Berkeley DB

DbMpoolFile::get

						#include <db_cxx.h>
						int
						DbMpoolFile::get(db_pgno_t *pgnoaddr, u_int32_t flags, void **pagep);
					

Description

The DbMpoolFile::get method copies a pointer to the page with the page number specified by pgnoaddr, from the source file in the DbMpoolFile, into the memory location referenced by pagep. If the page does not exist or cannot be retrieved, DbMpoolFile::get will fail.

Page numbers begin at 0; that is, the first page in the file is page number 0, not page number 1.

The returned page is size_t type aligned.

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

• DB_MPOOL_CREATE If the specified page does not exist, create it. In this case, the pgin method, if specified, ...