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