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Berkeley DB: DB_MPOOLFILE->set_flags
DB_MPOOLFILE->set_flags
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#include <db.h>
int
DB_MPOOLFILE->set_flags(DB_MPOOLFILE *mpf, u_int32_t flags, int onoff)
int
DB_MPOOLFILE->get_flags(DB_MPOOLFILE *mpf, u_int32_t *flagsp);
Description: DB_MPOOLFILE->set_flags
Configure a file in the cache.
To set the flags for a particular database, call the
DB_MPOOLFILE->set_flags method using the DB_MPOOLFILE handle stored in
the mpf field of the DB handle.
The DB_MPOOLFILE->set_flags method
returns a non-zero error value on failure
and 0 on success.
Parameters
- flags
- The flags parameter must be set by bitwise inclusively OR'ing together one or more
of the following values:
- DB_MPOOL_NOFILE
- If set, no backing temporary file will be opened for in-memory
databases, even if they expand to fill the entire cache. Attempts to
create new file pages after the cache has been filled will fail.
The DB_MPOOL_NOFILE flag may be used to configure Berkeley DB at any time during
the life of the application.
- DB_MPOOL_UNLINK
- If set, remove the file when the last reference to it is closed.
The DB_MPOOL_UNLINK flag may be used to configure Berkeley DB at any time during
the life of the application.
- onoff
- If onoff is
zero,
the specified flags are cleared; otherwise they are set.
Description: DB_MPOOLFILE->get_flags
The DB_MPOOLFILE->get_flags method returns the flags.
The DB_MPOOLFILE->get_flags method may be called at any time during the life of the
application.
The DB_MPOOLFILE->get_flags method
returns a non-zero error value on failure
and 0 on success.
Parameters
- flagsp
- The DB_MPOOLFILE->get_flags method returns the
flags in flagsp.
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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