ViewVC Help
View File | Revision Log | Show Annotations | Download File
/cvs/libev/event.c
(Generate patch)

Comparing libev/event.c (file contents):
Revision 1.3 by root, Fri Nov 2 11:02:23 2007 UTC vs.
Revision 1.14 by root, Sun Nov 4 19:45:09 2007 UTC

… …
30 */ 30 */
31 31
32#include <stddef.h> 32#include <stddef.h>
33#include <stdlib.h> 33#include <stdlib.h>
34#include <sys/time.h> 34#include <sys/time.h>
35#include <assert.h>
35 36
37#include "ev.h"
36#include "event.h" 38#include "event.h"
37 39
40#if EV_MULTIPLICITY
41# define dLOOPev struct ev_loop *loop = (struct ev_loop *)ev->ev_base
42# define dLOOPbase struct ev_loop *loop = (struct ev_loop *)base
43#else
44# define dLOOPev
45# define dLOOPbase
46#endif
47
48/* never accessed, will always be cast from/to ev_loop */
38struct event_base 49struct event_base
39{ 50{
40 int dummy; 51 int dummy;
41}; 52};
42 53
43static int x_actives;
44
45static struct event_base x_base, *x_cur; 54static struct event_base *x_cur;
46 55
47static void 56static void
48tv_set (struct timeval *tv, ev_tstamp at) 57tv_set (struct timeval *tv, ev_tstamp at)
49{ 58{
50 tv->tv_sec = (long)at; 59 tv->tv_sec = (long)at;
… …
72 return "libev"; 81 return "libev";
73} 82}
74 83
75void *event_init (void) 84void *event_init (void)
76{ 85{
77 if (ev_init (0)) 86#if EV_MULTIPLICITY
78 return x_cur = &x_base; 87 if (x_cur)
88 x_cur = (struct event_base *)ev_loop_new (EVMETHOD_AUTO);
89 else
90 x_cur = (struct event_base *)ev_default_loop (EVMETHOD_AUTO);
91#else
92 assert (("multiple event bases not supported when not compiled with EV_MULTIPLICITY", !x_cur));
79 93
94 x_cur = (struct event_base *)ev_default_loop (EVMETHOD_AUTO);
95#endif
96
80 return 0; 97 return x_cur;
81} 98}
82 99
83void event_base_free (struct event_base *base) 100void event_base_free (struct event_base *base)
84{ 101{
102 dLOOPbase;
103
104#if EV_MULTIPLICITY
105 if (ev_default_loop (EVMETHOD_AUTO) != loop)
106 ev_loop_destroy (loop);
107#endif
108}
109
110int event_dispatch (void)
111{
112 return event_base_dispatch (x_cur);
113}
114
115#ifdef EV_STANDALONE
116void event_set_log_callback (event_log_cb cb)
117{
85 /* nop */ 118 /* nop */
86} 119}
87 120#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}
97 121
98int event_loop (int flags) 122int event_loop (int flags)
99{ 123{
100 return event_base_loop (x_cur, flags); 124 return event_base_loop (x_cur, flags);
101} 125}
102 126
103int event_loopexit (struct timeval *tv) 127int event_loopexit (struct timeval *tv)
104{ 128{
105 event_base_loopexit (x_cur, tv); 129 return event_base_loopexit (x_cur, tv);
106} 130}
107 131
108static void 132static void
109x_cb (struct event *ev, int revents) 133x_cb (struct event *ev, int revents)
110{ 134{
111 if (ev_is_active (&ev->sig))
112 {
113 ev_signal_stop (&ev->sig);
114 --x_actives;
115 }
116
117 if (!(ev->ev_events & EV_PERSIST) && ev_is_active (&ev->io))
118 {
119 ev_io_stop (&ev->io);
120 --x_actives;
121 }
122
123 revents &= EV_READ | EV_WRITE | EV_TIMEOUT | EV_SIGNAL; 135 revents &= EV_READ | EV_WRITE | EV_TIMEOUT | EV_SIGNAL;
124
125 if (revents & EV_TIMEOUT)
126 --x_actives;
127 136
128 ev->ev_res = revents; 137 ev->ev_res = revents;
129 ev->ev_callback (ev->ev_fd, revents, ev->ev_arg); 138 ev->ev_callback (ev->ev_fd, revents, ev->ev_arg);
130} 139}
131 140
132static void 141static void
133x_cb_io (struct ev_io *w, int revents)
134{
135 x_cb ((struct event *)(((char *)w) - offsetof (struct event, io)), revents);
136}
137
138static void
139x_cb_to (struct ev_timer *w, int revents)
140{
141 x_cb ((struct event *)(((char *)w) - offsetof (struct event, to)), revents);
142}
143
144static void
145x_cb_sig (struct ev_signal *w, int revents) 142x_cb_sig (EV_P_ struct ev_signal *w, int revents)
146{ 143{
147 x_cb ((struct event *)(((char *)w) - offsetof (struct event, sig)), revents); 144 x_cb ((struct event *)(((char *)w) - offsetof (struct event, iosig.sig)), revents);
145}
146
147static void
148x_cb_io (EV_P_ struct ev_io *w, int revents)
149{
150 struct event *ev = (struct event *)(((char *)w) - offsetof (struct event, iosig.io));
151
152 if (!(ev->ev_events & EV_PERSIST) && ev_is_active (w))
153 ev_io_stop (EV_A_ w);
154
155 x_cb (ev, revents);
156}
157
158static void
159x_cb_to (EV_P_ struct ev_timer *w, int revents)
160{
161 struct event *ev = (struct event *)(((char *)w) - offsetof (struct event, to));
162
163 event_del (ev);
164
165 x_cb (ev, revents);
148} 166}
149 167
150void event_set (struct event *ev, int fd, short events, void (*cb)(int, short, void *), void *arg) 168void event_set (struct event *ev, int fd, short events, void (*cb)(int, short, void *), void *arg)
151{ 169{
170 if (events & EV_SIGNAL)
171 ev_watcher_init (&ev->iosig.sig, x_cb_sig);
172 else
152 ev_watcher_init (&ev->io, x_cb_io); 173 ev_watcher_init (&ev->iosig.io, x_cb_io);
174
153 ev_watcher_init (&ev->to, x_cb_to); 175 ev_watcher_init (&ev->to, x_cb_to);
154 ev_watcher_init (&ev->sig, x_cb_sig);
155 176
156 ev->ev_base = x_cur; 177 ev->ev_base = x_cur; /* not threadsafe, but its like libevent works */
157 ev->ev_fd = fd; 178 ev->ev_fd = fd;
158 ev->ev_events = events; 179 ev->ev_events = events;
159 ev->ev_pri = 0; 180 ev->ev_pri = 0;
160 ev->ev_callback = cb; 181 ev->ev_callback = cb;
161 ev->ev_arg = arg; 182 ev->ev_arg = arg;
162 ev->ev_res = 0; 183 ev->ev_res = 0;
163} 184}
164 185
165int event_once (int fd, short events, void (*cb)(int, short, void *), void *arg, struct timeval *tv) 186int event_once (int fd, short events, void (*cb)(int, short, void *), void *arg, struct timeval *tv)
166{ 187{
167 event_base_once (x_cur, fd, events, cb, arg, tv); 188 return event_base_once (x_cur, fd, events, cb, arg, tv);
168} 189}
169 190
170int event_add (struct event *ev, struct timeval *tv) 191int event_add (struct event *ev, struct timeval *tv)
171{ 192{
193 dLOOPev;
194
195 /* disable all watchers */
196 event_del (ev);
197
198 if (ev->ev_events & EV_SIGNAL)
199 {
200 ev_signal_set (&ev->iosig.sig, ev->ev_fd);
201 ev_signal_start (EV_A_ &ev->iosig.sig);
202 }
203 else if (ev->ev_events & (EV_READ | EV_WRITE))
204 {
205 ev_io_set (&ev->iosig.io, ev->ev_fd, ev->ev_events & (EV_READ | EV_WRITE));
206 ev_io_start (EV_A_ &ev->iosig.io);
207 }
208
172 if (tv) 209 if (tv)
173 { 210 {
174 if (ev_is_active (&ev->to))
175 {
176 ev_timer_stop (&ev->to);
177 --x_actives;
178 }
179
180 ev_timer_set (&ev->to, tv_get (tv), 0.); 211 ev_timer_set (&ev->to, tv_get (tv), 0.);
181 ev_timer_start (&ev->to); 212 ev_timer_start (EV_A_ &ev->to);
182 ++x_actives;
183 }
184
185 if (ev->ev_events & (EV_READ | EV_WRITE))
186 { 213 }
187 if (ev_is_active (&ev->io))
188 {
189 ev_io_stop (&ev->io);
190 --x_actives;
191 }
192 214
193 ev_io_set (&ev->io, ev->ev_fd, ev->ev_events & (EV_READ | EV_WRITE)); 215 return 0;
194 ev_io_start (&ev->io); 216}
195 ++x_actives; 217
196 } 218int event_del (struct event *ev)
219{
220 dLOOPev;
197 221
198 if (ev->ev_events & EV_SIGNAL) 222 if (ev->ev_events & EV_SIGNAL)
199 { 223 {
224 /* sig */
225 if (ev_is_active (&ev->iosig.sig))
226 ev_signal_stop (EV_A_ &ev->iosig.sig);
227 }
228 else
229 {
230 /* io */
200 if (ev_is_active (&ev->sig)) 231 if (ev_is_active (&ev->iosig.io))
201 {
202 ev_signal_stop (&ev->sig);
203 --x_actives;
204 }
205
206 ev_signal_set (&ev->sig, ev->ev_fd);
207 ev_signal_start (&ev->sig);
208 ++x_actives;
209 }
210
211 return 0;
212}
213
214int event_del (struct event *ev)
215{
216 if (ev_is_active (&ev->io))
217 {
218 ev_io_stop (&ev->io); 232 ev_io_stop (EV_A_ &ev->iosig.io);
219 --x_actives;
220 } 233 }
221 234
222 if (ev_is_active (&ev->to)) 235 if (ev_is_active (&ev->to))
223 {
224 ev_timer_stop (&ev->to); 236 ev_timer_stop (EV_A_ &ev->to);
225 --x_actives;
226 }
227
228 if (ev_is_active (&ev->sig))
229 {
230 ev_signal_stop (&ev->sig);
231 --x_actives;
232 }
233 237
234 return 0; 238 return 0;
235} 239}
236 240
237int event_pending (struct event *ev, short events, struct timeval *tv) 241int event_pending (struct event *ev, short events, struct timeval *tv)
238{ 242{
243 dLOOPev;
244
239 short revents; 245 short revents = 0;
240 246
241 if (ev->io.pending) 247 if (ev->ev_events & EV_SIGNAL)
248 {
249 /* sig */
250 if (ev_is_active (&ev->iosig.sig) || ev_is_pending (&ev->iosig.sig))
251 revents |= EV_SIGNAL;
252 }
253 else
254 {
255 /* io */
256 if (ev_is_active (&ev->iosig.io) || ev_is_pending (&ev->iosig.io))
242 revents |= ev->ev_events & (EV_READ | EV_WRITE); 257 revents |= ev->ev_events & (EV_READ | EV_WRITE);
258 }
243 259
244 if (ev->to.pending) 260 if (ev->ev_events & EV_TIMEOUT || ev_is_active (&ev->to) || ev_is_pending (&ev->to))
245 { 261 {
246 revents |= EV_TIMEOUT; 262 revents |= EV_TIMEOUT;
247 263
248 if (tv) 264 if (tv)
249 tv_set (tv, ev_now); /* not sure if this is right :) */ 265 tv_set (tv, ev_now (EV_A)); /* not sure if this is right :) */
250 } 266 }
251
252 if (ev->sig.pending)
253 revents |= EV_SIGNAL;
254 267
255 return events & revents; 268 return events & revents;
256} 269}
257 270
258int event_priority_init (int npri) 271int event_priority_init (int npri)
… …
274 return 0; 287 return 0;
275} 288}
276 289
277int event_base_loop (struct event_base *base, int flags) 290int event_base_loop (struct event_base *base, int flags)
278{ 291{
279 do 292 dLOOPbase;
280 { 293
281 ev_loop (flags | EVLOOP_ONESHOT); 294 ev_loop (EV_A_ flags);
282 }
283 while (!(flags & (EVLOOP_ONESHOT | EVLOOP_NONBLOCK)) && x_actives && !ev_loop_done);
284 295
285 return 0; 296 return 0;
286} 297}
287 298
288int event_base_dispatch (struct event_base *base) 299int event_base_dispatch (struct event_base *base)
289{ 300{
290 return event_base_loop (base, 0); 301 return event_base_loop (base, 0);
291} 302}
292 303
293static void 304static void
294x_loopexit_cb (int revents, void *arg) 305x_loopexit_cb (int revents, void *base)
295{ 306{
296 ev_loop_done = 2; 307 dLOOPbase;
308
309 ev_unloop (EV_A_ EVUNLOOP_ONCE);
297} 310}
298 311
299int event_base_loopexit (struct event_base *base, struct timeval *tv) 312int event_base_loopexit (struct event_base *base, struct timeval *tv)
300{ 313{
314 dLOOPbase;
301 ev_tstamp after = tv_get (tv); 315 ev_tstamp after = tv_get (tv);
302 316
303 ev_once (-1, 0, after >= 0. ? after : 0., x_loopexit_cb, (void *)base); 317 ev_once (EV_A_ -1, 0, after >= 0. ? after : 0., x_loopexit_cb, (void *)base);
318
319 return -1;
304} 320}
305 321
306struct x_once 322struct x_once
307{ 323{
308 int fd; 324 int fd;
… …
319 free (once); 335 free (once);
320} 336}
321 337
322int event_base_once (struct event_base *base, int fd, short events, void (*cb)(int, short, void *), void *arg, struct timeval *tv) 338int event_base_once (struct event_base *base, int fd, short events, void (*cb)(int, short, void *), void *arg, struct timeval *tv)
323{ 339{
340 dLOOPbase;
324 struct x_once *once = malloc (sizeof (struct x_once)); 341 struct x_once *once = malloc (sizeof (struct x_once));
325 342
326 if (!once) 343 if (!once)
327 return -1; 344 return -1;
328 345
329 once->fd = fd; 346 once->fd = fd;
330 once->cb = cb; 347 once->cb = cb;
331 once->arg = arg; 348 once->arg = arg;
332 349
333 ev_once (fd, events & (EV_READ | EV_WRITE), tv_get (tv), x_once_cb, (void *)once); 350 ev_once (EV_A_ fd, events & (EV_READ | EV_WRITE), tv_get (tv), x_once_cb, (void *)once);
334 351
335 return 0; 352 return 0;
336} 353}
337 354
338int event_base_priority_init (struct event_base *base, int npri) 355int event_base_priority_init (struct event_base *base, int npri)
339{ 356{
340 return 0; 357 /*dLOOPbase;*/
341}
342 358
359 return 0;
360}
361

Diff Legend

– Removed lines
+ Added lines
< Changed lines
> Changed lines