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      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