[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