Add a new item to the logs list.

        If 'event' is a 'new one', add it at the beginning of the list.
        If 'event' is not a 'new one', update the list .
        If event < peak_time then the alert is not set.

def add(self, event_state, event_type, event_value,
            proc_list=None, proc_desc="", peak_time=6):
        """Add a new item to the logs list.

        If 'event' is a 'new one', add it at the beginning of the list.
        If 'event' is not a 'new one', update the list .
        If event < peak_time then the alert is not set.
        """
        proc_list = proc_list or glances_processes.getlist()

        # Add or update the log
        event_index = self.__event_exist(event_type)
        if event_index < 0:
            # Event did not exist, add it
            self._create_event(event_state, event_type, event_value,
                               proc_list, proc_desc, peak_time)
        else:
            # Event exist, update it
            self._update_event(event_index, event_state, event_type, event_value,
                               proc_list, proc_desc, peak_time)

        return self.len()