/**
* Used to replace as atomically as possible known value to new one
*/
public function set_if_maybe_equals($key, $old_value, $new_value)
{
$storage_key = $this->get_item_key($key);
$cas = null;
$value = @$this->_memcache->get($storage_key, null, $cas);
if (!is_array($value)) {
return false;
}
if (isset($old_value['content']) && $value['content'] != $old_value['content']) {
return false;
}
return @$this->_memcache->cas($cas, $storage_key, $new_value);
}
