libev/event.c

/*
 * libevent compatibility layer
 *
 * Copyright (c) 2007,2008,2009,2010,2012 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>

#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 *ev_x_cur;

static ev_tstamp
ev_tv_get (struct timeval *tv)
{
  if (tv)
    {
      ev_tstamp after = tv->tv_sec + tv->tv_usec * 1e-6;
      return after ? after : 1e-6;
    }
  else
    return -1.;
}

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

const char *
event_get_version (void)
{
  /* returns ABI, not API or library, version */
  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 (ev_x_cur)
    ev_x_cur = (struct event_base *)ev_loop_new (EVFLAG_AUTO);
  else
    ev_x_cur = (struct event_base *)ev_default_loop (EVFLAG_AUTO);
#else
  assert (("libev: multiple event bases not supported when not compiled with EV_MULTIPLICITY", !ev_x_cur));

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

  return ev_x_cur;
}

const char *
event_base_get_method (const struct event_base *base)
{
  return "libev";
}

struct event_base *
event_base_new (void)
{
#if EV_MULTIPLICITY
  return (struct event_base *)ev_loop_new (EVFLAG_AUTO);
#else
  assert (("libev: multiple event bases not supported when not compiled with EV_MULTIPLICITY"));
  return NULL;
#endif
}

void event_base_free (struct event_base *base)
{
  dLOOPbase;

#if EV_MULTIPLICITY
  if (!ev_is_default_loop (loop))
    ev_loop_destroy (loop);
#endif
}

int event_dispatch (void)
{
  return event_base_dispatch (ev_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 (ev_x_cur, flags);
}

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

event_callback_fn event_get_callback
(const struct event *ev)
{
  return ev->ev_callback;
}

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

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

static void
ev_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);

  ev_x_cb (ev, revents);
}

static void
ev_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);

  ev_x_cb (ev, revents);
}

static void
ev_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);

  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, ev_x_cb_sig);
  else
    ev_init (&ev->iosig.io, ev_x_cb_io);

  ev_init (&ev->to, ev_x_cb_to);

  ev->ev_base     = ev_x_cur; /* not threadsafe, but it's how 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 (ev_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 = ev_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)
        {
          ev_tstamp at = ev_now (EV_A);

          tv->tv_sec  = (long)at;
          tv->tv_usec = (long)((at - (ev_tstamp)tv->tv_sec) * 1e6);
        }
    }

  return events & revents;
}

int event_priority_init (int npri)
{
  return event_base_priority_init (ev_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;

  return !ev_run (EV_A_ flags);
}

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

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

  ev_break (EV_A_ EVBREAK_ONE);
}

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

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

  return 0;
}

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

static void
ev_x_once_cb (int revents, void *arg)
{
  struct ev_x_once *once = (struct ev_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 ev_x_once *once = (struct ev_x_once *)malloc (sizeof (struct ev_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), ev_tv_get (tv), ev_x_once_cb, (void *)once);

  return 0;
}

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

  return 0;
}

Revision:	1.52
Committed:	Mon Apr 2 23:14:41 2012 UTC (12 years ago) by root
Content type:	text/plain
Branch:	MAIN
CVS Tags:	EV-rel-4_28, EV-rel-4_29, EV-rel-4_27, EV-rel-4_22, rel-4_33, rel-4_23, rel-4_22, rel-4_20, rel-4_27, rel-4_25, rel-4_24, rxvt-unicode-rel-9_16, EV-rel-4_31, EV-rel-4_30, rel-4_31, rel-4_15, rel-4_18, rel-4_19, HEAD
Changes since 1.51:	+28 -5 lines
Log Message:	* empty log message *
#	Content
1	/*
2	* libevent compatibility layer
3	*
4	* Copyright (c) 2007,2008,2009,2010,2012 Marc Alexander Lehmann <libev@schmorp.de>
5	* All rights reserved.
6	*
7	* 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	*
28	* 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	*/
39
40	#include <stddef.h>
41	#include <stdlib.h>
42	#include <assert.h>
43
44	#ifdef EV_EVENT_H
45	# include EV_EVENT_H
46	#else
47	# include "event.h"
48	#endif
49
50	#if EV_MULTIPLICITY
51	# define dLOOPev struct ev_loop loop = (struct ev_loop )ev->ev_base
52	# define dLOOPbase struct ev_loop loop = (struct ev_loop )base
53	#else
54	# define dLOOPev
55	# define dLOOPbase
56	#endif
57
58	/* never accessed, will always be cast from/to ev_loop */
59	struct event_base
60	{
61	int dummy;
62	};
63
64	static struct event_base *ev_x_cur;
65
66	static ev_tstamp
67	ev_tv_get (struct timeval *tv)
68	{
69	if (tv)
70	{
71	ev_tstamp after = tv->tv_sec + tv->tv_usec * 1e-6;
72	return after ? after : 1e-6;
73	}
74	else
75	return -1.;
76	}
77
78	#define EVENT_STRINGIFY(s) # s
79	#define EVENT_VERSION(a,b) EVENT_STRINGIFY (a) "." EVENT_STRINGIFY (b)
80
81	const char *
82	event_get_version (void)
83	{
84	/* returns ABI, not API or library, version */
85	return EVENT_VERSION (EV_VERSION_MAJOR, EV_VERSION_MINOR);
86	}
87
88	const char *
89	event_get_method (void)
90	{
91	return "libev";
92	}
93
94	void *event_init (void)
95	{
96	#if EV_MULTIPLICITY
97	if (ev_x_cur)
98	ev_x_cur = (struct event_base *)ev_loop_new (EVFLAG_AUTO);
99	else
100	ev_x_cur = (struct event_base *)ev_default_loop (EVFLAG_AUTO);
101	#else
102	assert (("libev: multiple event bases not supported when not compiled with EV_MULTIPLICITY", !ev_x_cur));
103
104	ev_x_cur = (struct event_base *)(long)ev_default_loop (EVFLAG_AUTO);
105	#endif
106
107	return ev_x_cur;
108	}
109
110	const char *
111	event_base_get_method (const struct event_base *base)
112	{
113	return "libev";
114	}
115
116	struct event_base *
117	event_base_new (void)
118	{
119	#if EV_MULTIPLICITY
120	return (struct event_base *)ev_loop_new (EVFLAG_AUTO);
121	#else
122	assert (("libev: multiple event bases not supported when not compiled with EV_MULTIPLICITY"));
123	return NULL;
124	#endif
125	}
126
127	void event_base_free (struct event_base *base)
128	{
129	dLOOPbase;
130
131	#if EV_MULTIPLICITY
132	if (!ev_is_default_loop (loop))
133	ev_loop_destroy (loop);
134	#endif
135	}
136
137	int event_dispatch (void)
138	{
139	return event_base_dispatch (ev_x_cur);
140	}
141
142	#ifdef EV_STANDALONE
143	void event_set_log_callback (event_log_cb cb)
144	{
145	/* nop */
146	}
147	#endif
148
149	int event_loop (int flags)
150	{
151	return event_base_loop (ev_x_cur, flags);
152	}
153
154	int event_loopexit (struct timeval *tv)
155	{
156	return event_base_loopexit (ev_x_cur, tv);
157	}
158
159	event_callback_fn event_get_callback
160	(const struct event *ev)
161	{
162	return ev->ev_callback;
163	}
164
165	static void
166	ev_x_cb (struct event *ev, int revents)
167	{
168	revents &= EV_READ \| EV_WRITE \| EV_TIMER \| EV_SIGNAL;
169
170	ev->ev_res = revents;
171	ev->ev_callback (ev->ev_fd, (short)revents, ev->ev_arg);
172	}
173
174	static void
175	ev_x_cb_sig (EV_P_ struct ev_signal *w, int revents)
176	{
177	struct event ev = (struct event )(((char *)w) - offsetof (struct event, iosig.sig));
178
179	if (revents & EV_ERROR)
180	event_del (ev);
181
182	ev_x_cb (ev, revents);
183	}
184
185	static void
186	ev_x_cb_io (EV_P_ struct ev_io *w, int revents)
187	{
188	struct event ev = (struct event )(((char *)w) - offsetof (struct event, iosig.io));
189
190	if ((revents & EV_ERROR) \|\| !(ev->ev_events & EV_PERSIST))
191	event_del (ev);
192
193	ev_x_cb (ev, revents);
194	}
195
196	static void
197	ev_x_cb_to (EV_P_ struct ev_timer *w, int revents)
198	{
199	struct event ev = (struct event )(((char *)w) - offsetof (struct event, to));
200
201	event_del (ev);
202
203	ev_x_cb (ev, revents);
204	}
205
206	void event_set (struct event ev, int fd, short events, void (cb)(int, short, void ), void arg)
207	{
208	if (events & EV_SIGNAL)
209	ev_init (&ev->iosig.sig, ev_x_cb_sig);
210	else
211	ev_init (&ev->iosig.io, ev_x_cb_io);
212
213	ev_init (&ev->to, ev_x_cb_to);
214
215	ev->ev_base = ev_x_cur; /* not threadsafe, but it's how libevent works */
216	ev->ev_fd = fd;
217	ev->ev_events = events;
218	ev->ev_pri = 0;
219	ev->ev_callback = cb;
220	ev->ev_arg = arg;
221	ev->ev_res = 0;
222	ev->ev_flags = EVLIST_INIT;
223	}
224
225	int event_once (int fd, short events, void (cb)(int, short, void ), void arg, struct timeval tv)
226	{
227	return event_base_once (ev_x_cur, fd, events, cb, arg, tv);
228	}
229
230	int event_add (struct event ev, struct timeval tv)
231	{
232	dLOOPev;
233
234	if (ev->ev_events & EV_SIGNAL)
235	{
236	if (!ev_is_active (&ev->iosig.sig))
237	{
238	ev_signal_set (&ev->iosig.sig, ev->ev_fd);
239	ev_signal_start (EV_A_ &ev->iosig.sig);
240
241	ev->ev_flags \|= EVLIST_SIGNAL;
242	}
243	}
244	else if (ev->ev_events & (EV_READ \| EV_WRITE))
245	{
246	if (!ev_is_active (&ev->iosig.io))
247	{
248	ev_io_set (&ev->iosig.io, ev->ev_fd, ev->ev_events & (EV_READ \| EV_WRITE));
249	ev_io_start (EV_A_ &ev->iosig.io);
250
251	ev->ev_flags \|= EVLIST_INSERTED;
252	}
253	}
254
255	if (tv)
256	{
257	ev->to.repeat = ev_tv_get (tv);
258	ev_timer_again (EV_A_ &ev->to);
259	ev->ev_flags \|= EVLIST_TIMEOUT;
260	}
261	else
262	{
263	ev_timer_stop (EV_A_ &ev->to);
264	ev->ev_flags &= ~EVLIST_TIMEOUT;
265	}
266
267	ev->ev_flags \|= EVLIST_ACTIVE;
268
269	return 0;
270	}
271
272	int event_del (struct event *ev)
273	{
274	dLOOPev;
275
276	if (ev->ev_events & EV_SIGNAL)
277	ev_signal_stop (EV_A_ &ev->iosig.sig);
278	else if (ev->ev_events & (EV_READ \| EV_WRITE))
279	ev_io_stop (EV_A_ &ev->iosig.io);
280
281	if (ev_is_active (&ev->to))
282	ev_timer_stop (EV_A_ &ev->to);
283
284	ev->ev_flags = EVLIST_INIT;
285
286	return 0;
287	}
288
289	void event_active (struct event *ev, int res, short ncalls)
290	{
291	dLOOPev;
292
293	if (res & EV_TIMEOUT)
294	ev_feed_event (EV_A_ &ev->to, res & EV_TIMEOUT);
295
296	if (res & EV_SIGNAL)
297	ev_feed_event (EV_A_ &ev->iosig.sig, res & EV_SIGNAL);
298
299	if (res & (EV_READ \| EV_WRITE))
300	ev_feed_event (EV_A_ &ev->iosig.io, res & (EV_READ \| EV_WRITE));
301	}
302
303	int event_pending (struct event ev, short events, struct timeval tv)
304	{
305	short revents = 0;
306	dLOOPev;
307
308	if (ev->ev_events & EV_SIGNAL)
309	{
310	/* sig */
311	if (ev_is_active (&ev->iosig.sig) \|\| ev_is_pending (&ev->iosig.sig))
312	revents \|= EV_SIGNAL;
313	}
314	else if (ev->ev_events & (EV_READ \| EV_WRITE))
315	{
316	/* io */
317	if (ev_is_active (&ev->iosig.io) \|\| ev_is_pending (&ev->iosig.io))
318	revents \|= ev->ev_events & (EV_READ \| EV_WRITE);
319	}
320
321	if (ev->ev_events & EV_TIMEOUT \|\| ev_is_active (&ev->to) \|\| ev_is_pending (&ev->to))
322	{
323	revents \|= EV_TIMEOUT;
324
325	if (tv)
326	{
327	ev_tstamp at = ev_now (EV_A);
328
329	tv->tv_sec = (long)at;
330	tv->tv_usec = (long)((at - (ev_tstamp)tv->tv_sec) * 1e6);
331	}
332	}
333
334	return events & revents;
335	}
336
337	int event_priority_init (int npri)
338	{
339	return event_base_priority_init (ev_x_cur, npri);
340	}
341
342	int event_priority_set (struct event *ev, int pri)
343	{
344	ev->ev_pri = pri;
345
346	return 0;
347	}
348
349	int event_base_set (struct event_base base, struct event ev)
350	{
351	ev->ev_base = base;
352
353	return 0;
354	}
355
356	int event_base_loop (struct event_base *base, int flags)
357	{
358	dLOOPbase;
359
360	return !ev_run (EV_A_ flags);
361	}
362
363	int event_base_dispatch (struct event_base *base)
364	{
365	return event_base_loop (base, 0);
366	}
367
368	static void
369	ev_x_loopexit_cb (int revents, void *base)
370	{
371	dLOOPbase;
372
373	ev_break (EV_A_ EVBREAK_ONE);
374	}
375
376	int event_base_loopexit (struct event_base base, struct timeval tv)
377	{
378	ev_tstamp after = ev_tv_get (tv);
379	dLOOPbase;
380
381	ev_once (EV_A_ -1, 0, after >= 0. ? after : 0., ev_x_loopexit_cb, (void *)base);
382
383	return 0;
384	}
385
386	struct ev_x_once
387	{
388	int fd;
389	void (cb)(int, short, void );
390	void *arg;
391	};
392
393	static void
394	ev_x_once_cb (int revents, void *arg)
395	{
396	struct ev_x_once once = (struct ev_x_once )arg;
397
398	once->cb (once->fd, (short)revents, once->arg);
399	free (once);
400	}
401
402	int event_base_once (struct event_base base, int fd, short events, void (cb)(int, short, void ), void arg, struct timeval *tv)
403	{
404	struct ev_x_once once = (struct ev_x_once )malloc (sizeof (struct ev_x_once));
405	dLOOPbase;
406
407	if (!once)
408	return -1;
409
410	once->fd = fd;
411	once->cb = cb;
412	once->arg = arg;
413
414	ev_once (EV_A_ fd, events & (EV_READ \| EV_WRITE), ev_tv_get (tv), ev_x_once_cb, (void *)once);
415
416	return 0;
417	}
418
419	int event_base_priority_init (struct event_base *base, int npri)
420	{
421	/dLOOPbase;/
422
423	return 0;
424	}
425