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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 1.411 by root, Tue Feb 21 04:34:02 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
… …
180 181
181#ifdef EV_H 182#ifdef EV_H
182# include EV_H 183# include EV_H
183#else 184#else
184# include "ev.h" 185# include "ev.h"
186#endif
187
188#if EV_NO_THREADS
189# undef EV_NO_SMP
190# define EV_NO_SMP 1
191# undef ECB_NO_THREADS
192# define ECB_NO_THREADS 1
193#endif
194#if EV_NO_SMP
195# undef EV_NO_SMP
196# define ECB_NO_SMP 1
185#endif 197#endif
186 198
187#ifndef _WIN32 199#ifndef _WIN32
188# include <sys/time.h> 200# include <sys/time.h>
189# include <sys/wait.h> 201# include <sys/wait.h>
… …
195# ifndef EV_SELECT_IS_WINSOCKET 207# ifndef EV_SELECT_IS_WINSOCKET
196# define EV_SELECT_IS_WINSOCKET 1 208# define EV_SELECT_IS_WINSOCKET 1
197# endif 209# endif
198# undef EV_AVOID_STDIO 210# undef EV_AVOID_STDIO
199#endif 211#endif
212
213/* OS X, in its infinite idiocy, actually HARDCODES
214 * a limit of 1024 into their select. Where people have brains,
215 * OS X engineers apparently have a vacuum. Or maybe they were
216 * ordered to have a vacuum, or they do anything for money.
217 * This might help. Or not.
218 */
219#define _DARWIN_UNLIMITED_SELECT 1
200 220
201/* this block tries to deduce configuration from header-defined symbols and defaults */ 221/* this block tries to deduce configuration from header-defined symbols and defaults */
202 222
203/* try to deduce the maximum number of signals on this platform */ 223/* try to deduce the maximum number of signals on this platform */
204#if defined (EV_NSIG) 224#if defined (EV_NSIG)
… …
226/* to make it compile regardless, just remove the above line, */ 246/* to make it compile regardless, just remove the above line, */
227/* but consider reporting it, too! :) */ 247/* but consider reporting it, too! :) */
228# define EV_NSIG 65 248# define EV_NSIG 65
229#endif 249#endif
230 250
251#ifndef EV_USE_FLOOR
252# define EV_USE_FLOOR 0
253#endif
254
231#ifndef EV_USE_CLOCK_SYSCALL 255#ifndef EV_USE_CLOCK_SYSCALL
232# if __linux && __GLIBC__ >= 2 256# if __linux && __GLIBC__ >= 2
233# define EV_USE_CLOCK_SYSCALL EV_FEATURE_OS 257# define EV_USE_CLOCK_SYSCALL EV_FEATURE_OS
234# else 258# else
235# define EV_USE_CLOCK_SYSCALL 0 259# define EV_USE_CLOCK_SYSCALL 0
… …
370# undef EV_USE_INOTIFY 394# undef EV_USE_INOTIFY
371# define EV_USE_INOTIFY 0 395# define EV_USE_INOTIFY 0
372#endif 396#endif
373 397
374#if !EV_USE_NANOSLEEP 398#if !EV_USE_NANOSLEEP
375# ifndef _WIN32 399/* hp-ux has it in sys/time.h, which we unconditionally include above */
400# if !defined(_WIN32) && !defined(__hpux)
376# include <sys/select.h> 401# include <sys/select.h>
377# endif 402# endif
378#endif 403#endif
379 404
380#if EV_USE_INOTIFY 405#if EV_USE_INOTIFY
381# include <sys/utsname.h>
382# include <sys/statfs.h> 406# include <sys/statfs.h>
383# include <sys/inotify.h> 407# include <sys/inotify.h>
384/* some very old inotify.h headers don't have IN_DONT_FOLLOW */ 408/* some very old inotify.h headers don't have IN_DONT_FOLLOW */
385# ifndef IN_DONT_FOLLOW 409# ifndef IN_DONT_FOLLOW
386# undef EV_USE_INOTIFY 410# undef EV_USE_INOTIFY
… …
403# define EFD_CLOEXEC O_CLOEXEC 427# define EFD_CLOEXEC O_CLOEXEC
404# else 428# else
405# define EFD_CLOEXEC 02000000 429# define EFD_CLOEXEC 02000000
406# endif 430# endif
407# endif 431# endif
408# ifdef __cplusplus
409extern "C" {
410# endif
411int (eventfd) (unsigned int initval, int flags); 432EV_CPP(extern "C") int (eventfd) (unsigned int initval, int flags);
412# ifdef __cplusplus
413}
414# endif
415#endif 433#endif
416 434
417#if EV_USE_SIGNALFD 435#if EV_USE_SIGNALFD
418/* our minimum requirement is glibc 2.7 which has the stub, but not the header */ 436/* our minimum requirement is glibc 2.7 which has the stub, but not the header */
419# include <stdint.h> 437# include <stdint.h>
… …
425# define SFD_CLOEXEC O_CLOEXEC 443# define SFD_CLOEXEC O_CLOEXEC
426# else 444# else
427# define SFD_CLOEXEC 02000000 445# define SFD_CLOEXEC 02000000
428# endif 446# endif
429# endif 447# endif
430# ifdef __cplusplus
431extern "C" {
432# endif
433int signalfd (int fd, const sigset_t *mask, int flags); 448EV_CPP (extern "C") int signalfd (int fd, const sigset_t *mask, int flags);
434 449
435struct signalfd_siginfo 450struct signalfd_siginfo
436{ 451{
437 uint32_t ssi_signo; 452 uint32_t ssi_signo;
438 char pad[128 - sizeof (uint32_t)]; 453 char pad[128 - sizeof (uint32_t)];
439}; 454};
440# ifdef __cplusplus
441}
442# endif 455#endif
443#endif
444
445 456
446/**/ 457/**/
447 458
448#if EV_VERIFY >= 3 459#if EV_VERIFY >= 3
449# define EV_FREQUENT_CHECK ev_verify (EV_A) 460# define EV_FREQUENT_CHECK ev_verify (EV_A)
450#else 461#else
451# define EV_FREQUENT_CHECK do { } while (0) 462# define EV_FREQUENT_CHECK do { } while (0)
452#endif 463#endif
453 464
454/* 465/*
455 * This is used to avoid floating point rounding problems. 466 * 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. 467 * This value is good at least till the year 4000.
460 * Better solutions welcome.
461 */ 468 */
462#define TIME_EPSILON 0.0001220703125 /* 1/8192 */ 469#define MIN_INTERVAL 0.0001220703125 /* 1/2**13, good till 4000 */
470/*#define MIN_INTERVAL 0.00000095367431640625 /* 1/2**20, good till 2200 */
463 471
464#define MIN_TIMEJUMP 1. /* minimum timejump that gets detected (if monotonic clock available) */ 472#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) */ 473#define MAX_BLOCKTIME 59.743 /* never wait longer than this time (to detect time jumps) */
466 474
475#define EV_TV_SET(tv,t) do { tv.tv_sec = (long)t; tv.tv_usec = (long)((t - tv.tv_sec) * 1e6); } while (0)
476#define EV_TS_SET(ts,t) do { ts.tv_sec = (long)t; ts.tv_nsec = (long)((t - ts.tv_sec) * 1e9); } while (0)
477
478/* the following is ecb.h embedded into libev - use update_ev_c to update from an external copy */
479/* ECB.H BEGIN */
480/*
481 * libecb - http://software.schmorp.de/pkg/libecb
482 *
483 * Copyright (©) 2009-2012 Marc Alexander Lehmann <libecb@schmorp.de>
484 * Copyright (©) 2011 Emanuele Giaquinta
485 * All rights reserved.
486 *
487 * Redistribution and use in source and binary forms, with or without modifica-
488 * tion, are permitted provided that the following conditions are met:
489 *
490 * 1. Redistributions of source code must retain the above copyright notice,
491 * this list of conditions and the following disclaimer.
492 *
493 * 2. Redistributions in binary form must reproduce the above copyright
494 * notice, this list of conditions and the following disclaimer in the
495 * documentation and/or other materials provided with the distribution.
496 *
497 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR IMPLIED
498 * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MER-
499 * CHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO
500 * EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPE-
501 * CIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
502 * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS;
503 * OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
504 * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTH-
505 * ERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
506 * OF THE POSSIBILITY OF SUCH DAMAGE.
507 */
508
509#ifndef ECB_H
510#define ECB_H
511
512#ifdef _WIN32
513 typedef signed char int8_t;
514 typedef unsigned char uint8_t;
515 typedef signed short int16_t;
516 typedef unsigned short uint16_t;
517 typedef signed int int32_t;
518 typedef unsigned int uint32_t;
467#if __GNUC__ >= 4 519 #if __GNUC__
468# define expect(expr,value) __builtin_expect ((expr),(value)) 520 typedef signed long long int64_t;
469# define noinline __attribute__ ((noinline)) 521 typedef unsigned long long uint64_t;
522 #else /* _MSC_VER || __BORLANDC__ */
523 typedef signed __int64 int64_t;
524 typedef unsigned __int64 uint64_t;
525 #endif
470#else 526#else
471# define expect(expr,value) (expr) 527 #include <inttypes.h>
472# define noinline
473# if __STDC_VERSION__ < 199901L && __GNUC__ < 2
474# define inline
475# endif 528#endif
529
530/* many compilers define _GNUC_ to some versions but then only implement
531 * what their idiot authors think are the "more important" extensions,
532 * causing enormous grief in return for some better fake benchmark numbers.
533 * or so.
534 * we try to detect these and simply assume they are not gcc - if they have
535 * an issue with that they should have done it right in the first place.
536 */
537#ifndef ECB_GCC_VERSION
538 #if !defined(__GNUC_MINOR__) || defined(__INTEL_COMPILER) || defined(__SUNPRO_C) || defined(__SUNPRO_CC) || defined(__llvm__) || defined(__clang__)
539 #define ECB_GCC_VERSION(major,minor) 0
540 #else
541 #define ECB_GCC_VERSION(major,minor) (__GNUC__ > (major) || (__GNUC__ == (major) && __GNUC_MINOR__ >= (minor)))
476#endif 542 #endif
543#endif
477 544
545/*****************************************************************************/
546
547/* ECB_NO_THREADS - ecb is not used by multiple threads, ever */
548/* ECB_NO_SMP - ecb might be used in multiple threads, but only on a single cpu */
549
550#if ECB_NO_THREADS
551# define ECB_NO_SMP 1
552#endif
553
554#if ECB_NO_THREADS || ECB_NO_SMP
555 #define ECB_MEMORY_FENCE do { } while (0)
556#endif
557
558#ifndef ECB_MEMORY_FENCE
559 #if ECB_GCC_VERSION(2,5) || defined(__INTEL_COMPILER) || (__llvm__ && __GNUC__) || __SUNPRO_C >= 0x5110 || __SUNPRO_CC >= 0x5110
560 #if __i386 || __i386__
561 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("lock; orb $0, -1(%%esp)" : : : "memory")
562 #define ECB_MEMORY_FENCE_ACQUIRE ECB_MEMORY_FENCE /* non-lock xchg might be enough */
563 #define ECB_MEMORY_FENCE_RELEASE do { } while (0) /* unlikely to change in future cpus */
564 #elif __amd64 || __amd64__ || __x86_64 || __x86_64__
565 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("mfence" : : : "memory")
566 #define ECB_MEMORY_FENCE_ACQUIRE __asm__ __volatile__ ("lfence" : : : "memory")
567 #define ECB_MEMORY_FENCE_RELEASE __asm__ __volatile__ ("sfence") /* play safe - not needed in any current cpu */
568 #elif __powerpc__ || __ppc__ || __powerpc64__ || __ppc64__
569 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("sync" : : : "memory")
570 #elif defined(__ARM_ARCH_6__ ) || defined(__ARM_ARCH_6J__ ) \
571 || defined(__ARM_ARCH_6K__) || defined(__ARM_ARCH_6ZK__)
572 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("mcr p15,0,%0,c7,c10,5" : : "r" (0) : "memory")
573 #elif defined(__ARM_ARCH_7__ ) || defined(__ARM_ARCH_7A__ ) \
574 || defined(__ARM_ARCH_7M__) || defined(__ARM_ARCH_7R__ )
575 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("dmb" : : : "memory")
576 #elif __sparc || __sparc__
577 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("membar #LoadStore | #LoadLoad | #StoreStore | #StoreLoad | " : : : "memory")
578 #define ECB_MEMORY_FENCE_ACQUIRE __asm__ __volatile__ ("membar #LoadStore | #LoadLoad" : : : "memory")
579 #define ECB_MEMORY_FENCE_RELEASE __asm__ __volatile__ ("membar #LoadStore | #StoreStore")
580 #elif defined(__s390__) || defined(__s390x__)
581 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("bcr 15,0" : : : "memory")
582 #endif
583 #endif
584#endif
585
586#ifndef ECB_MEMORY_FENCE
587 #if ECB_GCC_VERSION(4,4) || defined(__INTEL_COMPILER) || defined(__clang__)
588 #define ECB_MEMORY_FENCE __sync_synchronize ()
589 /*#define ECB_MEMORY_FENCE_ACQUIRE ({ char dummy = 0; __sync_lock_test_and_set (&dummy, 1); }) */
590 /*#define ECB_MEMORY_FENCE_RELEASE ({ char dummy = 1; __sync_lock_release (&dummy ); }) */
591 #elif _MSC_VER >= 1400 /* VC++ 2005 */
592 #pragma intrinsic(_ReadBarrier,_WriteBarrier,_ReadWriteBarrier)
593 #define ECB_MEMORY_FENCE _ReadWriteBarrier ()
594 #define ECB_MEMORY_FENCE_ACQUIRE _ReadWriteBarrier () /* according to msdn, _ReadBarrier is not a load fence */
595 #define ECB_MEMORY_FENCE_RELEASE _WriteBarrier ()
596 #elif defined(_WIN32)
597 #include <WinNT.h>
598 #define ECB_MEMORY_FENCE MemoryBarrier () /* actually just xchg on x86... scary */
599 #elif __SUNPRO_C >= 0x5110 || __SUNPRO_CC >= 0x5110
600 #include <mbarrier.h>
601 #define ECB_MEMORY_FENCE __machine_rw_barrier ()
602 #define ECB_MEMORY_FENCE_ACQUIRE __machine_r_barrier ()
603 #define ECB_MEMORY_FENCE_RELEASE __machine_w_barrier ()
604 #endif
605#endif
606
607#ifndef ECB_MEMORY_FENCE
608 #if !ECB_AVOID_PTHREADS
609 /*
610 * if you get undefined symbol references to pthread_mutex_lock,
611 * or failure to find pthread.h, then you should implement
612 * the ECB_MEMORY_FENCE operations for your cpu/compiler
613 * OR provide pthread.h and link against the posix thread library
614 * of your system.
615 */
616 #include <pthread.h>
617 #define ECB_NEEDS_PTHREADS 1
618 #define ECB_MEMORY_FENCE_NEEDS_PTHREADS 1
619
620 static pthread_mutex_t ecb_mf_lock = PTHREAD_MUTEX_INITIALIZER;
621 #define ECB_MEMORY_FENCE do { pthread_mutex_lock (&ecb_mf_lock); pthread_mutex_unlock (&ecb_mf_lock); } while (0)
622 #endif
623#endif
624
625#if !defined(ECB_MEMORY_FENCE_ACQUIRE) && defined(ECB_MEMORY_FENCE)
626 #define ECB_MEMORY_FENCE_ACQUIRE ECB_MEMORY_FENCE
627#endif
628
629#if !defined(ECB_MEMORY_FENCE_RELEASE) && defined(ECB_MEMORY_FENCE)
630 #define ECB_MEMORY_FENCE_RELEASE ECB_MEMORY_FENCE
631#endif
632
633/*****************************************************************************/
634
635#define ECB_C99 (__STDC_VERSION__ >= 199901L)
636
637#if __cplusplus
638 #define ecb_inline static inline
639#elif ECB_GCC_VERSION(2,5)
640 #define ecb_inline static __inline__
641#elif ECB_C99
642 #define ecb_inline static inline
643#else
644 #define ecb_inline static
645#endif
646
647#if ECB_GCC_VERSION(3,3)
648 #define ecb_restrict __restrict__
649#elif ECB_C99
650 #define ecb_restrict restrict
651#else
652 #define ecb_restrict
653#endif
654
655typedef int ecb_bool;
656
657#define ECB_CONCAT_(a, b) a ## b
658#define ECB_CONCAT(a, b) ECB_CONCAT_(a, b)
659#define ECB_STRINGIFY_(a) # a
660#define ECB_STRINGIFY(a) ECB_STRINGIFY_(a)
661
662#define ecb_function_ ecb_inline
663
664#if ECB_GCC_VERSION(3,1)
665 #define ecb_attribute(attrlist) __attribute__(attrlist)
666 #define ecb_is_constant(expr) __builtin_constant_p (expr)
667 #define ecb_expect(expr,value) __builtin_expect ((expr),(value))
668 #define ecb_prefetch(addr,rw,locality) __builtin_prefetch (addr, rw, locality)
669#else
670 #define ecb_attribute(attrlist)
671 #define ecb_is_constant(expr) 0
672 #define ecb_expect(expr,value) (expr)
673 #define ecb_prefetch(addr,rw,locality)
674#endif
675
676/* no emulation for ecb_decltype */
677#if ECB_GCC_VERSION(4,5)
678 #define ecb_decltype(x) __decltype(x)
679#elif ECB_GCC_VERSION(3,0)
680 #define ecb_decltype(x) __typeof(x)
681#endif
682
683#define ecb_noinline ecb_attribute ((__noinline__))
684#define ecb_noreturn ecb_attribute ((__noreturn__))
685#define ecb_unused ecb_attribute ((__unused__))
686#define ecb_const ecb_attribute ((__const__))
687#define ecb_pure ecb_attribute ((__pure__))
688
689#if ECB_GCC_VERSION(4,3)
690 #define ecb_artificial ecb_attribute ((__artificial__))
691 #define ecb_hot ecb_attribute ((__hot__))
692 #define ecb_cold ecb_attribute ((__cold__))
693#else
694 #define ecb_artificial
695 #define ecb_hot
696 #define ecb_cold
697#endif
698
699/* put around conditional expressions if you are very sure that the */
700/* expression is mostly true or mostly false. note that these return */
701/* booleans, not the expression. */
478#define expect_false(expr) expect ((expr) != 0, 0) 702#define ecb_expect_false(expr) ecb_expect (!!(expr), 0)
479#define expect_true(expr) expect ((expr) != 0, 1) 703#define ecb_expect_true(expr) ecb_expect (!!(expr), 1)
704/* for compatibility to the rest of the world */
705#define ecb_likely(expr) ecb_expect_true (expr)
706#define ecb_unlikely(expr) ecb_expect_false (expr)
707
708/* count trailing zero bits and count # of one bits */
709#if ECB_GCC_VERSION(3,4)
710 /* we assume int == 32 bit, long == 32 or 64 bit and long long == 64 bit */
711 #define ecb_ld32(x) (__builtin_clz (x) ^ 31)
712 #define ecb_ld64(x) (__builtin_clzll (x) ^ 63)
713 #define ecb_ctz32(x) __builtin_ctz (x)
714 #define ecb_ctz64(x) __builtin_ctzll (x)
715 #define ecb_popcount32(x) __builtin_popcount (x)
716 /* no popcountll */
717#else
718 ecb_function_ int ecb_ctz32 (uint32_t x) ecb_const;
719 ecb_function_ int
720 ecb_ctz32 (uint32_t x)
721 {
722 int r = 0;
723
724 x &= ~x + 1; /* this isolates the lowest bit */
725
726#if ECB_branchless_on_i386
727 r += !!(x & 0xaaaaaaaa) << 0;
728 r += !!(x & 0xcccccccc) << 1;
729 r += !!(x & 0xf0f0f0f0) << 2;
730 r += !!(x & 0xff00ff00) << 3;
731 r += !!(x & 0xffff0000) << 4;
732#else
733 if (x & 0xaaaaaaaa) r += 1;
734 if (x & 0xcccccccc) r += 2;
735 if (x & 0xf0f0f0f0) r += 4;
736 if (x & 0xff00ff00) r += 8;
737 if (x & 0xffff0000) r += 16;
738#endif
739
740 return r;
741 }
742
743 ecb_function_ int ecb_ctz64 (uint64_t x) ecb_const;
744 ecb_function_ int
745 ecb_ctz64 (uint64_t x)
746 {
747 int shift = x & 0xffffffffU ? 0 : 32;
748 return ecb_ctz32 (x >> shift) + shift;
749 }
750
751 ecb_function_ int ecb_popcount32 (uint32_t x) ecb_const;
752 ecb_function_ int
753 ecb_popcount32 (uint32_t x)
754 {
755 x -= (x >> 1) & 0x55555555;
756 x = ((x >> 2) & 0x33333333) + (x & 0x33333333);
757 x = ((x >> 4) + x) & 0x0f0f0f0f;
758 x *= 0x01010101;
759
760 return x >> 24;
761 }
762
763 ecb_function_ int ecb_ld32 (uint32_t x) ecb_const;
764 ecb_function_ int ecb_ld32 (uint32_t x)
765 {
766 int r = 0;
767
768 if (x >> 16) { x >>= 16; r += 16; }
769 if (x >> 8) { x >>= 8; r += 8; }
770 if (x >> 4) { x >>= 4; r += 4; }
771 if (x >> 2) { x >>= 2; r += 2; }
772 if (x >> 1) { r += 1; }
773
774 return r;
775 }
776
777 ecb_function_ int ecb_ld64 (uint64_t x) ecb_const;
778 ecb_function_ int ecb_ld64 (uint64_t x)
779 {
780 int r = 0;
781
782 if (x >> 32) { x >>= 32; r += 32; }
783
784 return r + ecb_ld32 (x);
785 }
786#endif
787
788ecb_function_ uint8_t ecb_bitrev8 (uint8_t x) ecb_const;
789ecb_function_ uint8_t ecb_bitrev8 (uint8_t x)
790{
791 return ( (x * 0x0802U & 0x22110U)
792 | (x * 0x8020U & 0x88440U)) * 0x10101U >> 16;
793}
794
795ecb_function_ uint16_t ecb_bitrev16 (uint16_t x) ecb_const;
796ecb_function_ uint16_t ecb_bitrev16 (uint16_t x)
797{
798 x = ((x >> 1) & 0x5555) | ((x & 0x5555) << 1);
799 x = ((x >> 2) & 0x3333) | ((x & 0x3333) << 2);
800 x = ((x >> 4) & 0x0f0f) | ((x & 0x0f0f) << 4);
801 x = ( x >> 8 ) | ( x << 8);
802
803 return x;
804}
805
806ecb_function_ uint32_t ecb_bitrev32 (uint32_t x) ecb_const;
807ecb_function_ uint32_t ecb_bitrev32 (uint32_t x)
808{
809 x = ((x >> 1) & 0x55555555) | ((x & 0x55555555) << 1);
810 x = ((x >> 2) & 0x33333333) | ((x & 0x33333333) << 2);
811 x = ((x >> 4) & 0x0f0f0f0f) | ((x & 0x0f0f0f0f) << 4);
812 x = ((x >> 8) & 0x00ff00ff) | ((x & 0x00ff00ff) << 8);
813 x = ( x >> 16 ) | ( x << 16);
814
815 return x;
816}
817
818/* popcount64 is only available on 64 bit cpus as gcc builtin */
819/* so for this version we are lazy */
820ecb_function_ int ecb_popcount64 (uint64_t x) ecb_const;
821ecb_function_ int
822ecb_popcount64 (uint64_t x)
823{
824 return ecb_popcount32 (x) + ecb_popcount32 (x >> 32);
825}
826
827ecb_inline uint8_t ecb_rotl8 (uint8_t x, unsigned int count) ecb_const;
828ecb_inline uint8_t ecb_rotr8 (uint8_t x, unsigned int count) ecb_const;
829ecb_inline uint16_t ecb_rotl16 (uint16_t x, unsigned int count) ecb_const;
830ecb_inline uint16_t ecb_rotr16 (uint16_t x, unsigned int count) ecb_const;
831ecb_inline uint32_t ecb_rotl32 (uint32_t x, unsigned int count) ecb_const;
832ecb_inline uint32_t ecb_rotr32 (uint32_t x, unsigned int count) ecb_const;
833ecb_inline uint64_t ecb_rotl64 (uint64_t x, unsigned int count) ecb_const;
834ecb_inline uint64_t ecb_rotr64 (uint64_t x, unsigned int count) ecb_const;
835
836ecb_inline uint8_t ecb_rotl8 (uint8_t x, unsigned int count) { return (x >> ( 8 - count)) | (x << count); }
837ecb_inline uint8_t ecb_rotr8 (uint8_t x, unsigned int count) { return (x << ( 8 - count)) | (x >> count); }
838ecb_inline uint16_t ecb_rotl16 (uint16_t x, unsigned int count) { return (x >> (16 - count)) | (x << count); }
839ecb_inline uint16_t ecb_rotr16 (uint16_t x, unsigned int count) { return (x << (16 - count)) | (x >> count); }
840ecb_inline uint32_t ecb_rotl32 (uint32_t x, unsigned int count) { return (x >> (32 - count)) | (x << count); }
841ecb_inline uint32_t ecb_rotr32 (uint32_t x, unsigned int count) { return (x << (32 - count)) | (x >> count); }
842ecb_inline uint64_t ecb_rotl64 (uint64_t x, unsigned int count) { return (x >> (64 - count)) | (x << count); }
843ecb_inline uint64_t ecb_rotr64 (uint64_t x, unsigned int count) { return (x << (64 - count)) | (x >> count); }
844
845#if ECB_GCC_VERSION(4,3)
846 #define ecb_bswap16(x) (__builtin_bswap32 (x) >> 16)
847 #define ecb_bswap32(x) __builtin_bswap32 (x)
848 #define ecb_bswap64(x) __builtin_bswap64 (x)
849#else
850 ecb_function_ uint16_t ecb_bswap16 (uint16_t x) ecb_const;
851 ecb_function_ uint16_t
852 ecb_bswap16 (uint16_t x)
853 {
854 return ecb_rotl16 (x, 8);
855 }
856
857 ecb_function_ uint32_t ecb_bswap32 (uint32_t x) ecb_const;
858 ecb_function_ uint32_t
859 ecb_bswap32 (uint32_t x)
860 {
861 return (((uint32_t)ecb_bswap16 (x)) << 16) | ecb_bswap16 (x >> 16);
862 }
863
864 ecb_function_ uint64_t ecb_bswap64 (uint64_t x) ecb_const;
865 ecb_function_ uint64_t
866 ecb_bswap64 (uint64_t x)
867 {
868 return (((uint64_t)ecb_bswap32 (x)) << 32) | ecb_bswap32 (x >> 32);
869 }
870#endif
871
872#if ECB_GCC_VERSION(4,5)
873 #define ecb_unreachable() __builtin_unreachable ()
874#else
875 /* this seems to work fine, but gcc always emits a warning for it :/ */
876 ecb_inline void ecb_unreachable (void) ecb_noreturn;
877 ecb_inline void ecb_unreachable (void) { }
878#endif
879
880/* try to tell the compiler that some condition is definitely true */
881#define ecb_assume(cond) do { if (!(cond)) ecb_unreachable (); } while (0)
882
883ecb_inline unsigned char ecb_byteorder_helper (void) ecb_const;
884ecb_inline unsigned char
885ecb_byteorder_helper (void)
886{
887 const uint32_t u = 0x11223344;
888 return *(unsigned char *)&u;
889}
890
891ecb_inline ecb_bool ecb_big_endian (void) ecb_const;
892ecb_inline ecb_bool ecb_big_endian (void) { return ecb_byteorder_helper () == 0x11; }
893ecb_inline ecb_bool ecb_little_endian (void) ecb_const;
894ecb_inline ecb_bool ecb_little_endian (void) { return ecb_byteorder_helper () == 0x44; }
895
896#if ECB_GCC_VERSION(3,0) || ECB_C99
897 #define ecb_mod(m,n) ((m) % (n) + ((m) % (n) < 0 ? (n) : 0))
898#else
899 #define ecb_mod(m,n) ((m) < 0 ? ((n) - 1 - ((-1 - (m)) % (n))) : ((m) % (n)))
900#endif
901
902#if __cplusplus
903 template<typename T>
904 static inline T ecb_div_rd (T val, T div)
905 {
906 return val < 0 ? - ((-val + div - 1) / div) : (val ) / div;
907 }
908 template<typename T>
909 static inline T ecb_div_ru (T val, T div)
910 {
911 return val < 0 ? - ((-val ) / div) : (val + div - 1) / div;
912 }
913#else
914 #define ecb_div_rd(val,div) ((val) < 0 ? - ((-(val) + (div) - 1) / (div)) : ((val) ) / (div))
915 #define ecb_div_ru(val,div) ((val) < 0 ? - ((-(val) ) / (div)) : ((val) + (div) - 1) / (div))
916#endif
917
918#if ecb_cplusplus_does_not_suck
919 /* does not work for local types (http://www.open-std.org/jtc1/sc22/wg21/docs/papers/2008/n2657.htm) */
920 template<typename T, int N>
921 static inline int ecb_array_length (const T (&arr)[N])
922 {
923 return N;
924 }
925#else
926 #define ecb_array_length(name) (sizeof (name) / sizeof (name [0]))
927#endif
928
929#endif
930
931/* ECB.H END */
932
933#if ECB_MEMORY_FENCE_NEEDS_PTHREADS
934/* if your architecture doesn't need memory fences, e.g. because it is
935 * single-cpu/core, or if you use libev in a project that doesn't use libev
936 * from multiple threads, then you can define ECB_AVOID_PTHREADS when compiling
937 * libev, in which cases the memory fences become nops.
938 * alternatively, you can remove this #error and link against libpthread,
939 * which will then provide the memory fences.
940 */
941# error "memory fences not defined for your architecture, please report"
942#endif
943
944#ifndef ECB_MEMORY_FENCE
945# define ECB_MEMORY_FENCE do { } while (0)
946# define ECB_MEMORY_FENCE_ACQUIRE ECB_MEMORY_FENCE
947# define ECB_MEMORY_FENCE_RELEASE ECB_MEMORY_FENCE
948#endif
949
950#define expect_false(cond) ecb_expect_false (cond)
951#define expect_true(cond) ecb_expect_true (cond)
952#define noinline ecb_noinline
953
480#define inline_size static inline 954#define inline_size ecb_inline
481 955
482#if EV_FEATURE_CODE 956#if EV_FEATURE_CODE
483# define inline_speed static inline 957# define inline_speed ecb_inline
484#else 958#else
485# define inline_speed static noinline 959# define inline_speed static noinline
486#endif 960#endif
487 961
488#define NUMPRI (EV_MAXPRI - EV_MINPRI + 1) 962#define NUMPRI (EV_MAXPRI - EV_MINPRI + 1)
… …
503#define ev_active(w) ((W)(w))->active 977#define ev_active(w) ((W)(w))->active
504#define ev_at(w) ((WT)(w))->at 978#define ev_at(w) ((WT)(w))->at
505 979
506#if EV_USE_REALTIME 980#if EV_USE_REALTIME
507/* sig_atomic_t is used to avoid per-thread variables or locking but still */ 981/* 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 */ 982/* giving it a reasonably high chance of working on typical architectures */
509static EV_ATOMIC_T have_realtime; /* did clock_gettime (CLOCK_REALTIME) work? */ 983static EV_ATOMIC_T have_realtime; /* did clock_gettime (CLOCK_REALTIME) work? */
510#endif 984#endif
511 985
512#if EV_USE_MONOTONIC 986#if EV_USE_MONOTONIC
513static EV_ATOMIC_T have_monotonic; /* did clock_gettime (CLOCK_MONOTONIC) work? */ 987static EV_ATOMIC_T have_monotonic; /* did clock_gettime (CLOCK_MONOTONIC) work? */
… …
527# include "ev_win32.c" 1001# include "ev_win32.c"
528#endif 1002#endif
529 1003
530/*****************************************************************************/ 1004/*****************************************************************************/
531 1005
1006/* define a suitable floor function (only used by periodics atm) */
1007
1008#if EV_USE_FLOOR
1009# include <math.h>
1010# define ev_floor(v) floor (v)
1011#else
1012
1013#include <float.h>
1014
1015/* a floor() replacement function, should be independent of ev_tstamp type */
1016static ev_tstamp noinline
1017ev_floor (ev_tstamp v)
1018{
1019 /* the choice of shift factor is not terribly important */
1020#if FLT_RADIX != 2 /* assume FLT_RADIX == 10 */
1021 const ev_tstamp shift = sizeof (unsigned long) >= 8 ? 10000000000000000000. : 1000000000.;
1022#else
1023 const ev_tstamp shift = sizeof (unsigned long) >= 8 ? 18446744073709551616. : 4294967296.;
1024#endif
1025
1026 /* argument too large for an unsigned long? */
1027 if (expect_false (v >= shift))
1028 {
1029 ev_tstamp f;
1030
1031 if (v == v - 1.)
1032 return v; /* very large number */
1033
1034 f = shift * ev_floor (v * (1. / shift));
1035 return f + ev_floor (v - f);
1036 }
1037
1038 /* special treatment for negative args? */
1039 if (expect_false (v < 0.))
1040 {
1041 ev_tstamp f = -ev_floor (-v);
1042
1043 return f - (f == v ? 0 : 1);
1044 }
1045
1046 /* fits into an unsigned long */
1047 return (unsigned long)v;
1048}
1049
1050#endif
1051
1052/*****************************************************************************/
1053
1054#ifdef __linux
1055# include <sys/utsname.h>
1056#endif
1057
1058static unsigned int noinline ecb_cold
1059ev_linux_version (void)
1060{
1061#ifdef __linux
1062 unsigned int v = 0;
1063 struct utsname buf;
1064 int i;
1065 char *p = buf.release;
1066
1067 if (uname (&buf))
1068 return 0;
1069
1070 for (i = 3+1; --i; )
1071 {
1072 unsigned int c = 0;
1073
1074 for (;;)
1075 {
1076 if (*p >= '0' && *p <= '9')
1077 c = c * 10 + *p++ - '0';
1078 else
1079 {
1080 p += *p == '.';
1081 break;
1082 }
1083 }
1084
1085 v = (v << 8) | c;
1086 }
1087
1088 return v;
1089#else
1090 return 0;
1091#endif
1092}
1093
1094/*****************************************************************************/
1095
532#if EV_AVOID_STDIO 1096#if EV_AVOID_STDIO
533static void noinline 1097static void noinline ecb_cold
534ev_printerr (const char *msg) 1098ev_printerr (const char *msg)
535{ 1099{
536 write (STDERR_FILENO, msg, strlen (msg)); 1100 write (STDERR_FILENO, msg, strlen (msg));
537} 1101}
538#endif 1102#endif
539 1103
540static void (*syserr_cb)(const char *msg); 1104static void (*syserr_cb)(const char *msg);
541 1105
542void 1106void ecb_cold
543ev_set_syserr_cb (void (*cb)(const char *msg)) 1107ev_set_syserr_cb (void (*cb)(const char *msg))
544{ 1108{
545 syserr_cb = cb; 1109 syserr_cb = cb;
546} 1110}
547 1111
548static void noinline 1112static void noinline ecb_cold
549ev_syserr (const char *msg) 1113ev_syserr (const char *msg)
550{ 1114{
551 if (!msg) 1115 if (!msg)
552 msg = "(libev) system error"; 1116 msg = "(libev) system error";
553 1117
554 if (syserr_cb) 1118 if (syserr_cb)
555 syserr_cb (msg); 1119 syserr_cb (msg);
556 else 1120 else
557 { 1121 {
558#if EV_AVOID_STDIO 1122#if EV_AVOID_STDIO
559 const char *err = strerror (errno);
560
561 ev_printerr (msg); 1123 ev_printerr (msg);
562 ev_printerr (": "); 1124 ev_printerr (": ");
563 ev_printerr (err); 1125 ev_printerr (strerror (errno));
564 ev_printerr ("\n"); 1126 ev_printerr ("\n");
565#else 1127#else
566 perror (msg); 1128 perror (msg);
567#endif 1129#endif
568 abort (); 1130 abort ();
… …
588#endif 1150#endif
589} 1151}
590 1152
591static void *(*alloc)(void *ptr, long size) = ev_realloc_emul; 1153static void *(*alloc)(void *ptr, long size) = ev_realloc_emul;
592 1154
593void 1155void ecb_cold
594ev_set_allocator (void *(*cb)(void *ptr, long size)) 1156ev_set_allocator (void *(*cb)(void *ptr, long size))
595{ 1157{
596 alloc = cb; 1158 alloc = cb;
597} 1159}
598 1160
… …
602 ptr = alloc (ptr, size); 1164 ptr = alloc (ptr, size);
603 1165
604 if (!ptr && size) 1166 if (!ptr && size)
605 { 1167 {
606#if EV_AVOID_STDIO 1168#if EV_AVOID_STDIO
607 ev_printerr ("libev: memory allocation failed, aborting.\n"); 1169 ev_printerr ("(libev) memory allocation failed, aborting.\n");
608#else 1170#else
609 fprintf (stderr, "libev: cannot allocate %ld bytes, aborting.", size); 1171 fprintf (stderr, "(libev) cannot allocate %ld bytes, aborting.", size);
610#endif 1172#endif
611 abort (); 1173 abort ();
612 } 1174 }
613 1175
614 return ptr; 1176 return ptr;
… …
631 unsigned char emask; /* the epoll backend stores the actual kernel mask in here */ 1193 unsigned char emask; /* the epoll backend stores the actual kernel mask in here */
632 unsigned char unused; 1194 unsigned char unused;
633#if EV_USE_EPOLL 1195#if EV_USE_EPOLL
634 unsigned int egen; /* generation counter to counter epoll bugs */ 1196 unsigned int egen; /* generation counter to counter epoll bugs */
635#endif 1197#endif
636#if EV_SELECT_IS_WINSOCKET 1198#if EV_SELECT_IS_WINSOCKET || EV_USE_IOCP
637 SOCKET handle; 1199 SOCKET handle;
1200#endif
1201#if EV_USE_IOCP
1202 OVERLAPPED or, ow;
638#endif 1203#endif
639} ANFD; 1204} ANFD;
640 1205
641/* stores the pending event set for a given watcher */ 1206/* stores the pending event set for a given watcher */
642typedef struct 1207typedef struct
… …
684 #undef VAR 1249 #undef VAR
685 }; 1250 };
686 #include "ev_wrap.h" 1251 #include "ev_wrap.h"
687 1252
688 static struct ev_loop default_loop_struct; 1253 static struct ev_loop default_loop_struct;
689 struct ev_loop *ev_default_loop_ptr; 1254 EV_API_DECL struct ev_loop *ev_default_loop_ptr = 0; /* needs to be initialised to make it a definition despite extern */
690 1255
691#else 1256#else
692 1257
693 ev_tstamp ev_rt_now; 1258 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; 1259 #define VAR(name,decl) static decl;
695 #include "ev_vars.h" 1260 #include "ev_vars.h"
696 #undef VAR 1261 #undef VAR
697 1262
698 static int ev_default_loop_ptr; 1263 static int ev_default_loop_ptr;
… …
707# define EV_RELEASE_CB (void)0 1272# define EV_RELEASE_CB (void)0
708# define EV_ACQUIRE_CB (void)0 1273# define EV_ACQUIRE_CB (void)0
709# define EV_INVOKE_PENDING ev_invoke_pending (EV_A) 1274# define EV_INVOKE_PENDING ev_invoke_pending (EV_A)
710#endif 1275#endif
711 1276
712#define EVUNLOOP_RECURSE 0x80 1277#define EVBREAK_RECURSE 0x80
713 1278
714/*****************************************************************************/ 1279/*****************************************************************************/
715 1280
716#ifndef EV_HAVE_EV_TIME 1281#ifndef EV_HAVE_EV_TIME
717ev_tstamp 1282ev_tstamp
… …
761 if (delay > 0.) 1326 if (delay > 0.)
762 { 1327 {
763#if EV_USE_NANOSLEEP 1328#if EV_USE_NANOSLEEP
764 struct timespec ts; 1329 struct timespec ts;
765 1330
766 ts.tv_sec = (time_t)delay; 1331 EV_TS_SET (ts, delay);
767 ts.tv_nsec = (long)((delay - (ev_tstamp)(ts.tv_sec)) * 1e9);
768
769 nanosleep (&ts, 0); 1332 nanosleep (&ts, 0);
770#elif defined(_WIN32) 1333#elif defined(_WIN32)
771 Sleep ((unsigned long)(delay * 1e3)); 1334 Sleep ((unsigned long)(delay * 1e3));
772#else 1335#else
773 struct timeval tv; 1336 struct timeval tv;
774 1337
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 */ 1338 /* here we rely on sys/time.h + sys/types.h + unistd.h providing select */
779 /* something not guaranteed by newer posix versions, but guaranteed */ 1339 /* something not guaranteed by newer posix versions, but guaranteed */
780 /* by older ones */ 1340 /* by older ones */
1341 EV_TV_SET (tv, delay);
781 select (0, 0, 0, 0, &tv); 1342 select (0, 0, 0, 0, &tv);
782#endif 1343#endif
783 } 1344 }
784} 1345}
785 1346
786/*****************************************************************************/ 1347/*****************************************************************************/
787 1348
788#define MALLOC_ROUND 4096 /* prefer to allocate in chunks of this size, must be 2**n and >> 4 longs */ 1349#define MALLOC_ROUND 4096 /* prefer to allocate in chunks of this size, must be 2**n and >> 4 longs */
789 1350
790/* find a suitable new size for the given array, */ 1351/* find a suitable new size for the given array, */
791/* hopefully by rounding to a ncie-to-malloc size */ 1352/* hopefully by rounding to a nice-to-malloc size */
792inline_size int 1353inline_size int
793array_nextsize (int elem, int cur, int cnt) 1354array_nextsize (int elem, int cur, int cnt)
794{ 1355{
795 int ncur = cur + 1; 1356 int ncur = cur + 1;
796 1357
797 do 1358 do
798 ncur <<= 1; 1359 ncur <<= 1;
799 while (cnt > ncur); 1360 while (cnt > ncur);
800 1361
801 /* if size is large, round to MALLOC_ROUND - 4 * longs to accomodate malloc overhead */ 1362 /* if size is large, round to MALLOC_ROUND - 4 * longs to accommodate malloc overhead */
802 if (elem * ncur > MALLOC_ROUND - sizeof (void *) * 4) 1363 if (elem * ncur > MALLOC_ROUND - sizeof (void *) * 4)
803 { 1364 {
804 ncur *= elem; 1365 ncur *= elem;
805 ncur = (ncur + elem + (MALLOC_ROUND - 1) + sizeof (void *) * 4) & ~(MALLOC_ROUND - 1); 1366 ncur = (ncur + elem + (MALLOC_ROUND - 1) + sizeof (void *) * 4) & ~(MALLOC_ROUND - 1);
806 ncur = ncur - sizeof (void *) * 4; 1367 ncur = ncur - sizeof (void *) * 4;
… …
808 } 1369 }
809 1370
810 return ncur; 1371 return ncur;
811} 1372}
812 1373
813static noinline void * 1374static void * noinline ecb_cold
814array_realloc (int elem, void *base, int *cur, int cnt) 1375array_realloc (int elem, void *base, int *cur, int cnt)
815{ 1376{
816 *cur = array_nextsize (elem, *cur, cnt); 1377 *cur = array_nextsize (elem, *cur, cnt);
817 return ev_realloc (base, elem * *cur); 1378 return ev_realloc (base, elem * *cur);
818} 1379}
… …
821 memset ((void *)(base), 0, sizeof (*(base)) * (count)) 1382 memset ((void *)(base), 0, sizeof (*(base)) * (count))
822 1383
823#define array_needsize(type,base,cur,cnt,init) \ 1384#define array_needsize(type,base,cur,cnt,init) \
824 if (expect_false ((cnt) > (cur))) \ 1385 if (expect_false ((cnt) > (cur))) \
825 { \ 1386 { \
826 int ocur_ = (cur); \ 1387 int ecb_unused ocur_ = (cur); \
827 (base) = (type *)array_realloc \ 1388 (base) = (type *)array_realloc \
828 (sizeof (type), (base), &(cur), (cnt)); \ 1389 (sizeof (type), (base), &(cur), (cnt)); \
829 init ((base) + (ocur_), (cur) - ocur_); \ 1390 init ((base) + (ocur_), (cur) - ocur_); \
830 } 1391 }
831 1392
… …
931inline_size void 1492inline_size void
932fd_reify (EV_P) 1493fd_reify (EV_P)
933{ 1494{
934 int i; 1495 int i;
935 1496
1497#if EV_SELECT_IS_WINSOCKET || EV_USE_IOCP
1498 for (i = 0; i < fdchangecnt; ++i)
1499 {
1500 int fd = fdchanges [i];
1501 ANFD *anfd = anfds + fd;
1502
1503 if (anfd->reify & EV__IOFDSET && anfd->head)
1504 {
1505 SOCKET handle = EV_FD_TO_WIN32_HANDLE (fd);
1506
1507 if (handle != anfd->handle)
1508 {
1509 unsigned long arg;
1510
1511 assert (("libev: only socket fds supported in this configuration", ioctlsocket (handle, FIONREAD, &arg) == 0));
1512
1513 /* handle changed, but fd didn't - we need to do it in two steps */
1514 backend_modify (EV_A_ fd, anfd->events, 0);
1515 anfd->events = 0;
1516 anfd->handle = handle;
1517 }
1518 }
1519 }
1520#endif
1521
936 for (i = 0; i < fdchangecnt; ++i) 1522 for (i = 0; i < fdchangecnt; ++i)
937 { 1523 {
938 int fd = fdchanges [i]; 1524 int fd = fdchanges [i];
939 ANFD *anfd = anfds + fd; 1525 ANFD *anfd = anfds + fd;
940 ev_io *w; 1526 ev_io *w;
941 1527
942 unsigned char events = 0; 1528 unsigned char o_events = anfd->events;
1529 unsigned char o_reify = anfd->reify;
943 1530
944 for (w = (ev_io *)anfd->head; w; w = (ev_io *)((WL)w)->next) 1531 anfd->reify = 0;
945 events |= (unsigned char)w->events;
946 1532
947#if EV_SELECT_IS_WINSOCKET 1533 /*if (expect_true (o_reify & EV_ANFD_REIFY)) probably a deoptimisation */
948 if (events)
949 { 1534 {
950 unsigned long arg; 1535 anfd->events = 0;
951 anfd->handle = EV_FD_TO_WIN32_HANDLE (fd); 1536
952 assert (("libev: only socket fds supported in this configuration", ioctlsocket (anfd->handle, FIONREAD, &arg) == 0)); 1537 for (w = (ev_io *)anfd->head; w; w = (ev_io *)((WL)w)->next)
1538 anfd->events |= (unsigned char)w->events;
1539
1540 if (o_events != anfd->events)
1541 o_reify = EV__IOFDSET; /* actually |= */
953 } 1542 }
954#endif
955 1543
956 { 1544 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); 1545 backend_modify (EV_A_ fd, o_events, anfd->events);
965 }
966 } 1546 }
967 1547
968 fdchangecnt = 0; 1548 fdchangecnt = 0;
969} 1549}
970 1550
… …
982 fdchanges [fdchangecnt - 1] = fd; 1562 fdchanges [fdchangecnt - 1] = fd;
983 } 1563 }
984} 1564}
985 1565
986/* the given fd is invalid/unusable, so make sure it doesn't hurt us anymore */ 1566/* the given fd is invalid/unusable, so make sure it doesn't hurt us anymore */
987inline_speed void 1567inline_speed void ecb_cold
988fd_kill (EV_P_ int fd) 1568fd_kill (EV_P_ int fd)
989{ 1569{
990 ev_io *w; 1570 ev_io *w;
991 1571
992 while ((w = (ev_io *)anfds [fd].head)) 1572 while ((w = (ev_io *)anfds [fd].head))
… …
995 ev_feed_event (EV_A_ (W)w, EV_ERROR | EV_READ | EV_WRITE); 1575 ev_feed_event (EV_A_ (W)w, EV_ERROR | EV_READ | EV_WRITE);
996 } 1576 }
997} 1577}
998 1578
999/* check whether the given fd is actually valid, for error recovery */ 1579/* check whether the given fd is actually valid, for error recovery */
1000inline_size int 1580inline_size int ecb_cold
1001fd_valid (int fd) 1581fd_valid (int fd)
1002{ 1582{
1003#ifdef _WIN32 1583#ifdef _WIN32
1004 return EV_FD_TO_WIN32_HANDLE (fd) != -1; 1584 return EV_FD_TO_WIN32_HANDLE (fd) != -1;
1005#else 1585#else
1006 return fcntl (fd, F_GETFD) != -1; 1586 return fcntl (fd, F_GETFD) != -1;
1007#endif 1587#endif
1008} 1588}
1009 1589
1010/* called on EBADF to verify fds */ 1590/* called on EBADF to verify fds */
1011static void noinline 1591static void noinline ecb_cold
1012fd_ebadf (EV_P) 1592fd_ebadf (EV_P)
1013{ 1593{
1014 int fd; 1594 int fd;
1015 1595
1016 for (fd = 0; fd < anfdmax; ++fd) 1596 for (fd = 0; fd < anfdmax; ++fd)
… …
1018 if (!fd_valid (fd) && errno == EBADF) 1598 if (!fd_valid (fd) && errno == EBADF)
1019 fd_kill (EV_A_ fd); 1599 fd_kill (EV_A_ fd);
1020} 1600}
1021 1601
1022/* called on ENOMEM in select/poll to kill some fds and retry */ 1602/* called on ENOMEM in select/poll to kill some fds and retry */
1023static void noinline 1603static void noinline ecb_cold
1024fd_enomem (EV_P) 1604fd_enomem (EV_P)
1025{ 1605{
1026 int fd; 1606 int fd;
1027 1607
1028 for (fd = anfdmax; fd--; ) 1608 for (fd = anfdmax; fd--; )
… …
1063} 1643}
1064 1644
1065/*****************************************************************************/ 1645/*****************************************************************************/
1066 1646
1067/* 1647/*
1068 * the heap functions want a real array index. array index 0 uis guaranteed to not 1648 * 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 1649 * be in-use at any time. the first heap entry is at array [HEAP0]. DHEAP gives
1070 * the branching factor of the d-tree. 1650 * the branching factor of the d-tree.
1071 */ 1651 */
1072 1652
1073/* 1653/*
… …
1223 1803
1224/*****************************************************************************/ 1804/*****************************************************************************/
1225 1805
1226#if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE 1806#if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE
1227 1807
1228static void noinline 1808static void noinline ecb_cold
1229evpipe_init (EV_P) 1809evpipe_init (EV_P)
1230{ 1810{
1231 if (!ev_is_active (&pipe_w)) 1811 if (!ev_is_active (&pipe_w))
1232 { 1812 {
1233# if EV_USE_EVENTFD 1813# if EV_USE_EVENTFD
… …
1255 ev_io_start (EV_A_ &pipe_w); 1835 ev_io_start (EV_A_ &pipe_w);
1256 ev_unref (EV_A); /* watcher should not keep loop alive */ 1836 ev_unref (EV_A); /* watcher should not keep loop alive */
1257 } 1837 }
1258} 1838}
1259 1839
1260inline_size void 1840inline_speed void
1261evpipe_write (EV_P_ EV_ATOMIC_T *flag) 1841evpipe_write (EV_P_ EV_ATOMIC_T *flag)
1262{ 1842{
1263 if (!*flag) 1843 if (expect_true (*flag))
1844 return;
1845
1846 *flag = 1;
1847
1848 ECB_MEMORY_FENCE_RELEASE; /* make sure flag is visible before the wakeup */
1849
1850 pipe_write_skipped = 1;
1851
1852 ECB_MEMORY_FENCE; /* make sure pipe_write_skipped is visible before we check pipe_write_wanted */
1853
1854 if (pipe_write_wanted)
1264 { 1855 {
1856 int old_errno;
1857
1858 pipe_write_skipped = 0; /* just an optimisation, no fence needed */
1859
1265 int old_errno = errno; /* save errno because write might clobber it */ 1860 old_errno = errno; /* save errno because write will clobber it */
1266 char dummy;
1267
1268 *flag = 1;
1269 1861
1270#if EV_USE_EVENTFD 1862#if EV_USE_EVENTFD
1271 if (evfd >= 0) 1863 if (evfd >= 0)
1272 { 1864 {
1273 uint64_t counter = 1; 1865 uint64_t counter = 1;
1274 write (evfd, &counter, sizeof (uint64_t)); 1866 write (evfd, &counter, sizeof (uint64_t));
1275 } 1867 }
1276 else 1868 else
1277#endif 1869#endif
1870 {
1871 /* win32 people keep sending patches that change this write() to send() */
1872 /* and then run away. but send() is wrong, it wants a socket handle on win32 */
1873 /* so when you think this write should be a send instead, please find out */
1874 /* where your send() is from - it's definitely not the microsoft send, and */
1875 /* tell me. thank you. */
1876 /* it might be that your problem is that your environment needs EV_USE_WSASOCKET */
1877 /* check the ev documentation on how to use this flag */
1278 write (evpipe [1], &dummy, 1); 1878 write (evpipe [1], &(evpipe [1]), 1);
1879 }
1279 1880
1280 errno = old_errno; 1881 errno = old_errno;
1281 } 1882 }
1282} 1883}
1283 1884
… …
1286static void 1887static void
1287pipecb (EV_P_ ev_io *iow, int revents) 1888pipecb (EV_P_ ev_io *iow, int revents)
1288{ 1889{
1289 int i; 1890 int i;
1290 1891
1892 if (revents & EV_READ)
1893 {
1291#if EV_USE_EVENTFD 1894#if EV_USE_EVENTFD
1292 if (evfd >= 0) 1895 if (evfd >= 0)
1293 { 1896 {
1294 uint64_t counter; 1897 uint64_t counter;
1295 read (evfd, &counter, sizeof (uint64_t)); 1898 read (evfd, &counter, sizeof (uint64_t));
1296 } 1899 }
1297 else 1900 else
1298#endif 1901#endif
1299 { 1902 {
1300 char dummy; 1903 char dummy;
1904 /* see discussion in evpipe_write when you think this read should be recv in win32 */
1301 read (evpipe [0], &dummy, 1); 1905 read (evpipe [0], &dummy, 1);
1906 }
1302 } 1907 }
1303 1908
1909 pipe_write_skipped = 0;
1910
1911#if EV_SIGNAL_ENABLE
1304 if (sig_pending) 1912 if (sig_pending)
1305 { 1913 {
1306 sig_pending = 0; 1914 sig_pending = 0;
1307 1915
1308 for (i = EV_NSIG - 1; i--; ) 1916 for (i = EV_NSIG - 1; i--; )
1309 if (expect_false (signals [i].pending)) 1917 if (expect_false (signals [i].pending))
1310 ev_feed_signal_event (EV_A_ i + 1); 1918 ev_feed_signal_event (EV_A_ i + 1);
1311 } 1919 }
1920#endif
1312 1921
1313#if EV_ASYNC_ENABLE 1922#if EV_ASYNC_ENABLE
1314 if (async_pending) 1923 if (async_pending)
1315 { 1924 {
1316 async_pending = 0; 1925 async_pending = 0;
… …
1325#endif 1934#endif
1326} 1935}
1327 1936
1328/*****************************************************************************/ 1937/*****************************************************************************/
1329 1938
1939void
1940ev_feed_signal (int signum)
1941{
1942#if EV_MULTIPLICITY
1943 EV_P = signals [signum - 1].loop;
1944
1945 if (!EV_A)
1946 return;
1947#endif
1948
1949 if (!ev_active (&pipe_w))
1950 return;
1951
1952 signals [signum - 1].pending = 1;
1953 evpipe_write (EV_A_ &sig_pending);
1954}
1955
1330static void 1956static void
1331ev_sighandler (int signum) 1957ev_sighandler (int signum)
1332{ 1958{
1333#if EV_MULTIPLICITY
1334 EV_P = signals [signum - 1].loop;
1335#endif
1336
1337#ifdef _WIN32 1959#ifdef _WIN32
1338 signal (signum, ev_sighandler); 1960 signal (signum, ev_sighandler);
1339#endif 1961#endif
1340 1962
1341 signals [signum - 1].pending = 1; 1963 ev_feed_signal (signum);
1342 evpipe_write (EV_A_ &sig_pending);
1343} 1964}
1344 1965
1345void noinline 1966void noinline
1346ev_feed_signal_event (EV_P_ int signum) 1967ev_feed_signal_event (EV_P_ int signum)
1347{ 1968{
… …
1447 2068
1448#endif 2069#endif
1449 2070
1450/*****************************************************************************/ 2071/*****************************************************************************/
1451 2072
2073#if EV_USE_IOCP
2074# include "ev_iocp.c"
2075#endif
1452#if EV_USE_PORT 2076#if EV_USE_PORT
1453# include "ev_port.c" 2077# include "ev_port.c"
1454#endif 2078#endif
1455#if EV_USE_KQUEUE 2079#if EV_USE_KQUEUE
1456# include "ev_kqueue.c" 2080# include "ev_kqueue.c"
… …
1463#endif 2087#endif
1464#if EV_USE_SELECT 2088#if EV_USE_SELECT
1465# include "ev_select.c" 2089# include "ev_select.c"
1466#endif 2090#endif
1467 2091
1468int 2092int ecb_cold
1469ev_version_major (void) 2093ev_version_major (void)
1470{ 2094{
1471 return EV_VERSION_MAJOR; 2095 return EV_VERSION_MAJOR;
1472} 2096}
1473 2097
1474int 2098int ecb_cold
1475ev_version_minor (void) 2099ev_version_minor (void)
1476{ 2100{
1477 return EV_VERSION_MINOR; 2101 return EV_VERSION_MINOR;
1478} 2102}
1479 2103
1480/* return true if we are running with elevated privileges and should ignore env variables */ 2104/* return true if we are running with elevated privileges and should ignore env variables */
1481int inline_size 2105int inline_size ecb_cold
1482enable_secure (void) 2106enable_secure (void)
1483{ 2107{
1484#ifdef _WIN32 2108#ifdef _WIN32
1485 return 0; 2109 return 0;
1486#else 2110#else
1487 return getuid () != geteuid () 2111 return getuid () != geteuid ()
1488 || getgid () != getegid (); 2112 || getgid () != getegid ();
1489#endif 2113#endif
1490} 2114}
1491 2115
1492unsigned int 2116unsigned int ecb_cold
1493ev_supported_backends (void) 2117ev_supported_backends (void)
1494{ 2118{
1495 unsigned int flags = 0; 2119 unsigned int flags = 0;
1496 2120
1497 if (EV_USE_PORT ) flags |= EVBACKEND_PORT; 2121 if (EV_USE_PORT ) flags |= EVBACKEND_PORT;
… …
1501 if (EV_USE_SELECT) flags |= EVBACKEND_SELECT; 2125 if (EV_USE_SELECT) flags |= EVBACKEND_SELECT;
1502 2126
1503 return flags; 2127 return flags;
1504} 2128}
1505 2129
1506unsigned int 2130unsigned int ecb_cold
1507ev_recommended_backends (void) 2131ev_recommended_backends (void)
1508{ 2132{
1509 unsigned int flags = ev_supported_backends (); 2133 unsigned int flags = ev_supported_backends ();
1510 2134
1511#ifndef __NetBSD__ 2135#ifndef __NetBSD__
… …
1523#endif 2147#endif
1524 2148
1525 return flags; 2149 return flags;
1526} 2150}
1527 2151
1528unsigned int 2152unsigned int ecb_cold
1529ev_embeddable_backends (void) 2153ev_embeddable_backends (void)
1530{ 2154{
1531 int flags = EVBACKEND_EPOLL | EVBACKEND_KQUEUE | EVBACKEND_PORT; 2155 int flags = EVBACKEND_EPOLL | EVBACKEND_KQUEUE | EVBACKEND_PORT;
1532 2156
1533 /* epoll embeddability broken on all linux versions up to at least 2.6.23 */ 2157 /* 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 */ 2158 if (ev_linux_version () < 0x020620) /* disable it on linux < 2.6.32 */
1535 flags &= ~EVBACKEND_EPOLL; 2159 flags &= ~EVBACKEND_EPOLL;
1536 2160
1537 return flags; 2161 return flags;
1538} 2162}
1539 2163
1540unsigned int 2164unsigned int
… …
1578ev_userdata (EV_P) 2202ev_userdata (EV_P)
1579{ 2203{
1580 return userdata; 2204 return userdata;
1581} 2205}
1582 2206
2207void
1583void ev_set_invoke_pending_cb (EV_P_ void (*invoke_pending_cb)(EV_P)) 2208ev_set_invoke_pending_cb (EV_P_ void (*invoke_pending_cb)(EV_P))
1584{ 2209{
1585 invoke_cb = invoke_pending_cb; 2210 invoke_cb = invoke_pending_cb;
1586} 2211}
1587 2212
2213void
1588void ev_set_loop_release_cb (EV_P_ void (*release)(EV_P), void (*acquire)(EV_P)) 2214ev_set_loop_release_cb (EV_P_ void (*release)(EV_P), void (*acquire)(EV_P))
1589{ 2215{
1590 release_cb = release; 2216 release_cb = release;
1591 acquire_cb = acquire; 2217 acquire_cb = acquire;
1592} 2218}
1593#endif 2219#endif
1594 2220
1595/* initialise a loop structure, must be zero-initialised */ 2221/* initialise a loop structure, must be zero-initialised */
1596static void noinline 2222static void noinline ecb_cold
1597loop_init (EV_P_ unsigned int flags) 2223loop_init (EV_P_ unsigned int flags)
1598{ 2224{
1599 if (!backend) 2225 if (!backend)
1600 { 2226 {
2227 origflags = flags;
2228
1601#if EV_USE_REALTIME 2229#if EV_USE_REALTIME
1602 if (!have_realtime) 2230 if (!have_realtime)
1603 { 2231 {
1604 struct timespec ts; 2232 struct timespec ts;
1605 2233
… …
1627 if (!(flags & EVFLAG_NOENV) 2255 if (!(flags & EVFLAG_NOENV)
1628 && !enable_secure () 2256 && !enable_secure ()
1629 && getenv ("LIBEV_FLAGS")) 2257 && getenv ("LIBEV_FLAGS"))
1630 flags = atoi (getenv ("LIBEV_FLAGS")); 2258 flags = atoi (getenv ("LIBEV_FLAGS"));
1631 2259
1632 ev_rt_now = ev_time (); 2260 ev_rt_now = ev_time ();
1633 mn_now = get_clock (); 2261 mn_now = get_clock ();
1634 now_floor = mn_now; 2262 now_floor = mn_now;
1635 rtmn_diff = ev_rt_now - mn_now; 2263 rtmn_diff = ev_rt_now - mn_now;
1636#if EV_FEATURE_API 2264#if EV_FEATURE_API
1637 invoke_cb = ev_invoke_pending; 2265 invoke_cb = ev_invoke_pending;
1638#endif 2266#endif
1639 2267
1640 io_blocktime = 0.; 2268 io_blocktime = 0.;
1641 timeout_blocktime = 0.; 2269 timeout_blocktime = 0.;
1642 backend = 0; 2270 backend = 0;
1643 backend_fd = -1; 2271 backend_fd = -1;
1644 sig_pending = 0; 2272 sig_pending = 0;
1645#if EV_ASYNC_ENABLE 2273#if EV_ASYNC_ENABLE
1646 async_pending = 0; 2274 async_pending = 0;
1647#endif 2275#endif
2276 pipe_write_skipped = 0;
2277 pipe_write_wanted = 0;
1648#if EV_USE_INOTIFY 2278#if EV_USE_INOTIFY
1649 fs_fd = flags & EVFLAG_NOINOTIFY ? -1 : -2; 2279 fs_fd = flags & EVFLAG_NOINOTIFY ? -1 : -2;
1650#endif 2280#endif
1651#if EV_USE_SIGNALFD 2281#if EV_USE_SIGNALFD
1652 sigfd = flags & EVFLAG_SIGNALFD ? -2 : -1; 2282 sigfd = flags & EVFLAG_SIGNALFD ? -2 : -1;
1653#endif 2283#endif
1654 2284
1655 if (!(flags & 0x0000ffffU)) 2285 if (!(flags & EVBACKEND_MASK))
1656 flags |= ev_recommended_backends (); 2286 flags |= ev_recommended_backends ();
1657 2287
2288#if EV_USE_IOCP
2289 if (!backend && (flags & EVBACKEND_IOCP )) backend = iocp_init (EV_A_ flags);
2290#endif
1658#if EV_USE_PORT 2291#if EV_USE_PORT
1659 if (!backend && (flags & EVBACKEND_PORT )) backend = port_init (EV_A_ flags); 2292 if (!backend && (flags & EVBACKEND_PORT )) backend = port_init (EV_A_ flags);
1660#endif 2293#endif
1661#if EV_USE_KQUEUE 2294#if EV_USE_KQUEUE
1662 if (!backend && (flags & EVBACKEND_KQUEUE)) backend = kqueue_init (EV_A_ flags); 2295 if (!backend && (flags & EVBACKEND_KQUEUE)) backend = kqueue_init (EV_A_ flags);
… …
1679#endif 2312#endif
1680 } 2313 }
1681} 2314}
1682 2315
1683/* free up a loop structure */ 2316/* free up a loop structure */
1684static void noinline 2317void ecb_cold
1685loop_destroy (EV_P) 2318ev_loop_destroy (EV_P)
1686{ 2319{
1687 int i; 2320 int i;
2321
2322#if EV_MULTIPLICITY
2323 /* mimic free (0) */
2324 if (!EV_A)
2325 return;
2326#endif
2327
2328#if EV_CLEANUP_ENABLE
2329 /* queue cleanup watchers (and execute them) */
2330 if (expect_false (cleanupcnt))
2331 {
2332 queue_events (EV_A_ (W *)cleanups, cleanupcnt, EV_CLEANUP);
2333 EV_INVOKE_PENDING;
2334 }
2335#endif
2336
2337#if EV_CHILD_ENABLE
2338 if (ev_is_active (&childev))
2339 {
2340 ev_ref (EV_A); /* child watcher */
2341 ev_signal_stop (EV_A_ &childev);
2342 }
2343#endif
1688 2344
1689 if (ev_is_active (&pipe_w)) 2345 if (ev_is_active (&pipe_w))
1690 { 2346 {
1691 /*ev_ref (EV_A);*/ 2347 /*ev_ref (EV_A);*/
1692 /*ev_io_stop (EV_A_ &pipe_w);*/ 2348 /*ev_io_stop (EV_A_ &pipe_w);*/
… …
1714#endif 2370#endif
1715 2371
1716 if (backend_fd >= 0) 2372 if (backend_fd >= 0)
1717 close (backend_fd); 2373 close (backend_fd);
1718 2374
2375#if EV_USE_IOCP
2376 if (backend == EVBACKEND_IOCP ) iocp_destroy (EV_A);
2377#endif
1719#if EV_USE_PORT 2378#if EV_USE_PORT
1720 if (backend == EVBACKEND_PORT ) port_destroy (EV_A); 2379 if (backend == EVBACKEND_PORT ) port_destroy (EV_A);
1721#endif 2380#endif
1722#if EV_USE_KQUEUE 2381#if EV_USE_KQUEUE
1723 if (backend == EVBACKEND_KQUEUE) kqueue_destroy (EV_A); 2382 if (backend == EVBACKEND_KQUEUE) kqueue_destroy (EV_A);
… …
1750 array_free (periodic, EMPTY); 2409 array_free (periodic, EMPTY);
1751#endif 2410#endif
1752#if EV_FORK_ENABLE 2411#if EV_FORK_ENABLE
1753 array_free (fork, EMPTY); 2412 array_free (fork, EMPTY);
1754#endif 2413#endif
2414#if EV_CLEANUP_ENABLE
2415 array_free (cleanup, EMPTY);
2416#endif
1755 array_free (prepare, EMPTY); 2417 array_free (prepare, EMPTY);
1756 array_free (check, EMPTY); 2418 array_free (check, EMPTY);
1757#if EV_ASYNC_ENABLE 2419#if EV_ASYNC_ENABLE
1758 array_free (async, EMPTY); 2420 array_free (async, EMPTY);
1759#endif 2421#endif
1760 2422
1761 backend = 0; 2423 backend = 0;
2424
2425#if EV_MULTIPLICITY
2426 if (ev_is_default_loop (EV_A))
2427#endif
2428 ev_default_loop_ptr = 0;
2429#if EV_MULTIPLICITY
2430 else
2431 ev_free (EV_A);
2432#endif
1762} 2433}
1763 2434
1764#if EV_USE_INOTIFY 2435#if EV_USE_INOTIFY
1765inline_size void infy_fork (EV_P); 2436inline_size void infy_fork (EV_P);
1766#endif 2437#endif
… …
1781 infy_fork (EV_A); 2452 infy_fork (EV_A);
1782#endif 2453#endif
1783 2454
1784 if (ev_is_active (&pipe_w)) 2455 if (ev_is_active (&pipe_w))
1785 { 2456 {
1786 /* this "locks" the handlers against writing to the pipe */ 2457 /* 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 2458
1793 ev_ref (EV_A); 2459 ev_ref (EV_A);
1794 ev_io_stop (EV_A_ &pipe_w); 2460 ev_io_stop (EV_A_ &pipe_w);
1795 2461
1796#if EV_USE_EVENTFD 2462#if EV_USE_EVENTFD
… …
1814 postfork = 0; 2480 postfork = 0;
1815} 2481}
1816 2482
1817#if EV_MULTIPLICITY 2483#if EV_MULTIPLICITY
1818 2484
1819struct ev_loop * 2485struct ev_loop * ecb_cold
1820ev_loop_new (unsigned int flags) 2486ev_loop_new (unsigned int flags)
1821{ 2487{
1822 EV_P = (struct ev_loop *)ev_malloc (sizeof (struct ev_loop)); 2488 EV_P = (struct ev_loop *)ev_malloc (sizeof (struct ev_loop));
1823 2489
1824 memset (EV_A, 0, sizeof (struct ev_loop)); 2490 memset (EV_A, 0, sizeof (struct ev_loop));
1825 loop_init (EV_A_ flags); 2491 loop_init (EV_A_ flags);
1826 2492
1827 if (ev_backend (EV_A)) 2493 if (ev_backend (EV_A))
1828 return EV_A; 2494 return EV_A;
1829 2495
2496 ev_free (EV_A);
1830 return 0; 2497 return 0;
1831} 2498}
1832 2499
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 */ 2500#endif /* multiplicity */
1846 2501
1847#if EV_VERIFY 2502#if EV_VERIFY
1848static void noinline 2503static void noinline ecb_cold
1849verify_watcher (EV_P_ W w) 2504verify_watcher (EV_P_ W w)
1850{ 2505{
1851 assert (("libev: watcher has invalid priority", ABSPRI (w) >= 0 && ABSPRI (w) < NUMPRI)); 2506 assert (("libev: watcher has invalid priority", ABSPRI (w) >= 0 && ABSPRI (w) < NUMPRI));
1852 2507
1853 if (w->pending) 2508 if (w->pending)
1854 assert (("libev: pending watcher not on pending queue", pendings [ABSPRI (w)][w->pending - 1].w == w)); 2509 assert (("libev: pending watcher not on pending queue", pendings [ABSPRI (w)][w->pending - 1].w == w));
1855} 2510}
1856 2511
1857static void noinline 2512static void noinline ecb_cold
1858verify_heap (EV_P_ ANHE *heap, int N) 2513verify_heap (EV_P_ ANHE *heap, int N)
1859{ 2514{
1860 int i; 2515 int i;
1861 2516
1862 for (i = HEAP0; i < N + HEAP0; ++i) 2517 for (i = HEAP0; i < N + HEAP0; ++i)
… …
1867 2522
1868 verify_watcher (EV_A_ (W)ANHE_w (heap [i])); 2523 verify_watcher (EV_A_ (W)ANHE_w (heap [i]));
1869 } 2524 }
1870} 2525}
1871 2526
1872static void noinline 2527static void noinline ecb_cold
1873array_verify (EV_P_ W *ws, int cnt) 2528array_verify (EV_P_ W *ws, int cnt)
1874{ 2529{
1875 while (cnt--) 2530 while (cnt--)
1876 { 2531 {
1877 assert (("libev: active index mismatch", ev_active (ws [cnt]) == cnt + 1)); 2532 assert (("libev: active index mismatch", ev_active (ws [cnt]) == cnt + 1));
… …
1879 } 2534 }
1880} 2535}
1881#endif 2536#endif
1882 2537
1883#if EV_FEATURE_API 2538#if EV_FEATURE_API
1884void 2539void ecb_cold
1885ev_verify (EV_P) 2540ev_verify (EV_P)
1886{ 2541{
1887#if EV_VERIFY 2542#if EV_VERIFY
1888 int i; 2543 int i;
1889 WL w; 2544 WL w;
… …
1924#if EV_FORK_ENABLE 2579#if EV_FORK_ENABLE
1925 assert (forkmax >= forkcnt); 2580 assert (forkmax >= forkcnt);
1926 array_verify (EV_A_ (W *)forks, forkcnt); 2581 array_verify (EV_A_ (W *)forks, forkcnt);
1927#endif 2582#endif
1928 2583
2584#if EV_CLEANUP_ENABLE
2585 assert (cleanupmax >= cleanupcnt);
2586 array_verify (EV_A_ (W *)cleanups, cleanupcnt);
2587#endif
2588
1929#if EV_ASYNC_ENABLE 2589#if EV_ASYNC_ENABLE
1930 assert (asyncmax >= asynccnt); 2590 assert (asyncmax >= asynccnt);
1931 array_verify (EV_A_ (W *)asyncs, asynccnt); 2591 array_verify (EV_A_ (W *)asyncs, asynccnt);
1932#endif 2592#endif
1933 2593
… …
1950#endif 2610#endif
1951} 2611}
1952#endif 2612#endif
1953 2613
1954#if EV_MULTIPLICITY 2614#if EV_MULTIPLICITY
1955struct ev_loop * 2615struct ev_loop * ecb_cold
1956ev_default_loop_init (unsigned int flags)
1957#else 2616#else
1958int 2617int
2618#endif
1959ev_default_loop (unsigned int flags) 2619ev_default_loop (unsigned int flags)
1960#endif
1961{ 2620{
1962 if (!ev_default_loop_ptr) 2621 if (!ev_default_loop_ptr)
1963 { 2622 {
1964#if EV_MULTIPLICITY 2623#if EV_MULTIPLICITY
1965 EV_P = ev_default_loop_ptr = &default_loop_struct; 2624 EV_P = ev_default_loop_ptr = &default_loop_struct;
… …
1984 2643
1985 return ev_default_loop_ptr; 2644 return ev_default_loop_ptr;
1986} 2645}
1987 2646
1988void 2647void
1989ev_default_destroy (void) 2648ev_loop_fork (EV_P)
1990{ 2649{
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 */ 2650 postfork = 1; /* must be in line with ev_default_fork */
2013} 2651}
2014 2652
2015/*****************************************************************************/ 2653/*****************************************************************************/
2016 2654
2017void 2655void
… …
2039 2677
2040 for (pri = NUMPRI; pri--; ) 2678 for (pri = NUMPRI; pri--; )
2041 while (pendingcnt [pri]) 2679 while (pendingcnt [pri])
2042 { 2680 {
2043 ANPENDING *p = pendings [pri] + --pendingcnt [pri]; 2681 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 2682
2048 p->w->pending = 0; 2683 p->w->pending = 0;
2049 EV_CB_INVOKE (p->w, p->events); 2684 EV_CB_INVOKE (p->w, p->events);
2050 EV_FREQUENT_CHECK; 2685 EV_FREQUENT_CHECK;
2051 } 2686 }
… …
2113 feed_reverse_done (EV_A_ EV_TIMER); 2748 feed_reverse_done (EV_A_ EV_TIMER);
2114 } 2749 }
2115} 2750}
2116 2751
2117#if EV_PERIODIC_ENABLE 2752#if EV_PERIODIC_ENABLE
2753
2754static void noinline
2755periodic_recalc (EV_P_ ev_periodic *w)
2756{
2757 ev_tstamp interval = w->interval > MIN_INTERVAL ? w->interval : MIN_INTERVAL;
2758 ev_tstamp at = w->offset + interval * ev_floor ((ev_rt_now - w->offset) / interval);
2759
2760 /* the above almost always errs on the low side */
2761 while (at <= ev_rt_now)
2762 {
2763 ev_tstamp nat = at + w->interval;
2764
2765 /* when resolution fails us, we use ev_rt_now */
2766 if (expect_false (nat == at))
2767 {
2768 at = ev_rt_now;
2769 break;
2770 }
2771
2772 at = nat;
2773 }
2774
2775 ev_at (w) = at;
2776}
2777
2118/* make periodics pending */ 2778/* make periodics pending */
2119inline_size void 2779inline_size void
2120periodics_reify (EV_P) 2780periodics_reify (EV_P)
2121{ 2781{
2122 EV_FREQUENT_CHECK; 2782 EV_FREQUENT_CHECK;
… …
2141 ANHE_at_cache (periodics [HEAP0]); 2801 ANHE_at_cache (periodics [HEAP0]);
2142 downheap (periodics, periodiccnt, HEAP0); 2802 downheap (periodics, periodiccnt, HEAP0);
2143 } 2803 }
2144 else if (w->interval) 2804 else if (w->interval)
2145 { 2805 {
2146 ev_at (w) = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval; 2806 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]); 2807 ANHE_at_cache (periodics [HEAP0]);
2161 downheap (periodics, periodiccnt, HEAP0); 2808 downheap (periodics, periodiccnt, HEAP0);
2162 } 2809 }
2163 else 2810 else
2164 ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */ 2811 ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */
… …
2171 feed_reverse_done (EV_A_ EV_PERIODIC); 2818 feed_reverse_done (EV_A_ EV_PERIODIC);
2172 } 2819 }
2173} 2820}
2174 2821
2175/* simply recalculate all periodics */ 2822/* simply recalculate all periodics */
2176/* TODO: maybe ensure that at leats one event happens when jumping forward? */ 2823/* TODO: maybe ensure that at least one event happens when jumping forward? */
2177static void noinline 2824static void noinline ecb_cold
2178periodics_reschedule (EV_P) 2825periodics_reschedule (EV_P)
2179{ 2826{
2180 int i; 2827 int i;
2181 2828
2182 /* adjust periodics after time jump */ 2829 /* adjust periodics after time jump */
… …
2185 ev_periodic *w = (ev_periodic *)ANHE_w (periodics [i]); 2832 ev_periodic *w = (ev_periodic *)ANHE_w (periodics [i]);
2186 2833
2187 if (w->reschedule_cb) 2834 if (w->reschedule_cb)
2188 ev_at (w) = w->reschedule_cb (w, ev_rt_now); 2835 ev_at (w) = w->reschedule_cb (w, ev_rt_now);
2189 else if (w->interval) 2836 else if (w->interval)
2190 ev_at (w) = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval; 2837 periodic_recalc (EV_A_ w);
2191 2838
2192 ANHE_at_cache (periodics [i]); 2839 ANHE_at_cache (periodics [i]);
2193 } 2840 }
2194 2841
2195 reheap (periodics, periodiccnt); 2842 reheap (periodics, periodiccnt);
2196} 2843}
2197#endif 2844#endif
2198 2845
2199/* adjust all timers by a given offset */ 2846/* adjust all timers by a given offset */
2200static void noinline 2847static void noinline ecb_cold
2201timers_reschedule (EV_P_ ev_tstamp adjust) 2848timers_reschedule (EV_P_ ev_tstamp adjust)
2202{ 2849{
2203 int i; 2850 int i;
2204 2851
2205 for (i = 0; i < timercnt; ++i) 2852 for (i = 0; i < timercnt; ++i)
… …
2242 * doesn't hurt either as we only do this on time-jumps or 2889 * doesn't hurt either as we only do this on time-jumps or
2243 * in the unlikely event of having been preempted here. 2890 * in the unlikely event of having been preempted here.
2244 */ 2891 */
2245 for (i = 4; --i; ) 2892 for (i = 4; --i; )
2246 { 2893 {
2894 ev_tstamp diff;
2247 rtmn_diff = ev_rt_now - mn_now; 2895 rtmn_diff = ev_rt_now - mn_now;
2248 2896
2897 diff = odiff - rtmn_diff;
2898
2249 if (expect_true (fabs (odiff - rtmn_diff) < MIN_TIMEJUMP)) 2899 if (expect_true ((diff < 0. ? -diff : diff) < MIN_TIMEJUMP))
2250 return; /* all is well */ 2900 return; /* all is well */
2251 2901
2252 ev_rt_now = ev_time (); 2902 ev_rt_now = ev_time ();
2253 mn_now = get_clock (); 2903 mn_now = get_clock ();
2254 now_floor = mn_now; 2904 now_floor = mn_now;
… …
2277 mn_now = ev_rt_now; 2927 mn_now = ev_rt_now;
2278 } 2928 }
2279} 2929}
2280 2930
2281void 2931void
2282ev_loop (EV_P_ int flags) 2932ev_run (EV_P_ int flags)
2283{ 2933{
2284#if EV_FEATURE_API 2934#if EV_FEATURE_API
2285 ++loop_depth; 2935 ++loop_depth;
2286#endif 2936#endif
2287 2937
2288 assert (("libev: ev_loop recursion during release detected", loop_done != EVUNLOOP_RECURSE)); 2938 assert (("libev: ev_loop recursion during release detected", loop_done != EVBREAK_RECURSE));
2289 2939
2290 loop_done = EVUNLOOP_CANCEL; 2940 loop_done = EVBREAK_CANCEL;
2291 2941
2292 EV_INVOKE_PENDING; /* in case we recurse, ensure ordering stays nice and clean */ 2942 EV_INVOKE_PENDING; /* in case we recurse, ensure ordering stays nice and clean */
2293 2943
2294 do 2944 do
2295 { 2945 {
… …
2338 /* calculate blocking time */ 2988 /* calculate blocking time */
2339 { 2989 {
2340 ev_tstamp waittime = 0.; 2990 ev_tstamp waittime = 0.;
2341 ev_tstamp sleeptime = 0.; 2991 ev_tstamp sleeptime = 0.;
2342 2992
2993 /* remember old timestamp for io_blocktime calculation */
2994 ev_tstamp prev_mn_now = mn_now;
2995
2996 /* update time to cancel out callback processing overhead */
2997 time_update (EV_A_ 1e100);
2998
2999 /* from now on, we want a pipe-wake-up */
3000 pipe_write_wanted = 1;
3001
3002 ECB_MEMORY_FENCE; /* make sure pipe_write_wanted is visible before we check for potential skips */
3003
2343 if (expect_true (!(flags & EVLOOP_NONBLOCK || idleall || !activecnt))) 3004 if (expect_true (!(flags & EVRUN_NOWAIT || idleall || !activecnt || pipe_write_skipped)))
2344 { 3005 {
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; 3006 waittime = MAX_BLOCKTIME;
2352 3007
2353 if (timercnt) 3008 if (timercnt)
2354 { 3009 {
2355 ev_tstamp to = ANHE_at (timers [HEAP0]) - mn_now + backend_fudge; 3010 ev_tstamp to = ANHE_at (timers [HEAP0]) - mn_now;
2356 if (waittime > to) waittime = to; 3011 if (waittime > to) waittime = to;
2357 } 3012 }
2358 3013
2359#if EV_PERIODIC_ENABLE 3014#if EV_PERIODIC_ENABLE
2360 if (periodiccnt) 3015 if (periodiccnt)
2361 { 3016 {
2362 ev_tstamp to = ANHE_at (periodics [HEAP0]) - ev_rt_now + backend_fudge; 3017 ev_tstamp to = ANHE_at (periodics [HEAP0]) - ev_rt_now;
2363 if (waittime > to) waittime = to; 3018 if (waittime > to) waittime = to;
2364 } 3019 }
2365#endif 3020#endif
2366 3021
2367 /* don't let timeouts decrease the waittime below timeout_blocktime */ 3022 /* don't let timeouts decrease the waittime below timeout_blocktime */
2368 if (expect_false (waittime < timeout_blocktime)) 3023 if (expect_false (waittime < timeout_blocktime))
2369 waittime = timeout_blocktime; 3024 waittime = timeout_blocktime;
3025
3026 /* at this point, we NEED to wait, so we have to ensure */
3027 /* to pass a minimum nonzero value to the backend */
3028 if (expect_false (waittime < backend_mintime))
3029 waittime = backend_mintime;
2370 3030
2371 /* extra check because io_blocktime is commonly 0 */ 3031 /* extra check because io_blocktime is commonly 0 */
2372 if (expect_false (io_blocktime)) 3032 if (expect_false (io_blocktime))
2373 { 3033 {
2374 sleeptime = io_blocktime - (mn_now - prev_mn_now); 3034 sleeptime = io_blocktime - (mn_now - prev_mn_now);
2375 3035
2376 if (sleeptime > waittime - backend_fudge) 3036 if (sleeptime > waittime - backend_mintime)
2377 sleeptime = waittime - backend_fudge; 3037 sleeptime = waittime - backend_mintime;
2378 3038
2379 if (expect_true (sleeptime > 0.)) 3039 if (expect_true (sleeptime > 0.))
2380 { 3040 {
2381 ev_sleep (sleeptime); 3041 ev_sleep (sleeptime);
2382 waittime -= sleeptime; 3042 waittime -= sleeptime;
… …
2385 } 3045 }
2386 3046
2387#if EV_FEATURE_API 3047#if EV_FEATURE_API
2388 ++loop_count; 3048 ++loop_count;
2389#endif 3049#endif
2390 assert ((loop_done = EVUNLOOP_RECURSE, 1)); /* assert for side effect */ 3050 assert ((loop_done = EVBREAK_RECURSE, 1)); /* assert for side effect */
2391 backend_poll (EV_A_ waittime); 3051 backend_poll (EV_A_ waittime);
2392 assert ((loop_done = EVUNLOOP_CANCEL, 1)); /* assert for side effect */ 3052 assert ((loop_done = EVBREAK_CANCEL, 1)); /* assert for side effect */
3053
3054 pipe_write_wanted = 0; /* just an optimisation, no fence needed */
3055
3056 if (pipe_write_skipped)
3057 {
3058 assert (("libev: pipe_w not active, but pipe not written", ev_is_active (&pipe_w)));
3059 ev_feed_event (EV_A_ &pipe_w, EV_CUSTOM);
3060 }
3061
2393 3062
2394 /* update ev_rt_now, do magic */ 3063 /* update ev_rt_now, do magic */
2395 time_update (EV_A_ waittime + sleeptime); 3064 time_update (EV_A_ waittime + sleeptime);
2396 } 3065 }
2397 3066
… …
2415 EV_INVOKE_PENDING; 3084 EV_INVOKE_PENDING;
2416 } 3085 }
2417 while (expect_true ( 3086 while (expect_true (
2418 activecnt 3087 activecnt
2419 && !loop_done 3088 && !loop_done
2420 && !(flags & (EVLOOP_ONESHOT | EVLOOP_NONBLOCK)) 3089 && !(flags & (EVRUN_ONCE | EVRUN_NOWAIT))
2421 )); 3090 ));
2422 3091
2423 if (loop_done == EVUNLOOP_ONE) 3092 if (loop_done == EVBREAK_ONE)
2424 loop_done = EVUNLOOP_CANCEL; 3093 loop_done = EVBREAK_CANCEL;
2425 3094
2426#if EV_FEATURE_API 3095#if EV_FEATURE_API
2427 --loop_depth; 3096 --loop_depth;
2428#endif 3097#endif
2429} 3098}
2430 3099
2431void 3100void
2432ev_unloop (EV_P_ int how) 3101ev_break (EV_P_ int how)
2433{ 3102{
2434 loop_done = how; 3103 loop_done = how;
2435} 3104}
2436 3105
2437void 3106void
… …
2585 EV_FREQUENT_CHECK; 3254 EV_FREQUENT_CHECK;
2586 3255
2587 wlist_del (&anfds[w->fd].head, (WL)w); 3256 wlist_del (&anfds[w->fd].head, (WL)w);
2588 ev_stop (EV_A_ (W)w); 3257 ev_stop (EV_A_ (W)w);
2589 3258
2590 fd_change (EV_A_ w->fd, 1); 3259 fd_change (EV_A_ w->fd, EV_ANFD_REIFY);
2591 3260
2592 EV_FREQUENT_CHECK; 3261 EV_FREQUENT_CHECK;
2593} 3262}
2594 3263
2595void noinline 3264void noinline
… …
2648 3317
2649void noinline 3318void noinline
2650ev_timer_again (EV_P_ ev_timer *w) 3319ev_timer_again (EV_P_ ev_timer *w)
2651{ 3320{
2652 EV_FREQUENT_CHECK; 3321 EV_FREQUENT_CHECK;
3322
3323 clear_pending (EV_A_ (W)w);
2653 3324
2654 if (ev_is_active (w)) 3325 if (ev_is_active (w))
2655 { 3326 {
2656 if (w->repeat) 3327 if (w->repeat)
2657 { 3328 {
… …
2687 if (w->reschedule_cb) 3358 if (w->reschedule_cb)
2688 ev_at (w) = w->reschedule_cb (w, ev_rt_now); 3359 ev_at (w) = w->reschedule_cb (w, ev_rt_now);
2689 else if (w->interval) 3360 else if (w->interval)
2690 { 3361 {
2691 assert (("libev: ev_periodic_start called with negative interval value", w->interval >= 0.)); 3362 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 */ 3363 periodic_recalc (EV_A_ w);
2693 ev_at (w) = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval;
2694 } 3364 }
2695 else 3365 else
2696 ev_at (w) = w->offset; 3366 ev_at (w) = w->offset;
2697 3367
2698 EV_FREQUENT_CHECK; 3368 EV_FREQUENT_CHECK;
… …
2819 sa.sa_handler = ev_sighandler; 3489 sa.sa_handler = ev_sighandler;
2820 sigfillset (&sa.sa_mask); 3490 sigfillset (&sa.sa_mask);
2821 sa.sa_flags = SA_RESTART; /* if restarting works we save one iteration */ 3491 sa.sa_flags = SA_RESTART; /* if restarting works we save one iteration */
2822 sigaction (w->signum, &sa, 0); 3492 sigaction (w->signum, &sa, 0);
2823 3493
3494 if (origflags & EVFLAG_NOSIGMASK)
3495 {
2824 sigemptyset (&sa.sa_mask); 3496 sigemptyset (&sa.sa_mask);
2825 sigaddset (&sa.sa_mask, w->signum); 3497 sigaddset (&sa.sa_mask, w->signum);
2826 sigprocmask (SIG_UNBLOCK, &sa.sa_mask, 0); 3498 sigprocmask (SIG_UNBLOCK, &sa.sa_mask, 0);
3499 }
2827#endif 3500#endif
2828 } 3501 }
2829 3502
2830 EV_FREQUENT_CHECK; 3503 EV_FREQUENT_CHECK;
2831} 3504}
… …
2972 if (!pend || pend == path) 3645 if (!pend || pend == path)
2973 break; 3646 break;
2974 3647
2975 *pend = 0; 3648 *pend = 0;
2976 w->wd = inotify_add_watch (fs_fd, path, mask); 3649 w->wd = inotify_add_watch (fs_fd, path, mask);
2977 } 3650 }
2978 while (w->wd < 0 && (errno == ENOENT || errno == EACCES)); 3651 while (w->wd < 0 && (errno == ENOENT || errno == EACCES));
2979 } 3652 }
2980 } 3653 }
2981 3654
2982 if (w->wd >= 0) 3655 if (w->wd >= 0)
… …
3049 infy_wd (EV_A_ ev->wd, ev->wd, ev); 3722 infy_wd (EV_A_ ev->wd, ev->wd, ev);
3050 ofs += sizeof (struct inotify_event) + ev->len; 3723 ofs += sizeof (struct inotify_event) + ev->len;
3051 } 3724 }
3052} 3725}
3053 3726
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 3727inline_size void ecb_cold
3087ev_check_2625 (EV_P) 3728ev_check_2625 (EV_P)
3088{ 3729{
3089 /* kernels < 2.6.25 are borked 3730 /* kernels < 2.6.25 are borked
3090 * http://www.ussg.indiana.edu/hypermail/linux/kernel/0711.3/1208.html 3731 * http://www.ussg.indiana.edu/hypermail/linux/kernel/0711.3/1208.html
3091 */ 3732 */
… …
3412 4053
3413#if EV_EMBED_ENABLE 4054#if EV_EMBED_ENABLE
3414void noinline 4055void noinline
3415ev_embed_sweep (EV_P_ ev_embed *w) 4056ev_embed_sweep (EV_P_ ev_embed *w)
3416{ 4057{
3417 ev_loop (w->other, EVLOOP_NONBLOCK); 4058 ev_run (w->other, EVRUN_NOWAIT);
3418} 4059}
3419 4060
3420static void 4061static void
3421embed_io_cb (EV_P_ ev_io *io, int revents) 4062embed_io_cb (EV_P_ ev_io *io, int revents)
3422{ 4063{
3423 ev_embed *w = (ev_embed *)(((char *)io) - offsetof (ev_embed, io)); 4064 ev_embed *w = (ev_embed *)(((char *)io) - offsetof (ev_embed, io));
3424 4065
3425 if (ev_cb (w)) 4066 if (ev_cb (w))
3426 ev_feed_event (EV_A_ (W)w, EV_EMBED); 4067 ev_feed_event (EV_A_ (W)w, EV_EMBED);
3427 else 4068 else
3428 ev_loop (w->other, EVLOOP_NONBLOCK); 4069 ev_run (w->other, EVRUN_NOWAIT);
3429} 4070}
3430 4071
3431static void 4072static void
3432embed_prepare_cb (EV_P_ ev_prepare *prepare, int revents) 4073embed_prepare_cb (EV_P_ ev_prepare *prepare, int revents)
3433{ 4074{
… …
3437 EV_P = w->other; 4078 EV_P = w->other;
3438 4079
3439 while (fdchangecnt) 4080 while (fdchangecnt)
3440 { 4081 {
3441 fd_reify (EV_A); 4082 fd_reify (EV_A);
3442 ev_loop (EV_A_ EVLOOP_NONBLOCK); 4083 ev_run (EV_A_ EVRUN_NOWAIT);
3443 } 4084 }
3444 } 4085 }
3445} 4086}
3446 4087
3447static void 4088static void
… …
3453 4094
3454 { 4095 {
3455 EV_P = w->other; 4096 EV_P = w->other;
3456 4097
3457 ev_loop_fork (EV_A); 4098 ev_loop_fork (EV_A);
3458 ev_loop (EV_A_ EVLOOP_NONBLOCK); 4099 ev_run (EV_A_ EVRUN_NOWAIT);
3459 } 4100 }
3460 4101
3461 ev_embed_start (EV_A_ w); 4102 ev_embed_start (EV_A_ w);
3462} 4103}
3463 4104
… …
3555 4196
3556 EV_FREQUENT_CHECK; 4197 EV_FREQUENT_CHECK;
3557} 4198}
3558#endif 4199#endif
3559 4200
4201#if EV_CLEANUP_ENABLE
4202void
4203ev_cleanup_start (EV_P_ ev_cleanup *w)
4204{
4205 if (expect_false (ev_is_active (w)))
4206 return;
4207
4208 EV_FREQUENT_CHECK;
4209
4210 ev_start (EV_A_ (W)w, ++cleanupcnt);
4211 array_needsize (ev_cleanup *, cleanups, cleanupmax, cleanupcnt, EMPTY2);
4212 cleanups [cleanupcnt - 1] = w;
4213
4214 /* cleanup watchers should never keep a refcount on the loop */
4215 ev_unref (EV_A);
4216 EV_FREQUENT_CHECK;
4217}
4218
4219void
4220ev_cleanup_stop (EV_P_ ev_cleanup *w)
4221{
4222 clear_pending (EV_A_ (W)w);
4223 if (expect_false (!ev_is_active (w)))
4224 return;
4225
4226 EV_FREQUENT_CHECK;
4227 ev_ref (EV_A);
4228
4229 {
4230 int active = ev_active (w);
4231
4232 cleanups [active - 1] = cleanups [--cleanupcnt];
4233 ev_active (cleanups [active - 1]) = active;
4234 }
4235
4236 ev_stop (EV_A_ (W)w);
4237
4238 EV_FREQUENT_CHECK;
4239}
4240#endif
4241
3560#if EV_ASYNC_ENABLE 4242#if EV_ASYNC_ENABLE
3561void 4243void
3562ev_async_start (EV_P_ ev_async *w) 4244ev_async_start (EV_P_ ev_async *w)
3563{ 4245{
3564 if (expect_false (ev_is_active (w))) 4246 if (expect_false (ev_is_active (w)))
3565 return; 4247 return;
4248
4249 w->sent = 0;
3566 4250
3567 evpipe_init (EV_A); 4251 evpipe_init (EV_A);
3568 4252
3569 EV_FREQUENT_CHECK; 4253 EV_FREQUENT_CHECK;
3570 4254
… …
3673} 4357}
3674 4358
3675/*****************************************************************************/ 4359/*****************************************************************************/
3676 4360
3677#if EV_WALK_ENABLE 4361#if EV_WALK_ENABLE
3678void 4362void ecb_cold
3679ev_walk (EV_P_ int types, void (*cb)(EV_P_ int type, void *w)) 4363ev_walk (EV_P_ int types, void (*cb)(EV_P_ int type, void *w))
3680{ 4364{
3681 int i, j; 4365 int i, j;
3682 ev_watcher_list *wl, *wn; 4366 ev_watcher_list *wl, *wn;
3683 4367
… …
3727 cb (EV_A_ EV_PERIODIC, ANHE_w (periodics [i])); 4411 cb (EV_A_ EV_PERIODIC, ANHE_w (periodics [i]));
3728#endif 4412#endif
3729 4413
3730#if EV_IDLE_ENABLE 4414#if EV_IDLE_ENABLE
3731 if (types & EV_IDLE) 4415 if (types & EV_IDLE)
3732 for (j = NUMPRI; i--; ) 4416 for (j = NUMPRI; j--; )
3733 for (i = idlecnt [j]; i--; ) 4417 for (i = idlecnt [j]; i--; )
3734 cb (EV_A_ EV_IDLE, idles [j][i]); 4418 cb (EV_A_ EV_IDLE, idles [j][i]);
3735#endif 4419#endif
3736 4420
3737#if EV_FORK_ENABLE 4421#if EV_FORK_ENABLE
… …
3790 4474
3791#if EV_MULTIPLICITY 4475#if EV_MULTIPLICITY
3792 #include "ev_wrap.h" 4476 #include "ev_wrap.h"
3793#endif 4477#endif
3794 4478
3795#ifdef __cplusplus
3796}
3797#endif
3798

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