score: Delete _Chain_Prepend()

This function is not used in the score.

Update #2555.

1 files changed, 139 insertions, 0 deletions

diff --git a/cpukit/sapi/src/chainprotected.c b/cpukit/sapi/src/chainprotected.c
new file mode 100644
index 0000000000..ce8bc5eb39
--- /dev/null
+++ b/cpukit/sapi/src/chainprotected.c
@@ -0,0 +1,139 @@
+/*
+ * Copyright (c) 2013, 2016 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/chain.h>
+#include <rtems/rtems/intr.h>
+
+RTEMS_INTERRUPT_LOCK_DEFINE( static, chain_lock, "Chains" )
+
+static void chain_acquire( rtems_interrupt_lock_context *lock_context )
+{
+  rtems_interrupt_lock_acquire( &chain_lock, lock_context );
+}
+
+static void chain_release( rtems_interrupt_lock_context *lock_context )
+{
+  rtems_interrupt_lock_release( &chain_lock, lock_context );
+}
+
+#if defined( RTEMS_SMP )
+
+void rtems_chain_extract( rtems_chain_node *node )
+{
+  rtems_interrupt_lock_context lock_context;
+
+  chain_acquire( &lock_context );
+  _Chain_Extract_unprotected( node );
+  chain_release( &lock_context );
+}
+
+rtems_chain_node *rtems_chain_get( rtems_chain_control *chain )
+{
+  rtems_chain_node *node;
+  rtems_interrupt_lock_context lock_context;
+
+  chain_acquire( &lock_context );
+  node = _Chain_Get_unprotected( chain );
+  chain_release( &lock_context );
+
+  return node;
+}
+
+void rtems_chain_insert( rtems_chain_node *after_node, rtems_chain_node *node )
+{
+  rtems_interrupt_lock_context lock_context;
+
+  chain_acquire( &lock_context );
+  _Chain_Insert_unprotected( after_node, node );
+  chain_release( &lock_context );
+}
+
+void rtems_chain_append(
+  rtems_chain_control *chain,
+  rtems_chain_node *node
+)
+{
+  rtems_interrupt_lock_context lock_context;
+
+  chain_acquire( &lock_context );
+  _Chain_Append_unprotected( chain, node );
+  chain_release( &lock_context );
+}
+
+#endif /* defined( RTEMS_SMP ) */
+
+void rtems_chain_prepend(
+  rtems_chain_control *chain,
+  rtems_chain_node *node
+)
+{
+  rtems_interrupt_lock_context lock_context;
+
+  chain_acquire( &lock_context );
+  _Chain_Prepend_unprotected( chain, node );
+  chain_release( &lock_context );
+}
+
+#if defined( RTEMS_SMP )
+
+bool rtems_chain_append_with_empty_check(
+  rtems_chain_control *chain,
+  rtems_chain_node *node
+)
+{
+  bool was_empty;
+  rtems_interrupt_lock_context lock_context;
+
+  chain_acquire( &lock_context );
+  was_empty = _Chain_Append_with_empty_check_unprotected( chain, node );
+  chain_release( &lock_context );
+
+  return was_empty;
+}
+
+bool rtems_chain_prepend_with_empty_check(
+  rtems_chain_control *chain,
+  rtems_chain_node *node
+)
+{
+  bool was_empty;
+  rtems_interrupt_lock_context lock_context;
+
+  chain_acquire( &lock_context );
+  was_empty = _Chain_Prepend_with_empty_check_unprotected( chain, node );
+  chain_release( &lock_context );
+
+  return was_empty;
+}
+
+bool rtems_chain_get_with_empty_check(
+  rtems_chain_control *chain,
+  rtems_chain_node **node
+)
+{
+  bool is_empty_now;
+  rtems_interrupt_lock_context lock_context;
+
+  chain_acquire( &lock_context );
+  is_empty_now = _Chain_Get_with_empty_check_unprotected( chain, node );
+  chain_release( &lock_context );
+
+  return is_empty_now;
+}
+
+#endif /* defined( RTEMS_SMP ) */