Re: [PATCH] avoid expensive load of all fonts

[Robert Millan <rmh@aybabtu.com>]

Committed.

On Fri, Jul 04, 2008 at 03:55:01PM +0200, Robert Millan wrote:
> 
> This makes update-grub avoid expensive load of complete font files
> and instead rely on ascii.pff when it is available.  In qemu, it brings
> startup time roughly from 25s to 1s.
> 
> -- 
> Robert Millan
> 
> <GPLv2> I know my rights; I want my phone call!
> <DRM> What good is a phone call… if you are unable to speak?
> (as seen on /.)

> 2008-07-04  Robert Millan  <rmh@aybabtu.com>
> 
> 	* Makefile.in (UNICODE_ARROWS, UNICODE_LINES): New variables (they
> 	define the codes for arrows and lines used for the menu).
> 	(ascii.pff): Generate fonts for $(UNICODE_ARROWS) and $(UNICODE_LINES)
> 	as well.
> 
> 	* util/update-grub_lib.in (font_path): Prefer ascii.pff over complete
> 	fonts, because the latter are too slow.
> 
> Index: Makefile.in
> ===================================================================
> --- Makefile.in	(revision 1691)
> +++ Makefile.in	(working copy)
> @@ -142,11 +142,16 @@
>  ifeq (, $(UNIFONT_HEX))
>  else
>  pkgdata_DATA += unicode.pff ascii.pff
> +
> +# Arrows and lines are needed to draw the menu, so we always include them
> +UNICODE_ARROWS=0x2190-0x2193
> +UNICODE_LINES=0x2501-0x251B
> +
>  unicode.pff: $(UNIFONT_HEX)
>  	ruby $(srcdir)/util/unifont2pff.rb $(UNIFONT_HEX) > $@
>  
>  ascii.pff: $(UNIFONT_HEX)
> -	ruby $(srcdir)/util/unifont2pff.rb 0-127 $(UNIFONT_HEX) > $@
> +	ruby $(srcdir)/util/unifont2pff.rb 0x0-0x7f $(UNICODE_ARROWS) $(UNICODE_LINES) $(UNIFONT_HEX) > $@
>  endif
>  
>  all-local: $(PROGRAMS) $(PKGLIB) $(PKGDATA) $(SCRIPTS) $(MKFILES)
> Index: util/update-grub_lib.in
> ===================================================================
> --- util/update-grub_lib.in	(revision 1691)
> +++ util/update-grub_lib.in	(working copy)
> @@ -131,8 +131,9 @@
>  font_path ()
>  {
>    for dir in ${pkgdatadir} /boot/grub /usr/share/grub ; do
> -    # Prefer complete fonts over incomplete ones.
> -    for basename in unicode unifont ascii ; do
> +    # FIXME: We prefer ascii because loading complete fonts is too slow (and
> +    # we don't yet provide the gettext magic that would make unicode useful).
> +    for basename in ascii unicode unifont ; do
>        path="${dir}/${basename}.pff"
>        if is_path_readable_by_grub ${path} > /dev/null ; then
>          echo "${path}"

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-- 
Robert Millan

<GPLv2> I know my rights; I want my phone call!
<DRM> What good is a phone call… if you are unable to speak?
(as seen on /.)