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Comparing libev/event.c (file contents):
Revision 1.1 by root, Thu Nov 1 15:39:16 2007 UTC vs.
Revision 1.20 by root, Tue Nov 6 18:49:32 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_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; 138 revents &= EV_READ | EV_WRITE | EV_TIMEOUT | EV_SIGNAL;
124
125 if (revents & EV_TIMEOUT)
126 --x_actives;
127 139
128 ev->ev_res = revents; 140 ev->ev_res = revents;
129 ev->ev_callback (ev->ev_fd, revents, ev->ev_arg); 141 ev->ev_callback (ev->ev_fd, revents, ev->ev_arg);
130} 142}
131 143
132static void 144static 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) 145x_cb_sig (EV_P_ struct ev_signal *w, int revents)
146{ 146{
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{
147 x_cb ((struct event *)(((char *)w) - offsetof (struct event, sig)), revents); 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);
148} 176}
149 177
150void 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)
151{ 179{
180 if (events & EV_SIGNAL)
181 ev_watcher_init (&ev->iosig.sig, x_cb_sig);
182 else
152 ev_watcher_init (&ev->io, x_cb_io); 183 ev_watcher_init (&ev->iosig.io, x_cb_io);
184
153 ev_watcher_init (&ev->to, x_cb_to); 185 ev_watcher_init (&ev->to, x_cb_to);
154 ev_watcher_init (&ev->sig, x_cb_sig);
155 186
156 ev->ev_base = x_cur; 187 ev->ev_base = x_cur; /* not threadsafe, but its like libevent works */
157 ev->ev_fd = fd; 188 ev->ev_fd = fd;
158 ev->ev_events = events; 189 ev->ev_events = events;
159 ev->ev_pri = 0; 190 ev->ev_pri = 0;
160 ev->ev_callback = cb; 191 ev->ev_callback = cb;
161 ev->ev_arg = arg; 192 ev->ev_arg = arg;
162 ev->ev_res = 0; 193 ev->ev_res = 0;
163} 194}
164 195
165int 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)
166{ 197{
167 event_base_once (x_cur, fd, events, cb, arg, tv); 198 return event_base_once (x_cur, fd, events, cb, arg, tv);
168} 199}
169 200
170int event_add (struct event *ev, struct timeval *tv) 201int event_add (struct event *ev, struct timeval *tv)
171{ 202{
203 dLOOPev;
204
205 /* disable all watchers */
206 event_del (ev);
207
208 if (ev->ev_events & EV_SIGNAL)
209 {
210 ev_signal_set (&ev->iosig.sig, ev->ev_fd);
211 ev_signal_start (EV_A_ &ev->iosig.sig);
212 }
213 else if (ev->ev_events & (EV_READ | EV_WRITE))
214 {
215 ev_io_set (&ev->iosig.io, ev->ev_fd, ev->ev_events & (EV_READ | EV_WRITE));
216 ev_io_start (EV_A_ &ev->iosig.io);
217 }
218
172 if (tv) 219 if (tv)
173 { 220 {
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.); 221 ev_timer_set (&ev->to, tv_get (tv), 0.);
181 ev_timer_start (&ev->to); 222 ev_timer_start (EV_A_ &ev->to);
182 ++x_actives;
183 }
184
185 if (ev->ev_events & (EV_READ|EV_WRITE))
186 { 223 }
187 if (ev_is_active (&ev->io))
188 {
189 ev_io_stop (&ev->io);
190 --x_actives;
191 }
192 224
193 ev_io_set (&ev->io, ev->ev_fd, ev->ev_events); 225 return 0;
194 ev_io_start (&ev->io); 226}
195 ++x_actives; 227
196 } 228int event_del (struct event *ev)
229{
230 dLOOPev;
197 231
198 if (ev->ev_events & EV_SIGNAL) 232 if (ev->ev_events & EV_SIGNAL)
199 { 233 {
234 /* sig */
235 if (ev_is_active (&ev->iosig.sig))
236 ev_signal_stop (EV_A_ &ev->iosig.sig);
237 }
238 else if (ev->ev_events & (EV_READ | EV_WRITE))
239 {
240 /* io */
200 if (ev_is_active (&ev->sig)) 241 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); 242 ev_io_stop (EV_A_ &ev->iosig.io);
219 --x_actives;
220 } 243 }
221 244
222 if (ev_is_active (&ev->to)) 245 if (ev_is_active (&ev->to))
223 {
224 ev_timer_stop (&ev->to); 246 ev_timer_stop (EV_A_ &ev->to);
225 --x_actives;
226 }
227 247
228 if (ev_is_active (&ev->sig))
229 {
230 ev_signal_stop (&ev->sig);
231 --x_actives;
232 }
233
234 return 0; 248 return 0;
235}
236
237void event_active (struct event *ev, int fd, short events)
238{
239 /* unclear what this does, likely internal-use */
240} 249}
241 250
242int event_pending (struct event *ev, short events, struct timeval *tv) 251int event_pending (struct event *ev, short events, struct timeval *tv)
243{ 252{
244 short revents; 253 short revents = 0;
254 dLOOPev;
245 255
246 if (ev->io.pending) 256
257 if (ev->ev_events & EV_SIGNAL)
258 {
259 /* sig */
260 if (ev_is_active (&ev->iosig.sig) || ev_is_pending (&ev->iosig.sig))
261 revents |= EV_SIGNAL;
262 }
263 else if (ev->ev_events & (EV_READ | EV_WRITE))
264 {
265 /* io */
266 if (ev_is_active (&ev->iosig.io) || ev_is_pending (&ev->iosig.io))
247 revents |= ev->ev_events & (EV_READ | EV_WRITE); 267 revents |= ev->ev_events & (EV_READ | EV_WRITE);
268 }
248 269
249 if (ev->to.pending) 270 if (ev->ev_events & EV_TIMEOUT || ev_is_active (&ev->to) || ev_is_pending (&ev->to))
250 { 271 {
251 revents |= EV_TIMEOUT; 272 revents |= EV_TIMEOUT;
252 273
253 if (tv) 274 if (tv)
254 tv_set (tv, ev_now); /* not sure if this is right :) */ 275 tv_set (tv, ev_now (EV_A)); /* not sure if this is right :) */
255 } 276 }
256
257 if (ev->sig.pending)
258 revents |= EV_SIGNAL;
259 277
260 return events & revents; 278 return events & revents;
261} 279}
262 280
263int event_priority_init (int npri) 281int event_priority_init (int npri)
… …
279 return 0; 297 return 0;
280} 298}
281 299
282int event_base_loop (struct event_base *base, int flags) 300int event_base_loop (struct event_base *base, int flags)
283{ 301{
284 do 302 dLOOPbase;
285 { 303
286 ev_loop (flags | EVLOOP_ONESHOT); 304 ev_loop (EV_A_ flags);
287 }
288 while (!(flags & (EVLOOP_ONESHOT | EVLOOP_NONBLOCK)) && x_actives && !ev_loop_done);
289 305
290 return 0; 306 return 0;
291} 307}
292 308
293int event_base_dispatch (struct event_base *base) 309int event_base_dispatch (struct event_base *base)
294{ 310{
295 return event_base_loop (base, 0); 311 return event_base_loop (base, 0);
296} 312}
297 313
298static void 314static void
299x_loopexit_cb (int revents, void *arg) 315x_loopexit_cb (int revents, void *base)
300{ 316{
301 ev_loop_done = 2; 317 dLOOPbase;
318
319 ev_unloop (EV_A_ EVUNLOOP_ONCE);
302} 320}
303 321
304int event_base_loopexit (struct event_base *base, struct timeval *tv) 322int event_base_loopexit (struct event_base *base, struct timeval *tv)
305{ 323{
306 ev_tstamp after = tv_get (tv); 324 ev_tstamp after = tv_get (tv);
325 dLOOPbase;
307 326
308 ev_once (-1, 0, after >= 0. ? after : 0., x_loopexit_cb, (void *)base); 327 ev_once (EV_A_ -1, 0, after >= 0. ? after : 0., x_loopexit_cb, (void *)base);
328
329 return -1;
309} 330}
310 331
311struct x_once 332struct x_once
312{ 333{
313 int fd; 334 int fd;
… …
316}; 337};
317 338
318static void 339static void
319x_once_cb (int revents, void *arg) 340x_once_cb (int revents, void *arg)
320{ 341{
321 struct x_once *once = arg; 342 struct x_once *once = (struct x_once *)arg;
322 343
323 once->cb (once->fd, revents, once->arg); 344 once->cb (once->fd, revents, once->arg);
324 free (once); 345 free (once);
325} 346}
326 347
327int event_base_once (struct event_base *base, int fd, short events, void (*cb)(int, short, void *), void *arg, struct timeval *tv) 348int event_base_once (struct event_base *base, int fd, short events, void (*cb)(int, short, void *), void *arg, struct timeval *tv)
328{ 349{
329 struct x_once *once = malloc (sizeof (struct x_once)); 350 struct x_once *once = (struct x_once *)malloc (sizeof (struct x_once));
351 dLOOPbase;
330 352
331 if (!once) 353 if (!once)
332 return -1; 354 return -1;
333 355
334 once->fd = fd; 356 once->fd = fd;
335 once->cb = cb; 357 once->cb = cb;
336 once->arg = arg; 358 once->arg = arg;
337 359
338 ev_once (fd, events & (EV_READ|EV_WRITE), tv_get (tv), x_once_cb, (void *)once); 360 ev_once (EV_A_ fd, events & (EV_READ | EV_WRITE), tv_get (tv), x_once_cb, (void *)once);
339 361
340 return 0; 362 return 0;
341} 363}
342 364
343int event_base_priority_init (struct event_base *base, int npri) 365int event_base_priority_init (struct event_base *base, int npri)
344{ 366{
345 return 0; 367 /*dLOOPbase;*/
346}
347 368
369 return 0;
370}
371

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