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Comparing libev/ev.c (file contents):
Revision 1.370 by root, Sun Jan 30 19:05:41 2011 UTC vs.
Revision 1.423 by root, Sun Apr 22 10:14:20 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 *
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,
… …
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>
… …
205#define _DARWIN_UNLIMITED_SELECT 1 219#define _DARWIN_UNLIMITED_SELECT 1
206 220
207/* 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 */
208 222
209/* try to deduce the maximum number of signals on this platform */ 223/* try to deduce the maximum number of signals on this platform */
210#if defined (EV_NSIG) 224#if defined EV_NSIG
211/* use what's provided */ 225/* use what's provided */
212#elif defined (NSIG) 226#elif defined NSIG
213# define EV_NSIG (NSIG) 227# define EV_NSIG (NSIG)
214#elif defined(_NSIG) 228#elif defined _NSIG
215# define EV_NSIG (_NSIG) 229# define EV_NSIG (_NSIG)
216#elif defined (SIGMAX) 230#elif defined SIGMAX
217# define EV_NSIG (SIGMAX+1) 231# define EV_NSIG (SIGMAX+1)
218#elif defined (SIG_MAX) 232#elif defined SIG_MAX
219# define EV_NSIG (SIG_MAX+1) 233# define EV_NSIG (SIG_MAX+1)
220#elif defined (_SIG_MAX) 234#elif defined _SIG_MAX
221# define EV_NSIG (_SIG_MAX+1) 235# define EV_NSIG (_SIG_MAX+1)
222#elif defined (MAXSIG) 236#elif defined MAXSIG
223# define EV_NSIG (MAXSIG+1) 237# define EV_NSIG (MAXSIG+1)
224#elif defined (MAX_SIG) 238#elif defined MAX_SIG
225# define EV_NSIG (MAX_SIG+1) 239# define EV_NSIG (MAX_SIG+1)
226#elif defined (SIGARRAYSIZE) 240#elif defined SIGARRAYSIZE
227# define EV_NSIG (SIGARRAYSIZE) /* Assume ary[SIGARRAYSIZE] */ 241# define EV_NSIG (SIGARRAYSIZE) /* Assume ary[SIGARRAYSIZE] */
228#elif defined (_sys_nsig) 242#elif defined _sys_nsig
229# define EV_NSIG (_sys_nsig) /* Solaris 2.5 */ 243# define EV_NSIG (_sys_nsig) /* Solaris 2.5 */
230#else 244#else
231# error "unable to find value for NSIG, please report" 245# error "unable to find value for NSIG, please report"
232/* to make it compile regardless, just remove the above line, */ 246/* to make it compile regardless, just remove the above line, */
233/* but consider reporting it, too! :) */ 247/* but consider reporting it, too! :) */
234# define EV_NSIG 65 248# define EV_NSIG 65
235#endif 249#endif
236 250
251#ifndef EV_USE_FLOOR
252# define EV_USE_FLOOR 0
253#endif
254
237#ifndef EV_USE_CLOCK_SYSCALL 255#ifndef EV_USE_CLOCK_SYSCALL
238# if __linux && __GLIBC__ >= 2 256# if __linux && __GLIBC__ >= 2
239# define EV_USE_CLOCK_SYSCALL EV_FEATURE_OS 257# define EV_USE_CLOCK_SYSCALL EV_FEATURE_OS
240# else 258# else
241# define EV_USE_CLOCK_SYSCALL 0 259# define EV_USE_CLOCK_SYSCALL 0
242# endif 260# endif
243#endif 261#endif
244 262
245#ifndef EV_USE_MONOTONIC 263#ifndef EV_USE_MONOTONIC
246# if defined (_POSIX_MONOTONIC_CLOCK) && _POSIX_MONOTONIC_CLOCK >= 0 264# if defined _POSIX_MONOTONIC_CLOCK && _POSIX_MONOTONIC_CLOCK >= 0
247# define EV_USE_MONOTONIC EV_FEATURE_OS 265# define EV_USE_MONOTONIC EV_FEATURE_OS
248# else 266# else
249# define EV_USE_MONOTONIC 0 267# define EV_USE_MONOTONIC 0
250# endif 268# endif
251#endif 269#endif
… …
341#endif 359#endif
342 360
343/* on linux, we can use a (slow) syscall to avoid a dependency on pthread, */ 361/* 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. */ 362/* which makes programs even slower. might work on other unices, too. */
345#if EV_USE_CLOCK_SYSCALL 363#if EV_USE_CLOCK_SYSCALL
346# include <syscall.h> 364# include <sys/syscall.h>
347# ifdef SYS_clock_gettime 365# ifdef SYS_clock_gettime
348# define clock_gettime(id, ts) syscall (SYS_clock_gettime, (id), (ts)) 366# define clock_gettime(id, ts) syscall (SYS_clock_gettime, (id), (ts))
349# undef EV_USE_MONOTONIC 367# undef EV_USE_MONOTONIC
350# define EV_USE_MONOTONIC 1 368# define EV_USE_MONOTONIC 1
351# else 369# else
… …
377# define EV_USE_INOTIFY 0 395# define EV_USE_INOTIFY 0
378#endif 396#endif
379 397
380#if !EV_USE_NANOSLEEP 398#if !EV_USE_NANOSLEEP
381/* hp-ux has it in sys/time.h, which we unconditionally include above */ 399/* hp-ux has it in sys/time.h, which we unconditionally include above */
382# if !defined(_WIN32) && !defined(__hpux) 400# if !defined _WIN32 && !defined __hpux
383# include <sys/select.h> 401# include <sys/select.h>
384# endif 402# endif
385#endif 403#endif
386 404
387#if EV_USE_INOTIFY 405#if EV_USE_INOTIFY
… …
443#else 461#else
444# define EV_FREQUENT_CHECK do { } while (0) 462# define EV_FREQUENT_CHECK do { } while (0)
445#endif 463#endif
446 464
447/* 465/*
448 * This is used to avoid floating point rounding problems. 466 * 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. 467 * This value is good at least till the year 4000.
453 * Better solutions welcome.
454 */ 468 */
455#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 */
456 471
457#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) */
458#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) */
459 474
460#define EV_TV_SET(tv,t) do { tv.tv_sec = (long)t; tv.tv_usec = (long)((t - tv.tv_sec) * 1e6); } while (0) 475#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) 476#define EV_TS_SET(ts,t) do { ts.tv_sec = (long)t; ts.tv_nsec = (long)((t - ts.tv_sec) * 1e9); } while (0)
462 477
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;
463#if __GNUC__ >= 4 519 #if __GNUC__
464# define expect(expr,value) __builtin_expect ((expr),(value)) 520 typedef signed long long int64_t;
465# 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
466#else 526#else
467# define expect(expr,value) (expr) 527 #include <inttypes.h>
468# define noinline
469# if __STDC_VERSION__ < 199901L && __GNUC__ < 2
470# define inline
471# 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)))
472#endif 542 #endif
543#endif
473 544
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 #elif defined __mips__
583 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("sync" : : : "memory")
584 #elif defined __alpha__
585 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("mb" : : : "memory")
586 #endif
587 #endif
588#endif
589
590#ifndef ECB_MEMORY_FENCE
591 #if ECB_GCC_VERSION(4,4) || defined __INTEL_COMPILER || defined __clang__
592 #define ECB_MEMORY_FENCE __sync_synchronize ()
593 /*#define ECB_MEMORY_FENCE_ACQUIRE ({ char dummy = 0; __sync_lock_test_and_set (&dummy, 1); }) */
594 /*#define ECB_MEMORY_FENCE_RELEASE ({ char dummy = 1; __sync_lock_release (&dummy ); }) */
595 #elif _MSC_VER >= 1400 /* VC++ 2005 */
596 #pragma intrinsic(_ReadBarrier,_WriteBarrier,_ReadWriteBarrier)
597 #define ECB_MEMORY_FENCE _ReadWriteBarrier ()
598 #define ECB_MEMORY_FENCE_ACQUIRE _ReadWriteBarrier () /* according to msdn, _ReadBarrier is not a load fence */
599 #define ECB_MEMORY_FENCE_RELEASE _WriteBarrier ()
600 #elif defined _WIN32
601 #include <WinNT.h>
602 #define ECB_MEMORY_FENCE MemoryBarrier () /* actually just xchg on x86... scary */
603 #elif __SUNPRO_C >= 0x5110 || __SUNPRO_CC >= 0x5110
604 #include <mbarrier.h>
605 #define ECB_MEMORY_FENCE __machine_rw_barrier ()
606 #define ECB_MEMORY_FENCE_ACQUIRE __machine_r_barrier ()
607 #define ECB_MEMORY_FENCE_RELEASE __machine_w_barrier ()
608 #elif __xlC__
609 #define ECB_MEMORY_FENCE __sync ()
610 #endif
611#endif
612
613#ifndef ECB_MEMORY_FENCE
614 #if !ECB_AVOID_PTHREADS
615 /*
616 * if you get undefined symbol references to pthread_mutex_lock,
617 * or failure to find pthread.h, then you should implement
618 * the ECB_MEMORY_FENCE operations for your cpu/compiler
619 * OR provide pthread.h and link against the posix thread library
620 * of your system.
621 */
622 #include <pthread.h>
623 #define ECB_NEEDS_PTHREADS 1
624 #define ECB_MEMORY_FENCE_NEEDS_PTHREADS 1
625
626 static pthread_mutex_t ecb_mf_lock = PTHREAD_MUTEX_INITIALIZER;
627 #define ECB_MEMORY_FENCE do { pthread_mutex_lock (&ecb_mf_lock); pthread_mutex_unlock (&ecb_mf_lock); } while (0)
628 #endif
629#endif
630
631#if !defined ECB_MEMORY_FENCE_ACQUIRE && defined ECB_MEMORY_FENCE
632 #define ECB_MEMORY_FENCE_ACQUIRE ECB_MEMORY_FENCE
633#endif
634
635#if !defined ECB_MEMORY_FENCE_RELEASE && defined ECB_MEMORY_FENCE
636 #define ECB_MEMORY_FENCE_RELEASE ECB_MEMORY_FENCE
637#endif
638
639/*****************************************************************************/
640
641#define ECB_C99 (__STDC_VERSION__ >= 199901L)
642
643#if __cplusplus
644 #define ecb_inline static inline
645#elif ECB_GCC_VERSION(2,5)
646 #define ecb_inline static __inline__
647#elif ECB_C99
648 #define ecb_inline static inline
649#else
650 #define ecb_inline static
651#endif
652
653#if ECB_GCC_VERSION(3,3)
654 #define ecb_restrict __restrict__
655#elif ECB_C99
656 #define ecb_restrict restrict
657#else
658 #define ecb_restrict
659#endif
660
661typedef int ecb_bool;
662
663#define ECB_CONCAT_(a, b) a ## b
664#define ECB_CONCAT(a, b) ECB_CONCAT_(a, b)
665#define ECB_STRINGIFY_(a) # a
666#define ECB_STRINGIFY(a) ECB_STRINGIFY_(a)
667
668#define ecb_function_ ecb_inline
669
670#if ECB_GCC_VERSION(3,1)
671 #define ecb_attribute(attrlist) __attribute__(attrlist)
672 #define ecb_is_constant(expr) __builtin_constant_p (expr)
673 #define ecb_expect(expr,value) __builtin_expect ((expr),(value))
674 #define ecb_prefetch(addr,rw,locality) __builtin_prefetch (addr, rw, locality)
675#else
676 #define ecb_attribute(attrlist)
677 #define ecb_is_constant(expr) 0
678 #define ecb_expect(expr,value) (expr)
679 #define ecb_prefetch(addr,rw,locality)
680#endif
681
682/* no emulation for ecb_decltype */
683#if ECB_GCC_VERSION(4,5)
684 #define ecb_decltype(x) __decltype(x)
685#elif ECB_GCC_VERSION(3,0)
686 #define ecb_decltype(x) __typeof(x)
687#endif
688
689#define ecb_noinline ecb_attribute ((__noinline__))
690#define ecb_noreturn ecb_attribute ((__noreturn__))
691#define ecb_unused ecb_attribute ((__unused__))
692#define ecb_const ecb_attribute ((__const__))
693#define ecb_pure ecb_attribute ((__pure__))
694
695#if ECB_GCC_VERSION(4,3)
696 #define ecb_artificial ecb_attribute ((__artificial__))
697 #define ecb_hot ecb_attribute ((__hot__))
698 #define ecb_cold ecb_attribute ((__cold__))
699#else
700 #define ecb_artificial
701 #define ecb_hot
702 #define ecb_cold
703#endif
704
705/* put around conditional expressions if you are very sure that the */
706/* expression is mostly true or mostly false. note that these return */
707/* booleans, not the expression. */
474#define expect_false(expr) expect ((expr) != 0, 0) 708#define ecb_expect_false(expr) ecb_expect (!!(expr), 0)
475#define expect_true(expr) expect ((expr) != 0, 1) 709#define ecb_expect_true(expr) ecb_expect (!!(expr), 1)
710/* for compatibility to the rest of the world */
711#define ecb_likely(expr) ecb_expect_true (expr)
712#define ecb_unlikely(expr) ecb_expect_false (expr)
713
714/* count trailing zero bits and count # of one bits */
715#if ECB_GCC_VERSION(3,4)
716 /* we assume int == 32 bit, long == 32 or 64 bit and long long == 64 bit */
717 #define ecb_ld32(x) (__builtin_clz (x) ^ 31)
718 #define ecb_ld64(x) (__builtin_clzll (x) ^ 63)
719 #define ecb_ctz32(x) __builtin_ctz (x)
720 #define ecb_ctz64(x) __builtin_ctzll (x)
721 #define ecb_popcount32(x) __builtin_popcount (x)
722 /* no popcountll */
723#else
724 ecb_function_ int ecb_ctz32 (uint32_t x) ecb_const;
725 ecb_function_ int
726 ecb_ctz32 (uint32_t x)
727 {
728 int r = 0;
729
730 x &= ~x + 1; /* this isolates the lowest bit */
731
732#if ECB_branchless_on_i386
733 r += !!(x & 0xaaaaaaaa) << 0;
734 r += !!(x & 0xcccccccc) << 1;
735 r += !!(x & 0xf0f0f0f0) << 2;
736 r += !!(x & 0xff00ff00) << 3;
737 r += !!(x & 0xffff0000) << 4;
738#else
739 if (x & 0xaaaaaaaa) r += 1;
740 if (x & 0xcccccccc) r += 2;
741 if (x & 0xf0f0f0f0) r += 4;
742 if (x & 0xff00ff00) r += 8;
743 if (x & 0xffff0000) r += 16;
744#endif
745
746 return r;
747 }
748
749 ecb_function_ int ecb_ctz64 (uint64_t x) ecb_const;
750 ecb_function_ int
751 ecb_ctz64 (uint64_t x)
752 {
753 int shift = x & 0xffffffffU ? 0 : 32;
754 return ecb_ctz32 (x >> shift) + shift;
755 }
756
757 ecb_function_ int ecb_popcount32 (uint32_t x) ecb_const;
758 ecb_function_ int
759 ecb_popcount32 (uint32_t x)
760 {
761 x -= (x >> 1) & 0x55555555;
762 x = ((x >> 2) & 0x33333333) + (x & 0x33333333);
763 x = ((x >> 4) + x) & 0x0f0f0f0f;
764 x *= 0x01010101;
765
766 return x >> 24;
767 }
768
769 ecb_function_ int ecb_ld32 (uint32_t x) ecb_const;
770 ecb_function_ int ecb_ld32 (uint32_t x)
771 {
772 int r = 0;
773
774 if (x >> 16) { x >>= 16; r += 16; }
775 if (x >> 8) { x >>= 8; r += 8; }
776 if (x >> 4) { x >>= 4; r += 4; }
777 if (x >> 2) { x >>= 2; r += 2; }
778 if (x >> 1) { r += 1; }
779
780 return r;
781 }
782
783 ecb_function_ int ecb_ld64 (uint64_t x) ecb_const;
784 ecb_function_ int ecb_ld64 (uint64_t x)
785 {
786 int r = 0;
787
788 if (x >> 32) { x >>= 32; r += 32; }
789
790 return r + ecb_ld32 (x);
791 }
792#endif
793
794ecb_function_ uint8_t ecb_bitrev8 (uint8_t x) ecb_const;
795ecb_function_ uint8_t ecb_bitrev8 (uint8_t x)
796{
797 return ( (x * 0x0802U & 0x22110U)
798 | (x * 0x8020U & 0x88440U)) * 0x10101U >> 16;
799}
800
801ecb_function_ uint16_t ecb_bitrev16 (uint16_t x) ecb_const;
802ecb_function_ uint16_t ecb_bitrev16 (uint16_t x)
803{
804 x = ((x >> 1) & 0x5555) | ((x & 0x5555) << 1);
805 x = ((x >> 2) & 0x3333) | ((x & 0x3333) << 2);
806 x = ((x >> 4) & 0x0f0f) | ((x & 0x0f0f) << 4);
807 x = ( x >> 8 ) | ( x << 8);
808
809 return x;
810}
811
812ecb_function_ uint32_t ecb_bitrev32 (uint32_t x) ecb_const;
813ecb_function_ uint32_t ecb_bitrev32 (uint32_t x)
814{
815 x = ((x >> 1) & 0x55555555) | ((x & 0x55555555) << 1);
816 x = ((x >> 2) & 0x33333333) | ((x & 0x33333333) << 2);
817 x = ((x >> 4) & 0x0f0f0f0f) | ((x & 0x0f0f0f0f) << 4);
818 x = ((x >> 8) & 0x00ff00ff) | ((x & 0x00ff00ff) << 8);
819 x = ( x >> 16 ) | ( x << 16);
820
821 return x;
822}
823
824/* popcount64 is only available on 64 bit cpus as gcc builtin */
825/* so for this version we are lazy */
826ecb_function_ int ecb_popcount64 (uint64_t x) ecb_const;
827ecb_function_ int
828ecb_popcount64 (uint64_t x)
829{
830 return ecb_popcount32 (x) + ecb_popcount32 (x >> 32);
831}
832
833ecb_inline uint8_t ecb_rotl8 (uint8_t x, unsigned int count) ecb_const;
834ecb_inline uint8_t ecb_rotr8 (uint8_t x, unsigned int count) ecb_const;
835ecb_inline uint16_t ecb_rotl16 (uint16_t x, unsigned int count) ecb_const;
836ecb_inline uint16_t ecb_rotr16 (uint16_t x, unsigned int count) ecb_const;
837ecb_inline uint32_t ecb_rotl32 (uint32_t x, unsigned int count) ecb_const;
838ecb_inline uint32_t ecb_rotr32 (uint32_t x, unsigned int count) ecb_const;
839ecb_inline uint64_t ecb_rotl64 (uint64_t x, unsigned int count) ecb_const;
840ecb_inline uint64_t ecb_rotr64 (uint64_t x, unsigned int count) ecb_const;
841
842ecb_inline uint8_t ecb_rotl8 (uint8_t x, unsigned int count) { return (x >> ( 8 - count)) | (x << count); }
843ecb_inline uint8_t ecb_rotr8 (uint8_t x, unsigned int count) { return (x << ( 8 - count)) | (x >> count); }
844ecb_inline uint16_t ecb_rotl16 (uint16_t x, unsigned int count) { return (x >> (16 - count)) | (x << count); }
845ecb_inline uint16_t ecb_rotr16 (uint16_t x, unsigned int count) { return (x << (16 - count)) | (x >> count); }
846ecb_inline uint32_t ecb_rotl32 (uint32_t x, unsigned int count) { return (x >> (32 - count)) | (x << count); }
847ecb_inline uint32_t ecb_rotr32 (uint32_t x, unsigned int count) { return (x << (32 - count)) | (x >> count); }
848ecb_inline uint64_t ecb_rotl64 (uint64_t x, unsigned int count) { return (x >> (64 - count)) | (x << count); }
849ecb_inline uint64_t ecb_rotr64 (uint64_t x, unsigned int count) { return (x << (64 - count)) | (x >> count); }
850
851#if ECB_GCC_VERSION(4,3)
852 #define ecb_bswap16(x) (__builtin_bswap32 (x) >> 16)
853 #define ecb_bswap32(x) __builtin_bswap32 (x)
854 #define ecb_bswap64(x) __builtin_bswap64 (x)
855#else
856 ecb_function_ uint16_t ecb_bswap16 (uint16_t x) ecb_const;
857 ecb_function_ uint16_t
858 ecb_bswap16 (uint16_t x)
859 {
860 return ecb_rotl16 (x, 8);
861 }
862
863 ecb_function_ uint32_t ecb_bswap32 (uint32_t x) ecb_const;
864 ecb_function_ uint32_t
865 ecb_bswap32 (uint32_t x)
866 {
867 return (((uint32_t)ecb_bswap16 (x)) << 16) | ecb_bswap16 (x >> 16);
868 }
869
870 ecb_function_ uint64_t ecb_bswap64 (uint64_t x) ecb_const;
871 ecb_function_ uint64_t
872 ecb_bswap64 (uint64_t x)
873 {
874 return (((uint64_t)ecb_bswap32 (x)) << 32) | ecb_bswap32 (x >> 32);
875 }
876#endif
877
878#if ECB_GCC_VERSION(4,5)
879 #define ecb_unreachable() __builtin_unreachable ()
880#else
881 /* this seems to work fine, but gcc always emits a warning for it :/ */
882 ecb_inline void ecb_unreachable (void) ecb_noreturn;
883 ecb_inline void ecb_unreachable (void) { }
884#endif
885
886/* try to tell the compiler that some condition is definitely true */
887#define ecb_assume(cond) do { if (!(cond)) ecb_unreachable (); } while (0)
888
889ecb_inline unsigned char ecb_byteorder_helper (void) ecb_const;
890ecb_inline unsigned char
891ecb_byteorder_helper (void)
892{
893 const uint32_t u = 0x11223344;
894 return *(unsigned char *)&u;
895}
896
897ecb_inline ecb_bool ecb_big_endian (void) ecb_const;
898ecb_inline ecb_bool ecb_big_endian (void) { return ecb_byteorder_helper () == 0x11; }
899ecb_inline ecb_bool ecb_little_endian (void) ecb_const;
900ecb_inline ecb_bool ecb_little_endian (void) { return ecb_byteorder_helper () == 0x44; }
901
902#if ECB_GCC_VERSION(3,0) || ECB_C99
903 #define ecb_mod(m,n) ((m) % (n) + ((m) % (n) < 0 ? (n) : 0))
904#else
905 #define ecb_mod(m,n) ((m) < 0 ? ((n) - 1 - ((-1 - (m)) % (n))) : ((m) % (n)))
906#endif
907
908#if __cplusplus
909 template<typename T>
910 static inline T ecb_div_rd (T val, T div)
911 {
912 return val < 0 ? - ((-val + div - 1) / div) : (val ) / div;
913 }
914 template<typename T>
915 static inline T ecb_div_ru (T val, T div)
916 {
917 return val < 0 ? - ((-val ) / div) : (val + div - 1) / div;
918 }
919#else
920 #define ecb_div_rd(val,div) ((val) < 0 ? - ((-(val) + (div) - 1) / (div)) : ((val) ) / (div))
921 #define ecb_div_ru(val,div) ((val) < 0 ? - ((-(val) ) / (div)) : ((val) + (div) - 1) / (div))
922#endif
923
924#if ecb_cplusplus_does_not_suck
925 /* does not work for local types (http://www.open-std.org/jtc1/sc22/wg21/docs/papers/2008/n2657.htm) */
926 template<typename T, int N>
927 static inline int ecb_array_length (const T (&arr)[N])
928 {
929 return N;
930 }
931#else
932 #define ecb_array_length(name) (sizeof (name) / sizeof (name [0]))
933#endif
934
935#endif
936
937/* ECB.H END */
938
939#if ECB_MEMORY_FENCE_NEEDS_PTHREADS
940/* if your architecture doesn't need memory fences, e.g. because it is
941 * single-cpu/core, or if you use libev in a project that doesn't use libev
942 * from multiple threads, then you can define ECB_AVOID_PTHREADS when compiling
943 * libev, in which cases the memory fences become nops.
944 * alternatively, you can remove this #error and link against libpthread,
945 * which will then provide the memory fences.
946 */
947# error "memory fences not defined for your architecture, please report"
948#endif
949
950#ifndef ECB_MEMORY_FENCE
951# define ECB_MEMORY_FENCE do { } while (0)
952# define ECB_MEMORY_FENCE_ACQUIRE ECB_MEMORY_FENCE
953# define ECB_MEMORY_FENCE_RELEASE ECB_MEMORY_FENCE
954#endif
955
956#define expect_false(cond) ecb_expect_false (cond)
957#define expect_true(cond) ecb_expect_true (cond)
958#define noinline ecb_noinline
959
476#define inline_size static inline 960#define inline_size ecb_inline
477 961
478#if EV_FEATURE_CODE 962#if EV_FEATURE_CODE
479# define inline_speed static inline 963# define inline_speed ecb_inline
480#else 964#else
481# define inline_speed static noinline 965# define inline_speed static noinline
482#endif 966#endif
483 967
484#define NUMPRI (EV_MAXPRI - EV_MINPRI + 1) 968#define NUMPRI (EV_MAXPRI - EV_MINPRI + 1)
… …
523# include "ev_win32.c" 1007# include "ev_win32.c"
524#endif 1008#endif
525 1009
526/*****************************************************************************/ 1010/*****************************************************************************/
527 1011
1012/* define a suitable floor function (only used by periodics atm) */
1013
1014#if EV_USE_FLOOR
1015# include <math.h>
1016# define ev_floor(v) floor (v)
1017#else
1018
1019#include <float.h>
1020
1021/* a floor() replacement function, should be independent of ev_tstamp type */
1022static ev_tstamp noinline
1023ev_floor (ev_tstamp v)
1024{
1025 /* the choice of shift factor is not terribly important */
1026#if FLT_RADIX != 2 /* assume FLT_RADIX == 10 */
1027 const ev_tstamp shift = sizeof (unsigned long) >= 8 ? 10000000000000000000. : 1000000000.;
1028#else
1029 const ev_tstamp shift = sizeof (unsigned long) >= 8 ? 18446744073709551616. : 4294967296.;
1030#endif
1031
1032 /* argument too large for an unsigned long? */
1033 if (expect_false (v >= shift))
1034 {
1035 ev_tstamp f;
1036
1037 if (v == v - 1.)
1038 return v; /* very large number */
1039
1040 f = shift * ev_floor (v * (1. / shift));
1041 return f + ev_floor (v - f);
1042 }
1043
1044 /* special treatment for negative args? */
1045 if (expect_false (v < 0.))
1046 {
1047 ev_tstamp f = -ev_floor (-v);
1048
1049 return f - (f == v ? 0 : 1);
1050 }
1051
1052 /* fits into an unsigned long */
1053 return (unsigned long)v;
1054}
1055
1056#endif
1057
1058/*****************************************************************************/
1059
528#ifdef __linux 1060#ifdef __linux
529# include <sys/utsname.h> 1061# include <sys/utsname.h>
530#endif 1062#endif
531 1063
532static unsigned int noinline 1064static unsigned int noinline ecb_cold
533ev_linux_version (void) 1065ev_linux_version (void)
534{ 1066{
535#ifdef __linux 1067#ifdef __linux
536 unsigned int v = 0; 1068 unsigned int v = 0;
537 struct utsname buf; 1069 struct utsname buf;
… …
566} 1098}
567 1099
568/*****************************************************************************/ 1100/*****************************************************************************/
569 1101
570#if EV_AVOID_STDIO 1102#if EV_AVOID_STDIO
571static void noinline 1103static void noinline ecb_cold
572ev_printerr (const char *msg) 1104ev_printerr (const char *msg)
573{ 1105{
574 write (STDERR_FILENO, msg, strlen (msg)); 1106 write (STDERR_FILENO, msg, strlen (msg));
575} 1107}
576#endif 1108#endif
577 1109
578static void (*syserr_cb)(const char *msg); 1110static void (*syserr_cb)(const char *msg) EV_THROW;
579 1111
580void 1112void ecb_cold
581ev_set_syserr_cb (void (*cb)(const char *msg)) 1113ev_set_syserr_cb (void (*cb)(const char *msg)) EV_THROW
582{ 1114{
583 syserr_cb = cb; 1115 syserr_cb = cb;
584} 1116}
585 1117
586static void noinline 1118static void noinline ecb_cold
587ev_syserr (const char *msg) 1119ev_syserr (const char *msg)
588{ 1120{
589 if (!msg) 1121 if (!msg)
590 msg = "(libev) system error"; 1122 msg = "(libev) system error";
591 1123
… …
622 free (ptr); 1154 free (ptr);
623 return 0; 1155 return 0;
624#endif 1156#endif
625} 1157}
626 1158
627static void *(*alloc)(void *ptr, long size) = ev_realloc_emul; 1159static void *(*alloc)(void *ptr, long size) EV_THROW = ev_realloc_emul;
628 1160
629void 1161void ecb_cold
630ev_set_allocator (void *(*cb)(void *ptr, long size)) 1162ev_set_allocator (void *(*cb)(void *ptr, long size)) EV_THROW
631{ 1163{
632 alloc = cb; 1164 alloc = cb;
633} 1165}
634 1166
635inline_speed void * 1167inline_speed void *
… …
723 #undef VAR 1255 #undef VAR
724 }; 1256 };
725 #include "ev_wrap.h" 1257 #include "ev_wrap.h"
726 1258
727 static struct ev_loop default_loop_struct; 1259 static struct ev_loop default_loop_struct;
728 struct ev_loop *ev_default_loop_ptr; 1260 EV_API_DECL struct ev_loop *ev_default_loop_ptr = 0; /* needs to be initialised to make it a definition despite extern */
729 1261
730#else 1262#else
731 1263
732 ev_tstamp ev_rt_now; 1264 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; 1265 #define VAR(name,decl) static decl;
734 #include "ev_vars.h" 1266 #include "ev_vars.h"
735 #undef VAR 1267 #undef VAR
736 1268
737 static int ev_default_loop_ptr; 1269 static int ev_default_loop_ptr;
… …
752 1284
753/*****************************************************************************/ 1285/*****************************************************************************/
754 1286
755#ifndef EV_HAVE_EV_TIME 1287#ifndef EV_HAVE_EV_TIME
756ev_tstamp 1288ev_tstamp
757ev_time (void) 1289ev_time (void) EV_THROW
758{ 1290{
759#if EV_USE_REALTIME 1291#if EV_USE_REALTIME
760 if (expect_true (have_realtime)) 1292 if (expect_true (have_realtime))
761 { 1293 {
762 struct timespec ts; 1294 struct timespec ts;
… …
786 return ev_time (); 1318 return ev_time ();
787} 1319}
788 1320
789#if EV_MULTIPLICITY 1321#if EV_MULTIPLICITY
790ev_tstamp 1322ev_tstamp
791ev_now (EV_P) 1323ev_now (EV_P) EV_THROW
792{ 1324{
793 return ev_rt_now; 1325 return ev_rt_now;
794} 1326}
795#endif 1327#endif
796 1328
797void 1329void
798ev_sleep (ev_tstamp delay) 1330ev_sleep (ev_tstamp delay) EV_THROW
799{ 1331{
800 if (delay > 0.) 1332 if (delay > 0.)
801 { 1333 {
802#if EV_USE_NANOSLEEP 1334#if EV_USE_NANOSLEEP
803 struct timespec ts; 1335 struct timespec ts;
804 1336
805 EV_TS_SET (ts, delay); 1337 EV_TS_SET (ts, delay);
806 nanosleep (&ts, 0); 1338 nanosleep (&ts, 0);
807#elif defined(_WIN32) 1339#elif defined _WIN32
808 Sleep ((unsigned long)(delay * 1e3)); 1340 Sleep ((unsigned long)(delay * 1e3));
809#else 1341#else
810 struct timeval tv; 1342 struct timeval tv;
811 1343
812 /* here we rely on sys/time.h + sys/types.h + unistd.h providing select */ 1344 /* here we rely on sys/time.h + sys/types.h + unistd.h providing select */
… …
816 select (0, 0, 0, 0, &tv); 1348 select (0, 0, 0, 0, &tv);
817#endif 1349#endif
818 } 1350 }
819} 1351}
820 1352
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/*****************************************************************************/ 1353/*****************************************************************************/
830 1354
831#define MALLOC_ROUND 4096 /* prefer to allocate in chunks of this size, must be 2**n and >> 4 longs */ 1355#define MALLOC_ROUND 4096 /* prefer to allocate in chunks of this size, must be 2**n and >> 4 longs */
832 1356
833/* find a suitable new size for the given array, */ 1357/* find a suitable new size for the given array, */
… …
839 1363
840 do 1364 do
841 ncur <<= 1; 1365 ncur <<= 1;
842 while (cnt > ncur); 1366 while (cnt > ncur);
843 1367
844 /* if size is large, round to MALLOC_ROUND - 4 * longs to accomodate malloc overhead */ 1368 /* if size is large, round to MALLOC_ROUND - 4 * longs to accommodate malloc overhead */
845 if (elem * ncur > MALLOC_ROUND - sizeof (void *) * 4) 1369 if (elem * ncur > MALLOC_ROUND - sizeof (void *) * 4)
846 { 1370 {
847 ncur *= elem; 1371 ncur *= elem;
848 ncur = (ncur + elem + (MALLOC_ROUND - 1) + sizeof (void *) * 4) & ~(MALLOC_ROUND - 1); 1372 ncur = (ncur + elem + (MALLOC_ROUND - 1) + sizeof (void *) * 4) & ~(MALLOC_ROUND - 1);
849 ncur = ncur - sizeof (void *) * 4; 1373 ncur = ncur - sizeof (void *) * 4;
… …
851 } 1375 }
852 1376
853 return ncur; 1377 return ncur;
854} 1378}
855 1379
856static noinline void * 1380static void * noinline ecb_cold
857array_realloc (int elem, void *base, int *cur, int cnt) 1381array_realloc (int elem, void *base, int *cur, int cnt)
858{ 1382{
859 *cur = array_nextsize (elem, *cur, cnt); 1383 *cur = array_nextsize (elem, *cur, cnt);
860 return ev_realloc (base, elem * *cur); 1384 return ev_realloc (base, elem * *cur);
861} 1385}
… …
864 memset ((void *)(base), 0, sizeof (*(base)) * (count)) 1388 memset ((void *)(base), 0, sizeof (*(base)) * (count))
865 1389
866#define array_needsize(type,base,cur,cnt,init) \ 1390#define array_needsize(type,base,cur,cnt,init) \
867 if (expect_false ((cnt) > (cur))) \ 1391 if (expect_false ((cnt) > (cur))) \
868 { \ 1392 { \
869 int ocur_ = (cur); \ 1393 int ecb_unused ocur_ = (cur); \
870 (base) = (type *)array_realloc \ 1394 (base) = (type *)array_realloc \
871 (sizeof (type), (base), &(cur), (cnt)); \ 1395 (sizeof (type), (base), &(cur), (cnt)); \
872 init ((base) + (ocur_), (cur) - ocur_); \ 1396 init ((base) + (ocur_), (cur) - ocur_); \
873 } 1397 }
874 1398
… …
892pendingcb (EV_P_ ev_prepare *w, int revents) 1416pendingcb (EV_P_ ev_prepare *w, int revents)
893{ 1417{
894} 1418}
895 1419
896void noinline 1420void noinline
897ev_feed_event (EV_P_ void *w, int revents) 1421ev_feed_event (EV_P_ void *w, int revents) EV_THROW
898{ 1422{
899 W w_ = (W)w; 1423 W w_ = (W)w;
900 int pri = ABSPRI (w_); 1424 int pri = ABSPRI (w_);
901 1425
902 if (expect_false (w_->pending)) 1426 if (expect_false (w_->pending))
… …
961 if (expect_true (!anfd->reify)) 1485 if (expect_true (!anfd->reify))
962 fd_event_nocheck (EV_A_ fd, revents); 1486 fd_event_nocheck (EV_A_ fd, revents);
963} 1487}
964 1488
965void 1489void
966ev_feed_fd_event (EV_P_ int fd, int revents) 1490ev_feed_fd_event (EV_P_ int fd, int revents) EV_THROW
967{ 1491{
968 if (fd >= 0 && fd < anfdmax) 1492 if (fd >= 0 && fd < anfdmax)
969 fd_event_nocheck (EV_A_ fd, revents); 1493 fd_event_nocheck (EV_A_ fd, revents);
970} 1494}
971 1495
… …
974inline_size void 1498inline_size void
975fd_reify (EV_P) 1499fd_reify (EV_P)
976{ 1500{
977 int i; 1501 int i;
978 1502
1503#if EV_SELECT_IS_WINSOCKET || EV_USE_IOCP
1504 for (i = 0; i < fdchangecnt; ++i)
1505 {
1506 int fd = fdchanges [i];
1507 ANFD *anfd = anfds + fd;
1508
1509 if (anfd->reify & EV__IOFDSET && anfd->head)
1510 {
1511 SOCKET handle = EV_FD_TO_WIN32_HANDLE (fd);
1512
1513 if (handle != anfd->handle)
1514 {
1515 unsigned long arg;
1516
1517 assert (("libev: only socket fds supported in this configuration", ioctlsocket (handle, FIONREAD, &arg) == 0));
1518
1519 /* handle changed, but fd didn't - we need to do it in two steps */
1520 backend_modify (EV_A_ fd, anfd->events, 0);
1521 anfd->events = 0;
1522 anfd->handle = handle;
1523 }
1524 }
1525 }
1526#endif
1527
979 for (i = 0; i < fdchangecnt; ++i) 1528 for (i = 0; i < fdchangecnt; ++i)
980 { 1529 {
981 int fd = fdchanges [i]; 1530 int fd = fdchanges [i];
982 ANFD *anfd = anfds + fd; 1531 ANFD *anfd = anfds + fd;
983 ev_io *w; 1532 ev_io *w;
… …
985 unsigned char o_events = anfd->events; 1534 unsigned char o_events = anfd->events;
986 unsigned char o_reify = anfd->reify; 1535 unsigned char o_reify = anfd->reify;
987 1536
988 anfd->reify = 0; 1537 anfd->reify = 0;
989 1538
990#if EV_SELECT_IS_WINSOCKET || EV_USE_IOCP
991 if (o_reify & EV__IOFDSET)
992 {
993 unsigned long arg;
994 anfd->handle = EV_FD_TO_WIN32_HANDLE (fd);
995 assert (("libev: only socket fds supported in this configuration", ioctlsocket (anfd->handle, FIONREAD, &arg) == 0));
996 printf ("oi %d %x\n", fd, anfd->handle);//D
997 }
998#endif
999
1000 /*if (expect_true (o_reify & EV_ANFD_REIFY)) probably a deoptimisation */ 1539 /*if (expect_true (o_reify & EV_ANFD_REIFY)) probably a deoptimisation */
1001 { 1540 {
1002 anfd->events = 0; 1541 anfd->events = 0;
1003 1542
1004 for (w = (ev_io *)anfd->head; w; w = (ev_io *)((WL)w)->next) 1543 for (w = (ev_io *)anfd->head; w; w = (ev_io *)((WL)w)->next)
… …
1029 fdchanges [fdchangecnt - 1] = fd; 1568 fdchanges [fdchangecnt - 1] = fd;
1030 } 1569 }
1031} 1570}
1032 1571
1033/* the given fd is invalid/unusable, so make sure it doesn't hurt us anymore */ 1572/* the given fd is invalid/unusable, so make sure it doesn't hurt us anymore */
1034inline_speed void 1573inline_speed void ecb_cold
1035fd_kill (EV_P_ int fd) 1574fd_kill (EV_P_ int fd)
1036{ 1575{
1037 ev_io *w; 1576 ev_io *w;
1038 1577
1039 while ((w = (ev_io *)anfds [fd].head)) 1578 while ((w = (ev_io *)anfds [fd].head))
… …
1042 ev_feed_event (EV_A_ (W)w, EV_ERROR | EV_READ | EV_WRITE); 1581 ev_feed_event (EV_A_ (W)w, EV_ERROR | EV_READ | EV_WRITE);
1043 } 1582 }
1044} 1583}
1045 1584
1046/* check whether the given fd is actually valid, for error recovery */ 1585/* check whether the given fd is actually valid, for error recovery */
1047inline_size int 1586inline_size int ecb_cold
1048fd_valid (int fd) 1587fd_valid (int fd)
1049{ 1588{
1050#ifdef _WIN32 1589#ifdef _WIN32
1051 return EV_FD_TO_WIN32_HANDLE (fd) != -1; 1590 return EV_FD_TO_WIN32_HANDLE (fd) != -1;
1052#else 1591#else
1053 return fcntl (fd, F_GETFD) != -1; 1592 return fcntl (fd, F_GETFD) != -1;
1054#endif 1593#endif
1055} 1594}
1056 1595
1057/* called on EBADF to verify fds */ 1596/* called on EBADF to verify fds */
1058static void noinline 1597static void noinline ecb_cold
1059fd_ebadf (EV_P) 1598fd_ebadf (EV_P)
1060{ 1599{
1061 int fd; 1600 int fd;
1062 1601
1063 for (fd = 0; fd < anfdmax; ++fd) 1602 for (fd = 0; fd < anfdmax; ++fd)
… …
1065 if (!fd_valid (fd) && errno == EBADF) 1604 if (!fd_valid (fd) && errno == EBADF)
1066 fd_kill (EV_A_ fd); 1605 fd_kill (EV_A_ fd);
1067} 1606}
1068 1607
1069/* called on ENOMEM in select/poll to kill some fds and retry */ 1608/* called on ENOMEM in select/poll to kill some fds and retry */
1070static void noinline 1609static void noinline ecb_cold
1071fd_enomem (EV_P) 1610fd_enomem (EV_P)
1072{ 1611{
1073 int fd; 1612 int fd;
1074 1613
1075 for (fd = anfdmax; fd--; ) 1614 for (fd = anfdmax; fd--; )
… …
1270 1809
1271/*****************************************************************************/ 1810/*****************************************************************************/
1272 1811
1273#if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE 1812#if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE
1274 1813
1275static void noinline 1814static void noinline ecb_cold
1276evpipe_init (EV_P) 1815evpipe_init (EV_P)
1277{ 1816{
1278 if (!ev_is_active (&pipe_w)) 1817 if (!ev_is_active (&pipe_w))
1279 { 1818 {
1280# if EV_USE_EVENTFD 1819# if EV_USE_EVENTFD
… …
1302 ev_io_start (EV_A_ &pipe_w); 1841 ev_io_start (EV_A_ &pipe_w);
1303 ev_unref (EV_A); /* watcher should not keep loop alive */ 1842 ev_unref (EV_A); /* watcher should not keep loop alive */
1304 } 1843 }
1305} 1844}
1306 1845
1307inline_size void 1846inline_speed void
1308evpipe_write (EV_P_ EV_ATOMIC_T *flag) 1847evpipe_write (EV_P_ EV_ATOMIC_T *flag)
1309{ 1848{
1310 if (!*flag) 1849 if (expect_true (*flag))
1850 return;
1851
1852 *flag = 1;
1853
1854 ECB_MEMORY_FENCE_RELEASE; /* make sure flag is visible before the wakeup */
1855
1856 pipe_write_skipped = 1;
1857
1858 ECB_MEMORY_FENCE; /* make sure pipe_write_skipped is visible before we check pipe_write_wanted */
1859
1860 if (pipe_write_wanted)
1311 { 1861 {
1862 int old_errno;
1863
1864 pipe_write_skipped = 0; /* just an optimisation, no fence needed */
1865
1312 int old_errno = errno; /* save errno because write might clobber it */ 1866 old_errno = errno; /* save errno because write will clobber it */
1313 char dummy;
1314
1315 *flag = 1;
1316 1867
1317#if EV_USE_EVENTFD 1868#if EV_USE_EVENTFD
1318 if (evfd >= 0) 1869 if (evfd >= 0)
1319 { 1870 {
1320 uint64_t counter = 1; 1871 uint64_t counter = 1;
1321 write (evfd, &counter, sizeof (uint64_t)); 1872 write (evfd, &counter, sizeof (uint64_t));
1322 } 1873 }
1323 else 1874 else
1324#endif 1875#endif
1876 {
1325 /* win32 people keep sending patches that change this write() to send() */ 1877 /* win32 people keep sending patches that change this write() to send() */
1326 /* and then run away. but send() is wrong, it wants a socket handle on win32 */ 1878 /* and then run away. but send() is wrong, it wants a socket handle on win32 */
1327 /* so when you think this write should be a send instead, please find out */ 1879 /* so when you think this write should be a send instead, please find out */
1328 /* where your send() is from - it's definitely not the microsoft send, and */ 1880 /* where your send() is from - it's definitely not the microsoft send, and */
1329 /* tell me. thank you. */ 1881 /* tell me. thank you. */
1882 /* it might be that your problem is that your environment needs EV_USE_WSASOCKET */
1883 /* check the ev documentation on how to use this flag */
1330 write (evpipe [1], &dummy, 1); 1884 write (evpipe [1], &(evpipe [1]), 1);
1885 }
1331 1886
1332 errno = old_errno; 1887 errno = old_errno;
1333 } 1888 }
1334} 1889}
1335 1890
… …
1338static void 1893static void
1339pipecb (EV_P_ ev_io *iow, int revents) 1894pipecb (EV_P_ ev_io *iow, int revents)
1340{ 1895{
1341 int i; 1896 int i;
1342 1897
1898 if (revents & EV_READ)
1899 {
1343#if EV_USE_EVENTFD 1900#if EV_USE_EVENTFD
1344 if (evfd >= 0) 1901 if (evfd >= 0)
1345 { 1902 {
1346 uint64_t counter; 1903 uint64_t counter;
1347 read (evfd, &counter, sizeof (uint64_t)); 1904 read (evfd, &counter, sizeof (uint64_t));
1348 } 1905 }
1349 else 1906 else
1350#endif 1907#endif
1351 { 1908 {
1352 char dummy; 1909 char dummy;
1353 /* see discussion in evpipe_write when you think this read should be recv in win32 */ 1910 /* see discussion in evpipe_write when you think this read should be recv in win32 */
1354 read (evpipe [0], &dummy, 1); 1911 read (evpipe [0], &dummy, 1);
1912 }
1355 } 1913 }
1914
1915 pipe_write_skipped = 0;
1356 1916
1357#if EV_SIGNAL_ENABLE 1917#if EV_SIGNAL_ENABLE
1358 if (sig_pending) 1918 if (sig_pending)
1359 { 1919 {
1360 sig_pending = 0; 1920 sig_pending = 0;
1361 1921
1362 for (i = EV_NSIG - 1; i--; ) 1922 for (i = EV_NSIG - 1; i--; )
1363 if (expect_false (signals [i].pending)) 1923 if (expect_false (signals [i].pending))
1364 ev_feed_signal_event (EV_A_ i + 1); 1924 ev_feed_signal_event (EV_A_ i + 1);
… …
1381} 1941}
1382 1942
1383/*****************************************************************************/ 1943/*****************************************************************************/
1384 1944
1385void 1945void
1386ev_feed_signal (int signum) 1946ev_feed_signal (int signum) EV_THROW
1387{ 1947{
1388#if EV_MULTIPLICITY 1948#if EV_MULTIPLICITY
1389 EV_P = signals [signum - 1].loop; 1949 EV_P = signals [signum - 1].loop;
1390 1950
1391 if (!EV_A) 1951 if (!EV_A)
1392 return; 1952 return;
1393#endif 1953#endif
1394 1954
1955 if (!ev_active (&pipe_w))
1956 return;
1957
1395 signals [signum - 1].pending = 1; 1958 signals [signum - 1].pending = 1;
1396 evpipe_write (EV_A_ &sig_pending); 1959 evpipe_write (EV_A_ &sig_pending);
1397} 1960}
1398 1961
1399static void 1962static void
… …
1405 1968
1406 ev_feed_signal (signum); 1969 ev_feed_signal (signum);
1407} 1970}
1408 1971
1409void noinline 1972void noinline
1410ev_feed_signal_event (EV_P_ int signum) 1973ev_feed_signal_event (EV_P_ int signum) EV_THROW
1411{ 1974{
1412 WL w; 1975 WL w;
1413 1976
1414 if (expect_false (signum <= 0 || signum > EV_NSIG)) 1977 if (expect_false (signum <= 0 || signum > EV_NSIG))
1415 return; 1978 return;
… …
1530#endif 2093#endif
1531#if EV_USE_SELECT 2094#if EV_USE_SELECT
1532# include "ev_select.c" 2095# include "ev_select.c"
1533#endif 2096#endif
1534 2097
1535int 2098int ecb_cold
1536ev_version_major (void) 2099ev_version_major (void) EV_THROW
1537{ 2100{
1538 return EV_VERSION_MAJOR; 2101 return EV_VERSION_MAJOR;
1539} 2102}
1540 2103
1541int 2104int ecb_cold
1542ev_version_minor (void) 2105ev_version_minor (void) EV_THROW
1543{ 2106{
1544 return EV_VERSION_MINOR; 2107 return EV_VERSION_MINOR;
1545} 2108}
1546 2109
1547/* return true if we are running with elevated privileges and should ignore env variables */ 2110/* return true if we are running with elevated privileges and should ignore env variables */
1548int inline_size 2111int inline_size ecb_cold
1549enable_secure (void) 2112enable_secure (void)
1550{ 2113{
1551#ifdef _WIN32 2114#ifdef _WIN32
1552 return 0; 2115 return 0;
1553#else 2116#else
1554 return getuid () != geteuid () 2117 return getuid () != geteuid ()
1555 || getgid () != getegid (); 2118 || getgid () != getegid ();
1556#endif 2119#endif
1557} 2120}
1558 2121
1559unsigned int 2122unsigned int ecb_cold
1560ev_supported_backends (void) 2123ev_supported_backends (void) EV_THROW
1561{ 2124{
1562 unsigned int flags = 0; 2125 unsigned int flags = 0;
1563 2126
1564 if (EV_USE_PORT ) flags |= EVBACKEND_PORT; 2127 if (EV_USE_PORT ) flags |= EVBACKEND_PORT;
1565 if (EV_USE_KQUEUE) flags |= EVBACKEND_KQUEUE; 2128 if (EV_USE_KQUEUE) flags |= EVBACKEND_KQUEUE;
… …
1568 if (EV_USE_SELECT) flags |= EVBACKEND_SELECT; 2131 if (EV_USE_SELECT) flags |= EVBACKEND_SELECT;
1569 2132
1570 return flags; 2133 return flags;
1571} 2134}
1572 2135
1573unsigned int 2136unsigned int ecb_cold
1574ev_recommended_backends (void) 2137ev_recommended_backends (void) EV_THROW
1575{ 2138{
1576 unsigned int flags = ev_supported_backends (); 2139 unsigned int flags = ev_supported_backends ();
1577 2140
1578#ifndef __NetBSD__ 2141#ifndef __NetBSD__
1579 /* kqueue is borked on everything but netbsd apparently */ 2142 /* kqueue is borked on everything but netbsd apparently */
… …
1590#endif 2153#endif
1591 2154
1592 return flags; 2155 return flags;
1593} 2156}
1594 2157
1595unsigned int 2158unsigned int ecb_cold
1596ev_embeddable_backends (void) 2159ev_embeddable_backends (void) EV_THROW
1597{ 2160{
1598 int flags = EVBACKEND_EPOLL | EVBACKEND_KQUEUE | EVBACKEND_PORT; 2161 int flags = EVBACKEND_EPOLL | EVBACKEND_KQUEUE | EVBACKEND_PORT;
1599 2162
1600 /* epoll embeddability broken on all linux versions up to at least 2.6.23 */ 2163 /* epoll embeddability broken on all linux versions up to at least 2.6.23 */
1601 if (ev_linux_version () < 0x020620) /* disable it on linux < 2.6.32 */ 2164 if (ev_linux_version () < 0x020620) /* disable it on linux < 2.6.32 */
… …
1603 2166
1604 return flags; 2167 return flags;
1605} 2168}
1606 2169
1607unsigned int 2170unsigned int
1608ev_backend (EV_P) 2171ev_backend (EV_P) EV_THROW
1609{ 2172{
1610 return backend; 2173 return backend;
1611} 2174}
1612 2175
1613#if EV_FEATURE_API 2176#if EV_FEATURE_API
1614unsigned int 2177unsigned int
1615ev_iteration (EV_P) 2178ev_iteration (EV_P) EV_THROW
1616{ 2179{
1617 return loop_count; 2180 return loop_count;
1618} 2181}
1619 2182
1620unsigned int 2183unsigned int
1621ev_depth (EV_P) 2184ev_depth (EV_P) EV_THROW
1622{ 2185{
1623 return loop_depth; 2186 return loop_depth;
1624} 2187}
1625 2188
1626void 2189void
1627ev_set_io_collect_interval (EV_P_ ev_tstamp interval) 2190ev_set_io_collect_interval (EV_P_ ev_tstamp interval) EV_THROW
1628{ 2191{
1629 io_blocktime = interval; 2192 io_blocktime = interval;
1630} 2193}
1631 2194
1632void 2195void
1633ev_set_timeout_collect_interval (EV_P_ ev_tstamp interval) 2196ev_set_timeout_collect_interval (EV_P_ ev_tstamp interval) EV_THROW
1634{ 2197{
1635 timeout_blocktime = interval; 2198 timeout_blocktime = interval;
1636} 2199}
1637 2200
1638void 2201void
1639ev_set_userdata (EV_P_ void *data) 2202ev_set_userdata (EV_P_ void *data) EV_THROW
1640{ 2203{
1641 userdata = data; 2204 userdata = data;
1642} 2205}
1643 2206
1644void * 2207void *
1645ev_userdata (EV_P) 2208ev_userdata (EV_P) EV_THROW
1646{ 2209{
1647 return userdata; 2210 return userdata;
1648} 2211}
1649 2212
2213void
1650void ev_set_invoke_pending_cb (EV_P_ void (*invoke_pending_cb)(EV_P)) 2214ev_set_invoke_pending_cb (EV_P_ void (*invoke_pending_cb)(EV_P)) EV_THROW
1651{ 2215{
1652 invoke_cb = invoke_pending_cb; 2216 invoke_cb = invoke_pending_cb;
1653} 2217}
1654 2218
2219void
1655void ev_set_loop_release_cb (EV_P_ void (*release)(EV_P), void (*acquire)(EV_P)) 2220ev_set_loop_release_cb (EV_P_ void (*release)(EV_P) EV_THROW, void (*acquire)(EV_P) EV_THROW) EV_THROW
1656{ 2221{
1657 release_cb = release; 2222 release_cb = release;
1658 acquire_cb = acquire; 2223 acquire_cb = acquire;
1659} 2224}
1660#endif 2225#endif
1661 2226
1662/* initialise a loop structure, must be zero-initialised */ 2227/* initialise a loop structure, must be zero-initialised */
1663static void noinline 2228static void noinline ecb_cold
1664loop_init (EV_P_ unsigned int flags) 2229loop_init (EV_P_ unsigned int flags) EV_THROW
1665{ 2230{
1666 if (!backend) 2231 if (!backend)
1667 { 2232 {
1668 origflags = flags; 2233 origflags = flags;
1669 2234
… …
1696 if (!(flags & EVFLAG_NOENV) 2261 if (!(flags & EVFLAG_NOENV)
1697 && !enable_secure () 2262 && !enable_secure ()
1698 && getenv ("LIBEV_FLAGS")) 2263 && getenv ("LIBEV_FLAGS"))
1699 flags = atoi (getenv ("LIBEV_FLAGS")); 2264 flags = atoi (getenv ("LIBEV_FLAGS"));
1700 2265
1701 ev_rt_now = ev_time (); 2266 ev_rt_now = ev_time ();
1702 mn_now = get_clock (); 2267 mn_now = get_clock ();
1703 now_floor = mn_now; 2268 now_floor = mn_now;
1704 rtmn_diff = ev_rt_now - mn_now; 2269 rtmn_diff = ev_rt_now - mn_now;
1705#if EV_FEATURE_API 2270#if EV_FEATURE_API
1706 invoke_cb = ev_invoke_pending; 2271 invoke_cb = ev_invoke_pending;
1707#endif 2272#endif
1708 2273
1709 io_blocktime = 0.; 2274 io_blocktime = 0.;
1710 timeout_blocktime = 0.; 2275 timeout_blocktime = 0.;
1711 backend = 0; 2276 backend = 0;
1712 backend_fd = -1; 2277 backend_fd = -1;
1713 sig_pending = 0; 2278 sig_pending = 0;
1714#if EV_ASYNC_ENABLE 2279#if EV_ASYNC_ENABLE
1715 async_pending = 0; 2280 async_pending = 0;
1716#endif 2281#endif
2282 pipe_write_skipped = 0;
2283 pipe_write_wanted = 0;
1717#if EV_USE_INOTIFY 2284#if EV_USE_INOTIFY
1718 fs_fd = flags & EVFLAG_NOINOTIFY ? -1 : -2; 2285 fs_fd = flags & EVFLAG_NOINOTIFY ? -1 : -2;
1719#endif 2286#endif
1720#if EV_USE_SIGNALFD 2287#if EV_USE_SIGNALFD
1721 sigfd = flags & EVFLAG_SIGNALFD ? -2 : -1; 2288 sigfd = flags & EVFLAG_SIGNALFD ? -2 : -1;
1722#endif 2289#endif
1723 2290
1724 if (!(flags & EVBACKEND_MASK)) 2291 if (!(flags & EVBACKEND_MASK))
1725 flags |= ev_recommended_backends (); 2292 flags |= ev_recommended_backends ();
1726 2293
… …
1751#endif 2318#endif
1752 } 2319 }
1753} 2320}
1754 2321
1755/* free up a loop structure */ 2322/* free up a loop structure */
1756void 2323void ecb_cold
1757ev_loop_destroy (EV_P) 2324ev_loop_destroy (EV_P)
1758{ 2325{
1759 int i; 2326 int i;
1760 2327
1761#if EV_MULTIPLICITY 2328#if EV_MULTIPLICITY
… …
1891 infy_fork (EV_A); 2458 infy_fork (EV_A);
1892#endif 2459#endif
1893 2460
1894 if (ev_is_active (&pipe_w)) 2461 if (ev_is_active (&pipe_w))
1895 { 2462 {
1896 /* this "locks" the handlers against writing to the pipe */ 2463 /* pipe_write_wanted must be false now, so modifying fd vars should be safe */
1897 /* while we modify the fd vars */
1898 sig_pending = 1;
1899#if EV_ASYNC_ENABLE
1900 async_pending = 1;
1901#endif
1902 2464
1903 ev_ref (EV_A); 2465 ev_ref (EV_A);
1904 ev_io_stop (EV_A_ &pipe_w); 2466 ev_io_stop (EV_A_ &pipe_w);
1905 2467
1906#if EV_USE_EVENTFD 2468#if EV_USE_EVENTFD
… …
1924 postfork = 0; 2486 postfork = 0;
1925} 2487}
1926 2488
1927#if EV_MULTIPLICITY 2489#if EV_MULTIPLICITY
1928 2490
1929struct ev_loop * 2491struct ev_loop * ecb_cold
1930ev_loop_new (unsigned int flags) 2492ev_loop_new (unsigned int flags) EV_THROW
1931{ 2493{
1932 EV_P = (struct ev_loop *)ev_malloc (sizeof (struct ev_loop)); 2494 EV_P = (struct ev_loop *)ev_malloc (sizeof (struct ev_loop));
1933 2495
1934 memset (EV_A, 0, sizeof (struct ev_loop)); 2496 memset (EV_A, 0, sizeof (struct ev_loop));
1935 loop_init (EV_A_ flags); 2497 loop_init (EV_A_ flags);
… …
1942} 2504}
1943 2505
1944#endif /* multiplicity */ 2506#endif /* multiplicity */
1945 2507
1946#if EV_VERIFY 2508#if EV_VERIFY
1947static void noinline 2509static void noinline ecb_cold
1948verify_watcher (EV_P_ W w) 2510verify_watcher (EV_P_ W w)
1949{ 2511{
1950 assert (("libev: watcher has invalid priority", ABSPRI (w) >= 0 && ABSPRI (w) < NUMPRI)); 2512 assert (("libev: watcher has invalid priority", ABSPRI (w) >= 0 && ABSPRI (w) < NUMPRI));
1951 2513
1952 if (w->pending) 2514 if (w->pending)
1953 assert (("libev: pending watcher not on pending queue", pendings [ABSPRI (w)][w->pending - 1].w == w)); 2515 assert (("libev: pending watcher not on pending queue", pendings [ABSPRI (w)][w->pending - 1].w == w));
1954} 2516}
1955 2517
1956static void noinline 2518static void noinline ecb_cold
1957verify_heap (EV_P_ ANHE *heap, int N) 2519verify_heap (EV_P_ ANHE *heap, int N)
1958{ 2520{
1959 int i; 2521 int i;
1960 2522
1961 for (i = HEAP0; i < N + HEAP0; ++i) 2523 for (i = HEAP0; i < N + HEAP0; ++i)
… …
1966 2528
1967 verify_watcher (EV_A_ (W)ANHE_w (heap [i])); 2529 verify_watcher (EV_A_ (W)ANHE_w (heap [i]));
1968 } 2530 }
1969} 2531}
1970 2532
1971static void noinline 2533static void noinline ecb_cold
1972array_verify (EV_P_ W *ws, int cnt) 2534array_verify (EV_P_ W *ws, int cnt)
1973{ 2535{
1974 while (cnt--) 2536 while (cnt--)
1975 { 2537 {
1976 assert (("libev: active index mismatch", ev_active (ws [cnt]) == cnt + 1)); 2538 assert (("libev: active index mismatch", ev_active (ws [cnt]) == cnt + 1));
… …
1978 } 2540 }
1979} 2541}
1980#endif 2542#endif
1981 2543
1982#if EV_FEATURE_API 2544#if EV_FEATURE_API
1983void 2545void ecb_cold
1984ev_verify (EV_P) 2546ev_verify (EV_P) EV_THROW
1985{ 2547{
1986#if EV_VERIFY 2548#if EV_VERIFY
1987 int i; 2549 int i;
1988 WL w; 2550 WL w;
1989 2551
… …
2054#endif 2616#endif
2055} 2617}
2056#endif 2618#endif
2057 2619
2058#if EV_MULTIPLICITY 2620#if EV_MULTIPLICITY
2059struct ev_loop * 2621struct ev_loop * ecb_cold
2060#else 2622#else
2061int 2623int
2062#endif 2624#endif
2063ev_default_loop (unsigned int flags) 2625ev_default_loop (unsigned int flags) EV_THROW
2064{ 2626{
2065 if (!ev_default_loop_ptr) 2627 if (!ev_default_loop_ptr)
2066 { 2628 {
2067#if EV_MULTIPLICITY 2629#if EV_MULTIPLICITY
2068 EV_P = ev_default_loop_ptr = &default_loop_struct; 2630 EV_P = ev_default_loop_ptr = &default_loop_struct;
… …
2087 2649
2088 return ev_default_loop_ptr; 2650 return ev_default_loop_ptr;
2089} 2651}
2090 2652
2091void 2653void
2092ev_loop_fork (EV_P) 2654ev_loop_fork (EV_P) EV_THROW
2093{ 2655{
2094 postfork = 1; /* must be in line with ev_default_fork */ 2656 postfork = 1; /* must be in line with ev_default_fork */
2095} 2657}
2096 2658
2097/*****************************************************************************/ 2659/*****************************************************************************/
… …
2101{ 2663{
2102 EV_CB_INVOKE ((W)w, revents); 2664 EV_CB_INVOKE ((W)w, revents);
2103} 2665}
2104 2666
2105unsigned int 2667unsigned int
2106ev_pending_count (EV_P) 2668ev_pending_count (EV_P) EV_THROW
2107{ 2669{
2108 int pri; 2670 int pri;
2109 unsigned int count = 0; 2671 unsigned int count = 0;
2110 2672
2111 for (pri = NUMPRI; pri--; ) 2673 for (pri = NUMPRI; pri--; )
… …
2193 } 2755 }
2194} 2756}
2195 2757
2196#if EV_PERIODIC_ENABLE 2758#if EV_PERIODIC_ENABLE
2197 2759
2198inline_speed 2760static void noinline
2199periodic_recalc (EV_P_ ev_periodic *w) 2761periodic_recalc (EV_P_ ev_periodic *w)
2200{ 2762{
2201 /* TODO: use slow but potentially more correct incremental algo, */ 2763 ev_tstamp interval = w->interval > MIN_INTERVAL ? w->interval : MIN_INTERVAL;
2202 /* also do not rely on ceil */ 2764 ev_tstamp at = w->offset + interval * ev_floor ((ev_rt_now - w->offset) / interval);
2203 ev_at (w) = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval; 2765
2766 /* the above almost always errs on the low side */
2767 while (at <= ev_rt_now)
2768 {
2769 ev_tstamp nat = at + w->interval;
2770
2771 /* when resolution fails us, we use ev_rt_now */
2772 if (expect_false (nat == at))
2773 {
2774 at = ev_rt_now;
2775 break;
2776 }
2777
2778 at = nat;
2779 }
2780
2781 ev_at (w) = at;
2204} 2782}
2205 2783
2206/* make periodics pending */ 2784/* make periodics pending */
2207inline_size void 2785inline_size void
2208periodics_reify (EV_P) 2786periodics_reify (EV_P)
… …
2230 downheap (periodics, periodiccnt, HEAP0); 2808 downheap (periodics, periodiccnt, HEAP0);
2231 } 2809 }
2232 else if (w->interval) 2810 else if (w->interval)
2233 { 2811 {
2234 periodic_recalc (EV_A_ w); 2812 periodic_recalc (EV_A_ w);
2235
2236 /* if next trigger time is not sufficiently in the future, put it there */
2237 /* this might happen because of floating point inexactness */
2238 if (ev_at (w) - ev_rt_now < TIME_EPSILON)
2239 {
2240 ev_at (w) += w->interval;
2241
2242 /* if interval is unreasonably low we might still have a time in the past */
2243 /* so correct this. this will make the periodic very inexact, but the user */
2244 /* has effectively asked to get triggered more often than possible */
2245 if (ev_at (w) < ev_rt_now)
2246 ev_at (w) = ev_rt_now;
2247 }
2248
2249 ANHE_at_cache (periodics [HEAP0]); 2813 ANHE_at_cache (periodics [HEAP0]);
2250 downheap (periodics, periodiccnt, HEAP0); 2814 downheap (periodics, periodiccnt, HEAP0);
2251 } 2815 }
2252 else 2816 else
2253 ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */ 2817 ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */
… …
2261 } 2825 }
2262} 2826}
2263 2827
2264/* simply recalculate all periodics */ 2828/* simply recalculate all periodics */
2265/* TODO: maybe ensure that at least one event happens when jumping forward? */ 2829/* TODO: maybe ensure that at least one event happens when jumping forward? */
2266static void noinline 2830static void noinline ecb_cold
2267periodics_reschedule (EV_P) 2831periodics_reschedule (EV_P)
2268{ 2832{
2269 int i; 2833 int i;
2270 2834
2271 /* adjust periodics after time jump */ 2835 /* adjust periodics after time jump */
… …
2284 reheap (periodics, periodiccnt); 2848 reheap (periodics, periodiccnt);
2285} 2849}
2286#endif 2850#endif
2287 2851
2288/* adjust all timers by a given offset */ 2852/* adjust all timers by a given offset */
2289static void noinline 2853static void noinline ecb_cold
2290timers_reschedule (EV_P_ ev_tstamp adjust) 2854timers_reschedule (EV_P_ ev_tstamp adjust)
2291{ 2855{
2292 int i; 2856 int i;
2293 2857
2294 for (i = 0; i < timercnt; ++i) 2858 for (i = 0; i < timercnt; ++i)
… …
2331 * doesn't hurt either as we only do this on time-jumps or 2895 * doesn't hurt either as we only do this on time-jumps or
2332 * in the unlikely event of having been preempted here. 2896 * in the unlikely event of having been preempted here.
2333 */ 2897 */
2334 for (i = 4; --i; ) 2898 for (i = 4; --i; )
2335 { 2899 {
2900 ev_tstamp diff;
2336 rtmn_diff = ev_rt_now - mn_now; 2901 rtmn_diff = ev_rt_now - mn_now;
2337 2902
2903 diff = odiff - rtmn_diff;
2904
2338 if (expect_true (fabs (odiff - rtmn_diff) < MIN_TIMEJUMP)) 2905 if (expect_true ((diff < 0. ? -diff : diff) < MIN_TIMEJUMP))
2339 return; /* all is well */ 2906 return; /* all is well */
2340 2907
2341 ev_rt_now = ev_time (); 2908 ev_rt_now = ev_time ();
2342 mn_now = get_clock (); 2909 mn_now = get_clock ();
2343 now_floor = mn_now; 2910 now_floor = mn_now;
… …
2365 2932
2366 mn_now = ev_rt_now; 2933 mn_now = ev_rt_now;
2367 } 2934 }
2368} 2935}
2369 2936
2370void 2937int
2371ev_run (EV_P_ int flags) 2938ev_run (EV_P_ int flags)
2372{ 2939{
2373#if EV_FEATURE_API 2940#if EV_FEATURE_API
2374 ++loop_depth; 2941 ++loop_depth;
2375#endif 2942#endif
… …
2433 ev_tstamp prev_mn_now = mn_now; 3000 ev_tstamp prev_mn_now = mn_now;
2434 3001
2435 /* update time to cancel out callback processing overhead */ 3002 /* update time to cancel out callback processing overhead */
2436 time_update (EV_A_ 1e100); 3003 time_update (EV_A_ 1e100);
2437 3004
3005 /* from now on, we want a pipe-wake-up */
3006 pipe_write_wanted = 1;
3007
3008 ECB_MEMORY_FENCE; /* make sure pipe_write_wanted is visible before we check for potential skips */
3009
2438 if (expect_true (!(flags & EVRUN_NOWAIT || idleall || !activecnt))) 3010 if (expect_true (!(flags & EVRUN_NOWAIT || idleall || !activecnt || pipe_write_skipped)))
2439 { 3011 {
2440 waittime = MAX_BLOCKTIME; 3012 waittime = MAX_BLOCKTIME;
2441 3013
2442 if (timercnt) 3014 if (timercnt)
2443 { 3015 {
2444 ev_tstamp to = ANHE_at (timers [HEAP0]) - mn_now + backend_fudge; 3016 ev_tstamp to = ANHE_at (timers [HEAP0]) - mn_now;
2445 if (waittime > to) waittime = to; 3017 if (waittime > to) waittime = to;
2446 } 3018 }
2447 3019
2448#if EV_PERIODIC_ENABLE 3020#if EV_PERIODIC_ENABLE
2449 if (periodiccnt) 3021 if (periodiccnt)
2450 { 3022 {
2451 ev_tstamp to = ANHE_at (periodics [HEAP0]) - ev_rt_now + backend_fudge; 3023 ev_tstamp to = ANHE_at (periodics [HEAP0]) - ev_rt_now;
2452 if (waittime > to) waittime = to; 3024 if (waittime > to) waittime = to;
2453 } 3025 }
2454#endif 3026#endif
2455 3027
2456 /* don't let timeouts decrease the waittime below timeout_blocktime */ 3028 /* don't let timeouts decrease the waittime below timeout_blocktime */
2457 if (expect_false (waittime < timeout_blocktime)) 3029 if (expect_false (waittime < timeout_blocktime))
2458 waittime = timeout_blocktime; 3030 waittime = timeout_blocktime;
3031
3032 /* at this point, we NEED to wait, so we have to ensure */
3033 /* to pass a minimum nonzero value to the backend */
3034 if (expect_false (waittime < backend_mintime))
3035 waittime = backend_mintime;
2459 3036
2460 /* extra check because io_blocktime is commonly 0 */ 3037 /* extra check because io_blocktime is commonly 0 */
2461 if (expect_false (io_blocktime)) 3038 if (expect_false (io_blocktime))
2462 { 3039 {
2463 sleeptime = io_blocktime - (mn_now - prev_mn_now); 3040 sleeptime = io_blocktime - (mn_now - prev_mn_now);
2464 3041
2465 if (sleeptime > waittime - backend_fudge) 3042 if (sleeptime > waittime - backend_mintime)
2466 sleeptime = waittime - backend_fudge; 3043 sleeptime = waittime - backend_mintime;
2467 3044
2468 if (expect_true (sleeptime > 0.)) 3045 if (expect_true (sleeptime > 0.))
2469 { 3046 {
2470 ev_sleep (sleeptime); 3047 ev_sleep (sleeptime);
2471 waittime -= sleeptime; 3048 waittime -= sleeptime;
… …
2478#endif 3055#endif
2479 assert ((loop_done = EVBREAK_RECURSE, 1)); /* assert for side effect */ 3056 assert ((loop_done = EVBREAK_RECURSE, 1)); /* assert for side effect */
2480 backend_poll (EV_A_ waittime); 3057 backend_poll (EV_A_ waittime);
2481 assert ((loop_done = EVBREAK_CANCEL, 1)); /* assert for side effect */ 3058 assert ((loop_done = EVBREAK_CANCEL, 1)); /* assert for side effect */
2482 3059
3060 pipe_write_wanted = 0; /* just an optimisation, no fence needed */
3061
3062 if (pipe_write_skipped)
3063 {
3064 assert (("libev: pipe_w not active, but pipe not written", ev_is_active (&pipe_w)));
3065 ev_feed_event (EV_A_ &pipe_w, EV_CUSTOM);
3066 }
3067
3068
2483 /* update ev_rt_now, do magic */ 3069 /* update ev_rt_now, do magic */
2484 time_update (EV_A_ waittime + sleeptime); 3070 time_update (EV_A_ waittime + sleeptime);
2485 } 3071 }
2486 3072
2487 /* queue pending timers and reschedule them */ 3073 /* queue pending timers and reschedule them */
… …
2513 loop_done = EVBREAK_CANCEL; 3099 loop_done = EVBREAK_CANCEL;
2514 3100
2515#if EV_FEATURE_API 3101#if EV_FEATURE_API
2516 --loop_depth; 3102 --loop_depth;
2517#endif 3103#endif
3104
3105 return activecnt;
2518} 3106}
2519 3107
2520void 3108void
2521ev_break (EV_P_ int how) 3109ev_break (EV_P_ int how) EV_THROW
2522{ 3110{
2523 loop_done = how; 3111 loop_done = how;
2524} 3112}
2525 3113
2526void 3114void
2527ev_ref (EV_P) 3115ev_ref (EV_P) EV_THROW
2528{ 3116{
2529 ++activecnt; 3117 ++activecnt;
2530} 3118}
2531 3119
2532void 3120void
2533ev_unref (EV_P) 3121ev_unref (EV_P) EV_THROW
2534{ 3122{
2535 --activecnt; 3123 --activecnt;
2536} 3124}
2537 3125
2538void 3126void
2539ev_now_update (EV_P) 3127ev_now_update (EV_P) EV_THROW
2540{ 3128{
2541 time_update (EV_A_ 1e100); 3129 time_update (EV_A_ 1e100);
2542} 3130}
2543 3131
2544void 3132void
2545ev_suspend (EV_P) 3133ev_suspend (EV_P) EV_THROW
2546{ 3134{
2547 ev_now_update (EV_A); 3135 ev_now_update (EV_A);
2548} 3136}
2549 3137
2550void 3138void
2551ev_resume (EV_P) 3139ev_resume (EV_P) EV_THROW
2552{ 3140{
2553 ev_tstamp mn_prev = mn_now; 3141 ev_tstamp mn_prev = mn_now;
2554 3142
2555 ev_now_update (EV_A); 3143 ev_now_update (EV_A);
2556 timers_reschedule (EV_A_ mn_now - mn_prev); 3144 timers_reschedule (EV_A_ mn_now - mn_prev);
… …
2595 w->pending = 0; 3183 w->pending = 0;
2596 } 3184 }
2597} 3185}
2598 3186
2599int 3187int
2600ev_clear_pending (EV_P_ void *w) 3188ev_clear_pending (EV_P_ void *w) EV_THROW
2601{ 3189{
2602 W w_ = (W)w; 3190 W w_ = (W)w;
2603 int pending = w_->pending; 3191 int pending = w_->pending;
2604 3192
2605 if (expect_true (pending)) 3193 if (expect_true (pending))
… …
2638} 3226}
2639 3227
2640/*****************************************************************************/ 3228/*****************************************************************************/
2641 3229
2642void noinline 3230void noinline
2643ev_io_start (EV_P_ ev_io *w) 3231ev_io_start (EV_P_ ev_io *w) EV_THROW
2644{ 3232{
2645 int fd = w->fd; 3233 int fd = w->fd;
2646 3234
2647 if (expect_false (ev_is_active (w))) 3235 if (expect_false (ev_is_active (w)))
2648 return; 3236 return;
… …
2661 3249
2662 EV_FREQUENT_CHECK; 3250 EV_FREQUENT_CHECK;
2663} 3251}
2664 3252
2665void noinline 3253void noinline
2666ev_io_stop (EV_P_ ev_io *w) 3254ev_io_stop (EV_P_ ev_io *w) EV_THROW
2667{ 3255{
2668 clear_pending (EV_A_ (W)w); 3256 clear_pending (EV_A_ (W)w);
2669 if (expect_false (!ev_is_active (w))) 3257 if (expect_false (!ev_is_active (w)))
2670 return; 3258 return;
2671 3259
… …
2680 3268
2681 EV_FREQUENT_CHECK; 3269 EV_FREQUENT_CHECK;
2682} 3270}
2683 3271
2684void noinline 3272void noinline
2685ev_timer_start (EV_P_ ev_timer *w) 3273ev_timer_start (EV_P_ ev_timer *w) EV_THROW
2686{ 3274{
2687 if (expect_false (ev_is_active (w))) 3275 if (expect_false (ev_is_active (w)))
2688 return; 3276 return;
2689 3277
2690 ev_at (w) += mn_now; 3278 ev_at (w) += mn_now;
… …
2704 3292
2705 /*assert (("libev: internal timer heap corruption", timers [ev_active (w)] == (WT)w));*/ 3293 /*assert (("libev: internal timer heap corruption", timers [ev_active (w)] == (WT)w));*/
2706} 3294}
2707 3295
2708void noinline 3296void noinline
2709ev_timer_stop (EV_P_ ev_timer *w) 3297ev_timer_stop (EV_P_ ev_timer *w) EV_THROW
2710{ 3298{
2711 clear_pending (EV_A_ (W)w); 3299 clear_pending (EV_A_ (W)w);
2712 if (expect_false (!ev_is_active (w))) 3300 if (expect_false (!ev_is_active (w)))
2713 return; 3301 return;
2714 3302
… …
2734 3322
2735 EV_FREQUENT_CHECK; 3323 EV_FREQUENT_CHECK;
2736} 3324}
2737 3325
2738void noinline 3326void noinline
2739ev_timer_again (EV_P_ ev_timer *w) 3327ev_timer_again (EV_P_ ev_timer *w) EV_THROW
2740{ 3328{
2741 EV_FREQUENT_CHECK; 3329 EV_FREQUENT_CHECK;
3330
3331 clear_pending (EV_A_ (W)w);
2742 3332
2743 if (ev_is_active (w)) 3333 if (ev_is_active (w))
2744 { 3334 {
2745 if (w->repeat) 3335 if (w->repeat)
2746 { 3336 {
… …
2759 3349
2760 EV_FREQUENT_CHECK; 3350 EV_FREQUENT_CHECK;
2761} 3351}
2762 3352
2763ev_tstamp 3353ev_tstamp
2764ev_timer_remaining (EV_P_ ev_timer *w) 3354ev_timer_remaining (EV_P_ ev_timer *w) EV_THROW
2765{ 3355{
2766 return ev_at (w) - (ev_is_active (w) ? mn_now : 0.); 3356 return ev_at (w) - (ev_is_active (w) ? mn_now : 0.);
2767} 3357}
2768 3358
2769#if EV_PERIODIC_ENABLE 3359#if EV_PERIODIC_ENABLE
2770void noinline 3360void noinline
2771ev_periodic_start (EV_P_ ev_periodic *w) 3361ev_periodic_start (EV_P_ ev_periodic *w) EV_THROW
2772{ 3362{
2773 if (expect_false (ev_is_active (w))) 3363 if (expect_false (ev_is_active (w)))
2774 return; 3364 return;
2775 3365
2776 if (w->reschedule_cb) 3366 if (w->reschedule_cb)
… …
2796 3386
2797 /*assert (("libev: internal periodic heap corruption", ANHE_w (periodics [ev_active (w)]) == (WT)w));*/ 3387 /*assert (("libev: internal periodic heap corruption", ANHE_w (periodics [ev_active (w)]) == (WT)w));*/
2798} 3388}
2799 3389
2800void noinline 3390void noinline
2801ev_periodic_stop (EV_P_ ev_periodic *w) 3391ev_periodic_stop (EV_P_ ev_periodic *w) EV_THROW
2802{ 3392{
2803 clear_pending (EV_A_ (W)w); 3393 clear_pending (EV_A_ (W)w);
2804 if (expect_false (!ev_is_active (w))) 3394 if (expect_false (!ev_is_active (w)))
2805 return; 3395 return;
2806 3396
… …
2824 3414
2825 EV_FREQUENT_CHECK; 3415 EV_FREQUENT_CHECK;
2826} 3416}
2827 3417
2828void noinline 3418void noinline
2829ev_periodic_again (EV_P_ ev_periodic *w) 3419ev_periodic_again (EV_P_ ev_periodic *w) EV_THROW
2830{ 3420{
2831 /* TODO: use adjustheap and recalculation */ 3421 /* TODO: use adjustheap and recalculation */
2832 ev_periodic_stop (EV_A_ w); 3422 ev_periodic_stop (EV_A_ w);
2833 ev_periodic_start (EV_A_ w); 3423 ev_periodic_start (EV_A_ w);
2834} 3424}
… …
2839#endif 3429#endif
2840 3430
2841#if EV_SIGNAL_ENABLE 3431#if EV_SIGNAL_ENABLE
2842 3432
2843void noinline 3433void noinline
2844ev_signal_start (EV_P_ ev_signal *w) 3434ev_signal_start (EV_P_ ev_signal *w) EV_THROW
2845{ 3435{
2846 if (expect_false (ev_is_active (w))) 3436 if (expect_false (ev_is_active (w)))
2847 return; 3437 return;
2848 3438
2849 assert (("libev: ev_signal_start called with illegal signal number", w->signum > 0 && w->signum < EV_NSIG)); 3439 assert (("libev: ev_signal_start called with illegal signal number", w->signum > 0 && w->signum < EV_NSIG));
… …
2920 3510
2921 EV_FREQUENT_CHECK; 3511 EV_FREQUENT_CHECK;
2922} 3512}
2923 3513
2924void noinline 3514void noinline
2925ev_signal_stop (EV_P_ ev_signal *w) 3515ev_signal_stop (EV_P_ ev_signal *w) EV_THROW
2926{ 3516{
2927 clear_pending (EV_A_ (W)w); 3517 clear_pending (EV_A_ (W)w);
2928 if (expect_false (!ev_is_active (w))) 3518 if (expect_false (!ev_is_active (w)))
2929 return; 3519 return;
2930 3520
… …
2961#endif 3551#endif
2962 3552
2963#if EV_CHILD_ENABLE 3553#if EV_CHILD_ENABLE
2964 3554
2965void 3555void
2966ev_child_start (EV_P_ ev_child *w) 3556ev_child_start (EV_P_ ev_child *w) EV_THROW
2967{ 3557{
2968#if EV_MULTIPLICITY 3558#if EV_MULTIPLICITY
2969 assert (("libev: child watchers are only supported in the default loop", loop == ev_default_loop_ptr)); 3559 assert (("libev: child watchers are only supported in the default loop", loop == ev_default_loop_ptr));
2970#endif 3560#endif
2971 if (expect_false (ev_is_active (w))) 3561 if (expect_false (ev_is_active (w)))
… …
2978 3568
2979 EV_FREQUENT_CHECK; 3569 EV_FREQUENT_CHECK;
2980} 3570}
2981 3571
2982void 3572void
2983ev_child_stop (EV_P_ ev_child *w) 3573ev_child_stop (EV_P_ ev_child *w) EV_THROW
2984{ 3574{
2985 clear_pending (EV_A_ (W)w); 3575 clear_pending (EV_A_ (W)w);
2986 if (expect_false (!ev_is_active (w))) 3576 if (expect_false (!ev_is_active (w)))
2987 return; 3577 return;
2988 3578
… …
3063 if (!pend || pend == path) 3653 if (!pend || pend == path)
3064 break; 3654 break;
3065 3655
3066 *pend = 0; 3656 *pend = 0;
3067 w->wd = inotify_add_watch (fs_fd, path, mask); 3657 w->wd = inotify_add_watch (fs_fd, path, mask);
3068 } 3658 }
3069 while (w->wd < 0 && (errno == ENOENT || errno == EACCES)); 3659 while (w->wd < 0 && (errno == ENOENT || errno == EACCES));
3070 } 3660 }
3071 } 3661 }
3072 3662
3073 if (w->wd >= 0) 3663 if (w->wd >= 0)
… …
3140 infy_wd (EV_A_ ev->wd, ev->wd, ev); 3730 infy_wd (EV_A_ ev->wd, ev->wd, ev);
3141 ofs += sizeof (struct inotify_event) + ev->len; 3731 ofs += sizeof (struct inotify_event) + ev->len;
3142 } 3732 }
3143} 3733}
3144 3734
3145inline_size void 3735inline_size void ecb_cold
3146ev_check_2625 (EV_P) 3736ev_check_2625 (EV_P)
3147{ 3737{
3148 /* kernels < 2.6.25 are borked 3738 /* kernels < 2.6.25 are borked
3149 * http://www.ussg.indiana.edu/hypermail/linux/kernel/0711.3/1208.html 3739 * http://www.ussg.indiana.edu/hypermail/linux/kernel/0711.3/1208.html
3150 */ 3740 */
… …
3155} 3745}
3156 3746
3157inline_size int 3747inline_size int
3158infy_newfd (void) 3748infy_newfd (void)
3159{ 3749{
3160#if defined (IN_CLOEXEC) && defined (IN_NONBLOCK) 3750#if defined IN_CLOEXEC && defined IN_NONBLOCK
3161 int fd = inotify_init1 (IN_CLOEXEC | IN_NONBLOCK); 3751 int fd = inotify_init1 (IN_CLOEXEC | IN_NONBLOCK);
3162 if (fd >= 0) 3752 if (fd >= 0)
3163 return fd; 3753 return fd;
3164#endif 3754#endif
3165 return inotify_init (); 3755 return inotify_init ();
… …
3240#else 3830#else
3241# define EV_LSTAT(p,b) lstat (p, b) 3831# define EV_LSTAT(p,b) lstat (p, b)
3242#endif 3832#endif
3243 3833
3244void 3834void
3245ev_stat_stat (EV_P_ ev_stat *w) 3835ev_stat_stat (EV_P_ ev_stat *w) EV_THROW
3246{ 3836{
3247 if (lstat (w->path, &w->attr) < 0) 3837 if (lstat (w->path, &w->attr) < 0)
3248 w->attr.st_nlink = 0; 3838 w->attr.st_nlink = 0;
3249 else if (!w->attr.st_nlink) 3839 else if (!w->attr.st_nlink)
3250 w->attr.st_nlink = 1; 3840 w->attr.st_nlink = 1;
… …
3289 ev_feed_event (EV_A_ w, EV_STAT); 3879 ev_feed_event (EV_A_ w, EV_STAT);
3290 } 3880 }
3291} 3881}
3292 3882
3293void 3883void
3294ev_stat_start (EV_P_ ev_stat *w) 3884ev_stat_start (EV_P_ ev_stat *w) EV_THROW
3295{ 3885{
3296 if (expect_false (ev_is_active (w))) 3886 if (expect_false (ev_is_active (w)))
3297 return; 3887 return;
3298 3888
3299 ev_stat_stat (EV_A_ w); 3889 ev_stat_stat (EV_A_ w);
… …
3320 3910
3321 EV_FREQUENT_CHECK; 3911 EV_FREQUENT_CHECK;
3322} 3912}
3323 3913
3324void 3914void
3325ev_stat_stop (EV_P_ ev_stat *w) 3915ev_stat_stop (EV_P_ ev_stat *w) EV_THROW
3326{ 3916{
3327 clear_pending (EV_A_ (W)w); 3917 clear_pending (EV_A_ (W)w);
3328 if (expect_false (!ev_is_active (w))) 3918 if (expect_false (!ev_is_active (w)))
3329 return; 3919 return;
3330 3920
… …
3346} 3936}
3347#endif 3937#endif
3348 3938
3349#if EV_IDLE_ENABLE 3939#if EV_IDLE_ENABLE
3350void 3940void
3351ev_idle_start (EV_P_ ev_idle *w) 3941ev_idle_start (EV_P_ ev_idle *w) EV_THROW
3352{ 3942{
3353 if (expect_false (ev_is_active (w))) 3943 if (expect_false (ev_is_active (w)))
3354 return; 3944 return;
3355 3945
3356 pri_adjust (EV_A_ (W)w); 3946 pri_adjust (EV_A_ (W)w);
… …
3369 3959
3370 EV_FREQUENT_CHECK; 3960 EV_FREQUENT_CHECK;
3371} 3961}
3372 3962
3373void 3963void
3374ev_idle_stop (EV_P_ ev_idle *w) 3964ev_idle_stop (EV_P_ ev_idle *w) EV_THROW
3375{ 3965{
3376 clear_pending (EV_A_ (W)w); 3966 clear_pending (EV_A_ (W)w);
3377 if (expect_false (!ev_is_active (w))) 3967 if (expect_false (!ev_is_active (w)))
3378 return; 3968 return;
3379 3969
… …
3393} 3983}
3394#endif 3984#endif
3395 3985
3396#if EV_PREPARE_ENABLE 3986#if EV_PREPARE_ENABLE
3397void 3987void
3398ev_prepare_start (EV_P_ ev_prepare *w) 3988ev_prepare_start (EV_P_ ev_prepare *w) EV_THROW
3399{ 3989{
3400 if (expect_false (ev_is_active (w))) 3990 if (expect_false (ev_is_active (w)))
3401 return; 3991 return;
3402 3992
3403 EV_FREQUENT_CHECK; 3993 EV_FREQUENT_CHECK;
… …
3408 3998
3409 EV_FREQUENT_CHECK; 3999 EV_FREQUENT_CHECK;
3410} 4000}
3411 4001
3412void 4002void
3413ev_prepare_stop (EV_P_ ev_prepare *w) 4003ev_prepare_stop (EV_P_ ev_prepare *w) EV_THROW
3414{ 4004{
3415 clear_pending (EV_A_ (W)w); 4005 clear_pending (EV_A_ (W)w);
3416 if (expect_false (!ev_is_active (w))) 4006 if (expect_false (!ev_is_active (w)))
3417 return; 4007 return;
3418 4008
… …
3431} 4021}
3432#endif 4022#endif
3433 4023
3434#if EV_CHECK_ENABLE 4024#if EV_CHECK_ENABLE
3435void 4025void
3436ev_check_start (EV_P_ ev_check *w) 4026ev_check_start (EV_P_ ev_check *w) EV_THROW
3437{ 4027{
3438 if (expect_false (ev_is_active (w))) 4028 if (expect_false (ev_is_active (w)))
3439 return; 4029 return;
3440 4030
3441 EV_FREQUENT_CHECK; 4031 EV_FREQUENT_CHECK;
… …
3446 4036
3447 EV_FREQUENT_CHECK; 4037 EV_FREQUENT_CHECK;
3448} 4038}
3449 4039
3450void 4040void
3451ev_check_stop (EV_P_ ev_check *w) 4041ev_check_stop (EV_P_ ev_check *w) EV_THROW
3452{ 4042{
3453 clear_pending (EV_A_ (W)w); 4043 clear_pending (EV_A_ (W)w);
3454 if (expect_false (!ev_is_active (w))) 4044 if (expect_false (!ev_is_active (w)))
3455 return; 4045 return;
3456 4046
… …
3469} 4059}
3470#endif 4060#endif
3471 4061
3472#if EV_EMBED_ENABLE 4062#if EV_EMBED_ENABLE
3473void noinline 4063void noinline
3474ev_embed_sweep (EV_P_ ev_embed *w) 4064ev_embed_sweep (EV_P_ ev_embed *w) EV_THROW
3475{ 4065{
3476 ev_run (w->other, EVRUN_NOWAIT); 4066 ev_run (w->other, EVRUN_NOWAIT);
3477} 4067}
3478 4068
3479static void 4069static void
… …
3527 ev_idle_stop (EV_A_ idle); 4117 ev_idle_stop (EV_A_ idle);
3528} 4118}
3529#endif 4119#endif
3530 4120
3531void 4121void
3532ev_embed_start (EV_P_ ev_embed *w) 4122ev_embed_start (EV_P_ ev_embed *w) EV_THROW
3533{ 4123{
3534 if (expect_false (ev_is_active (w))) 4124 if (expect_false (ev_is_active (w)))
3535 return; 4125 return;
3536 4126
3537 { 4127 {
… …
3558 4148
3559 EV_FREQUENT_CHECK; 4149 EV_FREQUENT_CHECK;
3560} 4150}
3561 4151
3562void 4152void
3563ev_embed_stop (EV_P_ ev_embed *w) 4153ev_embed_stop (EV_P_ ev_embed *w) EV_THROW
3564{ 4154{
3565 clear_pending (EV_A_ (W)w); 4155 clear_pending (EV_A_ (W)w);
3566 if (expect_false (!ev_is_active (w))) 4156 if (expect_false (!ev_is_active (w)))
3567 return; 4157 return;
3568 4158
… …
3578} 4168}
3579#endif 4169#endif
3580 4170
3581#if EV_FORK_ENABLE 4171#if EV_FORK_ENABLE
3582void 4172void
3583ev_fork_start (EV_P_ ev_fork *w) 4173ev_fork_start (EV_P_ ev_fork *w) EV_THROW
3584{ 4174{
3585 if (expect_false (ev_is_active (w))) 4175 if (expect_false (ev_is_active (w)))
3586 return; 4176 return;
3587 4177
3588 EV_FREQUENT_CHECK; 4178 EV_FREQUENT_CHECK;
… …
3593 4183
3594 EV_FREQUENT_CHECK; 4184 EV_FREQUENT_CHECK;
3595} 4185}
3596 4186
3597void 4187void
3598ev_fork_stop (EV_P_ ev_fork *w) 4188ev_fork_stop (EV_P_ ev_fork *w) EV_THROW
3599{ 4189{
3600 clear_pending (EV_A_ (W)w); 4190 clear_pending (EV_A_ (W)w);
3601 if (expect_false (!ev_is_active (w))) 4191 if (expect_false (!ev_is_active (w)))
3602 return; 4192 return;
3603 4193
… …
3616} 4206}
3617#endif 4207#endif
3618 4208
3619#if EV_CLEANUP_ENABLE 4209#if EV_CLEANUP_ENABLE
3620void 4210void
3621ev_cleanup_start (EV_P_ ev_cleanup *w) 4211ev_cleanup_start (EV_P_ ev_cleanup *w) EV_THROW
3622{ 4212{
3623 if (expect_false (ev_is_active (w))) 4213 if (expect_false (ev_is_active (w)))
3624 return; 4214 return;
3625 4215
3626 EV_FREQUENT_CHECK; 4216 EV_FREQUENT_CHECK;
… …
3633 ev_unref (EV_A); 4223 ev_unref (EV_A);
3634 EV_FREQUENT_CHECK; 4224 EV_FREQUENT_CHECK;
3635} 4225}
3636 4226
3637void 4227void
3638ev_cleanup_stop (EV_P_ ev_cleanup *w) 4228ev_cleanup_stop (EV_P_ ev_cleanup *w) EV_THROW
3639{ 4229{
3640 clear_pending (EV_A_ (W)w); 4230 clear_pending (EV_A_ (W)w);
3641 if (expect_false (!ev_is_active (w))) 4231 if (expect_false (!ev_is_active (w)))
3642 return; 4232 return;
3643 4233
… …
3657} 4247}
3658#endif 4248#endif
3659 4249
3660#if EV_ASYNC_ENABLE 4250#if EV_ASYNC_ENABLE
3661void 4251void
3662ev_async_start (EV_P_ ev_async *w) 4252ev_async_start (EV_P_ ev_async *w) EV_THROW
3663{ 4253{
3664 if (expect_false (ev_is_active (w))) 4254 if (expect_false (ev_is_active (w)))
3665 return; 4255 return;
3666 4256
3667 w->sent = 0; 4257 w->sent = 0;
… …
3676 4266
3677 EV_FREQUENT_CHECK; 4267 EV_FREQUENT_CHECK;
3678} 4268}
3679 4269
3680void 4270void
3681ev_async_stop (EV_P_ ev_async *w) 4271ev_async_stop (EV_P_ ev_async *w) EV_THROW
3682{ 4272{
3683 clear_pending (EV_A_ (W)w); 4273 clear_pending (EV_A_ (W)w);
3684 if (expect_false (!ev_is_active (w))) 4274 if (expect_false (!ev_is_active (w)))
3685 return; 4275 return;
3686 4276
… …
3697 4287
3698 EV_FREQUENT_CHECK; 4288 EV_FREQUENT_CHECK;
3699} 4289}
3700 4290
3701void 4291void
3702ev_async_send (EV_P_ ev_async *w) 4292ev_async_send (EV_P_ ev_async *w) EV_THROW
3703{ 4293{
3704 w->sent = 1; 4294 w->sent = 1;
3705 evpipe_write (EV_A_ &async_pending); 4295 evpipe_write (EV_A_ &async_pending);
3706} 4296}
3707#endif 4297#endif
… …
3744 4334
3745 once_cb (EV_A_ once, revents | ev_clear_pending (EV_A_ &once->io)); 4335 once_cb (EV_A_ once, revents | ev_clear_pending (EV_A_ &once->io));
3746} 4336}
3747 4337
3748void 4338void
3749ev_once (EV_P_ int fd, int events, ev_tstamp timeout, void (*cb)(int revents, void *arg), void *arg) 4339ev_once (EV_P_ int fd, int events, ev_tstamp timeout, void (*cb)(int revents, void *arg), void *arg) EV_THROW
3750{ 4340{
3751 struct ev_once *once = (struct ev_once *)ev_malloc (sizeof (struct ev_once)); 4341 struct ev_once *once = (struct ev_once *)ev_malloc (sizeof (struct ev_once));
3752 4342
3753 if (expect_false (!once)) 4343 if (expect_false (!once))
3754 { 4344 {
… …
3775} 4365}
3776 4366
3777/*****************************************************************************/ 4367/*****************************************************************************/
3778 4368
3779#if EV_WALK_ENABLE 4369#if EV_WALK_ENABLE
3780void 4370void ecb_cold
3781ev_walk (EV_P_ int types, void (*cb)(EV_P_ int type, void *w)) 4371ev_walk (EV_P_ int types, void (*cb)(EV_P_ int type, void *w)) EV_THROW
3782{ 4372{
3783 int i, j; 4373 int i, j;
3784 ev_watcher_list *wl, *wn; 4374 ev_watcher_list *wl, *wn;
3785 4375
3786 if (types & (EV_IO | EV_EMBED)) 4376 if (types & (EV_IO | EV_EMBED))
… …
3829 cb (EV_A_ EV_PERIODIC, ANHE_w (periodics [i])); 4419 cb (EV_A_ EV_PERIODIC, ANHE_w (periodics [i]));
3830#endif 4420#endif
3831 4421
3832#if EV_IDLE_ENABLE 4422#if EV_IDLE_ENABLE
3833 if (types & EV_IDLE) 4423 if (types & EV_IDLE)
3834 for (j = NUMPRI; i--; ) 4424 for (j = NUMPRI; j--; )
3835 for (i = idlecnt [j]; i--; ) 4425 for (i = idlecnt [j]; i--; )
3836 cb (EV_A_ EV_IDLE, idles [j][i]); 4426 cb (EV_A_ EV_IDLE, idles [j][i]);
3837#endif 4427#endif
3838 4428
3839#if EV_FORK_ENABLE 4429#if EV_FORK_ENABLE
… …
3892 4482
3893#if EV_MULTIPLICITY 4483#if EV_MULTIPLICITY
3894 #include "ev_wrap.h" 4484 #include "ev_wrap.h"
3895#endif 4485#endif
3896 4486
3897EV_CPP(})
3898

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