[Insight-developers] Question about delete on VC++

[Jisung Kim]

I think the previous description is confusing.

The tree generator creates the k-d tree and the normal
pointer to the tree is passed to the
itkKdTreeBasedKmeansEstimator. and When the tree
generator is destroyed, its destructor calls
DeleteNode method of itkKdTree.

--- Jisung Kim <bahrahm@yahoo.com> wrote:
> Yes, the tree was created by the
> itkWeightedCenteroidKdTreeGenerator and the deletion
> logic is inside of the itkKdTree.
> 
> Is it a problem?
> 
> Thanks,
> 
> 
> --- "Miller, James V (Research)"
> <millerjv@crd.ge.com>
> wrote:
> > Another thought.  Is the data allocated in one
> > thread and destroyed
> > in another thread?
> > 
> > 
> > 
> > > -----Original Message-----
> > > From: Miller, James V (Research) 
> > > Sent: Friday, September 27, 2002 12:07 PM
> > > To: 'Jisung Kim'; insight-dev-list
> > > Subject: RE: [Insight-developers] Question about
> > delete on VC++
> > > 
> > > 
> > > Strange.  If we were building Dlls, I would say
> > that maybe we were
> > > allocating nodes in one DLL and deallocating
> them
> > in another DLL.
> > > (I think each DLL has its own heap management).
> > But since we are 
> > > not building DLLs, then that is not the problem.
> > > 
> > > Have you run with VC the version that prints out
> > all the node
> > > allocation and deletions?
> > > 
> > > Is there anything "inside" a node that is not
> > being deleted? 
> > > Perhaps a 
> > > subitem is missing a destructor that needs to do
> > something 
> > > that another
> > > compiler is providing by default.
> > > 
> > > 
> > > 
> > > 
> > > Friday, September 27, 2002 10:16 AM
> > > > To: insight-dev-list
> > > > Subject: [Insight-developers] Question about
> > delete on VC++
> > > > 
> > > > 
> > > > Hi.
> > > > 
> > > > I have a question for memory deallocation in
> > VC++.
> > > > 
> > > > Currently, my
> itkKdTreeBasedKmeansEstimatorTest
> > is
> > > > leaking memory on VC++ machine. It seems like
> > that the
> > > > some of the k-d tree nodes has not been
> deleted.
> > > > However, On linux, it didn't have any leak. I
> > traced
> > > > the creation and deletion of nodes by print
> out
> > the
> > > > address of each nodes. And the result shows
> > perfect
> > > > match between creation and deletion.
> > > > 
> > > > Is there anything more than calling "delete"
> to
> > delete
> > > > an object. I think I read an article from MS
> > about
> > > > using delete and also assign zero to the
> pointer
> > to
> > > > properly delete object in a long time ago. Is
> it
> > the
> > > > case? Should I assign zero to the pointer
> after
> > > > calling delete?
> > > > 
> > > > Thank you,
> > > > 
> > > > 
> > > > 
> > > > =====
> > > > Jisung Kim
> > > > bahrahm@yahoo.com
> > > > 106 Mason Farm Rd.
> > > > 129 Radiology Research Lab., CB# 7515
> > > > Univ. of North Carolina at Chapel Hill
> > > > Chapel Hill, NC 27599-7515
> > > > 
> > > >
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> 
> =====
> Jisung Kim
> bahrahm@yahoo.com
> 106 Mason Farm Rd.
> 129 Radiology Research Lab., CB# 7515
> Univ. of North Carolina at Chapel Hill
> Chapel Hill, NC 27599-7515
> 
> __________________________________________________
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=====
Jisung Kim
bahrahm@yahoo.com
106 Mason Farm Rd.
129 Radiology Research Lab., CB# 7515
Univ. of North Carolina at Chapel Hill
Chapel Hill, NC 27599-7515

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