… | |
… | |
4 | * Copyright (c) 2007,2008,2009,2010,2011 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, |
… | |
… | |
42 | # ifdef EV_CONFIG_H |
42 | # ifdef EV_CONFIG_H |
43 | # include EV_CONFIG_H |
43 | # include EV_CONFIG_H |
44 | # else |
44 | # else |
45 | # include "config.h" |
45 | # include "config.h" |
46 | # endif |
46 | # endif |
|
|
47 | |
|
|
48 | #if HAVE_FLOOR |
|
|
49 | # ifndef EV_USE_FLOOR |
|
|
50 | # define EV_USE_FLOOR 1 |
|
|
51 | # endif |
|
|
52 | #endif |
47 | |
53 | |
48 | # if HAVE_CLOCK_SYSCALL |
54 | # if HAVE_CLOCK_SYSCALL |
49 | # ifndef EV_USE_CLOCK_SYSCALL |
55 | # ifndef EV_USE_CLOCK_SYSCALL |
50 | # define EV_USE_CLOCK_SYSCALL 1 |
56 | # define EV_USE_CLOCK_SYSCALL 1 |
51 | # ifndef EV_USE_REALTIME |
57 | # ifndef EV_USE_REALTIME |
… | |
… | |
156 | # define EV_USE_EVENTFD 0 |
162 | # define EV_USE_EVENTFD 0 |
157 | # endif |
163 | # endif |
158 | |
164 | |
159 | #endif |
165 | #endif |
160 | |
166 | |
161 | #include <math.h> |
|
|
162 | #include <stdlib.h> |
167 | #include <stdlib.h> |
163 | #include <string.h> |
168 | #include <string.h> |
164 | #include <fcntl.h> |
169 | #include <fcntl.h> |
165 | #include <stddef.h> |
170 | #include <stddef.h> |
166 | |
171 | |
… | |
… | |
232 | /* to make it compile regardless, just remove the above line, */ |
237 | /* to make it compile regardless, just remove the above line, */ |
233 | /* but consider reporting it, too! :) */ |
238 | /* but consider reporting it, too! :) */ |
234 | # define EV_NSIG 65 |
239 | # define EV_NSIG 65 |
235 | #endif |
240 | #endif |
236 | |
241 | |
|
|
242 | #ifndef EV_USE_FLOOR |
|
|
243 | # define EV_USE_FLOOR 0 |
|
|
244 | #endif |
|
|
245 | |
237 | #ifndef EV_USE_CLOCK_SYSCALL |
246 | #ifndef EV_USE_CLOCK_SYSCALL |
238 | # if __linux && __GLIBC__ >= 2 |
247 | # if __linux && __GLIBC__ >= 2 |
239 | # define EV_USE_CLOCK_SYSCALL EV_FEATURE_OS |
248 | # define EV_USE_CLOCK_SYSCALL EV_FEATURE_OS |
240 | # else |
249 | # else |
241 | # define EV_USE_CLOCK_SYSCALL 0 |
250 | # define EV_USE_CLOCK_SYSCALL 0 |
… | |
… | |
376 | # undef EV_USE_INOTIFY |
385 | # undef EV_USE_INOTIFY |
377 | # define EV_USE_INOTIFY 0 |
386 | # define EV_USE_INOTIFY 0 |
378 | #endif |
387 | #endif |
379 | |
388 | |
380 | #if !EV_USE_NANOSLEEP |
389 | #if !EV_USE_NANOSLEEP |
381 | # ifndef _WIN32 |
390 | /* hp-ux has it in sys/time.h, which we unconditionally include above */ |
|
|
391 | # if !defined(_WIN32) && !defined(__hpux) |
382 | # include <sys/select.h> |
392 | # include <sys/select.h> |
383 | # endif |
393 | # endif |
384 | #endif |
394 | #endif |
385 | |
395 | |
386 | #if EV_USE_INOTIFY |
396 | #if EV_USE_INOTIFY |
… | |
… | |
442 | #else |
452 | #else |
443 | # define EV_FREQUENT_CHECK do { } while (0) |
453 | # define EV_FREQUENT_CHECK do { } while (0) |
444 | #endif |
454 | #endif |
445 | |
455 | |
446 | /* |
456 | /* |
447 | * This is used to avoid floating point rounding problems. |
457 | * This is used to work around floating point rounding problems. |
448 | * It is added to ev_rt_now when scheduling periodics |
|
|
449 | * to ensure progress, time-wise, even when rounding |
|
|
450 | * errors are against us. |
|
|
451 | * This value is good at least till the year 4000. |
458 | * This value is good at least till the year 4000. |
452 | * Better solutions welcome. |
|
|
453 | */ |
459 | */ |
454 | #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 */ |
455 | |
462 | |
456 | #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) */ |
457 | #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) */ |
458 | |
465 | |
459 | #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) |
460 | #define EV_TS_SET(ts,t) do { ts.tv_sec = (long)t; ts.tv_nsec = (long)((t - ts.tv_sec) * 1e9); } while (0) |
467 | #define EV_TS_SET(ts,t) do { ts.tv_sec = (long)t; ts.tv_nsec = (long)((t - ts.tv_sec) * 1e9); } while (0) |
461 | |
468 | |
|
|
469 | /* the following is ecb.h embedded into libev - use update_ev_c to update from an external copy */ |
|
|
470 | /* ECB.H BEGIN */ |
|
|
471 | /* |
|
|
472 | * libecb - http://software.schmorp.de/pkg/libecb |
|
|
473 | * |
|
|
474 | * Copyright (©) 2009-2011 Marc Alexander Lehmann <libecb@schmorp.de> |
|
|
475 | * Copyright (©) 2011 Emanuele Giaquinta |
|
|
476 | * All rights reserved. |
|
|
477 | * |
|
|
478 | * Redistribution and use in source and binary forms, with or without modifica- |
|
|
479 | * tion, are permitted provided that the following conditions are met: |
|
|
480 | * |
|
|
481 | * 1. Redistributions of source code must retain the above copyright notice, |
|
|
482 | * this list of conditions and the following disclaimer. |
|
|
483 | * |
|
|
484 | * 2. Redistributions in binary form must reproduce the above copyright |
|
|
485 | * notice, this list of conditions and the following disclaimer in the |
|
|
486 | * documentation and/or other materials provided with the distribution. |
|
|
487 | * |
|
|
488 | * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR IMPLIED |
|
|
489 | * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MER- |
|
|
490 | * CHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO |
|
|
491 | * EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPE- |
|
|
492 | * CIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, |
|
|
493 | * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; |
|
|
494 | * OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, |
|
|
495 | * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTH- |
|
|
496 | * ERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED |
|
|
497 | * OF THE POSSIBILITY OF SUCH DAMAGE. |
|
|
498 | */ |
|
|
499 | |
|
|
500 | #ifndef ECB_H |
|
|
501 | #define ECB_H |
|
|
502 | |
|
|
503 | #ifdef _WIN32 |
|
|
504 | typedef signed char int8_t; |
|
|
505 | typedef unsigned char uint8_t; |
|
|
506 | typedef signed short int16_t; |
|
|
507 | typedef unsigned short uint16_t; |
|
|
508 | typedef signed int int32_t; |
|
|
509 | typedef unsigned int uint32_t; |
462 | #if __GNUC__ >= 4 |
510 | #if __GNUC__ |
463 | # define expect(expr,value) __builtin_expect ((expr),(value)) |
511 | typedef signed long long int64_t; |
464 | # define noinline __attribute__ ((noinline)) |
512 | typedef unsigned long long uint64_t; |
|
|
513 | #else /* _MSC_VER || __BORLANDC__ */ |
|
|
514 | typedef signed __int64 int64_t; |
|
|
515 | typedef unsigned __int64 uint64_t; |
|
|
516 | #endif |
465 | #else |
517 | #else |
466 | # define expect(expr,value) (expr) |
518 | #include <inttypes.h> |
467 | # define noinline |
|
|
468 | # if __STDC_VERSION__ < 199901L && __GNUC__ < 2 |
|
|
469 | # define inline |
|
|
470 | # endif |
519 | #endif |
|
|
520 | |
|
|
521 | /* many compilers define _GNUC_ to some versions but then only implement |
|
|
522 | * what their idiot authors think are the "more important" extensions, |
|
|
523 | * causing enormous grief in return for some better fake benchmark numbers. |
|
|
524 | * or so. |
|
|
525 | * we try to detect these and simply assume they are not gcc - if they have |
|
|
526 | * an issue with that they should have done it right in the first place. |
|
|
527 | */ |
|
|
528 | #ifndef ECB_GCC_VERSION |
|
|
529 | #if !defined(__GNUC_MINOR__) || defined(__INTEL_COMPILER) || defined(__SUNPRO_C) || defined(__SUNPRO_CC) || defined(__llvm__) || defined(__clang__) |
|
|
530 | #define ECB_GCC_VERSION(major,minor) 0 |
|
|
531 | #else |
|
|
532 | #define ECB_GCC_VERSION(major,minor) (__GNUC__ > (major) || (__GNUC__ == (major) && __GNUC_MINOR__ >= (minor))) |
471 | #endif |
533 | #endif |
|
|
534 | #endif |
472 | |
535 | |
|
|
536 | /*****************************************************************************/ |
|
|
537 | |
|
|
538 | /* ECB_NO_THREADS - ecb is not used by multiple threads, ever */ |
|
|
539 | /* ECB_NO_SMP - ecb might be used in multiple threads, but only on a single cpu */ |
|
|
540 | |
|
|
541 | #if ECB_NO_THREADS || ECB_NO_SMP |
|
|
542 | #define ECB_MEMORY_FENCE do { } while (0) |
|
|
543 | #endif |
|
|
544 | |
|
|
545 | #ifndef ECB_MEMORY_FENCE |
|
|
546 | #if ECB_GCC_VERSION(2,5) |
|
|
547 | #if __i386__ |
|
|
548 | #define ECB_MEMORY_FENCE __asm__ __volatile__ ("lock; orb $0, -1(%%esp)" : : : "memory") |
|
|
549 | #define ECB_MEMORY_FENCE_ACQUIRE ECB_MEMORY_FENCE /* non-lock xchg might be enough */ |
|
|
550 | #define ECB_MEMORY_FENCE_RELEASE do { } while (0) /* unlikely to change in future cpus */ |
|
|
551 | #elif __amd64 |
|
|
552 | #define ECB_MEMORY_FENCE __asm__ __volatile__ ("mfence" : : : "memory") |
|
|
553 | #define ECB_MEMORY_FENCE_ACQUIRE __asm__ __volatile__ ("lfence" : : : "memory") |
|
|
554 | #define ECB_MEMORY_FENCE_RELEASE __asm__ __volatile__ ("sfence") /* play safe - not needed in any current cpu */ |
|
|
555 | #elif __powerpc__ || __ppc__ || __powerpc64__ || __ppc64__ |
|
|
556 | #define ECB_MEMORY_FENCE __asm__ __volatile__ ("sync" : : : "memory") |
|
|
557 | #elif defined(__ARM_ARCH_6__ ) || defined(__ARM_ARCH_6J__ ) \ |
|
|
558 | || defined(__ARM_ARCH_6K__) || defined(__ARM_ARCH_6ZK__) |
|
|
559 | #define ECB_MEMORY_FENCE __asm__ __volatile__ ("mcr p15,0,%0,c7,c10,5" : : "r" (0) : "memory") |
|
|
560 | #elif defined(__ARM_ARCH_7__ ) || defined(__ARM_ARCH_7A__ ) \ |
|
|
561 | || defined(__ARM_ARCH_7M__) || defined(__ARM_ARCH_7R__ ) |
|
|
562 | #define ECB_MEMORY_FENCE __asm__ __volatile__ ("dmb" : : : "memory") |
|
|
563 | #endif |
|
|
564 | #endif |
|
|
565 | #endif |
|
|
566 | |
|
|
567 | #ifndef ECB_MEMORY_FENCE |
|
|
568 | #if ECB_GCC_VERSION(4,4) || defined(__INTEL_COMPILER) |
|
|
569 | #define ECB_MEMORY_FENCE __sync_synchronize () |
|
|
570 | /*#define ECB_MEMORY_FENCE_ACQUIRE ({ char dummy = 0; __sync_lock_test_and_set (&dummy, 1); }) */ |
|
|
571 | /*#define ECB_MEMORY_FENCE_RELEASE ({ char dummy = 1; __sync_lock_release (&dummy ); }) */ |
|
|
572 | #elif _MSC_VER >= 1400 /* VC++ 2005 */ |
|
|
573 | #pragma intrinsic(_ReadBarrier,_WriteBarrier,_ReadWriteBarrier) |
|
|
574 | #define ECB_MEMORY_FENCE _ReadWriteBarrier () |
|
|
575 | #define ECB_MEMORY_FENCE_ACQUIRE _ReadWriteBarrier () /* according to msdn, _ReadBarrier is not a load fence */ |
|
|
576 | #define ECB_MEMORY_FENCE_RELEASE _WriteBarrier () |
|
|
577 | #elif defined(_WIN32) |
|
|
578 | #include <WinNT.h> |
|
|
579 | #define ECB_MEMORY_FENCE MemoryBarrier () /* actually just xchg on x86... scary */ |
|
|
580 | #endif |
|
|
581 | #endif |
|
|
582 | |
|
|
583 | #ifndef ECB_MEMORY_FENCE |
|
|
584 | #if !ECB_AVOID_PTHREADS |
|
|
585 | /* |
|
|
586 | * if you get undefined symbol references to pthread_mutex_lock, |
|
|
587 | * or failure to find pthread.h, then you should implement |
|
|
588 | * the ECB_MEMORY_FENCE operations for your cpu/compiler |
|
|
589 | * OR provide pthread.h and link against the posix thread library |
|
|
590 | * of your system. |
|
|
591 | */ |
|
|
592 | #include <pthread.h> |
|
|
593 | #define ECB_NEEDS_PTHREADS 1 |
|
|
594 | #define ECB_MEMORY_FENCE_NEEDS_PTHREADS 1 |
|
|
595 | |
|
|
596 | static pthread_mutex_t ecb_mf_lock = PTHREAD_MUTEX_INITIALIZER; |
|
|
597 | #define ECB_MEMORY_FENCE do { pthread_mutex_lock (&ecb_mf_lock); pthread_mutex_unlock (&ecb_mf_lock); } while (0) |
|
|
598 | #endif |
|
|
599 | #endif |
|
|
600 | |
|
|
601 | #if !defined(ECB_MEMORY_FENCE_ACQUIRE) && defined(ECB_MEMORY_FENCE) |
|
|
602 | #define ECB_MEMORY_FENCE_ACQUIRE ECB_MEMORY_FENCE |
|
|
603 | #endif |
|
|
604 | |
|
|
605 | #if !defined(ECB_MEMORY_FENCE_RELEASE) && defined(ECB_MEMORY_FENCE) |
|
|
606 | #define ECB_MEMORY_FENCE_RELEASE ECB_MEMORY_FENCE |
|
|
607 | #endif |
|
|
608 | |
|
|
609 | /*****************************************************************************/ |
|
|
610 | |
|
|
611 | #define ECB_C99 (__STDC_VERSION__ >= 199901L) |
|
|
612 | |
|
|
613 | #if __cplusplus |
|
|
614 | #define ecb_inline static inline |
|
|
615 | #elif ECB_GCC_VERSION(2,5) |
|
|
616 | #define ecb_inline static __inline__ |
|
|
617 | #elif ECB_C99 |
|
|
618 | #define ecb_inline static inline |
|
|
619 | #else |
|
|
620 | #define ecb_inline static |
|
|
621 | #endif |
|
|
622 | |
|
|
623 | #if ECB_GCC_VERSION(3,3) |
|
|
624 | #define ecb_restrict __restrict__ |
|
|
625 | #elif ECB_C99 |
|
|
626 | #define ecb_restrict restrict |
|
|
627 | #else |
|
|
628 | #define ecb_restrict |
|
|
629 | #endif |
|
|
630 | |
|
|
631 | typedef int ecb_bool; |
|
|
632 | |
|
|
633 | #define ECB_CONCAT_(a, b) a ## b |
|
|
634 | #define ECB_CONCAT(a, b) ECB_CONCAT_(a, b) |
|
|
635 | #define ECB_STRINGIFY_(a) # a |
|
|
636 | #define ECB_STRINGIFY(a) ECB_STRINGIFY_(a) |
|
|
637 | |
|
|
638 | #define ecb_function_ ecb_inline |
|
|
639 | |
|
|
640 | #if ECB_GCC_VERSION(3,1) |
|
|
641 | #define ecb_attribute(attrlist) __attribute__(attrlist) |
|
|
642 | #define ecb_is_constant(expr) __builtin_constant_p (expr) |
|
|
643 | #define ecb_expect(expr,value) __builtin_expect ((expr),(value)) |
|
|
644 | #define ecb_prefetch(addr,rw,locality) __builtin_prefetch (addr, rw, locality) |
|
|
645 | #else |
|
|
646 | #define ecb_attribute(attrlist) |
|
|
647 | #define ecb_is_constant(expr) 0 |
|
|
648 | #define ecb_expect(expr,value) (expr) |
|
|
649 | #define ecb_prefetch(addr,rw,locality) |
|
|
650 | #endif |
|
|
651 | |
|
|
652 | /* no emulation for ecb_decltype */ |
|
|
653 | #if ECB_GCC_VERSION(4,5) |
|
|
654 | #define ecb_decltype(x) __decltype(x) |
|
|
655 | #elif ECB_GCC_VERSION(3,0) |
|
|
656 | #define ecb_decltype(x) __typeof(x) |
|
|
657 | #endif |
|
|
658 | |
|
|
659 | #define ecb_noinline ecb_attribute ((__noinline__)) |
|
|
660 | #define ecb_noreturn ecb_attribute ((__noreturn__)) |
|
|
661 | #define ecb_unused ecb_attribute ((__unused__)) |
|
|
662 | #define ecb_const ecb_attribute ((__const__)) |
|
|
663 | #define ecb_pure ecb_attribute ((__pure__)) |
|
|
664 | |
|
|
665 | #if ECB_GCC_VERSION(4,3) |
|
|
666 | #define ecb_artificial ecb_attribute ((__artificial__)) |
|
|
667 | #define ecb_hot ecb_attribute ((__hot__)) |
|
|
668 | #define ecb_cold ecb_attribute ((__cold__)) |
|
|
669 | #else |
|
|
670 | #define ecb_artificial |
|
|
671 | #define ecb_hot |
|
|
672 | #define ecb_cold |
|
|
673 | #endif |
|
|
674 | |
|
|
675 | /* put around conditional expressions if you are very sure that the */ |
|
|
676 | /* expression is mostly true or mostly false. note that these return */ |
|
|
677 | /* booleans, not the expression. */ |
473 | #define expect_false(expr) expect ((expr) != 0, 0) |
678 | #define ecb_expect_false(expr) ecb_expect (!!(expr), 0) |
474 | #define expect_true(expr) expect ((expr) != 0, 1) |
679 | #define ecb_expect_true(expr) ecb_expect (!!(expr), 1) |
|
|
680 | /* for compatibility to the rest of the world */ |
|
|
681 | #define ecb_likely(expr) ecb_expect_true (expr) |
|
|
682 | #define ecb_unlikely(expr) ecb_expect_false (expr) |
|
|
683 | |
|
|
684 | /* count trailing zero bits and count # of one bits */ |
|
|
685 | #if ECB_GCC_VERSION(3,4) |
|
|
686 | /* we assume int == 32 bit, long == 32 or 64 bit and long long == 64 bit */ |
|
|
687 | #define ecb_ld32(x) (__builtin_clz (x) ^ 31) |
|
|
688 | #define ecb_ld64(x) (__builtin_clzll (x) ^ 63) |
|
|
689 | #define ecb_ctz32(x) __builtin_ctz (x) |
|
|
690 | #define ecb_ctz64(x) __builtin_ctzll (x) |
|
|
691 | #define ecb_popcount32(x) __builtin_popcount (x) |
|
|
692 | /* no popcountll */ |
|
|
693 | #else |
|
|
694 | ecb_function_ int ecb_ctz32 (uint32_t x) ecb_const; |
|
|
695 | ecb_function_ int |
|
|
696 | ecb_ctz32 (uint32_t x) |
|
|
697 | { |
|
|
698 | int r = 0; |
|
|
699 | |
|
|
700 | x &= ~x + 1; /* this isolates the lowest bit */ |
|
|
701 | |
|
|
702 | #if ECB_branchless_on_i386 |
|
|
703 | r += !!(x & 0xaaaaaaaa) << 0; |
|
|
704 | r += !!(x & 0xcccccccc) << 1; |
|
|
705 | r += !!(x & 0xf0f0f0f0) << 2; |
|
|
706 | r += !!(x & 0xff00ff00) << 3; |
|
|
707 | r += !!(x & 0xffff0000) << 4; |
|
|
708 | #else |
|
|
709 | if (x & 0xaaaaaaaa) r += 1; |
|
|
710 | if (x & 0xcccccccc) r += 2; |
|
|
711 | if (x & 0xf0f0f0f0) r += 4; |
|
|
712 | if (x & 0xff00ff00) r += 8; |
|
|
713 | if (x & 0xffff0000) r += 16; |
|
|
714 | #endif |
|
|
715 | |
|
|
716 | return r; |
|
|
717 | } |
|
|
718 | |
|
|
719 | ecb_function_ int ecb_ctz64 (uint64_t x) ecb_const; |
|
|
720 | ecb_function_ int |
|
|
721 | ecb_ctz64 (uint64_t x) |
|
|
722 | { |
|
|
723 | int shift = x & 0xffffffffU ? 0 : 32; |
|
|
724 | return ecb_ctz32 (x >> shift) + shift; |
|
|
725 | } |
|
|
726 | |
|
|
727 | ecb_function_ int ecb_popcount32 (uint32_t x) ecb_const; |
|
|
728 | ecb_function_ int |
|
|
729 | ecb_popcount32 (uint32_t x) |
|
|
730 | { |
|
|
731 | x -= (x >> 1) & 0x55555555; |
|
|
732 | x = ((x >> 2) & 0x33333333) + (x & 0x33333333); |
|
|
733 | x = ((x >> 4) + x) & 0x0f0f0f0f; |
|
|
734 | x *= 0x01010101; |
|
|
735 | |
|
|
736 | return x >> 24; |
|
|
737 | } |
|
|
738 | |
|
|
739 | ecb_function_ int ecb_ld32 (uint32_t x) ecb_const; |
|
|
740 | ecb_function_ int ecb_ld32 (uint32_t x) |
|
|
741 | { |
|
|
742 | int r = 0; |
|
|
743 | |
|
|
744 | if (x >> 16) { x >>= 16; r += 16; } |
|
|
745 | if (x >> 8) { x >>= 8; r += 8; } |
|
|
746 | if (x >> 4) { x >>= 4; r += 4; } |
|
|
747 | if (x >> 2) { x >>= 2; r += 2; } |
|
|
748 | if (x >> 1) { r += 1; } |
|
|
749 | |
|
|
750 | return r; |
|
|
751 | } |
|
|
752 | |
|
|
753 | ecb_function_ int ecb_ld64 (uint64_t x) ecb_const; |
|
|
754 | ecb_function_ int ecb_ld64 (uint64_t x) |
|
|
755 | { |
|
|
756 | int r = 0; |
|
|
757 | |
|
|
758 | if (x >> 32) { x >>= 32; r += 32; } |
|
|
759 | |
|
|
760 | return r + ecb_ld32 (x); |
|
|
761 | } |
|
|
762 | #endif |
|
|
763 | |
|
|
764 | /* popcount64 is only available on 64 bit cpus as gcc builtin */ |
|
|
765 | /* so for this version we are lazy */ |
|
|
766 | ecb_function_ int ecb_popcount64 (uint64_t x) ecb_const; |
|
|
767 | ecb_function_ int |
|
|
768 | ecb_popcount64 (uint64_t x) |
|
|
769 | { |
|
|
770 | return ecb_popcount32 (x) + ecb_popcount32 (x >> 32); |
|
|
771 | } |
|
|
772 | |
|
|
773 | ecb_inline uint8_t ecb_rotl8 (uint8_t x, unsigned int count) ecb_const; |
|
|
774 | ecb_inline uint8_t ecb_rotr8 (uint8_t x, unsigned int count) ecb_const; |
|
|
775 | ecb_inline uint16_t ecb_rotl16 (uint16_t x, unsigned int count) ecb_const; |
|
|
776 | ecb_inline uint16_t ecb_rotr16 (uint16_t x, unsigned int count) ecb_const; |
|
|
777 | ecb_inline uint32_t ecb_rotl32 (uint32_t x, unsigned int count) ecb_const; |
|
|
778 | ecb_inline uint32_t ecb_rotr32 (uint32_t x, unsigned int count) ecb_const; |
|
|
779 | ecb_inline uint64_t ecb_rotl64 (uint64_t x, unsigned int count) ecb_const; |
|
|
780 | ecb_inline uint64_t ecb_rotr64 (uint64_t x, unsigned int count) ecb_const; |
|
|
781 | |
|
|
782 | ecb_inline uint8_t ecb_rotl8 (uint8_t x, unsigned int count) { return (x >> ( 8 - count)) | (x << count); } |
|
|
783 | ecb_inline uint8_t ecb_rotr8 (uint8_t x, unsigned int count) { return (x << ( 8 - count)) | (x >> count); } |
|
|
784 | ecb_inline uint16_t ecb_rotl16 (uint16_t x, unsigned int count) { return (x >> (16 - count)) | (x << count); } |
|
|
785 | ecb_inline uint16_t ecb_rotr16 (uint16_t x, unsigned int count) { return (x << (16 - count)) | (x >> count); } |
|
|
786 | ecb_inline uint32_t ecb_rotl32 (uint32_t x, unsigned int count) { return (x >> (32 - count)) | (x << count); } |
|
|
787 | ecb_inline uint32_t ecb_rotr32 (uint32_t x, unsigned int count) { return (x << (32 - count)) | (x >> count); } |
|
|
788 | ecb_inline uint64_t ecb_rotl64 (uint64_t x, unsigned int count) { return (x >> (64 - count)) | (x << count); } |
|
|
789 | ecb_inline uint64_t ecb_rotr64 (uint64_t x, unsigned int count) { return (x << (64 - count)) | (x >> count); } |
|
|
790 | |
|
|
791 | #if ECB_GCC_VERSION(4,3) |
|
|
792 | #define ecb_bswap16(x) (__builtin_bswap32 (x) >> 16) |
|
|
793 | #define ecb_bswap32(x) __builtin_bswap32 (x) |
|
|
794 | #define ecb_bswap64(x) __builtin_bswap64 (x) |
|
|
795 | #else |
|
|
796 | ecb_function_ uint16_t ecb_bswap16 (uint16_t x) ecb_const; |
|
|
797 | ecb_function_ uint16_t |
|
|
798 | ecb_bswap16 (uint16_t x) |
|
|
799 | { |
|
|
800 | return ecb_rotl16 (x, 8); |
|
|
801 | } |
|
|
802 | |
|
|
803 | ecb_function_ uint32_t ecb_bswap32 (uint32_t x) ecb_const; |
|
|
804 | ecb_function_ uint32_t |
|
|
805 | ecb_bswap32 (uint32_t x) |
|
|
806 | { |
|
|
807 | return (((uint32_t)ecb_bswap16 (x)) << 16) | ecb_bswap16 (x >> 16); |
|
|
808 | } |
|
|
809 | |
|
|
810 | ecb_function_ uint64_t ecb_bswap64 (uint64_t x) ecb_const; |
|
|
811 | ecb_function_ uint64_t |
|
|
812 | ecb_bswap64 (uint64_t x) |
|
|
813 | { |
|
|
814 | return (((uint64_t)ecb_bswap32 (x)) << 32) | ecb_bswap32 (x >> 32); |
|
|
815 | } |
|
|
816 | #endif |
|
|
817 | |
|
|
818 | #if ECB_GCC_VERSION(4,5) |
|
|
819 | #define ecb_unreachable() __builtin_unreachable () |
|
|
820 | #else |
|
|
821 | /* this seems to work fine, but gcc always emits a warning for it :/ */ |
|
|
822 | ecb_function_ void ecb_unreachable (void) ecb_noreturn; |
|
|
823 | ecb_function_ void ecb_unreachable (void) { } |
|
|
824 | #endif |
|
|
825 | |
|
|
826 | /* try to tell the compiler that some condition is definitely true */ |
|
|
827 | #define ecb_assume(cond) do { if (!(cond)) ecb_unreachable (); } while (0) |
|
|
828 | |
|
|
829 | ecb_function_ unsigned char ecb_byteorder_helper (void) ecb_const; |
|
|
830 | ecb_function_ unsigned char |
|
|
831 | ecb_byteorder_helper (void) |
|
|
832 | { |
|
|
833 | const uint32_t u = 0x11223344; |
|
|
834 | return *(unsigned char *)&u; |
|
|
835 | } |
|
|
836 | |
|
|
837 | ecb_function_ ecb_bool ecb_big_endian (void) ecb_const; |
|
|
838 | ecb_function_ ecb_bool ecb_big_endian (void) { return ecb_byteorder_helper () == 0x11; } |
|
|
839 | ecb_function_ ecb_bool ecb_little_endian (void) ecb_const; |
|
|
840 | ecb_function_ ecb_bool ecb_little_endian (void) { return ecb_byteorder_helper () == 0x44; } |
|
|
841 | |
|
|
842 | #if ECB_GCC_VERSION(3,0) || ECB_C99 |
|
|
843 | #define ecb_mod(m,n) ((m) % (n) + ((m) % (n) < 0 ? (n) : 0)) |
|
|
844 | #else |
|
|
845 | #define ecb_mod(m,n) ((m) < 0 ? ((n) - 1 - ((-1 - (m)) % (n))) : ((m) % (n))) |
|
|
846 | #endif |
|
|
847 | |
|
|
848 | #if ecb_cplusplus_does_not_suck |
|
|
849 | /* does not work for local types (http://www.open-std.org/jtc1/sc22/wg21/docs/papers/2008/n2657.htm) */ |
|
|
850 | template<typename T, int N> |
|
|
851 | static inline int ecb_array_length (const T (&arr)[N]) |
|
|
852 | { |
|
|
853 | return N; |
|
|
854 | } |
|
|
855 | #else |
|
|
856 | #define ecb_array_length(name) (sizeof (name) / sizeof (name [0])) |
|
|
857 | #endif |
|
|
858 | |
|
|
859 | #endif |
|
|
860 | |
|
|
861 | /* ECB.H END */ |
|
|
862 | |
|
|
863 | #if ECB_MEMORY_FENCE_NEEDS_PTHREADS |
|
|
864 | /* if your architecture doesn't need memory fences, e.g. because it is |
|
|
865 | * single-cpu/core, or if you use libev in a project that doesn't use libev |
|
|
866 | * from multiple threads, then you can define ECB_AVOID_PTHREADS when compiling |
|
|
867 | * libev, in which casess the memory fences become nops. |
|
|
868 | * alternatively, you can remove this #error and link against libpthread, |
|
|
869 | * which will then provide the memory fences. |
|
|
870 | */ |
|
|
871 | # error "memory fences not defined for your architecture, please report" |
|
|
872 | #endif |
|
|
873 | |
|
|
874 | #ifndef ECB_MEMORY_FENCE |
|
|
875 | # define ECB_MEMORY_FENCE do { } while (0) |
|
|
876 | # define ECB_MEMORY_FENCE_ACQUIRE ECB_MEMORY_FENCE |
|
|
877 | # define ECB_MEMORY_FENCE_RELEASE ECB_MEMORY_FENCE |
|
|
878 | #endif |
|
|
879 | |
|
|
880 | #define expect_false(cond) ecb_expect_false (cond) |
|
|
881 | #define expect_true(cond) ecb_expect_true (cond) |
|
|
882 | #define noinline ecb_noinline |
|
|
883 | |
475 | #define inline_size static inline |
884 | #define inline_size ecb_inline |
476 | |
885 | |
477 | #if EV_FEATURE_CODE |
886 | #if EV_FEATURE_CODE |
478 | # define inline_speed static inline |
887 | # define inline_speed ecb_inline |
479 | #else |
888 | #else |
480 | # define inline_speed static noinline |
889 | # define inline_speed static noinline |
481 | #endif |
890 | #endif |
482 | |
891 | |
483 | #define NUMPRI (EV_MAXPRI - EV_MINPRI + 1) |
892 | #define NUMPRI (EV_MAXPRI - EV_MINPRI + 1) |
… | |
… | |
522 | # include "ev_win32.c" |
931 | # include "ev_win32.c" |
523 | #endif |
932 | #endif |
524 | |
933 | |
525 | /*****************************************************************************/ |
934 | /*****************************************************************************/ |
526 | |
935 | |
|
|
936 | /* define a suitable floor function (only used by periodics atm) */ |
|
|
937 | |
|
|
938 | #if EV_USE_FLOOR |
|
|
939 | # include <math.h> |
|
|
940 | # define ev_floor(v) floor (v) |
|
|
941 | #else |
|
|
942 | |
|
|
943 | #include <float.h> |
|
|
944 | |
|
|
945 | /* a floor() replacement function, should be independent of ev_tstamp type */ |
|
|
946 | static ev_tstamp noinline |
|
|
947 | ev_floor (ev_tstamp v) |
|
|
948 | { |
|
|
949 | /* the choice of shift factor is not terribly important */ |
|
|
950 | #if FLT_RADIX != 2 /* assume FLT_RADIX == 10 */ |
|
|
951 | const ev_tstamp shift = sizeof (unsigned long) >= 8 ? 10000000000000000000. : 1000000000.; |
|
|
952 | #else |
|
|
953 | const ev_tstamp shift = sizeof (unsigned long) >= 8 ? 18446744073709551616. : 4294967296.; |
|
|
954 | #endif |
|
|
955 | |
|
|
956 | /* argument too large for an unsigned long? */ |
|
|
957 | if (expect_false (v >= shift)) |
|
|
958 | { |
|
|
959 | ev_tstamp f; |
|
|
960 | |
|
|
961 | if (v == v - 1.) |
|
|
962 | return v; /* very large number */ |
|
|
963 | |
|
|
964 | f = shift * ev_floor (v * (1. / shift)); |
|
|
965 | return f + ev_floor (v - f); |
|
|
966 | } |
|
|
967 | |
|
|
968 | /* special treatment for negative args? */ |
|
|
969 | if (expect_false (v < 0.)) |
|
|
970 | { |
|
|
971 | ev_tstamp f = -ev_floor (-v); |
|
|
972 | |
|
|
973 | return f - (f == v ? 0 : 1); |
|
|
974 | } |
|
|
975 | |
|
|
976 | /* fits into an unsigned long */ |
|
|
977 | return (unsigned long)v; |
|
|
978 | } |
|
|
979 | |
|
|
980 | #endif |
|
|
981 | |
|
|
982 | /*****************************************************************************/ |
|
|
983 | |
527 | #ifdef __linux |
984 | #ifdef __linux |
528 | # include <sys/utsname.h> |
985 | # include <sys/utsname.h> |
529 | #endif |
986 | #endif |
530 | |
987 | |
531 | static unsigned int noinline |
988 | static unsigned int noinline ecb_cold |
532 | ev_linux_version (void) |
989 | ev_linux_version (void) |
533 | { |
990 | { |
534 | #ifdef __linux |
991 | #ifdef __linux |
535 | unsigned int v = 0; |
992 | unsigned int v = 0; |
536 | struct utsname buf; |
993 | struct utsname buf; |
… | |
… | |
565 | } |
1022 | } |
566 | |
1023 | |
567 | /*****************************************************************************/ |
1024 | /*****************************************************************************/ |
568 | |
1025 | |
569 | #if EV_AVOID_STDIO |
1026 | #if EV_AVOID_STDIO |
570 | static void noinline |
1027 | static void noinline ecb_cold |
571 | ev_printerr (const char *msg) |
1028 | ev_printerr (const char *msg) |
572 | { |
1029 | { |
573 | write (STDERR_FILENO, msg, strlen (msg)); |
1030 | write (STDERR_FILENO, msg, strlen (msg)); |
574 | } |
1031 | } |
575 | #endif |
1032 | #endif |
576 | |
1033 | |
577 | static void (*syserr_cb)(const char *msg); |
1034 | static void (*syserr_cb)(const char *msg); |
578 | |
1035 | |
579 | void |
1036 | void ecb_cold |
580 | ev_set_syserr_cb (void (*cb)(const char *msg)) |
1037 | ev_set_syserr_cb (void (*cb)(const char *msg)) |
581 | { |
1038 | { |
582 | syserr_cb = cb; |
1039 | syserr_cb = cb; |
583 | } |
1040 | } |
584 | |
1041 | |
585 | static void noinline |
1042 | static void noinline ecb_cold |
586 | ev_syserr (const char *msg) |
1043 | ev_syserr (const char *msg) |
587 | { |
1044 | { |
588 | if (!msg) |
1045 | if (!msg) |
589 | msg = "(libev) system error"; |
1046 | msg = "(libev) system error"; |
590 | |
1047 | |
… | |
… | |
623 | #endif |
1080 | #endif |
624 | } |
1081 | } |
625 | |
1082 | |
626 | static void *(*alloc)(void *ptr, long size) = ev_realloc_emul; |
1083 | static void *(*alloc)(void *ptr, long size) = ev_realloc_emul; |
627 | |
1084 | |
628 | void |
1085 | void ecb_cold |
629 | ev_set_allocator (void *(*cb)(void *ptr, long size)) |
1086 | ev_set_allocator (void *(*cb)(void *ptr, long size)) |
630 | { |
1087 | { |
631 | alloc = cb; |
1088 | alloc = cb; |
632 | } |
1089 | } |
633 | |
1090 | |
… | |
… | |
842 | } |
1299 | } |
843 | |
1300 | |
844 | return ncur; |
1301 | return ncur; |
845 | } |
1302 | } |
846 | |
1303 | |
847 | static noinline void * |
1304 | static void * noinline ecb_cold |
848 | array_realloc (int elem, void *base, int *cur, int cnt) |
1305 | array_realloc (int elem, void *base, int *cur, int cnt) |
849 | { |
1306 | { |
850 | *cur = array_nextsize (elem, *cur, cnt); |
1307 | *cur = array_nextsize (elem, *cur, cnt); |
851 | return ev_realloc (base, elem * *cur); |
1308 | return ev_realloc (base, elem * *cur); |
852 | } |
1309 | } |
… | |
… | |
855 | memset ((void *)(base), 0, sizeof (*(base)) * (count)) |
1312 | memset ((void *)(base), 0, sizeof (*(base)) * (count)) |
856 | |
1313 | |
857 | #define array_needsize(type,base,cur,cnt,init) \ |
1314 | #define array_needsize(type,base,cur,cnt,init) \ |
858 | if (expect_false ((cnt) > (cur))) \ |
1315 | if (expect_false ((cnt) > (cur))) \ |
859 | { \ |
1316 | { \ |
860 | int ocur_ = (cur); \ |
1317 | int ecb_unused ocur_ = (cur); \ |
861 | (base) = (type *)array_realloc \ |
1318 | (base) = (type *)array_realloc \ |
862 | (sizeof (type), (base), &(cur), (cnt)); \ |
1319 | (sizeof (type), (base), &(cur), (cnt)); \ |
863 | init ((base) + (ocur_), (cur) - ocur_); \ |
1320 | init ((base) + (ocur_), (cur) - ocur_); \ |
864 | } |
1321 | } |
865 | |
1322 | |
… | |
… | |
965 | inline_size void |
1422 | inline_size void |
966 | fd_reify (EV_P) |
1423 | fd_reify (EV_P) |
967 | { |
1424 | { |
968 | int i; |
1425 | int i; |
969 | |
1426 | |
|
|
1427 | #if EV_SELECT_IS_WINSOCKET || EV_USE_IOCP |
|
|
1428 | for (i = 0; i < fdchangecnt; ++i) |
|
|
1429 | { |
|
|
1430 | int fd = fdchanges [i]; |
|
|
1431 | ANFD *anfd = anfds + fd; |
|
|
1432 | |
|
|
1433 | if (anfd->reify & EV__IOFDSET && anfd->head) |
|
|
1434 | { |
|
|
1435 | SOCKET handle = EV_FD_TO_WIN32_HANDLE (fd); |
|
|
1436 | |
|
|
1437 | if (handle != anfd->handle) |
|
|
1438 | { |
|
|
1439 | unsigned long arg; |
|
|
1440 | |
|
|
1441 | assert (("libev: only socket fds supported in this configuration", ioctlsocket (handle, FIONREAD, &arg) == 0)); |
|
|
1442 | |
|
|
1443 | /* handle changed, but fd didn't - we need to do it in two steps */ |
|
|
1444 | backend_modify (EV_A_ fd, anfd->events, 0); |
|
|
1445 | anfd->events = 0; |
|
|
1446 | anfd->handle = handle; |
|
|
1447 | } |
|
|
1448 | } |
|
|
1449 | } |
|
|
1450 | #endif |
|
|
1451 | |
970 | for (i = 0; i < fdchangecnt; ++i) |
1452 | for (i = 0; i < fdchangecnt; ++i) |
971 | { |
1453 | { |
972 | int fd = fdchanges [i]; |
1454 | int fd = fdchanges [i]; |
973 | ANFD *anfd = anfds + fd; |
1455 | ANFD *anfd = anfds + fd; |
974 | ev_io *w; |
1456 | ev_io *w; |
… | |
… | |
976 | unsigned char o_events = anfd->events; |
1458 | unsigned char o_events = anfd->events; |
977 | unsigned char o_reify = anfd->reify; |
1459 | unsigned char o_reify = anfd->reify; |
978 | |
1460 | |
979 | anfd->reify = 0; |
1461 | anfd->reify = 0; |
980 | |
1462 | |
981 | #if EV_SELECT_IS_WINSOCKET || EV_USE_IOCP |
|
|
982 | if (o_reify & EV__IOFDSET) |
|
|
983 | { |
|
|
984 | unsigned long arg; |
|
|
985 | anfd->handle = EV_FD_TO_WIN32_HANDLE (fd); |
|
|
986 | assert (("libev: only socket fds supported in this configuration", ioctlsocket (anfd->handle, FIONREAD, &arg) == 0)); |
|
|
987 | printf ("oi %d %x\n", fd, anfd->handle);//D |
|
|
988 | } |
|
|
989 | #endif |
|
|
990 | |
|
|
991 | /*if (expect_true (o_reify & EV_ANFD_REIFY)) probably a deoptimisation */ |
1463 | /*if (expect_true (o_reify & EV_ANFD_REIFY)) probably a deoptimisation */ |
992 | { |
1464 | { |
993 | anfd->events = 0; |
1465 | anfd->events = 0; |
994 | |
1466 | |
995 | for (w = (ev_io *)anfd->head; w; w = (ev_io *)((WL)w)->next) |
1467 | for (w = (ev_io *)anfd->head; w; w = (ev_io *)((WL)w)->next) |
… | |
… | |
1020 | fdchanges [fdchangecnt - 1] = fd; |
1492 | fdchanges [fdchangecnt - 1] = fd; |
1021 | } |
1493 | } |
1022 | } |
1494 | } |
1023 | |
1495 | |
1024 | /* the given fd is invalid/unusable, so make sure it doesn't hurt us anymore */ |
1496 | /* the given fd is invalid/unusable, so make sure it doesn't hurt us anymore */ |
1025 | inline_speed void |
1497 | inline_speed void ecb_cold |
1026 | fd_kill (EV_P_ int fd) |
1498 | fd_kill (EV_P_ int fd) |
1027 | { |
1499 | { |
1028 | ev_io *w; |
1500 | ev_io *w; |
1029 | |
1501 | |
1030 | while ((w = (ev_io *)anfds [fd].head)) |
1502 | while ((w = (ev_io *)anfds [fd].head)) |
… | |
… | |
1033 | ev_feed_event (EV_A_ (W)w, EV_ERROR | EV_READ | EV_WRITE); |
1505 | ev_feed_event (EV_A_ (W)w, EV_ERROR | EV_READ | EV_WRITE); |
1034 | } |
1506 | } |
1035 | } |
1507 | } |
1036 | |
1508 | |
1037 | /* check whether the given fd is actually valid, for error recovery */ |
1509 | /* check whether the given fd is actually valid, for error recovery */ |
1038 | inline_size int |
1510 | inline_size int ecb_cold |
1039 | fd_valid (int fd) |
1511 | fd_valid (int fd) |
1040 | { |
1512 | { |
1041 | #ifdef _WIN32 |
1513 | #ifdef _WIN32 |
1042 | return EV_FD_TO_WIN32_HANDLE (fd) != -1; |
1514 | return EV_FD_TO_WIN32_HANDLE (fd) != -1; |
1043 | #else |
1515 | #else |
1044 | return fcntl (fd, F_GETFD) != -1; |
1516 | return fcntl (fd, F_GETFD) != -1; |
1045 | #endif |
1517 | #endif |
1046 | } |
1518 | } |
1047 | |
1519 | |
1048 | /* called on EBADF to verify fds */ |
1520 | /* called on EBADF to verify fds */ |
1049 | static void noinline |
1521 | static void noinline ecb_cold |
1050 | fd_ebadf (EV_P) |
1522 | fd_ebadf (EV_P) |
1051 | { |
1523 | { |
1052 | int fd; |
1524 | int fd; |
1053 | |
1525 | |
1054 | for (fd = 0; fd < anfdmax; ++fd) |
1526 | for (fd = 0; fd < anfdmax; ++fd) |
… | |
… | |
1056 | if (!fd_valid (fd) && errno == EBADF) |
1528 | if (!fd_valid (fd) && errno == EBADF) |
1057 | fd_kill (EV_A_ fd); |
1529 | fd_kill (EV_A_ fd); |
1058 | } |
1530 | } |
1059 | |
1531 | |
1060 | /* called on ENOMEM in select/poll to kill some fds and retry */ |
1532 | /* called on ENOMEM in select/poll to kill some fds and retry */ |
1061 | static void noinline |
1533 | static void noinline ecb_cold |
1062 | fd_enomem (EV_P) |
1534 | fd_enomem (EV_P) |
1063 | { |
1535 | { |
1064 | int fd; |
1536 | int fd; |
1065 | |
1537 | |
1066 | for (fd = anfdmax; fd--; ) |
1538 | for (fd = anfdmax; fd--; ) |
… | |
… | |
1261 | |
1733 | |
1262 | /*****************************************************************************/ |
1734 | /*****************************************************************************/ |
1263 | |
1735 | |
1264 | #if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE |
1736 | #if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE |
1265 | |
1737 | |
1266 | static void noinline |
1738 | static void noinline ecb_cold |
1267 | evpipe_init (EV_P) |
1739 | evpipe_init (EV_P) |
1268 | { |
1740 | { |
1269 | if (!ev_is_active (&pipe_w)) |
1741 | if (!ev_is_active (&pipe_w)) |
1270 | { |
1742 | { |
1271 | # if EV_USE_EVENTFD |
1743 | # if EV_USE_EVENTFD |
… | |
… | |
1293 | ev_io_start (EV_A_ &pipe_w); |
1765 | ev_io_start (EV_A_ &pipe_w); |
1294 | ev_unref (EV_A); /* watcher should not keep loop alive */ |
1766 | ev_unref (EV_A); /* watcher should not keep loop alive */ |
1295 | } |
1767 | } |
1296 | } |
1768 | } |
1297 | |
1769 | |
1298 | inline_size void |
1770 | inline_speed void |
1299 | evpipe_write (EV_P_ EV_ATOMIC_T *flag) |
1771 | evpipe_write (EV_P_ EV_ATOMIC_T *flag) |
1300 | { |
1772 | { |
1301 | if (!*flag) |
1773 | if (expect_true (*flag)) |
|
|
1774 | return; |
|
|
1775 | |
|
|
1776 | *flag = 1; |
|
|
1777 | |
|
|
1778 | ECB_MEMORY_FENCE_RELEASE; /* make sure flag is visible before the wakeup */ |
|
|
1779 | |
|
|
1780 | pipe_write_skipped = 1; |
|
|
1781 | |
|
|
1782 | ECB_MEMORY_FENCE; /* make sure pipe_write_skipped is visible before we check pipe_write_wanted */ |
|
|
1783 | |
|
|
1784 | if (pipe_write_wanted) |
1302 | { |
1785 | { |
|
|
1786 | int old_errno; |
|
|
1787 | |
|
|
1788 | pipe_write_skipped = 0; /* just an optimisation, no fence needed */ |
|
|
1789 | |
1303 | int old_errno = errno; /* save errno because write might clobber it */ |
1790 | old_errno = errno; /* save errno because write will clobber it */ |
1304 | char dummy; |
|
|
1305 | |
|
|
1306 | *flag = 1; |
|
|
1307 | |
1791 | |
1308 | #if EV_USE_EVENTFD |
1792 | #if EV_USE_EVENTFD |
1309 | if (evfd >= 0) |
1793 | if (evfd >= 0) |
1310 | { |
1794 | { |
1311 | uint64_t counter = 1; |
1795 | uint64_t counter = 1; |
1312 | write (evfd, &counter, sizeof (uint64_t)); |
1796 | write (evfd, &counter, sizeof (uint64_t)); |
1313 | } |
1797 | } |
1314 | else |
1798 | else |
1315 | #endif |
1799 | #endif |
|
|
1800 | { |
1316 | /* win32 people keep sending patches that change this write() to send() */ |
1801 | /* win32 people keep sending patches that change this write() to send() */ |
1317 | /* and then run away. but send() is wrong, it wants a socket handle on win32 */ |
1802 | /* and then run away. but send() is wrong, it wants a socket handle on win32 */ |
1318 | /* so when you think this write should be a send instead, please find out */ |
1803 | /* so when you think this write should be a send instead, please find out */ |
1319 | /* where your send() is from - it's definitely not the microsoft send, and */ |
1804 | /* where your send() is from - it's definitely not the microsoft send, and */ |
1320 | /* tell me. thank you. */ |
1805 | /* tell me. thank you. */ |
1321 | write (evpipe [1], &dummy, 1); |
1806 | write (evpipe [1], &(evpipe [1]), 1); |
|
|
1807 | } |
1322 | |
1808 | |
1323 | errno = old_errno; |
1809 | errno = old_errno; |
1324 | } |
1810 | } |
1325 | } |
1811 | } |
1326 | |
1812 | |
… | |
… | |
1329 | static void |
1815 | static void |
1330 | pipecb (EV_P_ ev_io *iow, int revents) |
1816 | pipecb (EV_P_ ev_io *iow, int revents) |
1331 | { |
1817 | { |
1332 | int i; |
1818 | int i; |
1333 | |
1819 | |
|
|
1820 | if (revents & EV_READ) |
|
|
1821 | { |
1334 | #if EV_USE_EVENTFD |
1822 | #if EV_USE_EVENTFD |
1335 | if (evfd >= 0) |
1823 | if (evfd >= 0) |
1336 | { |
1824 | { |
1337 | uint64_t counter; |
1825 | uint64_t counter; |
1338 | read (evfd, &counter, sizeof (uint64_t)); |
1826 | read (evfd, &counter, sizeof (uint64_t)); |
1339 | } |
1827 | } |
1340 | else |
1828 | else |
1341 | #endif |
1829 | #endif |
1342 | { |
1830 | { |
1343 | char dummy; |
1831 | char dummy; |
1344 | /* see discussion in evpipe_write when you think this read should be recv in win32 */ |
1832 | /* see discussion in evpipe_write when you think this read should be recv in win32 */ |
1345 | read (evpipe [0], &dummy, 1); |
1833 | read (evpipe [0], &dummy, 1); |
|
|
1834 | } |
1346 | } |
1835 | } |
1347 | |
1836 | |
|
|
1837 | pipe_write_skipped = 0; |
|
|
1838 | |
|
|
1839 | #if EV_SIGNAL_ENABLE |
1348 | if (sig_pending) |
1840 | if (sig_pending) |
1349 | { |
1841 | { |
1350 | sig_pending = 0; |
1842 | sig_pending = 0; |
1351 | |
1843 | |
1352 | for (i = EV_NSIG - 1; i--; ) |
1844 | for (i = EV_NSIG - 1; i--; ) |
1353 | if (expect_false (signals [i].pending)) |
1845 | if (expect_false (signals [i].pending)) |
1354 | ev_feed_signal_event (EV_A_ i + 1); |
1846 | ev_feed_signal_event (EV_A_ i + 1); |
1355 | } |
1847 | } |
|
|
1848 | #endif |
1356 | |
1849 | |
1357 | #if EV_ASYNC_ENABLE |
1850 | #if EV_ASYNC_ENABLE |
1358 | if (async_pending) |
1851 | if (async_pending) |
1359 | { |
1852 | { |
1360 | async_pending = 0; |
1853 | async_pending = 0; |
… | |
… | |
1378 | EV_P = signals [signum - 1].loop; |
1871 | EV_P = signals [signum - 1].loop; |
1379 | |
1872 | |
1380 | if (!EV_A) |
1873 | if (!EV_A) |
1381 | return; |
1874 | return; |
1382 | #endif |
1875 | #endif |
|
|
1876 | |
|
|
1877 | if (!ev_active (&pipe_w)) |
|
|
1878 | return; |
1383 | |
1879 | |
1384 | signals [signum - 1].pending = 1; |
1880 | signals [signum - 1].pending = 1; |
1385 | evpipe_write (EV_A_ &sig_pending); |
1881 | evpipe_write (EV_A_ &sig_pending); |
1386 | } |
1882 | } |
1387 | |
1883 | |
… | |
… | |
1519 | #endif |
2015 | #endif |
1520 | #if EV_USE_SELECT |
2016 | #if EV_USE_SELECT |
1521 | # include "ev_select.c" |
2017 | # include "ev_select.c" |
1522 | #endif |
2018 | #endif |
1523 | |
2019 | |
1524 | int |
2020 | int ecb_cold |
1525 | ev_version_major (void) |
2021 | ev_version_major (void) |
1526 | { |
2022 | { |
1527 | return EV_VERSION_MAJOR; |
2023 | return EV_VERSION_MAJOR; |
1528 | } |
2024 | } |
1529 | |
2025 | |
1530 | int |
2026 | int ecb_cold |
1531 | ev_version_minor (void) |
2027 | ev_version_minor (void) |
1532 | { |
2028 | { |
1533 | return EV_VERSION_MINOR; |
2029 | return EV_VERSION_MINOR; |
1534 | } |
2030 | } |
1535 | |
2031 | |
1536 | /* return true if we are running with elevated privileges and should ignore env variables */ |
2032 | /* return true if we are running with elevated privileges and should ignore env variables */ |
1537 | int inline_size |
2033 | int inline_size ecb_cold |
1538 | enable_secure (void) |
2034 | enable_secure (void) |
1539 | { |
2035 | { |
1540 | #ifdef _WIN32 |
2036 | #ifdef _WIN32 |
1541 | return 0; |
2037 | return 0; |
1542 | #else |
2038 | #else |
1543 | return getuid () != geteuid () |
2039 | return getuid () != geteuid () |
1544 | || getgid () != getegid (); |
2040 | || getgid () != getegid (); |
1545 | #endif |
2041 | #endif |
1546 | } |
2042 | } |
1547 | |
2043 | |
1548 | unsigned int |
2044 | unsigned int ecb_cold |
1549 | ev_supported_backends (void) |
2045 | ev_supported_backends (void) |
1550 | { |
2046 | { |
1551 | unsigned int flags = 0; |
2047 | unsigned int flags = 0; |
1552 | |
2048 | |
1553 | if (EV_USE_PORT ) flags |= EVBACKEND_PORT; |
2049 | if (EV_USE_PORT ) flags |= EVBACKEND_PORT; |
… | |
… | |
1557 | if (EV_USE_SELECT) flags |= EVBACKEND_SELECT; |
2053 | if (EV_USE_SELECT) flags |= EVBACKEND_SELECT; |
1558 | |
2054 | |
1559 | return flags; |
2055 | return flags; |
1560 | } |
2056 | } |
1561 | |
2057 | |
1562 | unsigned int |
2058 | unsigned int ecb_cold |
1563 | ev_recommended_backends (void) |
2059 | ev_recommended_backends (void) |
1564 | { |
2060 | { |
1565 | unsigned int flags = ev_supported_backends (); |
2061 | unsigned int flags = ev_supported_backends (); |
1566 | |
2062 | |
1567 | #ifndef __NetBSD__ |
2063 | #ifndef __NetBSD__ |
… | |
… | |
1579 | #endif |
2075 | #endif |
1580 | |
2076 | |
1581 | return flags; |
2077 | return flags; |
1582 | } |
2078 | } |
1583 | |
2079 | |
1584 | unsigned int |
2080 | unsigned int ecb_cold |
1585 | ev_embeddable_backends (void) |
2081 | ev_embeddable_backends (void) |
1586 | { |
2082 | { |
1587 | int flags = EVBACKEND_EPOLL | EVBACKEND_KQUEUE | EVBACKEND_PORT; |
2083 | int flags = EVBACKEND_EPOLL | EVBACKEND_KQUEUE | EVBACKEND_PORT; |
1588 | |
2084 | |
1589 | /* epoll embeddability broken on all linux versions up to at least 2.6.23 */ |
2085 | /* epoll embeddability broken on all linux versions up to at least 2.6.23 */ |
… | |
… | |
1634 | ev_userdata (EV_P) |
2130 | ev_userdata (EV_P) |
1635 | { |
2131 | { |
1636 | return userdata; |
2132 | return userdata; |
1637 | } |
2133 | } |
1638 | |
2134 | |
|
|
2135 | void |
1639 | void ev_set_invoke_pending_cb (EV_P_ void (*invoke_pending_cb)(EV_P)) |
2136 | ev_set_invoke_pending_cb (EV_P_ void (*invoke_pending_cb)(EV_P)) |
1640 | { |
2137 | { |
1641 | invoke_cb = invoke_pending_cb; |
2138 | invoke_cb = invoke_pending_cb; |
1642 | } |
2139 | } |
1643 | |
2140 | |
|
|
2141 | void |
1644 | void ev_set_loop_release_cb (EV_P_ void (*release)(EV_P), void (*acquire)(EV_P)) |
2142 | ev_set_loop_release_cb (EV_P_ void (*release)(EV_P), void (*acquire)(EV_P)) |
1645 | { |
2143 | { |
1646 | release_cb = release; |
2144 | release_cb = release; |
1647 | acquire_cb = acquire; |
2145 | acquire_cb = acquire; |
1648 | } |
2146 | } |
1649 | #endif |
2147 | #endif |
1650 | |
2148 | |
1651 | /* initialise a loop structure, must be zero-initialised */ |
2149 | /* initialise a loop structure, must be zero-initialised */ |
1652 | static void noinline |
2150 | static void noinline ecb_cold |
1653 | loop_init (EV_P_ unsigned int flags) |
2151 | loop_init (EV_P_ unsigned int flags) |
1654 | { |
2152 | { |
1655 | if (!backend) |
2153 | if (!backend) |
1656 | { |
2154 | { |
1657 | origflags = flags; |
2155 | origflags = flags; |
… | |
… | |
1685 | if (!(flags & EVFLAG_NOENV) |
2183 | if (!(flags & EVFLAG_NOENV) |
1686 | && !enable_secure () |
2184 | && !enable_secure () |
1687 | && getenv ("LIBEV_FLAGS")) |
2185 | && getenv ("LIBEV_FLAGS")) |
1688 | flags = atoi (getenv ("LIBEV_FLAGS")); |
2186 | flags = atoi (getenv ("LIBEV_FLAGS")); |
1689 | |
2187 | |
1690 | ev_rt_now = ev_time (); |
2188 | ev_rt_now = ev_time (); |
1691 | mn_now = get_clock (); |
2189 | mn_now = get_clock (); |
1692 | now_floor = mn_now; |
2190 | now_floor = mn_now; |
1693 | rtmn_diff = ev_rt_now - mn_now; |
2191 | rtmn_diff = ev_rt_now - mn_now; |
1694 | #if EV_FEATURE_API |
2192 | #if EV_FEATURE_API |
1695 | invoke_cb = ev_invoke_pending; |
2193 | invoke_cb = ev_invoke_pending; |
1696 | #endif |
2194 | #endif |
1697 | |
2195 | |
1698 | io_blocktime = 0.; |
2196 | io_blocktime = 0.; |
1699 | timeout_blocktime = 0.; |
2197 | timeout_blocktime = 0.; |
1700 | backend = 0; |
2198 | backend = 0; |
1701 | backend_fd = -1; |
2199 | backend_fd = -1; |
1702 | sig_pending = 0; |
2200 | sig_pending = 0; |
1703 | #if EV_ASYNC_ENABLE |
2201 | #if EV_ASYNC_ENABLE |
1704 | async_pending = 0; |
2202 | async_pending = 0; |
1705 | #endif |
2203 | #endif |
|
|
2204 | pipe_write_skipped = 0; |
|
|
2205 | pipe_write_wanted = 0; |
1706 | #if EV_USE_INOTIFY |
2206 | #if EV_USE_INOTIFY |
1707 | fs_fd = flags & EVFLAG_NOINOTIFY ? -1 : -2; |
2207 | fs_fd = flags & EVFLAG_NOINOTIFY ? -1 : -2; |
1708 | #endif |
2208 | #endif |
1709 | #if EV_USE_SIGNALFD |
2209 | #if EV_USE_SIGNALFD |
1710 | sigfd = flags & EVFLAG_SIGNALFD ? -2 : -1; |
2210 | sigfd = flags & EVFLAG_SIGNALFD ? -2 : -1; |
1711 | #endif |
2211 | #endif |
1712 | |
2212 | |
1713 | if (!(flags & EVBACKEND_MASK)) |
2213 | if (!(flags & EVBACKEND_MASK)) |
1714 | flags |= ev_recommended_backends (); |
2214 | flags |= ev_recommended_backends (); |
1715 | |
2215 | |
… | |
… | |
1740 | #endif |
2240 | #endif |
1741 | } |
2241 | } |
1742 | } |
2242 | } |
1743 | |
2243 | |
1744 | /* free up a loop structure */ |
2244 | /* free up a loop structure */ |
1745 | void |
2245 | void ecb_cold |
1746 | ev_loop_destroy (EV_P) |
2246 | ev_loop_destroy (EV_P) |
1747 | { |
2247 | { |
1748 | int i; |
2248 | int i; |
1749 | |
2249 | |
1750 | #if EV_MULTIPLICITY |
2250 | #if EV_MULTIPLICITY |
… | |
… | |
1880 | infy_fork (EV_A); |
2380 | infy_fork (EV_A); |
1881 | #endif |
2381 | #endif |
1882 | |
2382 | |
1883 | if (ev_is_active (&pipe_w)) |
2383 | if (ev_is_active (&pipe_w)) |
1884 | { |
2384 | { |
1885 | /* this "locks" the handlers against writing to the pipe */ |
2385 | /* pipe_write_wanted must be false now, so modifying fd vars should be safe */ |
1886 | /* while we modify the fd vars */ |
|
|
1887 | sig_pending = 1; |
|
|
1888 | #if EV_ASYNC_ENABLE |
|
|
1889 | async_pending = 1; |
|
|
1890 | #endif |
|
|
1891 | |
2386 | |
1892 | ev_ref (EV_A); |
2387 | ev_ref (EV_A); |
1893 | ev_io_stop (EV_A_ &pipe_w); |
2388 | ev_io_stop (EV_A_ &pipe_w); |
1894 | |
2389 | |
1895 | #if EV_USE_EVENTFD |
2390 | #if EV_USE_EVENTFD |
… | |
… | |
1913 | postfork = 0; |
2408 | postfork = 0; |
1914 | } |
2409 | } |
1915 | |
2410 | |
1916 | #if EV_MULTIPLICITY |
2411 | #if EV_MULTIPLICITY |
1917 | |
2412 | |
1918 | struct ev_loop * |
2413 | struct ev_loop * ecb_cold |
1919 | ev_loop_new (unsigned int flags) |
2414 | ev_loop_new (unsigned int flags) |
1920 | { |
2415 | { |
1921 | EV_P = (struct ev_loop *)ev_malloc (sizeof (struct ev_loop)); |
2416 | EV_P = (struct ev_loop *)ev_malloc (sizeof (struct ev_loop)); |
1922 | |
2417 | |
1923 | memset (EV_A, 0, sizeof (struct ev_loop)); |
2418 | memset (EV_A, 0, sizeof (struct ev_loop)); |
… | |
… | |
1931 | } |
2426 | } |
1932 | |
2427 | |
1933 | #endif /* multiplicity */ |
2428 | #endif /* multiplicity */ |
1934 | |
2429 | |
1935 | #if EV_VERIFY |
2430 | #if EV_VERIFY |
1936 | static void noinline |
2431 | static void noinline ecb_cold |
1937 | verify_watcher (EV_P_ W w) |
2432 | verify_watcher (EV_P_ W w) |
1938 | { |
2433 | { |
1939 | assert (("libev: watcher has invalid priority", ABSPRI (w) >= 0 && ABSPRI (w) < NUMPRI)); |
2434 | assert (("libev: watcher has invalid priority", ABSPRI (w) >= 0 && ABSPRI (w) < NUMPRI)); |
1940 | |
2435 | |
1941 | if (w->pending) |
2436 | if (w->pending) |
1942 | assert (("libev: pending watcher not on pending queue", pendings [ABSPRI (w)][w->pending - 1].w == w)); |
2437 | assert (("libev: pending watcher not on pending queue", pendings [ABSPRI (w)][w->pending - 1].w == w)); |
1943 | } |
2438 | } |
1944 | |
2439 | |
1945 | static void noinline |
2440 | static void noinline ecb_cold |
1946 | verify_heap (EV_P_ ANHE *heap, int N) |
2441 | verify_heap (EV_P_ ANHE *heap, int N) |
1947 | { |
2442 | { |
1948 | int i; |
2443 | int i; |
1949 | |
2444 | |
1950 | for (i = HEAP0; i < N + HEAP0; ++i) |
2445 | for (i = HEAP0; i < N + HEAP0; ++i) |
… | |
… | |
1955 | |
2450 | |
1956 | verify_watcher (EV_A_ (W)ANHE_w (heap [i])); |
2451 | verify_watcher (EV_A_ (W)ANHE_w (heap [i])); |
1957 | } |
2452 | } |
1958 | } |
2453 | } |
1959 | |
2454 | |
1960 | static void noinline |
2455 | static void noinline ecb_cold |
1961 | array_verify (EV_P_ W *ws, int cnt) |
2456 | array_verify (EV_P_ W *ws, int cnt) |
1962 | { |
2457 | { |
1963 | while (cnt--) |
2458 | while (cnt--) |
1964 | { |
2459 | { |
1965 | assert (("libev: active index mismatch", ev_active (ws [cnt]) == cnt + 1)); |
2460 | assert (("libev: active index mismatch", ev_active (ws [cnt]) == cnt + 1)); |
… | |
… | |
1967 | } |
2462 | } |
1968 | } |
2463 | } |
1969 | #endif |
2464 | #endif |
1970 | |
2465 | |
1971 | #if EV_FEATURE_API |
2466 | #if EV_FEATURE_API |
1972 | void |
2467 | void ecb_cold |
1973 | ev_verify (EV_P) |
2468 | ev_verify (EV_P) |
1974 | { |
2469 | { |
1975 | #if EV_VERIFY |
2470 | #if EV_VERIFY |
1976 | int i; |
2471 | int i; |
1977 | WL w; |
2472 | WL w; |
… | |
… | |
2043 | #endif |
2538 | #endif |
2044 | } |
2539 | } |
2045 | #endif |
2540 | #endif |
2046 | |
2541 | |
2047 | #if EV_MULTIPLICITY |
2542 | #if EV_MULTIPLICITY |
2048 | struct ev_loop * |
2543 | struct ev_loop * ecb_cold |
2049 | #else |
2544 | #else |
2050 | int |
2545 | int |
2051 | #endif |
2546 | #endif |
2052 | ev_default_loop (unsigned int flags) |
2547 | ev_default_loop (unsigned int flags) |
2053 | { |
2548 | { |
… | |
… | |
2181 | feed_reverse_done (EV_A_ EV_TIMER); |
2676 | feed_reverse_done (EV_A_ EV_TIMER); |
2182 | } |
2677 | } |
2183 | } |
2678 | } |
2184 | |
2679 | |
2185 | #if EV_PERIODIC_ENABLE |
2680 | #if EV_PERIODIC_ENABLE |
|
|
2681 | |
|
|
2682 | static void noinline |
|
|
2683 | periodic_recalc (EV_P_ ev_periodic *w) |
|
|
2684 | { |
|
|
2685 | ev_tstamp interval = w->interval > MIN_INTERVAL ? w->interval : MIN_INTERVAL; |
|
|
2686 | ev_tstamp at = w->offset + interval * ev_floor ((ev_rt_now - w->offset) / interval); |
|
|
2687 | |
|
|
2688 | /* the above almost always errs on the low side */ |
|
|
2689 | while (at <= ev_rt_now) |
|
|
2690 | { |
|
|
2691 | ev_tstamp nat = at + w->interval; |
|
|
2692 | |
|
|
2693 | /* when resolution fails us, we use ev_rt_now */ |
|
|
2694 | if (expect_false (nat == at)) |
|
|
2695 | { |
|
|
2696 | at = ev_rt_now; |
|
|
2697 | break; |
|
|
2698 | } |
|
|
2699 | |
|
|
2700 | at = nat; |
|
|
2701 | } |
|
|
2702 | |
|
|
2703 | ev_at (w) = at; |
|
|
2704 | } |
|
|
2705 | |
2186 | /* make periodics pending */ |
2706 | /* make periodics pending */ |
2187 | inline_size void |
2707 | inline_size void |
2188 | periodics_reify (EV_P) |
2708 | periodics_reify (EV_P) |
2189 | { |
2709 | { |
2190 | EV_FREQUENT_CHECK; |
2710 | EV_FREQUENT_CHECK; |
… | |
… | |
2209 | ANHE_at_cache (periodics [HEAP0]); |
2729 | ANHE_at_cache (periodics [HEAP0]); |
2210 | downheap (periodics, periodiccnt, HEAP0); |
2730 | downheap (periodics, periodiccnt, HEAP0); |
2211 | } |
2731 | } |
2212 | else if (w->interval) |
2732 | else if (w->interval) |
2213 | { |
2733 | { |
2214 | ev_at (w) = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval; |
2734 | periodic_recalc (EV_A_ w); |
2215 | /* if next trigger time is not sufficiently in the future, put it there */ |
|
|
2216 | /* this might happen because of floating point inexactness */ |
|
|
2217 | if (ev_at (w) - ev_rt_now < TIME_EPSILON) |
|
|
2218 | { |
|
|
2219 | ev_at (w) += w->interval; |
|
|
2220 | |
|
|
2221 | /* if interval is unreasonably low we might still have a time in the past */ |
|
|
2222 | /* so correct this. this will make the periodic very inexact, but the user */ |
|
|
2223 | /* has effectively asked to get triggered more often than possible */ |
|
|
2224 | if (ev_at (w) < ev_rt_now) |
|
|
2225 | ev_at (w) = ev_rt_now; |
|
|
2226 | } |
|
|
2227 | |
|
|
2228 | ANHE_at_cache (periodics [HEAP0]); |
2735 | ANHE_at_cache (periodics [HEAP0]); |
2229 | downheap (periodics, periodiccnt, HEAP0); |
2736 | downheap (periodics, periodiccnt, HEAP0); |
2230 | } |
2737 | } |
2231 | else |
2738 | else |
2232 | ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */ |
2739 | ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */ |
… | |
… | |
2240 | } |
2747 | } |
2241 | } |
2748 | } |
2242 | |
2749 | |
2243 | /* simply recalculate all periodics */ |
2750 | /* simply recalculate all periodics */ |
2244 | /* TODO: maybe ensure that at least one event happens when jumping forward? */ |
2751 | /* TODO: maybe ensure that at least one event happens when jumping forward? */ |
2245 | static void noinline |
2752 | static void noinline ecb_cold |
2246 | periodics_reschedule (EV_P) |
2753 | periodics_reschedule (EV_P) |
2247 | { |
2754 | { |
2248 | int i; |
2755 | int i; |
2249 | |
2756 | |
2250 | /* adjust periodics after time jump */ |
2757 | /* adjust periodics after time jump */ |
… | |
… | |
2253 | ev_periodic *w = (ev_periodic *)ANHE_w (periodics [i]); |
2760 | ev_periodic *w = (ev_periodic *)ANHE_w (periodics [i]); |
2254 | |
2761 | |
2255 | if (w->reschedule_cb) |
2762 | if (w->reschedule_cb) |
2256 | ev_at (w) = w->reschedule_cb (w, ev_rt_now); |
2763 | ev_at (w) = w->reschedule_cb (w, ev_rt_now); |
2257 | else if (w->interval) |
2764 | else if (w->interval) |
2258 | ev_at (w) = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval; |
2765 | periodic_recalc (EV_A_ w); |
2259 | |
2766 | |
2260 | ANHE_at_cache (periodics [i]); |
2767 | ANHE_at_cache (periodics [i]); |
2261 | } |
2768 | } |
2262 | |
2769 | |
2263 | reheap (periodics, periodiccnt); |
2770 | reheap (periodics, periodiccnt); |
2264 | } |
2771 | } |
2265 | #endif |
2772 | #endif |
2266 | |
2773 | |
2267 | /* adjust all timers by a given offset */ |
2774 | /* adjust all timers by a given offset */ |
2268 | static void noinline |
2775 | static void noinline ecb_cold |
2269 | timers_reschedule (EV_P_ ev_tstamp adjust) |
2776 | timers_reschedule (EV_P_ ev_tstamp adjust) |
2270 | { |
2777 | { |
2271 | int i; |
2778 | int i; |
2272 | |
2779 | |
2273 | for (i = 0; i < timercnt; ++i) |
2780 | for (i = 0; i < timercnt; ++i) |
… | |
… | |
2310 | * doesn't hurt either as we only do this on time-jumps or |
2817 | * doesn't hurt either as we only do this on time-jumps or |
2311 | * in the unlikely event of having been preempted here. |
2818 | * in the unlikely event of having been preempted here. |
2312 | */ |
2819 | */ |
2313 | for (i = 4; --i; ) |
2820 | for (i = 4; --i; ) |
2314 | { |
2821 | { |
|
|
2822 | ev_tstamp diff; |
2315 | rtmn_diff = ev_rt_now - mn_now; |
2823 | rtmn_diff = ev_rt_now - mn_now; |
2316 | |
2824 | |
|
|
2825 | diff = odiff - rtmn_diff; |
|
|
2826 | |
2317 | if (expect_true (fabs (odiff - rtmn_diff) < MIN_TIMEJUMP)) |
2827 | if (expect_true ((diff < 0. ? -diff : diff) < MIN_TIMEJUMP)) |
2318 | return; /* all is well */ |
2828 | return; /* all is well */ |
2319 | |
2829 | |
2320 | ev_rt_now = ev_time (); |
2830 | ev_rt_now = ev_time (); |
2321 | mn_now = get_clock (); |
2831 | mn_now = get_clock (); |
2322 | now_floor = mn_now; |
2832 | now_floor = mn_now; |
… | |
… | |
2412 | ev_tstamp prev_mn_now = mn_now; |
2922 | ev_tstamp prev_mn_now = mn_now; |
2413 | |
2923 | |
2414 | /* update time to cancel out callback processing overhead */ |
2924 | /* update time to cancel out callback processing overhead */ |
2415 | time_update (EV_A_ 1e100); |
2925 | time_update (EV_A_ 1e100); |
2416 | |
2926 | |
|
|
2927 | /* from now on, we want a pipe-wake-up */ |
|
|
2928 | pipe_write_wanted = 1; |
|
|
2929 | |
|
|
2930 | ECB_MEMORY_FENCE; /* make sure pipe_write_wanted is visible before we check for potential skips */ |
|
|
2931 | |
2417 | if (expect_true (!(flags & EVRUN_NOWAIT || idleall || !activecnt))) |
2932 | if (expect_true (!(flags & EVRUN_NOWAIT || idleall || !activecnt || pipe_write_skipped))) |
2418 | { |
2933 | { |
2419 | waittime = MAX_BLOCKTIME; |
2934 | waittime = MAX_BLOCKTIME; |
2420 | |
2935 | |
2421 | if (timercnt) |
2936 | if (timercnt) |
2422 | { |
2937 | { |
2423 | ev_tstamp to = ANHE_at (timers [HEAP0]) - mn_now + backend_fudge; |
2938 | ev_tstamp to = ANHE_at (timers [HEAP0]) - mn_now; |
2424 | if (waittime > to) waittime = to; |
2939 | if (waittime > to) waittime = to; |
2425 | } |
2940 | } |
2426 | |
2941 | |
2427 | #if EV_PERIODIC_ENABLE |
2942 | #if EV_PERIODIC_ENABLE |
2428 | if (periodiccnt) |
2943 | if (periodiccnt) |
2429 | { |
2944 | { |
2430 | ev_tstamp to = ANHE_at (periodics [HEAP0]) - ev_rt_now + backend_fudge; |
2945 | ev_tstamp to = ANHE_at (periodics [HEAP0]) - ev_rt_now; |
2431 | if (waittime > to) waittime = to; |
2946 | if (waittime > to) waittime = to; |
2432 | } |
2947 | } |
2433 | #endif |
2948 | #endif |
2434 | |
2949 | |
2435 | /* don't let timeouts decrease the waittime below timeout_blocktime */ |
2950 | /* don't let timeouts decrease the waittime below timeout_blocktime */ |
2436 | if (expect_false (waittime < timeout_blocktime)) |
2951 | if (expect_false (waittime < timeout_blocktime)) |
2437 | waittime = timeout_blocktime; |
2952 | waittime = timeout_blocktime; |
|
|
2953 | |
|
|
2954 | /* at this point, we NEED to wait, so we have to ensure */ |
|
|
2955 | /* to pass a minimum nonzero value to the backend */ |
|
|
2956 | if (expect_false (waittime < backend_mintime)) |
|
|
2957 | waittime = backend_mintime; |
2438 | |
2958 | |
2439 | /* extra check because io_blocktime is commonly 0 */ |
2959 | /* extra check because io_blocktime is commonly 0 */ |
2440 | if (expect_false (io_blocktime)) |
2960 | if (expect_false (io_blocktime)) |
2441 | { |
2961 | { |
2442 | sleeptime = io_blocktime - (mn_now - prev_mn_now); |
2962 | sleeptime = io_blocktime - (mn_now - prev_mn_now); |
2443 | |
2963 | |
2444 | if (sleeptime > waittime - backend_fudge) |
2964 | if (sleeptime > waittime - backend_mintime) |
2445 | sleeptime = waittime - backend_fudge; |
2965 | sleeptime = waittime - backend_mintime; |
2446 | |
2966 | |
2447 | if (expect_true (sleeptime > 0.)) |
2967 | if (expect_true (sleeptime > 0.)) |
2448 | { |
2968 | { |
2449 | ev_sleep (sleeptime); |
2969 | ev_sleep (sleeptime); |
2450 | waittime -= sleeptime; |
2970 | waittime -= sleeptime; |
… | |
… | |
2456 | ++loop_count; |
2976 | ++loop_count; |
2457 | #endif |
2977 | #endif |
2458 | assert ((loop_done = EVBREAK_RECURSE, 1)); /* assert for side effect */ |
2978 | assert ((loop_done = EVBREAK_RECURSE, 1)); /* assert for side effect */ |
2459 | backend_poll (EV_A_ waittime); |
2979 | backend_poll (EV_A_ waittime); |
2460 | assert ((loop_done = EVBREAK_CANCEL, 1)); /* assert for side effect */ |
2980 | assert ((loop_done = EVBREAK_CANCEL, 1)); /* assert for side effect */ |
|
|
2981 | |
|
|
2982 | pipe_write_wanted = 0; /* just an optimsiation, no fence needed */ |
|
|
2983 | |
|
|
2984 | if (pipe_write_skipped) |
|
|
2985 | { |
|
|
2986 | assert (("libev: pipe_w not active, but pipe not written", ev_is_active (&pipe_w))); |
|
|
2987 | ev_feed_event (EV_A_ &pipe_w, EV_CUSTOM); |
|
|
2988 | } |
|
|
2989 | |
2461 | |
2990 | |
2462 | /* update ev_rt_now, do magic */ |
2991 | /* update ev_rt_now, do magic */ |
2463 | time_update (EV_A_ waittime + sleeptime); |
2992 | time_update (EV_A_ waittime + sleeptime); |
2464 | } |
2993 | } |
2465 | |
2994 | |
… | |
… | |
2755 | if (w->reschedule_cb) |
3284 | if (w->reschedule_cb) |
2756 | ev_at (w) = w->reschedule_cb (w, ev_rt_now); |
3285 | ev_at (w) = w->reschedule_cb (w, ev_rt_now); |
2757 | else if (w->interval) |
3286 | else if (w->interval) |
2758 | { |
3287 | { |
2759 | assert (("libev: ev_periodic_start called with negative interval value", w->interval >= 0.)); |
3288 | assert (("libev: ev_periodic_start called with negative interval value", w->interval >= 0.)); |
2760 | /* this formula differs from the one in periodic_reify because we do not always round up */ |
3289 | periodic_recalc (EV_A_ w); |
2761 | ev_at (w) = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval; |
|
|
2762 | } |
3290 | } |
2763 | else |
3291 | else |
2764 | ev_at (w) = w->offset; |
3292 | ev_at (w) = w->offset; |
2765 | |
3293 | |
2766 | EV_FREQUENT_CHECK; |
3294 | EV_FREQUENT_CHECK; |
… | |
… | |
3043 | if (!pend || pend == path) |
3571 | if (!pend || pend == path) |
3044 | break; |
3572 | break; |
3045 | |
3573 | |
3046 | *pend = 0; |
3574 | *pend = 0; |
3047 | w->wd = inotify_add_watch (fs_fd, path, mask); |
3575 | w->wd = inotify_add_watch (fs_fd, path, mask); |
3048 | } |
3576 | } |
3049 | while (w->wd < 0 && (errno == ENOENT || errno == EACCES)); |
3577 | while (w->wd < 0 && (errno == ENOENT || errno == EACCES)); |
3050 | } |
3578 | } |
3051 | } |
3579 | } |
3052 | |
3580 | |
3053 | if (w->wd >= 0) |
3581 | if (w->wd >= 0) |
… | |
… | |
3120 | infy_wd (EV_A_ ev->wd, ev->wd, ev); |
3648 | infy_wd (EV_A_ ev->wd, ev->wd, ev); |
3121 | ofs += sizeof (struct inotify_event) + ev->len; |
3649 | ofs += sizeof (struct inotify_event) + ev->len; |
3122 | } |
3650 | } |
3123 | } |
3651 | } |
3124 | |
3652 | |
3125 | inline_size void |
3653 | inline_size void ecb_cold |
3126 | ev_check_2625 (EV_P) |
3654 | ev_check_2625 (EV_P) |
3127 | { |
3655 | { |
3128 | /* kernels < 2.6.25 are borked |
3656 | /* kernels < 2.6.25 are borked |
3129 | * http://www.ussg.indiana.edu/hypermail/linux/kernel/0711.3/1208.html |
3657 | * http://www.ussg.indiana.edu/hypermail/linux/kernel/0711.3/1208.html |
3130 | */ |
3658 | */ |
… | |
… | |
3755 | } |
4283 | } |
3756 | |
4284 | |
3757 | /*****************************************************************************/ |
4285 | /*****************************************************************************/ |
3758 | |
4286 | |
3759 | #if EV_WALK_ENABLE |
4287 | #if EV_WALK_ENABLE |
3760 | void |
4288 | void ecb_cold |
3761 | ev_walk (EV_P_ int types, void (*cb)(EV_P_ int type, void *w)) |
4289 | ev_walk (EV_P_ int types, void (*cb)(EV_P_ int type, void *w)) |
3762 | { |
4290 | { |
3763 | int i, j; |
4291 | int i, j; |
3764 | ev_watcher_list *wl, *wn; |
4292 | ev_watcher_list *wl, *wn; |
3765 | |
4293 | |
… | |
… | |
3809 | cb (EV_A_ EV_PERIODIC, ANHE_w (periodics [i])); |
4337 | cb (EV_A_ EV_PERIODIC, ANHE_w (periodics [i])); |
3810 | #endif |
4338 | #endif |
3811 | |
4339 | |
3812 | #if EV_IDLE_ENABLE |
4340 | #if EV_IDLE_ENABLE |
3813 | if (types & EV_IDLE) |
4341 | if (types & EV_IDLE) |
3814 | for (j = NUMPRI; i--; ) |
4342 | for (j = NUMPRI; j--; ) |
3815 | for (i = idlecnt [j]; i--; ) |
4343 | for (i = idlecnt [j]; i--; ) |
3816 | cb (EV_A_ EV_IDLE, idles [j][i]); |
4344 | cb (EV_A_ EV_IDLE, idles [j][i]); |
3817 | #endif |
4345 | #endif |
3818 | |
4346 | |
3819 | #if EV_FORK_ENABLE |
4347 | #if EV_FORK_ENABLE |