1275970Scy/* 2275970Scy * Copyright 2000-2007 Niels Provos <provos@citi.umich.edu> 3275970Scy * Copyright 2007-2012 Niels Provos and Nick Mathewson 4275970Scy * 5275970Scy * Redistribution and use in source and binary forms, with or without 6275970Scy * modification, are permitted provided that the following conditions 7275970Scy * are met: 8275970Scy * 1. Redistributions of source code must retain the above copyright 9275970Scy * notice, this list of conditions and the following disclaimer. 10275970Scy * 2. Redistributions in binary form must reproduce the above copyright 11275970Scy * notice, this list of conditions and the following disclaimer in the 12275970Scy * documentation and/or other materials provided with the distribution. 13275970Scy * 3. The name of the author may not be used to endorse or promote products 14275970Scy * derived from this software without specific prior written permission. 15275970Scy * 16275970Scy * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR 17275970Scy * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES 18275970Scy * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. 19275970Scy * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, 20275970Scy * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT 21275970Scy * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, 22275970Scy * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 23275970Scy * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 24275970Scy * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF 25275970Scy * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 26275970Scy */ 27275970Scy#ifndef EVSIGNAL_INTERNAL_H_INCLUDED_ 28275970Scy#define EVSIGNAL_INTERNAL_H_INCLUDED_ 29275970Scy 30275970Scy#ifndef evutil_socket_t 31275970Scy#include "event2/util.h" 32275970Scy#endif 33275970Scy#include <signal.h> 34275970Scy 35275970Scytypedef void (*ev_sighandler_t)(int); 36275970Scy 37275970Scy/* Data structure for the default signal-handling implementation in signal.c 38275970Scy */ 39275970Scystruct evsig_info { 40275970Scy /* Event watching ev_signal_pair[1] */ 41275970Scy struct event ev_signal; 42275970Scy /* Socketpair used to send notifications from the signal handler */ 43275970Scy evutil_socket_t ev_signal_pair[2]; 44275970Scy /* True iff we've added the ev_signal event yet. */ 45275970Scy int ev_signal_added; 46275970Scy /* Count of the number of signals we're currently watching. */ 47275970Scy int ev_n_signals_added; 48275970Scy 49275970Scy /* Array of previous signal handler objects before Libevent started 50275970Scy * messing with them. Used to restore old signal handlers. */ 51275970Scy#ifdef EVENT__HAVE_SIGACTION 52275970Scy struct sigaction **sh_old; 53275970Scy#else 54275970Scy ev_sighandler_t **sh_old; 55275970Scy#endif 56275970Scy /* Size of sh_old. */ 57275970Scy int sh_old_max; 58275970Scy}; 59275970Scyint evsig_init_(struct event_base *); 60275970Scyvoid evsig_dealloc_(struct event_base *); 61275970Scy 62275970Scyvoid evsig_set_base_(struct event_base *base); 63275970Scyvoid evsig_free_globals_(void); 64275970Scy 65275970Scy#endif /* EVSIGNAL_INTERNAL_H_INCLUDED_ */ 66