gtk_tree_store_set stalls when using threads

[Sam <expires200310 software manicsadness com>]

Hello,

I have built a directory tree function and I'm using the
treeview_expanded signal to add subdirectories.

This works fine without threads, but when I use threads the program
stalls at random points. Since for now this is the only thread there
can't be any collisions.

I'm using GTK 2.2.1-6 and pthreads and I have initialized gdk_threads
using this:

  ...
  g_thread_init(NULL);
  gdk_threads_init();
  gtk_init(&argc, &argv);
  gdk_threads_enter();
  gtk_main();
  gdk_threads_leave();
  ...

Below is my code, I hope it doesn't loose format.
I've added a comment at the point where it stalls.

Can anyone point me to what I'm doing wrong?

Thanks!
-Sam


-------------------------
void
on_treeview_addfiles_files_directories_row_expanded
                                        (GtkTreeView     *treeview,
                                        GtkTreeIter     *iter,
                                        GtkTreePath     *path,
                                        gpointer         user_data)
{
  dirtree_expand(gtk_tree_view_get_model(treeview), path,
gui.showhidden);
}


void
dirtree_expand(GtkTreeModel *model, GtkTreePath *path, gboolean
showhidden)
{
  GtkTreeIter parent;
  GtkTreeIter child;
  GtkTreeIter trash;
  DIR *dirstream = NULL;
  struct dirent *dirstruct = NULL;
  gchar *directory = NULL;
  gchar subdirectory[4096];
  gchar *name = NULL;
  
  /* Get the directory name of the given gtk path. */
  if (!gtk_tree_model_get_iter(model, &parent, path)) {
    fprintf(stderr, "Error: dirtree_expand(): Failed receiving the tree
iter.");
    return;
  }
  gtk_tree_model_get(model, &parent, PATH_COLUMN, &directory, -1);
  
  /* Open the directory. */
  if (!(dirstream = opendir(directory))) {
    printf("Error: dirtree_expand(): Failed opening path. (%s)\n",
directory);
    return;
  }
  
  /* Look if there is only a dummy node under this parent. */
  if (!gtk_tree_model_iter_children(GTK_TREE_MODEL(model), &child,
&parent)) {
    printf("Error: dirtree_expand(): Failed fetching the child
iter.\n");
    return;
  }
  gtk_tree_model_get(GTK_TREE_MODEL(model), &child, DIR_COLUMN, &name,
-1);
  
  /* Add each child-dir to the node. */
  while ((dirstruct = readdir(dirstream)) != NULL) {
    /* Don't show the relative directory links. */
    if (strcmp(dirstruct->d_name, "..") == 0 ||
strcmp(dirstruct->d_name, ".") == 0)
      continue;
    
    /* Show hidden files? */
    if (strncmp(dirstruct->d_name, ".", 1) == 0 && !showhidden)
      continue;
    
    /* Create a fullpath. */
    snprintf(subdirectory, 4095, "%s%s", directory, dirstruct->d_name);
    
    if (!is_dir(subdirectory))
      continue;
    
    strcpy(subdirectory + strlen(subdirectory), "/");
    if (!name) {
      /* If there is only a dummy node under parent, replace it's name.
*/
// ******************* THIS WORKS FINE ******************
      gtk_tree_store_set(GTK_TREE_STORE(model), &child, DIR_COLUMN,
dirstruct->d_name, PATH_COLUMN, subdirectory, -1);
      name = (gchar *)1; // Mark the variable as used.
    }
    else {
      /* Add the new node. */
      gtk_tree_store_append(GTK_TREE_STORE(model), &child, &parent);
printf("DIR: %s\n", subdirectory);

// ******************* STALL HERE *********************
      gtk_tree_store_set(GTK_TREE_STORE(model), &child, DIR_COLUMN,
dirstruct->d_name, PATH_COLUMN, subdirectory, -1);
printf("Done\n");
    }
    
    /* If the current directory has a subdir, make the expander visible.
*/
    if (!(has_subdir(subdirectory, showhidden)))
      continue;
    
    /* Show the expander by adding a dummy node. */
    gtk_tree_store_append(GTK_TREE_STORE(model), &trash, &child);
  }
  
  gtk_tree_sortable_set_sort_column_id(GTK_TREE_SORTABLE(model),
DIR_COLUMN, GTK_SORT_ASCENDING);
  
  closedir(dirstream);
}
-------------------------