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 | /* |
… | |
… | |
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) |
… | |
… | |
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 |
… | |
… | |
323 | perror (msg); |
360 | perror (msg); |
324 | abort (); |
361 | abort (); |
325 | } |
362 | } |
326 | } |
363 | } |
327 | |
364 | |
|
|
365 | static void * |
|
|
366 | ev_realloc_emul (void *ptr, long size) |
|
|
367 | { |
|
|
368 | /* some systems, notably openbsd and darwin, fail to properly |
|
|
369 | * implement realloc (x, 0) (as required by both ansi c-98 and |
|
|
370 | * the single unix specification, so work around them here. |
|
|
371 | */ |
|
|
372 | |
|
|
373 | if (size) |
|
|
374 | return realloc (ptr, size); |
|
|
375 | |
|
|
376 | free (ptr); |
|
|
377 | return 0; |
|
|
378 | } |
|
|
379 | |
328 | static void *(*alloc)(void *ptr, long size); |
380 | static void *(*alloc)(void *ptr, long size) = ev_realloc_emul; |
329 | |
381 | |
330 | void |
382 | void |
331 | ev_set_allocator (void *(*cb)(void *ptr, long size)) |
383 | ev_set_allocator (void *(*cb)(void *ptr, long size)) |
332 | { |
384 | { |
333 | alloc = cb; |
385 | alloc = cb; |
334 | } |
386 | } |
335 | |
387 | |
336 | inline_speed void * |
388 | inline_speed void * |
337 | ev_realloc (void *ptr, long size) |
389 | ev_realloc (void *ptr, long size) |
338 | { |
390 | { |
339 | ptr = alloc ? alloc (ptr, size) : realloc (ptr, size); |
391 | ptr = alloc (ptr, size); |
340 | |
392 | |
341 | if (!ptr && size) |
393 | if (!ptr && size) |
342 | { |
394 | { |
343 | fprintf (stderr, "libev: cannot allocate %ld bytes, aborting.", size); |
395 | fprintf (stderr, "libev: cannot allocate %ld bytes, aborting.", size); |
344 | abort (); |
396 | abort (); |
… | |
… | |
451 | ts.tv_sec = (time_t)delay; |
503 | ts.tv_sec = (time_t)delay; |
452 | ts.tv_nsec = (long)((delay - (ev_tstamp)(ts.tv_sec)) * 1e9); |
504 | ts.tv_nsec = (long)((delay - (ev_tstamp)(ts.tv_sec)) * 1e9); |
453 | |
505 | |
454 | nanosleep (&ts, 0); |
506 | nanosleep (&ts, 0); |
455 | #elif defined(_WIN32) |
507 | #elif defined(_WIN32) |
456 | Sleep (delay * 1e3); |
508 | Sleep ((unsigned long)(delay * 1e3)); |
457 | #else |
509 | #else |
458 | struct timeval tv; |
510 | struct timeval tv; |
459 | |
511 | |
460 | tv.tv_sec = (time_t)delay; |
512 | tv.tv_sec = (time_t)delay; |
461 | tv.tv_usec = (long)((delay - (ev_tstamp)(tv.tv_sec)) * 1e6); |
513 | tv.tv_usec = (long)((delay - (ev_tstamp)(tv.tv_sec)) * 1e6); |
… | |
… | |
763 | /*****************************************************************************/ |
815 | /*****************************************************************************/ |
764 | |
816 | |
765 | typedef struct |
817 | typedef struct |
766 | { |
818 | { |
767 | WL head; |
819 | WL head; |
768 | sig_atomic_t volatile gotsig; |
820 | EV_ATOMIC_T gotsig; |
769 | } ANSIG; |
821 | } ANSIG; |
770 | |
822 | |
771 | static ANSIG *signals; |
823 | static ANSIG *signals; |
772 | static int signalmax; |
824 | static int signalmax; |
773 | |
825 | |
774 | static int sigpipe [2]; |
826 | static EV_ATOMIC_T gotsig; |
775 | static sig_atomic_t volatile gotsig; |
|
|
776 | static ev_io sigev; |
|
|
777 | |
827 | |
778 | void inline_size |
828 | void inline_size |
779 | signals_init (ANSIG *base, int count) |
829 | signals_init (ANSIG *base, int count) |
780 | { |
830 | { |
781 | while (count--) |
831 | while (count--) |
… | |
… | |
785 | |
835 | |
786 | ++base; |
836 | ++base; |
787 | } |
837 | } |
788 | } |
838 | } |
789 | |
839 | |
790 | static void |
840 | /*****************************************************************************/ |
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 | |
841 | |
841 | void inline_speed |
842 | void inline_speed |
842 | fd_intern (int fd) |
843 | fd_intern (int fd) |
843 | { |
844 | { |
844 | #ifdef _WIN32 |
845 | #ifdef _WIN32 |
… | |
… | |
849 | fcntl (fd, F_SETFL, O_NONBLOCK); |
850 | fcntl (fd, F_SETFL, O_NONBLOCK); |
850 | #endif |
851 | #endif |
851 | } |
852 | } |
852 | |
853 | |
853 | static void noinline |
854 | static void noinline |
854 | siginit (EV_P) |
855 | evpipe_init (EV_P) |
855 | { |
856 | { |
|
|
857 | if (!ev_is_active (&pipeev)) |
|
|
858 | { |
|
|
859 | #if EV_USE_EVENTFD |
|
|
860 | if ((evfd = eventfd (0, 0)) >= 0) |
|
|
861 | { |
|
|
862 | evpipe [0] = -1; |
|
|
863 | fd_intern (evfd); |
|
|
864 | ev_io_set (&pipeev, evfd, EV_READ); |
|
|
865 | } |
|
|
866 | else |
|
|
867 | #endif |
|
|
868 | { |
|
|
869 | while (pipe (evpipe)) |
|
|
870 | syserr ("(libev) error creating signal/async pipe"); |
|
|
871 | |
856 | fd_intern (sigpipe [0]); |
872 | fd_intern (evpipe [0]); |
857 | fd_intern (sigpipe [1]); |
873 | fd_intern (evpipe [1]); |
|
|
874 | ev_io_set (&pipeev, evpipe [0], EV_READ); |
|
|
875 | } |
858 | |
876 | |
859 | ev_io_set (&sigev, sigpipe [0], EV_READ); |
|
|
860 | ev_io_start (EV_A_ &sigev); |
877 | ev_io_start (EV_A_ &pipeev); |
861 | ev_unref (EV_A); /* child watcher should not keep loop alive */ |
878 | ev_unref (EV_A); /* watcher should not keep loop alive */ |
|
|
879 | } |
|
|
880 | } |
|
|
881 | |
|
|
882 | void inline_size |
|
|
883 | evpipe_write (EV_P_ EV_ATOMIC_T *flag) |
|
|
884 | { |
|
|
885 | if (!*flag) |
|
|
886 | { |
|
|
887 | int old_errno = errno; /* save errno because write might clobber it */ |
|
|
888 | |
|
|
889 | *flag = 1; |
|
|
890 | |
|
|
891 | #if EV_USE_EVENTFD |
|
|
892 | if (evfd >= 0) |
|
|
893 | { |
|
|
894 | uint64_t counter = 1; |
|
|
895 | write (evfd, &counter, sizeof (uint64_t)); |
|
|
896 | } |
|
|
897 | else |
|
|
898 | #endif |
|
|
899 | write (evpipe [1], &old_errno, 1); |
|
|
900 | |
|
|
901 | errno = old_errno; |
|
|
902 | } |
|
|
903 | } |
|
|
904 | |
|
|
905 | static void |
|
|
906 | pipecb (EV_P_ ev_io *iow, int revents) |
|
|
907 | { |
|
|
908 | #if EV_USE_EVENTFD |
|
|
909 | if (evfd >= 0) |
|
|
910 | { |
|
|
911 | uint64_t counter = 1; |
|
|
912 | read (evfd, &counter, sizeof (uint64_t)); |
|
|
913 | } |
|
|
914 | else |
|
|
915 | #endif |
|
|
916 | { |
|
|
917 | char dummy; |
|
|
918 | read (evpipe [0], &dummy, 1); |
|
|
919 | } |
|
|
920 | |
|
|
921 | if (gotsig && ev_is_default_loop (EV_A)) |
|
|
922 | { |
|
|
923 | int signum; |
|
|
924 | gotsig = 0; |
|
|
925 | |
|
|
926 | for (signum = signalmax; signum--; ) |
|
|
927 | if (signals [signum].gotsig) |
|
|
928 | ev_feed_signal_event (EV_A_ signum + 1); |
|
|
929 | } |
|
|
930 | |
|
|
931 | #if EV_ASYNC_ENABLE |
|
|
932 | if (gotasync) |
|
|
933 | { |
|
|
934 | int i; |
|
|
935 | gotasync = 0; |
|
|
936 | |
|
|
937 | for (i = asynccnt; i--; ) |
|
|
938 | if (asyncs [i]->sent) |
|
|
939 | { |
|
|
940 | asyncs [i]->sent = 0; |
|
|
941 | ev_feed_event (EV_A_ asyncs [i], EV_ASYNC); |
|
|
942 | } |
|
|
943 | } |
|
|
944 | #endif |
862 | } |
945 | } |
863 | |
946 | |
864 | /*****************************************************************************/ |
947 | /*****************************************************************************/ |
865 | |
948 | |
|
|
949 | static void |
|
|
950 | ev_sighandler (int signum) |
|
|
951 | { |
|
|
952 | #if EV_MULTIPLICITY |
|
|
953 | struct ev_loop *loop = &default_loop_struct; |
|
|
954 | #endif |
|
|
955 | |
|
|
956 | #if _WIN32 |
|
|
957 | signal (signum, ev_sighandler); |
|
|
958 | #endif |
|
|
959 | |
|
|
960 | signals [signum - 1].gotsig = 1; |
|
|
961 | evpipe_write (EV_A_ &gotsig); |
|
|
962 | } |
|
|
963 | |
|
|
964 | void noinline |
|
|
965 | ev_feed_signal_event (EV_P_ int signum) |
|
|
966 | { |
|
|
967 | WL w; |
|
|
968 | |
|
|
969 | #if EV_MULTIPLICITY |
|
|
970 | assert (("feeding signal events is only supported in the default loop", loop == ev_default_loop_ptr)); |
|
|
971 | #endif |
|
|
972 | |
|
|
973 | --signum; |
|
|
974 | |
|
|
975 | if (signum < 0 || signum >= signalmax) |
|
|
976 | return; |
|
|
977 | |
|
|
978 | signals [signum].gotsig = 0; |
|
|
979 | |
|
|
980 | for (w = signals [signum].head; w; w = w->next) |
|
|
981 | ev_feed_event (EV_A_ (W)w, EV_SIGNAL); |
|
|
982 | } |
|
|
983 | |
|
|
984 | /*****************************************************************************/ |
|
|
985 | |
866 | static WL childs [EV_PID_HASHSIZE]; |
986 | static WL childs [EV_PID_HASHSIZE]; |
867 | |
987 | |
868 | #ifndef _WIN32 |
988 | #ifndef _WIN32 |
869 | |
989 | |
870 | static ev_signal childev; |
990 | static ev_signal childev; |
871 | |
991 | |
|
|
992 | #ifndef WIFCONTINUED |
|
|
993 | # define WIFCONTINUED(status) 0 |
|
|
994 | #endif |
|
|
995 | |
872 | void inline_speed |
996 | void inline_speed |
873 | child_reap (EV_P_ ev_signal *sw, int chain, int pid, int status) |
997 | child_reap (EV_P_ int chain, int pid, int status) |
874 | { |
998 | { |
875 | ev_child *w; |
999 | ev_child *w; |
|
|
1000 | int traced = WIFSTOPPED (status) || WIFCONTINUED (status); |
876 | |
1001 | |
877 | for (w = (ev_child *)childs [chain & (EV_PID_HASHSIZE - 1)]; w; w = (ev_child *)((WL)w)->next) |
1002 | for (w = (ev_child *)childs [chain & (EV_PID_HASHSIZE - 1)]; w; w = (ev_child *)((WL)w)->next) |
|
|
1003 | { |
878 | if (w->pid == pid || !w->pid) |
1004 | if ((w->pid == pid || !w->pid) |
|
|
1005 | && (!traced || (w->flags & 1))) |
879 | { |
1006 | { |
880 | ev_set_priority (w, ev_priority (sw)); /* need to do it *now* */ |
1007 | 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; |
1008 | w->rpid = pid; |
882 | w->rstatus = status; |
1009 | w->rstatus = status; |
883 | ev_feed_event (EV_A_ (W)w, EV_CHILD); |
1010 | ev_feed_event (EV_A_ (W)w, EV_CHILD); |
884 | } |
1011 | } |
|
|
1012 | } |
885 | } |
1013 | } |
886 | |
1014 | |
887 | #ifndef WCONTINUED |
1015 | #ifndef WCONTINUED |
888 | # define WCONTINUED 0 |
1016 | # define WCONTINUED 0 |
889 | #endif |
1017 | #endif |
… | |
… | |
898 | if (!WCONTINUED |
1026 | if (!WCONTINUED |
899 | || errno != EINVAL |
1027 | || errno != EINVAL |
900 | || 0 >= (pid = waitpid (-1, &status, WNOHANG | WUNTRACED))) |
1028 | || 0 >= (pid = waitpid (-1, &status, WNOHANG | WUNTRACED))) |
901 | return; |
1029 | return; |
902 | |
1030 | |
903 | /* make sure we are called again until all childs have been reaped */ |
1031 | /* 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 */ |
1032 | /* 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); |
1033 | ev_feed_event (EV_A_ (W)sw, EV_SIGNAL); |
906 | |
1034 | |
907 | child_reap (EV_A_ sw, pid, pid, status); |
1035 | child_reap (EV_A_ pid, pid, status); |
908 | if (EV_PID_HASHSIZE > 1) |
1036 | 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 */ |
1037 | child_reap (EV_A_ 0, pid, status); /* this might trigger a watcher twice, but feed_event catches that */ |
910 | } |
1038 | } |
911 | |
1039 | |
912 | #endif |
1040 | #endif |
913 | |
1041 | |
914 | /*****************************************************************************/ |
1042 | /*****************************************************************************/ |
… | |
… | |
1032 | if (!clock_gettime (CLOCK_MONOTONIC, &ts)) |
1160 | if (!clock_gettime (CLOCK_MONOTONIC, &ts)) |
1033 | have_monotonic = 1; |
1161 | have_monotonic = 1; |
1034 | } |
1162 | } |
1035 | #endif |
1163 | #endif |
1036 | |
1164 | |
1037 | ev_rt_now = ev_time (); |
1165 | ev_rt_now = ev_time (); |
1038 | mn_now = get_clock (); |
1166 | mn_now = get_clock (); |
1039 | now_floor = mn_now; |
1167 | now_floor = mn_now; |
1040 | rtmn_diff = ev_rt_now - mn_now; |
1168 | rtmn_diff = ev_rt_now - mn_now; |
1041 | |
1169 | |
1042 | io_blocktime = 0.; |
1170 | io_blocktime = 0.; |
1043 | timeout_blocktime = 0.; |
1171 | timeout_blocktime = 0.; |
|
|
1172 | backend = 0; |
|
|
1173 | backend_fd = -1; |
|
|
1174 | gotasync = 0; |
|
|
1175 | #if EV_USE_INOTIFY |
|
|
1176 | fs_fd = -2; |
|
|
1177 | #endif |
1044 | |
1178 | |
1045 | /* pid check not overridable via env */ |
1179 | /* pid check not overridable via env */ |
1046 | #ifndef _WIN32 |
1180 | #ifndef _WIN32 |
1047 | if (flags & EVFLAG_FORKCHECK) |
1181 | if (flags & EVFLAG_FORKCHECK) |
1048 | curpid = getpid (); |
1182 | curpid = getpid (); |
… | |
… | |
1051 | if (!(flags & EVFLAG_NOENV) |
1185 | if (!(flags & EVFLAG_NOENV) |
1052 | && !enable_secure () |
1186 | && !enable_secure () |
1053 | && getenv ("LIBEV_FLAGS")) |
1187 | && getenv ("LIBEV_FLAGS")) |
1054 | flags = atoi (getenv ("LIBEV_FLAGS")); |
1188 | flags = atoi (getenv ("LIBEV_FLAGS")); |
1055 | |
1189 | |
1056 | if (!(flags & 0x0000ffffUL)) |
1190 | if (!(flags & 0x0000ffffU)) |
1057 | flags |= ev_recommended_backends (); |
1191 | flags |= ev_recommended_backends (); |
1058 | |
|
|
1059 | backend = 0; |
|
|
1060 | backend_fd = -1; |
|
|
1061 | #if EV_USE_INOTIFY |
|
|
1062 | fs_fd = -2; |
|
|
1063 | #endif |
|
|
1064 | |
1192 | |
1065 | #if EV_USE_PORT |
1193 | #if EV_USE_PORT |
1066 | if (!backend && (flags & EVBACKEND_PORT )) backend = port_init (EV_A_ flags); |
1194 | if (!backend && (flags & EVBACKEND_PORT )) backend = port_init (EV_A_ flags); |
1067 | #endif |
1195 | #endif |
1068 | #if EV_USE_KQUEUE |
1196 | #if EV_USE_KQUEUE |
… | |
… | |
1076 | #endif |
1204 | #endif |
1077 | #if EV_USE_SELECT |
1205 | #if EV_USE_SELECT |
1078 | if (!backend && (flags & EVBACKEND_SELECT)) backend = select_init (EV_A_ flags); |
1206 | if (!backend && (flags & EVBACKEND_SELECT)) backend = select_init (EV_A_ flags); |
1079 | #endif |
1207 | #endif |
1080 | |
1208 | |
1081 | ev_init (&sigev, sigcb); |
1209 | ev_init (&pipeev, pipecb); |
1082 | ev_set_priority (&sigev, EV_MAXPRI); |
1210 | ev_set_priority (&pipeev, EV_MAXPRI); |
1083 | } |
1211 | } |
1084 | } |
1212 | } |
1085 | |
1213 | |
1086 | static void noinline |
1214 | static void noinline |
1087 | loop_destroy (EV_P) |
1215 | loop_destroy (EV_P) |
1088 | { |
1216 | { |
1089 | int i; |
1217 | int i; |
|
|
1218 | |
|
|
1219 | if (ev_is_active (&pipeev)) |
|
|
1220 | { |
|
|
1221 | ev_ref (EV_A); /* signal watcher */ |
|
|
1222 | ev_io_stop (EV_A_ &pipeev); |
|
|
1223 | |
|
|
1224 | #if EV_USE_EVENTFD |
|
|
1225 | if (evfd >= 0) |
|
|
1226 | close (evfd); |
|
|
1227 | #endif |
|
|
1228 | |
|
|
1229 | if (evpipe [0] >= 0) |
|
|
1230 | { |
|
|
1231 | close (evpipe [0]); |
|
|
1232 | close (evpipe [1]); |
|
|
1233 | } |
|
|
1234 | } |
1090 | |
1235 | |
1091 | #if EV_USE_INOTIFY |
1236 | #if EV_USE_INOTIFY |
1092 | if (fs_fd >= 0) |
1237 | if (fs_fd >= 0) |
1093 | close (fs_fd); |
1238 | close (fs_fd); |
1094 | #endif |
1239 | #endif |
… | |
… | |
1131 | #if EV_FORK_ENABLE |
1276 | #if EV_FORK_ENABLE |
1132 | array_free (fork, EMPTY); |
1277 | array_free (fork, EMPTY); |
1133 | #endif |
1278 | #endif |
1134 | array_free (prepare, EMPTY); |
1279 | array_free (prepare, EMPTY); |
1135 | array_free (check, EMPTY); |
1280 | array_free (check, EMPTY); |
|
|
1281 | #if EV_ASYNC_ENABLE |
|
|
1282 | array_free (async, EMPTY); |
|
|
1283 | #endif |
1136 | |
1284 | |
1137 | backend = 0; |
1285 | backend = 0; |
1138 | } |
1286 | } |
1139 | |
1287 | |
1140 | void inline_size infy_fork (EV_P); |
1288 | void inline_size infy_fork (EV_P); |
… | |
… | |
1153 | #endif |
1301 | #endif |
1154 | #if EV_USE_INOTIFY |
1302 | #if EV_USE_INOTIFY |
1155 | infy_fork (EV_A); |
1303 | infy_fork (EV_A); |
1156 | #endif |
1304 | #endif |
1157 | |
1305 | |
1158 | if (ev_is_active (&sigev)) |
1306 | if (ev_is_active (&pipeev)) |
1159 | { |
1307 | { |
1160 | /* default loop */ |
1308 | /* this "locks" the handlers against writing to the pipe */ |
|
|
1309 | /* while we modify the fd vars */ |
|
|
1310 | gotsig = 1; |
|
|
1311 | #if EV_ASYNC_ENABLE |
|
|
1312 | gotasync = 1; |
|
|
1313 | #endif |
1161 | |
1314 | |
1162 | ev_ref (EV_A); |
1315 | ev_ref (EV_A); |
1163 | ev_io_stop (EV_A_ &sigev); |
1316 | ev_io_stop (EV_A_ &pipeev); |
|
|
1317 | |
|
|
1318 | #if EV_USE_EVENTFD |
|
|
1319 | if (evfd >= 0) |
|
|
1320 | close (evfd); |
|
|
1321 | #endif |
|
|
1322 | |
|
|
1323 | if (evpipe [0] >= 0) |
|
|
1324 | { |
1164 | close (sigpipe [0]); |
1325 | close (evpipe [0]); |
1165 | close (sigpipe [1]); |
1326 | close (evpipe [1]); |
|
|
1327 | } |
1166 | |
1328 | |
1167 | while (pipe (sigpipe)) |
|
|
1168 | syserr ("(libev) error creating pipe"); |
|
|
1169 | |
|
|
1170 | siginit (EV_A); |
1329 | evpipe_init (EV_A); |
|
|
1330 | /* now iterate over everything, in case we missed something */ |
1171 | sigcb (EV_A_ &sigev, EV_READ); |
1331 | pipecb (EV_A_ &pipeev, EV_READ); |
1172 | } |
1332 | } |
1173 | |
1333 | |
1174 | postfork = 0; |
1334 | postfork = 0; |
1175 | } |
1335 | } |
1176 | |
1336 | |
… | |
… | |
1198 | } |
1358 | } |
1199 | |
1359 | |
1200 | void |
1360 | void |
1201 | ev_loop_fork (EV_P) |
1361 | ev_loop_fork (EV_P) |
1202 | { |
1362 | { |
1203 | postfork = 1; |
1363 | postfork = 1; /* must be in line with ev_default_fork */ |
1204 | } |
1364 | } |
1205 | |
1365 | |
1206 | #endif |
1366 | #endif |
1207 | |
1367 | |
1208 | #if EV_MULTIPLICITY |
1368 | #if EV_MULTIPLICITY |
… | |
… | |
1211 | #else |
1371 | #else |
1212 | int |
1372 | int |
1213 | ev_default_loop (unsigned int flags) |
1373 | ev_default_loop (unsigned int flags) |
1214 | #endif |
1374 | #endif |
1215 | { |
1375 | { |
1216 | if (sigpipe [0] == sigpipe [1]) |
|
|
1217 | if (pipe (sigpipe)) |
|
|
1218 | return 0; |
|
|
1219 | |
|
|
1220 | if (!ev_default_loop_ptr) |
1376 | if (!ev_default_loop_ptr) |
1221 | { |
1377 | { |
1222 | #if EV_MULTIPLICITY |
1378 | #if EV_MULTIPLICITY |
1223 | struct ev_loop *loop = ev_default_loop_ptr = &default_loop_struct; |
1379 | struct ev_loop *loop = ev_default_loop_ptr = &default_loop_struct; |
1224 | #else |
1380 | #else |
… | |
… | |
1227 | |
1383 | |
1228 | loop_init (EV_A_ flags); |
1384 | loop_init (EV_A_ flags); |
1229 | |
1385 | |
1230 | if (ev_backend (EV_A)) |
1386 | if (ev_backend (EV_A)) |
1231 | { |
1387 | { |
1232 | siginit (EV_A); |
|
|
1233 | |
|
|
1234 | #ifndef _WIN32 |
1388 | #ifndef _WIN32 |
1235 | ev_signal_init (&childev, childcb, SIGCHLD); |
1389 | ev_signal_init (&childev, childcb, SIGCHLD); |
1236 | ev_set_priority (&childev, EV_MAXPRI); |
1390 | ev_set_priority (&childev, EV_MAXPRI); |
1237 | ev_signal_start (EV_A_ &childev); |
1391 | ev_signal_start (EV_A_ &childev); |
1238 | ev_unref (EV_A); /* child watcher should not keep loop alive */ |
1392 | ev_unref (EV_A); /* child watcher should not keep loop alive */ |
… | |
… | |
1255 | #ifndef _WIN32 |
1409 | #ifndef _WIN32 |
1256 | ev_ref (EV_A); /* child watcher */ |
1410 | ev_ref (EV_A); /* child watcher */ |
1257 | ev_signal_stop (EV_A_ &childev); |
1411 | ev_signal_stop (EV_A_ &childev); |
1258 | #endif |
1412 | #endif |
1259 | |
1413 | |
1260 | ev_ref (EV_A); /* signal watcher */ |
|
|
1261 | ev_io_stop (EV_A_ &sigev); |
|
|
1262 | |
|
|
1263 | close (sigpipe [0]); sigpipe [0] = 0; |
|
|
1264 | close (sigpipe [1]); sigpipe [1] = 0; |
|
|
1265 | |
|
|
1266 | loop_destroy (EV_A); |
1414 | loop_destroy (EV_A); |
1267 | } |
1415 | } |
1268 | |
1416 | |
1269 | void |
1417 | void |
1270 | ev_default_fork (void) |
1418 | ev_default_fork (void) |
… | |
… | |
1272 | #if EV_MULTIPLICITY |
1420 | #if EV_MULTIPLICITY |
1273 | struct ev_loop *loop = ev_default_loop_ptr; |
1421 | struct ev_loop *loop = ev_default_loop_ptr; |
1274 | #endif |
1422 | #endif |
1275 | |
1423 | |
1276 | if (backend) |
1424 | if (backend) |
1277 | postfork = 1; |
1425 | postfork = 1; /* must be in line with ev_loop_fork */ |
1278 | } |
1426 | } |
1279 | |
1427 | |
1280 | /*****************************************************************************/ |
1428 | /*****************************************************************************/ |
1281 | |
1429 | |
1282 | void |
1430 | void |
… | |
… | |
1491 | static int loop_done; |
1639 | static int loop_done; |
1492 | |
1640 | |
1493 | void |
1641 | void |
1494 | ev_loop (EV_P_ int flags) |
1642 | ev_loop (EV_P_ int flags) |
1495 | { |
1643 | { |
1496 | loop_done = flags & (EVLOOP_ONESHOT | EVLOOP_NONBLOCK) |
1644 | loop_done = EVUNLOOP_CANCEL; |
1497 | ? EVUNLOOP_ONE |
|
|
1498 | : EVUNLOOP_CANCEL; |
|
|
1499 | |
1645 | |
1500 | call_pending (EV_A); /* in case we recurse, ensure ordering stays nice and clean */ |
1646 | call_pending (EV_A); /* in case we recurse, ensure ordering stays nice and clean */ |
1501 | |
1647 | |
1502 | do |
1648 | do |
1503 | { |
1649 | { |
… | |
… | |
1599 | /* queue check watchers, to be executed first */ |
1745 | /* queue check watchers, to be executed first */ |
1600 | if (expect_false (checkcnt)) |
1746 | if (expect_false (checkcnt)) |
1601 | queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK); |
1747 | queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK); |
1602 | |
1748 | |
1603 | call_pending (EV_A); |
1749 | call_pending (EV_A); |
1604 | |
|
|
1605 | } |
1750 | } |
1606 | while (expect_true (activecnt && !loop_done)); |
1751 | while (expect_true ( |
|
|
1752 | activecnt |
|
|
1753 | && !loop_done |
|
|
1754 | && !(flags & (EVLOOP_ONESHOT | EVLOOP_NONBLOCK)) |
|
|
1755 | )); |
1607 | |
1756 | |
1608 | if (loop_done == EVUNLOOP_ONE) |
1757 | if (loop_done == EVUNLOOP_ONE) |
1609 | loop_done = EVUNLOOP_CANCEL; |
1758 | loop_done = EVUNLOOP_CANCEL; |
1610 | } |
1759 | } |
1611 | |
1760 | |
… | |
… | |
1857 | if (expect_false (ev_is_active (w))) |
2006 | if (expect_false (ev_is_active (w))) |
1858 | return; |
2007 | return; |
1859 | |
2008 | |
1860 | assert (("ev_signal_start called with illegal signal number", w->signum > 0)); |
2009 | assert (("ev_signal_start called with illegal signal number", w->signum > 0)); |
1861 | |
2010 | |
|
|
2011 | evpipe_init (EV_A); |
|
|
2012 | |
1862 | { |
2013 | { |
1863 | #ifndef _WIN32 |
2014 | #ifndef _WIN32 |
1864 | sigset_t full, prev; |
2015 | sigset_t full, prev; |
1865 | sigfillset (&full); |
2016 | sigfillset (&full); |
1866 | sigprocmask (SIG_SETMASK, &full, &prev); |
2017 | sigprocmask (SIG_SETMASK, &full, &prev); |
… | |
… | |
1877 | wlist_add (&signals [w->signum - 1].head, (WL)w); |
2028 | wlist_add (&signals [w->signum - 1].head, (WL)w); |
1878 | |
2029 | |
1879 | if (!((WL)w)->next) |
2030 | if (!((WL)w)->next) |
1880 | { |
2031 | { |
1881 | #if _WIN32 |
2032 | #if _WIN32 |
1882 | signal (w->signum, sighandler); |
2033 | signal (w->signum, ev_sighandler); |
1883 | #else |
2034 | #else |
1884 | struct sigaction sa; |
2035 | struct sigaction sa; |
1885 | sa.sa_handler = sighandler; |
2036 | sa.sa_handler = ev_sighandler; |
1886 | sigfillset (&sa.sa_mask); |
2037 | sigfillset (&sa.sa_mask); |
1887 | sa.sa_flags = SA_RESTART; /* if restarting works we save one iteration */ |
2038 | sa.sa_flags = SA_RESTART; /* if restarting works we save one iteration */ |
1888 | sigaction (w->signum, &sa, 0); |
2039 | sigaction (w->signum, &sa, 0); |
1889 | #endif |
2040 | #endif |
1890 | } |
2041 | } |
… | |
… | |
2379 | |
2530 | |
2380 | ev_stop (EV_A_ (W)w); |
2531 | ev_stop (EV_A_ (W)w); |
2381 | } |
2532 | } |
2382 | #endif |
2533 | #endif |
2383 | |
2534 | |
|
|
2535 | #if EV_ASYNC_ENABLE |
|
|
2536 | void |
|
|
2537 | ev_async_start (EV_P_ ev_async *w) |
|
|
2538 | { |
|
|
2539 | if (expect_false (ev_is_active (w))) |
|
|
2540 | return; |
|
|
2541 | |
|
|
2542 | evpipe_init (EV_A); |
|
|
2543 | |
|
|
2544 | ev_start (EV_A_ (W)w, ++asynccnt); |
|
|
2545 | array_needsize (ev_async *, asyncs, asyncmax, asynccnt, EMPTY2); |
|
|
2546 | asyncs [asynccnt - 1] = w; |
|
|
2547 | } |
|
|
2548 | |
|
|
2549 | void |
|
|
2550 | ev_async_stop (EV_P_ ev_async *w) |
|
|
2551 | { |
|
|
2552 | clear_pending (EV_A_ (W)w); |
|
|
2553 | if (expect_false (!ev_is_active (w))) |
|
|
2554 | return; |
|
|
2555 | |
|
|
2556 | { |
|
|
2557 | int active = ((W)w)->active; |
|
|
2558 | asyncs [active - 1] = asyncs [--asynccnt]; |
|
|
2559 | ((W)asyncs [active - 1])->active = active; |
|
|
2560 | } |
|
|
2561 | |
|
|
2562 | ev_stop (EV_A_ (W)w); |
|
|
2563 | } |
|
|
2564 | |
|
|
2565 | void |
|
|
2566 | ev_async_send (EV_P_ ev_async *w) |
|
|
2567 | { |
|
|
2568 | w->sent = 1; |
|
|
2569 | evpipe_write (EV_A_ &gotasync); |
|
|
2570 | } |
|
|
2571 | #endif |
|
|
2572 | |
2384 | /*****************************************************************************/ |
2573 | /*****************************************************************************/ |
2385 | |
2574 | |
2386 | struct ev_once |
2575 | struct ev_once |
2387 | { |
2576 | { |
2388 | ev_io io; |
2577 | ev_io io; |