From 1e1b3e00d1d7dcf8ae674db66250fbccab293f4f Mon Sep 17 00:00:00 2001
From: Joel Sherrill <joel.sherrill@OARcorp.com>
Date: Mon, 17 May 1999 22:52:59 +0000
Subject: Split Message Manager into one routine per file.

---
 cpukit/rtems/src/msgqflush.c | 87 ++++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 87 insertions(+)
 create mode 100644 cpukit/rtems/src/msgqflush.c

(limited to 'cpukit/rtems/src/msgqflush.c')

diff --git a/cpukit/rtems/src/msgqflush.c b/cpukit/rtems/src/msgqflush.c
new file mode 100644
index 0000000000..969180e412
--- /dev/null
+++ b/cpukit/rtems/src/msgqflush.c
@@ -0,0 +1,87 @@
+/*
+ *  Message Queue Manager
+ *
+ *
+ *  COPYRIGHT (c) 1989-1998.
+ *  On-Line Applications Research Corporation (OAR).
+ *  Copyright assigned to U.S. Government, 1994.
+ *
+ *  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 <rtems/system.h>
+#include <rtems/score/sysstate.h>
+#include <rtems/score/chain.h>
+#include <rtems/score/isr.h>
+#include <rtems/score/coremsg.h>
+#include <rtems/score/object.h>
+#include <rtems/score/states.h>
+#include <rtems/score/thread.h>
+#include <rtems/score/wkspace.h>
+#if defined(RTEMS_MULTIPROCESSING)
+#include <rtems/score/mpci.h>
+#endif
+#include <rtems/rtems/status.h>
+#include <rtems/rtems/attr.h>
+#include <rtems/rtems/message.h>
+#include <rtems/rtems/options.h>
+#include <rtems/rtems/support.h>
+
+/*PAGE
+ *
+ *  rtems_message_queue_flush
+ *
+ *  This directive removes all pending messages from a queue and returns
+ *  the number of messages removed.  If no messages were present then
+ *  a count of zero is returned.
+ *
+ *  Input parameters:
+ *    id    - queue id
+ *    count - return area for count
+ *
+ *  Output parameters:
+ *    count             - number of messages removed ( 0 = empty queue )
+ *    RTEMS_SUCCESSFUL - if successful
+ *    error code        - if unsuccessful
+ */
+
+rtems_status_code rtems_message_queue_flush(
+  Objects_Id  id,
+  unsigned32 *count
+)
+{
+  register Message_queue_Control *the_message_queue;
+  Objects_Locations               location;
+
+  the_message_queue = _Message_queue_Get( id, &location );
+  switch ( location ) {
+    case OBJECTS_REMOTE:
+#if defined(RTEMS_MULTIPROCESSING)
+      _Thread_Executing->Wait.return_argument = count;
+
+      return
+        _Message_queue_MP_Send_request_packet(
+          MESSAGE_QUEUE_MP_FLUSH_REQUEST,
+          id,
+          0,                               /* buffer not used */
+          0,                               /* size */
+          0,                               /* option_set not used */
+          MPCI_DEFAULT_TIMEOUT
+        );
+#endif
+
+    case OBJECTS_ERROR:
+      return RTEMS_INVALID_ID;
+
+    case OBJECTS_LOCAL:
+      *count = _CORE_message_queue_Flush( &the_message_queue->message_queue );
+      _Thread_Enable_dispatch();
+      return RTEMS_SUCCESSFUL;
+  }
+
+  return RTEMS_INTERNAL_ERROR;   /* unreached - only to remove warnings */
+}
-- 
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