[U-Boot] [PATCH 3/5] Add hash table support as base for new environment code

[Mike Frysinger <vapier@gentoo.org>]

On Wednesday, December 08, 2010 05:02:38 Wolfgang Denk wrote:
> Mike Frysinger wrote:
> > unless i'm missing something, the non-reentrant versions operate on a
> > single shared hash table.  so while this works today because there is
> > only one
> 
> Correct.
> 
> > consumer (the env code), wont this cause problems as soon as someone else
> > tries to use the non-reentrant hash table code ?  as such, wouldnt it
> > make sense to punt all of the non-reentrant versions and thus force
> > everyone to maintain their own "struct hsearch_data" instance ?
> 
> This could be done, but I don't see an immediate need.

off the top of my head:
 - it isnt obvious to people today that this issue exists, so anyone 
attempting to use the fun new hashtable code could conceivably use it without 
running into a problem (as long as their keys dont happen to collide with env 
names).  so people could possibly waste quite a bit of their time trying to 
track down bugs that only crop up when certain env vars are set.
 - i imagine a bit of space is being wasted here.
 - i re-implemented env-autocomplete, but i need access to the hashtable 
structure where everything is stored.
-mike
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