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bug#24091: 24.5; High CPU usage at startup while hidden


From: Noam Postavsky
Subject: bug#24091: 24.5; High CPU usage at startup while hidden
Date: Sat, 3 Sep 2016 13:53:40 -0400

On Sat, Sep 3, 2016 at 1:45 PM, Eli Zaretskii <eliz@gnu.org> wrote:
>> From: Noam Postavsky <npostavs@users.sourceforge.net>
>> Date: Sat, 3 Sep 2016 13:29:39 -0400
>> Cc: 24091@debbugs.gnu.org, Aiken <acairncross@gmail.com>,
>>       Clément Pit--Claudel <clement.pit@gmail.com>
>>
>> >> > I'd start by finding out why FRAME_ICONIFIED_P returns false.
>> >>
>> >> Well, it seems that's because Emacs never receives an UnmapNotify event.
>> >> But that doesn't feel like I'm getting any closer to a solution...
>> >
>> > What events does Emacs get in that case?
>>
>> Emacs is getting PropertyNotify, ConfigureNotify, MapNotify, and
>> ReparentNotify events.
>
> Does it work to turn this:
>
>         if (FRAME_ICONIFIED_P (f) &&  ++tries > 100)
>           break;
>
> into this:
>
>         if ((FRAME_ICONIFIED_P (f) || FRAME_VISIBLE_P (f)) &&  ++tries > 100)
>           break;

No, which sort of makes sense since the frame isn't actually visible.





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