On Thu, Jul 24, 2008 at 07:28:41PM -0400, Joey Hess wrote:
> Or one could teach busybox shell to jump to the in-busybox
> implementations of cat and all other busybox commands, thereby
> eliminating every exec in partman except for those needed to run
> subshells. (It'd still have to fork, but linux can fork very fast, and
> most shell tricks above involve a fork due to the use of subshells.)
Just for the record, it seems that busybox upstream is working on that:
config FEATURE_SH_NOFORK
bool "Run 'nofork' applets directly"
default n
depends on (MSH || LASH || HUSH || ASH) && FEATURE_PREFER_APPLETS
help
This option causes busybox shells [currently only ash]
to not execute typical fork/exec/wait sequence, but call <applet>_main
directly, if possible. (Sometimes it is not possible: for example,
this is not possible in pipes).
This will be done only for some applets (those which are marked
NOFORK in include/applets.h).
This may significantly speed up some shell scripts.
This feature is relatively new. Use with care.
It seems to have been added in busybox 1.11.
Cheers,
--
Jérémy Bobbio .''`.
lunar@debian.org : :Ⓐ : # apt-get install anarchism
`. `'`
`-
Attachment:
signature.asc
Description: Digital signature