2 * collectd - src/utils_llist.c
3 * Copyright (C) 2006 Florian Forster <octo at collectd.org>
5 * Permission is hereby granted, free of charge, to any person obtaining a
6 * copy of this software and associated documentation files (the "Software"),
7 * to deal in the Software without restriction, including without limitation
8 * the rights to use, copy, modify, merge, publish, distribute, sublicense,
9 * and/or sell copies of the Software, and to permit persons to whom the
10 * Software is furnished to do so, subject to the following conditions:
12 * The above copyright notice and this permission notice shall be included in
13 * all copies or substantial portions of the Software.
15 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
16 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
17 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
18 * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
19 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
20 * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
21 * DEALINGS IN THE SOFTWARE.
24 * Florian Forster <octo at collectd.org>
30 #include "utils_llist.h"
45 llist_t *llist_create (void)
49 ret = calloc (1, sizeof (*ret));
56 void llist_destroy (llist_t *l)
64 for (e_this = l->head; e_this != NULL; e_this = e_next)
66 e_next = e_this->next;
67 llentry_destroy (e_this);
73 llentry_t *llentry_create (char *key, void *value)
77 e = malloc (sizeof (*e));
88 void llentry_destroy (llentry_t *e)
93 void llist_append (llist_t *l, llentry_t *e)
107 void llist_prepend (llist_t *l, llentry_t *e)
118 void llist_remove (llist_t *l, llentry_t *e)
122 if ((l == NULL) || (e == NULL))
126 while ((prev != NULL) && (prev->next != e))
130 prev->next = e->next;
139 int llist_size (llist_t *l)
141 return (l ? l->size : 0);
144 static int llist_strcmp (llentry_t *e, void *ud)
146 if ((e == NULL) || (ud == NULL))
148 return (strcmp (e->key, (const char *)ud));
151 llentry_t *llist_search (llist_t *l, const char *key)
153 return (llist_search_custom (l, llist_strcmp, (void *)key));
156 llentry_t *llist_search_custom (llist_t *l,
157 int (*compare) (llentry_t *, void *), void *user_data)
166 llentry_t *next = e->next;
168 if (compare (e, user_data) == 0)
177 llentry_t *llist_head (llist_t *l)
184 llentry_t *llist_tail (llist_t *l)