58 lines
1.5 KiB
Python
58 lines
1.5 KiB
Python
|
from __future__ import absolute_import
|
||
|
|
from __future__ import print_function
|
||
|
|
|
||
|
|
from zope.interface import implementer
|
||
|
|
|
||
|
|
from gevent._interfaces import ICallback
|
||
|
|
|
||
|
|
__all__ = [
|
||
|
|
'callback',
|
||
|
|
]
|
||
|
|
|
||
|
|
|
||
|
|
@implementer(ICallback)
|
||
|
|
class callback(object):
|
||
|
|
|
||
|
|
__slots__ = ('callback', 'args')
|
||
|
|
|
||
|
|
def __init__(self, cb, args):
|
||
|
|
self.callback = cb
|
||
|
|
self.args = args
|
||
|
|
|
||
|
|
def stop(self):
|
||
|
|
self.callback = None
|
||
|
|
self.args = None
|
||
|
|
|
||
|
|
close = stop
|
||
|
|
|
||
|
|
# Note that __nonzero__ and pending are different
|
||
|
|
# bool() is used in contexts where we need to know whether to schedule another callback,
|
||
|
|
# so it's true if it's pending or currently running
|
||
|
|
# 'pending' has the same meaning as libev watchers: it is cleared before actually
|
||
|
|
# running the callback
|
||
|
|
|
||
|
|
def __bool__(self):
|
||
|
|
# it's nonzero if it's pending or currently executing
|
||
|
|
# NOTE: This depends on loop._run_callbacks setting the args property
|
||
|
|
# to None.
|
||
|
|
return self.args is not None
|
||
|
|
|
||
|
|
@property
|
||
|
|
def pending(self):
|
||
|
|
return self.callback is not None
|
||
|
|
|
||
|
|
def _format(self):
|
||
|
|
return ''
|
||
|
|
|
||
|
|
def __repr__(self):
|
||
|
|
result = "<%s at 0x%x" % (self.__class__.__name__, id(self))
|
||
|
|
if self.pending:
|
||
|
|
result += " pending"
|
||
|
|
if self.callback is not None:
|
||
|
|
result += " callback=%r" % (self.callback, )
|
||
|
|
if self.args is not None:
|
||
|
|
result += " args=%r" % (self.args, )
|
||
|
|
if self.callback is None and self.args is None:
|
||
|
|
result += " stopped"
|
||
|
|
return result + ">"
|