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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 1.163 by root, Wed Dec 5 13:54:36 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
… …
247 } 283 }
248} 284}
249 285
250static void *(*alloc)(void *ptr, long size); 286static void *(*alloc)(void *ptr, long size);
251 287
288void
252void ev_set_allocator (void *(*cb)(void *ptr, long size)) 289ev_set_allocator (void *(*cb)(void *ptr, long 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, long size)
259{ 296{
260 ptr = alloc ? alloc (ptr, size) : realloc (ptr, size); 297 ptr = alloc ? alloc (ptr, size) : realloc (ptr, size);
261 298
262 if (!ptr && size) 299 if (!ptr && size)
… …
286typedef struct 323typedef struct
287{ 324{
288 W w; 325 W w;
289 int events; 326 int events;
290} ANPENDING; 327} ANPENDING;
328
329#if EV_USE_INOTIFY
330typedef struct
331{
332 WL head;
333} ANFS;
334#endif
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);
… …
352{ 396{
353 return ev_rt_now; 397 return ev_rt_now;
354} 398}
355#endif 399#endif
356 400
357#define array_roundsize(type,n) (((n) | 4) & ~3) 401int inline_size
402array_nextsize (int elem, int cur, int cnt)
403{
404 int ncur = cur + 1;
405
406 do
407 ncur <<= 1;
408 while (cnt > ncur);
409
410 /* if size > 4096, round to 4096 - 4 * longs to accomodate malloc overhead */
411 if (elem * ncur > 4096)
412 {
413 ncur *= elem;
414 ncur = (ncur + elem + 4095 + sizeof (void *) * 4) & ~4095;
415 ncur = ncur - sizeof (void *) * 4;
416 ncur /= elem;
417 }
418
419 return ncur;
420}
421
422inline_speed void *
423array_realloc (int elem, void *base, int *cur, int cnt)
424{
425 *cur = array_nextsize (elem, *cur, cnt);
426 return ev_realloc (base, elem * *cur);
427}
358 428
359#define array_needsize(type,base,cur,cnt,init) \ 429#define array_needsize(type,base,cur,cnt,init) \
360 if (expect_false ((cnt) > cur)) \ 430 if (expect_false ((cnt) > (cur))) \
361 { \ 431 { \
362 int newcnt = cur; \ 432 int ocur_ = (cur); \
363 do \ 433 (base) = (type *)array_realloc \
364 { \ 434 (sizeof (type), (base), &(cur), (cnt)); \
365 newcnt = array_roundsize (type, newcnt << 1); \ 435 init ((base) + (ocur_), (cur) - ocur_); \
366 } \
367 while ((cnt) > newcnt); \
368 \
369 base = (type *)ev_realloc (base, sizeof (type) * (newcnt));\
370 init (base + cur, newcnt - cur); \
371 cur = newcnt; \
372 } 436 }
373 437
438#if 0
374#define array_slim(type,stem) \ 439#define array_slim(type,stem) \
375 if (stem ## max < array_roundsize (stem ## cnt >> 2)) \ 440 if (stem ## max < array_roundsize (stem ## cnt >> 2)) \
376 { \ 441 { \
377 stem ## max = array_roundsize (stem ## cnt >> 1); \ 442 stem ## max = array_roundsize (stem ## cnt >> 1); \
378 base = (type *)ev_realloc (base, sizeof (type) * (stem ## max));\ 443 base = (type *)ev_realloc (base, sizeof (type) * (stem ## max));\
379 fprintf (stderr, "slimmed down " # stem " to %d\n", stem ## max);/*D*/\ 444 fprintf (stderr, "slimmed down " # stem " to %d\n", stem ## max);/*D*/\
380 } 445 }
446#endif
381 447
382#define array_free(stem, idx) \ 448#define array_free(stem, idx) \
383 ev_free (stem ## s idx); stem ## cnt idx = stem ## max idx = 0; 449 ev_free (stem ## s idx); stem ## cnt idx = stem ## max idx = 0;
384 450
385/*****************************************************************************/ 451/*****************************************************************************/
386
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}
399 452
400void noinline 453void noinline
401ev_feed_event (EV_P_ void *w, int revents) 454ev_feed_event (EV_P_ void *w, int revents)
402{ 455{
403 W w_ = (W)w; 456 W w_ = (W)w;
… …
412 array_needsize (ANPENDING, pendings [ABSPRI (w_)], pendingmax [ABSPRI (w_)], pendingcnt [ABSPRI (w_)], EMPTY2); 465 array_needsize (ANPENDING, pendings [ABSPRI (w_)], pendingmax [ABSPRI (w_)], pendingcnt [ABSPRI (w_)], EMPTY2);
413 pendings [ABSPRI (w_)][w_->pending - 1].w = w_; 466 pendings [ABSPRI (w_)][w_->pending - 1].w = w_;
414 pendings [ABSPRI (w_)][w_->pending - 1].events = revents; 467 pendings [ABSPRI (w_)][w_->pending - 1].events = revents;
415} 468}
416 469
417static void 470void inline_size
418queue_events (EV_P_ W *events, int eventcnt, int type) 471queue_events (EV_P_ W *events, int eventcnt, int type)
419{ 472{
420 int i; 473 int i;
421 474
422 for (i = 0; i < eventcnt; ++i) 475 for (i = 0; i < eventcnt; ++i)
423 ev_feed_event (EV_A_ events [i], type); 476 ev_feed_event (EV_A_ events [i], type);
424} 477}
425 478
479/*****************************************************************************/
480
481void inline_size
482anfds_init (ANFD *base, int count)
483{
484 while (count--)
485 {
486 base->head = 0;
487 base->events = EV_NONE;
488 base->reify = 0;
489
490 ++base;
491 }
492}
493
426void inline_speed 494void inline_speed
427fd_event (EV_P_ int fd, int revents) 495fd_event (EV_P_ int fd, int revents)
428{ 496{
429 ANFD *anfd = anfds + fd; 497 ANFD *anfd = anfds + fd;
430 ev_io *w; 498 ev_io *w;
… …
441void 509void
442ev_feed_fd_event (EV_P_ int fd, int revents) 510ev_feed_fd_event (EV_P_ int fd, int revents)
443{ 511{
444 fd_event (EV_A_ fd, revents); 512 fd_event (EV_A_ fd, revents);
445} 513}
446
447/*****************************************************************************/
448 514
449void inline_size 515void inline_size
450fd_reify (EV_P) 516fd_reify (EV_P)
451{ 517{
452 int i; 518 int i;
… …
545static void noinline 611static void noinline
546fd_rearm_all (EV_P) 612fd_rearm_all (EV_P)
547{ 613{
548 int fd; 614 int fd;
549 615
550 /* this should be highly optimised to not do anything but set a flag */
551 for (fd = 0; fd < anfdmax; ++fd) 616 for (fd = 0; fd < anfdmax; ++fd)
552 if (anfds [fd].events) 617 if (anfds [fd].events)
553 { 618 {
554 anfds [fd].events = 0; 619 anfds [fd].events = 0;
555 fd_change (EV_A_ fd); 620 fd_change (EV_A_ fd);
… …
707 ev_unref (EV_A); /* child watcher should not keep loop alive */ 772 ev_unref (EV_A); /* child watcher should not keep loop alive */
708} 773}
709 774
710/*****************************************************************************/ 775/*****************************************************************************/
711 776
712static ev_child *childs [PID_HASHSIZE]; 777static ev_child *childs [EV_PID_HASHSIZE];
713 778
714#ifndef _WIN32 779#ifndef _WIN32
715 780
716static ev_signal childev; 781static ev_signal childev;
717
718#ifndef WCONTINUED
719# define WCONTINUED 0
720#endif
721 782
722void inline_speed 783void inline_speed
723child_reap (EV_P_ ev_signal *sw, int chain, int pid, int status) 784child_reap (EV_P_ ev_signal *sw, int chain, int pid, int status)
724{ 785{
725 ev_child *w; 786 ev_child *w;
726 787
727 for (w = (ev_child *)childs [chain & (PID_HASHSIZE - 1)]; w; w = (ev_child *)((WL)w)->next) 788 for (w = (ev_child *)childs [chain & (EV_PID_HASHSIZE - 1)]; w; w = (ev_child *)((WL)w)->next)
728 if (w->pid == pid || !w->pid) 789 if (w->pid == pid || !w->pid)
729 { 790 {
730 ev_priority (w) = ev_priority (sw); /* need to do it *now* */ 791 ev_priority (w) = ev_priority (sw); /* need to do it *now* */
731 w->rpid = pid; 792 w->rpid = pid;
732 w->rstatus = status; 793 w->rstatus = status;
733 ev_feed_event (EV_A_ (W)w, EV_CHILD); 794 ev_feed_event (EV_A_ (W)w, EV_CHILD);
734 } 795 }
735} 796}
736 797
798#ifndef WCONTINUED
799# define WCONTINUED 0
800#endif
801
737static void 802static void
738childcb (EV_P_ ev_signal *sw, int revents) 803childcb (EV_P_ ev_signal *sw, int revents)
739{ 804{
740 int pid, status; 805 int pid, status;
741 806
807 /* some systems define WCONTINUED but then fail to support it (linux 2.4) */
742 if (0 < (pid = waitpid (-1, &status, WNOHANG | WUNTRACED | WCONTINUED))) 808 if (0 >= (pid = waitpid (-1, &status, WNOHANG | WUNTRACED | WCONTINUED)))
743 { 809 if (!WCONTINUED
810 || errno != EINVAL
811 || 0 >= (pid = waitpid (-1, &status, WNOHANG | WUNTRACED)))
812 return;
813
744 /* make sure we are called again until all childs have been reaped */ 814 /* 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 */ 815 /* 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); 816 ev_feed_event (EV_A_ (W)sw, EV_SIGNAL);
747 817
748 child_reap (EV_A_ sw, pid, pid, status); 818 child_reap (EV_A_ sw, pid, pid, status);
819 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 */ 820 child_reap (EV_A_ sw, 0, pid, status); /* this might trigger a watcher twice, but feed_event catches that */
750 }
751} 821}
752 822
753#endif 823#endif
754 824
755/*****************************************************************************/ 825/*****************************************************************************/
… …
838ev_backend (EV_P) 908ev_backend (EV_P)
839{ 909{
840 return backend; 910 return backend;
841} 911}
842 912
843static void 913unsigned int
914ev_loop_count (EV_P)
915{
916 return loop_count;
917}
918
919static void noinline
844loop_init (EV_P_ unsigned int flags) 920loop_init (EV_P_ unsigned int flags)
845{ 921{
846 if (!backend) 922 if (!backend)
847 { 923 {
848#if EV_USE_MONOTONIC 924#if EV_USE_MONOTONIC
… …
856 ev_rt_now = ev_time (); 932 ev_rt_now = ev_time ();
857 mn_now = get_clock (); 933 mn_now = get_clock ();
858 now_floor = mn_now; 934 now_floor = mn_now;
859 rtmn_diff = ev_rt_now - mn_now; 935 rtmn_diff = ev_rt_now - mn_now;
860 936
937 /* pid check not overridable via env */
938#ifndef _WIN32
939 if (flags & EVFLAG_FORKCHECK)
940 curpid = getpid ();
941#endif
942
861 if (!(flags & EVFLAG_NOENV) 943 if (!(flags & EVFLAG_NOENV)
862 && !enable_secure () 944 && !enable_secure ()
863 && getenv ("LIBEV_FLAGS")) 945 && getenv ("LIBEV_FLAGS"))
864 flags = atoi (getenv ("LIBEV_FLAGS")); 946 flags = atoi (getenv ("LIBEV_FLAGS"));
865 947
866 if (!(flags & 0x0000ffffUL)) 948 if (!(flags & 0x0000ffffUL))
867 flags |= ev_recommended_backends (); 949 flags |= ev_recommended_backends ();
868 950
869 backend = 0; 951 backend = 0;
952 backend_fd = -1;
953#if EV_USE_INOTIFY
954 fs_fd = -2;
955#endif
956
870#if EV_USE_PORT 957#if EV_USE_PORT
871 if (!backend && (flags & EVBACKEND_PORT )) backend = port_init (EV_A_ flags); 958 if (!backend && (flags & EVBACKEND_PORT )) backend = port_init (EV_A_ flags);
872#endif 959#endif
873#if EV_USE_KQUEUE 960#if EV_USE_KQUEUE
874 if (!backend && (flags & EVBACKEND_KQUEUE)) backend = kqueue_init (EV_A_ flags); 961 if (!backend && (flags & EVBACKEND_KQUEUE)) backend = kqueue_init (EV_A_ flags);
… …
886 ev_init (&sigev, sigcb); 973 ev_init (&sigev, sigcb);
887 ev_set_priority (&sigev, EV_MAXPRI); 974 ev_set_priority (&sigev, EV_MAXPRI);
888 } 975 }
889} 976}
890 977
891static void 978static void noinline
892loop_destroy (EV_P) 979loop_destroy (EV_P)
893{ 980{
894 int i; 981 int i;
982
983#if EV_USE_INOTIFY
984 if (fs_fd >= 0)
985 close (fs_fd);
986#endif
987
988 if (backend_fd >= 0)
989 close (backend_fd);
895 990
896#if EV_USE_PORT 991#if EV_USE_PORT
897 if (backend == EVBACKEND_PORT ) port_destroy (EV_A); 992 if (backend == EVBACKEND_PORT ) port_destroy (EV_A);
898#endif 993#endif
899#if EV_USE_KQUEUE 994#if EV_USE_KQUEUE
… …
923 array_free (check, EMPTY0); 1018 array_free (check, EMPTY0);
924 1019
925 backend = 0; 1020 backend = 0;
926} 1021}
927 1022
928static void 1023void inline_size infy_fork (EV_P);
1024
1025void inline_size
929loop_fork (EV_P) 1026loop_fork (EV_P)
930{ 1027{
931#if EV_USE_PORT 1028#if EV_USE_PORT
932 if (backend == EVBACKEND_PORT ) port_fork (EV_A); 1029 if (backend == EVBACKEND_PORT ) port_fork (EV_A);
933#endif 1030#endif
934#if EV_USE_KQUEUE 1031#if EV_USE_KQUEUE
935 if (backend == EVBACKEND_KQUEUE) kqueue_fork (EV_A); 1032 if (backend == EVBACKEND_KQUEUE) kqueue_fork (EV_A);
936#endif 1033#endif
937#if EV_USE_EPOLL 1034#if EV_USE_EPOLL
938 if (backend == EVBACKEND_EPOLL ) epoll_fork (EV_A); 1035 if (backend == EVBACKEND_EPOLL ) epoll_fork (EV_A);
1036#endif
1037#if EV_USE_INOTIFY
1038 infy_fork (EV_A);
939#endif 1039#endif
940 1040
941 if (ev_is_active (&sigev)) 1041 if (ev_is_active (&sigev))
942 { 1042 {
943 /* default loop */ 1043 /* default loop */
… …
1083 { 1183 {
1084 ANPENDING *p = pendings [pri] + --pendingcnt [pri]; 1184 ANPENDING *p = pendings [pri] + --pendingcnt [pri];
1085 1185
1086 if (expect_true (p->w)) 1186 if (expect_true (p->w))
1087 { 1187 {
1088 assert (("non-pending watcher on pending list", p->w->pending)); 1188 /*assert (("non-pending watcher on pending list", p->w->pending));*/
1089 1189
1090 p->w->pending = 0; 1190 p->w->pending = 0;
1091 EV_CB_INVOKE (p->w, p->events); 1191 EV_CB_INVOKE (p->w, p->events);
1092 } 1192 }
1093 } 1193 }
… …
1098{ 1198{
1099 while (timercnt && ((WT)timers [0])->at <= mn_now) 1199 while (timercnt && ((WT)timers [0])->at <= mn_now)
1100 { 1200 {
1101 ev_timer *w = timers [0]; 1201 ev_timer *w = timers [0];
1102 1202
1103 assert (("inactive timer on timer heap detected", ev_is_active (w))); 1203 /*assert (("inactive timer on timer heap detected", ev_is_active (w)));*/
1104 1204
1105 /* first reschedule or stop timer */ 1205 /* first reschedule or stop timer */
1106 if (w->repeat) 1206 if (w->repeat)
1107 { 1207 {
1108 assert (("negative ev_timer repeat value found while processing timers", w->repeat > 0.)); 1208 assert (("negative ev_timer repeat value found while processing timers", w->repeat > 0.));
… …
1126{ 1226{
1127 while (periodiccnt && ((WT)periodics [0])->at <= ev_rt_now) 1227 while (periodiccnt && ((WT)periodics [0])->at <= ev_rt_now)
1128 { 1228 {
1129 ev_periodic *w = periodics [0]; 1229 ev_periodic *w = periodics [0];
1130 1230
1131 assert (("inactive timer on periodic heap detected", ev_is_active (w))); 1231 /*assert (("inactive timer on periodic heap detected", ev_is_active (w)));*/
1132 1232
1133 /* first reschedule or stop timer */ 1233 /* first reschedule or stop timer */
1134 if (w->reschedule_cb) 1234 if (w->reschedule_cb)
1135 { 1235 {
1136 ((WT)w)->at = w->reschedule_cb (w, ev_rt_now + 0.0001); 1236 ((WT)w)->at = w->reschedule_cb (w, ev_rt_now + 0.0001);
… …
1203 ev_tstamp odiff = rtmn_diff; 1303 ev_tstamp odiff = rtmn_diff;
1204 1304
1205 /* loop a few times, before making important decisions. 1305 /* loop a few times, before making important decisions.
1206 * on the choice of "4": one iteration isn't enough, 1306 * on the choice of "4": one iteration isn't enough,
1207 * in case we get preempted during the calls to 1307 * in case we get preempted during the calls to
1208 * ev_time and get_clock. a second call is almost guarenteed 1308 * ev_time and get_clock. a second call is almost guaranteed
1209 * to succeed in that case, though. and looping a few more times 1309 * to succeed in that case, though. and looping a few more times
1210 * doesn't hurt either as we only do this on time-jumps or 1310 * doesn't hurt either as we only do this on time-jumps or
1211 * in the unlikely event of getting preempted here. 1311 * in the unlikely event of having been preempted here.
1212 */ 1312 */
1213 for (i = 4; --i; ) 1313 for (i = 4; --i; )
1214 { 1314 {
1215 rtmn_diff = ev_rt_now - mn_now; 1315 rtmn_diff = ev_rt_now - mn_now;
1216 1316
… …
1238 { 1338 {
1239#if EV_PERIODIC_ENABLE 1339#if EV_PERIODIC_ENABLE
1240 periodics_reschedule (EV_A); 1340 periodics_reschedule (EV_A);
1241#endif 1341#endif
1242 1342
1243 /* adjust timers. this is easy, as the offset is the same for all */ 1343 /* adjust timers. this is easy, as the offset is the same for all of them */
1244 for (i = 0; i < timercnt; ++i) 1344 for (i = 0; i < timercnt; ++i)
1245 ((WT)timers [i])->at += ev_rt_now - mn_now; 1345 ((WT)timers [i])->at += ev_rt_now - mn_now;
1246 } 1346 }
1247 1347
1248 mn_now = ev_rt_now; 1348 mn_now = ev_rt_now;
… …
1268{ 1368{
1269 loop_done = flags & (EVLOOP_ONESHOT | EVLOOP_NONBLOCK) 1369 loop_done = flags & (EVLOOP_ONESHOT | EVLOOP_NONBLOCK)
1270 ? EVUNLOOP_ONE 1370 ? EVUNLOOP_ONE
1271 : EVUNLOOP_CANCEL; 1371 : EVUNLOOP_CANCEL;
1272 1372
1273 while (activecnt) 1373 call_pending (EV_A); /* in case we recurse, ensure ordering stays nice and clean */
1374
1375 do
1274 { 1376 {
1377#ifndef _WIN32
1378 if (expect_false (curpid)) /* penalise the forking check even more */
1379 if (expect_false (getpid () != curpid))
1380 {
1381 curpid = getpid ();
1382 postfork = 1;
1383 }
1384#endif
1385
1386#if EV_FORK_ENABLE
1387 /* we might have forked, so queue fork handlers */
1388 if (expect_false (postfork))
1389 if (forkcnt)
1390 {
1391 queue_events (EV_A_ (W *)forks, forkcnt, EV_FORK);
1392 call_pending (EV_A);
1393 }
1394#endif
1395
1275 /* queue check watchers (and execute them) */ 1396 /* queue check watchers (and execute them) */
1276 if (expect_false (preparecnt)) 1397 if (expect_false (preparecnt))
1277 { 1398 {
1278 queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE); 1399 queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE);
1279 call_pending (EV_A); 1400 call_pending (EV_A);
1280 } 1401 }
1281 1402
1403 if (expect_false (!activecnt))
1404 break;
1405
1282 /* we might have forked, so reify kernel state if necessary */ 1406 /* we might have forked, so reify kernel state if necessary */
1283 if (expect_false (postfork)) 1407 if (expect_false (postfork))
1284 loop_fork (EV_A); 1408 loop_fork (EV_A);
1285 1409
1286 /* update fd-related kernel structures */ 1410 /* update fd-related kernel structures */
1287 fd_reify (EV_A); 1411 fd_reify (EV_A);
1288 1412
1289 /* calculate blocking time */ 1413 /* calculate blocking time */
1290 { 1414 {
1291 double block; 1415 ev_tstamp block;
1292 1416
1293 if (flags & EVLOOP_NONBLOCK || idlecnt) 1417 if (expect_false (flags & EVLOOP_NONBLOCK || idlecnt || !activecnt))
1294 block = 0.; /* do not block at all */ 1418 block = 0.; /* do not block at all */
1295 else 1419 else
1296 { 1420 {
1297 /* update time to cancel out callback processing overhead */ 1421 /* update time to cancel out callback processing overhead */
1298#if EV_USE_MONOTONIC 1422#if EV_USE_MONOTONIC
… …
1322#endif 1446#endif
1323 1447
1324 if (expect_false (block < 0.)) block = 0.; 1448 if (expect_false (block < 0.)) block = 0.;
1325 } 1449 }
1326 1450
1451 ++loop_count;
1327 backend_poll (EV_A_ block); 1452 backend_poll (EV_A_ block);
1328 } 1453 }
1329 1454
1330 /* update ev_rt_now, do magic */ 1455 /* update ev_rt_now, do magic */
1331 time_update (EV_A); 1456 time_update (EV_A);
… …
1344 if (expect_false (checkcnt)) 1469 if (expect_false (checkcnt))
1345 queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK); 1470 queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK);
1346 1471
1347 call_pending (EV_A); 1472 call_pending (EV_A);
1348 1473
1349 if (expect_false (loop_done))
1350 break;
1351 } 1474 }
1475 while (expect_true (activecnt && !loop_done));
1352 1476
1353 if (loop_done == EVUNLOOP_ONE) 1477 if (loop_done == EVUNLOOP_ONE)
1354 loop_done = EVUNLOOP_CANCEL; 1478 loop_done = EVUNLOOP_CANCEL;
1355} 1479}
1356 1480
… …
1458 ev_start (EV_A_ (W)w, ++timercnt); 1582 ev_start (EV_A_ (W)w, ++timercnt);
1459 array_needsize (ev_timer *, timers, timermax, timercnt, EMPTY2); 1583 array_needsize (ev_timer *, timers, timermax, timercnt, EMPTY2);
1460 timers [timercnt - 1] = w; 1584 timers [timercnt - 1] = w;
1461 upheap ((WT *)timers, timercnt - 1); 1585 upheap ((WT *)timers, timercnt - 1);
1462 1586
1463 assert (("internal timer heap corruption", timers [((W)w)->active - 1] == w)); 1587 /*assert (("internal timer heap corruption", timers [((W)w)->active - 1] == w));*/
1464} 1588}
1465 1589
1466void 1590void
1467ev_timer_stop (EV_P_ ev_timer *w) 1591ev_timer_stop (EV_P_ ev_timer *w)
1468{ 1592{
… …
1470 if (expect_false (!ev_is_active (w))) 1594 if (expect_false (!ev_is_active (w)))
1471 return; 1595 return;
1472 1596
1473 assert (("internal timer heap corruption", timers [((W)w)->active - 1] == w)); 1597 assert (("internal timer heap corruption", timers [((W)w)->active - 1] == w));
1474 1598
1599 {
1600 int active = ((W)w)->active;
1601
1475 if (expect_true (((W)w)->active < timercnt--)) 1602 if (expect_true (--active < --timercnt))
1476 { 1603 {
1477 timers [((W)w)->active - 1] = timers [timercnt]; 1604 timers [active] = timers [timercnt];
1478 adjustheap ((WT *)timers, timercnt, ((W)w)->active - 1); 1605 adjustheap ((WT *)timers, timercnt, active);
1479 } 1606 }
1607 }
1480 1608
1481 ((WT)w)->at -= mn_now; 1609 ((WT)w)->at -= mn_now;
1482 1610
1483 ev_stop (EV_A_ (W)w); 1611 ev_stop (EV_A_ (W)w);
1484} 1612}
… …
1522 ev_start (EV_A_ (W)w, ++periodiccnt); 1650 ev_start (EV_A_ (W)w, ++periodiccnt);
1523 array_needsize (ev_periodic *, periodics, periodicmax, periodiccnt, EMPTY2); 1651 array_needsize (ev_periodic *, periodics, periodicmax, periodiccnt, EMPTY2);
1524 periodics [periodiccnt - 1] = w; 1652 periodics [periodiccnt - 1] = w;
1525 upheap ((WT *)periodics, periodiccnt - 1); 1653 upheap ((WT *)periodics, periodiccnt - 1);
1526 1654
1527 assert (("internal periodic heap corruption", periodics [((W)w)->active - 1] == w)); 1655 /*assert (("internal periodic heap corruption", periodics [((W)w)->active - 1] == w));*/
1528} 1656}
1529 1657
1530void 1658void
1531ev_periodic_stop (EV_P_ ev_periodic *w) 1659ev_periodic_stop (EV_P_ ev_periodic *w)
1532{ 1660{
… …
1534 if (expect_false (!ev_is_active (w))) 1662 if (expect_false (!ev_is_active (w)))
1535 return; 1663 return;
1536 1664
1537 assert (("internal periodic heap corruption", periodics [((W)w)->active - 1] == w)); 1665 assert (("internal periodic heap corruption", periodics [((W)w)->active - 1] == w));
1538 1666
1667 {
1668 int active = ((W)w)->active;
1669
1539 if (expect_true (((W)w)->active < periodiccnt--)) 1670 if (expect_true (--active < --periodiccnt))
1540 { 1671 {
1541 periodics [((W)w)->active - 1] = periodics [periodiccnt]; 1672 periodics [active] = periodics [periodiccnt];
1542 adjustheap ((WT *)periodics, periodiccnt, ((W)w)->active - 1); 1673 adjustheap ((WT *)periodics, periodiccnt, active);
1543 } 1674 }
1675 }
1544 1676
1545 ev_stop (EV_A_ (W)w); 1677 ev_stop (EV_A_ (W)w);
1546} 1678}
1547 1679
1548void 1680void
… …
1551 /* TODO: use adjustheap and recalculation */ 1683 /* TODO: use adjustheap and recalculation */
1552 ev_periodic_stop (EV_A_ w); 1684 ev_periodic_stop (EV_A_ w);
1553 ev_periodic_start (EV_A_ w); 1685 ev_periodic_start (EV_A_ w);
1554} 1686}
1555#endif 1687#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 1688
1638#ifndef SA_RESTART 1689#ifndef SA_RESTART
1639# define SA_RESTART 0 1690# define SA_RESTART 0
1640#endif 1691#endif
1641 1692
… …
1690#endif 1741#endif
1691 if (expect_false (ev_is_active (w))) 1742 if (expect_false (ev_is_active (w)))
1692 return; 1743 return;
1693 1744
1694 ev_start (EV_A_ (W)w, 1); 1745 ev_start (EV_A_ (W)w, 1);
1695 wlist_add ((WL *)&childs [w->pid & (PID_HASHSIZE - 1)], (WL)w); 1746 wlist_add ((WL *)&childs [w->pid & (EV_PID_HASHSIZE - 1)], (WL)w);
1696} 1747}
1697 1748
1698void 1749void
1699ev_child_stop (EV_P_ ev_child *w) 1750ev_child_stop (EV_P_ ev_child *w)
1700{ 1751{
1701 ev_clear_pending (EV_A_ (W)w); 1752 ev_clear_pending (EV_A_ (W)w);
1702 if (expect_false (!ev_is_active (w))) 1753 if (expect_false (!ev_is_active (w)))
1703 return; 1754 return;
1704 1755
1705 wlist_del ((WL *)&childs [w->pid & (PID_HASHSIZE - 1)], (WL)w); 1756 wlist_del ((WL *)&childs [w->pid & (EV_PID_HASHSIZE - 1)], (WL)w);
1757 ev_stop (EV_A_ (W)w);
1758}
1759
1760#if EV_STAT_ENABLE
1761
1762# ifdef _WIN32
1763# undef lstat
1764# define lstat(a,b) _stati64 (a,b)
1765# endif
1766
1767#define DEF_STAT_INTERVAL 5.0074891
1768#define MIN_STAT_INTERVAL 0.1074891
1769
1770static void noinline stat_timer_cb (EV_P_ ev_timer *w_, int revents);
1771
1772#if EV_USE_INOTIFY
1773# define EV_INOTIFY_BUFSIZE 8192
1774
1775static void noinline
1776infy_add (EV_P_ ev_stat *w)
1777{
1778 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);
1779
1780 if (w->wd < 0)
1781 {
1782 ev_timer_start (EV_A_ &w->timer); /* this is not race-free, so we still need to recheck periodically */
1783
1784 /* monitor some parent directory for speedup hints */
1785 if ((errno == ENOENT || errno == EACCES) && strlen (w->path) < 4096)
1786 {
1787 char path [4096];
1788 strcpy (path, w->path);
1789
1790 do
1791 {
1792 int mask = IN_MASK_ADD | IN_DELETE_SELF | IN_MOVE_SELF
1793 | (errno == EACCES ? IN_ATTRIB : IN_CREATE | IN_MOVED_TO);
1794
1795 char *pend = strrchr (path, '/');
1796
1797 if (!pend)
1798 break; /* whoops, no '/', complain to your admin */
1799
1800 *pend = 0;
1801 w->wd = inotify_add_watch (fs_fd, path, mask);
1802 }
1803 while (w->wd < 0 && (errno == ENOENT || errno == EACCES));
1804 }
1805 }
1806 else
1807 ev_timer_stop (EV_A_ &w->timer); /* we can watch this in a race-free way */
1808
1809 if (w->wd >= 0)
1810 wlist_add (&fs_hash [w->wd & (EV_INOTIFY_HASHSIZE - 1)].head, (WL)w);
1811}
1812
1813static void noinline
1814infy_del (EV_P_ ev_stat *w)
1815{
1816 int slot;
1817 int wd = w->wd;
1818
1819 if (wd < 0)
1820 return;
1821
1822 w->wd = -2;
1823 slot = wd & (EV_INOTIFY_HASHSIZE - 1);
1824 wlist_del (&fs_hash [slot].head, (WL)w);
1825
1826 /* remove this watcher, if others are watching it, they will rearm */
1827 inotify_rm_watch (fs_fd, wd);
1828}
1829
1830static void noinline
1831infy_wd (EV_P_ int slot, int wd, struct inotify_event *ev)
1832{
1833 if (slot < 0)
1834 /* overflow, need to check for all hahs slots */
1835 for (slot = 0; slot < EV_INOTIFY_HASHSIZE; ++slot)
1836 infy_wd (EV_A_ slot, wd, ev);
1837 else
1838 {
1839 WL w_;
1840
1841 for (w_ = fs_hash [slot & (EV_INOTIFY_HASHSIZE - 1)].head; w_; )
1842 {
1843 ev_stat *w = (ev_stat *)w_;
1844 w_ = w_->next; /* lets us remove this watcher and all before it */
1845
1846 if (w->wd == wd || wd == -1)
1847 {
1848 if (ev->mask & (IN_IGNORED | IN_UNMOUNT | IN_DELETE_SELF))
1849 {
1850 w->wd = -1;
1851 infy_add (EV_A_ w); /* re-add, no matter what */
1852 }
1853
1854 stat_timer_cb (EV_A_ &w->timer, 0);
1855 }
1856 }
1857 }
1858}
1859
1860static void
1861infy_cb (EV_P_ ev_io *w, int revents)
1862{
1863 char buf [EV_INOTIFY_BUFSIZE];
1864 struct inotify_event *ev = (struct inotify_event *)buf;
1865 int ofs;
1866 int len = read (fs_fd, buf, sizeof (buf));
1867
1868 for (ofs = 0; ofs < len; ofs += sizeof (struct inotify_event) + ev->len)
1869 infy_wd (EV_A_ ev->wd, ev->wd, ev);
1870}
1871
1872void inline_size
1873infy_init (EV_P)
1874{
1875 if (fs_fd != -2)
1876 return;
1877
1878 fs_fd = inotify_init ();
1879
1880 if (fs_fd >= 0)
1881 {
1882 ev_io_init (&fs_w, infy_cb, fs_fd, EV_READ);
1883 ev_set_priority (&fs_w, EV_MAXPRI);
1884 ev_io_start (EV_A_ &fs_w);
1885 }
1886}
1887
1888void inline_size
1889infy_fork (EV_P)
1890{
1891 int slot;
1892
1893 if (fs_fd < 0)
1894 return;
1895
1896 close (fs_fd);
1897 fs_fd = inotify_init ();
1898
1899 for (slot = 0; slot < EV_INOTIFY_HASHSIZE; ++slot)
1900 {
1901 WL w_ = fs_hash [slot].head;
1902 fs_hash [slot].head = 0;
1903
1904 while (w_)
1905 {
1906 ev_stat *w = (ev_stat *)w_;
1907 w_ = w_->next; /* lets us add this watcher */
1908
1909 w->wd = -1;
1910
1911 if (fs_fd >= 0)
1912 infy_add (EV_A_ w); /* re-add, no matter what */
1913 else
1914 ev_timer_start (EV_A_ &w->timer);
1915 }
1916
1917 }
1918}
1919
1920#endif
1921
1922void
1923ev_stat_stat (EV_P_ ev_stat *w)
1924{
1925 if (lstat (w->path, &w->attr) < 0)
1926 w->attr.st_nlink = 0;
1927 else if (!w->attr.st_nlink)
1928 w->attr.st_nlink = 1;
1929}
1930
1931static void noinline
1932stat_timer_cb (EV_P_ ev_timer *w_, int revents)
1933{
1934 ev_stat *w = (ev_stat *)(((char *)w_) - offsetof (ev_stat, timer));
1935
1936 /* we copy this here each the time so that */
1937 /* prev has the old value when the callback gets invoked */
1938 w->prev = w->attr;
1939 ev_stat_stat (EV_A_ w);
1940
1941 /* memcmp doesn't work on netbsd, they.... do stuff to their struct stat */
1942 if (
1943 w->prev.st_dev != w->attr.st_dev
1944 || w->prev.st_ino != w->attr.st_ino
1945 || w->prev.st_mode != w->attr.st_mode
1946 || w->prev.st_nlink != w->attr.st_nlink
1947 || w->prev.st_uid != w->attr.st_uid
1948 || w->prev.st_gid != w->attr.st_gid
1949 || w->prev.st_rdev != w->attr.st_rdev
1950 || w->prev.st_size != w->attr.st_size
1951 || w->prev.st_atime != w->attr.st_atime
1952 || w->prev.st_mtime != w->attr.st_mtime
1953 || w->prev.st_ctime != w->attr.st_ctime
1954 ) {
1955 #if EV_USE_INOTIFY
1956 infy_del (EV_A_ w);
1957 infy_add (EV_A_ w);
1958 ev_stat_stat (EV_A_ w); /* avoid race... */
1959 #endif
1960
1961 ev_feed_event (EV_A_ w, EV_STAT);
1962 }
1963}
1964
1965void
1966ev_stat_start (EV_P_ ev_stat *w)
1967{
1968 if (expect_false (ev_is_active (w)))
1969 return;
1970
1971 /* since we use memcmp, we need to clear any padding data etc. */
1972 memset (&w->prev, 0, sizeof (ev_statdata));
1973 memset (&w->attr, 0, sizeof (ev_statdata));
1974
1975 ev_stat_stat (EV_A_ w);
1976
1977 if (w->interval < MIN_STAT_INTERVAL)
1978 w->interval = w->interval ? MIN_STAT_INTERVAL : DEF_STAT_INTERVAL;
1979
1980 ev_timer_init (&w->timer, stat_timer_cb, w->interval, w->interval);
1981 ev_set_priority (&w->timer, ev_priority (w));
1982
1983#if EV_USE_INOTIFY
1984 infy_init (EV_A);
1985
1986 if (fs_fd >= 0)
1987 infy_add (EV_A_ w);
1988 else
1989#endif
1990 ev_timer_start (EV_A_ &w->timer);
1991
1992 ev_start (EV_A_ (W)w, 1);
1993}
1994
1995void
1996ev_stat_stop (EV_P_ ev_stat *w)
1997{
1998 ev_clear_pending (EV_A_ (W)w);
1999 if (expect_false (!ev_is_active (w)))
2000 return;
2001
2002#if EV_USE_INOTIFY
2003 infy_del (EV_A_ w);
2004#endif
2005 ev_timer_stop (EV_A_ &w->timer);
2006
2007 ev_stop (EV_A_ (W)w);
2008}
2009#endif
2010
2011void
2012ev_idle_start (EV_P_ ev_idle *w)
2013{
2014 if (expect_false (ev_is_active (w)))
2015 return;
2016
2017 ev_start (EV_A_ (W)w, ++idlecnt);
2018 array_needsize (ev_idle *, idles, idlemax, idlecnt, EMPTY2);
2019 idles [idlecnt - 1] = w;
2020}
2021
2022void
2023ev_idle_stop (EV_P_ ev_idle *w)
2024{
2025 ev_clear_pending (EV_A_ (W)w);
2026 if (expect_false (!ev_is_active (w)))
2027 return;
2028
2029 {
2030 int active = ((W)w)->active;
2031 idles [active - 1] = idles [--idlecnt];
2032 ((W)idles [active - 1])->active = active;
2033 }
2034
2035 ev_stop (EV_A_ (W)w);
2036}
2037
2038void
2039ev_prepare_start (EV_P_ ev_prepare *w)
2040{
2041 if (expect_false (ev_is_active (w)))
2042 return;
2043
2044 ev_start (EV_A_ (W)w, ++preparecnt);
2045 array_needsize (ev_prepare *, prepares, preparemax, preparecnt, EMPTY2);
2046 prepares [preparecnt - 1] = w;
2047}
2048
2049void
2050ev_prepare_stop (EV_P_ ev_prepare *w)
2051{
2052 ev_clear_pending (EV_A_ (W)w);
2053 if (expect_false (!ev_is_active (w)))
2054 return;
2055
2056 {
2057 int active = ((W)w)->active;
2058 prepares [active - 1] = prepares [--preparecnt];
2059 ((W)prepares [active - 1])->active = active;
2060 }
2061
2062 ev_stop (EV_A_ (W)w);
2063}
2064
2065void
2066ev_check_start (EV_P_ ev_check *w)
2067{
2068 if (expect_false (ev_is_active (w)))
2069 return;
2070
2071 ev_start (EV_A_ (W)w, ++checkcnt);
2072 array_needsize (ev_check *, checks, checkmax, checkcnt, EMPTY2);
2073 checks [checkcnt - 1] = w;
2074}
2075
2076void
2077ev_check_stop (EV_P_ ev_check *w)
2078{
2079 ev_clear_pending (EV_A_ (W)w);
2080 if (expect_false (!ev_is_active (w)))
2081 return;
2082
2083 {
2084 int active = ((W)w)->active;
2085 checks [active - 1] = checks [--checkcnt];
2086 ((W)checks [active - 1])->active = active;
2087 }
2088
1706 ev_stop (EV_A_ (W)w); 2089 ev_stop (EV_A_ (W)w);
1707} 2090}
1708 2091
1709#if EV_EMBED_ENABLE 2092#if EV_EMBED_ENABLE
1710void noinline 2093void noinline
… …
1753 2136
1754 ev_stop (EV_A_ (W)w); 2137 ev_stop (EV_A_ (W)w);
1755} 2138}
1756#endif 2139#endif
1757 2140
1758#if EV_STAT_ENABLE 2141#if EV_FORK_ENABLE
1759
1760# ifdef _WIN32
1761# define lstat(a,b) stat(a,b)
1762# endif
1763
1764void 2142void
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) 2143ev_fork_start (EV_P_ ev_fork *w)
1789{ 2144{
1790 if (expect_false (ev_is_active (w))) 2145 if (expect_false (ev_is_active (w)))
1791 return; 2146 return;
1792 2147
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); 2148 ev_start (EV_A_ (W)w, ++forkcnt);
2149 array_needsize (ev_fork *, forks, forkmax, forkcnt, EMPTY2);
2150 forks [forkcnt - 1] = w;
1804} 2151}
1805 2152
1806void 2153void
1807ev_stat_stop (EV_P_ ev_stat *w) 2154ev_fork_stop (EV_P_ ev_fork *w)
1808{ 2155{
1809 ev_clear_pending (EV_A_ (W)w); 2156 ev_clear_pending (EV_A_ (W)w);
1810 if (expect_false (!ev_is_active (w))) 2157 if (expect_false (!ev_is_active (w)))
1811 return; 2158 return;
1812 2159
1813 ev_timer_stop (EV_A_ &w->timer); 2160 {
2161 int active = ((W)w)->active;
2162 forks [active - 1] = forks [--forkcnt];
2163 ((W)forks [active - 1])->active = active;
2164 }
1814 2165
1815 ev_stop (EV_A_ (W)w); 2166 ev_stop (EV_A_ (W)w);
1816} 2167}
1817#endif 2168#endif
1818 2169

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