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Comparing libev/ev.c (file contents):
Revision 1.141 by root, Mon Nov 26 20:33:58 2007 UTC vs.
Revision 1.183 by root, Wed Dec 12 05:11:56 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>
109#include <errno.h> 117#include <errno.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>
122
123#ifdef EV_H
124# include EV_H
125#else
126# include "ev.h"
127#endif
114 128
115#ifndef _WIN32 129#ifndef _WIN32
116# include <sys/time.h> 130# include <sys/time.h>
117# include <sys/wait.h> 131# include <sys/wait.h>
118# include <unistd.h> 132# include <unistd.h>
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/**/
220
221/*
222 * This is used to avoid floating point rounding problems.
223 * It is added to ev_rt_now when scheduling periodics
224 * to ensure progress, time-wise, even when rounding
225 * errors are against us.
226 * This value is good at least till the year 4000.
227 * Better solutions welcome.
228 */
229#define TIME_EPSILON 0.0001220703125 /* 1/8192 */
178 230
179#define MIN_TIMEJUMP 1. /* minimum timejump that gets detected (if monotonic clock available) */ 231#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) */ 232#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 */ 233/*#define CLEANUP_INTERVAL (MAX_BLOCKTIME * 5.) /* how often to try to free memory and re-check fds, TODO */
183
184#ifdef EV_H
185# include EV_H
186#else
187# include "ev.h"
188#endif
189 234
190#if __GNUC__ >= 3 235#if __GNUC__ >= 3
191# define expect(expr,value) __builtin_expect ((expr),(value)) 236# define expect(expr,value) __builtin_expect ((expr),(value))
192# define inline_size static inline /* inline for codesize */
193# if EV_MINIMAL
194# define noinline __attribute__ ((noinline)) 237# define noinline __attribute__ ((noinline))
195# define inline_speed static noinline
196# else
197# define noinline
198# define inline_speed static inline
199# endif
200#else 238#else
201# define expect(expr,value) (expr) 239# define expect(expr,value) (expr)
202# define inline_speed static
203# define inline_minimal static
204# define noinline 240# define noinline
241# if __STDC_VERSION__ < 199901L
242# define inline
243# endif
205#endif 244#endif
206 245
207#define expect_false(expr) expect ((expr) != 0, 0) 246#define expect_false(expr) expect ((expr) != 0, 0)
208#define expect_true(expr) expect ((expr) != 0, 1) 247#define expect_true(expr) expect ((expr) != 0, 1)
248#define inline_size static inline
249
250#if EV_MINIMAL
251# define inline_speed static noinline
252#else
253# define inline_speed static inline
254#endif
209 255
210#define NUMPRI (EV_MAXPRI - EV_MINPRI + 1) 256#define NUMPRI (EV_MAXPRI - EV_MINPRI + 1)
211#define ABSPRI(w) ((w)->priority - EV_MINPRI) 257#define ABSPRI(w) (((W)w)->priority - EV_MINPRI)
212 258
213#define EMPTY0 /* required for microsofts broken pseudo-c compiler */ 259#define EMPTY /* required for microsofts broken pseudo-c compiler */
214#define EMPTY2(a,b) /* used to suppress some warnings */ 260#define EMPTY2(a,b) /* used to suppress some warnings */
215 261
216typedef ev_watcher *W; 262typedef ev_watcher *W;
217typedef ev_watcher_list *WL; 263typedef ev_watcher_list *WL;
218typedef ev_watcher_time *WT; 264typedef ev_watcher_time *WT;
254ev_set_allocator (void *(*cb)(void *ptr, long size)) 300ev_set_allocator (void *(*cb)(void *ptr, long size))
255{ 301{
256 alloc = cb; 302 alloc = cb;
257} 303}
258 304
259static void * 305inline_speed void *
260ev_realloc (void *ptr, long size) 306ev_realloc (void *ptr, long size)
261{ 307{
262 ptr = alloc ? alloc (ptr, size) : realloc (ptr, size); 308 ptr = alloc ? alloc (ptr, size) : realloc (ptr, size);
263 309
264 if (!ptr && size) 310 if (!ptr && size)
288typedef struct 334typedef struct
289{ 335{
290 W w; 336 W w;
291 int events; 337 int events;
292} ANPENDING; 338} ANPENDING;
339
340#if EV_USE_INOTIFY
341typedef struct
342{
343 WL head;
344} ANFS;
345#endif
293 346
294#if EV_MULTIPLICITY 347#if EV_MULTIPLICITY
295 348
296 struct ev_loop 349 struct ev_loop
297 { 350 {
354{ 407{
355 return ev_rt_now; 408 return ev_rt_now;
356} 409}
357#endif 410#endif
358 411
359#define array_roundsize(type,n) (((n) | 4) & ~3) 412int inline_size
413array_nextsize (int elem, int cur, int cnt)
414{
415 int ncur = cur + 1;
416
417 do
418 ncur <<= 1;
419 while (cnt > ncur);
420
421 /* if size > 4096, round to 4096 - 4 * longs to accomodate malloc overhead */
422 if (elem * ncur > 4096)
423 {
424 ncur *= elem;
425 ncur = (ncur + elem + 4095 + sizeof (void *) * 4) & ~4095;
426 ncur = ncur - sizeof (void *) * 4;
427 ncur /= elem;
428 }
429
430 return ncur;
431}
432
433static noinline void *
434array_realloc (int elem, void *base, int *cur, int cnt)
435{
436 *cur = array_nextsize (elem, *cur, cnt);
437 return ev_realloc (base, elem * *cur);
438}
360 439
361#define array_needsize(type,base,cur,cnt,init) \ 440#define array_needsize(type,base,cur,cnt,init) \
362 if (expect_false ((cnt) > cur)) \ 441 if (expect_false ((cnt) > (cur))) \
363 { \ 442 { \
364 int newcnt = cur; \ 443 int ocur_ = (cur); \
365 do \ 444 (base) = (type *)array_realloc \
366 { \ 445 (sizeof (type), (base), &(cur), (cnt)); \
367 newcnt = array_roundsize (type, newcnt << 1); \ 446 init ((base) + (ocur_), (cur) - ocur_); \
368 } \
369 while ((cnt) > newcnt); \
370 \
371 base = (type *)ev_realloc (base, sizeof (type) * (newcnt));\
372 init (base + cur, newcnt - cur); \
373 cur = newcnt; \
374 } 447 }
375 448
449#if 0
376#define array_slim(type,stem) \ 450#define array_slim(type,stem) \
377 if (stem ## max < array_roundsize (stem ## cnt >> 2)) \ 451 if (stem ## max < array_roundsize (stem ## cnt >> 2)) \
378 { \ 452 { \
379 stem ## max = array_roundsize (stem ## cnt >> 1); \ 453 stem ## max = array_roundsize (stem ## cnt >> 1); \
380 base = (type *)ev_realloc (base, sizeof (type) * (stem ## max));\ 454 base = (type *)ev_realloc (base, sizeof (type) * (stem ## max));\
381 fprintf (stderr, "slimmed down " # stem " to %d\n", stem ## max);/*D*/\ 455 fprintf (stderr, "slimmed down " # stem " to %d\n", stem ## max);/*D*/\
382 } 456 }
457#endif
383 458
384#define array_free(stem, idx) \ 459#define array_free(stem, idx) \
385 ev_free (stem ## s idx); stem ## cnt idx = stem ## max idx = 0; 460 ev_free (stem ## s idx); stem ## cnt idx = stem ## max idx = 0;
386 461
387/*****************************************************************************/ 462/*****************************************************************************/
388 463
389void noinline 464void noinline
390ev_feed_event (EV_P_ void *w, int revents) 465ev_feed_event (EV_P_ void *w, int revents)
391{ 466{
392 W w_ = (W)w; 467 W w_ = (W)w;
468 int pri = ABSPRI (w_);
393 469
394 if (expect_false (w_->pending)) 470 if (expect_false (w_->pending))
471 pendings [pri][w_->pending - 1].events |= revents;
472 else
395 { 473 {
474 w_->pending = ++pendingcnt [pri];
475 array_needsize (ANPENDING, pendings [pri], pendingmax [pri], w_->pending, EMPTY2);
476 pendings [pri][w_->pending - 1].w = w_;
396 pendings [ABSPRI (w_)][w_->pending - 1].events |= revents; 477 pendings [pri][w_->pending - 1].events = revents;
397 return;
398 } 478 }
399
400 w_->pending = ++pendingcnt [ABSPRI (w_)];
401 array_needsize (ANPENDING, pendings [ABSPRI (w_)], pendingmax [ABSPRI (w_)], pendingcnt [ABSPRI (w_)], EMPTY2);
402 pendings [ABSPRI (w_)][w_->pending - 1].w = w_;
403 pendings [ABSPRI (w_)][w_->pending - 1].events = revents;
404} 479}
405 480
406void inline_size 481void inline_speed
407queue_events (EV_P_ W *events, int eventcnt, int type) 482queue_events (EV_P_ W *events, int eventcnt, int type)
408{ 483{
409 int i; 484 int i;
410 485
411 for (i = 0; i < eventcnt; ++i) 486 for (i = 0; i < eventcnt; ++i)
443} 518}
444 519
445void 520void
446ev_feed_fd_event (EV_P_ int fd, int revents) 521ev_feed_fd_event (EV_P_ int fd, int revents)
447{ 522{
523 if (fd >= 0 && fd < anfdmax)
448 fd_event (EV_A_ fd, revents); 524 fd_event (EV_A_ fd, revents);
449} 525}
450 526
451void inline_size 527void inline_size
452fd_reify (EV_P) 528fd_reify (EV_P)
453{ 529{
481 557
482 fdchangecnt = 0; 558 fdchangecnt = 0;
483} 559}
484 560
485void inline_size 561void inline_size
486fd_change (EV_P_ int fd) 562fd_change (EV_P_ int fd, int flags)
487{ 563{
488 if (expect_false (anfds [fd].reify)) 564 unsigned char reify = anfds [fd].reify;
489 return;
490
491 anfds [fd].reify = 1; 565 anfds [fd].reify |= flags | 1;
492 566
567 if (expect_true (!reify))
568 {
493 ++fdchangecnt; 569 ++fdchangecnt;
494 array_needsize (int, fdchanges, fdchangemax, fdchangecnt, EMPTY2); 570 array_needsize (int, fdchanges, fdchangemax, fdchangecnt, EMPTY2);
495 fdchanges [fdchangecnt - 1] = fd; 571 fdchanges [fdchangecnt - 1] = fd;
572 }
496} 573}
497 574
498void inline_speed 575void inline_speed
499fd_kill (EV_P_ int fd) 576fd_kill (EV_P_ int fd)
500{ 577{
547static void noinline 624static void noinline
548fd_rearm_all (EV_P) 625fd_rearm_all (EV_P)
549{ 626{
550 int fd; 627 int fd;
551 628
552 /* this should be highly optimised to not do anything but set a flag */
553 for (fd = 0; fd < anfdmax; ++fd) 629 for (fd = 0; fd < anfdmax; ++fd)
554 if (anfds [fd].events) 630 if (anfds [fd].events)
555 { 631 {
556 anfds [fd].events = 0; 632 anfds [fd].events = 0;
557 fd_change (EV_A_ fd); 633 fd_change (EV_A_ fd, EV_IOFDSET);
558 } 634 }
559} 635}
560 636
561/*****************************************************************************/ 637/*****************************************************************************/
562 638
563void inline_speed 639void inline_speed
564upheap (WT *heap, int k) 640upheap (WT *heap, int k)
565{ 641{
566 WT w = heap [k]; 642 WT w = heap [k];
567 643
568 while (k && heap [k >> 1]->at > w->at) 644 while (k)
569 { 645 {
646 int p = (k - 1) >> 1;
647
648 if (heap [p]->at <= w->at)
649 break;
650
570 heap [k] = heap [k >> 1]; 651 heap [k] = heap [p];
571 ((W)heap [k])->active = k + 1; 652 ((W)heap [k])->active = k + 1;
572 k >>= 1; 653 k = p;
573 } 654 }
574 655
575 heap [k] = w; 656 heap [k] = w;
576 ((W)heap [k])->active = k + 1; 657 ((W)heap [k])->active = k + 1;
577
578} 658}
579 659
580void inline_speed 660void inline_speed
581downheap (WT *heap, int N, int k) 661downheap (WT *heap, int N, int k)
582{ 662{
583 WT w = heap [k]; 663 WT w = heap [k];
584 664
585 while (k < (N >> 1)) 665 for (;;)
586 { 666 {
587 int j = k << 1; 667 int c = (k << 1) + 1;
588 668
589 if (j + 1 < N && heap [j]->at > heap [j + 1]->at) 669 if (c >= N)
590 ++j;
591
592 if (w->at <= heap [j]->at)
593 break; 670 break;
594 671
672 c += c + 1 < N && heap [c]->at > heap [c + 1]->at
673 ? 1 : 0;
674
675 if (w->at <= heap [c]->at)
676 break;
677
595 heap [k] = heap [j]; 678 heap [k] = heap [c];
596 ((W)heap [k])->active = k + 1; 679 ((W)heap [k])->active = k + 1;
680
597 k = j; 681 k = c;
598 } 682 }
599 683
600 heap [k] = w; 684 heap [k] = w;
601 ((W)heap [k])->active = k + 1; 685 ((W)heap [k])->active = k + 1;
602} 686}
684 for (signum = signalmax; signum--; ) 768 for (signum = signalmax; signum--; )
685 if (signals [signum].gotsig) 769 if (signals [signum].gotsig)
686 ev_feed_signal_event (EV_A_ signum + 1); 770 ev_feed_signal_event (EV_A_ signum + 1);
687} 771}
688 772
689void inline_size 773void inline_speed
690fd_intern (int fd) 774fd_intern (int fd)
691{ 775{
692#ifdef _WIN32 776#ifdef _WIN32
693 int arg = 1; 777 int arg = 1;
694 ioctlsocket (_get_osfhandle (fd), FIONBIO, &arg); 778 ioctlsocket (_get_osfhandle (fd), FIONBIO, &arg);
709 ev_unref (EV_A); /* child watcher should not keep loop alive */ 793 ev_unref (EV_A); /* child watcher should not keep loop alive */
710} 794}
711 795
712/*****************************************************************************/ 796/*****************************************************************************/
713 797
714static ev_child *childs [PID_HASHSIZE]; 798static WL childs [EV_PID_HASHSIZE];
715 799
716#ifndef _WIN32 800#ifndef _WIN32
717 801
718static ev_signal childev; 802static ev_signal childev;
803
804void inline_speed
805child_reap (EV_P_ ev_signal *sw, int chain, int pid, int status)
806{
807 ev_child *w;
808
809 for (w = (ev_child *)childs [chain & (EV_PID_HASHSIZE - 1)]; w; w = (ev_child *)((WL)w)->next)
810 if (w->pid == pid || !w->pid)
811 {
812 ev_set_priority (w, ev_priority (sw)); /* need to do it *now* */
813 w->rpid = pid;
814 w->rstatus = status;
815 ev_feed_event (EV_A_ (W)w, EV_CHILD);
816 }
817}
719 818
720#ifndef WCONTINUED 819#ifndef WCONTINUED
721# define WCONTINUED 0 820# define WCONTINUED 0
722#endif 821#endif
723 822
724void inline_speed
725child_reap (EV_P_ ev_signal *sw, int chain, int pid, int status)
726{
727 ev_child *w;
728
729 for (w = (ev_child *)childs [chain & (PID_HASHSIZE - 1)]; w; w = (ev_child *)((WL)w)->next)
730 if (w->pid == pid || !w->pid)
731 {
732 ev_priority (w) = ev_priority (sw); /* need to do it *now* */
733 w->rpid = pid;
734 w->rstatus = status;
735 ev_feed_event (EV_A_ (W)w, EV_CHILD);
736 }
737}
738
739static void 823static void
740childcb (EV_P_ ev_signal *sw, int revents) 824childcb (EV_P_ ev_signal *sw, int revents)
741{ 825{
742 int pid, status; 826 int pid, status;
743 827
828 /* some systems define WCONTINUED but then fail to support it (linux 2.4) */
744 if (0 < (pid = waitpid (-1, &status, WNOHANG | WUNTRACED | WCONTINUED))) 829 if (0 >= (pid = waitpid (-1, &status, WNOHANG | WUNTRACED | WCONTINUED)))
745 { 830 if (!WCONTINUED
831 || errno != EINVAL
832 || 0 >= (pid = waitpid (-1, &status, WNOHANG | WUNTRACED)))
833 return;
834
746 /* make sure we are called again until all childs have been reaped */ 835 /* make sure we are called again until all childs have been reaped */
747 /* we need to do it this way so that the callback gets called before we continue */ 836 /* we need to do it this way so that the callback gets called before we continue */
748 ev_feed_event (EV_A_ (W)sw, EV_SIGNAL); 837 ev_feed_event (EV_A_ (W)sw, EV_SIGNAL);
749 838
750 child_reap (EV_A_ sw, pid, pid, status); 839 child_reap (EV_A_ sw, pid, pid, status);
840 if (EV_PID_HASHSIZE > 1)
751 child_reap (EV_A_ sw, 0, pid, status); /* this might trigger a watcher twice, but feed_event catches that */ 841 child_reap (EV_A_ sw, 0, pid, status); /* this might trigger a watcher twice, but feed_event catches that */
752 }
753} 842}
754 843
755#endif 844#endif
756 845
757/*****************************************************************************/ 846/*****************************************************************************/
840ev_backend (EV_P) 929ev_backend (EV_P)
841{ 930{
842 return backend; 931 return backend;
843} 932}
844 933
845static void 934unsigned int
935ev_loop_count (EV_P)
936{
937 return loop_count;
938}
939
940static void noinline
846loop_init (EV_P_ unsigned int flags) 941loop_init (EV_P_ unsigned int flags)
847{ 942{
848 if (!backend) 943 if (!backend)
849 { 944 {
850#if EV_USE_MONOTONIC 945#if EV_USE_MONOTONIC
858 ev_rt_now = ev_time (); 953 ev_rt_now = ev_time ();
859 mn_now = get_clock (); 954 mn_now = get_clock ();
860 now_floor = mn_now; 955 now_floor = mn_now;
861 rtmn_diff = ev_rt_now - mn_now; 956 rtmn_diff = ev_rt_now - mn_now;
862 957
958 /* pid check not overridable via env */
959#ifndef _WIN32
960 if (flags & EVFLAG_FORKCHECK)
961 curpid = getpid ();
962#endif
963
863 if (!(flags & EVFLAG_NOENV) 964 if (!(flags & EVFLAG_NOENV)
864 && !enable_secure () 965 && !enable_secure ()
865 && getenv ("LIBEV_FLAGS")) 966 && getenv ("LIBEV_FLAGS"))
866 flags = atoi (getenv ("LIBEV_FLAGS")); 967 flags = atoi (getenv ("LIBEV_FLAGS"));
867 968
868 if (!(flags & 0x0000ffffUL)) 969 if (!(flags & 0x0000ffffUL))
869 flags |= ev_recommended_backends (); 970 flags |= ev_recommended_backends ();
870 971
871 backend = 0; 972 backend = 0;
973 backend_fd = -1;
974#if EV_USE_INOTIFY
975 fs_fd = -2;
976#endif
977
872#if EV_USE_PORT 978#if EV_USE_PORT
873 if (!backend && (flags & EVBACKEND_PORT )) backend = port_init (EV_A_ flags); 979 if (!backend && (flags & EVBACKEND_PORT )) backend = port_init (EV_A_ flags);
874#endif 980#endif
875#if EV_USE_KQUEUE 981#if EV_USE_KQUEUE
876 if (!backend && (flags & EVBACKEND_KQUEUE)) backend = kqueue_init (EV_A_ flags); 982 if (!backend && (flags & EVBACKEND_KQUEUE)) backend = kqueue_init (EV_A_ flags);
888 ev_init (&sigev, sigcb); 994 ev_init (&sigev, sigcb);
889 ev_set_priority (&sigev, EV_MAXPRI); 995 ev_set_priority (&sigev, EV_MAXPRI);
890 } 996 }
891} 997}
892 998
893static void 999static void noinline
894loop_destroy (EV_P) 1000loop_destroy (EV_P)
895{ 1001{
896 int i; 1002 int i;
1003
1004#if EV_USE_INOTIFY
1005 if (fs_fd >= 0)
1006 close (fs_fd);
1007#endif
1008
1009 if (backend_fd >= 0)
1010 close (backend_fd);
897 1011
898#if EV_USE_PORT 1012#if EV_USE_PORT
899 if (backend == EVBACKEND_PORT ) port_destroy (EV_A); 1013 if (backend == EVBACKEND_PORT ) port_destroy (EV_A);
900#endif 1014#endif
901#if EV_USE_KQUEUE 1015#if EV_USE_KQUEUE
910#if EV_USE_SELECT 1024#if EV_USE_SELECT
911 if (backend == EVBACKEND_SELECT) select_destroy (EV_A); 1025 if (backend == EVBACKEND_SELECT) select_destroy (EV_A);
912#endif 1026#endif
913 1027
914 for (i = NUMPRI; i--; ) 1028 for (i = NUMPRI; i--; )
1029 {
915 array_free (pending, [i]); 1030 array_free (pending, [i]);
1031#if EV_IDLE_ENABLE
1032 array_free (idle, [i]);
1033#endif
1034 }
916 1035
917 /* have to use the microsoft-never-gets-it-right macro */ 1036 /* have to use the microsoft-never-gets-it-right macro */
918 array_free (fdchange, EMPTY0); 1037 array_free (fdchange, EMPTY);
919 array_free (timer, EMPTY0); 1038 array_free (timer, EMPTY);
920#if EV_PERIODIC_ENABLE 1039#if EV_PERIODIC_ENABLE
921 array_free (periodic, EMPTY0); 1040 array_free (periodic, EMPTY);
922#endif 1041#endif
923 array_free (idle, EMPTY0);
924 array_free (prepare, EMPTY0); 1042 array_free (prepare, EMPTY);
925 array_free (check, EMPTY0); 1043 array_free (check, EMPTY);
926 1044
927 backend = 0; 1045 backend = 0;
928} 1046}
929 1047
930static void 1048void inline_size infy_fork (EV_P);
1049
1050void inline_size
931loop_fork (EV_P) 1051loop_fork (EV_P)
932{ 1052{
933#if EV_USE_PORT 1053#if EV_USE_PORT
934 if (backend == EVBACKEND_PORT ) port_fork (EV_A); 1054 if (backend == EVBACKEND_PORT ) port_fork (EV_A);
935#endif 1055#endif
936#if EV_USE_KQUEUE 1056#if EV_USE_KQUEUE
937 if (backend == EVBACKEND_KQUEUE) kqueue_fork (EV_A); 1057 if (backend == EVBACKEND_KQUEUE) kqueue_fork (EV_A);
938#endif 1058#endif
939#if EV_USE_EPOLL 1059#if EV_USE_EPOLL
940 if (backend == EVBACKEND_EPOLL ) epoll_fork (EV_A); 1060 if (backend == EVBACKEND_EPOLL ) epoll_fork (EV_A);
1061#endif
1062#if EV_USE_INOTIFY
1063 infy_fork (EV_A);
941#endif 1064#endif
942 1065
943 if (ev_is_active (&sigev)) 1066 if (ev_is_active (&sigev))
944 { 1067 {
945 /* default loop */ 1068 /* default loop */
1061 postfork = 1; 1184 postfork = 1;
1062} 1185}
1063 1186
1064/*****************************************************************************/ 1187/*****************************************************************************/
1065 1188
1066int inline_size 1189void
1067any_pending (EV_P) 1190ev_invoke (EV_P_ void *w, int revents)
1068{ 1191{
1069 int pri; 1192 EV_CB_INVOKE ((W)w, revents);
1070
1071 for (pri = NUMPRI; pri--; )
1072 if (pendingcnt [pri])
1073 return 1;
1074
1075 return 0;
1076} 1193}
1077 1194
1078void inline_speed 1195void inline_speed
1079call_pending (EV_P) 1196call_pending (EV_P)
1080{ 1197{
1085 { 1202 {
1086 ANPENDING *p = pendings [pri] + --pendingcnt [pri]; 1203 ANPENDING *p = pendings [pri] + --pendingcnt [pri];
1087 1204
1088 if (expect_true (p->w)) 1205 if (expect_true (p->w))
1089 { 1206 {
1090 assert (("non-pending watcher on pending list", p->w->pending)); 1207 /*assert (("non-pending watcher on pending list", p->w->pending));*/
1091 1208
1092 p->w->pending = 0; 1209 p->w->pending = 0;
1093 EV_CB_INVOKE (p->w, p->events); 1210 EV_CB_INVOKE (p->w, p->events);
1094 } 1211 }
1095 } 1212 }
1098void inline_size 1215void inline_size
1099timers_reify (EV_P) 1216timers_reify (EV_P)
1100{ 1217{
1101 while (timercnt && ((WT)timers [0])->at <= mn_now) 1218 while (timercnt && ((WT)timers [0])->at <= mn_now)
1102 { 1219 {
1103 ev_timer *w = timers [0]; 1220 ev_timer *w = (ev_timer *)timers [0];
1104 1221
1105 assert (("inactive timer on timer heap detected", ev_is_active (w))); 1222 /*assert (("inactive timer on timer heap detected", ev_is_active (w)));*/
1106 1223
1107 /* first reschedule or stop timer */ 1224 /* first reschedule or stop timer */
1108 if (w->repeat) 1225 if (w->repeat)
1109 { 1226 {
1110 assert (("negative ev_timer repeat value found while processing timers", w->repeat > 0.)); 1227 assert (("negative ev_timer repeat value found while processing timers", w->repeat > 0.));
1111 1228
1112 ((WT)w)->at += w->repeat; 1229 ((WT)w)->at += w->repeat;
1113 if (((WT)w)->at < mn_now) 1230 if (((WT)w)->at < mn_now)
1114 ((WT)w)->at = mn_now; 1231 ((WT)w)->at = mn_now;
1115 1232
1116 downheap ((WT *)timers, timercnt, 0); 1233 downheap (timers, timercnt, 0);
1117 } 1234 }
1118 else 1235 else
1119 ev_timer_stop (EV_A_ w); /* nonrepeating: stop timer */ 1236 ev_timer_stop (EV_A_ w); /* nonrepeating: stop timer */
1120 1237
1121 ev_feed_event (EV_A_ (W)w, EV_TIMEOUT); 1238 ev_feed_event (EV_A_ (W)w, EV_TIMEOUT);
1126void inline_size 1243void inline_size
1127periodics_reify (EV_P) 1244periodics_reify (EV_P)
1128{ 1245{
1129 while (periodiccnt && ((WT)periodics [0])->at <= ev_rt_now) 1246 while (periodiccnt && ((WT)periodics [0])->at <= ev_rt_now)
1130 { 1247 {
1131 ev_periodic *w = periodics [0]; 1248 ev_periodic *w = (ev_periodic *)periodics [0];
1132 1249
1133 assert (("inactive timer on periodic heap detected", ev_is_active (w))); 1250 /*assert (("inactive timer on periodic heap detected", ev_is_active (w)));*/
1134 1251
1135 /* first reschedule or stop timer */ 1252 /* first reschedule or stop timer */
1136 if (w->reschedule_cb) 1253 if (w->reschedule_cb)
1137 { 1254 {
1138 ((WT)w)->at = w->reschedule_cb (w, ev_rt_now + 0.0001); 1255 ((WT)w)->at = w->reschedule_cb (w, ev_rt_now + TIME_EPSILON);
1139 assert (("ev_periodic reschedule callback returned time in the past", ((WT)w)->at > ev_rt_now)); 1256 assert (("ev_periodic reschedule callback returned time in the past", ((WT)w)->at > ev_rt_now));
1140 downheap ((WT *)periodics, periodiccnt, 0); 1257 downheap (periodics, periodiccnt, 0);
1141 } 1258 }
1142 else if (w->interval) 1259 else if (w->interval)
1143 { 1260 {
1144 ((WT)w)->at += floor ((ev_rt_now - ((WT)w)->at) / w->interval + 1.) * w->interval; 1261 ((WT)w)->at = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval;
1262 if (((WT)w)->at - ev_rt_now <= TIME_EPSILON) ((WT)w)->at += w->interval;
1145 assert (("ev_periodic timeout in the past detected while processing timers, negative interval?", ((WT)w)->at > ev_rt_now)); 1263 assert (("ev_periodic timeout in the past detected while processing timers, negative interval?", ((WT)w)->at > ev_rt_now));
1146 downheap ((WT *)periodics, periodiccnt, 0); 1264 downheap (periodics, periodiccnt, 0);
1147 } 1265 }
1148 else 1266 else
1149 ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */ 1267 ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */
1150 1268
1151 ev_feed_event (EV_A_ (W)w, EV_PERIODIC); 1269 ev_feed_event (EV_A_ (W)w, EV_PERIODIC);
1158 int i; 1276 int i;
1159 1277
1160 /* adjust periodics after time jump */ 1278 /* adjust periodics after time jump */
1161 for (i = 0; i < periodiccnt; ++i) 1279 for (i = 0; i < periodiccnt; ++i)
1162 { 1280 {
1163 ev_periodic *w = periodics [i]; 1281 ev_periodic *w = (ev_periodic *)periodics [i];
1164 1282
1165 if (w->reschedule_cb) 1283 if (w->reschedule_cb)
1166 ((WT)w)->at = w->reschedule_cb (w, ev_rt_now); 1284 ((WT)w)->at = w->reschedule_cb (w, ev_rt_now);
1167 else if (w->interval) 1285 else if (w->interval)
1168 ((WT)w)->at += ceil ((ev_rt_now - ((WT)w)->at) / w->interval) * w->interval; 1286 ((WT)w)->at = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval;
1169 } 1287 }
1170 1288
1171 /* now rebuild the heap */ 1289 /* now rebuild the heap */
1172 for (i = periodiccnt >> 1; i--; ) 1290 for (i = periodiccnt >> 1; i--; )
1173 downheap ((WT *)periodics, periodiccnt, i); 1291 downheap (periodics, periodiccnt, i);
1174} 1292}
1175#endif 1293#endif
1176 1294
1295#if EV_IDLE_ENABLE
1177int inline_size 1296void inline_size
1178time_update_monotonic (EV_P) 1297idle_reify (EV_P)
1179{ 1298{
1299 if (expect_false (idleall))
1300 {
1301 int pri;
1302
1303 for (pri = NUMPRI; pri--; )
1304 {
1305 if (pendingcnt [pri])
1306 break;
1307
1308 if (idlecnt [pri])
1309 {
1310 queue_events (EV_A_ (W *)idles [pri], idlecnt [pri], EV_IDLE);
1311 break;
1312 }
1313 }
1314 }
1315}
1316#endif
1317
1318void inline_speed
1319time_update (EV_P_ ev_tstamp max_block)
1320{
1321 int i;
1322
1323#if EV_USE_MONOTONIC
1324 if (expect_true (have_monotonic))
1325 {
1326 ev_tstamp odiff = rtmn_diff;
1327
1180 mn_now = get_clock (); 1328 mn_now = get_clock ();
1181 1329
1330 /* only fetch the realtime clock every 0.5*MIN_TIMEJUMP seconds */
1331 /* interpolate in the meantime */
1182 if (expect_true (mn_now - now_floor < MIN_TIMEJUMP * .5)) 1332 if (expect_true (mn_now - now_floor < MIN_TIMEJUMP * .5))
1183 { 1333 {
1184 ev_rt_now = rtmn_diff + mn_now; 1334 ev_rt_now = rtmn_diff + mn_now;
1185 return 0; 1335 return;
1186 } 1336 }
1187 else 1337
1188 {
1189 now_floor = mn_now; 1338 now_floor = mn_now;
1190 ev_rt_now = ev_time (); 1339 ev_rt_now = ev_time ();
1191 return 1;
1192 }
1193}
1194 1340
1195void inline_size 1341 /* loop a few times, before making important decisions.
1196time_update (EV_P) 1342 * on the choice of "4": one iteration isn't enough,
1197{ 1343 * in case we get preempted during the calls to
1198 int i; 1344 * ev_time and get_clock. a second call is almost guaranteed
1199 1345 * to succeed in that case, though. and looping a few more times
1200#if EV_USE_MONOTONIC 1346 * doesn't hurt either as we only do this on time-jumps or
1201 if (expect_true (have_monotonic)) 1347 * in the unlikely event of having been preempted here.
1202 { 1348 */
1203 if (time_update_monotonic (EV_A)) 1349 for (i = 4; --i; )
1204 { 1350 {
1205 ev_tstamp odiff = rtmn_diff;
1206
1207 /* loop a few times, before making important decisions.
1208 * on the choice of "4": one iteration isn't enough,
1209 * in case we get preempted during the calls to
1210 * ev_time and get_clock. a second call is almost guarenteed
1211 * to succeed in that case, though. and looping a few more times
1212 * doesn't hurt either as we only do this on time-jumps or
1213 * in the unlikely event of getting preempted here.
1214 */
1215 for (i = 4; --i; )
1216 {
1217 rtmn_diff = ev_rt_now - mn_now; 1351 rtmn_diff = ev_rt_now - mn_now;
1218 1352
1219 if (fabs (odiff - rtmn_diff) < MIN_TIMEJUMP) 1353 if (fabs (odiff - rtmn_diff) < MIN_TIMEJUMP)
1220 return; /* all is well */ 1354 return; /* all is well */
1221 1355
1222 ev_rt_now = ev_time (); 1356 ev_rt_now = ev_time ();
1223 mn_now = get_clock (); 1357 mn_now = get_clock ();
1224 now_floor = mn_now; 1358 now_floor = mn_now;
1225 } 1359 }
1226 1360
1227# if EV_PERIODIC_ENABLE 1361# if EV_PERIODIC_ENABLE
1228 periodics_reschedule (EV_A); 1362 periodics_reschedule (EV_A);
1229# endif 1363# endif
1230 /* no timer adjustment, as the monotonic clock doesn't jump */ 1364 /* no timer adjustment, as the monotonic clock doesn't jump */
1231 /* timers_reschedule (EV_A_ rtmn_diff - odiff) */ 1365 /* timers_reschedule (EV_A_ rtmn_diff - odiff) */
1232 }
1233 } 1366 }
1234 else 1367 else
1235#endif 1368#endif
1236 { 1369 {
1237 ev_rt_now = ev_time (); 1370 ev_rt_now = ev_time ();
1238 1371
1239 if (expect_false (mn_now > ev_rt_now || mn_now < ev_rt_now - MAX_BLOCKTIME - MIN_TIMEJUMP)) 1372 if (expect_false (mn_now > ev_rt_now || ev_rt_now > mn_now + max_block + MIN_TIMEJUMP))
1240 { 1373 {
1241#if EV_PERIODIC_ENABLE 1374#if EV_PERIODIC_ENABLE
1242 periodics_reschedule (EV_A); 1375 periodics_reschedule (EV_A);
1243#endif 1376#endif
1244
1245 /* adjust timers. this is easy, as the offset is the same for all */ 1377 /* adjust timers. this is easy, as the offset is the same for all of them */
1246 for (i = 0; i < timercnt; ++i) 1378 for (i = 0; i < timercnt; ++i)
1247 ((WT)timers [i])->at += ev_rt_now - mn_now; 1379 ((WT)timers [i])->at += ev_rt_now - mn_now;
1248 } 1380 }
1249 1381
1250 mn_now = ev_rt_now; 1382 mn_now = ev_rt_now;
1270{ 1402{
1271 loop_done = flags & (EVLOOP_ONESHOT | EVLOOP_NONBLOCK) 1403 loop_done = flags & (EVLOOP_ONESHOT | EVLOOP_NONBLOCK)
1272 ? EVUNLOOP_ONE 1404 ? EVUNLOOP_ONE
1273 : EVUNLOOP_CANCEL; 1405 : EVUNLOOP_CANCEL;
1274 1406
1275 while (activecnt) 1407 call_pending (EV_A); /* in case we recurse, ensure ordering stays nice and clean */
1408
1409 do
1276 { 1410 {
1411#ifndef _WIN32
1412 if (expect_false (curpid)) /* penalise the forking check even more */
1413 if (expect_false (getpid () != curpid))
1414 {
1415 curpid = getpid ();
1416 postfork = 1;
1417 }
1418#endif
1419
1420#if EV_FORK_ENABLE
1421 /* we might have forked, so queue fork handlers */
1422 if (expect_false (postfork))
1423 if (forkcnt)
1424 {
1425 queue_events (EV_A_ (W *)forks, forkcnt, EV_FORK);
1426 call_pending (EV_A);
1427 }
1428#endif
1429
1277 /* queue check watchers (and execute them) */ 1430 /* queue prepare watchers (and execute them) */
1278 if (expect_false (preparecnt)) 1431 if (expect_false (preparecnt))
1279 { 1432 {
1280 queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE); 1433 queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE);
1281 call_pending (EV_A); 1434 call_pending (EV_A);
1282 } 1435 }
1283 1436
1437 if (expect_false (!activecnt))
1438 break;
1439
1284 /* we might have forked, so reify kernel state if necessary */ 1440 /* we might have forked, so reify kernel state if necessary */
1285 if (expect_false (postfork)) 1441 if (expect_false (postfork))
1286 loop_fork (EV_A); 1442 loop_fork (EV_A);
1287 1443
1288 /* update fd-related kernel structures */ 1444 /* update fd-related kernel structures */
1289 fd_reify (EV_A); 1445 fd_reify (EV_A);
1290 1446
1291 /* calculate blocking time */ 1447 /* calculate blocking time */
1292 { 1448 {
1293 double block; 1449 ev_tstamp block;
1294 1450
1295 if (flags & EVLOOP_NONBLOCK || idlecnt) 1451 if (expect_false (flags & EVLOOP_NONBLOCK || idleall || !activecnt))
1296 block = 0.; /* do not block at all */ 1452 block = 0.; /* do not block at all */
1297 else 1453 else
1298 { 1454 {
1299 /* update time to cancel out callback processing overhead */ 1455 /* update time to cancel out callback processing overhead */
1300#if EV_USE_MONOTONIC
1301 if (expect_true (have_monotonic))
1302 time_update_monotonic (EV_A); 1456 time_update (EV_A_ 1e100);
1303 else
1304#endif
1305 {
1306 ev_rt_now = ev_time ();
1307 mn_now = ev_rt_now;
1308 }
1309 1457
1310 block = MAX_BLOCKTIME; 1458 block = MAX_BLOCKTIME;
1311 1459
1312 if (timercnt) 1460 if (timercnt)
1313 { 1461 {
1324#endif 1472#endif
1325 1473
1326 if (expect_false (block < 0.)) block = 0.; 1474 if (expect_false (block < 0.)) block = 0.;
1327 } 1475 }
1328 1476
1477 ++loop_count;
1329 backend_poll (EV_A_ block); 1478 backend_poll (EV_A_ block);
1479
1480 /* update ev_rt_now, do magic */
1481 time_update (EV_A_ block);
1330 } 1482 }
1331
1332 /* update ev_rt_now, do magic */
1333 time_update (EV_A);
1334 1483
1335 /* queue pending timers and reschedule them */ 1484 /* queue pending timers and reschedule them */
1336 timers_reify (EV_A); /* relative timers called last */ 1485 timers_reify (EV_A); /* relative timers called last */
1337#if EV_PERIODIC_ENABLE 1486#if EV_PERIODIC_ENABLE
1338 periodics_reify (EV_A); /* absolute timers called first */ 1487 periodics_reify (EV_A); /* absolute timers called first */
1339#endif 1488#endif
1340 1489
1490#if EV_IDLE_ENABLE
1341 /* queue idle watchers unless other events are pending */ 1491 /* queue idle watchers unless other events are pending */
1342 if (idlecnt && !any_pending (EV_A)) 1492 idle_reify (EV_A);
1343 queue_events (EV_A_ (W *)idles, idlecnt, EV_IDLE); 1493#endif
1344 1494
1345 /* queue check watchers, to be executed first */ 1495 /* queue check watchers, to be executed first */
1346 if (expect_false (checkcnt)) 1496 if (expect_false (checkcnt))
1347 queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK); 1497 queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK);
1348 1498
1349 call_pending (EV_A); 1499 call_pending (EV_A);
1350 1500
1351 if (expect_false (loop_done))
1352 break;
1353 } 1501 }
1502 while (expect_true (activecnt && !loop_done));
1354 1503
1355 if (loop_done == EVUNLOOP_ONE) 1504 if (loop_done == EVUNLOOP_ONE)
1356 loop_done = EVUNLOOP_CANCEL; 1505 loop_done = EVUNLOOP_CANCEL;
1357} 1506}
1358 1507
1385 head = &(*head)->next; 1534 head = &(*head)->next;
1386 } 1535 }
1387} 1536}
1388 1537
1389void inline_speed 1538void inline_speed
1390ev_clear_pending (EV_P_ W w) 1539clear_pending (EV_P_ W w)
1391{ 1540{
1392 if (w->pending) 1541 if (w->pending)
1393 { 1542 {
1394 pendings [ABSPRI (w)][w->pending - 1].w = 0; 1543 pendings [ABSPRI (w)][w->pending - 1].w = 0;
1395 w->pending = 0; 1544 w->pending = 0;
1396 } 1545 }
1397} 1546}
1398 1547
1548int
1549ev_clear_pending (EV_P_ void *w)
1550{
1551 W w_ = (W)w;
1552 int pending = w_->pending;
1553
1554 if (expect_true (pending))
1555 {
1556 ANPENDING *p = pendings [ABSPRI (w_)] + pending - 1;
1557 w_->pending = 0;
1558 p->w = 0;
1559 return p->events;
1560 }
1561 else
1562 return 0;
1563}
1564
1565void inline_size
1566pri_adjust (EV_P_ W w)
1567{
1568 int pri = w->priority;
1569 pri = pri < EV_MINPRI ? EV_MINPRI : pri;
1570 pri = pri > EV_MAXPRI ? EV_MAXPRI : pri;
1571 w->priority = pri;
1572}
1573
1399void inline_speed 1574void inline_speed
1400ev_start (EV_P_ W w, int active) 1575ev_start (EV_P_ W w, int active)
1401{ 1576{
1402 if (w->priority < EV_MINPRI) w->priority = EV_MINPRI; 1577 pri_adjust (EV_A_ w);
1403 if (w->priority > EV_MAXPRI) w->priority = EV_MAXPRI;
1404
1405 w->active = active; 1578 w->active = active;
1406 ev_ref (EV_A); 1579 ev_ref (EV_A);
1407} 1580}
1408 1581
1409void inline_size 1582void inline_size
1413 w->active = 0; 1586 w->active = 0;
1414} 1587}
1415 1588
1416/*****************************************************************************/ 1589/*****************************************************************************/
1417 1590
1418void 1591void noinline
1419ev_io_start (EV_P_ ev_io *w) 1592ev_io_start (EV_P_ ev_io *w)
1420{ 1593{
1421 int fd = w->fd; 1594 int fd = w->fd;
1422 1595
1423 if (expect_false (ev_is_active (w))) 1596 if (expect_false (ev_is_active (w)))
1425 1598
1426 assert (("ev_io_start called with negative fd", fd >= 0)); 1599 assert (("ev_io_start called with negative fd", fd >= 0));
1427 1600
1428 ev_start (EV_A_ (W)w, 1); 1601 ev_start (EV_A_ (W)w, 1);
1429 array_needsize (ANFD, anfds, anfdmax, fd + 1, anfds_init); 1602 array_needsize (ANFD, anfds, anfdmax, fd + 1, anfds_init);
1430 wlist_add ((WL *)&anfds[fd].head, (WL)w); 1603 wlist_add (&anfds[fd].head, (WL)w);
1431 1604
1432 fd_change (EV_A_ fd); 1605 fd_change (EV_A_ fd, w->events & EV_IOFDSET);
1606 w->events &= ~ EV_IOFDSET;
1433} 1607}
1434 1608
1435void 1609void noinline
1436ev_io_stop (EV_P_ ev_io *w) 1610ev_io_stop (EV_P_ ev_io *w)
1437{ 1611{
1438 ev_clear_pending (EV_A_ (W)w); 1612 clear_pending (EV_A_ (W)w);
1439 if (expect_false (!ev_is_active (w))) 1613 if (expect_false (!ev_is_active (w)))
1440 return; 1614 return;
1441 1615
1442 assert (("ev_io_start called with illegal fd (must stay constant after start!)", w->fd >= 0 && w->fd < anfdmax)); 1616 assert (("ev_io_start called with illegal fd (must stay constant after start!)", w->fd >= 0 && w->fd < anfdmax));
1443 1617
1444 wlist_del ((WL *)&anfds[w->fd].head, (WL)w); 1618 wlist_del (&anfds[w->fd].head, (WL)w);
1445 ev_stop (EV_A_ (W)w); 1619 ev_stop (EV_A_ (W)w);
1446 1620
1447 fd_change (EV_A_ w->fd); 1621 fd_change (EV_A_ w->fd, 0);
1448} 1622}
1449 1623
1450void 1624void noinline
1451ev_timer_start (EV_P_ ev_timer *w) 1625ev_timer_start (EV_P_ ev_timer *w)
1452{ 1626{
1453 if (expect_false (ev_is_active (w))) 1627 if (expect_false (ev_is_active (w)))
1454 return; 1628 return;
1455 1629
1456 ((WT)w)->at += mn_now; 1630 ((WT)w)->at += mn_now;
1457 1631
1458 assert (("ev_timer_start called with negative timer repeat value", w->repeat >= 0.)); 1632 assert (("ev_timer_start called with negative timer repeat value", w->repeat >= 0.));
1459 1633
1460 ev_start (EV_A_ (W)w, ++timercnt); 1634 ev_start (EV_A_ (W)w, ++timercnt);
1461 array_needsize (ev_timer *, timers, timermax, timercnt, EMPTY2); 1635 array_needsize (WT, timers, timermax, timercnt, EMPTY2);
1462 timers [timercnt - 1] = w; 1636 timers [timercnt - 1] = (WT)w;
1463 upheap ((WT *)timers, timercnt - 1); 1637 upheap (timers, timercnt - 1);
1464 1638
1465 assert (("internal timer heap corruption", timers [((W)w)->active - 1] == w)); 1639 /*assert (("internal timer heap corruption", timers [((W)w)->active - 1] == w));*/
1466} 1640}
1467 1641
1468void 1642void noinline
1469ev_timer_stop (EV_P_ ev_timer *w) 1643ev_timer_stop (EV_P_ ev_timer *w)
1470{ 1644{
1471 ev_clear_pending (EV_A_ (W)w); 1645 clear_pending (EV_A_ (W)w);
1472 if (expect_false (!ev_is_active (w))) 1646 if (expect_false (!ev_is_active (w)))
1473 return; 1647 return;
1474 1648
1475 assert (("internal timer heap corruption", timers [((W)w)->active - 1] == w)); 1649 assert (("internal timer heap corruption", timers [((W)w)->active - 1] == (WT)w));
1476 1650
1651 {
1652 int active = ((W)w)->active;
1653
1477 if (expect_true (((W)w)->active < timercnt--)) 1654 if (expect_true (--active < --timercnt))
1478 { 1655 {
1479 timers [((W)w)->active - 1] = timers [timercnt]; 1656 timers [active] = timers [timercnt];
1480 adjustheap ((WT *)timers, timercnt, ((W)w)->active - 1); 1657 adjustheap (timers, timercnt, active);
1481 } 1658 }
1659 }
1482 1660
1483 ((WT)w)->at -= mn_now; 1661 ((WT)w)->at -= mn_now;
1484 1662
1485 ev_stop (EV_A_ (W)w); 1663 ev_stop (EV_A_ (W)w);
1486} 1664}
1487 1665
1488void 1666void noinline
1489ev_timer_again (EV_P_ ev_timer *w) 1667ev_timer_again (EV_P_ ev_timer *w)
1490{ 1668{
1491 if (ev_is_active (w)) 1669 if (ev_is_active (w))
1492 { 1670 {
1493 if (w->repeat) 1671 if (w->repeat)
1494 { 1672 {
1495 ((WT)w)->at = mn_now + w->repeat; 1673 ((WT)w)->at = mn_now + w->repeat;
1496 adjustheap ((WT *)timers, timercnt, ((W)w)->active - 1); 1674 adjustheap (timers, timercnt, ((W)w)->active - 1);
1497 } 1675 }
1498 else 1676 else
1499 ev_timer_stop (EV_A_ w); 1677 ev_timer_stop (EV_A_ w);
1500 } 1678 }
1501 else if (w->repeat) 1679 else if (w->repeat)
1504 ev_timer_start (EV_A_ w); 1682 ev_timer_start (EV_A_ w);
1505 } 1683 }
1506} 1684}
1507 1685
1508#if EV_PERIODIC_ENABLE 1686#if EV_PERIODIC_ENABLE
1509void 1687void noinline
1510ev_periodic_start (EV_P_ ev_periodic *w) 1688ev_periodic_start (EV_P_ ev_periodic *w)
1511{ 1689{
1512 if (expect_false (ev_is_active (w))) 1690 if (expect_false (ev_is_active (w)))
1513 return; 1691 return;
1514 1692
1516 ((WT)w)->at = w->reschedule_cb (w, ev_rt_now); 1694 ((WT)w)->at = w->reschedule_cb (w, ev_rt_now);
1517 else if (w->interval) 1695 else if (w->interval)
1518 { 1696 {
1519 assert (("ev_periodic_start called with negative interval value", w->interval >= 0.)); 1697 assert (("ev_periodic_start called with negative interval value", w->interval >= 0.));
1520 /* this formula differs from the one in periodic_reify because we do not always round up */ 1698 /* this formula differs from the one in periodic_reify because we do not always round up */
1521 ((WT)w)->at += ceil ((ev_rt_now - ((WT)w)->at) / w->interval) * w->interval; 1699 ((WT)w)->at = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval;
1522 } 1700 }
1701 else
1702 ((WT)w)->at = w->offset;
1523 1703
1524 ev_start (EV_A_ (W)w, ++periodiccnt); 1704 ev_start (EV_A_ (W)w, ++periodiccnt);
1525 array_needsize (ev_periodic *, periodics, periodicmax, periodiccnt, EMPTY2); 1705 array_needsize (WT, periodics, periodicmax, periodiccnt, EMPTY2);
1526 periodics [periodiccnt - 1] = w; 1706 periodics [periodiccnt - 1] = (WT)w;
1527 upheap ((WT *)periodics, periodiccnt - 1); 1707 upheap (periodics, periodiccnt - 1);
1528 1708
1529 assert (("internal periodic heap corruption", periodics [((W)w)->active - 1] == w)); 1709 /*assert (("internal periodic heap corruption", periodics [((W)w)->active - 1] == w));*/
1530} 1710}
1531 1711
1532void 1712void noinline
1533ev_periodic_stop (EV_P_ ev_periodic *w) 1713ev_periodic_stop (EV_P_ ev_periodic *w)
1534{ 1714{
1535 ev_clear_pending (EV_A_ (W)w); 1715 clear_pending (EV_A_ (W)w);
1536 if (expect_false (!ev_is_active (w))) 1716 if (expect_false (!ev_is_active (w)))
1537 return; 1717 return;
1538 1718
1539 assert (("internal periodic heap corruption", periodics [((W)w)->active - 1] == w)); 1719 assert (("internal periodic heap corruption", periodics [((W)w)->active - 1] == (WT)w));
1540 1720
1721 {
1722 int active = ((W)w)->active;
1723
1541 if (expect_true (((W)w)->active < periodiccnt--)) 1724 if (expect_true (--active < --periodiccnt))
1542 { 1725 {
1543 periodics [((W)w)->active - 1] = periodics [periodiccnt]; 1726 periodics [active] = periodics [periodiccnt];
1544 adjustheap ((WT *)periodics, periodiccnt, ((W)w)->active - 1); 1727 adjustheap (periodics, periodiccnt, active);
1545 } 1728 }
1729 }
1546 1730
1547 ev_stop (EV_A_ (W)w); 1731 ev_stop (EV_A_ (W)w);
1548} 1732}
1549 1733
1550void 1734void noinline
1551ev_periodic_again (EV_P_ ev_periodic *w) 1735ev_periodic_again (EV_P_ ev_periodic *w)
1552{ 1736{
1553 /* TODO: use adjustheap and recalculation */ 1737 /* TODO: use adjustheap and recalculation */
1554 ev_periodic_stop (EV_A_ w); 1738 ev_periodic_stop (EV_A_ w);
1555 ev_periodic_start (EV_A_ w); 1739 ev_periodic_start (EV_A_ w);
1556} 1740}
1557#endif 1741#endif
1558 1742
1559void
1560ev_idle_start (EV_P_ ev_idle *w)
1561{
1562 if (expect_false (ev_is_active (w)))
1563 return;
1564
1565 ev_start (EV_A_ (W)w, ++idlecnt);
1566 array_needsize (ev_idle *, idles, idlemax, idlecnt, EMPTY2);
1567 idles [idlecnt - 1] = w;
1568}
1569
1570void
1571ev_idle_stop (EV_P_ ev_idle *w)
1572{
1573 ev_clear_pending (EV_A_ (W)w);
1574 if (expect_false (!ev_is_active (w)))
1575 return;
1576
1577 {
1578 int active = ((W)w)->active;
1579 idles [active - 1] = idles [--idlecnt];
1580 ((W)idles [active - 1])->active = active;
1581 }
1582
1583 ev_stop (EV_A_ (W)w);
1584}
1585
1586void
1587ev_prepare_start (EV_P_ ev_prepare *w)
1588{
1589 if (expect_false (ev_is_active (w)))
1590 return;
1591
1592 ev_start (EV_A_ (W)w, ++preparecnt);
1593 array_needsize (ev_prepare *, prepares, preparemax, preparecnt, EMPTY2);
1594 prepares [preparecnt - 1] = w;
1595}
1596
1597void
1598ev_prepare_stop (EV_P_ ev_prepare *w)
1599{
1600 ev_clear_pending (EV_A_ (W)w);
1601 if (expect_false (!ev_is_active (w)))
1602 return;
1603
1604 {
1605 int active = ((W)w)->active;
1606 prepares [active - 1] = prepares [--preparecnt];
1607 ((W)prepares [active - 1])->active = active;
1608 }
1609
1610 ev_stop (EV_A_ (W)w);
1611}
1612
1613void
1614ev_check_start (EV_P_ ev_check *w)
1615{
1616 if (expect_false (ev_is_active (w)))
1617 return;
1618
1619 ev_start (EV_A_ (W)w, ++checkcnt);
1620 array_needsize (ev_check *, checks, checkmax, checkcnt, EMPTY2);
1621 checks [checkcnt - 1] = w;
1622}
1623
1624void
1625ev_check_stop (EV_P_ ev_check *w)
1626{
1627 ev_clear_pending (EV_A_ (W)w);
1628 if (expect_false (!ev_is_active (w)))
1629 return;
1630
1631 {
1632 int active = ((W)w)->active;
1633 checks [active - 1] = checks [--checkcnt];
1634 ((W)checks [active - 1])->active = active;
1635 }
1636
1637 ev_stop (EV_A_ (W)w);
1638}
1639
1640#ifndef SA_RESTART 1743#ifndef SA_RESTART
1641# define SA_RESTART 0 1744# define SA_RESTART 0
1642#endif 1745#endif
1643 1746
1644void 1747void noinline
1645ev_signal_start (EV_P_ ev_signal *w) 1748ev_signal_start (EV_P_ ev_signal *w)
1646{ 1749{
1647#if EV_MULTIPLICITY 1750#if EV_MULTIPLICITY
1648 assert (("signal watchers are only supported in the default loop", loop == ev_default_loop_ptr)); 1751 assert (("signal watchers are only supported in the default loop", loop == ev_default_loop_ptr));
1649#endif 1752#endif
1650 if (expect_false (ev_is_active (w))) 1753 if (expect_false (ev_is_active (w)))
1651 return; 1754 return;
1652 1755
1653 assert (("ev_signal_start called with illegal signal number", w->signum > 0)); 1756 assert (("ev_signal_start called with illegal signal number", w->signum > 0));
1654 1757
1758 {
1759#ifndef _WIN32
1760 sigset_t full, prev;
1761 sigfillset (&full);
1762 sigprocmask (SIG_SETMASK, &full, &prev);
1763#endif
1764
1765 array_needsize (ANSIG, signals, signalmax, w->signum, signals_init);
1766
1767#ifndef _WIN32
1768 sigprocmask (SIG_SETMASK, &prev, 0);
1769#endif
1770 }
1771
1655 ev_start (EV_A_ (W)w, 1); 1772 ev_start (EV_A_ (W)w, 1);
1656 array_needsize (ANSIG, signals, signalmax, w->signum, signals_init);
1657 wlist_add ((WL *)&signals [w->signum - 1].head, (WL)w); 1773 wlist_add (&signals [w->signum - 1].head, (WL)w);
1658 1774
1659 if (!((WL)w)->next) 1775 if (!((WL)w)->next)
1660 { 1776 {
1661#if _WIN32 1777#if _WIN32
1662 signal (w->signum, sighandler); 1778 signal (w->signum, sighandler);
1668 sigaction (w->signum, &sa, 0); 1784 sigaction (w->signum, &sa, 0);
1669#endif 1785#endif
1670 } 1786 }
1671} 1787}
1672 1788
1673void 1789void noinline
1674ev_signal_stop (EV_P_ ev_signal *w) 1790ev_signal_stop (EV_P_ ev_signal *w)
1675{ 1791{
1676 ev_clear_pending (EV_A_ (W)w); 1792 clear_pending (EV_A_ (W)w);
1677 if (expect_false (!ev_is_active (w))) 1793 if (expect_false (!ev_is_active (w)))
1678 return; 1794 return;
1679 1795
1680 wlist_del ((WL *)&signals [w->signum - 1].head, (WL)w); 1796 wlist_del (&signals [w->signum - 1].head, (WL)w);
1681 ev_stop (EV_A_ (W)w); 1797 ev_stop (EV_A_ (W)w);
1682 1798
1683 if (!signals [w->signum - 1].head) 1799 if (!signals [w->signum - 1].head)
1684 signal (w->signum, SIG_DFL); 1800 signal (w->signum, SIG_DFL);
1685} 1801}
1692#endif 1808#endif
1693 if (expect_false (ev_is_active (w))) 1809 if (expect_false (ev_is_active (w)))
1694 return; 1810 return;
1695 1811
1696 ev_start (EV_A_ (W)w, 1); 1812 ev_start (EV_A_ (W)w, 1);
1697 wlist_add ((WL *)&childs [w->pid & (PID_HASHSIZE - 1)], (WL)w); 1813 wlist_add (&childs [w->pid & (EV_PID_HASHSIZE - 1)], (WL)w);
1698} 1814}
1699 1815
1700void 1816void
1701ev_child_stop (EV_P_ ev_child *w) 1817ev_child_stop (EV_P_ ev_child *w)
1702{ 1818{
1703 ev_clear_pending (EV_A_ (W)w); 1819 clear_pending (EV_A_ (W)w);
1704 if (expect_false (!ev_is_active (w))) 1820 if (expect_false (!ev_is_active (w)))
1705 return; 1821 return;
1706 1822
1707 wlist_del ((WL *)&childs [w->pid & (PID_HASHSIZE - 1)], (WL)w); 1823 wlist_del (&childs [w->pid & (EV_PID_HASHSIZE - 1)], (WL)w);
1824 ev_stop (EV_A_ (W)w);
1825}
1826
1827#if EV_STAT_ENABLE
1828
1829# ifdef _WIN32
1830# undef lstat
1831# define lstat(a,b) _stati64 (a,b)
1832# endif
1833
1834#define DEF_STAT_INTERVAL 5.0074891
1835#define MIN_STAT_INTERVAL 0.1074891
1836
1837static void noinline stat_timer_cb (EV_P_ ev_timer *w_, int revents);
1838
1839#if EV_USE_INOTIFY
1840# define EV_INOTIFY_BUFSIZE 8192
1841
1842static void noinline
1843infy_add (EV_P_ ev_stat *w)
1844{
1845 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);
1846
1847 if (w->wd < 0)
1848 {
1849 ev_timer_start (EV_A_ &w->timer); /* this is not race-free, so we still need to recheck periodically */
1850
1851 /* monitor some parent directory for speedup hints */
1852 if ((errno == ENOENT || errno == EACCES) && strlen (w->path) < 4096)
1853 {
1854 char path [4096];
1855 strcpy (path, w->path);
1856
1857 do
1858 {
1859 int mask = IN_MASK_ADD | IN_DELETE_SELF | IN_MOVE_SELF
1860 | (errno == EACCES ? IN_ATTRIB : IN_CREATE | IN_MOVED_TO);
1861
1862 char *pend = strrchr (path, '/');
1863
1864 if (!pend)
1865 break; /* whoops, no '/', complain to your admin */
1866
1867 *pend = 0;
1868 w->wd = inotify_add_watch (fs_fd, path, mask);
1869 }
1870 while (w->wd < 0 && (errno == ENOENT || errno == EACCES));
1871 }
1872 }
1873 else
1874 ev_timer_stop (EV_A_ &w->timer); /* we can watch this in a race-free way */
1875
1876 if (w->wd >= 0)
1877 wlist_add (&fs_hash [w->wd & (EV_INOTIFY_HASHSIZE - 1)].head, (WL)w);
1878}
1879
1880static void noinline
1881infy_del (EV_P_ ev_stat *w)
1882{
1883 int slot;
1884 int wd = w->wd;
1885
1886 if (wd < 0)
1887 return;
1888
1889 w->wd = -2;
1890 slot = wd & (EV_INOTIFY_HASHSIZE - 1);
1891 wlist_del (&fs_hash [slot].head, (WL)w);
1892
1893 /* remove this watcher, if others are watching it, they will rearm */
1894 inotify_rm_watch (fs_fd, wd);
1895}
1896
1897static void noinline
1898infy_wd (EV_P_ int slot, int wd, struct inotify_event *ev)
1899{
1900 if (slot < 0)
1901 /* overflow, need to check for all hahs slots */
1902 for (slot = 0; slot < EV_INOTIFY_HASHSIZE; ++slot)
1903 infy_wd (EV_A_ slot, wd, ev);
1904 else
1905 {
1906 WL w_;
1907
1908 for (w_ = fs_hash [slot & (EV_INOTIFY_HASHSIZE - 1)].head; w_; )
1909 {
1910 ev_stat *w = (ev_stat *)w_;
1911 w_ = w_->next; /* lets us remove this watcher and all before it */
1912
1913 if (w->wd == wd || wd == -1)
1914 {
1915 if (ev->mask & (IN_IGNORED | IN_UNMOUNT | IN_DELETE_SELF))
1916 {
1917 w->wd = -1;
1918 infy_add (EV_A_ w); /* re-add, no matter what */
1919 }
1920
1921 stat_timer_cb (EV_A_ &w->timer, 0);
1922 }
1923 }
1924 }
1925}
1926
1927static void
1928infy_cb (EV_P_ ev_io *w, int revents)
1929{
1930 char buf [EV_INOTIFY_BUFSIZE];
1931 struct inotify_event *ev = (struct inotify_event *)buf;
1932 int ofs;
1933 int len = read (fs_fd, buf, sizeof (buf));
1934
1935 for (ofs = 0; ofs < len; ofs += sizeof (struct inotify_event) + ev->len)
1936 infy_wd (EV_A_ ev->wd, ev->wd, ev);
1937}
1938
1939void inline_size
1940infy_init (EV_P)
1941{
1942 if (fs_fd != -2)
1943 return;
1944
1945 fs_fd = inotify_init ();
1946
1947 if (fs_fd >= 0)
1948 {
1949 ev_io_init (&fs_w, infy_cb, fs_fd, EV_READ);
1950 ev_set_priority (&fs_w, EV_MAXPRI);
1951 ev_io_start (EV_A_ &fs_w);
1952 }
1953}
1954
1955void inline_size
1956infy_fork (EV_P)
1957{
1958 int slot;
1959
1960 if (fs_fd < 0)
1961 return;
1962
1963 close (fs_fd);
1964 fs_fd = inotify_init ();
1965
1966 for (slot = 0; slot < EV_INOTIFY_HASHSIZE; ++slot)
1967 {
1968 WL w_ = fs_hash [slot].head;
1969 fs_hash [slot].head = 0;
1970
1971 while (w_)
1972 {
1973 ev_stat *w = (ev_stat *)w_;
1974 w_ = w_->next; /* lets us add this watcher */
1975
1976 w->wd = -1;
1977
1978 if (fs_fd >= 0)
1979 infy_add (EV_A_ w); /* re-add, no matter what */
1980 else
1981 ev_timer_start (EV_A_ &w->timer);
1982 }
1983
1984 }
1985}
1986
1987#endif
1988
1989void
1990ev_stat_stat (EV_P_ ev_stat *w)
1991{
1992 if (lstat (w->path, &w->attr) < 0)
1993 w->attr.st_nlink = 0;
1994 else if (!w->attr.st_nlink)
1995 w->attr.st_nlink = 1;
1996}
1997
1998static void noinline
1999stat_timer_cb (EV_P_ ev_timer *w_, int revents)
2000{
2001 ev_stat *w = (ev_stat *)(((char *)w_) - offsetof (ev_stat, timer));
2002
2003 /* we copy this here each the time so that */
2004 /* prev has the old value when the callback gets invoked */
2005 w->prev = w->attr;
2006 ev_stat_stat (EV_A_ w);
2007
2008 /* memcmp doesn't work on netbsd, they.... do stuff to their struct stat */
2009 if (
2010 w->prev.st_dev != w->attr.st_dev
2011 || w->prev.st_ino != w->attr.st_ino
2012 || w->prev.st_mode != w->attr.st_mode
2013 || w->prev.st_nlink != w->attr.st_nlink
2014 || w->prev.st_uid != w->attr.st_uid
2015 || w->prev.st_gid != w->attr.st_gid
2016 || w->prev.st_rdev != w->attr.st_rdev
2017 || w->prev.st_size != w->attr.st_size
2018 || w->prev.st_atime != w->attr.st_atime
2019 || w->prev.st_mtime != w->attr.st_mtime
2020 || w->prev.st_ctime != w->attr.st_ctime
2021 ) {
2022 #if EV_USE_INOTIFY
2023 infy_del (EV_A_ w);
2024 infy_add (EV_A_ w);
2025 ev_stat_stat (EV_A_ w); /* avoid race... */
2026 #endif
2027
2028 ev_feed_event (EV_A_ w, EV_STAT);
2029 }
2030}
2031
2032void
2033ev_stat_start (EV_P_ ev_stat *w)
2034{
2035 if (expect_false (ev_is_active (w)))
2036 return;
2037
2038 /* since we use memcmp, we need to clear any padding data etc. */
2039 memset (&w->prev, 0, sizeof (ev_statdata));
2040 memset (&w->attr, 0, sizeof (ev_statdata));
2041
2042 ev_stat_stat (EV_A_ w);
2043
2044 if (w->interval < MIN_STAT_INTERVAL)
2045 w->interval = w->interval ? MIN_STAT_INTERVAL : DEF_STAT_INTERVAL;
2046
2047 ev_timer_init (&w->timer, stat_timer_cb, w->interval, w->interval);
2048 ev_set_priority (&w->timer, ev_priority (w));
2049
2050#if EV_USE_INOTIFY
2051 infy_init (EV_A);
2052
2053 if (fs_fd >= 0)
2054 infy_add (EV_A_ w);
2055 else
2056#endif
2057 ev_timer_start (EV_A_ &w->timer);
2058
2059 ev_start (EV_A_ (W)w, 1);
2060}
2061
2062void
2063ev_stat_stop (EV_P_ ev_stat *w)
2064{
2065 clear_pending (EV_A_ (W)w);
2066 if (expect_false (!ev_is_active (w)))
2067 return;
2068
2069#if EV_USE_INOTIFY
2070 infy_del (EV_A_ w);
2071#endif
2072 ev_timer_stop (EV_A_ &w->timer);
2073
2074 ev_stop (EV_A_ (W)w);
2075}
2076#endif
2077
2078#if EV_IDLE_ENABLE
2079void
2080ev_idle_start (EV_P_ ev_idle *w)
2081{
2082 if (expect_false (ev_is_active (w)))
2083 return;
2084
2085 pri_adjust (EV_A_ (W)w);
2086
2087 {
2088 int active = ++idlecnt [ABSPRI (w)];
2089
2090 ++idleall;
2091 ev_start (EV_A_ (W)w, active);
2092
2093 array_needsize (ev_idle *, idles [ABSPRI (w)], idlemax [ABSPRI (w)], active, EMPTY2);
2094 idles [ABSPRI (w)][active - 1] = w;
2095 }
2096}
2097
2098void
2099ev_idle_stop (EV_P_ ev_idle *w)
2100{
2101 clear_pending (EV_A_ (W)w);
2102 if (expect_false (!ev_is_active (w)))
2103 return;
2104
2105 {
2106 int active = ((W)w)->active;
2107
2108 idles [ABSPRI (w)][active - 1] = idles [ABSPRI (w)][--idlecnt [ABSPRI (w)]];
2109 ((W)idles [ABSPRI (w)][active - 1])->active = active;
2110
2111 ev_stop (EV_A_ (W)w);
2112 --idleall;
2113 }
2114}
2115#endif
2116
2117void
2118ev_prepare_start (EV_P_ ev_prepare *w)
2119{
2120 if (expect_false (ev_is_active (w)))
2121 return;
2122
2123 ev_start (EV_A_ (W)w, ++preparecnt);
2124 array_needsize (ev_prepare *, prepares, preparemax, preparecnt, EMPTY2);
2125 prepares [preparecnt - 1] = w;
2126}
2127
2128void
2129ev_prepare_stop (EV_P_ ev_prepare *w)
2130{
2131 clear_pending (EV_A_ (W)w);
2132 if (expect_false (!ev_is_active (w)))
2133 return;
2134
2135 {
2136 int active = ((W)w)->active;
2137 prepares [active - 1] = prepares [--preparecnt];
2138 ((W)prepares [active - 1])->active = active;
2139 }
2140
2141 ev_stop (EV_A_ (W)w);
2142}
2143
2144void
2145ev_check_start (EV_P_ ev_check *w)
2146{
2147 if (expect_false (ev_is_active (w)))
2148 return;
2149
2150 ev_start (EV_A_ (W)w, ++checkcnt);
2151 array_needsize (ev_check *, checks, checkmax, checkcnt, EMPTY2);
2152 checks [checkcnt - 1] = w;
2153}
2154
2155void
2156ev_check_stop (EV_P_ ev_check *w)
2157{
2158 clear_pending (EV_A_ (W)w);
2159 if (expect_false (!ev_is_active (w)))
2160 return;
2161
2162 {
2163 int active = ((W)w)->active;
2164 checks [active - 1] = checks [--checkcnt];
2165 ((W)checks [active - 1])->active = active;
2166 }
2167
1708 ev_stop (EV_A_ (W)w); 2168 ev_stop (EV_A_ (W)w);
1709} 2169}
1710 2170
1711#if EV_EMBED_ENABLE 2171#if EV_EMBED_ENABLE
1712void noinline 2172void noinline
1745} 2205}
1746 2206
1747void 2207void
1748ev_embed_stop (EV_P_ ev_embed *w) 2208ev_embed_stop (EV_P_ ev_embed *w)
1749{ 2209{
1750 ev_clear_pending (EV_A_ (W)w); 2210 clear_pending (EV_A_ (W)w);
1751 if (expect_false (!ev_is_active (w))) 2211 if (expect_false (!ev_is_active (w)))
1752 return; 2212 return;
1753 2213
1754 ev_io_stop (EV_A_ &w->io); 2214 ev_io_stop (EV_A_ &w->io);
1755 2215
1756 ev_stop (EV_A_ (W)w); 2216 ev_stop (EV_A_ (W)w);
1757} 2217}
1758#endif 2218#endif
1759 2219
1760#if EV_STAT_ENABLE 2220#if EV_FORK_ENABLE
1761
1762# ifdef _WIN32
1763# define lstat(a,b) stat(a,b)
1764# endif
1765
1766void 2221void
1767ev_stat_stat (EV_P_ ev_stat *w)
1768{
1769 if (lstat (w->path, &w->attr) < 0)
1770 w->attr.st_nlink = 0;
1771 else if (!w->attr.st_nlink)
1772 w->attr.st_nlink = 1;
1773}
1774
1775static void
1776stat_timer_cb (EV_P_ ev_timer *w_, int revents)
1777{
1778 ev_stat *w = (ev_stat *)(((char *)w_) - offsetof (ev_stat, timer));
1779
1780 /* we copy this here each the time so that */
1781 /* prev has the old value when the callback gets invoked */
1782 w->prev = w->attr;
1783 ev_stat_stat (EV_A_ w);
1784
1785 if (memcmp (&w->prev, &w->attr, sizeof (ev_statdata)))
1786 ev_feed_event (EV_A_ w, EV_STAT);
1787}
1788
1789void
1790ev_stat_start (EV_P_ ev_stat *w) 2222ev_fork_start (EV_P_ ev_fork *w)
1791{ 2223{
1792 if (expect_false (ev_is_active (w))) 2224 if (expect_false (ev_is_active (w)))
1793 return; 2225 return;
1794 2226
1795 /* since we use memcmp, we need to clear any padding data etc. */
1796 memset (&w->prev, 0, sizeof (ev_statdata));
1797 memset (&w->attr, 0, sizeof (ev_statdata));
1798
1799 ev_stat_stat (EV_A_ w);
1800
1801 ev_timer_init (&w->timer, stat_timer_cb, w->interval, w->interval);
1802 ev_set_priority (&w->timer, ev_priority (w));
1803 ev_timer_start (EV_A_ &w->timer);
1804
1805 ev_start (EV_A_ (W)w, 1); 2227 ev_start (EV_A_ (W)w, ++forkcnt);
2228 array_needsize (ev_fork *, forks, forkmax, forkcnt, EMPTY2);
2229 forks [forkcnt - 1] = w;
1806} 2230}
1807 2231
1808void 2232void
1809ev_stat_stop (EV_P_ ev_stat *w) 2233ev_fork_stop (EV_P_ ev_fork *w)
1810{ 2234{
1811 ev_clear_pending (EV_A_ (W)w); 2235 clear_pending (EV_A_ (W)w);
1812 if (expect_false (!ev_is_active (w))) 2236 if (expect_false (!ev_is_active (w)))
1813 return; 2237 return;
1814 2238
1815 ev_timer_stop (EV_A_ &w->timer); 2239 {
2240 int active = ((W)w)->active;
2241 forks [active - 1] = forks [--forkcnt];
2242 ((W)forks [active - 1])->active = active;
2243 }
1816 2244
1817 ev_stop (EV_A_ (W)w); 2245 ev_stop (EV_A_ (W)w);
1818} 2246}
1819#endif 2247#endif
1820 2248

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