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+/*************************************************************************
+ *
+ * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
+ *
+ * Copyright 2000, 2010 Oracle and/or its affiliates.
+ *
+ * OpenOffice.org - a multi-platform office productivity suite
+ *
+ * This file is part of OpenOffice.org.
+ *
+ * OpenOffice.org is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU Lesser General Public License version 3
+ * only, as published by the Free Software Foundation.
+ *
+ * OpenOffice.org is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU Lesser General Public License version 3 for more details
+ * (a copy is included in the LICENSE file that accompanied this code).
+ *
+ * You should have received a copy of the GNU Lesser General Public License
+ * version 3 along with OpenOffice.org. If not, see
+ * <http://www.openoffice.org/license.html>
+ * for a copy of the LGPLv3 License.
+ *
+ ************************************************************************/
+
+#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_ */