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Comparing libev/ev.c (file contents):
Revision 1.116 by root, Thu Nov 15 09:19:42 2007 UTC vs.
Revision 1.134 by root, Fri Nov 23 19:13:33 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
… …
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 }
401
402 if (expect_false (!w_->cb))
403 return;
369 404
370 w_->pending = ++pendingcnt [ABSPRI (w_)]; 405 w_->pending = ++pendingcnt [ABSPRI (w_)];
371 array_needsize (ANPENDING, pendings [ABSPRI (w_)], pendingmax [ABSPRI (w_)], pendingcnt [ABSPRI (w_)], EMPTY2); 406 array_needsize (ANPENDING, pendings [ABSPRI (w_)], pendingmax [ABSPRI (w_)], pendingcnt [ABSPRI (w_)], EMPTY2);
372 pendings [ABSPRI (w_)][w_->pending - 1].w = w_; 407 pendings [ABSPRI (w_)][w_->pending - 1].w = w_;
373 pendings [ABSPRI (w_)][w_->pending - 1].events = revents; 408 pendings [ABSPRI (w_)][w_->pending - 1].events = revents;
… …
403 fd_event (EV_A_ fd, revents); 438 fd_event (EV_A_ fd, revents);
404} 439}
405 440
406/*****************************************************************************/ 441/*****************************************************************************/
407 442
408static void 443inline void
409fd_reify (EV_P) 444fd_reify (EV_P)
410{ 445{
411 int i; 446 int i;
412 447
413 for (i = 0; i < fdchangecnt; ++i) 448 for (i = 0; i < fdchangecnt; ++i)
… …
430 } 465 }
431#endif 466#endif
432 467
433 anfd->reify = 0; 468 anfd->reify = 0;
434 469
435 method_modify (EV_A_ fd, anfd->events, events); 470 backend_modify (EV_A_ fd, anfd->events, events);
436 anfd->events = events; 471 anfd->events = events;
437 } 472 }
438 473
439 fdchangecnt = 0; 474 fdchangecnt = 0;
440} 475}
441 476
442static void 477static void
443fd_change (EV_P_ int fd) 478fd_change (EV_P_ int fd)
444{ 479{
445 if (anfds [fd].reify) 480 if (expect_false (anfds [fd].reify))
446 return; 481 return;
447 482
448 anfds [fd].reify = 1; 483 anfds [fd].reify = 1;
449 484
450 ++fdchangecnt; 485 ++fdchangecnt;
… …
462 ev_io_stop (EV_A_ w); 497 ev_io_stop (EV_A_ w);
463 ev_feed_event (EV_A_ (W)w, EV_ERROR | EV_READ | EV_WRITE); 498 ev_feed_event (EV_A_ (W)w, EV_ERROR | EV_READ | EV_WRITE);
464 } 499 }
465} 500}
466 501
467static int 502inline int
468fd_valid (int fd) 503fd_valid (int fd)
469{ 504{
470#ifdef _WIN32 505#ifdef _WIN32
471 return _get_osfhandle (fd) != -1; 506 return _get_osfhandle (fd) != -1;
472#else 507#else
… …
498 fd_kill (EV_A_ fd); 533 fd_kill (EV_A_ fd);
499 return; 534 return;
500 } 535 }
501} 536}
502 537
503/* usually called after fork if method needs to re-arm all fds from scratch */ 538/* usually called after fork if backend needs to re-arm all fds from scratch */
504static void 539static void
505fd_rearm_all (EV_P) 540fd_rearm_all (EV_P)
506{ 541{
507 int fd; 542 int fd;
508 543
… …
641 for (signum = signalmax; signum--; ) 676 for (signum = signalmax; signum--; )
642 if (signals [signum].gotsig) 677 if (signals [signum].gotsig)
643 ev_feed_signal_event (EV_A_ signum + 1); 678 ev_feed_signal_event (EV_A_ signum + 1);
644} 679}
645 680
646inline void 681static void
647fd_intern (int fd) 682fd_intern (int fd)
648{ 683{
649#ifdef _WIN32 684#ifdef _WIN32
650 int arg = 1; 685 int arg = 1;
651 ioctlsocket (_get_osfhandle (fd), FIONBIO, &arg); 686 ioctlsocket (_get_osfhandle (fd), FIONBIO, &arg);
… …
699 int pid, status; 734 int pid, status;
700 735
701 if (0 < (pid = waitpid (-1, &status, WNOHANG | WUNTRACED | WCONTINUED))) 736 if (0 < (pid = waitpid (-1, &status, WNOHANG | WUNTRACED | WCONTINUED)))
702 { 737 {
703 /* make sure we are called again until all childs have been reaped */ 738 /* make sure we are called again until all childs have been reaped */
739 /* 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); 740 ev_feed_event (EV_A_ (W)sw, EV_SIGNAL);
705 741
706 child_reap (EV_A_ sw, pid, pid, status); 742 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 */ 743 child_reap (EV_A_ sw, 0, pid, status); /* this might trigger a watcher twice, but feed_event catches that */
708 } 744 }
709} 745}
710 746
711#endif 747#endif
712 748
713/*****************************************************************************/ 749/*****************************************************************************/
714 750
751#if EV_USE_PORT
752# include "ev_port.c"
753#endif
715#if EV_USE_KQUEUE 754#if EV_USE_KQUEUE
716# include "ev_kqueue.c" 755# include "ev_kqueue.c"
717#endif 756#endif
718#if EV_USE_EPOLL 757#if EV_USE_EPOLL
719# include "ev_epoll.c" 758# include "ev_epoll.c"
… …
748 || getgid () != getegid (); 787 || getgid () != getegid ();
749#endif 788#endif
750} 789}
751 790
752unsigned int 791unsigned int
753ev_method (EV_P) 792ev_supported_backends (void)
754{ 793{
755 return method; 794 unsigned int flags = 0;
795
796 if (EV_USE_PORT ) flags |= EVBACKEND_PORT;
797 if (EV_USE_KQUEUE) flags |= EVBACKEND_KQUEUE;
798 if (EV_USE_EPOLL ) flags |= EVBACKEND_EPOLL;
799 if (EV_USE_POLL ) flags |= EVBACKEND_POLL;
800 if (EV_USE_SELECT) flags |= EVBACKEND_SELECT;
801
802 return flags;
803}
804
805unsigned int
806ev_recommended_backends (void)
807{
808 unsigned int flags = ev_supported_backends ();
809
810#ifndef __NetBSD__
811 /* kqueue is borked on everything but netbsd apparently */
812 /* it usually doesn't work correctly on anything but sockets and pipes */
813 flags &= ~EVBACKEND_KQUEUE;
814#endif
815#ifdef __APPLE__
816 // flags &= ~EVBACKEND_KQUEUE; for documentation
817 flags &= ~EVBACKEND_POLL;
818#endif
819
820 return flags;
821}
822
823unsigned int
824ev_embeddable_backends (void)
825{
826 return EVBACKEND_EPOLL
827 | EVBACKEND_KQUEUE
828 | EVBACKEND_PORT;
829}
830
831unsigned int
832ev_backend (EV_P)
833{
834 return backend;
756} 835}
757 836
758static void 837static void
759loop_init (EV_P_ unsigned int flags) 838loop_init (EV_P_ unsigned int flags)
760{ 839{
761 if (!method) 840 if (!backend)
762 { 841 {
763#if EV_USE_MONOTONIC 842#if EV_USE_MONOTONIC
764 { 843 {
765 struct timespec ts; 844 struct timespec ts;
766 if (!clock_gettime (CLOCK_MONOTONIC, &ts)) 845 if (!clock_gettime (CLOCK_MONOTONIC, &ts))
… …
771 ev_rt_now = ev_time (); 850 ev_rt_now = ev_time ();
772 mn_now = get_clock (); 851 mn_now = get_clock ();
773 now_floor = mn_now; 852 now_floor = mn_now;
774 rtmn_diff = ev_rt_now - mn_now; 853 rtmn_diff = ev_rt_now - mn_now;
775 854
776 if (!(flags & EVFLAG_NOENV) && !enable_secure () && getenv ("LIBEV_FLAGS")) 855 if (!(flags & EVFLAG_NOENV)
856 && !enable_secure ()
857 && getenv ("LIBEV_FLAGS"))
777 flags = atoi (getenv ("LIBEV_FLAGS")); 858 flags = atoi (getenv ("LIBEV_FLAGS"));
778 859
779 if (!(flags & 0x0000ffff)) 860 if (!(flags & 0x0000ffffUL))
780 flags |= 0x0000ffff; 861 flags |= ev_recommended_backends ();
781 862
782 method = 0; 863 backend = 0;
864#if EV_USE_PORT
865 if (!backend && (flags & EVBACKEND_PORT )) backend = port_init (EV_A_ flags);
866#endif
783#if EV_USE_KQUEUE 867#if EV_USE_KQUEUE
784 if (!method && (flags & EVMETHOD_KQUEUE)) method = kqueue_init (EV_A_ flags); 868 if (!backend && (flags & EVBACKEND_KQUEUE)) backend = kqueue_init (EV_A_ flags);
785#endif 869#endif
786#if EV_USE_EPOLL 870#if EV_USE_EPOLL
787 if (!method && (flags & EVMETHOD_EPOLL )) method = epoll_init (EV_A_ flags); 871 if (!backend && (flags & EVBACKEND_EPOLL )) backend = epoll_init (EV_A_ flags);
788#endif 872#endif
789#if EV_USE_POLL 873#if EV_USE_POLL
790 if (!method && (flags & EVMETHOD_POLL )) method = poll_init (EV_A_ flags); 874 if (!backend && (flags & EVBACKEND_POLL )) backend = poll_init (EV_A_ flags);
791#endif 875#endif
792#if EV_USE_SELECT 876#if EV_USE_SELECT
793 if (!method && (flags & EVMETHOD_SELECT)) method = select_init (EV_A_ flags); 877 if (!backend && (flags & EVBACKEND_SELECT)) backend = select_init (EV_A_ flags);
794#endif 878#endif
795 879
796 ev_init (&sigev, sigcb); 880 ev_init (&sigev, sigcb);
797 ev_set_priority (&sigev, EV_MAXPRI); 881 ev_set_priority (&sigev, EV_MAXPRI);
798 } 882 }
799} 883}
800 884
801void 885static void
802loop_destroy (EV_P) 886loop_destroy (EV_P)
803{ 887{
804 int i; 888 int i;
805 889
890#if EV_USE_PORT
891 if (backend == EVBACKEND_PORT ) port_destroy (EV_A);
892#endif
806#if EV_USE_KQUEUE 893#if EV_USE_KQUEUE
807 if (method == EVMETHOD_KQUEUE) kqueue_destroy (EV_A); 894 if (backend == EVBACKEND_KQUEUE) kqueue_destroy (EV_A);
808#endif 895#endif
809#if EV_USE_EPOLL 896#if EV_USE_EPOLL
810 if (method == EVMETHOD_EPOLL ) epoll_destroy (EV_A); 897 if (backend == EVBACKEND_EPOLL ) epoll_destroy (EV_A);
811#endif 898#endif
812#if EV_USE_POLL 899#if EV_USE_POLL
813 if (method == EVMETHOD_POLL ) poll_destroy (EV_A); 900 if (backend == EVBACKEND_POLL ) poll_destroy (EV_A);
814#endif 901#endif
815#if EV_USE_SELECT 902#if EV_USE_SELECT
816 if (method == EVMETHOD_SELECT) select_destroy (EV_A); 903 if (backend == EVBACKEND_SELECT) select_destroy (EV_A);
817#endif 904#endif
818 905
819 for (i = NUMPRI; i--; ) 906 for (i = NUMPRI; i--; )
820 array_free (pending, [i]); 907 array_free (pending, [i]);
821 908
… …
827#endif 914#endif
828 array_free (idle, EMPTY0); 915 array_free (idle, EMPTY0);
829 array_free (prepare, EMPTY0); 916 array_free (prepare, EMPTY0);
830 array_free (check, EMPTY0); 917 array_free (check, EMPTY0);
831 918
832 method = 0; 919 backend = 0;
833} 920}
834 921
835static void 922static void
836loop_fork (EV_P) 923loop_fork (EV_P)
837{ 924{
925#if EV_USE_PORT
926 if (backend == EVBACKEND_PORT ) port_fork (EV_A);
927#endif
928#if EV_USE_KQUEUE
929 if (backend == EVBACKEND_KQUEUE) kqueue_fork (EV_A);
930#endif
838#if EV_USE_EPOLL 931#if EV_USE_EPOLL
839 if (method == EVMETHOD_EPOLL ) epoll_fork (EV_A); 932 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 933#endif
844 934
845 if (ev_is_active (&sigev)) 935 if (ev_is_active (&sigev))
846 { 936 {
847 /* default loop */ 937 /* default loop */
… …
868 958
869 memset (loop, 0, sizeof (struct ev_loop)); 959 memset (loop, 0, sizeof (struct ev_loop));
870 960
871 loop_init (EV_A_ flags); 961 loop_init (EV_A_ flags);
872 962
873 if (ev_method (EV_A)) 963 if (ev_backend (EV_A))
874 return loop; 964 return loop;
875 965
876 return 0; 966 return 0;
877} 967}
878 968
… …
891 981
892#endif 982#endif
893 983
894#if EV_MULTIPLICITY 984#if EV_MULTIPLICITY
895struct ev_loop * 985struct ev_loop *
896ev_default_loop_ (unsigned int flags) 986ev_default_loop_init (unsigned int flags)
897#else 987#else
898int 988int
899ev_default_loop (unsigned int flags) 989ev_default_loop (unsigned int flags)
900#endif 990#endif
901{ 991{
… …
906 if (!ev_default_loop_ptr) 996 if (!ev_default_loop_ptr)
907 { 997 {
908#if EV_MULTIPLICITY 998#if EV_MULTIPLICITY
909 struct ev_loop *loop = ev_default_loop_ptr = &default_loop_struct; 999 struct ev_loop *loop = ev_default_loop_ptr = &default_loop_struct;
910#else 1000#else
911 ev_default_default_loop_ptr = 1; 1001 ev_default_loop_ptr = 1;
912#endif 1002#endif
913 1003
914 loop_init (EV_A_ flags); 1004 loop_init (EV_A_ flags);
915 1005
916 if (ev_method (EV_A)) 1006 if (ev_backend (EV_A))
917 { 1007 {
918 siginit (EV_A); 1008 siginit (EV_A);
919 1009
920#ifndef _WIN32 1010#ifndef _WIN32
921 ev_signal_init (&childev, childcb, SIGCHLD); 1011 ev_signal_init (&childev, childcb, SIGCHLD);
… …
957{ 1047{
958#if EV_MULTIPLICITY 1048#if EV_MULTIPLICITY
959 struct ev_loop *loop = ev_default_loop_ptr; 1049 struct ev_loop *loop = ev_default_loop_ptr;
960#endif 1050#endif
961 1051
962 if (method) 1052 if (backend)
963 postfork = 1; 1053 postfork = 1;
964} 1054}
965 1055
966/*****************************************************************************/ 1056/*****************************************************************************/
967 1057
… …
975 return 1; 1065 return 1;
976 1066
977 return 0; 1067 return 0;
978} 1068}
979 1069
980static void 1070inline void
981call_pending (EV_P) 1071call_pending (EV_P)
982{ 1072{
983 int pri; 1073 int pri;
984 1074
985 for (pri = NUMPRI; pri--; ) 1075 for (pri = NUMPRI; pri--; )
986 while (pendingcnt [pri]) 1076 while (pendingcnt [pri])
987 { 1077 {
988 ANPENDING *p = pendings [pri] + --pendingcnt [pri]; 1078 ANPENDING *p = pendings [pri] + --pendingcnt [pri];
989 1079
990 if (p->w) 1080 if (expect_true (p->w))
991 { 1081 {
992 p->w->pending = 0; 1082 p->w->pending = 0;
993 EV_CB_INVOKE (p->w, p->events); 1083 EV_CB_INVOKE (p->w, p->events);
994 } 1084 }
995 } 1085 }
996} 1086}
997 1087
998static void 1088inline void
999timers_reify (EV_P) 1089timers_reify (EV_P)
1000{ 1090{
1001 while (timercnt && ((WT)timers [0])->at <= mn_now) 1091 while (timercnt && ((WT)timers [0])->at <= mn_now)
1002 { 1092 {
1003 struct ev_timer *w = timers [0]; 1093 struct ev_timer *w = timers [0];
… …
1021 ev_feed_event (EV_A_ (W)w, EV_TIMEOUT); 1111 ev_feed_event (EV_A_ (W)w, EV_TIMEOUT);
1022 } 1112 }
1023} 1113}
1024 1114
1025#if EV_PERIODICS 1115#if EV_PERIODICS
1026static void 1116inline void
1027periodics_reify (EV_P) 1117periodics_reify (EV_P)
1028{ 1118{
1029 while (periodiccnt && ((WT)periodics [0])->at <= ev_rt_now) 1119 while (periodiccnt && ((WT)periodics [0])->at <= ev_rt_now)
1030 { 1120 {
1031 struct ev_periodic *w = periodics [0]; 1121 struct ev_periodic *w = periodics [0];
… …
1090 ev_rt_now = ev_time (); 1180 ev_rt_now = ev_time ();
1091 return 1; 1181 return 1;
1092 } 1182 }
1093} 1183}
1094 1184
1095static void 1185inline void
1096time_update (EV_P) 1186time_update (EV_P)
1097{ 1187{
1098 int i; 1188 int i;
1099 1189
1100#if EV_USE_MONOTONIC 1190#if EV_USE_MONOTONIC
… …
1199 { 1289 {
1200 block = MAX_BLOCKTIME; 1290 block = MAX_BLOCKTIME;
1201 1291
1202 if (timercnt) 1292 if (timercnt)
1203 { 1293 {
1204 ev_tstamp to = ((WT)timers [0])->at - mn_now + method_fudge; 1294 ev_tstamp to = ((WT)timers [0])->at - mn_now + backend_fudge;
1205 if (block > to) block = to; 1295 if (block > to) block = to;
1206 } 1296 }
1207 1297
1208#if EV_PERIODICS 1298#if EV_PERIODICS
1209 if (periodiccnt) 1299 if (periodiccnt)
1210 { 1300 {
1211 ev_tstamp to = ((WT)periodics [0])->at - ev_rt_now + method_fudge; 1301 ev_tstamp to = ((WT)periodics [0])->at - ev_rt_now + backend_fudge;
1212 if (block > to) block = to; 1302 if (block > to) block = to;
1213 } 1303 }
1214#endif 1304#endif
1215 1305
1216 if (block < 0.) block = 0.; 1306 if (expect_false (block < 0.)) block = 0.;
1217 } 1307 }
1218 1308
1219 method_poll (EV_A_ block); 1309 backend_poll (EV_A_ block);
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 */
… …
1230 /* queue idle watchers unless io or timers are pending */ 1320 /* queue idle watchers unless io or timers 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 != 2)
1245 loop_done = 0; 1335 loop_done = 0;
… …
1307void 1397void
1308ev_io_start (EV_P_ struct ev_io *w) 1398ev_io_start (EV_P_ struct 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);
… …
1323 1413
1324void 1414void
1325ev_io_stop (EV_P_ struct ev_io *w) 1415ev_io_stop (EV_P_ struct 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);
… …
1337} 1427}
1338 1428
1339void 1429void
1340ev_timer_start (EV_P_ struct ev_timer *w) 1430ev_timer_start (EV_P_ struct 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.));
… …
1356 1446
1357void 1447void
1358ev_timer_stop (EV_P_ struct ev_timer *w) 1448ev_timer_stop (EV_P_ struct 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
… …
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_ struct 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)
… …
1420 1510
1421void 1511void
1422ev_periodic_stop (EV_P_ struct ev_periodic *w) 1512ev_periodic_stop (EV_P_ struct 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
… …
1446#endif 1536#endif
1447 1537
1448void 1538void
1449ev_idle_start (EV_P_ struct ev_idle *w) 1539ev_idle_start (EV_P_ struct 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 (struct ev_idle *, idles, idlemax, idlecnt, EMPTY2);
1456 idles [idlecnt - 1] = w; 1546 idles [idlecnt - 1] = w;
… …
1458 1548
1459void 1549void
1460ev_idle_stop (EV_P_ struct ev_idle *w) 1550ev_idle_stop (EV_P_ struct 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_ struct 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 (struct ev_prepare *, prepares, preparemax, preparecnt, EMPTY2);
1478 prepares [preparecnt - 1] = w; 1568 prepares [preparecnt - 1] = w;
… …
1480 1570
1481void 1571void
1482ev_prepare_stop (EV_P_ struct ev_prepare *w) 1572ev_prepare_stop (EV_P_ struct 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_ struct 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 (struct ev_check *, checks, checkmax, checkcnt, EMPTY2);
1500 checks [checkcnt - 1] = w; 1590 checks [checkcnt - 1] = w;
… …
1502 1592
1503void 1593void
1504ev_check_stop (EV_P_ struct ev_check *w) 1594ev_check_stop (EV_P_ struct 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}
… …
1519ev_signal_start (EV_P_ struct ev_signal *w) 1609ev_signal_start (EV_P_ struct 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);
… …
1546 1636
1547void 1637void
1548ev_signal_stop (EV_P_ struct ev_signal *w) 1638ev_signal_stop (EV_P_ struct 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
… …
1562ev_child_start (EV_P_ struct ev_child *w) 1652ev_child_start (EV_P_ struct 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_ struct 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}
1674
1675#if EV_MULTIPLICITY
1676static void
1677embed_cb (EV_P_ struct ev_io *io, int revents)
1678{
1679 struct ev_embed *w = (struct ev_embed *)(((char *)io) - offsetof (struct ev_embed, io));
1680
1681 ev_feed_event (EV_A_ (W)w, EV_EMBED);
1682 ev_loop (w->loop, EVLOOP_NONBLOCK);
1683}
1684
1685void
1686ev_embed_start (EV_P_ struct ev_embed *w)
1687{
1688 if (expect_false (ev_is_active (w)))
1689 return;
1690
1691 {
1692 struct ev_loop *loop = w->loop;
1693 assert (("loop to be embedded is not embeddable", backend & ev_embeddable_backends ()));
1694 ev_io_init (&w->io, embed_cb, backend_fd, EV_READ);
1695 }
1696
1697 ev_io_start (EV_A_ &w->io);
1698 ev_start (EV_A_ (W)w, 1);
1699}
1700
1701void
1702ev_embed_stop (EV_P_ struct ev_embed *w)
1703{
1704 ev_clear_pending (EV_A_ (W)w);
1705 if (expect_false (!ev_is_active (w)))
1706 return;
1707
1708 ev_io_stop (EV_A_ &w->io);
1709 ev_stop (EV_A_ (W)w);
1710}
1711#endif
1584 1712
1585/*****************************************************************************/ 1713/*****************************************************************************/
1586 1714
1587struct ev_once 1715struct ev_once
1588{ 1716{
… …
1620void 1748void
1621ev_once (EV_P_ int fd, int events, ev_tstamp timeout, void (*cb)(int revents, void *arg), void *arg) 1749ev_once (EV_P_ int fd, int events, ev_tstamp timeout, void (*cb)(int revents, void *arg), void *arg)
1622{ 1750{
1623 struct ev_once *once = (struct ev_once *)ev_malloc (sizeof (struct ev_once)); 1751 struct ev_once *once = (struct ev_once *)ev_malloc (sizeof (struct ev_once));
1624 1752
1625 if (!once) 1753 if (expect_false (!once))
1754 {
1626 cb (EV_ERROR | EV_READ | EV_WRITE | EV_TIMEOUT, arg); 1755 cb (EV_ERROR | EV_READ | EV_WRITE | EV_TIMEOUT, arg);
1627 else 1756 return;
1628 { 1757 }
1758
1629 once->cb = cb; 1759 once->cb = cb;
1630 once->arg = arg; 1760 once->arg = arg;
1631 1761
1632 ev_init (&once->io, once_cb_io); 1762 ev_init (&once->io, once_cb_io);
1633 if (fd >= 0) 1763 if (fd >= 0)
1634 { 1764 {
1635 ev_io_set (&once->io, fd, events); 1765 ev_io_set (&once->io, fd, events);
1636 ev_io_start (EV_A_ &once->io); 1766 ev_io_start (EV_A_ &once->io);
1637 } 1767 }
1638 1768
1639 ev_init (&once->to, once_cb_to); 1769 ev_init (&once->to, once_cb_to);
1640 if (timeout >= 0.) 1770 if (timeout >= 0.)
1641 { 1771 {
1642 ev_timer_set (&once->to, timeout, 0.); 1772 ev_timer_set (&once->to, timeout, 0.);
1643 ev_timer_start (EV_A_ &once->to); 1773 ev_timer_start (EV_A_ &once->to);
1644 }
1645 } 1774 }
1646} 1775}
1647 1776
1648#ifdef __cplusplus 1777#ifdef __cplusplus
1649} 1778}

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