db2/include/db_dispatch.h

   1 /*-
   2  * See the file LICENSE for redistribution information.
   3  *
   4  * Copyright (c) 1996, 1997, 1998
   5  *      Sleepycat Software.  All rights reserved.
   6  */
   7 /*
   8  * Copyright (c) 1995, 1996
   9  *      The President and Fellows of Harvard University.  All rights reserved.
  10  *
  11  * Redistribution and use in source and binary forms, with or without
  12  * modification, are permitted provided that the following conditions
  13  * are met:
  14  * 1. Redistributions of source code must retain the above copyright
  15  *    notice, this list of conditions and the following disclaimer.
  16  * 2. Redistributions in binary form must reproduce the above copyright
  17  *    notice, this list of conditions and the following disclaimer in the
  18  *    documentation and/or other materials provided with the distribution.
  19  * 3. All advertising materials mentioning features or use of this software
  20  *    must display the following acknowledgement:
  21  *      This product includes software developed by the University of
  22  *      California, Berkeley and its contributors.
  23  * 4. Neither the name of the University nor the names of its contributors
  24  *    may be used to endorse or promote products derived from this software
  25  *    without specific prior written permission.
  26  *
  27  * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
  28  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
  29  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
  30  * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
  31  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
  32  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
  33  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
  34  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
  35  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
  36  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
  37  * SUCH DAMAGE.
  38  *
  39  *      @(#)db_dispatch.h       10.4 (Sleepycat) 5/3/98
  40  */
  41
  42 #ifndef _DB_DISPATCH_H
  43 #define _DB_DISPATCH_H
  44
  45 struct __db_txnhead;    typedef struct __db_txnhead DB_TXNHEAD;
  46 struct __db_txnlist;    typedef struct __db_txnlist DB_TXNLIST;
  47
  48 /*
  49  * Declarations and typedefs for the list of transaction IDs used during
  50  * recovery.
  51  */
  52 struct __db_txnhead {
  53         LIST_HEAD(__db_headlink, __db_txnlist) head;
  54         u_int32_t maxid;
  55         int32_t generation;
  56 };
  57
  58 struct __db_txnlist {
  59         LIST_ENTRY(__db_txnlist) links;
  60         u_int32_t txnid;
  61         int32_t generation;
  62 };
  63
  64 #define DB_log_BEGIN              0
  65 #define DB_txn_BEGIN              5
  66 #define DB_ham_BEGIN             20
  67 #define DB_db_BEGIN              40
  68 #define DB_bam_BEGIN             50
  69 #define DB_ram_BEGIN            100
  70 #define DB_user_BEGIN           150
  71
  72 #define TXN_UNDO                 0
  73 #define TXN_REDO                 1
  74 #define TXN_BACKWARD_ROLL       -1
  75 #define TXN_FORWARD_ROLL        -2
  76 #define TXN_OPENFILES           -3
  77 #endif