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 |
… | |
… | |
133 | # else |
133 | # else |
134 | # define EV_USE_INOTIFY 0 |
134 | # define EV_USE_INOTIFY 0 |
135 | # endif |
135 | # endif |
136 | # endif |
136 | # endif |
137 | |
137 | |
|
|
138 | # ifndef EV_USE_SIGNALFD |
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|
139 | # if HAVE_SIGNALFD && HAVE_SYS_SIGNALFD_H |
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|
140 | # define EV_USE_SIGNALFD 1 |
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|
141 | # else |
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|
142 | # define EV_USE_SIGNALFD 0 |
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|
143 | # endif |
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|
144 | # endif |
|
|
145 | |
138 | # ifndef EV_USE_EVENTFD |
146 | # ifndef EV_USE_EVENTFD |
139 | # if HAVE_EVENTFD |
147 | # if HAVE_EVENTFD |
140 | # define EV_USE_EVENTFD 1 |
148 | # define EV_USE_EVENTFD 1 |
141 | # else |
149 | # else |
142 | # define EV_USE_EVENTFD 0 |
150 | # define EV_USE_EVENTFD 0 |
… | |
… | |
145 | |
153 | |
146 | #endif |
154 | #endif |
147 | |
155 | |
148 | #include <math.h> |
156 | #include <math.h> |
149 | #include <stdlib.h> |
157 | #include <stdlib.h> |
|
|
158 | #include <string.h> |
150 | #include <fcntl.h> |
159 | #include <fcntl.h> |
151 | #include <stddef.h> |
160 | #include <stddef.h> |
152 | |
161 | |
153 | #include <stdio.h> |
162 | #include <stdio.h> |
154 | |
163 | |
155 | #include <assert.h> |
164 | #include <assert.h> |
156 | #include <errno.h> |
165 | #include <errno.h> |
157 | #include <sys/types.h> |
166 | #include <sys/types.h> |
158 | #include <time.h> |
167 | #include <time.h> |
|
|
168 | #include <limits.h> |
159 | |
169 | |
160 | #include <signal.h> |
170 | #include <signal.h> |
161 | |
171 | |
162 | #ifdef EV_H |
172 | #ifdef EV_H |
163 | # include EV_H |
173 | # include EV_H |
… | |
… | |
178 | # endif |
188 | # endif |
179 | #endif |
189 | #endif |
180 | |
190 | |
181 | /* this block tries to deduce configuration from header-defined symbols and defaults */ |
191 | /* this block tries to deduce configuration from header-defined symbols and defaults */ |
182 | |
192 | |
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|
193 | /* try to deduce the maximum number of signals on this platform */ |
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|
194 | #if defined (EV_NSIG) |
|
|
195 | /* use what's provided */ |
|
|
196 | #elif defined (NSIG) |
|
|
197 | # define EV_NSIG (NSIG) |
|
|
198 | #elif defined(_NSIG) |
|
|
199 | # define EV_NSIG (_NSIG) |
|
|
200 | #elif defined (SIGMAX) |
|
|
201 | # define EV_NSIG (SIGMAX+1) |
|
|
202 | #elif defined (SIG_MAX) |
|
|
203 | # define EV_NSIG (SIG_MAX+1) |
|
|
204 | #elif defined (_SIG_MAX) |
|
|
205 | # define EV_NSIG (_SIG_MAX+1) |
|
|
206 | #elif defined (MAXSIG) |
|
|
207 | # define EV_NSIG (MAXSIG+1) |
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|
208 | #elif defined (MAX_SIG) |
|
|
209 | # define EV_NSIG (MAX_SIG+1) |
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|
210 | #elif defined (SIGARRAYSIZE) |
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|
211 | # define EV_NSIG SIGARRAYSIZE /* Assume ary[SIGARRAYSIZE] */ |
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|
212 | #elif defined (_sys_nsig) |
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|
213 | # define EV_NSIG (_sys_nsig) /* Solaris 2.5 */ |
|
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214 | #else |
|
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215 | # error "unable to find value for NSIG, please report" |
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216 | /* to make it compile regardless, just remove the above line */ |
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217 | # define EV_NSIG 65 |
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|
218 | #endif |
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|
219 | |
183 | #ifndef EV_USE_CLOCK_SYSCALL |
220 | #ifndef EV_USE_CLOCK_SYSCALL |
184 | # if __linux && __GLIBC__ >= 2 |
221 | # if __linux && __GLIBC__ >= 2 |
185 | # define EV_USE_CLOCK_SYSCALL 1 |
222 | # define EV_USE_CLOCK_SYSCALL 1 |
186 | # else |
223 | # else |
187 | # define EV_USE_CLOCK_SYSCALL 0 |
224 | # define EV_USE_CLOCK_SYSCALL 0 |
… | |
… | |
263 | #ifndef EV_USE_EVENTFD |
300 | #ifndef EV_USE_EVENTFD |
264 | # if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 7)) |
301 | # if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 7)) |
265 | # define EV_USE_EVENTFD 1 |
302 | # define EV_USE_EVENTFD 1 |
266 | # else |
303 | # else |
267 | # define EV_USE_EVENTFD 0 |
304 | # define EV_USE_EVENTFD 0 |
|
|
305 | # endif |
|
|
306 | #endif |
|
|
307 | |
|
|
308 | #ifndef EV_USE_SIGNALFD |
|
|
309 | # if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 7)) |
|
|
310 | # define EV_USE_SIGNALFD 1 |
|
|
311 | # else |
|
|
312 | # define EV_USE_SIGNALFD 0 |
268 | # endif |
313 | # endif |
269 | #endif |
314 | #endif |
270 | |
315 | |
271 | #if 0 /* debugging */ |
316 | #if 0 /* debugging */ |
272 | # define EV_VERIFY 3 |
317 | # define EV_VERIFY 3 |
… | |
… | |
300 | # endif |
345 | # endif |
301 | #endif |
346 | #endif |
302 | |
347 | |
303 | /* 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 */ |
304 | |
349 | |
|
|
350 | #ifdef _AIX |
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|
351 | /* AIX has a completely broken poll.h header */ |
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352 | # undef EV_USE_POLL |
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353 | # define EV_USE_POLL 0 |
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|
354 | #endif |
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355 | |
305 | #ifndef CLOCK_MONOTONIC |
356 | #ifndef CLOCK_MONOTONIC |
306 | # undef EV_USE_MONOTONIC |
357 | # undef EV_USE_MONOTONIC |
307 | # define EV_USE_MONOTONIC 0 |
358 | # define EV_USE_MONOTONIC 0 |
308 | #endif |
359 | #endif |
309 | |
360 | |
… | |
… | |
339 | #endif |
390 | #endif |
340 | |
391 | |
341 | #if EV_USE_EVENTFD |
392 | #if EV_USE_EVENTFD |
342 | /* our minimum requirement is glibc 2.7 which has the stub, but not the header */ |
393 | /* our minimum requirement is glibc 2.7 which has the stub, but not the header */ |
343 | # include <stdint.h> |
394 | # include <stdint.h> |
|
|
395 | # ifndef EFD_NONBLOCK |
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|
396 | # define EFD_NONBLOCK O_NONBLOCK |
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|
397 | # endif |
|
|
398 | # ifndef EFD_CLOEXEC |
|
|
399 | # ifdef O_CLOEXEC |
|
|
400 | # define EFD_CLOEXEC O_CLOEXEC |
|
|
401 | # else |
|
|
402 | # define EFD_CLOEXEC 02000000 |
|
|
403 | # endif |
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|
404 | # endif |
344 | # ifdef __cplusplus |
405 | # ifdef __cplusplus |
345 | extern "C" { |
406 | extern "C" { |
346 | # endif |
407 | # endif |
347 | int eventfd (unsigned int initval, int flags); |
408 | int (eventfd) (unsigned int initval, int flags); |
348 | # ifdef __cplusplus |
409 | # ifdef __cplusplus |
349 | } |
410 | } |
350 | # endif |
411 | # endif |
351 | #endif |
412 | #endif |
|
|
413 | |
|
|
414 | #if EV_USE_SIGNALFD |
|
|
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 |
|
|
419 | # endif |
|
|
420 | # ifndef SFD_CLOEXEC |
|
|
421 | # ifdef O_CLOEXEC |
|
|
422 | # define SFD_CLOEXEC O_CLOEXEC |
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|
423 | # else |
|
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424 | # define SFD_CLOEXEC 02000000 |
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|
425 | # endif |
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|
426 | # endif |
|
|
427 | # ifdef __cplusplus |
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|
428 | extern "C" { |
|
|
429 | # endif |
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430 | int signalfd (int fd, const sigset_t *mask, int flags); |
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431 | |
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432 | struct signalfd_siginfo |
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|
433 | { |
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434 | uint32_t ssi_signo; |
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435 | char pad[128 - sizeof (uint32_t)]; |
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|
436 | }; |
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437 | # ifdef __cplusplus |
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|
438 | } |
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|
439 | # endif |
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|
440 | #endif |
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|
441 | |
352 | |
442 | |
353 | /**/ |
443 | /**/ |
354 | |
444 | |
355 | #if EV_VERIFY >= 3 |
445 | #if EV_VERIFY >= 3 |
356 | # define EV_FREQUENT_CHECK ev_loop_verify (EV_A) |
446 | # define EV_FREQUENT_CHECK ev_loop_verify (EV_A) |
… | |
… | |
368 | */ |
458 | */ |
369 | #define TIME_EPSILON 0.0001220703125 /* 1/8192 */ |
459 | #define TIME_EPSILON 0.0001220703125 /* 1/8192 */ |
370 | |
460 | |
371 | #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) */ |
372 | #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) */ |
373 | /*#define CLEANUP_INTERVAL (MAX_BLOCKTIME * 5.) /* how often to try to free memory and re-check fds, TODO */ |
|
|
374 | |
463 | |
375 | #if __GNUC__ >= 4 |
464 | #if __GNUC__ >= 4 |
376 | # define expect(expr,value) __builtin_expect ((expr),(value)) |
465 | # define expect(expr,value) __builtin_expect ((expr),(value)) |
377 | # define noinline __attribute__ ((noinline)) |
466 | # define noinline __attribute__ ((noinline)) |
378 | #else |
467 | #else |
… | |
… | |
419 | |
508 | |
420 | #if EV_USE_MONOTONIC |
509 | #if EV_USE_MONOTONIC |
421 | static EV_ATOMIC_T have_monotonic; /* did clock_gettime (CLOCK_MONOTONIC) work? */ |
510 | static EV_ATOMIC_T have_monotonic; /* did clock_gettime (CLOCK_MONOTONIC) work? */ |
422 | #endif |
511 | #endif |
423 | |
512 | |
|
|
513 | #ifndef EV_FD_TO_WIN32_HANDLE |
|
|
514 | # define EV_FD_TO_WIN32_HANDLE(fd) _get_osfhandle (fd) |
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|
515 | #endif |
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|
516 | #ifndef EV_WIN32_HANDLE_TO_FD |
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|
517 | # define EV_WIN32_HANDLE_TO_FD(handle) _open_osfhandle (handle, 0) |
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|
518 | #endif |
|
|
519 | #ifndef EV_WIN32_CLOSE_FD |
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|
520 | # define EV_WIN32_CLOSE_FD(fd) close (fd) |
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|
521 | #endif |
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|
522 | |
424 | #ifdef _WIN32 |
523 | #ifdef _WIN32 |
425 | # include "ev_win32.c" |
524 | # include "ev_win32.c" |
426 | #endif |
525 | #endif |
427 | |
526 | |
428 | /*****************************************************************************/ |
527 | /*****************************************************************************/ |
… | |
… | |
490 | #define ev_malloc(size) ev_realloc (0, (size)) |
589 | #define ev_malloc(size) ev_realloc (0, (size)) |
491 | #define ev_free(ptr) ev_realloc ((ptr), 0) |
590 | #define ev_free(ptr) ev_realloc ((ptr), 0) |
492 | |
591 | |
493 | /*****************************************************************************/ |
592 | /*****************************************************************************/ |
494 | |
593 | |
|
|
594 | /* set in reify when reification needed */ |
|
|
595 | #define EV_ANFD_REIFY 1 |
|
|
596 | |
495 | /* file descriptor info structure */ |
597 | /* file descriptor info structure */ |
496 | typedef struct |
598 | typedef struct |
497 | { |
599 | { |
498 | WL head; |
600 | WL head; |
499 | unsigned char events; /* the events watched for */ |
601 | unsigned char events; /* the events watched for */ |
500 | unsigned char reify; /* flag set when this ANFD needs reification */ |
602 | unsigned char reify; /* flag set when this ANFD needs reification (EV_ANFD_REIFY, EV__IOFDSET) */ |
501 | unsigned char emask; /* the epoll backend stores the actual kernel mask in here */ |
603 | unsigned char emask; /* the epoll backend stores the actual kernel mask in here */ |
502 | unsigned char unused; |
604 | unsigned char unused; |
503 | #if EV_USE_EPOLL |
605 | #if EV_USE_EPOLL |
504 | unsigned int egen; /* generation counter to counter epoll bugs */ |
606 | unsigned int egen; /* generation counter to counter epoll bugs */ |
505 | #endif |
607 | #endif |
… | |
… | |
567 | |
669 | |
568 | static int ev_default_loop_ptr; |
670 | static int ev_default_loop_ptr; |
569 | |
671 | |
570 | #endif |
672 | #endif |
571 | |
673 | |
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|
674 | #if EV_MINIMAL < 2 |
|
|
675 | # define EV_RELEASE_CB if (expect_false (release_cb)) release_cb (EV_A) |
|
|
676 | # define EV_ACQUIRE_CB if (expect_false (acquire_cb)) acquire_cb (EV_A) |
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|
677 | # define EV_INVOKE_PENDING invoke_cb (EV_A) |
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|
678 | #else |
|
|
679 | # define EV_RELEASE_CB (void)0 |
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|
680 | # define EV_ACQUIRE_CB (void)0 |
|
|
681 | # define EV_INVOKE_PENDING ev_invoke_pending (EV_A) |
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|
682 | #endif |
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683 | |
|
|
684 | #define EVUNLOOP_RECURSE 0x80 |
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|
685 | |
572 | /*****************************************************************************/ |
686 | /*****************************************************************************/ |
573 | |
687 | |
574 | #ifndef EV_HAVE_EV_TIME |
688 | #ifndef EV_HAVE_EV_TIME |
575 | ev_tstamp |
689 | ev_tstamp |
576 | ev_time (void) |
690 | ev_time (void) |
… | |
… | |
632 | |
746 | |
633 | tv.tv_sec = (time_t)delay; |
747 | tv.tv_sec = (time_t)delay; |
634 | tv.tv_usec = (long)((delay - (ev_tstamp)(tv.tv_sec)) * 1e6); |
748 | tv.tv_usec = (long)((delay - (ev_tstamp)(tv.tv_sec)) * 1e6); |
635 | |
749 | |
636 | /* here we rely on sys/time.h + sys/types.h + unistd.h providing select */ |
750 | /* here we rely on sys/time.h + sys/types.h + unistd.h providing select */ |
637 | /* somehting not guaranteed by newer posix versions, but guaranteed */ |
751 | /* something not guaranteed by newer posix versions, but guaranteed */ |
638 | /* by older ones */ |
752 | /* by older ones */ |
639 | select (0, 0, 0, 0, &tv); |
753 | select (0, 0, 0, 0, &tv); |
640 | #endif |
754 | #endif |
641 | } |
755 | } |
642 | } |
756 | } |
… | |
… | |
750 | } |
864 | } |
751 | |
865 | |
752 | /*****************************************************************************/ |
866 | /*****************************************************************************/ |
753 | |
867 | |
754 | inline_speed void |
868 | inline_speed void |
755 | fd_event (EV_P_ int fd, int revents) |
869 | fd_event_nc (EV_P_ int fd, int revents) |
756 | { |
870 | { |
757 | ANFD *anfd = anfds + fd; |
871 | ANFD *anfd = anfds + fd; |
758 | ev_io *w; |
872 | ev_io *w; |
759 | |
873 | |
760 | for (w = (ev_io *)anfd->head; w; w = (ev_io *)((WL)w)->next) |
874 | for (w = (ev_io *)anfd->head; w; w = (ev_io *)((WL)w)->next) |
… | |
… | |
764 | if (ev) |
878 | if (ev) |
765 | ev_feed_event (EV_A_ (W)w, ev); |
879 | ev_feed_event (EV_A_ (W)w, ev); |
766 | } |
880 | } |
767 | } |
881 | } |
768 | |
882 | |
|
|
883 | /* do not submit kernel events for fds that have reify set */ |
|
|
884 | /* because that means they changed while we were polling for new events */ |
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|
885 | inline_speed void |
|
|
886 | fd_event (EV_P_ int fd, int revents) |
|
|
887 | { |
|
|
888 | ANFD *anfd = anfds + fd; |
|
|
889 | |
|
|
890 | if (expect_true (!anfd->reify)) |
|
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891 | fd_event_nc (EV_A_ fd, revents); |
|
|
892 | } |
|
|
893 | |
769 | void |
894 | void |
770 | ev_feed_fd_event (EV_P_ int fd, int revents) |
895 | ev_feed_fd_event (EV_P_ int fd, int revents) |
771 | { |
896 | { |
772 | if (fd >= 0 && fd < anfdmax) |
897 | if (fd >= 0 && fd < anfdmax) |
773 | fd_event (EV_A_ fd, revents); |
898 | fd_event_nc (EV_A_ fd, revents); |
774 | } |
899 | } |
775 | |
900 | |
776 | /* make sure the external fd watch events are in-sync */ |
901 | /* make sure the external fd watch events are in-sync */ |
777 | /* with the kernel/libev internal state */ |
902 | /* with the kernel/libev internal state */ |
778 | inline_size void |
903 | inline_size void |
… | |
… | |
793 | |
918 | |
794 | #if EV_SELECT_IS_WINSOCKET |
919 | #if EV_SELECT_IS_WINSOCKET |
795 | if (events) |
920 | if (events) |
796 | { |
921 | { |
797 | unsigned long arg; |
922 | unsigned long arg; |
798 | #ifdef EV_FD_TO_WIN32_HANDLE |
|
|
799 | anfd->handle = EV_FD_TO_WIN32_HANDLE (fd); |
923 | anfd->handle = EV_FD_TO_WIN32_HANDLE (fd); |
800 | #else |
|
|
801 | anfd->handle = _get_osfhandle (fd); |
|
|
802 | #endif |
|
|
803 | assert (("libev: only socket fds supported in this configuration", ioctlsocket (anfd->handle, FIONREAD, &arg) == 0)); |
924 | assert (("libev: only socket fds supported in this configuration", ioctlsocket (anfd->handle, FIONREAD, &arg) == 0)); |
804 | } |
925 | } |
805 | #endif |
926 | #endif |
806 | |
927 | |
807 | { |
928 | { |
… | |
… | |
850 | /* check whether the given fd is atcually valid, for error recovery */ |
971 | /* check whether the given fd is atcually valid, for error recovery */ |
851 | inline_size int |
972 | inline_size int |
852 | fd_valid (int fd) |
973 | fd_valid (int fd) |
853 | { |
974 | { |
854 | #ifdef _WIN32 |
975 | #ifdef _WIN32 |
855 | return _get_osfhandle (fd) != -1; |
976 | return EV_FD_TO_WIN32_HANDLE (fd) != -1; |
856 | #else |
977 | #else |
857 | return fcntl (fd, F_GETFD) != -1; |
978 | return fcntl (fd, F_GETFD) != -1; |
858 | #endif |
979 | #endif |
859 | } |
980 | } |
860 | |
981 | |
… | |
… | |
878 | |
999 | |
879 | for (fd = anfdmax; fd--; ) |
1000 | for (fd = anfdmax; fd--; ) |
880 | if (anfds [fd].events) |
1001 | if (anfds [fd].events) |
881 | { |
1002 | { |
882 | fd_kill (EV_A_ fd); |
1003 | fd_kill (EV_A_ fd); |
883 | return; |
1004 | break; |
884 | } |
1005 | } |
885 | } |
1006 | } |
886 | |
1007 | |
887 | /* usually called after fork if backend needs to re-arm all fds from scratch */ |
1008 | /* usually called after fork if backend needs to re-arm all fds from scratch */ |
888 | static void noinline |
1009 | static void noinline |
… | |
… | |
893 | for (fd = 0; fd < anfdmax; ++fd) |
1014 | for (fd = 0; fd < anfdmax; ++fd) |
894 | if (anfds [fd].events) |
1015 | if (anfds [fd].events) |
895 | { |
1016 | { |
896 | anfds [fd].events = 0; |
1017 | anfds [fd].events = 0; |
897 | anfds [fd].emask = 0; |
1018 | anfds [fd].emask = 0; |
898 | fd_change (EV_A_ fd, EV__IOFDSET | 1); |
1019 | fd_change (EV_A_ fd, EV__IOFDSET | EV_ANFD_REIFY); |
899 | } |
1020 | } |
900 | } |
1021 | } |
901 | |
1022 | |
902 | /*****************************************************************************/ |
1023 | /*****************************************************************************/ |
903 | |
1024 | |
… | |
… | |
978 | |
1099 | |
979 | for (;;) |
1100 | for (;;) |
980 | { |
1101 | { |
981 | int c = k << 1; |
1102 | int c = k << 1; |
982 | |
1103 | |
983 | if (c > N + HEAP0 - 1) |
1104 | if (c >= N + HEAP0) |
984 | break; |
1105 | break; |
985 | |
1106 | |
986 | c += c + 1 < N + HEAP0 && ANHE_at (heap [c]) > ANHE_at (heap [c + 1]) |
1107 | c += c + 1 < N + HEAP0 && ANHE_at (heap [c]) > ANHE_at (heap [c + 1]) |
987 | ? 1 : 0; |
1108 | ? 1 : 0; |
988 | |
1109 | |
… | |
… | |
1024 | |
1145 | |
1025 | /* move an element suitably so it is in a correct place */ |
1146 | /* move an element suitably so it is in a correct place */ |
1026 | inline_size void |
1147 | inline_size void |
1027 | adjustheap (ANHE *heap, int N, int k) |
1148 | adjustheap (ANHE *heap, int N, int k) |
1028 | { |
1149 | { |
1029 | if (k > HEAP0 && ANHE_at (heap [HPARENT (k)]) >= ANHE_at (heap [k])) |
1150 | if (k > HEAP0 && ANHE_at (heap [k]) <= ANHE_at (heap [HPARENT (k)])) |
1030 | upheap (heap, k); |
1151 | upheap (heap, k); |
1031 | else |
1152 | else |
1032 | downheap (heap, N, k); |
1153 | downheap (heap, N, k); |
1033 | } |
1154 | } |
1034 | |
1155 | |
… | |
… | |
1047 | /*****************************************************************************/ |
1168 | /*****************************************************************************/ |
1048 | |
1169 | |
1049 | /* associate signal watchers to a signal signal */ |
1170 | /* associate signal watchers to a signal signal */ |
1050 | typedef struct |
1171 | typedef struct |
1051 | { |
1172 | { |
|
|
1173 | EV_ATOMIC_T pending; |
|
|
1174 | #if EV_MULTIPLICITY |
|
|
1175 | EV_P; |
|
|
1176 | #endif |
1052 | WL head; |
1177 | WL head; |
1053 | EV_ATOMIC_T gotsig; |
|
|
1054 | } ANSIG; |
1178 | } ANSIG; |
1055 | |
1179 | |
1056 | static ANSIG *signals; |
1180 | static ANSIG signals [EV_NSIG - 1]; |
1057 | static int signalmax; |
|
|
1058 | |
|
|
1059 | static EV_ATOMIC_T gotsig; |
|
|
1060 | |
1181 | |
1061 | /*****************************************************************************/ |
1182 | /*****************************************************************************/ |
1062 | |
1183 | |
1063 | /* used to prepare libev internal fd's */ |
1184 | /* used to prepare libev internal fd's */ |
1064 | /* this is not fork-safe */ |
1185 | /* this is not fork-safe */ |
1065 | inline_speed void |
1186 | inline_speed void |
1066 | fd_intern (int fd) |
1187 | fd_intern (int fd) |
1067 | { |
1188 | { |
1068 | #ifdef _WIN32 |
1189 | #ifdef _WIN32 |
1069 | unsigned long arg = 1; |
1190 | unsigned long arg = 1; |
1070 | ioctlsocket (_get_osfhandle (fd), FIONBIO, &arg); |
1191 | ioctlsocket (EV_FD_TO_WIN32_HANDLE (fd), FIONBIO, &arg); |
1071 | #else |
1192 | #else |
1072 | fcntl (fd, F_SETFD, FD_CLOEXEC); |
1193 | fcntl (fd, F_SETFD, FD_CLOEXEC); |
1073 | fcntl (fd, F_SETFL, O_NONBLOCK); |
1194 | fcntl (fd, F_SETFL, O_NONBLOCK); |
1074 | #endif |
1195 | #endif |
1075 | } |
1196 | } |
… | |
… | |
1078 | evpipe_init (EV_P) |
1199 | evpipe_init (EV_P) |
1079 | { |
1200 | { |
1080 | if (!ev_is_active (&pipe_w)) |
1201 | if (!ev_is_active (&pipe_w)) |
1081 | { |
1202 | { |
1082 | #if EV_USE_EVENTFD |
1203 | #if EV_USE_EVENTFD |
|
|
1204 | evfd = eventfd (0, EFD_NONBLOCK | EFD_CLOEXEC); |
|
|
1205 | if (evfd < 0 && errno == EINVAL) |
1083 | if ((evfd = eventfd (0, 0)) >= 0) |
1206 | evfd = eventfd (0, 0); |
|
|
1207 | |
|
|
1208 | if (evfd >= 0) |
1084 | { |
1209 | { |
1085 | evpipe [0] = -1; |
1210 | evpipe [0] = -1; |
1086 | fd_intern (evfd); |
1211 | fd_intern (evfd); /* doing it twice doesn't hurt */ |
1087 | ev_io_set (&pipe_w, evfd, EV_READ); |
1212 | ev_io_set (&pipe_w, evfd, EV_READ); |
1088 | } |
1213 | } |
1089 | else |
1214 | else |
1090 | #endif |
1215 | #endif |
1091 | { |
1216 | { |
… | |
… | |
1128 | /* called whenever the libev signal pipe */ |
1253 | /* called whenever the libev signal pipe */ |
1129 | /* got some events (signal, async) */ |
1254 | /* got some events (signal, async) */ |
1130 | static void |
1255 | static void |
1131 | pipecb (EV_P_ ev_io *iow, int revents) |
1256 | pipecb (EV_P_ ev_io *iow, int revents) |
1132 | { |
1257 | { |
|
|
1258 | int i; |
|
|
1259 | |
1133 | #if EV_USE_EVENTFD |
1260 | #if EV_USE_EVENTFD |
1134 | if (evfd >= 0) |
1261 | if (evfd >= 0) |
1135 | { |
1262 | { |
1136 | uint64_t counter; |
1263 | uint64_t counter; |
1137 | read (evfd, &counter, sizeof (uint64_t)); |
1264 | read (evfd, &counter, sizeof (uint64_t)); |
… | |
… | |
1141 | { |
1268 | { |
1142 | char dummy; |
1269 | char dummy; |
1143 | read (evpipe [0], &dummy, 1); |
1270 | read (evpipe [0], &dummy, 1); |
1144 | } |
1271 | } |
1145 | |
1272 | |
1146 | if (gotsig && ev_is_default_loop (EV_A)) |
1273 | if (sig_pending) |
1147 | { |
1274 | { |
1148 | int signum; |
1275 | sig_pending = 0; |
1149 | gotsig = 0; |
|
|
1150 | |
1276 | |
1151 | for (signum = signalmax; signum--; ) |
1277 | for (i = EV_NSIG - 1; i--; ) |
1152 | if (signals [signum].gotsig) |
1278 | if (expect_false (signals [i].pending)) |
1153 | ev_feed_signal_event (EV_A_ signum + 1); |
1279 | ev_feed_signal_event (EV_A_ i + 1); |
1154 | } |
1280 | } |
1155 | |
1281 | |
1156 | #if EV_ASYNC_ENABLE |
1282 | #if EV_ASYNC_ENABLE |
1157 | if (gotasync) |
1283 | if (async_pending) |
1158 | { |
1284 | { |
1159 | int i; |
1285 | async_pending = 0; |
1160 | gotasync = 0; |
|
|
1161 | |
1286 | |
1162 | for (i = asynccnt; i--; ) |
1287 | for (i = asynccnt; i--; ) |
1163 | if (asyncs [i]->sent) |
1288 | if (asyncs [i]->sent) |
1164 | { |
1289 | { |
1165 | asyncs [i]->sent = 0; |
1290 | asyncs [i]->sent = 0; |
… | |
… | |
1173 | |
1298 | |
1174 | static void |
1299 | static void |
1175 | ev_sighandler (int signum) |
1300 | ev_sighandler (int signum) |
1176 | { |
1301 | { |
1177 | #if EV_MULTIPLICITY |
1302 | #if EV_MULTIPLICITY |
1178 | struct ev_loop *loop = &default_loop_struct; |
1303 | EV_P = signals [signum - 1].loop; |
1179 | #endif |
1304 | #endif |
1180 | |
1305 | |
1181 | #if _WIN32 |
1306 | #ifdef _WIN32 |
1182 | signal (signum, ev_sighandler); |
1307 | signal (signum, ev_sighandler); |
1183 | #endif |
1308 | #endif |
1184 | |
1309 | |
1185 | signals [signum - 1].gotsig = 1; |
1310 | signals [signum - 1].pending = 1; |
1186 | evpipe_write (EV_A_ &gotsig); |
1311 | evpipe_write (EV_A_ &sig_pending); |
1187 | } |
1312 | } |
1188 | |
1313 | |
1189 | void noinline |
1314 | void noinline |
1190 | ev_feed_signal_event (EV_P_ int signum) |
1315 | ev_feed_signal_event (EV_P_ int signum) |
1191 | { |
1316 | { |
1192 | WL w; |
1317 | WL w; |
1193 | |
1318 | |
|
|
1319 | if (expect_false (signum <= 0 || signum > EV_NSIG)) |
|
|
1320 | return; |
|
|
1321 | |
|
|
1322 | --signum; |
|
|
1323 | |
1194 | #if EV_MULTIPLICITY |
1324 | #if EV_MULTIPLICITY |
1195 | assert (("libev: feeding signal events is only supported in the default loop", loop == ev_default_loop_ptr)); |
1325 | /* it is permissible to try to feed a signal to the wrong loop */ |
1196 | #endif |
1326 | /* or, likely more useful, feeding a signal nobody is waiting for */ |
1197 | |
1327 | |
1198 | --signum; |
1328 | if (expect_false (signals [signum].loop != EV_A)) |
1199 | |
|
|
1200 | if (signum < 0 || signum >= signalmax) |
|
|
1201 | return; |
1329 | return; |
|
|
1330 | #endif |
1202 | |
1331 | |
1203 | signals [signum].gotsig = 0; |
1332 | signals [signum].pending = 0; |
1204 | |
1333 | |
1205 | for (w = signals [signum].head; w; w = w->next) |
1334 | for (w = signals [signum].head; w; w = w->next) |
1206 | ev_feed_event (EV_A_ (W)w, EV_SIGNAL); |
1335 | ev_feed_event (EV_A_ (W)w, EV_SIGNAL); |
1207 | } |
1336 | } |
|
|
1337 | |
|
|
1338 | #if EV_USE_SIGNALFD |
|
|
1339 | static void |
|
|
1340 | sigfdcb (EV_P_ ev_io *iow, int revents) |
|
|
1341 | { |
|
|
1342 | struct signalfd_siginfo si[2], *sip; /* these structs are big */ |
|
|
1343 | |
|
|
1344 | for (;;) |
|
|
1345 | { |
|
|
1346 | ssize_t res = read (sigfd, si, sizeof (si)); |
|
|
1347 | |
|
|
1348 | /* not ISO-C, as res might be -1, but works with SuS */ |
|
|
1349 | for (sip = si; (char *)sip < (char *)si + res; ++sip) |
|
|
1350 | ev_feed_signal_event (EV_A_ sip->ssi_signo); |
|
|
1351 | |
|
|
1352 | if (res < (ssize_t)sizeof (si)) |
|
|
1353 | break; |
|
|
1354 | } |
|
|
1355 | } |
|
|
1356 | #endif |
1208 | |
1357 | |
1209 | /*****************************************************************************/ |
1358 | /*****************************************************************************/ |
1210 | |
1359 | |
1211 | static WL childs [EV_PID_HASHSIZE]; |
1360 | static WL childs [EV_PID_HASHSIZE]; |
1212 | |
1361 | |
… | |
… | |
1357 | ev_backend (EV_P) |
1506 | ev_backend (EV_P) |
1358 | { |
1507 | { |
1359 | return backend; |
1508 | return backend; |
1360 | } |
1509 | } |
1361 | |
1510 | |
|
|
1511 | #if EV_MINIMAL < 2 |
1362 | unsigned int |
1512 | unsigned int |
1363 | ev_loop_count (EV_P) |
1513 | ev_loop_count (EV_P) |
1364 | { |
1514 | { |
1365 | return loop_count; |
1515 | return loop_count; |
1366 | } |
1516 | } |
… | |
… | |
1380 | void |
1530 | void |
1381 | ev_set_timeout_collect_interval (EV_P_ ev_tstamp interval) |
1531 | ev_set_timeout_collect_interval (EV_P_ ev_tstamp interval) |
1382 | { |
1532 | { |
1383 | timeout_blocktime = interval; |
1533 | timeout_blocktime = interval; |
1384 | } |
1534 | } |
|
|
1535 | |
|
|
1536 | void |
|
|
1537 | ev_set_userdata (EV_P_ void *data) |
|
|
1538 | { |
|
|
1539 | userdata = data; |
|
|
1540 | } |
|
|
1541 | |
|
|
1542 | void * |
|
|
1543 | ev_userdata (EV_P) |
|
|
1544 | { |
|
|
1545 | return userdata; |
|
|
1546 | } |
|
|
1547 | |
|
|
1548 | void ev_set_invoke_pending_cb (EV_P_ void (*invoke_pending_cb)(EV_P)) |
|
|
1549 | { |
|
|
1550 | invoke_cb = invoke_pending_cb; |
|
|
1551 | } |
|
|
1552 | |
|
|
1553 | void ev_set_loop_release_cb (EV_P_ void (*release)(EV_P), void (*acquire)(EV_P)) |
|
|
1554 | { |
|
|
1555 | release_cb = release; |
|
|
1556 | acquire_cb = acquire; |
|
|
1557 | } |
|
|
1558 | #endif |
1385 | |
1559 | |
1386 | /* initialise a loop structure, must be zero-initialised */ |
1560 | /* initialise a loop structure, must be zero-initialised */ |
1387 | static void noinline |
1561 | static void noinline |
1388 | loop_init (EV_P_ unsigned int flags) |
1562 | loop_init (EV_P_ unsigned int flags) |
1389 | { |
1563 | { |
… | |
… | |
1407 | if (!clock_gettime (CLOCK_MONOTONIC, &ts)) |
1581 | if (!clock_gettime (CLOCK_MONOTONIC, &ts)) |
1408 | have_monotonic = 1; |
1582 | have_monotonic = 1; |
1409 | } |
1583 | } |
1410 | #endif |
1584 | #endif |
1411 | |
1585 | |
|
|
1586 | /* pid check not overridable via env */ |
|
|
1587 | #ifndef _WIN32 |
|
|
1588 | if (flags & EVFLAG_FORKCHECK) |
|
|
1589 | curpid = getpid (); |
|
|
1590 | #endif |
|
|
1591 | |
|
|
1592 | if (!(flags & EVFLAG_NOENV) |
|
|
1593 | && !enable_secure () |
|
|
1594 | && getenv ("LIBEV_FLAGS")) |
|
|
1595 | flags = atoi (getenv ("LIBEV_FLAGS")); |
|
|
1596 | |
1412 | ev_rt_now = ev_time (); |
1597 | ev_rt_now = ev_time (); |
1413 | mn_now = get_clock (); |
1598 | mn_now = get_clock (); |
1414 | now_floor = mn_now; |
1599 | now_floor = mn_now; |
1415 | rtmn_diff = ev_rt_now - mn_now; |
1600 | rtmn_diff = ev_rt_now - mn_now; |
|
|
1601 | #if EV_MINIMAL < 2 |
|
|
1602 | invoke_cb = ev_invoke_pending; |
|
|
1603 | #endif |
1416 | |
1604 | |
1417 | io_blocktime = 0.; |
1605 | io_blocktime = 0.; |
1418 | timeout_blocktime = 0.; |
1606 | timeout_blocktime = 0.; |
1419 | backend = 0; |
1607 | backend = 0; |
1420 | backend_fd = -1; |
1608 | backend_fd = -1; |
1421 | gotasync = 0; |
1609 | sig_pending = 0; |
|
|
1610 | #if EV_ASYNC_ENABLE |
|
|
1611 | async_pending = 0; |
|
|
1612 | #endif |
1422 | #if EV_USE_INOTIFY |
1613 | #if EV_USE_INOTIFY |
1423 | fs_fd = -2; |
1614 | fs_fd = flags & EVFLAG_NOINOTIFY ? -1 : -2; |
1424 | #endif |
1615 | #endif |
1425 | |
1616 | #if EV_USE_SIGNALFD |
1426 | /* pid check not overridable via env */ |
1617 | sigfd = flags & EVFLAG_SIGNALFD ? -2 : -1; |
1427 | #ifndef _WIN32 |
|
|
1428 | if (flags & EVFLAG_FORKCHECK) |
|
|
1429 | curpid = getpid (); |
|
|
1430 | #endif |
1618 | #endif |
1431 | |
|
|
1432 | if (!(flags & EVFLAG_NOENV) |
|
|
1433 | && !enable_secure () |
|
|
1434 | && getenv ("LIBEV_FLAGS")) |
|
|
1435 | flags = atoi (getenv ("LIBEV_FLAGS")); |
|
|
1436 | |
1619 | |
1437 | if (!(flags & 0x0000ffffU)) |
1620 | if (!(flags & 0x0000ffffU)) |
1438 | flags |= ev_recommended_backends (); |
1621 | flags |= ev_recommended_backends (); |
1439 | |
1622 | |
1440 | #if EV_USE_PORT |
1623 | #if EV_USE_PORT |
… | |
… | |
1466 | { |
1649 | { |
1467 | int i; |
1650 | int i; |
1468 | |
1651 | |
1469 | if (ev_is_active (&pipe_w)) |
1652 | if (ev_is_active (&pipe_w)) |
1470 | { |
1653 | { |
1471 | ev_ref (EV_A); /* signal watcher */ |
1654 | /*ev_ref (EV_A);*/ |
1472 | ev_io_stop (EV_A_ &pipe_w); |
1655 | /*ev_io_stop (EV_A_ &pipe_w);*/ |
1473 | |
1656 | |
1474 | #if EV_USE_EVENTFD |
1657 | #if EV_USE_EVENTFD |
1475 | if (evfd >= 0) |
1658 | if (evfd >= 0) |
1476 | close (evfd); |
1659 | close (evfd); |
1477 | #endif |
1660 | #endif |
1478 | |
1661 | |
1479 | if (evpipe [0] >= 0) |
1662 | if (evpipe [0] >= 0) |
1480 | { |
1663 | { |
1481 | close (evpipe [0]); |
1664 | EV_WIN32_CLOSE_FD (evpipe [0]); |
1482 | close (evpipe [1]); |
1665 | EV_WIN32_CLOSE_FD (evpipe [1]); |
1483 | } |
1666 | } |
1484 | } |
1667 | } |
|
|
1668 | |
|
|
1669 | #if EV_USE_SIGNALFD |
|
|
1670 | if (ev_is_active (&sigfd_w)) |
|
|
1671 | close (sigfd); |
|
|
1672 | #endif |
1485 | |
1673 | |
1486 | #if EV_USE_INOTIFY |
1674 | #if EV_USE_INOTIFY |
1487 | if (fs_fd >= 0) |
1675 | if (fs_fd >= 0) |
1488 | close (fs_fd); |
1676 | close (fs_fd); |
1489 | #endif |
1677 | #endif |
… | |
… | |
1513 | #if EV_IDLE_ENABLE |
1701 | #if EV_IDLE_ENABLE |
1514 | array_free (idle, [i]); |
1702 | array_free (idle, [i]); |
1515 | #endif |
1703 | #endif |
1516 | } |
1704 | } |
1517 | |
1705 | |
1518 | ev_free (anfds); anfdmax = 0; |
1706 | ev_free (anfds); anfds = 0; anfdmax = 0; |
1519 | |
1707 | |
1520 | /* have to use the microsoft-never-gets-it-right macro */ |
1708 | /* have to use the microsoft-never-gets-it-right macro */ |
1521 | array_free (rfeed, EMPTY); |
1709 | array_free (rfeed, EMPTY); |
1522 | array_free (fdchange, EMPTY); |
1710 | array_free (fdchange, EMPTY); |
1523 | array_free (timer, EMPTY); |
1711 | array_free (timer, EMPTY); |
… | |
… | |
1558 | |
1746 | |
1559 | if (ev_is_active (&pipe_w)) |
1747 | if (ev_is_active (&pipe_w)) |
1560 | { |
1748 | { |
1561 | /* this "locks" the handlers against writing to the pipe */ |
1749 | /* this "locks" the handlers against writing to the pipe */ |
1562 | /* while we modify the fd vars */ |
1750 | /* while we modify the fd vars */ |
1563 | gotsig = 1; |
1751 | sig_pending = 1; |
1564 | #if EV_ASYNC_ENABLE |
1752 | #if EV_ASYNC_ENABLE |
1565 | gotasync = 1; |
1753 | async_pending = 1; |
1566 | #endif |
1754 | #endif |
1567 | |
1755 | |
1568 | ev_ref (EV_A); |
1756 | ev_ref (EV_A); |
1569 | ev_io_stop (EV_A_ &pipe_w); |
1757 | ev_io_stop (EV_A_ &pipe_w); |
1570 | |
1758 | |
… | |
… | |
1573 | close (evfd); |
1761 | close (evfd); |
1574 | #endif |
1762 | #endif |
1575 | |
1763 | |
1576 | if (evpipe [0] >= 0) |
1764 | if (evpipe [0] >= 0) |
1577 | { |
1765 | { |
1578 | close (evpipe [0]); |
1766 | EV_WIN32_CLOSE_FD (evpipe [0]); |
1579 | close (evpipe [1]); |
1767 | EV_WIN32_CLOSE_FD (evpipe [1]); |
1580 | } |
1768 | } |
1581 | |
1769 | |
1582 | evpipe_init (EV_A); |
1770 | evpipe_init (EV_A); |
1583 | /* now iterate over everything, in case we missed something */ |
1771 | /* now iterate over everything, in case we missed something */ |
1584 | pipecb (EV_A_ &pipe_w, EV_READ); |
1772 | pipecb (EV_A_ &pipe_w, EV_READ); |
… | |
… | |
1590 | #if EV_MULTIPLICITY |
1778 | #if EV_MULTIPLICITY |
1591 | |
1779 | |
1592 | struct ev_loop * |
1780 | struct ev_loop * |
1593 | ev_loop_new (unsigned int flags) |
1781 | ev_loop_new (unsigned int flags) |
1594 | { |
1782 | { |
1595 | struct ev_loop *loop = (struct ev_loop *)ev_malloc (sizeof (struct ev_loop)); |
1783 | EV_P = (struct ev_loop *)ev_malloc (sizeof (struct ev_loop)); |
1596 | |
1784 | |
1597 | memset (loop, 0, sizeof (struct ev_loop)); |
1785 | memset (EV_A, 0, sizeof (struct ev_loop)); |
1598 | |
|
|
1599 | loop_init (EV_A_ flags); |
1786 | loop_init (EV_A_ flags); |
1600 | |
1787 | |
1601 | if (ev_backend (EV_A)) |
1788 | if (ev_backend (EV_A)) |
1602 | return loop; |
1789 | return EV_A; |
1603 | |
1790 | |
1604 | return 0; |
1791 | return 0; |
1605 | } |
1792 | } |
1606 | |
1793 | |
1607 | void |
1794 | void |
… | |
… | |
1614 | void |
1801 | void |
1615 | ev_loop_fork (EV_P) |
1802 | ev_loop_fork (EV_P) |
1616 | { |
1803 | { |
1617 | postfork = 1; /* must be in line with ev_default_fork */ |
1804 | postfork = 1; /* must be in line with ev_default_fork */ |
1618 | } |
1805 | } |
|
|
1806 | #endif /* multiplicity */ |
1619 | |
1807 | |
1620 | #if EV_VERIFY |
1808 | #if EV_VERIFY |
1621 | static void noinline |
1809 | static void noinline |
1622 | verify_watcher (EV_P_ W w) |
1810 | verify_watcher (EV_P_ W w) |
1623 | { |
1811 | { |
… | |
… | |
1651 | verify_watcher (EV_A_ ws [cnt]); |
1839 | verify_watcher (EV_A_ ws [cnt]); |
1652 | } |
1840 | } |
1653 | } |
1841 | } |
1654 | #endif |
1842 | #endif |
1655 | |
1843 | |
|
|
1844 | #if EV_MINIMAL < 2 |
1656 | void |
1845 | void |
1657 | ev_loop_verify (EV_P) |
1846 | ev_loop_verify (EV_P) |
1658 | { |
1847 | { |
1659 | #if EV_VERIFY |
1848 | #if EV_VERIFY |
1660 | int i; |
1849 | int i; |
… | |
… | |
1709 | assert (checkmax >= checkcnt); |
1898 | assert (checkmax >= checkcnt); |
1710 | array_verify (EV_A_ (W *)checks, checkcnt); |
1899 | array_verify (EV_A_ (W *)checks, checkcnt); |
1711 | |
1900 | |
1712 | # if 0 |
1901 | # if 0 |
1713 | for (w = (ev_child *)childs [chain & (EV_PID_HASHSIZE - 1)]; w; w = (ev_child *)((WL)w)->next) |
1902 | for (w = (ev_child *)childs [chain & (EV_PID_HASHSIZE - 1)]; w; w = (ev_child *)((WL)w)->next) |
1714 | for (signum = signalmax; signum--; ) if (signals [signum].gotsig) |
1903 | for (signum = EV_NSIG; signum--; ) if (signals [signum].pending) |
1715 | # endif |
|
|
1716 | #endif |
1904 | # endif |
|
|
1905 | #endif |
1717 | } |
1906 | } |
1718 | |
1907 | #endif |
1719 | #endif /* multiplicity */ |
|
|
1720 | |
1908 | |
1721 | #if EV_MULTIPLICITY |
1909 | #if EV_MULTIPLICITY |
1722 | struct ev_loop * |
1910 | struct ev_loop * |
1723 | ev_default_loop_init (unsigned int flags) |
1911 | ev_default_loop_init (unsigned int flags) |
1724 | #else |
1912 | #else |
… | |
… | |
1727 | #endif |
1915 | #endif |
1728 | { |
1916 | { |
1729 | if (!ev_default_loop_ptr) |
1917 | if (!ev_default_loop_ptr) |
1730 | { |
1918 | { |
1731 | #if EV_MULTIPLICITY |
1919 | #if EV_MULTIPLICITY |
1732 | struct ev_loop *loop = ev_default_loop_ptr = &default_loop_struct; |
1920 | EV_P = ev_default_loop_ptr = &default_loop_struct; |
1733 | #else |
1921 | #else |
1734 | ev_default_loop_ptr = 1; |
1922 | ev_default_loop_ptr = 1; |
1735 | #endif |
1923 | #endif |
1736 | |
1924 | |
1737 | loop_init (EV_A_ flags); |
1925 | loop_init (EV_A_ flags); |
… | |
… | |
1754 | |
1942 | |
1755 | void |
1943 | void |
1756 | ev_default_destroy (void) |
1944 | ev_default_destroy (void) |
1757 | { |
1945 | { |
1758 | #if EV_MULTIPLICITY |
1946 | #if EV_MULTIPLICITY |
1759 | struct ev_loop *loop = ev_default_loop_ptr; |
1947 | EV_P = ev_default_loop_ptr; |
1760 | #endif |
1948 | #endif |
1761 | |
1949 | |
1762 | ev_default_loop_ptr = 0; |
1950 | ev_default_loop_ptr = 0; |
1763 | |
1951 | |
1764 | #ifndef _WIN32 |
1952 | #ifndef _WIN32 |
… | |
… | |
1771 | |
1959 | |
1772 | void |
1960 | void |
1773 | ev_default_fork (void) |
1961 | ev_default_fork (void) |
1774 | { |
1962 | { |
1775 | #if EV_MULTIPLICITY |
1963 | #if EV_MULTIPLICITY |
1776 | struct ev_loop *loop = ev_default_loop_ptr; |
1964 | EV_P = ev_default_loop_ptr; |
1777 | #endif |
1965 | #endif |
1778 | |
1966 | |
1779 | postfork = 1; /* must be in line with ev_loop_fork */ |
1967 | postfork = 1; /* must be in line with ev_loop_fork */ |
1780 | } |
1968 | } |
1781 | |
1969 | |
… | |
… | |
1785 | ev_invoke (EV_P_ void *w, int revents) |
1973 | ev_invoke (EV_P_ void *w, int revents) |
1786 | { |
1974 | { |
1787 | EV_CB_INVOKE ((W)w, revents); |
1975 | EV_CB_INVOKE ((W)w, revents); |
1788 | } |
1976 | } |
1789 | |
1977 | |
1790 | inline_speed void |
1978 | unsigned int |
1791 | call_pending (EV_P) |
1979 | ev_pending_count (EV_P) |
|
|
1980 | { |
|
|
1981 | int pri; |
|
|
1982 | unsigned int count = 0; |
|
|
1983 | |
|
|
1984 | for (pri = NUMPRI; pri--; ) |
|
|
1985 | count += pendingcnt [pri]; |
|
|
1986 | |
|
|
1987 | return count; |
|
|
1988 | } |
|
|
1989 | |
|
|
1990 | void noinline |
|
|
1991 | ev_invoke_pending (EV_P) |
1792 | { |
1992 | { |
1793 | int pri; |
1993 | int pri; |
1794 | |
1994 | |
1795 | for (pri = NUMPRI; pri--; ) |
1995 | for (pri = NUMPRI; pri--; ) |
1796 | while (pendingcnt [pri]) |
1996 | while (pendingcnt [pri]) |
… | |
… | |
1964 | ANHE_at_cache (*he); |
2164 | ANHE_at_cache (*he); |
1965 | } |
2165 | } |
1966 | } |
2166 | } |
1967 | |
2167 | |
1968 | /* fetch new monotonic and realtime times from the kernel */ |
2168 | /* fetch new monotonic and realtime times from the kernel */ |
1969 | /* also detetc if there was a timejump, and act accordingly */ |
2169 | /* also detect if there was a timejump, and act accordingly */ |
1970 | inline_speed void |
2170 | inline_speed void |
1971 | time_update (EV_P_ ev_tstamp max_block) |
2171 | time_update (EV_P_ ev_tstamp max_block) |
1972 | { |
2172 | { |
1973 | #if EV_USE_MONOTONIC |
2173 | #if EV_USE_MONOTONIC |
1974 | if (expect_true (have_monotonic)) |
2174 | if (expect_true (have_monotonic)) |
… | |
… | |
2034 | } |
2234 | } |
2035 | |
2235 | |
2036 | void |
2236 | void |
2037 | ev_loop (EV_P_ int flags) |
2237 | ev_loop (EV_P_ int flags) |
2038 | { |
2238 | { |
|
|
2239 | #if EV_MINIMAL < 2 |
2039 | ++loop_depth; |
2240 | ++loop_depth; |
|
|
2241 | #endif |
|
|
2242 | |
|
|
2243 | assert (("libev: ev_loop recursion during release detected", loop_done != EVUNLOOP_RECURSE)); |
2040 | |
2244 | |
2041 | loop_done = EVUNLOOP_CANCEL; |
2245 | loop_done = EVUNLOOP_CANCEL; |
2042 | |
2246 | |
2043 | call_pending (EV_A); /* in case we recurse, ensure ordering stays nice and clean */ |
2247 | EV_INVOKE_PENDING; /* in case we recurse, ensure ordering stays nice and clean */ |
2044 | |
2248 | |
2045 | do |
2249 | do |
2046 | { |
2250 | { |
2047 | #if EV_VERIFY >= 2 |
2251 | #if EV_VERIFY >= 2 |
2048 | ev_loop_verify (EV_A); |
2252 | ev_loop_verify (EV_A); |
… | |
… | |
2061 | /* we might have forked, so queue fork handlers */ |
2265 | /* we might have forked, so queue fork handlers */ |
2062 | if (expect_false (postfork)) |
2266 | if (expect_false (postfork)) |
2063 | if (forkcnt) |
2267 | if (forkcnt) |
2064 | { |
2268 | { |
2065 | queue_events (EV_A_ (W *)forks, forkcnt, EV_FORK); |
2269 | queue_events (EV_A_ (W *)forks, forkcnt, EV_FORK); |
2066 | call_pending (EV_A); |
2270 | EV_INVOKE_PENDING; |
2067 | } |
2271 | } |
2068 | #endif |
2272 | #endif |
2069 | |
2273 | |
2070 | /* queue prepare watchers (and execute them) */ |
2274 | /* queue prepare watchers (and execute them) */ |
2071 | if (expect_false (preparecnt)) |
2275 | if (expect_false (preparecnt)) |
2072 | { |
2276 | { |
2073 | queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE); |
2277 | queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE); |
2074 | call_pending (EV_A); |
2278 | EV_INVOKE_PENDING; |
2075 | } |
2279 | } |
|
|
2280 | |
|
|
2281 | if (expect_false (loop_done)) |
|
|
2282 | break; |
2076 | |
2283 | |
2077 | /* we might have forked, so reify kernel state if necessary */ |
2284 | /* we might have forked, so reify kernel state if necessary */ |
2078 | if (expect_false (postfork)) |
2285 | if (expect_false (postfork)) |
2079 | loop_fork (EV_A); |
2286 | loop_fork (EV_A); |
2080 | |
2287 | |
… | |
… | |
2128 | waittime -= sleeptime; |
2335 | waittime -= sleeptime; |
2129 | } |
2336 | } |
2130 | } |
2337 | } |
2131 | } |
2338 | } |
2132 | |
2339 | |
|
|
2340 | #if EV_MINIMAL < 2 |
2133 | ++loop_count; |
2341 | ++loop_count; |
|
|
2342 | #endif |
|
|
2343 | assert ((loop_done = EVUNLOOP_RECURSE, 1)); /* assert for side effect */ |
2134 | backend_poll (EV_A_ waittime); |
2344 | backend_poll (EV_A_ waittime); |
|
|
2345 | assert ((loop_done = EVUNLOOP_CANCEL, 1)); /* assert for side effect */ |
2135 | |
2346 | |
2136 | /* update ev_rt_now, do magic */ |
2347 | /* update ev_rt_now, do magic */ |
2137 | time_update (EV_A_ waittime + sleeptime); |
2348 | time_update (EV_A_ waittime + sleeptime); |
2138 | } |
2349 | } |
2139 | |
2350 | |
… | |
… | |
2150 | |
2361 | |
2151 | /* queue check watchers, to be executed first */ |
2362 | /* queue check watchers, to be executed first */ |
2152 | if (expect_false (checkcnt)) |
2363 | if (expect_false (checkcnt)) |
2153 | queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK); |
2364 | queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK); |
2154 | |
2365 | |
2155 | call_pending (EV_A); |
2366 | EV_INVOKE_PENDING; |
2156 | } |
2367 | } |
2157 | while (expect_true ( |
2368 | while (expect_true ( |
2158 | activecnt |
2369 | activecnt |
2159 | && !loop_done |
2370 | && !loop_done |
2160 | && !(flags & (EVLOOP_ONESHOT | EVLOOP_NONBLOCK)) |
2371 | && !(flags & (EVLOOP_ONESHOT | EVLOOP_NONBLOCK)) |
2161 | )); |
2372 | )); |
2162 | |
2373 | |
2163 | if (loop_done == EVUNLOOP_ONE) |
2374 | if (loop_done == EVUNLOOP_ONE) |
2164 | loop_done = EVUNLOOP_CANCEL; |
2375 | loop_done = EVUNLOOP_CANCEL; |
2165 | |
2376 | |
|
|
2377 | #if EV_MINIMAL < 2 |
2166 | --loop_depth; |
2378 | --loop_depth; |
|
|
2379 | #endif |
2167 | } |
2380 | } |
2168 | |
2381 | |
2169 | void |
2382 | void |
2170 | ev_unloop (EV_P_ int how) |
2383 | ev_unloop (EV_P_ int how) |
2171 | { |
2384 | { |
… | |
… | |
2222 | inline_size void |
2435 | inline_size void |
2223 | wlist_del (WL *head, WL elem) |
2436 | wlist_del (WL *head, WL elem) |
2224 | { |
2437 | { |
2225 | while (*head) |
2438 | while (*head) |
2226 | { |
2439 | { |
2227 | if (*head == elem) |
2440 | if (expect_true (*head == elem)) |
2228 | { |
2441 | { |
2229 | *head = elem->next; |
2442 | *head = elem->next; |
2230 | return; |
2443 | break; |
2231 | } |
2444 | } |
2232 | |
2445 | |
2233 | head = &(*head)->next; |
2446 | head = &(*head)->next; |
2234 | } |
2447 | } |
2235 | } |
2448 | } |
… | |
… | |
2295 | |
2508 | |
2296 | if (expect_false (ev_is_active (w))) |
2509 | if (expect_false (ev_is_active (w))) |
2297 | return; |
2510 | return; |
2298 | |
2511 | |
2299 | assert (("libev: ev_io_start called with negative fd", fd >= 0)); |
2512 | assert (("libev: ev_io_start called with negative fd", fd >= 0)); |
2300 | 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)))); |
2301 | |
2514 | |
2302 | EV_FREQUENT_CHECK; |
2515 | EV_FREQUENT_CHECK; |
2303 | |
2516 | |
2304 | ev_start (EV_A_ (W)w, 1); |
2517 | ev_start (EV_A_ (W)w, 1); |
2305 | array_needsize (ANFD, anfds, anfdmax, fd + 1, array_init_zero); |
2518 | array_needsize (ANFD, anfds, anfdmax, fd + 1, array_init_zero); |
2306 | wlist_add (&anfds[fd].head, (WL)w); |
2519 | wlist_add (&anfds[fd].head, (WL)w); |
2307 | |
2520 | |
2308 | fd_change (EV_A_ fd, w->events & EV__IOFDSET | 1); |
2521 | fd_change (EV_A_ fd, w->events & EV__IOFDSET | EV_ANFD_REIFY); |
2309 | w->events &= ~EV__IOFDSET; |
2522 | w->events &= ~EV__IOFDSET; |
2310 | |
2523 | |
2311 | EV_FREQUENT_CHECK; |
2524 | EV_FREQUENT_CHECK; |
2312 | } |
2525 | } |
2313 | |
2526 | |
… | |
… | |
2375 | timers [active] = timers [timercnt + HEAP0]; |
2588 | timers [active] = timers [timercnt + HEAP0]; |
2376 | adjustheap (timers, timercnt, active); |
2589 | adjustheap (timers, timercnt, active); |
2377 | } |
2590 | } |
2378 | } |
2591 | } |
2379 | |
2592 | |
2380 | EV_FREQUENT_CHECK; |
|
|
2381 | |
|
|
2382 | ev_at (w) -= mn_now; |
2593 | ev_at (w) -= mn_now; |
2383 | |
2594 | |
2384 | ev_stop (EV_A_ (W)w); |
2595 | ev_stop (EV_A_ (W)w); |
|
|
2596 | |
|
|
2597 | EV_FREQUENT_CHECK; |
2385 | } |
2598 | } |
2386 | |
2599 | |
2387 | void noinline |
2600 | void noinline |
2388 | ev_timer_again (EV_P_ ev_timer *w) |
2601 | ev_timer_again (EV_P_ ev_timer *w) |
2389 | { |
2602 | { |
… | |
… | |
2407 | } |
2620 | } |
2408 | |
2621 | |
2409 | EV_FREQUENT_CHECK; |
2622 | EV_FREQUENT_CHECK; |
2410 | } |
2623 | } |
2411 | |
2624 | |
|
|
2625 | ev_tstamp |
|
|
2626 | ev_timer_remaining (EV_P_ ev_timer *w) |
|
|
2627 | { |
|
|
2628 | return ev_at (w) - (ev_is_active (w) ? mn_now : 0.); |
|
|
2629 | } |
|
|
2630 | |
2412 | #if EV_PERIODIC_ENABLE |
2631 | #if EV_PERIODIC_ENABLE |
2413 | void noinline |
2632 | void noinline |
2414 | ev_periodic_start (EV_P_ ev_periodic *w) |
2633 | ev_periodic_start (EV_P_ ev_periodic *w) |
2415 | { |
2634 | { |
2416 | if (expect_false (ev_is_active (w))) |
2635 | if (expect_false (ev_is_active (w))) |
… | |
… | |
2462 | periodics [active] = periodics [periodiccnt + HEAP0]; |
2681 | periodics [active] = periodics [periodiccnt + HEAP0]; |
2463 | adjustheap (periodics, periodiccnt, active); |
2682 | adjustheap (periodics, periodiccnt, active); |
2464 | } |
2683 | } |
2465 | } |
2684 | } |
2466 | |
2685 | |
2467 | EV_FREQUENT_CHECK; |
|
|
2468 | |
|
|
2469 | ev_stop (EV_A_ (W)w); |
2686 | ev_stop (EV_A_ (W)w); |
|
|
2687 | |
|
|
2688 | EV_FREQUENT_CHECK; |
2470 | } |
2689 | } |
2471 | |
2690 | |
2472 | void noinline |
2691 | void noinline |
2473 | ev_periodic_again (EV_P_ ev_periodic *w) |
2692 | ev_periodic_again (EV_P_ ev_periodic *w) |
2474 | { |
2693 | { |
… | |
… | |
2483 | #endif |
2702 | #endif |
2484 | |
2703 | |
2485 | void noinline |
2704 | void noinline |
2486 | ev_signal_start (EV_P_ ev_signal *w) |
2705 | ev_signal_start (EV_P_ ev_signal *w) |
2487 | { |
2706 | { |
2488 | #if EV_MULTIPLICITY |
|
|
2489 | assert (("libev: signal watchers are only supported in the default loop", loop == ev_default_loop_ptr)); |
|
|
2490 | #endif |
|
|
2491 | if (expect_false (ev_is_active (w))) |
2707 | if (expect_false (ev_is_active (w))) |
2492 | return; |
2708 | return; |
2493 | |
2709 | |
2494 | assert (("libev: ev_signal_start called with illegal signal number", w->signum > 0)); |
2710 | assert (("libev: ev_signal_start called with illegal signal number", w->signum > 0 && w->signum < EV_NSIG)); |
2495 | |
2711 | |
2496 | evpipe_init (EV_A); |
2712 | #if EV_MULTIPLICITY |
|
|
2713 | assert (("libev: a signal must not be attached to two different loops", |
|
|
2714 | !signals [w->signum - 1].loop || signals [w->signum - 1].loop == loop)); |
2497 | |
2715 | |
2498 | EV_FREQUENT_CHECK; |
2716 | signals [w->signum - 1].loop = EV_A; |
|
|
2717 | #endif |
2499 | |
2718 | |
|
|
2719 | EV_FREQUENT_CHECK; |
|
|
2720 | |
|
|
2721 | #if EV_USE_SIGNALFD |
|
|
2722 | if (sigfd == -2) |
2500 | { |
2723 | { |
2501 | #ifndef _WIN32 |
2724 | sigfd = signalfd (-1, &sigfd_set, SFD_NONBLOCK | SFD_CLOEXEC); |
2502 | sigset_t full, prev; |
2725 | if (sigfd < 0 && errno == EINVAL) |
2503 | sigfillset (&full); |
2726 | sigfd = signalfd (-1, &sigfd_set, 0); /* retry without flags */ |
2504 | sigprocmask (SIG_SETMASK, &full, &prev); |
|
|
2505 | #endif |
|
|
2506 | |
2727 | |
2507 | array_needsize (ANSIG, signals, signalmax, w->signum, array_init_zero); |
2728 | if (sigfd >= 0) |
|
|
2729 | { |
|
|
2730 | fd_intern (sigfd); /* doing it twice will not hurt */ |
2508 | |
2731 | |
2509 | #ifndef _WIN32 |
2732 | sigemptyset (&sigfd_set); |
2510 | sigprocmask (SIG_SETMASK, &prev, 0); |
2733 | |
2511 | #endif |
2734 | ev_io_init (&sigfd_w, sigfdcb, sigfd, EV_READ); |
|
|
2735 | ev_set_priority (&sigfd_w, EV_MAXPRI); |
|
|
2736 | ev_io_start (EV_A_ &sigfd_w); |
|
|
2737 | ev_unref (EV_A); /* signalfd watcher should not keep loop alive */ |
|
|
2738 | } |
2512 | } |
2739 | } |
|
|
2740 | |
|
|
2741 | if (sigfd >= 0) |
|
|
2742 | { |
|
|
2743 | /* TODO: check .head */ |
|
|
2744 | sigaddset (&sigfd_set, w->signum); |
|
|
2745 | sigprocmask (SIG_BLOCK, &sigfd_set, 0); |
|
|
2746 | |
|
|
2747 | signalfd (sigfd, &sigfd_set, 0); |
|
|
2748 | } |
|
|
2749 | #endif |
2513 | |
2750 | |
2514 | ev_start (EV_A_ (W)w, 1); |
2751 | ev_start (EV_A_ (W)w, 1); |
2515 | wlist_add (&signals [w->signum - 1].head, (WL)w); |
2752 | wlist_add (&signals [w->signum - 1].head, (WL)w); |
2516 | |
2753 | |
2517 | if (!((WL)w)->next) |
2754 | if (!((WL)w)->next) |
|
|
2755 | # if EV_USE_SIGNALFD |
|
|
2756 | if (sigfd < 0) /*TODO*/ |
|
|
2757 | # endif |
2518 | { |
2758 | { |
2519 | #if _WIN32 |
2759 | # ifdef _WIN32 |
|
|
2760 | evpipe_init (EV_A); |
|
|
2761 | |
2520 | signal (w->signum, ev_sighandler); |
2762 | signal (w->signum, ev_sighandler); |
2521 | #else |
2763 | # else |
2522 | struct sigaction sa; |
2764 | struct sigaction sa; |
|
|
2765 | |
|
|
2766 | evpipe_init (EV_A); |
|
|
2767 | |
2523 | sa.sa_handler = ev_sighandler; |
2768 | sa.sa_handler = ev_sighandler; |
2524 | sigfillset (&sa.sa_mask); |
2769 | sigfillset (&sa.sa_mask); |
2525 | sa.sa_flags = SA_RESTART; /* if restarting works we save one iteration */ |
2770 | sa.sa_flags = SA_RESTART; /* if restarting works we save one iteration */ |
2526 | sigaction (w->signum, &sa, 0); |
2771 | sigaction (w->signum, &sa, 0); |
|
|
2772 | |
|
|
2773 | sigemptyset (&sa.sa_mask); |
|
|
2774 | sigaddset (&sa.sa_mask, w->signum); |
|
|
2775 | sigprocmask (SIG_UNBLOCK, &sa.sa_mask, 0); |
2527 | #endif |
2776 | #endif |
2528 | } |
2777 | } |
2529 | |
2778 | |
2530 | EV_FREQUENT_CHECK; |
2779 | EV_FREQUENT_CHECK; |
2531 | } |
2780 | } |
2532 | |
2781 | |
2533 | void noinline |
2782 | void noinline |
… | |
… | |
2541 | |
2790 | |
2542 | wlist_del (&signals [w->signum - 1].head, (WL)w); |
2791 | wlist_del (&signals [w->signum - 1].head, (WL)w); |
2543 | ev_stop (EV_A_ (W)w); |
2792 | ev_stop (EV_A_ (W)w); |
2544 | |
2793 | |
2545 | if (!signals [w->signum - 1].head) |
2794 | if (!signals [w->signum - 1].head) |
|
|
2795 | { |
|
|
2796 | #if EV_MULTIPLICITY |
|
|
2797 | signals [w->signum - 1].loop = 0; /* unattach from signal */ |
|
|
2798 | #endif |
|
|
2799 | #if EV_USE_SIGNALFD |
|
|
2800 | if (sigfd >= 0) |
|
|
2801 | { |
|
|
2802 | sigset_t ss; |
|
|
2803 | |
|
|
2804 | sigemptyset (&ss); |
|
|
2805 | sigaddset (&ss, w->signum); |
|
|
2806 | sigdelset (&sigfd_set, w->signum); |
|
|
2807 | |
|
|
2808 | signalfd (sigfd, &sigfd_set, 0); |
|
|
2809 | sigprocmask (SIG_UNBLOCK, &ss, 0); |
|
|
2810 | } |
|
|
2811 | else |
|
|
2812 | #endif |
2546 | signal (w->signum, SIG_DFL); |
2813 | signal (w->signum, SIG_DFL); |
|
|
2814 | } |
2547 | |
2815 | |
2548 | EV_FREQUENT_CHECK; |
2816 | EV_FREQUENT_CHECK; |
2549 | } |
2817 | } |
2550 | |
2818 | |
2551 | void |
2819 | void |
… | |
… | |
2592 | #define MIN_STAT_INTERVAL 0.1074891 |
2860 | #define MIN_STAT_INTERVAL 0.1074891 |
2593 | |
2861 | |
2594 | 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); |
2595 | |
2863 | |
2596 | #if EV_USE_INOTIFY |
2864 | #if EV_USE_INOTIFY |
2597 | # 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) |
2598 | |
2868 | |
2599 | static void noinline |
2869 | static void noinline |
2600 | infy_add (EV_P_ ev_stat *w) |
2870 | infy_add (EV_P_ ev_stat *w) |
2601 | { |
2871 | { |
2602 | 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); |
2603 | |
2873 | |
2604 | 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 */ |
2605 | { |
2894 | } |
|
|
2895 | else |
|
|
2896 | { |
|
|
2897 | /* can't use inotify, continue to stat */ |
2606 | w->timer.repeat = w->interval ? w->interval : DEF_STAT_INTERVAL; |
2898 | w->timer.repeat = w->interval ? w->interval : DEF_STAT_INTERVAL; |
2607 | ev_timer_again (EV_A_ &w->timer); /* this is not race-free, so we still need to recheck periodically */ |
|
|
2608 | |
2899 | |
2609 | /* monitor some parent directory for speedup hints */ |
2900 | /* if path is not there, monitor some parent directory for speedup hints */ |
2610 | /* 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, */ |
2611 | /* but an efficiency issue only */ |
2902 | /* but an efficiency issue only */ |
2612 | if ((errno == ENOENT || errno == EACCES) && strlen (w->path) < 4096) |
2903 | if ((errno == ENOENT || errno == EACCES) && strlen (w->path) < 4096) |
2613 | { |
2904 | { |
2614 | char path [4096]; |
2905 | char path [4096]; |
… | |
… | |
2630 | while (w->wd < 0 && (errno == ENOENT || errno == EACCES)); |
2921 | while (w->wd < 0 && (errno == ENOENT || errno == EACCES)); |
2631 | } |
2922 | } |
2632 | } |
2923 | } |
2633 | |
2924 | |
2634 | if (w->wd >= 0) |
2925 | if (w->wd >= 0) |
2635 | { |
|
|
2636 | 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); |
2637 | |
2927 | |
2638 | /* now local changes will be tracked by inotify, but remote changes won't */ |
2928 | /* now re-arm timer, if required */ |
2639 | /* unless the filesystem it known to be local, we therefore still poll */ |
2929 | if (ev_is_active (&w->timer)) ev_ref (EV_A); |
2640 | /* also do poll on <2.6.25, but with normal frequency */ |
|
|
2641 | struct statfs sfs; |
|
|
2642 | |
|
|
2643 | if (fs_2625 && !statfs (w->path, &sfs)) |
|
|
2644 | if (sfs.f_type == 0x1373 /* devfs */ |
|
|
2645 | || sfs.f_type == 0xEF53 /* ext2/3 */ |
|
|
2646 | || sfs.f_type == 0x3153464a /* jfs */ |
|
|
2647 | || sfs.f_type == 0x52654973 /* reiser3 */ |
|
|
2648 | || sfs.f_type == 0x01021994 /* tempfs */ |
|
|
2649 | || sfs.f_type == 0x58465342 /* xfs */) |
|
|
2650 | return; |
|
|
2651 | |
|
|
2652 | w->timer.repeat = w->interval ? w->interval : fs_2625 ? NFS_STAT_INTERVAL : DEF_STAT_INTERVAL; |
|
|
2653 | ev_timer_again (EV_A_ &w->timer); |
2930 | ev_timer_again (EV_A_ &w->timer); |
2654 | } |
2931 | if (ev_is_active (&w->timer)) ev_unref (EV_A); |
2655 | } |
2932 | } |
2656 | |
2933 | |
2657 | static void noinline |
2934 | static void noinline |
2658 | infy_del (EV_P_ ev_stat *w) |
2935 | infy_del (EV_P_ ev_stat *w) |
2659 | { |
2936 | { |
… | |
… | |
2704 | |
2981 | |
2705 | static void |
2982 | static void |
2706 | infy_cb (EV_P_ ev_io *w, int revents) |
2983 | infy_cb (EV_P_ ev_io *w, int revents) |
2707 | { |
2984 | { |
2708 | char buf [EV_INOTIFY_BUFSIZE]; |
2985 | char buf [EV_INOTIFY_BUFSIZE]; |
2709 | struct inotify_event *ev = (struct inotify_event *)buf; |
|
|
2710 | int ofs; |
2986 | int ofs; |
2711 | int len = read (fs_fd, buf, sizeof (buf)); |
2987 | int len = read (fs_fd, buf, sizeof (buf)); |
2712 | |
2988 | |
2713 | 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); |
2714 | 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 | } |
2715 | } |
2995 | } |
2716 | |
2996 | |
2717 | inline_size void |
2997 | inline_size void |
2718 | check_2625 (EV_P) |
2998 | check_2625 (EV_P) |
2719 | { |
2999 | { |
… | |
… | |
2735 | return; |
3015 | return; |
2736 | |
3016 | |
2737 | fs_2625 = 1; |
3017 | fs_2625 = 1; |
2738 | } |
3018 | } |
2739 | |
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 | |
2740 | inline_size void |
3031 | inline_size void |
2741 | infy_init (EV_P) |
3032 | infy_init (EV_P) |
2742 | { |
3033 | { |
2743 | if (fs_fd != -2) |
3034 | if (fs_fd != -2) |
2744 | return; |
3035 | return; |
2745 | |
3036 | |
2746 | fs_fd = -1; |
3037 | fs_fd = -1; |
2747 | |
3038 | |
2748 | check_2625 (EV_A); |
3039 | check_2625 (EV_A); |
2749 | |
3040 | |
2750 | fs_fd = inotify_init (); |
3041 | fs_fd = infy_newfd (); |
2751 | |
3042 | |
2752 | if (fs_fd >= 0) |
3043 | if (fs_fd >= 0) |
2753 | { |
3044 | { |
|
|
3045 | fd_intern (fs_fd); |
2754 | ev_io_init (&fs_w, infy_cb, fs_fd, EV_READ); |
3046 | ev_io_init (&fs_w, infy_cb, fs_fd, EV_READ); |
2755 | ev_set_priority (&fs_w, EV_MAXPRI); |
3047 | ev_set_priority (&fs_w, EV_MAXPRI); |
2756 | ev_io_start (EV_A_ &fs_w); |
3048 | ev_io_start (EV_A_ &fs_w); |
|
|
3049 | ev_unref (EV_A); |
2757 | } |
3050 | } |
2758 | } |
3051 | } |
2759 | |
3052 | |
2760 | inline_size void |
3053 | inline_size void |
2761 | infy_fork (EV_P) |
3054 | infy_fork (EV_P) |
… | |
… | |
2763 | int slot; |
3056 | int slot; |
2764 | |
3057 | |
2765 | if (fs_fd < 0) |
3058 | if (fs_fd < 0) |
2766 | return; |
3059 | return; |
2767 | |
3060 | |
|
|
3061 | ev_ref (EV_A); |
|
|
3062 | ev_io_stop (EV_A_ &fs_w); |
2768 | close (fs_fd); |
3063 | close (fs_fd); |
2769 | 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 | } |
2770 | |
3073 | |
2771 | for (slot = 0; slot < EV_INOTIFY_HASHSIZE; ++slot) |
3074 | for (slot = 0; slot < EV_INOTIFY_HASHSIZE; ++slot) |
2772 | { |
3075 | { |
2773 | WL w_ = fs_hash [slot].head; |
3076 | WL w_ = fs_hash [slot].head; |
2774 | fs_hash [slot].head = 0; |
3077 | fs_hash [slot].head = 0; |
… | |
… | |
2781 | w->wd = -1; |
3084 | w->wd = -1; |
2782 | |
3085 | |
2783 | if (fs_fd >= 0) |
3086 | if (fs_fd >= 0) |
2784 | infy_add (EV_A_ w); /* re-add, no matter what */ |
3087 | infy_add (EV_A_ w); /* re-add, no matter what */ |
2785 | 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); |
2786 | 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 | } |
2787 | } |
3095 | } |
2788 | } |
3096 | } |
2789 | } |
3097 | } |
2790 | |
3098 | |
2791 | #endif |
3099 | #endif |
… | |
… | |
2808 | static void noinline |
3116 | static void noinline |
2809 | stat_timer_cb (EV_P_ ev_timer *w_, int revents) |
3117 | stat_timer_cb (EV_P_ ev_timer *w_, int revents) |
2810 | { |
3118 | { |
2811 | ev_stat *w = (ev_stat *)(((char *)w_) - offsetof (ev_stat, timer)); |
3119 | ev_stat *w = (ev_stat *)(((char *)w_) - offsetof (ev_stat, timer)); |
2812 | |
3120 | |
2813 | /* we copy this here each the time so that */ |
3121 | ev_statdata prev = w->attr; |
2814 | /* prev has the old value when the callback gets invoked */ |
|
|
2815 | w->prev = w->attr; |
|
|
2816 | ev_stat_stat (EV_A_ w); |
3122 | ev_stat_stat (EV_A_ w); |
2817 | |
3123 | |
2818 | /* 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 */ |
2819 | if ( |
3125 | if ( |
2820 | w->prev.st_dev != w->attr.st_dev |
3126 | prev.st_dev != w->attr.st_dev |
2821 | || w->prev.st_ino != w->attr.st_ino |
3127 | || prev.st_ino != w->attr.st_ino |
2822 | || w->prev.st_mode != w->attr.st_mode |
3128 | || prev.st_mode != w->attr.st_mode |
2823 | || w->prev.st_nlink != w->attr.st_nlink |
3129 | || prev.st_nlink != w->attr.st_nlink |
2824 | || w->prev.st_uid != w->attr.st_uid |
3130 | || prev.st_uid != w->attr.st_uid |
2825 | || w->prev.st_gid != w->attr.st_gid |
3131 | || prev.st_gid != w->attr.st_gid |
2826 | || w->prev.st_rdev != w->attr.st_rdev |
3132 | || prev.st_rdev != w->attr.st_rdev |
2827 | || w->prev.st_size != w->attr.st_size |
3133 | || prev.st_size != w->attr.st_size |
2828 | || w->prev.st_atime != w->attr.st_atime |
3134 | || prev.st_atime != w->attr.st_atime |
2829 | || w->prev.st_mtime != w->attr.st_mtime |
3135 | || prev.st_mtime != w->attr.st_mtime |
2830 | || w->prev.st_ctime != w->attr.st_ctime |
3136 | || prev.st_ctime != w->attr.st_ctime |
2831 | ) { |
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 | |
2832 | #if EV_USE_INOTIFY |
3143 | #if EV_USE_INOTIFY |
2833 | if (fs_fd >= 0) |
3144 | if (fs_fd >= 0) |
2834 | { |
3145 | { |
2835 | infy_del (EV_A_ w); |
3146 | infy_del (EV_A_ w); |
2836 | infy_add (EV_A_ w); |
3147 | infy_add (EV_A_ w); |
… | |
… | |
2861 | |
3172 | |
2862 | if (fs_fd >= 0) |
3173 | if (fs_fd >= 0) |
2863 | infy_add (EV_A_ w); |
3174 | infy_add (EV_A_ w); |
2864 | else |
3175 | else |
2865 | #endif |
3176 | #endif |
|
|
3177 | { |
2866 | ev_timer_again (EV_A_ &w->timer); |
3178 | ev_timer_again (EV_A_ &w->timer); |
|
|
3179 | ev_unref (EV_A); |
|
|
3180 | } |
2867 | |
3181 | |
2868 | ev_start (EV_A_ (W)w, 1); |
3182 | ev_start (EV_A_ (W)w, 1); |
2869 | |
3183 | |
2870 | EV_FREQUENT_CHECK; |
3184 | EV_FREQUENT_CHECK; |
2871 | } |
3185 | } |
… | |
… | |
2880 | EV_FREQUENT_CHECK; |
3194 | EV_FREQUENT_CHECK; |
2881 | |
3195 | |
2882 | #if EV_USE_INOTIFY |
3196 | #if EV_USE_INOTIFY |
2883 | infy_del (EV_A_ w); |
3197 | infy_del (EV_A_ w); |
2884 | #endif |
3198 | #endif |
|
|
3199 | |
|
|
3200 | if (ev_is_active (&w->timer)) |
|
|
3201 | { |
|
|
3202 | ev_ref (EV_A); |
2885 | ev_timer_stop (EV_A_ &w->timer); |
3203 | ev_timer_stop (EV_A_ &w->timer); |
|
|
3204 | } |
2886 | |
3205 | |
2887 | ev_stop (EV_A_ (W)w); |
3206 | ev_stop (EV_A_ (W)w); |
2888 | |
3207 | |
2889 | EV_FREQUENT_CHECK; |
3208 | EV_FREQUENT_CHECK; |
2890 | } |
3209 | } |
… | |
… | |
3031 | embed_prepare_cb (EV_P_ ev_prepare *prepare, int revents) |
3350 | embed_prepare_cb (EV_P_ ev_prepare *prepare, int revents) |
3032 | { |
3351 | { |
3033 | ev_embed *w = (ev_embed *)(((char *)prepare) - offsetof (ev_embed, prepare)); |
3352 | ev_embed *w = (ev_embed *)(((char *)prepare) - offsetof (ev_embed, prepare)); |
3034 | |
3353 | |
3035 | { |
3354 | { |
3036 | struct ev_loop *loop = w->other; |
3355 | EV_P = w->other; |
3037 | |
3356 | |
3038 | while (fdchangecnt) |
3357 | while (fdchangecnt) |
3039 | { |
3358 | { |
3040 | fd_reify (EV_A); |
3359 | fd_reify (EV_A); |
3041 | ev_loop (EV_A_ EVLOOP_NONBLOCK); |
3360 | ev_loop (EV_A_ EVLOOP_NONBLOCK); |
… | |
… | |
3049 | ev_embed *w = (ev_embed *)(((char *)fork_w) - offsetof (ev_embed, fork)); |
3368 | ev_embed *w = (ev_embed *)(((char *)fork_w) - offsetof (ev_embed, fork)); |
3050 | |
3369 | |
3051 | ev_embed_stop (EV_A_ w); |
3370 | ev_embed_stop (EV_A_ w); |
3052 | |
3371 | |
3053 | { |
3372 | { |
3054 | struct ev_loop *loop = w->other; |
3373 | EV_P = w->other; |
3055 | |
3374 | |
3056 | ev_loop_fork (EV_A); |
3375 | ev_loop_fork (EV_A); |
3057 | ev_loop (EV_A_ EVLOOP_NONBLOCK); |
3376 | ev_loop (EV_A_ EVLOOP_NONBLOCK); |
3058 | } |
3377 | } |
3059 | |
3378 | |
… | |
… | |
3073 | { |
3392 | { |
3074 | if (expect_false (ev_is_active (w))) |
3393 | if (expect_false (ev_is_active (w))) |
3075 | return; |
3394 | return; |
3076 | |
3395 | |
3077 | { |
3396 | { |
3078 | struct ev_loop *loop = w->other; |
3397 | EV_P = w->other; |
3079 | assert (("libev: loop to be embedded is not embeddable", backend & ev_embeddable_backends ())); |
3398 | assert (("libev: loop to be embedded is not embeddable", backend & ev_embeddable_backends ())); |
3080 | ev_io_init (&w->io, embed_io_cb, backend_fd, EV_READ); |
3399 | ev_io_init (&w->io, embed_io_cb, backend_fd, EV_READ); |
3081 | } |
3400 | } |
3082 | |
3401 | |
3083 | EV_FREQUENT_CHECK; |
3402 | EV_FREQUENT_CHECK; |
… | |
… | |
3110 | |
3429 | |
3111 | ev_io_stop (EV_A_ &w->io); |
3430 | ev_io_stop (EV_A_ &w->io); |
3112 | ev_prepare_stop (EV_A_ &w->prepare); |
3431 | ev_prepare_stop (EV_A_ &w->prepare); |
3113 | ev_fork_stop (EV_A_ &w->fork); |
3432 | ev_fork_stop (EV_A_ &w->fork); |
3114 | |
3433 | |
|
|
3434 | ev_stop (EV_A_ (W)w); |
|
|
3435 | |
3115 | EV_FREQUENT_CHECK; |
3436 | EV_FREQUENT_CHECK; |
3116 | } |
3437 | } |
3117 | #endif |
3438 | #endif |
3118 | |
3439 | |
3119 | #if EV_FORK_ENABLE |
3440 | #if EV_FORK_ENABLE |
… | |
… | |
3195 | |
3516 | |
3196 | void |
3517 | void |
3197 | ev_async_send (EV_P_ ev_async *w) |
3518 | ev_async_send (EV_P_ ev_async *w) |
3198 | { |
3519 | { |
3199 | w->sent = 1; |
3520 | w->sent = 1; |
3200 | evpipe_write (EV_A_ &gotasync); |
3521 | evpipe_write (EV_A_ &async_pending); |
3201 | } |
3522 | } |
3202 | #endif |
3523 | #endif |
3203 | |
3524 | |
3204 | /*****************************************************************************/ |
3525 | /*****************************************************************************/ |
3205 | |
3526 | |
… | |
… | |
3354 | if (types & EV_CHECK) |
3675 | if (types & EV_CHECK) |
3355 | for (i = checkcnt; i--; ) |
3676 | for (i = checkcnt; i--; ) |
3356 | cb (EV_A_ EV_CHECK, checks [i]); |
3677 | cb (EV_A_ EV_CHECK, checks [i]); |
3357 | |
3678 | |
3358 | if (types & EV_SIGNAL) |
3679 | if (types & EV_SIGNAL) |
3359 | for (i = 0; i < signalmax; ++i) |
3680 | for (i = 0; i < EV_NSIG - 1; ++i) |
3360 | for (wl = signals [i].head; wl; ) |
3681 | for (wl = signals [i].head; wl; ) |
3361 | { |
3682 | { |
3362 | wn = wl->next; |
3683 | wn = wl->next; |
3363 | cb (EV_A_ EV_SIGNAL, wl); |
3684 | cb (EV_A_ EV_SIGNAL, wl); |
3364 | wl = wn; |
3685 | wl = wn; |