libev/event.c

/*
 * libevent compatibility layer
 *
 * Copyright (c) 2007,2008,2009 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)
    {
      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;
}

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:	1.42
Committed:	Mon May 10 20:01:45 2010 UTC (14 years ago) by root
Content type:	text/plain
Branch:	MAIN
Changes since 1.41:	+4 -1 lines
Log Message:	* empty log message *
#	User	Rev	Content
1	root	1.1	/*
2			* libevent compatibility layer
3			*
4	root	1.41	* Copyright (c) 2007,2008,2009 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	root	1.42	{
78			ev_tstamp after = tv->tv_sec + tv->tv_usec * 1e-6;
79			return after ? after : 1e-6;
80			}
81	root	1.1	else
82			return -1.;
83			}
84
85	root	1.40	#define EVENT_STRINGIFY(s) # s
86			#define EVENT_VERSION(a,b) EVENT_STRINGIFY (a) "." EVENT_STRINGIFY (b)
87	root	1.1
88			const char *event_get_version (void)
89			{
90	root	1.40	/* returns ABI, not API or library, version */
91	root	1.1	return EVENT_VERSION (EV_VERSION_MAJOR, EV_VERSION_MINOR);
92			}
93
94			const char *event_get_method (void)
95			{
96			return "libev";
97			}
98
99			void *event_init (void)
100			{
101	root	1.9	#if EV_MULTIPLICITY
102	root	1.37	if (ev_x_cur)
103			ev_x_cur = (struct event_base *)ev_loop_new (EVFLAG_AUTO);
104	root	1.10	else
105	root	1.37	ev_x_cur = (struct event_base *)ev_default_loop (EVFLAG_AUTO);
106	root	1.9	#else
107	root	1.39	assert (("libev: multiple event bases not supported when not compiled with EV_MULTIPLICITY", !ev_x_cur));
108	root	1.10
109	root	1.37	ev_x_cur = (struct event_base *)(long)ev_default_loop (EVFLAG_AUTO);
110	root	1.9	#endif
111	root	1.1
112	root	1.37	return ev_x_cur;
113	root	1.1	}
114
115			void event_base_free (struct event_base *base)
116			{
117	root	1.8	dLOOPbase;
118
119	root	1.9	#if EV_MULTIPLICITY
120	root	1.29	if (ev_default_loop (EVFLAG_AUTO) != loop)
121	root	1.13	ev_loop_destroy (loop);
122	root	1.9	#endif
123	root	1.1	}
124
125			int event_dispatch (void)
126			{
127	root	1.37	return event_base_dispatch (ev_x_cur);
128	root	1.1	}
129
130	root	1.12	#ifdef EV_STANDALONE
131	root	1.1	void event_set_log_callback (event_log_cb cb)
132			{
133			/* nop */
134			}
135	root	1.5	#endif
136	root	1.1
137			int event_loop (int flags)
138			{
139	root	1.37	return event_base_loop (ev_x_cur, flags);
140	root	1.1	}
141
142			int event_loopexit (struct timeval *tv)
143			{
144	root	1.37	return event_base_loopexit (ev_x_cur, tv);
145	root	1.1	}
146
147			static void
148	root	1.37	ev_x_cb (struct event *ev, int revents)
149	root	1.1	{
150			revents &= EV_READ \| EV_WRITE \| EV_TIMEOUT \| EV_SIGNAL;
151
152			ev->ev_res = revents;
153	root	1.26	ev->ev_callback (ev->ev_fd, (short)revents, ev->ev_arg);
154	root	1.1	}
155
156			static void
157	root	1.37	ev_x_cb_sig (EV_P_ struct ev_signal *w, int revents)
158	root	1.1	{
159	root	1.20	struct event ev = (struct event )(((char *)w) - offsetof (struct event, iosig.sig));
160
161			if (revents & EV_ERROR)
162			event_del (ev);
163
164	root	1.37	ev_x_cb (ev, revents);
165	root	1.1	}
166
167			static void
168	root	1.37	ev_x_cb_io (EV_P_ struct ev_io *w, int revents)
169	root	1.1	{
170	root	1.7	struct event ev = (struct event )(((char *)w) - offsetof (struct event, iosig.io));
171
172	root	1.32	if ((revents & EV_ERROR) \|\| !(ev->ev_events & EV_PERSIST))
173	root	1.20	event_del (ev);
174	root	1.7
175	root	1.37	ev_x_cb (ev, revents);
176	root	1.1	}
177
178			static void
179	root	1.37	ev_x_cb_to (EV_P_ struct ev_timer *w, int revents)
180	root	1.1	{
181	root	1.14	struct event ev = (struct event )(((char *)w) - offsetof (struct event, to));
182
183			event_del (ev);
184
185	root	1.37	ev_x_cb (ev, revents);
186	root	1.1	}
187
188			void event_set (struct event ev, int fd, short events, void (cb)(int, short, void ), void arg)
189			{
190	root	1.14	if (events & EV_SIGNAL)
191	root	1.37	ev_init (&ev->iosig.sig, ev_x_cb_sig);
192	root	1.14	else
193	root	1.37	ev_init (&ev->iosig.io, ev_x_cb_io);
194	root	1.4
195	root	1.37	ev_init (&ev->to, ev_x_cb_to);
196	root	1.1
197	root	1.37	ev->ev_base = ev_x_cur; /* not threadsafe, but it's how libevent works */
198	root	1.1	ev->ev_fd = fd;
199			ev->ev_events = events;
200			ev->ev_pri = 0;
201			ev->ev_callback = cb;
202			ev->ev_arg = arg;
203			ev->ev_res = 0;
204	root	1.27	ev->ev_flags = EVLIST_INIT;
205	root	1.1	}
206
207			int event_once (int fd, short events, void (cb)(int, short, void ), void arg, struct timeval tv)
208			{
209	root	1.37	return event_base_once (ev_x_cur, fd, events, cb, arg, tv);
210	root	1.1	}
211
212			int event_add (struct event ev, struct timeval tv)
213			{
214	root	1.7	dLOOPev;
215
216	root	1.4	if (ev->ev_events & EV_SIGNAL)
217	root	1.1	{
218	root	1.31	if (!ev_is_active (&ev->iosig.sig))
219			{
220			ev_signal_set (&ev->iosig.sig, ev->ev_fd);
221			ev_signal_start (EV_A_ &ev->iosig.sig);
222	root	1.27
223	root	1.31	ev->ev_flags \|= EVLIST_SIGNAL;
224			}
225	root	1.1	}
226	root	1.4	else if (ev->ev_events & (EV_READ \| EV_WRITE))
227	root	1.1	{
228	root	1.31	if (!ev_is_active (&ev->iosig.io))
229			{
230			ev_io_set (&ev->iosig.io, ev->ev_fd, ev->ev_events & (EV_READ \| EV_WRITE));
231			ev_io_start (EV_A_ &ev->iosig.io);
232	root	1.27
233	root	1.31	ev->ev_flags \|= EVLIST_INSERTED;
234			}
235	root	1.1	}
236
237	root	1.4	if (tv)
238	root	1.1	{
239	root	1.37	ev->to.repeat = ev_tv_get (tv);
240	root	1.31	ev_timer_again (EV_A_ &ev->to);
241	root	1.27	ev->ev_flags \|= EVLIST_TIMEOUT;
242	root	1.1	}
243	root	1.31	else
244	root	1.32	{
245	root	1.31	ev_timer_stop (EV_A_ &ev->to);
246	root	1.32	ev->ev_flags &= ~EVLIST_TIMEOUT;
247			}
248	root	1.1
249	root	1.27	ev->ev_flags \|= EVLIST_ACTIVE;
250
251	root	1.1	return 0;
252			}
253
254			int event_del (struct event *ev)
255			{
256	root	1.7	dLOOPev;
257
258	root	1.4	if (ev->ev_events & EV_SIGNAL)
259	root	1.32	ev_signal_stop (EV_A_ &ev->iosig.sig);
260	root	1.16	else if (ev->ev_events & (EV_READ \| EV_WRITE))
261	root	1.32	ev_io_stop (EV_A_ &ev->iosig.io);
262	root	1.1
263			if (ev_is_active (&ev->to))
264	root	1.7	ev_timer_stop (EV_A_ &ev->to);
265	root	1.1
266	root	1.27	ev->ev_flags = EVLIST_INIT;
267
268	root	1.1	return 0;
269			}
270
271	root	1.21	void event_active (struct event *ev, int res, short ncalls)
272			{
273	root	1.23	dLOOPev;
274
275	root	1.21	if (res & EV_TIMEOUT)
276	root	1.23	ev_feed_event (EV_A_ &ev->to, res & EV_TIMEOUT);
277	root	1.21
278			if (res & EV_SIGNAL)
279	root	1.23	ev_feed_event (EV_A_ &ev->iosig.sig, res & EV_SIGNAL);
280	root	1.21
281			if (res & (EV_READ \| EV_WRITE))
282	root	1.23	ev_feed_event (EV_A_ &ev->iosig.io, res & (EV_READ \| EV_WRITE));
283	root	1.21	}
284
285	root	1.1	int event_pending (struct event ev, short events, struct timeval tv)
286			{
287	root	1.18	short revents = 0;
288	root	1.7	dLOOPev;
289
290	root	1.4	if (ev->ev_events & EV_SIGNAL)
291			{
292			/* sig */
293	root	1.14	if (ev_is_active (&ev->iosig.sig) \|\| ev_is_pending (&ev->iosig.sig))
294	root	1.4	revents \|= EV_SIGNAL;
295			}
296	root	1.16	else if (ev->ev_events & (EV_READ \| EV_WRITE))
297	root	1.4	{
298			/* io */
299	root	1.14	if (ev_is_active (&ev->iosig.io) \|\| ev_is_pending (&ev->iosig.io))
300	root	1.4	revents \|= ev->ev_events & (EV_READ \| EV_WRITE);
301			}
302	root	1.1
303	root	1.14	if (ev->ev_events & EV_TIMEOUT \|\| ev_is_active (&ev->to) \|\| ev_is_pending (&ev->to))
304	root	1.1	{
305			revents \|= EV_TIMEOUT;
306
307			if (tv)
308	root	1.37	ev_tv_set (tv, ev_now (EV_A)); /* not sure if this is right :) */
309	root	1.1	}
310
311			return events & revents;
312			}
313
314			int event_priority_init (int npri)
315			{
316	root	1.37	return event_base_priority_init (ev_x_cur, npri);
317	root	1.1	}
318
319			int event_priority_set (struct event *ev, int pri)
320			{
321			ev->ev_pri = pri;
322
323			return 0;
324			}
325
326			int event_base_set (struct event_base base, struct event ev)
327			{
328			ev->ev_base = base;
329
330			return 0;
331			}
332
333			int event_base_loop (struct event_base *base, int flags)
334			{
335	root	1.7	dLOOPbase;
336	root	1.8
337			ev_loop (EV_A_ flags);
338	root	1.1
339			return 0;
340			}
341
342			int event_base_dispatch (struct event_base *base)
343			{
344			return event_base_loop (base, 0);
345			}
346
347			static void
348	root	1.37	ev_x_loopexit_cb (int revents, void *base)
349	root	1.1	{
350	root	1.9	dLOOPbase;
351
352	root	1.30	ev_unloop (EV_A_ EVUNLOOP_ONE);
353	root	1.1	}
354
355			int event_base_loopexit (struct event_base base, struct timeval tv)
356			{
357	root	1.37	ev_tstamp after = ev_tv_get (tv);
358	root	1.7	dLOOPbase;
359	root	1.1
360	root	1.37	ev_once (EV_A_ -1, 0, after >= 0. ? after : 0., ev_x_loopexit_cb, (void *)base);
361	root	1.5
362	root	1.34	return 0;
363	root	1.1	}
364
365	root	1.37	struct ev_x_once
366	root	1.1	{
367			int fd;
368			void (cb)(int, short, void );
369			void *arg;
370			};
371
372			static void
373	root	1.37	ev_x_once_cb (int revents, void *arg)
374	root	1.1	{
375	root	1.37	struct ev_x_once once = (struct ev_x_once )arg;
376	root	1.1
377	root	1.26	once->cb (once->fd, (short)revents, once->arg);
378	root	1.1	free (once);
379			}
380
381			int event_base_once (struct event_base base, int fd, short events, void (cb)(int, short, void ), void arg, struct timeval *tv)
382			{
383	root	1.37	struct ev_x_once once = (struct ev_x_once )malloc (sizeof (struct ev_x_once));
384	root	1.7	dLOOPbase;
385	root	1.1
386			if (!once)
387			return -1;
388
389			once->fd = fd;
390			once->cb = cb;
391			once->arg = arg;
392
393	root	1.37	ev_once (EV_A_ fd, events & (EV_READ \| EV_WRITE), ev_tv_get (tv), ev_x_once_cb, (void *)once);
394	root	1.1
395			return 0;
396			}
397
398			int event_base_priority_init (struct event_base *base, int npri)
399			{
400	root	1.13	/dLOOPbase;/
401	root	1.7
402	root	1.1	return 0;
403			}
404