ViewVC Help
View File | Revision Log | Show Annotations | Download File
/cvs/libev/ev.c
(Generate patch)

Comparing libev/ev.c (file contents):
Revision 1.133 by root, Fri Nov 23 11:32:22 2007 UTC vs.
Revision 1.161 by root, Sat Dec 1 23:43:45 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
202#define ABSPRI(w) ((w)->priority - EV_MINPRI) 246#define ABSPRI(w) ((w)->priority - EV_MINPRI)
203 247
204#define EMPTY0 /* required for microsofts broken pseudo-c compiler */ 248#define EMPTY0 /* required for microsofts broken pseudo-c compiler */
205#define EMPTY2(a,b) /* used to suppress some warnings */ 249#define EMPTY2(a,b) /* used to suppress some warnings */
206 250
207typedef struct ev_watcher *W; 251typedef ev_watcher *W;
208typedef struct ev_watcher_list *WL; 252typedef ev_watcher_list *WL;
209typedef struct ev_watcher_time *WT; 253typedef ev_watcher_time *WT;
210 254
211static int have_monotonic; /* did clock_gettime (CLOCK_MONOTONIC) work? */ 255static int have_monotonic; /* did clock_gettime (CLOCK_MONOTONIC) work? */
212 256
213#ifdef _WIN32 257#ifdef _WIN32
214# include "ev_win32.c" 258# include "ev_win32.c"
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 struct ev_io *w; 476 ev_io *w;
422 477
423 for (w = (struct ev_io *)anfd->head; w; w = (struct ev_io *)((WL)w)->next) 478 for (w = (ev_io *)anfd->head; w; w = (ev_io *)((WL)w)->next)
424 { 479 {
425 int ev = w->events & revents; 480 int ev = w->events & revents;
426 481
427 if (ev) 482 if (ev)
428 ev_feed_event (EV_A_ (W)w, ev); 483 ev_feed_event (EV_A_ (W)w, ev);
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)
446 { 499 {
447 int fd = fdchanges [i]; 500 int fd = fdchanges [i];
448 ANFD *anfd = anfds + fd; 501 ANFD *anfd = anfds + fd;
449 struct ev_io *w; 502 ev_io *w;
450 503
451 int events = 0; 504 int events = 0;
452 505
453 for (w = (struct ev_io *)anfd->head; w; w = (struct ev_io *)((WL)w)->next) 506 for (w = (ev_io *)anfd->head; w; w = (ev_io *)((WL)w)->next)
454 events |= w->events; 507 events |= w->events;
455 508
456#if EV_SELECT_IS_WINSOCKET 509#if EV_SELECT_IS_WINSOCKET
457 if (events) 510 if (events)
458 { 511 {
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 struct ev_io *w; 543 ev_io *w;
491 544
492 while ((w = (struct ev_io *)anfds [fd].head)) 545 while ((w = (ev_io *)anfds [fd].head))
493 { 546 {
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}
608static ANSIG *signals; 660static ANSIG *signals;
609static int signalmax; 661static int signalmax;
610 662
611static int sigpipe [2]; 663static int sigpipe [2];
612static sig_atomic_t volatile gotsig; 664static sig_atomic_t volatile gotsig;
613static struct 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
661 for (w = signals [signum].head; w; w = w->next) 713 for (w = signals [signum].head; w; w = w->next)
662 ev_feed_event (EV_A_ (W)w, EV_SIGNAL); 714 ev_feed_event (EV_A_ (W)w, EV_SIGNAL);
663} 715}
664 716
665static void 717static void
666sigcb (EV_P_ struct ev_io *iow, int revents) 718sigcb (EV_P_ ev_io *iow, int revents)
667{ 719{
668 int signum; 720 int signum;
669 721
670 read (sigpipe [0], &revents, 1); 722 read (sigpipe [0], &revents, 1);
671 gotsig = 0; 723 gotsig = 0;
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 struct ev_child *childs [PID_HASHSIZE]; 755static ev_child *childs [EV_PID_HASHSIZE];
704 756
705#ifndef _WIN32 757#ifndef _WIN32
706 758
707static struct 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_ struct 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 struct ev_child *w; 764 ev_child *w;
717 765
718 for (w = (struct ev_child *)childs [chain & (PID_HASHSIZE - 1)]; w; w = (struct 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_ struct 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
816 873
817 return flags; 874 return flags;
818} 875}
819 876
820unsigned int 877unsigned int
878ev_embeddable_backends (void)
879{
880 return EVBACKEND_EPOLL
881 | EVBACKEND_KQUEUE
882 | EVBACKEND_PORT;
883}
884
885unsigned int
821ev_backend (EV_P) 886ev_backend (EV_P)
822{ 887{
823 return backend; 888 return backend;
824} 889}
825 890
826static void 891static void noinline
827loop_init (EV_P_ unsigned int flags) 892loop_init (EV_P_ unsigned int flags)
828{ 893{
829 if (!backend) 894 if (!backend)
830 { 895 {
831#if EV_USE_MONOTONIC 896#if EV_USE_MONOTONIC
839 ev_rt_now = ev_time (); 904 ev_rt_now = ev_time ();
840 mn_now = get_clock (); 905 mn_now = get_clock ();
841 now_floor = mn_now; 906 now_floor = mn_now;
842 rtmn_diff = ev_rt_now - mn_now; 907 rtmn_diff = ev_rt_now - mn_now;
843 908
909 /* pid check not overridable via env */
910#ifndef _WIN32
911 if (flags & EVFLAG_FORKCHECK)
912 curpid = getpid ();
913#endif
914
844 if (!(flags & EVFLAG_NOENV) 915 if (!(flags & EVFLAG_NOENV)
845 && !enable_secure () 916 && !enable_secure ()
846 && getenv ("LIBEV_FLAGS")) 917 && getenv ("LIBEV_FLAGS"))
847 flags = atoi (getenv ("LIBEV_FLAGS")); 918 flags = atoi (getenv ("LIBEV_FLAGS"));
848 919
849 if (!(flags & 0x0000ffffUL)) 920 if (!(flags & 0x0000ffffUL))
850 flags |= ev_recommended_backends (); 921 flags |= ev_recommended_backends ();
851 922
852 backend = 0; 923 backend = 0;
924 backend_fd = -1;
925#if EV_USE_INOTIFY
926 fs_fd = -2;
927#endif
928
853#if EV_USE_PORT 929#if EV_USE_PORT
854 if (!backend && (flags & EVBACKEND_PORT )) backend = port_init (EV_A_ flags); 930 if (!backend && (flags & EVBACKEND_PORT )) backend = port_init (EV_A_ flags);
855#endif 931#endif
856#if EV_USE_KQUEUE 932#if EV_USE_KQUEUE
857 if (!backend && (flags & EVBACKEND_KQUEUE)) backend = kqueue_init (EV_A_ flags); 933 if (!backend && (flags & EVBACKEND_KQUEUE)) backend = kqueue_init (EV_A_ flags);
869 ev_init (&sigev, sigcb); 945 ev_init (&sigev, sigcb);
870 ev_set_priority (&sigev, EV_MAXPRI); 946 ev_set_priority (&sigev, EV_MAXPRI);
871 } 947 }
872} 948}
873 949
874static void 950static void noinline
875loop_destroy (EV_P) 951loop_destroy (EV_P)
876{ 952{
877 int i; 953 int i;
954
955#if EV_USE_INOTIFY
956 if (fs_fd >= 0)
957 close (fs_fd);
958#endif
959
960 if (backend_fd >= 0)
961 close (backend_fd);
878 962
879#if EV_USE_PORT 963#if EV_USE_PORT
880 if (backend == EVBACKEND_PORT ) port_destroy (EV_A); 964 if (backend == EVBACKEND_PORT ) port_destroy (EV_A);
881#endif 965#endif
882#if EV_USE_KQUEUE 966#if EV_USE_KQUEUE
896 array_free (pending, [i]); 980 array_free (pending, [i]);
897 981
898 /* have to use the microsoft-never-gets-it-right macro */ 982 /* have to use the microsoft-never-gets-it-right macro */
899 array_free (fdchange, EMPTY0); 983 array_free (fdchange, EMPTY0);
900 array_free (timer, EMPTY0); 984 array_free (timer, EMPTY0);
901#if EV_PERIODICS 985#if EV_PERIODIC_ENABLE
902 array_free (periodic, EMPTY0); 986 array_free (periodic, EMPTY0);
903#endif 987#endif
904 array_free (idle, EMPTY0); 988 array_free (idle, EMPTY0);
905 array_free (prepare, EMPTY0); 989 array_free (prepare, EMPTY0);
906 array_free (check, EMPTY0); 990 array_free (check, EMPTY0);
907 991
908 backend = 0; 992 backend = 0;
909} 993}
910 994
911static void 995void inline_size infy_fork (EV_P);
996
997void inline_size
912loop_fork (EV_P) 998loop_fork (EV_P)
913{ 999{
914#if EV_USE_PORT 1000#if EV_USE_PORT
915 if (backend == EVBACKEND_PORT ) port_fork (EV_A); 1001 if (backend == EVBACKEND_PORT ) port_fork (EV_A);
916#endif 1002#endif
917#if EV_USE_KQUEUE 1003#if EV_USE_KQUEUE
918 if (backend == EVBACKEND_KQUEUE) kqueue_fork (EV_A); 1004 if (backend == EVBACKEND_KQUEUE) kqueue_fork (EV_A);
919#endif 1005#endif
920#if EV_USE_EPOLL 1006#if EV_USE_EPOLL
921 if (backend == EVBACKEND_EPOLL ) epoll_fork (EV_A); 1007 if (backend == EVBACKEND_EPOLL ) epoll_fork (EV_A);
1008#endif
1009#if EV_USE_INOTIFY
1010 infy_fork (EV_A);
922#endif 1011#endif
923 1012
924 if (ev_is_active (&sigev)) 1013 if (ev_is_active (&sigev))
925 { 1014 {
926 /* default loop */ 1015 /* default loop */
1042 postfork = 1; 1131 postfork = 1;
1043} 1132}
1044 1133
1045/*****************************************************************************/ 1134/*****************************************************************************/
1046 1135
1047static int 1136int inline_size
1048any_pending (EV_P) 1137any_pending (EV_P)
1049{ 1138{
1050 int pri; 1139 int pri;
1051 1140
1052 for (pri = NUMPRI; pri--; ) 1141 for (pri = NUMPRI; pri--; )
1054 return 1; 1143 return 1;
1055 1144
1056 return 0; 1145 return 0;
1057} 1146}
1058 1147
1059inline void 1148void inline_speed
1060call_pending (EV_P) 1149call_pending (EV_P)
1061{ 1150{
1062 int pri; 1151 int pri;
1063 1152
1064 for (pri = NUMPRI; pri--; ) 1153 for (pri = NUMPRI; pri--; )
1066 { 1155 {
1067 ANPENDING *p = pendings [pri] + --pendingcnt [pri]; 1156 ANPENDING *p = pendings [pri] + --pendingcnt [pri];
1068 1157
1069 if (expect_true (p->w)) 1158 if (expect_true (p->w))
1070 { 1159 {
1160 /*assert (("non-pending watcher on pending list", p->w->pending));*/
1161
1071 p->w->pending = 0; 1162 p->w->pending = 0;
1072 EV_CB_INVOKE (p->w, p->events); 1163 EV_CB_INVOKE (p->w, p->events);
1073 } 1164 }
1074 } 1165 }
1075} 1166}
1076 1167
1077inline void 1168void inline_size
1078timers_reify (EV_P) 1169timers_reify (EV_P)
1079{ 1170{
1080 while (timercnt && ((WT)timers [0])->at <= mn_now) 1171 while (timercnt && ((WT)timers [0])->at <= mn_now)
1081 { 1172 {
1082 struct ev_timer *w = timers [0]; 1173 ev_timer *w = timers [0];
1083 1174
1084 assert (("inactive timer on timer heap detected", ev_is_active (w))); 1175 /*assert (("inactive timer on timer heap detected", ev_is_active (w)));*/
1085 1176
1086 /* first reschedule or stop timer */ 1177 /* first reschedule or stop timer */
1087 if (w->repeat) 1178 if (w->repeat)
1088 { 1179 {
1089 assert (("negative ev_timer repeat value found while processing timers", w->repeat > 0.)); 1180 assert (("negative ev_timer repeat value found while processing timers", w->repeat > 0.));
1099 1190
1100 ev_feed_event (EV_A_ (W)w, EV_TIMEOUT); 1191 ev_feed_event (EV_A_ (W)w, EV_TIMEOUT);
1101 } 1192 }
1102} 1193}
1103 1194
1104#if EV_PERIODICS 1195#if EV_PERIODIC_ENABLE
1105inline void 1196void inline_size
1106periodics_reify (EV_P) 1197periodics_reify (EV_P)
1107{ 1198{
1108 while (periodiccnt && ((WT)periodics [0])->at <= ev_rt_now) 1199 while (periodiccnt && ((WT)periodics [0])->at <= ev_rt_now)
1109 { 1200 {
1110 struct ev_periodic *w = periodics [0]; 1201 ev_periodic *w = periodics [0];
1111 1202
1112 assert (("inactive timer on periodic heap detected", ev_is_active (w))); 1203 /*assert (("inactive timer on periodic heap detected", ev_is_active (w)));*/
1113 1204
1114 /* first reschedule or stop timer */ 1205 /* first reschedule or stop timer */
1115 if (w->reschedule_cb) 1206 if (w->reschedule_cb)
1116 { 1207 {
1117 ((WT)w)->at = w->reschedule_cb (w, ev_rt_now + 0.0001); 1208 ((WT)w)->at = w->reschedule_cb (w, ev_rt_now + 0.0001);
1129 1220
1130 ev_feed_event (EV_A_ (W)w, EV_PERIODIC); 1221 ev_feed_event (EV_A_ (W)w, EV_PERIODIC);
1131 } 1222 }
1132} 1223}
1133 1224
1134static void 1225static void noinline
1135periodics_reschedule (EV_P) 1226periodics_reschedule (EV_P)
1136{ 1227{
1137 int i; 1228 int i;
1138 1229
1139 /* adjust periodics after time jump */ 1230 /* adjust periodics after time jump */
1140 for (i = 0; i < periodiccnt; ++i) 1231 for (i = 0; i < periodiccnt; ++i)
1141 { 1232 {
1142 struct ev_periodic *w = periodics [i]; 1233 ev_periodic *w = periodics [i];
1143 1234
1144 if (w->reschedule_cb) 1235 if (w->reschedule_cb)
1145 ((WT)w)->at = w->reschedule_cb (w, ev_rt_now); 1236 ((WT)w)->at = w->reschedule_cb (w, ev_rt_now);
1146 else if (w->interval) 1237 else if (w->interval)
1147 ((WT)w)->at += ceil ((ev_rt_now - ((WT)w)->at) / w->interval) * w->interval; 1238 ((WT)w)->at += ceil ((ev_rt_now - ((WT)w)->at) / w->interval) * w->interval;
1151 for (i = periodiccnt >> 1; i--; ) 1242 for (i = periodiccnt >> 1; i--; )
1152 downheap ((WT *)periodics, periodiccnt, i); 1243 downheap ((WT *)periodics, periodiccnt, i);
1153} 1244}
1154#endif 1245#endif
1155 1246
1156inline int 1247int inline_size
1157time_update_monotonic (EV_P) 1248time_update_monotonic (EV_P)
1158{ 1249{
1159 mn_now = get_clock (); 1250 mn_now = get_clock ();
1160 1251
1161 if (expect_true (mn_now - now_floor < MIN_TIMEJUMP * .5)) 1252 if (expect_true (mn_now - now_floor < MIN_TIMEJUMP * .5))
1169 ev_rt_now = ev_time (); 1260 ev_rt_now = ev_time ();
1170 return 1; 1261 return 1;
1171 } 1262 }
1172} 1263}
1173 1264
1174inline void 1265void inline_size
1175time_update (EV_P) 1266time_update (EV_P)
1176{ 1267{
1177 int i; 1268 int i;
1178 1269
1179#if EV_USE_MONOTONIC 1270#if EV_USE_MONOTONIC
1181 { 1272 {
1182 if (time_update_monotonic (EV_A)) 1273 if (time_update_monotonic (EV_A))
1183 { 1274 {
1184 ev_tstamp odiff = rtmn_diff; 1275 ev_tstamp odiff = rtmn_diff;
1185 1276
1186 for (i = 4; --i; ) /* loop a few times, before making important decisions */ 1277 /* loop a few times, before making important decisions.
1278 * on the choice of "4": one iteration isn't enough,
1279 * in case we get preempted during the calls to
1280 * ev_time and get_clock. a second call is almost guaranteed
1281 * to succeed in that case, though. and looping a few more times
1282 * doesn't hurt either as we only do this on time-jumps or
1283 * in the unlikely event of having been preempted here.
1284 */
1285 for (i = 4; --i; )
1187 { 1286 {
1188 rtmn_diff = ev_rt_now - mn_now; 1287 rtmn_diff = ev_rt_now - mn_now;
1189 1288
1190 if (fabs (odiff - rtmn_diff) < MIN_TIMEJUMP) 1289 if (fabs (odiff - rtmn_diff) < MIN_TIMEJUMP)
1191 return; /* all is well */ 1290 return; /* all is well */
1193 ev_rt_now = ev_time (); 1292 ev_rt_now = ev_time ();
1194 mn_now = get_clock (); 1293 mn_now = get_clock ();
1195 now_floor = mn_now; 1294 now_floor = mn_now;
1196 } 1295 }
1197 1296
1198# if EV_PERIODICS 1297# if EV_PERIODIC_ENABLE
1199 periodics_reschedule (EV_A); 1298 periodics_reschedule (EV_A);
1200# endif 1299# endif
1201 /* no timer adjustment, as the monotonic clock doesn't jump */ 1300 /* no timer adjustment, as the monotonic clock doesn't jump */
1202 /* timers_reschedule (EV_A_ rtmn_diff - odiff) */ 1301 /* timers_reschedule (EV_A_ rtmn_diff - odiff) */
1203 } 1302 }
1207 { 1306 {
1208 ev_rt_now = ev_time (); 1307 ev_rt_now = ev_time ();
1209 1308
1210 if (expect_false (mn_now > ev_rt_now || mn_now < ev_rt_now - MAX_BLOCKTIME - MIN_TIMEJUMP)) 1309 if (expect_false (mn_now > ev_rt_now || mn_now < ev_rt_now - MAX_BLOCKTIME - MIN_TIMEJUMP))
1211 { 1310 {
1212#if EV_PERIODICS 1311#if EV_PERIODIC_ENABLE
1213 periodics_reschedule (EV_A); 1312 periodics_reschedule (EV_A);
1214#endif 1313#endif
1215 1314
1216 /* adjust timers. this is easy, as the offset is the same for all */ 1315 /* adjust timers. this is easy, as the offset is the same for all of them */
1217 for (i = 0; i < timercnt; ++i) 1316 for (i = 0; i < timercnt; ++i)
1218 ((WT)timers [i])->at += ev_rt_now - mn_now; 1317 ((WT)timers [i])->at += ev_rt_now - mn_now;
1219 } 1318 }
1220 1319
1221 mn_now = ev_rt_now; 1320 mn_now = ev_rt_now;
1237static int loop_done; 1336static int loop_done;
1238 1337
1239void 1338void
1240ev_loop (EV_P_ int flags) 1339ev_loop (EV_P_ int flags)
1241{ 1340{
1242 double block;
1243 loop_done = flags & (EVLOOP_ONESHOT | EVLOOP_NONBLOCK) ? 1 : 0; 1341 loop_done = flags & (EVLOOP_ONESHOT | EVLOOP_NONBLOCK)
1342 ? EVUNLOOP_ONE
1343 : EVUNLOOP_CANCEL;
1244 1344
1245 while (activecnt) 1345 call_pending (EV_A); /* in case we recurse, ensure ordering stays nice and clean */
1346
1347 do
1246 { 1348 {
1349#ifndef _WIN32
1350 if (expect_false (curpid)) /* penalise the forking check even more */
1351 if (expect_false (getpid () != curpid))
1352 {
1353 curpid = getpid ();
1354 postfork = 1;
1355 }
1356#endif
1357
1358#if EV_FORK_ENABLE
1359 /* we might have forked, so queue fork handlers */
1360 if (expect_false (postfork))
1361 if (forkcnt)
1362 {
1363 queue_events (EV_A_ (W *)forks, forkcnt, EV_FORK);
1364 call_pending (EV_A);
1365 }
1366#endif
1367
1247 /* queue check watchers (and execute them) */ 1368 /* queue check watchers (and execute them) */
1248 if (expect_false (preparecnt)) 1369 if (expect_false (preparecnt))
1249 { 1370 {
1250 queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE); 1371 queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE);
1251 call_pending (EV_A); 1372 call_pending (EV_A);
1252 } 1373 }
1253 1374
1375 if (expect_false (!activecnt))
1376 break;
1377
1254 /* we might have forked, so reify kernel state if necessary */ 1378 /* we might have forked, so reify kernel state if necessary */
1255 if (expect_false (postfork)) 1379 if (expect_false (postfork))
1256 loop_fork (EV_A); 1380 loop_fork (EV_A);
1257 1381
1258 /* update fd-related kernel structures */ 1382 /* update fd-related kernel structures */
1259 fd_reify (EV_A); 1383 fd_reify (EV_A);
1260 1384
1261 /* calculate blocking time */ 1385 /* calculate blocking time */
1386 {
1387 ev_tstamp block;
1262 1388
1263 /* we only need this for !monotonic clock or timers, but as we basically 1389 if (expect_false (flags & EVLOOP_NONBLOCK || idlecnt || !activecnt))
1264 always have timers, we just calculate it always */ 1390 block = 0.; /* do not block at all */
1391 else
1392 {
1393 /* update time to cancel out callback processing overhead */
1265#if EV_USE_MONOTONIC 1394#if EV_USE_MONOTONIC
1266 if (expect_true (have_monotonic)) 1395 if (expect_true (have_monotonic))
1267 time_update_monotonic (EV_A); 1396 time_update_monotonic (EV_A);
1268 else 1397 else
1269#endif 1398#endif
1270 { 1399 {
1271 ev_rt_now = ev_time (); 1400 ev_rt_now = ev_time ();
1272 mn_now = ev_rt_now; 1401 mn_now = ev_rt_now;
1273 } 1402 }
1274 1403
1275 if (flags & EVLOOP_NONBLOCK || idlecnt)
1276 block = 0.;
1277 else
1278 {
1279 block = MAX_BLOCKTIME; 1404 block = MAX_BLOCKTIME;
1280 1405
1281 if (timercnt) 1406 if (timercnt)
1282 { 1407 {
1283 ev_tstamp to = ((WT)timers [0])->at - mn_now + backend_fudge; 1408 ev_tstamp to = ((WT)timers [0])->at - mn_now + backend_fudge;
1284 if (block > to) block = to; 1409 if (block > to) block = to;
1285 } 1410 }
1286 1411
1287#if EV_PERIODICS 1412#if EV_PERIODIC_ENABLE
1288 if (periodiccnt) 1413 if (periodiccnt)
1289 { 1414 {
1290 ev_tstamp to = ((WT)periodics [0])->at - ev_rt_now + backend_fudge; 1415 ev_tstamp to = ((WT)periodics [0])->at - ev_rt_now + backend_fudge;
1291 if (block > to) block = to; 1416 if (block > to) block = to;
1292 } 1417 }
1293#endif 1418#endif
1294 1419
1295 if (expect_false (block < 0.)) block = 0.; 1420 if (expect_false (block < 0.)) block = 0.;
1296 } 1421 }
1297 1422
1298 backend_poll (EV_A_ block); 1423 backend_poll (EV_A_ block);
1424 }
1299 1425
1300 /* update ev_rt_now, do magic */ 1426 /* update ev_rt_now, do magic */
1301 time_update (EV_A); 1427 time_update (EV_A);
1302 1428
1303 /* queue pending timers and reschedule them */ 1429 /* queue pending timers and reschedule them */
1304 timers_reify (EV_A); /* relative timers called last */ 1430 timers_reify (EV_A); /* relative timers called last */
1305#if EV_PERIODICS 1431#if EV_PERIODIC_ENABLE
1306 periodics_reify (EV_A); /* absolute timers called first */ 1432 periodics_reify (EV_A); /* absolute timers called first */
1307#endif 1433#endif
1308 1434
1309 /* queue idle watchers unless io or timers are pending */ 1435 /* queue idle watchers unless other events are pending */
1310 if (idlecnt && !any_pending (EV_A)) 1436 if (idlecnt && !any_pending (EV_A))
1311 queue_events (EV_A_ (W *)idles, idlecnt, EV_IDLE); 1437 queue_events (EV_A_ (W *)idles, idlecnt, EV_IDLE);
1312 1438
1313 /* queue check watchers, to be executed first */ 1439 /* queue check watchers, to be executed first */
1314 if (expect_false (checkcnt)) 1440 if (expect_false (checkcnt))
1315 queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK); 1441 queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK);
1316 1442
1317 call_pending (EV_A); 1443 call_pending (EV_A);
1318 1444
1319 if (expect_false (loop_done))
1320 break;
1321 } 1445 }
1446 while (expect_true (activecnt && !loop_done));
1322 1447
1323 if (loop_done != 2) 1448 if (loop_done == EVUNLOOP_ONE)
1324 loop_done = 0; 1449 loop_done = EVUNLOOP_CANCEL;
1325} 1450}
1326 1451
1327void 1452void
1328ev_unloop (EV_P_ int how) 1453ev_unloop (EV_P_ int how)
1329{ 1454{
1330 loop_done = how; 1455 loop_done = how;
1331} 1456}
1332 1457
1333/*****************************************************************************/ 1458/*****************************************************************************/
1334 1459
1335inline void 1460void inline_size
1336wlist_add (WL *head, WL elem) 1461wlist_add (WL *head, WL elem)
1337{ 1462{
1338 elem->next = *head; 1463 elem->next = *head;
1339 *head = elem; 1464 *head = elem;
1340} 1465}
1341 1466
1342inline void 1467void inline_size
1343wlist_del (WL *head, WL elem) 1468wlist_del (WL *head, WL elem)
1344{ 1469{
1345 while (*head) 1470 while (*head)
1346 { 1471 {
1347 if (*head == elem) 1472 if (*head == elem)
1352 1477
1353 head = &(*head)->next; 1478 head = &(*head)->next;
1354 } 1479 }
1355} 1480}
1356 1481
1357inline void 1482void inline_speed
1358ev_clear_pending (EV_P_ W w) 1483ev_clear_pending (EV_P_ W w)
1359{ 1484{
1360 if (w->pending) 1485 if (w->pending)
1361 { 1486 {
1362 pendings [ABSPRI (w)][w->pending - 1].w = 0; 1487 pendings [ABSPRI (w)][w->pending - 1].w = 0;
1363 w->pending = 0; 1488 w->pending = 0;
1364 } 1489 }
1365} 1490}
1366 1491
1367inline void 1492void inline_speed
1368ev_start (EV_P_ W w, int active) 1493ev_start (EV_P_ W w, int active)
1369{ 1494{
1370 if (w->priority < EV_MINPRI) w->priority = EV_MINPRI; 1495 if (w->priority < EV_MINPRI) w->priority = EV_MINPRI;
1371 if (w->priority > EV_MAXPRI) w->priority = EV_MAXPRI; 1496 if (w->priority > EV_MAXPRI) w->priority = EV_MAXPRI;
1372 1497
1373 w->active = active; 1498 w->active = active;
1374 ev_ref (EV_A); 1499 ev_ref (EV_A);
1375} 1500}
1376 1501
1377inline void 1502void inline_size
1378ev_stop (EV_P_ W w) 1503ev_stop (EV_P_ W w)
1379{ 1504{
1380 ev_unref (EV_A); 1505 ev_unref (EV_A);
1381 w->active = 0; 1506 w->active = 0;
1382} 1507}
1383 1508
1384/*****************************************************************************/ 1509/*****************************************************************************/
1385 1510
1386void 1511void
1387ev_io_start (EV_P_ struct ev_io *w) 1512ev_io_start (EV_P_ ev_io *w)
1388{ 1513{
1389 int fd = w->fd; 1514 int fd = w->fd;
1390 1515
1391 if (expect_false (ev_is_active (w))) 1516 if (expect_false (ev_is_active (w)))
1392 return; 1517 return;
1399 1524
1400 fd_change (EV_A_ fd); 1525 fd_change (EV_A_ fd);
1401} 1526}
1402 1527
1403void 1528void
1404ev_io_stop (EV_P_ struct ev_io *w) 1529ev_io_stop (EV_P_ ev_io *w)
1405{ 1530{
1406 ev_clear_pending (EV_A_ (W)w); 1531 ev_clear_pending (EV_A_ (W)w);
1407 if (expect_false (!ev_is_active (w))) 1532 if (expect_false (!ev_is_active (w)))
1408 return; 1533 return;
1409 1534
1414 1539
1415 fd_change (EV_A_ w->fd); 1540 fd_change (EV_A_ w->fd);
1416} 1541}
1417 1542
1418void 1543void
1419ev_timer_start (EV_P_ struct ev_timer *w) 1544ev_timer_start (EV_P_ ev_timer *w)
1420{ 1545{
1421 if (expect_false (ev_is_active (w))) 1546 if (expect_false (ev_is_active (w)))
1422 return; 1547 return;
1423 1548
1424 ((WT)w)->at += mn_now; 1549 ((WT)w)->at += mn_now;
1425 1550
1426 assert (("ev_timer_start called with negative timer repeat value", w->repeat >= 0.)); 1551 assert (("ev_timer_start called with negative timer repeat value", w->repeat >= 0.));
1427 1552
1428 ev_start (EV_A_ (W)w, ++timercnt); 1553 ev_start (EV_A_ (W)w, ++timercnt);
1429 array_needsize (struct ev_timer *, timers, timermax, timercnt, EMPTY2); 1554 array_needsize (ev_timer *, timers, timermax, timercnt, EMPTY2);
1430 timers [timercnt - 1] = w; 1555 timers [timercnt - 1] = w;
1431 upheap ((WT *)timers, timercnt - 1); 1556 upheap ((WT *)timers, timercnt - 1);
1432 1557
1433 assert (("internal timer heap corruption", timers [((W)w)->active - 1] == w)); 1558 /*assert (("internal timer heap corruption", timers [((W)w)->active - 1] == w));*/
1434} 1559}
1435 1560
1436void 1561void
1437ev_timer_stop (EV_P_ struct ev_timer *w) 1562ev_timer_stop (EV_P_ ev_timer *w)
1438{ 1563{
1439 ev_clear_pending (EV_A_ (W)w); 1564 ev_clear_pending (EV_A_ (W)w);
1440 if (expect_false (!ev_is_active (w))) 1565 if (expect_false (!ev_is_active (w)))
1441 return; 1566 return;
1442 1567
1443 assert (("internal timer heap corruption", timers [((W)w)->active - 1] == w)); 1568 assert (("internal timer heap corruption", timers [((W)w)->active - 1] == w));
1444 1569
1570 {
1571 int active = ((W)w)->active;
1572
1445 if (expect_true (((W)w)->active < timercnt--)) 1573 if (expect_true (--active < --timercnt))
1446 { 1574 {
1447 timers [((W)w)->active - 1] = timers [timercnt]; 1575 timers [active] = timers [timercnt];
1448 adjustheap ((WT *)timers, timercnt, ((W)w)->active - 1); 1576 adjustheap ((WT *)timers, timercnt, active);
1449 } 1577 }
1578 }
1450 1579
1451 ((WT)w)->at -= mn_now; 1580 ((WT)w)->at -= mn_now;
1452 1581
1453 ev_stop (EV_A_ (W)w); 1582 ev_stop (EV_A_ (W)w);
1454} 1583}
1455 1584
1456void 1585void
1457ev_timer_again (EV_P_ struct ev_timer *w) 1586ev_timer_again (EV_P_ ev_timer *w)
1458{ 1587{
1459 if (ev_is_active (w)) 1588 if (ev_is_active (w))
1460 { 1589 {
1461 if (w->repeat) 1590 if (w->repeat)
1462 { 1591 {
1471 w->at = w->repeat; 1600 w->at = w->repeat;
1472 ev_timer_start (EV_A_ w); 1601 ev_timer_start (EV_A_ w);
1473 } 1602 }
1474} 1603}
1475 1604
1476#if EV_PERIODICS 1605#if EV_PERIODIC_ENABLE
1477void 1606void
1478ev_periodic_start (EV_P_ struct ev_periodic *w) 1607ev_periodic_start (EV_P_ ev_periodic *w)
1479{ 1608{
1480 if (expect_false (ev_is_active (w))) 1609 if (expect_false (ev_is_active (w)))
1481 return; 1610 return;
1482 1611
1483 if (w->reschedule_cb) 1612 if (w->reschedule_cb)
1488 /* this formula differs from the one in periodic_reify because we do not always round up */ 1617 /* this formula differs from the one in periodic_reify because we do not always round up */
1489 ((WT)w)->at += ceil ((ev_rt_now - ((WT)w)->at) / w->interval) * w->interval; 1618 ((WT)w)->at += ceil ((ev_rt_now - ((WT)w)->at) / w->interval) * w->interval;
1490 } 1619 }
1491 1620
1492 ev_start (EV_A_ (W)w, ++periodiccnt); 1621 ev_start (EV_A_ (W)w, ++periodiccnt);
1493 array_needsize (struct ev_periodic *, periodics, periodicmax, periodiccnt, EMPTY2); 1622 array_needsize (ev_periodic *, periodics, periodicmax, periodiccnt, EMPTY2);
1494 periodics [periodiccnt - 1] = w; 1623 periodics [periodiccnt - 1] = w;
1495 upheap ((WT *)periodics, periodiccnt - 1); 1624 upheap ((WT *)periodics, periodiccnt - 1);
1496 1625
1497 assert (("internal periodic heap corruption", periodics [((W)w)->active - 1] == w)); 1626 /*assert (("internal periodic heap corruption", periodics [((W)w)->active - 1] == w));*/
1498} 1627}
1499 1628
1500void 1629void
1501ev_periodic_stop (EV_P_ struct ev_periodic *w) 1630ev_periodic_stop (EV_P_ ev_periodic *w)
1502{ 1631{
1503 ev_clear_pending (EV_A_ (W)w); 1632 ev_clear_pending (EV_A_ (W)w);
1504 if (expect_false (!ev_is_active (w))) 1633 if (expect_false (!ev_is_active (w)))
1505 return; 1634 return;
1506 1635
1507 assert (("internal periodic heap corruption", periodics [((W)w)->active - 1] == w)); 1636 assert (("internal periodic heap corruption", periodics [((W)w)->active - 1] == w));
1508 1637
1638 {
1639 int active = ((W)w)->active;
1640
1509 if (expect_true (((W)w)->active < periodiccnt--)) 1641 if (expect_true (--active < --periodiccnt))
1510 { 1642 {
1511 periodics [((W)w)->active - 1] = periodics [periodiccnt]; 1643 periodics [active] = periodics [periodiccnt];
1512 adjustheap ((WT *)periodics, periodiccnt, ((W)w)->active - 1); 1644 adjustheap ((WT *)periodics, periodiccnt, active);
1513 } 1645 }
1646 }
1514 1647
1515 ev_stop (EV_A_ (W)w); 1648 ev_stop (EV_A_ (W)w);
1516} 1649}
1517 1650
1518void 1651void
1519ev_periodic_again (EV_P_ struct ev_periodic *w) 1652ev_periodic_again (EV_P_ ev_periodic *w)
1520{ 1653{
1521 /* TODO: use adjustheap and recalculation */ 1654 /* TODO: use adjustheap and recalculation */
1522 ev_periodic_stop (EV_A_ w); 1655 ev_periodic_stop (EV_A_ w);
1523 ev_periodic_start (EV_A_ w); 1656 ev_periodic_start (EV_A_ w);
1524} 1657}
1525#endif 1658#endif
1526 1659
1527void
1528ev_idle_start (EV_P_ struct ev_idle *w)
1529{
1530 if (expect_false (ev_is_active (w)))
1531 return;
1532
1533 ev_start (EV_A_ (W)w, ++idlecnt);
1534 array_needsize (struct ev_idle *, idles, idlemax, idlecnt, EMPTY2);
1535 idles [idlecnt - 1] = w;
1536}
1537
1538void
1539ev_idle_stop (EV_P_ struct ev_idle *w)
1540{
1541 ev_clear_pending (EV_A_ (W)w);
1542 if (expect_false (!ev_is_active (w)))
1543 return;
1544
1545 idles [((W)w)->active - 1] = idles [--idlecnt];
1546 ev_stop (EV_A_ (W)w);
1547}
1548
1549void
1550ev_prepare_start (EV_P_ struct ev_prepare *w)
1551{
1552 if (expect_false (ev_is_active (w)))
1553 return;
1554
1555 ev_start (EV_A_ (W)w, ++preparecnt);
1556 array_needsize (struct ev_prepare *, prepares, preparemax, preparecnt, EMPTY2);
1557 prepares [preparecnt - 1] = w;
1558}
1559
1560void
1561ev_prepare_stop (EV_P_ struct ev_prepare *w)
1562{
1563 ev_clear_pending (EV_A_ (W)w);
1564 if (expect_false (!ev_is_active (w)))
1565 return;
1566
1567 prepares [((W)w)->active - 1] = prepares [--preparecnt];
1568 ev_stop (EV_A_ (W)w);
1569}
1570
1571void
1572ev_check_start (EV_P_ struct ev_check *w)
1573{
1574 if (expect_false (ev_is_active (w)))
1575 return;
1576
1577 ev_start (EV_A_ (W)w, ++checkcnt);
1578 array_needsize (struct ev_check *, checks, checkmax, checkcnt, EMPTY2);
1579 checks [checkcnt - 1] = w;
1580}
1581
1582void
1583ev_check_stop (EV_P_ struct ev_check *w)
1584{
1585 ev_clear_pending (EV_A_ (W)w);
1586 if (expect_false (!ev_is_active (w)))
1587 return;
1588
1589 checks [((W)w)->active - 1] = checks [--checkcnt];
1590 ev_stop (EV_A_ (W)w);
1591}
1592
1593#ifndef SA_RESTART 1660#ifndef SA_RESTART
1594# define SA_RESTART 0 1661# define SA_RESTART 0
1595#endif 1662#endif
1596 1663
1597void 1664void
1598ev_signal_start (EV_P_ struct ev_signal *w) 1665ev_signal_start (EV_P_ ev_signal *w)
1599{ 1666{
1600#if EV_MULTIPLICITY 1667#if EV_MULTIPLICITY
1601 assert (("signal watchers are only supported in the default loop", loop == ev_default_loop_ptr)); 1668 assert (("signal watchers are only supported in the default loop", loop == ev_default_loop_ptr));
1602#endif 1669#endif
1603 if (expect_false (ev_is_active (w))) 1670 if (expect_false (ev_is_active (w)))
1622#endif 1689#endif
1623 } 1690 }
1624} 1691}
1625 1692
1626void 1693void
1627ev_signal_stop (EV_P_ struct ev_signal *w) 1694ev_signal_stop (EV_P_ ev_signal *w)
1628{ 1695{
1629 ev_clear_pending (EV_A_ (W)w); 1696 ev_clear_pending (EV_A_ (W)w);
1630 if (expect_false (!ev_is_active (w))) 1697 if (expect_false (!ev_is_active (w)))
1631 return; 1698 return;
1632 1699
1636 if (!signals [w->signum - 1].head) 1703 if (!signals [w->signum - 1].head)
1637 signal (w->signum, SIG_DFL); 1704 signal (w->signum, SIG_DFL);
1638} 1705}
1639 1706
1640void 1707void
1641ev_child_start (EV_P_ struct ev_child *w) 1708ev_child_start (EV_P_ ev_child *w)
1642{ 1709{
1643#if EV_MULTIPLICITY 1710#if EV_MULTIPLICITY
1644 assert (("child watchers are only supported in the default loop", loop == ev_default_loop_ptr)); 1711 assert (("child watchers are only supported in the default loop", loop == ev_default_loop_ptr));
1645#endif 1712#endif
1646 if (expect_false (ev_is_active (w))) 1713 if (expect_false (ev_is_active (w)))
1647 return; 1714 return;
1648 1715
1649 ev_start (EV_A_ (W)w, 1); 1716 ev_start (EV_A_ (W)w, 1);
1650 wlist_add ((WL *)&childs [w->pid & (PID_HASHSIZE - 1)], (WL)w); 1717 wlist_add ((WL *)&childs [w->pid & (EV_PID_HASHSIZE - 1)], (WL)w);
1651} 1718}
1652 1719
1653void 1720void
1654ev_child_stop (EV_P_ struct ev_child *w) 1721ev_child_stop (EV_P_ ev_child *w)
1655{ 1722{
1656 ev_clear_pending (EV_A_ (W)w); 1723 ev_clear_pending (EV_A_ (W)w);
1657 if (expect_false (!ev_is_active (w))) 1724 if (expect_false (!ev_is_active (w)))
1658 return; 1725 return;
1659 1726
1660 wlist_del ((WL *)&childs [w->pid & (PID_HASHSIZE - 1)], (WL)w); 1727 wlist_del ((WL *)&childs [w->pid & (EV_PID_HASHSIZE - 1)], (WL)w);
1661 ev_stop (EV_A_ (W)w); 1728 ev_stop (EV_A_ (W)w);
1662} 1729}
1663 1730
1731#if EV_STAT_ENABLE
1732
1733# ifdef _WIN32
1734# undef lstat
1735# define lstat(a,b) _stati64 (a,b)
1736# endif
1737
1738#define DEF_STAT_INTERVAL 5.0074891
1739#define MIN_STAT_INTERVAL 0.1074891
1740
1741static void noinline stat_timer_cb (EV_P_ ev_timer *w_, int revents);
1742
1743#if EV_USE_INOTIFY
1744# define EV_INOTIFY_BUFSIZE 8192
1745
1746static void noinline
1747infy_add (EV_P_ ev_stat *w)
1748{
1749 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);
1750
1751 if (w->wd < 0)
1752 {
1753 ev_timer_start (EV_A_ &w->timer); /* this is not race-free, so we still need to recheck periodically */
1754
1755 /* monitor some parent directory for speedup hints */
1756 if ((errno == ENOENT || errno == EACCES) && strlen (w->path) < 4096)
1757 {
1758 char path [4096];
1759 strcpy (path, w->path);
1760
1761 do
1762 {
1763 int mask = IN_MASK_ADD | IN_DELETE_SELF | IN_MOVE_SELF
1764 | (errno == EACCES ? IN_ATTRIB : IN_CREATE | IN_MOVED_TO);
1765
1766 char *pend = strrchr (path, '/');
1767
1768 if (!pend)
1769 break; /* whoops, no '/', complain to your admin */
1770
1771 *pend = 0;
1772 w->wd = inotify_add_watch (fs_fd, path, mask);
1773 }
1774 while (w->wd < 0 && (errno == ENOENT || errno == EACCES));
1775 }
1776 }
1777 else
1778 ev_timer_stop (EV_A_ &w->timer); /* we can watch this in a race-free way */
1779
1780 if (w->wd >= 0)
1781 wlist_add (&fs_hash [w->wd & (EV_INOTIFY_HASHSIZE - 1)].head, (WL)w);
1782}
1783
1784static void noinline
1785infy_del (EV_P_ ev_stat *w)
1786{
1787 int slot;
1788 int wd = w->wd;
1789
1790 if (wd < 0)
1791 return;
1792
1793 w->wd = -2;
1794 slot = wd & (EV_INOTIFY_HASHSIZE - 1);
1795 wlist_del (&fs_hash [slot].head, (WL)w);
1796
1797 /* remove this watcher, if others are watching it, they will rearm */
1798 inotify_rm_watch (fs_fd, wd);
1799}
1800
1801static void noinline
1802infy_wd (EV_P_ int slot, int wd, struct inotify_event *ev)
1803{
1804 if (slot < 0)
1805 /* overflow, need to check for all hahs slots */
1806 for (slot = 0; slot < EV_INOTIFY_HASHSIZE; ++slot)
1807 infy_wd (EV_A_ slot, wd, ev);
1808 else
1809 {
1810 WL w_;
1811
1812 for (w_ = fs_hash [slot & (EV_INOTIFY_HASHSIZE - 1)].head; w_; )
1813 {
1814 ev_stat *w = (ev_stat *)w_;
1815 w_ = w_->next; /* lets us remove this watcher and all before it */
1816
1817 if (w->wd == wd || wd == -1)
1818 {
1819 if (ev->mask & (IN_IGNORED | IN_UNMOUNT | IN_DELETE_SELF))
1820 {
1821 w->wd = -1;
1822 infy_add (EV_A_ w); /* re-add, no matter what */
1823 }
1824
1825 stat_timer_cb (EV_A_ &w->timer, 0);
1826 }
1827 }
1828 }
1829}
1830
1831static void
1832infy_cb (EV_P_ ev_io *w, int revents)
1833{
1834 char buf [EV_INOTIFY_BUFSIZE];
1835 struct inotify_event *ev = (struct inotify_event *)buf;
1836 int ofs;
1837 int len = read (fs_fd, buf, sizeof (buf));
1838
1839 for (ofs = 0; ofs < len; ofs += sizeof (struct inotify_event) + ev->len)
1840 infy_wd (EV_A_ ev->wd, ev->wd, ev);
1841}
1842
1843void inline_size
1844infy_init (EV_P)
1845{
1846 if (fs_fd != -2)
1847 return;
1848
1849 fs_fd = inotify_init ();
1850
1851 if (fs_fd >= 0)
1852 {
1853 ev_io_init (&fs_w, infy_cb, fs_fd, EV_READ);
1854 ev_set_priority (&fs_w, EV_MAXPRI);
1855 ev_io_start (EV_A_ &fs_w);
1856 }
1857}
1858
1859void inline_size
1860infy_fork (EV_P)
1861{
1862 int slot;
1863
1864 if (fs_fd < 0)
1865 return;
1866
1867 close (fs_fd);
1868 fs_fd = inotify_init ();
1869
1870 for (slot = 0; slot < EV_INOTIFY_HASHSIZE; ++slot)
1871 {
1872 WL w_ = fs_hash [slot].head;
1873 fs_hash [slot].head = 0;
1874
1875 while (w_)
1876 {
1877 ev_stat *w = (ev_stat *)w_;
1878 w_ = w_->next; /* lets us add this watcher */
1879
1880 w->wd = -1;
1881
1882 if (fs_fd >= 0)
1883 infy_add (EV_A_ w); /* re-add, no matter what */
1884 else
1885 ev_timer_start (EV_A_ &w->timer);
1886 }
1887
1888 }
1889}
1890
1891#endif
1892
1893void
1894ev_stat_stat (EV_P_ ev_stat *w)
1895{
1896 if (lstat (w->path, &w->attr) < 0)
1897 w->attr.st_nlink = 0;
1898 else if (!w->attr.st_nlink)
1899 w->attr.st_nlink = 1;
1900}
1901
1902static void noinline
1903stat_timer_cb (EV_P_ ev_timer *w_, int revents)
1904{
1905 ev_stat *w = (ev_stat *)(((char *)w_) - offsetof (ev_stat, timer));
1906
1907 /* we copy this here each the time so that */
1908 /* prev has the old value when the callback gets invoked */
1909 w->prev = w->attr;
1910 ev_stat_stat (EV_A_ w);
1911
1912 /* memcmp doesn't work on netbsd, they.... do stuff to their struct stat */
1913 if (
1914 w->prev.st_dev != w->attr.st_dev
1915 || w->prev.st_ino != w->attr.st_ino
1916 || w->prev.st_mode != w->attr.st_mode
1917 || w->prev.st_nlink != w->attr.st_nlink
1918 || w->prev.st_uid != w->attr.st_uid
1919 || w->prev.st_gid != w->attr.st_gid
1920 || w->prev.st_rdev != w->attr.st_rdev
1921 || w->prev.st_size != w->attr.st_size
1922 || w->prev.st_atime != w->attr.st_atime
1923 || w->prev.st_mtime != w->attr.st_mtime
1924 || w->prev.st_ctime != w->attr.st_ctime
1925 ) {
1926 #if EV_USE_INOTIFY
1927 infy_del (EV_A_ w);
1928 infy_add (EV_A_ w);
1929 ev_stat_stat (EV_A_ w); /* avoid race... */
1930 #endif
1931
1932 ev_feed_event (EV_A_ w, EV_STAT);
1933 }
1934}
1935
1936void
1937ev_stat_start (EV_P_ ev_stat *w)
1938{
1939 if (expect_false (ev_is_active (w)))
1940 return;
1941
1942 /* since we use memcmp, we need to clear any padding data etc. */
1943 memset (&w->prev, 0, sizeof (ev_statdata));
1944 memset (&w->attr, 0, sizeof (ev_statdata));
1945
1946 ev_stat_stat (EV_A_ w);
1947
1948 if (w->interval < MIN_STAT_INTERVAL)
1949 w->interval = w->interval ? MIN_STAT_INTERVAL : DEF_STAT_INTERVAL;
1950
1951 ev_timer_init (&w->timer, stat_timer_cb, w->interval, w->interval);
1952 ev_set_priority (&w->timer, ev_priority (w));
1953
1954#if EV_USE_INOTIFY
1955 infy_init (EV_A);
1956
1957 if (fs_fd >= 0)
1958 infy_add (EV_A_ w);
1959 else
1960#endif
1961 ev_timer_start (EV_A_ &w->timer);
1962
1963 ev_start (EV_A_ (W)w, 1);
1964}
1965
1966void
1967ev_stat_stop (EV_P_ ev_stat *w)
1968{
1969 ev_clear_pending (EV_A_ (W)w);
1970 if (expect_false (!ev_is_active (w)))
1971 return;
1972
1973#if EV_USE_INOTIFY
1974 infy_del (EV_A_ w);
1975#endif
1976 ev_timer_stop (EV_A_ &w->timer);
1977
1978 ev_stop (EV_A_ (W)w);
1979}
1980#endif
1981
1982void
1983ev_idle_start (EV_P_ ev_idle *w)
1984{
1985 if (expect_false (ev_is_active (w)))
1986 return;
1987
1988 ev_start (EV_A_ (W)w, ++idlecnt);
1989 array_needsize (ev_idle *, idles, idlemax, idlecnt, EMPTY2);
1990 idles [idlecnt - 1] = w;
1991}
1992
1993void
1994ev_idle_stop (EV_P_ ev_idle *w)
1995{
1996 ev_clear_pending (EV_A_ (W)w);
1997 if (expect_false (!ev_is_active (w)))
1998 return;
1999
2000 {
2001 int active = ((W)w)->active;
2002 idles [active - 1] = idles [--idlecnt];
2003 ((W)idles [active - 1])->active = active;
2004 }
2005
2006 ev_stop (EV_A_ (W)w);
2007}
2008
2009void
2010ev_prepare_start (EV_P_ ev_prepare *w)
2011{
2012 if (expect_false (ev_is_active (w)))
2013 return;
2014
2015 ev_start (EV_A_ (W)w, ++preparecnt);
2016 array_needsize (ev_prepare *, prepares, preparemax, preparecnt, EMPTY2);
2017 prepares [preparecnt - 1] = w;
2018}
2019
2020void
2021ev_prepare_stop (EV_P_ ev_prepare *w)
2022{
2023 ev_clear_pending (EV_A_ (W)w);
2024 if (expect_false (!ev_is_active (w)))
2025 return;
2026
2027 {
2028 int active = ((W)w)->active;
2029 prepares [active - 1] = prepares [--preparecnt];
2030 ((W)prepares [active - 1])->active = active;
2031 }
2032
2033 ev_stop (EV_A_ (W)w);
2034}
2035
2036void
2037ev_check_start (EV_P_ ev_check *w)
2038{
2039 if (expect_false (ev_is_active (w)))
2040 return;
2041
2042 ev_start (EV_A_ (W)w, ++checkcnt);
2043 array_needsize (ev_check *, checks, checkmax, checkcnt, EMPTY2);
2044 checks [checkcnt - 1] = w;
2045}
2046
2047void
2048ev_check_stop (EV_P_ ev_check *w)
2049{
2050 ev_clear_pending (EV_A_ (W)w);
2051 if (expect_false (!ev_is_active (w)))
2052 return;
2053
2054 {
2055 int active = ((W)w)->active;
2056 checks [active - 1] = checks [--checkcnt];
2057 ((W)checks [active - 1])->active = active;
2058 }
2059
2060 ev_stop (EV_A_ (W)w);
2061}
2062
2063#if EV_EMBED_ENABLE
2064void noinline
2065ev_embed_sweep (EV_P_ ev_embed *w)
2066{
2067 ev_loop (w->loop, EVLOOP_NONBLOCK);
2068}
2069
2070static void
2071embed_cb (EV_P_ ev_io *io, int revents)
2072{
2073 ev_embed *w = (ev_embed *)(((char *)io) - offsetof (ev_embed, io));
2074
2075 if (ev_cb (w))
2076 ev_feed_event (EV_A_ (W)w, EV_EMBED);
2077 else
2078 ev_embed_sweep (loop, w);
2079}
2080
2081void
2082ev_embed_start (EV_P_ ev_embed *w)
2083{
2084 if (expect_false (ev_is_active (w)))
2085 return;
2086
2087 {
2088 struct ev_loop *loop = w->loop;
2089 assert (("loop to be embedded is not embeddable", backend & ev_embeddable_backends ()));
2090 ev_io_init (&w->io, embed_cb, backend_fd, EV_READ);
2091 }
2092
2093 ev_set_priority (&w->io, ev_priority (w));
2094 ev_io_start (EV_A_ &w->io);
2095
2096 ev_start (EV_A_ (W)w, 1);
2097}
2098
2099void
2100ev_embed_stop (EV_P_ ev_embed *w)
2101{
2102 ev_clear_pending (EV_A_ (W)w);
2103 if (expect_false (!ev_is_active (w)))
2104 return;
2105
2106 ev_io_stop (EV_A_ &w->io);
2107
2108 ev_stop (EV_A_ (W)w);
2109}
2110#endif
2111
2112#if EV_FORK_ENABLE
2113void
2114ev_fork_start (EV_P_ ev_fork *w)
2115{
2116 if (expect_false (ev_is_active (w)))
2117 return;
2118
2119 ev_start (EV_A_ (W)w, ++forkcnt);
2120 array_needsize (ev_fork *, forks, forkmax, forkcnt, EMPTY2);
2121 forks [forkcnt - 1] = w;
2122}
2123
2124void
2125ev_fork_stop (EV_P_ ev_fork *w)
2126{
2127 ev_clear_pending (EV_A_ (W)w);
2128 if (expect_false (!ev_is_active (w)))
2129 return;
2130
2131 {
2132 int active = ((W)w)->active;
2133 forks [active - 1] = forks [--forkcnt];
2134 ((W)forks [active - 1])->active = active;
2135 }
2136
2137 ev_stop (EV_A_ (W)w);
2138}
2139#endif
2140
1664/*****************************************************************************/ 2141/*****************************************************************************/
1665 2142
1666struct ev_once 2143struct ev_once
1667{ 2144{
1668 struct ev_io io; 2145 ev_io io;
1669 struct ev_timer to; 2146 ev_timer to;
1670 void (*cb)(int revents, void *arg); 2147 void (*cb)(int revents, void *arg);
1671 void *arg; 2148 void *arg;
1672}; 2149};
1673 2150
1674static void 2151static void
1683 2160
1684 cb (revents, arg); 2161 cb (revents, arg);
1685} 2162}
1686 2163
1687static void 2164static void
1688once_cb_io (EV_P_ struct ev_io *w, int revents) 2165once_cb_io (EV_P_ ev_io *w, int revents)
1689{ 2166{
1690 once_cb (EV_A_ (struct ev_once *)(((char *)w) - offsetof (struct ev_once, io)), revents); 2167 once_cb (EV_A_ (struct ev_once *)(((char *)w) - offsetof (struct ev_once, io)), revents);
1691} 2168}
1692 2169
1693static void 2170static void
1694once_cb_to (EV_P_ struct ev_timer *w, int revents) 2171once_cb_to (EV_P_ ev_timer *w, int revents)
1695{ 2172{
1696 once_cb (EV_A_ (struct ev_once *)(((char *)w) - offsetof (struct ev_once, to)), revents); 2173 once_cb (EV_A_ (struct ev_once *)(((char *)w) - offsetof (struct ev_once, to)), revents);
1697} 2174}
1698 2175
1699void 2176void

Diff Legend

Removed lines
+ Added lines
< Changed lines
> Changed lines