Zoran, Jim
thanks very much for suggestions!
I think I figured it out.
The code which was executing in the thread concluded with "exit" tcl command.
I got it replaced with "return" and it seems not to be crashing anymore.
However, it would be probably a good idea to disable/rename "exit" for
the code executed in threads created by ns_thread. Not sure if this
shall be submitted as an "enhancement"-level bug.
Thanks,
~ Alex.
On 11/1/06, Alex <[EMAIL PROTECTED]> wrote:
Jim,
I tried in on the command line, seems to be my case :)
However, I run aolserver on debian, via /etc/init.d/aolserver,
Which basically invokes /usr/lib/aolserver4/bin/nsd.
How do I make it use nstclsh instead of tclsh ?
I don't see any options for that.
Thanks,
~ Alex.
On 11/1/06, Jim Davidson <[EMAIL PROTECTED]> wrote:
> Hi,
>
> I think this is related to the comment I added to the RELEASE notes:
>
> * Loading libnsd into a tclsh and then creating new threads with
> the ns_thread command will result in a crash when those threads
> exit. The issues has to do with finalization of the async-cancel
> context used to support the new "ns_ictl cancel" feature. This bug
> is not present when using the "nstclsh" binary.
>
>
> The issue above, where Tcl is initialized before AOLserver by loading
> libnsd into tclsh, results in Tcl thread local storage being
> finalized before AOLserver's context which includes a pointer to an
> async handler.
>
> Now, that's not what you're doing here but perhaps TclX is having the
> same effect. I haven't looked at TclX for sometime so I can't recall
> what it would be using an async handler for -- perhaps you could dig
> through the code and comment it out as the async handler stuff was
> really designed for Unix signal-related things which aren't common in
> multi-threaded AOLserver.
>
> Alternatively, Tcl could be fixed to avoid freeing itself before
> AOLserver or any other extension. Unfortunately, that could be a big
> job -- the Tcl core is already riddled with a lot of code to try to
> manage the order of finalization.
>
> -Jim
>
>
>
>
>
>
> On Nov 1, 2006, at 5:35 PM, Zoran Vasiljevic wrote:
>
> > On 01.11.2006, at 23:27, Alex wrote:
> >
> >> Hi,
> >>
> >> I am getting yet another crash in AOLServer 4.5.0.
> >> This time it crashes after exiting from threads started with
> >> "ns_thread begin" or "ns_thread begindetached".
> >>
> >> Any Suggestions?
> >>
> >> Thanks,
> >> ~ Alex.
> >>
> >> Program received signal SIGSEGV, Segmentation fault.
> >> [Switching to Thread 1086359904 (LWP 19612)]
> >> 0x00002aaaaae6c2a7 in Tcl_AsyncDelete (async=0x54e6c0) at
> >> /srv/DIST/tcl8.4.13/unix/../generic/tclAsync.c:297
> >> 297 while (prevPtr->nextPtr != asyncPtr) {
> >> (gdb) back
> >> #0 0x00002aaaaae6c2a7 in Tcl_AsyncDelete (async=0x54e6c0) at
> >> /srv/DIST/tcl8.4.13/unix/../generic/tclAsync.c:297
> >> #1 0x00002aaaad48190e in TclX_SelectInit () from /usr/lib/
> >> libtclx8.4.so.1
> >
> > I'm not sure TclX is thread-safe...
> >
> > Cheers
> > Zoran
> >
> >
> > --
> > AOLserver - http://www.aolserver.com/
> >
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>
>
> --
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>
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