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/*
* CDDL HEADER START
*
* The contents of this file are subject to the terms of the
* Common Development and Distribution License (the "License").
* You may not use this file except in compliance with the License.
*
* You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
* or http://www.opensolaris.org/os/licensing.
* See the License for the specific language governing permissions
* and limitations under the License.
*
* When distributing Covered Code, include this CDDL HEADER in each
* file and include the License file at usr/src/OPENSOLARIS.LICENSE.
* If applicable, add the following below this CDDL HEADER, with the
* fields enclosed by brackets "[]" replaced with your own identifying
* information: Portions Copyright [yyyy] [name of copyright owner]
*
* CDDL HEADER END
*/
/*
* Copyright 2008 Sun Microsystems, Inc. All rights reserved.
* Use is subject to license terms.
*/
#ifndef _ISNS_CACHE_H
#define _ISNS_CACHE_H
#include <synch.h>
#include <isns_htab.h>
#include <isns_dd.h>
#ifdef __cplusplus
extern "C" {
#endif
#define CACHE_FLAG_UPDATED 0x1
#define SET_CACHE_UPDATED() (cache_flag |= CACHE_FLAG_UPDATED)
#define RESET_CACHE_UPDATED() (cache_flag &= ~CACHE_FLAG_UPDATED)
#define IS_CACHE_UPDATED() (cache_flag & CACHE_FLAG_UPDATED)
#define CACHE_NO_ACTION (0)
#define CACHE_READ (1)
#define CACHE_TRY_READ (2)
#define CACHE_WRITE (3)
typedef struct cache {
rwlock_t l;
htab_t **t;
matrix_t **x;
uint32_t (*get_hval)(void *, uint16_t, uint32_t *);
uint32_t (*get_uid)(const void *);
uint32_t (*set_uid)(void *, uint32_t);
uint32_t (*timestamp)(void);
int (*add_hook)(void *);
int (*replace_hook)(void *, void *, uint32_t *, int);
int (*cmp)(void *, void *, int);
void *(*clone)(void *, int);
int (*ddd)(void *, const uchar_t);
#ifdef DEBUG
void (*dump)(void *);
#endif
} cache_t;
int cache_init(void);
void cache_destroy(void);
int cache_lock(int);
int cache_unlock(int, int);
int cache_lock_read(void);
int cache_lock_write(void);
int cache_unlock_sync(int);
int cache_unlock_nosync(void);
htab_t *cache_get_htab(isns_type_t);
matrix_t *cache_get_matrix(isns_type_t);
int cache_lookup(lookup_ctrl_t *, uint32_t *, int (*)(void *, void *));
int cache_rekey(lookup_ctrl_t *, uint32_t *, int (*)(void *, void *));
int cache_add(isns_obj_t *, int, uint32_t *, int *);
isns_obj_t *cache_remove(lookup_ctrl_t *, int);
#ifdef DEBUG
void cache_dump_htab(isns_type_t);
#endif
#ifdef __cplusplus
}
#endif
#endif /* _ISNS_CACHE_H */
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