Chris@16: #ifndef BOOST_STATECHART_FIFO_SCHEDULER_HPP_INCLUDED
Chris@16: #define BOOST_STATECHART_FIFO_SCHEDULER_HPP_INCLUDED
Chris@16: //////////////////////////////////////////////////////////////////////////////
Chris@16: // Copyright 2002-2006 Andreas Huber Doenni
Chris@16: // Distributed under the Boost Software License, Version 1.0. (See accompany-
Chris@16: // ing file LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt)
Chris@16: //////////////////////////////////////////////////////////////////////////////
Chris@16: 
Chris@16: 
Chris@16: 
Chris@16: #include <boost/statechart/event_base.hpp>
Chris@16: #include <boost/statechart/fifo_worker.hpp>
Chris@16: #include <boost/statechart/processor_container.hpp>
Chris@16: 
Chris@16: #include <boost/intrusive_ptr.hpp>
Chris@16: #include <boost/noncopyable.hpp>
Chris@16: #include <boost/config.hpp> // BOOST_HAS_THREADS
Chris@16: 
Chris@16: 
Chris@16: 
Chris@16: namespace boost
Chris@16: {
Chris@16: namespace statechart
Chris@16: {
Chris@16: 
Chris@16: 
Chris@16: 
Chris@16: //////////////////////////////////////////////////////////////////////////////
Chris@16: template<
Chris@16:   class FifoWorker = fifo_worker<>,
Chris@16:   class Allocator = std::allocator< void > >
Chris@16: class fifo_scheduler : noncopyable
Chris@16: {
Chris@16:   typedef processor_container<
Chris@16:     fifo_scheduler, typename FifoWorker::work_item, Allocator > container;
Chris@16:   public:
Chris@16:     //////////////////////////////////////////////////////////////////////////
Chris@16:     #ifdef BOOST_HAS_THREADS
Chris@16:     fifo_scheduler( bool waitOnEmptyQueue = false ) :
Chris@16:       worker_( waitOnEmptyQueue )
Chris@16:     {
Chris@16:     }
Chris@16:     #endif
Chris@16: 
Chris@16:     typedef typename container::processor_handle processor_handle;
Chris@16:     typedef typename container::processor_context processor_context;
Chris@16: 
Chris@16:     template< class Processor >
Chris@16:     processor_handle create_processor()
Chris@16:     {
Chris@16:       processor_handle result;
Chris@16:       work_item item =
Chris@16:         container_.template create_processor< Processor >( result, *this );
Chris@16:       worker_.queue_work_item( item );
Chris@16:       return result;
Chris@16:     }
Chris@16: 
Chris@16:     template< class Processor, typename Arg1 >
Chris@16:     processor_handle create_processor( Arg1 arg1 )
Chris@16:     {
Chris@16:       processor_handle result;
Chris@16:       work_item item = container_.template create_processor< Processor >(
Chris@16:         result, *this, arg1 );
Chris@16:       worker_.queue_work_item( item );
Chris@16:       return result;
Chris@16:     }
Chris@16: 
Chris@16:     template< class Processor, typename Arg1, typename Arg2 >
Chris@16:     processor_handle create_processor( Arg1 arg1, Arg2 arg2 )
Chris@16:     {
Chris@16:       processor_handle result;
Chris@16:       work_item item = container_.template create_processor< Processor >(
Chris@16:         result, *this, arg1, arg2 );
Chris@16:       worker_.queue_work_item( item );
Chris@16:       return result;
Chris@16:     }
Chris@16: 
Chris@16:     template< class Processor, typename Arg1, typename Arg2, typename Arg3 >
Chris@16:     processor_handle create_processor( Arg1 arg1, Arg2 arg2, Arg3 arg3 )
Chris@16:     {
Chris@16:       processor_handle result;
Chris@16:       work_item item = container_.template create_processor< Processor >(
Chris@16:         result, *this, arg1, arg2, arg3 );
Chris@16:       worker_.queue_work_item( item );
Chris@16:       return result;
Chris@16:     }
Chris@16: 
Chris@16:     template<
Chris@16:       class Processor, typename Arg1, typename Arg2,
Chris@16:       typename Arg3, typename Arg4 >
Chris@16:     processor_handle create_processor(
Chris@16:       Arg1 arg1, Arg2 arg2, Arg3 arg3, Arg4 arg4 )
Chris@16:     {
Chris@16:       processor_handle result;
Chris@16:       work_item item = container_.template create_processor< Processor >(
Chris@16:         result, *this, arg1, arg2, arg3, arg4 );
Chris@16:       worker_.queue_work_item( item );
Chris@16:       return result;
Chris@16:     }
Chris@16: 
Chris@16:     template<
Chris@16:       class Processor, typename Arg1, typename Arg2,
Chris@16:       typename Arg3, typename Arg4, typename Arg5 >
Chris@16:     processor_handle create_processor(
Chris@16:       Arg1 arg1, Arg2 arg2, Arg3 arg3, Arg4 arg4, Arg5 arg5 )
Chris@16:     {
Chris@16:       processor_handle result;
Chris@16:       work_item item = container_.template create_processor< Processor >(
Chris@16:         result, *this, arg1, arg2, arg3, arg4, arg5 );
Chris@16:       worker_.queue_work_item( item );
Chris@16:       return result;
Chris@16:     }
Chris@16: 
Chris@16:     template<
Chris@16:       class Processor, typename Arg1, typename Arg2,
Chris@16:       typename Arg3, typename Arg4, typename Arg5, typename Arg6 >
Chris@16:     processor_handle create_processor(
Chris@16:       Arg1 arg1, Arg2 arg2, Arg3 arg3, Arg4 arg4, Arg5 arg5, Arg6 arg6 )
Chris@16:     {
Chris@16:       processor_handle result;
Chris@16:       work_item item = container_.template create_processor< Processor >(
Chris@16:         result, *this, arg1, arg2, arg3, arg4, arg5, arg6 );
Chris@16:       worker_.queue_work_item( item );
Chris@16:       return result;
Chris@16:     }
Chris@16: 
Chris@16:     void destroy_processor( const processor_handle & processor )
Chris@16:     {
Chris@16:       work_item item = container_.destroy_processor( processor );
Chris@16:       worker_.queue_work_item( item );
Chris@16:     }
Chris@16: 
Chris@16:     void initiate_processor( const processor_handle & processor )
Chris@16:     {
Chris@16:       work_item item = container_.initiate_processor( processor );
Chris@16:       worker_.queue_work_item( item );
Chris@16:     }
Chris@16: 
Chris@16:     void terminate_processor( const processor_handle & processor )
Chris@16:     {
Chris@16:       work_item item = container_.terminate_processor( processor );
Chris@16:       worker_.queue_work_item( item );
Chris@16:     }
Chris@16: 
Chris@16:     typedef intrusive_ptr< const event_base > event_ptr_type;
Chris@16: 
Chris@16:     void queue_event(
Chris@16:       const processor_handle & processor, const event_ptr_type & pEvent )
Chris@16:     {
Chris@16:       work_item item = container_.queue_event( processor, pEvent );
Chris@16:       worker_.queue_work_item( item );
Chris@16:     }
Chris@16: 
Chris@16:     typedef typename FifoWorker::work_item work_item;
Chris@16: 
Chris@16:     // We take a non-const reference so that we can move (i.e. swap) the item
Chris@16:     // into the queue, what avoids copying the (possibly heap-allocated)
Chris@16:     // implementation object inside work_item.
Chris@16:     void queue_work_item( work_item & item )
Chris@16:     {
Chris@16:       worker_.queue_work_item( item );
Chris@16:     }
Chris@16: 
Chris@16:     // Convenience overload so that temporary objects can be passed directly
Chris@16:     // instead of having to create a work_item object first. Under most
Chris@16:     // circumstances, this will lead to one unnecessary copy of the
Chris@16:     // function implementation object.
Chris@16:     void queue_work_item( const work_item & item )
Chris@16:     {
Chris@16:       worker_.queue_work_item( item );
Chris@16:     }
Chris@16: 
Chris@16:     void terminate()
Chris@16:     {
Chris@16:       worker_.terminate();
Chris@16:     }
Chris@16: 
Chris@16:     // Is not mutex-protected! Must only be called from the thread that also
Chris@16:     // calls operator().
Chris@16:     bool terminated() const
Chris@16:     {
Chris@16:       return worker_.terminated();
Chris@16:     }
Chris@16: 
Chris@16:     unsigned long operator()( unsigned long maxEventCount = 0 )
Chris@16:     {
Chris@16:       return worker_( maxEventCount );
Chris@16:     }
Chris@16: 
Chris@16:   private:
Chris@16:     //////////////////////////////////////////////////////////////////////////
Chris@16:     container container_;
Chris@16:     FifoWorker worker_;
Chris@16: };
Chris@16: 
Chris@16: 
Chris@16: 
Chris@16: } // namespace statechart
Chris@16: } // namespace boost
Chris@16: 
Chris@16: 
Chris@16: 
Chris@16: #endif