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/* -*- c++ -*- */
/*
* Copyright 2013,2014,2019 Free Software Foundation, Inc.
*
* This file is part of GNU Radio.
*
* SPDX-License-Identifier: GPL-3.0-or-later
*
*/
#ifdef HAVE_CONFIG_H
#include "config.h"
#endif
#include "rep_sink_impl.h"
#include "tag_headers.h"
#include <gnuradio/io_signature.h>
namespace gr {
namespace zeromq {
rep_sink::sptr rep_sink::make(
size_t itemsize, size_t vlen, char* address, int timeout, bool pass_tags, int hwm)
{
return gnuradio::get_initial_sptr(
new rep_sink_impl(itemsize, vlen, address, timeout, pass_tags, hwm));
}
rep_sink_impl::rep_sink_impl(
size_t itemsize, size_t vlen, char* address, int timeout, bool pass_tags, int hwm)
: gr::sync_block("rep_sink",
gr::io_signature::make(1, 1, itemsize * vlen),
gr::io_signature::make(0, 0, 0)),
base_sink_impl(ZMQ_REP, itemsize, vlen, address, timeout, pass_tags, hwm)
{
/* All is delegated */
}
int rep_sink_impl::work(int noutput_items,
gr_vector_const_void_star& input_items,
gr_vector_void_star& output_items)
{
const uint8_t* in = (const uint8_t*)input_items[0];
bool first = true;
int done = 0;
/* Process as much as we can */
while (1) {
/* Wait for a small time (FIXME: scheduler can't wait for us) */
/* We only wait if its the first iteration, for the others we'll
* let the scheduler retry */
zmq::pollitem_t items[] = { { static_cast<void*>(*d_socket), 0, ZMQ_POLLIN, 0 } };
zmq::poll(&items[0], 1, first ? d_timeout : 0);
/* If we don't have anything, we're done */
if (!(items[0].revents & ZMQ_POLLIN))
break;
/* Get and parse the request */
zmq::message_t request;
#if USE_NEW_CPPZMQ_SEND_RECV
d_socket->recv(request);
#else
d_socket->recv(&request);
#endif
int nitems_send = noutput_items - done;
if (request.size() >= sizeof(uint32_t)) {
int req = (int)*(static_cast<uint32_t*>(request.data()));
nitems_send = std::min(nitems_send, req);
}
/* Delegate the actual send */
done += send_message(in + (done * d_vsize), nitems_send, nitems_read(0) + done);
/* Not the first anymore */
first = false;
}
return done;
}
} /* namespace zeromq */
} /* namespace gr */
// vim: ts=2 sw=2 expandtab
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