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Comparing libev/event.c (file contents):
Revision 1.4 by root, Fri Nov 2 13:08:51 2007 UTC vs.
Revision 1.31 by root, Wed Nov 14 05:30:02 2007 UTC

… …
29 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 29 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
30 */ 30 */
31 31
32#include <stddef.h> 32#include <stddef.h>
33#include <stdlib.h> 33#include <stdlib.h>
34#include <assert.h>
35
36#ifndef WIN32
34#include <sys/time.h> 37# include <sys/time.h>
38#endif
35 39
40#ifdef EV_EVENT_H
41# include EV_EVENT_H
42#else
36#include "event.h" 43# include "event.h"
44#endif
37 45
46#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#else
50# define dLOOPev
51# define dLOOPbase
52#endif
53
54/* never accessed, will always be cast from/to ev_loop */
38struct event_base 55struct event_base
39{ 56{
40 int dummy; 57 int dummy;
41}; 58};
42 59
43static int x_actives;
44
45static struct event_base x_base, *x_cur; 60static struct event_base *x_cur;
46 61
47static void 62static void
48tv_set (struct timeval *tv, ev_tstamp at) 63tv_set (struct timeval *tv, ev_tstamp at)
49{ 64{
50 tv->tv_sec = (long)at; 65 tv->tv_sec = (long)at;
… …
72 return "libev"; 87 return "libev";
73} 88}
74 89
75void *event_init (void) 90void *event_init (void)
76{ 91{
77 if (ev_init (0)) 92#if EV_MULTIPLICITY
78 return x_cur = &x_base; 93 if (x_cur)
94 x_cur = (struct event_base *)ev_loop_new (EVFLAG_AUTO);
95 else
96 x_cur = (struct event_base *)ev_default_loop (EVFLAG_AUTO);
97#else
98 assert (("multiple event bases not supported when not compiled with EV_MULTIPLICITY", !x_cur));
79 99
100 x_cur = (struct event_base *)(long)ev_default_loop (EVFLAG_AUTO);
101#endif
102
80 return 0; 103 return x_cur;
81} 104}
82 105
83void event_base_free (struct event_base *base) 106void event_base_free (struct event_base *base)
84{ 107{
108 dLOOPbase;
109
110#if EV_MULTIPLICITY
111 if (ev_default_loop (EVFLAG_AUTO) != loop)
112 ev_loop_destroy (loop);
113#endif
114}
115
116int event_dispatch (void)
117{
118 return event_base_dispatch (x_cur);
119}
120
121#ifdef EV_STANDALONE
122void event_set_log_callback (event_log_cb cb)
123{
85 /* nop */ 124 /* nop */
86} 125}
87 126#endif
88int event_dispatch (void)
89{
90 return event_base_dispatch (x_cur);
91}
92
93void event_set_log_callback (event_log_cb cb)
94{
95 /* nop */
96}
97 127
98int event_loop (int flags) 128int event_loop (int flags)
99{ 129{
100 return event_base_loop (x_cur, flags); 130 return event_base_loop (x_cur, flags);
101} 131}
102 132
103int event_loopexit (struct timeval *tv) 133int event_loopexit (struct timeval *tv)
104{ 134{
105 event_base_loopexit (x_cur, tv); 135 return event_base_loopexit (x_cur, tv);
106} 136}
107 137
108static void 138static void
109x_cb (struct event *ev, int revents) 139x_cb (struct event *ev, int revents)
110{ 140{
141 revents &= EV_READ | EV_WRITE | EV_TIMEOUT | EV_SIGNAL;
142
143 ev->ev_res = revents;
144 ev->ev_callback (ev->ev_fd, (short)revents, ev->ev_arg);
145}
146
147static void
148x_cb_sig (EV_P_ struct ev_signal *w, int revents)
149{
150 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}
157
158static void
159x_cb_io (EV_P_ struct ev_io *w, int revents)
160{
161 struct event *ev = (struct event *)(((char *)w) - offsetof (struct event, iosig.io));
162
163 if (revents & EV_ERROR)
164 event_del (ev);
165 else if (!(ev->ev_events & EV_PERSIST) && ev_is_active (w))
166 {
167 ev_io_stop (EV_A_ w);
168 ev->ev_flags &= ~EVLIST_INSERTED;
169 }
170
171 x_cb (ev, revents);
172}
173
174static void
175x_cb_to (EV_P_ struct ev_timer *w, int revents)
176{
177 struct event *ev = (struct event *)(((char *)w) - offsetof (struct event, to));
178
179 event_del (ev);
180
181 x_cb (ev, revents);
182}
183
184void event_set (struct event *ev, int fd, short events, void (*cb)(int, short, void *), void *arg)
185{
111 if (ev->ev_events & EV_SIGNAL) 186 if (events & EV_SIGNAL)
112 { 187 ev_init (&ev->iosig.sig, x_cb_sig);
113 /* sig */
114 if (ev_is_active (&ev->iosig.sig))
115 {
116 ev_signal_stop (&ev->iosig.sig);
117 --x_actives;
118 }
119 }
120 else 188 else
121 {
122 /* io */
123 if (!(ev->ev_events & EV_PERSIST) && ev_is_active (&ev->iosig.io))
124 {
125 ev_io_stop (&ev->iosig.io);
126 --x_actives;
127 }
128 }
129
130 revents &= EV_READ | EV_WRITE | EV_TIMEOUT | EV_SIGNAL;
131
132 if (revents & EV_TIMEOUT)
133 --x_actives;
134
135 ev->ev_res = revents;
136 ev->ev_callback (ev->ev_fd, revents, ev->ev_arg);
137}
138
139static void
140x_cb_io (struct ev_io *w, int revents)
141{
142 x_cb ((struct event *)(((char *)w) - offsetof (struct event, iosig.io)), revents);
143}
144
145static void
146x_cb_to (struct ev_timer *w, int revents)
147{
148 x_cb ((struct event *)(((char *)w) - offsetof (struct event, to)), revents);
149}
150
151static void
152x_cb_sig (struct ev_signal *w, int revents)
153{
154 x_cb ((struct event *)(((char *)w) - offsetof (struct event, iosig.sig)), revents);
155}
156
157void event_set (struct event *ev, int fd, short events, void (*cb)(int, short, void *), void *arg)
158{
159 if (events & EV_SIGNAL)
160 ev_watcher_init (&ev->iosig.sig, x_cb_sig);
161 else
162 ev_watcher_init (&ev->iosig.io, x_cb_io); 189 ev_init (&ev->iosig.io, x_cb_io);
163 190
164 ev_watcher_init (&ev->to, x_cb_to); 191 ev_init (&ev->to, x_cb_to);
165 192
166 ev->ev_base = x_cur; 193 ev->ev_base = x_cur; /* not threadsafe, but its like libevent works */
167 ev->ev_fd = fd; 194 ev->ev_fd = fd;
168 ev->ev_events = events; 195 ev->ev_events = events;
169 ev->ev_pri = 0; 196 ev->ev_pri = 0;
170 ev->ev_callback = cb; 197 ev->ev_callback = cb;
171 ev->ev_arg = arg; 198 ev->ev_arg = arg;
172 ev->ev_res = 0; 199 ev->ev_res = 0;
200 ev->ev_flags = EVLIST_INIT;
173} 201}
174 202
175int event_once (int fd, short events, void (*cb)(int, short, void *), void *arg, struct timeval *tv) 203int event_once (int fd, short events, void (*cb)(int, short, void *), void *arg, struct timeval *tv)
176{ 204{
177 event_base_once (x_cur, fd, events, cb, arg, tv); 205 return event_base_once (x_cur, fd, events, cb, arg, tv);
178} 206}
179 207
180int event_add (struct event *ev, struct timeval *tv) 208int event_add (struct event *ev, struct timeval *tv)
181{ 209{
182 /* disable all watchers */ 210 dLOOPev;
183 event_del (ev);
184 211
185 if (ev->ev_events & EV_SIGNAL) 212 if (ev->ev_events & EV_SIGNAL)
186 { 213 {
214 if (!ev_is_active (&ev->iosig.sig))
215 {
187 ev_signal_set (&ev->iosig.sig, ev->ev_fd); 216 ev_signal_set (&ev->iosig.sig, ev->ev_fd);
188 ev_signal_start (&ev->iosig.sig); 217 ev_signal_start (EV_A_ &ev->iosig.sig);
189 ++x_actives; 218
219 ev->ev_flags |= EVLIST_SIGNAL;
220 }
190 } 221 }
191 else if (ev->ev_events & (EV_READ | EV_WRITE)) 222 else if (ev->ev_events & (EV_READ | EV_WRITE))
192 { 223 {
224 if (!ev_is_active (&ev->iosig.io))
225 {
193 ev_io_set (&ev->iosig.io, ev->ev_fd, ev->ev_events & (EV_READ | EV_WRITE)); 226 ev_io_set (&ev->iosig.io, ev->ev_fd, ev->ev_events & (EV_READ | EV_WRITE));
194 ev_io_start (&ev->iosig.io); 227 ev_io_start (EV_A_ &ev->iosig.io);
195 ++x_actives; 228
229 ev->ev_flags |= EVLIST_INSERTED;
230 }
196 } 231 }
197 232
198 if (tv) 233 if (tv)
199 { 234 {
200 ev_timer_set (&ev->to, tv_get (tv), 0.); 235 ev->to.repeat = tv_get (tv);
236 ev_timer_again (EV_A_ &ev->to);
237 ev->ev_flags |= EVLIST_TIMEOUT;
238 }
239 else
240 if (ev_is_active (&ev->to))
201 ev_timer_start (&ev->to); 241 ev_timer_stop (EV_A_ &ev->to);
202 ++x_actives; 242
203 } 243 ev->ev_flags |= EVLIST_ACTIVE;
204 244
205 return 0; 245 return 0;
206} 246}
207 247
208int event_del (struct event *ev) 248int event_del (struct event *ev)
209{ 249{
250 dLOOPev;
251
210 if (ev->ev_events & EV_SIGNAL) 252 if (ev->ev_events & EV_SIGNAL)
211 { 253 {
212 /* sig */ 254 /* sig */
213 if (ev_is_active (&ev->iosig.sig)) 255 if (ev_is_active (&ev->iosig.sig))
214 {
215 ev_signal_stop (&ev->iosig.sig); 256 ev_signal_stop (EV_A_ &ev->iosig.sig);
216 --x_actives;
217 }
218 } 257 }
219 else 258 else if (ev->ev_events & (EV_READ | EV_WRITE))
220 { 259 {
221 /* io */ 260 /* io */
222 if (ev_is_active (&ev->iosig.io)) 261 if (ev_is_active (&ev->iosig.io))
223 {
224 ev_io_stop (&ev->iosig.io); 262 ev_io_stop (EV_A_ &ev->iosig.io);
225 --x_actives;
226 }
227 } 263 }
228 264
229 if (ev_is_active (&ev->to)) 265 if (ev_is_active (&ev->to))
230 {
231 ev_timer_stop (&ev->to); 266 ev_timer_stop (EV_A_ &ev->to);
232 --x_actives;
233 }
234 267
268 ev->ev_flags = EVLIST_INIT;
269
235 return 0; 270 return 0;
271}
272
273void event_active (struct event *ev, int res, short ncalls)
274{
275 dLOOPev;
276
277 if (res & EV_TIMEOUT)
278 ev_feed_event (EV_A_ &ev->to, res & EV_TIMEOUT);
279
280 if (res & EV_SIGNAL)
281 ev_feed_event (EV_A_ &ev->iosig.sig, res & EV_SIGNAL);
282
283 if (res & (EV_READ | EV_WRITE))
284 ev_feed_event (EV_A_ &ev->iosig.io, res & (EV_READ | EV_WRITE));
236} 285}
237 286
238int event_pending (struct event *ev, short events, struct timeval *tv) 287int event_pending (struct event *ev, short events, struct timeval *tv)
239{ 288{
240 short revents; 289 short revents = 0;
290 dLOOPev;
291
241 292
242 if (ev->ev_events & EV_SIGNAL) 293 if (ev->ev_events & EV_SIGNAL)
243 { 294 {
244 /* sig */ 295 /* sig */
245 if (ev->iosig.sig.pending) 296 if (ev_is_active (&ev->iosig.sig) || ev_is_pending (&ev->iosig.sig))
246 revents |= EV_SIGNAL; 297 revents |= EV_SIGNAL;
247 } 298 }
248 else 299 else if (ev->ev_events & (EV_READ | EV_WRITE))
249 { 300 {
250 /* io */ 301 /* io */
251 if (ev->iosig.io.pending) 302 if (ev_is_active (&ev->iosig.io) || ev_is_pending (&ev->iosig.io))
252 revents |= ev->ev_events & (EV_READ | EV_WRITE); 303 revents |= ev->ev_events & (EV_READ | EV_WRITE);
253 } 304 }
254 305
255 if (ev->to.pending) 306 if (ev->ev_events & EV_TIMEOUT || ev_is_active (&ev->to) || ev_is_pending (&ev->to))
256 { 307 {
257 revents |= EV_TIMEOUT; 308 revents |= EV_TIMEOUT;
258 309
259 if (tv) 310 if (tv)
260 tv_set (tv, ev_now); /* not sure if this is right :) */ 311 tv_set (tv, ev_now (EV_A)); /* not sure if this is right :) */
261 } 312 }
262 313
263 return events & revents; 314 return events & revents;
264} 315}
265 316
… …
282 return 0; 333 return 0;
283} 334}
284 335
285int event_base_loop (struct event_base *base, int flags) 336int event_base_loop (struct event_base *base, int flags)
286{ 337{
287 do 338 dLOOPbase;
288 { 339
289 ev_loop (flags | EVLOOP_ONESHOT); 340 ev_loop (EV_A_ flags);
290 }
291 while (!(flags & (EVLOOP_ONESHOT | EVLOOP_NONBLOCK)) && x_actives && !ev_loop_done);
292 341
293 return 0; 342 return 0;
294} 343}
295 344
296int event_base_dispatch (struct event_base *base) 345int event_base_dispatch (struct event_base *base)
297{ 346{
298 return event_base_loop (base, 0); 347 return event_base_loop (base, 0);
299} 348}
300 349
301static void 350static void
302x_loopexit_cb (int revents, void *arg) 351x_loopexit_cb (int revents, void *base)
303{ 352{
304 ev_loop_done = 2; 353 dLOOPbase;
354
355 ev_unloop (EV_A_ EVUNLOOP_ONE);
305} 356}
306 357
307int event_base_loopexit (struct event_base *base, struct timeval *tv) 358int event_base_loopexit (struct event_base *base, struct timeval *tv)
308{ 359{
309 ev_tstamp after = tv_get (tv); 360 ev_tstamp after = tv_get (tv);
361 dLOOPbase;
310 362
311 ev_once (-1, 0, after >= 0. ? after : 0., x_loopexit_cb, (void *)base); 363 ev_once (EV_A_ -1, 0, after >= 0. ? after : 0., x_loopexit_cb, (void *)base);
364
365 return -1;
312} 366}
313 367
314struct x_once 368struct x_once
315{ 369{
316 int fd; 370 int fd;
… …
319}; 373};
320 374
321static void 375static void
322x_once_cb (int revents, void *arg) 376x_once_cb (int revents, void *arg)
323{ 377{
324 struct x_once *once = arg; 378 struct x_once *once = (struct x_once *)arg;
325 379
326 once->cb (once->fd, revents, once->arg); 380 once->cb (once->fd, (short)revents, once->arg);
327 free (once); 381 free (once);
328} 382}
329 383
330int event_base_once (struct event_base *base, int fd, short events, void (*cb)(int, short, void *), void *arg, struct timeval *tv) 384int event_base_once (struct event_base *base, int fd, short events, void (*cb)(int, short, void *), void *arg, struct timeval *tv)
331{ 385{
332 struct x_once *once = malloc (sizeof (struct x_once)); 386 struct x_once *once = (struct x_once *)malloc (sizeof (struct x_once));
387 dLOOPbase;
333 388
334 if (!once) 389 if (!once)
335 return -1; 390 return -1;
336 391
337 once->fd = fd; 392 once->fd = fd;
338 once->cb = cb; 393 once->cb = cb;
339 once->arg = arg; 394 once->arg = arg;
340 395
341 ev_once (fd, events & (EV_READ | EV_WRITE), tv_get (tv), x_once_cb, (void *)once); 396 ev_once (EV_A_ fd, events & (EV_READ | EV_WRITE), tv_get (tv), x_once_cb, (void *)once);
342 397
343 return 0; 398 return 0;
344} 399}
345 400
346int event_base_priority_init (struct event_base *base, int npri) 401int event_base_priority_init (struct event_base *base, int npri)
347{ 402{
348 return 0; 403 /*dLOOPbase;*/
349}
350 404
405 return 0;
406}
407

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