# uncompyle6 version 3.9.2
# Python bytecode version base 3.7.0 (3394)
# Decompiled from: Python 3.8.19 (default, Mar 20 2024, 15:27:52) 
# [Clang 14.0.6 ]
# Embedded file name: /var/user/app/device_supervisorbak/device_supervisor/lib/libevent.py
# Compiled at: 2024-04-18 03:12:55
# Size of source mod 2**32: 1321 bytes
from _libevent import *
import weakref

class Timer(Event):
    __doc__ = "Simplified class for timers."
    __slots__ = "_callback"

    def __init__(self, base, callback, userdata=None):
        if not callable(callback):
            raise TypeError("the callback must be callable")

        def _fire(evt, fd, what, userdata, selfref=weakref.ref(self)):
            """Special internal class to prevent circular references."""
            self = selfref()
            if self is not None:
                self._callback(self, userdata)

        super(Timer, self).__init__(base, -1, 0, _fire, userdata)
        self._callback = callback


class Signal(Event):
    __doc__ = "Simplified class for signals."
    __slots__ = "_callback"

    def __init__(self, base, signum, callback, userdata=None):
        if not callable(callback):
            raise TypeError("the callback must be callable")

        def _fire(evt, fd, what, userdata, selfref=weakref.ref(self)):
            """Special internal class to prevent circular references."""
            self = selfref()
            if self is not None:
                self._callback(self, fd, userdata)

        super(Signal, self).__init__(base, signum, EV_SIGNAL | EV_PERSIST, _fire, userdata)
        self._callback = callback