[ViewVC] Diff of: cvs/libev/ev.c

Comparing libev/ev.c (file contents):
Revision 1.450 by root, Mon Oct 8 15:43:35 2012 UTC vs.
Revision 1.477 by root, Sun Aug 9 00:13:28 2015 UTC

…		…
1	/*	1	/*
2	* libev event processing core, watcher management	2	* libev event processing core, watcher management
3	*	3	*
4	* Copyright (c) 2007,2008,2009,2010,2011,2012 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
…		…
241	#elif defined SIGARRAYSIZE	241	#elif defined SIGARRAYSIZE
242	# define EV_NSIG (SIGARRAYSIZE) /* Assume ary[SIGARRAYSIZE] */	242	# define EV_NSIG (SIGARRAYSIZE) /* Assume ary[SIGARRAYSIZE] */
243	#elif defined _sys_nsig	243	#elif defined _sys_nsig
244	# define EV_NSIG (_sys_nsig) /* Solaris 2.5 */	244	# define EV_NSIG (_sys_nsig) /* Solaris 2.5 */
245	#else	245	#else
246	# error "unable to find value for NSIG, please report"	246	# define EV_NSIG (8 * sizeof (sigset_t) + 1)
247	/* to make it compile regardless, just remove the above line, */
248	/* but consider reporting it, too! :) */
249	# define EV_NSIG 65
250	#endif	247	#endif
251		248
252	#ifndef EV_USE_FLOOR	249	#ifndef EV_USE_FLOOR
253	# define EV_USE_FLOOR 0	250	# define EV_USE_FLOOR 0
254	#endif	251	#endif
255		252
256	#ifndef EV_USE_CLOCK_SYSCALL	253	#ifndef EV_USE_CLOCK_SYSCALL
257	# if __linux && __GLIBC__ >= 2	254	# if __linux && __GLIBC__ == 2 && __GLIBC_MINOR__ < 17
258	# define EV_USE_CLOCK_SYSCALL EV_FEATURE_OS	255	# define EV_USE_CLOCK_SYSCALL EV_FEATURE_OS
259	# else	256	# else
260	# define EV_USE_CLOCK_SYSCALL 0	257	# define EV_USE_CLOCK_SYSCALL 0
		258	# endif
		259	#endif
		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
261	# endif	267	# endif
262	#endif	268	#endif
263		269
264	#ifndef EV_USE_MONOTONIC	270	#ifndef EV_USE_MONOTONIC
265	# if defined _POSIX_MONOTONIC_CLOCK && _POSIX_MONOTONIC_CLOCK >= 0	271	# if defined _POSIX_MONOTONIC_CLOCK && _POSIX_MONOTONIC_CLOCK >= 0
…		…
355	# define EV_USE_4HEAP EV_FEATURE_DATA	361	# define EV_USE_4HEAP EV_FEATURE_DATA
356	#endif	362	#endif
357		363
358	#ifndef EV_HEAP_CACHE_AT	364	#ifndef EV_HEAP_CACHE_AT
359	# define EV_HEAP_CACHE_AT EV_FEATURE_DATA	365	# define EV_HEAP_CACHE_AT EV_FEATURE_DATA
		366	#endif
		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
360	#endif	382	#endif
361		383
362	/* 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, */
363	/* which makes programs even slower. might work on other unices, too. */	385	/* which makes programs even slower. might work on other unices, too. */
364	#if EV_USE_CLOCK_SYSCALL	386	#if EV_USE_CLOCK_SYSCALL
…		…
372	# define EV_USE_CLOCK_SYSCALL 0	394	# define EV_USE_CLOCK_SYSCALL 0
373	# endif	395	# endif
374	#endif	396	#endif
375		397
376	/* 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 */
377
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		399
384	#ifndef CLOCK_MONOTONIC	400	#ifndef CLOCK_MONOTONIC
385	# undef EV_USE_MONOTONIC	401	# undef EV_USE_MONOTONIC
386	# define EV_USE_MONOTONIC 0	402	# define EV_USE_MONOTONIC 0
387	#endif	403	#endif
…		…
475	/* 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 */
476	/* ECB.H BEGIN */	492	/* ECB.H BEGIN */
477	/*	493	/*
478	* libecb - http://software.schmorp.de/pkg/libecb	494	* libecb - http://software.schmorp.de/pkg/libecb
479	*	495	*
480	* Copyright (©) 2009-2012 Marc Alexander Lehmann <libecb@schmorp.de>	496	* Copyright (©) 2009-2015 Marc Alexander Lehmann <libecb@schmorp.de>
481	* Copyright (©) 2011 Emanuele Giaquinta	497	* Copyright (©) 2011 Emanuele Giaquinta
482	* All rights reserved.	498	* All rights reserved.
483	*	499	*
484	* 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-
485	* tion, are permitted provided that the following conditions are met:	501	* tion, are permitted provided that the following conditions are met:
…		…
499	* 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;
500	* OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,	516	* OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
501	* WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTH-	517	* WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTH-
502	* 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
503	* 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.
504	*/	531	*/
505		532
506	#ifndef ECB_H	533	#ifndef ECB_H
507	#define ECB_H	534	#define ECB_H
508		535
509	/* 16 bits major, 16 bits minor */	536	/* 16 bits major, 16 bits minor */
510	#define ECB_VERSION 0x00010002	537	#define ECB_VERSION 0x00010004
511		538
512	#ifdef _WIN32	539	#ifdef _WIN32
513	typedef signed char int8_t;	540	typedef signed char int8_t;
514	typedef unsigned char uint8_t;	541	typedef unsigned char uint8_t;
515	typedef signed short int16_t;	542	typedef signed short int16_t;
…		…
539	#else	566	#else
540	#define ECB_PTRSIZE 4	567	#define ECB_PTRSIZE 4
541	#endif	568	#endif
542	#endif	569	#endif
543		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
		581	#endif
		582
544	/* many compilers define _GNUC_ to some versions but then only implement	583	/* many compilers define _GNUC_ to some versions but then only implement
545	* what their idiot authors think are the "more important" extensions,	584	* what their idiot authors think are the "more important" extensions,
546	* causing enormous grief in return for some better fake benchmark numbers.	585	* causing enormous grief in return for some better fake benchmark numbers.
547	* or so.	586	* or so.
548	* 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
549	* 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.
550	*/	589	*/
551	#ifndef ECB_GCC_VERSION
552	#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__
553	#define ECB_GCC_VERSION(major,minor) 0	591	#define ECB_GCC_VERSION(major,minor) 0
554	#else	592	#else
555	#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)))
556	#endif	594	#endif
557	#endif
558		595
559	#define ECB_C (__STDC__+0) /* this assumes that __STDC__ is either empty or a number */	596	#define ECB_CLANG_VERSION(major,minor) (__clang_major__ > (major) \|\| (__clang_major__ == (major) && __clang_minor__ >= (minor)))
560	#define ECB_C99 (__STDC_VERSION__ >= 199901L)	597
561	#define ECB_C11 (__STDC_VERSION__ >= 201112L)	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
562	#define ECB_CPP (__cplusplus+0)	610	#define ECB_CPP (__cplusplus+0)
563	#define ECB_CPP11 (__cplusplus >= 201103L)	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)
564		623
565	#if ECB_CPP	624	#if ECB_CPP
566	#define ECB_EXTERN_C extern "C"	625	#define ECB_EXTERN_C extern "C"
567	#define ECB_EXTERN_C_BEG ECB_EXTERN_C {	626	#define ECB_EXTERN_C_BEG ECB_EXTERN_C {
568	#define ECB_EXTERN_C_END }	627	#define ECB_EXTERN_C_END }
…		…
583		642
584	#if ECB_NO_SMP	643	#if ECB_NO_SMP
585	#define ECB_MEMORY_FENCE do { } while (0)	644	#define ECB_MEMORY_FENCE do { } while (0)
586	#endif	645	#endif
587		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
588	#ifndef ECB_MEMORY_FENCE	652	#ifndef ECB_MEMORY_FENCE
589	#if ECB_GCC_VERSION(2,5) \|\| defined __INTEL_COMPILER \|\| (__llvm__ && __GNUC__) \|\| __SUNPRO_C >= 0x5110 \|\| __SUNPRO_CC >= 0x5110	653	#if ECB_GCC_VERSION(2,5) \|\| defined __INTEL_COMPILER \|\| (__llvm__ && __GNUC__) \|\| __SUNPRO_C >= 0x5110 \|\| __SUNPRO_CC >= 0x5110
590	#if __i386 \|\| __i386__	654	#if __i386 \|\| __i386__
591	#define ECB_MEMORY_FENCE __asm__ __volatile__ ("lock; orb $0, -1(%%esp)" : : : "memory")	655	#define ECB_MEMORY_FENCE __asm__ __volatile__ ("lock; orb $0, -1(%%esp)" : : : "memory")
592	#define ECB_MEMORY_FENCE_ACQUIRE __asm__ __volatile__ ("" : : : "memory")	656	#define ECB_MEMORY_FENCE_ACQUIRE __asm__ __volatile__ ("" : : : "memory")
593	#define ECB_MEMORY_FENCE_RELEASE __asm__ __volatile__ ("")	657	#define ECB_MEMORY_FENCE_RELEASE __asm__ __volatile__ ("")
594	#elif __amd64 \|\| __amd64__ \|\| __x86_64 \|\| __x86_64__	658	#elif ECB_GCC_AMD64
595	#define ECB_MEMORY_FENCE __asm__ __volatile__ ("mfence" : : : "memory")	659	#define ECB_MEMORY_FENCE __asm__ __volatile__ ("mfence" : : : "memory")
596	#define ECB_MEMORY_FENCE_ACQUIRE __asm__ __volatile__ ("" : : : "memory")	660	#define ECB_MEMORY_FENCE_ACQUIRE __asm__ __volatile__ ("" : : : "memory")
597	#define ECB_MEMORY_FENCE_RELEASE __asm__ __volatile__ ("")	661	#define ECB_MEMORY_FENCE_RELEASE __asm__ __volatile__ ("")
598	#elif __powerpc__ \|\| __ppc__ \|\| __powerpc64__ \|\| __ppc64__	662	#elif __powerpc__ \|\| __ppc__ \|\| __powerpc64__ \|\| __ppc64__
599	#define ECB_MEMORY_FENCE __asm__ __volatile__ ("sync" : : : "memory")	663	#define ECB_MEMORY_FENCE __asm__ __volatile__ ("sync" : : : "memory")
…		…
601	\|\| defined __ARM_ARCH_6K__ \|\| defined __ARM_ARCH_6ZK__	665	\|\| defined __ARM_ARCH_6K__ \|\| defined __ARM_ARCH_6ZK__
602	#define ECB_MEMORY_FENCE __asm__ __volatile__ ("mcr p15,0,%0,c7,c10,5" : : "r" (0) : "memory")	666	#define ECB_MEMORY_FENCE __asm__ __volatile__ ("mcr p15,0,%0,c7,c10,5" : : "r" (0) : "memory")
603	#elif defined __ARM_ARCH_7__ \|\| defined __ARM_ARCH_7A__ \	667	#elif defined __ARM_ARCH_7__ \|\| defined __ARM_ARCH_7A__ \
604	\|\| defined __ARM_ARCH_7M__ \|\| defined __ARM_ARCH_7R__	668	\|\| defined __ARM_ARCH_7M__ \|\| defined __ARM_ARCH_7R__
605	#define ECB_MEMORY_FENCE __asm__ __volatile__ ("dmb" : : : "memory")	669	#define ECB_MEMORY_FENCE __asm__ __volatile__ ("dmb" : : : "memory")
606	#elif __sparc \|\| __sparc__	670	#elif __aarch64__
		671	#define ECB_MEMORY_FENCE __asm__ __volatile__ ("dmb ish" : : : "memory")
		672	#elif (__sparc \|\| __sparc__) && !(__sparc_v8__ \|\| defined __sparcv8)
607	#define ECB_MEMORY_FENCE __asm__ __volatile__ ("membar #LoadStore \| #LoadLoad \| #StoreStore \| #StoreLoad" : : : "memory")	673	#define ECB_MEMORY_FENCE __asm__ __volatile__ ("membar #LoadStore \| #LoadLoad \| #StoreStore \| #StoreLoad" : : : "memory")
608	#define ECB_MEMORY_FENCE_ACQUIRE __asm__ __volatile__ ("membar #LoadStore \| #LoadLoad" : : : "memory")	674	#define ECB_MEMORY_FENCE_ACQUIRE __asm__ __volatile__ ("membar #LoadStore \| #LoadLoad" : : : "memory")
609	#define ECB_MEMORY_FENCE_RELEASE __asm__ __volatile__ ("membar #LoadStore \| #StoreStore")	675	#define ECB_MEMORY_FENCE_RELEASE __asm__ __volatile__ ("membar #LoadStore \| #StoreStore")
610	#elif defined __s390__ \|\| defined __s390x__	676	#elif defined __s390__ \|\| defined __s390x__
611	#define ECB_MEMORY_FENCE __asm__ __volatile__ ("bcr 15,0" : : : "memory")	677	#define ECB_MEMORY_FENCE __asm__ __volatile__ ("bcr 15,0" : : : "memory")
612	#elif defined __mips__	678	#elif defined __mips__
		679	/* GNU/Linux emulates sync on mips1 architectures, so we force its use */
		680	/* anybody else who still uses mips1 is supposed to send in their version, with detection code. */
613	#define ECB_MEMORY_FENCE __asm__ __volatile__ ("sync" : : : "memory")	681	#define ECB_MEMORY_FENCE __asm__ __volatile__ (".set mips2; sync; .set mips0" : : : "memory")
614	#elif defined __alpha__	682	#elif defined __alpha__
615	#define ECB_MEMORY_FENCE __asm__ __volatile__ ("mb" : : : "memory")	683	#define ECB_MEMORY_FENCE __asm__ __volatile__ ("mb" : : : "memory")
616	#elif defined __hppa__	684	#elif defined __hppa__
617	#define ECB_MEMORY_FENCE __asm__ __volatile__ ("" : : : "memory")	685	#define ECB_MEMORY_FENCE __asm__ __volatile__ ("" : : : "memory")
618	#define ECB_MEMORY_FENCE_RELEASE __asm__ __volatile__ ("")	686	#define ECB_MEMORY_FENCE_RELEASE __asm__ __volatile__ ("")
619	#elif defined __ia64__	687	#elif defined __ia64__
620	#define ECB_MEMORY_FENCE __asm__ __volatile__ ("mf" : : : "memory")	688	#define ECB_MEMORY_FENCE __asm__ __volatile__ ("mf" : : : "memory")
		689	#elif defined __m68k__
		690	#define ECB_MEMORY_FENCE __asm__ __volatile__ ("" : : : "memory")
		691	#elif defined __m88k__
		692	#define ECB_MEMORY_FENCE __asm__ __volatile__ ("tb1 0,%%r0,128" : : : "memory")
		693	#elif defined __sh__
		694	#define ECB_MEMORY_FENCE __asm__ __volatile__ ("" : : : "memory")
621	#endif	695	#endif
622	#endif	696	#endif
623	#endif	697	#endif
624		698
625	#ifndef ECB_MEMORY_FENCE	699	#ifndef ECB_MEMORY_FENCE
626	#if ECB_GCC_VERSION(4,7)	700	#if ECB_GCC_VERSION(4,7)
627	/* see comment below (stdatomic.h) about the C11 memory model. */	701	/* see comment below (stdatomic.h) about the C11 memory model. */
628	#define ECB_MEMORY_FENCE __atomic_thread_fence (__ATOMIC_SEQ_CST)	702	#define ECB_MEMORY_FENCE __atomic_thread_fence (__ATOMIC_SEQ_CST)
		703	#define ECB_MEMORY_FENCE_ACQUIRE __atomic_thread_fence (__ATOMIC_ACQUIRE)
		704	#define ECB_MEMORY_FENCE_RELEASE __atomic_thread_fence (__ATOMIC_RELEASE)
629		705
630	/* The __has_feature syntax from clang is so misdesigned that we cannot use it	706	#elif ECB_CLANG_EXTENSION(c_atomic)
631	* without risking compile time errors with other compilers. We could
632	* define our own ecb_clang_has_feature, but I just can't be bothered to work
633	* around this shit time and again.
634	* #elif defined __clang && __has_feature (cxx_atomic)
635	* // see comment below (stdatomic.h) about the C11 memory model.	707	/* see comment below (stdatomic.h) about the C11 memory model. */
636	* #define ECB_MEMORY_FENCE __c11_atomic_thread_fence (__ATOMIC_SEQ_CST)	708	#define ECB_MEMORY_FENCE __c11_atomic_thread_fence (__ATOMIC_SEQ_CST)
637	*/	709	#define ECB_MEMORY_FENCE_ACQUIRE __c11_atomic_thread_fence (__ATOMIC_ACQUIRE)
		710	#define ECB_MEMORY_FENCE_RELEASE __c11_atomic_thread_fence (__ATOMIC_RELEASE)
638		711
639	#elif ECB_GCC_VERSION(4,4) \|\| defined __INTEL_COMPILER \|\| defined __clang__	712	#elif ECB_GCC_VERSION(4,4) \|\| defined __INTEL_COMPILER \|\| defined __clang__
640	#define ECB_MEMORY_FENCE __sync_synchronize ()	713	#define ECB_MEMORY_FENCE __sync_synchronize ()
		714	#elif _MSC_VER >= 1500 /* VC++ 2008 */
		715	/* apparently, microsoft broke all the memory barrier stuff in Visual Studio 2008... */
		716	#pragma intrinsic(_ReadBarrier,_WriteBarrier,_ReadWriteBarrier)
		717	#define ECB_MEMORY_FENCE _ReadWriteBarrier (); MemoryBarrier()
		718	#define ECB_MEMORY_FENCE_ACQUIRE _ReadWriteBarrier (); MemoryBarrier() /* according to msdn, _ReadBarrier is not a load fence */
		719	#define ECB_MEMORY_FENCE_RELEASE _WriteBarrier (); MemoryBarrier()
641	#elif _MSC_VER >= 1400 /* VC++ 2005 */	720	#elif _MSC_VER >= 1400 /* VC++ 2005 */
642	#pragma intrinsic(_ReadBarrier,_WriteBarrier,_ReadWriteBarrier)	721	#pragma intrinsic(_ReadBarrier,_WriteBarrier,_ReadWriteBarrier)
643	#define ECB_MEMORY_FENCE _ReadWriteBarrier ()	722	#define ECB_MEMORY_FENCE _ReadWriteBarrier ()
644	#define ECB_MEMORY_FENCE_ACQUIRE _ReadWriteBarrier () /* according to msdn, _ReadBarrier is not a load fence */	723	#define ECB_MEMORY_FENCE_ACQUIRE _ReadWriteBarrier () /* according to msdn, _ReadBarrier is not a load fence */
645	#define ECB_MEMORY_FENCE_RELEASE _WriteBarrier ()	724	#define ECB_MEMORY_FENCE_RELEASE _WriteBarrier ()
…		…
665	/* any fence other than seq_cst, which isn't very efficient for us. */	744	/* any fence other than seq_cst, which isn't very efficient for us. */
666	/* Why that is, we don't know - either the C11 memory model is quite useless */	745	/* Why that is, we don't know - either the C11 memory model is quite useless */
667	/* for most usages, or gcc and clang have a bug */	746	/* for most usages, or gcc and clang have a bug */
668	/* I currently lean towards the latter, and inefficiently implement */	747	/* I currently lean towards the latter, and inefficiently implement */
669	/* all three of ecb's fences as a seq_cst fence */	748	/* all three of ecb's fences as a seq_cst fence */
		749	/* Update, gcc-4.8 generates mfence for all c++ fences, but nothing */
		750	/* for all __atomic_thread_fence's except seq_cst */
670	#define ECB_MEMORY_FENCE atomic_thread_fence (memory_order_seq_cst)	751	#define ECB_MEMORY_FENCE atomic_thread_fence (memory_order_seq_cst)
671	#endif	752	#endif
672	#endif	753	#endif
673		754
674	#ifndef ECB_MEMORY_FENCE	755	#ifndef ECB_MEMORY_FENCE
…		…
697	#define ECB_MEMORY_FENCE_RELEASE ECB_MEMORY_FENCE	778	#define ECB_MEMORY_FENCE_RELEASE ECB_MEMORY_FENCE
698	#endif	779	#endif
699		780
700	/*****************************************************************************/	781	/*****************************************************************************/
701		782
702	#if __cplusplus	783	#if ECB_CPP
703	#define ecb_inline static inline	784	#define ecb_inline static inline
704	#elif ECB_GCC_VERSION(2,5)	785	#elif ECB_GCC_VERSION(2,5)
705	#define ecb_inline static __inline__	786	#define ecb_inline static __inline__
706	#elif ECB_C99	787	#elif ECB_C99
707	#define ecb_inline static inline	788	#define ecb_inline static inline
…		…
721		802
722	#define ECB_CONCAT_(a, b) a ## b	803	#define ECB_CONCAT_(a, b) a ## b
723	#define ECB_CONCAT(a, b) ECB_CONCAT_(a, b)	804	#define ECB_CONCAT(a, b) ECB_CONCAT_(a, b)
724	#define ECB_STRINGIFY_(a) # a	805	#define ECB_STRINGIFY_(a) # a
725	#define ECB_STRINGIFY(a) ECB_STRINGIFY_(a)	806	#define ECB_STRINGIFY(a) ECB_STRINGIFY_(a)
		807	#define ECB_STRINGIFY_EXPR(expr) ((expr), ECB_STRINGIFY_ (expr))
726		808
727	#define ecb_function_ ecb_inline	809	#define ecb_function_ ecb_inline
728		810
729	#if ECB_GCC_VERSION(3,1)	811	#if ECB_GCC_VERSION(3,1) \|\| ECB_CLANG_VERSION(2,8)
730	#define ecb_attribute(attrlist) __attribute__(attrlist)	812	#define ecb_attribute(attrlist) __attribute__ (attrlist)
		813	#else
		814	#define ecb_attribute(attrlist)
		815	#endif
		816
		817	#if ECB_GCC_VERSION(3,1) \|\| ECB_CLANG_BUILTIN(__builtin_constant_p)
731	#define ecb_is_constant(expr) __builtin_constant_p (expr)	818	#define ecb_is_constant(expr) __builtin_constant_p (expr)
		819	#else
		820	/* possible C11 impl for integral types
		821	typedef struct ecb_is_constant_struct ecb_is_constant_struct;
		822	#define ecb_is_constant(expr) _Generic ((1 ? (struct ecb_is_constant_struct )0 : (void )((expr) - (expr)), ecb_is_constant_struct : 0, default: 1)) /
		823
		824	#define ecb_is_constant(expr) 0
		825	#endif
		826
		827	#if ECB_GCC_VERSION(3,1) \|\| ECB_CLANG_BUILTIN(__builtin_expect)
732	#define ecb_expect(expr,value) __builtin_expect ((expr),(value))	828	#define ecb_expect(expr,value) __builtin_expect ((expr),(value))
		829	#else
		830	#define ecb_expect(expr,value) (expr)
		831	#endif
		832
		833	#if ECB_GCC_VERSION(3,1) \|\| ECB_CLANG_BUILTIN(__builtin_prefetch)
733	#define ecb_prefetch(addr,rw,locality) __builtin_prefetch (addr, rw, locality)	834	#define ecb_prefetch(addr,rw,locality) __builtin_prefetch (addr, rw, locality)
734	#else	835	#else
735	#define ecb_attribute(attrlist)
736	#define ecb_is_constant(expr) 0
737	#define ecb_expect(expr,value) (expr)
738	#define ecb_prefetch(addr,rw,locality)	836	#define ecb_prefetch(addr,rw,locality)
739	#endif	837	#endif
740		838
741	/* no emulation for ecb_decltype */	839	/* no emulation for ecb_decltype */
742	#if ECB_GCC_VERSION(4,5)	840	#if ECB_CPP11
		841	// older implementations might have problems with decltype(x)::type, work around it
		842	template<class T> struct ecb_decltype_t { typedef T type; };
743	#define ecb_decltype(x) __decltype(x)	843	#define ecb_decltype(x) ecb_decltype_t<decltype (x)>::type
744	#elif ECB_GCC_VERSION(3,0)	844	#elif ECB_GCC_VERSION(3,0) \|\| ECB_CLANG_VERSION(2,8)
745	#define ecb_decltype(x) __typeof(x)	845	#define ecb_decltype(x) __typeof__ (x)
746	#endif	846	#endif
747		847
		848	#if _MSC_VER >= 1300
		849	#define ecb_deprecated __declspec (deprecated)
		850	#else
		851	#define ecb_deprecated ecb_attribute ((__deprecated__))
		852	#endif
		853
		854	#if _MSC_VER >= 1500
		855	#define ecb_deprecated_message(msg) __declspec (deprecated (msg))
		856	#elif ECB_GCC_VERSION(4,5)
		857	#define ecb_deprecated_message(msg) ecb_attribute ((__deprecated__ (msg))
		858	#else
		859	#define ecb_deprecated_message(msg) ecb_deprecated
		860	#endif
		861
		862	#if _MSC_VER >= 1400
		863	#define ecb_noinline __declspec (noinline)
		864	#else
748	#define ecb_noinline ecb_attribute ((__noinline__))	865	#define ecb_noinline ecb_attribute ((__noinline__))
		866	#endif
		867
749	#define ecb_unused ecb_attribute ((__unused__))	868	#define ecb_unused ecb_attribute ((__unused__))
750	#define ecb_const ecb_attribute ((__const__))	869	#define ecb_const ecb_attribute ((__const__))
751	#define ecb_pure ecb_attribute ((__pure__))	870	#define ecb_pure ecb_attribute ((__pure__))
752		871
753	#if ECB_C11	872	#if ECB_C11 \|\| __IBMC_NORETURN
		873	/* http://www-01.ibm.com/support/knowledgecenter/SSGH3R_13.1.0/com.ibm.xlcpp131.aix.doc/language_ref/noreturn.html */
754	#define ecb_noreturn _Noreturn	874	#define ecb_noreturn _Noreturn
		875	#elif ECB_CPP11
		876	#define ecb_noreturn [[noreturn]]
		877	#elif _MSC_VER >= 1200
		878	/* http://msdn.microsoft.com/en-us/library/k6ktzx3s.aspx */
		879	#define ecb_noreturn __declspec (noreturn)
755	#else	880	#else
756	#define ecb_noreturn ecb_attribute ((__noreturn__))	881	#define ecb_noreturn ecb_attribute ((__noreturn__))
757	#endif	882	#endif
758		883
759	#if ECB_GCC_VERSION(4,3)	884	#if ECB_GCC_VERSION(4,3)
…		…
774	/* for compatibility to the rest of the world */	899	/* for compatibility to the rest of the world */
775	#define ecb_likely(expr) ecb_expect_true (expr)	900	#define ecb_likely(expr) ecb_expect_true (expr)
776	#define ecb_unlikely(expr) ecb_expect_false (expr)	901	#define ecb_unlikely(expr) ecb_expect_false (expr)
777		902
778	/* count trailing zero bits and count # of one bits */	903	/* count trailing zero bits and count # of one bits */
779	#if ECB_GCC_VERSION(3,4)	904	#if ECB_GCC_VERSION(3,4) \
		905	\|\| (ECB_CLANG_BUILTIN(__builtin_clz) && ECB_CLANG_BUILTIN(__builtin_clzll) \
		906	&& ECB_CLANG_BUILTIN(__builtin_ctz) && ECB_CLANG_BUILTIN(__builtin_ctzll) \
		907	&& ECB_CLANG_BUILTIN(__builtin_popcount))
780	/* we assume int == 32 bit, long == 32 or 64 bit and long long == 64 bit */	908	/* we assume int == 32 bit, long == 32 or 64 bit and long long == 64 bit */
781	#define ecb_ld32(x) (__builtin_clz (x) ^ 31)	909	#define ecb_ld32(x) (__builtin_clz (x) ^ 31)
782	#define ecb_ld64(x) (__builtin_clzll (x) ^ 63)	910	#define ecb_ld64(x) (__builtin_clzll (x) ^ 63)
783	#define ecb_ctz32(x) __builtin_ctz (x)	911	#define ecb_ctz32(x) __builtin_ctz (x)
784	#define ecb_ctz64(x) __builtin_ctzll (x)	912	#define ecb_ctz64(x) __builtin_ctzll (x)
785	#define ecb_popcount32(x) __builtin_popcount (x)	913	#define ecb_popcount32(x) __builtin_popcount (x)
786	/* no popcountll */	914	/* no popcountll */
787	#else	915	#else
788	ecb_function_ int ecb_ctz32 (uint32_t x) ecb_const;	916	ecb_function_ ecb_const int ecb_ctz32 (uint32_t x);
789	ecb_function_ int	917	ecb_function_ ecb_const int
790	ecb_ctz32 (uint32_t x)	918	ecb_ctz32 (uint32_t x)
791	{	919	{
792	int r = 0;	920	int r = 0;
793		921
794	x &= ~x + 1; /* this isolates the lowest bit */	922	x &= ~x + 1; /* this isolates the lowest bit */
…		…
808	#endif	936	#endif
809		937
810	return r;	938	return r;
811	}	939	}
812		940
813	ecb_function_ int ecb_ctz64 (uint64_t x) ecb_const;	941	ecb_function_ ecb_const int ecb_ctz64 (uint64_t x);
814	ecb_function_ int	942	ecb_function_ ecb_const int
815	ecb_ctz64 (uint64_t x)	943	ecb_ctz64 (uint64_t x)
816	{	944	{
817	int shift = x & 0xffffffffU ? 0 : 32;	945	int shift = x & 0xffffffffU ? 0 : 32;
818	return ecb_ctz32 (x >> shift) + shift;	946	return ecb_ctz32 (x >> shift) + shift;
819	}	947	}
820		948
821	ecb_function_ int ecb_popcount32 (uint32_t x) ecb_const;	949	ecb_function_ ecb_const int ecb_popcount32 (uint32_t x);
822	ecb_function_ int	950	ecb_function_ ecb_const int
823	ecb_popcount32 (uint32_t x)	951	ecb_popcount32 (uint32_t x)
824	{	952	{
825	x -= (x >> 1) & 0x55555555;	953	x -= (x >> 1) & 0x55555555;
826	x = ((x >> 2) & 0x33333333) + (x & 0x33333333);	954	x = ((x >> 2) & 0x33333333) + (x & 0x33333333);
827	x = ((x >> 4) + x) & 0x0f0f0f0f;	955	x = ((x >> 4) + x) & 0x0f0f0f0f;
828	x *= 0x01010101;	956	x *= 0x01010101;
829		957
830	return x >> 24;	958	return x >> 24;
831	}	959	}
832		960
833	ecb_function_ int ecb_ld32 (uint32_t x) ecb_const;	961	ecb_function_ ecb_const int ecb_ld32 (uint32_t x);
834	ecb_function_ int ecb_ld32 (uint32_t x)	962	ecb_function_ ecb_const int ecb_ld32 (uint32_t x)
835	{	963	{
836	int r = 0;	964	int r = 0;
837		965
838	if (x >> 16) { x >>= 16; r += 16; }	966	if (x >> 16) { x >>= 16; r += 16; }
839	if (x >> 8) { x >>= 8; r += 8; }	967	if (x >> 8) { x >>= 8; r += 8; }
…		…
842	if (x >> 1) { r += 1; }	970	if (x >> 1) { r += 1; }
843		971
844	return r;	972	return r;
845	}	973	}
846		974
847	ecb_function_ int ecb_ld64 (uint64_t x) ecb_const;	975	ecb_function_ ecb_const int ecb_ld64 (uint64_t x);
848	ecb_function_ int ecb_ld64 (uint64_t x)	976	ecb_function_ ecb_const int ecb_ld64 (uint64_t x)
849	{	977	{
850	int r = 0;	978	int r = 0;
851		979
852	if (x >> 32) { x >>= 32; r += 32; }	980	if (x >> 32) { x >>= 32; r += 32; }
853		981
854	return r + ecb_ld32 (x);	982	return r + ecb_ld32 (x);
855	}	983	}
856	#endif	984	#endif
857		985
858	ecb_function_ ecb_bool ecb_is_pot32 (uint32_t x) ecb_const;	986	ecb_function_ ecb_const ecb_bool ecb_is_pot32 (uint32_t x);
859	ecb_function_ ecb_bool ecb_is_pot32 (uint32_t x) { return !(x & (x - 1)); }	987	ecb_function_ ecb_const ecb_bool ecb_is_pot32 (uint32_t x) { return !(x & (x - 1)); }
860	ecb_function_ ecb_bool ecb_is_pot64 (uint64_t x) ecb_const;	988	ecb_function_ ecb_const ecb_bool ecb_is_pot64 (uint64_t x);
861	ecb_function_ ecb_bool ecb_is_pot64 (uint64_t x) { return !(x & (x - 1)); }	989	ecb_function_ ecb_const ecb_bool ecb_is_pot64 (uint64_t x) { return !(x & (x - 1)); }
862		990
863	ecb_function_ uint8_t ecb_bitrev8 (uint8_t x) ecb_const;	991	ecb_function_ ecb_const uint8_t ecb_bitrev8 (uint8_t x);
864	ecb_function_ uint8_t ecb_bitrev8 (uint8_t x)	992	ecb_function_ ecb_const uint8_t ecb_bitrev8 (uint8_t x)
865	{	993	{
866	return ( (x * 0x0802U & 0x22110U)	994	return ( (x * 0x0802U & 0x22110U)
867	\| (x * 0x8020U & 0x88440U)) * 0x10101U >> 16;	995	\| (x * 0x8020U & 0x88440U)) * 0x10101U >> 16;
868	}	996	}
869		997
870	ecb_function_ uint16_t ecb_bitrev16 (uint16_t x) ecb_const;	998	ecb_function_ ecb_const uint16_t ecb_bitrev16 (uint16_t x);
871	ecb_function_ uint16_t ecb_bitrev16 (uint16_t x)	999	ecb_function_ ecb_const uint16_t ecb_bitrev16 (uint16_t x)
872	{	1000	{
873	x = ((x >> 1) & 0x5555) \| ((x & 0x5555) << 1);	1001	x = ((x >> 1) & 0x5555) \| ((x & 0x5555) << 1);
874	x = ((x >> 2) & 0x3333) \| ((x & 0x3333) << 2);	1002	x = ((x >> 2) & 0x3333) \| ((x & 0x3333) << 2);
875	x = ((x >> 4) & 0x0f0f) \| ((x & 0x0f0f) << 4);	1003	x = ((x >> 4) & 0x0f0f) \| ((x & 0x0f0f) << 4);
876	x = ( x >> 8 ) \| ( x << 8);	1004	x = ( x >> 8 ) \| ( x << 8);
877		1005
878	return x;	1006	return x;
879	}	1007	}
880		1008
881	ecb_function_ uint32_t ecb_bitrev32 (uint32_t x) ecb_const;	1009	ecb_function_ ecb_const uint32_t ecb_bitrev32 (uint32_t x);
882	ecb_function_ uint32_t ecb_bitrev32 (uint32_t x)	1010	ecb_function_ ecb_const uint32_t ecb_bitrev32 (uint32_t x)
883	{	1011	{
884	x = ((x >> 1) & 0x55555555) \| ((x & 0x55555555) << 1);	1012	x = ((x >> 1) & 0x55555555) \| ((x & 0x55555555) << 1);
885	x = ((x >> 2) & 0x33333333) \| ((x & 0x33333333) << 2);	1013	x = ((x >> 2) & 0x33333333) \| ((x & 0x33333333) << 2);
886	x = ((x >> 4) & 0x0f0f0f0f) \| ((x & 0x0f0f0f0f) << 4);	1014	x = ((x >> 4) & 0x0f0f0f0f) \| ((x & 0x0f0f0f0f) << 4);
887	x = ((x >> 8) & 0x00ff00ff) \| ((x & 0x00ff00ff) << 8);	1015	x = ((x >> 8) & 0x00ff00ff) \| ((x & 0x00ff00ff) << 8);
…		…
890	return x;	1018	return x;
891	}	1019	}
892		1020
893	/* popcount64 is only available on 64 bit cpus as gcc builtin */	1021	/* popcount64 is only available on 64 bit cpus as gcc builtin */
894	/* so for this version we are lazy */	1022	/* so for this version we are lazy */
895	ecb_function_ int ecb_popcount64 (uint64_t x) ecb_const;	1023	ecb_function_ ecb_const int ecb_popcount64 (uint64_t x);
896	ecb_function_ int	1024	ecb_function_ ecb_const int
897	ecb_popcount64 (uint64_t x)	1025	ecb_popcount64 (uint64_t x)
898	{	1026	{
899	return ecb_popcount32 (x) + ecb_popcount32 (x >> 32);	1027	return ecb_popcount32 (x) + ecb_popcount32 (x >> 32);
900	}	1028	}
901		1029
902	ecb_inline uint8_t ecb_rotl8 (uint8_t x, unsigned int count) ecb_const;	1030	ecb_inline ecb_const uint8_t ecb_rotl8 (uint8_t x, unsigned int count);
903	ecb_inline uint8_t ecb_rotr8 (uint8_t x, unsigned int count) ecb_const;	1031	ecb_inline ecb_const uint8_t ecb_rotr8 (uint8_t x, unsigned int count);
904	ecb_inline uint16_t ecb_rotl16 (uint16_t x, unsigned int count) ecb_const;	1032	ecb_inline ecb_const uint16_t ecb_rotl16 (uint16_t x, unsigned int count);
905	ecb_inline uint16_t ecb_rotr16 (uint16_t x, unsigned int count) ecb_const;	1033	ecb_inline ecb_const uint16_t ecb_rotr16 (uint16_t x, unsigned int count);
906	ecb_inline uint32_t ecb_rotl32 (uint32_t x, unsigned int count) ecb_const;	1034	ecb_inline ecb_const uint32_t ecb_rotl32 (uint32_t x, unsigned int count);
907	ecb_inline uint32_t ecb_rotr32 (uint32_t x, unsigned int count) ecb_const;	1035	ecb_inline ecb_const uint32_t ecb_rotr32 (uint32_t x, unsigned int count);
908	ecb_inline uint64_t ecb_rotl64 (uint64_t x, unsigned int count) ecb_const;	1036	ecb_inline ecb_const uint64_t ecb_rotl64 (uint64_t x, unsigned int count);
909	ecb_inline uint64_t ecb_rotr64 (uint64_t x, unsigned int count) ecb_const;	1037	ecb_inline ecb_const uint64_t ecb_rotr64 (uint64_t x, unsigned int count);
910		1038
911	ecb_inline uint8_t ecb_rotl8 (uint8_t x, unsigned int count) { return (x >> ( 8 - count)) \| (x << count); }	1039	ecb_inline ecb_const uint8_t ecb_rotl8 (uint8_t x, unsigned int count) { return (x >> ( 8 - count)) \| (x << count); }
912	ecb_inline uint8_t ecb_rotr8 (uint8_t x, unsigned int count) { return (x << ( 8 - count)) \| (x >> count); }	1040	ecb_inline ecb_const uint8_t ecb_rotr8 (uint8_t x, unsigned int count) { return (x << ( 8 - count)) \| (x >> count); }
913	ecb_inline uint16_t ecb_rotl16 (uint16_t x, unsigned int count) { return (x >> (16 - count)) \| (x << count); }	1041	ecb_inline ecb_const uint16_t ecb_rotl16 (uint16_t x, unsigned int count) { return (x >> (16 - count)) \| (x << count); }
914	ecb_inline uint16_t ecb_rotr16 (uint16_t x, unsigned int count) { return (x << (16 - count)) \| (x >> count); }	1042	ecb_inline ecb_const uint16_t ecb_rotr16 (uint16_t x, unsigned int count) { return (x << (16 - count)) \| (x >> count); }
915	ecb_inline uint32_t ecb_rotl32 (uint32_t x, unsigned int count) { return (x >> (32 - count)) \| (x << count); }	1043	ecb_inline ecb_const uint32_t ecb_rotl32 (uint32_t x, unsigned int count) { return (x >> (32 - count)) \| (x << count); }
916	ecb_inline uint32_t ecb_rotr32 (uint32_t x, unsigned int count) { return (x << (32 - count)) \| (x >> count); }	1044	ecb_inline ecb_const uint32_t ecb_rotr32 (uint32_t x, unsigned int count) { return (x << (32 - count)) \| (x >> count); }
917	ecb_inline uint64_t ecb_rotl64 (uint64_t x, unsigned int count) { return (x >> (64 - count)) \| (x << count); }	1045	ecb_inline ecb_const uint64_t ecb_rotl64 (uint64_t x, unsigned int count) { return (x >> (64 - count)) \| (x << count); }
918	ecb_inline uint64_t ecb_rotr64 (uint64_t x, unsigned int count) { return (x << (64 - count)) \| (x >> count); }	1046	ecb_inline ecb_const uint64_t ecb_rotr64 (uint64_t x, unsigned int count) { return (x << (64 - count)) \| (x >> count); }
919		1047
920	#if ECB_GCC_VERSION(4,3)	1048	#if ECB_GCC_VERSION(4,3) \|\| (ECB_CLANG_BUILTIN(__builtin_bswap32) && ECB_CLANG_BUILTIN(__builtin_bswap64))
		1049	#if ECB_GCC_VERSION(4,8) \|\| ECB_CLANG_BUILTIN(__builtin_bswap16)
		1050	#define ecb_bswap16(x) __builtin_bswap16 (x)
		1051	#else
921	#define ecb_bswap16(x) (__builtin_bswap32 (x) >> 16)	1052	#define ecb_bswap16(x) (__builtin_bswap32 (x) >> 16)
		1053	#endif
922	#define ecb_bswap32(x) __builtin_bswap32 (x)	1054	#define ecb_bswap32(x) __builtin_bswap32 (x)
923	#define ecb_bswap64(x) __builtin_bswap64 (x)	1055	#define ecb_bswap64(x) __builtin_bswap64 (x)
		1056	#elif _MSC_VER
		1057	#include <stdlib.h>
		1058	#define ecb_bswap16(x) ((uint16_t)_byteswap_ushort ((uint16_t)(x)))
		1059	#define ecb_bswap32(x) ((uint32_t)_byteswap_ulong ((uint32_t)(x)))
		1060	#define ecb_bswap64(x) ((uint64_t)_byteswap_uint64 ((uint64_t)(x)))
924	#else	1061	#else
925	ecb_function_ uint16_t ecb_bswap16 (uint16_t x) ecb_const;	1062	ecb_function_ ecb_const uint16_t ecb_bswap16 (uint16_t x);
926	ecb_function_ uint16_t	1063	ecb_function_ ecb_const uint16_t
927	ecb_bswap16 (uint16_t x)	1064	ecb_bswap16 (uint16_t x)
928	{	1065	{
929	return ecb_rotl16 (x, 8);	1066	return ecb_rotl16 (x, 8);
930	}	1067	}
931		1068
932	ecb_function_ uint32_t ecb_bswap32 (uint32_t x) ecb_const;	1069	ecb_function_ ecb_const uint32_t ecb_bswap32 (uint32_t x);
933	ecb_function_ uint32_t	1070	ecb_function_ ecb_const uint32_t
934	ecb_bswap32 (uint32_t x)	1071	ecb_bswap32 (uint32_t x)
935	{	1072	{
936	return (((uint32_t)ecb_bswap16 (x)) << 16) \| ecb_bswap16 (x >> 16);	1073	return (((uint32_t)ecb_bswap16 (x)) << 16) \| ecb_bswap16 (x >> 16);
937	}	1074	}
938		1075
939	ecb_function_ uint64_t ecb_bswap64 (uint64_t x) ecb_const;	1076	ecb_function_ ecb_const uint64_t ecb_bswap64 (uint64_t x);
940	ecb_function_ uint64_t	1077	ecb_function_ ecb_const uint64_t
941	ecb_bswap64 (uint64_t x)	1078	ecb_bswap64 (uint64_t x)
942	{	1079	{
943	return (((uint64_t)ecb_bswap32 (x)) << 32) \| ecb_bswap32 (x >> 32);	1080	return (((uint64_t)ecb_bswap32 (x)) << 32) \| ecb_bswap32 (x >> 32);
944	}	1081	}
945	#endif	1082	#endif
946		1083
947	#if ECB_GCC_VERSION(4,5)	1084	#if ECB_GCC_VERSION(4,5) \|\| ECB_CLANG_BUILTIN(__builtin_unreachable)
948	#define ecb_unreachable() __builtin_unreachable ()	1085	#define ecb_unreachable() __builtin_unreachable ()
949	#else	1086	#else
950	/* this seems to work fine, but gcc always emits a warning for it :/ */	1087	/* this seems to work fine, but gcc always emits a warning for it :/ */
951	ecb_inline void ecb_unreachable (void) ecb_noreturn;	1088	ecb_inline ecb_noreturn void ecb_unreachable (void);
952	ecb_inline void ecb_unreachable (void) { }	1089	ecb_inline ecb_noreturn void ecb_unreachable (void) { }
953	#endif	1090	#endif
954		1091
955	/* try to tell the compiler that some condition is definitely true */	1092	/* try to tell the compiler that some condition is definitely true */
956	#define ecb_assume(cond) if (!(cond)) ecb_unreachable (); else 0	1093	#define ecb_assume(cond) if (!(cond)) ecb_unreachable (); else 0
957		1094
958	ecb_inline unsigned char ecb_byteorder_helper (void) ecb_const;	1095	ecb_inline ecb_const unsigned char ecb_byteorder_helper (void);
959	ecb_inline unsigned char	1096	ecb_inline ecb_const unsigned char
960	ecb_byteorder_helper (void)	1097	ecb_byteorder_helper (void)
961	{	1098	{
962	/* the union code still generates code under pressure in gcc, */	1099	/* the union code still generates code under pressure in gcc, */
963	/* but less than using pointers, and always seems to */	1100	/* but less than using pointers, and always seems to */
964	/* successfully return a constant. */	1101	/* successfully return a constant. */
965	/* the reason why we have this horrible preprocessor mess */	1102	/* the reason why we have this horrible preprocessor mess */
966	/* is to avoid it in all cases, at least on common architectures */	1103	/* is to avoid it in all cases, at least on common architectures */
967	/* or when using a recent enough gcc version (>= 4.6) */	1104	/* or when using a recent enough gcc version (>= 4.6) */
968	#if __i386 \|\| __i386__ \|\| _M_X86 \|\| __amd64 \|\| __amd64__ \|\| _M_X64	1105	#if ((__i386 \|\| __i386__) && !__VOS__) \|\| _M_IX86 \|\| ECB_GCC_AMD64 \|\| ECB_MSVC_AMD64
969	return 0x44;	1106	return 0x44;
970	#elif __BYTE_ORDER__ && __BYTE_ORDER__ == __ORDER_LITTLE_ENDIAN__	1107	#elif __BYTE_ORDER__ && __BYTE_ORDER__ == __ORDER_LITTLE_ENDIAN__
971	return 0x44;	1108	return 0x44;
972	#elif __BYTE_ORDER__ && __BYTE_ORDER__ == __ORDER_BIG_ENDIAN__	1109	#elif __BYTE_ORDER__ && __BYTE_ORDER__ == __ORDER_BIG_ENDIAN__
973	return 0x11;	1110	return 0x11;
…		…
979	} u = { 0x11223344 };	1116	} u = { 0x11223344 };
980	return u.c;	1117	return u.c;
981	#endif	1118	#endif
982	}	1119	}
983		1120
984	ecb_inline ecb_bool ecb_big_endian (void) ecb_const;	1121	ecb_inline ecb_const ecb_bool ecb_big_endian (void);
985	ecb_inline ecb_bool ecb_big_endian (void) { return ecb_byteorder_helper () == 0x11; }	1122	ecb_inline ecb_const ecb_bool ecb_big_endian (void) { return ecb_byteorder_helper () == 0x11; }
986	ecb_inline ecb_bool ecb_little_endian (void) ecb_const;	1123	ecb_inline ecb_const ecb_bool ecb_little_endian (void);
987	ecb_inline ecb_bool ecb_little_endian (void) { return ecb_byteorder_helper () == 0x44; }	1124	ecb_inline ecb_const ecb_bool ecb_little_endian (void) { return ecb_byteorder_helper () == 0x44; }
988		1125
989	#if ECB_GCC_VERSION(3,0) \|\| ECB_C99	1126	#if ECB_GCC_VERSION(3,0) \|\| ECB_C99
990	#define ecb_mod(m,n) ((m) % (n) + ((m) % (n) < 0 ? (n) : 0))	1127	#define ecb_mod(m,n) ((m) % (n) + ((m) % (n) < 0 ? (n) : 0))
991	#else	1128	#else
992	#define ecb_mod(m,n) ((m) < 0 ? ((n) - 1 - ((-1 - (m)) % (n))) : ((m) % (n)))	1129	#define ecb_mod(m,n) ((m) < 0 ? ((n) - 1 - ((-1 - (m)) % (n))) : ((m) % (n)))
993	#endif	1130	#endif
994		1131
995	#if __cplusplus	1132	#if ECB_CPP
996	template<typename T>	1133	template<typename T>
997	static inline T ecb_div_rd (T val, T div)	1134	static inline T ecb_div_rd (T val, T div)
998	{	1135	{
999	return val < 0 ? - ((-val + div - 1) / div) : (val ) / div;	1136	return val < 0 ? - ((-val + div - 1) / div) : (val ) / div;
1000	}	1137	}
…		…
1024		1161
1025	/* basically, everything uses "ieee pure-endian" floating point numbers */	1162	/* basically, everything uses "ieee pure-endian" floating point numbers */
1026	/* the only noteworthy exception is ancient armle, which uses order 43218765 */	1163	/* the only noteworthy exception is ancient armle, which uses order 43218765 */
1027	#if 0 \	1164	#if 0 \
1028	\|\| __i386 \|\| __i386__ \	1165	\|\| __i386 \|\| __i386__ \
1029	\|\| __amd64 \|\| __amd64__ \|\| __x86_64 \|\| __x86_64__ \	1166	\|\| ECB_GCC_AMD64 \
1030	\|\| __powerpc__ \|\| __ppc__ \|\| __powerpc64__ \|\| __ppc64__ \	1167	\|\| __powerpc__ \|\| __ppc__ \|\| __powerpc64__ \|\| __ppc64__ \
1031	\|\| defined __arm__ && defined __ARM_EABI__ \
1032	\|\| defined __s390__ \|\| defined __s390x__ \	1168	\|\| defined __s390__ \|\| defined __s390x__ \
1033	\|\| defined __mips__ \	1169	\|\| defined __mips__ \
1034	\|\| defined __alpha__ \	1170	\|\| defined __alpha__ \
1035	\|\| defined __hppa__ \	1171	\|\| defined __hppa__ \
1036	\|\| defined __ia64__ \	1172	\|\| defined __ia64__ \
		1173	\|\| defined __m68k__ \
		1174	\|\| defined __m88k__ \
		1175	\|\| defined __sh__ \
1037	\|\| defined _M_IX86 \|\| defined _M_AMD64 \|\| defined _M_IA64	1176	\|\| defined _M_IX86 \|\| defined ECB_MSVC_AMD64 \|\| defined _M_IA64 \
		1177	\|\| (defined __arm__ && (defined __ARM_EABI__ \|\| defined __EABI__ \|\| defined __VFP_FP__ \|\| defined _WIN32_WCE \|\| defined __ANDROID__)) \
		1178	\|\| defined __aarch64__
1038	#define ECB_STDFP 1	1179	#define ECB_STDFP 1
1039	#include <string.h> /* for memcpy */	1180	#include <string.h> /* for memcpy */
1040	#else	1181	#else
1041	#define ECB_STDFP 0	1182	#define ECB_STDFP 0
1042	#include <math.h> /* for frexp, ldexp */
1043	#endif	1183	#endif
1044		1184
1045	#ifndef ECB_NO_LIBM	1185	#ifndef ECB_NO_LIBM
1046		1186
		1187	#include <math.h> /* for frexp, ldexp, INFINITY, NAN */
		1188
		1189	/* only the oldest of old doesn't have this one. solaris. */
		1190	#ifdef INFINITY
		1191	#define ECB_INFINITY INFINITY
		1192	#else
		1193	#define ECB_INFINITY HUGE_VAL
		1194	#endif
		1195
		1196	#ifdef NAN
		1197	#define ECB_NAN NAN
		1198	#else
		1199	#define ECB_NAN ECB_INFINITY
		1200	#endif
		1201
		1202	#if ECB_C99 \|\| _XOPEN_VERSION >= 600 \|\| _POSIX_VERSION >= 200112L
		1203	#define ecb_ldexpf(x,e) ldexpf ((x), (e))
		1204	#define ecb_frexpf(x,e) frexpf ((x), (e))
		1205	#else
		1206	#define ecb_ldexpf(x,e) (float) ldexp ((double) (x), (e))
		1207	#define ecb_frexpf(x,e) (float) frexp ((double) (x), (e))
		1208	#endif
		1209
		1210	/* converts an ieee half/binary16 to a float */
		1211	ecb_function_ ecb_const float ecb_binary16_to_float (uint16_t x);
		1212	ecb_function_ ecb_const float
		1213	ecb_binary16_to_float (uint16_t x)
		1214	{
		1215	int e = (x >> 10) & 0x1f;
		1216	int m = x & 0x3ff;
		1217	float r;
		1218
		1219	if (!e ) r = ecb_ldexpf (m , -24);
		1220	else if (e != 31) r = ecb_ldexpf (m + 0x400, e - 25);
		1221	else if (m ) r = ECB_NAN;
		1222	else r = ECB_INFINITY;
		1223
		1224	return x & 0x8000 ? -r : r;
		1225	}
		1226
1047	/* convert a float to ieee single/binary32 */	1227	/* convert a float to ieee single/binary32 */
1048	ecb_function_ uint32_t ecb_float_to_binary32 (float x) ecb_const;	1228	ecb_function_ ecb_const uint32_t ecb_float_to_binary32 (float x);
1049	ecb_function_ uint32_t	1229	ecb_function_ ecb_const uint32_t
1050	ecb_float_to_binary32 (float x)	1230	ecb_float_to_binary32 (float x)
1051	{	1231	{
1052	uint32_t r;	1232	uint32_t r;
1053		1233
1054	#if ECB_STDFP	1234	#if ECB_STDFP
…		…
1061	if (x == 0e0f ) return 0x00000000U;	1241	if (x == 0e0f ) return 0x00000000U;
1062	if (x > +3.40282346638528860e+38f) return 0x7f800000U;	1242	if (x > +3.40282346638528860e+38f) return 0x7f800000U;
1063	if (x < -3.40282346638528860e+38f) return 0xff800000U;	1243	if (x < -3.40282346638528860e+38f) return 0xff800000U;
1064	if (x != x ) return 0x7fbfffffU;	1244	if (x != x ) return 0x7fbfffffU;
1065		1245
1066	m = frexpf (x, &e) * 0x1000000U;	1246	m = ecb_frexpf (x, &e) * 0x1000000U;
1067		1247
1068	r = m & 0x80000000U;	1248	r = m & 0x80000000U;
1069		1249
1070	if (r)	1250	if (r)
1071	m = -m;	1251	m = -m;
…		…
1083		1263
1084	return r;	1264	return r;
1085	}	1265	}
1086		1266
1087	/* converts an ieee single/binary32 to a float */	1267	/* converts an ieee single/binary32 to a float */
1088	ecb_function_ float ecb_binary32_to_float (uint32_t x) ecb_const;	1268	ecb_function_ ecb_const float ecb_binary32_to_float (uint32_t x);
1089	ecb_function_ float	1269	ecb_function_ ecb_const float
1090	ecb_binary32_to_float (uint32_t x)	1270	ecb_binary32_to_float (uint32_t x)
1091	{	1271	{
1092	float r;	1272	float r;
1093		1273
1094	#if ECB_STDFP	1274	#if ECB_STDFP
…		…
1104	x \|= 0x800000U;	1284	x \|= 0x800000U;
1105	else	1285	else
1106	e = 1;	1286	e = 1;
1107		1287
1108	/* we distrust ldexpf a bit and do the 2*-24 scaling by an extra multiply /	1288	/* we distrust ldexpf a bit and do the 2*-24 scaling by an extra multiply /
1109	r = ldexpf (x * (0.5f / 0x800000U), e - 126);	1289	r = ecb_ldexpf (x * (0.5f / 0x800000U), e - 126);
1110		1290
1111	r = neg ? -r : r;	1291	r = neg ? -r : r;
1112	#endif	1292	#endif
1113		1293
1114	return r;	1294	return r;
1115	}	1295	}
1116		1296
1117	/* convert a double to ieee double/binary64 */	1297	/* convert a double to ieee double/binary64 */
1118	ecb_function_ uint64_t ecb_double_to_binary64 (double x) ecb_const;	1298	ecb_function_ ecb_const uint64_t ecb_double_to_binary64 (double x);
1119	ecb_function_ uint64_t	1299	ecb_function_ ecb_const uint64_t
1120	ecb_double_to_binary64 (double x)	1300	ecb_double_to_binary64 (double x)
1121	{	1301	{
1122	uint64_t r;	1302	uint64_t r;
1123		1303
1124	#if ECB_STDFP	1304	#if ECB_STDFP
…		…
1153		1333
1154	return r;	1334	return r;
1155	}	1335	}
1156		1336
1157	/* converts an ieee double/binary64 to a double */	1337	/* converts an ieee double/binary64 to a double */
1158	ecb_function_ double ecb_binary64_to_double (uint64_t x) ecb_const;	1338	ecb_function_ ecb_const double ecb_binary64_to_double (uint64_t x);
1159	ecb_function_ double	1339	ecb_function_ ecb_const double
1160	ecb_binary64_to_double (uint64_t x)	1340	ecb_binary64_to_double (uint64_t x)
1161	{	1341	{
1162	double r;	1342	double r;
1163		1343
1164	#if ECB_STDFP	1344	#if ECB_STDFP
…		…
2085	ev_syserr ("(libev) error creating signal/async pipe");	2265	ev_syserr ("(libev) error creating signal/async pipe");
2086		2266
2087	fd_intern (fds [0]);	2267	fd_intern (fds [0]);
2088	}	2268	}
2089		2269
2090	fd_intern (fds [1]);
2091
2092	evpipe [0] = fds [0];	2270	evpipe [0] = fds [0];
2093		2271
2094	if (evpipe [1] < 0)	2272	if (evpipe [1] < 0)
2095	evpipe [1] = fds [1]; /* first call, set write fd */	2273	evpipe [1] = fds [1]; /* first call, set write fd */
2096	else	2274	else
…		…
2101	/* so must not be executed on windows */	2279	/* so must not be executed on windows */
2102		2280
2103	dup2 (fds [1], evpipe [1]);	2281	dup2 (fds [1], evpipe [1]);
2104	close (fds [1]);	2282	close (fds [1]);
2105	}	2283	}
		2284
		2285	fd_intern (evpipe [1]);
2106		2286
2107	ev_io_set (&pipe_w, evpipe [0] < 0 ? evpipe [1] : evpipe [0], EV_READ);	2287	ev_io_set (&pipe_w, evpipe [0] < 0 ? evpipe [1] : evpipe [0], EV_READ);
2108	ev_io_start (EV_A_ &pipe_w);	2288	ev_io_start (EV_A_ &pipe_w);
2109	ev_unref (EV_A); /* watcher should not keep loop alive */	2289	ev_unref (EV_A); /* watcher should not keep loop alive */
2110	}	2290	}
…		…
2229		2409
2230	void	2410	void
2231	ev_feed_signal (int signum) EV_THROW	2411	ev_feed_signal (int signum) EV_THROW
2232	{	2412	{
2233	#if EV_MULTIPLICITY	2413	#if EV_MULTIPLICITY
		2414	EV_P;
2234	ECB_MEMORY_FENCE_ACQUIRE;	2415	ECB_MEMORY_FENCE_ACQUIRE;
2235	EV_P = signals [signum - 1].loop;	2416	EV_A = signals [signum - 1].loop;
2236		2417
2237	if (!EV_A)	2418	if (!EV_A)
2238	return;	2419	return;
2239	#endif	2420	#endif
2240		2421
…		…
2493	{	2674	{
2494	return userdata;	2675	return userdata;
2495	}	2676	}
2496		2677
2497	void	2678	void
2498	ev_set_invoke_pending_cb (EV_P_ void (*invoke_pending_cb)(EV_P)) EV_THROW	2679	ev_set_invoke_pending_cb (EV_P_ ev_loop_callback invoke_pending_cb) EV_THROW
2499	{	2680	{
2500	invoke_cb = invoke_pending_cb;	2681	invoke_cb = invoke_pending_cb;
2501	}	2682	}
2502		2683
2503	void	2684	void
…		…
3893	# define EV_INOTIFY_BUFSIZE (sizeof (struct inotify_event) * 2 + NAME_MAX)	4074	# define EV_INOTIFY_BUFSIZE (sizeof (struct inotify_event) * 2 + NAME_MAX)
3894		4075
3895	static void noinline	4076	static void noinline
3896	infy_add (EV_P_ ev_stat *w)	4077	infy_add (EV_P_ ev_stat *w)
3897	{	4078	{
3898	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);	4079	w->wd = inotify_add_watch (fs_fd, w->path,
		4080	IN_ATTRIB \| IN_DELETE_SELF \| IN_MOVE_SELF \| IN_MODIFY
		4081	\| IN_CREATE \| IN_DELETE \| IN_MOVED_FROM \| IN_MOVED_TO
		4082	\| IN_DONT_FOLLOW \| IN_MASK_ADD);
3899		4083
3900	if (w->wd >= 0)	4084	if (w->wd >= 0)
3901	{	4085	{
3902	struct statfs sfs;	4086	struct statfs sfs;
3903		4087
…		…
3907		4091
3908	if (!fs_2625)	4092	if (!fs_2625)
3909	w->timer.repeat = w->interval ? w->interval : DEF_STAT_INTERVAL;	4093	w->timer.repeat = w->interval ? w->interval : DEF_STAT_INTERVAL;
3910	else if (!statfs (w->path, &sfs)	4094	else if (!statfs (w->path, &sfs)
3911	&& (sfs.f_type == 0x1373 /* devfs */	4095	&& (sfs.f_type == 0x1373 /* devfs */
		4096	\|\| sfs.f_type == 0x4006 /* fat */
		4097	\|\| sfs.f_type == 0x4d44 /* msdos */
3912	\|\| sfs.f_type == 0xEF53 /* ext2/3 */	4098	\|\| sfs.f_type == 0xEF53 /* ext2/3 */
		4099	\|\| sfs.f_type == 0x72b6 /* jffs2 */
		4100	\|\| sfs.f_type == 0x858458f6 /* ramfs */
		4101	\|\| sfs.f_type == 0x5346544e /* ntfs */
3913	\|\| sfs.f_type == 0x3153464a /* jfs */	4102	\|\| sfs.f_type == 0x3153464a /* jfs */
		4103	\|\| sfs.f_type == 0x9123683e /* btrfs */
3914	\|\| sfs.f_type == 0x52654973 /* reiser3 */	4104	\|\| sfs.f_type == 0x52654973 /* reiser3 */
3915	\|\| sfs.f_type == 0x01021994 /* tempfs */	4105	\|\| sfs.f_type == 0x01021994 /* tmpfs */
3916	\|\| sfs.f_type == 0x58465342 /* xfs */))	4106	\|\| sfs.f_type == 0x58465342 /* xfs */))
3917	w->timer.repeat = 0.; /* filesystem is local, kernel new enough */	4107	w->timer.repeat = 0.; /* filesystem is local, kernel new enough */
3918	else	4108	else
3919	w->timer.repeat = w->interval ? w->interval : NFS_STAT_INTERVAL; /* remote, use reduced frequency */	4109	w->timer.repeat = w->interval ? w->interval : NFS_STAT_INTERVAL; /* remote, use reduced frequency */
3920	}	4110	}

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Comparing libev/ev.c (file contents): Revision 1.450 by root, Mon Oct 8 15:43:35 2012 UTC vs. Revision 1.477 by root, Sun Aug 9 00:13:28 2015 UTC

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Comparing libev/ev.c (file contents):
Revision 1.450 by root, Mon Oct 8 15:43:35 2012 UTC vs.
Revision 1.477 by root, Sun Aug 9 00:13:28 2015 UTC