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From "Justin Ross (JIRA)" <j...@apache.org>
Subject [jira] [Updated] (PROTON-1709) [python] ApplicationEvent causing memory growth
Date Wed, 02 May 2018 22:28:00 GMT

     [ https://issues.apache.org/jira/browse/PROTON-1709?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]

Justin Ross updated PROTON-1709:
--------------------------------
    Summary: [python] ApplicationEvent causing memory growth  (was: Python binding: ApplicationEvent
causing memory growth)

> [python] ApplicationEvent causing memory growth
> -----------------------------------------------
>
>                 Key: PROTON-1709
>                 URL: https://issues.apache.org/jira/browse/PROTON-1709
>             Project: Qpid Proton
>          Issue Type: Bug
>          Components: python-binding
>    Affects Versions: proton-c-0.18.1
>            Reporter: Xin Chen
>            Assignee: Justin Ross
>            Priority: Major
>              Labels: leak
>
> ApplicationEvent creates a new EventType object in the constructor. The EventType object
adds itself to the TYPES dict always, even for the same typename. There is no way for the
application to avoid this by providing an EventType object directly. Repro code below:
> {code:java}
> import threading
> from proton.reactor import Container, ApplicationEvent, EventInjector
> class Program:
>     def __init__(self, injector):
>         self.injector = injector
>     def on_reactor_init(self, event):
>         event.reactor.selectable(self.injector)
>     def on_hello(self, event):
>         print(event.subject)
>     def on_done(self, event):
>         event.subject.stop()
> e = EventInjector()
> r = Container(Program(e))
> t = threading.Thread(target=r.run)
> t.start()
> for i in range(1, 10000000):
>     e.trigger(ApplicationEvent("hello", subject=str(i)))
> e.trigger(ApplicationEvent("done", subject=r))
> t.join()
> {code}



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