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Comparing libev/ev.c (file contents):
Revision 1.117 by ayin, Thu Nov 15 17:15:56 2007 UTC vs.
Revision 1.138 by root, Sat Nov 24 09:48:38 2007 UTC

… …
32#ifdef __cplusplus 32#ifdef __cplusplus
33extern "C" { 33extern "C" {
34#endif 34#endif
35 35
36#ifndef EV_STANDALONE 36#ifndef EV_STANDALONE
37# ifdef EV_CONFIG_H
38# include EV_CONFIG_H
39# else
37# include "config.h" 40# include "config.h"
41# endif
38 42
39# if HAVE_CLOCK_GETTIME 43# if HAVE_CLOCK_GETTIME
40# ifndef EV_USE_MONOTONIC 44# ifndef EV_USE_MONOTONIC
41# define EV_USE_MONOTONIC 1 45# define EV_USE_MONOTONIC 1
42# endif 46# endif
43# ifndef EV_USE_REALTIME 47# ifndef EV_USE_REALTIME
44# define EV_USE_REALTIME 1 48# define EV_USE_REALTIME 1
45# endif 49# endif
50# else
51# ifndef EV_USE_MONOTONIC
52# define EV_USE_MONOTONIC 0
53# endif
54# ifndef EV_USE_REALTIME
55# define EV_USE_REALTIME 0
56# endif
46# endif 57# endif
47 58
48# if HAVE_SELECT && HAVE_SYS_SELECT_H && !defined (EV_USE_SELECT) 59# ifndef EV_USE_SELECT
60# if HAVE_SELECT && HAVE_SYS_SELECT_H
49# define EV_USE_SELECT 1 61# define EV_USE_SELECT 1
62# else
63# define EV_USE_SELECT 0
64# endif
50# endif 65# endif
51 66
52# if HAVE_POLL && HAVE_POLL_H && !defined (EV_USE_POLL) 67# ifndef EV_USE_POLL
68# if HAVE_POLL && HAVE_POLL_H
53# define EV_USE_POLL 1 69# define EV_USE_POLL 1
70# else
71# define EV_USE_POLL 0
72# endif
54# endif 73# endif
55 74
56# if HAVE_EPOLL_CTL && HAVE_SYS_EPOLL_H && !defined (EV_USE_EPOLL) 75# ifndef EV_USE_EPOLL
76# if HAVE_EPOLL_CTL && HAVE_SYS_EPOLL_H
57# define EV_USE_EPOLL 1 77# define EV_USE_EPOLL 1
78# else
79# define EV_USE_EPOLL 0
80# endif
58# endif 81# endif
59 82
83# ifndef EV_USE_KQUEUE
60# if HAVE_KQUEUE && HAVE_SYS_EVENT_H && HAVE_SYS_QUEUE_H && !defined (EV_USE_KQUEUE) 84# if HAVE_KQUEUE && HAVE_SYS_EVENT_H && HAVE_SYS_QUEUE_H
61# define EV_USE_KQUEUE 1 85# define EV_USE_KQUEUE 1
86# else
87# define EV_USE_KQUEUE 0
88# endif
89# endif
90
91# ifndef EV_USE_PORT
92# if HAVE_PORT_H && HAVE_PORT_CREATE
93# define EV_USE_PORT 1
94# else
95# define EV_USE_PORT 0
96# endif
62# endif 97# endif
63 98
64#endif 99#endif
65 100
66#include <math.h> 101#include <math.h>
… …
90#endif 125#endif
91 126
92/**/ 127/**/
93 128
94#ifndef EV_USE_MONOTONIC 129#ifndef EV_USE_MONOTONIC
95# define EV_USE_MONOTONIC 1 130# define EV_USE_MONOTONIC 0
131#endif
132
133#ifndef EV_USE_REALTIME
134# define EV_USE_REALTIME 0
96#endif 135#endif
97 136
98#ifndef EV_USE_SELECT 137#ifndef EV_USE_SELECT
99# define EV_USE_SELECT 1 138# define EV_USE_SELECT 1
100# define EV_SELECT_USE_FD_SET 1
101#endif 139#endif
102 140
103#ifndef EV_USE_POLL 141#ifndef EV_USE_POLL
104# ifdef _WIN32 142# ifdef _WIN32
105# define EV_USE_POLL 0 143# define EV_USE_POLL 0
… …
114 152
115#ifndef EV_USE_KQUEUE 153#ifndef EV_USE_KQUEUE
116# define EV_USE_KQUEUE 0 154# define EV_USE_KQUEUE 0
117#endif 155#endif
118 156
119#ifndef EV_USE_REALTIME 157#ifndef EV_USE_PORT
120# define EV_USE_REALTIME 1 158# define EV_USE_PORT 0
121#endif 159#endif
122 160
123/**/ 161/**/
124
125/* darwin simply cannot be helped */
126#ifdef __APPLE__
127# undef EV_USE_POLL
128# undef EV_USE_KQUEUE
129#endif
130 162
131#ifndef CLOCK_MONOTONIC 163#ifndef CLOCK_MONOTONIC
132# undef EV_USE_MONOTONIC 164# undef EV_USE_MONOTONIC
133# define EV_USE_MONOTONIC 0 165# define EV_USE_MONOTONIC 0
134#endif 166#endif
… …
143#endif 175#endif
144 176
145/**/ 177/**/
146 178
147#define MIN_TIMEJUMP 1. /* minimum timejump that gets detected (if monotonic clock available) */ 179#define MIN_TIMEJUMP 1. /* minimum timejump that gets detected (if monotonic clock available) */
148#define MAX_BLOCKTIME 59.731 /* never wait longer than this time (to detect time jumps) */ 180#define MAX_BLOCKTIME 59.743 /* never wait longer than this time (to detect time jumps) */
149#define PID_HASHSIZE 16 /* size of pid hash table, must be power of two */ 181#define PID_HASHSIZE 16 /* size of pid hash table, must be power of two */
150/*#define CLEANUP_INTERVAL 300. /* how often to try to free memory and re-check fds */ 182/*#define CLEANUP_INTERVAL (MAX_BLOCKTIME * 5.) /* how often to try to free memory and re-check fds */
151 183
152#ifdef EV_H 184#ifdef EV_H
153# include EV_H 185# include EV_H
154#else 186#else
155# include "ev.h" 187# include "ev.h"
156#endif 188#endif
157 189
158#if __GNUC__ >= 3 190#if __GNUC__ >= 3
159# define expect(expr,value) __builtin_expect ((expr),(value)) 191# define expect(expr,value) __builtin_expect ((expr),(value))
160# define inline inline 192# define inline static inline
161#else 193#else
162# define expect(expr,value) (expr) 194# define expect(expr,value) (expr)
163# define inline static 195# define inline static
164#endif 196#endif
165 197
… …
170#define ABSPRI(w) ((w)->priority - EV_MINPRI) 202#define ABSPRI(w) ((w)->priority - EV_MINPRI)
171 203
172#define EMPTY0 /* required for microsofts broken pseudo-c compiler */ 204#define EMPTY0 /* required for microsofts broken pseudo-c compiler */
173#define EMPTY2(a,b) /* used to suppress some warnings */ 205#define EMPTY2(a,b) /* used to suppress some warnings */
174 206
175typedef struct ev_watcher *W; 207typedef ev_watcher *W;
176typedef struct ev_watcher_list *WL; 208typedef ev_watcher_list *WL;
177typedef struct ev_watcher_time *WT; 209typedef ev_watcher_time *WT;
178 210
179static int have_monotonic; /* did clock_gettime (CLOCK_MONOTONIC) work? */ 211static int have_monotonic; /* did clock_gettime (CLOCK_MONOTONIC) work? */
180 212
181#ifdef _WIN32 213#ifdef _WIN32
182# include "ev_win32.c" 214# include "ev_win32.c"
… …
359void 391void
360ev_feed_event (EV_P_ void *w, int revents) 392ev_feed_event (EV_P_ void *w, int revents)
361{ 393{
362 W w_ = (W)w; 394 W w_ = (W)w;
363 395
364 if (w_->pending) 396 if (expect_false (w_->pending))
365 { 397 {
366 pendings [ABSPRI (w_)][w_->pending - 1].events |= revents; 398 pendings [ABSPRI (w_)][w_->pending - 1].events |= revents;
367 return; 399 return;
368 } 400 }
369 401
… …
384 416
385inline void 417inline void
386fd_event (EV_P_ int fd, int revents) 418fd_event (EV_P_ int fd, int revents)
387{ 419{
388 ANFD *anfd = anfds + fd; 420 ANFD *anfd = anfds + fd;
389 struct ev_io *w; 421 ev_io *w;
390 422
391 for (w = (struct ev_io *)anfd->head; w; w = (struct ev_io *)((WL)w)->next) 423 for (w = (ev_io *)anfd->head; w; w = (ev_io *)((WL)w)->next)
392 { 424 {
393 int ev = w->events & revents; 425 int ev = w->events & revents;
394 426
395 if (ev) 427 if (ev)
396 ev_feed_event (EV_A_ (W)w, ev); 428 ev_feed_event (EV_A_ (W)w, ev);
… …
403 fd_event (EV_A_ fd, revents); 435 fd_event (EV_A_ fd, revents);
404} 436}
405 437
406/*****************************************************************************/ 438/*****************************************************************************/
407 439
408static void 440inline void
409fd_reify (EV_P) 441fd_reify (EV_P)
410{ 442{
411 int i; 443 int i;
412 444
413 for (i = 0; i < fdchangecnt; ++i) 445 for (i = 0; i < fdchangecnt; ++i)
414 { 446 {
415 int fd = fdchanges [i]; 447 int fd = fdchanges [i];
416 ANFD *anfd = anfds + fd; 448 ANFD *anfd = anfds + fd;
417 struct ev_io *w; 449 ev_io *w;
418 450
419 int events = 0; 451 int events = 0;
420 452
421 for (w = (struct ev_io *)anfd->head; w; w = (struct ev_io *)((WL)w)->next) 453 for (w = (ev_io *)anfd->head; w; w = (ev_io *)((WL)w)->next)
422 events |= w->events; 454 events |= w->events;
423 455
424#if EV_SELECT_IS_WINSOCKET 456#if EV_SELECT_IS_WINSOCKET
425 if (events) 457 if (events)
426 { 458 {
… …
430 } 462 }
431#endif 463#endif
432 464
433 anfd->reify = 0; 465 anfd->reify = 0;
434 466
435 method_modify (EV_A_ fd, anfd->events, events); 467 backend_modify (EV_A_ fd, anfd->events, events);
436 anfd->events = events; 468 anfd->events = events;
437 } 469 }
438 470
439 fdchangecnt = 0; 471 fdchangecnt = 0;
440} 472}
441 473
442static void 474static void
443fd_change (EV_P_ int fd) 475fd_change (EV_P_ int fd)
444{ 476{
445 if (anfds [fd].reify) 477 if (expect_false (anfds [fd].reify))
446 return; 478 return;
447 479
448 anfds [fd].reify = 1; 480 anfds [fd].reify = 1;
449 481
450 ++fdchangecnt; 482 ++fdchangecnt;
… …
453} 485}
454 486
455static void 487static void
456fd_kill (EV_P_ int fd) 488fd_kill (EV_P_ int fd)
457{ 489{
458 struct ev_io *w; 490 ev_io *w;
459 491
460 while ((w = (struct ev_io *)anfds [fd].head)) 492 while ((w = (ev_io *)anfds [fd].head))
461 { 493 {
462 ev_io_stop (EV_A_ w); 494 ev_io_stop (EV_A_ w);
463 ev_feed_event (EV_A_ (W)w, EV_ERROR | EV_READ | EV_WRITE); 495 ev_feed_event (EV_A_ (W)w, EV_ERROR | EV_READ | EV_WRITE);
464 } 496 }
465} 497}
466 498
467static int 499inline int
468fd_valid (int fd) 500fd_valid (int fd)
469{ 501{
470#ifdef _WIN32 502#ifdef _WIN32
471 return _get_osfhandle (fd) != -1; 503 return _get_osfhandle (fd) != -1;
472#else 504#else
… …
498 fd_kill (EV_A_ fd); 530 fd_kill (EV_A_ fd);
499 return; 531 return;
500 } 532 }
501} 533}
502 534
503/* usually called after fork if method needs to re-arm all fds from scratch */ 535/* usually called after fork if backend needs to re-arm all fds from scratch */
504static void 536static void
505fd_rearm_all (EV_P) 537fd_rearm_all (EV_P)
506{ 538{
507 int fd; 539 int fd;
508 540
… …
576static ANSIG *signals; 608static ANSIG *signals;
577static int signalmax; 609static int signalmax;
578 610
579static int sigpipe [2]; 611static int sigpipe [2];
580static sig_atomic_t volatile gotsig; 612static sig_atomic_t volatile gotsig;
581static struct ev_io sigev; 613static ev_io sigev;
582 614
583static void 615static void
584signals_init (ANSIG *base, int count) 616signals_init (ANSIG *base, int count)
585{ 617{
586 while (count--) 618 while (count--)
… …
629 for (w = signals [signum].head; w; w = w->next) 661 for (w = signals [signum].head; w; w = w->next)
630 ev_feed_event (EV_A_ (W)w, EV_SIGNAL); 662 ev_feed_event (EV_A_ (W)w, EV_SIGNAL);
631} 663}
632 664
633static void 665static void
634sigcb (EV_P_ struct ev_io *iow, int revents) 666sigcb (EV_P_ ev_io *iow, int revents)
635{ 667{
636 int signum; 668 int signum;
637 669
638 read (sigpipe [0], &revents, 1); 670 read (sigpipe [0], &revents, 1);
639 gotsig = 0; 671 gotsig = 0;
… …
641 for (signum = signalmax; signum--; ) 673 for (signum = signalmax; signum--; )
642 if (signals [signum].gotsig) 674 if (signals [signum].gotsig)
643 ev_feed_signal_event (EV_A_ signum + 1); 675 ev_feed_signal_event (EV_A_ signum + 1);
644} 676}
645 677
646inline void 678static void
647fd_intern (int fd) 679fd_intern (int fd)
648{ 680{
649#ifdef _WIN32 681#ifdef _WIN32
650 int arg = 1; 682 int arg = 1;
651 ioctlsocket (_get_osfhandle (fd), FIONBIO, &arg); 683 ioctlsocket (_get_osfhandle (fd), FIONBIO, &arg);
… …
666 ev_unref (EV_A); /* child watcher should not keep loop alive */ 698 ev_unref (EV_A); /* child watcher should not keep loop alive */
667} 699}
668 700
669/*****************************************************************************/ 701/*****************************************************************************/
670 702
671static struct ev_child *childs [PID_HASHSIZE]; 703static ev_child *childs [PID_HASHSIZE];
672 704
673#ifndef _WIN32 705#ifndef _WIN32
674 706
675static struct ev_signal childev; 707static ev_signal childev;
676 708
677#ifndef WCONTINUED 709#ifndef WCONTINUED
678# define WCONTINUED 0 710# define WCONTINUED 0
679#endif 711#endif
680 712
681static void 713static void
682child_reap (EV_P_ struct ev_signal *sw, int chain, int pid, int status) 714child_reap (EV_P_ ev_signal *sw, int chain, int pid, int status)
683{ 715{
684 struct ev_child *w; 716 ev_child *w;
685 717
686 for (w = (struct ev_child *)childs [chain & (PID_HASHSIZE - 1)]; w; w = (struct ev_child *)((WL)w)->next) 718 for (w = (ev_child *)childs [chain & (PID_HASHSIZE - 1)]; w; w = (ev_child *)((WL)w)->next)
687 if (w->pid == pid || !w->pid) 719 if (w->pid == pid || !w->pid)
688 { 720 {
689 ev_priority (w) = ev_priority (sw); /* need to do it *now* */ 721 ev_priority (w) = ev_priority (sw); /* need to do it *now* */
690 w->rpid = pid; 722 w->rpid = pid;
691 w->rstatus = status; 723 w->rstatus = status;
692 ev_feed_event (EV_A_ (W)w, EV_CHILD); 724 ev_feed_event (EV_A_ (W)w, EV_CHILD);
693 } 725 }
694} 726}
695 727
696static void 728static void
697childcb (EV_P_ struct ev_signal *sw, int revents) 729childcb (EV_P_ ev_signal *sw, int revents)
698{ 730{
699 int pid, status; 731 int pid, status;
700 732
701 if (0 < (pid = waitpid (-1, &status, WNOHANG | WUNTRACED | WCONTINUED))) 733 if (0 < (pid = waitpid (-1, &status, WNOHANG | WUNTRACED | WCONTINUED)))
702 { 734 {
703 /* make sure we are called again until all childs have been reaped */ 735 /* make sure we are called again until all childs have been reaped */
736 /* we need to do it this way so that the callback gets called before we continue */
704 ev_feed_event (EV_A_ (W)sw, EV_SIGNAL); 737 ev_feed_event (EV_A_ (W)sw, EV_SIGNAL);
705 738
706 child_reap (EV_A_ sw, pid, pid, status); 739 child_reap (EV_A_ sw, pid, pid, status);
707 child_reap (EV_A_ sw, 0, pid, status); /* this might trigger a watcher twice, but event catches that */ 740 child_reap (EV_A_ sw, 0, pid, status); /* this might trigger a watcher twice, but feed_event catches that */
708 } 741 }
709} 742}
710 743
711#endif 744#endif
712 745
713/*****************************************************************************/ 746/*****************************************************************************/
714 747
748#if EV_USE_PORT
749# include "ev_port.c"
750#endif
715#if EV_USE_KQUEUE 751#if EV_USE_KQUEUE
716# include "ev_kqueue.c" 752# include "ev_kqueue.c"
717#endif 753#endif
718#if EV_USE_EPOLL 754#if EV_USE_EPOLL
719# include "ev_epoll.c" 755# include "ev_epoll.c"
… …
748 || getgid () != getegid (); 784 || getgid () != getegid ();
749#endif 785#endif
750} 786}
751 787
752unsigned int 788unsigned int
753ev_method (EV_P) 789ev_supported_backends (void)
754{ 790{
755 return method; 791 unsigned int flags = 0;
792
793 if (EV_USE_PORT ) flags |= EVBACKEND_PORT;
794 if (EV_USE_KQUEUE) flags |= EVBACKEND_KQUEUE;
795 if (EV_USE_EPOLL ) flags |= EVBACKEND_EPOLL;
796 if (EV_USE_POLL ) flags |= EVBACKEND_POLL;
797 if (EV_USE_SELECT) flags |= EVBACKEND_SELECT;
798
799 return flags;
800}
801
802unsigned int
803ev_recommended_backends (void)
804{
805 unsigned int flags = ev_supported_backends ();
806
807#ifndef __NetBSD__
808 /* kqueue is borked on everything but netbsd apparently */
809 /* it usually doesn't work correctly on anything but sockets and pipes */
810 flags &= ~EVBACKEND_KQUEUE;
811#endif
812#ifdef __APPLE__
813 // flags &= ~EVBACKEND_KQUEUE; for documentation
814 flags &= ~EVBACKEND_POLL;
815#endif
816
817 return flags;
818}
819
820unsigned int
821ev_embeddable_backends (void)
822{
823 return EVBACKEND_EPOLL
824 | EVBACKEND_KQUEUE
825 | EVBACKEND_PORT;
826}
827
828unsigned int
829ev_backend (EV_P)
830{
831 return backend;
756} 832}
757 833
758static void 834static void
759loop_init (EV_P_ unsigned int flags) 835loop_init (EV_P_ unsigned int flags)
760{ 836{
761 if (!method) 837 if (!backend)
762 { 838 {
763#if EV_USE_MONOTONIC 839#if EV_USE_MONOTONIC
764 { 840 {
765 struct timespec ts; 841 struct timespec ts;
766 if (!clock_gettime (CLOCK_MONOTONIC, &ts)) 842 if (!clock_gettime (CLOCK_MONOTONIC, &ts))
… …
771 ev_rt_now = ev_time (); 847 ev_rt_now = ev_time ();
772 mn_now = get_clock (); 848 mn_now = get_clock ();
773 now_floor = mn_now; 849 now_floor = mn_now;
774 rtmn_diff = ev_rt_now - mn_now; 850 rtmn_diff = ev_rt_now - mn_now;
775 851
776 if (!(flags & EVFLAG_NOENV) && !enable_secure () && getenv ("LIBEV_FLAGS")) 852 if (!(flags & EVFLAG_NOENV)
853 && !enable_secure ()
854 && getenv ("LIBEV_FLAGS"))
777 flags = atoi (getenv ("LIBEV_FLAGS")); 855 flags = atoi (getenv ("LIBEV_FLAGS"));
778 856
779 if (!(flags & 0x0000ffff)) 857 if (!(flags & 0x0000ffffUL))
780 flags |= 0x0000ffff; 858 flags |= ev_recommended_backends ();
781 859
782 method = 0; 860 backend = 0;
861#if EV_USE_PORT
862 if (!backend && (flags & EVBACKEND_PORT )) backend = port_init (EV_A_ flags);
863#endif
783#if EV_USE_KQUEUE 864#if EV_USE_KQUEUE
784 if (!method && (flags & EVMETHOD_KQUEUE)) method = kqueue_init (EV_A_ flags); 865 if (!backend && (flags & EVBACKEND_KQUEUE)) backend = kqueue_init (EV_A_ flags);
785#endif 866#endif
786#if EV_USE_EPOLL 867#if EV_USE_EPOLL
787 if (!method && (flags & EVMETHOD_EPOLL )) method = epoll_init (EV_A_ flags); 868 if (!backend && (flags & EVBACKEND_EPOLL )) backend = epoll_init (EV_A_ flags);
788#endif 869#endif
789#if EV_USE_POLL 870#if EV_USE_POLL
790 if (!method && (flags & EVMETHOD_POLL )) method = poll_init (EV_A_ flags); 871 if (!backend && (flags & EVBACKEND_POLL )) backend = poll_init (EV_A_ flags);
791#endif 872#endif
792#if EV_USE_SELECT 873#if EV_USE_SELECT
793 if (!method && (flags & EVMETHOD_SELECT)) method = select_init (EV_A_ flags); 874 if (!backend && (flags & EVBACKEND_SELECT)) backend = select_init (EV_A_ flags);
794#endif 875#endif
795 876
796 ev_init (&sigev, sigcb); 877 ev_init (&sigev, sigcb);
797 ev_set_priority (&sigev, EV_MAXPRI); 878 ev_set_priority (&sigev, EV_MAXPRI);
798 } 879 }
799} 880}
800 881
801void 882static void
802loop_destroy (EV_P) 883loop_destroy (EV_P)
803{ 884{
804 int i; 885 int i;
805 886
887#if EV_USE_PORT
888 if (backend == EVBACKEND_PORT ) port_destroy (EV_A);
889#endif
806#if EV_USE_KQUEUE 890#if EV_USE_KQUEUE
807 if (method == EVMETHOD_KQUEUE) kqueue_destroy (EV_A); 891 if (backend == EVBACKEND_KQUEUE) kqueue_destroy (EV_A);
808#endif 892#endif
809#if EV_USE_EPOLL 893#if EV_USE_EPOLL
810 if (method == EVMETHOD_EPOLL ) epoll_destroy (EV_A); 894 if (backend == EVBACKEND_EPOLL ) epoll_destroy (EV_A);
811#endif 895#endif
812#if EV_USE_POLL 896#if EV_USE_POLL
813 if (method == EVMETHOD_POLL ) poll_destroy (EV_A); 897 if (backend == EVBACKEND_POLL ) poll_destroy (EV_A);
814#endif 898#endif
815#if EV_USE_SELECT 899#if EV_USE_SELECT
816 if (method == EVMETHOD_SELECT) select_destroy (EV_A); 900 if (backend == EVBACKEND_SELECT) select_destroy (EV_A);
817#endif 901#endif
818 902
819 for (i = NUMPRI; i--; ) 903 for (i = NUMPRI; i--; )
820 array_free (pending, [i]); 904 array_free (pending, [i]);
821 905
… …
827#endif 911#endif
828 array_free (idle, EMPTY0); 912 array_free (idle, EMPTY0);
829 array_free (prepare, EMPTY0); 913 array_free (prepare, EMPTY0);
830 array_free (check, EMPTY0); 914 array_free (check, EMPTY0);
831 915
832 method = 0; 916 backend = 0;
833} 917}
834 918
835static void 919static void
836loop_fork (EV_P) 920loop_fork (EV_P)
837{ 921{
922#if EV_USE_PORT
923 if (backend == EVBACKEND_PORT ) port_fork (EV_A);
924#endif
925#if EV_USE_KQUEUE
926 if (backend == EVBACKEND_KQUEUE) kqueue_fork (EV_A);
927#endif
838#if EV_USE_EPOLL 928#if EV_USE_EPOLL
839 if (method == EVMETHOD_EPOLL ) epoll_fork (EV_A); 929 if (backend == EVBACKEND_EPOLL ) epoll_fork (EV_A);
840#endif
841#if EV_USE_KQUEUE
842 if (method == EVMETHOD_KQUEUE) kqueue_fork (EV_A);
843#endif 930#endif
844 931
845 if (ev_is_active (&sigev)) 932 if (ev_is_active (&sigev))
846 { 933 {
847 /* default loop */ 934 /* default loop */
… …
868 955
869 memset (loop, 0, sizeof (struct ev_loop)); 956 memset (loop, 0, sizeof (struct ev_loop));
870 957
871 loop_init (EV_A_ flags); 958 loop_init (EV_A_ flags);
872 959
873 if (ev_method (EV_A)) 960 if (ev_backend (EV_A))
874 return loop; 961 return loop;
875 962
876 return 0; 963 return 0;
877} 964}
878 965
… …
891 978
892#endif 979#endif
893 980
894#if EV_MULTIPLICITY 981#if EV_MULTIPLICITY
895struct ev_loop * 982struct ev_loop *
896ev_default_loop_ (unsigned int flags) 983ev_default_loop_init (unsigned int flags)
897#else 984#else
898int 985int
899ev_default_loop (unsigned int flags) 986ev_default_loop (unsigned int flags)
900#endif 987#endif
901{ 988{
… …
911 ev_default_loop_ptr = 1; 998 ev_default_loop_ptr = 1;
912#endif 999#endif
913 1000
914 loop_init (EV_A_ flags); 1001 loop_init (EV_A_ flags);
915 1002
916 if (ev_method (EV_A)) 1003 if (ev_backend (EV_A))
917 { 1004 {
918 siginit (EV_A); 1005 siginit (EV_A);
919 1006
920#ifndef _WIN32 1007#ifndef _WIN32
921 ev_signal_init (&childev, childcb, SIGCHLD); 1008 ev_signal_init (&childev, childcb, SIGCHLD);
… …
957{ 1044{
958#if EV_MULTIPLICITY 1045#if EV_MULTIPLICITY
959 struct ev_loop *loop = ev_default_loop_ptr; 1046 struct ev_loop *loop = ev_default_loop_ptr;
960#endif 1047#endif
961 1048
962 if (method) 1049 if (backend)
963 postfork = 1; 1050 postfork = 1;
964} 1051}
965 1052
966/*****************************************************************************/ 1053/*****************************************************************************/
967 1054
… …
975 return 1; 1062 return 1;
976 1063
977 return 0; 1064 return 0;
978} 1065}
979 1066
980static void 1067inline void
981call_pending (EV_P) 1068call_pending (EV_P)
982{ 1069{
983 int pri; 1070 int pri;
984 1071
985 for (pri = NUMPRI; pri--; ) 1072 for (pri = NUMPRI; pri--; )
986 while (pendingcnt [pri]) 1073 while (pendingcnt [pri])
987 { 1074 {
988 ANPENDING *p = pendings [pri] + --pendingcnt [pri]; 1075 ANPENDING *p = pendings [pri] + --pendingcnt [pri];
989 1076
990 if (p->w) 1077 if (expect_true (p->w))
991 { 1078 {
992 p->w->pending = 0; 1079 p->w->pending = 0;
993 EV_CB_INVOKE (p->w, p->events); 1080 EV_CB_INVOKE (p->w, p->events);
994 } 1081 }
995 } 1082 }
996} 1083}
997 1084
998static void 1085inline void
999timers_reify (EV_P) 1086timers_reify (EV_P)
1000{ 1087{
1001 while (timercnt && ((WT)timers [0])->at <= mn_now) 1088 while (timercnt && ((WT)timers [0])->at <= mn_now)
1002 { 1089 {
1003 struct ev_timer *w = timers [0]; 1090 ev_timer *w = timers [0];
1004 1091
1005 assert (("inactive timer on timer heap detected", ev_is_active (w))); 1092 assert (("inactive timer on timer heap detected", ev_is_active (w)));
1006 1093
1007 /* first reschedule or stop timer */ 1094 /* first reschedule or stop timer */
1008 if (w->repeat) 1095 if (w->repeat)
… …
1021 ev_feed_event (EV_A_ (W)w, EV_TIMEOUT); 1108 ev_feed_event (EV_A_ (W)w, EV_TIMEOUT);
1022 } 1109 }
1023} 1110}
1024 1111
1025#if EV_PERIODICS 1112#if EV_PERIODICS
1026static void 1113inline void
1027periodics_reify (EV_P) 1114periodics_reify (EV_P)
1028{ 1115{
1029 while (periodiccnt && ((WT)periodics [0])->at <= ev_rt_now) 1116 while (periodiccnt && ((WT)periodics [0])->at <= ev_rt_now)
1030 { 1117 {
1031 struct ev_periodic *w = periodics [0]; 1118 ev_periodic *w = periodics [0];
1032 1119
1033 assert (("inactive timer on periodic heap detected", ev_is_active (w))); 1120 assert (("inactive timer on periodic heap detected", ev_is_active (w)));
1034 1121
1035 /* first reschedule or stop timer */ 1122 /* first reschedule or stop timer */
1036 if (w->reschedule_cb) 1123 if (w->reschedule_cb)
… …
1058 int i; 1145 int i;
1059 1146
1060 /* adjust periodics after time jump */ 1147 /* adjust periodics after time jump */
1061 for (i = 0; i < periodiccnt; ++i) 1148 for (i = 0; i < periodiccnt; ++i)
1062 { 1149 {
1063 struct ev_periodic *w = periodics [i]; 1150 ev_periodic *w = periodics [i];
1064 1151
1065 if (w->reschedule_cb) 1152 if (w->reschedule_cb)
1066 ((WT)w)->at = w->reschedule_cb (w, ev_rt_now); 1153 ((WT)w)->at = w->reschedule_cb (w, ev_rt_now);
1067 else if (w->interval) 1154 else if (w->interval)
1068 ((WT)w)->at += ceil ((ev_rt_now - ((WT)w)->at) / w->interval) * w->interval; 1155 ((WT)w)->at += ceil ((ev_rt_now - ((WT)w)->at) / w->interval) * w->interval;
… …
1090 ev_rt_now = ev_time (); 1177 ev_rt_now = ev_time ();
1091 return 1; 1178 return 1;
1092 } 1179 }
1093} 1180}
1094 1181
1095static void 1182inline void
1096time_update (EV_P) 1183time_update (EV_P)
1097{ 1184{
1098 int i; 1185 int i;
1099 1186
1100#if EV_USE_MONOTONIC 1187#if EV_USE_MONOTONIC
… …
1158static int loop_done; 1245static int loop_done;
1159 1246
1160void 1247void
1161ev_loop (EV_P_ int flags) 1248ev_loop (EV_P_ int flags)
1162{ 1249{
1163 double block;
1164 loop_done = flags & (EVLOOP_ONESHOT | EVLOOP_NONBLOCK) ? 1 : 0; 1250 loop_done = flags & (EVLOOP_ONESHOT | EVLOOP_NONBLOCK)
1251 ? EVUNLOOP_ONE
1252 : EVUNLOOP_CANCEL;
1165 1253
1166 while (activecnt) 1254 while (activecnt)
1167 { 1255 {
1168 /* queue check watchers (and execute them) */ 1256 /* queue check watchers (and execute them) */
1169 if (expect_false (preparecnt)) 1257 if (expect_false (preparecnt))
… …
1178 1266
1179 /* update fd-related kernel structures */ 1267 /* update fd-related kernel structures */
1180 fd_reify (EV_A); 1268 fd_reify (EV_A);
1181 1269
1182 /* calculate blocking time */ 1270 /* calculate blocking time */
1271 {
1272 double block;
1183 1273
1184 /* we only need this for !monotonic clock or timers, but as we basically 1274 if (flags & EVLOOP_NONBLOCK || idlecnt)
1185 always have timers, we just calculate it always */ 1275 block = 0.; /* do not block at all */
1276 else
1277 {
1278 /* update time to cancel out callback processing overhead */
1186#if EV_USE_MONOTONIC 1279#if EV_USE_MONOTONIC
1187 if (expect_true (have_monotonic)) 1280 if (expect_true (have_monotonic))
1188 time_update_monotonic (EV_A); 1281 time_update_monotonic (EV_A);
1189 else 1282 else
1190#endif 1283#endif
1191 { 1284 {
1192 ev_rt_now = ev_time (); 1285 ev_rt_now = ev_time ();
1193 mn_now = ev_rt_now; 1286 mn_now = ev_rt_now;
1194 } 1287 }
1195 1288
1196 if (flags & EVLOOP_NONBLOCK || idlecnt)
1197 block = 0.;
1198 else
1199 {
1200 block = MAX_BLOCKTIME; 1289 block = MAX_BLOCKTIME;
1201 1290
1202 if (timercnt) 1291 if (timercnt)
1203 { 1292 {
1204 ev_tstamp to = ((WT)timers [0])->at - mn_now + method_fudge; 1293 ev_tstamp to = ((WT)timers [0])->at - mn_now + backend_fudge;
1205 if (block > to) block = to; 1294 if (block > to) block = to;
1206 } 1295 }
1207 1296
1208#if EV_PERIODICS 1297#if EV_PERIODICS
1209 if (periodiccnt) 1298 if (periodiccnt)
1210 { 1299 {
1211 ev_tstamp to = ((WT)periodics [0])->at - ev_rt_now + method_fudge; 1300 ev_tstamp to = ((WT)periodics [0])->at - ev_rt_now + backend_fudge;
1212 if (block > to) block = to; 1301 if (block > to) block = to;
1213 } 1302 }
1214#endif 1303#endif
1215 1304
1216 if (block < 0.) block = 0.; 1305 if (expect_false (block < 0.)) block = 0.;
1217 } 1306 }
1218 1307
1219 method_poll (EV_A_ block); 1308 backend_poll (EV_A_ block);
1309 }
1220 1310
1221 /* update ev_rt_now, do magic */ 1311 /* update ev_rt_now, do magic */
1222 time_update (EV_A); 1312 time_update (EV_A);
1223 1313
1224 /* queue pending timers and reschedule them */ 1314 /* queue pending timers and reschedule them */
1225 timers_reify (EV_A); /* relative timers called last */ 1315 timers_reify (EV_A); /* relative timers called last */
1226#if EV_PERIODICS 1316#if EV_PERIODICS
1227 periodics_reify (EV_A); /* absolute timers called first */ 1317 periodics_reify (EV_A); /* absolute timers called first */
1228#endif 1318#endif
1229 1319
1230 /* queue idle watchers unless io or timers are pending */ 1320 /* queue idle watchers unless other events are pending */
1231 if (idlecnt && !any_pending (EV_A)) 1321 if (idlecnt && !any_pending (EV_A))
1232 queue_events (EV_A_ (W *)idles, idlecnt, EV_IDLE); 1322 queue_events (EV_A_ (W *)idles, idlecnt, EV_IDLE);
1233 1323
1234 /* queue check watchers, to be executed first */ 1324 /* queue check watchers, to be executed first */
1235 if (checkcnt) 1325 if (expect_false (checkcnt))
1236 queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK); 1326 queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK);
1237 1327
1238 call_pending (EV_A); 1328 call_pending (EV_A);
1239 1329
1240 if (loop_done) 1330 if (expect_false (loop_done))
1241 break; 1331 break;
1242 } 1332 }
1243 1333
1244 if (loop_done != 2) 1334 if (loop_done == EVUNLOOP_ONE)
1245 loop_done = 0; 1335 loop_done = EVUNLOOP_CANCEL;
1246} 1336}
1247 1337
1248void 1338void
1249ev_unloop (EV_P_ int how) 1339ev_unloop (EV_P_ int how)
1250{ 1340{
… …
1303} 1393}
1304 1394
1305/*****************************************************************************/ 1395/*****************************************************************************/
1306 1396
1307void 1397void
1308ev_io_start (EV_P_ struct ev_io *w) 1398ev_io_start (EV_P_ ev_io *w)
1309{ 1399{
1310 int fd = w->fd; 1400 int fd = w->fd;
1311 1401
1312 if (ev_is_active (w)) 1402 if (expect_false (ev_is_active (w)))
1313 return; 1403 return;
1314 1404
1315 assert (("ev_io_start called with negative fd", fd >= 0)); 1405 assert (("ev_io_start called with negative fd", fd >= 0));
1316 1406
1317 ev_start (EV_A_ (W)w, 1); 1407 ev_start (EV_A_ (W)w, 1);
… …
1320 1410
1321 fd_change (EV_A_ fd); 1411 fd_change (EV_A_ fd);
1322} 1412}
1323 1413
1324void 1414void
1325ev_io_stop (EV_P_ struct ev_io *w) 1415ev_io_stop (EV_P_ ev_io *w)
1326{ 1416{
1327 ev_clear_pending (EV_A_ (W)w); 1417 ev_clear_pending (EV_A_ (W)w);
1328 if (!ev_is_active (w)) 1418 if (expect_false (!ev_is_active (w)))
1329 return; 1419 return;
1330 1420
1331 assert (("ev_io_start called with illegal fd (must stay constant after start!)", w->fd >= 0 && w->fd < anfdmax)); 1421 assert (("ev_io_start called with illegal fd (must stay constant after start!)", w->fd >= 0 && w->fd < anfdmax));
1332 1422
1333 wlist_del ((WL *)&anfds[w->fd].head, (WL)w); 1423 wlist_del ((WL *)&anfds[w->fd].head, (WL)w);
… …
1335 1425
1336 fd_change (EV_A_ w->fd); 1426 fd_change (EV_A_ w->fd);
1337} 1427}
1338 1428
1339void 1429void
1340ev_timer_start (EV_P_ struct ev_timer *w) 1430ev_timer_start (EV_P_ ev_timer *w)
1341{ 1431{
1342 if (ev_is_active (w)) 1432 if (expect_false (ev_is_active (w)))
1343 return; 1433 return;
1344 1434
1345 ((WT)w)->at += mn_now; 1435 ((WT)w)->at += mn_now;
1346 1436
1347 assert (("ev_timer_start called with negative timer repeat value", w->repeat >= 0.)); 1437 assert (("ev_timer_start called with negative timer repeat value", w->repeat >= 0.));
1348 1438
1349 ev_start (EV_A_ (W)w, ++timercnt); 1439 ev_start (EV_A_ (W)w, ++timercnt);
1350 array_needsize (struct ev_timer *, timers, timermax, timercnt, EMPTY2); 1440 array_needsize (ev_timer *, timers, timermax, timercnt, EMPTY2);
1351 timers [timercnt - 1] = w; 1441 timers [timercnt - 1] = w;
1352 upheap ((WT *)timers, timercnt - 1); 1442 upheap ((WT *)timers, timercnt - 1);
1353 1443
1354 assert (("internal timer heap corruption", timers [((W)w)->active - 1] == w)); 1444 assert (("internal timer heap corruption", timers [((W)w)->active - 1] == w));
1355} 1445}
1356 1446
1357void 1447void
1358ev_timer_stop (EV_P_ struct ev_timer *w) 1448ev_timer_stop (EV_P_ ev_timer *w)
1359{ 1449{
1360 ev_clear_pending (EV_A_ (W)w); 1450 ev_clear_pending (EV_A_ (W)w);
1361 if (!ev_is_active (w)) 1451 if (expect_false (!ev_is_active (w)))
1362 return; 1452 return;
1363 1453
1364 assert (("internal timer heap corruption", timers [((W)w)->active - 1] == w)); 1454 assert (("internal timer heap corruption", timers [((W)w)->active - 1] == w));
1365 1455
1366 if (((W)w)->active < timercnt--) 1456 if (expect_true (((W)w)->active < timercnt--))
1367 { 1457 {
1368 timers [((W)w)->active - 1] = timers [timercnt]; 1458 timers [((W)w)->active - 1] = timers [timercnt];
1369 adjustheap ((WT *)timers, timercnt, ((W)w)->active - 1); 1459 adjustheap ((WT *)timers, timercnt, ((W)w)->active - 1);
1370 } 1460 }
1371 1461
… …
1373 1463
1374 ev_stop (EV_A_ (W)w); 1464 ev_stop (EV_A_ (W)w);
1375} 1465}
1376 1466
1377void 1467void
1378ev_timer_again (EV_P_ struct ev_timer *w) 1468ev_timer_again (EV_P_ ev_timer *w)
1379{ 1469{
1380 if (ev_is_active (w)) 1470 if (ev_is_active (w))
1381 { 1471 {
1382 if (w->repeat) 1472 if (w->repeat)
1383 { 1473 {
… …
1394 } 1484 }
1395} 1485}
1396 1486
1397#if EV_PERIODICS 1487#if EV_PERIODICS
1398void 1488void
1399ev_periodic_start (EV_P_ struct ev_periodic *w) 1489ev_periodic_start (EV_P_ ev_periodic *w)
1400{ 1490{
1401 if (ev_is_active (w)) 1491 if (expect_false (ev_is_active (w)))
1402 return; 1492 return;
1403 1493
1404 if (w->reschedule_cb) 1494 if (w->reschedule_cb)
1405 ((WT)w)->at = w->reschedule_cb (w, ev_rt_now); 1495 ((WT)w)->at = w->reschedule_cb (w, ev_rt_now);
1406 else if (w->interval) 1496 else if (w->interval)
… …
1409 /* this formula differs from the one in periodic_reify because we do not always round up */ 1499 /* this formula differs from the one in periodic_reify because we do not always round up */
1410 ((WT)w)->at += ceil ((ev_rt_now - ((WT)w)->at) / w->interval) * w->interval; 1500 ((WT)w)->at += ceil ((ev_rt_now - ((WT)w)->at) / w->interval) * w->interval;
1411 } 1501 }
1412 1502
1413 ev_start (EV_A_ (W)w, ++periodiccnt); 1503 ev_start (EV_A_ (W)w, ++periodiccnt);
1414 array_needsize (struct ev_periodic *, periodics, periodicmax, periodiccnt, EMPTY2); 1504 array_needsize (ev_periodic *, periodics, periodicmax, periodiccnt, EMPTY2);
1415 periodics [periodiccnt - 1] = w; 1505 periodics [periodiccnt - 1] = w;
1416 upheap ((WT *)periodics, periodiccnt - 1); 1506 upheap ((WT *)periodics, periodiccnt - 1);
1417 1507
1418 assert (("internal periodic heap corruption", periodics [((W)w)->active - 1] == w)); 1508 assert (("internal periodic heap corruption", periodics [((W)w)->active - 1] == w));
1419} 1509}
1420 1510
1421void 1511void
1422ev_periodic_stop (EV_P_ struct ev_periodic *w) 1512ev_periodic_stop (EV_P_ ev_periodic *w)
1423{ 1513{
1424 ev_clear_pending (EV_A_ (W)w); 1514 ev_clear_pending (EV_A_ (W)w);
1425 if (!ev_is_active (w)) 1515 if (expect_false (!ev_is_active (w)))
1426 return; 1516 return;
1427 1517
1428 assert (("internal periodic heap corruption", periodics [((W)w)->active - 1] == w)); 1518 assert (("internal periodic heap corruption", periodics [((W)w)->active - 1] == w));
1429 1519
1430 if (((W)w)->active < periodiccnt--) 1520 if (expect_true (((W)w)->active < periodiccnt--))
1431 { 1521 {
1432 periodics [((W)w)->active - 1] = periodics [periodiccnt]; 1522 periodics [((W)w)->active - 1] = periodics [periodiccnt];
1433 adjustheap ((WT *)periodics, periodiccnt, ((W)w)->active - 1); 1523 adjustheap ((WT *)periodics, periodiccnt, ((W)w)->active - 1);
1434 } 1524 }
1435 1525
1436 ev_stop (EV_A_ (W)w); 1526 ev_stop (EV_A_ (W)w);
1437} 1527}
1438 1528
1439void 1529void
1440ev_periodic_again (EV_P_ struct ev_periodic *w) 1530ev_periodic_again (EV_P_ ev_periodic *w)
1441{ 1531{
1442 /* TODO: use adjustheap and recalculation */ 1532 /* TODO: use adjustheap and recalculation */
1443 ev_periodic_stop (EV_A_ w); 1533 ev_periodic_stop (EV_A_ w);
1444 ev_periodic_start (EV_A_ w); 1534 ev_periodic_start (EV_A_ w);
1445} 1535}
1446#endif 1536#endif
1447 1537
1448void 1538void
1449ev_idle_start (EV_P_ struct ev_idle *w) 1539ev_idle_start (EV_P_ ev_idle *w)
1450{ 1540{
1451 if (ev_is_active (w)) 1541 if (expect_false (ev_is_active (w)))
1452 return; 1542 return;
1453 1543
1454 ev_start (EV_A_ (W)w, ++idlecnt); 1544 ev_start (EV_A_ (W)w, ++idlecnt);
1455 array_needsize (struct ev_idle *, idles, idlemax, idlecnt, EMPTY2); 1545 array_needsize (ev_idle *, idles, idlemax, idlecnt, EMPTY2);
1456 idles [idlecnt - 1] = w; 1546 idles [idlecnt - 1] = w;
1457} 1547}
1458 1548
1459void 1549void
1460ev_idle_stop (EV_P_ struct ev_idle *w) 1550ev_idle_stop (EV_P_ ev_idle *w)
1461{ 1551{
1462 ev_clear_pending (EV_A_ (W)w); 1552 ev_clear_pending (EV_A_ (W)w);
1463 if (!ev_is_active (w)) 1553 if (expect_false (!ev_is_active (w)))
1464 return; 1554 return;
1465 1555
1466 idles [((W)w)->active - 1] = idles [--idlecnt]; 1556 idles [((W)w)->active - 1] = idles [--idlecnt];
1467 ev_stop (EV_A_ (W)w); 1557 ev_stop (EV_A_ (W)w);
1468} 1558}
1469 1559
1470void 1560void
1471ev_prepare_start (EV_P_ struct ev_prepare *w) 1561ev_prepare_start (EV_P_ ev_prepare *w)
1472{ 1562{
1473 if (ev_is_active (w)) 1563 if (expect_false (ev_is_active (w)))
1474 return; 1564 return;
1475 1565
1476 ev_start (EV_A_ (W)w, ++preparecnt); 1566 ev_start (EV_A_ (W)w, ++preparecnt);
1477 array_needsize (struct ev_prepare *, prepares, preparemax, preparecnt, EMPTY2); 1567 array_needsize (ev_prepare *, prepares, preparemax, preparecnt, EMPTY2);
1478 prepares [preparecnt - 1] = w; 1568 prepares [preparecnt - 1] = w;
1479} 1569}
1480 1570
1481void 1571void
1482ev_prepare_stop (EV_P_ struct ev_prepare *w) 1572ev_prepare_stop (EV_P_ ev_prepare *w)
1483{ 1573{
1484 ev_clear_pending (EV_A_ (W)w); 1574 ev_clear_pending (EV_A_ (W)w);
1485 if (!ev_is_active (w)) 1575 if (expect_false (!ev_is_active (w)))
1486 return; 1576 return;
1487 1577
1488 prepares [((W)w)->active - 1] = prepares [--preparecnt]; 1578 prepares [((W)w)->active - 1] = prepares [--preparecnt];
1489 ev_stop (EV_A_ (W)w); 1579 ev_stop (EV_A_ (W)w);
1490} 1580}
1491 1581
1492void 1582void
1493ev_check_start (EV_P_ struct ev_check *w) 1583ev_check_start (EV_P_ ev_check *w)
1494{ 1584{
1495 if (ev_is_active (w)) 1585 if (expect_false (ev_is_active (w)))
1496 return; 1586 return;
1497 1587
1498 ev_start (EV_A_ (W)w, ++checkcnt); 1588 ev_start (EV_A_ (W)w, ++checkcnt);
1499 array_needsize (struct ev_check *, checks, checkmax, checkcnt, EMPTY2); 1589 array_needsize (ev_check *, checks, checkmax, checkcnt, EMPTY2);
1500 checks [checkcnt - 1] = w; 1590 checks [checkcnt - 1] = w;
1501} 1591}
1502 1592
1503void 1593void
1504ev_check_stop (EV_P_ struct ev_check *w) 1594ev_check_stop (EV_P_ ev_check *w)
1505{ 1595{
1506 ev_clear_pending (EV_A_ (W)w); 1596 ev_clear_pending (EV_A_ (W)w);
1507 if (!ev_is_active (w)) 1597 if (expect_false (!ev_is_active (w)))
1508 return; 1598 return;
1509 1599
1510 checks [((W)w)->active - 1] = checks [--checkcnt]; 1600 checks [((W)w)->active - 1] = checks [--checkcnt];
1511 ev_stop (EV_A_ (W)w); 1601 ev_stop (EV_A_ (W)w);
1512} 1602}
… …
1514#ifndef SA_RESTART 1604#ifndef SA_RESTART
1515# define SA_RESTART 0 1605# define SA_RESTART 0
1516#endif 1606#endif
1517 1607
1518void 1608void
1519ev_signal_start (EV_P_ struct ev_signal *w) 1609ev_signal_start (EV_P_ ev_signal *w)
1520{ 1610{
1521#if EV_MULTIPLICITY 1611#if EV_MULTIPLICITY
1522 assert (("signal watchers are only supported in the default loop", loop == ev_default_loop_ptr)); 1612 assert (("signal watchers are only supported in the default loop", loop == ev_default_loop_ptr));
1523#endif 1613#endif
1524 if (ev_is_active (w)) 1614 if (expect_false (ev_is_active (w)))
1525 return; 1615 return;
1526 1616
1527 assert (("ev_signal_start called with illegal signal number", w->signum > 0)); 1617 assert (("ev_signal_start called with illegal signal number", w->signum > 0));
1528 1618
1529 ev_start (EV_A_ (W)w, 1); 1619 ev_start (EV_A_ (W)w, 1);
… …
1543#endif 1633#endif
1544 } 1634 }
1545} 1635}
1546 1636
1547void 1637void
1548ev_signal_stop (EV_P_ struct ev_signal *w) 1638ev_signal_stop (EV_P_ ev_signal *w)
1549{ 1639{
1550 ev_clear_pending (EV_A_ (W)w); 1640 ev_clear_pending (EV_A_ (W)w);
1551 if (!ev_is_active (w)) 1641 if (expect_false (!ev_is_active (w)))
1552 return; 1642 return;
1553 1643
1554 wlist_del ((WL *)&signals [w->signum - 1].head, (WL)w); 1644 wlist_del ((WL *)&signals [w->signum - 1].head, (WL)w);
1555 ev_stop (EV_A_ (W)w); 1645 ev_stop (EV_A_ (W)w);
1556 1646
1557 if (!signals [w->signum - 1].head) 1647 if (!signals [w->signum - 1].head)
1558 signal (w->signum, SIG_DFL); 1648 signal (w->signum, SIG_DFL);
1559} 1649}
1560 1650
1561void 1651void
1562ev_child_start (EV_P_ struct ev_child *w) 1652ev_child_start (EV_P_ ev_child *w)
1563{ 1653{
1564#if EV_MULTIPLICITY 1654#if EV_MULTIPLICITY
1565 assert (("child watchers are only supported in the default loop", loop == ev_default_loop_ptr)); 1655 assert (("child watchers are only supported in the default loop", loop == ev_default_loop_ptr));
1566#endif 1656#endif
1567 if (ev_is_active (w)) 1657 if (expect_false (ev_is_active (w)))
1568 return; 1658 return;
1569 1659
1570 ev_start (EV_A_ (W)w, 1); 1660 ev_start (EV_A_ (W)w, 1);
1571 wlist_add ((WL *)&childs [w->pid & (PID_HASHSIZE - 1)], (WL)w); 1661 wlist_add ((WL *)&childs [w->pid & (PID_HASHSIZE - 1)], (WL)w);
1572} 1662}
1573 1663
1574void 1664void
1575ev_child_stop (EV_P_ struct ev_child *w) 1665ev_child_stop (EV_P_ ev_child *w)
1576{ 1666{
1577 ev_clear_pending (EV_A_ (W)w); 1667 ev_clear_pending (EV_A_ (W)w);
1578 if (!ev_is_active (w)) 1668 if (expect_false (!ev_is_active (w)))
1579 return; 1669 return;
1580 1670
1581 wlist_del ((WL *)&childs [w->pid & (PID_HASHSIZE - 1)], (WL)w); 1671 wlist_del ((WL *)&childs [w->pid & (PID_HASHSIZE - 1)], (WL)w);
1582 ev_stop (EV_A_ (W)w); 1672 ev_stop (EV_A_ (W)w);
1583} 1673}
1584 1674
1675#if EV_MULTIPLICITY
1676void
1677ev_embed_sweep (EV_P_ ev_embed *w)
1678{
1679 ev_loop (w->loop, EVLOOP_NONBLOCK);
1680}
1681
1682static void
1683embed_cb (EV_P_ ev_io *io, int revents)
1684{
1685 ev_embed *w = (ev_embed *)(((char *)io) - offsetof (ev_embed, io));
1686
1687 if (ev_cb (w))
1688 ev_feed_event (EV_A_ (W)w, EV_EMBED);
1689 else
1690 ev_embed_sweep (loop, w);
1691}
1692
1693void
1694ev_embed_start (EV_P_ ev_embed *w)
1695{
1696 if (expect_false (ev_is_active (w)))
1697 return;
1698
1699 {
1700 struct ev_loop *loop = w->loop;
1701 assert (("loop to be embedded is not embeddable", backend & ev_embeddable_backends ()));
1702 ev_io_init (&w->io, embed_cb, backend_fd, EV_READ);
1703 }
1704
1705 ev_set_priority (&w->io, ev_priority (w));
1706 ev_io_start (EV_A_ &w->io);
1707 ev_start (EV_A_ (W)w, 1);
1708}
1709
1710void
1711ev_embed_stop (EV_P_ ev_embed *w)
1712{
1713 ev_clear_pending (EV_A_ (W)w);
1714 if (expect_false (!ev_is_active (w)))
1715 return;
1716
1717 ev_io_stop (EV_A_ &w->io);
1718 ev_stop (EV_A_ (W)w);
1719}
1720#endif
1721
1585/*****************************************************************************/ 1722/*****************************************************************************/
1586 1723
1587struct ev_once 1724struct ev_once
1588{ 1725{
1589 struct ev_io io; 1726 ev_io io;
1590 struct ev_timer to; 1727 ev_timer to;
1591 void (*cb)(int revents, void *arg); 1728 void (*cb)(int revents, void *arg);
1592 void *arg; 1729 void *arg;
1593}; 1730};
1594 1731
1595static void 1732static void
… …
1604 1741
1605 cb (revents, arg); 1742 cb (revents, arg);
1606} 1743}
1607 1744
1608static void 1745static void
1609once_cb_io (EV_P_ struct ev_io *w, int revents) 1746once_cb_io (EV_P_ ev_io *w, int revents)
1610{ 1747{
1611 once_cb (EV_A_ (struct ev_once *)(((char *)w) - offsetof (struct ev_once, io)), revents); 1748 once_cb (EV_A_ (struct ev_once *)(((char *)w) - offsetof (struct ev_once, io)), revents);
1612} 1749}
1613 1750
1614static void 1751static void
1615once_cb_to (EV_P_ struct ev_timer *w, int revents) 1752once_cb_to (EV_P_ ev_timer *w, int revents)
1616{ 1753{
1617 once_cb (EV_A_ (struct ev_once *)(((char *)w) - offsetof (struct ev_once, to)), revents); 1754 once_cb (EV_A_ (struct ev_once *)(((char *)w) - offsetof (struct ev_once, to)), revents);
1618} 1755}
1619 1756
1620void 1757void
1621ev_once (EV_P_ int fd, int events, ev_tstamp timeout, void (*cb)(int revents, void *arg), void *arg) 1758ev_once (EV_P_ int fd, int events, ev_tstamp timeout, void (*cb)(int revents, void *arg), void *arg)
1622{ 1759{
1623 struct ev_once *once = (struct ev_once *)ev_malloc (sizeof (struct ev_once)); 1760 struct ev_once *once = (struct ev_once *)ev_malloc (sizeof (struct ev_once));
1624 1761
1625 if (!once) 1762 if (expect_false (!once))
1763 {
1626 cb (EV_ERROR | EV_READ | EV_WRITE | EV_TIMEOUT, arg); 1764 cb (EV_ERROR | EV_READ | EV_WRITE | EV_TIMEOUT, arg);
1627 else 1765 return;
1628 { 1766 }
1767
1629 once->cb = cb; 1768 once->cb = cb;
1630 once->arg = arg; 1769 once->arg = arg;
1631 1770
1632 ev_init (&once->io, once_cb_io); 1771 ev_init (&once->io, once_cb_io);
1633 if (fd >= 0) 1772 if (fd >= 0)
1634 { 1773 {
1635 ev_io_set (&once->io, fd, events); 1774 ev_io_set (&once->io, fd, events);
1636 ev_io_start (EV_A_ &once->io); 1775 ev_io_start (EV_A_ &once->io);
1637 } 1776 }
1638 1777
1639 ev_init (&once->to, once_cb_to); 1778 ev_init (&once->to, once_cb_to);
1640 if (timeout >= 0.) 1779 if (timeout >= 0.)
1641 { 1780 {
1642 ev_timer_set (&once->to, timeout, 0.); 1781 ev_timer_set (&once->to, timeout, 0.);
1643 ev_timer_start (EV_A_ &once->to); 1782 ev_timer_start (EV_A_ &once->to);
1644 }
1645 } 1783 }
1646} 1784}
1647 1785
1648#ifdef __cplusplus 1786#ifdef __cplusplus
1649} 1787}

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