aboutsummaryrefslogtreecommitdiff
path: root/db2/common/db_apprec.c
diff options
context:
space:
mode:
Diffstat (limited to 'db2/common/db_apprec.c')
-rw-r--r--db2/common/db_apprec.c49
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);