xref: /illumos-gate/usr/src/lib/libdtrace/common/dt_inttab.h (revision 1da57d551424de5a9d469760be7c4b4d4f10a755)
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 #include <dtrace.h>
31 
32 #ifdef	__cplusplus
33 extern "C" {
34 #endif
35 
36 typedef struct dt_inthash {
37 	struct dt_inthash *inh_hash;	/* next dt_inthash in hash chain */
38 	struct dt_inthash *inh_next;	/* next dt_inthash in output table */
39 	uint64_t inh_value;		/* value associated with this element */
40 	uint_t inh_index;		/* index associated with this element */
41 	uint_t inh_flags;		/* flags (see below) */
42 } dt_inthash_t;
43 
44 typedef struct dt_inttab {
45 	dtrace_hdl_t *int_hdl;		/* pointer back to library handle */
46 	dt_inthash_t **int_hash;	/* array of hash buckets */
47 	uint_t int_hashlen;		/* size of hash bucket array */
48 	uint_t int_nelems;		/* number of elements hashed */
49 	dt_inthash_t *int_head;		/* head of table in index order */
50 	dt_inthash_t *int_tail;		/* tail of table in index order */
51 	uint_t int_index;		/* next index to hand out */
52 } dt_inttab_t;
53 
54 #define	DT_INT_PRIVATE	0		/* only a single ref for this entry */
55 #define	DT_INT_SHARED	1		/* multiple refs can share entry */
56 
57 extern dt_inttab_t *dt_inttab_create(dtrace_hdl_t *);
58 extern void dt_inttab_destroy(dt_inttab_t *);
59 extern int dt_inttab_insert(dt_inttab_t *, uint64_t, uint_t);
60 extern uint_t dt_inttab_size(const dt_inttab_t *);
61 extern void dt_inttab_write(const dt_inttab_t *, uint64_t *);
62 
63 #ifdef	__cplusplus
64 }
65 #endif
66 
67 #endif	/* _DT_INTTAB_H */
68