Hi,
the lists themselves are only released when the document is
released. They are however cached based on the root node, name and
namespace.
Gareth
On Tue, 8 Jul 2003, jiang lei wrote:
> Hi Gareth,
>
> Thanks for your answer.
>
> My question was about the memory allocation of DOMNodeList itself.
> As I use DOMNode::getElementsByTagname() a lot, sometimes even in a loop,
> what I am concerning indeed is when the LIST will be released. So after I
> post my question I created a test program to see how much memory it will
> take to call getElementsByTagname() for 10000 times. The result is quite
> satisfying and I don't worry about it anymore. However, I'm still quite
> interested in how it is done.
>
> Best Regards
>
> Lei
>
> ----- Original Message -----
> From: "Gareth Reakes" <[EMAIL PROTECTED]>
> To: <[EMAIL PROTECTED]>
> Sent: Monday, July 07, 2003 6:14 PM
> Subject: Re: DOMNodeList memory allocation?
>
>
> > Hi,
> > the nodes point to each other and so there is not a large storage
> > of node pointers in a container. Is this the information you want?
> >
> > Gareth
> >
> >
> > On Fri, 4 Jul 2003, jiang lei wrote:
> >
> > > Hi everybody,
> > >
> > > Everytime I use the method DOMNode::getElementsByTagname() I am quite
> > > worried about the memory allocation. That method returns a pointer to
> > > DOMNodeList, which stores node pointers in a temporary place.
> > >
> > > So it came to me like there are possibly 2 pattern for the making of a
> > > DOMNodeList:
> > >
> > > 1. the newly created DOMNodeList takes memory from a memory pool or
> register
> > > itself to a memory manager. When the node or document is released,
> > > corresponding DOMNodeList will be destructed as well.
> > >
> > > 2. there can only be 1 instance of a DOMNodeList at a time for each
> DOMNode.
> > > Each time you use getElementsByTagname(), the old will be gone and a new
> > > list will be created in its place.
> > >
> > > Am I right? Or is there another pattern?
> > >
> > > Thanks a lot for your attention.
> > >
> > > Best Regards
> > >
> > > Lei
> > >
> > >
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> > >
> > >
> >
> > --
> > Gareth Reakes, Head of Product Development +44-1865-203192
> > DecisionSoft Limited http://www.decisionsoft.com
> > XML Development and Services
> >
> >
> >
> >
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> > To unsubscribe, e-mail: [EMAIL PROTECTED]
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> >
> >
> >
>
>
> ---------------------------------------------------------------------
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>
>
--
Gareth Reakes, Head of Product Development +44-1865-203192
DecisionSoft Limited http://www.decisionsoft.com
XML Development and Services
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