fmd_idspace.h revision d9638e547d8811f2c689977f8dd2a353938b61fd
/*
* CDDL HEADER START
*
* The contents of this file are subject to the terms of the
* Common Development and Distribution License, Version 1.0 only
* (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 2005 Sun Microsystems, Inc. All rights reserved.
* Use is subject to license terms.
*/
#ifndef _FMD_IDSPACE_H
#define _FMD_IDSPACE_H
#pragma ident "%Z%%M% %I% %E% SMI"
#include <sys/types.h>
#include <pthread.h>
#ifdef __cplusplus
extern "C" {
#endif
typedef struct fmd_idelem {
struct fmd_idelem *ide_next; /* next element in hash bucket chain */
void *ide_data; /* data associated with this element */
id_t ide_id; /* identifier associated w/ element */
} fmd_idelem_t;
typedef struct fmd_idspace {
char ids_name[32]; /* string name of idspace for debug */
pthread_mutex_t ids_lock; /* lock protecting idspace contents */
pthread_cond_t ids_cv; /* condition variable for waiters */
fmd_idelem_t **ids_hash; /* hash bucket array of fmd_idelems */
uint_t ids_hashlen; /* size of hash bucket array */
uint_t ids_refs; /* reference count for idspace_hold */
id_t ids_nextid; /* next identifier guess for alloc */
id_t ids_minid; /* minimum identifier value */
id_t ids_maxid; /* maximum identifier value */
id_t ids_count; /* number of allocated ids */
} fmd_idspace_t;
extern fmd_idspace_t *fmd_idspace_create(const char *, id_t, id_t);
extern void fmd_idspace_destroy(fmd_idspace_t *);
extern void fmd_idspace_apply(fmd_idspace_t *,
void (*)(fmd_idspace_t *, id_t, void *), void *);
extern void *fmd_idspace_getspecific(fmd_idspace_t *, id_t);
extern void fmd_idspace_setspecific(fmd_idspace_t *, id_t, void *);
extern int fmd_idspace_contains(fmd_idspace_t *, id_t);
extern int fmd_idspace_valid(fmd_idspace_t *, id_t);
extern id_t fmd_idspace_xalloc(fmd_idspace_t *, id_t, void *);
extern id_t fmd_idspace_alloc(fmd_idspace_t *, void *);
extern id_t fmd_idspace_alloc_min(fmd_idspace_t *, void *);
extern void *fmd_idspace_free(fmd_idspace_t *, id_t);
extern void *fmd_idspace_hold(fmd_idspace_t *, id_t);
extern void fmd_idspace_rele(fmd_idspace_t *, id_t);
#ifdef __cplusplus
}
#endif
#endif /* _FMD_IDSPACE_H */