[issue4106] multiprocessing occasionally spits out exception during shutdown

[Skip Montanaro]

Skip Montanaro <[EMAIL PROTECTED]> added the comment:

Got another one just now, but with just the note about the exception
in the queue feeder thread.  The traceback was swallowed.

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[issue4106] multiprocessing occasionally spits out exception during shutdown

[Skip Montanaro]

Skip Montanaro <[EMAIL PROTECTED]> added the comment:

Final comment before I see some feedback from the experts.

I have this code in the worker function's loop:

# quick pause to allow other stuff to happen a bit randomly
t = 0.1 * random.random()
time.sleep(t)

If I eliminate the sleep altogether pretty much all hell breaks loose.
As I reduce the sleep time it gets noisier and noisier.  I switched to
a fixed sleep time and reduced it as far as

time.sleep(0.00015625)

At that point it was complaining about killing worker processes on
many of the runs, maybe 1 out of every 5 or 10 runs.

I suppose the moral of the story is to not use multiprocessing except
when you have long-running tasks.

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[issue4032] distutils cannot recognize ".dll.a" as library on cygwin

[Hirokazu Yamamoto]

Changes by Hirokazu Yamamoto <[EMAIL PROTECTED]>:


--
title: disutils cannot recognize ".dll.a" as library on cygwin -> distutils 
cannot recognize ".dll.a" as library on cygwin

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[issue1633953] re.compile("(.*$){1,4}", re.MULTILINE) fails

[Jeffrey C. Jacobs]

Jeffrey C. Jacobs <[EMAIL PROTECTED]> added the comment:

On first blush, this issue sounds quite similar to issue 2537, but I 
have been looking at different scenarios and found that there is a 
subtle difference because, grammatically:

(?m)(?:.*$)(.*$)

is the same as:

(?m)(.*$){2}

Yet the former compiles while the later raises the exception you list 
below.  Thus, I think the issue YOU raise is indeed related to the 
redundant repeat operator issue numbered 2537, BUT, when I match an 
expression with the alternate form, I get an empty string in my capture 
group, since in a range repeat over a capture group, only the last group 
is captured, while the entire expression matches only the first line, 
without the end-line character.  Thus, the other thing to remember is 
that ^ and $ are zero-width matches, so when you write .*$, you are 
saying match up to, but not including, the end of the line.  If you 
immediately follow that with another .*$, you will start from the point 
"up to, but not including, the end of the line", which means the next 
character is an end of line.  Thus, when you reach the second .*$, you 
capture nothing because the .* is allowed to be zero-length and you 
still haven't advanced PAST the end of the line.

As a working alternative, you could write r'(?m)(?:(.*$)[\r\n]*){1,4}' , 
since this would give you your 1-4 lines, but also consume the carriage 
return and line feed characters to get you to the next line.

Since we don't want to change the meaning of $ and ^ to make them 
capturing (custom POSIX character classes may make 'capturing' a new 
line character easier), and the 'redundant repeat operator' is already 
listed as a bug (your expression is essentially saying (.*){1,4}$ 
because it does not capture the new-line character(s) and thus has a 
redundant repeat operation in the range repeat expression), I'm willing 
to call this a repeat (technically repeated by as this issue is older) 
of issue 2537.

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[issue4088] Patch to implement a real poplib test suite

[Benjamin Peterson]

Benjamin Peterson <[EMAIL PROTECTED]> added the comment:

Thanks for the patch; it's look good. Applied in r66878.

--
resolution:  -> accepted
status: open -> closed

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[issue4075] Use WCHAR variant of OutputDebugString

[Thomas Heller]

Changes by Thomas Heller <[EMAIL PROTECTED]>:


--
nosy: +theller

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[issue1107887] Speed up function calls/can add more introspection info

[Collin Winter]

Changes by Collin Winter <[EMAIL PROTECTED]>:


--
nosy: +collinwinter

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