HEADS UP - master/slave ports
Cyrille Lefevre
clefevre-lists at 9online.fr
Thu Jun 17 20:30:22 GMT 2004
"Dan Langille" <dan at langille.org> wrote:
> On 17 Jun 2004 at 16:50, Cyrille Lefevre wrote:
[snip]
> > there is no need to fork any sub-processes :
> >
> > # Try to determine if we are a slave port. These variables are used by
> > # FreshPorts and portsmon, but not yet by the ports framework itself.
> > _MASTERDIR= ${MASTERDIR:C,/([^/]+)/\.\.,,:C,/([^/]+)/\.\.,,}
> >
> > .if ${_MASTERDIR} != ${.CURDIR}
> > IS_SLAVE_PORT?= yes
> > # take your pick :
> > # _PORTSDIR= ${_MASTERDIR:C|([^/]+/[^/]+)/?$||}
> > # MASTERPORT= ${_MASTERDIR:C|${_PORTSDIR}||}
>
> real 15m24.018s
> user 10m39.785s
> sys 4m35.054s
>
> > # or
> > MASTERPORT= ${_MASTERDIR:H:T}/${_MASTERDIR:T}
>
> real 15m23.343s
> user 10m39.088s
> sys 4m34.888s
>
> > .else
> > IS_SLAVE_PORT?= no
> > MASTERPORT=
> > .endif
>
> These appear to be slightly faster than the previous stats I posted.
> Everything is pratically identical in user time. sys is where the
> savings are being made.
it's strange that this code (w/ no fork) is not much faster than 2 forks !
Ruslan, do you have any idea about that ?
CC -make maintainer
Cyrille Lefevre.
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