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

Comparing libev/ev.c (file contents):
Revision 1.420 by root, Wed Apr 18 05:44:42 2012 UTC vs.
Revision 1.453 by root, Thu Feb 28 00:33:25 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 0x00010002
		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
528	#endif	552	#endif
529		553
530	/* many compilers define _GNUC_ to some versions but then only implement	554	/* many compilers define _GNUC_ to some versions but then only implement
531	* what their idiot authors think are the "more important" extensions,	555	* what their idiot authors think are the "more important" extensions,
532	* causing enormous grief in return for some better fake benchmark numbers.	556	* causing enormous grief in return for some better fake benchmark numbers.
…		…
540	#else	564	#else
541	#define ECB_GCC_VERSION(major,minor) (__GNUC__ > (major) \|\| (__GNUC__ == (major) && __GNUC_MINOR__ >= (minor)))	565	#define ECB_GCC_VERSION(major,minor) (__GNUC__ > (major) \|\| (__GNUC__ == (major) && __GNUC_MINOR__ >= (minor)))
542	#endif	566	#endif
543	#endif	567	#endif
544		568
		569	#define ECB_C (__STDC__+0) /* this assumes that __STDC__ is either empty or a number */
		570	#define ECB_C99 (__STDC_VERSION__ >= 199901L)
		571	#define ECB_C11 (__STDC_VERSION__ >= 201112L)
		572	#define ECB_CPP (__cplusplus+0)
		573	#define ECB_CPP11 (__cplusplus >= 201103L)
		574
		575	#if ECB_CPP
		576	#define ECB_EXTERN_C extern "C"
		577	#define ECB_EXTERN_C_BEG ECB_EXTERN_C {
		578	#define ECB_EXTERN_C_END }
		579	#else
		580	#define ECB_EXTERN_C extern
		581	#define ECB_EXTERN_C_BEG
		582	#define ECB_EXTERN_C_END
		583	#endif
		584
545	/*****************************************************************************/	585	/*****************************************************************************/
546		586
547	/* ECB_NO_THREADS - ecb is not used by multiple threads, ever */	587	/* 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 */	588	/* ECB_NO_SMP - ecb might be used in multiple threads, but only on a single cpu */
549		589
550	#if ECB_NO_THREADS	590	#if ECB_NO_THREADS
551	# define ECB_NO_SMP 1	591	#define ECB_NO_SMP 1
552	#endif	592	#endif
553		593
554	#if ECB_NO_THREADS \|\| ECB_NO_SMP	594	#if ECB_NO_SMP
555	#define ECB_MEMORY_FENCE do { } while (0)	595	#define ECB_MEMORY_FENCE do { } while (0)
556	#endif	596	#endif
557		597
558	#ifndef ECB_MEMORY_FENCE	598	#ifndef ECB_MEMORY_FENCE
559	#if ECB_GCC_VERSION(2,5) \|\| defined __INTEL_COMPILER \|\| (__llvm__ && __GNUC__) \|\| __SUNPRO_C >= 0x5110 \|\| __SUNPRO_CC >= 0x5110	599	#if ECB_GCC_VERSION(2,5) \|\| defined __INTEL_COMPILER \|\| (__llvm__ && __GNUC__) \|\| __SUNPRO_C >= 0x5110 \|\| __SUNPRO_CC >= 0x5110
560	#if __i386 \|\| __i386__	600	#if __i386 \|\| __i386__
561	#define ECB_MEMORY_FENCE __asm__ __volatile__ ("lock; orb $0, -1(%%esp)" : : : "memory")	601	#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 */	602	#define ECB_MEMORY_FENCE_ACQUIRE __asm__ __volatile__ ("" : : : "memory")
563	#define ECB_MEMORY_FENCE_RELEASE do { } while (0) /* unlikely to change in future cpus */	603	#define ECB_MEMORY_FENCE_RELEASE __asm__ __volatile__ ("")
564	#elif __amd64 \|\| __amd64__ \|\| __x86_64 \|\| __x86_64__	604	#elif __amd64 \|\| __amd64__ \|\| __x86_64 \|\| __x86_64__
565	#define ECB_MEMORY_FENCE __asm__ __volatile__ ("mfence" : : : "memory")	605	#define ECB_MEMORY_FENCE __asm__ __volatile__ ("mfence" : : : "memory")
566	#define ECB_MEMORY_FENCE_ACQUIRE __asm__ __volatile__ ("lfence" : : : "memory")	606	#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 */	607	#define ECB_MEMORY_FENCE_RELEASE __asm__ __volatile__ ("")
568	#elif __powerpc__ \|\| __ppc__ \|\| __powerpc64__ \|\| __ppc64__	608	#elif __powerpc__ \|\| __ppc__ \|\| __powerpc64__ \|\| __ppc64__
569	#define ECB_MEMORY_FENCE __asm__ __volatile__ ("sync" : : : "memory")	609	#define ECB_MEMORY_FENCE __asm__ __volatile__ ("sync" : : : "memory")
570	#elif defined __ARM_ARCH_6__ \|\| defined __ARM_ARCH_6J__ \	610	#elif defined __ARM_ARCH_6__ \|\| defined __ARM_ARCH_6J__ \
571	\|\| defined __ARM_ARCH_6K__ \|\| defined __ARM_ARCH_6ZK__	611	\|\| 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")	612	#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__ \	613	#elif defined __ARM_ARCH_7__ \|\| defined __ARM_ARCH_7A__ \
574	\|\| defined __ARM_ARCH_7M__ \|\| defined __ARM_ARCH_7R__	614	\|\| defined __ARM_ARCH_7M__ \|\| defined __ARM_ARCH_7R__
575	#define ECB_MEMORY_FENCE __asm__ __volatile__ ("dmb" : : : "memory")	615	#define ECB_MEMORY_FENCE __asm__ __volatile__ ("dmb" : : : "memory")
576	#elif __sparc \|\| __sparc__	616	#elif __sparc \|\| __sparc__
577	#define ECB_MEMORY_FENCE __asm__ __volatile__ ("membar #LoadStore \| #LoadLoad \| #StoreStore \| #StoreLoad \| " : : : "memory")	617	#define ECB_MEMORY_FENCE __asm__ __volatile__ ("membar #LoadStore \| #LoadLoad \| #StoreStore \| #StoreLoad" : : : "memory")
578	#define ECB_MEMORY_FENCE_ACQUIRE __asm__ __volatile__ ("membar #LoadStore \| #LoadLoad" : : : "memory")	618	#define ECB_MEMORY_FENCE_ACQUIRE __asm__ __volatile__ ("membar #LoadStore \| #LoadLoad" : : : "memory")
579	#define ECB_MEMORY_FENCE_RELEASE __asm__ __volatile__ ("membar #LoadStore \| #StoreStore")	619	#define ECB_MEMORY_FENCE_RELEASE __asm__ __volatile__ ("membar #LoadStore \| #StoreStore")
580	#elif defined __s390__ \|\| defined __s390x__	620	#elif defined __s390__ \|\| defined __s390x__
581	#define ECB_MEMORY_FENCE __asm__ __volatile__ ("bcr 15,0" : : : "memory")	621	#define ECB_MEMORY_FENCE __asm__ __volatile__ ("bcr 15,0" : : : "memory")
582	#elif defined __mips__	622	#elif defined __mips__
583	#define ECB_MEMORY_FENCE __asm__ __volatile__ ("sync" : : : "memory")	623	#define ECB_MEMORY_FENCE __asm__ __volatile__ ("sync" : : : "memory")
584	#elif defined __alpha__	624	#elif defined __alpha__
585	#define ECB_MEMORY_FENCE __asm__ __volatile__ ("mb" : : : "memory")	625	#define ECB_MEMORY_FENCE __asm__ __volatile__ ("mb" : : : "memory")
		626	#elif defined __hppa__
		627	#define ECB_MEMORY_FENCE __asm__ __volatile__ ("" : : : "memory")
		628	#define ECB_MEMORY_FENCE_RELEASE __asm__ __volatile__ ("")
		629	#elif defined __ia64__
		630	#define ECB_MEMORY_FENCE __asm__ __volatile__ ("mf" : : : "memory")
586	#endif	631	#endif
587	#endif	632	#endif
588	#endif	633	#endif
589		634
590	#ifndef ECB_MEMORY_FENCE	635	#ifndef ECB_MEMORY_FENCE
		636	#if ECB_GCC_VERSION(4,7)
		637	/* see comment below (stdatomic.h) about the C11 memory model. */
		638	#define ECB_MEMORY_FENCE __atomic_thread_fence (__ATOMIC_SEQ_CST)
		639
		640	/* The __has_feature syntax from clang is so misdesigned that we cannot use it
		641	* without risking compile time errors with other compilers. We could
		642	* define our own ecb_clang_has_feature, but I just can't be bothered to work
		643	* around this shit time and again.
		644	* #elif defined __clang && __has_feature (cxx_atomic)
		645	* // see comment below (stdatomic.h) about the C11 memory model.
		646	* #define ECB_MEMORY_FENCE __c11_atomic_thread_fence (__ATOMIC_SEQ_CST)
		647	*/
		648
591	#if ECB_GCC_VERSION(4,4) \|\| defined __INTEL_COMPILER \|\| defined __clang__	649	#elif ECB_GCC_VERSION(4,4) \|\| defined __INTEL_COMPILER \|\| defined __clang__
592	#define ECB_MEMORY_FENCE __sync_synchronize ()	650	#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 */	651	#elif _MSC_VER >= 1400 /* VC++ 2005 */
596	#pragma intrinsic(_ReadBarrier,_WriteBarrier,_ReadWriteBarrier)	652	#pragma intrinsic(_ReadBarrier,_WriteBarrier,_ReadWriteBarrier)
597	#define ECB_MEMORY_FENCE _ReadWriteBarrier ()	653	#define ECB_MEMORY_FENCE _ReadWriteBarrier ()
598	#define ECB_MEMORY_FENCE_ACQUIRE _ReadWriteBarrier () /* according to msdn, _ReadBarrier is not a load fence */	654	#define ECB_MEMORY_FENCE_ACQUIRE _ReadWriteBarrier () /* according to msdn, _ReadBarrier is not a load fence */
599	#define ECB_MEMORY_FENCE_RELEASE _WriteBarrier ()	655	#define ECB_MEMORY_FENCE_RELEASE _WriteBarrier ()
…		…
609	#define ECB_MEMORY_FENCE __sync ()	665	#define ECB_MEMORY_FENCE __sync ()
610	#endif	666	#endif
611	#endif	667	#endif
612		668
613	#ifndef ECB_MEMORY_FENCE	669	#ifndef ECB_MEMORY_FENCE
		670	#if ECB_C11 && !defined __STDC_NO_ATOMICS__
		671	/* we assume that these memory fences work on all variables/all memory accesses, */
		672	/* not just C11 atomics and atomic accesses */
		673	#include <stdatomic.h>
		674	/* Unfortunately, neither gcc 4.7 nor clang 3.1 generate any instructions for */
		675	/* any fence other than seq_cst, which isn't very efficient for us. */
		676	/* Why that is, we don't know - either the C11 memory model is quite useless */
		677	/* for most usages, or gcc and clang have a bug */
		678	/* I currently lean towards the latter, and inefficiently implement */
		679	/* all three of ecb's fences as a seq_cst fence */
		680	#define ECB_MEMORY_FENCE atomic_thread_fence (memory_order_seq_cst)
		681	#endif
		682	#endif
		683
		684	#ifndef ECB_MEMORY_FENCE
614	#if !ECB_AVOID_PTHREADS	685	#if !ECB_AVOID_PTHREADS
615	/*	686	/*
616	* if you get undefined symbol references to pthread_mutex_lock,	687	* if you get undefined symbol references to pthread_mutex_lock,
617	* or failure to find pthread.h, then you should implement	688	* or failure to find pthread.h, then you should implement
618	* the ECB_MEMORY_FENCE operations for your cpu/compiler	689	* the ECB_MEMORY_FENCE operations for your cpu/compiler
…		…
636	#define ECB_MEMORY_FENCE_RELEASE ECB_MEMORY_FENCE	707	#define ECB_MEMORY_FENCE_RELEASE ECB_MEMORY_FENCE
637	#endif	708	#endif
638		709
639	/*****************************************************************************/	710	/*****************************************************************************/
640		711
641	#define ECB_C99 (__STDC_VERSION__ >= 199901L)
642
643	#if __cplusplus	712	#if __cplusplus
644	#define ecb_inline static inline	713	#define ecb_inline static inline
645	#elif ECB_GCC_VERSION(2,5)	714	#elif ECB_GCC_VERSION(2,5)
646	#define ecb_inline static __inline__	715	#define ecb_inline static __inline__
647	#elif ECB_C99	716	#elif ECB_C99
…		…
685	#elif ECB_GCC_VERSION(3,0)	754	#elif ECB_GCC_VERSION(3,0)
686	#define ecb_decltype(x) __typeof(x)	755	#define ecb_decltype(x) __typeof(x)
687	#endif	756	#endif
688		757
689	#define ecb_noinline ecb_attribute ((__noinline__))	758	#define ecb_noinline ecb_attribute ((__noinline__))
690	#define ecb_noreturn ecb_attribute ((__noreturn__))
691	#define ecb_unused ecb_attribute ((__unused__))	759	#define ecb_unused ecb_attribute ((__unused__))
692	#define ecb_const ecb_attribute ((__const__))	760	#define ecb_const ecb_attribute ((__const__))
693	#define ecb_pure ecb_attribute ((__pure__))	761	#define ecb_pure ecb_attribute ((__pure__))
		762
		763	#if ECB_C11
		764	#define ecb_noreturn _Noreturn
		765	#else
		766	#define ecb_noreturn ecb_attribute ((__noreturn__))
		767	#endif
694		768
695	#if ECB_GCC_VERSION(4,3)	769	#if ECB_GCC_VERSION(4,3)
696	#define ecb_artificial ecb_attribute ((__artificial__))	770	#define ecb_artificial ecb_attribute ((__artificial__))
697	#define ecb_hot ecb_attribute ((__hot__))	771	#define ecb_hot ecb_attribute ((__hot__))
698	#define ecb_cold ecb_attribute ((__cold__))	772	#define ecb_cold ecb_attribute ((__cold__))
…		…
789		863
790	return r + ecb_ld32 (x);	864	return r + ecb_ld32 (x);
791	}	865	}
792	#endif	866	#endif
793		867
		868	ecb_function_ ecb_bool ecb_is_pot32 (uint32_t x) ecb_const;
		869	ecb_function_ ecb_bool ecb_is_pot32 (uint32_t x) { return !(x & (x - 1)); }
		870	ecb_function_ ecb_bool ecb_is_pot64 (uint64_t x) ecb_const;
		871	ecb_function_ ecb_bool ecb_is_pot64 (uint64_t x) { return !(x & (x - 1)); }
		872
794	ecb_function_ uint8_t ecb_bitrev8 (uint8_t x) ecb_const;	873	ecb_function_ uint8_t ecb_bitrev8 (uint8_t x) ecb_const;
795	ecb_function_ uint8_t ecb_bitrev8 (uint8_t x)	874	ecb_function_ uint8_t ecb_bitrev8 (uint8_t x)
796	{	875	{
797	return ( (x * 0x0802U & 0x22110U)	876	return ( (x * 0x0802U & 0x22110U)
798	\| (x * 0x8020U & 0x88440U)) * 0x10101U >> 16;	877	\| (x * 0x8020U & 0x88440U)) * 0x10101U >> 16;
…		…
882	ecb_inline void ecb_unreachable (void) ecb_noreturn;	961	ecb_inline void ecb_unreachable (void) ecb_noreturn;
883	ecb_inline void ecb_unreachable (void) { }	962	ecb_inline void ecb_unreachable (void) { }
884	#endif	963	#endif
885		964
886	/* try to tell the compiler that some condition is definitely true */	965	/* try to tell the compiler that some condition is definitely true */
887	#define ecb_assume(cond) do { if (!(cond)) ecb_unreachable (); } while (0)	966	#define ecb_assume(cond) if (!(cond)) ecb_unreachable (); else 0
888		967
889	ecb_inline unsigned char ecb_byteorder_helper (void) ecb_const;	968	ecb_inline unsigned char ecb_byteorder_helper (void) ecb_const;
890	ecb_inline unsigned char	969	ecb_inline unsigned char
891	ecb_byteorder_helper (void)	970	ecb_byteorder_helper (void)
892	{	971	{
893	const uint32_t u = 0x11223344;	972	/* the union code still generates code under pressure in gcc, */
894	return (unsigned char )&u;	973	/* but less than using pointers, and always seems to */
		974	/* successfully return a constant. */
		975	/* the reason why we have this horrible preprocessor mess */
		976	/* is to avoid it in all cases, at least on common architectures */
		977	/* or when using a recent enough gcc version (>= 4.6) */
		978	#if __i386 \|\| __i386__ \|\| _M_X86 \|\| __amd64 \|\| __amd64__ \|\| _M_X64
		979	return 0x44;
		980	#elif __BYTE_ORDER__ && __BYTE_ORDER__ == __ORDER_LITTLE_ENDIAN__
		981	return 0x44;
		982	#elif __BYTE_ORDER__ && __BYTE_ORDER__ == __ORDER_BIG_ENDIAN__
		983	return 0x11;
		984	#else
		985	union
		986	{
		987	uint32_t i;
		988	uint8_t c;
		989	} u = { 0x11223344 };
		990	return u.c;
		991	#endif
895	}	992	}
896		993
897	ecb_inline ecb_bool ecb_big_endian (void) ecb_const;	994	ecb_inline ecb_bool ecb_big_endian (void) ecb_const;
898	ecb_inline ecb_bool ecb_big_endian (void) { return ecb_byteorder_helper () == 0x11; }	995	ecb_inline ecb_bool ecb_big_endian (void) { return ecb_byteorder_helper () == 0x11; }
899	ecb_inline ecb_bool ecb_little_endian (void) ecb_const;	996	ecb_inline ecb_bool ecb_little_endian (void) ecb_const;
…		…
930	}	1027	}
931	#else	1028	#else
932	#define ecb_array_length(name) (sizeof (name) / sizeof (name [0]))	1029	#define ecb_array_length(name) (sizeof (name) / sizeof (name [0]))
933	#endif	1030	#endif
934		1031
		1032	/*******************************************************************************/
		1033	/* floating point stuff, can be disabled by defining ECB_NO_LIBM */
		1034
		1035	/* basically, everything uses "ieee pure-endian" floating point numbers */
		1036	/* the only noteworthy exception is ancient armle, which uses order 43218765 */
		1037	#if 0 \
		1038	\|\| __i386 \|\| __i386__ \
		1039	\|\| __amd64 \|\| __amd64__ \|\| __x86_64 \|\| __x86_64__ \
		1040	\|\| __powerpc__ \|\| __ppc__ \|\| __powerpc64__ \|\| __ppc64__ \
		1041	\|\| defined __arm__ && defined __ARM_EABI__ \
		1042	\|\| defined __s390__ \|\| defined __s390x__ \
		1043	\|\| defined __mips__ \
		1044	\|\| defined __alpha__ \
		1045	\|\| defined __hppa__ \
		1046	\|\| defined __ia64__ \
		1047	\|\| defined _M_IX86 \|\| defined _M_AMD64 \|\| defined _M_IA64
		1048	#define ECB_STDFP 1
		1049	#include <string.h> /* for memcpy */
		1050	#else
		1051	#define ECB_STDFP 0
		1052	#include <math.h> /* for frexp, ldexp */
		1053	#endif
		1054
		1055	#ifndef ECB_NO_LIBM
		1056
		1057	/* convert a float to ieee single/binary32 */
		1058	ecb_function_ uint32_t ecb_float_to_binary32 (float x) ecb_const;
		1059	ecb_function_ uint32_t
		1060	ecb_float_to_binary32 (float x)
		1061	{
		1062	uint32_t r;
		1063
		1064	#if ECB_STDFP
		1065	memcpy (&r, &x, 4);
		1066	#else
		1067	/* slow emulation, works for anything but -0 */
		1068	uint32_t m;
		1069	int e;
		1070
		1071	if (x == 0e0f ) return 0x00000000U;
		1072	if (x > +3.40282346638528860e+38f) return 0x7f800000U;
		1073	if (x < -3.40282346638528860e+38f) return 0xff800000U;
		1074	if (x != x ) return 0x7fbfffffU;
		1075
		1076	m = frexpf (x, &e) * 0x1000000U;
		1077
		1078	r = m & 0x80000000U;
		1079
		1080	if (r)
		1081	m = -m;
		1082
		1083	if (e <= -126)
		1084	{
		1085	m &= 0xffffffU;
		1086	m >>= (-125 - e);
		1087	e = -126;
		1088	}
		1089
		1090	r \|= (e + 126) << 23;
		1091	r \|= m & 0x7fffffU;
		1092	#endif
		1093
		1094	return r;
		1095	}
		1096
		1097	/* converts an ieee single/binary32 to a float */
		1098	ecb_function_ float ecb_binary32_to_float (uint32_t x) ecb_const;
		1099	ecb_function_ float
		1100	ecb_binary32_to_float (uint32_t x)
		1101	{
		1102	float r;
		1103
		1104	#if ECB_STDFP
		1105	memcpy (&r, &x, 4);
		1106	#else
		1107	/* emulation, only works for normals and subnormals and +0 */
		1108	int neg = x >> 31;
		1109	int e = (x >> 23) & 0xffU;
		1110
		1111	x &= 0x7fffffU;
		1112
		1113	if (e)
		1114	x \|= 0x800000U;
		1115	else
		1116	e = 1;
		1117
		1118	/* we distrust ldexpf a bit and do the 2*-24 scaling by an extra multiply /
		1119	r = ldexpf (x * (0.5f / 0x800000U), e - 126);
		1120
		1121	r = neg ? -r : r;
		1122	#endif
		1123
		1124	return r;
		1125	}
		1126
		1127	/* convert a double to ieee double/binary64 */
		1128	ecb_function_ uint64_t ecb_double_to_binary64 (double x) ecb_const;
		1129	ecb_function_ uint64_t
		1130	ecb_double_to_binary64 (double x)
		1131	{
		1132	uint64_t r;
		1133
		1134	#if ECB_STDFP
		1135	memcpy (&r, &x, 8);
		1136	#else
		1137	/* slow emulation, works for anything but -0 */
		1138	uint64_t m;
		1139	int e;
		1140
		1141	if (x == 0e0 ) return 0x0000000000000000U;
		1142	if (x > +1.79769313486231470e+308) return 0x7ff0000000000000U;
		1143	if (x < -1.79769313486231470e+308) return 0xfff0000000000000U;
		1144	if (x != x ) return 0X7ff7ffffffffffffU;
		1145
		1146	m = frexp (x, &e) * 0x20000000000000U;
		1147
		1148	r = m & 0x8000000000000000;;
		1149
		1150	if (r)
		1151	m = -m;
		1152
		1153	if (e <= -1022)
		1154	{
		1155	m &= 0x1fffffffffffffU;
		1156	m >>= (-1021 - e);
		1157	e = -1022;
		1158	}
		1159
		1160	r \|= ((uint64_t)(e + 1022)) << 52;
		1161	r \|= m & 0xfffffffffffffU;
		1162	#endif
		1163
		1164	return r;
		1165	}
		1166
		1167	/* converts an ieee double/binary64 to a double */
		1168	ecb_function_ double ecb_binary64_to_double (uint64_t x) ecb_const;
		1169	ecb_function_ double
		1170	ecb_binary64_to_double (uint64_t x)
		1171	{
		1172	double r;
		1173
		1174	#if ECB_STDFP
		1175	memcpy (&r, &x, 8);
		1176	#else
		1177	/* emulation, only works for normals and subnormals and +0 */
		1178	int neg = x >> 63;
		1179	int e = (x >> 52) & 0x7ffU;
		1180
		1181	x &= 0xfffffffffffffU;
		1182
		1183	if (e)
		1184	x \|= 0x10000000000000U;
		1185	else
		1186	e = 1;
		1187
		1188	/* we distrust ldexp a bit and do the 2*-53 scaling by an extra multiply /
		1189	r = ldexp (x * (0.5 / 0x10000000000000U), e - 1022);
		1190
		1191	r = neg ? -r : r;
		1192	#endif
		1193
		1194	return r;
		1195	}
		1196
		1197	#endif
		1198
935	#endif	1199	#endif
936		1200
937	/* ECB.H END */	1201	/* ECB.H END */
938		1202
939	#if ECB_MEMORY_FENCE_NEEDS_PTHREADS	1203	#if ECB_MEMORY_FENCE_NEEDS_PTHREADS
…		…
1108	#endif	1372	#endif
1109		1373
1110	static void (syserr_cb)(const char msg) EV_THROW;	1374	static void (syserr_cb)(const char msg) EV_THROW;
1111		1375
1112	void ecb_cold	1376	void ecb_cold
1113	ev_set_syserr_cb (void (cb)(const char msg)) EV_THROW	1377	ev_set_syserr_cb (void (cb)(const char msg) EV_THROW) EV_THROW
1114	{	1378	{
1115	syserr_cb = cb;	1379	syserr_cb = cb;
1116	}	1380	}
1117		1381
1118	static void noinline ecb_cold	1382	static void noinline ecb_cold
…		…
1136	abort ();	1400	abort ();
1137	}	1401	}
1138	}	1402	}
1139		1403
1140	static void *	1404	static void *
1141	ev_realloc_emul (void *ptr, long size)	1405	ev_realloc_emul (void *ptr, long size) EV_THROW
1142	{	1406	{
1143	#if __GLIBC__
1144	return realloc (ptr, size);
1145	#else
1146	/* some systems, notably openbsd and darwin, fail to properly	1407	/* some systems, notably openbsd and darwin, fail to properly
1147	* implement realloc (x, 0) (as required by both ansi c-89 and	1408	* implement realloc (x, 0) (as required by both ansi c-89 and
1148	* the single unix specification, so work around them here.	1409	* the single unix specification, so work around them here.
		1410	* recently, also (at least) fedora and debian started breaking it,
		1411	* despite documenting it otherwise.
1149	*/	1412	*/
1150		1413
1151	if (size)	1414	if (size)
1152	return realloc (ptr, size);	1415	return realloc (ptr, size);
1153		1416
1154	free (ptr);	1417	free (ptr);
1155	return 0;	1418	return 0;
1156	#endif
1157	}	1419	}
1158		1420
1159	static void (alloc)(void *ptr, long size) EV_THROW = ev_realloc_emul;	1421	static void (alloc)(void *ptr, long size) EV_THROW = ev_realloc_emul;
1160		1422
1161	void ecb_cold	1423	void ecb_cold
1162	ev_set_allocator (void (cb)(void *ptr, long size)) EV_THROW	1424	ev_set_allocator (void (cb)(void *ptr, long size) EV_THROW) EV_THROW
1163	{	1425	{
1164	alloc = cb;	1426	alloc = cb;
1165	}	1427	}
1166		1428
1167	inline_speed void *	1429	inline_speed void *
…		…
1430	w_->pending = ++pendingcnt [pri];	1692	w_->pending = ++pendingcnt [pri];
1431	array_needsize (ANPENDING, pendings [pri], pendingmax [pri], w_->pending, EMPTY2);	1693	array_needsize (ANPENDING, pendings [pri], pendingmax [pri], w_->pending, EMPTY2);
1432	pendings [pri][w_->pending - 1].w = w_;	1694	pendings [pri][w_->pending - 1].w = w_;
1433	pendings [pri][w_->pending - 1].events = revents;	1695	pendings [pri][w_->pending - 1].events = revents;
1434	}	1696	}
		1697
		1698	pendingpri = NUMPRI - 1;
1435	}	1699	}
1436		1700
1437	inline_speed void	1701	inline_speed void
1438	feed_reverse (EV_P_ W w)	1702	feed_reverse (EV_P_ W w)
1439	{	1703	{
…		…
1814	static void noinline ecb_cold	2078	static void noinline ecb_cold
1815	evpipe_init (EV_P)	2079	evpipe_init (EV_P)
1816	{	2080	{
1817	if (!ev_is_active (&pipe_w))	2081	if (!ev_is_active (&pipe_w))
1818	{	2082	{
		2083	int fds [2];
		2084
1819	# if EV_USE_EVENTFD	2085	# if EV_USE_EVENTFD
		2086	fds [0] = -1;
1820	evfd = eventfd (0, EFD_NONBLOCK \| EFD_CLOEXEC);	2087	fds [1] = eventfd (0, EFD_NONBLOCK \| EFD_CLOEXEC);
1821	if (evfd < 0 && errno == EINVAL)	2088	if (fds [1] < 0 && errno == EINVAL)
1822	evfd = eventfd (0, 0);	2089	fds [1] = eventfd (0, 0);
1823		2090
1824	if (evfd >= 0)	2091	if (fds [1] < 0)
		2092	# endif
1825	{	2093	{
		2094	while (pipe (fds))
		2095	ev_syserr ("(libev) error creating signal/async pipe");
		2096
		2097	fd_intern (fds [0]);
		2098	}
		2099
		2100	fd_intern (fds [1]);
		2101
1826	evpipe [0] = -1;	2102	evpipe [0] = fds [0];
1827	fd_intern (evfd); /* doing it twice doesn't hurt */	2103
1828	ev_io_set (&pipe_w, evfd, EV_READ);	2104	if (evpipe [1] < 0)
		2105	evpipe [1] = fds [1]; /* first call, set write fd */
		2106	else
		2107	{
		2108	/* on subsequent calls, do not change evpipe [1] */
		2109	/* so that evpipe_write can always rely on its value. */
		2110	/* this branch does not do anything sensible on windows, */
		2111	/* so must not be executed on windows */
		2112
		2113	dup2 (fds [1], evpipe [1]);
		2114	close (fds [1]);
		2115	}
		2116
		2117	ev_io_set (&pipe_w, evpipe [0] < 0 ? evpipe [1] : evpipe [0], EV_READ);
		2118	ev_io_start (EV_A_ &pipe_w);
		2119	ev_unref (EV_A); /* watcher should not keep loop alive */
		2120	}
		2121	}
		2122
		2123	inline_speed void
		2124	evpipe_write (EV_P_ EV_ATOMIC_T *flag)
		2125	{
		2126	ECB_MEMORY_FENCE; /* push out the write before this function was called, acquire flag */
		2127
		2128	if (expect_true (*flag))
		2129	return;
		2130
		2131	*flag = 1;
		2132	ECB_MEMORY_FENCE_RELEASE; /* make sure flag is visible before the wakeup */
		2133
		2134	pipe_write_skipped = 1;
		2135
		2136	ECB_MEMORY_FENCE; /* make sure pipe_write_skipped is visible before we check pipe_write_wanted */
		2137
		2138	if (pipe_write_wanted)
		2139	{
		2140	int old_errno;
		2141
		2142	pipe_write_skipped = 0;
		2143	ECB_MEMORY_FENCE_RELEASE;
		2144
		2145	old_errno = errno; /* save errno because write will clobber it */
		2146
		2147	#if EV_USE_EVENTFD
		2148	if (evpipe [0] < 0)
		2149	{
		2150	uint64_t counter = 1;
		2151	write (evpipe [1], &counter, sizeof (uint64_t));
1829	}	2152	}
1830	else	2153	else
1831	# endif	2154	#endif
1832	{	2155	{
1833	while (pipe (evpipe))	2156	#ifdef _WIN32
1834	ev_syserr ("(libev) error creating signal/async pipe");	2157	WSABUF buf;
1835		2158	DWORD sent;
1836	fd_intern (evpipe [0]);	2159	buf.buf = &buf;
1837	fd_intern (evpipe [1]);	2160	buf.len = 1;
1838	ev_io_set (&pipe_w, evpipe [0], EV_READ);	2161	WSASend (EV_FD_TO_WIN32_HANDLE (evpipe [1]), &buf, 1, &sent, 0, 0, 0);
1839	}	2162	#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);	2163	write (evpipe [1], &(evpipe [1]), 1);
		2164	#endif
1885	}	2165	}
1886		2166
1887	errno = old_errno;	2167	errno = old_errno;
1888	}	2168	}
1889	}	2169	}
…		…
1896	int i;	2176	int i;
1897		2177
1898	if (revents & EV_READ)	2178	if (revents & EV_READ)
1899	{	2179	{
1900	#if EV_USE_EVENTFD	2180	#if EV_USE_EVENTFD
1901	if (evfd >= 0)	2181	if (evpipe [0] < 0)
1902	{	2182	{
1903	uint64_t counter;	2183	uint64_t counter;
1904	read (evfd, &counter, sizeof (uint64_t));	2184	read (evpipe [1], &counter, sizeof (uint64_t));
1905	}	2185	}
1906	else	2186	else
1907	#endif	2187	#endif
1908	{	2188	{
1909	char dummy;	2189	char dummy[4];
1910	/* see discussion in evpipe_write when you think this read should be recv in win32 */	2190	#ifdef _WIN32
		2191	WSABUF buf;
		2192	DWORD recvd;
		2193	DWORD flags = 0;
		2194	buf.buf = dummy;
		2195	buf.len = sizeof (dummy);
		2196	WSARecv (EV_FD_TO_WIN32_HANDLE (evpipe [0]), &buf, 1, &recvd, &flags, 0, 0);
		2197	#else
1911	read (evpipe [0], &dummy, 1);	2198	read (evpipe [0], &dummy, sizeof (dummy));
		2199	#endif
1912	}	2200	}
1913	}	2201	}
1914		2202
1915	pipe_write_skipped = 0;	2203	pipe_write_skipped = 0;
		2204
		2205	ECB_MEMORY_FENCE; /* push out skipped, acquire flags */
1916		2206
1917	#if EV_SIGNAL_ENABLE	2207	#if EV_SIGNAL_ENABLE
1918	if (sig_pending)	2208	if (sig_pending)
1919	{	2209	{
1920	sig_pending = 0;	2210	sig_pending = 0;
		2211
		2212	ECB_MEMORY_FENCE;
1921		2213
1922	for (i = EV_NSIG - 1; i--; )	2214	for (i = EV_NSIG - 1; i--; )
1923	if (expect_false (signals [i].pending))	2215	if (expect_false (signals [i].pending))
1924	ev_feed_signal_event (EV_A_ i + 1);	2216	ev_feed_signal_event (EV_A_ i + 1);
1925	}	2217	}
…		…
1927		2219
1928	#if EV_ASYNC_ENABLE	2220	#if EV_ASYNC_ENABLE
1929	if (async_pending)	2221	if (async_pending)
1930	{	2222	{
1931	async_pending = 0;	2223	async_pending = 0;
		2224
		2225	ECB_MEMORY_FENCE;
1932		2226
1933	for (i = asynccnt; i--; )	2227	for (i = asynccnt; i--; )
1934	if (asyncs [i]->sent)	2228	if (asyncs [i]->sent)
1935	{	2229	{
1936	asyncs [i]->sent = 0;	2230	asyncs [i]->sent = 0;
		2231	ECB_MEMORY_FENCE_RELEASE;
1937	ev_feed_event (EV_A_ asyncs [i], EV_ASYNC);	2232	ev_feed_event (EV_A_ asyncs [i], EV_ASYNC);
1938	}	2233	}
1939	}	2234	}
1940	#endif	2235	#endif
1941	}	2236	}
…		…
1944		2239
1945	void	2240	void
1946	ev_feed_signal (int signum) EV_THROW	2241	ev_feed_signal (int signum) EV_THROW
1947	{	2242	{
1948	#if EV_MULTIPLICITY	2243	#if EV_MULTIPLICITY
		2244	EV_P;
		2245	ECB_MEMORY_FENCE_ACQUIRE;
1949	EV_P = signals [signum - 1].loop;	2246	EV_A = signals [signum - 1].loop;
1950		2247
1951	if (!EV_A)	2248	if (!EV_A)
1952	return;	2249	return;
1953	#endif	2250	#endif
1954		2251
1955	if (!ev_active (&pipe_w))
1956	return;
1957
1958	signals [signum - 1].pending = 1;	2252	signals [signum - 1].pending = 1;
1959	evpipe_write (EV_A_ &sig_pending);	2253	evpipe_write (EV_A_ &sig_pending);
1960	}	2254	}
1961		2255
1962	static void	2256	static void
…		…
1972	void noinline	2266	void noinline
1973	ev_feed_signal_event (EV_P_ int signum) EV_THROW	2267	ev_feed_signal_event (EV_P_ int signum) EV_THROW
1974	{	2268	{
1975	WL w;	2269	WL w;
1976		2270
1977	if (expect_false (signum <= 0 \|\| signum > EV_NSIG))	2271	if (expect_false (signum <= 0 \|\| signum >= EV_NSIG))
1978	return;	2272	return;
1979		2273
1980	--signum;	2274	--signum;
1981		2275
1982	#if EV_MULTIPLICITY	2276	#if EV_MULTIPLICITY
…		…
1986	if (expect_false (signals [signum].loop != EV_A))	2280	if (expect_false (signals [signum].loop != EV_A))
1987	return;	2281	return;
1988	#endif	2282	#endif
1989		2283
1990	signals [signum].pending = 0;	2284	signals [signum].pending = 0;
		2285	ECB_MEMORY_FENCE_RELEASE;
1991		2286
1992	for (w = signals [signum].head; w; w = w->next)	2287	for (w = signals [signum].head; w; w = w->next)
1993	ev_feed_event (EV_A_ (W)w, EV_SIGNAL);	2288	ev_feed_event (EV_A_ (W)w, EV_SIGNAL);
1994	}	2289	}
1995		2290
…		…
2215	{	2510	{
2216	invoke_cb = invoke_pending_cb;	2511	invoke_cb = invoke_pending_cb;
2217	}	2512	}
2218		2513
2219	void	2514	void
2220	ev_set_loop_release_cb (EV_P_ void (release)(EV_P), void (acquire)(EV_P)) EV_THROW	2515	ev_set_loop_release_cb (EV_P_ void (release)(EV_P) EV_THROW, void (acquire)(EV_P) EV_THROW) EV_THROW
2221	{	2516	{
2222	release_cb = release;	2517	release_cb = release;
2223	acquire_cb = acquire;	2518	acquire_cb = acquire;
2224	}	2519	}
2225	#endif	2520	#endif
…		…
2279	#if EV_ASYNC_ENABLE	2574	#if EV_ASYNC_ENABLE
2280	async_pending = 0;	2575	async_pending = 0;
2281	#endif	2576	#endif
2282	pipe_write_skipped = 0;	2577	pipe_write_skipped = 0;
2283	pipe_write_wanted = 0;	2578	pipe_write_wanted = 0;
		2579	evpipe [0] = -1;
		2580	evpipe [1] = -1;
2284	#if EV_USE_INOTIFY	2581	#if EV_USE_INOTIFY
2285	fs_fd = flags & EVFLAG_NOINOTIFY ? -1 : -2;	2582	fs_fd = flags & EVFLAG_NOINOTIFY ? -1 : -2;
2286	#endif	2583	#endif
2287	#if EV_USE_SIGNALFD	2584	#if EV_USE_SIGNALFD
2288	sigfd = flags & EVFLAG_SIGNALFD ? -2 : -1;	2585	sigfd = flags & EVFLAG_SIGNALFD ? -2 : -1;
…		…
2319	}	2616	}
2320	}	2617	}
2321		2618
2322	/* free up a loop structure */	2619	/* free up a loop structure */
2323	void ecb_cold	2620	void ecb_cold
2324	ev_loop_destroy (EV_P) EV_THROW	2621	ev_loop_destroy (EV_P)
2325	{	2622	{
2326	int i;	2623	int i;
2327		2624
2328	#if EV_MULTIPLICITY	2625	#if EV_MULTIPLICITY
2329	/* mimic free (0) */	2626	/* mimic free (0) */
…		…
2339	EV_INVOKE_PENDING;	2636	EV_INVOKE_PENDING;
2340	}	2637	}
2341	#endif	2638	#endif
2342		2639
2343	#if EV_CHILD_ENABLE	2640	#if EV_CHILD_ENABLE
2344	if (ev_is_active (&childev))	2641	if (ev_is_default_loop (EV_A) && ev_is_active (&childev))
2345	{	2642	{
2346	ev_ref (EV_A); /* child watcher */	2643	ev_ref (EV_A); /* child watcher */
2347	ev_signal_stop (EV_A_ &childev);	2644	ev_signal_stop (EV_A_ &childev);
2348	}	2645	}
2349	#endif	2646	#endif
…		…
2351	if (ev_is_active (&pipe_w))	2648	if (ev_is_active (&pipe_w))
2352	{	2649	{
2353	/ev_ref (EV_A);/	2650	/ev_ref (EV_A);/
2354	/ev_io_stop (EV_A_ &pipe_w);/	2651	/ev_io_stop (EV_A_ &pipe_w);/
2355		2652
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]);	2653	if (evpipe [0] >= 0) EV_WIN32_CLOSE_FD (evpipe [0]);
2364	EV_WIN32_CLOSE_FD (evpipe [1]);	2654	if (evpipe [1] >= 0) EV_WIN32_CLOSE_FD (evpipe [1]);
2365	}
2366	}	2655	}
2367		2656
2368	#if EV_USE_SIGNALFD	2657	#if EV_USE_SIGNALFD
2369	if (ev_is_active (&sigfd_w))	2658	if (ev_is_active (&sigfd_w))
2370	close (sigfd);	2659	close (sigfd);
…		…
2456	#endif	2745	#endif
2457	#if EV_USE_INOTIFY	2746	#if EV_USE_INOTIFY
2458	infy_fork (EV_A);	2747	infy_fork (EV_A);
2459	#endif	2748	#endif
2460		2749
		2750	#if EV_SIGNAL_ENABLE \|\| EV_ASYNC_ENABLE
2461	if (ev_is_active (&pipe_w))	2751	if (ev_is_active (&pipe_w))
2462	{	2752	{
2463	/* pipe_write_wanted must be false now, so modifying fd vars should be safe */	2753	/* pipe_write_wanted must be false now, so modifying fd vars should be safe */
2464		2754
2465	ev_ref (EV_A);	2755	ev_ref (EV_A);
2466	ev_io_stop (EV_A_ &pipe_w);	2756	ev_io_stop (EV_A_ &pipe_w);
2467		2757
2468	#if EV_USE_EVENTFD
2469	if (evfd >= 0)
2470	close (evfd);
2471	#endif
2472
2473	if (evpipe [0] >= 0)	2758	if (evpipe [0] >= 0)
2474	{
2475	EV_WIN32_CLOSE_FD (evpipe [0]);	2759	EV_WIN32_CLOSE_FD (evpipe [0]);
2476	EV_WIN32_CLOSE_FD (evpipe [1]);
2477	}
2478		2760
2479	#if EV_SIGNAL_ENABLE \|\| EV_ASYNC_ENABLE
2480	evpipe_init (EV_A);	2761	evpipe_init (EV_A);
2481	/* now iterate over everything, in case we missed something */	2762	/* iterate over everything, in case we missed something before */
2482	pipecb (EV_A_ &pipe_w, EV_READ);	2763	ev_feed_event (EV_A_ &pipe_w, EV_CUSTOM);
2483	#endif
2484	}	2764	}
		2765	#endif
2485		2766
2486	postfork = 0;	2767	postfork = 0;
2487	}	2768	}
2488		2769
2489	#if EV_MULTIPLICITY	2770	#if EV_MULTIPLICITY
…		…
2545	void ecb_cold	2826	void ecb_cold
2546	ev_verify (EV_P) EV_THROW	2827	ev_verify (EV_P) EV_THROW
2547	{	2828	{
2548	#if EV_VERIFY	2829	#if EV_VERIFY
2549	int i;	2830	int i;
2550	WL w;	2831	WL w, w2;
2551		2832
2552	assert (activecnt >= -1);	2833	assert (activecnt >= -1);
2553		2834
2554	assert (fdchangemax >= fdchangecnt);	2835	assert (fdchangemax >= fdchangecnt);
2555	for (i = 0; i < fdchangecnt; ++i)	2836	for (i = 0; i < fdchangecnt; ++i)
2556	assert (("libev: negative fd in fdchanges", fdchanges [i] >= 0));	2837	assert (("libev: negative fd in fdchanges", fdchanges [i] >= 0));
2557		2838
2558	assert (anfdmax >= 0);	2839	assert (anfdmax >= 0);
2559	for (i = 0; i < anfdmax; ++i)	2840	for (i = 0; i < anfdmax; ++i)
		2841	{
		2842	int j = 0;
		2843
2560	for (w = anfds [i].head; w; w = w->next)	2844	for (w = w2 = anfds [i].head; w; w = w->next)
2561	{	2845	{
2562	verify_watcher (EV_A_ (W)w);	2846	verify_watcher (EV_A_ (W)w);
		2847
		2848	if (j++ & 1)
		2849	{
		2850	assert (("libev: io watcher list contains a loop", w != w2));
		2851	w2 = w2->next;
		2852	}
		2853
2563	assert (("libev: inactive fd watcher on anfd list", ev_active (w) == 1));	2854	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));	2855	assert (("libev: fd mismatch between watcher and anfd", ((ev_io *)w)->fd == i));
2565	}	2856	}
		2857	}
2566		2858
2567	assert (timermax >= timercnt);	2859	assert (timermax >= timercnt);
2568	verify_heap (EV_A_ timers, timercnt);	2860	verify_heap (EV_A_ timers, timercnt);
2569		2861
2570	#if EV_PERIODIC_ENABLE	2862	#if EV_PERIODIC_ENABLE
…		…
2651	}	2943	}
2652		2944
2653	void	2945	void
2654	ev_loop_fork (EV_P) EV_THROW	2946	ev_loop_fork (EV_P) EV_THROW
2655	{	2947	{
2656	postfork = 1; /* must be in line with ev_default_fork */	2948	postfork = 1;
2657	}	2949	}
2658		2950
2659	/*****************************************************************************/	2951	/*****************************************************************************/
2660		2952
2661	void	2953	void
…		…
2677	}	2969	}
2678		2970
2679	void noinline	2971	void noinline
2680	ev_invoke_pending (EV_P)	2972	ev_invoke_pending (EV_P)
2681	{	2973	{
2682	int pri;	2974	pendingpri = NUMPRI;
2683		2975
2684	for (pri = NUMPRI; pri--; )	2976	while (pendingpri) /* pendingpri possibly gets modified in the inner loop */
		2977	{
		2978	--pendingpri;
		2979
2685	while (pendingcnt [pri])	2980	while (pendingcnt [pendingpri])
2686	{	2981	{
2687	ANPENDING *p = pendings [pri] + --pendingcnt [pri];	2982	ANPENDING *p = pendings [pendingpri] + --pendingcnt [pendingpri];
2688		2983
2689	p->w->pending = 0;	2984	p->w->pending = 0;
2690	EV_CB_INVOKE (p->w, p->events);	2985	EV_CB_INVOKE (p->w, p->events);
2691	EV_FREQUENT_CHECK;	2986	EV_FREQUENT_CHECK;
2692	}	2987	}
		2988	}
2693	}	2989	}
2694		2990
2695	#if EV_IDLE_ENABLE	2991	#if EV_IDLE_ENABLE
2696	/* make idle watchers pending. this handles the "call-idle */	2992	/* make idle watchers pending. this handles the "call-idle */
2697	/* only when higher priorities are idle" logic */	2993	/* only when higher priorities are idle" logic */
…		…
2787	{	3083	{
2788	EV_FREQUENT_CHECK;	3084	EV_FREQUENT_CHECK;
2789		3085
2790	while (periodiccnt && ANHE_at (periodics [HEAP0]) < ev_rt_now)	3086	while (periodiccnt && ANHE_at (periodics [HEAP0]) < ev_rt_now)
2791	{	3087	{
2792	int feed_count = 0;
2793
2794	do	3088	do
2795	{	3089	{
2796	ev_periodic w = (ev_periodic )ANHE_w (periodics [HEAP0]);	3090	ev_periodic w = (ev_periodic )ANHE_w (periodics [HEAP0]);
2797		3091
2798	/assert (("libev: inactive timer on periodic heap detected", ev_is_active (w)));/	3092	/assert (("libev: inactive timer on periodic heap detected", ev_is_active (w)));/
…		…
3057	backend_poll (EV_A_ waittime);	3351	backend_poll (EV_A_ waittime);
3058	assert ((loop_done = EVBREAK_CANCEL, 1)); /* assert for side effect */	3352	assert ((loop_done = EVBREAK_CANCEL, 1)); /* assert for side effect */
3059		3353
3060	pipe_write_wanted = 0; /* just an optimisation, no fence needed */	3354	pipe_write_wanted = 0; /* just an optimisation, no fence needed */
3061		3355
		3356	ECB_MEMORY_FENCE_ACQUIRE;
3062	if (pipe_write_skipped)	3357	if (pipe_write_skipped)
3063	{	3358	{
3064	assert (("libev: pipe_w not active, but pipe not written", ev_is_active (&pipe_w)));	3359	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);	3360	ev_feed_event (EV_A_ &pipe_w, EV_CUSTOM);
3066	}	3361	}
…		…
3241	EV_FREQUENT_CHECK;	3536	EV_FREQUENT_CHECK;
3242		3537
3243	ev_start (EV_A_ (W)w, 1);	3538	ev_start (EV_A_ (W)w, 1);
3244	array_needsize (ANFD, anfds, anfdmax, fd + 1, array_init_zero);	3539	array_needsize (ANFD, anfds, anfdmax, fd + 1, array_init_zero);
3245	wlist_add (&anfds[fd].head, (WL)w);	3540	wlist_add (&anfds[fd].head, (WL)w);
		3541
		3542	/* common bug, apparently */
		3543	assert (("libev: ev_io_start called with corrupted watcher", ((WL)w)->next != (WL)w));
3246		3544
3247	fd_change (EV_A_ fd, w->events & EV__IOFDSET \| EV_ANFD_REIFY);	3545	fd_change (EV_A_ fd, w->events & EV__IOFDSET \| EV_ANFD_REIFY);
3248	w->events &= ~EV__IOFDSET;	3546	w->events &= ~EV__IOFDSET;
3249		3547
3250	EV_FREQUENT_CHECK;	3548	EV_FREQUENT_CHECK;
…		…
3441	#if EV_MULTIPLICITY	3739	#if EV_MULTIPLICITY
3442	assert (("libev: a signal must not be attached to two different loops",	3740	assert (("libev: a signal must not be attached to two different loops",
3443	!signals [w->signum - 1].loop \|\| signals [w->signum - 1].loop == loop));	3741	!signals [w->signum - 1].loop \|\| signals [w->signum - 1].loop == loop));
3444		3742
3445	signals [w->signum - 1].loop = EV_A;	3743	signals [w->signum - 1].loop = EV_A;
		3744	ECB_MEMORY_FENCE_RELEASE;
3446	#endif	3745	#endif
3447		3746
3448	EV_FREQUENT_CHECK;	3747	EV_FREQUENT_CHECK;
3449		3748
3450	#if EV_USE_SIGNALFD	3749	#if EV_USE_SIGNALFD
…		…
3605	# define EV_INOTIFY_BUFSIZE (sizeof (struct inotify_event) * 2 + NAME_MAX)	3904	# define EV_INOTIFY_BUFSIZE (sizeof (struct inotify_event) * 2 + NAME_MAX)
3606		3905
3607	static void noinline	3906	static void noinline
3608	infy_add (EV_P_ ev_stat *w)	3907	infy_add (EV_P_ ev_stat *w)
3609	{	3908	{
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);	3909	w->wd = inotify_add_watch (fs_fd, w->path,
		3910	IN_ATTRIB \| IN_DELETE_SELF \| IN_MOVE_SELF \| IN_MODIFY
		3911	\| IN_CREATE \| IN_DELETE \| IN_MOVED_FROM \| IN_MOVED_TO
		3912	\| IN_DONT_FOLLOW \| IN_MASK_ADD);
3611		3913
3612	if (w->wd >= 0)	3914	if (w->wd >= 0)
3613	{	3915	{
3614	struct statfs sfs;	3916	struct statfs sfs;
3615		3917
…		…
3619		3921
3620	if (!fs_2625)	3922	if (!fs_2625)
3621	w->timer.repeat = w->interval ? w->interval : DEF_STAT_INTERVAL;	3923	w->timer.repeat = w->interval ? w->interval : DEF_STAT_INTERVAL;
3622	else if (!statfs (w->path, &sfs)	3924	else if (!statfs (w->path, &sfs)
3623	&& (sfs.f_type == 0x1373 /* devfs */	3925	&& (sfs.f_type == 0x1373 /* devfs */
		3926	\|\| sfs.f_type == 0x4006 /* fat */
		3927	\|\| sfs.f_type == 0x4d44 /* msdos */
3624	\|\| sfs.f_type == 0xEF53 /* ext2/3 */	3928	\|\| sfs.f_type == 0xEF53 /* ext2/3 */
		3929	\|\| sfs.f_type == 0x72b6 /* jffs2 */
		3930	\|\| sfs.f_type == 0x858458f6 /* ramfs */
		3931	\|\| sfs.f_type == 0x5346544e /* ntfs */
3625	\|\| sfs.f_type == 0x3153464a /* jfs */	3932	\|\| sfs.f_type == 0x3153464a /* jfs */
		3933	\|\| sfs.f_type == 0x9123683e /* btrfs */
3626	\|\| sfs.f_type == 0x52654973 /* reiser3 */	3934	\|\| sfs.f_type == 0x52654973 /* reiser3 */
3627	\|\| sfs.f_type == 0x01021994 /* tempfs */	3935	\|\| sfs.f_type == 0x01021994 /* tmpfs */
3628	\|\| sfs.f_type == 0x58465342 /* xfs */))	3936	\|\| sfs.f_type == 0x58465342 /* xfs */))
3629	w->timer.repeat = 0.; /* filesystem is local, kernel new enough */	3937	w->timer.repeat = 0.; /* filesystem is local, kernel new enough */
3630	else	3938	else
3631	w->timer.repeat = w->interval ? w->interval : NFS_STAT_INTERVAL; /* remote, use reduced frequency */	3939	w->timer.repeat = w->interval ? w->interval : NFS_STAT_INTERVAL; /* remote, use reduced frequency */
3632	}	3940	}

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Comparing libev/ev.c (file contents): Revision 1.420 by root, Wed Apr 18 05:44:42 2012 UTC vs. Revision 1.453 by root, Thu Feb 28 00:33:25 2013 UTC

Diff Legend

Comparing libev/ev.c (file contents):
Revision 1.420 by root, Wed Apr 18 05:44:42 2012 UTC vs.
Revision 1.453 by root, Thu Feb 28 00:33:25 2013 UTC