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Comparing libev/ev.c (file contents):
Revision 1.126 by root, Sun Nov 18 01:25:23 2007 UTC vs.
Revision 1.133 by root, Fri Nov 23 11:32:22 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
… …
50# ifndef EV_USE_REALTIME 54# ifndef EV_USE_REALTIME
51# define EV_USE_REALTIME 0 55# define EV_USE_REALTIME 0
52# endif 56# endif
53# endif 57# endif
54 58
55# if HAVE_SELECT && HAVE_SYS_SELECT_H && !defined (EV_USE_SELECT) 59# ifndef EV_USE_SELECT
60# if HAVE_SELECT && HAVE_SYS_SELECT_H
56# define EV_USE_SELECT 1 61# define EV_USE_SELECT 1
57# else 62# else
58# define EV_USE_SELECT 0 63# define EV_USE_SELECT 0
64# endif
59# endif 65# endif
60 66
61# if HAVE_POLL && HAVE_POLL_H && !defined (EV_USE_POLL) 67# ifndef EV_USE_POLL
68# if HAVE_POLL && HAVE_POLL_H
62# define EV_USE_POLL 1 69# define EV_USE_POLL 1
63# else 70# else
64# define EV_USE_POLL 0 71# define EV_USE_POLL 0
72# endif
65# endif 73# endif
66 74
67# 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
68# define EV_USE_EPOLL 1 77# define EV_USE_EPOLL 1
69# else 78# else
70# define EV_USE_EPOLL 0 79# define EV_USE_EPOLL 0
80# endif
71# endif 81# endif
72 82
83# ifndef EV_USE_KQUEUE
73# 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
74# define EV_USE_KQUEUE 1 85# define EV_USE_KQUEUE 1
75# else 86# else
76# define EV_USE_KQUEUE 0 87# define EV_USE_KQUEUE 0
88# endif
77# endif 89# endif
78 90
79# if HAVE_PORT_H && HAVE_PORT_CREATE && !defined (EV_USE_PORT) 91# ifndef EV_USE_PORT
92# if HAVE_PORT_H && HAVE_PORT_CREATE
80# define EV_USE_PORT 1 93# define EV_USE_PORT 1
81# else 94# else
82# define EV_USE_PORT 0 95# define EV_USE_PORT 0
96# endif
83# endif 97# endif
84 98
85#endif 99#endif
86 100
87#include <math.h> 101#include <math.h>
… …
143#ifndef EV_USE_PORT 157#ifndef EV_USE_PORT
144# define EV_USE_PORT 0 158# define EV_USE_PORT 0
145#endif 159#endif
146 160
147/**/ 161/**/
148
149/* darwin simply cannot be helped */
150#ifdef __APPLE__
151# undef EV_USE_POLL
152# undef EV_USE_KQUEUE
153#endif
154 162
155#ifndef CLOCK_MONOTONIC 163#ifndef CLOCK_MONOTONIC
156# undef EV_USE_MONOTONIC 164# undef EV_USE_MONOTONIC
157# define EV_USE_MONOTONIC 0 165# define EV_USE_MONOTONIC 0
158#endif 166#endif
… …
454 } 462 }
455#endif 463#endif
456 464
457 anfd->reify = 0; 465 anfd->reify = 0;
458 466
459 method_modify (EV_A_ fd, anfd->events, events); 467 backend_modify (EV_A_ fd, anfd->events, events);
460 anfd->events = events; 468 anfd->events = events;
461 } 469 }
462 470
463 fdchangecnt = 0; 471 fdchangecnt = 0;
464} 472}
… …
522 fd_kill (EV_A_ fd); 530 fd_kill (EV_A_ fd);
523 return; 531 return;
524 } 532 }
525} 533}
526 534
527/* 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 */
528static void 536static void
529fd_rearm_all (EV_P) 537fd_rearm_all (EV_P)
530{ 538{
531 int fd; 539 int fd;
532 540
… …
723 int pid, status; 731 int pid, status;
724 732
725 if (0 < (pid = waitpid (-1, &status, WNOHANG | WUNTRACED | WCONTINUED))) 733 if (0 < (pid = waitpid (-1, &status, WNOHANG | WUNTRACED | WCONTINUED)))
726 { 734 {
727 /* 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 */
728 ev_feed_event (EV_A_ (W)sw, EV_SIGNAL); 737 ev_feed_event (EV_A_ (W)sw, EV_SIGNAL);
729 738
730 child_reap (EV_A_ sw, pid, pid, status); 739 child_reap (EV_A_ sw, pid, pid, status);
731 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 */
732 } 741 }
733} 742}
734 743
735#endif 744#endif
736 745
… …
775 || getgid () != getegid (); 784 || getgid () != getegid ();
776#endif 785#endif
777} 786}
778 787
779unsigned int 788unsigned int
780ev_method (EV_P) 789ev_supported_backends (void)
781{ 790{
782 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_backend (EV_P)
822{
823 return backend;
783} 824}
784 825
785static void 826static void
786loop_init (EV_P_ unsigned int flags) 827loop_init (EV_P_ unsigned int flags)
787{ 828{
788 if (!method) 829 if (!backend)
789 { 830 {
790#if EV_USE_MONOTONIC 831#if EV_USE_MONOTONIC
791 { 832 {
792 struct timespec ts; 833 struct timespec ts;
793 if (!clock_gettime (CLOCK_MONOTONIC, &ts)) 834 if (!clock_gettime (CLOCK_MONOTONIC, &ts))
… …
798 ev_rt_now = ev_time (); 839 ev_rt_now = ev_time ();
799 mn_now = get_clock (); 840 mn_now = get_clock ();
800 now_floor = mn_now; 841 now_floor = mn_now;
801 rtmn_diff = ev_rt_now - mn_now; 842 rtmn_diff = ev_rt_now - mn_now;
802 843
803 if (!(flags & EVFLAG_NOENV) && !enable_secure () && getenv ("LIBEV_FLAGS")) 844 if (!(flags & EVFLAG_NOENV)
845 && !enable_secure ()
846 && getenv ("LIBEV_FLAGS"))
804 flags = atoi (getenv ("LIBEV_FLAGS")); 847 flags = atoi (getenv ("LIBEV_FLAGS"));
805 848
806 if (!(flags & 0x0000ffff)) 849 if (!(flags & 0x0000ffffUL))
807 flags |= 0x0000ffff; 850 flags |= ev_recommended_backends ();
808 851
809 method = 0; 852 backend = 0;
810#if EV_USE_PORT 853#if EV_USE_PORT
811 if (!method && (flags & EVMETHOD_PORT )) method = port_init (EV_A_ flags); 854 if (!backend && (flags & EVBACKEND_PORT )) backend = port_init (EV_A_ flags);
812#endif 855#endif
813#if EV_USE_KQUEUE 856#if EV_USE_KQUEUE
814 if (!method && (flags & EVMETHOD_KQUEUE)) method = kqueue_init (EV_A_ flags); 857 if (!backend && (flags & EVBACKEND_KQUEUE)) backend = kqueue_init (EV_A_ flags);
815#endif 858#endif
816#if EV_USE_EPOLL 859#if EV_USE_EPOLL
817 if (!method && (flags & EVMETHOD_EPOLL )) method = epoll_init (EV_A_ flags); 860 if (!backend && (flags & EVBACKEND_EPOLL )) backend = epoll_init (EV_A_ flags);
818#endif 861#endif
819#if EV_USE_POLL 862#if EV_USE_POLL
820 if (!method && (flags & EVMETHOD_POLL )) method = poll_init (EV_A_ flags); 863 if (!backend && (flags & EVBACKEND_POLL )) backend = poll_init (EV_A_ flags);
821#endif 864#endif
822#if EV_USE_SELECT 865#if EV_USE_SELECT
823 if (!method && (flags & EVMETHOD_SELECT)) method = select_init (EV_A_ flags); 866 if (!backend && (flags & EVBACKEND_SELECT)) backend = select_init (EV_A_ flags);
824#endif 867#endif
825 868
826 ev_init (&sigev, sigcb); 869 ev_init (&sigev, sigcb);
827 ev_set_priority (&sigev, EV_MAXPRI); 870 ev_set_priority (&sigev, EV_MAXPRI);
828 } 871 }
… …
832loop_destroy (EV_P) 875loop_destroy (EV_P)
833{ 876{
834 int i; 877 int i;
835 878
836#if EV_USE_PORT 879#if EV_USE_PORT
837 if (method == EVMETHOD_PORT ) port_destroy (EV_A); 880 if (backend == EVBACKEND_PORT ) port_destroy (EV_A);
838#endif 881#endif
839#if EV_USE_KQUEUE 882#if EV_USE_KQUEUE
840 if (method == EVMETHOD_KQUEUE) kqueue_destroy (EV_A); 883 if (backend == EVBACKEND_KQUEUE) kqueue_destroy (EV_A);
841#endif 884#endif
842#if EV_USE_EPOLL 885#if EV_USE_EPOLL
843 if (method == EVMETHOD_EPOLL ) epoll_destroy (EV_A); 886 if (backend == EVBACKEND_EPOLL ) epoll_destroy (EV_A);
844#endif 887#endif
845#if EV_USE_POLL 888#if EV_USE_POLL
846 if (method == EVMETHOD_POLL ) poll_destroy (EV_A); 889 if (backend == EVBACKEND_POLL ) poll_destroy (EV_A);
847#endif 890#endif
848#if EV_USE_SELECT 891#if EV_USE_SELECT
849 if (method == EVMETHOD_SELECT) select_destroy (EV_A); 892 if (backend == EVBACKEND_SELECT) select_destroy (EV_A);
850#endif 893#endif
851 894
852 for (i = NUMPRI; i--; ) 895 for (i = NUMPRI; i--; )
853 array_free (pending, [i]); 896 array_free (pending, [i]);
854 897
… …
860#endif 903#endif
861 array_free (idle, EMPTY0); 904 array_free (idle, EMPTY0);
862 array_free (prepare, EMPTY0); 905 array_free (prepare, EMPTY0);
863 array_free (check, EMPTY0); 906 array_free (check, EMPTY0);
864 907
865 method = 0; 908 backend = 0;
866} 909}
867 910
868static void 911static void
869loop_fork (EV_P) 912loop_fork (EV_P)
870{ 913{
871#if EV_USE_PORT 914#if EV_USE_PORT
872 if (method == EVMETHOD_PORT ) port_fork (EV_A); 915 if (backend == EVBACKEND_PORT ) port_fork (EV_A);
873#endif 916#endif
874#if EV_USE_KQUEUE 917#if EV_USE_KQUEUE
875 if (method == EVMETHOD_KQUEUE) kqueue_fork (EV_A); 918 if (backend == EVBACKEND_KQUEUE) kqueue_fork (EV_A);
876#endif 919#endif
877#if EV_USE_EPOLL 920#if EV_USE_EPOLL
878 if (method == EVMETHOD_EPOLL ) epoll_fork (EV_A); 921 if (backend == EVBACKEND_EPOLL ) epoll_fork (EV_A);
879#endif 922#endif
880 923
881 if (ev_is_active (&sigev)) 924 if (ev_is_active (&sigev))
882 { 925 {
883 /* default loop */ 926 /* default loop */
… …
904 947
905 memset (loop, 0, sizeof (struct ev_loop)); 948 memset (loop, 0, sizeof (struct ev_loop));
906 949
907 loop_init (EV_A_ flags); 950 loop_init (EV_A_ flags);
908 951
909 if (ev_method (EV_A)) 952 if (ev_backend (EV_A))
910 return loop; 953 return loop;
911 954
912 return 0; 955 return 0;
913} 956}
914 957
… …
947 ev_default_loop_ptr = 1; 990 ev_default_loop_ptr = 1;
948#endif 991#endif
949 992
950 loop_init (EV_A_ flags); 993 loop_init (EV_A_ flags);
951 994
952 if (ev_method (EV_A)) 995 if (ev_backend (EV_A))
953 { 996 {
954 siginit (EV_A); 997 siginit (EV_A);
955 998
956#ifndef _WIN32 999#ifndef _WIN32
957 ev_signal_init (&childev, childcb, SIGCHLD); 1000 ev_signal_init (&childev, childcb, SIGCHLD);
… …
993{ 1036{
994#if EV_MULTIPLICITY 1037#if EV_MULTIPLICITY
995 struct ev_loop *loop = ev_default_loop_ptr; 1038 struct ev_loop *loop = ev_default_loop_ptr;
996#endif 1039#endif
997 1040
998 if (method) 1041 if (backend)
999 postfork = 1; 1042 postfork = 1;
1000} 1043}
1001 1044
1002/*****************************************************************************/ 1045/*****************************************************************************/
1003 1046
… …
1235 { 1278 {
1236 block = MAX_BLOCKTIME; 1279 block = MAX_BLOCKTIME;
1237 1280
1238 if (timercnt) 1281 if (timercnt)
1239 { 1282 {
1240 ev_tstamp to = ((WT)timers [0])->at - mn_now + method_fudge; 1283 ev_tstamp to = ((WT)timers [0])->at - mn_now + backend_fudge;
1241 if (block > to) block = to; 1284 if (block > to) block = to;
1242 } 1285 }
1243 1286
1244#if EV_PERIODICS 1287#if EV_PERIODICS
1245 if (periodiccnt) 1288 if (periodiccnt)
1246 { 1289 {
1247 ev_tstamp to = ((WT)periodics [0])->at - ev_rt_now + method_fudge; 1290 ev_tstamp to = ((WT)periodics [0])->at - ev_rt_now + backend_fudge;
1248 if (block > to) block = to; 1291 if (block > to) block = to;
1249 } 1292 }
1250#endif 1293#endif
1251 1294
1252 if (expect_false (block < 0.)) block = 0.; 1295 if (expect_false (block < 0.)) block = 0.;
1253 } 1296 }
1254 1297
1255 method_poll (EV_A_ block); 1298 backend_poll (EV_A_ block);
1256 1299
1257 /* update ev_rt_now, do magic */ 1300 /* update ev_rt_now, do magic */
1258 time_update (EV_A); 1301 time_update (EV_A);
1259 1302
1260 /* queue pending timers and reschedule them */ 1303 /* queue pending timers and reschedule them */

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