From: Takashi Yano <takashi.yano@nifty.ne.jp>
To: cygwin@cygwin.com
Cc: Bruno Haible <bruno@clisp.org>
Subject: Re: multithreading broken in Cygwin 3.5.3
Date: Wed, 29 May 2024 19:06:19 +0900 [thread overview]
Message-ID: <20240529190619.53c5820ecafcf31909c4320c@nifty.ne.jp> (raw)
In-Reply-To: <3631253.RrQHTzY0li@nimes>
On Thu, 23 May 2024 20:09:09 +0200
Bruno Haible wrote:
> In Cygwin 3.5.3, on different machines, I see 3 Gnulib tests failing by
> timeout that worked perfectly fine in Cygwin 3.4.6 and older:
> FAIL: test-call_once2.exe
> FAIL: test-lock.exe
> FAIL: test-pthread-once2.exe
>
> Find here attached a simplified version of test-pthread-once2.c.
> Compile and run:
> $ x86_64-pc-cygwin-gcc -Wall foo.c
> $ ./a
>
> Expected behaviour: Termination within 1 minute.
> Actual behaviour: Terminates by timeout after 10 minutes.
>
> When I change
> #define ENABLE_DEBUGGING 0
> to
> #define ENABLE_DEBUGGING 1
> the test does lots of output and terminates within 20 seconds.
> Therefore I can't really tell where the problem comes from.
> But I do see some changes in
> $ git diff cygwin-3.4.6 cygwin-3.5.3 winsup/cygwin/thread.cc
> $ git diff cygwin-3.4.6 cygwin-3.5.3 winsup/testsuite/winsup.api/pthread
Thanks for the report.
As you mentioned in private mail to me, this seems to be a regression of
pthread::once() introduced by
commit 2c5433e5da8216aaf7458e50c63683c68fb0d3e8.
I'll submit a patch for that issue shortly.
--
Takashi Yano <takashi.yano@nifty.ne.jp>
next prev parent reply other threads:[~2024-05-29 10:06 UTC|newest]
Thread overview: 5+ messages / expand[flat|nested] mbox.gz Atom feed top
2024-05-23 18:09 Bruno Haible
2024-05-29 10:06 ` Takashi Yano [this message]
2024-05-29 10:26 ` Bruno Haible
2024-05-29 11:04 ` Takashi Yano
2024-05-29 11:29 ` Bruno Haible
Reply instructions:
You may reply publicly to this message via plain-text email
using any one of the following methods:
* Save the following mbox file, import it into your mail client,
and reply-to-all from there: mbox
Avoid top-posting and favor interleaved quoting:
https://en.wikipedia.org/wiki/Posting_style#Interleaved_style
* Reply using the --to, --cc, and --in-reply-to
switches of git-send-email(1):
git send-email \
--in-reply-to=20240529190619.53c5820ecafcf31909c4320c@nifty.ne.jp \
--to=takashi.yano@nifty.ne.jp \
--cc=bruno@clisp.org \
--cc=cygwin@cygwin.com \
/path/to/YOUR_REPLY
https://kernel.org/pub/software/scm/git/docs/git-send-email.html
* If your mail client supports setting the In-Reply-To header
via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line
before the message body.
This is a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox;
as well as URLs for read-only IMAP folder(s) and NNTP newsgroup(s).