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Diffstat (limited to 'salhelper/inc/salhelper/future.hxx')
-rw-r--r-- | salhelper/inc/salhelper/future.hxx | 120 |
1 files changed, 120 insertions, 0 deletions
diff --git a/salhelper/inc/salhelper/future.hxx b/salhelper/inc/salhelper/future.hxx new file mode 100644 index 000000000000..a16b9c8815d6 --- /dev/null +++ b/salhelper/inc/salhelper/future.hxx @@ -0,0 +1,120 @@ +/************************************************************************* + * + * 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_ */ |