X-Faces and 'too many open files'

X-Faces and 'too many open files'

[Olaf Jahn]

Hello everybody.

I encountered the following problem with Gnus' ability to display the
X-Faces: After browsing through a number of articles containing
X-Faces (and having them displayed in the article buffer [1]),
my xemacs refuses to display more faces telling me:

	        Cannot open: too many open files

It seems that Gnus is somehow leaking file handles (yes, all articles
are displayed in the same *Article* buffer). I encountered this in 
Gnus 3.4.37 and even 3.4.65. My xemacs is 19.15.

[1] The relevant part of my ~/.gnus:
(setq gnus-article-display-hook
      (quote (gnus-article-hide-headers-if-wanted	      
	      gnus-article-treat-overstrike
	      gnus-article-highlight
	      gnus-article-de-quoted-unreadable
	      gnus-article-display-x-face)))

Is there a known way to prevent (or circumvent) this annoying phenomenon?

Any hint appreciated.
  Olaf

-- 
Olaf Jahn                                   jahno@math.tu-berlin.de
                                http://www.math.tu-berlin.de/~jahno 
                               PGP public key available on request.

Re: X-Faces and 'too many open files'

[Lars Magne Ingebrigtsen]

Olaf Jahn <jahno@math.tu-berlin.de> writes:

> I encountered the following problem with Gnus' ability to display the
> X-Faces: After browsing through a number of articles containing
> X-Faces (and having them displayed in the article buffer [1]),
> my xemacs refuses to display more faces telling me:
> 
> 	        Cannot open: too many open files
> 
> It seems that Gnus is somehow leaking file handles (yes, all articles
> are displayed in the same *Article* buffer). 

Sounds to me like an XEmacs bug.  No Lisp packages deal with file
handles. 

-- 
(domestic pets only, the antidote for overdose, milk.)
  larsi@gnus.org * Lars Magne Ingebrigtsen

Re: X-Faces and 'too many open files'

[Hrvoje Niksic]

Olaf Jahn <jahno@math.tu-berlin.de> writes:

> Hello everybody.
> 
> I encountered the following problem with Gnus' ability to display the
> X-Faces: After browsing through a number of articles containing
> X-Faces (and having them displayed in the article buffer [1]),
> my xemacs refuses to display more faces telling me:
> 
> 	        Cannot open: too many open files
> 
> It seems that Gnus is somehow leaking file handles (yes, all articles
> are displayed in the same *Article* buffer). I encountered this in 
> Gnus 3.4.37 and even 3.4.65. My xemacs is 19.15.

Try setting `debug-on-error' to t and seeing what is going on,
exactly.  BTW, do you show X-Faces directly (in a buffer), or through
XV?

-- 
Hrvoje Niksic <hniksic@srce.hr> | Student at FER Zagreb, Croatia
--------------------------------+--------------------------------
Speak softly and carry a +6 two-handed sword.

Re: X-Faces and 'too many open files'

[Olaf Jahn]

>>>>> "Hrvoje" == Hrvoje Niksic <hniksic@srce.hr> writes:

    Hrvoje> Olaf Jahn <jahno@math.tu-berlin.de> writes:
    >> Hello everybody.
    >> 
    >> I encountered the following problem with Gnus' ability to
    >> display the X-Faces: After browsing through a number of
    >> articles containing X-Faces (and having them displayed in the
    >> article buffer [1]), my xemacs refuses to display more faces
    >> telling me:
    >> 
    >> Cannot open: too many open files
    >> 
    >> It seems that Gnus is somehow leaking file handles (yes, all
    >> articles are displayed in the same *Article* buffer). I
    >> encountered this in Gnus 3.4.37 and even 3.4.65. My xemacs is
    >> 19.15.

    Hrvoje> Try setting `debug-on-error' to t and seeing what is going
    Hrvoje> on, exactly.  BTW, do you show X-Faces directly (in a
    Hrvoje> buffer), or through XV?

I show the faces directly in the buffer. See the backtrace below.
Doesn't tell me very much, as I ain't much into Emacs lisps.
Perhaps someone can help.

  Olaf

Backtrace:

Signaling: (file-error "Cannot open" "too many open files")
  call-process-internal("icontopbm" "/tmp/emacsa005F8" (t nil) nil)
  apply(call-process-internal "icontopbm" "/tmp/emacsa005F8" (t nil) nil nil)
  call-process("icontopbm" "/tmp/emacsa005F8" (t nil) nil)
  apply(call-process "icontopbm" "/tmp/emacsa005F8" (t nil) nil nil)
  call-process-region(1 1083 "icontopbm" t (t nil) nil)
  apply(call-process-region 1 1083 "icontopbm" t (t nil) nil nil)
  gnus-xmas-call-region("icontopbm")
  gnus-xmas-article-display-xface(698 838)
  article-display-x-face()
  apply(article-display-x-face nil)
  (if interactive (call-interactively (quote article-display-x-face)) (apply (quote article-display-x-face) args))
)
  (save-excursion (set-buffer gnus-article-buffer) (if interactive (call-interactively ...) (apply ... args)))
)
  gnus-article-display-x-face()
  run-hooks(gnus-article-display-hook)
  gnus-article-prepare(219578 nil)
  gnus-summary-display-article(219578 nil)
  gnus-summary-select-article(nil nil pseudo)
  gnus-summary-scroll-up(1)
  call-interactively(gnus-summary-scroll-up)

Re: X-Faces and 'too many open files'

[Hrvoje Niksic]

Olaf Jahn <jahno@math.tu-berlin.de> writes:

> I show the faces directly in the buffer.

But your XEmacs is obviously compiled without x-face support?

> Signaling: (file-error "Cannot open" "too many open files")
>   call-process-internal("icontopbm" "/tmp/emacsa005F8" (t nil) nil)
>   apply(call-process-internal "icontopbm" "/tmp/emacsa005F8" (t nil) nil nil)
>   call-process("icontopbm" "/tmp/emacsa005F8" (t nil) nil)
>   apply(call-process "icontopbm" "/tmp/emacsa005F8" (t nil) nil nil)
>   call-process-region(1 1083 "icontopbm" t (t nil) nil)
>   apply(call-process-region 1 1083 "icontopbm" t (t nil) nil nil)
>   gnus-xmas-call-region("icontopbm")

This looks like an XEmacs bug.  Why didn't XEmacs close its file
descriptors?

-- 
Hrvoje Niksic <hniksic@srce.hr> | Student at FER Zagreb, Croatia
--------------------------------+--------------------------------
Which is worse: ignorance or apathy?  Who knows?  Who cares?