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9029278dde
Store objects store keys and values, so have them take those types and nothing more. This way, they don't need to be concerned about the "kind" of entry being operated on; the dispatch layer can take care of the appropriate conversions. This adds a "contains" op to see if a particular entry exists without loading it, which makes a couple of things easier to do; in particular, it allows us to avoid an allocation in ddt_class_contains(). Reviewed-by: Brian Behlendorf <behlendorf1@llnl.gov> Signed-off-by: Rob Norris <rob.norris@klarasystems.com> Sponsored-by: Klara, Inc. Sponsored-by: iXsystems, Inc. Closes #15887
91 lines
3.0 KiB
C
91 lines
3.0 KiB
C
/*
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* CDDL HEADER START
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*
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* The contents of this file are subject to the terms of the
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* Common Development and Distribution License (the "License").
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* You may not use this file except in compliance with the License.
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*
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* You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
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* or https://opensource.org/licenses/CDDL-1.0.
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* See the License for the specific language governing permissions
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* and limitations under the License.
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*
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* When distributing Covered Code, include this CDDL HEADER in each
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* file and include the License file at usr/src/OPENSOLARIS.LICENSE.
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* If applicable, add the following below this CDDL HEADER, with the
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* fields enclosed by brackets "[]" replaced with your own identifying
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* information: Portions Copyright [yyyy] [name of copyright owner]
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*
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* CDDL HEADER END
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*/
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/*
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* Copyright (c) 2009, 2010, Oracle and/or its affiliates. All rights reserved.
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* Copyright (c) 2016 by Delphix. All rights reserved.
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* Copyright (c) 2023, Klara Inc.
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*/
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#ifndef _SYS_DDT_IMPL_H
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#define _SYS_DDT_IMPL_H
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#include <sys/ddt.h>
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#ifdef __cplusplus
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extern "C" {
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#endif
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/*
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* Ops vector to access a specific DDT object type.
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*/
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typedef struct {
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char ddt_op_name[32];
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int (*ddt_op_create)(objset_t *os, uint64_t *object, dmu_tx_t *tx,
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boolean_t prehash);
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int (*ddt_op_destroy)(objset_t *os, uint64_t object, dmu_tx_t *tx);
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int (*ddt_op_lookup)(objset_t *os, uint64_t object,
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const ddt_key_t *ddk, ddt_phys_t *phys, size_t psize);
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int (*ddt_op_contains)(objset_t *os, uint64_t object,
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const ddt_key_t *ddk);
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void (*ddt_op_prefetch)(objset_t *os, uint64_t object,
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const ddt_key_t *ddk);
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int (*ddt_op_update)(objset_t *os, uint64_t object,
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const ddt_key_t *ddk, const ddt_phys_t *phys, size_t psize,
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dmu_tx_t *tx);
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int (*ddt_op_remove)(objset_t *os, uint64_t object,
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const ddt_key_t *ddk, dmu_tx_t *tx);
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int (*ddt_op_walk)(objset_t *os, uint64_t object, uint64_t *walk,
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ddt_key_t *ddk, ddt_phys_t *phys, size_t psize);
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int (*ddt_op_count)(objset_t *os, uint64_t object, uint64_t *count);
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} ddt_ops_t;
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extern const ddt_ops_t ddt_zap_ops;
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extern void ddt_stat_update(ddt_t *ddt, ddt_entry_t *dde, uint64_t neg);
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/*
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* These are only exposed so that zdb can access them. Try not to use them
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* outside of the DDT implementation proper, and if you do, consider moving
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* them up.
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*/
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#define DDT_NAMELEN 110
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extern uint64_t ddt_phys_total_refcnt(const ddt_entry_t *dde);
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extern void ddt_key_fill(ddt_key_t *ddk, const blkptr_t *bp);
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extern void ddt_stat_add(ddt_stat_t *dst, const ddt_stat_t *src, uint64_t neg);
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extern void ddt_object_name(ddt_t *ddt, ddt_type_t type, ddt_class_t clazz,
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char *name);
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extern int ddt_object_walk(ddt_t *ddt, ddt_type_t type, ddt_class_t clazz,
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uint64_t *walk, ddt_entry_t *dde);
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extern int ddt_object_count(ddt_t *ddt, ddt_type_t type, ddt_class_t clazz,
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uint64_t *count);
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extern int ddt_object_info(ddt_t *ddt, ddt_type_t type, ddt_class_t clazz,
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dmu_object_info_t *);
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#ifdef __cplusplus
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}
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#endif
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#endif /* _SYS_DDT_H */
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