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Comparing libev/ev.c (file contents):
Revision 1.134 by root, Fri Nov 23 19:13:33 2007 UTC vs.
Revision 1.160 by root, Sat Dec 1 22:57:20 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))
397 { 437 {
398 pendings [ABSPRI (w_)][w_->pending - 1].events |= revents; 438 pendings [ABSPRI (w_)][w_->pending - 1].events |= revents;
399 return; 439 return;
400 } 440 }
401
402 if (expect_false (!w_->cb))
403 return;
404 441
405 w_->pending = ++pendingcnt [ABSPRI (w_)]; 442 w_->pending = ++pendingcnt [ABSPRI (w_)];
406 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);
407 pendings [ABSPRI (w_)][w_->pending - 1].w = w_; 444 pendings [ABSPRI (w_)][w_->pending - 1].w = w_;
408 pendings [ABSPRI (w_)][w_->pending - 1].events = revents; 445 pendings [ABSPRI (w_)][w_->pending - 1].events = revents;
409} 446}
410 447
411static void 448void inline_size
412queue_events (EV_P_ W *events, int eventcnt, int type) 449queue_events (EV_P_ W *events, int eventcnt, int type)
413{ 450{
414 int i; 451 int i;
415 452
416 for (i = 0; i < eventcnt; ++i) 453 for (i = 0; i < eventcnt; ++i)
417 ev_feed_event (EV_A_ events [i], type); 454 ev_feed_event (EV_A_ events [i], type);
418} 455}
419 456
420inline 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
421fd_event (EV_P_ int fd, int revents) 473fd_event (EV_P_ int fd, int revents)
422{ 474{
423 ANFD *anfd = anfds + fd; 475 ANFD *anfd = anfds + fd;
424 struct ev_io *w; 476 ev_io *w;
425 477
426 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)
427 { 479 {
428 int ev = w->events & revents; 480 int ev = w->events & revents;
429 481
430 if (ev) 482 if (ev)
431 ev_feed_event (EV_A_ (W)w, ev); 483 ev_feed_event (EV_A_ (W)w, ev);
436ev_feed_fd_event (EV_P_ int fd, int revents) 488ev_feed_fd_event (EV_P_ int fd, int revents)
437{ 489{
438 fd_event (EV_A_ fd, revents); 490 fd_event (EV_A_ fd, revents);
439} 491}
440 492
441/*****************************************************************************/ 493void inline_size
442
443inline void
444fd_reify (EV_P) 494fd_reify (EV_P)
445{ 495{
446 int i; 496 int i;
447 497
448 for (i = 0; i < fdchangecnt; ++i) 498 for (i = 0; i < fdchangecnt; ++i)
449 { 499 {
450 int fd = fdchanges [i]; 500 int fd = fdchanges [i];
451 ANFD *anfd = anfds + fd; 501 ANFD *anfd = anfds + fd;
452 struct ev_io *w; 502 ev_io *w;
453 503
454 int events = 0; 504 int events = 0;
455 505
456 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)
457 events |= w->events; 507 events |= w->events;
458 508
459#if EV_SELECT_IS_WINSOCKET 509#if EV_SELECT_IS_WINSOCKET
460 if (events) 510 if (events)
461 { 511 {
472 } 522 }
473 523
474 fdchangecnt = 0; 524 fdchangecnt = 0;
475} 525}
476 526
477static void 527void inline_size
478fd_change (EV_P_ int fd) 528fd_change (EV_P_ int fd)
479{ 529{
480 if (expect_false (anfds [fd].reify)) 530 if (expect_false (anfds [fd].reify))
481 return; 531 return;
482 532
485 ++fdchangecnt; 535 ++fdchangecnt;
486 array_needsize (int, fdchanges, fdchangemax, fdchangecnt, EMPTY2); 536 array_needsize (int, fdchanges, fdchangemax, fdchangecnt, EMPTY2);
487 fdchanges [fdchangecnt - 1] = fd; 537 fdchanges [fdchangecnt - 1] = fd;
488} 538}
489 539
490static void 540void inline_speed
491fd_kill (EV_P_ int fd) 541fd_kill (EV_P_ int fd)
492{ 542{
493 struct ev_io *w; 543 ev_io *w;
494 544
495 while ((w = (struct ev_io *)anfds [fd].head)) 545 while ((w = (ev_io *)anfds [fd].head))
496 { 546 {
497 ev_io_stop (EV_A_ w); 547 ev_io_stop (EV_A_ w);
498 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);
499 } 549 }
500} 550}
501 551
502inline int 552int inline_size
503fd_valid (int fd) 553fd_valid (int fd)
504{ 554{
505#ifdef _WIN32 555#ifdef _WIN32
506 return _get_osfhandle (fd) != -1; 556 return _get_osfhandle (fd) != -1;
507#else 557#else
508 return fcntl (fd, F_GETFD) != -1; 558 return fcntl (fd, F_GETFD) != -1;
509#endif 559#endif
510} 560}
511 561
512/* called on EBADF to verify fds */ 562/* called on EBADF to verify fds */
513static void 563static void noinline
514fd_ebadf (EV_P) 564fd_ebadf (EV_P)
515{ 565{
516 int fd; 566 int fd;
517 567
518 for (fd = 0; fd < anfdmax; ++fd) 568 for (fd = 0; fd < anfdmax; ++fd)
520 if (!fd_valid (fd) == -1 && errno == EBADF) 570 if (!fd_valid (fd) == -1 && errno == EBADF)
521 fd_kill (EV_A_ fd); 571 fd_kill (EV_A_ fd);
522} 572}
523 573
524/* 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 */
525static void 575static void noinline
526fd_enomem (EV_P) 576fd_enomem (EV_P)
527{ 577{
528 int fd; 578 int fd;
529 579
530 for (fd = anfdmax; fd--; ) 580 for (fd = anfdmax; fd--; )
534 return; 584 return;
535 } 585 }
536} 586}
537 587
538/* 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 */
539static void 589static void noinline
540fd_rearm_all (EV_P) 590fd_rearm_all (EV_P)
541{ 591{
542 int fd; 592 int fd;
543 593
544 /* this should be highly optimised to not do anything but set a flag */
545 for (fd = 0; fd < anfdmax; ++fd) 594 for (fd = 0; fd < anfdmax; ++fd)
546 if (anfds [fd].events) 595 if (anfds [fd].events)
547 { 596 {
548 anfds [fd].events = 0; 597 anfds [fd].events = 0;
549 fd_change (EV_A_ fd); 598 fd_change (EV_A_ fd);
550 } 599 }
551} 600}
552 601
553/*****************************************************************************/ 602/*****************************************************************************/
554 603
555static void 604void inline_speed
556upheap (WT *heap, int k) 605upheap (WT *heap, int k)
557{ 606{
558 WT w = heap [k]; 607 WT w = heap [k];
559 608
560 while (k && heap [k >> 1]->at > w->at) 609 while (k && heap [k >> 1]->at > w->at)
567 heap [k] = w; 616 heap [k] = w;
568 ((W)heap [k])->active = k + 1; 617 ((W)heap [k])->active = k + 1;
569 618
570} 619}
571 620
572static void 621void inline_speed
573downheap (WT *heap, int N, int k) 622downheap (WT *heap, int N, int k)
574{ 623{
575 WT w = heap [k]; 624 WT w = heap [k];
576 625
577 while (k < (N >> 1)) 626 while (k < (N >> 1))
591 640
592 heap [k] = w; 641 heap [k] = w;
593 ((W)heap [k])->active = k + 1; 642 ((W)heap [k])->active = k + 1;
594} 643}
595 644
596inline void 645void inline_size
597adjustheap (WT *heap, int N, int k) 646adjustheap (WT *heap, int N, int k)
598{ 647{
599 upheap (heap, k); 648 upheap (heap, k);
600 downheap (heap, N, k); 649 downheap (heap, N, k);
601} 650}
611static ANSIG *signals; 660static ANSIG *signals;
612static int signalmax; 661static int signalmax;
613 662
614static int sigpipe [2]; 663static int sigpipe [2];
615static sig_atomic_t volatile gotsig; 664static sig_atomic_t volatile gotsig;
616static struct ev_io sigev; 665static ev_io sigev;
617 666
618static void 667void inline_size
619signals_init (ANSIG *base, int count) 668signals_init (ANSIG *base, int count)
620{ 669{
621 while (count--) 670 while (count--)
622 { 671 {
623 base->head = 0; 672 base->head = 0;
643 write (sigpipe [1], &signum, 1); 692 write (sigpipe [1], &signum, 1);
644 errno = old_errno; 693 errno = old_errno;
645 } 694 }
646} 695}
647 696
648void 697void noinline
649ev_feed_signal_event (EV_P_ int signum) 698ev_feed_signal_event (EV_P_ int signum)
650{ 699{
651 WL w; 700 WL w;
652 701
653#if EV_MULTIPLICITY 702#if EV_MULTIPLICITY
664 for (w = signals [signum].head; w; w = w->next) 713 for (w = signals [signum].head; w; w = w->next)
665 ev_feed_event (EV_A_ (W)w, EV_SIGNAL); 714 ev_feed_event (EV_A_ (W)w, EV_SIGNAL);
666} 715}
667 716
668static void 717static void
669sigcb (EV_P_ struct ev_io *iow, int revents) 718sigcb (EV_P_ ev_io *iow, int revents)
670{ 719{
671 int signum; 720 int signum;
672 721
673 read (sigpipe [0], &revents, 1); 722 read (sigpipe [0], &revents, 1);
674 gotsig = 0; 723 gotsig = 0;
676 for (signum = signalmax; signum--; ) 725 for (signum = signalmax; signum--; )
677 if (signals [signum].gotsig) 726 if (signals [signum].gotsig)
678 ev_feed_signal_event (EV_A_ signum + 1); 727 ev_feed_signal_event (EV_A_ signum + 1);
679} 728}
680 729
681static void 730void inline_size
682fd_intern (int fd) 731fd_intern (int fd)
683{ 732{
684#ifdef _WIN32 733#ifdef _WIN32
685 int arg = 1; 734 int arg = 1;
686 ioctlsocket (_get_osfhandle (fd), FIONBIO, &arg); 735 ioctlsocket (_get_osfhandle (fd), FIONBIO, &arg);
688 fcntl (fd, F_SETFD, FD_CLOEXEC); 737 fcntl (fd, F_SETFD, FD_CLOEXEC);
689 fcntl (fd, F_SETFL, O_NONBLOCK); 738 fcntl (fd, F_SETFL, O_NONBLOCK);
690#endif 739#endif
691} 740}
692 741
693static void 742static void noinline
694siginit (EV_P) 743siginit (EV_P)
695{ 744{
696 fd_intern (sigpipe [0]); 745 fd_intern (sigpipe [0]);
697 fd_intern (sigpipe [1]); 746 fd_intern (sigpipe [1]);
698 747
701 ev_unref (EV_A); /* child watcher should not keep loop alive */ 750 ev_unref (EV_A); /* child watcher should not keep loop alive */
702} 751}
703 752
704/*****************************************************************************/ 753/*****************************************************************************/
705 754
706static struct ev_child *childs [PID_HASHSIZE]; 755static ev_child *childs [EV_PID_HASHSIZE];
707 756
708#ifndef _WIN32 757#ifndef _WIN32
709 758
710static struct ev_signal childev; 759static ev_signal childev;
711 760
712#ifndef WCONTINUED 761void inline_speed
713# define WCONTINUED 0
714#endif
715
716static void
717child_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)
718{ 763{
719 struct ev_child *w; 764 ev_child *w;
720 765
721 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)
722 if (w->pid == pid || !w->pid) 767 if (w->pid == pid || !w->pid)
723 { 768 {
724 ev_priority (w) = ev_priority (sw); /* need to do it *now* */ 769 ev_priority (w) = ev_priority (sw); /* need to do it *now* */
725 w->rpid = pid; 770 w->rpid = pid;
726 w->rstatus = status; 771 w->rstatus = status;
727 ev_feed_event (EV_A_ (W)w, EV_CHILD); 772 ev_feed_event (EV_A_ (W)w, EV_CHILD);
728 } 773 }
729} 774}
730 775
776#ifndef WCONTINUED
777# define WCONTINUED 0
778#endif
779
731static void 780static void
732childcb (EV_P_ struct ev_signal *sw, int revents) 781childcb (EV_P_ ev_signal *sw, int revents)
733{ 782{
734 int pid, status; 783 int pid, status;
735 784
785 /* some systems define WCONTINUED but then fail to support it (linux 2.4) */
736 if (0 < (pid = waitpid (-1, &status, WNOHANG | WUNTRACED | WCONTINUED))) 786 if (0 >= (pid = waitpid (-1, &status, WNOHANG | WUNTRACED | WCONTINUED)))
737 { 787 if (!WCONTINUED
788 || errno != EINVAL
789 || 0 >= (pid = waitpid (-1, &status, WNOHANG | WUNTRACED)))
790 return;
791
738 /* 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 */
739 /* 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 */
740 ev_feed_event (EV_A_ (W)sw, EV_SIGNAL); 794 ev_feed_event (EV_A_ (W)sw, EV_SIGNAL);
741 795
742 child_reap (EV_A_ sw, pid, pid, status); 796 child_reap (EV_A_ sw, pid, pid, status);
797 if (EV_PID_HASHSIZE > 1)
743 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 */
744 }
745} 799}
746 800
747#endif 801#endif
748 802
749/*****************************************************************************/ 803/*****************************************************************************/
775{ 829{
776 return EV_VERSION_MINOR; 830 return EV_VERSION_MINOR;
777} 831}
778 832
779/* 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 */
780static int 834int inline_size
781enable_secure (void) 835enable_secure (void)
782{ 836{
783#ifdef _WIN32 837#ifdef _WIN32
784 return 0; 838 return 0;
785#else 839#else
832ev_backend (EV_P) 886ev_backend (EV_P)
833{ 887{
834 return backend; 888 return backend;
835} 889}
836 890
837static void 891static void noinline
838loop_init (EV_P_ unsigned int flags) 892loop_init (EV_P_ unsigned int flags)
839{ 893{
840 if (!backend) 894 if (!backend)
841 { 895 {
842#if EV_USE_MONOTONIC 896#if EV_USE_MONOTONIC
850 ev_rt_now = ev_time (); 904 ev_rt_now = ev_time ();
851 mn_now = get_clock (); 905 mn_now = get_clock ();
852 now_floor = mn_now; 906 now_floor = mn_now;
853 rtmn_diff = ev_rt_now - mn_now; 907 rtmn_diff = ev_rt_now - mn_now;
854 908
909 /* pid check not overridable via env */
910#ifndef _WIN32
911 if (flags & EVFLAG_FORKCHECK)
912 curpid = getpid ();
913#endif
914
855 if (!(flags & EVFLAG_NOENV) 915 if (!(flags & EVFLAG_NOENV)
856 && !enable_secure () 916 && !enable_secure ()
857 && getenv ("LIBEV_FLAGS")) 917 && getenv ("LIBEV_FLAGS"))
858 flags = atoi (getenv ("LIBEV_FLAGS")); 918 flags = atoi (getenv ("LIBEV_FLAGS"));
859 919
860 if (!(flags & 0x0000ffffUL)) 920 if (!(flags & 0x0000ffffUL))
861 flags |= ev_recommended_backends (); 921 flags |= ev_recommended_backends ();
862 922
863 backend = 0; 923 backend = 0;
924 backend_fd = -1;
925#if EV_USE_INOTIFY
926 fs_fd = -2;
927#endif
928
864#if EV_USE_PORT 929#if EV_USE_PORT
865 if (!backend && (flags & EVBACKEND_PORT )) backend = port_init (EV_A_ flags); 930 if (!backend && (flags & EVBACKEND_PORT )) backend = port_init (EV_A_ flags);
866#endif 931#endif
867#if EV_USE_KQUEUE 932#if EV_USE_KQUEUE
868 if (!backend && (flags & EVBACKEND_KQUEUE)) backend = kqueue_init (EV_A_ flags); 933 if (!backend && (flags & EVBACKEND_KQUEUE)) backend = kqueue_init (EV_A_ flags);
880 ev_init (&sigev, sigcb); 945 ev_init (&sigev, sigcb);
881 ev_set_priority (&sigev, EV_MAXPRI); 946 ev_set_priority (&sigev, EV_MAXPRI);
882 } 947 }
883} 948}
884 949
885static void 950static void noinline
886loop_destroy (EV_P) 951loop_destroy (EV_P)
887{ 952{
888 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);
889 962
890#if EV_USE_PORT 963#if EV_USE_PORT
891 if (backend == EVBACKEND_PORT ) port_destroy (EV_A); 964 if (backend == EVBACKEND_PORT ) port_destroy (EV_A);
892#endif 965#endif
893#if EV_USE_KQUEUE 966#if EV_USE_KQUEUE
907 array_free (pending, [i]); 980 array_free (pending, [i]);
908 981
909 /* have to use the microsoft-never-gets-it-right macro */ 982 /* have to use the microsoft-never-gets-it-right macro */
910 array_free (fdchange, EMPTY0); 983 array_free (fdchange, EMPTY0);
911 array_free (timer, EMPTY0); 984 array_free (timer, EMPTY0);
912#if EV_PERIODICS 985#if EV_PERIODIC_ENABLE
913 array_free (periodic, EMPTY0); 986 array_free (periodic, EMPTY0);
914#endif 987#endif
915 array_free (idle, EMPTY0); 988 array_free (idle, EMPTY0);
916 array_free (prepare, EMPTY0); 989 array_free (prepare, EMPTY0);
917 array_free (check, EMPTY0); 990 array_free (check, EMPTY0);
918 991
919 backend = 0; 992 backend = 0;
920} 993}
921 994
922static void 995void inline_size infy_fork (EV_P);
996
997void inline_size
923loop_fork (EV_P) 998loop_fork (EV_P)
924{ 999{
925#if EV_USE_PORT 1000#if EV_USE_PORT
926 if (backend == EVBACKEND_PORT ) port_fork (EV_A); 1001 if (backend == EVBACKEND_PORT ) port_fork (EV_A);
927#endif 1002#endif
928#if EV_USE_KQUEUE 1003#if EV_USE_KQUEUE
929 if (backend == EVBACKEND_KQUEUE) kqueue_fork (EV_A); 1004 if (backend == EVBACKEND_KQUEUE) kqueue_fork (EV_A);
930#endif 1005#endif
931#if EV_USE_EPOLL 1006#if EV_USE_EPOLL
932 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);
933#endif 1011#endif
934 1012
935 if (ev_is_active (&sigev)) 1013 if (ev_is_active (&sigev))
936 { 1014 {
937 /* default loop */ 1015 /* default loop */
1053 postfork = 1; 1131 postfork = 1;
1054} 1132}
1055 1133
1056/*****************************************************************************/ 1134/*****************************************************************************/
1057 1135
1058static int 1136int inline_size
1059any_pending (EV_P) 1137any_pending (EV_P)
1060{ 1138{
1061 int pri; 1139 int pri;
1062 1140
1063 for (pri = NUMPRI; pri--; ) 1141 for (pri = NUMPRI; pri--; )
1065 return 1; 1143 return 1;
1066 1144
1067 return 0; 1145 return 0;
1068} 1146}
1069 1147
1070inline void 1148void inline_speed
1071call_pending (EV_P) 1149call_pending (EV_P)
1072{ 1150{
1073 int pri; 1151 int pri;
1074 1152
1075 for (pri = NUMPRI; pri--; ) 1153 for (pri = NUMPRI; pri--; )
1077 { 1155 {
1078 ANPENDING *p = pendings [pri] + --pendingcnt [pri]; 1156 ANPENDING *p = pendings [pri] + --pendingcnt [pri];
1079 1157
1080 if (expect_true (p->w)) 1158 if (expect_true (p->w))
1081 { 1159 {
1160 /*assert (("non-pending watcher on pending list", p->w->pending));*/
1161
1082 p->w->pending = 0; 1162 p->w->pending = 0;
1083 EV_CB_INVOKE (p->w, p->events); 1163 EV_CB_INVOKE (p->w, p->events);
1084 } 1164 }
1085 } 1165 }
1086} 1166}
1087 1167
1088inline void 1168void inline_size
1089timers_reify (EV_P) 1169timers_reify (EV_P)
1090{ 1170{
1091 while (timercnt && ((WT)timers [0])->at <= mn_now) 1171 while (timercnt && ((WT)timers [0])->at <= mn_now)
1092 { 1172 {
1093 struct ev_timer *w = timers [0]; 1173 ev_timer *w = timers [0];
1094 1174
1095 assert (("inactive timer on timer heap detected", ev_is_active (w))); 1175 /*assert (("inactive timer on timer heap detected", ev_is_active (w)));*/
1096 1176
1097 /* first reschedule or stop timer */ 1177 /* first reschedule or stop timer */
1098 if (w->repeat) 1178 if (w->repeat)
1099 { 1179 {
1100 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.));
1110 1190
1111 ev_feed_event (EV_A_ (W)w, EV_TIMEOUT); 1191 ev_feed_event (EV_A_ (W)w, EV_TIMEOUT);
1112 } 1192 }
1113} 1193}
1114 1194
1115#if EV_PERIODICS 1195#if EV_PERIODIC_ENABLE
1116inline void 1196void inline_size
1117periodics_reify (EV_P) 1197periodics_reify (EV_P)
1118{ 1198{
1119 while (periodiccnt && ((WT)periodics [0])->at <= ev_rt_now) 1199 while (periodiccnt && ((WT)periodics [0])->at <= ev_rt_now)
1120 { 1200 {
1121 struct ev_periodic *w = periodics [0]; 1201 ev_periodic *w = periodics [0];
1122 1202
1123 assert (("inactive timer on periodic heap detected", ev_is_active (w))); 1203 /*assert (("inactive timer on periodic heap detected", ev_is_active (w)));*/
1124 1204
1125 /* first reschedule or stop timer */ 1205 /* first reschedule or stop timer */
1126 if (w->reschedule_cb) 1206 if (w->reschedule_cb)
1127 { 1207 {
1128 ((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);
1140 1220
1141 ev_feed_event (EV_A_ (W)w, EV_PERIODIC); 1221 ev_feed_event (EV_A_ (W)w, EV_PERIODIC);
1142 } 1222 }
1143} 1223}
1144 1224
1145static void 1225static void noinline
1146periodics_reschedule (EV_P) 1226periodics_reschedule (EV_P)
1147{ 1227{
1148 int i; 1228 int i;
1149 1229
1150 /* adjust periodics after time jump */ 1230 /* adjust periodics after time jump */
1151 for (i = 0; i < periodiccnt; ++i) 1231 for (i = 0; i < periodiccnt; ++i)
1152 { 1232 {
1153 struct ev_periodic *w = periodics [i]; 1233 ev_periodic *w = periodics [i];
1154 1234
1155 if (w->reschedule_cb) 1235 if (w->reschedule_cb)
1156 ((WT)w)->at = w->reschedule_cb (w, ev_rt_now); 1236 ((WT)w)->at = w->reschedule_cb (w, ev_rt_now);
1157 else if (w->interval) 1237 else if (w->interval)
1158 ((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;
1162 for (i = periodiccnt >> 1; i--; ) 1242 for (i = periodiccnt >> 1; i--; )
1163 downheap ((WT *)periodics, periodiccnt, i); 1243 downheap ((WT *)periodics, periodiccnt, i);
1164} 1244}
1165#endif 1245#endif
1166 1246
1167inline int 1247int inline_size
1168time_update_monotonic (EV_P) 1248time_update_monotonic (EV_P)
1169{ 1249{
1170 mn_now = get_clock (); 1250 mn_now = get_clock ();
1171 1251
1172 if (expect_true (mn_now - now_floor < MIN_TIMEJUMP * .5)) 1252 if (expect_true (mn_now - now_floor < MIN_TIMEJUMP * .5))
1180 ev_rt_now = ev_time (); 1260 ev_rt_now = ev_time ();
1181 return 1; 1261 return 1;
1182 } 1262 }
1183} 1263}
1184 1264
1185inline void 1265void inline_size
1186time_update (EV_P) 1266time_update (EV_P)
1187{ 1267{
1188 int i; 1268 int i;
1189 1269
1190#if EV_USE_MONOTONIC 1270#if EV_USE_MONOTONIC
1192 { 1272 {
1193 if (time_update_monotonic (EV_A)) 1273 if (time_update_monotonic (EV_A))
1194 { 1274 {
1195 ev_tstamp odiff = rtmn_diff; 1275 ev_tstamp odiff = rtmn_diff;
1196 1276
1197 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; )
1198 { 1286 {
1199 rtmn_diff = ev_rt_now - mn_now; 1287 rtmn_diff = ev_rt_now - mn_now;
1200 1288
1201 if (fabs (odiff - rtmn_diff) < MIN_TIMEJUMP) 1289 if (fabs (odiff - rtmn_diff) < MIN_TIMEJUMP)
1202 return; /* all is well */ 1290 return; /* all is well */
1204 ev_rt_now = ev_time (); 1292 ev_rt_now = ev_time ();
1205 mn_now = get_clock (); 1293 mn_now = get_clock ();
1206 now_floor = mn_now; 1294 now_floor = mn_now;
1207 } 1295 }
1208 1296
1209# if EV_PERIODICS 1297# if EV_PERIODIC_ENABLE
1210 periodics_reschedule (EV_A); 1298 periodics_reschedule (EV_A);
1211# endif 1299# endif
1212 /* no timer adjustment, as the monotonic clock doesn't jump */ 1300 /* no timer adjustment, as the monotonic clock doesn't jump */
1213 /* timers_reschedule (EV_A_ rtmn_diff - odiff) */ 1301 /* timers_reschedule (EV_A_ rtmn_diff - odiff) */
1214 } 1302 }
1218 { 1306 {
1219 ev_rt_now = ev_time (); 1307 ev_rt_now = ev_time ();
1220 1308
1221 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))
1222 { 1310 {
1223#if EV_PERIODICS 1311#if EV_PERIODIC_ENABLE
1224 periodics_reschedule (EV_A); 1312 periodics_reschedule (EV_A);
1225#endif 1313#endif
1226 1314
1227 /* 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 */
1228 for (i = 0; i < timercnt; ++i) 1316 for (i = 0; i < timercnt; ++i)
1229 ((WT)timers [i])->at += ev_rt_now - mn_now; 1317 ((WT)timers [i])->at += ev_rt_now - mn_now;
1230 } 1318 }
1231 1319
1232 mn_now = ev_rt_now; 1320 mn_now = ev_rt_now;
1248static int loop_done; 1336static int loop_done;
1249 1337
1250void 1338void
1251ev_loop (EV_P_ int flags) 1339ev_loop (EV_P_ int flags)
1252{ 1340{
1253 double block;
1254 loop_done = flags & (EVLOOP_ONESHOT | EVLOOP_NONBLOCK) ? 1 : 0; 1341 loop_done = flags & (EVLOOP_ONESHOT | EVLOOP_NONBLOCK)
1342 ? EVUNLOOP_ONE
1343 : EVUNLOOP_CANCEL;
1255 1344
1256 while (activecnt) 1345 call_pending (EV_A); /* in case we recurse, ensure ordering stays nice and clean */
1346
1347 while (expect_false (!activecnt))
1257 { 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
1258 /* queue check watchers (and execute them) */ 1368 /* queue check watchers (and execute them) */
1259 if (expect_false (preparecnt)) 1369 if (expect_false (preparecnt))
1260 { 1370 {
1261 queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE); 1371 queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE);
1262 call_pending (EV_A); 1372 call_pending (EV_A);
1263 } 1373 }
1264 1374
1375 if (expect_false (!activecnt))
1376 break;
1377
1265 /* we might have forked, so reify kernel state if necessary */ 1378 /* we might have forked, so reify kernel state if necessary */
1266 if (expect_false (postfork)) 1379 if (expect_false (postfork))
1267 loop_fork (EV_A); 1380 loop_fork (EV_A);
1268 1381
1269 /* update fd-related kernel structures */ 1382 /* update fd-related kernel structures */
1270 fd_reify (EV_A); 1383 fd_reify (EV_A);
1271 1384
1272 /* calculate blocking time */ 1385 /* calculate blocking time */
1386 {
1387 ev_tstamp block;
1273 1388
1274 /* we only need this for !monotonic clock or timers, but as we basically 1389 if (expect_false (flags & EVLOOP_NONBLOCK || idlecnt || !activecnt))
1275 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 */
1276#if EV_USE_MONOTONIC 1394#if EV_USE_MONOTONIC
1277 if (expect_true (have_monotonic)) 1395 if (expect_true (have_monotonic))
1278 time_update_monotonic (EV_A); 1396 time_update_monotonic (EV_A);
1279 else 1397 else
1280#endif 1398#endif
1281 { 1399 {
1282 ev_rt_now = ev_time (); 1400 ev_rt_now = ev_time ();
1283 mn_now = ev_rt_now; 1401 mn_now = ev_rt_now;
1284 } 1402 }
1285 1403
1286 if (flags & EVLOOP_NONBLOCK || idlecnt)
1287 block = 0.;
1288 else
1289 {
1290 block = MAX_BLOCKTIME; 1404 block = MAX_BLOCKTIME;
1291 1405
1292 if (timercnt) 1406 if (timercnt)
1293 { 1407 {
1294 ev_tstamp to = ((WT)timers [0])->at - mn_now + backend_fudge; 1408 ev_tstamp to = ((WT)timers [0])->at - mn_now + backend_fudge;
1295 if (block > to) block = to; 1409 if (block > to) block = to;
1296 } 1410 }
1297 1411
1298#if EV_PERIODICS 1412#if EV_PERIODIC_ENABLE
1299 if (periodiccnt) 1413 if (periodiccnt)
1300 { 1414 {
1301 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;
1302 if (block > to) block = to; 1416 if (block > to) block = to;
1303 } 1417 }
1304#endif 1418#endif
1305 1419
1306 if (expect_false (block < 0.)) block = 0.; 1420 if (expect_false (block < 0.)) block = 0.;
1307 } 1421 }
1308 1422
1309 backend_poll (EV_A_ block); 1423 backend_poll (EV_A_ block);
1424 }
1310 1425
1311 /* update ev_rt_now, do magic */ 1426 /* update ev_rt_now, do magic */
1312 time_update (EV_A); 1427 time_update (EV_A);
1313 1428
1314 /* queue pending timers and reschedule them */ 1429 /* queue pending timers and reschedule them */
1315 timers_reify (EV_A); /* relative timers called last */ 1430 timers_reify (EV_A); /* relative timers called last */
1316#if EV_PERIODICS 1431#if EV_PERIODIC_ENABLE
1317 periodics_reify (EV_A); /* absolute timers called first */ 1432 periodics_reify (EV_A); /* absolute timers called first */
1318#endif 1433#endif
1319 1434
1320 /* queue idle watchers unless io or timers are pending */ 1435 /* queue idle watchers unless other events are pending */
1321 if (idlecnt && !any_pending (EV_A)) 1436 if (idlecnt && !any_pending (EV_A))
1322 queue_events (EV_A_ (W *)idles, idlecnt, EV_IDLE); 1437 queue_events (EV_A_ (W *)idles, idlecnt, EV_IDLE);
1323 1438
1324 /* queue check watchers, to be executed first */ 1439 /* queue check watchers, to be executed first */
1325 if (expect_false (checkcnt)) 1440 if (expect_false (checkcnt))
1329 1444
1330 if (expect_false (loop_done)) 1445 if (expect_false (loop_done))
1331 break; 1446 break;
1332 } 1447 }
1333 1448
1334 if (loop_done != 2) 1449 if (loop_done == EVUNLOOP_ONE)
1335 loop_done = 0; 1450 loop_done = EVUNLOOP_CANCEL;
1336} 1451}
1337 1452
1338void 1453void
1339ev_unloop (EV_P_ int how) 1454ev_unloop (EV_P_ int how)
1340{ 1455{
1341 loop_done = how; 1456 loop_done = how;
1342} 1457}
1343 1458
1344/*****************************************************************************/ 1459/*****************************************************************************/
1345 1460
1346inline void 1461void inline_size
1347wlist_add (WL *head, WL elem) 1462wlist_add (WL *head, WL elem)
1348{ 1463{
1349 elem->next = *head; 1464 elem->next = *head;
1350 *head = elem; 1465 *head = elem;
1351} 1466}
1352 1467
1353inline void 1468void inline_size
1354wlist_del (WL *head, WL elem) 1469wlist_del (WL *head, WL elem)
1355{ 1470{
1356 while (*head) 1471 while (*head)
1357 { 1472 {
1358 if (*head == elem) 1473 if (*head == elem)
1363 1478
1364 head = &(*head)->next; 1479 head = &(*head)->next;
1365 } 1480 }
1366} 1481}
1367 1482
1368inline void 1483void inline_speed
1369ev_clear_pending (EV_P_ W w) 1484ev_clear_pending (EV_P_ W w)
1370{ 1485{
1371 if (w->pending) 1486 if (w->pending)
1372 { 1487 {
1373 pendings [ABSPRI (w)][w->pending - 1].w = 0; 1488 pendings [ABSPRI (w)][w->pending - 1].w = 0;
1374 w->pending = 0; 1489 w->pending = 0;
1375 } 1490 }
1376} 1491}
1377 1492
1378inline void 1493void inline_speed
1379ev_start (EV_P_ W w, int active) 1494ev_start (EV_P_ W w, int active)
1380{ 1495{
1381 if (w->priority < EV_MINPRI) w->priority = EV_MINPRI; 1496 if (w->priority < EV_MINPRI) w->priority = EV_MINPRI;
1382 if (w->priority > EV_MAXPRI) w->priority = EV_MAXPRI; 1497 if (w->priority > EV_MAXPRI) w->priority = EV_MAXPRI;
1383 1498
1384 w->active = active; 1499 w->active = active;
1385 ev_ref (EV_A); 1500 ev_ref (EV_A);
1386} 1501}
1387 1502
1388inline void 1503void inline_size
1389ev_stop (EV_P_ W w) 1504ev_stop (EV_P_ W w)
1390{ 1505{
1391 ev_unref (EV_A); 1506 ev_unref (EV_A);
1392 w->active = 0; 1507 w->active = 0;
1393} 1508}
1394 1509
1395/*****************************************************************************/ 1510/*****************************************************************************/
1396 1511
1397void 1512void
1398ev_io_start (EV_P_ struct ev_io *w) 1513ev_io_start (EV_P_ ev_io *w)
1399{ 1514{
1400 int fd = w->fd; 1515 int fd = w->fd;
1401 1516
1402 if (expect_false (ev_is_active (w))) 1517 if (expect_false (ev_is_active (w)))
1403 return; 1518 return;
1410 1525
1411 fd_change (EV_A_ fd); 1526 fd_change (EV_A_ fd);
1412} 1527}
1413 1528
1414void 1529void
1415ev_io_stop (EV_P_ struct ev_io *w) 1530ev_io_stop (EV_P_ ev_io *w)
1416{ 1531{
1417 ev_clear_pending (EV_A_ (W)w); 1532 ev_clear_pending (EV_A_ (W)w);
1418 if (expect_false (!ev_is_active (w))) 1533 if (expect_false (!ev_is_active (w)))
1419 return; 1534 return;
1420 1535
1425 1540
1426 fd_change (EV_A_ w->fd); 1541 fd_change (EV_A_ w->fd);
1427} 1542}
1428 1543
1429void 1544void
1430ev_timer_start (EV_P_ struct ev_timer *w) 1545ev_timer_start (EV_P_ ev_timer *w)
1431{ 1546{
1432 if (expect_false (ev_is_active (w))) 1547 if (expect_false (ev_is_active (w)))
1433 return; 1548 return;
1434 1549
1435 ((WT)w)->at += mn_now; 1550 ((WT)w)->at += mn_now;
1436 1551
1437 assert (("ev_timer_start called with negative timer repeat value", w->repeat >= 0.)); 1552 assert (("ev_timer_start called with negative timer repeat value", w->repeat >= 0.));
1438 1553
1439 ev_start (EV_A_ (W)w, ++timercnt); 1554 ev_start (EV_A_ (W)w, ++timercnt);
1440 array_needsize (struct ev_timer *, timers, timermax, timercnt, EMPTY2); 1555 array_needsize (ev_timer *, timers, timermax, timercnt, EMPTY2);
1441 timers [timercnt - 1] = w; 1556 timers [timercnt - 1] = w;
1442 upheap ((WT *)timers, timercnt - 1); 1557 upheap ((WT *)timers, timercnt - 1);
1443 1558
1444 assert (("internal timer heap corruption", timers [((W)w)->active - 1] == w)); 1559 /*assert (("internal timer heap corruption", timers [((W)w)->active - 1] == w));*/
1445} 1560}
1446 1561
1447void 1562void
1448ev_timer_stop (EV_P_ struct ev_timer *w) 1563ev_timer_stop (EV_P_ ev_timer *w)
1449{ 1564{
1450 ev_clear_pending (EV_A_ (W)w); 1565 ev_clear_pending (EV_A_ (W)w);
1451 if (expect_false (!ev_is_active (w))) 1566 if (expect_false (!ev_is_active (w)))
1452 return; 1567 return;
1453 1568
1454 assert (("internal timer heap corruption", timers [((W)w)->active - 1] == w)); 1569 assert (("internal timer heap corruption", timers [((W)w)->active - 1] == w));
1455 1570
1571 {
1572 int active = ((W)w)->active;
1573
1456 if (expect_true (((W)w)->active < timercnt--)) 1574 if (expect_true (--active < --timercnt))
1457 { 1575 {
1458 timers [((W)w)->active - 1] = timers [timercnt]; 1576 timers [active] = timers [timercnt];
1459 adjustheap ((WT *)timers, timercnt, ((W)w)->active - 1); 1577 adjustheap ((WT *)timers, timercnt, active);
1460 } 1578 }
1579 }
1461 1580
1462 ((WT)w)->at -= mn_now; 1581 ((WT)w)->at -= mn_now;
1463 1582
1464 ev_stop (EV_A_ (W)w); 1583 ev_stop (EV_A_ (W)w);
1465} 1584}
1466 1585
1467void 1586void
1468ev_timer_again (EV_P_ struct ev_timer *w) 1587ev_timer_again (EV_P_ ev_timer *w)
1469{ 1588{
1470 if (ev_is_active (w)) 1589 if (ev_is_active (w))
1471 { 1590 {
1472 if (w->repeat) 1591 if (w->repeat)
1473 { 1592 {
1482 w->at = w->repeat; 1601 w->at = w->repeat;
1483 ev_timer_start (EV_A_ w); 1602 ev_timer_start (EV_A_ w);
1484 } 1603 }
1485} 1604}
1486 1605
1487#if EV_PERIODICS 1606#if EV_PERIODIC_ENABLE
1488void 1607void
1489ev_periodic_start (EV_P_ struct ev_periodic *w) 1608ev_periodic_start (EV_P_ ev_periodic *w)
1490{ 1609{
1491 if (expect_false (ev_is_active (w))) 1610 if (expect_false (ev_is_active (w)))
1492 return; 1611 return;
1493 1612
1494 if (w->reschedule_cb) 1613 if (w->reschedule_cb)
1499 /* this formula differs from the one in periodic_reify because we do not always round up */ 1618 /* this formula differs from the one in periodic_reify because we do not always round up */
1500 ((WT)w)->at += ceil ((ev_rt_now - ((WT)w)->at) / w->interval) * w->interval; 1619 ((WT)w)->at += ceil ((ev_rt_now - ((WT)w)->at) / w->interval) * w->interval;
1501 } 1620 }
1502 1621
1503 ev_start (EV_A_ (W)w, ++periodiccnt); 1622 ev_start (EV_A_ (W)w, ++periodiccnt);
1504 array_needsize (struct ev_periodic *, periodics, periodicmax, periodiccnt, EMPTY2); 1623 array_needsize (ev_periodic *, periodics, periodicmax, periodiccnt, EMPTY2);
1505 periodics [periodiccnt - 1] = w; 1624 periodics [periodiccnt - 1] = w;
1506 upheap ((WT *)periodics, periodiccnt - 1); 1625 upheap ((WT *)periodics, periodiccnt - 1);
1507 1626
1508 assert (("internal periodic heap corruption", periodics [((W)w)->active - 1] == w)); 1627 /*assert (("internal periodic heap corruption", periodics [((W)w)->active - 1] == w));*/
1509} 1628}
1510 1629
1511void 1630void
1512ev_periodic_stop (EV_P_ struct ev_periodic *w) 1631ev_periodic_stop (EV_P_ ev_periodic *w)
1513{ 1632{
1514 ev_clear_pending (EV_A_ (W)w); 1633 ev_clear_pending (EV_A_ (W)w);
1515 if (expect_false (!ev_is_active (w))) 1634 if (expect_false (!ev_is_active (w)))
1516 return; 1635 return;
1517 1636
1518 assert (("internal periodic heap corruption", periodics [((W)w)->active - 1] == w)); 1637 assert (("internal periodic heap corruption", periodics [((W)w)->active - 1] == w));
1519 1638
1639 {
1640 int active = ((W)w)->active;
1641
1520 if (expect_true (((W)w)->active < periodiccnt--)) 1642 if (expect_true (--active < --periodiccnt))
1521 { 1643 {
1522 periodics [((W)w)->active - 1] = periodics [periodiccnt]; 1644 periodics [active] = periodics [periodiccnt];
1523 adjustheap ((WT *)periodics, periodiccnt, ((W)w)->active - 1); 1645 adjustheap ((WT *)periodics, periodiccnt, active);
1524 } 1646 }
1647 }
1525 1648
1526 ev_stop (EV_A_ (W)w); 1649 ev_stop (EV_A_ (W)w);
1527} 1650}
1528 1651
1529void 1652void
1530ev_periodic_again (EV_P_ struct ev_periodic *w) 1653ev_periodic_again (EV_P_ ev_periodic *w)
1531{ 1654{
1532 /* TODO: use adjustheap and recalculation */ 1655 /* TODO: use adjustheap and recalculation */
1533 ev_periodic_stop (EV_A_ w); 1656 ev_periodic_stop (EV_A_ w);
1534 ev_periodic_start (EV_A_ w); 1657 ev_periodic_start (EV_A_ w);
1535} 1658}
1536#endif 1659#endif
1537 1660
1538void
1539ev_idle_start (EV_P_ struct ev_idle *w)
1540{
1541 if (expect_false (ev_is_active (w)))
1542 return;
1543
1544 ev_start (EV_A_ (W)w, ++idlecnt);
1545 array_needsize (struct ev_idle *, idles, idlemax, idlecnt, EMPTY2);
1546 idles [idlecnt - 1] = w;
1547}
1548
1549void
1550ev_idle_stop (EV_P_ struct ev_idle *w)
1551{
1552 ev_clear_pending (EV_A_ (W)w);
1553 if (expect_false (!ev_is_active (w)))
1554 return;
1555
1556 idles [((W)w)->active - 1] = idles [--idlecnt];
1557 ev_stop (EV_A_ (W)w);
1558}
1559
1560void
1561ev_prepare_start (EV_P_ struct ev_prepare *w)
1562{
1563 if (expect_false (ev_is_active (w)))
1564 return;
1565
1566 ev_start (EV_A_ (W)w, ++preparecnt);
1567 array_needsize (struct ev_prepare *, prepares, preparemax, preparecnt, EMPTY2);
1568 prepares [preparecnt - 1] = w;
1569}
1570
1571void
1572ev_prepare_stop (EV_P_ struct ev_prepare *w)
1573{
1574 ev_clear_pending (EV_A_ (W)w);
1575 if (expect_false (!ev_is_active (w)))
1576 return;
1577
1578 prepares [((W)w)->active - 1] = prepares [--preparecnt];
1579 ev_stop (EV_A_ (W)w);
1580}
1581
1582void
1583ev_check_start (EV_P_ struct ev_check *w)
1584{
1585 if (expect_false (ev_is_active (w)))
1586 return;
1587
1588 ev_start (EV_A_ (W)w, ++checkcnt);
1589 array_needsize (struct ev_check *, checks, checkmax, checkcnt, EMPTY2);
1590 checks [checkcnt - 1] = w;
1591}
1592
1593void
1594ev_check_stop (EV_P_ struct ev_check *w)
1595{
1596 ev_clear_pending (EV_A_ (W)w);
1597 if (expect_false (!ev_is_active (w)))
1598 return;
1599
1600 checks [((W)w)->active - 1] = checks [--checkcnt];
1601 ev_stop (EV_A_ (W)w);
1602}
1603
1604#ifndef SA_RESTART 1661#ifndef SA_RESTART
1605# define SA_RESTART 0 1662# define SA_RESTART 0
1606#endif 1663#endif
1607 1664
1608void 1665void
1609ev_signal_start (EV_P_ struct ev_signal *w) 1666ev_signal_start (EV_P_ ev_signal *w)
1610{ 1667{
1611#if EV_MULTIPLICITY 1668#if EV_MULTIPLICITY
1612 assert (("signal watchers are only supported in the default loop", loop == ev_default_loop_ptr)); 1669 assert (("signal watchers are only supported in the default loop", loop == ev_default_loop_ptr));
1613#endif 1670#endif
1614 if (expect_false (ev_is_active (w))) 1671 if (expect_false (ev_is_active (w)))
1633#endif 1690#endif
1634 } 1691 }
1635} 1692}
1636 1693
1637void 1694void
1638ev_signal_stop (EV_P_ struct ev_signal *w) 1695ev_signal_stop (EV_P_ ev_signal *w)
1639{ 1696{
1640 ev_clear_pending (EV_A_ (W)w); 1697 ev_clear_pending (EV_A_ (W)w);
1641 if (expect_false (!ev_is_active (w))) 1698 if (expect_false (!ev_is_active (w)))
1642 return; 1699 return;
1643 1700
1647 if (!signals [w->signum - 1].head) 1704 if (!signals [w->signum - 1].head)
1648 signal (w->signum, SIG_DFL); 1705 signal (w->signum, SIG_DFL);
1649} 1706}
1650 1707
1651void 1708void
1652ev_child_start (EV_P_ struct ev_child *w) 1709ev_child_start (EV_P_ ev_child *w)
1653{ 1710{
1654#if EV_MULTIPLICITY 1711#if EV_MULTIPLICITY
1655 assert (("child watchers are only supported in the default loop", loop == ev_default_loop_ptr)); 1712 assert (("child watchers are only supported in the default loop", loop == ev_default_loop_ptr));
1656#endif 1713#endif
1657 if (expect_false (ev_is_active (w))) 1714 if (expect_false (ev_is_active (w)))
1658 return; 1715 return;
1659 1716
1660 ev_start (EV_A_ (W)w, 1); 1717 ev_start (EV_A_ (W)w, 1);
1661 wlist_add ((WL *)&childs [w->pid & (PID_HASHSIZE - 1)], (WL)w); 1718 wlist_add ((WL *)&childs [w->pid & (EV_PID_HASHSIZE - 1)], (WL)w);
1662} 1719}
1663 1720
1664void 1721void
1665ev_child_stop (EV_P_ struct ev_child *w) 1722ev_child_stop (EV_P_ ev_child *w)
1666{ 1723{
1667 ev_clear_pending (EV_A_ (W)w); 1724 ev_clear_pending (EV_A_ (W)w);
1668 if (expect_false (!ev_is_active (w))) 1725 if (expect_false (!ev_is_active (w)))
1669 return; 1726 return;
1670 1727
1671 wlist_del ((WL *)&childs [w->pid & (PID_HASHSIZE - 1)], (WL)w); 1728 wlist_del ((WL *)&childs [w->pid & (EV_PID_HASHSIZE - 1)], (WL)w);
1672 ev_stop (EV_A_ (W)w); 1729 ev_stop (EV_A_ (W)w);
1673} 1730}
1674 1731
1675#if EV_MULTIPLICITY 1732#if EV_STAT_ENABLE
1733
1734# ifdef _WIN32
1735# undef lstat
1736# define lstat(a,b) _stati64 (a,b)
1737# endif
1738
1739#define DEF_STAT_INTERVAL 5.0074891
1740#define MIN_STAT_INTERVAL 0.1074891
1741
1742static void noinline stat_timer_cb (EV_P_ ev_timer *w_, int revents);
1743
1744#if EV_USE_INOTIFY
1745# define EV_INOTIFY_BUFSIZE 8192
1746
1747static void noinline
1748infy_add (EV_P_ ev_stat *w)
1749{
1750 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);
1751
1752 if (w->wd < 0)
1753 {
1754 ev_timer_start (EV_A_ &w->timer); /* this is not race-free, so we still need to recheck periodically */
1755
1756 /* monitor some parent directory for speedup hints */
1757 if ((errno == ENOENT || errno == EACCES) && strlen (w->path) < 4096)
1758 {
1759 char path [4096];
1760 strcpy (path, w->path);
1761
1762 do
1763 {
1764 int mask = IN_MASK_ADD | IN_DELETE_SELF | IN_MOVE_SELF
1765 | (errno == EACCES ? IN_ATTRIB : IN_CREATE | IN_MOVED_TO);
1766
1767 char *pend = strrchr (path, '/');
1768
1769 if (!pend)
1770 break; /* whoops, no '/', complain to your admin */
1771
1772 *pend = 0;
1773 w->wd = inotify_add_watch (fs_fd, path, mask);
1774 }
1775 while (w->wd < 0 && (errno == ENOENT || errno == EACCES));
1776 }
1777 }
1778 else
1779 ev_timer_stop (EV_A_ &w->timer); /* we can watch this in a race-free way */
1780
1781 if (w->wd >= 0)
1782 wlist_add (&fs_hash [w->wd & (EV_INOTIFY_HASHSIZE - 1)].head, (WL)w);
1783}
1784
1785static void noinline
1786infy_del (EV_P_ ev_stat *w)
1787{
1788 int slot;
1789 int wd = w->wd;
1790
1791 if (wd < 0)
1792 return;
1793
1794 w->wd = -2;
1795 slot = wd & (EV_INOTIFY_HASHSIZE - 1);
1796 wlist_del (&fs_hash [slot].head, (WL)w);
1797
1798 /* remove this watcher, if others are watching it, they will rearm */
1799 inotify_rm_watch (fs_fd, wd);
1800}
1801
1802static void noinline
1803infy_wd (EV_P_ int slot, int wd, struct inotify_event *ev)
1804{
1805 if (slot < 0)
1806 /* overflow, need to check for all hahs slots */
1807 for (slot = 0; slot < EV_INOTIFY_HASHSIZE; ++slot)
1808 infy_wd (EV_A_ slot, wd, ev);
1809 else
1810 {
1811 WL w_;
1812
1813 for (w_ = fs_hash [slot & (EV_INOTIFY_HASHSIZE - 1)].head; w_; )
1814 {
1815 ev_stat *w = (ev_stat *)w_;
1816 w_ = w_->next; /* lets us remove this watcher and all before it */
1817
1818 if (w->wd == wd || wd == -1)
1819 {
1820 if (ev->mask & (IN_IGNORED | IN_UNMOUNT | IN_DELETE_SELF))
1821 {
1822 w->wd = -1;
1823 infy_add (EV_A_ w); /* re-add, no matter what */
1824 }
1825
1826 stat_timer_cb (EV_A_ &w->timer, 0);
1827 }
1828 }
1829 }
1830}
1831
1676static void 1832static void
1677embed_cb (EV_P_ struct ev_io *io, int revents) 1833infy_cb (EV_P_ ev_io *w, int revents)
1678{ 1834{
1679 struct ev_embed *w = (struct ev_embed *)(((char *)io) - offsetof (struct ev_embed, io)); 1835 char buf [EV_INOTIFY_BUFSIZE];
1836 struct inotify_event *ev = (struct inotify_event *)buf;
1837 int ofs;
1838 int len = read (fs_fd, buf, sizeof (buf));
1680 1839
1840 for (ofs = 0; ofs < len; ofs += sizeof (struct inotify_event) + ev->len)
1841 infy_wd (EV_A_ ev->wd, ev->wd, ev);
1842}
1843
1844void inline_size
1845infy_init (EV_P)
1846{
1847 if (fs_fd != -2)
1848 return;
1849
1850 fs_fd = inotify_init ();
1851
1852 if (fs_fd >= 0)
1853 {
1854 ev_io_init (&fs_w, infy_cb, fs_fd, EV_READ);
1855 ev_set_priority (&fs_w, EV_MAXPRI);
1856 ev_io_start (EV_A_ &fs_w);
1857 }
1858}
1859
1860void inline_size
1861infy_fork (EV_P)
1862{
1863 int slot;
1864
1865 if (fs_fd < 0)
1866 return;
1867
1868 close (fs_fd);
1869 fs_fd = inotify_init ();
1870
1871 for (slot = 0; slot < EV_INOTIFY_HASHSIZE; ++slot)
1872 {
1873 WL w_ = fs_hash [slot].head;
1874 fs_hash [slot].head = 0;
1875
1876 while (w_)
1877 {
1878 ev_stat *w = (ev_stat *)w_;
1879 w_ = w_->next; /* lets us add this watcher */
1880
1881 w->wd = -1;
1882
1883 if (fs_fd >= 0)
1884 infy_add (EV_A_ w); /* re-add, no matter what */
1885 else
1886 ev_timer_start (EV_A_ &w->timer);
1887 }
1888
1889 }
1890}
1891
1892#endif
1893
1894void
1895ev_stat_stat (EV_P_ ev_stat *w)
1896{
1897 if (lstat (w->path, &w->attr) < 0)
1898 w->attr.st_nlink = 0;
1899 else if (!w->attr.st_nlink)
1900 w->attr.st_nlink = 1;
1901}
1902
1903static void noinline
1904stat_timer_cb (EV_P_ ev_timer *w_, int revents)
1905{
1906 ev_stat *w = (ev_stat *)(((char *)w_) - offsetof (ev_stat, timer));
1907
1908 /* we copy this here each the time so that */
1909 /* prev has the old value when the callback gets invoked */
1910 w->prev = w->attr;
1911 ev_stat_stat (EV_A_ w);
1912
1913 /* memcmp doesn't work on netbsd, they.... do stuff to their struct stat */
1914 if (
1915 w->prev.st_dev != w->attr.st_dev
1916 || w->prev.st_ino != w->attr.st_ino
1917 || w->prev.st_mode != w->attr.st_mode
1918 || w->prev.st_nlink != w->attr.st_nlink
1919 || w->prev.st_uid != w->attr.st_uid
1920 || w->prev.st_gid != w->attr.st_gid
1921 || w->prev.st_rdev != w->attr.st_rdev
1922 || w->prev.st_size != w->attr.st_size
1923 || w->prev.st_atime != w->attr.st_atime
1924 || w->prev.st_mtime != w->attr.st_mtime
1925 || w->prev.st_ctime != w->attr.st_ctime
1926 ) {
1927 #if EV_USE_INOTIFY
1928 infy_del (EV_A_ w);
1929 infy_add (EV_A_ w);
1930 ev_stat_stat (EV_A_ w); /* avoid race... */
1931 #endif
1932
1681 ev_feed_event (EV_A_ (W)w, EV_EMBED); 1933 ev_feed_event (EV_A_ w, EV_STAT);
1934 }
1935}
1936
1937void
1938ev_stat_start (EV_P_ ev_stat *w)
1939{
1940 if (expect_false (ev_is_active (w)))
1941 return;
1942
1943 /* since we use memcmp, we need to clear any padding data etc. */
1944 memset (&w->prev, 0, sizeof (ev_statdata));
1945 memset (&w->attr, 0, sizeof (ev_statdata));
1946
1947 ev_stat_stat (EV_A_ w);
1948
1949 if (w->interval < MIN_STAT_INTERVAL)
1950 w->interval = w->interval ? MIN_STAT_INTERVAL : DEF_STAT_INTERVAL;
1951
1952 ev_timer_init (&w->timer, stat_timer_cb, w->interval, w->interval);
1953 ev_set_priority (&w->timer, ev_priority (w));
1954
1955#if EV_USE_INOTIFY
1956 infy_init (EV_A);
1957
1958 if (fs_fd >= 0)
1959 infy_add (EV_A_ w);
1960 else
1961#endif
1962 ev_timer_start (EV_A_ &w->timer);
1963
1964 ev_start (EV_A_ (W)w, 1);
1965}
1966
1967void
1968ev_stat_stop (EV_P_ ev_stat *w)
1969{
1970 ev_clear_pending (EV_A_ (W)w);
1971 if (expect_false (!ev_is_active (w)))
1972 return;
1973
1974#if EV_USE_INOTIFY
1975 infy_del (EV_A_ w);
1976#endif
1977 ev_timer_stop (EV_A_ &w->timer);
1978
1979 ev_stop (EV_A_ (W)w);
1980}
1981#endif
1982
1983void
1984ev_idle_start (EV_P_ ev_idle *w)
1985{
1986 if (expect_false (ev_is_active (w)))
1987 return;
1988
1989 ev_start (EV_A_ (W)w, ++idlecnt);
1990 array_needsize (ev_idle *, idles, idlemax, idlecnt, EMPTY2);
1991 idles [idlecnt - 1] = w;
1992}
1993
1994void
1995ev_idle_stop (EV_P_ ev_idle *w)
1996{
1997 ev_clear_pending (EV_A_ (W)w);
1998 if (expect_false (!ev_is_active (w)))
1999 return;
2000
2001 {
2002 int active = ((W)w)->active;
2003 idles [active - 1] = idles [--idlecnt];
2004 ((W)idles [active - 1])->active = active;
2005 }
2006
2007 ev_stop (EV_A_ (W)w);
2008}
2009
2010void
2011ev_prepare_start (EV_P_ ev_prepare *w)
2012{
2013 if (expect_false (ev_is_active (w)))
2014 return;
2015
2016 ev_start (EV_A_ (W)w, ++preparecnt);
2017 array_needsize (ev_prepare *, prepares, preparemax, preparecnt, EMPTY2);
2018 prepares [preparecnt - 1] = w;
2019}
2020
2021void
2022ev_prepare_stop (EV_P_ ev_prepare *w)
2023{
2024 ev_clear_pending (EV_A_ (W)w);
2025 if (expect_false (!ev_is_active (w)))
2026 return;
2027
2028 {
2029 int active = ((W)w)->active;
2030 prepares [active - 1] = prepares [--preparecnt];
2031 ((W)prepares [active - 1])->active = active;
2032 }
2033
2034 ev_stop (EV_A_ (W)w);
2035}
2036
2037void
2038ev_check_start (EV_P_ ev_check *w)
2039{
2040 if (expect_false (ev_is_active (w)))
2041 return;
2042
2043 ev_start (EV_A_ (W)w, ++checkcnt);
2044 array_needsize (ev_check *, checks, checkmax, checkcnt, EMPTY2);
2045 checks [checkcnt - 1] = w;
2046}
2047
2048void
2049ev_check_stop (EV_P_ ev_check *w)
2050{
2051 ev_clear_pending (EV_A_ (W)w);
2052 if (expect_false (!ev_is_active (w)))
2053 return;
2054
2055 {
2056 int active = ((W)w)->active;
2057 checks [active - 1] = checks [--checkcnt];
2058 ((W)checks [active - 1])->active = active;
2059 }
2060
2061 ev_stop (EV_A_ (W)w);
2062}
2063
2064#if EV_EMBED_ENABLE
2065void noinline
2066ev_embed_sweep (EV_P_ ev_embed *w)
2067{
1682 ev_loop (w->loop, EVLOOP_NONBLOCK); 2068 ev_loop (w->loop, EVLOOP_NONBLOCK);
1683} 2069}
1684 2070
2071static void
2072embed_cb (EV_P_ ev_io *io, int revents)
2073{
2074 ev_embed *w = (ev_embed *)(((char *)io) - offsetof (ev_embed, io));
2075
2076 if (ev_cb (w))
2077 ev_feed_event (EV_A_ (W)w, EV_EMBED);
2078 else
2079 ev_embed_sweep (loop, w);
2080}
2081
1685void 2082void
1686ev_embed_start (EV_P_ struct ev_embed *w) 2083ev_embed_start (EV_P_ ev_embed *w)
1687{ 2084{
1688 if (expect_false (ev_is_active (w))) 2085 if (expect_false (ev_is_active (w)))
1689 return; 2086 return;
1690 2087
1691 { 2088 {
1692 struct ev_loop *loop = w->loop; 2089 struct ev_loop *loop = w->loop;
1693 assert (("loop to be embedded is not embeddable", backend & ev_embeddable_backends ())); 2090 assert (("loop to be embedded is not embeddable", backend & ev_embeddable_backends ()));
1694 ev_io_init (&w->io, embed_cb, backend_fd, EV_READ); 2091 ev_io_init (&w->io, embed_cb, backend_fd, EV_READ);
1695 } 2092 }
1696 2093
2094 ev_set_priority (&w->io, ev_priority (w));
1697 ev_io_start (EV_A_ &w->io); 2095 ev_io_start (EV_A_ &w->io);
2096
1698 ev_start (EV_A_ (W)w, 1); 2097 ev_start (EV_A_ (W)w, 1);
1699} 2098}
1700 2099
1701void 2100void
1702ev_embed_stop (EV_P_ struct ev_embed *w) 2101ev_embed_stop (EV_P_ ev_embed *w)
1703{ 2102{
1704 ev_clear_pending (EV_A_ (W)w); 2103 ev_clear_pending (EV_A_ (W)w);
1705 if (expect_false (!ev_is_active (w))) 2104 if (expect_false (!ev_is_active (w)))
1706 return; 2105 return;
1707 2106
1708 ev_io_stop (EV_A_ &w->io); 2107 ev_io_stop (EV_A_ &w->io);
2108
1709 ev_stop (EV_A_ (W)w); 2109 ev_stop (EV_A_ (W)w);
1710} 2110}
1711#endif 2111#endif
1712 2112
2113#if EV_FORK_ENABLE
2114void
2115ev_fork_start (EV_P_ ev_fork *w)
2116{
2117 if (expect_false (ev_is_active (w)))
2118 return;
2119
2120 ev_start (EV_A_ (W)w, ++forkcnt);
2121 array_needsize (ev_fork *, forks, forkmax, forkcnt, EMPTY2);
2122 forks [forkcnt - 1] = w;
2123}
2124
2125void
2126ev_fork_stop (EV_P_ ev_fork *w)
2127{
2128 ev_clear_pending (EV_A_ (W)w);
2129 if (expect_false (!ev_is_active (w)))
2130 return;
2131
2132 {
2133 int active = ((W)w)->active;
2134 forks [active - 1] = forks [--forkcnt];
2135 ((W)forks [active - 1])->active = active;
2136 }
2137
2138 ev_stop (EV_A_ (W)w);
2139}
2140#endif
2141
1713/*****************************************************************************/ 2142/*****************************************************************************/
1714 2143
1715struct ev_once 2144struct ev_once
1716{ 2145{
1717 struct ev_io io; 2146 ev_io io;
1718 struct ev_timer to; 2147 ev_timer to;
1719 void (*cb)(int revents, void *arg); 2148 void (*cb)(int revents, void *arg);
1720 void *arg; 2149 void *arg;
1721}; 2150};
1722 2151
1723static void 2152static void
1732 2161
1733 cb (revents, arg); 2162 cb (revents, arg);
1734} 2163}
1735 2164
1736static void 2165static void
1737once_cb_io (EV_P_ struct ev_io *w, int revents) 2166once_cb_io (EV_P_ ev_io *w, int revents)
1738{ 2167{
1739 once_cb (EV_A_ (struct ev_once *)(((char *)w) - offsetof (struct ev_once, io)), revents); 2168 once_cb (EV_A_ (struct ev_once *)(((char *)w) - offsetof (struct ev_once, io)), revents);
1740} 2169}
1741 2170
1742static void 2171static void
1743once_cb_to (EV_P_ struct ev_timer *w, int revents) 2172once_cb_to (EV_P_ ev_timer *w, int revents)
1744{ 2173{
1745 once_cb (EV_A_ (struct ev_once *)(((char *)w) - offsetof (struct ev_once, to)), revents); 2174 once_cb (EV_A_ (struct ev_once *)(((char *)w) - offsetof (struct ev_once, to)), revents);
1746} 2175}
1747 2176
1748void 2177void

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