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

Comparing libev/ev.c (file contents):
Revision 1.448 by root, Tue Jul 24 16:28:08 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 0x00010001	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;
…		…
530	#else	557	#else
531	#define ECB_PTRSIZE 4	558	#define ECB_PTRSIZE 4
532	typedef uint32_t uintptr_t;	559	typedef uint32_t uintptr_t;
533	typedef int32_t intptr_t;	560	typedef int32_t intptr_t;
534	#endif	561	#endif
535	typedef intptr_t ptrdiff_t;
536	#else	562	#else
537	#include <inttypes.h>	563	#include <inttypes.h>
538	#if UINTMAX_MAX > 0xffffffffU	564	#if UINTMAX_MAX > 0xffffffffU
539	#define ECB_PTRSIZE 8	565	#define ECB_PTRSIZE 8
540	#else	566	#else
541	#define ECB_PTRSIZE 4	567	#define ECB_PTRSIZE 4
542	#endif	568	#endif
543	#endif	569	#endif
544		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
545	/* many compilers define _GNUC_ to some versions but then only implement	583	/* many compilers define _GNUC_ to some versions but then only implement
546	* what their idiot authors think are the "more important" extensions,	584	* what their idiot authors think are the "more important" extensions,
547	* causing enormous grief in return for some better fake benchmark numbers.	585	* causing enormous grief in return for some better fake benchmark numbers.
548	* or so.	586	* or so.
549	* 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
550	* 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.
551	*/	589	*/
552	#ifndef ECB_GCC_VERSION
553	#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__
554	#define ECB_GCC_VERSION(major,minor) 0	591	#define ECB_GCC_VERSION(major,minor) 0
555	#else	592	#else
556	#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)))
557	#endif	594	#endif
558	#endif
559		595
560	#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)))
561	#define ECB_C99 (__STDC_VERSION__ >= 199901L)	597
562	#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
563	#define ECB_CPP (__cplusplus+0)	610	#define ECB_CPP (__cplusplus+0)
564	#define ECB_CPP11 (__cplusplus >= 201103L)	611	#define ECB_CPP11 (__cplusplus >= 201103L)
565		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
		632	#endif
		633
566	/*****************************************************************************/	634	/*****************************************************************************/
567		635
568	/* ECB_NO_THREADS - ecb is not used by multiple threads, ever */	636	/* ECB_NO_THREADS - ecb is not used by multiple threads, ever */
569	/* 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 */
570		638
…		…
572	#define ECB_NO_SMP 1	640	#define ECB_NO_SMP 1
573	#endif	641	#endif
574		642
575	#if ECB_NO_SMP	643	#if ECB_NO_SMP
576	#define ECB_MEMORY_FENCE do { } while (0)	644	#define ECB_MEMORY_FENCE do { } while (0)
		645	#endif
		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>
577	#endif	650	#endif
578		651
579	#ifndef ECB_MEMORY_FENCE	652	#ifndef ECB_MEMORY_FENCE
580	#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
581	#if __i386 \|\| __i386__	654	#if __i386 \|\| __i386__
582	#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")
583	#define ECB_MEMORY_FENCE_ACQUIRE __asm__ __volatile__ ("" : : : "memory")	656	#define ECB_MEMORY_FENCE_ACQUIRE __asm__ __volatile__ ("" : : : "memory")
584	#define ECB_MEMORY_FENCE_RELEASE __asm__ __volatile__ ("")	657	#define ECB_MEMORY_FENCE_RELEASE __asm__ __volatile__ ("")
585	#elif __amd64 \|\| __amd64__ \|\| __x86_64 \|\| __x86_64__	658	#elif ECB_GCC_AMD64
586	#define ECB_MEMORY_FENCE __asm__ __volatile__ ("mfence" : : : "memory")	659	#define ECB_MEMORY_FENCE __asm__ __volatile__ ("mfence" : : : "memory")
587	#define ECB_MEMORY_FENCE_ACQUIRE __asm__ __volatile__ ("" : : : "memory")	660	#define ECB_MEMORY_FENCE_ACQUIRE __asm__ __volatile__ ("" : : : "memory")
588	#define ECB_MEMORY_FENCE_RELEASE __asm__ __volatile__ ("")	661	#define ECB_MEMORY_FENCE_RELEASE __asm__ __volatile__ ("")
589	#elif __powerpc__ \|\| __ppc__ \|\| __powerpc64__ \|\| __ppc64__	662	#elif __powerpc__ \|\| __ppc__ \|\| __powerpc64__ \|\| __ppc64__
590	#define ECB_MEMORY_FENCE __asm__ __volatile__ ("sync" : : : "memory")	663	#define ECB_MEMORY_FENCE __asm__ __volatile__ ("sync" : : : "memory")
…		…
592	\|\| defined __ARM_ARCH_6K__ \|\| defined __ARM_ARCH_6ZK__	665	\|\| defined __ARM_ARCH_6K__ \|\| defined __ARM_ARCH_6ZK__
593	#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")
594	#elif defined __ARM_ARCH_7__ \|\| defined __ARM_ARCH_7A__ \	667	#elif defined __ARM_ARCH_7__ \|\| defined __ARM_ARCH_7A__ \
595	\|\| defined __ARM_ARCH_7M__ \|\| defined __ARM_ARCH_7R__	668	\|\| defined __ARM_ARCH_7M__ \|\| defined __ARM_ARCH_7R__
596	#define ECB_MEMORY_FENCE __asm__ __volatile__ ("dmb" : : : "memory")	669	#define ECB_MEMORY_FENCE __asm__ __volatile__ ("dmb" : : : "memory")
597	#elif __sparc \|\| __sparc__	670	#elif __aarch64__
		671	#define ECB_MEMORY_FENCE __asm__ __volatile__ ("dmb ish" : : : "memory")
		672	#elif (__sparc \|\| __sparc__) && !(__sparc_v8__ \|\| defined __sparcv8)
598	#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")
599	#define ECB_MEMORY_FENCE_ACQUIRE __asm__ __volatile__ ("membar #LoadStore \| #LoadLoad" : : : "memory")	674	#define ECB_MEMORY_FENCE_ACQUIRE __asm__ __volatile__ ("membar #LoadStore \| #LoadLoad" : : : "memory")
600	#define ECB_MEMORY_FENCE_RELEASE __asm__ __volatile__ ("membar #LoadStore \| #StoreStore")	675	#define ECB_MEMORY_FENCE_RELEASE __asm__ __volatile__ ("membar #LoadStore \| #StoreStore")
601	#elif defined __s390__ \|\| defined __s390x__	676	#elif defined __s390__ \|\| defined __s390x__
602	#define ECB_MEMORY_FENCE __asm__ __volatile__ ("bcr 15,0" : : : "memory")	677	#define ECB_MEMORY_FENCE __asm__ __volatile__ ("bcr 15,0" : : : "memory")
603	#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. */
604	#define ECB_MEMORY_FENCE __asm__ __volatile__ ("sync" : : : "memory")	681	#define ECB_MEMORY_FENCE __asm__ __volatile__ (".set mips2; sync; .set mips0" : : : "memory")
605	#elif defined __alpha__	682	#elif defined __alpha__
606	#define ECB_MEMORY_FENCE __asm__ __volatile__ ("mb" : : : "memory")	683	#define ECB_MEMORY_FENCE __asm__ __volatile__ ("mb" : : : "memory")
607	#elif defined __hppa__	684	#elif defined __hppa__
608	#define ECB_MEMORY_FENCE __asm__ __volatile__ ("" : : : "memory")	685	#define ECB_MEMORY_FENCE __asm__ __volatile__ ("" : : : "memory")
609	#define ECB_MEMORY_FENCE_RELEASE __asm__ __volatile__ ("")	686	#define ECB_MEMORY_FENCE_RELEASE __asm__ __volatile__ ("")
610	#elif defined __ia64__	687	#elif defined __ia64__
611	#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")
612	#endif	695	#endif
613	#endif	696	#endif
614	#endif	697	#endif
615		698
616	#ifndef ECB_MEMORY_FENCE	699	#ifndef ECB_MEMORY_FENCE
617	#if ECB_GCC_VERSION(4,7)	700	#if ECB_GCC_VERSION(4,7)
618	/* see comment below (stdatomic.h) about the C11 memory model. */	701	/* see comment below (stdatomic.h) about the C11 memory model. */
619	#define ECB_MEMORY_FENCE __atomic_thread_fence (__ATOMIC_SEQ_CST)	702	#define ECB_MEMORY_FENCE __atomic_thread_fence (__ATOMIC_SEQ_CST)
620	#elif defined __clang && __has_feature (cxx_atomic)	703	#define ECB_MEMORY_FENCE_ACQUIRE __atomic_thread_fence (__ATOMIC_ACQUIRE)
		704	#define ECB_MEMORY_FENCE_RELEASE __atomic_thread_fence (__ATOMIC_RELEASE)
		705
		706	#elif ECB_CLANG_EXTENSION(c_atomic)
621	/* see comment below (stdatomic.h) about the C11 memory model. */	707	/* see comment below (stdatomic.h) about the C11 memory model. */
622	#define ECB_MEMORY_FENCE __c11_atomic_thread_fence (__ATOMIC_SEQ_CST)	708	#define ECB_MEMORY_FENCE __c11_atomic_thread_fence (__ATOMIC_SEQ_CST)
		709	#define ECB_MEMORY_FENCE_ACQUIRE __c11_atomic_thread_fence (__ATOMIC_ACQUIRE)
		710	#define ECB_MEMORY_FENCE_RELEASE __c11_atomic_thread_fence (__ATOMIC_RELEASE)
		711
623	#elif ECB_GCC_VERSION(4,4) \|\| defined __INTEL_COMPILER \|\| defined __clang__	712	#elif ECB_GCC_VERSION(4,4) \|\| defined __INTEL_COMPILER \|\| defined __clang__
624	#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()
625	#elif _MSC_VER >= 1400 /* VC++ 2005 */	720	#elif _MSC_VER >= 1400 /* VC++ 2005 */
626	#pragma intrinsic(_ReadBarrier,_WriteBarrier,_ReadWriteBarrier)	721	#pragma intrinsic(_ReadBarrier,_WriteBarrier,_ReadWriteBarrier)
627	#define ECB_MEMORY_FENCE _ReadWriteBarrier ()	722	#define ECB_MEMORY_FENCE _ReadWriteBarrier ()
628	#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 */
629	#define ECB_MEMORY_FENCE_RELEASE _WriteBarrier ()	724	#define ECB_MEMORY_FENCE_RELEASE _WriteBarrier ()
…		…
649	/* 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. */
650	/* 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 */
651	/* for most usages, or gcc and clang have a bug */	746	/* for most usages, or gcc and clang have a bug */
652	/* I currently lean towards the latter, and inefficiently implement */	747	/* I currently lean towards the latter, and inefficiently implement */
653	/* 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 */
654	#define ECB_MEMORY_FENCE atomic_thread_fence (memory_order_seq_cst)	751	#define ECB_MEMORY_FENCE atomic_thread_fence (memory_order_seq_cst)
655	#endif	752	#endif
656	#endif	753	#endif
657		754
658	#ifndef ECB_MEMORY_FENCE	755	#ifndef ECB_MEMORY_FENCE
…		…
681	#define ECB_MEMORY_FENCE_RELEASE ECB_MEMORY_FENCE	778	#define ECB_MEMORY_FENCE_RELEASE ECB_MEMORY_FENCE
682	#endif	779	#endif
683		780
684	/*****************************************************************************/	781	/*****************************************************************************/
685		782
686	#if __cplusplus	783	#if ECB_CPP
687	#define ecb_inline static inline	784	#define ecb_inline static inline
688	#elif ECB_GCC_VERSION(2,5)	785	#elif ECB_GCC_VERSION(2,5)
689	#define ecb_inline static __inline__	786	#define ecb_inline static __inline__
690	#elif ECB_C99	787	#elif ECB_C99
691	#define ecb_inline static inline	788	#define ecb_inline static inline
…		…
705		802
706	#define ECB_CONCAT_(a, b) a ## b	803	#define ECB_CONCAT_(a, b) a ## b
707	#define ECB_CONCAT(a, b) ECB_CONCAT_(a, b)	804	#define ECB_CONCAT(a, b) ECB_CONCAT_(a, b)
708	#define ECB_STRINGIFY_(a) # a	805	#define ECB_STRINGIFY_(a) # a
709	#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))
710		808
711	#define ecb_function_ ecb_inline	809	#define ecb_function_ ecb_inline
712		810
713	#if ECB_GCC_VERSION(3,1)	811	#if ECB_GCC_VERSION(3,1) \|\| ECB_CLANG_VERSION(2,8)
714	#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)
715	#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)
716	#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)
717	#define ecb_prefetch(addr,rw,locality) __builtin_prefetch (addr, rw, locality)	834	#define ecb_prefetch(addr,rw,locality) __builtin_prefetch (addr, rw, locality)
718	#else	835	#else
719	#define ecb_attribute(attrlist)
720	#define ecb_is_constant(expr) 0
721	#define ecb_expect(expr,value) (expr)
722	#define ecb_prefetch(addr,rw,locality)	836	#define ecb_prefetch(addr,rw,locality)
723	#endif	837	#endif
724		838
725	/* no emulation for ecb_decltype */	839	/* no emulation for ecb_decltype */
726	#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; };
727	#define ecb_decltype(x) __decltype(x)	843	#define ecb_decltype(x) ecb_decltype_t<decltype (x)>::type
728	#elif ECB_GCC_VERSION(3,0)	844	#elif ECB_GCC_VERSION(3,0) \|\| ECB_CLANG_VERSION(2,8)
729	#define ecb_decltype(x) __typeof(x)	845	#define ecb_decltype(x) __typeof__ (x)
730	#endif	846	#endif
731		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
732	#define ecb_noinline ecb_attribute ((__noinline__))	865	#define ecb_noinline ecb_attribute ((__noinline__))
		866	#endif
		867
733	#define ecb_unused ecb_attribute ((__unused__))	868	#define ecb_unused ecb_attribute ((__unused__))
734	#define ecb_const ecb_attribute ((__const__))	869	#define ecb_const ecb_attribute ((__const__))
735	#define ecb_pure ecb_attribute ((__pure__))	870	#define ecb_pure ecb_attribute ((__pure__))
736		871
737	#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 */
738	#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)
739	#else	880	#else
740	#define ecb_noreturn ecb_attribute ((__noreturn__))	881	#define ecb_noreturn ecb_attribute ((__noreturn__))
741	#endif	882	#endif
742		883
743	#if ECB_GCC_VERSION(4,3)	884	#if ECB_GCC_VERSION(4,3)
…		…
758	/* for compatibility to the rest of the world */	899	/* for compatibility to the rest of the world */
759	#define ecb_likely(expr) ecb_expect_true (expr)	900	#define ecb_likely(expr) ecb_expect_true (expr)
760	#define ecb_unlikely(expr) ecb_expect_false (expr)	901	#define ecb_unlikely(expr) ecb_expect_false (expr)
761		902
762	/* count trailing zero bits and count # of one bits */	903	/* count trailing zero bits and count # of one bits */
763	#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))
764	/* 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 */
765	#define ecb_ld32(x) (__builtin_clz (x) ^ 31)	909	#define ecb_ld32(x) (__builtin_clz (x) ^ 31)
766	#define ecb_ld64(x) (__builtin_clzll (x) ^ 63)	910	#define ecb_ld64(x) (__builtin_clzll (x) ^ 63)
767	#define ecb_ctz32(x) __builtin_ctz (x)	911	#define ecb_ctz32(x) __builtin_ctz (x)
768	#define ecb_ctz64(x) __builtin_ctzll (x)	912	#define ecb_ctz64(x) __builtin_ctzll (x)
769	#define ecb_popcount32(x) __builtin_popcount (x)	913	#define ecb_popcount32(x) __builtin_popcount (x)
770	/* no popcountll */	914	/* no popcountll */
771	#else	915	#else
772	ecb_function_ int ecb_ctz32 (uint32_t x) ecb_const;	916	ecb_function_ ecb_const int ecb_ctz32 (uint32_t x);
773	ecb_function_ int	917	ecb_function_ ecb_const int
774	ecb_ctz32 (uint32_t x)	918	ecb_ctz32 (uint32_t x)
775	{	919	{
776	int r = 0;	920	int r = 0;
777		921
778	x &= ~x + 1; /* this isolates the lowest bit */	922	x &= ~x + 1; /* this isolates the lowest bit */
…		…
792	#endif	936	#endif
793		937
794	return r;	938	return r;
795	}	939	}
796		940
797	ecb_function_ int ecb_ctz64 (uint64_t x) ecb_const;	941	ecb_function_ ecb_const int ecb_ctz64 (uint64_t x);
798	ecb_function_ int	942	ecb_function_ ecb_const int
799	ecb_ctz64 (uint64_t x)	943	ecb_ctz64 (uint64_t x)
800	{	944	{
801	int shift = x & 0xffffffffU ? 0 : 32;	945	int shift = x & 0xffffffffU ? 0 : 32;
802	return ecb_ctz32 (x >> shift) + shift;	946	return ecb_ctz32 (x >> shift) + shift;
803	}	947	}
804		948
805	ecb_function_ int ecb_popcount32 (uint32_t x) ecb_const;	949	ecb_function_ ecb_const int ecb_popcount32 (uint32_t x);
806	ecb_function_ int	950	ecb_function_ ecb_const int
807	ecb_popcount32 (uint32_t x)	951	ecb_popcount32 (uint32_t x)
808	{	952	{
809	x -= (x >> 1) & 0x55555555;	953	x -= (x >> 1) & 0x55555555;
810	x = ((x >> 2) & 0x33333333) + (x & 0x33333333);	954	x = ((x >> 2) & 0x33333333) + (x & 0x33333333);
811	x = ((x >> 4) + x) & 0x0f0f0f0f;	955	x = ((x >> 4) + x) & 0x0f0f0f0f;
812	x *= 0x01010101;	956	x *= 0x01010101;
813		957
814	return x >> 24;	958	return x >> 24;
815	}	959	}
816		960
817	ecb_function_ int ecb_ld32 (uint32_t x) ecb_const;	961	ecb_function_ ecb_const int ecb_ld32 (uint32_t x);
818	ecb_function_ int ecb_ld32 (uint32_t x)	962	ecb_function_ ecb_const int ecb_ld32 (uint32_t x)
819	{	963	{
820	int r = 0;	964	int r = 0;
821		965
822	if (x >> 16) { x >>= 16; r += 16; }	966	if (x >> 16) { x >>= 16; r += 16; }
823	if (x >> 8) { x >>= 8; r += 8; }	967	if (x >> 8) { x >>= 8; r += 8; }
…		…
826	if (x >> 1) { r += 1; }	970	if (x >> 1) { r += 1; }
827		971
828	return r;	972	return r;
829	}	973	}
830		974
831	ecb_function_ int ecb_ld64 (uint64_t x) ecb_const;	975	ecb_function_ ecb_const int ecb_ld64 (uint64_t x);
832	ecb_function_ int ecb_ld64 (uint64_t x)	976	ecb_function_ ecb_const int ecb_ld64 (uint64_t x)
833	{	977	{
834	int r = 0;	978	int r = 0;
835		979
836	if (x >> 32) { x >>= 32; r += 32; }	980	if (x >> 32) { x >>= 32; r += 32; }
837		981
838	return r + ecb_ld32 (x);	982	return r + ecb_ld32 (x);
839	}	983	}
840	#endif	984	#endif
841		985
842	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);
843	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)); }
844	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);
845	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)); }
846		990
847	ecb_function_ uint8_t ecb_bitrev8 (uint8_t x) ecb_const;	991	ecb_function_ ecb_const uint8_t ecb_bitrev8 (uint8_t x);
848	ecb_function_ uint8_t ecb_bitrev8 (uint8_t x)	992	ecb_function_ ecb_const uint8_t ecb_bitrev8 (uint8_t x)
849	{	993	{
850	return ( (x * 0x0802U & 0x22110U)	994	return ( (x * 0x0802U & 0x22110U)
851	\| (x * 0x8020U & 0x88440U)) * 0x10101U >> 16;	995	\| (x * 0x8020U & 0x88440U)) * 0x10101U >> 16;
852	}	996	}
853		997
854	ecb_function_ uint16_t ecb_bitrev16 (uint16_t x) ecb_const;	998	ecb_function_ ecb_const uint16_t ecb_bitrev16 (uint16_t x);
855	ecb_function_ uint16_t ecb_bitrev16 (uint16_t x)	999	ecb_function_ ecb_const uint16_t ecb_bitrev16 (uint16_t x)
856	{	1000	{
857	x = ((x >> 1) & 0x5555) \| ((x & 0x5555) << 1);	1001	x = ((x >> 1) & 0x5555) \| ((x & 0x5555) << 1);
858	x = ((x >> 2) & 0x3333) \| ((x & 0x3333) << 2);	1002	x = ((x >> 2) & 0x3333) \| ((x & 0x3333) << 2);
859	x = ((x >> 4) & 0x0f0f) \| ((x & 0x0f0f) << 4);	1003	x = ((x >> 4) & 0x0f0f) \| ((x & 0x0f0f) << 4);
860	x = ( x >> 8 ) \| ( x << 8);	1004	x = ( x >> 8 ) \| ( x << 8);
861		1005
862	return x;	1006	return x;
863	}	1007	}
864		1008
865	ecb_function_ uint32_t ecb_bitrev32 (uint32_t x) ecb_const;	1009	ecb_function_ ecb_const uint32_t ecb_bitrev32 (uint32_t x);
866	ecb_function_ uint32_t ecb_bitrev32 (uint32_t x)	1010	ecb_function_ ecb_const uint32_t ecb_bitrev32 (uint32_t x)
867	{	1011	{
868	x = ((x >> 1) & 0x55555555) \| ((x & 0x55555555) << 1);	1012	x = ((x >> 1) & 0x55555555) \| ((x & 0x55555555) << 1);
869	x = ((x >> 2) & 0x33333333) \| ((x & 0x33333333) << 2);	1013	x = ((x >> 2) & 0x33333333) \| ((x & 0x33333333) << 2);
870	x = ((x >> 4) & 0x0f0f0f0f) \| ((x & 0x0f0f0f0f) << 4);	1014	x = ((x >> 4) & 0x0f0f0f0f) \| ((x & 0x0f0f0f0f) << 4);
871	x = ((x >> 8) & 0x00ff00ff) \| ((x & 0x00ff00ff) << 8);	1015	x = ((x >> 8) & 0x00ff00ff) \| ((x & 0x00ff00ff) << 8);
…		…
874	return x;	1018	return x;
875	}	1019	}
876		1020
877	/* popcount64 is only available on 64 bit cpus as gcc builtin */	1021	/* popcount64 is only available on 64 bit cpus as gcc builtin */
878	/* so for this version we are lazy */	1022	/* so for this version we are lazy */
879	ecb_function_ int ecb_popcount64 (uint64_t x) ecb_const;	1023	ecb_function_ ecb_const int ecb_popcount64 (uint64_t x);
880	ecb_function_ int	1024	ecb_function_ ecb_const int
881	ecb_popcount64 (uint64_t x)	1025	ecb_popcount64 (uint64_t x)
882	{	1026	{
883	return ecb_popcount32 (x) + ecb_popcount32 (x >> 32);	1027	return ecb_popcount32 (x) + ecb_popcount32 (x >> 32);
884	}	1028	}
885		1029
886	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);
887	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);
888	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);
889	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);
890	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);
891	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);
892	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);
893	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);
894		1038
895	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); }
896	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); }
897	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); }
898	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); }
899	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); }
900	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); }
901	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); }
902	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); }
903		1047
904	#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
905	#define ecb_bswap16(x) (__builtin_bswap32 (x) >> 16)	1052	#define ecb_bswap16(x) (__builtin_bswap32 (x) >> 16)
		1053	#endif
906	#define ecb_bswap32(x) __builtin_bswap32 (x)	1054	#define ecb_bswap32(x) __builtin_bswap32 (x)
907	#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)))
908	#else	1061	#else
909	ecb_function_ uint16_t ecb_bswap16 (uint16_t x) ecb_const;	1062	ecb_function_ ecb_const uint16_t ecb_bswap16 (uint16_t x);
910	ecb_function_ uint16_t	1063	ecb_function_ ecb_const uint16_t
911	ecb_bswap16 (uint16_t x)	1064	ecb_bswap16 (uint16_t x)
912	{	1065	{
913	return ecb_rotl16 (x, 8);	1066	return ecb_rotl16 (x, 8);
914	}	1067	}
915		1068
916	ecb_function_ uint32_t ecb_bswap32 (uint32_t x) ecb_const;	1069	ecb_function_ ecb_const uint32_t ecb_bswap32 (uint32_t x);
917	ecb_function_ uint32_t	1070	ecb_function_ ecb_const uint32_t
918	ecb_bswap32 (uint32_t x)	1071	ecb_bswap32 (uint32_t x)
919	{	1072	{
920	return (((uint32_t)ecb_bswap16 (x)) << 16) \| ecb_bswap16 (x >> 16);	1073	return (((uint32_t)ecb_bswap16 (x)) << 16) \| ecb_bswap16 (x >> 16);
921	}	1074	}
922		1075
923	ecb_function_ uint64_t ecb_bswap64 (uint64_t x) ecb_const;	1076	ecb_function_ ecb_const uint64_t ecb_bswap64 (uint64_t x);
924	ecb_function_ uint64_t	1077	ecb_function_ ecb_const uint64_t
925	ecb_bswap64 (uint64_t x)	1078	ecb_bswap64 (uint64_t x)
926	{	1079	{
927	return (((uint64_t)ecb_bswap32 (x)) << 32) \| ecb_bswap32 (x >> 32);	1080	return (((uint64_t)ecb_bswap32 (x)) << 32) \| ecb_bswap32 (x >> 32);
928	}	1081	}
929	#endif	1082	#endif
930		1083
931	#if ECB_GCC_VERSION(4,5)	1084	#if ECB_GCC_VERSION(4,5) \|\| ECB_CLANG_BUILTIN(__builtin_unreachable)
932	#define ecb_unreachable() __builtin_unreachable ()	1085	#define ecb_unreachable() __builtin_unreachable ()
933	#else	1086	#else
934	/* 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 :/ */
935	ecb_inline void ecb_unreachable (void) ecb_noreturn;	1088	ecb_inline ecb_noreturn void ecb_unreachable (void);
936	ecb_inline void ecb_unreachable (void) { }	1089	ecb_inline ecb_noreturn void ecb_unreachable (void) { }
937	#endif	1090	#endif
938		1091
939	/* try to tell the compiler that some condition is definitely true */	1092	/* try to tell the compiler that some condition is definitely true */
940	#define ecb_assume(cond) do { if (!(cond)) ecb_unreachable (); } while (0)	1093	#define ecb_assume(cond) if (!(cond)) ecb_unreachable (); else 0
941		1094
942	ecb_inline unsigned char ecb_byteorder_helper (void) ecb_const;	1095	ecb_inline ecb_const unsigned char ecb_byteorder_helper (void);
943	ecb_inline unsigned char	1096	ecb_inline ecb_const unsigned char
944	ecb_byteorder_helper (void)	1097	ecb_byteorder_helper (void)
945	{	1098	{
946	const uint32_t u = 0x11223344;	1099	/* the union code still generates code under pressure in gcc, */
947	return (unsigned char )&u;	1100	/* but less than using pointers, and always seems to */
		1101	/* successfully return a constant. */
		1102	/* the reason why we have this horrible preprocessor mess */
		1103	/* is to avoid it in all cases, at least on common architectures */
		1104	/* or when using a recent enough gcc version (>= 4.6) */
		1105	#if ((__i386 \|\| __i386__) && !__VOS__) \|\| _M_IX86 \|\| ECB_GCC_AMD64 \|\| ECB_MSVC_AMD64
		1106	return 0x44;
		1107	#elif __BYTE_ORDER__ && __BYTE_ORDER__ == __ORDER_LITTLE_ENDIAN__
		1108	return 0x44;
		1109	#elif __BYTE_ORDER__ && __BYTE_ORDER__ == __ORDER_BIG_ENDIAN__
		1110	return 0x11;
		1111	#else
		1112	union
		1113	{
		1114	uint32_t i;
		1115	uint8_t c;
		1116	} u = { 0x11223344 };
		1117	return u.c;
		1118	#endif
948	}	1119	}
949		1120
950	ecb_inline ecb_bool ecb_big_endian (void) ecb_const;	1121	ecb_inline ecb_const ecb_bool ecb_big_endian (void);
951	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; }
952	ecb_inline ecb_bool ecb_little_endian (void) ecb_const;	1123	ecb_inline ecb_const ecb_bool ecb_little_endian (void);
953	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; }
954		1125
955	#if ECB_GCC_VERSION(3,0) \|\| ECB_C99	1126	#if ECB_GCC_VERSION(3,0) \|\| ECB_C99
956	#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))
957	#else	1128	#else
958	#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)))
959	#endif	1130	#endif
960		1131
961	#if __cplusplus	1132	#if ECB_CPP
962	template<typename T>	1133	template<typename T>
963	static inline T ecb_div_rd (T val, T div)	1134	static inline T ecb_div_rd (T val, T div)
964	{	1135	{
965	return val < 0 ? - ((-val + div - 1) / div) : (val ) / div;	1136	return val < 0 ? - ((-val + div - 1) / div) : (val ) / div;
966	}	1137	}
…		…
981	{	1152	{
982	return N;	1153	return N;
983	}	1154	}
984	#else	1155	#else
985	#define ecb_array_length(name) (sizeof (name) / sizeof (name [0]))	1156	#define ecb_array_length(name) (sizeof (name) / sizeof (name [0]))
		1157	#endif
		1158
		1159	/*******************************************************************************/
		1160	/* floating point stuff, can be disabled by defining ECB_NO_LIBM */
		1161
		1162	/* basically, everything uses "ieee pure-endian" floating point numbers */
		1163	/* the only noteworthy exception is ancient armle, which uses order 43218765 */
		1164	#if 0 \
		1165	\|\| __i386 \|\| __i386__ \
		1166	\|\| ECB_GCC_AMD64 \
		1167	\|\| __powerpc__ \|\| __ppc__ \|\| __powerpc64__ \|\| __ppc64__ \
		1168	\|\| defined __s390__ \|\| defined __s390x__ \
		1169	\|\| defined __mips__ \
		1170	\|\| defined __alpha__ \
		1171	\|\| defined __hppa__ \
		1172	\|\| defined __ia64__ \
		1173	\|\| defined __m68k__ \
		1174	\|\| defined __m88k__ \
		1175	\|\| defined __sh__ \
		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__
		1179	#define ECB_STDFP 1
		1180	#include <string.h> /* for memcpy */
		1181	#else
		1182	#define ECB_STDFP 0
		1183	#endif
		1184
		1185	#ifndef ECB_NO_LIBM
		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
		1227	/* convert a float to ieee single/binary32 */
		1228	ecb_function_ ecb_const uint32_t ecb_float_to_binary32 (float x);
		1229	ecb_function_ ecb_const uint32_t
		1230	ecb_float_to_binary32 (float x)
		1231	{
		1232	uint32_t r;
		1233
		1234	#if ECB_STDFP
		1235	memcpy (&r, &x, 4);
		1236	#else
		1237	/* slow emulation, works for anything but -0 */
		1238	uint32_t m;
		1239	int e;
		1240
		1241	if (x == 0e0f ) return 0x00000000U;
		1242	if (x > +3.40282346638528860e+38f) return 0x7f800000U;
		1243	if (x < -3.40282346638528860e+38f) return 0xff800000U;
		1244	if (x != x ) return 0x7fbfffffU;
		1245
		1246	m = ecb_frexpf (x, &e) * 0x1000000U;
		1247
		1248	r = m & 0x80000000U;
		1249
		1250	if (r)
		1251	m = -m;
		1252
		1253	if (e <= -126)
		1254	{
		1255	m &= 0xffffffU;
		1256	m >>= (-125 - e);
		1257	e = -126;
		1258	}
		1259
		1260	r \|= (e + 126) << 23;
		1261	r \|= m & 0x7fffffU;
		1262	#endif
		1263
		1264	return r;
		1265	}
		1266
		1267	/* converts an ieee single/binary32 to a float */
		1268	ecb_function_ ecb_const float ecb_binary32_to_float (uint32_t x);
		1269	ecb_function_ ecb_const float
		1270	ecb_binary32_to_float (uint32_t x)
		1271	{
		1272	float r;
		1273
		1274	#if ECB_STDFP
		1275	memcpy (&r, &x, 4);
		1276	#else
		1277	/* emulation, only works for normals and subnormals and +0 */
		1278	int neg = x >> 31;
		1279	int e = (x >> 23) & 0xffU;
		1280
		1281	x &= 0x7fffffU;
		1282
		1283	if (e)
		1284	x \|= 0x800000U;
		1285	else
		1286	e = 1;
		1287
		1288	/* we distrust ldexpf a bit and do the 2*-24 scaling by an extra multiply /
		1289	r = ecb_ldexpf (x * (0.5f / 0x800000U), e - 126);
		1290
		1291	r = neg ? -r : r;
		1292	#endif
		1293
		1294	return r;
		1295	}
		1296
		1297	/* convert a double to ieee double/binary64 */
		1298	ecb_function_ ecb_const uint64_t ecb_double_to_binary64 (double x);
		1299	ecb_function_ ecb_const uint64_t
		1300	ecb_double_to_binary64 (double x)
		1301	{
		1302	uint64_t r;
		1303
		1304	#if ECB_STDFP
		1305	memcpy (&r, &x, 8);
		1306	#else
		1307	/* slow emulation, works for anything but -0 */
		1308	uint64_t m;
		1309	int e;
		1310
		1311	if (x == 0e0 ) return 0x0000000000000000U;
		1312	if (x > +1.79769313486231470e+308) return 0x7ff0000000000000U;
		1313	if (x < -1.79769313486231470e+308) return 0xfff0000000000000U;
		1314	if (x != x ) return 0X7ff7ffffffffffffU;
		1315
		1316	m = frexp (x, &e) * 0x20000000000000U;
		1317
		1318	r = m & 0x8000000000000000;;
		1319
		1320	if (r)
		1321	m = -m;
		1322
		1323	if (e <= -1022)
		1324	{
		1325	m &= 0x1fffffffffffffU;
		1326	m >>= (-1021 - e);
		1327	e = -1022;
		1328	}
		1329
		1330	r \|= ((uint64_t)(e + 1022)) << 52;
		1331	r \|= m & 0xfffffffffffffU;
		1332	#endif
		1333
		1334	return r;
		1335	}
		1336
		1337	/* converts an ieee double/binary64 to a double */
		1338	ecb_function_ ecb_const double ecb_binary64_to_double (uint64_t x);
		1339	ecb_function_ ecb_const double
		1340	ecb_binary64_to_double (uint64_t x)
		1341	{
		1342	double r;
		1343
		1344	#if ECB_STDFP
		1345	memcpy (&r, &x, 8);
		1346	#else
		1347	/* emulation, only works for normals and subnormals and +0 */
		1348	int neg = x >> 63;
		1349	int e = (x >> 52) & 0x7ffU;
		1350
		1351	x &= 0xfffffffffffffU;
		1352
		1353	if (e)
		1354	x \|= 0x10000000000000U;
		1355	else
		1356	e = 1;
		1357
		1358	/* we distrust ldexp a bit and do the 2*-53 scaling by an extra multiply /
		1359	r = ldexp (x * (0.5 / 0x10000000000000U), e - 1022);
		1360
		1361	r = neg ? -r : r;
		1362	#endif
		1363
		1364	return r;
		1365	}
		1366
986	#endif	1367	#endif
987		1368
988	#endif	1369	#endif
989		1370
990	/* ECB.H END */	1371	/* ECB.H END */
…		…
1884	ev_syserr ("(libev) error creating signal/async pipe");	2265	ev_syserr ("(libev) error creating signal/async pipe");
1885		2266
1886	fd_intern (fds [0]);	2267	fd_intern (fds [0]);
1887	}	2268	}
1888		2269
1889	fd_intern (fds [1]);
1890
1891	evpipe [0] = fds [0];	2270	evpipe [0] = fds [0];
1892		2271
1893	if (evpipe [1] < 0)	2272	if (evpipe [1] < 0)
1894	evpipe [1] = fds [1]; /* first call, set write fd */	2273	evpipe [1] = fds [1]; /* first call, set write fd */
1895	else	2274	else
…		…
1900	/* so must not be executed on windows */	2279	/* so must not be executed on windows */
1901		2280
1902	dup2 (fds [1], evpipe [1]);	2281	dup2 (fds [1], evpipe [1]);
1903	close (fds [1]);	2282	close (fds [1]);
1904	}	2283	}
		2284
		2285	fd_intern (evpipe [1]);
1905		2286
1906	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);
1907	ev_io_start (EV_A_ &pipe_w);	2288	ev_io_start (EV_A_ &pipe_w);
1908	ev_unref (EV_A); /* watcher should not keep loop alive */	2289	ev_unref (EV_A); /* watcher should not keep loop alive */
1909	}	2290	}
…		…
2028		2409
2029	void	2410	void
2030	ev_feed_signal (int signum) EV_THROW	2411	ev_feed_signal (int signum) EV_THROW
2031	{	2412	{
2032	#if EV_MULTIPLICITY	2413	#if EV_MULTIPLICITY
		2414	EV_P;
		2415	ECB_MEMORY_FENCE_ACQUIRE;
2033	EV_P = signals [signum - 1].loop;	2416	EV_A = signals [signum - 1].loop;
2034		2417
2035	if (!EV_A)	2418	if (!EV_A)
2036	return;	2419	return;
2037	#endif	2420	#endif
2038		2421
…		…
2291	{	2674	{
2292	return userdata;	2675	return userdata;
2293	}	2676	}
2294		2677
2295	void	2678	void
2296	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
2297	{	2680	{
2298	invoke_cb = invoke_pending_cb;	2681	invoke_cb = invoke_pending_cb;
2299	}	2682	}
2300		2683
2301	void	2684	void
…		…
3526	#if EV_MULTIPLICITY	3909	#if EV_MULTIPLICITY
3527	assert (("libev: a signal must not be attached to two different loops",	3910	assert (("libev: a signal must not be attached to two different loops",
3528	!signals [w->signum - 1].loop \|\| signals [w->signum - 1].loop == loop));	3911	!signals [w->signum - 1].loop \|\| signals [w->signum - 1].loop == loop));
3529		3912
3530	signals [w->signum - 1].loop = EV_A;	3913	signals [w->signum - 1].loop = EV_A;
		3914	ECB_MEMORY_FENCE_RELEASE;
3531	#endif	3915	#endif
3532		3916
3533	EV_FREQUENT_CHECK;	3917	EV_FREQUENT_CHECK;
3534		3918
3535	#if EV_USE_SIGNALFD	3919	#if EV_USE_SIGNALFD
…		…
3690	# define EV_INOTIFY_BUFSIZE (sizeof (struct inotify_event) * 2 + NAME_MAX)	4074	# define EV_INOTIFY_BUFSIZE (sizeof (struct inotify_event) * 2 + NAME_MAX)
3691		4075
3692	static void noinline	4076	static void noinline
3693	infy_add (EV_P_ ev_stat *w)	4077	infy_add (EV_P_ ev_stat *w)
3694	{	4078	{
3695	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);
3696		4083
3697	if (w->wd >= 0)	4084	if (w->wd >= 0)
3698	{	4085	{
3699	struct statfs sfs;	4086	struct statfs sfs;
3700		4087
…		…
3704		4091
3705	if (!fs_2625)	4092	if (!fs_2625)
3706	w->timer.repeat = w->interval ? w->interval : DEF_STAT_INTERVAL;	4093	w->timer.repeat = w->interval ? w->interval : DEF_STAT_INTERVAL;
3707	else if (!statfs (w->path, &sfs)	4094	else if (!statfs (w->path, &sfs)
3708	&& (sfs.f_type == 0x1373 /* devfs */	4095	&& (sfs.f_type == 0x1373 /* devfs */
		4096	\|\| sfs.f_type == 0x4006 /* fat */
		4097	\|\| sfs.f_type == 0x4d44 /* msdos */
3709	\|\| 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 */
3710	\|\| sfs.f_type == 0x3153464a /* jfs */	4102	\|\| sfs.f_type == 0x3153464a /* jfs */
		4103	\|\| sfs.f_type == 0x9123683e /* btrfs */
3711	\|\| sfs.f_type == 0x52654973 /* reiser3 */	4104	\|\| sfs.f_type == 0x52654973 /* reiser3 */
3712	\|\| sfs.f_type == 0x01021994 /* tempfs */	4105	\|\| sfs.f_type == 0x01021994 /* tmpfs */
3713	\|\| sfs.f_type == 0x58465342 /* xfs */))	4106	\|\| sfs.f_type == 0x58465342 /* xfs */))
3714	w->timer.repeat = 0.; /* filesystem is local, kernel new enough */	4107	w->timer.repeat = 0.; /* filesystem is local, kernel new enough */
3715	else	4108	else
3716	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 */
3717	}	4110	}

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Comparing libev/ev.c (file contents): Revision 1.448 by root, Tue Jul 24 16:28:08 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 1.448 by root, Tue Jul 24 16:28:08 2012 UTC vs.
Revision 1.477 by root, Sun Aug 9 00:13:28 2015 UTC