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kc3-lang/libevent/evsignal.h

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  • Author : Niels Provos
    Date : 2007-03-10 06:37:53
    Hash : 41b7cbc3
    Message : more the signal base into the event base; this removes global state and makes signals work better with threading; from Wouter Wijngaards small fixes for kqueue and style by me svn:r351

  • evsignal.h
  • /*
     * Copyright 2000-2002 Niels Provos <provos@citi.umich.edu>
     * All rights reserved.
     *
     * Redistribution and use in source and binary forms, with or without
     * modification, are permitted provided that the following conditions
     * are met:
     * 1. Redistributions of source code must retain the above copyright
     *    notice, this list of conditions and the following disclaimer.
     * 2. Redistributions in binary form must reproduce the above copyright
     *    notice, this list of conditions and the following disclaimer in the
     *    documentation and/or other materials provided with the distribution.
     * 3. The name of the author may not be used to endorse or promote products
     *    derived from this software without specific prior written permission.
     *
     * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
     * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
     * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
     * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
     * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
     * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
     * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
     * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
     * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
     * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
     */
    #ifndef _EVSIGNAL_H_
    #define _EVSIGNAL_H_
    
    struct evsignal_info {
    	struct event_list signalqueue;
    	struct event ev_signal;
    	int ev_signal_pair[2];
    	int ev_signal_added;
    	volatile sig_atomic_t evsignal_caught;
    	sig_atomic_t evsigcaught[NSIG];
    };
    void evsignal_init(struct event_base *);
    void evsignal_process(struct event_base *);
    int evsignal_add(struct event *);
    int evsignal_del(struct event *);
    void evsignal_dealloc(struct event_base *);
    
    #endif /* _EVSIGNAL_H_ */