| /************************************************************** |
| * |
| * Licensed to the Apache Software Foundation (ASF) under one |
| * or more contributor license agreements. See the NOTICE file |
| * distributed with this work for additional information |
| * regarding copyright ownership. The ASF licenses this file |
| * to you under the Apache License, Version 2.0 (the |
| * "License"); you may not use this file except in compliance |
| * with the License. You may obtain a copy of the License at |
| * |
| * http://www.apache.org/licenses/LICENSE-2.0 |
| * |
| * Unless required by applicable law or agreed to in writing, |
| * software distributed under the License is distributed on an |
| * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY |
| * KIND, either express or implied. See the License for the |
| * specific language governing permissions and limitations |
| * under the 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_ */ |