1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
|
/*****************************************************************************
* _ _ ____ _
* Project ___| | | | _ \| |
* / __| | | | |_) | |
* | (__| |_| | _ <| |___
* \___|\___/|_| \_\_____|
*
* Copyright (C) 2002, Daniel Stenberg, <daniel@haxx.se>, et al
*
* In order to be useful for every potential user, curl and libcurl are
* dual-licensed under the MPL and the MIT/X-derivate licenses.
*
* You may opt to use, copy, modify, merge, publish, distribute and/or sell
* copies of the Software, and permit persons to whom the Software is
* furnished to do so, under the terms of the MPL or the MIT/X-derivate
* licenses. You may pick one of these licenses.
*
* This software is distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY
* KIND, either express or implied.
*
* $Id$
*****************************************************************************/
#include "setup.h"
#include <string.h>
#include <stdlib.h>
#include "llist.h"
#ifdef MALLOCDEBUG
/* this must be the last include file */
#include "memdebug.h"
#endif
void
curl_llist_init(curl_llist *l, curl_llist_dtor dtor)
{
l->size = 0;
l->dtor = dtor;
l->head = NULL;
l->tail = NULL;
}
curl_llist *
curl_llist_alloc(curl_llist_dtor dtor)
{
curl_llist *list;
list = (curl_llist *)malloc(sizeof(curl_llist));
if(NULL == list)
return NULL;
curl_llist_init(list, dtor);
return list;
}
int
curl_llist_insert_next(curl_llist *list, curl_llist_element *e, const void *p)
{
curl_llist_element *ne;
ne = (curl_llist_element *) malloc(sizeof(curl_llist_element));
ne->ptr = (void *) p;
if (list->size == 0) {
list->head = ne;
list->head->prev = NULL;
list->head->next = NULL;
list->tail = ne;
} else {
ne->next = e->next;
ne->prev = e;
if (e->next) {
e->next->prev = ne;
} else {
list->tail = ne;
}
e->next = ne;
}
++list->size;
return 1;
}
int
curl_llist_insert_prev(curl_llist *list, curl_llist_element *e, const void *p)
{
curl_llist_element *ne;
ne = (curl_llist_element *) malloc(sizeof(curl_llist_element));
ne->ptr = (void *) p;
if (list->size == 0) {
list->head = ne;
list->head->prev = NULL;
list->head->next = NULL;
list->tail = ne;
} else {
ne->next = e;
ne->prev = e->prev;
if (e->prev)
e->prev->next = ne;
else
list->head = ne;
e->prev = ne;
}
++list->size;
return 1;
}
int
curl_llist_remove(curl_llist *list, curl_llist_element *e, void *user)
{
if (e == NULL || list->size == 0)
return 1;
if (e == list->head) {
list->head = e->next;
if (list->head == NULL)
list->tail = NULL;
else
e->next->prev = NULL;
} else {
e->prev->next = e->next;
if (!e->next)
list->tail = e->prev;
else
e->next->prev = e->prev;
}
list->dtor(user, e->ptr);
free(e);
--list->size;
return 1;
}
int
curl_llist_remove_next(curl_llist *list, curl_llist_element *e, void *user)
{
return curl_llist_remove(list, e->next, user);
}
int
curl_llist_remove_prev(curl_llist *list, curl_llist_element *e, void *user)
{
return curl_llist_remove(list, e->prev, user);
}
size_t
curl_llist_count(curl_llist *list)
{
return list->size;
}
void
curl_llist_destroy(curl_llist *list, void *user)
{
while (list->size > 0) {
curl_llist_remove(list, CURL_LLIST_TAIL(list), user);
}
free(list);
list = NULL;
}
|
