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diff --git a/gnuradio-runtime/lib/gr_scheduler_tpb.h b/gnuradio-runtime/lib/gr_scheduler_tpb.h
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+++ b/gnuradio-runtime/lib/gr_scheduler_tpb.h
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+/* -*- c++ -*- */
+/*
+ * Copyright 2008 Free Software Foundation, Inc.
+ *
+ * This file is part of GNU Radio
+ *
+ * GNU Radio 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 3, or (at your option)
+ * any later version.
+ *
+ * GNU Radio 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; if not, write to the Free Software Foundation, Inc.,
+ * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
+ */
+#ifndef INCLUDED_GR_SCHEDULER_TPB_H
+#define INCLUDED_GR_SCHEDULER_TPB_H
+
+#include <gr_runtime_api.h>
+#include <gr_scheduler.h>
+#include <thread/thread_group.h>
+
+/*!
+ * \brief Concrete scheduler that uses a kernel thread-per-block
+ */
+class GR_RUNTIME_API gr_scheduler_tpb : public gr_scheduler
+{
+  gr::thread::thread_group		       d_threads;
+
+protected:
+  /*!
+   * \brief Construct a scheduler and begin evaluating the graph.
+   *
+   * The scheduler will continue running until all blocks until they
+   * report that they are done or the stop method is called.
+   */
+  gr_scheduler_tpb(gr_flat_flowgraph_sptr ffg, int max_noutput_items);
+
+public:
+  static gr_scheduler_sptr make(gr_flat_flowgraph_sptr ffg, int max_noutput_items=100000);
+
+  ~gr_scheduler_tpb();
+
+  /*!
+   * \brief Tell the scheduler to stop executing.
+   */
+  void stop();
+
+  /*!
+   * \brief Block until the graph is done.
+   */
+  void wait();
+};
+
+
+#endif /* INCLUDED_GR_SCHEDULER_TPB_H */