[Spambayes] locking pickle/dbm against concurrent access?

Skip Montanaro skip at pobox.com
Mon Jan 20 18:34:52 EST 2003

    >>>> Skip Montanaro wrote
    >> Depending how your training works you might wind up copying a 20+MB
    >> file for each message.

    Anthony> Copying? When? You'd write out the new pickles, sure, but you
    Anthony> have to do that, anyway.

How do you get the temp file from the real file without copying it?  If I
understand the way things work, you'd do something like

    * copy real to temp
    * train on new messages
    * update temp
    * move temp back to real (the atomic part we all want)


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