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
 * modification, are permitted provided that the following conditions are
 * met:
 *
 *     * Redistributions of source code must retain the above copyright
 *       notice, this list of conditions and the following disclaimer.
 *
 *     * 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 COPYRIGHT HOLDERS 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 THE COPYRIGHT
 * OWNER 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.
 */

#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 -1;
}

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:	1.32
Committed:	Thu Nov 29 12:21:06 2007 UTC (16 years, 5 months ago) by root
Content type:	text/plain
Branch:	MAIN
CVS Tags:	rel-2_0, rel-1_71, rel-1_8, rel-1_72, rel-1_6, rel-1_81, rel-1_86, rel-1_85
Changes since 1.31:	+6 -17 lines
Log Message:	many fixes to event emulation
#	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			* Redistribution and use in source and binary forms, with or without
8			* modification, are permitted provided that the following conditions are
9			* met:
10			*
11			* * Redistributions of source code must retain the above copyright
12			* notice, this list of conditions and the following disclaimer.
13			*
14			* * Redistributions in binary form must reproduce the above
15			* copyright notice, this list of conditions and the following
16			* disclaimer in the documentation and/or other materials provided
17			* with the distribution.
18			*
19			* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
20			* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
21			* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
22			* A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
23			* OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
24			* SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
25			* LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
26			* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
27			* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
28			* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
29			* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
30			*/
31
32			#include <stddef.h>
33			#include <stdlib.h>
34	root	1.10	#include <assert.h>
35	root	1.1
36	root	1.18	#ifndef WIN32
37			# include <sys/time.h>
38			#endif
39
40	root	1.24	#ifdef EV_EVENT_H
41			# include EV_EVENT_H
42			#else
43			# include "event.h"
44			#endif
45	root	1.1
46	root	1.9	#if EV_MULTIPLICITY
47			# define dLOOPev struct ev_loop loop = (struct ev_loop )ev->ev_base
48			# define dLOOPbase struct ev_loop loop = (struct ev_loop )base
49	root	1.8	#else
50			# define dLOOPev
51			# define dLOOPbase
52			#endif
53	root	1.7
54	root	1.9	/* never accessed, will always be cast from/to ev_loop */
55	root	1.1	struct event_base
56			{
57			int dummy;
58			};
59
60	root	1.10	static struct event_base *x_cur;
61	root	1.1
62			static void
63			tv_set (struct timeval *tv, ev_tstamp at)
64			{
65			tv->tv_sec = (long)at;
66			tv->tv_usec = (long)((at - (ev_tstamp)tv->tv_sec) * 1e6);
67			}
68
69			static ev_tstamp
70			tv_get (struct timeval *tv)
71			{
72			if (tv)
73			return tv->tv_sec + tv->tv_usec * 1e-6;
74			else
75			return -1.;
76			}
77
78			#define EVENT_VERSION(a,b) # a "." # b
79
80			const char *event_get_version (void)
81			{
82			return EVENT_VERSION (EV_VERSION_MAJOR, EV_VERSION_MINOR);
83			}
84
85			const char *event_get_method (void)
86			{
87			return "libev";
88			}
89
90			void *event_init (void)
91			{
92	root	1.9	#if EV_MULTIPLICITY
93	root	1.10	if (x_cur)
94	root	1.28	x_cur = (struct event_base *)ev_loop_new (EVFLAG_AUTO);
95	root	1.10	else
96	root	1.28	x_cur = (struct event_base *)ev_default_loop (EVFLAG_AUTO);
97	root	1.9	#else
98	root	1.10	assert (("multiple event bases not supported when not compiled with EV_MULTIPLICITY", !x_cur));
99
100	root	1.28	x_cur = (struct event_base *)(long)ev_default_loop (EVFLAG_AUTO);
101	root	1.9	#endif
102	root	1.1
103	root	1.9	return x_cur;
104	root	1.1	}
105
106			void event_base_free (struct event_base *base)
107			{
108	root	1.8	dLOOPbase;
109
110	root	1.9	#if EV_MULTIPLICITY
111	root	1.29	if (ev_default_loop (EVFLAG_AUTO) != loop)
112	root	1.13	ev_loop_destroy (loop);
113	root	1.9	#endif
114	root	1.1	}
115
116			int event_dispatch (void)
117			{
118			return event_base_dispatch (x_cur);
119			}
120
121	root	1.12	#ifdef EV_STANDALONE
122	root	1.1	void event_set_log_callback (event_log_cb cb)
123			{
124			/* nop */
125			}
126	root	1.5	#endif
127	root	1.1
128			int event_loop (int flags)
129			{
130			return event_base_loop (x_cur, flags);
131			}
132
133			int event_loopexit (struct timeval *tv)
134			{
135	root	1.5	return event_base_loopexit (x_cur, tv);
136	root	1.1	}
137
138			static void
139			x_cb (struct event *ev, int revents)
140			{
141			revents &= EV_READ \| EV_WRITE \| EV_TIMEOUT \| EV_SIGNAL;
142
143			ev->ev_res = revents;
144	root	1.26	ev->ev_callback (ev->ev_fd, (short)revents, ev->ev_arg);
145	root	1.1	}
146
147			static void
148	root	1.7	x_cb_sig (EV_P_ struct ev_signal *w, int revents)
149	root	1.1	{
150	root	1.20	struct event ev = (struct event )(((char *)w) - offsetof (struct event, iosig.sig));
151
152			if (revents & EV_ERROR)
153			event_del (ev);
154
155			x_cb (ev, revents);
156	root	1.1	}
157
158			static void
159	root	1.7	x_cb_io (EV_P_ struct ev_io *w, int revents)
160	root	1.1	{
161	root	1.7	struct event ev = (struct event )(((char *)w) - offsetof (struct event, iosig.io));
162
163	root	1.32	if ((revents & EV_ERROR) \|\| !(ev->ev_events & EV_PERSIST))
164	root	1.20	event_del (ev);
165	root	1.7
166			x_cb (ev, revents);
167	root	1.1	}
168
169			static void
170	root	1.7	x_cb_to (EV_P_ struct ev_timer *w, int revents)
171	root	1.1	{
172	root	1.14	struct event ev = (struct event )(((char *)w) - offsetof (struct event, to));
173
174			event_del (ev);
175
176			x_cb (ev, revents);
177	root	1.1	}
178
179			void event_set (struct event ev, int fd, short events, void (cb)(int, short, void ), void arg)
180			{
181	root	1.14	if (events & EV_SIGNAL)
182	root	1.25	ev_init (&ev->iosig.sig, x_cb_sig);
183	root	1.14	else
184	root	1.25	ev_init (&ev->iosig.io, x_cb_io);
185	root	1.4
186	root	1.25	ev_init (&ev->to, x_cb_to);
187	root	1.1
188	root	1.9	ev->ev_base = x_cur; /* not threadsafe, but its like libevent works */
189	root	1.1	ev->ev_fd = fd;
190			ev->ev_events = events;
191			ev->ev_pri = 0;
192			ev->ev_callback = cb;
193			ev->ev_arg = arg;
194			ev->ev_res = 0;
195	root	1.27	ev->ev_flags = EVLIST_INIT;
196	root	1.1	}
197
198			int event_once (int fd, short events, void (cb)(int, short, void ), void arg, struct timeval tv)
199			{
200	root	1.5	return event_base_once (x_cur, fd, events, cb, arg, tv);
201	root	1.1	}
202
203			int event_add (struct event ev, struct timeval tv)
204			{
205	root	1.7	dLOOPev;
206
207	root	1.4	if (ev->ev_events & EV_SIGNAL)
208	root	1.1	{
209	root	1.31	if (!ev_is_active (&ev->iosig.sig))
210			{
211			ev_signal_set (&ev->iosig.sig, ev->ev_fd);
212			ev_signal_start (EV_A_ &ev->iosig.sig);
213	root	1.27
214	root	1.31	ev->ev_flags \|= EVLIST_SIGNAL;
215			}
216	root	1.1	}
217	root	1.4	else if (ev->ev_events & (EV_READ \| EV_WRITE))
218	root	1.1	{
219	root	1.31	if (!ev_is_active (&ev->iosig.io))
220			{
221			ev_io_set (&ev->iosig.io, ev->ev_fd, ev->ev_events & (EV_READ \| EV_WRITE));
222			ev_io_start (EV_A_ &ev->iosig.io);
223	root	1.27
224	root	1.31	ev->ev_flags \|= EVLIST_INSERTED;
225			}
226	root	1.1	}
227
228	root	1.4	if (tv)
229	root	1.1	{
230	root	1.31	ev->to.repeat = tv_get (tv);
231			ev_timer_again (EV_A_ &ev->to);
232	root	1.27	ev->ev_flags \|= EVLIST_TIMEOUT;
233	root	1.1	}
234	root	1.31	else
235	root	1.32	{
236	root	1.31	ev_timer_stop (EV_A_ &ev->to);
237	root	1.32	ev->ev_flags &= ~EVLIST_TIMEOUT;
238			}
239	root	1.1
240	root	1.27	ev->ev_flags \|= EVLIST_ACTIVE;
241
242	root	1.1	return 0;
243			}
244
245			int event_del (struct event *ev)
246			{
247	root	1.7	dLOOPev;
248
249	root	1.4	if (ev->ev_events & EV_SIGNAL)
250	root	1.32	ev_signal_stop (EV_A_ &ev->iosig.sig);
251	root	1.16	else if (ev->ev_events & (EV_READ \| EV_WRITE))
252	root	1.32	ev_io_stop (EV_A_ &ev->iosig.io);
253	root	1.1
254			if (ev_is_active (&ev->to))
255	root	1.7	ev_timer_stop (EV_A_ &ev->to);
256	root	1.1
257	root	1.27	ev->ev_flags = EVLIST_INIT;
258
259	root	1.1	return 0;
260			}
261
262	root	1.21	void event_active (struct event *ev, int res, short ncalls)
263			{
264	root	1.23	dLOOPev;
265
266	root	1.21	if (res & EV_TIMEOUT)
267	root	1.23	ev_feed_event (EV_A_ &ev->to, res & EV_TIMEOUT);
268	root	1.21
269			if (res & EV_SIGNAL)
270	root	1.23	ev_feed_event (EV_A_ &ev->iosig.sig, res & EV_SIGNAL);
271	root	1.21
272			if (res & (EV_READ \| EV_WRITE))
273	root	1.23	ev_feed_event (EV_A_ &ev->iosig.io, res & (EV_READ \| EV_WRITE));
274	root	1.21	}
275
276	root	1.1	int event_pending (struct event ev, short events, struct timeval tv)
277			{
278	root	1.18	short revents = 0;
279	root	1.7	dLOOPev;
280
281	root	1.1
282	root	1.4	if (ev->ev_events & EV_SIGNAL)
283			{
284			/* sig */
285	root	1.14	if (ev_is_active (&ev->iosig.sig) \|\| ev_is_pending (&ev->iosig.sig))
286	root	1.4	revents \|= EV_SIGNAL;
287			}
288	root	1.16	else if (ev->ev_events & (EV_READ \| EV_WRITE))
289	root	1.4	{
290			/* io */
291	root	1.14	if (ev_is_active (&ev->iosig.io) \|\| ev_is_pending (&ev->iosig.io))
292	root	1.4	revents \|= ev->ev_events & (EV_READ \| EV_WRITE);
293			}
294	root	1.1
295	root	1.14	if (ev->ev_events & EV_TIMEOUT \|\| ev_is_active (&ev->to) \|\| ev_is_pending (&ev->to))
296	root	1.1	{
297			revents \|= EV_TIMEOUT;
298
299			if (tv)
300	root	1.7	tv_set (tv, ev_now (EV_A)); /* not sure if this is right :) */
301	root	1.1	}
302
303			return events & revents;
304			}
305
306			int event_priority_init (int npri)
307			{
308			return event_base_priority_init (x_cur, npri);
309			}
310
311			int event_priority_set (struct event *ev, int pri)
312			{
313			ev->ev_pri = pri;
314
315			return 0;
316			}
317
318			int event_base_set (struct event_base base, struct event ev)
319			{
320			ev->ev_base = base;
321
322			return 0;
323			}
324
325			int event_base_loop (struct event_base *base, int flags)
326			{
327	root	1.7	dLOOPbase;
328	root	1.8
329			ev_loop (EV_A_ flags);
330	root	1.1
331			return 0;
332			}
333
334			int event_base_dispatch (struct event_base *base)
335			{
336			return event_base_loop (base, 0);
337			}
338
339			static void
340	root	1.9	x_loopexit_cb (int revents, void *base)
341	root	1.1	{
342	root	1.9	dLOOPbase;
343
344	root	1.30	ev_unloop (EV_A_ EVUNLOOP_ONE);
345	root	1.1	}
346
347			int event_base_loopexit (struct event_base base, struct timeval tv)
348			{
349	root	1.18	ev_tstamp after = tv_get (tv);
350	root	1.7	dLOOPbase;
351	root	1.1
352	root	1.7	ev_once (EV_A_ -1, 0, after >= 0. ? after : 0., x_loopexit_cb, (void *)base);
353	root	1.5
354			return -1;
355	root	1.1	}
356
357			struct x_once
358			{
359			int fd;
360			void (cb)(int, short, void );
361			void *arg;
362			};
363
364			static void
365			x_once_cb (int revents, void *arg)
366			{
367	root	1.19	struct x_once once = (struct x_once )arg;
368	root	1.1
369	root	1.26	once->cb (once->fd, (short)revents, once->arg);
370	root	1.1	free (once);
371			}
372
373			int event_base_once (struct event_base base, int fd, short events, void (cb)(int, short, void ), void arg, struct timeval *tv)
374			{
375	root	1.19	struct x_once once = (struct x_once )malloc (sizeof (struct x_once));
376	root	1.7	dLOOPbase;
377	root	1.1
378			if (!once)
379			return -1;
380
381			once->fd = fd;
382			once->cb = cb;
383			once->arg = arg;
384
385	root	1.7	ev_once (EV_A_ fd, events & (EV_READ \| EV_WRITE), tv_get (tv), x_once_cb, (void *)once);
386	root	1.1
387			return 0;
388			}
389
390			int event_base_priority_init (struct event_base *base, int npri)
391			{
392	root	1.13	/dLOOPbase;/
393	root	1.7
394	root	1.1	return 0;
395			}
396