Re: reducing compile time

[luigi scarso <luigi.scarso@gmail.com>]

On Mon, Feb 23, 2009 at 9:26 PM, Alan Stone
<software.list.1es9s@gmail.com> wrote:
> On Mon, Feb 23, 2009 at 8:57 PM, Alan Stone <software.list.1es9s@gmail.com>
> wrote:
>>
>> On Mon, Feb 23, 2009 at 6:54 PM, Wolfgang Schuster
>> <schuster.wolfgang@googlemail.com> wrote:
>>>
>>> Am 23.02.2009 um 18:16 schrieb Alan Stone:
>>>
>>>> - does using \doifundefined{myMacro}{...} shorten tex runs/compile time
>>>> ?
>>>
>>> In which way?
>>
>> As I don't know/understand what happens between (Lua)TeX runs, to keep
>> macro definitions in memory.
>
>
> Correction: to avoid spending time redefining macros in case their
> definitions are kept in memory between Lua(TeX) runs.

$>context test.tex
is roughly
finish :=false
while not(finish):
  run_luatex_with_context_format_on_file(test.tex)

where
run_luatex_with_context_format_on_file(filename)
is my imaginary name that
run luatex (for example on my system
luatex --fmt="/opt/luatex/minimals/tex/texmf-cache/luatex-cache/context/4330c3ed7721ca11f9d108c60c58eea4/formats/cont-en"
--lua="/opt/luatex/minimals/tex/texmf-cache/luatex-cache/context/4330c3ed7721ca11f9d108c60c58eea4/formats/cont-en.lua"
"./test.tex"
)
but also check conditions to that change
finish to true
and possible write intermediate files.

So,as far I know, each run is a new process: there is no a master
process that spawns new children ,
and no definitions are kept in memory between Lua(TeX) runs.

-- 
luigi
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