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/*
* event.h
*/
/*-
* Copyright (c) 2009 Maksim Yevmenkin <m_evmenkin@yahoo.com>
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. 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 AUTHOR 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 AUTHOR 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.
*/
/* $FreeBSD$ */
/*
* Hack to provide libevent (see devel/libevent port) like API.
* Should be removed if FreeBSD ever decides to import libevent into base.
*/
#ifndef _EVENT_H_
#define _EVENT_H_ 1
#define EV_READ 0x02
#define EV_WRITE 0x04
#define EV_PERSIST 0x10 /* Persistent event */
#define EV_PENDING (1 << 13) /* internal use only! */
#define EV_HAS_TIMEOUT (1 << 14) /* internal use only! */
#define EV_CURRENT (1 << 15) /* internal use only! */
struct event
{
int fd;
short flags;
void (*cb)(int, short, void *);
void *cbarg;
struct timeval timeout;
struct timeval expire;
#ifdef EVENT_DEBUG
char const *files[3];
int lines[3];
#endif
TAILQ_ENTRY(event) next;
};
void event_init (void);
int event_dispatch (void);
void __event_set (struct event *, int, short,
void (*)(int, short, void *), void *);
int __event_add (struct event *, struct timeval const *);
int __event_del (struct event *);
#ifdef EVENT_DEBUG
#define event_log_err(fmt, args...) syslog(LOG_ERR, fmt, ##args)
#define event_log_info(fmt, args...) syslog(LOG_INFO, fmt, ##args)
#define event_log_notice(fmt, args...) syslog(LOG_NOTICE, fmt, ##args)
#define event_log_debug(fmt, args...) syslog(LOG_DEBUG, fmt, ##args)
#define event_set(ev, fd, flags, cb, cbarg) \
_event_set(__FILE__, __LINE__, ev, fd, flags, cb, cbarg)
#define event_add(ev, timeout) \
_event_add(__FILE__, __LINE__, ev, timeout)
#define event_del(ev) \
_event_del(__FILE__, __LINE__, ev)
#define evtimer_set(ev, cb, cbarg) \
_event_set(__FILE__, __LINE__, ev, -1, 0, cb, cbarg)
#define evtimer_add(ev, timeout) \
_event_add(__FILE__, __LINE__, ev, timeout)
static inline void
_event_set(char const *file, int line, struct event *ev, int fd, short flags,
void (*cb)(int, short, void *), void *cbarg)
{
event_log_debug("set %s:%d ev=%p, fd=%d, flags=%#x, cb=%p, cbarg=%p",
file, line, ev, fd, flags, cb, cbarg);
ev->files[0] = file;
ev->lines[0] = line;
__event_set(ev, fd, flags, cb, cbarg);
}
static inline int
_event_add(char const *file, int line, struct event *ev,
struct timeval const *timeout) {
event_log_debug("add %s:%d ev=%p, fd=%d, flags=%#x, cb=%p, cbarg=%p, " \
"timeout=%p", file, line, ev, ev->fd, ev->flags, ev->cb,
ev->cbarg, timeout);
ev->files[1] = file;
ev->lines[1] = line;
return (__event_add(ev, timeout));
}
static inline int
_event_del(char const *file, int line, struct event *ev)
{
event_log_debug("del %s:%d ev=%p, fd=%d, flags=%#x, cb=%p, cbarg=%p",
file, line, ev, ev->fd, ev->flags, ev->cb, ev->cbarg);
ev->files[2] = file;
ev->lines[2] = line;
return (__event_del(ev));
}
#else
#define event_log_err(fmt, args...)
#define event_log_info(fmt, args...)
#define event_log_notice(fmt, args...)
#define event_log_debug(fmt, args...)
#define event_set(ev, fd, flags, cb, cbarg) \
__event_set(ev, fd, flags, cb, cbarg)
#define event_add(ev, timeout) \
__event_add(ev, timeout)
#define event_del(ev) \
__event_del(ev)
#define evtimer_set(ev, cb, cbarg) \
__event_set(ev, -1, 0, cb, cbarg)
#define evtimer_add(ev, timeout) \
__event_add(ev, timeout)
#endif /* EVENT_DEBUG */
#endif /* ndef _EVENT_H_ */
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