+/* -*- c++ -*- */
+/*
+ * Copyright 2009 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_GRUEL_MSG_ACCEPTER_H
+#define INCLUDED_GRUEL_MSG_ACCEPTER_H
+
+#include <gruel/pmt.h>
+#include <boost/shared_ptr.hpp>
+
+namespace gruel {
+
+ /*!
+ * \brief Virtual base class that accepts messages
+ */
+ class msg_accepter
+ {
+ public:
+ msg_accepter() {};
+ virtual ~msg_accepter();
+
+ /*!
+ * \brief send \p msg to \p msg_accepter
+ *
+ * Sending a message is an asynchronous operation. The \p post
+ * call will not wait for the message either to arrive at the
+ * destination or to be received.
+ */
+ virtual void post(pmt::pmt_t msg) = 0;
+ };
+
+ typedef boost::shared_ptr<msg_accepter> msg_accepter_sptr;
+
+} /* namespace gruel */
+
+#endif /* INCLUDED_GRUEL_MSG_ACCEPTER_H */