diff options
Diffstat (limited to 'db2/common/db_apprec.c')
| -rw-r--r-- | db2/common/db_apprec.c | 49 |
1 files changed, 26 insertions, 23 deletions
diff --git a/db2/common/db_apprec.c b/db2/common/db_apprec.c index 7a42e13317..df707eafef 100644 --- a/db2/common/db_apprec.c +++ b/db2/common/db_apprec.c @@ -1,7 +1,7 @@ /*- * See the file LICENSE for redistribution information. * - * Copyright (c) 1996, 1997 + * Copyright (c) 1996, 1997, 1998 * Sleepycat Software. All rights reserved. */ @@ -9,18 +9,17 @@ #ifndef lint static const char copyright[] = -"@(#) Copyright (c) 1997\n\ +"@(#) Copyright (c) 1996, 1997, 1998\n\ Sleepycat Software Inc. All rights reserved.\n"; -static const char sccsid[] = "@(#)db_apprec.c 10.23 (Sleepycat) 1/17/98"; +static const char sccsid[] = "@(#)db_apprec.c 10.30 (Sleepycat) 5/3/98"; #endif #ifndef NO_SYSTEM_INCLUDES #include <sys/types.h> #include <errno.h> -#include <time.h> #include <string.h> -#include <stdlib.h> +#include <time.h> #endif #include "db_int.h" @@ -36,18 +35,19 @@ static const char sccsid[] = "@(#)db_apprec.c 10.23 (Sleepycat) 1/17/98"; * __db_apprec -- * Perform recovery. * - * PUBLIC: int __db_apprec __P((DB_ENV *, int)); + * PUBLIC: int __db_apprec __P((DB_ENV *, u_int32_t)); */ int __db_apprec(dbenv, flags) DB_ENV *dbenv; - int flags; + u_int32_t flags; { DBT data; DB_LOG *lp; DB_LSN ckp_lsn, first_lsn, lsn; time_t now; - int is_thread, ret; + u_int32_t is_thread; + int ret; void *txninfo; lp = dbenv->lg_info; @@ -91,14 +91,14 @@ __db_apprec(dbenv, flags) if ((ret = log_get(lp, &ckp_lsn, &data, DB_CHECKPOINT)) != 0) { /* * If we don't find a checkpoint, start from the beginning. - * If that fails, we're done. Note, we require that there - * be log records if we're performing recovery, and fail if - * there aren't. + * If that fails, we're done. Note, we do not require that + * there be log records if we're performing recovery. */ if ((ret = log_get(lp, &ckp_lsn, &data, DB_FIRST)) != 0) { - __db_err(dbenv, "First log record not found"); if (ret == DB_NOTFOUND) - ret = EINVAL; + ret = 0; + else + __db_err(dbenv, "First log record not found"); goto out; } } @@ -134,14 +134,17 @@ __db_apprec(dbenv, flags) } else if ((ret = __log_findckp(lp, &first_lsn)) == DB_NOTFOUND) { /* - * If recovery was specified, there must be log files. - * If we don't find one, it's an error. (This should - * have been caught above, when a log_get() of DB_FIRST - * or DB_CHECKPOINT succeeded, but paranoia is good.) + * We don't require that log files exist if recovery + * was specified. */ - ret = EINVAL; + ret = 0; goto out; } + + if (dbenv->db_verbose) + __db_err(lp->dbenv, "Recovery starting from [%lu][%lu]", + (u_long)first_lsn.file, (u_long)first_lsn.offset); + for (ret = log_get(lp, &lsn, &data, DB_LAST); ret == 0 && log_compare(&lsn, &first_lsn) > 0; ret = log_get(lp, &lsn, &data, DB_PREV)) { @@ -175,21 +178,21 @@ __db_apprec(dbenv, flags) __log_close_files(lp); /* - * Now set the maximum transaction id, set the last checkpoint lsn, - * and the current time. Then take a checkpoint. + * Now set the last checkpoint lsn and the current time, + * take a checkpoint, and reset the txnid. */ (void)time(&now); - dbenv->tx_info->region->last_txnid = ((__db_txnhead *)txninfo)->maxid; dbenv->tx_info->region->last_ckp = ckp_lsn; dbenv->tx_info->region->time_ckp = (u_int32_t)now; if ((ret = txn_checkpoint(dbenv->tx_info, 0, 0)) != 0) goto out; + dbenv->tx_info->region->last_txnid = TXN_MINIMUM; if (dbenv->db_verbose) { __db_err(lp->dbenv, "Recovery complete at %.24s", ctime(&now)); - __db_err(lp->dbenv, "%s %lu %s [%lu][%lu]", + __db_err(lp->dbenv, "%s %lx %s [%lu][%lu]", "Maximum transaction id", - (u_long)dbenv->tx_info->region->last_txnid, + ((DB_TXNHEAD *)txninfo)->maxid, "Recovery checkpoint", (u_long)dbenv->tx_info->region->last_ckp.file, (u_long)dbenv->tx_info->region->last_ckp.offset); |