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diff --git a/gnuradio-runtime/swig/gr_msg_queue.i b/gnuradio-runtime/swig/gr_msg_queue.i
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+/* -*- c++ -*- */
+/*
+ * Copyright 2005,2009,2010,2011 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 GNU Radio; see the file COPYING.  If not, write to
+ * the Free Software Foundation, Inc., 51 Franklin Street,
+ * Boston, MA 02110-1301, USA.
+ */
+
+class gr_msg_queue;
+typedef boost::shared_ptr<gr_msg_queue> gr_msg_queue_sptr;
+%template(gr_msg_queue_sptr) boost::shared_ptr<gr_msg_queue>;
+
+%rename(msg_queue) gr_make_msg_queue;
+gr_msg_queue_sptr gr_make_msg_queue(unsigned limit=0);
+
+/*!
+ * \brief thread-safe message queue
+ */
+%ignore gr_msg_queue;
+class gr_msg_queue : public gr_msg_handler {
+public:
+  gr_msg_queue(unsigned int limit);
+  ~gr_msg_queue();
+
+  //! Generic msg_handler method: insert the message.
+  //void handle(gr_message_sptr msg) { insert_tail (msg); }
+
+  /*!
+   * \brief Insert message at tail of queue.
+   * \param msg message
+   *
+   * Block if queue if full.
+   */
+  //void insert_tail(gr_message_sptr msg);
+
+  /*!
+   * \brief Delete message from head of queue and return it.
+   * Block if no message is available.
+   */
+  //gr_message_sptr delete_head();
+
+  /*!
+   * \brief If there's a message in the q, delete it and return it.
+   * If no message is available, return 0.
+   */
+  gr_message_sptr delete_head_nowait();
+
+  //! is the queue empty?
+  bool empty_p() const;
+
+  //! is the queue full?
+  bool full_p() const;
+
+  //! return number of messages in queue
+  unsigned int count() const;
+
+  //! Delete all messages from the queue
+  void flush();
+};
+
+/*
+ * The following kludge-o-rama releases the Python global interpreter
+ * lock around these potentially blocking calls.  We don't want
+ * libgnuradio-core to be dependent on Python, thus we create these
+ * functions that serve as replacements for the normal C++ delete_head
+ * and insert_tail methods.  The %pythoncode smashes these new C++
+ * functions into the gr.msg_queue wrapper class, so that everything
+ * appears normal.  (An evil laugh is heard in the distance...)
+ */
+#ifdef SWIGPYTHON
+%inline %{
+  gr_message_sptr gr_py_msg_queue__delete_head(gr_msg_queue_sptr q) {
+    gr_message_sptr msg;
+    GR_PYTHON_BLOCKING_CODE(
+        msg = q->delete_head();
+    )
+    return msg;
+  }
+
+  void gr_py_msg_queue__insert_tail(gr_msg_queue_sptr q, gr_message_sptr msg) {
+    GR_PYTHON_BLOCKING_CODE(
+        q->insert_tail(msg);
+    )
+  }
+%}
+
+// smash in new python delete_head and insert_tail methods...
+%pythoncode %{
+gr_msg_queue_sptr.delete_head = gr_py_msg_queue__delete_head
+gr_msg_queue_sptr.insert_tail = gr_py_msg_queue__insert_tail
+gr_msg_queue_sptr.handle = gr_py_msg_queue__insert_tail
+%}
+#endif	// SWIGPYTHON