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718e3744 | 1 | /* |
2 | * Generic vector interface header. | |
3 | * Copyright (C) 1997, 98 Kunihiro Ishiguro | |
4 | * | |
5 | * This file is part of GNU Zebra. | |
6 | * | |
7 | * GNU Zebra is free software; you can redistribute it and/or modify it | |
8 | * under the terms of the GNU General Public License as published by the | |
9 | * Free Software Foundation; either version 2, or (at your option) any | |
10 | * later version. | |
11 | * | |
12 | * GNU Zebra is distributed in the hope that it will be useful, but | |
13 | * WITHOUT ANY WARRANTY; without even the implied warranty of | |
14 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU | |
15 | * General Public License for more details. | |
16 | * | |
17 | * You should have received a copy of the GNU General Public License | |
18 | * along with GNU Zebra; see the file COPYING. If not, write to the Free | |
19 | * Software Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA | |
20 | * 02111-1307, USA. | |
21 | */ | |
22 | ||
23 | #ifndef _ZEBRA_VECTOR_H | |
24 | #define _ZEBRA_VECTOR_H | |
25 | ||
4a1ab8e4 | 26 | #include "memory.h" |
4a1ab8e4 | 27 | |
718e3744 | 28 | /* struct for vector */ |
29 | struct _vector | |
30 | { | |
55468c86 | 31 | unsigned int active; /* number of active slots */ |
718e3744 | 32 | unsigned int alloced; /* number of allocated slot */ |
33 | void **index; /* index to data */ | |
34 | }; | |
35 | typedef struct _vector *vector; | |
36 | ||
37 | #define VECTOR_MIN_SIZE 1 | |
38 | ||
39 | /* (Sometimes) usefull macros. This macro convert index expression to | |
40 | array expression. */ | |
55468c86 | 41 | /* Reference slot at given index, caller must ensure slot is active */ |
718e3744 | 42 | #define vector_slot(V,I) ((V)->index[(I)]) |
55468c86 | 43 | /* Number of active slots. |
44 | * Note that this differs from vector_count() as it the count returned | |
45 | * will include any empty slots | |
46 | */ | |
47 | #define vector_active(V) ((V)->active) | |
718e3744 | 48 | |
49 | /* Prototypes. */ | |
8cc4198f | 50 | extern vector vector_init (unsigned int size); |
51 | extern void vector_ensure (vector v, unsigned int num); | |
52 | extern int vector_empty_slot (vector v); | |
53 | extern int vector_set (vector v, void *val); | |
54 | extern int vector_set_index (vector v, unsigned int i, void *val); | |
55 | extern void vector_unset (vector v, unsigned int i); | |
56 | extern unsigned int vector_count (vector v); | |
8cc4198f | 57 | extern void vector_free (vector v); |
58 | extern vector vector_copy (vector v); | |
718e3744 | 59 | |
8cc4198f | 60 | extern void *vector_lookup (vector, unsigned int); |
61 | extern void *vector_lookup_ensure (vector, unsigned int); | |
718e3744 | 62 | |
63 | #endif /* _ZEBRA_VECTOR_H */ |