From: Takashi Yano <takashi.yano@nifty.ne.jp>
To: cygwin@cygwin.com
Subject: Re: [ANNOUNCEMENT] TEST: Cygwin 3.1.0-0.1
Date: Sat, 17 Aug 2019 16:59:00 -0000 [thread overview]
Message-ID: <20190818014317.38e23198147dad936da1ac94@nifty.ne.jp> (raw)
In-Reply-To: <20190816144811.GW11632@calimero.vinschen.de>
Hi Corinna,
On Fri, 16 Aug 2019 16:48:11 +0200
Corinna Vinschen wrote:
> I now had an idea, but I'm not entirely sure if it's the right thing to
> do. Can you please test this? It consists of two patches, one with the
> revamped signalfd handling, and one with the revert of the signalfd
> patch I applied a couple of days ago.
>
> Quick description: I dropped signalfd_select_wait entirely. Instead,
> wait_sig sets or resets a manual event object to indicate if there are
> signals pending in the queue, even after trying to handle them the
> normal way. That usually means they are blocked.
>
> select() uses the event to wake up from WFMO, if at least one signalfd
> is present in the read descriptor set. The rest is done via the peek
> and verify functions in select, which basically just check if this
> signalfd is waiting for one of the pending signals.
>
> The reversion of my patch from a couple days ago is not required as
> such, but after thinking about this a while I'm convinced that this was
> just me not getting the full picture. Also, reverting this patch would
> revert to seeing a SEGV in your testcase and thus a bug in the new code,
> too.
>
> I attached both patches. It would be pretty nice if you could test them
> and point out any problems you get with this new code.
>
> Please note that you should ideally perform a full rebuild due to the
> slight change in TLS layout.
I confirmed that my STC and script command works as expected with these
patches.
Thank you for greate work!
--
Takashi Yano <takashi.yano@nifty.ne.jp>
--
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next prev parent reply other threads:[~2019-08-17 16:43 UTC|newest]
Thread overview: 26+ messages / expand[flat|nested] mbox.gz Atom feed top
2019-08-09 18:55 Corinna Vinschen
2019-08-11 7:28 ` Thorsten Kampe
2019-08-12 13:01 ` Corinna Vinschen
2019-08-12 19:44 ` Takashi Yano
2019-08-13 22:27 ` Thorsten Kampe
2019-08-13 21:45 ` Thorsten Kampe
2019-08-13 21:51 ` Thorsten Kampe
2019-08-14 7:23 ` Takashi Yano
2019-08-12 13:44 ` Takashi Yano
2019-08-12 15:36 ` Corinna Vinschen
2019-08-13 10:48 ` Corinna Vinschen
2019-08-14 11:41 ` Takashi Yano
2019-08-14 11:47 ` Takashi Yano
2019-08-14 13:49 ` Corinna Vinschen
2019-08-14 19:21 ` Takashi Yano
2019-08-15 7:49 ` Corinna Vinschen
2019-08-15 10:36 ` Corinna Vinschen
2019-08-15 15:04 ` Corinna Vinschen
2019-08-15 15:09 ` Corinna Vinschen
2019-08-16 14:58 ` Corinna Vinschen
2019-08-17 16:59 ` Takashi Yano [this message]
2019-08-18 12:07 ` Corinna Vinschen
2019-08-18 12:08 ` Achim Gratz
2019-08-18 14:29 ` Corinna Vinschen
2019-08-18 14:51 ` Achim Gratz
2019-08-19 8:56 ` Corinna Vinschen
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