… | |
… | |
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 |
… | |
… | |
443 | #else |
452 | #else |
444 | # define EV_FREQUENT_CHECK do { } while (0) |
453 | # define EV_FREQUENT_CHECK do { } while (0) |
445 | #endif |
454 | #endif |
446 | |
455 | |
447 | /* |
456 | /* |
448 | * This is used to avoid floating point rounding problems. |
457 | * This is used to work around floating point rounding problems. |
449 | * It is added to ev_rt_now when scheduling periodics |
|
|
450 | * to ensure progress, time-wise, even when rounding |
|
|
451 | * errors are against us. |
|
|
452 | * This value is good at least till the year 4000. |
458 | * This value is good at least till the year 4000. |
453 | * Better solutions welcome. |
|
|
454 | */ |
459 | */ |
455 | #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 */ |
456 | |
462 | |
457 | #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) */ |
458 | #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) */ |
459 | |
465 | |
460 | #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) |
461 | #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) |
462 | |
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; |
463 | #if __GNUC__ >= 4 |
510 | #if __GNUC__ |
464 | # define expect(expr,value) __builtin_expect ((expr),(value)) |
511 | typedef signed long long int64_t; |
465 | # 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 |
466 | #else |
517 | #else |
467 | # define expect(expr,value) (expr) |
518 | #include <inttypes.h> |
468 | # define noinline |
|
|
469 | # if __STDC_VERSION__ < 199901L && __GNUC__ < 2 |
|
|
470 | # define inline |
|
|
471 | # 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))) |
472 | #endif |
533 | #endif |
|
|
534 | #endif |
473 | |
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 __x86 |
|
|
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,c10,4" : : "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__ ("dsb" : : : "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. */ |
474 | #define expect_false(expr) expect ((expr) != 0, 0) |
678 | #define ecb_expect_false(expr) ecb_expect (!!(expr), 0) |
475 | #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 | # undef ECB_MEMORY_FENCE |
|
|
865 | # undef ECB_MEMORY_FENCE_ACQUIRE |
|
|
866 | # undef ECB_MEMORY_FENCE_RELEASE |
|
|
867 | #endif |
|
|
868 | |
|
|
869 | #define expect_false(cond) ecb_expect_false (cond) |
|
|
870 | #define expect_true(cond) ecb_expect_true (cond) |
|
|
871 | #define noinline ecb_noinline |
|
|
872 | |
476 | #define inline_size static inline |
873 | #define inline_size ecb_inline |
477 | |
874 | |
478 | #if EV_FEATURE_CODE |
875 | #if EV_FEATURE_CODE |
479 | # define inline_speed static inline |
876 | # define inline_speed ecb_inline |
480 | #else |
877 | #else |
481 | # define inline_speed static noinline |
878 | # define inline_speed static noinline |
482 | #endif |
879 | #endif |
483 | |
880 | |
484 | #define NUMPRI (EV_MAXPRI - EV_MINPRI + 1) |
881 | #define NUMPRI (EV_MAXPRI - EV_MINPRI + 1) |
… | |
… | |
523 | # include "ev_win32.c" |
920 | # include "ev_win32.c" |
524 | #endif |
921 | #endif |
525 | |
922 | |
526 | /*****************************************************************************/ |
923 | /*****************************************************************************/ |
527 | |
924 | |
|
|
925 | /* define a suitable floor function (only used by periodics atm) */ |
|
|
926 | |
|
|
927 | #if EV_USE_FLOOR |
|
|
928 | # include <math.h> |
|
|
929 | # define ev_floor(v) floor (v) |
|
|
930 | #else |
|
|
931 | |
|
|
932 | #include <float.h> |
|
|
933 | |
|
|
934 | /* a floor() replacement function, should be independent of ev_tstamp type */ |
|
|
935 | static ev_tstamp noinline |
|
|
936 | ev_floor (ev_tstamp v) |
|
|
937 | { |
|
|
938 | /* the choice of shift factor is not terribly important */ |
|
|
939 | #if FLT_RADIX != 2 /* assume FLT_RADIX == 10 */ |
|
|
940 | const ev_tstamp shift = sizeof (unsigned long) >= 8 ? 10000000000000000000. : 1000000000.; |
|
|
941 | #else |
|
|
942 | const ev_tstamp shift = sizeof (unsigned long) >= 8 ? 18446744073709551616. : 4294967296.; |
|
|
943 | #endif |
|
|
944 | |
|
|
945 | /* argument too large for an unsigned long? */ |
|
|
946 | if (expect_false (v >= shift)) |
|
|
947 | { |
|
|
948 | ev_tstamp f; |
|
|
949 | |
|
|
950 | if (v == v - 1.) |
|
|
951 | return v; /* very large number */ |
|
|
952 | |
|
|
953 | f = shift * ev_floor (v * (1. / shift)); |
|
|
954 | return f + ev_floor (v - f); |
|
|
955 | } |
|
|
956 | |
|
|
957 | /* special treatment for negative args? */ |
|
|
958 | if (expect_false (v < 0.)) |
|
|
959 | { |
|
|
960 | ev_tstamp f = -ev_floor (-v); |
|
|
961 | |
|
|
962 | return f - (f == v ? 0 : 1); |
|
|
963 | } |
|
|
964 | |
|
|
965 | /* fits into an unsigned long */ |
|
|
966 | return (unsigned long)v; |
|
|
967 | } |
|
|
968 | |
|
|
969 | #endif |
|
|
970 | |
|
|
971 | /*****************************************************************************/ |
|
|
972 | |
528 | #ifdef __linux |
973 | #ifdef __linux |
529 | # include <sys/utsname.h> |
974 | # include <sys/utsname.h> |
530 | #endif |
975 | #endif |
531 | |
976 | |
532 | static unsigned int noinline |
977 | static unsigned int noinline ecb_cold |
533 | ev_linux_version (void) |
978 | ev_linux_version (void) |
534 | { |
979 | { |
535 | #ifdef __linux |
980 | #ifdef __linux |
536 | unsigned int v = 0; |
981 | unsigned int v = 0; |
537 | struct utsname buf; |
982 | struct utsname buf; |
… | |
… | |
566 | } |
1011 | } |
567 | |
1012 | |
568 | /*****************************************************************************/ |
1013 | /*****************************************************************************/ |
569 | |
1014 | |
570 | #if EV_AVOID_STDIO |
1015 | #if EV_AVOID_STDIO |
571 | static void noinline |
1016 | static void noinline ecb_cold |
572 | ev_printerr (const char *msg) |
1017 | ev_printerr (const char *msg) |
573 | { |
1018 | { |
574 | write (STDERR_FILENO, msg, strlen (msg)); |
1019 | write (STDERR_FILENO, msg, strlen (msg)); |
575 | } |
1020 | } |
576 | #endif |
1021 | #endif |
577 | |
1022 | |
578 | static void (*syserr_cb)(const char *msg); |
1023 | static void (*syserr_cb)(const char *msg); |
579 | |
1024 | |
580 | void |
1025 | void ecb_cold |
581 | ev_set_syserr_cb (void (*cb)(const char *msg)) |
1026 | ev_set_syserr_cb (void (*cb)(const char *msg)) |
582 | { |
1027 | { |
583 | syserr_cb = cb; |
1028 | syserr_cb = cb; |
584 | } |
1029 | } |
585 | |
1030 | |
586 | static void noinline |
1031 | static void noinline ecb_cold |
587 | ev_syserr (const char *msg) |
1032 | ev_syserr (const char *msg) |
588 | { |
1033 | { |
589 | if (!msg) |
1034 | if (!msg) |
590 | msg = "(libev) system error"; |
1035 | msg = "(libev) system error"; |
591 | |
1036 | |
… | |
… | |
624 | #endif |
1069 | #endif |
625 | } |
1070 | } |
626 | |
1071 | |
627 | static void *(*alloc)(void *ptr, long size) = ev_realloc_emul; |
1072 | static void *(*alloc)(void *ptr, long size) = ev_realloc_emul; |
628 | |
1073 | |
629 | void |
1074 | void ecb_cold |
630 | ev_set_allocator (void *(*cb)(void *ptr, long size)) |
1075 | ev_set_allocator (void *(*cb)(void *ptr, long size)) |
631 | { |
1076 | { |
632 | alloc = cb; |
1077 | alloc = cb; |
633 | } |
1078 | } |
634 | |
1079 | |
… | |
… | |
816 | select (0, 0, 0, 0, &tv); |
1261 | select (0, 0, 0, 0, &tv); |
817 | #endif |
1262 | #endif |
818 | } |
1263 | } |
819 | } |
1264 | } |
820 | |
1265 | |
821 | inline_speed int |
|
|
822 | ev_timeout_to_ms (ev_tstamp timeout) |
|
|
823 | { |
|
|
824 | int ms = timeout * 1000. + .999999; |
|
|
825 | |
|
|
826 | return expect_true (ms) ? ms : timeout < 1e-6 ? 0 : 1; |
|
|
827 | } |
|
|
828 | |
|
|
829 | /*****************************************************************************/ |
1266 | /*****************************************************************************/ |
830 | |
1267 | |
831 | #define MALLOC_ROUND 4096 /* prefer to allocate in chunks of this size, must be 2**n and >> 4 longs */ |
1268 | #define MALLOC_ROUND 4096 /* prefer to allocate in chunks of this size, must be 2**n and >> 4 longs */ |
832 | |
1269 | |
833 | /* find a suitable new size for the given array, */ |
1270 | /* find a suitable new size for the given array, */ |
… | |
… | |
851 | } |
1288 | } |
852 | |
1289 | |
853 | return ncur; |
1290 | return ncur; |
854 | } |
1291 | } |
855 | |
1292 | |
856 | static noinline void * |
1293 | static void * noinline ecb_cold |
857 | array_realloc (int elem, void *base, int *cur, int cnt) |
1294 | array_realloc (int elem, void *base, int *cur, int cnt) |
858 | { |
1295 | { |
859 | *cur = array_nextsize (elem, *cur, cnt); |
1296 | *cur = array_nextsize (elem, *cur, cnt); |
860 | return ev_realloc (base, elem * *cur); |
1297 | return ev_realloc (base, elem * *cur); |
861 | } |
1298 | } |
… | |
… | |
864 | memset ((void *)(base), 0, sizeof (*(base)) * (count)) |
1301 | memset ((void *)(base), 0, sizeof (*(base)) * (count)) |
865 | |
1302 | |
866 | #define array_needsize(type,base,cur,cnt,init) \ |
1303 | #define array_needsize(type,base,cur,cnt,init) \ |
867 | if (expect_false ((cnt) > (cur))) \ |
1304 | if (expect_false ((cnt) > (cur))) \ |
868 | { \ |
1305 | { \ |
869 | int ocur_ = (cur); \ |
1306 | int ecb_unused ocur_ = (cur); \ |
870 | (base) = (type *)array_realloc \ |
1307 | (base) = (type *)array_realloc \ |
871 | (sizeof (type), (base), &(cur), (cnt)); \ |
1308 | (sizeof (type), (base), &(cur), (cnt)); \ |
872 | init ((base) + (ocur_), (cur) - ocur_); \ |
1309 | init ((base) + (ocur_), (cur) - ocur_); \ |
873 | } |
1310 | } |
874 | |
1311 | |
… | |
… | |
980 | for (i = 0; i < fdchangecnt; ++i) |
1417 | for (i = 0; i < fdchangecnt; ++i) |
981 | { |
1418 | { |
982 | int fd = fdchanges [i]; |
1419 | int fd = fdchanges [i]; |
983 | ANFD *anfd = anfds + fd; |
1420 | ANFD *anfd = anfds + fd; |
984 | |
1421 | |
985 | if (anfd->reify & EV__IOFDSET) |
1422 | if (anfd->reify & EV__IOFDSET && anfd->head) |
986 | { |
1423 | { |
987 | SOCKET handle = EV_FD_TO_WIN32_HANDLE (fd); |
1424 | SOCKET handle = EV_FD_TO_WIN32_HANDLE (fd); |
988 | |
1425 | |
989 | if (handle != anfd->handle) |
1426 | if (handle != anfd->handle) |
990 | { |
1427 | { |
… | |
… | |
1044 | fdchanges [fdchangecnt - 1] = fd; |
1481 | fdchanges [fdchangecnt - 1] = fd; |
1045 | } |
1482 | } |
1046 | } |
1483 | } |
1047 | |
1484 | |
1048 | /* the given fd is invalid/unusable, so make sure it doesn't hurt us anymore */ |
1485 | /* the given fd is invalid/unusable, so make sure it doesn't hurt us anymore */ |
1049 | inline_speed void |
1486 | inline_speed void ecb_cold |
1050 | fd_kill (EV_P_ int fd) |
1487 | fd_kill (EV_P_ int fd) |
1051 | { |
1488 | { |
1052 | ev_io *w; |
1489 | ev_io *w; |
1053 | |
1490 | |
1054 | while ((w = (ev_io *)anfds [fd].head)) |
1491 | while ((w = (ev_io *)anfds [fd].head)) |
… | |
… | |
1057 | ev_feed_event (EV_A_ (W)w, EV_ERROR | EV_READ | EV_WRITE); |
1494 | ev_feed_event (EV_A_ (W)w, EV_ERROR | EV_READ | EV_WRITE); |
1058 | } |
1495 | } |
1059 | } |
1496 | } |
1060 | |
1497 | |
1061 | /* check whether the given fd is actually valid, for error recovery */ |
1498 | /* check whether the given fd is actually valid, for error recovery */ |
1062 | inline_size int |
1499 | inline_size int ecb_cold |
1063 | fd_valid (int fd) |
1500 | fd_valid (int fd) |
1064 | { |
1501 | { |
1065 | #ifdef _WIN32 |
1502 | #ifdef _WIN32 |
1066 | return EV_FD_TO_WIN32_HANDLE (fd) != -1; |
1503 | return EV_FD_TO_WIN32_HANDLE (fd) != -1; |
1067 | #else |
1504 | #else |
1068 | return fcntl (fd, F_GETFD) != -1; |
1505 | return fcntl (fd, F_GETFD) != -1; |
1069 | #endif |
1506 | #endif |
1070 | } |
1507 | } |
1071 | |
1508 | |
1072 | /* called on EBADF to verify fds */ |
1509 | /* called on EBADF to verify fds */ |
1073 | static void noinline |
1510 | static void noinline ecb_cold |
1074 | fd_ebadf (EV_P) |
1511 | fd_ebadf (EV_P) |
1075 | { |
1512 | { |
1076 | int fd; |
1513 | int fd; |
1077 | |
1514 | |
1078 | for (fd = 0; fd < anfdmax; ++fd) |
1515 | for (fd = 0; fd < anfdmax; ++fd) |
… | |
… | |
1080 | if (!fd_valid (fd) && errno == EBADF) |
1517 | if (!fd_valid (fd) && errno == EBADF) |
1081 | fd_kill (EV_A_ fd); |
1518 | fd_kill (EV_A_ fd); |
1082 | } |
1519 | } |
1083 | |
1520 | |
1084 | /* called on ENOMEM in select/poll to kill some fds and retry */ |
1521 | /* called on ENOMEM in select/poll to kill some fds and retry */ |
1085 | static void noinline |
1522 | static void noinline ecb_cold |
1086 | fd_enomem (EV_P) |
1523 | fd_enomem (EV_P) |
1087 | { |
1524 | { |
1088 | int fd; |
1525 | int fd; |
1089 | |
1526 | |
1090 | for (fd = anfdmax; fd--; ) |
1527 | for (fd = anfdmax; fd--; ) |
… | |
… | |
1285 | |
1722 | |
1286 | /*****************************************************************************/ |
1723 | /*****************************************************************************/ |
1287 | |
1724 | |
1288 | #if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE |
1725 | #if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE |
1289 | |
1726 | |
1290 | static void noinline |
1727 | static void noinline ecb_cold |
1291 | evpipe_init (EV_P) |
1728 | evpipe_init (EV_P) |
1292 | { |
1729 | { |
1293 | if (!ev_is_active (&pipe_w)) |
1730 | if (!ev_is_active (&pipe_w)) |
1294 | { |
1731 | { |
1295 | # if EV_USE_EVENTFD |
1732 | # if EV_USE_EVENTFD |
… | |
… | |
1317 | ev_io_start (EV_A_ &pipe_w); |
1754 | ev_io_start (EV_A_ &pipe_w); |
1318 | ev_unref (EV_A); /* watcher should not keep loop alive */ |
1755 | ev_unref (EV_A); /* watcher should not keep loop alive */ |
1319 | } |
1756 | } |
1320 | } |
1757 | } |
1321 | |
1758 | |
1322 | inline_size void |
1759 | inline_speed void |
1323 | evpipe_write (EV_P_ EV_ATOMIC_T *flag) |
1760 | evpipe_write (EV_P_ EV_ATOMIC_T *flag) |
1324 | { |
1761 | { |
1325 | if (!*flag) |
1762 | if (expect_true (*flag)) |
|
|
1763 | return; |
|
|
1764 | |
|
|
1765 | *flag = 1; |
|
|
1766 | |
|
|
1767 | ECB_MEMORY_FENCE_RELEASE; /* make sure flag is visible before the wakeup */ |
|
|
1768 | |
|
|
1769 | pipe_write_skipped = 1; |
|
|
1770 | |
|
|
1771 | ECB_MEMORY_FENCE; /* make sure pipe_write_skipped is visible before we check pipe_write_wanted */ |
|
|
1772 | |
|
|
1773 | if (pipe_write_wanted) |
1326 | { |
1774 | { |
|
|
1775 | int old_errno; |
|
|
1776 | |
|
|
1777 | pipe_write_skipped = 0; /* just an optimisation, no fence needed */ |
|
|
1778 | |
1327 | int old_errno = errno; /* save errno because write might clobber it */ |
1779 | old_errno = errno; /* save errno because write will clobber it */ |
1328 | char dummy; |
|
|
1329 | |
|
|
1330 | *flag = 1; |
|
|
1331 | |
1780 | |
1332 | #if EV_USE_EVENTFD |
1781 | #if EV_USE_EVENTFD |
1333 | if (evfd >= 0) |
1782 | if (evfd >= 0) |
1334 | { |
1783 | { |
1335 | uint64_t counter = 1; |
1784 | uint64_t counter = 1; |
1336 | write (evfd, &counter, sizeof (uint64_t)); |
1785 | write (evfd, &counter, sizeof (uint64_t)); |
1337 | } |
1786 | } |
1338 | else |
1787 | else |
1339 | #endif |
1788 | #endif |
|
|
1789 | { |
1340 | /* win32 people keep sending patches that change this write() to send() */ |
1790 | /* win32 people keep sending patches that change this write() to send() */ |
1341 | /* and then run away. but send() is wrong, it wants a socket handle on win32 */ |
1791 | /* and then run away. but send() is wrong, it wants a socket handle on win32 */ |
1342 | /* so when you think this write should be a send instead, please find out */ |
1792 | /* so when you think this write should be a send instead, please find out */ |
1343 | /* where your send() is from - it's definitely not the microsoft send, and */ |
1793 | /* where your send() is from - it's definitely not the microsoft send, and */ |
1344 | /* tell me. thank you. */ |
1794 | /* tell me. thank you. */ |
1345 | write (evpipe [1], &dummy, 1); |
1795 | write (evpipe [1], &(evpipe [1]), 1); |
|
|
1796 | } |
1346 | |
1797 | |
1347 | errno = old_errno; |
1798 | errno = old_errno; |
1348 | } |
1799 | } |
1349 | } |
1800 | } |
1350 | |
1801 | |
… | |
… | |
1353 | static void |
1804 | static void |
1354 | pipecb (EV_P_ ev_io *iow, int revents) |
1805 | pipecb (EV_P_ ev_io *iow, int revents) |
1355 | { |
1806 | { |
1356 | int i; |
1807 | int i; |
1357 | |
1808 | |
|
|
1809 | if (revents & EV_READ) |
|
|
1810 | { |
1358 | #if EV_USE_EVENTFD |
1811 | #if EV_USE_EVENTFD |
1359 | if (evfd >= 0) |
1812 | if (evfd >= 0) |
1360 | { |
1813 | { |
1361 | uint64_t counter; |
1814 | uint64_t counter; |
1362 | read (evfd, &counter, sizeof (uint64_t)); |
1815 | read (evfd, &counter, sizeof (uint64_t)); |
1363 | } |
1816 | } |
1364 | else |
1817 | else |
1365 | #endif |
1818 | #endif |
1366 | { |
1819 | { |
1367 | char dummy; |
1820 | char dummy; |
1368 | /* see discussion in evpipe_write when you think this read should be recv in win32 */ |
1821 | /* see discussion in evpipe_write when you think this read should be recv in win32 */ |
1369 | read (evpipe [0], &dummy, 1); |
1822 | read (evpipe [0], &dummy, 1); |
|
|
1823 | } |
1370 | } |
1824 | } |
|
|
1825 | |
|
|
1826 | pipe_write_skipped = 0; |
1371 | |
1827 | |
1372 | #if EV_SIGNAL_ENABLE |
1828 | #if EV_SIGNAL_ENABLE |
1373 | if (sig_pending) |
1829 | if (sig_pending) |
1374 | { |
1830 | { |
1375 | sig_pending = 0; |
1831 | sig_pending = 0; |
1376 | |
1832 | |
1377 | for (i = EV_NSIG - 1; i--; ) |
1833 | for (i = EV_NSIG - 1; i--; ) |
1378 | if (expect_false (signals [i].pending)) |
1834 | if (expect_false (signals [i].pending)) |
1379 | ev_feed_signal_event (EV_A_ i + 1); |
1835 | ev_feed_signal_event (EV_A_ i + 1); |
… | |
… | |
1404 | EV_P = signals [signum - 1].loop; |
1860 | EV_P = signals [signum - 1].loop; |
1405 | |
1861 | |
1406 | if (!EV_A) |
1862 | if (!EV_A) |
1407 | return; |
1863 | return; |
1408 | #endif |
1864 | #endif |
|
|
1865 | |
|
|
1866 | if (!ev_active (&pipe_w)) |
|
|
1867 | return; |
1409 | |
1868 | |
1410 | signals [signum - 1].pending = 1; |
1869 | signals [signum - 1].pending = 1; |
1411 | evpipe_write (EV_A_ &sig_pending); |
1870 | evpipe_write (EV_A_ &sig_pending); |
1412 | } |
1871 | } |
1413 | |
1872 | |
… | |
… | |
1545 | #endif |
2004 | #endif |
1546 | #if EV_USE_SELECT |
2005 | #if EV_USE_SELECT |
1547 | # include "ev_select.c" |
2006 | # include "ev_select.c" |
1548 | #endif |
2007 | #endif |
1549 | |
2008 | |
1550 | int |
2009 | int ecb_cold |
1551 | ev_version_major (void) |
2010 | ev_version_major (void) |
1552 | { |
2011 | { |
1553 | return EV_VERSION_MAJOR; |
2012 | return EV_VERSION_MAJOR; |
1554 | } |
2013 | } |
1555 | |
2014 | |
1556 | int |
2015 | int ecb_cold |
1557 | ev_version_minor (void) |
2016 | ev_version_minor (void) |
1558 | { |
2017 | { |
1559 | return EV_VERSION_MINOR; |
2018 | return EV_VERSION_MINOR; |
1560 | } |
2019 | } |
1561 | |
2020 | |
1562 | /* return true if we are running with elevated privileges and should ignore env variables */ |
2021 | /* return true if we are running with elevated privileges and should ignore env variables */ |
1563 | int inline_size |
2022 | int inline_size ecb_cold |
1564 | enable_secure (void) |
2023 | enable_secure (void) |
1565 | { |
2024 | { |
1566 | #ifdef _WIN32 |
2025 | #ifdef _WIN32 |
1567 | return 0; |
2026 | return 0; |
1568 | #else |
2027 | #else |
1569 | return getuid () != geteuid () |
2028 | return getuid () != geteuid () |
1570 | || getgid () != getegid (); |
2029 | || getgid () != getegid (); |
1571 | #endif |
2030 | #endif |
1572 | } |
2031 | } |
1573 | |
2032 | |
1574 | unsigned int |
2033 | unsigned int ecb_cold |
1575 | ev_supported_backends (void) |
2034 | ev_supported_backends (void) |
1576 | { |
2035 | { |
1577 | unsigned int flags = 0; |
2036 | unsigned int flags = 0; |
1578 | |
2037 | |
1579 | if (EV_USE_PORT ) flags |= EVBACKEND_PORT; |
2038 | if (EV_USE_PORT ) flags |= EVBACKEND_PORT; |
… | |
… | |
1583 | if (EV_USE_SELECT) flags |= EVBACKEND_SELECT; |
2042 | if (EV_USE_SELECT) flags |= EVBACKEND_SELECT; |
1584 | |
2043 | |
1585 | return flags; |
2044 | return flags; |
1586 | } |
2045 | } |
1587 | |
2046 | |
1588 | unsigned int |
2047 | unsigned int ecb_cold |
1589 | ev_recommended_backends (void) |
2048 | ev_recommended_backends (void) |
1590 | { |
2049 | { |
1591 | unsigned int flags = ev_supported_backends (); |
2050 | unsigned int flags = ev_supported_backends (); |
1592 | |
2051 | |
1593 | #ifndef __NetBSD__ |
2052 | #ifndef __NetBSD__ |
… | |
… | |
1605 | #endif |
2064 | #endif |
1606 | |
2065 | |
1607 | return flags; |
2066 | return flags; |
1608 | } |
2067 | } |
1609 | |
2068 | |
1610 | unsigned int |
2069 | unsigned int ecb_cold |
1611 | ev_embeddable_backends (void) |
2070 | ev_embeddable_backends (void) |
1612 | { |
2071 | { |
1613 | int flags = EVBACKEND_EPOLL | EVBACKEND_KQUEUE | EVBACKEND_PORT; |
2072 | int flags = EVBACKEND_EPOLL | EVBACKEND_KQUEUE | EVBACKEND_PORT; |
1614 | |
2073 | |
1615 | /* epoll embeddability broken on all linux versions up to at least 2.6.23 */ |
2074 | /* epoll embeddability broken on all linux versions up to at least 2.6.23 */ |
… | |
… | |
1660 | ev_userdata (EV_P) |
2119 | ev_userdata (EV_P) |
1661 | { |
2120 | { |
1662 | return userdata; |
2121 | return userdata; |
1663 | } |
2122 | } |
1664 | |
2123 | |
|
|
2124 | void |
1665 | void ev_set_invoke_pending_cb (EV_P_ void (*invoke_pending_cb)(EV_P)) |
2125 | ev_set_invoke_pending_cb (EV_P_ void (*invoke_pending_cb)(EV_P)) |
1666 | { |
2126 | { |
1667 | invoke_cb = invoke_pending_cb; |
2127 | invoke_cb = invoke_pending_cb; |
1668 | } |
2128 | } |
1669 | |
2129 | |
|
|
2130 | void |
1670 | void ev_set_loop_release_cb (EV_P_ void (*release)(EV_P), void (*acquire)(EV_P)) |
2131 | ev_set_loop_release_cb (EV_P_ void (*release)(EV_P), void (*acquire)(EV_P)) |
1671 | { |
2132 | { |
1672 | release_cb = release; |
2133 | release_cb = release; |
1673 | acquire_cb = acquire; |
2134 | acquire_cb = acquire; |
1674 | } |
2135 | } |
1675 | #endif |
2136 | #endif |
1676 | |
2137 | |
1677 | /* initialise a loop structure, must be zero-initialised */ |
2138 | /* initialise a loop structure, must be zero-initialised */ |
1678 | static void noinline |
2139 | static void noinline ecb_cold |
1679 | loop_init (EV_P_ unsigned int flags) |
2140 | loop_init (EV_P_ unsigned int flags) |
1680 | { |
2141 | { |
1681 | if (!backend) |
2142 | if (!backend) |
1682 | { |
2143 | { |
1683 | origflags = flags; |
2144 | origflags = flags; |
… | |
… | |
1711 | if (!(flags & EVFLAG_NOENV) |
2172 | if (!(flags & EVFLAG_NOENV) |
1712 | && !enable_secure () |
2173 | && !enable_secure () |
1713 | && getenv ("LIBEV_FLAGS")) |
2174 | && getenv ("LIBEV_FLAGS")) |
1714 | flags = atoi (getenv ("LIBEV_FLAGS")); |
2175 | flags = atoi (getenv ("LIBEV_FLAGS")); |
1715 | |
2176 | |
1716 | ev_rt_now = ev_time (); |
2177 | ev_rt_now = ev_time (); |
1717 | mn_now = get_clock (); |
2178 | mn_now = get_clock (); |
1718 | now_floor = mn_now; |
2179 | now_floor = mn_now; |
1719 | rtmn_diff = ev_rt_now - mn_now; |
2180 | rtmn_diff = ev_rt_now - mn_now; |
1720 | #if EV_FEATURE_API |
2181 | #if EV_FEATURE_API |
1721 | invoke_cb = ev_invoke_pending; |
2182 | invoke_cb = ev_invoke_pending; |
1722 | #endif |
2183 | #endif |
1723 | |
2184 | |
1724 | io_blocktime = 0.; |
2185 | io_blocktime = 0.; |
1725 | timeout_blocktime = 0.; |
2186 | timeout_blocktime = 0.; |
1726 | backend = 0; |
2187 | backend = 0; |
1727 | backend_fd = -1; |
2188 | backend_fd = -1; |
1728 | sig_pending = 0; |
2189 | sig_pending = 0; |
1729 | #if EV_ASYNC_ENABLE |
2190 | #if EV_ASYNC_ENABLE |
1730 | async_pending = 0; |
2191 | async_pending = 0; |
1731 | #endif |
2192 | #endif |
|
|
2193 | pipe_write_skipped = 0; |
|
|
2194 | pipe_write_wanted = 0; |
1732 | #if EV_USE_INOTIFY |
2195 | #if EV_USE_INOTIFY |
1733 | fs_fd = flags & EVFLAG_NOINOTIFY ? -1 : -2; |
2196 | fs_fd = flags & EVFLAG_NOINOTIFY ? -1 : -2; |
1734 | #endif |
2197 | #endif |
1735 | #if EV_USE_SIGNALFD |
2198 | #if EV_USE_SIGNALFD |
1736 | sigfd = flags & EVFLAG_SIGNALFD ? -2 : -1; |
2199 | sigfd = flags & EVFLAG_SIGNALFD ? -2 : -1; |
1737 | #endif |
2200 | #endif |
1738 | |
2201 | |
1739 | if (!(flags & EVBACKEND_MASK)) |
2202 | if (!(flags & EVBACKEND_MASK)) |
1740 | flags |= ev_recommended_backends (); |
2203 | flags |= ev_recommended_backends (); |
1741 | |
2204 | |
… | |
… | |
1766 | #endif |
2229 | #endif |
1767 | } |
2230 | } |
1768 | } |
2231 | } |
1769 | |
2232 | |
1770 | /* free up a loop structure */ |
2233 | /* free up a loop structure */ |
1771 | void |
2234 | void ecb_cold |
1772 | ev_loop_destroy (EV_P) |
2235 | ev_loop_destroy (EV_P) |
1773 | { |
2236 | { |
1774 | int i; |
2237 | int i; |
1775 | |
2238 | |
1776 | #if EV_MULTIPLICITY |
2239 | #if EV_MULTIPLICITY |
… | |
… | |
1906 | infy_fork (EV_A); |
2369 | infy_fork (EV_A); |
1907 | #endif |
2370 | #endif |
1908 | |
2371 | |
1909 | if (ev_is_active (&pipe_w)) |
2372 | if (ev_is_active (&pipe_w)) |
1910 | { |
2373 | { |
1911 | /* this "locks" the handlers against writing to the pipe */ |
2374 | /* pipe_write_wanted must be false now, so modifying fd vars should be safe */ |
1912 | /* while we modify the fd vars */ |
|
|
1913 | sig_pending = 1; |
|
|
1914 | #if EV_ASYNC_ENABLE |
|
|
1915 | async_pending = 1; |
|
|
1916 | #endif |
|
|
1917 | |
2375 | |
1918 | ev_ref (EV_A); |
2376 | ev_ref (EV_A); |
1919 | ev_io_stop (EV_A_ &pipe_w); |
2377 | ev_io_stop (EV_A_ &pipe_w); |
1920 | |
2378 | |
1921 | #if EV_USE_EVENTFD |
2379 | #if EV_USE_EVENTFD |
… | |
… | |
1939 | postfork = 0; |
2397 | postfork = 0; |
1940 | } |
2398 | } |
1941 | |
2399 | |
1942 | #if EV_MULTIPLICITY |
2400 | #if EV_MULTIPLICITY |
1943 | |
2401 | |
1944 | struct ev_loop * |
2402 | struct ev_loop * ecb_cold |
1945 | ev_loop_new (unsigned int flags) |
2403 | ev_loop_new (unsigned int flags) |
1946 | { |
2404 | { |
1947 | EV_P = (struct ev_loop *)ev_malloc (sizeof (struct ev_loop)); |
2405 | EV_P = (struct ev_loop *)ev_malloc (sizeof (struct ev_loop)); |
1948 | |
2406 | |
1949 | memset (EV_A, 0, sizeof (struct ev_loop)); |
2407 | memset (EV_A, 0, sizeof (struct ev_loop)); |
… | |
… | |
1957 | } |
2415 | } |
1958 | |
2416 | |
1959 | #endif /* multiplicity */ |
2417 | #endif /* multiplicity */ |
1960 | |
2418 | |
1961 | #if EV_VERIFY |
2419 | #if EV_VERIFY |
1962 | static void noinline |
2420 | static void noinline ecb_cold |
1963 | verify_watcher (EV_P_ W w) |
2421 | verify_watcher (EV_P_ W w) |
1964 | { |
2422 | { |
1965 | assert (("libev: watcher has invalid priority", ABSPRI (w) >= 0 && ABSPRI (w) < NUMPRI)); |
2423 | assert (("libev: watcher has invalid priority", ABSPRI (w) >= 0 && ABSPRI (w) < NUMPRI)); |
1966 | |
2424 | |
1967 | if (w->pending) |
2425 | if (w->pending) |
1968 | assert (("libev: pending watcher not on pending queue", pendings [ABSPRI (w)][w->pending - 1].w == w)); |
2426 | assert (("libev: pending watcher not on pending queue", pendings [ABSPRI (w)][w->pending - 1].w == w)); |
1969 | } |
2427 | } |
1970 | |
2428 | |
1971 | static void noinline |
2429 | static void noinline ecb_cold |
1972 | verify_heap (EV_P_ ANHE *heap, int N) |
2430 | verify_heap (EV_P_ ANHE *heap, int N) |
1973 | { |
2431 | { |
1974 | int i; |
2432 | int i; |
1975 | |
2433 | |
1976 | for (i = HEAP0; i < N + HEAP0; ++i) |
2434 | for (i = HEAP0; i < N + HEAP0; ++i) |
… | |
… | |
1981 | |
2439 | |
1982 | verify_watcher (EV_A_ (W)ANHE_w (heap [i])); |
2440 | verify_watcher (EV_A_ (W)ANHE_w (heap [i])); |
1983 | } |
2441 | } |
1984 | } |
2442 | } |
1985 | |
2443 | |
1986 | static void noinline |
2444 | static void noinline ecb_cold |
1987 | array_verify (EV_P_ W *ws, int cnt) |
2445 | array_verify (EV_P_ W *ws, int cnt) |
1988 | { |
2446 | { |
1989 | while (cnt--) |
2447 | while (cnt--) |
1990 | { |
2448 | { |
1991 | assert (("libev: active index mismatch", ev_active (ws [cnt]) == cnt + 1)); |
2449 | assert (("libev: active index mismatch", ev_active (ws [cnt]) == cnt + 1)); |
… | |
… | |
1993 | } |
2451 | } |
1994 | } |
2452 | } |
1995 | #endif |
2453 | #endif |
1996 | |
2454 | |
1997 | #if EV_FEATURE_API |
2455 | #if EV_FEATURE_API |
1998 | void |
2456 | void ecb_cold |
1999 | ev_verify (EV_P) |
2457 | ev_verify (EV_P) |
2000 | { |
2458 | { |
2001 | #if EV_VERIFY |
2459 | #if EV_VERIFY |
2002 | int i; |
2460 | int i; |
2003 | WL w; |
2461 | WL w; |
… | |
… | |
2069 | #endif |
2527 | #endif |
2070 | } |
2528 | } |
2071 | #endif |
2529 | #endif |
2072 | |
2530 | |
2073 | #if EV_MULTIPLICITY |
2531 | #if EV_MULTIPLICITY |
2074 | struct ev_loop * |
2532 | struct ev_loop * ecb_cold |
2075 | #else |
2533 | #else |
2076 | int |
2534 | int |
2077 | #endif |
2535 | #endif |
2078 | ev_default_loop (unsigned int flags) |
2536 | ev_default_loop (unsigned int flags) |
2079 | { |
2537 | { |
… | |
… | |
2208 | } |
2666 | } |
2209 | } |
2667 | } |
2210 | |
2668 | |
2211 | #if EV_PERIODIC_ENABLE |
2669 | #if EV_PERIODIC_ENABLE |
2212 | |
2670 | |
2213 | inline_speed void |
2671 | static void noinline |
2214 | periodic_recalc (EV_P_ ev_periodic *w) |
2672 | periodic_recalc (EV_P_ ev_periodic *w) |
2215 | { |
2673 | { |
2216 | /* TODO: use slow but potentially more correct incremental algo, */ |
2674 | ev_tstamp interval = w->interval > MIN_INTERVAL ? w->interval : MIN_INTERVAL; |
2217 | /* also do not rely on ceil */ |
2675 | ev_tstamp at = w->offset + interval * ev_floor ((ev_rt_now - w->offset) / interval); |
2218 | ev_at (w) = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval; |
2676 | |
|
|
2677 | /* the above almost always errs on the low side */ |
|
|
2678 | while (at <= ev_rt_now) |
|
|
2679 | { |
|
|
2680 | ev_tstamp nat = at + w->interval; |
|
|
2681 | |
|
|
2682 | /* when resolution fails us, we use ev_rt_now */ |
|
|
2683 | if (expect_false (nat == at)) |
|
|
2684 | { |
|
|
2685 | at = ev_rt_now; |
|
|
2686 | break; |
|
|
2687 | } |
|
|
2688 | |
|
|
2689 | at = nat; |
|
|
2690 | } |
|
|
2691 | |
|
|
2692 | ev_at (w) = at; |
2219 | } |
2693 | } |
2220 | |
2694 | |
2221 | /* make periodics pending */ |
2695 | /* make periodics pending */ |
2222 | inline_size void |
2696 | inline_size void |
2223 | periodics_reify (EV_P) |
2697 | periodics_reify (EV_P) |
… | |
… | |
2245 | downheap (periodics, periodiccnt, HEAP0); |
2719 | downheap (periodics, periodiccnt, HEAP0); |
2246 | } |
2720 | } |
2247 | else if (w->interval) |
2721 | else if (w->interval) |
2248 | { |
2722 | { |
2249 | periodic_recalc (EV_A_ w); |
2723 | periodic_recalc (EV_A_ w); |
2250 | |
|
|
2251 | /* if next trigger time is not sufficiently in the future, put it there */ |
|
|
2252 | /* this might happen because of floating point inexactness */ |
|
|
2253 | if (ev_at (w) - ev_rt_now < TIME_EPSILON) |
|
|
2254 | { |
|
|
2255 | ev_at (w) += w->interval; |
|
|
2256 | |
|
|
2257 | /* if interval is unreasonably low we might still have a time in the past */ |
|
|
2258 | /* so correct this. this will make the periodic very inexact, but the user */ |
|
|
2259 | /* has effectively asked to get triggered more often than possible */ |
|
|
2260 | if (ev_at (w) < ev_rt_now) |
|
|
2261 | ev_at (w) = ev_rt_now; |
|
|
2262 | } |
|
|
2263 | |
|
|
2264 | ANHE_at_cache (periodics [HEAP0]); |
2724 | ANHE_at_cache (periodics [HEAP0]); |
2265 | downheap (periodics, periodiccnt, HEAP0); |
2725 | downheap (periodics, periodiccnt, HEAP0); |
2266 | } |
2726 | } |
2267 | else |
2727 | else |
2268 | ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */ |
2728 | ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */ |
… | |
… | |
2276 | } |
2736 | } |
2277 | } |
2737 | } |
2278 | |
2738 | |
2279 | /* simply recalculate all periodics */ |
2739 | /* simply recalculate all periodics */ |
2280 | /* TODO: maybe ensure that at least one event happens when jumping forward? */ |
2740 | /* TODO: maybe ensure that at least one event happens when jumping forward? */ |
2281 | static void noinline |
2741 | static void noinline ecb_cold |
2282 | periodics_reschedule (EV_P) |
2742 | periodics_reschedule (EV_P) |
2283 | { |
2743 | { |
2284 | int i; |
2744 | int i; |
2285 | |
2745 | |
2286 | /* adjust periodics after time jump */ |
2746 | /* adjust periodics after time jump */ |
… | |
… | |
2299 | reheap (periodics, periodiccnt); |
2759 | reheap (periodics, periodiccnt); |
2300 | } |
2760 | } |
2301 | #endif |
2761 | #endif |
2302 | |
2762 | |
2303 | /* adjust all timers by a given offset */ |
2763 | /* adjust all timers by a given offset */ |
2304 | static void noinline |
2764 | static void noinline ecb_cold |
2305 | timers_reschedule (EV_P_ ev_tstamp adjust) |
2765 | timers_reschedule (EV_P_ ev_tstamp adjust) |
2306 | { |
2766 | { |
2307 | int i; |
2767 | int i; |
2308 | |
2768 | |
2309 | for (i = 0; i < timercnt; ++i) |
2769 | for (i = 0; i < timercnt; ++i) |
… | |
… | |
2346 | * doesn't hurt either as we only do this on time-jumps or |
2806 | * doesn't hurt either as we only do this on time-jumps or |
2347 | * in the unlikely event of having been preempted here. |
2807 | * in the unlikely event of having been preempted here. |
2348 | */ |
2808 | */ |
2349 | for (i = 4; --i; ) |
2809 | for (i = 4; --i; ) |
2350 | { |
2810 | { |
|
|
2811 | ev_tstamp diff; |
2351 | rtmn_diff = ev_rt_now - mn_now; |
2812 | rtmn_diff = ev_rt_now - mn_now; |
2352 | |
2813 | |
|
|
2814 | diff = odiff - rtmn_diff; |
|
|
2815 | |
2353 | if (expect_true (fabs (odiff - rtmn_diff) < MIN_TIMEJUMP)) |
2816 | if (expect_true ((diff < 0. ? -diff : diff) < MIN_TIMEJUMP)) |
2354 | return; /* all is well */ |
2817 | return; /* all is well */ |
2355 | |
2818 | |
2356 | ev_rt_now = ev_time (); |
2819 | ev_rt_now = ev_time (); |
2357 | mn_now = get_clock (); |
2820 | mn_now = get_clock (); |
2358 | now_floor = mn_now; |
2821 | now_floor = mn_now; |
… | |
… | |
2448 | ev_tstamp prev_mn_now = mn_now; |
2911 | ev_tstamp prev_mn_now = mn_now; |
2449 | |
2912 | |
2450 | /* update time to cancel out callback processing overhead */ |
2913 | /* update time to cancel out callback processing overhead */ |
2451 | time_update (EV_A_ 1e100); |
2914 | time_update (EV_A_ 1e100); |
2452 | |
2915 | |
|
|
2916 | /* from now on, we want a pipe-wake-up */ |
|
|
2917 | pipe_write_wanted = 1; |
|
|
2918 | |
|
|
2919 | ECB_MEMORY_FENCE; /* make sure pipe_write_wanted is visible before we check for potential skips */ |
|
|
2920 | |
2453 | if (expect_true (!(flags & EVRUN_NOWAIT || idleall || !activecnt))) |
2921 | if (expect_true (!(flags & EVRUN_NOWAIT || idleall || !activecnt || pipe_write_skipped))) |
2454 | { |
2922 | { |
2455 | waittime = MAX_BLOCKTIME; |
2923 | waittime = MAX_BLOCKTIME; |
2456 | |
2924 | |
2457 | if (timercnt) |
2925 | if (timercnt) |
2458 | { |
2926 | { |
2459 | ev_tstamp to = ANHE_at (timers [HEAP0]) - mn_now + backend_fudge; |
2927 | ev_tstamp to = ANHE_at (timers [HEAP0]) - mn_now; |
2460 | if (waittime > to) waittime = to; |
2928 | if (waittime > to) waittime = to; |
2461 | } |
2929 | } |
2462 | |
2930 | |
2463 | #if EV_PERIODIC_ENABLE |
2931 | #if EV_PERIODIC_ENABLE |
2464 | if (periodiccnt) |
2932 | if (periodiccnt) |
2465 | { |
2933 | { |
2466 | ev_tstamp to = ANHE_at (periodics [HEAP0]) - ev_rt_now + backend_fudge; |
2934 | ev_tstamp to = ANHE_at (periodics [HEAP0]) - ev_rt_now; |
2467 | if (waittime > to) waittime = to; |
2935 | if (waittime > to) waittime = to; |
2468 | } |
2936 | } |
2469 | #endif |
2937 | #endif |
2470 | |
2938 | |
2471 | /* don't let timeouts decrease the waittime below timeout_blocktime */ |
2939 | /* don't let timeouts decrease the waittime below timeout_blocktime */ |
2472 | if (expect_false (waittime < timeout_blocktime)) |
2940 | if (expect_false (waittime < timeout_blocktime)) |
2473 | waittime = timeout_blocktime; |
2941 | waittime = timeout_blocktime; |
|
|
2942 | |
|
|
2943 | /* at this point, we NEED to wait, so we have to ensure */ |
|
|
2944 | /* to pass a minimum nonzero value to the backend */ |
|
|
2945 | if (expect_false (waittime < backend_mintime)) |
|
|
2946 | waittime = backend_mintime; |
2474 | |
2947 | |
2475 | /* extra check because io_blocktime is commonly 0 */ |
2948 | /* extra check because io_blocktime is commonly 0 */ |
2476 | if (expect_false (io_blocktime)) |
2949 | if (expect_false (io_blocktime)) |
2477 | { |
2950 | { |
2478 | sleeptime = io_blocktime - (mn_now - prev_mn_now); |
2951 | sleeptime = io_blocktime - (mn_now - prev_mn_now); |
2479 | |
2952 | |
2480 | if (sleeptime > waittime - backend_fudge) |
2953 | if (sleeptime > waittime - backend_mintime) |
2481 | sleeptime = waittime - backend_fudge; |
2954 | sleeptime = waittime - backend_mintime; |
2482 | |
2955 | |
2483 | if (expect_true (sleeptime > 0.)) |
2956 | if (expect_true (sleeptime > 0.)) |
2484 | { |
2957 | { |
2485 | ev_sleep (sleeptime); |
2958 | ev_sleep (sleeptime); |
2486 | waittime -= sleeptime; |
2959 | waittime -= sleeptime; |
… | |
… | |
2492 | ++loop_count; |
2965 | ++loop_count; |
2493 | #endif |
2966 | #endif |
2494 | assert ((loop_done = EVBREAK_RECURSE, 1)); /* assert for side effect */ |
2967 | assert ((loop_done = EVBREAK_RECURSE, 1)); /* assert for side effect */ |
2495 | backend_poll (EV_A_ waittime); |
2968 | backend_poll (EV_A_ waittime); |
2496 | assert ((loop_done = EVBREAK_CANCEL, 1)); /* assert for side effect */ |
2969 | assert ((loop_done = EVBREAK_CANCEL, 1)); /* assert for side effect */ |
|
|
2970 | |
|
|
2971 | pipe_write_wanted = 0; /* just an optimsiation, no fence needed */ |
|
|
2972 | |
|
|
2973 | if (pipe_write_skipped) |
|
|
2974 | { |
|
|
2975 | assert (("libev: pipe_w not active, but pipe not written", ev_is_active (&pipe_w))); |
|
|
2976 | ev_feed_event (EV_A_ &pipe_w, EV_CUSTOM); |
|
|
2977 | } |
|
|
2978 | |
2497 | |
2979 | |
2498 | /* update ev_rt_now, do magic */ |
2980 | /* update ev_rt_now, do magic */ |
2499 | time_update (EV_A_ waittime + sleeptime); |
2981 | time_update (EV_A_ waittime + sleeptime); |
2500 | } |
2982 | } |
2501 | |
2983 | |
… | |
… | |
3078 | if (!pend || pend == path) |
3560 | if (!pend || pend == path) |
3079 | break; |
3561 | break; |
3080 | |
3562 | |
3081 | *pend = 0; |
3563 | *pend = 0; |
3082 | w->wd = inotify_add_watch (fs_fd, path, mask); |
3564 | w->wd = inotify_add_watch (fs_fd, path, mask); |
3083 | } |
3565 | } |
3084 | while (w->wd < 0 && (errno == ENOENT || errno == EACCES)); |
3566 | while (w->wd < 0 && (errno == ENOENT || errno == EACCES)); |
3085 | } |
3567 | } |
3086 | } |
3568 | } |
3087 | |
3569 | |
3088 | if (w->wd >= 0) |
3570 | if (w->wd >= 0) |
… | |
… | |
3155 | infy_wd (EV_A_ ev->wd, ev->wd, ev); |
3637 | infy_wd (EV_A_ ev->wd, ev->wd, ev); |
3156 | ofs += sizeof (struct inotify_event) + ev->len; |
3638 | ofs += sizeof (struct inotify_event) + ev->len; |
3157 | } |
3639 | } |
3158 | } |
3640 | } |
3159 | |
3641 | |
3160 | inline_size void |
3642 | inline_size void ecb_cold |
3161 | ev_check_2625 (EV_P) |
3643 | ev_check_2625 (EV_P) |
3162 | { |
3644 | { |
3163 | /* kernels < 2.6.25 are borked |
3645 | /* kernels < 2.6.25 are borked |
3164 | * http://www.ussg.indiana.edu/hypermail/linux/kernel/0711.3/1208.html |
3646 | * http://www.ussg.indiana.edu/hypermail/linux/kernel/0711.3/1208.html |
3165 | */ |
3647 | */ |
… | |
… | |
3790 | } |
4272 | } |
3791 | |
4273 | |
3792 | /*****************************************************************************/ |
4274 | /*****************************************************************************/ |
3793 | |
4275 | |
3794 | #if EV_WALK_ENABLE |
4276 | #if EV_WALK_ENABLE |
3795 | void |
4277 | void ecb_cold |
3796 | ev_walk (EV_P_ int types, void (*cb)(EV_P_ int type, void *w)) |
4278 | ev_walk (EV_P_ int types, void (*cb)(EV_P_ int type, void *w)) |
3797 | { |
4279 | { |
3798 | int i, j; |
4280 | int i, j; |
3799 | ev_watcher_list *wl, *wn; |
4281 | ev_watcher_list *wl, *wn; |
3800 | |
4282 | |
… | |
… | |
3844 | cb (EV_A_ EV_PERIODIC, ANHE_w (periodics [i])); |
4326 | cb (EV_A_ EV_PERIODIC, ANHE_w (periodics [i])); |
3845 | #endif |
4327 | #endif |
3846 | |
4328 | |
3847 | #if EV_IDLE_ENABLE |
4329 | #if EV_IDLE_ENABLE |
3848 | if (types & EV_IDLE) |
4330 | if (types & EV_IDLE) |
3849 | for (j = NUMPRI; i--; ) |
4331 | for (j = NUMPRI; j--; ) |
3850 | for (i = idlecnt [j]; i--; ) |
4332 | for (i = idlecnt [j]; i--; ) |
3851 | cb (EV_A_ EV_IDLE, idles [j][i]); |
4333 | cb (EV_A_ EV_IDLE, idles [j][i]); |
3852 | #endif |
4334 | #endif |
3853 | |
4335 | |
3854 | #if EV_FORK_ENABLE |
4336 | #if EV_FORK_ENABLE |