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/****************************************************************************
**
** Copyright (C) 2015 The Qt Company Ltd.
** Contact: http://www.qt.io/licensing/
**
** This file is part of the jom project on Trolltech Labs.
**
** This file may be used under the terms of the GNU General Public
** License version 2.0 or 3.0 as published by the Free Software Foundation
** and appearing in the file LICENSE.GPL included in the packaging of
** this file. Please review the following information to ensure GNU
** General Public Licensing requirements will be met:
** http://www.fsf.org/licensing/licenses/info/GPLv2.html and
** http://www.gnu.org/copyleft/gpl.html.
**
** This file is provided AS IS with NO WARRANTY OF ANY KIND, INCLUDING THE
** WARRANTY OF DESIGN, MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE.
**
****************************************************************************/
#include "jobserver.h"
#include "filetime.h"
#include "helperfunctions.h"
#include <QByteArray>
#include <QCoreApplication>
#include <QSystemSemaphore>
namespace NMakeFile {
JobServer::JobServer(ProcessEnvironment *environment)
: m_semaphore(0)
, m_environment(environment)
{
}
JobServer::~JobServer()
{
delete m_semaphore;
}
bool JobServer::start(int maxNumberOfJobs)
{
Q_ASSERT(m_environment);
const uint randomId = (FileTime::currentTime().internalRepresentation() % UINT_MAX)
^ reinterpret_cast<uint>(&maxNumberOfJobs);
const QString semaphoreKey = QLatin1String("jomsrv-")
+ QString::number(QCoreApplication::applicationPid()) + QLatin1Char('-')
+ QString::number(randomId);
m_semaphore = new QSystemSemaphore(semaphoreKey, maxNumberOfJobs - 1, QSystemSemaphore::Create);
if (m_semaphore->error() != QSystemSemaphore::NoError) {
setError(m_semaphore->errorString());
return false;
}
m_environment->insert(QLatin1String("_JOMSRVKEY_"), semaphoreKey);
m_environment->insert(QLatin1String("_JOMJOBCOUNT_"), QString::number(maxNumberOfJobs));
return true;
}
QString JobServer::errorString() const
{
return m_errorString;
}
void JobServer::setError(const QString &errorMessage)
{
m_errorString = errorMessage;
}
} // namespace NMakeFile
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