1 /* Generic vector interface routine
2 * Copyright (C) 1997 Kunihiro Ishiguro
4 * This file is part of GNU Zebra.
6 * GNU Zebra is free software; you can redistribute it and/or modify it
7 * under the terms of the GNU General Public License as published by the
8 * Free Software Foundation; either version 2, or (at your option) any
11 * GNU Zebra is distributed in the hope that it will be useful, but
12 * WITHOUT ANY WARRANTY; without even the implied warranty of
13 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
14 * General Public License for more details.
16 * You should have received a copy of the GNU General Public License
17 * along with GNU Zebra; see the file COPYING. If not, write to the Free
18 * Software Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA
27 /* Initialize vector : allocate memory and return vector. */
29 vector_init (unsigned int size)
31 vector v = XCALLOC (MTYPE_VECTOR, sizeof (struct _vector));
33 /* allocate at least one slot */
39 v->index = XCALLOC (MTYPE_VECTOR_INDEX, sizeof (void *) * size);
44 vector_only_wrapper_free (vector v)
46 XFREE (MTYPE_VECTOR, v);
50 vector_only_index_free (void *index)
52 XFREE (MTYPE_VECTOR_INDEX, index);
56 vector_free (vector v)
58 XFREE (MTYPE_VECTOR_INDEX, v->index);
59 XFREE (MTYPE_VECTOR, v);
63 vector_copy (vector v)
66 vector new = XCALLOC (MTYPE_VECTOR, sizeof (struct _vector));
68 new->active = v->active;
69 new->alloced = v->alloced;
71 size = sizeof (void *) * (v->alloced);
72 new->index = XCALLOC (MTYPE_VECTOR_INDEX, size);
73 memcpy (new->index, v->index, size);
78 /* Check assigned index, and if it runs short double index pointer */
80 vector_ensure (vector v, unsigned int num)
85 v->index = XREALLOC (MTYPE_VECTOR_INDEX,
86 v->index, sizeof (void *) * (v->alloced * 2));
87 memset (&v->index[v->alloced], 0, sizeof (void *) * v->alloced);
90 if (v->alloced <= num)
91 vector_ensure (v, num);
94 /* This function only returns next empty slot index. It dose not mean
95 the slot's index memory is assigned, please call vector_ensure()
96 after calling this function. */
98 vector_empty_slot (vector v)
105 for (i = 0; i < v->active; i++)
106 if (v->index[i] == 0)
112 /* Set value to the smallest empty slot. */
114 vector_set (vector v, void *val)
118 i = vector_empty_slot (v);
119 vector_ensure (v, i);
129 /* Set value to specified index slot. */
131 vector_set_index (vector v, unsigned int i, void *val)
133 vector_ensure (v, i);
143 /* Look up vector. */
145 vector_lookup (vector v, unsigned int i)
152 /* Lookup vector, ensure it. */
154 vector_lookup_ensure (vector v, unsigned int i)
156 vector_ensure (v, i);
160 /* Unset value at specified index slot. */
162 vector_unset (vector v, unsigned int i)
169 if (i + 1 == v->active)
172 while (i && v->index[--i] == NULL && v->active--)
173 ; /* Is this ugly ? */
177 /* Count the number of not emplty slot. */
179 vector_count (vector v)
184 for (i = 0; i < v->active; i++)
185 if (v->index[i] != NULL)