/usr/lib/python3/dist-packages/pykka/gevent.py is in python3-pykka 1.2.1-3.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 | from __future__ import absolute_import
import sys
import gevent
import gevent.event
import gevent.queue
from pykka import Timeout
from pykka.actor import Actor
from pykka.future import Future
__all__ = [
'GeventActor',
'GeventFuture',
]
class GeventFuture(Future):
"""
:class:`GeventFuture` implements :class:`pykka.Future` for use with
:class:`GeventActor`.
It encapsulates a :class:`gevent.event.AsyncResult` object which may be
used directly, though it will couple your code with gevent.
"""
#: The encapsulated :class:`gevent.event.AsyncResult`
async_result = None
def __init__(self, async_result=None):
super(GeventFuture, self).__init__()
if async_result is not None:
self.async_result = async_result
else:
self.async_result = gevent.event.AsyncResult()
def get(self, timeout=None):
try:
return super(GeventFuture, self).get(timeout=timeout)
except NotImplementedError:
pass
try:
return self.async_result.get(timeout=timeout)
except gevent.Timeout as e:
raise Timeout(e)
def set(self, value=None):
assert not self.async_result.ready(), 'value has already been set'
self.async_result.set(value)
def set_exception(self, exc_info=None):
if isinstance(exc_info, BaseException):
exception = exc_info
else:
exc_info = exc_info or sys.exc_info()
exception = exc_info[1]
self.async_result.set_exception(exception)
class GeventActor(Actor):
"""
:class:`GeventActor` implements :class:`pykka.Actor` using the `gevent
<http://www.gevent.org/>`_ library. gevent is a coroutine-based Python
networking library that uses greenlet to provide a high-level synchronous
API on top of libevent event loop.
This is a very fast implementation, but as of gevent 0.13.x it does not
work in combination with other threads.
"""
@staticmethod
def _create_actor_inbox():
return gevent.queue.Queue()
@staticmethod
def _create_future():
return GeventFuture()
def _start_actor_loop(self):
gevent.Greenlet.spawn(self._actor_loop)
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