| 1 | // Copyright (C) 2010 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 | #define BOOST_THREAD_VERSION 4 |
| 7 | |
| 8 | #include <cassert> |
| 9 | #include <vector> |
| 10 | #include <future> |
| 11 | #include <functional> |
| 12 | #include <boost/thread/future.hpp> |
| 13 | |
| 14 | |
| 15 | int TRUC = 42; |
| 16 | int main() |
| 17 | { |
| 18 | std::vector< std::function<void()> > work_queue; |
| 19 | |
| 20 | auto do_some_work = [&]()-> boost::future<int*> |
| 21 | { |
| 22 | auto promise = std::make_shared<boost::promise<int*>>(); |
| 23 | #if 0 |
| 24 | work_queue.push_back( [=] |
| 25 | { |
| 26 | promise->set_value( &TRUC ); |
| 27 | }); |
| 28 | #else |
| 29 | auto inner = [=]() |
| 30 | { |
| 31 | promise->set_value( &TRUC ); |
| 32 | }; |
| 33 | work_queue.push_back(x: inner); |
| 34 | |
| 35 | #endif |
| 36 | |
| 37 | return promise->get_future(); |
| 38 | |
| 39 | }; |
| 40 | |
| 41 | auto ft_value = do_some_work(); |
| 42 | |
| 43 | while( !work_queue.empty() ) |
| 44 | { |
| 45 | #if 0 |
| 46 | auto work = work_queue.back(); |
| 47 | #else |
| 48 | std::function<void()> work; |
| 49 | work = work_queue.back(); |
| 50 | #endif |
| 51 | work_queue.pop_back(); |
| 52 | work(); |
| 53 | } |
| 54 | |
| 55 | auto value = ft_value.get(); |
| 56 | assert( value == &TRUC ); |
| 57 | return 0; |
| 58 | } |
| 59 | |
| 60 | |
| 61 |