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Robbie Gemmell commented on PROTON-1071: ---------------------------------------- [~cliffjansen] what is the status on this? Done? Bump to 0.13.0? Other? > EventInjector hangs on Windows > ------------------------------ > > Key: PROTON-1071 > URL: https://issues.apache.org/jira/browse/PROTON-1071 > Project: Qpid Proton > Issue Type: Bug > Components: proton-c, python-binding > Affects Versions: 0.11.0 > Environment: Windows > Reporter: Ken Giusti > Assignee: Cliff Jansen > Fix For: 0.12.0 > > > I added a new reactor test that exercises the python-proton ApplicationEvent > and EventInjector classes: > proton_tests.reactor.ApplicationEventTest.test_application_events > See tests/python/proton_tests/reactor.py > This test passes on linux, but hangs when run on Windows. > Poking around a bit, I suspect the problem may be in the Windows selector > code. Description: > The EventInjector/ApplicationEvent classes provide a way to trigger events > from threads external to the reactor main loop. See > proton-c/bindings/python/proton/reactor.py. A pipe is used to wake up the > reactor when a new event is sent to the reactor (see reactor.py in the python > bindings). The EventInjector's trigger method puts the event on a queue and > writes to a pipe to wake up the reactor. The on_selectable_readable callback > in the EventInjector is called on the reactor thread to get the event off the > queue and clear the pipe. > On windows it appears as if the EventInjector selectable is made "readable" > even though nothing has been written to the pipe. This causes the os.read() > call in the on_selectable_readable() callback to hang. > Best I can tell the windows selector code doesn't work properly with a pipe. > The pn_selector_next() function is returning a read event on the pipe's read > descriptor even though the pipe is empty. But I'm not familiar with the > window's selector implementation, so this is a best guess. -- This message was sent by Atlassian JIRA (v6.3.4#6332)