Re: parallel restore vs. windows

>>>
>>> Parts of AH need deep cloning, notably the formatData member, which
>>> is done in _ReopenArchive().
>>>
>>
>> Is it okay to clone this from within the thread?
>
> I don't see why not.
>

Because another thread may be modifying the memory you are trying to
clone. If no one modifies the formatData struct, then why is it being
deep copied to begin with.

>
> The program dies with a nasty dialog box when restoring a dump of the
> regression database after the second COPY thread disconnects.

Sounds like the friendly and helpful GPF Dialog (General Protection
Fault). This is a core dump which strongly suggests your threads are
trampling over one another. Its possible that a couple threads get
fired off but upon the first thread completion, something !(deep_copied)
is freed/modified ... bang-bang your dead :o I tried to find this, but
haven't yet.

Maybe do a full deep copy in the main thread and comment out any
in-thread deep copying. I wonder if that would work with no other changes.

--
Andrew Chernow
eSilo, LLC
every bit counts
http://www.esilo.com/