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/****************************************************************************
**
** Copyright (C) 2019 Luxoft Sweden AB
** Copyright (C) 2018 Pelagicore AG
** Contact: https://www.qt.io/licensing/
**
** This file is part of the Luxoft Application Manager.
**
** $QT_BEGIN_LICENSE:GPL-EXCEPT-QTAS$
** Commercial License Usage
** Licensees holding valid commercial Qt Automotive Suite licenses may use
** this file in accordance with the commercial license agreement provided
** with the Software or, alternatively, in accordance with the terms
** contained in a written agreement between you and The Qt Company. For
** licensing terms and conditions see https://www.qt.io/terms-conditions.
** For further information use the contact form at https://www.qt.io/contact-us.
**
** GNU General Public License Usage
** Alternatively, this file may be used under the terms of the GNU
** General Public License version 3 as published by the Free Software
** Foundation with exceptions as appearing in the file LICENSE.GPL3-EXCEPT
** included in the packaging of this file. Please review the following
** information to ensure the GNU General Public License requirements will
** be met: https://www.gnu.org/licenses/gpl-3.0.html.
**
** $QT_END_LICENSE$
**
****************************************************************************/
#include <QThread>
#include <QCoreApplication>
#include "interrupthandler.h"
#include "unixsignalhandler.h"
#if defined(Q_OS_UNIX)
# include <sys/poll.h>
# define AM_SIGNALS { SIGTERM, SIGINT, SIGPIPE, SIGHUP }
#else
# define AM_SIGNALS { SIGTERM, SIGINT }
#endif
QT_BEGIN_NAMESPACE_AM
#if defined(POLLRDHUP)
// ssh does not forward Ctrl+C, but we can detect a hangup condition on stdin
class HupThread : public QThread // clazy:exclude=missing-qobject-macro
{
public:
HupThread(QCoreApplication *parent)
: QThread(parent)
{
connect(parent, &QCoreApplication::aboutToQuit, this, [this]() {
if (isRunning()) {
terminate();
wait();
}
});
}
void run() override
{
while (true) {
struct pollfd pfd = { 0, POLLRDHUP, 0 };
int res = poll(&pfd, 1, -1);
if (res == 1 && pfd.revents & POLLHUP) {
kill(getpid(), SIGHUP);
return;
}
}
}
};
#endif // defined(POLLRDHUP)
void InterruptHandler::install(const std::function<void (int)> &handler)
{
static bool once = false;
if (!once) {
#if defined(POLLRDHUP)
(new HupThread(qApp))->start();
#endif
once = true;
}
// on Ctrl+C or SIGTERM -> stop the application
UnixSignalHandler::instance()->resetToDefault(AM_SIGNALS);
UnixSignalHandler::instance()->install(UnixSignalHandler::ForwardedToEventLoopHandler,
AM_SIGNALS, handler);
}
QT_END_NAMESPACE_AM
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