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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 1.21 by root, Thu Nov 8 21:14:15 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#include "ev.h"
36#include "event.h" 41#include "event.h"
37 42
43#if EV_MULTIPLICITY
44# define dLOOPev struct ev_loop *loop = (struct ev_loop *)ev->ev_base
45# define dLOOPbase struct ev_loop *loop = (struct ev_loop *)base
46#else
47# define dLOOPev
48# define dLOOPbase
49#endif
50
51/* never accessed, will always be cast from/to ev_loop */
38struct event_base 52struct event_base
39{ 53{
40 int dummy; 54 int dummy;
41}; 55};
42 56
43static int x_actives;
44
45static struct event_base x_base, *x_cur; 57static struct event_base *x_cur;
46 58
47static void 59static void
48tv_set (struct timeval *tv, ev_tstamp at) 60tv_set (struct timeval *tv, ev_tstamp at)
49{ 61{
50 tv->tv_sec = (long)at; 62 tv->tv_sec = (long)at;
… …
72 return "libev"; 84 return "libev";
73} 85}
74 86
75void *event_init (void) 87void *event_init (void)
76{ 88{
77 if (ev_init (0)) 89#if EV_MULTIPLICITY
78 return x_cur = &x_base; 90 if (x_cur)
91 x_cur = (struct event_base *)ev_loop_new (EVMETHOD_AUTO);
92 else
93 x_cur = (struct event_base *)ev_default_loop (EVMETHOD_AUTO);
94#else
95 assert (("multiple event bases not supported when not compiled with EV_MULTIPLICITY", !x_cur));
79 96
97 x_cur = (struct event_base *)(long)ev_default_loop (EVMETHOD_AUTO);
98#endif
99
80 return 0; 100 return x_cur;
81} 101}
82 102
83void event_base_free (struct event_base *base) 103void event_base_free (struct event_base *base)
84{ 104{
105 dLOOPbase;
106
107#if EV_MULTIPLICITY
108 if (ev_default_loop (EVMETHOD_AUTO) != loop)
109 ev_loop_destroy (loop);
110#endif
111}
112
113int event_dispatch (void)
114{
115 return event_base_dispatch (x_cur);
116}
117
118#ifdef EV_STANDALONE
119void event_set_log_callback (event_log_cb cb)
120{
85 /* nop */ 121 /* nop */
86} 122}
87 123#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}
97 124
98int event_loop (int flags) 125int event_loop (int flags)
99{ 126{
100 return event_base_loop (x_cur, flags); 127 return event_base_loop (x_cur, flags);
101} 128}
102 129
103int event_loopexit (struct timeval *tv) 130int event_loopexit (struct timeval *tv)
104{ 131{
105 event_base_loopexit (x_cur, tv); 132 return event_base_loopexit (x_cur, tv);
106} 133}
107 134
108static void 135static void
109x_cb (struct event *ev, int revents) 136x_cb (struct event *ev, int revents)
110{ 137{
111 if (ev->ev_events & EV_SIGNAL)
112 {
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
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; 138 revents &= EV_READ | EV_WRITE | EV_TIMEOUT | EV_SIGNAL;
131
132 if (revents & EV_TIMEOUT)
133 --x_actives;
134 139
135 ev->ev_res = revents; 140 ev->ev_res = revents;
136 ev->ev_callback (ev->ev_fd, revents, ev->ev_arg); 141 ev->ev_callback (ev->ev_fd, revents, ev->ev_arg);
137} 142}
138 143
139static void 144static 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) 145x_cb_sig (EV_P_ struct ev_signal *w, int revents)
153{ 146{
154 x_cb ((struct event *)(((char *)w) - offsetof (struct event, iosig.sig)), revents); 147 struct event *ev = (struct event *)(((char *)w) - offsetof (struct event, iosig.sig));
148
149 if (revents & EV_ERROR)
150 event_del (ev);
151
152 x_cb (ev, revents);
153}
154
155static void
156x_cb_io (EV_P_ struct ev_io *w, int revents)
157{
158 struct event *ev = (struct event *)(((char *)w) - offsetof (struct event, iosig.io));
159
160 if (revents & EV_ERROR)
161 event_del (ev);
162 else if (!(ev->ev_events & EV_PERSIST) && ev_is_active (w))
163 ev_io_stop (EV_A_ w);
164
165 x_cb (ev, revents);
166}
167
168static void
169x_cb_to (EV_P_ struct ev_timer *w, int revents)
170{
171 struct event *ev = (struct event *)(((char *)w) - offsetof (struct event, to));
172
173 event_del (ev);
174
175 x_cb (ev, revents);
155} 176}
156 177
157void event_set (struct event *ev, int fd, short events, void (*cb)(int, short, void *), void *arg) 178void event_set (struct event *ev, int fd, short events, void (*cb)(int, short, void *), void *arg)
158{ 179{
159 if (events & EV_SIGNAL) 180 if (events & EV_SIGNAL)
… …
161 else 182 else
162 ev_watcher_init (&ev->iosig.io, x_cb_io); 183 ev_watcher_init (&ev->iosig.io, x_cb_io);
163 184
164 ev_watcher_init (&ev->to, x_cb_to); 185 ev_watcher_init (&ev->to, x_cb_to);
165 186
166 ev->ev_base = x_cur; 187 ev->ev_base = x_cur; /* not threadsafe, but its like libevent works */
167 ev->ev_fd = fd; 188 ev->ev_fd = fd;
168 ev->ev_events = events; 189 ev->ev_events = events;
169 ev->ev_pri = 0; 190 ev->ev_pri = 0;
170 ev->ev_callback = cb; 191 ev->ev_callback = cb;
171 ev->ev_arg = arg; 192 ev->ev_arg = arg;
172 ev->ev_res = 0; 193 ev->ev_res = 0;
173} 194}
174 195
175int event_once (int fd, short events, void (*cb)(int, short, void *), void *arg, struct timeval *tv) 196int event_once (int fd, short events, void (*cb)(int, short, void *), void *arg, struct timeval *tv)
176{ 197{
177 event_base_once (x_cur, fd, events, cb, arg, tv); 198 return event_base_once (x_cur, fd, events, cb, arg, tv);
178} 199}
179 200
180int event_add (struct event *ev, struct timeval *tv) 201int event_add (struct event *ev, struct timeval *tv)
181{ 202{
203 dLOOPev;
204
182 /* disable all watchers */ 205 /* disable all watchers */
183 event_del (ev); 206 event_del (ev);
184 207
185 if (ev->ev_events & EV_SIGNAL) 208 if (ev->ev_events & EV_SIGNAL)
186 { 209 {
187 ev_signal_set (&ev->iosig.sig, ev->ev_fd); 210 ev_signal_set (&ev->iosig.sig, ev->ev_fd);
188 ev_signal_start (&ev->iosig.sig); 211 ev_signal_start (EV_A_ &ev->iosig.sig);
189 ++x_actives;
190 } 212 }
191 else if (ev->ev_events & (EV_READ | EV_WRITE)) 213 else if (ev->ev_events & (EV_READ | EV_WRITE))
192 { 214 {
193 ev_io_set (&ev->iosig.io, ev->ev_fd, ev->ev_events & (EV_READ | EV_WRITE)); 215 ev_io_set (&ev->iosig.io, ev->ev_fd, ev->ev_events & (EV_READ | EV_WRITE));
194 ev_io_start (&ev->iosig.io); 216 ev_io_start (EV_A_ &ev->iosig.io);
195 ++x_actives;
196 } 217 }
197 218
198 if (tv) 219 if (tv)
199 { 220 {
200 ev_timer_set (&ev->to, tv_get (tv), 0.); 221 ev_timer_set (&ev->to, tv_get (tv), 0.);
201 ev_timer_start (&ev->to); 222 ev_timer_start (EV_A_ &ev->to);
202 ++x_actives;
203 } 223 }
204 224
205 return 0; 225 return 0;
206} 226}
207 227
208int event_del (struct event *ev) 228int event_del (struct event *ev)
209{ 229{
230 dLOOPev;
231
210 if (ev->ev_events & EV_SIGNAL) 232 if (ev->ev_events & EV_SIGNAL)
211 { 233 {
212 /* sig */ 234 /* sig */
213 if (ev_is_active (&ev->iosig.sig)) 235 if (ev_is_active (&ev->iosig.sig))
214 {
215 ev_signal_stop (&ev->iosig.sig); 236 ev_signal_stop (EV_A_ &ev->iosig.sig);
216 --x_actives;
217 }
218 } 237 }
219 else 238 else if (ev->ev_events & (EV_READ | EV_WRITE))
220 { 239 {
221 /* io */ 240 /* io */
222 if (ev_is_active (&ev->iosig.io)) 241 if (ev_is_active (&ev->iosig.io))
223 {
224 ev_io_stop (&ev->iosig.io); 242 ev_io_stop (EV_A_ &ev->iosig.io);
225 --x_actives;
226 }
227 } 243 }
228 244
229 if (ev_is_active (&ev->to)) 245 if (ev_is_active (&ev->to))
230 {
231 ev_timer_stop (&ev->to); 246 ev_timer_stop (EV_A_ &ev->to);
232 --x_actives;
233 }
234 247
235 return 0; 248 return 0;
249}
250
251void event_active (struct event *ev, int res, short ncalls)
252{
253 if (res & EV_TIMEOUT)
254 ev_feed_event (&iosig.to, res & EV_TIMEOUT);
255
256 if (res & EV_SIGNAL)
257 ev_feed_event (&iosig.sig, res & EV_SIGNAL);
258
259 if (res & (EV_READ | EV_WRITE))
260 ev_feed_event (&iosig.io, res & (EV_READ | EV_WRITE));
236} 261}
237 262
238int event_pending (struct event *ev, short events, struct timeval *tv) 263int event_pending (struct event *ev, short events, struct timeval *tv)
239{ 264{
240 short revents; 265 short revents = 0;
266 dLOOPev;
267
241 268
242 if (ev->ev_events & EV_SIGNAL) 269 if (ev->ev_events & EV_SIGNAL)
243 { 270 {
244 /* sig */ 271 /* sig */
245 if (ev->iosig.sig.pending) 272 if (ev_is_active (&ev->iosig.sig) || ev_is_pending (&ev->iosig.sig))
246 revents |= EV_SIGNAL; 273 revents |= EV_SIGNAL;
247 } 274 }
248 else 275 else if (ev->ev_events & (EV_READ | EV_WRITE))
249 { 276 {
250 /* io */ 277 /* io */
251 if (ev->iosig.io.pending) 278 if (ev_is_active (&ev->iosig.io) || ev_is_pending (&ev->iosig.io))
252 revents |= ev->ev_events & (EV_READ | EV_WRITE); 279 revents |= ev->ev_events & (EV_READ | EV_WRITE);
253 } 280 }
254 281
255 if (ev->to.pending) 282 if (ev->ev_events & EV_TIMEOUT || ev_is_active (&ev->to) || ev_is_pending (&ev->to))
256 { 283 {
257 revents |= EV_TIMEOUT; 284 revents |= EV_TIMEOUT;
258 285
259 if (tv) 286 if (tv)
260 tv_set (tv, ev_now); /* not sure if this is right :) */ 287 tv_set (tv, ev_now (EV_A)); /* not sure if this is right :) */
261 } 288 }
262 289
263 return events & revents; 290 return events & revents;
264} 291}
265 292
… …
282 return 0; 309 return 0;
283} 310}
284 311
285int event_base_loop (struct event_base *base, int flags) 312int event_base_loop (struct event_base *base, int flags)
286{ 313{
287 do 314 dLOOPbase;
288 { 315
289 ev_loop (flags | EVLOOP_ONESHOT); 316 ev_loop (EV_A_ flags);
290 }
291 while (!(flags & (EVLOOP_ONESHOT | EVLOOP_NONBLOCK)) && x_actives && !ev_loop_done);
292 317
293 return 0; 318 return 0;
294} 319}
295 320
296int event_base_dispatch (struct event_base *base) 321int event_base_dispatch (struct event_base *base)
297{ 322{
298 return event_base_loop (base, 0); 323 return event_base_loop (base, 0);
299} 324}
300 325
301static void 326static void
302x_loopexit_cb (int revents, void *arg) 327x_loopexit_cb (int revents, void *base)
303{ 328{
304 ev_loop_done = 2; 329 dLOOPbase;
330
331 ev_unloop (EV_A_ EVUNLOOP_ONCE);
305} 332}
306 333
307int event_base_loopexit (struct event_base *base, struct timeval *tv) 334int event_base_loopexit (struct event_base *base, struct timeval *tv)
308{ 335{
309 ev_tstamp after = tv_get (tv); 336 ev_tstamp after = tv_get (tv);
337 dLOOPbase;
310 338
311 ev_once (-1, 0, after >= 0. ? after : 0., x_loopexit_cb, (void *)base); 339 ev_once (EV_A_ -1, 0, after >= 0. ? after : 0., x_loopexit_cb, (void *)base);
340
341 return -1;
312} 342}
313 343
314struct x_once 344struct x_once
315{ 345{
316 int fd; 346 int fd;
… …
319}; 349};
320 350
321static void 351static void
322x_once_cb (int revents, void *arg) 352x_once_cb (int revents, void *arg)
323{ 353{
324 struct x_once *once = arg; 354 struct x_once *once = (struct x_once *)arg;
325 355
326 once->cb (once->fd, revents, once->arg); 356 once->cb (once->fd, revents, once->arg);
327 free (once); 357 free (once);
328} 358}
329 359
330int event_base_once (struct event_base *base, int fd, short events, void (*cb)(int, short, void *), void *arg, struct timeval *tv) 360int event_base_once (struct event_base *base, int fd, short events, void (*cb)(int, short, void *), void *arg, struct timeval *tv)
331{ 361{
332 struct x_once *once = malloc (sizeof (struct x_once)); 362 struct x_once *once = (struct x_once *)malloc (sizeof (struct x_once));
363 dLOOPbase;
333 364
334 if (!once) 365 if (!once)
335 return -1; 366 return -1;
336 367
337 once->fd = fd; 368 once->fd = fd;
338 once->cb = cb; 369 once->cb = cb;
339 once->arg = arg; 370 once->arg = arg;
340 371
341 ev_once (fd, events & (EV_READ | EV_WRITE), tv_get (tv), x_once_cb, (void *)once); 372 ev_once (EV_A_ fd, events & (EV_READ | EV_WRITE), tv_get (tv), x_once_cb, (void *)once);
342 373
343 return 0; 374 return 0;
344} 375}
345 376
346int event_base_priority_init (struct event_base *base, int npri) 377int event_base_priority_init (struct event_base *base, int npri)
347{ 378{
348 return 0; 379 /*dLOOPbase;*/
349}
350 380
381 return 0;
382}
383

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