2 * Copyright (c) 2000-2007 Niels Provos <provos@citi.umich.edu>
3 * Copyright (c) 2007-2012 Niels Provos and Nick Mathewson
5 * Redistribution and use in source and binary forms, with or without
6 * modification, are permitted provided that the following conditions
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.
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.
27 #ifndef EVENT2_EVENT_STRUCT_H_INCLUDED_
28 #define EVENT2_EVENT_STRUCT_H_INCLUDED_
30 /** @file event2/event_struct.h
32 Structures used by event.h. Using these structures directly WILL harm
33 forward compatibility: be careful.
35 No field declared in this file should be used directly in user code. Except
36 for historical reasons, these fields would not be exposed at all.
43 #include <event2/event-config.h>
44 #ifdef EVENT__HAVE_SYS_TYPES_H
45 #include <sys/types.h>
47 #ifdef EVENT__HAVE_SYS_TIME_H
52 #include <event2/util.h>
55 #include <event2/keyvalq_struct.h>
57 #define EVLIST_TIMEOUT 0x01
58 #define EVLIST_INSERTED 0x02
59 #define EVLIST_SIGNAL 0x04
60 #define EVLIST_ACTIVE 0x08
61 #define EVLIST_INTERNAL 0x10
62 #define EVLIST_ACTIVE_LATER 0x20
63 #define EVLIST_FINALIZING 0x40
64 #define EVLIST_INIT 0x80
66 #define EVLIST_ALL 0xff
68 /* Fix so that people don't have to run with <sys/queue.h> */
70 #define EVENT_DEFINED_TQENTRY_
71 #define TAILQ_ENTRY(type) \
73 struct type *tqe_next; /* next element */ \
74 struct type **tqe_prev; /* address of previous next element */ \
76 #endif /* !TAILQ_ENTRY */
79 #define EVENT_DEFINED_TQHEAD_
80 #define TAILQ_HEAD(name, type) \
82 struct type *tqh_first; \
83 struct type **tqh_last; \
87 /* Fix so that people don't have to run with <sys/queue.h> */
89 #define EVENT_DEFINED_LISTENTRY_
90 #define LIST_ENTRY(type) \
92 struct type *le_next; /* next element */ \
93 struct type **le_prev; /* address of previous next element */ \
95 #endif /* !LIST_ENTRY */
98 #define EVENT_DEFINED_LISTHEAD_
99 #define LIST_HEAD(name, type) \
101 struct type *lh_first; /* first element */ \
103 #endif /* !LIST_HEAD */
107 struct event_callback {
108 TAILQ_ENTRY(event_callback) evcb_active_next;
110 ev_uint8_t evcb_pri; /* smaller numbers are higher priority */
111 ev_uint8_t evcb_closure;
112 /* allows us to adopt for different types of events */
114 void (*evcb_callback)(evutil_socket_t, short, void *);
115 void (*evcb_selfcb)(struct event_callback *, void *);
116 void (*evcb_evfinalize)(struct event *, void *);
117 void (*evcb_cbfinalize)(struct event_callback *, void *);
124 struct event_callback ev_evcallback;
126 /* for managing timeouts */
128 TAILQ_ENTRY(event) ev_next_with_common_timeout;
131 evutil_socket_t ev_fd;
133 struct event_base *ev_base;
136 /* used for io events */
138 LIST_ENTRY (event) ev_io_next;
139 struct timeval ev_timeout;
142 /* used by signal events */
144 LIST_ENTRY (event) ev_signal_next;
146 /* Allows deletes in callback */
152 short ev_res; /* result passed to event callback */
153 struct timeval ev_timeout;
156 TAILQ_HEAD (event_list, event);
158 #ifdef EVENT_DEFINED_TQENTRY_
162 #ifdef EVENT_DEFINED_TQHEAD_
166 LIST_HEAD (event_dlist, event);
168 #ifdef EVENT_DEFINED_LISTENTRY_
172 #ifdef EVENT_DEFINED_LISTHEAD_
180 #endif /* EVENT2_EVENT_STRUCT_H_INCLUDED_ */