#ifndef SIMGRID_XBT_SIGNAL_HPP
#define SIMGRID_XBT_SIGNAL_HPP
-#if SIMGRID_HAVE_LIBSIG
-#include <sigc++/sigc++.h>
-#else
-#include <boost/signals2.hpp>
-#endif
+#include <functional>
+#include <utility>
+#include <vector>
namespace simgrid {
namespace xbt {
-#if SIMGRID_HAVE_LIBSIG
+ template<class S> class signal;
- // Wraps sigc++ signals with the interface of boost::signals2:
- template<class T> class signal;
+ /** A signal/slot mechanism
+ *
+ * S is expected to be the function signature of the signal.
+ * I'm not sure we need a return value (it is currently ignored).
+ * If we don't we might use `signal<P1, P2, ...>` instead.
+ */
template<class R, class... P>
class signal<R(P...)> {
private:
- sigc::signal<R, P...> sig_;
+ typedef std::function<R(P...)> callback_type;
+ std::vector<callback_type> handlers_;
public:
- template<class U> XBT_ALWAYS_INLINE
- void connect(U&& slot)
- {
- sig_.connect(std::forward<U>(slot));
- }
- template<class Res, class... Args> XBT_ALWAYS_INLINE
- void connect(Res(*slot)(Args...))
+ template<class U>
+ void connect(U slot)
{
- sig_.connect(sigc::ptr_fun(slot));
+ handlers_.push_back(std::move(slot));
}
- template<class... Args> XBT_ALWAYS_INLINE
- R operator()(Args&&... args) const
+ R operator()(P... args) const
{
- return sig_.emit(std::forward<Args>(args)...);
+ for (auto& handler : handlers_)
+ handler(args...);
}
void disconnect_all_slots()
{
- sig_.clear();
+ handlers_.clear();
}
};
-#else
-
- template<class T>
- using signal = ::boost::signals2::signal<T>;
-
-#endif
-
}
}
