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1 | // Copyright (C) 2013 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 | #include <iostream> | |
7 | ||
8 | #define USE_STD 0 | |
9 | #define USE_BOOST 1 | |
10 | ||
11 | #define USED_THREAD_API USE_BOOST | |
12 | //#define USED_THREAD_API USE_STD | |
13 | ||
14 | #if USED_THREAD_API == USE_BOOST | |
15 | ||
16 | # define BOOST_THREAD_VERSION 4 | |
17 | # include <boost/thread/future.hpp> | |
18 | ||
19 | using boost::future; | |
20 | using boost::async; | |
21 | ||
22 | #endif | |
23 | #if USED_THREAD_API == USE_STD | |
24 | # include <future> | |
25 | using std::future; | |
26 | using std::async; | |
27 | #endif | |
28 | ||
29 | ||
30 | ||
31 | future<void> do_something() | |
32 | { | |
33 | auto result = async( []{ std::cout<< "A\n"; } ); | |
34 | std::cout << "B\n"; | |
35 | return result; // error here | |
36 | } | |
37 | ||
38 | int main() | |
39 | { | |
40 | do_something().wait(); | |
41 | std::cout << "Hello, World!" << std::endl; | |
42 | return 0; | |
43 | } |