#include <db.h>

int
DB->get_heapsize(DB *db, u_int32_t *gbytesp, u_int32_t *bytesp);  

Used when the underlying database is configured to use the Heap access method. This method returns the maximum size of the database's heap file. This value may be set using the DB->set_heapsize() method.

The DB->get_heapsize() method may be called at any time during the life of the application.

The DB->get_heapsize() method returns a non-zero error value on failure and 0 on success.