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23cb967a8e
This method is marked deprecated in the Boost source (not, however, in the Boost documentation) with no clear substitute. In this particular case (we are using (`dd` to measure disk speed when running Linux in `rx_samples_to_file`) we simply replace `wait_for` with an unconditional `sleep_for`.
679 lines
27 KiB
C++
679 lines
27 KiB
C++
//
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// Copyright 2010-2011,2014 Ettus Research LLC
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// Copyright 2018 Ettus Research, a National Instruments Company
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//
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// SPDX-License-Identifier: GPL-3.0-or-later
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//
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#include <uhd/convert.hpp>
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#include <uhd/exception.hpp>
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#include <uhd/types/tune_request.hpp>
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#include <uhd/usrp/multi_usrp.hpp>
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#include <uhd/utils/safe_main.hpp>
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#include <boost/algorithm/string.hpp>
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#include <boost/filesystem.hpp>
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#include <boost/format.hpp>
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#include <boost/lexical_cast.hpp>
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#include <boost/process.hpp>
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#include <boost/program_options.hpp>
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#include <chrono>
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#include <complex>
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#include <csignal>
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#include <fstream>
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#include <iostream>
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#include <numeric>
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#include <regex>
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#include <thread>
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using namespace std::chrono_literals;
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namespace po = boost::program_options;
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std::mutex recv_mutex;
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static bool stop_signal_called = false;
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static bool overflow_message = true;
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void sig_int_handler(int)
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{
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stop_signal_called = true;
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}
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/*
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* Very simple disk write test using dd for at most 1 second.
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* Measures an upper bound of the maximum
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* sustainable stream to disk rate. Though the rate measured
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* varies depending on the system load at the time.
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*
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* Does not take into account OS cache or disk cache capacities
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* filling up over time to avoid extra complexity.
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*
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* Returns the measured write speed in bytes per second
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*/
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double disk_rate_check(const size_t sample_type_size,
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const size_t channel_count,
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size_t samps_per_buff,
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const std::string& file)
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{
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#ifdef __linux__
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std::string err_msg =
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"Disk benchmark tool 'dd' did not run or returned an unexpected output format";
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boost::process::ipstream pipe_stream;
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boost::filesystem::path temp_file =
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boost::filesystem::path(file).parent_path() / boost::filesystem::unique_path();
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std::string disk_check_proc_str =
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"dd if=/dev/random of=" + temp_file.native()
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+ " bs=" + std::to_string(samps_per_buff * channel_count * sample_type_size)
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+ " count=100";
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try {
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boost::process::child c(
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disk_check_proc_str, boost::process::std_err > pipe_stream);
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std::this_thread::sleep_for(std::chrono::seconds(1));
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if (c.running()) {
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c.terminate();
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}
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} catch (std::system_error& err) {
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std::cerr << err_msg << std::endl;
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if (boost::filesystem::exists(temp_file)) {
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boost::filesystem::remove(temp_file);
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}
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return 0;
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}
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// sig_int_handler will absorb SIGINT by this point, but other signals may
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// leave a temporary file on program exit.
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boost::filesystem::remove(temp_file);
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std::string line;
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std::string dd_output;
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while (pipe_stream && std::getline(pipe_stream, line) && !line.empty()) {
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dd_output += line;
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}
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// Parse dd output this format:
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// 1+0 records in
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// 1+0 records out
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// 80000000 bytes (80 MB, 76 MiB) copied, 0.245538 s, 326 MB/s
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// and capture the measured disk write speed (e.g. 326 MB/s)
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std::smatch dd_matchs;
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std::regex dd_regex(
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R"(\d+\+\d+ records in)"
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R"(\d+\+\d+ records out)"
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R"(\d+ bytes \(\d+(?:\.\d+)? [KMGTP]?B, \d+(?:\.\d+)? [KMGTP]?iB\) copied, \d+(?:\.\d+)? s, (\d+(?:\.\d+)?) ([KMGTP]?B/s))"
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);
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std::regex_match(dd_output, dd_matchs, dd_regex);
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if (dd_matchs[0].str() != dd_output) {
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std::cerr << err_msg << std::endl;
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} else {
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double disk_rate_sigfigs = std::stod(dd_matchs[1]);
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switch (dd_matchs[2].str().at(0)) {
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case 'K':
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return disk_rate_sigfigs * 1e3;
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case 'M':
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return disk_rate_sigfigs * 1e6;
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case 'G':
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return disk_rate_sigfigs * 1e9;
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case 'T':
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return disk_rate_sigfigs * 1e12;
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case 'P':
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return disk_rate_sigfigs * 1e15;
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case 'B':
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return disk_rate_sigfigs;
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default:
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std::cerr << err_msg << std::endl;
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}
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}
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#endif
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return 0;
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}
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template <typename samp_type>
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void recv_to_file(uhd::usrp::multi_usrp::sptr usrp,
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const std::string& cpu_format,
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const std::string& wire_format,
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const std::vector<size_t>& channel_nums,
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const size_t total_num_channels,
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const std::string& file,
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size_t samps_per_buff,
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unsigned long long num_requested_samples,
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double& bw,
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double time_requested = 0.0,
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bool stats = false,
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bool null = false,
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bool enable_size_map = false,
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bool continue_on_bad_packet = false,
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const std::string& thread_prefix = "")
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{
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unsigned long long num_total_samps = 0;
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// create a receive streamer
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uhd::stream_args_t stream_args(cpu_format, wire_format);
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stream_args.channels = channel_nums;
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uhd::rx_streamer::sptr rx_stream = usrp->get_rx_stream(stream_args);
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uhd::rx_metadata_t md;
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// Cannot use std::vector as second dimension type because recv will call
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// reinterpret_cast<char*> on each subarray, which is incompatible with
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// std::vector. Instead create new arrays and manage the memory ourselves
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std::vector<samp_type*> buffs(rx_stream->get_num_channels());
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try {
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for (size_t ch = 0; ch < rx_stream->get_num_channels(); ch++) {
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buffs[ch] = new samp_type[samps_per_buff];
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}
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} catch (std::bad_alloc& exc) {
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UHD_LOGGER_ERROR("UHD")
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<< "Bad memory allocation. "
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"Try a smaller samples per buffer setting or free up additional memory";
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std::exit(EXIT_FAILURE);
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}
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std::vector<std::ofstream> outfiles(rx_stream->get_num_channels());
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std::string filename;
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for (size_t ch = 0; ch < rx_stream->get_num_channels(); ch++) {
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if (not null) {
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if (rx_stream->get_num_channels() == 1) { // single channel
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filename = file;
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} else { // multiple channels
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// check if file extension exists
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if (file.find('.') != std::string::npos) {
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const std::string base_name = file.substr(0, file.find_last_of('.'));
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const std::string extension = file.substr(file.find_last_of('.'));
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filename = base_name + "_" + "ch" + std::to_string(channel_nums[ch])
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+ extension;
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} else {
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// file extension does not exist
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filename = file + "_" + "ch" + std::to_string(channel_nums[ch]);
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}
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}
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outfiles[ch].open(filename.c_str(), std::ofstream::binary);
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}
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}
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// setup streaming
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uhd::stream_cmd_t stream_cmd((num_requested_samples == 0)
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? uhd::stream_cmd_t::STREAM_MODE_START_CONTINUOUS
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: uhd::stream_cmd_t::STREAM_MODE_NUM_SAMPS_AND_DONE);
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stream_cmd.num_samps = size_t(num_requested_samples);
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stream_cmd.stream_now = rx_stream->get_num_channels() == 1;
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stream_cmd.time_spec = usrp->get_time_now() + uhd::time_spec_t(0.05);
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rx_stream->issue_stream_cmd(stream_cmd);
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typedef std::map<size_t, size_t> SizeMap;
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SizeMap mapSizes;
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const auto start_time = std::chrono::steady_clock::now();
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const auto stop_time = start_time + (1s * time_requested);
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// Track time and samps between updating the BW summary
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auto last_update = start_time;
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unsigned long long last_update_samps = 0;
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// Run this loop until either time expired (if a duration was given), until
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// the requested number of samples were collected (if such a number was
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// given), or until Ctrl-C was pressed.
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while (not stop_signal_called
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and (num_requested_samples != num_total_samps or num_requested_samples == 0)
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and (time_requested == 0.0 or std::chrono::steady_clock::now() <= stop_time)) {
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const auto now = std::chrono::steady_clock::now();
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size_t num_rx_samps =
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rx_stream->recv(buffs, samps_per_buff, md, 3.0, enable_size_map);
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if (md.error_code == uhd::rx_metadata_t::ERROR_CODE_TIMEOUT) {
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std::cout << std::endl
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<< thread_prefix << "Timeout while streaming" << std::endl;
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break;
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}
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if (md.error_code == uhd::rx_metadata_t::ERROR_CODE_OVERFLOW) {
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const std::lock_guard<std::mutex> lock(recv_mutex);
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if (overflow_message) {
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overflow_message = false;
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std::cerr
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<< boost::format(
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"Got an overflow indication. Please consider the following:\n"
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" Your write medium must sustain a rate of %0.3fMB/s.\n"
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" Dropped samples will not be written to the file.\n"
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" Please modify this example for your purposes.\n"
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" This message will not appear again.\n")
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% (usrp->get_rx_rate(channel_nums[0]) * total_num_channels
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* sizeof(samp_type) / 1e6);
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}
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continue;
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}
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if (md.error_code != uhd::rx_metadata_t::ERROR_CODE_NONE) {
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const std::lock_guard<std::mutex> lock(recv_mutex);
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std::string error = thread_prefix + "Receiver error: " + md.strerror();
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if (continue_on_bad_packet) {
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std::cerr << error << std::endl;
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continue;
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} else
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throw std::runtime_error(error);
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}
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if (enable_size_map) {
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const std::lock_guard<std::mutex> lock(recv_mutex);
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SizeMap::iterator it = mapSizes.find(num_rx_samps);
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if (it == mapSizes.end())
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mapSizes[num_rx_samps] = 0;
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mapSizes[num_rx_samps] += 1;
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}
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num_total_samps += num_rx_samps;
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for (size_t ch = 0; ch < rx_stream->get_num_channels(); ch++) {
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if (outfiles[ch].is_open()) {
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outfiles[ch].write(
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(const char*)buffs[ch], num_rx_samps * sizeof(samp_type));
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}
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}
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last_update_samps += num_rx_samps;
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const auto time_since_last_update = now - last_update;
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if (time_since_last_update > 1s) {
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const std::lock_guard<std::mutex> lock(recv_mutex);
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const double time_since_last_update_s =
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std::chrono::duration<double>(time_since_last_update).count();
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bw = double(last_update_samps) / time_since_last_update_s;
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last_update_samps = 0;
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last_update = now;
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}
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}
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const auto actual_stop_time = std::chrono::steady_clock::now();
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stream_cmd.stream_mode = uhd::stream_cmd_t::STREAM_MODE_STOP_CONTINUOUS;
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rx_stream->issue_stream_cmd(stream_cmd);
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for (size_t i = 0; i < outfiles.size(); i++) {
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if (outfiles[i].is_open()) {
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outfiles[i].close();
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}
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}
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for (size_t i = 0; i < rx_stream->get_num_channels(); i++) {
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delete[] buffs[i];
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}
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if (stats) {
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const std::lock_guard<std::mutex> lock(recv_mutex);
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std::cout << std::endl;
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const double actual_duration_seconds =
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std::chrono::duration<float>(actual_stop_time - start_time).count();
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std::cout << boost::format("%sReceived %d samples in %f seconds") % thread_prefix
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% num_total_samps % actual_duration_seconds
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<< std::endl;
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if (enable_size_map) {
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std::cout << std::endl;
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std::cout << "Packet size map (bytes: count)" << std::endl;
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for (SizeMap::iterator it = mapSizes.begin(); it != mapSizes.end(); it++)
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std::cout << it->first << ":\t" << it->second << std::endl;
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}
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}
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}
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typedef std::function<uhd::sensor_value_t(const std::string&)> get_sensor_fn_t;
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bool check_locked_sensor(std::vector<std::string> sensor_names,
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const char* sensor_name,
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get_sensor_fn_t get_sensor_fn,
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double setup_time)
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{
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if (std::find(sensor_names.begin(), sensor_names.end(), sensor_name)
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== sensor_names.end())
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return false;
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const auto setup_timeout = std::chrono::steady_clock::now() + (setup_time * 1s);
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bool lock_detected = false;
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std::cout << "Waiting for \"" << sensor_name << "\": ";
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std::cout.flush();
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while (true) {
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if (lock_detected and (std::chrono::steady_clock::now() > setup_timeout)) {
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std::cout << " locked." << std::endl;
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break;
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}
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if (get_sensor_fn(sensor_name).to_bool()) {
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std::cout << "+";
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std::cout.flush();
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lock_detected = true;
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} else {
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if (std::chrono::steady_clock::now() > setup_timeout) {
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std::cout << std::endl;
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throw std::runtime_error(
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str(boost::format(
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"timed out waiting for consecutive locks on sensor \"%s\"")
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% sensor_name));
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}
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std::cout << "_";
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std::cout.flush();
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}
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std::this_thread::sleep_for(100ms);
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}
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std::cout << std::endl;
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return true;
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}
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int UHD_SAFE_MAIN(int argc, char* argv[])
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{
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// variables to be set by po
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std::string args, file, type, ant, subdev, ref, wirefmt, channels;
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size_t total_num_samps, spb;
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double rate, freq, gain, bw, total_time, setup_time, lo_offset;
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std::vector<std::thread> threads;
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std::vector<size_t> channel_list;
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std::vector<std::string> channel_strings;
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// setup the program options
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po::options_description desc("Allowed options");
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// clang-format off
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desc.add_options()
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("help", "help message")
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("args", po::value<std::string>(&args)->default_value(""), "multi uhd device address args")
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("file", po::value<std::string>(&file)->default_value("usrp_samples.dat"), "name of the file to write binary samples to")
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("type", po::value<std::string>(&type)->default_value("short"), "sample type: double, float, or short")
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("nsamps", po::value<size_t>(&total_num_samps)->default_value(0), "total number of samples to receive")
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("duration", po::value<double>(&total_time)->default_value(0), "total number of seconds to receive")
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("spb", po::value<size_t>(&spb)->default_value(10000), "samples per buffer")
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("rate", po::value<double>(&rate)->default_value(1e6), "rate of incoming samples")
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("freq", po::value<double>(&freq)->default_value(0.0), "RF center frequency in Hz")
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("lo-offset", po::value<double>(&lo_offset)->default_value(0.0),
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"Offset for frontend LO in Hz (optional)")
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("gain", po::value<double>(&gain), "gain for the RF chain")
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("ant", po::value<std::string>(&ant), "antenna selection")
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("subdev", po::value<std::string>(&subdev), "subdevice specification")
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("channels,channel", po::value<std::string>(&channels)->default_value("0"), "which channel(s) to use (specify \"0\", \"1\", \"0,1\", etc)")
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("bw", po::value<double>(&bw), "analog frontend filter bandwidth in Hz")
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("ref", po::value<std::string>(&ref), "reference source (internal, external, mimo)")
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("wirefmt", po::value<std::string>(&wirefmt)->default_value("sc16"), "wire format (sc8, sc16 or s16)")
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("setup", po::value<double>(&setup_time)->default_value(1.0), "seconds of setup time")
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("progress", "periodically display short-term bandwidth")
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("stats", "show average bandwidth on exit")
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("sizemap", "track packet size and display breakdown on exit. Use with multi_streamer option if CPU limits stream rate.")
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("null", "run without writing to file")
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("continue", "don't abort on a bad packet")
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("skip-lo", "skip checking LO lock status")
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("int-n", "tune USRP with integer-N tuning")
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("multi_streamer", "Create a separate streamer per channel.")
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;
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// clang-format on
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po::variables_map vm;
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po::store(po::parse_command_line(argc, argv, desc), vm);
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po::notify(vm);
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// print the help message
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if (vm.count("help")) {
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std::cout << "UHD RX samples to file " << desc << std::endl;
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std::cout << std::endl
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<< "This application streams data from a single channel of a USRP "
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"device to a file.\n"
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<< std::endl;
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return ~0;
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}
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bool bw_summary = vm.count("progress") > 0;
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bool stats = vm.count("stats") > 0;
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bool null = vm.count("null") > 0;
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bool enable_size_map = vm.count("sizemap") > 0;
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bool continue_on_bad_packet = vm.count("continue") > 0;
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bool multithread = vm.count("multi_streamer") > 0;
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if (enable_size_map)
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std::cout << "Packet size tracking enabled - will only recv one packet at a time!"
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<< std::endl;
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// create a usrp device
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std::cout << std::endl;
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std::cout << "Creating the usrp device with: " << args << "..." << std::endl;
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uhd::usrp::multi_usrp::sptr usrp = uhd::usrp::multi_usrp::make(args);
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// Parse channel selection string
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boost::split(channel_strings, channels, boost::is_any_of("\"',"));
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for (size_t ch = 0; ch < channel_strings.size(); ch++) {
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try {
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int chan = std::stoi(channel_strings[ch]);
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if (chan >= static_cast<int>(usrp->get_rx_num_channels()) || chan < 0) {
|
|
throw std::runtime_error("Invalid channel(s) specified.");
|
|
} else {
|
|
channel_list.push_back(static_cast<size_t>(chan));
|
|
}
|
|
} catch (std::invalid_argument const& c) {
|
|
throw std::runtime_error("Invalid channel(s) specified.");
|
|
} catch (std::out_of_range const& c) {
|
|
throw std::runtime_error("Invalid channel(s) specified.");
|
|
}
|
|
}
|
|
|
|
// Lock mboard clocks
|
|
if (vm.count("ref")) {
|
|
usrp->set_clock_source(ref);
|
|
}
|
|
|
|
// always select the subdevice first, the channel mapping affects the other settings
|
|
if (vm.count("subdev"))
|
|
usrp->set_rx_subdev_spec(subdev);
|
|
|
|
std::cout << "Using Device: " << usrp->get_pp_string() << std::endl;
|
|
|
|
// set the sample rate
|
|
if (rate <= 0.0) {
|
|
std::cerr << "Please specify a valid sample rate" << std::endl;
|
|
return ~0;
|
|
}
|
|
std::cout << boost::format("Setting RX Rate: %f Msps...") % (rate / 1e6) << std::endl;
|
|
usrp->set_rx_rate(rate, uhd::usrp::multi_usrp::ALL_CHANS);
|
|
std::cout << boost::format("Actual RX Rate: %f Msps...")
|
|
% (usrp->get_rx_rate(channel_list[0]) / 1e6)
|
|
<< std::endl
|
|
<< std::endl;
|
|
|
|
// set the center frequency
|
|
if (vm.count("freq")) { // with default of 0.0 this will always be true
|
|
std::cout << boost::format("Setting RX Freq: %f MHz...") % (freq / 1e6)
|
|
<< std::endl;
|
|
std::cout << boost::format("Setting RX LO Offset: %f MHz...") % (lo_offset / 1e6)
|
|
<< std::endl;
|
|
uhd::tune_request_t tune_request(freq, lo_offset);
|
|
if (vm.count("int-n"))
|
|
tune_request.args = uhd::device_addr_t("mode_n=integer");
|
|
for (size_t chan : channel_list)
|
|
usrp->set_rx_freq(tune_request, chan);
|
|
std::cout << boost::format("Actual RX Freq: %f MHz...")
|
|
% (usrp->get_rx_freq(channel_list[0]) / 1e6)
|
|
<< std::endl
|
|
<< std::endl;
|
|
}
|
|
|
|
// set the rf gain
|
|
if (vm.count("gain")) {
|
|
std::cout << boost::format("Setting RX Gain: %f dB...") % gain << std::endl;
|
|
usrp->set_rx_gain(gain, uhd::usrp::multi_usrp::ALL_CHANS);
|
|
std::cout << boost::format("Actual RX Gain: %f dB...")
|
|
% usrp->get_rx_gain(channel_list[0])
|
|
<< std::endl
|
|
<< std::endl;
|
|
}
|
|
|
|
// set the IF filter bandwidth
|
|
if (vm.count("bw")) {
|
|
std::cout << boost::format("Setting RX Bandwidth: %f MHz...") % (bw / 1e6)
|
|
<< std::endl;
|
|
for (size_t chan : channel_list)
|
|
usrp->set_rx_bandwidth(bw, chan);
|
|
std::cout << boost::format("Actual RX Bandwidth: %f MHz...")
|
|
% (usrp->get_rx_bandwidth(channel_list[0]) / 1e6)
|
|
<< std::endl
|
|
<< std::endl;
|
|
}
|
|
|
|
// set the antenna
|
|
if (vm.count("ant"))
|
|
for (size_t chan : channel_list)
|
|
usrp->set_rx_antenna(ant, chan);
|
|
|
|
std::this_thread::sleep_for(1s * setup_time);
|
|
|
|
// check Ref and LO Lock detect
|
|
if (not vm.count("skip-lo")) {
|
|
for (size_t channel : channel_list) {
|
|
std::cout << "Locking LO on channel " << channel << std::endl;
|
|
check_locked_sensor(
|
|
usrp->get_rx_sensor_names(channel),
|
|
"lo_locked",
|
|
[usrp, channel](const std::string& sensor_name) {
|
|
return usrp->get_rx_sensor(sensor_name, channel);
|
|
},
|
|
setup_time);
|
|
}
|
|
if (ref == "mimo") {
|
|
check_locked_sensor(
|
|
usrp->get_mboard_sensor_names(0),
|
|
"mimo_locked",
|
|
[usrp](const std::string& sensor_name) {
|
|
return usrp->get_mboard_sensor(sensor_name);
|
|
},
|
|
setup_time);
|
|
}
|
|
if (ref == "external") {
|
|
check_locked_sensor(
|
|
usrp->get_mboard_sensor_names(0),
|
|
"ref_locked",
|
|
[usrp](const std::string& sensor_name) {
|
|
return usrp->get_mboard_sensor(sensor_name);
|
|
},
|
|
setup_time);
|
|
}
|
|
}
|
|
|
|
if (total_num_samps == 0) {
|
|
std::signal(SIGINT, &sig_int_handler);
|
|
std::cout << "Press Ctrl + C to stop streaming..." << std::endl;
|
|
}
|
|
|
|
const double req_disk_rate = usrp->get_rx_rate(channel_list[0]) * channel_list.size()
|
|
* uhd::convert::get_bytes_per_item(wirefmt);
|
|
const double disk_rate_meas = disk_rate_check(
|
|
uhd::convert::get_bytes_per_item(wirefmt), channel_list.size(), spb, file);
|
|
if (disk_rate_meas > 0 && req_disk_rate >= disk_rate_meas) {
|
|
std::cerr
|
|
<< boost::format(
|
|
" Disk write test indicates that an overflow is likely to occur.\n"
|
|
" Your write medium must sustain a rate of %0.3fMB/s,\n"
|
|
" but write test returned write speed of %0.3fMB/s.\n"
|
|
" The disk write rate is also affected by system load\n"
|
|
" and OS/disk caching capacity.\n")
|
|
% (req_disk_rate / 1e6) % (disk_rate_meas / 1e6);
|
|
}
|
|
|
|
std::vector<size_t> chans_in_thread;
|
|
std::vector<double> rates(channel_list.size());
|
|
|
|
#define recv_to_file_args(format) \
|
|
(usrp, \
|
|
format, \
|
|
wirefmt, \
|
|
chans_in_thread, \
|
|
channel_list.size(), \
|
|
multithread ? "ch" + std::to_string(chans_in_thread[0]) + "_" + file : file, \
|
|
spb, \
|
|
total_num_samps, \
|
|
rates[i], \
|
|
total_time, \
|
|
stats, \
|
|
null, \
|
|
enable_size_map, \
|
|
continue_on_bad_packet, \
|
|
th_prefix)
|
|
|
|
for (size_t i = 0; i < channel_list.size(); i++) {
|
|
std::string th_prefix = "";
|
|
if (multithread) {
|
|
chans_in_thread.clear();
|
|
chans_in_thread.push_back(channel_list[i]);
|
|
th_prefix = "Thread " + std::to_string(i) + ":\n";
|
|
} else {
|
|
chans_in_thread = channel_list;
|
|
}
|
|
threads.push_back(std::thread([=, &rates]() {
|
|
// recv to file
|
|
if (wirefmt == "s16") {
|
|
if (type == "double")
|
|
recv_to_file<double> recv_to_file_args("f64");
|
|
else if (type == "float")
|
|
recv_to_file<float> recv_to_file_args("f32");
|
|
else if (type == "short")
|
|
recv_to_file<short> recv_to_file_args("s16");
|
|
else
|
|
throw std::runtime_error("Unknown type " + type);
|
|
} else {
|
|
if (type == "double")
|
|
recv_to_file<std::complex<double>> recv_to_file_args("fc64");
|
|
else if (type == "float")
|
|
recv_to_file<std::complex<float>> recv_to_file_args("fc32");
|
|
else if (type == "short")
|
|
recv_to_file<std::complex<short>> recv_to_file_args("sc16");
|
|
else
|
|
throw std::runtime_error("Unknown type " + type);
|
|
}
|
|
}));
|
|
if (!multithread) {
|
|
break;
|
|
}
|
|
}
|
|
|
|
|
|
if (total_time == 0) {
|
|
if (total_num_samps > 0) {
|
|
total_time = std::ceil(total_num_samps / usrp->get_rx_rate());
|
|
}
|
|
}
|
|
|
|
// Wait a bit extra for the first updates from each thread
|
|
std::this_thread::sleep_for(500ms);
|
|
|
|
const auto end_time = std::chrono::steady_clock::now() + (total_time - 1) * 1s;
|
|
|
|
while (threads.size() > 0
|
|
&& (std::chrono::steady_clock::now() < end_time || total_time == 0)
|
|
&& !stop_signal_called) {
|
|
std::this_thread::sleep_for(1s);
|
|
|
|
// Remove any threads that are finished
|
|
for (size_t i = 0; i < threads.size(); i++) {
|
|
if (!threads[i].joinable()) {
|
|
// Thread is not joinable, i.e. it has finished and 'joined' already
|
|
// Remove the thread from the list.
|
|
threads.erase(threads.begin() + i);
|
|
// Clear last bandwidth value after thread is finished
|
|
rates[i] = 0;
|
|
}
|
|
}
|
|
// Report the bandwidth of remaining threads
|
|
if (bw_summary && threads.size() > 0) {
|
|
const std::lock_guard<std::mutex> lock(recv_mutex);
|
|
std::cout << "\t"
|
|
<< (std::accumulate(std::begin(rates), std::end(rates), 0) / 1e6
|
|
/ threads.size())
|
|
<< " Msps" << std::endl;
|
|
}
|
|
}
|
|
|
|
// join any remaining threads
|
|
for (size_t i = 0; i < threads.size(); i++) {
|
|
if (threads[i].joinable()) {
|
|
threads[i].join();
|
|
}
|
|
}
|
|
|
|
// finished
|
|
std::cout << std::endl << "Done!" << std::endl << std::endl;
|
|
|
|
return EXIT_SUCCESS;
|
|
}
|