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 | * |
… | |
… | |
110 | # define EV_USE_EPOLL 0 |
110 | # define EV_USE_EPOLL 0 |
111 | # endif |
111 | # endif |
112 | # endif |
112 | # endif |
113 | |
113 | |
114 | # ifndef EV_USE_KQUEUE |
114 | # ifndef EV_USE_KQUEUE |
115 | # if HAVE_KQUEUE && HAVE_SYS_EVENT_H && HAVE_SYS_QUEUE_H |
115 | # if HAVE_KQUEUE && HAVE_SYS_EVENT_H |
116 | # define EV_USE_KQUEUE 1 |
116 | # define EV_USE_KQUEUE 1 |
117 | # else |
117 | # else |
118 | # define EV_USE_KQUEUE 0 |
118 | # define EV_USE_KQUEUE 0 |
119 | # endif |
119 | # endif |
120 | # endif |
120 | # endif |
… | |
… | |
153 | |
153 | |
154 | #endif |
154 | #endif |
155 | |
155 | |
156 | #include <math.h> |
156 | #include <math.h> |
157 | #include <stdlib.h> |
157 | #include <stdlib.h> |
|
|
158 | #include <string.h> |
158 | #include <fcntl.h> |
159 | #include <fcntl.h> |
159 | #include <stddef.h> |
160 | #include <stddef.h> |
160 | |
161 | |
161 | #include <stdio.h> |
162 | #include <stdio.h> |
162 | |
163 | |
163 | #include <assert.h> |
164 | #include <assert.h> |
164 | #include <errno.h> |
165 | #include <errno.h> |
165 | #include <sys/types.h> |
166 | #include <sys/types.h> |
166 | #include <time.h> |
167 | #include <time.h> |
|
|
168 | #include <limits.h> |
167 | |
169 | |
168 | #include <signal.h> |
170 | #include <signal.h> |
169 | |
171 | |
170 | #ifdef EV_H |
172 | #ifdef EV_H |
171 | # include EV_H |
173 | # include EV_H |
… | |
… | |
182 | # define WIN32_LEAN_AND_MEAN |
184 | # define WIN32_LEAN_AND_MEAN |
183 | # include <windows.h> |
185 | # include <windows.h> |
184 | # ifndef EV_SELECT_IS_WINSOCKET |
186 | # ifndef EV_SELECT_IS_WINSOCKET |
185 | # define EV_SELECT_IS_WINSOCKET 1 |
187 | # define EV_SELECT_IS_WINSOCKET 1 |
186 | # endif |
188 | # endif |
|
|
189 | # undef EV_AVOID_STDIO |
187 | #endif |
190 | #endif |
188 | |
191 | |
189 | /* 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 */ |
190 | |
193 | |
191 | /* try to deduce the maximum number of signals on this platform */ |
194 | /* try to deduce the maximum number of signals on this platform */ |
… | |
… | |
343 | # endif |
346 | # endif |
344 | #endif |
347 | #endif |
345 | |
348 | |
346 | /* this block fixes any misconfiguration where we know we run into trouble otherwise */ |
349 | /* this block fixes any misconfiguration where we know we run into trouble otherwise */ |
347 | |
350 | |
|
|
351 | #ifdef _AIX |
|
|
352 | /* AIX has a completely broken poll.h header */ |
|
|
353 | # undef EV_USE_POLL |
|
|
354 | # define EV_USE_POLL 0 |
|
|
355 | #endif |
|
|
356 | |
348 | #ifndef CLOCK_MONOTONIC |
357 | #ifndef CLOCK_MONOTONIC |
349 | # undef EV_USE_MONOTONIC |
358 | # undef EV_USE_MONOTONIC |
350 | # define EV_USE_MONOTONIC 0 |
359 | # define EV_USE_MONOTONIC 0 |
351 | #endif |
360 | #endif |
352 | |
361 | |
… | |
… | |
395 | # endif |
404 | # endif |
396 | # endif |
405 | # endif |
397 | # ifdef __cplusplus |
406 | # ifdef __cplusplus |
398 | extern "C" { |
407 | extern "C" { |
399 | # endif |
408 | # endif |
400 | int eventfd (unsigned int initval, int flags); |
409 | int (eventfd) (unsigned int initval, int flags); |
401 | # ifdef __cplusplus |
410 | # ifdef __cplusplus |
402 | } |
411 | } |
403 | # endif |
412 | # endif |
404 | #endif |
413 | #endif |
405 | |
414 | |
… | |
… | |
504 | |
513 | |
505 | #ifndef EV_FD_TO_WIN32_HANDLE |
514 | #ifndef EV_FD_TO_WIN32_HANDLE |
506 | # define EV_FD_TO_WIN32_HANDLE(fd) _get_osfhandle (fd) |
515 | # define EV_FD_TO_WIN32_HANDLE(fd) _get_osfhandle (fd) |
507 | #endif |
516 | #endif |
508 | #ifndef EV_WIN32_HANDLE_TO_FD |
517 | #ifndef EV_WIN32_HANDLE_TO_FD |
509 | # define EV_WIN32_HANDLE_TO_FD(handle) _open_osfhandle (fd, 0) |
518 | # define EV_WIN32_HANDLE_TO_FD(handle) _open_osfhandle (handle, 0) |
510 | #endif |
519 | #endif |
511 | #ifndef EV_WIN32_CLOSE_FD |
520 | #ifndef EV_WIN32_CLOSE_FD |
512 | # define EV_WIN32_CLOSE_FD(fd) close (fd) |
521 | # define EV_WIN32_CLOSE_FD(fd) close (fd) |
513 | #endif |
522 | #endif |
514 | |
523 | |
515 | #ifdef _WIN32 |
524 | #ifdef _WIN32 |
516 | # include "ev_win32.c" |
525 | # include "ev_win32.c" |
517 | #endif |
526 | #endif |
518 | |
527 | |
519 | /*****************************************************************************/ |
528 | /*****************************************************************************/ |
|
|
529 | |
|
|
530 | #if EV_AVOID_STDIO |
|
|
531 | static void noinline |
|
|
532 | ev_printerr (const char *msg) |
|
|
533 | { |
|
|
534 | write (STDERR_FILENO, msg, strlen (msg)); |
|
|
535 | } |
|
|
536 | #endif |
520 | |
537 | |
521 | static void (*syserr_cb)(const char *msg); |
538 | static void (*syserr_cb)(const char *msg); |
522 | |
539 | |
523 | void |
540 | void |
524 | ev_set_syserr_cb (void (*cb)(const char *msg)) |
541 | ev_set_syserr_cb (void (*cb)(const char *msg)) |
… | |
… | |
534 | |
551 | |
535 | if (syserr_cb) |
552 | if (syserr_cb) |
536 | syserr_cb (msg); |
553 | syserr_cb (msg); |
537 | else |
554 | else |
538 | { |
555 | { |
|
|
556 | #if EV_AVOID_STDIO |
|
|
557 | const char *err = strerror (errno); |
|
|
558 | |
|
|
559 | ev_printerr (msg); |
|
|
560 | ev_printerr (": "); |
|
|
561 | ev_printerr (err); |
|
|
562 | ev_printerr ("\n"); |
|
|
563 | #else |
539 | perror (msg); |
564 | perror (msg); |
|
|
565 | #endif |
540 | abort (); |
566 | abort (); |
541 | } |
567 | } |
542 | } |
568 | } |
543 | |
569 | |
544 | static void * |
570 | static void * |
545 | ev_realloc_emul (void *ptr, long size) |
571 | ev_realloc_emul (void *ptr, long size) |
546 | { |
572 | { |
|
|
573 | #if __GLIBC__ |
|
|
574 | return realloc (ptr, size); |
|
|
575 | #else |
547 | /* some systems, notably openbsd and darwin, fail to properly |
576 | /* some systems, notably openbsd and darwin, fail to properly |
548 | * implement realloc (x, 0) (as required by both ansi c-98 and |
577 | * implement realloc (x, 0) (as required by both ansi c-98 and |
549 | * the single unix specification, so work around them here. |
578 | * the single unix specification, so work around them here. |
550 | */ |
579 | */ |
551 | |
580 | |
552 | if (size) |
581 | if (size) |
553 | return realloc (ptr, size); |
582 | return realloc (ptr, size); |
554 | |
583 | |
555 | free (ptr); |
584 | free (ptr); |
556 | return 0; |
585 | return 0; |
|
|
586 | #endif |
557 | } |
587 | } |
558 | |
588 | |
559 | static void *(*alloc)(void *ptr, long size) = ev_realloc_emul; |
589 | static void *(*alloc)(void *ptr, long size) = ev_realloc_emul; |
560 | |
590 | |
561 | void |
591 | void |
… | |
… | |
569 | { |
599 | { |
570 | ptr = alloc (ptr, size); |
600 | ptr = alloc (ptr, size); |
571 | |
601 | |
572 | if (!ptr && size) |
602 | if (!ptr && size) |
573 | { |
603 | { |
|
|
604 | #if EV_AVOID_STDIO |
|
|
605 | ev_printerr ("libev: memory allocation failed, aborting.\n"); |
|
|
606 | #else |
574 | fprintf (stderr, "libev: cannot allocate %ld bytes, aborting.", size); |
607 | fprintf (stderr, "libev: cannot allocate %ld bytes, aborting.", size); |
|
|
608 | #endif |
575 | abort (); |
609 | abort (); |
576 | } |
610 | } |
577 | |
611 | |
578 | return ptr; |
612 | return ptr; |
579 | } |
613 | } |
… | |
… | |
963 | /* check whether the given fd is atcually valid, for error recovery */ |
997 | /* check whether the given fd is atcually valid, for error recovery */ |
964 | inline_size int |
998 | inline_size int |
965 | fd_valid (int fd) |
999 | fd_valid (int fd) |
966 | { |
1000 | { |
967 | #ifdef _WIN32 |
1001 | #ifdef _WIN32 |
968 | return _get_osfhandle (fd) != -1; |
1002 | return EV_FD_TO_WIN32_HANDLE (fd) != -1; |
969 | #else |
1003 | #else |
970 | return fcntl (fd, F_GETFD) != -1; |
1004 | return fcntl (fd, F_GETFD) != -1; |
971 | #endif |
1005 | #endif |
972 | } |
1006 | } |
973 | |
1007 | |
… | |
… | |
1178 | inline_speed void |
1212 | inline_speed void |
1179 | fd_intern (int fd) |
1213 | fd_intern (int fd) |
1180 | { |
1214 | { |
1181 | #ifdef _WIN32 |
1215 | #ifdef _WIN32 |
1182 | unsigned long arg = 1; |
1216 | unsigned long arg = 1; |
1183 | ioctlsocket (_get_osfhandle (fd), FIONBIO, &arg); |
1217 | ioctlsocket (EV_FD_TO_WIN32_HANDLE (fd), FIONBIO, &arg); |
1184 | #else |
1218 | #else |
1185 | fcntl (fd, F_SETFD, FD_CLOEXEC); |
1219 | fcntl (fd, F_SETFD, FD_CLOEXEC); |
1186 | fcntl (fd, F_SETFL, O_NONBLOCK); |
1220 | fcntl (fd, F_SETFL, O_NONBLOCK); |
1187 | #endif |
1221 | #endif |
1188 | } |
1222 | } |
… | |
… | |
1293 | { |
1327 | { |
1294 | #if EV_MULTIPLICITY |
1328 | #if EV_MULTIPLICITY |
1295 | EV_P = signals [signum - 1].loop; |
1329 | EV_P = signals [signum - 1].loop; |
1296 | #endif |
1330 | #endif |
1297 | |
1331 | |
1298 | #if _WIN32 |
1332 | #ifdef _WIN32 |
1299 | signal (signum, ev_sighandler); |
1333 | signal (signum, ev_sighandler); |
1300 | #endif |
1334 | #endif |
1301 | |
1335 | |
1302 | signals [signum - 1].pending = 1; |
1336 | signals [signum - 1].pending = 1; |
1303 | evpipe_write (EV_A_ &sig_pending); |
1337 | evpipe_write (EV_A_ &sig_pending); |
… | |
… | |
1604 | #endif |
1638 | #endif |
1605 | #if EV_USE_INOTIFY |
1639 | #if EV_USE_INOTIFY |
1606 | fs_fd = flags & EVFLAG_NOINOTIFY ? -1 : -2; |
1640 | fs_fd = flags & EVFLAG_NOINOTIFY ? -1 : -2; |
1607 | #endif |
1641 | #endif |
1608 | #if EV_USE_SIGNALFD |
1642 | #if EV_USE_SIGNALFD |
1609 | sigfd = flags & EVFLAG_NOSIGFD ? -1 : -2; |
1643 | sigfd = flags & EVFLAG_SIGNALFD ? -2 : -1; |
1610 | #endif |
1644 | #endif |
1611 | |
1645 | |
1612 | if (!(flags & 0x0000ffffU)) |
1646 | if (!(flags & 0x0000ffffU)) |
1613 | flags |= ev_recommended_backends (); |
1647 | flags |= ev_recommended_backends (); |
1614 | |
1648 | |
… | |
… | |
2156 | ANHE_at_cache (*he); |
2190 | ANHE_at_cache (*he); |
2157 | } |
2191 | } |
2158 | } |
2192 | } |
2159 | |
2193 | |
2160 | /* fetch new monotonic and realtime times from the kernel */ |
2194 | /* fetch new monotonic and realtime times from the kernel */ |
2161 | /* also detetc if there was a timejump, and act accordingly */ |
2195 | /* also detect if there was a timejump, and act accordingly */ |
2162 | inline_speed void |
2196 | inline_speed void |
2163 | time_update (EV_P_ ev_tstamp max_block) |
2197 | time_update (EV_P_ ev_tstamp max_block) |
2164 | { |
2198 | { |
2165 | #if EV_USE_MONOTONIC |
2199 | #if EV_USE_MONOTONIC |
2166 | if (expect_true (have_monotonic)) |
2200 | if (expect_true (have_monotonic)) |
… | |
… | |
2500 | |
2534 | |
2501 | if (expect_false (ev_is_active (w))) |
2535 | if (expect_false (ev_is_active (w))) |
2502 | return; |
2536 | return; |
2503 | |
2537 | |
2504 | assert (("libev: ev_io_start called with negative fd", fd >= 0)); |
2538 | assert (("libev: ev_io_start called with negative fd", fd >= 0)); |
2505 | assert (("libev: ev_io start called with illegal event mask", !(w->events & ~(EV__IOFDSET | EV_READ | EV_WRITE)))); |
2539 | assert (("libev: ev_io_start called with illegal event mask", !(w->events & ~(EV__IOFDSET | EV_READ | EV_WRITE)))); |
2506 | |
2540 | |
2507 | EV_FREQUENT_CHECK; |
2541 | EV_FREQUENT_CHECK; |
2508 | |
2542 | |
2509 | ev_start (EV_A_ (W)w, 1); |
2543 | ev_start (EV_A_ (W)w, 1); |
2510 | array_needsize (ANFD, anfds, anfdmax, fd + 1, array_init_zero); |
2544 | array_needsize (ANFD, anfds, anfdmax, fd + 1, array_init_zero); |
… | |
… | |
2580 | timers [active] = timers [timercnt + HEAP0]; |
2614 | timers [active] = timers [timercnt + HEAP0]; |
2581 | adjustheap (timers, timercnt, active); |
2615 | adjustheap (timers, timercnt, active); |
2582 | } |
2616 | } |
2583 | } |
2617 | } |
2584 | |
2618 | |
2585 | EV_FREQUENT_CHECK; |
|
|
2586 | |
|
|
2587 | ev_at (w) -= mn_now; |
2619 | ev_at (w) -= mn_now; |
2588 | |
2620 | |
2589 | ev_stop (EV_A_ (W)w); |
2621 | ev_stop (EV_A_ (W)w); |
|
|
2622 | |
|
|
2623 | EV_FREQUENT_CHECK; |
2590 | } |
2624 | } |
2591 | |
2625 | |
2592 | void noinline |
2626 | void noinline |
2593 | ev_timer_again (EV_P_ ev_timer *w) |
2627 | ev_timer_again (EV_P_ ev_timer *w) |
2594 | { |
2628 | { |
… | |
… | |
2673 | periodics [active] = periodics [periodiccnt + HEAP0]; |
2707 | periodics [active] = periodics [periodiccnt + HEAP0]; |
2674 | adjustheap (periodics, periodiccnt, active); |
2708 | adjustheap (periodics, periodiccnt, active); |
2675 | } |
2709 | } |
2676 | } |
2710 | } |
2677 | |
2711 | |
2678 | EV_FREQUENT_CHECK; |
|
|
2679 | |
|
|
2680 | ev_stop (EV_A_ (W)w); |
2712 | ev_stop (EV_A_ (W)w); |
|
|
2713 | |
|
|
2714 | EV_FREQUENT_CHECK; |
2681 | } |
2715 | } |
2682 | |
2716 | |
2683 | void noinline |
2717 | void noinline |
2684 | ev_periodic_again (EV_P_ ev_periodic *w) |
2718 | ev_periodic_again (EV_P_ ev_periodic *w) |
2685 | { |
2719 | { |
… | |
… | |
2746 | if (!((WL)w)->next) |
2780 | if (!((WL)w)->next) |
2747 | # if EV_USE_SIGNALFD |
2781 | # if EV_USE_SIGNALFD |
2748 | if (sigfd < 0) /*TODO*/ |
2782 | if (sigfd < 0) /*TODO*/ |
2749 | # endif |
2783 | # endif |
2750 | { |
2784 | { |
2751 | # if _WIN32 |
2785 | # ifdef _WIN32 |
2752 | evpipe_init (EV_A); |
2786 | evpipe_init (EV_A); |
2753 | |
2787 | |
2754 | signal (w->signum, ev_sighandler); |
2788 | signal (w->signum, ev_sighandler); |
2755 | # else |
2789 | # else |
2756 | struct sigaction sa; |
2790 | struct sigaction sa; |
… | |
… | |
2789 | signals [w->signum - 1].loop = 0; /* unattach from signal */ |
2823 | signals [w->signum - 1].loop = 0; /* unattach from signal */ |
2790 | #endif |
2824 | #endif |
2791 | #if EV_USE_SIGNALFD |
2825 | #if EV_USE_SIGNALFD |
2792 | if (sigfd >= 0) |
2826 | if (sigfd >= 0) |
2793 | { |
2827 | { |
2794 | sigprocmask (SIG_UNBLOCK, &sigfd_set, 0);//D |
2828 | sigset_t ss; |
|
|
2829 | |
|
|
2830 | sigemptyset (&ss); |
|
|
2831 | sigaddset (&ss, w->signum); |
2795 | sigdelset (&sigfd_set, w->signum); |
2832 | sigdelset (&sigfd_set, w->signum); |
|
|
2833 | |
2796 | signalfd (sigfd, &sigfd_set, 0); |
2834 | signalfd (sigfd, &sigfd_set, 0); |
2797 | sigprocmask (SIG_BLOCK, &sigfd_set, 0);//D |
2835 | sigprocmask (SIG_UNBLOCK, &ss, 0); |
2798 | /*TODO: maybe unblock signal? */ |
|
|
2799 | } |
2836 | } |
2800 | else |
2837 | else |
2801 | #endif |
2838 | #endif |
2802 | signal (w->signum, SIG_DFL); |
2839 | signal (w->signum, SIG_DFL); |
2803 | } |
2840 | } |
… | |
… | |
2849 | #define MIN_STAT_INTERVAL 0.1074891 |
2886 | #define MIN_STAT_INTERVAL 0.1074891 |
2850 | |
2887 | |
2851 | static void noinline stat_timer_cb (EV_P_ ev_timer *w_, int revents); |
2888 | static void noinline stat_timer_cb (EV_P_ ev_timer *w_, int revents); |
2852 | |
2889 | |
2853 | #if EV_USE_INOTIFY |
2890 | #if EV_USE_INOTIFY |
2854 | # define EV_INOTIFY_BUFSIZE 8192 |
2891 | |
|
|
2892 | /* the * 2 is to allow for alignment padding, which for some reason is >> 8 */ |
|
|
2893 | # define EV_INOTIFY_BUFSIZE (sizeof (struct inotify_event) * 2 + NAME_MAX) |
2855 | |
2894 | |
2856 | static void noinline |
2895 | static void noinline |
2857 | infy_add (EV_P_ ev_stat *w) |
2896 | infy_add (EV_P_ ev_stat *w) |
2858 | { |
2897 | { |
2859 | 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); |
2898 | 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); |
2860 | |
2899 | |
2861 | if (w->wd < 0) |
2900 | if (w->wd >= 0) |
|
|
2901 | { |
|
|
2902 | struct statfs sfs; |
|
|
2903 | |
|
|
2904 | /* now local changes will be tracked by inotify, but remote changes won't */ |
|
|
2905 | /* unless the filesystem is known to be local, we therefore still poll */ |
|
|
2906 | /* also do poll on <2.6.25, but with normal frequency */ |
|
|
2907 | |
|
|
2908 | if (!fs_2625) |
|
|
2909 | w->timer.repeat = w->interval ? w->interval : DEF_STAT_INTERVAL; |
|
|
2910 | else if (!statfs (w->path, &sfs) |
|
|
2911 | && (sfs.f_type == 0x1373 /* devfs */ |
|
|
2912 | || sfs.f_type == 0xEF53 /* ext2/3 */ |
|
|
2913 | || sfs.f_type == 0x3153464a /* jfs */ |
|
|
2914 | || sfs.f_type == 0x52654973 /* reiser3 */ |
|
|
2915 | || sfs.f_type == 0x01021994 /* tempfs */ |
|
|
2916 | || sfs.f_type == 0x58465342 /* xfs */)) |
|
|
2917 | w->timer.repeat = 0.; /* filesystem is local, kernel new enough */ |
|
|
2918 | else |
|
|
2919 | w->timer.repeat = w->interval ? w->interval : NFS_STAT_INTERVAL; /* remote, use reduced frequency */ |
2862 | { |
2920 | } |
|
|
2921 | else |
|
|
2922 | { |
|
|
2923 | /* can't use inotify, continue to stat */ |
2863 | w->timer.repeat = w->interval ? w->interval : DEF_STAT_INTERVAL; |
2924 | w->timer.repeat = w->interval ? w->interval : DEF_STAT_INTERVAL; |
2864 | ev_timer_again (EV_A_ &w->timer); /* this is not race-free, so we still need to recheck periodically */ |
|
|
2865 | |
2925 | |
2866 | /* monitor some parent directory for speedup hints */ |
2926 | /* if path is not there, monitor some parent directory for speedup hints */ |
2867 | /* note that exceeding the hardcoded path limit is not a correctness issue, */ |
2927 | /* note that exceeding the hardcoded path limit is not a correctness issue, */ |
2868 | /* but an efficiency issue only */ |
2928 | /* but an efficiency issue only */ |
2869 | if ((errno == ENOENT || errno == EACCES) && strlen (w->path) < 4096) |
2929 | if ((errno == ENOENT || errno == EACCES) && strlen (w->path) < 4096) |
2870 | { |
2930 | { |
2871 | char path [4096]; |
2931 | char path [4096]; |
… | |
… | |
2887 | while (w->wd < 0 && (errno == ENOENT || errno == EACCES)); |
2947 | while (w->wd < 0 && (errno == ENOENT || errno == EACCES)); |
2888 | } |
2948 | } |
2889 | } |
2949 | } |
2890 | |
2950 | |
2891 | if (w->wd >= 0) |
2951 | if (w->wd >= 0) |
2892 | { |
|
|
2893 | struct statfs sfs; |
|
|
2894 | |
|
|
2895 | wlist_add (&fs_hash [w->wd & (EV_INOTIFY_HASHSIZE - 1)].head, (WL)w); |
2952 | wlist_add (&fs_hash [w->wd & (EV_INOTIFY_HASHSIZE - 1)].head, (WL)w); |
2896 | |
2953 | |
2897 | /* now local changes will be tracked by inotify, but remote changes won't */ |
2954 | /* now re-arm timer, if required */ |
2898 | /* unless the filesystem is known to be local, we therefore still poll */ |
2955 | if (ev_is_active (&w->timer)) ev_ref (EV_A); |
2899 | /* also do poll on <2.6.25, but with normal frequency */ |
|
|
2900 | |
|
|
2901 | if (fs_2625 && !statfs (w->path, &sfs)) |
|
|
2902 | if (sfs.f_type == 0x1373 /* devfs */ |
|
|
2903 | || sfs.f_type == 0xEF53 /* ext2/3 */ |
|
|
2904 | || sfs.f_type == 0x3153464a /* jfs */ |
|
|
2905 | || sfs.f_type == 0x52654973 /* reiser3 */ |
|
|
2906 | || sfs.f_type == 0x01021994 /* tempfs */ |
|
|
2907 | || sfs.f_type == 0x58465342 /* xfs */) |
|
|
2908 | return; |
|
|
2909 | |
|
|
2910 | w->timer.repeat = w->interval ? w->interval : fs_2625 ? NFS_STAT_INTERVAL : DEF_STAT_INTERVAL; |
|
|
2911 | ev_timer_again (EV_A_ &w->timer); |
2956 | ev_timer_again (EV_A_ &w->timer); |
2912 | } |
2957 | if (ev_is_active (&w->timer)) ev_unref (EV_A); |
2913 | } |
2958 | } |
2914 | |
2959 | |
2915 | static void noinline |
2960 | static void noinline |
2916 | infy_del (EV_P_ ev_stat *w) |
2961 | infy_del (EV_P_ ev_stat *w) |
2917 | { |
2962 | { |
… | |
… | |
2962 | |
3007 | |
2963 | static void |
3008 | static void |
2964 | infy_cb (EV_P_ ev_io *w, int revents) |
3009 | infy_cb (EV_P_ ev_io *w, int revents) |
2965 | { |
3010 | { |
2966 | char buf [EV_INOTIFY_BUFSIZE]; |
3011 | char buf [EV_INOTIFY_BUFSIZE]; |
2967 | struct inotify_event *ev = (struct inotify_event *)buf; |
|
|
2968 | int ofs; |
3012 | int ofs; |
2969 | int len = read (fs_fd, buf, sizeof (buf)); |
3013 | int len = read (fs_fd, buf, sizeof (buf)); |
2970 | |
3014 | |
2971 | for (ofs = 0; ofs < len; ofs += sizeof (struct inotify_event) + ev->len) |
3015 | for (ofs = 0; ofs < len; ) |
|
|
3016 | { |
|
|
3017 | struct inotify_event *ev = (struct inotify_event *)(buf + ofs); |
2972 | infy_wd (EV_A_ ev->wd, ev->wd, ev); |
3018 | infy_wd (EV_A_ ev->wd, ev->wd, ev); |
|
|
3019 | ofs += sizeof (struct inotify_event) + ev->len; |
|
|
3020 | } |
|
|
3021 | } |
|
|
3022 | |
|
|
3023 | inline_size unsigned int |
|
|
3024 | ev_linux_version (void) |
|
|
3025 | { |
|
|
3026 | struct utsname buf; |
|
|
3027 | unsigned int v; |
|
|
3028 | int i; |
|
|
3029 | char *p = buf.release; |
|
|
3030 | |
|
|
3031 | if (uname (&buf)) |
|
|
3032 | return 0; |
|
|
3033 | |
|
|
3034 | for (i = 3+1; --i; ) |
|
|
3035 | { |
|
|
3036 | unsigned int c = 0; |
|
|
3037 | |
|
|
3038 | for (;;) |
|
|
3039 | { |
|
|
3040 | if (*p >= '0' && *p <= '9') |
|
|
3041 | c = c * 10 + *p++ - '0'; |
|
|
3042 | else |
|
|
3043 | { |
|
|
3044 | p += *p == '.'; |
|
|
3045 | break; |
|
|
3046 | } |
|
|
3047 | } |
|
|
3048 | |
|
|
3049 | v = (v << 8) | c; |
|
|
3050 | } |
|
|
3051 | |
|
|
3052 | return v; |
2973 | } |
3053 | } |
2974 | |
3054 | |
2975 | inline_size void |
3055 | inline_size void |
2976 | check_2625 (EV_P) |
3056 | ev_check_2625 (EV_P) |
2977 | { |
3057 | { |
2978 | /* kernels < 2.6.25 are borked |
3058 | /* kernels < 2.6.25 are borked |
2979 | * http://www.ussg.indiana.edu/hypermail/linux/kernel/0711.3/1208.html |
3059 | * http://www.ussg.indiana.edu/hypermail/linux/kernel/0711.3/1208.html |
2980 | */ |
3060 | */ |
2981 | struct utsname buf; |
3061 | if (ev_linux_version () < 0x020619) |
2982 | int major, minor, micro; |
|
|
2983 | |
|
|
2984 | if (uname (&buf)) |
|
|
2985 | return; |
|
|
2986 | |
|
|
2987 | if (sscanf (buf.release, "%d.%d.%d", &major, &minor, µ) != 3) |
|
|
2988 | return; |
|
|
2989 | |
|
|
2990 | if (major < 2 |
|
|
2991 | || (major == 2 && minor < 6) |
|
|
2992 | || (major == 2 && minor == 6 && micro < 25)) |
|
|
2993 | return; |
3062 | return; |
2994 | |
3063 | |
2995 | fs_2625 = 1; |
3064 | fs_2625 = 1; |
2996 | } |
3065 | } |
2997 | |
3066 | |
… | |
… | |
3012 | if (fs_fd != -2) |
3081 | if (fs_fd != -2) |
3013 | return; |
3082 | return; |
3014 | |
3083 | |
3015 | fs_fd = -1; |
3084 | fs_fd = -1; |
3016 | |
3085 | |
3017 | check_2625 (EV_A); |
3086 | ev_check_2625 (EV_A); |
3018 | |
3087 | |
3019 | fs_fd = infy_newfd (); |
3088 | fs_fd = infy_newfd (); |
3020 | |
3089 | |
3021 | if (fs_fd >= 0) |
3090 | if (fs_fd >= 0) |
3022 | { |
3091 | { |
… | |
… | |
3062 | w->wd = -1; |
3131 | w->wd = -1; |
3063 | |
3132 | |
3064 | if (fs_fd >= 0) |
3133 | if (fs_fd >= 0) |
3065 | infy_add (EV_A_ w); /* re-add, no matter what */ |
3134 | infy_add (EV_A_ w); /* re-add, no matter what */ |
3066 | else |
3135 | else |
|
|
3136 | { |
|
|
3137 | w->timer.repeat = w->interval ? w->interval : DEF_STAT_INTERVAL; |
|
|
3138 | if (ev_is_active (&w->timer)) ev_ref (EV_A); |
3067 | ev_timer_again (EV_A_ &w->timer); |
3139 | ev_timer_again (EV_A_ &w->timer); |
|
|
3140 | if (ev_is_active (&w->timer)) ev_unref (EV_A); |
|
|
3141 | } |
3068 | } |
3142 | } |
3069 | } |
3143 | } |
3070 | } |
3144 | } |
3071 | |
3145 | |
3072 | #endif |
3146 | #endif |
… | |
… | |
3089 | static void noinline |
3163 | static void noinline |
3090 | stat_timer_cb (EV_P_ ev_timer *w_, int revents) |
3164 | stat_timer_cb (EV_P_ ev_timer *w_, int revents) |
3091 | { |
3165 | { |
3092 | ev_stat *w = (ev_stat *)(((char *)w_) - offsetof (ev_stat, timer)); |
3166 | ev_stat *w = (ev_stat *)(((char *)w_) - offsetof (ev_stat, timer)); |
3093 | |
3167 | |
3094 | /* we copy this here each the time so that */ |
3168 | ev_statdata prev = w->attr; |
3095 | /* prev has the old value when the callback gets invoked */ |
|
|
3096 | w->prev = w->attr; |
|
|
3097 | ev_stat_stat (EV_A_ w); |
3169 | ev_stat_stat (EV_A_ w); |
3098 | |
3170 | |
3099 | /* memcmp doesn't work on netbsd, they.... do stuff to their struct stat */ |
3171 | /* memcmp doesn't work on netbsd, they.... do stuff to their struct stat */ |
3100 | if ( |
3172 | if ( |
3101 | w->prev.st_dev != w->attr.st_dev |
3173 | prev.st_dev != w->attr.st_dev |
3102 | || w->prev.st_ino != w->attr.st_ino |
3174 | || prev.st_ino != w->attr.st_ino |
3103 | || w->prev.st_mode != w->attr.st_mode |
3175 | || prev.st_mode != w->attr.st_mode |
3104 | || w->prev.st_nlink != w->attr.st_nlink |
3176 | || prev.st_nlink != w->attr.st_nlink |
3105 | || w->prev.st_uid != w->attr.st_uid |
3177 | || prev.st_uid != w->attr.st_uid |
3106 | || w->prev.st_gid != w->attr.st_gid |
3178 | || prev.st_gid != w->attr.st_gid |
3107 | || w->prev.st_rdev != w->attr.st_rdev |
3179 | || prev.st_rdev != w->attr.st_rdev |
3108 | || w->prev.st_size != w->attr.st_size |
3180 | || prev.st_size != w->attr.st_size |
3109 | || w->prev.st_atime != w->attr.st_atime |
3181 | || prev.st_atime != w->attr.st_atime |
3110 | || w->prev.st_mtime != w->attr.st_mtime |
3182 | || prev.st_mtime != w->attr.st_mtime |
3111 | || w->prev.st_ctime != w->attr.st_ctime |
3183 | || prev.st_ctime != w->attr.st_ctime |
3112 | ) { |
3184 | ) { |
|
|
3185 | /* we only update w->prev on actual differences */ |
|
|
3186 | /* in case we test more often than invoke the callback, */ |
|
|
3187 | /* to ensure that prev is always different to attr */ |
|
|
3188 | w->prev = prev; |
|
|
3189 | |
3113 | #if EV_USE_INOTIFY |
3190 | #if EV_USE_INOTIFY |
3114 | if (fs_fd >= 0) |
3191 | if (fs_fd >= 0) |
3115 | { |
3192 | { |
3116 | infy_del (EV_A_ w); |
3193 | infy_del (EV_A_ w); |
3117 | infy_add (EV_A_ w); |
3194 | infy_add (EV_A_ w); |
… | |
… | |
3142 | |
3219 | |
3143 | if (fs_fd >= 0) |
3220 | if (fs_fd >= 0) |
3144 | infy_add (EV_A_ w); |
3221 | infy_add (EV_A_ w); |
3145 | else |
3222 | else |
3146 | #endif |
3223 | #endif |
|
|
3224 | { |
3147 | ev_timer_again (EV_A_ &w->timer); |
3225 | ev_timer_again (EV_A_ &w->timer); |
|
|
3226 | ev_unref (EV_A); |
|
|
3227 | } |
3148 | |
3228 | |
3149 | ev_start (EV_A_ (W)w, 1); |
3229 | ev_start (EV_A_ (W)w, 1); |
3150 | |
3230 | |
3151 | EV_FREQUENT_CHECK; |
3231 | EV_FREQUENT_CHECK; |
3152 | } |
3232 | } |
… | |
… | |
3161 | EV_FREQUENT_CHECK; |
3241 | EV_FREQUENT_CHECK; |
3162 | |
3242 | |
3163 | #if EV_USE_INOTIFY |
3243 | #if EV_USE_INOTIFY |
3164 | infy_del (EV_A_ w); |
3244 | infy_del (EV_A_ w); |
3165 | #endif |
3245 | #endif |
|
|
3246 | |
|
|
3247 | if (ev_is_active (&w->timer)) |
|
|
3248 | { |
|
|
3249 | ev_ref (EV_A); |
3166 | ev_timer_stop (EV_A_ &w->timer); |
3250 | ev_timer_stop (EV_A_ &w->timer); |
|
|
3251 | } |
3167 | |
3252 | |
3168 | ev_stop (EV_A_ (W)w); |
3253 | ev_stop (EV_A_ (W)w); |
3169 | |
3254 | |
3170 | EV_FREQUENT_CHECK; |
3255 | EV_FREQUENT_CHECK; |
3171 | } |
3256 | } |
… | |
… | |
3390 | EV_FREQUENT_CHECK; |
3475 | EV_FREQUENT_CHECK; |
3391 | |
3476 | |
3392 | ev_io_stop (EV_A_ &w->io); |
3477 | ev_io_stop (EV_A_ &w->io); |
3393 | ev_prepare_stop (EV_A_ &w->prepare); |
3478 | ev_prepare_stop (EV_A_ &w->prepare); |
3394 | ev_fork_stop (EV_A_ &w->fork); |
3479 | ev_fork_stop (EV_A_ &w->fork); |
|
|
3480 | |
|
|
3481 | ev_stop (EV_A_ (W)w); |
3395 | |
3482 | |
3396 | EV_FREQUENT_CHECK; |
3483 | EV_FREQUENT_CHECK; |
3397 | } |
3484 | } |
3398 | #endif |
3485 | #endif |
3399 | |
3486 | |