2 * Copyright (c) 2018 JANET(UK)
5 * Redistribution and use in source and binary forms, with or without
6 * modification, are permitted provided that the following conditions
9 * 1. Redistributions of source code must retain the above copyright
10 * notice, this list of conditions and the following disclaimer.
12 * 2. Redistributions in binary form must reproduce the above copyright
13 * notice, this list of conditions and the following disclaimer in the
14 * documentation and/or other materials provided with the distribution.
16 * 3. Neither the name of JANET(UK) nor the names of its contributors
17 * may be used to endorse or promote products derived from this software
18 * without specific prior written permission.
20 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
21 * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
22 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
23 * FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
24 * COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT,
25 * INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
26 * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
27 * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
28 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
29 * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
30 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
31 * OF THE POSSIBILITY OF SUCH DAMAGE.
37 static int tr_list_destructor(void *object)
39 TR_LIST *list = talloc_get_type_abort(object, TR_LIST);
41 g_ptr_array_unref(*list);
45 /* Note that the TR_LIST type is a pointer-to-pointer to
46 * a GPtrArray. This is done so that we can hook a talloc destructor
47 * to the list to ensure that the GLib reference count is handled correctly
48 * when used with talloc. */
49 TR_LIST *tr_list_new(TALLOC_CTX *mem_ctx)
51 TR_LIST *list = talloc(mem_ctx, TR_LIST);
53 *list = g_ptr_array_new();
58 talloc_set_destructor((void *)list, tr_list_destructor);
63 void tr_list_free(TR_LIST *list)
68 void *tr_list_add(TR_LIST *list, void *item)
70 guint old_len = (*list)->len;
71 g_ptr_array_add((*list), item);
73 if ((*list)->len == old_len)
74 return NULL; /* failed to add */
79 TR_LIST_ITER *tr_list_iter_new(TALLOC_CTX *mem_ctx)
81 TR_LIST_ITER *iter = talloc(mem_ctx, TR_LIST_ITER);
87 void tr_list_iter_free(TR_LIST_ITER *iter)
92 void *tr_list_iter_first(TR_LIST_ITER *iter, TR_LIST *list)
94 if (!iter || !list || (!(*list)))
99 return tr_list_iter_next(iter);
102 void *tr_list_iter_next(TR_LIST_ITER *iter)
107 if (iter->index < (*(iter->list))->len)
108 return g_ptr_array_index(*(iter->list), iter->index++);
112 void tr_list_foreach(TR_LIST *list, void (*function)(void *, void *), void *cookie)
114 g_ptr_array_foreach((*list), function, cookie);