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Comparing libev/ev.c (file contents):
Revision 1.55 by root, Sun Nov 4 00:39:24 2007 UTC vs.
Revision 1.71 by root, Tue Nov 6 13:17:55 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>
38#include <fcntl.h> 59#include <fcntl.h>
39#include <signal.h>
40#include <stddef.h> 60#include <stddef.h>
41 61
42#include <stdio.h> 62#include <stdio.h>
43 63
44#include <assert.h> 64#include <assert.h>
45#include <errno.h> 65#include <errno.h>
46#include <sys/types.h> 66#include <sys/types.h>
67#include <time.h>
68
69#ifndef PERL
70# include <signal.h>
71#endif
72
47#ifndef WIN32 73#ifndef WIN32
74# include <unistd.h>
75# include <sys/time.h>
48# include <sys/wait.h> 76# include <sys/wait.h>
49#endif 77#endif
50#include <sys/time.h>
51#include <time.h>
52
53/**/ 78/**/
54 79
55#ifndef EV_USE_MONOTONIC 80#ifndef EV_USE_MONOTONIC
56# define EV_USE_MONOTONIC 1 81# define EV_USE_MONOTONIC 1
57#endif 82#endif
58 83
59#ifndef EV_USE_SELECT 84#ifndef EV_USE_SELECT
60# define EV_USE_SELECT 1 85# define EV_USE_SELECT 1
61#endif 86#endif
62 87
63#ifndef EV_USEV_POLL 88#ifndef EV_USE_POLL
64# define EV_USEV_POLL 0 /* poll is usually slower than select, and not as well tested */ 89# define EV_USE_POLL 0 /* poll is usually slower than select, and not as well tested */
65#endif 90#endif
66 91
67#ifndef EV_USE_EPOLL 92#ifndef EV_USE_EPOLL
68# define EV_USE_EPOLL 0 93# define EV_USE_EPOLL 0
69#endif 94#endif
70 95
71#ifndef EV_USE_KQUEUE 96#ifndef EV_USE_KQUEUE
72# define EV_USE_KQUEUE 0 97# define EV_USE_KQUEUE 0
98#endif
99
100#ifndef EV_USE_WIN32
101# ifdef WIN32
102# define EV_USE_WIN32 0 /* it does not exist, use select */
103# undef EV_USE_SELECT
104# define EV_USE_SELECT 1
105# else
106# define EV_USE_WIN32 0
107# endif
73#endif 108#endif
74 109
75#ifndef EV_USE_REALTIME 110#ifndef EV_USE_REALTIME
76# define EV_USE_REALTIME 1 111# define EV_USE_REALTIME 1
77#endif 112#endif
115typedef struct ev_watcher_list *WL; 150typedef struct ev_watcher_list *WL;
116typedef struct ev_watcher_time *WT; 151typedef struct ev_watcher_time *WT;
117 152
118static int have_monotonic; /* did clock_gettime (CLOCK_MONOTONIC) work? */ 153static int have_monotonic; /* did clock_gettime (CLOCK_MONOTONIC) work? */
119 154
155#if WIN32
156/* note: the comment below could not be substantiated, but what would I care */
157/* MSDN says this is required to handle SIGFPE */
158volatile double SIGFPE_REQ = 0.0f;
159#endif
160
120/*****************************************************************************/ 161/*****************************************************************************/
121 162
163static void (*syserr_cb)(const char *msg);
164
165void ev_set_syserr_cb (void (*cb)(const char *msg))
166{
167 syserr_cb = cb;
168}
169
170static void
171syserr (const char *msg)
172{
173 if (!msg)
174 msg = "(libev) system error";
175
176 if (syserr_cb)
177 syserr_cb (msg);
178 else
179 {
180 perror (msg);
181 abort ();
182 }
183}
184
185static void *(*alloc)(void *ptr, long size);
186
187void ev_set_allocator (void *(*cb)(void *ptr, long size))
188{
189 alloc = cb;
190}
191
192static void *
193ev_realloc (void *ptr, long size)
194{
195 ptr = alloc ? alloc (ptr, size) : realloc (ptr, size);
196
197 if (!ptr && size)
198 {
199 fprintf (stderr, "libev: cannot allocate %ld bytes, aborting.", size);
200 abort ();
201 }
202
203 return ptr;
204}
205
206#define ev_malloc(size) ev_realloc (0, (size))
207#define ev_free(ptr) ev_realloc ((ptr), 0)
208
209/*****************************************************************************/
210
122typedef struct 211typedef struct
123{ 212{
124 struct ev_watcher_list *head; 213 WL head;
125 unsigned char events; 214 unsigned char events;
126 unsigned char reify; 215 unsigned char reify;
127} ANFD; 216} ANFD;
128 217
129typedef struct 218typedef struct
187 return rt_now; 276 return rt_now;
188} 277}
189 278
190#define array_roundsize(base,n) ((n) | 4 & ~3) 279#define array_roundsize(base,n) ((n) | 4 & ~3)
191 280
192#define array_needsize(base,cur,cnt,init) \ 281#define array_needsize(base,cur,cnt,init) \
193 if (expect_false ((cnt) > cur)) \ 282 if (expect_false ((cnt) > cur)) \
194 { \ 283 { \
195 int newcnt = cur; \ 284 int newcnt = cur; \
196 do \ 285 do \
197 { \ 286 { \
198 newcnt = array_roundsize (base, newcnt << 1); \ 287 newcnt = array_roundsize (base, newcnt << 1); \
199 } \ 288 } \
200 while ((cnt) > newcnt); \ 289 while ((cnt) > newcnt); \
201 \ 290 \
202 base = realloc (base, sizeof (*base) * (newcnt)); \ 291 base = ev_realloc (base, sizeof (*base) * (newcnt)); \
203 init (base + cur, newcnt - cur); \ 292 init (base + cur, newcnt - cur); \
204 cur = newcnt; \ 293 cur = newcnt; \
205 } 294 }
295
296#define array_slim(stem) \
297 if (stem ## max < array_roundsize (stem ## cnt >> 2)) \
298 { \
299 stem ## max = array_roundsize (stem ## cnt >> 1); \
300 base = ev_realloc (base, sizeof (*base) * (stem ## max)); \
301 fprintf (stderr, "slimmed down " # stem " to %d\n", stem ## max);/*D*/\
302 }
303
304/* microsoft's pseudo-c is quite far from C as the rest of the world and the standard knows it */
305/* bringing us everlasting joy in form of stupid extra macros that are not required in C */
306#define array_free_microshit(stem) \
307 ev_free (stem ## s); stem ## cnt = stem ## max = 0;
308
309#define array_free(stem, idx) \
310 ev_free (stem ## s idx); stem ## cnt idx = stem ## max idx = 0;
206 311
207/*****************************************************************************/ 312/*****************************************************************************/
208 313
209static void 314static void
210anfds_init (ANFD *base, int count) 315anfds_init (ANFD *base, int count)
227 pendings [ABSPRI (w)][w->pending - 1].events |= events; 332 pendings [ABSPRI (w)][w->pending - 1].events |= events;
228 return; 333 return;
229 } 334 }
230 335
231 w->pending = ++pendingcnt [ABSPRI (w)]; 336 w->pending = ++pendingcnt [ABSPRI (w)];
232 array_needsize (pendings [ABSPRI (w)], pendingmax [ABSPRI (w)], pendingcnt [ABSPRI (w)], ); 337 array_needsize (pendings [ABSPRI (w)], pendingmax [ABSPRI (w)], pendingcnt [ABSPRI (w)], (void));
233 pendings [ABSPRI (w)][w->pending - 1].w = w; 338 pendings [ABSPRI (w)][w->pending - 1].w = w;
234 pendings [ABSPRI (w)][w->pending - 1].events = events; 339 pendings [ABSPRI (w)][w->pending - 1].events = events;
235} 340}
236 341
237static void 342static void
276 for (w = (struct ev_io *)anfd->head; w; w = (struct ev_io *)((WL)w)->next) 381 for (w = (struct ev_io *)anfd->head; w; w = (struct ev_io *)((WL)w)->next)
277 events |= w->events; 382 events |= w->events;
278 383
279 anfd->reify = 0; 384 anfd->reify = 0;
280 385
281 if (anfd->events != events)
282 {
283 method_modify (EV_A_ fd, anfd->events, events); 386 method_modify (EV_A_ fd, anfd->events, events);
284 anfd->events = events; 387 anfd->events = events;
285 }
286 } 388 }
287 389
288 fdchangecnt = 0; 390 fdchangecnt = 0;
289} 391}
290 392
291static void 393static void
292fd_change (EV_P_ int fd) 394fd_change (EV_P_ int fd)
293{ 395{
294 if (anfds [fd].reify || fdchangecnt < 0) 396 if (anfds [fd].reify)
295 return; 397 return;
296 398
297 anfds [fd].reify = 1; 399 anfds [fd].reify = 1;
298 400
299 ++fdchangecnt; 401 ++fdchangecnt;
300 array_needsize (fdchanges, fdchangemax, fdchangecnt, ); 402 array_needsize (fdchanges, fdchangemax, fdchangecnt, (void));
301 fdchanges [fdchangecnt - 1] = fd; 403 fdchanges [fdchangecnt - 1] = fd;
302} 404}
303 405
304static void 406static void
305fd_kill (EV_P_ int fd) 407fd_kill (EV_P_ int fd)
311 ev_io_stop (EV_A_ w); 413 ev_io_stop (EV_A_ w);
312 event (EV_A_ (W)w, EV_ERROR | EV_READ | EV_WRITE); 414 event (EV_A_ (W)w, EV_ERROR | EV_READ | EV_WRITE);
313 } 415 }
314} 416}
315 417
418static int
419fd_valid (int fd)
420{
421#ifdef WIN32
422 return !!win32_get_osfhandle (fd);
423#else
424 return fcntl (fd, F_GETFD) != -1;
425#endif
426}
427
316/* called on EBADF to verify fds */ 428/* called on EBADF to verify fds */
317static void 429static void
318fd_ebadf (EV_P) 430fd_ebadf (EV_P)
319{ 431{
320 int fd; 432 int fd;
321 433
322 for (fd = 0; fd < anfdmax; ++fd) 434 for (fd = 0; fd < anfdmax; ++fd)
323 if (anfds [fd].events) 435 if (anfds [fd].events)
324 if (fcntl (fd, F_GETFD) == -1 && errno == EBADF) 436 if (!fd_valid (fd) == -1 && errno == EBADF)
325 fd_kill (EV_A_ fd); 437 fd_kill (EV_A_ fd);
326} 438}
327 439
328/* called on ENOMEM in select/poll to kill some fds and retry */ 440/* called on ENOMEM in select/poll to kill some fds and retry */
329static void 441static void
330fd_enomem (EV_P) 442fd_enomem (EV_P)
331{ 443{
332 int fd = anfdmax; 444 int fd;
333 445
334 while (fd--) 446 for (fd = anfdmax; fd--; )
335 if (anfds [fd].events) 447 if (anfds [fd].events)
336 { 448 {
337 close (fd);
338 fd_kill (EV_A_ fd); 449 fd_kill (EV_A_ fd);
339 return; 450 return;
340 } 451 }
341} 452}
342 453
454/* usually called after fork if method needs to re-arm all fds from scratch */
455static void
456fd_rearm_all (EV_P)
457{
458 int fd;
459
460 /* this should be highly optimised to not do anything but set a flag */
461 for (fd = 0; fd < anfdmax; ++fd)
462 if (anfds [fd].events)
463 {
464 anfds [fd].events = 0;
465 fd_change (EV_A_ fd);
466 }
467}
468
343/*****************************************************************************/ 469/*****************************************************************************/
344 470
345static void 471static void
346upheap (WT *heap, int k) 472upheap (WT *heap, int k)
347{ 473{
348 WT w = heap [k]; 474 WT w = heap [k];
349 475
350 while (k && heap [k >> 1]->at > w->at) 476 while (k && heap [k >> 1]->at > w->at)
351 { 477 {
352 heap [k] = heap [k >> 1]; 478 heap [k] = heap [k >> 1];
353 heap [k]->active = k + 1; 479 ((W)heap [k])->active = k + 1;
354 k >>= 1; 480 k >>= 1;
355 } 481 }
356 482
357 heap [k] = w; 483 heap [k] = w;
358 heap [k]->active = k + 1; 484 ((W)heap [k])->active = k + 1;
359 485
360} 486}
361 487
362static void 488static void
363downheap (WT *heap, int N, int k) 489downheap (WT *heap, int N, int k)
373 499
374 if (w->at <= heap [j]->at) 500 if (w->at <= heap [j]->at)
375 break; 501 break;
376 502
377 heap [k] = heap [j]; 503 heap [k] = heap [j];
378 heap [k]->active = k + 1; 504 ((W)heap [k])->active = k + 1;
379 k = j; 505 k = j;
380 } 506 }
381 507
382 heap [k] = w; 508 heap [k] = w;
383 heap [k]->active = k + 1; 509 ((W)heap [k])->active = k + 1;
384} 510}
385 511
386/*****************************************************************************/ 512/*****************************************************************************/
387 513
388typedef struct 514typedef struct
389{ 515{
390 struct ev_watcher_list *head; 516 WL head;
391 sig_atomic_t volatile gotsig; 517 sig_atomic_t volatile gotsig;
392} ANSIG; 518} ANSIG;
393 519
394static ANSIG *signals; 520static ANSIG *signals;
395static int signalmax; 521static int signalmax;
396 522
397static int sigpipe [2]; 523static int sigpipe [2];
398static sig_atomic_t volatile gotsig; 524static sig_atomic_t volatile gotsig;
525static struct ev_io sigev;
399 526
400static void 527static void
401signals_init (ANSIG *base, int count) 528signals_init (ANSIG *base, int count)
402{ 529{
403 while (count--) 530 while (count--)
410} 537}
411 538
412static void 539static void
413sighandler (int signum) 540sighandler (int signum)
414{ 541{
542#if WIN32
543 signal (signum, sighandler);
544#endif
545
415 signals [signum - 1].gotsig = 1; 546 signals [signum - 1].gotsig = 1;
416 547
417 if (!gotsig) 548 if (!gotsig)
418 { 549 {
419 int old_errno = errno; 550 int old_errno = errno;
424} 555}
425 556
426static void 557static void
427sigcb (EV_P_ struct ev_io *iow, int revents) 558sigcb (EV_P_ struct ev_io *iow, int revents)
428{ 559{
429 struct ev_watcher_list *w; 560 WL w;
430 int signum; 561 int signum;
431 562
432 read (sigpipe [0], &revents, 1); 563 read (sigpipe [0], &revents, 1);
433 gotsig = 0; 564 gotsig = 0;
434 565
459 ev_unref (EV_A); /* child watcher should not keep loop alive */ 590 ev_unref (EV_A); /* child watcher should not keep loop alive */
460} 591}
461 592
462/*****************************************************************************/ 593/*****************************************************************************/
463 594
595static struct ev_child *childs [PID_HASHSIZE];
596
464#ifndef WIN32 597#ifndef WIN32
598
599static struct ev_signal childev;
465 600
466#ifndef WCONTINUED 601#ifndef WCONTINUED
467# define WCONTINUED 0 602# define WCONTINUED 0
468#endif 603#endif
469 604
473 struct ev_child *w; 608 struct ev_child *w;
474 609
475 for (w = (struct ev_child *)childs [chain & (PID_HASHSIZE - 1)]; w; w = (struct ev_child *)((WL)w)->next) 610 for (w = (struct ev_child *)childs [chain & (PID_HASHSIZE - 1)]; w; w = (struct ev_child *)((WL)w)->next)
476 if (w->pid == pid || !w->pid) 611 if (w->pid == pid || !w->pid)
477 { 612 {
478 w->priority = sw->priority; /* need to do it *now* */ 613 ev_priority (w) = ev_priority (sw); /* need to do it *now* */
479 w->rpid = pid; 614 w->rpid = pid;
480 w->rstatus = status; 615 w->rstatus = status;
481 event (EV_A_ (W)w, EV_CHILD); 616 event (EV_A_ (W)w, EV_CHILD);
482 } 617 }
483} 618}
484 619
485static void 620static void
505# include "ev_kqueue.c" 640# include "ev_kqueue.c"
506#endif 641#endif
507#if EV_USE_EPOLL 642#if EV_USE_EPOLL
508# include "ev_epoll.c" 643# include "ev_epoll.c"
509#endif 644#endif
510#if EV_USEV_POLL 645#if EV_USE_POLL
511# include "ev_poll.c" 646# include "ev_poll.c"
512#endif 647#endif
513#if EV_USE_SELECT 648#if EV_USE_SELECT
514# include "ev_select.c" 649# include "ev_select.c"
515#endif 650#endif
542ev_method (EV_P) 677ev_method (EV_P)
543{ 678{
544 return method; 679 return method;
545} 680}
546 681
547inline int 682static void
548loop_init (EV_P_ int methods) 683loop_init (EV_P_ int methods)
549{ 684{
550 if (!method) 685 if (!method)
551 { 686 {
552#if EV_USE_MONOTONIC 687#if EV_USE_MONOTONIC
560 rt_now = ev_time (); 695 rt_now = ev_time ();
561 mn_now = get_clock (); 696 mn_now = get_clock ();
562 now_floor = mn_now; 697 now_floor = mn_now;
563 rtmn_diff = rt_now - mn_now; 698 rtmn_diff = rt_now - mn_now;
564 699
565 if (pipe (sigpipe))
566 return 0;
567
568 if (methods == EVMETHOD_AUTO) 700 if (methods == EVMETHOD_AUTO)
569 if (!enable_secure () && getenv ("LIBmethodS")) 701 if (!enable_secure () && getenv ("LIBEV_METHODS"))
570 methods = atoi (getenv ("LIBmethodS")); 702 methods = atoi (getenv ("LIBEV_METHODS"));
571 else 703 else
572 methods = EVMETHOD_ANY; 704 methods = EVMETHOD_ANY;
573 705
574 method = 0; 706 method = 0;
707#if EV_USE_WIN32
708 if (!method && (methods & EVMETHOD_WIN32 )) method = win32_init (EV_A_ methods);
709#endif
575#if EV_USE_KQUEUE 710#if EV_USE_KQUEUE
576 if (!method && (methods & EVMETHOD_KQUEUE)) method = kqueue_init (EV_A_ methods); 711 if (!method && (methods & EVMETHOD_KQUEUE)) method = kqueue_init (EV_A_ methods);
577#endif 712#endif
578#if EV_USE_EPOLL 713#if EV_USE_EPOLL
579 if (!method && (methods & EVMETHOD_EPOLL )) method = epoll_init (EV_A_ methods); 714 if (!method && (methods & EVMETHOD_EPOLL )) method = epoll_init (EV_A_ methods);
580#endif 715#endif
581#if EV_USEV_POLL 716#if EV_USE_POLL
582 if (!method && (methods & EVMETHOD_POLL )) method = poll_init (EV_A_ methods); 717 if (!method && (methods & EVMETHOD_POLL )) method = poll_init (EV_A_ methods);
583#endif 718#endif
584#if EV_USE_SELECT 719#if EV_USE_SELECT
585 if (!method && (methods & EVMETHOD_SELECT)) method = select_init (EV_A_ methods); 720 if (!method && (methods & EVMETHOD_SELECT)) method = select_init (EV_A_ methods);
586#endif 721#endif
587 722
723 ev_watcher_init (&sigev, sigcb);
724 ev_set_priority (&sigev, EV_MAXPRI);
725 }
726}
727
728void
729loop_destroy (EV_P)
730{
731 int i;
732
733#if EV_USE_WIN32
734 if (method == EVMETHOD_WIN32 ) win32_destroy (EV_A);
735#endif
736#if EV_USE_KQUEUE
737 if (method == EVMETHOD_KQUEUE) kqueue_destroy (EV_A);
738#endif
739#if EV_USE_EPOLL
740 if (method == EVMETHOD_EPOLL ) epoll_destroy (EV_A);
741#endif
742#if EV_USE_POLL
743 if (method == EVMETHOD_POLL ) poll_destroy (EV_A);
744#endif
745#if EV_USE_SELECT
746 if (method == EVMETHOD_SELECT) select_destroy (EV_A);
747#endif
748
749 for (i = NUMPRI; i--; )
750 array_free (pending, [i]);
751
752 /* have to use the microsoft-never-gets-it-right macro */
753 array_free_microshit (fdchange);
754 array_free_microshit (timer);
755 array_free_microshit (periodic);
756 array_free_microshit (idle);
757 array_free_microshit (prepare);
758 array_free_microshit (check);
759
760 method = 0;
761}
762
763static void
764loop_fork (EV_P)
765{
766#if EV_USE_EPOLL
767 if (method == EVMETHOD_EPOLL ) epoll_fork (EV_A);
768#endif
769#if EV_USE_KQUEUE
770 if (method == EVMETHOD_KQUEUE) kqueue_fork (EV_A);
771#endif
772
773 if (ev_is_active (&sigev))
774 {
775 /* default loop */
776
777 ev_ref (EV_A);
778 ev_io_stop (EV_A_ &sigev);
779 close (sigpipe [0]);
780 close (sigpipe [1]);
781
782 while (pipe (sigpipe))
783 syserr ("(libev) error creating pipe");
784
785 siginit (EV_A);
786 }
787
788 postfork = 0;
789}
790
791#if EV_MULTIPLICITY
792struct ev_loop *
793ev_loop_new (int methods)
794{
795 struct ev_loop *loop = (struct ev_loop *)ev_malloc (sizeof (struct ev_loop));
796
797 memset (loop, 0, sizeof (struct ev_loop));
798
799 loop_init (EV_A_ methods);
800
801 if (ev_method (EV_A))
802 return loop;
803
804 return 0;
805}
806
807void
808ev_loop_destroy (EV_P)
809{
810 loop_destroy (EV_A);
811 ev_free (loop);
812}
813
814void
815ev_loop_fork (EV_P)
816{
817 postfork = 1;
818}
819
820#endif
821
822#if EV_MULTIPLICITY
823struct ev_loop default_loop_struct;
824static struct ev_loop *default_loop;
825
826struct ev_loop *
827#else
828static int default_loop;
829
830int
831#endif
832ev_default_loop (int methods)
833{
834 if (sigpipe [0] == sigpipe [1])
835 if (pipe (sigpipe))
836 return 0;
837
838 if (!default_loop)
839 {
840#if EV_MULTIPLICITY
841 struct ev_loop *loop = default_loop = &default_loop_struct;
842#else
843 default_loop = 1;
844#endif
845
846 loop_init (EV_A_ methods);
847
588 if (method) 848 if (ev_method (EV_A))
589 { 849 {
590 ev_watcher_init (&sigev, sigcb);
591 ev_set_priority (&sigev, EV_MAXPRI);
592 siginit (EV_A); 850 siginit (EV_A);
593 851
594#ifndef WIN32 852#ifndef WIN32
595 ev_signal_init (&childev, childcb, SIGCHLD); 853 ev_signal_init (&childev, childcb, SIGCHLD);
596 ev_set_priority (&childev, EV_MAXPRI); 854 ev_set_priority (&childev, EV_MAXPRI);
597 ev_signal_start (EV_A_ &childev); 855 ev_signal_start (EV_A_ &childev);
598 ev_unref (EV_A); /* child watcher should not keep loop alive */ 856 ev_unref (EV_A); /* child watcher should not keep loop alive */
599#endif 857#endif
600 } 858 }
859 else
860 default_loop = 0;
601 } 861 }
602 862
603 return method; 863 return default_loop;
604} 864}
605 865
866void
867ev_default_destroy (void)
868{
606#if EV_MULTIPLICITY 869#if EV_MULTIPLICITY
607 870 struct ev_loop *loop = default_loop;
608struct ev_loop *
609ev_loop_new (int methods)
610{
611 struct ev_loop *loop = (struct ev_loop *)calloc (1, sizeof (struct ev_loop));
612
613 if (loop_init (EV_A_ methods))
614 return loop;
615
616 ev_loop_delete (loop);
617
618 return 0;
619}
620
621void
622ev_loop_delete (EV_P)
623{
624 /*TODO*/
625 free (loop);
626}
627
628#else
629
630int
631ev_init (int methods)
632{
633 return loop_init (methods);
634}
635
636#endif 871#endif
637 872
638/*****************************************************************************/ 873#ifndef WIN32
639 874 ev_ref (EV_A); /* child watcher */
640void 875 ev_signal_stop (EV_A_ &childev);
641ev_fork_prepare (void)
642{
643 /* nop */
644}
645
646void
647ev_fork_parent (void)
648{
649 /* nop */
650}
651
652void
653ev_fork_child (void)
654{
655 /*TODO*/
656#if !EV_MULTIPLICITY
657#if EV_USE_EPOLL
658 if (method == EVMETHOD_EPOLL)
659 epoll_postfork_child (EV_A);
660#endif 876#endif
661 877
878 ev_ref (EV_A); /* signal watcher */
662 ev_io_stop (EV_A_ &sigev); 879 ev_io_stop (EV_A_ &sigev);
663 close (sigpipe [0]); 880
664 close (sigpipe [1]); 881 close (sigpipe [0]); sigpipe [0] = 0;
665 pipe (sigpipe); 882 close (sigpipe [1]); sigpipe [1] = 0;
666 siginit (EV_A); 883
884 loop_destroy (EV_A);
885}
886
887void
888ev_default_fork (void)
889{
890#if EV_MULTIPLICITY
891 struct ev_loop *loop = default_loop;
667#endif 892#endif
893
894 if (method)
895 postfork = 1;
668} 896}
669 897
670/*****************************************************************************/ 898/*****************************************************************************/
671 899
672static void 900static void
688} 916}
689 917
690static void 918static void
691timers_reify (EV_P) 919timers_reify (EV_P)
692{ 920{
693 while (timercnt && timers [0]->at <= mn_now) 921 while (timercnt && ((WT)timers [0])->at <= mn_now)
694 { 922 {
695 struct ev_timer *w = timers [0]; 923 struct ev_timer *w = timers [0];
924
925 assert (("inactive timer on timer heap detected", ev_is_active (w)));
696 926
697 /* first reschedule or stop timer */ 927 /* first reschedule or stop timer */
698 if (w->repeat) 928 if (w->repeat)
699 { 929 {
700 assert (("negative ev_timer repeat value found while processing timers", w->repeat > 0.)); 930 assert (("negative ev_timer repeat value found while processing timers", w->repeat > 0.));
701 w->at = mn_now + w->repeat; 931 ((WT)w)->at = mn_now + w->repeat;
702 downheap ((WT *)timers, timercnt, 0); 932 downheap ((WT *)timers, timercnt, 0);
703 } 933 }
704 else 934 else
705 ev_timer_stop (EV_A_ w); /* nonrepeating: stop timer */ 935 ev_timer_stop (EV_A_ w); /* nonrepeating: stop timer */
706 936
709} 939}
710 940
711static void 941static void
712periodics_reify (EV_P) 942periodics_reify (EV_P)
713{ 943{
714 while (periodiccnt && periodics [0]->at <= rt_now) 944 while (periodiccnt && ((WT)periodics [0])->at <= rt_now)
715 { 945 {
716 struct ev_periodic *w = periodics [0]; 946 struct ev_periodic *w = periodics [0];
947
948 assert (("inactive timer on periodic heap detected", ev_is_active (w)));
717 949
718 /* first reschedule or stop timer */ 950 /* first reschedule or stop timer */
719 if (w->interval) 951 if (w->interval)
720 { 952 {
721 w->at += floor ((rt_now - w->at) / w->interval + 1.) * w->interval; 953 ((WT)w)->at += floor ((rt_now - ((WT)w)->at) / w->interval + 1.) * w->interval;
722 assert (("ev_periodic timeout in the past detected while processing timers, negative interval?", w->at > rt_now)); 954 assert (("ev_periodic timeout in the past detected while processing timers, negative interval?", ((WT)w)->at > rt_now));
723 downheap ((WT *)periodics, periodiccnt, 0); 955 downheap ((WT *)periodics, periodiccnt, 0);
724 } 956 }
725 else 957 else
726 ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */ 958 ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */
727 959
739 { 971 {
740 struct ev_periodic *w = periodics [i]; 972 struct ev_periodic *w = periodics [i];
741 973
742 if (w->interval) 974 if (w->interval)
743 { 975 {
744 ev_tstamp diff = ceil ((rt_now - w->at) / w->interval) * w->interval; 976 ev_tstamp diff = ceil ((rt_now - ((WT)w)->at) / w->interval) * w->interval;
745 977
746 if (fabs (diff) >= 1e-4) 978 if (fabs (diff) >= 1e-4)
747 { 979 {
748 ev_periodic_stop (EV_A_ w); 980 ev_periodic_stop (EV_A_ w);
749 ev_periodic_start (EV_A_ w); 981 ev_periodic_start (EV_A_ w);
810 { 1042 {
811 periodics_reschedule (EV_A); 1043 periodics_reschedule (EV_A);
812 1044
813 /* adjust timers. this is easy, as the offset is the same for all */ 1045 /* adjust timers. this is easy, as the offset is the same for all */
814 for (i = 0; i < timercnt; ++i) 1046 for (i = 0; i < timercnt; ++i)
815 timers [i]->at += rt_now - mn_now; 1047 ((WT)timers [i])->at += rt_now - mn_now;
816 } 1048 }
817 1049
818 mn_now = rt_now; 1050 mn_now = rt_now;
819 } 1051 }
820} 1052}
846 { 1078 {
847 queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE); 1079 queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE);
848 call_pending (EV_A); 1080 call_pending (EV_A);
849 } 1081 }
850 1082
1083 /* we might have forked, so reify kernel state if necessary */
1084 if (expect_false (postfork))
1085 loop_fork (EV_A);
1086
851 /* update fd-related kernel structures */ 1087 /* update fd-related kernel structures */
852 fd_reify (EV_A); 1088 fd_reify (EV_A);
853 1089
854 /* calculate blocking time */ 1090 /* calculate blocking time */
855 1091
871 { 1107 {
872 block = MAX_BLOCKTIME; 1108 block = MAX_BLOCKTIME;
873 1109
874 if (timercnt) 1110 if (timercnt)
875 { 1111 {
876 ev_tstamp to = timers [0]->at - mn_now + method_fudge; 1112 ev_tstamp to = ((WT)timers [0])->at - mn_now + method_fudge;
877 if (block > to) block = to; 1113 if (block > to) block = to;
878 } 1114 }
879 1115
880 if (periodiccnt) 1116 if (periodiccnt)
881 { 1117 {
882 ev_tstamp to = periodics [0]->at - rt_now + method_fudge; 1118 ev_tstamp to = ((WT)periodics [0])->at - rt_now + method_fudge;
883 if (block > to) block = to; 1119 if (block > to) block = to;
884 } 1120 }
885 1121
886 if (block < 0.) block = 0.; 1122 if (block < 0.) block = 0.;
887 } 1123 }
1004ev_timer_start (EV_P_ struct ev_timer *w) 1240ev_timer_start (EV_P_ struct ev_timer *w)
1005{ 1241{
1006 if (ev_is_active (w)) 1242 if (ev_is_active (w))
1007 return; 1243 return;
1008 1244
1009 w->at += mn_now; 1245 ((WT)w)->at += mn_now;
1010 1246
1011 assert (("ev_timer_start called with negative timer repeat value", w->repeat >= 0.)); 1247 assert (("ev_timer_start called with negative timer repeat value", w->repeat >= 0.));
1012 1248
1013 ev_start (EV_A_ (W)w, ++timercnt); 1249 ev_start (EV_A_ (W)w, ++timercnt);
1014 array_needsize (timers, timermax, timercnt, ); 1250 array_needsize (timers, timermax, timercnt, (void));
1015 timers [timercnt - 1] = w; 1251 timers [timercnt - 1] = w;
1016 upheap ((WT *)timers, timercnt - 1); 1252 upheap ((WT *)timers, timercnt - 1);
1253
1254 assert (("internal timer heap corruption", timers [((W)w)->active - 1] == w));
1017} 1255}
1018 1256
1019void 1257void
1020ev_timer_stop (EV_P_ struct ev_timer *w) 1258ev_timer_stop (EV_P_ struct ev_timer *w)
1021{ 1259{
1022 ev_clear_pending (EV_A_ (W)w); 1260 ev_clear_pending (EV_A_ (W)w);
1023 if (!ev_is_active (w)) 1261 if (!ev_is_active (w))
1024 return; 1262 return;
1025 1263
1264 assert (("internal timer heap corruption", timers [((W)w)->active - 1] == w));
1265
1026 if (w->active < timercnt--) 1266 if (((W)w)->active < timercnt--)
1027 { 1267 {
1028 timers [w->active - 1] = timers [timercnt]; 1268 timers [((W)w)->active - 1] = timers [timercnt];
1029 downheap ((WT *)timers, timercnt, w->active - 1); 1269 downheap ((WT *)timers, timercnt, ((W)w)->active - 1);
1030 } 1270 }
1031 1271
1032 w->at = w->repeat; 1272 ((WT)w)->at = w->repeat;
1033 1273
1034 ev_stop (EV_A_ (W)w); 1274 ev_stop (EV_A_ (W)w);
1035} 1275}
1036 1276
1037void 1277void
1039{ 1279{
1040 if (ev_is_active (w)) 1280 if (ev_is_active (w))
1041 { 1281 {
1042 if (w->repeat) 1282 if (w->repeat)
1043 { 1283 {
1044 w->at = mn_now + w->repeat; 1284 ((WT)w)->at = mn_now + w->repeat;
1045 downheap ((WT *)timers, timercnt, w->active - 1); 1285 downheap ((WT *)timers, timercnt, ((W)w)->active - 1);
1046 } 1286 }
1047 else 1287 else
1048 ev_timer_stop (EV_A_ w); 1288 ev_timer_stop (EV_A_ w);
1049 } 1289 }
1050 else if (w->repeat) 1290 else if (w->repeat)
1059 1299
1060 assert (("ev_periodic_start called with negative interval value", w->interval >= 0.)); 1300 assert (("ev_periodic_start called with negative interval value", w->interval >= 0.));
1061 1301
1062 /* this formula differs from the one in periodic_reify because we do not always round up */ 1302 /* this formula differs from the one in periodic_reify because we do not always round up */
1063 if (w->interval) 1303 if (w->interval)
1064 w->at += ceil ((rt_now - w->at) / w->interval) * w->interval; 1304 ((WT)w)->at += ceil ((rt_now - ((WT)w)->at) / w->interval) * w->interval;
1065 1305
1066 ev_start (EV_A_ (W)w, ++periodiccnt); 1306 ev_start (EV_A_ (W)w, ++periodiccnt);
1067 array_needsize (periodics, periodicmax, periodiccnt, ); 1307 array_needsize (periodics, periodicmax, periodiccnt, (void));
1068 periodics [periodiccnt - 1] = w; 1308 periodics [periodiccnt - 1] = w;
1069 upheap ((WT *)periodics, periodiccnt - 1); 1309 upheap ((WT *)periodics, periodiccnt - 1);
1310
1311 assert (("internal periodic heap corruption", periodics [((W)w)->active - 1] == w));
1070} 1312}
1071 1313
1072void 1314void
1073ev_periodic_stop (EV_P_ struct ev_periodic *w) 1315ev_periodic_stop (EV_P_ struct ev_periodic *w)
1074{ 1316{
1075 ev_clear_pending (EV_A_ (W)w); 1317 ev_clear_pending (EV_A_ (W)w);
1076 if (!ev_is_active (w)) 1318 if (!ev_is_active (w))
1077 return; 1319 return;
1078 1320
1321 assert (("internal periodic heap corruption", periodics [((W)w)->active - 1] == w));
1322
1079 if (w->active < periodiccnt--) 1323 if (((W)w)->active < periodiccnt--)
1080 { 1324 {
1081 periodics [w->active - 1] = periodics [periodiccnt]; 1325 periodics [((W)w)->active - 1] = periodics [periodiccnt];
1082 downheap ((WT *)periodics, periodiccnt, w->active - 1); 1326 downheap ((WT *)periodics, periodiccnt, ((W)w)->active - 1);
1083 } 1327 }
1084 1328
1329 ev_stop (EV_A_ (W)w);
1330}
1331
1332void
1333ev_idle_start (EV_P_ struct ev_idle *w)
1334{
1335 if (ev_is_active (w))
1336 return;
1337
1338 ev_start (EV_A_ (W)w, ++idlecnt);
1339 array_needsize (idles, idlemax, idlecnt, (void));
1340 idles [idlecnt - 1] = w;
1341}
1342
1343void
1344ev_idle_stop (EV_P_ struct ev_idle *w)
1345{
1346 ev_clear_pending (EV_A_ (W)w);
1347 if (ev_is_active (w))
1348 return;
1349
1350 idles [((W)w)->active - 1] = idles [--idlecnt];
1351 ev_stop (EV_A_ (W)w);
1352}
1353
1354void
1355ev_prepare_start (EV_P_ struct ev_prepare *w)
1356{
1357 if (ev_is_active (w))
1358 return;
1359
1360 ev_start (EV_A_ (W)w, ++preparecnt);
1361 array_needsize (prepares, preparemax, preparecnt, (void));
1362 prepares [preparecnt - 1] = w;
1363}
1364
1365void
1366ev_prepare_stop (EV_P_ struct ev_prepare *w)
1367{
1368 ev_clear_pending (EV_A_ (W)w);
1369 if (ev_is_active (w))
1370 return;
1371
1372 prepares [((W)w)->active - 1] = prepares [--preparecnt];
1373 ev_stop (EV_A_ (W)w);
1374}
1375
1376void
1377ev_check_start (EV_P_ struct ev_check *w)
1378{
1379 if (ev_is_active (w))
1380 return;
1381
1382 ev_start (EV_A_ (W)w, ++checkcnt);
1383 array_needsize (checks, checkmax, checkcnt, (void));
1384 checks [checkcnt - 1] = w;
1385}
1386
1387void
1388ev_check_stop (EV_P_ struct ev_check *w)
1389{
1390 ev_clear_pending (EV_A_ (W)w);
1391 if (ev_is_active (w))
1392 return;
1393
1394 checks [((W)w)->active - 1] = checks [--checkcnt];
1085 ev_stop (EV_A_ (W)w); 1395 ev_stop (EV_A_ (W)w);
1086} 1396}
1087 1397
1088#ifndef SA_RESTART 1398#ifndef SA_RESTART
1089# define SA_RESTART 0 1399# define SA_RESTART 0
1090#endif 1400#endif
1091 1401
1092void 1402void
1093ev_signal_start (EV_P_ struct ev_signal *w) 1403ev_signal_start (EV_P_ struct ev_signal *w)
1094{ 1404{
1405#if EV_MULTIPLICITY
1406 assert (("signal watchers are only supported in the default loop", loop == default_loop));
1407#endif
1095 if (ev_is_active (w)) 1408 if (ev_is_active (w))
1096 return; 1409 return;
1097 1410
1098 assert (("ev_signal_start called with illegal signal number", w->signum > 0)); 1411 assert (("ev_signal_start called with illegal signal number", w->signum > 0));
1099 1412
1100 ev_start (EV_A_ (W)w, 1); 1413 ev_start (EV_A_ (W)w, 1);
1101 array_needsize (signals, signalmax, w->signum, signals_init); 1414 array_needsize (signals, signalmax, w->signum, signals_init);
1102 wlist_add ((WL *)&signals [w->signum - 1].head, (WL)w); 1415 wlist_add ((WL *)&signals [w->signum - 1].head, (WL)w);
1103 1416
1104 if (!w->next) 1417 if (!((WL)w)->next)
1105 { 1418 {
1419#if WIN32
1420 signal (w->signum, sighandler);
1421#else
1106 struct sigaction sa; 1422 struct sigaction sa;
1107 sa.sa_handler = sighandler; 1423 sa.sa_handler = sighandler;
1108 sigfillset (&sa.sa_mask); 1424 sigfillset (&sa.sa_mask);
1109 sa.sa_flags = SA_RESTART; /* if restarting works we save one iteration */ 1425 sa.sa_flags = SA_RESTART; /* if restarting works we save one iteration */
1110 sigaction (w->signum, &sa, 0); 1426 sigaction (w->signum, &sa, 0);
1427#endif
1111 } 1428 }
1112} 1429}
1113 1430
1114void 1431void
1115ev_signal_stop (EV_P_ struct ev_signal *w) 1432ev_signal_stop (EV_P_ struct ev_signal *w)
1124 if (!signals [w->signum - 1].head) 1441 if (!signals [w->signum - 1].head)
1125 signal (w->signum, SIG_DFL); 1442 signal (w->signum, SIG_DFL);
1126} 1443}
1127 1444
1128void 1445void
1129ev_idle_start (EV_P_ struct ev_idle *w)
1130{
1131 if (ev_is_active (w))
1132 return;
1133
1134 ev_start (EV_A_ (W)w, ++idlecnt);
1135 array_needsize (idles, idlemax, idlecnt, );
1136 idles [idlecnt - 1] = w;
1137}
1138
1139void
1140ev_idle_stop (EV_P_ struct ev_idle *w)
1141{
1142 ev_clear_pending (EV_A_ (W)w);
1143 if (ev_is_active (w))
1144 return;
1145
1146 idles [w->active - 1] = idles [--idlecnt];
1147 ev_stop (EV_A_ (W)w);
1148}
1149
1150void
1151ev_prepare_start (EV_P_ struct ev_prepare *w)
1152{
1153 if (ev_is_active (w))
1154 return;
1155
1156 ev_start (EV_A_ (W)w, ++preparecnt);
1157 array_needsize (prepares, preparemax, preparecnt, );
1158 prepares [preparecnt - 1] = w;
1159}
1160
1161void
1162ev_prepare_stop (EV_P_ struct ev_prepare *w)
1163{
1164 ev_clear_pending (EV_A_ (W)w);
1165 if (ev_is_active (w))
1166 return;
1167
1168 prepares [w->active - 1] = prepares [--preparecnt];
1169 ev_stop (EV_A_ (W)w);
1170}
1171
1172void
1173ev_check_start (EV_P_ struct ev_check *w)
1174{
1175 if (ev_is_active (w))
1176 return;
1177
1178 ev_start (EV_A_ (W)w, ++checkcnt);
1179 array_needsize (checks, checkmax, checkcnt, );
1180 checks [checkcnt - 1] = w;
1181}
1182
1183void
1184ev_check_stop (EV_P_ struct ev_check *w)
1185{
1186 ev_clear_pending (EV_A_ (W)w);
1187 if (ev_is_active (w))
1188 return;
1189
1190 checks [w->active - 1] = checks [--checkcnt];
1191 ev_stop (EV_A_ (W)w);
1192}
1193
1194void
1195ev_child_start (EV_P_ struct ev_child *w) 1446ev_child_start (EV_P_ struct ev_child *w)
1196{ 1447{
1448#if EV_MULTIPLICITY
1449 assert (("child watchers are only supported in the default loop", loop == default_loop));
1450#endif
1197 if (ev_is_active (w)) 1451 if (ev_is_active (w))
1198 return; 1452 return;
1199 1453
1200 ev_start (EV_A_ (W)w, 1); 1454 ev_start (EV_A_ (W)w, 1);
1201 wlist_add ((WL *)&childs [w->pid & (PID_HASHSIZE - 1)], (WL)w); 1455 wlist_add ((WL *)&childs [w->pid & (PID_HASHSIZE - 1)], (WL)w);
1228 void (*cb)(int revents, void *arg) = once->cb; 1482 void (*cb)(int revents, void *arg) = once->cb;
1229 void *arg = once->arg; 1483 void *arg = once->arg;
1230 1484
1231 ev_io_stop (EV_A_ &once->io); 1485 ev_io_stop (EV_A_ &once->io);
1232 ev_timer_stop (EV_A_ &once->to); 1486 ev_timer_stop (EV_A_ &once->to);
1233 free (once); 1487 ev_free (once);
1234 1488
1235 cb (revents, arg); 1489 cb (revents, arg);
1236} 1490}
1237 1491
1238static void 1492static void
1248} 1502}
1249 1503
1250void 1504void
1251ev_once (EV_P_ int fd, int events, ev_tstamp timeout, void (*cb)(int revents, void *arg), void *arg) 1505ev_once (EV_P_ int fd, int events, ev_tstamp timeout, void (*cb)(int revents, void *arg), void *arg)
1252{ 1506{
1253 struct ev_once *once = malloc (sizeof (struct ev_once)); 1507 struct ev_once *once = ev_malloc (sizeof (struct ev_once));
1254 1508
1255 if (!once) 1509 if (!once)
1256 cb (EV_ERROR | EV_READ | EV_WRITE | EV_TIMEOUT, arg); 1510 cb (EV_ERROR | EV_READ | EV_WRITE | EV_TIMEOUT, arg);
1257 else 1511 else
1258 { 1512 {
1273 ev_timer_start (EV_A_ &once->to); 1527 ev_timer_start (EV_A_ &once->to);
1274 } 1528 }
1275 } 1529 }
1276} 1530}
1277 1531
1278/*****************************************************************************/
1279
1280#if 0
1281
1282struct ev_io wio;
1283
1284static void
1285sin_cb (struct ev_io *w, int revents)
1286{
1287 fprintf (stderr, "sin %d, revents %d\n", w->fd, revents);
1288}
1289
1290static void
1291ocb (struct ev_timer *w, int revents)
1292{
1293 //fprintf (stderr, "timer %f,%f (%x) (%f) d%p\n", w->at, w->repeat, revents, w->at - ev_time (), w->data);
1294 ev_timer_stop (w);
1295 ev_timer_start (w);
1296}
1297
1298static void
1299scb (struct ev_signal *w, int revents)
1300{
1301 fprintf (stderr, "signal %x,%d\n", revents, w->signum);
1302 ev_io_stop (&wio);
1303 ev_io_start (&wio);
1304}
1305
1306static void
1307gcb (struct ev_signal *w, int revents)
1308{
1309 fprintf (stderr, "generic %x\n", revents);
1310
1311}
1312
1313int main (void)
1314{
1315 ev_init (0);
1316
1317 ev_io_init (&wio, sin_cb, 0, EV_READ);
1318 ev_io_start (&wio);
1319
1320 struct ev_timer t[10000];
1321
1322#if 0
1323 int i;
1324 for (i = 0; i < 10000; ++i)
1325 {
1326 struct ev_timer *w = t + i;
1327 ev_watcher_init (w, ocb, i);
1328 ev_timer_init_abs (w, ocb, drand48 (), 0.99775533);
1329 ev_timer_start (w);
1330 if (drand48 () < 0.5)
1331 ev_timer_stop (w);
1332 }
1333#endif
1334
1335 struct ev_timer t1;
1336 ev_timer_init (&t1, ocb, 5, 10);
1337 ev_timer_start (&t1);
1338
1339 struct ev_signal sig;
1340 ev_signal_init (&sig, scb, SIGQUIT);
1341 ev_signal_start (&sig);
1342
1343 struct ev_check cw;
1344 ev_check_init (&cw, gcb);
1345 ev_check_start (&cw);
1346
1347 struct ev_idle iw;
1348 ev_idle_init (&iw, gcb);
1349 ev_idle_start (&iw);
1350
1351 ev_loop (0);
1352
1353 return 0;
1354}
1355
1356#endif
1357
1358
1359
1360

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