1 |
root |
1.1 |
#include <math.h> |
2 |
|
|
#include <stdlib.h> |
3 |
root |
1.7 |
#include <unistd.h> |
4 |
|
|
#include <fcntl.h> |
5 |
|
|
#include <signal.h> |
6 |
root |
1.1 |
|
7 |
|
|
#include <stdio.h> |
8 |
|
|
|
9 |
root |
1.4 |
#include <assert.h> |
10 |
root |
1.1 |
#include <errno.h> |
11 |
|
|
#include <sys/time.h> |
12 |
|
|
#include <time.h> |
13 |
|
|
|
14 |
|
|
#ifdef CLOCK_MONOTONIC |
15 |
|
|
# define HAVE_MONOTONIC 1 |
16 |
|
|
#endif |
17 |
|
|
|
18 |
root |
1.6 |
#define HAVE_REALTIME 1 |
19 |
root |
1.1 |
#define HAVE_EPOLL 1 |
20 |
root |
1.5 |
#define HAVE_SELECT 1 |
21 |
root |
1.1 |
|
22 |
root |
1.4 |
#define MIN_TIMEJUMP 1. /* minimum timejump that gets detected (if monotonic clock available) */ |
23 |
root |
1.1 |
#define MAX_BLOCKTIME 60. |
24 |
|
|
|
25 |
|
|
#include "ev.h" |
26 |
|
|
|
27 |
|
|
struct ev_watcher { |
28 |
|
|
EV_WATCHER (ev_watcher); |
29 |
|
|
}; |
30 |
|
|
|
31 |
|
|
struct ev_watcher_list { |
32 |
|
|
EV_WATCHER_LIST (ev_watcher_list); |
33 |
|
|
}; |
34 |
|
|
|
35 |
root |
1.4 |
static ev_tstamp now, diff; /* monotonic clock */ |
36 |
root |
1.1 |
ev_tstamp ev_now; |
37 |
|
|
int ev_method; |
38 |
|
|
|
39 |
|
|
static int have_monotonic; /* runtime */ |
40 |
|
|
|
41 |
|
|
static ev_tstamp method_fudge; /* stupid epoll-returns-early bug */ |
42 |
root |
1.5 |
static void (*method_modify)(int fd, int oev, int nev); |
43 |
root |
1.1 |
static void (*method_poll)(ev_tstamp timeout); |
44 |
|
|
|
45 |
root |
1.8 |
/*****************************************************************************/ |
46 |
|
|
|
47 |
root |
1.1 |
ev_tstamp |
48 |
|
|
ev_time (void) |
49 |
|
|
{ |
50 |
|
|
#if HAVE_REALTIME |
51 |
|
|
struct timespec ts; |
52 |
|
|
clock_gettime (CLOCK_REALTIME, &ts); |
53 |
|
|
return ts.tv_sec + ts.tv_nsec * 1e-9; |
54 |
|
|
#else |
55 |
|
|
struct timeval tv; |
56 |
|
|
gettimeofday (&tv, 0); |
57 |
|
|
return tv.tv_sec + tv.tv_usec * 1e-6; |
58 |
|
|
#endif |
59 |
|
|
} |
60 |
|
|
|
61 |
|
|
static ev_tstamp |
62 |
|
|
get_clock (void) |
63 |
|
|
{ |
64 |
|
|
#if HAVE_MONOTONIC |
65 |
|
|
if (have_monotonic) |
66 |
|
|
{ |
67 |
|
|
struct timespec ts; |
68 |
|
|
clock_gettime (CLOCK_MONOTONIC, &ts); |
69 |
|
|
return ts.tv_sec + ts.tv_nsec * 1e-9; |
70 |
|
|
} |
71 |
|
|
#endif |
72 |
|
|
|
73 |
|
|
return ev_time (); |
74 |
|
|
} |
75 |
|
|
|
76 |
|
|
#define array_needsize(base,cur,cnt,init) \ |
77 |
|
|
if ((cnt) > cur) \ |
78 |
|
|
{ \ |
79 |
root |
1.2 |
int newcnt = cur ? cur << 1 : 16; \ |
80 |
root |
1.1 |
fprintf (stderr, "resize(" # base ") from %d to %d\n", cur, newcnt);\ |
81 |
|
|
base = realloc (base, sizeof (*base) * (newcnt)); \ |
82 |
|
|
init (base + cur, newcnt - cur); \ |
83 |
|
|
cur = newcnt; \ |
84 |
|
|
} |
85 |
|
|
|
86 |
root |
1.8 |
/*****************************************************************************/ |
87 |
|
|
|
88 |
root |
1.1 |
typedef struct |
89 |
|
|
{ |
90 |
|
|
struct ev_io *head; |
91 |
|
|
unsigned char wev, rev; /* want, received event set */ |
92 |
|
|
} ANFD; |
93 |
|
|
|
94 |
|
|
static ANFD *anfds; |
95 |
|
|
static int anfdmax; |
96 |
|
|
|
97 |
|
|
static int *fdchanges; |
98 |
|
|
static int fdchangemax, fdchangecnt; |
99 |
|
|
|
100 |
|
|
static void |
101 |
|
|
anfds_init (ANFD *base, int count) |
102 |
|
|
{ |
103 |
|
|
while (count--) |
104 |
|
|
{ |
105 |
|
|
base->head = 0; |
106 |
|
|
base->wev = base->rev = EV_NONE; |
107 |
|
|
++base; |
108 |
|
|
} |
109 |
|
|
} |
110 |
|
|
|
111 |
|
|
typedef struct |
112 |
|
|
{ |
113 |
|
|
struct ev_watcher *w; |
114 |
|
|
int events; |
115 |
|
|
} ANPENDING; |
116 |
|
|
|
117 |
|
|
static ANPENDING *pendings; |
118 |
|
|
static int pendingmax, pendingcnt; |
119 |
|
|
|
120 |
|
|
static void |
121 |
|
|
event (struct ev_watcher *w, int events) |
122 |
|
|
{ |
123 |
|
|
w->pending = ++pendingcnt; |
124 |
|
|
array_needsize (pendings, pendingmax, pendingcnt, ); |
125 |
|
|
pendings [pendingcnt - 1].w = w; |
126 |
|
|
pendings [pendingcnt - 1].events = events; |
127 |
|
|
} |
128 |
|
|
|
129 |
|
|
static void |
130 |
|
|
fd_event (int fd, int events) |
131 |
|
|
{ |
132 |
|
|
ANFD *anfd = anfds + fd; |
133 |
|
|
struct ev_io *w; |
134 |
|
|
|
135 |
|
|
for (w = anfd->head; w; w = w->next) |
136 |
|
|
{ |
137 |
|
|
int ev = w->events & events; |
138 |
|
|
|
139 |
|
|
if (ev) |
140 |
|
|
event ((struct ev_watcher *)w, ev); |
141 |
|
|
} |
142 |
|
|
} |
143 |
|
|
|
144 |
root |
1.9 |
static void |
145 |
|
|
queue_events (struct ev_watcher **events, int eventcnt, int type) |
146 |
|
|
{ |
147 |
|
|
int i; |
148 |
|
|
|
149 |
|
|
for (i = 0; i < eventcnt; ++i) |
150 |
|
|
event (events [i], type); |
151 |
|
|
} |
152 |
|
|
|
153 |
root |
1.8 |
/*****************************************************************************/ |
154 |
|
|
|
155 |
root |
1.4 |
static struct ev_timer **atimers; |
156 |
|
|
static int atimermax, atimercnt; |
157 |
|
|
|
158 |
|
|
static struct ev_timer **rtimers; |
159 |
|
|
static int rtimermax, rtimercnt; |
160 |
root |
1.1 |
|
161 |
|
|
static void |
162 |
root |
1.4 |
upheap (struct ev_timer **timers, int k) |
163 |
root |
1.1 |
{ |
164 |
|
|
struct ev_timer *w = timers [k]; |
165 |
|
|
|
166 |
|
|
while (k && timers [k >> 1]->at > w->at) |
167 |
|
|
{ |
168 |
|
|
timers [k] = timers [k >> 1]; |
169 |
|
|
timers [k]->active = k + 1; |
170 |
|
|
k >>= 1; |
171 |
|
|
} |
172 |
|
|
|
173 |
|
|
timers [k] = w; |
174 |
|
|
timers [k]->active = k + 1; |
175 |
|
|
|
176 |
|
|
} |
177 |
|
|
|
178 |
|
|
static void |
179 |
root |
1.4 |
downheap (struct ev_timer **timers, int N, int k) |
180 |
root |
1.1 |
{ |
181 |
|
|
struct ev_timer *w = timers [k]; |
182 |
|
|
|
183 |
root |
1.4 |
while (k < (N >> 1)) |
184 |
root |
1.1 |
{ |
185 |
|
|
int j = k << 1; |
186 |
|
|
|
187 |
root |
1.4 |
if (j + 1 < N && timers [j]->at > timers [j + 1]->at) |
188 |
root |
1.1 |
++j; |
189 |
|
|
|
190 |
|
|
if (w->at <= timers [j]->at) |
191 |
|
|
break; |
192 |
|
|
|
193 |
|
|
timers [k] = timers [j]; |
194 |
root |
1.2 |
timers [k]->active = k + 1; |
195 |
root |
1.1 |
k = j; |
196 |
|
|
} |
197 |
|
|
|
198 |
|
|
timers [k] = w; |
199 |
|
|
timers [k]->active = k + 1; |
200 |
|
|
} |
201 |
|
|
|
202 |
root |
1.8 |
/*****************************************************************************/ |
203 |
|
|
|
204 |
root |
1.7 |
typedef struct |
205 |
|
|
{ |
206 |
|
|
struct ev_signal *head; |
207 |
|
|
sig_atomic_t gotsig; |
208 |
|
|
} ANSIG; |
209 |
|
|
|
210 |
|
|
static ANSIG *signals; |
211 |
root |
1.4 |
static int signalmax; |
212 |
root |
1.1 |
|
213 |
root |
1.7 |
static int sigpipe [2]; |
214 |
|
|
static sig_atomic_t gotsig; |
215 |
|
|
static struct ev_io sigev; |
216 |
|
|
|
217 |
root |
1.1 |
static void |
218 |
root |
1.7 |
signals_init (ANSIG *base, int count) |
219 |
root |
1.1 |
{ |
220 |
|
|
while (count--) |
221 |
root |
1.7 |
{ |
222 |
|
|
base->head = 0; |
223 |
|
|
base->gotsig = 0; |
224 |
|
|
++base; |
225 |
|
|
} |
226 |
|
|
} |
227 |
|
|
|
228 |
|
|
static void |
229 |
|
|
sighandler (int signum) |
230 |
|
|
{ |
231 |
|
|
signals [signum - 1].gotsig = 1; |
232 |
|
|
|
233 |
|
|
if (!gotsig) |
234 |
|
|
{ |
235 |
|
|
gotsig = 1; |
236 |
|
|
write (sigpipe [1], &gotsig, 1); |
237 |
|
|
} |
238 |
|
|
} |
239 |
|
|
|
240 |
|
|
static void |
241 |
|
|
sigcb (struct ev_io *iow, int revents) |
242 |
|
|
{ |
243 |
|
|
struct ev_signal *w; |
244 |
|
|
int sig; |
245 |
|
|
|
246 |
|
|
gotsig = 0; |
247 |
|
|
read (sigpipe [0], &revents, 1); |
248 |
|
|
|
249 |
|
|
for (sig = signalmax; sig--; ) |
250 |
|
|
if (signals [sig].gotsig) |
251 |
|
|
{ |
252 |
|
|
signals [sig].gotsig = 0; |
253 |
|
|
|
254 |
|
|
for (w = signals [sig].head; w; w = w->next) |
255 |
|
|
event ((struct ev_watcher *)w, EV_SIGNAL); |
256 |
|
|
} |
257 |
|
|
} |
258 |
|
|
|
259 |
|
|
static void |
260 |
|
|
siginit (void) |
261 |
|
|
{ |
262 |
|
|
fcntl (sigpipe [0], F_SETFD, FD_CLOEXEC); |
263 |
|
|
fcntl (sigpipe [1], F_SETFD, FD_CLOEXEC); |
264 |
|
|
|
265 |
|
|
/* rather than sort out wether we really need nb, set it */ |
266 |
|
|
fcntl (sigpipe [0], F_SETFL, O_NONBLOCK); |
267 |
|
|
fcntl (sigpipe [1], F_SETFL, O_NONBLOCK); |
268 |
|
|
|
269 |
|
|
evio_set (&sigev, sigpipe [0], EV_READ); |
270 |
|
|
evio_start (&sigev); |
271 |
root |
1.1 |
} |
272 |
|
|
|
273 |
root |
1.8 |
/*****************************************************************************/ |
274 |
|
|
|
275 |
root |
1.9 |
static struct ev_idle **idles; |
276 |
|
|
static int idlemax, idlecnt; |
277 |
|
|
|
278 |
|
|
static struct ev_check **checks; |
279 |
|
|
static int checkmax, checkcnt; |
280 |
|
|
|
281 |
|
|
/*****************************************************************************/ |
282 |
|
|
|
283 |
root |
1.1 |
#if HAVE_EPOLL |
284 |
|
|
# include "ev_epoll.c" |
285 |
|
|
#endif |
286 |
|
|
#if HAVE_SELECT |
287 |
|
|
# include "ev_select.c" |
288 |
|
|
#endif |
289 |
|
|
|
290 |
|
|
int ev_init (int flags) |
291 |
|
|
{ |
292 |
|
|
#if HAVE_MONOTONIC |
293 |
|
|
{ |
294 |
|
|
struct timespec ts; |
295 |
|
|
if (!clock_gettime (CLOCK_MONOTONIC, &ts)) |
296 |
|
|
have_monotonic = 1; |
297 |
|
|
} |
298 |
|
|
#endif |
299 |
|
|
|
300 |
|
|
ev_now = ev_time (); |
301 |
root |
1.4 |
now = get_clock (); |
302 |
|
|
diff = ev_now - now; |
303 |
root |
1.1 |
|
304 |
root |
1.7 |
if (pipe (sigpipe)) |
305 |
|
|
return 0; |
306 |
|
|
|
307 |
|
|
ev_method = EVMETHOD_NONE; |
308 |
root |
1.1 |
#if HAVE_EPOLL |
309 |
root |
1.7 |
if (ev_method == EVMETHOD_NONE) epoll_init (flags); |
310 |
root |
1.1 |
#endif |
311 |
|
|
#if HAVE_SELECT |
312 |
root |
1.7 |
if (ev_method == EVMETHOD_NONE) select_init (flags); |
313 |
root |
1.1 |
#endif |
314 |
|
|
|
315 |
root |
1.7 |
if (ev_method) |
316 |
|
|
{ |
317 |
|
|
evw_init (&sigev, sigcb, 0); |
318 |
|
|
siginit (); |
319 |
|
|
} |
320 |
|
|
|
321 |
root |
1.1 |
return ev_method; |
322 |
|
|
} |
323 |
|
|
|
324 |
root |
1.8 |
/*****************************************************************************/ |
325 |
|
|
|
326 |
root |
1.1 |
void ev_prefork (void) |
327 |
|
|
{ |
328 |
|
|
} |
329 |
|
|
|
330 |
|
|
void ev_postfork_parent (void) |
331 |
|
|
{ |
332 |
|
|
} |
333 |
|
|
|
334 |
|
|
void ev_postfork_child (void) |
335 |
|
|
{ |
336 |
|
|
#if HAVE_EPOLL |
337 |
root |
1.5 |
if (ev_method == EVMETHOD_EPOLL) |
338 |
|
|
epoll_postfork_child (); |
339 |
root |
1.1 |
#endif |
340 |
root |
1.7 |
|
341 |
|
|
evio_stop (&sigev); |
342 |
|
|
close (sigpipe [0]); |
343 |
|
|
close (sigpipe [1]); |
344 |
|
|
pipe (sigpipe); |
345 |
|
|
siginit (); |
346 |
root |
1.1 |
} |
347 |
|
|
|
348 |
root |
1.8 |
/*****************************************************************************/ |
349 |
|
|
|
350 |
root |
1.1 |
static void |
351 |
root |
1.5 |
fd_reify (void) |
352 |
|
|
{ |
353 |
|
|
int i; |
354 |
|
|
|
355 |
|
|
for (i = 0; i < fdchangecnt; ++i) |
356 |
|
|
{ |
357 |
|
|
int fd = fdchanges [i]; |
358 |
|
|
ANFD *anfd = anfds + fd; |
359 |
|
|
struct ev_io *w; |
360 |
|
|
|
361 |
|
|
int wev = 0; |
362 |
|
|
|
363 |
|
|
for (w = anfd->head; w; w = w->next) |
364 |
|
|
wev |= w->events; |
365 |
|
|
|
366 |
|
|
if (anfd->wev != wev) |
367 |
|
|
{ |
368 |
|
|
method_modify (fd, anfd->wev, wev); |
369 |
|
|
anfd->wev = wev; |
370 |
|
|
} |
371 |
|
|
} |
372 |
|
|
|
373 |
|
|
fdchangecnt = 0; |
374 |
|
|
} |
375 |
|
|
|
376 |
|
|
static void |
377 |
root |
1.1 |
call_pending () |
378 |
|
|
{ |
379 |
|
|
int i; |
380 |
|
|
|
381 |
|
|
for (i = 0; i < pendingcnt; ++i) |
382 |
|
|
{ |
383 |
|
|
ANPENDING *p = pendings + i; |
384 |
|
|
|
385 |
|
|
if (p->w) |
386 |
|
|
{ |
387 |
|
|
p->w->pending = 0; |
388 |
|
|
p->w->cb (p->w, p->events); |
389 |
|
|
} |
390 |
|
|
} |
391 |
|
|
|
392 |
|
|
pendingcnt = 0; |
393 |
|
|
} |
394 |
|
|
|
395 |
|
|
static void |
396 |
root |
1.4 |
timers_reify (struct ev_timer **timers, int timercnt, ev_tstamp now) |
397 |
root |
1.1 |
{ |
398 |
root |
1.4 |
while (timercnt && timers [0]->at <= now) |
399 |
root |
1.1 |
{ |
400 |
|
|
struct ev_timer *w = timers [0]; |
401 |
|
|
|
402 |
root |
1.4 |
/* first reschedule or stop timer */ |
403 |
root |
1.1 |
if (w->repeat) |
404 |
|
|
{ |
405 |
|
|
if (w->is_abs) |
406 |
root |
1.4 |
w->at += floor ((now - w->at) / w->repeat + 1.) * w->repeat; |
407 |
root |
1.1 |
else |
408 |
root |
1.4 |
w->at = now + w->repeat; |
409 |
|
|
|
410 |
|
|
assert (w->at > now); |
411 |
root |
1.1 |
|
412 |
root |
1.4 |
downheap (timers, timercnt, 0); |
413 |
root |
1.1 |
} |
414 |
|
|
else |
415 |
root |
1.4 |
{ |
416 |
|
|
evtimer_stop (w); /* nonrepeating: stop timer */ |
417 |
|
|
--timercnt; /* maybe pass by reference instead? */ |
418 |
|
|
} |
419 |
root |
1.1 |
|
420 |
|
|
event ((struct ev_watcher *)w, EV_TIMEOUT); |
421 |
|
|
} |
422 |
|
|
} |
423 |
|
|
|
424 |
root |
1.4 |
static void |
425 |
|
|
time_update () |
426 |
|
|
{ |
427 |
|
|
int i; |
428 |
|
|
ev_now = ev_time (); |
429 |
|
|
|
430 |
|
|
if (have_monotonic) |
431 |
|
|
{ |
432 |
|
|
ev_tstamp odiff = diff; |
433 |
|
|
|
434 |
|
|
/* detecting time jumps is much more difficult */ |
435 |
|
|
for (i = 2; --i; ) /* loop a few times, before making important decisions */ |
436 |
|
|
{ |
437 |
|
|
now = get_clock (); |
438 |
|
|
diff = ev_now - now; |
439 |
|
|
|
440 |
|
|
if (fabs (odiff - diff) < MIN_TIMEJUMP) |
441 |
|
|
return; /* all is well */ |
442 |
|
|
|
443 |
|
|
ev_now = ev_time (); |
444 |
|
|
} |
445 |
|
|
|
446 |
|
|
/* time jump detected, reschedule atimers */ |
447 |
|
|
for (i = 0; i < atimercnt; ++i) |
448 |
|
|
{ |
449 |
|
|
struct ev_timer *w = atimers [i]; |
450 |
|
|
w->at += ceil ((ev_now - w->at) / w->repeat + 1.) * w->repeat; |
451 |
|
|
} |
452 |
|
|
} |
453 |
|
|
else |
454 |
|
|
{ |
455 |
|
|
if (now > ev_now || now < ev_now - MAX_BLOCKTIME - MIN_TIMEJUMP) |
456 |
|
|
/* time jump detected, adjust rtimers */ |
457 |
|
|
for (i = 0; i < rtimercnt; ++i) |
458 |
|
|
rtimers [i]->at += ev_now - now; |
459 |
|
|
|
460 |
|
|
now = ev_now; |
461 |
|
|
} |
462 |
|
|
} |
463 |
|
|
|
464 |
root |
1.1 |
int ev_loop_done; |
465 |
|
|
|
466 |
root |
1.4 |
void ev_loop (int flags) |
467 |
root |
1.1 |
{ |
468 |
|
|
double block; |
469 |
|
|
ev_loop_done = flags & EVLOOP_ONESHOT; |
470 |
|
|
|
471 |
root |
1.9 |
if (checkcnt) |
472 |
|
|
{ |
473 |
|
|
queue_events (checks, checkcnt, EV_CHECK); |
474 |
|
|
call_pending (); |
475 |
|
|
} |
476 |
|
|
|
477 |
root |
1.1 |
do |
478 |
|
|
{ |
479 |
|
|
/* update fd-related kernel structures */ |
480 |
root |
1.5 |
fd_reify (); |
481 |
root |
1.1 |
|
482 |
|
|
/* calculate blocking time */ |
483 |
root |
1.9 |
if (flags & EVLOOP_NONBLOCK || idlecnt) |
484 |
root |
1.1 |
block = 0.; |
485 |
|
|
else |
486 |
|
|
{ |
487 |
root |
1.4 |
block = MAX_BLOCKTIME; |
488 |
|
|
|
489 |
|
|
if (rtimercnt) |
490 |
|
|
{ |
491 |
|
|
ev_tstamp to = rtimers [0]->at - get_clock () + method_fudge; |
492 |
|
|
if (block > to) block = to; |
493 |
|
|
} |
494 |
|
|
|
495 |
|
|
if (atimercnt) |
496 |
|
|
{ |
497 |
|
|
ev_tstamp to = atimers [0]->at - ev_time () + method_fudge; |
498 |
|
|
if (block > to) block = to; |
499 |
|
|
} |
500 |
|
|
|
501 |
root |
1.1 |
if (block < 0.) block = 0.; |
502 |
|
|
} |
503 |
|
|
|
504 |
|
|
method_poll (block); |
505 |
|
|
|
506 |
root |
1.4 |
/* update ev_now, do magic */ |
507 |
|
|
time_update (); |
508 |
|
|
|
509 |
root |
1.9 |
/* queue pending timers and reschedule them */ |
510 |
root |
1.4 |
/* absolute timers first */ |
511 |
|
|
timers_reify (atimers, atimercnt, ev_now); |
512 |
|
|
/* relative timers second */ |
513 |
|
|
timers_reify (rtimers, rtimercnt, now); |
514 |
root |
1.1 |
|
515 |
root |
1.9 |
/* queue idle watchers unless io or timers are pending */ |
516 |
|
|
if (!pendingcnt) |
517 |
|
|
queue_events (idles, idlecnt, EV_IDLE); |
518 |
|
|
|
519 |
|
|
/* queue check and possibly idle watchers */ |
520 |
|
|
queue_events (checks, checkcnt, EV_CHECK); |
521 |
|
|
|
522 |
root |
1.1 |
call_pending (); |
523 |
|
|
} |
524 |
|
|
while (!ev_loop_done); |
525 |
|
|
} |
526 |
|
|
|
527 |
root |
1.8 |
/*****************************************************************************/ |
528 |
|
|
|
529 |
root |
1.1 |
static void |
530 |
|
|
wlist_add (struct ev_watcher_list **head, struct ev_watcher_list *elem) |
531 |
|
|
{ |
532 |
|
|
elem->next = *head; |
533 |
|
|
*head = elem; |
534 |
|
|
} |
535 |
|
|
|
536 |
|
|
static void |
537 |
|
|
wlist_del (struct ev_watcher_list **head, struct ev_watcher_list *elem) |
538 |
|
|
{ |
539 |
|
|
while (*head) |
540 |
|
|
{ |
541 |
|
|
if (*head == elem) |
542 |
|
|
{ |
543 |
|
|
*head = elem->next; |
544 |
|
|
return; |
545 |
|
|
} |
546 |
|
|
|
547 |
|
|
head = &(*head)->next; |
548 |
|
|
} |
549 |
|
|
} |
550 |
|
|
|
551 |
|
|
static void |
552 |
|
|
ev_start (struct ev_watcher *w, int active) |
553 |
|
|
{ |
554 |
|
|
w->pending = 0; |
555 |
|
|
w->active = active; |
556 |
|
|
} |
557 |
|
|
|
558 |
|
|
static void |
559 |
|
|
ev_stop (struct ev_watcher *w) |
560 |
|
|
{ |
561 |
|
|
if (w->pending) |
562 |
|
|
pendings [w->pending - 1].w = 0; |
563 |
|
|
|
564 |
|
|
w->active = 0; |
565 |
|
|
/* nop */ |
566 |
|
|
} |
567 |
|
|
|
568 |
root |
1.8 |
/*****************************************************************************/ |
569 |
|
|
|
570 |
root |
1.1 |
void |
571 |
|
|
evio_start (struct ev_io *w) |
572 |
|
|
{ |
573 |
|
|
if (ev_is_active (w)) |
574 |
|
|
return; |
575 |
|
|
|
576 |
|
|
int fd = w->fd; |
577 |
|
|
|
578 |
|
|
ev_start ((struct ev_watcher *)w, 1); |
579 |
|
|
array_needsize (anfds, anfdmax, fd + 1, anfds_init); |
580 |
|
|
wlist_add ((struct ev_watcher_list **)&anfds[fd].head, (struct ev_watcher_list *)w); |
581 |
|
|
|
582 |
|
|
++fdchangecnt; |
583 |
|
|
array_needsize (fdchanges, fdchangemax, fdchangecnt, ); |
584 |
|
|
fdchanges [fdchangecnt - 1] = fd; |
585 |
|
|
} |
586 |
|
|
|
587 |
|
|
void |
588 |
|
|
evio_stop (struct ev_io *w) |
589 |
|
|
{ |
590 |
|
|
if (!ev_is_active (w)) |
591 |
|
|
return; |
592 |
|
|
|
593 |
|
|
wlist_del ((struct ev_watcher_list **)&anfds[w->fd].head, (struct ev_watcher_list *)w); |
594 |
|
|
ev_stop ((struct ev_watcher *)w); |
595 |
|
|
|
596 |
|
|
++fdchangecnt; |
597 |
|
|
array_needsize (fdchanges, fdchangemax, fdchangecnt, ); |
598 |
|
|
fdchanges [fdchangecnt - 1] = w->fd; |
599 |
|
|
} |
600 |
|
|
|
601 |
|
|
void |
602 |
|
|
evtimer_start (struct ev_timer *w) |
603 |
|
|
{ |
604 |
|
|
if (ev_is_active (w)) |
605 |
|
|
return; |
606 |
|
|
|
607 |
|
|
if (w->is_abs) |
608 |
|
|
{ |
609 |
root |
1.2 |
/* this formula differs from the one in timer_reify becuse we do not round up */ |
610 |
root |
1.1 |
if (w->repeat) |
611 |
|
|
w->at += ceil ((ev_now - w->at) / w->repeat) * w->repeat; |
612 |
root |
1.4 |
|
613 |
|
|
ev_start ((struct ev_watcher *)w, ++atimercnt); |
614 |
|
|
array_needsize (atimers, atimermax, atimercnt, ); |
615 |
|
|
atimers [atimercnt - 1] = w; |
616 |
|
|
upheap (atimers, atimercnt - 1); |
617 |
root |
1.1 |
} |
618 |
|
|
else |
619 |
root |
1.4 |
{ |
620 |
|
|
w->at += now; |
621 |
|
|
|
622 |
|
|
ev_start ((struct ev_watcher *)w, ++rtimercnt); |
623 |
|
|
array_needsize (rtimers, rtimermax, rtimercnt, ); |
624 |
|
|
rtimers [rtimercnt - 1] = w; |
625 |
|
|
upheap (rtimers, rtimercnt - 1); |
626 |
|
|
} |
627 |
root |
1.1 |
|
628 |
|
|
} |
629 |
|
|
|
630 |
|
|
void |
631 |
|
|
evtimer_stop (struct ev_timer *w) |
632 |
|
|
{ |
633 |
|
|
if (!ev_is_active (w)) |
634 |
|
|
return; |
635 |
|
|
|
636 |
root |
1.4 |
if (w->is_abs) |
637 |
root |
1.2 |
{ |
638 |
root |
1.4 |
if (w->active < atimercnt--) |
639 |
|
|
{ |
640 |
|
|
atimers [w->active - 1] = atimers [atimercnt]; |
641 |
|
|
downheap (atimers, atimercnt, w->active - 1); |
642 |
|
|
} |
643 |
|
|
} |
644 |
|
|
else |
645 |
|
|
{ |
646 |
|
|
if (w->active < rtimercnt--) |
647 |
|
|
{ |
648 |
|
|
rtimers [w->active - 1] = rtimers [rtimercnt]; |
649 |
|
|
downheap (rtimers, rtimercnt, w->active - 1); |
650 |
|
|
} |
651 |
root |
1.2 |
} |
652 |
|
|
|
653 |
root |
1.1 |
ev_stop ((struct ev_watcher *)w); |
654 |
|
|
} |
655 |
|
|
|
656 |
|
|
void |
657 |
|
|
evsignal_start (struct ev_signal *w) |
658 |
|
|
{ |
659 |
|
|
if (ev_is_active (w)) |
660 |
|
|
return; |
661 |
|
|
|
662 |
|
|
ev_start ((struct ev_watcher *)w, 1); |
663 |
|
|
array_needsize (signals, signalmax, w->signum, signals_init); |
664 |
root |
1.7 |
wlist_add ((struct ev_watcher_list **)&signals [w->signum - 1].head, (struct ev_watcher_list *)w); |
665 |
|
|
|
666 |
|
|
if (!w->next) |
667 |
|
|
{ |
668 |
|
|
struct sigaction sa; |
669 |
|
|
sa.sa_handler = sighandler; |
670 |
|
|
sigfillset (&sa.sa_mask); |
671 |
|
|
sa.sa_flags = 0; |
672 |
|
|
sigaction (w->signum, &sa, 0); |
673 |
|
|
} |
674 |
root |
1.1 |
} |
675 |
|
|
|
676 |
|
|
void |
677 |
|
|
evsignal_stop (struct ev_signal *w) |
678 |
|
|
{ |
679 |
|
|
if (!ev_is_active (w)) |
680 |
|
|
return; |
681 |
|
|
|
682 |
root |
1.7 |
wlist_del ((struct ev_watcher_list **)&signals [w->signum - 1].head, (struct ev_watcher_list *)w); |
683 |
root |
1.1 |
ev_stop ((struct ev_watcher *)w); |
684 |
root |
1.7 |
|
685 |
|
|
if (!signals [w->signum - 1].head) |
686 |
|
|
signal (w->signum, SIG_DFL); |
687 |
root |
1.1 |
} |
688 |
|
|
|
689 |
root |
1.9 |
void evidle_start (struct ev_idle *w) |
690 |
|
|
{ |
691 |
|
|
if (ev_is_active (w)) |
692 |
|
|
return; |
693 |
|
|
|
694 |
|
|
ev_start ((struct ev_watcher *)w, ++idlecnt); |
695 |
|
|
array_needsize (idles, idlemax, idlecnt, ); |
696 |
|
|
idles [idlecnt - 1] = w; |
697 |
|
|
} |
698 |
|
|
|
699 |
|
|
void evidle_stop (struct ev_idle *w) |
700 |
|
|
{ |
701 |
|
|
idles [w->active - 1] = idles [--idlecnt]; |
702 |
|
|
ev_stop ((struct ev_watcher *)w); |
703 |
|
|
} |
704 |
|
|
|
705 |
|
|
void evcheck_start (struct ev_check *w) |
706 |
|
|
{ |
707 |
|
|
if (ev_is_active (w)) |
708 |
|
|
return; |
709 |
|
|
|
710 |
|
|
ev_start ((struct ev_watcher *)w, ++checkcnt); |
711 |
|
|
array_needsize (checks, checkmax, checkcnt, ); |
712 |
|
|
checks [checkcnt - 1] = w; |
713 |
|
|
} |
714 |
|
|
|
715 |
|
|
void evcheck_stop (struct ev_check *w) |
716 |
|
|
{ |
717 |
|
|
checks [w->active - 1] = checks [--checkcnt]; |
718 |
|
|
ev_stop ((struct ev_watcher *)w); |
719 |
|
|
} |
720 |
|
|
|
721 |
root |
1.1 |
/*****************************************************************************/ |
722 |
|
|
#if 1 |
723 |
|
|
|
724 |
|
|
static void |
725 |
|
|
sin_cb (struct ev_io *w, int revents) |
726 |
|
|
{ |
727 |
|
|
fprintf (stderr, "sin %d, revents %d\n", w->fd, revents); |
728 |
|
|
} |
729 |
|
|
|
730 |
|
|
static void |
731 |
|
|
ocb (struct ev_timer *w, int revents) |
732 |
|
|
{ |
733 |
root |
1.4 |
//fprintf (stderr, "timer %f,%f (%x) (%f) d%p\n", w->at, w->repeat, revents, w->at - ev_time (), w->data); |
734 |
|
|
evtimer_stop (w); |
735 |
|
|
evtimer_start (w); |
736 |
root |
1.1 |
} |
737 |
|
|
|
738 |
root |
1.7 |
static void |
739 |
|
|
scb (struct ev_signal *w, int revents) |
740 |
|
|
{ |
741 |
|
|
fprintf (stderr, "signal %x,%d\n", revents, w->signum); |
742 |
|
|
} |
743 |
|
|
|
744 |
root |
1.9 |
static void |
745 |
|
|
gcb (struct ev_signal *w, int revents) |
746 |
|
|
{ |
747 |
|
|
fprintf (stderr, "generic %x\n", revents); |
748 |
|
|
} |
749 |
|
|
|
750 |
root |
1.1 |
int main (void) |
751 |
|
|
{ |
752 |
|
|
struct ev_io sin; |
753 |
|
|
|
754 |
|
|
ev_init (0); |
755 |
|
|
|
756 |
|
|
evw_init (&sin, sin_cb, 55); |
757 |
|
|
evio_set (&sin, 0, EV_READ); |
758 |
|
|
evio_start (&sin); |
759 |
|
|
|
760 |
root |
1.4 |
struct ev_timer t[10000]; |
761 |
root |
1.2 |
|
762 |
root |
1.9 |
#if 0 |
763 |
root |
1.2 |
int i; |
764 |
root |
1.4 |
for (i = 0; i < 10000; ++i) |
765 |
root |
1.2 |
{ |
766 |
|
|
struct ev_timer *w = t + i; |
767 |
|
|
evw_init (w, ocb, i); |
768 |
root |
1.4 |
evtimer_set_abs (w, drand48 (), 0.99775533); |
769 |
root |
1.2 |
evtimer_start (w); |
770 |
|
|
if (drand48 () < 0.5) |
771 |
|
|
evtimer_stop (w); |
772 |
|
|
} |
773 |
root |
1.4 |
#endif |
774 |
|
|
|
775 |
|
|
struct ev_timer t1; |
776 |
|
|
evw_init (&t1, ocb, 0); |
777 |
|
|
evtimer_set_abs (&t1, 5, 10); |
778 |
|
|
evtimer_start (&t1); |
779 |
root |
1.1 |
|
780 |
root |
1.7 |
struct ev_signal sig; |
781 |
|
|
evw_init (&sig, scb, 65535); |
782 |
|
|
evsignal_set (&sig, SIGQUIT); |
783 |
|
|
evsignal_start (&sig); |
784 |
|
|
|
785 |
root |
1.9 |
struct ev_check cw; |
786 |
|
|
evw_init (&cw, gcb, 0); |
787 |
|
|
evcheck_start (&cw); |
788 |
|
|
|
789 |
|
|
struct ev_idle iw; |
790 |
|
|
evw_init (&iw, gcb, 0); |
791 |
|
|
evidle_start (&iw); |
792 |
|
|
|
793 |
root |
1.1 |
ev_loop (0); |
794 |
|
|
|
795 |
|
|
return 0; |
796 |
|
|
} |
797 |
|
|
|
798 |
|
|
#endif |
799 |
|
|
|
800 |
|
|
|
801 |
|
|
|
802 |
|
|
|