src/hash_map.c

Sun, 18 Feb 2024 21:12:28 +0100

author
Mike Becker <universe@uap-core.de>
date
Sun, 18 Feb 2024 21:12:28 +0100
changeset 834
04c53b3c8378
parent 829
7d4e31d295af
child 850
b2bc48c2b251
permissions
-rw-r--r--

capitalize cx_array_declare()

549
d7f0b5a9a985 #189 declare basic map functions
Mike Becker <universe@uap-core.de>
parents:
diff changeset
1 /*
d7f0b5a9a985 #189 declare basic map functions
Mike Becker <universe@uap-core.de>
parents:
diff changeset
2 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS HEADER.
d7f0b5a9a985 #189 declare basic map functions
Mike Becker <universe@uap-core.de>
parents:
diff changeset
3 *
d7f0b5a9a985 #189 declare basic map functions
Mike Becker <universe@uap-core.de>
parents:
diff changeset
4 * Copyright 2021 Mike Becker, Olaf Wintermann All rights reserved.
d7f0b5a9a985 #189 declare basic map functions
Mike Becker <universe@uap-core.de>
parents:
diff changeset
5 *
d7f0b5a9a985 #189 declare basic map functions
Mike Becker <universe@uap-core.de>
parents:
diff changeset
6 * Redistribution and use in source and binary forms, with or without
d7f0b5a9a985 #189 declare basic map functions
Mike Becker <universe@uap-core.de>
parents:
diff changeset
7 * modification, are permitted provided that the following conditions are met:
d7f0b5a9a985 #189 declare basic map functions
Mike Becker <universe@uap-core.de>
parents:
diff changeset
8 *
d7f0b5a9a985 #189 declare basic map functions
Mike Becker <universe@uap-core.de>
parents:
diff changeset
9 * 1. Redistributions of source code must retain the above copyright
d7f0b5a9a985 #189 declare basic map functions
Mike Becker <universe@uap-core.de>
parents:
diff changeset
10 * notice, this list of conditions and the following disclaimer.
d7f0b5a9a985 #189 declare basic map functions
Mike Becker <universe@uap-core.de>
parents:
diff changeset
11 *
d7f0b5a9a985 #189 declare basic map functions
Mike Becker <universe@uap-core.de>
parents:
diff changeset
12 * 2. Redistributions in binary form must reproduce the above copyright
d7f0b5a9a985 #189 declare basic map functions
Mike Becker <universe@uap-core.de>
parents:
diff changeset
13 * notice, this list of conditions and the following disclaimer in the
d7f0b5a9a985 #189 declare basic map functions
Mike Becker <universe@uap-core.de>
parents:
diff changeset
14 * documentation and/or other materials provided with the distribution.
d7f0b5a9a985 #189 declare basic map functions
Mike Becker <universe@uap-core.de>
parents:
diff changeset
15 *
d7f0b5a9a985 #189 declare basic map functions
Mike Becker <universe@uap-core.de>
parents:
diff changeset
16 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
d7f0b5a9a985 #189 declare basic map functions
Mike Becker <universe@uap-core.de>
parents:
diff changeset
17 * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
d7f0b5a9a985 #189 declare basic map functions
Mike Becker <universe@uap-core.de>
parents:
diff changeset
18 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
d7f0b5a9a985 #189 declare basic map functions
Mike Becker <universe@uap-core.de>
parents:
diff changeset
19 * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE
d7f0b5a9a985 #189 declare basic map functions
Mike Becker <universe@uap-core.de>
parents:
diff changeset
20 * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
d7f0b5a9a985 #189 declare basic map functions
Mike Becker <universe@uap-core.de>
parents:
diff changeset
21 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
d7f0b5a9a985 #189 declare basic map functions
Mike Becker <universe@uap-core.de>
parents:
diff changeset
22 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
d7f0b5a9a985 #189 declare basic map functions
Mike Becker <universe@uap-core.de>
parents:
diff changeset
23 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
d7f0b5a9a985 #189 declare basic map functions
Mike Becker <universe@uap-core.de>
parents:
diff changeset
24 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
d7f0b5a9a985 #189 declare basic map functions
Mike Becker <universe@uap-core.de>
parents:
diff changeset
25 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
d7f0b5a9a985 #189 declare basic map functions
Mike Becker <universe@uap-core.de>
parents:
diff changeset
26 * POSSIBILITY OF SUCH DAMAGE.
d7f0b5a9a985 #189 declare basic map functions
Mike Becker <universe@uap-core.de>
parents:
diff changeset
27 */
d7f0b5a9a985 #189 declare basic map functions
Mike Becker <universe@uap-core.de>
parents:
diff changeset
28
d7f0b5a9a985 #189 declare basic map functions
Mike Becker <universe@uap-core.de>
parents:
diff changeset
29 #include "cx/hash_map.h"
550
89b2a83728b1 #189 basic map implementation
Mike Becker <universe@uap-core.de>
parents: 549
diff changeset
30 #include "cx/utils.h"
549
d7f0b5a9a985 #189 declare basic map functions
Mike Becker <universe@uap-core.de>
parents:
diff changeset
31
709
1e8ba59e7911 simplify map class structure
Mike Becker <universe@uap-core.de>
parents: 691
diff changeset
32 #include <string.h>
1e8ba59e7911 simplify map class structure
Mike Becker <universe@uap-core.de>
parents: 691
diff changeset
33 #include <assert.h>
1e8ba59e7911 simplify map class structure
Mike Becker <universe@uap-core.de>
parents: 691
diff changeset
34
658
56c62780582e make hashmap store objects instead of pointers by default - fixes #239
Mike Becker <universe@uap-core.de>
parents: 630
diff changeset
35 struct cx_hash_map_element_s {
56c62780582e make hashmap store objects instead of pointers by default - fixes #239
Mike Becker <universe@uap-core.de>
parents: 630
diff changeset
36 /** A pointer to the next element in the current bucket. */
56c62780582e make hashmap store objects instead of pointers by default - fixes #239
Mike Becker <universe@uap-core.de>
parents: 630
diff changeset
37 struct cx_hash_map_element_s *next;
56c62780582e make hashmap store objects instead of pointers by default - fixes #239
Mike Becker <universe@uap-core.de>
parents: 630
diff changeset
38
56c62780582e make hashmap store objects instead of pointers by default - fixes #239
Mike Becker <universe@uap-core.de>
parents: 630
diff changeset
39 /** The corresponding key. */
56c62780582e make hashmap store objects instead of pointers by default - fixes #239
Mike Becker <universe@uap-core.de>
parents: 630
diff changeset
40 CxHashKey key;
56c62780582e make hashmap store objects instead of pointers by default - fixes #239
Mike Becker <universe@uap-core.de>
parents: 630
diff changeset
41
56c62780582e make hashmap store objects instead of pointers by default - fixes #239
Mike Becker <universe@uap-core.de>
parents: 630
diff changeset
42 /** The value data. */
56c62780582e make hashmap store objects instead of pointers by default - fixes #239
Mike Becker <universe@uap-core.de>
parents: 630
diff changeset
43 char data[];
56c62780582e make hashmap store objects instead of pointers by default - fixes #239
Mike Becker <universe@uap-core.de>
parents: 630
diff changeset
44 };
56c62780582e make hashmap store objects instead of pointers by default - fixes #239
Mike Becker <universe@uap-core.de>
parents: 630
diff changeset
45
550
89b2a83728b1 #189 basic map implementation
Mike Becker <universe@uap-core.de>
parents: 549
diff changeset
46 static void cx_hash_map_clear(struct cx_map_s *map) {
89b2a83728b1 #189 basic map implementation
Mike Becker <universe@uap-core.de>
parents: 549
diff changeset
47 struct cx_hash_map_s *hash_map = (struct cx_hash_map_s *) map;
89b2a83728b1 #189 basic map implementation
Mike Becker <universe@uap-core.de>
parents: 549
diff changeset
48 cx_for_n(i, hash_map->bucket_count) {
89b2a83728b1 #189 basic map implementation
Mike Becker <universe@uap-core.de>
parents: 549
diff changeset
49 struct cx_hash_map_element_s *elem = hash_map->buckets[i];
89b2a83728b1 #189 basic map implementation
Mike Becker <universe@uap-core.de>
parents: 549
diff changeset
50 if (elem != NULL) {
89b2a83728b1 #189 basic map implementation
Mike Becker <universe@uap-core.de>
parents: 549
diff changeset
51 do {
89b2a83728b1 #189 basic map implementation
Mike Becker <universe@uap-core.de>
parents: 549
diff changeset
52 struct cx_hash_map_element_s *next = elem->next;
686
64919f63f059 add destructor functions for maps - fixes #253
Mike Becker <universe@uap-core.de>
parents: 685
diff changeset
53 // invoke the destructor
64919f63f059 add destructor functions for maps - fixes #253
Mike Becker <universe@uap-core.de>
parents: 685
diff changeset
54 cx_invoke_destructor(map, elem->data);
550
89b2a83728b1 #189 basic map implementation
Mike Becker <universe@uap-core.de>
parents: 549
diff changeset
55 // free the key data
690
2c2304622981 simplify CxHashKey
Mike Becker <universe@uap-core.de>
parents: 688
diff changeset
56 cxFree(map->allocator, (void *) elem->key.data);
550
89b2a83728b1 #189 basic map implementation
Mike Becker <universe@uap-core.de>
parents: 549
diff changeset
57 // free the node
89b2a83728b1 #189 basic map implementation
Mike Becker <universe@uap-core.de>
parents: 549
diff changeset
58 cxFree(map->allocator, elem);
89b2a83728b1 #189 basic map implementation
Mike Becker <universe@uap-core.de>
parents: 549
diff changeset
59 // proceed
89b2a83728b1 #189 basic map implementation
Mike Becker <universe@uap-core.de>
parents: 549
diff changeset
60 elem = next;
89b2a83728b1 #189 basic map implementation
Mike Becker <universe@uap-core.de>
parents: 549
diff changeset
61 } while (elem != NULL);
89b2a83728b1 #189 basic map implementation
Mike Becker <universe@uap-core.de>
parents: 549
diff changeset
62
89b2a83728b1 #189 basic map implementation
Mike Becker <universe@uap-core.de>
parents: 549
diff changeset
63 // do not leave a dangling pointer
89b2a83728b1 #189 basic map implementation
Mike Becker <universe@uap-core.de>
parents: 549
diff changeset
64 hash_map->buckets[i] = NULL;
89b2a83728b1 #189 basic map implementation
Mike Becker <universe@uap-core.de>
parents: 549
diff changeset
65 }
89b2a83728b1 #189 basic map implementation
Mike Becker <universe@uap-core.de>
parents: 549
diff changeset
66 }
89b2a83728b1 #189 basic map implementation
Mike Becker <universe@uap-core.de>
parents: 549
diff changeset
67 map->size = 0;
89b2a83728b1 #189 basic map implementation
Mike Becker <universe@uap-core.de>
parents: 549
diff changeset
68 }
89b2a83728b1 #189 basic map implementation
Mike Becker <universe@uap-core.de>
parents: 549
diff changeset
69
89b2a83728b1 #189 basic map implementation
Mike Becker <universe@uap-core.de>
parents: 549
diff changeset
70 static void cx_hash_map_destructor(struct cx_map_s *map) {
89b2a83728b1 #189 basic map implementation
Mike Becker <universe@uap-core.de>
parents: 549
diff changeset
71 struct cx_hash_map_s *hash_map = (struct cx_hash_map_s *) map;
89b2a83728b1 #189 basic map implementation
Mike Becker <universe@uap-core.de>
parents: 549
diff changeset
72
89b2a83728b1 #189 basic map implementation
Mike Becker <universe@uap-core.de>
parents: 549
diff changeset
73 // free the buckets
89b2a83728b1 #189 basic map implementation
Mike Becker <universe@uap-core.de>
parents: 549
diff changeset
74 cx_hash_map_clear(map);
89b2a83728b1 #189 basic map implementation
Mike Becker <universe@uap-core.de>
parents: 549
diff changeset
75 cxFree(map->allocator, hash_map->buckets);
89b2a83728b1 #189 basic map implementation
Mike Becker <universe@uap-core.de>
parents: 549
diff changeset
76
89b2a83728b1 #189 basic map implementation
Mike Becker <universe@uap-core.de>
parents: 549
diff changeset
77 // free the map structure
89b2a83728b1 #189 basic map implementation
Mike Becker <universe@uap-core.de>
parents: 549
diff changeset
78 cxFree(map->allocator, map);
89b2a83728b1 #189 basic map implementation
Mike Becker <universe@uap-core.de>
parents: 549
diff changeset
79 }
89b2a83728b1 #189 basic map implementation
Mike Becker <universe@uap-core.de>
parents: 549
diff changeset
80
89b2a83728b1 #189 basic map implementation
Mike Becker <universe@uap-core.de>
parents: 549
diff changeset
81 static int cx_hash_map_put(
89b2a83728b1 #189 basic map implementation
Mike Becker <universe@uap-core.de>
parents: 549
diff changeset
82 CxMap *map,
563
69a83fad8a35 improve hash key handling
Mike Becker <universe@uap-core.de>
parents: 562
diff changeset
83 CxHashKey key,
550
89b2a83728b1 #189 basic map implementation
Mike Becker <universe@uap-core.de>
parents: 549
diff changeset
84 void *value
89b2a83728b1 #189 basic map implementation
Mike Becker <universe@uap-core.de>
parents: 549
diff changeset
85 ) {
89b2a83728b1 #189 basic map implementation
Mike Becker <universe@uap-core.de>
parents: 549
diff changeset
86 struct cx_hash_map_s *hash_map = (struct cx_hash_map_s *) map;
686
64919f63f059 add destructor functions for maps - fixes #253
Mike Becker <universe@uap-core.de>
parents: 685
diff changeset
87 CxAllocator const *allocator = map->allocator;
550
89b2a83728b1 #189 basic map implementation
Mike Becker <universe@uap-core.de>
parents: 549
diff changeset
88
563
69a83fad8a35 improve hash key handling
Mike Becker <universe@uap-core.de>
parents: 562
diff changeset
89 unsigned hash = key.hash;
69a83fad8a35 improve hash key handling
Mike Becker <universe@uap-core.de>
parents: 562
diff changeset
90 if (hash == 0) {
69a83fad8a35 improve hash key handling
Mike Becker <universe@uap-core.de>
parents: 562
diff changeset
91 cx_hash_murmur(&key);
69a83fad8a35 improve hash key handling
Mike Becker <universe@uap-core.de>
parents: 562
diff changeset
92 hash = key.hash;
69a83fad8a35 improve hash key handling
Mike Becker <universe@uap-core.de>
parents: 562
diff changeset
93 }
550
89b2a83728b1 #189 basic map implementation
Mike Becker <universe@uap-core.de>
parents: 549
diff changeset
94
89b2a83728b1 #189 basic map implementation
Mike Becker <universe@uap-core.de>
parents: 549
diff changeset
95 size_t slot = hash % hash_map->bucket_count;
89b2a83728b1 #189 basic map implementation
Mike Becker <universe@uap-core.de>
parents: 549
diff changeset
96 struct cx_hash_map_element_s *elm = hash_map->buckets[slot];
89b2a83728b1 #189 basic map implementation
Mike Becker <universe@uap-core.de>
parents: 549
diff changeset
97 struct cx_hash_map_element_s *prev = NULL;
89b2a83728b1 #189 basic map implementation
Mike Becker <universe@uap-core.de>
parents: 549
diff changeset
98
89b2a83728b1 #189 basic map implementation
Mike Becker <universe@uap-core.de>
parents: 549
diff changeset
99 while (elm != NULL && elm->key.hash < hash) {
89b2a83728b1 #189 basic map implementation
Mike Becker <universe@uap-core.de>
parents: 549
diff changeset
100 prev = elm;
89b2a83728b1 #189 basic map implementation
Mike Becker <universe@uap-core.de>
parents: 549
diff changeset
101 elm = elm->next;
89b2a83728b1 #189 basic map implementation
Mike Becker <universe@uap-core.de>
parents: 549
diff changeset
102 }
89b2a83728b1 #189 basic map implementation
Mike Becker <universe@uap-core.de>
parents: 549
diff changeset
103
575
b05935945637 fix #200 - key contents not compared in cx_hash_map_put()
Mike Becker <universe@uap-core.de>
parents: 574
diff changeset
104 if (elm != NULL && elm->key.hash == hash && elm->key.len == key.len &&
690
2c2304622981 simplify CxHashKey
Mike Becker <universe@uap-core.de>
parents: 688
diff changeset
105 memcmp(elm->key.data, key.data, key.len) == 0) {
574
d566bd3e6af8 invert if-condition in preparation for the next bugfix
Mike Becker <universe@uap-core.de>
parents: 573
diff changeset
106 // overwrite existing element
685
2dd841e364af add base collection members to map interface
Mike Becker <universe@uap-core.de>
parents: 677
diff changeset
107 if (map->store_pointer) {
658
56c62780582e make hashmap store objects instead of pointers by default - fixes #239
Mike Becker <universe@uap-core.de>
parents: 630
diff changeset
108 memcpy(elm->data, &value, sizeof(void *));
56c62780582e make hashmap store objects instead of pointers by default - fixes #239
Mike Becker <universe@uap-core.de>
parents: 630
diff changeset
109 } else {
677
b09aae58bba4 refactoring of collections to make use of destructors in map implementations
Mike Becker <universe@uap-core.de>
parents: 669
diff changeset
110 memcpy(elm->data, value, map->item_size);
658
56c62780582e make hashmap store objects instead of pointers by default - fixes #239
Mike Becker <universe@uap-core.de>
parents: 630
diff changeset
111 }
574
d566bd3e6af8 invert if-condition in preparation for the next bugfix
Mike Becker <universe@uap-core.de>
parents: 573
diff changeset
112 } else {
575
b05935945637 fix #200 - key contents not compared in cx_hash_map_put()
Mike Becker <universe@uap-core.de>
parents: 574
diff changeset
113 // allocate new element
658
56c62780582e make hashmap store objects instead of pointers by default - fixes #239
Mike Becker <universe@uap-core.de>
parents: 630
diff changeset
114 struct cx_hash_map_element_s *e = cxMalloc(
56c62780582e make hashmap store objects instead of pointers by default - fixes #239
Mike Becker <universe@uap-core.de>
parents: 630
diff changeset
115 allocator,
677
b09aae58bba4 refactoring of collections to make use of destructors in map implementations
Mike Becker <universe@uap-core.de>
parents: 669
diff changeset
116 sizeof(struct cx_hash_map_element_s) + map->item_size
658
56c62780582e make hashmap store objects instead of pointers by default - fixes #239
Mike Becker <universe@uap-core.de>
parents: 630
diff changeset
117 );
550
89b2a83728b1 #189 basic map implementation
Mike Becker <universe@uap-core.de>
parents: 549
diff changeset
118 if (e == NULL) {
89b2a83728b1 #189 basic map implementation
Mike Becker <universe@uap-core.de>
parents: 549
diff changeset
119 return -1;
89b2a83728b1 #189 basic map implementation
Mike Becker <universe@uap-core.de>
parents: 549
diff changeset
120 }
89b2a83728b1 #189 basic map implementation
Mike Becker <universe@uap-core.de>
parents: 549
diff changeset
121
89b2a83728b1 #189 basic map implementation
Mike Becker <universe@uap-core.de>
parents: 549
diff changeset
122 // write the value
685
2dd841e364af add base collection members to map interface
Mike Becker <universe@uap-core.de>
parents: 677
diff changeset
123 if (map->store_pointer) {
658
56c62780582e make hashmap store objects instead of pointers by default - fixes #239
Mike Becker <universe@uap-core.de>
parents: 630
diff changeset
124 memcpy(e->data, &value, sizeof(void *));
56c62780582e make hashmap store objects instead of pointers by default - fixes #239
Mike Becker <universe@uap-core.de>
parents: 630
diff changeset
125 } else {
677
b09aae58bba4 refactoring of collections to make use of destructors in map implementations
Mike Becker <universe@uap-core.de>
parents: 669
diff changeset
126 memcpy(e->data, value, map->item_size);
658
56c62780582e make hashmap store objects instead of pointers by default - fixes #239
Mike Becker <universe@uap-core.de>
parents: 630
diff changeset
127 }
550
89b2a83728b1 #189 basic map implementation
Mike Becker <universe@uap-core.de>
parents: 549
diff changeset
128
89b2a83728b1 #189 basic map implementation
Mike Becker <universe@uap-core.de>
parents: 549
diff changeset
129 // copy the key
89b2a83728b1 #189 basic map implementation
Mike Becker <universe@uap-core.de>
parents: 549
diff changeset
130 void *kd = cxMalloc(allocator, key.len);
89b2a83728b1 #189 basic map implementation
Mike Becker <universe@uap-core.de>
parents: 549
diff changeset
131 if (kd == NULL) {
89b2a83728b1 #189 basic map implementation
Mike Becker <universe@uap-core.de>
parents: 549
diff changeset
132 return -1;
89b2a83728b1 #189 basic map implementation
Mike Becker <universe@uap-core.de>
parents: 549
diff changeset
133 }
690
2c2304622981 simplify CxHashKey
Mike Becker <universe@uap-core.de>
parents: 688
diff changeset
134 memcpy(kd, key.data, key.len);
2c2304622981 simplify CxHashKey
Mike Becker <universe@uap-core.de>
parents: 688
diff changeset
135 e->key.data = kd;
550
89b2a83728b1 #189 basic map implementation
Mike Becker <universe@uap-core.de>
parents: 549
diff changeset
136 e->key.len = key.len;
89b2a83728b1 #189 basic map implementation
Mike Becker <universe@uap-core.de>
parents: 549
diff changeset
137 e->key.hash = hash;
89b2a83728b1 #189 basic map implementation
Mike Becker <universe@uap-core.de>
parents: 549
diff changeset
138
89b2a83728b1 #189 basic map implementation
Mike Becker <universe@uap-core.de>
parents: 549
diff changeset
139 // insert the element into the linked list
89b2a83728b1 #189 basic map implementation
Mike Becker <universe@uap-core.de>
parents: 549
diff changeset
140 if (prev == NULL) {
89b2a83728b1 #189 basic map implementation
Mike Becker <universe@uap-core.de>
parents: 549
diff changeset
141 hash_map->buckets[slot] = e;
89b2a83728b1 #189 basic map implementation
Mike Becker <universe@uap-core.de>
parents: 549
diff changeset
142 } else {
89b2a83728b1 #189 basic map implementation
Mike Becker <universe@uap-core.de>
parents: 549
diff changeset
143 prev->next = e;
89b2a83728b1 #189 basic map implementation
Mike Becker <universe@uap-core.de>
parents: 549
diff changeset
144 }
89b2a83728b1 #189 basic map implementation
Mike Becker <universe@uap-core.de>
parents: 549
diff changeset
145 e->next = elm;
89b2a83728b1 #189 basic map implementation
Mike Becker <universe@uap-core.de>
parents: 549
diff changeset
146
89b2a83728b1 #189 basic map implementation
Mike Becker <universe@uap-core.de>
parents: 549
diff changeset
147 // increase the size
89b2a83728b1 #189 basic map implementation
Mike Becker <universe@uap-core.de>
parents: 549
diff changeset
148 map->size++;
89b2a83728b1 #189 basic map implementation
Mike Becker <universe@uap-core.de>
parents: 549
diff changeset
149 }
89b2a83728b1 #189 basic map implementation
Mike Becker <universe@uap-core.de>
parents: 549
diff changeset
150
89b2a83728b1 #189 basic map implementation
Mike Becker <universe@uap-core.de>
parents: 549
diff changeset
151 return 0;
89b2a83728b1 #189 basic map implementation
Mike Becker <universe@uap-core.de>
parents: 549
diff changeset
152 }
549
d7f0b5a9a985 #189 declare basic map functions
Mike Becker <universe@uap-core.de>
parents:
diff changeset
153
551
2946e13c89a4 #189 implement map iterators
Mike Becker <universe@uap-core.de>
parents: 550
diff changeset
154 static void cx_hash_map_unlink(
2946e13c89a4 #189 implement map iterators
Mike Becker <universe@uap-core.de>
parents: 550
diff changeset
155 struct cx_hash_map_s *hash_map,
2946e13c89a4 #189 implement map iterators
Mike Becker <universe@uap-core.de>
parents: 550
diff changeset
156 size_t slot,
2946e13c89a4 #189 implement map iterators
Mike Becker <universe@uap-core.de>
parents: 550
diff changeset
157 struct cx_hash_map_element_s *prev,
2946e13c89a4 #189 implement map iterators
Mike Becker <universe@uap-core.de>
parents: 550
diff changeset
158 struct cx_hash_map_element_s *elm
2946e13c89a4 #189 implement map iterators
Mike Becker <universe@uap-core.de>
parents: 550
diff changeset
159 ) {
2946e13c89a4 #189 implement map iterators
Mike Becker <universe@uap-core.de>
parents: 550
diff changeset
160 // unlink
2946e13c89a4 #189 implement map iterators
Mike Becker <universe@uap-core.de>
parents: 550
diff changeset
161 if (prev == NULL) {
2946e13c89a4 #189 implement map iterators
Mike Becker <universe@uap-core.de>
parents: 550
diff changeset
162 hash_map->buckets[slot] = elm->next;
2946e13c89a4 #189 implement map iterators
Mike Becker <universe@uap-core.de>
parents: 550
diff changeset
163 } else {
2946e13c89a4 #189 implement map iterators
Mike Becker <universe@uap-core.de>
parents: 550
diff changeset
164 prev->next = elm->next;
2946e13c89a4 #189 implement map iterators
Mike Becker <universe@uap-core.de>
parents: 550
diff changeset
165 }
2946e13c89a4 #189 implement map iterators
Mike Becker <universe@uap-core.de>
parents: 550
diff changeset
166 // free element
690
2c2304622981 simplify CxHashKey
Mike Becker <universe@uap-core.de>
parents: 688
diff changeset
167 cxFree(hash_map->base.allocator, (void *) elm->key.data);
551
2946e13c89a4 #189 implement map iterators
Mike Becker <universe@uap-core.de>
parents: 550
diff changeset
168 cxFree(hash_map->base.allocator, elm);
2946e13c89a4 #189 implement map iterators
Mike Becker <universe@uap-core.de>
parents: 550
diff changeset
169 // decrease size
2946e13c89a4 #189 implement map iterators
Mike Becker <universe@uap-core.de>
parents: 550
diff changeset
170 hash_map->base.size--;
2946e13c89a4 #189 implement map iterators
Mike Becker <universe@uap-core.de>
parents: 550
diff changeset
171 }
2946e13c89a4 #189 implement map iterators
Mike Becker <universe@uap-core.de>
parents: 550
diff changeset
172
549
d7f0b5a9a985 #189 declare basic map functions
Mike Becker <universe@uap-core.de>
parents:
diff changeset
173 /**
550
89b2a83728b1 #189 basic map implementation
Mike Becker <universe@uap-core.de>
parents: 549
diff changeset
174 * Helper function to avoid code duplication.
549
d7f0b5a9a985 #189 declare basic map functions
Mike Becker <universe@uap-core.de>
parents:
diff changeset
175 *
550
89b2a83728b1 #189 basic map implementation
Mike Becker <universe@uap-core.de>
parents: 549
diff changeset
176 * @param map the map
89b2a83728b1 #189 basic map implementation
Mike Becker <universe@uap-core.de>
parents: 549
diff changeset
177 * @param key the key to look up
89b2a83728b1 #189 basic map implementation
Mike Becker <universe@uap-core.de>
parents: 549
diff changeset
178 * @param remove flag indicating whether the looked up entry shall be removed
686
64919f63f059 add destructor functions for maps - fixes #253
Mike Becker <universe@uap-core.de>
parents: 685
diff changeset
179 * @param destroy flag indicating whether the destructor shall be invoked
658
56c62780582e make hashmap store objects instead of pointers by default - fixes #239
Mike Becker <universe@uap-core.de>
parents: 630
diff changeset
180 * @return a pointer to the value corresponding to the key or \c NULL
549
d7f0b5a9a985 #189 declare basic map functions
Mike Becker <universe@uap-core.de>
parents:
diff changeset
181 */
550
89b2a83728b1 #189 basic map implementation
Mike Becker <universe@uap-core.de>
parents: 549
diff changeset
182 static void *cx_hash_map_get_remove(
89b2a83728b1 #189 basic map implementation
Mike Becker <universe@uap-core.de>
parents: 549
diff changeset
183 CxMap *map,
563
69a83fad8a35 improve hash key handling
Mike Becker <universe@uap-core.de>
parents: 562
diff changeset
184 CxHashKey key,
686
64919f63f059 add destructor functions for maps - fixes #253
Mike Becker <universe@uap-core.de>
parents: 685
diff changeset
185 bool remove,
64919f63f059 add destructor functions for maps - fixes #253
Mike Becker <universe@uap-core.de>
parents: 685
diff changeset
186 bool destroy
550
89b2a83728b1 #189 basic map implementation
Mike Becker <universe@uap-core.de>
parents: 549
diff changeset
187 ) {
89b2a83728b1 #189 basic map implementation
Mike Becker <universe@uap-core.de>
parents: 549
diff changeset
188 struct cx_hash_map_s *hash_map = (struct cx_hash_map_s *) map;
89b2a83728b1 #189 basic map implementation
Mike Becker <universe@uap-core.de>
parents: 549
diff changeset
189
563
69a83fad8a35 improve hash key handling
Mike Becker <universe@uap-core.de>
parents: 562
diff changeset
190 unsigned hash = key.hash;
69a83fad8a35 improve hash key handling
Mike Becker <universe@uap-core.de>
parents: 562
diff changeset
191 if (hash == 0) {
69a83fad8a35 improve hash key handling
Mike Becker <universe@uap-core.de>
parents: 562
diff changeset
192 cx_hash_murmur(&key);
69a83fad8a35 improve hash key handling
Mike Becker <universe@uap-core.de>
parents: 562
diff changeset
193 hash = key.hash;
69a83fad8a35 improve hash key handling
Mike Becker <universe@uap-core.de>
parents: 562
diff changeset
194 }
550
89b2a83728b1 #189 basic map implementation
Mike Becker <universe@uap-core.de>
parents: 549
diff changeset
195
89b2a83728b1 #189 basic map implementation
Mike Becker <universe@uap-core.de>
parents: 549
diff changeset
196 size_t slot = hash % hash_map->bucket_count;
89b2a83728b1 #189 basic map implementation
Mike Becker <universe@uap-core.de>
parents: 549
diff changeset
197 struct cx_hash_map_element_s *elm = hash_map->buckets[slot];
89b2a83728b1 #189 basic map implementation
Mike Becker <universe@uap-core.de>
parents: 549
diff changeset
198 struct cx_hash_map_element_s *prev = NULL;
89b2a83728b1 #189 basic map implementation
Mike Becker <universe@uap-core.de>
parents: 549
diff changeset
199 while (elm && elm->key.hash <= hash) {
89b2a83728b1 #189 basic map implementation
Mike Becker <universe@uap-core.de>
parents: 549
diff changeset
200 if (elm->key.hash == hash && elm->key.len == key.len) {
690
2c2304622981 simplify CxHashKey
Mike Becker <universe@uap-core.de>
parents: 688
diff changeset
201 if (memcmp(elm->key.data, key.data, key.len) == 0) {
658
56c62780582e make hashmap store objects instead of pointers by default - fixes #239
Mike Becker <universe@uap-core.de>
parents: 630
diff changeset
202 void *data = NULL;
686
64919f63f059 add destructor functions for maps - fixes #253
Mike Becker <universe@uap-core.de>
parents: 685
diff changeset
203 if (destroy) {
64919f63f059 add destructor functions for maps - fixes #253
Mike Becker <universe@uap-core.de>
parents: 685
diff changeset
204 cx_invoke_destructor(map, elm->data);
64919f63f059 add destructor functions for maps - fixes #253
Mike Becker <universe@uap-core.de>
parents: 685
diff changeset
205 } else {
64919f63f059 add destructor functions for maps - fixes #253
Mike Becker <universe@uap-core.de>
parents: 685
diff changeset
206 if (map->store_pointer) {
64919f63f059 add destructor functions for maps - fixes #253
Mike Becker <universe@uap-core.de>
parents: 685
diff changeset
207 data = *(void **) elm->data;
64919f63f059 add destructor functions for maps - fixes #253
Mike Becker <universe@uap-core.de>
parents: 685
diff changeset
208 } else {
64919f63f059 add destructor functions for maps - fixes #253
Mike Becker <universe@uap-core.de>
parents: 685
diff changeset
209 data = elm->data;
64919f63f059 add destructor functions for maps - fixes #253
Mike Becker <universe@uap-core.de>
parents: 685
diff changeset
210 }
658
56c62780582e make hashmap store objects instead of pointers by default - fixes #239
Mike Becker <universe@uap-core.de>
parents: 630
diff changeset
211 }
550
89b2a83728b1 #189 basic map implementation
Mike Becker <universe@uap-core.de>
parents: 549
diff changeset
212 if (remove) {
551
2946e13c89a4 #189 implement map iterators
Mike Becker <universe@uap-core.de>
parents: 550
diff changeset
213 cx_hash_map_unlink(hash_map, slot, prev, elm);
550
89b2a83728b1 #189 basic map implementation
Mike Becker <universe@uap-core.de>
parents: 549
diff changeset
214 }
89b2a83728b1 #189 basic map implementation
Mike Becker <universe@uap-core.de>
parents: 549
diff changeset
215 return data;
89b2a83728b1 #189 basic map implementation
Mike Becker <universe@uap-core.de>
parents: 549
diff changeset
216 }
89b2a83728b1 #189 basic map implementation
Mike Becker <universe@uap-core.de>
parents: 549
diff changeset
217 }
89b2a83728b1 #189 basic map implementation
Mike Becker <universe@uap-core.de>
parents: 549
diff changeset
218 prev = elm;
89b2a83728b1 #189 basic map implementation
Mike Becker <universe@uap-core.de>
parents: 549
diff changeset
219 elm = prev->next;
89b2a83728b1 #189 basic map implementation
Mike Becker <universe@uap-core.de>
parents: 549
diff changeset
220 }
89b2a83728b1 #189 basic map implementation
Mike Becker <universe@uap-core.de>
parents: 549
diff changeset
221
89b2a83728b1 #189 basic map implementation
Mike Becker <universe@uap-core.de>
parents: 549
diff changeset
222 return NULL;
89b2a83728b1 #189 basic map implementation
Mike Becker <universe@uap-core.de>
parents: 549
diff changeset
223 }
89b2a83728b1 #189 basic map implementation
Mike Becker <universe@uap-core.de>
parents: 549
diff changeset
224
89b2a83728b1 #189 basic map implementation
Mike Becker <universe@uap-core.de>
parents: 549
diff changeset
225 static void *cx_hash_map_get(
89b2a83728b1 #189 basic map implementation
Mike Becker <universe@uap-core.de>
parents: 549
diff changeset
226 CxMap const *map,
563
69a83fad8a35 improve hash key handling
Mike Becker <universe@uap-core.de>
parents: 562
diff changeset
227 CxHashKey key
550
89b2a83728b1 #189 basic map implementation
Mike Becker <universe@uap-core.de>
parents: 549
diff changeset
228 ) {
688
c27fa8b67286 serious code formatting problems ;-)
Mike Becker <universe@uap-core.de>
parents: 686
diff changeset
229 // we can safely cast, because we know the map stays untouched
686
64919f63f059 add destructor functions for maps - fixes #253
Mike Becker <universe@uap-core.de>
parents: 685
diff changeset
230 return cx_hash_map_get_remove((CxMap *) map, key, false, false);
550
89b2a83728b1 #189 basic map implementation
Mike Becker <universe@uap-core.de>
parents: 549
diff changeset
231 }
89b2a83728b1 #189 basic map implementation
Mike Becker <universe@uap-core.de>
parents: 549
diff changeset
232
89b2a83728b1 #189 basic map implementation
Mike Becker <universe@uap-core.de>
parents: 549
diff changeset
233 static void *cx_hash_map_remove(
89b2a83728b1 #189 basic map implementation
Mike Becker <universe@uap-core.de>
parents: 549
diff changeset
234 CxMap *map,
686
64919f63f059 add destructor functions for maps - fixes #253
Mike Becker <universe@uap-core.de>
parents: 685
diff changeset
235 CxHashKey key,
64919f63f059 add destructor functions for maps - fixes #253
Mike Becker <universe@uap-core.de>
parents: 685
diff changeset
236 bool destroy
550
89b2a83728b1 #189 basic map implementation
Mike Becker <universe@uap-core.de>
parents: 549
diff changeset
237 ) {
686
64919f63f059 add destructor functions for maps - fixes #253
Mike Becker <universe@uap-core.de>
parents: 685
diff changeset
238 return cx_hash_map_get_remove(map, key, true, destroy);
549
d7f0b5a9a985 #189 declare basic map functions
Mike Becker <universe@uap-core.de>
parents:
diff changeset
239 }
550
89b2a83728b1 #189 basic map implementation
Mike Becker <universe@uap-core.de>
parents: 549
diff changeset
240
630
ac5e7f789048 separate iterators and mutating iterators
Mike Becker <universe@uap-core.de>
parents: 575
diff changeset
241 static void *cx_hash_map_iter_current_entry(void const *it) {
ac5e7f789048 separate iterators and mutating iterators
Mike Becker <universe@uap-core.de>
parents: 575
diff changeset
242 struct cx_iterator_s const *iter = it;
551
2946e13c89a4 #189 implement map iterators
Mike Becker <universe@uap-core.de>
parents: 550
diff changeset
243 // struct has to have a compatible signature
573
3f3a0d19db58 remove unused variable (return immediately)
Mike Becker <universe@uap-core.de>
parents: 563
diff changeset
244 return (struct cx_map_entry_s *) &(iter->kv_data);
551
2946e13c89a4 #189 implement map iterators
Mike Becker <universe@uap-core.de>
parents: 550
diff changeset
245 }
2946e13c89a4 #189 implement map iterators
Mike Becker <universe@uap-core.de>
parents: 550
diff changeset
246
630
ac5e7f789048 separate iterators and mutating iterators
Mike Becker <universe@uap-core.de>
parents: 575
diff changeset
247 static void *cx_hash_map_iter_current_key(void const *it) {
ac5e7f789048 separate iterators and mutating iterators
Mike Becker <universe@uap-core.de>
parents: 575
diff changeset
248 struct cx_iterator_s const *iter = it;
551
2946e13c89a4 #189 implement map iterators
Mike Becker <universe@uap-core.de>
parents: 550
diff changeset
249 struct cx_hash_map_element_s *elm = iter->elem_handle;
2946e13c89a4 #189 implement map iterators
Mike Becker <universe@uap-core.de>
parents: 550
diff changeset
250 return &elm->key;
2946e13c89a4 #189 implement map iterators
Mike Becker <universe@uap-core.de>
parents: 550
diff changeset
251 }
2946e13c89a4 #189 implement map iterators
Mike Becker <universe@uap-core.de>
parents: 550
diff changeset
252
630
ac5e7f789048 separate iterators and mutating iterators
Mike Becker <universe@uap-core.de>
parents: 575
diff changeset
253 static void *cx_hash_map_iter_current_value(void const *it) {
ac5e7f789048 separate iterators and mutating iterators
Mike Becker <universe@uap-core.de>
parents: 575
diff changeset
254 struct cx_iterator_s const *iter = it;
658
56c62780582e make hashmap store objects instead of pointers by default - fixes #239
Mike Becker <universe@uap-core.de>
parents: 630
diff changeset
255 struct cx_hash_map_s const *map = iter->src_handle;
551
2946e13c89a4 #189 implement map iterators
Mike Becker <universe@uap-core.de>
parents: 550
diff changeset
256 struct cx_hash_map_element_s *elm = iter->elem_handle;
685
2dd841e364af add base collection members to map interface
Mike Becker <universe@uap-core.de>
parents: 677
diff changeset
257 if (map->base.store_pointer) {
658
56c62780582e make hashmap store objects instead of pointers by default - fixes #239
Mike Becker <universe@uap-core.de>
parents: 630
diff changeset
258 return *(void **) elm->data;
56c62780582e make hashmap store objects instead of pointers by default - fixes #239
Mike Becker <universe@uap-core.de>
parents: 630
diff changeset
259 } else {
56c62780582e make hashmap store objects instead of pointers by default - fixes #239
Mike Becker <universe@uap-core.de>
parents: 630
diff changeset
260 return elm->data;
56c62780582e make hashmap store objects instead of pointers by default - fixes #239
Mike Becker <universe@uap-core.de>
parents: 630
diff changeset
261 }
551
2946e13c89a4 #189 implement map iterators
Mike Becker <universe@uap-core.de>
parents: 550
diff changeset
262 }
2946e13c89a4 #189 implement map iterators
Mike Becker <universe@uap-core.de>
parents: 550
diff changeset
263
630
ac5e7f789048 separate iterators and mutating iterators
Mike Becker <universe@uap-core.de>
parents: 575
diff changeset
264 static bool cx_hash_map_iter_valid(void const *it) {
ac5e7f789048 separate iterators and mutating iterators
Mike Becker <universe@uap-core.de>
parents: 575
diff changeset
265 struct cx_iterator_s const *iter = it;
551
2946e13c89a4 #189 implement map iterators
Mike Becker <universe@uap-core.de>
parents: 550
diff changeset
266 return iter->elem_handle != NULL;
2946e13c89a4 #189 implement map iterators
Mike Becker <universe@uap-core.de>
parents: 550
diff changeset
267 }
2946e13c89a4 #189 implement map iterators
Mike Becker <universe@uap-core.de>
parents: 550
diff changeset
268
630
ac5e7f789048 separate iterators and mutating iterators
Mike Becker <universe@uap-core.de>
parents: 575
diff changeset
269 static void cx_hash_map_iter_next(void *it) {
ac5e7f789048 separate iterators and mutating iterators
Mike Becker <universe@uap-core.de>
parents: 575
diff changeset
270 struct cx_iterator_s *iter = it;
551
2946e13c89a4 #189 implement map iterators
Mike Becker <universe@uap-core.de>
parents: 550
diff changeset
271 struct cx_hash_map_element_s *elm = iter->elem_handle;
2946e13c89a4 #189 implement map iterators
Mike Becker <universe@uap-core.de>
parents: 550
diff changeset
272
2946e13c89a4 #189 implement map iterators
Mike Becker <universe@uap-core.de>
parents: 550
diff changeset
273 // remove current element, if asked
630
ac5e7f789048 separate iterators and mutating iterators
Mike Becker <universe@uap-core.de>
parents: 575
diff changeset
274 if (iter->base.remove) {
ac5e7f789048 separate iterators and mutating iterators
Mike Becker <universe@uap-core.de>
parents: 575
diff changeset
275 // obtain mutable pointer to the map
ac5e7f789048 separate iterators and mutating iterators
Mike Becker <universe@uap-core.de>
parents: 575
diff changeset
276 struct cx_mut_iterator_s *miter = it;
ac5e7f789048 separate iterators and mutating iterators
Mike Becker <universe@uap-core.de>
parents: 575
diff changeset
277 struct cx_hash_map_s *map = miter->src_handle;
ac5e7f789048 separate iterators and mutating iterators
Mike Becker <universe@uap-core.de>
parents: 575
diff changeset
278
551
2946e13c89a4 #189 implement map iterators
Mike Becker <universe@uap-core.de>
parents: 550
diff changeset
279 // clear the flag
630
ac5e7f789048 separate iterators and mutating iterators
Mike Becker <universe@uap-core.de>
parents: 575
diff changeset
280 iter->base.remove = false;
551
2946e13c89a4 #189 implement map iterators
Mike Becker <universe@uap-core.de>
parents: 550
diff changeset
281
2946e13c89a4 #189 implement map iterators
Mike Becker <universe@uap-core.de>
parents: 550
diff changeset
282 // determine the next element
2946e13c89a4 #189 implement map iterators
Mike Becker <universe@uap-core.de>
parents: 550
diff changeset
283 struct cx_hash_map_element_s *next = elm->next;
2946e13c89a4 #189 implement map iterators
Mike Becker <universe@uap-core.de>
parents: 550
diff changeset
284
2946e13c89a4 #189 implement map iterators
Mike Becker <universe@uap-core.de>
parents: 550
diff changeset
285 // search the previous element
2946e13c89a4 #189 implement map iterators
Mike Becker <universe@uap-core.de>
parents: 550
diff changeset
286 struct cx_hash_map_element_s *prev = NULL;
2946e13c89a4 #189 implement map iterators
Mike Becker <universe@uap-core.de>
parents: 550
diff changeset
287 if (map->buckets[iter->slot] != elm) {
2946e13c89a4 #189 implement map iterators
Mike Becker <universe@uap-core.de>
parents: 550
diff changeset
288 prev = map->buckets[iter->slot];
2946e13c89a4 #189 implement map iterators
Mike Becker <universe@uap-core.de>
parents: 550
diff changeset
289 while (prev->next != elm) {
2946e13c89a4 #189 implement map iterators
Mike Becker <universe@uap-core.de>
parents: 550
diff changeset
290 prev = prev->next;
2946e13c89a4 #189 implement map iterators
Mike Becker <universe@uap-core.de>
parents: 550
diff changeset
291 }
2946e13c89a4 #189 implement map iterators
Mike Becker <universe@uap-core.de>
parents: 550
diff changeset
292 }
2946e13c89a4 #189 implement map iterators
Mike Becker <universe@uap-core.de>
parents: 550
diff changeset
293
686
64919f63f059 add destructor functions for maps - fixes #253
Mike Becker <universe@uap-core.de>
parents: 685
diff changeset
294 // destroy
64919f63f059 add destructor functions for maps - fixes #253
Mike Becker <universe@uap-core.de>
parents: 685
diff changeset
295 cx_invoke_destructor((struct cx_map_s *) map, elm->data);
64919f63f059 add destructor functions for maps - fixes #253
Mike Becker <universe@uap-core.de>
parents: 685
diff changeset
296
551
2946e13c89a4 #189 implement map iterators
Mike Becker <universe@uap-core.de>
parents: 550
diff changeset
297 // unlink
2946e13c89a4 #189 implement map iterators
Mike Becker <universe@uap-core.de>
parents: 550
diff changeset
298 cx_hash_map_unlink(map, iter->slot, prev, elm);
2946e13c89a4 #189 implement map iterators
Mike Becker <universe@uap-core.de>
parents: 550
diff changeset
299
2946e13c89a4 #189 implement map iterators
Mike Becker <universe@uap-core.de>
parents: 550
diff changeset
300 // advance
2946e13c89a4 #189 implement map iterators
Mike Becker <universe@uap-core.de>
parents: 550
diff changeset
301 elm = next;
2946e13c89a4 #189 implement map iterators
Mike Becker <universe@uap-core.de>
parents: 550
diff changeset
302 } else {
2946e13c89a4 #189 implement map iterators
Mike Becker <universe@uap-core.de>
parents: 550
diff changeset
303 // just advance
2946e13c89a4 #189 implement map iterators
Mike Becker <universe@uap-core.de>
parents: 550
diff changeset
304 elm = elm->next;
560
2d6a3e2dc8ff fix wrong slot and index numbers
Mike Becker <universe@uap-core.de>
parents: 557
diff changeset
305 iter->index++;
551
2946e13c89a4 #189 implement map iterators
Mike Becker <universe@uap-core.de>
parents: 550
diff changeset
306 }
2946e13c89a4 #189 implement map iterators
Mike Becker <universe@uap-core.de>
parents: 550
diff changeset
307
560
2d6a3e2dc8ff fix wrong slot and index numbers
Mike Becker <universe@uap-core.de>
parents: 557
diff changeset
308 // search the next bucket, if required
630
ac5e7f789048 separate iterators and mutating iterators
Mike Becker <universe@uap-core.de>
parents: 575
diff changeset
309 struct cx_hash_map_s const *map = iter->src_handle;
560
2d6a3e2dc8ff fix wrong slot and index numbers
Mike Becker <universe@uap-core.de>
parents: 557
diff changeset
310 while (elm == NULL && ++iter->slot < map->bucket_count) {
2d6a3e2dc8ff fix wrong slot and index numbers
Mike Becker <universe@uap-core.de>
parents: 557
diff changeset
311 elm = map->buckets[iter->slot];
551
2946e13c89a4 #189 implement map iterators
Mike Becker <universe@uap-core.de>
parents: 550
diff changeset
312 }
2946e13c89a4 #189 implement map iterators
Mike Becker <universe@uap-core.de>
parents: 550
diff changeset
313
560
2d6a3e2dc8ff fix wrong slot and index numbers
Mike Becker <universe@uap-core.de>
parents: 557
diff changeset
314 // fill the struct with the next element
551
2946e13c89a4 #189 implement map iterators
Mike Becker <universe@uap-core.de>
parents: 550
diff changeset
315 iter->elem_handle = elm;
2946e13c89a4 #189 implement map iterators
Mike Becker <universe@uap-core.de>
parents: 550
diff changeset
316 if (elm == NULL) {
2946e13c89a4 #189 implement map iterators
Mike Becker <universe@uap-core.de>
parents: 550
diff changeset
317 iter->kv_data.key = NULL;
2946e13c89a4 #189 implement map iterators
Mike Becker <universe@uap-core.de>
parents: 550
diff changeset
318 iter->kv_data.value = NULL;
2946e13c89a4 #189 implement map iterators
Mike Becker <universe@uap-core.de>
parents: 550
diff changeset
319 } else {
2946e13c89a4 #189 implement map iterators
Mike Becker <universe@uap-core.de>
parents: 550
diff changeset
320 iter->kv_data.key = &elm->key;
685
2dd841e364af add base collection members to map interface
Mike Becker <universe@uap-core.de>
parents: 677
diff changeset
321 if (map->base.store_pointer) {
658
56c62780582e make hashmap store objects instead of pointers by default - fixes #239
Mike Becker <universe@uap-core.de>
parents: 630
diff changeset
322 iter->kv_data.value = *(void **) elm->data;
56c62780582e make hashmap store objects instead of pointers by default - fixes #239
Mike Becker <universe@uap-core.de>
parents: 630
diff changeset
323 } else {
56c62780582e make hashmap store objects instead of pointers by default - fixes #239
Mike Becker <universe@uap-core.de>
parents: 630
diff changeset
324 iter->kv_data.value = elm->data;
56c62780582e make hashmap store objects instead of pointers by default - fixes #239
Mike Becker <universe@uap-core.de>
parents: 630
diff changeset
325 }
551
2946e13c89a4 #189 implement map iterators
Mike Becker <universe@uap-core.de>
parents: 550
diff changeset
326 }
2946e13c89a4 #189 implement map iterators
Mike Becker <universe@uap-core.de>
parents: 550
diff changeset
327 }
2946e13c89a4 #189 implement map iterators
Mike Becker <universe@uap-core.de>
parents: 550
diff changeset
328
709
1e8ba59e7911 simplify map class structure
Mike Becker <universe@uap-core.de>
parents: 691
diff changeset
329 static CxIterator cx_hash_map_iterator(
1e8ba59e7911 simplify map class structure
Mike Becker <universe@uap-core.de>
parents: 691
diff changeset
330 CxMap const *map,
1e8ba59e7911 simplify map class structure
Mike Becker <universe@uap-core.de>
parents: 691
diff changeset
331 enum cx_map_iterator_type type
1e8ba59e7911 simplify map class structure
Mike Becker <universe@uap-core.de>
parents: 691
diff changeset
332 ) {
550
89b2a83728b1 #189 basic map implementation
Mike Becker <universe@uap-core.de>
parents: 549
diff changeset
333 CxIterator iter;
551
2946e13c89a4 #189 implement map iterators
Mike Becker <universe@uap-core.de>
parents: 550
diff changeset
334
2946e13c89a4 #189 implement map iterators
Mike Becker <universe@uap-core.de>
parents: 550
diff changeset
335 iter.src_handle = map;
630
ac5e7f789048 separate iterators and mutating iterators
Mike Becker <universe@uap-core.de>
parents: 575
diff changeset
336 iter.base.valid = cx_hash_map_iter_valid;
ac5e7f789048 separate iterators and mutating iterators
Mike Becker <universe@uap-core.de>
parents: 575
diff changeset
337 iter.base.next = cx_hash_map_iter_next;
709
1e8ba59e7911 simplify map class structure
Mike Becker <universe@uap-core.de>
parents: 691
diff changeset
338
1e8ba59e7911 simplify map class structure
Mike Becker <universe@uap-core.de>
parents: 691
diff changeset
339 switch (type) {
1e8ba59e7911 simplify map class structure
Mike Becker <universe@uap-core.de>
parents: 691
diff changeset
340 case CX_MAP_ITERATOR_PAIRS:
1e8ba59e7911 simplify map class structure
Mike Becker <universe@uap-core.de>
parents: 691
diff changeset
341 iter.base.current = cx_hash_map_iter_current_entry;
1e8ba59e7911 simplify map class structure
Mike Becker <universe@uap-core.de>
parents: 691
diff changeset
342 break;
1e8ba59e7911 simplify map class structure
Mike Becker <universe@uap-core.de>
parents: 691
diff changeset
343 case CX_MAP_ITERATOR_KEYS:
1e8ba59e7911 simplify map class structure
Mike Becker <universe@uap-core.de>
parents: 691
diff changeset
344 iter.base.current = cx_hash_map_iter_current_key;
1e8ba59e7911 simplify map class structure
Mike Becker <universe@uap-core.de>
parents: 691
diff changeset
345 break;
1e8ba59e7911 simplify map class structure
Mike Becker <universe@uap-core.de>
parents: 691
diff changeset
346 case CX_MAP_ITERATOR_VALUES:
1e8ba59e7911 simplify map class structure
Mike Becker <universe@uap-core.de>
parents: 691
diff changeset
347 iter.base.current = cx_hash_map_iter_current_value;
1e8ba59e7911 simplify map class structure
Mike Becker <universe@uap-core.de>
parents: 691
diff changeset
348 break;
1e8ba59e7911 simplify map class structure
Mike Becker <universe@uap-core.de>
parents: 691
diff changeset
349 default:
1e8ba59e7911 simplify map class structure
Mike Becker <universe@uap-core.de>
parents: 691
diff changeset
350 assert(false);
1e8ba59e7911 simplify map class structure
Mike Becker <universe@uap-core.de>
parents: 691
diff changeset
351 }
1e8ba59e7911 simplify map class structure
Mike Becker <universe@uap-core.de>
parents: 691
diff changeset
352
630
ac5e7f789048 separate iterators and mutating iterators
Mike Becker <universe@uap-core.de>
parents: 575
diff changeset
353 iter.base.remove = false;
ac5e7f789048 separate iterators and mutating iterators
Mike Becker <universe@uap-core.de>
parents: 575
diff changeset
354 iter.base.mutating = false;
551
2946e13c89a4 #189 implement map iterators
Mike Becker <universe@uap-core.de>
parents: 550
diff changeset
355
2946e13c89a4 #189 implement map iterators
Mike Becker <universe@uap-core.de>
parents: 550
diff changeset
356 iter.slot = 0;
2946e13c89a4 #189 implement map iterators
Mike Becker <universe@uap-core.de>
parents: 550
diff changeset
357 iter.index = 0;
2946e13c89a4 #189 implement map iterators
Mike Becker <universe@uap-core.de>
parents: 550
diff changeset
358
2946e13c89a4 #189 implement map iterators
Mike Becker <universe@uap-core.de>
parents: 550
diff changeset
359 if (map->size > 0) {
2946e13c89a4 #189 implement map iterators
Mike Becker <universe@uap-core.de>
parents: 550
diff changeset
360 struct cx_hash_map_s *hash_map = (struct cx_hash_map_s *) map;
560
2d6a3e2dc8ff fix wrong slot and index numbers
Mike Becker <universe@uap-core.de>
parents: 557
diff changeset
361 struct cx_hash_map_element_s *elm = hash_map->buckets[0];
665
c4041b07165e fix hashmap iterator skipping the second element in some cases
Olaf Wintermann <olaf.wintermann@gmail.com>
parents: 658
diff changeset
362 while (elm == NULL) {
c4041b07165e fix hashmap iterator skipping the second element in some cases
Olaf Wintermann <olaf.wintermann@gmail.com>
parents: 658
diff changeset
363 elm = hash_map->buckets[++iter.slot];
551
2946e13c89a4 #189 implement map iterators
Mike Becker <universe@uap-core.de>
parents: 550
diff changeset
364 }
554
fd3d843b839d fix kv-pair not initialized
Mike Becker <universe@uap-core.de>
parents: 551
diff changeset
365 iter.elem_handle = elm;
fd3d843b839d fix kv-pair not initialized
Mike Becker <universe@uap-core.de>
parents: 551
diff changeset
366 iter.kv_data.key = &elm->key;
685
2dd841e364af add base collection members to map interface
Mike Becker <universe@uap-core.de>
parents: 677
diff changeset
367 if (map->store_pointer) {
658
56c62780582e make hashmap store objects instead of pointers by default - fixes #239
Mike Becker <universe@uap-core.de>
parents: 630
diff changeset
368 iter.kv_data.value = *(void **) elm->data;
56c62780582e make hashmap store objects instead of pointers by default - fixes #239
Mike Becker <universe@uap-core.de>
parents: 630
diff changeset
369 } else {
56c62780582e make hashmap store objects instead of pointers by default - fixes #239
Mike Becker <universe@uap-core.de>
parents: 630
diff changeset
370 iter.kv_data.value = elm->data;
56c62780582e make hashmap store objects instead of pointers by default - fixes #239
Mike Becker <universe@uap-core.de>
parents: 630
diff changeset
371 }
551
2946e13c89a4 #189 implement map iterators
Mike Becker <universe@uap-core.de>
parents: 550
diff changeset
372 } else {
2946e13c89a4 #189 implement map iterators
Mike Becker <universe@uap-core.de>
parents: 550
diff changeset
373 iter.elem_handle = NULL;
2946e13c89a4 #189 implement map iterators
Mike Becker <universe@uap-core.de>
parents: 550
diff changeset
374 iter.kv_data.key = NULL;
2946e13c89a4 #189 implement map iterators
Mike Becker <universe@uap-core.de>
parents: 550
diff changeset
375 iter.kv_data.value = NULL;
2946e13c89a4 #189 implement map iterators
Mike Becker <universe@uap-core.de>
parents: 550
diff changeset
376 }
2946e13c89a4 #189 implement map iterators
Mike Becker <universe@uap-core.de>
parents: 550
diff changeset
377
550
89b2a83728b1 #189 basic map implementation
Mike Becker <universe@uap-core.de>
parents: 549
diff changeset
378 return iter;
89b2a83728b1 #189 basic map implementation
Mike Becker <universe@uap-core.de>
parents: 549
diff changeset
379 }
89b2a83728b1 #189 basic map implementation
Mike Becker <universe@uap-core.de>
parents: 549
diff changeset
380
89b2a83728b1 #189 basic map implementation
Mike Becker <universe@uap-core.de>
parents: 549
diff changeset
381 static cx_map_class cx_hash_map_class = {
89b2a83728b1 #189 basic map implementation
Mike Becker <universe@uap-core.de>
parents: 549
diff changeset
382 cx_hash_map_destructor,
89b2a83728b1 #189 basic map implementation
Mike Becker <universe@uap-core.de>
parents: 549
diff changeset
383 cx_hash_map_clear,
89b2a83728b1 #189 basic map implementation
Mike Becker <universe@uap-core.de>
parents: 549
diff changeset
384 cx_hash_map_put,
89b2a83728b1 #189 basic map implementation
Mike Becker <universe@uap-core.de>
parents: 549
diff changeset
385 cx_hash_map_get,
89b2a83728b1 #189 basic map implementation
Mike Becker <universe@uap-core.de>
parents: 549
diff changeset
386 cx_hash_map_remove,
89b2a83728b1 #189 basic map implementation
Mike Becker <universe@uap-core.de>
parents: 549
diff changeset
387 cx_hash_map_iterator,
89b2a83728b1 #189 basic map implementation
Mike Becker <universe@uap-core.de>
parents: 549
diff changeset
388 };
89b2a83728b1 #189 basic map implementation
Mike Becker <universe@uap-core.de>
parents: 549
diff changeset
389
89b2a83728b1 #189 basic map implementation
Mike Becker <universe@uap-core.de>
parents: 549
diff changeset
390 CxMap *cxHashMapCreate(
691
65baf7f45ac8 bring a generic interface to CxMap
Mike Becker <universe@uap-core.de>
parents: 690
diff changeset
391 CxAllocator const *allocator,
658
56c62780582e make hashmap store objects instead of pointers by default - fixes #239
Mike Becker <universe@uap-core.de>
parents: 630
diff changeset
392 size_t itemsize,
550
89b2a83728b1 #189 basic map implementation
Mike Becker <universe@uap-core.de>
parents: 549
diff changeset
393 size_t buckets
89b2a83728b1 #189 basic map implementation
Mike Becker <universe@uap-core.de>
parents: 549
diff changeset
394 ) {
89b2a83728b1 #189 basic map implementation
Mike Becker <universe@uap-core.de>
parents: 549
diff changeset
395 if (buckets == 0) {
89b2a83728b1 #189 basic map implementation
Mike Becker <universe@uap-core.de>
parents: 549
diff changeset
396 // implementation defined default
89b2a83728b1 #189 basic map implementation
Mike Becker <universe@uap-core.de>
parents: 549
diff changeset
397 buckets = 16;
89b2a83728b1 #189 basic map implementation
Mike Becker <universe@uap-core.de>
parents: 549
diff changeset
398 }
89b2a83728b1 #189 basic map implementation
Mike Becker <universe@uap-core.de>
parents: 549
diff changeset
399
688
c27fa8b67286 serious code formatting problems ;-)
Mike Becker <universe@uap-core.de>
parents: 686
diff changeset
400 struct cx_hash_map_s *map = cxCalloc(allocator, 1,
c27fa8b67286 serious code formatting problems ;-)
Mike Becker <universe@uap-core.de>
parents: 686
diff changeset
401 sizeof(struct cx_hash_map_s));
550
89b2a83728b1 #189 basic map implementation
Mike Becker <universe@uap-core.de>
parents: 549
diff changeset
402 if (map == NULL) return NULL;
89b2a83728b1 #189 basic map implementation
Mike Becker <universe@uap-core.de>
parents: 549
diff changeset
403
89b2a83728b1 #189 basic map implementation
Mike Becker <universe@uap-core.de>
parents: 549
diff changeset
404 // initialize hash map members
89b2a83728b1 #189 basic map implementation
Mike Becker <universe@uap-core.de>
parents: 549
diff changeset
405 map->bucket_count = buckets;
688
c27fa8b67286 serious code formatting problems ;-)
Mike Becker <universe@uap-core.de>
parents: 686
diff changeset
406 map->buckets = cxCalloc(allocator, buckets,
c27fa8b67286 serious code formatting problems ;-)
Mike Becker <universe@uap-core.de>
parents: 686
diff changeset
407 sizeof(struct cx_hash_map_element_s *));
550
89b2a83728b1 #189 basic map implementation
Mike Becker <universe@uap-core.de>
parents: 549
diff changeset
408 if (map->buckets == NULL) {
89b2a83728b1 #189 basic map implementation
Mike Becker <universe@uap-core.de>
parents: 549
diff changeset
409 cxFree(allocator, map);
89b2a83728b1 #189 basic map implementation
Mike Becker <universe@uap-core.de>
parents: 549
diff changeset
410 return NULL;
89b2a83728b1 #189 basic map implementation
Mike Becker <universe@uap-core.de>
parents: 549
diff changeset
411 }
89b2a83728b1 #189 basic map implementation
Mike Becker <universe@uap-core.de>
parents: 549
diff changeset
412
89b2a83728b1 #189 basic map implementation
Mike Becker <universe@uap-core.de>
parents: 549
diff changeset
413 // initialize base members
89b2a83728b1 #189 basic map implementation
Mike Becker <universe@uap-core.de>
parents: 549
diff changeset
414 map->base.cl = &cx_hash_map_class;
89b2a83728b1 #189 basic map implementation
Mike Becker <universe@uap-core.de>
parents: 549
diff changeset
415 map->base.allocator = allocator;
668
d7129285ac32 add CX_STORE_POINTERS special item size for maps
Mike Becker <universe@uap-core.de>
parents: 665
diff changeset
416
d7129285ac32 add CX_STORE_POINTERS special item size for maps
Mike Becker <universe@uap-core.de>
parents: 665
diff changeset
417 if (itemsize > 0) {
685
2dd841e364af add base collection members to map interface
Mike Becker <universe@uap-core.de>
parents: 677
diff changeset
418 map->base.store_pointer = false;
677
b09aae58bba4 refactoring of collections to make use of destructors in map implementations
Mike Becker <universe@uap-core.de>
parents: 669
diff changeset
419 map->base.item_size = itemsize;
668
d7129285ac32 add CX_STORE_POINTERS special item size for maps
Mike Becker <universe@uap-core.de>
parents: 665
diff changeset
420 } else {
685
2dd841e364af add base collection members to map interface
Mike Becker <universe@uap-core.de>
parents: 677
diff changeset
421 map->base.store_pointer = true;
677
b09aae58bba4 refactoring of collections to make use of destructors in map implementations
Mike Becker <universe@uap-core.de>
parents: 669
diff changeset
422 map->base.item_size = sizeof(void *);
668
d7129285ac32 add CX_STORE_POINTERS special item size for maps
Mike Becker <universe@uap-core.de>
parents: 665
diff changeset
423 }
550
89b2a83728b1 #189 basic map implementation
Mike Becker <universe@uap-core.de>
parents: 549
diff changeset
424
89b2a83728b1 #189 basic map implementation
Mike Becker <universe@uap-core.de>
parents: 549
diff changeset
425 return (CxMap *) map;
89b2a83728b1 #189 basic map implementation
Mike Becker <universe@uap-core.de>
parents: 549
diff changeset
426 }
562
fd3368c20413 #189 #199 implement and test map rehash
Mike Becker <universe@uap-core.de>
parents: 560
diff changeset
427
fd3368c20413 #189 #199 implement and test map rehash
Mike Becker <universe@uap-core.de>
parents: 560
diff changeset
428 int cxMapRehash(CxMap *map) {
fd3368c20413 #189 #199 implement and test map rehash
Mike Becker <universe@uap-core.de>
parents: 560
diff changeset
429 struct cx_hash_map_s *hash_map = (struct cx_hash_map_s *) map;
fd3368c20413 #189 #199 implement and test map rehash
Mike Becker <universe@uap-core.de>
parents: 560
diff changeset
430 if (map->size > ((hash_map->bucket_count * 3) >> 2)) {
fd3368c20413 #189 #199 implement and test map rehash
Mike Becker <universe@uap-core.de>
parents: 560
diff changeset
431
fd3368c20413 #189 #199 implement and test map rehash
Mike Becker <universe@uap-core.de>
parents: 560
diff changeset
432 size_t new_bucket_count = (map->size * 5) >> 1;
688
c27fa8b67286 serious code formatting problems ;-)
Mike Becker <universe@uap-core.de>
parents: 686
diff changeset
433 struct cx_hash_map_element_s **new_buckets = cxCalloc(
c27fa8b67286 serious code formatting problems ;-)
Mike Becker <universe@uap-core.de>
parents: 686
diff changeset
434 map->allocator,
c27fa8b67286 serious code formatting problems ;-)
Mike Becker <universe@uap-core.de>
parents: 686
diff changeset
435 new_bucket_count, sizeof(struct cx_hash_map_element_s *)
c27fa8b67286 serious code formatting problems ;-)
Mike Becker <universe@uap-core.de>
parents: 686
diff changeset
436 );
562
fd3368c20413 #189 #199 implement and test map rehash
Mike Becker <universe@uap-core.de>
parents: 560
diff changeset
437
fd3368c20413 #189 #199 implement and test map rehash
Mike Becker <universe@uap-core.de>
parents: 560
diff changeset
438 if (new_buckets == NULL) {
fd3368c20413 #189 #199 implement and test map rehash
Mike Becker <universe@uap-core.de>
parents: 560
diff changeset
439 return 1;
fd3368c20413 #189 #199 implement and test map rehash
Mike Becker <universe@uap-core.de>
parents: 560
diff changeset
440 }
fd3368c20413 #189 #199 implement and test map rehash
Mike Becker <universe@uap-core.de>
parents: 560
diff changeset
441
fd3368c20413 #189 #199 implement and test map rehash
Mike Becker <universe@uap-core.de>
parents: 560
diff changeset
442 // iterate through the elements and assign them to their new slots
fd3368c20413 #189 #199 implement and test map rehash
Mike Becker <universe@uap-core.de>
parents: 560
diff changeset
443 cx_for_n(slot, hash_map->bucket_count) {
fd3368c20413 #189 #199 implement and test map rehash
Mike Becker <universe@uap-core.de>
parents: 560
diff changeset
444 struct cx_hash_map_element_s *elm = hash_map->buckets[slot];
fd3368c20413 #189 #199 implement and test map rehash
Mike Becker <universe@uap-core.de>
parents: 560
diff changeset
445 while (elm != NULL) {
fd3368c20413 #189 #199 implement and test map rehash
Mike Becker <universe@uap-core.de>
parents: 560
diff changeset
446 struct cx_hash_map_element_s *next = elm->next;
fd3368c20413 #189 #199 implement and test map rehash
Mike Becker <universe@uap-core.de>
parents: 560
diff changeset
447 size_t new_slot = elm->key.hash % new_bucket_count;
fd3368c20413 #189 #199 implement and test map rehash
Mike Becker <universe@uap-core.de>
parents: 560
diff changeset
448
fd3368c20413 #189 #199 implement and test map rehash
Mike Becker <universe@uap-core.de>
parents: 560
diff changeset
449 // find position where to insert
fd3368c20413 #189 #199 implement and test map rehash
Mike Becker <universe@uap-core.de>
parents: 560
diff changeset
450 struct cx_hash_map_element_s *bucket_next = new_buckets[new_slot];
fd3368c20413 #189 #199 implement and test map rehash
Mike Becker <universe@uap-core.de>
parents: 560
diff changeset
451 struct cx_hash_map_element_s *bucket_prev = NULL;
688
c27fa8b67286 serious code formatting problems ;-)
Mike Becker <universe@uap-core.de>
parents: 686
diff changeset
452 while (bucket_next != NULL &&
c27fa8b67286 serious code formatting problems ;-)
Mike Becker <universe@uap-core.de>
parents: 686
diff changeset
453 bucket_next->key.hash < elm->key.hash) {
562
fd3368c20413 #189 #199 implement and test map rehash
Mike Becker <universe@uap-core.de>
parents: 560
diff changeset
454 bucket_prev = bucket_next;
fd3368c20413 #189 #199 implement and test map rehash
Mike Becker <universe@uap-core.de>
parents: 560
diff changeset
455 bucket_next = bucket_next->next;
fd3368c20413 #189 #199 implement and test map rehash
Mike Becker <universe@uap-core.de>
parents: 560
diff changeset
456 }
fd3368c20413 #189 #199 implement and test map rehash
Mike Becker <universe@uap-core.de>
parents: 560
diff changeset
457
fd3368c20413 #189 #199 implement and test map rehash
Mike Becker <universe@uap-core.de>
parents: 560
diff changeset
458 // insert
fd3368c20413 #189 #199 implement and test map rehash
Mike Becker <universe@uap-core.de>
parents: 560
diff changeset
459 if (bucket_prev == NULL) {
fd3368c20413 #189 #199 implement and test map rehash
Mike Becker <universe@uap-core.de>
parents: 560
diff changeset
460 elm->next = new_buckets[new_slot];
fd3368c20413 #189 #199 implement and test map rehash
Mike Becker <universe@uap-core.de>
parents: 560
diff changeset
461 new_buckets[new_slot] = elm;
fd3368c20413 #189 #199 implement and test map rehash
Mike Becker <universe@uap-core.de>
parents: 560
diff changeset
462 } else {
fd3368c20413 #189 #199 implement and test map rehash
Mike Becker <universe@uap-core.de>
parents: 560
diff changeset
463 bucket_prev->next = elm;
fd3368c20413 #189 #199 implement and test map rehash
Mike Becker <universe@uap-core.de>
parents: 560
diff changeset
464 elm->next = bucket_next;
fd3368c20413 #189 #199 implement and test map rehash
Mike Becker <universe@uap-core.de>
parents: 560
diff changeset
465 }
fd3368c20413 #189 #199 implement and test map rehash
Mike Becker <universe@uap-core.de>
parents: 560
diff changeset
466
fd3368c20413 #189 #199 implement and test map rehash
Mike Becker <universe@uap-core.de>
parents: 560
diff changeset
467 // advance
fd3368c20413 #189 #199 implement and test map rehash
Mike Becker <universe@uap-core.de>
parents: 560
diff changeset
468 elm = next;
fd3368c20413 #189 #199 implement and test map rehash
Mike Becker <universe@uap-core.de>
parents: 560
diff changeset
469 }
fd3368c20413 #189 #199 implement and test map rehash
Mike Becker <universe@uap-core.de>
parents: 560
diff changeset
470 }
fd3368c20413 #189 #199 implement and test map rehash
Mike Becker <universe@uap-core.de>
parents: 560
diff changeset
471
fd3368c20413 #189 #199 implement and test map rehash
Mike Becker <universe@uap-core.de>
parents: 560
diff changeset
472 // assign result to the map
fd3368c20413 #189 #199 implement and test map rehash
Mike Becker <universe@uap-core.de>
parents: 560
diff changeset
473 hash_map->bucket_count = new_bucket_count;
fd3368c20413 #189 #199 implement and test map rehash
Mike Becker <universe@uap-core.de>
parents: 560
diff changeset
474 cxFree(map->allocator, hash_map->buckets);
fd3368c20413 #189 #199 implement and test map rehash
Mike Becker <universe@uap-core.de>
parents: 560
diff changeset
475 hash_map->buckets = new_buckets;
fd3368c20413 #189 #199 implement and test map rehash
Mike Becker <universe@uap-core.de>
parents: 560
diff changeset
476 }
fd3368c20413 #189 #199 implement and test map rehash
Mike Becker <universe@uap-core.de>
parents: 560
diff changeset
477 return 0;
fd3368c20413 #189 #199 implement and test map rehash
Mike Becker <universe@uap-core.de>
parents: 560
diff changeset
478 }

mercurial