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 2009 Sun Microsystems, Inc. All rights reserved. 23 * Use is subject to license terms. 24 */ 25 26 /* 27 * Copyright (c) 2012 by Delphix. All rights reserved. 28 */ 29 30 #ifndef _SYS_TXG_IMPL_H 31 #define _SYS_TXG_IMPL_H 32 33 #include <sys/spa.h> 34 #include <sys/txg.h> 35 36 #ifdef __cplusplus 37 extern "C" { 38 #endif 39 40 struct tx_cpu { 41 kmutex_t tc_lock; 42 kcondvar_t tc_cv[TXG_SIZE]; 43 uint64_t tc_count[TXG_SIZE]; /* tx hold count on each txg */ 44 list_t tc_callbacks[TXG_SIZE]; /* commit cb list */ 45 char tc_pad[16]; /* pad to fill 3 cache lines */ 46 }; 47 48 typedef struct tx_state { 49 tx_cpu_t *tx_cpu; /* protects access to tx_open_txg */ 50 kmutex_t tx_sync_lock; /* protects the rest of this struct */ 51 uint64_t tx_open_txg; /* currently open txg id */ 52 uint64_t tx_quiesced_txg; /* quiesced txg waiting for sync */ 53 uint64_t tx_syncing_txg; /* currently syncing txg id */ 54 uint64_t tx_synced_txg; /* last synced txg id */ 55 56 uint64_t tx_sync_txg_waiting; /* txg we're waiting to sync */ 57 uint64_t tx_quiesce_txg_waiting; /* txg we're waiting to open */ 58 59 kcondvar_t tx_sync_more_cv; 60 kcondvar_t tx_sync_done_cv; 61 kcondvar_t tx_quiesce_more_cv; 62 kcondvar_t tx_quiesce_done_cv; 63 kcondvar_t tx_timeout_cv; 64 kcondvar_t tx_exit_cv; /* wait for all threads to exit */ 65 66 uint8_t tx_threads; /* number of threads */ 67 uint8_t tx_exiting; /* set when we're exiting */ 68 69 kthread_t *tx_sync_thread; 70 kthread_t *tx_quiesce_thread; 71 72 taskq_t *tx_commit_cb_taskq; /* commit callback taskq */ 73 } tx_state_t; 74 75 #ifdef __cplusplus 76 } 77 #endif 78 79 #endif /* _SYS_TXG_IMPL_H */ 80