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81 lines
1.2 KiB
C++
81 lines
1.2 KiB
C++
//
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// Mutex_VX.h
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//
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// Library: Foundation
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// Package: Threading
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// Module: Mutex
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//
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// Definition of the MutexImpl and FastMutexImpl classes for VxWorks.
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//
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// Copyright (c) 2004-2011, Applied Informatics Software Engineering GmbH.
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// and Contributors.
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//
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// SPDX-License-Identifier: BSL-1.0
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//
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#ifndef Foundation_Mutex_VX_INCLUDED
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#define Foundation_Mutex_VX_INCLUDED
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#include "Poco/Foundation.h"
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#include "Poco/Exception.h"
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#include <semLib.h>
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#include <errno.h>
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namespace Poco {
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class Foundation_API MutexImpl
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{
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protected:
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MutexImpl();
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MutexImpl(bool fast);
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~MutexImpl();
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void lockImpl();
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bool tryLockImpl();
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bool tryLockImpl(long milliseconds);
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void unlockImpl();
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private:
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SEM_ID _sem;
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};
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class Foundation_API FastMutexImpl: public MutexImpl
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{
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protected:
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FastMutexImpl();
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~FastMutexImpl();
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};
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//
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// inlines
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//
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inline void MutexImpl::lockImpl()
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{
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if (semTake(_sem, WAIT_FOREVER) != OK)
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throw SystemException("cannot lock mutex");
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}
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inline bool MutexImpl::tryLockImpl()
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{
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return semTake(_sem, NO_WAIT) == OK;
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}
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inline void MutexImpl::unlockImpl()
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{
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if (semGive(_sem) != OK)
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throw SystemException("cannot unlock mutex");
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}
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} // namespace Poco
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#endif // Foundation_Mutex_VX_INCLUDED
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