Re: [gdome]reference counting

[Chaoron <chaoron ludens elte hu>]

Here is the code for the above example:

#include <gdome.h>

#define ENABLE_SEGFAULT 0

static void traverse_tree(GdomeNode *root);

static gchar *treetext = "<?xml version=\"1.0\"?>\n" \
                         "<root><child/></root>\n";

int
main(int argc, char *argv[])
{
  GdomeDOMImplementation *imp;
  GdomeDocument *doc;
  GdomeNode *root, *node;
  GdomeDOMString *domstr;
  GdomeException exc;


/* Parse tree */
    imp = gdome_di_mkref();
  doc = gdome_di_createDocFromMemory(imp, treetext, 
GDOME_LOAD_PARSING, &exc);
  gdome_di_unref(imp, &exc);

  root = (GdomeNode *) gdome_doc_documentElement(doc, &exc);

  traverse_tree(root);
    gdome_n_unref(root, &exc);
  gdome_doc_unref(doc, &exc);

  /* Create tree "by hand" */

  domstr = gdome_str_mkref("root");
  imp = gdome_di_mkref();
  doc = gdome_di_createDocument(imp, NULL, domstr, NULL, &exc);
  gdome_di_unref(imp, &exc);
  gdome_str_unref(domstr);
    root = (GdomeNode *) gdome_doc_documentElement(doc, &exc);
    domstr = gdome_str_mkref("child");
  node = (GdomeNode *) gdome_doc_createElement(doc, domstr, &exc);
  gdome_str_unref(domstr);
    gdome_n_appendChild(root, node, &exc);
  gdome_n_unref(node, &exc);
    traverse_tree(root);
    gdome_n_unref(node, &exc);
  gdome_n_unref(root, &exc);
  gdome_doc_unref(doc, &exc);

    return 0;
}

static void
traverse_tree(GdomeNode *root)
{
  GdomeNode *node;
  GdomeException exc;
      /* (Do something with the current root) */
    node = gdome_n_firstChild(root, &exc);
  while (node != NULL)
    {
      traverse_tree(node);
      #if ENABLE_SEGFAULT == 1
      gdome_n_unref(node, &exc); /* !!! Leak or segfault !!! */
#endif
      node = gdome_n_nextSibling(node, &exc);
    }
}


I hope it helps you understand the problem.

  Daniel