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kqueue timers don't work properly #51726

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hasan mannequin opened this issue Dec 11, 2009 · 3 comments
Closed

kqueue timers don't work properly #51726

hasan mannequin opened this issue Dec 11, 2009 · 3 comments
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stdlib Python modules in the Lib dir type-bug An unexpected behavior, bug, or error

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@hasan
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Mannequin

hasan mannequin commented Dec 11, 2009

BPO 7477

Note: these values reflect the state of the issue at the time it was migrated and might not reflect the current state.

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GitHub fields:

assignee = None
closed_at = <Date 2009-12-11.21:53:52.635>
created_at = <Date 2009-12-11.12:08:49.935>
labels = ['type-bug', 'library']
title = "kqueue timers don't work properly"
updated_at = <Date 2009-12-11.21:53:52.634>
user = 'https://bugs.python.org/hasan'

bugs.python.org fields:

activity = <Date 2009-12-11.21:53:52.634>
actor = 'hasan'
assignee = 'none'
closed = True
closed_date = <Date 2009-12-11.21:53:52.635>
closer = 'hasan'
components = ['Library (Lib)']
creation = <Date 2009-12-11.12:08:49.935>
creator = 'hasan'
dependencies = []
files = []
hgrepos = []
issue_num = 7477
keywords = []
message_count = 3.0
messages = ['96247', '96250', '96274']
nosy_count = 1.0
nosy_names = ['hasan']
pr_nums = []
priority = 'normal'
resolution = None
stage = None
status = 'closed'
superseder = None
type = 'behavior'
url = 'https://bugs.python.org/issue7477'
versions = ['Python 2.6']
@hasan
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hasan mannequin commented Dec 11, 2009

kqueue timers are not working at all on Mac OSX 10.6.1 (probably not
working on other BSDs as well but haven't tested it).

Here's a simply repro:

from select import *
kq = kqueue()
e = kevent(10000, flags=KQ_EV_ENABLE|KQ_EV_ONESHOT, 
filter=KQ_FILTER_TIMER)
e
<select.kevent ident=10000 filter=-7 flags=0x14 fflags=0x0 data=0x0 
udata=0x0>
new_e = f.control([e], 1, 0)

This should block 10s before it returns control with new_e having a timer
event returned. However, it isn't the case.
control returns immediately returning a busted event:
[<select.kevent ident=10000 filter=-7 flags=0x4000 fflags=0x0 data=0x2
udata=0x0>]

Am I missing something?

@hasan hasan mannequin added stdlib Python modules in the Lib dir type-bug An unexpected behavior, bug, or error labels Dec 11, 2009
@hasan
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hasan mannequin commented Dec 11, 2009

Typo in the repro.

The statement:
new_e = f.control
should be:
new_e = kq.control

@hasan
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hasan mannequin commented Dec 11, 2009

Closing it. My mistake. I was passing incorrect arguments. KQ_EV_ONESHOT
requires KQ_EV_ADD as well, and timer data goes into data.

@hasan hasan mannequin closed this as completed Dec 11, 2009
@ezio-melotti ezio-melotti transferred this issue from another repository Apr 10, 2022
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