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Re: CVS problem with ssh

From: Derek Price
Subject: Re: CVS problem with ssh
Date: Fri, 24 Jun 2005 13:48:22 -0400
User-agent: Mozilla Thunderbird 1.0.2 (Windows/20050317)

Richard M. Stallman wrote:

>    Regardless of the fact that this will usually hold true, the algorithm
>    still contains a race condition, might not hold true across diverse
>    platforms, and is not a true fix.
>I do not see the race condition.

The code currently works by making the assumption that network reads
will always return chunks of data small enough to be written to stdout
in a single call to fwrite after a single select on fileno (stdout).  As
long as network reads are always slower that writes to stdout, this
should hold true, but it does not sound like an assumption which can be
counted on to prove consistently valid across all platforms and
circumstances.  At the least there is the case where the stdout output
is being piped across an even slower network.



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