NAME

       rtapi_is - details of rtapi configuration

SYNTAX

       int rtapi_is_kernelspace()

       int rtapi_is_realtime()

DESCRIPTION

       rtapi_is_kernelspace() returns nonzero when rtapi modules run in kernel space (e.g., under
       RTAI) and zero when they run in userspace (e.g., under uspace).

       rtapi_is_realtime() returns nonzero when capable of running with realtime guarantees.  For
       rtai,  this always returns nonzero (but actually loading realtime modules will fail if not
       running under the appropriate kernel).  For uspace, this returns nonzero when the  running
       kernel  indicates it is capable of realtime performance.  If rtapi_app is not setuid root,
       this returns nonzero even though rtapi_app will not be able to obtain realtime  scheduling
       or hardware access, so e.g., attempting to loadrt a hardware driver will fail.

REALTIME CONSIDERATIONS

       May  be  called  from  non-realtime  or from realtime setup code.  rtapi_is_realtime() may
       perform filesystem I/O.

RETURN VALUE

       Zero for false, nonzero for true.