Split ITRON semaphore manager into multiple files.

cpukit/itron/src/ref_sem.c

@@ -0,0 +1,59 @@
+/*
+ *  The license and distribution terms for this file may be
+ *  found in the file LICENSE in this distribution or at
+ *  http://www.OARcorp.com/rtems/license.html.
+ *
+ *  $Id$
+ */
+
+#include <itron.h>
+
+#include <rtems/itron/semaphore.h>
+#include <rtems/itron/task.h>
+#include <rtems/score/tod.h>
+
+/*
+ *  ref_sem - Reference Semaphore Status
+ *
+ *  This function implements the ITRON 3.0 ref_sem() service.
+ */
+
+ER ref_sem(
+  ID      semid,
+  T_RSEM *pk_rsem
+)
+{
+  ITRON_Semaphore_Control *the_semaphore;
+  Objects_Locations        location;
+  
+  if ( !pk_rsem )
+    return E_PAR;   /* XXX check this error code */
+
+  the_semaphore = _ITRON_Semaphore_Get( semid, &location );
+  switch ( location ) {   
+    case OBJECTS_REMOTE:               /* Multiprocessing not supported */
+    case OBJECTS_ERROR:
+      return _ITRON_Semaphore_Clarify_get_id_error( semid );
+  
+    case OBJECTS_LOCAL:
+      /*
+       *  Fill in the current semaphore count
+       */
+
+      pk_rsem->semcnt = _CORE_semaphore_Get_count( &the_semaphore->semaphore );
+
+      /*
+       *  Fill in whether or not there is a waiting task
+       */
+
+      if ( !_Thread_queue_First( &the_semaphore->semaphore.Wait_queue ) )
+        pk_rsem->wtsk = FALSE;
+      else
+        pk_rsem->wtsk = TRUE;
+
+      _Thread_Enable_dispatch();
+      return E_OK;
+  }   
+  return E_OK;
+}
+