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Comparing libev/ev.c (file contents):
Revision 1.64 by root, Sun Nov 4 23:14:11 2007 UTC vs.
Revision 1.81 by root, Fri Nov 9 17:07:59 2007 UTC

… …
54 54
55#endif 55#endif
56 56
57#include <math.h> 57#include <math.h>
58#include <stdlib.h> 58#include <stdlib.h>
59#include <unistd.h>
60#include <fcntl.h> 59#include <fcntl.h>
61#include <signal.h>
62#include <stddef.h> 60#include <stddef.h>
63 61
64#include <stdio.h> 62#include <stdio.h>
65 63
66#include <assert.h> 64#include <assert.h>
67#include <errno.h> 65#include <errno.h>
68#include <sys/types.h> 66#include <sys/types.h>
67#include <time.h>
68
69#include <signal.h>
70
69#ifndef WIN32 71#ifndef WIN32
72# include <unistd.h>
73# include <sys/time.h>
70# include <sys/wait.h> 74# include <sys/wait.h>
71#endif 75#endif
72#include <sys/time.h>
73#include <time.h>
74
75/**/ 76/**/
76 77
77#ifndef EV_USE_MONOTONIC 78#ifndef EV_USE_MONOTONIC
78# define EV_USE_MONOTONIC 1 79# define EV_USE_MONOTONIC 1
79#endif 80#endif
… …
94# define EV_USE_KQUEUE 0 95# define EV_USE_KQUEUE 0
95#endif 96#endif
96 97
97#ifndef EV_USE_WIN32 98#ifndef EV_USE_WIN32
98# ifdef WIN32 99# ifdef WIN32
100# define EV_USE_WIN32 0 /* it does not exist, use select */
101# undef EV_USE_SELECT
99# define EV_USE_WIN32 1 102# define EV_USE_SELECT 1
100# else 103# else
101# define EV_USE_WIN32 0 104# define EV_USE_WIN32 0
102# endif 105# endif
103#endif 106#endif
104 107
… …
123#define MIN_TIMEJUMP 1. /* minimum timejump that gets detected (if monotonic clock available) */ 126#define MIN_TIMEJUMP 1. /* minimum timejump that gets detected (if monotonic clock available) */
124#define MAX_BLOCKTIME 59.731 /* never wait longer than this time (to detect time jumps) */ 127#define MAX_BLOCKTIME 59.731 /* never wait longer than this time (to detect time jumps) */
125#define PID_HASHSIZE 16 /* size of pid hash table, must be power of two */ 128#define PID_HASHSIZE 16 /* size of pid hash table, must be power of two */
126/*#define CLEANUP_INTERVAL 300. /* how often to try to free memory and re-check fds */ 129/*#define CLEANUP_INTERVAL 300. /* how often to try to free memory and re-check fds */
127 130
131#ifdef EV_H
132# include EV_H
133#else
128#include "ev.h" 134# include "ev.h"
135#endif
129 136
130#if __GNUC__ >= 3 137#if __GNUC__ >= 3
131# define expect(expr,value) __builtin_expect ((expr),(value)) 138# define expect(expr,value) __builtin_expect ((expr),(value))
132# define inline inline 139# define inline inline
133#else 140#else
… …
145typedef struct ev_watcher_list *WL; 152typedef struct ev_watcher_list *WL;
146typedef struct ev_watcher_time *WT; 153typedef struct ev_watcher_time *WT;
147 154
148static int have_monotonic; /* did clock_gettime (CLOCK_MONOTONIC) work? */ 155static int have_monotonic; /* did clock_gettime (CLOCK_MONOTONIC) work? */
149 156
157#include "ev_win32.c"
158
150/*****************************************************************************/ 159/*****************************************************************************/
151 160
161static void (*syserr_cb)(const char *msg);
162
163void ev_set_syserr_cb (void (*cb)(const char *msg))
164{
165 syserr_cb = cb;
166}
167
168static void
169syserr (const char *msg)
170{
171 if (!msg)
172 msg = "(libev) system error";
173
174 if (syserr_cb)
175 syserr_cb (msg);
176 else
177 {
178 perror (msg);
179 abort ();
180 }
181}
182
183static void *(*alloc)(void *ptr, long size);
184
185void ev_set_allocator (void *(*cb)(void *ptr, long size))
186{
187 alloc = cb;
188}
189
190static void *
191ev_realloc (void *ptr, long size)
192{
193 ptr = alloc ? alloc (ptr, size) : realloc (ptr, size);
194
195 if (!ptr && size)
196 {
197 fprintf (stderr, "libev: cannot allocate %ld bytes, aborting.", size);
198 abort ();
199 }
200
201 return ptr;
202}
203
204#define ev_malloc(size) ev_realloc (0, (size))
205#define ev_free(ptr) ev_realloc ((ptr), 0)
206
207/*****************************************************************************/
208
152typedef struct 209typedef struct
153{ 210{
154 struct ev_watcher_list *head; 211 WL head;
155 unsigned char events; 212 unsigned char events;
156 unsigned char reify; 213 unsigned char reify;
157} ANFD; 214} ANFD;
158 215
159typedef struct 216typedef struct
… …
162 int events; 219 int events;
163} ANPENDING; 220} ANPENDING;
164 221
165#if EV_MULTIPLICITY 222#if EV_MULTIPLICITY
166 223
167struct ev_loop 224 struct ev_loop
168{ 225 {
169# define VAR(name,decl) decl; 226 #define VAR(name,decl) decl;
170# include "ev_vars.h" 227 #include "ev_vars.h"
171};
172# undef VAR 228 #undef VAR
229 };
173# include "ev_wrap.h" 230 #include "ev_wrap.h"
231
232 struct ev_loop default_loop_struct;
233 static struct ev_loop *default_loop;
174 234
175#else 235#else
176 236
177# define VAR(name,decl) static decl; 237 #define VAR(name,decl) static decl;
178# include "ev_vars.h" 238 #include "ev_vars.h"
179# undef VAR 239 #undef VAR
240
241 static int default_loop;
180 242
181#endif 243#endif
182 244
183/*****************************************************************************/ 245/*****************************************************************************/
184 246
… …
215ev_now (EV_P) 277ev_now (EV_P)
216{ 278{
217 return rt_now; 279 return rt_now;
218} 280}
219 281
220#define array_roundsize(base,n) ((n) | 4 & ~3) 282#define array_roundsize(type,n) ((n) | 4 & ~3)
221 283
222#define array_needsize(base,cur,cnt,init) \ 284#define array_needsize(type,base,cur,cnt,init) \
223 if (expect_false ((cnt) > cur)) \ 285 if (expect_false ((cnt) > cur)) \
224 { \ 286 { \
225 int newcnt = cur; \ 287 int newcnt = cur; \
226 do \ 288 do \
227 { \ 289 { \
228 newcnt = array_roundsize (base, newcnt << 1); \ 290 newcnt = array_roundsize (type, newcnt << 1); \
229 } \ 291 } \
230 while ((cnt) > newcnt); \ 292 while ((cnt) > newcnt); \
231 \ 293 \
232 base = realloc (base, sizeof (*base) * (newcnt)); \ 294 base = (type *)ev_realloc (base, sizeof (type) * (newcnt));\
233 init (base + cur, newcnt - cur); \ 295 init (base + cur, newcnt - cur); \
234 cur = newcnt; \ 296 cur = newcnt; \
235 } 297 }
298
299#define array_slim(type,stem) \
300 if (stem ## max < array_roundsize (stem ## cnt >> 2)) \
301 { \
302 stem ## max = array_roundsize (stem ## cnt >> 1); \
303 base = (type *)ev_realloc (base, sizeof (type) * (stem ## max));\
304 fprintf (stderr, "slimmed down " # stem " to %d\n", stem ## max);/*D*/\
305 }
306
307/* microsoft's pseudo-c is quite far from C as the rest of the world and the standard knows it */
308/* bringing us everlasting joy in form of stupid extra macros that are not required in C */
309#define array_free_microshit(stem) \
310 ev_free (stem ## s); stem ## cnt = stem ## max = 0;
311
312#define array_free(stem, idx) \
313 ev_free (stem ## s idx); stem ## cnt idx = stem ## max idx = 0;
236 314
237/*****************************************************************************/ 315/*****************************************************************************/
238 316
239static void 317static void
240anfds_init (ANFD *base, int count) 318anfds_init (ANFD *base, int count)
… …
247 325
248 ++base; 326 ++base;
249 } 327 }
250} 328}
251 329
252static void 330void
253event (EV_P_ W w, int events) 331ev_feed_event (EV_P_ void *w, int revents)
254{ 332{
333 W w_ = (W)w;
334
255 if (w->pending) 335 if (w_->pending)
256 { 336 {
257 pendings [ABSPRI (w)][w->pending - 1].events |= events; 337 pendings [ABSPRI (w_)][w_->pending - 1].events |= revents;
258 return; 338 return;
259 } 339 }
260 340
261 w->pending = ++pendingcnt [ABSPRI (w)]; 341 w_->pending = ++pendingcnt [ABSPRI (w_)];
262 array_needsize (pendings [ABSPRI (w)], pendingmax [ABSPRI (w)], pendingcnt [ABSPRI (w)], ); 342 array_needsize (ANPENDING, pendings [ABSPRI (w_)], pendingmax [ABSPRI (w_)], pendingcnt [ABSPRI (w_)], (void));
263 pendings [ABSPRI (w)][w->pending - 1].w = w; 343 pendings [ABSPRI (w_)][w_->pending - 1].w = w_;
264 pendings [ABSPRI (w)][w->pending - 1].events = events; 344 pendings [ABSPRI (w_)][w_->pending - 1].events = revents;
265} 345}
266 346
267static void 347static void
268queue_events (EV_P_ W *events, int eventcnt, int type) 348queue_events (EV_P_ W *events, int eventcnt, int type)
269{ 349{
270 int i; 350 int i;
271 351
272 for (i = 0; i < eventcnt; ++i) 352 for (i = 0; i < eventcnt; ++i)
273 event (EV_A_ events [i], type); 353 ev_feed_event (EV_A_ events [i], type);
274} 354}
275 355
276static void 356inline void
277fd_event (EV_P_ int fd, int events) 357fd_event (EV_P_ int fd, int revents)
278{ 358{
279 ANFD *anfd = anfds + fd; 359 ANFD *anfd = anfds + fd;
280 struct ev_io *w; 360 struct ev_io *w;
281 361
282 for (w = (struct ev_io *)anfd->head; w; w = (struct ev_io *)((WL)w)->next) 362 for (w = (struct ev_io *)anfd->head; w; w = (struct ev_io *)((WL)w)->next)
283 { 363 {
284 int ev = w->events & events; 364 int ev = w->events & revents;
285 365
286 if (ev) 366 if (ev)
287 event (EV_A_ (W)w, ev); 367 ev_feed_event (EV_A_ (W)w, ev);
288 } 368 }
369}
370
371void
372ev_feed_fd_event (EV_P_ int fd, int revents)
373{
374 fd_event (EV_A_ fd, revents);
289} 375}
290 376
291/*****************************************************************************/ 377/*****************************************************************************/
292 378
293static void 379static void
… …
316} 402}
317 403
318static void 404static void
319fd_change (EV_P_ int fd) 405fd_change (EV_P_ int fd)
320{ 406{
321 if (anfds [fd].reify || fdchangecnt < 0) 407 if (anfds [fd].reify)
322 return; 408 return;
323 409
324 anfds [fd].reify = 1; 410 anfds [fd].reify = 1;
325 411
326 ++fdchangecnt; 412 ++fdchangecnt;
327 array_needsize (fdchanges, fdchangemax, fdchangecnt, ); 413 array_needsize (int, fdchanges, fdchangemax, fdchangecnt, (void));
328 fdchanges [fdchangecnt - 1] = fd; 414 fdchanges [fdchangecnt - 1] = fd;
329} 415}
330 416
331static void 417static void
332fd_kill (EV_P_ int fd) 418fd_kill (EV_P_ int fd)
… …
334 struct ev_io *w; 420 struct ev_io *w;
335 421
336 while ((w = (struct ev_io *)anfds [fd].head)) 422 while ((w = (struct ev_io *)anfds [fd].head))
337 { 423 {
338 ev_io_stop (EV_A_ w); 424 ev_io_stop (EV_A_ w);
339 event (EV_A_ (W)w, EV_ERROR | EV_READ | EV_WRITE); 425 ev_feed_event (EV_A_ (W)w, EV_ERROR | EV_READ | EV_WRITE);
340 } 426 }
427}
428
429static int
430fd_valid (int fd)
431{
432#ifdef WIN32
433 return !!win32_get_osfhandle (fd);
434#else
435 return fcntl (fd, F_GETFD) != -1;
436#endif
341} 437}
342 438
343/* called on EBADF to verify fds */ 439/* called on EBADF to verify fds */
344static void 440static void
345fd_ebadf (EV_P) 441fd_ebadf (EV_P)
346{ 442{
347 int fd; 443 int fd;
348 444
349 for (fd = 0; fd < anfdmax; ++fd) 445 for (fd = 0; fd < anfdmax; ++fd)
350 if (anfds [fd].events) 446 if (anfds [fd].events)
351 if (fcntl (fd, F_GETFD) == -1 && errno == EBADF) 447 if (!fd_valid (fd) == -1 && errno == EBADF)
352 fd_kill (EV_A_ fd); 448 fd_kill (EV_A_ fd);
353} 449}
354 450
355/* called on ENOMEM in select/poll to kill some fds and retry */ 451/* called on ENOMEM in select/poll to kill some fds and retry */
356static void 452static void
… …
359 int fd; 455 int fd;
360 456
361 for (fd = anfdmax; fd--; ) 457 for (fd = anfdmax; fd--; )
362 if (anfds [fd].events) 458 if (anfds [fd].events)
363 { 459 {
364 close (fd);
365 fd_kill (EV_A_ fd); 460 fd_kill (EV_A_ fd);
366 return; 461 return;
367 } 462 }
368} 463}
369 464
370/* susually called after fork if method needs to re-arm all fds from scratch */ 465/* usually called after fork if method needs to re-arm all fds from scratch */
371static void 466static void
372fd_rearm_all (EV_P) 467fd_rearm_all (EV_P)
373{ 468{
374 int fd; 469 int fd;
375 470
… …
427 522
428/*****************************************************************************/ 523/*****************************************************************************/
429 524
430typedef struct 525typedef struct
431{ 526{
432 struct ev_watcher_list *head; 527 WL head;
433 sig_atomic_t volatile gotsig; 528 sig_atomic_t volatile gotsig;
434} ANSIG; 529} ANSIG;
435 530
436static ANSIG *signals; 531static ANSIG *signals;
437static int signalmax; 532static int signalmax;
… …
453} 548}
454 549
455static void 550static void
456sighandler (int signum) 551sighandler (int signum)
457{ 552{
553#if WIN32
554 signal (signum, sighandler);
555#endif
556
458 signals [signum - 1].gotsig = 1; 557 signals [signum - 1].gotsig = 1;
459 558
460 if (!gotsig) 559 if (!gotsig)
461 { 560 {
462 int old_errno = errno; 561 int old_errno = errno;
463 gotsig = 1; 562 gotsig = 1;
563#ifdef WIN32
564 send (sigpipe [1], &signum, 1, MSG_DONTWAIT);
565#else
464 write (sigpipe [1], &signum, 1); 566 write (sigpipe [1], &signum, 1);
567#endif
465 errno = old_errno; 568 errno = old_errno;
466 } 569 }
467} 570}
468 571
572void
573ev_feed_signal_event (EV_P_ int signum)
574{
575 WL w;
576
577#if EV_MULTIPLICITY
578 assert (("feeding signal events is only supported in the default loop", loop == default_loop));
579#endif
580
581 --signum;
582
583 if (signum < 0 || signum >= signalmax)
584 return;
585
586 signals [signum].gotsig = 0;
587
588 for (w = signals [signum].head; w; w = w->next)
589 ev_feed_event (EV_A_ (W)w, EV_SIGNAL);
590}
591
469static void 592static void
470sigcb (EV_P_ struct ev_io *iow, int revents) 593sigcb (EV_P_ struct ev_io *iow, int revents)
471{ 594{
472 struct ev_watcher_list *w;
473 int signum; 595 int signum;
474 596
597#ifdef WIN32
598 recv (sigpipe [0], &revents, 1, MSG_DONTWAIT);
599#else
475 read (sigpipe [0], &revents, 1); 600 read (sigpipe [0], &revents, 1);
601#endif
476 gotsig = 0; 602 gotsig = 0;
477 603
478 for (signum = signalmax; signum--; ) 604 for (signum = signalmax; signum--; )
479 if (signals [signum].gotsig) 605 if (signals [signum].gotsig)
480 { 606 ev_feed_signal_event (EV_A_ signum + 1);
481 signals [signum].gotsig = 0;
482
483 for (w = signals [signum].head; w; w = w->next)
484 event (EV_A_ (W)w, EV_SIGNAL);
485 }
486} 607}
487 608
488static void 609static void
489siginit (EV_P) 610siginit (EV_P)
490{ 611{
… …
502 ev_unref (EV_A); /* child watcher should not keep loop alive */ 623 ev_unref (EV_A); /* child watcher should not keep loop alive */
503} 624}
504 625
505/*****************************************************************************/ 626/*****************************************************************************/
506 627
628static struct ev_child *childs [PID_HASHSIZE];
629
507#ifndef WIN32 630#ifndef WIN32
508 631
509static struct ev_child *childs [PID_HASHSIZE];
510static struct ev_signal childev; 632static struct ev_signal childev;
511 633
512#ifndef WCONTINUED 634#ifndef WCONTINUED
513# define WCONTINUED 0 635# define WCONTINUED 0
514#endif 636#endif
… …
522 if (w->pid == pid || !w->pid) 644 if (w->pid == pid || !w->pid)
523 { 645 {
524 ev_priority (w) = ev_priority (sw); /* need to do it *now* */ 646 ev_priority (w) = ev_priority (sw); /* need to do it *now* */
525 w->rpid = pid; 647 w->rpid = pid;
526 w->rstatus = status; 648 w->rstatus = status;
527 event (EV_A_ (W)w, EV_CHILD); 649 ev_feed_event (EV_A_ (W)w, EV_CHILD);
528 } 650 }
529} 651}
530 652
531static void 653static void
532childcb (EV_P_ struct ev_signal *sw, int revents) 654childcb (EV_P_ struct ev_signal *sw, int revents)
… …
534 int pid, status; 656 int pid, status;
535 657
536 if (0 < (pid = waitpid (-1, &status, WNOHANG | WUNTRACED | WCONTINUED))) 658 if (0 < (pid = waitpid (-1, &status, WNOHANG | WUNTRACED | WCONTINUED)))
537 { 659 {
538 /* make sure we are called again until all childs have been reaped */ 660 /* make sure we are called again until all childs have been reaped */
539 event (EV_A_ (W)sw, EV_SIGNAL); 661 ev_feed_event (EV_A_ (W)sw, EV_SIGNAL);
540 662
541 child_reap (EV_A_ sw, pid, pid, status); 663 child_reap (EV_A_ sw, pid, pid, status);
542 child_reap (EV_A_ sw, 0, pid, status); /* this might trigger a watcher twice, but event catches that */ 664 child_reap (EV_A_ sw, 0, pid, status); /* this might trigger a watcher twice, but event catches that */
543 } 665 }
544} 666}
… …
628 if (!method && (methods & EVMETHOD_POLL )) method = poll_init (EV_A_ methods); 750 if (!method && (methods & EVMETHOD_POLL )) method = poll_init (EV_A_ methods);
629#endif 751#endif
630#if EV_USE_SELECT 752#if EV_USE_SELECT
631 if (!method && (methods & EVMETHOD_SELECT)) method = select_init (EV_A_ methods); 753 if (!method && (methods & EVMETHOD_SELECT)) method = select_init (EV_A_ methods);
632#endif 754#endif
755
756 ev_watcher_init (&sigev, sigcb);
757 ev_set_priority (&sigev, EV_MAXPRI);
633 } 758 }
634} 759}
635 760
636void 761void
637loop_destroy (EV_P) 762loop_destroy (EV_P)
638{ 763{
764 int i;
765
639#if EV_USE_WIN32 766#if EV_USE_WIN32
640 if (method == EVMETHOD_WIN32 ) win32_destroy (EV_A); 767 if (method == EVMETHOD_WIN32 ) win32_destroy (EV_A);
641#endif 768#endif
642#if EV_USE_KQUEUE 769#if EV_USE_KQUEUE
643 if (method == EVMETHOD_KQUEUE) kqueue_destroy (EV_A); 770 if (method == EVMETHOD_KQUEUE) kqueue_destroy (EV_A);
… …
650#endif 777#endif
651#if EV_USE_SELECT 778#if EV_USE_SELECT
652 if (method == EVMETHOD_SELECT) select_destroy (EV_A); 779 if (method == EVMETHOD_SELECT) select_destroy (EV_A);
653#endif 780#endif
654 781
782 for (i = NUMPRI; i--; )
783 array_free (pending, [i]);
784
785 /* have to use the microsoft-never-gets-it-right macro */
786 array_free_microshit (fdchange);
787 array_free_microshit (timer);
788 array_free_microshit (periodic);
789 array_free_microshit (idle);
790 array_free_microshit (prepare);
791 array_free_microshit (check);
792
655 method = 0; 793 method = 0;
656 /*TODO*/
657} 794}
658 795
659void 796static void
660loop_fork (EV_P) 797loop_fork (EV_P)
661{ 798{
662 /*TODO*/
663#if EV_USE_EPOLL 799#if EV_USE_EPOLL
664 if (method == EVMETHOD_EPOLL ) epoll_fork (EV_A); 800 if (method == EVMETHOD_EPOLL ) epoll_fork (EV_A);
665#endif 801#endif
666#if EV_USE_KQUEUE 802#if EV_USE_KQUEUE
667 if (method == EVMETHOD_KQUEUE) kqueue_fork (EV_A); 803 if (method == EVMETHOD_KQUEUE) kqueue_fork (EV_A);
668#endif 804#endif
805
806 if (ev_is_active (&sigev))
807 {
808 /* default loop */
809
810 ev_ref (EV_A);
811 ev_io_stop (EV_A_ &sigev);
812 close (sigpipe [0]);
813 close (sigpipe [1]);
814
815 while (pipe (sigpipe))
816 syserr ("(libev) error creating pipe");
817
818 siginit (EV_A);
819 }
820
821 postfork = 0;
669} 822}
670 823
671#if EV_MULTIPLICITY 824#if EV_MULTIPLICITY
672struct ev_loop * 825struct ev_loop *
673ev_loop_new (int methods) 826ev_loop_new (int methods)
674{ 827{
675 struct ev_loop *loop = (struct ev_loop *)calloc (1, sizeof (struct ev_loop)); 828 struct ev_loop *loop = (struct ev_loop *)ev_malloc (sizeof (struct ev_loop));
829
830 memset (loop, 0, sizeof (struct ev_loop));
676 831
677 loop_init (EV_A_ methods); 832 loop_init (EV_A_ methods);
678 833
679 if (ev_method (EV_A)) 834 if (ev_method (EV_A))
680 return loop; 835 return loop;
… …
684 839
685void 840void
686ev_loop_destroy (EV_P) 841ev_loop_destroy (EV_P)
687{ 842{
688 loop_destroy (EV_A); 843 loop_destroy (EV_A);
689 free (loop); 844 ev_free (loop);
690} 845}
691 846
692void 847void
693ev_loop_fork (EV_P) 848ev_loop_fork (EV_P)
694{ 849{
695 loop_fork (EV_A); 850 postfork = 1;
696} 851}
697 852
698#endif 853#endif
699 854
700#if EV_MULTIPLICITY 855#if EV_MULTIPLICITY
701struct ev_loop default_loop_struct;
702static struct ev_loop *default_loop;
703
704struct ev_loop * 856struct ev_loop *
705#else 857#else
706static int default_loop;
707
708int 858int
709#endif 859#endif
710ev_default_loop (int methods) 860ev_default_loop (int methods)
711{ 861{
712 if (sigpipe [0] == sigpipe [1]) 862 if (sigpipe [0] == sigpipe [1])
… …
723 873
724 loop_init (EV_A_ methods); 874 loop_init (EV_A_ methods);
725 875
726 if (ev_method (EV_A)) 876 if (ev_method (EV_A))
727 { 877 {
728 ev_watcher_init (&sigev, sigcb);
729 ev_set_priority (&sigev, EV_MAXPRI);
730 siginit (EV_A); 878 siginit (EV_A);
731 879
732#ifndef WIN32 880#ifndef WIN32
733 ev_signal_init (&childev, childcb, SIGCHLD); 881 ev_signal_init (&childev, childcb, SIGCHLD);
734 ev_set_priority (&childev, EV_MAXPRI); 882 ev_set_priority (&childev, EV_MAXPRI);
… …
748{ 896{
749#if EV_MULTIPLICITY 897#if EV_MULTIPLICITY
750 struct ev_loop *loop = default_loop; 898 struct ev_loop *loop = default_loop;
751#endif 899#endif
752 900
901#ifndef WIN32
753 ev_ref (EV_A); /* child watcher */ 902 ev_ref (EV_A); /* child watcher */
754 ev_signal_stop (EV_A_ &childev); 903 ev_signal_stop (EV_A_ &childev);
904#endif
755 905
756 ev_ref (EV_A); /* signal watcher */ 906 ev_ref (EV_A); /* signal watcher */
757 ev_io_stop (EV_A_ &sigev); 907 ev_io_stop (EV_A_ &sigev);
758 908
759 close (sigpipe [0]); sigpipe [0] = 0; 909 close (sigpipe [0]); sigpipe [0] = 0;
… …
767{ 917{
768#if EV_MULTIPLICITY 918#if EV_MULTIPLICITY
769 struct ev_loop *loop = default_loop; 919 struct ev_loop *loop = default_loop;
770#endif 920#endif
771 921
772 loop_fork (EV_A); 922 if (method)
773 923 postfork = 1;
774 ev_io_stop (EV_A_ &sigev);
775 close (sigpipe [0]);
776 close (sigpipe [1]);
777 pipe (sigpipe);
778
779 ev_ref (EV_A); /* signal watcher */
780 siginit (EV_A);
781} 924}
782 925
783/*****************************************************************************/ 926/*****************************************************************************/
927
928static int
929any_pending (EV_P)
930{
931 int pri;
932
933 for (pri = NUMPRI; pri--; )
934 if (pendingcnt [pri])
935 return 1;
936
937 return 0;
938}
784 939
785static void 940static void
786call_pending (EV_P) 941call_pending (EV_P)
787{ 942{
788 int pri; 943 int pri;
… …
793 ANPENDING *p = pendings [pri] + --pendingcnt [pri]; 948 ANPENDING *p = pendings [pri] + --pendingcnt [pri];
794 949
795 if (p->w) 950 if (p->w)
796 { 951 {
797 p->w->pending = 0; 952 p->w->pending = 0;
798
799 (*(void (**)(EV_P_ W, int))&p->w->cb) (EV_A_ p->w, p->events); 953 p->w->cb (EV_A_ p->w, p->events);
800 } 954 }
801 } 955 }
802} 956}
803 957
804static void 958static void
… …
818 downheap ((WT *)timers, timercnt, 0); 972 downheap ((WT *)timers, timercnt, 0);
819 } 973 }
820 else 974 else
821 ev_timer_stop (EV_A_ w); /* nonrepeating: stop timer */ 975 ev_timer_stop (EV_A_ w); /* nonrepeating: stop timer */
822 976
823 event (EV_A_ (W)w, EV_TIMEOUT); 977 ev_feed_event (EV_A_ (W)w, EV_TIMEOUT);
824 } 978 }
825} 979}
826 980
827static void 981static void
828periodics_reify (EV_P) 982periodics_reify (EV_P)
… …
832 struct ev_periodic *w = periodics [0]; 986 struct ev_periodic *w = periodics [0];
833 987
834 assert (("inactive timer on periodic heap detected", ev_is_active (w))); 988 assert (("inactive timer on periodic heap detected", ev_is_active (w)));
835 989
836 /* first reschedule or stop timer */ 990 /* first reschedule or stop timer */
991 if (w->reschedule_cb)
992 {
993 ev_tstamp at = ((WT)w)->at = w->reschedule_cb (w, rt_now + 0.0001);
994
995 assert (("ev_periodic reschedule callback returned time in the past", ((WT)w)->at > rt_now));
996 downheap ((WT *)periodics, periodiccnt, 0);
997 }
837 if (w->interval) 998 else if (w->interval)
838 { 999 {
839 ((WT)w)->at += floor ((rt_now - ((WT)w)->at) / w->interval + 1.) * w->interval; 1000 ((WT)w)->at += floor ((rt_now - ((WT)w)->at) / w->interval + 1.) * w->interval;
840 assert (("ev_periodic timeout in the past detected while processing timers, negative interval?", ((WT)w)->at > rt_now)); 1001 assert (("ev_periodic timeout in the past detected while processing timers, negative interval?", ((WT)w)->at > rt_now));
841 downheap ((WT *)periodics, periodiccnt, 0); 1002 downheap ((WT *)periodics, periodiccnt, 0);
842 } 1003 }
843 else 1004 else
844 ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */ 1005 ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */
845 1006
846 event (EV_A_ (W)w, EV_PERIODIC); 1007 ev_feed_event (EV_A_ (W)w, EV_PERIODIC);
847 } 1008 }
848} 1009}
849 1010
850static void 1011static void
851periodics_reschedule (EV_P) 1012periodics_reschedule (EV_P)
… …
855 /* adjust periodics after time jump */ 1016 /* adjust periodics after time jump */
856 for (i = 0; i < periodiccnt; ++i) 1017 for (i = 0; i < periodiccnt; ++i)
857 { 1018 {
858 struct ev_periodic *w = periodics [i]; 1019 struct ev_periodic *w = periodics [i];
859 1020
1021 if (w->reschedule_cb)
1022 ((WT)w)->at = w->reschedule_cb (w, rt_now);
860 if (w->interval) 1023 else if (w->interval)
861 {
862 ev_tstamp diff = ceil ((rt_now - ((WT)w)->at) / w->interval) * w->interval; 1024 ((WT)w)->at += ceil ((rt_now - ((WT)w)->at) / w->interval) * w->interval;
863
864 if (fabs (diff) >= 1e-4)
865 {
866 ev_periodic_stop (EV_A_ w);
867 ev_periodic_start (EV_A_ w);
868
869 i = 0; /* restart loop, inefficient, but time jumps should be rare */
870 }
871 }
872 } 1025 }
1026
1027 /* now rebuild the heap */
1028 for (i = periodiccnt >> 1; i--; )
1029 downheap ((WT *)periodics, periodiccnt, i);
873} 1030}
874 1031
875inline int 1032inline int
876time_update_monotonic (EV_P) 1033time_update_monotonic (EV_P)
877{ 1034{
… …
964 { 1121 {
965 queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE); 1122 queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE);
966 call_pending (EV_A); 1123 call_pending (EV_A);
967 } 1124 }
968 1125
1126 /* we might have forked, so reify kernel state if necessary */
1127 if (expect_false (postfork))
1128 loop_fork (EV_A);
1129
969 /* update fd-related kernel structures */ 1130 /* update fd-related kernel structures */
970 fd_reify (EV_A); 1131 fd_reify (EV_A);
971 1132
972 /* calculate blocking time */ 1133 /* calculate blocking time */
973 1134
974 /* we only need this for !monotonic clockor timers, but as we basically 1135 /* we only need this for !monotonic clock or timers, but as we basically
975 always have timers, we just calculate it always */ 1136 always have timers, we just calculate it always */
976#if EV_USE_MONOTONIC 1137#if EV_USE_MONOTONIC
977 if (expect_true (have_monotonic)) 1138 if (expect_true (have_monotonic))
978 time_update_monotonic (EV_A); 1139 time_update_monotonic (EV_A);
979 else 1140 else
… …
1012 /* queue pending timers and reschedule them */ 1173 /* queue pending timers and reschedule them */
1013 timers_reify (EV_A); /* relative timers called last */ 1174 timers_reify (EV_A); /* relative timers called last */
1014 periodics_reify (EV_A); /* absolute timers called first */ 1175 periodics_reify (EV_A); /* absolute timers called first */
1015 1176
1016 /* queue idle watchers unless io or timers are pending */ 1177 /* queue idle watchers unless io or timers are pending */
1017 if (!pendingcnt) 1178 if (idlecnt && !any_pending (EV_A))
1018 queue_events (EV_A_ (W *)idles, idlecnt, EV_IDLE); 1179 queue_events (EV_A_ (W *)idles, idlecnt, EV_IDLE);
1019 1180
1020 /* queue check watchers, to be executed first */ 1181 /* queue check watchers, to be executed first */
1021 if (checkcnt) 1182 if (checkcnt)
1022 queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK); 1183 queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK);
… …
1097 return; 1258 return;
1098 1259
1099 assert (("ev_io_start called with negative fd", fd >= 0)); 1260 assert (("ev_io_start called with negative fd", fd >= 0));
1100 1261
1101 ev_start (EV_A_ (W)w, 1); 1262 ev_start (EV_A_ (W)w, 1);
1102 array_needsize (anfds, anfdmax, fd + 1, anfds_init); 1263 array_needsize (ANFD, anfds, anfdmax, fd + 1, anfds_init);
1103 wlist_add ((WL *)&anfds[fd].head, (WL)w); 1264 wlist_add ((WL *)&anfds[fd].head, (WL)w);
1104 1265
1105 fd_change (EV_A_ fd); 1266 fd_change (EV_A_ fd);
1106} 1267}
1107 1268
… …
1127 ((WT)w)->at += mn_now; 1288 ((WT)w)->at += mn_now;
1128 1289
1129 assert (("ev_timer_start called with negative timer repeat value", w->repeat >= 0.)); 1290 assert (("ev_timer_start called with negative timer repeat value", w->repeat >= 0.));
1130 1291
1131 ev_start (EV_A_ (W)w, ++timercnt); 1292 ev_start (EV_A_ (W)w, ++timercnt);
1132 array_needsize (timers, timermax, timercnt, ); 1293 array_needsize (struct ev_timer *, timers, timermax, timercnt, (void));
1133 timers [timercnt - 1] = w; 1294 timers [timercnt - 1] = w;
1134 upheap ((WT *)timers, timercnt - 1); 1295 upheap ((WT *)timers, timercnt - 1);
1135 1296
1136 assert (("internal timer heap corruption", timers [((W)w)->active - 1] == w)); 1297 assert (("internal timer heap corruption", timers [((W)w)->active - 1] == w));
1137} 1298}
… …
1177ev_periodic_start (EV_P_ struct ev_periodic *w) 1338ev_periodic_start (EV_P_ struct ev_periodic *w)
1178{ 1339{
1179 if (ev_is_active (w)) 1340 if (ev_is_active (w))
1180 return; 1341 return;
1181 1342
1343 if (w->reschedule_cb)
1344 ((WT)w)->at = w->reschedule_cb (w, rt_now);
1345 else if (w->interval)
1346 {
1182 assert (("ev_periodic_start called with negative interval value", w->interval >= 0.)); 1347 assert (("ev_periodic_start called with negative interval value", w->interval >= 0.));
1183
1184 /* this formula differs from the one in periodic_reify because we do not always round up */ 1348 /* this formula differs from the one in periodic_reify because we do not always round up */
1185 if (w->interval)
1186 ((WT)w)->at += ceil ((rt_now - ((WT)w)->at) / w->interval) * w->interval; 1349 ((WT)w)->at += ceil ((rt_now - ((WT)w)->at) / w->interval) * w->interval;
1350 }
1187 1351
1188 ev_start (EV_A_ (W)w, ++periodiccnt); 1352 ev_start (EV_A_ (W)w, ++periodiccnt);
1189 array_needsize (periodics, periodicmax, periodiccnt, ); 1353 array_needsize (struct ev_periodic *, periodics, periodicmax, periodiccnt, (void));
1190 periodics [periodiccnt - 1] = w; 1354 periodics [periodiccnt - 1] = w;
1191 upheap ((WT *)periodics, periodiccnt - 1); 1355 upheap ((WT *)periodics, periodiccnt - 1);
1192 1356
1193 assert (("internal periodic heap corruption", periodics [((W)w)->active - 1] == w)); 1357 assert (("internal periodic heap corruption", periodics [((W)w)->active - 1] == w));
1194} 1358}
… …
1210 1374
1211 ev_stop (EV_A_ (W)w); 1375 ev_stop (EV_A_ (W)w);
1212} 1376}
1213 1377
1214void 1378void
1379ev_periodic_again (EV_P_ struct ev_periodic *w)
1380{
1381 ev_periodic_stop (EV_A_ w);
1382 ev_periodic_start (EV_A_ w);
1383}
1384
1385void
1215ev_idle_start (EV_P_ struct ev_idle *w) 1386ev_idle_start (EV_P_ struct ev_idle *w)
1216{ 1387{
1217 if (ev_is_active (w)) 1388 if (ev_is_active (w))
1218 return; 1389 return;
1219 1390
1220 ev_start (EV_A_ (W)w, ++idlecnt); 1391 ev_start (EV_A_ (W)w, ++idlecnt);
1221 array_needsize (idles, idlemax, idlecnt, ); 1392 array_needsize (struct ev_idle *, idles, idlemax, idlecnt, (void));
1222 idles [idlecnt - 1] = w; 1393 idles [idlecnt - 1] = w;
1223} 1394}
1224 1395
1225void 1396void
1226ev_idle_stop (EV_P_ struct ev_idle *w) 1397ev_idle_stop (EV_P_ struct ev_idle *w)
… …
1238{ 1409{
1239 if (ev_is_active (w)) 1410 if (ev_is_active (w))
1240 return; 1411 return;
1241 1412
1242 ev_start (EV_A_ (W)w, ++preparecnt); 1413 ev_start (EV_A_ (W)w, ++preparecnt);
1243 array_needsize (prepares, preparemax, preparecnt, ); 1414 array_needsize (struct ev_prepare *, prepares, preparemax, preparecnt, (void));
1244 prepares [preparecnt - 1] = w; 1415 prepares [preparecnt - 1] = w;
1245} 1416}
1246 1417
1247void 1418void
1248ev_prepare_stop (EV_P_ struct ev_prepare *w) 1419ev_prepare_stop (EV_P_ struct ev_prepare *w)
… …
1260{ 1431{
1261 if (ev_is_active (w)) 1432 if (ev_is_active (w))
1262 return; 1433 return;
1263 1434
1264 ev_start (EV_A_ (W)w, ++checkcnt); 1435 ev_start (EV_A_ (W)w, ++checkcnt);
1265 array_needsize (checks, checkmax, checkcnt, ); 1436 array_needsize (struct ev_check *, checks, checkmax, checkcnt, (void));
1266 checks [checkcnt - 1] = w; 1437 checks [checkcnt - 1] = w;
1267} 1438}
1268 1439
1269void 1440void
1270ev_check_stop (EV_P_ struct ev_check *w) 1441ev_check_stop (EV_P_ struct ev_check *w)
… …
1291 return; 1462 return;
1292 1463
1293 assert (("ev_signal_start called with illegal signal number", w->signum > 0)); 1464 assert (("ev_signal_start called with illegal signal number", w->signum > 0));
1294 1465
1295 ev_start (EV_A_ (W)w, 1); 1466 ev_start (EV_A_ (W)w, 1);
1296 array_needsize (signals, signalmax, w->signum, signals_init); 1467 array_needsize (ANSIG, signals, signalmax, w->signum, signals_init);
1297 wlist_add ((WL *)&signals [w->signum - 1].head, (WL)w); 1468 wlist_add ((WL *)&signals [w->signum - 1].head, (WL)w);
1298 1469
1299 if (!((WL)w)->next) 1470 if (!((WL)w)->next)
1300 { 1471 {
1472#if WIN32
1473 signal (w->signum, sighandler);
1474#else
1301 struct sigaction sa; 1475 struct sigaction sa;
1302 sa.sa_handler = sighandler; 1476 sa.sa_handler = sighandler;
1303 sigfillset (&sa.sa_mask); 1477 sigfillset (&sa.sa_mask);
1304 sa.sa_flags = SA_RESTART; /* if restarting works we save one iteration */ 1478 sa.sa_flags = SA_RESTART; /* if restarting works we save one iteration */
1305 sigaction (w->signum, &sa, 0); 1479 sigaction (w->signum, &sa, 0);
1480#endif
1306 } 1481 }
1307} 1482}
1308 1483
1309void 1484void
1310ev_signal_stop (EV_P_ struct ev_signal *w) 1485ev_signal_stop (EV_P_ struct ev_signal *w)
… …
1360 void (*cb)(int revents, void *arg) = once->cb; 1535 void (*cb)(int revents, void *arg) = once->cb;
1361 void *arg = once->arg; 1536 void *arg = once->arg;
1362 1537
1363 ev_io_stop (EV_A_ &once->io); 1538 ev_io_stop (EV_A_ &once->io);
1364 ev_timer_stop (EV_A_ &once->to); 1539 ev_timer_stop (EV_A_ &once->to);
1365 free (once); 1540 ev_free (once);
1366 1541
1367 cb (revents, arg); 1542 cb (revents, arg);
1368} 1543}
1369 1544
1370static void 1545static void
… …
1380} 1555}
1381 1556
1382void 1557void
1383ev_once (EV_P_ int fd, int events, ev_tstamp timeout, void (*cb)(int revents, void *arg), void *arg) 1558ev_once (EV_P_ int fd, int events, ev_tstamp timeout, void (*cb)(int revents, void *arg), void *arg)
1384{ 1559{
1385 struct ev_once *once = malloc (sizeof (struct ev_once)); 1560 struct ev_once *once = (struct ev_once *)ev_malloc (sizeof (struct ev_once));
1386 1561
1387 if (!once) 1562 if (!once)
1388 cb (EV_ERROR | EV_READ | EV_WRITE | EV_TIMEOUT, arg); 1563 cb (EV_ERROR | EV_READ | EV_WRITE | EV_TIMEOUT, arg);
1389 else 1564 else
1390 { 1565 {

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