Because its not an efficient thing to do. All processes share the code of
the DLL versions of the runtime. If everyone links it his/her own copy of
it, that's kind of defeating the entire purpose of having shareable code,
and using up memory much faster.
--------------------------
Dean Roddey
The CIDLib C++ Frameworks
Charmed Quark Software
[EMAIL PROTECTED]
http://www.charmedquark.com
"Why put off until tomorrow what you can
put off until the day after tomorrow?"
----- Original Message -----
From: "Mitchell, Raymond" <[EMAIL PROTECTED]>
To: <[EMAIL PROTECTED]>
Sent: Thursday, June 14, 2001 10:36 AM
Subject: RE: Correct Way to dispose of strings from XMLString::transcode
> I am not sure. I wondered the same thing when I ran into this problem.
> Perhaps someone else knows the answer to this?
>
> Ray
>
> -----Original Message-----
> From: Bruce Bailey [mailto:[EMAIL PROTECTED]]
> Sent: Thursday, June 14, 2001 9:19 AM
> To: '[EMAIL PROTECTED]'
> Subject: RE: Correct Way to dispose of strings from XMLString::transcode
>
>
> Ray
>
> Thanks so much for the information. I ran a simple test with a
one-function
> DLL and verified that this is indeed the problem.
>
> I must be missing something however. This seems like a problem that most
> Win programmers are going to run into. Why aren't the standard
distribution
> packages for windows using static libraries rather than DLL's?
>
> Thanks,
>
> Bruce
>
> > -----Original Message-----
> > From: Mitchell, Raymond [mailto:[EMAIL PROTECTED]]
> > Sent: Wednesday, June 13, 2001 3:54 PM
> > To: '[EMAIL PROTECTED]'
> > Subject: RE: Correct Way to dispose of strings from
> > XMLString::transcode
> >
> >
> > When linking to Xerces-C, you must make sure you are linking
> > with the same
> > runtime library that the Xerces-C DLL links with. The
> > Xerces-C DLL links to
> > the multithreaded DLL version of the runtime library by
> > default. To use the
> > Xerces-C DLL as it ships, your program must link to the
> > multithreaded DLL
> > version of the runtime library as well.
> >
> > Visual C++ provides three versions of the runtime libraries:
> > multithreaded
> > DLL, multithreaded static, singlethreaded static. If your
> > program cannot be
> > linked to the multithreaded DLL runtime library, then it must
> > be linking to
> > one of the two static libraries. You cannot simply rebuild
> > the Xerces-C DLL
> > to link with the same static library as your program. This
> > is because DLL's
> > are seperately linkable units (the same as executables).
> > Even though both
> > your program and Xerces-C would be linking to the same static runtime
> > library, each would maintain its own heap. It would be
> > illegal for the
> > memory returned by Xerces-C to be deleted by your program.
> >
> > The way around this is to recompile Xerces-C as a statically
> > linked library
> > (create a new project of type "Static Library" in Visual
> > C++). Link your
> > program to the static library version of Xerces-C and
> > everything should work
> > fine. The static library version of Xerces-C will now
> > actually be part of
> > your program and hence share the same heap with it.
> >
> > I hope this helps,
> > Ray
> >
> > -----Original Message-----
> > From: Bruce Bailey [mailto:[EMAIL PROTECTED]]
> > Sent: Wednesday, June 13, 2001 2:25 PM
> > To: 'Xerces List'
> > Subject: Correct Way to dispose of strings from XMLString::transcode
> >
> >
> > Hi
> >
> > When trying to run the following program, I keep getting an
> > invalid heap
> > pointer error. This occurs whenever I try to delete either
> > the XML string
> > or the normal string. If I don't use 'delete', I get memory
> > leaks. Any
> > ideas as to what might be the problem?
> >
> > Thanks.
> >
> > Bruce
> >
> > Platform: Winnt 4.0 (not sure of sp level, but I think it's 5)
> > Compiler: vc 6.0
> > Xerces version: VER=1_4
> >
> > #include <util\XMLString.hpp>
> > #include <util/PlatformUtils.hpp>
> >
> > int
> > main(int argc, char *argv[])
> > {
> > XMLPlatformUtils::Initialize();
> >
> > XMLCh *x = XMLString::transcode("This is a test");
> > char *p = XMLString::transcode(x);
> >
> > delete x; /* delete[] x doesn't work either*/
> > delete[]p;
> >
> > XMLPlatformUtils::Terminate();
> >
> > return 0;
> > }
> >
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