/*
 * 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

#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 */