Re: [xml] xmlReadMemory limitation

["Espen Ekeroth" <espen ekeroth omxgroup com>]

Could it be my use of the function:
It looks like this:



------------------------------------------------------
int OpenInterestPositions(xmlNode* a_node)
{
  xmlNode *cur_node = NULL;
  xmlNode *root_element = NULL;

  if(a_node->type == XML_TEXT_NODE){

    xmlDocPtr doc;


    doc = xmlReadMemory(a_node->content,
400000, "noname.xml", NULL, 0);
    if (doc == NULL) {
      Log_PrintFile("Failed
to parse xml document from the soap message\n");
      return -1;
    }

    root_element = xmlDocGetRootElement(doc);

    for (cur_node = root_element;
cur_node; cur_node = cur_node->next) {
      if(cur_node->type
== XML_ELEMENT_NODE) {
        
        if(strcmp(cur_node->name,"open_interest")==0){
         
if(Open_Interest(cur_node->children) != 0)
         
  goto Error;
        }
      }
    }
    xmlFreeDoc(doc);
  }
----------------------------------------------------------
The reason for using it like this is
that the xml is recevied through the csoap library from a JBoss webservice.

I have tried to do it useing "sizeof(a_node->content)"
but for some reason I only get 4 as the size (looks like the size of the
adress.  [I have also tried to get the content first using the xmlNodeGetContent()
function, but the result was the same]

/Espen
MSN: espene halden net

Daniel Veillard <veillard redhat com> 11.03.2005 10:21 Please respond to veillard

To:        Espen Ekeroth <espen ekeroth omxgroup com>         cc:        xml gnome org         Subject:        Re: [xml] xmlReadMemory limitation

On Fri, Mar 11, 2005 at 08:26:51AM +0100, Espen Ekeroth
wrote:
> On RedHat 9 i do get a problem using xmlReadMemory(). It seems like
if the 
> memory buffer size is set to a value larger than 600000 it do fail.
(no 
> coredump or anything, but the application just dies). Is this a limit
of 
> xmlReadMemory ?

  xmllint.c uses xmlReadMemory() for processing with --memory

paphio:~/XML -> ls -l dba100000.xml
-rw-rw-r--  1 veillard www 14282040 Jan  4 16:06 dba100000.xml
paphio:~/XML -> xmllint --noout --memory dba100000.xml
paphio:~/XML -> echo $?
0
paphio:~/XML ->

  i.e. I cannot reproduce your problem on Red Hat Enterprise Linux
4.

> or is it the infamous 640kb problem of x86 also affecting 
> linux?

  Certainly not, linux uses flat 32bit addressing and not 16bit
segmented memory accesses !!!

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Daniel

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