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Comparing libev/ev.c (file contents):
Revision 1.128 by root, Thu Nov 22 12:28:27 2007 UTC vs.
Revision 1.135 by root, Sat Nov 24 06:23:27 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
… …
154# define EV_USE_PORT 0 158# define EV_USE_PORT 0
155#endif 159#endif
156 160
157/**/ 161/**/
158 162
159/* darwin simply cannot be helped */
160#ifdef __APPLE__
161# undef EV_USE_POLL
162# undef EV_USE_KQUEUE
163#endif
164
165#ifndef CLOCK_MONOTONIC 163#ifndef CLOCK_MONOTONIC
166# undef EV_USE_MONOTONIC 164# undef EV_USE_MONOTONIC
167# define EV_USE_MONOTONIC 0 165# define EV_USE_MONOTONIC 0
168#endif 166#endif
169 167
… …
399 { 397 {
400 pendings [ABSPRI (w_)][w_->pending - 1].events |= revents; 398 pendings [ABSPRI (w_)][w_->pending - 1].events |= revents;
401 return; 399 return;
402 } 400 }
403 401
402 if (expect_false (!w_->cb))
403 return;
404
404 w_->pending = ++pendingcnt [ABSPRI (w_)]; 405 w_->pending = ++pendingcnt [ABSPRI (w_)];
405 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);
406 pendings [ABSPRI (w_)][w_->pending - 1].w = w_; 407 pendings [ABSPRI (w_)][w_->pending - 1].w = w_;
407 pendings [ABSPRI (w_)][w_->pending - 1].events = revents; 408 pendings [ABSPRI (w_)][w_->pending - 1].events = revents;
408} 409}
… …
464 } 465 }
465#endif 466#endif
466 467
467 anfd->reify = 0; 468 anfd->reify = 0;
468 469
469 method_modify (EV_A_ fd, anfd->events, events); 470 backend_modify (EV_A_ fd, anfd->events, events);
470 anfd->events = events; 471 anfd->events = events;
471 } 472 }
472 473
473 fdchangecnt = 0; 474 fdchangecnt = 0;
474} 475}
… …
532 fd_kill (EV_A_ fd); 533 fd_kill (EV_A_ fd);
533 return; 534 return;
534 } 535 }
535} 536}
536 537
537/* 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 */
538static void 539static void
539fd_rearm_all (EV_P) 540fd_rearm_all (EV_P)
540{ 541{
541 int fd; 542 int fd;
542 543
… …
733 int pid, status; 734 int pid, status;
734 735
735 if (0 < (pid = waitpid (-1, &status, WNOHANG | WUNTRACED | WCONTINUED))) 736 if (0 < (pid = waitpid (-1, &status, WNOHANG | WUNTRACED | WCONTINUED)))
736 { 737 {
737 /* 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 */
738 ev_feed_event (EV_A_ (W)sw, EV_SIGNAL); 740 ev_feed_event (EV_A_ (W)sw, EV_SIGNAL);
739 741
740 child_reap (EV_A_ sw, pid, pid, status); 742 child_reap (EV_A_ sw, pid, pid, status);
741 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 */
742 } 744 }
743} 745}
744 746
745#endif 747#endif
746 748
… …
785 || getgid () != getegid (); 787 || getgid () != getegid ();
786#endif 788#endif
787} 789}
788 790
789unsigned int 791unsigned int
790ev_method (EV_P) 792ev_supported_backends (void)
791{ 793{
792 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;
793} 835}
794 836
795static void 837static void
796loop_init (EV_P_ unsigned int flags) 838loop_init (EV_P_ unsigned int flags)
797{ 839{
798 if (!method) 840 if (!backend)
799 { 841 {
800#if EV_USE_MONOTONIC 842#if EV_USE_MONOTONIC
801 { 843 {
802 struct timespec ts; 844 struct timespec ts;
803 if (!clock_gettime (CLOCK_MONOTONIC, &ts)) 845 if (!clock_gettime (CLOCK_MONOTONIC, &ts))
… …
813 if (!(flags & EVFLAG_NOENV) 855 if (!(flags & EVFLAG_NOENV)
814 && !enable_secure () 856 && !enable_secure ()
815 && getenv ("LIBEV_FLAGS")) 857 && getenv ("LIBEV_FLAGS"))
816 flags = atoi (getenv ("LIBEV_FLAGS")); 858 flags = atoi (getenv ("LIBEV_FLAGS"));
817 859
818 if (!(flags & EVMETHOD_ALL)) 860 if (!(flags & 0x0000ffffUL))
819 { 861 flags |= ev_recommended_backends ();
820 flags |= EVMETHOD_ALL;
821#if EV_USE_KQUEUE && !defined (__NetBSD__)
822 /* kqueue is borked on everything but netbsd apparently */
823 /* it usually doesn't work correctly on anything but sockets and pipes */
824 flags &= ~EVMETHOD_KQUEUE;
825#endif
826 }
827 862
828 method = 0; 863 backend = 0;
829#if EV_USE_PORT 864#if EV_USE_PORT
830 if (!method && (flags & EVMETHOD_PORT )) method = port_init (EV_A_ flags); 865 if (!backend && (flags & EVBACKEND_PORT )) backend = port_init (EV_A_ flags);
831#endif 866#endif
832#if EV_USE_KQUEUE 867#if EV_USE_KQUEUE
833 if (!method && (flags & EVMETHOD_KQUEUE)) method = kqueue_init (EV_A_ flags); 868 if (!backend && (flags & EVBACKEND_KQUEUE)) backend = kqueue_init (EV_A_ flags);
834#endif 869#endif
835#if EV_USE_EPOLL 870#if EV_USE_EPOLL
836 if (!method && (flags & EVMETHOD_EPOLL )) method = epoll_init (EV_A_ flags); 871 if (!backend && (flags & EVBACKEND_EPOLL )) backend = epoll_init (EV_A_ flags);
837#endif 872#endif
838#if EV_USE_POLL 873#if EV_USE_POLL
839 if (!method && (flags & EVMETHOD_POLL )) method = poll_init (EV_A_ flags); 874 if (!backend && (flags & EVBACKEND_POLL )) backend = poll_init (EV_A_ flags);
840#endif 875#endif
841#if EV_USE_SELECT 876#if EV_USE_SELECT
842 if (!method && (flags & EVMETHOD_SELECT)) method = select_init (EV_A_ flags); 877 if (!backend && (flags & EVBACKEND_SELECT)) backend = select_init (EV_A_ flags);
843#endif 878#endif
844 879
845 ev_init (&sigev, sigcb); 880 ev_init (&sigev, sigcb);
846 ev_set_priority (&sigev, EV_MAXPRI); 881 ev_set_priority (&sigev, EV_MAXPRI);
847 } 882 }
… …
851loop_destroy (EV_P) 886loop_destroy (EV_P)
852{ 887{
853 int i; 888 int i;
854 889
855#if EV_USE_PORT 890#if EV_USE_PORT
856 if (method == EVMETHOD_PORT ) port_destroy (EV_A); 891 if (backend == EVBACKEND_PORT ) port_destroy (EV_A);
857#endif 892#endif
858#if EV_USE_KQUEUE 893#if EV_USE_KQUEUE
859 if (method == EVMETHOD_KQUEUE) kqueue_destroy (EV_A); 894 if (backend == EVBACKEND_KQUEUE) kqueue_destroy (EV_A);
860#endif 895#endif
861#if EV_USE_EPOLL 896#if EV_USE_EPOLL
862 if (method == EVMETHOD_EPOLL ) epoll_destroy (EV_A); 897 if (backend == EVBACKEND_EPOLL ) epoll_destroy (EV_A);
863#endif 898#endif
864#if EV_USE_POLL 899#if EV_USE_POLL
865 if (method == EVMETHOD_POLL ) poll_destroy (EV_A); 900 if (backend == EVBACKEND_POLL ) poll_destroy (EV_A);
866#endif 901#endif
867#if EV_USE_SELECT 902#if EV_USE_SELECT
868 if (method == EVMETHOD_SELECT) select_destroy (EV_A); 903 if (backend == EVBACKEND_SELECT) select_destroy (EV_A);
869#endif 904#endif
870 905
871 for (i = NUMPRI; i--; ) 906 for (i = NUMPRI; i--; )
872 array_free (pending, [i]); 907 array_free (pending, [i]);
873 908
… …
879#endif 914#endif
880 array_free (idle, EMPTY0); 915 array_free (idle, EMPTY0);
881 array_free (prepare, EMPTY0); 916 array_free (prepare, EMPTY0);
882 array_free (check, EMPTY0); 917 array_free (check, EMPTY0);
883 918
884 method = 0; 919 backend = 0;
885} 920}
886 921
887static void 922static void
888loop_fork (EV_P) 923loop_fork (EV_P)
889{ 924{
890#if EV_USE_PORT 925#if EV_USE_PORT
891 if (method == EVMETHOD_PORT ) port_fork (EV_A); 926 if (backend == EVBACKEND_PORT ) port_fork (EV_A);
892#endif 927#endif
893#if EV_USE_KQUEUE 928#if EV_USE_KQUEUE
894 if (method == EVMETHOD_KQUEUE) kqueue_fork (EV_A); 929 if (backend == EVBACKEND_KQUEUE) kqueue_fork (EV_A);
895#endif 930#endif
896#if EV_USE_EPOLL 931#if EV_USE_EPOLL
897 if (method == EVMETHOD_EPOLL ) epoll_fork (EV_A); 932 if (backend == EVBACKEND_EPOLL ) epoll_fork (EV_A);
898#endif 933#endif
899 934
900 if (ev_is_active (&sigev)) 935 if (ev_is_active (&sigev))
901 { 936 {
902 /* default loop */ 937 /* default loop */
… …
923 958
924 memset (loop, 0, sizeof (struct ev_loop)); 959 memset (loop, 0, sizeof (struct ev_loop));
925 960
926 loop_init (EV_A_ flags); 961 loop_init (EV_A_ flags);
927 962
928 if (ev_method (EV_A)) 963 if (ev_backend (EV_A))
929 return loop; 964 return loop;
930 965
931 return 0; 966 return 0;
932} 967}
933 968
… …
966 ev_default_loop_ptr = 1; 1001 ev_default_loop_ptr = 1;
967#endif 1002#endif
968 1003
969 loop_init (EV_A_ flags); 1004 loop_init (EV_A_ flags);
970 1005
971 if (ev_method (EV_A)) 1006 if (ev_backend (EV_A))
972 { 1007 {
973 siginit (EV_A); 1008 siginit (EV_A);
974 1009
975#ifndef _WIN32 1010#ifndef _WIN32
976 ev_signal_init (&childev, childcb, SIGCHLD); 1011 ev_signal_init (&childev, childcb, SIGCHLD);
… …
1012{ 1047{
1013#if EV_MULTIPLICITY 1048#if EV_MULTIPLICITY
1014 struct ev_loop *loop = ev_default_loop_ptr; 1049 struct ev_loop *loop = ev_default_loop_ptr;
1015#endif 1050#endif
1016 1051
1017 if (method) 1052 if (backend)
1018 postfork = 1; 1053 postfork = 1;
1019} 1054}
1020 1055
1021/*****************************************************************************/ 1056/*****************************************************************************/
1022 1057
… …
1213static int loop_done; 1248static int loop_done;
1214 1249
1215void 1250void
1216ev_loop (EV_P_ int flags) 1251ev_loop (EV_P_ int flags)
1217{ 1252{
1218 double block;
1219 loop_done = flags & (EVLOOP_ONESHOT | EVLOOP_NONBLOCK) ? 1 : 0; 1253 loop_done = flags & (EVLOOP_ONESHOT | EVLOOP_NONBLOCK)
1254 ? EVUNLOOP_ONE
1255 : EVUNLOOP_CANCEL;
1220 1256
1221 while (activecnt) 1257 while (activecnt)
1222 { 1258 {
1223 /* queue check watchers (and execute them) */ 1259 /* queue check watchers (and execute them) */
1224 if (expect_false (preparecnt)) 1260 if (expect_false (preparecnt))
… …
1233 1269
1234 /* update fd-related kernel structures */ 1270 /* update fd-related kernel structures */
1235 fd_reify (EV_A); 1271 fd_reify (EV_A);
1236 1272
1237 /* calculate blocking time */ 1273 /* calculate blocking time */
1274 {
1275 double block;
1238 1276
1239 /* we only need this for !monotonic clock or timers, but as we basically 1277 if (flags & EVLOOP_NONBLOCK || idlecnt)
1240 always have timers, we just calculate it always */ 1278 block = 0.; /* do not block at all */
1279 else
1280 {
1281 /* update time to cancel out callback processing overhead */
1241#if EV_USE_MONOTONIC 1282#if EV_USE_MONOTONIC
1242 if (expect_true (have_monotonic)) 1283 if (expect_true (have_monotonic))
1243 time_update_monotonic (EV_A); 1284 time_update_monotonic (EV_A);
1244 else 1285 else
1245#endif 1286#endif
1246 { 1287 {
1247 ev_rt_now = ev_time (); 1288 ev_rt_now = ev_time ();
1248 mn_now = ev_rt_now; 1289 mn_now = ev_rt_now;
1249 } 1290 }
1250 1291
1251 if (flags & EVLOOP_NONBLOCK || idlecnt)
1252 block = 0.;
1253 else
1254 {
1255 block = MAX_BLOCKTIME; 1292 block = MAX_BLOCKTIME;
1256 1293
1257 if (timercnt) 1294 if (timercnt)
1258 { 1295 {
1259 ev_tstamp to = ((WT)timers [0])->at - mn_now + method_fudge; 1296 ev_tstamp to = ((WT)timers [0])->at - mn_now + backend_fudge;
1260 if (block > to) block = to; 1297 if (block > to) block = to;
1261 } 1298 }
1262 1299
1263#if EV_PERIODICS 1300#if EV_PERIODICS
1264 if (periodiccnt) 1301 if (periodiccnt)
1265 { 1302 {
1266 ev_tstamp to = ((WT)periodics [0])->at - ev_rt_now + method_fudge; 1303 ev_tstamp to = ((WT)periodics [0])->at - ev_rt_now + backend_fudge;
1267 if (block > to) block = to; 1304 if (block > to) block = to;
1268 } 1305 }
1269#endif 1306#endif
1270 1307
1271 if (expect_false (block < 0.)) block = 0.; 1308 if (expect_false (block < 0.)) block = 0.;
1272 } 1309 }
1273 1310
1274 method_poll (EV_A_ block); 1311 backend_poll (EV_A_ block);
1312 }
1275 1313
1276 /* update ev_rt_now, do magic */ 1314 /* update ev_rt_now, do magic */
1277 time_update (EV_A); 1315 time_update (EV_A);
1278 1316
1279 /* queue pending timers and reschedule them */ 1317 /* queue pending timers and reschedule them */
… …
1294 1332
1295 if (expect_false (loop_done)) 1333 if (expect_false (loop_done))
1296 break; 1334 break;
1297 } 1335 }
1298 1336
1299 if (loop_done != 2) 1337 if (loop_done == EVUNLOOP_ONE)
1300 loop_done = 0; 1338 loop_done = EVUNLOOP_CANCEL;
1301} 1339}
1302 1340
1303void 1341void
1304ev_unloop (EV_P_ int how) 1342ev_unloop (EV_P_ int how)
1305{ 1343{
… …
1635 1673
1636 wlist_del ((WL *)&childs [w->pid & (PID_HASHSIZE - 1)], (WL)w); 1674 wlist_del ((WL *)&childs [w->pid & (PID_HASHSIZE - 1)], (WL)w);
1637 ev_stop (EV_A_ (W)w); 1675 ev_stop (EV_A_ (W)w);
1638} 1676}
1639 1677
1678#if EV_MULTIPLICITY
1679static void
1680embed_cb (EV_P_ struct ev_io *io, int revents)
1681{
1682 struct ev_embed *w = (struct ev_embed *)(((char *)io) - offsetof (struct ev_embed, io));
1683
1684 ev_feed_event (EV_A_ (W)w, EV_EMBED);
1685 ev_loop (w->loop, EVLOOP_NONBLOCK);
1686}
1687
1688void
1689ev_embed_start (EV_P_ struct ev_embed *w)
1690{
1691 if (expect_false (ev_is_active (w)))
1692 return;
1693
1694 {
1695 struct ev_loop *loop = w->loop;
1696 assert (("loop to be embedded is not embeddable", backend & ev_embeddable_backends ()));
1697 ev_io_init (&w->io, embed_cb, backend_fd, EV_READ);
1698 }
1699
1700 ev_io_start (EV_A_ &w->io);
1701 ev_start (EV_A_ (W)w, 1);
1702}
1703
1704void
1705ev_embed_stop (EV_P_ struct ev_embed *w)
1706{
1707 ev_clear_pending (EV_A_ (W)w);
1708 if (expect_false (!ev_is_active (w)))
1709 return;
1710
1711 ev_io_stop (EV_A_ &w->io);
1712 ev_stop (EV_A_ (W)w);
1713}
1714#endif
1715
1640/*****************************************************************************/ 1716/*****************************************************************************/
1641 1717
1642struct ev_once 1718struct ev_once
1643{ 1719{
1644 struct ev_io io; 1720 struct ev_io io;

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