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Comparing libev/ev.c (file contents):
Revision 1.401 by root, Tue Dec 20 04:08:35 2011 UTC vs.
Revision 1.480 by root, Thu Feb 18 04:48:05 2016 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 *
… …
43# include EV_CONFIG_H 43# include EV_CONFIG_H
44# else 44# else
45# include "config.h" 45# include "config.h"
46# endif 46# endif
47 47
48#if HAVE_FLOOR 48# if HAVE_FLOOR
49# ifndef EV_USE_FLOOR 49# ifndef EV_USE_FLOOR
50# define EV_USE_FLOOR 1 50# define EV_USE_FLOOR 1
51# endif
51# endif 52# endif
52#endif
53 53
54# if HAVE_CLOCK_SYSCALL 54# if HAVE_CLOCK_SYSCALL
55# ifndef EV_USE_CLOCK_SYSCALL 55# ifndef EV_USE_CLOCK_SYSCALL
56# define EV_USE_CLOCK_SYSCALL 1 56# define EV_USE_CLOCK_SYSCALL 1
57# ifndef EV_USE_REALTIME 57# ifndef EV_USE_REALTIME
… …
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
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
198
188#ifndef _WIN32 199#ifndef _WIN32
189# include <sys/time.h> 200# include <sys/time.h>
190# include <sys/wait.h> 201# include <sys/wait.h>
191# include <unistd.h> 202# include <unistd.h>
192#else 203#else
193# include <io.h> 204# include <io.h>
194# define WIN32_LEAN_AND_MEAN 205# define WIN32_LEAN_AND_MEAN
206# include <winsock2.h>
195# include <windows.h> 207# include <windows.h>
196# ifndef EV_SELECT_IS_WINSOCKET 208# ifndef EV_SELECT_IS_WINSOCKET
197# define EV_SELECT_IS_WINSOCKET 1 209# define EV_SELECT_IS_WINSOCKET 1
198# endif 210# endif
199# undef EV_AVOID_STDIO 211# undef EV_AVOID_STDIO
… …
208#define _DARWIN_UNLIMITED_SELECT 1 220#define _DARWIN_UNLIMITED_SELECT 1
209 221
210/* 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 */
211 223
212/* try to deduce the maximum number of signals on this platform */ 224/* try to deduce the maximum number of signals on this platform */
213#if defined (EV_NSIG) 225#if defined EV_NSIG
214/* use what's provided */ 226/* use what's provided */
215#elif defined (NSIG) 227#elif defined NSIG
216# define EV_NSIG (NSIG) 228# define EV_NSIG (NSIG)
217#elif defined(_NSIG) 229#elif defined _NSIG
218# define EV_NSIG (_NSIG) 230# define EV_NSIG (_NSIG)
219#elif defined (SIGMAX) 231#elif defined SIGMAX
220# define EV_NSIG (SIGMAX+1) 232# define EV_NSIG (SIGMAX+1)
221#elif defined (SIG_MAX) 233#elif defined SIG_MAX
222# define EV_NSIG (SIG_MAX+1) 234# define EV_NSIG (SIG_MAX+1)
223#elif defined (_SIG_MAX) 235#elif defined _SIG_MAX
224# define EV_NSIG (_SIG_MAX+1) 236# define EV_NSIG (_SIG_MAX+1)
225#elif defined (MAXSIG) 237#elif defined MAXSIG
226# define EV_NSIG (MAXSIG+1) 238# define EV_NSIG (MAXSIG+1)
227#elif defined (MAX_SIG) 239#elif defined MAX_SIG
228# define EV_NSIG (MAX_SIG+1) 240# define EV_NSIG (MAX_SIG+1)
229#elif defined (SIGARRAYSIZE) 241#elif defined SIGARRAYSIZE
230# define EV_NSIG (SIGARRAYSIZE) /* Assume ary[SIGARRAYSIZE] */ 242# define EV_NSIG (SIGARRAYSIZE) /* Assume ary[SIGARRAYSIZE] */
231#elif defined (_sys_nsig) 243#elif defined _sys_nsig
232# define EV_NSIG (_sys_nsig) /* Solaris 2.5 */ 244# define EV_NSIG (_sys_nsig) /* Solaris 2.5 */
233#else 245#else
234# error "unable to find value for NSIG, please report" 246# define EV_NSIG (8 * sizeof (sigset_t) + 1)
235/* to make it compile regardless, just remove the above line, */
236/* but consider reporting it, too! :) */
237# define EV_NSIG 65
238#endif 247#endif
239 248
240#ifndef EV_USE_FLOOR 249#ifndef EV_USE_FLOOR
241# define EV_USE_FLOOR 0 250# define EV_USE_FLOOR 0
242#endif 251#endif
243 252
244#ifndef EV_USE_CLOCK_SYSCALL 253#ifndef EV_USE_CLOCK_SYSCALL
245# if __linux && __GLIBC__ >= 2 254# if __linux && __GLIBC__ == 2 && __GLIBC_MINOR__ < 17
246# define EV_USE_CLOCK_SYSCALL EV_FEATURE_OS 255# define EV_USE_CLOCK_SYSCALL EV_FEATURE_OS
247# else 256# else
248# define EV_USE_CLOCK_SYSCALL 0 257# define EV_USE_CLOCK_SYSCALL 0
249# endif 258# endif
250#endif 259#endif
251 260
261#if !(_POSIX_TIMERS > 0)
262# ifndef EV_USE_MONOTONIC
263# define EV_USE_MONOTONIC 0
264# endif
265# ifndef EV_USE_REALTIME
266# define EV_USE_REALTIME 0
267# endif
268#endif
269
252#ifndef EV_USE_MONOTONIC 270#ifndef EV_USE_MONOTONIC
253# if defined (_POSIX_MONOTONIC_CLOCK) && _POSIX_MONOTONIC_CLOCK >= 0 271# if defined _POSIX_MONOTONIC_CLOCK && _POSIX_MONOTONIC_CLOCK >= 0
254# define EV_USE_MONOTONIC EV_FEATURE_OS 272# define EV_USE_MONOTONIC EV_FEATURE_OS
255# else 273# else
256# define EV_USE_MONOTONIC 0 274# define EV_USE_MONOTONIC 0
257# endif 275# endif
258#endif 276#endif
… …
345 363
346#ifndef EV_HEAP_CACHE_AT 364#ifndef EV_HEAP_CACHE_AT
347# define EV_HEAP_CACHE_AT EV_FEATURE_DATA 365# define EV_HEAP_CACHE_AT EV_FEATURE_DATA
348#endif 366#endif
349 367
368#ifdef ANDROID
369/* supposedly, android doesn't typedef fd_mask */
370# undef EV_USE_SELECT
371# define EV_USE_SELECT 0
372/* supposedly, we need to include syscall.h, not sys/syscall.h, so just disable */
373# undef EV_USE_CLOCK_SYSCALL
374# define EV_USE_CLOCK_SYSCALL 0
375#endif
376
377/* aix's poll.h seems to cause lots of trouble */
378#ifdef _AIX
379/* AIX has a completely broken poll.h header */
380# undef EV_USE_POLL
381# define EV_USE_POLL 0
382#endif
383
350/* on linux, we can use a (slow) syscall to avoid a dependency on pthread, */ 384/* on linux, we can use a (slow) syscall to avoid a dependency on pthread, */
351/* which makes programs even slower. might work on other unices, too. */ 385/* which makes programs even slower. might work on other unices, too. */
352#if EV_USE_CLOCK_SYSCALL 386#if EV_USE_CLOCK_SYSCALL
353# include <syscall.h> 387# include <sys/syscall.h>
354# ifdef SYS_clock_gettime 388# ifdef SYS_clock_gettime
355# define clock_gettime(id, ts) syscall (SYS_clock_gettime, (id), (ts)) 389# define clock_gettime(id, ts) syscall (SYS_clock_gettime, (id), (ts))
356# undef EV_USE_MONOTONIC 390# undef EV_USE_MONOTONIC
357# define EV_USE_MONOTONIC 1 391# define EV_USE_MONOTONIC 1
358# else 392# else
… …
361# endif 395# endif
362#endif 396#endif
363 397
364/* this block fixes any misconfiguration where we know we run into trouble otherwise */ 398/* this block fixes any misconfiguration where we know we run into trouble otherwise */
365 399
366#ifdef _AIX
367/* AIX has a completely broken poll.h header */
368# undef EV_USE_POLL
369# define EV_USE_POLL 0
370#endif
371
372#ifndef CLOCK_MONOTONIC 400#ifndef CLOCK_MONOTONIC
373# undef EV_USE_MONOTONIC 401# undef EV_USE_MONOTONIC
374# define EV_USE_MONOTONIC 0 402# define EV_USE_MONOTONIC 0
375#endif 403#endif
376 404
… …
384# define EV_USE_INOTIFY 0 412# define EV_USE_INOTIFY 0
385#endif 413#endif
386 414
387#if !EV_USE_NANOSLEEP 415#if !EV_USE_NANOSLEEP
388/* hp-ux has it in sys/time.h, which we unconditionally include above */ 416/* hp-ux has it in sys/time.h, which we unconditionally include above */
389# if !defined(_WIN32) && !defined(__hpux) 417# if !defined _WIN32 && !defined __hpux
390# include <sys/select.h> 418# include <sys/select.h>
391# endif 419# endif
392#endif 420#endif
393 421
394#if EV_USE_INOTIFY 422#if EV_USE_INOTIFY
… …
397/* some very old inotify.h headers don't have IN_DONT_FOLLOW */ 425/* some very old inotify.h headers don't have IN_DONT_FOLLOW */
398# ifndef IN_DONT_FOLLOW 426# ifndef IN_DONT_FOLLOW
399# undef EV_USE_INOTIFY 427# undef EV_USE_INOTIFY
400# define EV_USE_INOTIFY 0 428# define EV_USE_INOTIFY 0
401# endif 429# endif
402#endif
403
404#if EV_SELECT_IS_WINSOCKET
405# include <winsock.h>
406#endif 430#endif
407 431
408#if EV_USE_EVENTFD 432#if EV_USE_EVENTFD
409/* our minimum requirement is glibc 2.7 which has the stub, but not the header */ 433/* our minimum requirement is glibc 2.7 which has the stub, but not the header */
410# include <stdint.h> 434# include <stdint.h>
… …
467/* the following is ecb.h embedded into libev - use update_ev_c to update from an external copy */ 491/* the following is ecb.h embedded into libev - use update_ev_c to update from an external copy */
468/* ECB.H BEGIN */ 492/* ECB.H BEGIN */
469/* 493/*
470 * libecb - http://software.schmorp.de/pkg/libecb 494 * libecb - http://software.schmorp.de/pkg/libecb
471 * 495 *
472 * Copyright (©) 2009-2011 Marc Alexander Lehmann <libecb@schmorp.de> 496 * Copyright (©) 2009-2015 Marc Alexander Lehmann <libecb@schmorp.de>
473 * Copyright (©) 2011 Emanuele Giaquinta 497 * Copyright (©) 2011 Emanuele Giaquinta
474 * All rights reserved. 498 * All rights reserved.
475 * 499 *
476 * Redistribution and use in source and binary forms, with or without modifica- 500 * Redistribution and use in source and binary forms, with or without modifica-
477 * tion, are permitted provided that the following conditions are met: 501 * tion, are permitted provided that the following conditions are met:
… …
491 * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; 515 * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS;
492 * OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, 516 * OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
493 * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTH- 517 * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTH-
494 * ERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED 518 * ERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
495 * OF THE POSSIBILITY OF SUCH DAMAGE. 519 * OF THE POSSIBILITY OF SUCH DAMAGE.
520 *
521 * Alternatively, the contents of this file may be used under the terms of
522 * the GNU General Public License ("GPL") version 2 or any later version,
523 * in which case the provisions of the GPL are applicable instead of
524 * the above. If you wish to allow the use of your version of this file
525 * only under the terms of the GPL and not to allow others to use your
526 * version of this file under the BSD license, indicate your decision
527 * by deleting the provisions above and replace them with the notice
528 * and other provisions required by the GPL. If you do not delete the
529 * provisions above, a recipient may use your version of this file under
530 * either the BSD or the GPL.
496 */ 531 */
497 532
498#ifndef ECB_H 533#ifndef ECB_H
499#define ECB_H 534#define ECB_H
535
536/* 16 bits major, 16 bits minor */
537#define ECB_VERSION 0x00010005
500 538
501#ifdef _WIN32 539#ifdef _WIN32
502 typedef signed char int8_t; 540 typedef signed char int8_t;
503 typedef unsigned char uint8_t; 541 typedef unsigned char uint8_t;
504 typedef signed short int16_t; 542 typedef signed short int16_t;
… …
510 typedef unsigned long long uint64_t; 548 typedef unsigned long long uint64_t;
511 #else /* _MSC_VER || __BORLANDC__ */ 549 #else /* _MSC_VER || __BORLANDC__ */
512 typedef signed __int64 int64_t; 550 typedef signed __int64 int64_t;
513 typedef unsigned __int64 uint64_t; 551 typedef unsigned __int64 uint64_t;
514 #endif 552 #endif
553 #ifdef _WIN64
554 #define ECB_PTRSIZE 8
555 typedef uint64_t uintptr_t;
556 typedef int64_t intptr_t;
557 #else
558 #define ECB_PTRSIZE 4
559 typedef uint32_t uintptr_t;
560 typedef int32_t intptr_t;
561 #endif
515#else 562#else
516 #include <inttypes.h> 563 #include <inttypes.h>
564 #if (defined INTPTR_MAX ? INTPTR_MAX : ULONG_MAX) > 0xffffffffU
565 #define ECB_PTRSIZE 8
566 #else
567 #define ECB_PTRSIZE 4
568 #endif
569#endif
570
571#define ECB_GCC_AMD64 (__amd64 || __amd64__ || __x86_64 || __x86_64__)
572#define ECB_MSVC_AMD64 (_M_AMD64 || _M_X64)
573
574/* work around x32 idiocy by defining proper macros */
575#if ECB_GCC_AMD64 || ECB_MSVC_AMD64
576 #if _ILP32
577 #define ECB_AMD64_X32 1
578 #else
579 #define ECB_AMD64 1
580 #endif
517#endif 581#endif
518 582
519/* many compilers define _GNUC_ to some versions but then only implement 583/* many compilers define _GNUC_ to some versions but then only implement
520 * what their idiot authors think are the "more important" extensions, 584 * what their idiot authors think are the "more important" extensions,
521 * causing enormous grief in return for some better fake benchmark numbers. 585 * causing enormous grief in return for some better fake benchmark numbers.
522 * or so. 586 * or so.
523 * we try to detect these and simply assume they are not gcc - if they have 587 * we try to detect these and simply assume they are not gcc - if they have
524 * an issue with that they should have done it right in the first place. 588 * an issue with that they should have done it right in the first place.
525 */ 589 */
526#ifndef ECB_GCC_VERSION
527 #if !defined(__GNUC_MINOR__) || defined(__INTEL_COMPILER) || defined(__SUNPRO_C) || defined(__SUNPRO_CC) || defined(__llvm__) || defined(__clang__) 590#if !defined __GNUC_MINOR__ || defined __INTEL_COMPILER || defined __SUNPRO_C || defined __SUNPRO_CC || defined __llvm__ || defined __clang__
528 #define ECB_GCC_VERSION(major,minor) 0 591 #define ECB_GCC_VERSION(major,minor) 0
529 #else 592#else
530 #define ECB_GCC_VERSION(major,minor) (__GNUC__ > (major) || (__GNUC__ == (major) && __GNUC_MINOR__ >= (minor))) 593 #define ECB_GCC_VERSION(major,minor) (__GNUC__ > (major) || (__GNUC__ == (major) && __GNUC_MINOR__ >= (minor)))
531 #endif 594#endif
595
596#define ECB_CLANG_VERSION(major,minor) (__clang_major__ > (major) || (__clang_major__ == (major) && __clang_minor__ >= (minor)))
597
598#if __clang__ && defined __has_builtin
599 #define ECB_CLANG_BUILTIN(x) __has_builtin (x)
600#else
601 #define ECB_CLANG_BUILTIN(x) 0
602#endif
603
604#if __clang__ && defined __has_extension
605 #define ECB_CLANG_EXTENSION(x) __has_extension (x)
606#else
607 #define ECB_CLANG_EXTENSION(x) 0
608#endif
609
610#define ECB_CPP (__cplusplus+0)
611#define ECB_CPP11 (__cplusplus >= 201103L)
612
613#if ECB_CPP
614 #define ECB_C 0
615 #define ECB_STDC_VERSION 0
616#else
617 #define ECB_C 1
618 #define ECB_STDC_VERSION __STDC_VERSION__
619#endif
620
621#define ECB_C99 (ECB_STDC_VERSION >= 199901L)
622#define ECB_C11 (ECB_STDC_VERSION >= 201112L)
623
624#if ECB_CPP
625 #define ECB_EXTERN_C extern "C"
626 #define ECB_EXTERN_C_BEG ECB_EXTERN_C {
627 #define ECB_EXTERN_C_END }
628#else
629 #define ECB_EXTERN_C extern
630 #define ECB_EXTERN_C_BEG
631 #define ECB_EXTERN_C_END
532#endif 632#endif
533 633
534/*****************************************************************************/ 634/*****************************************************************************/
535 635
536/* ECB_NO_THREADS - ecb is not used by multiple threads, ever */ 636/* ECB_NO_THREADS - ecb is not used by multiple threads, ever */
537/* ECB_NO_SMP - ecb might be used in multiple threads, but only on a single cpu */ 637/* ECB_NO_SMP - ecb might be used in multiple threads, but only on a single cpu */
538 638
539#if ECB_NO_THREADS || ECB_NO_SMP 639#if ECB_NO_THREADS
640 #define ECB_NO_SMP 1
641#endif
642
643#if ECB_NO_SMP
540 #define ECB_MEMORY_FENCE do { } while (0) 644 #define ECB_MEMORY_FENCE do { } while (0)
541#endif 645#endif
542 646
647/* http://www-01.ibm.com/support/knowledgecenter/SSGH3R_13.1.0/com.ibm.xlcpp131.aix.doc/compiler_ref/compiler_builtins.html */
648#if __xlC__ && ECB_CPP
649 #include <builtins.h>
650#endif
651
652#if 1400 <= _MSC_VER
653 #include <intrin.h> /* fence functions _ReadBarrier, also bit search functions _BitScanReverse */
654#endif
655
543#ifndef ECB_MEMORY_FENCE 656#ifndef ECB_MEMORY_FENCE
544 #if ECB_GCC_VERSION(2,5) || defined(__INTEL_COMPILER) || defined(__clang__) 657 #if ECB_GCC_VERSION(2,5) || defined __INTEL_COMPILER || (__llvm__ && __GNUC__) || __SUNPRO_C >= 0x5110 || __SUNPRO_CC >= 0x5110
545 #if __i386__ 658 #if __i386 || __i386__
546 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("lock; orb $0, -1(%%esp)" : : : "memory") 659 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("lock; orb $0, -1(%%esp)" : : : "memory")
547 #define ECB_MEMORY_FENCE_ACQUIRE ECB_MEMORY_FENCE /* non-lock xchg might be enough */ 660 #define ECB_MEMORY_FENCE_ACQUIRE __asm__ __volatile__ ("" : : : "memory")
548 #define ECB_MEMORY_FENCE_RELEASE do { } while (0) /* unlikely to change in future cpus */ 661 #define ECB_MEMORY_FENCE_RELEASE __asm__ __volatile__ ("")
549 #elif __amd64 662 #elif ECB_GCC_AMD64
550 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("mfence" : : : "memory") 663 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("mfence" : : : "memory")
551 #define ECB_MEMORY_FENCE_ACQUIRE __asm__ __volatile__ ("lfence" : : : "memory") 664 #define ECB_MEMORY_FENCE_ACQUIRE __asm__ __volatile__ ("" : : : "memory")
552 #define ECB_MEMORY_FENCE_RELEASE __asm__ __volatile__ ("sfence") /* play safe - not needed in any current cpu */ 665 #define ECB_MEMORY_FENCE_RELEASE __asm__ __volatile__ ("")
553 #elif __powerpc__ || __ppc__ || __powerpc64__ || __ppc64__ 666 #elif __powerpc__ || __ppc__ || __powerpc64__ || __ppc64__
554 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("sync" : : : "memory") 667 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("sync" : : : "memory")
668 #elif defined __ARM_ARCH_2__ \
669 || defined __ARM_ARCH_3__ || defined __ARM_ARCH_3M__ \
670 || defined __ARM_ARCH_4__ || defined __ARM_ARCH_4T__ \
671 || defined __ARM_ARCH_5__ || defined __ARM_ARCH_5E__ \
672 || defined __ARM_ARCH_5T__ || defined __ARM_ARCH_5TE__ \
673 || defined __ARM_ARCH_5TEJ__
674 /* should not need any, unless running old code on newer cpu - arm doesn't support that */
555 #elif defined(__ARM_ARCH_6__ ) || defined(__ARM_ARCH_6J__ ) \ 675 #elif defined __ARM_ARCH_6__ || defined __ARM_ARCH_6J__ \
556 || defined(__ARM_ARCH_6K__) || defined(__ARM_ARCH_6ZK__) 676 || defined __ARM_ARCH_6K__ || defined __ARM_ARCH_6ZK__ \
677 || defined __ARM_ARCH_6T2__
557 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("mcr p15,0,%0,c7,c10,5" : : "r" (0) : "memory") 678 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("mcr p15,0,%0,c7,c10,5" : : "r" (0) : "memory")
558 #elif defined(__ARM_ARCH_7__ ) || defined(__ARM_ARCH_7A__ ) \ 679 #elif defined __ARM_ARCH_7__ || defined __ARM_ARCH_7A__ \
559 || defined(__ARM_ARCH_7M__) || defined(__ARM_ARCH_7R__ ) 680 || defined __ARM_ARCH_7R__ || defined __ARM_ARCH_7M__
560 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("dmb" : : : "memory") 681 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("dmb" : : : "memory")
682 #elif __aarch64__
683 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("dmb ish" : : : "memory")
684 #elif (__sparc || __sparc__) && !(__sparc_v8__ || defined __sparcv8)
685 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("membar #LoadStore | #LoadLoad | #StoreStore | #StoreLoad" : : : "memory")
686 #define ECB_MEMORY_FENCE_ACQUIRE __asm__ __volatile__ ("membar #LoadStore | #LoadLoad" : : : "memory")
687 #define ECB_MEMORY_FENCE_RELEASE __asm__ __volatile__ ("membar #LoadStore | #StoreStore")
688 #elif defined __s390__ || defined __s390x__
689 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("bcr 15,0" : : : "memory")
690 #elif defined __mips__
691 /* GNU/Linux emulates sync on mips1 architectures, so we force its use */
692 /* anybody else who still uses mips1 is supposed to send in their version, with detection code. */
693 #define ECB_MEMORY_FENCE __asm__ __volatile__ (".set mips2; sync; .set mips0" : : : "memory")
694 #elif defined __alpha__
695 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("mb" : : : "memory")
696 #elif defined __hppa__
697 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("" : : : "memory")
698 #define ECB_MEMORY_FENCE_RELEASE __asm__ __volatile__ ("")
699 #elif defined __ia64__
700 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("mf" : : : "memory")
701 #elif defined __m68k__
702 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("" : : : "memory")
703 #elif defined __m88k__
704 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("tb1 0,%%r0,128" : : : "memory")
705 #elif defined __sh__
706 #define ECB_MEMORY_FENCE __asm__ __volatile__ ("" : : : "memory")
561 #endif 707 #endif
562 #endif 708 #endif
563#endif 709#endif
564 710
565#ifndef ECB_MEMORY_FENCE 711#ifndef ECB_MEMORY_FENCE
712 #if ECB_GCC_VERSION(4,7)
713 /* see comment below (stdatomic.h) about the C11 memory model. */
714 #define ECB_MEMORY_FENCE __atomic_thread_fence (__ATOMIC_SEQ_CST)
715 #define ECB_MEMORY_FENCE_ACQUIRE __atomic_thread_fence (__ATOMIC_ACQUIRE)
716 #define ECB_MEMORY_FENCE_RELEASE __atomic_thread_fence (__ATOMIC_RELEASE)
717
718 #elif ECB_CLANG_EXTENSION(c_atomic)
719 /* see comment below (stdatomic.h) about the C11 memory model. */
720 #define ECB_MEMORY_FENCE __c11_atomic_thread_fence (__ATOMIC_SEQ_CST)
721 #define ECB_MEMORY_FENCE_ACQUIRE __c11_atomic_thread_fence (__ATOMIC_ACQUIRE)
722 #define ECB_MEMORY_FENCE_RELEASE __c11_atomic_thread_fence (__ATOMIC_RELEASE)
723
566 #if ECB_GCC_VERSION(4,4) || defined(__INTEL_COMPILER) || defined(__clang__) 724 #elif ECB_GCC_VERSION(4,4) || defined __INTEL_COMPILER || defined __clang__
567 #define ECB_MEMORY_FENCE __sync_synchronize () 725 #define ECB_MEMORY_FENCE __sync_synchronize ()
568 /*#define ECB_MEMORY_FENCE_ACQUIRE ({ char dummy = 0; __sync_lock_test_and_set (&dummy, 1); }) */ 726 #elif _MSC_VER >= 1500 /* VC++ 2008 */
569 /*#define ECB_MEMORY_FENCE_RELEASE ({ char dummy = 1; __sync_lock_release (&dummy ); }) */ 727 /* apparently, microsoft broke all the memory barrier stuff in Visual Studio 2008... */
728 #pragma intrinsic(_ReadBarrier,_WriteBarrier,_ReadWriteBarrier)
729 #define ECB_MEMORY_FENCE _ReadWriteBarrier (); MemoryBarrier()
730 #define ECB_MEMORY_FENCE_ACQUIRE _ReadWriteBarrier (); MemoryBarrier() /* according to msdn, _ReadBarrier is not a load fence */
731 #define ECB_MEMORY_FENCE_RELEASE _WriteBarrier (); MemoryBarrier()
570 #elif _MSC_VER >= 1400 /* VC++ 2005 */ 732 #elif _MSC_VER >= 1400 /* VC++ 2005 */
571 #pragma intrinsic(_ReadBarrier,_WriteBarrier,_ReadWriteBarrier) 733 #pragma intrinsic(_ReadBarrier,_WriteBarrier,_ReadWriteBarrier)
572 #define ECB_MEMORY_FENCE _ReadWriteBarrier () 734 #define ECB_MEMORY_FENCE _ReadWriteBarrier ()
573 #define ECB_MEMORY_FENCE_ACQUIRE _ReadWriteBarrier () /* according to msdn, _ReadBarrier is not a load fence */ 735 #define ECB_MEMORY_FENCE_ACQUIRE _ReadWriteBarrier () /* according to msdn, _ReadBarrier is not a load fence */
574 #define ECB_MEMORY_FENCE_RELEASE _WriteBarrier () 736 #define ECB_MEMORY_FENCE_RELEASE _WriteBarrier ()
575 #elif defined(_WIN32) 737 #elif defined _WIN32
576 #include <WinNT.h> 738 #include <WinNT.h>
577 #define ECB_MEMORY_FENCE MemoryBarrier () /* actually just xchg on x86... scary */ 739 #define ECB_MEMORY_FENCE MemoryBarrier () /* actually just xchg on x86... scary */
740 #elif __SUNPRO_C >= 0x5110 || __SUNPRO_CC >= 0x5110
741 #include <mbarrier.h>
742 #define ECB_MEMORY_FENCE __machine_rw_barrier ()
743 #define ECB_MEMORY_FENCE_ACQUIRE __machine_r_barrier ()
744 #define ECB_MEMORY_FENCE_RELEASE __machine_w_barrier ()
745 #elif __xlC__
746 #define ECB_MEMORY_FENCE __sync ()
747 #endif
748#endif
749
750#ifndef ECB_MEMORY_FENCE
751 #if ECB_C11 && !defined __STDC_NO_ATOMICS__
752 /* we assume that these memory fences work on all variables/all memory accesses, */
753 /* not just C11 atomics and atomic accesses */
754 #include <stdatomic.h>
755 /* Unfortunately, neither gcc 4.7 nor clang 3.1 generate any instructions for */
756 /* any fence other than seq_cst, which isn't very efficient for us. */
757 /* Why that is, we don't know - either the C11 memory model is quite useless */
758 /* for most usages, or gcc and clang have a bug */
759 /* I *currently* lean towards the latter, and inefficiently implement */
760 /* all three of ecb's fences as a seq_cst fence */
761 /* Update, gcc-4.8 generates mfence for all c++ fences, but nothing */
762 /* for all __atomic_thread_fence's except seq_cst */
763 #define ECB_MEMORY_FENCE atomic_thread_fence (memory_order_seq_cst)
578 #endif 764 #endif
579#endif 765#endif
580 766
581#ifndef ECB_MEMORY_FENCE 767#ifndef ECB_MEMORY_FENCE
582 #if !ECB_AVOID_PTHREADS 768 #if !ECB_AVOID_PTHREADS
… …
594 static pthread_mutex_t ecb_mf_lock = PTHREAD_MUTEX_INITIALIZER; 780 static pthread_mutex_t ecb_mf_lock = PTHREAD_MUTEX_INITIALIZER;
595 #define ECB_MEMORY_FENCE do { pthread_mutex_lock (&ecb_mf_lock); pthread_mutex_unlock (&ecb_mf_lock); } while (0) 781 #define ECB_MEMORY_FENCE do { pthread_mutex_lock (&ecb_mf_lock); pthread_mutex_unlock (&ecb_mf_lock); } while (0)
596 #endif 782 #endif
597#endif 783#endif
598 784
599#if !defined(ECB_MEMORY_FENCE_ACQUIRE) && defined(ECB_MEMORY_FENCE) 785#if !defined ECB_MEMORY_FENCE_ACQUIRE && defined ECB_MEMORY_FENCE
600 #define ECB_MEMORY_FENCE_ACQUIRE ECB_MEMORY_FENCE 786 #define ECB_MEMORY_FENCE_ACQUIRE ECB_MEMORY_FENCE
601#endif 787#endif
602 788
603#if !defined(ECB_MEMORY_FENCE_RELEASE) && defined(ECB_MEMORY_FENCE) 789#if !defined ECB_MEMORY_FENCE_RELEASE && defined ECB_MEMORY_FENCE
604 #define ECB_MEMORY_FENCE_RELEASE ECB_MEMORY_FENCE 790 #define ECB_MEMORY_FENCE_RELEASE ECB_MEMORY_FENCE
605#endif 791#endif
606 792
607/*****************************************************************************/ 793/*****************************************************************************/
608 794
609#define ECB_C99 (__STDC_VERSION__ >= 199901L) 795#if ECB_CPP
610
611#if __cplusplus
612 #define ecb_inline static inline 796 #define ecb_inline static inline
613#elif ECB_GCC_VERSION(2,5) 797#elif ECB_GCC_VERSION(2,5)
614 #define ecb_inline static __inline__ 798 #define ecb_inline static __inline__
615#elif ECB_C99 799#elif ECB_C99
616 #define ecb_inline static inline 800 #define ecb_inline static inline
… …
630 814
631#define ECB_CONCAT_(a, b) a ## b 815#define ECB_CONCAT_(a, b) a ## b
632#define ECB_CONCAT(a, b) ECB_CONCAT_(a, b) 816#define ECB_CONCAT(a, b) ECB_CONCAT_(a, b)
633#define ECB_STRINGIFY_(a) # a 817#define ECB_STRINGIFY_(a) # a
634#define ECB_STRINGIFY(a) ECB_STRINGIFY_(a) 818#define ECB_STRINGIFY(a) ECB_STRINGIFY_(a)
819#define ECB_STRINGIFY_EXPR(expr) ((expr), ECB_STRINGIFY_ (expr))
635 820
636#define ecb_function_ ecb_inline 821#define ecb_function_ ecb_inline
637 822
638#if ECB_GCC_VERSION(3,1) 823#if ECB_GCC_VERSION(3,1) || ECB_CLANG_VERSION(2,8)
639 #define ecb_attribute(attrlist) __attribute__(attrlist) 824 #define ecb_attribute(attrlist) __attribute__ (attrlist)
825#else
826 #define ecb_attribute(attrlist)
827#endif
828
829#if ECB_GCC_VERSION(3,1) || ECB_CLANG_BUILTIN(__builtin_constant_p)
640 #define ecb_is_constant(expr) __builtin_constant_p (expr) 830 #define ecb_is_constant(expr) __builtin_constant_p (expr)
831#else
832 /* possible C11 impl for integral types
833 typedef struct ecb_is_constant_struct ecb_is_constant_struct;
834 #define ecb_is_constant(expr) _Generic ((1 ? (struct ecb_is_constant_struct *)0 : (void *)((expr) - (expr)), ecb_is_constant_struct *: 0, default: 1)) */
835
836 #define ecb_is_constant(expr) 0
837#endif
838
839#if ECB_GCC_VERSION(3,1) || ECB_CLANG_BUILTIN(__builtin_expect)
641 #define ecb_expect(expr,value) __builtin_expect ((expr),(value)) 840 #define ecb_expect(expr,value) __builtin_expect ((expr),(value))
841#else
842 #define ecb_expect(expr,value) (expr)
843#endif
844
845#if ECB_GCC_VERSION(3,1) || ECB_CLANG_BUILTIN(__builtin_prefetch)
642 #define ecb_prefetch(addr,rw,locality) __builtin_prefetch (addr, rw, locality) 846 #define ecb_prefetch(addr,rw,locality) __builtin_prefetch (addr, rw, locality)
643#else 847#else
644 #define ecb_attribute(attrlist)
645 #define ecb_is_constant(expr) 0
646 #define ecb_expect(expr,value) (expr)
647 #define ecb_prefetch(addr,rw,locality) 848 #define ecb_prefetch(addr,rw,locality)
648#endif 849#endif
649 850
650/* no emulation for ecb_decltype */ 851/* no emulation for ecb_decltype */
651#if ECB_GCC_VERSION(4,5) 852#if ECB_CPP11
853 // older implementations might have problems with decltype(x)::type, work around it
854 template<class T> struct ecb_decltype_t { typedef T type; };
652 #define ecb_decltype(x) __decltype(x) 855 #define ecb_decltype(x) ecb_decltype_t<decltype (x)>::type
653#elif ECB_GCC_VERSION(3,0) 856#elif ECB_GCC_VERSION(3,0) || ECB_CLANG_VERSION(2,8)
654 #define ecb_decltype(x) __typeof(x) 857 #define ecb_decltype(x) __typeof__ (x)
655#endif 858#endif
656 859
860#if _MSC_VER >= 1300
861 #define ecb_deprecated __declspec (deprecated)
862#else
863 #define ecb_deprecated ecb_attribute ((__deprecated__))
864#endif
865
866#if _MSC_VER >= 1500
867 #define ecb_deprecated_message(msg) __declspec (deprecated (msg))
868#elif ECB_GCC_VERSION(4,5)
869 #define ecb_deprecated_message(msg) ecb_attribute ((__deprecated__ (msg))
870#else
871 #define ecb_deprecated_message(msg) ecb_deprecated
872#endif
873
874#if _MSC_VER >= 1400
875 #define ecb_noinline __declspec (noinline)
876#else
657#define ecb_noinline ecb_attribute ((__noinline__)) 877 #define ecb_noinline ecb_attribute ((__noinline__))
658#define ecb_noreturn ecb_attribute ((__noreturn__)) 878#endif
879
659#define ecb_unused ecb_attribute ((__unused__)) 880#define ecb_unused ecb_attribute ((__unused__))
660#define ecb_const ecb_attribute ((__const__)) 881#define ecb_const ecb_attribute ((__const__))
661#define ecb_pure ecb_attribute ((__pure__)) 882#define ecb_pure ecb_attribute ((__pure__))
883
884#if ECB_C11 || __IBMC_NORETURN
885 /* http://www-01.ibm.com/support/knowledgecenter/SSGH3R_13.1.0/com.ibm.xlcpp131.aix.doc/language_ref/noreturn.html */
886 #define ecb_noreturn _Noreturn
887#elif ECB_CPP11
888 #define ecb_noreturn [[noreturn]]
889#elif _MSC_VER >= 1200
890 /* http://msdn.microsoft.com/en-us/library/k6ktzx3s.aspx */
891 #define ecb_noreturn __declspec (noreturn)
892#else
893 #define ecb_noreturn ecb_attribute ((__noreturn__))
894#endif
662 895
663#if ECB_GCC_VERSION(4,3) 896#if ECB_GCC_VERSION(4,3)
664 #define ecb_artificial ecb_attribute ((__artificial__)) 897 #define ecb_artificial ecb_attribute ((__artificial__))
665 #define ecb_hot ecb_attribute ((__hot__)) 898 #define ecb_hot ecb_attribute ((__hot__))
666 #define ecb_cold ecb_attribute ((__cold__)) 899 #define ecb_cold ecb_attribute ((__cold__))
… …
678/* for compatibility to the rest of the world */ 911/* for compatibility to the rest of the world */
679#define ecb_likely(expr) ecb_expect_true (expr) 912#define ecb_likely(expr) ecb_expect_true (expr)
680#define ecb_unlikely(expr) ecb_expect_false (expr) 913#define ecb_unlikely(expr) ecb_expect_false (expr)
681 914
682/* count trailing zero bits and count # of one bits */ 915/* count trailing zero bits and count # of one bits */
683#if ECB_GCC_VERSION(3,4) 916#if ECB_GCC_VERSION(3,4) \
917 || (ECB_CLANG_BUILTIN(__builtin_clz) && ECB_CLANG_BUILTIN(__builtin_clzll) \
918 && ECB_CLANG_BUILTIN(__builtin_ctz) && ECB_CLANG_BUILTIN(__builtin_ctzll) \
919 && ECB_CLANG_BUILTIN(__builtin_popcount))
684 /* we assume int == 32 bit, long == 32 or 64 bit and long long == 64 bit */ 920 /* we assume int == 32 bit, long == 32 or 64 bit and long long == 64 bit */
685 #define ecb_ld32(x) (__builtin_clz (x) ^ 31) 921 #define ecb_ld32(x) (__builtin_clz (x) ^ 31)
686 #define ecb_ld64(x) (__builtin_clzll (x) ^ 63) 922 #define ecb_ld64(x) (__builtin_clzll (x) ^ 63)
687 #define ecb_ctz32(x) __builtin_ctz (x) 923 #define ecb_ctz32(x) __builtin_ctz (x)
688 #define ecb_ctz64(x) __builtin_ctzll (x) 924 #define ecb_ctz64(x) __builtin_ctzll (x)
689 #define ecb_popcount32(x) __builtin_popcount (x) 925 #define ecb_popcount32(x) __builtin_popcount (x)
690 /* no popcountll */ 926 /* no popcountll */
691#else 927#else
692 ecb_function_ int ecb_ctz32 (uint32_t x) ecb_const; 928 ecb_function_ ecb_const int ecb_ctz32 (uint32_t x);
693 ecb_function_ int 929 ecb_function_ ecb_const int
694 ecb_ctz32 (uint32_t x) 930 ecb_ctz32 (uint32_t x)
695 { 931 {
932#if 1400 <= _MSC_VER && (_M_IX86 || _M_X64 || _M_IA64 || _M_ARM)
933 unsigned long r;
934 _BitScanForward (&r, x);
935 return (int)r;
936#else
696 int r = 0; 937 int r = 0;
697 938
698 x &= ~x + 1; /* this isolates the lowest bit */ 939 x &= ~x + 1; /* this isolates the lowest bit */
699 940
700#if ECB_branchless_on_i386 941#if ECB_branchless_on_i386
… …
710 if (x & 0xff00ff00) r += 8; 951 if (x & 0xff00ff00) r += 8;
711 if (x & 0xffff0000) r += 16; 952 if (x & 0xffff0000) r += 16;
712#endif 953#endif
713 954
714 return r; 955 return r;
956#endif
715 } 957 }
716 958
717 ecb_function_ int ecb_ctz64 (uint64_t x) ecb_const; 959 ecb_function_ ecb_const int ecb_ctz64 (uint64_t x);
718 ecb_function_ int 960 ecb_function_ ecb_const int
719 ecb_ctz64 (uint64_t x) 961 ecb_ctz64 (uint64_t x)
720 { 962 {
963#if 1400 <= _MSC_VER && (_M_X64 || _M_IA64 || _M_ARM)
964 unsigned long r;
965 _BitScanForward64 (&r, x);
966 return (int)r;
967#else
721 int shift = x & 0xffffffffU ? 0 : 32; 968 int shift = x & 0xffffffff ? 0 : 32;
722 return ecb_ctz32 (x >> shift) + shift; 969 return ecb_ctz32 (x >> shift) + shift;
970#endif
723 } 971 }
724 972
725 ecb_function_ int ecb_popcount32 (uint32_t x) ecb_const; 973 ecb_function_ ecb_const int ecb_popcount32 (uint32_t x);
726 ecb_function_ int 974 ecb_function_ ecb_const int
727 ecb_popcount32 (uint32_t x) 975 ecb_popcount32 (uint32_t x)
728 { 976 {
729 x -= (x >> 1) & 0x55555555; 977 x -= (x >> 1) & 0x55555555;
730 x = ((x >> 2) & 0x33333333) + (x & 0x33333333); 978 x = ((x >> 2) & 0x33333333) + (x & 0x33333333);
731 x = ((x >> 4) + x) & 0x0f0f0f0f; 979 x = ((x >> 4) + x) & 0x0f0f0f0f;
732 x *= 0x01010101; 980 x *= 0x01010101;
733 981
734 return x >> 24; 982 return x >> 24;
735 } 983 }
736 984
737 ecb_function_ int ecb_ld32 (uint32_t x) ecb_const; 985 ecb_function_ ecb_const int ecb_ld32 (uint32_t x);
738 ecb_function_ int ecb_ld32 (uint32_t x) 986 ecb_function_ ecb_const int ecb_ld32 (uint32_t x)
739 { 987 {
988#if 1400 <= _MSC_VER && (_M_IX86 || _M_X64 || _M_IA64 || _M_ARM)
989 unsigned long r;
990 _BitScanReverse (&r, x);
991 return (int)r;
992#else
740 int r = 0; 993 int r = 0;
741 994
742 if (x >> 16) { x >>= 16; r += 16; } 995 if (x >> 16) { x >>= 16; r += 16; }
743 if (x >> 8) { x >>= 8; r += 8; } 996 if (x >> 8) { x >>= 8; r += 8; }
744 if (x >> 4) { x >>= 4; r += 4; } 997 if (x >> 4) { x >>= 4; r += 4; }
745 if (x >> 2) { x >>= 2; r += 2; } 998 if (x >> 2) { x >>= 2; r += 2; }
746 if (x >> 1) { r += 1; } 999 if (x >> 1) { r += 1; }
747 1000
748 return r; 1001 return r;
1002#endif
749 } 1003 }
750 1004
751 ecb_function_ int ecb_ld64 (uint64_t x) ecb_const; 1005 ecb_function_ ecb_const int ecb_ld64 (uint64_t x);
752 ecb_function_ int ecb_ld64 (uint64_t x) 1006 ecb_function_ ecb_const int ecb_ld64 (uint64_t x)
753 { 1007 {
1008#if 1400 <= _MSC_VER && (_M_X64 || _M_IA64 || _M_ARM)
1009 unsigned long r;
1010 _BitScanReverse64 (&r, x);
1011 return (int)r;
1012#else
754 int r = 0; 1013 int r = 0;
755 1014
756 if (x >> 32) { x >>= 32; r += 32; } 1015 if (x >> 32) { x >>= 32; r += 32; }
757 1016
758 return r + ecb_ld32 (x); 1017 return r + ecb_ld32 (x);
1018#endif
759 } 1019 }
760#endif 1020#endif
1021
1022ecb_function_ ecb_const ecb_bool ecb_is_pot32 (uint32_t x);
1023ecb_function_ ecb_const ecb_bool ecb_is_pot32 (uint32_t x) { return !(x & (x - 1)); }
1024ecb_function_ ecb_const ecb_bool ecb_is_pot64 (uint64_t x);
1025ecb_function_ ecb_const ecb_bool ecb_is_pot64 (uint64_t x) { return !(x & (x - 1)); }
1026
1027ecb_function_ ecb_const uint8_t ecb_bitrev8 (uint8_t x);
1028ecb_function_ ecb_const uint8_t ecb_bitrev8 (uint8_t x)
1029{
1030 return ( (x * 0x0802U & 0x22110U)
1031 | (x * 0x8020U & 0x88440U)) * 0x10101U >> 16;
1032}
1033
1034ecb_function_ ecb_const uint16_t ecb_bitrev16 (uint16_t x);
1035ecb_function_ ecb_const uint16_t ecb_bitrev16 (uint16_t x)
1036{
1037 x = ((x >> 1) & 0x5555) | ((x & 0x5555) << 1);
1038 x = ((x >> 2) & 0x3333) | ((x & 0x3333) << 2);
1039 x = ((x >> 4) & 0x0f0f) | ((x & 0x0f0f) << 4);
1040 x = ( x >> 8 ) | ( x << 8);
1041
1042 return x;
1043}
1044
1045ecb_function_ ecb_const uint32_t ecb_bitrev32 (uint32_t x);
1046ecb_function_ ecb_const uint32_t ecb_bitrev32 (uint32_t x)
1047{
1048 x = ((x >> 1) & 0x55555555) | ((x & 0x55555555) << 1);
1049 x = ((x >> 2) & 0x33333333) | ((x & 0x33333333) << 2);
1050 x = ((x >> 4) & 0x0f0f0f0f) | ((x & 0x0f0f0f0f) << 4);
1051 x = ((x >> 8) & 0x00ff00ff) | ((x & 0x00ff00ff) << 8);
1052 x = ( x >> 16 ) | ( x << 16);
1053
1054 return x;
1055}
761 1056
762/* popcount64 is only available on 64 bit cpus as gcc builtin */ 1057/* popcount64 is only available on 64 bit cpus as gcc builtin */
763/* so for this version we are lazy */ 1058/* so for this version we are lazy */
764ecb_function_ int ecb_popcount64 (uint64_t x) ecb_const; 1059ecb_function_ ecb_const int ecb_popcount64 (uint64_t x);
765ecb_function_ int 1060ecb_function_ ecb_const int
766ecb_popcount64 (uint64_t x) 1061ecb_popcount64 (uint64_t x)
767{ 1062{
768 return ecb_popcount32 (x) + ecb_popcount32 (x >> 32); 1063 return ecb_popcount32 (x) + ecb_popcount32 (x >> 32);
769} 1064}
770 1065
771ecb_inline uint8_t ecb_rotl8 (uint8_t x, unsigned int count) ecb_const; 1066ecb_inline ecb_const uint8_t ecb_rotl8 (uint8_t x, unsigned int count);
772ecb_inline uint8_t ecb_rotr8 (uint8_t x, unsigned int count) ecb_const; 1067ecb_inline ecb_const uint8_t ecb_rotr8 (uint8_t x, unsigned int count);
773ecb_inline uint16_t ecb_rotl16 (uint16_t x, unsigned int count) ecb_const; 1068ecb_inline ecb_const uint16_t ecb_rotl16 (uint16_t x, unsigned int count);
774ecb_inline uint16_t ecb_rotr16 (uint16_t x, unsigned int count) ecb_const; 1069ecb_inline ecb_const uint16_t ecb_rotr16 (uint16_t x, unsigned int count);
775ecb_inline uint32_t ecb_rotl32 (uint32_t x, unsigned int count) ecb_const; 1070ecb_inline ecb_const uint32_t ecb_rotl32 (uint32_t x, unsigned int count);
776ecb_inline uint32_t ecb_rotr32 (uint32_t x, unsigned int count) ecb_const; 1071ecb_inline ecb_const uint32_t ecb_rotr32 (uint32_t x, unsigned int count);
777ecb_inline uint64_t ecb_rotl64 (uint64_t x, unsigned int count) ecb_const; 1072ecb_inline ecb_const uint64_t ecb_rotl64 (uint64_t x, unsigned int count);
778ecb_inline uint64_t ecb_rotr64 (uint64_t x, unsigned int count) ecb_const; 1073ecb_inline ecb_const uint64_t ecb_rotr64 (uint64_t x, unsigned int count);
779 1074
780ecb_inline uint8_t ecb_rotl8 (uint8_t x, unsigned int count) { return (x >> ( 8 - count)) | (x << count); } 1075ecb_inline ecb_const uint8_t ecb_rotl8 (uint8_t x, unsigned int count) { return (x >> ( 8 - count)) | (x << count); }
781ecb_inline uint8_t ecb_rotr8 (uint8_t x, unsigned int count) { return (x << ( 8 - count)) | (x >> count); } 1076ecb_inline ecb_const uint8_t ecb_rotr8 (uint8_t x, unsigned int count) { return (x << ( 8 - count)) | (x >> count); }
782ecb_inline uint16_t ecb_rotl16 (uint16_t x, unsigned int count) { return (x >> (16 - count)) | (x << count); } 1077ecb_inline ecb_const uint16_t ecb_rotl16 (uint16_t x, unsigned int count) { return (x >> (16 - count)) | (x << count); }
783ecb_inline uint16_t ecb_rotr16 (uint16_t x, unsigned int count) { return (x << (16 - count)) | (x >> count); } 1078ecb_inline ecb_const uint16_t ecb_rotr16 (uint16_t x, unsigned int count) { return (x << (16 - count)) | (x >> count); }
784ecb_inline uint32_t ecb_rotl32 (uint32_t x, unsigned int count) { return (x >> (32 - count)) | (x << count); } 1079ecb_inline ecb_const uint32_t ecb_rotl32 (uint32_t x, unsigned int count) { return (x >> (32 - count)) | (x << count); }
785ecb_inline uint32_t ecb_rotr32 (uint32_t x, unsigned int count) { return (x << (32 - count)) | (x >> count); } 1080ecb_inline ecb_const uint32_t ecb_rotr32 (uint32_t x, unsigned int count) { return (x << (32 - count)) | (x >> count); }
786ecb_inline uint64_t ecb_rotl64 (uint64_t x, unsigned int count) { return (x >> (64 - count)) | (x << count); } 1081ecb_inline ecb_const uint64_t ecb_rotl64 (uint64_t x, unsigned int count) { return (x >> (64 - count)) | (x << count); }
787ecb_inline uint64_t ecb_rotr64 (uint64_t x, unsigned int count) { return (x << (64 - count)) | (x >> count); } 1082ecb_inline ecb_const uint64_t ecb_rotr64 (uint64_t x, unsigned int count) { return (x << (64 - count)) | (x >> count); }
788 1083
789#if ECB_GCC_VERSION(4,3) 1084#if ECB_GCC_VERSION(4,3) || (ECB_CLANG_BUILTIN(__builtin_bswap32) && ECB_CLANG_BUILTIN(__builtin_bswap64))
1085 #if ECB_GCC_VERSION(4,8) || ECB_CLANG_BUILTIN(__builtin_bswap16)
1086 #define ecb_bswap16(x) __builtin_bswap16 (x)
1087 #else
790 #define ecb_bswap16(x) (__builtin_bswap32 (x) >> 16) 1088 #define ecb_bswap16(x) (__builtin_bswap32 (x) >> 16)
1089 #endif
791 #define ecb_bswap32(x) __builtin_bswap32 (x) 1090 #define ecb_bswap32(x) __builtin_bswap32 (x)
792 #define ecb_bswap64(x) __builtin_bswap64 (x) 1091 #define ecb_bswap64(x) __builtin_bswap64 (x)
1092#elif _MSC_VER
1093 #include <stdlib.h>
1094 #define ecb_bswap16(x) ((uint16_t)_byteswap_ushort ((uint16_t)(x)))
1095 #define ecb_bswap32(x) ((uint32_t)_byteswap_ulong ((uint32_t)(x)))
1096 #define ecb_bswap64(x) ((uint64_t)_byteswap_uint64 ((uint64_t)(x)))
793#else 1097#else
794 ecb_function_ uint16_t ecb_bswap16 (uint16_t x) ecb_const; 1098 ecb_function_ ecb_const uint16_t ecb_bswap16 (uint16_t x);
795 ecb_function_ uint16_t 1099 ecb_function_ ecb_const uint16_t
796 ecb_bswap16 (uint16_t x) 1100 ecb_bswap16 (uint16_t x)
797 { 1101 {
798 return ecb_rotl16 (x, 8); 1102 return ecb_rotl16 (x, 8);
799 } 1103 }
800 1104
801 ecb_function_ uint32_t ecb_bswap32 (uint32_t x) ecb_const; 1105 ecb_function_ ecb_const uint32_t ecb_bswap32 (uint32_t x);
802 ecb_function_ uint32_t 1106 ecb_function_ ecb_const uint32_t
803 ecb_bswap32 (uint32_t x) 1107 ecb_bswap32 (uint32_t x)
804 { 1108 {
805 return (((uint32_t)ecb_bswap16 (x)) << 16) | ecb_bswap16 (x >> 16); 1109 return (((uint32_t)ecb_bswap16 (x)) << 16) | ecb_bswap16 (x >> 16);
806 } 1110 }
807 1111
808 ecb_function_ uint64_t ecb_bswap64 (uint64_t x) ecb_const; 1112 ecb_function_ ecb_const uint64_t ecb_bswap64 (uint64_t x);
809 ecb_function_ uint64_t 1113 ecb_function_ ecb_const uint64_t
810 ecb_bswap64 (uint64_t x) 1114 ecb_bswap64 (uint64_t x)
811 { 1115 {
812 return (((uint64_t)ecb_bswap32 (x)) << 32) | ecb_bswap32 (x >> 32); 1116 return (((uint64_t)ecb_bswap32 (x)) << 32) | ecb_bswap32 (x >> 32);
813 } 1117 }
814#endif 1118#endif
815 1119
816#if ECB_GCC_VERSION(4,5) 1120#if ECB_GCC_VERSION(4,5) || ECB_CLANG_BUILTIN(__builtin_unreachable)
817 #define ecb_unreachable() __builtin_unreachable () 1121 #define ecb_unreachable() __builtin_unreachable ()
818#else 1122#else
819 /* this seems to work fine, but gcc always emits a warning for it :/ */ 1123 /* this seems to work fine, but gcc always emits a warning for it :/ */
820 ecb_function_ void ecb_unreachable (void) ecb_noreturn; 1124 ecb_inline ecb_noreturn void ecb_unreachable (void);
821 ecb_function_ void ecb_unreachable (void) { } 1125 ecb_inline ecb_noreturn void ecb_unreachable (void) { }
822#endif 1126#endif
823 1127
824/* try to tell the compiler that some condition is definitely true */ 1128/* try to tell the compiler that some condition is definitely true */
825#define ecb_assume(cond) do { if (!(cond)) ecb_unreachable (); } while (0) 1129#define ecb_assume(cond) if (!(cond)) ecb_unreachable (); else 0
826 1130
827ecb_function_ unsigned char ecb_byteorder_helper (void) ecb_const; 1131ecb_inline ecb_const uint32_t ecb_byteorder_helper (void);
828ecb_function_ unsigned char 1132ecb_inline ecb_const uint32_t
829ecb_byteorder_helper (void) 1133ecb_byteorder_helper (void)
830{ 1134{
831 const uint32_t u = 0x11223344; 1135 /* the union code still generates code under pressure in gcc, */
832 return *(unsigned char *)&u; 1136 /* but less than using pointers, and always seems to */
1137 /* successfully return a constant. */
1138 /* the reason why we have this horrible preprocessor mess */
1139 /* is to avoid it in all cases, at least on common architectures */
1140 /* or when using a recent enough gcc version (>= 4.6) */
1141#if (defined __BYTE_ORDER__ && __BYTE_ORDER__ == __ORDER_LITTLE_ENDIAN__) \
1142 || ((__i386 || __i386__ || _M_IX86 || ECB_GCC_AMD64 || ECB_MSVC_AMD64) && !__VOS__)
1143 #define ECB_LITTLE_ENDIAN 1
1144 return 0x44332211;
1145#elif (defined __BYTE_ORDER__ && __BYTE_ORDER__ == __ORDER_BIG_ENDIAN__) \
1146 || ((__AARCH64EB__ || __MIPSEB__ || __ARMEB__) && !__VOS__)
1147 #define ECB_BIG_ENDIAN 1
1148 return 0x11223344;
1149#else
1150 union
1151 {
1152 uint8_t c[4];
1153 uint32_t u;
1154 } u = { 0x11, 0x22, 0x33, 0x44 };
1155 return u.u;
1156#endif
833} 1157}
834 1158
835ecb_function_ ecb_bool ecb_big_endian (void) ecb_const; 1159ecb_inline ecb_const ecb_bool ecb_big_endian (void);
836ecb_function_ ecb_bool ecb_big_endian (void) { return ecb_byteorder_helper () == 0x11; } 1160ecb_inline ecb_const ecb_bool ecb_big_endian (void) { return ecb_byteorder_helper () == 0x11223344; }
837ecb_function_ ecb_bool ecb_little_endian (void) ecb_const; 1161ecb_inline ecb_const ecb_bool ecb_little_endian (void);
838ecb_function_ ecb_bool ecb_little_endian (void) { return ecb_byteorder_helper () == 0x44; } 1162ecb_inline ecb_const ecb_bool ecb_little_endian (void) { return ecb_byteorder_helper () == 0x44332211; }
839 1163
840#if ECB_GCC_VERSION(3,0) || ECB_C99 1164#if ECB_GCC_VERSION(3,0) || ECB_C99
841 #define ecb_mod(m,n) ((m) % (n) + ((m) % (n) < 0 ? (n) : 0)) 1165 #define ecb_mod(m,n) ((m) % (n) + ((m) % (n) < 0 ? (n) : 0))
842#else 1166#else
843 #define ecb_mod(m,n) ((m) < 0 ? ((n) - 1 - ((-1 - (m)) % (n))) : ((m) % (n))) 1167 #define ecb_mod(m,n) ((m) < 0 ? ((n) - 1 - ((-1 - (m)) % (n))) : ((m) % (n)))
844#endif 1168#endif
845 1169
846#if __cplusplus 1170#if ECB_CPP
847 template<typename T> 1171 template<typename T>
848 static inline T ecb_div_rd (T val, T div) 1172 static inline T ecb_div_rd (T val, T div)
849 { 1173 {
850 return val < 0 ? - ((-val + div - 1) / div) : (val ) / div; 1174 return val < 0 ? - ((-val + div - 1) / div) : (val ) / div;
851 } 1175 }
… …
868 } 1192 }
869#else 1193#else
870 #define ecb_array_length(name) (sizeof (name) / sizeof (name [0])) 1194 #define ecb_array_length(name) (sizeof (name) / sizeof (name [0]))
871#endif 1195#endif
872 1196
1197ecb_function_ ecb_const uint32_t ecb_binary16_to_binary32 (uint32_t x);
1198ecb_function_ ecb_const uint32_t
1199ecb_binary16_to_binary32 (uint32_t x)
1200{
1201 unsigned int s = (x & 0x8000) << (31 - 15);
1202 int e = (x >> 10) & 0x001f;
1203 unsigned int m = x & 0x03ff;
1204
1205 if (ecb_expect_false (e == 31))
1206 /* infinity or NaN */
1207 e = 255 - (127 - 15);
1208 else if (ecb_expect_false (!e))
1209 {
1210 if (ecb_expect_true (!m))
1211 /* zero, handled by code below by forcing e to 0 */
1212 e = 0 - (127 - 15);
1213 else
1214 {
1215 /* subnormal, renormalise */
1216 unsigned int s = 10 - ecb_ld32 (m);
1217
1218 m = (m << s) & 0x3ff; /* mask implicit bit */
1219 e -= s - 1;
1220 }
1221 }
1222
1223 /* e and m now are normalised, or zero, (or inf or nan) */
1224 e += 127 - 15;
1225
1226 return s | (e << 23) | (m << (23 - 10));
1227}
1228
1229ecb_function_ ecb_const uint16_t ecb_binary32_to_binary16 (uint32_t x);
1230ecb_function_ ecb_const uint16_t
1231ecb_binary32_to_binary16 (uint32_t x)
1232{
1233 unsigned int s = (x >> 16) & 0x00008000; /* sign bit, the easy part */
1234 unsigned int e = ((x >> 23) & 0x000000ff) - (127 - 15); /* the desired exponent */
1235 unsigned int m = x & 0x007fffff;
1236
1237 x &= 0x7fffffff;
1238
1239 /* if it's within range of binary16 normals, use fast path */
1240 if (ecb_expect_true (0x38800000 <= x && x <= 0x477fefff))
1241 {
1242 /* mantissa round-to-even */
1243 m += 0x00000fff + ((m >> (23 - 10)) & 1);
1244
1245 /* handle overflow */
1246 if (ecb_expect_false (m >= 0x00800000))
1247 {
1248 m >>= 1;
1249 e += 1;
1250 }
1251
1252 return s | (e << 10) | (m >> (23 - 10));
1253 }
1254
1255 /* handle large numbers and infinity */
1256 if (ecb_expect_true (0x477fefff < x && x <= 0x7f800000))
1257 return s | 0x7c00;
1258
1259 /* handle zero, subnormals and small numbers */
1260 if (ecb_expect_true (x < 0x38800000))
1261 {
1262 /* zero */
1263 if (ecb_expect_true (!x))
1264 return s;
1265
1266 /* handle subnormals */
1267
1268 /* too small, will be zero */
1269 if (e < (14 - 24)) /* might not be sharp, but is good enough */
1270 return s;
1271
1272 m |= 0x00800000; /* make implicit bit explicit */
1273
1274 /* very tricky - we need to round to the nearest e (+10) bit value */
1275 {
1276 unsigned int bits = 14 - e;
1277 unsigned int half = (1 << (bits - 1)) - 1;
1278 unsigned int even = (m >> bits) & 1;
1279
1280 /* if this overflows, we will end up with a normalised number */
1281 m = (m + half + even) >> bits;
1282 }
1283
1284 return s | m;
1285 }
1286
1287 /* handle NaNs, preserve leftmost nan bits, but make sure we don't turn them into infinities */
1288 m >>= 13;
1289
1290 return s | 0x7c00 | m | !m;
1291}
1292
1293/*******************************************************************************/
1294/* floating point stuff, can be disabled by defining ECB_NO_LIBM */
1295
1296/* basically, everything uses "ieee pure-endian" floating point numbers */
1297/* the only noteworthy exception is ancient armle, which uses order 43218765 */
1298#if 0 \
1299 || __i386 || __i386__ \
1300 || ECB_GCC_AMD64 \
1301 || __powerpc__ || __ppc__ || __powerpc64__ || __ppc64__ \
1302 || defined __s390__ || defined __s390x__ \
1303 || defined __mips__ \
1304 || defined __alpha__ \
1305 || defined __hppa__ \
1306 || defined __ia64__ \
1307 || defined __m68k__ \
1308 || defined __m88k__ \
1309 || defined __sh__ \
1310 || defined _M_IX86 || defined ECB_MSVC_AMD64 || defined _M_IA64 \
1311 || (defined __arm__ && (defined __ARM_EABI__ || defined __EABI__ || defined __VFP_FP__ || defined _WIN32_WCE || defined __ANDROID__)) \
1312 || defined __aarch64__
1313 #define ECB_STDFP 1
1314 #include <string.h> /* for memcpy */
1315#else
1316 #define ECB_STDFP 0
1317#endif
1318
1319#ifndef ECB_NO_LIBM
1320
1321 #include <math.h> /* for frexp*, ldexp*, INFINITY, NAN */
1322
1323 /* only the oldest of old doesn't have this one. solaris. */
1324 #ifdef INFINITY
1325 #define ECB_INFINITY INFINITY
1326 #else
1327 #define ECB_INFINITY HUGE_VAL
1328 #endif
1329
1330 #ifdef NAN
1331 #define ECB_NAN NAN
1332 #else
1333 #define ECB_NAN ECB_INFINITY
1334 #endif
1335
1336 #if ECB_C99 || _XOPEN_VERSION >= 600 || _POSIX_VERSION >= 200112L
1337 #define ecb_ldexpf(x,e) ldexpf ((x), (e))
1338 #define ecb_frexpf(x,e) frexpf ((x), (e))
1339 #else
1340 #define ecb_ldexpf(x,e) (float) ldexp ((double) (x), (e))
1341 #define ecb_frexpf(x,e) (float) frexp ((double) (x), (e))
1342 #endif
1343
1344 /* convert a float to ieee single/binary32 */
1345 ecb_function_ ecb_const uint32_t ecb_float_to_binary32 (float x);
1346 ecb_function_ ecb_const uint32_t
1347 ecb_float_to_binary32 (float x)
1348 {
1349 uint32_t r;
1350
1351 #if ECB_STDFP
1352 memcpy (&r, &x, 4);
1353 #else
1354 /* slow emulation, works for anything but -0 */
1355 uint32_t m;
1356 int e;
1357
1358 if (x == 0e0f ) return 0x00000000U;
1359 if (x > +3.40282346638528860e+38f) return 0x7f800000U;
1360 if (x < -3.40282346638528860e+38f) return 0xff800000U;
1361 if (x != x ) return 0x7fbfffffU;
1362
1363 m = ecb_frexpf (x, &e) * 0x1000000U;
1364
1365 r = m & 0x80000000U;
1366
1367 if (r)
1368 m = -m;
1369
1370 if (e <= -126)
1371 {
1372 m &= 0xffffffU;
1373 m >>= (-125 - e);
1374 e = -126;
1375 }
1376
1377 r |= (e + 126) << 23;
1378 r |= m & 0x7fffffU;
1379 #endif
1380
1381 return r;
1382 }
1383
1384 /* converts an ieee single/binary32 to a float */
1385 ecb_function_ ecb_const float ecb_binary32_to_float (uint32_t x);
1386 ecb_function_ ecb_const float
1387 ecb_binary32_to_float (uint32_t x)
1388 {
1389 float r;
1390
1391 #if ECB_STDFP
1392 memcpy (&r, &x, 4);
1393 #else
1394 /* emulation, only works for normals and subnormals and +0 */
1395 int neg = x >> 31;
1396 int e = (x >> 23) & 0xffU;
1397
1398 x &= 0x7fffffU;
1399
1400 if (e)
1401 x |= 0x800000U;
1402 else
1403 e = 1;
1404
1405 /* we distrust ldexpf a bit and do the 2**-24 scaling by an extra multiply */
1406 r = ecb_ldexpf (x * (0.5f / 0x800000U), e - 126);
1407
1408 r = neg ? -r : r;
1409 #endif
1410
1411 return r;
1412 }
1413
1414 /* convert a double to ieee double/binary64 */
1415 ecb_function_ ecb_const uint64_t ecb_double_to_binary64 (double x);
1416 ecb_function_ ecb_const uint64_t
1417 ecb_double_to_binary64 (double x)
1418 {
1419 uint64_t r;
1420
1421 #if ECB_STDFP
1422 memcpy (&r, &x, 8);
1423 #else
1424 /* slow emulation, works for anything but -0 */
1425 uint64_t m;
1426 int e;
1427
1428 if (x == 0e0 ) return 0x0000000000000000U;
1429 if (x > +1.79769313486231470e+308) return 0x7ff0000000000000U;
1430 if (x < -1.79769313486231470e+308) return 0xfff0000000000000U;
1431 if (x != x ) return 0X7ff7ffffffffffffU;
1432
1433 m = frexp (x, &e) * 0x20000000000000U;
1434
1435 r = m & 0x8000000000000000;;
1436
1437 if (r)
1438 m = -m;
1439
1440 if (e <= -1022)
1441 {
1442 m &= 0x1fffffffffffffU;
1443 m >>= (-1021 - e);
1444 e = -1022;
1445 }
1446
1447 r |= ((uint64_t)(e + 1022)) << 52;
1448 r |= m & 0xfffffffffffffU;
1449 #endif
1450
1451 return r;
1452 }
1453
1454 /* converts an ieee double/binary64 to a double */
1455 ecb_function_ ecb_const double ecb_binary64_to_double (uint64_t x);
1456 ecb_function_ ecb_const double
1457 ecb_binary64_to_double (uint64_t x)
1458 {
1459 double r;
1460
1461 #if ECB_STDFP
1462 memcpy (&r, &x, 8);
1463 #else
1464 /* emulation, only works for normals and subnormals and +0 */
1465 int neg = x >> 63;
1466 int e = (x >> 52) & 0x7ffU;
1467
1468 x &= 0xfffffffffffffU;
1469
1470 if (e)
1471 x |= 0x10000000000000U;
1472 else
1473 e = 1;
1474
1475 /* we distrust ldexp a bit and do the 2**-53 scaling by an extra multiply */
1476 r = ldexp (x * (0.5 / 0x10000000000000U), e - 1022);
1477
1478 r = neg ? -r : r;
1479 #endif
1480
1481 return r;
1482 }
1483
1484 /* convert a float to ieee half/binary16 */
1485 ecb_function_ ecb_const uint16_t ecb_float_to_binary16 (float x);
1486 ecb_function_ ecb_const uint16_t
1487 ecb_float_to_binary16 (float x)
1488 {
1489 return ecb_binary32_to_binary16 (ecb_float_to_binary32 (x));
1490 }
1491
1492 /* convert an ieee half/binary16 to float */
1493 ecb_function_ ecb_const float ecb_binary16_to_float (uint16_t x);
1494 ecb_function_ ecb_const float
1495 ecb_binary16_to_float (uint16_t x)
1496 {
1497 return ecb_binary32_to_float (ecb_binary16_to_binary32 (x));
1498 }
1499
1500#endif
1501
873#endif 1502#endif
874 1503
875/* ECB.H END */ 1504/* ECB.H END */
876 1505
877#if ECB_MEMORY_FENCE_NEEDS_PTHREADS 1506#if ECB_MEMORY_FENCE_NEEDS_PTHREADS
878/* if your architecture doesn't need memory fences, e.g. because it is 1507/* if your architecture doesn't need memory fences, e.g. because it is
879 * single-cpu/core, or if you use libev in a project that doesn't use libev 1508 * single-cpu/core, or if you use libev in a project that doesn't use libev
880 * from multiple threads, then you can define ECB_AVOID_PTHREADS when compiling 1509 * from multiple threads, then you can define ECB_AVOID_PTHREADS when compiling
881 * libev, in which casess the memory fences become nops. 1510 * libev, in which cases the memory fences become nops.
882 * alternatively, you can remove this #error and link against libpthread, 1511 * alternatively, you can remove this #error and link against libpthread,
883 * which will then provide the memory fences. 1512 * which will then provide the memory fences.
884 */ 1513 */
885# error "memory fences not defined for your architecture, please report" 1514# error "memory fences not defined for your architecture, please report"
886#endif 1515#endif
… …
898#define inline_size ecb_inline 1527#define inline_size ecb_inline
899 1528
900#if EV_FEATURE_CODE 1529#if EV_FEATURE_CODE
901# define inline_speed ecb_inline 1530# define inline_speed ecb_inline
902#else 1531#else
903# define inline_speed static noinline 1532# define inline_speed noinline static
904#endif 1533#endif
905 1534
906#define NUMPRI (EV_MAXPRI - EV_MINPRI + 1) 1535#define NUMPRI (EV_MAXPRI - EV_MINPRI + 1)
907 1536
908#if EV_MINPRI == EV_MAXPRI 1537#if EV_MINPRI == EV_MAXPRI
… …
955#else 1584#else
956 1585
957#include <float.h> 1586#include <float.h>
958 1587
959/* a floor() replacement function, should be independent of ev_tstamp type */ 1588/* a floor() replacement function, should be independent of ev_tstamp type */
1589noinline
960static ev_tstamp noinline 1590static ev_tstamp
961ev_floor (ev_tstamp v) 1591ev_floor (ev_tstamp v)
962{ 1592{
963 /* the choice of shift factor is not terribly important */ 1593 /* the choice of shift factor is not terribly important */
964#if FLT_RADIX != 2 /* assume FLT_RADIX == 10 */ 1594#if FLT_RADIX != 2 /* assume FLT_RADIX == 10 */
965 const ev_tstamp shift = sizeof (unsigned long) >= 8 ? 10000000000000000000. : 1000000000.; 1595 const ev_tstamp shift = sizeof (unsigned long) >= 8 ? 10000000000000000000. : 1000000000.;
… …
997 1627
998#ifdef __linux 1628#ifdef __linux
999# include <sys/utsname.h> 1629# include <sys/utsname.h>
1000#endif 1630#endif
1001 1631
1002static unsigned int noinline ecb_cold 1632noinline ecb_cold
1633static unsigned int
1003ev_linux_version (void) 1634ev_linux_version (void)
1004{ 1635{
1005#ifdef __linux 1636#ifdef __linux
1006 unsigned int v = 0; 1637 unsigned int v = 0;
1007 struct utsname buf; 1638 struct utsname buf;
… …
1036} 1667}
1037 1668
1038/*****************************************************************************/ 1669/*****************************************************************************/
1039 1670
1040#if EV_AVOID_STDIO 1671#if EV_AVOID_STDIO
1041static void noinline ecb_cold 1672noinline ecb_cold
1673static void
1042ev_printerr (const char *msg) 1674ev_printerr (const char *msg)
1043{ 1675{
1044 write (STDERR_FILENO, msg, strlen (msg)); 1676 write (STDERR_FILENO, msg, strlen (msg));
1045} 1677}
1046#endif 1678#endif
1047 1679
1048static void (*syserr_cb)(const char *msg); 1680static void (*syserr_cb)(const char *msg) EV_THROW;
1049 1681
1050void ecb_cold 1682ecb_cold
1683void
1051ev_set_syserr_cb (void (*cb)(const char *msg)) 1684ev_set_syserr_cb (void (*cb)(const char *msg) EV_THROW) EV_THROW
1052{ 1685{
1053 syserr_cb = cb; 1686 syserr_cb = cb;
1054} 1687}
1055 1688
1056static void noinline ecb_cold 1689noinline ecb_cold
1690static void
1057ev_syserr (const char *msg) 1691ev_syserr (const char *msg)
1058{ 1692{
1059 if (!msg) 1693 if (!msg)
1060 msg = "(libev) system error"; 1694 msg = "(libev) system error";
1061 1695
… …
1074 abort (); 1708 abort ();
1075 } 1709 }
1076} 1710}
1077 1711
1078static void * 1712static void *
1079ev_realloc_emul (void *ptr, long size) 1713ev_realloc_emul (void *ptr, long size) EV_THROW
1080{ 1714{
1081#if __GLIBC__
1082 return realloc (ptr, size);
1083#else
1084 /* some systems, notably openbsd and darwin, fail to properly 1715 /* some systems, notably openbsd and darwin, fail to properly
1085 * implement realloc (x, 0) (as required by both ansi c-89 and 1716 * implement realloc (x, 0) (as required by both ansi c-89 and
1086 * the single unix specification, so work around them here. 1717 * the single unix specification, so work around them here.
1718 * recently, also (at least) fedora and debian started breaking it,
1719 * despite documenting it otherwise.
1087 */ 1720 */
1088 1721
1089 if (size) 1722 if (size)
1090 return realloc (ptr, size); 1723 return realloc (ptr, size);
1091 1724
1092 free (ptr); 1725 free (ptr);
1093 return 0; 1726 return 0;
1094#endif
1095} 1727}
1096 1728
1097static void *(*alloc)(void *ptr, long size) = ev_realloc_emul; 1729static void *(*alloc)(void *ptr, long size) EV_THROW = ev_realloc_emul;
1098 1730
1099void ecb_cold 1731ecb_cold
1732void
1100ev_set_allocator (void *(*cb)(void *ptr, long size)) 1733ev_set_allocator (void *(*cb)(void *ptr, long size) EV_THROW) EV_THROW
1101{ 1734{
1102 alloc = cb; 1735 alloc = cb;
1103} 1736}
1104 1737
1105inline_speed void * 1738inline_speed void *
… …
1193 #undef VAR 1826 #undef VAR
1194 }; 1827 };
1195 #include "ev_wrap.h" 1828 #include "ev_wrap.h"
1196 1829
1197 static struct ev_loop default_loop_struct; 1830 static struct ev_loop default_loop_struct;
1198 EV_API_DECL struct ev_loop *ev_default_loop_ptr = 0; /* needs to be initialised to make it a defintiino despite extern */ 1831 EV_API_DECL struct ev_loop *ev_default_loop_ptr = 0; /* needs to be initialised to make it a definition despite extern */
1199 1832
1200#else 1833#else
1201 1834
1202 EV_API_DECL ev_tstamp ev_rt_now = 0; /* needs to be initialised to make it a defintiino despite extern */ 1835 EV_API_DECL ev_tstamp ev_rt_now = 0; /* needs to be initialised to make it a definition despite extern */
1203 #define VAR(name,decl) static decl; 1836 #define VAR(name,decl) static decl;
1204 #include "ev_vars.h" 1837 #include "ev_vars.h"
1205 #undef VAR 1838 #undef VAR
1206 1839
1207 static int ev_default_loop_ptr; 1840 static int ev_default_loop_ptr;
… …
1222 1855
1223/*****************************************************************************/ 1856/*****************************************************************************/
1224 1857
1225#ifndef EV_HAVE_EV_TIME 1858#ifndef EV_HAVE_EV_TIME
1226ev_tstamp 1859ev_tstamp
1227ev_time (void) 1860ev_time (void) EV_THROW
1228{ 1861{
1229#if EV_USE_REALTIME 1862#if EV_USE_REALTIME
1230 if (expect_true (have_realtime)) 1863 if (expect_true (have_realtime))
1231 { 1864 {
1232 struct timespec ts; 1865 struct timespec ts;
… …
1256 return ev_time (); 1889 return ev_time ();
1257} 1890}
1258 1891
1259#if EV_MULTIPLICITY 1892#if EV_MULTIPLICITY
1260ev_tstamp 1893ev_tstamp
1261ev_now (EV_P) 1894ev_now (EV_P) EV_THROW
1262{ 1895{
1263 return ev_rt_now; 1896 return ev_rt_now;
1264} 1897}
1265#endif 1898#endif
1266 1899
1267void 1900void
1268ev_sleep (ev_tstamp delay) 1901ev_sleep (ev_tstamp delay) EV_THROW
1269{ 1902{
1270 if (delay > 0.) 1903 if (delay > 0.)
1271 { 1904 {
1272#if EV_USE_NANOSLEEP 1905#if EV_USE_NANOSLEEP
1273 struct timespec ts; 1906 struct timespec ts;
1274 1907
1275 EV_TS_SET (ts, delay); 1908 EV_TS_SET (ts, delay);
1276 nanosleep (&ts, 0); 1909 nanosleep (&ts, 0);
1277#elif defined(_WIN32) 1910#elif defined _WIN32
1278 Sleep ((unsigned long)(delay * 1e3)); 1911 Sleep ((unsigned long)(delay * 1e3));
1279#else 1912#else
1280 struct timeval tv; 1913 struct timeval tv;
1281 1914
1282 /* here we rely on sys/time.h + sys/types.h + unistd.h providing select */ 1915 /* here we rely on sys/time.h + sys/types.h + unistd.h providing select */
… …
1313 } 1946 }
1314 1947
1315 return ncur; 1948 return ncur;
1316} 1949}
1317 1950
1318static void * noinline ecb_cold 1951noinline ecb_cold
1952static void *
1319array_realloc (int elem, void *base, int *cur, int cnt) 1953array_realloc (int elem, void *base, int *cur, int cnt)
1320{ 1954{
1321 *cur = array_nextsize (elem, *cur, cnt); 1955 *cur = array_nextsize (elem, *cur, cnt);
1322 return ev_realloc (base, elem * *cur); 1956 return ev_realloc (base, elem * *cur);
1323} 1957}
… …
1326 memset ((void *)(base), 0, sizeof (*(base)) * (count)) 1960 memset ((void *)(base), 0, sizeof (*(base)) * (count))
1327 1961
1328#define array_needsize(type,base,cur,cnt,init) \ 1962#define array_needsize(type,base,cur,cnt,init) \
1329 if (expect_false ((cnt) > (cur))) \ 1963 if (expect_false ((cnt) > (cur))) \
1330 { \ 1964 { \
1331 int ecb_unused ocur_ = (cur); \ 1965 ecb_unused int ocur_ = (cur); \
1332 (base) = (type *)array_realloc \ 1966 (base) = (type *)array_realloc \
1333 (sizeof (type), (base), &(cur), (cnt)); \ 1967 (sizeof (type), (base), &(cur), (cnt)); \
1334 init ((base) + (ocur_), (cur) - ocur_); \ 1968 init ((base) + (ocur_), (cur) - ocur_); \
1335 } 1969 }
1336 1970
… …
1348 ev_free (stem ## s idx); stem ## cnt idx = stem ## max idx = 0; stem ## s idx = 0 1982 ev_free (stem ## s idx); stem ## cnt idx = stem ## max idx = 0; stem ## s idx = 0
1349 1983
1350/*****************************************************************************/ 1984/*****************************************************************************/
1351 1985
1352/* dummy callback for pending events */ 1986/* dummy callback for pending events */
1353static void noinline 1987noinline
1988static void
1354pendingcb (EV_P_ ev_prepare *w, int revents) 1989pendingcb (EV_P_ ev_prepare *w, int revents)
1355{ 1990{
1356} 1991}
1357 1992
1358void noinline 1993noinline
1994void
1359ev_feed_event (EV_P_ void *w, int revents) 1995ev_feed_event (EV_P_ void *w, int revents) EV_THROW
1360{ 1996{
1361 W w_ = (W)w; 1997 W w_ = (W)w;
1362 int pri = ABSPRI (w_); 1998 int pri = ABSPRI (w_);
1363 1999
1364 if (expect_false (w_->pending)) 2000 if (expect_false (w_->pending))
… …
1368 w_->pending = ++pendingcnt [pri]; 2004 w_->pending = ++pendingcnt [pri];
1369 array_needsize (ANPENDING, pendings [pri], pendingmax [pri], w_->pending, EMPTY2); 2005 array_needsize (ANPENDING, pendings [pri], pendingmax [pri], w_->pending, EMPTY2);
1370 pendings [pri][w_->pending - 1].w = w_; 2006 pendings [pri][w_->pending - 1].w = w_;
1371 pendings [pri][w_->pending - 1].events = revents; 2007 pendings [pri][w_->pending - 1].events = revents;
1372 } 2008 }
2009
2010 pendingpri = NUMPRI - 1;
1373} 2011}
1374 2012
1375inline_speed void 2013inline_speed void
1376feed_reverse (EV_P_ W w) 2014feed_reverse (EV_P_ W w)
1377{ 2015{
… …
1423 if (expect_true (!anfd->reify)) 2061 if (expect_true (!anfd->reify))
1424 fd_event_nocheck (EV_A_ fd, revents); 2062 fd_event_nocheck (EV_A_ fd, revents);
1425} 2063}
1426 2064
1427void 2065void
1428ev_feed_fd_event (EV_P_ int fd, int revents) 2066ev_feed_fd_event (EV_P_ int fd, int revents) EV_THROW
1429{ 2067{
1430 if (fd >= 0 && fd < anfdmax) 2068 if (fd >= 0 && fd < anfdmax)
1431 fd_event_nocheck (EV_A_ fd, revents); 2069 fd_event_nocheck (EV_A_ fd, revents);
1432} 2070}
1433 2071
… …
1491 2129
1492 fdchangecnt = 0; 2130 fdchangecnt = 0;
1493} 2131}
1494 2132
1495/* something about the given fd changed */ 2133/* something about the given fd changed */
1496inline_size void 2134inline_size
2135void
1497fd_change (EV_P_ int fd, int flags) 2136fd_change (EV_P_ int fd, int flags)
1498{ 2137{
1499 unsigned char reify = anfds [fd].reify; 2138 unsigned char reify = anfds [fd].reify;
1500 anfds [fd].reify |= flags; 2139 anfds [fd].reify |= flags;
1501 2140
… …
1506 fdchanges [fdchangecnt - 1] = fd; 2145 fdchanges [fdchangecnt - 1] = fd;
1507 } 2146 }
1508} 2147}
1509 2148
1510/* the given fd is invalid/unusable, so make sure it doesn't hurt us anymore */ 2149/* the given fd is invalid/unusable, so make sure it doesn't hurt us anymore */
1511inline_speed void ecb_cold 2150inline_speed ecb_cold void
1512fd_kill (EV_P_ int fd) 2151fd_kill (EV_P_ int fd)
1513{ 2152{
1514 ev_io *w; 2153 ev_io *w;
1515 2154
1516 while ((w = (ev_io *)anfds [fd].head)) 2155 while ((w = (ev_io *)anfds [fd].head))
… …
1519 ev_feed_event (EV_A_ (W)w, EV_ERROR | EV_READ | EV_WRITE); 2158 ev_feed_event (EV_A_ (W)w, EV_ERROR | EV_READ | EV_WRITE);
1520 } 2159 }
1521} 2160}
1522 2161
1523/* check whether the given fd is actually valid, for error recovery */ 2162/* check whether the given fd is actually valid, for error recovery */
1524inline_size int ecb_cold 2163inline_size ecb_cold int
1525fd_valid (int fd) 2164fd_valid (int fd)
1526{ 2165{
1527#ifdef _WIN32 2166#ifdef _WIN32
1528 return EV_FD_TO_WIN32_HANDLE (fd) != -1; 2167 return EV_FD_TO_WIN32_HANDLE (fd) != -1;
1529#else 2168#else
1530 return fcntl (fd, F_GETFD) != -1; 2169 return fcntl (fd, F_GETFD) != -1;
1531#endif 2170#endif
1532} 2171}
1533 2172
1534/* called on EBADF to verify fds */ 2173/* called on EBADF to verify fds */
1535static void noinline ecb_cold 2174noinline ecb_cold
2175static void
1536fd_ebadf (EV_P) 2176fd_ebadf (EV_P)
1537{ 2177{
1538 int fd; 2178 int fd;
1539 2179
1540 for (fd = 0; fd < anfdmax; ++fd) 2180 for (fd = 0; fd < anfdmax; ++fd)
… …
1542 if (!fd_valid (fd) && errno == EBADF) 2182 if (!fd_valid (fd) && errno == EBADF)
1543 fd_kill (EV_A_ fd); 2183 fd_kill (EV_A_ fd);
1544} 2184}
1545 2185
1546/* called on ENOMEM in select/poll to kill some fds and retry */ 2186/* called on ENOMEM in select/poll to kill some fds and retry */
1547static void noinline ecb_cold 2187noinline ecb_cold
2188static void
1548fd_enomem (EV_P) 2189fd_enomem (EV_P)
1549{ 2190{
1550 int fd; 2191 int fd;
1551 2192
1552 for (fd = anfdmax; fd--; ) 2193 for (fd = anfdmax; fd--; )
… …
1556 break; 2197 break;
1557 } 2198 }
1558} 2199}
1559 2200
1560/* usually called after fork if backend needs to re-arm all fds from scratch */ 2201/* usually called after fork if backend needs to re-arm all fds from scratch */
1561static void noinline 2202noinline
2203static void
1562fd_rearm_all (EV_P) 2204fd_rearm_all (EV_P)
1563{ 2205{
1564 int fd; 2206 int fd;
1565 2207
1566 for (fd = 0; fd < anfdmax; ++fd) 2208 for (fd = 0; fd < anfdmax; ++fd)
… …
1747 2389
1748/*****************************************************************************/ 2390/*****************************************************************************/
1749 2391
1750#if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE 2392#if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE
1751 2393
1752static void noinline ecb_cold 2394noinline ecb_cold
2395static void
1753evpipe_init (EV_P) 2396evpipe_init (EV_P)
1754{ 2397{
1755 if (!ev_is_active (&pipe_w)) 2398 if (!ev_is_active (&pipe_w))
1756 { 2399 {
2400 int fds [2];
2401
1757# if EV_USE_EVENTFD 2402# if EV_USE_EVENTFD
2403 fds [0] = -1;
1758 evfd = eventfd (0, EFD_NONBLOCK | EFD_CLOEXEC); 2404 fds [1] = eventfd (0, EFD_NONBLOCK | EFD_CLOEXEC);
1759 if (evfd < 0 && errno == EINVAL) 2405 if (fds [1] < 0 && errno == EINVAL)
1760 evfd = eventfd (0, 0); 2406 fds [1] = eventfd (0, 0);
1761 2407
1762 if (evfd >= 0) 2408 if (fds [1] < 0)
2409# endif
1763 { 2410 {
2411 while (pipe (fds))
2412 ev_syserr ("(libev) error creating signal/async pipe");
2413
2414 fd_intern (fds [0]);
2415 }
2416
1764 evpipe [0] = -1; 2417 evpipe [0] = fds [0];
1765 fd_intern (evfd); /* doing it twice doesn't hurt */ 2418
1766 ev_io_set (&pipe_w, evfd, EV_READ); 2419 if (evpipe [1] < 0)
2420 evpipe [1] = fds [1]; /* first call, set write fd */
2421 else
2422 {
2423 /* on subsequent calls, do not change evpipe [1] */
2424 /* so that evpipe_write can always rely on its value. */
2425 /* this branch does not do anything sensible on windows, */
2426 /* so must not be executed on windows */
2427
2428 dup2 (fds [1], evpipe [1]);
2429 close (fds [1]);
2430 }
2431
2432 fd_intern (evpipe [1]);
2433
2434 ev_io_set (&pipe_w, evpipe [0] < 0 ? evpipe [1] : evpipe [0], EV_READ);
2435 ev_io_start (EV_A_ &pipe_w);
2436 ev_unref (EV_A); /* watcher should not keep loop alive */
2437 }
2438}
2439
2440inline_speed void
2441evpipe_write (EV_P_ EV_ATOMIC_T *flag)
2442{
2443 ECB_MEMORY_FENCE; /* push out the write before this function was called, acquire flag */
2444
2445 if (expect_true (*flag))
2446 return;
2447
2448 *flag = 1;
2449 ECB_MEMORY_FENCE_RELEASE; /* make sure flag is visible before the wakeup */
2450
2451 pipe_write_skipped = 1;
2452
2453 ECB_MEMORY_FENCE; /* make sure pipe_write_skipped is visible before we check pipe_write_wanted */
2454
2455 if (pipe_write_wanted)
2456 {
2457 int old_errno;
2458
2459 pipe_write_skipped = 0;
2460 ECB_MEMORY_FENCE_RELEASE;
2461
2462 old_errno = errno; /* save errno because write will clobber it */
2463
2464#if EV_USE_EVENTFD
2465 if (evpipe [0] < 0)
2466 {
2467 uint64_t counter = 1;
2468 write (evpipe [1], &counter, sizeof (uint64_t));
1767 } 2469 }
1768 else 2470 else
1769# endif 2471#endif
1770 { 2472 {
1771 while (pipe (evpipe)) 2473#ifdef _WIN32
1772 ev_syserr ("(libev) error creating signal/async pipe"); 2474 WSABUF buf;
1773 2475 DWORD sent;
1774 fd_intern (evpipe [0]); 2476 buf.buf = &buf;
1775 fd_intern (evpipe [1]); 2477 buf.len = 1;
1776 ev_io_set (&pipe_w, evpipe [0], EV_READ); 2478 WSASend (EV_FD_TO_WIN32_HANDLE (evpipe [1]), &buf, 1, &sent, 0, 0, 0);
1777 } 2479#else
1778
1779 ev_io_start (EV_A_ &pipe_w);
1780 ev_unref (EV_A); /* watcher should not keep loop alive */
1781 }
1782}
1783
1784inline_speed void
1785evpipe_write (EV_P_ EV_ATOMIC_T *flag)
1786{
1787 if (expect_true (*flag))
1788 return;
1789
1790 *flag = 1;
1791
1792 ECB_MEMORY_FENCE_RELEASE; /* make sure flag is visible before the wakeup */
1793
1794 pipe_write_skipped = 1;
1795
1796 ECB_MEMORY_FENCE; /* make sure pipe_write_skipped is visible before we check pipe_write_wanted */
1797
1798 if (pipe_write_wanted)
1799 {
1800 int old_errno;
1801
1802 pipe_write_skipped = 0; /* just an optimisation, no fence needed */
1803
1804 old_errno = errno; /* save errno because write will clobber it */
1805
1806#if EV_USE_EVENTFD
1807 if (evfd >= 0)
1808 {
1809 uint64_t counter = 1;
1810 write (evfd, &counter, sizeof (uint64_t));
1811 }
1812 else
1813#endif
1814 {
1815 /* win32 people keep sending patches that change this write() to send() */
1816 /* and then run away. but send() is wrong, it wants a socket handle on win32 */
1817 /* so when you think this write should be a send instead, please find out */
1818 /* where your send() is from - it's definitely not the microsoft send, and */
1819 /* tell me. thank you. */
1820 write (evpipe [1], &(evpipe [1]), 1); 2480 write (evpipe [1], &(evpipe [1]), 1);
2481#endif
1821 } 2482 }
1822 2483
1823 errno = old_errno; 2484 errno = old_errno;
1824 } 2485 }
1825} 2486}
… …
1832 int i; 2493 int i;
1833 2494
1834 if (revents & EV_READ) 2495 if (revents & EV_READ)
1835 { 2496 {
1836#if EV_USE_EVENTFD 2497#if EV_USE_EVENTFD
1837 if (evfd >= 0) 2498 if (evpipe [0] < 0)
1838 { 2499 {
1839 uint64_t counter; 2500 uint64_t counter;
1840 read (evfd, &counter, sizeof (uint64_t)); 2501 read (evpipe [1], &counter, sizeof (uint64_t));
1841 } 2502 }
1842 else 2503 else
1843#endif 2504#endif
1844 { 2505 {
1845 char dummy; 2506 char dummy[4];
1846 /* see discussion in evpipe_write when you think this read should be recv in win32 */ 2507#ifdef _WIN32
2508 WSABUF buf;
2509 DWORD recvd;
2510 DWORD flags = 0;
2511 buf.buf = dummy;
2512 buf.len = sizeof (dummy);
2513 WSARecv (EV_FD_TO_WIN32_HANDLE (evpipe [0]), &buf, 1, &recvd, &flags, 0, 0);
2514#else
1847 read (evpipe [0], &dummy, 1); 2515 read (evpipe [0], &dummy, sizeof (dummy));
2516#endif
1848 } 2517 }
1849 } 2518 }
1850 2519
1851 pipe_write_skipped = 0; 2520 pipe_write_skipped = 0;
2521
2522 ECB_MEMORY_FENCE; /* push out skipped, acquire flags */
1852 2523
1853#if EV_SIGNAL_ENABLE 2524#if EV_SIGNAL_ENABLE
1854 if (sig_pending) 2525 if (sig_pending)
1855 { 2526 {
1856 sig_pending = 0; 2527 sig_pending = 0;
2528
2529 ECB_MEMORY_FENCE;
1857 2530
1858 for (i = EV_NSIG - 1; i--; ) 2531 for (i = EV_NSIG - 1; i--; )
1859 if (expect_false (signals [i].pending)) 2532 if (expect_false (signals [i].pending))
1860 ev_feed_signal_event (EV_A_ i + 1); 2533 ev_feed_signal_event (EV_A_ i + 1);
1861 } 2534 }
… …
1863 2536
1864#if EV_ASYNC_ENABLE 2537#if EV_ASYNC_ENABLE
1865 if (async_pending) 2538 if (async_pending)
1866 { 2539 {
1867 async_pending = 0; 2540 async_pending = 0;
2541
2542 ECB_MEMORY_FENCE;
1868 2543
1869 for (i = asynccnt; i--; ) 2544 for (i = asynccnt; i--; )
1870 if (asyncs [i]->sent) 2545 if (asyncs [i]->sent)
1871 { 2546 {
1872 asyncs [i]->sent = 0; 2547 asyncs [i]->sent = 0;
2548 ECB_MEMORY_FENCE_RELEASE;
1873 ev_feed_event (EV_A_ asyncs [i], EV_ASYNC); 2549 ev_feed_event (EV_A_ asyncs [i], EV_ASYNC);
1874 } 2550 }
1875 } 2551 }
1876#endif 2552#endif
1877} 2553}
1878 2554
1879/*****************************************************************************/ 2555/*****************************************************************************/
1880 2556
1881void 2557void
1882ev_feed_signal (int signum) 2558ev_feed_signal (int signum) EV_THROW
1883{ 2559{
1884#if EV_MULTIPLICITY 2560#if EV_MULTIPLICITY
2561 EV_P;
2562 ECB_MEMORY_FENCE_ACQUIRE;
1885 EV_P = signals [signum - 1].loop; 2563 EV_A = signals [signum - 1].loop;
1886 2564
1887 if (!EV_A) 2565 if (!EV_A)
1888 return; 2566 return;
1889#endif 2567#endif
1890 2568
1891 if (!ev_active (&pipe_w))
1892 return;
1893
1894 signals [signum - 1].pending = 1; 2569 signals [signum - 1].pending = 1;
1895 evpipe_write (EV_A_ &sig_pending); 2570 evpipe_write (EV_A_ &sig_pending);
1896} 2571}
1897 2572
1898static void 2573static void
… …
1903#endif 2578#endif
1904 2579
1905 ev_feed_signal (signum); 2580 ev_feed_signal (signum);
1906} 2581}
1907 2582
1908void noinline 2583noinline
2584void
1909ev_feed_signal_event (EV_P_ int signum) 2585ev_feed_signal_event (EV_P_ int signum) EV_THROW
1910{ 2586{
1911 WL w; 2587 WL w;
1912 2588
1913 if (expect_false (signum <= 0 || signum > EV_NSIG)) 2589 if (expect_false (signum <= 0 || signum >= EV_NSIG))
1914 return; 2590 return;
1915 2591
1916 --signum; 2592 --signum;
1917 2593
1918#if EV_MULTIPLICITY 2594#if EV_MULTIPLICITY
… …
1922 if (expect_false (signals [signum].loop != EV_A)) 2598 if (expect_false (signals [signum].loop != EV_A))
1923 return; 2599 return;
1924#endif 2600#endif
1925 2601
1926 signals [signum].pending = 0; 2602 signals [signum].pending = 0;
2603 ECB_MEMORY_FENCE_RELEASE;
1927 2604
1928 for (w = signals [signum].head; w; w = w->next) 2605 for (w = signals [signum].head; w; w = w->next)
1929 ev_feed_event (EV_A_ (W)w, EV_SIGNAL); 2606 ev_feed_event (EV_A_ (W)w, EV_SIGNAL);
1930} 2607}
1931 2608
… …
2029#endif 2706#endif
2030#if EV_USE_SELECT 2707#if EV_USE_SELECT
2031# include "ev_select.c" 2708# include "ev_select.c"
2032#endif 2709#endif
2033 2710
2034int ecb_cold 2711ecb_cold int
2035ev_version_major (void) 2712ev_version_major (void) EV_THROW
2036{ 2713{
2037 return EV_VERSION_MAJOR; 2714 return EV_VERSION_MAJOR;
2038} 2715}
2039 2716
2040int ecb_cold 2717ecb_cold int
2041ev_version_minor (void) 2718ev_version_minor (void) EV_THROW
2042{ 2719{
2043 return EV_VERSION_MINOR; 2720 return EV_VERSION_MINOR;
2044} 2721}
2045 2722
2046/* return true if we are running with elevated privileges and should ignore env variables */ 2723/* return true if we are running with elevated privileges and should ignore env variables */
2047int inline_size ecb_cold 2724inline_size ecb_cold int
2048enable_secure (void) 2725enable_secure (void)
2049{ 2726{
2050#ifdef _WIN32 2727#ifdef _WIN32
2051 return 0; 2728 return 0;
2052#else 2729#else
2053 return getuid () != geteuid () 2730 return getuid () != geteuid ()
2054 || getgid () != getegid (); 2731 || getgid () != getegid ();
2055#endif 2732#endif
2056} 2733}
2057 2734
2058unsigned int ecb_cold 2735ecb_cold
2736unsigned int
2059ev_supported_backends (void) 2737ev_supported_backends (void) EV_THROW
2060{ 2738{
2061 unsigned int flags = 0; 2739 unsigned int flags = 0;
2062 2740
2063 if (EV_USE_PORT ) flags |= EVBACKEND_PORT; 2741 if (EV_USE_PORT ) flags |= EVBACKEND_PORT;
2064 if (EV_USE_KQUEUE) flags |= EVBACKEND_KQUEUE; 2742 if (EV_USE_KQUEUE) flags |= EVBACKEND_KQUEUE;
… …
2067 if (EV_USE_SELECT) flags |= EVBACKEND_SELECT; 2745 if (EV_USE_SELECT) flags |= EVBACKEND_SELECT;
2068 2746
2069 return flags; 2747 return flags;
2070} 2748}
2071 2749
2072unsigned int ecb_cold 2750ecb_cold
2751unsigned int
2073ev_recommended_backends (void) 2752ev_recommended_backends (void) EV_THROW
2074{ 2753{
2075 unsigned int flags = ev_supported_backends (); 2754 unsigned int flags = ev_supported_backends ();
2076 2755
2077#ifndef __NetBSD__ 2756#ifndef __NetBSD__
2078 /* kqueue is borked on everything but netbsd apparently */ 2757 /* kqueue is borked on everything but netbsd apparently */
… …
2089#endif 2768#endif
2090 2769
2091 return flags; 2770 return flags;
2092} 2771}
2093 2772
2094unsigned int ecb_cold 2773ecb_cold
2774unsigned int
2095ev_embeddable_backends (void) 2775ev_embeddable_backends (void) EV_THROW
2096{ 2776{
2097 int flags = EVBACKEND_EPOLL | EVBACKEND_KQUEUE | EVBACKEND_PORT; 2777 int flags = EVBACKEND_EPOLL | EVBACKEND_KQUEUE | EVBACKEND_PORT;
2098 2778
2099 /* epoll embeddability broken on all linux versions up to at least 2.6.23 */ 2779 /* epoll embeddability broken on all linux versions up to at least 2.6.23 */
2100 if (ev_linux_version () < 0x020620) /* disable it on linux < 2.6.32 */ 2780 if (ev_linux_version () < 0x020620) /* disable it on linux < 2.6.32 */
… …
2102 2782
2103 return flags; 2783 return flags;
2104} 2784}
2105 2785
2106unsigned int 2786unsigned int
2107ev_backend (EV_P) 2787ev_backend (EV_P) EV_THROW
2108{ 2788{
2109 return backend; 2789 return backend;
2110} 2790}
2111 2791
2112#if EV_FEATURE_API 2792#if EV_FEATURE_API
2113unsigned int 2793unsigned int
2114ev_iteration (EV_P) 2794ev_iteration (EV_P) EV_THROW
2115{ 2795{
2116 return loop_count; 2796 return loop_count;
2117} 2797}
2118 2798
2119unsigned int 2799unsigned int
2120ev_depth (EV_P) 2800ev_depth (EV_P) EV_THROW
2121{ 2801{
2122 return loop_depth; 2802 return loop_depth;
2123} 2803}
2124 2804
2125void 2805void
2126ev_set_io_collect_interval (EV_P_ ev_tstamp interval) 2806ev_set_io_collect_interval (EV_P_ ev_tstamp interval) EV_THROW
2127{ 2807{
2128 io_blocktime = interval; 2808 io_blocktime = interval;
2129} 2809}
2130 2810
2131void 2811void
2132ev_set_timeout_collect_interval (EV_P_ ev_tstamp interval) 2812ev_set_timeout_collect_interval (EV_P_ ev_tstamp interval) EV_THROW
2133{ 2813{
2134 timeout_blocktime = interval; 2814 timeout_blocktime = interval;
2135} 2815}
2136 2816
2137void 2817void
2138ev_set_userdata (EV_P_ void *data) 2818ev_set_userdata (EV_P_ void *data) EV_THROW
2139{ 2819{
2140 userdata = data; 2820 userdata = data;
2141} 2821}
2142 2822
2143void * 2823void *
2144ev_userdata (EV_P) 2824ev_userdata (EV_P) EV_THROW
2145{ 2825{
2146 return userdata; 2826 return userdata;
2147} 2827}
2148 2828
2149void 2829void
2150ev_set_invoke_pending_cb (EV_P_ void (*invoke_pending_cb)(EV_P)) 2830ev_set_invoke_pending_cb (EV_P_ ev_loop_callback invoke_pending_cb) EV_THROW
2151{ 2831{
2152 invoke_cb = invoke_pending_cb; 2832 invoke_cb = invoke_pending_cb;
2153} 2833}
2154 2834
2155void 2835void
2156ev_set_loop_release_cb (EV_P_ void (*release)(EV_P), void (*acquire)(EV_P)) 2836ev_set_loop_release_cb (EV_P_ void (*release)(EV_P) EV_THROW, void (*acquire)(EV_P) EV_THROW) EV_THROW
2157{ 2837{
2158 release_cb = release; 2838 release_cb = release;
2159 acquire_cb = acquire; 2839 acquire_cb = acquire;
2160} 2840}
2161#endif 2841#endif
2162 2842
2163/* initialise a loop structure, must be zero-initialised */ 2843/* initialise a loop structure, must be zero-initialised */
2164static void noinline ecb_cold 2844noinline ecb_cold
2845static void
2165loop_init (EV_P_ unsigned int flags) 2846loop_init (EV_P_ unsigned int flags) EV_THROW
2166{ 2847{
2167 if (!backend) 2848 if (!backend)
2168 { 2849 {
2169 origflags = flags; 2850 origflags = flags;
2170 2851
… …
2215#if EV_ASYNC_ENABLE 2896#if EV_ASYNC_ENABLE
2216 async_pending = 0; 2897 async_pending = 0;
2217#endif 2898#endif
2218 pipe_write_skipped = 0; 2899 pipe_write_skipped = 0;
2219 pipe_write_wanted = 0; 2900 pipe_write_wanted = 0;
2901 evpipe [0] = -1;
2902 evpipe [1] = -1;
2220#if EV_USE_INOTIFY 2903#if EV_USE_INOTIFY
2221 fs_fd = flags & EVFLAG_NOINOTIFY ? -1 : -2; 2904 fs_fd = flags & EVFLAG_NOINOTIFY ? -1 : -2;
2222#endif 2905#endif
2223#if EV_USE_SIGNALFD 2906#if EV_USE_SIGNALFD
2224 sigfd = flags & EVFLAG_SIGNALFD ? -2 : -1; 2907 sigfd = flags & EVFLAG_SIGNALFD ? -2 : -1;
… …
2254#endif 2937#endif
2255 } 2938 }
2256} 2939}
2257 2940
2258/* free up a loop structure */ 2941/* free up a loop structure */
2259void ecb_cold 2942ecb_cold
2943void
2260ev_loop_destroy (EV_P) 2944ev_loop_destroy (EV_P)
2261{ 2945{
2262 int i; 2946 int i;
2263 2947
2264#if EV_MULTIPLICITY 2948#if EV_MULTIPLICITY
… …
2275 EV_INVOKE_PENDING; 2959 EV_INVOKE_PENDING;
2276 } 2960 }
2277#endif 2961#endif
2278 2962
2279#if EV_CHILD_ENABLE 2963#if EV_CHILD_ENABLE
2280 if (ev_is_active (&childev)) 2964 if (ev_is_default_loop (EV_A) && ev_is_active (&childev))
2281 { 2965 {
2282 ev_ref (EV_A); /* child watcher */ 2966 ev_ref (EV_A); /* child watcher */
2283 ev_signal_stop (EV_A_ &childev); 2967 ev_signal_stop (EV_A_ &childev);
2284 } 2968 }
2285#endif 2969#endif
… …
2287 if (ev_is_active (&pipe_w)) 2971 if (ev_is_active (&pipe_w))
2288 { 2972 {
2289 /*ev_ref (EV_A);*/ 2973 /*ev_ref (EV_A);*/
2290 /*ev_io_stop (EV_A_ &pipe_w);*/ 2974 /*ev_io_stop (EV_A_ &pipe_w);*/
2291 2975
2292#if EV_USE_EVENTFD
2293 if (evfd >= 0)
2294 close (evfd);
2295#endif
2296
2297 if (evpipe [0] >= 0)
2298 {
2299 EV_WIN32_CLOSE_FD (evpipe [0]); 2976 if (evpipe [0] >= 0) EV_WIN32_CLOSE_FD (evpipe [0]);
2300 EV_WIN32_CLOSE_FD (evpipe [1]); 2977 if (evpipe [1] >= 0) EV_WIN32_CLOSE_FD (evpipe [1]);
2301 }
2302 } 2978 }
2303 2979
2304#if EV_USE_SIGNALFD 2980#if EV_USE_SIGNALFD
2305 if (ev_is_active (&sigfd_w)) 2981 if (ev_is_active (&sigfd_w))
2306 close (sigfd); 2982 close (sigfd);
… …
2392#endif 3068#endif
2393#if EV_USE_INOTIFY 3069#if EV_USE_INOTIFY
2394 infy_fork (EV_A); 3070 infy_fork (EV_A);
2395#endif 3071#endif
2396 3072
3073#if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE
2397 if (ev_is_active (&pipe_w)) 3074 if (ev_is_active (&pipe_w) && postfork != 2)
2398 { 3075 {
2399 /* pipe_write_wanted must be false now, so modifying fd vars should be safe */ 3076 /* pipe_write_wanted must be false now, so modifying fd vars should be safe */
2400 3077
2401 ev_ref (EV_A); 3078 ev_ref (EV_A);
2402 ev_io_stop (EV_A_ &pipe_w); 3079 ev_io_stop (EV_A_ &pipe_w);
2403 3080
2404#if EV_USE_EVENTFD
2405 if (evfd >= 0)
2406 close (evfd);
2407#endif
2408
2409 if (evpipe [0] >= 0) 3081 if (evpipe [0] >= 0)
2410 {
2411 EV_WIN32_CLOSE_FD (evpipe [0]); 3082 EV_WIN32_CLOSE_FD (evpipe [0]);
2412 EV_WIN32_CLOSE_FD (evpipe [1]);
2413 }
2414 3083
2415#if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE
2416 evpipe_init (EV_A); 3084 evpipe_init (EV_A);
2417 /* now iterate over everything, in case we missed something */ 3085 /* iterate over everything, in case we missed something before */
2418 pipecb (EV_A_ &pipe_w, EV_READ); 3086 ev_feed_event (EV_A_ &pipe_w, EV_CUSTOM);
2419#endif
2420 } 3087 }
3088#endif
2421 3089
2422 postfork = 0; 3090 postfork = 0;
2423} 3091}
2424 3092
2425#if EV_MULTIPLICITY 3093#if EV_MULTIPLICITY
2426 3094
3095ecb_cold
2427struct ev_loop * ecb_cold 3096struct ev_loop *
2428ev_loop_new (unsigned int flags) 3097ev_loop_new (unsigned int flags) EV_THROW
2429{ 3098{
2430 EV_P = (struct ev_loop *)ev_malloc (sizeof (struct ev_loop)); 3099 EV_P = (struct ev_loop *)ev_malloc (sizeof (struct ev_loop));
2431 3100
2432 memset (EV_A, 0, sizeof (struct ev_loop)); 3101 memset (EV_A, 0, sizeof (struct ev_loop));
2433 loop_init (EV_A_ flags); 3102 loop_init (EV_A_ flags);
… …
2440} 3109}
2441 3110
2442#endif /* multiplicity */ 3111#endif /* multiplicity */
2443 3112
2444#if EV_VERIFY 3113#if EV_VERIFY
2445static void noinline ecb_cold 3114noinline ecb_cold
3115static void
2446verify_watcher (EV_P_ W w) 3116verify_watcher (EV_P_ W w)
2447{ 3117{
2448 assert (("libev: watcher has invalid priority", ABSPRI (w) >= 0 && ABSPRI (w) < NUMPRI)); 3118 assert (("libev: watcher has invalid priority", ABSPRI (w) >= 0 && ABSPRI (w) < NUMPRI));
2449 3119
2450 if (w->pending) 3120 if (w->pending)
2451 assert (("libev: pending watcher not on pending queue", pendings [ABSPRI (w)][w->pending - 1].w == w)); 3121 assert (("libev: pending watcher not on pending queue", pendings [ABSPRI (w)][w->pending - 1].w == w));
2452} 3122}
2453 3123
2454static void noinline ecb_cold 3124noinline ecb_cold
3125static void
2455verify_heap (EV_P_ ANHE *heap, int N) 3126verify_heap (EV_P_ ANHE *heap, int N)
2456{ 3127{
2457 int i; 3128 int i;
2458 3129
2459 for (i = HEAP0; i < N + HEAP0; ++i) 3130 for (i = HEAP0; i < N + HEAP0; ++i)
… …
2464 3135
2465 verify_watcher (EV_A_ (W)ANHE_w (heap [i])); 3136 verify_watcher (EV_A_ (W)ANHE_w (heap [i]));
2466 } 3137 }
2467} 3138}
2468 3139
2469static void noinline ecb_cold 3140noinline ecb_cold
3141static void
2470array_verify (EV_P_ W *ws, int cnt) 3142array_verify (EV_P_ W *ws, int cnt)
2471{ 3143{
2472 while (cnt--) 3144 while (cnt--)
2473 { 3145 {
2474 assert (("libev: active index mismatch", ev_active (ws [cnt]) == cnt + 1)); 3146 assert (("libev: active index mismatch", ev_active (ws [cnt]) == cnt + 1));
… …
2477} 3149}
2478#endif 3150#endif
2479 3151
2480#if EV_FEATURE_API 3152#if EV_FEATURE_API
2481void ecb_cold 3153void ecb_cold
2482ev_verify (EV_P) 3154ev_verify (EV_P) EV_THROW
2483{ 3155{
2484#if EV_VERIFY 3156#if EV_VERIFY
2485 int i; 3157 int i;
2486 WL w; 3158 WL w, w2;
2487 3159
2488 assert (activecnt >= -1); 3160 assert (activecnt >= -1);
2489 3161
2490 assert (fdchangemax >= fdchangecnt); 3162 assert (fdchangemax >= fdchangecnt);
2491 for (i = 0; i < fdchangecnt; ++i) 3163 for (i = 0; i < fdchangecnt; ++i)
2492 assert (("libev: negative fd in fdchanges", fdchanges [i] >= 0)); 3164 assert (("libev: negative fd in fdchanges", fdchanges [i] >= 0));
2493 3165
2494 assert (anfdmax >= 0); 3166 assert (anfdmax >= 0);
2495 for (i = 0; i < anfdmax; ++i) 3167 for (i = 0; i < anfdmax; ++i)
3168 {
3169 int j = 0;
3170
2496 for (w = anfds [i].head; w; w = w->next) 3171 for (w = w2 = anfds [i].head; w; w = w->next)
2497 { 3172 {
2498 verify_watcher (EV_A_ (W)w); 3173 verify_watcher (EV_A_ (W)w);
3174
3175 if (j++ & 1)
3176 {
3177 assert (("libev: io watcher list contains a loop", w != w2));
3178 w2 = w2->next;
3179 }
3180
2499 assert (("libev: inactive fd watcher on anfd list", ev_active (w) == 1)); 3181 assert (("libev: inactive fd watcher on anfd list", ev_active (w) == 1));
2500 assert (("libev: fd mismatch between watcher and anfd", ((ev_io *)w)->fd == i)); 3182 assert (("libev: fd mismatch between watcher and anfd", ((ev_io *)w)->fd == i));
2501 } 3183 }
3184 }
2502 3185
2503 assert (timermax >= timercnt); 3186 assert (timermax >= timercnt);
2504 verify_heap (EV_A_ timers, timercnt); 3187 verify_heap (EV_A_ timers, timercnt);
2505 3188
2506#if EV_PERIODIC_ENABLE 3189#if EV_PERIODIC_ENABLE
… …
2552#endif 3235#endif
2553} 3236}
2554#endif 3237#endif
2555 3238
2556#if EV_MULTIPLICITY 3239#if EV_MULTIPLICITY
3240ecb_cold
2557struct ev_loop * ecb_cold 3241struct ev_loop *
2558#else 3242#else
2559int 3243int
2560#endif 3244#endif
2561ev_default_loop (unsigned int flags) 3245ev_default_loop (unsigned int flags) EV_THROW
2562{ 3246{
2563 if (!ev_default_loop_ptr) 3247 if (!ev_default_loop_ptr)
2564 { 3248 {
2565#if EV_MULTIPLICITY 3249#if EV_MULTIPLICITY
2566 EV_P = ev_default_loop_ptr = &default_loop_struct; 3250 EV_P = ev_default_loop_ptr = &default_loop_struct;
… …
2585 3269
2586 return ev_default_loop_ptr; 3270 return ev_default_loop_ptr;
2587} 3271}
2588 3272
2589void 3273void
2590ev_loop_fork (EV_P) 3274ev_loop_fork (EV_P) EV_THROW
2591{ 3275{
2592 postfork = 1; /* must be in line with ev_default_fork */ 3276 postfork = 1;
2593} 3277}
2594 3278
2595/*****************************************************************************/ 3279/*****************************************************************************/
2596 3280
2597void 3281void
… …
2599{ 3283{
2600 EV_CB_INVOKE ((W)w, revents); 3284 EV_CB_INVOKE ((W)w, revents);
2601} 3285}
2602 3286
2603unsigned int 3287unsigned int
2604ev_pending_count (EV_P) 3288ev_pending_count (EV_P) EV_THROW
2605{ 3289{
2606 int pri; 3290 int pri;
2607 unsigned int count = 0; 3291 unsigned int count = 0;
2608 3292
2609 for (pri = NUMPRI; pri--; ) 3293 for (pri = NUMPRI; pri--; )
2610 count += pendingcnt [pri]; 3294 count += pendingcnt [pri];
2611 3295
2612 return count; 3296 return count;
2613} 3297}
2614 3298
2615void noinline 3299noinline
3300void
2616ev_invoke_pending (EV_P) 3301ev_invoke_pending (EV_P)
2617{ 3302{
2618 int pri; 3303 pendingpri = NUMPRI;
2619 3304
2620 for (pri = NUMPRI; pri--; ) 3305 while (pendingpri) /* pendingpri possibly gets modified in the inner loop */
3306 {
3307 --pendingpri;
3308
2621 while (pendingcnt [pri]) 3309 while (pendingcnt [pendingpri])
2622 { 3310 {
2623 ANPENDING *p = pendings [pri] + --pendingcnt [pri]; 3311 ANPENDING *p = pendings [pendingpri] + --pendingcnt [pendingpri];
2624 3312
2625 p->w->pending = 0; 3313 p->w->pending = 0;
2626 EV_CB_INVOKE (p->w, p->events); 3314 EV_CB_INVOKE (p->w, p->events);
2627 EV_FREQUENT_CHECK; 3315 EV_FREQUENT_CHECK;
2628 } 3316 }
3317 }
2629} 3318}
2630 3319
2631#if EV_IDLE_ENABLE 3320#if EV_IDLE_ENABLE
2632/* make idle watchers pending. this handles the "call-idle */ 3321/* make idle watchers pending. this handles the "call-idle */
2633/* only when higher priorities are idle" logic */ 3322/* only when higher priorities are idle" logic */
… …
2691 } 3380 }
2692} 3381}
2693 3382
2694#if EV_PERIODIC_ENABLE 3383#if EV_PERIODIC_ENABLE
2695 3384
2696static void noinline 3385noinline
3386static void
2697periodic_recalc (EV_P_ ev_periodic *w) 3387periodic_recalc (EV_P_ ev_periodic *w)
2698{ 3388{
2699 ev_tstamp interval = w->interval > MIN_INTERVAL ? w->interval : MIN_INTERVAL; 3389 ev_tstamp interval = w->interval > MIN_INTERVAL ? w->interval : MIN_INTERVAL;
2700 ev_tstamp at = w->offset + interval * ev_floor ((ev_rt_now - w->offset) / interval); 3390 ev_tstamp at = w->offset + interval * ev_floor ((ev_rt_now - w->offset) / interval);
2701 3391
… …
2723{ 3413{
2724 EV_FREQUENT_CHECK; 3414 EV_FREQUENT_CHECK;
2725 3415
2726 while (periodiccnt && ANHE_at (periodics [HEAP0]) < ev_rt_now) 3416 while (periodiccnt && ANHE_at (periodics [HEAP0]) < ev_rt_now)
2727 { 3417 {
2728 int feed_count = 0;
2729
2730 do 3418 do
2731 { 3419 {
2732 ev_periodic *w = (ev_periodic *)ANHE_w (periodics [HEAP0]); 3420 ev_periodic *w = (ev_periodic *)ANHE_w (periodics [HEAP0]);
2733 3421
2734 /*assert (("libev: inactive timer on periodic heap detected", ev_is_active (w)));*/ 3422 /*assert (("libev: inactive timer on periodic heap detected", ev_is_active (w)));*/
… …
2761 } 3449 }
2762} 3450}
2763 3451
2764/* simply recalculate all periodics */ 3452/* simply recalculate all periodics */
2765/* TODO: maybe ensure that at least one event happens when jumping forward? */ 3453/* TODO: maybe ensure that at least one event happens when jumping forward? */
2766static void noinline ecb_cold 3454noinline ecb_cold
3455static void
2767periodics_reschedule (EV_P) 3456periodics_reschedule (EV_P)
2768{ 3457{
2769 int i; 3458 int i;
2770 3459
2771 /* adjust periodics after time jump */ 3460 /* adjust periodics after time jump */
… …
2784 reheap (periodics, periodiccnt); 3473 reheap (periodics, periodiccnt);
2785} 3474}
2786#endif 3475#endif
2787 3476
2788/* adjust all timers by a given offset */ 3477/* adjust all timers by a given offset */
2789static void noinline ecb_cold 3478noinline ecb_cold
3479static void
2790timers_reschedule (EV_P_ ev_tstamp adjust) 3480timers_reschedule (EV_P_ ev_tstamp adjust)
2791{ 3481{
2792 int i; 3482 int i;
2793 3483
2794 for (i = 0; i < timercnt; ++i) 3484 for (i = 0; i < timercnt; ++i)
… …
2868 3558
2869 mn_now = ev_rt_now; 3559 mn_now = ev_rt_now;
2870 } 3560 }
2871} 3561}
2872 3562
2873void 3563int
2874ev_run (EV_P_ int flags) 3564ev_run (EV_P_ int flags)
2875{ 3565{
2876#if EV_FEATURE_API 3566#if EV_FEATURE_API
2877 ++loop_depth; 3567 ++loop_depth;
2878#endif 3568#endif
… …
2991#endif 3681#endif
2992 assert ((loop_done = EVBREAK_RECURSE, 1)); /* assert for side effect */ 3682 assert ((loop_done = EVBREAK_RECURSE, 1)); /* assert for side effect */
2993 backend_poll (EV_A_ waittime); 3683 backend_poll (EV_A_ waittime);
2994 assert ((loop_done = EVBREAK_CANCEL, 1)); /* assert for side effect */ 3684 assert ((loop_done = EVBREAK_CANCEL, 1)); /* assert for side effect */
2995 3685
2996 pipe_write_wanted = 0; /* just an optimsiation, no fence needed */ 3686 pipe_write_wanted = 0; /* just an optimisation, no fence needed */
2997 3687
3688 ECB_MEMORY_FENCE_ACQUIRE;
2998 if (pipe_write_skipped) 3689 if (pipe_write_skipped)
2999 { 3690 {
3000 assert (("libev: pipe_w not active, but pipe not written", ev_is_active (&pipe_w))); 3691 assert (("libev: pipe_w not active, but pipe not written", ev_is_active (&pipe_w)));
3001 ev_feed_event (EV_A_ &pipe_w, EV_CUSTOM); 3692 ev_feed_event (EV_A_ &pipe_w, EV_CUSTOM);
3002 } 3693 }
… …
3035 loop_done = EVBREAK_CANCEL; 3726 loop_done = EVBREAK_CANCEL;
3036 3727
3037#if EV_FEATURE_API 3728#if EV_FEATURE_API
3038 --loop_depth; 3729 --loop_depth;
3039#endif 3730#endif
3040}
3041 3731
3732 return activecnt;
3733}
3734
3042void 3735void
3043ev_break (EV_P_ int how) 3736ev_break (EV_P_ int how) EV_THROW
3044{ 3737{
3045 loop_done = how; 3738 loop_done = how;
3046} 3739}
3047 3740
3048void 3741void
3049ev_ref (EV_P) 3742ev_ref (EV_P) EV_THROW
3050{ 3743{
3051 ++activecnt; 3744 ++activecnt;
3052} 3745}
3053 3746
3054void 3747void
3055ev_unref (EV_P) 3748ev_unref (EV_P) EV_THROW
3056{ 3749{
3057 --activecnt; 3750 --activecnt;
3058} 3751}
3059 3752
3060void 3753void
3061ev_now_update (EV_P) 3754ev_now_update (EV_P) EV_THROW
3062{ 3755{
3063 time_update (EV_A_ 1e100); 3756 time_update (EV_A_ 1e100);
3064} 3757}
3065 3758
3066void 3759void
3067ev_suspend (EV_P) 3760ev_suspend (EV_P) EV_THROW
3068{ 3761{
3069 ev_now_update (EV_A); 3762 ev_now_update (EV_A);
3070} 3763}
3071 3764
3072void 3765void
3073ev_resume (EV_P) 3766ev_resume (EV_P) EV_THROW
3074{ 3767{
3075 ev_tstamp mn_prev = mn_now; 3768 ev_tstamp mn_prev = mn_now;
3076 3769
3077 ev_now_update (EV_A); 3770 ev_now_update (EV_A);
3078 timers_reschedule (EV_A_ mn_now - mn_prev); 3771 timers_reschedule (EV_A_ mn_now - mn_prev);
… …
3117 w->pending = 0; 3810 w->pending = 0;
3118 } 3811 }
3119} 3812}
3120 3813
3121int 3814int
3122ev_clear_pending (EV_P_ void *w) 3815ev_clear_pending (EV_P_ void *w) EV_THROW
3123{ 3816{
3124 W w_ = (W)w; 3817 W w_ = (W)w;
3125 int pending = w_->pending; 3818 int pending = w_->pending;
3126 3819
3127 if (expect_true (pending)) 3820 if (expect_true (pending))
… …
3159 w->active = 0; 3852 w->active = 0;
3160} 3853}
3161 3854
3162/*****************************************************************************/ 3855/*****************************************************************************/
3163 3856
3164void noinline 3857noinline
3858void
3165ev_io_start (EV_P_ ev_io *w) 3859ev_io_start (EV_P_ ev_io *w) EV_THROW
3166{ 3860{
3167 int fd = w->fd; 3861 int fd = w->fd;
3168 3862
3169 if (expect_false (ev_is_active (w))) 3863 if (expect_false (ev_is_active (w)))
3170 return; 3864 return;
… …
3176 3870
3177 ev_start (EV_A_ (W)w, 1); 3871 ev_start (EV_A_ (W)w, 1);
3178 array_needsize (ANFD, anfds, anfdmax, fd + 1, array_init_zero); 3872 array_needsize (ANFD, anfds, anfdmax, fd + 1, array_init_zero);
3179 wlist_add (&anfds[fd].head, (WL)w); 3873 wlist_add (&anfds[fd].head, (WL)w);
3180 3874
3875 /* common bug, apparently */
3876 assert (("libev: ev_io_start called with corrupted watcher", ((WL)w)->next != (WL)w));
3877
3181 fd_change (EV_A_ fd, w->events & EV__IOFDSET | EV_ANFD_REIFY); 3878 fd_change (EV_A_ fd, w->events & EV__IOFDSET | EV_ANFD_REIFY);
3182 w->events &= ~EV__IOFDSET; 3879 w->events &= ~EV__IOFDSET;
3183 3880
3184 EV_FREQUENT_CHECK; 3881 EV_FREQUENT_CHECK;
3185} 3882}
3186 3883
3187void noinline 3884noinline
3885void
3188ev_io_stop (EV_P_ ev_io *w) 3886ev_io_stop (EV_P_ ev_io *w) EV_THROW
3189{ 3887{
3190 clear_pending (EV_A_ (W)w); 3888 clear_pending (EV_A_ (W)w);
3191 if (expect_false (!ev_is_active (w))) 3889 if (expect_false (!ev_is_active (w)))
3192 return; 3890 return;
3193 3891
… …
3201 fd_change (EV_A_ w->fd, EV_ANFD_REIFY); 3899 fd_change (EV_A_ w->fd, EV_ANFD_REIFY);
3202 3900
3203 EV_FREQUENT_CHECK; 3901 EV_FREQUENT_CHECK;
3204} 3902}
3205 3903
3206void noinline 3904noinline
3905void
3207ev_timer_start (EV_P_ ev_timer *w) 3906ev_timer_start (EV_P_ ev_timer *w) EV_THROW
3208{ 3907{
3209 if (expect_false (ev_is_active (w))) 3908 if (expect_false (ev_is_active (w)))
3210 return; 3909 return;
3211 3910
3212 ev_at (w) += mn_now; 3911 ev_at (w) += mn_now;
… …
3225 EV_FREQUENT_CHECK; 3924 EV_FREQUENT_CHECK;
3226 3925
3227 /*assert (("libev: internal timer heap corruption", timers [ev_active (w)] == (WT)w));*/ 3926 /*assert (("libev: internal timer heap corruption", timers [ev_active (w)] == (WT)w));*/
3228} 3927}
3229 3928
3230void noinline 3929noinline
3930void
3231ev_timer_stop (EV_P_ ev_timer *w) 3931ev_timer_stop (EV_P_ ev_timer *w) EV_THROW
3232{ 3932{
3233 clear_pending (EV_A_ (W)w); 3933 clear_pending (EV_A_ (W)w);
3234 if (expect_false (!ev_is_active (w))) 3934 if (expect_false (!ev_is_active (w)))
3235 return; 3935 return;
3236 3936
… …
3255 ev_stop (EV_A_ (W)w); 3955 ev_stop (EV_A_ (W)w);
3256 3956
3257 EV_FREQUENT_CHECK; 3957 EV_FREQUENT_CHECK;
3258} 3958}
3259 3959
3260void noinline 3960noinline
3961void
3261ev_timer_again (EV_P_ ev_timer *w) 3962ev_timer_again (EV_P_ ev_timer *w) EV_THROW
3262{ 3963{
3263 EV_FREQUENT_CHECK; 3964 EV_FREQUENT_CHECK;
3965
3966 clear_pending (EV_A_ (W)w);
3264 3967
3265 if (ev_is_active (w)) 3968 if (ev_is_active (w))
3266 { 3969 {
3267 if (w->repeat) 3970 if (w->repeat)
3268 { 3971 {
… …
3281 3984
3282 EV_FREQUENT_CHECK; 3985 EV_FREQUENT_CHECK;
3283} 3986}
3284 3987
3285ev_tstamp 3988ev_tstamp
3286ev_timer_remaining (EV_P_ ev_timer *w) 3989ev_timer_remaining (EV_P_ ev_timer *w) EV_THROW
3287{ 3990{
3288 return ev_at (w) - (ev_is_active (w) ? mn_now : 0.); 3991 return ev_at (w) - (ev_is_active (w) ? mn_now : 0.);
3289} 3992}
3290 3993
3291#if EV_PERIODIC_ENABLE 3994#if EV_PERIODIC_ENABLE
3292void noinline 3995noinline
3996void
3293ev_periodic_start (EV_P_ ev_periodic *w) 3997ev_periodic_start (EV_P_ ev_periodic *w) EV_THROW
3294{ 3998{
3295 if (expect_false (ev_is_active (w))) 3999 if (expect_false (ev_is_active (w)))
3296 return; 4000 return;
3297 4001
3298 if (w->reschedule_cb) 4002 if (w->reschedule_cb)
… …
3317 EV_FREQUENT_CHECK; 4021 EV_FREQUENT_CHECK;
3318 4022
3319 /*assert (("libev: internal periodic heap corruption", ANHE_w (periodics [ev_active (w)]) == (WT)w));*/ 4023 /*assert (("libev: internal periodic heap corruption", ANHE_w (periodics [ev_active (w)]) == (WT)w));*/
3320} 4024}
3321 4025
3322void noinline 4026noinline
4027void
3323ev_periodic_stop (EV_P_ ev_periodic *w) 4028ev_periodic_stop (EV_P_ ev_periodic *w) EV_THROW
3324{ 4029{
3325 clear_pending (EV_A_ (W)w); 4030 clear_pending (EV_A_ (W)w);
3326 if (expect_false (!ev_is_active (w))) 4031 if (expect_false (!ev_is_active (w)))
3327 return; 4032 return;
3328 4033
… …
3345 ev_stop (EV_A_ (W)w); 4050 ev_stop (EV_A_ (W)w);
3346 4051
3347 EV_FREQUENT_CHECK; 4052 EV_FREQUENT_CHECK;
3348} 4053}
3349 4054
3350void noinline 4055noinline
4056void
3351ev_periodic_again (EV_P_ ev_periodic *w) 4057ev_periodic_again (EV_P_ ev_periodic *w) EV_THROW
3352{ 4058{
3353 /* TODO: use adjustheap and recalculation */ 4059 /* TODO: use adjustheap and recalculation */
3354 ev_periodic_stop (EV_A_ w); 4060 ev_periodic_stop (EV_A_ w);
3355 ev_periodic_start (EV_A_ w); 4061 ev_periodic_start (EV_A_ w);
3356} 4062}
… …
3360# define SA_RESTART 0 4066# define SA_RESTART 0
3361#endif 4067#endif
3362 4068
3363#if EV_SIGNAL_ENABLE 4069#if EV_SIGNAL_ENABLE
3364 4070
3365void noinline 4071noinline
4072void
3366ev_signal_start (EV_P_ ev_signal *w) 4073ev_signal_start (EV_P_ ev_signal *w) EV_THROW
3367{ 4074{
3368 if (expect_false (ev_is_active (w))) 4075 if (expect_false (ev_is_active (w)))
3369 return; 4076 return;
3370 4077
3371 assert (("libev: ev_signal_start called with illegal signal number", w->signum > 0 && w->signum < EV_NSIG)); 4078 assert (("libev: ev_signal_start called with illegal signal number", w->signum > 0 && w->signum < EV_NSIG));
… …
3373#if EV_MULTIPLICITY 4080#if EV_MULTIPLICITY
3374 assert (("libev: a signal must not be attached to two different loops", 4081 assert (("libev: a signal must not be attached to two different loops",
3375 !signals [w->signum - 1].loop || signals [w->signum - 1].loop == loop)); 4082 !signals [w->signum - 1].loop || signals [w->signum - 1].loop == loop));
3376 4083
3377 signals [w->signum - 1].loop = EV_A; 4084 signals [w->signum - 1].loop = EV_A;
4085 ECB_MEMORY_FENCE_RELEASE;
3378#endif 4086#endif
3379 4087
3380 EV_FREQUENT_CHECK; 4088 EV_FREQUENT_CHECK;
3381 4089
3382#if EV_USE_SIGNALFD 4090#if EV_USE_SIGNALFD
… …
3441 } 4149 }
3442 4150
3443 EV_FREQUENT_CHECK; 4151 EV_FREQUENT_CHECK;
3444} 4152}
3445 4153
3446void noinline 4154noinline
4155void
3447ev_signal_stop (EV_P_ ev_signal *w) 4156ev_signal_stop (EV_P_ ev_signal *w) EV_THROW
3448{ 4157{
3449 clear_pending (EV_A_ (W)w); 4158 clear_pending (EV_A_ (W)w);
3450 if (expect_false (!ev_is_active (w))) 4159 if (expect_false (!ev_is_active (w)))
3451 return; 4160 return;
3452 4161
… …
3483#endif 4192#endif
3484 4193
3485#if EV_CHILD_ENABLE 4194#if EV_CHILD_ENABLE
3486 4195
3487void 4196void
3488ev_child_start (EV_P_ ev_child *w) 4197ev_child_start (EV_P_ ev_child *w) EV_THROW
3489{ 4198{
3490#if EV_MULTIPLICITY 4199#if EV_MULTIPLICITY
3491 assert (("libev: child watchers are only supported in the default loop", loop == ev_default_loop_ptr)); 4200 assert (("libev: child watchers are only supported in the default loop", loop == ev_default_loop_ptr));
3492#endif 4201#endif
3493 if (expect_false (ev_is_active (w))) 4202 if (expect_false (ev_is_active (w)))
… …
3500 4209
3501 EV_FREQUENT_CHECK; 4210 EV_FREQUENT_CHECK;
3502} 4211}
3503 4212
3504void 4213void
3505ev_child_stop (EV_P_ ev_child *w) 4214ev_child_stop (EV_P_ ev_child *w) EV_THROW
3506{ 4215{
3507 clear_pending (EV_A_ (W)w); 4216 clear_pending (EV_A_ (W)w);
3508 if (expect_false (!ev_is_active (w))) 4217 if (expect_false (!ev_is_active (w)))
3509 return; 4218 return;
3510 4219
… …
3527 4236
3528#define DEF_STAT_INTERVAL 5.0074891 4237#define DEF_STAT_INTERVAL 5.0074891
3529#define NFS_STAT_INTERVAL 30.1074891 /* for filesystems potentially failing inotify */ 4238#define NFS_STAT_INTERVAL 30.1074891 /* for filesystems potentially failing inotify */
3530#define MIN_STAT_INTERVAL 0.1074891 4239#define MIN_STAT_INTERVAL 0.1074891
3531 4240
3532static void noinline stat_timer_cb (EV_P_ ev_timer *w_, int revents); 4241noinline static void stat_timer_cb (EV_P_ ev_timer *w_, int revents);
3533 4242
3534#if EV_USE_INOTIFY 4243#if EV_USE_INOTIFY
3535 4244
3536/* the * 2 is to allow for alignment padding, which for some reason is >> 8 */ 4245/* the * 2 is to allow for alignment padding, which for some reason is >> 8 */
3537# define EV_INOTIFY_BUFSIZE (sizeof (struct inotify_event) * 2 + NAME_MAX) 4246# define EV_INOTIFY_BUFSIZE (sizeof (struct inotify_event) * 2 + NAME_MAX)
3538 4247
3539static void noinline 4248noinline
4249static void
3540infy_add (EV_P_ ev_stat *w) 4250infy_add (EV_P_ ev_stat *w)
3541{ 4251{
3542 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); 4252 w->wd = inotify_add_watch (fs_fd, w->path,
4253 IN_ATTRIB | IN_DELETE_SELF | IN_MOVE_SELF | IN_MODIFY
4254 | IN_CREATE | IN_DELETE | IN_MOVED_FROM | IN_MOVED_TO
4255 | IN_DONT_FOLLOW | IN_MASK_ADD);
3543 4256
3544 if (w->wd >= 0) 4257 if (w->wd >= 0)
3545 { 4258 {
3546 struct statfs sfs; 4259 struct statfs sfs;
3547 4260
… …
3551 4264
3552 if (!fs_2625) 4265 if (!fs_2625)
3553 w->timer.repeat = w->interval ? w->interval : DEF_STAT_INTERVAL; 4266 w->timer.repeat = w->interval ? w->interval : DEF_STAT_INTERVAL;
3554 else if (!statfs (w->path, &sfs) 4267 else if (!statfs (w->path, &sfs)
3555 && (sfs.f_type == 0x1373 /* devfs */ 4268 && (sfs.f_type == 0x1373 /* devfs */
4269 || sfs.f_type == 0x4006 /* fat */
4270 || sfs.f_type == 0x4d44 /* msdos */
3556 || sfs.f_type == 0xEF53 /* ext2/3 */ 4271 || sfs.f_type == 0xEF53 /* ext2/3 */
4272 || sfs.f_type == 0x72b6 /* jffs2 */
4273 || sfs.f_type == 0x858458f6 /* ramfs */
4274 || sfs.f_type == 0x5346544e /* ntfs */
3557 || sfs.f_type == 0x3153464a /* jfs */ 4275 || sfs.f_type == 0x3153464a /* jfs */
4276 || sfs.f_type == 0x9123683e /* btrfs */
3558 || sfs.f_type == 0x52654973 /* reiser3 */ 4277 || sfs.f_type == 0x52654973 /* reiser3 */
3559 || sfs.f_type == 0x01021994 /* tempfs */ 4278 || sfs.f_type == 0x01021994 /* tmpfs */
3560 || sfs.f_type == 0x58465342 /* xfs */)) 4279 || sfs.f_type == 0x58465342 /* xfs */))
3561 w->timer.repeat = 0.; /* filesystem is local, kernel new enough */ 4280 w->timer.repeat = 0.; /* filesystem is local, kernel new enough */
3562 else 4281 else
3563 w->timer.repeat = w->interval ? w->interval : NFS_STAT_INTERVAL; /* remote, use reduced frequency */ 4282 w->timer.repeat = w->interval ? w->interval : NFS_STAT_INTERVAL; /* remote, use reduced frequency */
3564 } 4283 }
… …
3599 if (ev_is_active (&w->timer)) ev_ref (EV_A); 4318 if (ev_is_active (&w->timer)) ev_ref (EV_A);
3600 ev_timer_again (EV_A_ &w->timer); 4319 ev_timer_again (EV_A_ &w->timer);
3601 if (ev_is_active (&w->timer)) ev_unref (EV_A); 4320 if (ev_is_active (&w->timer)) ev_unref (EV_A);
3602} 4321}
3603 4322
3604static void noinline 4323noinline
4324static void
3605infy_del (EV_P_ ev_stat *w) 4325infy_del (EV_P_ ev_stat *w)
3606{ 4326{
3607 int slot; 4327 int slot;
3608 int wd = w->wd; 4328 int wd = w->wd;
3609 4329
… …
3616 4336
3617 /* remove this watcher, if others are watching it, they will rearm */ 4337 /* remove this watcher, if others are watching it, they will rearm */
3618 inotify_rm_watch (fs_fd, wd); 4338 inotify_rm_watch (fs_fd, wd);
3619} 4339}
3620 4340
3621static void noinline 4341noinline
4342static void
3622infy_wd (EV_P_ int slot, int wd, struct inotify_event *ev) 4343infy_wd (EV_P_ int slot, int wd, struct inotify_event *ev)
3623{ 4344{
3624 if (slot < 0) 4345 if (slot < 0)
3625 /* overflow, need to check for all hash slots */ 4346 /* overflow, need to check for all hash slots */
3626 for (slot = 0; slot < (EV_INOTIFY_HASHSIZE); ++slot) 4347 for (slot = 0; slot < (EV_INOTIFY_HASHSIZE); ++slot)
… …
3662 infy_wd (EV_A_ ev->wd, ev->wd, ev); 4383 infy_wd (EV_A_ ev->wd, ev->wd, ev);
3663 ofs += sizeof (struct inotify_event) + ev->len; 4384 ofs += sizeof (struct inotify_event) + ev->len;
3664 } 4385 }
3665} 4386}
3666 4387
3667inline_size void ecb_cold 4388inline_size ecb_cold
4389void
3668ev_check_2625 (EV_P) 4390ev_check_2625 (EV_P)
3669{ 4391{
3670 /* kernels < 2.6.25 are borked 4392 /* kernels < 2.6.25 are borked
3671 * http://www.ussg.indiana.edu/hypermail/linux/kernel/0711.3/1208.html 4393 * http://www.ussg.indiana.edu/hypermail/linux/kernel/0711.3/1208.html
3672 */ 4394 */
… …
3677} 4399}
3678 4400
3679inline_size int 4401inline_size int
3680infy_newfd (void) 4402infy_newfd (void)
3681{ 4403{
3682#if defined (IN_CLOEXEC) && defined (IN_NONBLOCK) 4404#if defined IN_CLOEXEC && defined IN_NONBLOCK
3683 int fd = inotify_init1 (IN_CLOEXEC | IN_NONBLOCK); 4405 int fd = inotify_init1 (IN_CLOEXEC | IN_NONBLOCK);
3684 if (fd >= 0) 4406 if (fd >= 0)
3685 return fd; 4407 return fd;
3686#endif 4408#endif
3687 return inotify_init (); 4409 return inotify_init ();
… …
3762#else 4484#else
3763# define EV_LSTAT(p,b) lstat (p, b) 4485# define EV_LSTAT(p,b) lstat (p, b)
3764#endif 4486#endif
3765 4487
3766void 4488void
3767ev_stat_stat (EV_P_ ev_stat *w) 4489ev_stat_stat (EV_P_ ev_stat *w) EV_THROW
3768{ 4490{
3769 if (lstat (w->path, &w->attr) < 0) 4491 if (lstat (w->path, &w->attr) < 0)
3770 w->attr.st_nlink = 0; 4492 w->attr.st_nlink = 0;
3771 else if (!w->attr.st_nlink) 4493 else if (!w->attr.st_nlink)
3772 w->attr.st_nlink = 1; 4494 w->attr.st_nlink = 1;
3773} 4495}
3774 4496
3775static void noinline 4497noinline
4498static void
3776stat_timer_cb (EV_P_ ev_timer *w_, int revents) 4499stat_timer_cb (EV_P_ ev_timer *w_, int revents)
3777{ 4500{
3778 ev_stat *w = (ev_stat *)(((char *)w_) - offsetof (ev_stat, timer)); 4501 ev_stat *w = (ev_stat *)(((char *)w_) - offsetof (ev_stat, timer));
3779 4502
3780 ev_statdata prev = w->attr; 4503 ev_statdata prev = w->attr;
… …
3811 ev_feed_event (EV_A_ w, EV_STAT); 4534 ev_feed_event (EV_A_ w, EV_STAT);
3812 } 4535 }
3813} 4536}
3814 4537
3815void 4538void
3816ev_stat_start (EV_P_ ev_stat *w) 4539ev_stat_start (EV_P_ ev_stat *w) EV_THROW
3817{ 4540{
3818 if (expect_false (ev_is_active (w))) 4541 if (expect_false (ev_is_active (w)))
3819 return; 4542 return;
3820 4543
3821 ev_stat_stat (EV_A_ w); 4544 ev_stat_stat (EV_A_ w);
… …
3842 4565
3843 EV_FREQUENT_CHECK; 4566 EV_FREQUENT_CHECK;
3844} 4567}
3845 4568
3846void 4569void
3847ev_stat_stop (EV_P_ ev_stat *w) 4570ev_stat_stop (EV_P_ ev_stat *w) EV_THROW
3848{ 4571{
3849 clear_pending (EV_A_ (W)w); 4572 clear_pending (EV_A_ (W)w);
3850 if (expect_false (!ev_is_active (w))) 4573 if (expect_false (!ev_is_active (w)))
3851 return; 4574 return;
3852 4575
… …
3868} 4591}
3869#endif 4592#endif
3870 4593
3871#if EV_IDLE_ENABLE 4594#if EV_IDLE_ENABLE
3872void 4595void
3873ev_idle_start (EV_P_ ev_idle *w) 4596ev_idle_start (EV_P_ ev_idle *w) EV_THROW
3874{ 4597{
3875 if (expect_false (ev_is_active (w))) 4598 if (expect_false (ev_is_active (w)))
3876 return; 4599 return;
3877 4600
3878 pri_adjust (EV_A_ (W)w); 4601 pri_adjust (EV_A_ (W)w);
… …
3891 4614
3892 EV_FREQUENT_CHECK; 4615 EV_FREQUENT_CHECK;
3893} 4616}
3894 4617
3895void 4618void
3896ev_idle_stop (EV_P_ ev_idle *w) 4619ev_idle_stop (EV_P_ ev_idle *w) EV_THROW
3897{ 4620{
3898 clear_pending (EV_A_ (W)w); 4621 clear_pending (EV_A_ (W)w);
3899 if (expect_false (!ev_is_active (w))) 4622 if (expect_false (!ev_is_active (w)))
3900 return; 4623 return;
3901 4624
… …
3915} 4638}
3916#endif 4639#endif
3917 4640
3918#if EV_PREPARE_ENABLE 4641#if EV_PREPARE_ENABLE
3919void 4642void
3920ev_prepare_start (EV_P_ ev_prepare *w) 4643ev_prepare_start (EV_P_ ev_prepare *w) EV_THROW
3921{ 4644{
3922 if (expect_false (ev_is_active (w))) 4645 if (expect_false (ev_is_active (w)))
3923 return; 4646 return;
3924 4647
3925 EV_FREQUENT_CHECK; 4648 EV_FREQUENT_CHECK;
… …
3930 4653
3931 EV_FREQUENT_CHECK; 4654 EV_FREQUENT_CHECK;
3932} 4655}
3933 4656
3934void 4657void
3935ev_prepare_stop (EV_P_ ev_prepare *w) 4658ev_prepare_stop (EV_P_ ev_prepare *w) EV_THROW
3936{ 4659{
3937 clear_pending (EV_A_ (W)w); 4660 clear_pending (EV_A_ (W)w);
3938 if (expect_false (!ev_is_active (w))) 4661 if (expect_false (!ev_is_active (w)))
3939 return; 4662 return;
3940 4663
… …
3953} 4676}
3954#endif 4677#endif
3955 4678
3956#if EV_CHECK_ENABLE 4679#if EV_CHECK_ENABLE
3957void 4680void
3958ev_check_start (EV_P_ ev_check *w) 4681ev_check_start (EV_P_ ev_check *w) EV_THROW
3959{ 4682{
3960 if (expect_false (ev_is_active (w))) 4683 if (expect_false (ev_is_active (w)))
3961 return; 4684 return;
3962 4685
3963 EV_FREQUENT_CHECK; 4686 EV_FREQUENT_CHECK;
… …
3968 4691
3969 EV_FREQUENT_CHECK; 4692 EV_FREQUENT_CHECK;
3970} 4693}
3971 4694
3972void 4695void
3973ev_check_stop (EV_P_ ev_check *w) 4696ev_check_stop (EV_P_ ev_check *w) EV_THROW
3974{ 4697{
3975 clear_pending (EV_A_ (W)w); 4698 clear_pending (EV_A_ (W)w);
3976 if (expect_false (!ev_is_active (w))) 4699 if (expect_false (!ev_is_active (w)))
3977 return; 4700 return;
3978 4701
… …
3990 EV_FREQUENT_CHECK; 4713 EV_FREQUENT_CHECK;
3991} 4714}
3992#endif 4715#endif
3993 4716
3994#if EV_EMBED_ENABLE 4717#if EV_EMBED_ENABLE
3995void noinline 4718noinline
4719void
3996ev_embed_sweep (EV_P_ ev_embed *w) 4720ev_embed_sweep (EV_P_ ev_embed *w) EV_THROW
3997{ 4721{
3998 ev_run (w->other, EVRUN_NOWAIT); 4722 ev_run (w->other, EVRUN_NOWAIT);
3999} 4723}
4000 4724
4001static void 4725static void
… …
4049 ev_idle_stop (EV_A_ idle); 4773 ev_idle_stop (EV_A_ idle);
4050} 4774}
4051#endif 4775#endif
4052 4776
4053void 4777void
4054ev_embed_start (EV_P_ ev_embed *w) 4778ev_embed_start (EV_P_ ev_embed *w) EV_THROW
4055{ 4779{
4056 if (expect_false (ev_is_active (w))) 4780 if (expect_false (ev_is_active (w)))
4057 return; 4781 return;
4058 4782
4059 { 4783 {
… …
4080 4804
4081 EV_FREQUENT_CHECK; 4805 EV_FREQUENT_CHECK;
4082} 4806}
4083 4807
4084void 4808void
4085ev_embed_stop (EV_P_ ev_embed *w) 4809ev_embed_stop (EV_P_ ev_embed *w) EV_THROW
4086{ 4810{
4087 clear_pending (EV_A_ (W)w); 4811 clear_pending (EV_A_ (W)w);
4088 if (expect_false (!ev_is_active (w))) 4812 if (expect_false (!ev_is_active (w)))
4089 return; 4813 return;
4090 4814
… …
4100} 4824}
4101#endif 4825#endif
4102 4826
4103#if EV_FORK_ENABLE 4827#if EV_FORK_ENABLE
4104void 4828void
4105ev_fork_start (EV_P_ ev_fork *w) 4829ev_fork_start (EV_P_ ev_fork *w) EV_THROW
4106{ 4830{
4107 if (expect_false (ev_is_active (w))) 4831 if (expect_false (ev_is_active (w)))
4108 return; 4832 return;
4109 4833
4110 EV_FREQUENT_CHECK; 4834 EV_FREQUENT_CHECK;
… …
4115 4839
4116 EV_FREQUENT_CHECK; 4840 EV_FREQUENT_CHECK;
4117} 4841}
4118 4842
4119void 4843void
4120ev_fork_stop (EV_P_ ev_fork *w) 4844ev_fork_stop (EV_P_ ev_fork *w) EV_THROW
4121{ 4845{
4122 clear_pending (EV_A_ (W)w); 4846 clear_pending (EV_A_ (W)w);
4123 if (expect_false (!ev_is_active (w))) 4847 if (expect_false (!ev_is_active (w)))
4124 return; 4848 return;
4125 4849
… …
4138} 4862}
4139#endif 4863#endif
4140 4864
4141#if EV_CLEANUP_ENABLE 4865#if EV_CLEANUP_ENABLE
4142void 4866void
4143ev_cleanup_start (EV_P_ ev_cleanup *w) 4867ev_cleanup_start (EV_P_ ev_cleanup *w) EV_THROW
4144{ 4868{
4145 if (expect_false (ev_is_active (w))) 4869 if (expect_false (ev_is_active (w)))
4146 return; 4870 return;
4147 4871
4148 EV_FREQUENT_CHECK; 4872 EV_FREQUENT_CHECK;
… …
4155 ev_unref (EV_A); 4879 ev_unref (EV_A);
4156 EV_FREQUENT_CHECK; 4880 EV_FREQUENT_CHECK;
4157} 4881}
4158 4882
4159void 4883void
4160ev_cleanup_stop (EV_P_ ev_cleanup *w) 4884ev_cleanup_stop (EV_P_ ev_cleanup *w) EV_THROW
4161{ 4885{
4162 clear_pending (EV_A_ (W)w); 4886 clear_pending (EV_A_ (W)w);
4163 if (expect_false (!ev_is_active (w))) 4887 if (expect_false (!ev_is_active (w)))
4164 return; 4888 return;
4165 4889
… …
4179} 4903}
4180#endif 4904#endif
4181 4905
4182#if EV_ASYNC_ENABLE 4906#if EV_ASYNC_ENABLE
4183void 4907void
4184ev_async_start (EV_P_ ev_async *w) 4908ev_async_start (EV_P_ ev_async *w) EV_THROW
4185{ 4909{
4186 if (expect_false (ev_is_active (w))) 4910 if (expect_false (ev_is_active (w)))
4187 return; 4911 return;
4188 4912
4189 w->sent = 0; 4913 w->sent = 0;
… …
4198 4922
4199 EV_FREQUENT_CHECK; 4923 EV_FREQUENT_CHECK;
4200} 4924}
4201 4925
4202void 4926void
4203ev_async_stop (EV_P_ ev_async *w) 4927ev_async_stop (EV_P_ ev_async *w) EV_THROW
4204{ 4928{
4205 clear_pending (EV_A_ (W)w); 4929 clear_pending (EV_A_ (W)w);
4206 if (expect_false (!ev_is_active (w))) 4930 if (expect_false (!ev_is_active (w)))
4207 return; 4931 return;
4208 4932
… …
4219 4943
4220 EV_FREQUENT_CHECK; 4944 EV_FREQUENT_CHECK;
4221} 4945}
4222 4946
4223void 4947void
4224ev_async_send (EV_P_ ev_async *w) 4948ev_async_send (EV_P_ ev_async *w) EV_THROW
4225{ 4949{
4226 w->sent = 1; 4950 w->sent = 1;
4227 evpipe_write (EV_A_ &async_pending); 4951 evpipe_write (EV_A_ &async_pending);
4228} 4952}
4229#endif 4953#endif
… …
4266 4990
4267 once_cb (EV_A_ once, revents | ev_clear_pending (EV_A_ &once->io)); 4991 once_cb (EV_A_ once, revents | ev_clear_pending (EV_A_ &once->io));
4268} 4992}
4269 4993
4270void 4994void
4271ev_once (EV_P_ int fd, int events, ev_tstamp timeout, void (*cb)(int revents, void *arg), void *arg) 4995ev_once (EV_P_ int fd, int events, ev_tstamp timeout, void (*cb)(int revents, void *arg), void *arg) EV_THROW
4272{ 4996{
4273 struct ev_once *once = (struct ev_once *)ev_malloc (sizeof (struct ev_once)); 4997 struct ev_once *once = (struct ev_once *)ev_malloc (sizeof (struct ev_once));
4274 4998
4275 if (expect_false (!once)) 4999 if (expect_false (!once))
4276 { 5000 {
… …
4297} 5021}
4298 5022
4299/*****************************************************************************/ 5023/*****************************************************************************/
4300 5024
4301#if EV_WALK_ENABLE 5025#if EV_WALK_ENABLE
4302void ecb_cold 5026ecb_cold
5027void
4303ev_walk (EV_P_ int types, void (*cb)(EV_P_ int type, void *w)) 5028ev_walk (EV_P_ int types, void (*cb)(EV_P_ int type, void *w)) EV_THROW
4304{ 5029{
4305 int i, j; 5030 int i, j;
4306 ev_watcher_list *wl, *wn; 5031 ev_watcher_list *wl, *wn;
4307 5032
4308 if (types & (EV_IO | EV_EMBED)) 5033 if (types & (EV_IO | EV_EMBED))

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