locale/programs/simple-hash.h

   1 /* Copyright (C) 1995-2017 Free Software Foundation, Inc.
   2    This file is part of the GNU C Library.
   3    Contributed by Ulrich Drepper <drepper@gnu.org>, 1995.
   4
   5    This program is free software; you can redistribute it and/or modify
   6    it under the terms of the GNU General Public License as published
   7    by the Free Software Foundation; version 2 of the License, or
   8    (at your option) any later version.
   9
  10    This program is distributed in the hope that it will be useful,
  11    but WITHOUT ANY WARRANTY; without even the implied warranty of
  12    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  13    GNU General Public License for more details.
  14
  15    You should have received a copy of the GNU General Public License
  16    along with this program; if not, see <http://www.gnu.org/licenses/>.  */
  17
  18 #ifndef _SIMPLE_HASH_H
  19 #define _SIMPLE_HASH_H
  20
  21 #include <inttypes.h>
  22 #include <obstack.h>
  23 #include <stdint.h>
  24
  25 typedef struct hash_table
  26 {
  27   unsigned long int size;
  28   unsigned long int filled;
  29   void *first;
  30   void *table;
  31   struct obstack mem_pool;
  32 }
  33 hash_table;
  34
  35
  36 extern int init_hash (hash_table *htab, unsigned long int init_size) __THROW;
  37 extern int delete_hash (hash_table *htab) __THROW;
  38 extern int insert_entry (hash_table *htab, const void *key, size_t keylen,
  39                          void *data) __THROW;
  40 extern int find_entry (const hash_table *htab, const void *key, size_t keylen,
  41                        void **result) __THROW;
  42 extern int set_entry (hash_table *htab, const void *key, size_t keylen,
  43                       void *newval) __THROW;
  44
  45 extern int iterate_table (const hash_table *htab, void **ptr,
  46                           const void **key, size_t *keylen, void **data)
  47      __THROW;
  48
  49 extern uint32_t compute_hashval (const void *key, size_t keylen)
  50      __THROW;
  51 extern unsigned long int next_prime (unsigned long int seed) __THROW;
  52
  53 #endif /* simple-hash.h */