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//
// Event_POSIX.cpp
//
// Library: Foundation
// Package: Threading
// Module: Event
//
// Copyright (c) 2004-2006, Applied Informatics Software Engineering GmbH.
// and Contributors.
//
// SPDX-License-Identifier: BSL-1.0
//
#include "Poco/Event_VX.h"
#include <sysLib.h>
namespace Poco {
EventImpl::EventImpl(bool autoReset): _auto(autoReset), _state(false)
{
_sem = semCCreate(SEM_Q_PRIORITY, 0);
if (_sem == 0)
throw Poco::SystemException("cannot create event");
}
EventImpl::~EventImpl()
{
semDelete(_sem);
}
void EventImpl::setImpl()
{
if (_auto)
{
if (semGive(_sem) != OK)
throw SystemException("cannot set event");
}
else
{
_state = true;
if (semFlush(_sem) != OK)
throw SystemException("cannot set event");
}
}
void EventImpl::resetImpl()
{
_state = false;
}
void EventImpl::waitImpl()
{
if (!_state)
{
if (semTake(_sem, WAIT_FOREVER) != OK)
throw SystemException("cannot wait for event");
}
}
bool EventImpl::waitImpl(long milliseconds)
{
if (!_state)
{
int ticks = milliseconds*sysClkRateGet()/1000;
return semTake(_sem, ticks) == OK;
}
else return true;
}
} // namespace Poco
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