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libevent

    1: /*
    2:  * Copyright 2000-2002 Niels Provos <provos@citi.umich.edu>
    3:  * All rights reserved.
    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: typedef void (*ev_sighandler_t)(int);
   31: 
   32: struct evsignal_info {
   33: 	struct event ev_signal;
   34: 	int ev_signal_pair[2];
   35: 	int ev_signal_added;
   36: 	volatile sig_atomic_t evsignal_caught;
   37: 	struct event_list evsigevents[NSIG];
   38: 	sig_atomic_t evsigcaught[NSIG];
   39: #ifdef HAVE_SIGACTION
   40: 	struct sigaction **sh_old;
   41: #else
   42: 	ev_sighandler_t **sh_old;
   43: #endif
   44: 	int sh_old_max;
   45: };
   46: int evsignal_init(struct event_base *);
   47: void evsignal_process(struct event_base *);
   48: int evsignal_add(struct event *);
   49: int evsignal_del(struct event *);
   50: void evsignal_dealloc(struct event_base *);
   51: 
   52: #endif /* _EVSIGNAL_H_ */