1 files changed, 149 insertions, 0 deletions
diff --git a/basicsuite/datacollector/unixsignalhandler.cpp b/basicsuite/datacollector/unixsignalhandler.cpp
new file mode 100644
index 0000000..61fd87b
--- /dev/null
+++ b/basicsuite/datacollector/unixsignalhandler.cpp
@@ -0,0 +1,149 @@
+/****************************************************************************
+**
+** Copyright (C) 2017 The Qt Company Ltd.
+** Contact: http://www.qt.io/licensing/
+**
+** This file is part of the E-Bike demo project.
+**
+** $QT_BEGIN_LICENSE:LGPL3$
+** Commercial License Usage
+** Licensees holding valid commercial Qt 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 http://www.qt.io/terms-conditions. For further
+** information use the contact form at http://www.qt.io/contact-us.
+**
+** GNU Lesser General Public License Usage
+** Alternatively, this file may be used under the terms of the GNU Lesser
+** General Public License version 3 as published by the Free Software
+** Foundation and appearing in the file LICENSE.LGPLv3 included in the
+** packaging of this file. Please review the following information to
+** ensure the GNU Lesser General Public License version 3 requirements
+** will be met: https://www.gnu.org/licenses/lgpl.html.
+**
+** GNU General Public License Usage
+** Alternatively, this file may be used under the terms of the GNU
+** General Public License version 2.0 or later 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 the GNU General Public License version 2.0 requirements will be
+** met: http://www.gnu.org/licenses/gpl-2.0.html.
+**
+** $QT_END_LICENSE$
+**
+****************************************************************************/
+
+#include <QSocketNotifier>
+#include <signal.h>
+#include <sys/socket.h>
+#include <unistd.h>
+#include "unixsignalhandler.h"
+
+int UnixSignalHandler::sigintFd[2] = {0};
+int UnixSignalHandler::sighupFd[2] = {0};
+int UnixSignalHandler::sigtermFd[2] = {0};
+
+UnixSignalHandler::UnixSignalHandler(QObject *parent)
+    : QObject(parent)
+{
+    if (::socketpair(AF_UNIX, SOCK_STREAM, 0, sigintFd))
+       qFatal("Couldn't create INT socketpair");
+
+    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");
+
+    m_sigintNotifier = new QSocketNotifier(sigintFd[1], QSocketNotifier::Read, this);
+    connect(m_sigintNotifier, &QSocketNotifier::activated,
+            this, &UnixSignalHandler::handleSigInt);
+    m_sighupNotifier = new QSocketNotifier(sighupFd[1], QSocketNotifier::Read, this);
+    connect(m_sighupNotifier, &QSocketNotifier::activated,
+            this, &UnixSignalHandler::handleSigHup);
+    m_sigtermNotifier = new QSocketNotifier(sigtermFd[1], QSocketNotifier::Read, this);
+    connect(m_sigtermNotifier, &QSocketNotifier::activated,
+            this, &UnixSignalHandler::handleSigTerm);
+}
+
+int UnixSignalHandler::setupSignalHandlers()
+{
+    struct sigaction sig_int, sig_hup, sig_term;
+
+    sig_int.sa_handler = UnixSignalHandler::sigIntHandler;
+    sigemptyset(&sig_int.sa_mask);
+    sig_int.sa_flags = 0;
+    sig_int.sa_flags |= SA_RESTART;
+
+    if (sigaction(SIGINT, &sig_int, 0))
+       return 1;
+
+    sig_hup.sa_handler = UnixSignalHandler::sigHupHandler;
+    sigemptyset(&sig_hup.sa_mask);
+    sig_hup.sa_flags = 0;
+    sig_hup.sa_flags |= SA_RESTART;
+
+    if (sigaction(SIGHUP, &sig_hup, 0))
+       return 2;
+
+    sig_term.sa_handler = UnixSignalHandler::sigTermHandler;
+    sigemptyset(&sig_term.sa_mask);
+    sig_term.sa_flags |= SA_RESTART;
+
+    if (sigaction(SIGTERM, &sig_term, 0))
+       return 3;
+
+    return 0;
+}
+
+void UnixSignalHandler::sigIntHandler(int)
+{
+    char a = 1;
+    ::write(sigintFd[0], &a, sizeof(a));
+}
+
+void UnixSignalHandler::sigHupHandler(int)
+{
+    char a = 1;
+    ::write(sighupFd[0], &a, sizeof(a));
+}
+
+void UnixSignalHandler::sigTermHandler(int)
+{
+    char a = 1;
+    ::write(sigtermFd[0], &a, sizeof(a));
+}
+
+void UnixSignalHandler::handleSigInt()
+{
+    m_sigintNotifier->setEnabled(false);
+    char tmp;
+    ::read(sigintFd[1], &tmp, sizeof(tmp));
+
+    emit sigInt();
+
+    m_sigintNotifier->setEnabled(true);
+}
+
+void UnixSignalHandler::handleSigHup()
+{
+    m_sighupNotifier->setEnabled(false);
+    char tmp;
+    ::read(sighupFd[1], &tmp, sizeof(tmp));
+
+    emit sigHup();
+
+    m_sighupNotifier->setEnabled(true);
+}
+
+void UnixSignalHandler::handleSigTerm()
+{
+    m_sigtermNotifier->setEnabled(false);
+    char tmp;
+    ::read(sigtermFd[1], &tmp, sizeof(tmp));
+
+    emit sigTerm();
+
+    m_sigtermNotifier->setEnabled(true);
+}