#include <db.h> int DB_MPOOLFILE->set_flags(DB_MPOOLFILE *mpf, u_int32_t flags, int onoff)
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.
The flags must be set to one of the following values:
If set, no backing temporary file will be opened for the specified in-memory database, even if it expands to fill the entire cache. Attempts to create new database pages after the cache has been filled will fail.
The DB_MPOOL_NOFILE flag configures a file in the cache, not
only operations performed using the specified
DB_MPOOLFILE handle.
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_ULINK flag configures a file in the cache, not
only operations performed using the specified
DB_MPOOLFILE handle.
The DB_MPOOL_ULINK flag may be used to configure Berkeley DB at any
time during the life of the application.