| /************************************************************** |
| * |
| * 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 DBAUI_ASYNCRONOUSLINK_HXX |
| #define DBAUI_ASYNCRONOUSLINK_HXX |
| |
| #include <tools/link.hxx> |
| #include <osl/mutex.hxx> |
| |
| namespace dbaui |
| { |
| // ========================================================================= |
| // a helper for multi-threaded handling of async events |
| // ------------------------------------------------------------------------- |
| /** handles asynchronous links which may be called in multi-threaded environments |
| If you use an instance of this class as member of your own class, it will handle |
| several crucial points for you (for instance the case that somebody posts the |
| event while another thread tries to delete this event in the _destructor_ of the |
| class). |
| */ |
| class OAsyncronousLink |
| { |
| Link m_aHandler; |
| |
| protected: |
| ::osl::Mutex m_aEventSafety; |
| ::osl::Mutex m_aDestructionSafety; |
| sal_uLong m_nEventId; |
| |
| public: |
| /** constructs the object |
| @param _rHandler The link to be called asyncronously |
| */ |
| OAsyncronousLink( const Link& _rHandler ); |
| virtual ~OAsyncronousLink(); |
| |
| bool IsRunning() const { return m_nEventId != 0; } |
| |
| void Call( void* _pArgument = NULL ); |
| void CancelCall(); |
| |
| protected: |
| DECL_LINK(OnAsyncCall, void*); |
| }; |
| } |
| #endif // DBAUI_ASYNCRONOUSLINK_HXX |
| |