22 #ifndef NDN_UTIL_SIGNAL_SIGNAL_HPP 23 #define NDN_UTIL_SIGNAL_SIGNAL_HPP 49 template<
typename Owner,
typename ...TArgs>
55 typedef function<void(
const TArgs&...)>
Handler;
66 connect(
const Handler& handler);
89 operator()(
const TArgs&...args);
98 #if NDN_CXX_HAVE_CXX_FRIEND_TYPENAME 100 #elif NDN_CXX_HAVE_CXX_FRIEND_TYPENAME_WRAPPER 106 friend class TypeWrapper<Owner>::Type;
108 # error "cannot declare Owner as friend" 119 typedef std::list<Slot> SlotList;
139 shared_ptr<function<void()>> disconnect;
161 template<
typename Owner,
typename ...TArgs>
163 : m_isExecuting(false)
167 template<
typename Owner,
typename ...TArgs>
170 BOOST_ASSERT(!m_isExecuting);
173 template<
typename Owner,
typename ...TArgs>
178 it->disconnect = make_shared<function<void()>>(bind(&Self::disconnect,
this, it));
183 template<
typename Owner,
typename ...TArgs>
188 it->disconnect = make_shared<function<void()>>(bind(&Self::disconnect,
this, it));
191 it->handler = [conn, handler] (
const TArgs&... args)
mutable {
199 template<
typename Owner,
typename ...TArgs>
207 BOOST_ASSERT_MSG(it == m_currentSlot,
"cannot disconnect another handler from a handler");
211 m_currentSlot = m_slots.end();
214 it->disconnect.reset();
221 template<
typename Owner,
typename ...TArgs>
225 return !m_isExecuting && m_slots.empty();
228 template<
typename Owner,
typename ...TArgs>
232 BOOST_ASSERT_MSG(!m_isExecuting,
"cannot emit signal from a handler");
234 if (m_slots.empty()) {
238 auto it = m_slots.begin();
239 auto last = std::prev(m_slots.end());
240 m_isExecuting =
true;
248 m_currentSlot->handler(args...);
250 if (m_currentSlot == m_slots.end())
251 it = m_slots.erase(it);
257 m_isExecuting =
false;
261 m_isExecuting =
false;
264 template<
typename Owner,
typename ...TArgs>
268 this->operator()(args...);
279 #endif // NDN_UTIL_SIGNAL_SIGNAL_HPP Connection connectSingleShot(const Handler &handler)
connects a single-shot handler to the signal
Copyright (c) 2011-2015 Regents of the University of California.
represents a connection to a signal
provides a lightweight signal / event system
Table::const_iterator iterator
Connection connect(const Handler &handler)
connects a handler to the signal
function< void(const TArgs &...)> Handler
represents a function that can connect to the signal