this is solved by one of two methods:
1-) require the caller of gethostbyaddr() to supply a pointer to
a hostent struct which will be filled.
or 2-) the library uses thread specific storage which is re-used in
each call.
From: Joe Groff <og...@humboldt1.com>
Reply-To: og...@humboldt1.com
To: bmcgo...@cisco.com
CC: d...@trinsec.com, hack...@freebsd.org
Subject: Re: gethostbyaddr() and threads.
Date: Mon, 9 Aug 1999 14:21:38 -0700 (PDT)
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---Brian McGovern said:
> [snip]
>
> gethostbyaddr... actually, most of the gethostby* functions... are not
> thread safe. They all use a static buffer in the library.
>
> Therefore, with threads, if you don't take precautions, I'd expect your
> results to be odd.
> -Brian
>
Couldn't this be easily fixed? I haven't looked at the source yet, but I
believe you could replaced the static buffers with a dynamically-allocated
list
of buffers, with one for each thread using the gethost functions. Or
perhaps
you could just eliminate all the static stuff altogether?
-Joe
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