usr/src/cmd/fm/fmd/common/fmd_idspace.h

   1 /*
   2  * CDDL HEADER START
   3  *
   4  * The contents of this file are subject to the terms of the
   5  * Common Development and Distribution License, Version 1.0 only
   6  * (the "License").  You may not use this file except in compliance
   7  * with the License.
   8  *
   9  * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
  10  * or http://www.opensolaris.org/os/licensing.
  11  * See the License for the specific language governing permissions
  12  * and limitations under the License.
  13  *
  14  * When distributing Covered Code, include this CDDL HEADER in each
  15  * file and include the License file at usr/src/OPENSOLARIS.LICENSE.
  16  * If applicable, add the following below this CDDL HEADER, with the
  17  * fields enclosed by brackets "[]" replaced with your own identifying
  18  * information: Portions Copyright [yyyy] [name of copyright owner]
  19  *
  20  * CDDL HEADER END
  21  */
  22 /*
  23  * Copyright 2005 Sun Microsystems, Inc.  All rights reserved.
  24  * Use is subject to license terms.
  25  */
  26
  27 #ifndef _FMD_IDSPACE_H
  28 #define _FMD_IDSPACE_H
  29
  30 #pragma ident   "%Z%%M% %I%     %E% SMI"
  31
  32 #include <sys/types.h>
  33 #include <pthread.h>
  34
  35 #ifdef  __cplusplus
  36 extern "C" {
  37 #endif
  38
  39 typedef struct fmd_idelem {
  40         struct fmd_idelem *ide_next;    /* next element in hash bucket chain */
  41         void *ide_data;                 /* data associated with this element */
  42         id_t ide_id;                    /* identifier associated w/ element */
  43 } fmd_idelem_t;
  44
  45 typedef struct fmd_idspace {
  46         char ids_name[32];              /* string name of idspace for debug */
  47         pthread_mutex_t ids_lock;       /* lock protecting idspace contents */
  48         pthread_cond_t ids_cv;          /* condition variable for waiters */
  49         fmd_idelem_t **ids_hash;        /* hash bucket array of fmd_idelems */
  50         uint_t ids_hashlen;             /* size of hash bucket array */
  51         uint_t ids_refs;                /* reference count for idspace_hold */
  52         id_t ids_nextid;                /* next identifier guess for alloc */
  53         id_t ids_minid;                 /* minimum identifier value */
  54         id_t ids_maxid;                 /* maximum identifier value */
  55         id_t ids_count;                 /* number of allocated ids */
  56 } fmd_idspace_t;
  57
  58 extern fmd_idspace_t *fmd_idspace_create(const char *, id_t, id_t);
  59 extern void fmd_idspace_destroy(fmd_idspace_t *);
  60 extern void fmd_idspace_apply(fmd_idspace_t *,
  61     void (*)(fmd_idspace_t *, id_t, void *), void *);
  62
  63 extern void *fmd_idspace_getspecific(fmd_idspace_t *, id_t);
  64 extern void fmd_idspace_setspecific(fmd_idspace_t *, id_t, void *);
  65 extern int fmd_idspace_contains(fmd_idspace_t *, id_t);
  66 extern int fmd_idspace_valid(fmd_idspace_t *, id_t);
  67
  68 extern id_t fmd_idspace_xalloc(fmd_idspace_t *, id_t, void *);
  69 extern id_t fmd_idspace_alloc(fmd_idspace_t *, void *);
  70 extern id_t fmd_idspace_alloc_min(fmd_idspace_t *, void *);
  71 extern void *fmd_idspace_free(fmd_idspace_t *, id_t);
  72
  73 extern void *fmd_idspace_hold(fmd_idspace_t *, id_t);
  74 extern void fmd_idspace_rele(fmd_idspace_t *, id_t);
  75
  76 #ifdef  __cplusplus
  77 }
  78 #endif
  79
  80 #endif  /* _FMD_IDSPACE_H */