1 files changed, 76 insertions, 0 deletions
diff --git a/cpukit/itron/src/ref_mbf.c b/cpukit/itron/src/ref_mbf.c
new file mode 100644
index 0000000000..150b17ff88
--- /dev/null
+++ b/cpukit/itron/src/ref_mbf.c
@@ -0,0 +1,76 @@
+/*
+ *  ITRON Message Buffer Manager
+ *
+ *  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/msgbuffer.h>
+#include <rtems/itron/task.h>
+
+/*
+ *  ref_mbf - Reference Message Buffer Status
+ */
+
+ER ref_mbf(
+  T_RMBF *pk_rmbf,
+  ID      mbfid
+)
+{
+  ITRON_Message_buffer_Control      *the_message_buffer;
+  Objects_Locations                  location;
+  CORE_message_queue_Control        *the_core_msgq;
+        
+  if ( !pk_rmbf )
+    return E_PAR;   /* XXX check this error code */
+
+  the_message_buffer = _ITRON_Message_buffer_Get( mbfid, &location );
+  switch ( location ) {   
+  case OBJECTS_REMOTE:               /* Multiprocessing not supported */
+  case OBJECTS_ERROR:
+    return _ITRON_Message_buffer_Clarify_get_id_error( mbfid );
+  
+  case OBJECTS_LOCAL:
+    the_core_msgq = &the_message_buffer->message_queue;
+
+    /*
+     *  Fill in the size of message to be sent
+     */
+
+    if (the_core_msgq->number_of_pending_messages == 0) {
+      pk_rmbf->msgsz = 0;
+    } else {
+      pk_rmbf->msgsz = ((CORE_message_queue_Buffer_control *)
+        the_core_msgq->Pending_messages.first)->Contents.size;
+    }
+        
+    /*
+     *  Fill in the size of free buffer
+     */
+
+    pk_rmbf->frbufsz =
+      (the_core_msgq->maximum_pending_messages - 
+       the_core_msgq->number_of_pending_messages) *
+       the_core_msgq->maximum_message_size;
+
+
+    /*
+     *  Fill in whether or not there is a waiting task
+     */
+
+    if ( !_Thread_queue_First(&the_core_msgq->Wait_queue ) ) 
+       pk_rmbf->wtsk = FALSE;
+    else
+       pk_rmbf->wtsk =  TRUE;
+
+    pk_rmbf->stsk = FALSE;
+    _Thread_Enable_dispatch();
+    return E_OK;
+  }   
+  return E_OK;
+}