[omniORB] Re: 3 questions about CORBA, IIOP, and omniORB

[Jon Biggar]

Thomas Zumbiehl wrote:
> Hi,

[snip]

> So, first question : I there any kind of way omniORB could delete an 
> omniRemoteIdentity where it should not, or is it possible that it is 
> displaying wrong information ?
> The fact is that the same sequence occurs at both one of the two 
> failures. And omniORB says, two times, that the omniRemoteIdentity is 
> deleted, while there should be only one holded (set earlier in the 
> application) ?

My best guess is that you have a reference count management error on an 
object reference that you want to use.

> Second question : What is the meaning of the 28 bytes chunk sent ? It 
> seems to be understood as a reply to the getSelectResult() request...

Yes.

> Third question : My server needs to hold interfaces for a while, but 
> those need to be deactivated while they are not used (I use a close() 
> request to tell an interface that it can be destroyed). How should I 
> handle the servant activation/deactivation ?
> For now, I use the POA's activate_object() and deactivate_object() 
> methods, but I am now thinking I can be wrong.
> For instance, I know that calling the _this() method on a servant will 
> automaticaly activate it, but how can I deactivate it ?

I'd recommend reading "Advanced CORBA Programming with C++" by Henning 
and Vinoski.  They have an extensive section about server design and 
policy selection that answers your questions.

-- 
Jon Biggar
jon at biggar.org
jon at floorboard.com