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/*
* s3backer - FUSE-based single file backing store via Amazon S3
*
* Copyright 2008-2011 Archie L. Cobbs <archie@dellroad.org>
*
* This program 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
* of the License, or (at your option) any later version.
*
* This program 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 this program; if not, write to the Free Software
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
* 02110-1301, USA.
*
* In addition, as a special exception, the copyright holders give
* permission to link the code of portions of this program with the
* OpenSSL library under certain conditions as described in each
* individual source file, and distribute linked combinations including
* the two.
*
* You must obey the GNU General Public License in all respects for all
* of the code used other than OpenSSL. If you modify file(s) with this
* exception, you may extend this exception to your version of the
* file(s), but you are not obligated to do so. If you do not wish to do
* so, delete this exception statement from your version. If you delete
* this exception statement from all source files in the program, then
* also delete it here.
*/
/*
* Our hash table implementation.
*
* We make the following simplifying assumptions:
*
* 1. Keys are of type s3b_block_t
* 2. Values are structures in which the first field is the key
* 3. No attempts will be made to overload the table
*/
/* Definitions */
typedef void s3b_hash_visit_t(void *arg, void *value);
/* Declarations */
struct s3b_hash;
/* hash.c */
extern int s3b_hash_create(struct s3b_hash **hashp, u_int maxkeys);
extern void s3b_hash_destroy(struct s3b_hash *hash);
extern u_int s3b_hash_size(struct s3b_hash *hash);
extern void *s3b_hash_get(struct s3b_hash *hash, s3b_block_t key);
extern void *s3b_hash_put(struct s3b_hash *hash, void *value);
extern void s3b_hash_put_new(struct s3b_hash *hash, void *value);
extern void s3b_hash_remove(struct s3b_hash *hash, s3b_block_t key);
extern void s3b_hash_foreach(struct s3b_hash *hash, s3b_hash_visit_t *visitor, void *arg);
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