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Comparing libev/ev.c (file contents):
Revision 1.51 by root, Sat Nov 3 21:58:51 2007 UTC vs.
Revision 1.68 by root, Mon Nov 5 20:19:00 2007 UTC

28 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE 28 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
29 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 29 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
30 */ 30 */
31#ifndef EV_STANDALONE 31#ifndef EV_STANDALONE
32# include "config.h" 32# include "config.h"
33
34# if HAVE_CLOCK_GETTIME
35# define EV_USE_MONOTONIC 1
36# define EV_USE_REALTIME 1
37# endif
38
39# if HAVE_SELECT && HAVE_SYS_SELECT_H
40# define EV_USE_SELECT 1
41# endif
42
43# if HAVE_POLL && HAVE_POLL_H
44# define EV_USE_POLL 1
45# endif
46
47# if HAVE_EPOLL && HAVE_EPOLL_CTL && HAVE_SYS_EPOLL_H
48# define EV_USE_EPOLL 1
49# endif
50
51# if HAVE_KQUEUE && HAVE_WORKING_KQUEUE && HAVE_SYS_EVENT_H && HAVE_SYS_QUEUE_H
52# define EV_USE_KQUEUE 1
53# endif
54
33#endif 55#endif
34 56
35#include <math.h> 57#include <math.h>
36#include <stdlib.h> 58#include <stdlib.h>
37#include <unistd.h> 59#include <unistd.h>
58 80
59#ifndef EV_USE_SELECT 81#ifndef EV_USE_SELECT
60# define EV_USE_SELECT 1 82# define EV_USE_SELECT 1
61#endif 83#endif
62 84
63#ifndef EV_USEV_POLL 85#ifndef EV_USE_POLL
64# define EV_USEV_POLL 0 /* poll is usually slower than select, and not as well tested */ 86# define EV_USE_POLL 0 /* poll is usually slower than select, and not as well tested */
65#endif 87#endif
66 88
67#ifndef EV_USE_EPOLL 89#ifndef EV_USE_EPOLL
68# define EV_USE_EPOLL 0 90# define EV_USE_EPOLL 0
69#endif 91#endif
70 92
71#ifndef EV_USE_KQUEUE 93#ifndef EV_USE_KQUEUE
72# define EV_USE_KQUEUE 0 94# define EV_USE_KQUEUE 0
95#endif
96
97#ifndef EV_USE_WIN32
98# ifdef WIN32
99# define EV_USE_WIN32 1
100# else
101# define EV_USE_WIN32 0
102# endif
73#endif 103#endif
74 104
75#ifndef EV_USE_REALTIME 105#ifndef EV_USE_REALTIME
76# define EV_USE_REALTIME 1 106# define EV_USE_REALTIME 1
77#endif 107#endif
113 143
114typedef struct ev_watcher *W; 144typedef struct ev_watcher *W;
115typedef struct ev_watcher_list *WL; 145typedef struct ev_watcher_list *WL;
116typedef struct ev_watcher_time *WT; 146typedef struct ev_watcher_time *WT;
117 147
118static ev_tstamp now_floor, mn_now, diff; /* monotonic clock */ 148static int have_monotonic; /* did clock_gettime (CLOCK_MONOTONIC) work? */
119static ev_tstamp rt_now;
120static int method;
121 149
122static int have_monotonic; /* runtime */ 150#if WIN32
123 151/* note: the comment below could not be substantiated, but what would I care */
124static ev_tstamp method_fudge; /* stupid epoll-returns-early bug */ 152/* MSDN says this is required to handle SIGFPE */
125static void (*method_modify)(EV_P_ int fd, int oev, int nev); 153volatile double SIGFPE_REQ = 0.0f;
126static void (*method_poll)(EV_P_ ev_tstamp timeout);
127
128static int activecnt; /* number of active events */
129
130#if EV_USE_SELECT
131static unsigned char *vec_ri, *vec_ro, *vec_wi, *vec_wo;
132static int vec_max;
133#endif 154#endif
134 155
135#if EV_USEV_POLL 156/*****************************************************************************/
136static struct pollfd *polls;
137static int pollmax, pollcnt;
138static int *pollidxs; /* maps fds into structure indices */
139static int pollidxmax;
140#endif
141 157
142#if EV_USE_EPOLL 158typedef struct
143static int epoll_fd = -1; 159{
160 WL head;
161 unsigned char events;
162 unsigned char reify;
163} ANFD;
144 164
145static struct epoll_event *events; 165typedef struct
146static int eventmax; 166{
147#endif 167 W w;
168 int events;
169} ANPENDING;
148 170
149#if EV_USE_KQUEUE 171#if EV_MULTIPLICITY
150static int kqueue_fd; 172
151static struct kevent *kqueue_changes; 173struct ev_loop
152static int kqueue_changemax, kqueue_changecnt; 174{
153static struct kevent *kqueue_events; 175# define VAR(name,decl) decl;
154static int kqueue_eventmax; 176# include "ev_vars.h"
177};
178# undef VAR
179# include "ev_wrap.h"
180
181#else
182
183# define VAR(name,decl) static decl;
184# include "ev_vars.h"
185# undef VAR
186
155#endif 187#endif
156 188
157/*****************************************************************************/ 189/*****************************************************************************/
158 190
159inline ev_tstamp 191inline ev_tstamp
206 base = realloc (base, sizeof (*base) * (newcnt)); \ 238 base = realloc (base, sizeof (*base) * (newcnt)); \
207 init (base + cur, newcnt - cur); \ 239 init (base + cur, newcnt - cur); \
208 cur = newcnt; \ 240 cur = newcnt; \
209 } 241 }
210 242
243#define array_slim(stem) \
244 if (stem ## max < array_roundsize (stem ## cnt >> 2)) \
245 { \
246 stem ## max = array_roundsize (stem ## cnt >> 1); \
247 base = realloc (base, sizeof (*base) * (stem ## max)); \
248 fprintf (stderr, "slimmed down " # stem " to %d\n", stem ## max);/*D*/\
249 }
250
251#define array_free(stem, idx) \
252 free (stem ## s idx); stem ## cnt idx = stem ## max idx = 0;
253
211/*****************************************************************************/ 254/*****************************************************************************/
212
213typedef struct
214{
215 struct ev_watcher_list *head;
216 unsigned char events;
217 unsigned char reify;
218} ANFD;
219
220static ANFD *anfds;
221static int anfdmax;
222 255
223static void 256static void
224anfds_init (ANFD *base, int count) 257anfds_init (ANFD *base, int count)
225{ 258{
226 while (count--) 259 while (count--)
230 base->reify = 0; 263 base->reify = 0;
231 264
232 ++base; 265 ++base;
233 } 266 }
234} 267}
235
236typedef struct
237{
238 W w;
239 int events;
240} ANPENDING;
241
242static ANPENDING *pendings [NUMPRI];
243static int pendingmax [NUMPRI], pendingcnt [NUMPRI];
244 268
245static void 269static void
246event (EV_P_ W w, int events) 270event (EV_P_ W w, int events)
247{ 271{
248 if (w->pending) 272 if (w->pending)
281 } 305 }
282} 306}
283 307
284/*****************************************************************************/ 308/*****************************************************************************/
285 309
286static int *fdchanges;
287static int fdchangemax, fdchangecnt;
288
289static void 310static void
290fd_reify (EV_P) 311fd_reify (EV_P)
291{ 312{
292 int i; 313 int i;
293 314
302 for (w = (struct ev_io *)anfd->head; w; w = (struct ev_io *)((WL)w)->next) 323 for (w = (struct ev_io *)anfd->head; w; w = (struct ev_io *)((WL)w)->next)
303 events |= w->events; 324 events |= w->events;
304 325
305 anfd->reify = 0; 326 anfd->reify = 0;
306 327
307 if (anfd->events != events)
308 {
309 method_modify (EV_A_ fd, anfd->events, events); 328 method_modify (EV_A_ fd, anfd->events, events);
310 anfd->events = events; 329 anfd->events = events;
311 }
312 } 330 }
313 331
314 fdchangecnt = 0; 332 fdchangecnt = 0;
315} 333}
316 334
353 371
354/* called on ENOMEM in select/poll to kill some fds and retry */ 372/* called on ENOMEM in select/poll to kill some fds and retry */
355static void 373static void
356fd_enomem (EV_P) 374fd_enomem (EV_P)
357{ 375{
358 int fd = anfdmax; 376 int fd;
359 377
360 while (fd--) 378 for (fd = anfdmax; fd--; )
361 if (anfds [fd].events) 379 if (anfds [fd].events)
362 { 380 {
363 close (fd);
364 fd_kill (EV_A_ fd); 381 fd_kill (EV_A_ fd);
365 return; 382 return;
366 } 383 }
367} 384}
368 385
386/* susually called after fork if method needs to re-arm all fds from scratch */
387static void
388fd_rearm_all (EV_P)
389{
390 int fd;
391
392 /* this should be highly optimised to not do anything but set a flag */
393 for (fd = 0; fd < anfdmax; ++fd)
394 if (anfds [fd].events)
395 {
396 anfds [fd].events = 0;
397 fd_change (EV_A_ fd);
398 }
399}
400
369/*****************************************************************************/ 401/*****************************************************************************/
370 402
371static struct ev_timer **timers;
372static int timermax, timercnt;
373
374static struct ev_periodic **periodics;
375static int periodicmax, periodiccnt;
376
377static void 403static void
378upheap (WT *timers, int k) 404upheap (WT *heap, int k)
379{ 405{
380 WT w = timers [k]; 406 WT w = heap [k];
381 407
382 while (k && timers [k >> 1]->at > w->at) 408 while (k && heap [k >> 1]->at > w->at)
383 { 409 {
384 timers [k] = timers [k >> 1]; 410 heap [k] = heap [k >> 1];
385 timers [k]->active = k + 1; 411 ((W)heap [k])->active = k + 1;
386 k >>= 1; 412 k >>= 1;
387 } 413 }
388 414
389 timers [k] = w; 415 heap [k] = w;
390 timers [k]->active = k + 1; 416 ((W)heap [k])->active = k + 1;
391 417
392} 418}
393 419
394static void 420static void
395downheap (WT *timers, int N, int k) 421downheap (WT *heap, int N, int k)
396{ 422{
397 WT w = timers [k]; 423 WT w = heap [k];
398 424
399 while (k < (N >> 1)) 425 while (k < (N >> 1))
400 { 426 {
401 int j = k << 1; 427 int j = k << 1;
402 428
403 if (j + 1 < N && timers [j]->at > timers [j + 1]->at) 429 if (j + 1 < N && heap [j]->at > heap [j + 1]->at)
404 ++j; 430 ++j;
405 431
406 if (w->at <= timers [j]->at) 432 if (w->at <= heap [j]->at)
407 break; 433 break;
408 434
409 timers [k] = timers [j]; 435 heap [k] = heap [j];
410 timers [k]->active = k + 1; 436 ((W)heap [k])->active = k + 1;
411 k = j; 437 k = j;
412 } 438 }
413 439
414 timers [k] = w; 440 heap [k] = w;
415 timers [k]->active = k + 1; 441 ((W)heap [k])->active = k + 1;
416} 442}
417 443
418/*****************************************************************************/ 444/*****************************************************************************/
419 445
420typedef struct 446typedef struct
421{ 447{
422 struct ev_watcher_list *head; 448 WL head;
423 sig_atomic_t volatile gotsig; 449 sig_atomic_t volatile gotsig;
424} ANSIG; 450} ANSIG;
425 451
426static ANSIG *signals; 452static ANSIG *signals;
427static int signalmax; 453static int signalmax;
443} 469}
444 470
445static void 471static void
446sighandler (int signum) 472sighandler (int signum)
447{ 473{
474#if WIN32
475 signal (signum, sighandler);
476#endif
477
448 signals [signum - 1].gotsig = 1; 478 signals [signum - 1].gotsig = 1;
449 479
450 if (!gotsig) 480 if (!gotsig)
451 { 481 {
452 int old_errno = errno; 482 int old_errno = errno;
457} 487}
458 488
459static void 489static void
460sigcb (EV_P_ struct ev_io *iow, int revents) 490sigcb (EV_P_ struct ev_io *iow, int revents)
461{ 491{
462 struct ev_watcher_list *w; 492 WL w;
463 int signum; 493 int signum;
464 494
465 read (sigpipe [0], &revents, 1); 495 read (sigpipe [0], &revents, 1);
466 gotsig = 0; 496 gotsig = 0;
467 497
486 fcntl (sigpipe [0], F_SETFL, O_NONBLOCK); 516 fcntl (sigpipe [0], F_SETFL, O_NONBLOCK);
487 fcntl (sigpipe [1], F_SETFL, O_NONBLOCK); 517 fcntl (sigpipe [1], F_SETFL, O_NONBLOCK);
488#endif 518#endif
489 519
490 ev_io_set (&sigev, sigpipe [0], EV_READ); 520 ev_io_set (&sigev, sigpipe [0], EV_READ);
491 ev_io_start (&sigev); 521 ev_io_start (EV_A_ &sigev);
522 ev_unref (EV_A); /* child watcher should not keep loop alive */
492} 523}
493 524
494/*****************************************************************************/ 525/*****************************************************************************/
495 526
496static struct ev_idle **idles; 527#ifndef WIN32
497static int idlemax, idlecnt;
498
499static struct ev_prepare **prepares;
500static int preparemax, preparecnt;
501
502static struct ev_check **checks;
503static int checkmax, checkcnt;
504
505/*****************************************************************************/
506 528
507static struct ev_child *childs [PID_HASHSIZE]; 529static struct ev_child *childs [PID_HASHSIZE];
508static struct ev_signal childev; 530static struct ev_signal childev;
509
510#ifndef WIN32
511 531
512#ifndef WCONTINUED 532#ifndef WCONTINUED
513# define WCONTINUED 0 533# define WCONTINUED 0
514#endif 534#endif
515 535
519 struct ev_child *w; 539 struct ev_child *w;
520 540
521 for (w = (struct ev_child *)childs [chain & (PID_HASHSIZE - 1)]; w; w = (struct ev_child *)((WL)w)->next) 541 for (w = (struct ev_child *)childs [chain & (PID_HASHSIZE - 1)]; w; w = (struct ev_child *)((WL)w)->next)
522 if (w->pid == pid || !w->pid) 542 if (w->pid == pid || !w->pid)
523 { 543 {
524 w->priority = sw->priority; /* need to do it *now* */ 544 ev_priority (w) = ev_priority (sw); /* need to do it *now* */
525 w->rpid = pid; 545 w->rpid = pid;
526 w->rstatus = status; 546 w->rstatus = status;
527 event (EV_A_ (W)w, EV_CHILD); 547 event (EV_A_ (W)w, EV_CHILD);
528 } 548 }
529} 549}
530 550
531static void 551static void
551# include "ev_kqueue.c" 571# include "ev_kqueue.c"
552#endif 572#endif
553#if EV_USE_EPOLL 573#if EV_USE_EPOLL
554# include "ev_epoll.c" 574# include "ev_epoll.c"
555#endif 575#endif
556#if EV_USEV_POLL 576#if EV_USE_POLL
557# include "ev_poll.c" 577# include "ev_poll.c"
558#endif 578#endif
559#if EV_USE_SELECT 579#if EV_USE_SELECT
560# include "ev_select.c" 580# include "ev_select.c"
561#endif 581#endif
588ev_method (EV_P) 608ev_method (EV_P)
589{ 609{
590 return method; 610 return method;
591} 611}
592 612
593int 613static void
594ev_init (EV_P_ int methods) 614loop_init (EV_P_ int methods)
595{ 615{
596 if (!method) 616 if (!method)
597 { 617 {
598#if EV_USE_MONOTONIC 618#if EV_USE_MONOTONIC
599 { 619 {
604#endif 624#endif
605 625
606 rt_now = ev_time (); 626 rt_now = ev_time ();
607 mn_now = get_clock (); 627 mn_now = get_clock ();
608 now_floor = mn_now; 628 now_floor = mn_now;
609 diff = rt_now - mn_now; 629 rtmn_diff = rt_now - mn_now;
610
611 if (pipe (sigpipe))
612 return 0;
613 630
614 if (methods == EVMETHOD_AUTO) 631 if (methods == EVMETHOD_AUTO)
615 if (!enable_secure () && getenv ("LIBmethodS")) 632 if (!enable_secure () && getenv ("LIBEV_METHODS"))
616 methods = atoi (getenv ("LIBmethodS")); 633 methods = atoi (getenv ("LIBEV_METHODS"));
617 else 634 else
618 methods = EVMETHOD_ANY; 635 methods = EVMETHOD_ANY;
619 636
620 method = 0; 637 method = 0;
638#if EV_USE_WIN32
639 if (!method && (methods & EVMETHOD_WIN32 )) method = win32_init (EV_A_ methods);
640#endif
621#if EV_USE_KQUEUE 641#if EV_USE_KQUEUE
622 if (!method && (methods & EVMETHOD_KQUEUE)) method = kqueue_init (EV_A_ methods); 642 if (!method && (methods & EVMETHOD_KQUEUE)) method = kqueue_init (EV_A_ methods);
623#endif 643#endif
624#if EV_USE_EPOLL 644#if EV_USE_EPOLL
625 if (!method && (methods & EVMETHOD_EPOLL )) method = epoll_init (EV_A_ methods); 645 if (!method && (methods & EVMETHOD_EPOLL )) method = epoll_init (EV_A_ methods);
626#endif 646#endif
627#if EV_USEV_POLL 647#if EV_USE_POLL
628 if (!method && (methods & EVMETHOD_POLL )) method = poll_init (EV_A_ methods); 648 if (!method && (methods & EVMETHOD_POLL )) method = poll_init (EV_A_ methods);
629#endif 649#endif
630#if EV_USE_SELECT 650#if EV_USE_SELECT
631 if (!method && (methods & EVMETHOD_SELECT)) method = select_init (EV_A_ methods); 651 if (!method && (methods & EVMETHOD_SELECT)) method = select_init (EV_A_ methods);
632#endif 652#endif
653 }
654}
633 655
656void
657loop_destroy (EV_P)
658{
659 int i;
660
661#if EV_USE_WIN32
662 if (method == EVMETHOD_WIN32 ) win32_destroy (EV_A);
663#endif
664#if EV_USE_KQUEUE
665 if (method == EVMETHOD_KQUEUE) kqueue_destroy (EV_A);
666#endif
667#if EV_USE_EPOLL
668 if (method == EVMETHOD_EPOLL ) epoll_destroy (EV_A);
669#endif
670#if EV_USE_POLL
671 if (method == EVMETHOD_POLL ) poll_destroy (EV_A);
672#endif
673#if EV_USE_SELECT
674 if (method == EVMETHOD_SELECT) select_destroy (EV_A);
675#endif
676
677 for (i = NUMPRI; i--; )
678 array_free (pending, [i]);
679
680 array_free (fdchange, );
681 array_free (timer, );
682 array_free (periodic, );
683 array_free (idle, );
684 array_free (prepare, );
685 array_free (check, );
686
687 method = 0;
688 /*TODO*/
689}
690
691void
692loop_fork (EV_P)
693{
694 /*TODO*/
695#if EV_USE_EPOLL
696 if (method == EVMETHOD_EPOLL ) epoll_fork (EV_A);
697#endif
698#if EV_USE_KQUEUE
699 if (method == EVMETHOD_KQUEUE) kqueue_fork (EV_A);
700#endif
701}
702
703#if EV_MULTIPLICITY
704struct ev_loop *
705ev_loop_new (int methods)
706{
707 struct ev_loop *loop = (struct ev_loop *)calloc (1, sizeof (struct ev_loop));
708
709 loop_init (EV_A_ methods);
710
711 if (ev_method (EV_A))
712 return loop;
713
714 return 0;
715}
716
717void
718ev_loop_destroy (EV_P)
719{
720 loop_destroy (EV_A);
721 free (loop);
722}
723
724void
725ev_loop_fork (EV_P)
726{
727 loop_fork (EV_A);
728}
729
730#endif
731
732#if EV_MULTIPLICITY
733struct ev_loop default_loop_struct;
734static struct ev_loop *default_loop;
735
736struct ev_loop *
737#else
738static int default_loop;
739
740int
741#endif
742ev_default_loop (int methods)
743{
744 if (sigpipe [0] == sigpipe [1])
745 if (pipe (sigpipe))
746 return 0;
747
748 if (!default_loop)
749 {
750#if EV_MULTIPLICITY
751 struct ev_loop *loop = default_loop = &default_loop_struct;
752#else
753 default_loop = 1;
754#endif
755
756 loop_init (EV_A_ methods);
757
634 if (method) 758 if (ev_method (EV_A))
635 { 759 {
636 ev_watcher_init (&sigev, sigcb); 760 ev_watcher_init (&sigev, sigcb);
637 ev_set_priority (&sigev, EV_MAXPRI); 761 ev_set_priority (&sigev, EV_MAXPRI);
638 siginit (EV_A); 762 siginit (EV_A);
639 763
640#ifndef WIN32 764#ifndef WIN32
641 ev_signal_init (&childev, childcb, SIGCHLD); 765 ev_signal_init (&childev, childcb, SIGCHLD);
642 ev_set_priority (&childev, EV_MAXPRI); 766 ev_set_priority (&childev, EV_MAXPRI);
643 ev_signal_start (EV_A_ &childev); 767 ev_signal_start (EV_A_ &childev);
768 ev_unref (EV_A); /* child watcher should not keep loop alive */
644#endif 769#endif
645 } 770 }
771 else
772 default_loop = 0;
646 } 773 }
647 774
648 return method; 775 return default_loop;
649} 776}
650 777
651/*****************************************************************************/
652
653void 778void
654ev_fork_prepare (void) 779ev_default_destroy (void)
655{ 780{
656 /* nop */ 781#if EV_MULTIPLICITY
657} 782 struct ev_loop *loop = default_loop;
658
659void
660ev_fork_parent (void)
661{
662 /* nop */
663}
664
665void
666ev_fork_child (void)
667{
668#if EV_USE_EPOLL
669 if (method == EVMETHOD_EPOLL)
670 epoll_postfork_child ();
671#endif 783#endif
672 784
785 ev_ref (EV_A); /* child watcher */
786 ev_signal_stop (EV_A_ &childev);
787
788 ev_ref (EV_A); /* signal watcher */
673 ev_io_stop (&sigev); 789 ev_io_stop (EV_A_ &sigev);
790
791 close (sigpipe [0]); sigpipe [0] = 0;
792 close (sigpipe [1]); sigpipe [1] = 0;
793
794 loop_destroy (EV_A);
795}
796
797void
798ev_default_fork (void)
799{
800#if EV_MULTIPLICITY
801 struct ev_loop *loop = default_loop;
802#endif
803
804 loop_fork (EV_A);
805
806 ev_io_stop (EV_A_ &sigev);
674 close (sigpipe [0]); 807 close (sigpipe [0]);
675 close (sigpipe [1]); 808 close (sigpipe [1]);
676 pipe (sigpipe); 809 pipe (sigpipe);
810
811 ev_ref (EV_A); /* signal watcher */
677 siginit (); 812 siginit (EV_A);
678} 813}
679 814
680/*****************************************************************************/ 815/*****************************************************************************/
681 816
682static void 817static void
698} 833}
699 834
700static void 835static void
701timers_reify (EV_P) 836timers_reify (EV_P)
702{ 837{
703 while (timercnt && timers [0]->at <= mn_now) 838 while (timercnt && ((WT)timers [0])->at <= mn_now)
704 { 839 {
705 struct ev_timer *w = timers [0]; 840 struct ev_timer *w = timers [0];
841
842 assert (("inactive timer on timer heap detected", ev_is_active (w)));
706 843
707 /* first reschedule or stop timer */ 844 /* first reschedule or stop timer */
708 if (w->repeat) 845 if (w->repeat)
709 { 846 {
710 assert (("negative ev_timer repeat value found while processing timers", w->repeat > 0.)); 847 assert (("negative ev_timer repeat value found while processing timers", w->repeat > 0.));
711 w->at = mn_now + w->repeat; 848 ((WT)w)->at = mn_now + w->repeat;
712 downheap ((WT *)timers, timercnt, 0); 849 downheap ((WT *)timers, timercnt, 0);
713 } 850 }
714 else 851 else
715 ev_timer_stop (EV_A_ w); /* nonrepeating: stop timer */ 852 ev_timer_stop (EV_A_ w); /* nonrepeating: stop timer */
716 853
717 event ((W)w, EV_TIMEOUT); 854 event (EV_A_ (W)w, EV_TIMEOUT);
718 } 855 }
719} 856}
720 857
721static void 858static void
722periodics_reify (EV_P) 859periodics_reify (EV_P)
723{ 860{
724 while (periodiccnt && periodics [0]->at <= rt_now) 861 while (periodiccnt && ((WT)periodics [0])->at <= rt_now)
725 { 862 {
726 struct ev_periodic *w = periodics [0]; 863 struct ev_periodic *w = periodics [0];
864
865 assert (("inactive timer on periodic heap detected", ev_is_active (w)));
727 866
728 /* first reschedule or stop timer */ 867 /* first reschedule or stop timer */
729 if (w->interval) 868 if (w->interval)
730 { 869 {
731 w->at += floor ((rt_now - w->at) / w->interval + 1.) * w->interval; 870 ((WT)w)->at += floor ((rt_now - ((WT)w)->at) / w->interval + 1.) * w->interval;
732 assert (("ev_periodic timeout in the past detected while processing timers, negative interval?", w->at > rt_now)); 871 assert (("ev_periodic timeout in the past detected while processing timers, negative interval?", ((WT)w)->at > rt_now));
733 downheap ((WT *)periodics, periodiccnt, 0); 872 downheap ((WT *)periodics, periodiccnt, 0);
734 } 873 }
735 else 874 else
736 ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */ 875 ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */
737 876
738 event (EV_A_ (W)w, EV_PERIODIC); 877 event (EV_A_ (W)w, EV_PERIODIC);
739 } 878 }
740} 879}
741 880
742static void 881static void
743periodics_reschedule (EV_P_ ev_tstamp diff) 882periodics_reschedule (EV_P)
744{ 883{
745 int i; 884 int i;
746 885
747 /* adjust periodics after time jump */ 886 /* adjust periodics after time jump */
748 for (i = 0; i < periodiccnt; ++i) 887 for (i = 0; i < periodiccnt; ++i)
749 { 888 {
750 struct ev_periodic *w = periodics [i]; 889 struct ev_periodic *w = periodics [i];
751 890
752 if (w->interval) 891 if (w->interval)
753 { 892 {
754 ev_tstamp diff = ceil ((rt_now - w->at) / w->interval) * w->interval; 893 ev_tstamp diff = ceil ((rt_now - ((WT)w)->at) / w->interval) * w->interval;
755 894
756 if (fabs (diff) >= 1e-4) 895 if (fabs (diff) >= 1e-4)
757 { 896 {
758 ev_periodic_stop (EV_A_ w); 897 ev_periodic_stop (EV_A_ w);
759 ev_periodic_start (EV_A_ w); 898 ev_periodic_start (EV_A_ w);
769{ 908{
770 mn_now = get_clock (); 909 mn_now = get_clock ();
771 910
772 if (expect_true (mn_now - now_floor < MIN_TIMEJUMP * .5)) 911 if (expect_true (mn_now - now_floor < MIN_TIMEJUMP * .5))
773 { 912 {
774 rt_now = mn_now + diff; 913 rt_now = rtmn_diff + mn_now;
775 return 0; 914 return 0;
776 } 915 }
777 else 916 else
778 { 917 {
779 now_floor = mn_now; 918 now_floor = mn_now;
790#if EV_USE_MONOTONIC 929#if EV_USE_MONOTONIC
791 if (expect_true (have_monotonic)) 930 if (expect_true (have_monotonic))
792 { 931 {
793 if (time_update_monotonic (EV_A)) 932 if (time_update_monotonic (EV_A))
794 { 933 {
795 ev_tstamp odiff = diff; 934 ev_tstamp odiff = rtmn_diff;
796 935
797 for (i = 4; --i; ) /* loop a few times, before making important decisions */ 936 for (i = 4; --i; ) /* loop a few times, before making important decisions */
798 { 937 {
799 diff = rt_now - mn_now; 938 rtmn_diff = rt_now - mn_now;
800 939
801 if (fabs (odiff - diff) < MIN_TIMEJUMP) 940 if (fabs (odiff - rtmn_diff) < MIN_TIMEJUMP)
802 return; /* all is well */ 941 return; /* all is well */
803 942
804 rt_now = ev_time (); 943 rt_now = ev_time ();
805 mn_now = get_clock (); 944 mn_now = get_clock ();
806 now_floor = mn_now; 945 now_floor = mn_now;
807 } 946 }
808 947
809 periodics_reschedule (EV_A_ diff - odiff); 948 periodics_reschedule (EV_A);
810 /* no timer adjustment, as the monotonic clock doesn't jump */ 949 /* no timer adjustment, as the monotonic clock doesn't jump */
950 /* timers_reschedule (EV_A_ rtmn_diff - odiff) */
811 } 951 }
812 } 952 }
813 else 953 else
814#endif 954#endif
815 { 955 {
816 rt_now = ev_time (); 956 rt_now = ev_time ();
817 957
818 if (expect_false (mn_now > rt_now || mn_now < rt_now - MAX_BLOCKTIME - MIN_TIMEJUMP)) 958 if (expect_false (mn_now > rt_now || mn_now < rt_now - MAX_BLOCKTIME - MIN_TIMEJUMP))
819 { 959 {
820 periodics_reschedule (EV_A_ rt_now - mn_now); 960 periodics_reschedule (EV_A);
821 961
822 /* adjust timers. this is easy, as the offset is the same for all */ 962 /* adjust timers. this is easy, as the offset is the same for all */
823 for (i = 0; i < timercnt; ++i) 963 for (i = 0; i < timercnt; ++i)
824 timers [i]->at += diff; 964 ((WT)timers [i])->at += rt_now - mn_now;
825 } 965 }
826 966
827 mn_now = rt_now; 967 mn_now = rt_now;
828 } 968 }
829} 969}
880 { 1020 {
881 block = MAX_BLOCKTIME; 1021 block = MAX_BLOCKTIME;
882 1022
883 if (timercnt) 1023 if (timercnt)
884 { 1024 {
885 ev_tstamp to = timers [0]->at - mn_now + method_fudge; 1025 ev_tstamp to = ((WT)timers [0])->at - mn_now + method_fudge;
886 if (block > to) block = to; 1026 if (block > to) block = to;
887 } 1027 }
888 1028
889 if (periodiccnt) 1029 if (periodiccnt)
890 { 1030 {
891 ev_tstamp to = periodics [0]->at - rt_now + method_fudge; 1031 ev_tstamp to = ((WT)periodics [0])->at - rt_now + method_fudge;
892 if (block > to) block = to; 1032 if (block > to) block = to;
893 } 1033 }
894 1034
895 if (block < 0.) block = 0.; 1035 if (block < 0.) block = 0.;
896 } 1036 }
911 /* queue check watchers, to be executed first */ 1051 /* queue check watchers, to be executed first */
912 if (checkcnt) 1052 if (checkcnt)
913 queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK); 1053 queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK);
914 1054
915 call_pending (EV_A); 1055 call_pending (EV_A);
916 printf ("activecnt %d\n", activecnt);//D
917 } 1056 }
918 while (activecnt && !loop_done); 1057 while (activecnt && !loop_done);
919 1058
920 if (loop_done != 2) 1059 if (loop_done != 2)
921 loop_done = 0; 1060 loop_done = 0;
1014ev_timer_start (EV_P_ struct ev_timer *w) 1153ev_timer_start (EV_P_ struct ev_timer *w)
1015{ 1154{
1016 if (ev_is_active (w)) 1155 if (ev_is_active (w))
1017 return; 1156 return;
1018 1157
1019 w->at += mn_now; 1158 ((WT)w)->at += mn_now;
1020 1159
1021 assert (("ev_timer_start called with negative timer repeat value", w->repeat >= 0.)); 1160 assert (("ev_timer_start called with negative timer repeat value", w->repeat >= 0.));
1022 1161
1023 ev_start (EV_A_ (W)w, ++timercnt); 1162 ev_start (EV_A_ (W)w, ++timercnt);
1024 array_needsize (timers, timermax, timercnt, ); 1163 array_needsize (timers, timermax, timercnt, );
1025 timers [timercnt - 1] = w; 1164 timers [timercnt - 1] = w;
1026 upheap ((WT *)timers, timercnt - 1); 1165 upheap ((WT *)timers, timercnt - 1);
1166
1167 assert (("internal timer heap corruption", timers [((W)w)->active - 1] == w));
1027} 1168}
1028 1169
1029void 1170void
1030ev_timer_stop (EV_P_ struct ev_timer *w) 1171ev_timer_stop (EV_P_ struct ev_timer *w)
1031{ 1172{
1032 ev_clear_pending (EV_A_ (W)w); 1173 ev_clear_pending (EV_A_ (W)w);
1033 if (!ev_is_active (w)) 1174 if (!ev_is_active (w))
1034 return; 1175 return;
1035 1176
1177 assert (("internal timer heap corruption", timers [((W)w)->active - 1] == w));
1178
1036 if (w->active < timercnt--) 1179 if (((W)w)->active < timercnt--)
1037 { 1180 {
1038 timers [w->active - 1] = timers [timercnt]; 1181 timers [((W)w)->active - 1] = timers [timercnt];
1039 downheap ((WT *)timers, timercnt, w->active - 1); 1182 downheap ((WT *)timers, timercnt, ((W)w)->active - 1);
1040 } 1183 }
1041 1184
1042 w->at = w->repeat; 1185 ((WT)w)->at = w->repeat;
1043 1186
1044 ev_stop (EV_A_ (W)w); 1187 ev_stop (EV_A_ (W)w);
1045} 1188}
1046 1189
1047void 1190void
1049{ 1192{
1050 if (ev_is_active (w)) 1193 if (ev_is_active (w))
1051 { 1194 {
1052 if (w->repeat) 1195 if (w->repeat)
1053 { 1196 {
1054 w->at = mn_now + w->repeat; 1197 ((WT)w)->at = mn_now + w->repeat;
1055 downheap ((WT *)timers, timercnt, w->active - 1); 1198 downheap ((WT *)timers, timercnt, ((W)w)->active - 1);
1056 } 1199 }
1057 else 1200 else
1058 ev_timer_stop (EV_A_ w); 1201 ev_timer_stop (EV_A_ w);
1059 } 1202 }
1060 else if (w->repeat) 1203 else if (w->repeat)
1069 1212
1070 assert (("ev_periodic_start called with negative interval value", w->interval >= 0.)); 1213 assert (("ev_periodic_start called with negative interval value", w->interval >= 0.));
1071 1214
1072 /* this formula differs from the one in periodic_reify because we do not always round up */ 1215 /* this formula differs from the one in periodic_reify because we do not always round up */
1073 if (w->interval) 1216 if (w->interval)
1074 w->at += ceil ((rt_now - w->at) / w->interval) * w->interval; 1217 ((WT)w)->at += ceil ((rt_now - ((WT)w)->at) / w->interval) * w->interval;
1075 1218
1076 ev_start (EV_A_ (W)w, ++periodiccnt); 1219 ev_start (EV_A_ (W)w, ++periodiccnt);
1077 array_needsize (periodics, periodicmax, periodiccnt, ); 1220 array_needsize (periodics, periodicmax, periodiccnt, );
1078 periodics [periodiccnt - 1] = w; 1221 periodics [periodiccnt - 1] = w;
1079 upheap ((WT *)periodics, periodiccnt - 1); 1222 upheap ((WT *)periodics, periodiccnt - 1);
1223
1224 assert (("internal periodic heap corruption", periodics [((W)w)->active - 1] == w));
1080} 1225}
1081 1226
1082void 1227void
1083ev_periodic_stop (EV_P_ struct ev_periodic *w) 1228ev_periodic_stop (EV_P_ struct ev_periodic *w)
1084{ 1229{
1085 ev_clear_pending (EV_A_ (W)w); 1230 ev_clear_pending (EV_A_ (W)w);
1086 if (!ev_is_active (w)) 1231 if (!ev_is_active (w))
1087 return; 1232 return;
1088 1233
1234 assert (("internal periodic heap corruption", periodics [((W)w)->active - 1] == w));
1235
1089 if (w->active < periodiccnt--) 1236 if (((W)w)->active < periodiccnt--)
1090 { 1237 {
1091 periodics [w->active - 1] = periodics [periodiccnt]; 1238 periodics [((W)w)->active - 1] = periodics [periodiccnt];
1092 downheap ((WT *)periodics, periodiccnt, w->active - 1); 1239 downheap ((WT *)periodics, periodiccnt, ((W)w)->active - 1);
1093 } 1240 }
1094 1241
1242 ev_stop (EV_A_ (W)w);
1243}
1244
1245void
1246ev_idle_start (EV_P_ struct ev_idle *w)
1247{
1248 if (ev_is_active (w))
1249 return;
1250
1251 ev_start (EV_A_ (W)w, ++idlecnt);
1252 array_needsize (idles, idlemax, idlecnt, );
1253 idles [idlecnt - 1] = w;
1254}
1255
1256void
1257ev_idle_stop (EV_P_ struct ev_idle *w)
1258{
1259 ev_clear_pending (EV_A_ (W)w);
1260 if (ev_is_active (w))
1261 return;
1262
1263 idles [((W)w)->active - 1] = idles [--idlecnt];
1264 ev_stop (EV_A_ (W)w);
1265}
1266
1267void
1268ev_prepare_start (EV_P_ struct ev_prepare *w)
1269{
1270 if (ev_is_active (w))
1271 return;
1272
1273 ev_start (EV_A_ (W)w, ++preparecnt);
1274 array_needsize (prepares, preparemax, preparecnt, );
1275 prepares [preparecnt - 1] = w;
1276}
1277
1278void
1279ev_prepare_stop (EV_P_ struct ev_prepare *w)
1280{
1281 ev_clear_pending (EV_A_ (W)w);
1282 if (ev_is_active (w))
1283 return;
1284
1285 prepares [((W)w)->active - 1] = prepares [--preparecnt];
1286 ev_stop (EV_A_ (W)w);
1287}
1288
1289void
1290ev_check_start (EV_P_ struct ev_check *w)
1291{
1292 if (ev_is_active (w))
1293 return;
1294
1295 ev_start (EV_A_ (W)w, ++checkcnt);
1296 array_needsize (checks, checkmax, checkcnt, );
1297 checks [checkcnt - 1] = w;
1298}
1299
1300void
1301ev_check_stop (EV_P_ struct ev_check *w)
1302{
1303 ev_clear_pending (EV_A_ (W)w);
1304 if (ev_is_active (w))
1305 return;
1306
1307 checks [((W)w)->active - 1] = checks [--checkcnt];
1095 ev_stop (EV_A_ (W)w); 1308 ev_stop (EV_A_ (W)w);
1096} 1309}
1097 1310
1098#ifndef SA_RESTART 1311#ifndef SA_RESTART
1099# define SA_RESTART 0 1312# define SA_RESTART 0
1100#endif 1313#endif
1101 1314
1102void 1315void
1103ev_signal_start (EV_P_ struct ev_signal *w) 1316ev_signal_start (EV_P_ struct ev_signal *w)
1104{ 1317{
1318#if EV_MULTIPLICITY
1319 assert (("signal watchers are only supported in the default loop", loop == default_loop));
1320#endif
1105 if (ev_is_active (w)) 1321 if (ev_is_active (w))
1106 return; 1322 return;
1107 1323
1108 assert (("ev_signal_start called with illegal signal number", w->signum > 0)); 1324 assert (("ev_signal_start called with illegal signal number", w->signum > 0));
1109 1325
1110 ev_start (EV_A_ (W)w, 1); 1326 ev_start (EV_A_ (W)w, 1);
1111 array_needsize (signals, signalmax, w->signum, signals_init); 1327 array_needsize (signals, signalmax, w->signum, signals_init);
1112 wlist_add ((WL *)&signals [w->signum - 1].head, (WL)w); 1328 wlist_add ((WL *)&signals [w->signum - 1].head, (WL)w);
1113 1329
1114 if (!w->next) 1330 if (!((WL)w)->next)
1115 { 1331 {
1332#if WIN32
1333 signal (w->signum, sighandler);
1334#else
1116 struct sigaction sa; 1335 struct sigaction sa;
1117 sa.sa_handler = sighandler; 1336 sa.sa_handler = sighandler;
1118 sigfillset (&sa.sa_mask); 1337 sigfillset (&sa.sa_mask);
1119 sa.sa_flags = SA_RESTART; /* if restarting works we save one iteration */ 1338 sa.sa_flags = SA_RESTART; /* if restarting works we save one iteration */
1120 sigaction (w->signum, &sa, 0); 1339 sigaction (w->signum, &sa, 0);
1340#endif
1121 } 1341 }
1122} 1342}
1123 1343
1124void 1344void
1125ev_signal_stop (EV_P_ struct ev_signal *w) 1345ev_signal_stop (EV_P_ struct ev_signal *w)
1134 if (!signals [w->signum - 1].head) 1354 if (!signals [w->signum - 1].head)
1135 signal (w->signum, SIG_DFL); 1355 signal (w->signum, SIG_DFL);
1136} 1356}
1137 1357
1138void 1358void
1139ev_idle_start (EV_P_ struct ev_idle *w)
1140{
1141 if (ev_is_active (w))
1142 return;
1143
1144 ev_start (EV_A_ (W)w, ++idlecnt);
1145 array_needsize (idles, idlemax, idlecnt, );
1146 idles [idlecnt - 1] = w;
1147}
1148
1149void
1150ev_idle_stop (EV_P_ struct ev_idle *w)
1151{
1152 ev_clear_pending (EV_A_ (W)w);
1153 if (ev_is_active (w))
1154 return;
1155
1156 idles [w->active - 1] = idles [--idlecnt];
1157 ev_stop (EV_A_ (W)w);
1158}
1159
1160void
1161ev_prepare_start (EV_P_ struct ev_prepare *w)
1162{
1163 if (ev_is_active (w))
1164 return;
1165
1166 ev_start (EV_A_ (W)w, ++preparecnt);
1167 array_needsize (prepares, preparemax, preparecnt, );
1168 prepares [preparecnt - 1] = w;
1169}
1170
1171void
1172ev_prepare_stop (EV_P_ struct ev_prepare *w)
1173{
1174 ev_clear_pending (EV_A_ (W)w);
1175 if (ev_is_active (w))
1176 return;
1177
1178 prepares [w->active - 1] = prepares [--preparecnt];
1179 ev_stop (EV_A_ (W)w);
1180}
1181
1182void
1183ev_check_start (EV_P_ struct ev_check *w)
1184{
1185 if (ev_is_active (w))
1186 return;
1187
1188 ev_start (EV_A_ (W)w, ++checkcnt);
1189 array_needsize (checks, checkmax, checkcnt, );
1190 checks [checkcnt - 1] = w;
1191}
1192
1193void
1194ev_check_stop (EV_P_ struct ev_check *w)
1195{
1196 ev_clear_pending (EV_A_ (W)w);
1197 if (ev_is_active (w))
1198 return;
1199
1200 checks [w->active - 1] = checks [--checkcnt];
1201 ev_stop (EV_A_ (W)w);
1202}
1203
1204void
1205ev_child_start (EV_P_ struct ev_child *w) 1359ev_child_start (EV_P_ struct ev_child *w)
1206{ 1360{
1361#if EV_MULTIPLICITY
1362 assert (("child watchers are only supported in the default loop", loop == default_loop));
1363#endif
1207 if (ev_is_active (w)) 1364 if (ev_is_active (w))
1208 return; 1365 return;
1209 1366
1210 ev_start (EV_A_ (W)w, 1); 1367 ev_start (EV_A_ (W)w, 1);
1211 wlist_add ((WL *)&childs [w->pid & (PID_HASHSIZE - 1)], (WL)w); 1368 wlist_add ((WL *)&childs [w->pid & (PID_HASHSIZE - 1)], (WL)w);
1283 ev_timer_start (EV_A_ &once->to); 1440 ev_timer_start (EV_A_ &once->to);
1284 } 1441 }
1285 } 1442 }
1286} 1443}
1287 1444
1288/*****************************************************************************/
1289
1290#if 0
1291
1292struct ev_io wio;
1293
1294static void
1295sin_cb (struct ev_io *w, int revents)
1296{
1297 fprintf (stderr, "sin %d, revents %d\n", w->fd, revents);
1298}
1299
1300static void
1301ocb (struct ev_timer *w, int revents)
1302{
1303 //fprintf (stderr, "timer %f,%f (%x) (%f) d%p\n", w->at, w->repeat, revents, w->at - ev_time (), w->data);
1304 ev_timer_stop (w);
1305 ev_timer_start (w);
1306}
1307
1308static void
1309scb (struct ev_signal *w, int revents)
1310{
1311 fprintf (stderr, "signal %x,%d\n", revents, w->signum);
1312 ev_io_stop (&wio);
1313 ev_io_start (&wio);
1314}
1315
1316static void
1317gcb (struct ev_signal *w, int revents)
1318{
1319 fprintf (stderr, "generic %x\n", revents);
1320
1321}
1322
1323int main (void)
1324{
1325 ev_init (0);
1326
1327 ev_io_init (&wio, sin_cb, 0, EV_READ);
1328 ev_io_start (&wio);
1329
1330 struct ev_timer t[10000];
1331
1332#if 0
1333 int i;
1334 for (i = 0; i < 10000; ++i)
1335 {
1336 struct ev_timer *w = t + i;
1337 ev_watcher_init (w, ocb, i);
1338 ev_timer_init_abs (w, ocb, drand48 (), 0.99775533);
1339 ev_timer_start (w);
1340 if (drand48 () < 0.5)
1341 ev_timer_stop (w);
1342 }
1343#endif
1344
1345 struct ev_timer t1;
1346 ev_timer_init (&t1, ocb, 5, 10);
1347 ev_timer_start (&t1);
1348
1349 struct ev_signal sig;
1350 ev_signal_init (&sig, scb, SIGQUIT);
1351 ev_signal_start (&sig);
1352
1353 struct ev_check cw;
1354 ev_check_init (&cw, gcb);
1355 ev_check_start (&cw);
1356
1357 struct ev_idle iw;
1358 ev_idle_init (&iw, gcb);
1359 ev_idle_start (&iw);
1360
1361 ev_loop (0);
1362
1363 return 0;
1364}
1365
1366#endif
1367
1368
1369
1370

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