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

Comparing libev/ev.c (file contents):
Revision 1.423 by root, Sun Apr 22 10:14:20 2012 UTC vs.
Revision 1.464 by root, Fri Mar 21 16:41:04 2014 UTC

…		…
1	/*	1	/*
2	* libev event processing core, watcher management	2	* libev event processing core, watcher management
3	*	3	*
4	* Copyright (c) 2007,2008,2009,2010,2011,2012 Marc Alexander Lehmann <libev@schmorp.de>	4	* Copyright (c) 2007,2008,2009,2010,2011,2012,2013 Marc Alexander Lehmann <libev@schmorp.de>
5	* All rights reserved.	5	* All rights reserved.
6	*	6	*
7	* Redistribution and use in source and binary forms, with or without modifica-	7	* Redistribution and use in source and binary forms, with or without modifica-
8	* tion, are permitted provided that the following conditions are met:	8	* tion, are permitted provided that the following conditions are met:
9	*	9	*
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
…		…
240	#elif defined SIGARRAYSIZE	241	#elif defined SIGARRAYSIZE
241	# define EV_NSIG (SIGARRAYSIZE) /* Assume ary[SIGARRAYSIZE] */	242	# define EV_NSIG (SIGARRAYSIZE) /* Assume ary[SIGARRAYSIZE] */
242	#elif defined _sys_nsig	243	#elif defined _sys_nsig
243	# define EV_NSIG (_sys_nsig) /* Solaris 2.5 */	244	# define EV_NSIG (_sys_nsig) /* Solaris 2.5 */
244	#else	245	#else
245	# error "unable to find value for NSIG, please report"	246	# define EV_NSIG (8 * sizeof (sigset_t) + 1)
246	/* to make it compile regardless, just remove the above line, */
247	/* but consider reporting it, too! :) */
248	# define EV_NSIG 65
249	#endif	247	#endif
250		248
251	#ifndef EV_USE_FLOOR	249	#ifndef EV_USE_FLOOR
252	# define EV_USE_FLOOR 0	250	# define EV_USE_FLOOR 0
253	#endif	251	#endif
254		252
255	#ifndef EV_USE_CLOCK_SYSCALL	253	#ifndef EV_USE_CLOCK_SYSCALL
256	# if __linux && __GLIBC__ >= 2	254	# if __linux && __GLIBC__ == 2 && __GLIBC_MINOR__ < 17
257	# define EV_USE_CLOCK_SYSCALL EV_FEATURE_OS	255	# define EV_USE_CLOCK_SYSCALL EV_FEATURE_OS
258	# else	256	# else
259	# define EV_USE_CLOCK_SYSCALL 0	257	# define EV_USE_CLOCK_SYSCALL 0
260	# endif	258	# endif
261	#endif	259	#endif
…		…
354	# define EV_USE_4HEAP EV_FEATURE_DATA	352	# define EV_USE_4HEAP EV_FEATURE_DATA
355	#endif	353	#endif
356		354
357	#ifndef EV_HEAP_CACHE_AT	355	#ifndef EV_HEAP_CACHE_AT
358	# define EV_HEAP_CACHE_AT EV_FEATURE_DATA	356	# define EV_HEAP_CACHE_AT EV_FEATURE_DATA
		357	#endif
		358
		359	#ifdef ANDROID
		360	/* supposedly, android doesn't typedef fd_mask */
		361	# undef EV_USE_SELECT
		362	# define EV_USE_SELECT 0
		363	/* supposedly, we need to include syscall.h, not sys/syscall.h, so just disable */
		364	# undef EV_USE_CLOCK_SYSCALL
		365	# define EV_USE_CLOCK_SYSCALL 0
		366	#endif
		367
		368	/* aix's poll.h seems to cause lots of trouble */
		369	#ifdef _AIX
		370	/* AIX has a completely broken poll.h header */
		371	# undef EV_USE_POLL
		372	# define EV_USE_POLL 0
359	#endif	373	#endif
360		374
361	/* on linux, we can use a (slow) syscall to avoid a dependency on pthread, */	375	/* 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. */	376	/* which makes programs even slower. might work on other unices, too. */
363	#if EV_USE_CLOCK_SYSCALL	377	#if EV_USE_CLOCK_SYSCALL
…		…
372	# endif	386	# endif
373	#endif	387	#endif
374		388
375	/* this block fixes any misconfiguration where we know we run into trouble otherwise */	389	/* this block fixes any misconfiguration where we know we run into trouble otherwise */
376		390
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	391	#ifndef CLOCK_MONOTONIC
384	# undef EV_USE_MONOTONIC	392	# undef EV_USE_MONOTONIC
385	# define EV_USE_MONOTONIC 0	393	# define EV_USE_MONOTONIC 0
386	#endif	394	#endif
387		395
…		…
408	/* some very old inotify.h headers don't have IN_DONT_FOLLOW */	416	/* some very old inotify.h headers don't have IN_DONT_FOLLOW */
409	# ifndef IN_DONT_FOLLOW	417	# ifndef IN_DONT_FOLLOW
410	# undef EV_USE_INOTIFY	418	# undef EV_USE_INOTIFY
411	# define EV_USE_INOTIFY 0	419	# define EV_USE_INOTIFY 0
412	# endif	420	# endif
413	#endif
414
415	#if EV_SELECT_IS_WINSOCKET
416	# include <winsock.h>
417	#endif	421	#endif
418		422
419	#if EV_USE_EVENTFD	423	#if EV_USE_EVENTFD
420	/* our minimum requirement is glibc 2.7 which has the stub, but not the header */	424	/* our minimum requirement is glibc 2.7 which has the stub, but not the header */
421	# include <stdint.h>	425	# include <stdint.h>
…		…
478	/* the following is ecb.h embedded into libev - use update_ev_c to update from an external copy */	482	/* the following is ecb.h embedded into libev - use update_ev_c to update from an external copy */
479	/* ECB.H BEGIN */	483	/* ECB.H BEGIN */
480	/*	484	/*
481	* libecb - http://software.schmorp.de/pkg/libecb	485	* libecb - http://software.schmorp.de/pkg/libecb
482	*	486	*
483	* Copyright (©) 2009-2012 Marc Alexander Lehmann <libecb@schmorp.de>	487	* Copyright (©) 2009-2014 Marc Alexander Lehmann <libecb@schmorp.de>
484	* Copyright (©) 2011 Emanuele Giaquinta	488	* Copyright (©) 2011 Emanuele Giaquinta
485	* All rights reserved.	489	* All rights reserved.
486	*	490	*
487	* Redistribution and use in source and binary forms, with or without modifica-	491	* Redistribution and use in source and binary forms, with or without modifica-
488	* tion, are permitted provided that the following conditions are met:	492	* tion, are permitted provided that the following conditions are met:
…		…
507	*/	511	*/
508		512
509	#ifndef ECB_H	513	#ifndef ECB_H
510	#define ECB_H	514	#define ECB_H
511		515
		516	/* 16 bits major, 16 bits minor */
		517	#define ECB_VERSION 0x00010003
		518
512	#ifdef _WIN32	519	#ifdef _WIN32
513	typedef signed char int8_t;	520	typedef signed char int8_t;
514	typedef unsigned char uint8_t;	521	typedef unsigned char uint8_t;
515	typedef signed short int16_t;	522	typedef signed short int16_t;
516	typedef unsigned short uint16_t;	523	typedef unsigned short uint16_t;
…		…
521	typedef unsigned long long uint64_t;	528	typedef unsigned long long uint64_t;
522	#else /* _MSC_VER \|\| __BORLANDC__ */	529	#else /* _MSC_VER \|\| __BORLANDC__ */
523	typedef signed __int64 int64_t;	530	typedef signed __int64 int64_t;
524	typedef unsigned __int64 uint64_t;	531	typedef unsigned __int64 uint64_t;
525	#endif	532	#endif
		533	#ifdef _WIN64
		534	#define ECB_PTRSIZE 8
		535	typedef uint64_t uintptr_t;
		536	typedef int64_t intptr_t;
		537	#else
		538	#define ECB_PTRSIZE 4
		539	typedef uint32_t uintptr_t;
		540	typedef int32_t intptr_t;
		541	#endif
526	#else	542	#else
527	#include <inttypes.h>	543	#include <inttypes.h>
		544	#if UINTMAX_MAX > 0xffffffffU
		545	#define ECB_PTRSIZE 8
		546	#else
		547	#define ECB_PTRSIZE 4
		548	#endif
		549	#endif
		550
		551	/* work around x32 idiocy by defining proper macros */
		552	#if __amd64 \|\| __x86_64 \|\| _M_AMD64 \|\| _M_X64
		553	#if _ILP32
		554	#define ECB_AMD64_X32 1
		555	#else
		556	#define ECB_AMD64 1
		557	#endif
528	#endif	558	#endif
529		559
530	/* many compilers define _GNUC_ to some versions but then only implement	560	/* many compilers define _GNUC_ to some versions but then only implement
531	* what their idiot authors think are the "more important" extensions,	561	* what their idiot authors think are the "more important" extensions,
532	* causing enormous grief in return for some better fake benchmark numbers.	562	* causing enormous grief in return for some better fake benchmark numbers.
…		…
540	#else	570	#else
541	#define ECB_GCC_VERSION(major,minor) (__GNUC__ > (major) \|\| (__GNUC__ == (major) && __GNUC_MINOR__ >= (minor)))	571	#define ECB_GCC_VERSION(major,minor) (__GNUC__ > (major) \|\| (__GNUC__ == (major) && __GNUC_MINOR__ >= (minor)))
542	#endif	572	#endif
543	#endif	573	#endif
544		574
		575	#define ECB_CPP (__cplusplus+0)
		576	#define ECB_CPP11 (__cplusplus >= 201103L)
		577
		578	#if ECB_CPP
		579	#define ECB_C 0
		580	#define ECB_STDC_VERSION 0
		581	#else
		582	#define ECB_C 1
		583	#define ECB_STDC_VERSION __STDC_VERSION__
		584	#endif
		585
		586	#define ECB_C99 (ECB_STDC_VERSION >= 199901L)
		587	#define ECB_C11 (ECB_STDC_VERSION >= 201112L)
		588
		589	#if ECB_CPP
		590	#define ECB_EXTERN_C extern "C"
		591	#define ECB_EXTERN_C_BEG ECB_EXTERN_C {
		592	#define ECB_EXTERN_C_END }
		593	#else
		594	#define ECB_EXTERN_C extern
		595	#define ECB_EXTERN_C_BEG
		596	#define ECB_EXTERN_C_END
		597	#endif
		598
545	/*****************************************************************************/	599	/*****************************************************************************/
546		600
547	/* ECB_NO_THREADS - ecb is not used by multiple threads, ever */	601	/* 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 */	602	/* ECB_NO_SMP - ecb might be used in multiple threads, but only on a single cpu */
549		603
550	#if ECB_NO_THREADS	604	#if ECB_NO_THREADS
551	# define ECB_NO_SMP 1	605	#define ECB_NO_SMP 1
552	#endif	606	#endif
553		607
554	#if ECB_NO_THREADS \|\| ECB_NO_SMP	608	#if ECB_NO_SMP
555	#define ECB_MEMORY_FENCE do { } while (0)	609	#define ECB_MEMORY_FENCE do { } while (0)
556	#endif	610	#endif
557		611
558	#ifndef ECB_MEMORY_FENCE	612	#ifndef ECB_MEMORY_FENCE
559	#if ECB_GCC_VERSION(2,5) \|\| defined __INTEL_COMPILER \|\| (__llvm__ && __GNUC__) \|\| __SUNPRO_C >= 0x5110 \|\| __SUNPRO_CC >= 0x5110	613	#if ECB_GCC_VERSION(2,5) \|\| defined __INTEL_COMPILER \|\| (__llvm__ && __GNUC__) \|\| __SUNPRO_C >= 0x5110 \|\| __SUNPRO_CC >= 0x5110
560	#if __i386 \|\| __i386__	614	#if __i386 \|\| __i386__
561	#define ECB_MEMORY_FENCE __asm__ __volatile__ ("lock; orb $0, -1(%%esp)" : : : "memory")	615	#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 */	616	#define ECB_MEMORY_FENCE_ACQUIRE __asm__ __volatile__ ("" : : : "memory")
563	#define ECB_MEMORY_FENCE_RELEASE do { } while (0) /* unlikely to change in future cpus */	617	#define ECB_MEMORY_FENCE_RELEASE __asm__ __volatile__ ("")
564	#elif __amd64 \|\| __amd64__ \|\| __x86_64 \|\| __x86_64__	618	#elif __amd64 \|\| __amd64__ \|\| __x86_64 \|\| __x86_64__
565	#define ECB_MEMORY_FENCE __asm__ __volatile__ ("mfence" : : : "memory")	619	#define ECB_MEMORY_FENCE __asm__ __volatile__ ("mfence" : : : "memory")
566	#define ECB_MEMORY_FENCE_ACQUIRE __asm__ __volatile__ ("lfence" : : : "memory")	620	#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 */	621	#define ECB_MEMORY_FENCE_RELEASE __asm__ __volatile__ ("")
568	#elif __powerpc__ \|\| __ppc__ \|\| __powerpc64__ \|\| __ppc64__	622	#elif __powerpc__ \|\| __ppc__ \|\| __powerpc64__ \|\| __ppc64__
569	#define ECB_MEMORY_FENCE __asm__ __volatile__ ("sync" : : : "memory")	623	#define ECB_MEMORY_FENCE __asm__ __volatile__ ("sync" : : : "memory")
570	#elif defined __ARM_ARCH_6__ \|\| defined __ARM_ARCH_6J__ \	624	#elif defined __ARM_ARCH_6__ \|\| defined __ARM_ARCH_6J__ \
571	\|\| defined __ARM_ARCH_6K__ \|\| defined __ARM_ARCH_6ZK__	625	\|\| 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")	626	#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__ \	627	#elif defined __ARM_ARCH_7__ \|\| defined __ARM_ARCH_7A__ \
574	\|\| defined __ARM_ARCH_7M__ \|\| defined __ARM_ARCH_7R__	628	\|\| defined __ARM_ARCH_7M__ \|\| defined __ARM_ARCH_7R__
575	#define ECB_MEMORY_FENCE __asm__ __volatile__ ("dmb" : : : "memory")	629	#define ECB_MEMORY_FENCE __asm__ __volatile__ ("dmb" : : : "memory")
		630	#elif __aarch64__
		631	#define ECB_MEMORY_FENCE __asm__ __volatile__ ("dmb ish" : : : "memory")
576	#elif __sparc \|\| __sparc__	632	#elif (__sparc \|\| __sparc__) && !__sparcv8
577	#define ECB_MEMORY_FENCE __asm__ __volatile__ ("membar #LoadStore \| #LoadLoad \| #StoreStore \| #StoreLoad \| " : : : "memory")	633	#define ECB_MEMORY_FENCE __asm__ __volatile__ ("membar #LoadStore \| #LoadLoad \| #StoreStore \| #StoreLoad" : : : "memory")
578	#define ECB_MEMORY_FENCE_ACQUIRE __asm__ __volatile__ ("membar #LoadStore \| #LoadLoad" : : : "memory")	634	#define ECB_MEMORY_FENCE_ACQUIRE __asm__ __volatile__ ("membar #LoadStore \| #LoadLoad" : : : "memory")
579	#define ECB_MEMORY_FENCE_RELEASE __asm__ __volatile__ ("membar #LoadStore \| #StoreStore")	635	#define ECB_MEMORY_FENCE_RELEASE __asm__ __volatile__ ("membar #LoadStore \| #StoreStore")
580	#elif defined __s390__ \|\| defined __s390x__	636	#elif defined __s390__ \|\| defined __s390x__
581	#define ECB_MEMORY_FENCE __asm__ __volatile__ ("bcr 15,0" : : : "memory")	637	#define ECB_MEMORY_FENCE __asm__ __volatile__ ("bcr 15,0" : : : "memory")
582	#elif defined __mips__	638	#elif defined __mips__
		639	/* GNU/Linux emulates sync on mips1 architectures, so we force its use */
		640	/* 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")	641	#define ECB_MEMORY_FENCE __asm__ __volatile__ (".set mips2; sync; .set mips0" : : : "memory")
584	#elif defined __alpha__	642	#elif defined __alpha__
585	#define ECB_MEMORY_FENCE __asm__ __volatile__ ("mb" : : : "memory")	643	#define ECB_MEMORY_FENCE __asm__ __volatile__ ("mb" : : : "memory")
		644	#elif defined __hppa__
		645	#define ECB_MEMORY_FENCE __asm__ __volatile__ ("" : : : "memory")
		646	#define ECB_MEMORY_FENCE_RELEASE __asm__ __volatile__ ("")
		647	#elif defined __ia64__
		648	#define ECB_MEMORY_FENCE __asm__ __volatile__ ("mf" : : : "memory")
		649	#elif defined __m68k__
		650	#define ECB_MEMORY_FENCE __asm__ __volatile__ ("" : : : "memory")
		651	#elif defined __m88k__
		652	#define ECB_MEMORY_FENCE __asm__ __volatile__ ("tb1 0,%%r0,128" : : : "memory")
		653	#elif defined __sh__
		654	#define ECB_MEMORY_FENCE __asm__ __volatile__ ("" : : : "memory")
586	#endif	655	#endif
587	#endif	656	#endif
588	#endif	657	#endif
589		658
590	#ifndef ECB_MEMORY_FENCE	659	#ifndef ECB_MEMORY_FENCE
		660	#if ECB_GCC_VERSION(4,7)
		661	/* see comment below (stdatomic.h) about the C11 memory model. */
		662	#define ECB_MEMORY_FENCE __atomic_thread_fence (__ATOMIC_SEQ_CST)
		663	#define ECB_MEMORY_FENCE_ACQUIRE __atomic_thread_fence (__ATOMIC_ACQUIRE)
		664	#define ECB_MEMORY_FENCE_RELEASE __atomic_thread_fence (__ATOMIC_RELEASE)
		665
		666	/* The __has_feature syntax from clang is so misdesigned that we cannot use it
		667	* without risking compile time errors with other compilers. We could
		668	* define our own ecb_clang_has_feature, but I just can't be bothered to work
		669	* around this shit time and again.
		670	* #elif defined __clang && __has_feature (cxx_atomic)
		671	* // see comment below (stdatomic.h) about the C11 memory model.
		672	* #define ECB_MEMORY_FENCE __c11_atomic_thread_fence (__ATOMIC_SEQ_CST)
		673	* #define ECB_MEMORY_FENCE_ACQUIRE __c11_atomic_thread_fence (__ATOMIC_ACQUIRE)
		674	* #define ECB_MEMORY_FENCE_RELEASE __c11_atomic_thread_fence (__ATOMIC_RELEASE)
		675	*/
		676
591	#if ECB_GCC_VERSION(4,4) \|\| defined __INTEL_COMPILER \|\| defined __clang__	677	#elif ECB_GCC_VERSION(4,4) \|\| defined __INTEL_COMPILER \|\| defined __clang__
592	#define ECB_MEMORY_FENCE __sync_synchronize ()	678	#define ECB_MEMORY_FENCE __sync_synchronize ()
593	/#define ECB_MEMORY_FENCE_ACQUIRE ({ char dummy = 0; __sync_lock_test_and_set (&dummy, 1); }) /	679	#elif _MSC_VER >= 1500 /* VC++ 2008 */
594	/#define ECB_MEMORY_FENCE_RELEASE ({ char dummy = 1; __sync_lock_release (&dummy ); }) /	680	/* apparently, microsoft broke all the memory barrier stuff in Visual Studio 2008... */
		681	#pragma intrinsic(_ReadBarrier,_WriteBarrier,_ReadWriteBarrier)
		682	#define ECB_MEMORY_FENCE _ReadWriteBarrier (); MemoryBarrier()
		683	#define ECB_MEMORY_FENCE_ACQUIRE _ReadWriteBarrier (); MemoryBarrier() /* according to msdn, _ReadBarrier is not a load fence */
		684	#define ECB_MEMORY_FENCE_RELEASE _WriteBarrier (); MemoryBarrier()
595	#elif _MSC_VER >= 1400 /* VC++ 2005 */	685	#elif _MSC_VER >= 1400 /* VC++ 2005 */
596	#pragma intrinsic(_ReadBarrier,_WriteBarrier,_ReadWriteBarrier)	686	#pragma intrinsic(_ReadBarrier,_WriteBarrier,_ReadWriteBarrier)
597	#define ECB_MEMORY_FENCE _ReadWriteBarrier ()	687	#define ECB_MEMORY_FENCE _ReadWriteBarrier ()
598	#define ECB_MEMORY_FENCE_ACQUIRE _ReadWriteBarrier () /* according to msdn, _ReadBarrier is not a load fence */	688	#define ECB_MEMORY_FENCE_ACQUIRE _ReadWriteBarrier () /* according to msdn, _ReadBarrier is not a load fence */
599	#define ECB_MEMORY_FENCE_RELEASE _WriteBarrier ()	689	#define ECB_MEMORY_FENCE_RELEASE _WriteBarrier ()
…		…
609	#define ECB_MEMORY_FENCE __sync ()	699	#define ECB_MEMORY_FENCE __sync ()
610	#endif	700	#endif
611	#endif	701	#endif
612		702
613	#ifndef ECB_MEMORY_FENCE	703	#ifndef ECB_MEMORY_FENCE
		704	#if ECB_C11 && !defined __STDC_NO_ATOMICS__
		705	/* we assume that these memory fences work on all variables/all memory accesses, */
		706	/* not just C11 atomics and atomic accesses */
		707	#include <stdatomic.h>
		708	/* Unfortunately, neither gcc 4.7 nor clang 3.1 generate any instructions for */
		709	/* any fence other than seq_cst, which isn't very efficient for us. */
		710	/* Why that is, we don't know - either the C11 memory model is quite useless */
		711	/* for most usages, or gcc and clang have a bug */
		712	/* I currently lean towards the latter, and inefficiently implement */
		713	/* all three of ecb's fences as a seq_cst fence */
		714	/* Update, gcc-4.8 generates mfence for all c++ fences, but nothing */
		715	/* for all __atomic_thread_fence's except seq_cst */
		716	#define ECB_MEMORY_FENCE atomic_thread_fence (memory_order_seq_cst)
		717	#endif
		718	#endif
		719
		720	#ifndef ECB_MEMORY_FENCE
614	#if !ECB_AVOID_PTHREADS	721	#if !ECB_AVOID_PTHREADS
615	/*	722	/*
616	* if you get undefined symbol references to pthread_mutex_lock,	723	* if you get undefined symbol references to pthread_mutex_lock,
617	* or failure to find pthread.h, then you should implement	724	* or failure to find pthread.h, then you should implement
618	* the ECB_MEMORY_FENCE operations for your cpu/compiler	725	* the ECB_MEMORY_FENCE operations for your cpu/compiler
…		…
636	#define ECB_MEMORY_FENCE_RELEASE ECB_MEMORY_FENCE	743	#define ECB_MEMORY_FENCE_RELEASE ECB_MEMORY_FENCE
637	#endif	744	#endif
638		745
639	/*****************************************************************************/	746	/*****************************************************************************/
640		747
641	#define ECB_C99 (__STDC_VERSION__ >= 199901L)
642
643	#if __cplusplus	748	#if __cplusplus
644	#define ecb_inline static inline	749	#define ecb_inline static inline
645	#elif ECB_GCC_VERSION(2,5)	750	#elif ECB_GCC_VERSION(2,5)
646	#define ecb_inline static __inline__	751	#define ecb_inline static __inline__
647	#elif ECB_C99	752	#elif ECB_C99
…		…
672	#define ecb_is_constant(expr) __builtin_constant_p (expr)	777	#define ecb_is_constant(expr) __builtin_constant_p (expr)
673	#define ecb_expect(expr,value) __builtin_expect ((expr),(value))	778	#define ecb_expect(expr,value) __builtin_expect ((expr),(value))
674	#define ecb_prefetch(addr,rw,locality) __builtin_prefetch (addr, rw, locality)	779	#define ecb_prefetch(addr,rw,locality) __builtin_prefetch (addr, rw, locality)
675	#else	780	#else
676	#define ecb_attribute(attrlist)	781	#define ecb_attribute(attrlist)
		782
		783	/* possible C11 impl for integral types
		784	typedef struct ecb_is_constant_struct ecb_is_constant_struct;
		785	#define ecb_is_constant(expr) _Generic ((1 ? (struct ecb_is_constant_struct )0 : (void )((expr) - (expr)), ecb_is_constant_struct : 0, default: 1)) /
		786
677	#define ecb_is_constant(expr) 0	787	#define ecb_is_constant(expr) 0
678	#define ecb_expect(expr,value) (expr)	788	#define ecb_expect(expr,value) (expr)
679	#define ecb_prefetch(addr,rw,locality)	789	#define ecb_prefetch(addr,rw,locality)
680	#endif	790	#endif
681		791
…		…
685	#elif ECB_GCC_VERSION(3,0)	795	#elif ECB_GCC_VERSION(3,0)
686	#define ecb_decltype(x) __typeof(x)	796	#define ecb_decltype(x) __typeof(x)
687	#endif	797	#endif
688		798
689	#define ecb_noinline ecb_attribute ((__noinline__))	799	#define ecb_noinline ecb_attribute ((__noinline__))
690	#define ecb_noreturn ecb_attribute ((__noreturn__))
691	#define ecb_unused ecb_attribute ((__unused__))	800	#define ecb_unused ecb_attribute ((__unused__))
692	#define ecb_const ecb_attribute ((__const__))	801	#define ecb_const ecb_attribute ((__const__))
693	#define ecb_pure ecb_attribute ((__pure__))	802	#define ecb_pure ecb_attribute ((__pure__))
		803
		804	#if ECB_C11
		805	#define ecb_noreturn _Noreturn
		806	#else
		807	#define ecb_noreturn ecb_attribute ((__noreturn__))
		808	#endif
694		809
695	#if ECB_GCC_VERSION(4,3)	810	#if ECB_GCC_VERSION(4,3)
696	#define ecb_artificial ecb_attribute ((__artificial__))	811	#define ecb_artificial ecb_attribute ((__artificial__))
697	#define ecb_hot ecb_attribute ((__hot__))	812	#define ecb_hot ecb_attribute ((__hot__))
698	#define ecb_cold ecb_attribute ((__cold__))	813	#define ecb_cold ecb_attribute ((__cold__))
…		…
789		904
790	return r + ecb_ld32 (x);	905	return r + ecb_ld32 (x);
791	}	906	}
792	#endif	907	#endif
793		908
		909	ecb_function_ ecb_bool ecb_is_pot32 (uint32_t x) ecb_const;
		910	ecb_function_ ecb_bool ecb_is_pot32 (uint32_t x) { return !(x & (x - 1)); }
		911	ecb_function_ ecb_bool ecb_is_pot64 (uint64_t x) ecb_const;
		912	ecb_function_ ecb_bool ecb_is_pot64 (uint64_t x) { return !(x & (x - 1)); }
		913
794	ecb_function_ uint8_t ecb_bitrev8 (uint8_t x) ecb_const;	914	ecb_function_ uint8_t ecb_bitrev8 (uint8_t x) ecb_const;
795	ecb_function_ uint8_t ecb_bitrev8 (uint8_t x)	915	ecb_function_ uint8_t ecb_bitrev8 (uint8_t x)
796	{	916	{
797	return ( (x * 0x0802U & 0x22110U)	917	return ( (x * 0x0802U & 0x22110U)
798	\| (x * 0x8020U & 0x88440U)) * 0x10101U >> 16;	918	\| (x * 0x8020U & 0x88440U)) * 0x10101U >> 16;
…		…
882	ecb_inline void ecb_unreachable (void) ecb_noreturn;	1002	ecb_inline void ecb_unreachable (void) ecb_noreturn;
883	ecb_inline void ecb_unreachable (void) { }	1003	ecb_inline void ecb_unreachable (void) { }
884	#endif	1004	#endif
885		1005
886	/* try to tell the compiler that some condition is definitely true */	1006	/* try to tell the compiler that some condition is definitely true */
887	#define ecb_assume(cond) do { if (!(cond)) ecb_unreachable (); } while (0)	1007	#define ecb_assume(cond) if (!(cond)) ecb_unreachable (); else 0
888		1008
889	ecb_inline unsigned char ecb_byteorder_helper (void) ecb_const;	1009	ecb_inline unsigned char ecb_byteorder_helper (void) ecb_const;
890	ecb_inline unsigned char	1010	ecb_inline unsigned char
891	ecb_byteorder_helper (void)	1011	ecb_byteorder_helper (void)
892	{	1012	{
893	const uint32_t u = 0x11223344;	1013	/* the union code still generates code under pressure in gcc, */
894	return (unsigned char )&u;	1014	/* but less than using pointers, and always seems to */
		1015	/* successfully return a constant. */
		1016	/* the reason why we have this horrible preprocessor mess */
		1017	/* is to avoid it in all cases, at least on common architectures */
		1018	/* or when using a recent enough gcc version (>= 4.6) */
		1019	#if __i386 \|\| __i386__ \|\| _M_X86 \|\| __amd64 \|\| __amd64__ \|\| _M_X64
		1020	return 0x44;
		1021	#elif __BYTE_ORDER__ && __BYTE_ORDER__ == __ORDER_LITTLE_ENDIAN__
		1022	return 0x44;
		1023	#elif __BYTE_ORDER__ && __BYTE_ORDER__ == __ORDER_BIG_ENDIAN__
		1024	return 0x11;
		1025	#else
		1026	union
		1027	{
		1028	uint32_t i;
		1029	uint8_t c;
		1030	} u = { 0x11223344 };
		1031	return u.c;
		1032	#endif
895	}	1033	}
896		1034
897	ecb_inline ecb_bool ecb_big_endian (void) ecb_const;	1035	ecb_inline ecb_bool ecb_big_endian (void) ecb_const;
898	ecb_inline ecb_bool ecb_big_endian (void) { return ecb_byteorder_helper () == 0x11; }	1036	ecb_inline ecb_bool ecb_big_endian (void) { return ecb_byteorder_helper () == 0x11; }
899	ecb_inline ecb_bool ecb_little_endian (void) ecb_const;	1037	ecb_inline ecb_bool ecb_little_endian (void) ecb_const;
…		…
930	}	1068	}
931	#else	1069	#else
932	#define ecb_array_length(name) (sizeof (name) / sizeof (name [0]))	1070	#define ecb_array_length(name) (sizeof (name) / sizeof (name [0]))
933	#endif	1071	#endif
934		1072
		1073	/*******************************************************************************/
		1074	/* floating point stuff, can be disabled by defining ECB_NO_LIBM */
		1075
		1076	/* basically, everything uses "ieee pure-endian" floating point numbers */
		1077	/* the only noteworthy exception is ancient armle, which uses order 43218765 */
		1078	#if 0 \
		1079	\|\| __i386 \|\| __i386__ \
		1080	\|\| __amd64 \|\| __amd64__ \|\| __x86_64 \|\| __x86_64__ \
		1081	\|\| __powerpc__ \|\| __ppc__ \|\| __powerpc64__ \|\| __ppc64__ \
		1082	\|\| defined __arm__ && defined __ARM_EABI__ \
		1083	\|\| defined __s390__ \|\| defined __s390x__ \
		1084	\|\| defined __mips__ \
		1085	\|\| defined __alpha__ \
		1086	\|\| defined __hppa__ \
		1087	\|\| defined __ia64__ \
		1088	\|\| defined __m68k__ \
		1089	\|\| defined __m88k__ \
		1090	\|\| defined __sh__ \
		1091	\|\| defined _M_IX86 \|\| defined _M_AMD64 \|\| defined _M_IA64 \
		1092	\|\| (defined __arm__ && (defined __ARM_EABI__ \|\| defined __EABI__ \|\| defined __VFP_FP__ \|\| defined _WIN32_WCE \|\| defined __ANDROID__))
		1093	#define ECB_STDFP 1
		1094	#include <string.h> /* for memcpy */
		1095	#else
		1096	#define ECB_STDFP 0
		1097	#endif
		1098
		1099	#ifndef ECB_NO_LIBM
		1100
		1101	#include <math.h> /* for frexp, ldexp, INFINITY, NAN */
		1102
		1103	/* only the oldest of old doesn't have this one. solaris. */
		1104	#ifdef INFINITY
		1105	#define ECB_INFINITY INFINITY
		1106	#else
		1107	#define ECB_INFINITY HUGE_VAL
		1108	#endif
		1109
		1110	#ifdef NAN
		1111	#define ECB_NAN NAN
		1112	#else
		1113	#define ECB_NAN ECB_INFINITY
		1114	#endif
		1115
		1116	/* converts an ieee half/binary16 to a float */
		1117	ecb_function_ float ecb_binary16_to_float (uint16_t x) ecb_const;
		1118	ecb_function_ float
		1119	ecb_binary16_to_float (uint16_t x)
		1120	{
		1121	int e = (x >> 10) & 0x1f;
		1122	int m = x & 0x3ff;
		1123	float r;
		1124
		1125	if (!e ) r = ldexpf (m , -24);
		1126	else if (e != 31) r = ldexpf (m + 0x400, e - 25);
		1127	else if (m ) r = ECB_NAN;
		1128	else r = ECB_INFINITY;
		1129
		1130	return x & 0x8000 ? -r : r;
		1131	}
		1132
		1133	/* convert a float to ieee single/binary32 */
		1134	ecb_function_ uint32_t ecb_float_to_binary32 (float x) ecb_const;
		1135	ecb_function_ uint32_t
		1136	ecb_float_to_binary32 (float x)
		1137	{
		1138	uint32_t r;
		1139
		1140	#if ECB_STDFP
		1141	memcpy (&r, &x, 4);
		1142	#else
		1143	/* slow emulation, works for anything but -0 */
		1144	uint32_t m;
		1145	int e;
		1146
		1147	if (x == 0e0f ) return 0x00000000U;
		1148	if (x > +3.40282346638528860e+38f) return 0x7f800000U;
		1149	if (x < -3.40282346638528860e+38f) return 0xff800000U;
		1150	if (x != x ) return 0x7fbfffffU;
		1151
		1152	m = frexpf (x, &e) * 0x1000000U;
		1153
		1154	r = m & 0x80000000U;
		1155
		1156	if (r)
		1157	m = -m;
		1158
		1159	if (e <= -126)
		1160	{
		1161	m &= 0xffffffU;
		1162	m >>= (-125 - e);
		1163	e = -126;
		1164	}
		1165
		1166	r \|= (e + 126) << 23;
		1167	r \|= m & 0x7fffffU;
		1168	#endif
		1169
		1170	return r;
		1171	}
		1172
		1173	/* converts an ieee single/binary32 to a float */
		1174	ecb_function_ float ecb_binary32_to_float (uint32_t x) ecb_const;
		1175	ecb_function_ float
		1176	ecb_binary32_to_float (uint32_t x)
		1177	{
		1178	float r;
		1179
		1180	#if ECB_STDFP
		1181	memcpy (&r, &x, 4);
		1182	#else
		1183	/* emulation, only works for normals and subnormals and +0 */
		1184	int neg = x >> 31;
		1185	int e = (x >> 23) & 0xffU;
		1186
		1187	x &= 0x7fffffU;
		1188
		1189	if (e)
		1190	x \|= 0x800000U;
		1191	else
		1192	e = 1;
		1193
		1194	/* we distrust ldexpf a bit and do the 2*-24 scaling by an extra multiply /
		1195	r = ldexpf (x * (0.5f / 0x800000U), e - 126);
		1196
		1197	r = neg ? -r : r;
		1198	#endif
		1199
		1200	return r;
		1201	}
		1202
		1203	/* convert a double to ieee double/binary64 */
		1204	ecb_function_ uint64_t ecb_double_to_binary64 (double x) ecb_const;
		1205	ecb_function_ uint64_t
		1206	ecb_double_to_binary64 (double x)
		1207	{
		1208	uint64_t r;
		1209
		1210	#if ECB_STDFP
		1211	memcpy (&r, &x, 8);
		1212	#else
		1213	/* slow emulation, works for anything but -0 */
		1214	uint64_t m;
		1215	int e;
		1216
		1217	if (x == 0e0 ) return 0x0000000000000000U;
		1218	if (x > +1.79769313486231470e+308) return 0x7ff0000000000000U;
		1219	if (x < -1.79769313486231470e+308) return 0xfff0000000000000U;
		1220	if (x != x ) return 0X7ff7ffffffffffffU;
		1221
		1222	m = frexp (x, &e) * 0x20000000000000U;
		1223
		1224	r = m & 0x8000000000000000;;
		1225
		1226	if (r)
		1227	m = -m;
		1228
		1229	if (e <= -1022)
		1230	{
		1231	m &= 0x1fffffffffffffU;
		1232	m >>= (-1021 - e);
		1233	e = -1022;
		1234	}
		1235
		1236	r \|= ((uint64_t)(e + 1022)) << 52;
		1237	r \|= m & 0xfffffffffffffU;
		1238	#endif
		1239
		1240	return r;
		1241	}
		1242
		1243	/* converts an ieee double/binary64 to a double */
		1244	ecb_function_ double ecb_binary64_to_double (uint64_t x) ecb_const;
		1245	ecb_function_ double
		1246	ecb_binary64_to_double (uint64_t x)
		1247	{
		1248	double r;
		1249
		1250	#if ECB_STDFP
		1251	memcpy (&r, &x, 8);
		1252	#else
		1253	/* emulation, only works for normals and subnormals and +0 */
		1254	int neg = x >> 63;
		1255	int e = (x >> 52) & 0x7ffU;
		1256
		1257	x &= 0xfffffffffffffU;
		1258
		1259	if (e)
		1260	x \|= 0x10000000000000U;
		1261	else
		1262	e = 1;
		1263
		1264	/* we distrust ldexp a bit and do the 2*-53 scaling by an extra multiply /
		1265	r = ldexp (x * (0.5 / 0x10000000000000U), e - 1022);
		1266
		1267	r = neg ? -r : r;
		1268	#endif
		1269
		1270	return r;
		1271	}
		1272
		1273	#endif
		1274
935	#endif	1275	#endif
936		1276
937	/* ECB.H END */	1277	/* ECB.H END */
938		1278
939	#if ECB_MEMORY_FENCE_NEEDS_PTHREADS	1279	#if ECB_MEMORY_FENCE_NEEDS_PTHREADS
…		…
1108	#endif	1448	#endif
1109		1449
1110	static void (syserr_cb)(const char msg) EV_THROW;	1450	static void (syserr_cb)(const char msg) EV_THROW;
1111		1451
1112	void ecb_cold	1452	void ecb_cold
1113	ev_set_syserr_cb (void (cb)(const char msg)) EV_THROW	1453	ev_set_syserr_cb (void (cb)(const char msg) EV_THROW) EV_THROW
1114	{	1454	{
1115	syserr_cb = cb;	1455	syserr_cb = cb;
1116	}	1456	}
1117		1457
1118	static void noinline ecb_cold	1458	static void noinline ecb_cold
…		…
1136	abort ();	1476	abort ();
1137	}	1477	}
1138	}	1478	}
1139		1479
1140	static void *	1480	static void *
1141	ev_realloc_emul (void *ptr, long size)	1481	ev_realloc_emul (void *ptr, long size) EV_THROW
1142	{	1482	{
1143	#if __GLIBC__
1144	return realloc (ptr, size);
1145	#else
1146	/* some systems, notably openbsd and darwin, fail to properly	1483	/* some systems, notably openbsd and darwin, fail to properly
1147	* implement realloc (x, 0) (as required by both ansi c-89 and	1484	* implement realloc (x, 0) (as required by both ansi c-89 and
1148	* the single unix specification, so work around them here.	1485	* the single unix specification, so work around them here.
		1486	* recently, also (at least) fedora and debian started breaking it,
		1487	* despite documenting it otherwise.
1149	*/	1488	*/
1150		1489
1151	if (size)	1490	if (size)
1152	return realloc (ptr, size);	1491	return realloc (ptr, size);
1153		1492
1154	free (ptr);	1493	free (ptr);
1155	return 0;	1494	return 0;
1156	#endif
1157	}	1495	}
1158		1496
1159	static void (alloc)(void *ptr, long size) EV_THROW = ev_realloc_emul;	1497	static void (alloc)(void *ptr, long size) EV_THROW = ev_realloc_emul;
1160		1498
1161	void ecb_cold	1499	void ecb_cold
1162	ev_set_allocator (void (cb)(void *ptr, long size)) EV_THROW	1500	ev_set_allocator (void (cb)(void *ptr, long size) EV_THROW) EV_THROW
1163	{	1501	{
1164	alloc = cb;	1502	alloc = cb;
1165	}	1503	}
1166		1504
1167	inline_speed void *	1505	inline_speed void *
…		…
1430	w_->pending = ++pendingcnt [pri];	1768	w_->pending = ++pendingcnt [pri];
1431	array_needsize (ANPENDING, pendings [pri], pendingmax [pri], w_->pending, EMPTY2);	1769	array_needsize (ANPENDING, pendings [pri], pendingmax [pri], w_->pending, EMPTY2);
1432	pendings [pri][w_->pending - 1].w = w_;	1770	pendings [pri][w_->pending - 1].w = w_;
1433	pendings [pri][w_->pending - 1].events = revents;	1771	pendings [pri][w_->pending - 1].events = revents;
1434	}	1772	}
		1773
		1774	pendingpri = NUMPRI - 1;
1435	}	1775	}
1436		1776
1437	inline_speed void	1777	inline_speed void
1438	feed_reverse (EV_P_ W w)	1778	feed_reverse (EV_P_ W w)
1439	{	1779	{
…		…
1814	static void noinline ecb_cold	2154	static void noinline ecb_cold
1815	evpipe_init (EV_P)	2155	evpipe_init (EV_P)
1816	{	2156	{
1817	if (!ev_is_active (&pipe_w))	2157	if (!ev_is_active (&pipe_w))
1818	{	2158	{
		2159	int fds [2];
		2160
1819	# if EV_USE_EVENTFD	2161	# if EV_USE_EVENTFD
		2162	fds [0] = -1;
1820	evfd = eventfd (0, EFD_NONBLOCK \| EFD_CLOEXEC);	2163	fds [1] = eventfd (0, EFD_NONBLOCK \| EFD_CLOEXEC);
1821	if (evfd < 0 && errno == EINVAL)	2164	if (fds [1] < 0 && errno == EINVAL)
1822	evfd = eventfd (0, 0);	2165	fds [1] = eventfd (0, 0);
1823		2166
1824	if (evfd >= 0)	2167	if (fds [1] < 0)
		2168	# endif
1825	{	2169	{
		2170	while (pipe (fds))
		2171	ev_syserr ("(libev) error creating signal/async pipe");
		2172
		2173	fd_intern (fds [0]);
		2174	}
		2175
1826	evpipe [0] = -1;	2176	evpipe [0] = fds [0];
1827	fd_intern (evfd); /* doing it twice doesn't hurt */	2177
1828	ev_io_set (&pipe_w, evfd, EV_READ);	2178	if (evpipe [1] < 0)
		2179	evpipe [1] = fds [1]; /* first call, set write fd */
		2180	else
		2181	{
		2182	/* on subsequent calls, do not change evpipe [1] */
		2183	/* so that evpipe_write can always rely on its value. */
		2184	/* this branch does not do anything sensible on windows, */
		2185	/* so must not be executed on windows */
		2186
		2187	dup2 (fds [1], evpipe [1]);
		2188	close (fds [1]);
		2189	}
		2190
		2191	fd_intern (evpipe [1]);
		2192
		2193	ev_io_set (&pipe_w, evpipe [0] < 0 ? evpipe [1] : evpipe [0], EV_READ);
		2194	ev_io_start (EV_A_ &pipe_w);
		2195	ev_unref (EV_A); /* watcher should not keep loop alive */
		2196	}
		2197	}
		2198
		2199	inline_speed void
		2200	evpipe_write (EV_P_ EV_ATOMIC_T *flag)
		2201	{
		2202	ECB_MEMORY_FENCE; /* push out the write before this function was called, acquire flag */
		2203
		2204	if (expect_true (*flag))
		2205	return;
		2206
		2207	*flag = 1;
		2208	ECB_MEMORY_FENCE_RELEASE; /* make sure flag is visible before the wakeup */
		2209
		2210	pipe_write_skipped = 1;
		2211
		2212	ECB_MEMORY_FENCE; /* make sure pipe_write_skipped is visible before we check pipe_write_wanted */
		2213
		2214	if (pipe_write_wanted)
		2215	{
		2216	int old_errno;
		2217
		2218	pipe_write_skipped = 0;
		2219	ECB_MEMORY_FENCE_RELEASE;
		2220
		2221	old_errno = errno; /* save errno because write will clobber it */
		2222
		2223	#if EV_USE_EVENTFD
		2224	if (evpipe [0] < 0)
		2225	{
		2226	uint64_t counter = 1;
		2227	write (evpipe [1], &counter, sizeof (uint64_t));
1829	}	2228	}
1830	else	2229	else
1831	# endif	2230	#endif
1832	{	2231	{
1833	while (pipe (evpipe))	2232	#ifdef _WIN32
1834	ev_syserr ("(libev) error creating signal/async pipe");	2233	WSABUF buf;
1835		2234	DWORD sent;
1836	fd_intern (evpipe [0]);	2235	buf.buf = &buf;
1837	fd_intern (evpipe [1]);	2236	buf.len = 1;
1838	ev_io_set (&pipe_w, evpipe [0], EV_READ);	2237	WSASend (EV_FD_TO_WIN32_HANDLE (evpipe [1]), &buf, 1, &sent, 0, 0, 0);
1839	}	2238	#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);	2239	write (evpipe [1], &(evpipe [1]), 1);
		2240	#endif
1885	}	2241	}
1886		2242
1887	errno = old_errno;	2243	errno = old_errno;
1888	}	2244	}
1889	}	2245	}
…		…
1896	int i;	2252	int i;
1897		2253
1898	if (revents & EV_READ)	2254	if (revents & EV_READ)
1899	{	2255	{
1900	#if EV_USE_EVENTFD	2256	#if EV_USE_EVENTFD
1901	if (evfd >= 0)	2257	if (evpipe [0] < 0)
1902	{	2258	{
1903	uint64_t counter;	2259	uint64_t counter;
1904	read (evfd, &counter, sizeof (uint64_t));	2260	read (evpipe [1], &counter, sizeof (uint64_t));
1905	}	2261	}
1906	else	2262	else
1907	#endif	2263	#endif
1908	{	2264	{
1909	char dummy;	2265	char dummy[4];
1910	/* see discussion in evpipe_write when you think this read should be recv in win32 */	2266	#ifdef _WIN32
		2267	WSABUF buf;
		2268	DWORD recvd;
		2269	DWORD flags = 0;
		2270	buf.buf = dummy;
		2271	buf.len = sizeof (dummy);
		2272	WSARecv (EV_FD_TO_WIN32_HANDLE (evpipe [0]), &buf, 1, &recvd, &flags, 0, 0);
		2273	#else
1911	read (evpipe [0], &dummy, 1);	2274	read (evpipe [0], &dummy, sizeof (dummy));
		2275	#endif
1912	}	2276	}
1913	}	2277	}
1914		2278
1915	pipe_write_skipped = 0;	2279	pipe_write_skipped = 0;
		2280
		2281	ECB_MEMORY_FENCE; /* push out skipped, acquire flags */
1916		2282
1917	#if EV_SIGNAL_ENABLE	2283	#if EV_SIGNAL_ENABLE
1918	if (sig_pending)	2284	if (sig_pending)
1919	{	2285	{
1920	sig_pending = 0;	2286	sig_pending = 0;
		2287
		2288	ECB_MEMORY_FENCE;
1921		2289
1922	for (i = EV_NSIG - 1; i--; )	2290	for (i = EV_NSIG - 1; i--; )
1923	if (expect_false (signals [i].pending))	2291	if (expect_false (signals [i].pending))
1924	ev_feed_signal_event (EV_A_ i + 1);	2292	ev_feed_signal_event (EV_A_ i + 1);
1925	}	2293	}
…		…
1927		2295
1928	#if EV_ASYNC_ENABLE	2296	#if EV_ASYNC_ENABLE
1929	if (async_pending)	2297	if (async_pending)
1930	{	2298	{
1931	async_pending = 0;	2299	async_pending = 0;
		2300
		2301	ECB_MEMORY_FENCE;
1932		2302
1933	for (i = asynccnt; i--; )	2303	for (i = asynccnt; i--; )
1934	if (asyncs [i]->sent)	2304	if (asyncs [i]->sent)
1935	{	2305	{
1936	asyncs [i]->sent = 0;	2306	asyncs [i]->sent = 0;
		2307	ECB_MEMORY_FENCE_RELEASE;
1937	ev_feed_event (EV_A_ asyncs [i], EV_ASYNC);	2308	ev_feed_event (EV_A_ asyncs [i], EV_ASYNC);
1938	}	2309	}
1939	}	2310	}
1940	#endif	2311	#endif
1941	}	2312	}
…		…
1944		2315
1945	void	2316	void
1946	ev_feed_signal (int signum) EV_THROW	2317	ev_feed_signal (int signum) EV_THROW
1947	{	2318	{
1948	#if EV_MULTIPLICITY	2319	#if EV_MULTIPLICITY
		2320	EV_P;
		2321	ECB_MEMORY_FENCE_ACQUIRE;
1949	EV_P = signals [signum - 1].loop;	2322	EV_A = signals [signum - 1].loop;
1950		2323
1951	if (!EV_A)	2324	if (!EV_A)
1952	return;	2325	return;
1953	#endif	2326	#endif
1954		2327
1955	if (!ev_active (&pipe_w))
1956	return;
1957
1958	signals [signum - 1].pending = 1;	2328	signals [signum - 1].pending = 1;
1959	evpipe_write (EV_A_ &sig_pending);	2329	evpipe_write (EV_A_ &sig_pending);
1960	}	2330	}
1961		2331
1962	static void	2332	static void
…		…
1972	void noinline	2342	void noinline
1973	ev_feed_signal_event (EV_P_ int signum) EV_THROW	2343	ev_feed_signal_event (EV_P_ int signum) EV_THROW
1974	{	2344	{
1975	WL w;	2345	WL w;
1976		2346
1977	if (expect_false (signum <= 0 \|\| signum > EV_NSIG))	2347	if (expect_false (signum <= 0 \|\| signum >= EV_NSIG))
1978	return;	2348	return;
1979		2349
1980	--signum;	2350	--signum;
1981		2351
1982	#if EV_MULTIPLICITY	2352	#if EV_MULTIPLICITY
…		…
1986	if (expect_false (signals [signum].loop != EV_A))	2356	if (expect_false (signals [signum].loop != EV_A))
1987	return;	2357	return;
1988	#endif	2358	#endif
1989		2359
1990	signals [signum].pending = 0;	2360	signals [signum].pending = 0;
		2361	ECB_MEMORY_FENCE_RELEASE;
1991		2362
1992	for (w = signals [signum].head; w; w = w->next)	2363	for (w = signals [signum].head; w; w = w->next)
1993	ev_feed_event (EV_A_ (W)w, EV_SIGNAL);	2364	ev_feed_event (EV_A_ (W)w, EV_SIGNAL);
1994	}	2365	}
1995		2366
…		…
2209	{	2580	{
2210	return userdata;	2581	return userdata;
2211	}	2582	}
2212		2583
2213	void	2584	void
2214	ev_set_invoke_pending_cb (EV_P_ void (*invoke_pending_cb)(EV_P)) EV_THROW	2585	ev_set_invoke_pending_cb (EV_P_ ev_loop_callback invoke_pending_cb) EV_THROW
2215	{	2586	{
2216	invoke_cb = invoke_pending_cb;	2587	invoke_cb = invoke_pending_cb;
2217	}	2588	}
2218		2589
2219	void	2590	void
2220	ev_set_loop_release_cb (EV_P_ void (release)(EV_P) EV_THROW, void (acquire)(EV_P) EV_THROW) EV_THROW	2591	ev_set_loop_release_cb (EV_P_ ev_loop_callback_nothrow release, ev_loop_callback_nothrow acquire) EV_THROW
2221	{	2592	{
2222	release_cb = release;	2593	release_cb = release;
2223	acquire_cb = acquire;	2594	acquire_cb = acquire;
2224	}	2595	}
2225	#endif	2596	#endif
…		…
2279	#if EV_ASYNC_ENABLE	2650	#if EV_ASYNC_ENABLE
2280	async_pending = 0;	2651	async_pending = 0;
2281	#endif	2652	#endif
2282	pipe_write_skipped = 0;	2653	pipe_write_skipped = 0;
2283	pipe_write_wanted = 0;	2654	pipe_write_wanted = 0;
		2655	evpipe [0] = -1;
		2656	evpipe [1] = -1;
2284	#if EV_USE_INOTIFY	2657	#if EV_USE_INOTIFY
2285	fs_fd = flags & EVFLAG_NOINOTIFY ? -1 : -2;	2658	fs_fd = flags & EVFLAG_NOINOTIFY ? -1 : -2;
2286	#endif	2659	#endif
2287	#if EV_USE_SIGNALFD	2660	#if EV_USE_SIGNALFD
2288	sigfd = flags & EVFLAG_SIGNALFD ? -2 : -1;	2661	sigfd = flags & EVFLAG_SIGNALFD ? -2 : -1;
…		…
2339	EV_INVOKE_PENDING;	2712	EV_INVOKE_PENDING;
2340	}	2713	}
2341	#endif	2714	#endif
2342		2715
2343	#if EV_CHILD_ENABLE	2716	#if EV_CHILD_ENABLE
2344	if (ev_is_active (&childev))	2717	if (ev_is_default_loop (EV_A) && ev_is_active (&childev))
2345	{	2718	{
2346	ev_ref (EV_A); /* child watcher */	2719	ev_ref (EV_A); /* child watcher */
2347	ev_signal_stop (EV_A_ &childev);	2720	ev_signal_stop (EV_A_ &childev);
2348	}	2721	}
2349	#endif	2722	#endif
…		…
2351	if (ev_is_active (&pipe_w))	2724	if (ev_is_active (&pipe_w))
2352	{	2725	{
2353	/ev_ref (EV_A);/	2726	/ev_ref (EV_A);/
2354	/ev_io_stop (EV_A_ &pipe_w);/	2727	/ev_io_stop (EV_A_ &pipe_w);/
2355		2728
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]);	2729	if (evpipe [0] >= 0) EV_WIN32_CLOSE_FD (evpipe [0]);
2364	EV_WIN32_CLOSE_FD (evpipe [1]);	2730	if (evpipe [1] >= 0) EV_WIN32_CLOSE_FD (evpipe [1]);
2365	}
2366	}	2731	}
2367		2732
2368	#if EV_USE_SIGNALFD	2733	#if EV_USE_SIGNALFD
2369	if (ev_is_active (&sigfd_w))	2734	if (ev_is_active (&sigfd_w))
2370	close (sigfd);	2735	close (sigfd);
…		…
2456	#endif	2821	#endif
2457	#if EV_USE_INOTIFY	2822	#if EV_USE_INOTIFY
2458	infy_fork (EV_A);	2823	infy_fork (EV_A);
2459	#endif	2824	#endif
2460		2825
		2826	#if EV_SIGNAL_ENABLE \|\| EV_ASYNC_ENABLE
2461	if (ev_is_active (&pipe_w))	2827	if (ev_is_active (&pipe_w))
2462	{	2828	{
2463	/* pipe_write_wanted must be false now, so modifying fd vars should be safe */	2829	/* pipe_write_wanted must be false now, so modifying fd vars should be safe */
2464		2830
2465	ev_ref (EV_A);	2831	ev_ref (EV_A);
2466	ev_io_stop (EV_A_ &pipe_w);	2832	ev_io_stop (EV_A_ &pipe_w);
2467		2833
2468	#if EV_USE_EVENTFD
2469	if (evfd >= 0)
2470	close (evfd);
2471	#endif
2472
2473	if (evpipe [0] >= 0)	2834	if (evpipe [0] >= 0)
2474	{
2475	EV_WIN32_CLOSE_FD (evpipe [0]);	2835	EV_WIN32_CLOSE_FD (evpipe [0]);
2476	EV_WIN32_CLOSE_FD (evpipe [1]);
2477	}
2478		2836
2479	#if EV_SIGNAL_ENABLE \|\| EV_ASYNC_ENABLE
2480	evpipe_init (EV_A);	2837	evpipe_init (EV_A);
2481	/* now iterate over everything, in case we missed something */	2838	/* iterate over everything, in case we missed something before */
2482	pipecb (EV_A_ &pipe_w, EV_READ);	2839	ev_feed_event (EV_A_ &pipe_w, EV_CUSTOM);
2483	#endif
2484	}	2840	}
		2841	#endif
2485		2842
2486	postfork = 0;	2843	postfork = 0;
2487	}	2844	}
2488		2845
2489	#if EV_MULTIPLICITY	2846	#if EV_MULTIPLICITY
…		…
2545	void ecb_cold	2902	void ecb_cold
2546	ev_verify (EV_P) EV_THROW	2903	ev_verify (EV_P) EV_THROW
2547	{	2904	{
2548	#if EV_VERIFY	2905	#if EV_VERIFY
2549	int i;	2906	int i;
2550	WL w;	2907	WL w, w2;
2551		2908
2552	assert (activecnt >= -1);	2909	assert (activecnt >= -1);
2553		2910
2554	assert (fdchangemax >= fdchangecnt);	2911	assert (fdchangemax >= fdchangecnt);
2555	for (i = 0; i < fdchangecnt; ++i)	2912	for (i = 0; i < fdchangecnt; ++i)
2556	assert (("libev: negative fd in fdchanges", fdchanges [i] >= 0));	2913	assert (("libev: negative fd in fdchanges", fdchanges [i] >= 0));
2557		2914
2558	assert (anfdmax >= 0);	2915	assert (anfdmax >= 0);
2559	for (i = 0; i < anfdmax; ++i)	2916	for (i = 0; i < anfdmax; ++i)
		2917	{
		2918	int j = 0;
		2919
2560	for (w = anfds [i].head; w; w = w->next)	2920	for (w = w2 = anfds [i].head; w; w = w->next)
2561	{	2921	{
2562	verify_watcher (EV_A_ (W)w);	2922	verify_watcher (EV_A_ (W)w);
		2923
		2924	if (j++ & 1)
		2925	{
		2926	assert (("libev: io watcher list contains a loop", w != w2));
		2927	w2 = w2->next;
		2928	}
		2929
2563	assert (("libev: inactive fd watcher on anfd list", ev_active (w) == 1));	2930	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));	2931	assert (("libev: fd mismatch between watcher and anfd", ((ev_io *)w)->fd == i));
2565	}	2932	}
		2933	}
2566		2934
2567	assert (timermax >= timercnt);	2935	assert (timermax >= timercnt);
2568	verify_heap (EV_A_ timers, timercnt);	2936	verify_heap (EV_A_ timers, timercnt);
2569		2937
2570	#if EV_PERIODIC_ENABLE	2938	#if EV_PERIODIC_ENABLE
…		…
2651	}	3019	}
2652		3020
2653	void	3021	void
2654	ev_loop_fork (EV_P) EV_THROW	3022	ev_loop_fork (EV_P) EV_THROW
2655	{	3023	{
2656	postfork = 1; /* must be in line with ev_default_fork */	3024	postfork = 1;
2657	}	3025	}
2658		3026
2659	/*****************************************************************************/	3027	/*****************************************************************************/
2660		3028
2661	void	3029	void
…		…
2677	}	3045	}
2678		3046
2679	void noinline	3047	void noinline
2680	ev_invoke_pending (EV_P)	3048	ev_invoke_pending (EV_P)
2681	{	3049	{
2682	int pri;	3050	pendingpri = NUMPRI;
2683		3051
2684	for (pri = NUMPRI; pri--; )	3052	while (pendingpri) /* pendingpri possibly gets modified in the inner loop */
		3053	{
		3054	--pendingpri;
		3055
2685	while (pendingcnt [pri])	3056	while (pendingcnt [pendingpri])
2686	{	3057	{
2687	ANPENDING *p = pendings [pri] + --pendingcnt [pri];	3058	ANPENDING *p = pendings [pendingpri] + --pendingcnt [pendingpri];
2688		3059
2689	p->w->pending = 0;	3060	p->w->pending = 0;
2690	EV_CB_INVOKE (p->w, p->events);	3061	EV_CB_INVOKE (p->w, p->events);
2691	EV_FREQUENT_CHECK;	3062	EV_FREQUENT_CHECK;
2692	}	3063	}
		3064	}
2693	}	3065	}
2694		3066
2695	#if EV_IDLE_ENABLE	3067	#if EV_IDLE_ENABLE
2696	/* make idle watchers pending. this handles the "call-idle */	3068	/* make idle watchers pending. this handles the "call-idle */
2697	/* only when higher priorities are idle" logic */	3069	/* only when higher priorities are idle" logic */
…		…
2787	{	3159	{
2788	EV_FREQUENT_CHECK;	3160	EV_FREQUENT_CHECK;
2789		3161
2790	while (periodiccnt && ANHE_at (periodics [HEAP0]) < ev_rt_now)	3162	while (periodiccnt && ANHE_at (periodics [HEAP0]) < ev_rt_now)
2791	{	3163	{
2792	int feed_count = 0;
2793
2794	do	3164	do
2795	{	3165	{
2796	ev_periodic w = (ev_periodic )ANHE_w (periodics [HEAP0]);	3166	ev_periodic w = (ev_periodic )ANHE_w (periodics [HEAP0]);
2797		3167
2798	/assert (("libev: inactive timer on periodic heap detected", ev_is_active (w)));/	3168	/assert (("libev: inactive timer on periodic heap detected", ev_is_active (w)));/
…		…
3057	backend_poll (EV_A_ waittime);	3427	backend_poll (EV_A_ waittime);
3058	assert ((loop_done = EVBREAK_CANCEL, 1)); /* assert for side effect */	3428	assert ((loop_done = EVBREAK_CANCEL, 1)); /* assert for side effect */
3059		3429
3060	pipe_write_wanted = 0; /* just an optimisation, no fence needed */	3430	pipe_write_wanted = 0; /* just an optimisation, no fence needed */
3061		3431
		3432	ECB_MEMORY_FENCE_ACQUIRE;
3062	if (pipe_write_skipped)	3433	if (pipe_write_skipped)
3063	{	3434	{
3064	assert (("libev: pipe_w not active, but pipe not written", ev_is_active (&pipe_w)));	3435	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);	3436	ev_feed_event (EV_A_ &pipe_w, EV_CUSTOM);
3066	}	3437	}
…		…
3241	EV_FREQUENT_CHECK;	3612	EV_FREQUENT_CHECK;
3242		3613
3243	ev_start (EV_A_ (W)w, 1);	3614	ev_start (EV_A_ (W)w, 1);
3244	array_needsize (ANFD, anfds, anfdmax, fd + 1, array_init_zero);	3615	array_needsize (ANFD, anfds, anfdmax, fd + 1, array_init_zero);
3245	wlist_add (&anfds[fd].head, (WL)w);	3616	wlist_add (&anfds[fd].head, (WL)w);
		3617
		3618	/* common bug, apparently */
		3619	assert (("libev: ev_io_start called with corrupted watcher", ((WL)w)->next != (WL)w));
3246		3620
3247	fd_change (EV_A_ fd, w->events & EV__IOFDSET \| EV_ANFD_REIFY);	3621	fd_change (EV_A_ fd, w->events & EV__IOFDSET \| EV_ANFD_REIFY);
3248	w->events &= ~EV__IOFDSET;	3622	w->events &= ~EV__IOFDSET;
3249		3623
3250	EV_FREQUENT_CHECK;	3624	EV_FREQUENT_CHECK;
…		…
3441	#if EV_MULTIPLICITY	3815	#if EV_MULTIPLICITY
3442	assert (("libev: a signal must not be attached to two different loops",	3816	assert (("libev: a signal must not be attached to two different loops",
3443	!signals [w->signum - 1].loop \|\| signals [w->signum - 1].loop == loop));	3817	!signals [w->signum - 1].loop \|\| signals [w->signum - 1].loop == loop));
3444		3818
3445	signals [w->signum - 1].loop = EV_A;	3819	signals [w->signum - 1].loop = EV_A;
		3820	ECB_MEMORY_FENCE_RELEASE;
3446	#endif	3821	#endif
3447		3822
3448	EV_FREQUENT_CHECK;	3823	EV_FREQUENT_CHECK;
3449		3824
3450	#if EV_USE_SIGNALFD	3825	#if EV_USE_SIGNALFD
…		…
3605	# define EV_INOTIFY_BUFSIZE (sizeof (struct inotify_event) * 2 + NAME_MAX)	3980	# define EV_INOTIFY_BUFSIZE (sizeof (struct inotify_event) * 2 + NAME_MAX)
3606		3981
3607	static void noinline	3982	static void noinline
3608	infy_add (EV_P_ ev_stat *w)	3983	infy_add (EV_P_ ev_stat *w)
3609	{	3984	{
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);	3985	w->wd = inotify_add_watch (fs_fd, w->path,
		3986	IN_ATTRIB \| IN_DELETE_SELF \| IN_MOVE_SELF \| IN_MODIFY
		3987	\| IN_CREATE \| IN_DELETE \| IN_MOVED_FROM \| IN_MOVED_TO
		3988	\| IN_DONT_FOLLOW \| IN_MASK_ADD);
3611		3989
3612	if (w->wd >= 0)	3990	if (w->wd >= 0)
3613	{	3991	{
3614	struct statfs sfs;	3992	struct statfs sfs;
3615		3993
…		…
3619		3997
3620	if (!fs_2625)	3998	if (!fs_2625)
3621	w->timer.repeat = w->interval ? w->interval : DEF_STAT_INTERVAL;	3999	w->timer.repeat = w->interval ? w->interval : DEF_STAT_INTERVAL;
3622	else if (!statfs (w->path, &sfs)	4000	else if (!statfs (w->path, &sfs)
3623	&& (sfs.f_type == 0x1373 /* devfs */	4001	&& (sfs.f_type == 0x1373 /* devfs */
		4002	\|\| sfs.f_type == 0x4006 /* fat */
		4003	\|\| sfs.f_type == 0x4d44 /* msdos */
3624	\|\| sfs.f_type == 0xEF53 /* ext2/3 */	4004	\|\| sfs.f_type == 0xEF53 /* ext2/3 */
		4005	\|\| sfs.f_type == 0x72b6 /* jffs2 */
		4006	\|\| sfs.f_type == 0x858458f6 /* ramfs */
		4007	\|\| sfs.f_type == 0x5346544e /* ntfs */
3625	\|\| sfs.f_type == 0x3153464a /* jfs */	4008	\|\| sfs.f_type == 0x3153464a /* jfs */
		4009	\|\| sfs.f_type == 0x9123683e /* btrfs */
3626	\|\| sfs.f_type == 0x52654973 /* reiser3 */	4010	\|\| sfs.f_type == 0x52654973 /* reiser3 */
3627	\|\| sfs.f_type == 0x01021994 /* tempfs */	4011	\|\| sfs.f_type == 0x01021994 /* tmpfs */
3628	\|\| sfs.f_type == 0x58465342 /* xfs */))	4012	\|\| sfs.f_type == 0x58465342 /* xfs */))
3629	w->timer.repeat = 0.; /* filesystem is local, kernel new enough */	4013	w->timer.repeat = 0.; /* filesystem is local, kernel new enough */
3630	else	4014	else
3631	w->timer.repeat = w->interval ? w->interval : NFS_STAT_INTERVAL; /* remote, use reduced frequency */	4015	w->timer.repeat = w->interval ? w->interval : NFS_STAT_INTERVAL; /* remote, use reduced frequency */
3632	}	4016	}

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Comparing libev/ev.c (file contents): Revision 1.423 by root, Sun Apr 22 10:14:20 2012 UTC vs. Revision 1.464 by root, Fri Mar 21 16:41:04 2014 UTC

Diff Legend

Comparing libev/ev.c (file contents):
Revision 1.423 by root, Sun Apr 22 10:14:20 2012 UTC vs.
Revision 1.464 by root, Fri Mar 21 16:41:04 2014 UTC