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Comparing libev/ev.c (file contents):
Revision 1.344 by root, Fri Jul 9 20:55:14 2010 UTC vs.
Revision 1.409 by root, Sat Feb 4 15:17:34 2012 UTC

1/* 1/*
2 * libev event processing core, watcher management 2 * libev event processing core, watcher management
3 * 3 *
4 * Copyright (c) 2007,2008,2009,2010 Marc Alexander Lehmann <libev@schmorp.de> 4 * Copyright (c) 2007,2008,2009,2010,2011 Marc Alexander Lehmann <libev@schmorp.de>
5 * All rights reserved. 5 * All rights reserved.
6 * 6 *
7 * Redistribution and use in source and binary forms, with or without modifica- 7 * Redistribution and use in source and binary forms, with or without modifica-
8 * tion, are permitted provided that the following conditions are met: 8 * tion, are permitted provided that the following conditions are met:
9 * 9 *
10 * 1. Redistributions of source code must retain the above copyright notice, 10 * 1. Redistributions of source code must retain the above copyright notice,
11 * this list of conditions and the following disclaimer. 11 * this list of conditions and the following disclaimer.
12 * 12 *
13 * 2. Redistributions in binary form must reproduce the above copyright 13 * 2. Redistributions in binary form must reproduce the above copyright
14 * notice, this list of conditions and the following disclaimer in the 14 * notice, this list of conditions and the following disclaimer in the
15 * documentation and/or other materials provided with the distribution. 15 * documentation and/or other materials provided with the distribution.
16 * 16 *
17 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR IMPLIED 17 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR IMPLIED
18 * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MER- 18 * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MER-
19 * CHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO 19 * CHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO
20 * EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPE- 20 * EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPE-
21 * CIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, 21 * CIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
… …
35 * and other provisions required by the GPL. If you do not delete the 35 * and other provisions required by the GPL. If you do not delete the
36 * provisions above, a recipient may use your version of this file under 36 * provisions above, a recipient may use your version of this file under
37 * either the BSD or the GPL. 37 * either the BSD or the GPL.
38 */ 38 */
39 39
40#ifdef __cplusplus
41extern "C" {
42#endif
43
44/* this big block deduces configuration from config.h */ 40/* this big block deduces configuration from config.h */
45#ifndef EV_STANDALONE 41#ifndef EV_STANDALONE
46# ifdef EV_CONFIG_H 42# ifdef EV_CONFIG_H
47# include EV_CONFIG_H 43# include EV_CONFIG_H
48# else 44# else
49# include "config.h" 45# include "config.h"
50# endif 46# endif
47
48#if HAVE_FLOOR
49# ifndef EV_USE_FLOOR
50# define EV_USE_FLOOR 1
51# endif
52#endif
51 53
52# if HAVE_CLOCK_SYSCALL 54# if HAVE_CLOCK_SYSCALL
53# ifndef EV_USE_CLOCK_SYSCALL 55# ifndef EV_USE_CLOCK_SYSCALL
54# define EV_USE_CLOCK_SYSCALL 1 56# define EV_USE_CLOCK_SYSCALL 1
55# ifndef EV_USE_REALTIME 57# ifndef EV_USE_REALTIME
… …
160# define EV_USE_EVENTFD 0 162# define EV_USE_EVENTFD 0
161# endif 163# endif
162 164
163#endif 165#endif
164 166
165#include <math.h>
166#include <stdlib.h> 167#include <stdlib.h>
167#include <string.h> 168#include <string.h>
168#include <fcntl.h> 169#include <fcntl.h>
169#include <stddef.h> 170#include <stddef.h>
170 171
… …
234/* to make it compile regardless, just remove the above line, */ 235/* to make it compile regardless, just remove the above line, */
235/* but consider reporting it, too! :) */ 236/* but consider reporting it, too! :) */
236# define EV_NSIG 65 237# define EV_NSIG 65
237#endif 238#endif
238 239
240#ifndef EV_USE_FLOOR
241# define EV_USE_FLOOR 0
242#endif
243
239#ifndef EV_USE_CLOCK_SYSCALL 244#ifndef EV_USE_CLOCK_SYSCALL
240# if __linux && __GLIBC__ >= 2 245# if __linux && __GLIBC__ >= 2
241# define EV_USE_CLOCK_SYSCALL EV_FEATURE_OS 246# define EV_USE_CLOCK_SYSCALL EV_FEATURE_OS
242# else 247# else
243# define EV_USE_CLOCK_SYSCALL 0 248# define EV_USE_CLOCK_SYSCALL 0
… …
378# undef EV_USE_INOTIFY 383# undef EV_USE_INOTIFY
379# define EV_USE_INOTIFY 0 384# define EV_USE_INOTIFY 0
380#endif 385#endif
381 386
382#if !EV_USE_NANOSLEEP 387#if !EV_USE_NANOSLEEP
383# ifndef _WIN32 388/* hp-ux has it in sys/time.h, which we unconditionally include above */
389# if !defined(_WIN32) && !defined(__hpux)
384# include <sys/select.h> 390# include <sys/select.h>
385# endif 391# endif
386#endif 392#endif
387 393
388#if EV_USE_INOTIFY 394#if EV_USE_INOTIFY
389# include <sys/utsname.h>
390# include <sys/statfs.h> 395# include <sys/statfs.h>
391# include <sys/inotify.h> 396# include <sys/inotify.h>
392/* some very old inotify.h headers don't have IN_DONT_FOLLOW */ 397/* some very old inotify.h headers don't have IN_DONT_FOLLOW */
393# ifndef IN_DONT_FOLLOW 398# ifndef IN_DONT_FOLLOW
394# undef EV_USE_INOTIFY 399# undef EV_USE_INOTIFY
… …
411# define EFD_CLOEXEC O_CLOEXEC 416# define EFD_CLOEXEC O_CLOEXEC
412# else 417# else
413# define EFD_CLOEXEC 02000000 418# define EFD_CLOEXEC 02000000
414# endif 419# endif
415# endif 420# endif
416# ifdef __cplusplus
417extern "C" {
418# endif
419int (eventfd) (unsigned int initval, int flags); 421EV_CPP(extern "C") int (eventfd) (unsigned int initval, int flags);
420# ifdef __cplusplus
421}
422# endif
423#endif 422#endif
424 423
425#if EV_USE_SIGNALFD 424#if EV_USE_SIGNALFD
426/* our minimum requirement is glibc 2.7 which has the stub, but not the header */ 425/* our minimum requirement is glibc 2.7 which has the stub, but not the header */
427# include <stdint.h> 426# include <stdint.h>
… …
433# define SFD_CLOEXEC O_CLOEXEC 432# define SFD_CLOEXEC O_CLOEXEC
434# else 433# else
435# define SFD_CLOEXEC 02000000 434# define SFD_CLOEXEC 02000000
436# endif 435# endif
437# endif 436# endif
438# ifdef __cplusplus
439extern "C" {
440# endif
441int signalfd (int fd, const sigset_t *mask, int flags); 437EV_CPP (extern "C") int signalfd (int fd, const sigset_t *mask, int flags);
442 438
443struct signalfd_siginfo 439struct signalfd_siginfo
444{ 440{
445 uint32_t ssi_signo; 441 uint32_t ssi_signo;
446 char pad[128 - sizeof (uint32_t)]; 442 char pad[128 - sizeof (uint32_t)];
447}; 443};
448# ifdef __cplusplus
449}
450# endif 444#endif
451#endif
452
453 445
454/**/ 446/**/
455 447
456#if EV_VERIFY >= 3 448#if EV_VERIFY >= 3
457# define EV_FREQUENT_CHECK ev_verify (EV_A) 449# define EV_FREQUENT_CHECK ev_verify (EV_A)
458#else 450#else
459# define EV_FREQUENT_CHECK do { } while (0) 451# define EV_FREQUENT_CHECK do { } while (0)
460#endif 452#endif
461 453
462/* 454/*
463 * This is used to avoid floating point rounding problems. 455 * This is used to work around floating point rounding problems.
464 * It is added to ev_rt_now when scheduling periodics
465 * to ensure progress, time-wise, even when rounding
466 * errors are against us.
467 * This value is good at least till the year 4000. 456 * This value is good at least till the year 4000.
468 * Better solutions welcome.
469 */ 457 */
470#define TIME_EPSILON 0.0001220703125 /* 1/8192 */ 458#define MIN_INTERVAL 0.0001220703125 /* 1/2**13, good till 4000 */
459/*#define MIN_INTERVAL 0.00000095367431640625 /* 1/2**20, good till 2200 */
471 460
472#define MIN_TIMEJUMP 1. /* minimum timejump that gets detected (if monotonic clock available) */ 461#define MIN_TIMEJUMP 1. /* minimum timejump that gets detected (if monotonic clock available) */
473#define MAX_BLOCKTIME 59.743 /* never wait longer than this time (to detect time jumps) */ 462#define MAX_BLOCKTIME 59.743 /* never wait longer than this time (to detect time jumps) */
474 463
464#define EV_TV_SET(tv,t) do { tv.tv_sec = (long)t; tv.tv_usec = (long)((t - tv.tv_sec) * 1e6); } while (0)
465#define EV_TS_SET(ts,t) do { ts.tv_sec = (long)t; ts.tv_nsec = (long)((t - ts.tv_sec) * 1e9); } while (0)
466
467/* the following is ecb.h embedded into libev - use update_ev_c to update from an external copy */
468/* ECB.H BEGIN */
469/*
470 * libecb - http://software.schmorp.de/pkg/libecb
471 *
472 * Copyright (©) 2009-2012 Marc Alexander Lehmann <libecb@schmorp.de>
473 * Copyright (©) 2011 Emanuele Giaquinta
474 * All rights reserved.
475 *
476 * Redistribution and use in source and binary forms, with or without modifica-
477 * tion, are permitted provided that the following conditions are met:
478 *
479 * 1. Redistributions of source code must retain the above copyright notice,
480 * this list of conditions and the following disclaimer.
481 *
482 * 2. Redistributions in binary form must reproduce the above copyright
483 * notice, this list of conditions and the following disclaimer in the
484 * documentation and/or other materials provided with the distribution.
485 *
486 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR IMPLIED
487 * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MER-
488 * CHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO
489 * EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPE-
490 * CIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
491 * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS;
492 * OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
493 * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTH-
494 * ERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
495 * OF THE POSSIBILITY OF SUCH DAMAGE.
496 */
497
498#ifndef ECB_H
499#define ECB_H
500
501#ifdef _WIN32
502 typedef signed char int8_t;
503 typedef unsigned char uint8_t;
504 typedef signed short int16_t;
505 typedef unsigned short uint16_t;
506 typedef signed int int32_t;
507 typedef unsigned int uint32_t;
475#if __GNUC__ >= 4 508 #if __GNUC__
476# define expect(expr,value) __builtin_expect ((expr),(value)) 509 typedef signed long long int64_t;
477# define noinline __attribute__ ((noinline)) 510 typedef unsigned long long uint64_t;
511 #else /* _MSC_VER || __BORLANDC__ */
512 typedef signed __int64 int64_t;
513 typedef unsigned __int64 uint64_t;
514 #endif
478#else 515#else
479# define expect(expr,value) (expr) 516 #include <inttypes.h>
480# define noinline
481# if __STDC_VERSION__ < 199901L && __GNUC__ < 2
482# define inline
483# endif 517#endif
518
519/* many compilers define _GNUC_ to some versions but then only implement
520 * what their idiot authors think are the "more important" extensions,
521 * causing enormous grief in return for some better fake benchmark numbers.
522 * or so.
523 * we try to detect these and simply assume they are not gcc - if they have
524 * an issue with that they should have done it right in the first place.
525 */
526#ifndef ECB_GCC_VERSION
527 #if !defined(__GNUC_MINOR__) || defined(__INTEL_COMPILER) || defined(__SUNPRO_C) || defined(__SUNPRO_CC) || defined(__llvm__) || defined(__clang__)
528 #define ECB_GCC_VERSION(major,minor) 0
529 #else
530 #define ECB_GCC_VERSION(major,minor) (__GNUC__ > (major) || (__GNUC__ == (major) && __GNUC_MINOR__ >= (minor)))
484#endif 531 #endif
532#endif
485 533
534/*****************************************************************************/
535
536/* ECB_NO_THREADS - ecb is not used by multiple threads, ever */
537/* ECB_NO_SMP - ecb might be used in multiple threads, but only on a single cpu */
538
539#if ECB_NO_THREADS || ECB_NO_SMP
540 #define ECB_MEMORY_FENCE do { } while (0)
541#endif
542
543#ifndef ECB_MEMORY_FENCE
544 #if ECB_GCC_VERSION(2,5) || defined(__INTEL_COMPILER) || (__llvm__ && __GNUC__) || __SUNPRO_C >= 0x5110 || __SUNPRO_CC >= 0x5110
545 #if __i386 || __i386__
546 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("lock; orb $0, -1(%%esp)" : : : "memory")
547 #define ECB_MEMORY_FENCE_ACQUIRE ECB_MEMORY_FENCE /* non-lock xchg might be enough */
548 #define ECB_MEMORY_FENCE_RELEASE do { } while (0) /* unlikely to change in future cpus */
549 #elif __amd64 || __amd64__ || __x86_64 || __x86_64__
550 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("mfence" : : : "memory")
551 #define ECB_MEMORY_FENCE_ACQUIRE __asm__ __volatile__ ("lfence" : : : "memory")
552 #define ECB_MEMORY_FENCE_RELEASE __asm__ __volatile__ ("sfence") /* play safe - not needed in any current cpu */
553 #elif __powerpc__ || __ppc__ || __powerpc64__ || __ppc64__
554 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("sync" : : : "memory")
555 #elif defined(__ARM_ARCH_6__ ) || defined(__ARM_ARCH_6J__ ) \
556 || defined(__ARM_ARCH_6K__) || defined(__ARM_ARCH_6ZK__)
557 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("mcr p15,0,%0,c7,c10,5" : : "r" (0) : "memory")
558 #elif defined(__ARM_ARCH_7__ ) || defined(__ARM_ARCH_7A__ ) \
559 || defined(__ARM_ARCH_7M__) || defined(__ARM_ARCH_7R__ )
560 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("dmb" : : : "memory")
561 #elif __sparc || __sparc__
562 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("membar #LoadStore | #LoadLoad | #StoreStore | #StoreLoad | " : : : "memory")
563 #define ECB_MEMORY_FENCE_ACQUIRE __asm__ __volatile__ ("membar #LoadStore | #LoadLoad" : : : "memory")
564 #define ECB_MEMORY_FENCE_RELEASE __asm__ __volatile__ ("membar #LoadStore | #StoreStore")
565 #elif defined(__s390__) || defined(__s390x__)
566 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("bcr 15,0" : : : "memory")
567 #endif
568 #endif
569#endif
570
571#ifndef ECB_MEMORY_FENCE
572 #if ECB_GCC_VERSION(4,4) || defined(__INTEL_COMPILER) || defined(__clang__)
573 #define ECB_MEMORY_FENCE __sync_synchronize ()
574 /*#define ECB_MEMORY_FENCE_ACQUIRE ({ char dummy = 0; __sync_lock_test_and_set (&dummy, 1); }) */
575 /*#define ECB_MEMORY_FENCE_RELEASE ({ char dummy = 1; __sync_lock_release (&dummy ); }) */
576 #elif _MSC_VER >= 1400 /* VC++ 2005 */
577 #pragma intrinsic(_ReadBarrier,_WriteBarrier,_ReadWriteBarrier)
578 #define ECB_MEMORY_FENCE _ReadWriteBarrier ()
579 #define ECB_MEMORY_FENCE_ACQUIRE _ReadWriteBarrier () /* according to msdn, _ReadBarrier is not a load fence */
580 #define ECB_MEMORY_FENCE_RELEASE _WriteBarrier ()
581 #elif defined(_WIN32)
582 #include <WinNT.h>
583 #define ECB_MEMORY_FENCE MemoryBarrier () /* actually just xchg on x86... scary */
584 #elif __SUNPRO_C >= 0x5110 || __SUNPRO_CC >= 0x5110
585 #include <mbarrier.h>
586 #define ECB_MEMORY_FENCE __machine_rw_barrier ()
587 #define ECB_MEMORY_FENCE_ACQUIRE __machine_r_barrier ()
588 #define ECB_MEMORY_FENCE_RELEASE __machine_w_barrier ()
589 #endif
590#endif
591
592#ifndef ECB_MEMORY_FENCE
593 #if !ECB_AVOID_PTHREADS
594 /*
595 * if you get undefined symbol references to pthread_mutex_lock,
596 * or failure to find pthread.h, then you should implement
597 * the ECB_MEMORY_FENCE operations for your cpu/compiler
598 * OR provide pthread.h and link against the posix thread library
599 * of your system.
600 */
601 #include <pthread.h>
602 #define ECB_NEEDS_PTHREADS 1
603 #define ECB_MEMORY_FENCE_NEEDS_PTHREADS 1
604
605 static pthread_mutex_t ecb_mf_lock = PTHREAD_MUTEX_INITIALIZER;
606 #define ECB_MEMORY_FENCE do { pthread_mutex_lock (&ecb_mf_lock); pthread_mutex_unlock (&ecb_mf_lock); } while (0)
607 #endif
608#endif
609
610#if !defined(ECB_MEMORY_FENCE_ACQUIRE) && defined(ECB_MEMORY_FENCE)
611 #define ECB_MEMORY_FENCE_ACQUIRE ECB_MEMORY_FENCE
612#endif
613
614#if !defined(ECB_MEMORY_FENCE_RELEASE) && defined(ECB_MEMORY_FENCE)
615 #define ECB_MEMORY_FENCE_RELEASE ECB_MEMORY_FENCE
616#endif
617
618/*****************************************************************************/
619
620#define ECB_C99 (__STDC_VERSION__ >= 199901L)
621
622#if __cplusplus
623 #define ecb_inline static inline
624#elif ECB_GCC_VERSION(2,5)
625 #define ecb_inline static __inline__
626#elif ECB_C99
627 #define ecb_inline static inline
628#else
629 #define ecb_inline static
630#endif
631
632#if ECB_GCC_VERSION(3,3)
633 #define ecb_restrict __restrict__
634#elif ECB_C99
635 #define ecb_restrict restrict
636#else
637 #define ecb_restrict
638#endif
639
640typedef int ecb_bool;
641
642#define ECB_CONCAT_(a, b) a ## b
643#define ECB_CONCAT(a, b) ECB_CONCAT_(a, b)
644#define ECB_STRINGIFY_(a) # a
645#define ECB_STRINGIFY(a) ECB_STRINGIFY_(a)
646
647#define ecb_function_ ecb_inline
648
649#if ECB_GCC_VERSION(3,1)
650 #define ecb_attribute(attrlist) __attribute__(attrlist)
651 #define ecb_is_constant(expr) __builtin_constant_p (expr)
652 #define ecb_expect(expr,value) __builtin_expect ((expr),(value))
653 #define ecb_prefetch(addr,rw,locality) __builtin_prefetch (addr, rw, locality)
654#else
655 #define ecb_attribute(attrlist)
656 #define ecb_is_constant(expr) 0
657 #define ecb_expect(expr,value) (expr)
658 #define ecb_prefetch(addr,rw,locality)
659#endif
660
661/* no emulation for ecb_decltype */
662#if ECB_GCC_VERSION(4,5)
663 #define ecb_decltype(x) __decltype(x)
664#elif ECB_GCC_VERSION(3,0)
665 #define ecb_decltype(x) __typeof(x)
666#endif
667
668#define ecb_noinline ecb_attribute ((__noinline__))
669#define ecb_noreturn ecb_attribute ((__noreturn__))
670#define ecb_unused ecb_attribute ((__unused__))
671#define ecb_const ecb_attribute ((__const__))
672#define ecb_pure ecb_attribute ((__pure__))
673
674#if ECB_GCC_VERSION(4,3)
675 #define ecb_artificial ecb_attribute ((__artificial__))
676 #define ecb_hot ecb_attribute ((__hot__))
677 #define ecb_cold ecb_attribute ((__cold__))
678#else
679 #define ecb_artificial
680 #define ecb_hot
681 #define ecb_cold
682#endif
683
684/* put around conditional expressions if you are very sure that the */
685/* expression is mostly true or mostly false. note that these return */
686/* booleans, not the expression. */
486#define expect_false(expr) expect ((expr) != 0, 0) 687#define ecb_expect_false(expr) ecb_expect (!!(expr), 0)
487#define expect_true(expr) expect ((expr) != 0, 1) 688#define ecb_expect_true(expr) ecb_expect (!!(expr), 1)
689/* for compatibility to the rest of the world */
690#define ecb_likely(expr) ecb_expect_true (expr)
691#define ecb_unlikely(expr) ecb_expect_false (expr)
692
693/* count trailing zero bits and count # of one bits */
694#if ECB_GCC_VERSION(3,4)
695 /* we assume int == 32 bit, long == 32 or 64 bit and long long == 64 bit */
696 #define ecb_ld32(x) (__builtin_clz (x) ^ 31)
697 #define ecb_ld64(x) (__builtin_clzll (x) ^ 63)
698 #define ecb_ctz32(x) __builtin_ctz (x)
699 #define ecb_ctz64(x) __builtin_ctzll (x)
700 #define ecb_popcount32(x) __builtin_popcount (x)
701 /* no popcountll */
702#else
703 ecb_function_ int ecb_ctz32 (uint32_t x) ecb_const;
704 ecb_function_ int
705 ecb_ctz32 (uint32_t x)
706 {
707 int r = 0;
708
709 x &= ~x + 1; /* this isolates the lowest bit */
710
711#if ECB_branchless_on_i386
712 r += !!(x & 0xaaaaaaaa) << 0;
713 r += !!(x & 0xcccccccc) << 1;
714 r += !!(x & 0xf0f0f0f0) << 2;
715 r += !!(x & 0xff00ff00) << 3;
716 r += !!(x & 0xffff0000) << 4;
717#else
718 if (x & 0xaaaaaaaa) r += 1;
719 if (x & 0xcccccccc) r += 2;
720 if (x & 0xf0f0f0f0) r += 4;
721 if (x & 0xff00ff00) r += 8;
722 if (x & 0xffff0000) r += 16;
723#endif
724
725 return r;
726 }
727
728 ecb_function_ int ecb_ctz64 (uint64_t x) ecb_const;
729 ecb_function_ int
730 ecb_ctz64 (uint64_t x)
731 {
732 int shift = x & 0xffffffffU ? 0 : 32;
733 return ecb_ctz32 (x >> shift) + shift;
734 }
735
736 ecb_function_ int ecb_popcount32 (uint32_t x) ecb_const;
737 ecb_function_ int
738 ecb_popcount32 (uint32_t x)
739 {
740 x -= (x >> 1) & 0x55555555;
741 x = ((x >> 2) & 0x33333333) + (x & 0x33333333);
742 x = ((x >> 4) + x) & 0x0f0f0f0f;
743 x *= 0x01010101;
744
745 return x >> 24;
746 }
747
748 ecb_function_ int ecb_ld32 (uint32_t x) ecb_const;
749 ecb_function_ int ecb_ld32 (uint32_t x)
750 {
751 int r = 0;
752
753 if (x >> 16) { x >>= 16; r += 16; }
754 if (x >> 8) { x >>= 8; r += 8; }
755 if (x >> 4) { x >>= 4; r += 4; }
756 if (x >> 2) { x >>= 2; r += 2; }
757 if (x >> 1) { r += 1; }
758
759 return r;
760 }
761
762 ecb_function_ int ecb_ld64 (uint64_t x) ecb_const;
763 ecb_function_ int ecb_ld64 (uint64_t x)
764 {
765 int r = 0;
766
767 if (x >> 32) { x >>= 32; r += 32; }
768
769 return r + ecb_ld32 (x);
770 }
771#endif
772
773ecb_function_ uint8_t ecb_bitrev8 (uint8_t x) ecb_const;
774ecb_function_ uint8_t ecb_bitrev8 (uint8_t x)
775{
776 return ( (x * 0x0802U & 0x22110U)
777 | (x * 0x8020U & 0x88440U)) * 0x10101U >> 16;
778}
779
780ecb_function_ uint16_t ecb_bitrev16 (uint16_t x) ecb_const;
781ecb_function_ uint16_t ecb_bitrev16 (uint16_t x)
782{
783 x = ((x >> 1) & 0x5555) | ((x & 0x5555) << 1);
784 x = ((x >> 2) & 0x3333) | ((x & 0x3333) << 2);
785 x = ((x >> 4) & 0x0f0f) | ((x & 0x0f0f) << 4);
786 x = ( x >> 8 ) | ( x << 8);
787
788 return x;
789}
790
791ecb_function_ uint32_t ecb_bitrev32 (uint32_t x) ecb_const;
792ecb_function_ uint32_t ecb_bitrev32 (uint32_t x)
793{
794 x = ((x >> 1) & 0x55555555) | ((x & 0x55555555) << 1);
795 x = ((x >> 2) & 0x33333333) | ((x & 0x33333333) << 2);
796 x = ((x >> 4) & 0x0f0f0f0f) | ((x & 0x0f0f0f0f) << 4);
797 x = ((x >> 8) & 0x00ff00ff) | ((x & 0x00ff00ff) << 8);
798 x = ( x >> 16 ) | ( x << 16);
799
800 return x;
801}
802
803/* popcount64 is only available on 64 bit cpus as gcc builtin */
804/* so for this version we are lazy */
805ecb_function_ int ecb_popcount64 (uint64_t x) ecb_const;
806ecb_function_ int
807ecb_popcount64 (uint64_t x)
808{
809 return ecb_popcount32 (x) + ecb_popcount32 (x >> 32);
810}
811
812ecb_inline uint8_t ecb_rotl8 (uint8_t x, unsigned int count) ecb_const;
813ecb_inline uint8_t ecb_rotr8 (uint8_t x, unsigned int count) ecb_const;
814ecb_inline uint16_t ecb_rotl16 (uint16_t x, unsigned int count) ecb_const;
815ecb_inline uint16_t ecb_rotr16 (uint16_t x, unsigned int count) ecb_const;
816ecb_inline uint32_t ecb_rotl32 (uint32_t x, unsigned int count) ecb_const;
817ecb_inline uint32_t ecb_rotr32 (uint32_t x, unsigned int count) ecb_const;
818ecb_inline uint64_t ecb_rotl64 (uint64_t x, unsigned int count) ecb_const;
819ecb_inline uint64_t ecb_rotr64 (uint64_t x, unsigned int count) ecb_const;
820
821ecb_inline uint8_t ecb_rotl8 (uint8_t x, unsigned int count) { return (x >> ( 8 - count)) | (x << count); }
822ecb_inline uint8_t ecb_rotr8 (uint8_t x, unsigned int count) { return (x << ( 8 - count)) | (x >> count); }
823ecb_inline uint16_t ecb_rotl16 (uint16_t x, unsigned int count) { return (x >> (16 - count)) | (x << count); }
824ecb_inline uint16_t ecb_rotr16 (uint16_t x, unsigned int count) { return (x << (16 - count)) | (x >> count); }
825ecb_inline uint32_t ecb_rotl32 (uint32_t x, unsigned int count) { return (x >> (32 - count)) | (x << count); }
826ecb_inline uint32_t ecb_rotr32 (uint32_t x, unsigned int count) { return (x << (32 - count)) | (x >> count); }
827ecb_inline uint64_t ecb_rotl64 (uint64_t x, unsigned int count) { return (x >> (64 - count)) | (x << count); }
828ecb_inline uint64_t ecb_rotr64 (uint64_t x, unsigned int count) { return (x << (64 - count)) | (x >> count); }
829
830#if ECB_GCC_VERSION(4,3)
831 #define ecb_bswap16(x) (__builtin_bswap32 (x) >> 16)
832 #define ecb_bswap32(x) __builtin_bswap32 (x)
833 #define ecb_bswap64(x) __builtin_bswap64 (x)
834#else
835 ecb_function_ uint16_t ecb_bswap16 (uint16_t x) ecb_const;
836 ecb_function_ uint16_t
837 ecb_bswap16 (uint16_t x)
838 {
839 return ecb_rotl16 (x, 8);
840 }
841
842 ecb_function_ uint32_t ecb_bswap32 (uint32_t x) ecb_const;
843 ecb_function_ uint32_t
844 ecb_bswap32 (uint32_t x)
845 {
846 return (((uint32_t)ecb_bswap16 (x)) << 16) | ecb_bswap16 (x >> 16);
847 }
848
849 ecb_function_ uint64_t ecb_bswap64 (uint64_t x) ecb_const;
850 ecb_function_ uint64_t
851 ecb_bswap64 (uint64_t x)
852 {
853 return (((uint64_t)ecb_bswap32 (x)) << 32) | ecb_bswap32 (x >> 32);
854 }
855#endif
856
857#if ECB_GCC_VERSION(4,5)
858 #define ecb_unreachable() __builtin_unreachable ()
859#else
860 /* this seems to work fine, but gcc always emits a warning for it :/ */
861 ecb_inline void ecb_unreachable (void) ecb_noreturn;
862 ecb_inline void ecb_unreachable (void) { }
863#endif
864
865/* try to tell the compiler that some condition is definitely true */
866#define ecb_assume(cond) do { if (!(cond)) ecb_unreachable (); } while (0)
867
868ecb_inline unsigned char ecb_byteorder_helper (void) ecb_const;
869ecb_inline unsigned char
870ecb_byteorder_helper (void)
871{
872 const uint32_t u = 0x11223344;
873 return *(unsigned char *)&u;
874}
875
876ecb_inline ecb_bool ecb_big_endian (void) ecb_const;
877ecb_inline ecb_bool ecb_big_endian (void) { return ecb_byteorder_helper () == 0x11; }
878ecb_inline ecb_bool ecb_little_endian (void) ecb_const;
879ecb_inline ecb_bool ecb_little_endian (void) { return ecb_byteorder_helper () == 0x44; }
880
881#if ECB_GCC_VERSION(3,0) || ECB_C99
882 #define ecb_mod(m,n) ((m) % (n) + ((m) % (n) < 0 ? (n) : 0))
883#else
884 #define ecb_mod(m,n) ((m) < 0 ? ((n) - 1 - ((-1 - (m)) % (n))) : ((m) % (n)))
885#endif
886
887#if __cplusplus
888 template<typename T>
889 static inline T ecb_div_rd (T val, T div)
890 {
891 return val < 0 ? - ((-val + div - 1) / div) : (val ) / div;
892 }
893 template<typename T>
894 static inline T ecb_div_ru (T val, T div)
895 {
896 return val < 0 ? - ((-val ) / div) : (val + div - 1) / div;
897 }
898#else
899 #define ecb_div_rd(val,div) ((val) < 0 ? - ((-(val) + (div) - 1) / (div)) : ((val) ) / (div))
900 #define ecb_div_ru(val,div) ((val) < 0 ? - ((-(val) ) / (div)) : ((val) + (div) - 1) / (div))
901#endif
902
903#if ecb_cplusplus_does_not_suck
904 /* does not work for local types (http://www.open-std.org/jtc1/sc22/wg21/docs/papers/2008/n2657.htm) */
905 template<typename T, int N>
906 static inline int ecb_array_length (const T (&arr)[N])
907 {
908 return N;
909 }
910#else
911 #define ecb_array_length(name) (sizeof (name) / sizeof (name [0]))
912#endif
913
914#endif
915
916/* ECB.H END */
917
918#if ECB_MEMORY_FENCE_NEEDS_PTHREADS
919/* if your architecture doesn't need memory fences, e.g. because it is
920 * single-cpu/core, or if you use libev in a project that doesn't use libev
921 * from multiple threads, then you can define ECB_AVOID_PTHREADS when compiling
922 * libev, in which cases the memory fences become nops.
923 * alternatively, you can remove this #error and link against libpthread,
924 * which will then provide the memory fences.
925 */
926# error "memory fences not defined for your architecture, please report"
927#endif
928
929#ifndef ECB_MEMORY_FENCE
930# define ECB_MEMORY_FENCE do { } while (0)
931# define ECB_MEMORY_FENCE_ACQUIRE ECB_MEMORY_FENCE
932# define ECB_MEMORY_FENCE_RELEASE ECB_MEMORY_FENCE
933#endif
934
935#define expect_false(cond) ecb_expect_false (cond)
936#define expect_true(cond) ecb_expect_true (cond)
937#define noinline ecb_noinline
938
488#define inline_size static inline 939#define inline_size ecb_inline
489 940
490#if EV_FEATURE_CODE 941#if EV_FEATURE_CODE
491# define inline_speed static inline 942# define inline_speed ecb_inline
492#else 943#else
493# define inline_speed static noinline 944# define inline_speed static noinline
494#endif 945#endif
495 946
496#define NUMPRI (EV_MAXPRI - EV_MINPRI + 1) 947#define NUMPRI (EV_MAXPRI - EV_MINPRI + 1)
… …
511#define ev_active(w) ((W)(w))->active 962#define ev_active(w) ((W)(w))->active
512#define ev_at(w) ((WT)(w))->at 963#define ev_at(w) ((WT)(w))->at
513 964
514#if EV_USE_REALTIME 965#if EV_USE_REALTIME
515/* sig_atomic_t is used to avoid per-thread variables or locking but still */ 966/* sig_atomic_t is used to avoid per-thread variables or locking but still */
516/* giving it a reasonably high chance of working on typical architetcures */ 967/* giving it a reasonably high chance of working on typical architectures */
517static EV_ATOMIC_T have_realtime; /* did clock_gettime (CLOCK_REALTIME) work? */ 968static EV_ATOMIC_T have_realtime; /* did clock_gettime (CLOCK_REALTIME) work? */
518#endif 969#endif
519 970
520#if EV_USE_MONOTONIC 971#if EV_USE_MONOTONIC
521static EV_ATOMIC_T have_monotonic; /* did clock_gettime (CLOCK_MONOTONIC) work? */ 972static EV_ATOMIC_T have_monotonic; /* did clock_gettime (CLOCK_MONOTONIC) work? */
… …
535# include "ev_win32.c" 986# include "ev_win32.c"
536#endif 987#endif
537 988
538/*****************************************************************************/ 989/*****************************************************************************/
539 990
991/* define a suitable floor function (only used by periodics atm) */
992
993#if EV_USE_FLOOR
994# include <math.h>
995# define ev_floor(v) floor (v)
996#else
997
998#include <float.h>
999
1000/* a floor() replacement function, should be independent of ev_tstamp type */
1001static ev_tstamp noinline
1002ev_floor (ev_tstamp v)
1003{
1004 /* the choice of shift factor is not terribly important */
1005#if FLT_RADIX != 2 /* assume FLT_RADIX == 10 */
1006 const ev_tstamp shift = sizeof (unsigned long) >= 8 ? 10000000000000000000. : 1000000000.;
1007#else
1008 const ev_tstamp shift = sizeof (unsigned long) >= 8 ? 18446744073709551616. : 4294967296.;
1009#endif
1010
1011 /* argument too large for an unsigned long? */
1012 if (expect_false (v >= shift))
1013 {
1014 ev_tstamp f;
1015
1016 if (v == v - 1.)
1017 return v; /* very large number */
1018
1019 f = shift * ev_floor (v * (1. / shift));
1020 return f + ev_floor (v - f);
1021 }
1022
1023 /* special treatment for negative args? */
1024 if (expect_false (v < 0.))
1025 {
1026 ev_tstamp f = -ev_floor (-v);
1027
1028 return f - (f == v ? 0 : 1);
1029 }
1030
1031 /* fits into an unsigned long */
1032 return (unsigned long)v;
1033}
1034
1035#endif
1036
1037/*****************************************************************************/
1038
1039#ifdef __linux
1040# include <sys/utsname.h>
1041#endif
1042
1043static unsigned int noinline ecb_cold
1044ev_linux_version (void)
1045{
1046#ifdef __linux
1047 unsigned int v = 0;
1048 struct utsname buf;
1049 int i;
1050 char *p = buf.release;
1051
1052 if (uname (&buf))
1053 return 0;
1054
1055 for (i = 3+1; --i; )
1056 {
1057 unsigned int c = 0;
1058
1059 for (;;)
1060 {
1061 if (*p >= '0' && *p <= '9')
1062 c = c * 10 + *p++ - '0';
1063 else
1064 {
1065 p += *p == '.';
1066 break;
1067 }
1068 }
1069
1070 v = (v << 8) | c;
1071 }
1072
1073 return v;
1074#else
1075 return 0;
1076#endif
1077}
1078
1079/*****************************************************************************/
1080
540#if EV_AVOID_STDIO 1081#if EV_AVOID_STDIO
541static void noinline 1082static void noinline ecb_cold
542ev_printerr (const char *msg) 1083ev_printerr (const char *msg)
543{ 1084{
544 write (STDERR_FILENO, msg, strlen (msg)); 1085 write (STDERR_FILENO, msg, strlen (msg));
545} 1086}
546#endif 1087#endif
547 1088
548static void (*syserr_cb)(const char *msg); 1089static void (*syserr_cb)(const char *msg);
549 1090
550void 1091void ecb_cold
551ev_set_syserr_cb (void (*cb)(const char *msg)) 1092ev_set_syserr_cb (void (*cb)(const char *msg))
552{ 1093{
553 syserr_cb = cb; 1094 syserr_cb = cb;
554} 1095}
555 1096
556static void noinline 1097static void noinline ecb_cold
557ev_syserr (const char *msg) 1098ev_syserr (const char *msg)
558{ 1099{
559 if (!msg) 1100 if (!msg)
560 msg = "(libev) system error"; 1101 msg = "(libev) system error";
561 1102
562 if (syserr_cb) 1103 if (syserr_cb)
563 syserr_cb (msg); 1104 syserr_cb (msg);
564 else 1105 else
565 { 1106 {
566#if EV_AVOID_STDIO 1107#if EV_AVOID_STDIO
567 const char *err = strerror (errno);
568
569 ev_printerr (msg); 1108 ev_printerr (msg);
570 ev_printerr (": "); 1109 ev_printerr (": ");
571 ev_printerr (err); 1110 ev_printerr (strerror (errno));
572 ev_printerr ("\n"); 1111 ev_printerr ("\n");
573#else 1112#else
574 perror (msg); 1113 perror (msg);
575#endif 1114#endif
576 abort (); 1115 abort ();
… …
596#endif 1135#endif
597} 1136}
598 1137
599static void *(*alloc)(void *ptr, long size) = ev_realloc_emul; 1138static void *(*alloc)(void *ptr, long size) = ev_realloc_emul;
600 1139
601void 1140void ecb_cold
602ev_set_allocator (void *(*cb)(void *ptr, long size)) 1141ev_set_allocator (void *(*cb)(void *ptr, long size))
603{ 1142{
604 alloc = cb; 1143 alloc = cb;
605} 1144}
606 1145
… …
610 ptr = alloc (ptr, size); 1149 ptr = alloc (ptr, size);
611 1150
612 if (!ptr && size) 1151 if (!ptr && size)
613 { 1152 {
614#if EV_AVOID_STDIO 1153#if EV_AVOID_STDIO
615 ev_printerr ("libev: memory allocation failed, aborting.\n"); 1154 ev_printerr ("(libev) memory allocation failed, aborting.\n");
616#else 1155#else
617 fprintf (stderr, "libev: cannot allocate %ld bytes, aborting.", size); 1156 fprintf (stderr, "(libev) cannot allocate %ld bytes, aborting.", size);
618#endif 1157#endif
619 abort (); 1158 abort ();
620 } 1159 }
621 1160
622 return ptr; 1161 return ptr;
… …
639 unsigned char emask; /* the epoll backend stores the actual kernel mask in here */ 1178 unsigned char emask; /* the epoll backend stores the actual kernel mask in here */
640 unsigned char unused; 1179 unsigned char unused;
641#if EV_USE_EPOLL 1180#if EV_USE_EPOLL
642 unsigned int egen; /* generation counter to counter epoll bugs */ 1181 unsigned int egen; /* generation counter to counter epoll bugs */
643#endif 1182#endif
644#if EV_SELECT_IS_WINSOCKET 1183#if EV_SELECT_IS_WINSOCKET || EV_USE_IOCP
645 SOCKET handle; 1184 SOCKET handle;
1185#endif
1186#if EV_USE_IOCP
1187 OVERLAPPED or, ow;
646#endif 1188#endif
647} ANFD; 1189} ANFD;
648 1190
649/* stores the pending event set for a given watcher */ 1191/* stores the pending event set for a given watcher */
650typedef struct 1192typedef struct
… …
692 #undef VAR 1234 #undef VAR
693 }; 1235 };
694 #include "ev_wrap.h" 1236 #include "ev_wrap.h"
695 1237
696 static struct ev_loop default_loop_struct; 1238 static struct ev_loop default_loop_struct;
697 struct ev_loop *ev_default_loop_ptr; 1239 EV_API_DECL struct ev_loop *ev_default_loop_ptr = 0; /* needs to be initialised to make it a definition despite extern */
698 1240
699#else 1241#else
700 1242
701 ev_tstamp ev_rt_now; 1243 EV_API_DECL ev_tstamp ev_rt_now = 0; /* needs to be initialised to make it a definition despite extern */
702 #define VAR(name,decl) static decl; 1244 #define VAR(name,decl) static decl;
703 #include "ev_vars.h" 1245 #include "ev_vars.h"
704 #undef VAR 1246 #undef VAR
705 1247
706 static int ev_default_loop_ptr; 1248 static int ev_default_loop_ptr;
… …
715# define EV_RELEASE_CB (void)0 1257# define EV_RELEASE_CB (void)0
716# define EV_ACQUIRE_CB (void)0 1258# define EV_ACQUIRE_CB (void)0
717# define EV_INVOKE_PENDING ev_invoke_pending (EV_A) 1259# define EV_INVOKE_PENDING ev_invoke_pending (EV_A)
718#endif 1260#endif
719 1261
720#define EVUNLOOP_RECURSE 0x80 1262#define EVBREAK_RECURSE 0x80
721 1263
722/*****************************************************************************/ 1264/*****************************************************************************/
723 1265
724#ifndef EV_HAVE_EV_TIME 1266#ifndef EV_HAVE_EV_TIME
725ev_tstamp 1267ev_tstamp
… …
769 if (delay > 0.) 1311 if (delay > 0.)
770 { 1312 {
771#if EV_USE_NANOSLEEP 1313#if EV_USE_NANOSLEEP
772 struct timespec ts; 1314 struct timespec ts;
773 1315
774 ts.tv_sec = (time_t)delay; 1316 EV_TS_SET (ts, delay);
775 ts.tv_nsec = (long)((delay - (ev_tstamp)(ts.tv_sec)) * 1e9);
776
777 nanosleep (&ts, 0); 1317 nanosleep (&ts, 0);
778#elif defined(_WIN32) 1318#elif defined(_WIN32)
779 Sleep ((unsigned long)(delay * 1e3)); 1319 Sleep ((unsigned long)(delay * 1e3));
780#else 1320#else
781 struct timeval tv; 1321 struct timeval tv;
782 1322
783 tv.tv_sec = (time_t)delay;
784 tv.tv_usec = (long)((delay - (ev_tstamp)(tv.tv_sec)) * 1e6);
785
786 /* here we rely on sys/time.h + sys/types.h + unistd.h providing select */ 1323 /* here we rely on sys/time.h + sys/types.h + unistd.h providing select */
787 /* something not guaranteed by newer posix versions, but guaranteed */ 1324 /* something not guaranteed by newer posix versions, but guaranteed */
788 /* by older ones */ 1325 /* by older ones */
1326 EV_TV_SET (tv, delay);
789 select (0, 0, 0, 0, &tv); 1327 select (0, 0, 0, 0, &tv);
790#endif 1328#endif
791 } 1329 }
792} 1330}
793 1331
794/*****************************************************************************/ 1332/*****************************************************************************/
795 1333
796#define MALLOC_ROUND 4096 /* prefer to allocate in chunks of this size, must be 2**n and >> 4 longs */ 1334#define MALLOC_ROUND 4096 /* prefer to allocate in chunks of this size, must be 2**n and >> 4 longs */
797 1335
798/* find a suitable new size for the given array, */ 1336/* find a suitable new size for the given array, */
799/* hopefully by rounding to a ncie-to-malloc size */ 1337/* hopefully by rounding to a nice-to-malloc size */
800inline_size int 1338inline_size int
801array_nextsize (int elem, int cur, int cnt) 1339array_nextsize (int elem, int cur, int cnt)
802{ 1340{
803 int ncur = cur + 1; 1341 int ncur = cur + 1;
804 1342
805 do 1343 do
806 ncur <<= 1; 1344 ncur <<= 1;
807 while (cnt > ncur); 1345 while (cnt > ncur);
808 1346
809 /* if size is large, round to MALLOC_ROUND - 4 * longs to accomodate malloc overhead */ 1347 /* if size is large, round to MALLOC_ROUND - 4 * longs to accommodate malloc overhead */
810 if (elem * ncur > MALLOC_ROUND - sizeof (void *) * 4) 1348 if (elem * ncur > MALLOC_ROUND - sizeof (void *) * 4)
811 { 1349 {
812 ncur *= elem; 1350 ncur *= elem;
813 ncur = (ncur + elem + (MALLOC_ROUND - 1) + sizeof (void *) * 4) & ~(MALLOC_ROUND - 1); 1351 ncur = (ncur + elem + (MALLOC_ROUND - 1) + sizeof (void *) * 4) & ~(MALLOC_ROUND - 1);
814 ncur = ncur - sizeof (void *) * 4; 1352 ncur = ncur - sizeof (void *) * 4;
… …
816 } 1354 }
817 1355
818 return ncur; 1356 return ncur;
819} 1357}
820 1358
821static noinline void * 1359static void * noinline ecb_cold
822array_realloc (int elem, void *base, int *cur, int cnt) 1360array_realloc (int elem, void *base, int *cur, int cnt)
823{ 1361{
824 *cur = array_nextsize (elem, *cur, cnt); 1362 *cur = array_nextsize (elem, *cur, cnt);
825 return ev_realloc (base, elem * *cur); 1363 return ev_realloc (base, elem * *cur);
826} 1364}
… …
829 memset ((void *)(base), 0, sizeof (*(base)) * (count)) 1367 memset ((void *)(base), 0, sizeof (*(base)) * (count))
830 1368
831#define array_needsize(type,base,cur,cnt,init) \ 1369#define array_needsize(type,base,cur,cnt,init) \
832 if (expect_false ((cnt) > (cur))) \ 1370 if (expect_false ((cnt) > (cur))) \
833 { \ 1371 { \
834 int ocur_ = (cur); \ 1372 int ecb_unused ocur_ = (cur); \
835 (base) = (type *)array_realloc \ 1373 (base) = (type *)array_realloc \
836 (sizeof (type), (base), &(cur), (cnt)); \ 1374 (sizeof (type), (base), &(cur), (cnt)); \
837 init ((base) + (ocur_), (cur) - ocur_); \ 1375 init ((base) + (ocur_), (cur) - ocur_); \
838 } 1376 }
839 1377
… …
939inline_size void 1477inline_size void
940fd_reify (EV_P) 1478fd_reify (EV_P)
941{ 1479{
942 int i; 1480 int i;
943 1481
1482#if EV_SELECT_IS_WINSOCKET || EV_USE_IOCP
1483 for (i = 0; i < fdchangecnt; ++i)
1484 {
1485 int fd = fdchanges [i];
1486 ANFD *anfd = anfds + fd;
1487
1488 if (anfd->reify & EV__IOFDSET && anfd->head)
1489 {
1490 SOCKET handle = EV_FD_TO_WIN32_HANDLE (fd);
1491
1492 if (handle != anfd->handle)
1493 {
1494 unsigned long arg;
1495
1496 assert (("libev: only socket fds supported in this configuration", ioctlsocket (handle, FIONREAD, &arg) == 0));
1497
1498 /* handle changed, but fd didn't - we need to do it in two steps */
1499 backend_modify (EV_A_ fd, anfd->events, 0);
1500 anfd->events = 0;
1501 anfd->handle = handle;
1502 }
1503 }
1504 }
1505#endif
1506
944 for (i = 0; i < fdchangecnt; ++i) 1507 for (i = 0; i < fdchangecnt; ++i)
945 { 1508 {
946 int fd = fdchanges [i]; 1509 int fd = fdchanges [i];
947 ANFD *anfd = anfds + fd; 1510 ANFD *anfd = anfds + fd;
948 ev_io *w; 1511 ev_io *w;
949 1512
950 unsigned char events = 0; 1513 unsigned char o_events = anfd->events;
1514 unsigned char o_reify = anfd->reify;
951 1515
952 for (w = (ev_io *)anfd->head; w; w = (ev_io *)((WL)w)->next) 1516 anfd->reify = 0;
953 events |= (unsigned char)w->events;
954 1517
955#if EV_SELECT_IS_WINSOCKET 1518 /*if (expect_true (o_reify & EV_ANFD_REIFY)) probably a deoptimisation */
956 if (events)
957 { 1519 {
958 unsigned long arg; 1520 anfd->events = 0;
959 anfd->handle = EV_FD_TO_WIN32_HANDLE (fd); 1521
960 assert (("libev: only socket fds supported in this configuration", ioctlsocket (anfd->handle, FIONREAD, &arg) == 0)); 1522 for (w = (ev_io *)anfd->head; w; w = (ev_io *)((WL)w)->next)
1523 anfd->events |= (unsigned char)w->events;
1524
1525 if (o_events != anfd->events)
1526 o_reify = EV__IOFDSET; /* actually |= */
961 } 1527 }
962#endif
963 1528
964 { 1529 if (o_reify & EV__IOFDSET)
965 unsigned char o_events = anfd->events;
966 unsigned char o_reify = anfd->reify;
967
968 anfd->reify = 0;
969 anfd->events = events;
970
971 if (o_events != events || o_reify & EV__IOFDSET)
972 backend_modify (EV_A_ fd, o_events, events); 1530 backend_modify (EV_A_ fd, o_events, anfd->events);
973 }
974 } 1531 }
975 1532
976 fdchangecnt = 0; 1533 fdchangecnt = 0;
977} 1534}
978 1535
… …
990 fdchanges [fdchangecnt - 1] = fd; 1547 fdchanges [fdchangecnt - 1] = fd;
991 } 1548 }
992} 1549}
993 1550
994/* the given fd is invalid/unusable, so make sure it doesn't hurt us anymore */ 1551/* the given fd is invalid/unusable, so make sure it doesn't hurt us anymore */
995inline_speed void 1552inline_speed void ecb_cold
996fd_kill (EV_P_ int fd) 1553fd_kill (EV_P_ int fd)
997{ 1554{
998 ev_io *w; 1555 ev_io *w;
999 1556
1000 while ((w = (ev_io *)anfds [fd].head)) 1557 while ((w = (ev_io *)anfds [fd].head))
… …
1003 ev_feed_event (EV_A_ (W)w, EV_ERROR | EV_READ | EV_WRITE); 1560 ev_feed_event (EV_A_ (W)w, EV_ERROR | EV_READ | EV_WRITE);
1004 } 1561 }
1005} 1562}
1006 1563
1007/* check whether the given fd is actually valid, for error recovery */ 1564/* check whether the given fd is actually valid, for error recovery */
1008inline_size int 1565inline_size int ecb_cold
1009fd_valid (int fd) 1566fd_valid (int fd)
1010{ 1567{
1011#ifdef _WIN32 1568#ifdef _WIN32
1012 return EV_FD_TO_WIN32_HANDLE (fd) != -1; 1569 return EV_FD_TO_WIN32_HANDLE (fd) != -1;
1013#else 1570#else
1014 return fcntl (fd, F_GETFD) != -1; 1571 return fcntl (fd, F_GETFD) != -1;
1015#endif 1572#endif
1016} 1573}
1017 1574
1018/* called on EBADF to verify fds */ 1575/* called on EBADF to verify fds */
1019static void noinline 1576static void noinline ecb_cold
1020fd_ebadf (EV_P) 1577fd_ebadf (EV_P)
1021{ 1578{
1022 int fd; 1579 int fd;
1023 1580
1024 for (fd = 0; fd < anfdmax; ++fd) 1581 for (fd = 0; fd < anfdmax; ++fd)
… …
1026 if (!fd_valid (fd) && errno == EBADF) 1583 if (!fd_valid (fd) && errno == EBADF)
1027 fd_kill (EV_A_ fd); 1584 fd_kill (EV_A_ fd);
1028} 1585}
1029 1586
1030/* called on ENOMEM in select/poll to kill some fds and retry */ 1587/* called on ENOMEM in select/poll to kill some fds and retry */
1031static void noinline 1588static void noinline ecb_cold
1032fd_enomem (EV_P) 1589fd_enomem (EV_P)
1033{ 1590{
1034 int fd; 1591 int fd;
1035 1592
1036 for (fd = anfdmax; fd--; ) 1593 for (fd = anfdmax; fd--; )
… …
1071} 1628}
1072 1629
1073/*****************************************************************************/ 1630/*****************************************************************************/
1074 1631
1075/* 1632/*
1076 * the heap functions want a real array index. array index 0 uis guaranteed to not 1633 * the heap functions want a real array index. array index 0 is guaranteed to not
1077 * be in-use at any time. the first heap entry is at array [HEAP0]. DHEAP gives 1634 * be in-use at any time. the first heap entry is at array [HEAP0]. DHEAP gives
1078 * the branching factor of the d-tree. 1635 * the branching factor of the d-tree.
1079 */ 1636 */
1080 1637
1081/* 1638/*
… …
1231 1788
1232/*****************************************************************************/ 1789/*****************************************************************************/
1233 1790
1234#if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE 1791#if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE
1235 1792
1236static void noinline 1793static void noinline ecb_cold
1237evpipe_init (EV_P) 1794evpipe_init (EV_P)
1238{ 1795{
1239 if (!ev_is_active (&pipe_w)) 1796 if (!ev_is_active (&pipe_w))
1240 { 1797 {
1241# if EV_USE_EVENTFD 1798# if EV_USE_EVENTFD
… …
1263 ev_io_start (EV_A_ &pipe_w); 1820 ev_io_start (EV_A_ &pipe_w);
1264 ev_unref (EV_A); /* watcher should not keep loop alive */ 1821 ev_unref (EV_A); /* watcher should not keep loop alive */
1265 } 1822 }
1266} 1823}
1267 1824
1268inline_size void 1825inline_speed void
1269evpipe_write (EV_P_ EV_ATOMIC_T *flag) 1826evpipe_write (EV_P_ EV_ATOMIC_T *flag)
1270{ 1827{
1271 if (!*flag) 1828 if (expect_true (*flag))
1829 return;
1830
1831 *flag = 1;
1832
1833 ECB_MEMORY_FENCE_RELEASE; /* make sure flag is visible before the wakeup */
1834
1835 pipe_write_skipped = 1;
1836
1837 ECB_MEMORY_FENCE; /* make sure pipe_write_skipped is visible before we check pipe_write_wanted */
1838
1839 if (pipe_write_wanted)
1272 { 1840 {
1841 int old_errno;
1842
1843 pipe_write_skipped = 0; /* just an optimisation, no fence needed */
1844
1273 int old_errno = errno; /* save errno because write might clobber it */ 1845 old_errno = errno; /* save errno because write will clobber it */
1274 char dummy;
1275
1276 *flag = 1;
1277 1846
1278#if EV_USE_EVENTFD 1847#if EV_USE_EVENTFD
1279 if (evfd >= 0) 1848 if (evfd >= 0)
1280 { 1849 {
1281 uint64_t counter = 1; 1850 uint64_t counter = 1;
1282 write (evfd, &counter, sizeof (uint64_t)); 1851 write (evfd, &counter, sizeof (uint64_t));
1283 } 1852 }
1284 else 1853 else
1285#endif 1854#endif
1855 {
1856 /* win32 people keep sending patches that change this write() to send() */
1857 /* and then run away. but send() is wrong, it wants a socket handle on win32 */
1858 /* so when you think this write should be a send instead, please find out */
1859 /* where your send() is from - it's definitely not the microsoft send, and */
1860 /* tell me. thank you. */
1286 write (evpipe [1], &dummy, 1); 1861 write (evpipe [1], &(evpipe [1]), 1);
1862 }
1287 1863
1288 errno = old_errno; 1864 errno = old_errno;
1289 } 1865 }
1290} 1866}
1291 1867
… …
1294static void 1870static void
1295pipecb (EV_P_ ev_io *iow, int revents) 1871pipecb (EV_P_ ev_io *iow, int revents)
1296{ 1872{
1297 int i; 1873 int i;
1298 1874
1875 if (revents & EV_READ)
1876 {
1299#if EV_USE_EVENTFD 1877#if EV_USE_EVENTFD
1300 if (evfd >= 0) 1878 if (evfd >= 0)
1301 { 1879 {
1302 uint64_t counter; 1880 uint64_t counter;
1303 read (evfd, &counter, sizeof (uint64_t)); 1881 read (evfd, &counter, sizeof (uint64_t));
1304 } 1882 }
1305 else 1883 else
1306#endif 1884#endif
1307 { 1885 {
1308 char dummy; 1886 char dummy;
1887 /* see discussion in evpipe_write when you think this read should be recv in win32 */
1309 read (evpipe [0], &dummy, 1); 1888 read (evpipe [0], &dummy, 1);
1889 }
1310 } 1890 }
1311 1891
1892 pipe_write_skipped = 0;
1893
1894#if EV_SIGNAL_ENABLE
1312 if (sig_pending) 1895 if (sig_pending)
1313 { 1896 {
1314 sig_pending = 0; 1897 sig_pending = 0;
1315 1898
1316 for (i = EV_NSIG - 1; i--; ) 1899 for (i = EV_NSIG - 1; i--; )
1317 if (expect_false (signals [i].pending)) 1900 if (expect_false (signals [i].pending))
1318 ev_feed_signal_event (EV_A_ i + 1); 1901 ev_feed_signal_event (EV_A_ i + 1);
1319 } 1902 }
1903#endif
1320 1904
1321#if EV_ASYNC_ENABLE 1905#if EV_ASYNC_ENABLE
1322 if (async_pending) 1906 if (async_pending)
1323 { 1907 {
1324 async_pending = 0; 1908 async_pending = 0;
… …
1333#endif 1917#endif
1334} 1918}
1335 1919
1336/*****************************************************************************/ 1920/*****************************************************************************/
1337 1921
1922void
1923ev_feed_signal (int signum)
1924{
1925#if EV_MULTIPLICITY
1926 EV_P = signals [signum - 1].loop;
1927
1928 if (!EV_A)
1929 return;
1930#endif
1931
1932 if (!ev_active (&pipe_w))
1933 return;
1934
1935 signals [signum - 1].pending = 1;
1936 evpipe_write (EV_A_ &sig_pending);
1937}
1938
1338static void 1939static void
1339ev_sighandler (int signum) 1940ev_sighandler (int signum)
1340{ 1941{
1341#if EV_MULTIPLICITY
1342 EV_P = signals [signum - 1].loop;
1343#endif
1344
1345#ifdef _WIN32 1942#ifdef _WIN32
1346 signal (signum, ev_sighandler); 1943 signal (signum, ev_sighandler);
1347#endif 1944#endif
1348 1945
1349 signals [signum - 1].pending = 1; 1946 ev_feed_signal (signum);
1350 evpipe_write (EV_A_ &sig_pending);
1351} 1947}
1352 1948
1353void noinline 1949void noinline
1354ev_feed_signal_event (EV_P_ int signum) 1950ev_feed_signal_event (EV_P_ int signum)
1355{ 1951{
… …
1455 2051
1456#endif 2052#endif
1457 2053
1458/*****************************************************************************/ 2054/*****************************************************************************/
1459 2055
2056#if EV_USE_IOCP
2057# include "ev_iocp.c"
2058#endif
1460#if EV_USE_PORT 2059#if EV_USE_PORT
1461# include "ev_port.c" 2060# include "ev_port.c"
1462#endif 2061#endif
1463#if EV_USE_KQUEUE 2062#if EV_USE_KQUEUE
1464# include "ev_kqueue.c" 2063# include "ev_kqueue.c"
… …
1471#endif 2070#endif
1472#if EV_USE_SELECT 2071#if EV_USE_SELECT
1473# include "ev_select.c" 2072# include "ev_select.c"
1474#endif 2073#endif
1475 2074
1476int 2075int ecb_cold
1477ev_version_major (void) 2076ev_version_major (void)
1478{ 2077{
1479 return EV_VERSION_MAJOR; 2078 return EV_VERSION_MAJOR;
1480} 2079}
1481 2080
1482int 2081int ecb_cold
1483ev_version_minor (void) 2082ev_version_minor (void)
1484{ 2083{
1485 return EV_VERSION_MINOR; 2084 return EV_VERSION_MINOR;
1486} 2085}
1487 2086
1488/* return true if we are running with elevated privileges and should ignore env variables */ 2087/* return true if we are running with elevated privileges and should ignore env variables */
1489int inline_size 2088int inline_size ecb_cold
1490enable_secure (void) 2089enable_secure (void)
1491{ 2090{
1492#ifdef _WIN32 2091#ifdef _WIN32
1493 return 0; 2092 return 0;
1494#else 2093#else
1495 return getuid () != geteuid () 2094 return getuid () != geteuid ()
1496 || getgid () != getegid (); 2095 || getgid () != getegid ();
1497#endif 2096#endif
1498} 2097}
1499 2098
1500unsigned int 2099unsigned int ecb_cold
1501ev_supported_backends (void) 2100ev_supported_backends (void)
1502{ 2101{
1503 unsigned int flags = 0; 2102 unsigned int flags = 0;
1504 2103
1505 if (EV_USE_PORT ) flags |= EVBACKEND_PORT; 2104 if (EV_USE_PORT ) flags |= EVBACKEND_PORT;
… …
1509 if (EV_USE_SELECT) flags |= EVBACKEND_SELECT; 2108 if (EV_USE_SELECT) flags |= EVBACKEND_SELECT;
1510 2109
1511 return flags; 2110 return flags;
1512} 2111}
1513 2112
1514unsigned int 2113unsigned int ecb_cold
1515ev_recommended_backends (void) 2114ev_recommended_backends (void)
1516{ 2115{
1517 unsigned int flags = ev_supported_backends (); 2116 unsigned int flags = ev_supported_backends ();
1518 2117
1519#ifndef __NetBSD__ 2118#ifndef __NetBSD__
… …
1531#endif 2130#endif
1532 2131
1533 return flags; 2132 return flags;
1534} 2133}
1535 2134
1536unsigned int 2135unsigned int ecb_cold
1537ev_embeddable_backends (void) 2136ev_embeddable_backends (void)
1538{ 2137{
1539 int flags = EVBACKEND_EPOLL | EVBACKEND_KQUEUE | EVBACKEND_PORT; 2138 int flags = EVBACKEND_EPOLL | EVBACKEND_KQUEUE | EVBACKEND_PORT;
1540 2139
1541 /* epoll embeddability broken on all linux versions up to at least 2.6.23 */ 2140 /* epoll embeddability broken on all linux versions up to at least 2.6.23 */
1542 /* please fix it and tell me how to detect the fix */ 2141 if (ev_linux_version () < 0x020620) /* disable it on linux < 2.6.32 */
1543 flags &= ~EVBACKEND_EPOLL; 2142 flags &= ~EVBACKEND_EPOLL;
1544 2143
1545 return flags; 2144 return flags;
1546} 2145}
1547 2146
1548unsigned int 2147unsigned int
… …
1586ev_userdata (EV_P) 2185ev_userdata (EV_P)
1587{ 2186{
1588 return userdata; 2187 return userdata;
1589} 2188}
1590 2189
2190void
1591void ev_set_invoke_pending_cb (EV_P_ void (*invoke_pending_cb)(EV_P)) 2191ev_set_invoke_pending_cb (EV_P_ void (*invoke_pending_cb)(EV_P))
1592{ 2192{
1593 invoke_cb = invoke_pending_cb; 2193 invoke_cb = invoke_pending_cb;
1594} 2194}
1595 2195
2196void
1596void ev_set_loop_release_cb (EV_P_ void (*release)(EV_P), void (*acquire)(EV_P)) 2197ev_set_loop_release_cb (EV_P_ void (*release)(EV_P), void (*acquire)(EV_P))
1597{ 2198{
1598 release_cb = release; 2199 release_cb = release;
1599 acquire_cb = acquire; 2200 acquire_cb = acquire;
1600} 2201}
1601#endif 2202#endif
1602 2203
1603/* initialise a loop structure, must be zero-initialised */ 2204/* initialise a loop structure, must be zero-initialised */
1604static void noinline 2205static void noinline ecb_cold
1605loop_init (EV_P_ unsigned int flags) 2206loop_init (EV_P_ unsigned int flags)
1606{ 2207{
1607 if (!backend) 2208 if (!backend)
1608 { 2209 {
2210 origflags = flags;
2211
1609#if EV_USE_REALTIME 2212#if EV_USE_REALTIME
1610 if (!have_realtime) 2213 if (!have_realtime)
1611 { 2214 {
1612 struct timespec ts; 2215 struct timespec ts;
1613 2216
… …
1635 if (!(flags & EVFLAG_NOENV) 2238 if (!(flags & EVFLAG_NOENV)
1636 && !enable_secure () 2239 && !enable_secure ()
1637 && getenv ("LIBEV_FLAGS")) 2240 && getenv ("LIBEV_FLAGS"))
1638 flags = atoi (getenv ("LIBEV_FLAGS")); 2241 flags = atoi (getenv ("LIBEV_FLAGS"));
1639 2242
1640 ev_rt_now = ev_time (); 2243 ev_rt_now = ev_time ();
1641 mn_now = get_clock (); 2244 mn_now = get_clock ();
1642 now_floor = mn_now; 2245 now_floor = mn_now;
1643 rtmn_diff = ev_rt_now - mn_now; 2246 rtmn_diff = ev_rt_now - mn_now;
1644#if EV_FEATURE_API 2247#if EV_FEATURE_API
1645 invoke_cb = ev_invoke_pending; 2248 invoke_cb = ev_invoke_pending;
1646#endif 2249#endif
1647 2250
1648 io_blocktime = 0.; 2251 io_blocktime = 0.;
1649 timeout_blocktime = 0.; 2252 timeout_blocktime = 0.;
1650 backend = 0; 2253 backend = 0;
1651 backend_fd = -1; 2254 backend_fd = -1;
1652 sig_pending = 0; 2255 sig_pending = 0;
1653#if EV_ASYNC_ENABLE 2256#if EV_ASYNC_ENABLE
1654 async_pending = 0; 2257 async_pending = 0;
1655#endif 2258#endif
2259 pipe_write_skipped = 0;
2260 pipe_write_wanted = 0;
1656#if EV_USE_INOTIFY 2261#if EV_USE_INOTIFY
1657 fs_fd = flags & EVFLAG_NOINOTIFY ? -1 : -2; 2262 fs_fd = flags & EVFLAG_NOINOTIFY ? -1 : -2;
1658#endif 2263#endif
1659#if EV_USE_SIGNALFD 2264#if EV_USE_SIGNALFD
1660 sigfd = flags & EVFLAG_SIGNALFD ? -2 : -1; 2265 sigfd = flags & EVFLAG_SIGNALFD ? -2 : -1;
1661#endif 2266#endif
1662 2267
1663 if (!(flags & 0x0000ffffU)) 2268 if (!(flags & EVBACKEND_MASK))
1664 flags |= ev_recommended_backends (); 2269 flags |= ev_recommended_backends ();
1665 2270
2271#if EV_USE_IOCP
2272 if (!backend && (flags & EVBACKEND_IOCP )) backend = iocp_init (EV_A_ flags);
2273#endif
1666#if EV_USE_PORT 2274#if EV_USE_PORT
1667 if (!backend && (flags & EVBACKEND_PORT )) backend = port_init (EV_A_ flags); 2275 if (!backend && (flags & EVBACKEND_PORT )) backend = port_init (EV_A_ flags);
1668#endif 2276#endif
1669#if EV_USE_KQUEUE 2277#if EV_USE_KQUEUE
1670 if (!backend && (flags & EVBACKEND_KQUEUE)) backend = kqueue_init (EV_A_ flags); 2278 if (!backend && (flags & EVBACKEND_KQUEUE)) backend = kqueue_init (EV_A_ flags);
… …
1687#endif 2295#endif
1688 } 2296 }
1689} 2297}
1690 2298
1691/* free up a loop structure */ 2299/* free up a loop structure */
1692static void noinline 2300void ecb_cold
1693loop_destroy (EV_P) 2301ev_loop_destroy (EV_P)
1694{ 2302{
1695 int i; 2303 int i;
2304
2305#if EV_MULTIPLICITY
2306 /* mimic free (0) */
2307 if (!EV_A)
2308 return;
2309#endif
2310
2311#if EV_CLEANUP_ENABLE
2312 /* queue cleanup watchers (and execute them) */
2313 if (expect_false (cleanupcnt))
2314 {
2315 queue_events (EV_A_ (W *)cleanups, cleanupcnt, EV_CLEANUP);
2316 EV_INVOKE_PENDING;
2317 }
2318#endif
2319
2320#if EV_CHILD_ENABLE
2321 if (ev_is_active (&childev))
2322 {
2323 ev_ref (EV_A); /* child watcher */
2324 ev_signal_stop (EV_A_ &childev);
2325 }
2326#endif
1696 2327
1697 if (ev_is_active (&pipe_w)) 2328 if (ev_is_active (&pipe_w))
1698 { 2329 {
1699 /*ev_ref (EV_A);*/ 2330 /*ev_ref (EV_A);*/
1700 /*ev_io_stop (EV_A_ &pipe_w);*/ 2331 /*ev_io_stop (EV_A_ &pipe_w);*/
… …
1722#endif 2353#endif
1723 2354
1724 if (backend_fd >= 0) 2355 if (backend_fd >= 0)
1725 close (backend_fd); 2356 close (backend_fd);
1726 2357
2358#if EV_USE_IOCP
2359 if (backend == EVBACKEND_IOCP ) iocp_destroy (EV_A);
2360#endif
1727#if EV_USE_PORT 2361#if EV_USE_PORT
1728 if (backend == EVBACKEND_PORT ) port_destroy (EV_A); 2362 if (backend == EVBACKEND_PORT ) port_destroy (EV_A);
1729#endif 2363#endif
1730#if EV_USE_KQUEUE 2364#if EV_USE_KQUEUE
1731 if (backend == EVBACKEND_KQUEUE) kqueue_destroy (EV_A); 2365 if (backend == EVBACKEND_KQUEUE) kqueue_destroy (EV_A);
… …
1758 array_free (periodic, EMPTY); 2392 array_free (periodic, EMPTY);
1759#endif 2393#endif
1760#if EV_FORK_ENABLE 2394#if EV_FORK_ENABLE
1761 array_free (fork, EMPTY); 2395 array_free (fork, EMPTY);
1762#endif 2396#endif
2397#if EV_CLEANUP_ENABLE
2398 array_free (cleanup, EMPTY);
2399#endif
1763 array_free (prepare, EMPTY); 2400 array_free (prepare, EMPTY);
1764 array_free (check, EMPTY); 2401 array_free (check, EMPTY);
1765#if EV_ASYNC_ENABLE 2402#if EV_ASYNC_ENABLE
1766 array_free (async, EMPTY); 2403 array_free (async, EMPTY);
1767#endif 2404#endif
1768 2405
1769 backend = 0; 2406 backend = 0;
2407
2408#if EV_MULTIPLICITY
2409 if (ev_is_default_loop (EV_A))
2410#endif
2411 ev_default_loop_ptr = 0;
2412#if EV_MULTIPLICITY
2413 else
2414 ev_free (EV_A);
2415#endif
1770} 2416}
1771 2417
1772#if EV_USE_INOTIFY 2418#if EV_USE_INOTIFY
1773inline_size void infy_fork (EV_P); 2419inline_size void infy_fork (EV_P);
1774#endif 2420#endif
… …
1789 infy_fork (EV_A); 2435 infy_fork (EV_A);
1790#endif 2436#endif
1791 2437
1792 if (ev_is_active (&pipe_w)) 2438 if (ev_is_active (&pipe_w))
1793 { 2439 {
1794 /* this "locks" the handlers against writing to the pipe */ 2440 /* pipe_write_wanted must be false now, so modifying fd vars should be safe */
1795 /* while we modify the fd vars */
1796 sig_pending = 1;
1797#if EV_ASYNC_ENABLE
1798 async_pending = 1;
1799#endif
1800 2441
1801 ev_ref (EV_A); 2442 ev_ref (EV_A);
1802 ev_io_stop (EV_A_ &pipe_w); 2443 ev_io_stop (EV_A_ &pipe_w);
1803 2444
1804#if EV_USE_EVENTFD 2445#if EV_USE_EVENTFD
… …
1822 postfork = 0; 2463 postfork = 0;
1823} 2464}
1824 2465
1825#if EV_MULTIPLICITY 2466#if EV_MULTIPLICITY
1826 2467
1827struct ev_loop * 2468struct ev_loop * ecb_cold
1828ev_loop_new (unsigned int flags) 2469ev_loop_new (unsigned int flags)
1829{ 2470{
1830 EV_P = (struct ev_loop *)ev_malloc (sizeof (struct ev_loop)); 2471 EV_P = (struct ev_loop *)ev_malloc (sizeof (struct ev_loop));
1831 2472
1832 memset (EV_A, 0, sizeof (struct ev_loop)); 2473 memset (EV_A, 0, sizeof (struct ev_loop));
1833 loop_init (EV_A_ flags); 2474 loop_init (EV_A_ flags);
1834 2475
1835 if (ev_backend (EV_A)) 2476 if (ev_backend (EV_A))
1836 return EV_A; 2477 return EV_A;
1837 2478
2479 ev_free (EV_A);
1838 return 0; 2480 return 0;
1839} 2481}
1840 2482
1841void
1842ev_loop_destroy (EV_P)
1843{
1844 loop_destroy (EV_A);
1845 ev_free (loop);
1846}
1847
1848void
1849ev_loop_fork (EV_P)
1850{
1851 postfork = 1; /* must be in line with ev_default_fork */
1852}
1853#endif /* multiplicity */ 2483#endif /* multiplicity */
1854 2484
1855#if EV_VERIFY 2485#if EV_VERIFY
1856static void noinline 2486static void noinline ecb_cold
1857verify_watcher (EV_P_ W w) 2487verify_watcher (EV_P_ W w)
1858{ 2488{
1859 assert (("libev: watcher has invalid priority", ABSPRI (w) >= 0 && ABSPRI (w) < NUMPRI)); 2489 assert (("libev: watcher has invalid priority", ABSPRI (w) >= 0 && ABSPRI (w) < NUMPRI));
1860 2490
1861 if (w->pending) 2491 if (w->pending)
1862 assert (("libev: pending watcher not on pending queue", pendings [ABSPRI (w)][w->pending - 1].w == w)); 2492 assert (("libev: pending watcher not on pending queue", pendings [ABSPRI (w)][w->pending - 1].w == w));
1863} 2493}
1864 2494
1865static void noinline 2495static void noinline ecb_cold
1866verify_heap (EV_P_ ANHE *heap, int N) 2496verify_heap (EV_P_ ANHE *heap, int N)
1867{ 2497{
1868 int i; 2498 int i;
1869 2499
1870 for (i = HEAP0; i < N + HEAP0; ++i) 2500 for (i = HEAP0; i < N + HEAP0; ++i)
… …
1875 2505
1876 verify_watcher (EV_A_ (W)ANHE_w (heap [i])); 2506 verify_watcher (EV_A_ (W)ANHE_w (heap [i]));
1877 } 2507 }
1878} 2508}
1879 2509
1880static void noinline 2510static void noinline ecb_cold
1881array_verify (EV_P_ W *ws, int cnt) 2511array_verify (EV_P_ W *ws, int cnt)
1882{ 2512{
1883 while (cnt--) 2513 while (cnt--)
1884 { 2514 {
1885 assert (("libev: active index mismatch", ev_active (ws [cnt]) == cnt + 1)); 2515 assert (("libev: active index mismatch", ev_active (ws [cnt]) == cnt + 1));
… …
1887 } 2517 }
1888} 2518}
1889#endif 2519#endif
1890 2520
1891#if EV_FEATURE_API 2521#if EV_FEATURE_API
1892void 2522void ecb_cold
1893ev_verify (EV_P) 2523ev_verify (EV_P)
1894{ 2524{
1895#if EV_VERIFY 2525#if EV_VERIFY
1896 int i; 2526 int i;
1897 WL w; 2527 WL w;
… …
1932#if EV_FORK_ENABLE 2562#if EV_FORK_ENABLE
1933 assert (forkmax >= forkcnt); 2563 assert (forkmax >= forkcnt);
1934 array_verify (EV_A_ (W *)forks, forkcnt); 2564 array_verify (EV_A_ (W *)forks, forkcnt);
1935#endif 2565#endif
1936 2566
2567#if EV_CLEANUP_ENABLE
2568 assert (cleanupmax >= cleanupcnt);
2569 array_verify (EV_A_ (W *)cleanups, cleanupcnt);
2570#endif
2571
1937#if EV_ASYNC_ENABLE 2572#if EV_ASYNC_ENABLE
1938 assert (asyncmax >= asynccnt); 2573 assert (asyncmax >= asynccnt);
1939 array_verify (EV_A_ (W *)asyncs, asynccnt); 2574 array_verify (EV_A_ (W *)asyncs, asynccnt);
1940#endif 2575#endif
1941 2576
… …
1958#endif 2593#endif
1959} 2594}
1960#endif 2595#endif
1961 2596
1962#if EV_MULTIPLICITY 2597#if EV_MULTIPLICITY
1963struct ev_loop * 2598struct ev_loop * ecb_cold
1964ev_default_loop_init (unsigned int flags)
1965#else 2599#else
1966int 2600int
2601#endif
1967ev_default_loop (unsigned int flags) 2602ev_default_loop (unsigned int flags)
1968#endif
1969{ 2603{
1970 if (!ev_default_loop_ptr) 2604 if (!ev_default_loop_ptr)
1971 { 2605 {
1972#if EV_MULTIPLICITY 2606#if EV_MULTIPLICITY
1973 EV_P = ev_default_loop_ptr = &default_loop_struct; 2607 EV_P = ev_default_loop_ptr = &default_loop_struct;
… …
1992 2626
1993 return ev_default_loop_ptr; 2627 return ev_default_loop_ptr;
1994} 2628}
1995 2629
1996void 2630void
1997ev_default_destroy (void) 2631ev_loop_fork (EV_P)
1998{ 2632{
1999#if EV_MULTIPLICITY
2000 EV_P = ev_default_loop_ptr;
2001#endif
2002
2003 ev_default_loop_ptr = 0;
2004
2005#if EV_CHILD_ENABLE
2006 ev_ref (EV_A); /* child watcher */
2007 ev_signal_stop (EV_A_ &childev);
2008#endif
2009
2010 loop_destroy (EV_A);
2011}
2012
2013void
2014ev_default_fork (void)
2015{
2016#if EV_MULTIPLICITY
2017 EV_P = ev_default_loop_ptr;
2018#endif
2019
2020 postfork = 1; /* must be in line with ev_loop_fork */ 2633 postfork = 1; /* must be in line with ev_default_fork */
2021} 2634}
2022 2635
2023/*****************************************************************************/ 2636/*****************************************************************************/
2024 2637
2025void 2638void
… …
2047 2660
2048 for (pri = NUMPRI; pri--; ) 2661 for (pri = NUMPRI; pri--; )
2049 while (pendingcnt [pri]) 2662 while (pendingcnt [pri])
2050 { 2663 {
2051 ANPENDING *p = pendings [pri] + --pendingcnt [pri]; 2664 ANPENDING *p = pendings [pri] + --pendingcnt [pri];
2052
2053 /*assert (("libev: non-pending watcher on pending list", p->w->pending));*/
2054 /* ^ this is no longer true, as pending_w could be here */
2055 2665
2056 p->w->pending = 0; 2666 p->w->pending = 0;
2057 EV_CB_INVOKE (p->w, p->events); 2667 EV_CB_INVOKE (p->w, p->events);
2058 EV_FREQUENT_CHECK; 2668 EV_FREQUENT_CHECK;
2059 } 2669 }
… …
2121 feed_reverse_done (EV_A_ EV_TIMER); 2731 feed_reverse_done (EV_A_ EV_TIMER);
2122 } 2732 }
2123} 2733}
2124 2734
2125#if EV_PERIODIC_ENABLE 2735#if EV_PERIODIC_ENABLE
2736
2737static void noinline
2738periodic_recalc (EV_P_ ev_periodic *w)
2739{
2740 ev_tstamp interval = w->interval > MIN_INTERVAL ? w->interval : MIN_INTERVAL;
2741 ev_tstamp at = w->offset + interval * ev_floor ((ev_rt_now - w->offset) / interval);
2742
2743 /* the above almost always errs on the low side */
2744 while (at <= ev_rt_now)
2745 {
2746 ev_tstamp nat = at + w->interval;
2747
2748 /* when resolution fails us, we use ev_rt_now */
2749 if (expect_false (nat == at))
2750 {
2751 at = ev_rt_now;
2752 break;
2753 }
2754
2755 at = nat;
2756 }
2757
2758 ev_at (w) = at;
2759}
2760
2126/* make periodics pending */ 2761/* make periodics pending */
2127inline_size void 2762inline_size void
2128periodics_reify (EV_P) 2763periodics_reify (EV_P)
2129{ 2764{
2130 EV_FREQUENT_CHECK; 2765 EV_FREQUENT_CHECK;
… …
2149 ANHE_at_cache (periodics [HEAP0]); 2784 ANHE_at_cache (periodics [HEAP0]);
2150 downheap (periodics, periodiccnt, HEAP0); 2785 downheap (periodics, periodiccnt, HEAP0);
2151 } 2786 }
2152 else if (w->interval) 2787 else if (w->interval)
2153 { 2788 {
2154 ev_at (w) = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval; 2789 periodic_recalc (EV_A_ w);
2155 /* if next trigger time is not sufficiently in the future, put it there */
2156 /* this might happen because of floating point inexactness */
2157 if (ev_at (w) - ev_rt_now < TIME_EPSILON)
2158 {
2159 ev_at (w) += w->interval;
2160
2161 /* if interval is unreasonably low we might still have a time in the past */
2162 /* so correct this. this will make the periodic very inexact, but the user */
2163 /* has effectively asked to get triggered more often than possible */
2164 if (ev_at (w) < ev_rt_now)
2165 ev_at (w) = ev_rt_now;
2166 }
2167
2168 ANHE_at_cache (periodics [HEAP0]); 2790 ANHE_at_cache (periodics [HEAP0]);
2169 downheap (periodics, periodiccnt, HEAP0); 2791 downheap (periodics, periodiccnt, HEAP0);
2170 } 2792 }
2171 else 2793 else
2172 ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */ 2794 ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */
… …
2179 feed_reverse_done (EV_A_ EV_PERIODIC); 2801 feed_reverse_done (EV_A_ EV_PERIODIC);
2180 } 2802 }
2181} 2803}
2182 2804
2183/* simply recalculate all periodics */ 2805/* simply recalculate all periodics */
2184/* TODO: maybe ensure that at leats one event happens when jumping forward? */ 2806/* TODO: maybe ensure that at least one event happens when jumping forward? */
2185static void noinline 2807static void noinline ecb_cold
2186periodics_reschedule (EV_P) 2808periodics_reschedule (EV_P)
2187{ 2809{
2188 int i; 2810 int i;
2189 2811
2190 /* adjust periodics after time jump */ 2812 /* adjust periodics after time jump */
… …
2193 ev_periodic *w = (ev_periodic *)ANHE_w (periodics [i]); 2815 ev_periodic *w = (ev_periodic *)ANHE_w (periodics [i]);
2194 2816
2195 if (w->reschedule_cb) 2817 if (w->reschedule_cb)
2196 ev_at (w) = w->reschedule_cb (w, ev_rt_now); 2818 ev_at (w) = w->reschedule_cb (w, ev_rt_now);
2197 else if (w->interval) 2819 else if (w->interval)
2198 ev_at (w) = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval; 2820 periodic_recalc (EV_A_ w);
2199 2821
2200 ANHE_at_cache (periodics [i]); 2822 ANHE_at_cache (periodics [i]);
2201 } 2823 }
2202 2824
2203 reheap (periodics, periodiccnt); 2825 reheap (periodics, periodiccnt);
2204} 2826}
2205#endif 2827#endif
2206 2828
2207/* adjust all timers by a given offset */ 2829/* adjust all timers by a given offset */
2208static void noinline 2830static void noinline ecb_cold
2209timers_reschedule (EV_P_ ev_tstamp adjust) 2831timers_reschedule (EV_P_ ev_tstamp adjust)
2210{ 2832{
2211 int i; 2833 int i;
2212 2834
2213 for (i = 0; i < timercnt; ++i) 2835 for (i = 0; i < timercnt; ++i)
… …
2250 * doesn't hurt either as we only do this on time-jumps or 2872 * doesn't hurt either as we only do this on time-jumps or
2251 * in the unlikely event of having been preempted here. 2873 * in the unlikely event of having been preempted here.
2252 */ 2874 */
2253 for (i = 4; --i; ) 2875 for (i = 4; --i; )
2254 { 2876 {
2877 ev_tstamp diff;
2255 rtmn_diff = ev_rt_now - mn_now; 2878 rtmn_diff = ev_rt_now - mn_now;
2256 2879
2880 diff = odiff - rtmn_diff;
2881
2257 if (expect_true (fabs (odiff - rtmn_diff) < MIN_TIMEJUMP)) 2882 if (expect_true ((diff < 0. ? -diff : diff) < MIN_TIMEJUMP))
2258 return; /* all is well */ 2883 return; /* all is well */
2259 2884
2260 ev_rt_now = ev_time (); 2885 ev_rt_now = ev_time ();
2261 mn_now = get_clock (); 2886 mn_now = get_clock ();
2262 now_floor = mn_now; 2887 now_floor = mn_now;
… …
2285 mn_now = ev_rt_now; 2910 mn_now = ev_rt_now;
2286 } 2911 }
2287} 2912}
2288 2913
2289void 2914void
2290ev_loop (EV_P_ int flags) 2915ev_run (EV_P_ int flags)
2291{ 2916{
2292#if EV_FEATURE_API 2917#if EV_FEATURE_API
2293 ++loop_depth; 2918 ++loop_depth;
2294#endif 2919#endif
2295 2920
2296 assert (("libev: ev_loop recursion during release detected", loop_done != EVUNLOOP_RECURSE)); 2921 assert (("libev: ev_loop recursion during release detected", loop_done != EVBREAK_RECURSE));
2297 2922
2298 loop_done = EVUNLOOP_CANCEL; 2923 loop_done = EVBREAK_CANCEL;
2299 2924
2300 EV_INVOKE_PENDING; /* in case we recurse, ensure ordering stays nice and clean */ 2925 EV_INVOKE_PENDING; /* in case we recurse, ensure ordering stays nice and clean */
2301 2926
2302 do 2927 do
2303 { 2928 {
… …
2346 /* calculate blocking time */ 2971 /* calculate blocking time */
2347 { 2972 {
2348 ev_tstamp waittime = 0.; 2973 ev_tstamp waittime = 0.;
2349 ev_tstamp sleeptime = 0.; 2974 ev_tstamp sleeptime = 0.;
2350 2975
2976 /* remember old timestamp for io_blocktime calculation */
2977 ev_tstamp prev_mn_now = mn_now;
2978
2979 /* update time to cancel out callback processing overhead */
2980 time_update (EV_A_ 1e100);
2981
2982 /* from now on, we want a pipe-wake-up */
2983 pipe_write_wanted = 1;
2984
2985 ECB_MEMORY_FENCE; /* make sure pipe_write_wanted is visible before we check for potential skips */
2986
2351 if (expect_true (!(flags & EVLOOP_NONBLOCK || idleall || !activecnt))) 2987 if (expect_true (!(flags & EVRUN_NOWAIT || idleall || !activecnt || pipe_write_skipped)))
2352 { 2988 {
2353 /* remember old timestamp for io_blocktime calculation */
2354 ev_tstamp prev_mn_now = mn_now;
2355
2356 /* update time to cancel out callback processing overhead */
2357 time_update (EV_A_ 1e100);
2358
2359 waittime = MAX_BLOCKTIME; 2989 waittime = MAX_BLOCKTIME;
2360 2990
2361 if (timercnt) 2991 if (timercnt)
2362 { 2992 {
2363 ev_tstamp to = ANHE_at (timers [HEAP0]) - mn_now + backend_fudge; 2993 ev_tstamp to = ANHE_at (timers [HEAP0]) - mn_now;
2364 if (waittime > to) waittime = to; 2994 if (waittime > to) waittime = to;
2365 } 2995 }
2366 2996
2367#if EV_PERIODIC_ENABLE 2997#if EV_PERIODIC_ENABLE
2368 if (periodiccnt) 2998 if (periodiccnt)
2369 { 2999 {
2370 ev_tstamp to = ANHE_at (periodics [HEAP0]) - ev_rt_now + backend_fudge; 3000 ev_tstamp to = ANHE_at (periodics [HEAP0]) - ev_rt_now;
2371 if (waittime > to) waittime = to; 3001 if (waittime > to) waittime = to;
2372 } 3002 }
2373#endif 3003#endif
2374 3004
2375 /* don't let timeouts decrease the waittime below timeout_blocktime */ 3005 /* don't let timeouts decrease the waittime below timeout_blocktime */
2376 if (expect_false (waittime < timeout_blocktime)) 3006 if (expect_false (waittime < timeout_blocktime))
2377 waittime = timeout_blocktime; 3007 waittime = timeout_blocktime;
3008
3009 /* at this point, we NEED to wait, so we have to ensure */
3010 /* to pass a minimum nonzero value to the backend */
3011 if (expect_false (waittime < backend_mintime))
3012 waittime = backend_mintime;
2378 3013
2379 /* extra check because io_blocktime is commonly 0 */ 3014 /* extra check because io_blocktime is commonly 0 */
2380 if (expect_false (io_blocktime)) 3015 if (expect_false (io_blocktime))
2381 { 3016 {
2382 sleeptime = io_blocktime - (mn_now - prev_mn_now); 3017 sleeptime = io_blocktime - (mn_now - prev_mn_now);
2383 3018
2384 if (sleeptime > waittime - backend_fudge) 3019 if (sleeptime > waittime - backend_mintime)
2385 sleeptime = waittime - backend_fudge; 3020 sleeptime = waittime - backend_mintime;
2386 3021
2387 if (expect_true (sleeptime > 0.)) 3022 if (expect_true (sleeptime > 0.))
2388 { 3023 {
2389 ev_sleep (sleeptime); 3024 ev_sleep (sleeptime);
2390 waittime -= sleeptime; 3025 waittime -= sleeptime;
… …
2393 } 3028 }
2394 3029
2395#if EV_FEATURE_API 3030#if EV_FEATURE_API
2396 ++loop_count; 3031 ++loop_count;
2397#endif 3032#endif
2398 assert ((loop_done = EVUNLOOP_RECURSE, 1)); /* assert for side effect */ 3033 assert ((loop_done = EVBREAK_RECURSE, 1)); /* assert for side effect */
2399 backend_poll (EV_A_ waittime); 3034 backend_poll (EV_A_ waittime);
2400 assert ((loop_done = EVUNLOOP_CANCEL, 1)); /* assert for side effect */ 3035 assert ((loop_done = EVBREAK_CANCEL, 1)); /* assert for side effect */
3036
3037 pipe_write_wanted = 0; /* just an optimisation, no fence needed */
3038
3039 if (pipe_write_skipped)
3040 {
3041 assert (("libev: pipe_w not active, but pipe not written", ev_is_active (&pipe_w)));
3042 ev_feed_event (EV_A_ &pipe_w, EV_CUSTOM);
3043 }
3044
2401 3045
2402 /* update ev_rt_now, do magic */ 3046 /* update ev_rt_now, do magic */
2403 time_update (EV_A_ waittime + sleeptime); 3047 time_update (EV_A_ waittime + sleeptime);
2404 } 3048 }
2405 3049
… …
2423 EV_INVOKE_PENDING; 3067 EV_INVOKE_PENDING;
2424 } 3068 }
2425 while (expect_true ( 3069 while (expect_true (
2426 activecnt 3070 activecnt
2427 && !loop_done 3071 && !loop_done
2428 && !(flags & (EVLOOP_ONESHOT | EVLOOP_NONBLOCK)) 3072 && !(flags & (EVRUN_ONCE | EVRUN_NOWAIT))
2429 )); 3073 ));
2430 3074
2431 if (loop_done == EVUNLOOP_ONE) 3075 if (loop_done == EVBREAK_ONE)
2432 loop_done = EVUNLOOP_CANCEL; 3076 loop_done = EVBREAK_CANCEL;
2433 3077
2434#if EV_FEATURE_API 3078#if EV_FEATURE_API
2435 --loop_depth; 3079 --loop_depth;
2436#endif 3080#endif
2437} 3081}
2438 3082
2439void 3083void
2440ev_unloop (EV_P_ int how) 3084ev_break (EV_P_ int how)
2441{ 3085{
2442 loop_done = how; 3086 loop_done = how;
2443} 3087}
2444 3088
2445void 3089void
… …
2593 EV_FREQUENT_CHECK; 3237 EV_FREQUENT_CHECK;
2594 3238
2595 wlist_del (&anfds[w->fd].head, (WL)w); 3239 wlist_del (&anfds[w->fd].head, (WL)w);
2596 ev_stop (EV_A_ (W)w); 3240 ev_stop (EV_A_ (W)w);
2597 3241
2598 fd_change (EV_A_ w->fd, 1); 3242 fd_change (EV_A_ w->fd, EV_ANFD_REIFY);
2599 3243
2600 EV_FREQUENT_CHECK; 3244 EV_FREQUENT_CHECK;
2601} 3245}
2602 3246
2603void noinline 3247void noinline
… …
2656 3300
2657void noinline 3301void noinline
2658ev_timer_again (EV_P_ ev_timer *w) 3302ev_timer_again (EV_P_ ev_timer *w)
2659{ 3303{
2660 EV_FREQUENT_CHECK; 3304 EV_FREQUENT_CHECK;
3305
3306 clear_pending (EV_A_ (W)w);
2661 3307
2662 if (ev_is_active (w)) 3308 if (ev_is_active (w))
2663 { 3309 {
2664 if (w->repeat) 3310 if (w->repeat)
2665 { 3311 {
… …
2695 if (w->reschedule_cb) 3341 if (w->reschedule_cb)
2696 ev_at (w) = w->reschedule_cb (w, ev_rt_now); 3342 ev_at (w) = w->reschedule_cb (w, ev_rt_now);
2697 else if (w->interval) 3343 else if (w->interval)
2698 { 3344 {
2699 assert (("libev: ev_periodic_start called with negative interval value", w->interval >= 0.)); 3345 assert (("libev: ev_periodic_start called with negative interval value", w->interval >= 0.));
2700 /* this formula differs from the one in periodic_reify because we do not always round up */ 3346 periodic_recalc (EV_A_ w);
2701 ev_at (w) = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval;
2702 } 3347 }
2703 else 3348 else
2704 ev_at (w) = w->offset; 3349 ev_at (w) = w->offset;
2705 3350
2706 EV_FREQUENT_CHECK; 3351 EV_FREQUENT_CHECK;
… …
2827 sa.sa_handler = ev_sighandler; 3472 sa.sa_handler = ev_sighandler;
2828 sigfillset (&sa.sa_mask); 3473 sigfillset (&sa.sa_mask);
2829 sa.sa_flags = SA_RESTART; /* if restarting works we save one iteration */ 3474 sa.sa_flags = SA_RESTART; /* if restarting works we save one iteration */
2830 sigaction (w->signum, &sa, 0); 3475 sigaction (w->signum, &sa, 0);
2831 3476
3477 if (origflags & EVFLAG_NOSIGMASK)
3478 {
2832 sigemptyset (&sa.sa_mask); 3479 sigemptyset (&sa.sa_mask);
2833 sigaddset (&sa.sa_mask, w->signum); 3480 sigaddset (&sa.sa_mask, w->signum);
2834 sigprocmask (SIG_UNBLOCK, &sa.sa_mask, 0); 3481 sigprocmask (SIG_UNBLOCK, &sa.sa_mask, 0);
3482 }
2835#endif 3483#endif
2836 } 3484 }
2837 3485
2838 EV_FREQUENT_CHECK; 3486 EV_FREQUENT_CHECK;
2839} 3487}
… …
2980 if (!pend || pend == path) 3628 if (!pend || pend == path)
2981 break; 3629 break;
2982 3630
2983 *pend = 0; 3631 *pend = 0;
2984 w->wd = inotify_add_watch (fs_fd, path, mask); 3632 w->wd = inotify_add_watch (fs_fd, path, mask);
2985 } 3633 }
2986 while (w->wd < 0 && (errno == ENOENT || errno == EACCES)); 3634 while (w->wd < 0 && (errno == ENOENT || errno == EACCES));
2987 } 3635 }
2988 } 3636 }
2989 3637
2990 if (w->wd >= 0) 3638 if (w->wd >= 0)
… …
3057 infy_wd (EV_A_ ev->wd, ev->wd, ev); 3705 infy_wd (EV_A_ ev->wd, ev->wd, ev);
3058 ofs += sizeof (struct inotify_event) + ev->len; 3706 ofs += sizeof (struct inotify_event) + ev->len;
3059 } 3707 }
3060} 3708}
3061 3709
3062inline_size unsigned int
3063ev_linux_version (void)
3064{
3065 struct utsname buf;
3066 unsigned int v;
3067 int i;
3068 char *p = buf.release;
3069
3070 if (uname (&buf))
3071 return 0;
3072
3073 for (i = 3+1; --i; )
3074 {
3075 unsigned int c = 0;
3076
3077 for (;;)
3078 {
3079 if (*p >= '0' && *p <= '9')
3080 c = c * 10 + *p++ - '0';
3081 else
3082 {
3083 p += *p == '.';
3084 break;
3085 }
3086 }
3087
3088 v = (v << 8) | c;
3089 }
3090
3091 return v;
3092}
3093
3094inline_size void 3710inline_size void ecb_cold
3095ev_check_2625 (EV_P) 3711ev_check_2625 (EV_P)
3096{ 3712{
3097 /* kernels < 2.6.25 are borked 3713 /* kernels < 2.6.25 are borked
3098 * http://www.ussg.indiana.edu/hypermail/linux/kernel/0711.3/1208.html 3714 * http://www.ussg.indiana.edu/hypermail/linux/kernel/0711.3/1208.html
3099 */ 3715 */
… …
3420 4036
3421#if EV_EMBED_ENABLE 4037#if EV_EMBED_ENABLE
3422void noinline 4038void noinline
3423ev_embed_sweep (EV_P_ ev_embed *w) 4039ev_embed_sweep (EV_P_ ev_embed *w)
3424{ 4040{
3425 ev_loop (w->other, EVLOOP_NONBLOCK); 4041 ev_run (w->other, EVRUN_NOWAIT);
3426} 4042}
3427 4043
3428static void 4044static void
3429embed_io_cb (EV_P_ ev_io *io, int revents) 4045embed_io_cb (EV_P_ ev_io *io, int revents)
3430{ 4046{
3431 ev_embed *w = (ev_embed *)(((char *)io) - offsetof (ev_embed, io)); 4047 ev_embed *w = (ev_embed *)(((char *)io) - offsetof (ev_embed, io));
3432 4048
3433 if (ev_cb (w)) 4049 if (ev_cb (w))
3434 ev_feed_event (EV_A_ (W)w, EV_EMBED); 4050 ev_feed_event (EV_A_ (W)w, EV_EMBED);
3435 else 4051 else
3436 ev_loop (w->other, EVLOOP_NONBLOCK); 4052 ev_run (w->other, EVRUN_NOWAIT);
3437} 4053}
3438 4054
3439static void 4055static void
3440embed_prepare_cb (EV_P_ ev_prepare *prepare, int revents) 4056embed_prepare_cb (EV_P_ ev_prepare *prepare, int revents)
3441{ 4057{
… …
3445 EV_P = w->other; 4061 EV_P = w->other;
3446 4062
3447 while (fdchangecnt) 4063 while (fdchangecnt)
3448 { 4064 {
3449 fd_reify (EV_A); 4065 fd_reify (EV_A);
3450 ev_loop (EV_A_ EVLOOP_NONBLOCK); 4066 ev_run (EV_A_ EVRUN_NOWAIT);
3451 } 4067 }
3452 } 4068 }
3453} 4069}
3454 4070
3455static void 4071static void
… …
3461 4077
3462 { 4078 {
3463 EV_P = w->other; 4079 EV_P = w->other;
3464 4080
3465 ev_loop_fork (EV_A); 4081 ev_loop_fork (EV_A);
3466 ev_loop (EV_A_ EVLOOP_NONBLOCK); 4082 ev_run (EV_A_ EVRUN_NOWAIT);
3467 } 4083 }
3468 4084
3469 ev_embed_start (EV_A_ w); 4085 ev_embed_start (EV_A_ w);
3470} 4086}
3471 4087
… …
3563 4179
3564 EV_FREQUENT_CHECK; 4180 EV_FREQUENT_CHECK;
3565} 4181}
3566#endif 4182#endif
3567 4183
4184#if EV_CLEANUP_ENABLE
4185void
4186ev_cleanup_start (EV_P_ ev_cleanup *w)
4187{
4188 if (expect_false (ev_is_active (w)))
4189 return;
4190
4191 EV_FREQUENT_CHECK;
4192
4193 ev_start (EV_A_ (W)w, ++cleanupcnt);
4194 array_needsize (ev_cleanup *, cleanups, cleanupmax, cleanupcnt, EMPTY2);
4195 cleanups [cleanupcnt - 1] = w;
4196
4197 /* cleanup watchers should never keep a refcount on the loop */
4198 ev_unref (EV_A);
4199 EV_FREQUENT_CHECK;
4200}
4201
4202void
4203ev_cleanup_stop (EV_P_ ev_cleanup *w)
4204{
4205 clear_pending (EV_A_ (W)w);
4206 if (expect_false (!ev_is_active (w)))
4207 return;
4208
4209 EV_FREQUENT_CHECK;
4210 ev_ref (EV_A);
4211
4212 {
4213 int active = ev_active (w);
4214
4215 cleanups [active - 1] = cleanups [--cleanupcnt];
4216 ev_active (cleanups [active - 1]) = active;
4217 }
4218
4219 ev_stop (EV_A_ (W)w);
4220
4221 EV_FREQUENT_CHECK;
4222}
4223#endif
4224
3568#if EV_ASYNC_ENABLE 4225#if EV_ASYNC_ENABLE
3569void 4226void
3570ev_async_start (EV_P_ ev_async *w) 4227ev_async_start (EV_P_ ev_async *w)
3571{ 4228{
3572 if (expect_false (ev_is_active (w))) 4229 if (expect_false (ev_is_active (w)))
3573 return; 4230 return;
4231
4232 w->sent = 0;
3574 4233
3575 evpipe_init (EV_A); 4234 evpipe_init (EV_A);
3576 4235
3577 EV_FREQUENT_CHECK; 4236 EV_FREQUENT_CHECK;
3578 4237
… …
3681} 4340}
3682 4341
3683/*****************************************************************************/ 4342/*****************************************************************************/
3684 4343
3685#if EV_WALK_ENABLE 4344#if EV_WALK_ENABLE
3686void 4345void ecb_cold
3687ev_walk (EV_P_ int types, void (*cb)(EV_P_ int type, void *w)) 4346ev_walk (EV_P_ int types, void (*cb)(EV_P_ int type, void *w))
3688{ 4347{
3689 int i, j; 4348 int i, j;
3690 ev_watcher_list *wl, *wn; 4349 ev_watcher_list *wl, *wn;
3691 4350
… …
3735 cb (EV_A_ EV_PERIODIC, ANHE_w (periodics [i])); 4394 cb (EV_A_ EV_PERIODIC, ANHE_w (periodics [i]));
3736#endif 4395#endif
3737 4396
3738#if EV_IDLE_ENABLE 4397#if EV_IDLE_ENABLE
3739 if (types & EV_IDLE) 4398 if (types & EV_IDLE)
3740 for (j = NUMPRI; i--; ) 4399 for (j = NUMPRI; j--; )
3741 for (i = idlecnt [j]; i--; ) 4400 for (i = idlecnt [j]; i--; )
3742 cb (EV_A_ EV_IDLE, idles [j][i]); 4401 cb (EV_A_ EV_IDLE, idles [j][i]);
3743#endif 4402#endif
3744 4403
3745#if EV_FORK_ENABLE 4404#if EV_FORK_ENABLE
… …
3798 4457
3799#if EV_MULTIPLICITY 4458#if EV_MULTIPLICITY
3800 #include "ev_wrap.h" 4459 #include "ev_wrap.h"
3801#endif 4460#endif
3802 4461
3803#ifdef __cplusplus
3804}
3805#endif
3806

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