summaryrefslogtreecommitdiff
path: root/lib/hash.h
blob: 715e53b51ce619543153599dd3b612432992d4ba (plain)
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
/* Hash routine.
   Copyright (C) 1998 Kunihiro Ishiguro

This file is part of GNU Zebra.

GNU Zebra is free software; you can redistribute it and/or modify
it under the terms of the GNU General Public License as published
by the Free Software Foundation; either version 2, or (at your
option) any later version.

GNU Zebra is distributed in the hope that it will be useful, but
WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
General Public License for more details.

You should have received a copy of the GNU General Public License
along with GNU Zebra; see the file COPYING.  If not, write to the
Free Software Foundation, Inc., 59 Temple Place - Suite 330,
Boston, MA 02111-1307, USA.  */

#ifndef _ZEBRA_HASH_H
#define _ZEBRA_HASH_H

/* Default hash table size.  */ 
#define HASHTABSIZE     1024

struct hash_backet
{
  /* Linked list.  */
  struct hash_backet *next;

  /* Hash key. */
  unsigned int key;

  /* Data.  */
  void *data;
};

struct hash
{
  /* Hash backet. */
  struct hash_backet **index;

  /* Hash table size. */
  unsigned int size;

  /* Key make function. */
  unsigned int (*hash_key) ();

  /* Data compare function. */
  int (*hash_cmp) ();

  /* Backet alloc. */
  unsigned long count;
};

struct hash *hash_create (unsigned int (*) (), int (*) ());
struct hash *hash_create_size (unsigned int, unsigned int (*) (), int (*) ());

void *hash_get (struct hash *, void *, void * (*) ());
void *hash_alloc_intern (void *);
void *hash_lookup (struct hash *, void *);
void *hash_release (struct hash *, void *);

void hash_iterate (struct hash *, 
		   void (*) (struct hash_backet *, void *), void *);

void hash_clean (struct hash *, void (*) (void *));
void hash_free (struct hash *);

#endif /* _ZEBRA_HASH_H */