Re: DispatchPtr not releasing

hmm, I'm not very familiar with this discussion list, but nobody answers
questions?



----- Original Message -----
From: "Normand Mongeau" <[email protected]>
To: <[email protected]>
Sent: Thursday, September 01, 2005 4:32 PM
Subject: Re: [JAWIN] DispatchPtr not releasing


> It's not easy to post code. I'll try to explain more in depth.
>
> DispatchPtr instances are kind of "smart" instances, because somewhere
> deep
> in the machinery of COM a Release gets sent when instances go out of
> scope.
> This is easily verified with the following: create a COM class, and
> implement a FinalRelease method just to track when it gets called.  So if
> you have code like this:
>
> instA = new A().
>
> when the instA variable goes out of scope the FinalRelease method will get
> called automatically (it's called by the Release() method).
>
> My problem is that if I need to pass the A instance to another COM class,
> the A never gets finalized.  This is also easy to verify with code like
> this:
>
> instA = new A().
> instB = new B().
> instB->invokeSomeMethodPassingTheOtherInstance(instA).
>
> the finalization of the B instance will happen, but not the finalization
> of
> the A instance.
>
> This only happens through JAWIN.  It's as if an extra refCount was added
> to
> the A instance, thus not releasing it.
>
> Regards,
>
> Normand
>
> ----- Original Message -----
> From: "Morten Andersen" <[email protected]>
> To: <[email protected]>
> Sent: Thursday, September 01, 2005 11:55 AM
> Subject: Re: [JAWIN] DispatchPtr not releasing
>
>
>> Hi Norm,
>>
>> I am at least not sure I understand your problem 100%. So if possible,
>> can you please post a couple of lines of code that shows your problem
>>
>> Best Regards, and sorry for not being so quick in answering.
>> Morten
>>
>> Normand Mongeau wrote:
>>> So nobody knows about this, or did I not formulate my question clearly
>>> enough?
>>>
>>> Norm
>>>
>>> ----- Original Message -----
>>> From: "Normand Mongeau" <[email protected]>
>>> To: <[email protected]>
>>> Sent: Monday, August 29, 2005 5:36 PM
>>> Subject: [JAWIN] DispatchPtr not releasing
>>>
>>>
>>>> Hi,
>>>>
>>>> I have a problem with subclasses of DispatchPtr, which do not get
>>>> released
>>>> when they are passed as arguments of method invocations.
>>>>
>>>> To determine this, I implemented a FinalRelease method in my subclass,
>>>> and
>>>> when I instantiate my subclass and do nothing special with it, the
>>>> FinalRelease method of my COM object gets called.  But if I send the
>>>> instance as an argument to another COM object (the method does nothing
>>>> with the instance received), then the FinalRelease method of my COM
>>>> never
>>>> gets called.
>>>>
>>>> Does this ring a bell with anyone?
>>>>
>>>> Thanks,
>>>>
>>>> Norm
>>>
>>>