| 1 |
#include <math.h> |
| 2 |
#include <stdlib.h> |
| 3 |
#include <unistd.h> |
| 4 |
#include <fcntl.h> |
| 5 |
#include <signal.h> |
| 6 |
|
| 7 |
#include <stdio.h> |
| 8 |
|
| 9 |
#include <assert.h> |
| 10 |
#include <errno.h> |
| 11 |
#include <sys/time.h> |
| 12 |
#include <time.h> |
| 13 |
|
| 14 |
#ifndef HAVE_MONOTONIC |
| 15 |
# ifdef CLOCK_MONOTONIC |
| 16 |
# define HAVE_MONOTONIC 1 |
| 17 |
# endif |
| 18 |
#endif |
| 19 |
|
| 20 |
#ifndef HAVE_SELECT |
| 21 |
# define HAVE_SELECT 1 |
| 22 |
#endif |
| 23 |
|
| 24 |
#ifndef HAVE_EPOLL |
| 25 |
# define HAVE_EPOLL 0 |
| 26 |
#endif |
| 27 |
|
| 28 |
#ifndef HAVE_REALTIME |
| 29 |
# define HAVE_REALTIME 1 /* posix requirement, but might be slower */ |
| 30 |
#endif |
| 31 |
|
| 32 |
#define MIN_TIMEJUMP 1. /* minimum timejump that gets detected (if monotonic clock available) */ |
| 33 |
#define MAX_BLOCKTIME 60. |
| 34 |
|
| 35 |
#include "ev.h" |
| 36 |
|
| 37 |
struct ev_watcher { |
| 38 |
EV_WATCHER (ev_watcher); |
| 39 |
}; |
| 40 |
|
| 41 |
struct ev_watcher_list { |
| 42 |
EV_WATCHER_LIST (ev_watcher_list); |
| 43 |
}; |
| 44 |
|
| 45 |
typedef struct ev_watcher *W; |
| 46 |
typedef struct ev_watcher_list *WL; |
| 47 |
|
| 48 |
static ev_tstamp now, diff; /* monotonic clock */ |
| 49 |
ev_tstamp ev_now; |
| 50 |
int ev_method; |
| 51 |
|
| 52 |
static int have_monotonic; /* runtime */ |
| 53 |
|
| 54 |
static ev_tstamp method_fudge; /* stupid epoll-returns-early bug */ |
| 55 |
static void (*method_modify)(int fd, int oev, int nev); |
| 56 |
static void (*method_poll)(ev_tstamp timeout); |
| 57 |
|
| 58 |
/*****************************************************************************/ |
| 59 |
|
| 60 |
ev_tstamp |
| 61 |
ev_time (void) |
| 62 |
{ |
| 63 |
#if HAVE_REALTIME |
| 64 |
struct timespec ts; |
| 65 |
clock_gettime (CLOCK_REALTIME, &ts); |
| 66 |
return ts.tv_sec + ts.tv_nsec * 1e-9; |
| 67 |
#else |
| 68 |
struct timeval tv; |
| 69 |
gettimeofday (&tv, 0); |
| 70 |
return tv.tv_sec + tv.tv_usec * 1e-6; |
| 71 |
#endif |
| 72 |
} |
| 73 |
|
| 74 |
static ev_tstamp |
| 75 |
get_clock (void) |
| 76 |
{ |
| 77 |
#if HAVE_MONOTONIC |
| 78 |
if (have_monotonic) |
| 79 |
{ |
| 80 |
struct timespec ts; |
| 81 |
clock_gettime (CLOCK_MONOTONIC, &ts); |
| 82 |
return ts.tv_sec + ts.tv_nsec * 1e-9; |
| 83 |
} |
| 84 |
#endif |
| 85 |
|
| 86 |
return ev_time (); |
| 87 |
} |
| 88 |
|
| 89 |
#define array_needsize(base,cur,cnt,init) \ |
| 90 |
if ((cnt) > cur) \ |
| 91 |
{ \ |
| 92 |
int newcnt = cur ? cur << 1 : 16; \ |
| 93 |
fprintf (stderr, "resize(" # base ") from %d to %d\n", cur, newcnt);\ |
| 94 |
base = realloc (base, sizeof (*base) * (newcnt)); \ |
| 95 |
init (base + cur, newcnt - cur); \ |
| 96 |
cur = newcnt; \ |
| 97 |
} |
| 98 |
|
| 99 |
/*****************************************************************************/ |
| 100 |
|
| 101 |
typedef struct |
| 102 |
{ |
| 103 |
struct ev_io *head; |
| 104 |
unsigned char wev, rev; /* want, received event set */ |
| 105 |
} ANFD; |
| 106 |
|
| 107 |
static ANFD *anfds; |
| 108 |
static int anfdmax; |
| 109 |
|
| 110 |
static int *fdchanges; |
| 111 |
static int fdchangemax, fdchangecnt; |
| 112 |
|
| 113 |
static void |
| 114 |
anfds_init (ANFD *base, int count) |
| 115 |
{ |
| 116 |
while (count--) |
| 117 |
{ |
| 118 |
base->head = 0; |
| 119 |
base->wev = base->rev = EV_NONE; |
| 120 |
++base; |
| 121 |
} |
| 122 |
} |
| 123 |
|
| 124 |
typedef struct |
| 125 |
{ |
| 126 |
W w; |
| 127 |
int events; |
| 128 |
} ANPENDING; |
| 129 |
|
| 130 |
static ANPENDING *pendings; |
| 131 |
static int pendingmax, pendingcnt; |
| 132 |
|
| 133 |
static void |
| 134 |
event (W w, int events) |
| 135 |
{ |
| 136 |
w->pending = ++pendingcnt; |
| 137 |
array_needsize (pendings, pendingmax, pendingcnt, ); |
| 138 |
pendings [pendingcnt - 1].w = w; |
| 139 |
pendings [pendingcnt - 1].events = events; |
| 140 |
} |
| 141 |
|
| 142 |
static void |
| 143 |
fd_event (int fd, int events) |
| 144 |
{ |
| 145 |
ANFD *anfd = anfds + fd; |
| 146 |
struct ev_io *w; |
| 147 |
|
| 148 |
for (w = anfd->head; w; w = w->next) |
| 149 |
{ |
| 150 |
int ev = w->events & events; |
| 151 |
|
| 152 |
if (ev) |
| 153 |
event ((W)w, ev); |
| 154 |
} |
| 155 |
} |
| 156 |
|
| 157 |
static void |
| 158 |
queue_events (W *events, int eventcnt, int type) |
| 159 |
{ |
| 160 |
int i; |
| 161 |
|
| 162 |
for (i = 0; i < eventcnt; ++i) |
| 163 |
event (events [i], type); |
| 164 |
} |
| 165 |
|
| 166 |
/*****************************************************************************/ |
| 167 |
|
| 168 |
static struct ev_timer **atimers; |
| 169 |
static int atimermax, atimercnt; |
| 170 |
|
| 171 |
static struct ev_timer **rtimers; |
| 172 |
static int rtimermax, rtimercnt; |
| 173 |
|
| 174 |
static void |
| 175 |
upheap (struct ev_timer **timers, int k) |
| 176 |
{ |
| 177 |
struct ev_timer *w = timers [k]; |
| 178 |
|
| 179 |
while (k && timers [k >> 1]->at > w->at) |
| 180 |
{ |
| 181 |
timers [k] = timers [k >> 1]; |
| 182 |
timers [k]->active = k + 1; |
| 183 |
k >>= 1; |
| 184 |
} |
| 185 |
|
| 186 |
timers [k] = w; |
| 187 |
timers [k]->active = k + 1; |
| 188 |
|
| 189 |
} |
| 190 |
|
| 191 |
static void |
| 192 |
downheap (struct ev_timer **timers, int N, int k) |
| 193 |
{ |
| 194 |
struct ev_timer *w = timers [k]; |
| 195 |
|
| 196 |
while (k < (N >> 1)) |
| 197 |
{ |
| 198 |
int j = k << 1; |
| 199 |
|
| 200 |
if (j + 1 < N && timers [j]->at > timers [j + 1]->at) |
| 201 |
++j; |
| 202 |
|
| 203 |
if (w->at <= timers [j]->at) |
| 204 |
break; |
| 205 |
|
| 206 |
timers [k] = timers [j]; |
| 207 |
timers [k]->active = k + 1; |
| 208 |
k = j; |
| 209 |
} |
| 210 |
|
| 211 |
timers [k] = w; |
| 212 |
timers [k]->active = k + 1; |
| 213 |
} |
| 214 |
|
| 215 |
/*****************************************************************************/ |
| 216 |
|
| 217 |
typedef struct |
| 218 |
{ |
| 219 |
struct ev_signal *head; |
| 220 |
sig_atomic_t gotsig; |
| 221 |
} ANSIG; |
| 222 |
|
| 223 |
static ANSIG *signals; |
| 224 |
static int signalmax; |
| 225 |
|
| 226 |
static int sigpipe [2]; |
| 227 |
static sig_atomic_t gotsig; |
| 228 |
static struct ev_io sigev; |
| 229 |
|
| 230 |
static void |
| 231 |
signals_init (ANSIG *base, int count) |
| 232 |
{ |
| 233 |
while (count--) |
| 234 |
{ |
| 235 |
base->head = 0; |
| 236 |
base->gotsig = 0; |
| 237 |
++base; |
| 238 |
} |
| 239 |
} |
| 240 |
|
| 241 |
static void |
| 242 |
sighandler (int signum) |
| 243 |
{ |
| 244 |
signals [signum - 1].gotsig = 1; |
| 245 |
|
| 246 |
if (!gotsig) |
| 247 |
{ |
| 248 |
gotsig = 1; |
| 249 |
write (sigpipe [1], &gotsig, 1); |
| 250 |
} |
| 251 |
} |
| 252 |
|
| 253 |
static void |
| 254 |
sigcb (struct ev_io *iow, int revents) |
| 255 |
{ |
| 256 |
struct ev_signal *w; |
| 257 |
int sig; |
| 258 |
|
| 259 |
gotsig = 0; |
| 260 |
read (sigpipe [0], &revents, 1); |
| 261 |
|
| 262 |
for (sig = signalmax; sig--; ) |
| 263 |
if (signals [sig].gotsig) |
| 264 |
{ |
| 265 |
signals [sig].gotsig = 0; |
| 266 |
|
| 267 |
for (w = signals [sig].head; w; w = w->next) |
| 268 |
event ((W)w, EV_SIGNAL); |
| 269 |
} |
| 270 |
} |
| 271 |
|
| 272 |
static void |
| 273 |
siginit (void) |
| 274 |
{ |
| 275 |
fcntl (sigpipe [0], F_SETFD, FD_CLOEXEC); |
| 276 |
fcntl (sigpipe [1], F_SETFD, FD_CLOEXEC); |
| 277 |
|
| 278 |
/* rather than sort out wether we really need nb, set it */ |
| 279 |
fcntl (sigpipe [0], F_SETFL, O_NONBLOCK); |
| 280 |
fcntl (sigpipe [1], F_SETFL, O_NONBLOCK); |
| 281 |
|
| 282 |
evio_set (&sigev, sigpipe [0], EV_READ); |
| 283 |
evio_start (&sigev); |
| 284 |
} |
| 285 |
|
| 286 |
/*****************************************************************************/ |
| 287 |
|
| 288 |
static struct ev_idle **idles; |
| 289 |
static int idlemax, idlecnt; |
| 290 |
|
| 291 |
static struct ev_check **checks; |
| 292 |
static int checkmax, checkcnt; |
| 293 |
|
| 294 |
/*****************************************************************************/ |
| 295 |
|
| 296 |
#if HAVE_EPOLL |
| 297 |
# include "ev_epoll.c" |
| 298 |
#endif |
| 299 |
#if HAVE_SELECT |
| 300 |
# include "ev_select.c" |
| 301 |
#endif |
| 302 |
|
| 303 |
int ev_init (int flags) |
| 304 |
{ |
| 305 |
#if HAVE_MONOTONIC |
| 306 |
{ |
| 307 |
struct timespec ts; |
| 308 |
if (!clock_gettime (CLOCK_MONOTONIC, &ts)) |
| 309 |
have_monotonic = 1; |
| 310 |
} |
| 311 |
#endif |
| 312 |
|
| 313 |
ev_now = ev_time (); |
| 314 |
now = get_clock (); |
| 315 |
diff = ev_now - now; |
| 316 |
|
| 317 |
if (pipe (sigpipe)) |
| 318 |
return 0; |
| 319 |
|
| 320 |
ev_method = EVMETHOD_NONE; |
| 321 |
#if HAVE_EPOLL |
| 322 |
if (ev_method == EVMETHOD_NONE) epoll_init (flags); |
| 323 |
#endif |
| 324 |
#if HAVE_SELECT |
| 325 |
if (ev_method == EVMETHOD_NONE) select_init (flags); |
| 326 |
#endif |
| 327 |
|
| 328 |
if (ev_method) |
| 329 |
{ |
| 330 |
evw_init (&sigev, sigcb, 0); |
| 331 |
siginit (); |
| 332 |
} |
| 333 |
|
| 334 |
return ev_method; |
| 335 |
} |
| 336 |
|
| 337 |
/*****************************************************************************/ |
| 338 |
|
| 339 |
void ev_prefork (void) |
| 340 |
{ |
| 341 |
/* nop */ |
| 342 |
} |
| 343 |
|
| 344 |
void ev_postfork_parent (void) |
| 345 |
{ |
| 346 |
/* nop */ |
| 347 |
} |
| 348 |
|
| 349 |
void ev_postfork_child (void) |
| 350 |
{ |
| 351 |
#if HAVE_EPOLL |
| 352 |
if (ev_method == EVMETHOD_EPOLL) |
| 353 |
epoll_postfork_child (); |
| 354 |
#endif |
| 355 |
|
| 356 |
evio_stop (&sigev); |
| 357 |
close (sigpipe [0]); |
| 358 |
close (sigpipe [1]); |
| 359 |
pipe (sigpipe); |
| 360 |
siginit (); |
| 361 |
} |
| 362 |
|
| 363 |
/*****************************************************************************/ |
| 364 |
|
| 365 |
static void |
| 366 |
fd_reify (void) |
| 367 |
{ |
| 368 |
int i; |
| 369 |
|
| 370 |
for (i = 0; i < fdchangecnt; ++i) |
| 371 |
{ |
| 372 |
int fd = fdchanges [i]; |
| 373 |
ANFD *anfd = anfds + fd; |
| 374 |
struct ev_io *w; |
| 375 |
|
| 376 |
int wev = 0; |
| 377 |
|
| 378 |
for (w = anfd->head; w; w = w->next) |
| 379 |
wev |= w->events; |
| 380 |
|
| 381 |
if (anfd->wev != wev) |
| 382 |
{ |
| 383 |
method_modify (fd, anfd->wev, wev); |
| 384 |
anfd->wev = wev; |
| 385 |
} |
| 386 |
} |
| 387 |
|
| 388 |
fdchangecnt = 0; |
| 389 |
} |
| 390 |
|
| 391 |
static void |
| 392 |
call_pending () |
| 393 |
{ |
| 394 |
int i; |
| 395 |
|
| 396 |
for (i = 0; i < pendingcnt; ++i) |
| 397 |
{ |
| 398 |
ANPENDING *p = pendings + i; |
| 399 |
|
| 400 |
if (p->w) |
| 401 |
{ |
| 402 |
p->w->pending = 0; |
| 403 |
p->w->cb (p->w, p->events); |
| 404 |
} |
| 405 |
} |
| 406 |
|
| 407 |
pendingcnt = 0; |
| 408 |
} |
| 409 |
|
| 410 |
static void |
| 411 |
timers_reify (struct ev_timer **timers, int timercnt, ev_tstamp now) |
| 412 |
{ |
| 413 |
while (timercnt && timers [0]->at <= now) |
| 414 |
{ |
| 415 |
struct ev_timer *w = timers [0]; |
| 416 |
|
| 417 |
/* first reschedule or stop timer */ |
| 418 |
if (w->repeat) |
| 419 |
{ |
| 420 |
if (w->is_abs) |
| 421 |
w->at += floor ((now - w->at) / w->repeat + 1.) * w->repeat; |
| 422 |
else |
| 423 |
w->at = now + w->repeat; |
| 424 |
|
| 425 |
assert (w->at > now); |
| 426 |
|
| 427 |
downheap (timers, timercnt, 0); |
| 428 |
} |
| 429 |
else |
| 430 |
{ |
| 431 |
evtimer_stop (w); /* nonrepeating: stop timer */ |
| 432 |
--timercnt; /* maybe pass by reference instead? */ |
| 433 |
} |
| 434 |
|
| 435 |
event ((W)w, EV_TIMEOUT); |
| 436 |
} |
| 437 |
} |
| 438 |
|
| 439 |
static void |
| 440 |
time_update () |
| 441 |
{ |
| 442 |
int i; |
| 443 |
ev_now = ev_time (); |
| 444 |
|
| 445 |
if (have_monotonic) |
| 446 |
{ |
| 447 |
ev_tstamp odiff = diff; |
| 448 |
|
| 449 |
/* detecting time jumps is much more difficult */ |
| 450 |
for (i = 2; --i; ) /* loop a few times, before making important decisions */ |
| 451 |
{ |
| 452 |
now = get_clock (); |
| 453 |
diff = ev_now - now; |
| 454 |
|
| 455 |
if (fabs (odiff - diff) < MIN_TIMEJUMP) |
| 456 |
return; /* all is well */ |
| 457 |
|
| 458 |
ev_now = ev_time (); |
| 459 |
} |
| 460 |
|
| 461 |
/* time jump detected, reschedule atimers */ |
| 462 |
for (i = 0; i < atimercnt; ++i) |
| 463 |
{ |
| 464 |
struct ev_timer *w = atimers [i]; |
| 465 |
w->at += ceil ((ev_now - w->at) / w->repeat + 1.) * w->repeat; |
| 466 |
} |
| 467 |
} |
| 468 |
else |
| 469 |
{ |
| 470 |
if (now > ev_now || now < ev_now - MAX_BLOCKTIME - MIN_TIMEJUMP) |
| 471 |
/* time jump detected, adjust rtimers */ |
| 472 |
for (i = 0; i < rtimercnt; ++i) |
| 473 |
rtimers [i]->at += ev_now - now; |
| 474 |
|
| 475 |
now = ev_now; |
| 476 |
} |
| 477 |
} |
| 478 |
|
| 479 |
int ev_loop_done; |
| 480 |
|
| 481 |
void ev_loop (int flags) |
| 482 |
{ |
| 483 |
double block; |
| 484 |
ev_loop_done = flags & EVLOOP_ONESHOT; |
| 485 |
|
| 486 |
if (checkcnt) |
| 487 |
{ |
| 488 |
queue_events ((W *)checks, checkcnt, EV_CHECK); |
| 489 |
call_pending (); |
| 490 |
} |
| 491 |
|
| 492 |
do |
| 493 |
{ |
| 494 |
/* update fd-related kernel structures */ |
| 495 |
fd_reify (); |
| 496 |
|
| 497 |
/* calculate blocking time */ |
| 498 |
if (flags & EVLOOP_NONBLOCK || idlecnt) |
| 499 |
block = 0.; |
| 500 |
else |
| 501 |
{ |
| 502 |
block = MAX_BLOCKTIME; |
| 503 |
|
| 504 |
if (rtimercnt) |
| 505 |
{ |
| 506 |
ev_tstamp to = rtimers [0]->at - get_clock () + method_fudge; |
| 507 |
if (block > to) block = to; |
| 508 |
} |
| 509 |
|
| 510 |
if (atimercnt) |
| 511 |
{ |
| 512 |
ev_tstamp to = atimers [0]->at - ev_time () + method_fudge; |
| 513 |
if (block > to) block = to; |
| 514 |
} |
| 515 |
|
| 516 |
if (block < 0.) block = 0.; |
| 517 |
} |
| 518 |
|
| 519 |
method_poll (block); |
| 520 |
|
| 521 |
/* update ev_now, do magic */ |
| 522 |
time_update (); |
| 523 |
|
| 524 |
/* queue pending timers and reschedule them */ |
| 525 |
/* absolute timers first */ |
| 526 |
timers_reify (atimers, atimercnt, ev_now); |
| 527 |
/* relative timers second */ |
| 528 |
timers_reify (rtimers, rtimercnt, now); |
| 529 |
|
| 530 |
/* queue idle watchers unless io or timers are pending */ |
| 531 |
if (!pendingcnt) |
| 532 |
queue_events ((W *)idles, idlecnt, EV_IDLE); |
| 533 |
|
| 534 |
/* queue check and possibly idle watchers */ |
| 535 |
queue_events ((W *)checks, checkcnt, EV_CHECK); |
| 536 |
|
| 537 |
call_pending (); |
| 538 |
} |
| 539 |
while (!ev_loop_done); |
| 540 |
} |
| 541 |
|
| 542 |
/*****************************************************************************/ |
| 543 |
|
| 544 |
static void |
| 545 |
wlist_add (WL *head, WL elem) |
| 546 |
{ |
| 547 |
elem->next = *head; |
| 548 |
*head = elem; |
| 549 |
} |
| 550 |
|
| 551 |
static void |
| 552 |
wlist_del (WL *head, WL elem) |
| 553 |
{ |
| 554 |
while (*head) |
| 555 |
{ |
| 556 |
if (*head == elem) |
| 557 |
{ |
| 558 |
*head = elem->next; |
| 559 |
return; |
| 560 |
} |
| 561 |
|
| 562 |
head = &(*head)->next; |
| 563 |
} |
| 564 |
} |
| 565 |
|
| 566 |
static void |
| 567 |
ev_start (W w, int active) |
| 568 |
{ |
| 569 |
w->pending = 0; |
| 570 |
w->active = active; |
| 571 |
} |
| 572 |
|
| 573 |
static void |
| 574 |
ev_stop (W w) |
| 575 |
{ |
| 576 |
if (w->pending) |
| 577 |
pendings [w->pending - 1].w = 0; |
| 578 |
|
| 579 |
w->active = 0; |
| 580 |
} |
| 581 |
|
| 582 |
/*****************************************************************************/ |
| 583 |
|
| 584 |
void |
| 585 |
evio_start (struct ev_io *w) |
| 586 |
{ |
| 587 |
if (ev_is_active (w)) |
| 588 |
return; |
| 589 |
|
| 590 |
int fd = w->fd; |
| 591 |
|
| 592 |
ev_start ((W)w, 1); |
| 593 |
array_needsize (anfds, anfdmax, fd + 1, anfds_init); |
| 594 |
wlist_add ((WL *)&anfds[fd].head, (WL)w); |
| 595 |
|
| 596 |
++fdchangecnt; |
| 597 |
array_needsize (fdchanges, fdchangemax, fdchangecnt, ); |
| 598 |
fdchanges [fdchangecnt - 1] = fd; |
| 599 |
} |
| 600 |
|
| 601 |
void |
| 602 |
evio_stop (struct ev_io *w) |
| 603 |
{ |
| 604 |
if (!ev_is_active (w)) |
| 605 |
return; |
| 606 |
|
| 607 |
wlist_del ((WL *)&anfds[w->fd].head, (WL)w); |
| 608 |
ev_stop ((W)w); |
| 609 |
|
| 610 |
++fdchangecnt; |
| 611 |
array_needsize (fdchanges, fdchangemax, fdchangecnt, ); |
| 612 |
fdchanges [fdchangecnt - 1] = w->fd; |
| 613 |
} |
| 614 |
|
| 615 |
void |
| 616 |
evtimer_start (struct ev_timer *w) |
| 617 |
{ |
| 618 |
if (ev_is_active (w)) |
| 619 |
return; |
| 620 |
|
| 621 |
if (w->is_abs) |
| 622 |
{ |
| 623 |
/* this formula differs from the one in timer_reify becuse we do not round up */ |
| 624 |
if (w->repeat) |
| 625 |
w->at += ceil ((ev_now - w->at) / w->repeat) * w->repeat; |
| 626 |
|
| 627 |
ev_start ((W)w, ++atimercnt); |
| 628 |
array_needsize (atimers, atimermax, atimercnt, ); |
| 629 |
atimers [atimercnt - 1] = w; |
| 630 |
upheap (atimers, atimercnt - 1); |
| 631 |
} |
| 632 |
else |
| 633 |
{ |
| 634 |
w->at += now; |
| 635 |
|
| 636 |
ev_start ((W)w, ++rtimercnt); |
| 637 |
array_needsize (rtimers, rtimermax, rtimercnt, ); |
| 638 |
rtimers [rtimercnt - 1] = w; |
| 639 |
upheap (rtimers, rtimercnt - 1); |
| 640 |
} |
| 641 |
|
| 642 |
} |
| 643 |
|
| 644 |
void |
| 645 |
evtimer_stop (struct ev_timer *w) |
| 646 |
{ |
| 647 |
if (!ev_is_active (w)) |
| 648 |
return; |
| 649 |
|
| 650 |
if (w->is_abs) |
| 651 |
{ |
| 652 |
if (w->active < atimercnt--) |
| 653 |
{ |
| 654 |
atimers [w->active - 1] = atimers [atimercnt]; |
| 655 |
downheap (atimers, atimercnt, w->active - 1); |
| 656 |
} |
| 657 |
} |
| 658 |
else |
| 659 |
{ |
| 660 |
if (w->active < rtimercnt--) |
| 661 |
{ |
| 662 |
rtimers [w->active - 1] = rtimers [rtimercnt]; |
| 663 |
downheap (rtimers, rtimercnt, w->active - 1); |
| 664 |
} |
| 665 |
} |
| 666 |
|
| 667 |
ev_stop ((W)w); |
| 668 |
} |
| 669 |
|
| 670 |
void |
| 671 |
evsignal_start (struct ev_signal *w) |
| 672 |
{ |
| 673 |
if (ev_is_active (w)) |
| 674 |
return; |
| 675 |
|
| 676 |
ev_start ((W)w, 1); |
| 677 |
array_needsize (signals, signalmax, w->signum, signals_init); |
| 678 |
wlist_add ((WL *)&signals [w->signum - 1].head, (WL)w); |
| 679 |
|
| 680 |
if (!w->next) |
| 681 |
{ |
| 682 |
struct sigaction sa; |
| 683 |
sa.sa_handler = sighandler; |
| 684 |
sigfillset (&sa.sa_mask); |
| 685 |
sa.sa_flags = 0; |
| 686 |
sigaction (w->signum, &sa, 0); |
| 687 |
} |
| 688 |
} |
| 689 |
|
| 690 |
void |
| 691 |
evsignal_stop (struct ev_signal *w) |
| 692 |
{ |
| 693 |
if (!ev_is_active (w)) |
| 694 |
return; |
| 695 |
|
| 696 |
wlist_del ((WL *)&signals [w->signum - 1].head, (WL)w); |
| 697 |
ev_stop ((W)w); |
| 698 |
|
| 699 |
if (!signals [w->signum - 1].head) |
| 700 |
signal (w->signum, SIG_DFL); |
| 701 |
} |
| 702 |
|
| 703 |
void evidle_start (struct ev_idle *w) |
| 704 |
{ |
| 705 |
if (ev_is_active (w)) |
| 706 |
return; |
| 707 |
|
| 708 |
ev_start ((W)w, ++idlecnt); |
| 709 |
array_needsize (idles, idlemax, idlecnt, ); |
| 710 |
idles [idlecnt - 1] = w; |
| 711 |
} |
| 712 |
|
| 713 |
void evidle_stop (struct ev_idle *w) |
| 714 |
{ |
| 715 |
idles [w->active - 1] = idles [--idlecnt]; |
| 716 |
ev_stop ((W)w); |
| 717 |
} |
| 718 |
|
| 719 |
void evcheck_start (struct ev_check *w) |
| 720 |
{ |
| 721 |
if (ev_is_active (w)) |
| 722 |
return; |
| 723 |
|
| 724 |
ev_start ((W)w, ++checkcnt); |
| 725 |
array_needsize (checks, checkmax, checkcnt, ); |
| 726 |
checks [checkcnt - 1] = w; |
| 727 |
} |
| 728 |
|
| 729 |
void evcheck_stop (struct ev_check *w) |
| 730 |
{ |
| 731 |
checks [w->active - 1] = checks [--checkcnt]; |
| 732 |
ev_stop ((W)w); |
| 733 |
} |
| 734 |
|
| 735 |
/*****************************************************************************/ |
| 736 |
|
| 737 |
#if 0 |
| 738 |
|
| 739 |
static void |
| 740 |
sin_cb (struct ev_io *w, int revents) |
| 741 |
{ |
| 742 |
fprintf (stderr, "sin %d, revents %d\n", w->fd, revents); |
| 743 |
} |
| 744 |
|
| 745 |
static void |
| 746 |
ocb (struct ev_timer *w, int revents) |
| 747 |
{ |
| 748 |
//fprintf (stderr, "timer %f,%f (%x) (%f) d%p\n", w->at, w->repeat, revents, w->at - ev_time (), w->data); |
| 749 |
evtimer_stop (w); |
| 750 |
evtimer_start (w); |
| 751 |
} |
| 752 |
|
| 753 |
static void |
| 754 |
scb (struct ev_signal *w, int revents) |
| 755 |
{ |
| 756 |
fprintf (stderr, "signal %x,%d\n", revents, w->signum); |
| 757 |
} |
| 758 |
|
| 759 |
static void |
| 760 |
gcb (struct ev_signal *w, int revents) |
| 761 |
{ |
| 762 |
fprintf (stderr, "generic %x\n", revents); |
| 763 |
} |
| 764 |
|
| 765 |
int main (void) |
| 766 |
{ |
| 767 |
struct ev_io sin; |
| 768 |
|
| 769 |
ev_init (0); |
| 770 |
|
| 771 |
evw_init (&sin, sin_cb, 55); |
| 772 |
evio_set (&sin, 0, EV_READ); |
| 773 |
evio_start (&sin); |
| 774 |
|
| 775 |
struct ev_timer t[10000]; |
| 776 |
|
| 777 |
#if 0 |
| 778 |
int i; |
| 779 |
for (i = 0; i < 10000; ++i) |
| 780 |
{ |
| 781 |
struct ev_timer *w = t + i; |
| 782 |
evw_init (w, ocb, i); |
| 783 |
evtimer_set_abs (w, drand48 (), 0.99775533); |
| 784 |
evtimer_start (w); |
| 785 |
if (drand48 () < 0.5) |
| 786 |
evtimer_stop (w); |
| 787 |
} |
| 788 |
#endif |
| 789 |
|
| 790 |
struct ev_timer t1; |
| 791 |
evw_init (&t1, ocb, 0); |
| 792 |
evtimer_set_abs (&t1, 5, 10); |
| 793 |
evtimer_start (&t1); |
| 794 |
|
| 795 |
struct ev_signal sig; |
| 796 |
evw_init (&sig, scb, 65535); |
| 797 |
evsignal_set (&sig, SIGQUIT); |
| 798 |
evsignal_start (&sig); |
| 799 |
|
| 800 |
struct ev_check cw; |
| 801 |
evw_init (&cw, gcb, 0); |
| 802 |
evcheck_start (&cw); |
| 803 |
|
| 804 |
struct ev_idle iw; |
| 805 |
evw_init (&iw, gcb, 0); |
| 806 |
evidle_start (&iw); |
| 807 |
|
| 808 |
ev_loop (0); |
| 809 |
|
| 810 |
return 0; |
| 811 |
} |
| 812 |
|
| 813 |
#endif |
| 814 |
|
| 815 |
|
| 816 |
|
| 817 |
|
