1 files changed, 68 insertions, 0 deletions
diff --git a/cpukit/rtems/src/ratemoncancel.c b/cpukit/rtems/src/ratemoncancel.c
new file mode 100644
index 0000000000..7950fe58d1
--- /dev/null
+++ b/cpukit/rtems/src/ratemoncancel.c
@@ -0,0 +1,68 @@
+/*
+ *  Rate Monotonic Manager -- Cancel a Period
+ *
+ *  COPYRIGHT (c) 1989-2007.
+ *  On-Line Applications Research Corporation (OAR).
+ *
+ *  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.
+ *
+ *  $Id$
+ */
+
+#if HAVE_CONFIG_H
+#include "config.h"
+#endif
+
+#include <rtems/system.h>
+#include <rtems/rtems/status.h>
+#include <rtems/rtems/support.h>
+#include <rtems/score/isr.h>
+#include <rtems/score/object.h>
+#include <rtems/rtems/ratemon.h>
+#include <rtems/score/thread.h>
+
+/*PAGE
+ *
+ *  rtems_rate_monotonic_cancel
+ *
+ *  This directive allows a thread to cancel a rate monotonic timer.
+ *
+ *  Input parameters:
+ *    id - rate monotonic id
+ *
+ *  Output parameters:
+ *    RTEMS_SUCCESSFUL - if successful and caller is not the owning thread
+ *    error code       - if unsuccessful
+ */
+
+rtems_status_code rtems_rate_monotonic_cancel(
+  rtems_id id
+)
+{
+  Rate_monotonic_Control *the_period;
+  Objects_Locations       location;
+
+  the_period = _Rate_monotonic_Get( id, &location );
+  switch ( location ) {
+
+    case OBJECTS_LOCAL:
+      if ( !_Thread_Is_executing( the_period->owner ) ) {
+        _Thread_Enable_dispatch();
+        return RTEMS_NOT_OWNER_OF_RESOURCE;
+      }
+      (void) _Watchdog_Remove( &the_period->Timer );
+      the_period->state = RATE_MONOTONIC_INACTIVE;
+      _Thread_Enable_dispatch();
+      return RTEMS_SUCCESSFUL;
+
+#if defined(RTEMS_MULTIPROCESSING)
+    case OBJECTS_REMOTE:
+#endif
+    case OBJECTS_ERROR:
+      break;
+  }
+
+  return RTEMS_INVALID_ID;
+}