lib/sigevent.h

   1 /*
   2  * Quagga Signal handling header.
   3  *
   4  * Copyright (C) 2004 Paul Jakma.
   5  *
   6  * This file is part of Quagga.
   7  *
   8  * Quagga is free software; you can redistribute it and/or modify it
   9  * under the terms of the GNU General Public License as published by the
  10  * Free Software Foundation; either version 2, or (at your option) any
  11  * later version.
  12  *
  13  * Quagga is distributed in the hope that it will be useful, but
  14  * WITHOUT ANY WARRANTY; without even the implied warranty of
  15  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  16  * General Public License for more details.
  17  *
  18  * You should have received a copy of the GNU General Public License along
  19  * with this program; see the file COPYING; if not, write to the Free Software
  20  * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
  21  */
  22
  23 #ifndef _QUAGGA_SIGNAL_H
  24 #define _QUAGGA_SIGNAL_H
  25
  26 #include <thread.h>
  27
  28 #define QUAGGA_SIGNAL_TIMER_INTERVAL 2L
  29
  30 struct quagga_signal_t {
  31         int signal;         /* signal number    */
  32         void (*handler)(void); /* handler to call  */
  33
  34         volatile sig_atomic_t caught; /* private member   */
  35 };
  36
  37 /* initialise sigevent system
  38  * takes:
  39  * - pointer to valid struct thread_master
  40  * - number of elements in passed in signals array
  41  * - array of quagga_signal_t's describing signals to handle
  42  *   and handlers to use for each signal
  43  */
  44 extern void signal_init(struct thread_master *m, int sigc,
  45                         struct quagga_signal_t *signals);
  46
  47 /* check whether there are signals to handle, process any found */
  48 extern int quagga_sigevent_process(void);
  49
  50 #endif /* _QUAGGA_SIGNAL_H */