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Comparing libev/ev.c (file contents):
Revision 1.141 by root, Mon Nov 26 20:33:58 2007 UTC vs.
Revision 1.157 by root, Wed Nov 28 20:58:32 2007 UTC

… …
94# else 94# else
95# define EV_USE_PORT 0 95# define EV_USE_PORT 0
96# endif 96# endif
97# endif 97# endif
98 98
99# ifndef EV_USE_INOTIFY
100# if HAVE_INOTIFY_INIT && HAVE_SYS_INOTIFY_H
101# define EV_USE_INOTIFY 1
102# else
103# define EV_USE_INOTIFY 0
104# endif
105# endif
106
99#endif 107#endif
100 108
101#include <math.h> 109#include <math.h>
102#include <stdlib.h> 110#include <stdlib.h>
103#include <fcntl.h> 111#include <fcntl.h>
… …
109#include <errno.h> 117#include <errno.h>
110#include <sys/types.h> 118#include <sys/types.h>
111#include <time.h> 119#include <time.h>
112 120
113#include <signal.h> 121#include <signal.h>
122
123#ifdef EV_H
124# include EV_H
125#else
126# include "ev.h"
127#endif
114 128
115#ifndef _WIN32 129#ifndef _WIN32
116# include <sys/time.h> 130# include <sys/time.h>
117# include <sys/wait.h> 131# include <sys/wait.h>
118# include <unistd.h> 132# include <unistd.h>
… …
156 170
157#ifndef EV_USE_PORT 171#ifndef EV_USE_PORT
158# define EV_USE_PORT 0 172# define EV_USE_PORT 0
159#endif 173#endif
160 174
175#ifndef EV_USE_INOTIFY
176# define EV_USE_INOTIFY 0
177#endif
178
179#ifndef EV_PID_HASHSIZE
180# if EV_MINIMAL
181# define EV_PID_HASHSIZE 1
182# else
183# define EV_PID_HASHSIZE 16
184# endif
185#endif
186
187#ifndef EV_INOTIFY_HASHSIZE
188# if EV_MINIMAL
189# define EV_INOTIFY_HASHSIZE 1
190# else
191# define EV_INOTIFY_HASHSIZE 16
192# endif
193#endif
194
161/**/ 195/**/
162 196
163#ifndef CLOCK_MONOTONIC 197#ifndef CLOCK_MONOTONIC
164# undef EV_USE_MONOTONIC 198# undef EV_USE_MONOTONIC
165# define EV_USE_MONOTONIC 0 199# define EV_USE_MONOTONIC 0
… …
172 206
173#if EV_SELECT_IS_WINSOCKET 207#if EV_SELECT_IS_WINSOCKET
174# include <winsock.h> 208# include <winsock.h>
175#endif 209#endif
176 210
211#if !EV_STAT_ENABLE
212# define EV_USE_INOTIFY 0
213#endif
214
215#if EV_USE_INOTIFY
216# include <sys/inotify.h>
217#endif
218
177/**/ 219/**/
178 220
179#define MIN_TIMEJUMP 1. /* minimum timejump that gets detected (if monotonic clock available) */ 221#define MIN_TIMEJUMP 1. /* minimum timejump that gets detected (if monotonic clock available) */
180#define MAX_BLOCKTIME 59.743 /* never wait longer than this time (to detect time jumps) */ 222#define MAX_BLOCKTIME 59.743 /* never wait longer than this time (to detect time jumps) */
181#define PID_HASHSIZE 16 /* size of pid hash table, must be power of two */
182/*#define CLEANUP_INTERVAL (MAX_BLOCKTIME * 5.) /* how often to try to free memory and re-check fds */ 223/*#define CLEANUP_INTERVAL (MAX_BLOCKTIME * 5.) /* how often to try to free memory and re-check fds */
183
184#ifdef EV_H
185# include EV_H
186#else
187# include "ev.h"
188#endif
189 224
190#if __GNUC__ >= 3 225#if __GNUC__ >= 3
191# define expect(expr,value) __builtin_expect ((expr),(value)) 226# define expect(expr,value) __builtin_expect ((expr),(value))
192# define inline_size static inline /* inline for codesize */ 227# define inline_size static inline /* inline for codesize */
193# if EV_MINIMAL 228# if EV_MINIMAL
… …
198# define inline_speed static inline 233# define inline_speed static inline
199# endif 234# endif
200#else 235#else
201# define expect(expr,value) (expr) 236# define expect(expr,value) (expr)
202# define inline_speed static 237# define inline_speed static
203# define inline_minimal static 238# define inline_size static
204# define noinline 239# define noinline
205#endif 240#endif
206 241
207#define expect_false(expr) expect ((expr) != 0, 0) 242#define expect_false(expr) expect ((expr) != 0, 0)
208#define expect_true(expr) expect ((expr) != 0, 1) 243#define expect_true(expr) expect ((expr) != 0, 1)
… …
254ev_set_allocator (void *(*cb)(void *ptr, long size)) 289ev_set_allocator (void *(*cb)(void *ptr, long size))
255{ 290{
256 alloc = cb; 291 alloc = cb;
257} 292}
258 293
259static void * 294inline_speed void *
260ev_realloc (void *ptr, long size) 295ev_realloc (void *ptr, long size)
261{ 296{
262 ptr = alloc ? alloc (ptr, size) : realloc (ptr, size); 297 ptr = alloc ? alloc (ptr, size) : realloc (ptr, size);
263 298
264 if (!ptr && size) 299 if (!ptr && size)
… …
288typedef struct 323typedef struct
289{ 324{
290 W w; 325 W w;
291 int events; 326 int events;
292} ANPENDING; 327} ANPENDING;
328
329#if EV_USE_INOTIFY
330typedef struct
331{
332 WL head;
333} ANFS;
334#endif
293 335
294#if EV_MULTIPLICITY 336#if EV_MULTIPLICITY
295 337
296 struct ev_loop 338 struct ev_loop
297 { 339 {
… …
547static void noinline 589static void noinline
548fd_rearm_all (EV_P) 590fd_rearm_all (EV_P)
549{ 591{
550 int fd; 592 int fd;
551 593
552 /* this should be highly optimised to not do anything but set a flag */
553 for (fd = 0; fd < anfdmax; ++fd) 594 for (fd = 0; fd < anfdmax; ++fd)
554 if (anfds [fd].events) 595 if (anfds [fd].events)
555 { 596 {
556 anfds [fd].events = 0; 597 anfds [fd].events = 0;
557 fd_change (EV_A_ fd); 598 fd_change (EV_A_ fd);
… …
709 ev_unref (EV_A); /* child watcher should not keep loop alive */ 750 ev_unref (EV_A); /* child watcher should not keep loop alive */
710} 751}
711 752
712/*****************************************************************************/ 753/*****************************************************************************/
713 754
714static ev_child *childs [PID_HASHSIZE]; 755static ev_child *childs [EV_PID_HASHSIZE];
715 756
716#ifndef _WIN32 757#ifndef _WIN32
717 758
718static ev_signal childev; 759static ev_signal childev;
719
720#ifndef WCONTINUED
721# define WCONTINUED 0
722#endif
723 760
724void inline_speed 761void inline_speed
725child_reap (EV_P_ ev_signal *sw, int chain, int pid, int status) 762child_reap (EV_P_ ev_signal *sw, int chain, int pid, int status)
726{ 763{
727 ev_child *w; 764 ev_child *w;
728 765
729 for (w = (ev_child *)childs [chain & (PID_HASHSIZE - 1)]; w; w = (ev_child *)((WL)w)->next) 766 for (w = (ev_child *)childs [chain & (EV_PID_HASHSIZE - 1)]; w; w = (ev_child *)((WL)w)->next)
730 if (w->pid == pid || !w->pid) 767 if (w->pid == pid || !w->pid)
731 { 768 {
732 ev_priority (w) = ev_priority (sw); /* need to do it *now* */ 769 ev_priority (w) = ev_priority (sw); /* need to do it *now* */
733 w->rpid = pid; 770 w->rpid = pid;
734 w->rstatus = status; 771 w->rstatus = status;
735 ev_feed_event (EV_A_ (W)w, EV_CHILD); 772 ev_feed_event (EV_A_ (W)w, EV_CHILD);
736 } 773 }
737} 774}
738 775
776#ifndef WCONTINUED
777# define WCONTINUED 0
778#endif
779
739static void 780static void
740childcb (EV_P_ ev_signal *sw, int revents) 781childcb (EV_P_ ev_signal *sw, int revents)
741{ 782{
742 int pid, status; 783 int pid, status;
743 784
785 /* some systems define WCONTINUED but then fail to support it (linux 2.4) */
744 if (0 < (pid = waitpid (-1, &status, WNOHANG | WUNTRACED | WCONTINUED))) 786 if (0 >= (pid = waitpid (-1, &status, WNOHANG | WUNTRACED | WCONTINUED)))
745 { 787 if (!WCONTINUED
788 || errno != EINVAL
789 || 0 >= (pid = waitpid (-1, &status, WNOHANG | WUNTRACED)))
790 return;
791
746 /* make sure we are called again until all childs have been reaped */ 792 /* make sure we are called again until all childs have been reaped */
747 /* we need to do it this way so that the callback gets called before we continue */ 793 /* we need to do it this way so that the callback gets called before we continue */
748 ev_feed_event (EV_A_ (W)sw, EV_SIGNAL); 794 ev_feed_event (EV_A_ (W)sw, EV_SIGNAL);
749 795
750 child_reap (EV_A_ sw, pid, pid, status); 796 child_reap (EV_A_ sw, pid, pid, status);
797 if (EV_PID_HASHSIZE > 1)
751 child_reap (EV_A_ sw, 0, pid, status); /* this might trigger a watcher twice, but feed_event catches that */ 798 child_reap (EV_A_ sw, 0, pid, status); /* this might trigger a watcher twice, but feed_event catches that */
752 }
753} 799}
754 800
755#endif 801#endif
756 802
757/*****************************************************************************/ 803/*****************************************************************************/
… …
840ev_backend (EV_P) 886ev_backend (EV_P)
841{ 887{
842 return backend; 888 return backend;
843} 889}
844 890
845static void 891static void noinline
846loop_init (EV_P_ unsigned int flags) 892loop_init (EV_P_ unsigned int flags)
847{ 893{
848 if (!backend) 894 if (!backend)
849 { 895 {
850#if EV_USE_MONOTONIC 896#if EV_USE_MONOTONIC
… …
867 913
868 if (!(flags & 0x0000ffffUL)) 914 if (!(flags & 0x0000ffffUL))
869 flags |= ev_recommended_backends (); 915 flags |= ev_recommended_backends ();
870 916
871 backend = 0; 917 backend = 0;
918 backend_fd = -1;
919#if EV_USE_INOTIFY
920 fs_fd = -2;
921#endif
922
872#if EV_USE_PORT 923#if EV_USE_PORT
873 if (!backend && (flags & EVBACKEND_PORT )) backend = port_init (EV_A_ flags); 924 if (!backend && (flags & EVBACKEND_PORT )) backend = port_init (EV_A_ flags);
874#endif 925#endif
875#if EV_USE_KQUEUE 926#if EV_USE_KQUEUE
876 if (!backend && (flags & EVBACKEND_KQUEUE)) backend = kqueue_init (EV_A_ flags); 927 if (!backend && (flags & EVBACKEND_KQUEUE)) backend = kqueue_init (EV_A_ flags);
… …
888 ev_init (&sigev, sigcb); 939 ev_init (&sigev, sigcb);
889 ev_set_priority (&sigev, EV_MAXPRI); 940 ev_set_priority (&sigev, EV_MAXPRI);
890 } 941 }
891} 942}
892 943
893static void 944static void noinline
894loop_destroy (EV_P) 945loop_destroy (EV_P)
895{ 946{
896 int i; 947 int i;
948
949#if EV_USE_INOTIFY
950 if (fs_fd >= 0)
951 close (fs_fd);
952#endif
953
954 if (backend_fd >= 0)
955 close (backend_fd);
897 956
898#if EV_USE_PORT 957#if EV_USE_PORT
899 if (backend == EVBACKEND_PORT ) port_destroy (EV_A); 958 if (backend == EVBACKEND_PORT ) port_destroy (EV_A);
900#endif 959#endif
901#if EV_USE_KQUEUE 960#if EV_USE_KQUEUE
… …
925 array_free (check, EMPTY0); 984 array_free (check, EMPTY0);
926 985
927 backend = 0; 986 backend = 0;
928} 987}
929 988
930static void 989void inline_size infy_fork (EV_P);
990
991void inline_size
931loop_fork (EV_P) 992loop_fork (EV_P)
932{ 993{
933#if EV_USE_PORT 994#if EV_USE_PORT
934 if (backend == EVBACKEND_PORT ) port_fork (EV_A); 995 if (backend == EVBACKEND_PORT ) port_fork (EV_A);
935#endif 996#endif
936#if EV_USE_KQUEUE 997#if EV_USE_KQUEUE
937 if (backend == EVBACKEND_KQUEUE) kqueue_fork (EV_A); 998 if (backend == EVBACKEND_KQUEUE) kqueue_fork (EV_A);
938#endif 999#endif
939#if EV_USE_EPOLL 1000#if EV_USE_EPOLL
940 if (backend == EVBACKEND_EPOLL ) epoll_fork (EV_A); 1001 if (backend == EVBACKEND_EPOLL ) epoll_fork (EV_A);
1002#endif
1003#if EV_USE_INOTIFY
1004 infy_fork (EV_A);
941#endif 1005#endif
942 1006
943 if (ev_is_active (&sigev)) 1007 if (ev_is_active (&sigev))
944 { 1008 {
945 /* default loop */ 1009 /* default loop */
… …
1085 { 1149 {
1086 ANPENDING *p = pendings [pri] + --pendingcnt [pri]; 1150 ANPENDING *p = pendings [pri] + --pendingcnt [pri];
1087 1151
1088 if (expect_true (p->w)) 1152 if (expect_true (p->w))
1089 { 1153 {
1090 assert (("non-pending watcher on pending list", p->w->pending)); 1154 /*assert (("non-pending watcher on pending list", p->w->pending));*/
1091 1155
1092 p->w->pending = 0; 1156 p->w->pending = 0;
1093 EV_CB_INVOKE (p->w, p->events); 1157 EV_CB_INVOKE (p->w, p->events);
1094 } 1158 }
1095 } 1159 }
… …
1100{ 1164{
1101 while (timercnt && ((WT)timers [0])->at <= mn_now) 1165 while (timercnt && ((WT)timers [0])->at <= mn_now)
1102 { 1166 {
1103 ev_timer *w = timers [0]; 1167 ev_timer *w = timers [0];
1104 1168
1105 assert (("inactive timer on timer heap detected", ev_is_active (w))); 1169 /*assert (("inactive timer on timer heap detected", ev_is_active (w)));*/
1106 1170
1107 /* first reschedule or stop timer */ 1171 /* first reschedule or stop timer */
1108 if (w->repeat) 1172 if (w->repeat)
1109 { 1173 {
1110 assert (("negative ev_timer repeat value found while processing timers", w->repeat > 0.)); 1174 assert (("negative ev_timer repeat value found while processing timers", w->repeat > 0.));
… …
1128{ 1192{
1129 while (periodiccnt && ((WT)periodics [0])->at <= ev_rt_now) 1193 while (periodiccnt && ((WT)periodics [0])->at <= ev_rt_now)
1130 { 1194 {
1131 ev_periodic *w = periodics [0]; 1195 ev_periodic *w = periodics [0];
1132 1196
1133 assert (("inactive timer on periodic heap detected", ev_is_active (w))); 1197 /*assert (("inactive timer on periodic heap detected", ev_is_active (w)));*/
1134 1198
1135 /* first reschedule or stop timer */ 1199 /* first reschedule or stop timer */
1136 if (w->reschedule_cb) 1200 if (w->reschedule_cb)
1137 { 1201 {
1138 ((WT)w)->at = w->reschedule_cb (w, ev_rt_now + 0.0001); 1202 ((WT)w)->at = w->reschedule_cb (w, ev_rt_now + 0.0001);
… …
1205 ev_tstamp odiff = rtmn_diff; 1269 ev_tstamp odiff = rtmn_diff;
1206 1270
1207 /* loop a few times, before making important decisions. 1271 /* loop a few times, before making important decisions.
1208 * on the choice of "4": one iteration isn't enough, 1272 * on the choice of "4": one iteration isn't enough,
1209 * in case we get preempted during the calls to 1273 * in case we get preempted during the calls to
1210 * ev_time and get_clock. a second call is almost guarenteed 1274 * ev_time and get_clock. a second call is almost guaranteed
1211 * to succeed in that case, though. and looping a few more times 1275 * to succeed in that case, though. and looping a few more times
1212 * doesn't hurt either as we only do this on time-jumps or 1276 * doesn't hurt either as we only do this on time-jumps or
1213 * in the unlikely event of getting preempted here. 1277 * in the unlikely event of having been preempted here.
1214 */ 1278 */
1215 for (i = 4; --i; ) 1279 for (i = 4; --i; )
1216 { 1280 {
1217 rtmn_diff = ev_rt_now - mn_now; 1281 rtmn_diff = ev_rt_now - mn_now;
1218 1282
… …
1240 { 1304 {
1241#if EV_PERIODIC_ENABLE 1305#if EV_PERIODIC_ENABLE
1242 periodics_reschedule (EV_A); 1306 periodics_reschedule (EV_A);
1243#endif 1307#endif
1244 1308
1245 /* adjust timers. this is easy, as the offset is the same for all */ 1309 /* adjust timers. this is easy, as the offset is the same for all of them */
1246 for (i = 0; i < timercnt; ++i) 1310 for (i = 0; i < timercnt; ++i)
1247 ((WT)timers [i])->at += ev_rt_now - mn_now; 1311 ((WT)timers [i])->at += ev_rt_now - mn_now;
1248 } 1312 }
1249 1313
1250 mn_now = ev_rt_now; 1314 mn_now = ev_rt_now;
… …
1272 ? EVUNLOOP_ONE 1336 ? EVUNLOOP_ONE
1273 : EVUNLOOP_CANCEL; 1337 : EVUNLOOP_CANCEL;
1274 1338
1275 while (activecnt) 1339 while (activecnt)
1276 { 1340 {
1341#if EV_FORK_ENABLE
1342 /* we might have forked, so queue fork handlers */
1343 if (expect_false (postfork))
1344 if (forkcnt)
1345 {
1346 queue_events (EV_A_ (W *)forks, forkcnt, EV_FORK);
1347 call_pending (EV_A);
1348 }
1349#endif
1350
1277 /* queue check watchers (and execute them) */ 1351 /* queue check watchers (and execute them) */
1278 if (expect_false (preparecnt)) 1352 if (expect_false (preparecnt))
1279 { 1353 {
1280 queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE); 1354 queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE);
1281 call_pending (EV_A); 1355 call_pending (EV_A);
… …
1288 /* update fd-related kernel structures */ 1362 /* update fd-related kernel structures */
1289 fd_reify (EV_A); 1363 fd_reify (EV_A);
1290 1364
1291 /* calculate blocking time */ 1365 /* calculate blocking time */
1292 { 1366 {
1293 double block; 1367 ev_tstamp block;
1294 1368
1295 if (flags & EVLOOP_NONBLOCK || idlecnt) 1369 if (flags & EVLOOP_NONBLOCK || idlecnt)
1296 block = 0.; /* do not block at all */ 1370 block = 0.; /* do not block at all */
1297 else 1371 else
1298 { 1372 {
… …
1460 ev_start (EV_A_ (W)w, ++timercnt); 1534 ev_start (EV_A_ (W)w, ++timercnt);
1461 array_needsize (ev_timer *, timers, timermax, timercnt, EMPTY2); 1535 array_needsize (ev_timer *, timers, timermax, timercnt, EMPTY2);
1462 timers [timercnt - 1] = w; 1536 timers [timercnt - 1] = w;
1463 upheap ((WT *)timers, timercnt - 1); 1537 upheap ((WT *)timers, timercnt - 1);
1464 1538
1465 assert (("internal timer heap corruption", timers [((W)w)->active - 1] == w)); 1539 /*assert (("internal timer heap corruption", timers [((W)w)->active - 1] == w));*/
1466} 1540}
1467 1541
1468void 1542void
1469ev_timer_stop (EV_P_ ev_timer *w) 1543ev_timer_stop (EV_P_ ev_timer *w)
1470{ 1544{
… …
1472 if (expect_false (!ev_is_active (w))) 1546 if (expect_false (!ev_is_active (w)))
1473 return; 1547 return;
1474 1548
1475 assert (("internal timer heap corruption", timers [((W)w)->active - 1] == w)); 1549 assert (("internal timer heap corruption", timers [((W)w)->active - 1] == w));
1476 1550
1551 {
1552 int active = ((W)w)->active;
1553
1477 if (expect_true (((W)w)->active < timercnt--)) 1554 if (expect_true (--active < --timercnt))
1478 { 1555 {
1479 timers [((W)w)->active - 1] = timers [timercnt]; 1556 timers [active] = timers [timercnt];
1480 adjustheap ((WT *)timers, timercnt, ((W)w)->active - 1); 1557 adjustheap ((WT *)timers, timercnt, active);
1481 } 1558 }
1559 }
1482 1560
1483 ((WT)w)->at -= mn_now; 1561 ((WT)w)->at -= mn_now;
1484 1562
1485 ev_stop (EV_A_ (W)w); 1563 ev_stop (EV_A_ (W)w);
1486} 1564}
… …
1524 ev_start (EV_A_ (W)w, ++periodiccnt); 1602 ev_start (EV_A_ (W)w, ++periodiccnt);
1525 array_needsize (ev_periodic *, periodics, periodicmax, periodiccnt, EMPTY2); 1603 array_needsize (ev_periodic *, periodics, periodicmax, periodiccnt, EMPTY2);
1526 periodics [periodiccnt - 1] = w; 1604 periodics [periodiccnt - 1] = w;
1527 upheap ((WT *)periodics, periodiccnt - 1); 1605 upheap ((WT *)periodics, periodiccnt - 1);
1528 1606
1529 assert (("internal periodic heap corruption", periodics [((W)w)->active - 1] == w)); 1607 /*assert (("internal periodic heap corruption", periodics [((W)w)->active - 1] == w));*/
1530} 1608}
1531 1609
1532void 1610void
1533ev_periodic_stop (EV_P_ ev_periodic *w) 1611ev_periodic_stop (EV_P_ ev_periodic *w)
1534{ 1612{
… …
1536 if (expect_false (!ev_is_active (w))) 1614 if (expect_false (!ev_is_active (w)))
1537 return; 1615 return;
1538 1616
1539 assert (("internal periodic heap corruption", periodics [((W)w)->active - 1] == w)); 1617 assert (("internal periodic heap corruption", periodics [((W)w)->active - 1] == w));
1540 1618
1619 {
1620 int active = ((W)w)->active;
1621
1541 if (expect_true (((W)w)->active < periodiccnt--)) 1622 if (expect_true (--active < --periodiccnt))
1542 { 1623 {
1543 periodics [((W)w)->active - 1] = periodics [periodiccnt]; 1624 periodics [active] = periodics [periodiccnt];
1544 adjustheap ((WT *)periodics, periodiccnt, ((W)w)->active - 1); 1625 adjustheap ((WT *)periodics, periodiccnt, active);
1545 } 1626 }
1627 }
1546 1628
1547 ev_stop (EV_A_ (W)w); 1629 ev_stop (EV_A_ (W)w);
1548} 1630}
1549 1631
1550void 1632void
… …
1553 /* TODO: use adjustheap and recalculation */ 1635 /* TODO: use adjustheap and recalculation */
1554 ev_periodic_stop (EV_A_ w); 1636 ev_periodic_stop (EV_A_ w);
1555 ev_periodic_start (EV_A_ w); 1637 ev_periodic_start (EV_A_ w);
1556} 1638}
1557#endif 1639#endif
1558
1559void
1560ev_idle_start (EV_P_ ev_idle *w)
1561{
1562 if (expect_false (ev_is_active (w)))
1563 return;
1564
1565 ev_start (EV_A_ (W)w, ++idlecnt);
1566 array_needsize (ev_idle *, idles, idlemax, idlecnt, EMPTY2);
1567 idles [idlecnt - 1] = w;
1568}
1569
1570void
1571ev_idle_stop (EV_P_ ev_idle *w)
1572{
1573 ev_clear_pending (EV_A_ (W)w);
1574 if (expect_false (!ev_is_active (w)))
1575 return;
1576
1577 {
1578 int active = ((W)w)->active;
1579 idles [active - 1] = idles [--idlecnt];
1580 ((W)idles [active - 1])->active = active;
1581 }
1582
1583 ev_stop (EV_A_ (W)w);
1584}
1585
1586void
1587ev_prepare_start (EV_P_ ev_prepare *w)
1588{
1589 if (expect_false (ev_is_active (w)))
1590 return;
1591
1592 ev_start (EV_A_ (W)w, ++preparecnt);
1593 array_needsize (ev_prepare *, prepares, preparemax, preparecnt, EMPTY2);
1594 prepares [preparecnt - 1] = w;
1595}
1596
1597void
1598ev_prepare_stop (EV_P_ ev_prepare *w)
1599{
1600 ev_clear_pending (EV_A_ (W)w);
1601 if (expect_false (!ev_is_active (w)))
1602 return;
1603
1604 {
1605 int active = ((W)w)->active;
1606 prepares [active - 1] = prepares [--preparecnt];
1607 ((W)prepares [active - 1])->active = active;
1608 }
1609
1610 ev_stop (EV_A_ (W)w);
1611}
1612
1613void
1614ev_check_start (EV_P_ ev_check *w)
1615{
1616 if (expect_false (ev_is_active (w)))
1617 return;
1618
1619 ev_start (EV_A_ (W)w, ++checkcnt);
1620 array_needsize (ev_check *, checks, checkmax, checkcnt, EMPTY2);
1621 checks [checkcnt - 1] = w;
1622}
1623
1624void
1625ev_check_stop (EV_P_ ev_check *w)
1626{
1627 ev_clear_pending (EV_A_ (W)w);
1628 if (expect_false (!ev_is_active (w)))
1629 return;
1630
1631 {
1632 int active = ((W)w)->active;
1633 checks [active - 1] = checks [--checkcnt];
1634 ((W)checks [active - 1])->active = active;
1635 }
1636
1637 ev_stop (EV_A_ (W)w);
1638}
1639 1640
1640#ifndef SA_RESTART 1641#ifndef SA_RESTART
1641# define SA_RESTART 0 1642# define SA_RESTART 0
1642#endif 1643#endif
1643 1644
… …
1692#endif 1693#endif
1693 if (expect_false (ev_is_active (w))) 1694 if (expect_false (ev_is_active (w)))
1694 return; 1695 return;
1695 1696
1696 ev_start (EV_A_ (W)w, 1); 1697 ev_start (EV_A_ (W)w, 1);
1697 wlist_add ((WL *)&childs [w->pid & (PID_HASHSIZE - 1)], (WL)w); 1698 wlist_add ((WL *)&childs [w->pid & (EV_PID_HASHSIZE - 1)], (WL)w);
1698} 1699}
1699 1700
1700void 1701void
1701ev_child_stop (EV_P_ ev_child *w) 1702ev_child_stop (EV_P_ ev_child *w)
1702{ 1703{
1703 ev_clear_pending (EV_A_ (W)w); 1704 ev_clear_pending (EV_A_ (W)w);
1704 if (expect_false (!ev_is_active (w))) 1705 if (expect_false (!ev_is_active (w)))
1705 return; 1706 return;
1706 1707
1707 wlist_del ((WL *)&childs [w->pid & (PID_HASHSIZE - 1)], (WL)w); 1708 wlist_del ((WL *)&childs [w->pid & (EV_PID_HASHSIZE - 1)], (WL)w);
1709 ev_stop (EV_A_ (W)w);
1710}
1711
1712#if EV_STAT_ENABLE
1713
1714# ifdef _WIN32
1715# undef lstat
1716# define lstat(a,b) _stati64 (a,b)
1717# endif
1718
1719#define DEF_STAT_INTERVAL 5.0074891
1720#define MIN_STAT_INTERVAL 0.1074891
1721
1722static void noinline stat_timer_cb (EV_P_ ev_timer *w_, int revents);
1723
1724#if EV_USE_INOTIFY
1725# define EV_INOTIFY_BUFSIZE 8192
1726
1727static void noinline
1728infy_add (EV_P_ ev_stat *w)
1729{
1730 w->wd = inotify_add_watch (fs_fd, w->path, IN_ATTRIB | IN_DELETE_SELF | IN_MOVE_SELF | IN_MODIFY | IN_DONT_FOLLOW | IN_MASK_ADD);
1731
1732 if (w->wd < 0)
1733 {
1734 ev_timer_start (EV_A_ &w->timer); /* this is not race-free, so we still need to recheck periodically */
1735
1736 /* monitor some parent directory for speedup hints */
1737 if ((errno == ENOENT || errno == EACCES) && strlen (w->path) < 4096)
1738 {
1739 char path [4096];
1740 strcpy (path, w->path);
1741
1742 do
1743 {
1744 int mask = IN_MASK_ADD | IN_DELETE_SELF | IN_MOVE_SELF
1745 | (errno == EACCES ? IN_ATTRIB : IN_CREATE | IN_MOVED_TO);
1746
1747 char *pend = strrchr (path, '/');
1748
1749 if (!pend)
1750 break; /* whoops, no '/', complain to your admin */
1751
1752 *pend = 0;
1753 w->wd = inotify_add_watch (fs_fd, path, mask);
1754 }
1755 while (w->wd < 0 && (errno == ENOENT || errno == EACCES));
1756 }
1757 }
1758 else
1759 ev_timer_stop (EV_A_ &w->timer); /* we can watch this in a race-free way */
1760
1761 if (w->wd >= 0)
1762 wlist_add (&fs_hash [w->wd & (EV_INOTIFY_HASHSIZE - 1)].head, (WL)w);
1763}
1764
1765static void noinline
1766infy_del (EV_P_ ev_stat *w)
1767{
1768 int slot;
1769 int wd = w->wd;
1770
1771 if (wd < 0)
1772 return;
1773
1774 w->wd = -2;
1775 slot = wd & (EV_INOTIFY_HASHSIZE - 1);
1776 wlist_del (&fs_hash [slot].head, (WL)w);
1777
1778 /* remove this watcher, if others are watching it, they will rearm */
1779 inotify_rm_watch (fs_fd, wd);
1780}
1781
1782static void noinline
1783infy_wd (EV_P_ int slot, int wd, struct inotify_event *ev)
1784{
1785 if (slot < 0)
1786 /* overflow, need to check for all hahs slots */
1787 for (slot = 0; slot < EV_INOTIFY_HASHSIZE; ++slot)
1788 infy_wd (EV_A_ slot, wd, ev);
1789 else
1790 {
1791 WL w_;
1792
1793 for (w_ = fs_hash [slot & (EV_INOTIFY_HASHSIZE - 1)].head; w_; )
1794 {
1795 ev_stat *w = (ev_stat *)w_;
1796 w_ = w_->next; /* lets us remove this watcher and all before it */
1797
1798 if (w->wd == wd || wd == -1)
1799 {
1800 if (ev->mask & (IN_IGNORED | IN_UNMOUNT | IN_DELETE_SELF))
1801 {
1802 w->wd = -1;
1803 infy_add (EV_A_ w); /* re-add, no matter what */
1804 }
1805
1806 stat_timer_cb (EV_A_ &w->timer, 0);
1807 }
1808 }
1809 }
1810}
1811
1812static void
1813infy_cb (EV_P_ ev_io *w, int revents)
1814{
1815 char buf [EV_INOTIFY_BUFSIZE];
1816 struct inotify_event *ev = (struct inotify_event *)buf;
1817 int ofs;
1818 int len = read (fs_fd, buf, sizeof (buf));
1819
1820 for (ofs = 0; ofs < len; ofs += sizeof (struct inotify_event) + ev->len)
1821 infy_wd (EV_A_ ev->wd, ev->wd, ev);
1822}
1823
1824void inline_size
1825infy_init (EV_P)
1826{
1827 if (fs_fd != -2)
1828 return;
1829
1830 fs_fd = inotify_init ();
1831
1832 if (fs_fd >= 0)
1833 {
1834 ev_io_init (&fs_w, infy_cb, fs_fd, EV_READ);
1835 ev_set_priority (&fs_w, EV_MAXPRI);
1836 ev_io_start (EV_A_ &fs_w);
1837 }
1838}
1839
1840void inline_size
1841infy_fork (EV_P)
1842{
1843 int slot;
1844
1845 if (fs_fd < 0)
1846 return;
1847
1848 close (fs_fd);
1849 fs_fd = inotify_init ();
1850
1851 for (slot = 0; slot < EV_INOTIFY_HASHSIZE; ++slot)
1852 {
1853 WL w_ = fs_hash [slot].head;
1854 fs_hash [slot].head = 0;
1855
1856 while (w_)
1857 {
1858 ev_stat *w = (ev_stat *)w_;
1859 w_ = w_->next; /* lets us add this watcher */
1860
1861 w->wd = -1;
1862
1863 if (fs_fd >= 0)
1864 infy_add (EV_A_ w); /* re-add, no matter what */
1865 else
1866 ev_timer_start (EV_A_ &w->timer);
1867 }
1868
1869 }
1870}
1871
1872#endif
1873
1874void
1875ev_stat_stat (EV_P_ ev_stat *w)
1876{
1877 if (lstat (w->path, &w->attr) < 0)
1878 w->attr.st_nlink = 0;
1879 else if (!w->attr.st_nlink)
1880 w->attr.st_nlink = 1;
1881}
1882
1883static void noinline
1884stat_timer_cb (EV_P_ ev_timer *w_, int revents)
1885{
1886 ev_stat *w = (ev_stat *)(((char *)w_) - offsetof (ev_stat, timer));
1887
1888 /* we copy this here each the time so that */
1889 /* prev has the old value when the callback gets invoked */
1890 w->prev = w->attr;
1891 ev_stat_stat (EV_A_ w);
1892
1893 /* memcmp doesn't work on netbsd, they.... do stuff to their struct stat */
1894 if (
1895 w->prev.st_dev != w->attr.st_dev
1896 || w->prev.st_ino != w->attr.st_ino
1897 || w->prev.st_mode != w->attr.st_mode
1898 || w->prev.st_nlink != w->attr.st_nlink
1899 || w->prev.st_uid != w->attr.st_uid
1900 || w->prev.st_gid != w->attr.st_gid
1901 || w->prev.st_rdev != w->attr.st_rdev
1902 || w->prev.st_size != w->attr.st_size
1903 || w->prev.st_atime != w->attr.st_atime
1904 || w->prev.st_mtime != w->attr.st_mtime
1905 || w->prev.st_ctime != w->attr.st_ctime
1906 ) {
1907 #if EV_USE_INOTIFY
1908 infy_del (EV_A_ w);
1909 infy_add (EV_A_ w);
1910 ev_stat_stat (EV_A_ w); /* avoid race... */
1911 #endif
1912
1913 ev_feed_event (EV_A_ w, EV_STAT);
1914 }
1915}
1916
1917void
1918ev_stat_start (EV_P_ ev_stat *w)
1919{
1920 if (expect_false (ev_is_active (w)))
1921 return;
1922
1923 /* since we use memcmp, we need to clear any padding data etc. */
1924 memset (&w->prev, 0, sizeof (ev_statdata));
1925 memset (&w->attr, 0, sizeof (ev_statdata));
1926
1927 ev_stat_stat (EV_A_ w);
1928
1929 if (w->interval < MIN_STAT_INTERVAL)
1930 w->interval = w->interval ? MIN_STAT_INTERVAL : DEF_STAT_INTERVAL;
1931
1932 ev_timer_init (&w->timer, stat_timer_cb, w->interval, w->interval);
1933 ev_set_priority (&w->timer, ev_priority (w));
1934
1935#if EV_USE_INOTIFY
1936 infy_init (EV_A);
1937
1938 if (fs_fd >= 0)
1939 infy_add (EV_A_ w);
1940 else
1941#endif
1942 ev_timer_start (EV_A_ &w->timer);
1943
1944 ev_start (EV_A_ (W)w, 1);
1945}
1946
1947void
1948ev_stat_stop (EV_P_ ev_stat *w)
1949{
1950 ev_clear_pending (EV_A_ (W)w);
1951 if (expect_false (!ev_is_active (w)))
1952 return;
1953
1954#if EV_USE_INOTIFY
1955 infy_del (EV_A_ w);
1956#endif
1957 ev_timer_stop (EV_A_ &w->timer);
1958
1959 ev_stop (EV_A_ (W)w);
1960}
1961#endif
1962
1963void
1964ev_idle_start (EV_P_ ev_idle *w)
1965{
1966 if (expect_false (ev_is_active (w)))
1967 return;
1968
1969 ev_start (EV_A_ (W)w, ++idlecnt);
1970 array_needsize (ev_idle *, idles, idlemax, idlecnt, EMPTY2);
1971 idles [idlecnt - 1] = w;
1972}
1973
1974void
1975ev_idle_stop (EV_P_ ev_idle *w)
1976{
1977 ev_clear_pending (EV_A_ (W)w);
1978 if (expect_false (!ev_is_active (w)))
1979 return;
1980
1981 {
1982 int active = ((W)w)->active;
1983 idles [active - 1] = idles [--idlecnt];
1984 ((W)idles [active - 1])->active = active;
1985 }
1986
1987 ev_stop (EV_A_ (W)w);
1988}
1989
1990void
1991ev_prepare_start (EV_P_ ev_prepare *w)
1992{
1993 if (expect_false (ev_is_active (w)))
1994 return;
1995
1996 ev_start (EV_A_ (W)w, ++preparecnt);
1997 array_needsize (ev_prepare *, prepares, preparemax, preparecnt, EMPTY2);
1998 prepares [preparecnt - 1] = w;
1999}
2000
2001void
2002ev_prepare_stop (EV_P_ ev_prepare *w)
2003{
2004 ev_clear_pending (EV_A_ (W)w);
2005 if (expect_false (!ev_is_active (w)))
2006 return;
2007
2008 {
2009 int active = ((W)w)->active;
2010 prepares [active - 1] = prepares [--preparecnt];
2011 ((W)prepares [active - 1])->active = active;
2012 }
2013
2014 ev_stop (EV_A_ (W)w);
2015}
2016
2017void
2018ev_check_start (EV_P_ ev_check *w)
2019{
2020 if (expect_false (ev_is_active (w)))
2021 return;
2022
2023 ev_start (EV_A_ (W)w, ++checkcnt);
2024 array_needsize (ev_check *, checks, checkmax, checkcnt, EMPTY2);
2025 checks [checkcnt - 1] = w;
2026}
2027
2028void
2029ev_check_stop (EV_P_ ev_check *w)
2030{
2031 ev_clear_pending (EV_A_ (W)w);
2032 if (expect_false (!ev_is_active (w)))
2033 return;
2034
2035 {
2036 int active = ((W)w)->active;
2037 checks [active - 1] = checks [--checkcnt];
2038 ((W)checks [active - 1])->active = active;
2039 }
2040
1708 ev_stop (EV_A_ (W)w); 2041 ev_stop (EV_A_ (W)w);
1709} 2042}
1710 2043
1711#if EV_EMBED_ENABLE 2044#if EV_EMBED_ENABLE
1712void noinline 2045void noinline
… …
1755 2088
1756 ev_stop (EV_A_ (W)w); 2089 ev_stop (EV_A_ (W)w);
1757} 2090}
1758#endif 2091#endif
1759 2092
1760#if EV_STAT_ENABLE 2093#if EV_FORK_ENABLE
1761
1762# ifdef _WIN32
1763# define lstat(a,b) stat(a,b)
1764# endif
1765
1766void 2094void
1767ev_stat_stat (EV_P_ ev_stat *w)
1768{
1769 if (lstat (w->path, &w->attr) < 0)
1770 w->attr.st_nlink = 0;
1771 else if (!w->attr.st_nlink)
1772 w->attr.st_nlink = 1;
1773}
1774
1775static void
1776stat_timer_cb (EV_P_ ev_timer *w_, int revents)
1777{
1778 ev_stat *w = (ev_stat *)(((char *)w_) - offsetof (ev_stat, timer));
1779
1780 /* we copy this here each the time so that */
1781 /* prev has the old value when the callback gets invoked */
1782 w->prev = w->attr;
1783 ev_stat_stat (EV_A_ w);
1784
1785 if (memcmp (&w->prev, &w->attr, sizeof (ev_statdata)))
1786 ev_feed_event (EV_A_ w, EV_STAT);
1787}
1788
1789void
1790ev_stat_start (EV_P_ ev_stat *w) 2095ev_fork_start (EV_P_ ev_fork *w)
1791{ 2096{
1792 if (expect_false (ev_is_active (w))) 2097 if (expect_false (ev_is_active (w)))
1793 return; 2098 return;
1794 2099
1795 /* since we use memcmp, we need to clear any padding data etc. */
1796 memset (&w->prev, 0, sizeof (ev_statdata));
1797 memset (&w->attr, 0, sizeof (ev_statdata));
1798
1799 ev_stat_stat (EV_A_ w);
1800
1801 ev_timer_init (&w->timer, stat_timer_cb, w->interval, w->interval);
1802 ev_set_priority (&w->timer, ev_priority (w));
1803 ev_timer_start (EV_A_ &w->timer);
1804
1805 ev_start (EV_A_ (W)w, 1); 2100 ev_start (EV_A_ (W)w, ++forkcnt);
2101 array_needsize (ev_fork *, forks, forkmax, forkcnt, EMPTY2);
2102 forks [forkcnt - 1] = w;
1806} 2103}
1807 2104
1808void 2105void
1809ev_stat_stop (EV_P_ ev_stat *w) 2106ev_fork_stop (EV_P_ ev_fork *w)
1810{ 2107{
1811 ev_clear_pending (EV_A_ (W)w); 2108 ev_clear_pending (EV_A_ (W)w);
1812 if (expect_false (!ev_is_active (w))) 2109 if (expect_false (!ev_is_active (w)))
1813 return; 2110 return;
1814 2111
1815 ev_timer_stop (EV_A_ &w->timer); 2112 {
2113 int active = ((W)w)->active;
2114 forks [active - 1] = forks [--forkcnt];
2115 ((W)forks [active - 1])->active = active;
2116 }
1816 2117
1817 ev_stop (EV_A_ (W)w); 2118 ev_stop (EV_A_ (W)w);
1818} 2119}
1819#endif 2120#endif
1820 2121

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