libev/event.c

/*
 * libevent compatibility layer
 *
 * Copyright (c) 2007 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.
 */

#include <stddef.h>
#include <stdlib.h>
#include <assert.h>

#ifndef WIN32
# include <sys/time.h>
#endif

#ifdef EV_EVENT_H
# include EV_EVENT_H
#else
# include "event.h"
#endif

#if EV_MULTIPLICITY
# define dLOOPev struct ev_loop *loop = (struct ev_loop *)ev->ev_base
# define dLOOPbase struct ev_loop *loop = (struct ev_loop *)base
#else
# define dLOOPev
# define dLOOPbase
#endif

/* never accessed, will always be cast from/to ev_loop */
struct event_base
{
  int dummy;
};

static struct event_base *x_cur;

static void
tv_set (struct timeval *tv, ev_tstamp at)
{
  tv->tv_sec  = (long)at;
  tv->tv_usec = (long)((at - (ev_tstamp)tv->tv_sec) * 1e6);
}

static ev_tstamp
tv_get (struct timeval *tv)
{
  if (tv)
    return tv->tv_sec + tv->tv_usec * 1e-6;
  else
    return -1.;
}

#define EVENT_VERSION(a,b) # a "." # b

const char *event_get_version (void)
{
  return EVENT_VERSION (EV_VERSION_MAJOR, EV_VERSION_MINOR);
}

const char *event_get_method (void)
{
  return "libev";
}

void *event_init (void)
{
#if EV_MULTIPLICITY
  if (x_cur)
    x_cur = (struct event_base *)ev_loop_new (EVFLAG_AUTO);
  else
    x_cur = (struct event_base *)ev_default_loop (EVFLAG_AUTO);
#else
  assert (("multiple event bases not supported when not compiled with EV_MULTIPLICITY", !x_cur));

  x_cur = (struct event_base *)(long)ev_default_loop (EVFLAG_AUTO);
#endif

  return x_cur;
}

void event_base_free (struct event_base *base)
{
  dLOOPbase;

#if EV_MULTIPLICITY
  if (ev_default_loop (EVFLAG_AUTO) != loop)
    ev_loop_destroy (loop);
#endif
}

int event_dispatch (void)
{
  return event_base_dispatch (x_cur);
}

#ifdef EV_STANDALONE
void event_set_log_callback (event_log_cb cb)
{
  /* nop */
}
#endif

int event_loop (int flags)
{
  return event_base_loop (x_cur, flags);
}

int event_loopexit (struct timeval *tv)
{
  return event_base_loopexit (x_cur, tv);
}

static void
x_cb (struct event *ev, int revents)
{
  revents &= EV_READ | EV_WRITE | EV_TIMEOUT | EV_SIGNAL;

  ev->ev_res = revents;
  ev->ev_callback (ev->ev_fd, (short)revents, ev->ev_arg);
}

static void
x_cb_sig (EV_P_ struct ev_signal *w, int revents)
{
  struct event *ev = (struct event *)(((char *)w) - offsetof (struct event, iosig.sig));

  if (revents & EV_ERROR)
    event_del (ev);

  x_cb (ev, revents);
}

static void
x_cb_io (EV_P_ struct ev_io *w, int revents)
{
  struct event *ev = (struct event *)(((char *)w) - offsetof (struct event, iosig.io));

  if ((revents & EV_ERROR) || !(ev->ev_events & EV_PERSIST))
    event_del (ev);

  x_cb (ev, revents);
}

static void
x_cb_to (EV_P_ struct ev_timer *w, int revents)
{
  struct event *ev = (struct event *)(((char *)w) - offsetof (struct event, to));

  event_del (ev);

  x_cb (ev, revents);
}

void event_set (struct event *ev, int fd, short events, void (*cb)(int, short, void *), void *arg)
{
  if (events & EV_SIGNAL)
    ev_init (&ev->iosig.sig, x_cb_sig);
  else
    ev_init (&ev->iosig.io, x_cb_io);

  ev_init (&ev->to, x_cb_to);

  ev->ev_base     = x_cur; /* not threadsafe, but its like libevent works */
  ev->ev_fd       = fd;
  ev->ev_events   = events;
  ev->ev_pri      = 0;
  ev->ev_callback = cb;
  ev->ev_arg      = arg;
  ev->ev_res      = 0;
  ev->ev_flags    = EVLIST_INIT;
}

int event_once (int fd, short events, void (*cb)(int, short, void *), void *arg, struct timeval *tv)
{
  return event_base_once (x_cur, fd, events, cb, arg, tv);
}

int event_add (struct event *ev, struct timeval *tv)
{
  dLOOPev;

  if (ev->ev_events & EV_SIGNAL)
    {
      if (!ev_is_active (&ev->iosig.sig))
        {
          ev_signal_set (&ev->iosig.sig, ev->ev_fd);
          ev_signal_start (EV_A_ &ev->iosig.sig);

          ev->ev_flags |= EVLIST_SIGNAL;
        }
    }
  else if (ev->ev_events & (EV_READ | EV_WRITE))
    {
      if (!ev_is_active (&ev->iosig.io))
        {
          ev_io_set (&ev->iosig.io, ev->ev_fd, ev->ev_events & (EV_READ | EV_WRITE));
          ev_io_start (EV_A_ &ev->iosig.io);

          ev->ev_flags |= EVLIST_INSERTED;
        }
    }

  if (tv)
    {
      ev->to.repeat = tv_get (tv);
      ev_timer_again (EV_A_ &ev->to);
      ev->ev_flags |= EVLIST_TIMEOUT;
    }
  else
    {
      ev_timer_stop (EV_A_ &ev->to);
      ev->ev_flags &= ~EVLIST_TIMEOUT;
    }

  ev->ev_flags |= EVLIST_ACTIVE;

  return 0;
}

int event_del (struct event *ev)
{
  dLOOPev;

  if (ev->ev_events & EV_SIGNAL)
    ev_signal_stop (EV_A_ &ev->iosig.sig);
  else if (ev->ev_events & (EV_READ | EV_WRITE))
    ev_io_stop (EV_A_ &ev->iosig.io);

  if (ev_is_active (&ev->to))
    ev_timer_stop (EV_A_ &ev->to);

  ev->ev_flags = EVLIST_INIT;

  return 0;
}

void event_active (struct event *ev, int res, short ncalls)
{
  dLOOPev;

  if (res & EV_TIMEOUT)
    ev_feed_event (EV_A_ &ev->to, res & EV_TIMEOUT);

  if (res & EV_SIGNAL)
    ev_feed_event (EV_A_ &ev->iosig.sig, res & EV_SIGNAL);

  if (res & (EV_READ | EV_WRITE))
    ev_feed_event (EV_A_ &ev->iosig.io, res & (EV_READ | EV_WRITE));
}

int event_pending (struct event *ev, short events, struct timeval *tv)
{
  short revents = 0;
  dLOOPev;

  if (ev->ev_events & EV_SIGNAL)
    {
      /* sig */
      if (ev_is_active (&ev->iosig.sig) || ev_is_pending (&ev->iosig.sig))
        revents |= EV_SIGNAL;
    }
  else if (ev->ev_events & (EV_READ | EV_WRITE))
    {
      /* io */
      if (ev_is_active (&ev->iosig.io) || ev_is_pending (&ev->iosig.io))
        revents |= ev->ev_events & (EV_READ | EV_WRITE);
    }

  if (ev->ev_events & EV_TIMEOUT || ev_is_active (&ev->to) || ev_is_pending (&ev->to))
    {
      revents |= EV_TIMEOUT;

      if (tv)
        tv_set (tv, ev_now (EV_A)); /* not sure if this is right :) */
    }

  return events & revents;
}

int event_priority_init (int npri)
{
  return event_base_priority_init (x_cur, npri);
}

int event_priority_set (struct event *ev, int pri)
{
  ev->ev_pri = pri;

  return 0;
}

int event_base_set (struct event_base *base, struct event *ev)
{
  ev->ev_base = base;

  return 0;
}

int event_base_loop (struct event_base *base, int flags)
{
  dLOOPbase;

  ev_loop (EV_A_ flags);

  return 0;
}

int event_base_dispatch (struct event_base *base)
{
  return event_base_loop (base, 0);
}

static void
x_loopexit_cb (int revents, void *base)
{
  dLOOPbase;

  ev_unloop (EV_A_ EVUNLOOP_ONE);
}

int event_base_loopexit (struct event_base *base, struct timeval *tv)
{
  ev_tstamp after = tv_get (tv);
  dLOOPbase;

  ev_once (EV_A_ -1, 0, after >= 0. ? after : 0., x_loopexit_cb, (void *)base);

  return 0;
}

struct x_once
{
  int fd;
  void (*cb)(int, short, void *);
  void *arg;
};

static void
x_once_cb (int revents, void *arg)
{
  struct x_once *once = (struct x_once *)arg;

  once->cb (once->fd, (short)revents, once->arg);
  free (once);
}

int event_base_once (struct event_base *base, int fd, short events, void (*cb)(int, short, void *), void *arg, struct timeval *tv)
{
  struct x_once *once = (struct x_once *)malloc (sizeof (struct x_once));
  dLOOPbase;

  if (!once)
    return -1;

  once->fd  = fd;
  once->cb  = cb;
  once->arg = arg;

  ev_once (EV_A_ fd, events & (EV_READ | EV_WRITE), tv_get (tv), x_once_cb, (void *)once);

  return 0;
}

int event_base_priority_init (struct event_base *base, int npri)
{
  /*dLOOPbase;*/

  return 0;
}

Revision:	1.35
Committed:	Fri May 2 07:35:47 2008 UTC (16 years ago) by root
Content type:	text/plain
Branch:	MAIN
CVS Tags:	rel-3_33, rel-3_4
Changes since 1.34:	+0 -1 lines
Log Message:	* empty log message *
#	User	Rev	Content
1	root	1.1	/*
2			* libevent compatibility layer
3			*
4			* Copyright (c) 2007 Marc Alexander Lehmann <libev@schmorp.de>
5			* All rights reserved.
6			*
7	root	1.33	* Redistribution and use in source and binary forms, with or without modifica-
8			* tion, are permitted provided that the following conditions are met:
9			*
10			* 1. Redistributions of source code must retain the above copyright notice,
11			* this list of conditions and the following disclaimer.
12			*
13			* 2. Redistributions in binary form must reproduce the above copyright
14			* notice, this list of conditions and the following disclaimer in the
15			* documentation and/or other materials provided with the distribution.
16			*
17			* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR IMPLIED
18			* WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MER-
19			* CHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO
20			* EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPE-
21			* CIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
22			* PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS;
23			* OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
24			* WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTH-
25			* ERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
26			* OF THE POSSIBILITY OF SUCH DAMAGE.
27	root	1.1	*
28	root	1.33	* Alternatively, the contents of this file may be used under the terms of
29			* the GNU General Public License ("GPL") version 2 or any later version,
30			* in which case the provisions of the GPL are applicable instead of
31			* the above. If you wish to allow the use of your version of this file
32			* only under the terms of the GPL and not to allow others to use your
33			* version of this file under the BSD license, indicate your decision
34			* by deleting the provisions above and replace them with the notice
35			* and other provisions required by the GPL. If you do not delete the
36			* provisions above, a recipient may use your version of this file under
37			* either the BSD or the GPL.
38	root	1.1	*/
39
40			#include <stddef.h>
41			#include <stdlib.h>
42	root	1.10	#include <assert.h>
43	root	1.1
44	root	1.18	#ifndef WIN32
45			# include <sys/time.h>
46			#endif
47
48	root	1.24	#ifdef EV_EVENT_H
49			# include EV_EVENT_H
50			#else
51			# include "event.h"
52			#endif
53	root	1.1
54	root	1.9	#if EV_MULTIPLICITY
55			# define dLOOPev struct ev_loop loop = (struct ev_loop )ev->ev_base
56			# define dLOOPbase struct ev_loop loop = (struct ev_loop )base
57	root	1.8	#else
58			# define dLOOPev
59			# define dLOOPbase
60			#endif
61	root	1.7
62	root	1.9	/* never accessed, will always be cast from/to ev_loop */
63	root	1.1	struct event_base
64			{
65			int dummy;
66			};
67
68	root	1.10	static struct event_base *x_cur;
69	root	1.1
70			static void
71			tv_set (struct timeval *tv, ev_tstamp at)
72			{
73			tv->tv_sec = (long)at;
74			tv->tv_usec = (long)((at - (ev_tstamp)tv->tv_sec) * 1e6);
75			}
76
77			static ev_tstamp
78			tv_get (struct timeval *tv)
79			{
80			if (tv)
81			return tv->tv_sec + tv->tv_usec * 1e-6;
82			else
83			return -1.;
84			}
85
86			#define EVENT_VERSION(a,b) # a "." # b
87
88			const char *event_get_version (void)
89			{
90			return EVENT_VERSION (EV_VERSION_MAJOR, EV_VERSION_MINOR);
91			}
92
93			const char *event_get_method (void)
94			{
95			return "libev";
96			}
97
98			void *event_init (void)
99			{
100	root	1.9	#if EV_MULTIPLICITY
101	root	1.10	if (x_cur)
102	root	1.28	x_cur = (struct event_base *)ev_loop_new (EVFLAG_AUTO);
103	root	1.10	else
104	root	1.28	x_cur = (struct event_base *)ev_default_loop (EVFLAG_AUTO);
105	root	1.9	#else
106	root	1.10	assert (("multiple event bases not supported when not compiled with EV_MULTIPLICITY", !x_cur));
107
108	root	1.28	x_cur = (struct event_base *)(long)ev_default_loop (EVFLAG_AUTO);
109	root	1.9	#endif
110	root	1.1
111	root	1.9	return x_cur;
112	root	1.1	}
113
114			void event_base_free (struct event_base *base)
115			{
116	root	1.8	dLOOPbase;
117
118	root	1.9	#if EV_MULTIPLICITY
119	root	1.29	if (ev_default_loop (EVFLAG_AUTO) != loop)
120	root	1.13	ev_loop_destroy (loop);
121	root	1.9	#endif
122	root	1.1	}
123
124			int event_dispatch (void)
125			{
126			return event_base_dispatch (x_cur);
127			}
128
129	root	1.12	#ifdef EV_STANDALONE
130	root	1.1	void event_set_log_callback (event_log_cb cb)
131			{
132			/* nop */
133			}
134	root	1.5	#endif
135	root	1.1
136			int event_loop (int flags)
137			{
138			return event_base_loop (x_cur, flags);
139			}
140
141			int event_loopexit (struct timeval *tv)
142			{
143	root	1.5	return event_base_loopexit (x_cur, tv);
144	root	1.1	}
145
146			static void
147			x_cb (struct event *ev, int revents)
148			{
149			revents &= EV_READ \| EV_WRITE \| EV_TIMEOUT \| EV_SIGNAL;
150
151			ev->ev_res = revents;
152	root	1.26	ev->ev_callback (ev->ev_fd, (short)revents, ev->ev_arg);
153	root	1.1	}
154
155			static void
156	root	1.7	x_cb_sig (EV_P_ struct ev_signal *w, int revents)
157	root	1.1	{
158	root	1.20	struct event ev = (struct event )(((char *)w) - offsetof (struct event, iosig.sig));
159
160			if (revents & EV_ERROR)
161			event_del (ev);
162
163			x_cb (ev, revents);
164	root	1.1	}
165
166			static void
167	root	1.7	x_cb_io (EV_P_ struct ev_io *w, int revents)
168	root	1.1	{
169	root	1.7	struct event ev = (struct event )(((char *)w) - offsetof (struct event, iosig.io));
170
171	root	1.32	if ((revents & EV_ERROR) \|\| !(ev->ev_events & EV_PERSIST))
172	root	1.20	event_del (ev);
173	root	1.7
174			x_cb (ev, revents);
175	root	1.1	}
176
177			static void
178	root	1.7	x_cb_to (EV_P_ struct ev_timer *w, int revents)
179	root	1.1	{
180	root	1.14	struct event ev = (struct event )(((char *)w) - offsetof (struct event, to));
181
182			event_del (ev);
183
184			x_cb (ev, revents);
185	root	1.1	}
186
187			void event_set (struct event ev, int fd, short events, void (cb)(int, short, void ), void arg)
188			{
189	root	1.14	if (events & EV_SIGNAL)
190	root	1.25	ev_init (&ev->iosig.sig, x_cb_sig);
191	root	1.14	else
192	root	1.25	ev_init (&ev->iosig.io, x_cb_io);
193	root	1.4
194	root	1.25	ev_init (&ev->to, x_cb_to);
195	root	1.1
196	root	1.9	ev->ev_base = x_cur; /* not threadsafe, but its like libevent works */
197	root	1.1	ev->ev_fd = fd;
198			ev->ev_events = events;
199			ev->ev_pri = 0;
200			ev->ev_callback = cb;
201			ev->ev_arg = arg;
202			ev->ev_res = 0;
203	root	1.27	ev->ev_flags = EVLIST_INIT;
204	root	1.1	}
205
206			int event_once (int fd, short events, void (cb)(int, short, void ), void arg, struct timeval tv)
207			{
208	root	1.5	return event_base_once (x_cur, fd, events, cb, arg, tv);
209	root	1.1	}
210
211			int event_add (struct event ev, struct timeval tv)
212			{
213	root	1.7	dLOOPev;
214
215	root	1.4	if (ev->ev_events & EV_SIGNAL)
216	root	1.1	{
217	root	1.31	if (!ev_is_active (&ev->iosig.sig))
218			{
219			ev_signal_set (&ev->iosig.sig, ev->ev_fd);
220			ev_signal_start (EV_A_ &ev->iosig.sig);
221	root	1.27
222	root	1.31	ev->ev_flags \|= EVLIST_SIGNAL;
223			}
224	root	1.1	}
225	root	1.4	else if (ev->ev_events & (EV_READ \| EV_WRITE))
226	root	1.1	{
227	root	1.31	if (!ev_is_active (&ev->iosig.io))
228			{
229			ev_io_set (&ev->iosig.io, ev->ev_fd, ev->ev_events & (EV_READ \| EV_WRITE));
230			ev_io_start (EV_A_ &ev->iosig.io);
231	root	1.27
232	root	1.31	ev->ev_flags \|= EVLIST_INSERTED;
233			}
234	root	1.1	}
235
236	root	1.4	if (tv)
237	root	1.1	{
238	root	1.31	ev->to.repeat = tv_get (tv);
239			ev_timer_again (EV_A_ &ev->to);
240	root	1.27	ev->ev_flags \|= EVLIST_TIMEOUT;
241	root	1.1	}
242	root	1.31	else
243	root	1.32	{
244	root	1.31	ev_timer_stop (EV_A_ &ev->to);
245	root	1.32	ev->ev_flags &= ~EVLIST_TIMEOUT;
246			}
247	root	1.1
248	root	1.27	ev->ev_flags \|= EVLIST_ACTIVE;
249
250	root	1.1	return 0;
251			}
252
253			int event_del (struct event *ev)
254			{
255	root	1.7	dLOOPev;
256
257	root	1.4	if (ev->ev_events & EV_SIGNAL)
258	root	1.32	ev_signal_stop (EV_A_ &ev->iosig.sig);
259	root	1.16	else if (ev->ev_events & (EV_READ \| EV_WRITE))
260	root	1.32	ev_io_stop (EV_A_ &ev->iosig.io);
261	root	1.1
262			if (ev_is_active (&ev->to))
263	root	1.7	ev_timer_stop (EV_A_ &ev->to);
264	root	1.1
265	root	1.27	ev->ev_flags = EVLIST_INIT;
266
267	root	1.1	return 0;
268			}
269
270	root	1.21	void event_active (struct event *ev, int res, short ncalls)
271			{
272	root	1.23	dLOOPev;
273
274	root	1.21	if (res & EV_TIMEOUT)
275	root	1.23	ev_feed_event (EV_A_ &ev->to, res & EV_TIMEOUT);
276	root	1.21
277			if (res & EV_SIGNAL)
278	root	1.23	ev_feed_event (EV_A_ &ev->iosig.sig, res & EV_SIGNAL);
279	root	1.21
280			if (res & (EV_READ \| EV_WRITE))
281	root	1.23	ev_feed_event (EV_A_ &ev->iosig.io, res & (EV_READ \| EV_WRITE));
282	root	1.21	}
283
284	root	1.1	int event_pending (struct event ev, short events, struct timeval tv)
285			{
286	root	1.18	short revents = 0;
287	root	1.7	dLOOPev;
288
289	root	1.4	if (ev->ev_events & EV_SIGNAL)
290			{
291			/* sig */
292	root	1.14	if (ev_is_active (&ev->iosig.sig) \|\| ev_is_pending (&ev->iosig.sig))
293	root	1.4	revents \|= EV_SIGNAL;
294			}
295	root	1.16	else if (ev->ev_events & (EV_READ \| EV_WRITE))
296	root	1.4	{
297			/* io */
298	root	1.14	if (ev_is_active (&ev->iosig.io) \|\| ev_is_pending (&ev->iosig.io))
299	root	1.4	revents \|= ev->ev_events & (EV_READ \| EV_WRITE);
300			}
301	root	1.1
302	root	1.14	if (ev->ev_events & EV_TIMEOUT \|\| ev_is_active (&ev->to) \|\| ev_is_pending (&ev->to))
303	root	1.1	{
304			revents \|= EV_TIMEOUT;
305
306			if (tv)
307	root	1.7	tv_set (tv, ev_now (EV_A)); /* not sure if this is right :) */
308	root	1.1	}
309
310			return events & revents;
311			}
312
313			int event_priority_init (int npri)
314			{
315			return event_base_priority_init (x_cur, npri);
316			}
317
318			int event_priority_set (struct event *ev, int pri)
319			{
320			ev->ev_pri = pri;
321
322			return 0;
323			}
324
325			int event_base_set (struct event_base base, struct event ev)
326			{
327			ev->ev_base = base;
328
329			return 0;
330			}
331
332			int event_base_loop (struct event_base *base, int flags)
333			{
334	root	1.7	dLOOPbase;
335	root	1.8
336			ev_loop (EV_A_ flags);
337	root	1.1
338			return 0;
339			}
340
341			int event_base_dispatch (struct event_base *base)
342			{
343			return event_base_loop (base, 0);
344			}
345
346			static void
347	root	1.9	x_loopexit_cb (int revents, void *base)
348	root	1.1	{
349	root	1.9	dLOOPbase;
350
351	root	1.30	ev_unloop (EV_A_ EVUNLOOP_ONE);
352	root	1.1	}
353
354			int event_base_loopexit (struct event_base base, struct timeval tv)
355			{
356	root	1.18	ev_tstamp after = tv_get (tv);
357	root	1.7	dLOOPbase;
358	root	1.1
359	root	1.7	ev_once (EV_A_ -1, 0, after >= 0. ? after : 0., x_loopexit_cb, (void *)base);
360	root	1.5
361	root	1.34	return 0;
362	root	1.1	}
363
364			struct x_once
365			{
366			int fd;
367			void (cb)(int, short, void );
368			void *arg;
369			};
370
371			static void
372			x_once_cb (int revents, void *arg)
373			{
374	root	1.19	struct x_once once = (struct x_once )arg;
375	root	1.1
376	root	1.26	once->cb (once->fd, (short)revents, once->arg);
377	root	1.1	free (once);
378			}
379
380			int event_base_once (struct event_base base, int fd, short events, void (cb)(int, short, void ), void arg, struct timeval *tv)
381			{
382	root	1.19	struct x_once once = (struct x_once )malloc (sizeof (struct x_once));
383	root	1.7	dLOOPbase;
384	root	1.1
385			if (!once)
386			return -1;
387
388			once->fd = fd;
389			once->cb = cb;
390			once->arg = arg;
391
392	root	1.7	ev_once (EV_A_ fd, events & (EV_READ \| EV_WRITE), tv_get (tv), x_once_cb, (void *)once);
393	root	1.1
394			return 0;
395			}
396
397			int event_base_priority_init (struct event_base *base, int npri)
398			{
399	root	1.13	/dLOOPbase;/
400	root	1.7
401	root	1.1	return 0;
402			}
403