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/*
* Copyright 2000-2007 Niels Provos <provos@citi.umich.edu>
* Copyright 2007-2010 Niels Provos and Nick Mathewson
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
* 3. The name of the author may not be used to endorse or promote products
* derived from this software without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
* IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
* OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
* IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
* NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
* THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/
#ifndef _EVSIGNAL_H_
#define _EVSIGNAL_H_
#ifndef evutil_socket_t
#include "event2/util.h"
#endif
#include <signal.h>
typedef void (*ev_sighandler_t)(int);
/* Data structure for the default signal-handling implementation in signal.c
*/
struct evsig_info {
/* Event watching ev_signal_pair[1] */
struct event ev_signal;
/* Socketpair used to send notifications from the signal handler */
evutil_socket_t ev_signal_pair[2];
/* True iff we've added the ev_signal event yet. */
int ev_signal_added;
/* Count of the number of signals we're currently watching. */
int ev_n_signals_added;
/* Array of previous signal handler objects before Libevent started
* messing with them. Used to restore old signal handlers. */
#ifdef _EVENT_HAVE_SIGACTION
struct sigaction **sh_old;
#else
ev_sighandler_t **sh_old;
#endif
/* Size of sh_old. */
int sh_old_max;
};
int evsig_init(struct event_base *);
void evsig_dealloc(struct event_base *);
void evsig_set_base(struct event_base *base);
#endif /* _EVSIGNAL_H_ */
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