diff options
| author | Tom Rondeau <trondeau@vt.edu> | 2013-04-17 13:43:52 -0400 |
|---|---|---|
| committer | Tom Rondeau <trondeau@vt.edu> | 2013-04-29 14:52:56 -0400 |
| commit | f3e2e07201c50033bf6c9d0c6a6f068557b4f17f (patch) | |
| tree | 140b3c2d20a951ffd4abd564c3378ee2e2f9fc7c /gnuradio-runtime/lib/msg_queue.cc | |
| parent | 35303ae975a5b1bdecc2492bc96e2b8e89b62a3d (diff) | |
runtime: converting runtime core to gr namespace, gnuradio include dir.
Diffstat (limited to 'gnuradio-runtime/lib/msg_queue.cc')
| -rw-r--r-- | gnuradio-runtime/lib/msg_queue.cc | 130 |
1 files changed, 130 insertions, 0 deletions
diff --git a/gnuradio-runtime/lib/msg_queue.cc b/gnuradio-runtime/lib/msg_queue.cc new file mode 100644 index 0000000000..9961f76296 --- /dev/null +++ b/gnuradio-runtime/lib/msg_queue.cc @@ -0,0 +1,130 @@ +/* -*- c++ -*- */ +/* + * Copyright 2005,2009,2013 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/msg_queue.h> +#include <stdexcept> + +namespace gr { + + msg_queue::sptr + msg_queue::make(unsigned int limit) + { + return msg_queue::sptr(new msg_queue(limit)); + } + + msg_queue::msg_queue(unsigned int limit) + : d_not_empty(), d_not_full(), + /*d_head(0), d_tail(0),*/ d_count(0), d_limit(limit) + { + } + + msg_queue::~msg_queue() + { + flush (); + } + + void + msg_queue::insert_tail(message::sptr msg) + { + if(msg->d_next) + throw std::invalid_argument("gr::msg_queue::insert_tail: msg already in queue"); + + gr::thread::scoped_lock guard(d_mutex); + + while(full_p()) + d_not_full.wait(guard); + + if(d_tail == 0) { + d_tail = d_head = msg; + //msg->d_next = 0; + msg->d_next.reset(); + } + else { + d_tail->d_next = msg; + d_tail = msg; + //msg->d_next = 0; + msg->d_next.reset(); + } + d_count++; + d_not_empty.notify_one(); + } + + message::sptr + msg_queue::delete_head() + { + gr::thread::scoped_lock guard(d_mutex); + message::sptr m; + + while((m = d_head) == 0) + d_not_empty.wait(guard); + + d_head = m->d_next; + if(d_head == 0){ + //d_tail = 0; + d_tail.reset(); + } + + d_count--; + // m->d_next = 0; + m->d_next.reset(); + d_not_full.notify_one(); + return m; + } + + message::sptr + msg_queue::delete_head_nowait() + { + gr::thread::scoped_lock guard(d_mutex); + message::sptr m; + + if((m = d_head) == 0) { + //return 0; + return message::sptr(); + } + + d_head = m->d_next; + if(d_head == 0) { + //d_tail = 0; + d_tail.reset(); + } + + d_count--; + //m->d_next = 0; + m->d_next.reset(); + d_not_full.notify_one(); + return m; + } + + void + msg_queue::flush() + { + message::sptr m; + + while((m = delete_head_nowait ()) != 0) + ; + } + +} /* namespace gr */ |