def main():
global abort
daemon = Pyro4.Daemon()
server = Pyro4.Proxy("PYRONAME:example.deadlock")
bounceObj = bouncer.Bouncer("Client")
daemon.register(bounceObj) # callback object
# register callback on the server
server.register(bounceObj)
# Now register server as 'callback' on the bounce object in this client
# note: we're using the same proxy here as the main program!
# This is the main cause of the deadlock, because this proxy will already
# be engaged in a call when the callback object here wants to use it as well.
# One solution could be to use a new proxy from inside the callback object, like this:
# server2 = server.__copy__()
# bounceObj.register(server2)
bounceObj.register(server)
# create a thread that handles callback requests
thread = threading.Thread(target=PyroLoop, args=(daemon, ))
thread.setDaemon(True)
thread.start()
print("This bounce example will deadlock!")
print("Read the source or Readme.txt for more info why this is the case!")
print("Calling server...")
result = server.process(["hello"])
print(
"Result=", result
) # <--- you will never see this, it will deadlock in the previous call
def main():
global abort
Pyro.core.initServer()
Pyro.core.initClient()
daemon = Pyro.core.Daemon()
NS = Pyro.naming.NameServerLocator().getNS()
daemon.useNameServer(NS)
bounceObj = bouncer.Bouncer("Client")
daemon.connect(bounceObj) # callback object
server = NS.resolve(':test.bouncer').getProxy()
# create a thread that handles callback requests
thread=Thread(target=PyroLoop, args=(daemon,))
thread.start()
print 'Calling server from main (a single call)...'
result = server.process(["hello"], bounceObj.getProxy())
print 'Result=',result
abort=1
thread.join()
print 'Exiting.'
from __future__ import print_function
import Pyro4
import bouncer
# you could set a comm timeout to avoid the deadlock situation...:
# Pyro4.config.COMMTIMEOUT = 2
with Pyro4.Daemon() as daemon:
uri = daemon.register(bouncer.Bouncer("Server"))
Pyro4.locateNS().register("example.deadlock", uri)
print("This bounce example will deadlock!")
print("Read the source or Readme.txt for more info why this is the case!")
print("Bouncer started.")
daemon.requestLoop()
#!/usr/bin/env python
import Pyro.naming
import Pyro.core
from Pyro.errors import NamingError
import bouncer
Pyro.core.initServer()
daemon = Pyro.core.Daemon()
ns = Pyro.naming.NameServerLocator().getNS()
daemon.useNameServer(ns)
try:
ns.createGroup(':test')
except NamingError:
pass
daemon.connect(bouncer.Bouncer('Server'),':test.bouncer')
# enter the service loop.
print 'Bouncer started'
daemon.requestLoop()