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event.h
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event.h
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/*
* libevent compatibility header, only core events supported
*
* Copyright (c) 2007,2008,2010,2012 Marc Alexander Lehmann <libev@schmorp.de>
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without modifica-
* tion, 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 ``AS IS'' AND ANY EXPRESS OR IMPLIED
* WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MER-
* CHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO
* EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPE-
* CIAL, 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 OTH-
* ERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
* OF THE POSSIBILITY OF SUCH DAMAGE.
*
* Alternatively, the contents of this file may be used under the terms of
* the GNU General Public License ("GPL") version 2 or any later version,
* in which case the provisions of the GPL are applicable instead of
* the above. If you wish to allow the use of your version of this file
* only under the terms of the GPL and not to allow others to use your
* version of this file under the BSD license, indicate your decision
* by deleting the provisions above and replace them with the notice
* and other provisions required by the GPL. If you do not delete the
* provisions above, a recipient may use your version of this file under
* either the BSD or the GPL.
*/
#ifndef EVENT_H_
#define EVENT_H_
#ifdef EV_H
# include EV_H
#else
# include "ev.h"
#endif
#ifndef EVLOOP_NONBLOCK
# define EVLOOP_NONBLOCK EVRUN_NOWAIT
#endif
#ifndef EVLOOP_ONESHOT
# define EVLOOP_ONESHOT EVRUN_ONCE
#endif
#ifndef EV_TIMEOUT
# define EV_TIMEOUT EV_TIMER
#endif
#ifdef __cplusplus
extern "C" {
#endif
/* we need sys/time.h for struct timeval only */
#if !defined (WIN32) || defined (__MINGW32__)
# include <time.h> /* mingw seems to need this, for whatever reason */
# include <sys/time.h>
#endif
struct event_base;
#define EVLIST_TIMEOUT 0x01
#define EVLIST_INSERTED 0x02
#define EVLIST_SIGNAL 0x04
#define EVLIST_ACTIVE 0x08
#define EVLIST_INTERNAL 0x10
#define EVLIST_INIT 0x80
typedef void (*event_callback_fn)(int, short, void *);
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;
event_callback_fn ev_callback;
void *ev_arg;
int ev_fd;
int ev_pri;
int ev_res;
int ev_flags;
short ev_events;
};
event_callback_fn event_get_callback (const struct event *ev);
#define EV_READ EV_READ
#define EV_WRITE EV_WRITE
#define EV_PERSIST 0x10
#define EV_ET 0x20 /* nop */
#define EVENT_SIGNAL(ev) ((int) (ev)->ev_fd)
#define EVENT_FD(ev) ((int) (ev)->ev_fd)
#define event_initialized(ev) ((ev)->ev_flags & EVLIST_INIT)
#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);
struct event_base *event_base_new (void);
const char *event_base_get_method (const struct event_base *);
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);
/* next line is different in the libevent+libev version */
/*libevent-include*/
#ifdef __cplusplus
}
#endif
#endif