1 files changed, 212 insertions, 0 deletions
diff --git a/cpukit/score/src/schedulerprioritysmp.c b/cpukit/score/src/schedulerprioritysmp.c
new file mode 100644
index 0000000000..fed94b11e2
--- /dev/null
+++ b/cpukit/score/src/schedulerprioritysmp.c
@@ -0,0 +1,212 @@
+/**
+ * @file
+ *
+ * @brief Deterministic Priority SMP Scheduler Implementation
+ *
+ * @ingroup ScoreSchedulerSMP
+ */
+
+/*
+ * Copyright (c) 2013 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.com/license/LICENSE.
+ */
+
+#if HAVE_CONFIG_H
+  #include "config.h"
+#endif
+
+#include <rtems/score/schedulerprioritysmp.h>
+#include <rtems/score/schedulerpriorityimpl.h>
+#include <rtems/score/schedulersmpimpl.h>
+#include <rtems/score/wkspace.h>
+
+void _Scheduler_priority_SMP_Initialize( void )
+{
+  Scheduler_SMP_Control *self = _Workspace_Allocate_or_fatal_error(
+    sizeof( *self ) + PRIORITY_MAXIMUM * sizeof( Chain_Control )
+  );
+
+  _Chain_Initialize_empty( &self->scheduled );
+  _Scheduler_priority_Ready_queue_initialize( &self->ready[ 0 ] );
+
+  _Scheduler.information = self;
+}
+
+void _Scheduler_priority_SMP_Update( Thread_Control *thread )
+{
+  Scheduler_SMP_Control *self = _Scheduler_SMP_Instance();
+
+  _Scheduler_priority_Update_body( thread, &self->ready[ 0 ] );
+}
+
+static Thread_Control *_Scheduler_priority_SMP_Get_highest_ready(
+  Scheduler_SMP_Control *self
+)
+{
+  Thread_Control *highest_ready = NULL;
+
+  if ( !_Priority_bit_map_Is_empty() ) {
+    highest_ready = _Scheduler_priority_Ready_queue_first( &self->ready[ 0 ] );
+  }
+
+  return highest_ready;
+}
+
+static void _Scheduler_priority_SMP_Move_from_scheduled_to_ready(
+  Scheduler_SMP_Control *self,
+  Thread_Control *scheduled_to_ready
+)
+{
+  _Chain_Extract_unprotected( &scheduled_to_ready->Object.Node );
+  _Scheduler_priority_Ready_queue_enqueue_first( scheduled_to_ready );
+}
+
+static void _Scheduler_priority_SMP_Move_from_ready_to_scheduled(
+  Scheduler_SMP_Control *self,
+  Thread_Control *ready_to_scheduled
+)
+{
+  _Scheduler_priority_Ready_queue_extract( ready_to_scheduled );
+  _Scheduler_simple_Insert_priority_fifo(
+    &self->scheduled,
+    ready_to_scheduled
+  );
+}
+
+static void _Scheduler_priority_SMP_Insert_ready_lifo(
+  Scheduler_SMP_Control *self,
+  Thread_Control *thread
+)
+{
+  _Scheduler_priority_Ready_queue_enqueue( thread );
+}
+
+static void _Scheduler_priority_SMP_Insert_ready_fifo(
+  Scheduler_SMP_Control *self,
+  Thread_Control *thread
+)
+{
+  _Scheduler_priority_Ready_queue_enqueue_first( thread );
+}
+
+static void _Scheduler_priority_SMP_Do_extract(
+  Scheduler_SMP_Control *self,
+  Thread_Control *thread
+)
+{
+  bool is_scheduled = thread->is_scheduled;
+
+  ( void ) self;
+
+  thread->is_in_the_air = is_scheduled;
+  thread->is_scheduled = false;
+
+  if ( is_scheduled ) {
+    _Chain_Extract_unprotected( &thread->Object.Node );
+  } else {
+    _Scheduler_priority_Ready_queue_extract( thread );
+  }
+}
+
+void _Scheduler_priority_SMP_Block( Thread_Control *thread )
+{
+  Scheduler_SMP_Control *self = _Scheduler_SMP_Instance();
+
+  _Scheduler_SMP_Block(
+    self,
+    thread,
+    _Scheduler_priority_SMP_Do_extract,
+    _Scheduler_priority_SMP_Get_highest_ready,
+    _Scheduler_priority_SMP_Move_from_ready_to_scheduled
+  );
+}
+
+static void _Scheduler_priority_SMP_Enqueue_ordered(
+  Scheduler_SMP_Control *self,
+  Thread_Control *thread,
+  Chain_Node_order order,
+  Scheduler_SMP_Insert insert_ready,
+  Scheduler_SMP_Insert insert_scheduled
+)
+{
+  _Scheduler_SMP_Enqueue_ordered(
+    self,
+    thread,
+    order,
+    _Scheduler_priority_SMP_Get_highest_ready,
+    insert_ready,
+    insert_scheduled,
+    _Scheduler_priority_SMP_Move_from_ready_to_scheduled,
+    _Scheduler_priority_SMP_Move_from_scheduled_to_ready
+  );
+}
+
+void _Scheduler_priority_SMP_Enqueue_lifo( Thread_Control *thread )
+{
+  Scheduler_SMP_Control *self = _Scheduler_SMP_Instance();
+
+  _Scheduler_priority_SMP_Enqueue_ordered(
+    self,
+    thread,
+    _Scheduler_simple_Insert_priority_lifo_order,
+    _Scheduler_priority_SMP_Insert_ready_lifo,
+    _Scheduler_SMP_Insert_scheduled_lifo
+  );
+}
+
+void _Scheduler_priority_SMP_Enqueue_fifo( Thread_Control *thread )
+{
+  Scheduler_SMP_Control *self = _Scheduler_SMP_Instance();
+
+  _Scheduler_priority_SMP_Enqueue_ordered(
+    self,
+    thread,
+    _Scheduler_simple_Insert_priority_fifo_order,
+    _Scheduler_priority_SMP_Insert_ready_fifo,
+    _Scheduler_SMP_Insert_scheduled_fifo
+  );
+}
+
+void _Scheduler_priority_SMP_Extract( Thread_Control *thread )
+{
+  Scheduler_SMP_Control *self = _Scheduler_SMP_Instance();
+
+  _Scheduler_SMP_Extract(
+    self,
+    thread,
+    _Scheduler_priority_SMP_Do_extract
+  );
+}
+
+void _Scheduler_priority_SMP_Yield( Thread_Control *thread )
+{
+  ISR_Level level;
+
+  _ISR_Disable( level );
+
+  _Scheduler_priority_SMP_Extract( thread );
+  _Scheduler_priority_SMP_Enqueue_fifo( thread );
+
+  _ISR_Enable( level );
+}
+
+void _Scheduler_priority_SMP_Schedule( Thread_Control *thread )
+{
+  Scheduler_SMP_Control *self = _Scheduler_SMP_Instance();
+
+  _Scheduler_SMP_Schedule(
+    self,
+    thread,
+    _Scheduler_priority_SMP_Get_highest_ready,
+    _Scheduler_priority_SMP_Move_from_ready_to_scheduled
+  );
+}