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/*
 *
 *
 *  $Id: priority.h,v 1.2 2001-09-27 11:59:14 chris Exp $
 */
 
#ifndef __RTEMS_POSIX_PRIORITY_h
#define __RTEMS_POSIX_PRIORITY_h
 
#include <rtems/score/priority.h>
 
/*
 *  1003.1b-1993,2.2.2.80 definition of priority, p. 19
 *
 *  "Numericallly higher values represent higher priorities."
 *
 *  Thus, RTEMS Core has priorities run in the opposite sense of the POSIX API.
 *
 *  There are only 254 posix priority levels since a task at priority level
 *  255 would never run because of the RTEMS idle task.  This is necessary
 *  because GNAT maps the lowest Ada task priority to the lowest thread
 *  priority.  The lowest priority Ada task should get to run, so there is
 *  a fundamental conflict with having 255 priorities.
 */
 
#define POSIX_SCHEDULER_MAXIMUM_PRIORITY (254)
 
#define POSIX_SCHEDULER_MINIMUM_PRIORITY (1)
 
RTEMS_INLINE_ROUTINE boolean _POSIX_Priority_Is_valid(
  int priority
);
 
RTEMS_INLINE_ROUTINE Priority_Control _POSIX_Priority_To_core(
  int priority
);
 
RTEMS_INLINE_ROUTINE int _POSIX_Priority_From_core(
  Priority_Control priority
);
 
#include <rtems/posix/priority.inl>
 
#endif