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Comparing libev/ev.c (file contents):
Revision 1.140 by root, Mon Nov 26 19:49:36 2007 UTC vs.
Revision 1.153 by root, Wed Nov 28 11:41:18 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)
… …
225 260
226/*****************************************************************************/ 261/*****************************************************************************/
227 262
228static void (*syserr_cb)(const char *msg); 263static void (*syserr_cb)(const char *msg);
229 264
265void
230void ev_set_syserr_cb (void (*cb)(const char *msg)) 266ev_set_syserr_cb (void (*cb)(const char *msg))
231{ 267{
232 syserr_cb = cb; 268 syserr_cb = cb;
233} 269}
234 270
235static void 271static void noinline
236syserr (const char *msg) 272syserr (const char *msg)
237{ 273{
238 if (!msg) 274 if (!msg)
239 msg = "(libev) system error"; 275 msg = "(libev) system error";
240 276
… …
245 perror (msg); 281 perror (msg);
246 abort (); 282 abort ();
247 } 283 }
248} 284}
249 285
250static void *(*alloc)(void *ptr, long size); 286static void *(*alloc)(void *ptr, size_t size) = realloc;
251 287
288void
252void ev_set_allocator (void *(*cb)(void *ptr, long size)) 289ev_set_allocator (void *(*cb)(void *ptr, size_t size))
253{ 290{
254 alloc = cb; 291 alloc = cb;
255} 292}
256 293
257static void * 294inline_speed void *
258ev_realloc (void *ptr, long size) 295ev_realloc (void *ptr, size_t size)
259{ 296{
260 ptr = alloc ? alloc (ptr, size) : realloc (ptr, size); 297 ptr = alloc (ptr, size);
261 298
262 if (!ptr && size) 299 if (!ptr && size)
263 { 300 {
264 fprintf (stderr, "libev: cannot allocate %ld bytes, aborting.", size); 301 fprintf (stderr, "libev: cannot allocate %ld bytes, aborting.", (long)size);
265 abort (); 302 abort ();
266 } 303 }
267 304
268 return ptr; 305 return ptr;
269} 306}
… …
286typedef struct 323typedef struct
287{ 324{
288 W w; 325 W w;
289 int events; 326 int events;
290} ANPENDING; 327} ANPENDING;
328
329typedef struct
330{
331#if EV_USE_INOTIFY
332 WL head;
333#endif
334} ANFS;
291 335
292#if EV_MULTIPLICITY 336#if EV_MULTIPLICITY
293 337
294 struct ev_loop 338 struct ev_loop
295 { 339 {
… …
315 359
316#endif 360#endif
317 361
318/*****************************************************************************/ 362/*****************************************************************************/
319 363
320ev_tstamp noinline 364ev_tstamp
321ev_time (void) 365ev_time (void)
322{ 366{
323#if EV_USE_REALTIME 367#if EV_USE_REALTIME
324 struct timespec ts; 368 struct timespec ts;
325 clock_gettime (CLOCK_REALTIME, &ts); 369 clock_gettime (CLOCK_REALTIME, &ts);
… …
382#define array_free(stem, idx) \ 426#define array_free(stem, idx) \
383 ev_free (stem ## s idx); stem ## cnt idx = stem ## max idx = 0; 427 ev_free (stem ## s idx); stem ## cnt idx = stem ## max idx = 0;
384 428
385/*****************************************************************************/ 429/*****************************************************************************/
386 430
387void inline_size
388anfds_init (ANFD *base, int count)
389{
390 while (count--)
391 {
392 base->head = 0;
393 base->events = EV_NONE;
394 base->reify = 0;
395
396 ++base;
397 }
398}
399
400void noinline 431void noinline
401ev_feed_event (EV_P_ void *w, int revents) 432ev_feed_event (EV_P_ void *w, int revents)
402{ 433{
403 W w_ = (W)w; 434 W w_ = (W)w;
404 435
… …
412 array_needsize (ANPENDING, pendings [ABSPRI (w_)], pendingmax [ABSPRI (w_)], pendingcnt [ABSPRI (w_)], EMPTY2); 443 array_needsize (ANPENDING, pendings [ABSPRI (w_)], pendingmax [ABSPRI (w_)], pendingcnt [ABSPRI (w_)], EMPTY2);
413 pendings [ABSPRI (w_)][w_->pending - 1].w = w_; 444 pendings [ABSPRI (w_)][w_->pending - 1].w = w_;
414 pendings [ABSPRI (w_)][w_->pending - 1].events = revents; 445 pendings [ABSPRI (w_)][w_->pending - 1].events = revents;
415} 446}
416 447
417static void 448void inline_size
418queue_events (EV_P_ W *events, int eventcnt, int type) 449queue_events (EV_P_ W *events, int eventcnt, int type)
419{ 450{
420 int i; 451 int i;
421 452
422 for (i = 0; i < eventcnt; ++i) 453 for (i = 0; i < eventcnt; ++i)
423 ev_feed_event (EV_A_ events [i], type); 454 ev_feed_event (EV_A_ events [i], type);
424} 455}
425 456
457/*****************************************************************************/
458
459void inline_size
460anfds_init (ANFD *base, int count)
461{
462 while (count--)
463 {
464 base->head = 0;
465 base->events = EV_NONE;
466 base->reify = 0;
467
468 ++base;
469 }
470}
471
426void inline_speed 472void inline_speed
427fd_event (EV_P_ int fd, int revents) 473fd_event (EV_P_ int fd, int revents)
428{ 474{
429 ANFD *anfd = anfds + fd; 475 ANFD *anfd = anfds + fd;
430 ev_io *w; 476 ev_io *w;
… …
441void 487void
442ev_feed_fd_event (EV_P_ int fd, int revents) 488ev_feed_fd_event (EV_P_ int fd, int revents)
443{ 489{
444 fd_event (EV_A_ fd, revents); 490 fd_event (EV_A_ fd, revents);
445} 491}
446
447/*****************************************************************************/
448 492
449void inline_size 493void inline_size
450fd_reify (EV_P) 494fd_reify (EV_P)
451{ 495{
452 int i; 496 int i;
… …
707 ev_unref (EV_A); /* child watcher should not keep loop alive */ 751 ev_unref (EV_A); /* child watcher should not keep loop alive */
708} 752}
709 753
710/*****************************************************************************/ 754/*****************************************************************************/
711 755
712static ev_child *childs [PID_HASHSIZE]; 756static ev_child *childs [EV_PID_HASHSIZE];
713 757
714#ifndef _WIN32 758#ifndef _WIN32
715 759
716static ev_signal childev; 760static ev_signal childev;
717
718#ifndef WCONTINUED
719# define WCONTINUED 0
720#endif
721 761
722void inline_speed 762void inline_speed
723child_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)
724{ 764{
725 ev_child *w; 765 ev_child *w;
726 766
727 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)
728 if (w->pid == pid || !w->pid) 768 if (w->pid == pid || !w->pid)
729 { 769 {
730 ev_priority (w) = ev_priority (sw); /* need to do it *now* */ 770 ev_priority (w) = ev_priority (sw); /* need to do it *now* */
731 w->rpid = pid; 771 w->rpid = pid;
732 w->rstatus = status; 772 w->rstatus = status;
733 ev_feed_event (EV_A_ (W)w, EV_CHILD); 773 ev_feed_event (EV_A_ (W)w, EV_CHILD);
734 } 774 }
735} 775}
736 776
777#ifndef WCONTINUED
778# define WCONTINUED 0
779#endif
780
737static void 781static void
738childcb (EV_P_ ev_signal *sw, int revents) 782childcb (EV_P_ ev_signal *sw, int revents)
739{ 783{
740 int pid, status; 784 int pid, status;
741 785
786 /* some systems define WCONTINUED but then fail to support it (linux 2.4) */
742 if (0 < (pid = waitpid (-1, &status, WNOHANG | WUNTRACED | WCONTINUED))) 787 if (0 >= (pid = waitpid (-1, &status, WNOHANG | WUNTRACED | WCONTINUED)))
743 { 788 if (!WCONTINUED
789 || errno != EINVAL
790 || 0 >= (pid = waitpid (-1, &status, WNOHANG | WUNTRACED)))
791 return;
792
744 /* 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 */
745 /* 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 */
746 ev_feed_event (EV_A_ (W)sw, EV_SIGNAL); 795 ev_feed_event (EV_A_ (W)sw, EV_SIGNAL);
747 796
748 child_reap (EV_A_ sw, pid, pid, status); 797 child_reap (EV_A_ sw, pid, pid, status);
798 if (EV_PID_HASHSIZE > 1)
749 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 */
750 }
751} 800}
752 801
753#endif 802#endif
754 803
755/*****************************************************************************/ 804/*****************************************************************************/
… …
838ev_backend (EV_P) 887ev_backend (EV_P)
839{ 888{
840 return backend; 889 return backend;
841} 890}
842 891
843static void 892static void noinline
844loop_init (EV_P_ unsigned int flags) 893loop_init (EV_P_ unsigned int flags)
845{ 894{
846 if (!backend) 895 if (!backend)
847 { 896 {
848#if EV_USE_MONOTONIC 897#if EV_USE_MONOTONIC
… …
865 914
866 if (!(flags & 0x0000ffffUL)) 915 if (!(flags & 0x0000ffffUL))
867 flags |= ev_recommended_backends (); 916 flags |= ev_recommended_backends ();
868 917
869 backend = 0; 918 backend = 0;
919 backend_fd = -1;
920#if EV_USE_INOTIFY
921 fs_fd = -2;
922#endif
923
870#if EV_USE_PORT 924#if EV_USE_PORT
871 if (!backend && (flags & EVBACKEND_PORT )) backend = port_init (EV_A_ flags); 925 if (!backend && (flags & EVBACKEND_PORT )) backend = port_init (EV_A_ flags);
872#endif 926#endif
873#if EV_USE_KQUEUE 927#if EV_USE_KQUEUE
874 if (!backend && (flags & EVBACKEND_KQUEUE)) backend = kqueue_init (EV_A_ flags); 928 if (!backend && (flags & EVBACKEND_KQUEUE)) backend = kqueue_init (EV_A_ flags);
… …
886 ev_init (&sigev, sigcb); 940 ev_init (&sigev, sigcb);
887 ev_set_priority (&sigev, EV_MAXPRI); 941 ev_set_priority (&sigev, EV_MAXPRI);
888 } 942 }
889} 943}
890 944
891static void 945static void noinline
892loop_destroy (EV_P) 946loop_destroy (EV_P)
893{ 947{
894 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);
895 957
896#if EV_USE_PORT 958#if EV_USE_PORT
897 if (backend == EVBACKEND_PORT ) port_destroy (EV_A); 959 if (backend == EVBACKEND_PORT ) port_destroy (EV_A);
898#endif 960#endif
899#if EV_USE_KQUEUE 961#if EV_USE_KQUEUE
… …
923 array_free (check, EMPTY0); 985 array_free (check, EMPTY0);
924 986
925 backend = 0; 987 backend = 0;
926} 988}
927 989
928static void 990void inline_size
929loop_fork (EV_P) 991loop_fork (EV_P)
930{ 992{
931#if EV_USE_PORT 993#if EV_USE_PORT
932 if (backend == EVBACKEND_PORT ) port_fork (EV_A); 994 if (backend == EVBACKEND_PORT ) port_fork (EV_A);
933#endif 995#endif
… …
1083 { 1145 {
1084 ANPENDING *p = pendings [pri] + --pendingcnt [pri]; 1146 ANPENDING *p = pendings [pri] + --pendingcnt [pri];
1085 1147
1086 if (expect_true (p->w)) 1148 if (expect_true (p->w))
1087 { 1149 {
1088 assert (("non-pending watcher on pending list", p->w->pending)); 1150 /*assert (("non-pending watcher on pending list", p->w->pending));*/
1089 1151
1090 p->w->pending = 0; 1152 p->w->pending = 0;
1091 EV_CB_INVOKE (p->w, p->events); 1153 EV_CB_INVOKE (p->w, p->events);
1092 } 1154 }
1093 } 1155 }
… …
1098{ 1160{
1099 while (timercnt && ((WT)timers [0])->at <= mn_now) 1161 while (timercnt && ((WT)timers [0])->at <= mn_now)
1100 { 1162 {
1101 ev_timer *w = timers [0]; 1163 ev_timer *w = timers [0];
1102 1164
1103 assert (("inactive timer on timer heap detected", ev_is_active (w))); 1165 /*assert (("inactive timer on timer heap detected", ev_is_active (w)));*/
1104 1166
1105 /* first reschedule or stop timer */ 1167 /* first reschedule or stop timer */
1106 if (w->repeat) 1168 if (w->repeat)
1107 { 1169 {
1108 assert (("negative ev_timer repeat value found while processing timers", w->repeat > 0.)); 1170 assert (("negative ev_timer repeat value found while processing timers", w->repeat > 0.));
… …
1126{ 1188{
1127 while (periodiccnt && ((WT)periodics [0])->at <= ev_rt_now) 1189 while (periodiccnt && ((WT)periodics [0])->at <= ev_rt_now)
1128 { 1190 {
1129 ev_periodic *w = periodics [0]; 1191 ev_periodic *w = periodics [0];
1130 1192
1131 assert (("inactive timer on periodic heap detected", ev_is_active (w))); 1193 /*assert (("inactive timer on periodic heap detected", ev_is_active (w)));*/
1132 1194
1133 /* first reschedule or stop timer */ 1195 /* first reschedule or stop timer */
1134 if (w->reschedule_cb) 1196 if (w->reschedule_cb)
1135 { 1197 {
1136 ((WT)w)->at = w->reschedule_cb (w, ev_rt_now + 0.0001); 1198 ((WT)w)->at = w->reschedule_cb (w, ev_rt_now + 0.0001);
… …
1270 ? EVUNLOOP_ONE 1332 ? EVUNLOOP_ONE
1271 : EVUNLOOP_CANCEL; 1333 : EVUNLOOP_CANCEL;
1272 1334
1273 while (activecnt) 1335 while (activecnt)
1274 { 1336 {
1337 /* we might have forked, so reify kernel state if necessary */
1338 #if EV_FORK_ENABLE
1339 if (expect_false (postfork))
1340 if (forkcnt)
1341 {
1342 queue_events (EV_A_ (W *)forks, forkcnt, EV_FORK);
1343 call_pending (EV_A);
1344 }
1345 #endif
1346
1275 /* queue check watchers (and execute them) */ 1347 /* queue check watchers (and execute them) */
1276 if (expect_false (preparecnt)) 1348 if (expect_false (preparecnt))
1277 { 1349 {
1278 queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE); 1350 queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE);
1279 call_pending (EV_A); 1351 call_pending (EV_A);
… …
1458 ev_start (EV_A_ (W)w, ++timercnt); 1530 ev_start (EV_A_ (W)w, ++timercnt);
1459 array_needsize (ev_timer *, timers, timermax, timercnt, EMPTY2); 1531 array_needsize (ev_timer *, timers, timermax, timercnt, EMPTY2);
1460 timers [timercnt - 1] = w; 1532 timers [timercnt - 1] = w;
1461 upheap ((WT *)timers, timercnt - 1); 1533 upheap ((WT *)timers, timercnt - 1);
1462 1534
1463 assert (("internal timer heap corruption", timers [((W)w)->active - 1] == w)); 1535 /*assert (("internal timer heap corruption", timers [((W)w)->active - 1] == w));*/
1464} 1536}
1465 1537
1466void 1538void
1467ev_timer_stop (EV_P_ ev_timer *w) 1539ev_timer_stop (EV_P_ ev_timer *w)
1468{ 1540{
… …
1470 if (expect_false (!ev_is_active (w))) 1542 if (expect_false (!ev_is_active (w)))
1471 return; 1543 return;
1472 1544
1473 assert (("internal timer heap corruption", timers [((W)w)->active - 1] == w)); 1545 assert (("internal timer heap corruption", timers [((W)w)->active - 1] == w));
1474 1546
1547 {
1548 int active = ((W)w)->active;
1549
1475 if (expect_true (((W)w)->active < timercnt--)) 1550 if (expect_true (--active < --timercnt))
1476 { 1551 {
1477 timers [((W)w)->active - 1] = timers [timercnt]; 1552 timers [active] = timers [timercnt];
1478 adjustheap ((WT *)timers, timercnt, ((W)w)->active - 1); 1553 adjustheap ((WT *)timers, timercnt, active);
1479 } 1554 }
1555 }
1480 1556
1481 ((WT)w)->at -= mn_now; 1557 ((WT)w)->at -= mn_now;
1482 1558
1483 ev_stop (EV_A_ (W)w); 1559 ev_stop (EV_A_ (W)w);
1484} 1560}
… …
1522 ev_start (EV_A_ (W)w, ++periodiccnt); 1598 ev_start (EV_A_ (W)w, ++periodiccnt);
1523 array_needsize (ev_periodic *, periodics, periodicmax, periodiccnt, EMPTY2); 1599 array_needsize (ev_periodic *, periodics, periodicmax, periodiccnt, EMPTY2);
1524 periodics [periodiccnt - 1] = w; 1600 periodics [periodiccnt - 1] = w;
1525 upheap ((WT *)periodics, periodiccnt - 1); 1601 upheap ((WT *)periodics, periodiccnt - 1);
1526 1602
1527 assert (("internal periodic heap corruption", periodics [((W)w)->active - 1] == w)); 1603 /*assert (("internal periodic heap corruption", periodics [((W)w)->active - 1] == w));*/
1528} 1604}
1529 1605
1530void 1606void
1531ev_periodic_stop (EV_P_ ev_periodic *w) 1607ev_periodic_stop (EV_P_ ev_periodic *w)
1532{ 1608{
… …
1534 if (expect_false (!ev_is_active (w))) 1610 if (expect_false (!ev_is_active (w)))
1535 return; 1611 return;
1536 1612
1537 assert (("internal periodic heap corruption", periodics [((W)w)->active - 1] == w)); 1613 assert (("internal periodic heap corruption", periodics [((W)w)->active - 1] == w));
1538 1614
1615 {
1616 int active = ((W)w)->active;
1617
1539 if (expect_true (((W)w)->active < periodiccnt--)) 1618 if (expect_true (--active < --periodiccnt))
1540 { 1619 {
1541 periodics [((W)w)->active - 1] = periodics [periodiccnt]; 1620 periodics [active] = periodics [periodiccnt];
1542 adjustheap ((WT *)periodics, periodiccnt, ((W)w)->active - 1); 1621 adjustheap ((WT *)periodics, periodiccnt, active);
1543 } 1622 }
1623 }
1544 1624
1545 ev_stop (EV_A_ (W)w); 1625 ev_stop (EV_A_ (W)w);
1546} 1626}
1547 1627
1548void 1628void
… …
1551 /* TODO: use adjustheap and recalculation */ 1631 /* TODO: use adjustheap and recalculation */
1552 ev_periodic_stop (EV_A_ w); 1632 ev_periodic_stop (EV_A_ w);
1553 ev_periodic_start (EV_A_ w); 1633 ev_periodic_start (EV_A_ w);
1554} 1634}
1555#endif 1635#endif
1556
1557void
1558ev_idle_start (EV_P_ ev_idle *w)
1559{
1560 if (expect_false (ev_is_active (w)))
1561 return;
1562
1563 ev_start (EV_A_ (W)w, ++idlecnt);
1564 array_needsize (ev_idle *, idles, idlemax, idlecnt, EMPTY2);
1565 idles [idlecnt - 1] = w;
1566}
1567
1568void
1569ev_idle_stop (EV_P_ ev_idle *w)
1570{
1571 ev_clear_pending (EV_A_ (W)w);
1572 if (expect_false (!ev_is_active (w)))
1573 return;
1574
1575 {
1576 int active = ((W)w)->active;
1577 idles [active - 1] = idles [--idlecnt];
1578 ((W)idles [active - 1])->active = active;
1579 }
1580
1581 ev_stop (EV_A_ (W)w);
1582}
1583
1584void
1585ev_prepare_start (EV_P_ ev_prepare *w)
1586{
1587 if (expect_false (ev_is_active (w)))
1588 return;
1589
1590 ev_start (EV_A_ (W)w, ++preparecnt);
1591 array_needsize (ev_prepare *, prepares, preparemax, preparecnt, EMPTY2);
1592 prepares [preparecnt - 1] = w;
1593}
1594
1595void
1596ev_prepare_stop (EV_P_ ev_prepare *w)
1597{
1598 ev_clear_pending (EV_A_ (W)w);
1599 if (expect_false (!ev_is_active (w)))
1600 return;
1601
1602 {
1603 int active = ((W)w)->active;
1604 prepares [active - 1] = prepares [--preparecnt];
1605 ((W)prepares [active - 1])->active = active;
1606 }
1607
1608 ev_stop (EV_A_ (W)w);
1609}
1610
1611void
1612ev_check_start (EV_P_ ev_check *w)
1613{
1614 if (expect_false (ev_is_active (w)))
1615 return;
1616
1617 ev_start (EV_A_ (W)w, ++checkcnt);
1618 array_needsize (ev_check *, checks, checkmax, checkcnt, EMPTY2);
1619 checks [checkcnt - 1] = w;
1620}
1621
1622void
1623ev_check_stop (EV_P_ ev_check *w)
1624{
1625 ev_clear_pending (EV_A_ (W)w);
1626 if (expect_false (!ev_is_active (w)))
1627 return;
1628
1629 {
1630 int active = ((W)w)->active;
1631 checks [active - 1] = checks [--checkcnt];
1632 ((W)checks [active - 1])->active = active;
1633 }
1634
1635 ev_stop (EV_A_ (W)w);
1636}
1637 1636
1638#ifndef SA_RESTART 1637#ifndef SA_RESTART
1639# define SA_RESTART 0 1638# define SA_RESTART 0
1640#endif 1639#endif
1641 1640
… …
1690#endif 1689#endif
1691 if (expect_false (ev_is_active (w))) 1690 if (expect_false (ev_is_active (w)))
1692 return; 1691 return;
1693 1692
1694 ev_start (EV_A_ (W)w, 1); 1693 ev_start (EV_A_ (W)w, 1);
1695 wlist_add ((WL *)&childs [w->pid & (PID_HASHSIZE - 1)], (WL)w); 1694 wlist_add ((WL *)&childs [w->pid & (EV_PID_HASHSIZE - 1)], (WL)w);
1696} 1695}
1697 1696
1698void 1697void
1699ev_child_stop (EV_P_ ev_child *w) 1698ev_child_stop (EV_P_ ev_child *w)
1700{ 1699{
1701 ev_clear_pending (EV_A_ (W)w); 1700 ev_clear_pending (EV_A_ (W)w);
1702 if (expect_false (!ev_is_active (w))) 1701 if (expect_false (!ev_is_active (w)))
1703 return; 1702 return;
1704 1703
1705 wlist_del ((WL *)&childs [w->pid & (PID_HASHSIZE - 1)], (WL)w); 1704 wlist_del ((WL *)&childs [w->pid & (EV_PID_HASHSIZE - 1)], (WL)w);
1705 ev_stop (EV_A_ (W)w);
1706}
1707
1708#if EV_STAT_ENABLE
1709
1710# ifdef _WIN32
1711# undef lstat
1712# define lstat(a,b) _stati64 (a,b)
1713# endif
1714
1715#define DEF_STAT_INTERVAL 5.0074891
1716#define MIN_STAT_INTERVAL 0.1074891
1717
1718void noinline stat_timer_cb (EV_P_ ev_timer *w_, int revents);
1719
1720#if EV_USE_INOTIFY
1721# define EV_INOTIFY_BUFSIZE 8192
1722
1723static void noinline
1724infy_add (EV_P_ ev_stat *w)
1725{
1726 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);
1727
1728 if (w->wd < 0)
1729 {
1730 ev_timer_start (EV_A_ &w->timer); /* this is not race-free, so we still need to recheck periodically */
1731
1732 /* monitor some parent directory for speedup hints */
1733 if ((errno == ENOENT || errno == EACCES) && strlen (w->path) < 4096)
1734 {
1735 char path [4096];
1736 strcpy (path, w->path);
1737
1738 do
1739 {
1740 int mask = IN_MASK_ADD | IN_DELETE_SELF | IN_MOVE_SELF
1741 | (errno == EACCES ? IN_ATTRIB : IN_CREATE | IN_MOVED_TO);
1742
1743 char *pend = strrchr (path, '/');
1744
1745 if (!pend)
1746 break; /* whoops, no '/', complain to your admin */
1747
1748 *pend = 0;
1749 w->wd = inotify_add_watch (fs_fd, path, mask);
1750 }
1751 while (w->wd < 0 && (errno == ENOENT || errno == EACCES));
1752 }
1753 }
1754 else
1755 ev_timer_stop (EV_A_ &w->timer); /* we can watch this in a race-free way */
1756
1757 if (w->wd >= 0)
1758 wlist_add (&fs_hash [w->wd & (EV_INOTIFY_HASHSIZE - 1)].head, (WL)w);
1759}
1760
1761static void noinline
1762infy_del (EV_P_ ev_stat *w)
1763{
1764 int slot;
1765 int wd = w->wd;
1766
1767 if (wd < 0)
1768 return;
1769
1770 w->wd = -2;
1771 slot = wd & (EV_INOTIFY_HASHSIZE - 1);
1772 wlist_del (&fs_hash [slot].head, (WL)w);
1773
1774 /* remove this watcher, if others are watching it, they will rearm */
1775 inotify_rm_watch (fs_fd, wd);
1776}
1777
1778static void noinline
1779infy_wd (EV_P_ int slot, int wd, struct inotify_event *ev)
1780{
1781 if (slot < 0)
1782 /* overflow, need to check for all hahs slots */
1783 for (slot = 0; slot < EV_INOTIFY_HASHSIZE; ++slot)
1784 infy_wd (EV_A_ slot, wd, ev);
1785 else
1786 {
1787 WL w_;
1788
1789 for (w_ = fs_hash [slot & (EV_INOTIFY_HASHSIZE - 1)].head; w_; )
1790 {
1791 ev_stat *w = (ev_stat *)w_;
1792 w_ = w_->next; /* lets us remove this watcher and all before it */
1793
1794 if (w->wd == wd || wd == -1)
1795 {
1796 if (ev->mask & (IN_IGNORED | IN_UNMOUNT | IN_DELETE_SELF))
1797 {
1798 w->wd = -1;
1799 infy_add (EV_A_ w); /* re-add, no matter what */
1800 }
1801
1802 stat_timer_cb (EV_A_ &w->timer, 0);
1803 }
1804 }
1805 }
1806}
1807
1808static void
1809infy_cb (EV_P_ ev_io *w, int revents)
1810{
1811 char buf [EV_INOTIFY_BUFSIZE];
1812 struct inotify_event *ev = (struct inotify_event *)buf;
1813 int ofs;
1814 int len = read (fs_fd, buf, sizeof (buf));
1815
1816 for (ofs = 0; ofs < len; ofs += sizeof (struct inotify_event) + ev->len)
1817 infy_wd (EV_A_ ev->wd, ev->wd, ev);
1818}
1819
1820void inline_size
1821infy_init (EV_P)
1822{
1823 if (fs_fd != -2)
1824 return;
1825
1826 fs_fd = inotify_init ();
1827
1828 if (fs_fd >= 0)
1829 {
1830 ev_io_init (&fs_w, infy_cb, fs_fd, EV_READ);
1831 ev_set_priority (&fs_w, EV_MAXPRI);
1832 ev_io_start (EV_A_ &fs_w);
1833 }
1834}
1835
1836#endif
1837
1838void
1839ev_stat_stat (EV_P_ ev_stat *w)
1840{
1841 if (lstat (w->path, &w->attr) < 0)
1842 w->attr.st_nlink = 0;
1843 else if (!w->attr.st_nlink)
1844 w->attr.st_nlink = 1;
1845}
1846
1847void noinline
1848stat_timer_cb (EV_P_ ev_timer *w_, int revents)
1849{
1850 ev_stat *w = (ev_stat *)(((char *)w_) - offsetof (ev_stat, timer));
1851
1852 /* we copy this here each the time so that */
1853 /* prev has the old value when the callback gets invoked */
1854 w->prev = w->attr;
1855 ev_stat_stat (EV_A_ w);
1856
1857 if (memcmp (&w->prev, &w->attr, sizeof (ev_statdata)))
1858 {
1859 #if EV_USE_INOTIFY
1860 infy_del (EV_A_ w);
1861 infy_add (EV_A_ w);
1862 ev_stat_stat (EV_A_ w); /* avoid race... */
1863 #endif
1864
1865 ev_feed_event (EV_A_ w, EV_STAT);
1866 }
1867}
1868
1869void
1870ev_stat_start (EV_P_ ev_stat *w)
1871{
1872 if (expect_false (ev_is_active (w)))
1873 return;
1874
1875 /* since we use memcmp, we need to clear any padding data etc. */
1876 memset (&w->prev, 0, sizeof (ev_statdata));
1877 memset (&w->attr, 0, sizeof (ev_statdata));
1878
1879 ev_stat_stat (EV_A_ w);
1880
1881 if (w->interval < MIN_STAT_INTERVAL)
1882 w->interval = w->interval ? MIN_STAT_INTERVAL : DEF_STAT_INTERVAL;
1883
1884 ev_timer_init (&w->timer, stat_timer_cb, w->interval, w->interval);
1885 ev_set_priority (&w->timer, ev_priority (w));
1886
1887#if EV_USE_INOTIFY
1888 infy_init (EV_A);
1889
1890 if (fs_fd >= 0)
1891 infy_add (EV_A_ w);
1892 else
1893#endif
1894 ev_timer_start (EV_A_ &w->timer);
1895
1896 ev_start (EV_A_ (W)w, 1);
1897}
1898
1899void
1900ev_stat_stop (EV_P_ ev_stat *w)
1901{
1902 ev_clear_pending (EV_A_ (W)w);
1903 if (expect_false (!ev_is_active (w)))
1904 return;
1905
1906#if EV_USE_INOTIFY
1907 infy_del (EV_A_ w);
1908#endif
1909 ev_timer_stop (EV_A_ &w->timer);
1910
1911 ev_stop (EV_A_ (W)w);
1912}
1913#endif
1914
1915void
1916ev_idle_start (EV_P_ ev_idle *w)
1917{
1918 if (expect_false (ev_is_active (w)))
1919 return;
1920
1921 ev_start (EV_A_ (W)w, ++idlecnt);
1922 array_needsize (ev_idle *, idles, idlemax, idlecnt, EMPTY2);
1923 idles [idlecnt - 1] = w;
1924}
1925
1926void
1927ev_idle_stop (EV_P_ ev_idle *w)
1928{
1929 ev_clear_pending (EV_A_ (W)w);
1930 if (expect_false (!ev_is_active (w)))
1931 return;
1932
1933 {
1934 int active = ((W)w)->active;
1935 idles [active - 1] = idles [--idlecnt];
1936 ((W)idles [active - 1])->active = active;
1937 }
1938
1939 ev_stop (EV_A_ (W)w);
1940}
1941
1942void
1943ev_prepare_start (EV_P_ ev_prepare *w)
1944{
1945 if (expect_false (ev_is_active (w)))
1946 return;
1947
1948 ev_start (EV_A_ (W)w, ++preparecnt);
1949 array_needsize (ev_prepare *, prepares, preparemax, preparecnt, EMPTY2);
1950 prepares [preparecnt - 1] = w;
1951}
1952
1953void
1954ev_prepare_stop (EV_P_ ev_prepare *w)
1955{
1956 ev_clear_pending (EV_A_ (W)w);
1957 if (expect_false (!ev_is_active (w)))
1958 return;
1959
1960 {
1961 int active = ((W)w)->active;
1962 prepares [active - 1] = prepares [--preparecnt];
1963 ((W)prepares [active - 1])->active = active;
1964 }
1965
1966 ev_stop (EV_A_ (W)w);
1967}
1968
1969void
1970ev_check_start (EV_P_ ev_check *w)
1971{
1972 if (expect_false (ev_is_active (w)))
1973 return;
1974
1975 ev_start (EV_A_ (W)w, ++checkcnt);
1976 array_needsize (ev_check *, checks, checkmax, checkcnt, EMPTY2);
1977 checks [checkcnt - 1] = w;
1978}
1979
1980void
1981ev_check_stop (EV_P_ ev_check *w)
1982{
1983 ev_clear_pending (EV_A_ (W)w);
1984 if (expect_false (!ev_is_active (w)))
1985 return;
1986
1987 {
1988 int active = ((W)w)->active;
1989 checks [active - 1] = checks [--checkcnt];
1990 ((W)checks [active - 1])->active = active;
1991 }
1992
1706 ev_stop (EV_A_ (W)w); 1993 ev_stop (EV_A_ (W)w);
1707} 1994}
1708 1995
1709#if EV_EMBED_ENABLE 1996#if EV_EMBED_ENABLE
1710void noinline 1997void noinline
… …
1753 2040
1754 ev_stop (EV_A_ (W)w); 2041 ev_stop (EV_A_ (W)w);
1755} 2042}
1756#endif 2043#endif
1757 2044
1758#if EV_STAT_ENABLE 2045#if EV_FORK_ENABLE
1759
1760# ifdef _WIN32
1761# define lstat(a,b) stat(a,b)
1762# endif
1763
1764void 2046void
1765ev_stat_stat (EV_P_ ev_stat *w)
1766{
1767 if (lstat (w->path, &w->attr) < 0)
1768 w->attr.st_nlink = 0;
1769 else if (!w->attr.st_nlink)
1770 w->attr.st_nlink = 1;
1771}
1772
1773static void
1774stat_timer_cb (EV_P_ ev_timer *w_, int revents)
1775{
1776 ev_stat *w = (ev_stat *)(((char *)w_) - offsetof (ev_stat, timer));
1777
1778 /* we copy this here each the time so that */
1779 /* prev has the old value when the callback gets invoked */
1780 w->prev = w->attr;
1781 ev_stat_stat (EV_A_ w);
1782
1783 if (memcmp (&w->prev, &w->attr, sizeof (ev_statdata)))
1784 ev_feed_event (EV_A_ w, EV_STAT);
1785}
1786
1787void
1788ev_stat_start (EV_P_ ev_stat *w) 2047ev_fork_start (EV_P_ ev_fork *w)
1789{ 2048{
1790 if (expect_false (ev_is_active (w))) 2049 if (expect_false (ev_is_active (w)))
1791 return; 2050 return;
1792 2051
1793 /* since we use memcmp, we need to clear any padding data etc. */
1794 memset (&w->prev, 0, sizeof (ev_statdata));
1795 memset (&w->attr, 0, sizeof (ev_statdata));
1796
1797 ev_stat_stat (EV_A_ w);
1798
1799 ev_timer_init (&w->timer, stat_timer_cb, w->interval, w->interval);
1800 ev_set_priority (&w->timer, ev_priority (w));
1801 ev_timer_start (EV_A_ &w->timer);
1802
1803 ev_start (EV_A_ (W)w, 1); 2052 ev_start (EV_A_ (W)w, ++forkcnt);
2053 array_needsize (ev_fork *, forks, forkmax, forkcnt, EMPTY2);
2054 forks [forkcnt - 1] = w;
1804} 2055}
1805 2056
1806void 2057void
1807ev_stat_stop (EV_P_ ev_stat *w) 2058ev_fork_stop (EV_P_ ev_fork *w)
1808{ 2059{
1809 ev_clear_pending (EV_A_ (W)w); 2060 ev_clear_pending (EV_A_ (W)w);
1810 if (expect_false (!ev_is_active (w))) 2061 if (expect_false (!ev_is_active (w)))
1811 return; 2062 return;
1812 2063
1813 ev_timer_stop (EV_A_ &w->timer); 2064 {
2065 int active = ((W)w)->active;
2066 forks [active - 1] = forks [--forkcnt];
2067 ((W)forks [active - 1])->active = active;
2068 }
1814 2069
1815 ev_stop (EV_A_ (W)w); 2070 ev_stop (EV_A_ (W)w);
1816} 2071}
1817#endif 2072#endif
1818 2073

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