1/*- 2 * See the file LICENSE for redistribution information. 3 * 4 * Copyright (c) 1996,2008 Oracle. All rights reserved. 5 */ 6/* 7 * Copyright (c) 1995, 1996 8 * The President and Fellows of Harvard University. All rights reserved. 9 * 10 * Redistribution and use in source and binary forms, with or without 11 * modification, are permitted provided that the following conditions 12 * are met: 13 * 1. Redistributions of source code must retain the above copyright 14 * notice, this list of conditions and the following disclaimer. 15 * 2. Redistributions in binary form must reproduce the above copyright 16 * notice, this list of conditions and the following disclaimer in the 17 * documentation and/or other materials provided with the distribution. 18 * 3. Neither the name of the University nor the names of its contributors 19 * may be used to endorse or promote products derived from this software 20 * without specific prior written permission. 21 * 22 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 23 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 24 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 25 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 26 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 27 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 28 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 29 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 30 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 31 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 32 * SUCH DAMAGE. 33 * 34 * $Id: db_dispatch.h,v 12.14 2008/01/08 20:58:17 bostic Exp $ 35 */ 36 37#ifndef _DB_DISPATCH_H_ 38#define _DB_DISPATCH_H_ 39 40#if defined(__cplusplus) 41extern "C" { 42#endif 43 44/* 45 * Declarations and typedefs for the list of transaction IDs used during 46 * recovery. This is a generic list used to pass along whatever information 47 * we need during recovery. 48 */ 49typedef enum { 50 TXNLIST_DELETE, 51 TXNLIST_LSN, 52 TXNLIST_TXNID 53} db_txnlist_type; 54 55#define DB_TXNLIST_MASK(hp, n) (n % hp->nslots) 56struct __db_txnhead { 57 void *td; /* If abort, the detail for the txn. */ 58 DB_THREAD_INFO *thread_info; /* Thread information. */ 59 u_int32_t maxid; /* Maximum transaction id. */ 60 DB_LSN maxlsn; /* Maximum commit lsn. */ 61 DB_LSN ckplsn; /* LSN of last retained checkpoint. */ 62 DB_LSN trunc_lsn; /* Lsn to which we are going to truncate; 63 * make sure we abort anyone after this. */ 64 u_int32_t generation; /* Current generation number. */ 65 u_int32_t gen_alloc; /* Number of generations allocated. */ 66 struct { 67 u_int32_t generation; 68 u_int32_t txn_min; 69 u_int32_t txn_max; 70 } *gen_array; /* Array of txnids associated with a gen. */ 71 u_int nslots; 72 LIST_HEAD(__db_headlink, __db_txnlist) head[1]; 73}; 74 75#define DB_LSN_STACK_SIZE 4 76struct __db_txnlist { 77 db_txnlist_type type; 78 LIST_ENTRY(__db_txnlist) links; 79 union { 80 struct { 81 u_int32_t txnid; 82 u_int32_t generation; 83 u_int32_t status; 84 } t; 85 struct { 86 u_int32_t stack_size; 87 u_int32_t stack_indx; 88 DB_LSN *lsn_stack; 89 } l; 90 } u; 91}; 92 93#if defined(__cplusplus) 94} 95#endif 96 97#endif /* !_DB_DISPATCH_H_ */ 98