Ticket #6006: fd_leak_test.cpp

/*
* On Linux
* g++ -Wall -g fd_leak_test.cpp -lboost_system -lboost_thread -lpthread
* This program may cause fd leaks
*
* */
#include <stdlib.h>
#include <stdio.h>
#include <boost/asio.hpp>
#include <boost/thread.hpp>

static void test()
{
#define N 1024
  boost::asio::io_service * ios[N];
  boost::asio::ip::tcp::socket * socks[N];

  for (size_t i=0; i<N; i++)
  {
    try
    {
      ios[i] = new boost::asio::io_service();
    }
    catch (std::exception& e)
    {
      ios[i] = NULL;
      continue;
    }

    try
    {
      socks[i] = new boost::asio::ip::tcp::socket(*ios[i]);
    }
    catch (std::exception& e)
    {
      socks[i] = NULL;
    }
  }


  for (size_t i=0; i<N; i++)
  {
    delete socks[i];
    delete ios[i];
  }
}

int main(int argc, char ** argv)
{
  char cmd[128];

  snprintf(cmd, sizeof(cmd), "ls -al /proc/self/fd");

  printf("press any key to begin\n");
  getchar();
  system(cmd);


  boost::thread_group tg;
  for (int j=0; j<20; j++)
  {
    tg.create_thread(test);
  }
  tg.join_all();

  printf("press any key to continue\n");
  getchar();
  system(cmd);
  return 0;
}