183 lines
4.7 KiB
C
183 lines
4.7 KiB
C
/*-
|
|
* See the file LICENSE for redistribution information.
|
|
*
|
|
* Copyright (c) 1996, 1997
|
|
* Sleepycat Software. All rights reserved.
|
|
*/
|
|
/*
|
|
* Copyright (c) 1990, 1993, 1994, 1995, 1996
|
|
* Keith Bostic. All rights reserved.
|
|
*/
|
|
/*
|
|
* Copyright (c) 1990, 1993, 1994, 1995
|
|
* The Regents of the University of California. All rights reserved.
|
|
*
|
|
* This code is derived from software contributed to Berkeley by
|
|
* Mike Olson.
|
|
*
|
|
* 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[] = "@(#)bt_close.c 10.25 (Sleepycat) 1/6/98";
|
|
#endif /* not lint */
|
|
|
|
#ifndef NO_SYSTEM_INCLUDES
|
|
#include <sys/types.h>
|
|
#include <sys/mman.h>
|
|
|
|
#include <errno.h>
|
|
#include <stdio.h>
|
|
#include <stdlib.h>
|
|
#include <string.h>
|
|
#include <unistd.h>
|
|
#endif
|
|
|
|
#include "db_int.h"
|
|
#include "db_page.h"
|
|
#include "btree.h"
|
|
|
|
static void __bam_upstat __P((DB *dbp));
|
|
|
|
/*
|
|
* __bam_close --
|
|
* Close a btree.
|
|
*
|
|
* PUBLIC: int __bam_close __P((DB *));
|
|
*/
|
|
int
|
|
__bam_close(dbp)
|
|
DB *dbp;
|
|
{
|
|
BTREE *t;
|
|
|
|
DEBUG_LWRITE(dbp, NULL, "bam_close", NULL, NULL, 0);
|
|
|
|
t = dbp->internal;
|
|
|
|
/* Update tree statistics. */
|
|
__bam_upstat(dbp);
|
|
|
|
/* Free any allocated memory. */
|
|
if (t->bt_rkey.data)
|
|
FREE(t->bt_rkey.data, t->bt_rkey.size);
|
|
if (t->bt_rdata.data)
|
|
FREE(t->bt_rdata.data, t->bt_rdata.ulen);
|
|
if (t->bt_sp != t->bt_stack)
|
|
FREE(t->bt_sp, (t->bt_esp - t->bt_sp) * sizeof(EPG));
|
|
|
|
FREE(t, sizeof(BTREE));
|
|
dbp->internal = NULL;
|
|
|
|
return (0);
|
|
}
|
|
|
|
/*
|
|
* __bam_sync --
|
|
* Sync the btree to disk.
|
|
*
|
|
* PUBLIC: int __bam_sync __P((DB *, int));
|
|
*/
|
|
int
|
|
__bam_sync(argdbp, flags)
|
|
DB *argdbp;
|
|
int flags;
|
|
{
|
|
DB *dbp;
|
|
int ret;
|
|
|
|
DEBUG_LWRITE(argdbp, NULL, "bam_sync", NULL, NULL, flags);
|
|
|
|
/* Check for invalid flags. */
|
|
if ((ret = __db_syncchk(argdbp, flags)) != 0)
|
|
return (ret);
|
|
|
|
/* If it wasn't possible to modify the file, we're done. */
|
|
if (F_ISSET(argdbp, DB_AM_INMEM | DB_AM_RDONLY))
|
|
return (0);
|
|
|
|
GETHANDLE(argdbp, NULL, &dbp, ret);
|
|
|
|
/* Flush any dirty pages from the cache to the backing file. */
|
|
if ((ret = memp_fsync(dbp->mpf)) == DB_INCOMPLETE)
|
|
ret = 0;
|
|
|
|
PUTHANDLE(dbp);
|
|
return (ret);
|
|
}
|
|
|
|
/*
|
|
* __bam_upstat --
|
|
* Update tree statistics.
|
|
*/
|
|
static void
|
|
__bam_upstat(dbp)
|
|
DB *dbp;
|
|
{
|
|
BTREE *t;
|
|
BTMETA *meta;
|
|
DB_LOCK metalock;
|
|
db_pgno_t pgno;
|
|
int flags, ret;
|
|
|
|
/*
|
|
* We use a no-op log call to log the update of the statistics onto the
|
|
* metadata page. The Db->close call isn't transaction protected to
|
|
* start with, and I'm not sure what undoing a statistics update means,
|
|
* anyway.
|
|
*/
|
|
if (F_ISSET(dbp, DB_AM_INMEM | DB_AM_RDONLY))
|
|
return;
|
|
|
|
flags = 0;
|
|
pgno = PGNO_METADATA;
|
|
|
|
/* Lock and retrieve the page. */
|
|
if (__bam_lget(dbp, 0, pgno, DB_LOCK_WRITE, &metalock) != 0)
|
|
return;
|
|
if (__bam_pget(dbp, (PAGE **)&meta, &pgno, 0) == 0) {
|
|
/* Log the change. */
|
|
if (DB_LOGGING(dbp) &&
|
|
(ret = __db_noop_log(dbp->dbenv->lg_info, dbp->txn,
|
|
&LSN(meta), 0)) == 0)
|
|
goto err;
|
|
|
|
/* Update the statistics. */
|
|
t = dbp->internal;
|
|
__bam_add_mstat(&t->lstat, &meta->stat);
|
|
|
|
flags = DB_MPOOL_DIRTY;
|
|
}
|
|
|
|
err: (void)memp_fput(dbp->mpf, (PAGE *)meta, flags);
|
|
(void)__BT_LPUT(dbp, metalock);
|
|
}
|