Function _cupsStrFree

cups/string.c:283–346

 */

void
_cupsStrFree(const char *s)		/* I - String to free */
{
  _cups_sp_item_t	*item,		/* String pool item */
			*key;		/* Search key */


 /*
  * Range check input...
  */

  if (!s)
    return;

 /*
  * Check the string pool...
  *
  * We don't need to lock the mutex yet, as we only want to know if
  * the stringpool is initialized.  The rest of the code will still
  * work if it is initialized before we lock...
  */

  if (!stringpool)
    return;

 /*
  * See if the string is already in the pool...
  */

  _cupsMutexLock(&sp_mutex);

  key = (_cups_sp_item_t *)(s - offsetof(_cups_sp_item_t, str));

  if ((item = (_cups_sp_item_t *)cupsArrayFind(stringpool, key)) != NULL &&
      item == key)
  {
   /*
    * Found it, dereference...
    */

#ifdef DEBUG_GUARDS
    if (key->guard != _CUPS_STR_GUARD)
    {
      DEBUG_printf(("5_cupsStrFree: Freeing string %p(%s), guard=%08x, ref_count=%d", key, key->str, key->guard, key->ref_count));
      abort();
    }
#endif /* DEBUG_GUARDS */

    item->ref_count --;

    if (!item->ref_count)
    {
     /*
      * Remove and free...
      */

      cupsArrayRemove(stringpool, item);