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Comparing libev/ev.c (file contents):
Revision 1.136 by root, Sat Nov 24 07:14:26 2007 UTC vs.
Revision 1.150 by root, Tue Nov 27 19:41:52 2007 UTC

… …
111#include <time.h> 111#include <time.h>
112 112
113#include <signal.h> 113#include <signal.h>
114 114
115#ifndef _WIN32 115#ifndef _WIN32
116# include <unistd.h>
117# include <sys/time.h> 116# include <sys/time.h>
118# include <sys/wait.h> 117# include <sys/wait.h>
118# include <unistd.h>
119#else 119#else
120# define WIN32_LEAN_AND_MEAN 120# define WIN32_LEAN_AND_MEAN
121# include <windows.h> 121# include <windows.h>
122# ifndef EV_SELECT_IS_WINSOCKET 122# ifndef EV_SELECT_IS_WINSOCKET
123# define EV_SELECT_IS_WINSOCKET 1 123# define EV_SELECT_IS_WINSOCKET 1
… …
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
187# include "ev.h" 194# include "ev.h"
188#endif 195#endif
189 196
190#if __GNUC__ >= 3 197#if __GNUC__ >= 3
191# define expect(expr,value) __builtin_expect ((expr),(value)) 198# define expect(expr,value) __builtin_expect ((expr),(value))
199# define inline_size static inline /* inline for codesize */
200# if EV_MINIMAL
201# define noinline __attribute__ ((noinline))
202# define inline_speed static noinline
203# else
204# define noinline
192# define inline static inline 205# define inline_speed static inline
206# endif
193#else 207#else
194# define expect(expr,value) (expr) 208# define expect(expr,value) (expr)
209# define inline_speed static
195# define inline static 210# define inline_size static
211# define noinline
196#endif 212#endif
197 213
198#define expect_false(expr) expect ((expr) != 0, 0) 214#define expect_false(expr) expect ((expr) != 0, 0)
199#define expect_true(expr) expect ((expr) != 0, 1) 215#define expect_true(expr) expect ((expr) != 0, 1)
200 216
… …
216 232
217/*****************************************************************************/ 233/*****************************************************************************/
218 234
219static void (*syserr_cb)(const char *msg); 235static void (*syserr_cb)(const char *msg);
220 236
237void
221void ev_set_syserr_cb (void (*cb)(const char *msg)) 238ev_set_syserr_cb (void (*cb)(const char *msg))
222{ 239{
223 syserr_cb = cb; 240 syserr_cb = cb;
224} 241}
225 242
226static void 243static void noinline
227syserr (const char *msg) 244syserr (const char *msg)
228{ 245{
229 if (!msg) 246 if (!msg)
230 msg = "(libev) system error"; 247 msg = "(libev) system error";
231 248
… …
236 perror (msg); 253 perror (msg);
237 abort (); 254 abort ();
238 } 255 }
239} 256}
240 257
241static void *(*alloc)(void *ptr, long size); 258static void *(*alloc)(void *ptr, size_t size) = realloc;
242 259
260void
243void ev_set_allocator (void *(*cb)(void *ptr, long size)) 261ev_set_allocator (void *(*cb)(void *ptr, size_t size))
244{ 262{
245 alloc = cb; 263 alloc = cb;
246} 264}
247 265
248static void * 266inline_speed void *
249ev_realloc (void *ptr, long size) 267ev_realloc (void *ptr, size_t size)
250{ 268{
251 ptr = alloc ? alloc (ptr, size) : realloc (ptr, size); 269 ptr = alloc (ptr, size);
252 270
253 if (!ptr && size) 271 if (!ptr && size)
254 { 272 {
255 fprintf (stderr, "libev: cannot allocate %ld bytes, aborting.", size); 273 fprintf (stderr, "libev: cannot allocate %ld bytes, aborting.", (long)size);
256 abort (); 274 abort ();
257 } 275 }
258 276
259 return ptr; 277 return ptr;
260} 278}
… …
320 gettimeofday (&tv, 0); 338 gettimeofday (&tv, 0);
321 return tv.tv_sec + tv.tv_usec * 1e-6; 339 return tv.tv_sec + tv.tv_usec * 1e-6;
322#endif 340#endif
323} 341}
324 342
325inline ev_tstamp 343ev_tstamp inline_size
326get_clock (void) 344get_clock (void)
327{ 345{
328#if EV_USE_MONOTONIC 346#if EV_USE_MONOTONIC
329 if (expect_true (have_monotonic)) 347 if (expect_true (have_monotonic))
330 { 348 {
… …
373#define array_free(stem, idx) \ 391#define array_free(stem, idx) \
374 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;
375 393
376/*****************************************************************************/ 394/*****************************************************************************/
377 395
378static void 396void noinline
379anfds_init (ANFD *base, int count)
380{
381 while (count--)
382 {
383 base->head = 0;
384 base->events = EV_NONE;
385 base->reify = 0;
386
387 ++base;
388 }
389}
390
391void
392ev_feed_event (EV_P_ void *w, int revents) 397ev_feed_event (EV_P_ void *w, int revents)
393{ 398{
394 W w_ = (W)w; 399 W w_ = (W)w;
395 400
396 if (expect_false (w_->pending)) 401 if (expect_false (w_->pending))
… …
403 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);
404 pendings [ABSPRI (w_)][w_->pending - 1].w = w_; 409 pendings [ABSPRI (w_)][w_->pending - 1].w = w_;
405 pendings [ABSPRI (w_)][w_->pending - 1].events = revents; 410 pendings [ABSPRI (w_)][w_->pending - 1].events = revents;
406} 411}
407 412
408static void 413void inline_size
409queue_events (EV_P_ W *events, int eventcnt, int type) 414queue_events (EV_P_ W *events, int eventcnt, int type)
410{ 415{
411 int i; 416 int i;
412 417
413 for (i = 0; i < eventcnt; ++i) 418 for (i = 0; i < eventcnt; ++i)
414 ev_feed_event (EV_A_ events [i], type); 419 ev_feed_event (EV_A_ events [i], type);
415} 420}
416 421
417inline void 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
437void inline_speed
418fd_event (EV_P_ int fd, int revents) 438fd_event (EV_P_ int fd, int revents)
419{ 439{
420 ANFD *anfd = anfds + fd; 440 ANFD *anfd = anfds + fd;
421 ev_io *w; 441 ev_io *w;
422 442
… …
433ev_feed_fd_event (EV_P_ int fd, int revents) 453ev_feed_fd_event (EV_P_ int fd, int revents)
434{ 454{
435 fd_event (EV_A_ fd, revents); 455 fd_event (EV_A_ fd, revents);
436} 456}
437 457
438/*****************************************************************************/ 458void inline_size
439
440inline void
441fd_reify (EV_P) 459fd_reify (EV_P)
442{ 460{
443 int i; 461 int i;
444 462
445 for (i = 0; i < fdchangecnt; ++i) 463 for (i = 0; i < fdchangecnt; ++i)
… …
469 } 487 }
470 488
471 fdchangecnt = 0; 489 fdchangecnt = 0;
472} 490}
473 491
474static void 492void inline_size
475fd_change (EV_P_ int fd) 493fd_change (EV_P_ int fd)
476{ 494{
477 if (expect_false (anfds [fd].reify)) 495 if (expect_false (anfds [fd].reify))
478 return; 496 return;
479 497
… …
482 ++fdchangecnt; 500 ++fdchangecnt;
483 array_needsize (int, fdchanges, fdchangemax, fdchangecnt, EMPTY2); 501 array_needsize (int, fdchanges, fdchangemax, fdchangecnt, EMPTY2);
484 fdchanges [fdchangecnt - 1] = fd; 502 fdchanges [fdchangecnt - 1] = fd;
485} 503}
486 504
487static void 505void inline_speed
488fd_kill (EV_P_ int fd) 506fd_kill (EV_P_ int fd)
489{ 507{
490 ev_io *w; 508 ev_io *w;
491 509
492 while ((w = (ev_io *)anfds [fd].head)) 510 while ((w = (ev_io *)anfds [fd].head))
… …
494 ev_io_stop (EV_A_ w); 512 ev_io_stop (EV_A_ w);
495 ev_feed_event (EV_A_ (W)w, EV_ERROR | EV_READ | EV_WRITE); 513 ev_feed_event (EV_A_ (W)w, EV_ERROR | EV_READ | EV_WRITE);
496 } 514 }
497} 515}
498 516
499inline int 517int inline_size
500fd_valid (int fd) 518fd_valid (int fd)
501{ 519{
502#ifdef _WIN32 520#ifdef _WIN32
503 return _get_osfhandle (fd) != -1; 521 return _get_osfhandle (fd) != -1;
504#else 522#else
505 return fcntl (fd, F_GETFD) != -1; 523 return fcntl (fd, F_GETFD) != -1;
506#endif 524#endif
507} 525}
508 526
509/* called on EBADF to verify fds */ 527/* called on EBADF to verify fds */
510static void 528static void noinline
511fd_ebadf (EV_P) 529fd_ebadf (EV_P)
512{ 530{
513 int fd; 531 int fd;
514 532
515 for (fd = 0; fd < anfdmax; ++fd) 533 for (fd = 0; fd < anfdmax; ++fd)
… …
517 if (!fd_valid (fd) == -1 && errno == EBADF) 535 if (!fd_valid (fd) == -1 && errno == EBADF)
518 fd_kill (EV_A_ fd); 536 fd_kill (EV_A_ fd);
519} 537}
520 538
521/* called on ENOMEM in select/poll to kill some fds and retry */ 539/* called on ENOMEM in select/poll to kill some fds and retry */
522static void 540static void noinline
523fd_enomem (EV_P) 541fd_enomem (EV_P)
524{ 542{
525 int fd; 543 int fd;
526 544
527 for (fd = anfdmax; fd--; ) 545 for (fd = anfdmax; fd--; )
… …
531 return; 549 return;
532 } 550 }
533} 551}
534 552
535/* usually called after fork if backend needs to re-arm all fds from scratch */ 553/* usually called after fork if backend needs to re-arm all fds from scratch */
536static void 554static void noinline
537fd_rearm_all (EV_P) 555fd_rearm_all (EV_P)
538{ 556{
539 int fd; 557 int fd;
540 558
541 /* this should be highly optimised to not do anything but set a flag */ 559 /* this should be highly optimised to not do anything but set a flag */
… …
547 } 565 }
548} 566}
549 567
550/*****************************************************************************/ 568/*****************************************************************************/
551 569
552static void 570void inline_speed
553upheap (WT *heap, int k) 571upheap (WT *heap, int k)
554{ 572{
555 WT w = heap [k]; 573 WT w = heap [k];
556 574
557 while (k && heap [k >> 1]->at > w->at) 575 while (k && heap [k >> 1]->at > w->at)
… …
564 heap [k] = w; 582 heap [k] = w;
565 ((W)heap [k])->active = k + 1; 583 ((W)heap [k])->active = k + 1;
566 584
567} 585}
568 586
569static void 587void inline_speed
570downheap (WT *heap, int N, int k) 588downheap (WT *heap, int N, int k)
571{ 589{
572 WT w = heap [k]; 590 WT w = heap [k];
573 591
574 while (k < (N >> 1)) 592 while (k < (N >> 1))
… …
588 606
589 heap [k] = w; 607 heap [k] = w;
590 ((W)heap [k])->active = k + 1; 608 ((W)heap [k])->active = k + 1;
591} 609}
592 610
593inline void 611void inline_size
594adjustheap (WT *heap, int N, int k) 612adjustheap (WT *heap, int N, int k)
595{ 613{
596 upheap (heap, k); 614 upheap (heap, k);
597 downheap (heap, N, k); 615 downheap (heap, N, k);
598} 616}
… …
610 628
611static int sigpipe [2]; 629static int sigpipe [2];
612static sig_atomic_t volatile gotsig; 630static sig_atomic_t volatile gotsig;
613static ev_io sigev; 631static ev_io sigev;
614 632
615static void 633void inline_size
616signals_init (ANSIG *base, int count) 634signals_init (ANSIG *base, int count)
617{ 635{
618 while (count--) 636 while (count--)
619 { 637 {
620 base->head = 0; 638 base->head = 0;
… …
640 write (sigpipe [1], &signum, 1); 658 write (sigpipe [1], &signum, 1);
641 errno = old_errno; 659 errno = old_errno;
642 } 660 }
643} 661}
644 662
645void 663void noinline
646ev_feed_signal_event (EV_P_ int signum) 664ev_feed_signal_event (EV_P_ int signum)
647{ 665{
648 WL w; 666 WL w;
649 667
650#if EV_MULTIPLICITY 668#if EV_MULTIPLICITY
… …
673 for (signum = signalmax; signum--; ) 691 for (signum = signalmax; signum--; )
674 if (signals [signum].gotsig) 692 if (signals [signum].gotsig)
675 ev_feed_signal_event (EV_A_ signum + 1); 693 ev_feed_signal_event (EV_A_ signum + 1);
676} 694}
677 695
678static void 696void inline_size
679fd_intern (int fd) 697fd_intern (int fd)
680{ 698{
681#ifdef _WIN32 699#ifdef _WIN32
682 int arg = 1; 700 int arg = 1;
683 ioctlsocket (_get_osfhandle (fd), FIONBIO, &arg); 701 ioctlsocket (_get_osfhandle (fd), FIONBIO, &arg);
… …
685 fcntl (fd, F_SETFD, FD_CLOEXEC); 703 fcntl (fd, F_SETFD, FD_CLOEXEC);
686 fcntl (fd, F_SETFL, O_NONBLOCK); 704 fcntl (fd, F_SETFL, O_NONBLOCK);
687#endif 705#endif
688} 706}
689 707
690static void 708static void noinline
691siginit (EV_P) 709siginit (EV_P)
692{ 710{
693 fd_intern (sigpipe [0]); 711 fd_intern (sigpipe [0]);
694 fd_intern (sigpipe [1]); 712 fd_intern (sigpipe [1]);
695 713
… …
698 ev_unref (EV_A); /* child watcher should not keep loop alive */ 716 ev_unref (EV_A); /* child watcher should not keep loop alive */
699} 717}
700 718
701/*****************************************************************************/ 719/*****************************************************************************/
702 720
703static ev_child *childs [PID_HASHSIZE]; 721static ev_child *childs [EV_PID_HASHSIZE];
704 722
705#ifndef _WIN32 723#ifndef _WIN32
706 724
707static ev_signal childev; 725static ev_signal childev;
708 726
709#ifndef WCONTINUED 727void inline_speed
710# define WCONTINUED 0
711#endif
712
713static void
714child_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)
715{ 729{
716 ev_child *w; 730 ev_child *w;
717 731
718 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)
719 if (w->pid == pid || !w->pid) 733 if (w->pid == pid || !w->pid)
720 { 734 {
721 ev_priority (w) = ev_priority (sw); /* need to do it *now* */ 735 ev_priority (w) = ev_priority (sw); /* need to do it *now* */
722 w->rpid = pid; 736 w->rpid = pid;
723 w->rstatus = status; 737 w->rstatus = status;
724 ev_feed_event (EV_A_ (W)w, EV_CHILD); 738 ev_feed_event (EV_A_ (W)w, EV_CHILD);
725 } 739 }
726} 740}
727 741
742#ifndef WCONTINUED
743# define WCONTINUED 0
744#endif
745
728static void 746static void
729childcb (EV_P_ ev_signal *sw, int revents) 747childcb (EV_P_ ev_signal *sw, int revents)
730{ 748{
731 int pid, status; 749 int pid, status;
732 750
751 /* some systems define WCONTINUED but then fail to support it (linux 2.4) */
733 if (0 < (pid = waitpid (-1, &status, WNOHANG | WUNTRACED | WCONTINUED))) 752 if (0 >= (pid = waitpid (-1, &status, WNOHANG | WUNTRACED | WCONTINUED)))
734 { 753 if (!WCONTINUED
754 || errno != EINVAL
755 || 0 >= (pid = waitpid (-1, &status, WNOHANG | WUNTRACED)))
756 return;
757
735 /* 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 */
736 /* 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 */
737 ev_feed_event (EV_A_ (W)sw, EV_SIGNAL); 760 ev_feed_event (EV_A_ (W)sw, EV_SIGNAL);
738 761
739 child_reap (EV_A_ sw, pid, pid, status); 762 child_reap (EV_A_ sw, pid, pid, status);
763 if (EV_PID_HASHSIZE > 1)
740 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 */
741 }
742} 765}
743 766
744#endif 767#endif
745 768
746/*****************************************************************************/ 769/*****************************************************************************/
… …
772{ 795{
773 return EV_VERSION_MINOR; 796 return EV_VERSION_MINOR;
774} 797}
775 798
776/* return true if we are running with elevated privileges and should ignore env variables */ 799/* return true if we are running with elevated privileges and should ignore env variables */
777static int 800int inline_size
778enable_secure (void) 801enable_secure (void)
779{ 802{
780#ifdef _WIN32 803#ifdef _WIN32
781 return 0; 804 return 0;
782#else 805#else
… …
904 array_free (pending, [i]); 927 array_free (pending, [i]);
905 928
906 /* have to use the microsoft-never-gets-it-right macro */ 929 /* have to use the microsoft-never-gets-it-right macro */
907 array_free (fdchange, EMPTY0); 930 array_free (fdchange, EMPTY0);
908 array_free (timer, EMPTY0); 931 array_free (timer, EMPTY0);
909#if EV_PERIODICS 932#if EV_PERIODIC_ENABLE
910 array_free (periodic, EMPTY0); 933 array_free (periodic, EMPTY0);
911#endif 934#endif
912 array_free (idle, EMPTY0); 935 array_free (idle, EMPTY0);
913 array_free (prepare, EMPTY0); 936 array_free (prepare, EMPTY0);
914 array_free (check, EMPTY0); 937 array_free (check, EMPTY0);
… …
1050 postfork = 1; 1073 postfork = 1;
1051} 1074}
1052 1075
1053/*****************************************************************************/ 1076/*****************************************************************************/
1054 1077
1055static int 1078int inline_size
1056any_pending (EV_P) 1079any_pending (EV_P)
1057{ 1080{
1058 int pri; 1081 int pri;
1059 1082
1060 for (pri = NUMPRI; pri--; ) 1083 for (pri = NUMPRI; pri--; )
… …
1062 return 1; 1085 return 1;
1063 1086
1064 return 0; 1087 return 0;
1065} 1088}
1066 1089
1067inline void 1090void inline_speed
1068call_pending (EV_P) 1091call_pending (EV_P)
1069{ 1092{
1070 int pri; 1093 int pri;
1071 1094
1072 for (pri = NUMPRI; pri--; ) 1095 for (pri = NUMPRI; pri--; )
… …
1074 { 1097 {
1075 ANPENDING *p = pendings [pri] + --pendingcnt [pri]; 1098 ANPENDING *p = pendings [pri] + --pendingcnt [pri];
1076 1099
1077 if (expect_true (p->w)) 1100 if (expect_true (p->w))
1078 { 1101 {
1102 assert (("non-pending watcher on pending list", p->w->pending));
1103
1079 p->w->pending = 0; 1104 p->w->pending = 0;
1080 EV_CB_INVOKE (p->w, p->events); 1105 EV_CB_INVOKE (p->w, p->events);
1081 } 1106 }
1082 } 1107 }
1083} 1108}
1084 1109
1085inline void 1110void inline_size
1086timers_reify (EV_P) 1111timers_reify (EV_P)
1087{ 1112{
1088 while (timercnt && ((WT)timers [0])->at <= mn_now) 1113 while (timercnt && ((WT)timers [0])->at <= mn_now)
1089 { 1114 {
1090 ev_timer *w = timers [0]; 1115 ev_timer *w = timers [0];
… …
1107 1132
1108 ev_feed_event (EV_A_ (W)w, EV_TIMEOUT); 1133 ev_feed_event (EV_A_ (W)w, EV_TIMEOUT);
1109 } 1134 }
1110} 1135}
1111 1136
1112#if EV_PERIODICS 1137#if EV_PERIODIC_ENABLE
1113inline void 1138void inline_size
1114periodics_reify (EV_P) 1139periodics_reify (EV_P)
1115{ 1140{
1116 while (periodiccnt && ((WT)periodics [0])->at <= ev_rt_now) 1141 while (periodiccnt && ((WT)periodics [0])->at <= ev_rt_now)
1117 { 1142 {
1118 ev_periodic *w = periodics [0]; 1143 ev_periodic *w = periodics [0];
… …
1137 1162
1138 ev_feed_event (EV_A_ (W)w, EV_PERIODIC); 1163 ev_feed_event (EV_A_ (W)w, EV_PERIODIC);
1139 } 1164 }
1140} 1165}
1141 1166
1142static void 1167static void noinline
1143periodics_reschedule (EV_P) 1168periodics_reschedule (EV_P)
1144{ 1169{
1145 int i; 1170 int i;
1146 1171
1147 /* adjust periodics after time jump */ 1172 /* adjust periodics after time jump */
… …
1159 for (i = periodiccnt >> 1; i--; ) 1184 for (i = periodiccnt >> 1; i--; )
1160 downheap ((WT *)periodics, periodiccnt, i); 1185 downheap ((WT *)periodics, periodiccnt, i);
1161} 1186}
1162#endif 1187#endif
1163 1188
1164inline int 1189int inline_size
1165time_update_monotonic (EV_P) 1190time_update_monotonic (EV_P)
1166{ 1191{
1167 mn_now = get_clock (); 1192 mn_now = get_clock ();
1168 1193
1169 if (expect_true (mn_now - now_floor < MIN_TIMEJUMP * .5)) 1194 if (expect_true (mn_now - now_floor < MIN_TIMEJUMP * .5))
… …
1177 ev_rt_now = ev_time (); 1202 ev_rt_now = ev_time ();
1178 return 1; 1203 return 1;
1179 } 1204 }
1180} 1205}
1181 1206
1182inline void 1207void inline_size
1183time_update (EV_P) 1208time_update (EV_P)
1184{ 1209{
1185 int i; 1210 int i;
1186 1211
1187#if EV_USE_MONOTONIC 1212#if EV_USE_MONOTONIC
… …
1189 { 1214 {
1190 if (time_update_monotonic (EV_A)) 1215 if (time_update_monotonic (EV_A))
1191 { 1216 {
1192 ev_tstamp odiff = rtmn_diff; 1217 ev_tstamp odiff = rtmn_diff;
1193 1218
1194 for (i = 4; --i; ) /* loop a few times, before making important decisions */ 1219 /* loop a few times, before making important decisions.
1220 * on the choice of "4": one iteration isn't enough,
1221 * in case we get preempted during the calls to
1222 * ev_time and get_clock. a second call is almost guarenteed
1223 * to succeed in that case, though. and looping a few more times
1224 * doesn't hurt either as we only do this on time-jumps or
1225 * in the unlikely event of getting preempted here.
1226 */
1227 for (i = 4; --i; )
1195 { 1228 {
1196 rtmn_diff = ev_rt_now - mn_now; 1229 rtmn_diff = ev_rt_now - mn_now;
1197 1230
1198 if (fabs (odiff - rtmn_diff) < MIN_TIMEJUMP) 1231 if (fabs (odiff - rtmn_diff) < MIN_TIMEJUMP)
1199 return; /* all is well */ 1232 return; /* all is well */
… …
1201 ev_rt_now = ev_time (); 1234 ev_rt_now = ev_time ();
1202 mn_now = get_clock (); 1235 mn_now = get_clock ();
1203 now_floor = mn_now; 1236 now_floor = mn_now;
1204 } 1237 }
1205 1238
1206# if EV_PERIODICS 1239# if EV_PERIODIC_ENABLE
1207 periodics_reschedule (EV_A); 1240 periodics_reschedule (EV_A);
1208# endif 1241# endif
1209 /* no timer adjustment, as the monotonic clock doesn't jump */ 1242 /* no timer adjustment, as the monotonic clock doesn't jump */
1210 /* timers_reschedule (EV_A_ rtmn_diff - odiff) */ 1243 /* timers_reschedule (EV_A_ rtmn_diff - odiff) */
1211 } 1244 }
… …
1215 { 1248 {
1216 ev_rt_now = ev_time (); 1249 ev_rt_now = ev_time ();
1217 1250
1218 if (expect_false (mn_now > ev_rt_now || mn_now < ev_rt_now - MAX_BLOCKTIME - MIN_TIMEJUMP)) 1251 if (expect_false (mn_now > ev_rt_now || mn_now < ev_rt_now - MAX_BLOCKTIME - MIN_TIMEJUMP))
1219 { 1252 {
1220#if EV_PERIODICS 1253#if EV_PERIODIC_ENABLE
1221 periodics_reschedule (EV_A); 1254 periodics_reschedule (EV_A);
1222#endif 1255#endif
1223 1256
1224 /* adjust timers. this is easy, as the offset is the same for all */ 1257 /* adjust timers. this is easy, as the offset is the same for all */
1225 for (i = 0; i < timercnt; ++i) 1258 for (i = 0; i < timercnt; ++i)
… …
1251 ? EVUNLOOP_ONE 1284 ? EVUNLOOP_ONE
1252 : EVUNLOOP_CANCEL; 1285 : EVUNLOOP_CANCEL;
1253 1286
1254 while (activecnt) 1287 while (activecnt)
1255 { 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
1256 /* queue check watchers (and execute them) */ 1299 /* queue check watchers (and execute them) */
1257 if (expect_false (preparecnt)) 1300 if (expect_false (preparecnt))
1258 { 1301 {
1259 queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE); 1302 queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE);
1260 call_pending (EV_A); 1303 call_pending (EV_A);
… …
1292 { 1335 {
1293 ev_tstamp to = ((WT)timers [0])->at - mn_now + backend_fudge; 1336 ev_tstamp to = ((WT)timers [0])->at - mn_now + backend_fudge;
1294 if (block > to) block = to; 1337 if (block > to) block = to;
1295 } 1338 }
1296 1339
1297#if EV_PERIODICS 1340#if EV_PERIODIC_ENABLE
1298 if (periodiccnt) 1341 if (periodiccnt)
1299 { 1342 {
1300 ev_tstamp to = ((WT)periodics [0])->at - ev_rt_now + backend_fudge; 1343 ev_tstamp to = ((WT)periodics [0])->at - ev_rt_now + backend_fudge;
1301 if (block > to) block = to; 1344 if (block > to) block = to;
1302 } 1345 }
… …
1311 /* update ev_rt_now, do magic */ 1354 /* update ev_rt_now, do magic */
1312 time_update (EV_A); 1355 time_update (EV_A);
1313 1356
1314 /* queue pending timers and reschedule them */ 1357 /* queue pending timers and reschedule them */
1315 timers_reify (EV_A); /* relative timers called last */ 1358 timers_reify (EV_A); /* relative timers called last */
1316#if EV_PERIODICS 1359#if EV_PERIODIC_ENABLE
1317 periodics_reify (EV_A); /* absolute timers called first */ 1360 periodics_reify (EV_A); /* absolute timers called first */
1318#endif 1361#endif
1319 1362
1320 /* queue idle watchers unless io or timers are pending */ 1363 /* queue idle watchers unless other events are pending */
1321 if (idlecnt && !any_pending (EV_A)) 1364 if (idlecnt && !any_pending (EV_A))
1322 queue_events (EV_A_ (W *)idles, idlecnt, EV_IDLE); 1365 queue_events (EV_A_ (W *)idles, idlecnt, EV_IDLE);
1323 1366
1324 /* queue check watchers, to be executed first */ 1367 /* queue check watchers, to be executed first */
1325 if (expect_false (checkcnt)) 1368 if (expect_false (checkcnt))
… …
1341 loop_done = how; 1384 loop_done = how;
1342} 1385}
1343 1386
1344/*****************************************************************************/ 1387/*****************************************************************************/
1345 1388
1346inline void 1389void inline_size
1347wlist_add (WL *head, WL elem) 1390wlist_add (WL *head, WL elem)
1348{ 1391{
1349 elem->next = *head; 1392 elem->next = *head;
1350 *head = elem; 1393 *head = elem;
1351} 1394}
1352 1395
1353inline void 1396void inline_size
1354wlist_del (WL *head, WL elem) 1397wlist_del (WL *head, WL elem)
1355{ 1398{
1356 while (*head) 1399 while (*head)
1357 { 1400 {
1358 if (*head == elem) 1401 if (*head == elem)
… …
1363 1406
1364 head = &(*head)->next; 1407 head = &(*head)->next;
1365 } 1408 }
1366} 1409}
1367 1410
1368inline void 1411void inline_speed
1369ev_clear_pending (EV_P_ W w) 1412ev_clear_pending (EV_P_ W w)
1370{ 1413{
1371 if (w->pending) 1414 if (w->pending)
1372 { 1415 {
1373 pendings [ABSPRI (w)][w->pending - 1].w = 0; 1416 pendings [ABSPRI (w)][w->pending - 1].w = 0;
1374 w->pending = 0; 1417 w->pending = 0;
1375 } 1418 }
1376} 1419}
1377 1420
1378inline void 1421void inline_speed
1379ev_start (EV_P_ W w, int active) 1422ev_start (EV_P_ W w, int active)
1380{ 1423{
1381 if (w->priority < EV_MINPRI) w->priority = EV_MINPRI; 1424 if (w->priority < EV_MINPRI) w->priority = EV_MINPRI;
1382 if (w->priority > EV_MAXPRI) w->priority = EV_MAXPRI; 1425 if (w->priority > EV_MAXPRI) w->priority = EV_MAXPRI;
1383 1426
1384 w->active = active; 1427 w->active = active;
1385 ev_ref (EV_A); 1428 ev_ref (EV_A);
1386} 1429}
1387 1430
1388inline void 1431void inline_size
1389ev_stop (EV_P_ W w) 1432ev_stop (EV_P_ W w)
1390{ 1433{
1391 ev_unref (EV_A); 1434 ev_unref (EV_A);
1392 w->active = 0; 1435 w->active = 0;
1393} 1436}
… …
1482 w->at = w->repeat; 1525 w->at = w->repeat;
1483 ev_timer_start (EV_A_ w); 1526 ev_timer_start (EV_A_ w);
1484 } 1527 }
1485} 1528}
1486 1529
1487#if EV_PERIODICS 1530#if EV_PERIODIC_ENABLE
1488void 1531void
1489ev_periodic_start (EV_P_ ev_periodic *w) 1532ev_periodic_start (EV_P_ ev_periodic *w)
1490{ 1533{
1491 if (expect_false (ev_is_active (w))) 1534 if (expect_false (ev_is_active (w)))
1492 return; 1535 return;
… …
1532 /* TODO: use adjustheap and recalculation */ 1575 /* TODO: use adjustheap and recalculation */
1533 ev_periodic_stop (EV_A_ w); 1576 ev_periodic_stop (EV_A_ w);
1534 ev_periodic_start (EV_A_ w); 1577 ev_periodic_start (EV_A_ w);
1535} 1578}
1536#endif 1579#endif
1537
1538void
1539ev_idle_start (EV_P_ ev_idle *w)
1540{
1541 if (expect_false (ev_is_active (w)))
1542 return;
1543
1544 ev_start (EV_A_ (W)w, ++idlecnt);
1545 array_needsize (ev_idle *, idles, idlemax, idlecnt, EMPTY2);
1546 idles [idlecnt - 1] = w;
1547}
1548
1549void
1550ev_idle_stop (EV_P_ ev_idle *w)
1551{
1552 ev_clear_pending (EV_A_ (W)w);
1553 if (expect_false (!ev_is_active (w)))
1554 return;
1555
1556 idles [((W)w)->active - 1] = idles [--idlecnt];
1557 ev_stop (EV_A_ (W)w);
1558}
1559
1560void
1561ev_prepare_start (EV_P_ ev_prepare *w)
1562{
1563 if (expect_false (ev_is_active (w)))
1564 return;
1565
1566 ev_start (EV_A_ (W)w, ++preparecnt);
1567 array_needsize (ev_prepare *, prepares, preparemax, preparecnt, EMPTY2);
1568 prepares [preparecnt - 1] = w;
1569}
1570
1571void
1572ev_prepare_stop (EV_P_ ev_prepare *w)
1573{
1574 ev_clear_pending (EV_A_ (W)w);
1575 if (expect_false (!ev_is_active (w)))
1576 return;
1577
1578 prepares [((W)w)->active - 1] = prepares [--preparecnt];
1579 ev_stop (EV_A_ (W)w);
1580}
1581
1582void
1583ev_check_start (EV_P_ ev_check *w)
1584{
1585 if (expect_false (ev_is_active (w)))
1586 return;
1587
1588 ev_start (EV_A_ (W)w, ++checkcnt);
1589 array_needsize (ev_check *, checks, checkmax, checkcnt, EMPTY2);
1590 checks [checkcnt - 1] = w;
1591}
1592
1593void
1594ev_check_stop (EV_P_ ev_check *w)
1595{
1596 ev_clear_pending (EV_A_ (W)w);
1597 if (expect_false (!ev_is_active (w)))
1598 return;
1599
1600 checks [((W)w)->active - 1] = checks [--checkcnt];
1601 ev_stop (EV_A_ (W)w);
1602}
1603 1580
1604#ifndef SA_RESTART 1581#ifndef SA_RESTART
1605# define SA_RESTART 0 1582# define SA_RESTART 0
1606#endif 1583#endif
1607 1584
… …
1656#endif 1633#endif
1657 if (expect_false (ev_is_active (w))) 1634 if (expect_false (ev_is_active (w)))
1658 return; 1635 return;
1659 1636
1660 ev_start (EV_A_ (W)w, 1); 1637 ev_start (EV_A_ (W)w, 1);
1661 wlist_add ((WL *)&childs [w->pid & (PID_HASHSIZE - 1)], (WL)w); 1638 wlist_add ((WL *)&childs [w->pid & (EV_PID_HASHSIZE - 1)], (WL)w);
1662} 1639}
1663 1640
1664void 1641void
1665ev_child_stop (EV_P_ ev_child *w) 1642ev_child_stop (EV_P_ ev_child *w)
1666{ 1643{
1667 ev_clear_pending (EV_A_ (W)w); 1644 ev_clear_pending (EV_A_ (W)w);
1668 if (expect_false (!ev_is_active (w))) 1645 if (expect_false (!ev_is_active (w)))
1669 return; 1646 return;
1670 1647
1671 wlist_del ((WL *)&childs [w->pid & (PID_HASHSIZE - 1)], (WL)w); 1648 wlist_del ((WL *)&childs [w->pid & (EV_PID_HASHSIZE - 1)], (WL)w);
1672 ev_stop (EV_A_ (W)w); 1649 ev_stop (EV_A_ (W)w);
1673} 1650}
1674 1651
1675#if EV_MULTIPLICITY 1652#if EV_STAT_ENABLE
1653
1654# ifdef _WIN32
1655# undef lstat
1656# define lstat(a,b) _stati64 (a,b)
1657# endif
1658
1659#define DEF_STAT_INTERVAL 5.0074891
1660#define MIN_STAT_INTERVAL 0.1074891
1661
1676void 1662void
1663ev_stat_stat (EV_P_ ev_stat *w)
1664{
1665 if (lstat (w->path, &w->attr) < 0)
1666 w->attr.st_nlink = 0;
1667 else if (!w->attr.st_nlink)
1668 w->attr.st_nlink = 1;
1669}
1670
1671static void
1672stat_timer_cb (EV_P_ ev_timer *w_, int revents)
1673{
1674 ev_stat *w = (ev_stat *)(((char *)w_) - offsetof (ev_stat, timer));
1675
1676 /* we copy this here each the time so that */
1677 /* prev has the old value when the callback gets invoked */
1678 w->prev = w->attr;
1679 ev_stat_stat (EV_A_ w);
1680
1681 if (memcmp (&w->prev, &w->attr, sizeof (ev_statdata)))
1682 ev_feed_event (EV_A_ w, EV_STAT);
1683}
1684
1685void
1686ev_stat_start (EV_P_ ev_stat *w)
1687{
1688 if (expect_false (ev_is_active (w)))
1689 return;
1690
1691 /* since we use memcmp, we need to clear any padding data etc. */
1692 memset (&w->prev, 0, sizeof (ev_statdata));
1693 memset (&w->attr, 0, sizeof (ev_statdata));
1694
1695 ev_stat_stat (EV_A_ w);
1696
1697 if (w->interval < MIN_STAT_INTERVAL)
1698 w->interval = w->interval ? MIN_STAT_INTERVAL : DEF_STAT_INTERVAL;
1699
1700 ev_timer_init (&w->timer, stat_timer_cb, w->interval, w->interval);
1701 ev_set_priority (&w->timer, ev_priority (w));
1702 ev_timer_start (EV_A_ &w->timer);
1703
1704 ev_start (EV_A_ (W)w, 1);
1705}
1706
1707void
1708ev_stat_stop (EV_P_ ev_stat *w)
1709{
1710 ev_clear_pending (EV_A_ (W)w);
1711 if (expect_false (!ev_is_active (w)))
1712 return;
1713
1714 ev_timer_stop (EV_A_ &w->timer);
1715
1716 ev_stop (EV_A_ (W)w);
1717}
1718#endif
1719
1720void
1721ev_idle_start (EV_P_ ev_idle *w)
1722{
1723 if (expect_false (ev_is_active (w)))
1724 return;
1725
1726 ev_start (EV_A_ (W)w, ++idlecnt);
1727 array_needsize (ev_idle *, idles, idlemax, idlecnt, EMPTY2);
1728 idles [idlecnt - 1] = w;
1729}
1730
1731void
1732ev_idle_stop (EV_P_ ev_idle *w)
1733{
1734 ev_clear_pending (EV_A_ (W)w);
1735 if (expect_false (!ev_is_active (w)))
1736 return;
1737
1738 {
1739 int active = ((W)w)->active;
1740 idles [active - 1] = idles [--idlecnt];
1741 ((W)idles [active - 1])->active = active;
1742 }
1743
1744 ev_stop (EV_A_ (W)w);
1745}
1746
1747void
1748ev_prepare_start (EV_P_ ev_prepare *w)
1749{
1750 if (expect_false (ev_is_active (w)))
1751 return;
1752
1753 ev_start (EV_A_ (W)w, ++preparecnt);
1754 array_needsize (ev_prepare *, prepares, preparemax, preparecnt, EMPTY2);
1755 prepares [preparecnt - 1] = w;
1756}
1757
1758void
1759ev_prepare_stop (EV_P_ ev_prepare *w)
1760{
1761 ev_clear_pending (EV_A_ (W)w);
1762 if (expect_false (!ev_is_active (w)))
1763 return;
1764
1765 {
1766 int active = ((W)w)->active;
1767 prepares [active - 1] = prepares [--preparecnt];
1768 ((W)prepares [active - 1])->active = active;
1769 }
1770
1771 ev_stop (EV_A_ (W)w);
1772}
1773
1774void
1775ev_check_start (EV_P_ ev_check *w)
1776{
1777 if (expect_false (ev_is_active (w)))
1778 return;
1779
1780 ev_start (EV_A_ (W)w, ++checkcnt);
1781 array_needsize (ev_check *, checks, checkmax, checkcnt, EMPTY2);
1782 checks [checkcnt - 1] = w;
1783}
1784
1785void
1786ev_check_stop (EV_P_ ev_check *w)
1787{
1788 ev_clear_pending (EV_A_ (W)w);
1789 if (expect_false (!ev_is_active (w)))
1790 return;
1791
1792 {
1793 int active = ((W)w)->active;
1794 checks [active - 1] = checks [--checkcnt];
1795 ((W)checks [active - 1])->active = active;
1796 }
1797
1798 ev_stop (EV_A_ (W)w);
1799}
1800
1801#if EV_EMBED_ENABLE
1802void noinline
1677ev_embed_loop (EV_P_ ev_embed *w) 1803ev_embed_sweep (EV_P_ ev_embed *w)
1678{ 1804{
1679 ev_loop (w->loop, EVLOOP_NONBLOCK); 1805 ev_loop (w->loop, EVLOOP_NONBLOCK);
1680} 1806}
1681 1807
1682static void 1808static void
… …
1685 ev_embed *w = (ev_embed *)(((char *)io) - offsetof (ev_embed, io)); 1811 ev_embed *w = (ev_embed *)(((char *)io) - offsetof (ev_embed, io));
1686 1812
1687 if (ev_cb (w)) 1813 if (ev_cb (w))
1688 ev_feed_event (EV_A_ (W)w, EV_EMBED); 1814 ev_feed_event (EV_A_ (W)w, EV_EMBED);
1689 else 1815 else
1690 ev_embed_loop (loop, w); 1816 ev_embed_sweep (loop, w);
1691} 1817}
1692 1818
1693void 1819void
1694ev_embed_start (EV_P_ ev_embed *w) 1820ev_embed_start (EV_P_ ev_embed *w)
1695{ 1821{
… …
1702 ev_io_init (&w->io, embed_cb, backend_fd, EV_READ); 1828 ev_io_init (&w->io, embed_cb, backend_fd, EV_READ);
1703 } 1829 }
1704 1830
1705 ev_set_priority (&w->io, ev_priority (w)); 1831 ev_set_priority (&w->io, ev_priority (w));
1706 ev_io_start (EV_A_ &w->io); 1832 ev_io_start (EV_A_ &w->io);
1833
1707 ev_start (EV_A_ (W)w, 1); 1834 ev_start (EV_A_ (W)w, 1);
1708} 1835}
1709 1836
1710void 1837void
1711ev_embed_stop (EV_P_ ev_embed *w) 1838ev_embed_stop (EV_P_ ev_embed *w)
… …
1713 ev_clear_pending (EV_A_ (W)w); 1840 ev_clear_pending (EV_A_ (W)w);
1714 if (expect_false (!ev_is_active (w))) 1841 if (expect_false (!ev_is_active (w)))
1715 return; 1842 return;
1716 1843
1717 ev_io_stop (EV_A_ &w->io); 1844 ev_io_stop (EV_A_ &w->io);
1845
1846 ev_stop (EV_A_ (W)w);
1847}
1848#endif
1849
1850#if EV_FORK_ENABLE
1851void
1852ev_fork_start (EV_P_ ev_fork *w)
1853{
1854 if (expect_false (ev_is_active (w)))
1855 return;
1856
1857 ev_start (EV_A_ (W)w, ++forkcnt);
1858 array_needsize (ev_fork *, forks, forkmax, forkcnt, EMPTY2);
1859 forks [forkcnt - 1] = w;
1860}
1861
1862void
1863ev_fork_stop (EV_P_ ev_fork *w)
1864{
1865 ev_clear_pending (EV_A_ (W)w);
1866 if (expect_false (!ev_is_active (w)))
1867 return;
1868
1869 {
1870 int active = ((W)w)->active;
1871 forks [active - 1] = forks [--forkcnt];
1872 ((W)forks [active - 1])->active = active;
1873 }
1874
1718 ev_stop (EV_A_ (W)w); 1875 ev_stop (EV_A_ (W)w);
1719} 1876}
1720#endif 1877#endif
1721 1878
1722/*****************************************************************************/ 1879/*****************************************************************************/

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