Mutex_WIN32.h
Go to the documentation of this file.00001 // 00002 // Mutex_WIN32.h 00003 // 00004 // $Id: //poco/1.3/Foundation/include/Poco/Mutex_WIN32.h#3 $ 00005 // 00006 // Library: Foundation 00007 // Package: Threading 00008 // Module: Mutex 00009 // 00010 // Definition of the MutexImpl and FastMutexImpl classes for WIN32. 00011 // 00012 // Copyright (c) 2004-2008, Applied Informatics Software Engineering GmbH. 00013 // and Contributors. 00014 // 00015 // Permission is hereby granted, free of charge, to any person or organization 00016 // obtaining a copy of the software and accompanying documentation covered by 00017 // this license (the "Software") to use, reproduce, display, distribute, 00018 // execute, and transmit the Software, and to prepare derivative works of the 00019 // Software, and to permit third-parties to whom the Software is furnished to 00020 // do so, all subject to the following: 00021 // 00022 // The copyright notices in the Software and this entire statement, including 00023 // the above license grant, this restriction and the following disclaimer, 00024 // must be included in all copies of the Software, in whole or in part, and 00025 // all derivative works of the Software, unless such copies or derivative 00026 // works are solely in the form of machine-executable object code generated by 00027 // a source language processor. 00028 // 00029 // THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR 00030 // IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, 00031 // FITNESS FOR A PARTICULAR PURPOSE, TITLE AND NON-INFRINGEMENT. IN NO EVENT 00032 // SHALL THE COPYRIGHT HOLDERS OR ANYONE DISTRIBUTING THE SOFTWARE BE LIABLE 00033 // FOR ANY DAMAGES OR OTHER LIABILITY, WHETHER IN CONTRACT, TORT OR OTHERWISE, 00034 // ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER 00035 // DEALINGS IN THE SOFTWARE. 00036 // 00037 00038 00039 #ifndef Foundation_Mutex_WIN32_INCLUDED 00040 #define Foundation_Mutex_WIN32_INCLUDED 00041 00042 00043 #include "Poco/Foundation.h" 00044 #include "Poco/Exception.h" 00045 #include "Poco/UnWindows.h" 00046 00047 00048 namespace Poco { 00049 00050 00051 class Foundation_API MutexImpl 00052 { 00053 protected: 00054 MutexImpl(); 00055 ~MutexImpl(); 00056 void lockImpl(); 00057 bool tryLockImpl(); 00058 bool tryLockImpl(long milliseconds); 00059 void unlockImpl(); 00060 00061 private: 00062 CRITICAL_SECTION _cs; 00063 }; 00064 00065 00066 typedef MutexImpl FastMutexImpl; 00067 00068 00069 // 00070 // inlines 00071 // 00072 inline void MutexImpl::lockImpl() 00073 { 00074 try 00075 { 00076 EnterCriticalSection(&_cs); 00077 } 00078 catch (...) 00079 { 00080 throw SystemException("cannot lock mutex"); 00081 } 00082 } 00083 00084 00085 inline bool MutexImpl::tryLockImpl() 00086 { 00087 try 00088 { 00089 return TryEnterCriticalSection(&_cs) == TRUE; 00090 } 00091 catch (...) 00092 { 00093 } 00094 throw SystemException("cannot lock mutex"); 00095 } 00096 00097 00098 inline void MutexImpl::unlockImpl() 00099 { 00100 LeaveCriticalSection(&_cs); 00101 } 00102 00103 00104 } // namespace Poco 00105 00106 00107 #endif // Foundation_Mutex_WIN32_INCLUDED