#include <db_cxx.h> int DbEnv::mutex_get_tas_spins(u_int32_t *, tas_spinsp);
         The DbEnv::mutex_get_tas_spins() method returns the test-and-set
         spin count. This value may be configured using the
         DbEnv::mutex_set_tas_spins()
         method.
    
         The DbEnv::mutex_get_tas_spins() method may be called at any time
         during the life of the application.
    
         The DbEnv::mutex_get_tas_spins() 
            
            
                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.