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/*
 * 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 2004 Sun Microsystems, Inc.  All rights reserved.
 * Use is subject to license terms.
 */

#ifndef	_DT_INTTAB_H
#define	_DT_INTTAB_H

#pragma ident	"%Z%%M%	%I%	%E% SMI"

#include <dtrace.h>

#ifdef	__cplusplus
extern "C" {
#endif

typedef struct dt_inthash {
	struct dt_inthash *inh_hash;	/* next dt_inthash in hash chain */
	struct dt_inthash *inh_next;	/* next dt_inthash in output table */
	uint64_t inh_value;		/* value associated with this element */
	uint_t inh_index;		/* index associated with this element */
	uint_t inh_flags;		/* flags (see below) */
} dt_inthash_t;

typedef struct dt_inttab {
	dtrace_hdl_t *int_hdl;		/* pointer back to library handle */
	dt_inthash_t **int_hash;	/* array of hash buckets */
	uint_t int_hashlen;		/* size of hash bucket array */
	uint_t int_nelems;		/* number of elements hashed */
	dt_inthash_t *int_head;		/* head of table in index order */
	dt_inthash_t *int_tail;		/* tail of table in index order */
	uint_t int_index;		/* next index to hand out */
} dt_inttab_t;

#define	DT_INT_PRIVATE	0		/* only a single ref for this entry */
#define	DT_INT_SHARED	1		/* multiple refs can share entry */

extern dt_inttab_t *dt_inttab_create(dtrace_hdl_t *);
extern void dt_inttab_destroy(dt_inttab_t *);
extern int dt_inttab_insert(dt_inttab_t *, uint64_t, uint_t);
extern uint_t dt_inttab_size(const dt_inttab_t *);
extern void dt_inttab_write(const dt_inttab_t *, uint64_t *);

#ifdef	__cplusplus
}
#endif

#endif	/* _DT_INTTAB_H */