usr/src/lib/libdtrace/common/dt_inttab.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 2004 Sun Microsystems, Inc.  All rights reserved.
  24  * Use is subject to license terms.
  25  */
  26
  27 #ifndef _DT_INTTAB_H
  28 #define _DT_INTTAB_H
  29
  30 #pragma ident   "%Z%%M% %I%     %E% SMI"
  31
  32 #include <dtrace.h>
  33
  34 #ifdef  __cplusplus
  35 extern "C" {
  36 #endif
  37
  38 typedef struct dt_inthash {
  39         struct dt_inthash *inh_hash;    /* next dt_inthash in hash chain */
  40         struct dt_inthash *inh_next;    /* next dt_inthash in output table */
  41         uint64_t inh_value;             /* value associated with this element */
  42         uint_t inh_index;               /* index associated with this element */
  43         uint_t inh_flags;               /* flags (see below) */
  44 } dt_inthash_t;
  45
  46 typedef struct dt_inttab {
  47         dtrace_hdl_t *int_hdl;          /* pointer back to library handle */
  48         dt_inthash_t **int_hash;        /* array of hash buckets */
  49         uint_t int_hashlen;             /* size of hash bucket array */
  50         uint_t int_nelems;              /* number of elements hashed */
  51         dt_inthash_t *int_head;         /* head of table in index order */
  52         dt_inthash_t *int_tail;         /* tail of table in index order */
  53         uint_t int_index;               /* next index to hand out */
  54 } dt_inttab_t;
  55
  56 #define DT_INT_PRIVATE  0               /* only a single ref for this entry */
  57 #define DT_INT_SHARED   1               /* multiple refs can share entry */
  58
  59 extern dt_inttab_t *dt_inttab_create(dtrace_hdl_t *);
  60 extern void dt_inttab_destroy(dt_inttab_t *);
  61 extern int dt_inttab_insert(dt_inttab_t *, uint64_t, uint_t);
  62 extern uint_t dt_inttab_size(const dt_inttab_t *);
  63 extern void dt_inttab_write(const dt_inttab_t *, uint64_t *);
  64
  65 #ifdef  __cplusplus
  66 }
  67 #endif
  68
  69 #endif  /* _DT_INTTAB_H */