[xml] Re: 'RE: [xml] Initialization"'

[Kasimier Buchcik <kbuchcik 4commerce de>]

Hi,

on 4/28/2004 2:59 PM Ohad Oded wrote:

> Hi, 
> If intended to be called only once at finalization time of the library
> why isn't it called from DllMain when the reason is DLL_PROCESS_DETACH
> and xmlInitParser called when the reason is DLL_PROCESS_ATTACH?

You may want to read an existing mailing list tread on this subject for 
additional information:
http://mail.gnome.org/archives/xml/2003-August/msg00161.html

Regards,

Kasimier

> -----Original Message-----
> From: Kasimier Buchcik [mailto:kbuchcik 4commerce de] 
> Sent: Wednesday, April 28, 2004 3:36 PM
> To: Ohad Oded; xml gnome org
> Subject: Re: 'RE: [xml] Initialization"'
>
> Hi,
>
> on 4/28/2004 1:47 PM Ohad Oded wrote:
>
>
> > Hi, 
> > Now I'm experiencing problem in the following sequence (I'm using
> > WIN32):
> > Thread A calls xmlInitParser().
> > .
> > .
> > .
> > Thread A calls xmlCleanupParser().
> > .
> > .
> > .
> > Thread B calls xmlInitParser()
> >
> > The code of xmlInitParser() from thread B crashes, I think it has to
>
> do
>
> > with the fact that it's not the same thread that initially called
> > xmlInitParser() (thread A). It crashes in __xmlGenericError within
> > IS_MAIN_THREAD and the problem is that run_once_init was not set back
>
> to
>
> > 0 in xmlCleanupParser() (I'm not sure if intentionally or not).
>
>
> As said before: "xmlCleanupParser" is intended to be called only once at
>
> finalization time of the library, not in-between. Put your call of 
> "xmlCleanupParser" outside your thread mechanism, i.e. into the main
> thread.
>
>
> > on 4/28/2004 9:44 AM Ohad Oded wrote:
> >
> >
> >
> > > Hi, 
> > >
> > >
> > >
> > > I'm experiencing an access violation.
> > >
> > > When working with xmlParseFile() everything is ok.
> > >
> > > However when working with xmlReaderForMemory() I have an access
> > > violation because xmlInitParser() wasn't called.
> > >
> > > Is this intentional (meaning I have to call it myself)? 
> >
> >
> > Yes, "xmlInitParser" needs to be called to initialize the library;
>
> this 
>
> > function is reentrant, so don't care how often you call it. Some
>
> libxml2
>
> > functions call "xmlInitParser", so you were just lucky in the case of 
> > "xmlParseFile". Note that it initializes the library only, it is not 
> > designated to be called before parsing (its name is a bit misleading).
>
>
> > Additionally, "xmlCleanupParser" needs to be called to finalize the
> > library.
> >
> >
> > Regards,
> >
> > Kasimier
>
>
> Kasimier