xref: /illumos-gate/usr/src/uts/common/fs/zfs/sys/bptree.h (revision 7802d7bf)
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 (c) 2012, 2014 by Delphix. All rights reserved.
23  */
24 
25 #ifndef	_SYS_BPTREE_H
26 #define	_SYS_BPTREE_H
27 
28 #include <sys/spa.h>
29 #include <sys/zio.h>
30 
31 #ifdef	__cplusplus
32 extern "C" {
33 #endif
34 
35 typedef struct bptree_phys {
36 	uint64_t bt_begin;
37 	uint64_t bt_end;
38 	uint64_t bt_bytes;
39 	uint64_t bt_comp;
40 	uint64_t bt_uncomp;
41 } bptree_phys_t;
42 
43 typedef struct bptree_entry_phys {
44 	blkptr_t be_bp;
45 	uint64_t be_birth_txg; /* only delete blocks born after this txg */
46 	zbookmark_phys_t be_zb; /* holds traversal resume point if needed */
47 } bptree_entry_phys_t;
48 
49 typedef int bptree_itor_t(void *arg, const blkptr_t *bp, dmu_tx_t *tx);
50 
51 uint64_t bptree_alloc(objset_t *os, dmu_tx_t *tx);
52 int bptree_free(objset_t *os, uint64_t obj, dmu_tx_t *tx);
53 boolean_t bptree_is_empty(objset_t *os, uint64_t obj);
54 
55 void bptree_add(objset_t *os, uint64_t obj, blkptr_t *bp, uint64_t birth_txg,
56     uint64_t bytes, uint64_t comp, uint64_t uncomp, dmu_tx_t *tx);
57 
58 int bptree_iterate(objset_t *os, uint64_t obj, boolean_t free,
59     bptree_itor_t func, void *arg, dmu_tx_t *tx);
60 
61 #ifdef	__cplusplus
62 }
63 #endif
64 
65 #endif	/* _SYS_BPTREE_H */
66