ViewVC Help
View File | Revision Log | Show Annotations | Download File
/cvs/libev/ev.c
(Generate patch)

Comparing libev/ev.c (file contents):
Revision 1.370 by root, Sun Jan 30 19:05:41 2011 UTC vs.
Revision 1.426 by root, Sun May 6 13:42:10 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))
… …
906 w_->pending = ++pendingcnt [pri]; 1430 w_->pending = ++pendingcnt [pri];
907 array_needsize (ANPENDING, pendings [pri], pendingmax [pri], w_->pending, EMPTY2); 1431 array_needsize (ANPENDING, pendings [pri], pendingmax [pri], w_->pending, EMPTY2);
908 pendings [pri][w_->pending - 1].w = w_; 1432 pendings [pri][w_->pending - 1].w = w_;
909 pendings [pri][w_->pending - 1].events = revents; 1433 pendings [pri][w_->pending - 1].events = revents;
910 } 1434 }
1435
1436 pendingpri = NUMPRI - 1;
911} 1437}
912 1438
913inline_speed void 1439inline_speed void
914feed_reverse (EV_P_ W w) 1440feed_reverse (EV_P_ W w)
915{ 1441{
… …
961 if (expect_true (!anfd->reify)) 1487 if (expect_true (!anfd->reify))
962 fd_event_nocheck (EV_A_ fd, revents); 1488 fd_event_nocheck (EV_A_ fd, revents);
963} 1489}
964 1490
965void 1491void
966ev_feed_fd_event (EV_P_ int fd, int revents) 1492ev_feed_fd_event (EV_P_ int fd, int revents) EV_THROW
967{ 1493{
968 if (fd >= 0 && fd < anfdmax) 1494 if (fd >= 0 && fd < anfdmax)
969 fd_event_nocheck (EV_A_ fd, revents); 1495 fd_event_nocheck (EV_A_ fd, revents);
970} 1496}
971 1497
… …
974inline_size void 1500inline_size void
975fd_reify (EV_P) 1501fd_reify (EV_P)
976{ 1502{
977 int i; 1503 int i;
978 1504
1505#if EV_SELECT_IS_WINSOCKET || EV_USE_IOCP
1506 for (i = 0; i < fdchangecnt; ++i)
1507 {
1508 int fd = fdchanges [i];
1509 ANFD *anfd = anfds + fd;
1510
1511 if (anfd->reify & EV__IOFDSET && anfd->head)
1512 {
1513 SOCKET handle = EV_FD_TO_WIN32_HANDLE (fd);
1514
1515 if (handle != anfd->handle)
1516 {
1517 unsigned long arg;
1518
1519 assert (("libev: only socket fds supported in this configuration", ioctlsocket (handle, FIONREAD, &arg) == 0));
1520
1521 /* handle changed, but fd didn't - we need to do it in two steps */
1522 backend_modify (EV_A_ fd, anfd->events, 0);
1523 anfd->events = 0;
1524 anfd->handle = handle;
1525 }
1526 }
1527 }
1528#endif
1529
979 for (i = 0; i < fdchangecnt; ++i) 1530 for (i = 0; i < fdchangecnt; ++i)
980 { 1531 {
981 int fd = fdchanges [i]; 1532 int fd = fdchanges [i];
982 ANFD *anfd = anfds + fd; 1533 ANFD *anfd = anfds + fd;
983 ev_io *w; 1534 ev_io *w;
… …
985 unsigned char o_events = anfd->events; 1536 unsigned char o_events = anfd->events;
986 unsigned char o_reify = anfd->reify; 1537 unsigned char o_reify = anfd->reify;
987 1538
988 anfd->reify = 0; 1539 anfd->reify = 0;
989 1540
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 */ 1541 /*if (expect_true (o_reify & EV_ANFD_REIFY)) probably a deoptimisation */
1001 { 1542 {
1002 anfd->events = 0; 1543 anfd->events = 0;
1003 1544
1004 for (w = (ev_io *)anfd->head; w; w = (ev_io *)((WL)w)->next) 1545 for (w = (ev_io *)anfd->head; w; w = (ev_io *)((WL)w)->next)
… …
1029 fdchanges [fdchangecnt - 1] = fd; 1570 fdchanges [fdchangecnt - 1] = fd;
1030 } 1571 }
1031} 1572}
1032 1573
1033/* the given fd is invalid/unusable, so make sure it doesn't hurt us anymore */ 1574/* the given fd is invalid/unusable, so make sure it doesn't hurt us anymore */
1034inline_speed void 1575inline_speed void ecb_cold
1035fd_kill (EV_P_ int fd) 1576fd_kill (EV_P_ int fd)
1036{ 1577{
1037 ev_io *w; 1578 ev_io *w;
1038 1579
1039 while ((w = (ev_io *)anfds [fd].head)) 1580 while ((w = (ev_io *)anfds [fd].head))
… …
1042 ev_feed_event (EV_A_ (W)w, EV_ERROR | EV_READ | EV_WRITE); 1583 ev_feed_event (EV_A_ (W)w, EV_ERROR | EV_READ | EV_WRITE);
1043 } 1584 }
1044} 1585}
1045 1586
1046/* check whether the given fd is actually valid, for error recovery */ 1587/* check whether the given fd is actually valid, for error recovery */
1047inline_size int 1588inline_size int ecb_cold
1048fd_valid (int fd) 1589fd_valid (int fd)
1049{ 1590{
1050#ifdef _WIN32 1591#ifdef _WIN32
1051 return EV_FD_TO_WIN32_HANDLE (fd) != -1; 1592 return EV_FD_TO_WIN32_HANDLE (fd) != -1;
1052#else 1593#else
1053 return fcntl (fd, F_GETFD) != -1; 1594 return fcntl (fd, F_GETFD) != -1;
1054#endif 1595#endif
1055} 1596}
1056 1597
1057/* called on EBADF to verify fds */ 1598/* called on EBADF to verify fds */
1058static void noinline 1599static void noinline ecb_cold
1059fd_ebadf (EV_P) 1600fd_ebadf (EV_P)
1060{ 1601{
1061 int fd; 1602 int fd;
1062 1603
1063 for (fd = 0; fd < anfdmax; ++fd) 1604 for (fd = 0; fd < anfdmax; ++fd)
… …
1065 if (!fd_valid (fd) && errno == EBADF) 1606 if (!fd_valid (fd) && errno == EBADF)
1066 fd_kill (EV_A_ fd); 1607 fd_kill (EV_A_ fd);
1067} 1608}
1068 1609
1069/* called on ENOMEM in select/poll to kill some fds and retry */ 1610/* called on ENOMEM in select/poll to kill some fds and retry */
1070static void noinline 1611static void noinline ecb_cold
1071fd_enomem (EV_P) 1612fd_enomem (EV_P)
1072{ 1613{
1073 int fd; 1614 int fd;
1074 1615
1075 for (fd = anfdmax; fd--; ) 1616 for (fd = anfdmax; fd--; )
… …
1270 1811
1271/*****************************************************************************/ 1812/*****************************************************************************/
1272 1813
1273#if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE 1814#if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE
1274 1815
1275static void noinline 1816static void noinline ecb_cold
1276evpipe_init (EV_P) 1817evpipe_init (EV_P)
1277{ 1818{
1278 if (!ev_is_active (&pipe_w)) 1819 if (!ev_is_active (&pipe_w))
1279 { 1820 {
1280# if EV_USE_EVENTFD 1821# if EV_USE_EVENTFD
… …
1302 ev_io_start (EV_A_ &pipe_w); 1843 ev_io_start (EV_A_ &pipe_w);
1303 ev_unref (EV_A); /* watcher should not keep loop alive */ 1844 ev_unref (EV_A); /* watcher should not keep loop alive */
1304 } 1845 }
1305} 1846}
1306 1847
1307inline_size void 1848inline_speed void
1308evpipe_write (EV_P_ EV_ATOMIC_T *flag) 1849evpipe_write (EV_P_ EV_ATOMIC_T *flag)
1309{ 1850{
1310 if (!*flag) 1851 ECB_MEMORY_FENCE; /* push out the write before this function was called, acquire flag */
1852
1853 if (expect_true (*flag))
1854 return;
1855
1856 *flag = 1;
1857
1858 ECB_MEMORY_FENCE_RELEASE; /* make sure flag is visible before the wakeup */
1859
1860 pipe_write_skipped = 1;
1861
1862 ECB_MEMORY_FENCE; /* make sure pipe_write_skipped is visible before we check pipe_write_wanted */
1863
1864 if (pipe_write_wanted)
1311 { 1865 {
1866 int old_errno;
1867
1868 pipe_write_skipped = 0; /* just an optimisation, no fence needed */
1869
1312 int old_errno = errno; /* save errno because write might clobber it */ 1870 old_errno = errno; /* save errno because write will clobber it */
1313 char dummy;
1314
1315 *flag = 1;
1316 1871
1317#if EV_USE_EVENTFD 1872#if EV_USE_EVENTFD
1318 if (evfd >= 0) 1873 if (evfd >= 0)
1319 { 1874 {
1320 uint64_t counter = 1; 1875 uint64_t counter = 1;
1321 write (evfd, &counter, sizeof (uint64_t)); 1876 write (evfd, &counter, sizeof (uint64_t));
1322 } 1877 }
1323 else 1878 else
1324#endif 1879#endif
1880 {
1325 /* win32 people keep sending patches that change this write() to send() */ 1881 /* 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 */ 1882 /* 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 */ 1883 /* 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 */ 1884 /* where your send() is from - it's definitely not the microsoft send, and */
1329 /* tell me. thank you. */ 1885 /* tell me. thank you. */
1886 /* it might be that your problem is that your environment needs EV_USE_WSASOCKET */
1887 /* check the ev documentation on how to use this flag */
1330 write (evpipe [1], &dummy, 1); 1888 write (evpipe [1], &(evpipe [1]), 1);
1889 }
1331 1890
1332 errno = old_errno; 1891 errno = old_errno;
1333 } 1892 }
1334} 1893}
1335 1894
… …
1338static void 1897static void
1339pipecb (EV_P_ ev_io *iow, int revents) 1898pipecb (EV_P_ ev_io *iow, int revents)
1340{ 1899{
1341 int i; 1900 int i;
1342 1901
1902 if (revents & EV_READ)
1903 {
1343#if EV_USE_EVENTFD 1904#if EV_USE_EVENTFD
1344 if (evfd >= 0) 1905 if (evfd >= 0)
1345 { 1906 {
1346 uint64_t counter; 1907 uint64_t counter;
1347 read (evfd, &counter, sizeof (uint64_t)); 1908 read (evfd, &counter, sizeof (uint64_t));
1348 } 1909 }
1349 else 1910 else
1350#endif 1911#endif
1351 { 1912 {
1352 char dummy; 1913 char dummy;
1353 /* see discussion in evpipe_write when you think this read should be recv in win32 */ 1914 /* see discussion in evpipe_write when you think this read should be recv in win32 */
1354 read (evpipe [0], &dummy, 1); 1915 read (evpipe [0], &dummy, 1);
1916 }
1355 } 1917 }
1918
1919 pipe_write_skipped = 0;
1920
1921 ECB_MEMORY_FENCE; /* push out skipped, acquire flags */
1356 1922
1357#if EV_SIGNAL_ENABLE 1923#if EV_SIGNAL_ENABLE
1358 if (sig_pending) 1924 if (sig_pending)
1359 { 1925 {
1360 sig_pending = 0; 1926 sig_pending = 0;
1927
1928 ECB_MEMORY_FENCE_RELEASE;
1361 1929
1362 for (i = EV_NSIG - 1; i--; ) 1930 for (i = EV_NSIG - 1; i--; )
1363 if (expect_false (signals [i].pending)) 1931 if (expect_false (signals [i].pending))
1364 ev_feed_signal_event (EV_A_ i + 1); 1932 ev_feed_signal_event (EV_A_ i + 1);
1365 } 1933 }
… …
1367 1935
1368#if EV_ASYNC_ENABLE 1936#if EV_ASYNC_ENABLE
1369 if (async_pending) 1937 if (async_pending)
1370 { 1938 {
1371 async_pending = 0; 1939 async_pending = 0;
1940
1941 ECB_MEMORY_FENCE_RELEASE;
1372 1942
1373 for (i = asynccnt; i--; ) 1943 for (i = asynccnt; i--; )
1374 if (asyncs [i]->sent) 1944 if (asyncs [i]->sent)
1375 { 1945 {
1376 asyncs [i]->sent = 0; 1946 asyncs [i]->sent = 0;
… …
1381} 1951}
1382 1952
1383/*****************************************************************************/ 1953/*****************************************************************************/
1384 1954
1385void 1955void
1386ev_feed_signal (int signum) 1956ev_feed_signal (int signum) EV_THROW
1387{ 1957{
1388#if EV_MULTIPLICITY 1958#if EV_MULTIPLICITY
1389 EV_P = signals [signum - 1].loop; 1959 EV_P = signals [signum - 1].loop;
1390 1960
1391 if (!EV_A) 1961 if (!EV_A)
1392 return; 1962 return;
1393#endif 1963#endif
1394 1964
1965 if (!ev_active (&pipe_w))
1966 return;
1967
1395 signals [signum - 1].pending = 1; 1968 signals [signum - 1].pending = 1;
1396 evpipe_write (EV_A_ &sig_pending); 1969 evpipe_write (EV_A_ &sig_pending);
1397} 1970}
1398 1971
1399static void 1972static void
… …
1405 1978
1406 ev_feed_signal (signum); 1979 ev_feed_signal (signum);
1407} 1980}
1408 1981
1409void noinline 1982void noinline
1410ev_feed_signal_event (EV_P_ int signum) 1983ev_feed_signal_event (EV_P_ int signum) EV_THROW
1411{ 1984{
1412 WL w; 1985 WL w;
1413 1986
1414 if (expect_false (signum <= 0 || signum > EV_NSIG)) 1987 if (expect_false (signum <= 0 || signum > EV_NSIG))
1415 return; 1988 return;
… …
1530#endif 2103#endif
1531#if EV_USE_SELECT 2104#if EV_USE_SELECT
1532# include "ev_select.c" 2105# include "ev_select.c"
1533#endif 2106#endif
1534 2107
1535int 2108int ecb_cold
1536ev_version_major (void) 2109ev_version_major (void) EV_THROW
1537{ 2110{
1538 return EV_VERSION_MAJOR; 2111 return EV_VERSION_MAJOR;
1539} 2112}
1540 2113
1541int 2114int ecb_cold
1542ev_version_minor (void) 2115ev_version_minor (void) EV_THROW
1543{ 2116{
1544 return EV_VERSION_MINOR; 2117 return EV_VERSION_MINOR;
1545} 2118}
1546 2119
1547/* return true if we are running with elevated privileges and should ignore env variables */ 2120/* return true if we are running with elevated privileges and should ignore env variables */
1548int inline_size 2121int inline_size ecb_cold
1549enable_secure (void) 2122enable_secure (void)
1550{ 2123{
1551#ifdef _WIN32 2124#ifdef _WIN32
1552 return 0; 2125 return 0;
1553#else 2126#else
1554 return getuid () != geteuid () 2127 return getuid () != geteuid ()
1555 || getgid () != getegid (); 2128 || getgid () != getegid ();
1556#endif 2129#endif
1557} 2130}
1558 2131
1559unsigned int 2132unsigned int ecb_cold
1560ev_supported_backends (void) 2133ev_supported_backends (void) EV_THROW
1561{ 2134{
1562 unsigned int flags = 0; 2135 unsigned int flags = 0;
1563 2136
1564 if (EV_USE_PORT ) flags |= EVBACKEND_PORT; 2137 if (EV_USE_PORT ) flags |= EVBACKEND_PORT;
1565 if (EV_USE_KQUEUE) flags |= EVBACKEND_KQUEUE; 2138 if (EV_USE_KQUEUE) flags |= EVBACKEND_KQUEUE;
… …
1568 if (EV_USE_SELECT) flags |= EVBACKEND_SELECT; 2141 if (EV_USE_SELECT) flags |= EVBACKEND_SELECT;
1569 2142
1570 return flags; 2143 return flags;
1571} 2144}
1572 2145
1573unsigned int 2146unsigned int ecb_cold
1574ev_recommended_backends (void) 2147ev_recommended_backends (void) EV_THROW
1575{ 2148{
1576 unsigned int flags = ev_supported_backends (); 2149 unsigned int flags = ev_supported_backends ();
1577 2150
1578#ifndef __NetBSD__ 2151#ifndef __NetBSD__
1579 /* kqueue is borked on everything but netbsd apparently */ 2152 /* kqueue is borked on everything but netbsd apparently */
… …
1590#endif 2163#endif
1591 2164
1592 return flags; 2165 return flags;
1593} 2166}
1594 2167
1595unsigned int 2168unsigned int ecb_cold
1596ev_embeddable_backends (void) 2169ev_embeddable_backends (void) EV_THROW
1597{ 2170{
1598 int flags = EVBACKEND_EPOLL | EVBACKEND_KQUEUE | EVBACKEND_PORT; 2171 int flags = EVBACKEND_EPOLL | EVBACKEND_KQUEUE | EVBACKEND_PORT;
1599 2172
1600 /* epoll embeddability broken on all linux versions up to at least 2.6.23 */ 2173 /* 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 */ 2174 if (ev_linux_version () < 0x020620) /* disable it on linux < 2.6.32 */
… …
1603 2176
1604 return flags; 2177 return flags;
1605} 2178}
1606 2179
1607unsigned int 2180unsigned int
1608ev_backend (EV_P) 2181ev_backend (EV_P) EV_THROW
1609{ 2182{
1610 return backend; 2183 return backend;
1611} 2184}
1612 2185
1613#if EV_FEATURE_API 2186#if EV_FEATURE_API
1614unsigned int 2187unsigned int
1615ev_iteration (EV_P) 2188ev_iteration (EV_P) EV_THROW
1616{ 2189{
1617 return loop_count; 2190 return loop_count;
1618} 2191}
1619 2192
1620unsigned int 2193unsigned int
1621ev_depth (EV_P) 2194ev_depth (EV_P) EV_THROW
1622{ 2195{
1623 return loop_depth; 2196 return loop_depth;
1624} 2197}
1625 2198
1626void 2199void
1627ev_set_io_collect_interval (EV_P_ ev_tstamp interval) 2200ev_set_io_collect_interval (EV_P_ ev_tstamp interval) EV_THROW
1628{ 2201{
1629 io_blocktime = interval; 2202 io_blocktime = interval;
1630} 2203}
1631 2204
1632void 2205void
1633ev_set_timeout_collect_interval (EV_P_ ev_tstamp interval) 2206ev_set_timeout_collect_interval (EV_P_ ev_tstamp interval) EV_THROW
1634{ 2207{
1635 timeout_blocktime = interval; 2208 timeout_blocktime = interval;
1636} 2209}
1637 2210
1638void 2211void
1639ev_set_userdata (EV_P_ void *data) 2212ev_set_userdata (EV_P_ void *data) EV_THROW
1640{ 2213{
1641 userdata = data; 2214 userdata = data;
1642} 2215}
1643 2216
1644void * 2217void *
1645ev_userdata (EV_P) 2218ev_userdata (EV_P) EV_THROW
1646{ 2219{
1647 return userdata; 2220 return userdata;
1648} 2221}
1649 2222
2223void
1650void ev_set_invoke_pending_cb (EV_P_ void (*invoke_pending_cb)(EV_P)) 2224ev_set_invoke_pending_cb (EV_P_ void (*invoke_pending_cb)(EV_P)) EV_THROW
1651{ 2225{
1652 invoke_cb = invoke_pending_cb; 2226 invoke_cb = invoke_pending_cb;
1653} 2227}
1654 2228
2229void
1655void ev_set_loop_release_cb (EV_P_ void (*release)(EV_P), void (*acquire)(EV_P)) 2230ev_set_loop_release_cb (EV_P_ void (*release)(EV_P) EV_THROW, void (*acquire)(EV_P) EV_THROW) EV_THROW
1656{ 2231{
1657 release_cb = release; 2232 release_cb = release;
1658 acquire_cb = acquire; 2233 acquire_cb = acquire;
1659} 2234}
1660#endif 2235#endif
1661 2236
1662/* initialise a loop structure, must be zero-initialised */ 2237/* initialise a loop structure, must be zero-initialised */
1663static void noinline 2238static void noinline ecb_cold
1664loop_init (EV_P_ unsigned int flags) 2239loop_init (EV_P_ unsigned int flags) EV_THROW
1665{ 2240{
1666 if (!backend) 2241 if (!backend)
1667 { 2242 {
1668 origflags = flags; 2243 origflags = flags;
1669 2244
… …
1696 if (!(flags & EVFLAG_NOENV) 2271 if (!(flags & EVFLAG_NOENV)
1697 && !enable_secure () 2272 && !enable_secure ()
1698 && getenv ("LIBEV_FLAGS")) 2273 && getenv ("LIBEV_FLAGS"))
1699 flags = atoi (getenv ("LIBEV_FLAGS")); 2274 flags = atoi (getenv ("LIBEV_FLAGS"));
1700 2275
1701 ev_rt_now = ev_time (); 2276 ev_rt_now = ev_time ();
1702 mn_now = get_clock (); 2277 mn_now = get_clock ();
1703 now_floor = mn_now; 2278 now_floor = mn_now;
1704 rtmn_diff = ev_rt_now - mn_now; 2279 rtmn_diff = ev_rt_now - mn_now;
1705#if EV_FEATURE_API 2280#if EV_FEATURE_API
1706 invoke_cb = ev_invoke_pending; 2281 invoke_cb = ev_invoke_pending;
1707#endif 2282#endif
1708 2283
1709 io_blocktime = 0.; 2284 io_blocktime = 0.;
1710 timeout_blocktime = 0.; 2285 timeout_blocktime = 0.;
1711 backend = 0; 2286 backend = 0;
1712 backend_fd = -1; 2287 backend_fd = -1;
1713 sig_pending = 0; 2288 sig_pending = 0;
1714#if EV_ASYNC_ENABLE 2289#if EV_ASYNC_ENABLE
1715 async_pending = 0; 2290 async_pending = 0;
1716#endif 2291#endif
2292 pipe_write_skipped = 0;
2293 pipe_write_wanted = 0;
1717#if EV_USE_INOTIFY 2294#if EV_USE_INOTIFY
1718 fs_fd = flags & EVFLAG_NOINOTIFY ? -1 : -2; 2295 fs_fd = flags & EVFLAG_NOINOTIFY ? -1 : -2;
1719#endif 2296#endif
1720#if EV_USE_SIGNALFD 2297#if EV_USE_SIGNALFD
1721 sigfd = flags & EVFLAG_SIGNALFD ? -2 : -1; 2298 sigfd = flags & EVFLAG_SIGNALFD ? -2 : -1;
1722#endif 2299#endif
1723 2300
1724 if (!(flags & EVBACKEND_MASK)) 2301 if (!(flags & EVBACKEND_MASK))
1725 flags |= ev_recommended_backends (); 2302 flags |= ev_recommended_backends ();
1726 2303
… …
1751#endif 2328#endif
1752 } 2329 }
1753} 2330}
1754 2331
1755/* free up a loop structure */ 2332/* free up a loop structure */
1756void 2333void ecb_cold
1757ev_loop_destroy (EV_P) 2334ev_loop_destroy (EV_P)
1758{ 2335{
1759 int i; 2336 int i;
1760 2337
1761#if EV_MULTIPLICITY 2338#if EV_MULTIPLICITY
… …
1891 infy_fork (EV_A); 2468 infy_fork (EV_A);
1892#endif 2469#endif
1893 2470
1894 if (ev_is_active (&pipe_w)) 2471 if (ev_is_active (&pipe_w))
1895 { 2472 {
1896 /* this "locks" the handlers against writing to the pipe */ 2473 /* 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 2474
1903 ev_ref (EV_A); 2475 ev_ref (EV_A);
1904 ev_io_stop (EV_A_ &pipe_w); 2476 ev_io_stop (EV_A_ &pipe_w);
1905 2477
1906#if EV_USE_EVENTFD 2478#if EV_USE_EVENTFD
… …
1924 postfork = 0; 2496 postfork = 0;
1925} 2497}
1926 2498
1927#if EV_MULTIPLICITY 2499#if EV_MULTIPLICITY
1928 2500
1929struct ev_loop * 2501struct ev_loop * ecb_cold
1930ev_loop_new (unsigned int flags) 2502ev_loop_new (unsigned int flags) EV_THROW
1931{ 2503{
1932 EV_P = (struct ev_loop *)ev_malloc (sizeof (struct ev_loop)); 2504 EV_P = (struct ev_loop *)ev_malloc (sizeof (struct ev_loop));
1933 2505
1934 memset (EV_A, 0, sizeof (struct ev_loop)); 2506 memset (EV_A, 0, sizeof (struct ev_loop));
1935 loop_init (EV_A_ flags); 2507 loop_init (EV_A_ flags);
… …
1942} 2514}
1943 2515
1944#endif /* multiplicity */ 2516#endif /* multiplicity */
1945 2517
1946#if EV_VERIFY 2518#if EV_VERIFY
1947static void noinline 2519static void noinline ecb_cold
1948verify_watcher (EV_P_ W w) 2520verify_watcher (EV_P_ W w)
1949{ 2521{
1950 assert (("libev: watcher has invalid priority", ABSPRI (w) >= 0 && ABSPRI (w) < NUMPRI)); 2522 assert (("libev: watcher has invalid priority", ABSPRI (w) >= 0 && ABSPRI (w) < NUMPRI));
1951 2523
1952 if (w->pending) 2524 if (w->pending)
1953 assert (("libev: pending watcher not on pending queue", pendings [ABSPRI (w)][w->pending - 1].w == w)); 2525 assert (("libev: pending watcher not on pending queue", pendings [ABSPRI (w)][w->pending - 1].w == w));
1954} 2526}
1955 2527
1956static void noinline 2528static void noinline ecb_cold
1957verify_heap (EV_P_ ANHE *heap, int N) 2529verify_heap (EV_P_ ANHE *heap, int N)
1958{ 2530{
1959 int i; 2531 int i;
1960 2532
1961 for (i = HEAP0; i < N + HEAP0; ++i) 2533 for (i = HEAP0; i < N + HEAP0; ++i)
… …
1966 2538
1967 verify_watcher (EV_A_ (W)ANHE_w (heap [i])); 2539 verify_watcher (EV_A_ (W)ANHE_w (heap [i]));
1968 } 2540 }
1969} 2541}
1970 2542
1971static void noinline 2543static void noinline ecb_cold
1972array_verify (EV_P_ W *ws, int cnt) 2544array_verify (EV_P_ W *ws, int cnt)
1973{ 2545{
1974 while (cnt--) 2546 while (cnt--)
1975 { 2547 {
1976 assert (("libev: active index mismatch", ev_active (ws [cnt]) == cnt + 1)); 2548 assert (("libev: active index mismatch", ev_active (ws [cnt]) == cnt + 1));
… …
1978 } 2550 }
1979} 2551}
1980#endif 2552#endif
1981 2553
1982#if EV_FEATURE_API 2554#if EV_FEATURE_API
1983void 2555void ecb_cold
1984ev_verify (EV_P) 2556ev_verify (EV_P) EV_THROW
1985{ 2557{
1986#if EV_VERIFY 2558#if EV_VERIFY
1987 int i; 2559 int i, j;
1988 WL w; 2560 WL w, w2;
1989 2561
1990 assert (activecnt >= -1); 2562 assert (activecnt >= -1);
1991 2563
1992 assert (fdchangemax >= fdchangecnt); 2564 assert (fdchangemax >= fdchangecnt);
1993 for (i = 0; i < fdchangecnt; ++i) 2565 for (i = 0; i < fdchangecnt; ++i)
1994 assert (("libev: negative fd in fdchanges", fdchanges [i] >= 0)); 2566 assert (("libev: negative fd in fdchanges", fdchanges [i] >= 0));
1995 2567
1996 assert (anfdmax >= 0); 2568 assert (anfdmax >= 0);
1997 for (i = 0; i < anfdmax; ++i) 2569 for (i = j = 0; i < anfdmax; ++i)
1998 for (w = anfds [i].head; w; w = w->next) 2570 for (w = w2 = anfds [i].head; w; w = w->next)
1999 { 2571 {
2000 verify_watcher (EV_A_ (W)w); 2572 verify_watcher (EV_A_ (W)w);
2573
2574 if (++j & 1)
2575 w2 = w2->next;
2576
2577 assert (("libev: io watcher list contains a loop", w != w2));
2001 assert (("libev: inactive fd watcher on anfd list", ev_active (w) == 1)); 2578 assert (("libev: inactive fd watcher on anfd list", ev_active (w) == 1));
2002 assert (("libev: fd mismatch between watcher and anfd", ((ev_io *)w)->fd == i)); 2579 assert (("libev: fd mismatch between watcher and anfd", ((ev_io *)w)->fd == i));
2003 } 2580 }
2004 2581
2005 assert (timermax >= timercnt); 2582 assert (timermax >= timercnt);
… …
2054#endif 2631#endif
2055} 2632}
2056#endif 2633#endif
2057 2634
2058#if EV_MULTIPLICITY 2635#if EV_MULTIPLICITY
2059struct ev_loop * 2636struct ev_loop * ecb_cold
2060#else 2637#else
2061int 2638int
2062#endif 2639#endif
2063ev_default_loop (unsigned int flags) 2640ev_default_loop (unsigned int flags) EV_THROW
2064{ 2641{
2065 if (!ev_default_loop_ptr) 2642 if (!ev_default_loop_ptr)
2066 { 2643 {
2067#if EV_MULTIPLICITY 2644#if EV_MULTIPLICITY
2068 EV_P = ev_default_loop_ptr = &default_loop_struct; 2645 EV_P = ev_default_loop_ptr = &default_loop_struct;
… …
2087 2664
2088 return ev_default_loop_ptr; 2665 return ev_default_loop_ptr;
2089} 2666}
2090 2667
2091void 2668void
2092ev_loop_fork (EV_P) 2669ev_loop_fork (EV_P) EV_THROW
2093{ 2670{
2094 postfork = 1; /* must be in line with ev_default_fork */ 2671 postfork = 1; /* must be in line with ev_default_fork */
2095} 2672}
2096 2673
2097/*****************************************************************************/ 2674/*****************************************************************************/
… …
2101{ 2678{
2102 EV_CB_INVOKE ((W)w, revents); 2679 EV_CB_INVOKE ((W)w, revents);
2103} 2680}
2104 2681
2105unsigned int 2682unsigned int
2106ev_pending_count (EV_P) 2683ev_pending_count (EV_P) EV_THROW
2107{ 2684{
2108 int pri; 2685 int pri;
2109 unsigned int count = 0; 2686 unsigned int count = 0;
2110 2687
2111 for (pri = NUMPRI; pri--; ) 2688 for (pri = NUMPRI; pri--; )
… …
2115} 2692}
2116 2693
2117void noinline 2694void noinline
2118ev_invoke_pending (EV_P) 2695ev_invoke_pending (EV_P)
2119{ 2696{
2120 int pri; 2697 for (pendingpri = NUMPRI; pendingpri--; ) /* pendingpri is modified during the loop */
2121
2122 for (pri = NUMPRI; pri--; )
2123 while (pendingcnt [pri]) 2698 while (pendingcnt [pendingpri])
2124 { 2699 {
2125 ANPENDING *p = pendings [pri] + --pendingcnt [pri]; 2700 ANPENDING *p = pendings [pendingpri] + --pendingcnt [pendingpri];
2126 2701
2127 p->w->pending = 0; 2702 p->w->pending = 0;
2128 EV_CB_INVOKE (p->w, p->events); 2703 EV_CB_INVOKE (p->w, p->events);
2129 EV_FREQUENT_CHECK; 2704 EV_FREQUENT_CHECK;
2130 } 2705 }
… …
2193 } 2768 }
2194} 2769}
2195 2770
2196#if EV_PERIODIC_ENABLE 2771#if EV_PERIODIC_ENABLE
2197 2772
2198inline_speed 2773static void noinline
2199periodic_recalc (EV_P_ ev_periodic *w) 2774periodic_recalc (EV_P_ ev_periodic *w)
2200{ 2775{
2201 /* TODO: use slow but potentially more correct incremental algo, */ 2776 ev_tstamp interval = w->interval > MIN_INTERVAL ? w->interval : MIN_INTERVAL;
2202 /* also do not rely on ceil */ 2777 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; 2778
2779 /* the above almost always errs on the low side */
2780 while (at <= ev_rt_now)
2781 {
2782 ev_tstamp nat = at + w->interval;
2783
2784 /* when resolution fails us, we use ev_rt_now */
2785 if (expect_false (nat == at))
2786 {
2787 at = ev_rt_now;
2788 break;
2789 }
2790
2791 at = nat;
2792 }
2793
2794 ev_at (w) = at;
2204} 2795}
2205 2796
2206/* make periodics pending */ 2797/* make periodics pending */
2207inline_size void 2798inline_size void
2208periodics_reify (EV_P) 2799periodics_reify (EV_P)
… …
2230 downheap (periodics, periodiccnt, HEAP0); 2821 downheap (periodics, periodiccnt, HEAP0);
2231 } 2822 }
2232 else if (w->interval) 2823 else if (w->interval)
2233 { 2824 {
2234 periodic_recalc (EV_A_ w); 2825 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]); 2826 ANHE_at_cache (periodics [HEAP0]);
2250 downheap (periodics, periodiccnt, HEAP0); 2827 downheap (periodics, periodiccnt, HEAP0);
2251 } 2828 }
2252 else 2829 else
2253 ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */ 2830 ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */
… …
2261 } 2838 }
2262} 2839}
2263 2840
2264/* simply recalculate all periodics */ 2841/* simply recalculate all periodics */
2265/* TODO: maybe ensure that at least one event happens when jumping forward? */ 2842/* TODO: maybe ensure that at least one event happens when jumping forward? */
2266static void noinline 2843static void noinline ecb_cold
2267periodics_reschedule (EV_P) 2844periodics_reschedule (EV_P)
2268{ 2845{
2269 int i; 2846 int i;
2270 2847
2271 /* adjust periodics after time jump */ 2848 /* adjust periodics after time jump */
… …
2284 reheap (periodics, periodiccnt); 2861 reheap (periodics, periodiccnt);
2285} 2862}
2286#endif 2863#endif
2287 2864
2288/* adjust all timers by a given offset */ 2865/* adjust all timers by a given offset */
2289static void noinline 2866static void noinline ecb_cold
2290timers_reschedule (EV_P_ ev_tstamp adjust) 2867timers_reschedule (EV_P_ ev_tstamp adjust)
2291{ 2868{
2292 int i; 2869 int i;
2293 2870
2294 for (i = 0; i < timercnt; ++i) 2871 for (i = 0; i < timercnt; ++i)
… …
2331 * doesn't hurt either as we only do this on time-jumps or 2908 * doesn't hurt either as we only do this on time-jumps or
2332 * in the unlikely event of having been preempted here. 2909 * in the unlikely event of having been preempted here.
2333 */ 2910 */
2334 for (i = 4; --i; ) 2911 for (i = 4; --i; )
2335 { 2912 {
2913 ev_tstamp diff;
2336 rtmn_diff = ev_rt_now - mn_now; 2914 rtmn_diff = ev_rt_now - mn_now;
2337 2915
2916 diff = odiff - rtmn_diff;
2917
2338 if (expect_true (fabs (odiff - rtmn_diff) < MIN_TIMEJUMP)) 2918 if (expect_true ((diff < 0. ? -diff : diff) < MIN_TIMEJUMP))
2339 return; /* all is well */ 2919 return; /* all is well */
2340 2920
2341 ev_rt_now = ev_time (); 2921 ev_rt_now = ev_time ();
2342 mn_now = get_clock (); 2922 mn_now = get_clock ();
2343 now_floor = mn_now; 2923 now_floor = mn_now;
… …
2365 2945
2366 mn_now = ev_rt_now; 2946 mn_now = ev_rt_now;
2367 } 2947 }
2368} 2948}
2369 2949
2370void 2950int
2371ev_run (EV_P_ int flags) 2951ev_run (EV_P_ int flags)
2372{ 2952{
2373#if EV_FEATURE_API 2953#if EV_FEATURE_API
2374 ++loop_depth; 2954 ++loop_depth;
2375#endif 2955#endif
… …
2433 ev_tstamp prev_mn_now = mn_now; 3013 ev_tstamp prev_mn_now = mn_now;
2434 3014
2435 /* update time to cancel out callback processing overhead */ 3015 /* update time to cancel out callback processing overhead */
2436 time_update (EV_A_ 1e100); 3016 time_update (EV_A_ 1e100);
2437 3017
3018 /* from now on, we want a pipe-wake-up */
3019 pipe_write_wanted = 1;
3020
3021 ECB_MEMORY_FENCE; /* make sure pipe_write_wanted is visible before we check for potential skips */
3022
2438 if (expect_true (!(flags & EVRUN_NOWAIT || idleall || !activecnt))) 3023 if (expect_true (!(flags & EVRUN_NOWAIT || idleall || !activecnt || pipe_write_skipped)))
2439 { 3024 {
2440 waittime = MAX_BLOCKTIME; 3025 waittime = MAX_BLOCKTIME;
2441 3026
2442 if (timercnt) 3027 if (timercnt)
2443 { 3028 {
2444 ev_tstamp to = ANHE_at (timers [HEAP0]) - mn_now + backend_fudge; 3029 ev_tstamp to = ANHE_at (timers [HEAP0]) - mn_now;
2445 if (waittime > to) waittime = to; 3030 if (waittime > to) waittime = to;
2446 } 3031 }
2447 3032
2448#if EV_PERIODIC_ENABLE 3033#if EV_PERIODIC_ENABLE
2449 if (periodiccnt) 3034 if (periodiccnt)
2450 { 3035 {
2451 ev_tstamp to = ANHE_at (periodics [HEAP0]) - ev_rt_now + backend_fudge; 3036 ev_tstamp to = ANHE_at (periodics [HEAP0]) - ev_rt_now;
2452 if (waittime > to) waittime = to; 3037 if (waittime > to) waittime = to;
2453 } 3038 }
2454#endif 3039#endif
2455 3040
2456 /* don't let timeouts decrease the waittime below timeout_blocktime */ 3041 /* don't let timeouts decrease the waittime below timeout_blocktime */
2457 if (expect_false (waittime < timeout_blocktime)) 3042 if (expect_false (waittime < timeout_blocktime))
2458 waittime = timeout_blocktime; 3043 waittime = timeout_blocktime;
3044
3045 /* at this point, we NEED to wait, so we have to ensure */
3046 /* to pass a minimum nonzero value to the backend */
3047 if (expect_false (waittime < backend_mintime))
3048 waittime = backend_mintime;
2459 3049
2460 /* extra check because io_blocktime is commonly 0 */ 3050 /* extra check because io_blocktime is commonly 0 */
2461 if (expect_false (io_blocktime)) 3051 if (expect_false (io_blocktime))
2462 { 3052 {
2463 sleeptime = io_blocktime - (mn_now - prev_mn_now); 3053 sleeptime = io_blocktime - (mn_now - prev_mn_now);
2464 3054
2465 if (sleeptime > waittime - backend_fudge) 3055 if (sleeptime > waittime - backend_mintime)
2466 sleeptime = waittime - backend_fudge; 3056 sleeptime = waittime - backend_mintime;
2467 3057
2468 if (expect_true (sleeptime > 0.)) 3058 if (expect_true (sleeptime > 0.))
2469 { 3059 {
2470 ev_sleep (sleeptime); 3060 ev_sleep (sleeptime);
2471 waittime -= sleeptime; 3061 waittime -= sleeptime;
… …
2478#endif 3068#endif
2479 assert ((loop_done = EVBREAK_RECURSE, 1)); /* assert for side effect */ 3069 assert ((loop_done = EVBREAK_RECURSE, 1)); /* assert for side effect */
2480 backend_poll (EV_A_ waittime); 3070 backend_poll (EV_A_ waittime);
2481 assert ((loop_done = EVBREAK_CANCEL, 1)); /* assert for side effect */ 3071 assert ((loop_done = EVBREAK_CANCEL, 1)); /* assert for side effect */
2482 3072
3073 pipe_write_wanted = 0; /* just an optimisation, no fence needed */
3074
3075 if (pipe_write_skipped)
3076 {
3077 assert (("libev: pipe_w not active, but pipe not written", ev_is_active (&pipe_w)));
3078 ev_feed_event (EV_A_ &pipe_w, EV_CUSTOM);
3079 }
3080
3081
2483 /* update ev_rt_now, do magic */ 3082 /* update ev_rt_now, do magic */
2484 time_update (EV_A_ waittime + sleeptime); 3083 time_update (EV_A_ waittime + sleeptime);
2485 } 3084 }
2486 3085
2487 /* queue pending timers and reschedule them */ 3086 /* queue pending timers and reschedule them */
… …
2513 loop_done = EVBREAK_CANCEL; 3112 loop_done = EVBREAK_CANCEL;
2514 3113
2515#if EV_FEATURE_API 3114#if EV_FEATURE_API
2516 --loop_depth; 3115 --loop_depth;
2517#endif 3116#endif
3117
3118 return activecnt;
2518} 3119}
2519 3120
2520void 3121void
2521ev_break (EV_P_ int how) 3122ev_break (EV_P_ int how) EV_THROW
2522{ 3123{
2523 loop_done = how; 3124 loop_done = how;
2524} 3125}
2525 3126
2526void 3127void
2527ev_ref (EV_P) 3128ev_ref (EV_P) EV_THROW
2528{ 3129{
2529 ++activecnt; 3130 ++activecnt;
2530} 3131}
2531 3132
2532void 3133void
2533ev_unref (EV_P) 3134ev_unref (EV_P) EV_THROW
2534{ 3135{
2535 --activecnt; 3136 --activecnt;
2536} 3137}
2537 3138
2538void 3139void
2539ev_now_update (EV_P) 3140ev_now_update (EV_P) EV_THROW
2540{ 3141{
2541 time_update (EV_A_ 1e100); 3142 time_update (EV_A_ 1e100);
2542} 3143}
2543 3144
2544void 3145void
2545ev_suspend (EV_P) 3146ev_suspend (EV_P) EV_THROW
2546{ 3147{
2547 ev_now_update (EV_A); 3148 ev_now_update (EV_A);
2548} 3149}
2549 3150
2550void 3151void
2551ev_resume (EV_P) 3152ev_resume (EV_P) EV_THROW
2552{ 3153{
2553 ev_tstamp mn_prev = mn_now; 3154 ev_tstamp mn_prev = mn_now;
2554 3155
2555 ev_now_update (EV_A); 3156 ev_now_update (EV_A);
2556 timers_reschedule (EV_A_ mn_now - mn_prev); 3157 timers_reschedule (EV_A_ mn_now - mn_prev);
… …
2595 w->pending = 0; 3196 w->pending = 0;
2596 } 3197 }
2597} 3198}
2598 3199
2599int 3200int
2600ev_clear_pending (EV_P_ void *w) 3201ev_clear_pending (EV_P_ void *w) EV_THROW
2601{ 3202{
2602 W w_ = (W)w; 3203 W w_ = (W)w;
2603 int pending = w_->pending; 3204 int pending = w_->pending;
2604 3205
2605 if (expect_true (pending)) 3206 if (expect_true (pending))
… …
2638} 3239}
2639 3240
2640/*****************************************************************************/ 3241/*****************************************************************************/
2641 3242
2642void noinline 3243void noinline
2643ev_io_start (EV_P_ ev_io *w) 3244ev_io_start (EV_P_ ev_io *w) EV_THROW
2644{ 3245{
2645 int fd = w->fd; 3246 int fd = w->fd;
2646 3247
2647 if (expect_false (ev_is_active (w))) 3248 if (expect_false (ev_is_active (w)))
2648 return; 3249 return;
… …
2654 3255
2655 ev_start (EV_A_ (W)w, 1); 3256 ev_start (EV_A_ (W)w, 1);
2656 array_needsize (ANFD, anfds, anfdmax, fd + 1, array_init_zero); 3257 array_needsize (ANFD, anfds, anfdmax, fd + 1, array_init_zero);
2657 wlist_add (&anfds[fd].head, (WL)w); 3258 wlist_add (&anfds[fd].head, (WL)w);
2658 3259
3260 /* common bug, apparently */
3261 assert (("libev: ev_io_start called with corrupted watcher", ((WL)w)->next != (WL)w));
3262
2659 fd_change (EV_A_ fd, w->events & EV__IOFDSET | EV_ANFD_REIFY); 3263 fd_change (EV_A_ fd, w->events & EV__IOFDSET | EV_ANFD_REIFY);
2660 w->events &= ~EV__IOFDSET; 3264 w->events &= ~EV__IOFDSET;
2661 3265
2662 EV_FREQUENT_CHECK; 3266 EV_FREQUENT_CHECK;
2663} 3267}
2664 3268
2665void noinline 3269void noinline
2666ev_io_stop (EV_P_ ev_io *w) 3270ev_io_stop (EV_P_ ev_io *w) EV_THROW
2667{ 3271{
2668 clear_pending (EV_A_ (W)w); 3272 clear_pending (EV_A_ (W)w);
2669 if (expect_false (!ev_is_active (w))) 3273 if (expect_false (!ev_is_active (w)))
2670 return; 3274 return;
2671 3275
… …
2680 3284
2681 EV_FREQUENT_CHECK; 3285 EV_FREQUENT_CHECK;
2682} 3286}
2683 3287
2684void noinline 3288void noinline
2685ev_timer_start (EV_P_ ev_timer *w) 3289ev_timer_start (EV_P_ ev_timer *w) EV_THROW
2686{ 3290{
2687 if (expect_false (ev_is_active (w))) 3291 if (expect_false (ev_is_active (w)))
2688 return; 3292 return;
2689 3293
2690 ev_at (w) += mn_now; 3294 ev_at (w) += mn_now;
… …
2704 3308
2705 /*assert (("libev: internal timer heap corruption", timers [ev_active (w)] == (WT)w));*/ 3309 /*assert (("libev: internal timer heap corruption", timers [ev_active (w)] == (WT)w));*/
2706} 3310}
2707 3311
2708void noinline 3312void noinline
2709ev_timer_stop (EV_P_ ev_timer *w) 3313ev_timer_stop (EV_P_ ev_timer *w) EV_THROW
2710{ 3314{
2711 clear_pending (EV_A_ (W)w); 3315 clear_pending (EV_A_ (W)w);
2712 if (expect_false (!ev_is_active (w))) 3316 if (expect_false (!ev_is_active (w)))
2713 return; 3317 return;
2714 3318
… …
2734 3338
2735 EV_FREQUENT_CHECK; 3339 EV_FREQUENT_CHECK;
2736} 3340}
2737 3341
2738void noinline 3342void noinline
2739ev_timer_again (EV_P_ ev_timer *w) 3343ev_timer_again (EV_P_ ev_timer *w) EV_THROW
2740{ 3344{
2741 EV_FREQUENT_CHECK; 3345 EV_FREQUENT_CHECK;
3346
3347 clear_pending (EV_A_ (W)w);
2742 3348
2743 if (ev_is_active (w)) 3349 if (ev_is_active (w))
2744 { 3350 {
2745 if (w->repeat) 3351 if (w->repeat)
2746 { 3352 {
… …
2759 3365
2760 EV_FREQUENT_CHECK; 3366 EV_FREQUENT_CHECK;
2761} 3367}
2762 3368
2763ev_tstamp 3369ev_tstamp
2764ev_timer_remaining (EV_P_ ev_timer *w) 3370ev_timer_remaining (EV_P_ ev_timer *w) EV_THROW
2765{ 3371{
2766 return ev_at (w) - (ev_is_active (w) ? mn_now : 0.); 3372 return ev_at (w) - (ev_is_active (w) ? mn_now : 0.);
2767} 3373}
2768 3374
2769#if EV_PERIODIC_ENABLE 3375#if EV_PERIODIC_ENABLE
2770void noinline 3376void noinline
2771ev_periodic_start (EV_P_ ev_periodic *w) 3377ev_periodic_start (EV_P_ ev_periodic *w) EV_THROW
2772{ 3378{
2773 if (expect_false (ev_is_active (w))) 3379 if (expect_false (ev_is_active (w)))
2774 return; 3380 return;
2775 3381
2776 if (w->reschedule_cb) 3382 if (w->reschedule_cb)
… …
2796 3402
2797 /*assert (("libev: internal periodic heap corruption", ANHE_w (periodics [ev_active (w)]) == (WT)w));*/ 3403 /*assert (("libev: internal periodic heap corruption", ANHE_w (periodics [ev_active (w)]) == (WT)w));*/
2798} 3404}
2799 3405
2800void noinline 3406void noinline
2801ev_periodic_stop (EV_P_ ev_periodic *w) 3407ev_periodic_stop (EV_P_ ev_periodic *w) EV_THROW
2802{ 3408{
2803 clear_pending (EV_A_ (W)w); 3409 clear_pending (EV_A_ (W)w);
2804 if (expect_false (!ev_is_active (w))) 3410 if (expect_false (!ev_is_active (w)))
2805 return; 3411 return;
2806 3412
… …
2824 3430
2825 EV_FREQUENT_CHECK; 3431 EV_FREQUENT_CHECK;
2826} 3432}
2827 3433
2828void noinline 3434void noinline
2829ev_periodic_again (EV_P_ ev_periodic *w) 3435ev_periodic_again (EV_P_ ev_periodic *w) EV_THROW
2830{ 3436{
2831 /* TODO: use adjustheap and recalculation */ 3437 /* TODO: use adjustheap and recalculation */
2832 ev_periodic_stop (EV_A_ w); 3438 ev_periodic_stop (EV_A_ w);
2833 ev_periodic_start (EV_A_ w); 3439 ev_periodic_start (EV_A_ w);
2834} 3440}
… …
2839#endif 3445#endif
2840 3446
2841#if EV_SIGNAL_ENABLE 3447#if EV_SIGNAL_ENABLE
2842 3448
2843void noinline 3449void noinline
2844ev_signal_start (EV_P_ ev_signal *w) 3450ev_signal_start (EV_P_ ev_signal *w) EV_THROW
2845{ 3451{
2846 if (expect_false (ev_is_active (w))) 3452 if (expect_false (ev_is_active (w)))
2847 return; 3453 return;
2848 3454
2849 assert (("libev: ev_signal_start called with illegal signal number", w->signum > 0 && w->signum < EV_NSIG)); 3455 assert (("libev: ev_signal_start called with illegal signal number", w->signum > 0 && w->signum < EV_NSIG));
… …
2920 3526
2921 EV_FREQUENT_CHECK; 3527 EV_FREQUENT_CHECK;
2922} 3528}
2923 3529
2924void noinline 3530void noinline
2925ev_signal_stop (EV_P_ ev_signal *w) 3531ev_signal_stop (EV_P_ ev_signal *w) EV_THROW
2926{ 3532{
2927 clear_pending (EV_A_ (W)w); 3533 clear_pending (EV_A_ (W)w);
2928 if (expect_false (!ev_is_active (w))) 3534 if (expect_false (!ev_is_active (w)))
2929 return; 3535 return;
2930 3536
… …
2961#endif 3567#endif
2962 3568
2963#if EV_CHILD_ENABLE 3569#if EV_CHILD_ENABLE
2964 3570
2965void 3571void
2966ev_child_start (EV_P_ ev_child *w) 3572ev_child_start (EV_P_ ev_child *w) EV_THROW
2967{ 3573{
2968#if EV_MULTIPLICITY 3574#if EV_MULTIPLICITY
2969 assert (("libev: child watchers are only supported in the default loop", loop == ev_default_loop_ptr)); 3575 assert (("libev: child watchers are only supported in the default loop", loop == ev_default_loop_ptr));
2970#endif 3576#endif
2971 if (expect_false (ev_is_active (w))) 3577 if (expect_false (ev_is_active (w)))
… …
2978 3584
2979 EV_FREQUENT_CHECK; 3585 EV_FREQUENT_CHECK;
2980} 3586}
2981 3587
2982void 3588void
2983ev_child_stop (EV_P_ ev_child *w) 3589ev_child_stop (EV_P_ ev_child *w) EV_THROW
2984{ 3590{
2985 clear_pending (EV_A_ (W)w); 3591 clear_pending (EV_A_ (W)w);
2986 if (expect_false (!ev_is_active (w))) 3592 if (expect_false (!ev_is_active (w)))
2987 return; 3593 return;
2988 3594
… …
3063 if (!pend || pend == path) 3669 if (!pend || pend == path)
3064 break; 3670 break;
3065 3671
3066 *pend = 0; 3672 *pend = 0;
3067 w->wd = inotify_add_watch (fs_fd, path, mask); 3673 w->wd = inotify_add_watch (fs_fd, path, mask);
3068 } 3674 }
3069 while (w->wd < 0 && (errno == ENOENT || errno == EACCES)); 3675 while (w->wd < 0 && (errno == ENOENT || errno == EACCES));
3070 } 3676 }
3071 } 3677 }
3072 3678
3073 if (w->wd >= 0) 3679 if (w->wd >= 0)
… …
3140 infy_wd (EV_A_ ev->wd, ev->wd, ev); 3746 infy_wd (EV_A_ ev->wd, ev->wd, ev);
3141 ofs += sizeof (struct inotify_event) + ev->len; 3747 ofs += sizeof (struct inotify_event) + ev->len;
3142 } 3748 }
3143} 3749}
3144 3750
3145inline_size void 3751inline_size void ecb_cold
3146ev_check_2625 (EV_P) 3752ev_check_2625 (EV_P)
3147{ 3753{
3148 /* kernels < 2.6.25 are borked 3754 /* kernels < 2.6.25 are borked
3149 * http://www.ussg.indiana.edu/hypermail/linux/kernel/0711.3/1208.html 3755 * http://www.ussg.indiana.edu/hypermail/linux/kernel/0711.3/1208.html
3150 */ 3756 */
… …
3155} 3761}
3156 3762
3157inline_size int 3763inline_size int
3158infy_newfd (void) 3764infy_newfd (void)
3159{ 3765{
3160#if defined (IN_CLOEXEC) && defined (IN_NONBLOCK) 3766#if defined IN_CLOEXEC && defined IN_NONBLOCK
3161 int fd = inotify_init1 (IN_CLOEXEC | IN_NONBLOCK); 3767 int fd = inotify_init1 (IN_CLOEXEC | IN_NONBLOCK);
3162 if (fd >= 0) 3768 if (fd >= 0)
3163 return fd; 3769 return fd;
3164#endif 3770#endif
3165 return inotify_init (); 3771 return inotify_init ();
… …
3240#else 3846#else
3241# define EV_LSTAT(p,b) lstat (p, b) 3847# define EV_LSTAT(p,b) lstat (p, b)
3242#endif 3848#endif
3243 3849
3244void 3850void
3245ev_stat_stat (EV_P_ ev_stat *w) 3851ev_stat_stat (EV_P_ ev_stat *w) EV_THROW
3246{ 3852{
3247 if (lstat (w->path, &w->attr) < 0) 3853 if (lstat (w->path, &w->attr) < 0)
3248 w->attr.st_nlink = 0; 3854 w->attr.st_nlink = 0;
3249 else if (!w->attr.st_nlink) 3855 else if (!w->attr.st_nlink)
3250 w->attr.st_nlink = 1; 3856 w->attr.st_nlink = 1;
… …
3289 ev_feed_event (EV_A_ w, EV_STAT); 3895 ev_feed_event (EV_A_ w, EV_STAT);
3290 } 3896 }
3291} 3897}
3292 3898
3293void 3899void
3294ev_stat_start (EV_P_ ev_stat *w) 3900ev_stat_start (EV_P_ ev_stat *w) EV_THROW
3295{ 3901{
3296 if (expect_false (ev_is_active (w))) 3902 if (expect_false (ev_is_active (w)))
3297 return; 3903 return;
3298 3904
3299 ev_stat_stat (EV_A_ w); 3905 ev_stat_stat (EV_A_ w);
… …
3320 3926
3321 EV_FREQUENT_CHECK; 3927 EV_FREQUENT_CHECK;
3322} 3928}
3323 3929
3324void 3930void
3325ev_stat_stop (EV_P_ ev_stat *w) 3931ev_stat_stop (EV_P_ ev_stat *w) EV_THROW
3326{ 3932{
3327 clear_pending (EV_A_ (W)w); 3933 clear_pending (EV_A_ (W)w);
3328 if (expect_false (!ev_is_active (w))) 3934 if (expect_false (!ev_is_active (w)))
3329 return; 3935 return;
3330 3936
… …
3346} 3952}
3347#endif 3953#endif
3348 3954
3349#if EV_IDLE_ENABLE 3955#if EV_IDLE_ENABLE
3350void 3956void
3351ev_idle_start (EV_P_ ev_idle *w) 3957ev_idle_start (EV_P_ ev_idle *w) EV_THROW
3352{ 3958{
3353 if (expect_false (ev_is_active (w))) 3959 if (expect_false (ev_is_active (w)))
3354 return; 3960 return;
3355 3961
3356 pri_adjust (EV_A_ (W)w); 3962 pri_adjust (EV_A_ (W)w);
… …
3369 3975
3370 EV_FREQUENT_CHECK; 3976 EV_FREQUENT_CHECK;
3371} 3977}
3372 3978
3373void 3979void
3374ev_idle_stop (EV_P_ ev_idle *w) 3980ev_idle_stop (EV_P_ ev_idle *w) EV_THROW
3375{ 3981{
3376 clear_pending (EV_A_ (W)w); 3982 clear_pending (EV_A_ (W)w);
3377 if (expect_false (!ev_is_active (w))) 3983 if (expect_false (!ev_is_active (w)))
3378 return; 3984 return;
3379 3985
… …
3393} 3999}
3394#endif 4000#endif
3395 4001
3396#if EV_PREPARE_ENABLE 4002#if EV_PREPARE_ENABLE
3397void 4003void
3398ev_prepare_start (EV_P_ ev_prepare *w) 4004ev_prepare_start (EV_P_ ev_prepare *w) EV_THROW
3399{ 4005{
3400 if (expect_false (ev_is_active (w))) 4006 if (expect_false (ev_is_active (w)))
3401 return; 4007 return;
3402 4008
3403 EV_FREQUENT_CHECK; 4009 EV_FREQUENT_CHECK;
… …
3408 4014
3409 EV_FREQUENT_CHECK; 4015 EV_FREQUENT_CHECK;
3410} 4016}
3411 4017
3412void 4018void
3413ev_prepare_stop (EV_P_ ev_prepare *w) 4019ev_prepare_stop (EV_P_ ev_prepare *w) EV_THROW
3414{ 4020{
3415 clear_pending (EV_A_ (W)w); 4021 clear_pending (EV_A_ (W)w);
3416 if (expect_false (!ev_is_active (w))) 4022 if (expect_false (!ev_is_active (w)))
3417 return; 4023 return;
3418 4024
… …
3431} 4037}
3432#endif 4038#endif
3433 4039
3434#if EV_CHECK_ENABLE 4040#if EV_CHECK_ENABLE
3435void 4041void
3436ev_check_start (EV_P_ ev_check *w) 4042ev_check_start (EV_P_ ev_check *w) EV_THROW
3437{ 4043{
3438 if (expect_false (ev_is_active (w))) 4044 if (expect_false (ev_is_active (w)))
3439 return; 4045 return;
3440 4046
3441 EV_FREQUENT_CHECK; 4047 EV_FREQUENT_CHECK;
… …
3446 4052
3447 EV_FREQUENT_CHECK; 4053 EV_FREQUENT_CHECK;
3448} 4054}
3449 4055
3450void 4056void
3451ev_check_stop (EV_P_ ev_check *w) 4057ev_check_stop (EV_P_ ev_check *w) EV_THROW
3452{ 4058{
3453 clear_pending (EV_A_ (W)w); 4059 clear_pending (EV_A_ (W)w);
3454 if (expect_false (!ev_is_active (w))) 4060 if (expect_false (!ev_is_active (w)))
3455 return; 4061 return;
3456 4062
… …
3469} 4075}
3470#endif 4076#endif
3471 4077
3472#if EV_EMBED_ENABLE 4078#if EV_EMBED_ENABLE
3473void noinline 4079void noinline
3474ev_embed_sweep (EV_P_ ev_embed *w) 4080ev_embed_sweep (EV_P_ ev_embed *w) EV_THROW
3475{ 4081{
3476 ev_run (w->other, EVRUN_NOWAIT); 4082 ev_run (w->other, EVRUN_NOWAIT);
3477} 4083}
3478 4084
3479static void 4085static void
… …
3527 ev_idle_stop (EV_A_ idle); 4133 ev_idle_stop (EV_A_ idle);
3528} 4134}
3529#endif 4135#endif
3530 4136
3531void 4137void
3532ev_embed_start (EV_P_ ev_embed *w) 4138ev_embed_start (EV_P_ ev_embed *w) EV_THROW
3533{ 4139{
3534 if (expect_false (ev_is_active (w))) 4140 if (expect_false (ev_is_active (w)))
3535 return; 4141 return;
3536 4142
3537 { 4143 {
… …
3558 4164
3559 EV_FREQUENT_CHECK; 4165 EV_FREQUENT_CHECK;
3560} 4166}
3561 4167
3562void 4168void
3563ev_embed_stop (EV_P_ ev_embed *w) 4169ev_embed_stop (EV_P_ ev_embed *w) EV_THROW
3564{ 4170{
3565 clear_pending (EV_A_ (W)w); 4171 clear_pending (EV_A_ (W)w);
3566 if (expect_false (!ev_is_active (w))) 4172 if (expect_false (!ev_is_active (w)))
3567 return; 4173 return;
3568 4174
… …
3578} 4184}
3579#endif 4185#endif
3580 4186
3581#if EV_FORK_ENABLE 4187#if EV_FORK_ENABLE
3582void 4188void
3583ev_fork_start (EV_P_ ev_fork *w) 4189ev_fork_start (EV_P_ ev_fork *w) EV_THROW
3584{ 4190{
3585 if (expect_false (ev_is_active (w))) 4191 if (expect_false (ev_is_active (w)))
3586 return; 4192 return;
3587 4193
3588 EV_FREQUENT_CHECK; 4194 EV_FREQUENT_CHECK;
… …
3593 4199
3594 EV_FREQUENT_CHECK; 4200 EV_FREQUENT_CHECK;
3595} 4201}
3596 4202
3597void 4203void
3598ev_fork_stop (EV_P_ ev_fork *w) 4204ev_fork_stop (EV_P_ ev_fork *w) EV_THROW
3599{ 4205{
3600 clear_pending (EV_A_ (W)w); 4206 clear_pending (EV_A_ (W)w);
3601 if (expect_false (!ev_is_active (w))) 4207 if (expect_false (!ev_is_active (w)))
3602 return; 4208 return;
3603 4209
… …
3616} 4222}
3617#endif 4223#endif
3618 4224
3619#if EV_CLEANUP_ENABLE 4225#if EV_CLEANUP_ENABLE
3620void 4226void
3621ev_cleanup_start (EV_P_ ev_cleanup *w) 4227ev_cleanup_start (EV_P_ ev_cleanup *w) EV_THROW
3622{ 4228{
3623 if (expect_false (ev_is_active (w))) 4229 if (expect_false (ev_is_active (w)))
3624 return; 4230 return;
3625 4231
3626 EV_FREQUENT_CHECK; 4232 EV_FREQUENT_CHECK;
… …
3633 ev_unref (EV_A); 4239 ev_unref (EV_A);
3634 EV_FREQUENT_CHECK; 4240 EV_FREQUENT_CHECK;
3635} 4241}
3636 4242
3637void 4243void
3638ev_cleanup_stop (EV_P_ ev_cleanup *w) 4244ev_cleanup_stop (EV_P_ ev_cleanup *w) EV_THROW
3639{ 4245{
3640 clear_pending (EV_A_ (W)w); 4246 clear_pending (EV_A_ (W)w);
3641 if (expect_false (!ev_is_active (w))) 4247 if (expect_false (!ev_is_active (w)))
3642 return; 4248 return;
3643 4249
… …
3657} 4263}
3658#endif 4264#endif
3659 4265
3660#if EV_ASYNC_ENABLE 4266#if EV_ASYNC_ENABLE
3661void 4267void
3662ev_async_start (EV_P_ ev_async *w) 4268ev_async_start (EV_P_ ev_async *w) EV_THROW
3663{ 4269{
3664 if (expect_false (ev_is_active (w))) 4270 if (expect_false (ev_is_active (w)))
3665 return; 4271 return;
3666 4272
3667 w->sent = 0; 4273 w->sent = 0;
… …
3676 4282
3677 EV_FREQUENT_CHECK; 4283 EV_FREQUENT_CHECK;
3678} 4284}
3679 4285
3680void 4286void
3681ev_async_stop (EV_P_ ev_async *w) 4287ev_async_stop (EV_P_ ev_async *w) EV_THROW
3682{ 4288{
3683 clear_pending (EV_A_ (W)w); 4289 clear_pending (EV_A_ (W)w);
3684 if (expect_false (!ev_is_active (w))) 4290 if (expect_false (!ev_is_active (w)))
3685 return; 4291 return;
3686 4292
… …
3697 4303
3698 EV_FREQUENT_CHECK; 4304 EV_FREQUENT_CHECK;
3699} 4305}
3700 4306
3701void 4307void
3702ev_async_send (EV_P_ ev_async *w) 4308ev_async_send (EV_P_ ev_async *w) EV_THROW
3703{ 4309{
3704 w->sent = 1; 4310 w->sent = 1;
3705 evpipe_write (EV_A_ &async_pending); 4311 evpipe_write (EV_A_ &async_pending);
3706} 4312}
3707#endif 4313#endif
… …
3744 4350
3745 once_cb (EV_A_ once, revents | ev_clear_pending (EV_A_ &once->io)); 4351 once_cb (EV_A_ once, revents | ev_clear_pending (EV_A_ &once->io));
3746} 4352}
3747 4353
3748void 4354void
3749ev_once (EV_P_ int fd, int events, ev_tstamp timeout, void (*cb)(int revents, void *arg), void *arg) 4355ev_once (EV_P_ int fd, int events, ev_tstamp timeout, void (*cb)(int revents, void *arg), void *arg) EV_THROW
3750{ 4356{
3751 struct ev_once *once = (struct ev_once *)ev_malloc (sizeof (struct ev_once)); 4357 struct ev_once *once = (struct ev_once *)ev_malloc (sizeof (struct ev_once));
3752 4358
3753 if (expect_false (!once)) 4359 if (expect_false (!once))
3754 { 4360 {
… …
3775} 4381}
3776 4382
3777/*****************************************************************************/ 4383/*****************************************************************************/
3778 4384
3779#if EV_WALK_ENABLE 4385#if EV_WALK_ENABLE
3780void 4386void ecb_cold
3781ev_walk (EV_P_ int types, void (*cb)(EV_P_ int type, void *w)) 4387ev_walk (EV_P_ int types, void (*cb)(EV_P_ int type, void *w)) EV_THROW
3782{ 4388{
3783 int i, j; 4389 int i, j;
3784 ev_watcher_list *wl, *wn; 4390 ev_watcher_list *wl, *wn;
3785 4391
3786 if (types & (EV_IO | EV_EMBED)) 4392 if (types & (EV_IO | EV_EMBED))
… …
3829 cb (EV_A_ EV_PERIODIC, ANHE_w (periodics [i])); 4435 cb (EV_A_ EV_PERIODIC, ANHE_w (periodics [i]));
3830#endif 4436#endif
3831 4437
3832#if EV_IDLE_ENABLE 4438#if EV_IDLE_ENABLE
3833 if (types & EV_IDLE) 4439 if (types & EV_IDLE)
3834 for (j = NUMPRI; i--; ) 4440 for (j = NUMPRI; j--; )
3835 for (i = idlecnt [j]; i--; ) 4441 for (i = idlecnt [j]; i--; )
3836 cb (EV_A_ EV_IDLE, idles [j][i]); 4442 cb (EV_A_ EV_IDLE, idles [j][i]);
3837#endif 4443#endif
3838 4444
3839#if EV_FORK_ENABLE 4445#if EV_FORK_ENABLE
… …
3892 4498
3893#if EV_MULTIPLICITY 4499#if EV_MULTIPLICITY
3894 #include "ev_wrap.h" 4500 #include "ev_wrap.h"
3895#endif 4501#endif
3896 4502
3897EV_CPP(})
3898

Diff Legend

– Removed lines
+ Added lines
< Changed lines
> Changed lines