FreeCAD

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/**************************************************************************\
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 * Copyright (c) Kongsberg Oil & Gas Technologies AS
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 * All rights reserved.
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 * 
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 * Redistribution and use in source and binary forms, with or without
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 * modification, are permitted provided that the following conditions are
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 * met:
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 * 
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 * Redistributions of source code must retain the above copyright notice,
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 * this list of conditions and the following disclaimer.
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 * 
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 * Redistributions in binary form must reproduce the above copyright
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 * notice, this list of conditions and the following disclaimer in the
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 * documentation and/or other materials provided with the distribution.
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 * 
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 * Neither the name of the copyright holder nor the names of its
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 * contributors may be used to endorse or promote products derived from
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 * this software without specific prior written permission.
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 * 
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 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
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 * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
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 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
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 * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
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 * HOLDER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
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 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
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 * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
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 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
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 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
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 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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\**************************************************************************/
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#include <QMutexLocker>
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#include "SignalThread.h"
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using namespace SIM::Coin3D::Quarter;
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SignalThread::SignalThread()
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  : isstopped(false)
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{
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}
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SignalThread::~SignalThread()
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{
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}
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void
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SignalThread::trigger()
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{
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  // lock first to make sure the QThread is actually waiting for a signal
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  QMutexLocker ml(&this->mutex);
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  this->waitcond.wakeOne();
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}
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void
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SignalThread::stopThread()
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{
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  QMutexLocker ml(&this->mutex);
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  this->isstopped = true;
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  this->waitcond.wakeOne();
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}
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void
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SignalThread::run()
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{
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  QMutexLocker ml(&this->mutex);
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  while (!this->isstopped) {
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    // just wait, and trigger every time we receive a signal
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    this->waitcond.wait(&this->mutex);
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    if (!this->isstopped) {
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      Q_EMIT triggerSignal();
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    }
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  }
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}
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