, basic dav commands work, most stuff is still broken
Olaf Wintermann <olaf.wintermann@gmail.com>
parents:
diff changeset
295 cx_invoke_destructor((struct cx_map_s *) map, elm->data);
efbd59642577 ucx 3 update, basic dav commands work, most stuff is still broken
Olaf Wintermann <olaf.wintermann@gmail.com>
parents:
diff changeset
296
efbd59642577 ucx 3 update, basic dav commands work, most stuff is still broken
Olaf Wintermann <olaf.wintermann@gmail.com>
parents:
diff changeset
297 // unlink
efbd59642577 ucx 3 update, basic dav commands work, most stuff is still broken
Olaf Wintermann <olaf.wintermann@gmail.com>
parents:
diff changeset
298 cx_hash_map_unlink(map, iter->slot, prev, elm);
efbd59642577 ucx 3 update, basic dav commands work, most stuff is still broken
Olaf Wintermann <olaf.wintermann@gmail.com>
parents:
diff changeset
299
efbd59642577 ucx 3 update, basic dav commands work, most stuff is still broken
Olaf Wintermann <olaf.wintermann@gmail.com>
parents:
diff changeset
300 // advance
efbd59642577 ucx 3 update, basic dav commands work, most stuff is still broken
Olaf Wintermann <olaf.wintermann@gmail.com>
parents:
diff changeset
301 elm = next;
efbd59642577 ucx 3 update, basic dav commands work, most stuff is still broken
Olaf Wintermann <olaf.wintermann@gmail.com>
parents:
diff changeset
302 } else {
efbd59642577 ucx 3 update, basic dav commands work, most stuff is still broken
Olaf Wintermann <olaf.wintermann@gmail.com>
parents:
diff changeset
303 // just advance
efbd59642577 ucx 3 update, basic dav commands work, most stuff is still broken
Olaf Wintermann <olaf.wintermann@gmail.com>
parents:
diff changeset
304 elm = elm->next;
efbd59642577 ucx 3 update, basic dav commands work, most stuff is still broken
Olaf Wintermann <olaf.wintermann@gmail.com>
parents:
diff changeset
305 iter->index++;
efbd59642577 ucx 3 update, basic dav commands work, most stuff is still broken
Olaf Wintermann <olaf.wintermann@gmail.com>
parents:
diff changeset
306 }
efbd59642577 ucx 3 update, basic dav commands work, most stuff is still broken
Olaf Wintermann <olaf.wintermann@gmail.com>
parents:
diff changeset
307
efbd59642577 ucx 3 update, basic dav commands work, most stuff is still broken
Olaf Wintermann <olaf.wintermann@gmail.com>
parents:
diff changeset
308 // search the next bucket, if required
efbd59642577 ucx 3 update, basic dav commands work, most stuff is still broken
Olaf Wintermann <olaf.wintermann@gmail.com>
parents:
diff changeset
309 struct cx_hash_map_s const *map = iter->src_handle;
efbd59642577 ucx 3 update, basic dav commands work, most stuff is still broken
Olaf Wintermann <olaf.wintermann@gmail.com>
parents:
diff changeset
310 while (elm == NULL && ++iter->slot < map->bucket_count) {
efbd59642577 ucx 3 update, basic dav commands work, most stuff is still broken
Olaf Wintermann <olaf.wintermann@gmail.com>
parents:
diff changeset
311 elm = map->buckets[iter->slot];
efbd59642577 ucx 3 update, basic dav commands work, most stuff is still broken
Olaf Wintermann <olaf.wintermann@gmail.com>
parents:
diff changeset
312 }
efbd59642577 ucx 3 update, basic dav commands work, most stuff is still broken
Olaf Wintermann <olaf.wintermann@gmail.com>
parents:
diff changeset
313
efbd59642577 ucx 3 update, basic dav commands work, most stuff is still broken
Olaf Wintermann <olaf.wintermann@gmail.com>
parents:
diff changeset
314 // fill the struct with the next element
efbd59642577 ucx 3 update, basic dav commands work, most stuff is still broken
Olaf Wintermann <olaf.wintermann@gmail.com>
parents:
diff changeset
315 iter->elem_handle = elm;
efbd59642577 ucx 3 update, basic dav commands work, most stuff is still broken
Olaf Wintermann <olaf.wintermann@gmail.com>
parents:
diff changeset
316 if (elm == NULL) {
efbd59642577 ucx 3 update, basic dav commands work, most stuff is still broken
Olaf Wintermann <olaf.wintermann@gmail.com>
parents:
diff changeset
317 iter->kv_data.key = NULL;
efbd59642577 ucx 3 update, basic dav commands work, most stuff is still broken
Olaf Wintermann <olaf.wintermann@gmail.com>
parents:
diff changeset
318 iter->kv_data.value = NULL;
efbd59642577 ucx 3 update, basic dav commands work, most stuff is still broken
Olaf Wintermann <olaf.wintermann@gmail.com>
parents:
diff changeset
319 } else {
efbd59642577 ucx 3 update, basic dav commands work, most stuff is still broken
Olaf Wintermann <olaf.wintermann@gmail.com>
parents:
diff changeset
320 iter->kv_data.key = &elm->key;
efbd59642577 ucx 3 update, basic dav commands work, most stuff is still broken
Olaf Wintermann <olaf.wintermann@gmail.com>
parents:
diff changeset
321 if (map->base.store_pointer) {
efbd59642577 ucx 3 update, basic dav commands work, most stuff is still broken
Olaf Wintermann <olaf.wintermann@gmail.com>
parents:
diff changeset
322 iter->kv_data.value = *(void **) elm->data;
efbd59642577 ucx 3 update, basic dav commands work, most stuff is still broken
Olaf Wintermann <olaf.wintermann@gmail.com>
parents:
diff changeset
323 } else {
efbd59642577 ucx 3 update, basic dav commands work, most stuff is still broken
Olaf Wintermann <olaf.wintermann@gmail.com>
parents:
diff changeset
324 iter->kv_data.value = elm->data;
efbd59642577 ucx 3 update, basic dav commands work, most stuff is still broken
Olaf Wintermann <olaf.wintermann@gmail.com>
parents:
diff changeset
325 }
efbd59642577 ucx 3 update, basic dav commands work, most stuff is still broken
Olaf Wintermann <olaf.wintermann@gmail.com>
parents:
diff changeset
326 }
efbd59642577 ucx 3 update, basic dav commands work, most stuff is still broken
Olaf Wintermann <olaf.wintermann@gmail.com>
parents:
diff changeset
327 }
efbd59642577 ucx 3 update, basic dav commands work, most stuff is still broken
Olaf Wintermann <olaf.wintermann@gmail.com>
parents:
diff changeset
328
efbd59642577 ucx 3 update, basic dav commands work, most stuff is still broken
Olaf Wintermann <olaf.wintermann@gmail.com>
parents:
diff changeset
329 static bool cx_hash_map_iter_flag_rm(void *it) {
efbd59642577 ucx 3 update, basic dav commands work, most stuff is still broken
Olaf Wintermann <olaf.wintermann@gmail.com>
parents:
diff changeset
330 struct cx_iterator_base_s *iter = it;
efbd59642577 ucx 3 update, basic dav commands work, most stuff is still broken
Olaf Wintermann <olaf.wintermann@gmail.com>
parents:
diff changeset
331 if (iter->mutating) {
efbd59642577 ucx 3 update, basic dav commands work, most stuff is still broken
Olaf Wintermann <olaf.wintermann@gmail.com>
parents:
diff changeset
332 iter->remove = true;
efbd59642577 ucx 3 update, basic dav commands work, most stuff is still broken
Olaf Wintermann <olaf.wintermann@gmail.com>
parents:
diff changeset
333 return true;
efbd59642577 ucx 3 update, basic dav commands work, most stuff is still broken
Olaf Wintermann <olaf.wintermann@gmail.com>
parents:
diff changeset
334 } else {
efbd59642577 ucx 3 update, basic dav commands work, most stuff is still broken
Olaf Wintermann <olaf.wintermann@gmail.com>
parents:
diff changeset
335 return false;
efbd59642577 ucx 3 update, basic dav commands work, most stuff is still broken
Olaf Wintermann <olaf.wintermann@gmail.com>
parents:
diff changeset
336 }
efbd59642577 ucx 3 update, basic dav commands work, most stuff is still broken
Olaf Wintermann <olaf.wintermann@gmail.com>
parents:
diff changeset
337 }
efbd59642577 ucx 3 update, basic dav commands work, most stuff is still broken
Olaf Wintermann <olaf.wintermann@gmail.com>
parents:
diff changeset
338
750
4d7a2238c5ac update ucx
Olaf Wintermann <olaf.wintermann@gmail.com>
parents: 747
diff changeset
339 static CxIterator cx_hash_map_iterator(
4d7a2238c5ac update ucx
Olaf Wintermann <olaf.wintermann@gmail.com>
parents: 747
diff changeset
340 CxMap const *map,
4d7a2238c5ac update ucx
Olaf Wintermann <olaf.wintermann@gmail.com>
parents: 747
diff changeset
341 enum cx_map_iterator_type type
4d7a2238c5ac update ucx
Olaf Wintermann <olaf.wintermann@gmail.com>
parents: 747
diff changeset
342 ) {
747
efbd59642577 ucx 3 update, basic dav commands work, most stuff is still broken
Olaf Wintermann <olaf.wintermann@gmail.com>
parents:
diff changeset
343 CxIterator iter;
efbd59642577 ucx 3 update, basic dav commands work, most stuff is still broken
Olaf Wintermann <olaf.wintermann@gmail.com>
parents:
diff changeset
344
efbd59642577 ucx 3 update, basic dav commands work, most stuff is still broken
Olaf Wintermann <olaf.wintermann@gmail.com>
parents:
diff changeset
345 iter.src_handle = map;
efbd59642577 ucx 3 update, basic dav commands work, most stuff is still broken
Olaf Wintermann <olaf.wintermann@gmail.com>
parents:
diff changeset
346 iter.base.valid = cx_hash_map_iter_valid;
efbd59642577 ucx 3 update, basic dav commands work, most stuff is still broken
Olaf Wintermann <olaf.wintermann@gmail.com>
parents:
diff changeset
347 iter.base.next = cx_hash_map_iter_next;
750
4d7a2238c5ac update ucx
Olaf Wintermann <olaf.wintermann@gmail.com>
parents: 747
diff changeset
348
4d7a2238c5ac update ucx
Olaf Wintermann <olaf.wintermann@gmail.com>
parents: 747
diff changeset
349 switch (type) {
4d7a2238c5ac update ucx
Olaf Wintermann <olaf.wintermann@gmail.com>
parents: 747
diff changeset
350 case CX_MAP_ITERATOR_PAIRS:
4d7a2238c5ac update ucx
Olaf Wintermann <olaf.wintermann@gmail.com>
parents: 747
diff changeset
351 iter.base.current = cx_hash_map_iter_current_entry;
4d7a2238c5ac update ucx
Olaf Wintermann <olaf.wintermann@gmail.com>
parents: 747
diff changeset
352 break;
4d7a2238c5ac update ucx
Olaf Wintermann <olaf.wintermann@gmail.com>
parents: 747
diff changeset
353 case CX_MAP_ITERATOR_KEYS:
4d7a2238c5ac update ucx
Olaf Wintermann <olaf.wintermann@gmail.com>
parents: 747
diff changeset
354 iter.base.current = cx_hash_map_iter_current_key;
4d7a2238c5ac update ucx
Olaf Wintermann <olaf.wintermann@gmail.com>
parents: 747
diff changeset
355 break;
4d7a2238c5ac update ucx
Olaf Wintermann <olaf.wintermann@gmail.com>
parents: 747
diff changeset
356 case CX_MAP_ITERATOR_VALUES:
4d7a2238c5ac update ucx
Olaf Wintermann <olaf.wintermann@gmail.com>
parents: 747
diff changeset
357 iter.base.current = cx_hash_map_iter_current_value;
4d7a2238c5ac update ucx
Olaf Wintermann <olaf.wintermann@gmail.com>
parents: 747
diff changeset
358 break;
4d7a2238c5ac update ucx
Olaf Wintermann <olaf.wintermann@gmail.com>
parents: 747
diff changeset
359 default:
4d7a2238c5ac update ucx
Olaf Wintermann <olaf.wintermann@gmail.com>
parents: 747
diff changeset
360 assert(false);
4d7a2238c5ac update ucx
Olaf Wintermann <olaf.wintermann@gmail.com>
parents: 747
diff changeset
361 }
4d7a2238c5ac update ucx
Olaf Wintermann <olaf.wintermann@gmail.com>
parents: 747
diff changeset
362
747
efbd59642577 ucx 3 update, basic dav commands work, most stuff is still broken
Olaf Wintermann <olaf.wintermann@gmail.com>
parents:
diff changeset
363 iter.base.flag_removal = cx_hash_map_iter_flag_rm;
efbd59642577 ucx 3 update, basic dav commands work, most stuff is still broken
Olaf Wintermann <olaf.wintermann@gmail.com>
parents:
diff changeset
364 iter.base.remove = false;
efbd59642577 ucx 3 update, basic dav commands work, most stuff is still broken
Olaf Wintermann <olaf.wintermann@gmail.com>
parents:
diff changeset
365 iter.base.mutating = false;
efbd59642577 ucx 3 update, basic dav commands work, most stuff is still broken
Olaf Wintermann <olaf.wintermann@gmail.com>
parents:
diff changeset
366
efbd59642577 ucx 3 update, basic dav commands work, most stuff is still broken
Olaf Wintermann <olaf.wintermann@gmail.com>
parents:
diff changeset
367 iter.slot = 0;
efbd59642577 ucx 3 update, basic dav commands work, most stuff is still broken
Olaf Wintermann <olaf.wintermann@gmail.com>
parents:
diff changeset
368 iter.index = 0;
efbd59642577 ucx 3 update, basic dav commands work, most stuff is still broken
Olaf Wintermann <olaf.wintermann@gmail.com>
parents:
diff changeset
369
efbd59642577 ucx 3 update, basic dav commands work, most stuff is still broken
Olaf Wintermann <olaf.wintermann@gmail.com>
parents:
diff changeset
370 if (map->size > 0) {
efbd59642577 ucx 3 update, basic dav commands work, most stuff is still broken
Olaf Wintermann <olaf.wintermann@gmail.com>
parents:
diff changeset
371 struct cx_hash_map_s *hash_map = (struct cx_hash_map_s *) map;
efbd59642577 ucx 3 update, basic dav commands work, most stuff is still broken
Olaf Wintermann <olaf.wintermann@gmail.com>
parents:
diff changeset
372 struct cx_hash_map_element_s *elm = hash_map->buckets[0];
efbd59642577 ucx 3 update, basic dav commands work, most stuff is still broken
Olaf Wintermann <olaf.wintermann@gmail.com>
parents:
diff changeset
373 while (elm == NULL) {
efbd59642577 ucx 3 update, basic dav commands work, most stuff is still broken
Olaf Wintermann <olaf.wintermann@gmail.com>
parents:
diff changeset
374 elm = hash_map->buckets[++iter.slot];
efbd59642577 ucx 3 update, basic dav commands work, most stuff is still broken
Olaf Wintermann <olaf.wintermann@gmail.com>
parents:
diff changeset
375 }
efbd59642577 ucx 3 update, basic dav commands work, most stuff is still broken
Olaf Wintermann <olaf.wintermann@gmail.com>
parents:
diff changeset
376 iter.elem_handle = elm;
efbd59642577 ucx 3 update, basic dav commands work, most stuff is still broken
Olaf Wintermann <olaf.wintermann@gmail.com>
parents:
diff changeset
377 iter.kv_data.key = &elm->key;
efbd59642577 ucx 3 update, basic dav commands work, most stuff is still broken
Olaf Wintermann <olaf.wintermann@gmail.com>
parents:
diff changeset
378 if (map->store_pointer) {
efbd59642577 ucx 3 update, basic dav commands work, most stuff is still broken
Olaf Wintermann <olaf.wintermann@gmail.com>
parents:
diff changeset
379 iter.kv_data.value = *(void **) elm->data;
efbd59642577 ucx 3 update, basic dav commands work, most stuff is still broken
Olaf Wintermann <olaf.wintermann@gmail.com>
parents:
diff changeset
380 } else {
efbd59642577 ucx 3 update, basic dav commands work, most stuff is still broken
Olaf Wintermann <olaf.wintermann@gmail.com>
parents:
diff changeset
381 iter.kv_data.value = elm->data;
efbd59642577 ucx 3 update, basic dav commands work, most stuff is still broken
Olaf Wintermann <olaf.wintermann@gmail.com>
parents:
diff changeset
382 }
efbd59642577 ucx 3 update, basic dav commands work, most stuff is still broken
Olaf Wintermann <olaf.wintermann@gmail.com>
parents:
diff changeset
383 } else {
efbd59642577 ucx 3 update, basic dav commands work, most stuff is still broken
Olaf Wintermann <olaf.wintermann@gmail.com>
parents:
diff changeset
384 iter.elem_handle = NULL;
efbd59642577 ucx 3 update, basic dav commands work, most stuff is still broken
Olaf Wintermann <olaf.wintermann@gmail.com>
parents:
diff changeset
385 iter.kv_data.key = NULL;
efbd59642577 ucx 3 update, basic dav commands work, most stuff is still broken
Olaf Wintermann <olaf.wintermann@gmail.com>
parents:
diff changeset
386 iter.kv_data.value = NULL;
efbd59642577 ucx 3 update, basic dav commands work, most stuff is still broken
Olaf Wintermann <olaf.wintermann@gmail.com>
parents:
diff changeset
387 }
efbd59642577 ucx 3 update, basic dav commands work, most stuff is still broken
Olaf Wintermann <olaf.wintermann@gmail.com>
parents:
diff changeset
388
efbd59642577 ucx 3 update, basic dav commands work, most stuff is still broken
Olaf Wintermann <olaf.wintermann@gmail.com>
parents:
diff changeset
389 return iter;
efbd59642577 ucx 3 update, basic dav commands work, most stuff is still broken
Olaf Wintermann <olaf.wintermann@gmail.com>
parents:
diff changeset
390 }
efbd59642577 ucx 3 update, basic dav commands work, most stuff is still broken
Olaf Wintermann <olaf.wintermann@gmail.com>
parents:
diff changeset
391
efbd59642577 ucx 3 update, basic dav commands work, most stuff is still broken
Olaf Wintermann <olaf.wintermann@gmail.com>
parents:
diff changeset
392 static cx_map_class cx_hash_map_class = {
efbd59642577 ucx 3 update, basic dav commands work, most stuff is still broken
Olaf Wintermann <olaf.wintermann@gmail.com>
parents:
diff changeset
393 cx_hash_map_destructor,
efbd59642577 ucx 3 update, basic dav commands work, most stuff is still broken
Olaf Wintermann <olaf.wintermann@gmail.com>
parents:
diff changeset
394 cx_hash_map_clear,
efbd59642577 ucx 3 update, basic dav commands work, most stuff is still broken
Olaf Wintermann <olaf.wintermann@gmail.com>
parents:
diff changeset
395 cx_hash_map_put,
efbd59642577 ucx 3 update, basic dav commands work, most stuff is still broken
Olaf Wintermann <olaf.wintermann@gmail.com>
parents:
diff changeset
396 cx_hash_map_get,
efbd59642577 ucx 3 update, basic dav commands work, most stuff is still broken
Olaf Wintermann <olaf.wintermann@gmail.com>
parents:
diff changeset
397 cx_hash_map_remove,
efbd59642577 ucx 3 update, basic dav commands work, most stuff is still broken
Olaf Wintermann <olaf.wintermann@gmail.com>
parents:
diff changeset
398 cx_hash_map_iterator,
efbd59642577 ucx 3 update, basic dav commands work, most stuff is still broken
Olaf Wintermann <olaf.wintermann@gmail.com>
parents:
diff changeset
399 };
efbd59642577 ucx 3 update, basic dav commands work, most stuff is still broken
Olaf Wintermann <olaf.wintermann@gmail.com>
parents:
diff changeset
400
efbd59642577 ucx 3 update, basic dav commands work, most stuff is still broken
Olaf Wintermann <olaf.wintermann@gmail.com>
parents:
diff changeset
401 CxMap *cxHashMapCreate(
efbd59642577 ucx 3 update, basic dav commands work, most stuff is still broken
Olaf Wintermann <olaf.wintermann@gmail.com>
parents:
diff changeset
402 CxAllocator const *allocator,
efbd59642577 ucx 3 update, basic dav commands work, most stuff is still broken
Olaf Wintermann <olaf.wintermann@gmail.com>
parents:
diff changeset
403 size_t itemsize,
efbd59642577 ucx 3 update, basic dav commands work, most stuff is still broken
Olaf Wintermann <olaf.wintermann@gmail.com>
parents:
diff changeset
404 size_t buckets
efbd59642577 ucx 3 update, basic dav commands work, most stuff is still broken
Olaf Wintermann <olaf.wintermann@gmail.com>
parents:
diff changeset
405 ) {
efbd59642577 ucx 3 update, basic dav commands work, most stuff is still broken
Olaf Wintermann <olaf.wintermann@gmail.com>
parents:
diff changeset
406 if (buckets == 0) {
efbd59642577 ucx 3 update, basic dav commands work, most stuff is still broken
Olaf Wintermann <olaf.wintermann@gmail.com>
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407 // implementation defined default
efbd59642577 ucx 3 update, basic dav commands work, most stuff is still broken
Olaf Wintermann <olaf.wintermann@gmail.com>
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408 buckets = 16;
efbd59642577 ucx 3 update, basic dav commands work, most stuff is still broken
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409 }
efbd59642577 ucx 3 update, basic dav commands work, most stuff is still broken
Olaf Wintermann <olaf.wintermann@gmail.com>
parents:
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410
efbd59642577 ucx 3 update, basic dav commands work, most stuff is still broken
Olaf Wintermann <olaf.wintermann@gmail.com>
parents:
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411 struct cx_hash_map_s *map = cxCalloc(allocator, 1,
efbd59642577 ucx 3 update, basic dav commands work, most stuff is still broken
Olaf Wintermann <olaf.wintermann@gmail.com>
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412 sizeof(struct cx_hash_map_s));
efbd59642577 ucx 3 update, basic dav commands work, most stuff is still broken
Olaf Wintermann <olaf.wintermann@gmail.com>
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413 if (map == NULL) return NULL;
efbd59642577 ucx 3 update, basic dav commands work, most stuff is still broken
Olaf Wintermann <olaf.wintermann@gmail.com>
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414
efbd59642577 ucx 3 update, basic dav commands work, most stuff is still broken
Olaf Wintermann <olaf.wintermann@gmail.com>
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415 // initialize hash map members
efbd59642577 ucx 3 update, basic dav commands work, most stuff is still broken
Olaf Wintermann <olaf.wintermann@gmail.com>
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416 map->bucket_count = buckets;
efbd59642577 ucx 3 update, basic dav commands work, most stuff is still broken
Olaf Wintermann <olaf.wintermann@gmail.com>
parents:
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417 map->buckets = cxCalloc(allocator, buckets,
efbd59642577 ucx 3 update, basic dav commands work, most stuff is still broken
Olaf Wintermann <olaf.wintermann@gmail.com>
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418 sizeof(struct cx_hash_map_element_s *));
efbd59642577 ucx 3 update, basic dav commands work, most stuff is still broken
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419 if (map->buckets == NULL) {
efbd59642577 ucx 3 update, basic dav commands work, most stuff is still broken
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420 cxFree(allocator, map);
efbd59642577 ucx 3 update, basic dav commands work, most stuff is still broken
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421 return NULL;
efbd59642577 ucx 3 update, basic dav commands work, most stuff is still broken
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422 }
efbd59642577 ucx 3 update, basic dav commands work, most stuff is still broken
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423
efbd59642577 ucx 3 update, basic dav commands work, most stuff is still broken
Olaf Wintermann <olaf.wintermann@gmail.com>
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424 // initialize base members
efbd59642577 ucx 3 update, basic dav commands work, most stuff is still broken
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425 map->base.cl = &cx_hash_map_class;
efbd59642577 ucx 3 update, basic dav commands work, most stuff is still broken
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426 map->base.allocator = allocator;
efbd59642577 ucx 3 update, basic dav commands work, most stuff is still broken
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427
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428 if (itemsize > 0) {
efbd59642577 ucx 3 update, basic dav commands work, most stuff is still broken
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429 map->base.store_pointer = false;
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430 map->base.item_size = itemsize;
efbd59642577 ucx 3 update, basic dav commands work, most stuff is still broken
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431 } else {
efbd59642577 ucx 3 update, basic dav commands work, most stuff is still broken
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432 map->base.store_pointer = true;
efbd59642577 ucx 3 update, basic dav commands work, most stuff is still broken
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433 map->base.item_size = sizeof(void *);
efbd59642577 ucx 3 update, basic dav commands work, most stuff is still broken
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434 }
efbd59642577 ucx 3 update, basic dav commands work, most stuff is still broken
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435
efbd59642577 ucx 3 update, basic dav commands work, most stuff is still broken
Olaf Wintermann <olaf.wintermann@gmail.com>
parents:
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436 return (CxMap *) map;
efbd59642577 ucx 3 update, basic dav commands work, most stuff is still broken
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437 }
efbd59642577 ucx 3 update, basic dav commands work, most stuff is still broken
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parents:
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438
efbd59642577 ucx 3 update, basic dav commands work, most stuff is still broken
Olaf Wintermann <olaf.wintermann@gmail.com>
parents:
diff changeset
439 int cxMapRehash(CxMap *map) {
efbd59642577 ucx 3 update, basic dav commands work, most stuff is still broken
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parents:
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440 struct cx_hash_map_s *hash_map = (struct cx_hash_map_s *) map;
efbd59642577 ucx 3 update, basic dav commands work, most stuff is still broken
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parents:
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441 if (map->size > ((hash_map->bucket_count * 3) >> 2)) {
efbd59642577 ucx 3 update, basic dav commands work, most stuff is still broken
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442
efbd59642577 ucx 3 update, basic dav commands work, most stuff is still broken
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443 size_t new_bucket_count = (map->size * 5) >> 1;
efbd59642577 ucx 3 update, basic dav commands work, most stuff is still broken
Olaf Wintermann <olaf.wintermann@gmail.com>
parents:
diff changeset
444 struct cx_hash_map_element_s **new_buckets = cxCalloc(
efbd59642577 ucx 3 update, basic dav commands work, most stuff is still broken
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445 map->allocator,
efbd59642577 ucx 3 update, basic dav commands work, most stuff is still broken
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446 new_bucket_count, sizeof(struct cx_hash_map_element_s *)
efbd59642577 ucx 3 update, basic dav commands work, most stuff is still broken
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parents:
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447 );
efbd59642577 ucx 3 update, basic dav commands work, most stuff is still broken
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parents:
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448
efbd59642577 ucx 3 update, basic dav commands work, most stuff is still broken
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diff changeset
449 if (new_buckets == NULL) {
efbd59642577 ucx 3 update, basic dav commands work, most stuff is still broken
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450 return 1;
efbd59642577 ucx 3 update, basic dav commands work, most stuff is still broken
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parents:
diff changeset
451 }
efbd59642577 ucx 3 update, basic dav commands work, most stuff is still broken
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parents:
diff changeset
452
efbd59642577 ucx 3 update, basic dav commands work, most stuff is still broken
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453 // iterate through the elements and assign them to their new slots
efbd59642577 ucx 3 update, basic dav commands work, most stuff is still broken
Olaf Wintermann <olaf.wintermann@gmail.com>
parents:
diff changeset
454 cx_for_n(slot, hash_map->bucket_count) {
efbd59642577 ucx 3 update, basic dav commands work, most stuff is still broken
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diff changeset
455 struct cx_hash_map_element_s *elm = hash_map->buckets[slot];
efbd59642577 ucx 3 update, basic dav commands work, most stuff is still broken
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parents:
diff changeset
456 while (elm != NULL) {
efbd59642577 ucx 3 update, basic dav commands work, most stuff is still broken
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diff changeset
457 struct cx_hash_map_element_s *next = elm->next;
efbd59642577 ucx 3 update, basic dav commands work, most stuff is still broken
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parents:
diff changeset
458 size_t new_slot = elm->key.hash % new_bucket_count;
efbd59642577 ucx 3 update, basic dav commands work, most stuff is still broken
Olaf Wintermann <olaf.wintermann@gmail.com>
parents:
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459
efbd59642577 ucx 3 update, basic dav commands work, most stuff is still broken
Olaf Wintermann <olaf.wintermann@gmail.com>
parents:
diff changeset
460 // find position where to insert
efbd59642577 ucx 3 update, basic dav commands work, most stuff is still broken
Olaf Wintermann <olaf.wintermann@gmail.com>
parents:
diff changeset
461 struct cx_hash_map_element_s *bucket_next = new_buckets[new_slot];
efbd59642577 ucx 3 update, basic dav commands work, most stuff is still broken
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parents:
diff changeset
462 struct cx_hash_map_element_s *bucket_prev = NULL;
efbd59642577 ucx 3 update, basic dav commands work, most stuff is still broken
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parents:
diff changeset
463 while (bucket_next != NULL &&
efbd59642577 ucx 3 update, basic dav commands work, most stuff is still broken
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parents:
diff changeset
464 bucket_next->key.hash < elm->key.hash) {
efbd59642577 ucx 3 update, basic dav commands work, most stuff is still broken
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parents:
diff changeset
465 bucket_prev = bucket_next;
efbd59642577 ucx 3 update, basic dav commands work, most stuff is still broken
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parents:
diff changeset
466 bucket_next = bucket_next->next;
efbd59642577 ucx 3 update, basic dav commands work, most stuff is still broken
Olaf Wintermann <olaf.wintermann@gmail.com>
parents:
diff changeset
467 }
efbd59642577 ucx 3 update, basic dav commands work, most stuff is still broken
Olaf Wintermann <olaf.wintermann@gmail.com>
parents:
diff changeset
468
efbd59642577 ucx 3 update, basic dav commands work, most stuff is still broken
Olaf Wintermann <olaf.wintermann@gmail.com>
parents:
diff changeset
469 // insert
efbd59642577 ucx 3 update, basic dav commands work, most stuff is still broken
Olaf Wintermann <olaf.wintermann@gmail.com>
parents:
diff changeset
470 if (bucket_prev == NULL) {
efbd59642577 ucx 3 update, basic dav commands work, most stuff is still broken
Olaf Wintermann <olaf.wintermann@gmail.com>
parents:
diff changeset
471 elm->next = new_buckets[new_slot];
efbd59642577 ucx 3 update, basic dav commands work, most stuff is still broken
Olaf Wintermann <olaf.wintermann@gmail.com>
parents:
diff changeset
472 new_buckets[new_slot] = elm;
efbd59642577 ucx 3 update, basic dav commands work, most stuff is still broken
Olaf Wintermann <olaf.wintermann@gmail.com>
parents:
diff changeset
473 } else {
efbd59642577 ucx 3 update, basic dav commands work, most stuff is still broken
Olaf Wintermann <olaf.wintermann@gmail.com>
parents:
diff changeset
474 bucket_prev->next = elm;
efbd59642577 ucx 3 update, basic dav commands work, most stuff is still broken
Olaf Wintermann <olaf.wintermann@gmail.com>
parents:
diff changeset
475 elm->next = bucket_next;
efbd59642577 ucx 3 update, basic dav commands work, most stuff is still broken
Olaf Wintermann <olaf.wintermann@gmail.com>
parents:
diff changeset
476 }
efbd59642577 ucx 3 update, basic dav commands work, most stuff is still broken
Olaf Wintermann <olaf.wintermann@gmail.com>
parents:
diff changeset
477
efbd59642577 ucx 3 update, basic dav commands work, most stuff is still broken
Olaf Wintermann <olaf.wintermann@gmail.com>
parents:
diff changeset
478 // advance
efbd59642577 ucx 3 update, basic dav commands work, most stuff is still broken
Olaf Wintermann <olaf.wintermann@gmail.com>
parents:
diff changeset
479 elm = next;
efbd59642577 ucx 3 update, basic dav commands work, most stuff is still broken
Olaf Wintermann <olaf.wintermann@gmail.com>
parents:
diff changeset
480 }
efbd59642577 ucx 3 update, basic dav commands work, most stuff is still broken
Olaf Wintermann <olaf.wintermann@gmail.com>
parents:
diff changeset
481 }
efbd59642577 ucx 3 update, basic dav commands work, most stuff is still broken
Olaf Wintermann <olaf.wintermann@gmail.com>
parents:
diff changeset
482
efbd59642577 ucx 3 update, basic dav commands work, most stuff is still broken
Olaf Wintermann <olaf.wintermann@gmail.com>
parents:
diff changeset
483 // assign result to the map
efbd59642577 ucx 3 update, basic dav commands work, most stuff is still broken
Olaf Wintermann <olaf.wintermann@gmail.com>
parents:
diff changeset
484 hash_map->bucket_count = new_bucket_count;
efbd59642577 ucx 3 update, basic dav commands work, most stuff is still broken
Olaf Wintermann <olaf.wintermann@gmail.com>
parents:
diff changeset
485 cxFree(map->allocator, hash_map->buckets);
efbd59642577 ucx 3 update, basic dav commands work, most stuff is still broken
Olaf Wintermann <olaf.wintermann@gmail.com>
parents:
diff changeset
486 hash_map->buckets = new_buckets;
efbd59642577 ucx 3 update, basic dav commands work, most stuff is still broken
Olaf Wintermann <olaf.wintermann@gmail.com>
parents:
diff changeset
487 }
efbd59642577 ucx 3 update, basic dav commands work, most stuff is still broken
Olaf Wintermann <olaf.wintermann@gmail.com>
parents:
diff changeset
488 return 0;
efbd59642577 ucx 3 update, basic dav commands work, most stuff is still broken
Olaf Wintermann <olaf.wintermann@gmail.com>
parents:
diff changeset
489 }

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