release/src/router/tinc/src/event.h

   1 /*
   2     event.h -- I/O, timeout and signal event handling
   3     Copyright (C) 2012-2013 Guus Sliepen <guus@tinc-vpn.org>
   4
   5     This program is free software; you can redistribute it and/or modify
   6     it under the terms of the GNU General Public License as published by
   7     the Free Software Foundation; either version 2 of the License, or
   8     (at your option) any later version.
   9
  10     This program is distributed in the hope that it will be useful,
  11     but WITHOUT ANY WARRANTY; without even the implied warranty of
  12     MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  13     GNU General Public License for more details.
  14
  15     You should have received a copy of the GNU General Public License along
  16     with this program; if not, write to the Free Software Foundation, Inc.,
  17     51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
  18 */
  19
  20 #ifndef __TINC_EVENT_H__
  21 #define __TINC_EVENT_H__
  22
  23 #include "splay_tree.h"
  24
  25 #define IO_READ 1
  26 #define IO_WRITE 2
  27
  28 typedef void (*io_cb_t)(void *data, int flags);
  29 typedef void (*timeout_cb_t)(void *data);
  30 typedef void (*signal_cb_t)(void *data);
  31
  32 typedef struct io_t {
  33         int fd;
  34         int flags;
  35 #ifdef HAVE_MINGW
  36         WSAEVENT event;
  37 #endif
  38         io_cb_t cb;
  39         void *data;
  40         splay_node_t node;
  41 } io_t;
  42
  43 typedef struct timeout_t {
  44         struct timeval tv;
  45         timeout_cb_t cb;
  46         void *data;
  47         splay_node_t node;
  48 } timeout_t;
  49
  50 typedef struct signal_t {
  51         int signum;
  52         signal_cb_t cb;
  53         void *data;
  54         splay_node_t node;
  55 } signal_t;
  56
  57 extern struct timeval now;
  58
  59 extern void io_add(io_t *io, io_cb_t cb, void *data, int fd, int flags);
  60 #ifdef HAVE_MINGW
  61 extern void io_add_event(io_t *io, io_cb_t cb, void* data, WSAEVENT event);
  62 #endif
  63 extern void io_del(io_t *io);
  64 extern void io_set(io_t *io, int flags);
  65
  66 extern void timeout_add(timeout_t *timeout, timeout_cb_t cb, void *data, struct timeval *tv);
  67 extern void timeout_del(timeout_t *timeout);
  68 extern void timeout_set(timeout_t *timeout, struct timeval *tv);
  69
  70 extern void signal_add(signal_t *sig, signal_cb_t cb, void *data, int signum);
  71 extern void signal_del(signal_t *sig);
  72
  73 extern bool event_loop(void);
  74 extern void event_exit(void);
  75
  76 #endif