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 // future<R> get_future();
20 
21 #define BOOST_THREAD_VERSION 3
22 
23 #include <boost/thread/future.hpp>
24 #include <boost/detail/lightweight_test.hpp>
25 
main()26 int main()
27 {
28   {
29       boost::promise<double> p;
30       boost::future<double> f = BOOST_THREAD_MAKE_RV_REF(p.get_future());
31       p.set_value(105.5);
32       BOOST_TEST(f.get() == 105.5);
33   }
34   {
35       boost::promise<double> p;
36       boost::future<double> f = BOOST_THREAD_MAKE_RV_REF(p.get_future());
37       try
38       {
39           f = BOOST_THREAD_MAKE_RV_REF(p.get_future());
40           BOOST_TEST(false);
41       }
42       catch (const boost::future_error& e)
43       {
44           BOOST_TEST(e.code() ==  boost::system::make_error_code(boost::future_errc::future_already_retrieved));
45       }
46   }
47   {
48       boost::promise<double> p;
49       boost::promise<double> p0 = boost::move(p);
50       try
51       {
52           boost::future<double> f = BOOST_THREAD_MAKE_RV_REF(p.get_future());
53           BOOST_TEST(false);
54       }
55       catch (const boost::future_error& e)
56       {
57           BOOST_TEST(e.code() ==  boost::system::make_error_code(boost::future_errc::no_state));
58       }
59   }
60 
61 
62   return boost::report_errors();
63 }
64 
65