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authorTom Rondeau <trondeau@vt.edu>2013-04-17 13:43:52 -0400
committerTom Rondeau <trondeau@vt.edu>2013-04-29 14:52:56 -0400
commitf3e2e07201c50033bf6c9d0c6a6f068557b4f17f (patch)
tree140b3c2d20a951ffd4abd564c3378ee2e2f9fc7c /gnuradio-runtime/lib/basic_block.cc
parent35303ae975a5b1bdecc2492bc96e2b8e89b62a3d (diff)
runtime: converting runtime core to gr namespace, gnuradio include dir.
Diffstat (limited to 'gnuradio-runtime/lib/basic_block.cc')
-rw-r--r--gnuradio-runtime/lib/basic_block.cc233
1 files changed, 233 insertions, 0 deletions
diff --git a/gnuradio-runtime/lib/basic_block.cc b/gnuradio-runtime/lib/basic_block.cc
new file mode 100644
index 0000000000..8060c5355c
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+++ b/gnuradio-runtime/lib/basic_block.cc
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+/* -*- c++ -*- */
+/*
+ * Copyright 2006,2012-2013 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.
+ */
+
+#ifdef HAVE_CONFIG_H
+#include "config.h"
+#endif
+
+#include <gnuradio/basic_block.h>
+#include <gnuradio/block_registry.h>
+#include <stdexcept>
+#include <sstream>
+#include <iostream>
+
+namespace gr {
+
+ static long s_next_id = 0;
+ static long s_ncurrently_allocated = 0;
+
+ long
+ basic_block_ncurrently_allocated()
+ {
+ return s_ncurrently_allocated;
+ }
+
+ basic_block::basic_block(const std::string &name,
+ io_signature::sptr input_signature,
+ io_signature::sptr output_signature)
+ : d_name(name),
+ d_input_signature(input_signature),
+ d_output_signature(output_signature),
+ d_unique_id(s_next_id++),
+ d_symbolic_id(global_block_registry.block_register(this)),
+ d_symbol_name(global_block_registry.register_symbolic_name(this)),
+ d_color(WHITE),
+ d_rpc_set(false),
+ message_subscribers(pmt::make_dict())
+ {
+ s_ncurrently_allocated++;
+ }
+
+ basic_block::~basic_block()
+ {
+ s_ncurrently_allocated--;
+ global_block_registry.block_unregister(this);
+ }
+
+ basic_block_sptr
+ basic_block::to_basic_block()
+ {
+ return shared_from_this();
+ }
+
+ void
+ basic_block::set_block_alias(std::string name)
+ {
+ global_block_registry.register_symbolic_name(this, name);
+ }
+
+ // ** Message passing interface **
+
+ // - register a new input message port
+ void
+ basic_block::message_port_register_in(pmt::pmt_t port_id)
+ {
+ if(!pmt::is_symbol(port_id)) {
+ throw std::runtime_error("message_port_register_in: bad port id");
+ }
+ msg_queue[port_id] = msg_queue_t();
+ msg_queue_ready[port_id] = boost::shared_ptr<boost::condition_variable>(new boost::condition_variable());
+ }
+
+ pmt::pmt_t
+ basic_block::message_ports_in()
+ {
+ pmt::pmt_t port_names = pmt::make_vector(msg_queue.size(), pmt::PMT_NIL);
+ msg_queue_map_itr itr = msg_queue.begin();
+ for(size_t i = 0; i < msg_queue.size(); i++) {
+ pmt::vector_set(port_names, i, (*itr).first);
+ itr++;
+ }
+ return port_names;
+ }
+
+ // - register a new output message port
+ void
+ basic_block::message_port_register_out(pmt::pmt_t port_id)
+ {
+ if(!pmt::is_symbol(port_id)) {
+ throw std::runtime_error("message_port_register_out: bad port id");
+ }
+ if(pmt::dict_has_key(message_subscribers, port_id)) {
+ throw std::runtime_error("message_port_register_out: port already in use");
+ }
+ message_subscribers = pmt::dict_add(message_subscribers, port_id, pmt::PMT_NIL);
+ }
+
+ pmt::pmt_t
+ basic_block::message_ports_out()
+ {
+ size_t len = pmt::length(message_subscribers);
+ pmt::pmt_t port_names = pmt::make_vector(len, pmt::PMT_NIL);
+ pmt::pmt_t keys = pmt::dict_keys(message_subscribers);
+ for(size_t i = 0; i < len; i++) {
+ pmt::vector_set(port_names, i, pmt::nth(i, keys));
+ }
+ return port_names;
+ }
+
+ // - publish a message on a message port
+ void basic_block::message_port_pub(pmt::pmt_t port_id, pmt::pmt_t msg)
+ {
+ if(!pmt::dict_has_key(message_subscribers, port_id)) {
+ throw std::runtime_error("port does not exist");
+ }
+
+ pmt::pmt_t currlist = pmt::dict_ref(message_subscribers, port_id, pmt::PMT_NIL);
+ // iterate through subscribers on port
+ while(pmt::is_pair(currlist)) {
+ pmt::pmt_t target = pmt::car(currlist);
+
+ pmt::pmt_t block = pmt::car(target);
+ pmt::pmt_t port = pmt::cdr(target);
+
+ currlist = pmt::cdr(currlist);
+ basic_block_sptr blk = global_block_registry.block_lookup(block);
+ //blk->post(msg);
+ blk->post(port, msg);
+ }
+ }
+
+ // - subscribe to a message port
+ void
+ basic_block::message_port_sub(pmt::pmt_t port_id, pmt::pmt_t target){
+ if(!pmt::dict_has_key(message_subscribers, port_id)){
+ std::stringstream ss;
+ ss << "Port does not exist: \"" << pmt::write_string(port_id) << "\" on block: "
+ << pmt::write_string(target) << std::endl;
+ throw std::runtime_error(ss.str());
+ }
+ pmt::pmt_t currlist = pmt::dict_ref(message_subscribers,port_id,pmt::PMT_NIL);
+
+ // ignore re-adds of the same target
+ if(!pmt::list_has(currlist, target))
+ message_subscribers = pmt::dict_add(message_subscribers,port_id,pmt::list_add(currlist,target));
+ }
+
+ void
+ basic_block::message_port_unsub(pmt::pmt_t port_id, pmt::pmt_t target)
+ {
+ if(!pmt::dict_has_key(message_subscribers, port_id)) {
+ std::stringstream ss;
+ ss << "Port does not exist: \"" << pmt::write_string(port_id) << "\" on block: "
+ << pmt::write_string(target) << std::endl;
+ throw std::runtime_error(ss.str());
+ }
+
+ // ignore unsubs of unknown targets
+ pmt::pmt_t currlist = pmt::dict_ref(message_subscribers,port_id,pmt::PMT_NIL);
+ message_subscribers = pmt::dict_add(message_subscribers,port_id,pmt::list_rm(currlist,target));
+ }
+
+ void
+ basic_block::_post(pmt::pmt_t which_port, pmt::pmt_t msg)
+ {
+ insert_tail(which_port, msg);
+ }
+
+ void
+ basic_block::insert_tail(pmt::pmt_t which_port, pmt::pmt_t msg)
+ {
+ gr::thread::scoped_lock guard(mutex);
+
+ if((msg_queue.find(which_port) == msg_queue.end()) || (msg_queue_ready.find(which_port) == msg_queue_ready.end())) {
+ std::cout << "target port = " << pmt::symbol_to_string(which_port) << std::endl;
+ throw std::runtime_error("attempted to insert_tail on invalid queue!");
+ }
+
+ msg_queue[which_port].push_back(msg);
+ msg_queue_ready[which_port]->notify_one();
+
+ // wake up thread if BLKD_IN or BLKD_OUT
+ global_block_registry.notify_blk(alias());
+ }
+
+ pmt::pmt_t
+ basic_block::delete_head_nowait(pmt::pmt_t which_port)
+ {
+ gr::thread::scoped_lock guard(mutex);
+
+ if(empty_p(which_port)) {
+ return pmt::pmt_t();
+ }
+
+ pmt::pmt_t m(msg_queue[which_port].front());
+ msg_queue[which_port].pop_front();
+
+ return m;
+ }
+
+ pmt::pmt_t
+ basic_block::delete_head_blocking(pmt::pmt_t which_port)
+ {
+ gr::thread::scoped_lock guard(mutex);
+
+ while(empty_p(which_port)) {
+ msg_queue_ready[which_port]->wait(guard);
+ }
+
+ pmt::pmt_t m(msg_queue[which_port].front());
+ msg_queue[which_port].pop_front();
+ return m;
+ }
+
+} /* namespace gr */
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