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      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 */
     70