[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 1.474 by root, Wed Feb 11 19:20:21 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	/* work around x32 idiocy by defining proper macros */
		572	#if __amd64 \|\| __x86_64 \|\| _M_AMD64 \|\| _M_X64
		573	#if _ILP32
		574	#define ECB_AMD64_X32 1
		575	#else
		576	#define ECB_AMD64 1
		577	#endif
		578	#endif
		579
544	/* many compilers define _GNUC_ to some versions but then only implement	580	/* many compilers define _GNUC_ to some versions but then only implement
545	* what their idiot authors think are the "more important" extensions,	581	* what their idiot authors think are the "more important" extensions,
546	* causing enormous grief in return for some better fake benchmark numbers.	582	* causing enormous grief in return for some better fake benchmark numbers.
547	* or so.	583	* or so.
548	* we try to detect these and simply assume they are not gcc - if they have	584	* 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.	585	* an issue with that they should have done it right in the first place.
550	*/	586	*/
551	#ifndef ECB_GCC_VERSION
552	#if !defined __GNUC_MINOR__ \|\| defined __INTEL_COMPILER \|\| defined __SUNPRO_C \|\| defined __SUNPRO_CC \|\| defined __llvm__ \|\| defined __clang__	587	#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	588	#define ECB_GCC_VERSION(major,minor) 0
554	#else	589	#else
555	#define ECB_GCC_VERSION(major,minor) (__GNUC__ > (major) \|\| (__GNUC__ == (major) && __GNUC_MINOR__ >= (minor)))	590	#define ECB_GCC_VERSION(major,minor) (__GNUC__ > (major) \|\| (__GNUC__ == (major) && __GNUC_MINOR__ >= (minor)))
556	#endif	591	#endif
557	#endif
558		592
559	#define ECB_C (__STDC__+0) /* this assumes that __STDC__ is either empty or a number */	593	#define ECB_CLANG_VERSION(major,minor) (__clang_major__ > (major) \|\| (__clang_major__ == (major) && __clang_minor__ >= (minor)))
560	#define ECB_C99 (__STDC_VERSION__ >= 199901L)	594
561	#define ECB_C11 (__STDC_VERSION__ >= 201112L)	595	#if __clang__ && defined __has_builtin
		596	#define ECB_CLANG_BUILTIN(x) __has_builtin (x)
		597	#else
		598	#define ECB_CLANG_BUILTIN(x) 0
		599	#endif
		600
		601	#if __clang__ && defined __has_extension
		602	#define ECB_CLANG_EXTENSION(x) __has_extension (x)
		603	#else
		604	#define ECB_CLANG_EXTENSION(x) 0
		605	#endif
		606
562	#define ECB_CPP (__cplusplus+0)	607	#define ECB_CPP (__cplusplus+0)
563	#define ECB_CPP11 (__cplusplus >= 201103L)	608	#define ECB_CPP11 (__cplusplus >= 201103L)
		609
		610	#if ECB_CPP
		611	#define ECB_C 0
		612	#define ECB_STDC_VERSION 0
		613	#else
		614	#define ECB_C 1
		615	#define ECB_STDC_VERSION __STDC_VERSION__
		616	#endif
		617
		618	#define ECB_C99 (ECB_STDC_VERSION >= 199901L)
		619	#define ECB_C11 (ECB_STDC_VERSION >= 201112L)
564		620
565	#if ECB_CPP	621	#if ECB_CPP
566	#define ECB_EXTERN_C extern "C"	622	#define ECB_EXTERN_C extern "C"
567	#define ECB_EXTERN_C_BEG ECB_EXTERN_C {	623	#define ECB_EXTERN_C_BEG ECB_EXTERN_C {
568	#define ECB_EXTERN_C_END }	624	#define ECB_EXTERN_C_END }
…		…
601	\|\| defined __ARM_ARCH_6K__ \|\| defined __ARM_ARCH_6ZK__	657	\|\| 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")	658	#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__ \	659	#elif defined __ARM_ARCH_7__ \|\| defined __ARM_ARCH_7A__ \
604	\|\| defined __ARM_ARCH_7M__ \|\| defined __ARM_ARCH_7R__	660	\|\| defined __ARM_ARCH_7M__ \|\| defined __ARM_ARCH_7R__
605	#define ECB_MEMORY_FENCE __asm__ __volatile__ ("dmb" : : : "memory")	661	#define ECB_MEMORY_FENCE __asm__ __volatile__ ("dmb" : : : "memory")
		662	#elif __aarch64__
		663	#define ECB_MEMORY_FENCE __asm__ __volatile__ ("dmb ish" : : : "memory")
606	#elif __sparc \|\| __sparc__	664	#elif (__sparc \|\| __sparc__) && !__sparcv8
607	#define ECB_MEMORY_FENCE __asm__ __volatile__ ("membar #LoadStore \| #LoadLoad \| #StoreStore \| #StoreLoad" : : : "memory")	665	#define ECB_MEMORY_FENCE __asm__ __volatile__ ("membar #LoadStore \| #LoadLoad \| #StoreStore \| #StoreLoad" : : : "memory")
608	#define ECB_MEMORY_FENCE_ACQUIRE __asm__ __volatile__ ("membar #LoadStore \| #LoadLoad" : : : "memory")	666	#define ECB_MEMORY_FENCE_ACQUIRE __asm__ __volatile__ ("membar #LoadStore \| #LoadLoad" : : : "memory")
609	#define ECB_MEMORY_FENCE_RELEASE __asm__ __volatile__ ("membar #LoadStore \| #StoreStore")	667	#define ECB_MEMORY_FENCE_RELEASE __asm__ __volatile__ ("membar #LoadStore \| #StoreStore")
610	#elif defined __s390__ \|\| defined __s390x__	668	#elif defined __s390__ \|\| defined __s390x__
611	#define ECB_MEMORY_FENCE __asm__ __volatile__ ("bcr 15,0" : : : "memory")	669	#define ECB_MEMORY_FENCE __asm__ __volatile__ ("bcr 15,0" : : : "memory")
612	#elif defined __mips__	670	#elif defined __mips__
		671	/* GNU/Linux emulates sync on mips1 architectures, so we force its use */
		672	/* 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")	673	#define ECB_MEMORY_FENCE __asm__ __volatile__ (".set mips2; sync; .set mips0" : : : "memory")
614	#elif defined __alpha__	674	#elif defined __alpha__
615	#define ECB_MEMORY_FENCE __asm__ __volatile__ ("mb" : : : "memory")	675	#define ECB_MEMORY_FENCE __asm__ __volatile__ ("mb" : : : "memory")
616	#elif defined __hppa__	676	#elif defined __hppa__
617	#define ECB_MEMORY_FENCE __asm__ __volatile__ ("" : : : "memory")	677	#define ECB_MEMORY_FENCE __asm__ __volatile__ ("" : : : "memory")
618	#define ECB_MEMORY_FENCE_RELEASE __asm__ __volatile__ ("")	678	#define ECB_MEMORY_FENCE_RELEASE __asm__ __volatile__ ("")
619	#elif defined __ia64__	679	#elif defined __ia64__
620	#define ECB_MEMORY_FENCE __asm__ __volatile__ ("mf" : : : "memory")	680	#define ECB_MEMORY_FENCE __asm__ __volatile__ ("mf" : : : "memory")
		681	#elif defined __m68k__
		682	#define ECB_MEMORY_FENCE __asm__ __volatile__ ("" : : : "memory")
		683	#elif defined __m88k__
		684	#define ECB_MEMORY_FENCE __asm__ __volatile__ ("tb1 0,%%r0,128" : : : "memory")
		685	#elif defined __sh__
		686	#define ECB_MEMORY_FENCE __asm__ __volatile__ ("" : : : "memory")
621	#endif	687	#endif
622	#endif	688	#endif
623	#endif	689	#endif
624		690
625	#ifndef ECB_MEMORY_FENCE	691	#ifndef ECB_MEMORY_FENCE
626	#if ECB_GCC_VERSION(4,7)	692	#if ECB_GCC_VERSION(4,7)
627	/* see comment below (stdatomic.h) about the C11 memory model. */	693	/* see comment below (stdatomic.h) about the C11 memory model. */
628	#define ECB_MEMORY_FENCE __atomic_thread_fence (__ATOMIC_SEQ_CST)	694	#define ECB_MEMORY_FENCE __atomic_thread_fence (__ATOMIC_SEQ_CST)
		695	#define ECB_MEMORY_FENCE_ACQUIRE __atomic_thread_fence (__ATOMIC_ACQUIRE)
		696	#define ECB_MEMORY_FENCE_RELEASE __atomic_thread_fence (__ATOMIC_RELEASE)
629		697
630	/* The __has_feature syntax from clang is so misdesigned that we cannot use it	698	#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.	699	/* see comment below (stdatomic.h) about the C11 memory model. */
636	* #define ECB_MEMORY_FENCE __c11_atomic_thread_fence (__ATOMIC_SEQ_CST)	700	#define ECB_MEMORY_FENCE __c11_atomic_thread_fence (__ATOMIC_SEQ_CST)
637	*/	701	#define ECB_MEMORY_FENCE_ACQUIRE __c11_atomic_thread_fence (__ATOMIC_ACQUIRE)
		702	#define ECB_MEMORY_FENCE_RELEASE __c11_atomic_thread_fence (__ATOMIC_RELEASE)
638		703
639	#elif ECB_GCC_VERSION(4,4) \|\| defined __INTEL_COMPILER \|\| defined __clang__	704	#elif ECB_GCC_VERSION(4,4) \|\| defined __INTEL_COMPILER \|\| defined __clang__
640	#define ECB_MEMORY_FENCE __sync_synchronize ()	705	#define ECB_MEMORY_FENCE __sync_synchronize ()
		706	#elif _MSC_VER >= 1500 /* VC++ 2008 */
		707	/* apparently, microsoft broke all the memory barrier stuff in Visual Studio 2008... */
		708	#pragma intrinsic(_ReadBarrier,_WriteBarrier,_ReadWriteBarrier)
		709	#define ECB_MEMORY_FENCE _ReadWriteBarrier (); MemoryBarrier()
		710	#define ECB_MEMORY_FENCE_ACQUIRE _ReadWriteBarrier (); MemoryBarrier() /* according to msdn, _ReadBarrier is not a load fence */
		711	#define ECB_MEMORY_FENCE_RELEASE _WriteBarrier (); MemoryBarrier()
641	#elif _MSC_VER >= 1400 /* VC++ 2005 */	712	#elif _MSC_VER >= 1400 /* VC++ 2005 */
642	#pragma intrinsic(_ReadBarrier,_WriteBarrier,_ReadWriteBarrier)	713	#pragma intrinsic(_ReadBarrier,_WriteBarrier,_ReadWriteBarrier)
643	#define ECB_MEMORY_FENCE _ReadWriteBarrier ()	714	#define ECB_MEMORY_FENCE _ReadWriteBarrier ()
644	#define ECB_MEMORY_FENCE_ACQUIRE _ReadWriteBarrier () /* according to msdn, _ReadBarrier is not a load fence */	715	#define ECB_MEMORY_FENCE_ACQUIRE _ReadWriteBarrier () /* according to msdn, _ReadBarrier is not a load fence */
645	#define ECB_MEMORY_FENCE_RELEASE _WriteBarrier ()	716	#define ECB_MEMORY_FENCE_RELEASE _WriteBarrier ()
…		…
665	/* any fence other than seq_cst, which isn't very efficient for us. */	736	/* 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 */	737	/* 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 */	738	/* for most usages, or gcc and clang have a bug */
668	/* I currently lean towards the latter, and inefficiently implement */	739	/* I currently lean towards the latter, and inefficiently implement */
669	/* all three of ecb's fences as a seq_cst fence */	740	/* all three of ecb's fences as a seq_cst fence */
		741	/* Update, gcc-4.8 generates mfence for all c++ fences, but nothing */
		742	/* for all __atomic_thread_fence's except seq_cst */
670	#define ECB_MEMORY_FENCE atomic_thread_fence (memory_order_seq_cst)	743	#define ECB_MEMORY_FENCE atomic_thread_fence (memory_order_seq_cst)
671	#endif	744	#endif
672	#endif	745	#endif
673		746
674	#ifndef ECB_MEMORY_FENCE	747	#ifndef ECB_MEMORY_FENCE
…		…
697	#define ECB_MEMORY_FENCE_RELEASE ECB_MEMORY_FENCE	770	#define ECB_MEMORY_FENCE_RELEASE ECB_MEMORY_FENCE
698	#endif	771	#endif
699		772
700	/*****************************************************************************/	773	/*****************************************************************************/
701		774
702	#if __cplusplus	775	#if ECB_CPP
703	#define ecb_inline static inline	776	#define ecb_inline static inline
704	#elif ECB_GCC_VERSION(2,5)	777	#elif ECB_GCC_VERSION(2,5)
705	#define ecb_inline static __inline__	778	#define ecb_inline static __inline__
706	#elif ECB_C99	779	#elif ECB_C99
707	#define ecb_inline static inline	780	#define ecb_inline static inline
…		…
724	#define ECB_STRINGIFY_(a) # a	797	#define ECB_STRINGIFY_(a) # a
725	#define ECB_STRINGIFY(a) ECB_STRINGIFY_(a)	798	#define ECB_STRINGIFY(a) ECB_STRINGIFY_(a)
726		799
727	#define ecb_function_ ecb_inline	800	#define ecb_function_ ecb_inline
728		801
729	#if ECB_GCC_VERSION(3,1)	802	#if ECB_GCC_VERSION(3,1) \|\| ECB_CLANG_VERSION(2,8)
730	#define ecb_attribute(attrlist) __attribute__(attrlist)	803	#define ecb_attribute(attrlist) __attribute__ (attrlist)
		804	#else
		805	#define ecb_attribute(attrlist)
		806	#endif
		807
		808	#if ECB_GCC_VERSION(3,1) \|\| ECB_CLANG_BUILTIN(__builtin_constant_p)
731	#define ecb_is_constant(expr) __builtin_constant_p (expr)	809	#define ecb_is_constant(expr) __builtin_constant_p (expr)
		810	#else
		811	/* possible C11 impl for integral types
		812	typedef struct ecb_is_constant_struct ecb_is_constant_struct;
		813	#define ecb_is_constant(expr) _Generic ((1 ? (struct ecb_is_constant_struct )0 : (void )((expr) - (expr)), ecb_is_constant_struct : 0, default: 1)) /
		814
		815	#define ecb_is_constant(expr) 0
		816	#endif
		817
		818	#if ECB_GCC_VERSION(3,1) \|\| ECB_CLANG_BUILTIN(__builtin_expect)
732	#define ecb_expect(expr,value) __builtin_expect ((expr),(value))	819	#define ecb_expect(expr,value) __builtin_expect ((expr),(value))
		820	#else
		821	#define ecb_expect(expr,value) (expr)
		822	#endif
		823
		824	#if ECB_GCC_VERSION(3,1) \|\| ECB_CLANG_BUILTIN(__builtin_prefetch)
733	#define ecb_prefetch(addr,rw,locality) __builtin_prefetch (addr, rw, locality)	825	#define ecb_prefetch(addr,rw,locality) __builtin_prefetch (addr, rw, locality)
734	#else	826	#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)	827	#define ecb_prefetch(addr,rw,locality)
739	#endif	828	#endif
740		829
741	/* no emulation for ecb_decltype */	830	/* no emulation for ecb_decltype */
742	#if ECB_GCC_VERSION(4,5)	831	#if ECB_CPP11
		832	// older implementations might have problems with decltype(x)::type, work around it
		833	template<class T> struct ecb_decltype_t { typedef T type; };
743	#define ecb_decltype(x) __decltype(x)	834	#define ecb_decltype(x) ecb_decltype_t<decltype (x)>::type
744	#elif ECB_GCC_VERSION(3,0)	835	#elif ECB_GCC_VERSION(3,0) \|\| ECB_CLANG_VERSION(2,8)
745	#define ecb_decltype(x) __typeof(x)	836	#define ecb_decltype(x) __typeof__ (x)
		837	#endif
		838
		839	#if _MSC_VER >= 1300
		840	#define ecb_deprecated __declspec (deprecated)
		841	#else
		842	#define ecb_deprecated ecb_attribute ((__deprecated__))
746	#endif	843	#endif
747		844
748	#define ecb_noinline ecb_attribute ((__noinline__))	845	#define ecb_noinline ecb_attribute ((__noinline__))
749	#define ecb_unused ecb_attribute ((__unused__))	846	#define ecb_unused ecb_attribute ((__unused__))
750	#define ecb_const ecb_attribute ((__const__))	847	#define ecb_const ecb_attribute ((__const__))
751	#define ecb_pure ecb_attribute ((__pure__))	848	#define ecb_pure ecb_attribute ((__pure__))
752		849
753	#if ECB_C11	850	/* TODO http://msdn.microsoft.com/en-us/library/k6ktzx3s.aspx __declspec(noreturn) */
		851	#if ECB_C11 \|\| __IBMC_NORETURN
		852	/* http://pic.dhe.ibm.com/infocenter/compbg/v121v141/topic/com.ibm.xlcpp121.bg.doc/language_ref/noreturn.html */
754	#define ecb_noreturn _Noreturn	853	#define ecb_noreturn _Noreturn
755	#else	854	#else
756	#define ecb_noreturn ecb_attribute ((__noreturn__))	855	#define ecb_noreturn ecb_attribute ((__noreturn__))
757	#endif	856	#endif
758		857
…		…
774	/* for compatibility to the rest of the world */	873	/* for compatibility to the rest of the world */
775	#define ecb_likely(expr) ecb_expect_true (expr)	874	#define ecb_likely(expr) ecb_expect_true (expr)
776	#define ecb_unlikely(expr) ecb_expect_false (expr)	875	#define ecb_unlikely(expr) ecb_expect_false (expr)
777		876
778	/* count trailing zero bits and count # of one bits */	877	/* count trailing zero bits and count # of one bits */
779	#if ECB_GCC_VERSION(3,4)	878	#if ECB_GCC_VERSION(3,4) \
		879	\|\| (ECB_CLANG_BUILTIN(__builtin_clz) && ECB_CLANG_BUILTIN(__builtin_clzll) \
		880	&& ECB_CLANG_BUILTIN(__builtin_ctz) && ECB_CLANG_BUILTIN(__builtin_ctzll) \
		881	&& ECB_CLANG_BUILTIN(__builtin_popcount))
780	/* we assume int == 32 bit, long == 32 or 64 bit and long long == 64 bit */	882	/* we assume int == 32 bit, long == 32 or 64 bit and long long == 64 bit */
781	#define ecb_ld32(x) (__builtin_clz (x) ^ 31)	883	#define ecb_ld32(x) (__builtin_clz (x) ^ 31)
782	#define ecb_ld64(x) (__builtin_clzll (x) ^ 63)	884	#define ecb_ld64(x) (__builtin_clzll (x) ^ 63)
783	#define ecb_ctz32(x) __builtin_ctz (x)	885	#define ecb_ctz32(x) __builtin_ctz (x)
784	#define ecb_ctz64(x) __builtin_ctzll (x)	886	#define ecb_ctz64(x) __builtin_ctzll (x)
785	#define ecb_popcount32(x) __builtin_popcount (x)	887	#define ecb_popcount32(x) __builtin_popcount (x)
786	/* no popcountll */	888	/* no popcountll */
787	#else	889	#else
788	ecb_function_ int ecb_ctz32 (uint32_t x) ecb_const;	890	ecb_function_ ecb_const int ecb_ctz32 (uint32_t x);
789	ecb_function_ int	891	ecb_function_ ecb_const int
790	ecb_ctz32 (uint32_t x)	892	ecb_ctz32 (uint32_t x)
791	{	893	{
792	int r = 0;	894	int r = 0;
793		895
794	x &= ~x + 1; /* this isolates the lowest bit */	896	x &= ~x + 1; /* this isolates the lowest bit */
…		…
808	#endif	910	#endif
809		911
810	return r;	912	return r;
811	}	913	}
812		914
813	ecb_function_ int ecb_ctz64 (uint64_t x) ecb_const;	915	ecb_function_ ecb_const int ecb_ctz64 (uint64_t x);
814	ecb_function_ int	916	ecb_function_ ecb_const int
815	ecb_ctz64 (uint64_t x)	917	ecb_ctz64 (uint64_t x)
816	{	918	{
817	int shift = x & 0xffffffffU ? 0 : 32;	919	int shift = x & 0xffffffffU ? 0 : 32;
818	return ecb_ctz32 (x >> shift) + shift;	920	return ecb_ctz32 (x >> shift) + shift;
819	}	921	}
820		922
821	ecb_function_ int ecb_popcount32 (uint32_t x) ecb_const;	923	ecb_function_ ecb_const int ecb_popcount32 (uint32_t x);
822	ecb_function_ int	924	ecb_function_ ecb_const int
823	ecb_popcount32 (uint32_t x)	925	ecb_popcount32 (uint32_t x)
824	{	926	{
825	x -= (x >> 1) & 0x55555555;	927	x -= (x >> 1) & 0x55555555;
826	x = ((x >> 2) & 0x33333333) + (x & 0x33333333);	928	x = ((x >> 2) & 0x33333333) + (x & 0x33333333);
827	x = ((x >> 4) + x) & 0x0f0f0f0f;	929	x = ((x >> 4) + x) & 0x0f0f0f0f;
828	x *= 0x01010101;	930	x *= 0x01010101;
829		931
830	return x >> 24;	932	return x >> 24;
831	}	933	}
832		934
833	ecb_function_ int ecb_ld32 (uint32_t x) ecb_const;	935	ecb_function_ ecb_const int ecb_ld32 (uint32_t x);
834	ecb_function_ int ecb_ld32 (uint32_t x)	936	ecb_function_ ecb_const int ecb_ld32 (uint32_t x)
835	{	937	{
836	int r = 0;	938	int r = 0;
837		939
838	if (x >> 16) { x >>= 16; r += 16; }	940	if (x >> 16) { x >>= 16; r += 16; }
839	if (x >> 8) { x >>= 8; r += 8; }	941	if (x >> 8) { x >>= 8; r += 8; }
…		…
842	if (x >> 1) { r += 1; }	944	if (x >> 1) { r += 1; }
843		945
844	return r;	946	return r;
845	}	947	}
846		948
847	ecb_function_ int ecb_ld64 (uint64_t x) ecb_const;	949	ecb_function_ ecb_const int ecb_ld64 (uint64_t x);
848	ecb_function_ int ecb_ld64 (uint64_t x)	950	ecb_function_ ecb_const int ecb_ld64 (uint64_t x)
849	{	951	{
850	int r = 0;	952	int r = 0;
851		953
852	if (x >> 32) { x >>= 32; r += 32; }	954	if (x >> 32) { x >>= 32; r += 32; }
853		955
854	return r + ecb_ld32 (x);	956	return r + ecb_ld32 (x);
855	}	957	}
856	#endif	958	#endif
857		959
858	ecb_function_ ecb_bool ecb_is_pot32 (uint32_t x) ecb_const;	960	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)); }	961	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;	962	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)); }	963	ecb_function_ ecb_const ecb_bool ecb_is_pot64 (uint64_t x) { return !(x & (x - 1)); }
862		964
863	ecb_function_ uint8_t ecb_bitrev8 (uint8_t x) ecb_const;	965	ecb_function_ ecb_const uint8_t ecb_bitrev8 (uint8_t x);
864	ecb_function_ uint8_t ecb_bitrev8 (uint8_t x)	966	ecb_function_ ecb_const uint8_t ecb_bitrev8 (uint8_t x)
865	{	967	{
866	return ( (x * 0x0802U & 0x22110U)	968	return ( (x * 0x0802U & 0x22110U)
867	\| (x * 0x8020U & 0x88440U)) * 0x10101U >> 16;	969	\| (x * 0x8020U & 0x88440U)) * 0x10101U >> 16;
868	}	970	}
869		971
870	ecb_function_ uint16_t ecb_bitrev16 (uint16_t x) ecb_const;	972	ecb_function_ ecb_const uint16_t ecb_bitrev16 (uint16_t x);
871	ecb_function_ uint16_t ecb_bitrev16 (uint16_t x)	973	ecb_function_ ecb_const uint16_t ecb_bitrev16 (uint16_t x)
872	{	974	{
873	x = ((x >> 1) & 0x5555) \| ((x & 0x5555) << 1);	975	x = ((x >> 1) & 0x5555) \| ((x & 0x5555) << 1);
874	x = ((x >> 2) & 0x3333) \| ((x & 0x3333) << 2);	976	x = ((x >> 2) & 0x3333) \| ((x & 0x3333) << 2);
875	x = ((x >> 4) & 0x0f0f) \| ((x & 0x0f0f) << 4);	977	x = ((x >> 4) & 0x0f0f) \| ((x & 0x0f0f) << 4);
876	x = ( x >> 8 ) \| ( x << 8);	978	x = ( x >> 8 ) \| ( x << 8);
877		979
878	return x;	980	return x;
879	}	981	}
880		982
881	ecb_function_ uint32_t ecb_bitrev32 (uint32_t x) ecb_const;	983	ecb_function_ ecb_const uint32_t ecb_bitrev32 (uint32_t x);
882	ecb_function_ uint32_t ecb_bitrev32 (uint32_t x)	984	ecb_function_ ecb_const uint32_t ecb_bitrev32 (uint32_t x)
883	{	985	{
884	x = ((x >> 1) & 0x55555555) \| ((x & 0x55555555) << 1);	986	x = ((x >> 1) & 0x55555555) \| ((x & 0x55555555) << 1);
885	x = ((x >> 2) & 0x33333333) \| ((x & 0x33333333) << 2);	987	x = ((x >> 2) & 0x33333333) \| ((x & 0x33333333) << 2);
886	x = ((x >> 4) & 0x0f0f0f0f) \| ((x & 0x0f0f0f0f) << 4);	988	x = ((x >> 4) & 0x0f0f0f0f) \| ((x & 0x0f0f0f0f) << 4);
887	x = ((x >> 8) & 0x00ff00ff) \| ((x & 0x00ff00ff) << 8);	989	x = ((x >> 8) & 0x00ff00ff) \| ((x & 0x00ff00ff) << 8);
…		…
890	return x;	992	return x;
891	}	993	}
892		994
893	/* popcount64 is only available on 64 bit cpus as gcc builtin */	995	/* popcount64 is only available on 64 bit cpus as gcc builtin */
894	/* so for this version we are lazy */	996	/* so for this version we are lazy */
895	ecb_function_ int ecb_popcount64 (uint64_t x) ecb_const;	997	ecb_function_ ecb_const int ecb_popcount64 (uint64_t x);
896	ecb_function_ int	998	ecb_function_ ecb_const int
897	ecb_popcount64 (uint64_t x)	999	ecb_popcount64 (uint64_t x)
898	{	1000	{
899	return ecb_popcount32 (x) + ecb_popcount32 (x >> 32);	1001	return ecb_popcount32 (x) + ecb_popcount32 (x >> 32);
900	}	1002	}
901		1003
902	ecb_inline uint8_t ecb_rotl8 (uint8_t x, unsigned int count) ecb_const;	1004	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;	1005	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;	1006	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;	1007	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;	1008	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;	1009	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;	1010	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;	1011	ecb_inline ecb_const uint64_t ecb_rotr64 (uint64_t x, unsigned int count);
910		1012
911	ecb_inline uint8_t ecb_rotl8 (uint8_t x, unsigned int count) { return (x >> ( 8 - count)) \| (x << count); }	1013	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); }	1014	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); }	1015	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); }	1016	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); }	1017	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); }	1018	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); }	1019	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); }	1020	ecb_inline ecb_const uint64_t ecb_rotr64 (uint64_t x, unsigned int count) { return (x << (64 - count)) \| (x >> count); }
919		1021
920	#if ECB_GCC_VERSION(4,3)	1022	#if ECB_GCC_VERSION(4,3) \|\| (ECB_CLANG_BUILTIN(__builtin_bswap32) && ECB_CLANG_BUILTIN(__builtin_bswap64))
921	#define ecb_bswap16(x) (__builtin_bswap32 (x) >> 16)	1023	#define ecb_bswap16(x) (__builtin_bswap32 (x) >> 16)
922	#define ecb_bswap32(x) __builtin_bswap32 (x)	1024	#define ecb_bswap32(x) __builtin_bswap32 (x)
923	#define ecb_bswap64(x) __builtin_bswap64 (x)	1025	#define ecb_bswap64(x) __builtin_bswap64 (x)
924	#else	1026	#else
925	ecb_function_ uint16_t ecb_bswap16 (uint16_t x) ecb_const;	1027	ecb_function_ ecb_const uint16_t ecb_bswap16 (uint16_t x);
926	ecb_function_ uint16_t	1028	ecb_function_ ecb_const uint16_t
927	ecb_bswap16 (uint16_t x)	1029	ecb_bswap16 (uint16_t x)
928	{	1030	{
929	return ecb_rotl16 (x, 8);	1031	return ecb_rotl16 (x, 8);
930	}	1032	}
931		1033
932	ecb_function_ uint32_t ecb_bswap32 (uint32_t x) ecb_const;	1034	ecb_function_ ecb_const uint32_t ecb_bswap32 (uint32_t x);
933	ecb_function_ uint32_t	1035	ecb_function_ ecb_const uint32_t
934	ecb_bswap32 (uint32_t x)	1036	ecb_bswap32 (uint32_t x)
935	{	1037	{
936	return (((uint32_t)ecb_bswap16 (x)) << 16) \| ecb_bswap16 (x >> 16);	1038	return (((uint32_t)ecb_bswap16 (x)) << 16) \| ecb_bswap16 (x >> 16);
937	}	1039	}
938		1040
939	ecb_function_ uint64_t ecb_bswap64 (uint64_t x) ecb_const;	1041	ecb_function_ ecb_const uint64_t ecb_bswap64 (uint64_t x);
940	ecb_function_ uint64_t	1042	ecb_function_ ecb_const uint64_t
941	ecb_bswap64 (uint64_t x)	1043	ecb_bswap64 (uint64_t x)
942	{	1044	{
943	return (((uint64_t)ecb_bswap32 (x)) << 32) \| ecb_bswap32 (x >> 32);	1045	return (((uint64_t)ecb_bswap32 (x)) << 32) \| ecb_bswap32 (x >> 32);
944	}	1046	}
945	#endif	1047	#endif
946		1048
947	#if ECB_GCC_VERSION(4,5)	1049	#if ECB_GCC_VERSION(4,5) \|\| ECB_CLANG_BUILTIN(__builtin_unreachable)
948	#define ecb_unreachable() __builtin_unreachable ()	1050	#define ecb_unreachable() __builtin_unreachable ()
949	#else	1051	#else
950	/* this seems to work fine, but gcc always emits a warning for it :/ */	1052	/* this seems to work fine, but gcc always emits a warning for it :/ */
951	ecb_inline void ecb_unreachable (void) ecb_noreturn;	1053	ecb_inline ecb_noreturn void ecb_unreachable (void);
952	ecb_inline void ecb_unreachable (void) { }	1054	ecb_inline ecb_noreturn void ecb_unreachable (void) { }
953	#endif	1055	#endif
954		1056
955	/* try to tell the compiler that some condition is definitely true */	1057	/* try to tell the compiler that some condition is definitely true */
956	#define ecb_assume(cond) if (!(cond)) ecb_unreachable (); else 0	1058	#define ecb_assume(cond) if (!(cond)) ecb_unreachable (); else 0
957		1059
958	ecb_inline unsigned char ecb_byteorder_helper (void) ecb_const;	1060	ecb_inline ecb_const unsigned char ecb_byteorder_helper (void);
959	ecb_inline unsigned char	1061	ecb_inline ecb_const unsigned char
960	ecb_byteorder_helper (void)	1062	ecb_byteorder_helper (void)
961	{	1063	{
962	/* the union code still generates code under pressure in gcc, */	1064	/* the union code still generates code under pressure in gcc, */
963	/* but less than using pointers, and always seems to */	1065	/* but less than using pointers, and always seems to */
964	/* successfully return a constant. */	1066	/* successfully return a constant. */
…		…
979	} u = { 0x11223344 };	1081	} u = { 0x11223344 };
980	return u.c;	1082	return u.c;
981	#endif	1083	#endif
982	}	1084	}
983		1085
984	ecb_inline ecb_bool ecb_big_endian (void) ecb_const;	1086	ecb_inline ecb_const ecb_bool ecb_big_endian (void);
985	ecb_inline ecb_bool ecb_big_endian (void) { return ecb_byteorder_helper () == 0x11; }	1087	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;	1088	ecb_inline ecb_const ecb_bool ecb_little_endian (void);
987	ecb_inline ecb_bool ecb_little_endian (void) { return ecb_byteorder_helper () == 0x44; }	1089	ecb_inline ecb_const ecb_bool ecb_little_endian (void) { return ecb_byteorder_helper () == 0x44; }
988		1090
989	#if ECB_GCC_VERSION(3,0) \|\| ECB_C99	1091	#if ECB_GCC_VERSION(3,0) \|\| ECB_C99
990	#define ecb_mod(m,n) ((m) % (n) + ((m) % (n) < 0 ? (n) : 0))	1092	#define ecb_mod(m,n) ((m) % (n) + ((m) % (n) < 0 ? (n) : 0))
991	#else	1093	#else
992	#define ecb_mod(m,n) ((m) < 0 ? ((n) - 1 - ((-1 - (m)) % (n))) : ((m) % (n)))	1094	#define ecb_mod(m,n) ((m) < 0 ? ((n) - 1 - ((-1 - (m)) % (n))) : ((m) % (n)))
993	#endif	1095	#endif
994		1096
995	#if __cplusplus	1097	#if ECB_CPP
996	template<typename T>	1098	template<typename T>
997	static inline T ecb_div_rd (T val, T div)	1099	static inline T ecb_div_rd (T val, T div)
998	{	1100	{
999	return val < 0 ? - ((-val + div - 1) / div) : (val ) / div;	1101	return val < 0 ? - ((-val + div - 1) / div) : (val ) / div;
1000	}	1102	}
…		…
1026	/* the only noteworthy exception is ancient armle, which uses order 43218765 */	1128	/* the only noteworthy exception is ancient armle, which uses order 43218765 */
1027	#if 0 \	1129	#if 0 \
1028	\|\| __i386 \|\| __i386__ \	1130	\|\| __i386 \|\| __i386__ \
1029	\|\| __amd64 \|\| __amd64__ \|\| __x86_64 \|\| __x86_64__ \	1131	\|\| __amd64 \|\| __amd64__ \|\| __x86_64 \|\| __x86_64__ \
1030	\|\| __powerpc__ \|\| __ppc__ \|\| __powerpc64__ \|\| __ppc64__ \	1132	\|\| __powerpc__ \|\| __ppc__ \|\| __powerpc64__ \|\| __ppc64__ \
1031	\|\| defined __arm__ && defined __ARM_EABI__ \
1032	\|\| defined __s390__ \|\| defined __s390x__ \	1133	\|\| defined __s390__ \|\| defined __s390x__ \
1033	\|\| defined __mips__ \	1134	\|\| defined __mips__ \
1034	\|\| defined __alpha__ \	1135	\|\| defined __alpha__ \
1035	\|\| defined __hppa__ \	1136	\|\| defined __hppa__ \
1036	\|\| defined __ia64__ \	1137	\|\| defined __ia64__ \
		1138	\|\| defined __m68k__ \
		1139	\|\| defined __m88k__ \
		1140	\|\| defined __sh__ \
1037	\|\| defined _M_IX86 \|\| defined _M_AMD64 \|\| defined _M_IA64	1141	\|\| defined _M_IX86 \|\| defined _M_AMD64 \|\| defined _M_IA64 \
		1142	\|\| (defined __arm__ && (defined __ARM_EABI__ \|\| defined __EABI__ \|\| defined __VFP_FP__ \|\| defined _WIN32_WCE \|\| defined __ANDROID__)) \
		1143	\|\| defined __aarch64__
1038	#define ECB_STDFP 1	1144	#define ECB_STDFP 1
1039	#include <string.h> /* for memcpy */	1145	#include <string.h> /* for memcpy */
1040	#else	1146	#else
1041	#define ECB_STDFP 0	1147	#define ECB_STDFP 0
1042	#include <math.h> /* for frexp, ldexp */
1043	#endif	1148	#endif
1044		1149
1045	#ifndef ECB_NO_LIBM	1150	#ifndef ECB_NO_LIBM
1046		1151
		1152	#include <math.h> /* for frexp, ldexp, INFINITY, NAN */
		1153
		1154	/* only the oldest of old doesn't have this one. solaris. */
		1155	#ifdef INFINITY
		1156	#define ECB_INFINITY INFINITY
		1157	#else
		1158	#define ECB_INFINITY HUGE_VAL
		1159	#endif
		1160
		1161	#ifdef NAN
		1162	#define ECB_NAN NAN
		1163	#else
		1164	#define ECB_NAN ECB_INFINITY
		1165	#endif
		1166
		1167	#if ECB_C99 \|\| _XOPEN_VERSION >= 600 \|\| _POSIX_VERSION >= 200112L
		1168	#define ecb_ldexpf(x,e) ldexpf ((x), (e))
		1169	#else
		1170	#define ecb_ldexpf(x,e) (float) ldexp ((x), (e))
		1171	#endif
		1172
		1173	/* converts an ieee half/binary16 to a float */
		1174	ecb_function_ ecb_const float ecb_binary16_to_float (uint16_t x);
		1175	ecb_function_ ecb_const float
		1176	ecb_binary16_to_float (uint16_t x)
		1177	{
		1178	int e = (x >> 10) & 0x1f;
		1179	int m = x & 0x3ff;
		1180	float r;
		1181
		1182	if (!e ) r = ecb_ldexpf (m , -24);
		1183	else if (e != 31) r = ecb_ldexpf (m + 0x400, e - 25);
		1184	else if (m ) r = ECB_NAN;
		1185	else r = ECB_INFINITY;
		1186
		1187	return x & 0x8000 ? -r : r;
		1188	}
		1189
1047	/* convert a float to ieee single/binary32 */	1190	/* convert a float to ieee single/binary32 */
1048	ecb_function_ uint32_t ecb_float_to_binary32 (float x) ecb_const;	1191	ecb_function_ ecb_const uint32_t ecb_float_to_binary32 (float x);
1049	ecb_function_ uint32_t	1192	ecb_function_ ecb_const uint32_t
1050	ecb_float_to_binary32 (float x)	1193	ecb_float_to_binary32 (float x)
1051	{	1194	{
1052	uint32_t r;	1195	uint32_t r;
1053		1196
1054	#if ECB_STDFP	1197	#if ECB_STDFP
…		…
1083		1226
1084	return r;	1227	return r;
1085	}	1228	}
1086		1229
1087	/* converts an ieee single/binary32 to a float */	1230	/* converts an ieee single/binary32 to a float */
1088	ecb_function_ float ecb_binary32_to_float (uint32_t x) ecb_const;	1231	ecb_function_ ecb_const float ecb_binary32_to_float (uint32_t x);
1089	ecb_function_ float	1232	ecb_function_ ecb_const float
1090	ecb_binary32_to_float (uint32_t x)	1233	ecb_binary32_to_float (uint32_t x)
1091	{	1234	{
1092	float r;	1235	float r;
1093		1236
1094	#if ECB_STDFP	1237	#if ECB_STDFP
…		…
1104	x \|= 0x800000U;	1247	x \|= 0x800000U;
1105	else	1248	else
1106	e = 1;	1249	e = 1;
1107		1250
1108	/* we distrust ldexpf a bit and do the 2*-24 scaling by an extra multiply /	1251	/* we distrust ldexpf a bit and do the 2*-24 scaling by an extra multiply /
1109	r = ldexpf (x * (0.5f / 0x800000U), e - 126);	1252	r = ecb_ldexpf (x * (0.5f / 0x800000U), e - 126);
1110		1253
1111	r = neg ? -r : r;	1254	r = neg ? -r : r;
1112	#endif	1255	#endif
1113		1256
1114	return r;	1257	return r;
1115	}	1258	}
1116		1259
1117	/* convert a double to ieee double/binary64 */	1260	/* convert a double to ieee double/binary64 */
1118	ecb_function_ uint64_t ecb_double_to_binary64 (double x) ecb_const;	1261	ecb_function_ ecb_const uint64_t ecb_double_to_binary64 (double x);
1119	ecb_function_ uint64_t	1262	ecb_function_ ecb_const uint64_t
1120	ecb_double_to_binary64 (double x)	1263	ecb_double_to_binary64 (double x)
1121	{	1264	{
1122	uint64_t r;	1265	uint64_t r;
1123		1266
1124	#if ECB_STDFP	1267	#if ECB_STDFP
…		…
1153		1296
1154	return r;	1297	return r;
1155	}	1298	}
1156		1299
1157	/* converts an ieee double/binary64 to a double */	1300	/* converts an ieee double/binary64 to a double */
1158	ecb_function_ double ecb_binary64_to_double (uint64_t x) ecb_const;	1301	ecb_function_ ecb_const double ecb_binary64_to_double (uint64_t x);
1159	ecb_function_ double	1302	ecb_function_ ecb_const double
1160	ecb_binary64_to_double (uint64_t x)	1303	ecb_binary64_to_double (uint64_t x)
1161	{	1304	{
1162	double r;	1305	double r;
1163		1306
1164	#if ECB_STDFP	1307	#if ECB_STDFP
…		…
2085	ev_syserr ("(libev) error creating signal/async pipe");	2228	ev_syserr ("(libev) error creating signal/async pipe");
2086		2229
2087	fd_intern (fds [0]);	2230	fd_intern (fds [0]);
2088	}	2231	}
2089		2232
2090	fd_intern (fds [1]);
2091
2092	evpipe [0] = fds [0];	2233	evpipe [0] = fds [0];
2093		2234
2094	if (evpipe [1] < 0)	2235	if (evpipe [1] < 0)
2095	evpipe [1] = fds [1]; /* first call, set write fd */	2236	evpipe [1] = fds [1]; /* first call, set write fd */
2096	else	2237	else
…		…
2101	/* so must not be executed on windows */	2242	/* so must not be executed on windows */
2102		2243
2103	dup2 (fds [1], evpipe [1]);	2244	dup2 (fds [1], evpipe [1]);
2104	close (fds [1]);	2245	close (fds [1]);
2105	}	2246	}
		2247
		2248	fd_intern (evpipe [1]);
2106		2249
2107	ev_io_set (&pipe_w, evpipe [0] < 0 ? evpipe [1] : evpipe [0], EV_READ);	2250	ev_io_set (&pipe_w, evpipe [0] < 0 ? evpipe [1] : evpipe [0], EV_READ);
2108	ev_io_start (EV_A_ &pipe_w);	2251	ev_io_start (EV_A_ &pipe_w);
2109	ev_unref (EV_A); /* watcher should not keep loop alive */	2252	ev_unref (EV_A); /* watcher should not keep loop alive */
2110	}	2253	}
…		…
2229		2372
2230	void	2373	void
2231	ev_feed_signal (int signum) EV_THROW	2374	ev_feed_signal (int signum) EV_THROW
2232	{	2375	{
2233	#if EV_MULTIPLICITY	2376	#if EV_MULTIPLICITY
		2377	EV_P;
2234	ECB_MEMORY_FENCE_ACQUIRE;	2378	ECB_MEMORY_FENCE_ACQUIRE;
2235	EV_P = signals [signum - 1].loop;	2379	EV_A = signals [signum - 1].loop;
2236		2380
2237	if (!EV_A)	2381	if (!EV_A)
2238	return;	2382	return;
2239	#endif	2383	#endif
2240		2384
…		…
2493	{	2637	{
2494	return userdata;	2638	return userdata;
2495	}	2639	}
2496		2640
2497	void	2641	void
2498	ev_set_invoke_pending_cb (EV_P_ void (*invoke_pending_cb)(EV_P)) EV_THROW	2642	ev_set_invoke_pending_cb (EV_P_ ev_loop_callback invoke_pending_cb) EV_THROW
2499	{	2643	{
2500	invoke_cb = invoke_pending_cb;	2644	invoke_cb = invoke_pending_cb;
2501	}	2645	}
2502		2646
2503	void	2647	void
…		…
3893	# define EV_INOTIFY_BUFSIZE (sizeof (struct inotify_event) * 2 + NAME_MAX)	4037	# define EV_INOTIFY_BUFSIZE (sizeof (struct inotify_event) * 2 + NAME_MAX)
3894		4038
3895	static void noinline	4039	static void noinline
3896	infy_add (EV_P_ ev_stat *w)	4040	infy_add (EV_P_ ev_stat *w)
3897	{	4041	{
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);	4042	w->wd = inotify_add_watch (fs_fd, w->path,
		4043	IN_ATTRIB \| IN_DELETE_SELF \| IN_MOVE_SELF \| IN_MODIFY
		4044	\| IN_CREATE \| IN_DELETE \| IN_MOVED_FROM \| IN_MOVED_TO
		4045	\| IN_DONT_FOLLOW \| IN_MASK_ADD);
3899		4046
3900	if (w->wd >= 0)	4047	if (w->wd >= 0)
3901	{	4048	{
3902	struct statfs sfs;	4049	struct statfs sfs;
3903		4050
…		…
3907		4054
3908	if (!fs_2625)	4055	if (!fs_2625)
3909	w->timer.repeat = w->interval ? w->interval : DEF_STAT_INTERVAL;	4056	w->timer.repeat = w->interval ? w->interval : DEF_STAT_INTERVAL;
3910	else if (!statfs (w->path, &sfs)	4057	else if (!statfs (w->path, &sfs)
3911	&& (sfs.f_type == 0x1373 /* devfs */	4058	&& (sfs.f_type == 0x1373 /* devfs */
		4059	\|\| sfs.f_type == 0x4006 /* fat */
		4060	\|\| sfs.f_type == 0x4d44 /* msdos */
3912	\|\| sfs.f_type == 0xEF53 /* ext2/3 */	4061	\|\| sfs.f_type == 0xEF53 /* ext2/3 */
		4062	\|\| sfs.f_type == 0x72b6 /* jffs2 */
		4063	\|\| sfs.f_type == 0x858458f6 /* ramfs */
		4064	\|\| sfs.f_type == 0x5346544e /* ntfs */
3913	\|\| sfs.f_type == 0x3153464a /* jfs */	4065	\|\| sfs.f_type == 0x3153464a /* jfs */
		4066	\|\| sfs.f_type == 0x9123683e /* btrfs */
3914	\|\| sfs.f_type == 0x52654973 /* reiser3 */	4067	\|\| sfs.f_type == 0x52654973 /* reiser3 */
3915	\|\| sfs.f_type == 0x01021994 /* tempfs */	4068	\|\| sfs.f_type == 0x01021994 /* tmpfs */
3916	\|\| sfs.f_type == 0x58465342 /* xfs */))	4069	\|\| sfs.f_type == 0x58465342 /* xfs */))
3917	w->timer.repeat = 0.; /* filesystem is local, kernel new enough */	4070	w->timer.repeat = 0.; /* filesystem is local, kernel new enough */
3918	else	4071	else
3919	w->timer.repeat = w->interval ? w->interval : NFS_STAT_INTERVAL; /* remote, use reduced frequency */	4072	w->timer.repeat = w->interval ? w->interval : NFS_STAT_INTERVAL; /* remote, use reduced frequency */
3920	}	4073	}

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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 1.474 by root, Wed Feb 11 19:20:21 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 1.474 by root, Wed Feb 11 19:20:21 2015 UTC