libev/event.c

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

/* same definition as in ev.c */
#define EV_TV_SET(tv,t) do { tv.tv_sec = (long)t; tv.tv_usec = (long)((t - tv.tv_sec) * 1e6); } while (0)

#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;
}

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_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_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_run (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_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:	1.46
Committed:	Sun Oct 24 17:19:47 2010 UTC (13 years, 6 months ago) by root
Content type:	text/plain
Branch:	MAIN
Changes since 1.45:	+3 -0 lines
Log Message:	* empty log message *
#	User	Rev	Content
1	root	1.1	/*
2			* libevent compatibility layer
3			*
4	root	1.44	* Copyright (c) 2007,2008,2009,2010 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	1.46	/* same definition as in ev.c */
51			#define EV_TV_SET(tv,t) do { tv.tv_sec = (long)t; tv.tv_usec = (long)((t - tv.tv_sec) * 1e6); } while (0)
52
53	root	1.9	#if EV_MULTIPLICITY
54			# define dLOOPev struct ev_loop loop = (struct ev_loop )ev->ev_base
55			# define dLOOPbase struct ev_loop loop = (struct ev_loop )base
56	root	1.8	#else
57			# define dLOOPev
58			# define dLOOPbase
59			#endif
60	root	1.7
61	root	1.9	/* never accessed, will always be cast from/to ev_loop */
62	root	1.1	struct event_base
63			{
64			int dummy;
65			};
66
67	root	1.37	static struct event_base *ev_x_cur;
68	root	1.1
69			static ev_tstamp
70	root	1.37	ev_tv_get (struct timeval *tv)
71	root	1.1	{
72			if (tv)
73	root	1.42	{
74			ev_tstamp after = tv->tv_sec + tv->tv_usec * 1e-6;
75			return after ? after : 1e-6;
76			}
77	root	1.1	else
78			return -1.;
79			}
80
81	root	1.40	#define EVENT_STRINGIFY(s) # s
82			#define EVENT_VERSION(a,b) EVENT_STRINGIFY (a) "." EVENT_STRINGIFY (b)
83	root	1.1
84			const char *event_get_version (void)
85			{
86	root	1.40	/* returns ABI, not API or library, version */
87	root	1.1	return EVENT_VERSION (EV_VERSION_MAJOR, EV_VERSION_MINOR);
88			}
89
90			const char *event_get_method (void)
91			{
92			return "libev";
93			}
94
95			void *event_init (void)
96			{
97	root	1.9	#if EV_MULTIPLICITY
98	root	1.37	if (ev_x_cur)
99			ev_x_cur = (struct event_base *)ev_loop_new (EVFLAG_AUTO);
100	root	1.10	else
101	root	1.37	ev_x_cur = (struct event_base *)ev_default_loop (EVFLAG_AUTO);
102	root	1.9	#else
103	root	1.39	assert (("libev: multiple event bases not supported when not compiled with EV_MULTIPLICITY", !ev_x_cur));
104	root	1.10
105	root	1.37	ev_x_cur = (struct event_base *)(long)ev_default_loop (EVFLAG_AUTO);
106	root	1.9	#endif
107	root	1.1
108	root	1.37	return ev_x_cur;
109	root	1.1	}
110
111			void event_base_free (struct event_base *base)
112			{
113	root	1.8	dLOOPbase;
114
115	root	1.9	#if EV_MULTIPLICITY
116	root	1.29	if (ev_default_loop (EVFLAG_AUTO) != loop)
117	root	1.13	ev_loop_destroy (loop);
118	root	1.9	#endif
119	root	1.1	}
120
121			int event_dispatch (void)
122			{
123	root	1.37	return event_base_dispatch (ev_x_cur);
124	root	1.1	}
125
126	root	1.12	#ifdef EV_STANDALONE
127	root	1.1	void event_set_log_callback (event_log_cb cb)
128			{
129			/* nop */
130			}
131	root	1.5	#endif
132	root	1.1
133			int event_loop (int flags)
134			{
135	root	1.37	return event_base_loop (ev_x_cur, flags);
136	root	1.1	}
137
138			int event_loopexit (struct timeval *tv)
139			{
140	root	1.37	return event_base_loopexit (ev_x_cur, tv);
141	root	1.1	}
142
143			static void
144	root	1.37	ev_x_cb (struct event *ev, int revents)
145	root	1.1	{
146	root	1.45	revents &= EV_READ \| EV_WRITE \| EV_TIMER \| EV_SIGNAL;
147	root	1.1
148			ev->ev_res = revents;
149	root	1.26	ev->ev_callback (ev->ev_fd, (short)revents, ev->ev_arg);
150	root	1.1	}
151
152			static void
153	root	1.37	ev_x_cb_sig (EV_P_ struct ev_signal *w, int revents)
154	root	1.1	{
155	root	1.20	struct event ev = (struct event )(((char *)w) - offsetof (struct event, iosig.sig));
156
157			if (revents & EV_ERROR)
158			event_del (ev);
159
160	root	1.37	ev_x_cb (ev, revents);
161	root	1.1	}
162
163			static void
164	root	1.37	ev_x_cb_io (EV_P_ struct ev_io *w, int revents)
165	root	1.1	{
166	root	1.7	struct event ev = (struct event )(((char *)w) - offsetof (struct event, iosig.io));
167
168	root	1.32	if ((revents & EV_ERROR) \|\| !(ev->ev_events & EV_PERSIST))
169	root	1.20	event_del (ev);
170	root	1.7
171	root	1.37	ev_x_cb (ev, revents);
172	root	1.1	}
173
174			static void
175	root	1.37	ev_x_cb_to (EV_P_ struct ev_timer *w, int revents)
176	root	1.1	{
177	root	1.14	struct event ev = (struct event )(((char *)w) - offsetof (struct event, to));
178
179			event_del (ev);
180
181	root	1.37	ev_x_cb (ev, revents);
182	root	1.1	}
183
184			void event_set (struct event ev, int fd, short events, void (cb)(int, short, void ), void arg)
185			{
186	root	1.14	if (events & EV_SIGNAL)
187	root	1.37	ev_init (&ev->iosig.sig, ev_x_cb_sig);
188	root	1.14	else
189	root	1.37	ev_init (&ev->iosig.io, ev_x_cb_io);
190	root	1.4
191	root	1.37	ev_init (&ev->to, ev_x_cb_to);
192	root	1.1
193	root	1.37	ev->ev_base = ev_x_cur; /* not threadsafe, but it's how libevent works */
194	root	1.1	ev->ev_fd = fd;
195			ev->ev_events = events;
196			ev->ev_pri = 0;
197			ev->ev_callback = cb;
198			ev->ev_arg = arg;
199			ev->ev_res = 0;
200	root	1.27	ev->ev_flags = EVLIST_INIT;
201	root	1.1	}
202
203			int event_once (int fd, short events, void (cb)(int, short, void ), void arg, struct timeval tv)
204			{
205	root	1.37	return event_base_once (ev_x_cur, fd, events, cb, arg, tv);
206	root	1.1	}
207
208			int event_add (struct event ev, struct timeval tv)
209			{
210	root	1.7	dLOOPev;
211
212	root	1.4	if (ev->ev_events & EV_SIGNAL)
213	root	1.1	{
214	root	1.31	if (!ev_is_active (&ev->iosig.sig))
215			{
216			ev_signal_set (&ev->iosig.sig, ev->ev_fd);
217			ev_signal_start (EV_A_ &ev->iosig.sig);
218	root	1.27
219	root	1.31	ev->ev_flags \|= EVLIST_SIGNAL;
220			}
221	root	1.1	}
222	root	1.4	else if (ev->ev_events & (EV_READ \| EV_WRITE))
223	root	1.1	{
224	root	1.31	if (!ev_is_active (&ev->iosig.io))
225			{
226			ev_io_set (&ev->iosig.io, ev->ev_fd, ev->ev_events & (EV_READ \| EV_WRITE));
227			ev_io_start (EV_A_ &ev->iosig.io);
228	root	1.27
229	root	1.31	ev->ev_flags \|= EVLIST_INSERTED;
230			}
231	root	1.1	}
232
233	root	1.4	if (tv)
234	root	1.1	{
235	root	1.37	ev->to.repeat = ev_tv_get (tv);
236	root	1.31	ev_timer_again (EV_A_ &ev->to);
237	root	1.27	ev->ev_flags \|= EVLIST_TIMEOUT;
238	root	1.1	}
239	root	1.31	else
240	root	1.32	{
241	root	1.31	ev_timer_stop (EV_A_ &ev->to);
242	root	1.32	ev->ev_flags &= ~EVLIST_TIMEOUT;
243			}
244	root	1.1
245	root	1.27	ev->ev_flags \|= EVLIST_ACTIVE;
246
247	root	1.1	return 0;
248			}
249
250			int event_del (struct event *ev)
251			{
252	root	1.7	dLOOPev;
253
254	root	1.4	if (ev->ev_events & EV_SIGNAL)
255	root	1.32	ev_signal_stop (EV_A_ &ev->iosig.sig);
256	root	1.16	else if (ev->ev_events & (EV_READ \| EV_WRITE))
257	root	1.32	ev_io_stop (EV_A_ &ev->iosig.io);
258	root	1.1
259			if (ev_is_active (&ev->to))
260	root	1.7	ev_timer_stop (EV_A_ &ev->to);
261	root	1.1
262	root	1.27	ev->ev_flags = EVLIST_INIT;
263
264	root	1.1	return 0;
265			}
266
267	root	1.21	void event_active (struct event *ev, int res, short ncalls)
268			{
269	root	1.23	dLOOPev;
270
271	root	1.21	if (res & EV_TIMEOUT)
272	root	1.23	ev_feed_event (EV_A_ &ev->to, res & EV_TIMEOUT);
273	root	1.21
274			if (res & EV_SIGNAL)
275	root	1.23	ev_feed_event (EV_A_ &ev->iosig.sig, res & EV_SIGNAL);
276	root	1.21
277			if (res & (EV_READ \| EV_WRITE))
278	root	1.23	ev_feed_event (EV_A_ &ev->iosig.io, res & (EV_READ \| EV_WRITE));
279	root	1.21	}
280
281	root	1.1	int event_pending (struct event ev, short events, struct timeval tv)
282			{
283	root	1.18	short revents = 0;
284	root	1.7	dLOOPev;
285
286	root	1.4	if (ev->ev_events & EV_SIGNAL)
287			{
288			/* sig */
289	root	1.14	if (ev_is_active (&ev->iosig.sig) \|\| ev_is_pending (&ev->iosig.sig))
290	root	1.4	revents \|= EV_SIGNAL;
291			}
292	root	1.16	else if (ev->ev_events & (EV_READ \| EV_WRITE))
293	root	1.4	{
294			/* io */
295	root	1.14	if (ev_is_active (&ev->iosig.io) \|\| ev_is_pending (&ev->iosig.io))
296	root	1.4	revents \|= ev->ev_events & (EV_READ \| EV_WRITE);
297			}
298	root	1.1
299	root	1.14	if (ev->ev_events & EV_TIMEOUT \|\| ev_is_active (&ev->to) \|\| ev_is_pending (&ev->to))
300	root	1.1	{
301			revents \|= EV_TIMEOUT;
302
303			if (tv)
304	root	1.43	EV_TV_SET (tv, ev_now (EV_A)); /* not sure if this is right :) */
305	root	1.1	}
306
307			return events & revents;
308			}
309
310			int event_priority_init (int npri)
311			{
312	root	1.37	return event_base_priority_init (ev_x_cur, npri);
313	root	1.1	}
314
315			int event_priority_set (struct event *ev, int pri)
316			{
317			ev->ev_pri = pri;
318
319			return 0;
320			}
321
322			int event_base_set (struct event_base base, struct event ev)
323			{
324			ev->ev_base = base;
325
326			return 0;
327			}
328
329			int event_base_loop (struct event_base *base, int flags)
330			{
331	root	1.7	dLOOPbase;
332	root	1.8
333	root	1.45	ev_run (EV_A_ flags);
334	root	1.1
335			return 0;
336			}
337
338			int event_base_dispatch (struct event_base *base)
339			{
340			return event_base_loop (base, 0);
341			}
342
343			static void
344	root	1.37	ev_x_loopexit_cb (int revents, void *base)
345	root	1.1	{
346	root	1.9	dLOOPbase;
347
348	root	1.45	ev_break (EV_A_ EVBREAK_ONE);
349	root	1.1	}
350
351			int event_base_loopexit (struct event_base base, struct timeval tv)
352			{
353	root	1.37	ev_tstamp after = ev_tv_get (tv);
354	root	1.7	dLOOPbase;
355	root	1.1
356	root	1.37	ev_once (EV_A_ -1, 0, after >= 0. ? after : 0., ev_x_loopexit_cb, (void *)base);
357	root	1.5
358	root	1.34	return 0;
359	root	1.1	}
360
361	root	1.37	struct ev_x_once
362	root	1.1	{
363			int fd;
364			void (cb)(int, short, void );
365			void *arg;
366			};
367
368			static void
369	root	1.37	ev_x_once_cb (int revents, void *arg)
370	root	1.1	{
371	root	1.37	struct ev_x_once once = (struct ev_x_once )arg;
372	root	1.1
373	root	1.26	once->cb (once->fd, (short)revents, once->arg);
374	root	1.1	free (once);
375			}
376
377			int event_base_once (struct event_base base, int fd, short events, void (cb)(int, short, void ), void arg, struct timeval *tv)
378			{
379	root	1.37	struct ev_x_once once = (struct ev_x_once )malloc (sizeof (struct ev_x_once));
380	root	1.7	dLOOPbase;
381	root	1.1
382			if (!once)
383			return -1;
384
385			once->fd = fd;
386			once->cb = cb;
387			once->arg = arg;
388
389	root	1.37	ev_once (EV_A_ fd, events & (EV_READ \| EV_WRITE), ev_tv_get (tv), ev_x_once_cb, (void *)once);
390	root	1.1
391			return 0;
392			}
393
394			int event_base_priority_init (struct event_base *base, int npri)
395			{
396	root	1.13	/dLOOPbase;/
397	root	1.7
398	root	1.1	return 0;
399			}
400