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/* -*- c++ -*- */
/*
* Copyright 2008,2009,2013 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 this program; if not, write to the Free Software Foundation, Inc.,
* 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
*/
#ifdef HAVE_CONFIG_H
#include <config.h>
#endif
#include <gnuradio/tpb_detail.h>
#include <gnuradio/block.h>
#include <gnuradio/block_detail.h>
#include <gnuradio/buffer.h>
namespace gr {
/*
* We assume that no worker threads are ever running when the graph
* structure is being manipulated, thus it's safe for us to poke
* around in our neighbors w/o holding any locks.
*/
void
tpb_detail::notify_upstream(block_detail *d)
{
// For each of our inputs, tell the guy upstream that we've
// consumed some input, and that he most likely has more output
// buffer space available.
for(size_t i = 0; i < d->d_input.size(); i++) {
// Can you say, "pointer chasing?"
d->d_input[i]->buffer()->link()->detail()->d_tpb.set_output_changed();
}
}
void
tpb_detail::notify_downstream(block_detail *d)
{
// For each of our outputs, tell the guys downstream that they
// have new input available.
for(size_t i = 0; i < d->d_output.size(); i++) {
buffer_sptr buf = d->d_output[i];
for(size_t j = 0, k = buf->nreaders(); j < k; j++)
buf->reader(j)->link()->detail()->d_tpb.set_input_changed();
}
}
void
tpb_detail::notify_neighbors(block_detail *d)
{
notify_downstream(d);
notify_upstream(d);
}
} /* namespace gr */
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