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

Comparing libev/ev.c (file contents):
Revision 1.422 by root, Wed Apr 18 06:09:29 2012 UTC vs.
Revision 1.458 by root, Sun Oct 27 16:26:07 2013 UTC

…		…
201	# include <sys/wait.h>	201	# include <sys/wait.h>
202	# include <unistd.h>	202	# include <unistd.h>
203	#else	203	#else
204	# include <io.h>	204	# include <io.h>
205	# define WIN32_LEAN_AND_MEAN	205	# define WIN32_LEAN_AND_MEAN
		206	# include <winsock2.h>
206	# include <windows.h>	207	# include <windows.h>
207	# ifndef EV_SELECT_IS_WINSOCKET	208	# ifndef EV_SELECT_IS_WINSOCKET
208	# define EV_SELECT_IS_WINSOCKET 1	209	# define EV_SELECT_IS_WINSOCKET 1
209	# endif	210	# endif
210	# undef EV_AVOID_STDIO	211	# undef EV_AVOID_STDIO
…		…
356		357
357	#ifndef EV_HEAP_CACHE_AT	358	#ifndef EV_HEAP_CACHE_AT
358	# define EV_HEAP_CACHE_AT EV_FEATURE_DATA	359	# define EV_HEAP_CACHE_AT EV_FEATURE_DATA
359	#endif	360	#endif
360		361
		362	#ifdef ANDROID
		363	/* supposedly, android doesn't typedef fd_mask */
		364	# undef EV_USE_SELECT
		365	# define EV_USE_SELECT 0
		366	/* supposedly, we need to include syscall.h, not sys/syscall.h, so just disable */
		367	# undef EV_USE_CLOCK_SYSCALL
		368	# define EV_USE_CLOCK_SYSCALL 0
		369	#endif
		370
		371	/* aix's poll.h seems to cause lots of trouble */
		372	#ifdef _AIX
		373	/* AIX has a completely broken poll.h header */
		374	# undef EV_USE_POLL
		375	# define EV_USE_POLL 0
		376	#endif
		377
361	/* on linux, we can use a (slow) syscall to avoid a dependency on pthread, */	378	/* on linux, we can use a (slow) syscall to avoid a dependency on pthread, */
362	/* which makes programs even slower. might work on other unices, too. */	379	/* which makes programs even slower. might work on other unices, too. */
363	#if EV_USE_CLOCK_SYSCALL	380	#if EV_USE_CLOCK_SYSCALL
364	# include <syscall.h>	381	# include <sys/syscall.h>
365	# ifdef SYS_clock_gettime	382	# ifdef SYS_clock_gettime
366	# define clock_gettime(id, ts) syscall (SYS_clock_gettime, (id), (ts))	383	# define clock_gettime(id, ts) syscall (SYS_clock_gettime, (id), (ts))
367	# undef EV_USE_MONOTONIC	384	# undef EV_USE_MONOTONIC
368	# define EV_USE_MONOTONIC 1	385	# define EV_USE_MONOTONIC 1
369	# else	386	# else
…		…
372	# endif	389	# endif
373	#endif	390	#endif
374		391
375	/* this block fixes any misconfiguration where we know we run into trouble otherwise */	392	/* this block fixes any misconfiguration where we know we run into trouble otherwise */
376		393
377	#ifdef _AIX
378	/* AIX has a completely broken poll.h header */
379	# undef EV_USE_POLL
380	# define EV_USE_POLL 0
381	#endif
382
383	#ifndef CLOCK_MONOTONIC	394	#ifndef CLOCK_MONOTONIC
384	# undef EV_USE_MONOTONIC	395	# undef EV_USE_MONOTONIC
385	# define EV_USE_MONOTONIC 0	396	# define EV_USE_MONOTONIC 0
386	#endif	397	#endif
387		398
…		…
408	/* some very old inotify.h headers don't have IN_DONT_FOLLOW */	419	/* some very old inotify.h headers don't have IN_DONT_FOLLOW */
409	# ifndef IN_DONT_FOLLOW	420	# ifndef IN_DONT_FOLLOW
410	# undef EV_USE_INOTIFY	421	# undef EV_USE_INOTIFY
411	# define EV_USE_INOTIFY 0	422	# define EV_USE_INOTIFY 0
412	# endif	423	# endif
413	#endif
414
415	#if EV_SELECT_IS_WINSOCKET
416	# include <winsock.h>
417	#endif	424	#endif
418		425
419	#if EV_USE_EVENTFD	426	#if EV_USE_EVENTFD
420	/* our minimum requirement is glibc 2.7 which has the stub, but not the header */	427	/* our minimum requirement is glibc 2.7 which has the stub, but not the header */
421	# include <stdint.h>	428	# include <stdint.h>
…		…
507	*/	514	*/
508		515
509	#ifndef ECB_H	516	#ifndef ECB_H
510	#define ECB_H	517	#define ECB_H
511		518
		519	/* 16 bits major, 16 bits minor */
		520	#define ECB_VERSION 0x00010003
		521
512	#ifdef _WIN32	522	#ifdef _WIN32
513	typedef signed char int8_t;	523	typedef signed char int8_t;
514	typedef unsigned char uint8_t;	524	typedef unsigned char uint8_t;
515	typedef signed short int16_t;	525	typedef signed short int16_t;
516	typedef unsigned short uint16_t;	526	typedef unsigned short uint16_t;
…		…
521	typedef unsigned long long uint64_t;	531	typedef unsigned long long uint64_t;
522	#else /* _MSC_VER \|\| __BORLANDC__ */	532	#else /* _MSC_VER \|\| __BORLANDC__ */
523	typedef signed __int64 int64_t;	533	typedef signed __int64 int64_t;
524	typedef unsigned __int64 uint64_t;	534	typedef unsigned __int64 uint64_t;
525	#endif	535	#endif
		536	#ifdef _WIN64
		537	#define ECB_PTRSIZE 8
		538	typedef uint64_t uintptr_t;
		539	typedef int64_t intptr_t;
		540	#else
		541	#define ECB_PTRSIZE 4
		542	typedef uint32_t uintptr_t;
		543	typedef int32_t intptr_t;
		544	#endif
526	#else	545	#else
527	#include <inttypes.h>	546	#include <inttypes.h>
		547	#if UINTMAX_MAX > 0xffffffffU
		548	#define ECB_PTRSIZE 8
		549	#else
		550	#define ECB_PTRSIZE 4
		551	#endif
		552	#endif
		553
		554	/* work around x32 idiocy by defining proper macros */
		555	#if __x86_64 \|\| _M_AMD64
		556	#if _ILP32
		557	#define ECB_AMD64_X32 1
		558	#else
		559	#define ECB_AMD64 1
		560	#endif
528	#endif	561	#endif
529		562
530	/* many compilers define _GNUC_ to some versions but then only implement	563	/* many compilers define _GNUC_ to some versions but then only implement
531	* what their idiot authors think are the "more important" extensions,	564	* what their idiot authors think are the "more important" extensions,
532	* causing enormous grief in return for some better fake benchmark numbers.	565	* causing enormous grief in return for some better fake benchmark numbers.
…		…
540	#else	573	#else
541	#define ECB_GCC_VERSION(major,minor) (__GNUC__ > (major) \|\| (__GNUC__ == (major) && __GNUC_MINOR__ >= (minor)))	574	#define ECB_GCC_VERSION(major,minor) (__GNUC__ > (major) \|\| (__GNUC__ == (major) && __GNUC_MINOR__ >= (minor)))
542	#endif	575	#endif
543	#endif	576	#endif
544		577
		578	#define ECB_C (__STDC__+0) /* this assumes that __STDC__ is either empty or a number */
		579	#define ECB_C99 (__STDC_VERSION__ >= 199901L)
		580	#define ECB_C11 (__STDC_VERSION__ >= 201112L)
		581	#define ECB_CPP (__cplusplus+0)
		582	#define ECB_CPP11 (__cplusplus >= 201103L)
		583
		584	#if ECB_CPP
		585	#define ECB_EXTERN_C extern "C"
		586	#define ECB_EXTERN_C_BEG ECB_EXTERN_C {
		587	#define ECB_EXTERN_C_END }
		588	#else
		589	#define ECB_EXTERN_C extern
		590	#define ECB_EXTERN_C_BEG
		591	#define ECB_EXTERN_C_END
		592	#endif
		593
545	/*****************************************************************************/	594	/*****************************************************************************/
546		595
547	/* ECB_NO_THREADS - ecb is not used by multiple threads, ever */	596	/* ECB_NO_THREADS - ecb is not used by multiple threads, ever */
548	/* ECB_NO_SMP - ecb might be used in multiple threads, but only on a single cpu */	597	/* ECB_NO_SMP - ecb might be used in multiple threads, but only on a single cpu */
549		598
550	#if ECB_NO_THREADS	599	#if ECB_NO_THREADS
551	# define ECB_NO_SMP 1	600	#define ECB_NO_SMP 1
552	#endif	601	#endif
553		602
554	#if ECB_NO_THREADS \|\| ECB_NO_SMP	603	#if ECB_NO_SMP
555	#define ECB_MEMORY_FENCE do { } while (0)	604	#define ECB_MEMORY_FENCE do { } while (0)
556	#endif	605	#endif
557		606
558	#ifndef ECB_MEMORY_FENCE	607	#ifndef ECB_MEMORY_FENCE
559	#if ECB_GCC_VERSION(2,5) \|\| defined __INTEL_COMPILER \|\| (__llvm__ && __GNUC__) \|\| __SUNPRO_C >= 0x5110 \|\| __SUNPRO_CC >= 0x5110	608	#if ECB_GCC_VERSION(2,5) \|\| defined __INTEL_COMPILER \|\| (__llvm__ && __GNUC__) \|\| __SUNPRO_C >= 0x5110 \|\| __SUNPRO_CC >= 0x5110
560	#if __i386 \|\| __i386__	609	#if __i386 \|\| __i386__
561	#define ECB_MEMORY_FENCE __asm__ __volatile__ ("lock; orb $0, -1(%%esp)" : : : "memory")	610	#define ECB_MEMORY_FENCE __asm__ __volatile__ ("lock; orb $0, -1(%%esp)" : : : "memory")
562	#define ECB_MEMORY_FENCE_ACQUIRE ECB_MEMORY_FENCE /* non-lock xchg might be enough */	611	#define ECB_MEMORY_FENCE_ACQUIRE __asm__ __volatile__ ("" : : : "memory")
563	#define ECB_MEMORY_FENCE_RELEASE do { } while (0) /* unlikely to change in future cpus */	612	#define ECB_MEMORY_FENCE_RELEASE __asm__ __volatile__ ("")
564	#elif __amd64 \|\| __amd64__ \|\| __x86_64 \|\| __x86_64__	613	#elif __amd64 \|\| __amd64__ \|\| __x86_64 \|\| __x86_64__
565	#define ECB_MEMORY_FENCE __asm__ __volatile__ ("mfence" : : : "memory")	614	#define ECB_MEMORY_FENCE __asm__ __volatile__ ("mfence" : : : "memory")
566	#define ECB_MEMORY_FENCE_ACQUIRE __asm__ __volatile__ ("lfence" : : : "memory")	615	#define ECB_MEMORY_FENCE_ACQUIRE __asm__ __volatile__ ("" : : : "memory")
567	#define ECB_MEMORY_FENCE_RELEASE __asm__ __volatile__ ("sfence") /* play safe - not needed in any current cpu */	616	#define ECB_MEMORY_FENCE_RELEASE __asm__ __volatile__ ("")
568	#elif __powerpc__ \|\| __ppc__ \|\| __powerpc64__ \|\| __ppc64__	617	#elif __powerpc__ \|\| __ppc__ \|\| __powerpc64__ \|\| __ppc64__
569	#define ECB_MEMORY_FENCE __asm__ __volatile__ ("sync" : : : "memory")	618	#define ECB_MEMORY_FENCE __asm__ __volatile__ ("sync" : : : "memory")
570	#elif defined __ARM_ARCH_6__ \|\| defined __ARM_ARCH_6J__ \	619	#elif defined __ARM_ARCH_6__ \|\| defined __ARM_ARCH_6J__ \
571	\|\| defined __ARM_ARCH_6K__ \|\| defined __ARM_ARCH_6ZK__	620	\|\| defined __ARM_ARCH_6K__ \|\| defined __ARM_ARCH_6ZK__
572	#define ECB_MEMORY_FENCE __asm__ __volatile__ ("mcr p15,0,%0,c7,c10,5" : : "r" (0) : "memory")	621	#define ECB_MEMORY_FENCE __asm__ __volatile__ ("mcr p15,0,%0,c7,c10,5" : : "r" (0) : "memory")
573	#elif defined __ARM_ARCH_7__ \|\| defined __ARM_ARCH_7A__ \	622	#elif defined __ARM_ARCH_7__ \|\| defined __ARM_ARCH_7A__ \
574	\|\| defined __ARM_ARCH_7M__ \|\| defined __ARM_ARCH_7R__	623	\|\| defined __ARM_ARCH_7M__ \|\| defined __ARM_ARCH_7R__
575	#define ECB_MEMORY_FENCE __asm__ __volatile__ ("dmb" : : : "memory")	624	#define ECB_MEMORY_FENCE __asm__ __volatile__ ("dmb" : : : "memory")
576	#elif __sparc \|\| __sparc__	625	#elif __sparc \|\| __sparc__
577	#define ECB_MEMORY_FENCE __asm__ __volatile__ ("membar #LoadStore \| #LoadLoad \| #StoreStore \| #StoreLoad \| " : : : "memory")	626	#define ECB_MEMORY_FENCE __asm__ __volatile__ ("membar #LoadStore \| #LoadLoad \| #StoreStore \| #StoreLoad" : : : "memory")
578	#define ECB_MEMORY_FENCE_ACQUIRE __asm__ __volatile__ ("membar #LoadStore \| #LoadLoad" : : : "memory")	627	#define ECB_MEMORY_FENCE_ACQUIRE __asm__ __volatile__ ("membar #LoadStore \| #LoadLoad" : : : "memory")
579	#define ECB_MEMORY_FENCE_RELEASE __asm__ __volatile__ ("membar #LoadStore \| #StoreStore")	628	#define ECB_MEMORY_FENCE_RELEASE __asm__ __volatile__ ("membar #LoadStore \| #StoreStore")
580	#elif defined __s390__ \|\| defined __s390x__	629	#elif defined __s390__ \|\| defined __s390x__
581	#define ECB_MEMORY_FENCE __asm__ __volatile__ ("bcr 15,0" : : : "memory")	630	#define ECB_MEMORY_FENCE __asm__ __volatile__ ("bcr 15,0" : : : "memory")
582	#elif defined __mips__	631	#elif defined __mips__
		632	/* GNU/Linux emulates sync on mips1 architectures, so we force its use */
		633	/* anybody else who still uses mips1 is supposed to send in their version, with detection code. */
583	#define ECB_MEMORY_FENCE __asm__ __volatile__ ("sync" : : : "memory")	634	#define ECB_MEMORY_FENCE __asm__ __volatile__ (".set mips2; sync; .set mips0" : : : "memory")
584	#elif defined __alpha__	635	#elif defined __alpha__
585	#define ECB_MEMORY_FENCE __asm__ __volatile__ ("mb" : : : "memory")	636	#define ECB_MEMORY_FENCE __asm__ __volatile__ ("mb" : : : "memory")
		637	#elif defined __hppa__
		638	#define ECB_MEMORY_FENCE __asm__ __volatile__ ("" : : : "memory")
		639	#define ECB_MEMORY_FENCE_RELEASE __asm__ __volatile__ ("")
		640	#elif defined __ia64__
		641	#define ECB_MEMORY_FENCE __asm__ __volatile__ ("mf" : : : "memory")
		642	#elif defined __m68k__
		643	#define ECB_MEMORY_FENCE __asm__ __volatile__ ("" : : : "memory")
		644	#elif defined __m88k__
		645	#define ECB_MEMORY_FENCE __asm__ __volatile__ ("tb1 0,%%r0,128" : : : "memory")
		646	#elif defined __sh__
		647	#define ECB_MEMORY_FENCE __asm__ __volatile__ ("" : : : "memory")
586	#endif	648	#endif
587	#endif	649	#endif
588	#endif	650	#endif
589		651
590	#ifndef ECB_MEMORY_FENCE	652	#ifndef ECB_MEMORY_FENCE
		653	#if ECB_GCC_VERSION(4,7)
		654	/* see comment below (stdatomic.h) about the C11 memory model. */
		655	#define ECB_MEMORY_FENCE __atomic_thread_fence (__ATOMIC_SEQ_CST)
		656
		657	/* The __has_feature syntax from clang is so misdesigned that we cannot use it
		658	* without risking compile time errors with other compilers. We could
		659	* define our own ecb_clang_has_feature, but I just can't be bothered to work
		660	* around this shit time and again.
		661	* #elif defined __clang && __has_feature (cxx_atomic)
		662	* // see comment below (stdatomic.h) about the C11 memory model.
		663	* #define ECB_MEMORY_FENCE __c11_atomic_thread_fence (__ATOMIC_SEQ_CST)
		664	*/
		665
591	#if ECB_GCC_VERSION(4,4) \|\| defined __INTEL_COMPILER \|\| defined __clang__	666	#elif ECB_GCC_VERSION(4,4) \|\| defined __INTEL_COMPILER \|\| defined __clang__
592	#define ECB_MEMORY_FENCE __sync_synchronize ()	667	#define ECB_MEMORY_FENCE __sync_synchronize ()
593	/#define ECB_MEMORY_FENCE_ACQUIRE ({ char dummy = 0; __sync_lock_test_and_set (&dummy, 1); }) /
594	/#define ECB_MEMORY_FENCE_RELEASE ({ char dummy = 1; __sync_lock_release (&dummy ); }) /
595	#elif _MSC_VER >= 1400 /* VC++ 2005 */	668	#elif _MSC_VER >= 1400 /* VC++ 2005 */
596	#pragma intrinsic(_ReadBarrier,_WriteBarrier,_ReadWriteBarrier)	669	#pragma intrinsic(_ReadBarrier,_WriteBarrier,_ReadWriteBarrier)
597	#define ECB_MEMORY_FENCE _ReadWriteBarrier ()	670	#define ECB_MEMORY_FENCE _ReadWriteBarrier ()
598	#define ECB_MEMORY_FENCE_ACQUIRE _ReadWriteBarrier () /* according to msdn, _ReadBarrier is not a load fence */	671	#define ECB_MEMORY_FENCE_ACQUIRE _ReadWriteBarrier () /* according to msdn, _ReadBarrier is not a load fence */
599	#define ECB_MEMORY_FENCE_RELEASE _WriteBarrier ()	672	#define ECB_MEMORY_FENCE_RELEASE _WriteBarrier ()
…		…
609	#define ECB_MEMORY_FENCE __sync ()	682	#define ECB_MEMORY_FENCE __sync ()
610	#endif	683	#endif
611	#endif	684	#endif
612		685
613	#ifndef ECB_MEMORY_FENCE	686	#ifndef ECB_MEMORY_FENCE
		687	#if ECB_C11 && !defined __STDC_NO_ATOMICS__
		688	/* we assume that these memory fences work on all variables/all memory accesses, */
		689	/* not just C11 atomics and atomic accesses */
		690	#include <stdatomic.h>
		691	/* Unfortunately, neither gcc 4.7 nor clang 3.1 generate any instructions for */
		692	/* any fence other than seq_cst, which isn't very efficient for us. */
		693	/* Why that is, we don't know - either the C11 memory model is quite useless */
		694	/* for most usages, or gcc and clang have a bug */
		695	/* I currently lean towards the latter, and inefficiently implement */
		696	/* all three of ecb's fences as a seq_cst fence */
		697	#define ECB_MEMORY_FENCE atomic_thread_fence (memory_order_seq_cst)
		698	#endif
		699	#endif
		700
		701	#ifndef ECB_MEMORY_FENCE
614	#if !ECB_AVOID_PTHREADS	702	#if !ECB_AVOID_PTHREADS
615	/*	703	/*
616	* if you get undefined symbol references to pthread_mutex_lock,	704	* if you get undefined symbol references to pthread_mutex_lock,
617	* or failure to find pthread.h, then you should implement	705	* or failure to find pthread.h, then you should implement
618	* the ECB_MEMORY_FENCE operations for your cpu/compiler	706	* the ECB_MEMORY_FENCE operations for your cpu/compiler
…		…
636	#define ECB_MEMORY_FENCE_RELEASE ECB_MEMORY_FENCE	724	#define ECB_MEMORY_FENCE_RELEASE ECB_MEMORY_FENCE
637	#endif	725	#endif
638		726
639	/*****************************************************************************/	727	/*****************************************************************************/
640		728
641	#define ECB_C99 (__STDC_VERSION__ >= 199901L)
642
643	#if __cplusplus	729	#if __cplusplus
644	#define ecb_inline static inline	730	#define ecb_inline static inline
645	#elif ECB_GCC_VERSION(2,5)	731	#elif ECB_GCC_VERSION(2,5)
646	#define ecb_inline static __inline__	732	#define ecb_inline static __inline__
647	#elif ECB_C99	733	#elif ECB_C99
…		…
685	#elif ECB_GCC_VERSION(3,0)	771	#elif ECB_GCC_VERSION(3,0)
686	#define ecb_decltype(x) __typeof(x)	772	#define ecb_decltype(x) __typeof(x)
687	#endif	773	#endif
688		774
689	#define ecb_noinline ecb_attribute ((__noinline__))	775	#define ecb_noinline ecb_attribute ((__noinline__))
690	#define ecb_noreturn ecb_attribute ((__noreturn__))
691	#define ecb_unused ecb_attribute ((__unused__))	776	#define ecb_unused ecb_attribute ((__unused__))
692	#define ecb_const ecb_attribute ((__const__))	777	#define ecb_const ecb_attribute ((__const__))
693	#define ecb_pure ecb_attribute ((__pure__))	778	#define ecb_pure ecb_attribute ((__pure__))
		779
		780	#if ECB_C11
		781	#define ecb_noreturn _Noreturn
		782	#else
		783	#define ecb_noreturn ecb_attribute ((__noreturn__))
		784	#endif
694		785
695	#if ECB_GCC_VERSION(4,3)	786	#if ECB_GCC_VERSION(4,3)
696	#define ecb_artificial ecb_attribute ((__artificial__))	787	#define ecb_artificial ecb_attribute ((__artificial__))
697	#define ecb_hot ecb_attribute ((__hot__))	788	#define ecb_hot ecb_attribute ((__hot__))
698	#define ecb_cold ecb_attribute ((__cold__))	789	#define ecb_cold ecb_attribute ((__cold__))
…		…
789		880
790	return r + ecb_ld32 (x);	881	return r + ecb_ld32 (x);
791	}	882	}
792	#endif	883	#endif
793		884
		885	ecb_function_ ecb_bool ecb_is_pot32 (uint32_t x) ecb_const;
		886	ecb_function_ ecb_bool ecb_is_pot32 (uint32_t x) { return !(x & (x - 1)); }
		887	ecb_function_ ecb_bool ecb_is_pot64 (uint64_t x) ecb_const;
		888	ecb_function_ ecb_bool ecb_is_pot64 (uint64_t x) { return !(x & (x - 1)); }
		889
794	ecb_function_ uint8_t ecb_bitrev8 (uint8_t x) ecb_const;	890	ecb_function_ uint8_t ecb_bitrev8 (uint8_t x) ecb_const;
795	ecb_function_ uint8_t ecb_bitrev8 (uint8_t x)	891	ecb_function_ uint8_t ecb_bitrev8 (uint8_t x)
796	{	892	{
797	return ( (x * 0x0802U & 0x22110U)	893	return ( (x * 0x0802U & 0x22110U)
798	\| (x * 0x8020U & 0x88440U)) * 0x10101U >> 16;	894	\| (x * 0x8020U & 0x88440U)) * 0x10101U >> 16;
…		…
882	ecb_inline void ecb_unreachable (void) ecb_noreturn;	978	ecb_inline void ecb_unreachable (void) ecb_noreturn;
883	ecb_inline void ecb_unreachable (void) { }	979	ecb_inline void ecb_unreachable (void) { }
884	#endif	980	#endif
885		981
886	/* try to tell the compiler that some condition is definitely true */	982	/* try to tell the compiler that some condition is definitely true */
887	#define ecb_assume(cond) do { if (!(cond)) ecb_unreachable (); } while (0)	983	#define ecb_assume(cond) if (!(cond)) ecb_unreachable (); else 0
888		984
889	ecb_inline unsigned char ecb_byteorder_helper (void) ecb_const;	985	ecb_inline unsigned char ecb_byteorder_helper (void) ecb_const;
890	ecb_inline unsigned char	986	ecb_inline unsigned char
891	ecb_byteorder_helper (void)	987	ecb_byteorder_helper (void)
892	{	988	{
893	const uint32_t u = 0x11223344;	989	/* the union code still generates code under pressure in gcc, */
894	return (unsigned char )&u;	990	/* but less than using pointers, and always seems to */
		991	/* successfully return a constant. */
		992	/* the reason why we have this horrible preprocessor mess */
		993	/* is to avoid it in all cases, at least on common architectures */
		994	/* or when using a recent enough gcc version (>= 4.6) */
		995	#if __i386 \|\| __i386__ \|\| _M_X86 \|\| __amd64 \|\| __amd64__ \|\| _M_X64
		996	return 0x44;
		997	#elif __BYTE_ORDER__ && __BYTE_ORDER__ == __ORDER_LITTLE_ENDIAN__
		998	return 0x44;
		999	#elif __BYTE_ORDER__ && __BYTE_ORDER__ == __ORDER_BIG_ENDIAN__
		1000	return 0x11;
		1001	#else
		1002	union
		1003	{
		1004	uint32_t i;
		1005	uint8_t c;
		1006	} u = { 0x11223344 };
		1007	return u.c;
		1008	#endif
895	}	1009	}
896		1010
897	ecb_inline ecb_bool ecb_big_endian (void) ecb_const;	1011	ecb_inline ecb_bool ecb_big_endian (void) ecb_const;
898	ecb_inline ecb_bool ecb_big_endian (void) { return ecb_byteorder_helper () == 0x11; }	1012	ecb_inline ecb_bool ecb_big_endian (void) { return ecb_byteorder_helper () == 0x11; }
899	ecb_inline ecb_bool ecb_little_endian (void) ecb_const;	1013	ecb_inline ecb_bool ecb_little_endian (void) ecb_const;
…		…
930	}	1044	}
931	#else	1045	#else
932	#define ecb_array_length(name) (sizeof (name) / sizeof (name [0]))	1046	#define ecb_array_length(name) (sizeof (name) / sizeof (name [0]))
933	#endif	1047	#endif
934		1048
		1049	/*******************************************************************************/
		1050	/* floating point stuff, can be disabled by defining ECB_NO_LIBM */
		1051
		1052	/* basically, everything uses "ieee pure-endian" floating point numbers */
		1053	/* the only noteworthy exception is ancient armle, which uses order 43218765 */
		1054	#if 0 \
		1055	\|\| __i386 \|\| __i386__ \
		1056	\|\| __amd64 \|\| __amd64__ \|\| __x86_64 \|\| __x86_64__ \
		1057	\|\| __powerpc__ \|\| __ppc__ \|\| __powerpc64__ \|\| __ppc64__ \
		1058	\|\| defined __arm__ && defined __ARM_EABI__ \
		1059	\|\| defined __s390__ \|\| defined __s390x__ \
		1060	\|\| defined __mips__ \
		1061	\|\| defined __alpha__ \
		1062	\|\| defined __hppa__ \
		1063	\|\| defined __ia64__ \
		1064	\|\| defined __m68k__ \
		1065	\|\| defined __m88k__ \
		1066	\|\| defined __sh__ \
		1067	\|\| defined _M_IX86 \|\| defined _M_AMD64 \|\| defined _M_IA64
		1068	#define ECB_STDFP 1
		1069	#include <string.h> /* for memcpy */
		1070	#else
		1071	#define ECB_STDFP 0
		1072	#endif
		1073
		1074	#ifndef ECB_NO_LIBM
		1075
		1076	#include <math.h> /* for frexp, ldexp, INFINITY, NAN */
		1077
		1078	#ifdef NEN
		1079	#define ECB_NAN NAN
		1080	#else
		1081	#define ECB_NAN INFINITY
		1082	#endif
		1083
		1084	/* converts an ieee half/binary16 to a float */
		1085	ecb_function_ float ecb_binary16_to_float (uint16_t x) ecb_const;
		1086	ecb_function_ float
		1087	ecb_binary16_to_float (uint16_t x)
		1088	{
		1089	int e = (x >> 10) & 0x1f;
		1090	int m = x & 0x3ff;
		1091	float r;
		1092
		1093	if (!e ) r = ldexpf (m , -24);
		1094	else if (e != 31) r = ldexpf (m + 0x400, e - 25);
		1095	else if (m ) r = ECB_NAN;
		1096	else r = INFINITY;
		1097
		1098	return x & 0x8000 ? -r : r;
		1099	}
		1100
		1101	/* convert a float to ieee single/binary32 */
		1102	ecb_function_ uint32_t ecb_float_to_binary32 (float x) ecb_const;
		1103	ecb_function_ uint32_t
		1104	ecb_float_to_binary32 (float x)
		1105	{
		1106	uint32_t r;
		1107
		1108	#if ECB_STDFP
		1109	memcpy (&r, &x, 4);
		1110	#else
		1111	/* slow emulation, works for anything but -0 */
		1112	uint32_t m;
		1113	int e;
		1114
		1115	if (x == 0e0f ) return 0x00000000U;
		1116	if (x > +3.40282346638528860e+38f) return 0x7f800000U;
		1117	if (x < -3.40282346638528860e+38f) return 0xff800000U;
		1118	if (x != x ) return 0x7fbfffffU;
		1119
		1120	m = frexpf (x, &e) * 0x1000000U;
		1121
		1122	r = m & 0x80000000U;
		1123
		1124	if (r)
		1125	m = -m;
		1126
		1127	if (e <= -126)
		1128	{
		1129	m &= 0xffffffU;
		1130	m >>= (-125 - e);
		1131	e = -126;
		1132	}
		1133
		1134	r \|= (e + 126) << 23;
		1135	r \|= m & 0x7fffffU;
		1136	#endif
		1137
		1138	return r;
		1139	}
		1140
		1141	/* converts an ieee single/binary32 to a float */
		1142	ecb_function_ float ecb_binary32_to_float (uint32_t x) ecb_const;
		1143	ecb_function_ float
		1144	ecb_binary32_to_float (uint32_t x)
		1145	{
		1146	float r;
		1147
		1148	#if ECB_STDFP
		1149	memcpy (&r, &x, 4);
		1150	#else
		1151	/* emulation, only works for normals and subnormals and +0 */
		1152	int neg = x >> 31;
		1153	int e = (x >> 23) & 0xffU;
		1154
		1155	x &= 0x7fffffU;
		1156
		1157	if (e)
		1158	x \|= 0x800000U;
		1159	else
		1160	e = 1;
		1161
		1162	/* we distrust ldexpf a bit and do the 2*-24 scaling by an extra multiply /
		1163	r = ldexpf (x * (0.5f / 0x800000U), e - 126);
		1164
		1165	r = neg ? -r : r;
		1166	#endif
		1167
		1168	return r;
		1169	}
		1170
		1171	/* convert a double to ieee double/binary64 */
		1172	ecb_function_ uint64_t ecb_double_to_binary64 (double x) ecb_const;
		1173	ecb_function_ uint64_t
		1174	ecb_double_to_binary64 (double x)
		1175	{
		1176	uint64_t r;
		1177
		1178	#if ECB_STDFP
		1179	memcpy (&r, &x, 8);
		1180	#else
		1181	/* slow emulation, works for anything but -0 */
		1182	uint64_t m;
		1183	int e;
		1184
		1185	if (x == 0e0 ) return 0x0000000000000000U;
		1186	if (x > +1.79769313486231470e+308) return 0x7ff0000000000000U;
		1187	if (x < -1.79769313486231470e+308) return 0xfff0000000000000U;
		1188	if (x != x ) return 0X7ff7ffffffffffffU;
		1189
		1190	m = frexp (x, &e) * 0x20000000000000U;
		1191
		1192	r = m & 0x8000000000000000;;
		1193
		1194	if (r)
		1195	m = -m;
		1196
		1197	if (e <= -1022)
		1198	{
		1199	m &= 0x1fffffffffffffU;
		1200	m >>= (-1021 - e);
		1201	e = -1022;
		1202	}
		1203
		1204	r \|= ((uint64_t)(e + 1022)) << 52;
		1205	r \|= m & 0xfffffffffffffU;
		1206	#endif
		1207
		1208	return r;
		1209	}
		1210
		1211	/* converts an ieee double/binary64 to a double */
		1212	ecb_function_ double ecb_binary64_to_double (uint64_t x) ecb_const;
		1213	ecb_function_ double
		1214	ecb_binary64_to_double (uint64_t x)
		1215	{
		1216	double r;
		1217
		1218	#if ECB_STDFP
		1219	memcpy (&r, &x, 8);
		1220	#else
		1221	/* emulation, only works for normals and subnormals and +0 */
		1222	int neg = x >> 63;
		1223	int e = (x >> 52) & 0x7ffU;
		1224
		1225	x &= 0xfffffffffffffU;
		1226
		1227	if (e)
		1228	x \|= 0x10000000000000U;
		1229	else
		1230	e = 1;
		1231
		1232	/* we distrust ldexp a bit and do the 2*-53 scaling by an extra multiply /
		1233	r = ldexp (x * (0.5 / 0x10000000000000U), e - 1022);
		1234
		1235	r = neg ? -r : r;
		1236	#endif
		1237
		1238	return r;
		1239	}
		1240
		1241	#endif
		1242
935	#endif	1243	#endif
936		1244
937	/* ECB.H END */	1245	/* ECB.H END */
938		1246
939	#if ECB_MEMORY_FENCE_NEEDS_PTHREADS	1247	#if ECB_MEMORY_FENCE_NEEDS_PTHREADS
…		…
1108	#endif	1416	#endif
1109		1417
1110	static void (syserr_cb)(const char msg) EV_THROW;	1418	static void (syserr_cb)(const char msg) EV_THROW;
1111		1419
1112	void ecb_cold	1420	void ecb_cold
1113	ev_set_syserr_cb (void (cb)(const char msg)) EV_THROW	1421	ev_set_syserr_cb (void (cb)(const char msg) EV_THROW) EV_THROW
1114	{	1422	{
1115	syserr_cb = cb;	1423	syserr_cb = cb;
1116	}	1424	}
1117		1425
1118	static void noinline ecb_cold	1426	static void noinline ecb_cold
…		…
1136	abort ();	1444	abort ();
1137	}	1445	}
1138	}	1446	}
1139		1447
1140	static void *	1448	static void *
1141	ev_realloc_emul (void *ptr, long size)	1449	ev_realloc_emul (void *ptr, long size) EV_THROW
1142	{	1450	{
1143	#if __GLIBC__
1144	return realloc (ptr, size);
1145	#else
1146	/* some systems, notably openbsd and darwin, fail to properly	1451	/* some systems, notably openbsd and darwin, fail to properly
1147	* implement realloc (x, 0) (as required by both ansi c-89 and	1452	* implement realloc (x, 0) (as required by both ansi c-89 and
1148	* the single unix specification, so work around them here.	1453	* the single unix specification, so work around them here.
		1454	* recently, also (at least) fedora and debian started breaking it,
		1455	* despite documenting it otherwise.
1149	*/	1456	*/
1150		1457
1151	if (size)	1458	if (size)
1152	return realloc (ptr, size);	1459	return realloc (ptr, size);
1153		1460
1154	free (ptr);	1461	free (ptr);
1155	return 0;	1462	return 0;
1156	#endif
1157	}	1463	}
1158		1464
1159	static void (alloc)(void *ptr, long size) EV_THROW = ev_realloc_emul;	1465	static void (alloc)(void *ptr, long size) EV_THROW = ev_realloc_emul;
1160		1466
1161	void ecb_cold	1467	void ecb_cold
1162	ev_set_allocator (void (cb)(void *ptr, long size)) EV_THROW	1468	ev_set_allocator (void (cb)(void *ptr, long size) EV_THROW) EV_THROW
1163	{	1469	{
1164	alloc = cb;	1470	alloc = cb;
1165	}	1471	}
1166		1472
1167	inline_speed void *	1473	inline_speed void *
…		…
1430	w_->pending = ++pendingcnt [pri];	1736	w_->pending = ++pendingcnt [pri];
1431	array_needsize (ANPENDING, pendings [pri], pendingmax [pri], w_->pending, EMPTY2);	1737	array_needsize (ANPENDING, pendings [pri], pendingmax [pri], w_->pending, EMPTY2);
1432	pendings [pri][w_->pending - 1].w = w_;	1738	pendings [pri][w_->pending - 1].w = w_;
1433	pendings [pri][w_->pending - 1].events = revents;	1739	pendings [pri][w_->pending - 1].events = revents;
1434	}	1740	}
		1741
		1742	pendingpri = NUMPRI - 1;
1435	}	1743	}
1436		1744
1437	inline_speed void	1745	inline_speed void
1438	feed_reverse (EV_P_ W w)	1746	feed_reverse (EV_P_ W w)
1439	{	1747	{
…		…
1814	static void noinline ecb_cold	2122	static void noinline ecb_cold
1815	evpipe_init (EV_P)	2123	evpipe_init (EV_P)
1816	{	2124	{
1817	if (!ev_is_active (&pipe_w))	2125	if (!ev_is_active (&pipe_w))
1818	{	2126	{
		2127	int fds [2];
		2128
1819	# if EV_USE_EVENTFD	2129	# if EV_USE_EVENTFD
		2130	fds [0] = -1;
1820	evfd = eventfd (0, EFD_NONBLOCK \| EFD_CLOEXEC);	2131	fds [1] = eventfd (0, EFD_NONBLOCK \| EFD_CLOEXEC);
1821	if (evfd < 0 && errno == EINVAL)	2132	if (fds [1] < 0 && errno == EINVAL)
1822	evfd = eventfd (0, 0);	2133	fds [1] = eventfd (0, 0);
1823		2134
1824	if (evfd >= 0)	2135	if (fds [1] < 0)
		2136	# endif
1825	{	2137	{
		2138	while (pipe (fds))
		2139	ev_syserr ("(libev) error creating signal/async pipe");
		2140
		2141	fd_intern (fds [0]);
		2142	}
		2143
1826	evpipe [0] = -1;	2144	evpipe [0] = fds [0];
1827	fd_intern (evfd); /* doing it twice doesn't hurt */	2145
1828	ev_io_set (&pipe_w, evfd, EV_READ);	2146	if (evpipe [1] < 0)
		2147	evpipe [1] = fds [1]; /* first call, set write fd */
		2148	else
		2149	{
		2150	/* on subsequent calls, do not change evpipe [1] */
		2151	/* so that evpipe_write can always rely on its value. */
		2152	/* this branch does not do anything sensible on windows, */
		2153	/* so must not be executed on windows */
		2154
		2155	dup2 (fds [1], evpipe [1]);
		2156	close (fds [1]);
		2157	}
		2158
		2159	fd_intern (evpipe [1]);
		2160
		2161	ev_io_set (&pipe_w, evpipe [0] < 0 ? evpipe [1] : evpipe [0], EV_READ);
		2162	ev_io_start (EV_A_ &pipe_w);
		2163	ev_unref (EV_A); /* watcher should not keep loop alive */
		2164	}
		2165	}
		2166
		2167	inline_speed void
		2168	evpipe_write (EV_P_ EV_ATOMIC_T *flag)
		2169	{
		2170	ECB_MEMORY_FENCE; /* push out the write before this function was called, acquire flag */
		2171
		2172	if (expect_true (*flag))
		2173	return;
		2174
		2175	*flag = 1;
		2176	ECB_MEMORY_FENCE_RELEASE; /* make sure flag is visible before the wakeup */
		2177
		2178	pipe_write_skipped = 1;
		2179
		2180	ECB_MEMORY_FENCE; /* make sure pipe_write_skipped is visible before we check pipe_write_wanted */
		2181
		2182	if (pipe_write_wanted)
		2183	{
		2184	int old_errno;
		2185
		2186	pipe_write_skipped = 0;
		2187	ECB_MEMORY_FENCE_RELEASE;
		2188
		2189	old_errno = errno; /* save errno because write will clobber it */
		2190
		2191	#if EV_USE_EVENTFD
		2192	if (evpipe [0] < 0)
		2193	{
		2194	uint64_t counter = 1;
		2195	write (evpipe [1], &counter, sizeof (uint64_t));
1829	}	2196	}
1830	else	2197	else
1831	# endif	2198	#endif
1832	{	2199	{
1833	while (pipe (evpipe))	2200	#ifdef _WIN32
1834	ev_syserr ("(libev) error creating signal/async pipe");	2201	WSABUF buf;
1835		2202	DWORD sent;
1836	fd_intern (evpipe [0]);	2203	buf.buf = &buf;
1837	fd_intern (evpipe [1]);	2204	buf.len = 1;
1838	ev_io_set (&pipe_w, evpipe [0], EV_READ);	2205	WSASend (EV_FD_TO_WIN32_HANDLE (evpipe [1]), &buf, 1, &sent, 0, 0, 0);
1839	}	2206	#else
1840
1841	ev_io_start (EV_A_ &pipe_w);
1842	ev_unref (EV_A); /* watcher should not keep loop alive */
1843	}
1844	}
1845
1846	inline_speed void
1847	evpipe_write (EV_P_ EV_ATOMIC_T *flag)
1848	{
1849	if (expect_true (*flag))
1850	return;
1851
1852	*flag = 1;
1853
1854	ECB_MEMORY_FENCE_RELEASE; /* make sure flag is visible before the wakeup */
1855
1856	pipe_write_skipped = 1;
1857
1858	ECB_MEMORY_FENCE; /* make sure pipe_write_skipped is visible before we check pipe_write_wanted */
1859
1860	if (pipe_write_wanted)
1861	{
1862	int old_errno;
1863
1864	pipe_write_skipped = 0; /* just an optimisation, no fence needed */
1865
1866	old_errno = errno; /* save errno because write will clobber it */
1867
1868	#if EV_USE_EVENTFD
1869	if (evfd >= 0)
1870	{
1871	uint64_t counter = 1;
1872	write (evfd, &counter, sizeof (uint64_t));
1873	}
1874	else
1875	#endif
1876	{
1877	/* win32 people keep sending patches that change this write() to send() */
1878	/* and then run away. but send() is wrong, it wants a socket handle on win32 */
1879	/* so when you think this write should be a send instead, please find out */
1880	/* where your send() is from - it's definitely not the microsoft send, and */
1881	/* tell me. thank you. */
1882	/* it might be that your problem is that your environment needs EV_USE_WSASOCKET */
1883	/* check the ev documentation on how to use this flag */
1884	write (evpipe [1], &(evpipe [1]), 1);	2207	write (evpipe [1], &(evpipe [1]), 1);
		2208	#endif
1885	}	2209	}
1886		2210
1887	errno = old_errno;	2211	errno = old_errno;
1888	}	2212	}
1889	}	2213	}
…		…
1896	int i;	2220	int i;
1897		2221
1898	if (revents & EV_READ)	2222	if (revents & EV_READ)
1899	{	2223	{
1900	#if EV_USE_EVENTFD	2224	#if EV_USE_EVENTFD
1901	if (evfd >= 0)	2225	if (evpipe [0] < 0)
1902	{	2226	{
1903	uint64_t counter;	2227	uint64_t counter;
1904	read (evfd, &counter, sizeof (uint64_t));	2228	read (evpipe [1], &counter, sizeof (uint64_t));
1905	}	2229	}
1906	else	2230	else
1907	#endif	2231	#endif
1908	{	2232	{
1909	char dummy;	2233	char dummy[4];
1910	/* see discussion in evpipe_write when you think this read should be recv in win32 */	2234	#ifdef _WIN32
		2235	WSABUF buf;
		2236	DWORD recvd;
		2237	DWORD flags = 0;
		2238	buf.buf = dummy;
		2239	buf.len = sizeof (dummy);
		2240	WSARecv (EV_FD_TO_WIN32_HANDLE (evpipe [0]), &buf, 1, &recvd, &flags, 0, 0);
		2241	#else
1911	read (evpipe [0], &dummy, 1);	2242	read (evpipe [0], &dummy, sizeof (dummy));
		2243	#endif
1912	}	2244	}
1913	}	2245	}
1914		2246
1915	pipe_write_skipped = 0;	2247	pipe_write_skipped = 0;
		2248
		2249	ECB_MEMORY_FENCE; /* push out skipped, acquire flags */
1916		2250
1917	#if EV_SIGNAL_ENABLE	2251	#if EV_SIGNAL_ENABLE
1918	if (sig_pending)	2252	if (sig_pending)
1919	{	2253	{
1920	sig_pending = 0;	2254	sig_pending = 0;
		2255
		2256	ECB_MEMORY_FENCE;
1921		2257
1922	for (i = EV_NSIG - 1; i--; )	2258	for (i = EV_NSIG - 1; i--; )
1923	if (expect_false (signals [i].pending))	2259	if (expect_false (signals [i].pending))
1924	ev_feed_signal_event (EV_A_ i + 1);	2260	ev_feed_signal_event (EV_A_ i + 1);
1925	}	2261	}
…		…
1927		2263
1928	#if EV_ASYNC_ENABLE	2264	#if EV_ASYNC_ENABLE
1929	if (async_pending)	2265	if (async_pending)
1930	{	2266	{
1931	async_pending = 0;	2267	async_pending = 0;
		2268
		2269	ECB_MEMORY_FENCE;
1932		2270
1933	for (i = asynccnt; i--; )	2271	for (i = asynccnt; i--; )
1934	if (asyncs [i]->sent)	2272	if (asyncs [i]->sent)
1935	{	2273	{
1936	asyncs [i]->sent = 0;	2274	asyncs [i]->sent = 0;
		2275	ECB_MEMORY_FENCE_RELEASE;
1937	ev_feed_event (EV_A_ asyncs [i], EV_ASYNC);	2276	ev_feed_event (EV_A_ asyncs [i], EV_ASYNC);
1938	}	2277	}
1939	}	2278	}
1940	#endif	2279	#endif
1941	}	2280	}
…		…
1944		2283
1945	void	2284	void
1946	ev_feed_signal (int signum) EV_THROW	2285	ev_feed_signal (int signum) EV_THROW
1947	{	2286	{
1948	#if EV_MULTIPLICITY	2287	#if EV_MULTIPLICITY
		2288	EV_P;
		2289	ECB_MEMORY_FENCE_ACQUIRE;
1949	EV_P = signals [signum - 1].loop;	2290	EV_A = signals [signum - 1].loop;
1950		2291
1951	if (!EV_A)	2292	if (!EV_A)
1952	return;	2293	return;
1953	#endif	2294	#endif
1954		2295
1955	if (!ev_active (&pipe_w))
1956	return;
1957
1958	signals [signum - 1].pending = 1;	2296	signals [signum - 1].pending = 1;
1959	evpipe_write (EV_A_ &sig_pending);	2297	evpipe_write (EV_A_ &sig_pending);
1960	}	2298	}
1961		2299
1962	static void	2300	static void
…		…
1972	void noinline	2310	void noinline
1973	ev_feed_signal_event (EV_P_ int signum) EV_THROW	2311	ev_feed_signal_event (EV_P_ int signum) EV_THROW
1974	{	2312	{
1975	WL w;	2313	WL w;
1976		2314
1977	if (expect_false (signum <= 0 \|\| signum > EV_NSIG))	2315	if (expect_false (signum <= 0 \|\| signum >= EV_NSIG))
1978	return;	2316	return;
1979		2317
1980	--signum;	2318	--signum;
1981		2319
1982	#if EV_MULTIPLICITY	2320	#if EV_MULTIPLICITY
…		…
1986	if (expect_false (signals [signum].loop != EV_A))	2324	if (expect_false (signals [signum].loop != EV_A))
1987	return;	2325	return;
1988	#endif	2326	#endif
1989		2327
1990	signals [signum].pending = 0;	2328	signals [signum].pending = 0;
		2329	ECB_MEMORY_FENCE_RELEASE;
1991		2330
1992	for (w = signals [signum].head; w; w = w->next)	2331	for (w = signals [signum].head; w; w = w->next)
1993	ev_feed_event (EV_A_ (W)w, EV_SIGNAL);	2332	ev_feed_event (EV_A_ (W)w, EV_SIGNAL);
1994	}	2333	}
1995		2334
…		…
2279	#if EV_ASYNC_ENABLE	2618	#if EV_ASYNC_ENABLE
2280	async_pending = 0;	2619	async_pending = 0;
2281	#endif	2620	#endif
2282	pipe_write_skipped = 0;	2621	pipe_write_skipped = 0;
2283	pipe_write_wanted = 0;	2622	pipe_write_wanted = 0;
		2623	evpipe [0] = -1;
		2624	evpipe [1] = -1;
2284	#if EV_USE_INOTIFY	2625	#if EV_USE_INOTIFY
2285	fs_fd = flags & EVFLAG_NOINOTIFY ? -1 : -2;	2626	fs_fd = flags & EVFLAG_NOINOTIFY ? -1 : -2;
2286	#endif	2627	#endif
2287	#if EV_USE_SIGNALFD	2628	#if EV_USE_SIGNALFD
2288	sigfd = flags & EVFLAG_SIGNALFD ? -2 : -1;	2629	sigfd = flags & EVFLAG_SIGNALFD ? -2 : -1;
…		…
2339	EV_INVOKE_PENDING;	2680	EV_INVOKE_PENDING;
2340	}	2681	}
2341	#endif	2682	#endif
2342		2683
2343	#if EV_CHILD_ENABLE	2684	#if EV_CHILD_ENABLE
2344	if (ev_is_active (&childev))	2685	if (ev_is_default_loop (EV_A) && ev_is_active (&childev))
2345	{	2686	{
2346	ev_ref (EV_A); /* child watcher */	2687	ev_ref (EV_A); /* child watcher */
2347	ev_signal_stop (EV_A_ &childev);	2688	ev_signal_stop (EV_A_ &childev);
2348	}	2689	}
2349	#endif	2690	#endif
…		…
2351	if (ev_is_active (&pipe_w))	2692	if (ev_is_active (&pipe_w))
2352	{	2693	{
2353	/ev_ref (EV_A);/	2694	/ev_ref (EV_A);/
2354	/ev_io_stop (EV_A_ &pipe_w);/	2695	/ev_io_stop (EV_A_ &pipe_w);/
2355		2696
2356	#if EV_USE_EVENTFD
2357	if (evfd >= 0)
2358	close (evfd);
2359	#endif
2360
2361	if (evpipe [0] >= 0)
2362	{
2363	EV_WIN32_CLOSE_FD (evpipe [0]);	2697	if (evpipe [0] >= 0) EV_WIN32_CLOSE_FD (evpipe [0]);
2364	EV_WIN32_CLOSE_FD (evpipe [1]);	2698	if (evpipe [1] >= 0) EV_WIN32_CLOSE_FD (evpipe [1]);
2365	}
2366	}	2699	}
2367		2700
2368	#if EV_USE_SIGNALFD	2701	#if EV_USE_SIGNALFD
2369	if (ev_is_active (&sigfd_w))	2702	if (ev_is_active (&sigfd_w))
2370	close (sigfd);	2703	close (sigfd);
…		…
2456	#endif	2789	#endif
2457	#if EV_USE_INOTIFY	2790	#if EV_USE_INOTIFY
2458	infy_fork (EV_A);	2791	infy_fork (EV_A);
2459	#endif	2792	#endif
2460		2793
		2794	#if EV_SIGNAL_ENABLE \|\| EV_ASYNC_ENABLE
2461	if (ev_is_active (&pipe_w))	2795	if (ev_is_active (&pipe_w))
2462	{	2796	{
2463	/* pipe_write_wanted must be false now, so modifying fd vars should be safe */	2797	/* pipe_write_wanted must be false now, so modifying fd vars should be safe */
2464		2798
2465	ev_ref (EV_A);	2799	ev_ref (EV_A);
2466	ev_io_stop (EV_A_ &pipe_w);	2800	ev_io_stop (EV_A_ &pipe_w);
2467		2801
2468	#if EV_USE_EVENTFD
2469	if (evfd >= 0)
2470	close (evfd);
2471	#endif
2472
2473	if (evpipe [0] >= 0)	2802	if (evpipe [0] >= 0)
2474	{
2475	EV_WIN32_CLOSE_FD (evpipe [0]);	2803	EV_WIN32_CLOSE_FD (evpipe [0]);
2476	EV_WIN32_CLOSE_FD (evpipe [1]);
2477	}
2478		2804
2479	#if EV_SIGNAL_ENABLE \|\| EV_ASYNC_ENABLE
2480	evpipe_init (EV_A);	2805	evpipe_init (EV_A);
2481	/* now iterate over everything, in case we missed something */	2806	/* iterate over everything, in case we missed something before */
2482	pipecb (EV_A_ &pipe_w, EV_READ);	2807	ev_feed_event (EV_A_ &pipe_w, EV_CUSTOM);
2483	#endif
2484	}	2808	}
		2809	#endif
2485		2810
2486	postfork = 0;	2811	postfork = 0;
2487	}	2812	}
2488		2813
2489	#if EV_MULTIPLICITY	2814	#if EV_MULTIPLICITY
…		…
2545	void ecb_cold	2870	void ecb_cold
2546	ev_verify (EV_P) EV_THROW	2871	ev_verify (EV_P) EV_THROW
2547	{	2872	{
2548	#if EV_VERIFY	2873	#if EV_VERIFY
2549	int i;	2874	int i;
2550	WL w;	2875	WL w, w2;
2551		2876
2552	assert (activecnt >= -1);	2877	assert (activecnt >= -1);
2553		2878
2554	assert (fdchangemax >= fdchangecnt);	2879	assert (fdchangemax >= fdchangecnt);
2555	for (i = 0; i < fdchangecnt; ++i)	2880	for (i = 0; i < fdchangecnt; ++i)
2556	assert (("libev: negative fd in fdchanges", fdchanges [i] >= 0));	2881	assert (("libev: negative fd in fdchanges", fdchanges [i] >= 0));
2557		2882
2558	assert (anfdmax >= 0);	2883	assert (anfdmax >= 0);
2559	for (i = 0; i < anfdmax; ++i)	2884	for (i = 0; i < anfdmax; ++i)
		2885	{
		2886	int j = 0;
		2887
2560	for (w = anfds [i].head; w; w = w->next)	2888	for (w = w2 = anfds [i].head; w; w = w->next)
2561	{	2889	{
2562	verify_watcher (EV_A_ (W)w);	2890	verify_watcher (EV_A_ (W)w);
		2891
		2892	if (j++ & 1)
		2893	{
		2894	assert (("libev: io watcher list contains a loop", w != w2));
		2895	w2 = w2->next;
		2896	}
		2897
2563	assert (("libev: inactive fd watcher on anfd list", ev_active (w) == 1));	2898	assert (("libev: inactive fd watcher on anfd list", ev_active (w) == 1));
2564	assert (("libev: fd mismatch between watcher and anfd", ((ev_io *)w)->fd == i));	2899	assert (("libev: fd mismatch between watcher and anfd", ((ev_io *)w)->fd == i));
2565	}	2900	}
		2901	}
2566		2902
2567	assert (timermax >= timercnt);	2903	assert (timermax >= timercnt);
2568	verify_heap (EV_A_ timers, timercnt);	2904	verify_heap (EV_A_ timers, timercnt);
2569		2905
2570	#if EV_PERIODIC_ENABLE	2906	#if EV_PERIODIC_ENABLE
…		…
2651	}	2987	}
2652		2988
2653	void	2989	void
2654	ev_loop_fork (EV_P) EV_THROW	2990	ev_loop_fork (EV_P) EV_THROW
2655	{	2991	{
2656	postfork = 1; /* must be in line with ev_default_fork */	2992	postfork = 1;
2657	}	2993	}
2658		2994
2659	/*****************************************************************************/	2995	/*****************************************************************************/
2660		2996
2661	void	2997	void
…		…
2677	}	3013	}
2678		3014
2679	void noinline	3015	void noinline
2680	ev_invoke_pending (EV_P)	3016	ev_invoke_pending (EV_P)
2681	{	3017	{
2682	int pri;	3018	pendingpri = NUMPRI;
2683		3019
2684	for (pri = NUMPRI; pri--; )	3020	while (pendingpri) /* pendingpri possibly gets modified in the inner loop */
		3021	{
		3022	--pendingpri;
		3023
2685	while (pendingcnt [pri])	3024	while (pendingcnt [pendingpri])
2686	{	3025	{
2687	ANPENDING *p = pendings [pri] + --pendingcnt [pri];	3026	ANPENDING *p = pendings [pendingpri] + --pendingcnt [pendingpri];
2688		3027
2689	p->w->pending = 0;	3028	p->w->pending = 0;
2690	EV_CB_INVOKE (p->w, p->events);	3029	EV_CB_INVOKE (p->w, p->events);
2691	EV_FREQUENT_CHECK;	3030	EV_FREQUENT_CHECK;
2692	}	3031	}
		3032	}
2693	}	3033	}
2694		3034
2695	#if EV_IDLE_ENABLE	3035	#if EV_IDLE_ENABLE
2696	/* make idle watchers pending. this handles the "call-idle */	3036	/* make idle watchers pending. this handles the "call-idle */
2697	/* only when higher priorities are idle" logic */	3037	/* only when higher priorities are idle" logic */
…		…
2787	{	3127	{
2788	EV_FREQUENT_CHECK;	3128	EV_FREQUENT_CHECK;
2789		3129
2790	while (periodiccnt && ANHE_at (periodics [HEAP0]) < ev_rt_now)	3130	while (periodiccnt && ANHE_at (periodics [HEAP0]) < ev_rt_now)
2791	{	3131	{
2792	int feed_count = 0;
2793
2794	do	3132	do
2795	{	3133	{
2796	ev_periodic w = (ev_periodic )ANHE_w (periodics [HEAP0]);	3134	ev_periodic w = (ev_periodic )ANHE_w (periodics [HEAP0]);
2797		3135
2798	/assert (("libev: inactive timer on periodic heap detected", ev_is_active (w)));/	3136	/assert (("libev: inactive timer on periodic heap detected", ev_is_active (w)));/
…		…
3057	backend_poll (EV_A_ waittime);	3395	backend_poll (EV_A_ waittime);
3058	assert ((loop_done = EVBREAK_CANCEL, 1)); /* assert for side effect */	3396	assert ((loop_done = EVBREAK_CANCEL, 1)); /* assert for side effect */
3059		3397
3060	pipe_write_wanted = 0; /* just an optimisation, no fence needed */	3398	pipe_write_wanted = 0; /* just an optimisation, no fence needed */
3061		3399
		3400	ECB_MEMORY_FENCE_ACQUIRE;
3062	if (pipe_write_skipped)	3401	if (pipe_write_skipped)
3063	{	3402	{
3064	assert (("libev: pipe_w not active, but pipe not written", ev_is_active (&pipe_w)));	3403	assert (("libev: pipe_w not active, but pipe not written", ev_is_active (&pipe_w)));
3065	ev_feed_event (EV_A_ &pipe_w, EV_CUSTOM);	3404	ev_feed_event (EV_A_ &pipe_w, EV_CUSTOM);
3066	}	3405	}
…		…
3241	EV_FREQUENT_CHECK;	3580	EV_FREQUENT_CHECK;
3242		3581
3243	ev_start (EV_A_ (W)w, 1);	3582	ev_start (EV_A_ (W)w, 1);
3244	array_needsize (ANFD, anfds, anfdmax, fd + 1, array_init_zero);	3583	array_needsize (ANFD, anfds, anfdmax, fd + 1, array_init_zero);
3245	wlist_add (&anfds[fd].head, (WL)w);	3584	wlist_add (&anfds[fd].head, (WL)w);
		3585
		3586	/* common bug, apparently */
		3587	assert (("libev: ev_io_start called with corrupted watcher", ((WL)w)->next != (WL)w));
3246		3588
3247	fd_change (EV_A_ fd, w->events & EV__IOFDSET \| EV_ANFD_REIFY);	3589	fd_change (EV_A_ fd, w->events & EV__IOFDSET \| EV_ANFD_REIFY);
3248	w->events &= ~EV__IOFDSET;	3590	w->events &= ~EV__IOFDSET;
3249		3591
3250	EV_FREQUENT_CHECK;	3592	EV_FREQUENT_CHECK;
…		…
3441	#if EV_MULTIPLICITY	3783	#if EV_MULTIPLICITY
3442	assert (("libev: a signal must not be attached to two different loops",	3784	assert (("libev: a signal must not be attached to two different loops",
3443	!signals [w->signum - 1].loop \|\| signals [w->signum - 1].loop == loop));	3785	!signals [w->signum - 1].loop \|\| signals [w->signum - 1].loop == loop));
3444		3786
3445	signals [w->signum - 1].loop = EV_A;	3787	signals [w->signum - 1].loop = EV_A;
		3788	ECB_MEMORY_FENCE_RELEASE;
3446	#endif	3789	#endif
3447		3790
3448	EV_FREQUENT_CHECK;	3791	EV_FREQUENT_CHECK;
3449		3792
3450	#if EV_USE_SIGNALFD	3793	#if EV_USE_SIGNALFD
…		…
3605	# define EV_INOTIFY_BUFSIZE (sizeof (struct inotify_event) * 2 + NAME_MAX)	3948	# define EV_INOTIFY_BUFSIZE (sizeof (struct inotify_event) * 2 + NAME_MAX)
3606		3949
3607	static void noinline	3950	static void noinline
3608	infy_add (EV_P_ ev_stat *w)	3951	infy_add (EV_P_ ev_stat *w)
3609	{	3952	{
3610	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);	3953	w->wd = inotify_add_watch (fs_fd, w->path,
		3954	IN_ATTRIB \| IN_DELETE_SELF \| IN_MOVE_SELF \| IN_MODIFY
		3955	\| IN_CREATE \| IN_DELETE \| IN_MOVED_FROM \| IN_MOVED_TO
		3956	\| IN_DONT_FOLLOW \| IN_MASK_ADD);
3611		3957
3612	if (w->wd >= 0)	3958	if (w->wd >= 0)
3613	{	3959	{
3614	struct statfs sfs;	3960	struct statfs sfs;
3615		3961
…		…
3619		3965
3620	if (!fs_2625)	3966	if (!fs_2625)
3621	w->timer.repeat = w->interval ? w->interval : DEF_STAT_INTERVAL;	3967	w->timer.repeat = w->interval ? w->interval : DEF_STAT_INTERVAL;
3622	else if (!statfs (w->path, &sfs)	3968	else if (!statfs (w->path, &sfs)
3623	&& (sfs.f_type == 0x1373 /* devfs */	3969	&& (sfs.f_type == 0x1373 /* devfs */
		3970	\|\| sfs.f_type == 0x4006 /* fat */
		3971	\|\| sfs.f_type == 0x4d44 /* msdos */
3624	\|\| sfs.f_type == 0xEF53 /* ext2/3 */	3972	\|\| sfs.f_type == 0xEF53 /* ext2/3 */
		3973	\|\| sfs.f_type == 0x72b6 /* jffs2 */
		3974	\|\| sfs.f_type == 0x858458f6 /* ramfs */
		3975	\|\| sfs.f_type == 0x5346544e /* ntfs */
3625	\|\| sfs.f_type == 0x3153464a /* jfs */	3976	\|\| sfs.f_type == 0x3153464a /* jfs */
		3977	\|\| sfs.f_type == 0x9123683e /* btrfs */
3626	\|\| sfs.f_type == 0x52654973 /* reiser3 */	3978	\|\| sfs.f_type == 0x52654973 /* reiser3 */
3627	\|\| sfs.f_type == 0x01021994 /* tempfs */	3979	\|\| sfs.f_type == 0x01021994 /* tmpfs */
3628	\|\| sfs.f_type == 0x58465342 /* xfs */))	3980	\|\| sfs.f_type == 0x58465342 /* xfs */))
3629	w->timer.repeat = 0.; /* filesystem is local, kernel new enough */	3981	w->timer.repeat = 0.; /* filesystem is local, kernel new enough */
3630	else	3982	else
3631	w->timer.repeat = w->interval ? w->interval : NFS_STAT_INTERVAL; /* remote, use reduced frequency */	3983	w->timer.repeat = w->interval ? w->interval : NFS_STAT_INTERVAL; /* remote, use reduced frequency */
3632	}	3984	}

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Comparing libev/ev.c (file contents): Revision 1.422 by root, Wed Apr 18 06:09:29 2012 UTC vs. Revision 1.458 by root, Sun Oct 27 16:26:07 2013 UTC

Diff Legend

Comparing libev/ev.c (file contents):
Revision 1.422 by root, Wed Apr 18 06:09:29 2012 UTC vs.
Revision 1.458 by root, Sun Oct 27 16:26:07 2013 UTC