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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 1.155 by root, Wed Nov 28 17:32:24 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 {
… …
709 ev_unref (EV_A); /* child watcher should not keep loop alive */ 751 ev_unref (EV_A); /* child watcher should not keep loop alive */
710} 752}
711 753
712/*****************************************************************************/ 754/*****************************************************************************/
713 755
714static ev_child *childs [PID_HASHSIZE]; 756static ev_child *childs [EV_PID_HASHSIZE];
715 757
716#ifndef _WIN32 758#ifndef _WIN32
717 759
718static ev_signal childev; 760static ev_signal childev;
719
720#ifndef WCONTINUED
721# define WCONTINUED 0
722#endif
723 761
724void inline_speed 762void inline_speed
725child_reap (EV_P_ ev_signal *sw, int chain, int pid, int status) 763child_reap (EV_P_ ev_signal *sw, int chain, int pid, int status)
726{ 764{
727 ev_child *w; 765 ev_child *w;
728 766
729 for (w = (ev_child *)childs [chain & (PID_HASHSIZE - 1)]; w; w = (ev_child *)((WL)w)->next) 767 for (w = (ev_child *)childs [chain & (EV_PID_HASHSIZE - 1)]; w; w = (ev_child *)((WL)w)->next)
730 if (w->pid == pid || !w->pid) 768 if (w->pid == pid || !w->pid)
731 { 769 {
732 ev_priority (w) = ev_priority (sw); /* need to do it *now* */ 770 ev_priority (w) = ev_priority (sw); /* need to do it *now* */
733 w->rpid = pid; 771 w->rpid = pid;
734 w->rstatus = status; 772 w->rstatus = status;
735 ev_feed_event (EV_A_ (W)w, EV_CHILD); 773 ev_feed_event (EV_A_ (W)w, EV_CHILD);
736 } 774 }
737} 775}
738 776
777#ifndef WCONTINUED
778# define WCONTINUED 0
779#endif
780
739static void 781static void
740childcb (EV_P_ ev_signal *sw, int revents) 782childcb (EV_P_ ev_signal *sw, int revents)
741{ 783{
742 int pid, status; 784 int pid, status;
743 785
786 /* some systems define WCONTINUED but then fail to support it (linux 2.4) */
744 if (0 < (pid = waitpid (-1, &status, WNOHANG | WUNTRACED | WCONTINUED))) 787 if (0 >= (pid = waitpid (-1, &status, WNOHANG | WUNTRACED | WCONTINUED)))
745 { 788 if (!WCONTINUED
789 || errno != EINVAL
790 || 0 >= (pid = waitpid (-1, &status, WNOHANG | WUNTRACED)))
791 return;
792
746 /* make sure we are called again until all childs have been reaped */ 793 /* 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 */ 794 /* 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); 795 ev_feed_event (EV_A_ (W)sw, EV_SIGNAL);
749 796
750 child_reap (EV_A_ sw, pid, pid, status); 797 child_reap (EV_A_ sw, pid, pid, status);
798 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 */ 799 child_reap (EV_A_ sw, 0, pid, status); /* this might trigger a watcher twice, but feed_event catches that */
752 }
753} 800}
754 801
755#endif 802#endif
756 803
757/*****************************************************************************/ 804/*****************************************************************************/
… …
840ev_backend (EV_P) 887ev_backend (EV_P)
841{ 888{
842 return backend; 889 return backend;
843} 890}
844 891
845static void 892static void noinline
846loop_init (EV_P_ unsigned int flags) 893loop_init (EV_P_ unsigned int flags)
847{ 894{
848 if (!backend) 895 if (!backend)
849 { 896 {
850#if EV_USE_MONOTONIC 897#if EV_USE_MONOTONIC
… …
867 914
868 if (!(flags & 0x0000ffffUL)) 915 if (!(flags & 0x0000ffffUL))
869 flags |= ev_recommended_backends (); 916 flags |= ev_recommended_backends ();
870 917
871 backend = 0; 918 backend = 0;
919 backend_fd = -1;
920#if EV_USE_INOTIFY
921 fs_fd = -2;
922#endif
923
872#if EV_USE_PORT 924#if EV_USE_PORT
873 if (!backend && (flags & EVBACKEND_PORT )) backend = port_init (EV_A_ flags); 925 if (!backend && (flags & EVBACKEND_PORT )) backend = port_init (EV_A_ flags);
874#endif 926#endif
875#if EV_USE_KQUEUE 927#if EV_USE_KQUEUE
876 if (!backend && (flags & EVBACKEND_KQUEUE)) backend = kqueue_init (EV_A_ flags); 928 if (!backend && (flags & EVBACKEND_KQUEUE)) backend = kqueue_init (EV_A_ flags);
… …
888 ev_init (&sigev, sigcb); 940 ev_init (&sigev, sigcb);
889 ev_set_priority (&sigev, EV_MAXPRI); 941 ev_set_priority (&sigev, EV_MAXPRI);
890 } 942 }
891} 943}
892 944
893static void 945static void noinline
894loop_destroy (EV_P) 946loop_destroy (EV_P)
895{ 947{
896 int i; 948 int i;
949
950#if EV_USE_INOTIFY
951 if (fs_fd >= 0)
952 close (fs_fd);
953#endif
954
955 if (backend_fd >= 0)
956 close (backend_fd);
897 957
898#if EV_USE_PORT 958#if EV_USE_PORT
899 if (backend == EVBACKEND_PORT ) port_destroy (EV_A); 959 if (backend == EVBACKEND_PORT ) port_destroy (EV_A);
900#endif 960#endif
901#if EV_USE_KQUEUE 961#if EV_USE_KQUEUE
… …
925 array_free (check, EMPTY0); 985 array_free (check, EMPTY0);
926 986
927 backend = 0; 987 backend = 0;
928} 988}
929 989
930static void 990void inline_size infy_fork (EV_P);
991
992void inline_size
931loop_fork (EV_P) 993loop_fork (EV_P)
932{ 994{
933#if EV_USE_PORT 995#if EV_USE_PORT
934 if (backend == EVBACKEND_PORT ) port_fork (EV_A); 996 if (backend == EVBACKEND_PORT ) port_fork (EV_A);
935#endif 997#endif
936#if EV_USE_KQUEUE 998#if EV_USE_KQUEUE
937 if (backend == EVBACKEND_KQUEUE) kqueue_fork (EV_A); 999 if (backend == EVBACKEND_KQUEUE) kqueue_fork (EV_A);
938#endif 1000#endif
939#if EV_USE_EPOLL 1001#if EV_USE_EPOLL
940 if (backend == EVBACKEND_EPOLL ) epoll_fork (EV_A); 1002 if (backend == EVBACKEND_EPOLL ) epoll_fork (EV_A);
1003#endif
1004#if EV_USE_INOTIFY
1005 infy_fork (EV_A);
941#endif 1006#endif
942 1007
943 if (ev_is_active (&sigev)) 1008 if (ev_is_active (&sigev))
944 { 1009 {
945 /* default loop */ 1010 /* default loop */
… …
1085 { 1150 {
1086 ANPENDING *p = pendings [pri] + --pendingcnt [pri]; 1151 ANPENDING *p = pendings [pri] + --pendingcnt [pri];
1087 1152
1088 if (expect_true (p->w)) 1153 if (expect_true (p->w))
1089 { 1154 {
1090 assert (("non-pending watcher on pending list", p->w->pending)); 1155 /*assert (("non-pending watcher on pending list", p->w->pending));*/
1091 1156
1092 p->w->pending = 0; 1157 p->w->pending = 0;
1093 EV_CB_INVOKE (p->w, p->events); 1158 EV_CB_INVOKE (p->w, p->events);
1094 } 1159 }
1095 } 1160 }
… …
1100{ 1165{
1101 while (timercnt && ((WT)timers [0])->at <= mn_now) 1166 while (timercnt && ((WT)timers [0])->at <= mn_now)
1102 { 1167 {
1103 ev_timer *w = timers [0]; 1168 ev_timer *w = timers [0];
1104 1169
1105 assert (("inactive timer on timer heap detected", ev_is_active (w))); 1170 /*assert (("inactive timer on timer heap detected", ev_is_active (w)));*/
1106 1171
1107 /* first reschedule or stop timer */ 1172 /* first reschedule or stop timer */
1108 if (w->repeat) 1173 if (w->repeat)
1109 { 1174 {
1110 assert (("negative ev_timer repeat value found while processing timers", w->repeat > 0.)); 1175 assert (("negative ev_timer repeat value found while processing timers", w->repeat > 0.));
… …
1128{ 1193{
1129 while (periodiccnt && ((WT)periodics [0])->at <= ev_rt_now) 1194 while (periodiccnt && ((WT)periodics [0])->at <= ev_rt_now)
1130 { 1195 {
1131 ev_periodic *w = periodics [0]; 1196 ev_periodic *w = periodics [0];
1132 1197
1133 assert (("inactive timer on periodic heap detected", ev_is_active (w))); 1198 /*assert (("inactive timer on periodic heap detected", ev_is_active (w)));*/
1134 1199
1135 /* first reschedule or stop timer */ 1200 /* first reschedule or stop timer */
1136 if (w->reschedule_cb) 1201 if (w->reschedule_cb)
1137 { 1202 {
1138 ((WT)w)->at = w->reschedule_cb (w, ev_rt_now + 0.0001); 1203 ((WT)w)->at = w->reschedule_cb (w, ev_rt_now + 0.0001);
… …
1272 ? EVUNLOOP_ONE 1337 ? EVUNLOOP_ONE
1273 : EVUNLOOP_CANCEL; 1338 : EVUNLOOP_CANCEL;
1274 1339
1275 while (activecnt) 1340 while (activecnt)
1276 { 1341 {
1342 /* we might have forked, so reify kernel state if necessary */
1343 #if EV_FORK_ENABLE
1344 if (expect_false (postfork))
1345 if (forkcnt)
1346 {
1347 queue_events (EV_A_ (W *)forks, forkcnt, EV_FORK);
1348 call_pending (EV_A);
1349 }
1350 #endif
1351
1277 /* queue check watchers (and execute them) */ 1352 /* queue check watchers (and execute them) */
1278 if (expect_false (preparecnt)) 1353 if (expect_false (preparecnt))
1279 { 1354 {
1280 queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE); 1355 queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE);
1281 call_pending (EV_A); 1356 call_pending (EV_A);
… …
1460 ev_start (EV_A_ (W)w, ++timercnt); 1535 ev_start (EV_A_ (W)w, ++timercnt);
1461 array_needsize (ev_timer *, timers, timermax, timercnt, EMPTY2); 1536 array_needsize (ev_timer *, timers, timermax, timercnt, EMPTY2);
1462 timers [timercnt - 1] = w; 1537 timers [timercnt - 1] = w;
1463 upheap ((WT *)timers, timercnt - 1); 1538 upheap ((WT *)timers, timercnt - 1);
1464 1539
1465 assert (("internal timer heap corruption", timers [((W)w)->active - 1] == w)); 1540 /*assert (("internal timer heap corruption", timers [((W)w)->active - 1] == w));*/
1466} 1541}
1467 1542
1468void 1543void
1469ev_timer_stop (EV_P_ ev_timer *w) 1544ev_timer_stop (EV_P_ ev_timer *w)
1470{ 1545{
… …
1472 if (expect_false (!ev_is_active (w))) 1547 if (expect_false (!ev_is_active (w)))
1473 return; 1548 return;
1474 1549
1475 assert (("internal timer heap corruption", timers [((W)w)->active - 1] == w)); 1550 assert (("internal timer heap corruption", timers [((W)w)->active - 1] == w));
1476 1551
1552 {
1553 int active = ((W)w)->active;
1554
1477 if (expect_true (((W)w)->active < timercnt--)) 1555 if (expect_true (--active < --timercnt))
1478 { 1556 {
1479 timers [((W)w)->active - 1] = timers [timercnt]; 1557 timers [active] = timers [timercnt];
1480 adjustheap ((WT *)timers, timercnt, ((W)w)->active - 1); 1558 adjustheap ((WT *)timers, timercnt, active);
1481 } 1559 }
1560 }
1482 1561
1483 ((WT)w)->at -= mn_now; 1562 ((WT)w)->at -= mn_now;
1484 1563
1485 ev_stop (EV_A_ (W)w); 1564 ev_stop (EV_A_ (W)w);
1486} 1565}
… …
1524 ev_start (EV_A_ (W)w, ++periodiccnt); 1603 ev_start (EV_A_ (W)w, ++periodiccnt);
1525 array_needsize (ev_periodic *, periodics, periodicmax, periodiccnt, EMPTY2); 1604 array_needsize (ev_periodic *, periodics, periodicmax, periodiccnt, EMPTY2);
1526 periodics [periodiccnt - 1] = w; 1605 periodics [periodiccnt - 1] = w;
1527 upheap ((WT *)periodics, periodiccnt - 1); 1606 upheap ((WT *)periodics, periodiccnt - 1);
1528 1607
1529 assert (("internal periodic heap corruption", periodics [((W)w)->active - 1] == w)); 1608 /*assert (("internal periodic heap corruption", periodics [((W)w)->active - 1] == w));*/
1530} 1609}
1531 1610
1532void 1611void
1533ev_periodic_stop (EV_P_ ev_periodic *w) 1612ev_periodic_stop (EV_P_ ev_periodic *w)
1534{ 1613{
… …
1536 if (expect_false (!ev_is_active (w))) 1615 if (expect_false (!ev_is_active (w)))
1537 return; 1616 return;
1538 1617
1539 assert (("internal periodic heap corruption", periodics [((W)w)->active - 1] == w)); 1618 assert (("internal periodic heap corruption", periodics [((W)w)->active - 1] == w));
1540 1619
1620 {
1621 int active = ((W)w)->active;
1622
1541 if (expect_true (((W)w)->active < periodiccnt--)) 1623 if (expect_true (--active < --periodiccnt))
1542 { 1624 {
1543 periodics [((W)w)->active - 1] = periodics [periodiccnt]; 1625 periodics [active] = periodics [periodiccnt];
1544 adjustheap ((WT *)periodics, periodiccnt, ((W)w)->active - 1); 1626 adjustheap ((WT *)periodics, periodiccnt, active);
1545 } 1627 }
1628 }
1546 1629
1547 ev_stop (EV_A_ (W)w); 1630 ev_stop (EV_A_ (W)w);
1548} 1631}
1549 1632
1550void 1633void
… …
1553 /* TODO: use adjustheap and recalculation */ 1636 /* TODO: use adjustheap and recalculation */
1554 ev_periodic_stop (EV_A_ w); 1637 ev_periodic_stop (EV_A_ w);
1555 ev_periodic_start (EV_A_ w); 1638 ev_periodic_start (EV_A_ w);
1556} 1639}
1557#endif 1640#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 1641
1640#ifndef SA_RESTART 1642#ifndef SA_RESTART
1641# define SA_RESTART 0 1643# define SA_RESTART 0
1642#endif 1644#endif
1643 1645
… …
1692#endif 1694#endif
1693 if (expect_false (ev_is_active (w))) 1695 if (expect_false (ev_is_active (w)))
1694 return; 1696 return;
1695 1697
1696 ev_start (EV_A_ (W)w, 1); 1698 ev_start (EV_A_ (W)w, 1);
1697 wlist_add ((WL *)&childs [w->pid & (PID_HASHSIZE - 1)], (WL)w); 1699 wlist_add ((WL *)&childs [w->pid & (EV_PID_HASHSIZE - 1)], (WL)w);
1698} 1700}
1699 1701
1700void 1702void
1701ev_child_stop (EV_P_ ev_child *w) 1703ev_child_stop (EV_P_ ev_child *w)
1702{ 1704{
1703 ev_clear_pending (EV_A_ (W)w); 1705 ev_clear_pending (EV_A_ (W)w);
1704 if (expect_false (!ev_is_active (w))) 1706 if (expect_false (!ev_is_active (w)))
1705 return; 1707 return;
1706 1708
1707 wlist_del ((WL *)&childs [w->pid & (PID_HASHSIZE - 1)], (WL)w); 1709 wlist_del ((WL *)&childs [w->pid & (EV_PID_HASHSIZE - 1)], (WL)w);
1710 ev_stop (EV_A_ (W)w);
1711}
1712
1713#if EV_STAT_ENABLE
1714
1715# ifdef _WIN32
1716# undef lstat
1717# define lstat(a,b) _stati64 (a,b)
1718# endif
1719
1720#define DEF_STAT_INTERVAL 5.0074891
1721#define MIN_STAT_INTERVAL 0.1074891
1722
1723void noinline stat_timer_cb (EV_P_ ev_timer *w_, int revents);
1724
1725#if EV_USE_INOTIFY
1726# define EV_INOTIFY_BUFSIZE 8192
1727
1728static void noinline
1729infy_add (EV_P_ ev_stat *w)
1730{
1731 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);
1732
1733 if (w->wd < 0)
1734 {
1735 ev_timer_start (EV_A_ &w->timer); /* this is not race-free, so we still need to recheck periodically */
1736
1737 /* monitor some parent directory for speedup hints */
1738 if ((errno == ENOENT || errno == EACCES) && strlen (w->path) < 4096)
1739 {
1740 char path [4096];
1741 strcpy (path, w->path);
1742
1743 do
1744 {
1745 int mask = IN_MASK_ADD | IN_DELETE_SELF | IN_MOVE_SELF
1746 | (errno == EACCES ? IN_ATTRIB : IN_CREATE | IN_MOVED_TO);
1747
1748 char *pend = strrchr (path, '/');
1749
1750 if (!pend)
1751 break; /* whoops, no '/', complain to your admin */
1752
1753 *pend = 0;
1754 w->wd = inotify_add_watch (fs_fd, path, mask);
1755 }
1756 while (w->wd < 0 && (errno == ENOENT || errno == EACCES));
1757 }
1758 }
1759 else
1760 ev_timer_stop (EV_A_ &w->timer); /* we can watch this in a race-free way */
1761
1762 if (w->wd >= 0)
1763 wlist_add (&fs_hash [w->wd & (EV_INOTIFY_HASHSIZE - 1)].head, (WL)w);
1764}
1765
1766static void noinline
1767infy_del (EV_P_ ev_stat *w)
1768{
1769 int slot;
1770 int wd = w->wd;
1771
1772 if (wd < 0)
1773 return;
1774
1775 w->wd = -2;
1776 slot = wd & (EV_INOTIFY_HASHSIZE - 1);
1777 wlist_del (&fs_hash [slot].head, (WL)w);
1778
1779 /* remove this watcher, if others are watching it, they will rearm */
1780 inotify_rm_watch (fs_fd, wd);
1781}
1782
1783static void noinline
1784infy_wd (EV_P_ int slot, int wd, struct inotify_event *ev)
1785{
1786 if (slot < 0)
1787 /* overflow, need to check for all hahs slots */
1788 for (slot = 0; slot < EV_INOTIFY_HASHSIZE; ++slot)
1789 infy_wd (EV_A_ slot, wd, ev);
1790 else
1791 {
1792 WL w_;
1793
1794 for (w_ = fs_hash [slot & (EV_INOTIFY_HASHSIZE - 1)].head; w_; )
1795 {
1796 ev_stat *w = (ev_stat *)w_;
1797 w_ = w_->next; /* lets us remove this watcher and all before it */
1798
1799 if (w->wd == wd || wd == -1)
1800 {
1801 if (ev->mask & (IN_IGNORED | IN_UNMOUNT | IN_DELETE_SELF))
1802 {
1803 w->wd = -1;
1804 infy_add (EV_A_ w); /* re-add, no matter what */
1805 }
1806
1807 stat_timer_cb (EV_A_ &w->timer, 0);
1808 }
1809 }
1810 }
1811}
1812
1813static void
1814infy_cb (EV_P_ ev_io *w, int revents)
1815{
1816 char buf [EV_INOTIFY_BUFSIZE];
1817 struct inotify_event *ev = (struct inotify_event *)buf;
1818 int ofs;
1819 int len = read (fs_fd, buf, sizeof (buf));
1820
1821 for (ofs = 0; ofs < len; ofs += sizeof (struct inotify_event) + ev->len)
1822 infy_wd (EV_A_ ev->wd, ev->wd, ev);
1823}
1824
1825void inline_size
1826infy_init (EV_P)
1827{
1828 if (fs_fd != -2)
1829 return;
1830
1831 fs_fd = inotify_init ();
1832
1833 if (fs_fd >= 0)
1834 {
1835 ev_io_init (&fs_w, infy_cb, fs_fd, EV_READ);
1836 ev_set_priority (&fs_w, EV_MAXPRI);
1837 ev_io_start (EV_A_ &fs_w);
1838 }
1839}
1840
1841void inline_size
1842infy_fork (EV_P)
1843{
1844 int slot;
1845
1846 if (fs_fd < 0)
1847 return;
1848
1849 close (fs_fd);
1850 fs_fd = inotify_init ();
1851
1852 for (slot = 0; slot < EV_INOTIFY_HASHSIZE; ++slot)
1853 {
1854 WL w_ = fs_hash [slot].head;
1855 fs_hash [slot].head = 0;
1856
1857 while (w_)
1858 {
1859 ev_stat *w = (ev_stat *)w_;
1860 w_ = w_->next; /* lets us add this watcher */
1861
1862 w->wd = -1;
1863
1864 if (fs_fd >= 0)
1865 infy_add (EV_A_ w); /* re-add, no matter what */
1866 else
1867 ev_timer_start (EV_A_ &w->timer);
1868 }
1869
1870 }
1871}
1872
1873#endif
1874
1875void
1876ev_stat_stat (EV_P_ ev_stat *w)
1877{
1878 if (lstat (w->path, &w->attr) < 0)
1879 w->attr.st_nlink = 0;
1880 else if (!w->attr.st_nlink)
1881 w->attr.st_nlink = 1;
1882}
1883
1884void noinline
1885stat_timer_cb (EV_P_ ev_timer *w_, int revents)
1886{
1887 ev_stat *w = (ev_stat *)(((char *)w_) - offsetof (ev_stat, timer));
1888
1889 /* we copy this here each the time so that */
1890 /* prev has the old value when the callback gets invoked */
1891 w->prev = w->attr;
1892 ev_stat_stat (EV_A_ w);
1893
1894 if (memcmp (&w->prev, &w->attr, sizeof (ev_statdata)))
1895 {
1896 #if EV_USE_INOTIFY
1897 infy_del (EV_A_ w);
1898 infy_add (EV_A_ w);
1899 ev_stat_stat (EV_A_ w); /* avoid race... */
1900 #endif
1901
1902 ev_feed_event (EV_A_ w, EV_STAT);
1903 }
1904}
1905
1906void
1907ev_stat_start (EV_P_ ev_stat *w)
1908{
1909 if (expect_false (ev_is_active (w)))
1910 return;
1911
1912 /* since we use memcmp, we need to clear any padding data etc. */
1913 memset (&w->prev, 0, sizeof (ev_statdata));
1914 memset (&w->attr, 0, sizeof (ev_statdata));
1915
1916 ev_stat_stat (EV_A_ w);
1917
1918 if (w->interval < MIN_STAT_INTERVAL)
1919 w->interval = w->interval ? MIN_STAT_INTERVAL : DEF_STAT_INTERVAL;
1920
1921 ev_timer_init (&w->timer, stat_timer_cb, w->interval, w->interval);
1922 ev_set_priority (&w->timer, ev_priority (w));
1923
1924#if EV_USE_INOTIFY
1925 infy_init (EV_A);
1926
1927 if (fs_fd >= 0)
1928 infy_add (EV_A_ w);
1929 else
1930#endif
1931 ev_timer_start (EV_A_ &w->timer);
1932
1933 ev_start (EV_A_ (W)w, 1);
1934}
1935
1936void
1937ev_stat_stop (EV_P_ ev_stat *w)
1938{
1939 ev_clear_pending (EV_A_ (W)w);
1940 if (expect_false (!ev_is_active (w)))
1941 return;
1942
1943#if EV_USE_INOTIFY
1944 infy_del (EV_A_ w);
1945#endif
1946 ev_timer_stop (EV_A_ &w->timer);
1947
1948 ev_stop (EV_A_ (W)w);
1949}
1950#endif
1951
1952void
1953ev_idle_start (EV_P_ ev_idle *w)
1954{
1955 if (expect_false (ev_is_active (w)))
1956 return;
1957
1958 ev_start (EV_A_ (W)w, ++idlecnt);
1959 array_needsize (ev_idle *, idles, idlemax, idlecnt, EMPTY2);
1960 idles [idlecnt - 1] = w;
1961}
1962
1963void
1964ev_idle_stop (EV_P_ ev_idle *w)
1965{
1966 ev_clear_pending (EV_A_ (W)w);
1967 if (expect_false (!ev_is_active (w)))
1968 return;
1969
1970 {
1971 int active = ((W)w)->active;
1972 idles [active - 1] = idles [--idlecnt];
1973 ((W)idles [active - 1])->active = active;
1974 }
1975
1976 ev_stop (EV_A_ (W)w);
1977}
1978
1979void
1980ev_prepare_start (EV_P_ ev_prepare *w)
1981{
1982 if (expect_false (ev_is_active (w)))
1983 return;
1984
1985 ev_start (EV_A_ (W)w, ++preparecnt);
1986 array_needsize (ev_prepare *, prepares, preparemax, preparecnt, EMPTY2);
1987 prepares [preparecnt - 1] = w;
1988}
1989
1990void
1991ev_prepare_stop (EV_P_ ev_prepare *w)
1992{
1993 ev_clear_pending (EV_A_ (W)w);
1994 if (expect_false (!ev_is_active (w)))
1995 return;
1996
1997 {
1998 int active = ((W)w)->active;
1999 prepares [active - 1] = prepares [--preparecnt];
2000 ((W)prepares [active - 1])->active = active;
2001 }
2002
2003 ev_stop (EV_A_ (W)w);
2004}
2005
2006void
2007ev_check_start (EV_P_ ev_check *w)
2008{
2009 if (expect_false (ev_is_active (w)))
2010 return;
2011
2012 ev_start (EV_A_ (W)w, ++checkcnt);
2013 array_needsize (ev_check *, checks, checkmax, checkcnt, EMPTY2);
2014 checks [checkcnt - 1] = w;
2015}
2016
2017void
2018ev_check_stop (EV_P_ ev_check *w)
2019{
2020 ev_clear_pending (EV_A_ (W)w);
2021 if (expect_false (!ev_is_active (w)))
2022 return;
2023
2024 {
2025 int active = ((W)w)->active;
2026 checks [active - 1] = checks [--checkcnt];
2027 ((W)checks [active - 1])->active = active;
2028 }
2029
1708 ev_stop (EV_A_ (W)w); 2030 ev_stop (EV_A_ (W)w);
1709} 2031}
1710 2032
1711#if EV_EMBED_ENABLE 2033#if EV_EMBED_ENABLE
1712void noinline 2034void noinline
… …
1755 2077
1756 ev_stop (EV_A_ (W)w); 2078 ev_stop (EV_A_ (W)w);
1757} 2079}
1758#endif 2080#endif
1759 2081
1760#if EV_STAT_ENABLE 2082#if EV_FORK_ENABLE
1761
1762# ifdef _WIN32
1763# define lstat(a,b) stat(a,b)
1764# endif
1765
1766void 2083void
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) 2084ev_fork_start (EV_P_ ev_fork *w)
1791{ 2085{
1792 if (expect_false (ev_is_active (w))) 2086 if (expect_false (ev_is_active (w)))
1793 return; 2087 return;
1794 2088
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); 2089 ev_start (EV_A_ (W)w, ++forkcnt);
2090 array_needsize (ev_fork *, forks, forkmax, forkcnt, EMPTY2);
2091 forks [forkcnt - 1] = w;
1806} 2092}
1807 2093
1808void 2094void
1809ev_stat_stop (EV_P_ ev_stat *w) 2095ev_fork_stop (EV_P_ ev_fork *w)
1810{ 2096{
1811 ev_clear_pending (EV_A_ (W)w); 2097 ev_clear_pending (EV_A_ (W)w);
1812 if (expect_false (!ev_is_active (w))) 2098 if (expect_false (!ev_is_active (w)))
1813 return; 2099 return;
1814 2100
1815 ev_timer_stop (EV_A_ &w->timer); 2101 {
2102 int active = ((W)w)->active;
2103 forks [active - 1] = forks [--forkcnt];
2104 ((W)forks [active - 1])->active = active;
2105 }
1816 2106
1817 ev_stop (EV_A_ (W)w); 2107 ev_stop (EV_A_ (W)w);
1818} 2108}
1819#endif 2109#endif
1820 2110

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