diff options
Diffstat (limited to 'db2/txn/txn_rec.c')
| -rw-r--r-- | db2/txn/txn_rec.c | 131 |
1 files changed, 131 insertions, 0 deletions
diff --git a/db2/txn/txn_rec.c b/db2/txn/txn_rec.c new file mode 100644 index 0000000000..1fe720a1cf --- /dev/null +++ b/db2/txn/txn_rec.c @@ -0,0 +1,131 @@ +/*- + * See the file LICENSE for redistribution information. + * + * Copyright (c) 1996, 1997 + * Sleepycat Software. All rights reserved. + */ +/* + * Copyright (c) 1996 + * The President and Fellows of Harvard University. All rights reserved. + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions + * are met: + * 1. Redistributions of source code must retain the above copyright + * notice, this list of conditions and the following disclaimer. + * 2. Redistributions in binary form must reproduce the above copyright + * notice, this list of conditions and the following disclaimer in the + * documentation and/or other materials provided with the distribution. + * 3. All advertising materials mentioning features or use of this software + * must display the following acknowledgement: + * This product includes software developed by the University of + * California, Berkeley and its contributors. + * 4. Neither the name of the University nor the names of its contributors + * may be used to endorse or promote products derived from this software + * without specific prior written permission. + * + * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND + * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE + * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE + * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE + * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL + * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS + * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) + * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT + * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY + * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF + * SUCH DAMAGE. + */ + +#include "config.h" + +#ifndef lint +static const char sccsid[] = "@(#)txn_rec.c 10.4 (Sleepycat) 7/2/97"; +#endif /* not lint */ + +#ifndef NO_SYSTEM_INCLUDES +#include <sys/types.h> + +#include <stddef.h> +#include <stdlib.h> +#include <string.h> +#endif + +#include "db_int.h" +#include "db_page.h" +#include "shqueue.h" +#include "txn.h" +#include "db_dispatch.h" +#include "db_am.h" +#include "common_ext.h" + +/* + * PUBLIC: int __txn_regop_recover + * PUBLIC: __P((DB_LOG *, DBT *, DB_LSN *, int, void *)); + */ +int +__txn_regop_recover(logp, dbtp, lsnp, redo, info) + DB_LOG *logp; + DBT *dbtp; + DB_LSN *lsnp; + int redo; + void *info; +{ + __txn_regop_args *argp; + int ret; + +#ifdef DEBUG_RECOVER + (void)__txn_regop_print(logp, dbtp, lsnp, redo, info); +#endif + logp = logp; /* XXX: Shut the compiler up. */ + redo = redo; + + if ((ret = __txn_regop_read(dbtp->data, &argp)) != 0) + return (ret); + + switch (argp->opcode) { + case TXN_COMMIT: + if (__db_txnlist_find(info, + argp->txnid->txnid) == DB_NOTFOUND) + __db_txnlist_add(info, argp->txnid->txnid); + break; + case TXN_PREPARE: /* Nothing to do. */ + case TXN_BEGIN: + /* Call find so that we update the maxid. */ + (void)__db_txnlist_find(info, argp->txnid->txnid); + break; + } + + *lsnp = argp->prev_lsn; + free (argp); + return (0); +} + +/* + * PUBLIC: int __txn_ckp_recover __P((DB_LOG *, DBT *, DB_LSN *, int, void *)); + */ +int +__txn_ckp_recover(logp, dbtp, lsnp, redo, info) + DB_LOG *logp; + DBT *dbtp; + DB_LSN *lsnp; + int redo; + void *info; +{ + __txn_ckp_args *argp; + int ret; + +#ifdef DEBUG_RECOVER + __txn_ckp_print(logp, dbtp, lsnp, redo, info); +#endif + logp = logp; /* XXX: Shut the compiler up. */ + redo = redo; + info = info; + + if ((ret = __txn_ckp_read(dbtp->data, &argp)) != 0) + return (ret); + + *lsnp = argp->last_ckp; + free(argp); + return (1); +} |