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Comparing libev/ev.c (file contents):
Revision 1.54 by root, Sun Nov 4 00:24:16 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
130{ 219{
131 W w; 220 W w;
132 int events; 221 int events;
133} ANPENDING; 222} ANPENDING;
134 223
135#ifdef EV_MULTIPLICITY 224#if EV_MULTIPLICITY
136 225
137struct ev_loop 226struct ev_loop
138{ 227{
139# define VAR(name,decl) decl; 228# define VAR(name,decl) decl;
140# include "ev_vars.h" 229# include "ev_vars.h"
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
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;
604}
605
606#ifdef EV_MULTIPLICITY
607
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 loop_init (EV_A_ methods);
614
615 return loop; 863 return default_loop;
616} 864}
617 865
618void 866void
619ev_loop_delete (EV_P) 867ev_default_destroy (void)
620{ 868{
621 /*TODO*/
622 free (loop);
623}
624
625#else
626
627int
628ev_init (int methods)
629{
630 loop_init ();
631}
632
633#endif
634
635/*****************************************************************************/
636
637void
638ev_fork_prepare (void)
639{
640 /* nop */
641}
642
643void
644ev_fork_parent (void)
645{
646 /* nop */
647}
648
649void
650ev_fork_child (void)
651{
652 /*TODO*/
653#if !EV_MULTIPLICITY 869#if EV_MULTIPLICITY
654#if EV_USE_EPOLL 870 struct ev_loop *loop = default_loop;
655 if (method == EVMETHOD_EPOLL)
656 epoll_postfork_child (EV_A);
657#endif 871#endif
658 872
873#ifndef WIN32
874 ev_ref (EV_A); /* child watcher */
875 ev_signal_stop (EV_A_ &childev);
876#endif
877
878 ev_ref (EV_A); /* signal watcher */
659 ev_io_stop (EV_A_ &sigev); 879 ev_io_stop (EV_A_ &sigev);
660 close (sigpipe [0]); 880
661 close (sigpipe [1]); 881 close (sigpipe [0]); sigpipe [0] = 0;
662 pipe (sigpipe); 882 close (sigpipe [1]); sigpipe [1] = 0;
663 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;
664#endif 892#endif
893
894 if (method)
895 postfork = 1;
665} 896}
666 897
667/*****************************************************************************/ 898/*****************************************************************************/
668 899
669static void 900static void
685} 916}
686 917
687static void 918static void
688timers_reify (EV_P) 919timers_reify (EV_P)
689{ 920{
690 while (timercnt && timers [0]->at <= mn_now) 921 while (timercnt && ((WT)timers [0])->at <= mn_now)
691 { 922 {
692 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)));
693 926
694 /* first reschedule or stop timer */ 927 /* first reschedule or stop timer */
695 if (w->repeat) 928 if (w->repeat)
696 { 929 {
697 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.));
698 w->at = mn_now + w->repeat; 931 ((WT)w)->at = mn_now + w->repeat;
699 downheap ((WT *)timers, timercnt, 0); 932 downheap ((WT *)timers, timercnt, 0);
700 } 933 }
701 else 934 else
702 ev_timer_stop (EV_A_ w); /* nonrepeating: stop timer */ 935 ev_timer_stop (EV_A_ w); /* nonrepeating: stop timer */
703 936
706} 939}
707 940
708static void 941static void
709periodics_reify (EV_P) 942periodics_reify (EV_P)
710{ 943{
711 while (periodiccnt && periodics [0]->at <= rt_now) 944 while (periodiccnt && ((WT)periodics [0])->at <= rt_now)
712 { 945 {
713 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)));
714 949
715 /* first reschedule or stop timer */ 950 /* first reschedule or stop timer */
716 if (w->interval) 951 if (w->interval)
717 { 952 {
718 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;
719 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));
720 downheap ((WT *)periodics, periodiccnt, 0); 955 downheap ((WT *)periodics, periodiccnt, 0);
721 } 956 }
722 else 957 else
723 ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */ 958 ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */
724 959
736 { 971 {
737 struct ev_periodic *w = periodics [i]; 972 struct ev_periodic *w = periodics [i];
738 973
739 if (w->interval) 974 if (w->interval)
740 { 975 {
741 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;
742 977
743 if (fabs (diff) >= 1e-4) 978 if (fabs (diff) >= 1e-4)
744 { 979 {
745 ev_periodic_stop (EV_A_ w); 980 ev_periodic_stop (EV_A_ w);
746 ev_periodic_start (EV_A_ w); 981 ev_periodic_start (EV_A_ w);
807 { 1042 {
808 periodics_reschedule (EV_A); 1043 periodics_reschedule (EV_A);
809 1044
810 /* 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 */
811 for (i = 0; i < timercnt; ++i) 1046 for (i = 0; i < timercnt; ++i)
812 timers [i]->at += rt_now - mn_now; 1047 ((WT)timers [i])->at += rt_now - mn_now;
813 } 1048 }
814 1049
815 mn_now = rt_now; 1050 mn_now = rt_now;
816 } 1051 }
817} 1052}
843 { 1078 {
844 queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE); 1079 queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE);
845 call_pending (EV_A); 1080 call_pending (EV_A);
846 } 1081 }
847 1082
1083 /* we might have forked, so reify kernel state if necessary */
1084 if (expect_false (postfork))
1085 loop_fork (EV_A);
1086
848 /* update fd-related kernel structures */ 1087 /* update fd-related kernel structures */
849 fd_reify (EV_A); 1088 fd_reify (EV_A);
850 1089
851 /* calculate blocking time */ 1090 /* calculate blocking time */
852 1091
868 { 1107 {
869 block = MAX_BLOCKTIME; 1108 block = MAX_BLOCKTIME;
870 1109
871 if (timercnt) 1110 if (timercnt)
872 { 1111 {
873 ev_tstamp to = timers [0]->at - mn_now + method_fudge; 1112 ev_tstamp to = ((WT)timers [0])->at - mn_now + method_fudge;
874 if (block > to) block = to; 1113 if (block > to) block = to;
875 } 1114 }
876 1115
877 if (periodiccnt) 1116 if (periodiccnt)
878 { 1117 {
879 ev_tstamp to = periodics [0]->at - rt_now + method_fudge; 1118 ev_tstamp to = ((WT)periodics [0])->at - rt_now + method_fudge;
880 if (block > to) block = to; 1119 if (block > to) block = to;
881 } 1120 }
882 1121
883 if (block < 0.) block = 0.; 1122 if (block < 0.) block = 0.;
884 } 1123 }
1001ev_timer_start (EV_P_ struct ev_timer *w) 1240ev_timer_start (EV_P_ struct ev_timer *w)
1002{ 1241{
1003 if (ev_is_active (w)) 1242 if (ev_is_active (w))
1004 return; 1243 return;
1005 1244
1006 w->at += mn_now; 1245 ((WT)w)->at += mn_now;
1007 1246
1008 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.));
1009 1248
1010 ev_start (EV_A_ (W)w, ++timercnt); 1249 ev_start (EV_A_ (W)w, ++timercnt);
1011 array_needsize (timers, timermax, timercnt, ); 1250 array_needsize (timers, timermax, timercnt, (void));
1012 timers [timercnt - 1] = w; 1251 timers [timercnt - 1] = w;
1013 upheap ((WT *)timers, timercnt - 1); 1252 upheap ((WT *)timers, timercnt - 1);
1253
1254 assert (("internal timer heap corruption", timers [((W)w)->active - 1] == w));
1014} 1255}
1015 1256
1016void 1257void
1017ev_timer_stop (EV_P_ struct ev_timer *w) 1258ev_timer_stop (EV_P_ struct ev_timer *w)
1018{ 1259{
1019 ev_clear_pending (EV_A_ (W)w); 1260 ev_clear_pending (EV_A_ (W)w);
1020 if (!ev_is_active (w)) 1261 if (!ev_is_active (w))
1021 return; 1262 return;
1022 1263
1264 assert (("internal timer heap corruption", timers [((W)w)->active - 1] == w));
1265
1023 if (w->active < timercnt--) 1266 if (((W)w)->active < timercnt--)
1024 { 1267 {
1025 timers [w->active - 1] = timers [timercnt]; 1268 timers [((W)w)->active - 1] = timers [timercnt];
1026 downheap ((WT *)timers, timercnt, w->active - 1); 1269 downheap ((WT *)timers, timercnt, ((W)w)->active - 1);
1027 } 1270 }
1028 1271
1029 w->at = w->repeat; 1272 ((WT)w)->at = w->repeat;
1030 1273
1031 ev_stop (EV_A_ (W)w); 1274 ev_stop (EV_A_ (W)w);
1032} 1275}
1033 1276
1034void 1277void
1036{ 1279{
1037 if (ev_is_active (w)) 1280 if (ev_is_active (w))
1038 { 1281 {
1039 if (w->repeat) 1282 if (w->repeat)
1040 { 1283 {
1041 w->at = mn_now + w->repeat; 1284 ((WT)w)->at = mn_now + w->repeat;
1042 downheap ((WT *)timers, timercnt, w->active - 1); 1285 downheap ((WT *)timers, timercnt, ((W)w)->active - 1);
1043 } 1286 }
1044 else 1287 else
1045 ev_timer_stop (EV_A_ w); 1288 ev_timer_stop (EV_A_ w);
1046 } 1289 }
1047 else if (w->repeat) 1290 else if (w->repeat)
1056 1299
1057 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.));
1058 1301
1059 /* 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 */
1060 if (w->interval) 1303 if (w->interval)
1061 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;
1062 1305
1063 ev_start (EV_A_ (W)w, ++periodiccnt); 1306 ev_start (EV_A_ (W)w, ++periodiccnt);
1064 array_needsize (periodics, periodicmax, periodiccnt, ); 1307 array_needsize (periodics, periodicmax, periodiccnt, (void));
1065 periodics [periodiccnt - 1] = w; 1308 periodics [periodiccnt - 1] = w;
1066 upheap ((WT *)periodics, periodiccnt - 1); 1309 upheap ((WT *)periodics, periodiccnt - 1);
1310
1311 assert (("internal periodic heap corruption", periodics [((W)w)->active - 1] == w));
1067} 1312}
1068 1313
1069void 1314void
1070ev_periodic_stop (EV_P_ struct ev_periodic *w) 1315ev_periodic_stop (EV_P_ struct ev_periodic *w)
1071{ 1316{
1072 ev_clear_pending (EV_A_ (W)w); 1317 ev_clear_pending (EV_A_ (W)w);
1073 if (!ev_is_active (w)) 1318 if (!ev_is_active (w))
1074 return; 1319 return;
1075 1320
1321 assert (("internal periodic heap corruption", periodics [((W)w)->active - 1] == w));
1322
1076 if (w->active < periodiccnt--) 1323 if (((W)w)->active < periodiccnt--)
1077 { 1324 {
1078 periodics [w->active - 1] = periodics [periodiccnt]; 1325 periodics [((W)w)->active - 1] = periodics [periodiccnt];
1079 downheap ((WT *)periodics, periodiccnt, w->active - 1); 1326 downheap ((WT *)periodics, periodiccnt, ((W)w)->active - 1);
1080 } 1327 }
1081 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];
1082 ev_stop (EV_A_ (W)w); 1395 ev_stop (EV_A_ (W)w);
1083} 1396}
1084 1397
1085#ifndef SA_RESTART 1398#ifndef SA_RESTART
1086# define SA_RESTART 0 1399# define SA_RESTART 0
1087#endif 1400#endif
1088 1401
1089void 1402void
1090ev_signal_start (EV_P_ struct ev_signal *w) 1403ev_signal_start (EV_P_ struct ev_signal *w)
1091{ 1404{
1405#if EV_MULTIPLICITY
1406 assert (("signal watchers are only supported in the default loop", loop == default_loop));
1407#endif
1092 if (ev_is_active (w)) 1408 if (ev_is_active (w))
1093 return; 1409 return;
1094 1410
1095 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));
1096 1412
1097 ev_start (EV_A_ (W)w, 1); 1413 ev_start (EV_A_ (W)w, 1);
1098 array_needsize (signals, signalmax, w->signum, signals_init); 1414 array_needsize (signals, signalmax, w->signum, signals_init);
1099 wlist_add ((WL *)&signals [w->signum - 1].head, (WL)w); 1415 wlist_add ((WL *)&signals [w->signum - 1].head, (WL)w);
1100 1416
1101 if (!w->next) 1417 if (!((WL)w)->next)
1102 { 1418 {
1419#if WIN32
1420 signal (w->signum, sighandler);
1421#else
1103 struct sigaction sa; 1422 struct sigaction sa;
1104 sa.sa_handler = sighandler; 1423 sa.sa_handler = sighandler;
1105 sigfillset (&sa.sa_mask); 1424 sigfillset (&sa.sa_mask);
1106 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 */
1107 sigaction (w->signum, &sa, 0); 1426 sigaction (w->signum, &sa, 0);
1427#endif
1108 } 1428 }
1109} 1429}
1110 1430
1111void 1431void
1112ev_signal_stop (EV_P_ struct ev_signal *w) 1432ev_signal_stop (EV_P_ struct ev_signal *w)
1121 if (!signals [w->signum - 1].head) 1441 if (!signals [w->signum - 1].head)
1122 signal (w->signum, SIG_DFL); 1442 signal (w->signum, SIG_DFL);
1123} 1443}
1124 1444
1125void 1445void
1126ev_idle_start (EV_P_ struct ev_idle *w)
1127{
1128 if (ev_is_active (w))
1129 return;
1130
1131 ev_start (EV_A_ (W)w, ++idlecnt);
1132 array_needsize (idles, idlemax, idlecnt, );
1133 idles [idlecnt - 1] = w;
1134}
1135
1136void
1137ev_idle_stop (EV_P_ struct ev_idle *w)
1138{
1139 ev_clear_pending (EV_A_ (W)w);
1140 if (ev_is_active (w))
1141 return;
1142
1143 idles [w->active - 1] = idles [--idlecnt];
1144 ev_stop (EV_A_ (W)w);
1145}
1146
1147void
1148ev_prepare_start (EV_P_ struct ev_prepare *w)
1149{
1150 if (ev_is_active (w))
1151 return;
1152
1153 ev_start (EV_A_ (W)w, ++preparecnt);
1154 array_needsize (prepares, preparemax, preparecnt, );
1155 prepares [preparecnt - 1] = w;
1156}
1157
1158void
1159ev_prepare_stop (EV_P_ struct ev_prepare *w)
1160{
1161 ev_clear_pending (EV_A_ (W)w);
1162 if (ev_is_active (w))
1163 return;
1164
1165 prepares [w->active - 1] = prepares [--preparecnt];
1166 ev_stop (EV_A_ (W)w);
1167}
1168
1169void
1170ev_check_start (EV_P_ struct ev_check *w)
1171{
1172 if (ev_is_active (w))
1173 return;
1174
1175 ev_start (EV_A_ (W)w, ++checkcnt);
1176 array_needsize (checks, checkmax, checkcnt, );
1177 checks [checkcnt - 1] = w;
1178}
1179
1180void
1181ev_check_stop (EV_P_ struct ev_check *w)
1182{
1183 ev_clear_pending (EV_A_ (W)w);
1184 if (ev_is_active (w))
1185 return;
1186
1187 checks [w->active - 1] = checks [--checkcnt];
1188 ev_stop (EV_A_ (W)w);
1189}
1190
1191void
1192ev_child_start (EV_P_ struct ev_child *w) 1446ev_child_start (EV_P_ struct ev_child *w)
1193{ 1447{
1448#if EV_MULTIPLICITY
1449 assert (("child watchers are only supported in the default loop", loop == default_loop));
1450#endif
1194 if (ev_is_active (w)) 1451 if (ev_is_active (w))
1195 return; 1452 return;
1196 1453
1197 ev_start (EV_A_ (W)w, 1); 1454 ev_start (EV_A_ (W)w, 1);
1198 wlist_add ((WL *)&childs [w->pid & (PID_HASHSIZE - 1)], (WL)w); 1455 wlist_add ((WL *)&childs [w->pid & (PID_HASHSIZE - 1)], (WL)w);
1225 void (*cb)(int revents, void *arg) = once->cb; 1482 void (*cb)(int revents, void *arg) = once->cb;
1226 void *arg = once->arg; 1483 void *arg = once->arg;
1227 1484
1228 ev_io_stop (EV_A_ &once->io); 1485 ev_io_stop (EV_A_ &once->io);
1229 ev_timer_stop (EV_A_ &once->to); 1486 ev_timer_stop (EV_A_ &once->to);
1230 free (once); 1487 ev_free (once);
1231 1488
1232 cb (revents, arg); 1489 cb (revents, arg);
1233} 1490}
1234 1491
1235static void 1492static void
1245} 1502}
1246 1503
1247void 1504void
1248ev_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)
1249{ 1506{
1250 struct ev_once *once = malloc (sizeof (struct ev_once)); 1507 struct ev_once *once = ev_malloc (sizeof (struct ev_once));
1251 1508
1252 if (!once) 1509 if (!once)
1253 cb (EV_ERROR | EV_READ | EV_WRITE | EV_TIMEOUT, arg); 1510 cb (EV_ERROR | EV_READ | EV_WRITE | EV_TIMEOUT, arg);
1254 else 1511 else
1255 { 1512 {
1270 ev_timer_start (EV_A_ &once->to); 1527 ev_timer_start (EV_A_ &once->to);
1271 } 1528 }
1272 } 1529 }
1273} 1530}
1274 1531
1275/*****************************************************************************/
1276
1277#if 0
1278
1279struct ev_io wio;
1280
1281static void
1282sin_cb (struct ev_io *w, int revents)
1283{
1284 fprintf (stderr, "sin %d, revents %d\n", w->fd, revents);
1285}
1286
1287static void
1288ocb (struct ev_timer *w, int revents)
1289{
1290 //fprintf (stderr, "timer %f,%f (%x) (%f) d%p\n", w->at, w->repeat, revents, w->at - ev_time (), w->data);
1291 ev_timer_stop (w);
1292 ev_timer_start (w);
1293}
1294
1295static void
1296scb (struct ev_signal *w, int revents)
1297{
1298 fprintf (stderr, "signal %x,%d\n", revents, w->signum);
1299 ev_io_stop (&wio);
1300 ev_io_start (&wio);
1301}
1302
1303static void
1304gcb (struct ev_signal *w, int revents)
1305{
1306 fprintf (stderr, "generic %x\n", revents);
1307
1308}
1309
1310int main (void)
1311{
1312 ev_init (0);
1313
1314 ev_io_init (&wio, sin_cb, 0, EV_READ);
1315 ev_io_start (&wio);
1316
1317 struct ev_timer t[10000];
1318
1319#if 0
1320 int i;
1321 for (i = 0; i < 10000; ++i)
1322 {
1323 struct ev_timer *w = t + i;
1324 ev_watcher_init (w, ocb, i);
1325 ev_timer_init_abs (w, ocb, drand48 (), 0.99775533);
1326 ev_timer_start (w);
1327 if (drand48 () < 0.5)
1328 ev_timer_stop (w);
1329 }
1330#endif
1331
1332 struct ev_timer t1;
1333 ev_timer_init (&t1, ocb, 5, 10);
1334 ev_timer_start (&t1);
1335
1336 struct ev_signal sig;
1337 ev_signal_init (&sig, scb, SIGQUIT);
1338 ev_signal_start (&sig);
1339
1340 struct ev_check cw;
1341 ev_check_init (&cw, gcb);
1342 ev_check_start (&cw);
1343
1344 struct ev_idle iw;
1345 ev_idle_init (&iw, gcb);
1346 ev_idle_start (&iw);
1347
1348 ev_loop (0);
1349
1350 return 0;
1351}
1352
1353#endif
1354
1355
1356
1357

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