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 2008 Sun Microsystems, Inc. All rights reserved. 23 * Use is subject to license terms. 24 */ 25 26 #ifndef _SYS_TXG_IMPL_H 27 #define _SYS_TXG_IMPL_H 28 29 #include <sys/spa.h> 30 #include <sys/txg.h> 31 32 #ifdef __cplusplus 33 extern "C" { 34 #endif 35 36 struct tx_cpu { 37 kmutex_t tc_lock; 38 kcondvar_t tc_cv[TXG_SIZE]; 39 uint64_t tc_count[TXG_SIZE]; 40 char tc_pad[16]; 41 }; 42 43 typedef struct tx_state { 44 tx_cpu_t *tx_cpu; /* protects right to enter txg */ 45 kmutex_t tx_sync_lock; /* protects tx_state_t */ 46 krwlock_t tx_suspend; 47 uint64_t tx_open_txg; /* currently open txg id */ 48 uint64_t tx_quiesced_txg; /* quiesced txg waiting for sync */ 49 uint64_t tx_syncing_txg; /* currently syncing txg id */ 50 uint64_t tx_synced_txg; /* last synced txg id */ 51 52 uint64_t tx_sync_txg_waiting; /* txg we're waiting to sync */ 53 uint64_t tx_quiesce_txg_waiting; /* txg we're waiting to open */ 54 55 kcondvar_t tx_sync_more_cv; 56 kcondvar_t tx_sync_done_cv; 57 kcondvar_t tx_quiesce_more_cv; 58 kcondvar_t tx_quiesce_done_cv; 59 kcondvar_t tx_timeout_cv; 60 kcondvar_t tx_exit_cv; /* wait for all threads to exit */ 61 62 uint8_t tx_threads; /* number of threads */ 63 uint8_t tx_exiting; /* set when we're exiting */ 64 65 kthread_t *tx_sync_thread; 66 kthread_t *tx_quiesce_thread; 67 } tx_state_t; 68 69 #ifdef __cplusplus 70 } 71 #endif 72 73 #endif /* _SYS_TXG_IMPL_H */ 74