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Comparing libev/ev.c (file contents):
Revision 1.128 by root, Thu Nov 22 12:28:27 2007 UTC vs.
Revision 1.157 by root, Wed Nov 28 20:58:32 2007 UTC

32#ifdef __cplusplus 32#ifdef __cplusplus
33extern "C" { 33extern "C" {
34#endif 34#endif
35 35
36#ifndef EV_STANDALONE 36#ifndef EV_STANDALONE
37# ifdef EV_CONFIG_H
38# include EV_CONFIG_H
39# else
37# include "config.h" 40# include "config.h"
41# endif
38 42
39# if HAVE_CLOCK_GETTIME 43# if HAVE_CLOCK_GETTIME
40# ifndef EV_USE_MONOTONIC 44# ifndef EV_USE_MONOTONIC
41# define EV_USE_MONOTONIC 1 45# define EV_USE_MONOTONIC 1
42# endif 46# endif
90# else 94# else
91# define EV_USE_PORT 0 95# define EV_USE_PORT 0
92# endif 96# endif
93# endif 97# endif
94 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
95#endif 107#endif
96 108
97#include <math.h> 109#include <math.h>
98#include <stdlib.h> 110#include <stdlib.h>
99#include <fcntl.h> 111#include <fcntl.h>
106#include <sys/types.h> 118#include <sys/types.h>
107#include <time.h> 119#include <time.h>
108 120
109#include <signal.h> 121#include <signal.h>
110 122
123#ifdef EV_H
124# include EV_H
125#else
126# include "ev.h"
127#endif
128
111#ifndef _WIN32 129#ifndef _WIN32
112# include <unistd.h>
113# include <sys/time.h> 130# include <sys/time.h>
114# include <sys/wait.h> 131# include <sys/wait.h>
132# include <unistd.h>
115#else 133#else
116# define WIN32_LEAN_AND_MEAN 134# define WIN32_LEAN_AND_MEAN
117# include <windows.h> 135# include <windows.h>
118# ifndef EV_SELECT_IS_WINSOCKET 136# ifndef EV_SELECT_IS_WINSOCKET
119# define EV_SELECT_IS_WINSOCKET 1 137# define EV_SELECT_IS_WINSOCKET 1
152 170
153#ifndef EV_USE_PORT 171#ifndef EV_USE_PORT
154# define EV_USE_PORT 0 172# define EV_USE_PORT 0
155#endif 173#endif
156 174
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
157/**/ 195/**/
158
159/* darwin simply cannot be helped */
160#ifdef __APPLE__
161# undef EV_USE_POLL
162# undef EV_USE_KQUEUE
163#endif
164 196
165#ifndef CLOCK_MONOTONIC 197#ifndef CLOCK_MONOTONIC
166# undef EV_USE_MONOTONIC 198# undef EV_USE_MONOTONIC
167# define EV_USE_MONOTONIC 0 199# define EV_USE_MONOTONIC 0
168#endif 200#endif
174 206
175#if EV_SELECT_IS_WINSOCKET 207#if EV_SELECT_IS_WINSOCKET
176# include <winsock.h> 208# include <winsock.h>
177#endif 209#endif
178 210
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
179/**/ 219/**/
180 220
181#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) */
182#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) */
183#define PID_HASHSIZE 16 /* size of pid hash table, must be power of two */
184/*#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 */
185
186#ifdef EV_H
187# include EV_H
188#else
189# include "ev.h"
190#endif
191 224
192#if __GNUC__ >= 3 225#if __GNUC__ >= 3
193# 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
194# define inline static inline 233# define inline_speed static inline
234# endif
195#else 235#else
196# define expect(expr,value) (expr) 236# define expect(expr,value) (expr)
237# define inline_speed static
197# define inline static 238# define inline_size static
239# define noinline
198#endif 240#endif
199 241
200#define expect_false(expr) expect ((expr) != 0, 0) 242#define expect_false(expr) expect ((expr) != 0, 0)
201#define expect_true(expr) expect ((expr) != 0, 1) 243#define expect_true(expr) expect ((expr) != 0, 1)
202 244
204#define ABSPRI(w) ((w)->priority - EV_MINPRI) 246#define ABSPRI(w) ((w)->priority - EV_MINPRI)
205 247
206#define EMPTY0 /* required for microsofts broken pseudo-c compiler */ 248#define EMPTY0 /* required for microsofts broken pseudo-c compiler */
207#define EMPTY2(a,b) /* used to suppress some warnings */ 249#define EMPTY2(a,b) /* used to suppress some warnings */
208 250
209typedef struct ev_watcher *W; 251typedef ev_watcher *W;
210typedef struct ev_watcher_list *WL; 252typedef ev_watcher_list *WL;
211typedef struct ev_watcher_time *WT; 253typedef ev_watcher_time *WT;
212 254
213static int have_monotonic; /* did clock_gettime (CLOCK_MONOTONIC) work? */ 255static int have_monotonic; /* did clock_gettime (CLOCK_MONOTONIC) work? */
214 256
215#ifdef _WIN32 257#ifdef _WIN32
216# include "ev_win32.c" 258# include "ev_win32.c"
218 260
219/*****************************************************************************/ 261/*****************************************************************************/
220 262
221static void (*syserr_cb)(const char *msg); 263static void (*syserr_cb)(const char *msg);
222 264
265void
223void ev_set_syserr_cb (void (*cb)(const char *msg)) 266ev_set_syserr_cb (void (*cb)(const char *msg))
224{ 267{
225 syserr_cb = cb; 268 syserr_cb = cb;
226} 269}
227 270
228static void 271static void noinline
229syserr (const char *msg) 272syserr (const char *msg)
230{ 273{
231 if (!msg) 274 if (!msg)
232 msg = "(libev) system error"; 275 msg = "(libev) system error";
233 276
240 } 283 }
241} 284}
242 285
243static void *(*alloc)(void *ptr, long size); 286static void *(*alloc)(void *ptr, long size);
244 287
288void
245void ev_set_allocator (void *(*cb)(void *ptr, long size)) 289ev_set_allocator (void *(*cb)(void *ptr, long size))
246{ 290{
247 alloc = cb; 291 alloc = cb;
248} 292}
249 293
250static void * 294inline_speed void *
251ev_realloc (void *ptr, long size) 295ev_realloc (void *ptr, long size)
252{ 296{
253 ptr = alloc ? alloc (ptr, size) : realloc (ptr, size); 297 ptr = alloc ? alloc (ptr, size) : realloc (ptr, size);
254 298
255 if (!ptr && size) 299 if (!ptr && size)
279typedef struct 323typedef struct
280{ 324{
281 W w; 325 W w;
282 int events; 326 int events;
283} ANPENDING; 327} ANPENDING;
328
329#if EV_USE_INOTIFY
330typedef struct
331{
332 WL head;
333} ANFS;
334#endif
284 335
285#if EV_MULTIPLICITY 336#if EV_MULTIPLICITY
286 337
287 struct ev_loop 338 struct ev_loop
288 { 339 {
322 gettimeofday (&tv, 0); 373 gettimeofday (&tv, 0);
323 return tv.tv_sec + tv.tv_usec * 1e-6; 374 return tv.tv_sec + tv.tv_usec * 1e-6;
324#endif 375#endif
325} 376}
326 377
327inline ev_tstamp 378ev_tstamp inline_size
328get_clock (void) 379get_clock (void)
329{ 380{
330#if EV_USE_MONOTONIC 381#if EV_USE_MONOTONIC
331 if (expect_true (have_monotonic)) 382 if (expect_true (have_monotonic))
332 { 383 {
375#define array_free(stem, idx) \ 426#define array_free(stem, idx) \
376 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;
377 428
378/*****************************************************************************/ 429/*****************************************************************************/
379 430
380static void 431void noinline
381anfds_init (ANFD *base, int count)
382{
383 while (count--)
384 {
385 base->head = 0;
386 base->events = EV_NONE;
387 base->reify = 0;
388
389 ++base;
390 }
391}
392
393void
394ev_feed_event (EV_P_ void *w, int revents) 432ev_feed_event (EV_P_ void *w, int revents)
395{ 433{
396 W w_ = (W)w; 434 W w_ = (W)w;
397 435
398 if (expect_false (w_->pending)) 436 if (expect_false (w_->pending))
405 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);
406 pendings [ABSPRI (w_)][w_->pending - 1].w = w_; 444 pendings [ABSPRI (w_)][w_->pending - 1].w = w_;
407 pendings [ABSPRI (w_)][w_->pending - 1].events = revents; 445 pendings [ABSPRI (w_)][w_->pending - 1].events = revents;
408} 446}
409 447
410static void 448void inline_size
411queue_events (EV_P_ W *events, int eventcnt, int type) 449queue_events (EV_P_ W *events, int eventcnt, int type)
412{ 450{
413 int i; 451 int i;
414 452
415 for (i = 0; i < eventcnt; ++i) 453 for (i = 0; i < eventcnt; ++i)
416 ev_feed_event (EV_A_ events [i], type); 454 ev_feed_event (EV_A_ events [i], type);
417} 455}
418 456
419inline 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
420fd_event (EV_P_ int fd, int revents) 473fd_event (EV_P_ int fd, int revents)
421{ 474{
422 ANFD *anfd = anfds + fd; 475 ANFD *anfd = anfds + fd;
423 struct ev_io *w; 476 ev_io *w;
424 477
425 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)
426 { 479 {
427 int ev = w->events & revents; 480 int ev = w->events & revents;
428 481
429 if (ev) 482 if (ev)
430 ev_feed_event (EV_A_ (W)w, ev); 483 ev_feed_event (EV_A_ (W)w, ev);
435ev_feed_fd_event (EV_P_ int fd, int revents) 488ev_feed_fd_event (EV_P_ int fd, int revents)
436{ 489{
437 fd_event (EV_A_ fd, revents); 490 fd_event (EV_A_ fd, revents);
438} 491}
439 492
440/*****************************************************************************/ 493void inline_size
441
442inline void
443fd_reify (EV_P) 494fd_reify (EV_P)
444{ 495{
445 int i; 496 int i;
446 497
447 for (i = 0; i < fdchangecnt; ++i) 498 for (i = 0; i < fdchangecnt; ++i)
448 { 499 {
449 int fd = fdchanges [i]; 500 int fd = fdchanges [i];
450 ANFD *anfd = anfds + fd; 501 ANFD *anfd = anfds + fd;
451 struct ev_io *w; 502 ev_io *w;
452 503
453 int events = 0; 504 int events = 0;
454 505
455 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)
456 events |= w->events; 507 events |= w->events;
457 508
458#if EV_SELECT_IS_WINSOCKET 509#if EV_SELECT_IS_WINSOCKET
459 if (events) 510 if (events)
460 { 511 {
464 } 515 }
465#endif 516#endif
466 517
467 anfd->reify = 0; 518 anfd->reify = 0;
468 519
469 method_modify (EV_A_ fd, anfd->events, events); 520 backend_modify (EV_A_ fd, anfd->events, events);
470 anfd->events = events; 521 anfd->events = events;
471 } 522 }
472 523
473 fdchangecnt = 0; 524 fdchangecnt = 0;
474} 525}
475 526
476static void 527void inline_size
477fd_change (EV_P_ int fd) 528fd_change (EV_P_ int fd)
478{ 529{
479 if (expect_false (anfds [fd].reify)) 530 if (expect_false (anfds [fd].reify))
480 return; 531 return;
481 532
484 ++fdchangecnt; 535 ++fdchangecnt;
485 array_needsize (int, fdchanges, fdchangemax, fdchangecnt, EMPTY2); 536 array_needsize (int, fdchanges, fdchangemax, fdchangecnt, EMPTY2);
486 fdchanges [fdchangecnt - 1] = fd; 537 fdchanges [fdchangecnt - 1] = fd;
487} 538}
488 539
489static void 540void inline_speed
490fd_kill (EV_P_ int fd) 541fd_kill (EV_P_ int fd)
491{ 542{
492 struct ev_io *w; 543 ev_io *w;
493 544
494 while ((w = (struct ev_io *)anfds [fd].head)) 545 while ((w = (ev_io *)anfds [fd].head))
495 { 546 {
496 ev_io_stop (EV_A_ w); 547 ev_io_stop (EV_A_ w);
497 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);
498 } 549 }
499} 550}
500 551
501inline int 552int inline_size
502fd_valid (int fd) 553fd_valid (int fd)
503{ 554{
504#ifdef _WIN32 555#ifdef _WIN32
505 return _get_osfhandle (fd) != -1; 556 return _get_osfhandle (fd) != -1;
506#else 557#else
507 return fcntl (fd, F_GETFD) != -1; 558 return fcntl (fd, F_GETFD) != -1;
508#endif 559#endif
509} 560}
510 561
511/* called on EBADF to verify fds */ 562/* called on EBADF to verify fds */
512static void 563static void noinline
513fd_ebadf (EV_P) 564fd_ebadf (EV_P)
514{ 565{
515 int fd; 566 int fd;
516 567
517 for (fd = 0; fd < anfdmax; ++fd) 568 for (fd = 0; fd < anfdmax; ++fd)
519 if (!fd_valid (fd) == -1 && errno == EBADF) 570 if (!fd_valid (fd) == -1 && errno == EBADF)
520 fd_kill (EV_A_ fd); 571 fd_kill (EV_A_ fd);
521} 572}
522 573
523/* 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 */
524static void 575static void noinline
525fd_enomem (EV_P) 576fd_enomem (EV_P)
526{ 577{
527 int fd; 578 int fd;
528 579
529 for (fd = anfdmax; fd--; ) 580 for (fd = anfdmax; fd--; )
532 fd_kill (EV_A_ fd); 583 fd_kill (EV_A_ fd);
533 return; 584 return;
534 } 585 }
535} 586}
536 587
537/* usually called after fork if method needs to re-arm all fds from scratch */ 588/* usually called after fork if backend needs to re-arm all fds from scratch */
538static void 589static void noinline
539fd_rearm_all (EV_P) 590fd_rearm_all (EV_P)
540{ 591{
541 int fd; 592 int fd;
542 593
543 /* this should be highly optimised to not do anything but set a flag */
544 for (fd = 0; fd < anfdmax; ++fd) 594 for (fd = 0; fd < anfdmax; ++fd)
545 if (anfds [fd].events) 595 if (anfds [fd].events)
546 { 596 {
547 anfds [fd].events = 0; 597 anfds [fd].events = 0;
548 fd_change (EV_A_ fd); 598 fd_change (EV_A_ fd);
549 } 599 }
550} 600}
551 601
552/*****************************************************************************/ 602/*****************************************************************************/
553 603
554static void 604void inline_speed
555upheap (WT *heap, int k) 605upheap (WT *heap, int k)
556{ 606{
557 WT w = heap [k]; 607 WT w = heap [k];
558 608
559 while (k && heap [k >> 1]->at > w->at) 609 while (k && heap [k >> 1]->at > w->at)
566 heap [k] = w; 616 heap [k] = w;
567 ((W)heap [k])->active = k + 1; 617 ((W)heap [k])->active = k + 1;
568 618
569} 619}
570 620
571static void 621void inline_speed
572downheap (WT *heap, int N, int k) 622downheap (WT *heap, int N, int k)
573{ 623{
574 WT w = heap [k]; 624 WT w = heap [k];
575 625
576 while (k < (N >> 1)) 626 while (k < (N >> 1))
590 640
591 heap [k] = w; 641 heap [k] = w;
592 ((W)heap [k])->active = k + 1; 642 ((W)heap [k])->active = k + 1;
593} 643}
594 644
595inline void 645void inline_size
596adjustheap (WT *heap, int N, int k) 646adjustheap (WT *heap, int N, int k)
597{ 647{
598 upheap (heap, k); 648 upheap (heap, k);
599 downheap (heap, N, k); 649 downheap (heap, N, k);
600} 650}
610static ANSIG *signals; 660static ANSIG *signals;
611static int signalmax; 661static int signalmax;
612 662
613static int sigpipe [2]; 663static int sigpipe [2];
614static sig_atomic_t volatile gotsig; 664static sig_atomic_t volatile gotsig;
615static struct ev_io sigev; 665static ev_io sigev;
616 666
617static void 667void inline_size
618signals_init (ANSIG *base, int count) 668signals_init (ANSIG *base, int count)
619{ 669{
620 while (count--) 670 while (count--)
621 { 671 {
622 base->head = 0; 672 base->head = 0;
642 write (sigpipe [1], &signum, 1); 692 write (sigpipe [1], &signum, 1);
643 errno = old_errno; 693 errno = old_errno;
644 } 694 }
645} 695}
646 696
647void 697void noinline
648ev_feed_signal_event (EV_P_ int signum) 698ev_feed_signal_event (EV_P_ int signum)
649{ 699{
650 WL w; 700 WL w;
651 701
652#if EV_MULTIPLICITY 702#if EV_MULTIPLICITY
663 for (w = signals [signum].head; w; w = w->next) 713 for (w = signals [signum].head; w; w = w->next)
664 ev_feed_event (EV_A_ (W)w, EV_SIGNAL); 714 ev_feed_event (EV_A_ (W)w, EV_SIGNAL);
665} 715}
666 716
667static void 717static void
668sigcb (EV_P_ struct ev_io *iow, int revents) 718sigcb (EV_P_ ev_io *iow, int revents)
669{ 719{
670 int signum; 720 int signum;
671 721
672 read (sigpipe [0], &revents, 1); 722 read (sigpipe [0], &revents, 1);
673 gotsig = 0; 723 gotsig = 0;
675 for (signum = signalmax; signum--; ) 725 for (signum = signalmax; signum--; )
676 if (signals [signum].gotsig) 726 if (signals [signum].gotsig)
677 ev_feed_signal_event (EV_A_ signum + 1); 727 ev_feed_signal_event (EV_A_ signum + 1);
678} 728}
679 729
680static void 730void inline_size
681fd_intern (int fd) 731fd_intern (int fd)
682{ 732{
683#ifdef _WIN32 733#ifdef _WIN32
684 int arg = 1; 734 int arg = 1;
685 ioctlsocket (_get_osfhandle (fd), FIONBIO, &arg); 735 ioctlsocket (_get_osfhandle (fd), FIONBIO, &arg);
687 fcntl (fd, F_SETFD, FD_CLOEXEC); 737 fcntl (fd, F_SETFD, FD_CLOEXEC);
688 fcntl (fd, F_SETFL, O_NONBLOCK); 738 fcntl (fd, F_SETFL, O_NONBLOCK);
689#endif 739#endif
690} 740}
691 741
692static void 742static void noinline
693siginit (EV_P) 743siginit (EV_P)
694{ 744{
695 fd_intern (sigpipe [0]); 745 fd_intern (sigpipe [0]);
696 fd_intern (sigpipe [1]); 746 fd_intern (sigpipe [1]);
697 747
700 ev_unref (EV_A); /* child watcher should not keep loop alive */ 750 ev_unref (EV_A); /* child watcher should not keep loop alive */
701} 751}
702 752
703/*****************************************************************************/ 753/*****************************************************************************/
704 754
705static struct ev_child *childs [PID_HASHSIZE]; 755static ev_child *childs [EV_PID_HASHSIZE];
706 756
707#ifndef _WIN32 757#ifndef _WIN32
708 758
709static struct ev_signal childev; 759static ev_signal childev;
710 760
711#ifndef WCONTINUED 761void inline_speed
712# define WCONTINUED 0
713#endif
714
715static void
716child_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)
717{ 763{
718 struct ev_child *w; 764 ev_child *w;
719 765
720 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)
721 if (w->pid == pid || !w->pid) 767 if (w->pid == pid || !w->pid)
722 { 768 {
723 ev_priority (w) = ev_priority (sw); /* need to do it *now* */ 769 ev_priority (w) = ev_priority (sw); /* need to do it *now* */
724 w->rpid = pid; 770 w->rpid = pid;
725 w->rstatus = status; 771 w->rstatus = status;
726 ev_feed_event (EV_A_ (W)w, EV_CHILD); 772 ev_feed_event (EV_A_ (W)w, EV_CHILD);
727 } 773 }
728} 774}
729 775
776#ifndef WCONTINUED
777# define WCONTINUED 0
778#endif
779
730static void 780static void
731childcb (EV_P_ struct ev_signal *sw, int revents) 781childcb (EV_P_ ev_signal *sw, int revents)
732{ 782{
733 int pid, status; 783 int pid, status;
734 784
785 /* some systems define WCONTINUED but then fail to support it (linux 2.4) */
735 if (0 < (pid = waitpid (-1, &status, WNOHANG | WUNTRACED | WCONTINUED))) 786 if (0 >= (pid = waitpid (-1, &status, WNOHANG | WUNTRACED | WCONTINUED)))
736 { 787 if (!WCONTINUED
788 || errno != EINVAL
789 || 0 >= (pid = waitpid (-1, &status, WNOHANG | WUNTRACED)))
790 return;
791
737 /* 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 */
793 /* we need to do it this way so that the callback gets called before we continue */
738 ev_feed_event (EV_A_ (W)sw, EV_SIGNAL); 794 ev_feed_event (EV_A_ (W)sw, EV_SIGNAL);
739 795
740 child_reap (EV_A_ sw, pid, pid, status); 796 child_reap (EV_A_ sw, pid, pid, status);
797 if (EV_PID_HASHSIZE > 1)
741 child_reap (EV_A_ sw, 0, pid, status); /* this might trigger a watcher twice, but event catches that */ 798 child_reap (EV_A_ sw, 0, pid, status); /* this might trigger a watcher twice, but feed_event catches that */
742 }
743} 799}
744 800
745#endif 801#endif
746 802
747/*****************************************************************************/ 803/*****************************************************************************/
773{ 829{
774 return EV_VERSION_MINOR; 830 return EV_VERSION_MINOR;
775} 831}
776 832
777/* 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 */
778static int 834int inline_size
779enable_secure (void) 835enable_secure (void)
780{ 836{
781#ifdef _WIN32 837#ifdef _WIN32
782 return 0; 838 return 0;
783#else 839#else
785 || getgid () != getegid (); 841 || getgid () != getegid ();
786#endif 842#endif
787} 843}
788 844
789unsigned int 845unsigned int
790ev_method (EV_P) 846ev_supported_backends (void)
791{ 847{
792 return method; 848 unsigned int flags = 0;
793}
794 849
795static void 850 if (EV_USE_PORT ) flags |= EVBACKEND_PORT;
851 if (EV_USE_KQUEUE) flags |= EVBACKEND_KQUEUE;
852 if (EV_USE_EPOLL ) flags |= EVBACKEND_EPOLL;
853 if (EV_USE_POLL ) flags |= EVBACKEND_POLL;
854 if (EV_USE_SELECT) flags |= EVBACKEND_SELECT;
855
856 return flags;
857}
858
859unsigned int
860ev_recommended_backends (void)
861{
862 unsigned int flags = ev_supported_backends ();
863
864#ifndef __NetBSD__
865 /* kqueue is borked on everything but netbsd apparently */
866 /* it usually doesn't work correctly on anything but sockets and pipes */
867 flags &= ~EVBACKEND_KQUEUE;
868#endif
869#ifdef __APPLE__
870 // flags &= ~EVBACKEND_KQUEUE; for documentation
871 flags &= ~EVBACKEND_POLL;
872#endif
873
874 return flags;
875}
876
877unsigned int
878ev_embeddable_backends (void)
879{
880 return EVBACKEND_EPOLL
881 | EVBACKEND_KQUEUE
882 | EVBACKEND_PORT;
883}
884
885unsigned int
886ev_backend (EV_P)
887{
888 return backend;
889}
890
891static void noinline
796loop_init (EV_P_ unsigned int flags) 892loop_init (EV_P_ unsigned int flags)
797{ 893{
798 if (!method) 894 if (!backend)
799 { 895 {
800#if EV_USE_MONOTONIC 896#if EV_USE_MONOTONIC
801 { 897 {
802 struct timespec ts; 898 struct timespec ts;
803 if (!clock_gettime (CLOCK_MONOTONIC, &ts)) 899 if (!clock_gettime (CLOCK_MONOTONIC, &ts))
813 if (!(flags & EVFLAG_NOENV) 909 if (!(flags & EVFLAG_NOENV)
814 && !enable_secure () 910 && !enable_secure ()
815 && getenv ("LIBEV_FLAGS")) 911 && getenv ("LIBEV_FLAGS"))
816 flags = atoi (getenv ("LIBEV_FLAGS")); 912 flags = atoi (getenv ("LIBEV_FLAGS"));
817 913
818 if (!(flags & EVMETHOD_ALL)) 914 if (!(flags & 0x0000ffffUL))
819 { 915 flags |= ev_recommended_backends ();
820 flags |= EVMETHOD_ALL;
821#if EV_USE_KQUEUE && !defined (__NetBSD__)
822 /* kqueue is borked on everything but netbsd apparently */
823 /* it usually doesn't work correctly on anything but sockets and pipes */
824 flags &= ~EVMETHOD_KQUEUE;
825#endif
826 }
827 916
828 method = 0; 917 backend = 0;
918 backend_fd = -1;
919#if EV_USE_INOTIFY
920 fs_fd = -2;
921#endif
922
829#if EV_USE_PORT 923#if EV_USE_PORT
830 if (!method && (flags & EVMETHOD_PORT )) method = port_init (EV_A_ flags); 924 if (!backend && (flags & EVBACKEND_PORT )) backend = port_init (EV_A_ flags);
831#endif 925#endif
832#if EV_USE_KQUEUE 926#if EV_USE_KQUEUE
833 if (!method && (flags & EVMETHOD_KQUEUE)) method = kqueue_init (EV_A_ flags); 927 if (!backend && (flags & EVBACKEND_KQUEUE)) backend = kqueue_init (EV_A_ flags);
834#endif 928#endif
835#if EV_USE_EPOLL 929#if EV_USE_EPOLL
836 if (!method && (flags & EVMETHOD_EPOLL )) method = epoll_init (EV_A_ flags); 930 if (!backend && (flags & EVBACKEND_EPOLL )) backend = epoll_init (EV_A_ flags);
837#endif 931#endif
838#if EV_USE_POLL 932#if EV_USE_POLL
839 if (!method && (flags & EVMETHOD_POLL )) method = poll_init (EV_A_ flags); 933 if (!backend && (flags & EVBACKEND_POLL )) backend = poll_init (EV_A_ flags);
840#endif 934#endif
841#if EV_USE_SELECT 935#if EV_USE_SELECT
842 if (!method && (flags & EVMETHOD_SELECT)) method = select_init (EV_A_ flags); 936 if (!backend && (flags & EVBACKEND_SELECT)) backend = select_init (EV_A_ flags);
843#endif 937#endif
844 938
845 ev_init (&sigev, sigcb); 939 ev_init (&sigev, sigcb);
846 ev_set_priority (&sigev, EV_MAXPRI); 940 ev_set_priority (&sigev, EV_MAXPRI);
847 } 941 }
848} 942}
849 943
850static void 944static void noinline
851loop_destroy (EV_P) 945loop_destroy (EV_P)
852{ 946{
853 int i; 947 int i;
854 948
949#if EV_USE_INOTIFY
950 if (fs_fd >= 0)
951 close (fs_fd);
952#endif
953
954 if (backend_fd >= 0)
955 close (backend_fd);
956
855#if EV_USE_PORT 957#if EV_USE_PORT
856 if (method == EVMETHOD_PORT ) port_destroy (EV_A); 958 if (backend == EVBACKEND_PORT ) port_destroy (EV_A);
857#endif 959#endif
858#if EV_USE_KQUEUE 960#if EV_USE_KQUEUE
859 if (method == EVMETHOD_KQUEUE) kqueue_destroy (EV_A); 961 if (backend == EVBACKEND_KQUEUE) kqueue_destroy (EV_A);
860#endif 962#endif
861#if EV_USE_EPOLL 963#if EV_USE_EPOLL
862 if (method == EVMETHOD_EPOLL ) epoll_destroy (EV_A); 964 if (backend == EVBACKEND_EPOLL ) epoll_destroy (EV_A);
863#endif 965#endif
864#if EV_USE_POLL 966#if EV_USE_POLL
865 if (method == EVMETHOD_POLL ) poll_destroy (EV_A); 967 if (backend == EVBACKEND_POLL ) poll_destroy (EV_A);
866#endif 968#endif
867#if EV_USE_SELECT 969#if EV_USE_SELECT
868 if (method == EVMETHOD_SELECT) select_destroy (EV_A); 970 if (backend == EVBACKEND_SELECT) select_destroy (EV_A);
869#endif 971#endif
870 972
871 for (i = NUMPRI; i--; ) 973 for (i = NUMPRI; i--; )
872 array_free (pending, [i]); 974 array_free (pending, [i]);
873 975
874 /* have to use the microsoft-never-gets-it-right macro */ 976 /* have to use the microsoft-never-gets-it-right macro */
875 array_free (fdchange, EMPTY0); 977 array_free (fdchange, EMPTY0);
876 array_free (timer, EMPTY0); 978 array_free (timer, EMPTY0);
877#if EV_PERIODICS 979#if EV_PERIODIC_ENABLE
878 array_free (periodic, EMPTY0); 980 array_free (periodic, EMPTY0);
879#endif 981#endif
880 array_free (idle, EMPTY0); 982 array_free (idle, EMPTY0);
881 array_free (prepare, EMPTY0); 983 array_free (prepare, EMPTY0);
882 array_free (check, EMPTY0); 984 array_free (check, EMPTY0);
883 985
884 method = 0; 986 backend = 0;
885} 987}
886 988
887static void 989void inline_size infy_fork (EV_P);
990
991void inline_size
888loop_fork (EV_P) 992loop_fork (EV_P)
889{ 993{
890#if EV_USE_PORT 994#if EV_USE_PORT
891 if (method == EVMETHOD_PORT ) port_fork (EV_A); 995 if (backend == EVBACKEND_PORT ) port_fork (EV_A);
892#endif 996#endif
893#if EV_USE_KQUEUE 997#if EV_USE_KQUEUE
894 if (method == EVMETHOD_KQUEUE) kqueue_fork (EV_A); 998 if (backend == EVBACKEND_KQUEUE) kqueue_fork (EV_A);
895#endif 999#endif
896#if EV_USE_EPOLL 1000#if EV_USE_EPOLL
897 if (method == EVMETHOD_EPOLL ) epoll_fork (EV_A); 1001 if (backend == EVBACKEND_EPOLL ) epoll_fork (EV_A);
1002#endif
1003#if EV_USE_INOTIFY
1004 infy_fork (EV_A);
898#endif 1005#endif
899 1006
900 if (ev_is_active (&sigev)) 1007 if (ev_is_active (&sigev))
901 { 1008 {
902 /* default loop */ 1009 /* default loop */
923 1030
924 memset (loop, 0, sizeof (struct ev_loop)); 1031 memset (loop, 0, sizeof (struct ev_loop));
925 1032
926 loop_init (EV_A_ flags); 1033 loop_init (EV_A_ flags);
927 1034
928 if (ev_method (EV_A)) 1035 if (ev_backend (EV_A))
929 return loop; 1036 return loop;
930 1037
931 return 0; 1038 return 0;
932} 1039}
933 1040
966 ev_default_loop_ptr = 1; 1073 ev_default_loop_ptr = 1;
967#endif 1074#endif
968 1075
969 loop_init (EV_A_ flags); 1076 loop_init (EV_A_ flags);
970 1077
971 if (ev_method (EV_A)) 1078 if (ev_backend (EV_A))
972 { 1079 {
973 siginit (EV_A); 1080 siginit (EV_A);
974 1081
975#ifndef _WIN32 1082#ifndef _WIN32
976 ev_signal_init (&childev, childcb, SIGCHLD); 1083 ev_signal_init (&childev, childcb, SIGCHLD);
1012{ 1119{
1013#if EV_MULTIPLICITY 1120#if EV_MULTIPLICITY
1014 struct ev_loop *loop = ev_default_loop_ptr; 1121 struct ev_loop *loop = ev_default_loop_ptr;
1015#endif 1122#endif
1016 1123
1017 if (method) 1124 if (backend)
1018 postfork = 1; 1125 postfork = 1;
1019} 1126}
1020 1127
1021/*****************************************************************************/ 1128/*****************************************************************************/
1022 1129
1023static int 1130int inline_size
1024any_pending (EV_P) 1131any_pending (EV_P)
1025{ 1132{
1026 int pri; 1133 int pri;
1027 1134
1028 for (pri = NUMPRI; pri--; ) 1135 for (pri = NUMPRI; pri--; )
1030 return 1; 1137 return 1;
1031 1138
1032 return 0; 1139 return 0;
1033} 1140}
1034 1141
1035inline void 1142void inline_speed
1036call_pending (EV_P) 1143call_pending (EV_P)
1037{ 1144{
1038 int pri; 1145 int pri;
1039 1146
1040 for (pri = NUMPRI; pri--; ) 1147 for (pri = NUMPRI; pri--; )
1042 { 1149 {
1043 ANPENDING *p = pendings [pri] + --pendingcnt [pri]; 1150 ANPENDING *p = pendings [pri] + --pendingcnt [pri];
1044 1151
1045 if (expect_true (p->w)) 1152 if (expect_true (p->w))
1046 { 1153 {
1154 /*assert (("non-pending watcher on pending list", p->w->pending));*/
1155
1047 p->w->pending = 0; 1156 p->w->pending = 0;
1048 EV_CB_INVOKE (p->w, p->events); 1157 EV_CB_INVOKE (p->w, p->events);
1049 } 1158 }
1050 } 1159 }
1051} 1160}
1052 1161
1053inline void 1162void inline_size
1054timers_reify (EV_P) 1163timers_reify (EV_P)
1055{ 1164{
1056 while (timercnt && ((WT)timers [0])->at <= mn_now) 1165 while (timercnt && ((WT)timers [0])->at <= mn_now)
1057 { 1166 {
1058 struct ev_timer *w = timers [0]; 1167 ev_timer *w = timers [0];
1059 1168
1060 assert (("inactive timer on timer heap detected", ev_is_active (w))); 1169 /*assert (("inactive timer on timer heap detected", ev_is_active (w)));*/
1061 1170
1062 /* first reschedule or stop timer */ 1171 /* first reschedule or stop timer */
1063 if (w->repeat) 1172 if (w->repeat)
1064 { 1173 {
1065 assert (("negative ev_timer repeat value found while processing timers", w->repeat > 0.)); 1174 assert (("negative ev_timer repeat value found while processing timers", w->repeat > 0.));
1075 1184
1076 ev_feed_event (EV_A_ (W)w, EV_TIMEOUT); 1185 ev_feed_event (EV_A_ (W)w, EV_TIMEOUT);
1077 } 1186 }
1078} 1187}
1079 1188
1080#if EV_PERIODICS 1189#if EV_PERIODIC_ENABLE
1081inline void 1190void inline_size
1082periodics_reify (EV_P) 1191periodics_reify (EV_P)
1083{ 1192{
1084 while (periodiccnt && ((WT)periodics [0])->at <= ev_rt_now) 1193 while (periodiccnt && ((WT)periodics [0])->at <= ev_rt_now)
1085 { 1194 {
1086 struct ev_periodic *w = periodics [0]; 1195 ev_periodic *w = periodics [0];
1087 1196
1088 assert (("inactive timer on periodic heap detected", ev_is_active (w))); 1197 /*assert (("inactive timer on periodic heap detected", ev_is_active (w)));*/
1089 1198
1090 /* first reschedule or stop timer */ 1199 /* first reschedule or stop timer */
1091 if (w->reschedule_cb) 1200 if (w->reschedule_cb)
1092 { 1201 {
1093 ((WT)w)->at = w->reschedule_cb (w, ev_rt_now + 0.0001); 1202 ((WT)w)->at = w->reschedule_cb (w, ev_rt_now + 0.0001);
1105 1214
1106 ev_feed_event (EV_A_ (W)w, EV_PERIODIC); 1215 ev_feed_event (EV_A_ (W)w, EV_PERIODIC);
1107 } 1216 }
1108} 1217}
1109 1218
1110static void 1219static void noinline
1111periodics_reschedule (EV_P) 1220periodics_reschedule (EV_P)
1112{ 1221{
1113 int i; 1222 int i;
1114 1223
1115 /* adjust periodics after time jump */ 1224 /* adjust periodics after time jump */
1116 for (i = 0; i < periodiccnt; ++i) 1225 for (i = 0; i < periodiccnt; ++i)
1117 { 1226 {
1118 struct ev_periodic *w = periodics [i]; 1227 ev_periodic *w = periodics [i];
1119 1228
1120 if (w->reschedule_cb) 1229 if (w->reschedule_cb)
1121 ((WT)w)->at = w->reschedule_cb (w, ev_rt_now); 1230 ((WT)w)->at = w->reschedule_cb (w, ev_rt_now);
1122 else if (w->interval) 1231 else if (w->interval)
1123 ((WT)w)->at += ceil ((ev_rt_now - ((WT)w)->at) / w->interval) * w->interval; 1232 ((WT)w)->at += ceil ((ev_rt_now - ((WT)w)->at) / w->interval) * w->interval;
1127 for (i = periodiccnt >> 1; i--; ) 1236 for (i = periodiccnt >> 1; i--; )
1128 downheap ((WT *)periodics, periodiccnt, i); 1237 downheap ((WT *)periodics, periodiccnt, i);
1129} 1238}
1130#endif 1239#endif
1131 1240
1132inline int 1241int inline_size
1133time_update_monotonic (EV_P) 1242time_update_monotonic (EV_P)
1134{ 1243{
1135 mn_now = get_clock (); 1244 mn_now = get_clock ();
1136 1245
1137 if (expect_true (mn_now - now_floor < MIN_TIMEJUMP * .5)) 1246 if (expect_true (mn_now - now_floor < MIN_TIMEJUMP * .5))
1145 ev_rt_now = ev_time (); 1254 ev_rt_now = ev_time ();
1146 return 1; 1255 return 1;
1147 } 1256 }
1148} 1257}
1149 1258
1150inline void 1259void inline_size
1151time_update (EV_P) 1260time_update (EV_P)
1152{ 1261{
1153 int i; 1262 int i;
1154 1263
1155#if EV_USE_MONOTONIC 1264#if EV_USE_MONOTONIC
1157 { 1266 {
1158 if (time_update_monotonic (EV_A)) 1267 if (time_update_monotonic (EV_A))
1159 { 1268 {
1160 ev_tstamp odiff = rtmn_diff; 1269 ev_tstamp odiff = rtmn_diff;
1161 1270
1162 for (i = 4; --i; ) /* loop a few times, before making important decisions */ 1271 /* loop a few times, before making important decisions.
1272 * on the choice of "4": one iteration isn't enough,
1273 * in case we get preempted during the calls to
1274 * ev_time and get_clock. a second call is almost guaranteed
1275 * to succeed in that case, though. and looping a few more times
1276 * doesn't hurt either as we only do this on time-jumps or
1277 * in the unlikely event of having been preempted here.
1278 */
1279 for (i = 4; --i; )
1163 { 1280 {
1164 rtmn_diff = ev_rt_now - mn_now; 1281 rtmn_diff = ev_rt_now - mn_now;
1165 1282
1166 if (fabs (odiff - rtmn_diff) < MIN_TIMEJUMP) 1283 if (fabs (odiff - rtmn_diff) < MIN_TIMEJUMP)
1167 return; /* all is well */ 1284 return; /* all is well */
1169 ev_rt_now = ev_time (); 1286 ev_rt_now = ev_time ();
1170 mn_now = get_clock (); 1287 mn_now = get_clock ();
1171 now_floor = mn_now; 1288 now_floor = mn_now;
1172 } 1289 }
1173 1290
1174# if EV_PERIODICS 1291# if EV_PERIODIC_ENABLE
1175 periodics_reschedule (EV_A); 1292 periodics_reschedule (EV_A);
1176# endif 1293# endif
1177 /* no timer adjustment, as the monotonic clock doesn't jump */ 1294 /* no timer adjustment, as the monotonic clock doesn't jump */
1178 /* timers_reschedule (EV_A_ rtmn_diff - odiff) */ 1295 /* timers_reschedule (EV_A_ rtmn_diff - odiff) */
1179 } 1296 }
1183 { 1300 {
1184 ev_rt_now = ev_time (); 1301 ev_rt_now = ev_time ();
1185 1302
1186 if (expect_false (mn_now > ev_rt_now || mn_now < ev_rt_now - MAX_BLOCKTIME - MIN_TIMEJUMP)) 1303 if (expect_false (mn_now > ev_rt_now || mn_now < ev_rt_now - MAX_BLOCKTIME - MIN_TIMEJUMP))
1187 { 1304 {
1188#if EV_PERIODICS 1305#if EV_PERIODIC_ENABLE
1189 periodics_reschedule (EV_A); 1306 periodics_reschedule (EV_A);
1190#endif 1307#endif
1191 1308
1192 /* adjust timers. this is easy, as the offset is the same for all */ 1309 /* adjust timers. this is easy, as the offset is the same for all of them */
1193 for (i = 0; i < timercnt; ++i) 1310 for (i = 0; i < timercnt; ++i)
1194 ((WT)timers [i])->at += ev_rt_now - mn_now; 1311 ((WT)timers [i])->at += ev_rt_now - mn_now;
1195 } 1312 }
1196 1313
1197 mn_now = ev_rt_now; 1314 mn_now = ev_rt_now;
1213static int loop_done; 1330static int loop_done;
1214 1331
1215void 1332void
1216ev_loop (EV_P_ int flags) 1333ev_loop (EV_P_ int flags)
1217{ 1334{
1218 double block;
1219 loop_done = flags & (EVLOOP_ONESHOT | EVLOOP_NONBLOCK) ? 1 : 0; 1335 loop_done = flags & (EVLOOP_ONESHOT | EVLOOP_NONBLOCK)
1336 ? EVUNLOOP_ONE
1337 : EVUNLOOP_CANCEL;
1220 1338
1221 while (activecnt) 1339 while (activecnt)
1222 { 1340 {
1341#if EV_FORK_ENABLE
1342 /* we might have forked, so queue fork handlers */
1343 if (expect_false (postfork))
1344 if (forkcnt)
1345 {
1346 queue_events (EV_A_ (W *)forks, forkcnt, EV_FORK);
1347 call_pending (EV_A);
1348 }
1349#endif
1350
1223 /* queue check watchers (and execute them) */ 1351 /* queue check watchers (and execute them) */
1224 if (expect_false (preparecnt)) 1352 if (expect_false (preparecnt))
1225 { 1353 {
1226 queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE); 1354 queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE);
1227 call_pending (EV_A); 1355 call_pending (EV_A);
1233 1361
1234 /* update fd-related kernel structures */ 1362 /* update fd-related kernel structures */
1235 fd_reify (EV_A); 1363 fd_reify (EV_A);
1236 1364
1237 /* calculate blocking time */ 1365 /* calculate blocking time */
1366 {
1367 ev_tstamp block;
1238 1368
1239 /* we only need this for !monotonic clock or timers, but as we basically 1369 if (flags & EVLOOP_NONBLOCK || idlecnt)
1240 always have timers, we just calculate it always */ 1370 block = 0.; /* do not block at all */
1371 else
1372 {
1373 /* update time to cancel out callback processing overhead */
1241#if EV_USE_MONOTONIC 1374#if EV_USE_MONOTONIC
1242 if (expect_true (have_monotonic)) 1375 if (expect_true (have_monotonic))
1243 time_update_monotonic (EV_A); 1376 time_update_monotonic (EV_A);
1244 else 1377 else
1245#endif 1378#endif
1246 { 1379 {
1247 ev_rt_now = ev_time (); 1380 ev_rt_now = ev_time ();
1248 mn_now = ev_rt_now; 1381 mn_now = ev_rt_now;
1249 } 1382 }
1250 1383
1251 if (flags & EVLOOP_NONBLOCK || idlecnt)
1252 block = 0.;
1253 else
1254 {
1255 block = MAX_BLOCKTIME; 1384 block = MAX_BLOCKTIME;
1256 1385
1257 if (timercnt) 1386 if (timercnt)
1258 { 1387 {
1259 ev_tstamp to = ((WT)timers [0])->at - mn_now + method_fudge; 1388 ev_tstamp to = ((WT)timers [0])->at - mn_now + backend_fudge;
1260 if (block > to) block = to; 1389 if (block > to) block = to;
1261 } 1390 }
1262 1391
1263#if EV_PERIODICS 1392#if EV_PERIODIC_ENABLE
1264 if (periodiccnt) 1393 if (periodiccnt)
1265 { 1394 {
1266 ev_tstamp to = ((WT)periodics [0])->at - ev_rt_now + method_fudge; 1395 ev_tstamp to = ((WT)periodics [0])->at - ev_rt_now + backend_fudge;
1267 if (block > to) block = to; 1396 if (block > to) block = to;
1268 } 1397 }
1269#endif 1398#endif
1270 1399
1271 if (expect_false (block < 0.)) block = 0.; 1400 if (expect_false (block < 0.)) block = 0.;
1272 } 1401 }
1273 1402
1274 method_poll (EV_A_ block); 1403 backend_poll (EV_A_ block);
1404 }
1275 1405
1276 /* update ev_rt_now, do magic */ 1406 /* update ev_rt_now, do magic */
1277 time_update (EV_A); 1407 time_update (EV_A);
1278 1408
1279 /* queue pending timers and reschedule them */ 1409 /* queue pending timers and reschedule them */
1280 timers_reify (EV_A); /* relative timers called last */ 1410 timers_reify (EV_A); /* relative timers called last */
1281#if EV_PERIODICS 1411#if EV_PERIODIC_ENABLE
1282 periodics_reify (EV_A); /* absolute timers called first */ 1412 periodics_reify (EV_A); /* absolute timers called first */
1283#endif 1413#endif
1284 1414
1285 /* queue idle watchers unless io or timers are pending */ 1415 /* queue idle watchers unless other events are pending */
1286 if (idlecnt && !any_pending (EV_A)) 1416 if (idlecnt && !any_pending (EV_A))
1287 queue_events (EV_A_ (W *)idles, idlecnt, EV_IDLE); 1417 queue_events (EV_A_ (W *)idles, idlecnt, EV_IDLE);
1288 1418
1289 /* queue check watchers, to be executed first */ 1419 /* queue check watchers, to be executed first */
1290 if (expect_false (checkcnt)) 1420 if (expect_false (checkcnt))
1294 1424
1295 if (expect_false (loop_done)) 1425 if (expect_false (loop_done))
1296 break; 1426 break;
1297 } 1427 }
1298 1428
1299 if (loop_done != 2) 1429 if (loop_done == EVUNLOOP_ONE)
1300 loop_done = 0; 1430 loop_done = EVUNLOOP_CANCEL;
1301} 1431}
1302 1432
1303void 1433void
1304ev_unloop (EV_P_ int how) 1434ev_unloop (EV_P_ int how)
1305{ 1435{
1306 loop_done = how; 1436 loop_done = how;
1307} 1437}
1308 1438
1309/*****************************************************************************/ 1439/*****************************************************************************/
1310 1440
1311inline void 1441void inline_size
1312wlist_add (WL *head, WL elem) 1442wlist_add (WL *head, WL elem)
1313{ 1443{
1314 elem->next = *head; 1444 elem->next = *head;
1315 *head = elem; 1445 *head = elem;
1316} 1446}
1317 1447
1318inline void 1448void inline_size
1319wlist_del (WL *head, WL elem) 1449wlist_del (WL *head, WL elem)
1320{ 1450{
1321 while (*head) 1451 while (*head)
1322 { 1452 {
1323 if (*head == elem) 1453 if (*head == elem)
1328 1458
1329 head = &(*head)->next; 1459 head = &(*head)->next;
1330 } 1460 }
1331} 1461}
1332 1462
1333inline void 1463void inline_speed
1334ev_clear_pending (EV_P_ W w) 1464ev_clear_pending (EV_P_ W w)
1335{ 1465{
1336 if (w->pending) 1466 if (w->pending)
1337 { 1467 {
1338 pendings [ABSPRI (w)][w->pending - 1].w = 0; 1468 pendings [ABSPRI (w)][w->pending - 1].w = 0;
1339 w->pending = 0; 1469 w->pending = 0;
1340 } 1470 }
1341} 1471}
1342 1472
1343inline void 1473void inline_speed
1344ev_start (EV_P_ W w, int active) 1474ev_start (EV_P_ W w, int active)
1345{ 1475{
1346 if (w->priority < EV_MINPRI) w->priority = EV_MINPRI; 1476 if (w->priority < EV_MINPRI) w->priority = EV_MINPRI;
1347 if (w->priority > EV_MAXPRI) w->priority = EV_MAXPRI; 1477 if (w->priority > EV_MAXPRI) w->priority = EV_MAXPRI;
1348 1478
1349 w->active = active; 1479 w->active = active;
1350 ev_ref (EV_A); 1480 ev_ref (EV_A);
1351} 1481}
1352 1482
1353inline void 1483void inline_size
1354ev_stop (EV_P_ W w) 1484ev_stop (EV_P_ W w)
1355{ 1485{
1356 ev_unref (EV_A); 1486 ev_unref (EV_A);
1357 w->active = 0; 1487 w->active = 0;
1358} 1488}
1359 1489
1360/*****************************************************************************/ 1490/*****************************************************************************/
1361 1491
1362void 1492void
1363ev_io_start (EV_P_ struct ev_io *w) 1493ev_io_start (EV_P_ ev_io *w)
1364{ 1494{
1365 int fd = w->fd; 1495 int fd = w->fd;
1366 1496
1367 if (expect_false (ev_is_active (w))) 1497 if (expect_false (ev_is_active (w)))
1368 return; 1498 return;
1375 1505
1376 fd_change (EV_A_ fd); 1506 fd_change (EV_A_ fd);
1377} 1507}
1378 1508
1379void 1509void
1380ev_io_stop (EV_P_ struct ev_io *w) 1510ev_io_stop (EV_P_ ev_io *w)
1381{ 1511{
1382 ev_clear_pending (EV_A_ (W)w); 1512 ev_clear_pending (EV_A_ (W)w);
1383 if (expect_false (!ev_is_active (w))) 1513 if (expect_false (!ev_is_active (w)))
1384 return; 1514 return;
1385 1515
1390 1520
1391 fd_change (EV_A_ w->fd); 1521 fd_change (EV_A_ w->fd);
1392} 1522}
1393 1523
1394void 1524void
1395ev_timer_start (EV_P_ struct ev_timer *w) 1525ev_timer_start (EV_P_ ev_timer *w)
1396{ 1526{
1397 if (expect_false (ev_is_active (w))) 1527 if (expect_false (ev_is_active (w)))
1398 return; 1528 return;
1399 1529
1400 ((WT)w)->at += mn_now; 1530 ((WT)w)->at += mn_now;
1401 1531
1402 assert (("ev_timer_start called with negative timer repeat value", w->repeat >= 0.)); 1532 assert (("ev_timer_start called with negative timer repeat value", w->repeat >= 0.));
1403 1533
1404 ev_start (EV_A_ (W)w, ++timercnt); 1534 ev_start (EV_A_ (W)w, ++timercnt);
1405 array_needsize (struct ev_timer *, timers, timermax, timercnt, EMPTY2); 1535 array_needsize (ev_timer *, timers, timermax, timercnt, EMPTY2);
1406 timers [timercnt - 1] = w; 1536 timers [timercnt - 1] = w;
1407 upheap ((WT *)timers, timercnt - 1); 1537 upheap ((WT *)timers, timercnt - 1);
1408 1538
1409 assert (("internal timer heap corruption", timers [((W)w)->active - 1] == w)); 1539 /*assert (("internal timer heap corruption", timers [((W)w)->active - 1] == w));*/
1410} 1540}
1411 1541
1412void 1542void
1413ev_timer_stop (EV_P_ struct ev_timer *w) 1543ev_timer_stop (EV_P_ ev_timer *w)
1414{ 1544{
1415 ev_clear_pending (EV_A_ (W)w); 1545 ev_clear_pending (EV_A_ (W)w);
1416 if (expect_false (!ev_is_active (w))) 1546 if (expect_false (!ev_is_active (w)))
1417 return; 1547 return;
1418 1548
1419 assert (("internal timer heap corruption", timers [((W)w)->active - 1] == w)); 1549 assert (("internal timer heap corruption", timers [((W)w)->active - 1] == w));
1420 1550
1551 {
1552 int active = ((W)w)->active;
1553
1421 if (expect_true (((W)w)->active < timercnt--)) 1554 if (expect_true (--active < --timercnt))
1422 { 1555 {
1423 timers [((W)w)->active - 1] = timers [timercnt]; 1556 timers [active] = timers [timercnt];
1424 adjustheap ((WT *)timers, timercnt, ((W)w)->active - 1); 1557 adjustheap ((WT *)timers, timercnt, active);
1425 } 1558 }
1559 }
1426 1560
1427 ((WT)w)->at -= mn_now; 1561 ((WT)w)->at -= mn_now;
1428 1562
1429 ev_stop (EV_A_ (W)w); 1563 ev_stop (EV_A_ (W)w);
1430} 1564}
1431 1565
1432void 1566void
1433ev_timer_again (EV_P_ struct ev_timer *w) 1567ev_timer_again (EV_P_ ev_timer *w)
1434{ 1568{
1435 if (ev_is_active (w)) 1569 if (ev_is_active (w))
1436 { 1570 {
1437 if (w->repeat) 1571 if (w->repeat)
1438 { 1572 {
1447 w->at = w->repeat; 1581 w->at = w->repeat;
1448 ev_timer_start (EV_A_ w); 1582 ev_timer_start (EV_A_ w);
1449 } 1583 }
1450} 1584}
1451 1585
1452#if EV_PERIODICS 1586#if EV_PERIODIC_ENABLE
1453void 1587void
1454ev_periodic_start (EV_P_ struct ev_periodic *w) 1588ev_periodic_start (EV_P_ ev_periodic *w)
1455{ 1589{
1456 if (expect_false (ev_is_active (w))) 1590 if (expect_false (ev_is_active (w)))
1457 return; 1591 return;
1458 1592
1459 if (w->reschedule_cb) 1593 if (w->reschedule_cb)
1464 /* this formula differs from the one in periodic_reify because we do not always round up */ 1598 /* this formula differs from the one in periodic_reify because we do not always round up */
1465 ((WT)w)->at += ceil ((ev_rt_now - ((WT)w)->at) / w->interval) * w->interval; 1599 ((WT)w)->at += ceil ((ev_rt_now - ((WT)w)->at) / w->interval) * w->interval;
1466 } 1600 }
1467 1601
1468 ev_start (EV_A_ (W)w, ++periodiccnt); 1602 ev_start (EV_A_ (W)w, ++periodiccnt);
1469 array_needsize (struct ev_periodic *, periodics, periodicmax, periodiccnt, EMPTY2); 1603 array_needsize (ev_periodic *, periodics, periodicmax, periodiccnt, EMPTY2);
1470 periodics [periodiccnt - 1] = w; 1604 periodics [periodiccnt - 1] = w;
1471 upheap ((WT *)periodics, periodiccnt - 1); 1605 upheap ((WT *)periodics, periodiccnt - 1);
1472 1606
1473 assert (("internal periodic heap corruption", periodics [((W)w)->active - 1] == w)); 1607 /*assert (("internal periodic heap corruption", periodics [((W)w)->active - 1] == w));*/
1474} 1608}
1475 1609
1476void 1610void
1477ev_periodic_stop (EV_P_ struct ev_periodic *w) 1611ev_periodic_stop (EV_P_ ev_periodic *w)
1478{ 1612{
1479 ev_clear_pending (EV_A_ (W)w); 1613 ev_clear_pending (EV_A_ (W)w);
1480 if (expect_false (!ev_is_active (w))) 1614 if (expect_false (!ev_is_active (w)))
1481 return; 1615 return;
1482 1616
1483 assert (("internal periodic heap corruption", periodics [((W)w)->active - 1] == w)); 1617 assert (("internal periodic heap corruption", periodics [((W)w)->active - 1] == w));
1484 1618
1619 {
1620 int active = ((W)w)->active;
1621
1485 if (expect_true (((W)w)->active < periodiccnt--)) 1622 if (expect_true (--active < --periodiccnt))
1486 { 1623 {
1487 periodics [((W)w)->active - 1] = periodics [periodiccnt]; 1624 periodics [active] = periodics [periodiccnt];
1488 adjustheap ((WT *)periodics, periodiccnt, ((W)w)->active - 1); 1625 adjustheap ((WT *)periodics, periodiccnt, active);
1489 } 1626 }
1627 }
1490 1628
1491 ev_stop (EV_A_ (W)w); 1629 ev_stop (EV_A_ (W)w);
1492} 1630}
1493 1631
1494void 1632void
1495ev_periodic_again (EV_P_ struct ev_periodic *w) 1633ev_periodic_again (EV_P_ ev_periodic *w)
1496{ 1634{
1497 /* TODO: use adjustheap and recalculation */ 1635 /* TODO: use adjustheap and recalculation */
1498 ev_periodic_stop (EV_A_ w); 1636 ev_periodic_stop (EV_A_ w);
1499 ev_periodic_start (EV_A_ w); 1637 ev_periodic_start (EV_A_ w);
1500} 1638}
1501#endif 1639#endif
1502 1640
1503void
1504ev_idle_start (EV_P_ struct ev_idle *w)
1505{
1506 if (expect_false (ev_is_active (w)))
1507 return;
1508
1509 ev_start (EV_A_ (W)w, ++idlecnt);
1510 array_needsize (struct ev_idle *, idles, idlemax, idlecnt, EMPTY2);
1511 idles [idlecnt - 1] = w;
1512}
1513
1514void
1515ev_idle_stop (EV_P_ struct ev_idle *w)
1516{
1517 ev_clear_pending (EV_A_ (W)w);
1518 if (expect_false (!ev_is_active (w)))
1519 return;
1520
1521 idles [((W)w)->active - 1] = idles [--idlecnt];
1522 ev_stop (EV_A_ (W)w);
1523}
1524
1525void
1526ev_prepare_start (EV_P_ struct ev_prepare *w)
1527{
1528 if (expect_false (ev_is_active (w)))
1529 return;
1530
1531 ev_start (EV_A_ (W)w, ++preparecnt);
1532 array_needsize (struct ev_prepare *, prepares, preparemax, preparecnt, EMPTY2);
1533 prepares [preparecnt - 1] = w;
1534}
1535
1536void
1537ev_prepare_stop (EV_P_ struct ev_prepare *w)
1538{
1539 ev_clear_pending (EV_A_ (W)w);
1540 if (expect_false (!ev_is_active (w)))
1541 return;
1542
1543 prepares [((W)w)->active - 1] = prepares [--preparecnt];
1544 ev_stop (EV_A_ (W)w);
1545}
1546
1547void
1548ev_check_start (EV_P_ struct ev_check *w)
1549{
1550 if (expect_false (ev_is_active (w)))
1551 return;
1552
1553 ev_start (EV_A_ (W)w, ++checkcnt);
1554 array_needsize (struct ev_check *, checks, checkmax, checkcnt, EMPTY2);
1555 checks [checkcnt - 1] = w;
1556}
1557
1558void
1559ev_check_stop (EV_P_ struct ev_check *w)
1560{
1561 ev_clear_pending (EV_A_ (W)w);
1562 if (expect_false (!ev_is_active (w)))
1563 return;
1564
1565 checks [((W)w)->active - 1] = checks [--checkcnt];
1566 ev_stop (EV_A_ (W)w);
1567}
1568
1569#ifndef SA_RESTART 1641#ifndef SA_RESTART
1570# define SA_RESTART 0 1642# define SA_RESTART 0
1571#endif 1643#endif
1572 1644
1573void 1645void
1574ev_signal_start (EV_P_ struct ev_signal *w) 1646ev_signal_start (EV_P_ ev_signal *w)
1575{ 1647{
1576#if EV_MULTIPLICITY 1648#if EV_MULTIPLICITY
1577 assert (("signal watchers are only supported in the default loop", loop == ev_default_loop_ptr)); 1649 assert (("signal watchers are only supported in the default loop", loop == ev_default_loop_ptr));
1578#endif 1650#endif
1579 if (expect_false (ev_is_active (w))) 1651 if (expect_false (ev_is_active (w)))
1598#endif 1670#endif
1599 } 1671 }
1600} 1672}
1601 1673
1602void 1674void
1603ev_signal_stop (EV_P_ struct ev_signal *w) 1675ev_signal_stop (EV_P_ ev_signal *w)
1604{ 1676{
1605 ev_clear_pending (EV_A_ (W)w); 1677 ev_clear_pending (EV_A_ (W)w);
1606 if (expect_false (!ev_is_active (w))) 1678 if (expect_false (!ev_is_active (w)))
1607 return; 1679 return;
1608 1680
1612 if (!signals [w->signum - 1].head) 1684 if (!signals [w->signum - 1].head)
1613 signal (w->signum, SIG_DFL); 1685 signal (w->signum, SIG_DFL);
1614} 1686}
1615 1687
1616void 1688void
1617ev_child_start (EV_P_ struct ev_child *w) 1689ev_child_start (EV_P_ ev_child *w)
1618{ 1690{
1619#if EV_MULTIPLICITY 1691#if EV_MULTIPLICITY
1620 assert (("child watchers are only supported in the default loop", loop == ev_default_loop_ptr)); 1692 assert (("child watchers are only supported in the default loop", loop == ev_default_loop_ptr));
1621#endif 1693#endif
1622 if (expect_false (ev_is_active (w))) 1694 if (expect_false (ev_is_active (w)))
1623 return; 1695 return;
1624 1696
1625 ev_start (EV_A_ (W)w, 1); 1697 ev_start (EV_A_ (W)w, 1);
1626 wlist_add ((WL *)&childs [w->pid & (PID_HASHSIZE - 1)], (WL)w); 1698 wlist_add ((WL *)&childs [w->pid & (EV_PID_HASHSIZE - 1)], (WL)w);
1627} 1699}
1628 1700
1629void 1701void
1630ev_child_stop (EV_P_ struct ev_child *w) 1702ev_child_stop (EV_P_ ev_child *w)
1631{ 1703{
1632 ev_clear_pending (EV_A_ (W)w); 1704 ev_clear_pending (EV_A_ (W)w);
1633 if (expect_false (!ev_is_active (w))) 1705 if (expect_false (!ev_is_active (w)))
1634 return; 1706 return;
1635 1707
1636 wlist_del ((WL *)&childs [w->pid & (PID_HASHSIZE - 1)], (WL)w); 1708 wlist_del ((WL *)&childs [w->pid & (EV_PID_HASHSIZE - 1)], (WL)w);
1637 ev_stop (EV_A_ (W)w); 1709 ev_stop (EV_A_ (W)w);
1638} 1710}
1639 1711
1712#if EV_STAT_ENABLE
1713
1714# ifdef _WIN32
1715# undef lstat
1716# define lstat(a,b) _stati64 (a,b)
1717# endif
1718
1719#define DEF_STAT_INTERVAL 5.0074891
1720#define MIN_STAT_INTERVAL 0.1074891
1721
1722static void noinline stat_timer_cb (EV_P_ ev_timer *w_, int revents);
1723
1724#if EV_USE_INOTIFY
1725# define EV_INOTIFY_BUFSIZE 8192
1726
1727static void noinline
1728infy_add (EV_P_ ev_stat *w)
1729{
1730 w->wd = inotify_add_watch (fs_fd, w->path, IN_ATTRIB | IN_DELETE_SELF | IN_MOVE_SELF | IN_MODIFY | IN_DONT_FOLLOW | IN_MASK_ADD);
1731
1732 if (w->wd < 0)
1733 {
1734 ev_timer_start (EV_A_ &w->timer); /* this is not race-free, so we still need to recheck periodically */
1735
1736 /* monitor some parent directory for speedup hints */
1737 if ((errno == ENOENT || errno == EACCES) && strlen (w->path) < 4096)
1738 {
1739 char path [4096];
1740 strcpy (path, w->path);
1741
1742 do
1743 {
1744 int mask = IN_MASK_ADD | IN_DELETE_SELF | IN_MOVE_SELF
1745 | (errno == EACCES ? IN_ATTRIB : IN_CREATE | IN_MOVED_TO);
1746
1747 char *pend = strrchr (path, '/');
1748
1749 if (!pend)
1750 break; /* whoops, no '/', complain to your admin */
1751
1752 *pend = 0;
1753 w->wd = inotify_add_watch (fs_fd, path, mask);
1754 }
1755 while (w->wd < 0 && (errno == ENOENT || errno == EACCES));
1756 }
1757 }
1758 else
1759 ev_timer_stop (EV_A_ &w->timer); /* we can watch this in a race-free way */
1760
1761 if (w->wd >= 0)
1762 wlist_add (&fs_hash [w->wd & (EV_INOTIFY_HASHSIZE - 1)].head, (WL)w);
1763}
1764
1765static void noinline
1766infy_del (EV_P_ ev_stat *w)
1767{
1768 int slot;
1769 int wd = w->wd;
1770
1771 if (wd < 0)
1772 return;
1773
1774 w->wd = -2;
1775 slot = wd & (EV_INOTIFY_HASHSIZE - 1);
1776 wlist_del (&fs_hash [slot].head, (WL)w);
1777
1778 /* remove this watcher, if others are watching it, they will rearm */
1779 inotify_rm_watch (fs_fd, wd);
1780}
1781
1782static void noinline
1783infy_wd (EV_P_ int slot, int wd, struct inotify_event *ev)
1784{
1785 if (slot < 0)
1786 /* overflow, need to check for all hahs slots */
1787 for (slot = 0; slot < EV_INOTIFY_HASHSIZE; ++slot)
1788 infy_wd (EV_A_ slot, wd, ev);
1789 else
1790 {
1791 WL w_;
1792
1793 for (w_ = fs_hash [slot & (EV_INOTIFY_HASHSIZE - 1)].head; w_; )
1794 {
1795 ev_stat *w = (ev_stat *)w_;
1796 w_ = w_->next; /* lets us remove this watcher and all before it */
1797
1798 if (w->wd == wd || wd == -1)
1799 {
1800 if (ev->mask & (IN_IGNORED | IN_UNMOUNT | IN_DELETE_SELF))
1801 {
1802 w->wd = -1;
1803 infy_add (EV_A_ w); /* re-add, no matter what */
1804 }
1805
1806 stat_timer_cb (EV_A_ &w->timer, 0);
1807 }
1808 }
1809 }
1810}
1811
1812static void
1813infy_cb (EV_P_ ev_io *w, int revents)
1814{
1815 char buf [EV_INOTIFY_BUFSIZE];
1816 struct inotify_event *ev = (struct inotify_event *)buf;
1817 int ofs;
1818 int len = read (fs_fd, buf, sizeof (buf));
1819
1820 for (ofs = 0; ofs < len; ofs += sizeof (struct inotify_event) + ev->len)
1821 infy_wd (EV_A_ ev->wd, ev->wd, ev);
1822}
1823
1824void inline_size
1825infy_init (EV_P)
1826{
1827 if (fs_fd != -2)
1828 return;
1829
1830 fs_fd = inotify_init ();
1831
1832 if (fs_fd >= 0)
1833 {
1834 ev_io_init (&fs_w, infy_cb, fs_fd, EV_READ);
1835 ev_set_priority (&fs_w, EV_MAXPRI);
1836 ev_io_start (EV_A_ &fs_w);
1837 }
1838}
1839
1840void inline_size
1841infy_fork (EV_P)
1842{
1843 int slot;
1844
1845 if (fs_fd < 0)
1846 return;
1847
1848 close (fs_fd);
1849 fs_fd = inotify_init ();
1850
1851 for (slot = 0; slot < EV_INOTIFY_HASHSIZE; ++slot)
1852 {
1853 WL w_ = fs_hash [slot].head;
1854 fs_hash [slot].head = 0;
1855
1856 while (w_)
1857 {
1858 ev_stat *w = (ev_stat *)w_;
1859 w_ = w_->next; /* lets us add this watcher */
1860
1861 w->wd = -1;
1862
1863 if (fs_fd >= 0)
1864 infy_add (EV_A_ w); /* re-add, no matter what */
1865 else
1866 ev_timer_start (EV_A_ &w->timer);
1867 }
1868
1869 }
1870}
1871
1872#endif
1873
1874void
1875ev_stat_stat (EV_P_ ev_stat *w)
1876{
1877 if (lstat (w->path, &w->attr) < 0)
1878 w->attr.st_nlink = 0;
1879 else if (!w->attr.st_nlink)
1880 w->attr.st_nlink = 1;
1881}
1882
1883static void noinline
1884stat_timer_cb (EV_P_ ev_timer *w_, int revents)
1885{
1886 ev_stat *w = (ev_stat *)(((char *)w_) - offsetof (ev_stat, timer));
1887
1888 /* we copy this here each the time so that */
1889 /* prev has the old value when the callback gets invoked */
1890 w->prev = w->attr;
1891 ev_stat_stat (EV_A_ w);
1892
1893 /* memcmp doesn't work on netbsd, they.... do stuff to their struct stat */
1894 if (
1895 w->prev.st_dev != w->attr.st_dev
1896 || w->prev.st_ino != w->attr.st_ino
1897 || w->prev.st_mode != w->attr.st_mode
1898 || w->prev.st_nlink != w->attr.st_nlink
1899 || w->prev.st_uid != w->attr.st_uid
1900 || w->prev.st_gid != w->attr.st_gid
1901 || w->prev.st_rdev != w->attr.st_rdev
1902 || w->prev.st_size != w->attr.st_size
1903 || w->prev.st_atime != w->attr.st_atime
1904 || w->prev.st_mtime != w->attr.st_mtime
1905 || w->prev.st_ctime != w->attr.st_ctime
1906 ) {
1907 #if EV_USE_INOTIFY
1908 infy_del (EV_A_ w);
1909 infy_add (EV_A_ w);
1910 ev_stat_stat (EV_A_ w); /* avoid race... */
1911 #endif
1912
1913 ev_feed_event (EV_A_ w, EV_STAT);
1914 }
1915}
1916
1917void
1918ev_stat_start (EV_P_ ev_stat *w)
1919{
1920 if (expect_false (ev_is_active (w)))
1921 return;
1922
1923 /* since we use memcmp, we need to clear any padding data etc. */
1924 memset (&w->prev, 0, sizeof (ev_statdata));
1925 memset (&w->attr, 0, sizeof (ev_statdata));
1926
1927 ev_stat_stat (EV_A_ w);
1928
1929 if (w->interval < MIN_STAT_INTERVAL)
1930 w->interval = w->interval ? MIN_STAT_INTERVAL : DEF_STAT_INTERVAL;
1931
1932 ev_timer_init (&w->timer, stat_timer_cb, w->interval, w->interval);
1933 ev_set_priority (&w->timer, ev_priority (w));
1934
1935#if EV_USE_INOTIFY
1936 infy_init (EV_A);
1937
1938 if (fs_fd >= 0)
1939 infy_add (EV_A_ w);
1940 else
1941#endif
1942 ev_timer_start (EV_A_ &w->timer);
1943
1944 ev_start (EV_A_ (W)w, 1);
1945}
1946
1947void
1948ev_stat_stop (EV_P_ ev_stat *w)
1949{
1950 ev_clear_pending (EV_A_ (W)w);
1951 if (expect_false (!ev_is_active (w)))
1952 return;
1953
1954#if EV_USE_INOTIFY
1955 infy_del (EV_A_ w);
1956#endif
1957 ev_timer_stop (EV_A_ &w->timer);
1958
1959 ev_stop (EV_A_ (W)w);
1960}
1961#endif
1962
1963void
1964ev_idle_start (EV_P_ ev_idle *w)
1965{
1966 if (expect_false (ev_is_active (w)))
1967 return;
1968
1969 ev_start (EV_A_ (W)w, ++idlecnt);
1970 array_needsize (ev_idle *, idles, idlemax, idlecnt, EMPTY2);
1971 idles [idlecnt - 1] = w;
1972}
1973
1974void
1975ev_idle_stop (EV_P_ ev_idle *w)
1976{
1977 ev_clear_pending (EV_A_ (W)w);
1978 if (expect_false (!ev_is_active (w)))
1979 return;
1980
1981 {
1982 int active = ((W)w)->active;
1983 idles [active - 1] = idles [--idlecnt];
1984 ((W)idles [active - 1])->active = active;
1985 }
1986
1987 ev_stop (EV_A_ (W)w);
1988}
1989
1990void
1991ev_prepare_start (EV_P_ ev_prepare *w)
1992{
1993 if (expect_false (ev_is_active (w)))
1994 return;
1995
1996 ev_start (EV_A_ (W)w, ++preparecnt);
1997 array_needsize (ev_prepare *, prepares, preparemax, preparecnt, EMPTY2);
1998 prepares [preparecnt - 1] = w;
1999}
2000
2001void
2002ev_prepare_stop (EV_P_ ev_prepare *w)
2003{
2004 ev_clear_pending (EV_A_ (W)w);
2005 if (expect_false (!ev_is_active (w)))
2006 return;
2007
2008 {
2009 int active = ((W)w)->active;
2010 prepares [active - 1] = prepares [--preparecnt];
2011 ((W)prepares [active - 1])->active = active;
2012 }
2013
2014 ev_stop (EV_A_ (W)w);
2015}
2016
2017void
2018ev_check_start (EV_P_ ev_check *w)
2019{
2020 if (expect_false (ev_is_active (w)))
2021 return;
2022
2023 ev_start (EV_A_ (W)w, ++checkcnt);
2024 array_needsize (ev_check *, checks, checkmax, checkcnt, EMPTY2);
2025 checks [checkcnt - 1] = w;
2026}
2027
2028void
2029ev_check_stop (EV_P_ ev_check *w)
2030{
2031 ev_clear_pending (EV_A_ (W)w);
2032 if (expect_false (!ev_is_active (w)))
2033 return;
2034
2035 {
2036 int active = ((W)w)->active;
2037 checks [active - 1] = checks [--checkcnt];
2038 ((W)checks [active - 1])->active = active;
2039 }
2040
2041 ev_stop (EV_A_ (W)w);
2042}
2043
2044#if EV_EMBED_ENABLE
2045void noinline
2046ev_embed_sweep (EV_P_ ev_embed *w)
2047{
2048 ev_loop (w->loop, EVLOOP_NONBLOCK);
2049}
2050
2051static void
2052embed_cb (EV_P_ ev_io *io, int revents)
2053{
2054 ev_embed *w = (ev_embed *)(((char *)io) - offsetof (ev_embed, io));
2055
2056 if (ev_cb (w))
2057 ev_feed_event (EV_A_ (W)w, EV_EMBED);
2058 else
2059 ev_embed_sweep (loop, w);
2060}
2061
2062void
2063ev_embed_start (EV_P_ ev_embed *w)
2064{
2065 if (expect_false (ev_is_active (w)))
2066 return;
2067
2068 {
2069 struct ev_loop *loop = w->loop;
2070 assert (("loop to be embedded is not embeddable", backend & ev_embeddable_backends ()));
2071 ev_io_init (&w->io, embed_cb, backend_fd, EV_READ);
2072 }
2073
2074 ev_set_priority (&w->io, ev_priority (w));
2075 ev_io_start (EV_A_ &w->io);
2076
2077 ev_start (EV_A_ (W)w, 1);
2078}
2079
2080void
2081ev_embed_stop (EV_P_ ev_embed *w)
2082{
2083 ev_clear_pending (EV_A_ (W)w);
2084 if (expect_false (!ev_is_active (w)))
2085 return;
2086
2087 ev_io_stop (EV_A_ &w->io);
2088
2089 ev_stop (EV_A_ (W)w);
2090}
2091#endif
2092
2093#if EV_FORK_ENABLE
2094void
2095ev_fork_start (EV_P_ ev_fork *w)
2096{
2097 if (expect_false (ev_is_active (w)))
2098 return;
2099
2100 ev_start (EV_A_ (W)w, ++forkcnt);
2101 array_needsize (ev_fork *, forks, forkmax, forkcnt, EMPTY2);
2102 forks [forkcnt - 1] = w;
2103}
2104
2105void
2106ev_fork_stop (EV_P_ ev_fork *w)
2107{
2108 ev_clear_pending (EV_A_ (W)w);
2109 if (expect_false (!ev_is_active (w)))
2110 return;
2111
2112 {
2113 int active = ((W)w)->active;
2114 forks [active - 1] = forks [--forkcnt];
2115 ((W)forks [active - 1])->active = active;
2116 }
2117
2118 ev_stop (EV_A_ (W)w);
2119}
2120#endif
2121
1640/*****************************************************************************/ 2122/*****************************************************************************/
1641 2123
1642struct ev_once 2124struct ev_once
1643{ 2125{
1644 struct ev_io io; 2126 ev_io io;
1645 struct ev_timer to; 2127 ev_timer to;
1646 void (*cb)(int revents, void *arg); 2128 void (*cb)(int revents, void *arg);
1647 void *arg; 2129 void *arg;
1648}; 2130};
1649 2131
1650static void 2132static void
1659 2141
1660 cb (revents, arg); 2142 cb (revents, arg);
1661} 2143}
1662 2144
1663static void 2145static void
1664once_cb_io (EV_P_ struct ev_io *w, int revents) 2146once_cb_io (EV_P_ ev_io *w, int revents)
1665{ 2147{
1666 once_cb (EV_A_ (struct ev_once *)(((char *)w) - offsetof (struct ev_once, io)), revents); 2148 once_cb (EV_A_ (struct ev_once *)(((char *)w) - offsetof (struct ev_once, io)), revents);
1667} 2149}
1668 2150
1669static void 2151static void
1670once_cb_to (EV_P_ struct ev_timer *w, int revents) 2152once_cb_to (EV_P_ ev_timer *w, int revents)
1671{ 2153{
1672 once_cb (EV_A_ (struct ev_once *)(((char *)w) - offsetof (struct ev_once, to)), revents); 2154 once_cb (EV_A_ (struct ev_once *)(((char *)w) - offsetof (struct ev_once, to)), revents);
1673} 2155}
1674 2156
1675void 2157void

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