X-Recipient: archive-cygwin AT delorie DOT com
DomainKey-Signature: a=rsa-sha1; c=nofws; d=sourceware.org; h=list-id
	:list-unsubscribe:list-subscribe:list-archive:list-post
	:list-help:sender:reply-to:subject:to:references:from:message-id
	:date:mime-version:in-reply-to:content-type
	:content-transfer-encoding; q=dns; s=default; b=JudlnCe4DnXXb3lk
	qXFGwx2jZgt++M7gLWO/Un2TilI9U0nThpuW9jV9rH41UyixCs+tlLSbr77+tkra
	9dATJU0qBP0a6VzNsAe9Z4pwRULCsralyqHkoYasAAU9qE5uhFAKskWV7wHv9zJs
	vJZsljOGFoo+3N4zDV0SQTigLPA=
DKIM-Signature: v=1; a=rsa-sha1; c=relaxed; d=sourceware.org; h=list-id
	:list-unsubscribe:list-subscribe:list-archive:list-post
	:list-help:sender:reply-to:subject:to:references:from:message-id
	:date:mime-version:in-reply-to:content-type
	:content-transfer-encoding; s=default; bh=bXcQwBWzSkcwO+EQoDgTvF
	5YQpc=; b=PpmSogTFHfdqjZzJ+RDimdxtC4o/mCaugqFN+PhHqzRU291TqNpC86
	XtDJbQj7X/LrM8/xUJi05sW6JmUKXHY0r1r2xW5o6ehMebbBMk7bma++No/2hIby
	eJ6UU0dradf4mvIY3vEOD/MrG2GDWsQtkUeh4WHYCFEbNzerBH0hY=
Mailing-List: contact cygwin-help AT cygwin DOT com; run by ezmlm
List-Id: <cygwin.cygwin.com>
List-Subscribe: <mailto:cygwin-subscribe AT cygwin DOT com>
List-Archive: <http://sourceware.org/ml/cygwin/>
List-Post: <mailto:cygwin AT cygwin DOT com>
List-Help: <mailto:cygwin-help AT cygwin DOT com>, <http://sourceware.org/ml/#faqs>
Sender: cygwin-owner AT cygwin DOT com
Mail-Followup-To: cygwin AT cygwin DOT com
Delivered-To: mailing list cygwin AT cygwin DOT com
Authentication-Results: sourceware.org; auth=none
X-Spam-SWARE-Status: No, score=-1.6 required=5.0 tests=BAYES_00,KAM_LAZY_DOMAIN_SECURITY,RCVD_IN_DNSWL_LOW autolearn=no version=3.3.2 spammy=Take, H*R:D*ca, calgary, tee
X-HELO: smtp-out-no.shaw.ca
Reply-To: Brian DOT Inglis AT SystematicSw DOT ab DOT ca
Subject: Re: pthread_cond_timedwait with setclock(CLOCK_MONOTONIC) times out early
To: cygwin AT cygwin DOT com
References: <CAOWZHxdTpDD6LLVctvjFQWqQMd9cex7pp-s1YYaMAdtGECy3Yw AT mail DOT gmail DOT com> <20181126153545 DOT GM30649 AT calimero DOT vinschen DOT de> <CAOWZHxdmOeQ7o6099PERwq-FbFbdYLLm43JfR5iQm-HtfP90aw AT mail DOT gmail DOT com> <20181126164657 DOT GN30649 AT calimero DOT vinschen DOT de> <20181129101821 DOT GZ30649 AT calimero DOT vinschen DOT de> <CAOWZHxf+en-Nw20jOeeBu-TXBio07ai5ecJk2bvWDPtD0vqKFQ AT mail DOT gmail DOT com> <20181130121429 DOT GF30649 AT calimero DOT vinschen DOT de> <CAOWZHxes9wDz-Jsd4EpJAHaEUiJYais11aDFRzLVafVGzzZwqw AT mail DOT gmail DOT com> <20181130125633 DOT GH30649 AT calimero DOT vinschen DOT de>
From: Brian Inglis <Brian DOT Inglis AT SystematicSw DOT ab DOT ca>
Openpgp: preference=signencrypt
Message-ID: <5b0bcf7f-096d-c259-ce25-9511d4bccf84@SystematicSw.ab.ca>
Date: Fri, 30 Nov 2018 21:27:40 -0700
User-Agent: Mozilla/5.0 (Windows NT 10.0; WOW64; rv:60.0) Gecko/20100101 Thunderbird/60.3.2
MIME-Version: 1.0
In-Reply-To: <20181130125633.GH30649@calimero.vinschen.de>
Content-Type: text/plain; charset=utf-8
Content-Transfer-Encoding: 7bit
X-IsSubscribed: yes

On 2018-11-30 05:56, Corinna Vinschen wrote:
> On Nov 30 07:43, James E. King III wrote:
>> On Fri, Nov 30, 2018 at 7:23 AM Corinna Vinschen wrote:
>>> On Nov 29 17:38, James E. King III wrote:
>>>> On Thu, Nov 29, 2018 at 5:18 AM Corinna Vinschen wrote:
>>>>> I created a patch and uploaded new developer snapshots to
>>>>> https://cygwin.com/snapshots/  Please give them a try.
>>>> This fixed the issue for me.  What's the best way to detect cygwin
>>>> with this support?
>>> This will show up in version 2.12.0(*) so checking the release field
>>> from uname(2) should do the trick.
>> Is there a programmatic way to check this without having to parse a
>> bunch of char[20] from utsname.h?
> How would you do this on Linux?

Same:
https://stackoverflow.com/questions/46280456/check-kernel-version-at-runtime-in-c

- read /proc/version which is generated from utsname fields (or vice versa)
using e.g fscanf

$ head /proc/version
CYGWIN_NT-10.0 version 2.11.2(0.329/5/3) (corinna AT calimero DOT vinschen DOT de) (gcc
version 7.3.0 20180125 (Fedora Cygwin 7.3.0-2) (GCC) ) 2018-11-08 14:34

- read (or source) /{etc,usr/lib}/os-release VERSION_ID line (or variable):

$ head /{etc,usr/lib}/os-release
==> /etc/os-release <==
PRETTY_NAME="Debian GNU/Linux 9 (stretch)"
NAME="Debian GNU/Linux"
VERSION_ID="9"
VERSION="9 (stretch)"
ID=debian
HOME_URL="https://www.debian.org/"
SUPPORT_URL="https://www.debian.org/support"
BUG_REPORT_URL="https://bugs.debian.org/"

==> /usr/lib/os-release <==
... [same]

Could also be supported under Cygwin:

$ cyg-os-release.sh | tee /usr/lib/os-release
PRETTY_NAME="Cygwin 64 2.11.2 2018-11-08"
NAME=Cygwin
ID=cygwin
ID_LIKE=msys mingw
VARIANT="64"
VARIANT_ID="x86_64"
VERSION="2.11.2 (0.329/5/3) 2018-11-08 14:34"
VERSION_ID="2.11.2"
BUILD_ID="0.329/5/3 2018-11-08 14:34"
CPE_NAME="cpe:/a:cygwin:cygwin:2.11.2::~~~~x64~Windows%3e%3d6.0"
HOME_URL="https://cygwin.com/"
SUPPORT_URL="https://cygwin.com/ml/cygwin/"
BUG_REPORT_URL="https://cygwin.com/ml/cygwin/"

$ (cd /etc; ln -fsv ../usr/lib/os-release .)
'./os-release' -> '../usr/lib/os-release'

-- 
Take care. Thanks, Brian Inglis, Calgary, Alberta, Canada

This email may be disturbing to some readers as it contains
too much technical detail. Reader discretion is advised.

--
Problem reports:       http://cygwin.com/problems.html
FAQ:                   http://cygwin.com/faq/
Documentation:         http://cygwin.com/docs.html
Unsubscribe info:      http://cygwin.com/ml/#unsubscribe-simple