| /************************************************************** |
| * |
| * 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 _SYNCOBJECTS_HXX_ |
| #define _SYNCOBJECTS_HXX_ |
| |
| //------------------------------------------------------------------------ |
| // includes |
| //------------------------------------------------------------------------ |
| |
| #include <windows.h> |
| |
| //------------------------------------------------------------------------ |
| // a simple helper template for automatic locking/unlocking |
| //------------------------------------------------------------------------ |
| |
| template< class LOCK > |
| class CLockGuard |
| { |
| public: |
| CLockGuard( LOCK* aLock ) : |
| m_pLock( aLock ) |
| { |
| m_pLock->Lock( ); |
| } |
| |
| ~CLockGuard( ) |
| { |
| m_pLock->Unlock( ); |
| } |
| |
| private: |
| LOCK* m_pLock; |
| }; |
| |
| //------------------------------------------------------------------------ |
| // a interface base class for different locking sub classes |
| //------------------------------------------------------------------------ |
| |
| class CSyncObject |
| { |
| public: |
| virtual ~CSyncObject( ) = 0; |
| |
| virtual int Lock( ) = 0; |
| virtual int Unlock( ) = 0; |
| }; |
| |
| //------------------------------------------------------------------------ |
| // if no synchronization is necessary this class will be used |
| // declaring the functions as inline safes runtime overhead |
| //------------------------------------------------------------------------ |
| |
| class CNullLock |
| { |
| public: |
| inline virtual ~CNullLock ( ) {}; |
| inline virtual int Lock( ) {}; |
| inline virtual int Unlock() {}; |
| }; |
| |
| //------------------------------------------------------------------------ |
| // a minimal wrapper for a win32 critical section |
| //------------------------------------------------------------------------ |
| |
| class CCriticalSection : public CSyncObject |
| { |
| public: |
| CCriticalSection( ); |
| virtual ~CCriticalSection( ); |
| |
| // both functions return always 0 |
| // because the win32 critsec functions |
| // don't return any return code |
| virtual int Lock( ); |
| virtual int Unlock( ); |
| |
| private: |
| CRITICAL_SECTION m_critSec; |
| }; |
| |
| |
| typedef CLockGuard< CSyncObject > SyncObjLockGuard_t; |
| |
| #endif |