From f3e2e07201c50033bf6c9d0c6a6f068557b4f17f Mon Sep 17 00:00:00 2001
From: Tom Rondeau <trondeau@vt.edu>
Date: Wed, 17 Apr 2013 13:43:52 -0400
Subject: runtime: converting runtime core to gr namespace, gnuradio include
dir.
---
gnuradio-runtime/include/gnuradio/basic_block.h | 354 ++++++++++++++++++++++++
1 file changed, 354 insertions(+)
create mode 100644 gnuradio-runtime/include/gnuradio/basic_block.h
(limited to 'gnuradio-runtime/include/gnuradio/basic_block.h')
diff --git a/gnuradio-runtime/include/gnuradio/basic_block.h b/gnuradio-runtime/include/gnuradio/basic_block.h
new file mode 100644
index 0000000000..be385465d1
--- /dev/null
+++ b/gnuradio-runtime/include/gnuradio/basic_block.h
@@ -0,0 +1,354 @@
+/* -*- c++ -*- */
+/*
+ * Copyright 2006,2008,2009,2011,2013 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.
+ */
+
+#ifndef INCLUDED_GR_BASIC_BLOCK_H
+#define INCLUDED_GR_BASIC_BLOCK_H
+
+#include <gnuradio/api.h>
+#include <gnuradio/sptr_magic.h>
+#include <gnuradio/msg_accepter.h>
+#include <gnuradio/runtime_types.h>
+#include <gnuradio/io_signature.h>
+#include <gnuradio/thread/thread.h>
+#include <boost/enable_shared_from_this.hpp>
+#include <boost/function.hpp>
+#include <boost/foreach.hpp>
+#include <boost/thread/condition_variable.hpp>
+#include <iostream>
+#include <string>
+#include <deque>
+#include <map>
+
+#ifdef GR_CTRLPORT
+#include <gnuradio/rpcregisterhelpers.h>
+#endif
+
+namespace gr {
+
+ /*!
+ * \brief The abstract base class for all signal processing blocks.
+ * \ingroup internal
+ *
+ * Basic blocks are the bare abstraction of an entity that has a
+ * name, a set of inputs and outputs, and a message queue. These
+ * are never instantiated directly; rather, this is the abstract
+ * parent class of both gr_hier_block, which is a recursive
+ * container, and block, which implements actual signal
+ * processing functions.
+ */
+ class GR_RUNTIME_API basic_block : public msg_accepter,
+ public boost::enable_shared_from_this<basic_block>
+ {
+ typedef boost::function<void(pmt::pmt_t)> msg_handler_t;
+
+ private:
+ //msg_handler_t d_msg_handler;
+ typedef std::map<pmt::pmt_t , msg_handler_t, pmt::comperator> d_msg_handlers_t;
+ d_msg_handlers_t d_msg_handlers;
+
+ typedef std::deque<pmt::pmt_t> msg_queue_t;
+ typedef std::map<pmt::pmt_t, msg_queue_t, pmt::comperator> msg_queue_map_t;
+ typedef std::map<pmt::pmt_t, msg_queue_t, pmt::comperator>::iterator msg_queue_map_itr;
+ std::map<pmt::pmt_t, boost::shared_ptr<boost::condition_variable>, pmt::comperator> msg_queue_ready;
+
+ gr::thread::mutex mutex; //< protects all vars
+
+ protected:
+ friend class flowgraph;
+ friend class flat_flowgraph; // TODO: will be redundant
+ friend class tpb_thread_body;
+
+ enum vcolor { WHITE, GREY, BLACK };
+
+ std::string d_name;
+ gr::io_signature::sptr d_input_signature;
+ gr::io_signature::sptr d_output_signature;
+ long d_unique_id;
+ long d_symbolic_id;
+ std::string d_symbol_name;
+ std::string d_symbol_alias;
+ vcolor d_color;
+ bool d_rpc_set;
+
+ msg_queue_map_t msg_queue;
+ std::vector<boost::any> d_rpc_vars; // container for all RPC variables
+
+ basic_block(void) {} // allows pure virtual interface sub-classes
+
+ //! Protected constructor prevents instantiation by non-derived classes
+ basic_block(const std::string &name,
+ gr::io_signature::sptr input_signature,
+ gr::io_signature::sptr output_signature);
+
+ //! may only be called during constructor
+ void set_input_signature(gr::io_signature::sptr iosig) {
+ d_input_signature = iosig;
+ }
+
+ //! may only be called during constructor
+ void set_output_signature(gr::io_signature::sptr iosig) {
+ d_output_signature = iosig;
+ }
+
+ /*!
+ * \brief Allow the flowgraph to set for sorting and partitioning
+ */
+ void set_color(vcolor color) { d_color = color; }
+ vcolor color() const { return d_color; }
+
+ /*!
+ * \brief Tests if there is a handler attached to port \p which_port
+ */
+ bool has_msg_handler(pmt::pmt_t which_port) {
+ return (d_msg_handlers.find(which_port) != d_msg_handlers.end());
+ }
+
+ /*
+ * This function is called by the runtime system to dispatch messages.
+ *
+ * The thread-safety guarantees mentioned in set_msg_handler are
+ * implemented by the callers of this method.
+ */
+ virtual void dispatch_msg(pmt::pmt_t which_port, pmt::pmt_t msg)
+ {
+ // AA Update this
+ if(has_msg_handler(which_port)) { // Is there a handler?
+ d_msg_handlers[which_port](msg); // Yes, invoke it.
+ }
+ }
+
+ // Message passing interface
+ pmt::pmt_t message_subscribers;
+
+ public:
+ virtual ~basic_block();
+ long unique_id() const { return d_unique_id; }
+ long symbolic_id() const { return d_symbolic_id; }
+ std::string name() const { return d_name; }
+ std::string symbol_name() const { return d_symbol_name; }
+ gr::io_signature::sptr input_signature() const { return d_input_signature; }
+ gr::io_signature::sptr output_signature() const { return d_output_signature; }
+ basic_block_sptr to_basic_block(); // Needed for Python type coercion
+ bool alias_set() { return !d_symbol_alias.empty(); }
+ std::string alias(){ return alias_set()?d_symbol_alias:symbol_name(); }
+ pmt::pmt_t alias_pmt(){ return pmt::intern(alias()); }
+ void set_block_alias(std::string name);
+
+ // ** Message passing interface **
+ void message_port_register_in(pmt::pmt_t port_id);
+ void message_port_register_out(pmt::pmt_t port_id);
+ void message_port_pub(pmt::pmt_t port_id, pmt::pmt_t msg);
+ void message_port_sub(pmt::pmt_t port_id, pmt::pmt_t target);
+ void message_port_unsub(pmt::pmt_t port_id, pmt::pmt_t target);
+
+ virtual bool message_port_is_hier(pmt::pmt_t port_id) { (void) port_id; std::cout << "is_hier\n"; return false; }
+ virtual bool message_port_is_hier_in(pmt::pmt_t port_id) { (void) port_id; std::cout << "is_hier_in\n"; return false; }
+ virtual bool message_port_is_hier_out(pmt::pmt_t port_id) { (void) port_id; std::cout << "is_hier_out\n"; return false; }
+
+ /*!
+ * \brief Get input message port names.
+ *
+ * Returns the available input message ports for a block. The
+ * return object is a PMT vector that is filled with PMT symbols.
+ */
+ pmt::pmt_t message_ports_in();
+
+ /*!
+ * \brief Get output message port names.
+ *
+ * Returns the available output message ports for a block. The
+ * return object is a PMT vector that is filled with PMT symbols.
+ */
+ pmt::pmt_t message_ports_out();
+
+ /*!
+ * Accept msg, place in queue, arrange for thread to be awakened if it's not already.
+ */
+ void _post(pmt::pmt_t which_port, pmt::pmt_t msg);
+
+ //! is the queue empty?
+ //bool empty_p(const pmt::pmt_t &which_port) const { return msg_queue[which_port].empty(); }
+ bool empty_p(pmt::pmt_t which_port) {
+ if(msg_queue.find(which_port) == msg_queue.end())
+ throw std::runtime_error("port does not exist!");
+ return msg_queue[which_port].empty();
+ }
+ bool empty_p() {
+ bool rv = true;
+ BOOST_FOREACH(msg_queue_map_t::value_type &i, msg_queue) {
+ rv &= msg_queue[i.first].empty();
+ }
+ return rv;
+ }
+
+ //! How many messages in the queue?
+ size_t nmsgs(pmt::pmt_t which_port) {
+ if(msg_queue.find(which_port) == msg_queue.end())
+ throw std::runtime_error("port does not exist!");
+ return msg_queue[which_port].size();
+ }
+
+ //| Acquires and release the mutex
+ void insert_tail( pmt::pmt_t which_port, pmt::pmt_t msg);
+ /*!
+ * \returns returns pmt at head of queue or pmt::pmt_t() if empty.
+ */
+ pmt::pmt_t delete_head_nowait( pmt::pmt_t which_port);
+
+ /*!
+ * \returns returns pmt at head of queue or pmt::pmt_t() if empty.
+ */
+ pmt::pmt_t delete_head_blocking( pmt::pmt_t which_port);
+
+ msg_queue_t::iterator get_iterator(pmt::pmt_t which_port) {
+ return msg_queue[which_port].begin();
+ }
+
+ void erase_msg(pmt::pmt_t which_port, msg_queue_t::iterator it) {
+ msg_queue[which_port].erase(it);
+ }
+
+ virtual bool has_msg_port(pmt::pmt_t which_port) {
+ if(msg_queue.find(which_port) != msg_queue.end()) {
+ return true;
+ }
+ if(pmt::dict_has_key(message_subscribers, which_port)) {
+ return true;
+ }
+ return false;
+ }
+
+#ifdef GR_CTRLPORT
+ /*!
+ * \brief Add an RPC variable (get or set).
+ *
+ * Using controlport, we create new getters/setters and need to
+ * store them. Each block has a vector to do this, and these never
+ * need to be accessed again once they are registered with the RPC
+ * backend. This function takes a
+ * boost::shared_sptr<rpcbasic_base> so that when the block is
+ * deleted, all RPC registered variables are cleaned up.
+ *
+ * \param s an rpcbasic_sptr of the new RPC variable register to store.
+ */
+ void add_rpc_variable(rpcbasic_sptr s)
+ {
+ d_rpc_vars.push_back(s);
+ }
+#endif /* GR_CTRLPORT */
+
+ /*!
+ * \brief Set up the RPC registered variables.
+ *
+ * This must be overloaded by a block that wants to use
+ * controlport. This is where rpcbasic_register_{get,set} pointers
+ * are created, which then get wrapped as shared pointers
+ * (rpcbasic_sptr(...)) and stored using add_rpc_variable.
+ */
+ virtual void setup_rpc() {};
+
+ /*!
+ * \brief Ask if this block has been registered to the RPC.
+ *
+ * We can only register a block once, so we use this to protect us
+ * from calling it multiple times.
+ */
+ bool is_rpc_set() { return d_rpc_set; }
+
+ /*!
+ * \brief When the block is registered with the RPC, set this.
+ */
+ void rpc_set() { d_rpc_set = true; }
+
+ /*!
+ * \brief Confirm that ninputs and noutputs is an acceptable combination.
+ *
+ * \param ninputs number of input streams connected
+ * \param noutputs number of output streams connected
+ *
+ * \returns true if this is a valid configuration for this block.
+ *
+ * This function is called by the runtime system whenever the
+ * topology changes. Most classes do not need to override this.
+ * This check is in addition to the constraints specified by the
+ * input and output gr::io_signatures.
+ */
+ virtual bool check_topology(int ninputs, int noutputs) {
+ (void)ninputs;
+ (void)noutputs;
+ return true;
+ }
+
+ /*!
+ * \brief Set the callback that is fired when messages are available.
+ *
+ * \p msg_handler can be any kind of function pointer or function object
+ * that has the signature:
+ * <pre>
+ * void msg_handler(pmt::pmt msg);
+ * </pre>
+ *
+ * (You may want to use boost::bind to massage your callable into
+ * the correct form. See gr::blocks::nop for an example that sets
+ * up a class method as the callback.)
+ *
+ * Blocks that desire to handle messages must call this method in
+ * their constructors to register the handler that will be invoked
+ * when messages are available.
+ *
+ * If the block inherits from block, the runtime system will
+ * ensure that msg_handler is called in a thread-safe manner, such
+ * that work and msg_handler will never be called concurrently.
+ * This allows msg_handler to update state variables without
+ * having to worry about thread-safety issues with work,
+ * general_work or another invocation of msg_handler.
+ *
+ * If the block inherits from hier_block2, the runtime system
+ * will ensure that no reentrant calls are made to msg_handler.
+ */
+ template <typename T> void set_msg_handler(pmt::pmt_t which_port, T msg_handler) {
+ if(msg_queue.find(which_port) == msg_queue.end()) {
+ throw std::runtime_error("attempt to set_msg_handler() on bad input message port!");
+ }
+ d_msg_handlers[which_port] = msg_handler_t(msg_handler);
+ }
+ };
+
+ inline bool operator<(basic_block_sptr lhs, basic_block_sptr rhs)
+ {
+ return lhs->unique_id() < rhs->unique_id();
+ }
+
+ typedef std::vector<basic_block_sptr> basic_block_vector_t;
+ typedef std::vector<basic_block_sptr>::iterator basic_block_viter_t;
+
+ GR_RUNTIME_API long basic_block_ncurrently_allocated();
+
+ inline std::ostream &operator << (std::ostream &os, basic_block_sptr basic_block)
+ {
+ os << basic_block->name() << "(" << basic_block->unique_id() << ")";
+ return os;
+ }
+
+} /* namespace gr */
+
+#endif /* INCLUDED_GR_BASIC_BLOCK_H */
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