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Comparing libev/ev.c (file contents):
Revision 1.80 by root, Fri Nov 9 15:30:59 2007 UTC vs.
Revision 1.85 by root, Sat Nov 10 03:13:50 2007 UTC

126#define MIN_TIMEJUMP 1. /* minimum timejump that gets detected (if monotonic clock available) */ 126#define MIN_TIMEJUMP 1. /* minimum timejump that gets detected (if monotonic clock available) */
127#define MAX_BLOCKTIME 59.731 /* never wait longer than this time (to detect time jumps) */ 127#define MAX_BLOCKTIME 59.731 /* never wait longer than this time (to detect time jumps) */
128#define PID_HASHSIZE 16 /* size of pid hash table, must be power of two */ 128#define PID_HASHSIZE 16 /* size of pid hash table, must be power of two */
129/*#define CLEANUP_INTERVAL 300. /* how often to try to free memory and re-check fds */ 129/*#define CLEANUP_INTERVAL 300. /* how often to try to free memory and re-check fds */
130 130
131#ifdef EV_H
132# include EV_H
133#else
131#include "ev.h" 134# include "ev.h"
135#endif
132 136
133#if __GNUC__ >= 3 137#if __GNUC__ >= 3
134# define expect(expr,value) __builtin_expect ((expr),(value)) 138# define expect(expr,value) __builtin_expect ((expr),(value))
135# define inline inline 139# define inline inline
136#else 140#else
267#endif 271#endif
268 272
269 return ev_time (); 273 return ev_time ();
270} 274}
271 275
276#if EV_MULTIPLICITY
272ev_tstamp 277ev_tstamp
273ev_now (EV_P) 278ev_now (EV_P)
274{ 279{
275 return rt_now; 280 return ev_rt_now;
276} 281}
282#endif
277 283
278#define array_roundsize(type,n) ((n) | 4 & ~3) 284#define array_roundsize(type,n) ((n) | 4 & ~3)
279 285
280#define array_needsize(type,base,cur,cnt,init) \ 286#define array_needsize(type,base,cur,cnt,init) \
281 if (expect_false ((cnt) > cur)) \ 287 if (expect_false ((cnt) > cur)) \
514 520
515 heap [k] = w; 521 heap [k] = w;
516 ((W)heap [k])->active = k + 1; 522 ((W)heap [k])->active = k + 1;
517} 523}
518 524
525inline void
526adjustheap (WT *heap, int N, int k, ev_tstamp at)
527{
528 ev_tstamp old_at = heap [k]->at;
529 heap [k]->at = at;
530
531 if (old_at < at)
532 downheap (heap, N, k);
533 else
534 upheap (heap, k);
535}
536
519/*****************************************************************************/ 537/*****************************************************************************/
520 538
521typedef struct 539typedef struct
522{ 540{
523 WL head; 541 WL head;
719 if (!clock_gettime (CLOCK_MONOTONIC, &ts)) 737 if (!clock_gettime (CLOCK_MONOTONIC, &ts))
720 have_monotonic = 1; 738 have_monotonic = 1;
721 } 739 }
722#endif 740#endif
723 741
724 rt_now = ev_time (); 742 ev_rt_now = ev_time ();
725 mn_now = get_clock (); 743 mn_now = get_clock ();
726 now_floor = mn_now; 744 now_floor = mn_now;
727 rtmn_diff = rt_now - mn_now; 745 rtmn_diff = ev_rt_now - mn_now;
728 746
729 if (methods == EVMETHOD_AUTO) 747 if (methods == EVMETHOD_AUTO)
730 if (!enable_secure () && getenv ("LIBEV_METHODS")) 748 if (!enable_secure () && getenv ("LIBEV_METHODS"))
731 methods = atoi (getenv ("LIBEV_METHODS")); 749 methods = atoi (getenv ("LIBEV_METHODS"));
732 else 750 else
747#endif 765#endif
748#if EV_USE_SELECT 766#if EV_USE_SELECT
749 if (!method && (methods & EVMETHOD_SELECT)) method = select_init (EV_A_ methods); 767 if (!method && (methods & EVMETHOD_SELECT)) method = select_init (EV_A_ methods);
750#endif 768#endif
751 769
752 ev_watcher_init (&sigev, sigcb); 770 ev_init (&sigev, sigcb);
753 ev_set_priority (&sigev, EV_MAXPRI); 771 ev_set_priority (&sigev, EV_MAXPRI);
754 } 772 }
755} 773}
756 774
757void 775void
944 ANPENDING *p = pendings [pri] + --pendingcnt [pri]; 962 ANPENDING *p = pendings [pri] + --pendingcnt [pri];
945 963
946 if (p->w) 964 if (p->w)
947 { 965 {
948 p->w->pending = 0; 966 p->w->pending = 0;
949 p->w->cb (EV_A_ p->w, p->events); 967 EV_CB_INVOKE (p->w, p->events);
950 } 968 }
951 } 969 }
952} 970}
953 971
954static void 972static void
975} 993}
976 994
977static void 995static void
978periodics_reify (EV_P) 996periodics_reify (EV_P)
979{ 997{
980 while (periodiccnt && ((WT)periodics [0])->at <= rt_now) 998 while (periodiccnt && ((WT)periodics [0])->at <= ev_rt_now)
981 { 999 {
982 struct ev_periodic *w = periodics [0]; 1000 struct ev_periodic *w = periodics [0];
983 1001
984 assert (("inactive timer on periodic heap detected", ev_is_active (w))); 1002 assert (("inactive timer on periodic heap detected", ev_is_active (w)));
985 1003
986 /* first reschedule or stop timer */ 1004 /* first reschedule or stop timer */
987 if (w->reschedule_cb) 1005 if (w->reschedule_cb)
988 { 1006 {
989 ev_tstamp at = ((WT)w)->at = w->reschedule_cb (w, rt_now + 0.0001); 1007 ev_tstamp at = ((WT)w)->at = w->reschedule_cb (w, ev_rt_now + 0.0001);
990 1008
991 assert (("ev_periodic reschedule callback returned time in the past", ((WT)w)->at > rt_now)); 1009 assert (("ev_periodic reschedule callback returned time in the past", ((WT)w)->at > ev_rt_now));
992 downheap ((WT *)periodics, periodiccnt, 0); 1010 downheap ((WT *)periodics, periodiccnt, 0);
993 } 1011 }
994 else if (w->interval) 1012 else if (w->interval)
995 { 1013 {
996 ((WT)w)->at += floor ((rt_now - ((WT)w)->at) / w->interval + 1.) * w->interval; 1014 ((WT)w)->at += floor ((ev_rt_now - ((WT)w)->at) / w->interval + 1.) * w->interval;
997 assert (("ev_periodic timeout in the past detected while processing timers, negative interval?", ((WT)w)->at > rt_now)); 1015 assert (("ev_periodic timeout in the past detected while processing timers, negative interval?", ((WT)w)->at > ev_rt_now));
998 downheap ((WT *)periodics, periodiccnt, 0); 1016 downheap ((WT *)periodics, periodiccnt, 0);
999 } 1017 }
1000 else 1018 else
1001 ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */ 1019 ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */
1002 1020
1013 for (i = 0; i < periodiccnt; ++i) 1031 for (i = 0; i < periodiccnt; ++i)
1014 { 1032 {
1015 struct ev_periodic *w = periodics [i]; 1033 struct ev_periodic *w = periodics [i];
1016 1034
1017 if (w->reschedule_cb) 1035 if (w->reschedule_cb)
1018 ((WT)w)->at = w->reschedule_cb (w, rt_now); 1036 ((WT)w)->at = w->reschedule_cb (w, ev_rt_now);
1019 else if (w->interval) 1037 else if (w->interval)
1020 ((WT)w)->at += ceil ((rt_now - ((WT)w)->at) / w->interval) * w->interval; 1038 ((WT)w)->at += ceil ((ev_rt_now - ((WT)w)->at) / w->interval) * w->interval;
1021 } 1039 }
1022 1040
1023 /* now rebuild the heap */ 1041 /* now rebuild the heap */
1024 for (i = periodiccnt >> 1; i--; ) 1042 for (i = periodiccnt >> 1; i--; )
1025 downheap ((WT *)periodics, periodiccnt, i); 1043 downheap ((WT *)periodics, periodiccnt, i);
1030{ 1048{
1031 mn_now = get_clock (); 1049 mn_now = get_clock ();
1032 1050
1033 if (expect_true (mn_now - now_floor < MIN_TIMEJUMP * .5)) 1051 if (expect_true (mn_now - now_floor < MIN_TIMEJUMP * .5))
1034 { 1052 {
1035 rt_now = rtmn_diff + mn_now; 1053 ev_rt_now = rtmn_diff + mn_now;
1036 return 0; 1054 return 0;
1037 } 1055 }
1038 else 1056 else
1039 { 1057 {
1040 now_floor = mn_now; 1058 now_floor = mn_now;
1041 rt_now = ev_time (); 1059 ev_rt_now = ev_time ();
1042 return 1; 1060 return 1;
1043 } 1061 }
1044} 1062}
1045 1063
1046static void 1064static void
1055 { 1073 {
1056 ev_tstamp odiff = rtmn_diff; 1074 ev_tstamp odiff = rtmn_diff;
1057 1075
1058 for (i = 4; --i; ) /* loop a few times, before making important decisions */ 1076 for (i = 4; --i; ) /* loop a few times, before making important decisions */
1059 { 1077 {
1060 rtmn_diff = rt_now - mn_now; 1078 rtmn_diff = ev_rt_now - mn_now;
1061 1079
1062 if (fabs (odiff - rtmn_diff) < MIN_TIMEJUMP) 1080 if (fabs (odiff - rtmn_diff) < MIN_TIMEJUMP)
1063 return; /* all is well */ 1081 return; /* all is well */
1064 1082
1065 rt_now = ev_time (); 1083 ev_rt_now = ev_time ();
1066 mn_now = get_clock (); 1084 mn_now = get_clock ();
1067 now_floor = mn_now; 1085 now_floor = mn_now;
1068 } 1086 }
1069 1087
1070 periodics_reschedule (EV_A); 1088 periodics_reschedule (EV_A);
1073 } 1091 }
1074 } 1092 }
1075 else 1093 else
1076#endif 1094#endif
1077 { 1095 {
1078 rt_now = ev_time (); 1096 ev_rt_now = ev_time ();
1079 1097
1080 if (expect_false (mn_now > rt_now || mn_now < rt_now - MAX_BLOCKTIME - MIN_TIMEJUMP)) 1098 if (expect_false (mn_now > ev_rt_now || mn_now < ev_rt_now - MAX_BLOCKTIME - MIN_TIMEJUMP))
1081 { 1099 {
1082 periodics_reschedule (EV_A); 1100 periodics_reschedule (EV_A);
1083 1101
1084 /* adjust timers. this is easy, as the offset is the same for all */ 1102 /* adjust timers. this is easy, as the offset is the same for all */
1085 for (i = 0; i < timercnt; ++i) 1103 for (i = 0; i < timercnt; ++i)
1086 ((WT)timers [i])->at += rt_now - mn_now; 1104 ((WT)timers [i])->at += ev_rt_now - mn_now;
1087 } 1105 }
1088 1106
1089 mn_now = rt_now; 1107 mn_now = ev_rt_now;
1090 } 1108 }
1091} 1109}
1092 1110
1093void 1111void
1094ev_ref (EV_P) 1112ev_ref (EV_P)
1134 if (expect_true (have_monotonic)) 1152 if (expect_true (have_monotonic))
1135 time_update_monotonic (EV_A); 1153 time_update_monotonic (EV_A);
1136 else 1154 else
1137#endif 1155#endif
1138 { 1156 {
1139 rt_now = ev_time (); 1157 ev_rt_now = ev_time ();
1140 mn_now = rt_now; 1158 mn_now = ev_rt_now;
1141 } 1159 }
1142 1160
1143 if (flags & EVLOOP_NONBLOCK || idlecnt) 1161 if (flags & EVLOOP_NONBLOCK || idlecnt)
1144 block = 0.; 1162 block = 0.;
1145 else 1163 else
1152 if (block > to) block = to; 1170 if (block > to) block = to;
1153 } 1171 }
1154 1172
1155 if (periodiccnt) 1173 if (periodiccnt)
1156 { 1174 {
1157 ev_tstamp to = ((WT)periodics [0])->at - rt_now + method_fudge; 1175 ev_tstamp to = ((WT)periodics [0])->at - ev_rt_now + method_fudge;
1158 if (block > to) block = to; 1176 if (block > to) block = to;
1159 } 1177 }
1160 1178
1161 if (block < 0.) block = 0.; 1179 if (block < 0.) block = 0.;
1162 } 1180 }
1163 1181
1164 method_poll (EV_A_ block); 1182 method_poll (EV_A_ block);
1165 1183
1166 /* update rt_now, do magic */ 1184 /* update ev_rt_now, do magic */
1167 time_update (EV_A); 1185 time_update (EV_A);
1168 1186
1169 /* queue pending timers and reschedule them */ 1187 /* queue pending timers and reschedule them */
1170 timers_reify (EV_A); /* relative timers called last */ 1188 timers_reify (EV_A); /* relative timers called last */
1171 periodics_reify (EV_A); /* absolute timers called first */ 1189 periodics_reify (EV_A); /* absolute timers called first */
1317ev_timer_again (EV_P_ struct ev_timer *w) 1335ev_timer_again (EV_P_ struct ev_timer *w)
1318{ 1336{
1319 if (ev_is_active (w)) 1337 if (ev_is_active (w))
1320 { 1338 {
1321 if (w->repeat) 1339 if (w->repeat)
1322 {
1323 ((WT)w)->at = mn_now + w->repeat;
1324 downheap ((WT *)timers, timercnt, ((W)w)->active - 1); 1340 adjustheap ((WT *)timers, timercnt, ((W)w)->active - 1, mn_now + w->repeat);
1325 }
1326 else 1341 else
1327 ev_timer_stop (EV_A_ w); 1342 ev_timer_stop (EV_A_ w);
1328 } 1343 }
1329 else if (w->repeat) 1344 else if (w->repeat)
1330 ev_timer_start (EV_A_ w); 1345 ev_timer_start (EV_A_ w);
1335{ 1350{
1336 if (ev_is_active (w)) 1351 if (ev_is_active (w))
1337 return; 1352 return;
1338 1353
1339 if (w->reschedule_cb) 1354 if (w->reschedule_cb)
1340 ((WT)w)->at = w->reschedule_cb (w, rt_now); 1355 ((WT)w)->at = w->reschedule_cb (w, ev_rt_now);
1341 else if (w->interval) 1356 else if (w->interval)
1342 { 1357 {
1343 assert (("ev_periodic_start called with negative interval value", w->interval >= 0.)); 1358 assert (("ev_periodic_start called with negative interval value", w->interval >= 0.));
1344 /* this formula differs from the one in periodic_reify because we do not always round up */ 1359 /* this formula differs from the one in periodic_reify because we do not always round up */
1345 ((WT)w)->at += ceil ((rt_now - ((WT)w)->at) / w->interval) * w->interval; 1360 ((WT)w)->at += ceil ((ev_rt_now - ((WT)w)->at) / w->interval) * w->interval;
1346 } 1361 }
1347 1362
1348 ev_start (EV_A_ (W)w, ++periodiccnt); 1363 ev_start (EV_A_ (W)w, ++periodiccnt);
1349 array_needsize (struct ev_periodic *, periodics, periodicmax, periodiccnt, (void)); 1364 array_needsize (struct ev_periodic *, periodics, periodicmax, periodiccnt, (void));
1350 periodics [periodiccnt - 1] = w; 1365 periodics [periodiccnt - 1] = w;
1372} 1387}
1373 1388
1374void 1389void
1375ev_periodic_again (EV_P_ struct ev_periodic *w) 1390ev_periodic_again (EV_P_ struct ev_periodic *w)
1376{ 1391{
1392 /* TODO: use adjustheap and recalculation */
1377 ev_periodic_stop (EV_A_ w); 1393 ev_periodic_stop (EV_A_ w);
1378 ev_periodic_start (EV_A_ w); 1394 ev_periodic_start (EV_A_ w);
1379} 1395}
1380 1396
1381void 1397void
1560 else 1576 else
1561 { 1577 {
1562 once->cb = cb; 1578 once->cb = cb;
1563 once->arg = arg; 1579 once->arg = arg;
1564 1580
1565 ev_watcher_init (&once->io, once_cb_io); 1581 ev_init (&once->io, once_cb_io);
1566 if (fd >= 0) 1582 if (fd >= 0)
1567 { 1583 {
1568 ev_io_set (&once->io, fd, events); 1584 ev_io_set (&once->io, fd, events);
1569 ev_io_start (EV_A_ &once->io); 1585 ev_io_start (EV_A_ &once->io);
1570 } 1586 }
1571 1587
1572 ev_watcher_init (&once->to, once_cb_to); 1588 ev_init (&once->to, once_cb_to);
1573 if (timeout >= 0.) 1589 if (timeout >= 0.)
1574 { 1590 {
1575 ev_timer_set (&once->to, timeout, 0.); 1591 ev_timer_set (&once->to, timeout, 0.);
1576 ev_timer_start (EV_A_ &once->to); 1592 ev_timer_start (EV_A_ &once->to);
1577 } 1593 }

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