libs/thread/test/test_4521.cpp

   1 // Copyright (C) 2010 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 #define BOOST_THREAD_VERSION 2
   7
   8 #include <boost/thread/thread_only.hpp>
   9 #include <boost/thread/future.hpp>
  10
  11 int calculate_the_answer_to_life_the_universe_and_everything()
  12 {
  13     return 42;
  14 }
  15
  16 int main() {
  17 boost::packaged_task<int> pt(calculate_the_answer_to_life_the_universe_and_everything);
  18
  19 //boost::unique_future<int> fi = BOOST_THREAD_MAKE_RV_REF(pt.get_future());
  20 boost::unique_future<int> fi((BOOST_THREAD_MAKE_RV_REF(pt.get_future())));
  21
  22 boost::thread task(boost::move(pt)); // launch task on a thread
  23
  24 fi.wait(); // wait for it to finish
  25
  26 //assert(fi.is_ready());
  27 //assert(fi.has_value());
  28 //assert(!fi.has_exception());
  29 //assert(fi.get_state()==boost::future_state::ready);
  30 //assert(fi.get()==42);
  31 }