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 // <future>
16 
17 // class promise<R>
18 
19 // promise& operator=(promise&& rhs);
20 
21 #define BOOST_THREAD_VERSION 4
22 #if BOOST_THREAD_VERSION == 4
23 #define BOOST_THREAD_DETAIL_SIGNATURE double()
24 #else
25 #define BOOST_THREAD_DETAIL_SIGNATURE double
26 #endif
27 
28 #include <boost/thread/future.hpp>
29 #include <boost/detail/lightweight_test.hpp>
30 
31 class A
32 {
33     long data_;
34 
35 public:
A(long i)36     explicit A(long i) : data_(i) {}
37 
operator ()() const38     long operator()() const {return data_;}
operator ()(long i,long j) const39     long operator()(long i, long j) const {return data_ + i + j;}
40 };
41 
42 
main()43 int main()
44 {
45 
46   {
47       boost::packaged_task<BOOST_THREAD_DETAIL_SIGNATURE> p0(A(5));
48       boost::packaged_task<BOOST_THREAD_DETAIL_SIGNATURE> p;
49       p = boost::move(p0);
50       BOOST_TEST(!p0.valid());
51       BOOST_TEST(p.valid());
52       boost::future<double> f = BOOST_THREAD_MAKE_RV_REF(p.get_future());
53       // p(3, 'a');
54       p();
55       BOOST_TEST(f.get() == 5.0);
56   }
57   {
58       boost::packaged_task<BOOST_THREAD_DETAIL_SIGNATURE> p0;
59       boost::packaged_task<BOOST_THREAD_DETAIL_SIGNATURE> p;
60       p = boost::move(p0);
61       BOOST_TEST(!p0.valid());
62       BOOST_TEST(!p.valid());
63   }
64 
65   return boost::report_errors();
66 
67 }
68 
69