| /* Generic signalling/notification infrastructure */ |
| /* (C) 2009 by Holger Hans Peter Freyther <zecke@selfish.org> |
| * All Rights Reserved |
| * |
| * This program is free software; you can redistribute it and/or modify |
| * it under the terms of the GNU General Public License as published by |
| * the Free Software Foundation; either version 2 of the License, or |
| * (at your option) any later version. |
| * |
| * This program is distributed in the hope that it will be useful, |
| * but WITHOUT ANY WARRANTY; without even the implied warranty of |
| * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
| * GNU General Public License for more details. |
| * |
| * You should have received a copy of the GNU General Public License along |
| * with this program; if not, write to the Free Software Foundation, Inc., |
| * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA. |
| * |
| */ |
| |
| #include <openbsc/signal.h> |
| #include <malloc.h> |
| #include <string.h> |
| |
| |
| static LLIST_HEAD(signal_handler_list); |
| |
| struct signal_handler { |
| struct llist_head entry; |
| int areas; |
| |
| int (*sig_handler)(struct signal_data *, void*); |
| void *data; |
| }; |
| |
| |
| void register_signal_handler(int areas, |
| int (*handler)(struct signal_data *, void *), void *data) |
| { |
| struct signal_handler *sig_data = |
| (struct signal_handler *)malloc(sizeof(*sig_data)); |
| memset(sig_data, 0, sizeof(*sig_data)); |
| |
| |
| sig_data->areas = areas; |
| sig_data->data = data; |
| sig_data->sig_handler = handler; |
| llist_add_tail(&signal_handler_list, &sig_data->entry); |
| } |
| |
| void remove_signal_handler(int (*sig_handler)(struct signal_data *, void *), void *data) |
| { |
| struct signal_handler *handler; |
| |
| llist_for_each_entry(handler, &signal_handler_list, entry) { |
| if (handler->sig_handler == sig_handler && handler->data == data) { |
| llist_del(&handler->entry); |
| free(handler); |
| break; |
| } |
| } |
| } |
| |
| |
| void dispatch_signal(int area, struct signal_data *data) |
| { |
| struct signal_handler *handler; |
| |
| llist_for_each_entry(handler, &signal_handler_list, entry) { |
| if (handler->areas & area) { |
| (*handler->sig_handler)(data, handler->data); |
| } |
| } |
| } |