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diff --git a/rtl-chain-iterator.h b/rtl-chain-iterator.h
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+/*
+ *  COPYRIGHT (c) 2010 Chris Johns <chrisj@rtems.org>
+ *
+ *  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.
+ *
+ *  $Id$
+ */
+/**
+ * @file
+ *
+ * @ingroup rtems_rtl
+ *
+ * @brief RTEMS Run-Time Linker Chain Iterator.
+ */
+
+#if !defined (_RTEMS_RTL_CHAIN_ITERATOR_H_)
+#define _RTEMS_RTL_CHAIN_ITERATOR_H_
+
+#ifdef __cplusplus
+extern "C" {
+#endif /* __cplusplus */
+
+#include <rtems/chain.h>
+
+/**
+ * Chain iterator handler.
+ */
+typedef bool (*rtems_chain_iterator) (rtems_chain_node* node, void* data);
+
+/**
+ * Iterate a chain of nodes invoking the iterator handler. Supply a data
+ * pointer the iterator moves data between the invoker and the iterator.
+ *
+ * The iterator allows removal of the node from the chain.
+ *
+ * @param chain The chain of nodes to iterator over.
+ * @param iterator The iterator handler called once for each node.
+ * @param data Pointer to the data used by the iterator.
+ * @retval true The whole chain was iterated over.
+ * @retval false The iterator returned false.
+ */
+bool
+rtems_rtl_chain_iterate (rtems_chain_control* chain,
+                         rtems_chain_iterator iterator,
+                         void*                data);
+
+/**
+ * Count the number of nodes on the chain.
+ *
+ * @param chain The chain to count the nodes of.
+ * @return int The number of nodes.
+ */
+int rtems_rtl_chain_count (rtems_chain_control* chain);
+
+#ifdef __cplusplus
+}
+#endif /* __cplusplus */
+
+#endif