kc3-lang/libevent/evsignal.h

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• Hash : 499d0039
  Author :
  Date : 2009-05-22T15:09:43
  

  Try to contain the failure when we are running without socketpair().
  
  Some win32 systems (mostly those using Kaspersky, it would seem)
  prevent us from faking socketpair().  This makes our signal
  notification code just not work.  Our response since 1.4 has been to
  assert.  For users who would rather work without signals than not work
  at all, this has been a regression from 1.3e.
  
  This patch makes adding signal events fail in this case; there's no
  reason to kill the whole process.
  
  svn:r1304
  

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• 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_
  
  typedef void (*ev_sighandler_t)(int);
  
  struct evsignal_info {
  	struct event ev_signal;
  	int ev_signal_pair[2];
  	int ev_signal_added;
  	volatile sig_atomic_t evsignal_caught;
  	struct event_list evsigevents[NSIG];
  	sig_atomic_t evsigcaught[NSIG];
  #ifdef HAVE_SIGACTION
  	struct sigaction **sh_old;
  #else
  	ev_sighandler_t **sh_old;
  #endif
  	int sh_old_max;
  };
  int 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_ */
  

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