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;
func()31 void func()
32 {
33   p.set_value_at_thread_exit(i);
34   i = 4;
35 }
36 
main()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 
50