Multiple Threads on Windows

["Zeinert, Holger" <Ho...@lms-gmbh.de>]

Hi,

I'm using Apache 1.3.26 on Windows XP together with mod_dtcl. It runs rather
stable, but sometimes apache crashes or the .ttml script gets problems
accessing global variables. This happens ever now an then, but now I got
this every time I use a page with FRAMEs. Both FRAMESETs are created
dynamically through mod_dtcl, but most of the time they were not displayed
correctly. They give TCL errors accessing global variables

can't read "ENVS(SCRIPT_FILENAME)": no such variable

sometimes messages like

HTTP/1.1 200 OK Date: Fri, 04 Oct 2002 07:37:24 GMT Server: Apache/1.3.26
(Win32) mod_dtcl Connection: close Transfer-Encoding: chunked, chunked
Content-Type: text/html 

or apache crashes.

The solution is to configure apache to use a Child for every request and to
use only one thread per child. Then, everything works fine, but of course it
slows down a bit.

Can anybody help with this? What did I do wrong? Is mod_dtcl thread-safe?
Obviously, a page with FRAMEs will request two pages (both FRAMESETs) at
almost the same time.

Best regards
Holger
 ____________________________________________________________________
|
| Holger Zeinert   -   Development Manager CAE Division
|____________________________________________________________________
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Re: Multiple Threads on Windows

["David N. Welton" <da...@dedasys.com>]

"Zeinert, Holger" <Ho...@lms-gmbh.de> writes:

> Can anybody help with this? What did I do wrong? Is mod_dtcl
> thread-safe?  Obviously, a page with FRAMEs will request two pages
> (both FRAMESETs) at almost the same time.

I will look into this more, but I would be curious if Rivet works on
that system.  With the time I have right now being rather limited,
Rivet is getting just about %100 of my efforts.

Offhand, I can tell you that Tcl itself, when it does threads, creates
a seperate interpreter per thread, so that might be problematic.  Can
you tell me more about how 1.3 works with windows? I'm afraid I'm a
bit in the dark with regards to windows.

I do have an XP computer at work that I could set up to debug this on,
but I'd like some more information first.

Thanks,
-- 
David N. Welton
   Consulting: http://www.dedasys.com/
     Personal: http://www.dedasys.com/davidw/
Free Software: http://www.dedasys.com/freesoftware/
   Apache Tcl: http://tcl.apache.org/

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