[plt-scheme] dynamic-wind & kill-thread

It only kills threads when the connection times out.

Jay

On Tue, Apr 21, 2009 at 4:50 PM, Ryan Culpepper <ryanc at ccs.neu.edu> wrote:
> spgsql connections are definitely not kill-safe. Does the web server, in
> fact, kill servlet threads under some circumstances (like reload)?
> I don't have time right now to write a kill-safe proxy, but I would be happy
> to accept one and add it to the package.
> Ryan
>
> On Apr 21, 2009, at 3:44 PM, YC wrote:
>
> Oops - did not cc plt-scheme.
>
> ---------- Forwarded message ----------
> From: YC <yinso.chen at gmail.com>
> Date: Tue, Apr 21, 2009 at 12:42 PM
> Subject: Re: [plt-scheme] dynamic-wind & kill-thread
> To: Robby Findler <robby at eecs.northwestern.edu>
>
>
>
> On Tue, Apr 21, 2009 at 12:09 PM, Robby Findler
> <robby at eecs.northwestern.edu> wrote:
>>
>> Well, it is the case that if you're using non-kill-safe- code (as it
>> sounds like spqsql is), then you cannot kill those threads.
>
> The threads are initiated and managed from web-server.  I don't know how it
> handles interrupted connections (I generally reproduce the bug via
> refreshing browser quickly), but these threads appears outside my apps
> control.
>
>> You might be able to build a kill-safe wrapper for that code, however.
>> That is, put all of the code that queries the database into a single
>> thread and then communicate with that thread in a kill-safe manner
>> (much like the way the manager thread manages the queue in our kill
>> safe paper).
>
> Yeah that's my current plan as a stop gap.  Eventually I think the kill-safe
> code should belong in spgsql package itself.
>
> Is Trac still the right place to file bugs?  I have bugs filed 5 months ago
> not being touched.
>
> Thanks,
> yc
>
>
> _________________________________________________
>  For list-related administrative tasks:
>  http://list.cs.brown.edu/mailman/listinfo/plt-scheme
>
>
> _________________________________________________
>  For list-related administrative tasks:
>  http://list.cs.brown.edu/mailman/listinfo/plt-scheme
>
>



-- 
Jay McCarthy <jay at cs.byu.edu>
Assistant Professor / Brigham Young University
http://teammccarthy.org/jay

"The glory of God is Intelligence" - D&C 93