1 | /* |
1 | /* |
2 | * libev event processing core, watcher management |
2 | * libev event processing core, watcher management |
3 | * |
3 | * |
4 | * Copyright (c) 2007,2008,2009 Marc Alexander Lehmann <libev@schmorp.de> |
4 | * Copyright (c) 2007,2008,2009,2010 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 | * |
… | |
… | |
163 | |
163 | |
164 | #include <assert.h> |
164 | #include <assert.h> |
165 | #include <errno.h> |
165 | #include <errno.h> |
166 | #include <sys/types.h> |
166 | #include <sys/types.h> |
167 | #include <time.h> |
167 | #include <time.h> |
|
|
168 | #include <limits.h> |
168 | |
169 | |
169 | #include <signal.h> |
170 | #include <signal.h> |
170 | |
171 | |
171 | #ifdef EV_H |
172 | #ifdef EV_H |
172 | # include EV_H |
173 | # include EV_H |
… | |
… | |
183 | # define WIN32_LEAN_AND_MEAN |
184 | # define WIN32_LEAN_AND_MEAN |
184 | # include <windows.h> |
185 | # include <windows.h> |
185 | # ifndef EV_SELECT_IS_WINSOCKET |
186 | # ifndef EV_SELECT_IS_WINSOCKET |
186 | # define EV_SELECT_IS_WINSOCKET 1 |
187 | # define EV_SELECT_IS_WINSOCKET 1 |
187 | # endif |
188 | # endif |
|
|
189 | # undef EV_AVOID_STDIO |
188 | #endif |
190 | #endif |
189 | |
191 | |
190 | /* this block tries to deduce configuration from header-defined symbols and defaults */ |
192 | /* this block tries to deduce configuration from header-defined symbols and defaults */ |
191 | |
193 | |
192 | /* try to deduce the maximum number of signals on this platform */ |
194 | /* try to deduce the maximum number of signals on this platform */ |
… | |
… | |
205 | #elif defined (MAXSIG) |
207 | #elif defined (MAXSIG) |
206 | # define EV_NSIG (MAXSIG+1) |
208 | # define EV_NSIG (MAXSIG+1) |
207 | #elif defined (MAX_SIG) |
209 | #elif defined (MAX_SIG) |
208 | # define EV_NSIG (MAX_SIG+1) |
210 | # define EV_NSIG (MAX_SIG+1) |
209 | #elif defined (SIGARRAYSIZE) |
211 | #elif defined (SIGARRAYSIZE) |
210 | # define EV_NSIG SIGARRAYSIZE /* Assume ary[SIGARRAYSIZE] */ |
212 | # define EV_NSIG (SIGARRAYSIZE) /* Assume ary[SIGARRAYSIZE] */ |
211 | #elif defined (_sys_nsig) |
213 | #elif defined (_sys_nsig) |
212 | # define EV_NSIG (_sys_nsig) /* Solaris 2.5 */ |
214 | # define EV_NSIG (_sys_nsig) /* Solaris 2.5 */ |
213 | #else |
215 | #else |
214 | # error "unable to find value for NSIG, please report" |
216 | # error "unable to find value for NSIG, please report" |
215 | /* to make it compile regardless, just remove the above line */ |
217 | /* to make it compile regardless, just remove the above line, */ |
|
|
218 | /* but consider reporting it, too! :) */ |
216 | # define EV_NSIG 65 |
219 | # define EV_NSIG 65 |
217 | #endif |
220 | #endif |
218 | |
221 | |
219 | #ifndef EV_USE_CLOCK_SYSCALL |
222 | #ifndef EV_USE_CLOCK_SYSCALL |
220 | # if __linux && __GLIBC__ >= 2 |
223 | # if __linux && __GLIBC__ >= 2 |
… | |
… | |
402 | # endif |
405 | # endif |
403 | # endif |
406 | # endif |
404 | # ifdef __cplusplus |
407 | # ifdef __cplusplus |
405 | extern "C" { |
408 | extern "C" { |
406 | # endif |
409 | # endif |
407 | int eventfd (unsigned int initval, int flags); |
410 | int (eventfd) (unsigned int initval, int flags); |
408 | # ifdef __cplusplus |
411 | # ifdef __cplusplus |
409 | } |
412 | } |
410 | # endif |
413 | # endif |
411 | #endif |
414 | #endif |
412 | |
415 | |
… | |
… | |
523 | # include "ev_win32.c" |
526 | # include "ev_win32.c" |
524 | #endif |
527 | #endif |
525 | |
528 | |
526 | /*****************************************************************************/ |
529 | /*****************************************************************************/ |
527 | |
530 | |
|
|
531 | #if EV_AVOID_STDIO |
|
|
532 | static void noinline |
|
|
533 | ev_printerr (const char *msg) |
|
|
534 | { |
|
|
535 | write (STDERR_FILENO, msg, strlen (msg)); |
|
|
536 | } |
|
|
537 | #endif |
|
|
538 | |
528 | static void (*syserr_cb)(const char *msg); |
539 | static void (*syserr_cb)(const char *msg); |
529 | |
540 | |
530 | void |
541 | void |
531 | ev_set_syserr_cb (void (*cb)(const char *msg)) |
542 | ev_set_syserr_cb (void (*cb)(const char *msg)) |
532 | { |
543 | { |
… | |
… | |
541 | |
552 | |
542 | if (syserr_cb) |
553 | if (syserr_cb) |
543 | syserr_cb (msg); |
554 | syserr_cb (msg); |
544 | else |
555 | else |
545 | { |
556 | { |
|
|
557 | #if EV_AVOID_STDIO |
|
|
558 | const char *err = strerror (errno); |
|
|
559 | |
|
|
560 | ev_printerr (msg); |
|
|
561 | ev_printerr (": "); |
|
|
562 | ev_printerr (err); |
|
|
563 | ev_printerr ("\n"); |
|
|
564 | #else |
546 | perror (msg); |
565 | perror (msg); |
|
|
566 | #endif |
547 | abort (); |
567 | abort (); |
548 | } |
568 | } |
549 | } |
569 | } |
550 | |
570 | |
551 | static void * |
571 | static void * |
552 | ev_realloc_emul (void *ptr, long size) |
572 | ev_realloc_emul (void *ptr, long size) |
553 | { |
573 | { |
|
|
574 | #if __GLIBC__ |
|
|
575 | return realloc (ptr, size); |
|
|
576 | #else |
554 | /* some systems, notably openbsd and darwin, fail to properly |
577 | /* some systems, notably openbsd and darwin, fail to properly |
555 | * implement realloc (x, 0) (as required by both ansi c-98 and |
578 | * implement realloc (x, 0) (as required by both ansi c-89 and |
556 | * the single unix specification, so work around them here. |
579 | * the single unix specification, so work around them here. |
557 | */ |
580 | */ |
558 | |
581 | |
559 | if (size) |
582 | if (size) |
560 | return realloc (ptr, size); |
583 | return realloc (ptr, size); |
561 | |
584 | |
562 | free (ptr); |
585 | free (ptr); |
563 | return 0; |
586 | return 0; |
|
|
587 | #endif |
564 | } |
588 | } |
565 | |
589 | |
566 | static void *(*alloc)(void *ptr, long size) = ev_realloc_emul; |
590 | static void *(*alloc)(void *ptr, long size) = ev_realloc_emul; |
567 | |
591 | |
568 | void |
592 | void |
… | |
… | |
576 | { |
600 | { |
577 | ptr = alloc (ptr, size); |
601 | ptr = alloc (ptr, size); |
578 | |
602 | |
579 | if (!ptr && size) |
603 | if (!ptr && size) |
580 | { |
604 | { |
|
|
605 | #if EV_AVOID_STDIO |
|
|
606 | ev_printerr ("libev: memory allocation failed, aborting.\n"); |
|
|
607 | #else |
581 | fprintf (stderr, "libev: cannot allocate %ld bytes, aborting.", size); |
608 | fprintf (stderr, "libev: cannot allocate %ld bytes, aborting.", size); |
|
|
609 | #endif |
582 | abort (); |
610 | abort (); |
583 | } |
611 | } |
584 | |
612 | |
585 | return ptr; |
613 | return ptr; |
586 | } |
614 | } |
… | |
… | |
965 | ev_io_stop (EV_A_ w); |
993 | ev_io_stop (EV_A_ w); |
966 | ev_feed_event (EV_A_ (W)w, EV_ERROR | EV_READ | EV_WRITE); |
994 | ev_feed_event (EV_A_ (W)w, EV_ERROR | EV_READ | EV_WRITE); |
967 | } |
995 | } |
968 | } |
996 | } |
969 | |
997 | |
970 | /* check whether the given fd is atcually valid, for error recovery */ |
998 | /* check whether the given fd is actually valid, for error recovery */ |
971 | inline_size int |
999 | inline_size int |
972 | fd_valid (int fd) |
1000 | fd_valid (int fd) |
973 | { |
1001 | { |
974 | #ifdef _WIN32 |
1002 | #ifdef _WIN32 |
975 | return EV_FD_TO_WIN32_HANDLE (fd) != -1; |
1003 | return EV_FD_TO_WIN32_HANDLE (fd) != -1; |
… | |
… | |
1015 | { |
1043 | { |
1016 | anfds [fd].events = 0; |
1044 | anfds [fd].events = 0; |
1017 | anfds [fd].emask = 0; |
1045 | anfds [fd].emask = 0; |
1018 | fd_change (EV_A_ fd, EV__IOFDSET | EV_ANFD_REIFY); |
1046 | fd_change (EV_A_ fd, EV__IOFDSET | EV_ANFD_REIFY); |
1019 | } |
1047 | } |
|
|
1048 | } |
|
|
1049 | |
|
|
1050 | /* used to prepare libev internal fd's */ |
|
|
1051 | /* this is not fork-safe */ |
|
|
1052 | inline_speed void |
|
|
1053 | fd_intern (int fd) |
|
|
1054 | { |
|
|
1055 | #ifdef _WIN32 |
|
|
1056 | unsigned long arg = 1; |
|
|
1057 | ioctlsocket (EV_FD_TO_WIN32_HANDLE (fd), FIONBIO, &arg); |
|
|
1058 | #else |
|
|
1059 | fcntl (fd, F_SETFD, FD_CLOEXEC); |
|
|
1060 | fcntl (fd, F_SETFL, O_NONBLOCK); |
|
|
1061 | #endif |
1020 | } |
1062 | } |
1021 | |
1063 | |
1022 | /*****************************************************************************/ |
1064 | /*****************************************************************************/ |
1023 | |
1065 | |
1024 | /* |
1066 | /* |
… | |
… | |
1178 | |
1220 | |
1179 | static ANSIG signals [EV_NSIG - 1]; |
1221 | static ANSIG signals [EV_NSIG - 1]; |
1180 | |
1222 | |
1181 | /*****************************************************************************/ |
1223 | /*****************************************************************************/ |
1182 | |
1224 | |
1183 | /* used to prepare libev internal fd's */ |
1225 | #if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE |
1184 | /* this is not fork-safe */ |
|
|
1185 | inline_speed void |
|
|
1186 | fd_intern (int fd) |
|
|
1187 | { |
|
|
1188 | #ifdef _WIN32 |
|
|
1189 | unsigned long arg = 1; |
|
|
1190 | ioctlsocket (EV_FD_TO_WIN32_HANDLE (fd), FIONBIO, &arg); |
|
|
1191 | #else |
|
|
1192 | fcntl (fd, F_SETFD, FD_CLOEXEC); |
|
|
1193 | fcntl (fd, F_SETFL, O_NONBLOCK); |
|
|
1194 | #endif |
|
|
1195 | } |
|
|
1196 | |
1226 | |
1197 | static void noinline |
1227 | static void noinline |
1198 | evpipe_init (EV_P) |
1228 | evpipe_init (EV_P) |
1199 | { |
1229 | { |
1200 | if (!ev_is_active (&pipe_w)) |
1230 | if (!ev_is_active (&pipe_w)) |
1201 | { |
1231 | { |
1202 | #if EV_USE_EVENTFD |
1232 | # if EV_USE_EVENTFD |
1203 | evfd = eventfd (0, EFD_NONBLOCK | EFD_CLOEXEC); |
1233 | evfd = eventfd (0, EFD_NONBLOCK | EFD_CLOEXEC); |
1204 | if (evfd < 0 && errno == EINVAL) |
1234 | if (evfd < 0 && errno == EINVAL) |
1205 | evfd = eventfd (0, 0); |
1235 | evfd = eventfd (0, 0); |
1206 | |
1236 | |
1207 | if (evfd >= 0) |
1237 | if (evfd >= 0) |
… | |
… | |
1209 | evpipe [0] = -1; |
1239 | evpipe [0] = -1; |
1210 | fd_intern (evfd); /* doing it twice doesn't hurt */ |
1240 | fd_intern (evfd); /* doing it twice doesn't hurt */ |
1211 | ev_io_set (&pipe_w, evfd, EV_READ); |
1241 | ev_io_set (&pipe_w, evfd, EV_READ); |
1212 | } |
1242 | } |
1213 | else |
1243 | else |
1214 | #endif |
1244 | # endif |
1215 | { |
1245 | { |
1216 | while (pipe (evpipe)) |
1246 | while (pipe (evpipe)) |
1217 | ev_syserr ("(libev) error creating signal/async pipe"); |
1247 | ev_syserr ("(libev) error creating signal/async pipe"); |
1218 | |
1248 | |
1219 | fd_intern (evpipe [0]); |
1249 | fd_intern (evpipe [0]); |
… | |
… | |
1230 | evpipe_write (EV_P_ EV_ATOMIC_T *flag) |
1260 | evpipe_write (EV_P_ EV_ATOMIC_T *flag) |
1231 | { |
1261 | { |
1232 | if (!*flag) |
1262 | if (!*flag) |
1233 | { |
1263 | { |
1234 | int old_errno = errno; /* save errno because write might clobber it */ |
1264 | int old_errno = errno; /* save errno because write might clobber it */ |
|
|
1265 | char dummy; |
1235 | |
1266 | |
1236 | *flag = 1; |
1267 | *flag = 1; |
1237 | |
1268 | |
1238 | #if EV_USE_EVENTFD |
1269 | #if EV_USE_EVENTFD |
1239 | if (evfd >= 0) |
1270 | if (evfd >= 0) |
… | |
… | |
1241 | uint64_t counter = 1; |
1272 | uint64_t counter = 1; |
1242 | write (evfd, &counter, sizeof (uint64_t)); |
1273 | write (evfd, &counter, sizeof (uint64_t)); |
1243 | } |
1274 | } |
1244 | else |
1275 | else |
1245 | #endif |
1276 | #endif |
1246 | write (evpipe [1], &old_errno, 1); |
1277 | write (evpipe [1], &dummy, 1); |
1247 | |
1278 | |
1248 | errno = old_errno; |
1279 | errno = old_errno; |
1249 | } |
1280 | } |
1250 | } |
1281 | } |
1251 | |
1282 | |
… | |
… | |
1352 | break; |
1383 | break; |
1353 | } |
1384 | } |
1354 | } |
1385 | } |
1355 | #endif |
1386 | #endif |
1356 | |
1387 | |
|
|
1388 | #endif |
|
|
1389 | |
1357 | /*****************************************************************************/ |
1390 | /*****************************************************************************/ |
1358 | |
1391 | |
|
|
1392 | #if EV_CHILD_ENABLE |
1359 | static WL childs [EV_PID_HASHSIZE]; |
1393 | static WL childs [EV_PID_HASHSIZE]; |
1360 | |
|
|
1361 | #ifndef _WIN32 |
|
|
1362 | |
1394 | |
1363 | static ev_signal childev; |
1395 | static ev_signal childev; |
1364 | |
1396 | |
1365 | #ifndef WIFCONTINUED |
1397 | #ifndef WIFCONTINUED |
1366 | # define WIFCONTINUED(status) 0 |
1398 | # define WIFCONTINUED(status) 0 |
… | |
… | |
1635 | if (!backend && (flags & EVBACKEND_SELECT)) backend = select_init (EV_A_ flags); |
1667 | if (!backend && (flags & EVBACKEND_SELECT)) backend = select_init (EV_A_ flags); |
1636 | #endif |
1668 | #endif |
1637 | |
1669 | |
1638 | ev_prepare_init (&pending_w, pendingcb); |
1670 | ev_prepare_init (&pending_w, pendingcb); |
1639 | |
1671 | |
|
|
1672 | #if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE |
1640 | ev_init (&pipe_w, pipecb); |
1673 | ev_init (&pipe_w, pipecb); |
1641 | ev_set_priority (&pipe_w, EV_MAXPRI); |
1674 | ev_set_priority (&pipe_w, EV_MAXPRI); |
|
|
1675 | #endif |
1642 | } |
1676 | } |
1643 | } |
1677 | } |
1644 | |
1678 | |
1645 | /* free up a loop structure */ |
1679 | /* free up a loop structure */ |
1646 | static void noinline |
1680 | static void noinline |
… | |
… | |
1896 | |
1930 | |
1897 | assert (checkmax >= checkcnt); |
1931 | assert (checkmax >= checkcnt); |
1898 | array_verify (EV_A_ (W *)checks, checkcnt); |
1932 | array_verify (EV_A_ (W *)checks, checkcnt); |
1899 | |
1933 | |
1900 | # if 0 |
1934 | # if 0 |
|
|
1935 | #if EV_CHILD_ENABLE |
1901 | for (w = (ev_child *)childs [chain & (EV_PID_HASHSIZE - 1)]; w; w = (ev_child *)((WL)w)->next) |
1936 | for (w = (ev_child *)childs [chain & (EV_PID_HASHSIZE - 1)]; w; w = (ev_child *)((WL)w)->next) |
1902 | for (signum = EV_NSIG; signum--; ) if (signals [signum].pending) |
1937 | for (signum = EV_NSIG; signum--; ) if (signals [signum].pending) |
|
|
1938 | #endif |
1903 | # endif |
1939 | # endif |
1904 | #endif |
1940 | #endif |
1905 | } |
1941 | } |
1906 | #endif |
1942 | #endif |
1907 | |
1943 | |
… | |
… | |
1923 | |
1959 | |
1924 | loop_init (EV_A_ flags); |
1960 | loop_init (EV_A_ flags); |
1925 | |
1961 | |
1926 | if (ev_backend (EV_A)) |
1962 | if (ev_backend (EV_A)) |
1927 | { |
1963 | { |
1928 | #ifndef _WIN32 |
1964 | #if EV_CHILD_ENABLE |
1929 | ev_signal_init (&childev, childcb, SIGCHLD); |
1965 | ev_signal_init (&childev, childcb, SIGCHLD); |
1930 | ev_set_priority (&childev, EV_MAXPRI); |
1966 | ev_set_priority (&childev, EV_MAXPRI); |
1931 | ev_signal_start (EV_A_ &childev); |
1967 | ev_signal_start (EV_A_ &childev); |
1932 | ev_unref (EV_A); /* child watcher should not keep loop alive */ |
1968 | ev_unref (EV_A); /* child watcher should not keep loop alive */ |
1933 | #endif |
1969 | #endif |
… | |
… | |
1946 | EV_P = ev_default_loop_ptr; |
1982 | EV_P = ev_default_loop_ptr; |
1947 | #endif |
1983 | #endif |
1948 | |
1984 | |
1949 | ev_default_loop_ptr = 0; |
1985 | ev_default_loop_ptr = 0; |
1950 | |
1986 | |
1951 | #ifndef _WIN32 |
1987 | #if EV_CHILD_ENABLE |
1952 | ev_ref (EV_A); /* child watcher */ |
1988 | ev_ref (EV_A); /* child watcher */ |
1953 | ev_signal_stop (EV_A_ &childev); |
1989 | ev_signal_stop (EV_A_ &childev); |
1954 | #endif |
1990 | #endif |
1955 | |
1991 | |
1956 | loop_destroy (EV_A); |
1992 | loop_destroy (EV_A); |
… | |
… | |
2507 | |
2543 | |
2508 | if (expect_false (ev_is_active (w))) |
2544 | if (expect_false (ev_is_active (w))) |
2509 | return; |
2545 | return; |
2510 | |
2546 | |
2511 | assert (("libev: ev_io_start called with negative fd", fd >= 0)); |
2547 | assert (("libev: ev_io_start called with negative fd", fd >= 0)); |
2512 | assert (("libev: ev_io start called with illegal event mask", !(w->events & ~(EV__IOFDSET | EV_READ | EV_WRITE)))); |
2548 | assert (("libev: ev_io_start called with illegal event mask", !(w->events & ~(EV__IOFDSET | EV_READ | EV_WRITE)))); |
2513 | |
2549 | |
2514 | EV_FREQUENT_CHECK; |
2550 | EV_FREQUENT_CHECK; |
2515 | |
2551 | |
2516 | ev_start (EV_A_ (W)w, 1); |
2552 | ev_start (EV_A_ (W)w, 1); |
2517 | array_needsize (ANFD, anfds, anfdmax, fd + 1, array_init_zero); |
2553 | array_needsize (ANFD, anfds, anfdmax, fd + 1, array_init_zero); |
… | |
… | |
2587 | timers [active] = timers [timercnt + HEAP0]; |
2623 | timers [active] = timers [timercnt + HEAP0]; |
2588 | adjustheap (timers, timercnt, active); |
2624 | adjustheap (timers, timercnt, active); |
2589 | } |
2625 | } |
2590 | } |
2626 | } |
2591 | |
2627 | |
2592 | EV_FREQUENT_CHECK; |
|
|
2593 | |
|
|
2594 | ev_at (w) -= mn_now; |
2628 | ev_at (w) -= mn_now; |
2595 | |
2629 | |
2596 | ev_stop (EV_A_ (W)w); |
2630 | ev_stop (EV_A_ (W)w); |
|
|
2631 | |
|
|
2632 | EV_FREQUENT_CHECK; |
2597 | } |
2633 | } |
2598 | |
2634 | |
2599 | void noinline |
2635 | void noinline |
2600 | ev_timer_again (EV_P_ ev_timer *w) |
2636 | ev_timer_again (EV_P_ ev_timer *w) |
2601 | { |
2637 | { |
… | |
… | |
2680 | periodics [active] = periodics [periodiccnt + HEAP0]; |
2716 | periodics [active] = periodics [periodiccnt + HEAP0]; |
2681 | adjustheap (periodics, periodiccnt, active); |
2717 | adjustheap (periodics, periodiccnt, active); |
2682 | } |
2718 | } |
2683 | } |
2719 | } |
2684 | |
2720 | |
2685 | EV_FREQUENT_CHECK; |
|
|
2686 | |
|
|
2687 | ev_stop (EV_A_ (W)w); |
2721 | ev_stop (EV_A_ (W)w); |
|
|
2722 | |
|
|
2723 | EV_FREQUENT_CHECK; |
2688 | } |
2724 | } |
2689 | |
2725 | |
2690 | void noinline |
2726 | void noinline |
2691 | ev_periodic_again (EV_P_ ev_periodic *w) |
2727 | ev_periodic_again (EV_P_ ev_periodic *w) |
2692 | { |
2728 | { |
… | |
… | |
2697 | #endif |
2733 | #endif |
2698 | |
2734 | |
2699 | #ifndef SA_RESTART |
2735 | #ifndef SA_RESTART |
2700 | # define SA_RESTART 0 |
2736 | # define SA_RESTART 0 |
2701 | #endif |
2737 | #endif |
|
|
2738 | |
|
|
2739 | #if EV_SIGNAL_ENABLE |
2702 | |
2740 | |
2703 | void noinline |
2741 | void noinline |
2704 | ev_signal_start (EV_P_ ev_signal *w) |
2742 | ev_signal_start (EV_P_ ev_signal *w) |
2705 | { |
2743 | { |
2706 | if (expect_false (ev_is_active (w))) |
2744 | if (expect_false (ev_is_active (w))) |
… | |
… | |
2813 | } |
2851 | } |
2814 | |
2852 | |
2815 | EV_FREQUENT_CHECK; |
2853 | EV_FREQUENT_CHECK; |
2816 | } |
2854 | } |
2817 | |
2855 | |
|
|
2856 | #endif |
|
|
2857 | |
|
|
2858 | #if EV_CHILD_ENABLE |
|
|
2859 | |
2818 | void |
2860 | void |
2819 | ev_child_start (EV_P_ ev_child *w) |
2861 | ev_child_start (EV_P_ ev_child *w) |
2820 | { |
2862 | { |
2821 | #if EV_MULTIPLICITY |
2863 | #if EV_MULTIPLICITY |
2822 | assert (("libev: child watchers are only supported in the default loop", loop == ev_default_loop_ptr)); |
2864 | assert (("libev: child watchers are only supported in the default loop", loop == ev_default_loop_ptr)); |
… | |
… | |
2845 | ev_stop (EV_A_ (W)w); |
2887 | ev_stop (EV_A_ (W)w); |
2846 | |
2888 | |
2847 | EV_FREQUENT_CHECK; |
2889 | EV_FREQUENT_CHECK; |
2848 | } |
2890 | } |
2849 | |
2891 | |
|
|
2892 | #endif |
|
|
2893 | |
2850 | #if EV_STAT_ENABLE |
2894 | #if EV_STAT_ENABLE |
2851 | |
2895 | |
2852 | # ifdef _WIN32 |
2896 | # ifdef _WIN32 |
2853 | # undef lstat |
2897 | # undef lstat |
2854 | # define lstat(a,b) _stati64 (a,b) |
2898 | # define lstat(a,b) _stati64 (a,b) |
… | |
… | |
2859 | #define MIN_STAT_INTERVAL 0.1074891 |
2903 | #define MIN_STAT_INTERVAL 0.1074891 |
2860 | |
2904 | |
2861 | static void noinline stat_timer_cb (EV_P_ ev_timer *w_, int revents); |
2905 | static void noinline stat_timer_cb (EV_P_ ev_timer *w_, int revents); |
2862 | |
2906 | |
2863 | #if EV_USE_INOTIFY |
2907 | #if EV_USE_INOTIFY |
2864 | # define EV_INOTIFY_BUFSIZE 8192 |
2908 | |
|
|
2909 | /* the * 2 is to allow for alignment padding, which for some reason is >> 8 */ |
|
|
2910 | # define EV_INOTIFY_BUFSIZE (sizeof (struct inotify_event) * 2 + NAME_MAX) |
2865 | |
2911 | |
2866 | static void noinline |
2912 | static void noinline |
2867 | infy_add (EV_P_ ev_stat *w) |
2913 | infy_add (EV_P_ ev_stat *w) |
2868 | { |
2914 | { |
2869 | w->wd = inotify_add_watch (fs_fd, w->path, IN_ATTRIB | IN_DELETE_SELF | IN_MOVE_SELF | IN_MODIFY | IN_DONT_FOLLOW | IN_MASK_ADD); |
2915 | w->wd = inotify_add_watch (fs_fd, w->path, IN_ATTRIB | IN_DELETE_SELF | IN_MOVE_SELF | IN_MODIFY | IN_DONT_FOLLOW | IN_MASK_ADD); |
… | |
… | |
2978 | |
3024 | |
2979 | static void |
3025 | static void |
2980 | infy_cb (EV_P_ ev_io *w, int revents) |
3026 | infy_cb (EV_P_ ev_io *w, int revents) |
2981 | { |
3027 | { |
2982 | char buf [EV_INOTIFY_BUFSIZE]; |
3028 | char buf [EV_INOTIFY_BUFSIZE]; |
2983 | struct inotify_event *ev = (struct inotify_event *)buf; |
|
|
2984 | int ofs; |
3029 | int ofs; |
2985 | int len = read (fs_fd, buf, sizeof (buf)); |
3030 | int len = read (fs_fd, buf, sizeof (buf)); |
2986 | |
3031 | |
2987 | for (ofs = 0; ofs < len; ofs += sizeof (struct inotify_event) + ev->len) |
3032 | for (ofs = 0; ofs < len; ) |
|
|
3033 | { |
|
|
3034 | struct inotify_event *ev = (struct inotify_event *)(buf + ofs); |
2988 | infy_wd (EV_A_ ev->wd, ev->wd, ev); |
3035 | infy_wd (EV_A_ ev->wd, ev->wd, ev); |
|
|
3036 | ofs += sizeof (struct inotify_event) + ev->len; |
|
|
3037 | } |
|
|
3038 | } |
|
|
3039 | |
|
|
3040 | inline_size unsigned int |
|
|
3041 | ev_linux_version (void) |
|
|
3042 | { |
|
|
3043 | struct utsname buf; |
|
|
3044 | unsigned int v; |
|
|
3045 | int i; |
|
|
3046 | char *p = buf.release; |
|
|
3047 | |
|
|
3048 | if (uname (&buf)) |
|
|
3049 | return 0; |
|
|
3050 | |
|
|
3051 | for (i = 3+1; --i; ) |
|
|
3052 | { |
|
|
3053 | unsigned int c = 0; |
|
|
3054 | |
|
|
3055 | for (;;) |
|
|
3056 | { |
|
|
3057 | if (*p >= '0' && *p <= '9') |
|
|
3058 | c = c * 10 + *p++ - '0'; |
|
|
3059 | else |
|
|
3060 | { |
|
|
3061 | p += *p == '.'; |
|
|
3062 | break; |
|
|
3063 | } |
|
|
3064 | } |
|
|
3065 | |
|
|
3066 | v = (v << 8) | c; |
|
|
3067 | } |
|
|
3068 | |
|
|
3069 | return v; |
2989 | } |
3070 | } |
2990 | |
3071 | |
2991 | inline_size void |
3072 | inline_size void |
2992 | check_2625 (EV_P) |
3073 | ev_check_2625 (EV_P) |
2993 | { |
3074 | { |
2994 | /* kernels < 2.6.25 are borked |
3075 | /* kernels < 2.6.25 are borked |
2995 | * http://www.ussg.indiana.edu/hypermail/linux/kernel/0711.3/1208.html |
3076 | * http://www.ussg.indiana.edu/hypermail/linux/kernel/0711.3/1208.html |
2996 | */ |
3077 | */ |
2997 | struct utsname buf; |
3078 | if (ev_linux_version () < 0x020619) |
2998 | int major, minor, micro; |
|
|
2999 | |
|
|
3000 | if (uname (&buf)) |
|
|
3001 | return; |
|
|
3002 | |
|
|
3003 | if (sscanf (buf.release, "%d.%d.%d", &major, &minor, µ) != 3) |
|
|
3004 | return; |
|
|
3005 | |
|
|
3006 | if (major < 2 |
|
|
3007 | || (major == 2 && minor < 6) |
|
|
3008 | || (major == 2 && minor == 6 && micro < 25)) |
|
|
3009 | return; |
3079 | return; |
3010 | |
3080 | |
3011 | fs_2625 = 1; |
3081 | fs_2625 = 1; |
3012 | } |
3082 | } |
3013 | |
3083 | |
… | |
… | |
3028 | if (fs_fd != -2) |
3098 | if (fs_fd != -2) |
3029 | return; |
3099 | return; |
3030 | |
3100 | |
3031 | fs_fd = -1; |
3101 | fs_fd = -1; |
3032 | |
3102 | |
3033 | check_2625 (EV_A); |
3103 | ev_check_2625 (EV_A); |
3034 | |
3104 | |
3035 | fs_fd = infy_newfd (); |
3105 | fs_fd = infy_newfd (); |
3036 | |
3106 | |
3037 | if (fs_fd >= 0) |
3107 | if (fs_fd >= 0) |
3038 | { |
3108 | { |
… | |
… | |
3423 | |
3493 | |
3424 | ev_io_stop (EV_A_ &w->io); |
3494 | ev_io_stop (EV_A_ &w->io); |
3425 | ev_prepare_stop (EV_A_ &w->prepare); |
3495 | ev_prepare_stop (EV_A_ &w->prepare); |
3426 | ev_fork_stop (EV_A_ &w->fork); |
3496 | ev_fork_stop (EV_A_ &w->fork); |
3427 | |
3497 | |
|
|
3498 | ev_stop (EV_A_ (W)w); |
|
|
3499 | |
3428 | EV_FREQUENT_CHECK; |
3500 | EV_FREQUENT_CHECK; |
3429 | } |
3501 | } |
3430 | #endif |
3502 | #endif |
3431 | |
3503 | |
3432 | #if EV_FORK_ENABLE |
3504 | #if EV_FORK_ENABLE |