#include <db.h>

int
DB_MPOOLFILE->put(DB_MPOOLFILE *mpf,
    void *pgaddr, DB_CACHE_PRIORITY priority, u_int32_t flags);

The DB_MPOOLFILE->put method returns a reference to a page in the cache, setting the priority of the page as specified by the priority parameter.

The DB_MPOOLFILE->put method returns a non-zero error value on failure and 0 on success.

• The flags parameter is currently unused, and must be set to 0.

• 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 DB_MPOOLFILE->get method.

• Set the page's priority as follows:
  DB_PRIORITY_UNCHANGED
  • 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 DB_MPOOLFILE->put method may fail and return one of the following non-zero errors:

• An invalid flag value or parameter was specified.