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-rw-r--r--cpukit/rtems/src/barrierrelease.c67
1 files changed, 67 insertions, 0 deletions
diff --git a/cpukit/rtems/src/barrierrelease.c b/cpukit/rtems/src/barrierrelease.c
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+++ b/cpukit/rtems/src/barrierrelease.c
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+/*
+ * Barrier Manager -- Release Tasks Waitng at a Barrier
+ *
+ * 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/rtems/barrier.h>
+#include <rtems/score/thread.h>
+#include <rtems/score/threadq.h>
+
+/*
+ * rtems_barrier_release
+ *
+ * This directive releases all threads waiting at a barrier.
+ *
+ * Input parameters:
+ * id - barrier id
+ * released - pointer to number of threads unblocked
+ *
+ * Output parameters:
+ * RTEMS_SUCCESSFUL - if successful
+ * error code - if unsuccessful
+ * *released - number of threads unblocked
+ */
+
+rtems_status_code rtems_barrier_release(
+ rtems_id id,
+ uint32_t *released
+)
+{
+ Barrier_Control *the_barrier;
+ Objects_Locations location;
+
+ if ( !released )
+ return RTEMS_INVALID_ADDRESS;
+
+ the_barrier = _Barrier_Get( id, &location );
+ switch ( location ) {
+
+ case OBJECTS_LOCAL:
+ *released = _CORE_barrier_Release( &the_barrier->Barrier, id, NULL );
+ _Thread_Enable_dispatch();
+ return RTEMS_SUCCESSFUL;
+
+#if defined(RTEMS_MULTIPROCESSING)
+ case OBJECTS_REMOTE:
+#endif
+ case OBJECTS_ERROR:
+ break;
+ }
+
+ return RTEMS_INVALID_ID;
+}