LCOM1920-T02G10

/*        $NetBSD: event_struct.h,v 1.1.1.2 2015/01/29 06:38:27 spz Exp $        */

/*        $NetBSD: event_struct.h,v 1.1.1.2 2015/01/29 06:38:27 spz Exp $        */

/*

 * Copyright (c) 2000-2007 Niels Provos <provos@citi.umich.edu>

 * Copyright (c) 2007-2012 Niels Provos and Nick Mathewson

 *

 * 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.

 * 3. The name of the author may not be used to endorse or promote products

 *    derived from this software without specific prior written permission.

 *

 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``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 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 _EVENT2_EVENT_STRUCT_H_

#define _EVENT2_EVENT_STRUCT_H_

/** @file event2/event_struct.h

  Structures used by event.h.  Using these structures directly WILL harm

  forward compatibility: be careful.

  No field declared in this file should be used directly in user code.  Except

  for historical reasons, these fields would not be exposed at all.

 */

#ifdef __cplusplus

extern "C" {

#endif

#include <event2/event-config.h>

#ifdef _EVENT_HAVE_SYS_TYPES_H

#include <sys/types.h>

#endif

#ifdef _EVENT_HAVE_SYS_TIME_H

#include <sys/time.h>

#endif

/* For int types. */

#include <event2/util.h>

/* For evkeyvalq */

#include <event2/keyvalq_struct.h>

#define EVLIST_TIMEOUT        0x01

#define EVLIST_INSERTED        0x02

#define EVLIST_SIGNAL        0x04

#define EVLIST_ACTIVE        0x08

#define EVLIST_INTERNAL        0x10

#define EVLIST_INIT        0x80

/* EVLIST_X_ Private space: 0x1000-0xf000 */

#define EVLIST_ALL        (0xf000 | 0x9f)

/* Fix so that people don't have to run with <sys/queue.h> */

#ifndef TAILQ_ENTRY

#define _EVENT_DEFINED_TQENTRY

#define TAILQ_ENTRY(type)                                                \

struct {                                                                \

        struct type *tqe_next;        /* next element */                        \

        struct type **tqe_prev;        /* address of previous next element */        \

}

#endif /* !TAILQ_ENTRY */

#ifndef TAILQ_HEAD

#define _EVENT_DEFINED_TQHEAD

#define TAILQ_HEAD(name, type)                        \

struct name {                                        \

        struct type *tqh_first;                        \

        struct type **tqh_last;                        \

}

#endif

struct event_base;

struct event {

        TAILQ_ENTRY(event) ev_active_next;

        TAILQ_ENTRY(event) ev_next;

        /* for managing timeouts */

        union {

                TAILQ_ENTRY(event) ev_next_with_common_timeout;

                int min_heap_idx;

        } ev_timeout_pos;

        evutil_socket_t ev_fd;

        struct event_base *ev_base;

        union {

                /* used for io events */

                struct {

                        TAILQ_ENTRY(event) ev_io_next;

                        struct timeval ev_timeout;

                } ev_io;

                /* used by signal events */

                struct {

                        TAILQ_ENTRY(event) ev_signal_next;

                        short ev_ncalls;

                        /* Allows deletes in callback */

                        short *ev_pncalls;

                } ev_signal;

        } _ev;

        short ev_events;

        short ev_res;                /* result passed to event callback */

        short ev_flags;

        ev_uint8_t ev_pri;        /* smaller numbers are higher priority */

        ev_uint8_t ev_closure;

        struct timeval ev_timeout;

        /* allows us to adopt for different types of events */

        void (*ev_callback)(evutil_socket_t, short, void *arg);

        void *ev_arg;

};

TAILQ_HEAD (event_list, event);

#ifdef _EVENT_DEFINED_TQENTRY

#undef TAILQ_ENTRY

#endif

#ifdef _EVENT_DEFINED_TQHEAD

#undef TAILQ_HEAD

#endif

#ifdef __cplusplus

}

#endif

#endif /* _EVENT2_EVENT_STRUCT_H_ */