peerplays-fc/include/fc/signals.hpp
2013-06-05 15:19:00 -04:00

26 lines
819 B
C++

#include <boost/signal.hpp>
#include <fc/thread/future.hpp>
#include <fc/thread/thread.hpp>
namespace fc {
#if !defined(BOOST_NO_TEMPLATE_ALIASES)
template<typename T>
using signal = boost::signal<T>;
#else
#endif
template<typename T>
inline T wait( boost::signal<void(T)>& sig, const microseconds& timeout_us=microseconds::maximum() ) {
typename promise<T>::ptr p(new promise<T>());
boost::signals::scoped_connection c = sig.connect( [=]( T t ) { p->set_value(t); } );
return p->wait( timeout_us );
}
inline void wait( boost::signal<void()>& sig, const microseconds& timeout_us=microseconds::maximum() ) {
promise<void>::ptr p(new promise<void>());
boost::signals::scoped_connection c = sig.connect( [=]() { p->set_value(); } );
p->wait( timeout_us );
}
}