Hello David,
My problem is soloved perfectly.
Thank you very much for your kind advise.
----- Original Message -----
From: "David J Craigon" <[EMAIL PROTECTED]>
To: <[EMAIL PROTECTED]>
Sent: Friday, June 06, 2003 7:18 PM
Subject: Re: How to release memory
> Hello Hamada-san,
> XMLString::transcode produces a string which belongs to you, and you
> need to delete after use. So if you use something like:
>
> DOMDocument* doc = impl->createDocument( XMLString::transcode("aaaaa" ),
> XMLString::transcode("bbbbb:ccccc"), NULL );
>
> the two calls to XMLString::transcode leak memory, since they create a
> string which is passed to the function, but it is never deallocated.
>
> In this case, it you can use delete[], but in line with other Xerces-C
> practise, you are better off using XMLString::release().
>
> What you need is something like:
> #include <xercesc/dom/DOM.hpp>
> #include <xercesc/util/XMLString.hpp>
> #include <xercesc/dom/DOMImplementation.hpp>
> #include <xercesc/dom/DOMImplementationRegistry.hpp>
> #include <xercesc/util/PlatformUtils.hpp>
>
> using namespace std;
> using namespace xercesc;
>
> #define X(x) XMLString::transcode(x)
>
> int main() {
> for (int i=0;i<5000000;i++) {
> XMLPlatformUtils::Initialize();
> {
> XMLCh *temp1;
> XMLCh *temp2;
>
> temp1=X("");
> DOMImplementation* impl =
> DOMImplementationRegistry::getDOMImplementation(temp1);
> XMLString::release(&temp1);
>
> temp1=X("aaaaa" );
> temp2=X("bbbbb:ccccc");
> DOMDocument* doc = impl->createDocument( temp1,
> temp2, 0);
> XMLString::release(&temp1);
> XMLString::release(&temp2);
>
> DOMElement* drugMLElement = doc->getDocumentElement();
>
> temp1=X("dddddd");
> temp2=X("http://eeeee";);
> drugMLElement->setAttribute( temp1,temp2);
> XMLString::release(&temp1);
> XMLString::release(&temp2);
> doc->release();
>
> }
> XMLPlatformUtils::Terminate();
> }
> return 1;
> }
>
> This compiles for me without similar problems.
>
> David
>
>
> Michiaki HAMADA / FUJI-RIC wrote:
> > Hello everyone.
> >
> > By seeing unix "top" command,
> > I found out the thing that memories kept increasing
> > in my sample program (which is mentioned in the end
> > of this mail).
> >
> > By the way I am using xerces-c++ verion 2.2.0 on
> > Redhat Linux 7.3.
> >
> > Where is wrong in my program ?
> >
> > ------ sample program starts --------
> >
> > #include <xercesc/dom/DOM.hpp>
> > #include <xercesc/util/XMLString.hpp>
> > #include <xercesc/dom/DOMImplementation.hpp>
> > #include <xercesc/dom/DOMImplementationRegistry.hpp>
> > #include <xercesc/util/PlatformUtils.hpp>
> >
> > using namespace std;
> > using namespace xercesc;
> >
> > #define X(x) XMLString::transcode(x)
> >
> > int main() {
> > for (int i=0;i<5000000;i++) {
> > XMLPlatformUtils::Initialize();
> > {
> > DOMImplementation* impl =
> > DOMImplementationRegistry::getDOMImplementation(X(""));
> > DOMDocument* doc = impl->createDocument( X("aaaaa" ),
> > X("bbbbb:ccccc"), NULL );
> > DOMElement* drugMLElement = doc->getDocumentElement();
> > drugMLElement->setAttribute( X("dddddd"),
> > X("http://eeeee";) );
> > doc->release();
> >
> > }
> > XMLPlatformUtils::Terminate();
> > }
> > return 1;
> > }
> >
> > ------------
> > M. Hamada
> >
> > ---------------------------------------------------------------------
> > To unsubscribe, e-mail: [EMAIL PROTECTED]
> > For additional commands, e-mail: [EMAIL PROTECTED]
> >
>
>
>
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