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diff --git a/gmcop/giomanager.h b/gmcop/giomanager.h
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+    /*
+
+    Copyright (C) 2001 Stefan Westerfeld
+                       stefan@space.twc.de
+
+    This library is free software; you can redistribute it and/or
+    modify it under the terms of the GNU Library General Public
+    License as published by the Free Software Foundation; either
+    version 2 of the License, or (at your option) any later version.
+  
+    This library 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
+    Library General Public License for more details.
+   
+    You should have received a copy of the GNU Library General Public License
+    along with this library; see the file COPYING.LIB.  If not, write to
+    the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
+    Boston, MA 02111-1307, USA.
+
+    */
+
+#ifndef ARTS_GIOMANAGER_H
+#define ARTS_GIOMANAGER_H
+
+#include <glib.h>
+#include <iomanager.h>
+#include <list>
+#include <stack>
+#include <map>
+#include "arts_export.h"
+/*
+ * BC - Status (2002-03-08): GIOManager
+ *
+ * This class will be kept binary compatible (d ptr for extensions).
+ */
+
+namespace Arts {
+
+class GIOWatch;
+class GIOManagerPrivate;
+struct GIOManagerSource;
+class GIOTimeWatch;
+class GIOManagerBlocking;
+
+/**
+ * GIOManager performs MCOP I/O inside the Glib event loop. This way, you will
+ * be able to receive requests and notifications inside Glib application. The
+ * usual way to set it up is:
+ *
+ * <pre>
+ * GMainLoop *main_loop = g_main_new(FALSE);  // as usual
+ *
+ * Arts::GIOManager iomanager;
+ * Arts::Dispatcher dispatcher(&iomanager);
+ *
+ * g_main_run(main_loop);                     // as usual
+ * </pre>
+ */
+class ARTS_EXPORT GIOManager : public IOManager {
+private:
+	GIOManagerPrivate *d;
+
+protected:
+	std::list<GIOWatch *> fdList;
+	std::list<GIOTimeWatch *> timeList;
+	int level;
+	bool _blocking;
+	bool fileDescriptorsNeedRecheck;
+	GMainContext *context;
+	GIOManagerSource *source;
+	GIOManagerBlocking *gioManagerBlocking;
+
+public:
+	GIOManager(GMainContext *context = 0);
+	~GIOManager();
+
+	void processOneEvent(bool blocking);
+	void run();
+	void terminate();
+	void watchFD(int fd, int types, IONotify *notify);
+	void remove(IONotify *notify, int types);
+	void addTimer(int milliseconds, TimeNotify *notify);
+	void removeTimer(TimeNotify *notify);
+
+	/**
+	 * This controls what GIOManager will do while waiting for the result
+	 * of an MCOP request, the possibilities are:
+	 *
+	 * @li block until the request is completed (true)
+	 * @li open a local event loop (false)
+	 *
+	 * It is much easier to write working and reliable code with blocking
+	 * enabled, so this is the default. If you disable blocking, you have
+	 * to deal with the fact that timers, user interaction and similar
+	 * "unpredictable" things will possibly influence your code in all
+	 * places where you make a remote MCOP call (which is quite often in
+	 * MCOP applications).
+	 */
+	void setBlocking(bool blocking);
+
+	/* GSource stuff: */
+
+	/**
+	 *  - internal -
+	 *
+	 *  (implements the GSource prepare)
+	 */
+	gboolean prepare(gint *timeout);
+
+	/**
+	 *  - internal -
+	 *
+	 *  (implements the GSource check)
+	 */
+	gboolean check();
+
+	/**
+	 *  - internal -
+	 *
+	 *  (implements the GSource dispatch)
+	 */
+	gboolean dispatch(GSourceFunc callback, gpointer user_data);
+};
+
+}
+
+#endif /* ARTS_GIOMANAGER_H */