GNU bug report logs - #34618
26.1.92; timerfd interface causes slowdown on Cygwin

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From: Ken Brown <kbrown <at> cornell.edu>
To: Eli Zaretskii <eliz <at> gnu.org>
Cc: "34618 <at> debbugs.gnu.org" <34618 <at> debbugs.gnu.org>
Subject: bug#34618: 26.1.92; timerfd interface causes slowdown on Cygwin
Date: Sat, 9 Mar 2019 22:20:44 +0000

[Message part 1 (text/plain, inline)]

On 3/9/2019 2:42 PM, Eli Zaretskii wrote:
>> From: Ken Brown <kbrown <at> cornell.edu>
>> CC: "34618 <at> debbugs.gnu.org" <34618 <at> debbugs.gnu.org>
>> Date: Sat, 9 Mar 2019 19:27:34 +0000
>>
>> The Cygwin problems with the timerfd functions have been fixed as of
>> cygwin-3.0.2, so I've re-enabled the use of these functions on the master
>> branch.  To play it safe, we should probably leave them disabled on the emacs-26
>> branch.
> 
> Isn't there a way to get at the version of Cygwin at run time?  I
> think the best solution is to allow timerfd functions only for
> versions whose support is not buggy, and that's not a compile-time
> decision, right?

Good idea.  How's the attached?

Ken

[0001-Use-a-runtime-test-for-timerfd-on-Cygwin-Bug-34618.patch (text/plain, attachment)]

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