Initial work for G-code sender and more intensive usage of Boost

xs/include/boost/test/utils/trivial_singleton.hpp

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+//  (C) Copyright Gennadiy Rozental 2005-2008.
+//  Distributed under the Boost Software License, Version 1.0.
+//  (See accompanying file LICENSE_1_0.txt or copy at 
+//  http://www.boost.org/LICENSE_1_0.txt)
+
+//  See http://www.boost.org/libs/test for the library home page.
+//
+//  File        : $RCSfile$
+//
+//  Version     : $Revision: 49312 $
+//
+//  Description : simple helpers for creating cusom output manipulators
+// ***************************************************************************
+
+#ifndef BOOST_TEST_TRIVIAL_SIGNLETON_HPP_020505GER
+#define BOOST_TEST_TRIVIAL_SIGNLETON_HPP_020505GER
+
+#include <boost/config.hpp>
+#include <boost/detail/workaround.hpp>
+
+#include <boost/noncopyable.hpp>
+
+#include <boost/test/detail/suppress_warnings.hpp>
+
+//____________________________________________________________________________//
+
+namespace boost {
+
+namespace unit_test {
+
+// ************************************************************************** //
+// **************                   singleton                  ************** //
+// ************************************************************************** //
+
+template<typename Derived>
+class singleton : private boost::noncopyable {
+public:
+    static Derived& instance() { static Derived the_inst; return the_inst; }    
+protected:
+    singleton()  {}
+    ~singleton() {}
+};
+
+} // namespace unit_test
+
+#define BOOST_TEST_SINGLETON_CONS( type )       \
+friend class boost::unit_test::singleton<type>; \
+type() {}                                       \
+/**/
+
+#if BOOST_WORKAROUND(__DECCXX_VER, BOOST_TESTED_AT(60590042))
+
+#define BOOST_TEST_SINGLETON_INST( inst ) \
+template class unit_test::singleton< BOOST_JOIN( inst, _t ) > ; \
+namespace { BOOST_JOIN( inst, _t)& inst = BOOST_JOIN( inst, _t)::instance(); }
+
+#elif defined(__APPLE_CC__) && defined(__GNUC__) && __GNUC__ < 4
+#define BOOST_TEST_SINGLETON_INST( inst ) \
+static BOOST_JOIN( inst, _t)& inst = BOOST_JOIN (inst, _t)::instance();
+
+#else
+
+#define BOOST_TEST_SINGLETON_INST( inst ) \
+namespace { BOOST_JOIN( inst, _t)& inst = BOOST_JOIN( inst, _t)::instance(); }
+
+#endif
+
+} // namespace boost
+
+//____________________________________________________________________________//
+
+#include <boost/test/detail/enable_warnings.hpp>
+
+#endif // BOOST_TEST_TRIVIAL_SIGNLETON_HPP_020505GER