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Berkeley DB: Db::set_priority
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Db::set_priority
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 |
#include <db_cxx.h>
int
Db::set_priority(DB_CACHE_PRIORITY priority);
int
Db::get_priority(DB_CACHE_PRIORITY *priorityp);
Description: Db::set_priority
Set the cache priority for pages referenced by the
Db
handle.
The priority of a page biases the replacement algorithm to be more or
less likely to discard a page when space is needed in the buffer pool.
The bias is temporary, and pages will eventually be discarded if they
are not referenced again. The Db::set_priority method is only advisory, and does
not guarantee pages will be treated in a specific way.
The Db::set_priority method may be called at any time during the life of the
application.
The Db::set_priority 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
priority
Class
Db
See Also
Databases and Related Methods
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