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Subject: bug#67694: 30.0.50; tool-bar
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In nsterm.m, deleting the lines of code


#ifdef NS_IMPL_COCOA
if (! send_appdefined)
  {
  /* OS X 10.10.1 swallows the AppDefined event we are sending ourselves
       in certain situations (rapid incoming events).
       So check if we have one, if not add one.  */
    NSEvent *appev =3D [NSApp =
nextEventMatchingMask:NSEventMaskApplicationDefined
                                        untilDate:[NSDate distantPast]
                                           inMode:NSDefaultRunLoopMode
                                          dequeue:NO];
    if (! appev) send_appdefined =3D YES;
  }
#endif

as done in commit 6acb3c5b05a7b9fb32a5336e1bb740f527571ae9 on 23-09-11, =
seems to be incompatible with macos Sonoma or Monterey. In both =
versions, and with both an M1 processor and an Intel one, I got the =
following problem, with these lines of code removed. I have pdf-tools =
installed, and via the code in windows.el, I have both the pdf output =
and some latex source code to appear in their own frames. I also have a =
managed to have a tool-bar in the frame showing the pdf-outout, with an =
icon for going from one page to the next. Now if I repeatedly click with =
the mouse on this icon very fast, then, after 3 to 5 clicks, the whole =
emacs.app begins to hang. This is not so with the above lines of code =
still present in nsterm.m.

Koinrad=

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To: Konrad Podczeck <konrad.podczeck@HIDDEN>
Subject: bug#67694: Acknowledgement (30.0.50; tool-bar)
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Subject: bug#67694: 30.0.50; tool-bar
Resent-From: Daniel =?UTF-8?Q?Mart=C3=ADn?= <mardani29@HIDDEN>
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 Podczeck's message of "Thu, 7 Dec 2023 16:44:15 +0100")
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Date: Sat, 16 Dec 2023 14:15:05 +0100
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Konrad Podczeck <konrad.podczeck@HIDDEN> writes:

> In nsterm.m, deleting the lines of code
>
>
> #ifdef NS_IMPL_COCOA
> if (! send_appdefined)
>   {
>   /* OS X 10.10.1 swallows the AppDefined event we are sending ourselves
>        in certain situations (rapid incoming events).
>        So check if we have one, if not add one.  */
>     NSEvent *appev =3D [NSApp nextEventMatchingMask:NSEventMaskApplicatio=
nDefined
>                                         untilDate:[NSDate distantPast]
>                                            inMode:NSDefaultRunLoopMode
>                                           dequeue:NO];
>     if (! appev) send_appdefined =3D YES;
>   }
> #endif
>
> as done in commit 6acb3c5b05a7b9fb32a5336e1bb740f527571ae9 on
> 23-09-11, seems to be incompatible with macos Sonoma or Monterey. In
> both versions, and with both an M1 processor and an Intel one, I got
> the following problem, with these lines of code removed. I have
> pdf-tools installed, and via the code in windows.el, I have both the
> pdf output and some latex source code to appear in their own frames. I
> also have a managed to have a tool-bar in the frame showing the
> pdf-outout, with an icon for going from one page to the next. Now if I
> repeatedly click with the mouse on this icon very fast, then, after 3
> to 5 clicks, the whole emacs.app begins to hang. This is not so with
> the above lines of code still present in nsterm.m.

Could you describe the steps to reproduce this bug in more detail?  Does
it happen only when using the pdf-tools package?

Starting from emacs -Q, I=E2=80=99ve installed the pdf-tools package (M-x
package-install RET pdf-tools RET), but, after visiting a PDF file, I
don=E2=80=99t see any tool-bar icons to go to the previous and next page in=
 the
PDF.

Message sent to bug-gnu-emacs@HIDDEN:

Subject: bug#67694: 30.0.50; tool-bar
Resent-From: Alan Third <alan@HIDDEN>
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From: Alan Third <alan@HIDDEN>
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On Sat, Dec 16, 2023 at 02:15:05PM +0100, Daniel Martín via Bug reports for GNU Emacs, the Swiss army knife of text editors wrote:
> Konrad Podczeck <konrad.podczeck@HIDDEN> writes:
> 
> > In nsterm.m, deleting the lines of code
> >
> >
> > #ifdef NS_IMPL_COCOA
> > if (! send_appdefined)
> >   {
> >   /* OS X 10.10.1 swallows the AppDefined event we are sending ourselves
> >        in certain situations (rapid incoming events).
> >        So check if we have one, if not add one.  */
> >     NSEvent *appev = [NSApp nextEventMatchingMask:NSEventMaskApplicationDefined
> >                                         untilDate:[NSDate distantPast]
> >                                            inMode:NSDefaultRunLoopMode
> >                                           dequeue:NO];
> >     if (! appev) send_appdefined = YES;
> >   }
> > #endif
> >
> > as done in commit 6acb3c5b05a7b9fb32a5336e1bb740f527571ae9 on
> > 23-09-11, seems to be incompatible with macos Sonoma or Monterey. In
> > both versions, and with both an M1 processor and an Intel one, I got
> > the following problem, with these lines of code removed. I have
> > pdf-tools installed, and via the code in windows.el, I have both the
> > pdf output and some latex source code to appear in their own frames. I
> > also have a managed to have a tool-bar in the frame showing the
> > pdf-outout, with an icon for going from one page to the next. Now if I
> > repeatedly click with the mouse on this icon very fast, then, after 3
> > to 5 clicks, the whole emacs.app begins to hang. This is not so with
> > the above lines of code still present in nsterm.m.
> 
> Could you describe the steps to reproduce this bug in more detail?  Does
> it happen only when using the pdf-tools package?
> 
> Starting from emacs -Q, I’ve installed the pdf-tools package (M-x
> package-install RET pdf-tools RET), but, after visiting a PDF file, I
> don’t see any tool-bar icons to go to the previous and next page in the
> PDF.

I hate this application defined event malarkey, but I was never able
to come up with a better solution. The problem described in the
removed comment certainly looks like an Apple bug, but if it is then
surely it would have been fixed by now.

Konrad, are you able to try changing the code thus (the line numbers
are probably wrong):

modified   src/nsterm.m
@@ -4604,10 +4604,16 @@ Function modeled after x_draw_glyph_string_box ().
                                    data1: value
                                    data2: 0];
 
-      /* Post an application defined event on the event queue.  When this is
-         received the [NXApp run] will return, thus having processed all
-         events which are currently queued.  */
-      [NSApp postEvent: nxev atStart: NO];
+      if (! nxev)
+        {
+          NSLog(@"Something has stopped us creating an event.");
+          send_appdefined = YES;
+        }
+      else
+        /* Post an application defined event on the event queue.  When this is
+           received the [NXApp run] will return, thus having processed all
+           events which are currently queued.  */
+        [NSApp postEvent: nxev atStart: NO];
     }
 }

See if the log message prints, and/or whether it solves the problem.

-- 
Alan Third

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> Konrad, are you able to try changing the code thus (the line numbers
> are probably wrong):
>=20
> modified   src/nsterm.m
> @@ -4604,10 +4604,16 @@ Function modeled after x_draw_glyph_string_box =
().
>                                    data1: value
>                                    data2: 0];
>=20
> -      /* Post an application defined event on the event queue.  When =
this is
> -         received the [NXApp run] will return, thus having processed =
all
> -         events which are currently queued.  */
> -      [NSApp postEvent: nxev atStart: NO];
> +      if (! nxev)
> +        {
> +          NSLog(@"Something has stopped us creating an event.");
> +          send_appdefined =3D YES;
> +        }
> +      else
> +        /* Post an application defined event on the event queue.  =
When this is
> +           received the [NXApp run] will return, thus having =
processed all
> +           events which are currently queued.  */
> +        [NSApp postEvent: nxev atStart: NO];
>     }
> }
>=20
> See if the log message prints, and/or whether it solves the problem.
>=20
> --=20
> Alan Third

This did not help me.

Konrad=

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> Could you describe the steps to reproduce this bug in more detail?  =
Does
> it happen only when using the pdf-tools package?


No idea.

>=20
> Starting from emacs -Q, I=E2=80=99ve installed the pdf-tools package =
(M-x
> package-install RET pdf-tools RET), but, after visiting a PDF file, I
> don=E2=80=99t see any tool-bar icons to go to the previous and next =
page in the
> PDF.


I have inserted something like the following in pdf-view.el:


(defvar pdfview-tool-bar-map
  (let ((map (make-sparse-keymap)))
(tool-bar-local-item "some-picture-name-1" 'pdf-view-first-page =
'pdf-view-first-page map :help "First page")
(tool-bar-local-item "some-picture-name-2" 'pdf-view-next-page =
'pdf-view-next-page map :help "Next page")
(tool-bar-local-item "some-picture-name-3" 'pdf-view-previous-page =
'pdf-view-previous-page map :help "Previous page")
(tool-bar-local-item "some-picture-name-4" 'pdf-view-last-page =
'pdf-view-last-page map :help "Last page")
map)



and, after the block starting with "(setq-local mode-line-position


(setq-local tool-bar-map pdfview-tool-bar-map)

Konrad

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From: Alan Third <alan@HIDDEN>
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package emacs
merge 67528 67694
thankyou

On Wed, Jan 10, 2024 at 09:39:54AM -0800, Stefan Kangas wrote:
> Konrad Podczeck <konrad.podczeck@HIDDEN> writes:
> 
> > In nsterm.m, deleting the lines of code
> >
> >
> > #ifdef NS_IMPL_COCOA
> >   if (! send_appdefined)
> >     {
> >     /* OS X 10.10.1 swallows the AppDefined event we are sending ourselves
> >          in certain situations (rapid incoming events).
> >          So check if we have one, if not add one.  */
> >       NSEvent *appev = [NSApp nextEventMatchingMask:NSEventMaskApplicationDefined
> >                                           untilDate:[NSDate distantPast]
> >                                              inMode:NSDefaultRunLoopMode
> >                                             dequeue:NO];
> >       if (! appev) send_appdefined = YES;
> >     }
> > #endif
> >
> > as done in commit 6acb3c5b05a7b9fb32a5336e1bb740f527571ae9 on
> > 23-09-11, seems to be incompatible with macos Sonoma or Monterey.
> > In both versions, and with both an M1 processor and an Intel one,
> > I got the following problem, with these lines of code removed. I
> > have pdf-tools installed, and via the code in windows.el, I have
> > both the pdf output and some latex source code to appear in their
> > own frames. I also have a managed to have a tool-bar in the frame
> > showing the pdf-outout, with an icon for going from one page to
> > the next. Now if I repeatedly click with the mouse on this icon
> > very fast, then, after 3 to 5 clicks, the whole emacs.app begins
> > to hang. This is not so with the above lines of code still present
> > in nsterm.m.
> >
> > Konrad Podczeck
> 
> Alan, what do you think?

We had a look at this in bug#67694, and I don't know. The code was
removed because it appeared to be causing a crash on startup, so if we
reinstate it we'll need to reopen that bug report (bug#65843).

I find it hard to believe the comment is right and this is a bug that
hasn't ever been fixed. I think it's more likely the actual culprit is
some timing issue in our own code, but that doesn't help as I don't
understand it. As for how this code causes the crash in 65843, I don't
understand that either.
-- 
Alan Third

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Subject: Re: bug#51336: 29.0.50; Application not responding
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package emacs
merge 51336 67694
thankyou

On Fri, Jan 12, 2024 at 05:31:49PM +0100, Kirill Korinsky wrote:
> Emacs was frozen (UI) and hasn't response to any command. Before that it had
> happened I'd resized a window.
> 
> I attach and de-attach external screen quite often and it triggers the resize.
> 
> So, when it was frozen I've attached via lldb and get stack traces bellow.
> 
> It is reproducable, not each resize but often enough.
> 
> When it frozen, I need to kill it, otherwise it absolutle useless.
> 
> And this stack trace was obtained from local root d9462e24a967e32d550ee886b5150f0cc78358f6
> 
> (lldb) bt all
> * thread #1, queue = 'com.apple.main-thread', stop reason = signal SIGSTOP
>   * frame #0: 0x00007ff80d07596a libsystem_kernel.dylib`mach_msg_trap + 10
>     frame #1: 0x00007ff80d075cd8 libsystem_kernel.dylib`mach_msg + 56
>     frame #2: 0x00007ff80d17929d CoreFoundation`__CFRunLoopServiceMachPort + 319
>     frame #3: 0x00007ff80d177928 CoreFoundation`__CFRunLoopRun + 1276
>     frame #4: 0x00007ff80d176d6c CoreFoundation`CFRunLoopRunSpecific + 562
>     frame #5: 0x00007ff815e245e6 HIToolbox`RunCurrentEventLoopInMode + 292
>     frame #6: 0x00007ff815e2434a HIToolbox`ReceiveNextEventCommon + 594
>     frame #7: 0x00007ff815e240e5 HIToolbox`_BlockUntilNextEventMatchingListInModeWithFilter + 70
>     frame #8: 0x00007ff80fbb1f6d AppKit`_DPSNextEvent + 927
>     frame #9: 0x00007ff80fbb062a AppKit`-[NSApplication(NSEvent) _nextEventMatchingEventMask:untilDate:inMode:dequeue:] + 1394
>     frame #10: 0x00007ff80fba2cd9 AppKit`-[NSApplication run] + 586
>     frame #11: 0x0000000104b2449c Emacs`-[EmacsApp run] + 317

OK, I think this is the same as bug#67694, so I'll merge them.

I think we need to revert 6acb3c5b05a7b9fb32a5336e1bb740f527571ae9 as
discussed in that other bug report and re-open bug#65843, if we can.

Unless anyone else has a better idea.
-- 
Alan Third

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