boost/signals2/signal.hpp

   1 /*
   2   A thread-safe version of Boost.Signals.
   3
   4   Author: Frank Mori Hess <fmhess@users.sourceforge.net>
   5   Begin: 2007-01-23
   6 */
   7 // Copyright Frank Mori Hess 2007-2008
   8 // Use, modification and
   9 // distribution is subject to the Boost Software License, Version
  10 // 1.0. (See accompanying file LICENSE_1_0.txt or copy at
  11 // http://www.boost.org/LICENSE_1_0.txt)
  12
  13 // For more information, see http://www.boost.org
  14
  15 #ifndef BOOST_SIGNALS2_SIGNAL_HPP
  16 #define BOOST_SIGNALS2_SIGNAL_HPP
  17
  18 #include <algorithm>
  19 #include <boost/assert.hpp>
  20 #include <boost/config.hpp>
  21 #include <boost/function.hpp>
  22 #include <boost/preprocessor/arithmetic.hpp>
  23 #include <boost/preprocessor/cat.hpp>
  24 #include <boost/preprocessor/iteration.hpp>
  25 #include <boost/preprocessor/repetition.hpp>
  26 #include <boost/shared_ptr.hpp>
  27 #include <boost/signals2/detail/unique_lock.hpp>
  28 #include <boost/signals2/optional_last_value.hpp>
  29 #include <boost/signals2/detail/result_type_wrapper.hpp>
  30 #include <boost/signals2/detail/signals_common.hpp>
  31 #include <boost/signals2/detail/signals_common_macros.hpp>
  32 #include <boost/signals2/detail/slot_groups.hpp>
  33 #include <boost/signals2/detail/slot_call_iterator.hpp>
  34 #include <boost/signals2/mutex.hpp>
  35 #include <boost/signals2/connection.hpp>
  36 #include <boost/signals2/slot.hpp>
  37 #include <boost/throw_exception.hpp>
  38 #include <boost/type_traits.hpp>
  39 #include <functional>
  40
  41 namespace boost
  42 {
  43   namespace signals2
  44   {
  45     namespace detail
  46     {
  47       template<typename ResultSlot, typename SlotIn, typename SlotFunction>
  48       ResultSlot replace_slot_function(const SlotIn &slot_in, const SlotFunction &fun)
  49       {
  50         ResultSlot slot(fun);
  51         slot_base::tracked_container_type tracked_objects = slot_in.tracked_objects();
  52         slot_base::tracked_container_type::const_iterator it;
  53         for(it = tracked_objects.begin(); it != tracked_objects.end(); ++it)
  54         {
  55           slot.track(*it);
  56         }
  57         return slot;
  58       }
  59     } // namespace detail
  60   } // namespace signals2
  61 } // namespace boost
  62
  63
  64 #define BOOST_PP_ITERATION_LIMITS (0, BOOST_SIGNALS2_MAX_ARGS)
  65 #define BOOST_PP_FILENAME_1 <boost/signals2/detail/signal_template.hpp>
  66 #include BOOST_PP_ITERATE()
  67
  68 namespace boost
  69 {
  70   namespace signals2
  71   {
  72     template<typename Signature,
  73       typename Combiner = optional_last_value<typename boost::function_traits<Signature>::result_type>,
  74       typename Group = int,
  75       typename GroupCompare = std::less<Group>,
  76       typename SlotFunction = function<Signature>,
  77       typename ExtendedSlotFunction = typename detail::extended_signature<function_traits<Signature>::arity, Signature>::function_type,
  78       typename Mutex = mutex >
  79     class signal: public detail::signalN<function_traits<Signature>::arity,
  80       Signature, Combiner, Group, GroupCompare, SlotFunction, ExtendedSlotFunction, Mutex>::type
  81     {
  82     private:
  83       typedef typename detail::signalN<boost::function_traits<Signature>::arity,
  84         Signature, Combiner, Group, GroupCompare, SlotFunction, ExtendedSlotFunction, Mutex>::type base_type;
  85     public:
  86       typedef Signature signature_type;
  87       signal(const Combiner &combiner = Combiner(), const GroupCompare &group_compare = GroupCompare()):
  88         base_type(combiner, group_compare)
  89       {}
  90     };
  91   }
  92 }
  93
  94 #endif // BOOST_SIGNALS2_SIGNAL_HPP