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 |
… | |
… | |
302 | # define EV_USE_EVENTFD 0 |
304 | # define EV_USE_EVENTFD 0 |
303 | # endif |
305 | # endif |
304 | #endif |
306 | #endif |
305 | |
307 | |
306 | #ifndef EV_USE_SIGNALFD |
308 | #ifndef EV_USE_SIGNALFD |
307 | # if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 9)) |
309 | # if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 7)) |
308 | # define EV_USE_SIGNALFD 1 |
310 | # define EV_USE_SIGNALFD 1 |
309 | # else |
311 | # else |
310 | # define EV_USE_SIGNALFD 0 |
312 | # define EV_USE_SIGNALFD 0 |
311 | # endif |
313 | # endif |
312 | #endif |
314 | #endif |
… | |
… | |
343 | # endif |
345 | # endif |
344 | #endif |
346 | #endif |
345 | |
347 | |
346 | /* this block fixes any misconfiguration where we know we run into trouble otherwise */ |
348 | /* this block fixes any misconfiguration where we know we run into trouble otherwise */ |
347 | |
349 | |
|
|
350 | #ifdef _AIX |
|
|
351 | /* AIX has a completely broken poll.h header */ |
|
|
352 | # undef EV_USE_POLL |
|
|
353 | # define EV_USE_POLL 0 |
|
|
354 | #endif |
|
|
355 | |
348 | #ifndef CLOCK_MONOTONIC |
356 | #ifndef CLOCK_MONOTONIC |
349 | # undef EV_USE_MONOTONIC |
357 | # undef EV_USE_MONOTONIC |
350 | # define EV_USE_MONOTONIC 0 |
358 | # define EV_USE_MONOTONIC 0 |
351 | #endif |
359 | #endif |
352 | |
360 | |
… | |
… | |
395 | # endif |
403 | # endif |
396 | # endif |
404 | # endif |
397 | # ifdef __cplusplus |
405 | # ifdef __cplusplus |
398 | extern "C" { |
406 | extern "C" { |
399 | # endif |
407 | # endif |
400 | int eventfd (unsigned int initval, int flags); |
408 | int (eventfd) (unsigned int initval, int flags); |
401 | # ifdef __cplusplus |
409 | # ifdef __cplusplus |
402 | } |
410 | } |
403 | # endif |
411 | # endif |
404 | #endif |
412 | #endif |
405 | |
413 | |
406 | #if EV_USE_SIGNALFD |
414 | #if EV_USE_SIGNALFD |
407 | # include <sys/signalfd.h> |
415 | /* our minimum requirement is glibc 2.7 which has the stub, but not the header */ |
|
|
416 | # include <stdint.h> |
|
|
417 | # ifndef SFD_NONBLOCK |
|
|
418 | # define SFD_NONBLOCK O_NONBLOCK |
408 | #endif |
419 | # endif |
|
|
420 | # ifndef SFD_CLOEXEC |
|
|
421 | # ifdef O_CLOEXEC |
|
|
422 | # define SFD_CLOEXEC O_CLOEXEC |
|
|
423 | # else |
|
|
424 | # define SFD_CLOEXEC 02000000 |
|
|
425 | # endif |
|
|
426 | # endif |
|
|
427 | # ifdef __cplusplus |
|
|
428 | extern "C" { |
|
|
429 | # endif |
|
|
430 | int signalfd (int fd, const sigset_t *mask, int flags); |
|
|
431 | |
|
|
432 | struct signalfd_siginfo |
|
|
433 | { |
|
|
434 | uint32_t ssi_signo; |
|
|
435 | char pad[128 - sizeof (uint32_t)]; |
|
|
436 | }; |
|
|
437 | # ifdef __cplusplus |
|
|
438 | } |
|
|
439 | # endif |
|
|
440 | #endif |
|
|
441 | |
409 | |
442 | |
410 | /**/ |
443 | /**/ |
411 | |
444 | |
412 | #if EV_VERIFY >= 3 |
445 | #if EV_VERIFY >= 3 |
413 | # define EV_FREQUENT_CHECK ev_loop_verify (EV_A) |
446 | # define EV_FREQUENT_CHECK ev_loop_verify (EV_A) |
… | |
… | |
425 | */ |
458 | */ |
426 | #define TIME_EPSILON 0.0001220703125 /* 1/8192 */ |
459 | #define TIME_EPSILON 0.0001220703125 /* 1/8192 */ |
427 | |
460 | |
428 | #define MIN_TIMEJUMP 1. /* minimum timejump that gets detected (if monotonic clock available) */ |
461 | #define MIN_TIMEJUMP 1. /* minimum timejump that gets detected (if monotonic clock available) */ |
429 | #define MAX_BLOCKTIME 59.743 /* never wait longer than this time (to detect time jumps) */ |
462 | #define MAX_BLOCKTIME 59.743 /* never wait longer than this time (to detect time jumps) */ |
430 | /*#define CLEANUP_INTERVAL (MAX_BLOCKTIME * 5.) /* how often to try to free memory and re-check fds, TODO */ |
|
|
431 | |
463 | |
432 | #if __GNUC__ >= 4 |
464 | #if __GNUC__ >= 4 |
433 | # define expect(expr,value) __builtin_expect ((expr),(value)) |
465 | # define expect(expr,value) __builtin_expect ((expr),(value)) |
434 | # define noinline __attribute__ ((noinline)) |
466 | # define noinline __attribute__ ((noinline)) |
435 | #else |
467 | #else |
… | |
… | |
480 | |
512 | |
481 | #ifndef EV_FD_TO_WIN32_HANDLE |
513 | #ifndef EV_FD_TO_WIN32_HANDLE |
482 | # define EV_FD_TO_WIN32_HANDLE(fd) _get_osfhandle (fd) |
514 | # define EV_FD_TO_WIN32_HANDLE(fd) _get_osfhandle (fd) |
483 | #endif |
515 | #endif |
484 | #ifndef EV_WIN32_HANDLE_TO_FD |
516 | #ifndef EV_WIN32_HANDLE_TO_FD |
485 | # define EV_WIN32_HANDLE_TO_FD(handle) _open_osfhandle (fd, 0) |
517 | # define EV_WIN32_HANDLE_TO_FD(handle) _open_osfhandle (handle, 0) |
486 | #endif |
518 | #endif |
487 | #ifndef EV_WIN32_CLOSE_FD |
519 | #ifndef EV_WIN32_CLOSE_FD |
488 | # define EV_WIN32_CLOSE_FD(fd) close (fd) |
520 | # define EV_WIN32_CLOSE_FD(fd) close (fd) |
489 | #endif |
521 | #endif |
490 | |
522 | |
… | |
… | |
939 | /* check whether the given fd is atcually valid, for error recovery */ |
971 | /* check whether the given fd is atcually valid, for error recovery */ |
940 | inline_size int |
972 | inline_size int |
941 | fd_valid (int fd) |
973 | fd_valid (int fd) |
942 | { |
974 | { |
943 | #ifdef _WIN32 |
975 | #ifdef _WIN32 |
944 | return _get_osfhandle (fd) != -1; |
976 | return EV_FD_TO_WIN32_HANDLE (fd) != -1; |
945 | #else |
977 | #else |
946 | return fcntl (fd, F_GETFD) != -1; |
978 | return fcntl (fd, F_GETFD) != -1; |
947 | #endif |
979 | #endif |
948 | } |
980 | } |
949 | |
981 | |
… | |
… | |
1154 | inline_speed void |
1186 | inline_speed void |
1155 | fd_intern (int fd) |
1187 | fd_intern (int fd) |
1156 | { |
1188 | { |
1157 | #ifdef _WIN32 |
1189 | #ifdef _WIN32 |
1158 | unsigned long arg = 1; |
1190 | unsigned long arg = 1; |
1159 | ioctlsocket (_get_osfhandle (fd), FIONBIO, &arg); |
1191 | ioctlsocket (EV_FD_TO_WIN32_HANDLE (fd), FIONBIO, &arg); |
1160 | #else |
1192 | #else |
1161 | fcntl (fd, F_SETFD, FD_CLOEXEC); |
1193 | fcntl (fd, F_SETFD, FD_CLOEXEC); |
1162 | fcntl (fd, F_SETFL, O_NONBLOCK); |
1194 | fcntl (fd, F_SETFL, O_NONBLOCK); |
1163 | #endif |
1195 | #endif |
1164 | } |
1196 | } |
… | |
… | |
1269 | { |
1301 | { |
1270 | #if EV_MULTIPLICITY |
1302 | #if EV_MULTIPLICITY |
1271 | EV_P = signals [signum - 1].loop; |
1303 | EV_P = signals [signum - 1].loop; |
1272 | #endif |
1304 | #endif |
1273 | |
1305 | |
1274 | #if _WIN32 |
1306 | #ifdef _WIN32 |
1275 | signal (signum, ev_sighandler); |
1307 | signal (signum, ev_sighandler); |
1276 | #endif |
1308 | #endif |
1277 | |
1309 | |
1278 | signals [signum - 1].pending = 1; |
1310 | signals [signum - 1].pending = 1; |
1279 | evpipe_write (EV_A_ &sig_pending); |
1311 | evpipe_write (EV_A_ &sig_pending); |
… | |
… | |
1580 | #endif |
1612 | #endif |
1581 | #if EV_USE_INOTIFY |
1613 | #if EV_USE_INOTIFY |
1582 | fs_fd = flags & EVFLAG_NOINOTIFY ? -1 : -2; |
1614 | fs_fd = flags & EVFLAG_NOINOTIFY ? -1 : -2; |
1583 | #endif |
1615 | #endif |
1584 | #if EV_USE_SIGNALFD |
1616 | #if EV_USE_SIGNALFD |
1585 | sigfd = flags & EVFLAG_NOSIGFD ? -1 : -2; |
1617 | sigfd = flags & EVFLAG_SIGNALFD ? -2 : -1; |
1586 | #endif |
1618 | #endif |
1587 | |
1619 | |
1588 | if (!(flags & 0x0000ffffU)) |
1620 | if (!(flags & 0x0000ffffU)) |
1589 | flags |= ev_recommended_backends (); |
1621 | flags |= ev_recommended_backends (); |
1590 | |
1622 | |
… | |
… | |
1634 | } |
1666 | } |
1635 | } |
1667 | } |
1636 | |
1668 | |
1637 | #if EV_USE_SIGNALFD |
1669 | #if EV_USE_SIGNALFD |
1638 | if (ev_is_active (&sigfd_w)) |
1670 | if (ev_is_active (&sigfd_w)) |
1639 | { |
|
|
1640 | /*ev_ref (EV_A);*/ |
|
|
1641 | /*ev_io_stop (EV_A_ &sigfd_w);*/ |
|
|
1642 | |
|
|
1643 | close (sigfd); |
1671 | close (sigfd); |
1644 | } |
|
|
1645 | #endif |
1672 | #endif |
1646 | |
1673 | |
1647 | #if EV_USE_INOTIFY |
1674 | #if EV_USE_INOTIFY |
1648 | if (fs_fd >= 0) |
1675 | if (fs_fd >= 0) |
1649 | close (fs_fd); |
1676 | close (fs_fd); |
… | |
… | |
2137 | ANHE_at_cache (*he); |
2164 | ANHE_at_cache (*he); |
2138 | } |
2165 | } |
2139 | } |
2166 | } |
2140 | |
2167 | |
2141 | /* fetch new monotonic and realtime times from the kernel */ |
2168 | /* fetch new monotonic and realtime times from the kernel */ |
2142 | /* also detetc if there was a timejump, and act accordingly */ |
2169 | /* also detect if there was a timejump, and act accordingly */ |
2143 | inline_speed void |
2170 | inline_speed void |
2144 | time_update (EV_P_ ev_tstamp max_block) |
2171 | time_update (EV_P_ ev_tstamp max_block) |
2145 | { |
2172 | { |
2146 | #if EV_USE_MONOTONIC |
2173 | #if EV_USE_MONOTONIC |
2147 | if (expect_true (have_monotonic)) |
2174 | if (expect_true (have_monotonic)) |
… | |
… | |
2481 | |
2508 | |
2482 | if (expect_false (ev_is_active (w))) |
2509 | if (expect_false (ev_is_active (w))) |
2483 | return; |
2510 | return; |
2484 | |
2511 | |
2485 | assert (("libev: ev_io_start called with negative fd", fd >= 0)); |
2512 | assert (("libev: ev_io_start called with negative fd", fd >= 0)); |
2486 | assert (("libev: ev_io start called with illegal event mask", !(w->events & ~(EV__IOFDSET | EV_READ | EV_WRITE)))); |
2513 | assert (("libev: ev_io_start called with illegal event mask", !(w->events & ~(EV__IOFDSET | EV_READ | EV_WRITE)))); |
2487 | |
2514 | |
2488 | EV_FREQUENT_CHECK; |
2515 | EV_FREQUENT_CHECK; |
2489 | |
2516 | |
2490 | ev_start (EV_A_ (W)w, 1); |
2517 | ev_start (EV_A_ (W)w, 1); |
2491 | array_needsize (ANFD, anfds, anfdmax, fd + 1, array_init_zero); |
2518 | array_needsize (ANFD, anfds, anfdmax, fd + 1, array_init_zero); |
… | |
… | |
2561 | timers [active] = timers [timercnt + HEAP0]; |
2588 | timers [active] = timers [timercnt + HEAP0]; |
2562 | adjustheap (timers, timercnt, active); |
2589 | adjustheap (timers, timercnt, active); |
2563 | } |
2590 | } |
2564 | } |
2591 | } |
2565 | |
2592 | |
2566 | EV_FREQUENT_CHECK; |
|
|
2567 | |
|
|
2568 | ev_at (w) -= mn_now; |
2593 | ev_at (w) -= mn_now; |
2569 | |
2594 | |
2570 | ev_stop (EV_A_ (W)w); |
2595 | ev_stop (EV_A_ (W)w); |
|
|
2596 | |
|
|
2597 | EV_FREQUENT_CHECK; |
2571 | } |
2598 | } |
2572 | |
2599 | |
2573 | void noinline |
2600 | void noinline |
2574 | ev_timer_again (EV_P_ ev_timer *w) |
2601 | ev_timer_again (EV_P_ ev_timer *w) |
2575 | { |
2602 | { |
… | |
… | |
2654 | periodics [active] = periodics [periodiccnt + HEAP0]; |
2681 | periodics [active] = periodics [periodiccnt + HEAP0]; |
2655 | adjustheap (periodics, periodiccnt, active); |
2682 | adjustheap (periodics, periodiccnt, active); |
2656 | } |
2683 | } |
2657 | } |
2684 | } |
2658 | |
2685 | |
2659 | EV_FREQUENT_CHECK; |
|
|
2660 | |
|
|
2661 | ev_stop (EV_A_ (W)w); |
2686 | ev_stop (EV_A_ (W)w); |
|
|
2687 | |
|
|
2688 | EV_FREQUENT_CHECK; |
2662 | } |
2689 | } |
2663 | |
2690 | |
2664 | void noinline |
2691 | void noinline |
2665 | ev_periodic_again (EV_P_ ev_periodic *w) |
2692 | ev_periodic_again (EV_P_ ev_periodic *w) |
2666 | { |
2693 | { |
… | |
… | |
2727 | if (!((WL)w)->next) |
2754 | if (!((WL)w)->next) |
2728 | # if EV_USE_SIGNALFD |
2755 | # if EV_USE_SIGNALFD |
2729 | if (sigfd < 0) /*TODO*/ |
2756 | if (sigfd < 0) /*TODO*/ |
2730 | # endif |
2757 | # endif |
2731 | { |
2758 | { |
2732 | # if _WIN32 |
2759 | # ifdef _WIN32 |
|
|
2760 | evpipe_init (EV_A); |
|
|
2761 | |
2733 | signal (w->signum, ev_sighandler); |
2762 | signal (w->signum, ev_sighandler); |
2734 | # else |
2763 | # else |
2735 | struct sigaction sa; |
2764 | struct sigaction sa; |
2736 | |
2765 | |
2737 | evpipe_init (EV_A); |
2766 | evpipe_init (EV_A); |
… | |
… | |
2768 | signals [w->signum - 1].loop = 0; /* unattach from signal */ |
2797 | signals [w->signum - 1].loop = 0; /* unattach from signal */ |
2769 | #endif |
2798 | #endif |
2770 | #if EV_USE_SIGNALFD |
2799 | #if EV_USE_SIGNALFD |
2771 | if (sigfd >= 0) |
2800 | if (sigfd >= 0) |
2772 | { |
2801 | { |
2773 | sigprocmask (SIG_UNBLOCK, &sigfd_set, 0);//D |
2802 | sigset_t ss; |
|
|
2803 | |
|
|
2804 | sigemptyset (&ss); |
|
|
2805 | sigaddset (&ss, w->signum); |
2774 | sigdelset (&sigfd_set, w->signum); |
2806 | sigdelset (&sigfd_set, w->signum); |
|
|
2807 | |
2775 | signalfd (sigfd, &sigfd_set, 0); |
2808 | signalfd (sigfd, &sigfd_set, 0); |
2776 | sigprocmask (SIG_BLOCK, &sigfd_set, 0);//D |
2809 | sigprocmask (SIG_UNBLOCK, &ss, 0); |
2777 | /*TODO: maybe unblock signal? */ |
|
|
2778 | } |
2810 | } |
2779 | else |
2811 | else |
2780 | #endif |
2812 | #endif |
2781 | signal (w->signum, SIG_DFL); |
2813 | signal (w->signum, SIG_DFL); |
2782 | } |
2814 | } |
… | |
… | |
2828 | #define MIN_STAT_INTERVAL 0.1074891 |
2860 | #define MIN_STAT_INTERVAL 0.1074891 |
2829 | |
2861 | |
2830 | static void noinline stat_timer_cb (EV_P_ ev_timer *w_, int revents); |
2862 | static void noinline stat_timer_cb (EV_P_ ev_timer *w_, int revents); |
2831 | |
2863 | |
2832 | #if EV_USE_INOTIFY |
2864 | #if EV_USE_INOTIFY |
2833 | # define EV_INOTIFY_BUFSIZE 8192 |
2865 | |
|
|
2866 | /* the * 2 is to allow for alignment padding, which for some reason is >> 8 */ |
|
|
2867 | # define EV_INOTIFY_BUFSIZE (sizeof (struct inotify_event) * 2 + NAME_MAX) |
2834 | |
2868 | |
2835 | static void noinline |
2869 | static void noinline |
2836 | infy_add (EV_P_ ev_stat *w) |
2870 | infy_add (EV_P_ ev_stat *w) |
2837 | { |
2871 | { |
2838 | 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); |
2872 | 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); |
2839 | |
2873 | |
2840 | if (w->wd < 0) |
2874 | if (w->wd >= 0) |
|
|
2875 | { |
|
|
2876 | struct statfs sfs; |
|
|
2877 | |
|
|
2878 | /* now local changes will be tracked by inotify, but remote changes won't */ |
|
|
2879 | /* unless the filesystem is known to be local, we therefore still poll */ |
|
|
2880 | /* also do poll on <2.6.25, but with normal frequency */ |
|
|
2881 | |
|
|
2882 | if (!fs_2625) |
|
|
2883 | w->timer.repeat = w->interval ? w->interval : DEF_STAT_INTERVAL; |
|
|
2884 | else if (!statfs (w->path, &sfs) |
|
|
2885 | && (sfs.f_type == 0x1373 /* devfs */ |
|
|
2886 | || sfs.f_type == 0xEF53 /* ext2/3 */ |
|
|
2887 | || sfs.f_type == 0x3153464a /* jfs */ |
|
|
2888 | || sfs.f_type == 0x52654973 /* reiser3 */ |
|
|
2889 | || sfs.f_type == 0x01021994 /* tempfs */ |
|
|
2890 | || sfs.f_type == 0x58465342 /* xfs */)) |
|
|
2891 | w->timer.repeat = 0.; /* filesystem is local, kernel new enough */ |
|
|
2892 | else |
|
|
2893 | w->timer.repeat = w->interval ? w->interval : NFS_STAT_INTERVAL; /* remote, use reduced frequency */ |
2841 | { |
2894 | } |
|
|
2895 | else |
|
|
2896 | { |
|
|
2897 | /* can't use inotify, continue to stat */ |
2842 | w->timer.repeat = w->interval ? w->interval : DEF_STAT_INTERVAL; |
2898 | w->timer.repeat = w->interval ? w->interval : DEF_STAT_INTERVAL; |
2843 | ev_timer_again (EV_A_ &w->timer); /* this is not race-free, so we still need to recheck periodically */ |
|
|
2844 | |
2899 | |
2845 | /* monitor some parent directory for speedup hints */ |
2900 | /* if path is not there, monitor some parent directory for speedup hints */ |
2846 | /* note that exceeding the hardcoded path limit is not a correctness issue, */ |
2901 | /* note that exceeding the hardcoded path limit is not a correctness issue, */ |
2847 | /* but an efficiency issue only */ |
2902 | /* but an efficiency issue only */ |
2848 | if ((errno == ENOENT || errno == EACCES) && strlen (w->path) < 4096) |
2903 | if ((errno == ENOENT || errno == EACCES) && strlen (w->path) < 4096) |
2849 | { |
2904 | { |
2850 | char path [4096]; |
2905 | char path [4096]; |
… | |
… | |
2866 | while (w->wd < 0 && (errno == ENOENT || errno == EACCES)); |
2921 | while (w->wd < 0 && (errno == ENOENT || errno == EACCES)); |
2867 | } |
2922 | } |
2868 | } |
2923 | } |
2869 | |
2924 | |
2870 | if (w->wd >= 0) |
2925 | if (w->wd >= 0) |
2871 | { |
|
|
2872 | struct statfs sfs; |
|
|
2873 | |
|
|
2874 | wlist_add (&fs_hash [w->wd & (EV_INOTIFY_HASHSIZE - 1)].head, (WL)w); |
2926 | wlist_add (&fs_hash [w->wd & (EV_INOTIFY_HASHSIZE - 1)].head, (WL)w); |
2875 | |
2927 | |
2876 | /* now local changes will be tracked by inotify, but remote changes won't */ |
2928 | /* now re-arm timer, if required */ |
2877 | /* unless the filesystem it known to be local, we therefore still poll */ |
2929 | if (ev_is_active (&w->timer)) ev_ref (EV_A); |
2878 | /* also do poll on <2.6.25, but with normal frequency */ |
|
|
2879 | |
|
|
2880 | if (fs_2625 && !statfs (w->path, &sfs)) |
|
|
2881 | if (sfs.f_type == 0x1373 /* devfs */ |
|
|
2882 | || sfs.f_type == 0xEF53 /* ext2/3 */ |
|
|
2883 | || sfs.f_type == 0x3153464a /* jfs */ |
|
|
2884 | || sfs.f_type == 0x52654973 /* reiser3 */ |
|
|
2885 | || sfs.f_type == 0x01021994 /* tempfs */ |
|
|
2886 | || sfs.f_type == 0x58465342 /* xfs */) |
|
|
2887 | return; |
|
|
2888 | |
|
|
2889 | w->timer.repeat = w->interval ? w->interval : fs_2625 ? NFS_STAT_INTERVAL : DEF_STAT_INTERVAL; |
|
|
2890 | ev_timer_again (EV_A_ &w->timer); |
2930 | ev_timer_again (EV_A_ &w->timer); |
2891 | } |
2931 | if (ev_is_active (&w->timer)) ev_unref (EV_A); |
2892 | } |
2932 | } |
2893 | |
2933 | |
2894 | static void noinline |
2934 | static void noinline |
2895 | infy_del (EV_P_ ev_stat *w) |
2935 | infy_del (EV_P_ ev_stat *w) |
2896 | { |
2936 | { |
… | |
… | |
2941 | |
2981 | |
2942 | static void |
2982 | static void |
2943 | infy_cb (EV_P_ ev_io *w, int revents) |
2983 | infy_cb (EV_P_ ev_io *w, int revents) |
2944 | { |
2984 | { |
2945 | char buf [EV_INOTIFY_BUFSIZE]; |
2985 | char buf [EV_INOTIFY_BUFSIZE]; |
2946 | struct inotify_event *ev = (struct inotify_event *)buf; |
|
|
2947 | int ofs; |
2986 | int ofs; |
2948 | int len = read (fs_fd, buf, sizeof (buf)); |
2987 | int len = read (fs_fd, buf, sizeof (buf)); |
2949 | |
2988 | |
2950 | for (ofs = 0; ofs < len; ofs += sizeof (struct inotify_event) + ev->len) |
2989 | for (ofs = 0; ofs < len; ) |
|
|
2990 | { |
|
|
2991 | struct inotify_event *ev = (struct inotify_event *)(buf + ofs); |
2951 | infy_wd (EV_A_ ev->wd, ev->wd, ev); |
2992 | infy_wd (EV_A_ ev->wd, ev->wd, ev); |
|
|
2993 | ofs += sizeof (struct inotify_event) + ev->len; |
|
|
2994 | } |
2952 | } |
2995 | } |
2953 | |
2996 | |
2954 | inline_size void |
2997 | inline_size void |
2955 | check_2625 (EV_P) |
2998 | check_2625 (EV_P) |
2956 | { |
2999 | { |
… | |
… | |
2972 | return; |
3015 | return; |
2973 | |
3016 | |
2974 | fs_2625 = 1; |
3017 | fs_2625 = 1; |
2975 | } |
3018 | } |
2976 | |
3019 | |
|
|
3020 | inline_size int |
|
|
3021 | infy_newfd (void) |
|
|
3022 | { |
|
|
3023 | #if defined (IN_CLOEXEC) && defined (IN_NONBLOCK) |
|
|
3024 | int fd = inotify_init1 (IN_CLOEXEC | IN_NONBLOCK); |
|
|
3025 | if (fd >= 0) |
|
|
3026 | return fd; |
|
|
3027 | #endif |
|
|
3028 | return inotify_init (); |
|
|
3029 | } |
|
|
3030 | |
2977 | inline_size void |
3031 | inline_size void |
2978 | infy_init (EV_P) |
3032 | infy_init (EV_P) |
2979 | { |
3033 | { |
2980 | if (fs_fd != -2) |
3034 | if (fs_fd != -2) |
2981 | return; |
3035 | return; |
2982 | |
3036 | |
2983 | fs_fd = -1; |
3037 | fs_fd = -1; |
2984 | |
3038 | |
2985 | check_2625 (EV_A); |
3039 | check_2625 (EV_A); |
2986 | |
3040 | |
2987 | fs_fd = inotify_init (); |
3041 | fs_fd = infy_newfd (); |
2988 | |
3042 | |
2989 | if (fs_fd >= 0) |
3043 | if (fs_fd >= 0) |
2990 | { |
3044 | { |
|
|
3045 | fd_intern (fs_fd); |
2991 | ev_io_init (&fs_w, infy_cb, fs_fd, EV_READ); |
3046 | ev_io_init (&fs_w, infy_cb, fs_fd, EV_READ); |
2992 | ev_set_priority (&fs_w, EV_MAXPRI); |
3047 | ev_set_priority (&fs_w, EV_MAXPRI); |
2993 | ev_io_start (EV_A_ &fs_w); |
3048 | ev_io_start (EV_A_ &fs_w); |
|
|
3049 | ev_unref (EV_A); |
2994 | } |
3050 | } |
2995 | } |
3051 | } |
2996 | |
3052 | |
2997 | inline_size void |
3053 | inline_size void |
2998 | infy_fork (EV_P) |
3054 | infy_fork (EV_P) |
… | |
… | |
3000 | int slot; |
3056 | int slot; |
3001 | |
3057 | |
3002 | if (fs_fd < 0) |
3058 | if (fs_fd < 0) |
3003 | return; |
3059 | return; |
3004 | |
3060 | |
|
|
3061 | ev_ref (EV_A); |
|
|
3062 | ev_io_stop (EV_A_ &fs_w); |
3005 | close (fs_fd); |
3063 | close (fs_fd); |
3006 | fs_fd = inotify_init (); |
3064 | fs_fd = infy_newfd (); |
|
|
3065 | |
|
|
3066 | if (fs_fd >= 0) |
|
|
3067 | { |
|
|
3068 | fd_intern (fs_fd); |
|
|
3069 | ev_io_set (&fs_w, fs_fd, EV_READ); |
|
|
3070 | ev_io_start (EV_A_ &fs_w); |
|
|
3071 | ev_unref (EV_A); |
|
|
3072 | } |
3007 | |
3073 | |
3008 | for (slot = 0; slot < EV_INOTIFY_HASHSIZE; ++slot) |
3074 | for (slot = 0; slot < EV_INOTIFY_HASHSIZE; ++slot) |
3009 | { |
3075 | { |
3010 | WL w_ = fs_hash [slot].head; |
3076 | WL w_ = fs_hash [slot].head; |
3011 | fs_hash [slot].head = 0; |
3077 | fs_hash [slot].head = 0; |
… | |
… | |
3018 | w->wd = -1; |
3084 | w->wd = -1; |
3019 | |
3085 | |
3020 | if (fs_fd >= 0) |
3086 | if (fs_fd >= 0) |
3021 | infy_add (EV_A_ w); /* re-add, no matter what */ |
3087 | infy_add (EV_A_ w); /* re-add, no matter what */ |
3022 | else |
3088 | else |
|
|
3089 | { |
|
|
3090 | w->timer.repeat = w->interval ? w->interval : DEF_STAT_INTERVAL; |
|
|
3091 | if (ev_is_active (&w->timer)) ev_ref (EV_A); |
3023 | ev_timer_again (EV_A_ &w->timer); |
3092 | ev_timer_again (EV_A_ &w->timer); |
|
|
3093 | if (ev_is_active (&w->timer)) ev_unref (EV_A); |
|
|
3094 | } |
3024 | } |
3095 | } |
3025 | } |
3096 | } |
3026 | } |
3097 | } |
3027 | |
3098 | |
3028 | #endif |
3099 | #endif |
… | |
… | |
3045 | static void noinline |
3116 | static void noinline |
3046 | stat_timer_cb (EV_P_ ev_timer *w_, int revents) |
3117 | stat_timer_cb (EV_P_ ev_timer *w_, int revents) |
3047 | { |
3118 | { |
3048 | ev_stat *w = (ev_stat *)(((char *)w_) - offsetof (ev_stat, timer)); |
3119 | ev_stat *w = (ev_stat *)(((char *)w_) - offsetof (ev_stat, timer)); |
3049 | |
3120 | |
3050 | /* we copy this here each the time so that */ |
3121 | ev_statdata prev = w->attr; |
3051 | /* prev has the old value when the callback gets invoked */ |
|
|
3052 | w->prev = w->attr; |
|
|
3053 | ev_stat_stat (EV_A_ w); |
3122 | ev_stat_stat (EV_A_ w); |
3054 | |
3123 | |
3055 | /* memcmp doesn't work on netbsd, they.... do stuff to their struct stat */ |
3124 | /* memcmp doesn't work on netbsd, they.... do stuff to their struct stat */ |
3056 | if ( |
3125 | if ( |
3057 | w->prev.st_dev != w->attr.st_dev |
3126 | prev.st_dev != w->attr.st_dev |
3058 | || w->prev.st_ino != w->attr.st_ino |
3127 | || prev.st_ino != w->attr.st_ino |
3059 | || w->prev.st_mode != w->attr.st_mode |
3128 | || prev.st_mode != w->attr.st_mode |
3060 | || w->prev.st_nlink != w->attr.st_nlink |
3129 | || prev.st_nlink != w->attr.st_nlink |
3061 | || w->prev.st_uid != w->attr.st_uid |
3130 | || prev.st_uid != w->attr.st_uid |
3062 | || w->prev.st_gid != w->attr.st_gid |
3131 | || prev.st_gid != w->attr.st_gid |
3063 | || w->prev.st_rdev != w->attr.st_rdev |
3132 | || prev.st_rdev != w->attr.st_rdev |
3064 | || w->prev.st_size != w->attr.st_size |
3133 | || prev.st_size != w->attr.st_size |
3065 | || w->prev.st_atime != w->attr.st_atime |
3134 | || prev.st_atime != w->attr.st_atime |
3066 | || w->prev.st_mtime != w->attr.st_mtime |
3135 | || prev.st_mtime != w->attr.st_mtime |
3067 | || w->prev.st_ctime != w->attr.st_ctime |
3136 | || prev.st_ctime != w->attr.st_ctime |
3068 | ) { |
3137 | ) { |
|
|
3138 | /* we only update w->prev on actual differences */ |
|
|
3139 | /* in case we test more often than invoke the callback, */ |
|
|
3140 | /* to ensure that prev is always different to attr */ |
|
|
3141 | w->prev = prev; |
|
|
3142 | |
3069 | #if EV_USE_INOTIFY |
3143 | #if EV_USE_INOTIFY |
3070 | if (fs_fd >= 0) |
3144 | if (fs_fd >= 0) |
3071 | { |
3145 | { |
3072 | infy_del (EV_A_ w); |
3146 | infy_del (EV_A_ w); |
3073 | infy_add (EV_A_ w); |
3147 | infy_add (EV_A_ w); |
… | |
… | |
3098 | |
3172 | |
3099 | if (fs_fd >= 0) |
3173 | if (fs_fd >= 0) |
3100 | infy_add (EV_A_ w); |
3174 | infy_add (EV_A_ w); |
3101 | else |
3175 | else |
3102 | #endif |
3176 | #endif |
|
|
3177 | { |
3103 | ev_timer_again (EV_A_ &w->timer); |
3178 | ev_timer_again (EV_A_ &w->timer); |
|
|
3179 | ev_unref (EV_A); |
|
|
3180 | } |
3104 | |
3181 | |
3105 | ev_start (EV_A_ (W)w, 1); |
3182 | ev_start (EV_A_ (W)w, 1); |
3106 | |
3183 | |
3107 | EV_FREQUENT_CHECK; |
3184 | EV_FREQUENT_CHECK; |
3108 | } |
3185 | } |
… | |
… | |
3117 | EV_FREQUENT_CHECK; |
3194 | EV_FREQUENT_CHECK; |
3118 | |
3195 | |
3119 | #if EV_USE_INOTIFY |
3196 | #if EV_USE_INOTIFY |
3120 | infy_del (EV_A_ w); |
3197 | infy_del (EV_A_ w); |
3121 | #endif |
3198 | #endif |
|
|
3199 | |
|
|
3200 | if (ev_is_active (&w->timer)) |
|
|
3201 | { |
|
|
3202 | ev_ref (EV_A); |
3122 | ev_timer_stop (EV_A_ &w->timer); |
3203 | ev_timer_stop (EV_A_ &w->timer); |
|
|
3204 | } |
3123 | |
3205 | |
3124 | ev_stop (EV_A_ (W)w); |
3206 | ev_stop (EV_A_ (W)w); |
3125 | |
3207 | |
3126 | EV_FREQUENT_CHECK; |
3208 | EV_FREQUENT_CHECK; |
3127 | } |
3209 | } |
… | |
… | |
3346 | EV_FREQUENT_CHECK; |
3428 | EV_FREQUENT_CHECK; |
3347 | |
3429 | |
3348 | ev_io_stop (EV_A_ &w->io); |
3430 | ev_io_stop (EV_A_ &w->io); |
3349 | ev_prepare_stop (EV_A_ &w->prepare); |
3431 | ev_prepare_stop (EV_A_ &w->prepare); |
3350 | ev_fork_stop (EV_A_ &w->fork); |
3432 | ev_fork_stop (EV_A_ &w->fork); |
|
|
3433 | |
|
|
3434 | ev_stop (EV_A_ (W)w); |
3351 | |
3435 | |
3352 | EV_FREQUENT_CHECK; |
3436 | EV_FREQUENT_CHECK; |
3353 | } |
3437 | } |
3354 | #endif |
3438 | #endif |
3355 | |
3439 | |