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Comparing libev/ev.c (file contents):
Revision 1.140 by root, Mon Nov 26 19:49:36 2007 UTC vs.
Revision 1.151 by root, Tue Nov 27 19:59:08 2007 UTC

… …
156 156
157#ifndef EV_USE_PORT 157#ifndef EV_USE_PORT
158# define EV_USE_PORT 0 158# define EV_USE_PORT 0
159#endif 159#endif
160 160
161#ifndef EV_PID_HASHSIZE
162# if EV_MINIMAL
163# define EV_PID_HASHSIZE 1
164# else
165# define EV_PID_HASHSIZE 16
166# endif
167#endif
168
161/**/ 169/**/
162 170
163#ifndef CLOCK_MONOTONIC 171#ifndef CLOCK_MONOTONIC
164# undef EV_USE_MONOTONIC 172# undef EV_USE_MONOTONIC
165# define EV_USE_MONOTONIC 0 173# define EV_USE_MONOTONIC 0
… …
176 184
177/**/ 185/**/
178 186
179#define MIN_TIMEJUMP 1. /* minimum timejump that gets detected (if monotonic clock available) */ 187#define MIN_TIMEJUMP 1. /* minimum timejump that gets detected (if monotonic clock available) */
180#define MAX_BLOCKTIME 59.743 /* never wait longer than this time (to detect time jumps) */ 188#define MAX_BLOCKTIME 59.743 /* never wait longer than this time (to detect time jumps) */
181#define PID_HASHSIZE 16 /* size of pid hash table, must be power of two */
182/*#define CLEANUP_INTERVAL (MAX_BLOCKTIME * 5.) /* how often to try to free memory and re-check fds */ 189/*#define CLEANUP_INTERVAL (MAX_BLOCKTIME * 5.) /* how often to try to free memory and re-check fds */
183 190
184#ifdef EV_H 191#ifdef EV_H
185# include EV_H 192# include EV_H
186#else 193#else
… …
198# define inline_speed static inline 205# define inline_speed static inline
199# endif 206# endif
200#else 207#else
201# define expect(expr,value) (expr) 208# define expect(expr,value) (expr)
202# define inline_speed static 209# define inline_speed static
203# define inline_minimal static 210# define inline_size static
204# define noinline 211# define noinline
205#endif 212#endif
206 213
207#define expect_false(expr) expect ((expr) != 0, 0) 214#define expect_false(expr) expect ((expr) != 0, 0)
208#define expect_true(expr) expect ((expr) != 0, 1) 215#define expect_true(expr) expect ((expr) != 0, 1)
… …
225 232
226/*****************************************************************************/ 233/*****************************************************************************/
227 234
228static void (*syserr_cb)(const char *msg); 235static void (*syserr_cb)(const char *msg);
229 236
237void
230void ev_set_syserr_cb (void (*cb)(const char *msg)) 238ev_set_syserr_cb (void (*cb)(const char *msg))
231{ 239{
232 syserr_cb = cb; 240 syserr_cb = cb;
233} 241}
234 242
235static void 243static void noinline
236syserr (const char *msg) 244syserr (const char *msg)
237{ 245{
238 if (!msg) 246 if (!msg)
239 msg = "(libev) system error"; 247 msg = "(libev) system error";
240 248
… …
245 perror (msg); 253 perror (msg);
246 abort (); 254 abort ();
247 } 255 }
248} 256}
249 257
250static void *(*alloc)(void *ptr, long size); 258static void *(*alloc)(void *ptr, size_t size) = realloc;
251 259
260void
252void ev_set_allocator (void *(*cb)(void *ptr, long size)) 261ev_set_allocator (void *(*cb)(void *ptr, size_t size))
253{ 262{
254 alloc = cb; 263 alloc = cb;
255} 264}
256 265
257static void * 266inline_speed void *
258ev_realloc (void *ptr, long size) 267ev_realloc (void *ptr, size_t size)
259{ 268{
260 ptr = alloc ? alloc (ptr, size) : realloc (ptr, size); 269 ptr = alloc (ptr, size);
261 270
262 if (!ptr && size) 271 if (!ptr && size)
263 { 272 {
264 fprintf (stderr, "libev: cannot allocate %ld bytes, aborting.", size); 273 fprintf (stderr, "libev: cannot allocate %ld bytes, aborting.", (long)size);
265 abort (); 274 abort ();
266 } 275 }
267 276
268 return ptr; 277 return ptr;
269} 278}
… …
315 324
316#endif 325#endif
317 326
318/*****************************************************************************/ 327/*****************************************************************************/
319 328
320ev_tstamp noinline 329ev_tstamp
321ev_time (void) 330ev_time (void)
322{ 331{
323#if EV_USE_REALTIME 332#if EV_USE_REALTIME
324 struct timespec ts; 333 struct timespec ts;
325 clock_gettime (CLOCK_REALTIME, &ts); 334 clock_gettime (CLOCK_REALTIME, &ts);
… …
382#define array_free(stem, idx) \ 391#define array_free(stem, idx) \
383 ev_free (stem ## s idx); stem ## cnt idx = stem ## max idx = 0; 392 ev_free (stem ## s idx); stem ## cnt idx = stem ## max idx = 0;
384 393
385/*****************************************************************************/ 394/*****************************************************************************/
386 395
387void inline_size
388anfds_init (ANFD *base, int count)
389{
390 while (count--)
391 {
392 base->head = 0;
393 base->events = EV_NONE;
394 base->reify = 0;
395
396 ++base;
397 }
398}
399
400void noinline 396void noinline
401ev_feed_event (EV_P_ void *w, int revents) 397ev_feed_event (EV_P_ void *w, int revents)
402{ 398{
403 W w_ = (W)w; 399 W w_ = (W)w;
404 400
… …
412 array_needsize (ANPENDING, pendings [ABSPRI (w_)], pendingmax [ABSPRI (w_)], pendingcnt [ABSPRI (w_)], EMPTY2); 408 array_needsize (ANPENDING, pendings [ABSPRI (w_)], pendingmax [ABSPRI (w_)], pendingcnt [ABSPRI (w_)], EMPTY2);
413 pendings [ABSPRI (w_)][w_->pending - 1].w = w_; 409 pendings [ABSPRI (w_)][w_->pending - 1].w = w_;
414 pendings [ABSPRI (w_)][w_->pending - 1].events = revents; 410 pendings [ABSPRI (w_)][w_->pending - 1].events = revents;
415} 411}
416 412
417static void 413void inline_size
418queue_events (EV_P_ W *events, int eventcnt, int type) 414queue_events (EV_P_ W *events, int eventcnt, int type)
419{ 415{
420 int i; 416 int i;
421 417
422 for (i = 0; i < eventcnt; ++i) 418 for (i = 0; i < eventcnt; ++i)
423 ev_feed_event (EV_A_ events [i], type); 419 ev_feed_event (EV_A_ events [i], type);
424} 420}
425 421
422/*****************************************************************************/
423
424void inline_size
425anfds_init (ANFD *base, int count)
426{
427 while (count--)
428 {
429 base->head = 0;
430 base->events = EV_NONE;
431 base->reify = 0;
432
433 ++base;
434 }
435}
436
426void inline_speed 437void inline_speed
427fd_event (EV_P_ int fd, int revents) 438fd_event (EV_P_ int fd, int revents)
428{ 439{
429 ANFD *anfd = anfds + fd; 440 ANFD *anfd = anfds + fd;
430 ev_io *w; 441 ev_io *w;
… …
441void 452void
442ev_feed_fd_event (EV_P_ int fd, int revents) 453ev_feed_fd_event (EV_P_ int fd, int revents)
443{ 454{
444 fd_event (EV_A_ fd, revents); 455 fd_event (EV_A_ fd, revents);
445} 456}
446
447/*****************************************************************************/
448 457
449void inline_size 458void inline_size
450fd_reify (EV_P) 459fd_reify (EV_P)
451{ 460{
452 int i; 461 int i;
… …
707 ev_unref (EV_A); /* child watcher should not keep loop alive */ 716 ev_unref (EV_A); /* child watcher should not keep loop alive */
708} 717}
709 718
710/*****************************************************************************/ 719/*****************************************************************************/
711 720
712static ev_child *childs [PID_HASHSIZE]; 721static ev_child *childs [EV_PID_HASHSIZE];
713 722
714#ifndef _WIN32 723#ifndef _WIN32
715 724
716static ev_signal childev; 725static ev_signal childev;
717
718#ifndef WCONTINUED
719# define WCONTINUED 0
720#endif
721 726
722void inline_speed 727void inline_speed
723child_reap (EV_P_ ev_signal *sw, int chain, int pid, int status) 728child_reap (EV_P_ ev_signal *sw, int chain, int pid, int status)
724{ 729{
725 ev_child *w; 730 ev_child *w;
726 731
727 for (w = (ev_child *)childs [chain & (PID_HASHSIZE - 1)]; w; w = (ev_child *)((WL)w)->next) 732 for (w = (ev_child *)childs [chain & (EV_PID_HASHSIZE - 1)]; w; w = (ev_child *)((WL)w)->next)
728 if (w->pid == pid || !w->pid) 733 if (w->pid == pid || !w->pid)
729 { 734 {
730 ev_priority (w) = ev_priority (sw); /* need to do it *now* */ 735 ev_priority (w) = ev_priority (sw); /* need to do it *now* */
731 w->rpid = pid; 736 w->rpid = pid;
732 w->rstatus = status; 737 w->rstatus = status;
733 ev_feed_event (EV_A_ (W)w, EV_CHILD); 738 ev_feed_event (EV_A_ (W)w, EV_CHILD);
734 } 739 }
735} 740}
736 741
742#ifndef WCONTINUED
743# define WCONTINUED 0
744#endif
745
737static void 746static void
738childcb (EV_P_ ev_signal *sw, int revents) 747childcb (EV_P_ ev_signal *sw, int revents)
739{ 748{
740 int pid, status; 749 int pid, status;
741 750
751 /* some systems define WCONTINUED but then fail to support it (linux 2.4) */
742 if (0 < (pid = waitpid (-1, &status, WNOHANG | WUNTRACED | WCONTINUED))) 752 if (0 >= (pid = waitpid (-1, &status, WNOHANG | WUNTRACED | WCONTINUED)))
743 { 753 if (!WCONTINUED
754 || errno != EINVAL
755 || 0 >= (pid = waitpid (-1, &status, WNOHANG | WUNTRACED)))
756 return;
757
744 /* make sure we are called again until all childs have been reaped */ 758 /* make sure we are called again until all childs have been reaped */
745 /* we need to do it this way so that the callback gets called before we continue */ 759 /* we need to do it this way so that the callback gets called before we continue */
746 ev_feed_event (EV_A_ (W)sw, EV_SIGNAL); 760 ev_feed_event (EV_A_ (W)sw, EV_SIGNAL);
747 761
748 child_reap (EV_A_ sw, pid, pid, status); 762 child_reap (EV_A_ sw, pid, pid, status);
763 if (EV_PID_HASHSIZE > 1)
749 child_reap (EV_A_ sw, 0, pid, status); /* this might trigger a watcher twice, but feed_event catches that */ 764 child_reap (EV_A_ sw, 0, pid, status); /* this might trigger a watcher twice, but feed_event catches that */
750 }
751} 765}
752 766
753#endif 767#endif
754 768
755/*****************************************************************************/ 769/*****************************************************************************/
… …
838ev_backend (EV_P) 852ev_backend (EV_P)
839{ 853{
840 return backend; 854 return backend;
841} 855}
842 856
843static void 857static void noinline
844loop_init (EV_P_ unsigned int flags) 858loop_init (EV_P_ unsigned int flags)
845{ 859{
846 if (!backend) 860 if (!backend)
847 { 861 {
848#if EV_USE_MONOTONIC 862#if EV_USE_MONOTONIC
… …
886 ev_init (&sigev, sigcb); 900 ev_init (&sigev, sigcb);
887 ev_set_priority (&sigev, EV_MAXPRI); 901 ev_set_priority (&sigev, EV_MAXPRI);
888 } 902 }
889} 903}
890 904
891static void 905static void noinline
892loop_destroy (EV_P) 906loop_destroy (EV_P)
893{ 907{
894 int i; 908 int i;
895 909
896#if EV_USE_PORT 910#if EV_USE_PORT
… …
923 array_free (check, EMPTY0); 937 array_free (check, EMPTY0);
924 938
925 backend = 0; 939 backend = 0;
926} 940}
927 941
928static void 942void inline_size
929loop_fork (EV_P) 943loop_fork (EV_P)
930{ 944{
931#if EV_USE_PORT 945#if EV_USE_PORT
932 if (backend == EVBACKEND_PORT ) port_fork (EV_A); 946 if (backend == EVBACKEND_PORT ) port_fork (EV_A);
933#endif 947#endif
… …
1083 { 1097 {
1084 ANPENDING *p = pendings [pri] + --pendingcnt [pri]; 1098 ANPENDING *p = pendings [pri] + --pendingcnt [pri];
1085 1099
1086 if (expect_true (p->w)) 1100 if (expect_true (p->w))
1087 { 1101 {
1088 assert (("non-pending watcher on pending list", p->w->pending)); 1102 /*assert (("non-pending watcher on pending list", p->w->pending));*/
1089 1103
1090 p->w->pending = 0; 1104 p->w->pending = 0;
1091 EV_CB_INVOKE (p->w, p->events); 1105 EV_CB_INVOKE (p->w, p->events);
1092 } 1106 }
1093 } 1107 }
… …
1098{ 1112{
1099 while (timercnt && ((WT)timers [0])->at <= mn_now) 1113 while (timercnt && ((WT)timers [0])->at <= mn_now)
1100 { 1114 {
1101 ev_timer *w = timers [0]; 1115 ev_timer *w = timers [0];
1102 1116
1103 assert (("inactive timer on timer heap detected", ev_is_active (w))); 1117 /*assert (("inactive timer on timer heap detected", ev_is_active (w)));*/
1104 1118
1105 /* first reschedule or stop timer */ 1119 /* first reschedule or stop timer */
1106 if (w->repeat) 1120 if (w->repeat)
1107 { 1121 {
1108 assert (("negative ev_timer repeat value found while processing timers", w->repeat > 0.)); 1122 assert (("negative ev_timer repeat value found while processing timers", w->repeat > 0.));
… …
1126{ 1140{
1127 while (periodiccnt && ((WT)periodics [0])->at <= ev_rt_now) 1141 while (periodiccnt && ((WT)periodics [0])->at <= ev_rt_now)
1128 { 1142 {
1129 ev_periodic *w = periodics [0]; 1143 ev_periodic *w = periodics [0];
1130 1144
1131 assert (("inactive timer on periodic heap detected", ev_is_active (w))); 1145 /*assert (("inactive timer on periodic heap detected", ev_is_active (w)));*/
1132 1146
1133 /* first reschedule or stop timer */ 1147 /* first reschedule or stop timer */
1134 if (w->reschedule_cb) 1148 if (w->reschedule_cb)
1135 { 1149 {
1136 ((WT)w)->at = w->reschedule_cb (w, ev_rt_now + 0.0001); 1150 ((WT)w)->at = w->reschedule_cb (w, ev_rt_now + 0.0001);
… …
1270 ? EVUNLOOP_ONE 1284 ? EVUNLOOP_ONE
1271 : EVUNLOOP_CANCEL; 1285 : EVUNLOOP_CANCEL;
1272 1286
1273 while (activecnt) 1287 while (activecnt)
1274 { 1288 {
1289 /* we might have forked, so reify kernel state if necessary */
1290 #if EV_FORK_ENABLE
1291 if (expect_false (postfork))
1292 if (forkcnt)
1293 {
1294 queue_events (EV_A_ (W *)forks, forkcnt, EV_FORK);
1295 call_pending (EV_A);
1296 }
1297 #endif
1298
1275 /* queue check watchers (and execute them) */ 1299 /* queue check watchers (and execute them) */
1276 if (expect_false (preparecnt)) 1300 if (expect_false (preparecnt))
1277 { 1301 {
1278 queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE); 1302 queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE);
1279 call_pending (EV_A); 1303 call_pending (EV_A);
… …
1458 ev_start (EV_A_ (W)w, ++timercnt); 1482 ev_start (EV_A_ (W)w, ++timercnt);
1459 array_needsize (ev_timer *, timers, timermax, timercnt, EMPTY2); 1483 array_needsize (ev_timer *, timers, timermax, timercnt, EMPTY2);
1460 timers [timercnt - 1] = w; 1484 timers [timercnt - 1] = w;
1461 upheap ((WT *)timers, timercnt - 1); 1485 upheap ((WT *)timers, timercnt - 1);
1462 1486
1463 assert (("internal timer heap corruption", timers [((W)w)->active - 1] == w)); 1487 /*assert (("internal timer heap corruption", timers [((W)w)->active - 1] == w));*/
1464} 1488}
1465 1489
1466void 1490void
1467ev_timer_stop (EV_P_ ev_timer *w) 1491ev_timer_stop (EV_P_ ev_timer *w)
1468{ 1492{
… …
1470 if (expect_false (!ev_is_active (w))) 1494 if (expect_false (!ev_is_active (w)))
1471 return; 1495 return;
1472 1496
1473 assert (("internal timer heap corruption", timers [((W)w)->active - 1] == w)); 1497 assert (("internal timer heap corruption", timers [((W)w)->active - 1] == w));
1474 1498
1499 {
1500 int active = ((W)w)->active;
1501
1475 if (expect_true (((W)w)->active < timercnt--)) 1502 if (expect_true (--active < --timercnt))
1476 { 1503 {
1477 timers [((W)w)->active - 1] = timers [timercnt]; 1504 timers [active] = timers [timercnt];
1478 adjustheap ((WT *)timers, timercnt, ((W)w)->active - 1); 1505 adjustheap ((WT *)timers, timercnt, active);
1479 } 1506 }
1507 }
1480 1508
1481 ((WT)w)->at -= mn_now; 1509 ((WT)w)->at -= mn_now;
1482 1510
1483 ev_stop (EV_A_ (W)w); 1511 ev_stop (EV_A_ (W)w);
1484} 1512}
… …
1522 ev_start (EV_A_ (W)w, ++periodiccnt); 1550 ev_start (EV_A_ (W)w, ++periodiccnt);
1523 array_needsize (ev_periodic *, periodics, periodicmax, periodiccnt, EMPTY2); 1551 array_needsize (ev_periodic *, periodics, periodicmax, periodiccnt, EMPTY2);
1524 periodics [periodiccnt - 1] = w; 1552 periodics [periodiccnt - 1] = w;
1525 upheap ((WT *)periodics, periodiccnt - 1); 1553 upheap ((WT *)periodics, periodiccnt - 1);
1526 1554
1527 assert (("internal periodic heap corruption", periodics [((W)w)->active - 1] == w)); 1555 /*assert (("internal periodic heap corruption", periodics [((W)w)->active - 1] == w));*/
1528} 1556}
1529 1557
1530void 1558void
1531ev_periodic_stop (EV_P_ ev_periodic *w) 1559ev_periodic_stop (EV_P_ ev_periodic *w)
1532{ 1560{
… …
1534 if (expect_false (!ev_is_active (w))) 1562 if (expect_false (!ev_is_active (w)))
1535 return; 1563 return;
1536 1564
1537 assert (("internal periodic heap corruption", periodics [((W)w)->active - 1] == w)); 1565 assert (("internal periodic heap corruption", periodics [((W)w)->active - 1] == w));
1538 1566
1567 {
1568 int active = ((W)w)->active;
1569
1539 if (expect_true (((W)w)->active < periodiccnt--)) 1570 if (expect_true (--active < --periodiccnt))
1540 { 1571 {
1541 periodics [((W)w)->active - 1] = periodics [periodiccnt]; 1572 periodics [active] = periodics [periodiccnt];
1542 adjustheap ((WT *)periodics, periodiccnt, ((W)w)->active - 1); 1573 adjustheap ((WT *)periodics, periodiccnt, active);
1543 } 1574 }
1575 }
1544 1576
1545 ev_stop (EV_A_ (W)w); 1577 ev_stop (EV_A_ (W)w);
1546} 1578}
1547 1579
1548void 1580void
… …
1551 /* TODO: use adjustheap and recalculation */ 1583 /* TODO: use adjustheap and recalculation */
1552 ev_periodic_stop (EV_A_ w); 1584 ev_periodic_stop (EV_A_ w);
1553 ev_periodic_start (EV_A_ w); 1585 ev_periodic_start (EV_A_ w);
1554} 1586}
1555#endif 1587#endif
1556
1557void
1558ev_idle_start (EV_P_ ev_idle *w)
1559{
1560 if (expect_false (ev_is_active (w)))
1561 return;
1562
1563 ev_start (EV_A_ (W)w, ++idlecnt);
1564 array_needsize (ev_idle *, idles, idlemax, idlecnt, EMPTY2);
1565 idles [idlecnt - 1] = w;
1566}
1567
1568void
1569ev_idle_stop (EV_P_ ev_idle *w)
1570{
1571 ev_clear_pending (EV_A_ (W)w);
1572 if (expect_false (!ev_is_active (w)))
1573 return;
1574
1575 {
1576 int active = ((W)w)->active;
1577 idles [active - 1] = idles [--idlecnt];
1578 ((W)idles [active - 1])->active = active;
1579 }
1580
1581 ev_stop (EV_A_ (W)w);
1582}
1583
1584void
1585ev_prepare_start (EV_P_ ev_prepare *w)
1586{
1587 if (expect_false (ev_is_active (w)))
1588 return;
1589
1590 ev_start (EV_A_ (W)w, ++preparecnt);
1591 array_needsize (ev_prepare *, prepares, preparemax, preparecnt, EMPTY2);
1592 prepares [preparecnt - 1] = w;
1593}
1594
1595void
1596ev_prepare_stop (EV_P_ ev_prepare *w)
1597{
1598 ev_clear_pending (EV_A_ (W)w);
1599 if (expect_false (!ev_is_active (w)))
1600 return;
1601
1602 {
1603 int active = ((W)w)->active;
1604 prepares [active - 1] = prepares [--preparecnt];
1605 ((W)prepares [active - 1])->active = active;
1606 }
1607
1608 ev_stop (EV_A_ (W)w);
1609}
1610
1611void
1612ev_check_start (EV_P_ ev_check *w)
1613{
1614 if (expect_false (ev_is_active (w)))
1615 return;
1616
1617 ev_start (EV_A_ (W)w, ++checkcnt);
1618 array_needsize (ev_check *, checks, checkmax, checkcnt, EMPTY2);
1619 checks [checkcnt - 1] = w;
1620}
1621
1622void
1623ev_check_stop (EV_P_ ev_check *w)
1624{
1625 ev_clear_pending (EV_A_ (W)w);
1626 if (expect_false (!ev_is_active (w)))
1627 return;
1628
1629 {
1630 int active = ((W)w)->active;
1631 checks [active - 1] = checks [--checkcnt];
1632 ((W)checks [active - 1])->active = active;
1633 }
1634
1635 ev_stop (EV_A_ (W)w);
1636}
1637 1588
1638#ifndef SA_RESTART 1589#ifndef SA_RESTART
1639# define SA_RESTART 0 1590# define SA_RESTART 0
1640#endif 1591#endif
1641 1592
… …
1690#endif 1641#endif
1691 if (expect_false (ev_is_active (w))) 1642 if (expect_false (ev_is_active (w)))
1692 return; 1643 return;
1693 1644
1694 ev_start (EV_A_ (W)w, 1); 1645 ev_start (EV_A_ (W)w, 1);
1695 wlist_add ((WL *)&childs [w->pid & (PID_HASHSIZE - 1)], (WL)w); 1646 wlist_add ((WL *)&childs [w->pid & (EV_PID_HASHSIZE - 1)], (WL)w);
1696} 1647}
1697 1648
1698void 1649void
1699ev_child_stop (EV_P_ ev_child *w) 1650ev_child_stop (EV_P_ ev_child *w)
1700{ 1651{
1701 ev_clear_pending (EV_A_ (W)w); 1652 ev_clear_pending (EV_A_ (W)w);
1702 if (expect_false (!ev_is_active (w))) 1653 if (expect_false (!ev_is_active (w)))
1703 return; 1654 return;
1704 1655
1705 wlist_del ((WL *)&childs [w->pid & (PID_HASHSIZE - 1)], (WL)w); 1656 wlist_del ((WL *)&childs [w->pid & (EV_PID_HASHSIZE - 1)], (WL)w);
1657 ev_stop (EV_A_ (W)w);
1658}
1659
1660#if EV_STAT_ENABLE
1661
1662# ifdef _WIN32
1663# undef lstat
1664# define lstat(a,b) _stati64 (a,b)
1665# endif
1666
1667#define DEF_STAT_INTERVAL 5.0074891
1668#define MIN_STAT_INTERVAL 0.1074891
1669
1670void
1671ev_stat_stat (EV_P_ ev_stat *w)
1672{
1673 if (lstat (w->path, &w->attr) < 0)
1674 w->attr.st_nlink = 0;
1675 else if (!w->attr.st_nlink)
1676 w->attr.st_nlink = 1;
1677}
1678
1679static void
1680stat_timer_cb (EV_P_ ev_timer *w_, int revents)
1681{
1682 ev_stat *w = (ev_stat *)(((char *)w_) - offsetof (ev_stat, timer));
1683
1684 /* we copy this here each the time so that */
1685 /* prev has the old value when the callback gets invoked */
1686 w->prev = w->attr;
1687 ev_stat_stat (EV_A_ w);
1688
1689 if (memcmp (&w->prev, &w->attr, sizeof (ev_statdata)))
1690 ev_feed_event (EV_A_ w, EV_STAT);
1691}
1692
1693void
1694ev_stat_start (EV_P_ ev_stat *w)
1695{
1696 if (expect_false (ev_is_active (w)))
1697 return;
1698
1699 /* since we use memcmp, we need to clear any padding data etc. */
1700 memset (&w->prev, 0, sizeof (ev_statdata));
1701 memset (&w->attr, 0, sizeof (ev_statdata));
1702
1703 ev_stat_stat (EV_A_ w);
1704
1705 if (w->interval < MIN_STAT_INTERVAL)
1706 w->interval = w->interval ? MIN_STAT_INTERVAL : DEF_STAT_INTERVAL;
1707
1708 ev_timer_init (&w->timer, stat_timer_cb, w->interval, w->interval);
1709 ev_set_priority (&w->timer, ev_priority (w));
1710 ev_timer_start (EV_A_ &w->timer);
1711
1712 ev_start (EV_A_ (W)w, 1);
1713}
1714
1715void
1716ev_stat_stop (EV_P_ ev_stat *w)
1717{
1718 ev_clear_pending (EV_A_ (W)w);
1719 if (expect_false (!ev_is_active (w)))
1720 return;
1721
1722 ev_timer_stop (EV_A_ &w->timer);
1723
1724 ev_stop (EV_A_ (W)w);
1725}
1726#endif
1727
1728void
1729ev_idle_start (EV_P_ ev_idle *w)
1730{
1731 if (expect_false (ev_is_active (w)))
1732 return;
1733
1734 ev_start (EV_A_ (W)w, ++idlecnt);
1735 array_needsize (ev_idle *, idles, idlemax, idlecnt, EMPTY2);
1736 idles [idlecnt - 1] = w;
1737}
1738
1739void
1740ev_idle_stop (EV_P_ ev_idle *w)
1741{
1742 ev_clear_pending (EV_A_ (W)w);
1743 if (expect_false (!ev_is_active (w)))
1744 return;
1745
1746 {
1747 int active = ((W)w)->active;
1748 idles [active - 1] = idles [--idlecnt];
1749 ((W)idles [active - 1])->active = active;
1750 }
1751
1752 ev_stop (EV_A_ (W)w);
1753}
1754
1755void
1756ev_prepare_start (EV_P_ ev_prepare *w)
1757{
1758 if (expect_false (ev_is_active (w)))
1759 return;
1760
1761 ev_start (EV_A_ (W)w, ++preparecnt);
1762 array_needsize (ev_prepare *, prepares, preparemax, preparecnt, EMPTY2);
1763 prepares [preparecnt - 1] = w;
1764}
1765
1766void
1767ev_prepare_stop (EV_P_ ev_prepare *w)
1768{
1769 ev_clear_pending (EV_A_ (W)w);
1770 if (expect_false (!ev_is_active (w)))
1771 return;
1772
1773 {
1774 int active = ((W)w)->active;
1775 prepares [active - 1] = prepares [--preparecnt];
1776 ((W)prepares [active - 1])->active = active;
1777 }
1778
1779 ev_stop (EV_A_ (W)w);
1780}
1781
1782void
1783ev_check_start (EV_P_ ev_check *w)
1784{
1785 if (expect_false (ev_is_active (w)))
1786 return;
1787
1788 ev_start (EV_A_ (W)w, ++checkcnt);
1789 array_needsize (ev_check *, checks, checkmax, checkcnt, EMPTY2);
1790 checks [checkcnt - 1] = w;
1791}
1792
1793void
1794ev_check_stop (EV_P_ ev_check *w)
1795{
1796 ev_clear_pending (EV_A_ (W)w);
1797 if (expect_false (!ev_is_active (w)))
1798 return;
1799
1800 {
1801 int active = ((W)w)->active;
1802 checks [active - 1] = checks [--checkcnt];
1803 ((W)checks [active - 1])->active = active;
1804 }
1805
1706 ev_stop (EV_A_ (W)w); 1806 ev_stop (EV_A_ (W)w);
1707} 1807}
1708 1808
1709#if EV_EMBED_ENABLE 1809#if EV_EMBED_ENABLE
1710void noinline 1810void noinline
… …
1753 1853
1754 ev_stop (EV_A_ (W)w); 1854 ev_stop (EV_A_ (W)w);
1755} 1855}
1756#endif 1856#endif
1757 1857
1758#if EV_STAT_ENABLE 1858#if EV_FORK_ENABLE
1759
1760# ifdef _WIN32
1761# define lstat(a,b) stat(a,b)
1762# endif
1763
1764void 1859void
1765ev_stat_stat (EV_P_ ev_stat *w)
1766{
1767 if (lstat (w->path, &w->attr) < 0)
1768 w->attr.st_nlink = 0;
1769 else if (!w->attr.st_nlink)
1770 w->attr.st_nlink = 1;
1771}
1772
1773static void
1774stat_timer_cb (EV_P_ ev_timer *w_, int revents)
1775{
1776 ev_stat *w = (ev_stat *)(((char *)w_) - offsetof (ev_stat, timer));
1777
1778 /* we copy this here each the time so that */
1779 /* prev has the old value when the callback gets invoked */
1780 w->prev = w->attr;
1781 ev_stat_stat (EV_A_ w);
1782
1783 if (memcmp (&w->prev, &w->attr, sizeof (ev_statdata)))
1784 ev_feed_event (EV_A_ w, EV_STAT);
1785}
1786
1787void
1788ev_stat_start (EV_P_ ev_stat *w) 1860ev_fork_start (EV_P_ ev_fork *w)
1789{ 1861{
1790 if (expect_false (ev_is_active (w))) 1862 if (expect_false (ev_is_active (w)))
1791 return; 1863 return;
1792 1864
1793 /* since we use memcmp, we need to clear any padding data etc. */
1794 memset (&w->prev, 0, sizeof (ev_statdata));
1795 memset (&w->attr, 0, sizeof (ev_statdata));
1796
1797 ev_stat_stat (EV_A_ w);
1798
1799 ev_timer_init (&w->timer, stat_timer_cb, w->interval, w->interval);
1800 ev_set_priority (&w->timer, ev_priority (w));
1801 ev_timer_start (EV_A_ &w->timer);
1802
1803 ev_start (EV_A_ (W)w, 1); 1865 ev_start (EV_A_ (W)w, ++forkcnt);
1866 array_needsize (ev_fork *, forks, forkmax, forkcnt, EMPTY2);
1867 forks [forkcnt - 1] = w;
1804} 1868}
1805 1869
1806void 1870void
1807ev_stat_stop (EV_P_ ev_stat *w) 1871ev_fork_stop (EV_P_ ev_fork *w)
1808{ 1872{
1809 ev_clear_pending (EV_A_ (W)w); 1873 ev_clear_pending (EV_A_ (W)w);
1810 if (expect_false (!ev_is_active (w))) 1874 if (expect_false (!ev_is_active (w)))
1811 return; 1875 return;
1812 1876
1813 ev_timer_stop (EV_A_ &w->timer); 1877 {
1878 int active = ((W)w)->active;
1879 forks [active - 1] = forks [--forkcnt];
1880 ((W)forks [active - 1])->active = active;
1881 }
1814 1882
1815 ev_stop (EV_A_ (W)w); 1883 ev_stop (EV_A_ (W)w);
1816} 1884}
1817#endif 1885#endif
1818 1886

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