| /************************************************************** |
| * |
| * 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 _VOS_REFERNCE_HXX_ |
| #define _VOS_REFERNCE_HXX_ |
| |
| # include <vos/types.hxx> |
| # include <osl/interlck.h> |
| # include <vos/object.hxx> |
| |
| namespace vos |
| { |
| |
| /** Interface for refernce-counting |
| */ |
| class IReference |
| { |
| public: |
| |
| IReference() { } |
| virtual ~IReference() { } |
| |
| typedef oslInterlockedCount RefCount; |
| |
| virtual RefCount SAL_CALL acquire()=0; |
| virtual RefCount SAL_CALL release()=0; |
| |
| virtual RefCount SAL_CALL referenced() const=0; |
| }; |
| |
| class ORefCount |
| { |
| public: |
| typedef IReference::RefCount RefCount; |
| |
| ORefCount() { m_RefCount = 0; } |
| ORefCount(RefCount n) { m_RefCount = n; } |
| virtual ~ORefCount(); |
| |
| RefCount SAL_CALL acquire() { return (osl_incrementInterlockedCount(&m_RefCount)); }; |
| RefCount SAL_CALL release() { return (osl_decrementInterlockedCount(&m_RefCount)); }; |
| |
| RefCount SAL_CALL operator++() { return acquire(); } |
| // don't implement the postfix operator, it won't function this way! |
| |
| RefCount SAL_CALL operator--() { return release(); } |
| // don't implement the postfix operator, it won't function this way! |
| |
| RefCount SAL_CALL referenced() const |
| { return (m_RefCount); } |
| |
| protected: |
| RefCount m_RefCount; |
| |
| private: |
| // disable copy/assignment |
| ORefCount(const ORefCount&); |
| ORefCount& SAL_CALL operator= (const ORefCount&); |
| }; |
| |
| class OReference : public vos::IReference |
| { |
| public: |
| OReference(); |
| virtual ~OReference(); |
| |
| virtual RefCount SAL_CALL acquire(); |
| virtual RefCount SAL_CALL release(); |
| |
| virtual RefCount SAL_CALL referenced() const |
| { return (m_RefCount.referenced()); } |
| |
| protected: |
| ORefCount m_RefCount; |
| |
| private: |
| // disable copy/assignment |
| OReference(const OReference&); |
| OReference& SAL_CALL operator= (const OReference&); |
| }; |
| |
| } |
| |
| #endif // _VOS_REFERNCE_HXX_ |
| |