libev/event.c

/*
 * libevent compatibility layer
 *
 * Copyright (c) 2007,2008 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 void
ev_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
ev_tv_get (struct timeval *tv)
{
  if (tv)
    return tv->tv_sec + tv->tv_usec * 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;
}

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 (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);
}

static void
ev_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
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_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 (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;

  ev_loop (EV_A_ flags);

  return 0;
}

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_unloop (EV_A_ EVUNLOOP_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:	1.40
Committed:	Tue Jan 6 19:57:32 2009 UTC (15 years, 4 months ago) by root
Content type:	text/plain
Branch:	MAIN
Changes since 1.39:	+3 -1 lines
Log Message:	* empty log message *
#	User	Rev	Content
1	root	1.1	/*
2			* libevent compatibility layer
3			*
4	root	1.36	* Copyright (c) 2007,2008 Marc Alexander Lehmann <libev@schmorp.de>
5	root	1.1	* 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	1.24	#ifdef EV_EVENT_H
45			# include EV_EVENT_H
46			#else
47			# include "event.h"
48			#endif
49	root	1.1
50	root	1.9	#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	root	1.8	#else
54			# define dLOOPev
55			# define dLOOPbase
56			#endif
57	root	1.7
58	root	1.9	/* never accessed, will always be cast from/to ev_loop */
59	root	1.1	struct event_base
60			{
61			int dummy;
62			};
63
64	root	1.37	static struct event_base *ev_x_cur;
65	root	1.1
66			static void
67	root	1.37	ev_tv_set (struct timeval *tv, ev_tstamp at)
68	root	1.1	{
69			tv->tv_sec = (long)at;
70			tv->tv_usec = (long)((at - (ev_tstamp)tv->tv_sec) * 1e6);
71			}
72
73			static ev_tstamp
74	root	1.37	ev_tv_get (struct timeval *tv)
75	root	1.1	{
76			if (tv)
77			return tv->tv_sec + tv->tv_usec * 1e-6;
78			else
79			return -1.;
80			}
81
82	root	1.40	#define EVENT_STRINGIFY(s) # s
83			#define EVENT_VERSION(a,b) EVENT_STRINGIFY (a) "." EVENT_STRINGIFY (b)
84	root	1.1
85			const char *event_get_version (void)
86			{
87	root	1.40	/* returns ABI, not API or library, version */
88	root	1.1	return EVENT_VERSION (EV_VERSION_MAJOR, EV_VERSION_MINOR);
89			}
90
91			const char *event_get_method (void)
92			{
93			return "libev";
94			}
95
96			void *event_init (void)
97			{
98	root	1.9	#if EV_MULTIPLICITY
99	root	1.37	if (ev_x_cur)
100			ev_x_cur = (struct event_base *)ev_loop_new (EVFLAG_AUTO);
101	root	1.10	else
102	root	1.37	ev_x_cur = (struct event_base *)ev_default_loop (EVFLAG_AUTO);
103	root	1.9	#else
104	root	1.39	assert (("libev: multiple event bases not supported when not compiled with EV_MULTIPLICITY", !ev_x_cur));
105	root	1.10
106	root	1.37	ev_x_cur = (struct event_base *)(long)ev_default_loop (EVFLAG_AUTO);
107	root	1.9	#endif
108	root	1.1
109	root	1.37	return ev_x_cur;
110	root	1.1	}
111
112			void event_base_free (struct event_base *base)
113			{
114	root	1.8	dLOOPbase;
115
116	root	1.9	#if EV_MULTIPLICITY
117	root	1.29	if (ev_default_loop (EVFLAG_AUTO) != loop)
118	root	1.13	ev_loop_destroy (loop);
119	root	1.9	#endif
120	root	1.1	}
121
122			int event_dispatch (void)
123			{
124	root	1.37	return event_base_dispatch (ev_x_cur);
125	root	1.1	}
126
127	root	1.12	#ifdef EV_STANDALONE
128	root	1.1	void event_set_log_callback (event_log_cb cb)
129			{
130			/* nop */
131			}
132	root	1.5	#endif
133	root	1.1
134			int event_loop (int flags)
135			{
136	root	1.37	return event_base_loop (ev_x_cur, flags);
137	root	1.1	}
138
139			int event_loopexit (struct timeval *tv)
140			{
141	root	1.37	return event_base_loopexit (ev_x_cur, tv);
142	root	1.1	}
143
144			static void
145	root	1.37	ev_x_cb (struct event *ev, int revents)
146	root	1.1	{
147			revents &= EV_READ \| EV_WRITE \| EV_TIMEOUT \| EV_SIGNAL;
148
149			ev->ev_res = revents;
150	root	1.26	ev->ev_callback (ev->ev_fd, (short)revents, ev->ev_arg);
151	root	1.1	}
152
153			static void
154	root	1.37	ev_x_cb_sig (EV_P_ struct ev_signal *w, int revents)
155	root	1.1	{
156	root	1.20	struct event ev = (struct event )(((char *)w) - offsetof (struct event, iosig.sig));
157
158			if (revents & EV_ERROR)
159			event_del (ev);
160
161	root	1.37	ev_x_cb (ev, revents);
162	root	1.1	}
163
164			static void
165	root	1.37	ev_x_cb_io (EV_P_ struct ev_io *w, int revents)
166	root	1.1	{
167	root	1.7	struct event ev = (struct event )(((char *)w) - offsetof (struct event, iosig.io));
168
169	root	1.32	if ((revents & EV_ERROR) \|\| !(ev->ev_events & EV_PERSIST))
170	root	1.20	event_del (ev);
171	root	1.7
172	root	1.37	ev_x_cb (ev, revents);
173	root	1.1	}
174
175			static void
176	root	1.37	ev_x_cb_to (EV_P_ struct ev_timer *w, int revents)
177	root	1.1	{
178	root	1.14	struct event ev = (struct event )(((char *)w) - offsetof (struct event, to));
179
180			event_del (ev);
181
182	root	1.37	ev_x_cb (ev, revents);
183	root	1.1	}
184
185			void event_set (struct event ev, int fd, short events, void (cb)(int, short, void ), void arg)
186			{
187	root	1.14	if (events & EV_SIGNAL)
188	root	1.37	ev_init (&ev->iosig.sig, ev_x_cb_sig);
189	root	1.14	else
190	root	1.37	ev_init (&ev->iosig.io, ev_x_cb_io);
191	root	1.4
192	root	1.37	ev_init (&ev->to, ev_x_cb_to);
193	root	1.1
194	root	1.37	ev->ev_base = ev_x_cur; /* not threadsafe, but it's how libevent works */
195	root	1.1	ev->ev_fd = fd;
196			ev->ev_events = events;
197			ev->ev_pri = 0;
198			ev->ev_callback = cb;
199			ev->ev_arg = arg;
200			ev->ev_res = 0;
201	root	1.27	ev->ev_flags = EVLIST_INIT;
202	root	1.1	}
203
204			int event_once (int fd, short events, void (cb)(int, short, void ), void arg, struct timeval tv)
205			{
206	root	1.37	return event_base_once (ev_x_cur, fd, events, cb, arg, tv);
207	root	1.1	}
208
209			int event_add (struct event ev, struct timeval tv)
210			{
211	root	1.7	dLOOPev;
212
213	root	1.4	if (ev->ev_events & EV_SIGNAL)
214	root	1.1	{
215	root	1.31	if (!ev_is_active (&ev->iosig.sig))
216			{
217			ev_signal_set (&ev->iosig.sig, ev->ev_fd);
218			ev_signal_start (EV_A_ &ev->iosig.sig);
219	root	1.27
220	root	1.31	ev->ev_flags \|= EVLIST_SIGNAL;
221			}
222	root	1.1	}
223	root	1.4	else if (ev->ev_events & (EV_READ \| EV_WRITE))
224	root	1.1	{
225	root	1.31	if (!ev_is_active (&ev->iosig.io))
226			{
227			ev_io_set (&ev->iosig.io, ev->ev_fd, ev->ev_events & (EV_READ \| EV_WRITE));
228			ev_io_start (EV_A_ &ev->iosig.io);
229	root	1.27
230	root	1.31	ev->ev_flags \|= EVLIST_INSERTED;
231			}
232	root	1.1	}
233
234	root	1.4	if (tv)
235	root	1.1	{
236	root	1.37	ev->to.repeat = ev_tv_get (tv);
237	root	1.31	ev_timer_again (EV_A_ &ev->to);
238	root	1.27	ev->ev_flags \|= EVLIST_TIMEOUT;
239	root	1.1	}
240	root	1.31	else
241	root	1.32	{
242	root	1.31	ev_timer_stop (EV_A_ &ev->to);
243	root	1.32	ev->ev_flags &= ~EVLIST_TIMEOUT;
244			}
245	root	1.1
246	root	1.27	ev->ev_flags \|= EVLIST_ACTIVE;
247
248	root	1.1	return 0;
249			}
250
251			int event_del (struct event *ev)
252			{
253	root	1.7	dLOOPev;
254
255	root	1.4	if (ev->ev_events & EV_SIGNAL)
256	root	1.32	ev_signal_stop (EV_A_ &ev->iosig.sig);
257	root	1.16	else if (ev->ev_events & (EV_READ \| EV_WRITE))
258	root	1.32	ev_io_stop (EV_A_ &ev->iosig.io);
259	root	1.1
260			if (ev_is_active (&ev->to))
261	root	1.7	ev_timer_stop (EV_A_ &ev->to);
262	root	1.1
263	root	1.27	ev->ev_flags = EVLIST_INIT;
264
265	root	1.1	return 0;
266			}
267
268	root	1.21	void event_active (struct event *ev, int res, short ncalls)
269			{
270	root	1.23	dLOOPev;
271
272	root	1.21	if (res & EV_TIMEOUT)
273	root	1.23	ev_feed_event (EV_A_ &ev->to, res & EV_TIMEOUT);
274	root	1.21
275			if (res & EV_SIGNAL)
276	root	1.23	ev_feed_event (EV_A_ &ev->iosig.sig, res & EV_SIGNAL);
277	root	1.21
278			if (res & (EV_READ \| EV_WRITE))
279	root	1.23	ev_feed_event (EV_A_ &ev->iosig.io, res & (EV_READ \| EV_WRITE));
280	root	1.21	}
281
282	root	1.1	int event_pending (struct event ev, short events, struct timeval tv)
283			{
284	root	1.18	short revents = 0;
285	root	1.7	dLOOPev;
286
287	root	1.4	if (ev->ev_events & EV_SIGNAL)
288			{
289			/* sig */
290	root	1.14	if (ev_is_active (&ev->iosig.sig) \|\| ev_is_pending (&ev->iosig.sig))
291	root	1.4	revents \|= EV_SIGNAL;
292			}
293	root	1.16	else if (ev->ev_events & (EV_READ \| EV_WRITE))
294	root	1.4	{
295			/* io */
296	root	1.14	if (ev_is_active (&ev->iosig.io) \|\| ev_is_pending (&ev->iosig.io))
297	root	1.4	revents \|= ev->ev_events & (EV_READ \| EV_WRITE);
298			}
299	root	1.1
300	root	1.14	if (ev->ev_events & EV_TIMEOUT \|\| ev_is_active (&ev->to) \|\| ev_is_pending (&ev->to))
301	root	1.1	{
302			revents \|= EV_TIMEOUT;
303
304			if (tv)
305	root	1.37	ev_tv_set (tv, ev_now (EV_A)); /* not sure if this is right :) */
306	root	1.1	}
307
308			return events & revents;
309			}
310
311			int event_priority_init (int npri)
312			{
313	root	1.37	return event_base_priority_init (ev_x_cur, npri);
314	root	1.1	}
315
316			int event_priority_set (struct event *ev, int pri)
317			{
318			ev->ev_pri = pri;
319
320			return 0;
321			}
322
323			int event_base_set (struct event_base base, struct event ev)
324			{
325			ev->ev_base = base;
326
327			return 0;
328			}
329
330			int event_base_loop (struct event_base *base, int flags)
331			{
332	root	1.7	dLOOPbase;
333	root	1.8
334			ev_loop (EV_A_ flags);
335	root	1.1
336			return 0;
337			}
338
339			int event_base_dispatch (struct event_base *base)
340			{
341			return event_base_loop (base, 0);
342			}
343
344			static void
345	root	1.37	ev_x_loopexit_cb (int revents, void *base)
346	root	1.1	{
347	root	1.9	dLOOPbase;
348
349	root	1.30	ev_unloop (EV_A_ EVUNLOOP_ONE);
350	root	1.1	}
351
352			int event_base_loopexit (struct event_base base, struct timeval tv)
353			{
354	root	1.37	ev_tstamp after = ev_tv_get (tv);
355	root	1.7	dLOOPbase;
356	root	1.1
357	root	1.37	ev_once (EV_A_ -1, 0, after >= 0. ? after : 0., ev_x_loopexit_cb, (void *)base);
358	root	1.5
359	root	1.34	return 0;
360	root	1.1	}
361
362	root	1.37	struct ev_x_once
363	root	1.1	{
364			int fd;
365			void (cb)(int, short, void );
366			void *arg;
367			};
368
369			static void
370	root	1.37	ev_x_once_cb (int revents, void *arg)
371	root	1.1	{
372	root	1.37	struct ev_x_once once = (struct ev_x_once )arg;
373	root	1.1
374	root	1.26	once->cb (once->fd, (short)revents, once->arg);
375	root	1.1	free (once);
376			}
377
378			int event_base_once (struct event_base base, int fd, short events, void (cb)(int, short, void ), void arg, struct timeval *tv)
379			{
380	root	1.37	struct ev_x_once once = (struct ev_x_once )malloc (sizeof (struct ev_x_once));
381	root	1.7	dLOOPbase;
382	root	1.1
383			if (!once)
384			return -1;
385
386			once->fd = fd;
387			once->cb = cb;
388			once->arg = arg;
389
390	root	1.37	ev_once (EV_A_ fd, events & (EV_READ \| EV_WRITE), ev_tv_get (tv), ev_x_once_cb, (void *)once);
391	root	1.1
392			return 0;
393			}
394
395			int event_base_priority_init (struct event_base *base, int npri)
396			{
397	root	1.13	/dLOOPbase;/
398	root	1.7
399	root	1.1	return 0;
400			}
401