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Comparing libev/event.c (file contents):
Revision 1.9 by root, Sun Nov 4 00:24:17 2007 UTC vs.
Revision 1.34 by root, Wed Apr 9 21:09:10 2008 UTC

… …
2 * libevent compatibility layer 2 * libevent compatibility layer
3 * 3 *
4 * Copyright (c) 2007 Marc Alexander Lehmann <libev@schmorp.de> 4 * Copyright (c) 2007 Marc Alexander Lehmann <libev@schmorp.de>
5 * All rights reserved. 5 * All rights reserved.
6 * 6 *
7 * Redistribution and use in source and binary forms, with or without 7 * Redistribution and use in source and binary forms, with or without modifica-
8 * modification, are permitted provided that the following conditions are 8 * tion, are permitted provided that the following conditions are met:
9 * 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.
10 * 27 *
11 * * Redistributions of source code must retain the above copyright 28 * Alternatively, the contents of this file may be used under the terms of
12 * notice, this list of conditions and the following disclaimer. 29 * the GNU General Public License ("GPL") version 2 or any later version,
13 * 30 * in which case the provisions of the GPL are applicable instead of
14 * * Redistributions in binary form must reproduce the above 31 * the above. If you wish to allow the use of your version of this file
15 * copyright notice, this list of conditions and the following 32 * only under the terms of the GPL and not to allow others to use your
16 * disclaimer in the documentation and/or other materials provided 33 * version of this file under the BSD license, indicate your decision
17 * with the distribution. 34 * by deleting the provisions above and replace them with the notice
18 * 35 * and other provisions required by the GPL. If you do not delete the
19 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS 36 * provisions above, a recipient may use your version of this file under
20 * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT 37 * either the BSD or the GPL.
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 */ 38 */
31 39
32#include <stddef.h> 40#include <stddef.h>
33#include <stdlib.h> 41#include <stdlib.h>
42#include <assert.h>
43
44#ifndef WIN32
34#include <sys/time.h> 45# include <sys/time.h>
46#endif
35 47
48#ifdef EV_EVENT_H
49# include EV_EVENT_H
50#else
36#include "event.h" 51# include "event.h"
52#endif
37 53
38#if EV_MULTIPLICITY 54#if EV_MULTIPLICITY
39# define dLOOPev struct ev_loop *loop = (struct ev_loop *)ev->ev_base 55# define dLOOPev struct ev_loop *loop = (struct ev_loop *)ev->ev_base
40# define dLOOPbase struct ev_loop *loop = (struct ev_loop *)base 56# define dLOOPbase struct ev_loop *loop = (struct ev_loop *)base
41#else 57#else
… …
47struct event_base 63struct event_base
48{ 64{
49 int dummy; 65 int dummy;
50}; 66};
51 67
52static struct event_base x_base, *x_cur; 68static struct event_base *x_cur;
53 69
54static void 70static void
55tv_set (struct timeval *tv, ev_tstamp at) 71tv_set (struct timeval *tv, ev_tstamp at)
56{ 72{
57 tv->tv_sec = (long)at; 73 tv->tv_sec = (long)at;
… …
80} 96}
81 97
82void *event_init (void) 98void *event_init (void)
83{ 99{
84#if EV_MULTIPLICITY 100#if EV_MULTIPLICITY
101 if (x_cur)
85 x_cur = (struct event_base *)ev_loop_new (EVMETHOD_AUTO); 102 x_cur = (struct event_base *)ev_loop_new (EVFLAG_AUTO);
103 else
104 x_cur = (struct event_base *)ev_default_loop (EVFLAG_AUTO);
86#else 105#else
87 x_cur = &x_base; 106 assert (("multiple event bases not supported when not compiled with EV_MULTIPLICITY", !x_cur));
107
108 x_cur = (struct event_base *)(long)ev_default_loop (EVFLAG_AUTO);
88#endif 109#endif
89 110
90 return x_cur; 111 return x_cur;
91} 112}
92 113
93void event_base_free (struct event_base *base) 114void event_base_free (struct event_base *base)
94{ 115{
95 dLOOPbase; 116 dLOOPbase;
96 117
97#if EV_MULTIPLICITY 118#if EV_MULTIPLICITY
119 if (ev_default_loop (EVFLAG_AUTO) != loop)
98 ev_loop_delete (loop); 120 ev_loop_destroy (loop);
99#endif 121#endif
100} 122}
101 123
102int event_dispatch (void) 124int event_dispatch (void)
103{ 125{
… …
125x_cb (struct event *ev, int revents) 147x_cb (struct event *ev, int revents)
126{ 148{
127 revents &= EV_READ | EV_WRITE | EV_TIMEOUT | EV_SIGNAL; 149 revents &= EV_READ | EV_WRITE | EV_TIMEOUT | EV_SIGNAL;
128 150
129 ev->ev_res = revents; 151 ev->ev_res = revents;
130 ev->ev_callback (ev->ev_fd, revents, ev->ev_arg); 152 ev->ev_callback (ev->ev_fd, (short)revents, ev->ev_arg);
131} 153}
132 154
133static void 155static void
134x_cb_sig (EV_P_ struct ev_signal *w, int revents) 156x_cb_sig (EV_P_ struct ev_signal *w, int revents)
135{ 157{
136 x_cb ((struct event *)(((char *)w) - offsetof (struct event, iosig.sig)), revents); 158 struct event *ev = (struct event *)(((char *)w) - offsetof (struct event, iosig.sig));
159
160 if (revents & EV_ERROR)
161 event_del (ev);
162
163 x_cb (ev, revents);
137} 164}
138 165
139static void 166static void
140x_cb_io (EV_P_ struct ev_io *w, int revents) 167x_cb_io (EV_P_ struct ev_io *w, int revents)
141{ 168{
142 struct event *ev = (struct event *)(((char *)w) - offsetof (struct event, iosig.io)); 169 struct event *ev = (struct event *)(((char *)w) - offsetof (struct event, iosig.io));
143 170
144 if (!(ev->ev_events & EV_PERSIST) && ev_is_active (w)) 171 if ((revents & EV_ERROR) || !(ev->ev_events & EV_PERSIST))
145 ev_io_stop (EV_A_ w); 172 event_del (ev);
146 173
147 x_cb (ev, revents); 174 x_cb (ev, revents);
148} 175}
149 176
150static void 177static void
151x_cb_to (EV_P_ struct ev_timer *w, int revents) 178x_cb_to (EV_P_ struct ev_timer *w, int revents)
152{ 179{
153 x_cb ((struct event *)(((char *)w) - offsetof (struct event, to)), revents); 180 struct event *ev = (struct event *)(((char *)w) - offsetof (struct event, to));
181
182 event_del (ev);
183
184 x_cb (ev, revents);
154} 185}
155 186
156void event_set (struct event *ev, int fd, short events, void (*cb)(int, short, void *), void *arg) 187void event_set (struct event *ev, int fd, short events, void (*cb)(int, short, void *), void *arg)
157{ 188{
158 if (!ev->initialised)
159 {
160 ev->initialised = 1;
161
162 if (events & EV_SIGNAL) 189 if (events & EV_SIGNAL)
163 ev_watcher_init (&ev->iosig.sig, x_cb_sig); 190 ev_init (&ev->iosig.sig, x_cb_sig);
164 else 191 else
165 ev_watcher_init (&ev->iosig.io, x_cb_io); 192 ev_init (&ev->iosig.io, x_cb_io);
166 193
167 ev_watcher_init (&ev->to, x_cb_to); 194 ev_init (&ev->to, x_cb_to);
168 }
169 195
170 ev->ev_base = x_cur; /* not threadsafe, but its like libevent works */ 196 ev->ev_base = x_cur; /* not threadsafe, but its like libevent works */
171 ev->ev_fd = fd; 197 ev->ev_fd = fd;
172 ev->ev_events = events; 198 ev->ev_events = events;
173 ev->ev_pri = 0; 199 ev->ev_pri = 0;
174 ev->ev_callback = cb; 200 ev->ev_callback = cb;
175 ev->ev_arg = arg; 201 ev->ev_arg = arg;
176 ev->ev_res = 0; 202 ev->ev_res = 0;
203 ev->ev_flags = EVLIST_INIT;
177} 204}
178 205
179int event_once (int fd, short events, void (*cb)(int, short, void *), void *arg, struct timeval *tv) 206int event_once (int fd, short events, void (*cb)(int, short, void *), void *arg, struct timeval *tv)
180{ 207{
181 return event_base_once (x_cur, fd, events, cb, arg, tv); 208 return event_base_once (x_cur, fd, events, cb, arg, tv);
… …
183 210
184int event_add (struct event *ev, struct timeval *tv) 211int event_add (struct event *ev, struct timeval *tv)
185{ 212{
186 dLOOPev; 213 dLOOPev;
187 214
188 /* disable all watchers */
189 event_del (ev);
190
191 if (ev->ev_events & EV_SIGNAL) 215 if (ev->ev_events & EV_SIGNAL)
192 { 216 {
217 if (!ev_is_active (&ev->iosig.sig))
218 {
193 ev_signal_set (&ev->iosig.sig, ev->ev_fd); 219 ev_signal_set (&ev->iosig.sig, ev->ev_fd);
194 ev_signal_start (EV_A_ &ev->iosig.sig); 220 ev_signal_start (EV_A_ &ev->iosig.sig);
221
222 ev->ev_flags |= EVLIST_SIGNAL;
223 }
195 } 224 }
196 else if (ev->ev_events & (EV_READ | EV_WRITE)) 225 else if (ev->ev_events & (EV_READ | EV_WRITE))
197 { 226 {
227 if (!ev_is_active (&ev->iosig.io))
228 {
198 ev_io_set (&ev->iosig.io, ev->ev_fd, ev->ev_events & (EV_READ | EV_WRITE)); 229 ev_io_set (&ev->iosig.io, ev->ev_fd, ev->ev_events & (EV_READ | EV_WRITE));
199 ev_io_start (EV_A_ &ev->iosig.io); 230 ev_io_start (EV_A_ &ev->iosig.io);
231
232 ev->ev_flags |= EVLIST_INSERTED;
233 }
200 } 234 }
201 235
202 if (tv) 236 if (tv)
203 { 237 {
204 ev_timer_set (&ev->to, tv_get (tv), 0.); 238 ev->to.repeat = tv_get (tv);
239 ev_timer_again (EV_A_ &ev->to);
240 ev->ev_flags |= EVLIST_TIMEOUT;
241 }
242 else
243 {
205 ev_timer_start (EV_A_ &ev->to); 244 ev_timer_stop (EV_A_ &ev->to);
245 ev->ev_flags &= ~EVLIST_TIMEOUT;
206 } 246 }
247
248 ev->ev_flags |= EVLIST_ACTIVE;
207 249
208 return 0; 250 return 0;
209} 251}
210 252
211int event_del (struct event *ev) 253int event_del (struct event *ev)
212{ 254{
213 dLOOPev; 255 dLOOPev;
214 256
215 if (ev->ev_events & EV_SIGNAL) 257 if (ev->ev_events & EV_SIGNAL)
216 {
217 /* sig */
218 if (ev_is_active (&ev->iosig.sig))
219 ev_signal_stop (EV_A_ &ev->iosig.sig); 258 ev_signal_stop (EV_A_ &ev->iosig.sig);
220 } 259 else if (ev->ev_events & (EV_READ | EV_WRITE))
221 else
222 {
223 /* io */
224 if (ev_is_active (&ev->iosig.io))
225 ev_io_stop (EV_A_ &ev->iosig.io); 260 ev_io_stop (EV_A_ &ev->iosig.io);
226 }
227 261
228 if (ev_is_active (&ev->to)) 262 if (ev_is_active (&ev->to))
229 ev_timer_stop (EV_A_ &ev->to); 263 ev_timer_stop (EV_A_ &ev->to);
230 264
265 ev->ev_flags = EVLIST_INIT;
266
231 return 0; 267 return 0;
268}
269
270void event_active (struct event *ev, int res, short ncalls)
271{
272 dLOOPev;
273
274 if (res & EV_TIMEOUT)
275 ev_feed_event (EV_A_ &ev->to, res & EV_TIMEOUT);
276
277 if (res & EV_SIGNAL)
278 ev_feed_event (EV_A_ &ev->iosig.sig, res & EV_SIGNAL);
279
280 if (res & (EV_READ | EV_WRITE))
281 ev_feed_event (EV_A_ &ev->iosig.io, res & (EV_READ | EV_WRITE));
232} 282}
233 283
234int event_pending (struct event *ev, short events, struct timeval *tv) 284int event_pending (struct event *ev, short events, struct timeval *tv)
235{ 285{
286 short revents = 0;
236 dLOOPev; 287 dLOOPev;
237 288
238 short revents = 0;
239 289
240 if (ev->ev_events & EV_SIGNAL) 290 if (ev->ev_events & EV_SIGNAL)
241 { 291 {
242 /* sig */ 292 /* sig */
243 if (ev->iosig.sig.pending) 293 if (ev_is_active (&ev->iosig.sig) || ev_is_pending (&ev->iosig.sig))
244 revents |= EV_SIGNAL; 294 revents |= EV_SIGNAL;
245 } 295 }
246 else 296 else if (ev->ev_events & (EV_READ | EV_WRITE))
247 { 297 {
248 /* io */ 298 /* io */
249 if (ev->iosig.io.pending) 299 if (ev_is_active (&ev->iosig.io) || ev_is_pending (&ev->iosig.io))
250 revents |= ev->ev_events & (EV_READ | EV_WRITE); 300 revents |= ev->ev_events & (EV_READ | EV_WRITE);
251 } 301 }
252 302
253 if (ev->to.pending) 303 if (ev->ev_events & EV_TIMEOUT || ev_is_active (&ev->to) || ev_is_pending (&ev->to))
254 { 304 {
255 revents |= EV_TIMEOUT; 305 revents |= EV_TIMEOUT;
256 306
257 if (tv) 307 if (tv)
258 tv_set (tv, ev_now (EV_A)); /* not sure if this is right :) */ 308 tv_set (tv, ev_now (EV_A)); /* not sure if this is right :) */
… …
297static void 347static void
298x_loopexit_cb (int revents, void *base) 348x_loopexit_cb (int revents, void *base)
299{ 349{
300 dLOOPbase; 350 dLOOPbase;
301 351
302 ev_unloop (EV_A_ EVUNLOOP_ONCE); 352 ev_unloop (EV_A_ EVUNLOOP_ONE);
303} 353}
304 354
305int event_base_loopexit (struct event_base *base, struct timeval *tv) 355int event_base_loopexit (struct event_base *base, struct timeval *tv)
306{ 356{
357 ev_tstamp after = tv_get (tv);
307 dLOOPbase; 358 dLOOPbase;
308 ev_tstamp after = tv_get (tv);
309 359
310 ev_once (EV_A_ -1, 0, after >= 0. ? after : 0., x_loopexit_cb, (void *)base); 360 ev_once (EV_A_ -1, 0, after >= 0. ? after : 0., x_loopexit_cb, (void *)base);
311 361
312 return -1; 362 return 0;
313} 363}
314 364
315struct x_once 365struct x_once
316{ 366{
317 int fd; 367 int fd;
… …
320}; 370};
321 371
322static void 372static void
323x_once_cb (int revents, void *arg) 373x_once_cb (int revents, void *arg)
324{ 374{
325 struct x_once *once = arg; 375 struct x_once *once = (struct x_once *)arg;
326 376
327 once->cb (once->fd, revents, once->arg); 377 once->cb (once->fd, (short)revents, once->arg);
328 free (once); 378 free (once);
329} 379}
330 380
331int event_base_once (struct event_base *base, int fd, short events, void (*cb)(int, short, void *), void *arg, struct timeval *tv) 381int event_base_once (struct event_base *base, int fd, short events, void (*cb)(int, short, void *), void *arg, struct timeval *tv)
332{ 382{
383 struct x_once *once = (struct x_once *)malloc (sizeof (struct x_once));
333 dLOOPbase; 384 dLOOPbase;
334 struct x_once *once = malloc (sizeof (struct x_once));
335 385
336 if (!once) 386 if (!once)
337 return -1; 387 return -1;
338 388
339 once->fd = fd; 389 once->fd = fd;
… …
345 return 0; 395 return 0;
346} 396}
347 397
348int event_base_priority_init (struct event_base *base, int npri) 398int event_base_priority_init (struct event_base *base, int npri)
349{ 399{
350 dLOOPbase; 400 /*dLOOPbase;*/
351 401
352 return 0; 402 return 0;
353} 403}
354 404

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