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 #pragma ident "%Z%%M% %I% %E% SMI" 30 31 #include <sys/spa.h> 32 #include <sys/txg.h> 33 34 #ifdef __cplusplus 35 extern "C" { 36 #endif 37 38 struct tx_cpu { 39 kmutex_t tc_lock; 40 kcondvar_t tc_cv[TXG_SIZE]; 41 uint64_t tc_count[TXG_SIZE]; 42 char tc_pad[16]; 43 }; 44 45 typedef struct tx_state { 46 tx_cpu_t *tx_cpu; /* protects right to enter txg */ 47 kmutex_t tx_sync_lock; /* protects tx_state_t */ 48 krwlock_t tx_suspend; 49 uint64_t tx_open_txg; /* currently open txg id */ 50 uint64_t tx_quiesced_txg; /* quiesced txg waiting for sync */ 51 uint64_t tx_syncing_txg; /* currently syncing txg id */ 52 uint64_t tx_synced_txg; /* last synced txg id */ 53 54 uint64_t tx_sync_txg_waiting; /* txg we're waiting to sync */ 55 uint64_t tx_quiesce_txg_waiting; /* txg we're waiting to open */ 56 57 kcondvar_t tx_sync_more_cv; 58 kcondvar_t tx_sync_done_cv; 59 kcondvar_t tx_quiesce_more_cv; 60 kcondvar_t tx_quiesce_done_cv; 61 kcondvar_t tx_timeout_cv; 62 kcondvar_t tx_exit_cv; /* wait for all threads to exit */ 63 64 uint8_t tx_threads; /* number of threads */ 65 uint8_t tx_exiting; /* set when we're exiting */ 66 67 kthread_t *tx_sync_thread; 68 kthread_t *tx_quiesce_thread; 69 kthread_t *tx_timelimit_thread; 70 } tx_state_t; 71 72 #ifdef __cplusplus 73 } 74 #endif 75 76 #endif /* _SYS_TXG_IMPL_H */ 77