313a752cb5
tinc is using a separate thread to read from the TAP device on Windows. The rationale was that the notification mechanism for packets arriving on the virtual network device is based on Win32 events, and the event loop did not support listening to these events. Thanks to recent improvements, this event loop limitation has been lifted. Therefore we can get rid of the separate thread and simply add the Win32 "incoming packet" event to the event loop, just like a socket. The result is cleaner code that's easier to reason about.
76 lines
2.1 KiB
C
76 lines
2.1 KiB
C
/*
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event.h -- I/O, timeout and signal event handling
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Copyright (C) 2012-2013 Guus Sliepen <guus@tinc-vpn.org>
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This program is free software; you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation; either version 2 of the License, or
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(at your option) any later version.
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This program is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License along
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with this program; if not, write to the Free Software Foundation, Inc.,
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51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
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*/
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#ifndef __TINC_EVENT_H__
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#define __TINC_EVENT_H__
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#include "splay_tree.h"
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#define IO_READ 1
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#define IO_WRITE 2
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typedef void (*io_cb_t)(void *data, int flags);
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typedef void (*timeout_cb_t)(void *data);
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typedef void (*signal_cb_t)(void *data);
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typedef struct io_t {
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int fd;
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int flags;
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#ifdef HAVE_MINGW
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WSAEVENT event;
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#endif
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io_cb_t cb;
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void *data;
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splay_node_t node;
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} io_t;
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typedef struct timeout_t {
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struct timeval tv;
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timeout_cb_t cb;
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void *data;
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splay_node_t node;
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} timeout_t;
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typedef struct signal_t {
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int signum;
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signal_cb_t cb;
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void *data;
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splay_node_t node;
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} signal_t;
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extern struct timeval now;
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extern void io_add(io_t *io, io_cb_t cb, void *data, int fd, int flags);
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#ifdef HAVE_MINGW
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extern void io_add_event(io_t *io, io_cb_t cb, void* data, WSAEVENT event);
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#endif
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extern void io_del(io_t *io);
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extern void io_set(io_t *io, int flags);
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extern void timeout_add(timeout_t *timeout, timeout_cb_t cb, void *data, struct timeval *tv);
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extern void timeout_del(timeout_t *timeout);
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extern void timeout_set(timeout_t *timeout, struct timeval *tv);
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extern void signal_add(signal_t *sig, signal_cb_t cb, void *data, int signum);
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extern void signal_del(signal_t *sig);
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extern bool event_loop(void);
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extern void event_exit(void);
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#endif
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