#include <db.h> int DB_ENV->memp_stat_print(DB_ENV *env, u_int32_t flags);
         The DB_ENV->memp_stat_print() method displays cache
         subsystem statistical information, as described for the 
         DB_ENV->memp_stat() method. The information is printed to
         a specified output channel (see the 
         DB_ENV->set_msgfile() method for more
         information), or passed to an application callback function (see the 
         DB_ENV->set_msgcall() method for more
         information).
    
         The DB_ENV->memp_stat_print() method may not be called before the
         DB_ENV->open()  method is
         called.
    
         The DB_ENV->memp_stat_print() 
            
                  method returns a non-zero error value on failure and 0 on success.