From 5e96e917578509149814e300d56d2a7d47b7f268 Mon Sep 17 00:00:00 2001
From: Joel Sherrill <joel.sherrill@OARcorp.com>
Date: Wed, 17 Nov 1999 15:24:11 +0000
Subject: Updated Mailbox Manager submitted and split into multiple files.

---
 c/src/exec/itron/src/ref_mbx.c | 59 ++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 59 insertions(+)
 create mode 100644 c/src/exec/itron/src/ref_mbx.c

(limited to 'c/src/exec/itron/src/ref_mbx.c')

diff --git a/c/src/exec/itron/src/ref_mbx.c b/c/src/exec/itron/src/ref_mbx.c
new file mode 100644
index 0000000000..ac148c89bf
--- /dev/null
+++ b/c/src/exec/itron/src/ref_mbx.c
@@ -0,0 +1,59 @@
+/*
+ *  ITRON 3.0 Mailbox 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/mbox.h>
+#include <rtems/itron/task.h>
+
+/*
+ *  ref_mbx - Reference Mailbox Status
+ */
+
+ER ref_mbx(
+  T_RMBX *pk_rmbx,
+  ID      mbxid
+)
+{
+  register ITRON_Mailbox_Control *the_mailbox;
+  Objects_Locations               location;
+  Chain_Control                  *pending;
+
+  if ( !pk_rmbx )
+    return E_PAR;
+
+  the_mailbox = _ITRON_Mailbox_Get( mbxid, &location );
+  switch ( location ) {
+    case OBJECTS_REMOTE:
+    case OBJECTS_ERROR:
+      return _ITRON_Mailbox_Clarify_get_id_error( mbxid );
+
+    case OBJECTS_LOCAL:
+
+      pending = &the_mailbox->message_queue.Pending_messages;
+      if ( _Chain_Is_empty( pending ) )
+        pk_rmbx->pk_msg = NULL;
+      else 
+        pk_rmbx->pk_msg = (T_MSG *) pending->first;
+
+      /*
+       *  Fill in whether or not there is a waiting task
+       */
+
+      if ( !_Thread_queue_First( &the_mailbox->message_queue.Wait_queue ) )
+        pk_rmbx->wtsk = FALSE;
+      else
+        pk_rmbx->wtsk = TRUE;
+
+      break;
+  }
+  _ITRON_return_errorno( E_OK );
+}
+
-- 
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