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/*
* CDDL HEADER START
*
* The contents of this file are subject to the terms of the
* Common Development and Distribution License (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 (c) 2005, 2010, Oracle and/or its affiliates. All rights reserved.
* Copyright (c) 2012, 2018 by Delphix. All rights reserved.
*/
#include <sys/bplist.h>
#include <sys/zfs_context.h>
void
bplist_create(bplist_t *bpl)
{
mutex_init(&bpl->bpl_lock, NULL, MUTEX_DEFAULT, NULL);
list_create(&bpl->bpl_list, sizeof (bplist_entry_t),
offsetof(bplist_entry_t, bpe_node));
}
void
bplist_destroy(bplist_t *bpl)
{
list_destroy(&bpl->bpl_list);
mutex_destroy(&bpl->bpl_lock);
}
void
bplist_append(bplist_t *bpl, const blkptr_t *bp)
{
bplist_entry_t *bpe = kmem_alloc(sizeof (*bpe), KM_SLEEP);
mutex_enter(&bpl->bpl_lock);
bpe->bpe_blk = *bp;
list_insert_tail(&bpl->bpl_list, bpe);
mutex_exit(&bpl->bpl_lock);
}
/*
* To aid debugging, we keep the most recently removed entry. This way if
* we are in the callback, we can easily locate the entry.
*/
static bplist_entry_t *bplist_iterate_last_removed;
void
bplist_iterate(bplist_t *bpl, bplist_itor_t *func, void *arg, dmu_tx_t *tx)
{
bplist_entry_t *bpe;
mutex_enter(&bpl->bpl_lock);
while ((bpe = list_head(&bpl->bpl_list))) {
bplist_iterate_last_removed = bpe;
list_remove(&bpl->bpl_list, bpe);
mutex_exit(&bpl->bpl_lock);
func(arg, &bpe->bpe_blk, tx);
kmem_free(bpe, sizeof (*bpe));
mutex_enter(&bpl->bpl_lock);
}
mutex_exit(&bpl->bpl_lock);
}
void
bplist_clear(bplist_t *bpl)
{
bplist_entry_t *bpe;
mutex_enter(&bpl->bpl_lock);
while ((bpe = list_head(&bpl->bpl_list))) {
bplist_iterate_last_removed = bpe;
list_remove(&bpl->bpl_list, bpe);
kmem_free(bpe, sizeof (*bpe));
}
mutex_exit(&bpl->bpl_lock);
}
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