… | |
… | |
302 | # define EV_USE_EVENTFD 0 |
302 | # define EV_USE_EVENTFD 0 |
303 | # endif |
303 | # endif |
304 | #endif |
304 | #endif |
305 | |
305 | |
306 | #ifndef EV_USE_SIGNALFD |
306 | #ifndef EV_USE_SIGNALFD |
307 | # if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 9)) |
307 | # if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 7)) |
308 | # define EV_USE_SIGNALFD 1 |
308 | # define EV_USE_SIGNALFD 1 |
309 | # else |
309 | # else |
310 | # define EV_USE_SIGNALFD 0 |
310 | # define EV_USE_SIGNALFD 0 |
311 | # endif |
311 | # endif |
312 | #endif |
312 | #endif |
… | |
… | |
402 | } |
402 | } |
403 | # endif |
403 | # endif |
404 | #endif |
404 | #endif |
405 | |
405 | |
406 | #if EV_USE_SIGNALFD |
406 | #if EV_USE_SIGNALFD |
407 | # include <sys/signalfd.h> |
407 | /* our minimum requirement is glibc 2.7 which has the stub, but not the header */ |
|
|
408 | # include <stdint.h> |
|
|
409 | # ifndef SFD_NONBLOCK |
|
|
410 | # define SFD_NONBLOCK O_NONBLOCK |
408 | #endif |
411 | # endif |
|
|
412 | # ifndef SFD_CLOEXEC |
|
|
413 | # ifdef O_CLOEXEC |
|
|
414 | # define SFD_CLOEXEC O_CLOEXEC |
|
|
415 | # else |
|
|
416 | # define SFD_CLOEXEC 02000000 |
|
|
417 | # endif |
|
|
418 | # endif |
|
|
419 | # ifdef __cplusplus |
|
|
420 | extern "C" { |
|
|
421 | # endif |
|
|
422 | int signalfd (int fd, const sigset_t *mask, int flags); |
|
|
423 | |
|
|
424 | struct signalfd_siginfo |
|
|
425 | { |
|
|
426 | uint32_t ssi_signo; |
|
|
427 | char pad[128 - sizeof (uint32_t)]; |
|
|
428 | }; |
|
|
429 | # ifdef __cplusplus |
|
|
430 | } |
|
|
431 | # endif |
|
|
432 | #endif |
|
|
433 | |
409 | |
434 | |
410 | /**/ |
435 | /**/ |
411 | |
436 | |
412 | #if EV_VERIFY >= 3 |
437 | #if EV_VERIFY >= 3 |
413 | # define EV_FREQUENT_CHECK ev_loop_verify (EV_A) |
438 | # define EV_FREQUENT_CHECK ev_loop_verify (EV_A) |
… | |
… | |
425 | */ |
450 | */ |
426 | #define TIME_EPSILON 0.0001220703125 /* 1/8192 */ |
451 | #define TIME_EPSILON 0.0001220703125 /* 1/8192 */ |
427 | |
452 | |
428 | #define MIN_TIMEJUMP 1. /* minimum timejump that gets detected (if monotonic clock available) */ |
453 | #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) */ |
454 | #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 | |
455 | |
432 | #if __GNUC__ >= 4 |
456 | #if __GNUC__ >= 4 |
433 | # define expect(expr,value) __builtin_expect ((expr),(value)) |
457 | # define expect(expr,value) __builtin_expect ((expr),(value)) |
434 | # define noinline __attribute__ ((noinline)) |
458 | # define noinline __attribute__ ((noinline)) |
435 | #else |
459 | #else |
… | |
… | |
474 | static EV_ATOMIC_T have_realtime; /* did clock_gettime (CLOCK_REALTIME) work? */ |
498 | static EV_ATOMIC_T have_realtime; /* did clock_gettime (CLOCK_REALTIME) work? */ |
475 | #endif |
499 | #endif |
476 | |
500 | |
477 | #if EV_USE_MONOTONIC |
501 | #if EV_USE_MONOTONIC |
478 | static EV_ATOMIC_T have_monotonic; /* did clock_gettime (CLOCK_MONOTONIC) work? */ |
502 | static EV_ATOMIC_T have_monotonic; /* did clock_gettime (CLOCK_MONOTONIC) work? */ |
|
|
503 | #endif |
|
|
504 | |
|
|
505 | #ifndef EV_FD_TO_WIN32_HANDLE |
|
|
506 | # define EV_FD_TO_WIN32_HANDLE(fd) _get_osfhandle (fd) |
|
|
507 | #endif |
|
|
508 | #ifndef EV_WIN32_HANDLE_TO_FD |
|
|
509 | # define EV_WIN32_HANDLE_TO_FD(handle) _open_osfhandle (fd, 0) |
|
|
510 | #endif |
|
|
511 | #ifndef EV_WIN32_CLOSE_FD |
|
|
512 | # define EV_WIN32_CLOSE_FD(fd) close (fd) |
479 | #endif |
513 | #endif |
480 | |
514 | |
481 | #ifdef _WIN32 |
515 | #ifdef _WIN32 |
482 | # include "ev_win32.c" |
516 | # include "ev_win32.c" |
483 | #endif |
517 | #endif |
… | |
… | |
876 | |
910 | |
877 | #if EV_SELECT_IS_WINSOCKET |
911 | #if EV_SELECT_IS_WINSOCKET |
878 | if (events) |
912 | if (events) |
879 | { |
913 | { |
880 | unsigned long arg; |
914 | unsigned long arg; |
881 | #ifdef EV_FD_TO_WIN32_HANDLE |
|
|
882 | anfd->handle = EV_FD_TO_WIN32_HANDLE (fd); |
915 | anfd->handle = EV_FD_TO_WIN32_HANDLE (fd); |
883 | #else |
|
|
884 | anfd->handle = _get_osfhandle (fd); |
|
|
885 | #endif |
|
|
886 | assert (("libev: only socket fds supported in this configuration", ioctlsocket (anfd->handle, FIONREAD, &arg) == 0)); |
916 | assert (("libev: only socket fds supported in this configuration", ioctlsocket (anfd->handle, FIONREAD, &arg) == 0)); |
887 | } |
917 | } |
888 | #endif |
918 | #endif |
889 | |
919 | |
890 | { |
920 | { |
… | |
… | |
1621 | close (evfd); |
1651 | close (evfd); |
1622 | #endif |
1652 | #endif |
1623 | |
1653 | |
1624 | if (evpipe [0] >= 0) |
1654 | if (evpipe [0] >= 0) |
1625 | { |
1655 | { |
1626 | close (evpipe [0]); |
1656 | EV_WIN32_CLOSE_FD (evpipe [0]); |
1627 | close (evpipe [1]); |
1657 | EV_WIN32_CLOSE_FD (evpipe [1]); |
1628 | } |
1658 | } |
1629 | } |
1659 | } |
1630 | |
1660 | |
1631 | #if EV_USE_SIGNALFD |
1661 | #if EV_USE_SIGNALFD |
1632 | if (ev_is_active (&sigfd_w)) |
1662 | if (ev_is_active (&sigfd_w)) |
1633 | { |
|
|
1634 | /*ev_ref (EV_A);*/ |
|
|
1635 | /*ev_io_stop (EV_A_ &sigfd_w);*/ |
|
|
1636 | |
|
|
1637 | close (sigfd); |
1663 | close (sigfd); |
1638 | } |
|
|
1639 | #endif |
1664 | #endif |
1640 | |
1665 | |
1641 | #if EV_USE_INOTIFY |
1666 | #if EV_USE_INOTIFY |
1642 | if (fs_fd >= 0) |
1667 | if (fs_fd >= 0) |
1643 | close (fs_fd); |
1668 | close (fs_fd); |
… | |
… | |
1728 | close (evfd); |
1753 | close (evfd); |
1729 | #endif |
1754 | #endif |
1730 | |
1755 | |
1731 | if (evpipe [0] >= 0) |
1756 | if (evpipe [0] >= 0) |
1732 | { |
1757 | { |
1733 | close (evpipe [0]); |
1758 | EV_WIN32_CLOSE_FD (evpipe [0]); |
1734 | close (evpipe [1]); |
1759 | EV_WIN32_CLOSE_FD (evpipe [1]); |
1735 | } |
1760 | } |
1736 | |
1761 | |
1737 | evpipe_init (EV_A); |
1762 | evpipe_init (EV_A); |
1738 | /* now iterate over everything, in case we missed something */ |
1763 | /* now iterate over everything, in case we missed something */ |
1739 | pipecb (EV_A_ &pipe_w, EV_READ); |
1764 | pipecb (EV_A_ &pipe_w, EV_READ); |
… | |
… | |
2722 | # if EV_USE_SIGNALFD |
2747 | # if EV_USE_SIGNALFD |
2723 | if (sigfd < 0) /*TODO*/ |
2748 | if (sigfd < 0) /*TODO*/ |
2724 | # endif |
2749 | # endif |
2725 | { |
2750 | { |
2726 | # if _WIN32 |
2751 | # if _WIN32 |
|
|
2752 | evpipe_init (EV_A); |
|
|
2753 | |
2727 | signal (w->signum, ev_sighandler); |
2754 | signal (w->signum, ev_sighandler); |
2728 | # else |
2755 | # else |
2729 | struct sigaction sa; |
2756 | struct sigaction sa; |
2730 | |
2757 | |
2731 | evpipe_init (EV_A); |
2758 | evpipe_init (EV_A); |
… | |
… | |
2829 | static void noinline |
2856 | static void noinline |
2830 | infy_add (EV_P_ ev_stat *w) |
2857 | infy_add (EV_P_ ev_stat *w) |
2831 | { |
2858 | { |
2832 | 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); |
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); |
2833 | |
2860 | |
2834 | if (w->wd < 0) |
2861 | if (w->wd >= 0) |
|
|
2862 | { |
|
|
2863 | struct statfs sfs; |
|
|
2864 | |
|
|
2865 | /* now local changes will be tracked by inotify, but remote changes won't */ |
|
|
2866 | /* unless the filesystem is known to be local, we therefore still poll */ |
|
|
2867 | /* also do poll on <2.6.25, but with normal frequency */ |
|
|
2868 | |
|
|
2869 | if (!fs_2625) |
|
|
2870 | w->timer.repeat = w->interval ? w->interval : DEF_STAT_INTERVAL; |
|
|
2871 | else if (!statfs (w->path, &sfs) |
|
|
2872 | && (sfs.f_type == 0x1373 /* devfs */ |
|
|
2873 | || sfs.f_type == 0xEF53 /* ext2/3 */ |
|
|
2874 | || sfs.f_type == 0x3153464a /* jfs */ |
|
|
2875 | || sfs.f_type == 0x52654973 /* reiser3 */ |
|
|
2876 | || sfs.f_type == 0x01021994 /* tempfs */ |
|
|
2877 | || sfs.f_type == 0x58465342 /* xfs */)) |
|
|
2878 | w->timer.repeat = 0.; /* filesystem is local, kernel new enough */ |
|
|
2879 | else |
|
|
2880 | w->timer.repeat = w->interval ? w->interval : NFS_STAT_INTERVAL; /* remote, use reduced frequency */ |
2835 | { |
2881 | } |
|
|
2882 | else |
|
|
2883 | { |
|
|
2884 | /* can't use inotify, continue to stat */ |
2836 | w->timer.repeat = w->interval ? w->interval : DEF_STAT_INTERVAL; |
2885 | w->timer.repeat = w->interval ? w->interval : DEF_STAT_INTERVAL; |
2837 | ev_timer_again (EV_A_ &w->timer); /* this is not race-free, so we still need to recheck periodically */ |
|
|
2838 | |
2886 | |
2839 | /* monitor some parent directory for speedup hints */ |
2887 | /* if path is not there, monitor some parent directory for speedup hints */ |
2840 | /* note that exceeding the hardcoded path limit is not a correctness issue, */ |
2888 | /* note that exceeding the hardcoded path limit is not a correctness issue, */ |
2841 | /* but an efficiency issue only */ |
2889 | /* but an efficiency issue only */ |
2842 | if ((errno == ENOENT || errno == EACCES) && strlen (w->path) < 4096) |
2890 | if ((errno == ENOENT || errno == EACCES) && strlen (w->path) < 4096) |
2843 | { |
2891 | { |
2844 | char path [4096]; |
2892 | char path [4096]; |
… | |
… | |
2860 | while (w->wd < 0 && (errno == ENOENT || errno == EACCES)); |
2908 | while (w->wd < 0 && (errno == ENOENT || errno == EACCES)); |
2861 | } |
2909 | } |
2862 | } |
2910 | } |
2863 | |
2911 | |
2864 | if (w->wd >= 0) |
2912 | if (w->wd >= 0) |
2865 | { |
|
|
2866 | struct statfs sfs; |
|
|
2867 | |
|
|
2868 | wlist_add (&fs_hash [w->wd & (EV_INOTIFY_HASHSIZE - 1)].head, (WL)w); |
2913 | wlist_add (&fs_hash [w->wd & (EV_INOTIFY_HASHSIZE - 1)].head, (WL)w); |
2869 | |
2914 | |
2870 | /* now local changes will be tracked by inotify, but remote changes won't */ |
2915 | /* now re-arm timer, if required */ |
2871 | /* unless the filesystem it known to be local, we therefore still poll */ |
2916 | if (ev_is_active (&w->timer)) ev_ref (EV_A); |
2872 | /* also do poll on <2.6.25, but with normal frequency */ |
|
|
2873 | |
|
|
2874 | if (fs_2625 && !statfs (w->path, &sfs)) |
|
|
2875 | if (sfs.f_type == 0x1373 /* devfs */ |
|
|
2876 | || sfs.f_type == 0xEF53 /* ext2/3 */ |
|
|
2877 | || sfs.f_type == 0x3153464a /* jfs */ |
|
|
2878 | || sfs.f_type == 0x52654973 /* reiser3 */ |
|
|
2879 | || sfs.f_type == 0x01021994 /* tempfs */ |
|
|
2880 | || sfs.f_type == 0x58465342 /* xfs */) |
|
|
2881 | return; |
|
|
2882 | |
|
|
2883 | w->timer.repeat = w->interval ? w->interval : fs_2625 ? NFS_STAT_INTERVAL : DEF_STAT_INTERVAL; |
|
|
2884 | ev_timer_again (EV_A_ &w->timer); |
2917 | ev_timer_again (EV_A_ &w->timer); |
2885 | } |
2918 | if (ev_is_active (&w->timer)) ev_unref (EV_A); |
2886 | } |
2919 | } |
2887 | |
2920 | |
2888 | static void noinline |
2921 | static void noinline |
2889 | infy_del (EV_P_ ev_stat *w) |
2922 | infy_del (EV_P_ ev_stat *w) |
2890 | { |
2923 | { |
… | |
… | |
2966 | return; |
2999 | return; |
2967 | |
3000 | |
2968 | fs_2625 = 1; |
3001 | fs_2625 = 1; |
2969 | } |
3002 | } |
2970 | |
3003 | |
|
|
3004 | inline_size int |
|
|
3005 | infy_newfd (void) |
|
|
3006 | { |
|
|
3007 | #if defined (IN_CLOEXEC) && defined (IN_NONBLOCK) |
|
|
3008 | int fd = inotify_init1 (IN_CLOEXEC | IN_NONBLOCK); |
|
|
3009 | if (fd >= 0) |
|
|
3010 | return fd; |
|
|
3011 | #endif |
|
|
3012 | return inotify_init (); |
|
|
3013 | } |
|
|
3014 | |
2971 | inline_size void |
3015 | inline_size void |
2972 | infy_init (EV_P) |
3016 | infy_init (EV_P) |
2973 | { |
3017 | { |
2974 | if (fs_fd != -2) |
3018 | if (fs_fd != -2) |
2975 | return; |
3019 | return; |
2976 | |
3020 | |
2977 | fs_fd = -1; |
3021 | fs_fd = -1; |
2978 | |
3022 | |
2979 | check_2625 (EV_A); |
3023 | check_2625 (EV_A); |
2980 | |
3024 | |
2981 | fs_fd = inotify_init (); |
3025 | fs_fd = infy_newfd (); |
2982 | |
3026 | |
2983 | if (fs_fd >= 0) |
3027 | if (fs_fd >= 0) |
2984 | { |
3028 | { |
|
|
3029 | fd_intern (fs_fd); |
2985 | ev_io_init (&fs_w, infy_cb, fs_fd, EV_READ); |
3030 | ev_io_init (&fs_w, infy_cb, fs_fd, EV_READ); |
2986 | ev_set_priority (&fs_w, EV_MAXPRI); |
3031 | ev_set_priority (&fs_w, EV_MAXPRI); |
2987 | ev_io_start (EV_A_ &fs_w); |
3032 | ev_io_start (EV_A_ &fs_w); |
|
|
3033 | ev_unref (EV_A); |
2988 | } |
3034 | } |
2989 | } |
3035 | } |
2990 | |
3036 | |
2991 | inline_size void |
3037 | inline_size void |
2992 | infy_fork (EV_P) |
3038 | infy_fork (EV_P) |
… | |
… | |
2994 | int slot; |
3040 | int slot; |
2995 | |
3041 | |
2996 | if (fs_fd < 0) |
3042 | if (fs_fd < 0) |
2997 | return; |
3043 | return; |
2998 | |
3044 | |
|
|
3045 | ev_ref (EV_A); |
|
|
3046 | ev_io_stop (EV_A_ &fs_w); |
2999 | close (fs_fd); |
3047 | close (fs_fd); |
3000 | fs_fd = inotify_init (); |
3048 | fs_fd = infy_newfd (); |
|
|
3049 | |
|
|
3050 | if (fs_fd >= 0) |
|
|
3051 | { |
|
|
3052 | fd_intern (fs_fd); |
|
|
3053 | ev_io_set (&fs_w, fs_fd, EV_READ); |
|
|
3054 | ev_io_start (EV_A_ &fs_w); |
|
|
3055 | ev_unref (EV_A); |
|
|
3056 | } |
3001 | |
3057 | |
3002 | for (slot = 0; slot < EV_INOTIFY_HASHSIZE; ++slot) |
3058 | for (slot = 0; slot < EV_INOTIFY_HASHSIZE; ++slot) |
3003 | { |
3059 | { |
3004 | WL w_ = fs_hash [slot].head; |
3060 | WL w_ = fs_hash [slot].head; |
3005 | fs_hash [slot].head = 0; |
3061 | fs_hash [slot].head = 0; |
… | |
… | |
3012 | w->wd = -1; |
3068 | w->wd = -1; |
3013 | |
3069 | |
3014 | if (fs_fd >= 0) |
3070 | if (fs_fd >= 0) |
3015 | infy_add (EV_A_ w); /* re-add, no matter what */ |
3071 | infy_add (EV_A_ w); /* re-add, no matter what */ |
3016 | else |
3072 | else |
|
|
3073 | { |
|
|
3074 | w->timer.repeat = w->interval ? w->interval : DEF_STAT_INTERVAL; |
|
|
3075 | if (ev_is_active (&w->timer)) ev_ref (EV_A); |
3017 | ev_timer_again (EV_A_ &w->timer); |
3076 | ev_timer_again (EV_A_ &w->timer); |
|
|
3077 | if (ev_is_active (&w->timer)) ev_unref (EV_A); |
|
|
3078 | } |
3018 | } |
3079 | } |
3019 | } |
3080 | } |
3020 | } |
3081 | } |
3021 | |
3082 | |
3022 | #endif |
3083 | #endif |
… | |
… | |
3092 | |
3153 | |
3093 | if (fs_fd >= 0) |
3154 | if (fs_fd >= 0) |
3094 | infy_add (EV_A_ w); |
3155 | infy_add (EV_A_ w); |
3095 | else |
3156 | else |
3096 | #endif |
3157 | #endif |
|
|
3158 | { |
3097 | ev_timer_again (EV_A_ &w->timer); |
3159 | ev_timer_again (EV_A_ &w->timer); |
|
|
3160 | ev_unref (EV_A); |
|
|
3161 | } |
3098 | |
3162 | |
3099 | ev_start (EV_A_ (W)w, 1); |
3163 | ev_start (EV_A_ (W)w, 1); |
3100 | |
3164 | |
3101 | EV_FREQUENT_CHECK; |
3165 | EV_FREQUENT_CHECK; |
3102 | } |
3166 | } |
… | |
… | |
3111 | EV_FREQUENT_CHECK; |
3175 | EV_FREQUENT_CHECK; |
3112 | |
3176 | |
3113 | #if EV_USE_INOTIFY |
3177 | #if EV_USE_INOTIFY |
3114 | infy_del (EV_A_ w); |
3178 | infy_del (EV_A_ w); |
3115 | #endif |
3179 | #endif |
|
|
3180 | |
|
|
3181 | if (ev_is_active (&w->timer)) |
|
|
3182 | { |
|
|
3183 | ev_ref (EV_A); |
3116 | ev_timer_stop (EV_A_ &w->timer); |
3184 | ev_timer_stop (EV_A_ &w->timer); |
|
|
3185 | } |
3117 | |
3186 | |
3118 | ev_stop (EV_A_ (W)w); |
3187 | ev_stop (EV_A_ (W)w); |
3119 | |
3188 | |
3120 | EV_FREQUENT_CHECK; |
3189 | EV_FREQUENT_CHECK; |
3121 | } |
3190 | } |