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Comparing libev/ev.c (file contents):
Revision 1.201 by root, Thu Dec 27 08:00:18 2007 UTC vs.
Revision 1.228 by root, Fri May 2 08:07:37 2008 UTC

1/* 1/*
2 * libev event processing core, watcher management 2 * libev event processing core, watcher management
3 * 3 *
4 * Copyright (c) 2007 Marc Alexander Lehmann <libev@schmorp.de> 4 * Copyright (c) 2007,2008 Marc Alexander Lehmann <libev@schmorp.de>
5 * All rights reserved. 5 * All rights reserved.
6 * 6 *
7 * Redistribution and use in source and binary forms, with or without modifica- 7 * Redistribution and use in source and binary forms, with or without modifica-
8 * tion, are permitted provided that the following conditions are met: 8 * tion, are permitted provided that the following conditions are met:
9 * 9 *
… …
39 39
40#ifdef __cplusplus 40#ifdef __cplusplus
41extern "C" { 41extern "C" {
42#endif 42#endif
43 43
44/* this big block deduces configuration from config.h */
44#ifndef EV_STANDALONE 45#ifndef EV_STANDALONE
45# ifdef EV_CONFIG_H 46# ifdef EV_CONFIG_H
46# include EV_CONFIG_H 47# include EV_CONFIG_H
47# else 48# else
48# include "config.h" 49# include "config.h"
… …
118# else 119# else
119# define EV_USE_INOTIFY 0 120# define EV_USE_INOTIFY 0
120# endif 121# endif
121# endif 122# endif
122 123
124# ifndef EV_USE_EVENTFD
125# if HAVE_EVENTFD
126# define EV_USE_EVENTFD 1
127# else
128# define EV_USE_EVENTFD 0
129# endif
130# endif
131
123#endif 132#endif
124 133
125#include <math.h> 134#include <math.h>
126#include <stdlib.h> 135#include <stdlib.h>
127#include <fcntl.h> 136#include <fcntl.h>
… …
152# ifndef EV_SELECT_IS_WINSOCKET 161# ifndef EV_SELECT_IS_WINSOCKET
153# define EV_SELECT_IS_WINSOCKET 1 162# define EV_SELECT_IS_WINSOCKET 1
154# endif 163# endif
155#endif 164#endif
156 165
157/**/ 166/* this block tries to deduce configuration from header-defined symbols and defaults */
158 167
159#ifndef EV_USE_MONOTONIC 168#ifndef EV_USE_MONOTONIC
160# define EV_USE_MONOTONIC 0 169# define EV_USE_MONOTONIC 0
161#endif 170#endif
162 171
… …
179# define EV_USE_POLL 1 188# define EV_USE_POLL 1
180# endif 189# endif
181#endif 190#endif
182 191
183#ifndef EV_USE_EPOLL 192#ifndef EV_USE_EPOLL
193# if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 4))
194# define EV_USE_EPOLL 1
195# else
184# define EV_USE_EPOLL 0 196# define EV_USE_EPOLL 0
197# endif
185#endif 198#endif
186 199
187#ifndef EV_USE_KQUEUE 200#ifndef EV_USE_KQUEUE
188# define EV_USE_KQUEUE 0 201# define EV_USE_KQUEUE 0
189#endif 202#endif
… …
191#ifndef EV_USE_PORT 204#ifndef EV_USE_PORT
192# define EV_USE_PORT 0 205# define EV_USE_PORT 0
193#endif 206#endif
194 207
195#ifndef EV_USE_INOTIFY 208#ifndef EV_USE_INOTIFY
209# if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 4))
210# define EV_USE_INOTIFY 1
211# else
196# define EV_USE_INOTIFY 0 212# define EV_USE_INOTIFY 0
213# endif
197#endif 214#endif
198 215
199#ifndef EV_PID_HASHSIZE 216#ifndef EV_PID_HASHSIZE
200# if EV_MINIMAL 217# if EV_MINIMAL
201# define EV_PID_HASHSIZE 1 218# define EV_PID_HASHSIZE 1
… …
210# else 227# else
211# define EV_INOTIFY_HASHSIZE 16 228# define EV_INOTIFY_HASHSIZE 16
212# endif 229# endif
213#endif 230#endif
214 231
215/**/ 232#ifndef EV_USE_EVENTFD
233# if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 7))
234# define EV_USE_EVENTFD 1
235# else
236# define EV_USE_EVENTFD 0
237# endif
238#endif
239
240/* this block fixes any misconfiguration where we know we run into trouble otherwise */
216 241
217#ifndef CLOCK_MONOTONIC 242#ifndef CLOCK_MONOTONIC
218# undef EV_USE_MONOTONIC 243# undef EV_USE_MONOTONIC
219# define EV_USE_MONOTONIC 0 244# define EV_USE_MONOTONIC 0
220#endif 245#endif
… …
239# include <sys/inotify.h> 264# include <sys/inotify.h>
240#endif 265#endif
241 266
242#if EV_SELECT_IS_WINSOCKET 267#if EV_SELECT_IS_WINSOCKET
243# include <winsock.h> 268# include <winsock.h>
269#endif
270
271#if EV_USE_EVENTFD
272/* our minimum requirement is glibc 2.7 which has the stub, but not the header */
273# include <stdint.h>
274# ifdef __cplusplus
275extern "C" {
276# endif
277int eventfd (unsigned int initval, int flags);
278# ifdef __cplusplus
279}
280# endif
244#endif 281#endif
245 282
246/**/ 283/**/
247 284
248/* 285/*
… …
263# define expect(expr,value) __builtin_expect ((expr),(value)) 300# define expect(expr,value) __builtin_expect ((expr),(value))
264# define noinline __attribute__ ((noinline)) 301# define noinline __attribute__ ((noinline))
265#else 302#else
266# define expect(expr,value) (expr) 303# define expect(expr,value) (expr)
267# define noinline 304# define noinline
268# if __STDC_VERSION__ < 199901L 305# if __STDC_VERSION__ < 199901L && __GNUC__ < 2
269# define inline 306# define inline
270# endif 307# endif
271#endif 308#endif
272 309
273#define expect_false(expr) expect ((expr) != 0, 0) 310#define expect_false(expr) expect ((expr) != 0, 0)
… …
288 325
289typedef ev_watcher *W; 326typedef ev_watcher *W;
290typedef ev_watcher_list *WL; 327typedef ev_watcher_list *WL;
291typedef ev_watcher_time *WT; 328typedef ev_watcher_time *WT;
292 329
330#define ev_at(w) ((WT)(w))->at
331
293#if EV_USE_MONOTONIC 332#if EV_USE_MONOTONIC
294/* sig_atomic_t is used to avoid per-thread variables or locking but still */ 333/* sig_atomic_t is used to avoid per-thread variables or locking but still */
295/* giving it a reasonably high chance of working on typical architetcures */ 334/* giving it a reasonably high chance of working on typical architetcures */
296static sig_atomic_t have_monotonic; /* did clock_gettime (CLOCK_MONOTONIC) work? */ 335static EV_ATOMIC_T have_monotonic; /* did clock_gettime (CLOCK_MONOTONIC) work? */
297#endif 336#endif
298 337
299#ifdef _WIN32 338#ifdef _WIN32
300# include "ev_win32.c" 339# include "ev_win32.c"
301#endif 340#endif
… …
323 perror (msg); 362 perror (msg);
324 abort (); 363 abort ();
325 } 364 }
326} 365}
327 366
367static void *
368ev_realloc_emul (void *ptr, long size)
369{
370 /* some systems, notably openbsd and darwin, fail to properly
371 * implement realloc (x, 0) (as required by both ansi c-98 and
372 * the single unix specification, so work around them here.
373 */
374
375 if (size)
376 return realloc (ptr, size);
377
378 free (ptr);
379 return 0;
380}
381
328static void *(*alloc)(void *ptr, long size); 382static void *(*alloc)(void *ptr, long size) = ev_realloc_emul;
329 383
330void 384void
331ev_set_allocator (void *(*cb)(void *ptr, long size)) 385ev_set_allocator (void *(*cb)(void *ptr, long size))
332{ 386{
333 alloc = cb; 387 alloc = cb;
334} 388}
335 389
336inline_speed void * 390inline_speed void *
337ev_realloc (void *ptr, long size) 391ev_realloc (void *ptr, long size)
338{ 392{
339 ptr = alloc ? alloc (ptr, size) : realloc (ptr, size); 393 ptr = alloc (ptr, size);
340 394
341 if (!ptr && size) 395 if (!ptr && size)
342 { 396 {
343 fprintf (stderr, "libev: cannot allocate %ld bytes, aborting.", size); 397 fprintf (stderr, "libev: cannot allocate %ld bytes, aborting.", size);
344 abort (); 398 abort ();
… …
451 ts.tv_sec = (time_t)delay; 505 ts.tv_sec = (time_t)delay;
452 ts.tv_nsec = (long)((delay - (ev_tstamp)(ts.tv_sec)) * 1e9); 506 ts.tv_nsec = (long)((delay - (ev_tstamp)(ts.tv_sec)) * 1e9);
453 507
454 nanosleep (&ts, 0); 508 nanosleep (&ts, 0);
455#elif defined(_WIN32) 509#elif defined(_WIN32)
456 Sleep (delay * 1e3); 510 Sleep ((unsigned long)(delay * 1e3));
457#else 511#else
458 struct timeval tv; 512 struct timeval tv;
459 513
460 tv.tv_sec = (time_t)delay; 514 tv.tv_sec = (time_t)delay;
461 tv.tv_usec = (long)((delay - (ev_tstamp)(tv.tv_sec)) * 1e6); 515 tv.tv_usec = (long)((delay - (ev_tstamp)(tv.tv_sec)) * 1e6);
… …
702 } 756 }
703} 757}
704 758
705/*****************************************************************************/ 759/*****************************************************************************/
706 760
761/* towards the root */
707void inline_speed 762void inline_speed
708upheap (WT *heap, int k) 763upheap (WT *heap, int k)
709{ 764{
710 WT w = heap [k]; 765 WT w = heap [k];
711 766
712 while (k) 767 for (;;)
713 { 768 {
714 int p = (k - 1) >> 1; 769 int p = k >> 1;
715 770
771 /* maybe we could use a dummy element at heap [0]? */
716 if (heap [p]->at <= w->at) 772 if (!p || heap [p]->at <= w->at)
717 break; 773 break;
718 774
719 heap [k] = heap [p]; 775 heap [k] = heap [p];
720 ((W)heap [k])->active = k + 1; 776 ((W)heap [k])->active = k;
721 k = p; 777 k = p;
722 } 778 }
723 779
724 heap [k] = w; 780 heap [k] = w;
725 ((W)heap [k])->active = k + 1; 781 ((W)heap [k])->active = k;
726} 782}
727 783
784/* away from the root */
728void inline_speed 785void inline_speed
729downheap (WT *heap, int N, int k) 786downheap (WT *heap, int N, int k)
730{ 787{
731 WT w = heap [k]; 788 WT w = heap [k];
732 789
733 for (;;) 790 for (;;)
734 { 791 {
735 int c = (k << 1) + 1; 792 int c = k << 1;
736 793
737 if (c >= N) 794 if (c > N)
738 break; 795 break;
739 796
740 c += c + 1 < N && heap [c]->at > heap [c + 1]->at 797 c += c < N && heap [c]->at > heap [c + 1]->at
741 ? 1 : 0; 798 ? 1 : 0;
742 799
743 if (w->at <= heap [c]->at) 800 if (w->at <= heap [c]->at)
744 break; 801 break;
745 802
746 heap [k] = heap [c]; 803 heap [k] = heap [c];
747 ((W)heap [k])->active = k + 1; 804 ((W)heap [k])->active = k;
748 805
749 k = c; 806 k = c;
750 } 807 }
751 808
752 heap [k] = w; 809 heap [k] = w;
753 ((W)heap [k])->active = k + 1; 810 ((W)heap [k])->active = k;
754} 811}
755 812
756void inline_size 813void inline_size
757adjustheap (WT *heap, int N, int k) 814adjustheap (WT *heap, int N, int k)
758{ 815{
… …
763/*****************************************************************************/ 820/*****************************************************************************/
764 821
765typedef struct 822typedef struct
766{ 823{
767 WL head; 824 WL head;
768 sig_atomic_t volatile gotsig; 825 EV_ATOMIC_T gotsig;
769} ANSIG; 826} ANSIG;
770 827
771static ANSIG *signals; 828static ANSIG *signals;
772static int signalmax; 829static int signalmax;
773 830
774static int sigpipe [2]; 831static EV_ATOMIC_T gotsig;
775static sig_atomic_t volatile gotsig;
776static ev_io sigev;
777 832
778void inline_size 833void inline_size
779signals_init (ANSIG *base, int count) 834signals_init (ANSIG *base, int count)
780{ 835{
781 while (count--) 836 while (count--)
… …
785 840
786 ++base; 841 ++base;
787 } 842 }
788} 843}
789 844
790static void 845/*****************************************************************************/
791sighandler (int signum)
792{
793#if _WIN32
794 signal (signum, sighandler);
795#endif
796
797 signals [signum - 1].gotsig = 1;
798
799 if (!gotsig)
800 {
801 int old_errno = errno;
802 gotsig = 1;
803 write (sigpipe [1], &signum, 1);
804 errno = old_errno;
805 }
806}
807
808void noinline
809ev_feed_signal_event (EV_P_ int signum)
810{
811 WL w;
812
813#if EV_MULTIPLICITY
814 assert (("feeding signal events is only supported in the default loop", loop == ev_default_loop_ptr));
815#endif
816
817 --signum;
818
819 if (signum < 0 || signum >= signalmax)
820 return;
821
822 signals [signum].gotsig = 0;
823
824 for (w = signals [signum].head; w; w = w->next)
825 ev_feed_event (EV_A_ (W)w, EV_SIGNAL);
826}
827
828static void
829sigcb (EV_P_ ev_io *iow, int revents)
830{
831 int signum;
832
833 read (sigpipe [0], &revents, 1);
834 gotsig = 0;
835
836 for (signum = signalmax; signum--; )
837 if (signals [signum].gotsig)
838 ev_feed_signal_event (EV_A_ signum + 1);
839}
840 846
841void inline_speed 847void inline_speed
842fd_intern (int fd) 848fd_intern (int fd)
843{ 849{
844#ifdef _WIN32 850#ifdef _WIN32
… …
849 fcntl (fd, F_SETFL, O_NONBLOCK); 855 fcntl (fd, F_SETFL, O_NONBLOCK);
850#endif 856#endif
851} 857}
852 858
853static void noinline 859static void noinline
854siginit (EV_P) 860evpipe_init (EV_P)
855{ 861{
862 if (!ev_is_active (&pipeev))
863 {
864#if EV_USE_EVENTFD
865 if ((evfd = eventfd (0, 0)) >= 0)
866 {
867 evpipe [0] = -1;
868 fd_intern (evfd);
869 ev_io_set (&pipeev, evfd, EV_READ);
870 }
871 else
872#endif
873 {
874 while (pipe (evpipe))
875 syserr ("(libev) error creating signal/async pipe");
876
856 fd_intern (sigpipe [0]); 877 fd_intern (evpipe [0]);
857 fd_intern (sigpipe [1]); 878 fd_intern (evpipe [1]);
879 ev_io_set (&pipeev, evpipe [0], EV_READ);
880 }
858 881
859 ev_io_set (&sigev, sigpipe [0], EV_READ);
860 ev_io_start (EV_A_ &sigev); 882 ev_io_start (EV_A_ &pipeev);
861 ev_unref (EV_A); /* child watcher should not keep loop alive */ 883 ev_unref (EV_A); /* watcher should not keep loop alive */
884 }
885}
886
887void inline_size
888evpipe_write (EV_P_ EV_ATOMIC_T *flag)
889{
890 if (!*flag)
891 {
892 int old_errno = errno; /* save errno because write might clobber it */
893
894 *flag = 1;
895
896#if EV_USE_EVENTFD
897 if (evfd >= 0)
898 {
899 uint64_t counter = 1;
900 write (evfd, &counter, sizeof (uint64_t));
901 }
902 else
903#endif
904 write (evpipe [1], &old_errno, 1);
905
906 errno = old_errno;
907 }
908}
909
910static void
911pipecb (EV_P_ ev_io *iow, int revents)
912{
913#if EV_USE_EVENTFD
914 if (evfd >= 0)
915 {
916 uint64_t counter = 1;
917 read (evfd, &counter, sizeof (uint64_t));
918 }
919 else
920#endif
921 {
922 char dummy;
923 read (evpipe [0], &dummy, 1);
924 }
925
926 if (gotsig && ev_is_default_loop (EV_A))
927 {
928 int signum;
929 gotsig = 0;
930
931 for (signum = signalmax; signum--; )
932 if (signals [signum].gotsig)
933 ev_feed_signal_event (EV_A_ signum + 1);
934 }
935
936#if EV_ASYNC_ENABLE
937 if (gotasync)
938 {
939 int i;
940 gotasync = 0;
941
942 for (i = asynccnt; i--; )
943 if (asyncs [i]->sent)
944 {
945 asyncs [i]->sent = 0;
946 ev_feed_event (EV_A_ asyncs [i], EV_ASYNC);
947 }
948 }
949#endif
862} 950}
863 951
864/*****************************************************************************/ 952/*****************************************************************************/
865 953
954static void
955ev_sighandler (int signum)
956{
957#if EV_MULTIPLICITY
958 struct ev_loop *loop = &default_loop_struct;
959#endif
960
961#if _WIN32
962 signal (signum, ev_sighandler);
963#endif
964
965 signals [signum - 1].gotsig = 1;
966 evpipe_write (EV_A_ &gotsig);
967}
968
969void noinline
970ev_feed_signal_event (EV_P_ int signum)
971{
972 WL w;
973
974#if EV_MULTIPLICITY
975 assert (("feeding signal events is only supported in the default loop", loop == ev_default_loop_ptr));
976#endif
977
978 --signum;
979
980 if (signum < 0 || signum >= signalmax)
981 return;
982
983 signals [signum].gotsig = 0;
984
985 for (w = signals [signum].head; w; w = w->next)
986 ev_feed_event (EV_A_ (W)w, EV_SIGNAL);
987}
988
989/*****************************************************************************/
990
866static WL childs [EV_PID_HASHSIZE]; 991static WL childs [EV_PID_HASHSIZE];
867 992
868#ifndef _WIN32 993#ifndef _WIN32
869 994
870static ev_signal childev; 995static ev_signal childev;
871 996
997#ifndef WIFCONTINUED
998# define WIFCONTINUED(status) 0
999#endif
1000
872void inline_speed 1001void inline_speed
873child_reap (EV_P_ ev_signal *sw, int chain, int pid, int status) 1002child_reap (EV_P_ int chain, int pid, int status)
874{ 1003{
875 ev_child *w; 1004 ev_child *w;
1005 int traced = WIFSTOPPED (status) || WIFCONTINUED (status);
876 1006
877 for (w = (ev_child *)childs [chain & (EV_PID_HASHSIZE - 1)]; w; w = (ev_child *)((WL)w)->next) 1007 for (w = (ev_child *)childs [chain & (EV_PID_HASHSIZE - 1)]; w; w = (ev_child *)((WL)w)->next)
1008 {
878 if (w->pid == pid || !w->pid) 1009 if ((w->pid == pid || !w->pid)
1010 && (!traced || (w->flags & 1)))
879 { 1011 {
880 ev_set_priority (w, ev_priority (sw)); /* need to do it *now* */ 1012 ev_set_priority (w, EV_MAXPRI); /* need to do it *now*, this *must* be the same prio as the signal watcher itself */
881 w->rpid = pid; 1013 w->rpid = pid;
882 w->rstatus = status; 1014 w->rstatus = status;
883 ev_feed_event (EV_A_ (W)w, EV_CHILD); 1015 ev_feed_event (EV_A_ (W)w, EV_CHILD);
884 } 1016 }
1017 }
885} 1018}
886 1019
887#ifndef WCONTINUED 1020#ifndef WCONTINUED
888# define WCONTINUED 0 1021# define WCONTINUED 0
889#endif 1022#endif
… …
898 if (!WCONTINUED 1031 if (!WCONTINUED
899 || errno != EINVAL 1032 || errno != EINVAL
900 || 0 >= (pid = waitpid (-1, &status, WNOHANG | WUNTRACED))) 1033 || 0 >= (pid = waitpid (-1, &status, WNOHANG | WUNTRACED)))
901 return; 1034 return;
902 1035
903 /* make sure we are called again until all childs have been reaped */ 1036 /* make sure we are called again until all children have been reaped */
904 /* we need to do it this way so that the callback gets called before we continue */ 1037 /* we need to do it this way so that the callback gets called before we continue */
905 ev_feed_event (EV_A_ (W)sw, EV_SIGNAL); 1038 ev_feed_event (EV_A_ (W)sw, EV_SIGNAL);
906 1039
907 child_reap (EV_A_ sw, pid, pid, status); 1040 child_reap (EV_A_ pid, pid, status);
908 if (EV_PID_HASHSIZE > 1) 1041 if (EV_PID_HASHSIZE > 1)
909 child_reap (EV_A_ sw, 0, pid, status); /* this might trigger a watcher twice, but feed_event catches that */ 1042 child_reap (EV_A_ 0, pid, status); /* this might trigger a watcher twice, but feed_event catches that */
910} 1043}
911 1044
912#endif 1045#endif
913 1046
914/*****************************************************************************/ 1047/*****************************************************************************/
… …
1032 if (!clock_gettime (CLOCK_MONOTONIC, &ts)) 1165 if (!clock_gettime (CLOCK_MONOTONIC, &ts))
1033 have_monotonic = 1; 1166 have_monotonic = 1;
1034 } 1167 }
1035#endif 1168#endif
1036 1169
1037 ev_rt_now = ev_time (); 1170 ev_rt_now = ev_time ();
1038 mn_now = get_clock (); 1171 mn_now = get_clock ();
1039 now_floor = mn_now; 1172 now_floor = mn_now;
1040 rtmn_diff = ev_rt_now - mn_now; 1173 rtmn_diff = ev_rt_now - mn_now;
1041 1174
1042 io_blocktime = 0.; 1175 io_blocktime = 0.;
1043 timeout_blocktime = 0.; 1176 timeout_blocktime = 0.;
1177 backend = 0;
1178 backend_fd = -1;
1179 gotasync = 0;
1180#if EV_USE_INOTIFY
1181 fs_fd = -2;
1182#endif
1044 1183
1045 /* pid check not overridable via env */ 1184 /* pid check not overridable via env */
1046#ifndef _WIN32 1185#ifndef _WIN32
1047 if (flags & EVFLAG_FORKCHECK) 1186 if (flags & EVFLAG_FORKCHECK)
1048 curpid = getpid (); 1187 curpid = getpid ();
… …
1051 if (!(flags & EVFLAG_NOENV) 1190 if (!(flags & EVFLAG_NOENV)
1052 && !enable_secure () 1191 && !enable_secure ()
1053 && getenv ("LIBEV_FLAGS")) 1192 && getenv ("LIBEV_FLAGS"))
1054 flags = atoi (getenv ("LIBEV_FLAGS")); 1193 flags = atoi (getenv ("LIBEV_FLAGS"));
1055 1194
1056 if (!(flags & 0x0000ffffUL)) 1195 if (!(flags & 0x0000ffffU))
1057 flags |= ev_recommended_backends (); 1196 flags |= ev_recommended_backends ();
1058
1059 backend = 0;
1060 backend_fd = -1;
1061#if EV_USE_INOTIFY
1062 fs_fd = -2;
1063#endif
1064 1197
1065#if EV_USE_PORT 1198#if EV_USE_PORT
1066 if (!backend && (flags & EVBACKEND_PORT )) backend = port_init (EV_A_ flags); 1199 if (!backend && (flags & EVBACKEND_PORT )) backend = port_init (EV_A_ flags);
1067#endif 1200#endif
1068#if EV_USE_KQUEUE 1201#if EV_USE_KQUEUE
… …
1076#endif 1209#endif
1077#if EV_USE_SELECT 1210#if EV_USE_SELECT
1078 if (!backend && (flags & EVBACKEND_SELECT)) backend = select_init (EV_A_ flags); 1211 if (!backend && (flags & EVBACKEND_SELECT)) backend = select_init (EV_A_ flags);
1079#endif 1212#endif
1080 1213
1081 ev_init (&sigev, sigcb); 1214 ev_init (&pipeev, pipecb);
1082 ev_set_priority (&sigev, EV_MAXPRI); 1215 ev_set_priority (&pipeev, EV_MAXPRI);
1083 } 1216 }
1084} 1217}
1085 1218
1086static void noinline 1219static void noinline
1087loop_destroy (EV_P) 1220loop_destroy (EV_P)
1088{ 1221{
1089 int i; 1222 int i;
1223
1224 if (ev_is_active (&pipeev))
1225 {
1226 ev_ref (EV_A); /* signal watcher */
1227 ev_io_stop (EV_A_ &pipeev);
1228
1229#if EV_USE_EVENTFD
1230 if (evfd >= 0)
1231 close (evfd);
1232#endif
1233
1234 if (evpipe [0] >= 0)
1235 {
1236 close (evpipe [0]);
1237 close (evpipe [1]);
1238 }
1239 }
1090 1240
1091#if EV_USE_INOTIFY 1241#if EV_USE_INOTIFY
1092 if (fs_fd >= 0) 1242 if (fs_fd >= 0)
1093 close (fs_fd); 1243 close (fs_fd);
1094#endif 1244#endif
… …
1131#if EV_FORK_ENABLE 1281#if EV_FORK_ENABLE
1132 array_free (fork, EMPTY); 1282 array_free (fork, EMPTY);
1133#endif 1283#endif
1134 array_free (prepare, EMPTY); 1284 array_free (prepare, EMPTY);
1135 array_free (check, EMPTY); 1285 array_free (check, EMPTY);
1286#if EV_ASYNC_ENABLE
1287 array_free (async, EMPTY);
1288#endif
1136 1289
1137 backend = 0; 1290 backend = 0;
1138} 1291}
1139 1292
1293#if EV_USE_INOTIFY
1140void inline_size infy_fork (EV_P); 1294void inline_size infy_fork (EV_P);
1295#endif
1141 1296
1142void inline_size 1297void inline_size
1143loop_fork (EV_P) 1298loop_fork (EV_P)
1144{ 1299{
1145#if EV_USE_PORT 1300#if EV_USE_PORT
… …
1153#endif 1308#endif
1154#if EV_USE_INOTIFY 1309#if EV_USE_INOTIFY
1155 infy_fork (EV_A); 1310 infy_fork (EV_A);
1156#endif 1311#endif
1157 1312
1158 if (ev_is_active (&sigev)) 1313 if (ev_is_active (&pipeev))
1159 { 1314 {
1160 /* default loop */ 1315 /* this "locks" the handlers against writing to the pipe */
1316 /* while we modify the fd vars */
1317 gotsig = 1;
1318#if EV_ASYNC_ENABLE
1319 gotasync = 1;
1320#endif
1161 1321
1162 ev_ref (EV_A); 1322 ev_ref (EV_A);
1163 ev_io_stop (EV_A_ &sigev); 1323 ev_io_stop (EV_A_ &pipeev);
1324
1325#if EV_USE_EVENTFD
1326 if (evfd >= 0)
1327 close (evfd);
1328#endif
1329
1330 if (evpipe [0] >= 0)
1331 {
1164 close (sigpipe [0]); 1332 close (evpipe [0]);
1165 close (sigpipe [1]); 1333 close (evpipe [1]);
1334 }
1166 1335
1167 while (pipe (sigpipe))
1168 syserr ("(libev) error creating pipe");
1169
1170 siginit (EV_A); 1336 evpipe_init (EV_A);
1337 /* now iterate over everything, in case we missed something */
1338 pipecb (EV_A_ &pipeev, EV_READ);
1171 } 1339 }
1172 1340
1173 postfork = 0; 1341 postfork = 0;
1174} 1342}
1175 1343
… …
1197} 1365}
1198 1366
1199void 1367void
1200ev_loop_fork (EV_P) 1368ev_loop_fork (EV_P)
1201{ 1369{
1202 postfork = 1; 1370 postfork = 1; /* must be in line with ev_default_fork */
1203} 1371}
1204 1372
1205#endif 1373#endif
1206 1374
1207#if EV_MULTIPLICITY 1375#if EV_MULTIPLICITY
… …
1210#else 1378#else
1211int 1379int
1212ev_default_loop (unsigned int flags) 1380ev_default_loop (unsigned int flags)
1213#endif 1381#endif
1214{ 1382{
1215 if (sigpipe [0] == sigpipe [1])
1216 if (pipe (sigpipe))
1217 return 0;
1218
1219 if (!ev_default_loop_ptr) 1383 if (!ev_default_loop_ptr)
1220 { 1384 {
1221#if EV_MULTIPLICITY 1385#if EV_MULTIPLICITY
1222 struct ev_loop *loop = ev_default_loop_ptr = &default_loop_struct; 1386 struct ev_loop *loop = ev_default_loop_ptr = &default_loop_struct;
1223#else 1387#else
… …
1226 1390
1227 loop_init (EV_A_ flags); 1391 loop_init (EV_A_ flags);
1228 1392
1229 if (ev_backend (EV_A)) 1393 if (ev_backend (EV_A))
1230 { 1394 {
1231 siginit (EV_A);
1232
1233#ifndef _WIN32 1395#ifndef _WIN32
1234 ev_signal_init (&childev, childcb, SIGCHLD); 1396 ev_signal_init (&childev, childcb, SIGCHLD);
1235 ev_set_priority (&childev, EV_MAXPRI); 1397 ev_set_priority (&childev, EV_MAXPRI);
1236 ev_signal_start (EV_A_ &childev); 1398 ev_signal_start (EV_A_ &childev);
1237 ev_unref (EV_A); /* child watcher should not keep loop alive */ 1399 ev_unref (EV_A); /* child watcher should not keep loop alive */
… …
1254#ifndef _WIN32 1416#ifndef _WIN32
1255 ev_ref (EV_A); /* child watcher */ 1417 ev_ref (EV_A); /* child watcher */
1256 ev_signal_stop (EV_A_ &childev); 1418 ev_signal_stop (EV_A_ &childev);
1257#endif 1419#endif
1258 1420
1259 ev_ref (EV_A); /* signal watcher */
1260 ev_io_stop (EV_A_ &sigev);
1261
1262 close (sigpipe [0]); sigpipe [0] = 0;
1263 close (sigpipe [1]); sigpipe [1] = 0;
1264
1265 loop_destroy (EV_A); 1421 loop_destroy (EV_A);
1266} 1422}
1267 1423
1268void 1424void
1269ev_default_fork (void) 1425ev_default_fork (void)
… …
1271#if EV_MULTIPLICITY 1427#if EV_MULTIPLICITY
1272 struct ev_loop *loop = ev_default_loop_ptr; 1428 struct ev_loop *loop = ev_default_loop_ptr;
1273#endif 1429#endif
1274 1430
1275 if (backend) 1431 if (backend)
1276 postfork = 1; 1432 postfork = 1; /* must be in line with ev_loop_fork */
1277} 1433}
1278 1434
1279/*****************************************************************************/ 1435/*****************************************************************************/
1280 1436
1281void 1437void
… …
1305} 1461}
1306 1462
1307void inline_size 1463void inline_size
1308timers_reify (EV_P) 1464timers_reify (EV_P)
1309{ 1465{
1310 while (timercnt && ((WT)timers [0])->at <= mn_now) 1466 while (timercnt && ev_at (timers [1]) <= mn_now)
1311 { 1467 {
1312 ev_timer *w = (ev_timer *)timers [0]; 1468 ev_timer *w = (ev_timer *)timers [1];
1313 1469
1314 assert (("inactive timer on timer heap detected", ev_is_active (w))); 1470 /*assert (("inactive timer on timer heap detected", ev_is_active (w)));*/
1315 1471
1316 /* first reschedule or stop timer */ 1472 /* first reschedule or stop timer */
1317 if (w->repeat) 1473 if (w->repeat)
1318 { 1474 {
1319 assert (("negative ev_timer repeat value found while processing timers", w->repeat > 0.)); 1475 assert (("negative ev_timer repeat value found while processing timers", w->repeat > 0.));
1320 1476
1321 ((WT)w)->at += w->repeat; 1477 ev_at (w) += w->repeat;
1322 if (((WT)w)->at < mn_now) 1478 if (ev_at (w) < mn_now)
1323 ((WT)w)->at = mn_now; 1479 ev_at (w) = mn_now;
1324 1480
1325 downheap (timers, timercnt, 0); 1481 downheap (timers, timercnt, 1);
1326 } 1482 }
1327 else 1483 else
1328 ev_timer_stop (EV_A_ w); /* nonrepeating: stop timer */ 1484 ev_timer_stop (EV_A_ w); /* nonrepeating: stop timer */
1329 1485
1330 ev_feed_event (EV_A_ (W)w, EV_TIMEOUT); 1486 ev_feed_event (EV_A_ (W)w, EV_TIMEOUT);
… …
1333 1489
1334#if EV_PERIODIC_ENABLE 1490#if EV_PERIODIC_ENABLE
1335void inline_size 1491void inline_size
1336periodics_reify (EV_P) 1492periodics_reify (EV_P)
1337{ 1493{
1338 while (periodiccnt && ((WT)periodics [0])->at <= ev_rt_now) 1494 while (periodiccnt && ev_at (periodics [1]) <= ev_rt_now)
1339 { 1495 {
1340 ev_periodic *w = (ev_periodic *)periodics [0]; 1496 ev_periodic *w = (ev_periodic *)periodics [1];
1341 1497
1342 /*assert (("inactive timer on periodic heap detected", ev_is_active (w)));*/ 1498 /*assert (("inactive timer on periodic heap detected", ev_is_active (w)));*/
1343 1499
1344 /* first reschedule or stop timer */ 1500 /* first reschedule or stop timer */
1345 if (w->reschedule_cb) 1501 if (w->reschedule_cb)
1346 { 1502 {
1347 ((WT)w)->at = w->reschedule_cb (w, ev_rt_now + TIME_EPSILON); 1503 ev_at (w) = w->reschedule_cb (w, ev_rt_now + TIME_EPSILON);
1348 assert (("ev_periodic reschedule callback returned time in the past", ((WT)w)->at > ev_rt_now)); 1504 assert (("ev_periodic reschedule callback returned time in the past", ev_at (w) > ev_rt_now));
1349 downheap (periodics, periodiccnt, 0); 1505 downheap (periodics, periodiccnt, 1);
1350 } 1506 }
1351 else if (w->interval) 1507 else if (w->interval)
1352 { 1508 {
1353 ((WT)w)->at = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval; 1509 ev_at (w) = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval;
1354 if (((WT)w)->at - ev_rt_now <= TIME_EPSILON) ((WT)w)->at += w->interval; 1510 if (ev_at (w) - ev_rt_now <= TIME_EPSILON) ev_at (w) += w->interval;
1355 assert (("ev_periodic timeout in the past detected while processing timers, negative interval?", ((WT)w)->at > ev_rt_now)); 1511 assert (("ev_periodic timeout in the past detected while processing timers, negative interval?", ev_at (w) > ev_rt_now));
1356 downheap (periodics, periodiccnt, 0); 1512 downheap (periodics, periodiccnt, 1);
1357 } 1513 }
1358 else 1514 else
1359 ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */ 1515 ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */
1360 1516
1361 ev_feed_event (EV_A_ (W)w, EV_PERIODIC); 1517 ev_feed_event (EV_A_ (W)w, EV_PERIODIC);
… …
1371 for (i = 0; i < periodiccnt; ++i) 1527 for (i = 0; i < periodiccnt; ++i)
1372 { 1528 {
1373 ev_periodic *w = (ev_periodic *)periodics [i]; 1529 ev_periodic *w = (ev_periodic *)periodics [i];
1374 1530
1375 if (w->reschedule_cb) 1531 if (w->reschedule_cb)
1376 ((WT)w)->at = w->reschedule_cb (w, ev_rt_now); 1532 ev_at (w) = w->reschedule_cb (w, ev_rt_now);
1377 else if (w->interval) 1533 else if (w->interval)
1378 ((WT)w)->at = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval; 1534 ev_at (w) = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval;
1379 } 1535 }
1380 1536
1381 /* now rebuild the heap */ 1537 /* now rebuild the heap */
1382 for (i = periodiccnt >> 1; i--; ) 1538 for (i = periodiccnt >> 1; i--; )
1383 downheap (periodics, periodiccnt, i); 1539 downheap (periodics, periodiccnt, i);
… …
1465 { 1621 {
1466#if EV_PERIODIC_ENABLE 1622#if EV_PERIODIC_ENABLE
1467 periodics_reschedule (EV_A); 1623 periodics_reschedule (EV_A);
1468#endif 1624#endif
1469 /* adjust timers. this is easy, as the offset is the same for all of them */ 1625 /* adjust timers. this is easy, as the offset is the same for all of them */
1470 for (i = 0; i < timercnt; ++i) 1626 for (i = 1; i <= timercnt; ++i)
1471 ((WT)timers [i])->at += ev_rt_now - mn_now; 1627 ev_at (timers [i]) += ev_rt_now - mn_now;
1472 } 1628 }
1473 1629
1474 mn_now = ev_rt_now; 1630 mn_now = ev_rt_now;
1475 } 1631 }
1476} 1632}
… …
1490static int loop_done; 1646static int loop_done;
1491 1647
1492void 1648void
1493ev_loop (EV_P_ int flags) 1649ev_loop (EV_P_ int flags)
1494{ 1650{
1495 loop_done = flags & (EVLOOP_ONESHOT | EVLOOP_NONBLOCK) 1651 loop_done = EVUNLOOP_CANCEL;
1496 ? EVUNLOOP_ONE
1497 : EVUNLOOP_CANCEL;
1498 1652
1499 call_pending (EV_A); /* in case we recurse, ensure ordering stays nice and clean */ 1653 call_pending (EV_A); /* in case we recurse, ensure ordering stays nice and clean */
1500 1654
1501 do 1655 do
1502 { 1656 {
… …
1548 1702
1549 waittime = MAX_BLOCKTIME; 1703 waittime = MAX_BLOCKTIME;
1550 1704
1551 if (timercnt) 1705 if (timercnt)
1552 { 1706 {
1553 ev_tstamp to = ((WT)timers [0])->at - mn_now + backend_fudge; 1707 ev_tstamp to = ev_at (timers [1]) - mn_now + backend_fudge;
1554 if (waittime > to) waittime = to; 1708 if (waittime > to) waittime = to;
1555 } 1709 }
1556 1710
1557#if EV_PERIODIC_ENABLE 1711#if EV_PERIODIC_ENABLE
1558 if (periodiccnt) 1712 if (periodiccnt)
1559 { 1713 {
1560 ev_tstamp to = ((WT)periodics [0])->at - ev_rt_now + backend_fudge; 1714 ev_tstamp to = ev_at (periodics [1]) - ev_rt_now + backend_fudge;
1561 if (waittime > to) waittime = to; 1715 if (waittime > to) waittime = to;
1562 } 1716 }
1563#endif 1717#endif
1564 1718
1565 if (expect_false (waittime < timeout_blocktime)) 1719 if (expect_false (waittime < timeout_blocktime))
… …
1598 /* queue check watchers, to be executed first */ 1752 /* queue check watchers, to be executed first */
1599 if (expect_false (checkcnt)) 1753 if (expect_false (checkcnt))
1600 queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK); 1754 queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK);
1601 1755
1602 call_pending (EV_A); 1756 call_pending (EV_A);
1603
1604 } 1757 }
1605 while (expect_true (activecnt && !loop_done)); 1758 while (expect_true (
1759 activecnt
1760 && !loop_done
1761 && !(flags & (EVLOOP_ONESHOT | EVLOOP_NONBLOCK))
1762 ));
1606 1763
1607 if (loop_done == EVUNLOOP_ONE) 1764 if (loop_done == EVUNLOOP_ONE)
1608 loop_done = EVUNLOOP_CANCEL; 1765 loop_done = EVUNLOOP_CANCEL;
1609} 1766}
1610 1767
… …
1728ev_timer_start (EV_P_ ev_timer *w) 1885ev_timer_start (EV_P_ ev_timer *w)
1729{ 1886{
1730 if (expect_false (ev_is_active (w))) 1887 if (expect_false (ev_is_active (w)))
1731 return; 1888 return;
1732 1889
1733 ((WT)w)->at += mn_now; 1890 ev_at (w) += mn_now;
1734 1891
1735 assert (("ev_timer_start called with negative timer repeat value", w->repeat >= 0.)); 1892 assert (("ev_timer_start called with negative timer repeat value", w->repeat >= 0.));
1736 1893
1737 ev_start (EV_A_ (W)w, ++timercnt); 1894 ev_start (EV_A_ (W)w, ++timercnt);
1738 array_needsize (WT, timers, timermax, timercnt, EMPTY2); 1895 array_needsize (WT, timers, timermax, timercnt + 1, EMPTY2);
1739 timers [timercnt - 1] = (WT)w; 1896 timers [timercnt] = (WT)w;
1740 upheap (timers, timercnt - 1); 1897 upheap (timers, timercnt);
1741 1898
1742 /*assert (("internal timer heap corruption", timers [((W)w)->active - 1] == w));*/ 1899 /*assert (("internal timer heap corruption", timers [((W)w)->active] == w));*/
1743} 1900}
1744 1901
1745void noinline 1902void noinline
1746ev_timer_stop (EV_P_ ev_timer *w) 1903ev_timer_stop (EV_P_ ev_timer *w)
1747{ 1904{
1748 clear_pending (EV_A_ (W)w); 1905 clear_pending (EV_A_ (W)w);
1749 if (expect_false (!ev_is_active (w))) 1906 if (expect_false (!ev_is_active (w)))
1750 return; 1907 return;
1751 1908
1752 assert (("internal timer heap corruption", timers [((W)w)->active - 1] == (WT)w)); 1909 assert (("internal timer heap corruption", timers [((W)w)->active] == (WT)w));
1753 1910
1754 { 1911 {
1755 int active = ((W)w)->active; 1912 int active = ((W)w)->active;
1756 1913
1757 if (expect_true (--active < --timercnt)) 1914 if (expect_true (active < timercnt))
1758 { 1915 {
1759 timers [active] = timers [timercnt]; 1916 timers [active] = timers [timercnt];
1760 adjustheap (timers, timercnt, active); 1917 adjustheap (timers, timercnt, active);
1761 } 1918 }
1919
1920 --timercnt;
1762 } 1921 }
1763 1922
1764 ((WT)w)->at -= mn_now; 1923 ev_at (w) -= mn_now;
1765 1924
1766 ev_stop (EV_A_ (W)w); 1925 ev_stop (EV_A_ (W)w);
1767} 1926}
1768 1927
1769void noinline 1928void noinline
… …
1771{ 1930{
1772 if (ev_is_active (w)) 1931 if (ev_is_active (w))
1773 { 1932 {
1774 if (w->repeat) 1933 if (w->repeat)
1775 { 1934 {
1776 ((WT)w)->at = mn_now + w->repeat; 1935 ev_at (w) = mn_now + w->repeat;
1777 adjustheap (timers, timercnt, ((W)w)->active - 1); 1936 adjustheap (timers, timercnt, ((W)w)->active);
1778 } 1937 }
1779 else 1938 else
1780 ev_timer_stop (EV_A_ w); 1939 ev_timer_stop (EV_A_ w);
1781 } 1940 }
1782 else if (w->repeat) 1941 else if (w->repeat)
… …
1792{ 1951{
1793 if (expect_false (ev_is_active (w))) 1952 if (expect_false (ev_is_active (w)))
1794 return; 1953 return;
1795 1954
1796 if (w->reschedule_cb) 1955 if (w->reschedule_cb)
1797 ((WT)w)->at = w->reschedule_cb (w, ev_rt_now); 1956 ev_at (w) = w->reschedule_cb (w, ev_rt_now);
1798 else if (w->interval) 1957 else if (w->interval)
1799 { 1958 {
1800 assert (("ev_periodic_start called with negative interval value", w->interval >= 0.)); 1959 assert (("ev_periodic_start called with negative interval value", w->interval >= 0.));
1801 /* this formula differs from the one in periodic_reify because we do not always round up */ 1960 /* this formula differs from the one in periodic_reify because we do not always round up */
1802 ((WT)w)->at = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval; 1961 ev_at (w) = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval;
1803 } 1962 }
1804 else 1963 else
1805 ((WT)w)->at = w->offset; 1964 ev_at (w) = w->offset;
1806 1965
1807 ev_start (EV_A_ (W)w, ++periodiccnt); 1966 ev_start (EV_A_ (W)w, ++periodiccnt);
1808 array_needsize (WT, periodics, periodicmax, periodiccnt, EMPTY2); 1967 array_needsize (WT, periodics, periodicmax, periodiccnt + 1, EMPTY2);
1809 periodics [periodiccnt - 1] = (WT)w; 1968 periodics [periodiccnt] = (WT)w;
1810 upheap (periodics, periodiccnt - 1); 1969 upheap (periodics, periodiccnt);
1811 1970
1812 /*assert (("internal periodic heap corruption", periodics [((W)w)->active - 1] == w));*/ 1971 /*assert (("internal periodic heap corruption", periodics [((W)w)->active - 1] == w));*/
1813} 1972}
1814 1973
1815void noinline 1974void noinline
… …
1817{ 1976{
1818 clear_pending (EV_A_ (W)w); 1977 clear_pending (EV_A_ (W)w);
1819 if (expect_false (!ev_is_active (w))) 1978 if (expect_false (!ev_is_active (w)))
1820 return; 1979 return;
1821 1980
1822 assert (("internal periodic heap corruption", periodics [((W)w)->active - 1] == (WT)w)); 1981 assert (("internal periodic heap corruption", periodics [((W)w)->active] == (WT)w));
1823 1982
1824 { 1983 {
1825 int active = ((W)w)->active; 1984 int active = ((W)w)->active;
1826 1985
1827 if (expect_true (--active < --periodiccnt)) 1986 if (expect_true (active < periodiccnt))
1828 { 1987 {
1829 periodics [active] = periodics [periodiccnt]; 1988 periodics [active] = periodics [periodiccnt];
1830 adjustheap (periodics, periodiccnt, active); 1989 adjustheap (periodics, periodiccnt, active);
1831 } 1990 }
1991
1992 --periodiccnt;
1832 } 1993 }
1833 1994
1834 ev_stop (EV_A_ (W)w); 1995 ev_stop (EV_A_ (W)w);
1835} 1996}
1836 1997
… …
1855#endif 2016#endif
1856 if (expect_false (ev_is_active (w))) 2017 if (expect_false (ev_is_active (w)))
1857 return; 2018 return;
1858 2019
1859 assert (("ev_signal_start called with illegal signal number", w->signum > 0)); 2020 assert (("ev_signal_start called with illegal signal number", w->signum > 0));
2021
2022 evpipe_init (EV_A);
1860 2023
1861 { 2024 {
1862#ifndef _WIN32 2025#ifndef _WIN32
1863 sigset_t full, prev; 2026 sigset_t full, prev;
1864 sigfillset (&full); 2027 sigfillset (&full);
… …
1876 wlist_add (&signals [w->signum - 1].head, (WL)w); 2039 wlist_add (&signals [w->signum - 1].head, (WL)w);
1877 2040
1878 if (!((WL)w)->next) 2041 if (!((WL)w)->next)
1879 { 2042 {
1880#if _WIN32 2043#if _WIN32
1881 signal (w->signum, sighandler); 2044 signal (w->signum, ev_sighandler);
1882#else 2045#else
1883 struct sigaction sa; 2046 struct sigaction sa;
1884 sa.sa_handler = sighandler; 2047 sa.sa_handler = ev_sighandler;
1885 sigfillset (&sa.sa_mask); 2048 sigfillset (&sa.sa_mask);
1886 sa.sa_flags = SA_RESTART; /* if restarting works we save one iteration */ 2049 sa.sa_flags = SA_RESTART; /* if restarting works we save one iteration */
1887 sigaction (w->signum, &sa, 0); 2050 sigaction (w->signum, &sa, 0);
1888#endif 2051#endif
1889 } 2052 }
… …
2378 2541
2379 ev_stop (EV_A_ (W)w); 2542 ev_stop (EV_A_ (W)w);
2380} 2543}
2381#endif 2544#endif
2382 2545
2546#if EV_ASYNC_ENABLE
2547void
2548ev_async_start (EV_P_ ev_async *w)
2549{
2550 if (expect_false (ev_is_active (w)))
2551 return;
2552
2553 evpipe_init (EV_A);
2554
2555 ev_start (EV_A_ (W)w, ++asynccnt);
2556 array_needsize (ev_async *, asyncs, asyncmax, asynccnt, EMPTY2);
2557 asyncs [asynccnt - 1] = w;
2558}
2559
2560void
2561ev_async_stop (EV_P_ ev_async *w)
2562{
2563 clear_pending (EV_A_ (W)w);
2564 if (expect_false (!ev_is_active (w)))
2565 return;
2566
2567 {
2568 int active = ((W)w)->active;
2569 asyncs [active - 1] = asyncs [--asynccnt];
2570 ((W)asyncs [active - 1])->active = active;
2571 }
2572
2573 ev_stop (EV_A_ (W)w);
2574}
2575
2576void
2577ev_async_send (EV_P_ ev_async *w)
2578{
2579 w->sent = 1;
2580 evpipe_write (EV_A_ &gotasync);
2581}
2582#endif
2583
2383/*****************************************************************************/ 2584/*****************************************************************************/
2384 2585
2385struct ev_once 2586struct ev_once
2386{ 2587{
2387 ev_io io; 2588 ev_io io;

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