text: /*
   * libevent compatibility header, only core events supported
   *
   * Copyright (c) 2007,2008,2010 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
  
  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;
    void (*ev_callback)(int, short, void *arg);
    void *ev_arg;
    int ev_fd;
    int ev_pri;
    int ev_res;
    int ev_flags;
    short ev_events;
  };
  
  #define EV_PERSIST                 0x10
  
  #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);
  
  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
  
  