/*-
 * Copyright (c) 2006 Verdens Gang AS
 * Copyright (c) 2006-2008 Linpro AS
 * All rights reserved.
 *
 * Author: Poul-Henning Kamp <phk@phk.freebsd.dk>
 *
 * 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 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.
 *
 * $Id: vev.h 3580 2009-02-05 08:45:25Z tfheen $
 */

#include <poll.h>

#include "vqueue.h"

struct vev;
struct vev_base;

typedef int vev_cb_f(const struct vev *, int what);

struct vev {
	unsigned		magic;
#define VEV_MAGIC		0x46bbd419

	/* pub */
	const char		*name;
	int			fd;
	unsigned		fd_flags;
#define		EV_RD		POLLIN
#define		EV_WR		POLLOUT
#define		EV_ERR		POLLERR
#define		EV_HUP		POLLHUP
#define		EV_GONE		POLLNVAL
#define		EV_SIG		-1
	int			sig;
	unsigned		sig_flags;
	double			timeout;
	vev_cb_f		*callback;
	void			*priv;

	/* priv */
	double			__when;
	VTAILQ_ENTRY(vev)	__list;
	unsigned		__binheap_idx;
	unsigned		__privflags;
	struct vev_base		*__vevb;
	int			__poll_idx;
};

struct vev_base *vev_new_base(void);
void vev_destroy_base(struct vev_base *evb);

struct vev *vev_new(void);

int vev_add(struct vev_base *evb, struct vev *e);
void vev_del(struct vev_base *evb, struct vev *e);

int vev_schedule_one(struct vev_base *evb);
int vev_schedule(struct vev_base *evb);
