Weird file mis-selection problem

[Sven <sv...@online.de>]

Hello list-listeners,

at first thank you all for providing Rivet.

We have a weird problem and I hope you can help: The Tcl 
interpreter/Rivet is selecting the wrong (sourced) file depending on a 
previously executed request. If you have files with the same name but 
within different directories it may happen that the wrong code is 
executed if these files are sourced.

I don't know if Rivet or TCL is the reason for the problem. I've running 
rivet 2.0.4 with Tcl 8.4.19 within Apache 2.2.17. RivetServerConf 
CacheSize is already set to 0.

I've tried to simplify the problem as most as possible - I have two 
different directories containing Tcl scripts:
* AAA/handleAAA.ttml
* AAA/include.ttml
* BBB/handleBBB.ttml
* BBB/include.ttml

handleBBB.ttml is simply sourcing the include.tcl
<?
source include.tcl
?>

Both include.tcl are putting some messages on stdout. Only 
handleAAA.ttml has some procedures with some commands (it is the 
remainder of a more comprehensive file):
<?
#hgetvars
set myVARS(aParam) XYZ

proc procA {} {
     upvar myVARS(some_unused) some_unused_inner
     set args {}
     regsub astring $args globalvar_local args
}

proc procB { } {
     upvar myVARS myVARS
     set unused_param $myVARS(aParam)
     source include.tcl
     procA
}

procB

?>
(If you want I can provide you the complete code for all files.)

If there are multiple Apache instances listening on one port I loop 
through it doing multiple requests, e.g.:
for i in {1..10} ; do wget -O- -q -S 
"http://localhost/sventemp/AAA/handleAAA.ttml" ; done
for i in {1..10} ; do wget -O- -q -S 
"http://localhost/sventemp/BBB/handleBBB.ttml" ; done

In the end I can see that there are some requests are processed as 
expected, others not. This depends on which request was executed 
previously by the specific instance.

The only way I've found to circumvent the faulty behavior is to set the 
option "MaxRequestsPerChild 1".
Does anyone see other options?

What is the cause of this behavior? Is it a bug?

Your help is very much appreciated.
Sven






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