diff options
| author | Camilo Solano <solano@ti.rwth-aachen.de> | 2014-05-06 19:45:05 +0200 |
|---|---|---|
| committer | Camilo Solano <solano@ti.rwth-aachen.de> | 2014-05-06 19:52:03 +0200 |
| commit | 35aaec4d0d4b6f995911fd6d38697bc239cd68cf (patch) | |
| tree | 0679d75ea8eabacaf6150039ce8840bd1d4735d4 /gr-zeromq/lib/req_source_impl.cc | |
| parent | edd1405c7f2bcd79e8fb5aa72189e13a37c1ed02 (diff) | |
zeromq: renamed source_reqrep to req_source
Diffstat (limited to 'gr-zeromq/lib/req_source_impl.cc')
| -rw-r--r-- | gr-zeromq/lib/req_source_impl.cc | 94 |
1 files changed, 94 insertions, 0 deletions
diff --git a/gr-zeromq/lib/req_source_impl.cc b/gr-zeromq/lib/req_source_impl.cc new file mode 100644 index 0000000000..ffe31f9953 --- /dev/null +++ b/gr-zeromq/lib/req_source_impl.cc @@ -0,0 +1,94 @@ +/* -*- c++ -*- */ +/* + * Copyright 2013 Free Software Foundation, Inc. + * + * This file is part of GNU Radio. + * + * This 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. + * + * This software 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 software; 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/io_signature.h> +#include "req_source_impl.h" + +namespace gr { + namespace zeromq { + + req_source::sptr + req_source::make(size_t itemsize, size_t vlen, char *address) + { + return gnuradio::get_initial_sptr + (new req_source_impl(itemsize, vlen, address)); + } + + req_source_impl::req_source_impl(size_t itemsize, size_t vlen, char *address) + : gr::sync_block("req_source", + gr::io_signature::make(0, 0, 0), + gr::io_signature::make(1, 1, itemsize * vlen)), + d_itemsize(itemsize) + { + d_context = new zmq::context_t(1); + d_socket = new zmq::socket_t(*d_context, ZMQ_REQ); + d_socket->connect (address); + } + + req_source_impl::~req_source_impl() + { + delete d_socket; + delete d_context; + } + + int + req_source_impl::work(int noutput_items, + gr_vector_const_void_star &input_items, + gr_vector_void_star &output_items) + { + char *out = (char*)output_items[0]; + + zmq::pollitem_t itemsout[] = { { *d_socket, 0, ZMQ_POLLOUT, 0 } }; + zmq::poll (&itemsout[0], 1, 0); + + // If we got a reply, process + if (itemsout[0].revents & ZMQ_POLLOUT) { + // Request data, FIXME non portable + zmq::message_t request(sizeof(int)); + memcpy ((void *) request.data (), &noutput_items, sizeof(int)); + d_socket->send(request); + } + + zmq::pollitem_t itemsin[] = { { *d_socket, 0, ZMQ_POLLIN, 0 } }; + zmq::poll (&itemsin[0], 1, 0); + + // If we got a reply, process + if (itemsin[0].revents & ZMQ_POLLIN) { + // Receive data + zmq::message_t reply; + d_socket->recv(&reply); + + // Copy to ouput buffer and return + memcpy(out, (void *)reply.data(), reply.size()); + + return reply.size()/d_itemsize; + } + + return 0; + } + + } /* namespace zeromq */ +} /* namespace gr */ |