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81 lines
2.4 KiB
C++
81 lines
2.4 KiB
C++
//
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// NamedMutex_UNIX.h
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//
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// $Id: //poco/Main/Foundation/include/Poco/NamedMutex_UNIX.h#2 $
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//
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// Library: Foundation
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// Package: Processes
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// Module: NamedMutex
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//
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// Definition of the NamedMutexImpl class for Unix.
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//
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// Copyright (c) 2004-2006, Applied Informatics Software Engineering GmbH.
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// and Contributors.
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//
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// Permission is hereby granted, free of charge, to any person or organization
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// obtaining a copy of the software and accompanying documentation covered by
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// this license (the "Software") to use, reproduce, display, distribute,
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// execute, and transmit the Software, and to prepare derivative works of the
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// Software, and to permit third-parties to whom the Software is furnished to
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// do so, all subject to the following:
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//
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// The copyright notices in the Software and this entire statement, including
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// the above license grant, this restriction and the following disclaimer,
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// must be included in all copies of the Software, in whole or in part, and
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// all derivative works of the Software, unless such copies or derivative
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// works are solely in the form of machine-executable object code generated by
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// a source language processor.
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//
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// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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// FITNESS FOR A PARTICULAR PURPOSE, TITLE AND NON-INFRINGEMENT. IN NO EVENT
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// SHALL THE COPYRIGHT HOLDERS OR ANYONE DISTRIBUTING THE SOFTWARE BE LIABLE
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// FOR ANY DAMAGES OR OTHER LIABILITY, WHETHER IN CONTRACT, TORT OR OTHERWISE,
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// ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
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// DEALINGS IN THE SOFTWARE.
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//
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#ifndef Foundation_NamedMutex_UNIX_INCLUDED
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#define Foundation_NamedMutex_UNIX_INCLUDED
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#include "Poco/Foundation.h"
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#include <sys/types.h>
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#include <sys/stat.h>
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#if defined(sun) || defined(__APPLE__) || defined(__osf__) || defined(__QNX__)
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#include <semaphore.h>
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#endif
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namespace Poco {
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class Foundation_API NamedMutexImpl
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{
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protected:
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NamedMutexImpl(const std::string& name);
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~NamedMutexImpl();
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void lockImpl();
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bool tryLockImpl();
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void unlockImpl();
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private:
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std::string getFileName();
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std::string _name;
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#if defined(sun) || defined(__APPLE__) || defined(__osf__) || defined(__QNX__)
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sem_t* _sem;
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#else
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int _lockfd; // lock file descriptor
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int _semfd; // file used to identify semaphore
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int _semid; // semaphore id
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#endif
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};
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} // namespace Poco
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#endif // Foundation_NamedMutex_UNIX_INCLUDED
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