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/cvs/libev/event.h
Revision: 1.21
Committed: Tue Mar 16 18:38:11 2010 UTC (14 years, 3 months ago) by root
Content type: text/plain
Branch: MAIN
Changes since 1.20: +5 -1 lines
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File Contents

# Content
1 /*
2 * libevent compatibility header, only core events supported
3 *
4 * Copyright (c) 2007,2008,2010 Marc Alexander Lehmann <libev@schmorp.de>
5 * All rights reserved.
6 *
7 * Redistribution and use in source and binary forms, with or without modifica-
8 * tion, are permitted provided that the following conditions are met:
9 *
10 * 1. Redistributions of source code must retain the above copyright notice,
11 * this list of conditions and the following disclaimer.
12 *
13 * 2. Redistributions in binary form must reproduce the above copyright
14 * notice, this list of conditions and the following disclaimer in the
15 * documentation and/or other materials provided with the distribution.
16 *
17 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR IMPLIED
18 * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MER-
19 * CHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO
20 * EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPE-
21 * CIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
22 * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS;
23 * OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
24 * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTH-
25 * ERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
26 * OF THE POSSIBILITY OF SUCH DAMAGE.
27 *
28 * Alternatively, the contents of this file may be used under the terms of
29 * the GNU General Public License ("GPL") version 2 or any later version,
30 * in which case the provisions of the GPL are applicable instead of
31 * the above. If you wish to allow the use of your version of this file
32 * only under the terms of the GPL and not to allow others to use your
33 * version of this file under the BSD license, indicate your decision
34 * by deleting the provisions above and replace them with the notice
35 * and other provisions required by the GPL. If you do not delete the
36 * provisions above, a recipient may use your version of this file under
37 * either the BSD or the GPL.
38 */
39
40 #ifndef EVENT_H_
41 #define EVENT_H_
42
43 #ifdef EV_H
44 # include EV_H
45 #else
46 # include "ev.h"
47 #endif
48
49 #ifndef EV_TIMEOUT
50 # define EV_TIMEOUT EV_TIMER
51 #endif
52
53 #ifdef __cplusplus
54 extern "C" {
55 #endif
56
57 /* we need sys/time.h for struct timeval only */
58 #if !defined (WIN32) || defined (__MINGW32__)
59 # include <time.h> /* mingw seems to need this, for whatever reason */
60 # include <sys/time.h>
61 #endif
62
63 struct event_base;
64
65 #define EVLIST_TIMEOUT 0x01
66 #define EVLIST_INSERTED 0x02
67 #define EVLIST_SIGNAL 0x04
68 #define EVLIST_ACTIVE 0x08
69 #define EVLIST_INTERNAL 0x10
70 #define EVLIST_INIT 0x80
71
72 struct event
73 {
74 /* libev watchers we map onto */
75 union {
76 struct ev_io io;
77 struct ev_signal sig;
78 } iosig;
79 struct ev_timer to;
80
81 /* compatibility slots */
82 struct event_base *ev_base;
83 void (*ev_callback)(int, short, void *arg);
84 void *ev_arg;
85 int ev_fd;
86 int ev_pri;
87 int ev_res;
88 int ev_flags;
89 short ev_events;
90 };
91
92 #define EV_PERSIST 0x10
93
94 #define EVENT_SIGNAL(ev) ((int) (ev)->ev_fd)
95 #define EVENT_FD(ev) ((int) (ev)->ev_fd)
96
97 #define event_initialized(ev) ((ev)->ev_flags & EVLIST_INIT)
98
99 #define evtimer_add(ev,tv) event_add (ev, tv)
100 #define evtimer_set(ev,cb,data) event_set (ev, -1, 0, cb, data)
101 #define evtimer_del(ev) event_del (ev)
102 #define evtimer_pending(ev,tv) event_pending (ev, EV_TIMEOUT, tv)
103 #define evtimer_initialized(ev) event_initialized (ev)
104
105 #define timeout_add(ev,tv) evtimer_add (ev, tv)
106 #define timeout_set(ev,cb,data) evtimer_set (ev, cb, data)
107 #define timeout_del(ev) evtimer_del (ev)
108 #define timeout_pending(ev,tv) evtimer_pending (ev, tv)
109 #define timeout_initialized(ev) evtimer_initialized (ev)
110
111 #define signal_add(ev,tv) event_add (ev, tv)
112 #define signal_set(ev,sig,cb,data) event_set (ev, sig, EV_SIGNAL | EV_PERSIST, cb, data)
113 #define signal_del(ev) event_del (ev)
114 #define signal_pending(ev,tv) event_pending (ev, EV_SIGNAL, tv)
115 #define signal_initialized(ev) event_initialized (ev)
116
117 const char *event_get_version (void);
118 const char *event_get_method (void);
119
120 void *event_init (void);
121 void event_base_free (struct event_base *base);
122
123 #define EVLOOP_ONCE EVLOOP_ONESHOT
124 int event_loop (int);
125 int event_loopexit (struct timeval *tv);
126 int event_dispatch (void);
127
128 #define _EVENT_LOG_DEBUG 0
129 #define _EVENT_LOG_MSG 1
130 #define _EVENT_LOG_WARN 2
131 #define _EVENT_LOG_ERR 3
132 typedef void (*event_log_cb)(int severity, const char *msg);
133 void event_set_log_callback(event_log_cb cb);
134
135 void event_set (struct event *ev, int fd, short events, void (*cb)(int, short, void *), void *arg);
136 int event_once (int fd, short events, void (*cb)(int, short, void *), void *arg, struct timeval *tv);
137
138 int event_add (struct event *ev, struct timeval *tv);
139 int event_del (struct event *ev);
140 void event_active (struct event *ev, int res, short ncalls); /* ncalls is being ignored */
141
142 int event_pending (struct event *ev, short, struct timeval *tv);
143
144 int event_priority_init (int npri);
145 int event_priority_set (struct event *ev, int pri);
146
147 int event_base_set (struct event_base *base, struct event *ev);
148 int event_base_loop (struct event_base *base, int);
149 int event_base_loopexit (struct event_base *base, struct timeval *tv);
150 int event_base_dispatch (struct event_base *base);
151 int event_base_once (struct event_base *base, int fd, short events, void (*cb)(int, short, void *), void *arg, struct timeval *tv);
152 int event_base_priority_init (struct event_base *base, int fd);
153
154 /* next line is different in the libevent+libev version */
155 /*libevent-include*/
156
157 #ifdef __cplusplus
158 }
159 #endif
160
161 #endif
162