| 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 |
| … | |
… | |
| 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 |
| … | |
… | |
| 344 | # endif |
345 | # endif |
| 345 | #endif |
346 | #endif |
| 346 | |
347 | |
| 347 | /* 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 */ |
| 348 | |
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 | |
| 349 | #ifndef CLOCK_MONOTONIC |
356 | #ifndef CLOCK_MONOTONIC |
| 350 | # undef EV_USE_MONOTONIC |
357 | # undef EV_USE_MONOTONIC |
| 351 | # define EV_USE_MONOTONIC 0 |
358 | # define EV_USE_MONOTONIC 0 |
| 352 | #endif |
359 | #endif |
| 353 | |
360 | |
| … | |
… | |
| 2157 | ANHE_at_cache (*he); |
2164 | ANHE_at_cache (*he); |
| 2158 | } |
2165 | } |
| 2159 | } |
2166 | } |
| 2160 | |
2167 | |
| 2161 | /* fetch new monotonic and realtime times from the kernel */ |
2168 | /* fetch new monotonic and realtime times from the kernel */ |
| 2162 | /* also detetc if there was a timejump, and act accordingly */ |
2169 | /* also detect if there was a timejump, and act accordingly */ |
| 2163 | inline_speed void |
2170 | inline_speed void |
| 2164 | time_update (EV_P_ ev_tstamp max_block) |
2171 | time_update (EV_P_ ev_tstamp max_block) |
| 2165 | { |
2172 | { |
| 2166 | #if EV_USE_MONOTONIC |
2173 | #if EV_USE_MONOTONIC |
| 2167 | if (expect_true (have_monotonic)) |
2174 | if (expect_true (have_monotonic)) |
| … | |
… | |
| 2853 | #define MIN_STAT_INTERVAL 0.1074891 |
2860 | #define MIN_STAT_INTERVAL 0.1074891 |
| 2854 | |
2861 | |
| 2855 | 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); |
| 2856 | |
2863 | |
| 2857 | #if EV_USE_INOTIFY |
2864 | #if EV_USE_INOTIFY |
| 2858 | # 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) |
| 2859 | |
2868 | |
| 2860 | static void noinline |
2869 | static void noinline |
| 2861 | infy_add (EV_P_ ev_stat *w) |
2870 | infy_add (EV_P_ ev_stat *w) |
| 2862 | { |
2871 | { |
| 2863 | 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); |
| … | |
… | |
| 2972 | |
2981 | |
| 2973 | static void |
2982 | static void |
| 2974 | infy_cb (EV_P_ ev_io *w, int revents) |
2983 | infy_cb (EV_P_ ev_io *w, int revents) |
| 2975 | { |
2984 | { |
| 2976 | char buf [EV_INOTIFY_BUFSIZE]; |
2985 | char buf [EV_INOTIFY_BUFSIZE]; |
| 2977 | struct inotify_event *ev = (struct inotify_event *)buf; |
|
|
| 2978 | int ofs; |
2986 | int ofs; |
| 2979 | int len = read (fs_fd, buf, sizeof (buf)); |
2987 | int len = read (fs_fd, buf, sizeof (buf)); |
| 2980 | |
2988 | |
| 2981 | 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); |
| 2982 | 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 | } |
| 2983 | } |
2995 | } |
| 2984 | |
2996 | |
| 2985 | inline_size void |
2997 | inline_size void |
| 2986 | check_2625 (EV_P) |
2998 | check_2625 (EV_P) |
| 2987 | { |
2999 | { |
