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+/* This file is part of Raul.
+ * Copyright (C) 2007 Dave Robillard <http://drobilla.net>
+ * 
+ * Raul 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.
+ * 
+ * Raul 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 details.
+ * 
+ * You should have received a copy of the GNU General Public License along
+ * with this program; if not, write to the Free Software Foundation, Inc.,
+ * 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
+ */
+
+#ifndef RAUL_SLAVE_HPP
+#define RAUL_SLAVE_HPP
+
+#include <pthread.h>
+#include <raul/Semaphore.hpp>
+#include <raul/Thread.hpp>
+
+namespace Raul {
+
+
+/** Thread driven by (realtime safe) signals.
+ *
+ * Use this to perform some task in a separate thread you want to 'drive'
+ * from a realtime (or otherwise) thread.
+ *
+ * \ingroup raul
+ */
+class Slave : public Thread
+{
+public:
+	Slave() : _whip(0) {}
+
+	/** Tell the slave to do whatever work it does.  Realtime safe. */
+	inline void whip() { _whip.post(); }
+
+protected:
+	/** Worker method.
+	 *
+	 * This is called once from this thread every time whip() is called.
+	 * Implementations likely want to put a single (non loop) chunk of code
+	 * here, e.g. to process an event.
+	 */
+	virtual void _whipped() = 0;
+
+	Semaphore _whip;
+
+private:
+	inline void _run()
+	{
+		while (true) {
+			_whip.wait();
+			_whipped();
+		}
+	}
+};
+
+
+} // namespace Raul
+
+#endif // RAUL_SLAVE_HPP