| author | sl@SLION-WIN7.fritz.box |
| Fri, 15 Jun 2012 03:10:57 +0200 | |
| changeset 0 | bde4ae8d615e |
| permissions | -rw-r--r-- |
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#ifndef BOOST_STATECHART_EVENT_BASE_HPP_INCLUDED |
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#define BOOST_STATECHART_EVENT_BASE_HPP_INCLUDED |
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////////////////////////////////////////////////////////////////////////////// |
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// Copyright 2002-2006 Andreas Huber Doenni |
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// Distributed under the Boost Software License, Version 1.0. (See accompany- |
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// ing file LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt) |
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////////////////////////////////////////////////////////////////////////////// |
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#include <boost/statechart/detail/rtti_policy.hpp> |
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#include <boost/statechart/detail/counted_base.hpp> |
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#include <boost/assert.hpp> |
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#include <boost/intrusive_ptr.hpp> |
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#include <boost/config.hpp> |
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namespace boost |
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{
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namespace statechart |
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{
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namespace detail |
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{
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// This helper is necessary because there doesn't seem to be consensus among |
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// compilers on how a friend declaration for a function in another namespace |
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// has to look like. |
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class delete_helper |
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{
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public: |
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template< class T > |
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static void delete_object( const T * pObject ) |
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{
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delete pObject; |
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} |
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}; |
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} // namespace detail |
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////////////////////////////////////////////////////////////////////////////// |
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class event_base : public detail::rtti_policy::rtti_base_type< |
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detail::counted_base<> > |
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{
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typedef detail::rtti_policy::rtti_base_type< |
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detail::counted_base<> > base_type; |
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public: |
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////////////////////////////////////////////////////////////////////////// |
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intrusive_ptr< const event_base > intrusive_from_this() const; |
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protected: |
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////////////////////////////////////////////////////////////////////////// |
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event_base( detail::rtti_policy::id_provider_type idProvider ) : |
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base_type( idProvider ) |
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{
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} |
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virtual ~event_base() {}
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private: |
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////////////////////////////////////////////////////////////////////////// |
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virtual intrusive_ptr< const event_base > clone() const = 0; |
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friend class detail::delete_helper; |
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}; |
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#ifdef BOOST_NO_ARGUMENT_DEPENDENT_LOOKUP |
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} // namespace statechart |
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#endif |
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inline void intrusive_ptr_add_ref( const ::boost::statechart::event_base * pBase ) |
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{
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pBase->add_ref(); |
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} |
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inline void intrusive_ptr_release( const ::boost::statechart::event_base * pBase ) |
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{
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if ( pBase->release() ) |
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{
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::boost::statechart::detail::delete_helper::delete_object( pBase ); |
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} |
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} |
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#ifndef BOOST_NO_ARGUMENT_DEPENDENT_LOOKUP |
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} // namespace statechart |
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#endif |
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namespace statechart |
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{
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// We're implementing this here so that GCC3.4.2 can find |
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// intrusive_ptr_add_ref, which is indirectly called from the intrusive_ptr |
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// ctor. |
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inline intrusive_ptr< const event_base > event_base::intrusive_from_this() const |
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{
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if ( base_type::ref_counted() ) |
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{
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return intrusive_ptr< const event_base >( this ); |
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} |
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else |
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{
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return clone(); |
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} |
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} |
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} // namespace statechart |
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} // namespace boost |
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#endif |