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/* -*- c++ -*- */
/*
* Copyright 2005,2013 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 "probe_rate_impl.h"
#include <gnuradio/io_signature.h>
namespace gr {
namespace blocks {
probe_rate::sptr
probe_rate::make(size_t itemsize, double update_rate_ms, double alpha)
{
return gnuradio::get_initial_sptr
(new probe_rate_impl(itemsize,update_rate_ms,alpha));
}
probe_rate_impl::probe_rate_impl(size_t itemsize, double update_rate_ms, double alpha) :
sync_block("probe_rate",
io_signature::make(1,1,itemsize),
io_signature::make(0,0,itemsize)),
d_alpha(alpha),
d_beta(1.0-alpha),
d_avg(0),
d_min_update_time(update_rate_ms),
d_lastthru(0)
{
message_port_register_out(pmt::mp("rate"));
}
probe_rate_impl::~probe_rate_impl(){}
int probe_rate_impl::work(int noutput_items,
gr_vector_const_void_star &input_items,
gr_vector_void_star &output_items){
d_lastthru += noutput_items;
boost::posix_time::ptime now(boost::posix_time::microsec_clock::local_time());
boost::posix_time::time_duration diff = now - d_last_update;
double diff_ms = diff.total_milliseconds();
if(diff_ms >= d_min_update_time){
double rate_this_update = d_lastthru *1e3 / diff_ms;
d_lastthru = 0;
d_last_update = now;
if(d_avg == 0){
d_avg = rate_this_update;
} else {
d_avg = rate_this_update*d_alpha + d_avg*d_beta;
}
pmt::pmt_t d = pmt::make_dict();
d = pmt::dict_add(d, pmt::mp("rate_avg"), pmt::mp(d_avg));
d = pmt::dict_add(d, pmt::mp("rate_now"), pmt::mp(rate_this_update));
message_port_pub(pmt::mp("rate"), pmt::cons(d, pmt::PMT_NIL));
}
return noutput_items;
}
void probe_rate_impl::setup_rpc(){
#ifdef GR_CTRLPORT
add_rpc_variable(
rpcbasic_sptr(new rpcbasic_register_get<probe_rate_impl, double >(
alias(), "rate_items",
&probe_rate_impl::rate,
pmt::mp(0), pmt::mp(1e6), pmt::mp(1),
"items/sec", "Item rate",
RPC_PRIVLVL_MIN, DISPTIME | DISPOPTSTRIP)));
add_rpc_variable(
rpcbasic_sptr(new rpcbasic_register_get<probe_rate_impl, double >(
alias(), "timesincelast",
&probe_rate_impl::timesincelast,
pmt::mp(0), pmt::mp(d_min_update_time*2), pmt::mp(0),
"ms", "Time since last update",
RPC_PRIVLVL_MIN, DISPTIME | DISPOPTSTRIP)));
#endif
}
void probe_rate_impl::set_alpha(double alpha){ d_alpha = alpha; }
double probe_rate_impl::rate(){ return d_avg; }
double probe_rate_impl::timesincelast(){
boost::posix_time::ptime now(boost::posix_time::microsec_clock::local_time());
boost::posix_time::time_duration diff = now - d_last_update;
return diff.total_milliseconds();
}
bool probe_rate_impl::start(){
d_avg = 0;
d_lastthru = 0;
d_last_update = boost::posix_time::microsec_clock::local_time();
return true;
}
bool probe_rate_impl::stop(){
return true;
}
} /* namespace blocks */
} /* namespace gr */
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