future::wait_for test

test.

#include <hpx/hpx.hpp>
#include <boost/chrono.hpp>
#include <boost/thread/thread.hpp>


int hpx_main() {
	const auto timeout_time = boost::posix_time::time_duration(boost::posix_time::seconds(1));



	while(true) {
		auto start_time = boost::chrono::high_resolution_clock::now();
		decltype(start_time) end_time;
		auto f = hpx::async([&](){
			end_time = boost::chrono::high_resolution_clock::now();
		});
		if( f.wait_for(timeout_time) == hpx::lcos::future_status::timeout ) {
			end_time = boost::chrono::high_resolution_clock::now();
			boost::chrono::duration<double>  dif = end_time - start_time;
			printf( "Future timed out after %e seconds. ", dif.count() );
			break;
		} else {
			f.get();
		}
		end_time = boost::chrono::high_resolution_clock::now();
		boost::chrono::duration<double>  dif = end_time - start_time;
		printf( "Future took %e seconds\n", dif.count() );
	}
	exit(0);
	return 0;
}