1 files changed, 116 insertions, 0 deletions
diff --git a/cpukit/rtems/src/semsetpriority.c b/cpukit/rtems/src/semsetpriority.c
new file mode 100644
index 0000000000..b5dd1db101
--- /dev/null
+++ b/cpukit/rtems/src/semsetpriority.c
@@ -0,0 +1,116 @@
+/*
+ * Copyright (c) 2014 embedded brains GmbH.  All rights reserved.
+ *
+ *  embedded brains GmbH
+ *  Dornierstr. 4
+ *  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.org/license/LICENSE.
+ */
+
+#if HAVE_CONFIG_H
+  #include "config.h"
+#endif
+
+#include <rtems/rtems/semimpl.h>
+#include <rtems/rtems/attrimpl.h>
+#include <rtems/rtems/tasksimpl.h>
+#include <rtems/score/schedulerimpl.h>
+
+static rtems_status_code _Semaphore_Set_priority(
+  Semaphore_Control   *the_semaphore,
+  rtems_id             scheduler_id,
+  rtems_task_priority  new_priority,
+  rtems_task_priority *old_priority_p
+)
+{
+  rtems_status_code   sc;
+  rtems_attribute     attribute_set = the_semaphore->attribute_set;
+  rtems_task_priority old_priority;
+
+  new_priority = _RTEMS_tasks_Priority_to_Core( new_priority );
+
+#if defined(RTEMS_SMP)
+  if ( _Attributes_Is_multiprocessor_resource_sharing( attribute_set ) ) {
+    MRSP_Control *mrsp = &the_semaphore->Core_control.mrsp;
+    uint32_t scheduler_index = _Scheduler_Get_index_by_id( scheduler_id );
+
+    old_priority = _MRSP_Get_ceiling_priority( mrsp, scheduler_index );
+
+    if ( new_priority != RTEMS_CURRENT_PRIORITY ) {
+      _MRSP_Set_ceiling_priority( mrsp, scheduler_index, new_priority );
+    }
+
+    sc = RTEMS_SUCCESSFUL;
+  } else
+#endif
+  if ( _Attributes_Is_priority_ceiling( attribute_set ) ) {
+    CORE_mutex_Control *mutex = &the_semaphore->Core_control.mutex;
+
+    old_priority = mutex->Attributes.priority_ceiling;
+
+    if ( new_priority != RTEMS_CURRENT_PRIORITY ) {
+      mutex->Attributes.priority_ceiling = new_priority;
+    }
+
+    sc = RTEMS_SUCCESSFUL;
+  } else {
+    old_priority = 0;
+
+    sc = RTEMS_NOT_DEFINED;
+  }
+
+  *old_priority_p = _RTEMS_tasks_Priority_from_Core( old_priority );
+
+  _Objects_Put( &the_semaphore->Object );
+
+  return sc;
+}
+
+rtems_status_code rtems_semaphore_set_priority(
+  rtems_id             semaphore_id,
+  rtems_id             scheduler_id,
+  rtems_task_priority  new_priority,
+  rtems_task_priority *old_priority
+)
+{
+  Semaphore_Control *the_semaphore;
+  Objects_Locations  location;
+
+  if ( new_priority != RTEMS_CURRENT_PRIORITY &&
+       !_RTEMS_tasks_Priority_is_valid( new_priority ) ) {
+    return RTEMS_INVALID_PRIORITY;
+  }
+
+  if ( old_priority == NULL ) {
+    return RTEMS_INVALID_ADDRESS;
+  }
+
+  if ( !_Scheduler_Is_id_valid( scheduler_id ) ) {
+    return RTEMS_INVALID_ID;
+  }
+
+  the_semaphore = _Semaphore_Get( semaphore_id, &location );
+  switch ( location ) {
+    case OBJECTS_LOCAL:
+      return _Semaphore_Set_priority(
+        the_semaphore,
+        scheduler_id,
+        new_priority,
+        old_priority
+      );
+#if defined(RTEMS_MULTIPROCESSING)
+    case OBJECTS_REMOTE:
+      _Thread_Dispatch();
+      return RTEMS_ILLEGAL_ON_REMOTE_OBJECT;
+#endif
+    case OBJECTS_ERROR:
+      break;
+  }
+
+  return RTEMS_INVALID_ID;
+}