ceph/src/boost/libs/pool/test/test_threading.cpp

   1 /* Copyright (C) 2011 John Maddock
   2 *
   3 * Use, modification and distribution is subject to the
   4 * Boost Software License, Version 1.0. (See accompanying
   5 * file LICENSE_1_0.txt or http://www.boost.org/LICENSE_1_0.txt)
   6 */
   7
   8 #include <iostream>
   9 #include <boost/pool/pool_alloc.hpp>
  10 #include <boost/thread.hpp>
  11 #if defined(BOOST_MSVC) && (BOOST_MSVC == 1400)
  12 #pragma warning(push)
  13 #pragma warning(disable:4244)
  14 #endif
  15 #include <boost/random/mersenne_twister.hpp>
  16 #include <boost/random/uniform_int_distribution.hpp>
  17 #if defined(BOOST_MSVC) && (BOOST_MSVC == 1400)
  18 #pragma warning(pop)
  19 #endif
  20
  21 void run_tests()
  22 {
  23    boost::random::mt19937 gen;
  24    boost::random::uniform_int_distribution<> dist(-10, 10);
  25    std::list<int, boost::fast_pool_allocator<int> > l;
  26
  27    for(int i = 0; i < 100; ++i)
  28       l.push_back(i);
  29
  30    for(int i = 0; i < 100000; ++i)
  31    {
  32       int val = dist(gen);
  33       if(val < 0)
  34       {
  35          while(val && l.size())
  36          {
  37             l.pop_back();
  38             ++i;
  39          }
  40       }
  41       else
  42       {
  43          while(val)
  44          {
  45             l.push_back(val);
  46             --val;
  47          }
  48       }
  49    }
  50 }
  51
  52 int main()
  53 {
  54    std::list<boost::shared_ptr<boost::thread> > threads;
  55    for(int i = 0; i < 10; ++i)
  56    {
  57       try{
  58          threads.push_back(boost::shared_ptr<boost::thread>(new boost::thread(&run_tests)));
  59       }
  60       catch(const std::exception& e)
  61       {
  62          std::cerr << "<note>Thread creation failed with message: " << e.what() << "</note>" << std::endl;
  63       }
  64    }
  65    std::list<boost::shared_ptr<boost::thread> >::const_iterator a(threads.begin()), b(threads.end());
  66    while(a != b)
  67    {
  68       (*a)->join();
  69       ++a;
  70    }
  71    return 0;
  72 }
  73