ceph/src/boost/libs/thread/test/sync/futures/promise/set_lvalue_at_thread_exit_pass.cpp

   1 //===----------------------------------------------------------------------===//
   2 //
   3 //                     The LLVM Compiler Infrastructure
   4 //
   5 // This file is dual licensed under the MIT and the University of Illinois Open
   6 // Source Licenses. See LICENSE.TXT for details.
   7 //
   8 //===----------------------------------------------------------------------===//
   9
  10 // Copyright (C) 2011 Vicente J. Botet Escriba
  11 //
  12 //  Distributed under the Boost Software License, Version 1.0. (See accompanying
  13 //  file LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt)
  14
  15 // <boost/thread/future.hpp>
  16
  17 // class promise<R>
  18
  19 // void promise<R&>::set_value_at_thread_exit(R& r);
  20
  21 #define BOOST_THREAD_VERSION 4
  22
  23 #include <boost/thread/future.hpp>
  24 #include <boost/detail/lightweight_test.hpp>
  25 #include <memory>
  26
  27 int i = 0;
  28
  29 //void func(boost::promise<int&> p)
  30 boost::promise<int&> p;
  31 void func()
  32 {
  33   p.set_value_at_thread_exit(i);
  34   i = 4;
  35 }
  36
  37 int main()
  38 {
  39   {
  40     //boost::promise<int&> p;
  41     boost::future<int&> f = p.get_future();
  42     //boost::thread(func, boost::move(p)).detach();
  43     boost::thread(func).detach();
  44     int r = f.get();
  45     BOOST_TEST(r == 4);
  46   }
  47   return boost::report_errors();
  48 }
  49