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Comparing libev/ev.c (file contents):
Revision 1.79 by root, Fri Nov 9 15:15:20 2007 UTC vs.
Revision 1.87 by root, Sat Nov 10 03:36:15 2007 UTC

… …
26 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 26 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
27 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 27 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
28 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE 28 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
29 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 29 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
30 */ 30 */
31
32#ifdef __cplusplus
33extern "C" {
34#endif
35
31#ifndef EV_STANDALONE 36#ifndef EV_STANDALONE
32# include "config.h" 37# include "config.h"
33 38
34# if HAVE_CLOCK_GETTIME 39# if HAVE_CLOCK_GETTIME
35# define EV_USE_MONOTONIC 1 40# define EV_USE_MONOTONIC 1
… …
126#define MIN_TIMEJUMP 1. /* minimum timejump that gets detected (if monotonic clock available) */ 131#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) */ 132#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 */ 133#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 */ 134/*#define CLEANUP_INTERVAL 300. /* how often to try to free memory and re-check fds */
130 135
136#ifdef EV_H
137# include EV_H
138#else
131#include "ev.h" 139# include "ev.h"
140#endif
132 141
133#if __GNUC__ >= 3 142#if __GNUC__ >= 3
134# define expect(expr,value) __builtin_expect ((expr),(value)) 143# define expect(expr,value) __builtin_expect ((expr),(value))
135# define inline inline 144# define inline inline
136#else 145#else
… …
215 int events; 224 int events;
216} ANPENDING; 225} ANPENDING;
217 226
218#if EV_MULTIPLICITY 227#if EV_MULTIPLICITY
219 228
220struct ev_loop 229 struct ev_loop
221{ 230 {
231 ev_tstamp ev_rt_now;
222# define VAR(name,decl) decl; 232 #define VAR(name,decl) decl;
223# include "ev_vars.h" 233 #include "ev_vars.h"
224};
225# undef VAR 234 #undef VAR
235 };
226# include "ev_wrap.h" 236 #include "ev_wrap.h"
237
238 struct ev_loop default_loop_struct;
239 static struct ev_loop *default_loop;
227 240
228#else 241#else
229 242
243 ev_tstamp ev_rt_now;
230# define VAR(name,decl) static decl; 244 #define VAR(name,decl) static decl;
231# include "ev_vars.h" 245 #include "ev_vars.h"
232# undef VAR 246 #undef VAR
247
248 static int default_loop;
233 249
234#endif 250#endif
235 251
236/*****************************************************************************/ 252/*****************************************************************************/
237 253
… …
262#endif 278#endif
263 279
264 return ev_time (); 280 return ev_time ();
265} 281}
266 282
283#if EV_MULTIPLICITY
267ev_tstamp 284ev_tstamp
268ev_now (EV_P) 285ev_now (EV_P)
269{ 286{
270 return rt_now; 287 return ev_rt_now;
271} 288}
289#endif
272 290
273#define array_roundsize(type,n) ((n) | 4 & ~3) 291#define array_roundsize(type,n) ((n) | 4 & ~3)
274 292
275#define array_needsize(type,base,cur,cnt,init) \ 293#define array_needsize(type,base,cur,cnt,init) \
276 if (expect_false ((cnt) > cur)) \ 294 if (expect_false ((cnt) > cur)) \
… …
509 527
510 heap [k] = w; 528 heap [k] = w;
511 ((W)heap [k])->active = k + 1; 529 ((W)heap [k])->active = k + 1;
512} 530}
513 531
532inline void
533adjustheap (WT *heap, int N, int k, ev_tstamp at)
534{
535 ev_tstamp old_at = heap [k]->at;
536 heap [k]->at = at;
537
538 if (old_at < at)
539 downheap (heap, N, k);
540 else
541 upheap (heap, k);
542}
543
514/*****************************************************************************/ 544/*****************************************************************************/
515 545
516typedef struct 546typedef struct
517{ 547{
518 WL head; 548 WL head;
… …
561} 591}
562 592
563void 593void
564ev_feed_signal_event (EV_P_ int signum) 594ev_feed_signal_event (EV_P_ int signum)
565{ 595{
596 WL w;
597
566#if EV_MULTIPLICITY 598#if EV_MULTIPLICITY
567 assert (("feeding signal events is only supported in the default loop", loop == default_loop)); 599 assert (("feeding signal events is only supported in the default loop", loop == default_loop));
568#endif 600#endif
569 601
570 --signum; 602 --signum;
… …
579} 611}
580 612
581static void 613static void
582sigcb (EV_P_ struct ev_io *iow, int revents) 614sigcb (EV_P_ struct ev_io *iow, int revents)
583{ 615{
584 WL w;
585 int signum; 616 int signum;
586 617
587#ifdef WIN32 618#ifdef WIN32
588 recv (sigpipe [0], &revents, 1, MSG_DONTWAIT); 619 recv (sigpipe [0], &revents, 1, MSG_DONTWAIT);
589#else 620#else
… …
591#endif 622#endif
592 gotsig = 0; 623 gotsig = 0;
593 624
594 for (signum = signalmax; signum--; ) 625 for (signum = signalmax; signum--; )
595 if (signals [signum].gotsig) 626 if (signals [signum].gotsig)
596 sigevent (EV_A_ signum + 1); 627 ev_feed_signal_event (EV_A_ signum + 1);
597} 628}
598 629
599static void 630static void
600siginit (EV_P) 631siginit (EV_P)
601{ 632{
… …
713 if (!clock_gettime (CLOCK_MONOTONIC, &ts)) 744 if (!clock_gettime (CLOCK_MONOTONIC, &ts))
714 have_monotonic = 1; 745 have_monotonic = 1;
715 } 746 }
716#endif 747#endif
717 748
718 rt_now = ev_time (); 749 ev_rt_now = ev_time ();
719 mn_now = get_clock (); 750 mn_now = get_clock ();
720 now_floor = mn_now; 751 now_floor = mn_now;
721 rtmn_diff = rt_now - mn_now; 752 rtmn_diff = ev_rt_now - mn_now;
722 753
723 if (methods == EVMETHOD_AUTO) 754 if (methods == EVMETHOD_AUTO)
724 if (!enable_secure () && getenv ("LIBEV_METHODS")) 755 if (!enable_secure () && getenv ("LIBEV_METHODS"))
725 methods = atoi (getenv ("LIBEV_METHODS")); 756 methods = atoi (getenv ("LIBEV_METHODS"));
726 else 757 else
… …
741#endif 772#endif
742#if EV_USE_SELECT 773#if EV_USE_SELECT
743 if (!method && (methods & EVMETHOD_SELECT)) method = select_init (EV_A_ methods); 774 if (!method && (methods & EVMETHOD_SELECT)) method = select_init (EV_A_ methods);
744#endif 775#endif
745 776
746 ev_watcher_init (&sigev, sigcb); 777 ev_init (&sigev, sigcb);
747 ev_set_priority (&sigev, EV_MAXPRI); 778 ev_set_priority (&sigev, EV_MAXPRI);
748 } 779 }
749} 780}
750 781
751void 782void
… …
841} 872}
842 873
843#endif 874#endif
844 875
845#if EV_MULTIPLICITY 876#if EV_MULTIPLICITY
846struct ev_loop default_loop_struct;
847static struct ev_loop *default_loop;
848
849struct ev_loop * 877struct ev_loop *
850#else 878#else
851static int default_loop;
852
853int 879int
854#endif 880#endif
855ev_default_loop (int methods) 881ev_default_loop (int methods)
856{ 882{
857 if (sigpipe [0] == sigpipe [1]) 883 if (sigpipe [0] == sigpipe [1])
… …
943 ANPENDING *p = pendings [pri] + --pendingcnt [pri]; 969 ANPENDING *p = pendings [pri] + --pendingcnt [pri];
944 970
945 if (p->w) 971 if (p->w)
946 { 972 {
947 p->w->pending = 0; 973 p->w->pending = 0;
948 p->w->cb (EV_A_ p->w, p->events); 974 EV_CB_INVOKE (p->w, p->events);
949 } 975 }
950 } 976 }
951} 977}
952 978
953static void 979static void
… …
974} 1000}
975 1001
976static void 1002static void
977periodics_reify (EV_P) 1003periodics_reify (EV_P)
978{ 1004{
979 while (periodiccnt && ((WT)periodics [0])->at <= rt_now) 1005 while (periodiccnt && ((WT)periodics [0])->at <= ev_rt_now)
980 { 1006 {
981 struct ev_periodic *w = periodics [0]; 1007 struct ev_periodic *w = periodics [0];
982 1008
983 assert (("inactive timer on periodic heap detected", ev_is_active (w))); 1009 assert (("inactive timer on periodic heap detected", ev_is_active (w)));
984 1010
985 /* first reschedule or stop timer */ 1011 /* first reschedule or stop timer */
986 if (w->reschedule_cb) 1012 if (w->reschedule_cb)
987 { 1013 {
988 ev_tstamp at = ((WT)w)->at = w->reschedule_cb (w, rt_now + 0.0001); 1014 ev_tstamp at = ((WT)w)->at = w->reschedule_cb (w, ev_rt_now + 0.0001);
989 1015
990 assert (("ev_periodic reschedule callback returned time in the past", ((WT)w)->at > rt_now)); 1016 assert (("ev_periodic reschedule callback returned time in the past", ((WT)w)->at > ev_rt_now));
991 downheap ((WT *)periodics, periodiccnt, 0); 1017 downheap ((WT *)periodics, periodiccnt, 0);
992 } 1018 }
993 else if (w->interval) 1019 else if (w->interval)
994 { 1020 {
995 ((WT)w)->at += floor ((rt_now - ((WT)w)->at) / w->interval + 1.) * w->interval; 1021 ((WT)w)->at += floor ((ev_rt_now - ((WT)w)->at) / w->interval + 1.) * w->interval;
996 assert (("ev_periodic timeout in the past detected while processing timers, negative interval?", ((WT)w)->at > rt_now)); 1022 assert (("ev_periodic timeout in the past detected while processing timers, negative interval?", ((WT)w)->at > ev_rt_now));
997 downheap ((WT *)periodics, periodiccnt, 0); 1023 downheap ((WT *)periodics, periodiccnt, 0);
998 } 1024 }
999 else 1025 else
1000 ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */ 1026 ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */
1001 1027
… …
1012 for (i = 0; i < periodiccnt; ++i) 1038 for (i = 0; i < periodiccnt; ++i)
1013 { 1039 {
1014 struct ev_periodic *w = periodics [i]; 1040 struct ev_periodic *w = periodics [i];
1015 1041
1016 if (w->reschedule_cb) 1042 if (w->reschedule_cb)
1017 ((WT)w)->at = w->reschedule_cb (w, rt_now); 1043 ((WT)w)->at = w->reschedule_cb (w, ev_rt_now);
1018 else if (w->interval) 1044 else if (w->interval)
1019 ((WT)w)->at += ceil ((rt_now - ((WT)w)->at) / w->interval) * w->interval; 1045 ((WT)w)->at += ceil ((ev_rt_now - ((WT)w)->at) / w->interval) * w->interval;
1020 } 1046 }
1021 1047
1022 /* now rebuild the heap */ 1048 /* now rebuild the heap */
1023 for (i = periodiccnt >> 1; i--; ) 1049 for (i = periodiccnt >> 1; i--; )
1024 downheap ((WT *)periodics, periodiccnt, i); 1050 downheap ((WT *)periodics, periodiccnt, i);
… …
1029{ 1055{
1030 mn_now = get_clock (); 1056 mn_now = get_clock ();
1031 1057
1032 if (expect_true (mn_now - now_floor < MIN_TIMEJUMP * .5)) 1058 if (expect_true (mn_now - now_floor < MIN_TIMEJUMP * .5))
1033 { 1059 {
1034 rt_now = rtmn_diff + mn_now; 1060 ev_rt_now = rtmn_diff + mn_now;
1035 return 0; 1061 return 0;
1036 } 1062 }
1037 else 1063 else
1038 { 1064 {
1039 now_floor = mn_now; 1065 now_floor = mn_now;
1040 rt_now = ev_time (); 1066 ev_rt_now = ev_time ();
1041 return 1; 1067 return 1;
1042 } 1068 }
1043} 1069}
1044 1070
1045static void 1071static void
… …
1054 { 1080 {
1055 ev_tstamp odiff = rtmn_diff; 1081 ev_tstamp odiff = rtmn_diff;
1056 1082
1057 for (i = 4; --i; ) /* loop a few times, before making important decisions */ 1083 for (i = 4; --i; ) /* loop a few times, before making important decisions */
1058 { 1084 {
1059 rtmn_diff = rt_now - mn_now; 1085 rtmn_diff = ev_rt_now - mn_now;
1060 1086
1061 if (fabs (odiff - rtmn_diff) < MIN_TIMEJUMP) 1087 if (fabs (odiff - rtmn_diff) < MIN_TIMEJUMP)
1062 return; /* all is well */ 1088 return; /* all is well */
1063 1089
1064 rt_now = ev_time (); 1090 ev_rt_now = ev_time ();
1065 mn_now = get_clock (); 1091 mn_now = get_clock ();
1066 now_floor = mn_now; 1092 now_floor = mn_now;
1067 } 1093 }
1068 1094
1069 periodics_reschedule (EV_A); 1095 periodics_reschedule (EV_A);
… …
1072 } 1098 }
1073 } 1099 }
1074 else 1100 else
1075#endif 1101#endif
1076 { 1102 {
1077 rt_now = ev_time (); 1103 ev_rt_now = ev_time ();
1078 1104
1079 if (expect_false (mn_now > rt_now || mn_now < rt_now - MAX_BLOCKTIME - MIN_TIMEJUMP)) 1105 if (expect_false (mn_now > ev_rt_now || mn_now < ev_rt_now - MAX_BLOCKTIME - MIN_TIMEJUMP))
1080 { 1106 {
1081 periodics_reschedule (EV_A); 1107 periodics_reschedule (EV_A);
1082 1108
1083 /* adjust timers. this is easy, as the offset is the same for all */ 1109 /* adjust timers. this is easy, as the offset is the same for all */
1084 for (i = 0; i < timercnt; ++i) 1110 for (i = 0; i < timercnt; ++i)
1085 ((WT)timers [i])->at += rt_now - mn_now; 1111 ((WT)timers [i])->at += ev_rt_now - mn_now;
1086 } 1112 }
1087 1113
1088 mn_now = rt_now; 1114 mn_now = ev_rt_now;
1089 } 1115 }
1090} 1116}
1091 1117
1092void 1118void
1093ev_ref (EV_P) 1119ev_ref (EV_P)
… …
1133 if (expect_true (have_monotonic)) 1159 if (expect_true (have_monotonic))
1134 time_update_monotonic (EV_A); 1160 time_update_monotonic (EV_A);
1135 else 1161 else
1136#endif 1162#endif
1137 { 1163 {
1138 rt_now = ev_time (); 1164 ev_rt_now = ev_time ();
1139 mn_now = rt_now; 1165 mn_now = ev_rt_now;
1140 } 1166 }
1141 1167
1142 if (flags & EVLOOP_NONBLOCK || idlecnt) 1168 if (flags & EVLOOP_NONBLOCK || idlecnt)
1143 block = 0.; 1169 block = 0.;
1144 else 1170 else
… …
1151 if (block > to) block = to; 1177 if (block > to) block = to;
1152 } 1178 }
1153 1179
1154 if (periodiccnt) 1180 if (periodiccnt)
1155 { 1181 {
1156 ev_tstamp to = ((WT)periodics [0])->at - rt_now + method_fudge; 1182 ev_tstamp to = ((WT)periodics [0])->at - ev_rt_now + method_fudge;
1157 if (block > to) block = to; 1183 if (block > to) block = to;
1158 } 1184 }
1159 1185
1160 if (block < 0.) block = 0.; 1186 if (block < 0.) block = 0.;
1161 } 1187 }
1162 1188
1163 method_poll (EV_A_ block); 1189 method_poll (EV_A_ block);
1164 1190
1165 /* update rt_now, do magic */ 1191 /* update ev_rt_now, do magic */
1166 time_update (EV_A); 1192 time_update (EV_A);
1167 1193
1168 /* queue pending timers and reschedule them */ 1194 /* queue pending timers and reschedule them */
1169 timers_reify (EV_A); /* relative timers called last */ 1195 timers_reify (EV_A); /* relative timers called last */
1170 periodics_reify (EV_A); /* absolute timers called first */ 1196 periodics_reify (EV_A); /* absolute timers called first */
… …
1316ev_timer_again (EV_P_ struct ev_timer *w) 1342ev_timer_again (EV_P_ struct ev_timer *w)
1317{ 1343{
1318 if (ev_is_active (w)) 1344 if (ev_is_active (w))
1319 { 1345 {
1320 if (w->repeat) 1346 if (w->repeat)
1321 {
1322 ((WT)w)->at = mn_now + w->repeat;
1323 downheap ((WT *)timers, timercnt, ((W)w)->active - 1); 1347 adjustheap ((WT *)timers, timercnt, ((W)w)->active - 1, mn_now + w->repeat);
1324 }
1325 else 1348 else
1326 ev_timer_stop (EV_A_ w); 1349 ev_timer_stop (EV_A_ w);
1327 } 1350 }
1328 else if (w->repeat) 1351 else if (w->repeat)
1329 ev_timer_start (EV_A_ w); 1352 ev_timer_start (EV_A_ w);
… …
1334{ 1357{
1335 if (ev_is_active (w)) 1358 if (ev_is_active (w))
1336 return; 1359 return;
1337 1360
1338 if (w->reschedule_cb) 1361 if (w->reschedule_cb)
1339 ((WT)w)->at = w->reschedule_cb (w, rt_now); 1362 ((WT)w)->at = w->reschedule_cb (w, ev_rt_now);
1340 else if (w->interval) 1363 else if (w->interval)
1341 { 1364 {
1342 assert (("ev_periodic_start called with negative interval value", w->interval >= 0.)); 1365 assert (("ev_periodic_start called with negative interval value", w->interval >= 0.));
1343 /* this formula differs from the one in periodic_reify because we do not always round up */ 1366 /* this formula differs from the one in periodic_reify because we do not always round up */
1344 ((WT)w)->at += ceil ((rt_now - ((WT)w)->at) / w->interval) * w->interval; 1367 ((WT)w)->at += ceil ((ev_rt_now - ((WT)w)->at) / w->interval) * w->interval;
1345 } 1368 }
1346 1369
1347 ev_start (EV_A_ (W)w, ++periodiccnt); 1370 ev_start (EV_A_ (W)w, ++periodiccnt);
1348 array_needsize (struct ev_periodic *, periodics, periodicmax, periodiccnt, (void)); 1371 array_needsize (struct ev_periodic *, periodics, periodicmax, periodiccnt, (void));
1349 periodics [periodiccnt - 1] = w; 1372 periodics [periodiccnt - 1] = w;
… …
1371} 1394}
1372 1395
1373void 1396void
1374ev_periodic_again (EV_P_ struct ev_periodic *w) 1397ev_periodic_again (EV_P_ struct ev_periodic *w)
1375{ 1398{
1399 /* TODO: use adjustheap and recalculation */
1376 ev_periodic_stop (EV_A_ w); 1400 ev_periodic_stop (EV_A_ w);
1377 ev_periodic_start (EV_A_ w); 1401 ev_periodic_start (EV_A_ w);
1378} 1402}
1379 1403
1380void 1404void
… …
1559 else 1583 else
1560 { 1584 {
1561 once->cb = cb; 1585 once->cb = cb;
1562 once->arg = arg; 1586 once->arg = arg;
1563 1587
1564 ev_watcher_init (&once->io, once_cb_io); 1588 ev_init (&once->io, once_cb_io);
1565 if (fd >= 0) 1589 if (fd >= 0)
1566 { 1590 {
1567 ev_io_set (&once->io, fd, events); 1591 ev_io_set (&once->io, fd, events);
1568 ev_io_start (EV_A_ &once->io); 1592 ev_io_start (EV_A_ &once->io);
1569 } 1593 }
1570 1594
1571 ev_watcher_init (&once->to, once_cb_to); 1595 ev_init (&once->to, once_cb_to);
1572 if (timeout >= 0.) 1596 if (timeout >= 0.)
1573 { 1597 {
1574 ev_timer_set (&once->to, timeout, 0.); 1598 ev_timer_set (&once->to, timeout, 0.);
1575 ev_timer_start (EV_A_ &once->to); 1599 ev_timer_start (EV_A_ &once->to);
1576 } 1600 }
1577 } 1601 }
1578} 1602}
1579 1603
1604#ifdef __cplusplus
1605}
1606#endif
1607

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