dolphin/Source/Core/DolphinQt/QtUtils/SignalDaemon.cpp

60 lines
1.3 KiB
C++

// Copyright 2018 Dolphin Emulator Project
// SPDX-License-Identifier: GPL-2.0-or-later
#include "DolphinQt/QtUtils/SignalDaemon.h"
#include <sys/socket.h>
#include <sys/types.h>
#include <unistd.h>
#include <QSocketNotifier>
int SignalDaemon::s_sigterm_fd[2];
static constexpr char message[] =
"\nA signal was received. A second signal will force Dolphin to stop.\n";
SignalDaemon::SignalDaemon(QObject* parent) : QObject(parent)
{
if (socketpair(AF_UNIX, SOCK_STREAM, 0, s_sigterm_fd))
qFatal("Couldn't create TERM socketpair");
m_term = new QSocketNotifier(s_sigterm_fd[1], QSocketNotifier::Read, this);
connect(m_term, &QSocketNotifier::activated, this, &SignalDaemon::OnNotifierActivated);
}
SignalDaemon::~SignalDaemon()
{
close(s_sigterm_fd[0]);
close(s_sigterm_fd[1]);
}
void SignalDaemon::OnNotifierActivated()
{
m_term->setEnabled(false);
char tmp;
if (read(s_sigterm_fd[1], &tmp, sizeof(char)) != sizeof(char))
{
// Not much we can do here.
}
m_term->setEnabled(true);
emit InterruptReceived();
}
void SignalDaemon::HandleInterrupt(int)
{
if (write(STDERR_FILENO, message, sizeof(message)) != sizeof(message))
{
// Not much we can do here.
}
char a = 1;
if (write(s_sigterm_fd[0], &a, sizeof(a)) != sizeof(a))
{
// Not much we can do here.
}
}