UDK 3.2.7 C/C++ API Reference
salhelper/futurequeue.hxx
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00028 
00029 #ifndef _SALHELPER_FUTUREQUEUE_HXX_
00030 #define _SALHELPER_FUTUREQUEUE_HXX_
00031 
00032 #include <sal/types.h>
00033 #include <rtl/ref.hxx>
00034 #include <osl/mutex.hxx>
00035 #include <salhelper/future.hxx>
00036 #include <salhelper/queue.hxx>
00037 
00038 namespace salhelper
00039 {
00040 
00041 //----------------------------------------------------------------------------
00042 
00043 #ifndef SALHELPER_COPYCTOR_API
00044 #define SALHELPER_COPYCTOR_API(C) C (const C&); C& operator= (const C&)
00045 #endif
00046 
00047 //----------------------------------------------------------------------------
00048 
00049 template<class element_type>
00050 class FutureQueue : protected osl::Mutex
00051 {
00054     typedef salhelper::Future<element_type> future_type;
00055 
00056     salhelper::QueueBase< rtl::Reference<future_type> > m_aDelayed;
00057     salhelper::QueueBase< rtl::Reference<future_type> > m_aPresent;
00058 
00061     SALHELPER_COPYCTOR_API(FutureQueue<element_type>);
00062 
00063 public:
00066     inline FutureQueue()
00067     {}
00068 
00071     inline ~FutureQueue()
00072     {}
00073 
00076     inline void put (const element_type& element)
00077     {
00078         osl::MutexGuard aGuard (*this);
00079 
00080         rtl::Reference<future_type> xFuture (m_aDelayed.get());
00081         if (!xFuture.is())
00082         {
00083             xFuture = new future_type();
00084             m_aPresent.put (xFuture);
00085         }
00086         xFuture->set (element);
00087     }
00088 
00091     inline rtl::Reference< salhelper::Future<element_type> > get()
00092     {
00093         osl::MutexGuard aGuard (*this);
00094 
00095         rtl::Reference<future_type> xFuture (m_aPresent.get());
00096         if (!xFuture.is())
00097         {
00098             xFuture = new future_type();
00099             m_aDelayed.put (xFuture);
00100         }
00101         return (xFuture);
00102     }
00103 };
00104 
00105 //----------------------------------------------------------------------------
00106 
00107 } // namespace salhelper
00108 
00109 #endif /* !_SALHELPER_FUTUREQUEUE */
00110 
00111 /* vim:set shiftwidth=4 softtabstop=4 expandtab: */
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