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 | int eventfd (unsigned int initval, int flags); |
244 | #endif |
275 | #endif |
245 | |
276 | |
246 | /**/ |
277 | /**/ |
247 | |
278 | |
248 | /* |
279 | /* |
… | |
… | |
291 | typedef ev_watcher_time *WT; |
322 | typedef ev_watcher_time *WT; |
292 | |
323 | |
293 | #if EV_USE_MONOTONIC |
324 | #if EV_USE_MONOTONIC |
294 | /* sig_atomic_t is used to avoid per-thread variables or locking but still */ |
325 | /* 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 */ |
326 | /* giving it a reasonably high chance of working on typical architetcures */ |
296 | static sig_atomic_t have_monotonic; /* did clock_gettime (CLOCK_MONOTONIC) work? */ |
327 | static EV_ATOMIC_T have_monotonic; /* did clock_gettime (CLOCK_MONOTONIC) work? */ |
297 | #endif |
328 | #endif |
298 | |
329 | |
299 | #ifdef _WIN32 |
330 | #ifdef _WIN32 |
300 | # include "ev_win32.c" |
331 | # include "ev_win32.c" |
301 | #endif |
332 | #endif |
… | |
… | |
451 | ts.tv_sec = (time_t)delay; |
482 | ts.tv_sec = (time_t)delay; |
452 | ts.tv_nsec = (long)((delay - (ev_tstamp)(ts.tv_sec)) * 1e9); |
483 | ts.tv_nsec = (long)((delay - (ev_tstamp)(ts.tv_sec)) * 1e9); |
453 | |
484 | |
454 | nanosleep (&ts, 0); |
485 | nanosleep (&ts, 0); |
455 | #elif defined(_WIN32) |
486 | #elif defined(_WIN32) |
456 | Sleep (delay * 1e3); |
487 | Sleep ((unsigned long)(delay * 1e3)); |
457 | #else |
488 | #else |
458 | struct timeval tv; |
489 | struct timeval tv; |
459 | |
490 | |
460 | tv.tv_sec = (time_t)delay; |
491 | tv.tv_sec = (time_t)delay; |
461 | tv.tv_usec = (long)((delay - (ev_tstamp)(tv.tv_sec)) * 1e6); |
492 | tv.tv_usec = (long)((delay - (ev_tstamp)(tv.tv_sec)) * 1e6); |
… | |
… | |
763 | /*****************************************************************************/ |
794 | /*****************************************************************************/ |
764 | |
795 | |
765 | typedef struct |
796 | typedef struct |
766 | { |
797 | { |
767 | WL head; |
798 | WL head; |
768 | sig_atomic_t volatile gotsig; |
799 | EV_ATOMIC_T gotsig; |
769 | } ANSIG; |
800 | } ANSIG; |
770 | |
801 | |
771 | static ANSIG *signals; |
802 | static ANSIG *signals; |
772 | static int signalmax; |
803 | static int signalmax; |
773 | |
804 | |
774 | static int sigpipe [2]; |
805 | static EV_ATOMIC_T gotsig; |
775 | static sig_atomic_t volatile gotsig; |
|
|
776 | static ev_io sigev; |
|
|
777 | |
806 | |
778 | void inline_size |
807 | void inline_size |
779 | signals_init (ANSIG *base, int count) |
808 | signals_init (ANSIG *base, int count) |
780 | { |
809 | { |
781 | while (count--) |
810 | while (count--) |
… | |
… | |
785 | |
814 | |
786 | ++base; |
815 | ++base; |
787 | } |
816 | } |
788 | } |
817 | } |
789 | |
818 | |
790 | static void |
819 | /*****************************************************************************/ |
791 | sighandler (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 | |
|
|
808 | void noinline |
|
|
809 | ev_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 | |
|
|
828 | static void |
|
|
829 | sigcb (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 | |
820 | |
841 | void inline_speed |
821 | void inline_speed |
842 | fd_intern (int fd) |
822 | fd_intern (int fd) |
843 | { |
823 | { |
844 | #ifdef _WIN32 |
824 | #ifdef _WIN32 |
… | |
… | |
849 | fcntl (fd, F_SETFL, O_NONBLOCK); |
829 | fcntl (fd, F_SETFL, O_NONBLOCK); |
850 | #endif |
830 | #endif |
851 | } |
831 | } |
852 | |
832 | |
853 | static void noinline |
833 | static void noinline |
854 | siginit (EV_P) |
834 | evpipe_init (EV_P) |
855 | { |
835 | { |
|
|
836 | if (!ev_is_active (&pipeev)) |
|
|
837 | { |
|
|
838 | #if EV_USE_EVENTFD |
|
|
839 | if ((evfd = eventfd (0, 0)) >= 0) |
|
|
840 | { |
|
|
841 | evpipe [0] = -1; |
|
|
842 | fd_intern (evfd); |
|
|
843 | ev_io_set (&pipeev, evfd, EV_READ); |
|
|
844 | } |
|
|
845 | else |
|
|
846 | #endif |
|
|
847 | { |
|
|
848 | while (pipe (evpipe)) |
|
|
849 | syserr ("(libev) error creating signal/async pipe"); |
|
|
850 | |
856 | fd_intern (sigpipe [0]); |
851 | fd_intern (evpipe [0]); |
857 | fd_intern (sigpipe [1]); |
852 | fd_intern (evpipe [1]); |
|
|
853 | ev_io_set (&pipeev, evpipe [0], EV_READ); |
|
|
854 | } |
858 | |
855 | |
859 | ev_io_set (&sigev, sigpipe [0], EV_READ); |
|
|
860 | ev_io_start (EV_A_ &sigev); |
856 | ev_io_start (EV_A_ &pipeev); |
861 | ev_unref (EV_A); /* child watcher should not keep loop alive */ |
857 | ev_unref (EV_A); /* watcher should not keep loop alive */ |
|
|
858 | } |
|
|
859 | } |
|
|
860 | |
|
|
861 | void inline_size |
|
|
862 | evpipe_write (EV_P_ EV_ATOMIC_T *flag) |
|
|
863 | { |
|
|
864 | if (!*flag) |
|
|
865 | { |
|
|
866 | int old_errno = errno; /* save errno because write might clobber it */ |
|
|
867 | |
|
|
868 | *flag = 1; |
|
|
869 | |
|
|
870 | #if EV_USE_EVENTFD |
|
|
871 | if (evfd >= 0) |
|
|
872 | { |
|
|
873 | uint64_t counter = 1; |
|
|
874 | write (evfd, &counter, sizeof (uint64_t)); |
|
|
875 | } |
|
|
876 | else |
|
|
877 | #endif |
|
|
878 | write (evpipe [1], &old_errno, 1); |
|
|
879 | |
|
|
880 | errno = old_errno; |
|
|
881 | } |
|
|
882 | } |
|
|
883 | |
|
|
884 | static void |
|
|
885 | pipecb (EV_P_ ev_io *iow, int revents) |
|
|
886 | { |
|
|
887 | #if EV_USE_EVENTFD |
|
|
888 | if (evfd >= 0) |
|
|
889 | { |
|
|
890 | uint64_t counter = 1; |
|
|
891 | read (evfd, &counter, sizeof (uint64_t)); |
|
|
892 | } |
|
|
893 | else |
|
|
894 | #endif |
|
|
895 | { |
|
|
896 | char dummy; |
|
|
897 | read (evpipe [0], &dummy, 1); |
|
|
898 | } |
|
|
899 | |
|
|
900 | if (gotsig && ev_is_default_loop (EV_A)) |
|
|
901 | { |
|
|
902 | int signum; |
|
|
903 | gotsig = 0; |
|
|
904 | |
|
|
905 | for (signum = signalmax; signum--; ) |
|
|
906 | if (signals [signum].gotsig) |
|
|
907 | ev_feed_signal_event (EV_A_ signum + 1); |
|
|
908 | } |
|
|
909 | |
|
|
910 | #if EV_ASYNC_ENABLE |
|
|
911 | if (gotasync) |
|
|
912 | { |
|
|
913 | int i; |
|
|
914 | gotasync = 0; |
|
|
915 | |
|
|
916 | for (i = asynccnt; i--; ) |
|
|
917 | if (asyncs [i]->sent) |
|
|
918 | { |
|
|
919 | asyncs [i]->sent = 0; |
|
|
920 | ev_feed_event (EV_A_ asyncs [i], EV_ASYNC); |
|
|
921 | } |
|
|
922 | } |
|
|
923 | #endif |
862 | } |
924 | } |
863 | |
925 | |
864 | /*****************************************************************************/ |
926 | /*****************************************************************************/ |
865 | |
927 | |
|
|
928 | static void |
|
|
929 | ev_sighandler (int signum) |
|
|
930 | { |
|
|
931 | #if EV_MULTIPLICITY |
|
|
932 | struct ev_loop *loop = &default_loop_struct; |
|
|
933 | #endif |
|
|
934 | |
|
|
935 | #if _WIN32 |
|
|
936 | signal (signum, ev_sighandler); |
|
|
937 | #endif |
|
|
938 | |
|
|
939 | signals [signum - 1].gotsig = 1; |
|
|
940 | evpipe_write (EV_A_ &gotsig); |
|
|
941 | } |
|
|
942 | |
|
|
943 | void noinline |
|
|
944 | ev_feed_signal_event (EV_P_ int signum) |
|
|
945 | { |
|
|
946 | WL w; |
|
|
947 | |
|
|
948 | #if EV_MULTIPLICITY |
|
|
949 | assert (("feeding signal events is only supported in the default loop", loop == ev_default_loop_ptr)); |
|
|
950 | #endif |
|
|
951 | |
|
|
952 | --signum; |
|
|
953 | |
|
|
954 | if (signum < 0 || signum >= signalmax) |
|
|
955 | return; |
|
|
956 | |
|
|
957 | signals [signum].gotsig = 0; |
|
|
958 | |
|
|
959 | for (w = signals [signum].head; w; w = w->next) |
|
|
960 | ev_feed_event (EV_A_ (W)w, EV_SIGNAL); |
|
|
961 | } |
|
|
962 | |
|
|
963 | /*****************************************************************************/ |
|
|
964 | |
866 | static WL childs [EV_PID_HASHSIZE]; |
965 | static WL childs [EV_PID_HASHSIZE]; |
867 | |
966 | |
868 | #ifndef _WIN32 |
967 | #ifndef _WIN32 |
869 | |
968 | |
870 | static ev_signal childev; |
969 | static ev_signal childev; |
871 | |
970 | |
|
|
971 | #ifndef WIFCONTINUED |
|
|
972 | # define WIFCONTINUED(status) 0 |
|
|
973 | #endif |
|
|
974 | |
872 | void inline_speed |
975 | void inline_speed |
873 | child_reap (EV_P_ ev_signal *sw, int chain, int pid, int status) |
976 | child_reap (EV_P_ int chain, int pid, int status) |
874 | { |
977 | { |
875 | ev_child *w; |
978 | ev_child *w; |
|
|
979 | int traced = WIFSTOPPED (status) || WIFCONTINUED (status); |
876 | |
980 | |
877 | for (w = (ev_child *)childs [chain & (EV_PID_HASHSIZE - 1)]; w; w = (ev_child *)((WL)w)->next) |
981 | for (w = (ev_child *)childs [chain & (EV_PID_HASHSIZE - 1)]; w; w = (ev_child *)((WL)w)->next) |
|
|
982 | { |
878 | if (w->pid == pid || !w->pid) |
983 | if ((w->pid == pid || !w->pid) |
|
|
984 | && (!traced || (w->flags & 1))) |
879 | { |
985 | { |
880 | ev_set_priority (w, ev_priority (sw)); /* need to do it *now* */ |
986 | 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; |
987 | w->rpid = pid; |
882 | w->rstatus = status; |
988 | w->rstatus = status; |
883 | ev_feed_event (EV_A_ (W)w, EV_CHILD); |
989 | ev_feed_event (EV_A_ (W)w, EV_CHILD); |
884 | } |
990 | } |
|
|
991 | } |
885 | } |
992 | } |
886 | |
993 | |
887 | #ifndef WCONTINUED |
994 | #ifndef WCONTINUED |
888 | # define WCONTINUED 0 |
995 | # define WCONTINUED 0 |
889 | #endif |
996 | #endif |
… | |
… | |
898 | if (!WCONTINUED |
1005 | if (!WCONTINUED |
899 | || errno != EINVAL |
1006 | || errno != EINVAL |
900 | || 0 >= (pid = waitpid (-1, &status, WNOHANG | WUNTRACED))) |
1007 | || 0 >= (pid = waitpid (-1, &status, WNOHANG | WUNTRACED))) |
901 | return; |
1008 | return; |
902 | |
1009 | |
903 | /* make sure we are called again until all childs have been reaped */ |
1010 | /* 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 */ |
1011 | /* 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); |
1012 | ev_feed_event (EV_A_ (W)sw, EV_SIGNAL); |
906 | |
1013 | |
907 | child_reap (EV_A_ sw, pid, pid, status); |
1014 | child_reap (EV_A_ pid, pid, status); |
908 | if (EV_PID_HASHSIZE > 1) |
1015 | 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 */ |
1016 | child_reap (EV_A_ 0, pid, status); /* this might trigger a watcher twice, but feed_event catches that */ |
910 | } |
1017 | } |
911 | |
1018 | |
912 | #endif |
1019 | #endif |
913 | |
1020 | |
914 | /*****************************************************************************/ |
1021 | /*****************************************************************************/ |
… | |
… | |
1032 | if (!clock_gettime (CLOCK_MONOTONIC, &ts)) |
1139 | if (!clock_gettime (CLOCK_MONOTONIC, &ts)) |
1033 | have_monotonic = 1; |
1140 | have_monotonic = 1; |
1034 | } |
1141 | } |
1035 | #endif |
1142 | #endif |
1036 | |
1143 | |
1037 | ev_rt_now = ev_time (); |
1144 | ev_rt_now = ev_time (); |
1038 | mn_now = get_clock (); |
1145 | mn_now = get_clock (); |
1039 | now_floor = mn_now; |
1146 | now_floor = mn_now; |
1040 | rtmn_diff = ev_rt_now - mn_now; |
1147 | rtmn_diff = ev_rt_now - mn_now; |
1041 | |
1148 | |
1042 | io_blocktime = 0.; |
1149 | io_blocktime = 0.; |
1043 | timeout_blocktime = 0.; |
1150 | timeout_blocktime = 0.; |
|
|
1151 | backend = 0; |
|
|
1152 | backend_fd = -1; |
|
|
1153 | gotasync = 0; |
|
|
1154 | #if EV_USE_INOTIFY |
|
|
1155 | fs_fd = -2; |
|
|
1156 | #endif |
1044 | |
1157 | |
1045 | /* pid check not overridable via env */ |
1158 | /* pid check not overridable via env */ |
1046 | #ifndef _WIN32 |
1159 | #ifndef _WIN32 |
1047 | if (flags & EVFLAG_FORKCHECK) |
1160 | if (flags & EVFLAG_FORKCHECK) |
1048 | curpid = getpid (); |
1161 | curpid = getpid (); |
… | |
… | |
1054 | flags = atoi (getenv ("LIBEV_FLAGS")); |
1167 | flags = atoi (getenv ("LIBEV_FLAGS")); |
1055 | |
1168 | |
1056 | if (!(flags & 0x0000ffffUL)) |
1169 | if (!(flags & 0x0000ffffUL)) |
1057 | flags |= ev_recommended_backends (); |
1170 | flags |= ev_recommended_backends (); |
1058 | |
1171 | |
1059 | backend = 0; |
|
|
1060 | backend_fd = -1; |
|
|
1061 | #if EV_USE_INOTIFY |
|
|
1062 | fs_fd = -2; |
|
|
1063 | #endif |
|
|
1064 | |
|
|
1065 | #if EV_USE_PORT |
1172 | #if EV_USE_PORT |
1066 | if (!backend && (flags & EVBACKEND_PORT )) backend = port_init (EV_A_ flags); |
1173 | if (!backend && (flags & EVBACKEND_PORT )) backend = port_init (EV_A_ flags); |
1067 | #endif |
1174 | #endif |
1068 | #if EV_USE_KQUEUE |
1175 | #if EV_USE_KQUEUE |
1069 | if (!backend && (flags & EVBACKEND_KQUEUE)) backend = kqueue_init (EV_A_ flags); |
1176 | if (!backend && (flags & EVBACKEND_KQUEUE)) backend = kqueue_init (EV_A_ flags); |
… | |
… | |
1076 | #endif |
1183 | #endif |
1077 | #if EV_USE_SELECT |
1184 | #if EV_USE_SELECT |
1078 | if (!backend && (flags & EVBACKEND_SELECT)) backend = select_init (EV_A_ flags); |
1185 | if (!backend && (flags & EVBACKEND_SELECT)) backend = select_init (EV_A_ flags); |
1079 | #endif |
1186 | #endif |
1080 | |
1187 | |
1081 | ev_init (&sigev, sigcb); |
1188 | ev_init (&pipeev, pipecb); |
1082 | ev_set_priority (&sigev, EV_MAXPRI); |
1189 | ev_set_priority (&pipeev, EV_MAXPRI); |
1083 | } |
1190 | } |
1084 | } |
1191 | } |
1085 | |
1192 | |
1086 | static void noinline |
1193 | static void noinline |
1087 | loop_destroy (EV_P) |
1194 | loop_destroy (EV_P) |
1088 | { |
1195 | { |
1089 | int i; |
1196 | int i; |
|
|
1197 | |
|
|
1198 | if (ev_is_active (&pipeev)) |
|
|
1199 | { |
|
|
1200 | ev_ref (EV_A); /* signal watcher */ |
|
|
1201 | ev_io_stop (EV_A_ &pipeev); |
|
|
1202 | |
|
|
1203 | #if EV_USE_EVENTFD |
|
|
1204 | if (evfd >= 0) |
|
|
1205 | close (evfd); |
|
|
1206 | #endif |
|
|
1207 | |
|
|
1208 | if (evpipe [0] >= 0) |
|
|
1209 | { |
|
|
1210 | close (evpipe [0]); |
|
|
1211 | close (evpipe [1]); |
|
|
1212 | } |
|
|
1213 | } |
1090 | |
1214 | |
1091 | #if EV_USE_INOTIFY |
1215 | #if EV_USE_INOTIFY |
1092 | if (fs_fd >= 0) |
1216 | if (fs_fd >= 0) |
1093 | close (fs_fd); |
1217 | close (fs_fd); |
1094 | #endif |
1218 | #endif |
… | |
… | |
1131 | #if EV_FORK_ENABLE |
1255 | #if EV_FORK_ENABLE |
1132 | array_free (fork, EMPTY); |
1256 | array_free (fork, EMPTY); |
1133 | #endif |
1257 | #endif |
1134 | array_free (prepare, EMPTY); |
1258 | array_free (prepare, EMPTY); |
1135 | array_free (check, EMPTY); |
1259 | array_free (check, EMPTY); |
|
|
1260 | #if EV_ASYNC_ENABLE |
|
|
1261 | array_free (async, EMPTY); |
|
|
1262 | #endif |
1136 | |
1263 | |
1137 | backend = 0; |
1264 | backend = 0; |
1138 | } |
1265 | } |
1139 | |
1266 | |
1140 | void inline_size infy_fork (EV_P); |
1267 | void inline_size infy_fork (EV_P); |
… | |
… | |
1153 | #endif |
1280 | #endif |
1154 | #if EV_USE_INOTIFY |
1281 | #if EV_USE_INOTIFY |
1155 | infy_fork (EV_A); |
1282 | infy_fork (EV_A); |
1156 | #endif |
1283 | #endif |
1157 | |
1284 | |
1158 | if (ev_is_active (&sigev)) |
1285 | if (ev_is_active (&pipeev)) |
1159 | { |
1286 | { |
1160 | /* default loop */ |
1287 | /* this "locks" the handlers against writing to the pipe */ |
|
|
1288 | /* while we modify the fd vars */ |
|
|
1289 | gotsig = 1; |
|
|
1290 | #if EV_ASYNC_ENABLE |
|
|
1291 | gotasync = 1; |
|
|
1292 | #endif |
1161 | |
1293 | |
1162 | ev_ref (EV_A); |
1294 | ev_ref (EV_A); |
1163 | ev_io_stop (EV_A_ &sigev); |
1295 | ev_io_stop (EV_A_ &pipeev); |
|
|
1296 | |
|
|
1297 | #if EV_USE_EVENTFD |
|
|
1298 | if (evfd >= 0) |
|
|
1299 | close (evfd); |
|
|
1300 | #endif |
|
|
1301 | |
|
|
1302 | if (evpipe [0] >= 0) |
|
|
1303 | { |
1164 | close (sigpipe [0]); |
1304 | close (evpipe [0]); |
1165 | close (sigpipe [1]); |
1305 | close (evpipe [1]); |
|
|
1306 | } |
1166 | |
1307 | |
1167 | while (pipe (sigpipe)) |
|
|
1168 | syserr ("(libev) error creating pipe"); |
|
|
1169 | |
|
|
1170 | siginit (EV_A); |
1308 | evpipe_init (EV_A); |
|
|
1309 | /* now iterate over everything, in case we missed something */ |
|
|
1310 | pipecb (EV_A_ &pipeev, EV_READ); |
1171 | } |
1311 | } |
1172 | |
1312 | |
1173 | postfork = 0; |
1313 | postfork = 0; |
1174 | } |
1314 | } |
1175 | |
1315 | |
… | |
… | |
1197 | } |
1337 | } |
1198 | |
1338 | |
1199 | void |
1339 | void |
1200 | ev_loop_fork (EV_P) |
1340 | ev_loop_fork (EV_P) |
1201 | { |
1341 | { |
1202 | postfork = 1; |
1342 | postfork = 1; /* must be in line with ev_default_fork */ |
1203 | } |
1343 | } |
1204 | |
1344 | |
1205 | #endif |
1345 | #endif |
1206 | |
1346 | |
1207 | #if EV_MULTIPLICITY |
1347 | #if EV_MULTIPLICITY |
… | |
… | |
1210 | #else |
1350 | #else |
1211 | int |
1351 | int |
1212 | ev_default_loop (unsigned int flags) |
1352 | ev_default_loop (unsigned int flags) |
1213 | #endif |
1353 | #endif |
1214 | { |
1354 | { |
1215 | if (sigpipe [0] == sigpipe [1]) |
|
|
1216 | if (pipe (sigpipe)) |
|
|
1217 | return 0; |
|
|
1218 | |
|
|
1219 | if (!ev_default_loop_ptr) |
1355 | if (!ev_default_loop_ptr) |
1220 | { |
1356 | { |
1221 | #if EV_MULTIPLICITY |
1357 | #if EV_MULTIPLICITY |
1222 | struct ev_loop *loop = ev_default_loop_ptr = &default_loop_struct; |
1358 | struct ev_loop *loop = ev_default_loop_ptr = &default_loop_struct; |
1223 | #else |
1359 | #else |
… | |
… | |
1226 | |
1362 | |
1227 | loop_init (EV_A_ flags); |
1363 | loop_init (EV_A_ flags); |
1228 | |
1364 | |
1229 | if (ev_backend (EV_A)) |
1365 | if (ev_backend (EV_A)) |
1230 | { |
1366 | { |
1231 | siginit (EV_A); |
|
|
1232 | |
|
|
1233 | #ifndef _WIN32 |
1367 | #ifndef _WIN32 |
1234 | ev_signal_init (&childev, childcb, SIGCHLD); |
1368 | ev_signal_init (&childev, childcb, SIGCHLD); |
1235 | ev_set_priority (&childev, EV_MAXPRI); |
1369 | ev_set_priority (&childev, EV_MAXPRI); |
1236 | ev_signal_start (EV_A_ &childev); |
1370 | ev_signal_start (EV_A_ &childev); |
1237 | ev_unref (EV_A); /* child watcher should not keep loop alive */ |
1371 | ev_unref (EV_A); /* child watcher should not keep loop alive */ |
… | |
… | |
1254 | #ifndef _WIN32 |
1388 | #ifndef _WIN32 |
1255 | ev_ref (EV_A); /* child watcher */ |
1389 | ev_ref (EV_A); /* child watcher */ |
1256 | ev_signal_stop (EV_A_ &childev); |
1390 | ev_signal_stop (EV_A_ &childev); |
1257 | #endif |
1391 | #endif |
1258 | |
1392 | |
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); |
1393 | loop_destroy (EV_A); |
1266 | } |
1394 | } |
1267 | |
1395 | |
1268 | void |
1396 | void |
1269 | ev_default_fork (void) |
1397 | ev_default_fork (void) |
… | |
… | |
1271 | #if EV_MULTIPLICITY |
1399 | #if EV_MULTIPLICITY |
1272 | struct ev_loop *loop = ev_default_loop_ptr; |
1400 | struct ev_loop *loop = ev_default_loop_ptr; |
1273 | #endif |
1401 | #endif |
1274 | |
1402 | |
1275 | if (backend) |
1403 | if (backend) |
1276 | postfork = 1; |
1404 | postfork = 1; /* must be in line with ev_loop_fork */ |
1277 | } |
1405 | } |
1278 | |
1406 | |
1279 | /*****************************************************************************/ |
1407 | /*****************************************************************************/ |
1280 | |
1408 | |
1281 | void |
1409 | void |
… | |
… | |
1309 | { |
1437 | { |
1310 | while (timercnt && ((WT)timers [0])->at <= mn_now) |
1438 | while (timercnt && ((WT)timers [0])->at <= mn_now) |
1311 | { |
1439 | { |
1312 | ev_timer *w = (ev_timer *)timers [0]; |
1440 | ev_timer *w = (ev_timer *)timers [0]; |
1313 | |
1441 | |
1314 | assert (("inactive timer on timer heap detected", ev_is_active (w))); |
1442 | /*assert (("inactive timer on timer heap detected", ev_is_active (w)));*/ |
1315 | |
1443 | |
1316 | /* first reschedule or stop timer */ |
1444 | /* first reschedule or stop timer */ |
1317 | if (w->repeat) |
1445 | if (w->repeat) |
1318 | { |
1446 | { |
1319 | assert (("negative ev_timer repeat value found while processing timers", w->repeat > 0.)); |
1447 | assert (("negative ev_timer repeat value found while processing timers", w->repeat > 0.)); |
… | |
… | |
1490 | static int loop_done; |
1618 | static int loop_done; |
1491 | |
1619 | |
1492 | void |
1620 | void |
1493 | ev_loop (EV_P_ int flags) |
1621 | ev_loop (EV_P_ int flags) |
1494 | { |
1622 | { |
1495 | loop_done = flags & (EVLOOP_ONESHOT | EVLOOP_NONBLOCK) |
1623 | loop_done = EVUNLOOP_CANCEL; |
1496 | ? EVUNLOOP_ONE |
|
|
1497 | : EVUNLOOP_CANCEL; |
|
|
1498 | |
1624 | |
1499 | call_pending (EV_A); /* in case we recurse, ensure ordering stays nice and clean */ |
1625 | call_pending (EV_A); /* in case we recurse, ensure ordering stays nice and clean */ |
1500 | |
1626 | |
1501 | do |
1627 | do |
1502 | { |
1628 | { |
… | |
… | |
1598 | /* queue check watchers, to be executed first */ |
1724 | /* queue check watchers, to be executed first */ |
1599 | if (expect_false (checkcnt)) |
1725 | if (expect_false (checkcnt)) |
1600 | queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK); |
1726 | queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK); |
1601 | |
1727 | |
1602 | call_pending (EV_A); |
1728 | call_pending (EV_A); |
1603 | |
|
|
1604 | } |
1729 | } |
1605 | while (expect_true (activecnt && !loop_done)); |
1730 | while (expect_true ( |
|
|
1731 | activecnt |
|
|
1732 | && !loop_done |
|
|
1733 | && !(flags & (EVLOOP_ONESHOT | EVLOOP_NONBLOCK)) |
|
|
1734 | )); |
1606 | |
1735 | |
1607 | if (loop_done == EVUNLOOP_ONE) |
1736 | if (loop_done == EVUNLOOP_ONE) |
1608 | loop_done = EVUNLOOP_CANCEL; |
1737 | loop_done = EVUNLOOP_CANCEL; |
1609 | } |
1738 | } |
1610 | |
1739 | |
… | |
… | |
1856 | if (expect_false (ev_is_active (w))) |
1985 | if (expect_false (ev_is_active (w))) |
1857 | return; |
1986 | return; |
1858 | |
1987 | |
1859 | assert (("ev_signal_start called with illegal signal number", w->signum > 0)); |
1988 | assert (("ev_signal_start called with illegal signal number", w->signum > 0)); |
1860 | |
1989 | |
|
|
1990 | evpipe_init (EV_A); |
|
|
1991 | |
1861 | { |
1992 | { |
1862 | #ifndef _WIN32 |
1993 | #ifndef _WIN32 |
1863 | sigset_t full, prev; |
1994 | sigset_t full, prev; |
1864 | sigfillset (&full); |
1995 | sigfillset (&full); |
1865 | sigprocmask (SIG_SETMASK, &full, &prev); |
1996 | sigprocmask (SIG_SETMASK, &full, &prev); |
… | |
… | |
1876 | wlist_add (&signals [w->signum - 1].head, (WL)w); |
2007 | wlist_add (&signals [w->signum - 1].head, (WL)w); |
1877 | |
2008 | |
1878 | if (!((WL)w)->next) |
2009 | if (!((WL)w)->next) |
1879 | { |
2010 | { |
1880 | #if _WIN32 |
2011 | #if _WIN32 |
1881 | signal (w->signum, sighandler); |
2012 | signal (w->signum, ev_sighandler); |
1882 | #else |
2013 | #else |
1883 | struct sigaction sa; |
2014 | struct sigaction sa; |
1884 | sa.sa_handler = sighandler; |
2015 | sa.sa_handler = ev_sighandler; |
1885 | sigfillset (&sa.sa_mask); |
2016 | sigfillset (&sa.sa_mask); |
1886 | sa.sa_flags = SA_RESTART; /* if restarting works we save one iteration */ |
2017 | sa.sa_flags = SA_RESTART; /* if restarting works we save one iteration */ |
1887 | sigaction (w->signum, &sa, 0); |
2018 | sigaction (w->signum, &sa, 0); |
1888 | #endif |
2019 | #endif |
1889 | } |
2020 | } |
… | |
… | |
2378 | |
2509 | |
2379 | ev_stop (EV_A_ (W)w); |
2510 | ev_stop (EV_A_ (W)w); |
2380 | } |
2511 | } |
2381 | #endif |
2512 | #endif |
2382 | |
2513 | |
|
|
2514 | #if EV_ASYNC_ENABLE |
|
|
2515 | void |
|
|
2516 | ev_async_start (EV_P_ ev_async *w) |
|
|
2517 | { |
|
|
2518 | if (expect_false (ev_is_active (w))) |
|
|
2519 | return; |
|
|
2520 | |
|
|
2521 | evpipe_init (EV_A); |
|
|
2522 | |
|
|
2523 | ev_start (EV_A_ (W)w, ++asynccnt); |
|
|
2524 | array_needsize (ev_async *, asyncs, asyncmax, asynccnt, EMPTY2); |
|
|
2525 | asyncs [asynccnt - 1] = w; |
|
|
2526 | } |
|
|
2527 | |
|
|
2528 | void |
|
|
2529 | ev_async_stop (EV_P_ ev_async *w) |
|
|
2530 | { |
|
|
2531 | clear_pending (EV_A_ (W)w); |
|
|
2532 | if (expect_false (!ev_is_active (w))) |
|
|
2533 | return; |
|
|
2534 | |
|
|
2535 | { |
|
|
2536 | int active = ((W)w)->active; |
|
|
2537 | asyncs [active - 1] = asyncs [--asynccnt]; |
|
|
2538 | ((W)asyncs [active - 1])->active = active; |
|
|
2539 | } |
|
|
2540 | |
|
|
2541 | ev_stop (EV_A_ (W)w); |
|
|
2542 | } |
|
|
2543 | |
|
|
2544 | void |
|
|
2545 | ev_async_send (EV_P_ ev_async *w) |
|
|
2546 | { |
|
|
2547 | w->sent = 1; |
|
|
2548 | evpipe_write (EV_A_ &gotasync); |
|
|
2549 | } |
|
|
2550 | #endif |
|
|
2551 | |
2383 | /*****************************************************************************/ |
2552 | /*****************************************************************************/ |
2384 | |
2553 | |
2385 | struct ev_once |
2554 | struct ev_once |
2386 | { |
2555 | { |
2387 | ev_io io; |
2556 | ev_io io; |