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Berkeley DB: DB_MPOOLFILE->set_lsn_offset
DB_MPOOLFILE->set_lsn_offset
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#include <db.h>
int
DB_MPOOLFILE->set_lsn_offset(DB_MPOOLFILE *mpf, int32_t lsn_offset);
int
DB_MPOOLFILE->get_lsn_offset(DB_MPOOLFILE *mpf, int32_t *lsn_offsetp);
Description: DB_MPOOLFILE->set_lsn_offset
The DB_MPOOLFILE->set_lsn_offset method specifies the zero-based byte offset
of a log sequence number (DB_LSN) on the file's pages, for the
purposes of page-flushing as part of transaction checkpoint. (See the
DB_ENV->memp_sync documentation for more information.)
The DB_MPOOLFILE->set_lsn_offset method configures a file in the memory pool, not only
operations performed using the specified DB_MPOOLFILE handle.
The DB_MPOOLFILE->set_lsn_offset method may not be called after the DB_MPOOLFILE->open method is
called.
If the file is already open in the memory pool when
DB_MPOOLFILE->open is called, the information specified to DB_MPOOLFILE->set_lsn_offset
must be consistent with the existing file or an error will be
returned.
The DB_MPOOLFILE->set_lsn_offset method
returns a non-zero error value on failure
and 0 on success.
Parameters
- lsn_offset
- The lsn_offset parameter is the zero-based byte offset of the
log sequence number on the file's pages.
Description: DB_MPOOLFILE->get_lsn_offset
The DB_MPOOLFILE->get_lsn_offset method returns the .
The DB_MPOOLFILE->get_lsn_offset method may be called at any time during the life of the
application.
Class
DB_ENV, DB_MPOOLFILE
See Also
Memory Pools and Related Methods
Copyright (c) 1996-2004 Sleepycat Software, Inc. - All rights reserved.
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