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 */ |
… | |
… | |
204 | #elif defined (MAXSIG) |
207 | #elif defined (MAXSIG) |
205 | # define EV_NSIG (MAXSIG+1) |
208 | # define EV_NSIG (MAXSIG+1) |
206 | #elif defined (MAX_SIG) |
209 | #elif defined (MAX_SIG) |
207 | # define EV_NSIG (MAX_SIG+1) |
210 | # define EV_NSIG (MAX_SIG+1) |
208 | #elif defined (SIGARRAYSIZE) |
211 | #elif defined (SIGARRAYSIZE) |
209 | # define EV_NSIG SIGARRAYSIZE /* Assume ary[SIGARRAYSIZE] */ |
212 | # define EV_NSIG (SIGARRAYSIZE) /* Assume ary[SIGARRAYSIZE] */ |
210 | #elif defined (_sys_nsig) |
213 | #elif defined (_sys_nsig) |
211 | # define EV_NSIG (_sys_nsig) /* Solaris 2.5 */ |
214 | # define EV_NSIG (_sys_nsig) /* Solaris 2.5 */ |
212 | #else |
215 | #else |
213 | # error "unable to find value for NSIG, please report" |
216 | # error "unable to find value for NSIG, please report" |
214 | /* 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! :) */ |
215 | # define EV_NSIG 65 |
219 | # define EV_NSIG 65 |
216 | #endif |
220 | #endif |
217 | |
221 | |
218 | #ifndef EV_USE_CLOCK_SYSCALL |
222 | #ifndef EV_USE_CLOCK_SYSCALL |
219 | # if __linux && __GLIBC__ >= 2 |
223 | # if __linux && __GLIBC__ >= 2 |
… | |
… | |
302 | # define EV_USE_EVENTFD 0 |
306 | # define EV_USE_EVENTFD 0 |
303 | # endif |
307 | # endif |
304 | #endif |
308 | #endif |
305 | |
309 | |
306 | #ifndef EV_USE_SIGNALFD |
310 | #ifndef EV_USE_SIGNALFD |
307 | # if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 9)) |
311 | # if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 7)) |
308 | # define EV_USE_SIGNALFD 1 |
312 | # define EV_USE_SIGNALFD 1 |
309 | # else |
313 | # else |
310 | # define EV_USE_SIGNALFD 0 |
314 | # define EV_USE_SIGNALFD 0 |
311 | # endif |
315 | # endif |
312 | #endif |
316 | #endif |
… | |
… | |
343 | # endif |
347 | # endif |
344 | #endif |
348 | #endif |
345 | |
349 | |
346 | /* this block fixes any misconfiguration where we know we run into trouble otherwise */ |
350 | /* this block fixes any misconfiguration where we know we run into trouble otherwise */ |
347 | |
351 | |
|
|
352 | #ifdef _AIX |
|
|
353 | /* AIX has a completely broken poll.h header */ |
|
|
354 | # undef EV_USE_POLL |
|
|
355 | # define EV_USE_POLL 0 |
|
|
356 | #endif |
|
|
357 | |
348 | #ifndef CLOCK_MONOTONIC |
358 | #ifndef CLOCK_MONOTONIC |
349 | # undef EV_USE_MONOTONIC |
359 | # undef EV_USE_MONOTONIC |
350 | # define EV_USE_MONOTONIC 0 |
360 | # define EV_USE_MONOTONIC 0 |
351 | #endif |
361 | #endif |
352 | |
362 | |
… | |
… | |
386 | # include <stdint.h> |
396 | # include <stdint.h> |
387 | # ifndef EFD_NONBLOCK |
397 | # ifndef EFD_NONBLOCK |
388 | # define EFD_NONBLOCK O_NONBLOCK |
398 | # define EFD_NONBLOCK O_NONBLOCK |
389 | # endif |
399 | # endif |
390 | # ifndef EFD_CLOEXEC |
400 | # ifndef EFD_CLOEXEC |
|
|
401 | # ifdef O_CLOEXEC |
391 | # define EFD_CLOEXEC O_CLOEXEC |
402 | # define EFD_CLOEXEC O_CLOEXEC |
|
|
403 | # else |
|
|
404 | # define EFD_CLOEXEC 02000000 |
|
|
405 | # endif |
392 | # endif |
406 | # endif |
393 | # ifdef __cplusplus |
407 | # ifdef __cplusplus |
394 | extern "C" { |
408 | extern "C" { |
395 | # endif |
409 | # endif |
396 | int eventfd (unsigned int initval, int flags); |
410 | int (eventfd) (unsigned int initval, int flags); |
397 | # ifdef __cplusplus |
411 | # ifdef __cplusplus |
398 | } |
412 | } |
399 | # endif |
413 | # endif |
400 | #endif |
414 | #endif |
401 | |
415 | |
402 | #if EV_USE_SIGNALFD |
416 | #if EV_USE_SIGNALFD |
403 | # include <sys/signalfd.h> |
417 | /* our minimum requirement is glibc 2.7 which has the stub, but not the header */ |
|
|
418 | # include <stdint.h> |
|
|
419 | # ifndef SFD_NONBLOCK |
|
|
420 | # define SFD_NONBLOCK O_NONBLOCK |
404 | #endif |
421 | # endif |
|
|
422 | # ifndef SFD_CLOEXEC |
|
|
423 | # ifdef O_CLOEXEC |
|
|
424 | # define SFD_CLOEXEC O_CLOEXEC |
|
|
425 | # else |
|
|
426 | # define SFD_CLOEXEC 02000000 |
|
|
427 | # endif |
|
|
428 | # endif |
|
|
429 | # ifdef __cplusplus |
|
|
430 | extern "C" { |
|
|
431 | # endif |
|
|
432 | int signalfd (int fd, const sigset_t *mask, int flags); |
|
|
433 | |
|
|
434 | struct signalfd_siginfo |
|
|
435 | { |
|
|
436 | uint32_t ssi_signo; |
|
|
437 | char pad[128 - sizeof (uint32_t)]; |
|
|
438 | }; |
|
|
439 | # ifdef __cplusplus |
|
|
440 | } |
|
|
441 | # endif |
|
|
442 | #endif |
|
|
443 | |
405 | |
444 | |
406 | /**/ |
445 | /**/ |
407 | |
446 | |
408 | #if EV_VERIFY >= 3 |
447 | #if EV_VERIFY >= 3 |
409 | # define EV_FREQUENT_CHECK ev_loop_verify (EV_A) |
448 | # define EV_FREQUENT_CHECK ev_loop_verify (EV_A) |
… | |
… | |
421 | */ |
460 | */ |
422 | #define TIME_EPSILON 0.0001220703125 /* 1/8192 */ |
461 | #define TIME_EPSILON 0.0001220703125 /* 1/8192 */ |
423 | |
462 | |
424 | #define MIN_TIMEJUMP 1. /* minimum timejump that gets detected (if monotonic clock available) */ |
463 | #define MIN_TIMEJUMP 1. /* minimum timejump that gets detected (if monotonic clock available) */ |
425 | #define MAX_BLOCKTIME 59.743 /* never wait longer than this time (to detect time jumps) */ |
464 | #define MAX_BLOCKTIME 59.743 /* never wait longer than this time (to detect time jumps) */ |
426 | /*#define CLEANUP_INTERVAL (MAX_BLOCKTIME * 5.) /* how often to try to free memory and re-check fds, TODO */ |
|
|
427 | |
465 | |
428 | #if __GNUC__ >= 4 |
466 | #if __GNUC__ >= 4 |
429 | # define expect(expr,value) __builtin_expect ((expr),(value)) |
467 | # define expect(expr,value) __builtin_expect ((expr),(value)) |
430 | # define noinline __attribute__ ((noinline)) |
468 | # define noinline __attribute__ ((noinline)) |
431 | #else |
469 | #else |
… | |
… | |
472 | |
510 | |
473 | #if EV_USE_MONOTONIC |
511 | #if EV_USE_MONOTONIC |
474 | static EV_ATOMIC_T have_monotonic; /* did clock_gettime (CLOCK_MONOTONIC) work? */ |
512 | static EV_ATOMIC_T have_monotonic; /* did clock_gettime (CLOCK_MONOTONIC) work? */ |
475 | #endif |
513 | #endif |
476 | |
514 | |
|
|
515 | #ifndef EV_FD_TO_WIN32_HANDLE |
|
|
516 | # define EV_FD_TO_WIN32_HANDLE(fd) _get_osfhandle (fd) |
|
|
517 | #endif |
|
|
518 | #ifndef EV_WIN32_HANDLE_TO_FD |
|
|
519 | # define EV_WIN32_HANDLE_TO_FD(handle) _open_osfhandle (handle, 0) |
|
|
520 | #endif |
|
|
521 | #ifndef EV_WIN32_CLOSE_FD |
|
|
522 | # define EV_WIN32_CLOSE_FD(fd) close (fd) |
|
|
523 | #endif |
|
|
524 | |
477 | #ifdef _WIN32 |
525 | #ifdef _WIN32 |
478 | # include "ev_win32.c" |
526 | # include "ev_win32.c" |
479 | #endif |
527 | #endif |
480 | |
528 | |
481 | /*****************************************************************************/ |
529 | /*****************************************************************************/ |
|
|
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 |
482 | |
538 | |
483 | static void (*syserr_cb)(const char *msg); |
539 | static void (*syserr_cb)(const char *msg); |
484 | |
540 | |
485 | void |
541 | void |
486 | ev_set_syserr_cb (void (*cb)(const char *msg)) |
542 | ev_set_syserr_cb (void (*cb)(const char *msg)) |
… | |
… | |
496 | |
552 | |
497 | if (syserr_cb) |
553 | if (syserr_cb) |
498 | syserr_cb (msg); |
554 | syserr_cb (msg); |
499 | else |
555 | else |
500 | { |
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 |
501 | perror (msg); |
565 | perror (msg); |
|
|
566 | #endif |
502 | abort (); |
567 | abort (); |
503 | } |
568 | } |
504 | } |
569 | } |
505 | |
570 | |
506 | static void * |
571 | static void * |
507 | ev_realloc_emul (void *ptr, long size) |
572 | ev_realloc_emul (void *ptr, long size) |
508 | { |
573 | { |
|
|
574 | #if __GLIBC__ |
|
|
575 | return realloc (ptr, size); |
|
|
576 | #else |
509 | /* some systems, notably openbsd and darwin, fail to properly |
577 | /* some systems, notably openbsd and darwin, fail to properly |
510 | * 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 |
511 | * the single unix specification, so work around them here. |
579 | * the single unix specification, so work around them here. |
512 | */ |
580 | */ |
513 | |
581 | |
514 | if (size) |
582 | if (size) |
515 | return realloc (ptr, size); |
583 | return realloc (ptr, size); |
516 | |
584 | |
517 | free (ptr); |
585 | free (ptr); |
518 | return 0; |
586 | return 0; |
|
|
587 | #endif |
519 | } |
588 | } |
520 | |
589 | |
521 | static void *(*alloc)(void *ptr, long size) = ev_realloc_emul; |
590 | static void *(*alloc)(void *ptr, long size) = ev_realloc_emul; |
522 | |
591 | |
523 | void |
592 | void |
… | |
… | |
531 | { |
600 | { |
532 | ptr = alloc (ptr, size); |
601 | ptr = alloc (ptr, size); |
533 | |
602 | |
534 | if (!ptr && size) |
603 | if (!ptr && size) |
535 | { |
604 | { |
|
|
605 | #if EV_AVOID_STDIO |
|
|
606 | ev_printerr ("libev: memory allocation failed, aborting.\n"); |
|
|
607 | #else |
536 | fprintf (stderr, "libev: cannot allocate %ld bytes, aborting.", size); |
608 | fprintf (stderr, "libev: cannot allocate %ld bytes, aborting.", size); |
|
|
609 | #endif |
537 | abort (); |
610 | abort (); |
538 | } |
611 | } |
539 | |
612 | |
540 | return ptr; |
613 | return ptr; |
541 | } |
614 | } |
… | |
… | |
872 | |
945 | |
873 | #if EV_SELECT_IS_WINSOCKET |
946 | #if EV_SELECT_IS_WINSOCKET |
874 | if (events) |
947 | if (events) |
875 | { |
948 | { |
876 | unsigned long arg; |
949 | unsigned long arg; |
877 | #ifdef EV_FD_TO_WIN32_HANDLE |
|
|
878 | anfd->handle = EV_FD_TO_WIN32_HANDLE (fd); |
950 | anfd->handle = EV_FD_TO_WIN32_HANDLE (fd); |
879 | #else |
|
|
880 | anfd->handle = _get_osfhandle (fd); |
|
|
881 | #endif |
|
|
882 | assert (("libev: only socket fds supported in this configuration", ioctlsocket (anfd->handle, FIONREAD, &arg) == 0)); |
951 | assert (("libev: only socket fds supported in this configuration", ioctlsocket (anfd->handle, FIONREAD, &arg) == 0)); |
883 | } |
952 | } |
884 | #endif |
953 | #endif |
885 | |
954 | |
886 | { |
955 | { |
… | |
… | |
924 | ev_io_stop (EV_A_ w); |
993 | ev_io_stop (EV_A_ w); |
925 | 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); |
926 | } |
995 | } |
927 | } |
996 | } |
928 | |
997 | |
929 | /* check whether the given fd is atcually valid, for error recovery */ |
998 | /* check whether the given fd is actually valid, for error recovery */ |
930 | inline_size int |
999 | inline_size int |
931 | fd_valid (int fd) |
1000 | fd_valid (int fd) |
932 | { |
1001 | { |
933 | #ifdef _WIN32 |
1002 | #ifdef _WIN32 |
934 | return _get_osfhandle (fd) != -1; |
1003 | return EV_FD_TO_WIN32_HANDLE (fd) != -1; |
935 | #else |
1004 | #else |
936 | return fcntl (fd, F_GETFD) != -1; |
1005 | return fcntl (fd, F_GETFD) != -1; |
937 | #endif |
1006 | #endif |
938 | } |
1007 | } |
939 | |
1008 | |
… | |
… | |
974 | { |
1043 | { |
975 | anfds [fd].events = 0; |
1044 | anfds [fd].events = 0; |
976 | anfds [fd].emask = 0; |
1045 | anfds [fd].emask = 0; |
977 | fd_change (EV_A_ fd, EV__IOFDSET | EV_ANFD_REIFY); |
1046 | fd_change (EV_A_ fd, EV__IOFDSET | EV_ANFD_REIFY); |
978 | } |
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 |
979 | } |
1062 | } |
980 | |
1063 | |
981 | /*****************************************************************************/ |
1064 | /*****************************************************************************/ |
982 | |
1065 | |
983 | /* |
1066 | /* |
… | |
… | |
1057 | |
1140 | |
1058 | for (;;) |
1141 | for (;;) |
1059 | { |
1142 | { |
1060 | int c = k << 1; |
1143 | int c = k << 1; |
1061 | |
1144 | |
1062 | if (c > N + HEAP0 - 1) |
1145 | if (c >= N + HEAP0) |
1063 | break; |
1146 | break; |
1064 | |
1147 | |
1065 | c += c + 1 < N + HEAP0 && ANHE_at (heap [c]) > ANHE_at (heap [c + 1]) |
1148 | c += c + 1 < N + HEAP0 && ANHE_at (heap [c]) > ANHE_at (heap [c + 1]) |
1066 | ? 1 : 0; |
1149 | ? 1 : 0; |
1067 | |
1150 | |
… | |
… | |
1103 | |
1186 | |
1104 | /* move an element suitably so it is in a correct place */ |
1187 | /* move an element suitably so it is in a correct place */ |
1105 | inline_size void |
1188 | inline_size void |
1106 | adjustheap (ANHE *heap, int N, int k) |
1189 | adjustheap (ANHE *heap, int N, int k) |
1107 | { |
1190 | { |
1108 | if (k > HEAP0 && ANHE_at (heap [HPARENT (k)]) >= ANHE_at (heap [k])) |
1191 | if (k > HEAP0 && ANHE_at (heap [k]) <= ANHE_at (heap [HPARENT (k)])) |
1109 | upheap (heap, k); |
1192 | upheap (heap, k); |
1110 | else |
1193 | else |
1111 | downheap (heap, N, k); |
1194 | downheap (heap, N, k); |
1112 | } |
1195 | } |
1113 | |
1196 | |
… | |
… | |
1137 | |
1220 | |
1138 | static ANSIG signals [EV_NSIG - 1]; |
1221 | static ANSIG signals [EV_NSIG - 1]; |
1139 | |
1222 | |
1140 | /*****************************************************************************/ |
1223 | /*****************************************************************************/ |
1141 | |
1224 | |
1142 | /* used to prepare libev internal fd's */ |
1225 | #if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE |
1143 | /* this is not fork-safe */ |
|
|
1144 | inline_speed void |
|
|
1145 | fd_intern (int fd) |
|
|
1146 | { |
|
|
1147 | #ifdef _WIN32 |
|
|
1148 | unsigned long arg = 1; |
|
|
1149 | ioctlsocket (_get_osfhandle (fd), FIONBIO, &arg); |
|
|
1150 | #else |
|
|
1151 | fcntl (fd, F_SETFD, FD_CLOEXEC); |
|
|
1152 | fcntl (fd, F_SETFL, O_NONBLOCK); |
|
|
1153 | #endif |
|
|
1154 | } |
|
|
1155 | |
1226 | |
1156 | static void noinline |
1227 | static void noinline |
1157 | evpipe_init (EV_P) |
1228 | evpipe_init (EV_P) |
1158 | { |
1229 | { |
1159 | if (!ev_is_active (&pipe_w)) |
1230 | if (!ev_is_active (&pipe_w)) |
1160 | { |
1231 | { |
1161 | #if EV_USE_EVENTFD |
1232 | # if EV_USE_EVENTFD |
1162 | evfd = eventfd (0, EFD_NONBLOCK | EFD_CLOEXEC); |
1233 | evfd = eventfd (0, EFD_NONBLOCK | EFD_CLOEXEC); |
1163 | if (evfd < 0 && errno == EINVAL) |
1234 | if (evfd < 0 && errno == EINVAL) |
1164 | evfd = eventfd (0, 0); |
1235 | evfd = eventfd (0, 0); |
1165 | |
1236 | |
1166 | if (evfd >= 0) |
1237 | if (evfd >= 0) |
… | |
… | |
1168 | evpipe [0] = -1; |
1239 | evpipe [0] = -1; |
1169 | fd_intern (evfd); /* doing it twice doesn't hurt */ |
1240 | fd_intern (evfd); /* doing it twice doesn't hurt */ |
1170 | ev_io_set (&pipe_w, evfd, EV_READ); |
1241 | ev_io_set (&pipe_w, evfd, EV_READ); |
1171 | } |
1242 | } |
1172 | else |
1243 | else |
1173 | #endif |
1244 | # endif |
1174 | { |
1245 | { |
1175 | while (pipe (evpipe)) |
1246 | while (pipe (evpipe)) |
1176 | ev_syserr ("(libev) error creating signal/async pipe"); |
1247 | ev_syserr ("(libev) error creating signal/async pipe"); |
1177 | |
1248 | |
1178 | fd_intern (evpipe [0]); |
1249 | fd_intern (evpipe [0]); |
… | |
… | |
1189 | evpipe_write (EV_P_ EV_ATOMIC_T *flag) |
1260 | evpipe_write (EV_P_ EV_ATOMIC_T *flag) |
1190 | { |
1261 | { |
1191 | if (!*flag) |
1262 | if (!*flag) |
1192 | { |
1263 | { |
1193 | 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; |
1194 | |
1266 | |
1195 | *flag = 1; |
1267 | *flag = 1; |
1196 | |
1268 | |
1197 | #if EV_USE_EVENTFD |
1269 | #if EV_USE_EVENTFD |
1198 | if (evfd >= 0) |
1270 | if (evfd >= 0) |
… | |
… | |
1200 | uint64_t counter = 1; |
1272 | uint64_t counter = 1; |
1201 | write (evfd, &counter, sizeof (uint64_t)); |
1273 | write (evfd, &counter, sizeof (uint64_t)); |
1202 | } |
1274 | } |
1203 | else |
1275 | else |
1204 | #endif |
1276 | #endif |
1205 | write (evpipe [1], &old_errno, 1); |
1277 | write (evpipe [1], &dummy, 1); |
1206 | |
1278 | |
1207 | errno = old_errno; |
1279 | errno = old_errno; |
1208 | } |
1280 | } |
1209 | } |
1281 | } |
1210 | |
1282 | |
… | |
… | |
1259 | { |
1331 | { |
1260 | #if EV_MULTIPLICITY |
1332 | #if EV_MULTIPLICITY |
1261 | EV_P = signals [signum - 1].loop; |
1333 | EV_P = signals [signum - 1].loop; |
1262 | #endif |
1334 | #endif |
1263 | |
1335 | |
1264 | #if _WIN32 |
1336 | #ifdef _WIN32 |
1265 | signal (signum, ev_sighandler); |
1337 | signal (signum, ev_sighandler); |
1266 | #endif |
1338 | #endif |
1267 | |
1339 | |
1268 | signals [signum - 1].pending = 1; |
1340 | signals [signum - 1].pending = 1; |
1269 | evpipe_write (EV_A_ &sig_pending); |
1341 | evpipe_write (EV_A_ &sig_pending); |
… | |
… | |
1311 | break; |
1383 | break; |
1312 | } |
1384 | } |
1313 | } |
1385 | } |
1314 | #endif |
1386 | #endif |
1315 | |
1387 | |
|
|
1388 | #endif |
|
|
1389 | |
1316 | /*****************************************************************************/ |
1390 | /*****************************************************************************/ |
1317 | |
1391 | |
|
|
1392 | #if EV_CHILD_ENABLE |
1318 | static WL childs [EV_PID_HASHSIZE]; |
1393 | static WL childs [EV_PID_HASHSIZE]; |
1319 | |
|
|
1320 | #ifndef _WIN32 |
|
|
1321 | |
1394 | |
1322 | static ev_signal childev; |
1395 | static ev_signal childev; |
1323 | |
1396 | |
1324 | #ifndef WIFCONTINUED |
1397 | #ifndef WIFCONTINUED |
1325 | # define WIFCONTINUED(status) 0 |
1398 | # define WIFCONTINUED(status) 0 |
… | |
… | |
1570 | #endif |
1643 | #endif |
1571 | #if EV_USE_INOTIFY |
1644 | #if EV_USE_INOTIFY |
1572 | fs_fd = flags & EVFLAG_NOINOTIFY ? -1 : -2; |
1645 | fs_fd = flags & EVFLAG_NOINOTIFY ? -1 : -2; |
1573 | #endif |
1646 | #endif |
1574 | #if EV_USE_SIGNALFD |
1647 | #if EV_USE_SIGNALFD |
1575 | sigfd = flags & EVFLAG_NOSIGFD ? -1 : -2; |
1648 | sigfd = flags & EVFLAG_SIGNALFD ? -2 : -1; |
1576 | #endif |
1649 | #endif |
1577 | |
1650 | |
1578 | if (!(flags & 0x0000ffffU)) |
1651 | if (!(flags & 0x0000ffffU)) |
1579 | flags |= ev_recommended_backends (); |
1652 | flags |= ev_recommended_backends (); |
1580 | |
1653 | |
… | |
… | |
1594 | if (!backend && (flags & EVBACKEND_SELECT)) backend = select_init (EV_A_ flags); |
1667 | if (!backend && (flags & EVBACKEND_SELECT)) backend = select_init (EV_A_ flags); |
1595 | #endif |
1668 | #endif |
1596 | |
1669 | |
1597 | ev_prepare_init (&pending_w, pendingcb); |
1670 | ev_prepare_init (&pending_w, pendingcb); |
1598 | |
1671 | |
|
|
1672 | #if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE |
1599 | ev_init (&pipe_w, pipecb); |
1673 | ev_init (&pipe_w, pipecb); |
1600 | ev_set_priority (&pipe_w, EV_MAXPRI); |
1674 | ev_set_priority (&pipe_w, EV_MAXPRI); |
|
|
1675 | #endif |
1601 | } |
1676 | } |
1602 | } |
1677 | } |
1603 | |
1678 | |
1604 | /* free up a loop structure */ |
1679 | /* free up a loop structure */ |
1605 | static void noinline |
1680 | static void noinline |
… | |
… | |
1617 | close (evfd); |
1692 | close (evfd); |
1618 | #endif |
1693 | #endif |
1619 | |
1694 | |
1620 | if (evpipe [0] >= 0) |
1695 | if (evpipe [0] >= 0) |
1621 | { |
1696 | { |
1622 | close (evpipe [0]); |
1697 | EV_WIN32_CLOSE_FD (evpipe [0]); |
1623 | close (evpipe [1]); |
1698 | EV_WIN32_CLOSE_FD (evpipe [1]); |
1624 | } |
1699 | } |
1625 | } |
1700 | } |
1626 | |
1701 | |
1627 | #if EV_USE_SIGNALFD |
1702 | #if EV_USE_SIGNALFD |
1628 | if (ev_is_active (&sigfd_w)) |
1703 | if (ev_is_active (&sigfd_w)) |
1629 | { |
|
|
1630 | /*ev_ref (EV_A);*/ |
|
|
1631 | /*ev_io_stop (EV_A_ &sigfd_w);*/ |
|
|
1632 | |
|
|
1633 | close (sigfd); |
1704 | close (sigfd); |
1634 | } |
|
|
1635 | #endif |
1705 | #endif |
1636 | |
1706 | |
1637 | #if EV_USE_INOTIFY |
1707 | #if EV_USE_INOTIFY |
1638 | if (fs_fd >= 0) |
1708 | if (fs_fd >= 0) |
1639 | close (fs_fd); |
1709 | close (fs_fd); |
… | |
… | |
1724 | close (evfd); |
1794 | close (evfd); |
1725 | #endif |
1795 | #endif |
1726 | |
1796 | |
1727 | if (evpipe [0] >= 0) |
1797 | if (evpipe [0] >= 0) |
1728 | { |
1798 | { |
1729 | close (evpipe [0]); |
1799 | EV_WIN32_CLOSE_FD (evpipe [0]); |
1730 | close (evpipe [1]); |
1800 | EV_WIN32_CLOSE_FD (evpipe [1]); |
1731 | } |
1801 | } |
1732 | |
1802 | |
1733 | evpipe_init (EV_A); |
1803 | evpipe_init (EV_A); |
1734 | /* now iterate over everything, in case we missed something */ |
1804 | /* now iterate over everything, in case we missed something */ |
1735 | pipecb (EV_A_ &pipe_w, EV_READ); |
1805 | pipecb (EV_A_ &pipe_w, EV_READ); |
… | |
… | |
1860 | |
1930 | |
1861 | assert (checkmax >= checkcnt); |
1931 | assert (checkmax >= checkcnt); |
1862 | array_verify (EV_A_ (W *)checks, checkcnt); |
1932 | array_verify (EV_A_ (W *)checks, checkcnt); |
1863 | |
1933 | |
1864 | # if 0 |
1934 | # if 0 |
|
|
1935 | #if EV_CHILD_ENABLE |
1865 | 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) |
1866 | for (signum = EV_NSIG; signum--; ) if (signals [signum].pending) |
1937 | for (signum = EV_NSIG; signum--; ) if (signals [signum].pending) |
|
|
1938 | #endif |
1867 | # endif |
1939 | # endif |
1868 | #endif |
1940 | #endif |
1869 | } |
1941 | } |
1870 | #endif |
1942 | #endif |
1871 | |
1943 | |
… | |
… | |
1887 | |
1959 | |
1888 | loop_init (EV_A_ flags); |
1960 | loop_init (EV_A_ flags); |
1889 | |
1961 | |
1890 | if (ev_backend (EV_A)) |
1962 | if (ev_backend (EV_A)) |
1891 | { |
1963 | { |
1892 | #ifndef _WIN32 |
1964 | #if EV_CHILD_ENABLE |
1893 | ev_signal_init (&childev, childcb, SIGCHLD); |
1965 | ev_signal_init (&childev, childcb, SIGCHLD); |
1894 | ev_set_priority (&childev, EV_MAXPRI); |
1966 | ev_set_priority (&childev, EV_MAXPRI); |
1895 | ev_signal_start (EV_A_ &childev); |
1967 | ev_signal_start (EV_A_ &childev); |
1896 | ev_unref (EV_A); /* child watcher should not keep loop alive */ |
1968 | ev_unref (EV_A); /* child watcher should not keep loop alive */ |
1897 | #endif |
1969 | #endif |
… | |
… | |
1910 | EV_P = ev_default_loop_ptr; |
1982 | EV_P = ev_default_loop_ptr; |
1911 | #endif |
1983 | #endif |
1912 | |
1984 | |
1913 | ev_default_loop_ptr = 0; |
1985 | ev_default_loop_ptr = 0; |
1914 | |
1986 | |
1915 | #ifndef _WIN32 |
1987 | #if EV_CHILD_ENABLE |
1916 | ev_ref (EV_A); /* child watcher */ |
1988 | ev_ref (EV_A); /* child watcher */ |
1917 | ev_signal_stop (EV_A_ &childev); |
1989 | ev_signal_stop (EV_A_ &childev); |
1918 | #endif |
1990 | #endif |
1919 | |
1991 | |
1920 | loop_destroy (EV_A); |
1992 | loop_destroy (EV_A); |
… | |
… | |
2127 | ANHE_at_cache (*he); |
2199 | ANHE_at_cache (*he); |
2128 | } |
2200 | } |
2129 | } |
2201 | } |
2130 | |
2202 | |
2131 | /* fetch new monotonic and realtime times from the kernel */ |
2203 | /* fetch new monotonic and realtime times from the kernel */ |
2132 | /* also detetc if there was a timejump, and act accordingly */ |
2204 | /* also detect if there was a timejump, and act accordingly */ |
2133 | inline_speed void |
2205 | inline_speed void |
2134 | time_update (EV_P_ ev_tstamp max_block) |
2206 | time_update (EV_P_ ev_tstamp max_block) |
2135 | { |
2207 | { |
2136 | #if EV_USE_MONOTONIC |
2208 | #if EV_USE_MONOTONIC |
2137 | if (expect_true (have_monotonic)) |
2209 | if (expect_true (have_monotonic)) |
… | |
… | |
2471 | |
2543 | |
2472 | if (expect_false (ev_is_active (w))) |
2544 | if (expect_false (ev_is_active (w))) |
2473 | return; |
2545 | return; |
2474 | |
2546 | |
2475 | assert (("libev: ev_io_start called with negative fd", fd >= 0)); |
2547 | assert (("libev: ev_io_start called with negative fd", fd >= 0)); |
2476 | 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)))); |
2477 | |
2549 | |
2478 | EV_FREQUENT_CHECK; |
2550 | EV_FREQUENT_CHECK; |
2479 | |
2551 | |
2480 | ev_start (EV_A_ (W)w, 1); |
2552 | ev_start (EV_A_ (W)w, 1); |
2481 | array_needsize (ANFD, anfds, anfdmax, fd + 1, array_init_zero); |
2553 | array_needsize (ANFD, anfds, anfdmax, fd + 1, array_init_zero); |
… | |
… | |
2551 | timers [active] = timers [timercnt + HEAP0]; |
2623 | timers [active] = timers [timercnt + HEAP0]; |
2552 | adjustheap (timers, timercnt, active); |
2624 | adjustheap (timers, timercnt, active); |
2553 | } |
2625 | } |
2554 | } |
2626 | } |
2555 | |
2627 | |
2556 | EV_FREQUENT_CHECK; |
|
|
2557 | |
|
|
2558 | ev_at (w) -= mn_now; |
2628 | ev_at (w) -= mn_now; |
2559 | |
2629 | |
2560 | ev_stop (EV_A_ (W)w); |
2630 | ev_stop (EV_A_ (W)w); |
|
|
2631 | |
|
|
2632 | EV_FREQUENT_CHECK; |
2561 | } |
2633 | } |
2562 | |
2634 | |
2563 | void noinline |
2635 | void noinline |
2564 | ev_timer_again (EV_P_ ev_timer *w) |
2636 | ev_timer_again (EV_P_ ev_timer *w) |
2565 | { |
2637 | { |
… | |
… | |
2644 | periodics [active] = periodics [periodiccnt + HEAP0]; |
2716 | periodics [active] = periodics [periodiccnt + HEAP0]; |
2645 | adjustheap (periodics, periodiccnt, active); |
2717 | adjustheap (periodics, periodiccnt, active); |
2646 | } |
2718 | } |
2647 | } |
2719 | } |
2648 | |
2720 | |
2649 | EV_FREQUENT_CHECK; |
|
|
2650 | |
|
|
2651 | ev_stop (EV_A_ (W)w); |
2721 | ev_stop (EV_A_ (W)w); |
|
|
2722 | |
|
|
2723 | EV_FREQUENT_CHECK; |
2652 | } |
2724 | } |
2653 | |
2725 | |
2654 | void noinline |
2726 | void noinline |
2655 | ev_periodic_again (EV_P_ ev_periodic *w) |
2727 | ev_periodic_again (EV_P_ ev_periodic *w) |
2656 | { |
2728 | { |
… | |
… | |
2662 | |
2734 | |
2663 | #ifndef SA_RESTART |
2735 | #ifndef SA_RESTART |
2664 | # define SA_RESTART 0 |
2736 | # define SA_RESTART 0 |
2665 | #endif |
2737 | #endif |
2666 | |
2738 | |
|
|
2739 | #if EV_SIGNAL_ENABLE |
|
|
2740 | |
2667 | void noinline |
2741 | void noinline |
2668 | ev_signal_start (EV_P_ ev_signal *w) |
2742 | ev_signal_start (EV_P_ ev_signal *w) |
2669 | { |
2743 | { |
2670 | if (expect_false (ev_is_active (w))) |
2744 | if (expect_false (ev_is_active (w))) |
2671 | return; |
2745 | return; |
2672 | |
2746 | |
2673 | assert (("libev: ev_signal_start called with illegal signal number", w->signum > 0 && w->signum < EV_NSIG)); |
2747 | assert (("libev: ev_signal_start called with illegal signal number", w->signum > 0 && w->signum < EV_NSIG)); |
2674 | |
2748 | |
2675 | #if EV_MULTIPLICITY |
2749 | #if EV_MULTIPLICITY |
2676 | assert (("libev: tried to attach to a signal from two different loops", |
2750 | assert (("libev: a signal must not be attached to two different loops", |
2677 | !signals [w->signum - 1].loop || signals [w->signum - 1].loop == loop)); |
2751 | !signals [w->signum - 1].loop || signals [w->signum - 1].loop == loop)); |
2678 | |
2752 | |
2679 | signals [w->signum - 1].loop = EV_A; |
2753 | signals [w->signum - 1].loop = EV_A; |
2680 | #endif |
2754 | #endif |
2681 | |
2755 | |
… | |
… | |
2717 | if (!((WL)w)->next) |
2791 | if (!((WL)w)->next) |
2718 | # if EV_USE_SIGNALFD |
2792 | # if EV_USE_SIGNALFD |
2719 | if (sigfd < 0) /*TODO*/ |
2793 | if (sigfd < 0) /*TODO*/ |
2720 | # endif |
2794 | # endif |
2721 | { |
2795 | { |
2722 | # if _WIN32 |
2796 | # ifdef _WIN32 |
|
|
2797 | evpipe_init (EV_A); |
|
|
2798 | |
2723 | signal (w->signum, ev_sighandler); |
2799 | signal (w->signum, ev_sighandler); |
2724 | # else |
2800 | # else |
2725 | struct sigaction sa; |
2801 | struct sigaction sa; |
2726 | |
2802 | |
2727 | evpipe_init (EV_A); |
2803 | evpipe_init (EV_A); |
… | |
… | |
2758 | signals [w->signum - 1].loop = 0; /* unattach from signal */ |
2834 | signals [w->signum - 1].loop = 0; /* unattach from signal */ |
2759 | #endif |
2835 | #endif |
2760 | #if EV_USE_SIGNALFD |
2836 | #if EV_USE_SIGNALFD |
2761 | if (sigfd >= 0) |
2837 | if (sigfd >= 0) |
2762 | { |
2838 | { |
2763 | sigprocmask (SIG_UNBLOCK, &sigfd_set, 0);//D |
2839 | sigset_t ss; |
|
|
2840 | |
|
|
2841 | sigemptyset (&ss); |
|
|
2842 | sigaddset (&ss, w->signum); |
2764 | sigdelset (&sigfd_set, w->signum); |
2843 | sigdelset (&sigfd_set, w->signum); |
|
|
2844 | |
2765 | signalfd (sigfd, &sigfd_set, 0); |
2845 | signalfd (sigfd, &sigfd_set, 0); |
2766 | sigprocmask (SIG_BLOCK, &sigfd_set, 0);//D |
2846 | sigprocmask (SIG_UNBLOCK, &ss, 0); |
2767 | /*TODO: maybe unblock signal? */ |
|
|
2768 | } |
2847 | } |
2769 | else |
2848 | else |
2770 | #endif |
2849 | #endif |
2771 | signal (w->signum, SIG_DFL); |
2850 | signal (w->signum, SIG_DFL); |
2772 | } |
2851 | } |
2773 | |
2852 | |
2774 | EV_FREQUENT_CHECK; |
2853 | EV_FREQUENT_CHECK; |
2775 | } |
2854 | } |
|
|
2855 | |
|
|
2856 | #endif |
|
|
2857 | |
|
|
2858 | #if EV_CHILD_ENABLE |
2776 | |
2859 | |
2777 | void |
2860 | void |
2778 | ev_child_start (EV_P_ ev_child *w) |
2861 | ev_child_start (EV_P_ ev_child *w) |
2779 | { |
2862 | { |
2780 | #if EV_MULTIPLICITY |
2863 | #if EV_MULTIPLICITY |
… | |
… | |
2804 | ev_stop (EV_A_ (W)w); |
2887 | ev_stop (EV_A_ (W)w); |
2805 | |
2888 | |
2806 | EV_FREQUENT_CHECK; |
2889 | EV_FREQUENT_CHECK; |
2807 | } |
2890 | } |
2808 | |
2891 | |
|
|
2892 | #endif |
|
|
2893 | |
2809 | #if EV_STAT_ENABLE |
2894 | #if EV_STAT_ENABLE |
2810 | |
2895 | |
2811 | # ifdef _WIN32 |
2896 | # ifdef _WIN32 |
2812 | # undef lstat |
2897 | # undef lstat |
2813 | # define lstat(a,b) _stati64 (a,b) |
2898 | # define lstat(a,b) _stati64 (a,b) |
… | |
… | |
2818 | #define MIN_STAT_INTERVAL 0.1074891 |
2903 | #define MIN_STAT_INTERVAL 0.1074891 |
2819 | |
2904 | |
2820 | 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); |
2821 | |
2906 | |
2822 | #if EV_USE_INOTIFY |
2907 | #if EV_USE_INOTIFY |
2823 | # 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) |
2824 | |
2911 | |
2825 | static void noinline |
2912 | static void noinline |
2826 | infy_add (EV_P_ ev_stat *w) |
2913 | infy_add (EV_P_ ev_stat *w) |
2827 | { |
2914 | { |
2828 | 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); |
2829 | |
2916 | |
2830 | if (w->wd < 0) |
2917 | if (w->wd >= 0) |
|
|
2918 | { |
|
|
2919 | struct statfs sfs; |
|
|
2920 | |
|
|
2921 | /* now local changes will be tracked by inotify, but remote changes won't */ |
|
|
2922 | /* unless the filesystem is known to be local, we therefore still poll */ |
|
|
2923 | /* also do poll on <2.6.25, but with normal frequency */ |
|
|
2924 | |
|
|
2925 | if (!fs_2625) |
|
|
2926 | w->timer.repeat = w->interval ? w->interval : DEF_STAT_INTERVAL; |
|
|
2927 | else if (!statfs (w->path, &sfs) |
|
|
2928 | && (sfs.f_type == 0x1373 /* devfs */ |
|
|
2929 | || sfs.f_type == 0xEF53 /* ext2/3 */ |
|
|
2930 | || sfs.f_type == 0x3153464a /* jfs */ |
|
|
2931 | || sfs.f_type == 0x52654973 /* reiser3 */ |
|
|
2932 | || sfs.f_type == 0x01021994 /* tempfs */ |
|
|
2933 | || sfs.f_type == 0x58465342 /* xfs */)) |
|
|
2934 | w->timer.repeat = 0.; /* filesystem is local, kernel new enough */ |
|
|
2935 | else |
|
|
2936 | w->timer.repeat = w->interval ? w->interval : NFS_STAT_INTERVAL; /* remote, use reduced frequency */ |
2831 | { |
2937 | } |
|
|
2938 | else |
|
|
2939 | { |
|
|
2940 | /* can't use inotify, continue to stat */ |
2832 | w->timer.repeat = w->interval ? w->interval : DEF_STAT_INTERVAL; |
2941 | w->timer.repeat = w->interval ? w->interval : DEF_STAT_INTERVAL; |
2833 | ev_timer_again (EV_A_ &w->timer); /* this is not race-free, so we still need to recheck periodically */ |
|
|
2834 | |
2942 | |
2835 | /* monitor some parent directory for speedup hints */ |
2943 | /* if path is not there, monitor some parent directory for speedup hints */ |
2836 | /* note that exceeding the hardcoded path limit is not a correctness issue, */ |
2944 | /* note that exceeding the hardcoded path limit is not a correctness issue, */ |
2837 | /* but an efficiency issue only */ |
2945 | /* but an efficiency issue only */ |
2838 | if ((errno == ENOENT || errno == EACCES) && strlen (w->path) < 4096) |
2946 | if ((errno == ENOENT || errno == EACCES) && strlen (w->path) < 4096) |
2839 | { |
2947 | { |
2840 | char path [4096]; |
2948 | char path [4096]; |
… | |
… | |
2856 | while (w->wd < 0 && (errno == ENOENT || errno == EACCES)); |
2964 | while (w->wd < 0 && (errno == ENOENT || errno == EACCES)); |
2857 | } |
2965 | } |
2858 | } |
2966 | } |
2859 | |
2967 | |
2860 | if (w->wd >= 0) |
2968 | if (w->wd >= 0) |
2861 | { |
|
|
2862 | wlist_add (&fs_hash [w->wd & (EV_INOTIFY_HASHSIZE - 1)].head, (WL)w); |
2969 | wlist_add (&fs_hash [w->wd & (EV_INOTIFY_HASHSIZE - 1)].head, (WL)w); |
2863 | |
2970 | |
2864 | /* now local changes will be tracked by inotify, but remote changes won't */ |
2971 | /* now re-arm timer, if required */ |
2865 | /* unless the filesystem it known to be local, we therefore still poll */ |
2972 | if (ev_is_active (&w->timer)) ev_ref (EV_A); |
2866 | /* also do poll on <2.6.25, but with normal frequency */ |
|
|
2867 | struct statfs sfs; |
|
|
2868 | |
|
|
2869 | if (fs_2625 && !statfs (w->path, &sfs)) |
|
|
2870 | if (sfs.f_type == 0x1373 /* devfs */ |
|
|
2871 | || sfs.f_type == 0xEF53 /* ext2/3 */ |
|
|
2872 | || sfs.f_type == 0x3153464a /* jfs */ |
|
|
2873 | || sfs.f_type == 0x52654973 /* reiser3 */ |
|
|
2874 | || sfs.f_type == 0x01021994 /* tempfs */ |
|
|
2875 | || sfs.f_type == 0x58465342 /* xfs */) |
|
|
2876 | return; |
|
|
2877 | |
|
|
2878 | w->timer.repeat = w->interval ? w->interval : fs_2625 ? NFS_STAT_INTERVAL : DEF_STAT_INTERVAL; |
|
|
2879 | ev_timer_again (EV_A_ &w->timer); |
2973 | ev_timer_again (EV_A_ &w->timer); |
2880 | } |
2974 | if (ev_is_active (&w->timer)) ev_unref (EV_A); |
2881 | } |
2975 | } |
2882 | |
2976 | |
2883 | static void noinline |
2977 | static void noinline |
2884 | infy_del (EV_P_ ev_stat *w) |
2978 | infy_del (EV_P_ ev_stat *w) |
2885 | { |
2979 | { |
… | |
… | |
2930 | |
3024 | |
2931 | static void |
3025 | static void |
2932 | infy_cb (EV_P_ ev_io *w, int revents) |
3026 | infy_cb (EV_P_ ev_io *w, int revents) |
2933 | { |
3027 | { |
2934 | char buf [EV_INOTIFY_BUFSIZE]; |
3028 | char buf [EV_INOTIFY_BUFSIZE]; |
2935 | struct inotify_event *ev = (struct inotify_event *)buf; |
|
|
2936 | int ofs; |
3029 | int ofs; |
2937 | int len = read (fs_fd, buf, sizeof (buf)); |
3030 | int len = read (fs_fd, buf, sizeof (buf)); |
2938 | |
3031 | |
2939 | 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); |
2940 | 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; |
2941 | } |
3070 | } |
2942 | |
3071 | |
2943 | inline_size void |
3072 | inline_size void |
2944 | check_2625 (EV_P) |
3073 | ev_check_2625 (EV_P) |
2945 | { |
3074 | { |
2946 | /* kernels < 2.6.25 are borked |
3075 | /* kernels < 2.6.25 are borked |
2947 | * 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 |
2948 | */ |
3077 | */ |
2949 | struct utsname buf; |
3078 | if (ev_linux_version () < 0x020619) |
2950 | int major, minor, micro; |
|
|
2951 | |
|
|
2952 | if (uname (&buf)) |
|
|
2953 | return; |
3079 | return; |
2954 | |
3080 | |
2955 | if (sscanf (buf.release, "%d.%d.%d", &major, &minor, µ) != 3) |
|
|
2956 | return; |
|
|
2957 | |
|
|
2958 | if (major < 2 |
|
|
2959 | || (major == 2 && minor < 6) |
|
|
2960 | || (major == 2 && minor == 6 && micro < 25)) |
|
|
2961 | return; |
|
|
2962 | |
|
|
2963 | fs_2625 = 1; |
3081 | fs_2625 = 1; |
|
|
3082 | } |
|
|
3083 | |
|
|
3084 | inline_size int |
|
|
3085 | infy_newfd (void) |
|
|
3086 | { |
|
|
3087 | #if defined (IN_CLOEXEC) && defined (IN_NONBLOCK) |
|
|
3088 | int fd = inotify_init1 (IN_CLOEXEC | IN_NONBLOCK); |
|
|
3089 | if (fd >= 0) |
|
|
3090 | return fd; |
|
|
3091 | #endif |
|
|
3092 | return inotify_init (); |
2964 | } |
3093 | } |
2965 | |
3094 | |
2966 | inline_size void |
3095 | inline_size void |
2967 | infy_init (EV_P) |
3096 | infy_init (EV_P) |
2968 | { |
3097 | { |
2969 | if (fs_fd != -2) |
3098 | if (fs_fd != -2) |
2970 | return; |
3099 | return; |
2971 | |
3100 | |
2972 | fs_fd = -1; |
3101 | fs_fd = -1; |
2973 | |
3102 | |
2974 | check_2625 (EV_A); |
3103 | ev_check_2625 (EV_A); |
2975 | |
3104 | |
2976 | fs_fd = inotify_init (); |
3105 | fs_fd = infy_newfd (); |
2977 | |
3106 | |
2978 | if (fs_fd >= 0) |
3107 | if (fs_fd >= 0) |
2979 | { |
3108 | { |
|
|
3109 | fd_intern (fs_fd); |
2980 | ev_io_init (&fs_w, infy_cb, fs_fd, EV_READ); |
3110 | ev_io_init (&fs_w, infy_cb, fs_fd, EV_READ); |
2981 | ev_set_priority (&fs_w, EV_MAXPRI); |
3111 | ev_set_priority (&fs_w, EV_MAXPRI); |
2982 | ev_io_start (EV_A_ &fs_w); |
3112 | ev_io_start (EV_A_ &fs_w); |
|
|
3113 | ev_unref (EV_A); |
2983 | } |
3114 | } |
2984 | } |
3115 | } |
2985 | |
3116 | |
2986 | inline_size void |
3117 | inline_size void |
2987 | infy_fork (EV_P) |
3118 | infy_fork (EV_P) |
… | |
… | |
2989 | int slot; |
3120 | int slot; |
2990 | |
3121 | |
2991 | if (fs_fd < 0) |
3122 | if (fs_fd < 0) |
2992 | return; |
3123 | return; |
2993 | |
3124 | |
|
|
3125 | ev_ref (EV_A); |
|
|
3126 | ev_io_stop (EV_A_ &fs_w); |
2994 | close (fs_fd); |
3127 | close (fs_fd); |
2995 | fs_fd = inotify_init (); |
3128 | fs_fd = infy_newfd (); |
|
|
3129 | |
|
|
3130 | if (fs_fd >= 0) |
|
|
3131 | { |
|
|
3132 | fd_intern (fs_fd); |
|
|
3133 | ev_io_set (&fs_w, fs_fd, EV_READ); |
|
|
3134 | ev_io_start (EV_A_ &fs_w); |
|
|
3135 | ev_unref (EV_A); |
|
|
3136 | } |
2996 | |
3137 | |
2997 | for (slot = 0; slot < EV_INOTIFY_HASHSIZE; ++slot) |
3138 | for (slot = 0; slot < EV_INOTIFY_HASHSIZE; ++slot) |
2998 | { |
3139 | { |
2999 | WL w_ = fs_hash [slot].head; |
3140 | WL w_ = fs_hash [slot].head; |
3000 | fs_hash [slot].head = 0; |
3141 | fs_hash [slot].head = 0; |
… | |
… | |
3007 | w->wd = -1; |
3148 | w->wd = -1; |
3008 | |
3149 | |
3009 | if (fs_fd >= 0) |
3150 | if (fs_fd >= 0) |
3010 | infy_add (EV_A_ w); /* re-add, no matter what */ |
3151 | infy_add (EV_A_ w); /* re-add, no matter what */ |
3011 | else |
3152 | else |
|
|
3153 | { |
|
|
3154 | w->timer.repeat = w->interval ? w->interval : DEF_STAT_INTERVAL; |
|
|
3155 | if (ev_is_active (&w->timer)) ev_ref (EV_A); |
3012 | ev_timer_again (EV_A_ &w->timer); |
3156 | ev_timer_again (EV_A_ &w->timer); |
|
|
3157 | if (ev_is_active (&w->timer)) ev_unref (EV_A); |
|
|
3158 | } |
3013 | } |
3159 | } |
3014 | } |
3160 | } |
3015 | } |
3161 | } |
3016 | |
3162 | |
3017 | #endif |
3163 | #endif |
… | |
… | |
3034 | static void noinline |
3180 | static void noinline |
3035 | stat_timer_cb (EV_P_ ev_timer *w_, int revents) |
3181 | stat_timer_cb (EV_P_ ev_timer *w_, int revents) |
3036 | { |
3182 | { |
3037 | ev_stat *w = (ev_stat *)(((char *)w_) - offsetof (ev_stat, timer)); |
3183 | ev_stat *w = (ev_stat *)(((char *)w_) - offsetof (ev_stat, timer)); |
3038 | |
3184 | |
3039 | /* we copy this here each the time so that */ |
3185 | ev_statdata prev = w->attr; |
3040 | /* prev has the old value when the callback gets invoked */ |
|
|
3041 | w->prev = w->attr; |
|
|
3042 | ev_stat_stat (EV_A_ w); |
3186 | ev_stat_stat (EV_A_ w); |
3043 | |
3187 | |
3044 | /* memcmp doesn't work on netbsd, they.... do stuff to their struct stat */ |
3188 | /* memcmp doesn't work on netbsd, they.... do stuff to their struct stat */ |
3045 | if ( |
3189 | if ( |
3046 | w->prev.st_dev != w->attr.st_dev |
3190 | prev.st_dev != w->attr.st_dev |
3047 | || w->prev.st_ino != w->attr.st_ino |
3191 | || prev.st_ino != w->attr.st_ino |
3048 | || w->prev.st_mode != w->attr.st_mode |
3192 | || prev.st_mode != w->attr.st_mode |
3049 | || w->prev.st_nlink != w->attr.st_nlink |
3193 | || prev.st_nlink != w->attr.st_nlink |
3050 | || w->prev.st_uid != w->attr.st_uid |
3194 | || prev.st_uid != w->attr.st_uid |
3051 | || w->prev.st_gid != w->attr.st_gid |
3195 | || prev.st_gid != w->attr.st_gid |
3052 | || w->prev.st_rdev != w->attr.st_rdev |
3196 | || prev.st_rdev != w->attr.st_rdev |
3053 | || w->prev.st_size != w->attr.st_size |
3197 | || prev.st_size != w->attr.st_size |
3054 | || w->prev.st_atime != w->attr.st_atime |
3198 | || prev.st_atime != w->attr.st_atime |
3055 | || w->prev.st_mtime != w->attr.st_mtime |
3199 | || prev.st_mtime != w->attr.st_mtime |
3056 | || w->prev.st_ctime != w->attr.st_ctime |
3200 | || prev.st_ctime != w->attr.st_ctime |
3057 | ) { |
3201 | ) { |
|
|
3202 | /* we only update w->prev on actual differences */ |
|
|
3203 | /* in case we test more often than invoke the callback, */ |
|
|
3204 | /* to ensure that prev is always different to attr */ |
|
|
3205 | w->prev = prev; |
|
|
3206 | |
3058 | #if EV_USE_INOTIFY |
3207 | #if EV_USE_INOTIFY |
3059 | if (fs_fd >= 0) |
3208 | if (fs_fd >= 0) |
3060 | { |
3209 | { |
3061 | infy_del (EV_A_ w); |
3210 | infy_del (EV_A_ w); |
3062 | infy_add (EV_A_ w); |
3211 | infy_add (EV_A_ w); |
… | |
… | |
3087 | |
3236 | |
3088 | if (fs_fd >= 0) |
3237 | if (fs_fd >= 0) |
3089 | infy_add (EV_A_ w); |
3238 | infy_add (EV_A_ w); |
3090 | else |
3239 | else |
3091 | #endif |
3240 | #endif |
|
|
3241 | { |
3092 | ev_timer_again (EV_A_ &w->timer); |
3242 | ev_timer_again (EV_A_ &w->timer); |
|
|
3243 | ev_unref (EV_A); |
|
|
3244 | } |
3093 | |
3245 | |
3094 | ev_start (EV_A_ (W)w, 1); |
3246 | ev_start (EV_A_ (W)w, 1); |
3095 | |
3247 | |
3096 | EV_FREQUENT_CHECK; |
3248 | EV_FREQUENT_CHECK; |
3097 | } |
3249 | } |
… | |
… | |
3106 | EV_FREQUENT_CHECK; |
3258 | EV_FREQUENT_CHECK; |
3107 | |
3259 | |
3108 | #if EV_USE_INOTIFY |
3260 | #if EV_USE_INOTIFY |
3109 | infy_del (EV_A_ w); |
3261 | infy_del (EV_A_ w); |
3110 | #endif |
3262 | #endif |
|
|
3263 | |
|
|
3264 | if (ev_is_active (&w->timer)) |
|
|
3265 | { |
|
|
3266 | ev_ref (EV_A); |
3111 | ev_timer_stop (EV_A_ &w->timer); |
3267 | ev_timer_stop (EV_A_ &w->timer); |
|
|
3268 | } |
3112 | |
3269 | |
3113 | ev_stop (EV_A_ (W)w); |
3270 | ev_stop (EV_A_ (W)w); |
3114 | |
3271 | |
3115 | EV_FREQUENT_CHECK; |
3272 | EV_FREQUENT_CHECK; |
3116 | } |
3273 | } |
… | |
… | |
3335 | EV_FREQUENT_CHECK; |
3492 | EV_FREQUENT_CHECK; |
3336 | |
3493 | |
3337 | ev_io_stop (EV_A_ &w->io); |
3494 | ev_io_stop (EV_A_ &w->io); |
3338 | ev_prepare_stop (EV_A_ &w->prepare); |
3495 | ev_prepare_stop (EV_A_ &w->prepare); |
3339 | ev_fork_stop (EV_A_ &w->fork); |
3496 | ev_fork_stop (EV_A_ &w->fork); |
|
|
3497 | |
|
|
3498 | ev_stop (EV_A_ (W)w); |
3340 | |
3499 | |
3341 | EV_FREQUENT_CHECK; |
3500 | EV_FREQUENT_CHECK; |
3342 | } |
3501 | } |
3343 | #endif |
3502 | #endif |
3344 | |
3503 | |