Re: BBv2 long time to do nothing... (was Re: [BBv2] [msvc] response files)

From: Kevin Wheatley (hxpro_at_[hidden])
Date: 2005-09-28 03:27:33

Vladimir Prus wrote:
> Please go to Boost's top Jamfile.v2 find the "install" or "install-headers"
> target (depends on Boost version), locate the
> 
> [ glob $(dirs)/$(patterns) ]
> 
> in the target definition and remove that text. Then try again and report the
> time.

Vladimir,

yep, I think that is certainly the bulk of the time - without doing
exhaustive repeat runs, there is not much difference between removing
that line, and my own version it. It's the glob that talkes all the
time (>60s). This is running on a local NTFS filesystem, 

So does that mean that some form of 'glob caching' is needed? Perhaps
checking on the time stamps of the directories involved and rebuilding
the glob when its updated, or a lazy evaluation of it, in that I'm not
interested for instance in installing unless I explicitly ask to do
so.

I'd certainly find it a pain not using the glob feature, having to
list all my unit tests separately for instance.

Thanks

Kevin

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