[80] | 1 | // |
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| 2 | // Mutex_WIN32.h |
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| 3 | // |
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| 4 | // $Id: //poco/1.3/Foundation/include/Poco/Mutex_WIN32.h#4 $ |
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| 5 | // |
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| 6 | // Library: Foundation |
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| 7 | // Package: Threading |
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| 8 | // Module: Mutex |
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| 9 | // |
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| 10 | // Definition of the MutexImpl and FastMutexImpl classes for WIN32. |
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| 11 | // |
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| 12 | // Copyright (c) 2004-2008, Applied Informatics Software Engineering GmbH. |
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| 13 | // and Contributors. |
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| 14 | // |
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| 15 | // Permission is hereby granted, free of charge, to any person or organization |
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| 16 | // obtaining a copy of the software and accompanying documentation covered by |
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| 17 | // this license (the "Software") to use, reproduce, display, distribute, |
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| 18 | // execute, and transmit the Software, and to prepare derivative works of the |
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| 19 | // Software, and to permit third-parties to whom the Software is furnished to |
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| 20 | // do so, all subject to the following: |
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| 21 | // |
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| 22 | // The copyright notices in the Software and this entire statement, including |
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| 23 | // the above license grant, this restriction and the following disclaimer, |
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| 24 | // must be included in all copies of the Software, in whole or in part, and |
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| 25 | // all derivative works of the Software, unless such copies or derivative |
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| 26 | // works are solely in the form of machine-executable object code generated by |
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| 27 | // a source language processor. |
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| 28 | // |
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| 29 | // THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR |
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| 30 | // IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, |
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| 31 | // FITNESS FOR A PARTICULAR PURPOSE, TITLE AND NON-INFRINGEMENT. IN NO EVENT |
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| 32 | // SHALL THE COPYRIGHT HOLDERS OR ANYONE DISTRIBUTING THE SOFTWARE BE LIABLE |
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| 33 | // FOR ANY DAMAGES OR OTHER LIABILITY, WHETHER IN CONTRACT, TORT OR OTHERWISE, |
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| 34 | // ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER |
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| 35 | // DEALINGS IN THE SOFTWARE. |
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| 36 | // |
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| 37 | |
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| 38 | |
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| 39 | #ifndef Foundation_Mutex_WIN32_INCLUDED |
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| 40 | #define Foundation_Mutex_WIN32_INCLUDED |
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| 41 | |
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| 42 | |
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| 43 | #include "Poco/Foundation.h" |
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| 44 | #include "Poco/Exception.h" |
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| 45 | #include "Poco/UnWindows.h" |
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| 46 | |
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| 47 | |
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| 48 | namespace Poco { |
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| 49 | |
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| 50 | |
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| 51 | class Foundation_API MutexImpl |
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| 52 | { |
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| 53 | protected: |
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| 54 | MutexImpl(); |
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| 55 | ~MutexImpl(); |
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| 56 | void lockImpl(); |
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| 57 | bool tryLockImpl(); |
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| 58 | bool tryLockImpl(long milliseconds); |
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| 59 | void unlockImpl(); |
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| 60 | |
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| 61 | private: |
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| 62 | CRITICAL_SECTION _cs; |
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| 63 | }; |
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| 64 | |
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| 65 | |
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| 66 | typedef MutexImpl FastMutexImpl; |
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| 67 | |
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| 68 | |
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| 69 | // |
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| 70 | // inlines |
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| 71 | // |
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| 72 | inline void MutexImpl::lockImpl() |
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| 73 | { |
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| 74 | try |
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| 75 | { |
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| 76 | EnterCriticalSection(&_cs); |
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| 77 | } |
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| 78 | catch (...) |
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| 79 | { |
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| 80 | throw SystemException("cannot lock mutex"); |
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| 81 | } |
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| 82 | } |
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| 83 | |
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| 84 | |
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| 85 | inline bool MutexImpl::tryLockImpl() |
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| 86 | { |
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| 87 | try |
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| 88 | { |
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| 89 | return TryEnterCriticalSection(&_cs) != 0; |
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| 90 | } |
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| 91 | catch (...) |
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| 92 | { |
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| 93 | } |
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| 94 | throw SystemException("cannot lock mutex"); |
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| 95 | } |
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| 96 | |
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| 97 | |
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| 98 | inline void MutexImpl::unlockImpl() |
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| 99 | { |
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| 100 | LeaveCriticalSection(&_cs); |
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| 101 | } |
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| 102 | |
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| 103 | |
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| 104 | } // namespace Poco |
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| 105 | |
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| 106 | |
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| 107 | #endif // Foundation_Mutex_WIN32_INCLUDED |
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