diff options
Diffstat (limited to '3rdparty/asio/src/tests/latency/udp_client.cpp')
-rw-r--r-- | 3rdparty/asio/src/tests/latency/udp_client.cpp | 104 |
1 files changed, 104 insertions, 0 deletions
diff --git a/3rdparty/asio/src/tests/latency/udp_client.cpp b/3rdparty/asio/src/tests/latency/udp_client.cpp new file mode 100644 index 00000000000..cc2762971d0 --- /dev/null +++ b/3rdparty/asio/src/tests/latency/udp_client.cpp @@ -0,0 +1,104 @@ +// +// udp_client.cpp +// ~~~~~~~~~~~~~~ +// +// Copyright (c) 2003-2016 Christopher M. Kohlhoff (chris at kohlhoff dot com) +// +// Distributed under the Boost Software License, Version 1.0. (See accompanying +// file LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt) +// + +#include <asio/ip/udp.hpp> +#include <boost/date_time/posix_time/posix_time_types.hpp> +#include <algorithm> +#include <cstdio> +#include <cstdlib> +#include <cstring> +#include <vector> +#include "high_res_clock.hpp" + +using asio::ip::udp; +using boost::posix_time::ptime; +using boost::posix_time::microsec_clock; + +const int num_samples = 100000; + +int main(int argc, char* argv[]) +{ + if (argc != 6) + { + std::fprintf(stderr, + "Usage: udp_client <ip> <port1> " + "<nports> <bufsize> {spin|block}\n"); + return 1; + } + + const char* ip = argv[1]; + unsigned short first_port = static_cast<unsigned short>(std::atoi(argv[2])); + unsigned short num_ports = static_cast<unsigned short>(std::atoi(argv[3])); + std::size_t buf_size = static_cast<std::size_t>(std::atoi(argv[4])); + bool spin = (std::strcmp(argv[5], "spin") == 0); + + asio::io_context io_context; + + udp::socket socket(io_context, udp::endpoint(udp::v4(), 0)); + + if (spin) + { + socket.non_blocking(true); + } + + udp::endpoint target(asio::ip::make_address(ip), first_port); + unsigned short last_port = first_port + num_ports - 1; + std::vector<unsigned char> write_buf(buf_size); + std::vector<unsigned char> read_buf(buf_size); + + ptime start = microsec_clock::universal_time(); + boost::uint64_t start_hr = high_res_clock(); + + boost::uint64_t samples[num_samples]; + for (int i = 0; i < num_samples; ++i) + { + boost::uint64_t t = high_res_clock(); + + asio::error_code ec; + socket.send_to(asio::buffer(write_buf), target, 0, ec); + + do socket.receive(asio::buffer(read_buf), 0, ec); + while (ec == asio::error::would_block); + + samples[i] = high_res_clock() - t; + + if (target.port() == last_port) + target.port(first_port); + else + target.port(target.port() + 1); + } + + ptime stop = microsec_clock::universal_time(); + boost::uint64_t stop_hr = high_res_clock(); + boost::uint64_t elapsed_usec = (stop - start).total_microseconds(); + boost::uint64_t elapsed_hr = stop_hr - start_hr; + double scale = 1.0 * elapsed_usec / elapsed_hr; + + std::sort(samples, samples + num_samples); + std::printf(" 0.0%%\t%f\n", samples[0] * scale); + std::printf(" 0.1%%\t%f\n", samples[num_samples / 1000 - 1] * scale); + std::printf(" 1.0%%\t%f\n", samples[num_samples / 100 - 1] * scale); + std::printf(" 10.0%%\t%f\n", samples[num_samples / 10 - 1] * scale); + std::printf(" 20.0%%\t%f\n", samples[num_samples * 2 / 10 - 1] * scale); + std::printf(" 30.0%%\t%f\n", samples[num_samples * 3 / 10 - 1] * scale); + std::printf(" 40.0%%\t%f\n", samples[num_samples * 4 / 10 - 1] * scale); + std::printf(" 50.0%%\t%f\n", samples[num_samples * 5 / 10 - 1] * scale); + std::printf(" 60.0%%\t%f\n", samples[num_samples * 6 / 10 - 1] * scale); + std::printf(" 70.0%%\t%f\n", samples[num_samples * 7 / 10 - 1] * scale); + std::printf(" 80.0%%\t%f\n", samples[num_samples * 8 / 10 - 1] * scale); + std::printf(" 90.0%%\t%f\n", samples[num_samples * 9 / 10 - 1] * scale); + std::printf(" 99.0%%\t%f\n", samples[num_samples * 99 / 100 - 1] * scale); + std::printf(" 99.9%%\t%f\n", samples[num_samples * 999 / 1000 - 1] * scale); + std::printf("100.0%%\t%f\n", samples[num_samples - 1] * scale); + + double total = 0.0; + for (int i = 0; i < num_samples; ++i) total += samples[i] * scale; + std::printf(" mean\t%f\n", total / num_samples); +} |