score: Introduce scheduler nodes

Rename scheduler per-thread information into scheduler nodes using
Scheduler_Node as the base type.  Use inheritance for specialized
schedulers.

Move the scheduler specific states from the thread control block into
the scheduler node structure.

Validate the SMP scheduler node state transitions in case RTEMS_DEBUG is
defined.

1 files changed, 39 insertions, 0 deletions

diff --git a/cpukit/score/src/schedulersmpvalidstatechanges.c b/cpukit/score/src/schedulersmpvalidstatechanges.c
new file mode 100644
index 0000000000..61f6a7e2d5
--- /dev/null
+++ b/cpukit/score/src/schedulersmpvalidstatechanges.c
@@ -0,0 +1,39 @@
+/**
+ * @file
+ *
+ * @ingroup ScoreSchedulerSMP
+ *
+ * @brief SMP Scheduler Implementation
+ */
+
+/*
+ * 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/score/schedulerpriorityimpl.h>
+
+/*
+ * Table with all valid state transitions.  It is used in
+ * _Scheduler_SMP_Node_change_state() in case RTEMS_DEBUG is defined.
+ */
+const bool _Scheduler_SMP_Node_valid_state_changes[ 4 ][ 4 ] = {
+  /*                 BLOCKED SCHEDULED READY  IN THE AIR */
+  /* BLOCKED    */ { false,  true,     true,  false },
+  /* SCHEDULED  */ { false,  false,    true,  true },
+  /* READY      */ { true,   true,     false, false },
+  /* IN THE AIR */ { true,   true,     true,  false }
+};