The Tor Browser: ipc/chromium/src/third_party/libevent/evsignal-internal.h@6474c204b198

Cloned upstream origin tor-browser at tor-browser-31.3.0esr-4.5-1-build1
revision ID fc1c9ff7c1b2defdbc039f12214767608f46423f for hacking purpose.

     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_

    30 #ifndef evutil_socket_t

    31 #include "event2/util.h"

    32 #endif

    33 #include <signal.h>

    35 typedef void (*ev_sighandler_t)(int);

    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;

    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 *);

    62 void evsig_set_base(struct event_base *base);

    64 #endif /* _EVSIGNAL_H_ */

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