1 | /* |
1 | /* |
2 | * libev event processing core, watcher management |
2 | * libev event processing core, watcher management |
3 | * |
3 | * |
4 | * Copyright (c) 2007,2008,2009,2010 Marc Alexander Lehmann <libev@schmorp.de> |
4 | * Copyright (c) 2007,2008,2009,2010,2011 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 | * |
10 | * 1. Redistributions of source code must retain the above copyright notice, |
10 | * 1. Redistributions of source code must retain the above copyright notice, |
11 | * this list of conditions and the following disclaimer. |
11 | * this list of conditions and the following disclaimer. |
12 | * |
12 | * |
13 | * 2. Redistributions in binary form must reproduce the above copyright |
13 | * 2. Redistributions in binary form must reproduce the above copyright |
14 | * notice, this list of conditions and the following disclaimer in the |
14 | * notice, this list of conditions and the following disclaimer in the |
15 | * documentation and/or other materials provided with the distribution. |
15 | * documentation and/or other materials provided with the distribution. |
16 | * |
16 | * |
17 | * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR IMPLIED |
17 | * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR IMPLIED |
18 | * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MER- |
18 | * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MER- |
19 | * CHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO |
19 | * CHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO |
20 | * EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPE- |
20 | * EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPE- |
21 | * CIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, |
21 | * CIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, |
… | |
… | |
35 | * and other provisions required by the GPL. If you do not delete the |
35 | * and other provisions required by the GPL. If you do not delete the |
36 | * provisions above, a recipient may use your version of this file under |
36 | * provisions above, a recipient may use your version of this file under |
37 | * either the BSD or the GPL. |
37 | * either the BSD or the GPL. |
38 | */ |
38 | */ |
39 | |
39 | |
40 | #ifdef __cplusplus |
|
|
41 | extern "C" { |
|
|
42 | #endif |
|
|
43 | |
|
|
44 | /* this big block deduces configuration from config.h */ |
40 | /* this big block deduces configuration from config.h */ |
45 | #ifndef EV_STANDALONE |
41 | #ifndef EV_STANDALONE |
46 | # ifdef EV_CONFIG_H |
42 | # ifdef EV_CONFIG_H |
47 | # include EV_CONFIG_H |
43 | # include EV_CONFIG_H |
48 | # else |
44 | # else |
49 | # include "config.h" |
45 | # include "config.h" |
50 | # endif |
46 | # endif |
|
|
47 | |
|
|
48 | #if HAVE_FLOOR |
|
|
49 | # ifndef EV_USE_FLOOR |
|
|
50 | # define EV_USE_FLOOR 1 |
|
|
51 | # endif |
|
|
52 | #endif |
51 | |
53 | |
52 | # if HAVE_CLOCK_SYSCALL |
54 | # if HAVE_CLOCK_SYSCALL |
53 | # ifndef EV_USE_CLOCK_SYSCALL |
55 | # ifndef EV_USE_CLOCK_SYSCALL |
54 | # define EV_USE_CLOCK_SYSCALL 1 |
56 | # define EV_USE_CLOCK_SYSCALL 1 |
55 | # ifndef EV_USE_REALTIME |
57 | # ifndef EV_USE_REALTIME |
… | |
… | |
160 | # define EV_USE_EVENTFD 0 |
162 | # define EV_USE_EVENTFD 0 |
161 | # endif |
163 | # endif |
162 | |
164 | |
163 | #endif |
165 | #endif |
164 | |
166 | |
165 | #include <math.h> |
|
|
166 | #include <stdlib.h> |
167 | #include <stdlib.h> |
167 | #include <string.h> |
168 | #include <string.h> |
168 | #include <fcntl.h> |
169 | #include <fcntl.h> |
169 | #include <stddef.h> |
170 | #include <stddef.h> |
170 | |
171 | |
… | |
… | |
181 | #ifdef EV_H |
182 | #ifdef EV_H |
182 | # include EV_H |
183 | # include EV_H |
183 | #else |
184 | #else |
184 | # include "ev.h" |
185 | # include "ev.h" |
185 | #endif |
186 | #endif |
|
|
187 | |
|
|
188 | EV_CPP(extern "C" {) |
186 | |
189 | |
187 | #ifndef _WIN32 |
190 | #ifndef _WIN32 |
188 | # include <sys/time.h> |
191 | # include <sys/time.h> |
189 | # include <sys/wait.h> |
192 | # include <sys/wait.h> |
190 | # include <unistd.h> |
193 | # include <unistd.h> |
… | |
… | |
234 | /* to make it compile regardless, just remove the above line, */ |
237 | /* to make it compile regardless, just remove the above line, */ |
235 | /* but consider reporting it, too! :) */ |
238 | /* but consider reporting it, too! :) */ |
236 | # define EV_NSIG 65 |
239 | # define EV_NSIG 65 |
237 | #endif |
240 | #endif |
238 | |
241 | |
|
|
242 | #ifndef EV_USE_FLOOR |
|
|
243 | # define EV_USE_FLOOR 0 |
|
|
244 | #endif |
|
|
245 | |
239 | #ifndef EV_USE_CLOCK_SYSCALL |
246 | #ifndef EV_USE_CLOCK_SYSCALL |
240 | # if __linux && __GLIBC__ >= 2 |
247 | # if __linux && __GLIBC__ >= 2 |
241 | # define EV_USE_CLOCK_SYSCALL EV_FEATURE_OS |
248 | # define EV_USE_CLOCK_SYSCALL EV_FEATURE_OS |
242 | # else |
249 | # else |
243 | # define EV_USE_CLOCK_SYSCALL 0 |
250 | # define EV_USE_CLOCK_SYSCALL 0 |
… | |
… | |
378 | # undef EV_USE_INOTIFY |
385 | # undef EV_USE_INOTIFY |
379 | # define EV_USE_INOTIFY 0 |
386 | # define EV_USE_INOTIFY 0 |
380 | #endif |
387 | #endif |
381 | |
388 | |
382 | #if !EV_USE_NANOSLEEP |
389 | #if !EV_USE_NANOSLEEP |
383 | # ifndef _WIN32 |
390 | /* hp-ux has it in sys/time.h, which we unconditionally include above */ |
|
|
391 | # if !defined(_WIN32) && !defined(__hpux) |
384 | # include <sys/select.h> |
392 | # include <sys/select.h> |
385 | # endif |
393 | # endif |
386 | #endif |
394 | #endif |
387 | |
395 | |
388 | #if EV_USE_INOTIFY |
396 | #if EV_USE_INOTIFY |
389 | # include <sys/utsname.h> |
|
|
390 | # include <sys/statfs.h> |
397 | # include <sys/statfs.h> |
391 | # include <sys/inotify.h> |
398 | # include <sys/inotify.h> |
392 | /* some very old inotify.h headers don't have IN_DONT_FOLLOW */ |
399 | /* some very old inotify.h headers don't have IN_DONT_FOLLOW */ |
393 | # ifndef IN_DONT_FOLLOW |
400 | # ifndef IN_DONT_FOLLOW |
394 | # undef EV_USE_INOTIFY |
401 | # undef EV_USE_INOTIFY |
… | |
… | |
411 | # define EFD_CLOEXEC O_CLOEXEC |
418 | # define EFD_CLOEXEC O_CLOEXEC |
412 | # else |
419 | # else |
413 | # define EFD_CLOEXEC 02000000 |
420 | # define EFD_CLOEXEC 02000000 |
414 | # endif |
421 | # endif |
415 | # endif |
422 | # endif |
416 | # ifdef __cplusplus |
|
|
417 | extern "C" { |
|
|
418 | # endif |
|
|
419 | int (eventfd) (unsigned int initval, int flags); |
423 | EV_CPP(extern "C") int (eventfd) (unsigned int initval, int flags); |
420 | # ifdef __cplusplus |
|
|
421 | } |
|
|
422 | # endif |
|
|
423 | #endif |
424 | #endif |
424 | |
425 | |
425 | #if EV_USE_SIGNALFD |
426 | #if EV_USE_SIGNALFD |
426 | /* our minimum requirement is glibc 2.7 which has the stub, but not the header */ |
427 | /* our minimum requirement is glibc 2.7 which has the stub, but not the header */ |
427 | # include <stdint.h> |
428 | # include <stdint.h> |
… | |
… | |
433 | # define SFD_CLOEXEC O_CLOEXEC |
434 | # define SFD_CLOEXEC O_CLOEXEC |
434 | # else |
435 | # else |
435 | # define SFD_CLOEXEC 02000000 |
436 | # define SFD_CLOEXEC 02000000 |
436 | # endif |
437 | # endif |
437 | # endif |
438 | # endif |
438 | # ifdef __cplusplus |
|
|
439 | extern "C" { |
|
|
440 | # endif |
|
|
441 | int signalfd (int fd, const sigset_t *mask, int flags); |
439 | EV_CPP (extern "C") int signalfd (int fd, const sigset_t *mask, int flags); |
442 | |
440 | |
443 | struct signalfd_siginfo |
441 | struct signalfd_siginfo |
444 | { |
442 | { |
445 | uint32_t ssi_signo; |
443 | uint32_t ssi_signo; |
446 | char pad[128 - sizeof (uint32_t)]; |
444 | char pad[128 - sizeof (uint32_t)]; |
447 | }; |
445 | }; |
448 | # ifdef __cplusplus |
|
|
449 | } |
|
|
450 | # endif |
|
|
451 | #endif |
446 | #endif |
452 | |
447 | |
453 | /**/ |
448 | /**/ |
454 | |
449 | |
455 | #if EV_VERIFY >= 3 |
450 | #if EV_VERIFY >= 3 |
… | |
… | |
457 | #else |
452 | #else |
458 | # define EV_FREQUENT_CHECK do { } while (0) |
453 | # define EV_FREQUENT_CHECK do { } while (0) |
459 | #endif |
454 | #endif |
460 | |
455 | |
461 | /* |
456 | /* |
462 | * This is used to avoid floating point rounding problems. |
457 | * This is used to work around floating point rounding problems. |
463 | * It is added to ev_rt_now when scheduling periodics |
|
|
464 | * to ensure progress, time-wise, even when rounding |
|
|
465 | * errors are against us. |
|
|
466 | * This value is good at least till the year 4000. |
458 | * This value is good at least till the year 4000. |
467 | * Better solutions welcome. |
|
|
468 | */ |
459 | */ |
469 | #define TIME_EPSILON 0.0001220703125 /* 1/8192 */ |
460 | #define MIN_INTERVAL 0.0001220703125 /* 1/2**13, good till 4000 */ |
|
|
461 | /*#define MIN_INTERVAL 0.00000095367431640625 /* 1/2**20, good till 2200 */ |
470 | |
462 | |
471 | #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) */ |
472 | #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) */ |
473 | |
465 | |
474 | #define EV_TV_SET(tv,t) do { tv.tv_sec = (long)t; tv.tv_usec = (long)((t - tv.tv_sec) * 1e6); } while (0) |
466 | #define EV_TV_SET(tv,t) do { tv.tv_sec = (long)t; tv.tv_usec = (long)((t - tv.tv_sec) * 1e6); } while (0) |
… | |
… | |
537 | # include "ev_win32.c" |
529 | # include "ev_win32.c" |
538 | #endif |
530 | #endif |
539 | |
531 | |
540 | /*****************************************************************************/ |
532 | /*****************************************************************************/ |
541 | |
533 | |
|
|
534 | /* define a suitable floor function (only used by periodics atm) */ |
|
|
535 | |
|
|
536 | #if EV_USE_FLOOR |
|
|
537 | # include <math.h> |
|
|
538 | # define ev_floor(v) floor (v) |
|
|
539 | #else |
|
|
540 | |
|
|
541 | #include <float.h> |
|
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542 | |
|
|
543 | /* a floor() replacement function, should be independent of ev_tstamp type */ |
|
|
544 | static ev_tstamp noinline |
|
|
545 | ev_floor (ev_tstamp v) |
|
|
546 | { |
|
|
547 | /* the choice of shift factor is not terribly important */ |
|
|
548 | #if FLT_RADIX != 2 /* assume FLT_RADIX == 10 */ |
|
|
549 | const ev_tstamp shift = sizeof (unsigned long) >= 8 ? 10000000000000000000. : 1000000000.; |
|
|
550 | #else |
|
|
551 | const ev_tstamp shift = sizeof (unsigned long) >= 8 ? 18446744073709551616. : 4294967296.; |
|
|
552 | #endif |
|
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553 | |
|
|
554 | /* argument too large for an unsigned long? */ |
|
|
555 | if (expect_false (v >= shift)) |
|
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556 | { |
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557 | ev_tstamp f; |
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558 | |
|
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559 | if (v == v - 1.) |
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560 | return v; /* very large number */ |
|
|
561 | |
|
|
562 | f = shift * ev_floor (v * (1. / shift)); |
|
|
563 | return f + ev_floor (v - f); |
|
|
564 | } |
|
|
565 | |
|
|
566 | /* special treatment for negative args? */ |
|
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567 | if (expect_false (v < 0.)) |
|
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568 | { |
|
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569 | ev_tstamp f = -ev_floor (-v); |
|
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570 | |
|
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571 | return f - (f == v ? 0 : 1); |
|
|
572 | } |
|
|
573 | |
|
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574 | /* fits into an unsigned long */ |
|
|
575 | return (unsigned long)v; |
|
|
576 | } |
|
|
577 | |
|
|
578 | #endif |
|
|
579 | |
|
|
580 | /*****************************************************************************/ |
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|
581 | |
|
|
582 | #ifdef __linux |
|
|
583 | # include <sys/utsname.h> |
|
|
584 | #endif |
|
|
585 | |
|
|
586 | static unsigned int noinline |
|
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587 | ev_linux_version (void) |
|
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588 | { |
|
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589 | #ifdef __linux |
|
|
590 | unsigned int v = 0; |
|
|
591 | struct utsname buf; |
|
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592 | int i; |
|
|
593 | char *p = buf.release; |
|
|
594 | |
|
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595 | if (uname (&buf)) |
|
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596 | return 0; |
|
|
597 | |
|
|
598 | for (i = 3+1; --i; ) |
|
|
599 | { |
|
|
600 | unsigned int c = 0; |
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|
601 | |
|
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602 | for (;;) |
|
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603 | { |
|
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604 | if (*p >= '0' && *p <= '9') |
|
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605 | c = c * 10 + *p++ - '0'; |
|
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606 | else |
|
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607 | { |
|
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608 | p += *p == '.'; |
|
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609 | break; |
|
|
610 | } |
|
|
611 | } |
|
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612 | |
|
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613 | v = (v << 8) | c; |
|
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614 | } |
|
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615 | |
|
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616 | return v; |
|
|
617 | #else |
|
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618 | return 0; |
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|
619 | #endif |
|
|
620 | } |
|
|
621 | |
|
|
622 | /*****************************************************************************/ |
|
|
623 | |
542 | #if EV_AVOID_STDIO |
624 | #if EV_AVOID_STDIO |
543 | static void noinline |
625 | static void noinline |
544 | ev_printerr (const char *msg) |
626 | ev_printerr (const char *msg) |
545 | { |
627 | { |
546 | write (STDERR_FILENO, msg, strlen (msg)); |
628 | write (STDERR_FILENO, msg, strlen (msg)); |
… | |
… | |
564 | if (syserr_cb) |
646 | if (syserr_cb) |
565 | syserr_cb (msg); |
647 | syserr_cb (msg); |
566 | else |
648 | else |
567 | { |
649 | { |
568 | #if EV_AVOID_STDIO |
650 | #if EV_AVOID_STDIO |
569 | const char *err = strerror (errno); |
|
|
570 | |
|
|
571 | ev_printerr (msg); |
651 | ev_printerr (msg); |
572 | ev_printerr (": "); |
652 | ev_printerr (": "); |
573 | ev_printerr (err); |
653 | ev_printerr (strerror (errno)); |
574 | ev_printerr ("\n"); |
654 | ev_printerr ("\n"); |
575 | #else |
655 | #else |
576 | perror (msg); |
656 | perror (msg); |
577 | #endif |
657 | #endif |
578 | abort (); |
658 | abort (); |
… | |
… | |
612 | ptr = alloc (ptr, size); |
692 | ptr = alloc (ptr, size); |
613 | |
693 | |
614 | if (!ptr && size) |
694 | if (!ptr && size) |
615 | { |
695 | { |
616 | #if EV_AVOID_STDIO |
696 | #if EV_AVOID_STDIO |
617 | ev_printerr ("libev: memory allocation failed, aborting.\n"); |
697 | ev_printerr ("(libev) memory allocation failed, aborting.\n"); |
618 | #else |
698 | #else |
619 | fprintf (stderr, "libev: cannot allocate %ld bytes, aborting.", size); |
699 | fprintf (stderr, "(libev) cannot allocate %ld bytes, aborting.", size); |
620 | #endif |
700 | #endif |
621 | abort (); |
701 | abort (); |
622 | } |
702 | } |
623 | |
703 | |
624 | return ptr; |
704 | return ptr; |
… | |
… | |
641 | unsigned char emask; /* the epoll backend stores the actual kernel mask in here */ |
721 | unsigned char emask; /* the epoll backend stores the actual kernel mask in here */ |
642 | unsigned char unused; |
722 | unsigned char unused; |
643 | #if EV_USE_EPOLL |
723 | #if EV_USE_EPOLL |
644 | unsigned int egen; /* generation counter to counter epoll bugs */ |
724 | unsigned int egen; /* generation counter to counter epoll bugs */ |
645 | #endif |
725 | #endif |
646 | #if EV_SELECT_IS_WINSOCKET |
726 | #if EV_SELECT_IS_WINSOCKET || EV_USE_IOCP |
647 | SOCKET handle; |
727 | SOCKET handle; |
|
|
728 | #endif |
|
|
729 | #if EV_USE_IOCP |
|
|
730 | OVERLAPPED or, ow; |
648 | #endif |
731 | #endif |
649 | } ANFD; |
732 | } ANFD; |
650 | |
733 | |
651 | /* stores the pending event set for a given watcher */ |
734 | /* stores the pending event set for a given watcher */ |
652 | typedef struct |
735 | typedef struct |
… | |
… | |
717 | # define EV_RELEASE_CB (void)0 |
800 | # define EV_RELEASE_CB (void)0 |
718 | # define EV_ACQUIRE_CB (void)0 |
801 | # define EV_ACQUIRE_CB (void)0 |
719 | # define EV_INVOKE_PENDING ev_invoke_pending (EV_A) |
802 | # define EV_INVOKE_PENDING ev_invoke_pending (EV_A) |
720 | #endif |
803 | #endif |
721 | |
804 | |
722 | #define EVUNLOOP_RECURSE 0x80 |
805 | #define EVBREAK_RECURSE 0x80 |
723 | |
806 | |
724 | /*****************************************************************************/ |
807 | /*****************************************************************************/ |
725 | |
808 | |
726 | #ifndef EV_HAVE_EV_TIME |
809 | #ifndef EV_HAVE_EV_TIME |
727 | ev_tstamp |
810 | ev_tstamp |
… | |
… | |
785 | /* by older ones */ |
868 | /* by older ones */ |
786 | EV_TV_SET (tv, delay); |
869 | EV_TV_SET (tv, delay); |
787 | select (0, 0, 0, 0, &tv); |
870 | select (0, 0, 0, 0, &tv); |
788 | #endif |
871 | #endif |
789 | } |
872 | } |
|
|
873 | } |
|
|
874 | |
|
|
875 | inline_speed int |
|
|
876 | ev_timeout_to_ms (ev_tstamp timeout) |
|
|
877 | { |
|
|
878 | int ms = timeout * 1000. + .999999; |
|
|
879 | |
|
|
880 | return expect_true (ms) ? ms : timeout < 1e-6 ? 0 : 1; |
790 | } |
881 | } |
791 | |
882 | |
792 | /*****************************************************************************/ |
883 | /*****************************************************************************/ |
793 | |
884 | |
794 | #define MALLOC_ROUND 4096 /* prefer to allocate in chunks of this size, must be 2**n and >> 4 longs */ |
885 | #define MALLOC_ROUND 4096 /* prefer to allocate in chunks of this size, must be 2**n and >> 4 longs */ |
… | |
… | |
937 | inline_size void |
1028 | inline_size void |
938 | fd_reify (EV_P) |
1029 | fd_reify (EV_P) |
939 | { |
1030 | { |
940 | int i; |
1031 | int i; |
941 | |
1032 | |
|
|
1033 | #if EV_SELECT_IS_WINSOCKET || EV_USE_IOCP |
|
|
1034 | for (i = 0; i < fdchangecnt; ++i) |
|
|
1035 | { |
|
|
1036 | int fd = fdchanges [i]; |
|
|
1037 | ANFD *anfd = anfds + fd; |
|
|
1038 | |
|
|
1039 | if (anfd->reify & EV__IOFDSET) |
|
|
1040 | { |
|
|
1041 | SOCKET handle = EV_FD_TO_WIN32_HANDLE (fd); |
|
|
1042 | |
|
|
1043 | if (handle != anfd->handle) |
|
|
1044 | { |
|
|
1045 | unsigned long arg; |
|
|
1046 | |
|
|
1047 | assert (("libev: only socket fds supported in this configuration", ioctlsocket (handle, FIONREAD, &arg) == 0)); |
|
|
1048 | |
|
|
1049 | /* handle changed, but fd didn't - we need to do it in two steps */ |
|
|
1050 | backend_modify (EV_A_ fd, anfd->events, 0); |
|
|
1051 | anfd->events = 0; |
|
|
1052 | anfd->handle = handle; |
|
|
1053 | } |
|
|
1054 | } |
|
|
1055 | } |
|
|
1056 | #endif |
|
|
1057 | |
942 | for (i = 0; i < fdchangecnt; ++i) |
1058 | for (i = 0; i < fdchangecnt; ++i) |
943 | { |
1059 | { |
944 | int fd = fdchanges [i]; |
1060 | int fd = fdchanges [i]; |
945 | ANFD *anfd = anfds + fd; |
1061 | ANFD *anfd = anfds + fd; |
946 | ev_io *w; |
1062 | ev_io *w; |
947 | |
1063 | |
948 | unsigned char events = 0; |
1064 | unsigned char o_events = anfd->events; |
|
|
1065 | unsigned char o_reify = anfd->reify; |
949 | |
1066 | |
950 | for (w = (ev_io *)anfd->head; w; w = (ev_io *)((WL)w)->next) |
1067 | anfd->reify = 0; |
951 | events |= (unsigned char)w->events; |
|
|
952 | |
1068 | |
953 | #if EV_SELECT_IS_WINSOCKET |
1069 | /*if (expect_true (o_reify & EV_ANFD_REIFY)) probably a deoptimisation */ |
954 | if (events) |
|
|
955 | { |
1070 | { |
956 | unsigned long arg; |
1071 | anfd->events = 0; |
957 | anfd->handle = EV_FD_TO_WIN32_HANDLE (fd); |
1072 | |
958 | assert (("libev: only socket fds supported in this configuration", ioctlsocket (anfd->handle, FIONREAD, &arg) == 0)); |
1073 | for (w = (ev_io *)anfd->head; w; w = (ev_io *)((WL)w)->next) |
|
|
1074 | anfd->events |= (unsigned char)w->events; |
|
|
1075 | |
|
|
1076 | if (o_events != anfd->events) |
|
|
1077 | o_reify = EV__IOFDSET; /* actually |= */ |
959 | } |
1078 | } |
960 | #endif |
|
|
961 | |
1079 | |
962 | { |
1080 | if (o_reify & EV__IOFDSET) |
963 | unsigned char o_events = anfd->events; |
|
|
964 | unsigned char o_reify = anfd->reify; |
|
|
965 | |
|
|
966 | anfd->reify = 0; |
|
|
967 | anfd->events = events; |
|
|
968 | |
|
|
969 | if (o_events != events || o_reify & EV__IOFDSET) |
|
|
970 | backend_modify (EV_A_ fd, o_events, events); |
1081 | backend_modify (EV_A_ fd, o_events, anfd->events); |
971 | } |
|
|
972 | } |
1082 | } |
973 | |
1083 | |
974 | fdchangecnt = 0; |
1084 | fdchangecnt = 0; |
975 | } |
1085 | } |
976 | |
1086 | |
… | |
… | |
1311 | char dummy; |
1421 | char dummy; |
1312 | /* see discussion in evpipe_write when you think this read should be recv in win32 */ |
1422 | /* see discussion in evpipe_write when you think this read should be recv in win32 */ |
1313 | read (evpipe [0], &dummy, 1); |
1423 | read (evpipe [0], &dummy, 1); |
1314 | } |
1424 | } |
1315 | |
1425 | |
|
|
1426 | #if EV_SIGNAL_ENABLE |
1316 | if (sig_pending) |
1427 | if (sig_pending) |
1317 | { |
1428 | { |
1318 | sig_pending = 0; |
1429 | sig_pending = 0; |
1319 | |
1430 | |
1320 | for (i = EV_NSIG - 1; i--; ) |
1431 | for (i = EV_NSIG - 1; i--; ) |
1321 | if (expect_false (signals [i].pending)) |
1432 | if (expect_false (signals [i].pending)) |
1322 | ev_feed_signal_event (EV_A_ i + 1); |
1433 | ev_feed_signal_event (EV_A_ i + 1); |
1323 | } |
1434 | } |
|
|
1435 | #endif |
1324 | |
1436 | |
1325 | #if EV_ASYNC_ENABLE |
1437 | #if EV_ASYNC_ENABLE |
1326 | if (async_pending) |
1438 | if (async_pending) |
1327 | { |
1439 | { |
1328 | async_pending = 0; |
1440 | async_pending = 0; |
… | |
… | |
1337 | #endif |
1449 | #endif |
1338 | } |
1450 | } |
1339 | |
1451 | |
1340 | /*****************************************************************************/ |
1452 | /*****************************************************************************/ |
1341 | |
1453 | |
|
|
1454 | void |
|
|
1455 | ev_feed_signal (int signum) |
|
|
1456 | { |
|
|
1457 | #if EV_MULTIPLICITY |
|
|
1458 | EV_P = signals [signum - 1].loop; |
|
|
1459 | |
|
|
1460 | if (!EV_A) |
|
|
1461 | return; |
|
|
1462 | #endif |
|
|
1463 | |
|
|
1464 | signals [signum - 1].pending = 1; |
|
|
1465 | evpipe_write (EV_A_ &sig_pending); |
|
|
1466 | } |
|
|
1467 | |
1342 | static void |
1468 | static void |
1343 | ev_sighandler (int signum) |
1469 | ev_sighandler (int signum) |
1344 | { |
1470 | { |
1345 | #if EV_MULTIPLICITY |
|
|
1346 | EV_P = signals [signum - 1].loop; |
|
|
1347 | #endif |
|
|
1348 | |
|
|
1349 | #ifdef _WIN32 |
1471 | #ifdef _WIN32 |
1350 | signal (signum, ev_sighandler); |
1472 | signal (signum, ev_sighandler); |
1351 | #endif |
1473 | #endif |
1352 | |
1474 | |
1353 | signals [signum - 1].pending = 1; |
1475 | ev_feed_signal (signum); |
1354 | evpipe_write (EV_A_ &sig_pending); |
|
|
1355 | } |
1476 | } |
1356 | |
1477 | |
1357 | void noinline |
1478 | void noinline |
1358 | ev_feed_signal_event (EV_P_ int signum) |
1479 | ev_feed_signal_event (EV_P_ int signum) |
1359 | { |
1480 | { |
… | |
… | |
1459 | |
1580 | |
1460 | #endif |
1581 | #endif |
1461 | |
1582 | |
1462 | /*****************************************************************************/ |
1583 | /*****************************************************************************/ |
1463 | |
1584 | |
|
|
1585 | #if EV_USE_IOCP |
|
|
1586 | # include "ev_iocp.c" |
|
|
1587 | #endif |
1464 | #if EV_USE_PORT |
1588 | #if EV_USE_PORT |
1465 | # include "ev_port.c" |
1589 | # include "ev_port.c" |
1466 | #endif |
1590 | #endif |
1467 | #if EV_USE_KQUEUE |
1591 | #if EV_USE_KQUEUE |
1468 | # include "ev_kqueue.c" |
1592 | # include "ev_kqueue.c" |
… | |
… | |
1541 | ev_embeddable_backends (void) |
1665 | ev_embeddable_backends (void) |
1542 | { |
1666 | { |
1543 | int flags = EVBACKEND_EPOLL | EVBACKEND_KQUEUE | EVBACKEND_PORT; |
1667 | int flags = EVBACKEND_EPOLL | EVBACKEND_KQUEUE | EVBACKEND_PORT; |
1544 | |
1668 | |
1545 | /* epoll embeddability broken on all linux versions up to at least 2.6.23 */ |
1669 | /* epoll embeddability broken on all linux versions up to at least 2.6.23 */ |
1546 | /* please fix it and tell me how to detect the fix */ |
1670 | if (ev_linux_version () < 0x020620) /* disable it on linux < 2.6.32 */ |
1547 | flags &= ~EVBACKEND_EPOLL; |
1671 | flags &= ~EVBACKEND_EPOLL; |
1548 | |
1672 | |
1549 | return flags; |
1673 | return flags; |
1550 | } |
1674 | } |
1551 | |
1675 | |
1552 | unsigned int |
1676 | unsigned int |
… | |
… | |
1608 | static void noinline |
1732 | static void noinline |
1609 | loop_init (EV_P_ unsigned int flags) |
1733 | loop_init (EV_P_ unsigned int flags) |
1610 | { |
1734 | { |
1611 | if (!backend) |
1735 | if (!backend) |
1612 | { |
1736 | { |
|
|
1737 | origflags = flags; |
|
|
1738 | |
1613 | #if EV_USE_REALTIME |
1739 | #if EV_USE_REALTIME |
1614 | if (!have_realtime) |
1740 | if (!have_realtime) |
1615 | { |
1741 | { |
1616 | struct timespec ts; |
1742 | struct timespec ts; |
1617 | |
1743 | |
… | |
… | |
1662 | #endif |
1788 | #endif |
1663 | #if EV_USE_SIGNALFD |
1789 | #if EV_USE_SIGNALFD |
1664 | sigfd = flags & EVFLAG_SIGNALFD ? -2 : -1; |
1790 | sigfd = flags & EVFLAG_SIGNALFD ? -2 : -1; |
1665 | #endif |
1791 | #endif |
1666 | |
1792 | |
1667 | if (!(flags & 0x0000ffffU)) |
1793 | if (!(flags & EVBACKEND_MASK)) |
1668 | flags |= ev_recommended_backends (); |
1794 | flags |= ev_recommended_backends (); |
1669 | |
1795 | |
|
|
1796 | #if EV_USE_IOCP |
|
|
1797 | if (!backend && (flags & EVBACKEND_IOCP )) backend = iocp_init (EV_A_ flags); |
|
|
1798 | #endif |
1670 | #if EV_USE_PORT |
1799 | #if EV_USE_PORT |
1671 | if (!backend && (flags & EVBACKEND_PORT )) backend = port_init (EV_A_ flags); |
1800 | if (!backend && (flags & EVBACKEND_PORT )) backend = port_init (EV_A_ flags); |
1672 | #endif |
1801 | #endif |
1673 | #if EV_USE_KQUEUE |
1802 | #if EV_USE_KQUEUE |
1674 | if (!backend && (flags & EVBACKEND_KQUEUE)) backend = kqueue_init (EV_A_ flags); |
1803 | if (!backend && (flags & EVBACKEND_KQUEUE)) backend = kqueue_init (EV_A_ flags); |
… | |
… | |
1691 | #endif |
1820 | #endif |
1692 | } |
1821 | } |
1693 | } |
1822 | } |
1694 | |
1823 | |
1695 | /* free up a loop structure */ |
1824 | /* free up a loop structure */ |
1696 | static void noinline |
1825 | void |
1697 | loop_destroy (EV_P) |
1826 | ev_loop_destroy (EV_P) |
1698 | { |
1827 | { |
1699 | int i; |
1828 | int i; |
|
|
1829 | |
|
|
1830 | #if EV_MULTIPLICITY |
|
|
1831 | /* mimic free (0) */ |
|
|
1832 | if (!EV_A) |
|
|
1833 | return; |
|
|
1834 | #endif |
|
|
1835 | |
|
|
1836 | #if EV_CLEANUP_ENABLE |
|
|
1837 | /* queue cleanup watchers (and execute them) */ |
|
|
1838 | if (expect_false (cleanupcnt)) |
|
|
1839 | { |
|
|
1840 | queue_events (EV_A_ (W *)cleanups, cleanupcnt, EV_CLEANUP); |
|
|
1841 | EV_INVOKE_PENDING; |
|
|
1842 | } |
|
|
1843 | #endif |
|
|
1844 | |
|
|
1845 | #if EV_CHILD_ENABLE |
|
|
1846 | if (ev_is_active (&childev)) |
|
|
1847 | { |
|
|
1848 | ev_ref (EV_A); /* child watcher */ |
|
|
1849 | ev_signal_stop (EV_A_ &childev); |
|
|
1850 | } |
|
|
1851 | #endif |
1700 | |
1852 | |
1701 | if (ev_is_active (&pipe_w)) |
1853 | if (ev_is_active (&pipe_w)) |
1702 | { |
1854 | { |
1703 | /*ev_ref (EV_A);*/ |
1855 | /*ev_ref (EV_A);*/ |
1704 | /*ev_io_stop (EV_A_ &pipe_w);*/ |
1856 | /*ev_io_stop (EV_A_ &pipe_w);*/ |
… | |
… | |
1726 | #endif |
1878 | #endif |
1727 | |
1879 | |
1728 | if (backend_fd >= 0) |
1880 | if (backend_fd >= 0) |
1729 | close (backend_fd); |
1881 | close (backend_fd); |
1730 | |
1882 | |
|
|
1883 | #if EV_USE_IOCP |
|
|
1884 | if (backend == EVBACKEND_IOCP ) iocp_destroy (EV_A); |
|
|
1885 | #endif |
1731 | #if EV_USE_PORT |
1886 | #if EV_USE_PORT |
1732 | if (backend == EVBACKEND_PORT ) port_destroy (EV_A); |
1887 | if (backend == EVBACKEND_PORT ) port_destroy (EV_A); |
1733 | #endif |
1888 | #endif |
1734 | #if EV_USE_KQUEUE |
1889 | #if EV_USE_KQUEUE |
1735 | if (backend == EVBACKEND_KQUEUE) kqueue_destroy (EV_A); |
1890 | if (backend == EVBACKEND_KQUEUE) kqueue_destroy (EV_A); |
… | |
… | |
1762 | array_free (periodic, EMPTY); |
1917 | array_free (periodic, EMPTY); |
1763 | #endif |
1918 | #endif |
1764 | #if EV_FORK_ENABLE |
1919 | #if EV_FORK_ENABLE |
1765 | array_free (fork, EMPTY); |
1920 | array_free (fork, EMPTY); |
1766 | #endif |
1921 | #endif |
|
|
1922 | #if EV_CLEANUP_ENABLE |
|
|
1923 | array_free (cleanup, EMPTY); |
|
|
1924 | #endif |
1767 | array_free (prepare, EMPTY); |
1925 | array_free (prepare, EMPTY); |
1768 | array_free (check, EMPTY); |
1926 | array_free (check, EMPTY); |
1769 | #if EV_ASYNC_ENABLE |
1927 | #if EV_ASYNC_ENABLE |
1770 | array_free (async, EMPTY); |
1928 | array_free (async, EMPTY); |
1771 | #endif |
1929 | #endif |
1772 | |
1930 | |
1773 | backend = 0; |
1931 | backend = 0; |
|
|
1932 | |
|
|
1933 | #if EV_MULTIPLICITY |
|
|
1934 | if (ev_is_default_loop (EV_A)) |
|
|
1935 | #endif |
|
|
1936 | ev_default_loop_ptr = 0; |
|
|
1937 | #if EV_MULTIPLICITY |
|
|
1938 | else |
|
|
1939 | ev_free (EV_A); |
|
|
1940 | #endif |
1774 | } |
1941 | } |
1775 | |
1942 | |
1776 | #if EV_USE_INOTIFY |
1943 | #if EV_USE_INOTIFY |
1777 | inline_size void infy_fork (EV_P); |
1944 | inline_size void infy_fork (EV_P); |
1778 | #endif |
1945 | #endif |
… | |
… | |
1837 | loop_init (EV_A_ flags); |
2004 | loop_init (EV_A_ flags); |
1838 | |
2005 | |
1839 | if (ev_backend (EV_A)) |
2006 | if (ev_backend (EV_A)) |
1840 | return EV_A; |
2007 | return EV_A; |
1841 | |
2008 | |
|
|
2009 | ev_free (EV_A); |
1842 | return 0; |
2010 | return 0; |
1843 | } |
2011 | } |
1844 | |
2012 | |
1845 | void |
|
|
1846 | ev_loop_destroy (EV_P) |
|
|
1847 | { |
|
|
1848 | loop_destroy (EV_A); |
|
|
1849 | ev_free (loop); |
|
|
1850 | } |
|
|
1851 | |
|
|
1852 | void |
|
|
1853 | ev_loop_fork (EV_P) |
|
|
1854 | { |
|
|
1855 | postfork = 1; /* must be in line with ev_default_fork */ |
|
|
1856 | } |
|
|
1857 | #endif /* multiplicity */ |
2013 | #endif /* multiplicity */ |
1858 | |
2014 | |
1859 | #if EV_VERIFY |
2015 | #if EV_VERIFY |
1860 | static void noinline |
2016 | static void noinline |
1861 | verify_watcher (EV_P_ W w) |
2017 | verify_watcher (EV_P_ W w) |
… | |
… | |
1936 | #if EV_FORK_ENABLE |
2092 | #if EV_FORK_ENABLE |
1937 | assert (forkmax >= forkcnt); |
2093 | assert (forkmax >= forkcnt); |
1938 | array_verify (EV_A_ (W *)forks, forkcnt); |
2094 | array_verify (EV_A_ (W *)forks, forkcnt); |
1939 | #endif |
2095 | #endif |
1940 | |
2096 | |
|
|
2097 | #if EV_CLEANUP_ENABLE |
|
|
2098 | assert (cleanupmax >= cleanupcnt); |
|
|
2099 | array_verify (EV_A_ (W *)cleanups, cleanupcnt); |
|
|
2100 | #endif |
|
|
2101 | |
1941 | #if EV_ASYNC_ENABLE |
2102 | #if EV_ASYNC_ENABLE |
1942 | assert (asyncmax >= asynccnt); |
2103 | assert (asyncmax >= asynccnt); |
1943 | array_verify (EV_A_ (W *)asyncs, asynccnt); |
2104 | array_verify (EV_A_ (W *)asyncs, asynccnt); |
1944 | #endif |
2105 | #endif |
1945 | |
2106 | |
… | |
… | |
1963 | } |
2124 | } |
1964 | #endif |
2125 | #endif |
1965 | |
2126 | |
1966 | #if EV_MULTIPLICITY |
2127 | #if EV_MULTIPLICITY |
1967 | struct ev_loop * |
2128 | struct ev_loop * |
1968 | ev_default_loop_init (unsigned int flags) |
|
|
1969 | #else |
2129 | #else |
1970 | int |
2130 | int |
|
|
2131 | #endif |
1971 | ev_default_loop (unsigned int flags) |
2132 | ev_default_loop (unsigned int flags) |
1972 | #endif |
|
|
1973 | { |
2133 | { |
1974 | if (!ev_default_loop_ptr) |
2134 | if (!ev_default_loop_ptr) |
1975 | { |
2135 | { |
1976 | #if EV_MULTIPLICITY |
2136 | #if EV_MULTIPLICITY |
1977 | EV_P = ev_default_loop_ptr = &default_loop_struct; |
2137 | EV_P = ev_default_loop_ptr = &default_loop_struct; |
… | |
… | |
1996 | |
2156 | |
1997 | return ev_default_loop_ptr; |
2157 | return ev_default_loop_ptr; |
1998 | } |
2158 | } |
1999 | |
2159 | |
2000 | void |
2160 | void |
2001 | ev_default_destroy (void) |
2161 | ev_loop_fork (EV_P) |
2002 | { |
2162 | { |
2003 | #if EV_MULTIPLICITY |
|
|
2004 | EV_P = ev_default_loop_ptr; |
|
|
2005 | #endif |
|
|
2006 | |
|
|
2007 | ev_default_loop_ptr = 0; |
|
|
2008 | |
|
|
2009 | #if EV_CHILD_ENABLE |
|
|
2010 | ev_ref (EV_A); /* child watcher */ |
|
|
2011 | ev_signal_stop (EV_A_ &childev); |
|
|
2012 | #endif |
|
|
2013 | |
|
|
2014 | loop_destroy (EV_A); |
|
|
2015 | } |
|
|
2016 | |
|
|
2017 | void |
|
|
2018 | ev_default_fork (void) |
|
|
2019 | { |
|
|
2020 | #if EV_MULTIPLICITY |
|
|
2021 | EV_P = ev_default_loop_ptr; |
|
|
2022 | #endif |
|
|
2023 | |
|
|
2024 | postfork = 1; /* must be in line with ev_loop_fork */ |
2163 | postfork = 1; /* must be in line with ev_default_fork */ |
2025 | } |
2164 | } |
2026 | |
2165 | |
2027 | /*****************************************************************************/ |
2166 | /*****************************************************************************/ |
2028 | |
2167 | |
2029 | void |
2168 | void |
… | |
… | |
2051 | |
2190 | |
2052 | for (pri = NUMPRI; pri--; ) |
2191 | for (pri = NUMPRI; pri--; ) |
2053 | while (pendingcnt [pri]) |
2192 | while (pendingcnt [pri]) |
2054 | { |
2193 | { |
2055 | ANPENDING *p = pendings [pri] + --pendingcnt [pri]; |
2194 | ANPENDING *p = pendings [pri] + --pendingcnt [pri]; |
2056 | |
|
|
2057 | /*assert (("libev: non-pending watcher on pending list", p->w->pending));*/ |
|
|
2058 | /* ^ this is no longer true, as pending_w could be here */ |
|
|
2059 | |
2195 | |
2060 | p->w->pending = 0; |
2196 | p->w->pending = 0; |
2061 | EV_CB_INVOKE (p->w, p->events); |
2197 | EV_CB_INVOKE (p->w, p->events); |
2062 | EV_FREQUENT_CHECK; |
2198 | EV_FREQUENT_CHECK; |
2063 | } |
2199 | } |
… | |
… | |
2125 | feed_reverse_done (EV_A_ EV_TIMER); |
2261 | feed_reverse_done (EV_A_ EV_TIMER); |
2126 | } |
2262 | } |
2127 | } |
2263 | } |
2128 | |
2264 | |
2129 | #if EV_PERIODIC_ENABLE |
2265 | #if EV_PERIODIC_ENABLE |
|
|
2266 | |
|
|
2267 | static void noinline |
|
|
2268 | periodic_recalc (EV_P_ ev_periodic *w) |
|
|
2269 | { |
|
|
2270 | ev_tstamp interval = w->interval > MIN_INTERVAL ? w->interval : MIN_INTERVAL; |
|
|
2271 | ev_tstamp at = w->offset + interval * ev_floor ((ev_rt_now - w->offset) / interval); |
|
|
2272 | |
|
|
2273 | /* the above almost always errs on the low side */ |
|
|
2274 | while (at <= ev_rt_now) |
|
|
2275 | { |
|
|
2276 | ev_tstamp nat = at + w->interval; |
|
|
2277 | |
|
|
2278 | /* when resolution fails us, we use ev_rt_now */ |
|
|
2279 | if (expect_false (nat == at)) |
|
|
2280 | { |
|
|
2281 | at = ev_rt_now; |
|
|
2282 | break; |
|
|
2283 | } |
|
|
2284 | |
|
|
2285 | at = nat; |
|
|
2286 | } |
|
|
2287 | |
|
|
2288 | ev_at (w) = at; |
|
|
2289 | } |
|
|
2290 | |
2130 | /* make periodics pending */ |
2291 | /* make periodics pending */ |
2131 | inline_size void |
2292 | inline_size void |
2132 | periodics_reify (EV_P) |
2293 | periodics_reify (EV_P) |
2133 | { |
2294 | { |
2134 | EV_FREQUENT_CHECK; |
2295 | EV_FREQUENT_CHECK; |
… | |
… | |
2153 | ANHE_at_cache (periodics [HEAP0]); |
2314 | ANHE_at_cache (periodics [HEAP0]); |
2154 | downheap (periodics, periodiccnt, HEAP0); |
2315 | downheap (periodics, periodiccnt, HEAP0); |
2155 | } |
2316 | } |
2156 | else if (w->interval) |
2317 | else if (w->interval) |
2157 | { |
2318 | { |
2158 | ev_at (w) = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval; |
2319 | periodic_recalc (EV_A_ w); |
2159 | /* if next trigger time is not sufficiently in the future, put it there */ |
|
|
2160 | /* this might happen because of floating point inexactness */ |
|
|
2161 | if (ev_at (w) - ev_rt_now < TIME_EPSILON) |
|
|
2162 | { |
|
|
2163 | ev_at (w) += w->interval; |
|
|
2164 | |
|
|
2165 | /* if interval is unreasonably low we might still have a time in the past */ |
|
|
2166 | /* so correct this. this will make the periodic very inexact, but the user */ |
|
|
2167 | /* has effectively asked to get triggered more often than possible */ |
|
|
2168 | if (ev_at (w) < ev_rt_now) |
|
|
2169 | ev_at (w) = ev_rt_now; |
|
|
2170 | } |
|
|
2171 | |
|
|
2172 | ANHE_at_cache (periodics [HEAP0]); |
2320 | ANHE_at_cache (periodics [HEAP0]); |
2173 | downheap (periodics, periodiccnt, HEAP0); |
2321 | downheap (periodics, periodiccnt, HEAP0); |
2174 | } |
2322 | } |
2175 | else |
2323 | else |
2176 | ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */ |
2324 | ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */ |
… | |
… | |
2197 | ev_periodic *w = (ev_periodic *)ANHE_w (periodics [i]); |
2345 | ev_periodic *w = (ev_periodic *)ANHE_w (periodics [i]); |
2198 | |
2346 | |
2199 | if (w->reschedule_cb) |
2347 | if (w->reschedule_cb) |
2200 | ev_at (w) = w->reschedule_cb (w, ev_rt_now); |
2348 | ev_at (w) = w->reschedule_cb (w, ev_rt_now); |
2201 | else if (w->interval) |
2349 | else if (w->interval) |
2202 | ev_at (w) = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval; |
2350 | periodic_recalc (EV_A_ w); |
2203 | |
2351 | |
2204 | ANHE_at_cache (periodics [i]); |
2352 | ANHE_at_cache (periodics [i]); |
2205 | } |
2353 | } |
2206 | |
2354 | |
2207 | reheap (periodics, periodiccnt); |
2355 | reheap (periodics, periodiccnt); |
… | |
… | |
2254 | * doesn't hurt either as we only do this on time-jumps or |
2402 | * doesn't hurt either as we only do this on time-jumps or |
2255 | * in the unlikely event of having been preempted here. |
2403 | * in the unlikely event of having been preempted here. |
2256 | */ |
2404 | */ |
2257 | for (i = 4; --i; ) |
2405 | for (i = 4; --i; ) |
2258 | { |
2406 | { |
|
|
2407 | ev_tstamp diff; |
2259 | rtmn_diff = ev_rt_now - mn_now; |
2408 | rtmn_diff = ev_rt_now - mn_now; |
2260 | |
2409 | |
|
|
2410 | diff = odiff - rtmn_diff; |
|
|
2411 | |
2261 | if (expect_true (fabs (odiff - rtmn_diff) < MIN_TIMEJUMP)) |
2412 | if (expect_true ((diff < 0. ? -diff : diff) < MIN_TIMEJUMP)) |
2262 | return; /* all is well */ |
2413 | return; /* all is well */ |
2263 | |
2414 | |
2264 | ev_rt_now = ev_time (); |
2415 | ev_rt_now = ev_time (); |
2265 | mn_now = get_clock (); |
2416 | mn_now = get_clock (); |
2266 | now_floor = mn_now; |
2417 | now_floor = mn_now; |
… | |
… | |
2289 | mn_now = ev_rt_now; |
2440 | mn_now = ev_rt_now; |
2290 | } |
2441 | } |
2291 | } |
2442 | } |
2292 | |
2443 | |
2293 | void |
2444 | void |
2294 | ev_loop (EV_P_ int flags) |
2445 | ev_run (EV_P_ int flags) |
2295 | { |
2446 | { |
2296 | #if EV_FEATURE_API |
2447 | #if EV_FEATURE_API |
2297 | ++loop_depth; |
2448 | ++loop_depth; |
2298 | #endif |
2449 | #endif |
2299 | |
2450 | |
2300 | assert (("libev: ev_loop recursion during release detected", loop_done != EVUNLOOP_RECURSE)); |
2451 | assert (("libev: ev_loop recursion during release detected", loop_done != EVBREAK_RECURSE)); |
2301 | |
2452 | |
2302 | loop_done = EVUNLOOP_CANCEL; |
2453 | loop_done = EVBREAK_CANCEL; |
2303 | |
2454 | |
2304 | EV_INVOKE_PENDING; /* in case we recurse, ensure ordering stays nice and clean */ |
2455 | EV_INVOKE_PENDING; /* in case we recurse, ensure ordering stays nice and clean */ |
2305 | |
2456 | |
2306 | do |
2457 | do |
2307 | { |
2458 | { |
… | |
… | |
2350 | /* calculate blocking time */ |
2501 | /* calculate blocking time */ |
2351 | { |
2502 | { |
2352 | ev_tstamp waittime = 0.; |
2503 | ev_tstamp waittime = 0.; |
2353 | ev_tstamp sleeptime = 0.; |
2504 | ev_tstamp sleeptime = 0.; |
2354 | |
2505 | |
|
|
2506 | /* remember old timestamp for io_blocktime calculation */ |
|
|
2507 | ev_tstamp prev_mn_now = mn_now; |
|
|
2508 | |
|
|
2509 | /* update time to cancel out callback processing overhead */ |
|
|
2510 | time_update (EV_A_ 1e100); |
|
|
2511 | |
2355 | if (expect_true (!(flags & EVLOOP_NONBLOCK || idleall || !activecnt))) |
2512 | if (expect_true (!(flags & EVRUN_NOWAIT || idleall || !activecnt))) |
2356 | { |
2513 | { |
2357 | /* remember old timestamp for io_blocktime calculation */ |
|
|
2358 | ev_tstamp prev_mn_now = mn_now; |
|
|
2359 | |
|
|
2360 | /* update time to cancel out callback processing overhead */ |
|
|
2361 | time_update (EV_A_ 1e100); |
|
|
2362 | |
|
|
2363 | waittime = MAX_BLOCKTIME; |
2514 | waittime = MAX_BLOCKTIME; |
2364 | |
2515 | |
2365 | if (timercnt) |
2516 | if (timercnt) |
2366 | { |
2517 | { |
2367 | ev_tstamp to = ANHE_at (timers [HEAP0]) - mn_now + backend_fudge; |
2518 | ev_tstamp to = ANHE_at (timers [HEAP0]) - mn_now + backend_fudge; |
… | |
… | |
2397 | } |
2548 | } |
2398 | |
2549 | |
2399 | #if EV_FEATURE_API |
2550 | #if EV_FEATURE_API |
2400 | ++loop_count; |
2551 | ++loop_count; |
2401 | #endif |
2552 | #endif |
2402 | assert ((loop_done = EVUNLOOP_RECURSE, 1)); /* assert for side effect */ |
2553 | assert ((loop_done = EVBREAK_RECURSE, 1)); /* assert for side effect */ |
2403 | backend_poll (EV_A_ waittime); |
2554 | backend_poll (EV_A_ waittime); |
2404 | assert ((loop_done = EVUNLOOP_CANCEL, 1)); /* assert for side effect */ |
2555 | assert ((loop_done = EVBREAK_CANCEL, 1)); /* assert for side effect */ |
2405 | |
2556 | |
2406 | /* update ev_rt_now, do magic */ |
2557 | /* update ev_rt_now, do magic */ |
2407 | time_update (EV_A_ waittime + sleeptime); |
2558 | time_update (EV_A_ waittime + sleeptime); |
2408 | } |
2559 | } |
2409 | |
2560 | |
… | |
… | |
2427 | EV_INVOKE_PENDING; |
2578 | EV_INVOKE_PENDING; |
2428 | } |
2579 | } |
2429 | while (expect_true ( |
2580 | while (expect_true ( |
2430 | activecnt |
2581 | activecnt |
2431 | && !loop_done |
2582 | && !loop_done |
2432 | && !(flags & (EVLOOP_ONESHOT | EVLOOP_NONBLOCK)) |
2583 | && !(flags & (EVRUN_ONCE | EVRUN_NOWAIT)) |
2433 | )); |
2584 | )); |
2434 | |
2585 | |
2435 | if (loop_done == EVUNLOOP_ONE) |
2586 | if (loop_done == EVBREAK_ONE) |
2436 | loop_done = EVUNLOOP_CANCEL; |
2587 | loop_done = EVBREAK_CANCEL; |
2437 | |
2588 | |
2438 | #if EV_FEATURE_API |
2589 | #if EV_FEATURE_API |
2439 | --loop_depth; |
2590 | --loop_depth; |
2440 | #endif |
2591 | #endif |
2441 | } |
2592 | } |
2442 | |
2593 | |
2443 | void |
2594 | void |
2444 | ev_unloop (EV_P_ int how) |
2595 | ev_break (EV_P_ int how) |
2445 | { |
2596 | { |
2446 | loop_done = how; |
2597 | loop_done = how; |
2447 | } |
2598 | } |
2448 | |
2599 | |
2449 | void |
2600 | void |
… | |
… | |
2597 | EV_FREQUENT_CHECK; |
2748 | EV_FREQUENT_CHECK; |
2598 | |
2749 | |
2599 | wlist_del (&anfds[w->fd].head, (WL)w); |
2750 | wlist_del (&anfds[w->fd].head, (WL)w); |
2600 | ev_stop (EV_A_ (W)w); |
2751 | ev_stop (EV_A_ (W)w); |
2601 | |
2752 | |
2602 | fd_change (EV_A_ w->fd, 1); |
2753 | fd_change (EV_A_ w->fd, EV_ANFD_REIFY); |
2603 | |
2754 | |
2604 | EV_FREQUENT_CHECK; |
2755 | EV_FREQUENT_CHECK; |
2605 | } |
2756 | } |
2606 | |
2757 | |
2607 | void noinline |
2758 | void noinline |
… | |
… | |
2699 | if (w->reschedule_cb) |
2850 | if (w->reschedule_cb) |
2700 | ev_at (w) = w->reschedule_cb (w, ev_rt_now); |
2851 | ev_at (w) = w->reschedule_cb (w, ev_rt_now); |
2701 | else if (w->interval) |
2852 | else if (w->interval) |
2702 | { |
2853 | { |
2703 | assert (("libev: ev_periodic_start called with negative interval value", w->interval >= 0.)); |
2854 | assert (("libev: ev_periodic_start called with negative interval value", w->interval >= 0.)); |
2704 | /* this formula differs from the one in periodic_reify because we do not always round up */ |
2855 | periodic_recalc (EV_A_ w); |
2705 | ev_at (w) = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval; |
|
|
2706 | } |
2856 | } |
2707 | else |
2857 | else |
2708 | ev_at (w) = w->offset; |
2858 | ev_at (w) = w->offset; |
2709 | |
2859 | |
2710 | EV_FREQUENT_CHECK; |
2860 | EV_FREQUENT_CHECK; |
… | |
… | |
2831 | sa.sa_handler = ev_sighandler; |
2981 | sa.sa_handler = ev_sighandler; |
2832 | sigfillset (&sa.sa_mask); |
2982 | sigfillset (&sa.sa_mask); |
2833 | sa.sa_flags = SA_RESTART; /* if restarting works we save one iteration */ |
2983 | sa.sa_flags = SA_RESTART; /* if restarting works we save one iteration */ |
2834 | sigaction (w->signum, &sa, 0); |
2984 | sigaction (w->signum, &sa, 0); |
2835 | |
2985 | |
|
|
2986 | if (origflags & EVFLAG_NOSIGMASK) |
|
|
2987 | { |
2836 | sigemptyset (&sa.sa_mask); |
2988 | sigemptyset (&sa.sa_mask); |
2837 | sigaddset (&sa.sa_mask, w->signum); |
2989 | sigaddset (&sa.sa_mask, w->signum); |
2838 | sigprocmask (SIG_UNBLOCK, &sa.sa_mask, 0); |
2990 | sigprocmask (SIG_UNBLOCK, &sa.sa_mask, 0); |
|
|
2991 | } |
2839 | #endif |
2992 | #endif |
2840 | } |
2993 | } |
2841 | |
2994 | |
2842 | EV_FREQUENT_CHECK; |
2995 | EV_FREQUENT_CHECK; |
2843 | } |
2996 | } |
… | |
… | |
2984 | if (!pend || pend == path) |
3137 | if (!pend || pend == path) |
2985 | break; |
3138 | break; |
2986 | |
3139 | |
2987 | *pend = 0; |
3140 | *pend = 0; |
2988 | w->wd = inotify_add_watch (fs_fd, path, mask); |
3141 | w->wd = inotify_add_watch (fs_fd, path, mask); |
2989 | } |
3142 | } |
2990 | while (w->wd < 0 && (errno == ENOENT || errno == EACCES)); |
3143 | while (w->wd < 0 && (errno == ENOENT || errno == EACCES)); |
2991 | } |
3144 | } |
2992 | } |
3145 | } |
2993 | |
3146 | |
2994 | if (w->wd >= 0) |
3147 | if (w->wd >= 0) |
… | |
… | |
3059 | { |
3212 | { |
3060 | struct inotify_event *ev = (struct inotify_event *)(buf + ofs); |
3213 | struct inotify_event *ev = (struct inotify_event *)(buf + ofs); |
3061 | infy_wd (EV_A_ ev->wd, ev->wd, ev); |
3214 | infy_wd (EV_A_ ev->wd, ev->wd, ev); |
3062 | ofs += sizeof (struct inotify_event) + ev->len; |
3215 | ofs += sizeof (struct inotify_event) + ev->len; |
3063 | } |
3216 | } |
3064 | } |
|
|
3065 | |
|
|
3066 | inline_size unsigned int |
|
|
3067 | ev_linux_version (void) |
|
|
3068 | { |
|
|
3069 | struct utsname buf; |
|
|
3070 | unsigned int v; |
|
|
3071 | int i; |
|
|
3072 | char *p = buf.release; |
|
|
3073 | |
|
|
3074 | if (uname (&buf)) |
|
|
3075 | return 0; |
|
|
3076 | |
|
|
3077 | for (i = 3+1; --i; ) |
|
|
3078 | { |
|
|
3079 | unsigned int c = 0; |
|
|
3080 | |
|
|
3081 | for (;;) |
|
|
3082 | { |
|
|
3083 | if (*p >= '0' && *p <= '9') |
|
|
3084 | c = c * 10 + *p++ - '0'; |
|
|
3085 | else |
|
|
3086 | { |
|
|
3087 | p += *p == '.'; |
|
|
3088 | break; |
|
|
3089 | } |
|
|
3090 | } |
|
|
3091 | |
|
|
3092 | v = (v << 8) | c; |
|
|
3093 | } |
|
|
3094 | |
|
|
3095 | return v; |
|
|
3096 | } |
3217 | } |
3097 | |
3218 | |
3098 | inline_size void |
3219 | inline_size void |
3099 | ev_check_2625 (EV_P) |
3220 | ev_check_2625 (EV_P) |
3100 | { |
3221 | { |
… | |
… | |
3424 | |
3545 | |
3425 | #if EV_EMBED_ENABLE |
3546 | #if EV_EMBED_ENABLE |
3426 | void noinline |
3547 | void noinline |
3427 | ev_embed_sweep (EV_P_ ev_embed *w) |
3548 | ev_embed_sweep (EV_P_ ev_embed *w) |
3428 | { |
3549 | { |
3429 | ev_loop (w->other, EVLOOP_NONBLOCK); |
3550 | ev_run (w->other, EVRUN_NOWAIT); |
3430 | } |
3551 | } |
3431 | |
3552 | |
3432 | static void |
3553 | static void |
3433 | embed_io_cb (EV_P_ ev_io *io, int revents) |
3554 | embed_io_cb (EV_P_ ev_io *io, int revents) |
3434 | { |
3555 | { |
3435 | ev_embed *w = (ev_embed *)(((char *)io) - offsetof (ev_embed, io)); |
3556 | ev_embed *w = (ev_embed *)(((char *)io) - offsetof (ev_embed, io)); |
3436 | |
3557 | |
3437 | if (ev_cb (w)) |
3558 | if (ev_cb (w)) |
3438 | ev_feed_event (EV_A_ (W)w, EV_EMBED); |
3559 | ev_feed_event (EV_A_ (W)w, EV_EMBED); |
3439 | else |
3560 | else |
3440 | ev_loop (w->other, EVLOOP_NONBLOCK); |
3561 | ev_run (w->other, EVRUN_NOWAIT); |
3441 | } |
3562 | } |
3442 | |
3563 | |
3443 | static void |
3564 | static void |
3444 | embed_prepare_cb (EV_P_ ev_prepare *prepare, int revents) |
3565 | embed_prepare_cb (EV_P_ ev_prepare *prepare, int revents) |
3445 | { |
3566 | { |
… | |
… | |
3449 | EV_P = w->other; |
3570 | EV_P = w->other; |
3450 | |
3571 | |
3451 | while (fdchangecnt) |
3572 | while (fdchangecnt) |
3452 | { |
3573 | { |
3453 | fd_reify (EV_A); |
3574 | fd_reify (EV_A); |
3454 | ev_loop (EV_A_ EVLOOP_NONBLOCK); |
3575 | ev_run (EV_A_ EVRUN_NOWAIT); |
3455 | } |
3576 | } |
3456 | } |
3577 | } |
3457 | } |
3578 | } |
3458 | |
3579 | |
3459 | static void |
3580 | static void |
… | |
… | |
3465 | |
3586 | |
3466 | { |
3587 | { |
3467 | EV_P = w->other; |
3588 | EV_P = w->other; |
3468 | |
3589 | |
3469 | ev_loop_fork (EV_A); |
3590 | ev_loop_fork (EV_A); |
3470 | ev_loop (EV_A_ EVLOOP_NONBLOCK); |
3591 | ev_run (EV_A_ EVRUN_NOWAIT); |
3471 | } |
3592 | } |
3472 | |
3593 | |
3473 | ev_embed_start (EV_A_ w); |
3594 | ev_embed_start (EV_A_ w); |
3474 | } |
3595 | } |
3475 | |
3596 | |
… | |
… | |
3567 | |
3688 | |
3568 | EV_FREQUENT_CHECK; |
3689 | EV_FREQUENT_CHECK; |
3569 | } |
3690 | } |
3570 | #endif |
3691 | #endif |
3571 | |
3692 | |
3572 | #if EV_ASYNC_ENABLE |
3693 | #if EV_CLEANUP_ENABLE |
3573 | void |
3694 | void |
3574 | ev_async_start (EV_P_ ev_async *w) |
3695 | ev_cleanup_start (EV_P_ ev_cleanup *w) |
3575 | { |
3696 | { |
3576 | if (expect_false (ev_is_active (w))) |
3697 | if (expect_false (ev_is_active (w))) |
3577 | return; |
3698 | return; |
|
|
3699 | |
|
|
3700 | EV_FREQUENT_CHECK; |
|
|
3701 | |
|
|
3702 | ev_start (EV_A_ (W)w, ++cleanupcnt); |
|
|
3703 | array_needsize (ev_cleanup *, cleanups, cleanupmax, cleanupcnt, EMPTY2); |
|
|
3704 | cleanups [cleanupcnt - 1] = w; |
|
|
3705 | |
|
|
3706 | /* cleanup watchers should never keep a refcount on the loop */ |
|
|
3707 | ev_unref (EV_A); |
|
|
3708 | EV_FREQUENT_CHECK; |
|
|
3709 | } |
|
|
3710 | |
|
|
3711 | void |
|
|
3712 | ev_cleanup_stop (EV_P_ ev_cleanup *w) |
|
|
3713 | { |
|
|
3714 | clear_pending (EV_A_ (W)w); |
|
|
3715 | if (expect_false (!ev_is_active (w))) |
|
|
3716 | return; |
|
|
3717 | |
|
|
3718 | EV_FREQUENT_CHECK; |
|
|
3719 | ev_ref (EV_A); |
|
|
3720 | |
|
|
3721 | { |
|
|
3722 | int active = ev_active (w); |
|
|
3723 | |
|
|
3724 | cleanups [active - 1] = cleanups [--cleanupcnt]; |
|
|
3725 | ev_active (cleanups [active - 1]) = active; |
|
|
3726 | } |
|
|
3727 | |
|
|
3728 | ev_stop (EV_A_ (W)w); |
|
|
3729 | |
|
|
3730 | EV_FREQUENT_CHECK; |
|
|
3731 | } |
|
|
3732 | #endif |
|
|
3733 | |
|
|
3734 | #if EV_ASYNC_ENABLE |
|
|
3735 | void |
|
|
3736 | ev_async_start (EV_P_ ev_async *w) |
|
|
3737 | { |
|
|
3738 | if (expect_false (ev_is_active (w))) |
|
|
3739 | return; |
|
|
3740 | |
|
|
3741 | w->sent = 0; |
3578 | |
3742 | |
3579 | evpipe_init (EV_A); |
3743 | evpipe_init (EV_A); |
3580 | |
3744 | |
3581 | EV_FREQUENT_CHECK; |
3745 | EV_FREQUENT_CHECK; |
3582 | |
3746 | |
… | |
… | |
3802 | |
3966 | |
3803 | #if EV_MULTIPLICITY |
3967 | #if EV_MULTIPLICITY |
3804 | #include "ev_wrap.h" |
3968 | #include "ev_wrap.h" |
3805 | #endif |
3969 | #endif |
3806 | |
3970 | |
3807 | #ifdef __cplusplus |
3971 | EV_CPP(}) |
3808 | } |
|
|
3809 | #endif |
|
|
3810 | |
3972 | |