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#ifndef _SALHELPER_FUTURE_HXX_
#define _SALHELPER_FUTURE_HXX_
#include <sal/types.h>
#include <osl/diagnose.h>
#include <osl/conditn.hxx>
#include <salhelper/refobj.hxx>
namespace salhelper
{
//----------------------------------------------------------------------------
#ifndef SALHELPER_COPYCTOR_API
#define SALHELPER_COPYCTOR_API(C) C (const C&); C& operator= (const C&)
#endif
//----------------------------------------------------------------------------
template<class value_type>
class FutureValue : protected osl::Condition
{
/** Representation.
*/
value_type m_aValue;
/** Not implemented.
*/
SALHELPER_COPYCTOR_API(FutureValue<value_type>);
public:
inline FutureValue (const value_type& value = value_type()) SAL_THROW(())
: m_aValue (value)
{
Condition::reset();
}
inline ~FutureValue() SAL_THROW(())
{}
inline sal_Bool is() const SAL_THROW(())
{
return const_cast<FutureValue*>(this)->check();
}
inline void set (const value_type& value) SAL_THROW(())
{
m_aValue = value;
Condition::set();
}
inline value_type& get() SAL_THROW(())
{
Condition::wait();
return m_aValue;
}
};
//----------------------------------------------------------------------------
template<class value_type>
class Future : public salhelper::ReferenceObject
{
/** Representation.
*/
FutureValue<value_type> m_aValue;
/** Not implemented.
*/
SALHELPER_COPYCTOR_API(Future<value_type>);
public:
inline Future (const value_type& value = value_type()) SAL_THROW(())
: m_aValue (value)
{}
inline void set (const value_type& value) SAL_THROW(())
{
OSL_PRECOND(!m_aValue.is(), "Future::set(): value already set");
m_aValue.set (value);
}
inline value_type& get() SAL_THROW(())
{
return m_aValue.get();
}
};
//----------------------------------------------------------------------------
} // namespace salhelper
#endif /* !_SALHELPER_FUTURE_HXX_ */
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