rtems: Add system events

System events are similar to normal events.  They offer a second set of
events.  These events are intended for internal RTEMS use and should not
be used by applications (with the exception of the transient system
event).

1 files changed, 65 insertions, 0 deletions

diff --git a/cpukit/rtems/src/systemeventsend.c b/cpukit/rtems/src/systemeventsend.c
new file mode 100644
index 0000000000..13d31ccf85
--- /dev/null
+++ b/cpukit/rtems/src/systemeventsend.c
@@ -0,0 +1,65 @@
+/**
+ * @file
+ *
+ * @ingroup ClassicEventSystem
+ *
+ * @brief rtems_event_system_send() implementation.
+ */
+
+/*
+ * Copyright (c) 2012 embedded brains GmbH.  All rights reserved.
+ *
+ *  embedded brains GmbH
+ *  Obere Lagerstr. 30
+ *  82178 Puchheim
+ *  Germany
+ *  <rtems@embedded-brains.de>
+ *
+ * The license and distribution terms for this file may be
+ * found in the file LICENSE in this distribution or at
+ * http://www.rtems.com/license/LICENSE.
+ */
+
+#if HAVE_CONFIG_H
+  #include "config.h"
+#endif
+
+#include <rtems/rtems/event.h>
+#include <rtems/rtems/tasks.h>
+
+rtems_status_code rtems_event_system_send(
+  rtems_id        id,
+  rtems_event_set event_in
+)
+{
+  rtems_status_code  sc;
+  Thread_Control    *thread;
+  Objects_Locations  location;
+  RTEMS_API_Control *api;
+
+  thread = _Thread_Get( id, &location );
+  switch ( location ) {
+    case OBJECTS_LOCAL:
+      api = thread->API_Extensions[ THREAD_API_RTEMS ];
+      _Event_Surrender(
+        thread,
+        event_in,
+        &api->System_event,
+        &_System_event_Sync_state,
+        STATES_WAITING_FOR_SYSTEM_EVENT
+      );
+      _Thread_Enable_dispatch();
+      sc = RTEMS_SUCCESSFUL;
+      break;
+#ifdef RTEMS_MULTIPROCESSING
+    case OBJECTS_REMOTE:
+      sc = RTEMS_ILLEGAL_ON_REMOTE_OBJECT;
+      break;
+#endif
+    default:
+      sc = RTEMS_INVALID_ID;
+      break;
+  }
+
+  return sc;
+}