#include <db_cxx.h> int DbMpoolFile::put(void *pgaddr, DB_CACHE_PRIORITY priority, u_int32_t flags);
The DbMpoolFile::put() method returns a reference to a page in the
cache, setting the priority of the page as specified by the priority parameter.
The DbMpoolFile::put()
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.
The pgaddr parameter is the address of the page to be returned to the cache. The pgaddr parameter must be a value previously returned by the DbMpoolFile::get() method.
Set the page's priority as follows:
The priority is unchanged.
DB_PRIORITY_VERY_LOW
The lowest priority: pages are the most likely to be discarded.
DB_PRIORITY_LOW
The next lowest priority.
DB_PRIORITY_DEFAULT
The default priority.
DB_PRIORITY_HIGH
The next highest priority.
DB_PRIORITY_VERY_HIGH
The highest priority: pages are the least likely to be discarded.
The DbMpoolFile::put()
method may fail and throw a DbException
exception, encapsulating one of the following non-zero errors, or return one
of the following non-zero errors: