Berkeley DB

DbMpoolFile::set

						#include <db_cxx.h>
						int
						DbMpoolFile::set(void *pgaddr, u_int32_t flags);
					

Description

The DbMpoolFile::set method sets the flags associated with the page referenced by pgaddr without unpinning it from the pool. The pgaddr argument must be an address previously returned by DbMpoolFile::get.

The flags value must be set to 0 or by bitwise inclusively OR’ing together one or more of the following values.

• DB_MPOOL_CLEAN Clear any previously set modification information (that is, don’t bother writing the page back to the source file).

• DB_MPOOL_DIRTY The page has been modified and must be written to the source file before being evicted from the pool.

• DB_MPOOL_DISCARD The page is unlikely to be useful in the near future, and should ...