space_reftree.h revision 262093 
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 (the "License").
6 * You may not use this file except in compliance with the License.
7 *
8 * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
9 * or http://www.opensolaris.org/os/licensing.
10 * See the License for the specific language governing permissions
11 * and limitations under the License.
12 *
13 * When distributing Covered Code, include this CDDL HEADER in each
14 * file and include the License file at usr/src/OPENSOLARIS.LICENSE.
15 * If applicable, add the following below this CDDL HEADER, with the
16 * fields enclosed by brackets "[]" replaced with your own identifying
17 * information: Portions Copyright [yyyy] [name of copyright owner]
18 *
19 * CDDL HEADER END
20 */
21/*
22 * Copyright 2009 Sun Microsystems, Inc.  All rights reserved.
23 * Use is subject to license terms.
24 */
25
26/*
27 * Copyright (c) 2013 by Delphix. All rights reserved.
28 */
29
30#ifndef _SYS_SPACE_REFTREE_H
31#define	_SYS_SPACE_REFTREE_H
32
33#include <sys/range_tree.h>
34
35#ifdef	__cplusplus
36extern "C" {
37#endif
38
39typedef struct space_ref {
40	avl_node_t	sr_node;	/* AVL node */
41	uint64_t	sr_offset;	/* range offset (start or end) */
42	int64_t		sr_refcnt;	/* associated reference count */
43} space_ref_t;
44
45void space_reftree_create(avl_tree_t *t);
46void space_reftree_destroy(avl_tree_t *t);
47void space_reftree_add_seg(avl_tree_t *t, uint64_t start, uint64_t end,
48    int64_t refcnt);
49void space_reftree_add_map(avl_tree_t *t, range_tree_t *rt, int64_t refcnt);
50void space_reftree_generate_map(avl_tree_t *t, range_tree_t *rt,
51    int64_t minref);
52
53#ifdef	__cplusplus
54}
55#endif
56
57#endif	/* _SYS_SPACE_REFTREE_H */
58