From cc2bc3025c6ec078f8428116b3b45a14c0d017e7 Mon Sep 17 00:00:00 2001
From: Joel Sherrill <joel.sherrill@OARcorp.com>
Date: Mon, 17 May 1999 23:06:03 +0000
Subject: Split Event Manager into one routine per file.

---
 cpukit/rtems/src/eventtimeout.c | 76 +++++++++++++++++++++++++++++++++++++++++
 1 file changed, 76 insertions(+)
 create mode 100644 cpukit/rtems/src/eventtimeout.c

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

diff --git a/cpukit/rtems/src/eventtimeout.c b/cpukit/rtems/src/eventtimeout.c
new file mode 100644
index 0000000000..f170a90f68
--- /dev/null
+++ b/cpukit/rtems/src/eventtimeout.c
@@ -0,0 +1,76 @@
+/*
+ *  Event 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/rtems/status.h>
+#include <rtems/rtems/event.h>
+#include <rtems/score/isr.h>
+#include <rtems/score/object.h>
+#include <rtems/rtems/options.h>
+#include <rtems/score/states.h>
+#include <rtems/score/thread.h>
+#include <rtems/rtems/tasks.h>
+
+/*PAGE
+ *
+ *  _Event_Timeout
+ *
+ *  This routine processes a thread which timeouts while waiting to
+ *  receive an event_set. It is called by the watchdog handler.
+ *
+ *  Input parameters:
+ *    id - thread id
+ *
+ *  Output parameters: NONE
+ */
+
+void _Event_Timeout(
+  Objects_Id  id,
+  void       *ignored
+)
+{
+  Thread_Control *the_thread;
+  Objects_Locations      location;
+
+  the_thread = _Thread_Get( id, &location );
+  switch ( location ) {
+    case OBJECTS_REMOTE:  /* impossible */
+    case OBJECTS_ERROR:
+      break;
+    case OBJECTS_LOCAL:
+ 
+      /*
+       *  If the event manager is not synchronized, then it is either
+       *  "nothing happened", "timeout", or "satisfied".   If the_thread
+       *  is the executing thread, then it is in the process of blocking
+       *  and it is the thread which is responsible for the synchronization 
+       *  process.
+       *
+       *  If it is not satisfied, then it is "nothing happened" and
+       *  this is the "timeout" transition.  After a request is satisfied,
+       *  a timeout is not allowed to occur.
+       */
+
+      if ( _Event_Sync_state != EVENT_SYNC_SYNCHRONIZED && 
+           _Thread_Is_executing( the_thread ) ) {
+        if ( _Event_Sync_state != EVENT_SYNC_SATISFIED )
+          _Event_Sync_state = EVENT_SYNC_TIMEOUT;
+      } else {
+        the_thread->Wait.return_code = RTEMS_TIMEOUT;
+        _Thread_Unblock( the_thread );
+      }
+      _Thread_Unnest_dispatch();
+      break;
+  }
+}
-- 
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