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diff --git a/src/menu/gl_delayed_allocation.hpp b/src/menu/gl_delayed_allocation.hpp
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+++ b/src/menu/gl_delayed_allocation.hpp
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+/*
+ * UltraStar Deluxe - Karaoke Game
+ *
+ * UltraStar Deluxe is the legal property of its developers, whose names
+ * are too numerous to list here. Please refer to the COPYRIGHT
+ * file distributed with this source distribution.
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License
+ * as published by the Free Software Foundation; either version 2
+ * of the License, or (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; see the file COPYING. If not, write to
+ * the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
+ * Boston, MA 02110-1301, USA.
+ *
+ */
+
+#ifndef GL_DELAYED_ALLOCATION_HPP
+#define GL_DELAYED_ALLOCATION_HPP
+
+#include <log4cpp/Category.hh>
+#include <boost/thread/shared_mutex.hpp>
+#include <boost/thread/condition.hpp>
+
+#include "utils/disposable.hpp"
+#include "utils/activatable.hpp"
+#include "drawable.hpp"
+
+namespace usdx
+{
+    class GlDelayedAllocation : public Activatable, public Disposable
+	{
+	private:
+		static log4cpp::Category& log;
+
+		bool initialized;
+		bool end_of_life;
+
+		boost::shared_mutex initialized_mutex;
+		boost::shared_mutex end_of_life_mutex;
+		boost::condition dispose_done;
+
+	protected:
+		virtual void gl_initialize(void) = 0;
+		virtual void gl_cleanup(void) = 0;
+
+		virtual void do_dispose(void);
+
+	public:
+		GlDelayedAllocation();
+		virtual ~GlDelayedAllocation();
+
+		virtual void enable(void);
+		virtual void disable(void);
+	};
+};
+
+#endif