Thanks Phil for the idea, this could indeed work.
[ Been using something similar for real .dbfs.
It was quite though to implement properly, but luckily
for mem files some of the problem cases can be disregarded. ]
Brgds,
Viktor
On 2009 Oct 5, at 08:33, Phil Barnett wrote:
On Tue, 2009-09-22 at 18:23 +0200, Viktor Szakáts wrote:
Yes, with real FS it's okay with our APIs, but
such date/time/random based solution aren't rock
solid (uniqueness isn't guaranteed), so indeed
something better would be good.
pseudocode
do
RandomFileName = SomeRandomFileNameCreator(basename)
if not exist RandomFileName
exit
end if
loop
There's still a very very small chance of a race condition, but unless
you are going to use a semaphore supplied by the OS or Server,
that's a
cross you have to bear. But it's a very tiny race condition and I've
never found it to be a problem in production code, especially if the
random number is large and is properly reseeded.
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