1*c43e99fdSEd Maste /* 2*c43e99fdSEd Maste * Copyright 2000-2007 Niels Provos <provos@citi.umich.edu> 3*c43e99fdSEd Maste * Copyright 2007-2012 Niels Provos and Nick Mathewson 4*c43e99fdSEd Maste * 5*c43e99fdSEd Maste * Redistribution and use in source and binary forms, with or without 6*c43e99fdSEd Maste * modification, are permitted provided that the following conditions 7*c43e99fdSEd Maste * are met: 8*c43e99fdSEd Maste * 1. Redistributions of source code must retain the above copyright 9*c43e99fdSEd Maste * notice, this list of conditions and the following disclaimer. 10*c43e99fdSEd Maste * 2. Redistributions in binary form must reproduce the above copyright 11*c43e99fdSEd Maste * notice, this list of conditions and the following disclaimer in the 12*c43e99fdSEd Maste * documentation and/or other materials provided with the distribution. 13*c43e99fdSEd Maste * 3. The name of the author may not be used to endorse or promote products 14*c43e99fdSEd Maste * derived from this software without specific prior written permission. 15*c43e99fdSEd Maste * 16*c43e99fdSEd Maste * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR 17*c43e99fdSEd Maste * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES 18*c43e99fdSEd Maste * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. 19*c43e99fdSEd Maste * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, 20*c43e99fdSEd Maste * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT 21*c43e99fdSEd Maste * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, 22*c43e99fdSEd Maste * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 23*c43e99fdSEd Maste * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 24*c43e99fdSEd Maste * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF 25*c43e99fdSEd Maste * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 26*c43e99fdSEd Maste */ 27*c43e99fdSEd Maste #ifndef EVSIGNAL_INTERNAL_H_INCLUDED_ 28*c43e99fdSEd Maste #define EVSIGNAL_INTERNAL_H_INCLUDED_ 29*c43e99fdSEd Maste 30*c43e99fdSEd Maste #ifndef evutil_socket_t 31*c43e99fdSEd Maste #include "event2/util.h" 32*c43e99fdSEd Maste #endif 33*c43e99fdSEd Maste #include <signal.h> 34*c43e99fdSEd Maste 35*c43e99fdSEd Maste typedef void (*ev_sighandler_t)(int); 36*c43e99fdSEd Maste 37*c43e99fdSEd Maste /* Data structure for the default signal-handling implementation in signal.c 38*c43e99fdSEd Maste */ 39*c43e99fdSEd Maste struct evsig_info { 40*c43e99fdSEd Maste /* Event watching ev_signal_pair[1] */ 41*c43e99fdSEd Maste struct event ev_signal; 42*c43e99fdSEd Maste /* Socketpair used to send notifications from the signal handler */ 43*c43e99fdSEd Maste evutil_socket_t ev_signal_pair[2]; 44*c43e99fdSEd Maste /* True iff we've added the ev_signal event yet. */ 45*c43e99fdSEd Maste int ev_signal_added; 46*c43e99fdSEd Maste /* Count of the number of signals we're currently watching. */ 47*c43e99fdSEd Maste int ev_n_signals_added; 48*c43e99fdSEd Maste 49*c43e99fdSEd Maste /* Array of previous signal handler objects before Libevent started 50*c43e99fdSEd Maste * messing with them. Used to restore old signal handlers. */ 51*c43e99fdSEd Maste #ifdef EVENT__HAVE_SIGACTION 52*c43e99fdSEd Maste struct sigaction **sh_old; 53*c43e99fdSEd Maste #else 54*c43e99fdSEd Maste ev_sighandler_t **sh_old; 55*c43e99fdSEd Maste #endif 56*c43e99fdSEd Maste /* Size of sh_old. */ 57*c43e99fdSEd Maste int sh_old_max; 58*c43e99fdSEd Maste }; 59*c43e99fdSEd Maste int evsig_init_(struct event_base *); 60*c43e99fdSEd Maste void evsig_dealloc_(struct event_base *); 61*c43e99fdSEd Maste 62*c43e99fdSEd Maste void evsig_set_base_(struct event_base *base); 63*c43e99fdSEd Maste void evsig_free_globals_(void); 64*c43e99fdSEd Maste 65*c43e99fdSEd Maste #endif /* EVSIGNAL_INTERNAL_H_INCLUDED_ */ 66