void t_future(){
//NOTICE("fut.get");
//fut.get();
NOTICE("fut.wait");
fut.wait();
thread t1(fut_wait), t2(fut_wait), t3(fut_wait);
while(true){
prom = promise<bool>();
fut = prom.get_future();
sleep(2);
prom.set_value(false);
sleep(3);
}
t1.join();
t2.join();
t3.join();
}
void calculate()
{
this_thread::sleep_for(chrono::milliseconds(1000));
fut=the_answer_to_life_the_universe_and_everything.get_future();
the_answer_to_life_the_universe_and_everything.set_value(42);
}
callable ca( fn, boost::move( prom), ctx2);
shared_ptr< thread > thrd( new thread( ca), detail::joiner() );
ctx1.reset( thrd);
return t;
}
template< typename Fn >
task< typename result_of< Fn() >::result_type >
operator()( BOOST_RV_REF( Fn) fn)
{
typedef typename result_of< Fn() >::result_type R;
BOOST_ASSERT( ! this_task::runs_in_pool() );
promise< R > prom;
unique_future< R > f( prom.get_future() );
context ctx1, ctx2;
task< R > t( f, ctx1);
callable ca( boost::move( fn), boost::move( prom), ctx2);
shared_ptr< thread > thrd( new thread( ca), detail::joiner() );
ctx1.reset( thrd);
return t;
}
};
}}
#ifdef BOOST_HAS_ABI_HEADERS
# include BOOST_ABI_SUFFIX
#endif