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// Copyright (C) 2014 Vicente Botet
//
// 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
// BoostFutureTest.cpp : Defines the entry point for the console application.
//
#include <iostream>
// boost version 1.60.0
// has the following set.
#define BOOST_THREAD_VERSION 4
// #define BOOST_THREAD_PROVIDES_EXECUTORS
#include <boost/thread/future.hpp>
int main()
{
#if __cplusplus >= 201103L
int value = 0;
int tmpValue = 0;
boost::promise<void> promise1;
boost::promise<void> promise2;
auto future1 = promise1.get_future();
auto waitFuture = future1.then([&tmpValue, &promise2](boost::future<void> future){
assert(future.is_ready()); // this works correctly and is ready.
auto fut = boost::async(boost::launch::async, [&promise2, &tmpValue](){
boost::this_thread::sleep_for(boost::chrono::seconds(1));
tmpValue = 1;
promise2.set_value();
std::cout << "Step 2 "<< std::endl; // should print 1 but prints 0
});
std::cout << "Step 1 "<< std::endl; // should print 1 but prints 0
return promise2.get_future();
//return ;
}).then([&value, &tmpValue](boost::future<boost::future<void>> future){
//}).then([&value, &tmpValue](boost::future<void> future){
// error: no matching function for call to ‘boost::future<boost::future<void> >::then(main()::<lambda(boost::future<void>)>)’
// as expected
assert(future.is_ready()); // this doesn't work correctly and is not ready.
value = tmpValue;
});
promise1.set_value();
waitFuture.wait();
std::cout << "value = " << value << std::endl; // should print 1 but prints 0
#endif
return 0;
}
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