1/*	$OpenBSD: event-internal.h,v 1.8 2014/10/15 22:34:44 bluhm Exp $	*/
2
3/*
4 * Copyright (c) 2000-2004 Niels Provos <provos@citi.umich.edu>
5 * All rights reserved.
6 *
7 * Redistribution and use in source and binary forms, with or without
8 * modification, are permitted provided that the following conditions
9 * are met:
10 * 1. Redistributions of source code must retain the above copyright
11 *    notice, this list of conditions and the following disclaimer.
12 * 2. Redistributions in binary form must reproduce the above copyright
13 *    notice, this list of conditions and the following disclaimer in the
14 *    documentation and/or other materials provided with the distribution.
15 * 3. The name of the author may not be used to endorse or promote products
16 *    derived from this software without specific prior written permission.
17 *
18 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
19 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
20 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
21 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
22 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
23 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
24 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
25 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
26 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
27 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
28 */
29#ifndef _EVENT_INTERNAL_H_
30#define _EVENT_INTERNAL_H_
31
32#ifdef __cplusplus
33extern "C" {
34#endif
35
36#include "min_heap.h"
37#include "evsignal.h"
38
39struct eventop {
40	const char *name;
41	void *(*init)(struct event_base *);
42	int (*add)(void *, struct event *);
43	int (*del)(void *, struct event *);
44	int (*dispatch)(struct event_base *, void *, struct timeval *);
45	void (*dealloc)(struct event_base *, void *);
46	/* set if we need to reinitialize the event base */
47	int need_reinit;
48};
49
50struct event_base {
51	const struct eventop *evsel;
52	void *evbase;
53	int event_count;		/* counts number of total events */
54	int event_count_active;	/* counts number of active events */
55
56	int event_gotterm;		/* Set to terminate loop */
57	int event_break;		/* Set to terminate loop immediately */
58
59	/* active event management */
60	struct event_list **activequeues;
61	int nactivequeues;
62
63	/* signal handling info */
64	struct evsignal_info sig;
65
66	struct event_list eventqueue;
67	struct timeval event_tv;
68
69	struct min_heap timeheap;
70
71	struct timeval tv_cache;
72};
73
74int _evsignal_set_handler(struct event_base *base, int evsignal,
75			  void (*fn)(int));
76int _evsignal_restore_handler(struct event_base *base, int evsignal);
77
78/* defined in evutil.c */
79const char *evutil_getenv(const char *varname);
80
81#ifdef __cplusplus
82}
83#endif
84
85#endif /* _EVENT_INTERNAL_H_ */
86