def setup_unix_signals(self):
import fcntl
read_fd, write_fd = os.pipe()
cloexec_flag = getattr(fcntl, 'FD_CLOEXEC', 1)
for fd in (read_fd, write_fd):
flags = fcntl.fcntl(fd, fcntl.F_GETFD)
fcntl.fcntl(fd, fcntl.F_SETFD, flags | cloexec_flag | os.O_NONBLOCK)
for sig in (signal.SIGINT, signal.SIGTERM):
signal.signal(sig, lambda x, y: None)
signal.siginterrupt(sig, False)
signal.set_wakeup_fd(write_fd)
self.signal_notifier = QSocketNotifier(read_fd, QSocketNotifier.Read, self)
self.signal_notifier.setEnabled(True)
self.signal_notifier.activated.connect(self.signal_received, type=Qt.QueuedConnection)
def handle_unix_signals(self):
if iswindows:
# TODO: test this on windows
self.signal_read_socket, self.signal_write_socket = socket.socketpair(
)
self.signal_read_socket.setblocking(False)
self.signal_write_socket.setblocking(False)
read_fd, write_fd = self.signal_read_socket.fileno(
), self.signal_write_socket.fileno()
else:
read_fd, write_fd = os.pipe2(os.O_NONBLOCK | os.O_CLOEXEC)
for sig in (signal.SIGINT, signal.SIGTERM):
signal.signal(sig, lambda x, y: None)
signal.siginterrupt(sig, False)
signal.set_wakeup_fd(write_fd)
self.signal_notifier = QSocketNotifier(read_fd, QSocketNotifier.Read,
self)
self.signal_notifier.setEnabled(True)
self.signal_notifier.activated.connect(self.signal_received,
type=Qt.QueuedConnection)
