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Re[2]: two file time questions

From: chris lueders <svn-list_at_cxxl.de>
Date: 2005-05-27 10:03:55 CEST


Wednesday, May 25, 2005, 9:41:55 PM, "Ben Collins-Sussman" wrote:

>> i guess svn uses the file time to speed up it's diff process. fine.
>> but why doesn't it use the file size as well?

> It does use the filesize, but only later on.

> The algorithm is:

> if (timestamp hasn't changed)
> return NO_CHANGE;
> else if (filesize has changed)
> return CHANGED;
> else
> compare byte-by-byte.

why not use

   if (filesize has changed)
      return CHANGED;
   else if (timestamp hasn't changed)
      return NO_CHANGE;
      compare byte-by-byte.

that will not change the runtime in any significant amount and be
safer, or am i missing a detail?

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Received on Fri May 27 11:58:18 2005

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