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 |
41 | extern "C" { |
41 | extern "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 |
|
|
275 | extern "C" { |
|
|
276 | # endif |
|
|
277 | int eventfd (unsigned int initval, int flags); |
|
|
278 | # ifdef __cplusplus |
|
|
279 | } |
|
|
280 | # endif |
244 | #endif |
281 | #endif |
245 | |
282 | |
246 | /**/ |
283 | /**/ |
247 | |
284 | |
248 | /* |
285 | /* |
… | |
… | |
291 | typedef ev_watcher_time *WT; |
328 | typedef ev_watcher_time *WT; |
292 | |
329 | |
293 | #if EV_USE_MONOTONIC |
330 | #if EV_USE_MONOTONIC |
294 | /* sig_atomic_t is used to avoid per-thread variables or locking but still */ |
331 | /* 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 */ |
332 | /* giving it a reasonably high chance of working on typical architetcures */ |
296 | static sig_atomic_t have_monotonic; /* did clock_gettime (CLOCK_MONOTONIC) work? */ |
333 | static EV_ATOMIC_T have_monotonic; /* did clock_gettime (CLOCK_MONOTONIC) work? */ |
297 | #endif |
334 | #endif |
298 | |
335 | |
299 | #ifdef _WIN32 |
336 | #ifdef _WIN32 |
300 | # include "ev_win32.c" |
337 | # include "ev_win32.c" |
301 | #endif |
338 | #endif |
… | |
… | |
451 | ts.tv_sec = (time_t)delay; |
488 | ts.tv_sec = (time_t)delay; |
452 | ts.tv_nsec = (long)((delay - (ev_tstamp)(ts.tv_sec)) * 1e9); |
489 | ts.tv_nsec = (long)((delay - (ev_tstamp)(ts.tv_sec)) * 1e9); |
453 | |
490 | |
454 | nanosleep (&ts, 0); |
491 | nanosleep (&ts, 0); |
455 | #elif defined(_WIN32) |
492 | #elif defined(_WIN32) |
456 | Sleep (delay * 1e3); |
493 | Sleep ((unsigned long)(delay * 1e3)); |
457 | #else |
494 | #else |
458 | struct timeval tv; |
495 | struct timeval tv; |
459 | |
496 | |
460 | tv.tv_sec = (time_t)delay; |
497 | tv.tv_sec = (time_t)delay; |
461 | tv.tv_usec = (long)((delay - (ev_tstamp)(tv.tv_sec)) * 1e6); |
498 | tv.tv_usec = (long)((delay - (ev_tstamp)(tv.tv_sec)) * 1e6); |
… | |
… | |
600 | |
637 | |
601 | #if EV_SELECT_IS_WINSOCKET |
638 | #if EV_SELECT_IS_WINSOCKET |
602 | if (events) |
639 | if (events) |
603 | { |
640 | { |
604 | unsigned long argp; |
641 | unsigned long argp; |
|
|
642 | #ifdef EV_FD_TO_WIN32_HANDLE |
|
|
643 | anfd->handle = EV_FD_TO_WIN32_HANDLE (fd); |
|
|
644 | #else |
605 | anfd->handle = _get_osfhandle (fd); |
645 | anfd->handle = _get_osfhandle (fd); |
|
|
646 | #endif |
606 | assert (("libev only supports socket fds in this configuration", ioctlsocket (anfd->handle, FIONREAD, &argp) == 0)); |
647 | assert (("libev only supports socket fds in this configuration", ioctlsocket (anfd->handle, FIONREAD, &argp) == 0)); |
607 | } |
648 | } |
608 | #endif |
649 | #endif |
609 | |
650 | |
610 | { |
651 | { |
… | |
… | |
759 | /*****************************************************************************/ |
800 | /*****************************************************************************/ |
760 | |
801 | |
761 | typedef struct |
802 | typedef struct |
762 | { |
803 | { |
763 | WL head; |
804 | WL head; |
764 | sig_atomic_t volatile gotsig; |
805 | EV_ATOMIC_T gotsig; |
765 | } ANSIG; |
806 | } ANSIG; |
766 | |
807 | |
767 | static ANSIG *signals; |
808 | static ANSIG *signals; |
768 | static int signalmax; |
809 | static int signalmax; |
769 | |
810 | |
770 | static int sigpipe [2]; |
811 | static EV_ATOMIC_T gotsig; |
771 | static sig_atomic_t volatile gotsig; |
|
|
772 | static ev_io sigev; |
|
|
773 | |
812 | |
774 | void inline_size |
813 | void inline_size |
775 | signals_init (ANSIG *base, int count) |
814 | signals_init (ANSIG *base, int count) |
776 | { |
815 | { |
777 | while (count--) |
816 | while (count--) |
… | |
… | |
781 | |
820 | |
782 | ++base; |
821 | ++base; |
783 | } |
822 | } |
784 | } |
823 | } |
785 | |
824 | |
786 | static void |
825 | /*****************************************************************************/ |
787 | sighandler (int signum) |
|
|
788 | { |
|
|
789 | #if _WIN32 |
|
|
790 | signal (signum, sighandler); |
|
|
791 | #endif |
|
|
792 | |
|
|
793 | signals [signum - 1].gotsig = 1; |
|
|
794 | |
|
|
795 | if (!gotsig) |
|
|
796 | { |
|
|
797 | int old_errno = errno; |
|
|
798 | gotsig = 1; |
|
|
799 | write (sigpipe [1], &signum, 1); |
|
|
800 | errno = old_errno; |
|
|
801 | } |
|
|
802 | } |
|
|
803 | |
|
|
804 | void noinline |
|
|
805 | ev_feed_signal_event (EV_P_ int signum) |
|
|
806 | { |
|
|
807 | WL w; |
|
|
808 | |
|
|
809 | #if EV_MULTIPLICITY |
|
|
810 | assert (("feeding signal events is only supported in the default loop", loop == ev_default_loop_ptr)); |
|
|
811 | #endif |
|
|
812 | |
|
|
813 | --signum; |
|
|
814 | |
|
|
815 | if (signum < 0 || signum >= signalmax) |
|
|
816 | return; |
|
|
817 | |
|
|
818 | signals [signum].gotsig = 0; |
|
|
819 | |
|
|
820 | for (w = signals [signum].head; w; w = w->next) |
|
|
821 | ev_feed_event (EV_A_ (W)w, EV_SIGNAL); |
|
|
822 | } |
|
|
823 | |
|
|
824 | static void |
|
|
825 | sigcb (EV_P_ ev_io *iow, int revents) |
|
|
826 | { |
|
|
827 | int signum; |
|
|
828 | |
|
|
829 | read (sigpipe [0], &revents, 1); |
|
|
830 | gotsig = 0; |
|
|
831 | |
|
|
832 | for (signum = signalmax; signum--; ) |
|
|
833 | if (signals [signum].gotsig) |
|
|
834 | ev_feed_signal_event (EV_A_ signum + 1); |
|
|
835 | } |
|
|
836 | |
826 | |
837 | void inline_speed |
827 | void inline_speed |
838 | fd_intern (int fd) |
828 | fd_intern (int fd) |
839 | { |
829 | { |
840 | #ifdef _WIN32 |
830 | #ifdef _WIN32 |
… | |
… | |
845 | fcntl (fd, F_SETFL, O_NONBLOCK); |
835 | fcntl (fd, F_SETFL, O_NONBLOCK); |
846 | #endif |
836 | #endif |
847 | } |
837 | } |
848 | |
838 | |
849 | static void noinline |
839 | static void noinline |
850 | siginit (EV_P) |
840 | evpipe_init (EV_P) |
851 | { |
841 | { |
|
|
842 | if (!ev_is_active (&pipeev)) |
|
|
843 | { |
|
|
844 | #if EV_USE_EVENTFD |
|
|
845 | if ((evfd = eventfd (0, 0)) >= 0) |
|
|
846 | { |
|
|
847 | evpipe [0] = -1; |
|
|
848 | fd_intern (evfd); |
|
|
849 | ev_io_set (&pipeev, evfd, EV_READ); |
|
|
850 | } |
|
|
851 | else |
|
|
852 | #endif |
|
|
853 | { |
|
|
854 | while (pipe (evpipe)) |
|
|
855 | syserr ("(libev) error creating signal/async pipe"); |
|
|
856 | |
852 | fd_intern (sigpipe [0]); |
857 | fd_intern (evpipe [0]); |
853 | fd_intern (sigpipe [1]); |
858 | fd_intern (evpipe [1]); |
|
|
859 | ev_io_set (&pipeev, evpipe [0], EV_READ); |
|
|
860 | } |
854 | |
861 | |
855 | ev_io_set (&sigev, sigpipe [0], EV_READ); |
|
|
856 | ev_io_start (EV_A_ &sigev); |
862 | ev_io_start (EV_A_ &pipeev); |
857 | ev_unref (EV_A); /* child watcher should not keep loop alive */ |
863 | ev_unref (EV_A); /* watcher should not keep loop alive */ |
|
|
864 | } |
|
|
865 | } |
|
|
866 | |
|
|
867 | void inline_size |
|
|
868 | evpipe_write (EV_P_ EV_ATOMIC_T *flag) |
|
|
869 | { |
|
|
870 | if (!*flag) |
|
|
871 | { |
|
|
872 | int old_errno = errno; /* save errno because write might clobber it */ |
|
|
873 | |
|
|
874 | *flag = 1; |
|
|
875 | |
|
|
876 | #if EV_USE_EVENTFD |
|
|
877 | if (evfd >= 0) |
|
|
878 | { |
|
|
879 | uint64_t counter = 1; |
|
|
880 | write (evfd, &counter, sizeof (uint64_t)); |
|
|
881 | } |
|
|
882 | else |
|
|
883 | #endif |
|
|
884 | write (evpipe [1], &old_errno, 1); |
|
|
885 | |
|
|
886 | errno = old_errno; |
|
|
887 | } |
|
|
888 | } |
|
|
889 | |
|
|
890 | static void |
|
|
891 | pipecb (EV_P_ ev_io *iow, int revents) |
|
|
892 | { |
|
|
893 | #if EV_USE_EVENTFD |
|
|
894 | if (evfd >= 0) |
|
|
895 | { |
|
|
896 | uint64_t counter = 1; |
|
|
897 | read (evfd, &counter, sizeof (uint64_t)); |
|
|
898 | } |
|
|
899 | else |
|
|
900 | #endif |
|
|
901 | { |
|
|
902 | char dummy; |
|
|
903 | read (evpipe [0], &dummy, 1); |
|
|
904 | } |
|
|
905 | |
|
|
906 | if (gotsig && ev_is_default_loop (EV_A)) |
|
|
907 | { |
|
|
908 | int signum; |
|
|
909 | gotsig = 0; |
|
|
910 | |
|
|
911 | for (signum = signalmax; signum--; ) |
|
|
912 | if (signals [signum].gotsig) |
|
|
913 | ev_feed_signal_event (EV_A_ signum + 1); |
|
|
914 | } |
|
|
915 | |
|
|
916 | #if EV_ASYNC_ENABLE |
|
|
917 | if (gotasync) |
|
|
918 | { |
|
|
919 | int i; |
|
|
920 | gotasync = 0; |
|
|
921 | |
|
|
922 | for (i = asynccnt; i--; ) |
|
|
923 | if (asyncs [i]->sent) |
|
|
924 | { |
|
|
925 | asyncs [i]->sent = 0; |
|
|
926 | ev_feed_event (EV_A_ asyncs [i], EV_ASYNC); |
|
|
927 | } |
|
|
928 | } |
|
|
929 | #endif |
858 | } |
930 | } |
859 | |
931 | |
860 | /*****************************************************************************/ |
932 | /*****************************************************************************/ |
861 | |
933 | |
|
|
934 | static void |
|
|
935 | ev_sighandler (int signum) |
|
|
936 | { |
|
|
937 | #if EV_MULTIPLICITY |
|
|
938 | struct ev_loop *loop = &default_loop_struct; |
|
|
939 | #endif |
|
|
940 | |
|
|
941 | #if _WIN32 |
|
|
942 | signal (signum, ev_sighandler); |
|
|
943 | #endif |
|
|
944 | |
|
|
945 | signals [signum - 1].gotsig = 1; |
|
|
946 | evpipe_write (EV_A_ &gotsig); |
|
|
947 | } |
|
|
948 | |
|
|
949 | void noinline |
|
|
950 | ev_feed_signal_event (EV_P_ int signum) |
|
|
951 | { |
|
|
952 | WL w; |
|
|
953 | |
|
|
954 | #if EV_MULTIPLICITY |
|
|
955 | assert (("feeding signal events is only supported in the default loop", loop == ev_default_loop_ptr)); |
|
|
956 | #endif |
|
|
957 | |
|
|
958 | --signum; |
|
|
959 | |
|
|
960 | if (signum < 0 || signum >= signalmax) |
|
|
961 | return; |
|
|
962 | |
|
|
963 | signals [signum].gotsig = 0; |
|
|
964 | |
|
|
965 | for (w = signals [signum].head; w; w = w->next) |
|
|
966 | ev_feed_event (EV_A_ (W)w, EV_SIGNAL); |
|
|
967 | } |
|
|
968 | |
|
|
969 | /*****************************************************************************/ |
|
|
970 | |
862 | static WL childs [EV_PID_HASHSIZE]; |
971 | static WL childs [EV_PID_HASHSIZE]; |
863 | |
972 | |
864 | #ifndef _WIN32 |
973 | #ifndef _WIN32 |
865 | |
974 | |
866 | static ev_signal childev; |
975 | static ev_signal childev; |
867 | |
976 | |
|
|
977 | #ifndef WIFCONTINUED |
|
|
978 | # define WIFCONTINUED(status) 0 |
|
|
979 | #endif |
|
|
980 | |
868 | void inline_speed |
981 | void inline_speed |
869 | child_reap (EV_P_ ev_signal *sw, int chain, int pid, int status) |
982 | child_reap (EV_P_ int chain, int pid, int status) |
870 | { |
983 | { |
871 | ev_child *w; |
984 | ev_child *w; |
|
|
985 | int traced = WIFSTOPPED (status) || WIFCONTINUED (status); |
872 | |
986 | |
873 | for (w = (ev_child *)childs [chain & (EV_PID_HASHSIZE - 1)]; w; w = (ev_child *)((WL)w)->next) |
987 | for (w = (ev_child *)childs [chain & (EV_PID_HASHSIZE - 1)]; w; w = (ev_child *)((WL)w)->next) |
|
|
988 | { |
874 | if (w->pid == pid || !w->pid) |
989 | if ((w->pid == pid || !w->pid) |
|
|
990 | && (!traced || (w->flags & 1))) |
875 | { |
991 | { |
876 | ev_set_priority (w, ev_priority (sw)); /* need to do it *now* */ |
992 | ev_set_priority (w, EV_MAXPRI); /* need to do it *now*, this *must* be the same prio as the signal watcher itself */ |
877 | w->rpid = pid; |
993 | w->rpid = pid; |
878 | w->rstatus = status; |
994 | w->rstatus = status; |
879 | ev_feed_event (EV_A_ (W)w, EV_CHILD); |
995 | ev_feed_event (EV_A_ (W)w, EV_CHILD); |
880 | } |
996 | } |
|
|
997 | } |
881 | } |
998 | } |
882 | |
999 | |
883 | #ifndef WCONTINUED |
1000 | #ifndef WCONTINUED |
884 | # define WCONTINUED 0 |
1001 | # define WCONTINUED 0 |
885 | #endif |
1002 | #endif |
… | |
… | |
894 | if (!WCONTINUED |
1011 | if (!WCONTINUED |
895 | || errno != EINVAL |
1012 | || errno != EINVAL |
896 | || 0 >= (pid = waitpid (-1, &status, WNOHANG | WUNTRACED))) |
1013 | || 0 >= (pid = waitpid (-1, &status, WNOHANG | WUNTRACED))) |
897 | return; |
1014 | return; |
898 | |
1015 | |
899 | /* make sure we are called again until all childs have been reaped */ |
1016 | /* make sure we are called again until all children have been reaped */ |
900 | /* we need to do it this way so that the callback gets called before we continue */ |
1017 | /* we need to do it this way so that the callback gets called before we continue */ |
901 | ev_feed_event (EV_A_ (W)sw, EV_SIGNAL); |
1018 | ev_feed_event (EV_A_ (W)sw, EV_SIGNAL); |
902 | |
1019 | |
903 | child_reap (EV_A_ sw, pid, pid, status); |
1020 | child_reap (EV_A_ pid, pid, status); |
904 | if (EV_PID_HASHSIZE > 1) |
1021 | if (EV_PID_HASHSIZE > 1) |
905 | child_reap (EV_A_ sw, 0, pid, status); /* this might trigger a watcher twice, but feed_event catches that */ |
1022 | child_reap (EV_A_ 0, pid, status); /* this might trigger a watcher twice, but feed_event catches that */ |
906 | } |
1023 | } |
907 | |
1024 | |
908 | #endif |
1025 | #endif |
909 | |
1026 | |
910 | /*****************************************************************************/ |
1027 | /*****************************************************************************/ |
… | |
… | |
1028 | if (!clock_gettime (CLOCK_MONOTONIC, &ts)) |
1145 | if (!clock_gettime (CLOCK_MONOTONIC, &ts)) |
1029 | have_monotonic = 1; |
1146 | have_monotonic = 1; |
1030 | } |
1147 | } |
1031 | #endif |
1148 | #endif |
1032 | |
1149 | |
1033 | ev_rt_now = ev_time (); |
1150 | ev_rt_now = ev_time (); |
1034 | mn_now = get_clock (); |
1151 | mn_now = get_clock (); |
1035 | now_floor = mn_now; |
1152 | now_floor = mn_now; |
1036 | rtmn_diff = ev_rt_now - mn_now; |
1153 | rtmn_diff = ev_rt_now - mn_now; |
1037 | |
1154 | |
1038 | io_blocktime = 0.; |
1155 | io_blocktime = 0.; |
1039 | timeout_blocktime = 0.; |
1156 | timeout_blocktime = 0.; |
|
|
1157 | backend = 0; |
|
|
1158 | backend_fd = -1; |
|
|
1159 | gotasync = 0; |
|
|
1160 | #if EV_USE_INOTIFY |
|
|
1161 | fs_fd = -2; |
|
|
1162 | #endif |
1040 | |
1163 | |
1041 | /* pid check not overridable via env */ |
1164 | /* pid check not overridable via env */ |
1042 | #ifndef _WIN32 |
1165 | #ifndef _WIN32 |
1043 | if (flags & EVFLAG_FORKCHECK) |
1166 | if (flags & EVFLAG_FORKCHECK) |
1044 | curpid = getpid (); |
1167 | curpid = getpid (); |
… | |
… | |
1050 | flags = atoi (getenv ("LIBEV_FLAGS")); |
1173 | flags = atoi (getenv ("LIBEV_FLAGS")); |
1051 | |
1174 | |
1052 | if (!(flags & 0x0000ffffUL)) |
1175 | if (!(flags & 0x0000ffffUL)) |
1053 | flags |= ev_recommended_backends (); |
1176 | flags |= ev_recommended_backends (); |
1054 | |
1177 | |
1055 | backend = 0; |
|
|
1056 | backend_fd = -1; |
|
|
1057 | #if EV_USE_INOTIFY |
|
|
1058 | fs_fd = -2; |
|
|
1059 | #endif |
|
|
1060 | |
|
|
1061 | #if EV_USE_PORT |
1178 | #if EV_USE_PORT |
1062 | if (!backend && (flags & EVBACKEND_PORT )) backend = port_init (EV_A_ flags); |
1179 | if (!backend && (flags & EVBACKEND_PORT )) backend = port_init (EV_A_ flags); |
1063 | #endif |
1180 | #endif |
1064 | #if EV_USE_KQUEUE |
1181 | #if EV_USE_KQUEUE |
1065 | if (!backend && (flags & EVBACKEND_KQUEUE)) backend = kqueue_init (EV_A_ flags); |
1182 | if (!backend && (flags & EVBACKEND_KQUEUE)) backend = kqueue_init (EV_A_ flags); |
… | |
… | |
1072 | #endif |
1189 | #endif |
1073 | #if EV_USE_SELECT |
1190 | #if EV_USE_SELECT |
1074 | if (!backend && (flags & EVBACKEND_SELECT)) backend = select_init (EV_A_ flags); |
1191 | if (!backend && (flags & EVBACKEND_SELECT)) backend = select_init (EV_A_ flags); |
1075 | #endif |
1192 | #endif |
1076 | |
1193 | |
1077 | ev_init (&sigev, sigcb); |
1194 | ev_init (&pipeev, pipecb); |
1078 | ev_set_priority (&sigev, EV_MAXPRI); |
1195 | ev_set_priority (&pipeev, EV_MAXPRI); |
1079 | } |
1196 | } |
1080 | } |
1197 | } |
1081 | |
1198 | |
1082 | static void noinline |
1199 | static void noinline |
1083 | loop_destroy (EV_P) |
1200 | loop_destroy (EV_P) |
1084 | { |
1201 | { |
1085 | int i; |
1202 | int i; |
|
|
1203 | |
|
|
1204 | if (ev_is_active (&pipeev)) |
|
|
1205 | { |
|
|
1206 | ev_ref (EV_A); /* signal watcher */ |
|
|
1207 | ev_io_stop (EV_A_ &pipeev); |
|
|
1208 | |
|
|
1209 | #if EV_USE_EVENTFD |
|
|
1210 | if (evfd >= 0) |
|
|
1211 | close (evfd); |
|
|
1212 | #endif |
|
|
1213 | |
|
|
1214 | if (evpipe [0] >= 0) |
|
|
1215 | { |
|
|
1216 | close (evpipe [0]); |
|
|
1217 | close (evpipe [1]); |
|
|
1218 | } |
|
|
1219 | } |
1086 | |
1220 | |
1087 | #if EV_USE_INOTIFY |
1221 | #if EV_USE_INOTIFY |
1088 | if (fs_fd >= 0) |
1222 | if (fs_fd >= 0) |
1089 | close (fs_fd); |
1223 | close (fs_fd); |
1090 | #endif |
1224 | #endif |
… | |
… | |
1127 | #if EV_FORK_ENABLE |
1261 | #if EV_FORK_ENABLE |
1128 | array_free (fork, EMPTY); |
1262 | array_free (fork, EMPTY); |
1129 | #endif |
1263 | #endif |
1130 | array_free (prepare, EMPTY); |
1264 | array_free (prepare, EMPTY); |
1131 | array_free (check, EMPTY); |
1265 | array_free (check, EMPTY); |
|
|
1266 | #if EV_ASYNC_ENABLE |
|
|
1267 | array_free (async, EMPTY); |
|
|
1268 | #endif |
1132 | |
1269 | |
1133 | backend = 0; |
1270 | backend = 0; |
1134 | } |
1271 | } |
1135 | |
1272 | |
1136 | void inline_size infy_fork (EV_P); |
1273 | void inline_size infy_fork (EV_P); |
… | |
… | |
1149 | #endif |
1286 | #endif |
1150 | #if EV_USE_INOTIFY |
1287 | #if EV_USE_INOTIFY |
1151 | infy_fork (EV_A); |
1288 | infy_fork (EV_A); |
1152 | #endif |
1289 | #endif |
1153 | |
1290 | |
1154 | if (ev_is_active (&sigev)) |
1291 | if (ev_is_active (&pipeev)) |
1155 | { |
1292 | { |
1156 | /* default loop */ |
1293 | /* this "locks" the handlers against writing to the pipe */ |
|
|
1294 | /* while we modify the fd vars */ |
|
|
1295 | gotsig = 1; |
|
|
1296 | #if EV_ASYNC_ENABLE |
|
|
1297 | gotasync = 1; |
|
|
1298 | #endif |
1157 | |
1299 | |
1158 | ev_ref (EV_A); |
1300 | ev_ref (EV_A); |
1159 | ev_io_stop (EV_A_ &sigev); |
1301 | ev_io_stop (EV_A_ &pipeev); |
|
|
1302 | |
|
|
1303 | #if EV_USE_EVENTFD |
|
|
1304 | if (evfd >= 0) |
|
|
1305 | close (evfd); |
|
|
1306 | #endif |
|
|
1307 | |
|
|
1308 | if (evpipe [0] >= 0) |
|
|
1309 | { |
1160 | close (sigpipe [0]); |
1310 | close (evpipe [0]); |
1161 | close (sigpipe [1]); |
1311 | close (evpipe [1]); |
|
|
1312 | } |
1162 | |
1313 | |
1163 | while (pipe (sigpipe)) |
|
|
1164 | syserr ("(libev) error creating pipe"); |
|
|
1165 | |
|
|
1166 | siginit (EV_A); |
1314 | evpipe_init (EV_A); |
|
|
1315 | /* now iterate over everything, in case we missed something */ |
|
|
1316 | pipecb (EV_A_ &pipeev, EV_READ); |
1167 | } |
1317 | } |
1168 | |
1318 | |
1169 | postfork = 0; |
1319 | postfork = 0; |
1170 | } |
1320 | } |
1171 | |
1321 | |
… | |
… | |
1193 | } |
1343 | } |
1194 | |
1344 | |
1195 | void |
1345 | void |
1196 | ev_loop_fork (EV_P) |
1346 | ev_loop_fork (EV_P) |
1197 | { |
1347 | { |
1198 | postfork = 1; |
1348 | postfork = 1; /* must be in line with ev_default_fork */ |
1199 | } |
1349 | } |
1200 | |
1350 | |
1201 | #endif |
1351 | #endif |
1202 | |
1352 | |
1203 | #if EV_MULTIPLICITY |
1353 | #if EV_MULTIPLICITY |
… | |
… | |
1206 | #else |
1356 | #else |
1207 | int |
1357 | int |
1208 | ev_default_loop (unsigned int flags) |
1358 | ev_default_loop (unsigned int flags) |
1209 | #endif |
1359 | #endif |
1210 | { |
1360 | { |
1211 | if (sigpipe [0] == sigpipe [1]) |
|
|
1212 | if (pipe (sigpipe)) |
|
|
1213 | return 0; |
|
|
1214 | |
|
|
1215 | if (!ev_default_loop_ptr) |
1361 | if (!ev_default_loop_ptr) |
1216 | { |
1362 | { |
1217 | #if EV_MULTIPLICITY |
1363 | #if EV_MULTIPLICITY |
1218 | struct ev_loop *loop = ev_default_loop_ptr = &default_loop_struct; |
1364 | struct ev_loop *loop = ev_default_loop_ptr = &default_loop_struct; |
1219 | #else |
1365 | #else |
… | |
… | |
1222 | |
1368 | |
1223 | loop_init (EV_A_ flags); |
1369 | loop_init (EV_A_ flags); |
1224 | |
1370 | |
1225 | if (ev_backend (EV_A)) |
1371 | if (ev_backend (EV_A)) |
1226 | { |
1372 | { |
1227 | siginit (EV_A); |
|
|
1228 | |
|
|
1229 | #ifndef _WIN32 |
1373 | #ifndef _WIN32 |
1230 | ev_signal_init (&childev, childcb, SIGCHLD); |
1374 | ev_signal_init (&childev, childcb, SIGCHLD); |
1231 | ev_set_priority (&childev, EV_MAXPRI); |
1375 | ev_set_priority (&childev, EV_MAXPRI); |
1232 | ev_signal_start (EV_A_ &childev); |
1376 | ev_signal_start (EV_A_ &childev); |
1233 | ev_unref (EV_A); /* child watcher should not keep loop alive */ |
1377 | ev_unref (EV_A); /* child watcher should not keep loop alive */ |
… | |
… | |
1250 | #ifndef _WIN32 |
1394 | #ifndef _WIN32 |
1251 | ev_ref (EV_A); /* child watcher */ |
1395 | ev_ref (EV_A); /* child watcher */ |
1252 | ev_signal_stop (EV_A_ &childev); |
1396 | ev_signal_stop (EV_A_ &childev); |
1253 | #endif |
1397 | #endif |
1254 | |
1398 | |
1255 | ev_ref (EV_A); /* signal watcher */ |
|
|
1256 | ev_io_stop (EV_A_ &sigev); |
|
|
1257 | |
|
|
1258 | close (sigpipe [0]); sigpipe [0] = 0; |
|
|
1259 | close (sigpipe [1]); sigpipe [1] = 0; |
|
|
1260 | |
|
|
1261 | loop_destroy (EV_A); |
1399 | loop_destroy (EV_A); |
1262 | } |
1400 | } |
1263 | |
1401 | |
1264 | void |
1402 | void |
1265 | ev_default_fork (void) |
1403 | ev_default_fork (void) |
… | |
… | |
1267 | #if EV_MULTIPLICITY |
1405 | #if EV_MULTIPLICITY |
1268 | struct ev_loop *loop = ev_default_loop_ptr; |
1406 | struct ev_loop *loop = ev_default_loop_ptr; |
1269 | #endif |
1407 | #endif |
1270 | |
1408 | |
1271 | if (backend) |
1409 | if (backend) |
1272 | postfork = 1; |
1410 | postfork = 1; /* must be in line with ev_loop_fork */ |
1273 | } |
1411 | } |
1274 | |
1412 | |
1275 | /*****************************************************************************/ |
1413 | /*****************************************************************************/ |
1276 | |
1414 | |
1277 | void |
1415 | void |
… | |
… | |
1486 | static int loop_done; |
1624 | static int loop_done; |
1487 | |
1625 | |
1488 | void |
1626 | void |
1489 | ev_loop (EV_P_ int flags) |
1627 | ev_loop (EV_P_ int flags) |
1490 | { |
1628 | { |
1491 | loop_done = flags & (EVLOOP_ONESHOT | EVLOOP_NONBLOCK) |
1629 | loop_done = EVUNLOOP_CANCEL; |
1492 | ? EVUNLOOP_ONE |
|
|
1493 | : EVUNLOOP_CANCEL; |
|
|
1494 | |
1630 | |
1495 | call_pending (EV_A); /* in case we recurse, ensure ordering stays nice and clean */ |
1631 | call_pending (EV_A); /* in case we recurse, ensure ordering stays nice and clean */ |
1496 | |
1632 | |
1497 | do |
1633 | do |
1498 | { |
1634 | { |
… | |
… | |
1594 | /* queue check watchers, to be executed first */ |
1730 | /* queue check watchers, to be executed first */ |
1595 | if (expect_false (checkcnt)) |
1731 | if (expect_false (checkcnt)) |
1596 | queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK); |
1732 | queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK); |
1597 | |
1733 | |
1598 | call_pending (EV_A); |
1734 | call_pending (EV_A); |
1599 | |
|
|
1600 | } |
1735 | } |
1601 | while (expect_true (activecnt && !loop_done)); |
1736 | while (expect_true ( |
|
|
1737 | activecnt |
|
|
1738 | && !loop_done |
|
|
1739 | && !(flags & (EVLOOP_ONESHOT | EVLOOP_NONBLOCK)) |
|
|
1740 | )); |
1602 | |
1741 | |
1603 | if (loop_done == EVUNLOOP_ONE) |
1742 | if (loop_done == EVUNLOOP_ONE) |
1604 | loop_done = EVUNLOOP_CANCEL; |
1743 | loop_done = EVUNLOOP_CANCEL; |
1605 | } |
1744 | } |
1606 | |
1745 | |
… | |
… | |
1852 | if (expect_false (ev_is_active (w))) |
1991 | if (expect_false (ev_is_active (w))) |
1853 | return; |
1992 | return; |
1854 | |
1993 | |
1855 | assert (("ev_signal_start called with illegal signal number", w->signum > 0)); |
1994 | assert (("ev_signal_start called with illegal signal number", w->signum > 0)); |
1856 | |
1995 | |
|
|
1996 | evpipe_init (EV_A); |
|
|
1997 | |
1857 | { |
1998 | { |
1858 | #ifndef _WIN32 |
1999 | #ifndef _WIN32 |
1859 | sigset_t full, prev; |
2000 | sigset_t full, prev; |
1860 | sigfillset (&full); |
2001 | sigfillset (&full); |
1861 | sigprocmask (SIG_SETMASK, &full, &prev); |
2002 | sigprocmask (SIG_SETMASK, &full, &prev); |
… | |
… | |
1872 | wlist_add (&signals [w->signum - 1].head, (WL)w); |
2013 | wlist_add (&signals [w->signum - 1].head, (WL)w); |
1873 | |
2014 | |
1874 | if (!((WL)w)->next) |
2015 | if (!((WL)w)->next) |
1875 | { |
2016 | { |
1876 | #if _WIN32 |
2017 | #if _WIN32 |
1877 | signal (w->signum, sighandler); |
2018 | signal (w->signum, ev_sighandler); |
1878 | #else |
2019 | #else |
1879 | struct sigaction sa; |
2020 | struct sigaction sa; |
1880 | sa.sa_handler = sighandler; |
2021 | sa.sa_handler = ev_sighandler; |
1881 | sigfillset (&sa.sa_mask); |
2022 | sigfillset (&sa.sa_mask); |
1882 | sa.sa_flags = SA_RESTART; /* if restarting works we save one iteration */ |
2023 | sa.sa_flags = SA_RESTART; /* if restarting works we save one iteration */ |
1883 | sigaction (w->signum, &sa, 0); |
2024 | sigaction (w->signum, &sa, 0); |
1884 | #endif |
2025 | #endif |
1885 | } |
2026 | } |
… | |
… | |
2374 | |
2515 | |
2375 | ev_stop (EV_A_ (W)w); |
2516 | ev_stop (EV_A_ (W)w); |
2376 | } |
2517 | } |
2377 | #endif |
2518 | #endif |
2378 | |
2519 | |
|
|
2520 | #if EV_ASYNC_ENABLE |
|
|
2521 | void |
|
|
2522 | ev_async_start (EV_P_ ev_async *w) |
|
|
2523 | { |
|
|
2524 | if (expect_false (ev_is_active (w))) |
|
|
2525 | return; |
|
|
2526 | |
|
|
2527 | evpipe_init (EV_A); |
|
|
2528 | |
|
|
2529 | ev_start (EV_A_ (W)w, ++asynccnt); |
|
|
2530 | array_needsize (ev_async *, asyncs, asyncmax, asynccnt, EMPTY2); |
|
|
2531 | asyncs [asynccnt - 1] = w; |
|
|
2532 | } |
|
|
2533 | |
|
|
2534 | void |
|
|
2535 | ev_async_stop (EV_P_ ev_async *w) |
|
|
2536 | { |
|
|
2537 | clear_pending (EV_A_ (W)w); |
|
|
2538 | if (expect_false (!ev_is_active (w))) |
|
|
2539 | return; |
|
|
2540 | |
|
|
2541 | { |
|
|
2542 | int active = ((W)w)->active; |
|
|
2543 | asyncs [active - 1] = asyncs [--asynccnt]; |
|
|
2544 | ((W)asyncs [active - 1])->active = active; |
|
|
2545 | } |
|
|
2546 | |
|
|
2547 | ev_stop (EV_A_ (W)w); |
|
|
2548 | } |
|
|
2549 | |
|
|
2550 | void |
|
|
2551 | ev_async_send (EV_P_ ev_async *w) |
|
|
2552 | { |
|
|
2553 | w->sent = 1; |
|
|
2554 | evpipe_write (EV_A_ &gotasync); |
|
|
2555 | } |
|
|
2556 | #endif |
|
|
2557 | |
2379 | /*****************************************************************************/ |
2558 | /*****************************************************************************/ |
2380 | |
2559 | |
2381 | struct ev_once |
2560 | struct ev_once |
2382 | { |
2561 | { |
2383 | ev_io io; |
2562 | ev_io io; |