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//
// Mutex_VX.cpp
//
// Library: Foundation
// Package: Threading
// Module: Mutex
//
// Copyright (c) 2004-2011, Applied Informatics Software Engineering GmbH.
// and Contributors.
//
// SPDX-License-Identifier: BSL-1.0
//
#include "Poco/Mutex_VX.h"
#include <sysLib.h>
namespace Poco {
MutexImpl::MutexImpl()
{
_sem = semMCreate(SEM_INVERSION_SAFE | SEM_Q_PRIORITY);
if (_sem == 0)
throw Poco::SystemException("cannot create mutex");
}
MutexImpl::MutexImpl(bool fast)
{
if (fast)
{
_sem = semBCreate(SEM_Q_PRIORITY, SEM_FULL);
}
else
{
_sem = semMCreate(SEM_INVERSION_SAFE | SEM_Q_PRIORITY);
}
if (_sem == 0)
throw Poco::SystemException("cannot create mutex");
}
MutexImpl::~MutexImpl()
{
semDelete(_sem);
}
bool MutexImpl::tryLockImpl(long milliseconds)
{
int ticks = milliseconds*sysClkRateGet()/1000;
return semTake(_sem, ticks) == OK;
}
FastMutexImpl::FastMutexImpl(): MutexImpl(true)
{
}
FastMutexImpl::~FastMutexImpl()
{
}
} // namespace Poco
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