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Comparing libev/ev.c (file contents):
Revision 1.123 by root, Sat Nov 17 02:23:54 2007 UTC vs.
Revision 1.130 by root, Fri Nov 23 05:13:48 2007 UTC

… …
41# define EV_USE_MONOTONIC 1 41# define EV_USE_MONOTONIC 1
42# endif 42# endif
43# ifndef EV_USE_REALTIME 43# ifndef EV_USE_REALTIME
44# define EV_USE_REALTIME 1 44# define EV_USE_REALTIME 1
45# endif 45# endif
46# else
47# ifndef EV_USE_MONOTONIC
48# define EV_USE_MONOTONIC 0
49# endif
50# ifndef EV_USE_REALTIME
51# define EV_USE_REALTIME 0
52# endif
46# endif 53# endif
47 54
48# if HAVE_SELECT && HAVE_SYS_SELECT_H && !defined (EV_USE_SELECT) 55# ifndef EV_USE_SELECT
56# if HAVE_SELECT && HAVE_SYS_SELECT_H
49# define EV_USE_SELECT 1 57# define EV_USE_SELECT 1
58# else
59# define EV_USE_SELECT 0
60# endif
50# endif 61# endif
51 62
52# if HAVE_POLL && HAVE_POLL_H && !defined (EV_USE_POLL) 63# ifndef EV_USE_POLL
64# if HAVE_POLL && HAVE_POLL_H
53# define EV_USE_POLL 1 65# define EV_USE_POLL 1
66# else
67# define EV_USE_POLL 0
68# endif
54# endif 69# endif
55 70
56# if HAVE_EPOLL_CTL && HAVE_SYS_EPOLL_H && !defined (EV_USE_EPOLL) 71# ifndef EV_USE_EPOLL
72# if HAVE_EPOLL_CTL && HAVE_SYS_EPOLL_H
57# define EV_USE_EPOLL 1 73# define EV_USE_EPOLL 1
74# else
75# define EV_USE_EPOLL 0
76# endif
58# endif 77# endif
59 78
79# ifndef EV_USE_KQUEUE
60# if HAVE_KQUEUE && HAVE_SYS_EVENT_H && HAVE_SYS_QUEUE_H && !defined (EV_USE_KQUEUE) 80# if HAVE_KQUEUE && HAVE_SYS_EVENT_H && HAVE_SYS_QUEUE_H
61# define EV_USE_KQUEUE 1 81# define EV_USE_KQUEUE 1
82# else
83# define EV_USE_KQUEUE 0
84# endif
62# endif 85# endif
63 86
64# if HAVE_PORT_H && HAVE_PORT_CREATE && !defined (EV_USE_PORT) 87# ifndef EV_USE_PORT
88# if HAVE_PORT_H && HAVE_PORT_CREATE
65# define EV_USE_PORT 1 89# define EV_USE_PORT 1
90# else
91# define EV_USE_PORT 0
92# endif
66# endif 93# endif
67 94
68#endif 95#endif
69 96
70#include <math.h> 97#include <math.h>
… …
126#ifndef EV_USE_PORT 153#ifndef EV_USE_PORT
127# define EV_USE_PORT 0 154# define EV_USE_PORT 0
128#endif 155#endif
129 156
130/**/ 157/**/
131
132/* darwin simply cannot be helped */
133#ifdef __APPLE__
134# undef EV_USE_POLL
135# undef EV_USE_KQUEUE
136#endif
137 158
138#ifndef CLOCK_MONOTONIC 159#ifndef CLOCK_MONOTONIC
139# undef EV_USE_MONOTONIC 160# undef EV_USE_MONOTONIC
140# define EV_USE_MONOTONIC 0 161# define EV_USE_MONOTONIC 0
141#endif 162#endif
… …
437 } 458 }
438#endif 459#endif
439 460
440 anfd->reify = 0; 461 anfd->reify = 0;
441 462
442 method_modify (EV_A_ fd, anfd->events, events); 463 backend_modify (EV_A_ fd, anfd->events, events);
443 anfd->events = events; 464 anfd->events = events;
444 } 465 }
445 466
446 fdchangecnt = 0; 467 fdchangecnt = 0;
447} 468}
… …
505 fd_kill (EV_A_ fd); 526 fd_kill (EV_A_ fd);
506 return; 527 return;
507 } 528 }
508} 529}
509 530
510/* usually called after fork if method needs to re-arm all fds from scratch */ 531/* usually called after fork if backend needs to re-arm all fds from scratch */
511static void 532static void
512fd_rearm_all (EV_P) 533fd_rearm_all (EV_P)
513{ 534{
514 int fd; 535 int fd;
515 536
… …
758 || getgid () != getegid (); 779 || getgid () != getegid ();
759#endif 780#endif
760} 781}
761 782
762unsigned int 783unsigned int
763ev_method (EV_P) 784ev_supported_backends (void)
764{ 785{
765 return method; 786 unsigned int flags = 0;
787
788 if (EV_USE_PORT ) flags |= EVBACKEND_PORT;
789 if (EV_USE_KQUEUE) flags |= EVBACKEND_KQUEUE;
790 if (EV_USE_EPOLL ) flags |= EVBACKEND_EPOLL;
791 if (EV_USE_POLL ) flags |= EVBACKEND_POLL;
792 if (EV_USE_SELECT) flags |= EVBACKEND_SELECT;
793
794 return flags;
795}
796
797unsigned int
798ev_recommended_backends (void)
799{
800 unsigned int flags = ev_recommended_backends ();
801
802#ifndef __NetBSD__
803 /* kqueue is borked on everything but netbsd apparently */
804 /* it usually doesn't work correctly on anything but sockets and pipes */
805 flags &= ~EVBACKEND_KQUEUE;
806#endif
807#ifdef __APPLE__
808 // flags &= ~EVBACKEND_KQUEUE; for documentation
809 flags &= ~EVBACKEND_POLL;
810#endif
811
812 return flags;
813}
814
815unsigned int
816ev_backend (EV_P)
817{
818 return backend;
766} 819}
767 820
768static void 821static void
769loop_init (EV_P_ unsigned int flags) 822loop_init (EV_P_ unsigned int flags)
770{ 823{
771 if (!method) 824 if (!backend)
772 { 825 {
773#if EV_USE_MONOTONIC 826#if EV_USE_MONOTONIC
774 { 827 {
775 struct timespec ts; 828 struct timespec ts;
776 if (!clock_gettime (CLOCK_MONOTONIC, &ts)) 829 if (!clock_gettime (CLOCK_MONOTONIC, &ts))
… …
781 ev_rt_now = ev_time (); 834 ev_rt_now = ev_time ();
782 mn_now = get_clock (); 835 mn_now = get_clock ();
783 now_floor = mn_now; 836 now_floor = mn_now;
784 rtmn_diff = ev_rt_now - mn_now; 837 rtmn_diff = ev_rt_now - mn_now;
785 838
786 if (!(flags & EVFLAG_NOENV) && !enable_secure () && getenv ("LIBEV_FLAGS")) 839 if (!(flags & EVFLAG_NOENV)
840 && !enable_secure ()
841 && getenv ("LIBEV_FLAGS"))
787 flags = atoi (getenv ("LIBEV_FLAGS")); 842 flags = atoi (getenv ("LIBEV_FLAGS"));
788 843
789 if (!(flags & 0x0000ffff)) 844 if (!(flags & 0x0000ffffUL))
790 flags |= 0x0000ffff; 845 flags |= ev_recommended_backends ();
791 846
792 method = 0; 847 backend = 0;
793#if EV_USE_PORT 848#if EV_USE_PORT
794 if (!method && (flags & EVMETHOD_PORT )) method = port_init (EV_A_ flags); 849 if (!backend && (flags & EVBACKEND_PORT )) backend = port_init (EV_A_ flags);
795#endif 850#endif
796#if EV_USE_KQUEUE 851#if EV_USE_KQUEUE
797 if (!method && (flags & EVMETHOD_KQUEUE)) method = kqueue_init (EV_A_ flags); 852 if (!backend && (flags & EVBACKEND_KQUEUE)) backend = kqueue_init (EV_A_ flags);
798#endif 853#endif
799#if EV_USE_EPOLL 854#if EV_USE_EPOLL
800 if (!method && (flags & EVMETHOD_EPOLL )) method = epoll_init (EV_A_ flags); 855 if (!backend && (flags & EVBACKEND_EPOLL )) backend = epoll_init (EV_A_ flags);
801#endif 856#endif
802#if EV_USE_POLL 857#if EV_USE_POLL
803 if (!method && (flags & EVMETHOD_POLL )) method = poll_init (EV_A_ flags); 858 if (!backend && (flags & EVBACKEND_POLL )) backend = poll_init (EV_A_ flags);
804#endif 859#endif
805#if EV_USE_SELECT 860#if EV_USE_SELECT
806 if (!method && (flags & EVMETHOD_SELECT)) method = select_init (EV_A_ flags); 861 if (!backend && (flags & EVBACKEND_SELECT)) backend = select_init (EV_A_ flags);
807#endif 862#endif
808 863
809 ev_init (&sigev, sigcb); 864 ev_init (&sigev, sigcb);
810 ev_set_priority (&sigev, EV_MAXPRI); 865 ev_set_priority (&sigev, EV_MAXPRI);
811 } 866 }
812} 867}
813 868
814void 869static void
815loop_destroy (EV_P) 870loop_destroy (EV_P)
816{ 871{
817 int i; 872 int i;
818 873
819#if EV_USE_PORT 874#if EV_USE_PORT
820 if (method == EVMETHOD_PORT ) port_destroy (EV_A); 875 if (backend == EVBACKEND_PORT ) port_destroy (EV_A);
821#endif 876#endif
822#if EV_USE_KQUEUE 877#if EV_USE_KQUEUE
823 if (method == EVMETHOD_KQUEUE) kqueue_destroy (EV_A); 878 if (backend == EVBACKEND_KQUEUE) kqueue_destroy (EV_A);
824#endif 879#endif
825#if EV_USE_EPOLL 880#if EV_USE_EPOLL
826 if (method == EVMETHOD_EPOLL ) epoll_destroy (EV_A); 881 if (backend == EVBACKEND_EPOLL ) epoll_destroy (EV_A);
827#endif 882#endif
828#if EV_USE_POLL 883#if EV_USE_POLL
829 if (method == EVMETHOD_POLL ) poll_destroy (EV_A); 884 if (backend == EVBACKEND_POLL ) poll_destroy (EV_A);
830#endif 885#endif
831#if EV_USE_SELECT 886#if EV_USE_SELECT
832 if (method == EVMETHOD_SELECT) select_destroy (EV_A); 887 if (backend == EVBACKEND_SELECT) select_destroy (EV_A);
833#endif 888#endif
834 889
835 for (i = NUMPRI; i--; ) 890 for (i = NUMPRI; i--; )
836 array_free (pending, [i]); 891 array_free (pending, [i]);
837 892
… …
843#endif 898#endif
844 array_free (idle, EMPTY0); 899 array_free (idle, EMPTY0);
845 array_free (prepare, EMPTY0); 900 array_free (prepare, EMPTY0);
846 array_free (check, EMPTY0); 901 array_free (check, EMPTY0);
847 902
848 method = 0; 903 backend = 0;
849} 904}
850 905
851static void 906static void
852loop_fork (EV_P) 907loop_fork (EV_P)
853{ 908{
854#if EV_USE_PORT 909#if EV_USE_PORT
855 if (method == EVMETHOD_PORT ) port_fork (EV_A); 910 if (backend == EVBACKEND_PORT ) port_fork (EV_A);
856#endif 911#endif
857#if EV_USE_KQUEUE 912#if EV_USE_KQUEUE
858 if (method == EVMETHOD_KQUEUE) kqueue_fork (EV_A); 913 if (backend == EVBACKEND_KQUEUE) kqueue_fork (EV_A);
859#endif 914#endif
860#if EV_USE_EPOLL 915#if EV_USE_EPOLL
861 if (method == EVMETHOD_EPOLL ) epoll_fork (EV_A); 916 if (backend == EVBACKEND_EPOLL ) epoll_fork (EV_A);
862#endif 917#endif
863 918
864 if (ev_is_active (&sigev)) 919 if (ev_is_active (&sigev))
865 { 920 {
866 /* default loop */ 921 /* default loop */
… …
887 942
888 memset (loop, 0, sizeof (struct ev_loop)); 943 memset (loop, 0, sizeof (struct ev_loop));
889 944
890 loop_init (EV_A_ flags); 945 loop_init (EV_A_ flags);
891 946
892 if (ev_method (EV_A)) 947 if (ev_backend (EV_A))
893 return loop; 948 return loop;
894 949
895 return 0; 950 return 0;
896} 951}
897 952
… …
910 965
911#endif 966#endif
912 967
913#if EV_MULTIPLICITY 968#if EV_MULTIPLICITY
914struct ev_loop * 969struct ev_loop *
915ev_default_loop_ (unsigned int flags) 970ev_default_loop_init (unsigned int flags)
916#else 971#else
917int 972int
918ev_default_loop (unsigned int flags) 973ev_default_loop (unsigned int flags)
919#endif 974#endif
920{ 975{
… …
930 ev_default_loop_ptr = 1; 985 ev_default_loop_ptr = 1;
931#endif 986#endif
932 987
933 loop_init (EV_A_ flags); 988 loop_init (EV_A_ flags);
934 989
935 if (ev_method (EV_A)) 990 if (ev_backend (EV_A))
936 { 991 {
937 siginit (EV_A); 992 siginit (EV_A);
938 993
939#ifndef _WIN32 994#ifndef _WIN32
940 ev_signal_init (&childev, childcb, SIGCHLD); 995 ev_signal_init (&childev, childcb, SIGCHLD);
… …
976{ 1031{
977#if EV_MULTIPLICITY 1032#if EV_MULTIPLICITY
978 struct ev_loop *loop = ev_default_loop_ptr; 1033 struct ev_loop *loop = ev_default_loop_ptr;
979#endif 1034#endif
980 1035
981 if (method) 1036 if (backend)
982 postfork = 1; 1037 postfork = 1;
983} 1038}
984 1039
985/*****************************************************************************/ 1040/*****************************************************************************/
986 1041
… …
1218 { 1273 {
1219 block = MAX_BLOCKTIME; 1274 block = MAX_BLOCKTIME;
1220 1275
1221 if (timercnt) 1276 if (timercnt)
1222 { 1277 {
1223 ev_tstamp to = ((WT)timers [0])->at - mn_now + method_fudge; 1278 ev_tstamp to = ((WT)timers [0])->at - mn_now + backend_fudge;
1224 if (block > to) block = to; 1279 if (block > to) block = to;
1225 } 1280 }
1226 1281
1227#if EV_PERIODICS 1282#if EV_PERIODICS
1228 if (periodiccnt) 1283 if (periodiccnt)
1229 { 1284 {
1230 ev_tstamp to = ((WT)periodics [0])->at - ev_rt_now + method_fudge; 1285 ev_tstamp to = ((WT)periodics [0])->at - ev_rt_now + backend_fudge;
1231 if (block > to) block = to; 1286 if (block > to) block = to;
1232 } 1287 }
1233#endif 1288#endif
1234 1289
1235 if (expect_false (block < 0.)) block = 0.; 1290 if (expect_false (block < 0.)) block = 0.;
1236 } 1291 }
1237 1292
1238 method_poll (EV_A_ block); 1293 backend_poll (EV_A_ block);
1239 1294
1240 /* update ev_rt_now, do magic */ 1295 /* update ev_rt_now, do magic */
1241 time_update (EV_A); 1296 time_update (EV_A);
1242 1297
1243 /* queue pending timers and reschedule them */ 1298 /* queue pending timers and reschedule them */

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