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Comparing libev/ev.c (file contents):
Revision 1.372 by root, Wed Feb 16 08:02:50 2011 UTC vs.
Revision 1.428 by root, Tue May 8 15:44:09 2012 UTC

1/* 1/*
2 * libev event processing core, watcher management 2 * libev event processing core, watcher management
3 * 3 *
4 * Copyright (c) 2007,2008,2009,2010,2011 Marc Alexander Lehmann <libev@schmorp.de> 4 * Copyright (c) 2007,2008,2009,2010,2011,2012 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 *
… …
43# include EV_CONFIG_H 43# include EV_CONFIG_H
44# else 44# else
45# include "config.h" 45# include "config.h"
46# endif 46# endif
47 47
48#if HAVE_FLOOR
49# ifndef EV_USE_FLOOR
50# define EV_USE_FLOOR 1
51# endif
52#endif
53
48# if HAVE_CLOCK_SYSCALL 54# if HAVE_CLOCK_SYSCALL
49# ifndef EV_USE_CLOCK_SYSCALL 55# ifndef EV_USE_CLOCK_SYSCALL
50# define EV_USE_CLOCK_SYSCALL 1 56# define EV_USE_CLOCK_SYSCALL 1
51# ifndef EV_USE_REALTIME 57# ifndef EV_USE_REALTIME
52# define EV_USE_REALTIME 0 58# define EV_USE_REALTIME 0
53# endif 59# endif
54# ifndef EV_USE_MONOTONIC 60# ifndef EV_USE_MONOTONIC
55# define EV_USE_MONOTONIC 1 61# define EV_USE_MONOTONIC 1
56# endif 62# endif
57# endif 63# endif
58# elif !defined(EV_USE_CLOCK_SYSCALL) 64# elif !defined EV_USE_CLOCK_SYSCALL
59# define EV_USE_CLOCK_SYSCALL 0 65# define EV_USE_CLOCK_SYSCALL 0
60# endif 66# endif
61 67
62# if HAVE_CLOCK_GETTIME 68# if HAVE_CLOCK_GETTIME
63# ifndef EV_USE_MONOTONIC 69# ifndef EV_USE_MONOTONIC
… …
156# define EV_USE_EVENTFD 0 162# define EV_USE_EVENTFD 0
157# endif 163# endif
158 164
159#endif 165#endif
160 166
161#include <math.h>
162#include <stdlib.h> 167#include <stdlib.h>
163#include <string.h> 168#include <string.h>
164#include <fcntl.h> 169#include <fcntl.h>
165#include <stddef.h> 170#include <stddef.h>
166 171
… …
178# include EV_H 183# include EV_H
179#else 184#else
180# include "ev.h" 185# include "ev.h"
181#endif 186#endif
182 187
183EV_CPP(extern "C" {) 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
197#endif
184 198
185#ifndef _WIN32 199#ifndef _WIN32
186# include <sys/time.h> 200# include <sys/time.h>
187# include <sys/wait.h> 201# include <sys/wait.h>
188# include <unistd.h> 202# include <unistd.h>
189#else 203#else
190# include <io.h> 204# include <io.h>
191# define WIN32_LEAN_AND_MEAN 205# define WIN32_LEAN_AND_MEAN
192# include <windows.h> 206# include <windows.h>
207# include <winsock2.h>
193# ifndef EV_SELECT_IS_WINSOCKET 208# ifndef EV_SELECT_IS_WINSOCKET
194# define EV_SELECT_IS_WINSOCKET 1 209# define EV_SELECT_IS_WINSOCKET 1
195# endif 210# endif
196# undef EV_AVOID_STDIO 211# undef EV_AVOID_STDIO
197#endif 212#endif
… …
205#define _DARWIN_UNLIMITED_SELECT 1 220#define _DARWIN_UNLIMITED_SELECT 1
206 221
207/* this block tries to deduce configuration from header-defined symbols and defaults */ 222/* this block tries to deduce configuration from header-defined symbols and defaults */
208 223
209/* try to deduce the maximum number of signals on this platform */ 224/* try to deduce the maximum number of signals on this platform */
210#if defined (EV_NSIG) 225#if defined EV_NSIG
211/* use what's provided */ 226/* use what's provided */
212#elif defined (NSIG) 227#elif defined NSIG
213# define EV_NSIG (NSIG) 228# define EV_NSIG (NSIG)
214#elif defined(_NSIG) 229#elif defined _NSIG
215# define EV_NSIG (_NSIG) 230# define EV_NSIG (_NSIG)
216#elif defined (SIGMAX) 231#elif defined SIGMAX
217# define EV_NSIG (SIGMAX+1) 232# define EV_NSIG (SIGMAX+1)
218#elif defined (SIG_MAX) 233#elif defined SIG_MAX
219# define EV_NSIG (SIG_MAX+1) 234# define EV_NSIG (SIG_MAX+1)
220#elif defined (_SIG_MAX) 235#elif defined _SIG_MAX
221# define EV_NSIG (_SIG_MAX+1) 236# define EV_NSIG (_SIG_MAX+1)
222#elif defined (MAXSIG) 237#elif defined MAXSIG
223# define EV_NSIG (MAXSIG+1) 238# define EV_NSIG (MAXSIG+1)
224#elif defined (MAX_SIG) 239#elif defined MAX_SIG
225# define EV_NSIG (MAX_SIG+1) 240# define EV_NSIG (MAX_SIG+1)
226#elif defined (SIGARRAYSIZE) 241#elif defined SIGARRAYSIZE
227# define EV_NSIG (SIGARRAYSIZE) /* Assume ary[SIGARRAYSIZE] */ 242# define EV_NSIG (SIGARRAYSIZE) /* Assume ary[SIGARRAYSIZE] */
228#elif defined (_sys_nsig) 243#elif defined _sys_nsig
229# define EV_NSIG (_sys_nsig) /* Solaris 2.5 */ 244# define EV_NSIG (_sys_nsig) /* Solaris 2.5 */
230#else 245#else
231# error "unable to find value for NSIG, please report" 246# error "unable to find value for NSIG, please report"
232/* to make it compile regardless, just remove the above line, */ 247/* to make it compile regardless, just remove the above line, */
233/* but consider reporting it, too! :) */ 248/* but consider reporting it, too! :) */
234# define EV_NSIG 65 249# define EV_NSIG 65
235#endif 250#endif
236 251
252#ifndef EV_USE_FLOOR
253# define EV_USE_FLOOR 0
254#endif
255
237#ifndef EV_USE_CLOCK_SYSCALL 256#ifndef EV_USE_CLOCK_SYSCALL
238# if __linux && __GLIBC__ >= 2 257# if __linux && __GLIBC__ >= 2
239# define EV_USE_CLOCK_SYSCALL EV_FEATURE_OS 258# define EV_USE_CLOCK_SYSCALL EV_FEATURE_OS
240# else 259# else
241# define EV_USE_CLOCK_SYSCALL 0 260# define EV_USE_CLOCK_SYSCALL 0
242# endif 261# endif
243#endif 262#endif
244 263
245#ifndef EV_USE_MONOTONIC 264#ifndef EV_USE_MONOTONIC
246# if defined (_POSIX_MONOTONIC_CLOCK) && _POSIX_MONOTONIC_CLOCK >= 0 265# if defined _POSIX_MONOTONIC_CLOCK && _POSIX_MONOTONIC_CLOCK >= 0
247# define EV_USE_MONOTONIC EV_FEATURE_OS 266# define EV_USE_MONOTONIC EV_FEATURE_OS
248# else 267# else
249# define EV_USE_MONOTONIC 0 268# define EV_USE_MONOTONIC 0
250# endif 269# endif
251#endif 270#endif
… …
341#endif 360#endif
342 361
343/* on linux, we can use a (slow) syscall to avoid a dependency on pthread, */ 362/* on linux, we can use a (slow) syscall to avoid a dependency on pthread, */
344/* which makes programs even slower. might work on other unices, too. */ 363/* which makes programs even slower. might work on other unices, too. */
345#if EV_USE_CLOCK_SYSCALL 364#if EV_USE_CLOCK_SYSCALL
346# include <syscall.h> 365# include <sys/syscall.h>
347# ifdef SYS_clock_gettime 366# ifdef SYS_clock_gettime
348# define clock_gettime(id, ts) syscall (SYS_clock_gettime, (id), (ts)) 367# define clock_gettime(id, ts) syscall (SYS_clock_gettime, (id), (ts))
349# undef EV_USE_MONOTONIC 368# undef EV_USE_MONOTONIC
350# define EV_USE_MONOTONIC 1 369# define EV_USE_MONOTONIC 1
351# else 370# else
… …
377# define EV_USE_INOTIFY 0 396# define EV_USE_INOTIFY 0
378#endif 397#endif
379 398
380#if !EV_USE_NANOSLEEP 399#if !EV_USE_NANOSLEEP
381/* hp-ux has it in sys/time.h, which we unconditionally include above */ 400/* hp-ux has it in sys/time.h, which we unconditionally include above */
382# if !defined(_WIN32) && !defined(__hpux) 401# if !defined _WIN32 && !defined __hpux
383# include <sys/select.h> 402# include <sys/select.h>
384# endif 403# endif
385#endif 404#endif
386 405
387#if EV_USE_INOTIFY 406#if EV_USE_INOTIFY
… …
443#else 462#else
444# define EV_FREQUENT_CHECK do { } while (0) 463# define EV_FREQUENT_CHECK do { } while (0)
445#endif 464#endif
446 465
447/* 466/*
448 * This is used to avoid floating point rounding problems. 467 * This is used to work around floating point rounding problems.
449 * It is added to ev_rt_now when scheduling periodics
450 * to ensure progress, time-wise, even when rounding
451 * errors are against us.
452 * This value is good at least till the year 4000. 468 * This value is good at least till the year 4000.
453 * Better solutions welcome.
454 */ 469 */
455#define TIME_EPSILON 0.0001220703125 /* 1/8192 */ 470#define MIN_INTERVAL 0.0001220703125 /* 1/2**13, good till 4000 */
471/*#define MIN_INTERVAL 0.00000095367431640625 /* 1/2**20, good till 2200 */
456 472
457#define MIN_TIMEJUMP 1. /* minimum timejump that gets detected (if monotonic clock available) */ 473#define MIN_TIMEJUMP 1. /* minimum timejump that gets detected (if monotonic clock available) */
458#define MAX_BLOCKTIME 59.743 /* never wait longer than this time (to detect time jumps) */ 474#define MAX_BLOCKTIME 59.743 /* never wait longer than this time (to detect time jumps) */
459 475
460#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_TV_SET(tv,t) do { tv.tv_sec = (long)t; tv.tv_usec = (long)((t - tv.tv_sec) * 1e6); } while (0)
461#define EV_TS_SET(ts,t) do { ts.tv_sec = (long)t; ts.tv_nsec = (long)((t - ts.tv_sec) * 1e9); } while (0) 477#define EV_TS_SET(ts,t) do { ts.tv_sec = (long)t; ts.tv_nsec = (long)((t - ts.tv_sec) * 1e9); } while (0)
462 478
479/* the following is ecb.h embedded into libev - use update_ev_c to update from an external copy */
480/* ECB.H BEGIN */
481/*
482 * libecb - http://software.schmorp.de/pkg/libecb
483 *
484 * Copyright (©) 2009-2012 Marc Alexander Lehmann <libecb@schmorp.de>
485 * Copyright (©) 2011 Emanuele Giaquinta
486 * All rights reserved.
487 *
488 * Redistribution and use in source and binary forms, with or without modifica-
489 * tion, are permitted provided that the following conditions are met:
490 *
491 * 1. Redistributions of source code must retain the above copyright notice,
492 * this list of conditions and the following disclaimer.
493 *
494 * 2. Redistributions in binary form must reproduce the above copyright
495 * notice, this list of conditions and the following disclaimer in the
496 * documentation and/or other materials provided with the distribution.
497 *
498 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR IMPLIED
499 * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MER-
500 * CHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO
501 * EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPE-
502 * CIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
503 * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS;
504 * OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
505 * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTH-
506 * ERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
507 * OF THE POSSIBILITY OF SUCH DAMAGE.
508 */
509
510#ifndef ECB_H
511#define ECB_H
512
513#ifdef _WIN32
514 typedef signed char int8_t;
515 typedef unsigned char uint8_t;
516 typedef signed short int16_t;
517 typedef unsigned short uint16_t;
518 typedef signed int int32_t;
519 typedef unsigned int uint32_t;
463#if __GNUC__ >= 4 520 #if __GNUC__
464# define expect(expr,value) __builtin_expect ((expr),(value)) 521 typedef signed long long int64_t;
465# define noinline __attribute__ ((noinline)) 522 typedef unsigned long long uint64_t;
523 #else /* _MSC_VER || __BORLANDC__ */
524 typedef signed __int64 int64_t;
525 typedef unsigned __int64 uint64_t;
526 #endif
466#else 527#else
467# define expect(expr,value) (expr) 528 #include <inttypes.h>
468# define noinline
469# if __STDC_VERSION__ < 199901L && __GNUC__ < 2
470# define inline
471# endif 529#endif
530
531/* many compilers define _GNUC_ to some versions but then only implement
532 * what their idiot authors think are the "more important" extensions,
533 * causing enormous grief in return for some better fake benchmark numbers.
534 * or so.
535 * we try to detect these and simply assume they are not gcc - if they have
536 * an issue with that they should have done it right in the first place.
537 */
538#ifndef ECB_GCC_VERSION
539 #if !defined __GNUC_MINOR__ || defined __INTEL_COMPILER || defined __SUNPRO_C || defined __SUNPRO_CC || defined __llvm__ || defined __clang__
540 #define ECB_GCC_VERSION(major,minor) 0
541 #else
542 #define ECB_GCC_VERSION(major,minor) (__GNUC__ > (major) || (__GNUC__ == (major) && __GNUC_MINOR__ >= (minor)))
472#endif 543 #endif
544#endif
473 545
546/*****************************************************************************/
547
548/* ECB_NO_THREADS - ecb is not used by multiple threads, ever */
549/* ECB_NO_SMP - ecb might be used in multiple threads, but only on a single cpu */
550
551#if ECB_NO_THREADS
552# define ECB_NO_SMP 1
553#endif
554
555#if ECB_NO_THREADS || ECB_NO_SMP
556 #define ECB_MEMORY_FENCE do { } while (0)
557#endif
558
559#ifndef ECB_MEMORY_FENCE
560 #if ECB_GCC_VERSION(2,5) || defined __INTEL_COMPILER || (__llvm__ && __GNUC__) || __SUNPRO_C >= 0x5110 || __SUNPRO_CC >= 0x5110
561 #if __i386 || __i386__
562 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("lock; orb $0, -1(%%esp)" : : : "memory")
563 #define ECB_MEMORY_FENCE_ACQUIRE ECB_MEMORY_FENCE /* non-lock xchg might be enough */
564 #define ECB_MEMORY_FENCE_RELEASE do { } while (0) /* unlikely to change in future cpus */
565 #elif __amd64 || __amd64__ || __x86_64 || __x86_64__
566 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("mfence" : : : "memory")
567 #define ECB_MEMORY_FENCE_ACQUIRE __asm__ __volatile__ ("lfence" : : : "memory")
568 #define ECB_MEMORY_FENCE_RELEASE __asm__ __volatile__ ("sfence") /* play safe - not needed in any current cpu */
569 #elif __powerpc__ || __ppc__ || __powerpc64__ || __ppc64__
570 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("sync" : : : "memory")
571 #elif defined __ARM_ARCH_6__ || defined __ARM_ARCH_6J__ \
572 || defined __ARM_ARCH_6K__ || defined __ARM_ARCH_6ZK__
573 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("mcr p15,0,%0,c7,c10,5" : : "r" (0) : "memory")
574 #elif defined __ARM_ARCH_7__ || defined __ARM_ARCH_7A__ \
575 || defined __ARM_ARCH_7M__ || defined __ARM_ARCH_7R__
576 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("dmb" : : : "memory")
577 #elif __sparc || __sparc__
578 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("membar #LoadStore | #LoadLoad | #StoreStore | #StoreLoad | " : : : "memory")
579 #define ECB_MEMORY_FENCE_ACQUIRE __asm__ __volatile__ ("membar #LoadStore | #LoadLoad" : : : "memory")
580 #define ECB_MEMORY_FENCE_RELEASE __asm__ __volatile__ ("membar #LoadStore | #StoreStore")
581 #elif defined __s390__ || defined __s390x__
582 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("bcr 15,0" : : : "memory")
583 #elif defined __mips__
584 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("sync" : : : "memory")
585 #elif defined __alpha__
586 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("mb" : : : "memory")
587 #endif
588 #endif
589#endif
590
591#ifndef ECB_MEMORY_FENCE
592 #if ECB_GCC_VERSION(4,4) || defined __INTEL_COMPILER || defined __clang__
593 #define ECB_MEMORY_FENCE __sync_synchronize ()
594 /*#define ECB_MEMORY_FENCE_ACQUIRE ({ char dummy = 0; __sync_lock_test_and_set (&dummy, 1); }) */
595 /*#define ECB_MEMORY_FENCE_RELEASE ({ char dummy = 1; __sync_lock_release (&dummy ); }) */
596 #elif _MSC_VER >= 1400 /* VC++ 2005 */
597 #pragma intrinsic(_ReadBarrier,_WriteBarrier,_ReadWriteBarrier)
598 #define ECB_MEMORY_FENCE _ReadWriteBarrier ()
599 #define ECB_MEMORY_FENCE_ACQUIRE _ReadWriteBarrier () /* according to msdn, _ReadBarrier is not a load fence */
600 #define ECB_MEMORY_FENCE_RELEASE _WriteBarrier ()
601 #elif defined _WIN32
602 #include <WinNT.h>
603 #define ECB_MEMORY_FENCE MemoryBarrier () /* actually just xchg on x86... scary */
604 #elif __SUNPRO_C >= 0x5110 || __SUNPRO_CC >= 0x5110
605 #include <mbarrier.h>
606 #define ECB_MEMORY_FENCE __machine_rw_barrier ()
607 #define ECB_MEMORY_FENCE_ACQUIRE __machine_r_barrier ()
608 #define ECB_MEMORY_FENCE_RELEASE __machine_w_barrier ()
609 #elif __xlC__
610 #define ECB_MEMORY_FENCE __sync ()
611 #endif
612#endif
613
614#ifndef ECB_MEMORY_FENCE
615 #if !ECB_AVOID_PTHREADS
616 /*
617 * if you get undefined symbol references to pthread_mutex_lock,
618 * or failure to find pthread.h, then you should implement
619 * the ECB_MEMORY_FENCE operations for your cpu/compiler
620 * OR provide pthread.h and link against the posix thread library
621 * of your system.
622 */
623 #include <pthread.h>
624 #define ECB_NEEDS_PTHREADS 1
625 #define ECB_MEMORY_FENCE_NEEDS_PTHREADS 1
626
627 static pthread_mutex_t ecb_mf_lock = PTHREAD_MUTEX_INITIALIZER;
628 #define ECB_MEMORY_FENCE do { pthread_mutex_lock (&ecb_mf_lock); pthread_mutex_unlock (&ecb_mf_lock); } while (0)
629 #endif
630#endif
631
632#if !defined ECB_MEMORY_FENCE_ACQUIRE && defined ECB_MEMORY_FENCE
633 #define ECB_MEMORY_FENCE_ACQUIRE ECB_MEMORY_FENCE
634#endif
635
636#if !defined ECB_MEMORY_FENCE_RELEASE && defined ECB_MEMORY_FENCE
637 #define ECB_MEMORY_FENCE_RELEASE ECB_MEMORY_FENCE
638#endif
639
640/*****************************************************************************/
641
642#define ECB_C99 (__STDC_VERSION__ >= 199901L)
643
644#if __cplusplus
645 #define ecb_inline static inline
646#elif ECB_GCC_VERSION(2,5)
647 #define ecb_inline static __inline__
648#elif ECB_C99
649 #define ecb_inline static inline
650#else
651 #define ecb_inline static
652#endif
653
654#if ECB_GCC_VERSION(3,3)
655 #define ecb_restrict __restrict__
656#elif ECB_C99
657 #define ecb_restrict restrict
658#else
659 #define ecb_restrict
660#endif
661
662typedef int ecb_bool;
663
664#define ECB_CONCAT_(a, b) a ## b
665#define ECB_CONCAT(a, b) ECB_CONCAT_(a, b)
666#define ECB_STRINGIFY_(a) # a
667#define ECB_STRINGIFY(a) ECB_STRINGIFY_(a)
668
669#define ecb_function_ ecb_inline
670
671#if ECB_GCC_VERSION(3,1)
672 #define ecb_attribute(attrlist) __attribute__(attrlist)
673 #define ecb_is_constant(expr) __builtin_constant_p (expr)
674 #define ecb_expect(expr,value) __builtin_expect ((expr),(value))
675 #define ecb_prefetch(addr,rw,locality) __builtin_prefetch (addr, rw, locality)
676#else
677 #define ecb_attribute(attrlist)
678 #define ecb_is_constant(expr) 0
679 #define ecb_expect(expr,value) (expr)
680 #define ecb_prefetch(addr,rw,locality)
681#endif
682
683/* no emulation for ecb_decltype */
684#if ECB_GCC_VERSION(4,5)
685 #define ecb_decltype(x) __decltype(x)
686#elif ECB_GCC_VERSION(3,0)
687 #define ecb_decltype(x) __typeof(x)
688#endif
689
690#define ecb_noinline ecb_attribute ((__noinline__))
691#define ecb_noreturn ecb_attribute ((__noreturn__))
692#define ecb_unused ecb_attribute ((__unused__))
693#define ecb_const ecb_attribute ((__const__))
694#define ecb_pure ecb_attribute ((__pure__))
695
696#if ECB_GCC_VERSION(4,3)
697 #define ecb_artificial ecb_attribute ((__artificial__))
698 #define ecb_hot ecb_attribute ((__hot__))
699 #define ecb_cold ecb_attribute ((__cold__))
700#else
701 #define ecb_artificial
702 #define ecb_hot
703 #define ecb_cold
704#endif
705
706/* put around conditional expressions if you are very sure that the */
707/* expression is mostly true or mostly false. note that these return */
708/* booleans, not the expression. */
474#define expect_false(expr) expect ((expr) != 0, 0) 709#define ecb_expect_false(expr) ecb_expect (!!(expr), 0)
475#define expect_true(expr) expect ((expr) != 0, 1) 710#define ecb_expect_true(expr) ecb_expect (!!(expr), 1)
711/* for compatibility to the rest of the world */
712#define ecb_likely(expr) ecb_expect_true (expr)
713#define ecb_unlikely(expr) ecb_expect_false (expr)
714
715/* count trailing zero bits and count # of one bits */
716#if ECB_GCC_VERSION(3,4)
717 /* we assume int == 32 bit, long == 32 or 64 bit and long long == 64 bit */
718 #define ecb_ld32(x) (__builtin_clz (x) ^ 31)
719 #define ecb_ld64(x) (__builtin_clzll (x) ^ 63)
720 #define ecb_ctz32(x) __builtin_ctz (x)
721 #define ecb_ctz64(x) __builtin_ctzll (x)
722 #define ecb_popcount32(x) __builtin_popcount (x)
723 /* no popcountll */
724#else
725 ecb_function_ int ecb_ctz32 (uint32_t x) ecb_const;
726 ecb_function_ int
727 ecb_ctz32 (uint32_t x)
728 {
729 int r = 0;
730
731 x &= ~x + 1; /* this isolates the lowest bit */
732
733#if ECB_branchless_on_i386
734 r += !!(x & 0xaaaaaaaa) << 0;
735 r += !!(x & 0xcccccccc) << 1;
736 r += !!(x & 0xf0f0f0f0) << 2;
737 r += !!(x & 0xff00ff00) << 3;
738 r += !!(x & 0xffff0000) << 4;
739#else
740 if (x & 0xaaaaaaaa) r += 1;
741 if (x & 0xcccccccc) r += 2;
742 if (x & 0xf0f0f0f0) r += 4;
743 if (x & 0xff00ff00) r += 8;
744 if (x & 0xffff0000) r += 16;
745#endif
746
747 return r;
748 }
749
750 ecb_function_ int ecb_ctz64 (uint64_t x) ecb_const;
751 ecb_function_ int
752 ecb_ctz64 (uint64_t x)
753 {
754 int shift = x & 0xffffffffU ? 0 : 32;
755 return ecb_ctz32 (x >> shift) + shift;
756 }
757
758 ecb_function_ int ecb_popcount32 (uint32_t x) ecb_const;
759 ecb_function_ int
760 ecb_popcount32 (uint32_t x)
761 {
762 x -= (x >> 1) & 0x55555555;
763 x = ((x >> 2) & 0x33333333) + (x & 0x33333333);
764 x = ((x >> 4) + x) & 0x0f0f0f0f;
765 x *= 0x01010101;
766
767 return x >> 24;
768 }
769
770 ecb_function_ int ecb_ld32 (uint32_t x) ecb_const;
771 ecb_function_ int ecb_ld32 (uint32_t x)
772 {
773 int r = 0;
774
775 if (x >> 16) { x >>= 16; r += 16; }
776 if (x >> 8) { x >>= 8; r += 8; }
777 if (x >> 4) { x >>= 4; r += 4; }
778 if (x >> 2) { x >>= 2; r += 2; }
779 if (x >> 1) { r += 1; }
780
781 return r;
782 }
783
784 ecb_function_ int ecb_ld64 (uint64_t x) ecb_const;
785 ecb_function_ int ecb_ld64 (uint64_t x)
786 {
787 int r = 0;
788
789 if (x >> 32) { x >>= 32; r += 32; }
790
791 return r + ecb_ld32 (x);
792 }
793#endif
794
795ecb_function_ uint8_t ecb_bitrev8 (uint8_t x) ecb_const;
796ecb_function_ uint8_t ecb_bitrev8 (uint8_t x)
797{
798 return ( (x * 0x0802U & 0x22110U)
799 | (x * 0x8020U & 0x88440U)) * 0x10101U >> 16;
800}
801
802ecb_function_ uint16_t ecb_bitrev16 (uint16_t x) ecb_const;
803ecb_function_ uint16_t ecb_bitrev16 (uint16_t x)
804{
805 x = ((x >> 1) & 0x5555) | ((x & 0x5555) << 1);
806 x = ((x >> 2) & 0x3333) | ((x & 0x3333) << 2);
807 x = ((x >> 4) & 0x0f0f) | ((x & 0x0f0f) << 4);
808 x = ( x >> 8 ) | ( x << 8);
809
810 return x;
811}
812
813ecb_function_ uint32_t ecb_bitrev32 (uint32_t x) ecb_const;
814ecb_function_ uint32_t ecb_bitrev32 (uint32_t x)
815{
816 x = ((x >> 1) & 0x55555555) | ((x & 0x55555555) << 1);
817 x = ((x >> 2) & 0x33333333) | ((x & 0x33333333) << 2);
818 x = ((x >> 4) & 0x0f0f0f0f) | ((x & 0x0f0f0f0f) << 4);
819 x = ((x >> 8) & 0x00ff00ff) | ((x & 0x00ff00ff) << 8);
820 x = ( x >> 16 ) | ( x << 16);
821
822 return x;
823}
824
825/* popcount64 is only available on 64 bit cpus as gcc builtin */
826/* so for this version we are lazy */
827ecb_function_ int ecb_popcount64 (uint64_t x) ecb_const;
828ecb_function_ int
829ecb_popcount64 (uint64_t x)
830{
831 return ecb_popcount32 (x) + ecb_popcount32 (x >> 32);
832}
833
834ecb_inline uint8_t ecb_rotl8 (uint8_t x, unsigned int count) ecb_const;
835ecb_inline uint8_t ecb_rotr8 (uint8_t x, unsigned int count) ecb_const;
836ecb_inline uint16_t ecb_rotl16 (uint16_t x, unsigned int count) ecb_const;
837ecb_inline uint16_t ecb_rotr16 (uint16_t x, unsigned int count) ecb_const;
838ecb_inline uint32_t ecb_rotl32 (uint32_t x, unsigned int count) ecb_const;
839ecb_inline uint32_t ecb_rotr32 (uint32_t x, unsigned int count) ecb_const;
840ecb_inline uint64_t ecb_rotl64 (uint64_t x, unsigned int count) ecb_const;
841ecb_inline uint64_t ecb_rotr64 (uint64_t x, unsigned int count) ecb_const;
842
843ecb_inline uint8_t ecb_rotl8 (uint8_t x, unsigned int count) { return (x >> ( 8 - count)) | (x << count); }
844ecb_inline uint8_t ecb_rotr8 (uint8_t x, unsigned int count) { return (x << ( 8 - count)) | (x >> count); }
845ecb_inline uint16_t ecb_rotl16 (uint16_t x, unsigned int count) { return (x >> (16 - count)) | (x << count); }
846ecb_inline uint16_t ecb_rotr16 (uint16_t x, unsigned int count) { return (x << (16 - count)) | (x >> count); }
847ecb_inline uint32_t ecb_rotl32 (uint32_t x, unsigned int count) { return (x >> (32 - count)) | (x << count); }
848ecb_inline uint32_t ecb_rotr32 (uint32_t x, unsigned int count) { return (x << (32 - count)) | (x >> count); }
849ecb_inline uint64_t ecb_rotl64 (uint64_t x, unsigned int count) { return (x >> (64 - count)) | (x << count); }
850ecb_inline uint64_t ecb_rotr64 (uint64_t x, unsigned int count) { return (x << (64 - count)) | (x >> count); }
851
852#if ECB_GCC_VERSION(4,3)
853 #define ecb_bswap16(x) (__builtin_bswap32 (x) >> 16)
854 #define ecb_bswap32(x) __builtin_bswap32 (x)
855 #define ecb_bswap64(x) __builtin_bswap64 (x)
856#else
857 ecb_function_ uint16_t ecb_bswap16 (uint16_t x) ecb_const;
858 ecb_function_ uint16_t
859 ecb_bswap16 (uint16_t x)
860 {
861 return ecb_rotl16 (x, 8);
862 }
863
864 ecb_function_ uint32_t ecb_bswap32 (uint32_t x) ecb_const;
865 ecb_function_ uint32_t
866 ecb_bswap32 (uint32_t x)
867 {
868 return (((uint32_t)ecb_bswap16 (x)) << 16) | ecb_bswap16 (x >> 16);
869 }
870
871 ecb_function_ uint64_t ecb_bswap64 (uint64_t x) ecb_const;
872 ecb_function_ uint64_t
873 ecb_bswap64 (uint64_t x)
874 {
875 return (((uint64_t)ecb_bswap32 (x)) << 32) | ecb_bswap32 (x >> 32);
876 }
877#endif
878
879#if ECB_GCC_VERSION(4,5)
880 #define ecb_unreachable() __builtin_unreachable ()
881#else
882 /* this seems to work fine, but gcc always emits a warning for it :/ */
883 ecb_inline void ecb_unreachable (void) ecb_noreturn;
884 ecb_inline void ecb_unreachable (void) { }
885#endif
886
887/* try to tell the compiler that some condition is definitely true */
888#define ecb_assume(cond) do { if (!(cond)) ecb_unreachable (); } while (0)
889
890ecb_inline unsigned char ecb_byteorder_helper (void) ecb_const;
891ecb_inline unsigned char
892ecb_byteorder_helper (void)
893{
894 const uint32_t u = 0x11223344;
895 return *(unsigned char *)&u;
896}
897
898ecb_inline ecb_bool ecb_big_endian (void) ecb_const;
899ecb_inline ecb_bool ecb_big_endian (void) { return ecb_byteorder_helper () == 0x11; }
900ecb_inline ecb_bool ecb_little_endian (void) ecb_const;
901ecb_inline ecb_bool ecb_little_endian (void) { return ecb_byteorder_helper () == 0x44; }
902
903#if ECB_GCC_VERSION(3,0) || ECB_C99
904 #define ecb_mod(m,n) ((m) % (n) + ((m) % (n) < 0 ? (n) : 0))
905#else
906 #define ecb_mod(m,n) ((m) < 0 ? ((n) - 1 - ((-1 - (m)) % (n))) : ((m) % (n)))
907#endif
908
909#if __cplusplus
910 template<typename T>
911 static inline T ecb_div_rd (T val, T div)
912 {
913 return val < 0 ? - ((-val + div - 1) / div) : (val ) / div;
914 }
915 template<typename T>
916 static inline T ecb_div_ru (T val, T div)
917 {
918 return val < 0 ? - ((-val ) / div) : (val + div - 1) / div;
919 }
920#else
921 #define ecb_div_rd(val,div) ((val) < 0 ? - ((-(val) + (div) - 1) / (div)) : ((val) ) / (div))
922 #define ecb_div_ru(val,div) ((val) < 0 ? - ((-(val) ) / (div)) : ((val) + (div) - 1) / (div))
923#endif
924
925#if ecb_cplusplus_does_not_suck
926 /* does not work for local types (http://www.open-std.org/jtc1/sc22/wg21/docs/papers/2008/n2657.htm) */
927 template<typename T, int N>
928 static inline int ecb_array_length (const T (&arr)[N])
929 {
930 return N;
931 }
932#else
933 #define ecb_array_length(name) (sizeof (name) / sizeof (name [0]))
934#endif
935
936#endif
937
938/* ECB.H END */
939
940#if ECB_MEMORY_FENCE_NEEDS_PTHREADS
941/* if your architecture doesn't need memory fences, e.g. because it is
942 * single-cpu/core, or if you use libev in a project that doesn't use libev
943 * from multiple threads, then you can define ECB_AVOID_PTHREADS when compiling
944 * libev, in which cases the memory fences become nops.
945 * alternatively, you can remove this #error and link against libpthread,
946 * which will then provide the memory fences.
947 */
948# error "memory fences not defined for your architecture, please report"
949#endif
950
951#ifndef ECB_MEMORY_FENCE
952# define ECB_MEMORY_FENCE do { } while (0)
953# define ECB_MEMORY_FENCE_ACQUIRE ECB_MEMORY_FENCE
954# define ECB_MEMORY_FENCE_RELEASE ECB_MEMORY_FENCE
955#endif
956
957#define expect_false(cond) ecb_expect_false (cond)
958#define expect_true(cond) ecb_expect_true (cond)
959#define noinline ecb_noinline
960
476#define inline_size static inline 961#define inline_size ecb_inline
477 962
478#if EV_FEATURE_CODE 963#if EV_FEATURE_CODE
479# define inline_speed static inline 964# define inline_speed ecb_inline
480#else 965#else
481# define inline_speed static noinline 966# define inline_speed static noinline
482#endif 967#endif
483 968
484#define NUMPRI (EV_MAXPRI - EV_MINPRI + 1) 969#define NUMPRI (EV_MAXPRI - EV_MINPRI + 1)
… …
523# include "ev_win32.c" 1008# include "ev_win32.c"
524#endif 1009#endif
525 1010
526/*****************************************************************************/ 1011/*****************************************************************************/
527 1012
1013/* define a suitable floor function (only used by periodics atm) */
1014
1015#if EV_USE_FLOOR
1016# include <math.h>
1017# define ev_floor(v) floor (v)
1018#else
1019
1020#include <float.h>
1021
1022/* a floor() replacement function, should be independent of ev_tstamp type */
1023static ev_tstamp noinline
1024ev_floor (ev_tstamp v)
1025{
1026 /* the choice of shift factor is not terribly important */
1027#if FLT_RADIX != 2 /* assume FLT_RADIX == 10 */
1028 const ev_tstamp shift = sizeof (unsigned long) >= 8 ? 10000000000000000000. : 1000000000.;
1029#else
1030 const ev_tstamp shift = sizeof (unsigned long) >= 8 ? 18446744073709551616. : 4294967296.;
1031#endif
1032
1033 /* argument too large for an unsigned long? */
1034 if (expect_false (v >= shift))
1035 {
1036 ev_tstamp f;
1037
1038 if (v == v - 1.)
1039 return v; /* very large number */
1040
1041 f = shift * ev_floor (v * (1. / shift));
1042 return f + ev_floor (v - f);
1043 }
1044
1045 /* special treatment for negative args? */
1046 if (expect_false (v < 0.))
1047 {
1048 ev_tstamp f = -ev_floor (-v);
1049
1050 return f - (f == v ? 0 : 1);
1051 }
1052
1053 /* fits into an unsigned long */
1054 return (unsigned long)v;
1055}
1056
1057#endif
1058
1059/*****************************************************************************/
1060
528#ifdef __linux 1061#ifdef __linux
529# include <sys/utsname.h> 1062# include <sys/utsname.h>
530#endif 1063#endif
531 1064
532static unsigned int noinline 1065static unsigned int noinline ecb_cold
533ev_linux_version (void) 1066ev_linux_version (void)
534{ 1067{
535#ifdef __linux 1068#ifdef __linux
536 unsigned int v = 0; 1069 unsigned int v = 0;
537 struct utsname buf; 1070 struct utsname buf;
… …
566} 1099}
567 1100
568/*****************************************************************************/ 1101/*****************************************************************************/
569 1102
570#if EV_AVOID_STDIO 1103#if EV_AVOID_STDIO
571static void noinline 1104static void noinline ecb_cold
572ev_printerr (const char *msg) 1105ev_printerr (const char *msg)
573{ 1106{
574 write (STDERR_FILENO, msg, strlen (msg)); 1107 write (STDERR_FILENO, msg, strlen (msg));
575} 1108}
576#endif 1109#endif
577 1110
578static void (*syserr_cb)(const char *msg); 1111static void (*syserr_cb)(const char *msg) EV_THROW;
579 1112
580void 1113void ecb_cold
581ev_set_syserr_cb (void (*cb)(const char *msg)) 1114ev_set_syserr_cb (void (*cb)(const char *msg)) EV_THROW
582{ 1115{
583 syserr_cb = cb; 1116 syserr_cb = cb;
584} 1117}
585 1118
586static void noinline 1119static void noinline ecb_cold
587ev_syserr (const char *msg) 1120ev_syserr (const char *msg)
588{ 1121{
589 if (!msg) 1122 if (!msg)
590 msg = "(libev) system error"; 1123 msg = "(libev) system error";
591 1124
… …
622 free (ptr); 1155 free (ptr);
623 return 0; 1156 return 0;
624#endif 1157#endif
625} 1158}
626 1159
627static void *(*alloc)(void *ptr, long size) = ev_realloc_emul; 1160static void *(*alloc)(void *ptr, long size) EV_THROW = ev_realloc_emul;
628 1161
629void 1162void ecb_cold
630ev_set_allocator (void *(*cb)(void *ptr, long size)) 1163ev_set_allocator (void *(*cb)(void *ptr, long size)) EV_THROW
631{ 1164{
632 alloc = cb; 1165 alloc = cb;
633} 1166}
634 1167
635inline_speed void * 1168inline_speed void *
… …
723 #undef VAR 1256 #undef VAR
724 }; 1257 };
725 #include "ev_wrap.h" 1258 #include "ev_wrap.h"
726 1259
727 static struct ev_loop default_loop_struct; 1260 static struct ev_loop default_loop_struct;
728 struct ev_loop *ev_default_loop_ptr; 1261 EV_API_DECL struct ev_loop *ev_default_loop_ptr = 0; /* needs to be initialised to make it a definition despite extern */
729 1262
730#else 1263#else
731 1264
732 ev_tstamp ev_rt_now; 1265 EV_API_DECL ev_tstamp ev_rt_now = 0; /* needs to be initialised to make it a definition despite extern */
733 #define VAR(name,decl) static decl; 1266 #define VAR(name,decl) static decl;
734 #include "ev_vars.h" 1267 #include "ev_vars.h"
735 #undef VAR 1268 #undef VAR
736 1269
737 static int ev_default_loop_ptr; 1270 static int ev_default_loop_ptr;
… …
752 1285
753/*****************************************************************************/ 1286/*****************************************************************************/
754 1287
755#ifndef EV_HAVE_EV_TIME 1288#ifndef EV_HAVE_EV_TIME
756ev_tstamp 1289ev_tstamp
757ev_time (void) 1290ev_time (void) EV_THROW
758{ 1291{
759#if EV_USE_REALTIME 1292#if EV_USE_REALTIME
760 if (expect_true (have_realtime)) 1293 if (expect_true (have_realtime))
761 { 1294 {
762 struct timespec ts; 1295 struct timespec ts;
… …
786 return ev_time (); 1319 return ev_time ();
787} 1320}
788 1321
789#if EV_MULTIPLICITY 1322#if EV_MULTIPLICITY
790ev_tstamp 1323ev_tstamp
791ev_now (EV_P) 1324ev_now (EV_P) EV_THROW
792{ 1325{
793 return ev_rt_now; 1326 return ev_rt_now;
794} 1327}
795#endif 1328#endif
796 1329
797void 1330void
798ev_sleep (ev_tstamp delay) 1331ev_sleep (ev_tstamp delay) EV_THROW
799{ 1332{
800 if (delay > 0.) 1333 if (delay > 0.)
801 { 1334 {
802#if EV_USE_NANOSLEEP 1335#if EV_USE_NANOSLEEP
803 struct timespec ts; 1336 struct timespec ts;
804 1337
805 EV_TS_SET (ts, delay); 1338 EV_TS_SET (ts, delay);
806 nanosleep (&ts, 0); 1339 nanosleep (&ts, 0);
807#elif defined(_WIN32) 1340#elif defined _WIN32
808 Sleep ((unsigned long)(delay * 1e3)); 1341 Sleep ((unsigned long)(delay * 1e3));
809#else 1342#else
810 struct timeval tv; 1343 struct timeval tv;
811 1344
812 /* here we rely on sys/time.h + sys/types.h + unistd.h providing select */ 1345 /* here we rely on sys/time.h + sys/types.h + unistd.h providing select */
… …
816 select (0, 0, 0, 0, &tv); 1349 select (0, 0, 0, 0, &tv);
817#endif 1350#endif
818 } 1351 }
819} 1352}
820 1353
821inline_speed int
822ev_timeout_to_ms (ev_tstamp timeout)
823{
824 int ms = timeout * 1000. + .999999;
825
826 return expect_true (ms) ? ms : timeout < 1e-6 ? 0 : 1;
827}
828
829/*****************************************************************************/ 1354/*****************************************************************************/
830 1355
831#define MALLOC_ROUND 4096 /* prefer to allocate in chunks of this size, must be 2**n and >> 4 longs */ 1356#define MALLOC_ROUND 4096 /* prefer to allocate in chunks of this size, must be 2**n and >> 4 longs */
832 1357
833/* find a suitable new size for the given array, */ 1358/* find a suitable new size for the given array, */
… …
839 1364
840 do 1365 do
841 ncur <<= 1; 1366 ncur <<= 1;
842 while (cnt > ncur); 1367 while (cnt > ncur);
843 1368
844 /* if size is large, round to MALLOC_ROUND - 4 * longs to accomodate malloc overhead */ 1369 /* if size is large, round to MALLOC_ROUND - 4 * longs to accommodate malloc overhead */
845 if (elem * ncur > MALLOC_ROUND - sizeof (void *) * 4) 1370 if (elem * ncur > MALLOC_ROUND - sizeof (void *) * 4)
846 { 1371 {
847 ncur *= elem; 1372 ncur *= elem;
848 ncur = (ncur + elem + (MALLOC_ROUND - 1) + sizeof (void *) * 4) & ~(MALLOC_ROUND - 1); 1373 ncur = (ncur + elem + (MALLOC_ROUND - 1) + sizeof (void *) * 4) & ~(MALLOC_ROUND - 1);
849 ncur = ncur - sizeof (void *) * 4; 1374 ncur = ncur - sizeof (void *) * 4;
… …
851 } 1376 }
852 1377
853 return ncur; 1378 return ncur;
854} 1379}
855 1380
856static noinline void * 1381static void * noinline ecb_cold
857array_realloc (int elem, void *base, int *cur, int cnt) 1382array_realloc (int elem, void *base, int *cur, int cnt)
858{ 1383{
859 *cur = array_nextsize (elem, *cur, cnt); 1384 *cur = array_nextsize (elem, *cur, cnt);
860 return ev_realloc (base, elem * *cur); 1385 return ev_realloc (base, elem * *cur);
861} 1386}
… …
864 memset ((void *)(base), 0, sizeof (*(base)) * (count)) 1389 memset ((void *)(base), 0, sizeof (*(base)) * (count))
865 1390
866#define array_needsize(type,base,cur,cnt,init) \ 1391#define array_needsize(type,base,cur,cnt,init) \
867 if (expect_false ((cnt) > (cur))) \ 1392 if (expect_false ((cnt) > (cur))) \
868 { \ 1393 { \
869 int ocur_ = (cur); \ 1394 int ecb_unused ocur_ = (cur); \
870 (base) = (type *)array_realloc \ 1395 (base) = (type *)array_realloc \
871 (sizeof (type), (base), &(cur), (cnt)); \ 1396 (sizeof (type), (base), &(cur), (cnt)); \
872 init ((base) + (ocur_), (cur) - ocur_); \ 1397 init ((base) + (ocur_), (cur) - ocur_); \
873 } 1398 }
874 1399
… …
892pendingcb (EV_P_ ev_prepare *w, int revents) 1417pendingcb (EV_P_ ev_prepare *w, int revents)
893{ 1418{
894} 1419}
895 1420
896void noinline 1421void noinline
897ev_feed_event (EV_P_ void *w, int revents) 1422ev_feed_event (EV_P_ void *w, int revents) EV_THROW
898{ 1423{
899 W w_ = (W)w; 1424 W w_ = (W)w;
900 int pri = ABSPRI (w_); 1425 int pri = ABSPRI (w_);
901 1426
902 if (expect_false (w_->pending)) 1427 if (expect_false (w_->pending))
… …
906 w_->pending = ++pendingcnt [pri]; 1431 w_->pending = ++pendingcnt [pri];
907 array_needsize (ANPENDING, pendings [pri], pendingmax [pri], w_->pending, EMPTY2); 1432 array_needsize (ANPENDING, pendings [pri], pendingmax [pri], w_->pending, EMPTY2);
908 pendings [pri][w_->pending - 1].w = w_; 1433 pendings [pri][w_->pending - 1].w = w_;
909 pendings [pri][w_->pending - 1].events = revents; 1434 pendings [pri][w_->pending - 1].events = revents;
910 } 1435 }
1436
1437 pendingpri = NUMPRI - 1;
911} 1438}
912 1439
913inline_speed void 1440inline_speed void
914feed_reverse (EV_P_ W w) 1441feed_reverse (EV_P_ W w)
915{ 1442{
… …
961 if (expect_true (!anfd->reify)) 1488 if (expect_true (!anfd->reify))
962 fd_event_nocheck (EV_A_ fd, revents); 1489 fd_event_nocheck (EV_A_ fd, revents);
963} 1490}
964 1491
965void 1492void
966ev_feed_fd_event (EV_P_ int fd, int revents) 1493ev_feed_fd_event (EV_P_ int fd, int revents) EV_THROW
967{ 1494{
968 if (fd >= 0 && fd < anfdmax) 1495 if (fd >= 0 && fd < anfdmax)
969 fd_event_nocheck (EV_A_ fd, revents); 1496 fd_event_nocheck (EV_A_ fd, revents);
970} 1497}
971 1498
… …
980 for (i = 0; i < fdchangecnt; ++i) 1507 for (i = 0; i < fdchangecnt; ++i)
981 { 1508 {
982 int fd = fdchanges [i]; 1509 int fd = fdchanges [i];
983 ANFD *anfd = anfds + fd; 1510 ANFD *anfd = anfds + fd;
984 1511
985 if (anfd->reify & EV__IOFDSET) 1512 if (anfd->reify & EV__IOFDSET && anfd->head)
986 { 1513 {
987 SOCKET handle = EV_FD_TO_WIN32_HANDLE (fd); 1514 SOCKET handle = EV_FD_TO_WIN32_HANDLE (fd);
988 1515
989 if (handle != anfd->handle) 1516 if (handle != anfd->handle)
990 { 1517 {
… …
1044 fdchanges [fdchangecnt - 1] = fd; 1571 fdchanges [fdchangecnt - 1] = fd;
1045 } 1572 }
1046} 1573}
1047 1574
1048/* the given fd is invalid/unusable, so make sure it doesn't hurt us anymore */ 1575/* the given fd is invalid/unusable, so make sure it doesn't hurt us anymore */
1049inline_speed void 1576inline_speed void ecb_cold
1050fd_kill (EV_P_ int fd) 1577fd_kill (EV_P_ int fd)
1051{ 1578{
1052 ev_io *w; 1579 ev_io *w;
1053 1580
1054 while ((w = (ev_io *)anfds [fd].head)) 1581 while ((w = (ev_io *)anfds [fd].head))
… …
1057 ev_feed_event (EV_A_ (W)w, EV_ERROR | EV_READ | EV_WRITE); 1584 ev_feed_event (EV_A_ (W)w, EV_ERROR | EV_READ | EV_WRITE);
1058 } 1585 }
1059} 1586}
1060 1587
1061/* check whether the given fd is actually valid, for error recovery */ 1588/* check whether the given fd is actually valid, for error recovery */
1062inline_size int 1589inline_size int ecb_cold
1063fd_valid (int fd) 1590fd_valid (int fd)
1064{ 1591{
1065#ifdef _WIN32 1592#ifdef _WIN32
1066 return EV_FD_TO_WIN32_HANDLE (fd) != -1; 1593 return EV_FD_TO_WIN32_HANDLE (fd) != -1;
1067#else 1594#else
1068 return fcntl (fd, F_GETFD) != -1; 1595 return fcntl (fd, F_GETFD) != -1;
1069#endif 1596#endif
1070} 1597}
1071 1598
1072/* called on EBADF to verify fds */ 1599/* called on EBADF to verify fds */
1073static void noinline 1600static void noinline ecb_cold
1074fd_ebadf (EV_P) 1601fd_ebadf (EV_P)
1075{ 1602{
1076 int fd; 1603 int fd;
1077 1604
1078 for (fd = 0; fd < anfdmax; ++fd) 1605 for (fd = 0; fd < anfdmax; ++fd)
… …
1080 if (!fd_valid (fd) && errno == EBADF) 1607 if (!fd_valid (fd) && errno == EBADF)
1081 fd_kill (EV_A_ fd); 1608 fd_kill (EV_A_ fd);
1082} 1609}
1083 1610
1084/* called on ENOMEM in select/poll to kill some fds and retry */ 1611/* called on ENOMEM in select/poll to kill some fds and retry */
1085static void noinline 1612static void noinline ecb_cold
1086fd_enomem (EV_P) 1613fd_enomem (EV_P)
1087{ 1614{
1088 int fd; 1615 int fd;
1089 1616
1090 for (fd = anfdmax; fd--; ) 1617 for (fd = anfdmax; fd--; )
… …
1285 1812
1286/*****************************************************************************/ 1813/*****************************************************************************/
1287 1814
1288#if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE 1815#if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE
1289 1816
1290static void noinline 1817static void noinline ecb_cold
1291evpipe_init (EV_P) 1818evpipe_init (EV_P)
1292{ 1819{
1293 if (!ev_is_active (&pipe_w)) 1820 if (!ev_is_active (&pipe_w))
1294 { 1821 {
1295# if EV_USE_EVENTFD 1822# if EV_USE_EVENTFD
… …
1317 ev_io_start (EV_A_ &pipe_w); 1844 ev_io_start (EV_A_ &pipe_w);
1318 ev_unref (EV_A); /* watcher should not keep loop alive */ 1845 ev_unref (EV_A); /* watcher should not keep loop alive */
1319 } 1846 }
1320} 1847}
1321 1848
1322inline_size void 1849inline_speed void
1323evpipe_write (EV_P_ EV_ATOMIC_T *flag) 1850evpipe_write (EV_P_ EV_ATOMIC_T *flag)
1324{ 1851{
1325 if (!*flag) 1852 ECB_MEMORY_FENCE; /* push out the write before this function was called, acquire flag */
1853
1854 if (expect_true (*flag))
1855 return;
1856
1857 *flag = 1;
1858
1859 ECB_MEMORY_FENCE_RELEASE; /* make sure flag is visible before the wakeup */
1860
1861 pipe_write_skipped = 1;
1862
1863 ECB_MEMORY_FENCE; /* make sure pipe_write_skipped is visible before we check pipe_write_wanted */
1864
1865 if (pipe_write_wanted)
1326 { 1866 {
1867 int old_errno;
1868
1869 pipe_write_skipped = 0; /* just an optimisation, no fence needed */
1870
1327 int old_errno = errno; /* save errno because write might clobber it */ 1871 old_errno = errno; /* save errno because write will clobber it */
1328 char dummy;
1329
1330 *flag = 1;
1331 1872
1332#if EV_USE_EVENTFD 1873#if EV_USE_EVENTFD
1333 if (evfd >= 0) 1874 if (evfd >= 0)
1334 { 1875 {
1335 uint64_t counter = 1; 1876 uint64_t counter = 1;
1336 write (evfd, &counter, sizeof (uint64_t)); 1877 write (evfd, &counter, sizeof (uint64_t));
1337 } 1878 }
1338 else 1879 else
1339#endif 1880#endif
1340 /* win32 people keep sending patches that change this write() to send() */ 1881 {
1341 /* and then run away. but send() is wrong, it wants a socket handle on win32 */ 1882#ifdef _WIN32
1342 /* so when you think this write should be a send instead, please find out */ 1883 WSABUF buf;
1343 /* where your send() is from - it's definitely not the microsoft send, and */ 1884 DWORD sent;
1344 /* tell me. thank you. */ 1885 buf.buf = &buf;
1886 buf.len = 1;
1887 WSASend (EV_FD_TO_WIN32_HANDLE (evpipe [1]), &buf, 1, &sent, 0, 0, 0);
1888#else
1345 write (evpipe [1], &dummy, 1); 1889 write (evpipe [1], &(evpipe [1]), 1);
1890#endif
1891 }
1346 1892
1347 errno = old_errno; 1893 errno = old_errno;
1348 } 1894 }
1349} 1895}
1350 1896
… …
1353static void 1899static void
1354pipecb (EV_P_ ev_io *iow, int revents) 1900pipecb (EV_P_ ev_io *iow, int revents)
1355{ 1901{
1356 int i; 1902 int i;
1357 1903
1904 if (revents & EV_READ)
1905 {
1358#if EV_USE_EVENTFD 1906#if EV_USE_EVENTFD
1359 if (evfd >= 0) 1907 if (evfd >= 0)
1360 { 1908 {
1361 uint64_t counter; 1909 uint64_t counter;
1362 read (evfd, &counter, sizeof (uint64_t)); 1910 read (evfd, &counter, sizeof (uint64_t));
1363 } 1911 }
1364 else 1912 else
1365#endif 1913#endif
1366 { 1914 {
1367 char dummy; 1915 char dummy[4];
1368 /* see discussion in evpipe_write when you think this read should be recv in win32 */ 1916#ifdef _WIN32
1917 WSABUF buf;
1918 DWORD recvd;
1919 buf.buf = dummy;
1920 buf.len = sizeof (dummy);
1921 WSARecv (EV_FD_TO_WIN32_HANDLE (evpipe [0]), &buf, 1, &recvd, 0, 0, 0);
1922#else
1369 read (evpipe [0], &dummy, 1); 1923 read (evpipe [0], &dummy, sizeof (dummy));
1924#endif
1925 }
1370 } 1926 }
1927
1928 pipe_write_skipped = 0;
1929
1930 ECB_MEMORY_FENCE; /* push out skipped, acquire flags */
1371 1931
1372#if EV_SIGNAL_ENABLE 1932#if EV_SIGNAL_ENABLE
1373 if (sig_pending) 1933 if (sig_pending)
1374 { 1934 {
1375 sig_pending = 0; 1935 sig_pending = 0;
1936
1937 ECB_MEMORY_FENCE_RELEASE;
1376 1938
1377 for (i = EV_NSIG - 1; i--; ) 1939 for (i = EV_NSIG - 1; i--; )
1378 if (expect_false (signals [i].pending)) 1940 if (expect_false (signals [i].pending))
1379 ev_feed_signal_event (EV_A_ i + 1); 1941 ev_feed_signal_event (EV_A_ i + 1);
1380 } 1942 }
… …
1382 1944
1383#if EV_ASYNC_ENABLE 1945#if EV_ASYNC_ENABLE
1384 if (async_pending) 1946 if (async_pending)
1385 { 1947 {
1386 async_pending = 0; 1948 async_pending = 0;
1949
1950 ECB_MEMORY_FENCE_RELEASE;
1387 1951
1388 for (i = asynccnt; i--; ) 1952 for (i = asynccnt; i--; )
1389 if (asyncs [i]->sent) 1953 if (asyncs [i]->sent)
1390 { 1954 {
1391 asyncs [i]->sent = 0; 1955 asyncs [i]->sent = 0;
… …
1396} 1960}
1397 1961
1398/*****************************************************************************/ 1962/*****************************************************************************/
1399 1963
1400void 1964void
1401ev_feed_signal (int signum) 1965ev_feed_signal (int signum) EV_THROW
1402{ 1966{
1403#if EV_MULTIPLICITY 1967#if EV_MULTIPLICITY
1404 EV_P = signals [signum - 1].loop; 1968 EV_P = signals [signum - 1].loop;
1405 1969
1406 if (!EV_A) 1970 if (!EV_A)
1407 return; 1971 return;
1408#endif 1972#endif
1409 1973
1974 if (!ev_active (&pipe_w))
1975 return;
1976
1410 signals [signum - 1].pending = 1; 1977 signals [signum - 1].pending = 1;
1411 evpipe_write (EV_A_ &sig_pending); 1978 evpipe_write (EV_A_ &sig_pending);
1412} 1979}
1413 1980
1414static void 1981static void
… …
1420 1987
1421 ev_feed_signal (signum); 1988 ev_feed_signal (signum);
1422} 1989}
1423 1990
1424void noinline 1991void noinline
1425ev_feed_signal_event (EV_P_ int signum) 1992ev_feed_signal_event (EV_P_ int signum) EV_THROW
1426{ 1993{
1427 WL w; 1994 WL w;
1428 1995
1429 if (expect_false (signum <= 0 || signum > EV_NSIG)) 1996 if (expect_false (signum <= 0 || signum > EV_NSIG))
1430 return; 1997 return;
… …
1545#endif 2112#endif
1546#if EV_USE_SELECT 2113#if EV_USE_SELECT
1547# include "ev_select.c" 2114# include "ev_select.c"
1548#endif 2115#endif
1549 2116
1550int 2117int ecb_cold
1551ev_version_major (void) 2118ev_version_major (void) EV_THROW
1552{ 2119{
1553 return EV_VERSION_MAJOR; 2120 return EV_VERSION_MAJOR;
1554} 2121}
1555 2122
1556int 2123int ecb_cold
1557ev_version_minor (void) 2124ev_version_minor (void) EV_THROW
1558{ 2125{
1559 return EV_VERSION_MINOR; 2126 return EV_VERSION_MINOR;
1560} 2127}
1561 2128
1562/* return true if we are running with elevated privileges and should ignore env variables */ 2129/* return true if we are running with elevated privileges and should ignore env variables */
1563int inline_size 2130int inline_size ecb_cold
1564enable_secure (void) 2131enable_secure (void)
1565{ 2132{
1566#ifdef _WIN32 2133#ifdef _WIN32
1567 return 0; 2134 return 0;
1568#else 2135#else
1569 return getuid () != geteuid () 2136 return getuid () != geteuid ()
1570 || getgid () != getegid (); 2137 || getgid () != getegid ();
1571#endif 2138#endif
1572} 2139}
1573 2140
1574unsigned int 2141unsigned int ecb_cold
1575ev_supported_backends (void) 2142ev_supported_backends (void) EV_THROW
1576{ 2143{
1577 unsigned int flags = 0; 2144 unsigned int flags = 0;
1578 2145
1579 if (EV_USE_PORT ) flags |= EVBACKEND_PORT; 2146 if (EV_USE_PORT ) flags |= EVBACKEND_PORT;
1580 if (EV_USE_KQUEUE) flags |= EVBACKEND_KQUEUE; 2147 if (EV_USE_KQUEUE) flags |= EVBACKEND_KQUEUE;
… …
1583 if (EV_USE_SELECT) flags |= EVBACKEND_SELECT; 2150 if (EV_USE_SELECT) flags |= EVBACKEND_SELECT;
1584 2151
1585 return flags; 2152 return flags;
1586} 2153}
1587 2154
1588unsigned int 2155unsigned int ecb_cold
1589ev_recommended_backends (void) 2156ev_recommended_backends (void) EV_THROW
1590{ 2157{
1591 unsigned int flags = ev_supported_backends (); 2158 unsigned int flags = ev_supported_backends ();
1592 2159
1593#ifndef __NetBSD__ 2160#ifndef __NetBSD__
1594 /* kqueue is borked on everything but netbsd apparently */ 2161 /* kqueue is borked on everything but netbsd apparently */
… …
1605#endif 2172#endif
1606 2173
1607 return flags; 2174 return flags;
1608} 2175}
1609 2176
1610unsigned int 2177unsigned int ecb_cold
1611ev_embeddable_backends (void) 2178ev_embeddable_backends (void) EV_THROW
1612{ 2179{
1613 int flags = EVBACKEND_EPOLL | EVBACKEND_KQUEUE | EVBACKEND_PORT; 2180 int flags = EVBACKEND_EPOLL | EVBACKEND_KQUEUE | EVBACKEND_PORT;
1614 2181
1615 /* epoll embeddability broken on all linux versions up to at least 2.6.23 */ 2182 /* epoll embeddability broken on all linux versions up to at least 2.6.23 */
1616 if (ev_linux_version () < 0x020620) /* disable it on linux < 2.6.32 */ 2183 if (ev_linux_version () < 0x020620) /* disable it on linux < 2.6.32 */
… …
1618 2185
1619 return flags; 2186 return flags;
1620} 2187}
1621 2188
1622unsigned int 2189unsigned int
1623ev_backend (EV_P) 2190ev_backend (EV_P) EV_THROW
1624{ 2191{
1625 return backend; 2192 return backend;
1626} 2193}
1627 2194
1628#if EV_FEATURE_API 2195#if EV_FEATURE_API
1629unsigned int 2196unsigned int
1630ev_iteration (EV_P) 2197ev_iteration (EV_P) EV_THROW
1631{ 2198{
1632 return loop_count; 2199 return loop_count;
1633} 2200}
1634 2201
1635unsigned int 2202unsigned int
1636ev_depth (EV_P) 2203ev_depth (EV_P) EV_THROW
1637{ 2204{
1638 return loop_depth; 2205 return loop_depth;
1639} 2206}
1640 2207
1641void 2208void
1642ev_set_io_collect_interval (EV_P_ ev_tstamp interval) 2209ev_set_io_collect_interval (EV_P_ ev_tstamp interval) EV_THROW
1643{ 2210{
1644 io_blocktime = interval; 2211 io_blocktime = interval;
1645} 2212}
1646 2213
1647void 2214void
1648ev_set_timeout_collect_interval (EV_P_ ev_tstamp interval) 2215ev_set_timeout_collect_interval (EV_P_ ev_tstamp interval) EV_THROW
1649{ 2216{
1650 timeout_blocktime = interval; 2217 timeout_blocktime = interval;
1651} 2218}
1652 2219
1653void 2220void
1654ev_set_userdata (EV_P_ void *data) 2221ev_set_userdata (EV_P_ void *data) EV_THROW
1655{ 2222{
1656 userdata = data; 2223 userdata = data;
1657} 2224}
1658 2225
1659void * 2226void *
1660ev_userdata (EV_P) 2227ev_userdata (EV_P) EV_THROW
1661{ 2228{
1662 return userdata; 2229 return userdata;
1663} 2230}
1664 2231
2232void
1665void ev_set_invoke_pending_cb (EV_P_ void (*invoke_pending_cb)(EV_P)) 2233ev_set_invoke_pending_cb (EV_P_ void (*invoke_pending_cb)(EV_P)) EV_THROW
1666{ 2234{
1667 invoke_cb = invoke_pending_cb; 2235 invoke_cb = invoke_pending_cb;
1668} 2236}
1669 2237
2238void
1670void ev_set_loop_release_cb (EV_P_ void (*release)(EV_P), void (*acquire)(EV_P)) 2239ev_set_loop_release_cb (EV_P_ void (*release)(EV_P) EV_THROW, void (*acquire)(EV_P) EV_THROW) EV_THROW
1671{ 2240{
1672 release_cb = release; 2241 release_cb = release;
1673 acquire_cb = acquire; 2242 acquire_cb = acquire;
1674} 2243}
1675#endif 2244#endif
1676 2245
1677/* initialise a loop structure, must be zero-initialised */ 2246/* initialise a loop structure, must be zero-initialised */
1678static void noinline 2247static void noinline ecb_cold
1679loop_init (EV_P_ unsigned int flags) 2248loop_init (EV_P_ unsigned int flags) EV_THROW
1680{ 2249{
1681 if (!backend) 2250 if (!backend)
1682 { 2251 {
1683 origflags = flags; 2252 origflags = flags;
1684 2253
… …
1711 if (!(flags & EVFLAG_NOENV) 2280 if (!(flags & EVFLAG_NOENV)
1712 && !enable_secure () 2281 && !enable_secure ()
1713 && getenv ("LIBEV_FLAGS")) 2282 && getenv ("LIBEV_FLAGS"))
1714 flags = atoi (getenv ("LIBEV_FLAGS")); 2283 flags = atoi (getenv ("LIBEV_FLAGS"));
1715 2284
1716 ev_rt_now = ev_time (); 2285 ev_rt_now = ev_time ();
1717 mn_now = get_clock (); 2286 mn_now = get_clock ();
1718 now_floor = mn_now; 2287 now_floor = mn_now;
1719 rtmn_diff = ev_rt_now - mn_now; 2288 rtmn_diff = ev_rt_now - mn_now;
1720#if EV_FEATURE_API 2289#if EV_FEATURE_API
1721 invoke_cb = ev_invoke_pending; 2290 invoke_cb = ev_invoke_pending;
1722#endif 2291#endif
1723 2292
1724 io_blocktime = 0.; 2293 io_blocktime = 0.;
1725 timeout_blocktime = 0.; 2294 timeout_blocktime = 0.;
1726 backend = 0; 2295 backend = 0;
1727 backend_fd = -1; 2296 backend_fd = -1;
1728 sig_pending = 0; 2297 sig_pending = 0;
1729#if EV_ASYNC_ENABLE 2298#if EV_ASYNC_ENABLE
1730 async_pending = 0; 2299 async_pending = 0;
1731#endif 2300#endif
2301 pipe_write_skipped = 0;
2302 pipe_write_wanted = 0;
1732#if EV_USE_INOTIFY 2303#if EV_USE_INOTIFY
1733 fs_fd = flags & EVFLAG_NOINOTIFY ? -1 : -2; 2304 fs_fd = flags & EVFLAG_NOINOTIFY ? -1 : -2;
1734#endif 2305#endif
1735#if EV_USE_SIGNALFD 2306#if EV_USE_SIGNALFD
1736 sigfd = flags & EVFLAG_SIGNALFD ? -2 : -1; 2307 sigfd = flags & EVFLAG_SIGNALFD ? -2 : -1;
1737#endif 2308#endif
1738 2309
1739 if (!(flags & EVBACKEND_MASK)) 2310 if (!(flags & EVBACKEND_MASK))
1740 flags |= ev_recommended_backends (); 2311 flags |= ev_recommended_backends ();
1741 2312
… …
1766#endif 2337#endif
1767 } 2338 }
1768} 2339}
1769 2340
1770/* free up a loop structure */ 2341/* free up a loop structure */
1771void 2342void ecb_cold
1772ev_loop_destroy (EV_P) 2343ev_loop_destroy (EV_P)
1773{ 2344{
1774 int i; 2345 int i;
1775 2346
1776#if EV_MULTIPLICITY 2347#if EV_MULTIPLICITY
… …
1906 infy_fork (EV_A); 2477 infy_fork (EV_A);
1907#endif 2478#endif
1908 2479
1909 if (ev_is_active (&pipe_w)) 2480 if (ev_is_active (&pipe_w))
1910 { 2481 {
1911 /* this "locks" the handlers against writing to the pipe */ 2482 /* pipe_write_wanted must be false now, so modifying fd vars should be safe */
1912 /* while we modify the fd vars */
1913 sig_pending = 1;
1914#if EV_ASYNC_ENABLE
1915 async_pending = 1;
1916#endif
1917 2483
1918 ev_ref (EV_A); 2484 ev_ref (EV_A);
1919 ev_io_stop (EV_A_ &pipe_w); 2485 ev_io_stop (EV_A_ &pipe_w);
1920 2486
1921#if EV_USE_EVENTFD 2487#if EV_USE_EVENTFD
… …
1939 postfork = 0; 2505 postfork = 0;
1940} 2506}
1941 2507
1942#if EV_MULTIPLICITY 2508#if EV_MULTIPLICITY
1943 2509
1944struct ev_loop * 2510struct ev_loop * ecb_cold
1945ev_loop_new (unsigned int flags) 2511ev_loop_new (unsigned int flags) EV_THROW
1946{ 2512{
1947 EV_P = (struct ev_loop *)ev_malloc (sizeof (struct ev_loop)); 2513 EV_P = (struct ev_loop *)ev_malloc (sizeof (struct ev_loop));
1948 2514
1949 memset (EV_A, 0, sizeof (struct ev_loop)); 2515 memset (EV_A, 0, sizeof (struct ev_loop));
1950 loop_init (EV_A_ flags); 2516 loop_init (EV_A_ flags);
… …
1957} 2523}
1958 2524
1959#endif /* multiplicity */ 2525#endif /* multiplicity */
1960 2526
1961#if EV_VERIFY 2527#if EV_VERIFY
1962static void noinline 2528static void noinline ecb_cold
1963verify_watcher (EV_P_ W w) 2529verify_watcher (EV_P_ W w)
1964{ 2530{
1965 assert (("libev: watcher has invalid priority", ABSPRI (w) >= 0 && ABSPRI (w) < NUMPRI)); 2531 assert (("libev: watcher has invalid priority", ABSPRI (w) >= 0 && ABSPRI (w) < NUMPRI));
1966 2532
1967 if (w->pending) 2533 if (w->pending)
1968 assert (("libev: pending watcher not on pending queue", pendings [ABSPRI (w)][w->pending - 1].w == w)); 2534 assert (("libev: pending watcher not on pending queue", pendings [ABSPRI (w)][w->pending - 1].w == w));
1969} 2535}
1970 2536
1971static void noinline 2537static void noinline ecb_cold
1972verify_heap (EV_P_ ANHE *heap, int N) 2538verify_heap (EV_P_ ANHE *heap, int N)
1973{ 2539{
1974 int i; 2540 int i;
1975 2541
1976 for (i = HEAP0; i < N + HEAP0; ++i) 2542 for (i = HEAP0; i < N + HEAP0; ++i)
… …
1981 2547
1982 verify_watcher (EV_A_ (W)ANHE_w (heap [i])); 2548 verify_watcher (EV_A_ (W)ANHE_w (heap [i]));
1983 } 2549 }
1984} 2550}
1985 2551
1986static void noinline 2552static void noinline ecb_cold
1987array_verify (EV_P_ W *ws, int cnt) 2553array_verify (EV_P_ W *ws, int cnt)
1988{ 2554{
1989 while (cnt--) 2555 while (cnt--)
1990 { 2556 {
1991 assert (("libev: active index mismatch", ev_active (ws [cnt]) == cnt + 1)); 2557 assert (("libev: active index mismatch", ev_active (ws [cnt]) == cnt + 1));
… …
1993 } 2559 }
1994} 2560}
1995#endif 2561#endif
1996 2562
1997#if EV_FEATURE_API 2563#if EV_FEATURE_API
1998void 2564void ecb_cold
1999ev_verify (EV_P) 2565ev_verify (EV_P) EV_THROW
2000{ 2566{
2001#if EV_VERIFY 2567#if EV_VERIFY
2002 int i; 2568 int i, j;
2003 WL w; 2569 WL w, w2;
2004 2570
2005 assert (activecnt >= -1); 2571 assert (activecnt >= -1);
2006 2572
2007 assert (fdchangemax >= fdchangecnt); 2573 assert (fdchangemax >= fdchangecnt);
2008 for (i = 0; i < fdchangecnt; ++i) 2574 for (i = 0; i < fdchangecnt; ++i)
2009 assert (("libev: negative fd in fdchanges", fdchanges [i] >= 0)); 2575 assert (("libev: negative fd in fdchanges", fdchanges [i] >= 0));
2010 2576
2011 assert (anfdmax >= 0); 2577 assert (anfdmax >= 0);
2012 for (i = 0; i < anfdmax; ++i) 2578 for (i = j = 0; i < anfdmax; ++i)
2013 for (w = anfds [i].head; w; w = w->next) 2579 for (w = w2 = anfds [i].head; w; w = w->next)
2014 { 2580 {
2015 verify_watcher (EV_A_ (W)w); 2581 verify_watcher (EV_A_ (W)w);
2582
2583 if (j++ & 1)
2584 {
2585 assert (("libev: io watcher list contains a loop", w != w2));
2586 w2 = w2->next;
2587 }
2588
2016 assert (("libev: inactive fd watcher on anfd list", ev_active (w) == 1)); 2589 assert (("libev: inactive fd watcher on anfd list", ev_active (w) == 1));
2017 assert (("libev: fd mismatch between watcher and anfd", ((ev_io *)w)->fd == i)); 2590 assert (("libev: fd mismatch between watcher and anfd", ((ev_io *)w)->fd == i));
2018 } 2591 }
2019 2592
2020 assert (timermax >= timercnt); 2593 assert (timermax >= timercnt);
… …
2069#endif 2642#endif
2070} 2643}
2071#endif 2644#endif
2072 2645
2073#if EV_MULTIPLICITY 2646#if EV_MULTIPLICITY
2074struct ev_loop * 2647struct ev_loop * ecb_cold
2075#else 2648#else
2076int 2649int
2077#endif 2650#endif
2078ev_default_loop (unsigned int flags) 2651ev_default_loop (unsigned int flags) EV_THROW
2079{ 2652{
2080 if (!ev_default_loop_ptr) 2653 if (!ev_default_loop_ptr)
2081 { 2654 {
2082#if EV_MULTIPLICITY 2655#if EV_MULTIPLICITY
2083 EV_P = ev_default_loop_ptr = &default_loop_struct; 2656 EV_P = ev_default_loop_ptr = &default_loop_struct;
… …
2102 2675
2103 return ev_default_loop_ptr; 2676 return ev_default_loop_ptr;
2104} 2677}
2105 2678
2106void 2679void
2107ev_loop_fork (EV_P) 2680ev_loop_fork (EV_P) EV_THROW
2108{ 2681{
2109 postfork = 1; /* must be in line with ev_default_fork */ 2682 postfork = 1; /* must be in line with ev_default_fork */
2110} 2683}
2111 2684
2112/*****************************************************************************/ 2685/*****************************************************************************/
… …
2116{ 2689{
2117 EV_CB_INVOKE ((W)w, revents); 2690 EV_CB_INVOKE ((W)w, revents);
2118} 2691}
2119 2692
2120unsigned int 2693unsigned int
2121ev_pending_count (EV_P) 2694ev_pending_count (EV_P) EV_THROW
2122{ 2695{
2123 int pri; 2696 int pri;
2124 unsigned int count = 0; 2697 unsigned int count = 0;
2125 2698
2126 for (pri = NUMPRI; pri--; ) 2699 for (pri = NUMPRI; pri--; )
… …
2130} 2703}
2131 2704
2132void noinline 2705void noinline
2133ev_invoke_pending (EV_P) 2706ev_invoke_pending (EV_P)
2134{ 2707{
2135 int pri; 2708 for (pendingpri = NUMPRI; pendingpri--; ) /* pendingpri is modified during the loop */
2136
2137 for (pri = NUMPRI; pri--; )
2138 while (pendingcnt [pri]) 2709 while (pendingcnt [pendingpri])
2139 { 2710 {
2140 ANPENDING *p = pendings [pri] + --pendingcnt [pri]; 2711 ANPENDING *p = pendings [pendingpri] + --pendingcnt [pendingpri];
2141 2712
2142 p->w->pending = 0; 2713 p->w->pending = 0;
2143 EV_CB_INVOKE (p->w, p->events); 2714 EV_CB_INVOKE (p->w, p->events);
2144 EV_FREQUENT_CHECK; 2715 EV_FREQUENT_CHECK;
2145 } 2716 }
… …
2208 } 2779 }
2209} 2780}
2210 2781
2211#if EV_PERIODIC_ENABLE 2782#if EV_PERIODIC_ENABLE
2212 2783
2213inline_speed void 2784static void noinline
2214periodic_recalc (EV_P_ ev_periodic *w) 2785periodic_recalc (EV_P_ ev_periodic *w)
2215{ 2786{
2216 /* TODO: use slow but potentially more correct incremental algo, */ 2787 ev_tstamp interval = w->interval > MIN_INTERVAL ? w->interval : MIN_INTERVAL;
2217 /* also do not rely on ceil */ 2788 ev_tstamp at = w->offset + interval * ev_floor ((ev_rt_now - w->offset) / interval);
2218 ev_at (w) = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval; 2789
2790 /* the above almost always errs on the low side */
2791 while (at <= ev_rt_now)
2792 {
2793 ev_tstamp nat = at + w->interval;
2794
2795 /* when resolution fails us, we use ev_rt_now */
2796 if (expect_false (nat == at))
2797 {
2798 at = ev_rt_now;
2799 break;
2800 }
2801
2802 at = nat;
2803 }
2804
2805 ev_at (w) = at;
2219} 2806}
2220 2807
2221/* make periodics pending */ 2808/* make periodics pending */
2222inline_size void 2809inline_size void
2223periodics_reify (EV_P) 2810periodics_reify (EV_P)
… …
2245 downheap (periodics, periodiccnt, HEAP0); 2832 downheap (periodics, periodiccnt, HEAP0);
2246 } 2833 }
2247 else if (w->interval) 2834 else if (w->interval)
2248 { 2835 {
2249 periodic_recalc (EV_A_ w); 2836 periodic_recalc (EV_A_ w);
2250
2251 /* if next trigger time is not sufficiently in the future, put it there */
2252 /* this might happen because of floating point inexactness */
2253 if (ev_at (w) - ev_rt_now < TIME_EPSILON)
2254 {
2255 ev_at (w) += w->interval;
2256
2257 /* if interval is unreasonably low we might still have a time in the past */
2258 /* so correct this. this will make the periodic very inexact, but the user */
2259 /* has effectively asked to get triggered more often than possible */
2260 if (ev_at (w) < ev_rt_now)
2261 ev_at (w) = ev_rt_now;
2262 }
2263
2264 ANHE_at_cache (periodics [HEAP0]); 2837 ANHE_at_cache (periodics [HEAP0]);
2265 downheap (periodics, periodiccnt, HEAP0); 2838 downheap (periodics, periodiccnt, HEAP0);
2266 } 2839 }
2267 else 2840 else
2268 ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */ 2841 ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */
… …
2276 } 2849 }
2277} 2850}
2278 2851
2279/* simply recalculate all periodics */ 2852/* simply recalculate all periodics */
2280/* TODO: maybe ensure that at least one event happens when jumping forward? */ 2853/* TODO: maybe ensure that at least one event happens when jumping forward? */
2281static void noinline 2854static void noinline ecb_cold
2282periodics_reschedule (EV_P) 2855periodics_reschedule (EV_P)
2283{ 2856{
2284 int i; 2857 int i;
2285 2858
2286 /* adjust periodics after time jump */ 2859 /* adjust periodics after time jump */
… …
2299 reheap (periodics, periodiccnt); 2872 reheap (periodics, periodiccnt);
2300} 2873}
2301#endif 2874#endif
2302 2875
2303/* adjust all timers by a given offset */ 2876/* adjust all timers by a given offset */
2304static void noinline 2877static void noinline ecb_cold
2305timers_reschedule (EV_P_ ev_tstamp adjust) 2878timers_reschedule (EV_P_ ev_tstamp adjust)
2306{ 2879{
2307 int i; 2880 int i;
2308 2881
2309 for (i = 0; i < timercnt; ++i) 2882 for (i = 0; i < timercnt; ++i)
… …
2346 * doesn't hurt either as we only do this on time-jumps or 2919 * doesn't hurt either as we only do this on time-jumps or
2347 * in the unlikely event of having been preempted here. 2920 * in the unlikely event of having been preempted here.
2348 */ 2921 */
2349 for (i = 4; --i; ) 2922 for (i = 4; --i; )
2350 { 2923 {
2924 ev_tstamp diff;
2351 rtmn_diff = ev_rt_now - mn_now; 2925 rtmn_diff = ev_rt_now - mn_now;
2352 2926
2927 diff = odiff - rtmn_diff;
2928
2353 if (expect_true (fabs (odiff - rtmn_diff) < MIN_TIMEJUMP)) 2929 if (expect_true ((diff < 0. ? -diff : diff) < MIN_TIMEJUMP))
2354 return; /* all is well */ 2930 return; /* all is well */
2355 2931
2356 ev_rt_now = ev_time (); 2932 ev_rt_now = ev_time ();
2357 mn_now = get_clock (); 2933 mn_now = get_clock ();
2358 now_floor = mn_now; 2934 now_floor = mn_now;
… …
2380 2956
2381 mn_now = ev_rt_now; 2957 mn_now = ev_rt_now;
2382 } 2958 }
2383} 2959}
2384 2960
2385void 2961int
2386ev_run (EV_P_ int flags) 2962ev_run (EV_P_ int flags)
2387{ 2963{
2388#if EV_FEATURE_API 2964#if EV_FEATURE_API
2389 ++loop_depth; 2965 ++loop_depth;
2390#endif 2966#endif
… …
2448 ev_tstamp prev_mn_now = mn_now; 3024 ev_tstamp prev_mn_now = mn_now;
2449 3025
2450 /* update time to cancel out callback processing overhead */ 3026 /* update time to cancel out callback processing overhead */
2451 time_update (EV_A_ 1e100); 3027 time_update (EV_A_ 1e100);
2452 3028
3029 /* from now on, we want a pipe-wake-up */
3030 pipe_write_wanted = 1;
3031
3032 ECB_MEMORY_FENCE; /* make sure pipe_write_wanted is visible before we check for potential skips */
3033
2453 if (expect_true (!(flags & EVRUN_NOWAIT || idleall || !activecnt))) 3034 if (expect_true (!(flags & EVRUN_NOWAIT || idleall || !activecnt || pipe_write_skipped)))
2454 { 3035 {
2455 waittime = MAX_BLOCKTIME; 3036 waittime = MAX_BLOCKTIME;
2456 3037
2457 if (timercnt) 3038 if (timercnt)
2458 { 3039 {
2459 ev_tstamp to = ANHE_at (timers [HEAP0]) - mn_now + backend_fudge; 3040 ev_tstamp to = ANHE_at (timers [HEAP0]) - mn_now;
2460 if (waittime > to) waittime = to; 3041 if (waittime > to) waittime = to;
2461 } 3042 }
2462 3043
2463#if EV_PERIODIC_ENABLE 3044#if EV_PERIODIC_ENABLE
2464 if (periodiccnt) 3045 if (periodiccnt)
2465 { 3046 {
2466 ev_tstamp to = ANHE_at (periodics [HEAP0]) - ev_rt_now + backend_fudge; 3047 ev_tstamp to = ANHE_at (periodics [HEAP0]) - ev_rt_now;
2467 if (waittime > to) waittime = to; 3048 if (waittime > to) waittime = to;
2468 } 3049 }
2469#endif 3050#endif
2470 3051
2471 /* don't let timeouts decrease the waittime below timeout_blocktime */ 3052 /* don't let timeouts decrease the waittime below timeout_blocktime */
2472 if (expect_false (waittime < timeout_blocktime)) 3053 if (expect_false (waittime < timeout_blocktime))
2473 waittime = timeout_blocktime; 3054 waittime = timeout_blocktime;
3055
3056 /* at this point, we NEED to wait, so we have to ensure */
3057 /* to pass a minimum nonzero value to the backend */
3058 if (expect_false (waittime < backend_mintime))
3059 waittime = backend_mintime;
2474 3060
2475 /* extra check because io_blocktime is commonly 0 */ 3061 /* extra check because io_blocktime is commonly 0 */
2476 if (expect_false (io_blocktime)) 3062 if (expect_false (io_blocktime))
2477 { 3063 {
2478 sleeptime = io_blocktime - (mn_now - prev_mn_now); 3064 sleeptime = io_blocktime - (mn_now - prev_mn_now);
2479 3065
2480 if (sleeptime > waittime - backend_fudge) 3066 if (sleeptime > waittime - backend_mintime)
2481 sleeptime = waittime - backend_fudge; 3067 sleeptime = waittime - backend_mintime;
2482 3068
2483 if (expect_true (sleeptime > 0.)) 3069 if (expect_true (sleeptime > 0.))
2484 { 3070 {
2485 ev_sleep (sleeptime); 3071 ev_sleep (sleeptime);
2486 waittime -= sleeptime; 3072 waittime -= sleeptime;
… …
2493#endif 3079#endif
2494 assert ((loop_done = EVBREAK_RECURSE, 1)); /* assert for side effect */ 3080 assert ((loop_done = EVBREAK_RECURSE, 1)); /* assert for side effect */
2495 backend_poll (EV_A_ waittime); 3081 backend_poll (EV_A_ waittime);
2496 assert ((loop_done = EVBREAK_CANCEL, 1)); /* assert for side effect */ 3082 assert ((loop_done = EVBREAK_CANCEL, 1)); /* assert for side effect */
2497 3083
3084 pipe_write_wanted = 0; /* just an optimisation, no fence needed */
3085
3086 if (pipe_write_skipped)
3087 {
3088 assert (("libev: pipe_w not active, but pipe not written", ev_is_active (&pipe_w)));
3089 ev_feed_event (EV_A_ &pipe_w, EV_CUSTOM);
3090 }
3091
3092
2498 /* update ev_rt_now, do magic */ 3093 /* update ev_rt_now, do magic */
2499 time_update (EV_A_ waittime + sleeptime); 3094 time_update (EV_A_ waittime + sleeptime);
2500 } 3095 }
2501 3096
2502 /* queue pending timers and reschedule them */ 3097 /* queue pending timers and reschedule them */
… …
2528 loop_done = EVBREAK_CANCEL; 3123 loop_done = EVBREAK_CANCEL;
2529 3124
2530#if EV_FEATURE_API 3125#if EV_FEATURE_API
2531 --loop_depth; 3126 --loop_depth;
2532#endif 3127#endif
3128
3129 return activecnt;
2533} 3130}
2534 3131
2535void 3132void
2536ev_break (EV_P_ int how) 3133ev_break (EV_P_ int how) EV_THROW
2537{ 3134{
2538 loop_done = how; 3135 loop_done = how;
2539} 3136}
2540 3137
2541void 3138void
2542ev_ref (EV_P) 3139ev_ref (EV_P) EV_THROW
2543{ 3140{
2544 ++activecnt; 3141 ++activecnt;
2545} 3142}
2546 3143
2547void 3144void
2548ev_unref (EV_P) 3145ev_unref (EV_P) EV_THROW
2549{ 3146{
2550 --activecnt; 3147 --activecnt;
2551} 3148}
2552 3149
2553void 3150void
2554ev_now_update (EV_P) 3151ev_now_update (EV_P) EV_THROW
2555{ 3152{
2556 time_update (EV_A_ 1e100); 3153 time_update (EV_A_ 1e100);
2557} 3154}
2558 3155
2559void 3156void
2560ev_suspend (EV_P) 3157ev_suspend (EV_P) EV_THROW
2561{ 3158{
2562 ev_now_update (EV_A); 3159 ev_now_update (EV_A);
2563} 3160}
2564 3161
2565void 3162void
2566ev_resume (EV_P) 3163ev_resume (EV_P) EV_THROW
2567{ 3164{
2568 ev_tstamp mn_prev = mn_now; 3165 ev_tstamp mn_prev = mn_now;
2569 3166
2570 ev_now_update (EV_A); 3167 ev_now_update (EV_A);
2571 timers_reschedule (EV_A_ mn_now - mn_prev); 3168 timers_reschedule (EV_A_ mn_now - mn_prev);
… …
2610 w->pending = 0; 3207 w->pending = 0;
2611 } 3208 }
2612} 3209}
2613 3210
2614int 3211int
2615ev_clear_pending (EV_P_ void *w) 3212ev_clear_pending (EV_P_ void *w) EV_THROW
2616{ 3213{
2617 W w_ = (W)w; 3214 W w_ = (W)w;
2618 int pending = w_->pending; 3215 int pending = w_->pending;
2619 3216
2620 if (expect_true (pending)) 3217 if (expect_true (pending))
… …
2653} 3250}
2654 3251
2655/*****************************************************************************/ 3252/*****************************************************************************/
2656 3253
2657void noinline 3254void noinline
2658ev_io_start (EV_P_ ev_io *w) 3255ev_io_start (EV_P_ ev_io *w) EV_THROW
2659{ 3256{
2660 int fd = w->fd; 3257 int fd = w->fd;
2661 3258
2662 if (expect_false (ev_is_active (w))) 3259 if (expect_false (ev_is_active (w)))
2663 return; 3260 return;
… …
2669 3266
2670 ev_start (EV_A_ (W)w, 1); 3267 ev_start (EV_A_ (W)w, 1);
2671 array_needsize (ANFD, anfds, anfdmax, fd + 1, array_init_zero); 3268 array_needsize (ANFD, anfds, anfdmax, fd + 1, array_init_zero);
2672 wlist_add (&anfds[fd].head, (WL)w); 3269 wlist_add (&anfds[fd].head, (WL)w);
2673 3270
3271 /* common bug, apparently */
3272 assert (("libev: ev_io_start called with corrupted watcher", ((WL)w)->next != (WL)w));
3273
2674 fd_change (EV_A_ fd, w->events & EV__IOFDSET | EV_ANFD_REIFY); 3274 fd_change (EV_A_ fd, w->events & EV__IOFDSET | EV_ANFD_REIFY);
2675 w->events &= ~EV__IOFDSET; 3275 w->events &= ~EV__IOFDSET;
2676 3276
2677 EV_FREQUENT_CHECK; 3277 EV_FREQUENT_CHECK;
2678} 3278}
2679 3279
2680void noinline 3280void noinline
2681ev_io_stop (EV_P_ ev_io *w) 3281ev_io_stop (EV_P_ ev_io *w) EV_THROW
2682{ 3282{
2683 clear_pending (EV_A_ (W)w); 3283 clear_pending (EV_A_ (W)w);
2684 if (expect_false (!ev_is_active (w))) 3284 if (expect_false (!ev_is_active (w)))
2685 return; 3285 return;
2686 3286
… …
2695 3295
2696 EV_FREQUENT_CHECK; 3296 EV_FREQUENT_CHECK;
2697} 3297}
2698 3298
2699void noinline 3299void noinline
2700ev_timer_start (EV_P_ ev_timer *w) 3300ev_timer_start (EV_P_ ev_timer *w) EV_THROW
2701{ 3301{
2702 if (expect_false (ev_is_active (w))) 3302 if (expect_false (ev_is_active (w)))
2703 return; 3303 return;
2704 3304
2705 ev_at (w) += mn_now; 3305 ev_at (w) += mn_now;
… …
2719 3319
2720 /*assert (("libev: internal timer heap corruption", timers [ev_active (w)] == (WT)w));*/ 3320 /*assert (("libev: internal timer heap corruption", timers [ev_active (w)] == (WT)w));*/
2721} 3321}
2722 3322
2723void noinline 3323void noinline
2724ev_timer_stop (EV_P_ ev_timer *w) 3324ev_timer_stop (EV_P_ ev_timer *w) EV_THROW
2725{ 3325{
2726 clear_pending (EV_A_ (W)w); 3326 clear_pending (EV_A_ (W)w);
2727 if (expect_false (!ev_is_active (w))) 3327 if (expect_false (!ev_is_active (w)))
2728 return; 3328 return;
2729 3329
… …
2749 3349
2750 EV_FREQUENT_CHECK; 3350 EV_FREQUENT_CHECK;
2751} 3351}
2752 3352
2753void noinline 3353void noinline
2754ev_timer_again (EV_P_ ev_timer *w) 3354ev_timer_again (EV_P_ ev_timer *w) EV_THROW
2755{ 3355{
2756 EV_FREQUENT_CHECK; 3356 EV_FREQUENT_CHECK;
3357
3358 clear_pending (EV_A_ (W)w);
2757 3359
2758 if (ev_is_active (w)) 3360 if (ev_is_active (w))
2759 { 3361 {
2760 if (w->repeat) 3362 if (w->repeat)
2761 { 3363 {
… …
2774 3376
2775 EV_FREQUENT_CHECK; 3377 EV_FREQUENT_CHECK;
2776} 3378}
2777 3379
2778ev_tstamp 3380ev_tstamp
2779ev_timer_remaining (EV_P_ ev_timer *w) 3381ev_timer_remaining (EV_P_ ev_timer *w) EV_THROW
2780{ 3382{
2781 return ev_at (w) - (ev_is_active (w) ? mn_now : 0.); 3383 return ev_at (w) - (ev_is_active (w) ? mn_now : 0.);
2782} 3384}
2783 3385
2784#if EV_PERIODIC_ENABLE 3386#if EV_PERIODIC_ENABLE
2785void noinline 3387void noinline
2786ev_periodic_start (EV_P_ ev_periodic *w) 3388ev_periodic_start (EV_P_ ev_periodic *w) EV_THROW
2787{ 3389{
2788 if (expect_false (ev_is_active (w))) 3390 if (expect_false (ev_is_active (w)))
2789 return; 3391 return;
2790 3392
2791 if (w->reschedule_cb) 3393 if (w->reschedule_cb)
… …
2811 3413
2812 /*assert (("libev: internal periodic heap corruption", ANHE_w (periodics [ev_active (w)]) == (WT)w));*/ 3414 /*assert (("libev: internal periodic heap corruption", ANHE_w (periodics [ev_active (w)]) == (WT)w));*/
2813} 3415}
2814 3416
2815void noinline 3417void noinline
2816ev_periodic_stop (EV_P_ ev_periodic *w) 3418ev_periodic_stop (EV_P_ ev_periodic *w) EV_THROW
2817{ 3419{
2818 clear_pending (EV_A_ (W)w); 3420 clear_pending (EV_A_ (W)w);
2819 if (expect_false (!ev_is_active (w))) 3421 if (expect_false (!ev_is_active (w)))
2820 return; 3422 return;
2821 3423
… …
2839 3441
2840 EV_FREQUENT_CHECK; 3442 EV_FREQUENT_CHECK;
2841} 3443}
2842 3444
2843void noinline 3445void noinline
2844ev_periodic_again (EV_P_ ev_periodic *w) 3446ev_periodic_again (EV_P_ ev_periodic *w) EV_THROW
2845{ 3447{
2846 /* TODO: use adjustheap and recalculation */ 3448 /* TODO: use adjustheap and recalculation */
2847 ev_periodic_stop (EV_A_ w); 3449 ev_periodic_stop (EV_A_ w);
2848 ev_periodic_start (EV_A_ w); 3450 ev_periodic_start (EV_A_ w);
2849} 3451}
… …
2854#endif 3456#endif
2855 3457
2856#if EV_SIGNAL_ENABLE 3458#if EV_SIGNAL_ENABLE
2857 3459
2858void noinline 3460void noinline
2859ev_signal_start (EV_P_ ev_signal *w) 3461ev_signal_start (EV_P_ ev_signal *w) EV_THROW
2860{ 3462{
2861 if (expect_false (ev_is_active (w))) 3463 if (expect_false (ev_is_active (w)))
2862 return; 3464 return;
2863 3465
2864 assert (("libev: ev_signal_start called with illegal signal number", w->signum > 0 && w->signum < EV_NSIG)); 3466 assert (("libev: ev_signal_start called with illegal signal number", w->signum > 0 && w->signum < EV_NSIG));
… …
2935 3537
2936 EV_FREQUENT_CHECK; 3538 EV_FREQUENT_CHECK;
2937} 3539}
2938 3540
2939void noinline 3541void noinline
2940ev_signal_stop (EV_P_ ev_signal *w) 3542ev_signal_stop (EV_P_ ev_signal *w) EV_THROW
2941{ 3543{
2942 clear_pending (EV_A_ (W)w); 3544 clear_pending (EV_A_ (W)w);
2943 if (expect_false (!ev_is_active (w))) 3545 if (expect_false (!ev_is_active (w)))
2944 return; 3546 return;
2945 3547
… …
2976#endif 3578#endif
2977 3579
2978#if EV_CHILD_ENABLE 3580#if EV_CHILD_ENABLE
2979 3581
2980void 3582void
2981ev_child_start (EV_P_ ev_child *w) 3583ev_child_start (EV_P_ ev_child *w) EV_THROW
2982{ 3584{
2983#if EV_MULTIPLICITY 3585#if EV_MULTIPLICITY
2984 assert (("libev: child watchers are only supported in the default loop", loop == ev_default_loop_ptr)); 3586 assert (("libev: child watchers are only supported in the default loop", loop == ev_default_loop_ptr));
2985#endif 3587#endif
2986 if (expect_false (ev_is_active (w))) 3588 if (expect_false (ev_is_active (w)))
… …
2993 3595
2994 EV_FREQUENT_CHECK; 3596 EV_FREQUENT_CHECK;
2995} 3597}
2996 3598
2997void 3599void
2998ev_child_stop (EV_P_ ev_child *w) 3600ev_child_stop (EV_P_ ev_child *w) EV_THROW
2999{ 3601{
3000 clear_pending (EV_A_ (W)w); 3602 clear_pending (EV_A_ (W)w);
3001 if (expect_false (!ev_is_active (w))) 3603 if (expect_false (!ev_is_active (w)))
3002 return; 3604 return;
3003 3605
… …
3155 infy_wd (EV_A_ ev->wd, ev->wd, ev); 3757 infy_wd (EV_A_ ev->wd, ev->wd, ev);
3156 ofs += sizeof (struct inotify_event) + ev->len; 3758 ofs += sizeof (struct inotify_event) + ev->len;
3157 } 3759 }
3158} 3760}
3159 3761
3160inline_size void 3762inline_size void ecb_cold
3161ev_check_2625 (EV_P) 3763ev_check_2625 (EV_P)
3162{ 3764{
3163 /* kernels < 2.6.25 are borked 3765 /* kernels < 2.6.25 are borked
3164 * http://www.ussg.indiana.edu/hypermail/linux/kernel/0711.3/1208.html 3766 * http://www.ussg.indiana.edu/hypermail/linux/kernel/0711.3/1208.html
3165 */ 3767 */
… …
3170} 3772}
3171 3773
3172inline_size int 3774inline_size int
3173infy_newfd (void) 3775infy_newfd (void)
3174{ 3776{
3175#if defined (IN_CLOEXEC) && defined (IN_NONBLOCK) 3777#if defined IN_CLOEXEC && defined IN_NONBLOCK
3176 int fd = inotify_init1 (IN_CLOEXEC | IN_NONBLOCK); 3778 int fd = inotify_init1 (IN_CLOEXEC | IN_NONBLOCK);
3177 if (fd >= 0) 3779 if (fd >= 0)
3178 return fd; 3780 return fd;
3179#endif 3781#endif
3180 return inotify_init (); 3782 return inotify_init ();
… …
3255#else 3857#else
3256# define EV_LSTAT(p,b) lstat (p, b) 3858# define EV_LSTAT(p,b) lstat (p, b)
3257#endif 3859#endif
3258 3860
3259void 3861void
3260ev_stat_stat (EV_P_ ev_stat *w) 3862ev_stat_stat (EV_P_ ev_stat *w) EV_THROW
3261{ 3863{
3262 if (lstat (w->path, &w->attr) < 0) 3864 if (lstat (w->path, &w->attr) < 0)
3263 w->attr.st_nlink = 0; 3865 w->attr.st_nlink = 0;
3264 else if (!w->attr.st_nlink) 3866 else if (!w->attr.st_nlink)
3265 w->attr.st_nlink = 1; 3867 w->attr.st_nlink = 1;
… …
3304 ev_feed_event (EV_A_ w, EV_STAT); 3906 ev_feed_event (EV_A_ w, EV_STAT);
3305 } 3907 }
3306} 3908}
3307 3909
3308void 3910void
3309ev_stat_start (EV_P_ ev_stat *w) 3911ev_stat_start (EV_P_ ev_stat *w) EV_THROW
3310{ 3912{
3311 if (expect_false (ev_is_active (w))) 3913 if (expect_false (ev_is_active (w)))
3312 return; 3914 return;
3313 3915
3314 ev_stat_stat (EV_A_ w); 3916 ev_stat_stat (EV_A_ w);
… …
3335 3937
3336 EV_FREQUENT_CHECK; 3938 EV_FREQUENT_CHECK;
3337} 3939}
3338 3940
3339void 3941void
3340ev_stat_stop (EV_P_ ev_stat *w) 3942ev_stat_stop (EV_P_ ev_stat *w) EV_THROW
3341{ 3943{
3342 clear_pending (EV_A_ (W)w); 3944 clear_pending (EV_A_ (W)w);
3343 if (expect_false (!ev_is_active (w))) 3945 if (expect_false (!ev_is_active (w)))
3344 return; 3946 return;
3345 3947
… …
3361} 3963}
3362#endif 3964#endif
3363 3965
3364#if EV_IDLE_ENABLE 3966#if EV_IDLE_ENABLE
3365void 3967void
3366ev_idle_start (EV_P_ ev_idle *w) 3968ev_idle_start (EV_P_ ev_idle *w) EV_THROW
3367{ 3969{
3368 if (expect_false (ev_is_active (w))) 3970 if (expect_false (ev_is_active (w)))
3369 return; 3971 return;
3370 3972
3371 pri_adjust (EV_A_ (W)w); 3973 pri_adjust (EV_A_ (W)w);
… …
3384 3986
3385 EV_FREQUENT_CHECK; 3987 EV_FREQUENT_CHECK;
3386} 3988}
3387 3989
3388void 3990void
3389ev_idle_stop (EV_P_ ev_idle *w) 3991ev_idle_stop (EV_P_ ev_idle *w) EV_THROW
3390{ 3992{
3391 clear_pending (EV_A_ (W)w); 3993 clear_pending (EV_A_ (W)w);
3392 if (expect_false (!ev_is_active (w))) 3994 if (expect_false (!ev_is_active (w)))
3393 return; 3995 return;
3394 3996
… …
3408} 4010}
3409#endif 4011#endif
3410 4012
3411#if EV_PREPARE_ENABLE 4013#if EV_PREPARE_ENABLE
3412void 4014void
3413ev_prepare_start (EV_P_ ev_prepare *w) 4015ev_prepare_start (EV_P_ ev_prepare *w) EV_THROW
3414{ 4016{
3415 if (expect_false (ev_is_active (w))) 4017 if (expect_false (ev_is_active (w)))
3416 return; 4018 return;
3417 4019
3418 EV_FREQUENT_CHECK; 4020 EV_FREQUENT_CHECK;
… …
3423 4025
3424 EV_FREQUENT_CHECK; 4026 EV_FREQUENT_CHECK;
3425} 4027}
3426 4028
3427void 4029void
3428ev_prepare_stop (EV_P_ ev_prepare *w) 4030ev_prepare_stop (EV_P_ ev_prepare *w) EV_THROW
3429{ 4031{
3430 clear_pending (EV_A_ (W)w); 4032 clear_pending (EV_A_ (W)w);
3431 if (expect_false (!ev_is_active (w))) 4033 if (expect_false (!ev_is_active (w)))
3432 return; 4034 return;
3433 4035
… …
3446} 4048}
3447#endif 4049#endif
3448 4050
3449#if EV_CHECK_ENABLE 4051#if EV_CHECK_ENABLE
3450void 4052void
3451ev_check_start (EV_P_ ev_check *w) 4053ev_check_start (EV_P_ ev_check *w) EV_THROW
3452{ 4054{
3453 if (expect_false (ev_is_active (w))) 4055 if (expect_false (ev_is_active (w)))
3454 return; 4056 return;
3455 4057
3456 EV_FREQUENT_CHECK; 4058 EV_FREQUENT_CHECK;
… …
3461 4063
3462 EV_FREQUENT_CHECK; 4064 EV_FREQUENT_CHECK;
3463} 4065}
3464 4066
3465void 4067void
3466ev_check_stop (EV_P_ ev_check *w) 4068ev_check_stop (EV_P_ ev_check *w) EV_THROW
3467{ 4069{
3468 clear_pending (EV_A_ (W)w); 4070 clear_pending (EV_A_ (W)w);
3469 if (expect_false (!ev_is_active (w))) 4071 if (expect_false (!ev_is_active (w)))
3470 return; 4072 return;
3471 4073
… …
3484} 4086}
3485#endif 4087#endif
3486 4088
3487#if EV_EMBED_ENABLE 4089#if EV_EMBED_ENABLE
3488void noinline 4090void noinline
3489ev_embed_sweep (EV_P_ ev_embed *w) 4091ev_embed_sweep (EV_P_ ev_embed *w) EV_THROW
3490{ 4092{
3491 ev_run (w->other, EVRUN_NOWAIT); 4093 ev_run (w->other, EVRUN_NOWAIT);
3492} 4094}
3493 4095
3494static void 4096static void
… …
3542 ev_idle_stop (EV_A_ idle); 4144 ev_idle_stop (EV_A_ idle);
3543} 4145}
3544#endif 4146#endif
3545 4147
3546void 4148void
3547ev_embed_start (EV_P_ ev_embed *w) 4149ev_embed_start (EV_P_ ev_embed *w) EV_THROW
3548{ 4150{
3549 if (expect_false (ev_is_active (w))) 4151 if (expect_false (ev_is_active (w)))
3550 return; 4152 return;
3551 4153
3552 { 4154 {
… …
3573 4175
3574 EV_FREQUENT_CHECK; 4176 EV_FREQUENT_CHECK;
3575} 4177}
3576 4178
3577void 4179void
3578ev_embed_stop (EV_P_ ev_embed *w) 4180ev_embed_stop (EV_P_ ev_embed *w) EV_THROW
3579{ 4181{
3580 clear_pending (EV_A_ (W)w); 4182 clear_pending (EV_A_ (W)w);
3581 if (expect_false (!ev_is_active (w))) 4183 if (expect_false (!ev_is_active (w)))
3582 return; 4184 return;
3583 4185
… …
3593} 4195}
3594#endif 4196#endif
3595 4197
3596#if EV_FORK_ENABLE 4198#if EV_FORK_ENABLE
3597void 4199void
3598ev_fork_start (EV_P_ ev_fork *w) 4200ev_fork_start (EV_P_ ev_fork *w) EV_THROW
3599{ 4201{
3600 if (expect_false (ev_is_active (w))) 4202 if (expect_false (ev_is_active (w)))
3601 return; 4203 return;
3602 4204
3603 EV_FREQUENT_CHECK; 4205 EV_FREQUENT_CHECK;
… …
3608 4210
3609 EV_FREQUENT_CHECK; 4211 EV_FREQUENT_CHECK;
3610} 4212}
3611 4213
3612void 4214void
3613ev_fork_stop (EV_P_ ev_fork *w) 4215ev_fork_stop (EV_P_ ev_fork *w) EV_THROW
3614{ 4216{
3615 clear_pending (EV_A_ (W)w); 4217 clear_pending (EV_A_ (W)w);
3616 if (expect_false (!ev_is_active (w))) 4218 if (expect_false (!ev_is_active (w)))
3617 return; 4219 return;
3618 4220
… …
3631} 4233}
3632#endif 4234#endif
3633 4235
3634#if EV_CLEANUP_ENABLE 4236#if EV_CLEANUP_ENABLE
3635void 4237void
3636ev_cleanup_start (EV_P_ ev_cleanup *w) 4238ev_cleanup_start (EV_P_ ev_cleanup *w) EV_THROW
3637{ 4239{
3638 if (expect_false (ev_is_active (w))) 4240 if (expect_false (ev_is_active (w)))
3639 return; 4241 return;
3640 4242
3641 EV_FREQUENT_CHECK; 4243 EV_FREQUENT_CHECK;
… …
3648 ev_unref (EV_A); 4250 ev_unref (EV_A);
3649 EV_FREQUENT_CHECK; 4251 EV_FREQUENT_CHECK;
3650} 4252}
3651 4253
3652void 4254void
3653ev_cleanup_stop (EV_P_ ev_cleanup *w) 4255ev_cleanup_stop (EV_P_ ev_cleanup *w) EV_THROW
3654{ 4256{
3655 clear_pending (EV_A_ (W)w); 4257 clear_pending (EV_A_ (W)w);
3656 if (expect_false (!ev_is_active (w))) 4258 if (expect_false (!ev_is_active (w)))
3657 return; 4259 return;
3658 4260
… …
3672} 4274}
3673#endif 4275#endif
3674 4276
3675#if EV_ASYNC_ENABLE 4277#if EV_ASYNC_ENABLE
3676void 4278void
3677ev_async_start (EV_P_ ev_async *w) 4279ev_async_start (EV_P_ ev_async *w) EV_THROW
3678{ 4280{
3679 if (expect_false (ev_is_active (w))) 4281 if (expect_false (ev_is_active (w)))
3680 return; 4282 return;
3681 4283
3682 w->sent = 0; 4284 w->sent = 0;
… …
3691 4293
3692 EV_FREQUENT_CHECK; 4294 EV_FREQUENT_CHECK;
3693} 4295}
3694 4296
3695void 4297void
3696ev_async_stop (EV_P_ ev_async *w) 4298ev_async_stop (EV_P_ ev_async *w) EV_THROW
3697{ 4299{
3698 clear_pending (EV_A_ (W)w); 4300 clear_pending (EV_A_ (W)w);
3699 if (expect_false (!ev_is_active (w))) 4301 if (expect_false (!ev_is_active (w)))
3700 return; 4302 return;
3701 4303
… …
3712 4314
3713 EV_FREQUENT_CHECK; 4315 EV_FREQUENT_CHECK;
3714} 4316}
3715 4317
3716void 4318void
3717ev_async_send (EV_P_ ev_async *w) 4319ev_async_send (EV_P_ ev_async *w) EV_THROW
3718{ 4320{
3719 w->sent = 1; 4321 w->sent = 1;
3720 evpipe_write (EV_A_ &async_pending); 4322 evpipe_write (EV_A_ &async_pending);
3721} 4323}
3722#endif 4324#endif
… …
3759 4361
3760 once_cb (EV_A_ once, revents | ev_clear_pending (EV_A_ &once->io)); 4362 once_cb (EV_A_ once, revents | ev_clear_pending (EV_A_ &once->io));
3761} 4363}
3762 4364
3763void 4365void
3764ev_once (EV_P_ int fd, int events, ev_tstamp timeout, void (*cb)(int revents, void *arg), void *arg) 4366ev_once (EV_P_ int fd, int events, ev_tstamp timeout, void (*cb)(int revents, void *arg), void *arg) EV_THROW
3765{ 4367{
3766 struct ev_once *once = (struct ev_once *)ev_malloc (sizeof (struct ev_once)); 4368 struct ev_once *once = (struct ev_once *)ev_malloc (sizeof (struct ev_once));
3767 4369
3768 if (expect_false (!once)) 4370 if (expect_false (!once))
3769 { 4371 {
… …
3790} 4392}
3791 4393
3792/*****************************************************************************/ 4394/*****************************************************************************/
3793 4395
3794#if EV_WALK_ENABLE 4396#if EV_WALK_ENABLE
3795void 4397void ecb_cold
3796ev_walk (EV_P_ int types, void (*cb)(EV_P_ int type, void *w)) 4398ev_walk (EV_P_ int types, void (*cb)(EV_P_ int type, void *w)) EV_THROW
3797{ 4399{
3798 int i, j; 4400 int i, j;
3799 ev_watcher_list *wl, *wn; 4401 ev_watcher_list *wl, *wn;
3800 4402
3801 if (types & (EV_IO | EV_EMBED)) 4403 if (types & (EV_IO | EV_EMBED))
… …
3844 cb (EV_A_ EV_PERIODIC, ANHE_w (periodics [i])); 4446 cb (EV_A_ EV_PERIODIC, ANHE_w (periodics [i]));
3845#endif 4447#endif
3846 4448
3847#if EV_IDLE_ENABLE 4449#if EV_IDLE_ENABLE
3848 if (types & EV_IDLE) 4450 if (types & EV_IDLE)
3849 for (j = NUMPRI; i--; ) 4451 for (j = NUMPRI; j--; )
3850 for (i = idlecnt [j]; i--; ) 4452 for (i = idlecnt [j]; i--; )
3851 cb (EV_A_ EV_IDLE, idles [j][i]); 4453 cb (EV_A_ EV_IDLE, idles [j][i]);
3852#endif 4454#endif
3853 4455
3854#if EV_FORK_ENABLE 4456#if EV_FORK_ENABLE
… …
3907 4509
3908#if EV_MULTIPLICITY 4510#if EV_MULTIPLICITY
3909 #include "ev_wrap.h" 4511 #include "ev_wrap.h"
3910#endif 4512#endif
3911 4513
3912EV_CPP(})
3913

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