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Comparing libev/ev.c (file contents):
Revision 1.196 by root, Sat Dec 22 12:43:28 2007 UTC vs.
Revision 1.211 by root, Tue Feb 19 17:09:28 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 7 * Redistribution and use in source and binary forms, with or without modifica-
8 * modification, are permitted provided that the following conditions are 8 * tion, are permitted provided that the following conditions are met:
9 * met: 9 *
10 * 1. Redistributions of source code must retain the above copyright notice,
11 * this list of conditions and the following disclaimer.
12 *
13 * 2. Redistributions in binary form must reproduce the above copyright
14 * notice, this list of conditions and the following disclaimer in the
15 * documentation and/or other materials provided with the distribution.
16 *
17 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR IMPLIED
18 * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MER-
19 * CHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO
20 * EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPE-
21 * CIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
22 * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS;
23 * OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
24 * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTH-
25 * ERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
26 * OF THE POSSIBILITY OF SUCH DAMAGE.
10 * 27 *
11 * * Redistributions of source code must retain the above copyright 28 * Alternatively, the contents of this file may be used under the terms of
12 * notice, this list of conditions and the following disclaimer. 29 * the GNU General Public License ("GPL") version 2 or any later version,
13 * 30 * in which case the provisions of the GPL are applicable instead of
14 * * Redistributions in binary form must reproduce the above 31 * the above. If you wish to allow the use of your version of this file
15 * copyright notice, this list of conditions and the following 32 * only under the terms of the GPL and not to allow others to use your
16 * disclaimer in the documentation and/or other materials provided 33 * version of this file under the BSD license, indicate your decision
17 * with the distribution. 34 * by deleting the provisions above and replace them with the notice
18 * 35 * and other provisions required by the GPL. If you do not delete the
19 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS 36 * provisions above, a recipient may use your version of this file under
20 * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT 37 * either the BSD or the GPL.
21 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
22 * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
23 * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
24 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
25 * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
26 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
27 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
28 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
29 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
30 */ 38 */
31 39
32#ifdef __cplusplus 40#ifdef __cplusplus
33extern "C" { 41extern "C" {
34#endif 42#endif
… …
280 288
281typedef ev_watcher *W; 289typedef ev_watcher *W;
282typedef ev_watcher_list *WL; 290typedef ev_watcher_list *WL;
283typedef ev_watcher_time *WT; 291typedef ev_watcher_time *WT;
284 292
293#if EV_USE_MONOTONIC
285/* sig_atomic_t is used to avoid per-thread variables or locking but still */ 294/* sig_atomic_t is used to avoid per-thread variables or locking but still */
286/* giving it a reasonably high chance of working on typical architetcures */ 295/* giving it a reasonably high chance of working on typical architetcures */
287static sig_atomic_t have_monotonic; /* did clock_gettime (CLOCK_MONOTONIC) work? */ 296static EV_ATOMIC_T have_monotonic; /* did clock_gettime (CLOCK_MONOTONIC) work? */
297#endif
288 298
289#ifdef _WIN32 299#ifdef _WIN32
290# include "ev_win32.c" 300# include "ev_win32.c"
291#endif 301#endif
292 302
… …
590 600
591#if EV_SELECT_IS_WINSOCKET 601#if EV_SELECT_IS_WINSOCKET
592 if (events) 602 if (events)
593 { 603 {
594 unsigned long argp; 604 unsigned long argp;
605 #ifdef EV_FD_TO_WIN32_HANDLE
606 anfd->handle = EV_FD_TO_WIN32_HANDLE (fd);
607 #else
595 anfd->handle = _get_osfhandle (fd); 608 anfd->handle = _get_osfhandle (fd);
609 #endif
596 assert (("libev only supports socket fds in this configuration", ioctlsocket (anfd->handle, FIONREAD, &argp) == 0)); 610 assert (("libev only supports socket fds in this configuration", ioctlsocket (anfd->handle, FIONREAD, &argp) == 0));
597 } 611 }
598#endif 612#endif
599 613
600 { 614 {
… …
749/*****************************************************************************/ 763/*****************************************************************************/
750 764
751typedef struct 765typedef struct
752{ 766{
753 WL head; 767 WL head;
754 sig_atomic_t volatile gotsig; 768 EV_ATOMIC_T gotsig;
755} ANSIG; 769} ANSIG;
756 770
757static ANSIG *signals; 771static ANSIG *signals;
758static int signalmax; 772static int signalmax;
759 773
760static int sigpipe [2]; 774static EV_ATOMIC_T gotsig;
761static sig_atomic_t volatile gotsig;
762static ev_io sigev;
763 775
764void inline_size 776void inline_size
765signals_init (ANSIG *base, int count) 777signals_init (ANSIG *base, int count)
766{ 778{
767 while (count--) 779 while (count--)
… …
771 783
772 ++base; 784 ++base;
773 } 785 }
774} 786}
775 787
776static void 788/*****************************************************************************/
777sighandler (int signum)
778{
779#if _WIN32
780 signal (signum, sighandler);
781#endif
782
783 signals [signum - 1].gotsig = 1;
784
785 if (!gotsig)
786 {
787 int old_errno = errno;
788 gotsig = 1;
789 write (sigpipe [1], &signum, 1);
790 errno = old_errno;
791 }
792}
793
794void noinline
795ev_feed_signal_event (EV_P_ int signum)
796{
797 WL w;
798
799#if EV_MULTIPLICITY
800 assert (("feeding signal events is only supported in the default loop", loop == ev_default_loop_ptr));
801#endif
802
803 --signum;
804
805 if (signum < 0 || signum >= signalmax)
806 return;
807
808 signals [signum].gotsig = 0;
809
810 for (w = signals [signum].head; w; w = w->next)
811 ev_feed_event (EV_A_ (W)w, EV_SIGNAL);
812}
813
814static void
815sigcb (EV_P_ ev_io *iow, int revents)
816{
817 int signum;
818
819 read (sigpipe [0], &revents, 1);
820 gotsig = 0;
821
822 for (signum = signalmax; signum--; )
823 if (signals [signum].gotsig)
824 ev_feed_signal_event (EV_A_ signum + 1);
825}
826 789
827void inline_speed 790void inline_speed
828fd_intern (int fd) 791fd_intern (int fd)
829{ 792{
830#ifdef _WIN32 793#ifdef _WIN32
… …
835 fcntl (fd, F_SETFL, O_NONBLOCK); 798 fcntl (fd, F_SETFL, O_NONBLOCK);
836#endif 799#endif
837} 800}
838 801
839static void noinline 802static void noinline
840siginit (EV_P) 803evpipe_init (EV_P)
841{ 804{
805 if (!ev_is_active (&pipeev))
806 {
807 while (pipe (evpipe))
808 syserr ("(libev) error creating signal/async pipe");
809
842 fd_intern (sigpipe [0]); 810 fd_intern (evpipe [0]);
843 fd_intern (sigpipe [1]); 811 fd_intern (evpipe [1]);
844 812
845 ev_io_set (&sigev, sigpipe [0], EV_READ); 813 ev_io_set (&pipeev, evpipe [0], EV_READ);
846 ev_io_start (EV_A_ &sigev); 814 ev_io_start (EV_A_ &pipeev);
847 ev_unref (EV_A); /* child watcher should not keep loop alive */ 815 ev_unref (EV_A); /* watcher should not keep loop alive */
816
817 /* in case we received the signal before we had the chance of installing a handler */
818 ev_feed_event (EV_A_ &pipeev, 0);
819 }
820}
821
822void inline_size
823evpipe_write (EV_P_ int sig, int async)
824{
825 if (!(gotasync || gotsig))
826 {
827 int old_errno = errno; /* save errno becaue write might clobber it */
828
829 if (sig) gotsig = 1;
830 if (async) gotasync = 1;
831
832 write (evpipe [1], &old_errno, 1);
833
834 errno = old_errno;
835 }
836}
837
838static void
839pipecb (EV_P_ ev_io *iow, int revents)
840{
841 {
842 int dummy;
843 read (evpipe [0], &dummy, 1);
844 }
845
846 if (gotsig && ev_is_default_loop (EV_A))
847 {
848 int signum;
849 gotsig = 0;
850
851 for (signum = signalmax; signum--; )
852 if (signals [signum].gotsig)
853 ev_feed_signal_event (EV_A_ signum + 1);
854 }
855
856#if EV_ASYNC_ENABLE
857 if (gotasync)
858 {
859 int i;
860 gotasync = 0;
861
862 for (i = asynccnt; i--; )
863 if (asyncs [i]->sent)
864 {
865 asyncs [i]->sent = 0;
866 ev_feed_event (EV_A_ asyncs [i], EV_ASYNC);
867 }
868 }
869#endif
848} 870}
849 871
850/*****************************************************************************/ 872/*****************************************************************************/
851 873
874static void
875sighandler (int signum)
876{
877#if EV_MULTIPLICITY
878 struct ev_loop *loop = &default_loop_struct;
879#endif
880
881#if _WIN32
882 signal (signum, sighandler);
883#endif
884
885 signals [signum - 1].gotsig = 1;
886 evpipe_write (EV_A_ 1, 0);
887}
888
889void noinline
890ev_feed_signal_event (EV_P_ int signum)
891{
892 WL w;
893
894#if EV_MULTIPLICITY
895 assert (("feeding signal events is only supported in the default loop", loop == ev_default_loop_ptr));
896#endif
897
898 --signum;
899
900 if (signum < 0 || signum >= signalmax)
901 return;
902
903 signals [signum].gotsig = 0;
904
905 for (w = signals [signum].head; w; w = w->next)
906 ev_feed_event (EV_A_ (W)w, EV_SIGNAL);
907}
908
909/*****************************************************************************/
910
852static WL childs [EV_PID_HASHSIZE]; 911static WL childs [EV_PID_HASHSIZE];
853 912
854#ifndef _WIN32 913#ifndef _WIN32
855 914
856static ev_signal childev; 915static ev_signal childev;
916
917#ifndef WIFCONTINUED
918# define WIFCONTINUED(status) 0
919#endif
857 920
858void inline_speed 921void inline_speed
859child_reap (EV_P_ ev_signal *sw, int chain, int pid, int status) 922child_reap (EV_P_ ev_signal *sw, int chain, int pid, int status)
860{ 923{
861 ev_child *w; 924 ev_child *w;
925 int traced = WIFSTOPPED (status) || WIFCONTINUED (status);
862 926
863 for (w = (ev_child *)childs [chain & (EV_PID_HASHSIZE - 1)]; w; w = (ev_child *)((WL)w)->next) 927 for (w = (ev_child *)childs [chain & (EV_PID_HASHSIZE - 1)]; w; w = (ev_child *)((WL)w)->next)
928 {
864 if (w->pid == pid || !w->pid) 929 if ((w->pid == pid || !w->pid)
930 && (!traced || (w->flags & 1)))
865 { 931 {
866 ev_set_priority (w, ev_priority (sw)); /* need to do it *now* */ 932 ev_set_priority (w, ev_priority (sw)); /* need to do it *now* */
867 w->rpid = pid; 933 w->rpid = pid;
868 w->rstatus = status; 934 w->rstatus = status;
869 ev_feed_event (EV_A_ (W)w, EV_CHILD); 935 ev_feed_event (EV_A_ (W)w, EV_CHILD);
870 } 936 }
937 }
871} 938}
872 939
873#ifndef WCONTINUED 940#ifndef WCONTINUED
874# define WCONTINUED 0 941# define WCONTINUED 0
875#endif 942#endif
… …
978 1045
979 /* epoll embeddability broken on all linux versions up to at least 2.6.23 */ 1046 /* epoll embeddability broken on all linux versions up to at least 2.6.23 */
980 /* please fix it and tell me how to detect the fix */ 1047 /* please fix it and tell me how to detect the fix */
981 flags &= ~EVBACKEND_EPOLL; 1048 flags &= ~EVBACKEND_EPOLL;
982 1049
983#ifdef __APPLE__
984 /* is there anything thats not broken on darwin? */
985 flags &= ~EVBACKEND_KQUEUE;
986#endif
987
988 return flags; 1050 return flags;
989} 1051}
990 1052
991unsigned int 1053unsigned int
992ev_backend (EV_P) 1054ev_backend (EV_P)
… …
1023 if (!clock_gettime (CLOCK_MONOTONIC, &ts)) 1085 if (!clock_gettime (CLOCK_MONOTONIC, &ts))
1024 have_monotonic = 1; 1086 have_monotonic = 1;
1025 } 1087 }
1026#endif 1088#endif
1027 1089
1028 ev_rt_now = ev_time (); 1090 ev_rt_now = ev_time ();
1029 mn_now = get_clock (); 1091 mn_now = get_clock ();
1030 now_floor = mn_now; 1092 now_floor = mn_now;
1031 rtmn_diff = ev_rt_now - mn_now; 1093 rtmn_diff = ev_rt_now - mn_now;
1032 1094
1033 io_blocktime = 0.; 1095 io_blocktime = 0.;
1034 timeout_blocktime = 0.; 1096 timeout_blocktime = 0.;
1097 backend = 0;
1098 backend_fd = -1;
1099 gotasync = 0;
1100#if EV_USE_INOTIFY
1101 fs_fd = -2;
1102#endif
1035 1103
1036 /* pid check not overridable via env */ 1104 /* pid check not overridable via env */
1037#ifndef _WIN32 1105#ifndef _WIN32
1038 if (flags & EVFLAG_FORKCHECK) 1106 if (flags & EVFLAG_FORKCHECK)
1039 curpid = getpid (); 1107 curpid = getpid ();
… …
1045 flags = atoi (getenv ("LIBEV_FLAGS")); 1113 flags = atoi (getenv ("LIBEV_FLAGS"));
1046 1114
1047 if (!(flags & 0x0000ffffUL)) 1115 if (!(flags & 0x0000ffffUL))
1048 flags |= ev_recommended_backends (); 1116 flags |= ev_recommended_backends ();
1049 1117
1050 backend = 0;
1051 backend_fd = -1;
1052#if EV_USE_INOTIFY
1053 fs_fd = -2;
1054#endif
1055
1056#if EV_USE_PORT 1118#if EV_USE_PORT
1057 if (!backend && (flags & EVBACKEND_PORT )) backend = port_init (EV_A_ flags); 1119 if (!backend && (flags & EVBACKEND_PORT )) backend = port_init (EV_A_ flags);
1058#endif 1120#endif
1059#if EV_USE_KQUEUE 1121#if EV_USE_KQUEUE
1060 if (!backend && (flags & EVBACKEND_KQUEUE)) backend = kqueue_init (EV_A_ flags); 1122 if (!backend && (flags & EVBACKEND_KQUEUE)) backend = kqueue_init (EV_A_ flags);
… …
1067#endif 1129#endif
1068#if EV_USE_SELECT 1130#if EV_USE_SELECT
1069 if (!backend && (flags & EVBACKEND_SELECT)) backend = select_init (EV_A_ flags); 1131 if (!backend && (flags & EVBACKEND_SELECT)) backend = select_init (EV_A_ flags);
1070#endif 1132#endif
1071 1133
1072 ev_init (&sigev, sigcb); 1134 ev_init (&pipeev, pipecb);
1073 ev_set_priority (&sigev, EV_MAXPRI); 1135 ev_set_priority (&pipeev, EV_MAXPRI);
1074 } 1136 }
1075} 1137}
1076 1138
1077static void noinline 1139static void noinline
1078loop_destroy (EV_P) 1140loop_destroy (EV_P)
1079{ 1141{
1080 int i; 1142 int i;
1143
1144 if (ev_is_active (&pipeev))
1145 {
1146 ev_ref (EV_A); /* signal watcher */
1147 ev_io_stop (EV_A_ &pipeev);
1148
1149 close (evpipe [0]); evpipe [0] = 0;
1150 close (evpipe [1]); evpipe [1] = 0;
1151 }
1081 1152
1082#if EV_USE_INOTIFY 1153#if EV_USE_INOTIFY
1083 if (fs_fd >= 0) 1154 if (fs_fd >= 0)
1084 close (fs_fd); 1155 close (fs_fd);
1085#endif 1156#endif
… …
1122#if EV_FORK_ENABLE 1193#if EV_FORK_ENABLE
1123 array_free (fork, EMPTY); 1194 array_free (fork, EMPTY);
1124#endif 1195#endif
1125 array_free (prepare, EMPTY); 1196 array_free (prepare, EMPTY);
1126 array_free (check, EMPTY); 1197 array_free (check, EMPTY);
1198#if EV_ASYNC_ENABLE
1199 array_free (async, EMPTY);
1200#endif
1127 1201
1128 backend = 0; 1202 backend = 0;
1129} 1203}
1130 1204
1131void inline_size infy_fork (EV_P); 1205void inline_size infy_fork (EV_P);
… …
1144#endif 1218#endif
1145#if EV_USE_INOTIFY 1219#if EV_USE_INOTIFY
1146 infy_fork (EV_A); 1220 infy_fork (EV_A);
1147#endif 1221#endif
1148 1222
1149 if (ev_is_active (&sigev)) 1223 if (ev_is_active (&pipeev))
1150 { 1224 {
1151 /* default loop */ 1225 /* this "locks" the handlers against writing to the pipe */
1226 gotsig = gotasync = 1;
1152 1227
1153 ev_ref (EV_A); 1228 ev_ref (EV_A);
1154 ev_io_stop (EV_A_ &sigev); 1229 ev_io_stop (EV_A_ &pipeev);
1155 close (sigpipe [0]); 1230 close (evpipe [0]);
1156 close (sigpipe [1]); 1231 close (evpipe [1]);
1157 1232
1158 while (pipe (sigpipe))
1159 syserr ("(libev) error creating pipe");
1160
1161 siginit (EV_A); 1233 evpipe_init (EV_A);
1234 /* now iterate over everything, in case we missed something */
1235 pipecb (EV_A_ &pipeev, EV_READ);
1162 } 1236 }
1163 1237
1164 postfork = 0; 1238 postfork = 0;
1165} 1239}
1166 1240
… …
1188} 1262}
1189 1263
1190void 1264void
1191ev_loop_fork (EV_P) 1265ev_loop_fork (EV_P)
1192{ 1266{
1193 postfork = 1; 1267 postfork = 1; /* must be in line with ev_default_fork */
1194} 1268}
1195 1269
1196#endif 1270#endif
1197 1271
1198#if EV_MULTIPLICITY 1272#if EV_MULTIPLICITY
… …
1201#else 1275#else
1202int 1276int
1203ev_default_loop (unsigned int flags) 1277ev_default_loop (unsigned int flags)
1204#endif 1278#endif
1205{ 1279{
1206 if (sigpipe [0] == sigpipe [1])
1207 if (pipe (sigpipe))
1208 return 0;
1209
1210 if (!ev_default_loop_ptr) 1280 if (!ev_default_loop_ptr)
1211 { 1281 {
1212#if EV_MULTIPLICITY 1282#if EV_MULTIPLICITY
1213 struct ev_loop *loop = ev_default_loop_ptr = &default_loop_struct; 1283 struct ev_loop *loop = ev_default_loop_ptr = &default_loop_struct;
1214#else 1284#else
… …
1217 1287
1218 loop_init (EV_A_ flags); 1288 loop_init (EV_A_ flags);
1219 1289
1220 if (ev_backend (EV_A)) 1290 if (ev_backend (EV_A))
1221 { 1291 {
1222 siginit (EV_A);
1223
1224#ifndef _WIN32 1292#ifndef _WIN32
1225 ev_signal_init (&childev, childcb, SIGCHLD); 1293 ev_signal_init (&childev, childcb, SIGCHLD);
1226 ev_set_priority (&childev, EV_MAXPRI); 1294 ev_set_priority (&childev, EV_MAXPRI);
1227 ev_signal_start (EV_A_ &childev); 1295 ev_signal_start (EV_A_ &childev);
1228 ev_unref (EV_A); /* child watcher should not keep loop alive */ 1296 ev_unref (EV_A); /* child watcher should not keep loop alive */
… …
1245#ifndef _WIN32 1313#ifndef _WIN32
1246 ev_ref (EV_A); /* child watcher */ 1314 ev_ref (EV_A); /* child watcher */
1247 ev_signal_stop (EV_A_ &childev); 1315 ev_signal_stop (EV_A_ &childev);
1248#endif 1316#endif
1249 1317
1250 ev_ref (EV_A); /* signal watcher */
1251 ev_io_stop (EV_A_ &sigev);
1252
1253 close (sigpipe [0]); sigpipe [0] = 0;
1254 close (sigpipe [1]); sigpipe [1] = 0;
1255
1256 loop_destroy (EV_A); 1318 loop_destroy (EV_A);
1257} 1319}
1258 1320
1259void 1321void
1260ev_default_fork (void) 1322ev_default_fork (void)
… …
1262#if EV_MULTIPLICITY 1324#if EV_MULTIPLICITY
1263 struct ev_loop *loop = ev_default_loop_ptr; 1325 struct ev_loop *loop = ev_default_loop_ptr;
1264#endif 1326#endif
1265 1327
1266 if (backend) 1328 if (backend)
1267 postfork = 1; 1329 postfork = 1; /* must be in line with ev_loop_fork */
1268} 1330}
1269 1331
1270/*****************************************************************************/ 1332/*****************************************************************************/
1271 1333
1272void 1334void
… …
1846#endif 1908#endif
1847 if (expect_false (ev_is_active (w))) 1909 if (expect_false (ev_is_active (w)))
1848 return; 1910 return;
1849 1911
1850 assert (("ev_signal_start called with illegal signal number", w->signum > 0)); 1912 assert (("ev_signal_start called with illegal signal number", w->signum > 0));
1913
1914 evpipe_init (EV_A);
1851 1915
1852 { 1916 {
1853#ifndef _WIN32 1917#ifndef _WIN32
1854 sigset_t full, prev; 1918 sigset_t full, prev;
1855 sigfillset (&full); 1919 sigfillset (&full);
… …
2369 2433
2370 ev_stop (EV_A_ (W)w); 2434 ev_stop (EV_A_ (W)w);
2371} 2435}
2372#endif 2436#endif
2373 2437
2438#if EV_ASYNC_ENABLE
2439void
2440ev_async_start (EV_P_ ev_async *w)
2441{
2442 if (expect_false (ev_is_active (w)))
2443 return;
2444
2445 evpipe_init (EV_A);
2446
2447 ev_start (EV_A_ (W)w, ++asynccnt);
2448 array_needsize (ev_async *, asyncs, asyncmax, asynccnt, EMPTY2);
2449 asyncs [asynccnt - 1] = w;
2450}
2451
2452void
2453ev_async_stop (EV_P_ ev_async *w)
2454{
2455 clear_pending (EV_A_ (W)w);
2456 if (expect_false (!ev_is_active (w)))
2457 return;
2458
2459 {
2460 int active = ((W)w)->active;
2461 asyncs [active - 1] = asyncs [--asynccnt];
2462 ((W)asyncs [active - 1])->active = active;
2463 }
2464
2465 ev_stop (EV_A_ (W)w);
2466}
2467
2468void
2469ev_async_send (EV_P_ ev_async *w)
2470{
2471 w->sent = 1;
2472 evpipe_write (EV_A_ 0, 1);
2473}
2474#endif
2475
2374/*****************************************************************************/ 2476/*****************************************************************************/
2375 2477
2376struct ev_once 2478struct ev_once
2377{ 2479{
2378 ev_io io; 2480 ev_io io;

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