| Austin Schuh | a273376 | 2015-09-06 17:46:50 -0700 | [diff] [blame^] | 1 | /* |
| 2 | * Copyright 2000-2007 Niels Provos <provos@citi.umich.edu> |
| 3 | * Copyright 2007-2012 Niels Provos and Nick Mathewson |
| 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 | |
| 30 | #ifndef evutil_socket_t |
| 31 | #include "event2/util.h" |
| 32 | #endif |
| 33 | #include <signal.h> |
| 34 | |
| 35 | typedef void (*ev_sighandler_t)(int); |
| 36 | |
| 37 | /* Data structure for the default signal-handling implementation in signal.c |
| 38 | */ |
| 39 | struct evsig_info { |
| 40 | /* Event watching ev_signal_pair[1] */ |
| 41 | struct event ev_signal; |
| 42 | /* Socketpair used to send notifications from the signal handler */ |
| 43 | evutil_socket_t ev_signal_pair[2]; |
| 44 | /* True iff we've added the ev_signal event yet. */ |
| 45 | int ev_signal_added; |
| 46 | /* Count of the number of signals we're currently watching. */ |
| 47 | int ev_n_signals_added; |
| 48 | |
| 49 | /* Array of previous signal handler objects before Libevent started |
| 50 | * messing with them. Used to restore old signal handlers. */ |
| 51 | #ifdef _EVENT_HAVE_SIGACTION |
| 52 | struct sigaction **sh_old; |
| 53 | #else |
| 54 | ev_sighandler_t **sh_old; |
| 55 | #endif |
| 56 | /* Size of sh_old. */ |
| 57 | int sh_old_max; |
| 58 | }; |
| 59 | int evsig_init(struct event_base *); |
| 60 | void evsig_dealloc(struct event_base *); |
| 61 | |
| 62 | void evsig_set_base(struct event_base *base); |
| 63 | |
| 64 | #endif /* _EVSIGNAL_H_ */ |