/usr/include/libreoffice/salhelper/futurequeue.hxx is in libreoffice-dev 1:3.5.2-2ubuntu1.
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#ifndef _SALHELPER_FUTUREQUEUE_HXX_
#define _SALHELPER_FUTUREQUEUE_HXX_
#include <sal/types.h>
#include <rtl/ref.hxx>
#include <osl/mutex.hxx>
#include <salhelper/future.hxx>
#include <salhelper/queue.hxx>
namespace salhelper
{
//----------------------------------------------------------------------------
#ifndef SALHELPER_COPYCTOR_API
#define SALHELPER_COPYCTOR_API(C) C (const C&); C& operator= (const C&)
#endif
//----------------------------------------------------------------------------
template<class element_type>
class FutureQueue : protected osl::Mutex
{
/** Representation.
*/
typedef salhelper::Future<element_type> future_type;
salhelper::QueueBase< rtl::Reference<future_type> > m_aDelayed;
salhelper::QueueBase< rtl::Reference<future_type> > m_aPresent;
/** Not implemented.
*/
SALHELPER_COPYCTOR_API(FutureQueue<element_type>);
public:
/** Construction.
*/
inline FutureQueue()
{}
/** Destruction.
*/
inline ~FutureQueue()
{}
/** Enqueue element at queue tail.
*/
inline void put (const element_type& element)
{
osl::MutexGuard aGuard (*this);
rtl::Reference<future_type> xFuture (m_aDelayed.get());
if (!xFuture.is())
{
xFuture = new future_type();
m_aPresent.put (xFuture);
}
xFuture->set (element);
}
/** Dequeue a future to element at queue head.
*/
inline rtl::Reference< salhelper::Future<element_type> > get()
{
osl::MutexGuard aGuard (*this);
rtl::Reference<future_type> xFuture (m_aPresent.get());
if (!xFuture.is())
{
xFuture = new future_type();
m_aDelayed.put (xFuture);
}
return (xFuture);
}
};
//----------------------------------------------------------------------------
} // namespace salhelper
#endif /* !_SALHELPER_FUTUREQUEUE */
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