ceph/src/boost/libs/fiber/examples/numa/topology.cpp

   1
   2 //          Copyright Oliver Kowalke 2017.
   3 // Distributed under the Boost Software License, Version 1.0.
   4 //    (See accompanying file LICENSE_1_0.txt or copy at
   5 //          http://www.boost.org/LICENSE_1_0.txt)
   6
   7 #include <cstdlib>
   8 #include <cstring>
   9 #include <exception>
  10 #include <iostream>
  11 #include <vector>
  12
  13 #include <boost/assert.hpp>
  14 #include <boost/fiber/numa/topology.hpp>
  15
  16 int main( int argc, char * argv[]) {
  17     try {
  18         std::vector< boost::fibers::numa::node > topo = boost::fibers::numa::topology();
  19         for ( auto n : topo) {
  20             std::cout << "node: " << n.id << " | ";
  21             std::cout << "cpus: ";
  22             for ( auto cpu_id : n.logical_cpus) {
  23                 std::cout << cpu_id << " ";
  24             }
  25             std::cout << "| distance: ";
  26             for ( auto d : n.distance) {
  27                 std::cout << d << " ";
  28             }
  29             std::cout << std::endl;
  30         }
  31         std::cout << "done" << std::endl;
  32         return EXIT_SUCCESS;
  33     } catch ( std::exception const& ex) {
  34         std::cerr << "exception: " << ex.what() << std::endl;
  35     }
  36     return EXIT_FAILURE;
  37 }