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71 lines
1.0 KiB
C++
71 lines
1.0 KiB
C++
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//
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// Mutex_VX.cpp
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//
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// $Id: //poco/1.4/Foundation/src/Mutex_VX.cpp#1 $
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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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// 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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#include "Poco/Mutex_VX.h"
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#include <sysLib.h>
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namespace Poco {
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MutexImpl::MutexImpl()
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{
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_sem = semMCreate(SEM_INVERSION_SAFE | SEM_Q_PRIORITY);
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if (_sem == 0)
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throw Poco::SystemException("cannot create mutex");
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}
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MutexImpl::MutexImpl(bool fast)
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{
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if (fast)
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{
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_sem = semBCreate(SEM_Q_PRIORITY, SEM_FULL);
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}
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else
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{
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_sem = semMCreate(SEM_INVERSION_SAFE | SEM_Q_PRIORITY);
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}
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if (_sem == 0)
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throw Poco::SystemException("cannot create mutex");
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}
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MutexImpl::~MutexImpl()
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{
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semDelete(_sem);
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}
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bool MutexImpl::tryLockImpl(long milliseconds)
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{
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int ticks = milliseconds*sysClkRateGet()/1000;
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return semTake(_sem, ticks) == OK;
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}
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FastMutexImpl::FastMutexImpl(): MutexImpl(true)
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{
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}
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FastMutexImpl::~FastMutexImpl()
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{
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}
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} // namespace Poco
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