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diff --git a/include/distortos/internal/synchronization/SemaphoreFunctor.hpp b/include/distortos/internal/synchronization/SemaphoreFunctor.hpp
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+++ b/include/distortos/internal/synchronization/SemaphoreFunctor.hpp
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+/**
+ * \file
+ * \brief SemaphoreFunctor class header
+ *
+ * \author Copyright (C) 2014-2015 Kamil Szczygiel http://www.distortec.com http://www.freddiechopin.info
+ *
+ * \par License
+ * This Source Code Form is subject to the terms of the Mozilla Public License, v. 2.0. If a copy of the MPL was not
+ * distributed with this file, You can obtain one at http://mozilla.org/MPL/2.0/.
+ */
+
+#ifndef INCLUDE_DISTORTOS_INTERNAL_SYNCHRONIZATION_SEMAPHOREFUNCTOR_HPP_
+#define INCLUDE_DISTORTOS_INTERNAL_SYNCHRONIZATION_SEMAPHOREFUNCTOR_HPP_
+
+#include "estd/TypeErasedFunctor.hpp"
+
+namespace distortos
+{
+
+class Semaphore;
+
+namespace internal
+{
+
+/**
+ * \brief SemaphoreFunctor is a type-erased interface for functors which execute some action on semaphore (wait(),
+ * tryWait(), tryWaitFor(), tryWaitUntil(), ...).
+ *
+ * The functor will be called with one argument - \a semaphore - which is a reference to Semaphore object on which the
+ * action will be executed. Functor's operator should return zero if the action was executed successfully, error code
+ * otherwise.
+ */
+
+class SemaphoreFunctor : public estd::TypeErasedFunctor<int(Semaphore&)>
+{
+
+};
+
+}	// namespace internal
+
+}	// namespace distortos
+
+#endif	// INCLUDE_DISTORTOS_INTERNAL_SYNCHRONIZATION_SEMAPHOREFUNCTOR_HPP_