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Annotation of embedaddon/quagga/lib/hash.h, revision 1.1.1.1

1.1       misho       1: /* Hash routine.
                      2:    Copyright (C) 1998 Kunihiro Ishiguro
                      3: 
                      4: This file is part of GNU Zebra.
                      5: 
                      6: GNU Zebra is free software; you can redistribute it and/or modify
                      7: it under the terms of the GNU General Public License as published
                      8: by the Free Software Foundation; either version 2, or (at your
                      9: option) any later version.
                     10: 
                     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.
                     15: 
                     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
                     18: Free Software Foundation, Inc., 59 Temple Place - Suite 330,
                     19: Boston, MA 02111-1307, USA.  */
                     20: 
                     21: #ifndef _ZEBRA_HASH_H
                     22: #define _ZEBRA_HASH_H
                     23: 
                     24: /* Default hash table size.  */ 
                     25: #define HASHTABSIZE     1024
                     26: 
                     27: struct hash_backet
                     28: {
                     29:   /* Linked list.  */
                     30:   struct hash_backet *next;
                     31: 
                     32:   /* Hash key. */
                     33:   unsigned int key;
                     34: 
                     35:   /* Data.  */
                     36:   void *data;
                     37: };
                     38: 
                     39: struct hash
                     40: {
                     41:   /* Hash backet. */
                     42:   struct hash_backet **index;
                     43: 
                     44:   /* Hash table size. */
                     45:   unsigned int size;
                     46: 
                     47:   /* Key make function. */
                     48:   unsigned int (*hash_key) (void *);
                     49: 
                     50:   /* Data compare function. */
                     51:   int (*hash_cmp) (const void *, const void *);
                     52: 
                     53:   /* Backet alloc. */
                     54:   unsigned long count;
                     55: };
                     56: 
                     57: extern struct hash *hash_create (unsigned int (*) (void *), 
                     58:                                 int (*) (const void *, const void *));
                     59: extern struct hash *hash_create_size (unsigned int, unsigned int (*) (void *), 
                     60:                                              int (*) (const void *, const void *));
                     61: 
                     62: extern void *hash_get (struct hash *, void *, void * (*) (void *));
                     63: extern void *hash_alloc_intern (void *);
                     64: extern void *hash_lookup (struct hash *, void *);
                     65: extern void *hash_release (struct hash *, void *);
                     66: 
                     67: extern void hash_iterate (struct hash *, 
                     68:                   void (*) (struct hash_backet *, void *), void *);
                     69: 
                     70: extern void hash_clean (struct hash *, void (*) (void *));
                     71: extern void hash_free (struct hash *);
                     72: 
                     73: extern unsigned int string_hash_make (const char *);
                     74: 
                     75: #endif /* _ZEBRA_HASH_H */