bplist.c revision 12470:54258108784b 
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) 2005, 2010, Oracle and/or its affiliates. All rights reserved.
23 */
24
25#include <sys/bplist.h>
26#include <sys/zfs_context.h>
27
28
29void
30bplist_create(bplist_t *bpl)
31{
32	mutex_init(&bpl->bpl_lock, NULL, MUTEX_DEFAULT, NULL);
33	list_create(&bpl->bpl_list, sizeof (bplist_entry_t),
34	    offsetof(bplist_entry_t, bpe_node));
35}
36
37void
38bplist_destroy(bplist_t *bpl)
39{
40	list_destroy(&bpl->bpl_list);
41	mutex_destroy(&bpl->bpl_lock);
42}
43
44void
45bplist_append(bplist_t *bpl, const blkptr_t *bp)
46{
47	bplist_entry_t *bpe = kmem_alloc(sizeof (*bpe), KM_SLEEP);
48
49	mutex_enter(&bpl->bpl_lock);
50	bpe->bpe_blk = *bp;
51	list_insert_tail(&bpl->bpl_list, bpe);
52	mutex_exit(&bpl->bpl_lock);
53}
54
55void
56bplist_iterate(bplist_t *bpl, bplist_itor_t *func, void *arg, dmu_tx_t *tx)
57{
58	bplist_entry_t *bpe;
59
60	mutex_enter(&bpl->bpl_lock);
61	while (bpe = list_head(&bpl->bpl_list)) {
62		list_remove(&bpl->bpl_list, bpe);
63		mutex_exit(&bpl->bpl_lock);
64		func(arg, &bpe->bpe_blk, tx);
65		kmem_free(bpe, sizeof (*bpe));
66		mutex_enter(&bpl->bpl_lock);
67	}
68	mutex_exit(&bpl->bpl_lock);
69}
70