/*

 * Copyright (c) 2009 Eric Faurot <eric@openbsd.org>

 *

 * Permission to use, copy, modify, and distribute this software for any

 * purpose with or without fee is hereby granted, provided that the above

 * copyright notice and this permission notice appear in all copies.

 *

 * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES

 * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF

 * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR

 * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES

 * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN

 * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF

 * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.

 */

#ifndef __IMSGEV_H__

#define __IMSGEV_H__

#include <event.h>

#include <imsg.h>

#define IMSG_LEN(m)	((m)->hdr.len - IMSG_HEADER_SIZE)

struct imsgev {

	struct imsgbuf	 ibuf;

	void		(*handler)(int, short, void *);

	struct event	 ev;

	void		*data;

	short		 events;

	int		 terminate;

	void		(*callback)(struct imsgev *, int, struct imsg *);

	void		(*needfd)(struct imsgev *);

};

#define IMSGEV_IMSG	0

#define IMSGEV_DONE	1

#define IMSGEV_EREAD	2

#define IMSGEV_EWRITE	3

#define IMSGEV_EIMSG	4

void imsgev_init(struct imsgev *, int, void *, void (*)(struct imsgev *,

    int, struct imsg *), void (*)(struct imsgev *));

int  imsgev_compose(struct imsgev *, u_int16_t, u_int32_t, u_int32_t, int,

    void *, u_int16_t);

void imsgev_close(struct imsgev *);

void imsgev_clear(struct imsgev *);

#endif /* __IMSGEV_H__ */