1 files changed, 44 insertions, 0 deletions
diff --git a/c/src/exec/posix/headers/priority.h b/c/src/exec/posix/headers/priority.h
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index 0000000000..c0253f3bab
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+++ b/c/src/exec/posix/headers/priority.h
@@ -0,0 +1,44 @@
+/*
+ *
+ *
+ *  $Id$
+ */
+
+#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