ceph/src/boost/libs/thread/test/test_9079_a.cpp

   1 // Copyright (C) 2013 Vicente Botet
   2 //
   3 //  Distributed under the Boost Software License, Version 1.0. (See accompanying
   4 //  file LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt)
   5
   6 // A
   7
   8 //#include <boost/log/trivial.hpp>
   9 #include <boost/chrono.hpp>
  10 #include <boost/thread.hpp>
  11 #include <boost/thread/condition_variable.hpp>
  12
  13 //#if !defined(BOOST_NO_CXX11_ALIGNAS)
  14 //#error
  15 //#  define BOOST_ALIGNMENT2(x) alignas(x)
  16 //#elif defined(_MSC_VER)
  17 //#error
  18 //#  define BOOST_ALIGNMENT2(x) __declspec(align(x))
  19 //#elif defined(__GNUC__)
  20 //#error
  21 //#  define BOOST_ALIGNMENT(x) __attribute__ ((__aligned__(x)))
  22 //#else
  23 //#error
  24 //#  define BOOST_NO_ALIGNMENT2
  25 //#  define BOOST_ALIGNMENT2(x)
  26 //#endif
  27
  28 typedef boost::chrono::high_resolution_clock Clock;
  29 typedef Clock::time_point TimePoint;
  30
  31 inline TimePoint real_time_now()
  32 {
  33   return Clock::now();
  34 }
  35
  36 int main()
  37 {
  38   using namespace boost::chrono;
  39
  40   boost::condition_variable m_task_spawn_condition;
  41
  42   boost::mutex main_thread_mutex;
  43   boost::unique_lock < boost::mutex > main_thread_lock(main_thread_mutex);
  44
  45   //BOOST_LOG_TRIVIAL(info) << "[TaskScheduler::run_and_wait] Scheduling loop - BEGIN";
  46
  47   //for (;;)
  48   {
  49     static const milliseconds TIME_BACK = milliseconds(1);
  50     m_task_spawn_condition.wait_until(
  51         main_thread_lock,
  52         real_time_now() - TIME_BACK); // wait forever
  53     m_task_spawn_condition.wait_for( main_thread_lock, - TIME_BACK ); // same problem
  54     //BOOST_LOG_TRIVIAL(trace) << "TICK";
  55   }
  56
  57 }