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/*-
* See the file LICENSE for redistribution information.
*
* Copyright (c) 1999, 2000
* Sleepycat Software. All rights reserved.
*/
#include "db_config.h"
#ifndef lint
static const char revid[] = "$Id: qam_conv.c,v 11.6 2000/11/16 23:40:57 ubell Exp $";
#endif /* not lint */
#ifndef NO_SYSTEM_INCLUDES
#include <sys/types.h>
#endif
#include "db_int.h"
#include "db_page.h"
#include "qam.h"
#include "db_swap.h"
#include "db_am.h"
/*
* __qam_mswap --
* Swap the bytes on the queue metadata page.
*
* PUBLIC: int __qam_mswap __P((PAGE *));
*/
int
__qam_mswap(pg)
PAGE *pg;
{
u_int8_t *p;
__db_metaswap(pg);
p = (u_int8_t *)pg + sizeof(DBMETA);
SWAP32(p); /* first_recno */
SWAP32(p); /* cur_recno */
SWAP32(p); /* re_len */
SWAP32(p); /* re_pad */
SWAP32(p); /* rec_page */
SWAP32(p); /* page_ext */
return (0);
}
/*
* __qam_pgin_out --
* Convert host-specific page layout to/from the host-independent format
* stored on disk.
* We only need to fix up a few fields in the header
*
* PUBLIC: int __qam_pgin_out __P((DB_ENV *, db_pgno_t, void *, DBT *));
*/
int
__qam_pgin_out(dbenv, pg, pp, cookie)
DB_ENV *dbenv;
db_pgno_t pg;
void *pp;
DBT *cookie;
{
DB_PGINFO *pginfo;
QPAGE *h;
COMPQUIET(pg, 0);
COMPQUIET(dbenv, NULL);
pginfo = (DB_PGINFO *)cookie->data;
if (!pginfo->needswap)
return (0);
h = pp;
if (h->type == P_QAMMETA)
return (__qam_mswap(pp));
M_32_SWAP(h->lsn.file);
M_32_SWAP(h->lsn.offset);
M_32_SWAP(h->pgno);
return (0);
}
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