ceph/src/boost/libs/thread/test/test_scheduled_tp.cpp

   1 // Copyright (C) 2014 Ian Forbed
   2 // Copyright (C) 2014 Vicente J. Botet Escriba
   3 //
   4 //  Distributed under the Boost Software License, Version 1.0. (See accompanying
   5 //  file LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt)
   6 //
   7
   8 #include <boost/config.hpp>
   9 #if ! defined  BOOST_NO_CXX11_DECLTYPE
  10 #define BOOST_RESULT_OF_USE_DECLTYPE
  11 #endif
  12
  13 #define BOOST_THREAD_VERSION 4
  14 #define BOOST_THREAD_PROVIDES_EXECUTORS
  15
  16 #include <boost/bind.hpp>
  17 #include <boost/chrono.hpp>
  18 #include <boost/chrono/chrono_io.hpp>
  19 #include <boost/function.hpp>
  20 #include <boost/thread/executors/scheduled_thread_pool.hpp>
  21 #include <iostream>
  22
  23 #include <boost/core/lightweight_test.hpp>
  24
  25 using namespace boost::chrono;
  26
  27 typedef boost::scheduled_thread_pool scheduled_tp;
  28
  29 void fn(int x)
  30 {
  31   std::cout << x << std::endl;
  32 }
  33
  34 void func(steady_clock::time_point pushed, steady_clock::duration dur)
  35 {
  36     BOOST_TEST(pushed + dur < steady_clock::now());
  37 }
  38 void func2(scheduled_tp* tp, steady_clock::duration d)
  39 {
  40   boost::function<void()> fn = boost::bind(func,steady_clock::now(),d);
  41   tp->submit_after(fn, d);
  42 }
  43
  44
  45
  46 void test_timing(const int n)
  47 {
  48   //This function should take n seconds to execute.
  49   boost::scheduled_thread_pool se(4);
  50
  51   for(int i = 1; i <= n; i++)
  52   {
  53     se.submit_after(boost::bind(fn,i), milliseconds(i*100));
  54   }
  55   boost::this_thread::sleep_for(boost::chrono::seconds(10));
  56   //dtor is called here so all task will have to be executed before we return
  57 }
  58
  59 void test_deque_timing()
  60 {
  61     boost::scheduled_thread_pool se(4);
  62     for(int i = 0; i < 10; i++)
  63     {
  64         steady_clock::duration d = milliseconds(i*100);
  65         boost::function<void()> fn = boost::bind(func,steady_clock::now(),d);
  66         se.submit_after(fn,d);
  67     }
  68 }
  69
  70 void test_deque_multi(const int n)
  71 {
  72     scheduled_tp se(4);
  73     boost::thread_group tg;
  74     for(int i = 0; i < n; i++)
  75     {
  76         steady_clock::duration d = milliseconds(i*100);
  77         //boost::function<void()> fn = boost::bind(func,steady_clock::now(),d);
  78         //tg.create_thread(boost::bind(boost::mem_fn(&scheduled_tp::submit_after), &se, fn, d));
  79         tg.create_thread(boost::bind(func2, &se, d));
  80     }
  81     tg.join_all();
  82     //dtor is called here so execution will block until all the closures
  83     //have been completed.
  84 }
  85
  86 int main()
  87 {
  88   steady_clock::time_point start = steady_clock::now();
  89   test_timing(5);
  90   steady_clock::duration diff = steady_clock::now() - start;
  91   BOOST_TEST(diff > milliseconds(500));
  92   test_deque_timing();
  93   test_deque_multi(4);
  94   test_deque_multi(8);
  95   test_deque_multi(16);
  96   return boost::report_errors();
  97 }