evsignal.h revision 1.5 
1/*	$OpenBSD: evsignal.h,v 1.5 2014/10/06 21:16:03 bluhm Exp $	*/
2
3/*
4 * Copyright 2000-2002 Niels Provos <provos@citi.umich.edu>
5 * All rights reserved.
6 *
7 * Redistribution and use in source and binary forms, with or without
8 * modification, are permitted provided that the following conditions
9 * are met:
10 * 1. Redistributions of source code must retain the above copyright
11 *    notice, this list of conditions and the following disclaimer.
12 * 2. Redistributions in binary form must reproduce the above copyright
13 *    notice, this list of conditions and the following disclaimer in the
14 *    documentation and/or other materials provided with the distribution.
15 * 3. The name of the author may not be used to endorse or promote products
16 *    derived from this software without specific prior written permission.
17 *
18 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
19 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
20 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
21 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
22 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
23 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
24 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
25 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
26 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
27 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
28 */
29#ifndef _EVSIGNAL_H_
30#define _EVSIGNAL_H_
31
32struct evsignal_info {
33	struct event ev_signal;
34	int ev_signal_pair[2];
35	int ev_signal_added;
36	volatile sig_atomic_t evsignal_caught;
37	struct event_list evsigevents[NSIG];
38	sig_atomic_t evsigcaught[NSIG];
39	struct sigaction **sh_old;
40	int sh_old_max;
41};
42int evsignal_init(struct event_base *);
43void evsignal_process(struct event_base *);
44int evsignal_add(struct event *);
45int evsignal_del(struct event *);
46void evsignal_dealloc(struct event_base *);
47
48#endif /* _EVSIGNAL_H_ */
49