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To:	<cygwin-developers AT cygwin DOT com>
Subject:	Re: Proposal: check and read /etc/{passwd,group} less frequently.
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From:	Kazuhiro Fujieda <fujieda AT jaist DOT ac DOT jp>
Date:	14 Sep 2001 16:33:05 +0900
In-Reply-To:	"Robert Collins"'s message of Fri, 14 Sep 2001 16:40:43 +1000
Message-ID:	<s1su1y6qlam.fsf@jaist.ac.jp>
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>>> On Fri, 14 Sep 2001 16:40:43 +1000
>>> "Robert Collins" <robert DOT collins AT itdomain DOT com DOT au> said:

> How often is internal_getlogin called relative to get(p|g)w*?

It is in set{g,u}id and uinfo_init. At the user's point of view, 
the cache is updated only when they execute another command.

> I don't see how they would no longer need thread protection.
> internal_getlogin could be updating the cache while a user thread calls
> getpwuid.

It is nonsense or impossible that a user thread calls get{p,g}w*
in set{g,u}id and uinfo_init.
____
  | AIST      Kazuhiro Fujieda <fujieda AT jaist DOT ac DOT jp>
  | HOKURIKU  Center for Information Science
o_/ 1990      Japan Advanced Institute of Science and Technology

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