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//
// Copyright 2011 Ettus Research LLC
//
// This program 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 of the License, or
// (at your option) any later version.
//
// This program 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, see <http://www.gnu.org/licenses/>.
//
#include <uhd/utils/thread_priority.hpp>
#include <uhd/utils/safe_main.hpp>
#include <uhd/usrp/multi_usrp.hpp>
#include <boost/program_options.hpp>
#include <boost/format.hpp>
#include <boost/thread/thread.hpp>
#include <boost/math/special_functions/round.hpp>
#include <iostream>
#include <complex>
namespace po = boost::program_options;
/***********************************************************************
* Test result variables
**********************************************************************/
unsigned long long num_overflows = 0;
unsigned long long num_underflows = 0;
unsigned long long num_rx_samps = 0;
unsigned long long num_tx_samps = 0;
unsigned long long num_dropped_samps = 0;
unsigned long long num_seq_errors = 0;
/***********************************************************************
* Benchmark RX Rate
**********************************************************************/
void benchmark_rx_rate(uhd::usrp::multi_usrp::sptr usrp){
uhd::set_thread_priority_safe();
//create a receive streamer
uhd::stream_args_t stream_args("fc32"); //complex floats
uhd::rx_streamer::sptr rx_stream = usrp->get_rx_stream(stream_args);
//print pre-test summary
std::cout << boost::format(
"Testing receive rate %f Msps"
) % (usrp->get_rx_rate()/1e6) << std::endl;
//setup variables and allocate buffer
uhd::rx_metadata_t md;
const size_t max_samps_per_packet = rx_stream->get_max_num_samps();
std::vector<std::complex<float> > buff(max_samps_per_packet);
bool had_an_overflow = false;
uhd::time_spec_t last_time;
const double rate = usrp->get_rx_rate();
usrp->issue_stream_cmd(uhd::stream_cmd_t::STREAM_MODE_START_CONTINUOUS);
while (not boost::this_thread::interruption_requested()){
num_rx_samps += rx_stream->recv(
&buff.front(), buff.size(), md
);
//handle the error codes
switch(md.error_code){
case uhd::rx_metadata_t::ERROR_CODE_NONE:
if (had_an_overflow){
had_an_overflow = false;
num_dropped_samps += boost::math::iround((md.time_spec - last_time).get_real_secs()*rate);
}
break;
case uhd::rx_metadata_t::ERROR_CODE_OVERFLOW:
had_an_overflow = true;
last_time = md.time_spec;
num_overflows++;
break;
default:
std::cerr << "Error code: " << md.error_code << std::endl;
std::cerr << "Unexpected error on recv, continuing..." << std::endl;
break;
}
}
usrp->issue_stream_cmd(uhd::stream_cmd_t::STREAM_MODE_STOP_CONTINUOUS);
}
/***********************************************************************
* Benchmark TX Rate
**********************************************************************/
void benchmark_tx_rate(uhd::usrp::multi_usrp::sptr usrp){
uhd::set_thread_priority_safe();
//create a transmit streamer
uhd::stream_args_t stream_args("fc32"); //complex floats
uhd::tx_streamer::sptr tx_stream = usrp->get_tx_stream(stream_args);
//print pre-test summary
std::cout << boost::format(
"Testing transmit rate %f Msps"
) % (usrp->get_tx_rate()/1e6) << std::endl;
//setup variables and allocate buffer
uhd::tx_metadata_t md;
md.has_time_spec = false;
const size_t max_samps_per_packet = tx_stream->get_max_num_samps();
std::vector<std::complex<float> > buff(max_samps_per_packet);
while (not boost::this_thread::interruption_requested()){
num_tx_samps += tx_stream->send(&buff.front(), buff.size(), md);
}
//send a mini EOB packet
md.end_of_burst = true;
tx_stream->send("", 0, md);
}
void benchmark_tx_rate_async_helper(uhd::usrp::multi_usrp::sptr usrp){
//setup variables and allocate buffer
uhd::async_metadata_t async_md;
while (not boost::this_thread::interruption_requested()){
if (not usrp->get_device()->recv_async_msg(async_md)) continue;
//handle the error codes
switch(async_md.event_code){
case uhd::async_metadata_t::EVENT_CODE_BURST_ACK:
return;
case uhd::async_metadata_t::EVENT_CODE_UNDERFLOW:
case uhd::async_metadata_t::EVENT_CODE_UNDERFLOW_IN_PACKET:
num_underflows++;
break;
case uhd::async_metadata_t::EVENT_CODE_SEQ_ERROR:
case uhd::async_metadata_t::EVENT_CODE_SEQ_ERROR_IN_BURST:
num_seq_errors++;
break;
default:
std::cerr << "Event code: " << async_md.event_code << std::endl;
std::cerr << "Unexpected event on async recv, continuing..." << std::endl;
break;
}
}
}
/***********************************************************************
* Main code + dispatcher
**********************************************************************/
int UHD_SAFE_MAIN(int argc, char *argv[]){
uhd::set_thread_priority_safe();
//variables to be set by po
std::string args;
double duration;
double rx_rate, tx_rate;
//setup the program options
po::options_description desc("Allowed options");
desc.add_options()
("help", "help message")
("args", po::value<std::string>(&args)->default_value(""), "single uhd device address args")
("duration", po::value<double>(&duration)->default_value(10.0), "duration for the test in seconds")
("rx_rate", po::value<double>(&rx_rate), "specify to perform a RX rate test (sps)")
("tx_rate", po::value<double>(&tx_rate), "specify to perform a TX rate test (sps)")
;
po::variables_map vm;
po::store(po::parse_command_line(argc, argv, desc), vm);
po::notify(vm);
//print the help message
if (vm.count("help") or (vm.count("rx_rate") + vm.count("tx_rate")) == 0){
std::cout << boost::format("UHD Benchmark Rate %s") % desc << std::endl;
std::cout <<
" Specify --rx_rate for a receive-only test.\n"
" Specify --tx_rate for a transmit-only test.\n"
" Specify both options for a full-duplex test.\n"
<< std::endl;
return ~0;
}
//create a usrp device
std::cout << std::endl;
uhd::device_addrs_t device_addrs = uhd::device::find(args);
if (not device_addrs.empty() and device_addrs.at(0).get("type", "") == "usrp1"){
std::cerr << "*** Warning! ***" << std::endl;
std::cerr << "Benchmark results will be inaccurate on USRP1 due to insufficient features.\n" << std::endl;
}
std::cout << boost::format("Creating the usrp device with: %s...") % args << std::endl;
uhd::usrp::multi_usrp::sptr usrp = uhd::usrp::multi_usrp::make(args);
std::cout << boost::format("Using Device: %s") % usrp->get_pp_string() << std::endl;
boost::thread_group thread_group;
//spawn the receive test thread
if (vm.count("rx_rate")){
usrp->set_rx_rate(rx_rate);
thread_group.create_thread(boost::bind(&benchmark_rx_rate, usrp));
}
//spawn the transmit test thread
if (vm.count("tx_rate")){
usrp->set_tx_rate(tx_rate);
thread_group.create_thread(boost::bind(&benchmark_tx_rate, usrp));
thread_group.create_thread(boost::bind(&benchmark_tx_rate_async_helper, usrp));
}
//sleep for the required duration
const long secs = long(duration);
const long usecs = long((duration - secs)*1e6);
boost::this_thread::sleep(boost::posix_time::seconds(secs) + boost::posix_time::microseconds(usecs));
//interrupt and join the threads
thread_group.interrupt_all();
thread_group.join_all();
//print summary
std::cout << std::endl << boost::format(
"Benchmark rate summary:\n"
" Num received samples: %u\n"
" Num dropped samples: %u\n"
" Num overflows detected: %u\n"
" Num transmitted samples: %u\n"
" Num sequence errors: %u\n"
" Num underflows detected: %u\n"
) % num_rx_samps % num_dropped_samps % num_overflows % num_tx_samps % num_seq_errors % num_underflows << std::endl;
//finished
std::cout << std::endl << "Done!" << std::endl << std::endl;
return 0;
}
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