Viewing file:  signals.py (953 B) -rw-r--r--
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from __future__ import absolute_import
from __future__ import unicode_literals
import signal
from ..const import IS_WINDOWS_PLATFORM
class ShutdownException(Exception):
pass
class HangUpException(Exception):
pass
def shutdown(signal, frame):
raise ShutdownException()
def set_signal_handler(handler):
signal.signal(signal.SIGINT, handler)
signal.signal(signal.SIGTERM, handler)
def set_signal_handler_to_shutdown():
set_signal_handler(shutdown)
def hang_up(signal, frame):
raise HangUpException()
def set_signal_handler_to_hang_up():
# on Windows a ValueError will be raised if trying to set signal handler for SIGHUP
if not IS_WINDOWS_PLATFORM:
signal.signal(signal.SIGHUP, hang_up)
def ignore_sigpipe():
# Restore default behavior for SIGPIPE instead of raising
# an exception when encountered.
if not IS_WINDOWS_PLATFORM:
signal.signal(signal.SIGPIPE, signal.SIG_DFL)
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