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Comparing libev/ev.c (file contents):
Revision 1.374 by root, Sat Feb 26 15:21:01 2011 UTC vs.
Revision 1.468 by root, Fri Sep 5 16:00:17 2014 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) 2007,2008,2009,2010,2011,2012,2013 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 *
… …
59# endif 59# endif
60# ifndef EV_USE_MONOTONIC 60# ifndef EV_USE_MONOTONIC
61# define EV_USE_MONOTONIC 1 61# define EV_USE_MONOTONIC 1
62# endif 62# endif
63# endif 63# endif
64# elif !defined(EV_USE_CLOCK_SYSCALL) 64# elif !defined EV_USE_CLOCK_SYSCALL
65# define EV_USE_CLOCK_SYSCALL 0 65# define EV_USE_CLOCK_SYSCALL 0
66# endif 66# endif
67 67
68# if HAVE_CLOCK_GETTIME 68# if HAVE_CLOCK_GETTIME
69# ifndef EV_USE_MONOTONIC 69# ifndef EV_USE_MONOTONIC
… …
183# include EV_H 183# include EV_H
184#else 184#else
185# include "ev.h" 185# include "ev.h"
186#endif 186#endif
187 187
188EV_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
189 198
190#ifndef _WIN32 199#ifndef _WIN32
191# include <sys/time.h> 200# include <sys/time.h>
192# include <sys/wait.h> 201# include <sys/wait.h>
193# include <unistd.h> 202# include <unistd.h>
194#else 203#else
195# include <io.h> 204# include <io.h>
196# define WIN32_LEAN_AND_MEAN 205# define WIN32_LEAN_AND_MEAN
206# include <winsock2.h>
197# include <windows.h> 207# include <windows.h>
198# ifndef EV_SELECT_IS_WINSOCKET 208# ifndef EV_SELECT_IS_WINSOCKET
199# define EV_SELECT_IS_WINSOCKET 1 209# define EV_SELECT_IS_WINSOCKET 1
200# endif 210# endif
201# undef EV_AVOID_STDIO 211# undef EV_AVOID_STDIO
… …
210#define _DARWIN_UNLIMITED_SELECT 1 220#define _DARWIN_UNLIMITED_SELECT 1
211 221
212/* this block tries to deduce configuration from header-defined symbols and defaults */ 222/* this block tries to deduce configuration from header-defined symbols and defaults */
213 223
214/* try to deduce the maximum number of signals on this platform */ 224/* try to deduce the maximum number of signals on this platform */
215#if defined (EV_NSIG) 225#if defined EV_NSIG
216/* use what's provided */ 226/* use what's provided */
217#elif defined (NSIG) 227#elif defined NSIG
218# define EV_NSIG (NSIG) 228# define EV_NSIG (NSIG)
219#elif defined(_NSIG) 229#elif defined _NSIG
220# define EV_NSIG (_NSIG) 230# define EV_NSIG (_NSIG)
221#elif defined (SIGMAX) 231#elif defined SIGMAX
222# define EV_NSIG (SIGMAX+1) 232# define EV_NSIG (SIGMAX+1)
223#elif defined (SIG_MAX) 233#elif defined SIG_MAX
224# define EV_NSIG (SIG_MAX+1) 234# define EV_NSIG (SIG_MAX+1)
225#elif defined (_SIG_MAX) 235#elif defined _SIG_MAX
226# define EV_NSIG (_SIG_MAX+1) 236# define EV_NSIG (_SIG_MAX+1)
227#elif defined (MAXSIG) 237#elif defined MAXSIG
228# define EV_NSIG (MAXSIG+1) 238# define EV_NSIG (MAXSIG+1)
229#elif defined (MAX_SIG) 239#elif defined MAX_SIG
230# define EV_NSIG (MAX_SIG+1) 240# define EV_NSIG (MAX_SIG+1)
231#elif defined (SIGARRAYSIZE) 241#elif defined SIGARRAYSIZE
232# define EV_NSIG (SIGARRAYSIZE) /* Assume ary[SIGARRAYSIZE] */ 242# define EV_NSIG (SIGARRAYSIZE) /* Assume ary[SIGARRAYSIZE] */
233#elif defined (_sys_nsig) 243#elif defined _sys_nsig
234# define EV_NSIG (_sys_nsig) /* Solaris 2.5 */ 244# define EV_NSIG (_sys_nsig) /* Solaris 2.5 */
235#else 245#else
236# error "unable to find value for NSIG, please report" 246# define EV_NSIG (8 * sizeof (sigset_t) + 1)
237/* to make it compile regardless, just remove the above line, */
238/* but consider reporting it, too! :) */
239# define EV_NSIG 65
240#endif 247#endif
241 248
242#ifndef EV_USE_FLOOR 249#ifndef EV_USE_FLOOR
243# define EV_USE_FLOOR 0 250# define EV_USE_FLOOR 0
244#endif 251#endif
245 252
246#ifndef EV_USE_CLOCK_SYSCALL 253#ifndef EV_USE_CLOCK_SYSCALL
247# if __linux && __GLIBC__ >= 2 254# if __linux && __GLIBC__ == 2 && __GLIBC_MINOR__ < 17
248# define EV_USE_CLOCK_SYSCALL EV_FEATURE_OS 255# define EV_USE_CLOCK_SYSCALL EV_FEATURE_OS
249# else 256# else
250# define EV_USE_CLOCK_SYSCALL 0 257# define EV_USE_CLOCK_SYSCALL 0
251# endif 258# endif
252#endif 259#endif
253 260
254#ifndef EV_USE_MONOTONIC 261#ifndef EV_USE_MONOTONIC
255# if defined (_POSIX_MONOTONIC_CLOCK) && _POSIX_MONOTONIC_CLOCK >= 0 262# if defined _POSIX_MONOTONIC_CLOCK && _POSIX_MONOTONIC_CLOCK >= 0
256# define EV_USE_MONOTONIC EV_FEATURE_OS 263# define EV_USE_MONOTONIC EV_FEATURE_OS
257# else 264# else
258# define EV_USE_MONOTONIC 0 265# define EV_USE_MONOTONIC 0
259# endif 266# endif
260#endif 267#endif
… …
347 354
348#ifndef EV_HEAP_CACHE_AT 355#ifndef EV_HEAP_CACHE_AT
349# define EV_HEAP_CACHE_AT EV_FEATURE_DATA 356# define EV_HEAP_CACHE_AT EV_FEATURE_DATA
350#endif 357#endif
351 358
359#ifdef ANDROID
360/* supposedly, android doesn't typedef fd_mask */
361# undef EV_USE_SELECT
362# define EV_USE_SELECT 0
363/* supposedly, we need to include syscall.h, not sys/syscall.h, so just disable */
364# undef EV_USE_CLOCK_SYSCALL
365# define EV_USE_CLOCK_SYSCALL 0
366#endif
367
368/* aix's poll.h seems to cause lots of trouble */
369#ifdef _AIX
370/* AIX has a completely broken poll.h header */
371# undef EV_USE_POLL
372# define EV_USE_POLL 0
373#endif
374
352/* on linux, we can use a (slow) syscall to avoid a dependency on pthread, */ 375/* on linux, we can use a (slow) syscall to avoid a dependency on pthread, */
353/* which makes programs even slower. might work on other unices, too. */ 376/* which makes programs even slower. might work on other unices, too. */
354#if EV_USE_CLOCK_SYSCALL 377#if EV_USE_CLOCK_SYSCALL
355# include <syscall.h> 378# include <sys/syscall.h>
356# ifdef SYS_clock_gettime 379# ifdef SYS_clock_gettime
357# define clock_gettime(id, ts) syscall (SYS_clock_gettime, (id), (ts)) 380# define clock_gettime(id, ts) syscall (SYS_clock_gettime, (id), (ts))
358# undef EV_USE_MONOTONIC 381# undef EV_USE_MONOTONIC
359# define EV_USE_MONOTONIC 1 382# define EV_USE_MONOTONIC 1
360# else 383# else
… …
363# endif 386# endif
364#endif 387#endif
365 388
366/* this block fixes any misconfiguration where we know we run into trouble otherwise */ 389/* this block fixes any misconfiguration where we know we run into trouble otherwise */
367 390
368#ifdef _AIX
369/* AIX has a completely broken poll.h header */
370# undef EV_USE_POLL
371# define EV_USE_POLL 0
372#endif
373
374#ifndef CLOCK_MONOTONIC 391#ifndef CLOCK_MONOTONIC
375# undef EV_USE_MONOTONIC 392# undef EV_USE_MONOTONIC
376# define EV_USE_MONOTONIC 0 393# define EV_USE_MONOTONIC 0
377#endif 394#endif
378 395
… …
386# define EV_USE_INOTIFY 0 403# define EV_USE_INOTIFY 0
387#endif 404#endif
388 405
389#if !EV_USE_NANOSLEEP 406#if !EV_USE_NANOSLEEP
390/* hp-ux has it in sys/time.h, which we unconditionally include above */ 407/* hp-ux has it in sys/time.h, which we unconditionally include above */
391# if !defined(_WIN32) && !defined(__hpux) 408# if !defined _WIN32 && !defined __hpux
392# include <sys/select.h> 409# include <sys/select.h>
393# endif 410# endif
394#endif 411#endif
395 412
396#if EV_USE_INOTIFY 413#if EV_USE_INOTIFY
… …
399/* some very old inotify.h headers don't have IN_DONT_FOLLOW */ 416/* some very old inotify.h headers don't have IN_DONT_FOLLOW */
400# ifndef IN_DONT_FOLLOW 417# ifndef IN_DONT_FOLLOW
401# undef EV_USE_INOTIFY 418# undef EV_USE_INOTIFY
402# define EV_USE_INOTIFY 0 419# define EV_USE_INOTIFY 0
403# endif 420# endif
404#endif
405
406#if EV_SELECT_IS_WINSOCKET
407# include <winsock.h>
408#endif 421#endif
409 422
410#if EV_USE_EVENTFD 423#if EV_USE_EVENTFD
411/* our minimum requirement is glibc 2.7 which has the stub, but not the header */ 424/* our minimum requirement is glibc 2.7 which has the stub, but not the header */
412# include <stdint.h> 425# include <stdint.h>
… …
464#define MAX_BLOCKTIME 59.743 /* never wait longer than this time (to detect time jumps) */ 477#define MAX_BLOCKTIME 59.743 /* never wait longer than this time (to detect time jumps) */
465 478
466#define EV_TV_SET(tv,t) do { tv.tv_sec = (long)t; tv.tv_usec = (long)((t - tv.tv_sec) * 1e6); } while (0) 479#define EV_TV_SET(tv,t) do { tv.tv_sec = (long)t; tv.tv_usec = (long)((t - tv.tv_sec) * 1e6); } while (0)
467#define EV_TS_SET(ts,t) do { ts.tv_sec = (long)t; ts.tv_nsec = (long)((t - ts.tv_sec) * 1e9); } while (0) 480#define EV_TS_SET(ts,t) do { ts.tv_sec = (long)t; ts.tv_nsec = (long)((t - ts.tv_sec) * 1e9); } while (0)
468 481
482/* the following is ecb.h embedded into libev - use update_ev_c to update from an external copy */
483/* ECB.H BEGIN */
484/*
485 * libecb - http://software.schmorp.de/pkg/libecb
486 *
487 * Copyright (©) 2009-2014 Marc Alexander Lehmann <libecb@schmorp.de>
488 * Copyright (©) 2011 Emanuele Giaquinta
489 * All rights reserved.
490 *
491 * Redistribution and use in source and binary forms, with or without modifica-
492 * tion, are permitted provided that the following conditions are met:
493 *
494 * 1. Redistributions of source code must retain the above copyright notice,
495 * this list of conditions and the following disclaimer.
496 *
497 * 2. Redistributions in binary form must reproduce the above copyright
498 * notice, this list of conditions and the following disclaimer in the
499 * documentation and/or other materials provided with the distribution.
500 *
501 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR IMPLIED
502 * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MER-
503 * CHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO
504 * EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPE-
505 * CIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
506 * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS;
507 * OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
508 * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTH-
509 * ERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
510 * OF THE POSSIBILITY OF SUCH DAMAGE.
511 *
512 * Alternatively, the contents of this file may be used under the terms of
513 * the GNU General Public License ("GPL") version 2 or any later version,
514 * in which case the provisions of the GPL are applicable instead of
515 * the above. If you wish to allow the use of your version of this file
516 * only under the terms of the GPL and not to allow others to use your
517 * version of this file under the BSD license, indicate your decision
518 * by deleting the provisions above and replace them with the notice
519 * and other provisions required by the GPL. If you do not delete the
520 * provisions above, a recipient may use your version of this file under
521 * either the BSD or the GPL.
522 */
523
524#ifndef ECB_H
525#define ECB_H
526
527/* 16 bits major, 16 bits minor */
528#define ECB_VERSION 0x00010003
529
530#ifdef _WIN32
531 typedef signed char int8_t;
532 typedef unsigned char uint8_t;
533 typedef signed short int16_t;
534 typedef unsigned short uint16_t;
535 typedef signed int int32_t;
536 typedef unsigned int uint32_t;
469#if __GNUC__ >= 4 537 #if __GNUC__
470# define expect(expr,value) __builtin_expect ((expr),(value)) 538 typedef signed long long int64_t;
471# define noinline __attribute__ ((noinline)) 539 typedef unsigned long long uint64_t;
540 #else /* _MSC_VER || __BORLANDC__ */
541 typedef signed __int64 int64_t;
542 typedef unsigned __int64 uint64_t;
543 #endif
544 #ifdef _WIN64
545 #define ECB_PTRSIZE 8
546 typedef uint64_t uintptr_t;
547 typedef int64_t intptr_t;
548 #else
549 #define ECB_PTRSIZE 4
550 typedef uint32_t uintptr_t;
551 typedef int32_t intptr_t;
552 #endif
472#else 553#else
473# define expect(expr,value) (expr) 554 #include <inttypes.h>
474# define noinline 555 #if UINTMAX_MAX > 0xffffffffU
475# if __STDC_VERSION__ < 199901L && __GNUC__ < 2 556 #define ECB_PTRSIZE 8
476# define inline 557 #else
558 #define ECB_PTRSIZE 4
559 #endif
477# endif 560#endif
561
562/* work around x32 idiocy by defining proper macros */
563#if __amd64 || __x86_64 || _M_AMD64 || _M_X64
564 #if _ILP32
565 #define ECB_AMD64_X32 1
566 #else
567 #define ECB_AMD64 1
478#endif 568 #endif
569#endif
479 570
571/* many compilers define _GNUC_ to some versions but then only implement
572 * what their idiot authors think are the "more important" extensions,
573 * causing enormous grief in return for some better fake benchmark numbers.
574 * or so.
575 * we try to detect these and simply assume they are not gcc - if they have
576 * an issue with that they should have done it right in the first place.
577 */
578#ifndef ECB_GCC_VERSION
579 #if !defined __GNUC_MINOR__ || defined __INTEL_COMPILER || defined __SUNPRO_C || defined __SUNPRO_CC || defined __llvm__ || defined __clang__
580 #define ECB_GCC_VERSION(major,minor) 0
581 #else
582 #define ECB_GCC_VERSION(major,minor) (__GNUC__ > (major) || (__GNUC__ == (major) && __GNUC_MINOR__ >= (minor)))
583 #endif
584#endif
585
586#define ECB_CPP (__cplusplus+0)
587#define ECB_CPP11 (__cplusplus >= 201103L)
588
589#if ECB_CPP
590 #define ECB_C 0
591 #define ECB_STDC_VERSION 0
592#else
593 #define ECB_C 1
594 #define ECB_STDC_VERSION __STDC_VERSION__
595#endif
596
597#define ECB_C99 (ECB_STDC_VERSION >= 199901L)
598#define ECB_C11 (ECB_STDC_VERSION >= 201112L)
599
600#if ECB_CPP
601 #define ECB_EXTERN_C extern "C"
602 #define ECB_EXTERN_C_BEG ECB_EXTERN_C {
603 #define ECB_EXTERN_C_END }
604#else
605 #define ECB_EXTERN_C extern
606 #define ECB_EXTERN_C_BEG
607 #define ECB_EXTERN_C_END
608#endif
609
610/*****************************************************************************/
611
612/* ECB_NO_THREADS - ecb is not used by multiple threads, ever */
613/* ECB_NO_SMP - ecb might be used in multiple threads, but only on a single cpu */
614
615#if ECB_NO_THREADS
616 #define ECB_NO_SMP 1
617#endif
618
619#if ECB_NO_SMP
620 #define ECB_MEMORY_FENCE do { } while (0)
621#endif
622
623#ifndef ECB_MEMORY_FENCE
624 #if ECB_GCC_VERSION(2,5) || defined __INTEL_COMPILER || (__llvm__ && __GNUC__) || __SUNPRO_C >= 0x5110 || __SUNPRO_CC >= 0x5110
625 #if __i386 || __i386__
626 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("lock; orb $0, -1(%%esp)" : : : "memory")
627 #define ECB_MEMORY_FENCE_ACQUIRE __asm__ __volatile__ ("" : : : "memory")
628 #define ECB_MEMORY_FENCE_RELEASE __asm__ __volatile__ ("")
629 #elif __amd64 || __amd64__ || __x86_64 || __x86_64__
630 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("mfence" : : : "memory")
631 #define ECB_MEMORY_FENCE_ACQUIRE __asm__ __volatile__ ("" : : : "memory")
632 #define ECB_MEMORY_FENCE_RELEASE __asm__ __volatile__ ("")
633 #elif __powerpc__ || __ppc__ || __powerpc64__ || __ppc64__
634 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("sync" : : : "memory")
635 #elif defined __ARM_ARCH_6__ || defined __ARM_ARCH_6J__ \
636 || defined __ARM_ARCH_6K__ || defined __ARM_ARCH_6ZK__
637 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("mcr p15,0,%0,c7,c10,5" : : "r" (0) : "memory")
638 #elif defined __ARM_ARCH_7__ || defined __ARM_ARCH_7A__ \
639 || defined __ARM_ARCH_7M__ || defined __ARM_ARCH_7R__
640 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("dmb" : : : "memory")
641 #elif __aarch64__
642 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("dmb ish" : : : "memory")
643 #elif (__sparc || __sparc__) && !__sparcv8
644 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("membar #LoadStore | #LoadLoad | #StoreStore | #StoreLoad" : : : "memory")
645 #define ECB_MEMORY_FENCE_ACQUIRE __asm__ __volatile__ ("membar #LoadStore | #LoadLoad" : : : "memory")
646 #define ECB_MEMORY_FENCE_RELEASE __asm__ __volatile__ ("membar #LoadStore | #StoreStore")
647 #elif defined __s390__ || defined __s390x__
648 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("bcr 15,0" : : : "memory")
649 #elif defined __mips__
650 /* GNU/Linux emulates sync on mips1 architectures, so we force its use */
651 /* anybody else who still uses mips1 is supposed to send in their version, with detection code. */
652 #define ECB_MEMORY_FENCE __asm__ __volatile__ (".set mips2; sync; .set mips0" : : : "memory")
653 #elif defined __alpha__
654 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("mb" : : : "memory")
655 #elif defined __hppa__
656 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("" : : : "memory")
657 #define ECB_MEMORY_FENCE_RELEASE __asm__ __volatile__ ("")
658 #elif defined __ia64__
659 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("mf" : : : "memory")
660 #elif defined __m68k__
661 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("" : : : "memory")
662 #elif defined __m88k__
663 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("tb1 0,%%r0,128" : : : "memory")
664 #elif defined __sh__
665 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("" : : : "memory")
666 #endif
667 #endif
668#endif
669
670#ifndef ECB_MEMORY_FENCE
671 #if ECB_GCC_VERSION(4,7)
672 /* see comment below (stdatomic.h) about the C11 memory model. */
673 #define ECB_MEMORY_FENCE __atomic_thread_fence (__ATOMIC_SEQ_CST)
674 #define ECB_MEMORY_FENCE_ACQUIRE __atomic_thread_fence (__ATOMIC_ACQUIRE)
675 #define ECB_MEMORY_FENCE_RELEASE __atomic_thread_fence (__ATOMIC_RELEASE)
676
677 /* The __has_feature syntax from clang is so misdesigned that we cannot use it
678 * without risking compile time errors with other compilers. We *could*
679 * define our own ecb_clang_has_feature, but I just can't be bothered to work
680 * around this shit time and again.
681 * #elif defined __clang && __has_feature (cxx_atomic)
682 * // see comment below (stdatomic.h) about the C11 memory model.
683 * #define ECB_MEMORY_FENCE __c11_atomic_thread_fence (__ATOMIC_SEQ_CST)
684 * #define ECB_MEMORY_FENCE_ACQUIRE __c11_atomic_thread_fence (__ATOMIC_ACQUIRE)
685 * #define ECB_MEMORY_FENCE_RELEASE __c11_atomic_thread_fence (__ATOMIC_RELEASE)
686 */
687
688 #elif ECB_GCC_VERSION(4,4) || defined __INTEL_COMPILER || defined __clang__
689 #define ECB_MEMORY_FENCE __sync_synchronize ()
690 #elif _MSC_VER >= 1500 /* VC++ 2008 */
691 /* apparently, microsoft broke all the memory barrier stuff in Visual Studio 2008... */
692 #pragma intrinsic(_ReadBarrier,_WriteBarrier,_ReadWriteBarrier)
693 #define ECB_MEMORY_FENCE _ReadWriteBarrier (); MemoryBarrier()
694 #define ECB_MEMORY_FENCE_ACQUIRE _ReadWriteBarrier (); MemoryBarrier() /* according to msdn, _ReadBarrier is not a load fence */
695 #define ECB_MEMORY_FENCE_RELEASE _WriteBarrier (); MemoryBarrier()
696 #elif _MSC_VER >= 1400 /* VC++ 2005 */
697 #pragma intrinsic(_ReadBarrier,_WriteBarrier,_ReadWriteBarrier)
698 #define ECB_MEMORY_FENCE _ReadWriteBarrier ()
699 #define ECB_MEMORY_FENCE_ACQUIRE _ReadWriteBarrier () /* according to msdn, _ReadBarrier is not a load fence */
700 #define ECB_MEMORY_FENCE_RELEASE _WriteBarrier ()
701 #elif defined _WIN32
702 #include <WinNT.h>
703 #define ECB_MEMORY_FENCE MemoryBarrier () /* actually just xchg on x86... scary */
704 #elif __SUNPRO_C >= 0x5110 || __SUNPRO_CC >= 0x5110
705 #include <mbarrier.h>
706 #define ECB_MEMORY_FENCE __machine_rw_barrier ()
707 #define ECB_MEMORY_FENCE_ACQUIRE __machine_r_barrier ()
708 #define ECB_MEMORY_FENCE_RELEASE __machine_w_barrier ()
709 #elif __xlC__
710 #define ECB_MEMORY_FENCE __sync ()
711 #endif
712#endif
713
714#ifndef ECB_MEMORY_FENCE
715 #if ECB_C11 && !defined __STDC_NO_ATOMICS__
716 /* we assume that these memory fences work on all variables/all memory accesses, */
717 /* not just C11 atomics and atomic accesses */
718 #include <stdatomic.h>
719 /* Unfortunately, neither gcc 4.7 nor clang 3.1 generate any instructions for */
720 /* any fence other than seq_cst, which isn't very efficient for us. */
721 /* Why that is, we don't know - either the C11 memory model is quite useless */
722 /* for most usages, or gcc and clang have a bug */
723 /* I *currently* lean towards the latter, and inefficiently implement */
724 /* all three of ecb's fences as a seq_cst fence */
725 /* Update, gcc-4.8 generates mfence for all c++ fences, but nothing */
726 /* for all __atomic_thread_fence's except seq_cst */
727 #define ECB_MEMORY_FENCE atomic_thread_fence (memory_order_seq_cst)
728 #endif
729#endif
730
731#ifndef ECB_MEMORY_FENCE
732 #if !ECB_AVOID_PTHREADS
733 /*
734 * if you get undefined symbol references to pthread_mutex_lock,
735 * or failure to find pthread.h, then you should implement
736 * the ECB_MEMORY_FENCE operations for your cpu/compiler
737 * OR provide pthread.h and link against the posix thread library
738 * of your system.
739 */
740 #include <pthread.h>
741 #define ECB_NEEDS_PTHREADS 1
742 #define ECB_MEMORY_FENCE_NEEDS_PTHREADS 1
743
744 static pthread_mutex_t ecb_mf_lock = PTHREAD_MUTEX_INITIALIZER;
745 #define ECB_MEMORY_FENCE do { pthread_mutex_lock (&ecb_mf_lock); pthread_mutex_unlock (&ecb_mf_lock); } while (0)
746 #endif
747#endif
748
749#if !defined ECB_MEMORY_FENCE_ACQUIRE && defined ECB_MEMORY_FENCE
750 #define ECB_MEMORY_FENCE_ACQUIRE ECB_MEMORY_FENCE
751#endif
752
753#if !defined ECB_MEMORY_FENCE_RELEASE && defined ECB_MEMORY_FENCE
754 #define ECB_MEMORY_FENCE_RELEASE ECB_MEMORY_FENCE
755#endif
756
757/*****************************************************************************/
758
759#if __cplusplus
760 #define ecb_inline static inline
761#elif ECB_GCC_VERSION(2,5)
762 #define ecb_inline static __inline__
763#elif ECB_C99
764 #define ecb_inline static inline
765#else
766 #define ecb_inline static
767#endif
768
769#if ECB_GCC_VERSION(3,3)
770 #define ecb_restrict __restrict__
771#elif ECB_C99
772 #define ecb_restrict restrict
773#else
774 #define ecb_restrict
775#endif
776
777typedef int ecb_bool;
778
779#define ECB_CONCAT_(a, b) a ## b
780#define ECB_CONCAT(a, b) ECB_CONCAT_(a, b)
781#define ECB_STRINGIFY_(a) # a
782#define ECB_STRINGIFY(a) ECB_STRINGIFY_(a)
783
784#define ecb_function_ ecb_inline
785
786#if ECB_GCC_VERSION(3,1)
787 #define ecb_attribute(attrlist) __attribute__(attrlist)
788 #define ecb_is_constant(expr) __builtin_constant_p (expr)
789 #define ecb_expect(expr,value) __builtin_expect ((expr),(value))
790 #define ecb_prefetch(addr,rw,locality) __builtin_prefetch (addr, rw, locality)
791#else
792 #define ecb_attribute(attrlist)
793
794 /* possible C11 impl for integral types
795 typedef struct ecb_is_constant_struct ecb_is_constant_struct;
796 #define ecb_is_constant(expr) _Generic ((1 ? (struct ecb_is_constant_struct *)0 : (void *)((expr) - (expr)), ecb_is_constant_struct *: 0, default: 1)) */
797
798 #define ecb_is_constant(expr) 0
799 #define ecb_expect(expr,value) (expr)
800 #define ecb_prefetch(addr,rw,locality)
801#endif
802
803/* no emulation for ecb_decltype */
804#if ECB_GCC_VERSION(4,5)
805 #define ecb_decltype(x) __decltype(x)
806#elif ECB_GCC_VERSION(3,0)
807 #define ecb_decltype(x) __typeof(x)
808#endif
809
810#if _MSC_VER >= 1300
811 #define ecb_deprecated __declspec(deprecated)
812#else
813 #define ecb_deprecated ecb_attribute ((__deprecated__))
814#endif
815
816#define ecb_noinline ecb_attribute ((__noinline__))
817#define ecb_unused ecb_attribute ((__unused__))
818#define ecb_const ecb_attribute ((__const__))
819#define ecb_pure ecb_attribute ((__pure__))
820
821/* http://msdn.microsoft.com/en-us/library/k6ktzx3s.aspx __declspec(noreturn) */
822#if ECB_C11
823 #define ecb_noreturn _Noreturn
824#else
825 #define ecb_noreturn ecb_attribute ((__noreturn__))
826#endif
827
828#if ECB_GCC_VERSION(4,3)
829 #define ecb_artificial ecb_attribute ((__artificial__))
830 #define ecb_hot ecb_attribute ((__hot__))
831 #define ecb_cold ecb_attribute ((__cold__))
832#else
833 #define ecb_artificial
834 #define ecb_hot
835 #define ecb_cold
836#endif
837
838/* put around conditional expressions if you are very sure that the */
839/* expression is mostly true or mostly false. note that these return */
840/* booleans, not the expression. */
480#define expect_false(expr) expect ((expr) != 0, 0) 841#define ecb_expect_false(expr) ecb_expect (!!(expr), 0)
481#define expect_true(expr) expect ((expr) != 0, 1) 842#define ecb_expect_true(expr) ecb_expect (!!(expr), 1)
843/* for compatibility to the rest of the world */
844#define ecb_likely(expr) ecb_expect_true (expr)
845#define ecb_unlikely(expr) ecb_expect_false (expr)
846
847/* count trailing zero bits and count # of one bits */
848#if ECB_GCC_VERSION(3,4)
849 /* we assume int == 32 bit, long == 32 or 64 bit and long long == 64 bit */
850 #define ecb_ld32(x) (__builtin_clz (x) ^ 31)
851 #define ecb_ld64(x) (__builtin_clzll (x) ^ 63)
852 #define ecb_ctz32(x) __builtin_ctz (x)
853 #define ecb_ctz64(x) __builtin_ctzll (x)
854 #define ecb_popcount32(x) __builtin_popcount (x)
855 /* no popcountll */
856#else
857 ecb_function_ int ecb_ctz32 (uint32_t x) ecb_const;
858 ecb_function_ int
859 ecb_ctz32 (uint32_t x)
860 {
861 int r = 0;
862
863 x &= ~x + 1; /* this isolates the lowest bit */
864
865#if ECB_branchless_on_i386
866 r += !!(x & 0xaaaaaaaa) << 0;
867 r += !!(x & 0xcccccccc) << 1;
868 r += !!(x & 0xf0f0f0f0) << 2;
869 r += !!(x & 0xff00ff00) << 3;
870 r += !!(x & 0xffff0000) << 4;
871#else
872 if (x & 0xaaaaaaaa) r += 1;
873 if (x & 0xcccccccc) r += 2;
874 if (x & 0xf0f0f0f0) r += 4;
875 if (x & 0xff00ff00) r += 8;
876 if (x & 0xffff0000) r += 16;
877#endif
878
879 return r;
880 }
881
882 ecb_function_ int ecb_ctz64 (uint64_t x) ecb_const;
883 ecb_function_ int
884 ecb_ctz64 (uint64_t x)
885 {
886 int shift = x & 0xffffffffU ? 0 : 32;
887 return ecb_ctz32 (x >> shift) + shift;
888 }
889
890 ecb_function_ int ecb_popcount32 (uint32_t x) ecb_const;
891 ecb_function_ int
892 ecb_popcount32 (uint32_t x)
893 {
894 x -= (x >> 1) & 0x55555555;
895 x = ((x >> 2) & 0x33333333) + (x & 0x33333333);
896 x = ((x >> 4) + x) & 0x0f0f0f0f;
897 x *= 0x01010101;
898
899 return x >> 24;
900 }
901
902 ecb_function_ int ecb_ld32 (uint32_t x) ecb_const;
903 ecb_function_ int ecb_ld32 (uint32_t x)
904 {
905 int r = 0;
906
907 if (x >> 16) { x >>= 16; r += 16; }
908 if (x >> 8) { x >>= 8; r += 8; }
909 if (x >> 4) { x >>= 4; r += 4; }
910 if (x >> 2) { x >>= 2; r += 2; }
911 if (x >> 1) { r += 1; }
912
913 return r;
914 }
915
916 ecb_function_ int ecb_ld64 (uint64_t x) ecb_const;
917 ecb_function_ int ecb_ld64 (uint64_t x)
918 {
919 int r = 0;
920
921 if (x >> 32) { x >>= 32; r += 32; }
922
923 return r + ecb_ld32 (x);
924 }
925#endif
926
927ecb_function_ ecb_bool ecb_is_pot32 (uint32_t x) ecb_const;
928ecb_function_ ecb_bool ecb_is_pot32 (uint32_t x) { return !(x & (x - 1)); }
929ecb_function_ ecb_bool ecb_is_pot64 (uint64_t x) ecb_const;
930ecb_function_ ecb_bool ecb_is_pot64 (uint64_t x) { return !(x & (x - 1)); }
931
932ecb_function_ uint8_t ecb_bitrev8 (uint8_t x) ecb_const;
933ecb_function_ uint8_t ecb_bitrev8 (uint8_t x)
934{
935 return ( (x * 0x0802U & 0x22110U)
936 | (x * 0x8020U & 0x88440U)) * 0x10101U >> 16;
937}
938
939ecb_function_ uint16_t ecb_bitrev16 (uint16_t x) ecb_const;
940ecb_function_ uint16_t ecb_bitrev16 (uint16_t x)
941{
942 x = ((x >> 1) & 0x5555) | ((x & 0x5555) << 1);
943 x = ((x >> 2) & 0x3333) | ((x & 0x3333) << 2);
944 x = ((x >> 4) & 0x0f0f) | ((x & 0x0f0f) << 4);
945 x = ( x >> 8 ) | ( x << 8);
946
947 return x;
948}
949
950ecb_function_ uint32_t ecb_bitrev32 (uint32_t x) ecb_const;
951ecb_function_ uint32_t ecb_bitrev32 (uint32_t x)
952{
953 x = ((x >> 1) & 0x55555555) | ((x & 0x55555555) << 1);
954 x = ((x >> 2) & 0x33333333) | ((x & 0x33333333) << 2);
955 x = ((x >> 4) & 0x0f0f0f0f) | ((x & 0x0f0f0f0f) << 4);
956 x = ((x >> 8) & 0x00ff00ff) | ((x & 0x00ff00ff) << 8);
957 x = ( x >> 16 ) | ( x << 16);
958
959 return x;
960}
961
962/* popcount64 is only available on 64 bit cpus as gcc builtin */
963/* so for this version we are lazy */
964ecb_function_ int ecb_popcount64 (uint64_t x) ecb_const;
965ecb_function_ int
966ecb_popcount64 (uint64_t x)
967{
968 return ecb_popcount32 (x) + ecb_popcount32 (x >> 32);
969}
970
971ecb_inline uint8_t ecb_rotl8 (uint8_t x, unsigned int count) ecb_const;
972ecb_inline uint8_t ecb_rotr8 (uint8_t x, unsigned int count) ecb_const;
973ecb_inline uint16_t ecb_rotl16 (uint16_t x, unsigned int count) ecb_const;
974ecb_inline uint16_t ecb_rotr16 (uint16_t x, unsigned int count) ecb_const;
975ecb_inline uint32_t ecb_rotl32 (uint32_t x, unsigned int count) ecb_const;
976ecb_inline uint32_t ecb_rotr32 (uint32_t x, unsigned int count) ecb_const;
977ecb_inline uint64_t ecb_rotl64 (uint64_t x, unsigned int count) ecb_const;
978ecb_inline uint64_t ecb_rotr64 (uint64_t x, unsigned int count) ecb_const;
979
980ecb_inline uint8_t ecb_rotl8 (uint8_t x, unsigned int count) { return (x >> ( 8 - count)) | (x << count); }
981ecb_inline uint8_t ecb_rotr8 (uint8_t x, unsigned int count) { return (x << ( 8 - count)) | (x >> count); }
982ecb_inline uint16_t ecb_rotl16 (uint16_t x, unsigned int count) { return (x >> (16 - count)) | (x << count); }
983ecb_inline uint16_t ecb_rotr16 (uint16_t x, unsigned int count) { return (x << (16 - count)) | (x >> count); }
984ecb_inline uint32_t ecb_rotl32 (uint32_t x, unsigned int count) { return (x >> (32 - count)) | (x << count); }
985ecb_inline uint32_t ecb_rotr32 (uint32_t x, unsigned int count) { return (x << (32 - count)) | (x >> count); }
986ecb_inline uint64_t ecb_rotl64 (uint64_t x, unsigned int count) { return (x >> (64 - count)) | (x << count); }
987ecb_inline uint64_t ecb_rotr64 (uint64_t x, unsigned int count) { return (x << (64 - count)) | (x >> count); }
988
989#if ECB_GCC_VERSION(4,3)
990 #define ecb_bswap16(x) (__builtin_bswap32 (x) >> 16)
991 #define ecb_bswap32(x) __builtin_bswap32 (x)
992 #define ecb_bswap64(x) __builtin_bswap64 (x)
993#else
994 ecb_function_ uint16_t ecb_bswap16 (uint16_t x) ecb_const;
995 ecb_function_ uint16_t
996 ecb_bswap16 (uint16_t x)
997 {
998 return ecb_rotl16 (x, 8);
999 }
1000
1001 ecb_function_ uint32_t ecb_bswap32 (uint32_t x) ecb_const;
1002 ecb_function_ uint32_t
1003 ecb_bswap32 (uint32_t x)
1004 {
1005 return (((uint32_t)ecb_bswap16 (x)) << 16) | ecb_bswap16 (x >> 16);
1006 }
1007
1008 ecb_function_ uint64_t ecb_bswap64 (uint64_t x) ecb_const;
1009 ecb_function_ uint64_t
1010 ecb_bswap64 (uint64_t x)
1011 {
1012 return (((uint64_t)ecb_bswap32 (x)) << 32) | ecb_bswap32 (x >> 32);
1013 }
1014#endif
1015
1016#if ECB_GCC_VERSION(4,5)
1017 #define ecb_unreachable() __builtin_unreachable ()
1018#else
1019 /* this seems to work fine, but gcc always emits a warning for it :/ */
1020 ecb_inline void ecb_unreachable (void) ecb_noreturn;
1021 ecb_inline void ecb_unreachable (void) { }
1022#endif
1023
1024/* try to tell the compiler that some condition is definitely true */
1025#define ecb_assume(cond) if (!(cond)) ecb_unreachable (); else 0
1026
1027ecb_inline unsigned char ecb_byteorder_helper (void) ecb_const;
1028ecb_inline unsigned char
1029ecb_byteorder_helper (void)
1030{
1031 /* the union code still generates code under pressure in gcc, */
1032 /* but less than using pointers, and always seems to */
1033 /* successfully return a constant. */
1034 /* the reason why we have this horrible preprocessor mess */
1035 /* is to avoid it in all cases, at least on common architectures */
1036 /* or when using a recent enough gcc version (>= 4.6) */
1037#if __i386 || __i386__ || _M_X86 || __amd64 || __amd64__ || _M_X64
1038 return 0x44;
1039#elif __BYTE_ORDER__ && __BYTE_ORDER__ == __ORDER_LITTLE_ENDIAN__
1040 return 0x44;
1041#elif __BYTE_ORDER__ && __BYTE_ORDER__ == __ORDER_BIG_ENDIAN__
1042 return 0x11;
1043#else
1044 union
1045 {
1046 uint32_t i;
1047 uint8_t c;
1048 } u = { 0x11223344 };
1049 return u.c;
1050#endif
1051}
1052
1053ecb_inline ecb_bool ecb_big_endian (void) ecb_const;
1054ecb_inline ecb_bool ecb_big_endian (void) { return ecb_byteorder_helper () == 0x11; }
1055ecb_inline ecb_bool ecb_little_endian (void) ecb_const;
1056ecb_inline ecb_bool ecb_little_endian (void) { return ecb_byteorder_helper () == 0x44; }
1057
1058#if ECB_GCC_VERSION(3,0) || ECB_C99
1059 #define ecb_mod(m,n) ((m) % (n) + ((m) % (n) < 0 ? (n) : 0))
1060#else
1061 #define ecb_mod(m,n) ((m) < 0 ? ((n) - 1 - ((-1 - (m)) % (n))) : ((m) % (n)))
1062#endif
1063
1064#if __cplusplus
1065 template<typename T>
1066 static inline T ecb_div_rd (T val, T div)
1067 {
1068 return val < 0 ? - ((-val + div - 1) / div) : (val ) / div;
1069 }
1070 template<typename T>
1071 static inline T ecb_div_ru (T val, T div)
1072 {
1073 return val < 0 ? - ((-val ) / div) : (val + div - 1) / div;
1074 }
1075#else
1076 #define ecb_div_rd(val,div) ((val) < 0 ? - ((-(val) + (div) - 1) / (div)) : ((val) ) / (div))
1077 #define ecb_div_ru(val,div) ((val) < 0 ? - ((-(val) ) / (div)) : ((val) + (div) - 1) / (div))
1078#endif
1079
1080#if ecb_cplusplus_does_not_suck
1081 /* does not work for local types (http://www.open-std.org/jtc1/sc22/wg21/docs/papers/2008/n2657.htm) */
1082 template<typename T, int N>
1083 static inline int ecb_array_length (const T (&arr)[N])
1084 {
1085 return N;
1086 }
1087#else
1088 #define ecb_array_length(name) (sizeof (name) / sizeof (name [0]))
1089#endif
1090
1091/*******************************************************************************/
1092/* floating point stuff, can be disabled by defining ECB_NO_LIBM */
1093
1094/* basically, everything uses "ieee pure-endian" floating point numbers */
1095/* the only noteworthy exception is ancient armle, which uses order 43218765 */
1096#if 0 \
1097 || __i386 || __i386__ \
1098 || __amd64 || __amd64__ || __x86_64 || __x86_64__ \
1099 || __powerpc__ || __ppc__ || __powerpc64__ || __ppc64__ \
1100 || defined __s390__ || defined __s390x__ \
1101 || defined __mips__ \
1102 || defined __alpha__ \
1103 || defined __hppa__ \
1104 || defined __ia64__ \
1105 || defined __m68k__ \
1106 || defined __m88k__ \
1107 || defined __sh__ \
1108 || defined _M_IX86 || defined _M_AMD64 || defined _M_IA64 \
1109 || (defined __arm__ && (defined __ARM_EABI__ || defined __EABI__ || defined __VFP_FP__ || defined _WIN32_WCE || defined __ANDROID__)) \
1110 || defined __aarch64__
1111 #define ECB_STDFP 1
1112 #include <string.h> /* for memcpy */
1113#else
1114 #define ECB_STDFP 0
1115#endif
1116
1117#ifndef ECB_NO_LIBM
1118
1119 #include <math.h> /* for frexp*, ldexp*, INFINITY, NAN */
1120
1121 /* only the oldest of old doesn't have this one. solaris. */
1122 #ifdef INFINITY
1123 #define ECB_INFINITY INFINITY
1124 #else
1125 #define ECB_INFINITY HUGE_VAL
1126 #endif
1127
1128 #ifdef NAN
1129 #define ECB_NAN NAN
1130 #else
1131 #define ECB_NAN ECB_INFINITY
1132 #endif
1133
1134 /* converts an ieee half/binary16 to a float */
1135 ecb_function_ float ecb_binary16_to_float (uint16_t x) ecb_const;
1136 ecb_function_ float
1137 ecb_binary16_to_float (uint16_t x)
1138 {
1139 int e = (x >> 10) & 0x1f;
1140 int m = x & 0x3ff;
1141 float r;
1142
1143 if (!e ) r = ldexpf (m , -24);
1144 else if (e != 31) r = ldexpf (m + 0x400, e - 25);
1145 else if (m ) r = ECB_NAN;
1146 else r = ECB_INFINITY;
1147
1148 return x & 0x8000 ? -r : r;
1149 }
1150
1151 /* convert a float to ieee single/binary32 */
1152 ecb_function_ uint32_t ecb_float_to_binary32 (float x) ecb_const;
1153 ecb_function_ uint32_t
1154 ecb_float_to_binary32 (float x)
1155 {
1156 uint32_t r;
1157
1158 #if ECB_STDFP
1159 memcpy (&r, &x, 4);
1160 #else
1161 /* slow emulation, works for anything but -0 */
1162 uint32_t m;
1163 int e;
1164
1165 if (x == 0e0f ) return 0x00000000U;
1166 if (x > +3.40282346638528860e+38f) return 0x7f800000U;
1167 if (x < -3.40282346638528860e+38f) return 0xff800000U;
1168 if (x != x ) return 0x7fbfffffU;
1169
1170 m = frexpf (x, &e) * 0x1000000U;
1171
1172 r = m & 0x80000000U;
1173
1174 if (r)
1175 m = -m;
1176
1177 if (e <= -126)
1178 {
1179 m &= 0xffffffU;
1180 m >>= (-125 - e);
1181 e = -126;
1182 }
1183
1184 r |= (e + 126) << 23;
1185 r |= m & 0x7fffffU;
1186 #endif
1187
1188 return r;
1189 }
1190
1191 /* converts an ieee single/binary32 to a float */
1192 ecb_function_ float ecb_binary32_to_float (uint32_t x) ecb_const;
1193 ecb_function_ float
1194 ecb_binary32_to_float (uint32_t x)
1195 {
1196 float r;
1197
1198 #if ECB_STDFP
1199 memcpy (&r, &x, 4);
1200 #else
1201 /* emulation, only works for normals and subnormals and +0 */
1202 int neg = x >> 31;
1203 int e = (x >> 23) & 0xffU;
1204
1205 x &= 0x7fffffU;
1206
1207 if (e)
1208 x |= 0x800000U;
1209 else
1210 e = 1;
1211
1212 /* we distrust ldexpf a bit and do the 2**-24 scaling by an extra multiply */
1213 r = ldexpf (x * (0.5f / 0x800000U), e - 126);
1214
1215 r = neg ? -r : r;
1216 #endif
1217
1218 return r;
1219 }
1220
1221 /* convert a double to ieee double/binary64 */
1222 ecb_function_ uint64_t ecb_double_to_binary64 (double x) ecb_const;
1223 ecb_function_ uint64_t
1224 ecb_double_to_binary64 (double x)
1225 {
1226 uint64_t r;
1227
1228 #if ECB_STDFP
1229 memcpy (&r, &x, 8);
1230 #else
1231 /* slow emulation, works for anything but -0 */
1232 uint64_t m;
1233 int e;
1234
1235 if (x == 0e0 ) return 0x0000000000000000U;
1236 if (x > +1.79769313486231470e+308) return 0x7ff0000000000000U;
1237 if (x < -1.79769313486231470e+308) return 0xfff0000000000000U;
1238 if (x != x ) return 0X7ff7ffffffffffffU;
1239
1240 m = frexp (x, &e) * 0x20000000000000U;
1241
1242 r = m & 0x8000000000000000;;
1243
1244 if (r)
1245 m = -m;
1246
1247 if (e <= -1022)
1248 {
1249 m &= 0x1fffffffffffffU;
1250 m >>= (-1021 - e);
1251 e = -1022;
1252 }
1253
1254 r |= ((uint64_t)(e + 1022)) << 52;
1255 r |= m & 0xfffffffffffffU;
1256 #endif
1257
1258 return r;
1259 }
1260
1261 /* converts an ieee double/binary64 to a double */
1262 ecb_function_ double ecb_binary64_to_double (uint64_t x) ecb_const;
1263 ecb_function_ double
1264 ecb_binary64_to_double (uint64_t x)
1265 {
1266 double r;
1267
1268 #if ECB_STDFP
1269 memcpy (&r, &x, 8);
1270 #else
1271 /* emulation, only works for normals and subnormals and +0 */
1272 int neg = x >> 63;
1273 int e = (x >> 52) & 0x7ffU;
1274
1275 x &= 0xfffffffffffffU;
1276
1277 if (e)
1278 x |= 0x10000000000000U;
1279 else
1280 e = 1;
1281
1282 /* we distrust ldexp a bit and do the 2**-53 scaling by an extra multiply */
1283 r = ldexp (x * (0.5 / 0x10000000000000U), e - 1022);
1284
1285 r = neg ? -r : r;
1286 #endif
1287
1288 return r;
1289 }
1290
1291#endif
1292
1293#endif
1294
1295/* ECB.H END */
1296
1297#if ECB_MEMORY_FENCE_NEEDS_PTHREADS
1298/* if your architecture doesn't need memory fences, e.g. because it is
1299 * single-cpu/core, or if you use libev in a project that doesn't use libev
1300 * from multiple threads, then you can define ECB_AVOID_PTHREADS when compiling
1301 * libev, in which cases the memory fences become nops.
1302 * alternatively, you can remove this #error and link against libpthread,
1303 * which will then provide the memory fences.
1304 */
1305# error "memory fences not defined for your architecture, please report"
1306#endif
1307
1308#ifndef ECB_MEMORY_FENCE
1309# define ECB_MEMORY_FENCE do { } while (0)
1310# define ECB_MEMORY_FENCE_ACQUIRE ECB_MEMORY_FENCE
1311# define ECB_MEMORY_FENCE_RELEASE ECB_MEMORY_FENCE
1312#endif
1313
1314#define expect_false(cond) ecb_expect_false (cond)
1315#define expect_true(cond) ecb_expect_true (cond)
1316#define noinline ecb_noinline
1317
482#define inline_size static inline 1318#define inline_size ecb_inline
483 1319
484#if EV_FEATURE_CODE 1320#if EV_FEATURE_CODE
485# define inline_speed static inline 1321# define inline_speed ecb_inline
486#else 1322#else
487# define inline_speed static noinline 1323# define inline_speed static noinline
488#endif 1324#endif
489 1325
490#define NUMPRI (EV_MAXPRI - EV_MINPRI + 1) 1326#define NUMPRI (EV_MAXPRI - EV_MINPRI + 1)
… …
581 1417
582#ifdef __linux 1418#ifdef __linux
583# include <sys/utsname.h> 1419# include <sys/utsname.h>
584#endif 1420#endif
585 1421
586static unsigned int noinline 1422static unsigned int noinline ecb_cold
587ev_linux_version (void) 1423ev_linux_version (void)
588{ 1424{
589#ifdef __linux 1425#ifdef __linux
590 unsigned int v = 0; 1426 unsigned int v = 0;
591 struct utsname buf; 1427 struct utsname buf;
… …
620} 1456}
621 1457
622/*****************************************************************************/ 1458/*****************************************************************************/
623 1459
624#if EV_AVOID_STDIO 1460#if EV_AVOID_STDIO
625static void noinline 1461static void noinline ecb_cold
626ev_printerr (const char *msg) 1462ev_printerr (const char *msg)
627{ 1463{
628 write (STDERR_FILENO, msg, strlen (msg)); 1464 write (STDERR_FILENO, msg, strlen (msg));
629} 1465}
630#endif 1466#endif
631 1467
632static void (*syserr_cb)(const char *msg); 1468static void (*syserr_cb)(const char *msg) EV_THROW;
633 1469
634void 1470void ecb_cold
635ev_set_syserr_cb (void (*cb)(const char *msg)) 1471ev_set_syserr_cb (void (*cb)(const char *msg) EV_THROW) EV_THROW
636{ 1472{
637 syserr_cb = cb; 1473 syserr_cb = cb;
638} 1474}
639 1475
640static void noinline 1476static void noinline ecb_cold
641ev_syserr (const char *msg) 1477ev_syserr (const char *msg)
642{ 1478{
643 if (!msg) 1479 if (!msg)
644 msg = "(libev) system error"; 1480 msg = "(libev) system error";
645 1481
… …
658 abort (); 1494 abort ();
659 } 1495 }
660} 1496}
661 1497
662static void * 1498static void *
663ev_realloc_emul (void *ptr, long size) 1499ev_realloc_emul (void *ptr, long size) EV_THROW
664{ 1500{
665#if __GLIBC__
666 return realloc (ptr, size);
667#else
668 /* some systems, notably openbsd and darwin, fail to properly 1501 /* some systems, notably openbsd and darwin, fail to properly
669 * implement realloc (x, 0) (as required by both ansi c-89 and 1502 * implement realloc (x, 0) (as required by both ansi c-89 and
670 * the single unix specification, so work around them here. 1503 * the single unix specification, so work around them here.
1504 * recently, also (at least) fedora and debian started breaking it,
1505 * despite documenting it otherwise.
671 */ 1506 */
672 1507
673 if (size) 1508 if (size)
674 return realloc (ptr, size); 1509 return realloc (ptr, size);
675 1510
676 free (ptr); 1511 free (ptr);
677 return 0; 1512 return 0;
678#endif
679} 1513}
680 1514
681static void *(*alloc)(void *ptr, long size) = ev_realloc_emul; 1515static void *(*alloc)(void *ptr, long size) EV_THROW = ev_realloc_emul;
682 1516
683void 1517void ecb_cold
684ev_set_allocator (void *(*cb)(void *ptr, long size)) 1518ev_set_allocator (void *(*cb)(void *ptr, long size) EV_THROW) EV_THROW
685{ 1519{
686 alloc = cb; 1520 alloc = cb;
687} 1521}
688 1522
689inline_speed void * 1523inline_speed void *
… …
777 #undef VAR 1611 #undef VAR
778 }; 1612 };
779 #include "ev_wrap.h" 1613 #include "ev_wrap.h"
780 1614
781 static struct ev_loop default_loop_struct; 1615 static struct ev_loop default_loop_struct;
782 struct ev_loop *ev_default_loop_ptr; 1616 EV_API_DECL struct ev_loop *ev_default_loop_ptr = 0; /* needs to be initialised to make it a definition despite extern */
783 1617
784#else 1618#else
785 1619
786 ev_tstamp ev_rt_now; 1620 EV_API_DECL ev_tstamp ev_rt_now = 0; /* needs to be initialised to make it a definition despite extern */
787 #define VAR(name,decl) static decl; 1621 #define VAR(name,decl) static decl;
788 #include "ev_vars.h" 1622 #include "ev_vars.h"
789 #undef VAR 1623 #undef VAR
790 1624
791 static int ev_default_loop_ptr; 1625 static int ev_default_loop_ptr;
… …
806 1640
807/*****************************************************************************/ 1641/*****************************************************************************/
808 1642
809#ifndef EV_HAVE_EV_TIME 1643#ifndef EV_HAVE_EV_TIME
810ev_tstamp 1644ev_tstamp
811ev_time (void) 1645ev_time (void) EV_THROW
812{ 1646{
813#if EV_USE_REALTIME 1647#if EV_USE_REALTIME
814 if (expect_true (have_realtime)) 1648 if (expect_true (have_realtime))
815 { 1649 {
816 struct timespec ts; 1650 struct timespec ts;
… …
840 return ev_time (); 1674 return ev_time ();
841} 1675}
842 1676
843#if EV_MULTIPLICITY 1677#if EV_MULTIPLICITY
844ev_tstamp 1678ev_tstamp
845ev_now (EV_P) 1679ev_now (EV_P) EV_THROW
846{ 1680{
847 return ev_rt_now; 1681 return ev_rt_now;
848} 1682}
849#endif 1683#endif
850 1684
851void 1685void
852ev_sleep (ev_tstamp delay) 1686ev_sleep (ev_tstamp delay) EV_THROW
853{ 1687{
854 if (delay > 0.) 1688 if (delay > 0.)
855 { 1689 {
856#if EV_USE_NANOSLEEP 1690#if EV_USE_NANOSLEEP
857 struct timespec ts; 1691 struct timespec ts;
858 1692
859 EV_TS_SET (ts, delay); 1693 EV_TS_SET (ts, delay);
860 nanosleep (&ts, 0); 1694 nanosleep (&ts, 0);
861#elif defined(_WIN32) 1695#elif defined _WIN32
862 Sleep ((unsigned long)(delay * 1e3)); 1696 Sleep ((unsigned long)(delay * 1e3));
863#else 1697#else
864 struct timeval tv; 1698 struct timeval tv;
865 1699
866 /* here we rely on sys/time.h + sys/types.h + unistd.h providing select */ 1700 /* here we rely on sys/time.h + sys/types.h + unistd.h providing select */
… …
870 select (0, 0, 0, 0, &tv); 1704 select (0, 0, 0, 0, &tv);
871#endif 1705#endif
872 } 1706 }
873} 1707}
874 1708
875inline_speed int
876ev_timeout_to_ms (ev_tstamp timeout)
877{
878 int ms = timeout * 1000. + .999999;
879
880 return expect_true (ms) ? ms : timeout < 1e-6 ? 0 : 1;
881}
882
883/*****************************************************************************/ 1709/*****************************************************************************/
884 1710
885#define MALLOC_ROUND 4096 /* prefer to allocate in chunks of this size, must be 2**n and >> 4 longs */ 1711#define MALLOC_ROUND 4096 /* prefer to allocate in chunks of this size, must be 2**n and >> 4 longs */
886 1712
887/* find a suitable new size for the given array, */ 1713/* find a suitable new size for the given array, */
… …
893 1719
894 do 1720 do
895 ncur <<= 1; 1721 ncur <<= 1;
896 while (cnt > ncur); 1722 while (cnt > ncur);
897 1723
898 /* if size is large, round to MALLOC_ROUND - 4 * longs to accomodate malloc overhead */ 1724 /* if size is large, round to MALLOC_ROUND - 4 * longs to accommodate malloc overhead */
899 if (elem * ncur > MALLOC_ROUND - sizeof (void *) * 4) 1725 if (elem * ncur > MALLOC_ROUND - sizeof (void *) * 4)
900 { 1726 {
901 ncur *= elem; 1727 ncur *= elem;
902 ncur = (ncur + elem + (MALLOC_ROUND - 1) + sizeof (void *) * 4) & ~(MALLOC_ROUND - 1); 1728 ncur = (ncur + elem + (MALLOC_ROUND - 1) + sizeof (void *) * 4) & ~(MALLOC_ROUND - 1);
903 ncur = ncur - sizeof (void *) * 4; 1729 ncur = ncur - sizeof (void *) * 4;
… …
905 } 1731 }
906 1732
907 return ncur; 1733 return ncur;
908} 1734}
909 1735
910static noinline void * 1736static void * noinline ecb_cold
911array_realloc (int elem, void *base, int *cur, int cnt) 1737array_realloc (int elem, void *base, int *cur, int cnt)
912{ 1738{
913 *cur = array_nextsize (elem, *cur, cnt); 1739 *cur = array_nextsize (elem, *cur, cnt);
914 return ev_realloc (base, elem * *cur); 1740 return ev_realloc (base, elem * *cur);
915} 1741}
… …
918 memset ((void *)(base), 0, sizeof (*(base)) * (count)) 1744 memset ((void *)(base), 0, sizeof (*(base)) * (count))
919 1745
920#define array_needsize(type,base,cur,cnt,init) \ 1746#define array_needsize(type,base,cur,cnt,init) \
921 if (expect_false ((cnt) > (cur))) \ 1747 if (expect_false ((cnt) > (cur))) \
922 { \ 1748 { \
923 int ocur_ = (cur); \ 1749 int ecb_unused ocur_ = (cur); \
924 (base) = (type *)array_realloc \ 1750 (base) = (type *)array_realloc \
925 (sizeof (type), (base), &(cur), (cnt)); \ 1751 (sizeof (type), (base), &(cur), (cnt)); \
926 init ((base) + (ocur_), (cur) - ocur_); \ 1752 init ((base) + (ocur_), (cur) - ocur_); \
927 } 1753 }
928 1754
… …
946pendingcb (EV_P_ ev_prepare *w, int revents) 1772pendingcb (EV_P_ ev_prepare *w, int revents)
947{ 1773{
948} 1774}
949 1775
950void noinline 1776void noinline
951ev_feed_event (EV_P_ void *w, int revents) 1777ev_feed_event (EV_P_ void *w, int revents) EV_THROW
952{ 1778{
953 W w_ = (W)w; 1779 W w_ = (W)w;
954 int pri = ABSPRI (w_); 1780 int pri = ABSPRI (w_);
955 1781
956 if (expect_false (w_->pending)) 1782 if (expect_false (w_->pending))
… …
960 w_->pending = ++pendingcnt [pri]; 1786 w_->pending = ++pendingcnt [pri];
961 array_needsize (ANPENDING, pendings [pri], pendingmax [pri], w_->pending, EMPTY2); 1787 array_needsize (ANPENDING, pendings [pri], pendingmax [pri], w_->pending, EMPTY2);
962 pendings [pri][w_->pending - 1].w = w_; 1788 pendings [pri][w_->pending - 1].w = w_;
963 pendings [pri][w_->pending - 1].events = revents; 1789 pendings [pri][w_->pending - 1].events = revents;
964 } 1790 }
1791
1792 pendingpri = NUMPRI - 1;
965} 1793}
966 1794
967inline_speed void 1795inline_speed void
968feed_reverse (EV_P_ W w) 1796feed_reverse (EV_P_ W w)
969{ 1797{
… …
1015 if (expect_true (!anfd->reify)) 1843 if (expect_true (!anfd->reify))
1016 fd_event_nocheck (EV_A_ fd, revents); 1844 fd_event_nocheck (EV_A_ fd, revents);
1017} 1845}
1018 1846
1019void 1847void
1020ev_feed_fd_event (EV_P_ int fd, int revents) 1848ev_feed_fd_event (EV_P_ int fd, int revents) EV_THROW
1021{ 1849{
1022 if (fd >= 0 && fd < anfdmax) 1850 if (fd >= 0 && fd < anfdmax)
1023 fd_event_nocheck (EV_A_ fd, revents); 1851 fd_event_nocheck (EV_A_ fd, revents);
1024} 1852}
1025 1853
… …
1098 fdchanges [fdchangecnt - 1] = fd; 1926 fdchanges [fdchangecnt - 1] = fd;
1099 } 1927 }
1100} 1928}
1101 1929
1102/* the given fd is invalid/unusable, so make sure it doesn't hurt us anymore */ 1930/* the given fd is invalid/unusable, so make sure it doesn't hurt us anymore */
1103inline_speed void 1931inline_speed void ecb_cold
1104fd_kill (EV_P_ int fd) 1932fd_kill (EV_P_ int fd)
1105{ 1933{
1106 ev_io *w; 1934 ev_io *w;
1107 1935
1108 while ((w = (ev_io *)anfds [fd].head)) 1936 while ((w = (ev_io *)anfds [fd].head))
… …
1111 ev_feed_event (EV_A_ (W)w, EV_ERROR | EV_READ | EV_WRITE); 1939 ev_feed_event (EV_A_ (W)w, EV_ERROR | EV_READ | EV_WRITE);
1112 } 1940 }
1113} 1941}
1114 1942
1115/* check whether the given fd is actually valid, for error recovery */ 1943/* check whether the given fd is actually valid, for error recovery */
1116inline_size int 1944inline_size int ecb_cold
1117fd_valid (int fd) 1945fd_valid (int fd)
1118{ 1946{
1119#ifdef _WIN32 1947#ifdef _WIN32
1120 return EV_FD_TO_WIN32_HANDLE (fd) != -1; 1948 return EV_FD_TO_WIN32_HANDLE (fd) != -1;
1121#else 1949#else
1122 return fcntl (fd, F_GETFD) != -1; 1950 return fcntl (fd, F_GETFD) != -1;
1123#endif 1951#endif
1124} 1952}
1125 1953
1126/* called on EBADF to verify fds */ 1954/* called on EBADF to verify fds */
1127static void noinline 1955static void noinline ecb_cold
1128fd_ebadf (EV_P) 1956fd_ebadf (EV_P)
1129{ 1957{
1130 int fd; 1958 int fd;
1131 1959
1132 for (fd = 0; fd < anfdmax; ++fd) 1960 for (fd = 0; fd < anfdmax; ++fd)
… …
1134 if (!fd_valid (fd) && errno == EBADF) 1962 if (!fd_valid (fd) && errno == EBADF)
1135 fd_kill (EV_A_ fd); 1963 fd_kill (EV_A_ fd);
1136} 1964}
1137 1965
1138/* called on ENOMEM in select/poll to kill some fds and retry */ 1966/* called on ENOMEM in select/poll to kill some fds and retry */
1139static void noinline 1967static void noinline ecb_cold
1140fd_enomem (EV_P) 1968fd_enomem (EV_P)
1141{ 1969{
1142 int fd; 1970 int fd;
1143 1971
1144 for (fd = anfdmax; fd--; ) 1972 for (fd = anfdmax; fd--; )
… …
1339 2167
1340/*****************************************************************************/ 2168/*****************************************************************************/
1341 2169
1342#if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE 2170#if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE
1343 2171
1344static void noinline 2172static void noinline ecb_cold
1345evpipe_init (EV_P) 2173evpipe_init (EV_P)
1346{ 2174{
1347 if (!ev_is_active (&pipe_w)) 2175 if (!ev_is_active (&pipe_w))
1348 { 2176 {
2177 int fds [2];
2178
1349# if EV_USE_EVENTFD 2179# if EV_USE_EVENTFD
2180 fds [0] = -1;
1350 evfd = eventfd (0, EFD_NONBLOCK | EFD_CLOEXEC); 2181 fds [1] = eventfd (0, EFD_NONBLOCK | EFD_CLOEXEC);
1351 if (evfd < 0 && errno == EINVAL) 2182 if (fds [1] < 0 && errno == EINVAL)
1352 evfd = eventfd (0, 0); 2183 fds [1] = eventfd (0, 0);
1353 2184
1354 if (evfd >= 0) 2185 if (fds [1] < 0)
2186# endif
1355 { 2187 {
2188 while (pipe (fds))
2189 ev_syserr ("(libev) error creating signal/async pipe");
2190
2191 fd_intern (fds [0]);
2192 }
2193
1356 evpipe [0] = -1; 2194 evpipe [0] = fds [0];
1357 fd_intern (evfd); /* doing it twice doesn't hurt */ 2195
1358 ev_io_set (&pipe_w, evfd, EV_READ); 2196 if (evpipe [1] < 0)
2197 evpipe [1] = fds [1]; /* first call, set write fd */
2198 else
2199 {
2200 /* on subsequent calls, do not change evpipe [1] */
2201 /* so that evpipe_write can always rely on its value. */
2202 /* this branch does not do anything sensible on windows, */
2203 /* so must not be executed on windows */
2204
2205 dup2 (fds [1], evpipe [1]);
2206 close (fds [1]);
2207 }
2208
2209 fd_intern (evpipe [1]);
2210
2211 ev_io_set (&pipe_w, evpipe [0] < 0 ? evpipe [1] : evpipe [0], EV_READ);
2212 ev_io_start (EV_A_ &pipe_w);
2213 ev_unref (EV_A); /* watcher should not keep loop alive */
2214 }
2215}
2216
2217inline_speed void
2218evpipe_write (EV_P_ EV_ATOMIC_T *flag)
2219{
2220 ECB_MEMORY_FENCE; /* push out the write before this function was called, acquire flag */
2221
2222 if (expect_true (*flag))
2223 return;
2224
2225 *flag = 1;
2226 ECB_MEMORY_FENCE_RELEASE; /* make sure flag is visible before the wakeup */
2227
2228 pipe_write_skipped = 1;
2229
2230 ECB_MEMORY_FENCE; /* make sure pipe_write_skipped is visible before we check pipe_write_wanted */
2231
2232 if (pipe_write_wanted)
2233 {
2234 int old_errno;
2235
2236 pipe_write_skipped = 0;
2237 ECB_MEMORY_FENCE_RELEASE;
2238
2239 old_errno = errno; /* save errno because write will clobber it */
2240
2241#if EV_USE_EVENTFD
2242 if (evpipe [0] < 0)
2243 {
2244 uint64_t counter = 1;
2245 write (evpipe [1], &counter, sizeof (uint64_t));
1359 } 2246 }
1360 else 2247 else
1361# endif 2248#endif
1362 { 2249 {
1363 while (pipe (evpipe)) 2250#ifdef _WIN32
1364 ev_syserr ("(libev) error creating signal/async pipe"); 2251 WSABUF buf;
1365 2252 DWORD sent;
1366 fd_intern (evpipe [0]); 2253 buf.buf = &buf;
1367 fd_intern (evpipe [1]); 2254 buf.len = 1;
1368 ev_io_set (&pipe_w, evpipe [0], EV_READ); 2255 WSASend (EV_FD_TO_WIN32_HANDLE (evpipe [1]), &buf, 1, &sent, 0, 0, 0);
2256#else
2257 write (evpipe [1], &(evpipe [1]), 1);
2258#endif
1369 } 2259 }
1370
1371 ev_io_start (EV_A_ &pipe_w);
1372 ev_unref (EV_A); /* watcher should not keep loop alive */
1373 }
1374}
1375
1376inline_size void
1377evpipe_write (EV_P_ EV_ATOMIC_T *flag)
1378{
1379 if (!*flag)
1380 {
1381 int old_errno = errno; /* save errno because write might clobber it */
1382 char dummy;
1383
1384 *flag = 1;
1385
1386#if EV_USE_EVENTFD
1387 if (evfd >= 0)
1388 {
1389 uint64_t counter = 1;
1390 write (evfd, &counter, sizeof (uint64_t));
1391 }
1392 else
1393#endif
1394 /* win32 people keep sending patches that change this write() to send() */
1395 /* and then run away. but send() is wrong, it wants a socket handle on win32 */
1396 /* so when you think this write should be a send instead, please find out */
1397 /* where your send() is from - it's definitely not the microsoft send, and */
1398 /* tell me. thank you. */
1399 write (evpipe [1], &dummy, 1);
1400 2260
1401 errno = old_errno; 2261 errno = old_errno;
1402 } 2262 }
1403} 2263}
1404 2264
… …
1407static void 2267static void
1408pipecb (EV_P_ ev_io *iow, int revents) 2268pipecb (EV_P_ ev_io *iow, int revents)
1409{ 2269{
1410 int i; 2270 int i;
1411 2271
2272 if (revents & EV_READ)
2273 {
1412#if EV_USE_EVENTFD 2274#if EV_USE_EVENTFD
1413 if (evfd >= 0) 2275 if (evpipe [0] < 0)
1414 { 2276 {
1415 uint64_t counter; 2277 uint64_t counter;
1416 read (evfd, &counter, sizeof (uint64_t)); 2278 read (evpipe [1], &counter, sizeof (uint64_t));
1417 } 2279 }
1418 else 2280 else
1419#endif 2281#endif
1420 { 2282 {
1421 char dummy; 2283 char dummy[4];
1422 /* see discussion in evpipe_write when you think this read should be recv in win32 */ 2284#ifdef _WIN32
2285 WSABUF buf;
2286 DWORD recvd;
2287 DWORD flags = 0;
2288 buf.buf = dummy;
2289 buf.len = sizeof (dummy);
2290 WSARecv (EV_FD_TO_WIN32_HANDLE (evpipe [0]), &buf, 1, &recvd, &flags, 0, 0);
2291#else
1423 read (evpipe [0], &dummy, 1); 2292 read (evpipe [0], &dummy, sizeof (dummy));
2293#endif
2294 }
1424 } 2295 }
2296
2297 pipe_write_skipped = 0;
2298
2299 ECB_MEMORY_FENCE; /* push out skipped, acquire flags */
1425 2300
1426#if EV_SIGNAL_ENABLE 2301#if EV_SIGNAL_ENABLE
1427 if (sig_pending) 2302 if (sig_pending)
1428 { 2303 {
1429 sig_pending = 0; 2304 sig_pending = 0;
2305
2306 ECB_MEMORY_FENCE;
1430 2307
1431 for (i = EV_NSIG - 1; i--; ) 2308 for (i = EV_NSIG - 1; i--; )
1432 if (expect_false (signals [i].pending)) 2309 if (expect_false (signals [i].pending))
1433 ev_feed_signal_event (EV_A_ i + 1); 2310 ev_feed_signal_event (EV_A_ i + 1);
1434 } 2311 }
… …
1436 2313
1437#if EV_ASYNC_ENABLE 2314#if EV_ASYNC_ENABLE
1438 if (async_pending) 2315 if (async_pending)
1439 { 2316 {
1440 async_pending = 0; 2317 async_pending = 0;
2318
2319 ECB_MEMORY_FENCE;
1441 2320
1442 for (i = asynccnt; i--; ) 2321 for (i = asynccnt; i--; )
1443 if (asyncs [i]->sent) 2322 if (asyncs [i]->sent)
1444 { 2323 {
1445 asyncs [i]->sent = 0; 2324 asyncs [i]->sent = 0;
2325 ECB_MEMORY_FENCE_RELEASE;
1446 ev_feed_event (EV_A_ asyncs [i], EV_ASYNC); 2326 ev_feed_event (EV_A_ asyncs [i], EV_ASYNC);
1447 } 2327 }
1448 } 2328 }
1449#endif 2329#endif
1450} 2330}
1451 2331
1452/*****************************************************************************/ 2332/*****************************************************************************/
1453 2333
1454void 2334void
1455ev_feed_signal (int signum) 2335ev_feed_signal (int signum) EV_THROW
1456{ 2336{
1457#if EV_MULTIPLICITY 2337#if EV_MULTIPLICITY
2338 EV_P;
2339 ECB_MEMORY_FENCE_ACQUIRE;
1458 EV_P = signals [signum - 1].loop; 2340 EV_A = signals [signum - 1].loop;
1459 2341
1460 if (!EV_A) 2342 if (!EV_A)
1461 return; 2343 return;
1462#endif 2344#endif
1463 2345
… …
1474 2356
1475 ev_feed_signal (signum); 2357 ev_feed_signal (signum);
1476} 2358}
1477 2359
1478void noinline 2360void noinline
1479ev_feed_signal_event (EV_P_ int signum) 2361ev_feed_signal_event (EV_P_ int signum) EV_THROW
1480{ 2362{
1481 WL w; 2363 WL w;
1482 2364
1483 if (expect_false (signum <= 0 || signum > EV_NSIG)) 2365 if (expect_false (signum <= 0 || signum >= EV_NSIG))
1484 return; 2366 return;
1485 2367
1486 --signum; 2368 --signum;
1487 2369
1488#if EV_MULTIPLICITY 2370#if EV_MULTIPLICITY
… …
1492 if (expect_false (signals [signum].loop != EV_A)) 2374 if (expect_false (signals [signum].loop != EV_A))
1493 return; 2375 return;
1494#endif 2376#endif
1495 2377
1496 signals [signum].pending = 0; 2378 signals [signum].pending = 0;
2379 ECB_MEMORY_FENCE_RELEASE;
1497 2380
1498 for (w = signals [signum].head; w; w = w->next) 2381 for (w = signals [signum].head; w; w = w->next)
1499 ev_feed_event (EV_A_ (W)w, EV_SIGNAL); 2382 ev_feed_event (EV_A_ (W)w, EV_SIGNAL);
1500} 2383}
1501 2384
… …
1599#endif 2482#endif
1600#if EV_USE_SELECT 2483#if EV_USE_SELECT
1601# include "ev_select.c" 2484# include "ev_select.c"
1602#endif 2485#endif
1603 2486
1604int 2487int ecb_cold
1605ev_version_major (void) 2488ev_version_major (void) EV_THROW
1606{ 2489{
1607 return EV_VERSION_MAJOR; 2490 return EV_VERSION_MAJOR;
1608} 2491}
1609 2492
1610int 2493int ecb_cold
1611ev_version_minor (void) 2494ev_version_minor (void) EV_THROW
1612{ 2495{
1613 return EV_VERSION_MINOR; 2496 return EV_VERSION_MINOR;
1614} 2497}
1615 2498
1616/* return true if we are running with elevated privileges and should ignore env variables */ 2499/* return true if we are running with elevated privileges and should ignore env variables */
1617int inline_size 2500int inline_size ecb_cold
1618enable_secure (void) 2501enable_secure (void)
1619{ 2502{
1620#ifdef _WIN32 2503#ifdef _WIN32
1621 return 0; 2504 return 0;
1622#else 2505#else
1623 return getuid () != geteuid () 2506 return getuid () != geteuid ()
1624 || getgid () != getegid (); 2507 || getgid () != getegid ();
1625#endif 2508#endif
1626} 2509}
1627 2510
1628unsigned int 2511unsigned int ecb_cold
1629ev_supported_backends (void) 2512ev_supported_backends (void) EV_THROW
1630{ 2513{
1631 unsigned int flags = 0; 2514 unsigned int flags = 0;
1632 2515
1633 if (EV_USE_PORT ) flags |= EVBACKEND_PORT; 2516 if (EV_USE_PORT ) flags |= EVBACKEND_PORT;
1634 if (EV_USE_KQUEUE) flags |= EVBACKEND_KQUEUE; 2517 if (EV_USE_KQUEUE) flags |= EVBACKEND_KQUEUE;
… …
1637 if (EV_USE_SELECT) flags |= EVBACKEND_SELECT; 2520 if (EV_USE_SELECT) flags |= EVBACKEND_SELECT;
1638 2521
1639 return flags; 2522 return flags;
1640} 2523}
1641 2524
1642unsigned int 2525unsigned int ecb_cold
1643ev_recommended_backends (void) 2526ev_recommended_backends (void) EV_THROW
1644{ 2527{
1645 unsigned int flags = ev_supported_backends (); 2528 unsigned int flags = ev_supported_backends ();
1646 2529
1647#ifndef __NetBSD__ 2530#ifndef __NetBSD__
1648 /* kqueue is borked on everything but netbsd apparently */ 2531 /* kqueue is borked on everything but netbsd apparently */
… …
1659#endif 2542#endif
1660 2543
1661 return flags; 2544 return flags;
1662} 2545}
1663 2546
1664unsigned int 2547unsigned int ecb_cold
1665ev_embeddable_backends (void) 2548ev_embeddable_backends (void) EV_THROW
1666{ 2549{
1667 int flags = EVBACKEND_EPOLL | EVBACKEND_KQUEUE | EVBACKEND_PORT; 2550 int flags = EVBACKEND_EPOLL | EVBACKEND_KQUEUE | EVBACKEND_PORT;
1668 2551
1669 /* epoll embeddability broken on all linux versions up to at least 2.6.23 */ 2552 /* epoll embeddability broken on all linux versions up to at least 2.6.23 */
1670 if (ev_linux_version () < 0x020620) /* disable it on linux < 2.6.32 */ 2553 if (ev_linux_version () < 0x020620) /* disable it on linux < 2.6.32 */
… …
1672 2555
1673 return flags; 2556 return flags;
1674} 2557}
1675 2558
1676unsigned int 2559unsigned int
1677ev_backend (EV_P) 2560ev_backend (EV_P) EV_THROW
1678{ 2561{
1679 return backend; 2562 return backend;
1680} 2563}
1681 2564
1682#if EV_FEATURE_API 2565#if EV_FEATURE_API
1683unsigned int 2566unsigned int
1684ev_iteration (EV_P) 2567ev_iteration (EV_P) EV_THROW
1685{ 2568{
1686 return loop_count; 2569 return loop_count;
1687} 2570}
1688 2571
1689unsigned int 2572unsigned int
1690ev_depth (EV_P) 2573ev_depth (EV_P) EV_THROW
1691{ 2574{
1692 return loop_depth; 2575 return loop_depth;
1693} 2576}
1694 2577
1695void 2578void
1696ev_set_io_collect_interval (EV_P_ ev_tstamp interval) 2579ev_set_io_collect_interval (EV_P_ ev_tstamp interval) EV_THROW
1697{ 2580{
1698 io_blocktime = interval; 2581 io_blocktime = interval;
1699} 2582}
1700 2583
1701void 2584void
1702ev_set_timeout_collect_interval (EV_P_ ev_tstamp interval) 2585ev_set_timeout_collect_interval (EV_P_ ev_tstamp interval) EV_THROW
1703{ 2586{
1704 timeout_blocktime = interval; 2587 timeout_blocktime = interval;
1705} 2588}
1706 2589
1707void 2590void
1708ev_set_userdata (EV_P_ void *data) 2591ev_set_userdata (EV_P_ void *data) EV_THROW
1709{ 2592{
1710 userdata = data; 2593 userdata = data;
1711} 2594}
1712 2595
1713void * 2596void *
1714ev_userdata (EV_P) 2597ev_userdata (EV_P) EV_THROW
1715{ 2598{
1716 return userdata; 2599 return userdata;
1717} 2600}
1718 2601
2602void
1719void ev_set_invoke_pending_cb (EV_P_ void (*invoke_pending_cb)(EV_P)) 2603ev_set_invoke_pending_cb (EV_P_ ev_loop_callback invoke_pending_cb) EV_THROW
1720{ 2604{
1721 invoke_cb = invoke_pending_cb; 2605 invoke_cb = invoke_pending_cb;
1722} 2606}
1723 2607
1724void ev_set_loop_release_cb (EV_P_ void (*release)(EV_P), void (*acquire)(EV_P)) 2608void
2609ev_set_loop_release_cb (EV_P_ ev_loop_callback_nothrow release, ev_loop_callback_nothrow acquire) EV_THROW
1725{ 2610{
1726 release_cb = release; 2611 release_cb = release;
1727 acquire_cb = acquire; 2612 acquire_cb = acquire;
1728} 2613}
1729#endif 2614#endif
1730 2615
1731/* initialise a loop structure, must be zero-initialised */ 2616/* initialise a loop structure, must be zero-initialised */
1732static void noinline 2617static void noinline ecb_cold
1733loop_init (EV_P_ unsigned int flags) 2618loop_init (EV_P_ unsigned int flags) EV_THROW
1734{ 2619{
1735 if (!backend) 2620 if (!backend)
1736 { 2621 {
1737 origflags = flags; 2622 origflags = flags;
1738 2623
… …
1765 if (!(flags & EVFLAG_NOENV) 2650 if (!(flags & EVFLAG_NOENV)
1766 && !enable_secure () 2651 && !enable_secure ()
1767 && getenv ("LIBEV_FLAGS")) 2652 && getenv ("LIBEV_FLAGS"))
1768 flags = atoi (getenv ("LIBEV_FLAGS")); 2653 flags = atoi (getenv ("LIBEV_FLAGS"));
1769 2654
1770 ev_rt_now = ev_time (); 2655 ev_rt_now = ev_time ();
1771 mn_now = get_clock (); 2656 mn_now = get_clock ();
1772 now_floor = mn_now; 2657 now_floor = mn_now;
1773 rtmn_diff = ev_rt_now - mn_now; 2658 rtmn_diff = ev_rt_now - mn_now;
1774#if EV_FEATURE_API 2659#if EV_FEATURE_API
1775 invoke_cb = ev_invoke_pending; 2660 invoke_cb = ev_invoke_pending;
1776#endif 2661#endif
1777 2662
1778 io_blocktime = 0.; 2663 io_blocktime = 0.;
1779 timeout_blocktime = 0.; 2664 timeout_blocktime = 0.;
1780 backend = 0; 2665 backend = 0;
1781 backend_fd = -1; 2666 backend_fd = -1;
1782 sig_pending = 0; 2667 sig_pending = 0;
1783#if EV_ASYNC_ENABLE 2668#if EV_ASYNC_ENABLE
1784 async_pending = 0; 2669 async_pending = 0;
1785#endif 2670#endif
2671 pipe_write_skipped = 0;
2672 pipe_write_wanted = 0;
2673 evpipe [0] = -1;
2674 evpipe [1] = -1;
1786#if EV_USE_INOTIFY 2675#if EV_USE_INOTIFY
1787 fs_fd = flags & EVFLAG_NOINOTIFY ? -1 : -2; 2676 fs_fd = flags & EVFLAG_NOINOTIFY ? -1 : -2;
1788#endif 2677#endif
1789#if EV_USE_SIGNALFD 2678#if EV_USE_SIGNALFD
1790 sigfd = flags & EVFLAG_SIGNALFD ? -2 : -1; 2679 sigfd = flags & EVFLAG_SIGNALFD ? -2 : -1;
1791#endif 2680#endif
1792 2681
1793 if (!(flags & EVBACKEND_MASK)) 2682 if (!(flags & EVBACKEND_MASK))
1794 flags |= ev_recommended_backends (); 2683 flags |= ev_recommended_backends ();
1795 2684
… …
1820#endif 2709#endif
1821 } 2710 }
1822} 2711}
1823 2712
1824/* free up a loop structure */ 2713/* free up a loop structure */
1825void 2714void ecb_cold
1826ev_loop_destroy (EV_P) 2715ev_loop_destroy (EV_P)
1827{ 2716{
1828 int i; 2717 int i;
1829 2718
1830#if EV_MULTIPLICITY 2719#if EV_MULTIPLICITY
… …
1841 EV_INVOKE_PENDING; 2730 EV_INVOKE_PENDING;
1842 } 2731 }
1843#endif 2732#endif
1844 2733
1845#if EV_CHILD_ENABLE 2734#if EV_CHILD_ENABLE
1846 if (ev_is_active (&childev)) 2735 if (ev_is_default_loop (EV_A) && ev_is_active (&childev))
1847 { 2736 {
1848 ev_ref (EV_A); /* child watcher */ 2737 ev_ref (EV_A); /* child watcher */
1849 ev_signal_stop (EV_A_ &childev); 2738 ev_signal_stop (EV_A_ &childev);
1850 } 2739 }
1851#endif 2740#endif
… …
1853 if (ev_is_active (&pipe_w)) 2742 if (ev_is_active (&pipe_w))
1854 { 2743 {
1855 /*ev_ref (EV_A);*/ 2744 /*ev_ref (EV_A);*/
1856 /*ev_io_stop (EV_A_ &pipe_w);*/ 2745 /*ev_io_stop (EV_A_ &pipe_w);*/
1857 2746
1858#if EV_USE_EVENTFD
1859 if (evfd >= 0)
1860 close (evfd);
1861#endif
1862
1863 if (evpipe [0] >= 0)
1864 {
1865 EV_WIN32_CLOSE_FD (evpipe [0]); 2747 if (evpipe [0] >= 0) EV_WIN32_CLOSE_FD (evpipe [0]);
1866 EV_WIN32_CLOSE_FD (evpipe [1]); 2748 if (evpipe [1] >= 0) EV_WIN32_CLOSE_FD (evpipe [1]);
1867 }
1868 } 2749 }
1869 2750
1870#if EV_USE_SIGNALFD 2751#if EV_USE_SIGNALFD
1871 if (ev_is_active (&sigfd_w)) 2752 if (ev_is_active (&sigfd_w))
1872 close (sigfd); 2753 close (sigfd);
… …
1958#endif 2839#endif
1959#if EV_USE_INOTIFY 2840#if EV_USE_INOTIFY
1960 infy_fork (EV_A); 2841 infy_fork (EV_A);
1961#endif 2842#endif
1962 2843
2844#if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE
1963 if (ev_is_active (&pipe_w)) 2845 if (ev_is_active (&pipe_w))
1964 { 2846 {
1965 /* this "locks" the handlers against writing to the pipe */ 2847 /* pipe_write_wanted must be false now, so modifying fd vars should be safe */
1966 /* while we modify the fd vars */
1967 sig_pending = 1;
1968#if EV_ASYNC_ENABLE
1969 async_pending = 1;
1970#endif
1971 2848
1972 ev_ref (EV_A); 2849 ev_ref (EV_A);
1973 ev_io_stop (EV_A_ &pipe_w); 2850 ev_io_stop (EV_A_ &pipe_w);
1974 2851
1975#if EV_USE_EVENTFD
1976 if (evfd >= 0)
1977 close (evfd);
1978#endif
1979
1980 if (evpipe [0] >= 0) 2852 if (evpipe [0] >= 0)
1981 {
1982 EV_WIN32_CLOSE_FD (evpipe [0]); 2853 EV_WIN32_CLOSE_FD (evpipe [0]);
1983 EV_WIN32_CLOSE_FD (evpipe [1]);
1984 }
1985 2854
1986#if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE
1987 evpipe_init (EV_A); 2855 evpipe_init (EV_A);
1988 /* now iterate over everything, in case we missed something */ 2856 /* iterate over everything, in case we missed something before */
1989 pipecb (EV_A_ &pipe_w, EV_READ); 2857 ev_feed_event (EV_A_ &pipe_w, EV_CUSTOM);
1990#endif
1991 } 2858 }
2859#endif
1992 2860
1993 postfork = 0; 2861 postfork = 0;
1994} 2862}
1995 2863
1996#if EV_MULTIPLICITY 2864#if EV_MULTIPLICITY
1997 2865
1998struct ev_loop * 2866struct ev_loop * ecb_cold
1999ev_loop_new (unsigned int flags) 2867ev_loop_new (unsigned int flags) EV_THROW
2000{ 2868{
2001 EV_P = (struct ev_loop *)ev_malloc (sizeof (struct ev_loop)); 2869 EV_P = (struct ev_loop *)ev_malloc (sizeof (struct ev_loop));
2002 2870
2003 memset (EV_A, 0, sizeof (struct ev_loop)); 2871 memset (EV_A, 0, sizeof (struct ev_loop));
2004 loop_init (EV_A_ flags); 2872 loop_init (EV_A_ flags);
… …
2011} 2879}
2012 2880
2013#endif /* multiplicity */ 2881#endif /* multiplicity */
2014 2882
2015#if EV_VERIFY 2883#if EV_VERIFY
2016static void noinline 2884static void noinline ecb_cold
2017verify_watcher (EV_P_ W w) 2885verify_watcher (EV_P_ W w)
2018{ 2886{
2019 assert (("libev: watcher has invalid priority", ABSPRI (w) >= 0 && ABSPRI (w) < NUMPRI)); 2887 assert (("libev: watcher has invalid priority", ABSPRI (w) >= 0 && ABSPRI (w) < NUMPRI));
2020 2888
2021 if (w->pending) 2889 if (w->pending)
2022 assert (("libev: pending watcher not on pending queue", pendings [ABSPRI (w)][w->pending - 1].w == w)); 2890 assert (("libev: pending watcher not on pending queue", pendings [ABSPRI (w)][w->pending - 1].w == w));
2023} 2891}
2024 2892
2025static void noinline 2893static void noinline ecb_cold
2026verify_heap (EV_P_ ANHE *heap, int N) 2894verify_heap (EV_P_ ANHE *heap, int N)
2027{ 2895{
2028 int i; 2896 int i;
2029 2897
2030 for (i = HEAP0; i < N + HEAP0; ++i) 2898 for (i = HEAP0; i < N + HEAP0; ++i)
… …
2035 2903
2036 verify_watcher (EV_A_ (W)ANHE_w (heap [i])); 2904 verify_watcher (EV_A_ (W)ANHE_w (heap [i]));
2037 } 2905 }
2038} 2906}
2039 2907
2040static void noinline 2908static void noinline ecb_cold
2041array_verify (EV_P_ W *ws, int cnt) 2909array_verify (EV_P_ W *ws, int cnt)
2042{ 2910{
2043 while (cnt--) 2911 while (cnt--)
2044 { 2912 {
2045 assert (("libev: active index mismatch", ev_active (ws [cnt]) == cnt + 1)); 2913 assert (("libev: active index mismatch", ev_active (ws [cnt]) == cnt + 1));
… …
2047 } 2915 }
2048} 2916}
2049#endif 2917#endif
2050 2918
2051#if EV_FEATURE_API 2919#if EV_FEATURE_API
2052void 2920void ecb_cold
2053ev_verify (EV_P) 2921ev_verify (EV_P) EV_THROW
2054{ 2922{
2055#if EV_VERIFY 2923#if EV_VERIFY
2056 int i; 2924 int i;
2057 WL w; 2925 WL w, w2;
2058 2926
2059 assert (activecnt >= -1); 2927 assert (activecnt >= -1);
2060 2928
2061 assert (fdchangemax >= fdchangecnt); 2929 assert (fdchangemax >= fdchangecnt);
2062 for (i = 0; i < fdchangecnt; ++i) 2930 for (i = 0; i < fdchangecnt; ++i)
2063 assert (("libev: negative fd in fdchanges", fdchanges [i] >= 0)); 2931 assert (("libev: negative fd in fdchanges", fdchanges [i] >= 0));
2064 2932
2065 assert (anfdmax >= 0); 2933 assert (anfdmax >= 0);
2066 for (i = 0; i < anfdmax; ++i) 2934 for (i = 0; i < anfdmax; ++i)
2935 {
2936 int j = 0;
2937
2067 for (w = anfds [i].head; w; w = w->next) 2938 for (w = w2 = anfds [i].head; w; w = w->next)
2068 { 2939 {
2069 verify_watcher (EV_A_ (W)w); 2940 verify_watcher (EV_A_ (W)w);
2941
2942 if (j++ & 1)
2943 {
2944 assert (("libev: io watcher list contains a loop", w != w2));
2945 w2 = w2->next;
2946 }
2947
2070 assert (("libev: inactive fd watcher on anfd list", ev_active (w) == 1)); 2948 assert (("libev: inactive fd watcher on anfd list", ev_active (w) == 1));
2071 assert (("libev: fd mismatch between watcher and anfd", ((ev_io *)w)->fd == i)); 2949 assert (("libev: fd mismatch between watcher and anfd", ((ev_io *)w)->fd == i));
2072 } 2950 }
2951 }
2073 2952
2074 assert (timermax >= timercnt); 2953 assert (timermax >= timercnt);
2075 verify_heap (EV_A_ timers, timercnt); 2954 verify_heap (EV_A_ timers, timercnt);
2076 2955
2077#if EV_PERIODIC_ENABLE 2956#if EV_PERIODIC_ENABLE
… …
2123#endif 3002#endif
2124} 3003}
2125#endif 3004#endif
2126 3005
2127#if EV_MULTIPLICITY 3006#if EV_MULTIPLICITY
2128struct ev_loop * 3007struct ev_loop * ecb_cold
2129#else 3008#else
2130int 3009int
2131#endif 3010#endif
2132ev_default_loop (unsigned int flags) 3011ev_default_loop (unsigned int flags) EV_THROW
2133{ 3012{
2134 if (!ev_default_loop_ptr) 3013 if (!ev_default_loop_ptr)
2135 { 3014 {
2136#if EV_MULTIPLICITY 3015#if EV_MULTIPLICITY
2137 EV_P = ev_default_loop_ptr = &default_loop_struct; 3016 EV_P = ev_default_loop_ptr = &default_loop_struct;
… …
2156 3035
2157 return ev_default_loop_ptr; 3036 return ev_default_loop_ptr;
2158} 3037}
2159 3038
2160void 3039void
2161ev_loop_fork (EV_P) 3040ev_loop_fork (EV_P) EV_THROW
2162{ 3041{
2163 postfork = 1; /* must be in line with ev_default_fork */ 3042 postfork = 1;
2164} 3043}
2165 3044
2166/*****************************************************************************/ 3045/*****************************************************************************/
2167 3046
2168void 3047void
… …
2170{ 3049{
2171 EV_CB_INVOKE ((W)w, revents); 3050 EV_CB_INVOKE ((W)w, revents);
2172} 3051}
2173 3052
2174unsigned int 3053unsigned int
2175ev_pending_count (EV_P) 3054ev_pending_count (EV_P) EV_THROW
2176{ 3055{
2177 int pri; 3056 int pri;
2178 unsigned int count = 0; 3057 unsigned int count = 0;
2179 3058
2180 for (pri = NUMPRI; pri--; ) 3059 for (pri = NUMPRI; pri--; )
… …
2184} 3063}
2185 3064
2186void noinline 3065void noinline
2187ev_invoke_pending (EV_P) 3066ev_invoke_pending (EV_P)
2188{ 3067{
2189 int pri; 3068 pendingpri = NUMPRI;
2190 3069
2191 for (pri = NUMPRI; pri--; ) 3070 while (pendingpri) /* pendingpri possibly gets modified in the inner loop */
3071 {
3072 --pendingpri;
3073
2192 while (pendingcnt [pri]) 3074 while (pendingcnt [pendingpri])
2193 { 3075 {
2194 ANPENDING *p = pendings [pri] + --pendingcnt [pri]; 3076 ANPENDING *p = pendings [pendingpri] + --pendingcnt [pendingpri];
2195 3077
2196 p->w->pending = 0; 3078 p->w->pending = 0;
2197 EV_CB_INVOKE (p->w, p->events); 3079 EV_CB_INVOKE (p->w, p->events);
2198 EV_FREQUENT_CHECK; 3080 EV_FREQUENT_CHECK;
2199 } 3081 }
3082 }
2200} 3083}
2201 3084
2202#if EV_IDLE_ENABLE 3085#if EV_IDLE_ENABLE
2203/* make idle watchers pending. this handles the "call-idle */ 3086/* make idle watchers pending. this handles the "call-idle */
2204/* only when higher priorities are idle" logic */ 3087/* only when higher priorities are idle" logic */
… …
2294{ 3177{
2295 EV_FREQUENT_CHECK; 3178 EV_FREQUENT_CHECK;
2296 3179
2297 while (periodiccnt && ANHE_at (periodics [HEAP0]) < ev_rt_now) 3180 while (periodiccnt && ANHE_at (periodics [HEAP0]) < ev_rt_now)
2298 { 3181 {
2299 int feed_count = 0;
2300
2301 do 3182 do
2302 { 3183 {
2303 ev_periodic *w = (ev_periodic *)ANHE_w (periodics [HEAP0]); 3184 ev_periodic *w = (ev_periodic *)ANHE_w (periodics [HEAP0]);
2304 3185
2305 /*assert (("libev: inactive timer on periodic heap detected", ev_is_active (w)));*/ 3186 /*assert (("libev: inactive timer on periodic heap detected", ev_is_active (w)));*/
… …
2332 } 3213 }
2333} 3214}
2334 3215
2335/* simply recalculate all periodics */ 3216/* simply recalculate all periodics */
2336/* TODO: maybe ensure that at least one event happens when jumping forward? */ 3217/* TODO: maybe ensure that at least one event happens when jumping forward? */
2337static void noinline 3218static void noinline ecb_cold
2338periodics_reschedule (EV_P) 3219periodics_reschedule (EV_P)
2339{ 3220{
2340 int i; 3221 int i;
2341 3222
2342 /* adjust periodics after time jump */ 3223 /* adjust periodics after time jump */
… …
2355 reheap (periodics, periodiccnt); 3236 reheap (periodics, periodiccnt);
2356} 3237}
2357#endif 3238#endif
2358 3239
2359/* adjust all timers by a given offset */ 3240/* adjust all timers by a given offset */
2360static void noinline 3241static void noinline ecb_cold
2361timers_reschedule (EV_P_ ev_tstamp adjust) 3242timers_reschedule (EV_P_ ev_tstamp adjust)
2362{ 3243{
2363 int i; 3244 int i;
2364 3245
2365 for (i = 0; i < timercnt; ++i) 3246 for (i = 0; i < timercnt; ++i)
… …
2439 3320
2440 mn_now = ev_rt_now; 3321 mn_now = ev_rt_now;
2441 } 3322 }
2442} 3323}
2443 3324
2444void 3325int
2445ev_run (EV_P_ int flags) 3326ev_run (EV_P_ int flags)
2446{ 3327{
2447#if EV_FEATURE_API 3328#if EV_FEATURE_API
2448 ++loop_depth; 3329 ++loop_depth;
2449#endif 3330#endif
… …
2507 ev_tstamp prev_mn_now = mn_now; 3388 ev_tstamp prev_mn_now = mn_now;
2508 3389
2509 /* update time to cancel out callback processing overhead */ 3390 /* update time to cancel out callback processing overhead */
2510 time_update (EV_A_ 1e100); 3391 time_update (EV_A_ 1e100);
2511 3392
3393 /* from now on, we want a pipe-wake-up */
3394 pipe_write_wanted = 1;
3395
3396 ECB_MEMORY_FENCE; /* make sure pipe_write_wanted is visible before we check for potential skips */
3397
2512 if (expect_true (!(flags & EVRUN_NOWAIT || idleall || !activecnt))) 3398 if (expect_true (!(flags & EVRUN_NOWAIT || idleall || !activecnt || pipe_write_skipped)))
2513 { 3399 {
2514 waittime = MAX_BLOCKTIME; 3400 waittime = MAX_BLOCKTIME;
2515 3401
2516 if (timercnt) 3402 if (timercnt)
2517 { 3403 {
2518 ev_tstamp to = ANHE_at (timers [HEAP0]) - mn_now + backend_fudge; 3404 ev_tstamp to = ANHE_at (timers [HEAP0]) - mn_now;
2519 if (waittime > to) waittime = to; 3405 if (waittime > to) waittime = to;
2520 } 3406 }
2521 3407
2522#if EV_PERIODIC_ENABLE 3408#if EV_PERIODIC_ENABLE
2523 if (periodiccnt) 3409 if (periodiccnt)
2524 { 3410 {
2525 ev_tstamp to = ANHE_at (periodics [HEAP0]) - ev_rt_now + backend_fudge; 3411 ev_tstamp to = ANHE_at (periodics [HEAP0]) - ev_rt_now;
2526 if (waittime > to) waittime = to; 3412 if (waittime > to) waittime = to;
2527 } 3413 }
2528#endif 3414#endif
2529 3415
2530 /* don't let timeouts decrease the waittime below timeout_blocktime */ 3416 /* don't let timeouts decrease the waittime below timeout_blocktime */
2531 if (expect_false (waittime < timeout_blocktime)) 3417 if (expect_false (waittime < timeout_blocktime))
2532 waittime = timeout_blocktime; 3418 waittime = timeout_blocktime;
3419
3420 /* at this point, we NEED to wait, so we have to ensure */
3421 /* to pass a minimum nonzero value to the backend */
3422 if (expect_false (waittime < backend_mintime))
3423 waittime = backend_mintime;
2533 3424
2534 /* extra check because io_blocktime is commonly 0 */ 3425 /* extra check because io_blocktime is commonly 0 */
2535 if (expect_false (io_blocktime)) 3426 if (expect_false (io_blocktime))
2536 { 3427 {
2537 sleeptime = io_blocktime - (mn_now - prev_mn_now); 3428 sleeptime = io_blocktime - (mn_now - prev_mn_now);
2538 3429
2539 if (sleeptime > waittime - backend_fudge) 3430 if (sleeptime > waittime - backend_mintime)
2540 sleeptime = waittime - backend_fudge; 3431 sleeptime = waittime - backend_mintime;
2541 3432
2542 if (expect_true (sleeptime > 0.)) 3433 if (expect_true (sleeptime > 0.))
2543 { 3434 {
2544 ev_sleep (sleeptime); 3435 ev_sleep (sleeptime);
2545 waittime -= sleeptime; 3436 waittime -= sleeptime;
… …
2552#endif 3443#endif
2553 assert ((loop_done = EVBREAK_RECURSE, 1)); /* assert for side effect */ 3444 assert ((loop_done = EVBREAK_RECURSE, 1)); /* assert for side effect */
2554 backend_poll (EV_A_ waittime); 3445 backend_poll (EV_A_ waittime);
2555 assert ((loop_done = EVBREAK_CANCEL, 1)); /* assert for side effect */ 3446 assert ((loop_done = EVBREAK_CANCEL, 1)); /* assert for side effect */
2556 3447
3448 pipe_write_wanted = 0; /* just an optimisation, no fence needed */
3449
3450 ECB_MEMORY_FENCE_ACQUIRE;
3451 if (pipe_write_skipped)
3452 {
3453 assert (("libev: pipe_w not active, but pipe not written", ev_is_active (&pipe_w)));
3454 ev_feed_event (EV_A_ &pipe_w, EV_CUSTOM);
3455 }
3456
3457
2557 /* update ev_rt_now, do magic */ 3458 /* update ev_rt_now, do magic */
2558 time_update (EV_A_ waittime + sleeptime); 3459 time_update (EV_A_ waittime + sleeptime);
2559 } 3460 }
2560 3461
2561 /* queue pending timers and reschedule them */ 3462 /* queue pending timers and reschedule them */
… …
2587 loop_done = EVBREAK_CANCEL; 3488 loop_done = EVBREAK_CANCEL;
2588 3489
2589#if EV_FEATURE_API 3490#if EV_FEATURE_API
2590 --loop_depth; 3491 --loop_depth;
2591#endif 3492#endif
3493
3494 return activecnt;
2592} 3495}
2593 3496
2594void 3497void
2595ev_break (EV_P_ int how) 3498ev_break (EV_P_ int how) EV_THROW
2596{ 3499{
2597 loop_done = how; 3500 loop_done = how;
2598} 3501}
2599 3502
2600void 3503void
2601ev_ref (EV_P) 3504ev_ref (EV_P) EV_THROW
2602{ 3505{
2603 ++activecnt; 3506 ++activecnt;
2604} 3507}
2605 3508
2606void 3509void
2607ev_unref (EV_P) 3510ev_unref (EV_P) EV_THROW
2608{ 3511{
2609 --activecnt; 3512 --activecnt;
2610} 3513}
2611 3514
2612void 3515void
2613ev_now_update (EV_P) 3516ev_now_update (EV_P) EV_THROW
2614{ 3517{
2615 time_update (EV_A_ 1e100); 3518 time_update (EV_A_ 1e100);
2616} 3519}
2617 3520
2618void 3521void
2619ev_suspend (EV_P) 3522ev_suspend (EV_P) EV_THROW
2620{ 3523{
2621 ev_now_update (EV_A); 3524 ev_now_update (EV_A);
2622} 3525}
2623 3526
2624void 3527void
2625ev_resume (EV_P) 3528ev_resume (EV_P) EV_THROW
2626{ 3529{
2627 ev_tstamp mn_prev = mn_now; 3530 ev_tstamp mn_prev = mn_now;
2628 3531
2629 ev_now_update (EV_A); 3532 ev_now_update (EV_A);
2630 timers_reschedule (EV_A_ mn_now - mn_prev); 3533 timers_reschedule (EV_A_ mn_now - mn_prev);
… …
2669 w->pending = 0; 3572 w->pending = 0;
2670 } 3573 }
2671} 3574}
2672 3575
2673int 3576int
2674ev_clear_pending (EV_P_ void *w) 3577ev_clear_pending (EV_P_ void *w) EV_THROW
2675{ 3578{
2676 W w_ = (W)w; 3579 W w_ = (W)w;
2677 int pending = w_->pending; 3580 int pending = w_->pending;
2678 3581
2679 if (expect_true (pending)) 3582 if (expect_true (pending))
… …
2712} 3615}
2713 3616
2714/*****************************************************************************/ 3617/*****************************************************************************/
2715 3618
2716void noinline 3619void noinline
2717ev_io_start (EV_P_ ev_io *w) 3620ev_io_start (EV_P_ ev_io *w) EV_THROW
2718{ 3621{
2719 int fd = w->fd; 3622 int fd = w->fd;
2720 3623
2721 if (expect_false (ev_is_active (w))) 3624 if (expect_false (ev_is_active (w)))
2722 return; 3625 return;
… …
2728 3631
2729 ev_start (EV_A_ (W)w, 1); 3632 ev_start (EV_A_ (W)w, 1);
2730 array_needsize (ANFD, anfds, anfdmax, fd + 1, array_init_zero); 3633 array_needsize (ANFD, anfds, anfdmax, fd + 1, array_init_zero);
2731 wlist_add (&anfds[fd].head, (WL)w); 3634 wlist_add (&anfds[fd].head, (WL)w);
2732 3635
3636 /* common bug, apparently */
3637 assert (("libev: ev_io_start called with corrupted watcher", ((WL)w)->next != (WL)w));
3638
2733 fd_change (EV_A_ fd, w->events & EV__IOFDSET | EV_ANFD_REIFY); 3639 fd_change (EV_A_ fd, w->events & EV__IOFDSET | EV_ANFD_REIFY);
2734 w->events &= ~EV__IOFDSET; 3640 w->events &= ~EV__IOFDSET;
2735 3641
2736 EV_FREQUENT_CHECK; 3642 EV_FREQUENT_CHECK;
2737} 3643}
2738 3644
2739void noinline 3645void noinline
2740ev_io_stop (EV_P_ ev_io *w) 3646ev_io_stop (EV_P_ ev_io *w) EV_THROW
2741{ 3647{
2742 clear_pending (EV_A_ (W)w); 3648 clear_pending (EV_A_ (W)w);
2743 if (expect_false (!ev_is_active (w))) 3649 if (expect_false (!ev_is_active (w)))
2744 return; 3650 return;
2745 3651
… …
2754 3660
2755 EV_FREQUENT_CHECK; 3661 EV_FREQUENT_CHECK;
2756} 3662}
2757 3663
2758void noinline 3664void noinline
2759ev_timer_start (EV_P_ ev_timer *w) 3665ev_timer_start (EV_P_ ev_timer *w) EV_THROW
2760{ 3666{
2761 if (expect_false (ev_is_active (w))) 3667 if (expect_false (ev_is_active (w)))
2762 return; 3668 return;
2763 3669
2764 ev_at (w) += mn_now; 3670 ev_at (w) += mn_now;
… …
2778 3684
2779 /*assert (("libev: internal timer heap corruption", timers [ev_active (w)] == (WT)w));*/ 3685 /*assert (("libev: internal timer heap corruption", timers [ev_active (w)] == (WT)w));*/
2780} 3686}
2781 3687
2782void noinline 3688void noinline
2783ev_timer_stop (EV_P_ ev_timer *w) 3689ev_timer_stop (EV_P_ ev_timer *w) EV_THROW
2784{ 3690{
2785 clear_pending (EV_A_ (W)w); 3691 clear_pending (EV_A_ (W)w);
2786 if (expect_false (!ev_is_active (w))) 3692 if (expect_false (!ev_is_active (w)))
2787 return; 3693 return;
2788 3694
… …
2808 3714
2809 EV_FREQUENT_CHECK; 3715 EV_FREQUENT_CHECK;
2810} 3716}
2811 3717
2812void noinline 3718void noinline
2813ev_timer_again (EV_P_ ev_timer *w) 3719ev_timer_again (EV_P_ ev_timer *w) EV_THROW
2814{ 3720{
2815 EV_FREQUENT_CHECK; 3721 EV_FREQUENT_CHECK;
3722
3723 clear_pending (EV_A_ (W)w);
2816 3724
2817 if (ev_is_active (w)) 3725 if (ev_is_active (w))
2818 { 3726 {
2819 if (w->repeat) 3727 if (w->repeat)
2820 { 3728 {
… …
2833 3741
2834 EV_FREQUENT_CHECK; 3742 EV_FREQUENT_CHECK;
2835} 3743}
2836 3744
2837ev_tstamp 3745ev_tstamp
2838ev_timer_remaining (EV_P_ ev_timer *w) 3746ev_timer_remaining (EV_P_ ev_timer *w) EV_THROW
2839{ 3747{
2840 return ev_at (w) - (ev_is_active (w) ? mn_now : 0.); 3748 return ev_at (w) - (ev_is_active (w) ? mn_now : 0.);
2841} 3749}
2842 3750
2843#if EV_PERIODIC_ENABLE 3751#if EV_PERIODIC_ENABLE
2844void noinline 3752void noinline
2845ev_periodic_start (EV_P_ ev_periodic *w) 3753ev_periodic_start (EV_P_ ev_periodic *w) EV_THROW
2846{ 3754{
2847 if (expect_false (ev_is_active (w))) 3755 if (expect_false (ev_is_active (w)))
2848 return; 3756 return;
2849 3757
2850 if (w->reschedule_cb) 3758 if (w->reschedule_cb)
… …
2870 3778
2871 /*assert (("libev: internal periodic heap corruption", ANHE_w (periodics [ev_active (w)]) == (WT)w));*/ 3779 /*assert (("libev: internal periodic heap corruption", ANHE_w (periodics [ev_active (w)]) == (WT)w));*/
2872} 3780}
2873 3781
2874void noinline 3782void noinline
2875ev_periodic_stop (EV_P_ ev_periodic *w) 3783ev_periodic_stop (EV_P_ ev_periodic *w) EV_THROW
2876{ 3784{
2877 clear_pending (EV_A_ (W)w); 3785 clear_pending (EV_A_ (W)w);
2878 if (expect_false (!ev_is_active (w))) 3786 if (expect_false (!ev_is_active (w)))
2879 return; 3787 return;
2880 3788
… …
2898 3806
2899 EV_FREQUENT_CHECK; 3807 EV_FREQUENT_CHECK;
2900} 3808}
2901 3809
2902void noinline 3810void noinline
2903ev_periodic_again (EV_P_ ev_periodic *w) 3811ev_periodic_again (EV_P_ ev_periodic *w) EV_THROW
2904{ 3812{
2905 /* TODO: use adjustheap and recalculation */ 3813 /* TODO: use adjustheap and recalculation */
2906 ev_periodic_stop (EV_A_ w); 3814 ev_periodic_stop (EV_A_ w);
2907 ev_periodic_start (EV_A_ w); 3815 ev_periodic_start (EV_A_ w);
2908} 3816}
… …
2913#endif 3821#endif
2914 3822
2915#if EV_SIGNAL_ENABLE 3823#if EV_SIGNAL_ENABLE
2916 3824
2917void noinline 3825void noinline
2918ev_signal_start (EV_P_ ev_signal *w) 3826ev_signal_start (EV_P_ ev_signal *w) EV_THROW
2919{ 3827{
2920 if (expect_false (ev_is_active (w))) 3828 if (expect_false (ev_is_active (w)))
2921 return; 3829 return;
2922 3830
2923 assert (("libev: ev_signal_start called with illegal signal number", w->signum > 0 && w->signum < EV_NSIG)); 3831 assert (("libev: ev_signal_start called with illegal signal number", w->signum > 0 && w->signum < EV_NSIG));
… …
2925#if EV_MULTIPLICITY 3833#if EV_MULTIPLICITY
2926 assert (("libev: a signal must not be attached to two different loops", 3834 assert (("libev: a signal must not be attached to two different loops",
2927 !signals [w->signum - 1].loop || signals [w->signum - 1].loop == loop)); 3835 !signals [w->signum - 1].loop || signals [w->signum - 1].loop == loop));
2928 3836
2929 signals [w->signum - 1].loop = EV_A; 3837 signals [w->signum - 1].loop = EV_A;
3838 ECB_MEMORY_FENCE_RELEASE;
2930#endif 3839#endif
2931 3840
2932 EV_FREQUENT_CHECK; 3841 EV_FREQUENT_CHECK;
2933 3842
2934#if EV_USE_SIGNALFD 3843#if EV_USE_SIGNALFD
… …
2994 3903
2995 EV_FREQUENT_CHECK; 3904 EV_FREQUENT_CHECK;
2996} 3905}
2997 3906
2998void noinline 3907void noinline
2999ev_signal_stop (EV_P_ ev_signal *w) 3908ev_signal_stop (EV_P_ ev_signal *w) EV_THROW
3000{ 3909{
3001 clear_pending (EV_A_ (W)w); 3910 clear_pending (EV_A_ (W)w);
3002 if (expect_false (!ev_is_active (w))) 3911 if (expect_false (!ev_is_active (w)))
3003 return; 3912 return;
3004 3913
… …
3035#endif 3944#endif
3036 3945
3037#if EV_CHILD_ENABLE 3946#if EV_CHILD_ENABLE
3038 3947
3039void 3948void
3040ev_child_start (EV_P_ ev_child *w) 3949ev_child_start (EV_P_ ev_child *w) EV_THROW
3041{ 3950{
3042#if EV_MULTIPLICITY 3951#if EV_MULTIPLICITY
3043 assert (("libev: child watchers are only supported in the default loop", loop == ev_default_loop_ptr)); 3952 assert (("libev: child watchers are only supported in the default loop", loop == ev_default_loop_ptr));
3044#endif 3953#endif
3045 if (expect_false (ev_is_active (w))) 3954 if (expect_false (ev_is_active (w)))
… …
3052 3961
3053 EV_FREQUENT_CHECK; 3962 EV_FREQUENT_CHECK;
3054} 3963}
3055 3964
3056void 3965void
3057ev_child_stop (EV_P_ ev_child *w) 3966ev_child_stop (EV_P_ ev_child *w) EV_THROW
3058{ 3967{
3059 clear_pending (EV_A_ (W)w); 3968 clear_pending (EV_A_ (W)w);
3060 if (expect_false (!ev_is_active (w))) 3969 if (expect_false (!ev_is_active (w)))
3061 return; 3970 return;
3062 3971
… …
3089# define EV_INOTIFY_BUFSIZE (sizeof (struct inotify_event) * 2 + NAME_MAX) 3998# define EV_INOTIFY_BUFSIZE (sizeof (struct inotify_event) * 2 + NAME_MAX)
3090 3999
3091static void noinline 4000static void noinline
3092infy_add (EV_P_ ev_stat *w) 4001infy_add (EV_P_ ev_stat *w)
3093{ 4002{
3094 w->wd = inotify_add_watch (fs_fd, w->path, IN_ATTRIB | IN_DELETE_SELF | IN_MOVE_SELF | IN_MODIFY | IN_DONT_FOLLOW | IN_MASK_ADD); 4003 w->wd = inotify_add_watch (fs_fd, w->path,
4004 IN_ATTRIB | IN_DELETE_SELF | IN_MOVE_SELF | IN_MODIFY
4005 | IN_CREATE | IN_DELETE | IN_MOVED_FROM | IN_MOVED_TO
4006 | IN_DONT_FOLLOW | IN_MASK_ADD);
3095 4007
3096 if (w->wd >= 0) 4008 if (w->wd >= 0)
3097 { 4009 {
3098 struct statfs sfs; 4010 struct statfs sfs;
3099 4011
… …
3103 4015
3104 if (!fs_2625) 4016 if (!fs_2625)
3105 w->timer.repeat = w->interval ? w->interval : DEF_STAT_INTERVAL; 4017 w->timer.repeat = w->interval ? w->interval : DEF_STAT_INTERVAL;
3106 else if (!statfs (w->path, &sfs) 4018 else if (!statfs (w->path, &sfs)
3107 && (sfs.f_type == 0x1373 /* devfs */ 4019 && (sfs.f_type == 0x1373 /* devfs */
4020 || sfs.f_type == 0x4006 /* fat */
4021 || sfs.f_type == 0x4d44 /* msdos */
3108 || sfs.f_type == 0xEF53 /* ext2/3 */ 4022 || sfs.f_type == 0xEF53 /* ext2/3 */
4023 || sfs.f_type == 0x72b6 /* jffs2 */
4024 || sfs.f_type == 0x858458f6 /* ramfs */
4025 || sfs.f_type == 0x5346544e /* ntfs */
3109 || sfs.f_type == 0x3153464a /* jfs */ 4026 || sfs.f_type == 0x3153464a /* jfs */
4027 || sfs.f_type == 0x9123683e /* btrfs */
3110 || sfs.f_type == 0x52654973 /* reiser3 */ 4028 || sfs.f_type == 0x52654973 /* reiser3 */
3111 || sfs.f_type == 0x01021994 /* tempfs */ 4029 || sfs.f_type == 0x01021994 /* tmpfs */
3112 || sfs.f_type == 0x58465342 /* xfs */)) 4030 || sfs.f_type == 0x58465342 /* xfs */))
3113 w->timer.repeat = 0.; /* filesystem is local, kernel new enough */ 4031 w->timer.repeat = 0.; /* filesystem is local, kernel new enough */
3114 else 4032 else
3115 w->timer.repeat = w->interval ? w->interval : NFS_STAT_INTERVAL; /* remote, use reduced frequency */ 4033 w->timer.repeat = w->interval ? w->interval : NFS_STAT_INTERVAL; /* remote, use reduced frequency */
3116 } 4034 }
… …
3214 infy_wd (EV_A_ ev->wd, ev->wd, ev); 4132 infy_wd (EV_A_ ev->wd, ev->wd, ev);
3215 ofs += sizeof (struct inotify_event) + ev->len; 4133 ofs += sizeof (struct inotify_event) + ev->len;
3216 } 4134 }
3217} 4135}
3218 4136
3219inline_size void 4137inline_size void ecb_cold
3220ev_check_2625 (EV_P) 4138ev_check_2625 (EV_P)
3221{ 4139{
3222 /* kernels < 2.6.25 are borked 4140 /* kernels < 2.6.25 are borked
3223 * http://www.ussg.indiana.edu/hypermail/linux/kernel/0711.3/1208.html 4141 * http://www.ussg.indiana.edu/hypermail/linux/kernel/0711.3/1208.html
3224 */ 4142 */
… …
3229} 4147}
3230 4148
3231inline_size int 4149inline_size int
3232infy_newfd (void) 4150infy_newfd (void)
3233{ 4151{
3234#if defined (IN_CLOEXEC) && defined (IN_NONBLOCK) 4152#if defined IN_CLOEXEC && defined IN_NONBLOCK
3235 int fd = inotify_init1 (IN_CLOEXEC | IN_NONBLOCK); 4153 int fd = inotify_init1 (IN_CLOEXEC | IN_NONBLOCK);
3236 if (fd >= 0) 4154 if (fd >= 0)
3237 return fd; 4155 return fd;
3238#endif 4156#endif
3239 return inotify_init (); 4157 return inotify_init ();
… …
3314#else 4232#else
3315# define EV_LSTAT(p,b) lstat (p, b) 4233# define EV_LSTAT(p,b) lstat (p, b)
3316#endif 4234#endif
3317 4235
3318void 4236void
3319ev_stat_stat (EV_P_ ev_stat *w) 4237ev_stat_stat (EV_P_ ev_stat *w) EV_THROW
3320{ 4238{
3321 if (lstat (w->path, &w->attr) < 0) 4239 if (lstat (w->path, &w->attr) < 0)
3322 w->attr.st_nlink = 0; 4240 w->attr.st_nlink = 0;
3323 else if (!w->attr.st_nlink) 4241 else if (!w->attr.st_nlink)
3324 w->attr.st_nlink = 1; 4242 w->attr.st_nlink = 1;
… …
3363 ev_feed_event (EV_A_ w, EV_STAT); 4281 ev_feed_event (EV_A_ w, EV_STAT);
3364 } 4282 }
3365} 4283}
3366 4284
3367void 4285void
3368ev_stat_start (EV_P_ ev_stat *w) 4286ev_stat_start (EV_P_ ev_stat *w) EV_THROW
3369{ 4287{
3370 if (expect_false (ev_is_active (w))) 4288 if (expect_false (ev_is_active (w)))
3371 return; 4289 return;
3372 4290
3373 ev_stat_stat (EV_A_ w); 4291 ev_stat_stat (EV_A_ w);
… …
3394 4312
3395 EV_FREQUENT_CHECK; 4313 EV_FREQUENT_CHECK;
3396} 4314}
3397 4315
3398void 4316void
3399ev_stat_stop (EV_P_ ev_stat *w) 4317ev_stat_stop (EV_P_ ev_stat *w) EV_THROW
3400{ 4318{
3401 clear_pending (EV_A_ (W)w); 4319 clear_pending (EV_A_ (W)w);
3402 if (expect_false (!ev_is_active (w))) 4320 if (expect_false (!ev_is_active (w)))
3403 return; 4321 return;
3404 4322
… …
3420} 4338}
3421#endif 4339#endif
3422 4340
3423#if EV_IDLE_ENABLE 4341#if EV_IDLE_ENABLE
3424void 4342void
3425ev_idle_start (EV_P_ ev_idle *w) 4343ev_idle_start (EV_P_ ev_idle *w) EV_THROW
3426{ 4344{
3427 if (expect_false (ev_is_active (w))) 4345 if (expect_false (ev_is_active (w)))
3428 return; 4346 return;
3429 4347
3430 pri_adjust (EV_A_ (W)w); 4348 pri_adjust (EV_A_ (W)w);
… …
3443 4361
3444 EV_FREQUENT_CHECK; 4362 EV_FREQUENT_CHECK;
3445} 4363}
3446 4364
3447void 4365void
3448ev_idle_stop (EV_P_ ev_idle *w) 4366ev_idle_stop (EV_P_ ev_idle *w) EV_THROW
3449{ 4367{
3450 clear_pending (EV_A_ (W)w); 4368 clear_pending (EV_A_ (W)w);
3451 if (expect_false (!ev_is_active (w))) 4369 if (expect_false (!ev_is_active (w)))
3452 return; 4370 return;
3453 4371
… …
3467} 4385}
3468#endif 4386#endif
3469 4387
3470#if EV_PREPARE_ENABLE 4388#if EV_PREPARE_ENABLE
3471void 4389void
3472ev_prepare_start (EV_P_ ev_prepare *w) 4390ev_prepare_start (EV_P_ ev_prepare *w) EV_THROW
3473{ 4391{
3474 if (expect_false (ev_is_active (w))) 4392 if (expect_false (ev_is_active (w)))
3475 return; 4393 return;
3476 4394
3477 EV_FREQUENT_CHECK; 4395 EV_FREQUENT_CHECK;
… …
3482 4400
3483 EV_FREQUENT_CHECK; 4401 EV_FREQUENT_CHECK;
3484} 4402}
3485 4403
3486void 4404void
3487ev_prepare_stop (EV_P_ ev_prepare *w) 4405ev_prepare_stop (EV_P_ ev_prepare *w) EV_THROW
3488{ 4406{
3489 clear_pending (EV_A_ (W)w); 4407 clear_pending (EV_A_ (W)w);
3490 if (expect_false (!ev_is_active (w))) 4408 if (expect_false (!ev_is_active (w)))
3491 return; 4409 return;
3492 4410
… …
3505} 4423}
3506#endif 4424#endif
3507 4425
3508#if EV_CHECK_ENABLE 4426#if EV_CHECK_ENABLE
3509void 4427void
3510ev_check_start (EV_P_ ev_check *w) 4428ev_check_start (EV_P_ ev_check *w) EV_THROW
3511{ 4429{
3512 if (expect_false (ev_is_active (w))) 4430 if (expect_false (ev_is_active (w)))
3513 return; 4431 return;
3514 4432
3515 EV_FREQUENT_CHECK; 4433 EV_FREQUENT_CHECK;
… …
3520 4438
3521 EV_FREQUENT_CHECK; 4439 EV_FREQUENT_CHECK;
3522} 4440}
3523 4441
3524void 4442void
3525ev_check_stop (EV_P_ ev_check *w) 4443ev_check_stop (EV_P_ ev_check *w) EV_THROW
3526{ 4444{
3527 clear_pending (EV_A_ (W)w); 4445 clear_pending (EV_A_ (W)w);
3528 if (expect_false (!ev_is_active (w))) 4446 if (expect_false (!ev_is_active (w)))
3529 return; 4447 return;
3530 4448
… …
3543} 4461}
3544#endif 4462#endif
3545 4463
3546#if EV_EMBED_ENABLE 4464#if EV_EMBED_ENABLE
3547void noinline 4465void noinline
3548ev_embed_sweep (EV_P_ ev_embed *w) 4466ev_embed_sweep (EV_P_ ev_embed *w) EV_THROW
3549{ 4467{
3550 ev_run (w->other, EVRUN_NOWAIT); 4468 ev_run (w->other, EVRUN_NOWAIT);
3551} 4469}
3552 4470
3553static void 4471static void
… …
3601 ev_idle_stop (EV_A_ idle); 4519 ev_idle_stop (EV_A_ idle);
3602} 4520}
3603#endif 4521#endif
3604 4522
3605void 4523void
3606ev_embed_start (EV_P_ ev_embed *w) 4524ev_embed_start (EV_P_ ev_embed *w) EV_THROW
3607{ 4525{
3608 if (expect_false (ev_is_active (w))) 4526 if (expect_false (ev_is_active (w)))
3609 return; 4527 return;
3610 4528
3611 { 4529 {
… …
3632 4550
3633 EV_FREQUENT_CHECK; 4551 EV_FREQUENT_CHECK;
3634} 4552}
3635 4553
3636void 4554void
3637ev_embed_stop (EV_P_ ev_embed *w) 4555ev_embed_stop (EV_P_ ev_embed *w) EV_THROW
3638{ 4556{
3639 clear_pending (EV_A_ (W)w); 4557 clear_pending (EV_A_ (W)w);
3640 if (expect_false (!ev_is_active (w))) 4558 if (expect_false (!ev_is_active (w)))
3641 return; 4559 return;
3642 4560
… …
3652} 4570}
3653#endif 4571#endif
3654 4572
3655#if EV_FORK_ENABLE 4573#if EV_FORK_ENABLE
3656void 4574void
3657ev_fork_start (EV_P_ ev_fork *w) 4575ev_fork_start (EV_P_ ev_fork *w) EV_THROW
3658{ 4576{
3659 if (expect_false (ev_is_active (w))) 4577 if (expect_false (ev_is_active (w)))
3660 return; 4578 return;
3661 4579
3662 EV_FREQUENT_CHECK; 4580 EV_FREQUENT_CHECK;
… …
3667 4585
3668 EV_FREQUENT_CHECK; 4586 EV_FREQUENT_CHECK;
3669} 4587}
3670 4588
3671void 4589void
3672ev_fork_stop (EV_P_ ev_fork *w) 4590ev_fork_stop (EV_P_ ev_fork *w) EV_THROW
3673{ 4591{
3674 clear_pending (EV_A_ (W)w); 4592 clear_pending (EV_A_ (W)w);
3675 if (expect_false (!ev_is_active (w))) 4593 if (expect_false (!ev_is_active (w)))
3676 return; 4594 return;
3677 4595
… …
3690} 4608}
3691#endif 4609#endif
3692 4610
3693#if EV_CLEANUP_ENABLE 4611#if EV_CLEANUP_ENABLE
3694void 4612void
3695ev_cleanup_start (EV_P_ ev_cleanup *w) 4613ev_cleanup_start (EV_P_ ev_cleanup *w) EV_THROW
3696{ 4614{
3697 if (expect_false (ev_is_active (w))) 4615 if (expect_false (ev_is_active (w)))
3698 return; 4616 return;
3699 4617
3700 EV_FREQUENT_CHECK; 4618 EV_FREQUENT_CHECK;
… …
3707 ev_unref (EV_A); 4625 ev_unref (EV_A);
3708 EV_FREQUENT_CHECK; 4626 EV_FREQUENT_CHECK;
3709} 4627}
3710 4628
3711void 4629void
3712ev_cleanup_stop (EV_P_ ev_cleanup *w) 4630ev_cleanup_stop (EV_P_ ev_cleanup *w) EV_THROW
3713{ 4631{
3714 clear_pending (EV_A_ (W)w); 4632 clear_pending (EV_A_ (W)w);
3715 if (expect_false (!ev_is_active (w))) 4633 if (expect_false (!ev_is_active (w)))
3716 return; 4634 return;
3717 4635
… …
3731} 4649}
3732#endif 4650#endif
3733 4651
3734#if EV_ASYNC_ENABLE 4652#if EV_ASYNC_ENABLE
3735void 4653void
3736ev_async_start (EV_P_ ev_async *w) 4654ev_async_start (EV_P_ ev_async *w) EV_THROW
3737{ 4655{
3738 if (expect_false (ev_is_active (w))) 4656 if (expect_false (ev_is_active (w)))
3739 return; 4657 return;
3740 4658
3741 w->sent = 0; 4659 w->sent = 0;
… …
3750 4668
3751 EV_FREQUENT_CHECK; 4669 EV_FREQUENT_CHECK;
3752} 4670}
3753 4671
3754void 4672void
3755ev_async_stop (EV_P_ ev_async *w) 4673ev_async_stop (EV_P_ ev_async *w) EV_THROW
3756{ 4674{
3757 clear_pending (EV_A_ (W)w); 4675 clear_pending (EV_A_ (W)w);
3758 if (expect_false (!ev_is_active (w))) 4676 if (expect_false (!ev_is_active (w)))
3759 return; 4677 return;
3760 4678
… …
3771 4689
3772 EV_FREQUENT_CHECK; 4690 EV_FREQUENT_CHECK;
3773} 4691}
3774 4692
3775void 4693void
3776ev_async_send (EV_P_ ev_async *w) 4694ev_async_send (EV_P_ ev_async *w) EV_THROW
3777{ 4695{
3778 w->sent = 1; 4696 w->sent = 1;
3779 evpipe_write (EV_A_ &async_pending); 4697 evpipe_write (EV_A_ &async_pending);
3780} 4698}
3781#endif 4699#endif
… …
3818 4736
3819 once_cb (EV_A_ once, revents | ev_clear_pending (EV_A_ &once->io)); 4737 once_cb (EV_A_ once, revents | ev_clear_pending (EV_A_ &once->io));
3820} 4738}
3821 4739
3822void 4740void
3823ev_once (EV_P_ int fd, int events, ev_tstamp timeout, void (*cb)(int revents, void *arg), void *arg) 4741ev_once (EV_P_ int fd, int events, ev_tstamp timeout, void (*cb)(int revents, void *arg), void *arg) EV_THROW
3824{ 4742{
3825 struct ev_once *once = (struct ev_once *)ev_malloc (sizeof (struct ev_once)); 4743 struct ev_once *once = (struct ev_once *)ev_malloc (sizeof (struct ev_once));
3826 4744
3827 if (expect_false (!once)) 4745 if (expect_false (!once))
3828 { 4746 {
… …
3849} 4767}
3850 4768
3851/*****************************************************************************/ 4769/*****************************************************************************/
3852 4770
3853#if EV_WALK_ENABLE 4771#if EV_WALK_ENABLE
3854void 4772void ecb_cold
3855ev_walk (EV_P_ int types, void (*cb)(EV_P_ int type, void *w)) 4773ev_walk (EV_P_ int types, void (*cb)(EV_P_ int type, void *w)) EV_THROW
3856{ 4774{
3857 int i, j; 4775 int i, j;
3858 ev_watcher_list *wl, *wn; 4776 ev_watcher_list *wl, *wn;
3859 4777
3860 if (types & (EV_IO | EV_EMBED)) 4778 if (types & (EV_IO | EV_EMBED))
… …
3903 cb (EV_A_ EV_PERIODIC, ANHE_w (periodics [i])); 4821 cb (EV_A_ EV_PERIODIC, ANHE_w (periodics [i]));
3904#endif 4822#endif
3905 4823
3906#if EV_IDLE_ENABLE 4824#if EV_IDLE_ENABLE
3907 if (types & EV_IDLE) 4825 if (types & EV_IDLE)
3908 for (j = NUMPRI; i--; ) 4826 for (j = NUMPRI; j--; )
3909 for (i = idlecnt [j]; i--; ) 4827 for (i = idlecnt [j]; i--; )
3910 cb (EV_A_ EV_IDLE, idles [j][i]); 4828 cb (EV_A_ EV_IDLE, idles [j][i]);
3911#endif 4829#endif
3912 4830
3913#if EV_FORK_ENABLE 4831#if EV_FORK_ENABLE
… …
3966 4884
3967#if EV_MULTIPLICITY 4885#if EV_MULTIPLICITY
3968 #include "ev_wrap.h" 4886 #include "ev_wrap.h"
3969#endif 4887#endif
3970 4888
3971EV_CPP(})
3972

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