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/**************************************************************************
* @licence app begin@
*
* SPDX-License-Identifier: MPL-2.0
*
* \ingroup EnhancedPositionService
*
* \copyright Copyright (C) BMW Car IT GmbH 2011, 2012
*
* \license
* This Source Code Form is subject to the terms of the
* Mozilla Public License, v. 2.0. If a copy of the MPL was not distributed with
* this file, You can obtain one at http://mozilla.org/MPL/2.0/.
*
* @licence end@
**************************************************************************/
#include "signalhelper.h"
#include <QtCore/qcoreapplication.h>
static int setup_unix_signal_handlers()
{
struct sigaction hup, term;
hup.sa_handler = SignalHelper::hupSignalHandler;
sigemptyset(&hup.sa_mask);
hup.sa_flags = 0;
hup.sa_flags |= SA_RESTART;
if (sigaction(SIGHUP, &hup, 0) > 0)
return 1;
term.sa_handler = SignalHelper::termSignalHandler;
sigemptyset(&term.sa_mask);
term.sa_flags |= SA_RESTART;
if (sigaction(SIGTERM, &term, 0) > 0)
return 2;
return 0;
}
SignalHelper::SignalHelper(QObject *parent, const char *name)
: QObject(parent)
{
setup_unix_signal_handlers();
if (socketpair(AF_UNIX, SOCK_STREAM, 0, sighupFd))
qFatal("Couldn't create HUP socketpair");
if (socketpair(AF_UNIX, SOCK_STREAM, 0, sigtermFd))
qFatal("Couldn't create TERM socketpair");
snHup = new QSocketNotifier(sighupFd[1], QSocketNotifier::Read, this);
connect(snHup, SIGNAL(activated(int)), this, SLOT(handleSigHup()));
snTerm = new QSocketNotifier(sigtermFd[1], QSocketNotifier::Read, this);
connect(snTerm, SIGNAL(activated(int)), this, SLOT(handleSigTerm()));
}
SignalHelper::~SignalHelper()
{
}
void SignalHelper::hupSignalHandler(int)
{
char a = 1;
::write(sighupFd[0], &a, sizeof(a));
}
void SignalHelper::termSignalHandler(int)
{
char a = 1;
::write(sigtermFd[0], &a, sizeof(a));
}
void SignalHelper::handleSigTerm()
{
snTerm->setEnabled(false);
char tmp;
::read(sigtermFd[1], &tmp, sizeof(tmp));
// do Qt stuff
qDebug("terminate ...");
QCoreApplication::exit(0);
snTerm->setEnabled(true);
}
void SignalHelper::handleSigHup()
{
snHup->setEnabled(false);
char tmp;
::read(sighupFd[1], &tmp, sizeof(tmp));
// do Qt stuff
qDebug("handleSigHup");
snHup->setEnabled(true);
}
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