[ace-users] Segmentation faultinACE_Select_Reactor_T::handle_error (with ACE 5.5.9)

Jules d'Entremont Jules.dEntremont at SolaceSystems.com
Fri Jun 29 13:26:50 CDT 2007

I'm getting -1 returned from remove_handler().  I assume that's bad.
How can I find out why it's failing?


-----Original Message-----
From: Steve Huston [mailto:shuston at riverace.com] 
Sent: Friday, June 29, 2007 2:05 PM
To: Jules d'Entremont; ace-users at cse.wustl.edu
Subject: RE: [ace-users] Segmentation
faultinACE_Select_Reactor_T::handle_error (with ACE 5.5.9)

Hi Jules,

> Actually, I spoke too soon.  Here's something I got from valgrind:
> ==29898== Invalid read of size 4

Yup, that'd do it ;-)

> This seems to indicate that a MessageReader (which is derived from
> ACE_Event_Handler) gets deleted while still registered with the

Yes, exactly.

> But it should get cleaned up in handle_close():

The evidence suggests that something remains not cleaned up. I'd have
a closer look at the remove_handler() call with an eye toward how a
handle could get left registered.


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