1/*
2 * Copyright 2000-2002 Niels Provos <provos@citi.umich.edu>
3 * All rights reserved.
4 *
5 * Redistribution and use in source and binary forms, with or without
6 * modification, are permitted provided that the following conditions
7 * are met:
8 * 1. Redistributions of source code must retain the above copyright
9 *    notice, this list of conditions and the following disclaimer.
10 * 2. Redistributions in binary form must reproduce the above copyright
11 *    notice, this list of conditions and the following disclaimer in the
12 *    documentation and/or other materials provided with the distribution.
13 * 3. The name of the author may not be used to endorse or promote products
14 *    derived from this software without specific prior written permission.
15 *
16 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
17 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
18 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
19 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
20 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
21 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
22 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
23 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
24 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
25 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
26 */
27#ifndef _EVSIGNAL_H_
28#define _EVSIGNAL_H_
29
30typedef void (*ev_sighandler_t)(int);
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#ifdef HAVE_SIGACTION
40	struct sigaction **sh_old;
41#else
42	ev_sighandler_t **sh_old;
43#endif
44	int sh_old_max;
45};
46int evsignal_init(struct event_base *);
47void evsignal_process(struct event_base *);
48int evsignal_add(struct event *);
49int evsignal_del(struct event *);
50void evsignal_dealloc(struct event_base *);
51
52#endif /* _EVSIGNAL_H_ */
53