#include <db_cxx.h> int DbEnv::get_cachesize(u_int32_t *gbytesp, u_int32_t *bytesp, int *ncachep);
         The DbEnv::get_cachesize() method returns the current size and
         composition of the cache, as set using the
         DbEnv::set_cachesize()
         method.
    
         The DbEnv::get_cachesize() method may be called at any time during
         the life of the application.
    
         The DbEnv::get_cachesize() 
            
            
                method either returns a non-zero error value or throws an
                exception that encapsulates a non-zero error value on
                failure, and returns 0 on success.
            
        
    
The gbytesp parameter references memory into which the gigabytes of memory in the cache is copied.
The bytesp parameter references memory into which the additional bytes of memory in the cache is copied.