thread/test/test_11818.cpp at develop · boostorg/thread · GitHub

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// Distributed under the Boost Software License, Version 1.0. (See accompanying

// file LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt)

#define BOOST_THREAD_VERSION 4

#include <boost/config.hpp>

#if ! defined BOOST_NO_CXX11_DECLTYPE

#define BOOST_RESULT_OF_USE_DECLTYPE

#endif

#include <boost/thread/future.hpp>

#include <boost/thread/thread.hpp>

#include <thread>

int main()

{

boost::promise<int> promise;

boost::future<int> future = promise.get_future();

boost::future<int> result =

future.then

(

boost::launch::deferred,

[](boost::future<int> && f)

{

std::cout << std::this_thread::get_id() << ": callback" << std::endl;

std::cout << "The value is: " << f.get() << std::endl;

return f.get();

}

);

// We could not reach here.

std::cout << std::this_thread::get_id() << ": function" << std::endl;

promise.set_value(0);

}

{

boost::promise<int> promise;

boost::shared_future<int> future = promise.get_future().share();

boost::future<int> result =

future.then

(

boost::launch::deferred,

[](boost::shared_future<int> && f)

{

std::cout << std::this_thread::get_id() << ": callback" << std::endl;

std::cout << "The value is: " << f.get() << std::endl;

return f.get();

}

);

// We could not reach here.

std::cout << std::this_thread::get_id() << ": function" << std::endl;

promise.set_value(0);

}

return 0;

}

thread/test/test_11818.cpp at develop · boostorg/thread · GitHub

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