libev/event.h

/*
 * libevent compatibility header, only core events supported
 *
 * Copyright (c) 2007      Marc Alexander Lehmann <libev@schmorp.de>
 * All rights reserved.
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions are
 * met:
 *
 *     * Redistributions of source code must retain the above copyright
 *       notice, this list of conditions and the following disclaimer.
 *
 *     * Redistributions in binary form must reproduce the above
 *       copyright notice, this list of conditions and the following
 *       disclaimer in the documentation and/or other materials provided
 *       with the distribution.
 *
 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
 * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
 * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
 * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
 * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 */
#ifndef _EVENT_H_
#define _EVENT_H_

#ifdef EV_H
# include EV_H
#else
# include <ev.h>
#endif

#ifdef __cplusplus
extern "C" {
#endif

struct event_base;

struct event
{
  /* libev watchers we map onto */
  union {
    struct ev_io io;
    struct ev_signal sig;
  } iosig;
  struct ev_timer to;

  /* compatibility slots */
  struct event_base *ev_base;
  void (*ev_callback)(int, short, void *arg);
  void *ev_arg;
  int ev_fd;
  int ev_pri;
  int ev_res;
  short ev_events;
};

#define EV_PERSIST                 0x10

#define EVENT_SIGNAL(ev)           ((int) (ev)->ev_fd)
#define EVENT_FD(ev)               ((int) (ev)->ev_fd)

#define event_initialized(ev)      1

#define evtimer_add(ev,tv)         event_add (ev, tv)
#define evtimer_set(ev,cb,data)    event_set (ev, -1, 0, cb, data)
#define evtimer_del(ev)            event_del (ev)
#define evtimer_pending(ev,tv)     event_pending (ev, EV_TIMEOUT, tv)
#define evtimer_initialized(ev)    event_initialized (ev)

#define timeout_add(ev,tv)         evtimer_add (ev, tv)
#define timeout_set(ev,cb,data)    evtimer_set (ev, cb, data)
#define timeout_del(ev)            evtimer_del (ev)
#define timeout_pending(ev,tv)     evtimer_pending (ev, tv)
#define timeout_initialized(ev)    evtimer_initialized (ev)

#define signal_add(ev,tv)          event_add (ev, tv)
#define signal_set(ev,sig,cb,data) event_set (ev, sig, EV_SIGNAL | EV_PERSIST, cb, data)
#define signal_del(ev)             event_del (ev)
#define signal_pending(ev,tv)      event_pending (ev, EV_SIGNAL, tv)
#define signal_initialized(ev)     event_initialized (ev)

const char *event_get_version (void);
const char *event_get_method (void);

void *event_init (void);
void event_base_free (struct event_base *base);

#define EVLOOP_ONCE      EVLOOP_ONESHOT
int event_loop (int);
int event_loopexit (struct timeval *tv);
int event_dispatch (void);

#define _EVENT_LOG_DEBUG 0
#define _EVENT_LOG_MSG   1
#define _EVENT_LOG_WARN  2
#define _EVENT_LOG_ERR   3
typedef void (*event_log_cb)(int severity, const char *msg);
void event_set_log_callback(event_log_cb cb);

void event_set (struct event *ev, int fd, short events, void (*cb)(int, short, void *), void *arg);
int event_once (int fd, short events, void (*cb)(int, short, void *), void *arg, struct timeval *tv);

int event_add (struct event *ev, struct timeval *tv);
int event_del (struct event *ev);
void event_active (struct event *ev, int res, short ncalls); /* ncalls is being ignored */

int event_pending (struct event *ev, short, struct timeval *tv);

int event_priority_init (int npri);
int event_priority_set (struct event *ev, int pri);

int event_base_set (struct event_base *base, struct event *ev);
int event_base_loop (struct event_base *base, int);
int event_base_loopexit (struct event_base *base, struct timeval *tv);
int event_base_dispatch (struct event_base *base);
int event_base_once (struct event_base *base, int fd, short events, void (*cb)(int, short, void *), void *arg, struct timeval *tv);
int event_base_priority_init (struct event_base *base, int fd);

#ifndef EV_STANDALONE
# include <event_compat.h>
#endif

#ifdef __cplusplus
}
#endif

#endif

Revision:	1.14
Committed:	Fri Nov 9 17:07:59 2007 UTC (16 years, 6 months ago) by root
Content type:	text/plain
Branch:	MAIN
Changes since 1.13:	+7 -3 lines
Log Message:	move event_base predeclaration higher in the file
#	User	Rev	Content
1	root	1.1	/*
2			* libevent compatibility header, only core events supported
3			*
4			* Copyright (c) 2007 Marc Alexander Lehmann <libev@schmorp.de>
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 are
9			* met:
10			*
11			* * Redistributions of source code must retain the above copyright
12			* notice, this list of conditions and the following disclaimer.
13			*
14			* * Redistributions in binary form must reproduce the above
15			* copyright notice, this list of conditions and the following
16			* disclaimer in the documentation and/or other materials provided
17			* with the distribution.
18			*
19			* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
20			* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
21			* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
22			* A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
23			* OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
24			* SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
25			* LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
26			* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
27			* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
28			* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
29			* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
30			*/
31			#ifndef _EVENT_H_
32			#define _EVENT_H_
33
34	root	1.14	#ifdef EV_H
35			# include EV_H
36			#else
37			# include <ev.h>
38			#endif
39	root	1.6
40	root	1.1	#ifdef __cplusplus
41			extern "C" {
42			#endif
43
44	root	1.14	struct event_base;
45
46	root	1.1	struct event
47	root	1.4	{
48	root	1.5	/* libev watchers we map onto */
49	root	1.4	union {
50			struct ev_io io;
51			struct ev_signal sig;
52			} iosig;
53	root	1.1	struct ev_timer to;
54
55	root	1.4	/* compatibility slots */
56	root	1.1	struct event_base *ev_base;
57	root	1.2	void (ev_callback)(int, short, void arg);
58			void *ev_arg;
59	root	1.1	int ev_fd;
60			int ev_pri;
61			int ev_res;
62	root	1.2	short ev_events;
63	root	1.1	};
64
65			#define EV_PERSIST 0x10
66
67			#define EVENT_SIGNAL(ev) ((int) (ev)->ev_fd)
68			#define EVENT_FD(ev) ((int) (ev)->ev_fd)
69
70	root	1.10	#define event_initialized(ev) 1
71	root	1.1
72			#define evtimer_add(ev,tv) event_add (ev, tv)
73			#define evtimer_set(ev,cb,data) event_set (ev, -1, 0, cb, data)
74			#define evtimer_del(ev) event_del (ev)
75			#define evtimer_pending(ev,tv) event_pending (ev, EV_TIMEOUT, tv)
76			#define evtimer_initialized(ev) event_initialized (ev)
77
78			#define timeout_add(ev,tv) evtimer_add (ev, tv)
79			#define timeout_set(ev,cb,data) evtimer_set (ev, cb, data)
80			#define timeout_del(ev) evtimer_del (ev)
81			#define timeout_pending(ev,tv) evtimer_pending (ev, tv)
82			#define timeout_initialized(ev) evtimer_initialized (ev)
83
84			#define signal_add(ev,tv) event_add (ev, tv)
85			#define signal_set(ev,sig,cb,data) event_set (ev, sig, EV_SIGNAL \| EV_PERSIST, cb, data)
86			#define signal_del(ev) event_del (ev)
87			#define signal_pending(ev,tv) event_pending (ev, EV_SIGNAL, tv)
88			#define signal_initialized(ev) event_initialized (ev)
89
90			const char *event_get_version (void);
91			const char *event_get_method (void);
92
93			void *event_init (void);
94			void event_base_free (struct event_base *base);
95
96			#define EVLOOP_ONCE EVLOOP_ONESHOT
97			int event_loop (int);
98			int event_loopexit (struct timeval *tv);
99			int event_dispatch (void);
100
101			#define _EVENT_LOG_DEBUG 0
102			#define _EVENT_LOG_MSG 1
103			#define _EVENT_LOG_WARN 2
104			#define _EVENT_LOG_ERR 3
105			typedef void (event_log_cb)(int severity, const char msg);
106			void event_set_log_callback(event_log_cb cb);
107
108			void event_set (struct event ev, int fd, short events, void (cb)(int, short, void ), void arg);
109			int event_once (int fd, short events, void (cb)(int, short, void ), void arg, struct timeval tv);
110
111			int event_add (struct event ev, struct timeval tv);
112			int event_del (struct event *ev);
113	root	1.12	void event_active (struct event ev, int res, short ncalls); / ncalls is being ignored */
114	root	1.1
115			int event_pending (struct event ev, short, struct timeval tv);
116
117			int event_priority_init (int npri);
118			int event_priority_set (struct event *ev, int pri);
119
120			int event_base_set (struct event_base base, struct event ev);
121			int event_base_loop (struct event_base *base, int);
122			int event_base_loopexit (struct event_base base, struct timeval tv);
123			int event_base_dispatch (struct event_base *base);
124			int event_base_once (struct event_base base, int fd, short events, void (cb)(int, short, void ), void arg, struct timeval *tv);
125			int event_base_priority_init (struct event_base *base, int fd);
126
127	root	1.9	#ifndef EV_STANDALONE
128	root	1.13	# include <event_compat.h>
129	root	1.6	#endif
130
131			#ifdef __cplusplus
132			}
133			#endif
134
135	root	1.1	#endif
136	root	1.5