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From: Richard Copley <rcopley@gmail.com>
To: Eli Zaretskii <eliz@gnu.org>
Cc: 25875@debbugs.gnu.org
Subject: bug#25875: 26.0.50; Hang logging out of MS-Windows
Date: Tue, 28 Feb 2017 06:37:03 +0000	[thread overview]
Message-ID: <CAPM58ogfy0iOVrZq-bQH_vES-jGg_L3+O1kC6242PqS6xj58Gg@mail.gmail.com> (raw)
In-Reply-To: <83a897outx.fsf@gnu.org>

On 28 February 2017 at 03:30, Eli Zaretskii <eliz@gnu.org> wrote:
>> From: Richard Copley <rcopley@gmail.com>
>> Date: Mon, 27 Feb 2017 21:09:52 +0000
>> Cc: Ken Brown <kbrown@cornell.edu>, 25875@debbugs.gnu.org
>>
>> >> Posting a message and then sleeping while it's processed is odd,
>> >> isn't it? If the input thread /sent/ its message to the main thread,
>> >> then while waiting for SendMessage to return, the input thread would
>> >> automatically continue to process sent messages
>> >
>> > No, it's the main thread that calls SendMessage, to tell the input
>> > thread to draw something.  And since the input thread is inside
>> > 'sleep', the SendMessage call never returns, and the main thread never
>> > gets around to checking its input queue, where there's an event bound
>> > to kill-emacs, waiting to be processed.
>>
>> Please Eli, read what I said again. It might not be right, but you
>> misunderstood it.
>> I know the input thread isn't calling SendMessage. It's callling PostMessage and
>> then sleep. I'm suggesting that the input thread should call SendMessage.
>
> The input thread doesn't call PostMessage.  It calls post_message,
> which is a private messaging mechanism between the input thread and
> the main thread, implemented in w32xfns.c and based on a critical
> section.  IOW, we don't use the Windows messaging in that case.  So I
> don't see how calling SendMessage will help in this situation.  Am I
> missing something?

I see, thanks.





  reply	other threads:[~2017-02-28  6:37 UTC|newest]

Thread overview: 43+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2017-02-25 19:35 bug#25875: 26.0.50; Hang logging out of MS-Windows Richard Copley
2017-02-25 19:41 ` Richard Copley
2017-02-25 20:36   ` Eli Zaretskii
2017-02-25 21:13     ` Richard Copley
2017-02-26 15:47       ` Eli Zaretskii
2017-02-26 18:26         ` Richard Copley
2017-02-25 20:33 ` Eli Zaretskii
2017-02-25 21:07   ` Richard Copley
2017-02-25 21:30     ` Richard Copley
2017-02-25 21:37       ` Richard Copley
2017-02-25 22:02         ` Richard Copley
2017-02-26 15:47           ` Eli Zaretskii
2017-02-26 18:37             ` Richard Copley
2017-02-26 15:44     ` Eli Zaretskii
2017-02-26 18:04       ` Ken Brown
2017-02-26 18:25         ` Eli Zaretskii
2017-02-26 18:58           ` Ken Brown
2017-02-26 19:25             ` Eli Zaretskii
2017-02-26 23:38               ` Ken Brown
2017-02-27  8:14                 ` Richard Copley
2017-02-27 15:36                   ` Eli Zaretskii
2017-02-27 19:04                     ` Richard Copley
2017-02-27 19:16                       ` Eli Zaretskii
2017-02-27 19:23                         ` Richard Copley
2017-02-27 19:30                           ` Richard Copley
2017-02-27 19:39                             ` Ken Brown
2017-02-27 19:46                               ` Richard Copley
2017-02-27 19:56                                 ` Richard Copley
2017-02-27 20:19                                   ` Ken Brown
2017-02-27 20:27                                 ` Eli Zaretskii
2017-02-27 20:52                                   ` Richard Copley
2017-02-27 20:58                                     ` Eli Zaretskii
2017-02-27 21:09                                       ` Richard Copley
2017-02-28  3:30                                         ` Eli Zaretskii
2017-02-28  6:37                                           ` Richard Copley [this message]
2017-02-27 22:37                   ` Ken Brown
2017-02-27 23:03                     ` Richard Copley
2017-02-28  3:35                       ` Eli Zaretskii
2017-02-28  7:21                         ` Richard Copley
2017-02-28 15:36                           ` Eli Zaretskii
2017-02-28 16:40                             ` Ken Brown
2017-02-28 16:44                               ` Eli Zaretskii
2017-02-28 18:59                                 ` Richard Copley

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