Re: [xml] Questions about libxml as a DLL on win32.

[Steven M Cherry <smc cherrys org>]

Well, then I guess we can't agree on this.  Here's a makefile for
MSVC that shows the same results as the makefile for borland.

Makefile.msvc
-------------
#
# This is the unix build version of the makefile for SolitanLib
###############################################################

CC=cl.exe
OHEXT=obj

CFLAGS=/W3 /MT /O2 /GX /D "WIN32" /D "NDEBUG" \
        /D "_WINDOWS" /D "_MBCS" /D "_USRDLL" \
        /FD
LFLAGS=

.cpp.obj:
        $(CC) $(CFLAGS) /c $<

DOTOH=dllfunctions.$(OHEXT) main.$(OHEXT)

all: $(DOTOH)
        $(CC) $(CFLAGS) /LD /Fedllfunctions.dll $(DOTOH) $(LFLAGS)
        $(CC) /Fetestdll.exe main.$(OHEXT) $(LFLAGS) dllfunctions.lib

clean:
        del *.$(OHEXT)
        del dllfunctions.dll
        del dllfunctions.lib
        del testdll.exe


All files are compiled with the same flags, and yet allocating memory
in the dll and freeing it in the main program causes memory leaks
and application crashes.

Steven

>       
>
> > Did you compile and run my sample program ?  It demonstrates my point
> > pretty well.
>
> No, I do not have time.  I can only tell you that your explanation is
> incorrect.
>
> > Note, also that this problem can often be a silent one.  Your app might
> > not crash due to memory problems, but does it leak?  Have you watched
> > your memory traces to verify that everything is released properly, and
> that
> > your memory useage actually goes down?
>
> There are no memory leaks.  libxml2 has an extremely powerful mem debug
> that, when enabled, can track every xmlMalloc() made.  You can can a summary
> function that will show every call to xmlMalloc that wasn't xmlFree'ed.  
>
> I can tell you that using libxml2 to process through 100,000 lines of
> database i/o in the life of the program not a byte of memory is leaked.
>
> _______________________________________________
> xml mailing list
> xml gnome org
> http://mail.gnome.org/mailman/listinfo/xml

-- 
==================================================================
== Steven M. Cherry                            smc cherrys org  ==
==                 http://family.cherrys.org/steven/index.html  ==
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