On Sunday 25 March 2001 16:27, you wrote:
> Found the problem with your signal 11 with strange traces from inside
> LinuxThreads. This was a hard concurrency bug - the problem was that a
> memory reference passed to pthread_create was getting invalidated by the
> thread that pthread_create was launching before pthread_create would right
> to that value. Took me a while to figure this out - I have scrutinized the
> entire thread creation mechanism in LinuxThreads suspecting a bad mmap or
> munmap somewhere before I realized the problem had nothing to do with
> LinuxThreads internal code.
>
> I believe the problem has existed for as long as MySQL has been around -
> back then the machines were just not fast enough to make this condition
> happen frequently enough for someone to be able to create a repeatable
> case. I have fixed it by extending the critical region. Here is the patch:
Fantastic! I take it you won't be wanting the better back trace then?
I'll get back to you once I've confirmed that it's fixed it in our case.
Thanks a lot for the help. You guys rock.
--
Voytek Lapinski [EMAIL PROTECTED]
Software Engineer Hotkey Internet
ph: 03 9923 3656 mob: 0427 469 891
fax: 03 9923 3388 www.hotkey.net.au
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