1*f8e07b45SAndrew Rist /************************************************************** 2cdf0e10cSrcweir * 3*f8e07b45SAndrew Rist * Licensed to the Apache Software Foundation (ASF) under one 4*f8e07b45SAndrew Rist * or more contributor license agreements. See the NOTICE file 5*f8e07b45SAndrew Rist * distributed with this work for additional information 6*f8e07b45SAndrew Rist * regarding copyright ownership. The ASF licenses this file 7*f8e07b45SAndrew Rist * to you under the Apache License, Version 2.0 (the 8*f8e07b45SAndrew Rist * "License"); you may not use this file except in compliance 9*f8e07b45SAndrew Rist * with the License. You may obtain a copy of the License at 10*f8e07b45SAndrew Rist * 11*f8e07b45SAndrew Rist * http://www.apache.org/licenses/LICENSE-2.0 12*f8e07b45SAndrew Rist * 13*f8e07b45SAndrew Rist * Unless required by applicable law or agreed to in writing, 14*f8e07b45SAndrew Rist * software distributed under the License is distributed on an 15*f8e07b45SAndrew Rist * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY 16*f8e07b45SAndrew Rist * KIND, either express or implied. See the License for the 17*f8e07b45SAndrew Rist * specific language governing permissions and limitations 18*f8e07b45SAndrew Rist * under the License. 19*f8e07b45SAndrew Rist * 20*f8e07b45SAndrew Rist *************************************************************/ 21*f8e07b45SAndrew Rist 22*f8e07b45SAndrew Rist 23cdf0e10cSrcweir 24cdf0e10cSrcweir #ifndef __FRAMEWORK_HELPER_SHAREABLEMUTEX_HXX_ 25cdf0e10cSrcweir #define __FRAMEWORK_HELPER_SHAREABLEMUTEX_HXX_ 26cdf0e10cSrcweir 27cdf0e10cSrcweir #include <osl/interlck.h> 28cdf0e10cSrcweir #include <osl/mutex.hxx> 29cdf0e10cSrcweir #include <fwidllapi.h> 30cdf0e10cSrcweir 31cdf0e10cSrcweir namespace framework 32cdf0e10cSrcweir { 33cdf0e10cSrcweir 34cdf0e10cSrcweir class FWI_DLLPUBLIC ShareableMutex 35cdf0e10cSrcweir { 36cdf0e10cSrcweir public: 37cdf0e10cSrcweir ShareableMutex(); 38cdf0e10cSrcweir ShareableMutex( const ShareableMutex& rShareableMutex ); 39cdf0e10cSrcweir const ShareableMutex& operator=( const ShareableMutex& rShareableMutex ); 40cdf0e10cSrcweir 41cdf0e10cSrcweir ~ShareableMutex(); 42cdf0e10cSrcweir 43cdf0e10cSrcweir void acquire(); 44cdf0e10cSrcweir void release(); 45cdf0e10cSrcweir ::osl::Mutex& getShareableOslMutex(); 46cdf0e10cSrcweir 47cdf0e10cSrcweir private: 48cdf0e10cSrcweir struct MutexRef 49cdf0e10cSrcweir { MutexRefframework::ShareableMutex::MutexRef50cdf0e10cSrcweir MutexRef() : m_refCount(0) {} acquireframework::ShareableMutex::MutexRef51cdf0e10cSrcweir void acquire() 52cdf0e10cSrcweir { 53cdf0e10cSrcweir osl_incrementInterlockedCount( &m_refCount ); 54cdf0e10cSrcweir } 55cdf0e10cSrcweir releaseframework::ShareableMutex::MutexRef56cdf0e10cSrcweir void release() 57cdf0e10cSrcweir { 58cdf0e10cSrcweir if ( osl_decrementInterlockedCount( &m_refCount ) == 0 ) 59cdf0e10cSrcweir delete this; 60cdf0e10cSrcweir } 61cdf0e10cSrcweir 62cdf0e10cSrcweir oslInterlockedCount m_refCount; 63cdf0e10cSrcweir osl::Mutex m_oslMutex; 64cdf0e10cSrcweir }; 65cdf0e10cSrcweir 66cdf0e10cSrcweir MutexRef* pMutexRef; 67cdf0e10cSrcweir }; 68cdf0e10cSrcweir 69cdf0e10cSrcweir class ShareGuard 70cdf0e10cSrcweir { 71cdf0e10cSrcweir public: ShareGuard(ShareableMutex & rShareMutex)72cdf0e10cSrcweir ShareGuard( ShareableMutex& rShareMutex ) : 73cdf0e10cSrcweir m_rShareMutex( rShareMutex ) 74cdf0e10cSrcweir { 75cdf0e10cSrcweir m_rShareMutex.acquire(); 76cdf0e10cSrcweir } 77cdf0e10cSrcweir ~ShareGuard()78cdf0e10cSrcweir ~ShareGuard() 79cdf0e10cSrcweir { 80cdf0e10cSrcweir m_rShareMutex.release(); 81cdf0e10cSrcweir } 82cdf0e10cSrcweir 83cdf0e10cSrcweir private: 84cdf0e10cSrcweir ShareGuard(); 85cdf0e10cSrcweir ShareGuard& operator=( const ShareGuard& ); 86cdf0e10cSrcweir 87cdf0e10cSrcweir ShareableMutex& m_rShareMutex; 88cdf0e10cSrcweir }; 89cdf0e10cSrcweir 90cdf0e10cSrcweir } 91cdf0e10cSrcweir 92cdf0e10cSrcweir #endif // #ifndef __FRAMEWORK_HELPER_SHAREABLEMUTEX_HXX_ 93