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from __future__ import absolute_import
from twisted.internet import reactor
import signal
signal_names = {}
for signame in dir(signal):
if signame.startswith("SIG"):
signum = getattr(signal, signame)
if isinstance(signum, int):
signal_names[signum] = signame
def install_shutdown_handlers(function, override_sigint=True):
"""Install the given function as a signal handler for all common shutdown
signals (such as SIGINT, SIGTERM, etc). If override_sigint is ``False`` the
SIGINT handler won't be install if there is already a handler in place
(e.g. Pdb)
"""
reactor._handleSignals()
signal.signal(signal.SIGTERM, function)
if signal.getsignal(signal.SIGINT) == signal.default_int_handler or \
override_sigint:
signal.signal(signal.SIGINT, function)
# Catch Ctrl-Break in windows
if hasattr(signal, "SIGBREAK"):
signal.signal(signal.SIGBREAK, function)
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