/*

 * 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

 */

/*

 * Use is subject to license terms.

 */

#ifndef	_SYS_BPLIST_H

#define	_SYS_BPLIST_H

#include <sys/dmu.h>

#include <sys/spa.h>

#include <sys/txg.h>

#include <sys/zio.h>

#include <sys/zfs_context.h>

#ifdef	__cplusplus

extern "C" {

#endif

typedef struct bplist_phys {

	/*

	 * This is the bonus buffer for the dead lists.  The object's

	 * contents is an array of bpl_entries blkptr_t's, representing

	 * a total of bpl_bytes physical space.

	 */

	uint64_t	bpl_entries;

	uint64_t	bpl_bytes;

	uint64_t	bpl_comp;

	uint64_t	bpl_uncomp;

} bplist_phys_t;

#define	BPLIST_SIZE_V0	(2 * sizeof (uint64_t))

typedef struct bplist_q {

	blkptr_t	bpq_blk;

} bplist_q_t;

typedef struct bplist {

	kmutex_t	bpl_lock;

	objset_t	*bpl_mos;

	uint64_t	bpl_object;

	uint8_t		bpl_blockshift;

	uint8_t		bpl_bpshift;

	uint8_t		bpl_havecomp;

	bplist_phys_t	*bpl_phys;

	dmu_buf_t	*bpl_dbuf;

	dmu_buf_t	*bpl_cached_dbuf;

} bplist_t;

typedef void bplist_sync_cb_t(void *arg, const blkptr_t *bp, dmu_tx_t *tx);

extern void bplist_init(bplist_t *bpl);

extern void bplist_fini(bplist_t *bpl);

extern uint64_t bplist_create(objset_t *mos, int blocksize, dmu_tx_t *tx);

extern void bplist_destroy(objset_t *mos, uint64_t object, dmu_tx_t *tx);

extern int bplist_open(bplist_t *bpl, objset_t *mos, uint64_t object);

extern void bplist_close(bplist_t *bpl);

extern boolean_t bplist_empty(bplist_t *bpl);

extern int bplist_iterate(bplist_t *bpl, uint64_t *itorp, blkptr_t *bp);

extern int bplist_enqueue(bplist_t *bpl, const blkptr_t *bp, dmu_tx_t *tx);

extern void bplist_enqueue_cb(void *bpl, const blkptr_t *bp, dmu_tx_t *tx);

extern void bplist_enqueue_deferred(bplist_t *bpl, const blkptr_t *bp);

extern void bplist_sync(bplist_t *bpl, bplist_sync_cb_t *func,

    void *arg, dmu_tx_t *tx);

extern void bplist_vacate(bplist_t *bpl, dmu_tx_t *tx);

extern int bplist_space(bplist_t *bpl,

    uint64_t *usedp, uint64_t *compp, uint64_t *uncompp);

extern int bplist_space_birthrange(bplist_t *bpl,

    uint64_t mintxg, uint64_t maxtxg, uint64_t *dsizep);

#ifdef	__cplusplus

}

#endif

#endif /* _SYS_BPLIST_H */