evsignal.h 2.1 KB

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  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. typedef void (*ev_sighandler_t)(int);
  30. struct evsignal_info {
  31. struct event ev_signal;
  32. int ev_signal_pair[2];
  33. int ev_signal_added;
  34. volatile sig_atomic_t evsignal_caught;
  35. struct event_list evsigevents[NSIG];
  36. sig_atomic_t evsigcaught[NSIG];
  37. #ifdef HAVE_SIGACTION
  38. struct sigaction **sh_old;
  39. #else
  40. ev_sighandler_t **sh_old;
  41. #endif
  42. int sh_old_max;
  43. };
  44. int evsignal_init(struct event_base *);
  45. void evsignal_process(struct event_base *);
  46. int evsignal_add(struct event *);
  47. int evsignal_del(struct event *);
  48. void evsignal_dealloc(struct event_base *);
  49. #endif /* _EVSIGNAL_H_ */