From 82cb78d84c7962d2b55e1f83c9f8cbcbef386d87 Mon Sep 17 00:00:00 2001
From: Joel Sherrill <joel.sherrill@OARcorp.com>
Date: Tue, 2 Nov 1999 21:45:15 +0000
Subject: Split core message queue and watchdog handler objects into separate
 files.

---
 c/src/exec/score/src/coremsgflushsupp.c | 79 +++++++++++++++++++++++++++++++++
 1 file changed, 79 insertions(+)
 create mode 100644 c/src/exec/score/src/coremsgflushsupp.c

(limited to 'c/src/exec/score/src/coremsgflushsupp.c')

diff --git a/c/src/exec/score/src/coremsgflushsupp.c b/c/src/exec/score/src/coremsgflushsupp.c
new file mode 100644
index 0000000000..dde103a608
--- /dev/null
+++ b/c/src/exec/score/src/coremsgflushsupp.c
@@ -0,0 +1,79 @@
+/*
+ *  CORE Message Queue Handler
+ *
+ *  DESCRIPTION:
+ *
+ *  This package is the implementation of the CORE Message Queue Handler.
+ *  This core object provides task synchronization and communication functions
+ *  via messages passed to queue objects.
+ *
+ *  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/chain.h>
+#include <rtems/score/isr.h>
+#include <rtems/score/object.h>
+#include <rtems/score/coremsg.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
+
+/*PAGE
+ *
+ *  _CORE_message_queue_Flush_support
+ *
+ *  This message handler routine removes all messages from a message queue
+ *  and returns them to the inactive message pool.  The number of messages
+ *  flushed from the queue is returned
+ *
+ *  Input parameters:
+ *    the_message_queue - pointer to message queue
+ *
+ *  Output parameters:
+ *    returns - number of messages placed on inactive chain
+ *
+ *  INTERRUPT LATENCY:
+ *    only case
+ */
+
+unsigned32 _CORE_message_queue_Flush_support(
+  CORE_message_queue_Control *the_message_queue
+)
+{
+  ISR_Level   level;
+  Chain_Node *inactive_first;
+  Chain_Node *message_queue_first;
+  Chain_Node *message_queue_last;
+  unsigned32  count;
+
+  _ISR_Disable( level );
+    inactive_first      = the_message_queue->Inactive_messages.first;
+    message_queue_first = the_message_queue->Pending_messages.first;
+    message_queue_last  = the_message_queue->Pending_messages.last;
+
+    the_message_queue->Inactive_messages.first = message_queue_first;
+    message_queue_last->next = inactive_first;
+    inactive_first->previous = message_queue_last;
+    message_queue_first->previous          =
+               _Chain_Head( &the_message_queue->Inactive_messages );
+
+    _Chain_Initialize_empty( &the_message_queue->Pending_messages );
+
+    count = the_message_queue->number_of_pending_messages;
+    the_message_queue->number_of_pending_messages = 0;
+  _ISR_Enable( level );
+  return count;
+}
+
-- 
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