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Comparing libev/ev.c (file contents):
Revision 1.343 by root, Fri Apr 2 21:03:46 2010 UTC vs.
Revision 1.404 by root, Wed Jan 18 12:44:32 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
… …
195# ifndef EV_SELECT_IS_WINSOCKET 196# ifndef EV_SELECT_IS_WINSOCKET
196# define EV_SELECT_IS_WINSOCKET 1 197# define EV_SELECT_IS_WINSOCKET 1
197# endif 198# endif
198# undef EV_AVOID_STDIO 199# undef EV_AVOID_STDIO
199#endif 200#endif
201
202/* OS X, in its infinite idiocy, actually HARDCODES
203 * a limit of 1024 into their select. Where people have brains,
204 * OS X engineers apparently have a vacuum. Or maybe they were
205 * ordered to have a vacuum, or they do anything for money.
206 * This might help. Or not.
207 */
208#define _DARWIN_UNLIMITED_SELECT 1
200 209
201/* this block tries to deduce configuration from header-defined symbols and defaults */ 210/* this block tries to deduce configuration from header-defined symbols and defaults */
202 211
203/* try to deduce the maximum number of signals on this platform */ 212/* try to deduce the maximum number of signals on this platform */
204#if defined (EV_NSIG) 213#if defined (EV_NSIG)
… …
226/* to make it compile regardless, just remove the above line, */ 235/* to make it compile regardless, just remove the above line, */
227/* but consider reporting it, too! :) */ 236/* but consider reporting it, too! :) */
228# define EV_NSIG 65 237# define EV_NSIG 65
229#endif 238#endif
230 239
240#ifndef EV_USE_FLOOR
241# define EV_USE_FLOOR 0
242#endif
243
231#ifndef EV_USE_CLOCK_SYSCALL 244#ifndef EV_USE_CLOCK_SYSCALL
232# if __linux && __GLIBC__ >= 2 245# if __linux && __GLIBC__ >= 2
233# define EV_USE_CLOCK_SYSCALL EV_FEATURE_OS 246# define EV_USE_CLOCK_SYSCALL EV_FEATURE_OS
234# else 247# else
235# define EV_USE_CLOCK_SYSCALL 0 248# define EV_USE_CLOCK_SYSCALL 0
… …
370# undef EV_USE_INOTIFY 383# undef EV_USE_INOTIFY
371# define EV_USE_INOTIFY 0 384# define EV_USE_INOTIFY 0
372#endif 385#endif
373 386
374#if !EV_USE_NANOSLEEP 387#if !EV_USE_NANOSLEEP
375# ifndef _WIN32 388/* hp-ux has it in sys/time.h, which we unconditionally include above */
389# if !defined(_WIN32) && !defined(__hpux)
376# include <sys/select.h> 390# include <sys/select.h>
377# endif 391# endif
378#endif 392#endif
379 393
380#if EV_USE_INOTIFY 394#if EV_USE_INOTIFY
381# include <sys/utsname.h>
382# include <sys/statfs.h> 395# include <sys/statfs.h>
383# include <sys/inotify.h> 396# include <sys/inotify.h>
384/* 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 */
385# ifndef IN_DONT_FOLLOW 398# ifndef IN_DONT_FOLLOW
386# undef EV_USE_INOTIFY 399# undef EV_USE_INOTIFY
… …
403# define EFD_CLOEXEC O_CLOEXEC 416# define EFD_CLOEXEC O_CLOEXEC
404# else 417# else
405# define EFD_CLOEXEC 02000000 418# define EFD_CLOEXEC 02000000
406# endif 419# endif
407# endif 420# endif
408# ifdef __cplusplus
409extern "C" {
410# endif
411int (eventfd) (unsigned int initval, int flags); 421EV_CPP(extern "C") int (eventfd) (unsigned int initval, int flags);
412# ifdef __cplusplus
413}
414# endif
415#endif 422#endif
416 423
417#if EV_USE_SIGNALFD 424#if EV_USE_SIGNALFD
418/* 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 */
419# include <stdint.h> 426# include <stdint.h>
… …
425# define SFD_CLOEXEC O_CLOEXEC 432# define SFD_CLOEXEC O_CLOEXEC
426# else 433# else
427# define SFD_CLOEXEC 02000000 434# define SFD_CLOEXEC 02000000
428# endif 435# endif
429# endif 436# endif
430# ifdef __cplusplus
431extern "C" {
432# endif
433int signalfd (int fd, const sigset_t *mask, int flags); 437EV_CPP (extern "C") int signalfd (int fd, const sigset_t *mask, int flags);
434 438
435struct signalfd_siginfo 439struct signalfd_siginfo
436{ 440{
437 uint32_t ssi_signo; 441 uint32_t ssi_signo;
438 char pad[128 - sizeof (uint32_t)]; 442 char pad[128 - sizeof (uint32_t)];
439}; 443};
440# ifdef __cplusplus
441}
442# endif 444#endif
443#endif
444
445 445
446/**/ 446/**/
447 447
448#if EV_VERIFY >= 3 448#if EV_VERIFY >= 3
449# define EV_FREQUENT_CHECK ev_verify (EV_A) 449# define EV_FREQUENT_CHECK ev_verify (EV_A)
450#else 450#else
451# define EV_FREQUENT_CHECK do { } while (0) 451# define EV_FREQUENT_CHECK do { } while (0)
452#endif 452#endif
453 453
454/* 454/*
455 * This is used to avoid floating point rounding problems. 455 * This is used to work around floating point rounding problems.
456 * It is added to ev_rt_now when scheduling periodics
457 * to ensure progress, time-wise, even when rounding
458 * errors are against us.
459 * This value is good at least till the year 4000. 456 * This value is good at least till the year 4000.
460 * Better solutions welcome.
461 */ 457 */
462#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 */
463 460
464#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) */
465#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) */
466 463
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;
467#if __GNUC__ >= 4 508 #if __GNUC__
468# define expect(expr,value) __builtin_expect ((expr),(value)) 509 typedef signed long long int64_t;
469# 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
470#else 515#else
471# define expect(expr,value) (expr) 516 #include <inttypes.h>
472# define noinline
473# if __STDC_VERSION__ < 199901L && __GNUC__ < 2
474# define inline
475# 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)))
476#endif 531 #endif
532#endif
477 533
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) || defined(__clang__) || __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 | #StoreLoad | #LoadLoad | #StoreStore" : : : "memory")
563 #define ECB_MEMORY_FENCE_ACQUIRE __asm__ __volatile__ ("membar #LoadLoad" : : : "memory")
564 #define ECB_MEMORY_FENCE_RELEASE __asm__ __volatile__ ("membar #StoreStore")
565 #endif
566 #endif
567#endif
568
569#ifndef ECB_MEMORY_FENCE
570 #if ECB_GCC_VERSION(4,4) || defined(__INTEL_COMPILER) || defined(__clang__)
571 #define ECB_MEMORY_FENCE __sync_synchronize ()
572 /*#define ECB_MEMORY_FENCE_ACQUIRE ({ char dummy = 0; __sync_lock_test_and_set (&dummy, 1); }) */
573 /*#define ECB_MEMORY_FENCE_RELEASE ({ char dummy = 1; __sync_lock_release (&dummy ); }) */
574 #elif _MSC_VER >= 1400 /* VC++ 2005 */
575 #pragma intrinsic(_ReadBarrier,_WriteBarrier,_ReadWriteBarrier)
576 #define ECB_MEMORY_FENCE _ReadWriteBarrier ()
577 #define ECB_MEMORY_FENCE_ACQUIRE _ReadWriteBarrier () /* according to msdn, _ReadBarrier is not a load fence */
578 #define ECB_MEMORY_FENCE_RELEASE _WriteBarrier ()
579 #elif defined(_WIN32)
580 #include <WinNT.h>
581 #define ECB_MEMORY_FENCE MemoryBarrier () /* actually just xchg on x86... scary */
582 #elif __SUNPRO_C >= 0x5110 || __SUNPRO_CC >= 0x5110
583 #include <mbarrier.h>
584 #define ECB_MEMORY_FENCE __machine_rw_barrier ()
585 #define ECB_MEMORY_FENCE_ACQUIRE __machine_r_barrier ()
586 #define ECB_MEMORY_FENCE_RELEASE __machine_w_barrier ()
587 #endif
588#endif
589
590#ifndef ECB_MEMORY_FENCE
591 #if !ECB_AVOID_PTHREADS
592 /*
593 * if you get undefined symbol references to pthread_mutex_lock,
594 * or failure to find pthread.h, then you should implement
595 * the ECB_MEMORY_FENCE operations for your cpu/compiler
596 * OR provide pthread.h and link against the posix thread library
597 * of your system.
598 */
599 #include <pthread.h>
600 #define ECB_NEEDS_PTHREADS 1
601 #define ECB_MEMORY_FENCE_NEEDS_PTHREADS 1
602
603 static pthread_mutex_t ecb_mf_lock = PTHREAD_MUTEX_INITIALIZER;
604 #define ECB_MEMORY_FENCE do { pthread_mutex_lock (&ecb_mf_lock); pthread_mutex_unlock (&ecb_mf_lock); } while (0)
605 #endif
606#endif
607
608#if !defined(ECB_MEMORY_FENCE_ACQUIRE) && defined(ECB_MEMORY_FENCE)
609 #define ECB_MEMORY_FENCE_ACQUIRE ECB_MEMORY_FENCE
610#endif
611
612#if !defined(ECB_MEMORY_FENCE_RELEASE) && defined(ECB_MEMORY_FENCE)
613 #define ECB_MEMORY_FENCE_RELEASE ECB_MEMORY_FENCE
614#endif
615
616/*****************************************************************************/
617
618#define ECB_C99 (__STDC_VERSION__ >= 199901L)
619
620#if __cplusplus
621 #define ecb_inline static inline
622#elif ECB_GCC_VERSION(2,5)
623 #define ecb_inline static __inline__
624#elif ECB_C99
625 #define ecb_inline static inline
626#else
627 #define ecb_inline static
628#endif
629
630#if ECB_GCC_VERSION(3,3)
631 #define ecb_restrict __restrict__
632#elif ECB_C99
633 #define ecb_restrict restrict
634#else
635 #define ecb_restrict
636#endif
637
638typedef int ecb_bool;
639
640#define ECB_CONCAT_(a, b) a ## b
641#define ECB_CONCAT(a, b) ECB_CONCAT_(a, b)
642#define ECB_STRINGIFY_(a) # a
643#define ECB_STRINGIFY(a) ECB_STRINGIFY_(a)
644
645#define ecb_function_ ecb_inline
646
647#if ECB_GCC_VERSION(3,1)
648 #define ecb_attribute(attrlist) __attribute__(attrlist)
649 #define ecb_is_constant(expr) __builtin_constant_p (expr)
650 #define ecb_expect(expr,value) __builtin_expect ((expr),(value))
651 #define ecb_prefetch(addr,rw,locality) __builtin_prefetch (addr, rw, locality)
652#else
653 #define ecb_attribute(attrlist)
654 #define ecb_is_constant(expr) 0
655 #define ecb_expect(expr,value) (expr)
656 #define ecb_prefetch(addr,rw,locality)
657#endif
658
659/* no emulation for ecb_decltype */
660#if ECB_GCC_VERSION(4,5)
661 #define ecb_decltype(x) __decltype(x)
662#elif ECB_GCC_VERSION(3,0)
663 #define ecb_decltype(x) __typeof(x)
664#endif
665
666#define ecb_noinline ecb_attribute ((__noinline__))
667#define ecb_noreturn ecb_attribute ((__noreturn__))
668#define ecb_unused ecb_attribute ((__unused__))
669#define ecb_const ecb_attribute ((__const__))
670#define ecb_pure ecb_attribute ((__pure__))
671
672#if ECB_GCC_VERSION(4,3)
673 #define ecb_artificial ecb_attribute ((__artificial__))
674 #define ecb_hot ecb_attribute ((__hot__))
675 #define ecb_cold ecb_attribute ((__cold__))
676#else
677 #define ecb_artificial
678 #define ecb_hot
679 #define ecb_cold
680#endif
681
682/* put around conditional expressions if you are very sure that the */
683/* expression is mostly true or mostly false. note that these return */
684/* booleans, not the expression. */
478#define expect_false(expr) expect ((expr) != 0, 0) 685#define ecb_expect_false(expr) ecb_expect (!!(expr), 0)
479#define expect_true(expr) expect ((expr) != 0, 1) 686#define ecb_expect_true(expr) ecb_expect (!!(expr), 1)
687/* for compatibility to the rest of the world */
688#define ecb_likely(expr) ecb_expect_true (expr)
689#define ecb_unlikely(expr) ecb_expect_false (expr)
690
691/* count trailing zero bits and count # of one bits */
692#if ECB_GCC_VERSION(3,4)
693 /* we assume int == 32 bit, long == 32 or 64 bit and long long == 64 bit */
694 #define ecb_ld32(x) (__builtin_clz (x) ^ 31)
695 #define ecb_ld64(x) (__builtin_clzll (x) ^ 63)
696 #define ecb_ctz32(x) __builtin_ctz (x)
697 #define ecb_ctz64(x) __builtin_ctzll (x)
698 #define ecb_popcount32(x) __builtin_popcount (x)
699 /* no popcountll */
700#else
701 ecb_function_ int ecb_ctz32 (uint32_t x) ecb_const;
702 ecb_function_ int
703 ecb_ctz32 (uint32_t x)
704 {
705 int r = 0;
706
707 x &= ~x + 1; /* this isolates the lowest bit */
708
709#if ECB_branchless_on_i386
710 r += !!(x & 0xaaaaaaaa) << 0;
711 r += !!(x & 0xcccccccc) << 1;
712 r += !!(x & 0xf0f0f0f0) << 2;
713 r += !!(x & 0xff00ff00) << 3;
714 r += !!(x & 0xffff0000) << 4;
715#else
716 if (x & 0xaaaaaaaa) r += 1;
717 if (x & 0xcccccccc) r += 2;
718 if (x & 0xf0f0f0f0) r += 4;
719 if (x & 0xff00ff00) r += 8;
720 if (x & 0xffff0000) r += 16;
721#endif
722
723 return r;
724 }
725
726 ecb_function_ int ecb_ctz64 (uint64_t x) ecb_const;
727 ecb_function_ int
728 ecb_ctz64 (uint64_t x)
729 {
730 int shift = x & 0xffffffffU ? 0 : 32;
731 return ecb_ctz32 (x >> shift) + shift;
732 }
733
734 ecb_function_ int ecb_popcount32 (uint32_t x) ecb_const;
735 ecb_function_ int
736 ecb_popcount32 (uint32_t x)
737 {
738 x -= (x >> 1) & 0x55555555;
739 x = ((x >> 2) & 0x33333333) + (x & 0x33333333);
740 x = ((x >> 4) + x) & 0x0f0f0f0f;
741 x *= 0x01010101;
742
743 return x >> 24;
744 }
745
746 ecb_function_ int ecb_ld32 (uint32_t x) ecb_const;
747 ecb_function_ int ecb_ld32 (uint32_t x)
748 {
749 int r = 0;
750
751 if (x >> 16) { x >>= 16; r += 16; }
752 if (x >> 8) { x >>= 8; r += 8; }
753 if (x >> 4) { x >>= 4; r += 4; }
754 if (x >> 2) { x >>= 2; r += 2; }
755 if (x >> 1) { r += 1; }
756
757 return r;
758 }
759
760 ecb_function_ int ecb_ld64 (uint64_t x) ecb_const;
761 ecb_function_ int ecb_ld64 (uint64_t x)
762 {
763 int r = 0;
764
765 if (x >> 32) { x >>= 32; r += 32; }
766
767 return r + ecb_ld32 (x);
768 }
769#endif
770
771ecb_function_ uint8_t ecb_bitrev8 (uint8_t x) ecb_const;
772ecb_function_ uint8_t ecb_bitrev8 (uint8_t x)
773{
774 return ( (x * 0x0802U & 0x22110U)
775 | (x * 0x8020U & 0x88440U)) * 0x10101U >> 16;
776}
777
778ecb_function_ uint16_t ecb_bitrev16 (uint16_t x) ecb_const;
779ecb_function_ uint16_t ecb_bitrev16 (uint16_t x)
780{
781 x = ((x >> 1) & 0x5555) | ((x & 0x5555) << 1);
782 x = ((x >> 2) & 0x3333) | ((x & 0x3333) << 2);
783 x = ((x >> 4) & 0x0f0f) | ((x & 0x0f0f) << 4);
784 x = ( x >> 8 ) | ( x << 8);
785
786 return x;
787}
788
789ecb_function_ uint32_t ecb_bitrev32 (uint32_t x) ecb_const;
790ecb_function_ uint32_t ecb_bitrev32 (uint32_t x)
791{
792 x = ((x >> 1) & 0x55555555) | ((x & 0x55555555) << 1);
793 x = ((x >> 2) & 0x33333333) | ((x & 0x33333333) << 2);
794 x = ((x >> 4) & 0x0f0f0f0f) | ((x & 0x0f0f0f0f) << 4);
795 x = ((x >> 8) & 0x00ff00ff) | ((x & 0x00ff00ff) << 8);
796 x = ( x >> 16 ) | ( x << 16);
797
798 return x;
799}
800
801/* popcount64 is only available on 64 bit cpus as gcc builtin */
802/* so for this version we are lazy */
803ecb_function_ int ecb_popcount64 (uint64_t x) ecb_const;
804ecb_function_ int
805ecb_popcount64 (uint64_t x)
806{
807 return ecb_popcount32 (x) + ecb_popcount32 (x >> 32);
808}
809
810ecb_inline uint8_t ecb_rotl8 (uint8_t x, unsigned int count) ecb_const;
811ecb_inline uint8_t ecb_rotr8 (uint8_t x, unsigned int count) ecb_const;
812ecb_inline uint16_t ecb_rotl16 (uint16_t x, unsigned int count) ecb_const;
813ecb_inline uint16_t ecb_rotr16 (uint16_t x, unsigned int count) ecb_const;
814ecb_inline uint32_t ecb_rotl32 (uint32_t x, unsigned int count) ecb_const;
815ecb_inline uint32_t ecb_rotr32 (uint32_t x, unsigned int count) ecb_const;
816ecb_inline uint64_t ecb_rotl64 (uint64_t x, unsigned int count) ecb_const;
817ecb_inline uint64_t ecb_rotr64 (uint64_t x, unsigned int count) ecb_const;
818
819ecb_inline uint8_t ecb_rotl8 (uint8_t x, unsigned int count) { return (x >> ( 8 - count)) | (x << count); }
820ecb_inline uint8_t ecb_rotr8 (uint8_t x, unsigned int count) { return (x << ( 8 - count)) | (x >> count); }
821ecb_inline uint16_t ecb_rotl16 (uint16_t x, unsigned int count) { return (x >> (16 - count)) | (x << count); }
822ecb_inline uint16_t ecb_rotr16 (uint16_t x, unsigned int count) { return (x << (16 - count)) | (x >> count); }
823ecb_inline uint32_t ecb_rotl32 (uint32_t x, unsigned int count) { return (x >> (32 - count)) | (x << count); }
824ecb_inline uint32_t ecb_rotr32 (uint32_t x, unsigned int count) { return (x << (32 - count)) | (x >> count); }
825ecb_inline uint64_t ecb_rotl64 (uint64_t x, unsigned int count) { return (x >> (64 - count)) | (x << count); }
826ecb_inline uint64_t ecb_rotr64 (uint64_t x, unsigned int count) { return (x << (64 - count)) | (x >> count); }
827
828#if ECB_GCC_VERSION(4,3)
829 #define ecb_bswap16(x) (__builtin_bswap32 (x) >> 16)
830 #define ecb_bswap32(x) __builtin_bswap32 (x)
831 #define ecb_bswap64(x) __builtin_bswap64 (x)
832#else
833 ecb_function_ uint16_t ecb_bswap16 (uint16_t x) ecb_const;
834 ecb_function_ uint16_t
835 ecb_bswap16 (uint16_t x)
836 {
837 return ecb_rotl16 (x, 8);
838 }
839
840 ecb_function_ uint32_t ecb_bswap32 (uint32_t x) ecb_const;
841 ecb_function_ uint32_t
842 ecb_bswap32 (uint32_t x)
843 {
844 return (((uint32_t)ecb_bswap16 (x)) << 16) | ecb_bswap16 (x >> 16);
845 }
846
847 ecb_function_ uint64_t ecb_bswap64 (uint64_t x) ecb_const;
848 ecb_function_ uint64_t
849 ecb_bswap64 (uint64_t x)
850 {
851 return (((uint64_t)ecb_bswap32 (x)) << 32) | ecb_bswap32 (x >> 32);
852 }
853#endif
854
855#if ECB_GCC_VERSION(4,5)
856 #define ecb_unreachable() __builtin_unreachable ()
857#else
858 /* this seems to work fine, but gcc always emits a warning for it :/ */
859 ecb_function_ void ecb_unreachable (void) ecb_noreturn;
860 ecb_function_ void ecb_unreachable (void) { }
861#endif
862
863/* try to tell the compiler that some condition is definitely true */
864#define ecb_assume(cond) do { if (!(cond)) ecb_unreachable (); } while (0)
865
866ecb_function_ unsigned char ecb_byteorder_helper (void) ecb_const;
867ecb_function_ unsigned char
868ecb_byteorder_helper (void)
869{
870 const uint32_t u = 0x11223344;
871 return *(unsigned char *)&u;
872}
873
874ecb_function_ ecb_bool ecb_big_endian (void) ecb_const;
875ecb_function_ ecb_bool ecb_big_endian (void) { return ecb_byteorder_helper () == 0x11; }
876ecb_function_ ecb_bool ecb_little_endian (void) ecb_const;
877ecb_function_ ecb_bool ecb_little_endian (void) { return ecb_byteorder_helper () == 0x44; }
878
879#if ECB_GCC_VERSION(3,0) || ECB_C99
880 #define ecb_mod(m,n) ((m) % (n) + ((m) % (n) < 0 ? (n) : 0))
881#else
882 #define ecb_mod(m,n) ((m) < 0 ? ((n) - 1 - ((-1 - (m)) % (n))) : ((m) % (n)))
883#endif
884
885#if __cplusplus
886 template<typename T>
887 static inline T ecb_div_rd (T val, T div)
888 {
889 return val < 0 ? - ((-val + div - 1) / div) : (val ) / div;
890 }
891 template<typename T>
892 static inline T ecb_div_ru (T val, T div)
893 {
894 return val < 0 ? - ((-val ) / div) : (val + div - 1) / div;
895 }
896#else
897 #define ecb_div_rd(val,div) ((val) < 0 ? - ((-(val) + (div) - 1) / (div)) : ((val) ) / (div))
898 #define ecb_div_ru(val,div) ((val) < 0 ? - ((-(val) ) / (div)) : ((val) + (div) - 1) / (div))
899#endif
900
901#if ecb_cplusplus_does_not_suck
902 /* does not work for local types (http://www.open-std.org/jtc1/sc22/wg21/docs/papers/2008/n2657.htm) */
903 template<typename T, int N>
904 static inline int ecb_array_length (const T (&arr)[N])
905 {
906 return N;
907 }
908#else
909 #define ecb_array_length(name) (sizeof (name) / sizeof (name [0]))
910#endif
911
912#endif
913
914/* ECB.H END */
915
916#if ECB_MEMORY_FENCE_NEEDS_PTHREADS
917/* if your architecture doesn't need memory fences, e.g. because it is
918 * single-cpu/core, or if you use libev in a project that doesn't use libev
919 * from multiple threads, then you can define ECB_AVOID_PTHREADS when compiling
920 * libev, in which cases the memory fences become nops.
921 * alternatively, you can remove this #error and link against libpthread,
922 * which will then provide the memory fences.
923 */
924# error "memory fences not defined for your architecture, please report"
925#endif
926
927#ifndef ECB_MEMORY_FENCE
928# define ECB_MEMORY_FENCE do { } while (0)
929# define ECB_MEMORY_FENCE_ACQUIRE ECB_MEMORY_FENCE
930# define ECB_MEMORY_FENCE_RELEASE ECB_MEMORY_FENCE
931#endif
932
933#define expect_false(cond) ecb_expect_false (cond)
934#define expect_true(cond) ecb_expect_true (cond)
935#define noinline ecb_noinline
936
480#define inline_size static inline 937#define inline_size ecb_inline
481 938
482#if EV_FEATURE_CODE 939#if EV_FEATURE_CODE
483# define inline_speed static inline 940# define inline_speed ecb_inline
484#else 941#else
485# define inline_speed static noinline 942# define inline_speed static noinline
486#endif 943#endif
487 944
488#define NUMPRI (EV_MAXPRI - EV_MINPRI + 1) 945#define NUMPRI (EV_MAXPRI - EV_MINPRI + 1)
… …
503#define ev_active(w) ((W)(w))->active 960#define ev_active(w) ((W)(w))->active
504#define ev_at(w) ((WT)(w))->at 961#define ev_at(w) ((WT)(w))->at
505 962
506#if EV_USE_REALTIME 963#if EV_USE_REALTIME
507/* sig_atomic_t is used to avoid per-thread variables or locking but still */ 964/* sig_atomic_t is used to avoid per-thread variables or locking but still */
508/* giving it a reasonably high chance of working on typical architetcures */ 965/* giving it a reasonably high chance of working on typical architectures */
509static EV_ATOMIC_T have_realtime; /* did clock_gettime (CLOCK_REALTIME) work? */ 966static EV_ATOMIC_T have_realtime; /* did clock_gettime (CLOCK_REALTIME) work? */
510#endif 967#endif
511 968
512#if EV_USE_MONOTONIC 969#if EV_USE_MONOTONIC
513static EV_ATOMIC_T have_monotonic; /* did clock_gettime (CLOCK_MONOTONIC) work? */ 970static EV_ATOMIC_T have_monotonic; /* did clock_gettime (CLOCK_MONOTONIC) work? */
… …
527# include "ev_win32.c" 984# include "ev_win32.c"
528#endif 985#endif
529 986
530/*****************************************************************************/ 987/*****************************************************************************/
531 988
989/* define a suitable floor function (only used by periodics atm) */
990
991#if EV_USE_FLOOR
992# include <math.h>
993# define ev_floor(v) floor (v)
994#else
995
996#include <float.h>
997
998/* a floor() replacement function, should be independent of ev_tstamp type */
999static ev_tstamp noinline
1000ev_floor (ev_tstamp v)
1001{
1002 /* the choice of shift factor is not terribly important */
1003#if FLT_RADIX != 2 /* assume FLT_RADIX == 10 */
1004 const ev_tstamp shift = sizeof (unsigned long) >= 8 ? 10000000000000000000. : 1000000000.;
1005#else
1006 const ev_tstamp shift = sizeof (unsigned long) >= 8 ? 18446744073709551616. : 4294967296.;
1007#endif
1008
1009 /* argument too large for an unsigned long? */
1010 if (expect_false (v >= shift))
1011 {
1012 ev_tstamp f;
1013
1014 if (v == v - 1.)
1015 return v; /* very large number */
1016
1017 f = shift * ev_floor (v * (1. / shift));
1018 return f + ev_floor (v - f);
1019 }
1020
1021 /* special treatment for negative args? */
1022 if (expect_false (v < 0.))
1023 {
1024 ev_tstamp f = -ev_floor (-v);
1025
1026 return f - (f == v ? 0 : 1);
1027 }
1028
1029 /* fits into an unsigned long */
1030 return (unsigned long)v;
1031}
1032
1033#endif
1034
1035/*****************************************************************************/
1036
1037#ifdef __linux
1038# include <sys/utsname.h>
1039#endif
1040
1041static unsigned int noinline ecb_cold
1042ev_linux_version (void)
1043{
1044#ifdef __linux
1045 unsigned int v = 0;
1046 struct utsname buf;
1047 int i;
1048 char *p = buf.release;
1049
1050 if (uname (&buf))
1051 return 0;
1052
1053 for (i = 3+1; --i; )
1054 {
1055 unsigned int c = 0;
1056
1057 for (;;)
1058 {
1059 if (*p >= '0' && *p <= '9')
1060 c = c * 10 + *p++ - '0';
1061 else
1062 {
1063 p += *p == '.';
1064 break;
1065 }
1066 }
1067
1068 v = (v << 8) | c;
1069 }
1070
1071 return v;
1072#else
1073 return 0;
1074#endif
1075}
1076
1077/*****************************************************************************/
1078
532#if EV_AVOID_STDIO 1079#if EV_AVOID_STDIO
533static void noinline 1080static void noinline ecb_cold
534ev_printerr (const char *msg) 1081ev_printerr (const char *msg)
535{ 1082{
536 write (STDERR_FILENO, msg, strlen (msg)); 1083 write (STDERR_FILENO, msg, strlen (msg));
537} 1084}
538#endif 1085#endif
539 1086
540static void (*syserr_cb)(const char *msg); 1087static void (*syserr_cb)(const char *msg);
541 1088
542void 1089void ecb_cold
543ev_set_syserr_cb (void (*cb)(const char *msg)) 1090ev_set_syserr_cb (void (*cb)(const char *msg))
544{ 1091{
545 syserr_cb = cb; 1092 syserr_cb = cb;
546} 1093}
547 1094
548static void noinline 1095static void noinline ecb_cold
549ev_syserr (const char *msg) 1096ev_syserr (const char *msg)
550{ 1097{
551 if (!msg) 1098 if (!msg)
552 msg = "(libev) system error"; 1099 msg = "(libev) system error";
553 1100
554 if (syserr_cb) 1101 if (syserr_cb)
555 syserr_cb (msg); 1102 syserr_cb (msg);
556 else 1103 else
557 { 1104 {
558#if EV_AVOID_STDIO 1105#if EV_AVOID_STDIO
559 const char *err = strerror (errno);
560
561 ev_printerr (msg); 1106 ev_printerr (msg);
562 ev_printerr (": "); 1107 ev_printerr (": ");
563 ev_printerr (err); 1108 ev_printerr (strerror (errno));
564 ev_printerr ("\n"); 1109 ev_printerr ("\n");
565#else 1110#else
566 perror (msg); 1111 perror (msg);
567#endif 1112#endif
568 abort (); 1113 abort ();
… …
588#endif 1133#endif
589} 1134}
590 1135
591static void *(*alloc)(void *ptr, long size) = ev_realloc_emul; 1136static void *(*alloc)(void *ptr, long size) = ev_realloc_emul;
592 1137
593void 1138void ecb_cold
594ev_set_allocator (void *(*cb)(void *ptr, long size)) 1139ev_set_allocator (void *(*cb)(void *ptr, long size))
595{ 1140{
596 alloc = cb; 1141 alloc = cb;
597} 1142}
598 1143
… …
602 ptr = alloc (ptr, size); 1147 ptr = alloc (ptr, size);
603 1148
604 if (!ptr && size) 1149 if (!ptr && size)
605 { 1150 {
606#if EV_AVOID_STDIO 1151#if EV_AVOID_STDIO
607 ev_printerr ("libev: memory allocation failed, aborting.\n"); 1152 ev_printerr ("(libev) memory allocation failed, aborting.\n");
608#else 1153#else
609 fprintf (stderr, "libev: cannot allocate %ld bytes, aborting.", size); 1154 fprintf (stderr, "(libev) cannot allocate %ld bytes, aborting.", size);
610#endif 1155#endif
611 abort (); 1156 abort ();
612 } 1157 }
613 1158
614 return ptr; 1159 return ptr;
… …
631 unsigned char emask; /* the epoll backend stores the actual kernel mask in here */ 1176 unsigned char emask; /* the epoll backend stores the actual kernel mask in here */
632 unsigned char unused; 1177 unsigned char unused;
633#if EV_USE_EPOLL 1178#if EV_USE_EPOLL
634 unsigned int egen; /* generation counter to counter epoll bugs */ 1179 unsigned int egen; /* generation counter to counter epoll bugs */
635#endif 1180#endif
636#if EV_SELECT_IS_WINSOCKET 1181#if EV_SELECT_IS_WINSOCKET || EV_USE_IOCP
637 SOCKET handle; 1182 SOCKET handle;
1183#endif
1184#if EV_USE_IOCP
1185 OVERLAPPED or, ow;
638#endif 1186#endif
639} ANFD; 1187} ANFD;
640 1188
641/* stores the pending event set for a given watcher */ 1189/* stores the pending event set for a given watcher */
642typedef struct 1190typedef struct
… …
684 #undef VAR 1232 #undef VAR
685 }; 1233 };
686 #include "ev_wrap.h" 1234 #include "ev_wrap.h"
687 1235
688 static struct ev_loop default_loop_struct; 1236 static struct ev_loop default_loop_struct;
689 struct ev_loop *ev_default_loop_ptr; 1237 EV_API_DECL struct ev_loop *ev_default_loop_ptr = 0; /* needs to be initialised to make it a definition despite extern */
690 1238
691#else 1239#else
692 1240
693 ev_tstamp ev_rt_now; 1241 EV_API_DECL ev_tstamp ev_rt_now = 0; /* needs to be initialised to make it a definition despite extern */
694 #define VAR(name,decl) static decl; 1242 #define VAR(name,decl) static decl;
695 #include "ev_vars.h" 1243 #include "ev_vars.h"
696 #undef VAR 1244 #undef VAR
697 1245
698 static int ev_default_loop_ptr; 1246 static int ev_default_loop_ptr;
… …
707# define EV_RELEASE_CB (void)0 1255# define EV_RELEASE_CB (void)0
708# define EV_ACQUIRE_CB (void)0 1256# define EV_ACQUIRE_CB (void)0
709# define EV_INVOKE_PENDING ev_invoke_pending (EV_A) 1257# define EV_INVOKE_PENDING ev_invoke_pending (EV_A)
710#endif 1258#endif
711 1259
712#define EVUNLOOP_RECURSE 0x80 1260#define EVBREAK_RECURSE 0x80
713 1261
714/*****************************************************************************/ 1262/*****************************************************************************/
715 1263
716#ifndef EV_HAVE_EV_TIME 1264#ifndef EV_HAVE_EV_TIME
717ev_tstamp 1265ev_tstamp
… …
761 if (delay > 0.) 1309 if (delay > 0.)
762 { 1310 {
763#if EV_USE_NANOSLEEP 1311#if EV_USE_NANOSLEEP
764 struct timespec ts; 1312 struct timespec ts;
765 1313
766 ts.tv_sec = (time_t)delay; 1314 EV_TS_SET (ts, delay);
767 ts.tv_nsec = (long)((delay - (ev_tstamp)(ts.tv_sec)) * 1e9);
768
769 nanosleep (&ts, 0); 1315 nanosleep (&ts, 0);
770#elif defined(_WIN32) 1316#elif defined(_WIN32)
771 Sleep ((unsigned long)(delay * 1e3)); 1317 Sleep ((unsigned long)(delay * 1e3));
772#else 1318#else
773 struct timeval tv; 1319 struct timeval tv;
774 1320
775 tv.tv_sec = (time_t)delay;
776 tv.tv_usec = (long)((delay - (ev_tstamp)(tv.tv_sec)) * 1e6);
777
778 /* here we rely on sys/time.h + sys/types.h + unistd.h providing select */ 1321 /* here we rely on sys/time.h + sys/types.h + unistd.h providing select */
779 /* something not guaranteed by newer posix versions, but guaranteed */ 1322 /* something not guaranteed by newer posix versions, but guaranteed */
780 /* by older ones */ 1323 /* by older ones */
1324 EV_TV_SET (tv, delay);
781 select (0, 0, 0, 0, &tv); 1325 select (0, 0, 0, 0, &tv);
782#endif 1326#endif
783 } 1327 }
784} 1328}
785 1329
786/*****************************************************************************/ 1330/*****************************************************************************/
787 1331
788#define MALLOC_ROUND 4096 /* prefer to allocate in chunks of this size, must be 2**n and >> 4 longs */ 1332#define MALLOC_ROUND 4096 /* prefer to allocate in chunks of this size, must be 2**n and >> 4 longs */
789 1333
790/* find a suitable new size for the given array, */ 1334/* find a suitable new size for the given array, */
791/* hopefully by rounding to a ncie-to-malloc size */ 1335/* hopefully by rounding to a nice-to-malloc size */
792inline_size int 1336inline_size int
793array_nextsize (int elem, int cur, int cnt) 1337array_nextsize (int elem, int cur, int cnt)
794{ 1338{
795 int ncur = cur + 1; 1339 int ncur = cur + 1;
796 1340
797 do 1341 do
798 ncur <<= 1; 1342 ncur <<= 1;
799 while (cnt > ncur); 1343 while (cnt > ncur);
800 1344
801 /* if size is large, round to MALLOC_ROUND - 4 * longs to accomodate malloc overhead */ 1345 /* if size is large, round to MALLOC_ROUND - 4 * longs to accommodate malloc overhead */
802 if (elem * ncur > MALLOC_ROUND - sizeof (void *) * 4) 1346 if (elem * ncur > MALLOC_ROUND - sizeof (void *) * 4)
803 { 1347 {
804 ncur *= elem; 1348 ncur *= elem;
805 ncur = (ncur + elem + (MALLOC_ROUND - 1) + sizeof (void *) * 4) & ~(MALLOC_ROUND - 1); 1349 ncur = (ncur + elem + (MALLOC_ROUND - 1) + sizeof (void *) * 4) & ~(MALLOC_ROUND - 1);
806 ncur = ncur - sizeof (void *) * 4; 1350 ncur = ncur - sizeof (void *) * 4;
… …
808 } 1352 }
809 1353
810 return ncur; 1354 return ncur;
811} 1355}
812 1356
813static noinline void * 1357static void * noinline ecb_cold
814array_realloc (int elem, void *base, int *cur, int cnt) 1358array_realloc (int elem, void *base, int *cur, int cnt)
815{ 1359{
816 *cur = array_nextsize (elem, *cur, cnt); 1360 *cur = array_nextsize (elem, *cur, cnt);
817 return ev_realloc (base, elem * *cur); 1361 return ev_realloc (base, elem * *cur);
818} 1362}
… …
821 memset ((void *)(base), 0, sizeof (*(base)) * (count)) 1365 memset ((void *)(base), 0, sizeof (*(base)) * (count))
822 1366
823#define array_needsize(type,base,cur,cnt,init) \ 1367#define array_needsize(type,base,cur,cnt,init) \
824 if (expect_false ((cnt) > (cur))) \ 1368 if (expect_false ((cnt) > (cur))) \
825 { \ 1369 { \
826 int ocur_ = (cur); \ 1370 int ecb_unused ocur_ = (cur); \
827 (base) = (type *)array_realloc \ 1371 (base) = (type *)array_realloc \
828 (sizeof (type), (base), &(cur), (cnt)); \ 1372 (sizeof (type), (base), &(cur), (cnt)); \
829 init ((base) + (ocur_), (cur) - ocur_); \ 1373 init ((base) + (ocur_), (cur) - ocur_); \
830 } 1374 }
831 1375
… …
931inline_size void 1475inline_size void
932fd_reify (EV_P) 1476fd_reify (EV_P)
933{ 1477{
934 int i; 1478 int i;
935 1479
1480#if EV_SELECT_IS_WINSOCKET || EV_USE_IOCP
1481 for (i = 0; i < fdchangecnt; ++i)
1482 {
1483 int fd = fdchanges [i];
1484 ANFD *anfd = anfds + fd;
1485
1486 if (anfd->reify & EV__IOFDSET && anfd->head)
1487 {
1488 SOCKET handle = EV_FD_TO_WIN32_HANDLE (fd);
1489
1490 if (handle != anfd->handle)
1491 {
1492 unsigned long arg;
1493
1494 assert (("libev: only socket fds supported in this configuration", ioctlsocket (handle, FIONREAD, &arg) == 0));
1495
1496 /* handle changed, but fd didn't - we need to do it in two steps */
1497 backend_modify (EV_A_ fd, anfd->events, 0);
1498 anfd->events = 0;
1499 anfd->handle = handle;
1500 }
1501 }
1502 }
1503#endif
1504
936 for (i = 0; i < fdchangecnt; ++i) 1505 for (i = 0; i < fdchangecnt; ++i)
937 { 1506 {
938 int fd = fdchanges [i]; 1507 int fd = fdchanges [i];
939 ANFD *anfd = anfds + fd; 1508 ANFD *anfd = anfds + fd;
940 ev_io *w; 1509 ev_io *w;
941 1510
942 unsigned char events = 0; 1511 unsigned char o_events = anfd->events;
1512 unsigned char o_reify = anfd->reify;
943 1513
944 for (w = (ev_io *)anfd->head; w; w = (ev_io *)((WL)w)->next) 1514 anfd->reify = 0;
945 events |= (unsigned char)w->events;
946 1515
947#if EV_SELECT_IS_WINSOCKET 1516 /*if (expect_true (o_reify & EV_ANFD_REIFY)) probably a deoptimisation */
948 if (events)
949 { 1517 {
950 unsigned long arg; 1518 anfd->events = 0;
951 anfd->handle = EV_FD_TO_WIN32_HANDLE (fd); 1519
952 assert (("libev: only socket fds supported in this configuration", ioctlsocket (anfd->handle, FIONREAD, &arg) == 0)); 1520 for (w = (ev_io *)anfd->head; w; w = (ev_io *)((WL)w)->next)
1521 anfd->events |= (unsigned char)w->events;
1522
1523 if (o_events != anfd->events)
1524 o_reify = EV__IOFDSET; /* actually |= */
953 } 1525 }
954#endif
955 1526
956 { 1527 if (o_reify & EV__IOFDSET)
957 unsigned char o_events = anfd->events;
958 unsigned char o_reify = anfd->reify;
959
960 anfd->reify = 0;
961 anfd->events = events;
962
963 if (o_events != events || o_reify & EV__IOFDSET)
964 backend_modify (EV_A_ fd, o_events, events); 1528 backend_modify (EV_A_ fd, o_events, anfd->events);
965 }
966 } 1529 }
967 1530
968 fdchangecnt = 0; 1531 fdchangecnt = 0;
969} 1532}
970 1533
… …
982 fdchanges [fdchangecnt - 1] = fd; 1545 fdchanges [fdchangecnt - 1] = fd;
983 } 1546 }
984} 1547}
985 1548
986/* the given fd is invalid/unusable, so make sure it doesn't hurt us anymore */ 1549/* the given fd is invalid/unusable, so make sure it doesn't hurt us anymore */
987inline_speed void 1550inline_speed void ecb_cold
988fd_kill (EV_P_ int fd) 1551fd_kill (EV_P_ int fd)
989{ 1552{
990 ev_io *w; 1553 ev_io *w;
991 1554
992 while ((w = (ev_io *)anfds [fd].head)) 1555 while ((w = (ev_io *)anfds [fd].head))
… …
995 ev_feed_event (EV_A_ (W)w, EV_ERROR | EV_READ | EV_WRITE); 1558 ev_feed_event (EV_A_ (W)w, EV_ERROR | EV_READ | EV_WRITE);
996 } 1559 }
997} 1560}
998 1561
999/* check whether the given fd is actually valid, for error recovery */ 1562/* check whether the given fd is actually valid, for error recovery */
1000inline_size int 1563inline_size int ecb_cold
1001fd_valid (int fd) 1564fd_valid (int fd)
1002{ 1565{
1003#ifdef _WIN32 1566#ifdef _WIN32
1004 return EV_FD_TO_WIN32_HANDLE (fd) != -1; 1567 return EV_FD_TO_WIN32_HANDLE (fd) != -1;
1005#else 1568#else
1006 return fcntl (fd, F_GETFD) != -1; 1569 return fcntl (fd, F_GETFD) != -1;
1007#endif 1570#endif
1008} 1571}
1009 1572
1010/* called on EBADF to verify fds */ 1573/* called on EBADF to verify fds */
1011static void noinline 1574static void noinline ecb_cold
1012fd_ebadf (EV_P) 1575fd_ebadf (EV_P)
1013{ 1576{
1014 int fd; 1577 int fd;
1015 1578
1016 for (fd = 0; fd < anfdmax; ++fd) 1579 for (fd = 0; fd < anfdmax; ++fd)
… …
1018 if (!fd_valid (fd) && errno == EBADF) 1581 if (!fd_valid (fd) && errno == EBADF)
1019 fd_kill (EV_A_ fd); 1582 fd_kill (EV_A_ fd);
1020} 1583}
1021 1584
1022/* called on ENOMEM in select/poll to kill some fds and retry */ 1585/* called on ENOMEM in select/poll to kill some fds and retry */
1023static void noinline 1586static void noinline ecb_cold
1024fd_enomem (EV_P) 1587fd_enomem (EV_P)
1025{ 1588{
1026 int fd; 1589 int fd;
1027 1590
1028 for (fd = anfdmax; fd--; ) 1591 for (fd = anfdmax; fd--; )
… …
1063} 1626}
1064 1627
1065/*****************************************************************************/ 1628/*****************************************************************************/
1066 1629
1067/* 1630/*
1068 * the heap functions want a real array index. array index 0 uis guaranteed to not 1631 * the heap functions want a real array index. array index 0 is guaranteed to not
1069 * be in-use at any time. the first heap entry is at array [HEAP0]. DHEAP gives 1632 * be in-use at any time. the first heap entry is at array [HEAP0]. DHEAP gives
1070 * the branching factor of the d-tree. 1633 * the branching factor of the d-tree.
1071 */ 1634 */
1072 1635
1073/* 1636/*
… …
1223 1786
1224/*****************************************************************************/ 1787/*****************************************************************************/
1225 1788
1226#if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE 1789#if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE
1227 1790
1228static void noinline 1791static void noinline ecb_cold
1229evpipe_init (EV_P) 1792evpipe_init (EV_P)
1230{ 1793{
1231 if (!ev_is_active (&pipe_w)) 1794 if (!ev_is_active (&pipe_w))
1232 { 1795 {
1233# if EV_USE_EVENTFD 1796# if EV_USE_EVENTFD
… …
1255 ev_io_start (EV_A_ &pipe_w); 1818 ev_io_start (EV_A_ &pipe_w);
1256 ev_unref (EV_A); /* watcher should not keep loop alive */ 1819 ev_unref (EV_A); /* watcher should not keep loop alive */
1257 } 1820 }
1258} 1821}
1259 1822
1260inline_size void 1823inline_speed void
1261evpipe_write (EV_P_ EV_ATOMIC_T *flag) 1824evpipe_write (EV_P_ EV_ATOMIC_T *flag)
1262{ 1825{
1263 if (!*flag) 1826 if (expect_true (*flag))
1827 return;
1828
1829 *flag = 1;
1830
1831 ECB_MEMORY_FENCE_RELEASE; /* make sure flag is visible before the wakeup */
1832
1833 pipe_write_skipped = 1;
1834
1835 ECB_MEMORY_FENCE; /* make sure pipe_write_skipped is visible before we check pipe_write_wanted */
1836
1837 if (pipe_write_wanted)
1264 { 1838 {
1839 int old_errno;
1840
1841 pipe_write_skipped = 0; /* just an optimisation, no fence needed */
1842
1265 int old_errno = errno; /* save errno because write might clobber it */ 1843 old_errno = errno; /* save errno because write will clobber it */
1266 char dummy;
1267
1268 *flag = 1;
1269 1844
1270#if EV_USE_EVENTFD 1845#if EV_USE_EVENTFD
1271 if (evfd >= 0) 1846 if (evfd >= 0)
1272 { 1847 {
1273 uint64_t counter = 1; 1848 uint64_t counter = 1;
1274 write (evfd, &counter, sizeof (uint64_t)); 1849 write (evfd, &counter, sizeof (uint64_t));
1275 } 1850 }
1276 else 1851 else
1277#endif 1852#endif
1853 {
1854 /* win32 people keep sending patches that change this write() to send() */
1855 /* and then run away. but send() is wrong, it wants a socket handle on win32 */
1856 /* so when you think this write should be a send instead, please find out */
1857 /* where your send() is from - it's definitely not the microsoft send, and */
1858 /* tell me. thank you. */
1278 write (evpipe [1], &dummy, 1); 1859 write (evpipe [1], &(evpipe [1]), 1);
1860 }
1279 1861
1280 errno = old_errno; 1862 errno = old_errno;
1281 } 1863 }
1282} 1864}
1283 1865
… …
1286static void 1868static void
1287pipecb (EV_P_ ev_io *iow, int revents) 1869pipecb (EV_P_ ev_io *iow, int revents)
1288{ 1870{
1289 int i; 1871 int i;
1290 1872
1873 if (revents & EV_READ)
1874 {
1291#if EV_USE_EVENTFD 1875#if EV_USE_EVENTFD
1292 if (evfd >= 0) 1876 if (evfd >= 0)
1293 { 1877 {
1294 uint64_t counter; 1878 uint64_t counter;
1295 read (evfd, &counter, sizeof (uint64_t)); 1879 read (evfd, &counter, sizeof (uint64_t));
1296 } 1880 }
1297 else 1881 else
1298#endif 1882#endif
1299 { 1883 {
1300 char dummy; 1884 char dummy;
1885 /* see discussion in evpipe_write when you think this read should be recv in win32 */
1301 read (evpipe [0], &dummy, 1); 1886 read (evpipe [0], &dummy, 1);
1887 }
1302 } 1888 }
1303 1889
1890 pipe_write_skipped = 0;
1891
1892#if EV_SIGNAL_ENABLE
1304 if (sig_pending) 1893 if (sig_pending)
1305 { 1894 {
1306 sig_pending = 0; 1895 sig_pending = 0;
1307 1896
1308 for (i = EV_NSIG - 1; i--; ) 1897 for (i = EV_NSIG - 1; i--; )
1309 if (expect_false (signals [i].pending)) 1898 if (expect_false (signals [i].pending))
1310 ev_feed_signal_event (EV_A_ i + 1); 1899 ev_feed_signal_event (EV_A_ i + 1);
1311 } 1900 }
1901#endif
1312 1902
1313#if EV_ASYNC_ENABLE 1903#if EV_ASYNC_ENABLE
1314 if (async_pending) 1904 if (async_pending)
1315 { 1905 {
1316 async_pending = 0; 1906 async_pending = 0;
… …
1325#endif 1915#endif
1326} 1916}
1327 1917
1328/*****************************************************************************/ 1918/*****************************************************************************/
1329 1919
1920void
1921ev_feed_signal (int signum)
1922{
1923#if EV_MULTIPLICITY
1924 EV_P = signals [signum - 1].loop;
1925
1926 if (!EV_A)
1927 return;
1928#endif
1929
1930 if (!ev_active (&pipe_w))
1931 return;
1932
1933 signals [signum - 1].pending = 1;
1934 evpipe_write (EV_A_ &sig_pending);
1935}
1936
1330static void 1937static void
1331ev_sighandler (int signum) 1938ev_sighandler (int signum)
1332{ 1939{
1333#if EV_MULTIPLICITY
1334 EV_P = signals [signum - 1].loop;
1335#endif
1336
1337#ifdef _WIN32 1940#ifdef _WIN32
1338 signal (signum, ev_sighandler); 1941 signal (signum, ev_sighandler);
1339#endif 1942#endif
1340 1943
1341 signals [signum - 1].pending = 1; 1944 ev_feed_signal (signum);
1342 evpipe_write (EV_A_ &sig_pending);
1343} 1945}
1344 1946
1345void noinline 1947void noinline
1346ev_feed_signal_event (EV_P_ int signum) 1948ev_feed_signal_event (EV_P_ int signum)
1347{ 1949{
… …
1447 2049
1448#endif 2050#endif
1449 2051
1450/*****************************************************************************/ 2052/*****************************************************************************/
1451 2053
2054#if EV_USE_IOCP
2055# include "ev_iocp.c"
2056#endif
1452#if EV_USE_PORT 2057#if EV_USE_PORT
1453# include "ev_port.c" 2058# include "ev_port.c"
1454#endif 2059#endif
1455#if EV_USE_KQUEUE 2060#if EV_USE_KQUEUE
1456# include "ev_kqueue.c" 2061# include "ev_kqueue.c"
… …
1463#endif 2068#endif
1464#if EV_USE_SELECT 2069#if EV_USE_SELECT
1465# include "ev_select.c" 2070# include "ev_select.c"
1466#endif 2071#endif
1467 2072
1468int 2073int ecb_cold
1469ev_version_major (void) 2074ev_version_major (void)
1470{ 2075{
1471 return EV_VERSION_MAJOR; 2076 return EV_VERSION_MAJOR;
1472} 2077}
1473 2078
1474int 2079int ecb_cold
1475ev_version_minor (void) 2080ev_version_minor (void)
1476{ 2081{
1477 return EV_VERSION_MINOR; 2082 return EV_VERSION_MINOR;
1478} 2083}
1479 2084
1480/* return true if we are running with elevated privileges and should ignore env variables */ 2085/* return true if we are running with elevated privileges and should ignore env variables */
1481int inline_size 2086int inline_size ecb_cold
1482enable_secure (void) 2087enable_secure (void)
1483{ 2088{
1484#ifdef _WIN32 2089#ifdef _WIN32
1485 return 0; 2090 return 0;
1486#else 2091#else
1487 return getuid () != geteuid () 2092 return getuid () != geteuid ()
1488 || getgid () != getegid (); 2093 || getgid () != getegid ();
1489#endif 2094#endif
1490} 2095}
1491 2096
1492unsigned int 2097unsigned int ecb_cold
1493ev_supported_backends (void) 2098ev_supported_backends (void)
1494{ 2099{
1495 unsigned int flags = 0; 2100 unsigned int flags = 0;
1496 2101
1497 if (EV_USE_PORT ) flags |= EVBACKEND_PORT; 2102 if (EV_USE_PORT ) flags |= EVBACKEND_PORT;
… …
1501 if (EV_USE_SELECT) flags |= EVBACKEND_SELECT; 2106 if (EV_USE_SELECT) flags |= EVBACKEND_SELECT;
1502 2107
1503 return flags; 2108 return flags;
1504} 2109}
1505 2110
1506unsigned int 2111unsigned int ecb_cold
1507ev_recommended_backends (void) 2112ev_recommended_backends (void)
1508{ 2113{
1509 unsigned int flags = ev_supported_backends (); 2114 unsigned int flags = ev_supported_backends ();
1510 2115
1511#ifndef __NetBSD__ 2116#ifndef __NetBSD__
… …
1523#endif 2128#endif
1524 2129
1525 return flags; 2130 return flags;
1526} 2131}
1527 2132
1528unsigned int 2133unsigned int ecb_cold
1529ev_embeddable_backends (void) 2134ev_embeddable_backends (void)
1530{ 2135{
1531 int flags = EVBACKEND_EPOLL | EVBACKEND_KQUEUE | EVBACKEND_PORT; 2136 int flags = EVBACKEND_EPOLL | EVBACKEND_KQUEUE | EVBACKEND_PORT;
1532 2137
1533 /* epoll embeddability broken on all linux versions up to at least 2.6.23 */ 2138 /* epoll embeddability broken on all linux versions up to at least 2.6.23 */
1534 /* please fix it and tell me how to detect the fix */ 2139 if (ev_linux_version () < 0x020620) /* disable it on linux < 2.6.32 */
1535 flags &= ~EVBACKEND_EPOLL; 2140 flags &= ~EVBACKEND_EPOLL;
1536 2141
1537 return flags; 2142 return flags;
1538} 2143}
1539 2144
1540unsigned int 2145unsigned int
… …
1578ev_userdata (EV_P) 2183ev_userdata (EV_P)
1579{ 2184{
1580 return userdata; 2185 return userdata;
1581} 2186}
1582 2187
2188void
1583void ev_set_invoke_pending_cb (EV_P_ void (*invoke_pending_cb)(EV_P)) 2189ev_set_invoke_pending_cb (EV_P_ void (*invoke_pending_cb)(EV_P))
1584{ 2190{
1585 invoke_cb = invoke_pending_cb; 2191 invoke_cb = invoke_pending_cb;
1586} 2192}
1587 2193
2194void
1588void ev_set_loop_release_cb (EV_P_ void (*release)(EV_P), void (*acquire)(EV_P)) 2195ev_set_loop_release_cb (EV_P_ void (*release)(EV_P), void (*acquire)(EV_P))
1589{ 2196{
1590 release_cb = release; 2197 release_cb = release;
1591 acquire_cb = acquire; 2198 acquire_cb = acquire;
1592} 2199}
1593#endif 2200#endif
1594 2201
1595/* initialise a loop structure, must be zero-initialised */ 2202/* initialise a loop structure, must be zero-initialised */
1596static void noinline 2203static void noinline ecb_cold
1597loop_init (EV_P_ unsigned int flags) 2204loop_init (EV_P_ unsigned int flags)
1598{ 2205{
1599 if (!backend) 2206 if (!backend)
1600 { 2207 {
2208 origflags = flags;
2209
1601#if EV_USE_REALTIME 2210#if EV_USE_REALTIME
1602 if (!have_realtime) 2211 if (!have_realtime)
1603 { 2212 {
1604 struct timespec ts; 2213 struct timespec ts;
1605 2214
… …
1627 if (!(flags & EVFLAG_NOENV) 2236 if (!(flags & EVFLAG_NOENV)
1628 && !enable_secure () 2237 && !enable_secure ()
1629 && getenv ("LIBEV_FLAGS")) 2238 && getenv ("LIBEV_FLAGS"))
1630 flags = atoi (getenv ("LIBEV_FLAGS")); 2239 flags = atoi (getenv ("LIBEV_FLAGS"));
1631 2240
1632 ev_rt_now = ev_time (); 2241 ev_rt_now = ev_time ();
1633 mn_now = get_clock (); 2242 mn_now = get_clock ();
1634 now_floor = mn_now; 2243 now_floor = mn_now;
1635 rtmn_diff = ev_rt_now - mn_now; 2244 rtmn_diff = ev_rt_now - mn_now;
1636#if EV_FEATURE_API 2245#if EV_FEATURE_API
1637 invoke_cb = ev_invoke_pending; 2246 invoke_cb = ev_invoke_pending;
1638#endif 2247#endif
1639 2248
1640 io_blocktime = 0.; 2249 io_blocktime = 0.;
1641 timeout_blocktime = 0.; 2250 timeout_blocktime = 0.;
1642 backend = 0; 2251 backend = 0;
1643 backend_fd = -1; 2252 backend_fd = -1;
1644 sig_pending = 0; 2253 sig_pending = 0;
1645#if EV_ASYNC_ENABLE 2254#if EV_ASYNC_ENABLE
1646 async_pending = 0; 2255 async_pending = 0;
1647#endif 2256#endif
2257 pipe_write_skipped = 0;
2258 pipe_write_wanted = 0;
1648#if EV_USE_INOTIFY 2259#if EV_USE_INOTIFY
1649 fs_fd = flags & EVFLAG_NOINOTIFY ? -1 : -2; 2260 fs_fd = flags & EVFLAG_NOINOTIFY ? -1 : -2;
1650#endif 2261#endif
1651#if EV_USE_SIGNALFD 2262#if EV_USE_SIGNALFD
1652 sigfd = flags & EVFLAG_SIGNALFD ? -2 : -1; 2263 sigfd = flags & EVFLAG_SIGNALFD ? -2 : -1;
1653#endif 2264#endif
1654 2265
1655 if (!(flags & 0x0000ffffU)) 2266 if (!(flags & EVBACKEND_MASK))
1656 flags |= ev_recommended_backends (); 2267 flags |= ev_recommended_backends ();
1657 2268
2269#if EV_USE_IOCP
2270 if (!backend && (flags & EVBACKEND_IOCP )) backend = iocp_init (EV_A_ flags);
2271#endif
1658#if EV_USE_PORT 2272#if EV_USE_PORT
1659 if (!backend && (flags & EVBACKEND_PORT )) backend = port_init (EV_A_ flags); 2273 if (!backend && (flags & EVBACKEND_PORT )) backend = port_init (EV_A_ flags);
1660#endif 2274#endif
1661#if EV_USE_KQUEUE 2275#if EV_USE_KQUEUE
1662 if (!backend && (flags & EVBACKEND_KQUEUE)) backend = kqueue_init (EV_A_ flags); 2276 if (!backend && (flags & EVBACKEND_KQUEUE)) backend = kqueue_init (EV_A_ flags);
… …
1679#endif 2293#endif
1680 } 2294 }
1681} 2295}
1682 2296
1683/* free up a loop structure */ 2297/* free up a loop structure */
1684static void noinline 2298void ecb_cold
1685loop_destroy (EV_P) 2299ev_loop_destroy (EV_P)
1686{ 2300{
1687 int i; 2301 int i;
2302
2303#if EV_MULTIPLICITY
2304 /* mimic free (0) */
2305 if (!EV_A)
2306 return;
2307#endif
2308
2309#if EV_CLEANUP_ENABLE
2310 /* queue cleanup watchers (and execute them) */
2311 if (expect_false (cleanupcnt))
2312 {
2313 queue_events (EV_A_ (W *)cleanups, cleanupcnt, EV_CLEANUP);
2314 EV_INVOKE_PENDING;
2315 }
2316#endif
2317
2318#if EV_CHILD_ENABLE
2319 if (ev_is_active (&childev))
2320 {
2321 ev_ref (EV_A); /* child watcher */
2322 ev_signal_stop (EV_A_ &childev);
2323 }
2324#endif
1688 2325
1689 if (ev_is_active (&pipe_w)) 2326 if (ev_is_active (&pipe_w))
1690 { 2327 {
1691 /*ev_ref (EV_A);*/ 2328 /*ev_ref (EV_A);*/
1692 /*ev_io_stop (EV_A_ &pipe_w);*/ 2329 /*ev_io_stop (EV_A_ &pipe_w);*/
… …
1714#endif 2351#endif
1715 2352
1716 if (backend_fd >= 0) 2353 if (backend_fd >= 0)
1717 close (backend_fd); 2354 close (backend_fd);
1718 2355
2356#if EV_USE_IOCP
2357 if (backend == EVBACKEND_IOCP ) iocp_destroy (EV_A);
2358#endif
1719#if EV_USE_PORT 2359#if EV_USE_PORT
1720 if (backend == EVBACKEND_PORT ) port_destroy (EV_A); 2360 if (backend == EVBACKEND_PORT ) port_destroy (EV_A);
1721#endif 2361#endif
1722#if EV_USE_KQUEUE 2362#if EV_USE_KQUEUE
1723 if (backend == EVBACKEND_KQUEUE) kqueue_destroy (EV_A); 2363 if (backend == EVBACKEND_KQUEUE) kqueue_destroy (EV_A);
… …
1750 array_free (periodic, EMPTY); 2390 array_free (periodic, EMPTY);
1751#endif 2391#endif
1752#if EV_FORK_ENABLE 2392#if EV_FORK_ENABLE
1753 array_free (fork, EMPTY); 2393 array_free (fork, EMPTY);
1754#endif 2394#endif
2395#if EV_CLEANUP_ENABLE
2396 array_free (cleanup, EMPTY);
2397#endif
1755 array_free (prepare, EMPTY); 2398 array_free (prepare, EMPTY);
1756 array_free (check, EMPTY); 2399 array_free (check, EMPTY);
1757#if EV_ASYNC_ENABLE 2400#if EV_ASYNC_ENABLE
1758 array_free (async, EMPTY); 2401 array_free (async, EMPTY);
1759#endif 2402#endif
1760 2403
1761 backend = 0; 2404 backend = 0;
2405
2406#if EV_MULTIPLICITY
2407 if (ev_is_default_loop (EV_A))
2408#endif
2409 ev_default_loop_ptr = 0;
2410#if EV_MULTIPLICITY
2411 else
2412 ev_free (EV_A);
2413#endif
1762} 2414}
1763 2415
1764#if EV_USE_INOTIFY 2416#if EV_USE_INOTIFY
1765inline_size void infy_fork (EV_P); 2417inline_size void infy_fork (EV_P);
1766#endif 2418#endif
… …
1781 infy_fork (EV_A); 2433 infy_fork (EV_A);
1782#endif 2434#endif
1783 2435
1784 if (ev_is_active (&pipe_w)) 2436 if (ev_is_active (&pipe_w))
1785 { 2437 {
1786 /* this "locks" the handlers against writing to the pipe */ 2438 /* pipe_write_wanted must be false now, so modifying fd vars should be safe */
1787 /* while we modify the fd vars */
1788 sig_pending = 1;
1789#if EV_ASYNC_ENABLE
1790 async_pending = 1;
1791#endif
1792 2439
1793 ev_ref (EV_A); 2440 ev_ref (EV_A);
1794 ev_io_stop (EV_A_ &pipe_w); 2441 ev_io_stop (EV_A_ &pipe_w);
1795 2442
1796#if EV_USE_EVENTFD 2443#if EV_USE_EVENTFD
… …
1814 postfork = 0; 2461 postfork = 0;
1815} 2462}
1816 2463
1817#if EV_MULTIPLICITY 2464#if EV_MULTIPLICITY
1818 2465
1819struct ev_loop * 2466struct ev_loop * ecb_cold
1820ev_loop_new (unsigned int flags) 2467ev_loop_new (unsigned int flags)
1821{ 2468{
1822 EV_P = (struct ev_loop *)ev_malloc (sizeof (struct ev_loop)); 2469 EV_P = (struct ev_loop *)ev_malloc (sizeof (struct ev_loop));
1823 2470
1824 memset (EV_A, 0, sizeof (struct ev_loop)); 2471 memset (EV_A, 0, sizeof (struct ev_loop));
1825 loop_init (EV_A_ flags); 2472 loop_init (EV_A_ flags);
1826 2473
1827 if (ev_backend (EV_A)) 2474 if (ev_backend (EV_A))
1828 return EV_A; 2475 return EV_A;
1829 2476
2477 ev_free (EV_A);
1830 return 0; 2478 return 0;
1831} 2479}
1832 2480
1833void
1834ev_loop_destroy (EV_P)
1835{
1836 loop_destroy (EV_A);
1837 ev_free (loop);
1838}
1839
1840void
1841ev_loop_fork (EV_P)
1842{
1843 postfork = 1; /* must be in line with ev_default_fork */
1844}
1845#endif /* multiplicity */ 2481#endif /* multiplicity */
1846 2482
1847#if EV_VERIFY 2483#if EV_VERIFY
1848static void noinline 2484static void noinline ecb_cold
1849verify_watcher (EV_P_ W w) 2485verify_watcher (EV_P_ W w)
1850{ 2486{
1851 assert (("libev: watcher has invalid priority", ABSPRI (w) >= 0 && ABSPRI (w) < NUMPRI)); 2487 assert (("libev: watcher has invalid priority", ABSPRI (w) >= 0 && ABSPRI (w) < NUMPRI));
1852 2488
1853 if (w->pending) 2489 if (w->pending)
1854 assert (("libev: pending watcher not on pending queue", pendings [ABSPRI (w)][w->pending - 1].w == w)); 2490 assert (("libev: pending watcher not on pending queue", pendings [ABSPRI (w)][w->pending - 1].w == w));
1855} 2491}
1856 2492
1857static void noinline 2493static void noinline ecb_cold
1858verify_heap (EV_P_ ANHE *heap, int N) 2494verify_heap (EV_P_ ANHE *heap, int N)
1859{ 2495{
1860 int i; 2496 int i;
1861 2497
1862 for (i = HEAP0; i < N + HEAP0; ++i) 2498 for (i = HEAP0; i < N + HEAP0; ++i)
… …
1867 2503
1868 verify_watcher (EV_A_ (W)ANHE_w (heap [i])); 2504 verify_watcher (EV_A_ (W)ANHE_w (heap [i]));
1869 } 2505 }
1870} 2506}
1871 2507
1872static void noinline 2508static void noinline ecb_cold
1873array_verify (EV_P_ W *ws, int cnt) 2509array_verify (EV_P_ W *ws, int cnt)
1874{ 2510{
1875 while (cnt--) 2511 while (cnt--)
1876 { 2512 {
1877 assert (("libev: active index mismatch", ev_active (ws [cnt]) == cnt + 1)); 2513 assert (("libev: active index mismatch", ev_active (ws [cnt]) == cnt + 1));
… …
1879 } 2515 }
1880} 2516}
1881#endif 2517#endif
1882 2518
1883#if EV_FEATURE_API 2519#if EV_FEATURE_API
1884void 2520void ecb_cold
1885ev_verify (EV_P) 2521ev_verify (EV_P)
1886{ 2522{
1887#if EV_VERIFY 2523#if EV_VERIFY
1888 int i; 2524 int i;
1889 WL w; 2525 WL w;
… …
1924#if EV_FORK_ENABLE 2560#if EV_FORK_ENABLE
1925 assert (forkmax >= forkcnt); 2561 assert (forkmax >= forkcnt);
1926 array_verify (EV_A_ (W *)forks, forkcnt); 2562 array_verify (EV_A_ (W *)forks, forkcnt);
1927#endif 2563#endif
1928 2564
2565#if EV_CLEANUP_ENABLE
2566 assert (cleanupmax >= cleanupcnt);
2567 array_verify (EV_A_ (W *)cleanups, cleanupcnt);
2568#endif
2569
1929#if EV_ASYNC_ENABLE 2570#if EV_ASYNC_ENABLE
1930 assert (asyncmax >= asynccnt); 2571 assert (asyncmax >= asynccnt);
1931 array_verify (EV_A_ (W *)asyncs, asynccnt); 2572 array_verify (EV_A_ (W *)asyncs, asynccnt);
1932#endif 2573#endif
1933 2574
… …
1950#endif 2591#endif
1951} 2592}
1952#endif 2593#endif
1953 2594
1954#if EV_MULTIPLICITY 2595#if EV_MULTIPLICITY
1955struct ev_loop * 2596struct ev_loop * ecb_cold
1956ev_default_loop_init (unsigned int flags)
1957#else 2597#else
1958int 2598int
2599#endif
1959ev_default_loop (unsigned int flags) 2600ev_default_loop (unsigned int flags)
1960#endif
1961{ 2601{
1962 if (!ev_default_loop_ptr) 2602 if (!ev_default_loop_ptr)
1963 { 2603 {
1964#if EV_MULTIPLICITY 2604#if EV_MULTIPLICITY
1965 EV_P = ev_default_loop_ptr = &default_loop_struct; 2605 EV_P = ev_default_loop_ptr = &default_loop_struct;
… …
1984 2624
1985 return ev_default_loop_ptr; 2625 return ev_default_loop_ptr;
1986} 2626}
1987 2627
1988void 2628void
1989ev_default_destroy (void) 2629ev_loop_fork (EV_P)
1990{ 2630{
1991#if EV_MULTIPLICITY
1992 EV_P = ev_default_loop_ptr;
1993#endif
1994
1995 ev_default_loop_ptr = 0;
1996
1997#if EV_CHILD_ENABLE
1998 ev_ref (EV_A); /* child watcher */
1999 ev_signal_stop (EV_A_ &childev);
2000#endif
2001
2002 loop_destroy (EV_A);
2003}
2004
2005void
2006ev_default_fork (void)
2007{
2008#if EV_MULTIPLICITY
2009 EV_P = ev_default_loop_ptr;
2010#endif
2011
2012 postfork = 1; /* must be in line with ev_loop_fork */ 2631 postfork = 1; /* must be in line with ev_default_fork */
2013} 2632}
2014 2633
2015/*****************************************************************************/ 2634/*****************************************************************************/
2016 2635
2017void 2636void
… …
2039 2658
2040 for (pri = NUMPRI; pri--; ) 2659 for (pri = NUMPRI; pri--; )
2041 while (pendingcnt [pri]) 2660 while (pendingcnt [pri])
2042 { 2661 {
2043 ANPENDING *p = pendings [pri] + --pendingcnt [pri]; 2662 ANPENDING *p = pendings [pri] + --pendingcnt [pri];
2044
2045 /*assert (("libev: non-pending watcher on pending list", p->w->pending));*/
2046 /* ^ this is no longer true, as pending_w could be here */
2047 2663
2048 p->w->pending = 0; 2664 p->w->pending = 0;
2049 EV_CB_INVOKE (p->w, p->events); 2665 EV_CB_INVOKE (p->w, p->events);
2050 EV_FREQUENT_CHECK; 2666 EV_FREQUENT_CHECK;
2051 } 2667 }
… …
2113 feed_reverse_done (EV_A_ EV_TIMER); 2729 feed_reverse_done (EV_A_ EV_TIMER);
2114 } 2730 }
2115} 2731}
2116 2732
2117#if EV_PERIODIC_ENABLE 2733#if EV_PERIODIC_ENABLE
2734
2735static void noinline
2736periodic_recalc (EV_P_ ev_periodic *w)
2737{
2738 ev_tstamp interval = w->interval > MIN_INTERVAL ? w->interval : MIN_INTERVAL;
2739 ev_tstamp at = w->offset + interval * ev_floor ((ev_rt_now - w->offset) / interval);
2740
2741 /* the above almost always errs on the low side */
2742 while (at <= ev_rt_now)
2743 {
2744 ev_tstamp nat = at + w->interval;
2745
2746 /* when resolution fails us, we use ev_rt_now */
2747 if (expect_false (nat == at))
2748 {
2749 at = ev_rt_now;
2750 break;
2751 }
2752
2753 at = nat;
2754 }
2755
2756 ev_at (w) = at;
2757}
2758
2118/* make periodics pending */ 2759/* make periodics pending */
2119inline_size void 2760inline_size void
2120periodics_reify (EV_P) 2761periodics_reify (EV_P)
2121{ 2762{
2122 EV_FREQUENT_CHECK; 2763 EV_FREQUENT_CHECK;
… …
2141 ANHE_at_cache (periodics [HEAP0]); 2782 ANHE_at_cache (periodics [HEAP0]);
2142 downheap (periodics, periodiccnt, HEAP0); 2783 downheap (periodics, periodiccnt, HEAP0);
2143 } 2784 }
2144 else if (w->interval) 2785 else if (w->interval)
2145 { 2786 {
2146 ev_at (w) = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval; 2787 periodic_recalc (EV_A_ w);
2147 /* if next trigger time is not sufficiently in the future, put it there */
2148 /* this might happen because of floating point inexactness */
2149 if (ev_at (w) - ev_rt_now < TIME_EPSILON)
2150 {
2151 ev_at (w) += w->interval;
2152
2153 /* if interval is unreasonably low we might still have a time in the past */
2154 /* so correct this. this will make the periodic very inexact, but the user */
2155 /* has effectively asked to get triggered more often than possible */
2156 if (ev_at (w) < ev_rt_now)
2157 ev_at (w) = ev_rt_now;
2158 }
2159
2160 ANHE_at_cache (periodics [HEAP0]); 2788 ANHE_at_cache (periodics [HEAP0]);
2161 downheap (periodics, periodiccnt, HEAP0); 2789 downheap (periodics, periodiccnt, HEAP0);
2162 } 2790 }
2163 else 2791 else
2164 ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */ 2792 ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */
… …
2171 feed_reverse_done (EV_A_ EV_PERIODIC); 2799 feed_reverse_done (EV_A_ EV_PERIODIC);
2172 } 2800 }
2173} 2801}
2174 2802
2175/* simply recalculate all periodics */ 2803/* simply recalculate all periodics */
2176/* TODO: maybe ensure that at leats one event happens when jumping forward? */ 2804/* TODO: maybe ensure that at least one event happens when jumping forward? */
2177static void noinline 2805static void noinline ecb_cold
2178periodics_reschedule (EV_P) 2806periodics_reschedule (EV_P)
2179{ 2807{
2180 int i; 2808 int i;
2181 2809
2182 /* adjust periodics after time jump */ 2810 /* adjust periodics after time jump */
… …
2185 ev_periodic *w = (ev_periodic *)ANHE_w (periodics [i]); 2813 ev_periodic *w = (ev_periodic *)ANHE_w (periodics [i]);
2186 2814
2187 if (w->reschedule_cb) 2815 if (w->reschedule_cb)
2188 ev_at (w) = w->reschedule_cb (w, ev_rt_now); 2816 ev_at (w) = w->reschedule_cb (w, ev_rt_now);
2189 else if (w->interval) 2817 else if (w->interval)
2190 ev_at (w) = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval; 2818 periodic_recalc (EV_A_ w);
2191 2819
2192 ANHE_at_cache (periodics [i]); 2820 ANHE_at_cache (periodics [i]);
2193 } 2821 }
2194 2822
2195 reheap (periodics, periodiccnt); 2823 reheap (periodics, periodiccnt);
2196} 2824}
2197#endif 2825#endif
2198 2826
2199/* adjust all timers by a given offset */ 2827/* adjust all timers by a given offset */
2200static void noinline 2828static void noinline ecb_cold
2201timers_reschedule (EV_P_ ev_tstamp adjust) 2829timers_reschedule (EV_P_ ev_tstamp adjust)
2202{ 2830{
2203 int i; 2831 int i;
2204 2832
2205 for (i = 0; i < timercnt; ++i) 2833 for (i = 0; i < timercnt; ++i)
… …
2242 * doesn't hurt either as we only do this on time-jumps or 2870 * doesn't hurt either as we only do this on time-jumps or
2243 * in the unlikely event of having been preempted here. 2871 * in the unlikely event of having been preempted here.
2244 */ 2872 */
2245 for (i = 4; --i; ) 2873 for (i = 4; --i; )
2246 { 2874 {
2875 ev_tstamp diff;
2247 rtmn_diff = ev_rt_now - mn_now; 2876 rtmn_diff = ev_rt_now - mn_now;
2248 2877
2878 diff = odiff - rtmn_diff;
2879
2249 if (expect_true (fabs (odiff - rtmn_diff) < MIN_TIMEJUMP)) 2880 if (expect_true ((diff < 0. ? -diff : diff) < MIN_TIMEJUMP))
2250 return; /* all is well */ 2881 return; /* all is well */
2251 2882
2252 ev_rt_now = ev_time (); 2883 ev_rt_now = ev_time ();
2253 mn_now = get_clock (); 2884 mn_now = get_clock ();
2254 now_floor = mn_now; 2885 now_floor = mn_now;
… …
2277 mn_now = ev_rt_now; 2908 mn_now = ev_rt_now;
2278 } 2909 }
2279} 2910}
2280 2911
2281void 2912void
2282ev_loop (EV_P_ int flags) 2913ev_run (EV_P_ int flags)
2283{ 2914{
2284#if EV_FEATURE_API 2915#if EV_FEATURE_API
2285 ++loop_depth; 2916 ++loop_depth;
2286#endif 2917#endif
2287 2918
2288 assert (("libev: ev_loop recursion during release detected", loop_done != EVUNLOOP_RECURSE)); 2919 assert (("libev: ev_loop recursion during release detected", loop_done != EVBREAK_RECURSE));
2289 2920
2290 loop_done = EVUNLOOP_CANCEL; 2921 loop_done = EVBREAK_CANCEL;
2291 2922
2292 EV_INVOKE_PENDING; /* in case we recurse, ensure ordering stays nice and clean */ 2923 EV_INVOKE_PENDING; /* in case we recurse, ensure ordering stays nice and clean */
2293 2924
2294 do 2925 do
2295 { 2926 {
… …
2338 /* calculate blocking time */ 2969 /* calculate blocking time */
2339 { 2970 {
2340 ev_tstamp waittime = 0.; 2971 ev_tstamp waittime = 0.;
2341 ev_tstamp sleeptime = 0.; 2972 ev_tstamp sleeptime = 0.;
2342 2973
2974 /* remember old timestamp for io_blocktime calculation */
2975 ev_tstamp prev_mn_now = mn_now;
2976
2977 /* update time to cancel out callback processing overhead */
2978 time_update (EV_A_ 1e100);
2979
2980 /* from now on, we want a pipe-wake-up */
2981 pipe_write_wanted = 1;
2982
2983 ECB_MEMORY_FENCE; /* make sure pipe_write_wanted is visible before we check for potential skips */
2984
2343 if (expect_true (!(flags & EVLOOP_NONBLOCK || idleall || !activecnt))) 2985 if (expect_true (!(flags & EVRUN_NOWAIT || idleall || !activecnt || pipe_write_skipped)))
2344 { 2986 {
2345 /* remember old timestamp for io_blocktime calculation */
2346 ev_tstamp prev_mn_now = mn_now;
2347
2348 /* update time to cancel out callback processing overhead */
2349 time_update (EV_A_ 1e100);
2350
2351 waittime = MAX_BLOCKTIME; 2987 waittime = MAX_BLOCKTIME;
2352 2988
2353 if (timercnt) 2989 if (timercnt)
2354 { 2990 {
2355 ev_tstamp to = ANHE_at (timers [HEAP0]) - mn_now + backend_fudge; 2991 ev_tstamp to = ANHE_at (timers [HEAP0]) - mn_now;
2356 if (waittime > to) waittime = to; 2992 if (waittime > to) waittime = to;
2357 } 2993 }
2358 2994
2359#if EV_PERIODIC_ENABLE 2995#if EV_PERIODIC_ENABLE
2360 if (periodiccnt) 2996 if (periodiccnt)
2361 { 2997 {
2362 ev_tstamp to = ANHE_at (periodics [HEAP0]) - ev_rt_now + backend_fudge; 2998 ev_tstamp to = ANHE_at (periodics [HEAP0]) - ev_rt_now;
2363 if (waittime > to) waittime = to; 2999 if (waittime > to) waittime = to;
2364 } 3000 }
2365#endif 3001#endif
2366 3002
2367 /* don't let timeouts decrease the waittime below timeout_blocktime */ 3003 /* don't let timeouts decrease the waittime below timeout_blocktime */
2368 if (expect_false (waittime < timeout_blocktime)) 3004 if (expect_false (waittime < timeout_blocktime))
2369 waittime = timeout_blocktime; 3005 waittime = timeout_blocktime;
3006
3007 /* at this point, we NEED to wait, so we have to ensure */
3008 /* to pass a minimum nonzero value to the backend */
3009 if (expect_false (waittime < backend_mintime))
3010 waittime = backend_mintime;
2370 3011
2371 /* extra check because io_blocktime is commonly 0 */ 3012 /* extra check because io_blocktime is commonly 0 */
2372 if (expect_false (io_blocktime)) 3013 if (expect_false (io_blocktime))
2373 { 3014 {
2374 sleeptime = io_blocktime - (mn_now - prev_mn_now); 3015 sleeptime = io_blocktime - (mn_now - prev_mn_now);
2375 3016
2376 if (sleeptime > waittime - backend_fudge) 3017 if (sleeptime > waittime - backend_mintime)
2377 sleeptime = waittime - backend_fudge; 3018 sleeptime = waittime - backend_mintime;
2378 3019
2379 if (expect_true (sleeptime > 0.)) 3020 if (expect_true (sleeptime > 0.))
2380 { 3021 {
2381 ev_sleep (sleeptime); 3022 ev_sleep (sleeptime);
2382 waittime -= sleeptime; 3023 waittime -= sleeptime;
… …
2385 } 3026 }
2386 3027
2387#if EV_FEATURE_API 3028#if EV_FEATURE_API
2388 ++loop_count; 3029 ++loop_count;
2389#endif 3030#endif
2390 assert ((loop_done = EVUNLOOP_RECURSE, 1)); /* assert for side effect */ 3031 assert ((loop_done = EVBREAK_RECURSE, 1)); /* assert for side effect */
2391 backend_poll (EV_A_ waittime); 3032 backend_poll (EV_A_ waittime);
2392 assert ((loop_done = EVUNLOOP_CANCEL, 1)); /* assert for side effect */ 3033 assert ((loop_done = EVBREAK_CANCEL, 1)); /* assert for side effect */
3034
3035 pipe_write_wanted = 0; /* just an optimisation, no fence needed */
3036
3037 if (pipe_write_skipped)
3038 {
3039 assert (("libev: pipe_w not active, but pipe not written", ev_is_active (&pipe_w)));
3040 ev_feed_event (EV_A_ &pipe_w, EV_CUSTOM);
3041 }
3042
2393 3043
2394 /* update ev_rt_now, do magic */ 3044 /* update ev_rt_now, do magic */
2395 time_update (EV_A_ waittime + sleeptime); 3045 time_update (EV_A_ waittime + sleeptime);
2396 } 3046 }
2397 3047
… …
2415 EV_INVOKE_PENDING; 3065 EV_INVOKE_PENDING;
2416 } 3066 }
2417 while (expect_true ( 3067 while (expect_true (
2418 activecnt 3068 activecnt
2419 && !loop_done 3069 && !loop_done
2420 && !(flags & (EVLOOP_ONESHOT | EVLOOP_NONBLOCK)) 3070 && !(flags & (EVRUN_ONCE | EVRUN_NOWAIT))
2421 )); 3071 ));
2422 3072
2423 if (loop_done == EVUNLOOP_ONE) 3073 if (loop_done == EVBREAK_ONE)
2424 loop_done = EVUNLOOP_CANCEL; 3074 loop_done = EVBREAK_CANCEL;
2425 3075
2426#if EV_FEATURE_API 3076#if EV_FEATURE_API
2427 --loop_depth; 3077 --loop_depth;
2428#endif 3078#endif
2429} 3079}
2430 3080
2431void 3081void
2432ev_unloop (EV_P_ int how) 3082ev_break (EV_P_ int how)
2433{ 3083{
2434 loop_done = how; 3084 loop_done = how;
2435} 3085}
2436 3086
2437void 3087void
… …
2585 EV_FREQUENT_CHECK; 3235 EV_FREQUENT_CHECK;
2586 3236
2587 wlist_del (&anfds[w->fd].head, (WL)w); 3237 wlist_del (&anfds[w->fd].head, (WL)w);
2588 ev_stop (EV_A_ (W)w); 3238 ev_stop (EV_A_ (W)w);
2589 3239
2590 fd_change (EV_A_ w->fd, 1); 3240 fd_change (EV_A_ w->fd, EV_ANFD_REIFY);
2591 3241
2592 EV_FREQUENT_CHECK; 3242 EV_FREQUENT_CHECK;
2593} 3243}
2594 3244
2595void noinline 3245void noinline
… …
2687 if (w->reschedule_cb) 3337 if (w->reschedule_cb)
2688 ev_at (w) = w->reschedule_cb (w, ev_rt_now); 3338 ev_at (w) = w->reschedule_cb (w, ev_rt_now);
2689 else if (w->interval) 3339 else if (w->interval)
2690 { 3340 {
2691 assert (("libev: ev_periodic_start called with negative interval value", w->interval >= 0.)); 3341 assert (("libev: ev_periodic_start called with negative interval value", w->interval >= 0.));
2692 /* this formula differs from the one in periodic_reify because we do not always round up */ 3342 periodic_recalc (EV_A_ w);
2693 ev_at (w) = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval;
2694 } 3343 }
2695 else 3344 else
2696 ev_at (w) = w->offset; 3345 ev_at (w) = w->offset;
2697 3346
2698 EV_FREQUENT_CHECK; 3347 EV_FREQUENT_CHECK;
… …
2819 sa.sa_handler = ev_sighandler; 3468 sa.sa_handler = ev_sighandler;
2820 sigfillset (&sa.sa_mask); 3469 sigfillset (&sa.sa_mask);
2821 sa.sa_flags = SA_RESTART; /* if restarting works we save one iteration */ 3470 sa.sa_flags = SA_RESTART; /* if restarting works we save one iteration */
2822 sigaction (w->signum, &sa, 0); 3471 sigaction (w->signum, &sa, 0);
2823 3472
3473 if (origflags & EVFLAG_NOSIGMASK)
3474 {
2824 sigemptyset (&sa.sa_mask); 3475 sigemptyset (&sa.sa_mask);
2825 sigaddset (&sa.sa_mask, w->signum); 3476 sigaddset (&sa.sa_mask, w->signum);
2826 sigprocmask (SIG_UNBLOCK, &sa.sa_mask, 0); 3477 sigprocmask (SIG_UNBLOCK, &sa.sa_mask, 0);
3478 }
2827#endif 3479#endif
2828 } 3480 }
2829 3481
2830 EV_FREQUENT_CHECK; 3482 EV_FREQUENT_CHECK;
2831} 3483}
… …
2972 if (!pend || pend == path) 3624 if (!pend || pend == path)
2973 break; 3625 break;
2974 3626
2975 *pend = 0; 3627 *pend = 0;
2976 w->wd = inotify_add_watch (fs_fd, path, mask); 3628 w->wd = inotify_add_watch (fs_fd, path, mask);
2977 } 3629 }
2978 while (w->wd < 0 && (errno == ENOENT || errno == EACCES)); 3630 while (w->wd < 0 && (errno == ENOENT || errno == EACCES));
2979 } 3631 }
2980 } 3632 }
2981 3633
2982 if (w->wd >= 0) 3634 if (w->wd >= 0)
… …
3049 infy_wd (EV_A_ ev->wd, ev->wd, ev); 3701 infy_wd (EV_A_ ev->wd, ev->wd, ev);
3050 ofs += sizeof (struct inotify_event) + ev->len; 3702 ofs += sizeof (struct inotify_event) + ev->len;
3051 } 3703 }
3052} 3704}
3053 3705
3054inline_size unsigned int
3055ev_linux_version (void)
3056{
3057 struct utsname buf;
3058 unsigned int v;
3059 int i;
3060 char *p = buf.release;
3061
3062 if (uname (&buf))
3063 return 0;
3064
3065 for (i = 3+1; --i; )
3066 {
3067 unsigned int c = 0;
3068
3069 for (;;)
3070 {
3071 if (*p >= '0' && *p <= '9')
3072 c = c * 10 + *p++ - '0';
3073 else
3074 {
3075 p += *p == '.';
3076 break;
3077 }
3078 }
3079
3080 v = (v << 8) | c;
3081 }
3082
3083 return v;
3084}
3085
3086inline_size void 3706inline_size void ecb_cold
3087ev_check_2625 (EV_P) 3707ev_check_2625 (EV_P)
3088{ 3708{
3089 /* kernels < 2.6.25 are borked 3709 /* kernels < 2.6.25 are borked
3090 * http://www.ussg.indiana.edu/hypermail/linux/kernel/0711.3/1208.html 3710 * http://www.ussg.indiana.edu/hypermail/linux/kernel/0711.3/1208.html
3091 */ 3711 */
… …
3412 4032
3413#if EV_EMBED_ENABLE 4033#if EV_EMBED_ENABLE
3414void noinline 4034void noinline
3415ev_embed_sweep (EV_P_ ev_embed *w) 4035ev_embed_sweep (EV_P_ ev_embed *w)
3416{ 4036{
3417 ev_loop (w->other, EVLOOP_NONBLOCK); 4037 ev_run (w->other, EVRUN_NOWAIT);
3418} 4038}
3419 4039
3420static void 4040static void
3421embed_io_cb (EV_P_ ev_io *io, int revents) 4041embed_io_cb (EV_P_ ev_io *io, int revents)
3422{ 4042{
3423 ev_embed *w = (ev_embed *)(((char *)io) - offsetof (ev_embed, io)); 4043 ev_embed *w = (ev_embed *)(((char *)io) - offsetof (ev_embed, io));
3424 4044
3425 if (ev_cb (w)) 4045 if (ev_cb (w))
3426 ev_feed_event (EV_A_ (W)w, EV_EMBED); 4046 ev_feed_event (EV_A_ (W)w, EV_EMBED);
3427 else 4047 else
3428 ev_loop (w->other, EVLOOP_NONBLOCK); 4048 ev_run (w->other, EVRUN_NOWAIT);
3429} 4049}
3430 4050
3431static void 4051static void
3432embed_prepare_cb (EV_P_ ev_prepare *prepare, int revents) 4052embed_prepare_cb (EV_P_ ev_prepare *prepare, int revents)
3433{ 4053{
… …
3437 EV_P = w->other; 4057 EV_P = w->other;
3438 4058
3439 while (fdchangecnt) 4059 while (fdchangecnt)
3440 { 4060 {
3441 fd_reify (EV_A); 4061 fd_reify (EV_A);
3442 ev_loop (EV_A_ EVLOOP_NONBLOCK); 4062 ev_run (EV_A_ EVRUN_NOWAIT);
3443 } 4063 }
3444 } 4064 }
3445} 4065}
3446 4066
3447static void 4067static void
… …
3453 4073
3454 { 4074 {
3455 EV_P = w->other; 4075 EV_P = w->other;
3456 4076
3457 ev_loop_fork (EV_A); 4077 ev_loop_fork (EV_A);
3458 ev_loop (EV_A_ EVLOOP_NONBLOCK); 4078 ev_run (EV_A_ EVRUN_NOWAIT);
3459 } 4079 }
3460 4080
3461 ev_embed_start (EV_A_ w); 4081 ev_embed_start (EV_A_ w);
3462} 4082}
3463 4083
… …
3555 4175
3556 EV_FREQUENT_CHECK; 4176 EV_FREQUENT_CHECK;
3557} 4177}
3558#endif 4178#endif
3559 4179
4180#if EV_CLEANUP_ENABLE
4181void
4182ev_cleanup_start (EV_P_ ev_cleanup *w)
4183{
4184 if (expect_false (ev_is_active (w)))
4185 return;
4186
4187 EV_FREQUENT_CHECK;
4188
4189 ev_start (EV_A_ (W)w, ++cleanupcnt);
4190 array_needsize (ev_cleanup *, cleanups, cleanupmax, cleanupcnt, EMPTY2);
4191 cleanups [cleanupcnt - 1] = w;
4192
4193 /* cleanup watchers should never keep a refcount on the loop */
4194 ev_unref (EV_A);
4195 EV_FREQUENT_CHECK;
4196}
4197
4198void
4199ev_cleanup_stop (EV_P_ ev_cleanup *w)
4200{
4201 clear_pending (EV_A_ (W)w);
4202 if (expect_false (!ev_is_active (w)))
4203 return;
4204
4205 EV_FREQUENT_CHECK;
4206 ev_ref (EV_A);
4207
4208 {
4209 int active = ev_active (w);
4210
4211 cleanups [active - 1] = cleanups [--cleanupcnt];
4212 ev_active (cleanups [active - 1]) = active;
4213 }
4214
4215 ev_stop (EV_A_ (W)w);
4216
4217 EV_FREQUENT_CHECK;
4218}
4219#endif
4220
3560#if EV_ASYNC_ENABLE 4221#if EV_ASYNC_ENABLE
3561void 4222void
3562ev_async_start (EV_P_ ev_async *w) 4223ev_async_start (EV_P_ ev_async *w)
3563{ 4224{
3564 if (expect_false (ev_is_active (w))) 4225 if (expect_false (ev_is_active (w)))
3565 return; 4226 return;
4227
4228 w->sent = 0;
3566 4229
3567 evpipe_init (EV_A); 4230 evpipe_init (EV_A);
3568 4231
3569 EV_FREQUENT_CHECK; 4232 EV_FREQUENT_CHECK;
3570 4233
… …
3673} 4336}
3674 4337
3675/*****************************************************************************/ 4338/*****************************************************************************/
3676 4339
3677#if EV_WALK_ENABLE 4340#if EV_WALK_ENABLE
3678void 4341void ecb_cold
3679ev_walk (EV_P_ int types, void (*cb)(EV_P_ int type, void *w)) 4342ev_walk (EV_P_ int types, void (*cb)(EV_P_ int type, void *w))
3680{ 4343{
3681 int i, j; 4344 int i, j;
3682 ev_watcher_list *wl, *wn; 4345 ev_watcher_list *wl, *wn;
3683 4346
… …
3727 cb (EV_A_ EV_PERIODIC, ANHE_w (periodics [i])); 4390 cb (EV_A_ EV_PERIODIC, ANHE_w (periodics [i]));
3728#endif 4391#endif
3729 4392
3730#if EV_IDLE_ENABLE 4393#if EV_IDLE_ENABLE
3731 if (types & EV_IDLE) 4394 if (types & EV_IDLE)
3732 for (j = NUMPRI; i--; ) 4395 for (j = NUMPRI; j--; )
3733 for (i = idlecnt [j]; i--; ) 4396 for (i = idlecnt [j]; i--; )
3734 cb (EV_A_ EV_IDLE, idles [j][i]); 4397 cb (EV_A_ EV_IDLE, idles [j][i]);
3735#endif 4398#endif
3736 4399
3737#if EV_FORK_ENABLE 4400#if EV_FORK_ENABLE
… …
3790 4453
3791#if EV_MULTIPLICITY 4454#if EV_MULTIPLICITY
3792 #include "ev_wrap.h" 4455 #include "ev_wrap.h"
3793#endif 4456#endif
3794 4457
3795#ifdef __cplusplus
3796}
3797#endif
3798

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