author | Mark Shellenbaum <Mark.Shellenbaum@Sun.COM> |
Tue, 16 Mar 2010 09:43:38 -0600 | |
changeset 11935 | 538c866aaac6 |
parent 10612 | 89423355fa6f |
child 13973 | 4972ab336f54 |
permissions | -rw-r--r-- |
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/* |
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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 http://www.opensolaris.org/os/licensing. |
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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 2010 Sun Microsystems, Inc. All rights reserved. |
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* Use is subject to license terms. |
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*/ |
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#ifndef _SYS_DMU_TX_H |
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#define _SYS_DMU_TX_H |
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#include <sys/inttypes.h> |
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#include <sys/dmu.h> |
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#include <sys/txg.h> |
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#include <sys/refcount.h> |
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#ifdef __cplusplus |
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extern "C" { |
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#endif |
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struct dmu_buf_impl; |
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struct dmu_tx_hold; |
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struct dnode_link; |
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struct dsl_pool; |
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struct dnode; |
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struct dsl_dir; |
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struct dmu_tx { |
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/* |
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* No synchronization is needed because a tx can only be handled |
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* by one thread. |
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*/ |
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list_t tx_holds; /* list of dmu_tx_hold_t */ |
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objset_t *tx_objset; |
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struct dsl_dir *tx_dir; |
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struct dsl_pool *tx_pool; |
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uint64_t tx_txg; |
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uint64_t tx_lastsnap_txg; |
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uint64_t tx_lasttried_txg; |
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txg_handle_t tx_txgh; |
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void *tx_tempreserve_cookie; |
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struct dmu_tx_hold *tx_needassign_txh; |
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list_t tx_callbacks; /* list of dmu_tx_callback_t on this dmu_tx */ |
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uint8_t tx_anyobj; |
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int tx_err; |
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#ifdef ZFS_DEBUG |
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uint64_t tx_space_towrite; |
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uint64_t tx_space_tofree; |
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uint64_t tx_space_tooverwrite; |
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uint64_t tx_space_tounref; |
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refcount_t tx_space_written; |
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refcount_t tx_space_freed; |
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#endif |
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}; |
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enum dmu_tx_hold_type { |
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THT_NEWOBJECT, |
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THT_WRITE, |
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THT_BONUS, |
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THT_FREE, |
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THT_ZAP, |
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THT_SPACE, |
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THT_SPILL, |
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THT_NUMTYPES |
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}; |
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typedef struct dmu_tx_hold { |
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dmu_tx_t *txh_tx; |
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list_node_t txh_node; |
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struct dnode *txh_dnode; |
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uint64_t txh_space_towrite; |
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uint64_t txh_space_tofree; |
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uint64_t txh_space_tooverwrite; |
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uint64_t txh_space_tounref; |
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uint64_t txh_memory_tohold; |
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uint64_t txh_fudge; |
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#ifdef ZFS_DEBUG |
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enum dmu_tx_hold_type txh_type; |
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uint64_t txh_arg1; |
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uint64_t txh_arg2; |
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#endif |
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} dmu_tx_hold_t; |
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typedef struct dmu_tx_callback { |
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list_node_t dcb_node; /* linked to tx_callbacks list */ |
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dmu_tx_callback_func_t *dcb_func; /* caller function pointer */ |
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void *dcb_data; /* caller private data */ |
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} dmu_tx_callback_t; |
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/* |
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* These routines are defined in dmu.h, and are called by the user. |
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*/ |
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dmu_tx_t *dmu_tx_create(objset_t *dd); |
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int dmu_tx_assign(dmu_tx_t *tx, uint64_t txg_how); |
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void dmu_tx_commit(dmu_tx_t *tx); |
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void dmu_tx_abort(dmu_tx_t *tx); |
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uint64_t dmu_tx_get_txg(dmu_tx_t *tx); |
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void dmu_tx_wait(dmu_tx_t *tx); |
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void dmu_tx_callback_register(dmu_tx_t *tx, dmu_tx_callback_func_t *dcb_func, |
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void *dcb_data); |
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void dmu_tx_do_callbacks(list_t *cb_list, int error); |
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/* |
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* These routines are defined in dmu_spa.h, and are called by the SPA. |
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*/ |
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extern dmu_tx_t *dmu_tx_create_assigned(struct dsl_pool *dp, uint64_t txg); |
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/* |
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* These routines are only called by the DMU. |
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*/ |
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dmu_tx_t *dmu_tx_create_dd(dsl_dir_t *dd); |
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int dmu_tx_is_syncing(dmu_tx_t *tx); |
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int dmu_tx_private_ok(dmu_tx_t *tx); |
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void dmu_tx_add_new_object(dmu_tx_t *tx, objset_t *os, uint64_t object); |
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void dmu_tx_willuse_space(dmu_tx_t *tx, int64_t delta); |
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void dmu_tx_dirty_buf(dmu_tx_t *tx, struct dmu_buf_impl *db); |
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int dmu_tx_holds(dmu_tx_t *tx, uint64_t object); |
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void dmu_tx_hold_space(dmu_tx_t *tx, uint64_t space); |
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#ifdef ZFS_DEBUG |
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#define DMU_TX_DIRTY_BUF(tx, db) dmu_tx_dirty_buf(tx, db) |
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#else |
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#define DMU_TX_DIRTY_BUF(tx, db) |
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#endif |
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#ifdef __cplusplus |
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} |
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#endif |
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#endif /* _SYS_DMU_TX_H */ |