Re: Asynchronous structured exception handling (SEH) in TortoiseProc (/EHa)

On 25.02.2016 10:37, Ivan Zhakov wrote:
>> the log cache is optimized for speed. For example, you can show the log for
>> the whole KDE or Apache repository (including all subproject). Then show the
>> log again and you get *all* entries within about two/three seconds.
>> But for more details, you have to ask Stefan Fuhrmann ;)
>
> SQLite is very performant when there's little concurrency (as it is
> with the log caching). I wonder, what was the reason of not using it
> for this purpose and re-implementing everything manually.

I think one reason was also memory use: if you have the whole log data
for e.g. the Apache repository in memory, that's quite a lot.

> Btw we started to convert some abort() calls in status-fetching code
> to normal errors in Subversion.

Finally!
I've asked for this many, many times until I gave up arguing...

> It took a little bit longer than I expected but as of r27210 log cache
> should gracefully handle most common database corruptions. There are
> still some cases when TortoiseSVN trunk will crash with a corrupted
> log cache, but TortoiseSVN 1.9.3 may also crash in these cases. I'm
> going to fix these edge cases later.

I've checked your commits and I agree it's much better now.

> I disabled asynchronous structured exception handling (SEH) in
> TortoiseProc in r27211.
>

Thanks!

> What do you think about backporting these changes to 1.9.x? Changes
> are not small, but they fix real crashes.

I think we should wait for about a week: I'd like to have a nightly
build in use here for a while before we merge those changes back.

And about merging back: would you do that? Not sure which revisions you
want to merge...

Stefan

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