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Comparing libev/ev.c (file contents):
Revision 1.139 by root, Sun Nov 25 09:24:37 2007 UTC vs.
Revision 1.157 by root, Wed Nov 28 20:58:32 2007 UTC

… …
94# else 94# else
95# define EV_USE_PORT 0 95# define EV_USE_PORT 0
96# endif 96# endif
97# endif 97# endif
98 98
99# ifndef EV_USE_INOTIFY
100# if HAVE_INOTIFY_INIT && HAVE_SYS_INOTIFY_H
101# define EV_USE_INOTIFY 1
102# else
103# define EV_USE_INOTIFY 0
104# endif
105# endif
106
99#endif 107#endif
100 108
101#include <math.h> 109#include <math.h>
102#include <stdlib.h> 110#include <stdlib.h>
103#include <fcntl.h> 111#include <fcntl.h>
… …
110#include <sys/types.h> 118#include <sys/types.h>
111#include <time.h> 119#include <time.h>
112 120
113#include <signal.h> 121#include <signal.h>
114 122
123#ifdef EV_H
124# include EV_H
125#else
126# include "ev.h"
127#endif
128
115#ifndef _WIN32 129#ifndef _WIN32
116# include <unistd.h>
117# include <sys/time.h> 130# include <sys/time.h>
118# include <sys/wait.h> 131# include <sys/wait.h>
132# include <unistd.h>
119#else 133#else
120# define WIN32_LEAN_AND_MEAN 134# define WIN32_LEAN_AND_MEAN
121# include <windows.h> 135# include <windows.h>
122# ifndef EV_SELECT_IS_WINSOCKET 136# ifndef EV_SELECT_IS_WINSOCKET
123# define EV_SELECT_IS_WINSOCKET 1 137# define EV_SELECT_IS_WINSOCKET 1
… …
156 170
157#ifndef EV_USE_PORT 171#ifndef EV_USE_PORT
158# define EV_USE_PORT 0 172# define EV_USE_PORT 0
159#endif 173#endif
160 174
175#ifndef EV_USE_INOTIFY
176# define EV_USE_INOTIFY 0
177#endif
178
179#ifndef EV_PID_HASHSIZE
180# if EV_MINIMAL
181# define EV_PID_HASHSIZE 1
182# else
183# define EV_PID_HASHSIZE 16
184# endif
185#endif
186
187#ifndef EV_INOTIFY_HASHSIZE
188# if EV_MINIMAL
189# define EV_INOTIFY_HASHSIZE 1
190# else
191# define EV_INOTIFY_HASHSIZE 16
192# endif
193#endif
194
161/**/ 195/**/
162 196
163#ifndef CLOCK_MONOTONIC 197#ifndef CLOCK_MONOTONIC
164# undef EV_USE_MONOTONIC 198# undef EV_USE_MONOTONIC
165# define EV_USE_MONOTONIC 0 199# define EV_USE_MONOTONIC 0
… …
172 206
173#if EV_SELECT_IS_WINSOCKET 207#if EV_SELECT_IS_WINSOCKET
174# include <winsock.h> 208# include <winsock.h>
175#endif 209#endif
176 210
211#if !EV_STAT_ENABLE
212# define EV_USE_INOTIFY 0
213#endif
214
215#if EV_USE_INOTIFY
216# include <sys/inotify.h>
217#endif
218
177/**/ 219/**/
178 220
179#define MIN_TIMEJUMP 1. /* minimum timejump that gets detected (if monotonic clock available) */ 221#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) */ 222#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 */ 223/*#define CLEANUP_INTERVAL (MAX_BLOCKTIME * 5.) /* how often to try to free memory and re-check fds */
183
184#ifdef EV_H
185# include EV_H
186#else
187# include "ev.h"
188#endif
189 224
190#if __GNUC__ >= 3 225#if __GNUC__ >= 3
191# define expect(expr,value) __builtin_expect ((expr),(value)) 226# define expect(expr,value) __builtin_expect ((expr),(value))
227# define inline_size static inline /* inline for codesize */
228# if EV_MINIMAL
229# define noinline __attribute__ ((noinline))
230# define inline_speed static noinline
231# else
232# define noinline
192# define inline static inline 233# define inline_speed static inline
234# endif
193#else 235#else
194# define expect(expr,value) (expr) 236# define expect(expr,value) (expr)
237# define inline_speed static
195# define inline static 238# define inline_size static
239# define noinline
196#endif 240#endif
197 241
198#define expect_false(expr) expect ((expr) != 0, 0) 242#define expect_false(expr) expect ((expr) != 0, 0)
199#define expect_true(expr) expect ((expr) != 0, 1) 243#define expect_true(expr) expect ((expr) != 0, 1)
200 244
… …
216 260
217/*****************************************************************************/ 261/*****************************************************************************/
218 262
219static void (*syserr_cb)(const char *msg); 263static void (*syserr_cb)(const char *msg);
220 264
265void
221void ev_set_syserr_cb (void (*cb)(const char *msg)) 266ev_set_syserr_cb (void (*cb)(const char *msg))
222{ 267{
223 syserr_cb = cb; 268 syserr_cb = cb;
224} 269}
225 270
226static void 271static void noinline
227syserr (const char *msg) 272syserr (const char *msg)
228{ 273{
229 if (!msg) 274 if (!msg)
230 msg = "(libev) system error"; 275 msg = "(libev) system error";
231 276
… …
238 } 283 }
239} 284}
240 285
241static void *(*alloc)(void *ptr, long size); 286static void *(*alloc)(void *ptr, long size);
242 287
288void
243void ev_set_allocator (void *(*cb)(void *ptr, long size)) 289ev_set_allocator (void *(*cb)(void *ptr, long size))
244{ 290{
245 alloc = cb; 291 alloc = cb;
246} 292}
247 293
248static void * 294inline_speed void *
249ev_realloc (void *ptr, long size) 295ev_realloc (void *ptr, long size)
250{ 296{
251 ptr = alloc ? alloc (ptr, size) : realloc (ptr, size); 297 ptr = alloc ? alloc (ptr, size) : realloc (ptr, size);
252 298
253 if (!ptr && size) 299 if (!ptr && size)
… …
277typedef struct 323typedef struct
278{ 324{
279 W w; 325 W w;
280 int events; 326 int events;
281} ANPENDING; 327} ANPENDING;
328
329#if EV_USE_INOTIFY
330typedef struct
331{
332 WL head;
333} ANFS;
334#endif
282 335
283#if EV_MULTIPLICITY 336#if EV_MULTIPLICITY
284 337
285 struct ev_loop 338 struct ev_loop
286 { 339 {
… …
320 gettimeofday (&tv, 0); 373 gettimeofday (&tv, 0);
321 return tv.tv_sec + tv.tv_usec * 1e-6; 374 return tv.tv_sec + tv.tv_usec * 1e-6;
322#endif 375#endif
323} 376}
324 377
325inline ev_tstamp 378ev_tstamp inline_size
326get_clock (void) 379get_clock (void)
327{ 380{
328#if EV_USE_MONOTONIC 381#if EV_USE_MONOTONIC
329 if (expect_true (have_monotonic)) 382 if (expect_true (have_monotonic))
330 { 383 {
… …
373#define array_free(stem, idx) \ 426#define array_free(stem, idx) \
374 ev_free (stem ## s idx); stem ## cnt idx = stem ## max idx = 0; 427 ev_free (stem ## s idx); stem ## cnt idx = stem ## max idx = 0;
375 428
376/*****************************************************************************/ 429/*****************************************************************************/
377 430
378static void 431void 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) 432ev_feed_event (EV_P_ void *w, int revents)
393{ 433{
394 W w_ = (W)w; 434 W w_ = (W)w;
395 435
396 if (expect_false (w_->pending)) 436 if (expect_false (w_->pending))
… …
403 array_needsize (ANPENDING, pendings [ABSPRI (w_)], pendingmax [ABSPRI (w_)], pendingcnt [ABSPRI (w_)], EMPTY2); 443 array_needsize (ANPENDING, pendings [ABSPRI (w_)], pendingmax [ABSPRI (w_)], pendingcnt [ABSPRI (w_)], EMPTY2);
404 pendings [ABSPRI (w_)][w_->pending - 1].w = w_; 444 pendings [ABSPRI (w_)][w_->pending - 1].w = w_;
405 pendings [ABSPRI (w_)][w_->pending - 1].events = revents; 445 pendings [ABSPRI (w_)][w_->pending - 1].events = revents;
406} 446}
407 447
408static void 448void inline_size
409queue_events (EV_P_ W *events, int eventcnt, int type) 449queue_events (EV_P_ W *events, int eventcnt, int type)
410{ 450{
411 int i; 451 int i;
412 452
413 for (i = 0; i < eventcnt; ++i) 453 for (i = 0; i < eventcnt; ++i)
414 ev_feed_event (EV_A_ events [i], type); 454 ev_feed_event (EV_A_ events [i], type);
415} 455}
416 456
417inline void 457/*****************************************************************************/
458
459void inline_size
460anfds_init (ANFD *base, int count)
461{
462 while (count--)
463 {
464 base->head = 0;
465 base->events = EV_NONE;
466 base->reify = 0;
467
468 ++base;
469 }
470}
471
472void inline_speed
418fd_event (EV_P_ int fd, int revents) 473fd_event (EV_P_ int fd, int revents)
419{ 474{
420 ANFD *anfd = anfds + fd; 475 ANFD *anfd = anfds + fd;
421 ev_io *w; 476 ev_io *w;
422 477
… …
433ev_feed_fd_event (EV_P_ int fd, int revents) 488ev_feed_fd_event (EV_P_ int fd, int revents)
434{ 489{
435 fd_event (EV_A_ fd, revents); 490 fd_event (EV_A_ fd, revents);
436} 491}
437 492
438/*****************************************************************************/ 493void inline_size
439
440inline void
441fd_reify (EV_P) 494fd_reify (EV_P)
442{ 495{
443 int i; 496 int i;
444 497
445 for (i = 0; i < fdchangecnt; ++i) 498 for (i = 0; i < fdchangecnt; ++i)
… …
469 } 522 }
470 523
471 fdchangecnt = 0; 524 fdchangecnt = 0;
472} 525}
473 526
474static void 527void inline_size
475fd_change (EV_P_ int fd) 528fd_change (EV_P_ int fd)
476{ 529{
477 if (expect_false (anfds [fd].reify)) 530 if (expect_false (anfds [fd].reify))
478 return; 531 return;
479 532
… …
482 ++fdchangecnt; 535 ++fdchangecnt;
483 array_needsize (int, fdchanges, fdchangemax, fdchangecnt, EMPTY2); 536 array_needsize (int, fdchanges, fdchangemax, fdchangecnt, EMPTY2);
484 fdchanges [fdchangecnt - 1] = fd; 537 fdchanges [fdchangecnt - 1] = fd;
485} 538}
486 539
487static void 540void inline_speed
488fd_kill (EV_P_ int fd) 541fd_kill (EV_P_ int fd)
489{ 542{
490 ev_io *w; 543 ev_io *w;
491 544
492 while ((w = (ev_io *)anfds [fd].head)) 545 while ((w = (ev_io *)anfds [fd].head))
… …
494 ev_io_stop (EV_A_ w); 547 ev_io_stop (EV_A_ w);
495 ev_feed_event (EV_A_ (W)w, EV_ERROR | EV_READ | EV_WRITE); 548 ev_feed_event (EV_A_ (W)w, EV_ERROR | EV_READ | EV_WRITE);
496 } 549 }
497} 550}
498 551
499inline int 552int inline_size
500fd_valid (int fd) 553fd_valid (int fd)
501{ 554{
502#ifdef _WIN32 555#ifdef _WIN32
503 return _get_osfhandle (fd) != -1; 556 return _get_osfhandle (fd) != -1;
504#else 557#else
505 return fcntl (fd, F_GETFD) != -1; 558 return fcntl (fd, F_GETFD) != -1;
506#endif 559#endif
507} 560}
508 561
509/* called on EBADF to verify fds */ 562/* called on EBADF to verify fds */
510static void 563static void noinline
511fd_ebadf (EV_P) 564fd_ebadf (EV_P)
512{ 565{
513 int fd; 566 int fd;
514 567
515 for (fd = 0; fd < anfdmax; ++fd) 568 for (fd = 0; fd < anfdmax; ++fd)
… …
517 if (!fd_valid (fd) == -1 && errno == EBADF) 570 if (!fd_valid (fd) == -1 && errno == EBADF)
518 fd_kill (EV_A_ fd); 571 fd_kill (EV_A_ fd);
519} 572}
520 573
521/* called on ENOMEM in select/poll to kill some fds and retry */ 574/* called on ENOMEM in select/poll to kill some fds and retry */
522static void 575static void noinline
523fd_enomem (EV_P) 576fd_enomem (EV_P)
524{ 577{
525 int fd; 578 int fd;
526 579
527 for (fd = anfdmax; fd--; ) 580 for (fd = anfdmax; fd--; )
… …
531 return; 584 return;
532 } 585 }
533} 586}
534 587
535/* usually called after fork if backend needs to re-arm all fds from scratch */ 588/* usually called after fork if backend needs to re-arm all fds from scratch */
536static void 589static void noinline
537fd_rearm_all (EV_P) 590fd_rearm_all (EV_P)
538{ 591{
539 int fd; 592 int fd;
540 593
541 /* this should be highly optimised to not do anything but set a flag */
542 for (fd = 0; fd < anfdmax; ++fd) 594 for (fd = 0; fd < anfdmax; ++fd)
543 if (anfds [fd].events) 595 if (anfds [fd].events)
544 { 596 {
545 anfds [fd].events = 0; 597 anfds [fd].events = 0;
546 fd_change (EV_A_ fd); 598 fd_change (EV_A_ fd);
547 } 599 }
548} 600}
549 601
550/*****************************************************************************/ 602/*****************************************************************************/
551 603
552static void 604void inline_speed
553upheap (WT *heap, int k) 605upheap (WT *heap, int k)
554{ 606{
555 WT w = heap [k]; 607 WT w = heap [k];
556 608
557 while (k && heap [k >> 1]->at > w->at) 609 while (k && heap [k >> 1]->at > w->at)
… …
564 heap [k] = w; 616 heap [k] = w;
565 ((W)heap [k])->active = k + 1; 617 ((W)heap [k])->active = k + 1;
566 618
567} 619}
568 620
569static void 621void inline_speed
570downheap (WT *heap, int N, int k) 622downheap (WT *heap, int N, int k)
571{ 623{
572 WT w = heap [k]; 624 WT w = heap [k];
573 625
574 while (k < (N >> 1)) 626 while (k < (N >> 1))
… …
588 640
589 heap [k] = w; 641 heap [k] = w;
590 ((W)heap [k])->active = k + 1; 642 ((W)heap [k])->active = k + 1;
591} 643}
592 644
593inline void 645void inline_size
594adjustheap (WT *heap, int N, int k) 646adjustheap (WT *heap, int N, int k)
595{ 647{
596 upheap (heap, k); 648 upheap (heap, k);
597 downheap (heap, N, k); 649 downheap (heap, N, k);
598} 650}
… …
610 662
611static int sigpipe [2]; 663static int sigpipe [2];
612static sig_atomic_t volatile gotsig; 664static sig_atomic_t volatile gotsig;
613static ev_io sigev; 665static ev_io sigev;
614 666
615static void 667void inline_size
616signals_init (ANSIG *base, int count) 668signals_init (ANSIG *base, int count)
617{ 669{
618 while (count--) 670 while (count--)
619 { 671 {
620 base->head = 0; 672 base->head = 0;
… …
640 write (sigpipe [1], &signum, 1); 692 write (sigpipe [1], &signum, 1);
641 errno = old_errno; 693 errno = old_errno;
642 } 694 }
643} 695}
644 696
645void 697void noinline
646ev_feed_signal_event (EV_P_ int signum) 698ev_feed_signal_event (EV_P_ int signum)
647{ 699{
648 WL w; 700 WL w;
649 701
650#if EV_MULTIPLICITY 702#if EV_MULTIPLICITY
… …
673 for (signum = signalmax; signum--; ) 725 for (signum = signalmax; signum--; )
674 if (signals [signum].gotsig) 726 if (signals [signum].gotsig)
675 ev_feed_signal_event (EV_A_ signum + 1); 727 ev_feed_signal_event (EV_A_ signum + 1);
676} 728}
677 729
678static void 730void inline_size
679fd_intern (int fd) 731fd_intern (int fd)
680{ 732{
681#ifdef _WIN32 733#ifdef _WIN32
682 int arg = 1; 734 int arg = 1;
683 ioctlsocket (_get_osfhandle (fd), FIONBIO, &arg); 735 ioctlsocket (_get_osfhandle (fd), FIONBIO, &arg);
… …
685 fcntl (fd, F_SETFD, FD_CLOEXEC); 737 fcntl (fd, F_SETFD, FD_CLOEXEC);
686 fcntl (fd, F_SETFL, O_NONBLOCK); 738 fcntl (fd, F_SETFL, O_NONBLOCK);
687#endif 739#endif
688} 740}
689 741
690static void 742static void noinline
691siginit (EV_P) 743siginit (EV_P)
692{ 744{
693 fd_intern (sigpipe [0]); 745 fd_intern (sigpipe [0]);
694 fd_intern (sigpipe [1]); 746 fd_intern (sigpipe [1]);
695 747
… …
698 ev_unref (EV_A); /* child watcher should not keep loop alive */ 750 ev_unref (EV_A); /* child watcher should not keep loop alive */
699} 751}
700 752
701/*****************************************************************************/ 753/*****************************************************************************/
702 754
703static ev_child *childs [PID_HASHSIZE]; 755static ev_child *childs [EV_PID_HASHSIZE];
704 756
705#ifndef _WIN32 757#ifndef _WIN32
706 758
707static ev_signal childev; 759static ev_signal childev;
708 760
709#ifndef WCONTINUED 761void inline_speed
710# define WCONTINUED 0
711#endif
712
713static void
714child_reap (EV_P_ ev_signal *sw, int chain, int pid, int status) 762child_reap (EV_P_ ev_signal *sw, int chain, int pid, int status)
715{ 763{
716 ev_child *w; 764 ev_child *w;
717 765
718 for (w = (ev_child *)childs [chain & (PID_HASHSIZE - 1)]; w; w = (ev_child *)((WL)w)->next) 766 for (w = (ev_child *)childs [chain & (EV_PID_HASHSIZE - 1)]; w; w = (ev_child *)((WL)w)->next)
719 if (w->pid == pid || !w->pid) 767 if (w->pid == pid || !w->pid)
720 { 768 {
721 ev_priority (w) = ev_priority (sw); /* need to do it *now* */ 769 ev_priority (w) = ev_priority (sw); /* need to do it *now* */
722 w->rpid = pid; 770 w->rpid = pid;
723 w->rstatus = status; 771 w->rstatus = status;
724 ev_feed_event (EV_A_ (W)w, EV_CHILD); 772 ev_feed_event (EV_A_ (W)w, EV_CHILD);
725 } 773 }
726} 774}
727 775
776#ifndef WCONTINUED
777# define WCONTINUED 0
778#endif
779
728static void 780static void
729childcb (EV_P_ ev_signal *sw, int revents) 781childcb (EV_P_ ev_signal *sw, int revents)
730{ 782{
731 int pid, status; 783 int pid, status;
732 784
785 /* some systems define WCONTINUED but then fail to support it (linux 2.4) */
733 if (0 < (pid = waitpid (-1, &status, WNOHANG | WUNTRACED | WCONTINUED))) 786 if (0 >= (pid = waitpid (-1, &status, WNOHANG | WUNTRACED | WCONTINUED)))
734 { 787 if (!WCONTINUED
788 || errno != EINVAL
789 || 0 >= (pid = waitpid (-1, &status, WNOHANG | WUNTRACED)))
790 return;
791
735 /* make sure we are called again until all childs have been reaped */ 792 /* 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 */ 793 /* 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); 794 ev_feed_event (EV_A_ (W)sw, EV_SIGNAL);
738 795
739 child_reap (EV_A_ sw, pid, pid, status); 796 child_reap (EV_A_ sw, pid, pid, status);
797 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 */ 798 child_reap (EV_A_ sw, 0, pid, status); /* this might trigger a watcher twice, but feed_event catches that */
741 }
742} 799}
743 800
744#endif 801#endif
745 802
746/*****************************************************************************/ 803/*****************************************************************************/
… …
772{ 829{
773 return EV_VERSION_MINOR; 830 return EV_VERSION_MINOR;
774} 831}
775 832
776/* return true if we are running with elevated privileges and should ignore env variables */ 833/* return true if we are running with elevated privileges and should ignore env variables */
777static int 834int inline_size
778enable_secure (void) 835enable_secure (void)
779{ 836{
780#ifdef _WIN32 837#ifdef _WIN32
781 return 0; 838 return 0;
782#else 839#else
… …
829ev_backend (EV_P) 886ev_backend (EV_P)
830{ 887{
831 return backend; 888 return backend;
832} 889}
833 890
834static void 891static void noinline
835loop_init (EV_P_ unsigned int flags) 892loop_init (EV_P_ unsigned int flags)
836{ 893{
837 if (!backend) 894 if (!backend)
838 { 895 {
839#if EV_USE_MONOTONIC 896#if EV_USE_MONOTONIC
… …
856 913
857 if (!(flags & 0x0000ffffUL)) 914 if (!(flags & 0x0000ffffUL))
858 flags |= ev_recommended_backends (); 915 flags |= ev_recommended_backends ();
859 916
860 backend = 0; 917 backend = 0;
918 backend_fd = -1;
919#if EV_USE_INOTIFY
920 fs_fd = -2;
921#endif
922
861#if EV_USE_PORT 923#if EV_USE_PORT
862 if (!backend && (flags & EVBACKEND_PORT )) backend = port_init (EV_A_ flags); 924 if (!backend && (flags & EVBACKEND_PORT )) backend = port_init (EV_A_ flags);
863#endif 925#endif
864#if EV_USE_KQUEUE 926#if EV_USE_KQUEUE
865 if (!backend && (flags & EVBACKEND_KQUEUE)) backend = kqueue_init (EV_A_ flags); 927 if (!backend && (flags & EVBACKEND_KQUEUE)) backend = kqueue_init (EV_A_ flags);
… …
877 ev_init (&sigev, sigcb); 939 ev_init (&sigev, sigcb);
878 ev_set_priority (&sigev, EV_MAXPRI); 940 ev_set_priority (&sigev, EV_MAXPRI);
879 } 941 }
880} 942}
881 943
882static void 944static void noinline
883loop_destroy (EV_P) 945loop_destroy (EV_P)
884{ 946{
885 int i; 947 int i;
948
949#if EV_USE_INOTIFY
950 if (fs_fd >= 0)
951 close (fs_fd);
952#endif
953
954 if (backend_fd >= 0)
955 close (backend_fd);
886 956
887#if EV_USE_PORT 957#if EV_USE_PORT
888 if (backend == EVBACKEND_PORT ) port_destroy (EV_A); 958 if (backend == EVBACKEND_PORT ) port_destroy (EV_A);
889#endif 959#endif
890#if EV_USE_KQUEUE 960#if EV_USE_KQUEUE
… …
904 array_free (pending, [i]); 974 array_free (pending, [i]);
905 975
906 /* have to use the microsoft-never-gets-it-right macro */ 976 /* have to use the microsoft-never-gets-it-right macro */
907 array_free (fdchange, EMPTY0); 977 array_free (fdchange, EMPTY0);
908 array_free (timer, EMPTY0); 978 array_free (timer, EMPTY0);
909#if EV_PERIODICS 979#if EV_PERIODIC_ENABLE
910 array_free (periodic, EMPTY0); 980 array_free (periodic, EMPTY0);
911#endif 981#endif
912 array_free (idle, EMPTY0); 982 array_free (idle, EMPTY0);
913 array_free (prepare, EMPTY0); 983 array_free (prepare, EMPTY0);
914 array_free (check, EMPTY0); 984 array_free (check, EMPTY0);
915 985
916 backend = 0; 986 backend = 0;
917} 987}
918 988
919static void 989void inline_size infy_fork (EV_P);
990
991void inline_size
920loop_fork (EV_P) 992loop_fork (EV_P)
921{ 993{
922#if EV_USE_PORT 994#if EV_USE_PORT
923 if (backend == EVBACKEND_PORT ) port_fork (EV_A); 995 if (backend == EVBACKEND_PORT ) port_fork (EV_A);
924#endif 996#endif
925#if EV_USE_KQUEUE 997#if EV_USE_KQUEUE
926 if (backend == EVBACKEND_KQUEUE) kqueue_fork (EV_A); 998 if (backend == EVBACKEND_KQUEUE) kqueue_fork (EV_A);
927#endif 999#endif
928#if EV_USE_EPOLL 1000#if EV_USE_EPOLL
929 if (backend == EVBACKEND_EPOLL ) epoll_fork (EV_A); 1001 if (backend == EVBACKEND_EPOLL ) epoll_fork (EV_A);
1002#endif
1003#if EV_USE_INOTIFY
1004 infy_fork (EV_A);
930#endif 1005#endif
931 1006
932 if (ev_is_active (&sigev)) 1007 if (ev_is_active (&sigev))
933 { 1008 {
934 /* default loop */ 1009 /* default loop */
… …
1050 postfork = 1; 1125 postfork = 1;
1051} 1126}
1052 1127
1053/*****************************************************************************/ 1128/*****************************************************************************/
1054 1129
1055static int 1130int inline_size
1056any_pending (EV_P) 1131any_pending (EV_P)
1057{ 1132{
1058 int pri; 1133 int pri;
1059 1134
1060 for (pri = NUMPRI; pri--; ) 1135 for (pri = NUMPRI; pri--; )
… …
1062 return 1; 1137 return 1;
1063 1138
1064 return 0; 1139 return 0;
1065} 1140}
1066 1141
1067inline void 1142void inline_speed
1068call_pending (EV_P) 1143call_pending (EV_P)
1069{ 1144{
1070 int pri; 1145 int pri;
1071 1146
1072 for (pri = NUMPRI; pri--; ) 1147 for (pri = NUMPRI; pri--; )
… …
1074 { 1149 {
1075 ANPENDING *p = pendings [pri] + --pendingcnt [pri]; 1150 ANPENDING *p = pendings [pri] + --pendingcnt [pri];
1076 1151
1077 if (expect_true (p->w)) 1152 if (expect_true (p->w))
1078 { 1153 {
1079 assert (("non-pending watcher on pending list", p->w->pending)); 1154 /*assert (("non-pending watcher on pending list", p->w->pending));*/
1080 1155
1081 p->w->pending = 0; 1156 p->w->pending = 0;
1082 EV_CB_INVOKE (p->w, p->events); 1157 EV_CB_INVOKE (p->w, p->events);
1083 } 1158 }
1084 } 1159 }
1085} 1160}
1086 1161
1087inline void 1162void inline_size
1088timers_reify (EV_P) 1163timers_reify (EV_P)
1089{ 1164{
1090 while (timercnt && ((WT)timers [0])->at <= mn_now) 1165 while (timercnt && ((WT)timers [0])->at <= mn_now)
1091 { 1166 {
1092 ev_timer *w = timers [0]; 1167 ev_timer *w = timers [0];
1093 1168
1094 assert (("inactive timer on timer heap detected", ev_is_active (w))); 1169 /*assert (("inactive timer on timer heap detected", ev_is_active (w)));*/
1095 1170
1096 /* first reschedule or stop timer */ 1171 /* first reschedule or stop timer */
1097 if (w->repeat) 1172 if (w->repeat)
1098 { 1173 {
1099 assert (("negative ev_timer repeat value found while processing timers", w->repeat > 0.)); 1174 assert (("negative ev_timer repeat value found while processing timers", w->repeat > 0.));
… …
1109 1184
1110 ev_feed_event (EV_A_ (W)w, EV_TIMEOUT); 1185 ev_feed_event (EV_A_ (W)w, EV_TIMEOUT);
1111 } 1186 }
1112} 1187}
1113 1188
1114#if EV_PERIODICS 1189#if EV_PERIODIC_ENABLE
1115inline void 1190void inline_size
1116periodics_reify (EV_P) 1191periodics_reify (EV_P)
1117{ 1192{
1118 while (periodiccnt && ((WT)periodics [0])->at <= ev_rt_now) 1193 while (periodiccnt && ((WT)periodics [0])->at <= ev_rt_now)
1119 { 1194 {
1120 ev_periodic *w = periodics [0]; 1195 ev_periodic *w = periodics [0];
1121 1196
1122 assert (("inactive timer on periodic heap detected", ev_is_active (w))); 1197 /*assert (("inactive timer on periodic heap detected", ev_is_active (w)));*/
1123 1198
1124 /* first reschedule or stop timer */ 1199 /* first reschedule or stop timer */
1125 if (w->reschedule_cb) 1200 if (w->reschedule_cb)
1126 { 1201 {
1127 ((WT)w)->at = w->reschedule_cb (w, ev_rt_now + 0.0001); 1202 ((WT)w)->at = w->reschedule_cb (w, ev_rt_now + 0.0001);
… …
1139 1214
1140 ev_feed_event (EV_A_ (W)w, EV_PERIODIC); 1215 ev_feed_event (EV_A_ (W)w, EV_PERIODIC);
1141 } 1216 }
1142} 1217}
1143 1218
1144static void 1219static void noinline
1145periodics_reschedule (EV_P) 1220periodics_reschedule (EV_P)
1146{ 1221{
1147 int i; 1222 int i;
1148 1223
1149 /* adjust periodics after time jump */ 1224 /* adjust periodics after time jump */
… …
1161 for (i = periodiccnt >> 1; i--; ) 1236 for (i = periodiccnt >> 1; i--; )
1162 downheap ((WT *)periodics, periodiccnt, i); 1237 downheap ((WT *)periodics, periodiccnt, i);
1163} 1238}
1164#endif 1239#endif
1165 1240
1166inline int 1241int inline_size
1167time_update_monotonic (EV_P) 1242time_update_monotonic (EV_P)
1168{ 1243{
1169 mn_now = get_clock (); 1244 mn_now = get_clock ();
1170 1245
1171 if (expect_true (mn_now - now_floor < MIN_TIMEJUMP * .5)) 1246 if (expect_true (mn_now - now_floor < MIN_TIMEJUMP * .5))
… …
1179 ev_rt_now = ev_time (); 1254 ev_rt_now = ev_time ();
1180 return 1; 1255 return 1;
1181 } 1256 }
1182} 1257}
1183 1258
1184inline void 1259void inline_size
1185time_update (EV_P) 1260time_update (EV_P)
1186{ 1261{
1187 int i; 1262 int i;
1188 1263
1189#if EV_USE_MONOTONIC 1264#if EV_USE_MONOTONIC
… …
1194 ev_tstamp odiff = rtmn_diff; 1269 ev_tstamp odiff = rtmn_diff;
1195 1270
1196 /* loop a few times, before making important decisions. 1271 /* loop a few times, before making important decisions.
1197 * on the choice of "4": one iteration isn't enough, 1272 * on the choice of "4": one iteration isn't enough,
1198 * in case we get preempted during the calls to 1273 * in case we get preempted during the calls to
1199 * ev_time and get_clock. a second call is almost guarenteed 1274 * ev_time and get_clock. a second call is almost guaranteed
1200 * to succeed in that case, though. and looping a few more times 1275 * to succeed in that case, though. and looping a few more times
1201 * doesn't hurt either as we only do this on time-jumps or 1276 * doesn't hurt either as we only do this on time-jumps or
1202 * in the unlikely event of getting preempted here. 1277 * in the unlikely event of having been preempted here.
1203 */ 1278 */
1204 for (i = 4; --i; ) 1279 for (i = 4; --i; )
1205 { 1280 {
1206 rtmn_diff = ev_rt_now - mn_now; 1281 rtmn_diff = ev_rt_now - mn_now;
1207 1282
… …
1211 ev_rt_now = ev_time (); 1286 ev_rt_now = ev_time ();
1212 mn_now = get_clock (); 1287 mn_now = get_clock ();
1213 now_floor = mn_now; 1288 now_floor = mn_now;
1214 } 1289 }
1215 1290
1216# if EV_PERIODICS 1291# if EV_PERIODIC_ENABLE
1217 periodics_reschedule (EV_A); 1292 periodics_reschedule (EV_A);
1218# endif 1293# endif
1219 /* no timer adjustment, as the monotonic clock doesn't jump */ 1294 /* no timer adjustment, as the monotonic clock doesn't jump */
1220 /* timers_reschedule (EV_A_ rtmn_diff - odiff) */ 1295 /* timers_reschedule (EV_A_ rtmn_diff - odiff) */
1221 } 1296 }
… …
1225 { 1300 {
1226 ev_rt_now = ev_time (); 1301 ev_rt_now = ev_time ();
1227 1302
1228 if (expect_false (mn_now > ev_rt_now || mn_now < ev_rt_now - MAX_BLOCKTIME - MIN_TIMEJUMP)) 1303 if (expect_false (mn_now > ev_rt_now || mn_now < ev_rt_now - MAX_BLOCKTIME - MIN_TIMEJUMP))
1229 { 1304 {
1230#if EV_PERIODICS 1305#if EV_PERIODIC_ENABLE
1231 periodics_reschedule (EV_A); 1306 periodics_reschedule (EV_A);
1232#endif 1307#endif
1233 1308
1234 /* adjust timers. this is easy, as the offset is the same for all */ 1309 /* adjust timers. this is easy, as the offset is the same for all of them */
1235 for (i = 0; i < timercnt; ++i) 1310 for (i = 0; i < timercnt; ++i)
1236 ((WT)timers [i])->at += ev_rt_now - mn_now; 1311 ((WT)timers [i])->at += ev_rt_now - mn_now;
1237 } 1312 }
1238 1313
1239 mn_now = ev_rt_now; 1314 mn_now = ev_rt_now;
… …
1261 ? EVUNLOOP_ONE 1336 ? EVUNLOOP_ONE
1262 : EVUNLOOP_CANCEL; 1337 : EVUNLOOP_CANCEL;
1263 1338
1264 while (activecnt) 1339 while (activecnt)
1265 { 1340 {
1341#if EV_FORK_ENABLE
1342 /* we might have forked, so queue fork handlers */
1343 if (expect_false (postfork))
1344 if (forkcnt)
1345 {
1346 queue_events (EV_A_ (W *)forks, forkcnt, EV_FORK);
1347 call_pending (EV_A);
1348 }
1349#endif
1350
1266 /* queue check watchers (and execute them) */ 1351 /* queue check watchers (and execute them) */
1267 if (expect_false (preparecnt)) 1352 if (expect_false (preparecnt))
1268 { 1353 {
1269 queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE); 1354 queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE);
1270 call_pending (EV_A); 1355 call_pending (EV_A);
… …
1277 /* update fd-related kernel structures */ 1362 /* update fd-related kernel structures */
1278 fd_reify (EV_A); 1363 fd_reify (EV_A);
1279 1364
1280 /* calculate blocking time */ 1365 /* calculate blocking time */
1281 { 1366 {
1282 double block; 1367 ev_tstamp block;
1283 1368
1284 if (flags & EVLOOP_NONBLOCK || idlecnt) 1369 if (flags & EVLOOP_NONBLOCK || idlecnt)
1285 block = 0.; /* do not block at all */ 1370 block = 0.; /* do not block at all */
1286 else 1371 else
1287 { 1372 {
… …
1302 { 1387 {
1303 ev_tstamp to = ((WT)timers [0])->at - mn_now + backend_fudge; 1388 ev_tstamp to = ((WT)timers [0])->at - mn_now + backend_fudge;
1304 if (block > to) block = to; 1389 if (block > to) block = to;
1305 } 1390 }
1306 1391
1307#if EV_PERIODICS 1392#if EV_PERIODIC_ENABLE
1308 if (periodiccnt) 1393 if (periodiccnt)
1309 { 1394 {
1310 ev_tstamp to = ((WT)periodics [0])->at - ev_rt_now + backend_fudge; 1395 ev_tstamp to = ((WT)periodics [0])->at - ev_rt_now + backend_fudge;
1311 if (block > to) block = to; 1396 if (block > to) block = to;
1312 } 1397 }
… …
1321 /* update ev_rt_now, do magic */ 1406 /* update ev_rt_now, do magic */
1322 time_update (EV_A); 1407 time_update (EV_A);
1323 1408
1324 /* queue pending timers and reschedule them */ 1409 /* queue pending timers and reschedule them */
1325 timers_reify (EV_A); /* relative timers called last */ 1410 timers_reify (EV_A); /* relative timers called last */
1326#if EV_PERIODICS 1411#if EV_PERIODIC_ENABLE
1327 periodics_reify (EV_A); /* absolute timers called first */ 1412 periodics_reify (EV_A); /* absolute timers called first */
1328#endif 1413#endif
1329 1414
1330 /* queue idle watchers unless other events are pending */ 1415 /* queue idle watchers unless other events are pending */
1331 if (idlecnt && !any_pending (EV_A)) 1416 if (idlecnt && !any_pending (EV_A))
… …
1351 loop_done = how; 1436 loop_done = how;
1352} 1437}
1353 1438
1354/*****************************************************************************/ 1439/*****************************************************************************/
1355 1440
1356inline void 1441void inline_size
1357wlist_add (WL *head, WL elem) 1442wlist_add (WL *head, WL elem)
1358{ 1443{
1359 elem->next = *head; 1444 elem->next = *head;
1360 *head = elem; 1445 *head = elem;
1361} 1446}
1362 1447
1363inline void 1448void inline_size
1364wlist_del (WL *head, WL elem) 1449wlist_del (WL *head, WL elem)
1365{ 1450{
1366 while (*head) 1451 while (*head)
1367 { 1452 {
1368 if (*head == elem) 1453 if (*head == elem)
… …
1373 1458
1374 head = &(*head)->next; 1459 head = &(*head)->next;
1375 } 1460 }
1376} 1461}
1377 1462
1378inline void 1463void inline_speed
1379ev_clear_pending (EV_P_ W w) 1464ev_clear_pending (EV_P_ W w)
1380{ 1465{
1381 if (w->pending) 1466 if (w->pending)
1382 { 1467 {
1383 pendings [ABSPRI (w)][w->pending - 1].w = 0; 1468 pendings [ABSPRI (w)][w->pending - 1].w = 0;
1384 w->pending = 0; 1469 w->pending = 0;
1385 } 1470 }
1386} 1471}
1387 1472
1388inline void 1473void inline_speed
1389ev_start (EV_P_ W w, int active) 1474ev_start (EV_P_ W w, int active)
1390{ 1475{
1391 if (w->priority < EV_MINPRI) w->priority = EV_MINPRI; 1476 if (w->priority < EV_MINPRI) w->priority = EV_MINPRI;
1392 if (w->priority > EV_MAXPRI) w->priority = EV_MAXPRI; 1477 if (w->priority > EV_MAXPRI) w->priority = EV_MAXPRI;
1393 1478
1394 w->active = active; 1479 w->active = active;
1395 ev_ref (EV_A); 1480 ev_ref (EV_A);
1396} 1481}
1397 1482
1398inline void 1483void inline_size
1399ev_stop (EV_P_ W w) 1484ev_stop (EV_P_ W w)
1400{ 1485{
1401 ev_unref (EV_A); 1486 ev_unref (EV_A);
1402 w->active = 0; 1487 w->active = 0;
1403} 1488}
… …
1449 ev_start (EV_A_ (W)w, ++timercnt); 1534 ev_start (EV_A_ (W)w, ++timercnt);
1450 array_needsize (ev_timer *, timers, timermax, timercnt, EMPTY2); 1535 array_needsize (ev_timer *, timers, timermax, timercnt, EMPTY2);
1451 timers [timercnt - 1] = w; 1536 timers [timercnt - 1] = w;
1452 upheap ((WT *)timers, timercnt - 1); 1537 upheap ((WT *)timers, timercnt - 1);
1453 1538
1454 assert (("internal timer heap corruption", timers [((W)w)->active - 1] == w)); 1539 /*assert (("internal timer heap corruption", timers [((W)w)->active - 1] == w));*/
1455} 1540}
1456 1541
1457void 1542void
1458ev_timer_stop (EV_P_ ev_timer *w) 1543ev_timer_stop (EV_P_ ev_timer *w)
1459{ 1544{
… …
1461 if (expect_false (!ev_is_active (w))) 1546 if (expect_false (!ev_is_active (w)))
1462 return; 1547 return;
1463 1548
1464 assert (("internal timer heap corruption", timers [((W)w)->active - 1] == w)); 1549 assert (("internal timer heap corruption", timers [((W)w)->active - 1] == w));
1465 1550
1551 {
1552 int active = ((W)w)->active;
1553
1466 if (expect_true (((W)w)->active < timercnt--)) 1554 if (expect_true (--active < --timercnt))
1467 { 1555 {
1468 timers [((W)w)->active - 1] = timers [timercnt]; 1556 timers [active] = timers [timercnt];
1469 adjustheap ((WT *)timers, timercnt, ((W)w)->active - 1); 1557 adjustheap ((WT *)timers, timercnt, active);
1470 } 1558 }
1559 }
1471 1560
1472 ((WT)w)->at -= mn_now; 1561 ((WT)w)->at -= mn_now;
1473 1562
1474 ev_stop (EV_A_ (W)w); 1563 ev_stop (EV_A_ (W)w);
1475} 1564}
… …
1492 w->at = w->repeat; 1581 w->at = w->repeat;
1493 ev_timer_start (EV_A_ w); 1582 ev_timer_start (EV_A_ w);
1494 } 1583 }
1495} 1584}
1496 1585
1497#if EV_PERIODICS 1586#if EV_PERIODIC_ENABLE
1498void 1587void
1499ev_periodic_start (EV_P_ ev_periodic *w) 1588ev_periodic_start (EV_P_ ev_periodic *w)
1500{ 1589{
1501 if (expect_false (ev_is_active (w))) 1590 if (expect_false (ev_is_active (w)))
1502 return; 1591 return;
… …
1513 ev_start (EV_A_ (W)w, ++periodiccnt); 1602 ev_start (EV_A_ (W)w, ++periodiccnt);
1514 array_needsize (ev_periodic *, periodics, periodicmax, periodiccnt, EMPTY2); 1603 array_needsize (ev_periodic *, periodics, periodicmax, periodiccnt, EMPTY2);
1515 periodics [periodiccnt - 1] = w; 1604 periodics [periodiccnt - 1] = w;
1516 upheap ((WT *)periodics, periodiccnt - 1); 1605 upheap ((WT *)periodics, periodiccnt - 1);
1517 1606
1518 assert (("internal periodic heap corruption", periodics [((W)w)->active - 1] == w)); 1607 /*assert (("internal periodic heap corruption", periodics [((W)w)->active - 1] == w));*/
1519} 1608}
1520 1609
1521void 1610void
1522ev_periodic_stop (EV_P_ ev_periodic *w) 1611ev_periodic_stop (EV_P_ ev_periodic *w)
1523{ 1612{
… …
1525 if (expect_false (!ev_is_active (w))) 1614 if (expect_false (!ev_is_active (w)))
1526 return; 1615 return;
1527 1616
1528 assert (("internal periodic heap corruption", periodics [((W)w)->active - 1] == w)); 1617 assert (("internal periodic heap corruption", periodics [((W)w)->active - 1] == w));
1529 1618
1619 {
1620 int active = ((W)w)->active;
1621
1530 if (expect_true (((W)w)->active < periodiccnt--)) 1622 if (expect_true (--active < --periodiccnt))
1531 { 1623 {
1532 periodics [((W)w)->active - 1] = periodics [periodiccnt]; 1624 periodics [active] = periodics [periodiccnt];
1533 adjustheap ((WT *)periodics, periodiccnt, ((W)w)->active - 1); 1625 adjustheap ((WT *)periodics, periodiccnt, active);
1534 } 1626 }
1627 }
1535 1628
1536 ev_stop (EV_A_ (W)w); 1629 ev_stop (EV_A_ (W)w);
1537} 1630}
1538 1631
1539void 1632void
… …
1542 /* TODO: use adjustheap and recalculation */ 1635 /* TODO: use adjustheap and recalculation */
1543 ev_periodic_stop (EV_A_ w); 1636 ev_periodic_stop (EV_A_ w);
1544 ev_periodic_start (EV_A_ w); 1637 ev_periodic_start (EV_A_ w);
1545} 1638}
1546#endif 1639#endif
1547
1548void
1549ev_idle_start (EV_P_ ev_idle *w)
1550{
1551 if (expect_false (ev_is_active (w)))
1552 return;
1553
1554 ev_start (EV_A_ (W)w, ++idlecnt);
1555 array_needsize (ev_idle *, idles, idlemax, idlecnt, EMPTY2);
1556 idles [idlecnt - 1] = w;
1557}
1558
1559void
1560ev_idle_stop (EV_P_ ev_idle *w)
1561{
1562 ev_clear_pending (EV_A_ (W)w);
1563 if (expect_false (!ev_is_active (w)))
1564 return;
1565
1566 {
1567 int active = ((W)w)->active;
1568 idles [active - 1] = idles [--idlecnt];
1569 ((W)idles [active - 1])->active = active;
1570 }
1571
1572 ev_stop (EV_A_ (W)w);
1573}
1574
1575void
1576ev_prepare_start (EV_P_ ev_prepare *w)
1577{
1578 if (expect_false (ev_is_active (w)))
1579 return;
1580
1581 ev_start (EV_A_ (W)w, ++preparecnt);
1582 array_needsize (ev_prepare *, prepares, preparemax, preparecnt, EMPTY2);
1583 prepares [preparecnt - 1] = w;
1584}
1585
1586void
1587ev_prepare_stop (EV_P_ ev_prepare *w)
1588{
1589 ev_clear_pending (EV_A_ (W)w);
1590 if (expect_false (!ev_is_active (w)))
1591 return;
1592
1593 {
1594 int active = ((W)w)->active;
1595 prepares [active - 1] = prepares [--preparecnt];
1596 ((W)prepares [active - 1])->active = active;
1597 }
1598
1599 ev_stop (EV_A_ (W)w);
1600}
1601
1602void
1603ev_check_start (EV_P_ ev_check *w)
1604{
1605 if (expect_false (ev_is_active (w)))
1606 return;
1607
1608 ev_start (EV_A_ (W)w, ++checkcnt);
1609 array_needsize (ev_check *, checks, checkmax, checkcnt, EMPTY2);
1610 checks [checkcnt - 1] = w;
1611}
1612
1613void
1614ev_check_stop (EV_P_ ev_check *w)
1615{
1616 ev_clear_pending (EV_A_ (W)w);
1617 if (expect_false (!ev_is_active (w)))
1618 return;
1619
1620 {
1621 int active = ((W)w)->active;
1622 checks [active - 1] = checks [--checkcnt];
1623 ((W)checks [active - 1])->active = active;
1624 }
1625
1626 ev_stop (EV_A_ (W)w);
1627}
1628 1640
1629#ifndef SA_RESTART 1641#ifndef SA_RESTART
1630# define SA_RESTART 0 1642# define SA_RESTART 0
1631#endif 1643#endif
1632 1644
… …
1681#endif 1693#endif
1682 if (expect_false (ev_is_active (w))) 1694 if (expect_false (ev_is_active (w)))
1683 return; 1695 return;
1684 1696
1685 ev_start (EV_A_ (W)w, 1); 1697 ev_start (EV_A_ (W)w, 1);
1686 wlist_add ((WL *)&childs [w->pid & (PID_HASHSIZE - 1)], (WL)w); 1698 wlist_add ((WL *)&childs [w->pid & (EV_PID_HASHSIZE - 1)], (WL)w);
1687} 1699}
1688 1700
1689void 1701void
1690ev_child_stop (EV_P_ ev_child *w) 1702ev_child_stop (EV_P_ ev_child *w)
1691{ 1703{
1692 ev_clear_pending (EV_A_ (W)w); 1704 ev_clear_pending (EV_A_ (W)w);
1693 if (expect_false (!ev_is_active (w))) 1705 if (expect_false (!ev_is_active (w)))
1694 return; 1706 return;
1695 1707
1696 wlist_del ((WL *)&childs [w->pid & (PID_HASHSIZE - 1)], (WL)w); 1708 wlist_del ((WL *)&childs [w->pid & (EV_PID_HASHSIZE - 1)], (WL)w);
1697 ev_stop (EV_A_ (W)w); 1709 ev_stop (EV_A_ (W)w);
1698} 1710}
1699 1711
1700#if EV_MULTIPLICITY 1712#if EV_STAT_ENABLE
1713
1714# ifdef _WIN32
1715# undef lstat
1716# define lstat(a,b) _stati64 (a,b)
1717# endif
1718
1719#define DEF_STAT_INTERVAL 5.0074891
1720#define MIN_STAT_INTERVAL 0.1074891
1721
1722static void noinline stat_timer_cb (EV_P_ ev_timer *w_, int revents);
1723
1724#if EV_USE_INOTIFY
1725# define EV_INOTIFY_BUFSIZE 8192
1726
1727static void noinline
1728infy_add (EV_P_ ev_stat *w)
1729{
1730 w->wd = inotify_add_watch (fs_fd, w->path, IN_ATTRIB | IN_DELETE_SELF | IN_MOVE_SELF | IN_MODIFY | IN_DONT_FOLLOW | IN_MASK_ADD);
1731
1732 if (w->wd < 0)
1733 {
1734 ev_timer_start (EV_A_ &w->timer); /* this is not race-free, so we still need to recheck periodically */
1735
1736 /* monitor some parent directory for speedup hints */
1737 if ((errno == ENOENT || errno == EACCES) && strlen (w->path) < 4096)
1738 {
1739 char path [4096];
1740 strcpy (path, w->path);
1741
1742 do
1743 {
1744 int mask = IN_MASK_ADD | IN_DELETE_SELF | IN_MOVE_SELF
1745 | (errno == EACCES ? IN_ATTRIB : IN_CREATE | IN_MOVED_TO);
1746
1747 char *pend = strrchr (path, '/');
1748
1749 if (!pend)
1750 break; /* whoops, no '/', complain to your admin */
1751
1752 *pend = 0;
1753 w->wd = inotify_add_watch (fs_fd, path, mask);
1754 }
1755 while (w->wd < 0 && (errno == ENOENT || errno == EACCES));
1756 }
1757 }
1758 else
1759 ev_timer_stop (EV_A_ &w->timer); /* we can watch this in a race-free way */
1760
1761 if (w->wd >= 0)
1762 wlist_add (&fs_hash [w->wd & (EV_INOTIFY_HASHSIZE - 1)].head, (WL)w);
1763}
1764
1765static void noinline
1766infy_del (EV_P_ ev_stat *w)
1767{
1768 int slot;
1769 int wd = w->wd;
1770
1771 if (wd < 0)
1772 return;
1773
1774 w->wd = -2;
1775 slot = wd & (EV_INOTIFY_HASHSIZE - 1);
1776 wlist_del (&fs_hash [slot].head, (WL)w);
1777
1778 /* remove this watcher, if others are watching it, they will rearm */
1779 inotify_rm_watch (fs_fd, wd);
1780}
1781
1782static void noinline
1783infy_wd (EV_P_ int slot, int wd, struct inotify_event *ev)
1784{
1785 if (slot < 0)
1786 /* overflow, need to check for all hahs slots */
1787 for (slot = 0; slot < EV_INOTIFY_HASHSIZE; ++slot)
1788 infy_wd (EV_A_ slot, wd, ev);
1789 else
1790 {
1791 WL w_;
1792
1793 for (w_ = fs_hash [slot & (EV_INOTIFY_HASHSIZE - 1)].head; w_; )
1794 {
1795 ev_stat *w = (ev_stat *)w_;
1796 w_ = w_->next; /* lets us remove this watcher and all before it */
1797
1798 if (w->wd == wd || wd == -1)
1799 {
1800 if (ev->mask & (IN_IGNORED | IN_UNMOUNT | IN_DELETE_SELF))
1801 {
1802 w->wd = -1;
1803 infy_add (EV_A_ w); /* re-add, no matter what */
1804 }
1805
1806 stat_timer_cb (EV_A_ &w->timer, 0);
1807 }
1808 }
1809 }
1810}
1811
1812static void
1813infy_cb (EV_P_ ev_io *w, int revents)
1814{
1815 char buf [EV_INOTIFY_BUFSIZE];
1816 struct inotify_event *ev = (struct inotify_event *)buf;
1817 int ofs;
1818 int len = read (fs_fd, buf, sizeof (buf));
1819
1820 for (ofs = 0; ofs < len; ofs += sizeof (struct inotify_event) + ev->len)
1821 infy_wd (EV_A_ ev->wd, ev->wd, ev);
1822}
1823
1824void inline_size
1825infy_init (EV_P)
1826{
1827 if (fs_fd != -2)
1828 return;
1829
1830 fs_fd = inotify_init ();
1831
1832 if (fs_fd >= 0)
1833 {
1834 ev_io_init (&fs_w, infy_cb, fs_fd, EV_READ);
1835 ev_set_priority (&fs_w, EV_MAXPRI);
1836 ev_io_start (EV_A_ &fs_w);
1837 }
1838}
1839
1840void inline_size
1841infy_fork (EV_P)
1842{
1843 int slot;
1844
1845 if (fs_fd < 0)
1846 return;
1847
1848 close (fs_fd);
1849 fs_fd = inotify_init ();
1850
1851 for (slot = 0; slot < EV_INOTIFY_HASHSIZE; ++slot)
1852 {
1853 WL w_ = fs_hash [slot].head;
1854 fs_hash [slot].head = 0;
1855
1856 while (w_)
1857 {
1858 ev_stat *w = (ev_stat *)w_;
1859 w_ = w_->next; /* lets us add this watcher */
1860
1861 w->wd = -1;
1862
1863 if (fs_fd >= 0)
1864 infy_add (EV_A_ w); /* re-add, no matter what */
1865 else
1866 ev_timer_start (EV_A_ &w->timer);
1867 }
1868
1869 }
1870}
1871
1872#endif
1873
1701void 1874void
1875ev_stat_stat (EV_P_ ev_stat *w)
1876{
1877 if (lstat (w->path, &w->attr) < 0)
1878 w->attr.st_nlink = 0;
1879 else if (!w->attr.st_nlink)
1880 w->attr.st_nlink = 1;
1881}
1882
1883static void noinline
1884stat_timer_cb (EV_P_ ev_timer *w_, int revents)
1885{
1886 ev_stat *w = (ev_stat *)(((char *)w_) - offsetof (ev_stat, timer));
1887
1888 /* we copy this here each the time so that */
1889 /* prev has the old value when the callback gets invoked */
1890 w->prev = w->attr;
1891 ev_stat_stat (EV_A_ w);
1892
1893 /* memcmp doesn't work on netbsd, they.... do stuff to their struct stat */
1894 if (
1895 w->prev.st_dev != w->attr.st_dev
1896 || w->prev.st_ino != w->attr.st_ino
1897 || w->prev.st_mode != w->attr.st_mode
1898 || w->prev.st_nlink != w->attr.st_nlink
1899 || w->prev.st_uid != w->attr.st_uid
1900 || w->prev.st_gid != w->attr.st_gid
1901 || w->prev.st_rdev != w->attr.st_rdev
1902 || w->prev.st_size != w->attr.st_size
1903 || w->prev.st_atime != w->attr.st_atime
1904 || w->prev.st_mtime != w->attr.st_mtime
1905 || w->prev.st_ctime != w->attr.st_ctime
1906 ) {
1907 #if EV_USE_INOTIFY
1908 infy_del (EV_A_ w);
1909 infy_add (EV_A_ w);
1910 ev_stat_stat (EV_A_ w); /* avoid race... */
1911 #endif
1912
1913 ev_feed_event (EV_A_ w, EV_STAT);
1914 }
1915}
1916
1917void
1918ev_stat_start (EV_P_ ev_stat *w)
1919{
1920 if (expect_false (ev_is_active (w)))
1921 return;
1922
1923 /* since we use memcmp, we need to clear any padding data etc. */
1924 memset (&w->prev, 0, sizeof (ev_statdata));
1925 memset (&w->attr, 0, sizeof (ev_statdata));
1926
1927 ev_stat_stat (EV_A_ w);
1928
1929 if (w->interval < MIN_STAT_INTERVAL)
1930 w->interval = w->interval ? MIN_STAT_INTERVAL : DEF_STAT_INTERVAL;
1931
1932 ev_timer_init (&w->timer, stat_timer_cb, w->interval, w->interval);
1933 ev_set_priority (&w->timer, ev_priority (w));
1934
1935#if EV_USE_INOTIFY
1936 infy_init (EV_A);
1937
1938 if (fs_fd >= 0)
1939 infy_add (EV_A_ w);
1940 else
1941#endif
1942 ev_timer_start (EV_A_ &w->timer);
1943
1944 ev_start (EV_A_ (W)w, 1);
1945}
1946
1947void
1948ev_stat_stop (EV_P_ ev_stat *w)
1949{
1950 ev_clear_pending (EV_A_ (W)w);
1951 if (expect_false (!ev_is_active (w)))
1952 return;
1953
1954#if EV_USE_INOTIFY
1955 infy_del (EV_A_ w);
1956#endif
1957 ev_timer_stop (EV_A_ &w->timer);
1958
1959 ev_stop (EV_A_ (W)w);
1960}
1961#endif
1962
1963void
1964ev_idle_start (EV_P_ ev_idle *w)
1965{
1966 if (expect_false (ev_is_active (w)))
1967 return;
1968
1969 ev_start (EV_A_ (W)w, ++idlecnt);
1970 array_needsize (ev_idle *, idles, idlemax, idlecnt, EMPTY2);
1971 idles [idlecnt - 1] = w;
1972}
1973
1974void
1975ev_idle_stop (EV_P_ ev_idle *w)
1976{
1977 ev_clear_pending (EV_A_ (W)w);
1978 if (expect_false (!ev_is_active (w)))
1979 return;
1980
1981 {
1982 int active = ((W)w)->active;
1983 idles [active - 1] = idles [--idlecnt];
1984 ((W)idles [active - 1])->active = active;
1985 }
1986
1987 ev_stop (EV_A_ (W)w);
1988}
1989
1990void
1991ev_prepare_start (EV_P_ ev_prepare *w)
1992{
1993 if (expect_false (ev_is_active (w)))
1994 return;
1995
1996 ev_start (EV_A_ (W)w, ++preparecnt);
1997 array_needsize (ev_prepare *, prepares, preparemax, preparecnt, EMPTY2);
1998 prepares [preparecnt - 1] = w;
1999}
2000
2001void
2002ev_prepare_stop (EV_P_ ev_prepare *w)
2003{
2004 ev_clear_pending (EV_A_ (W)w);
2005 if (expect_false (!ev_is_active (w)))
2006 return;
2007
2008 {
2009 int active = ((W)w)->active;
2010 prepares [active - 1] = prepares [--preparecnt];
2011 ((W)prepares [active - 1])->active = active;
2012 }
2013
2014 ev_stop (EV_A_ (W)w);
2015}
2016
2017void
2018ev_check_start (EV_P_ ev_check *w)
2019{
2020 if (expect_false (ev_is_active (w)))
2021 return;
2022
2023 ev_start (EV_A_ (W)w, ++checkcnt);
2024 array_needsize (ev_check *, checks, checkmax, checkcnt, EMPTY2);
2025 checks [checkcnt - 1] = w;
2026}
2027
2028void
2029ev_check_stop (EV_P_ ev_check *w)
2030{
2031 ev_clear_pending (EV_A_ (W)w);
2032 if (expect_false (!ev_is_active (w)))
2033 return;
2034
2035 {
2036 int active = ((W)w)->active;
2037 checks [active - 1] = checks [--checkcnt];
2038 ((W)checks [active - 1])->active = active;
2039 }
2040
2041 ev_stop (EV_A_ (W)w);
2042}
2043
2044#if EV_EMBED_ENABLE
2045void noinline
1702ev_embed_sweep (EV_P_ ev_embed *w) 2046ev_embed_sweep (EV_P_ ev_embed *w)
1703{ 2047{
1704 ev_loop (w->loop, EVLOOP_NONBLOCK); 2048 ev_loop (w->loop, EVLOOP_NONBLOCK);
1705} 2049}
1706 2050
… …
1727 ev_io_init (&w->io, embed_cb, backend_fd, EV_READ); 2071 ev_io_init (&w->io, embed_cb, backend_fd, EV_READ);
1728 } 2072 }
1729 2073
1730 ev_set_priority (&w->io, ev_priority (w)); 2074 ev_set_priority (&w->io, ev_priority (w));
1731 ev_io_start (EV_A_ &w->io); 2075 ev_io_start (EV_A_ &w->io);
2076
1732 ev_start (EV_A_ (W)w, 1); 2077 ev_start (EV_A_ (W)w, 1);
1733} 2078}
1734 2079
1735void 2080void
1736ev_embed_stop (EV_P_ ev_embed *w) 2081ev_embed_stop (EV_P_ ev_embed *w)
… …
1738 ev_clear_pending (EV_A_ (W)w); 2083 ev_clear_pending (EV_A_ (W)w);
1739 if (expect_false (!ev_is_active (w))) 2084 if (expect_false (!ev_is_active (w)))
1740 return; 2085 return;
1741 2086
1742 ev_io_stop (EV_A_ &w->io); 2087 ev_io_stop (EV_A_ &w->io);
2088
2089 ev_stop (EV_A_ (W)w);
2090}
2091#endif
2092
2093#if EV_FORK_ENABLE
2094void
2095ev_fork_start (EV_P_ ev_fork *w)
2096{
2097 if (expect_false (ev_is_active (w)))
2098 return;
2099
2100 ev_start (EV_A_ (W)w, ++forkcnt);
2101 array_needsize (ev_fork *, forks, forkmax, forkcnt, EMPTY2);
2102 forks [forkcnt - 1] = w;
2103}
2104
2105void
2106ev_fork_stop (EV_P_ ev_fork *w)
2107{
2108 ev_clear_pending (EV_A_ (W)w);
2109 if (expect_false (!ev_is_active (w)))
2110 return;
2111
2112 {
2113 int active = ((W)w)->active;
2114 forks [active - 1] = forks [--forkcnt];
2115 ((W)forks [active - 1])->active = active;
2116 }
2117
1743 ev_stop (EV_A_ (W)w); 2118 ev_stop (EV_A_ (W)w);
1744} 2119}
1745#endif 2120#endif
1746 2121
1747/*****************************************************************************/ 2122/*****************************************************************************/

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