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Comparing libev/ev.c (file contents):
Revision 1.379 by root, Sun Jun 19 17:55:13 2011 UTC vs.
Revision 1.453 by root, Thu Feb 28 00:33:25 2013 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 Marc Alexander Lehmann <libev@schmorp.de>	4	* Copyright (c) 2007,2008,2009,2010,2011,2012 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	*
…		…
59	# endif	59	# endif
60	# ifndef EV_USE_MONOTONIC	60	# ifndef EV_USE_MONOTONIC
61	# define EV_USE_MONOTONIC 1	61	# define EV_USE_MONOTONIC 1
62	# endif	62	# endif
63	# endif	63	# endif
64	# elif !defined(EV_USE_CLOCK_SYSCALL)	64	# elif !defined EV_USE_CLOCK_SYSCALL
65	# define EV_USE_CLOCK_SYSCALL 0	65	# define EV_USE_CLOCK_SYSCALL 0
66	# endif	66	# endif
67		67
68	# if HAVE_CLOCK_GETTIME	68	# if HAVE_CLOCK_GETTIME
69	# ifndef EV_USE_MONOTONIC	69	# ifndef EV_USE_MONOTONIC
…		…
183	# include EV_H	183	# include EV_H
184	#else	184	#else
185	# include "ev.h"	185	# include "ev.h"
186	#endif	186	#endif
187		187
188	EV_CPP(extern "C" {)	188	#if EV_NO_THREADS
		189	# undef EV_NO_SMP
		190	# define EV_NO_SMP 1
		191	# undef ECB_NO_THREADS
		192	# define ECB_NO_THREADS 1
		193	#endif
		194	#if EV_NO_SMP
		195	# undef EV_NO_SMP
		196	# define ECB_NO_SMP 1
		197	#endif
189		198
190	#ifndef _WIN32	199	#ifndef _WIN32
191	# include <sys/time.h>	200	# include <sys/time.h>
192	# include <sys/wait.h>	201	# include <sys/wait.h>
193	# include <unistd.h>	202	# include <unistd.h>
194	#else	203	#else
195	# include <io.h>	204	# include <io.h>
196	# define WIN32_LEAN_AND_MEAN	205	# define WIN32_LEAN_AND_MEAN
		206	# include <winsock2.h>
197	# include <windows.h>	207	# include <windows.h>
198	# ifndef EV_SELECT_IS_WINSOCKET	208	# ifndef EV_SELECT_IS_WINSOCKET
199	# define EV_SELECT_IS_WINSOCKET 1	209	# define EV_SELECT_IS_WINSOCKET 1
200	# endif	210	# endif
201	# undef EV_AVOID_STDIO	211	# undef EV_AVOID_STDIO
…		…
210	#define _DARWIN_UNLIMITED_SELECT 1	220	#define _DARWIN_UNLIMITED_SELECT 1
211		221
212	/* this block tries to deduce configuration from header-defined symbols and defaults */	222	/* this block tries to deduce configuration from header-defined symbols and defaults */
213		223
214	/* try to deduce the maximum number of signals on this platform */	224	/* try to deduce the maximum number of signals on this platform */
215	#if defined (EV_NSIG)	225	#if defined EV_NSIG
216	/* use what's provided */	226	/* use what's provided */
217	#elif defined (NSIG)	227	#elif defined NSIG
218	# define EV_NSIG (NSIG)	228	# define EV_NSIG (NSIG)
219	#elif defined(_NSIG)	229	#elif defined _NSIG
220	# define EV_NSIG (_NSIG)	230	# define EV_NSIG (_NSIG)
221	#elif defined (SIGMAX)	231	#elif defined SIGMAX
222	# define EV_NSIG (SIGMAX+1)	232	# define EV_NSIG (SIGMAX+1)
223	#elif defined (SIG_MAX)	233	#elif defined SIG_MAX
224	# define EV_NSIG (SIG_MAX+1)	234	# define EV_NSIG (SIG_MAX+1)
225	#elif defined (_SIG_MAX)	235	#elif defined _SIG_MAX
226	# define EV_NSIG (_SIG_MAX+1)	236	# define EV_NSIG (_SIG_MAX+1)
227	#elif defined (MAXSIG)	237	#elif defined MAXSIG
228	# define EV_NSIG (MAXSIG+1)	238	# define EV_NSIG (MAXSIG+1)
229	#elif defined (MAX_SIG)	239	#elif defined MAX_SIG
230	# define EV_NSIG (MAX_SIG+1)	240	# define EV_NSIG (MAX_SIG+1)
231	#elif defined (SIGARRAYSIZE)	241	#elif defined SIGARRAYSIZE
232	# define EV_NSIG (SIGARRAYSIZE) /* Assume ary[SIGARRAYSIZE] */	242	# define EV_NSIG (SIGARRAYSIZE) /* Assume ary[SIGARRAYSIZE] */
233	#elif defined (_sys_nsig)	243	#elif defined _sys_nsig
234	# define EV_NSIG (_sys_nsig) /* Solaris 2.5 */	244	# define EV_NSIG (_sys_nsig) /* Solaris 2.5 */
235	#else	245	#else
236	# error "unable to find value for NSIG, please report"	246	# error "unable to find value for NSIG, please report"
237	/* to make it compile regardless, just remove the above line, */	247	/* to make it compile regardless, just remove the above line, */
238	/* but consider reporting it, too! :) */	248	/* but consider reporting it, too! :) */
…		…
250	# define EV_USE_CLOCK_SYSCALL 0	260	# define EV_USE_CLOCK_SYSCALL 0
251	# endif	261	# endif
252	#endif	262	#endif
253		263
254	#ifndef EV_USE_MONOTONIC	264	#ifndef EV_USE_MONOTONIC
255	# if defined (_POSIX_MONOTONIC_CLOCK) && _POSIX_MONOTONIC_CLOCK >= 0	265	# if defined _POSIX_MONOTONIC_CLOCK && _POSIX_MONOTONIC_CLOCK >= 0
256	# define EV_USE_MONOTONIC EV_FEATURE_OS	266	# define EV_USE_MONOTONIC EV_FEATURE_OS
257	# else	267	# else
258	# define EV_USE_MONOTONIC 0	268	# define EV_USE_MONOTONIC 0
259	# endif	269	# endif
260	#endif	270	#endif
…		…
347		357
348	#ifndef EV_HEAP_CACHE_AT	358	#ifndef EV_HEAP_CACHE_AT
349	# define EV_HEAP_CACHE_AT EV_FEATURE_DATA	359	# define EV_HEAP_CACHE_AT EV_FEATURE_DATA
350	#endif	360	#endif
351		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
352	/* 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, */
353	/* which makes programs even slower. might work on other unices, too. */	379	/* which makes programs even slower. might work on other unices, too. */
354	#if EV_USE_CLOCK_SYSCALL	380	#if EV_USE_CLOCK_SYSCALL
355	# include <syscall.h>	381	# include <sys/syscall.h>
356	# ifdef SYS_clock_gettime	382	# ifdef SYS_clock_gettime
357	# define clock_gettime(id, ts) syscall (SYS_clock_gettime, (id), (ts))	383	# define clock_gettime(id, ts) syscall (SYS_clock_gettime, (id), (ts))
358	# undef EV_USE_MONOTONIC	384	# undef EV_USE_MONOTONIC
359	# define EV_USE_MONOTONIC 1	385	# define EV_USE_MONOTONIC 1
360	# else	386	# else
…		…
363	# endif	389	# endif
364	#endif	390	#endif
365		391
366	/* 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 */
367		393
368	#ifdef _AIX
369	/* AIX has a completely broken poll.h header */
370	# undef EV_USE_POLL
371	# define EV_USE_POLL 0
372	#endif
373
374	#ifndef CLOCK_MONOTONIC	394	#ifndef CLOCK_MONOTONIC
375	# undef EV_USE_MONOTONIC	395	# undef EV_USE_MONOTONIC
376	# define EV_USE_MONOTONIC 0	396	# define EV_USE_MONOTONIC 0
377	#endif	397	#endif
378		398
…		…
386	# define EV_USE_INOTIFY 0	406	# define EV_USE_INOTIFY 0
387	#endif	407	#endif
388		408
389	#if !EV_USE_NANOSLEEP	409	#if !EV_USE_NANOSLEEP
390	/* hp-ux has it in sys/time.h, which we unconditionally include above */	410	/* hp-ux has it in sys/time.h, which we unconditionally include above */
391	# if !defined(_WIN32) && !defined(__hpux)	411	# if !defined _WIN32 && !defined __hpux
392	# include <sys/select.h>	412	# include <sys/select.h>
393	# endif	413	# endif
394	#endif	414	#endif
395		415
396	#if EV_USE_INOTIFY	416	#if EV_USE_INOTIFY
…		…
399	/* 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 */
400	# ifndef IN_DONT_FOLLOW	420	# ifndef IN_DONT_FOLLOW
401	# undef EV_USE_INOTIFY	421	# undef EV_USE_INOTIFY
402	# define EV_USE_INOTIFY 0	422	# define EV_USE_INOTIFY 0
403	# endif	423	# endif
404	#endif
405
406	#if EV_SELECT_IS_WINSOCKET
407	# include <winsock.h>
408	#endif	424	#endif
409		425
410	#if EV_USE_EVENTFD	426	#if EV_USE_EVENTFD
411	/* 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 */
412	# include <stdint.h>	428	# include <stdint.h>
…		…
464	#define MAX_BLOCKTIME 59.743 /* never wait longer than this time (to detect time jumps) */	480	#define MAX_BLOCKTIME 59.743 /* never wait longer than this time (to detect time jumps) */
465		481
466	#define EV_TV_SET(tv,t) do { tv.tv_sec = (long)t; tv.tv_usec = (long)((t - tv.tv_sec) * 1e6); } while (0)	482	#define EV_TV_SET(tv,t) do { tv.tv_sec = (long)t; tv.tv_usec = (long)((t - tv.tv_sec) * 1e6); } while (0)
467	#define EV_TS_SET(ts,t) do { ts.tv_sec = (long)t; ts.tv_nsec = (long)((t - ts.tv_sec) * 1e9); } while (0)	483	#define EV_TS_SET(ts,t) do { ts.tv_sec = (long)t; ts.tv_nsec = (long)((t - ts.tv_sec) * 1e9); } while (0)
468		484
469	/* the following are taken from libecb */	485	/* the following is ecb.h embedded into libev - use update_ev_c to update from an external copy */
470	/* ecb.h start */	486	/* ECB.H BEGIN */
		487	/*
		488	* libecb - http://software.schmorp.de/pkg/libecb
		489	*
		490	* Copyright (©) 2009-2012 Marc Alexander Lehmann <libecb@schmorp.de>
		491	* Copyright (©) 2011 Emanuele Giaquinta
		492	* All rights reserved.
		493	*
		494	* Redistribution and use in source and binary forms, with or without modifica-
		495	* tion, are permitted provided that the following conditions are met:
		496	*
		497	* 1. Redistributions of source code must retain the above copyright notice,
		498	* this list of conditions and the following disclaimer.
		499	*
		500	* 2. Redistributions in binary form must reproduce the above copyright
		501	* notice, this list of conditions and the following disclaimer in the
		502	* documentation and/or other materials provided with the distribution.
		503	*
		504	* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR IMPLIED
		505	* WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MER-
		506	* CHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO
		507	* EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPE-
		508	* CIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
		509	* PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS;
		510	* OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
		511	* WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTH-
		512	* ERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
		513	* OF THE POSSIBILITY OF SUCH DAMAGE.
		514	*/
		515
		516	#ifndef ECB_H
		517	#define ECB_H
		518
		519	/* 16 bits major, 16 bits minor */
		520	#define ECB_VERSION 0x00010002
		521
		522	#ifdef _WIN32
		523	typedef signed char int8_t;
		524	typedef unsigned char uint8_t;
		525	typedef signed short int16_t;
		526	typedef unsigned short uint16_t;
		527	typedef signed int int32_t;
		528	typedef unsigned int uint32_t;
		529	#if __GNUC__
		530	typedef signed long long int64_t;
		531	typedef unsigned long long uint64_t;
		532	#else /* _MSC_VER || __BORLANDC__ */
		533	typedef signed __int64 int64_t;
		534	typedef unsigned __int64 uint64_t;
		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
		545	#else
		546	#include <inttypes.h>
		547	#if UINTMAX_MAX > 0xffffffffU
		548	#define ECB_PTRSIZE 8
		549	#else
		550	#define ECB_PTRSIZE 4
		551	#endif
		552	#endif
471		553
472	/* many compilers define _GNUC_ to some versions but then only implement	554	/* many compilers define _GNUC_ to some versions but then only implement
473	* what their idiot authors think are the "more important" extensions,	555	* what their idiot authors think are the "more important" extensions,
474	* causing enourmous grief in return for some better fake benchmark numbers.	556	* causing enormous grief in return for some better fake benchmark numbers.
475	* or so.	557	* or so.
476	* we try to detect these and simply assume they are not gcc - if they have	558	* we try to detect these and simply assume they are not gcc - if they have
477	* an issue with that they should have done it right in the first place.	559	* an issue with that they should have done it right in the first place.
478	*/	560	*/
479	#ifndef ECB_GCC_VERSION	561	#ifndef ECB_GCC_VERSION
480	#if !defined(__GNUC_MINOR__) || defined(__INTEL_COMPILER) || defined(__SUNPRO_C) || defined(__SUNPRO_CC) || defined(__llvm__) || defined(__clang__)	562	#if !defined __GNUC_MINOR__ || defined __INTEL_COMPILER || defined __SUNPRO_C || defined __SUNPRO_CC || defined __llvm__ || defined __clang__
481	#define ECB_GCC_VERSION(major,minor) 0	563	#define ECB_GCC_VERSION(major,minor) 0
482	#else	564	#else
483	#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)))
484	#endif	566	#endif
485	#endif	567	#endif
		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
		585	/*****************************************************************************/
		586
		587	/* ECB_NO_THREADS - ecb is not used by multiple threads, ever */
		588	/* ECB_NO_SMP - ecb might be used in multiple threads, but only on a single cpu */
		589
		590	#if ECB_NO_THREADS
		591	#define ECB_NO_SMP 1
		592	#endif
		593
		594	#if ECB_NO_SMP
		595	#define ECB_MEMORY_FENCE do { } while (0)
		596	#endif
		597
		598	#ifndef ECB_MEMORY_FENCE
		599	#if ECB_GCC_VERSION(2,5) || defined __INTEL_COMPILER || (__llvm__ && __GNUC__) || __SUNPRO_C >= 0x5110 || __SUNPRO_CC >= 0x5110
		600	#if __i386 || __i386__
		601	#define ECB_MEMORY_FENCE __asm__ __volatile__ ("lock; orb $0, -1(%%esp)" : : : "memory")
		602	#define ECB_MEMORY_FENCE_ACQUIRE __asm__ __volatile__ ("" : : : "memory")
		603	#define ECB_MEMORY_FENCE_RELEASE __asm__ __volatile__ ("")
		604	#elif __amd64 || __amd64__ || __x86_64 || __x86_64__
		605	#define ECB_MEMORY_FENCE __asm__ __volatile__ ("mfence" : : : "memory")
		606	#define ECB_MEMORY_FENCE_ACQUIRE __asm__ __volatile__ ("" : : : "memory")
		607	#define ECB_MEMORY_FENCE_RELEASE __asm__ __volatile__ ("")
		608	#elif __powerpc__ || __ppc__ || __powerpc64__ || __ppc64__
		609	#define ECB_MEMORY_FENCE __asm__ __volatile__ ("sync" : : : "memory")
		610	#elif defined __ARM_ARCH_6__ || defined __ARM_ARCH_6J__ \
		611	|| defined __ARM_ARCH_6K__ || defined __ARM_ARCH_6ZK__
		612	#define ECB_MEMORY_FENCE __asm__ __volatile__ ("mcr p15,0,%0,c7,c10,5" : : "r" (0) : "memory")
		613	#elif defined __ARM_ARCH_7__ || defined __ARM_ARCH_7A__ \
		614	|| defined __ARM_ARCH_7M__ || defined __ARM_ARCH_7R__
		615	#define ECB_MEMORY_FENCE __asm__ __volatile__ ("dmb" : : : "memory")
		616	#elif __sparc || __sparc__
		617	#define ECB_MEMORY_FENCE __asm__ __volatile__ ("membar #LoadStore | #LoadLoad | #StoreStore | #StoreLoad" : : : "memory")
		618	#define ECB_MEMORY_FENCE_ACQUIRE __asm__ __volatile__ ("membar #LoadStore | #LoadLoad" : : : "memory")
		619	#define ECB_MEMORY_FENCE_RELEASE __asm__ __volatile__ ("membar #LoadStore | #StoreStore")
		620	#elif defined __s390__ || defined __s390x__
		621	#define ECB_MEMORY_FENCE __asm__ __volatile__ ("bcr 15,0" : : : "memory")
		622	#elif defined __mips__
		623	#define ECB_MEMORY_FENCE __asm__ __volatile__ ("sync" : : : "memory")
		624	#elif defined __alpha__
		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")
		631	#endif
		632	#endif
		633	#endif
		634
		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
		649	#elif ECB_GCC_VERSION(4,4) || defined __INTEL_COMPILER || defined __clang__
		650	#define ECB_MEMORY_FENCE __sync_synchronize ()
		651	#elif _MSC_VER >= 1400 /* VC++ 2005 */
		652	#pragma intrinsic(_ReadBarrier,_WriteBarrier,_ReadWriteBarrier)
		653	#define ECB_MEMORY_FENCE _ReadWriteBarrier ()
		654	#define ECB_MEMORY_FENCE_ACQUIRE _ReadWriteBarrier () /* according to msdn, _ReadBarrier is not a load fence */
		655	#define ECB_MEMORY_FENCE_RELEASE _WriteBarrier ()
		656	#elif defined _WIN32
		657	#include <WinNT.h>
		658	#define ECB_MEMORY_FENCE MemoryBarrier () /* actually just xchg on x86... scary */
		659	#elif __SUNPRO_C >= 0x5110 || __SUNPRO_CC >= 0x5110
		660	#include <mbarrier.h>
		661	#define ECB_MEMORY_FENCE __machine_rw_barrier ()
		662	#define ECB_MEMORY_FENCE_ACQUIRE __machine_r_barrier ()
		663	#define ECB_MEMORY_FENCE_RELEASE __machine_w_barrier ()
		664	#elif __xlC__
		665	#define ECB_MEMORY_FENCE __sync ()
		666	#endif
		667	#endif
		668
		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
		685	#if !ECB_AVOID_PTHREADS
		686	/*
		687	* if you get undefined symbol references to pthread_mutex_lock,
		688	* or failure to find pthread.h, then you should implement
		689	* the ECB_MEMORY_FENCE operations for your cpu/compiler
		690	* OR provide pthread.h and link against the posix thread library
		691	* of your system.
		692	*/
		693	#include <pthread.h>
		694	#define ECB_NEEDS_PTHREADS 1
		695	#define ECB_MEMORY_FENCE_NEEDS_PTHREADS 1
		696
		697	static pthread_mutex_t ecb_mf_lock = PTHREAD_MUTEX_INITIALIZER;
		698	#define ECB_MEMORY_FENCE do { pthread_mutex_lock (&ecb_mf_lock); pthread_mutex_unlock (&ecb_mf_lock); } while (0)
		699	#endif
		700	#endif
		701
		702	#if !defined ECB_MEMORY_FENCE_ACQUIRE && defined ECB_MEMORY_FENCE
		703	#define ECB_MEMORY_FENCE_ACQUIRE ECB_MEMORY_FENCE
		704	#endif
		705
		706	#if !defined ECB_MEMORY_FENCE_RELEASE && defined ECB_MEMORY_FENCE
		707	#define ECB_MEMORY_FENCE_RELEASE ECB_MEMORY_FENCE
		708	#endif
		709
		710	/*****************************************************************************/
486		711
487	#if __cplusplus	712	#if __cplusplus
488	#define ecb_inline static inline	713	#define ecb_inline static inline
489	#elif ECB_GCC_VERSION(2,5)	714	#elif ECB_GCC_VERSION(2,5)
490	#define ecb_inline static __inline__	715	#define ecb_inline static __inline__
491	#elif ECB_C99	716	#elif ECB_C99
492	#define ecb_inline static inline	717	#define ecb_inline static inline
493	#else	718	#else
494	#define ecb_inline static	719	#define ecb_inline static
495	#endif	720	#endif
		721
		722	#if ECB_GCC_VERSION(3,3)
		723	#define ecb_restrict __restrict__
		724	#elif ECB_C99
		725	#define ecb_restrict restrict
		726	#else
		727	#define ecb_restrict
		728	#endif
		729
		730	typedef int ecb_bool;
		731
		732	#define ECB_CONCAT_(a, b) a ## b
		733	#define ECB_CONCAT(a, b) ECB_CONCAT_(a, b)
		734	#define ECB_STRINGIFY_(a) # a
		735	#define ECB_STRINGIFY(a) ECB_STRINGIFY_(a)
		736
		737	#define ecb_function_ ecb_inline
496		738
497	#if ECB_GCC_VERSION(3,1)	739	#if ECB_GCC_VERSION(3,1)
498	#define ecb_attribute(attrlist) __attribute__(attrlist)	740	#define ecb_attribute(attrlist) __attribute__(attrlist)
499	#define ecb_is_constant(expr) __builtin_constant_p (expr)	741	#define ecb_is_constant(expr) __builtin_constant_p (expr)
500	#define ecb_expect(expr,value) __builtin_expect ((expr),(value))	742	#define ecb_expect(expr,value) __builtin_expect ((expr),(value))
…		…
504	#define ecb_is_constant(expr) 0	746	#define ecb_is_constant(expr) 0
505	#define ecb_expect(expr,value) (expr)	747	#define ecb_expect(expr,value) (expr)
506	#define ecb_prefetch(addr,rw,locality)	748	#define ecb_prefetch(addr,rw,locality)
507	#endif	749	#endif
508		750
		751	/* no emulation for ecb_decltype */
		752	#if ECB_GCC_VERSION(4,5)
		753	#define ecb_decltype(x) __decltype(x)
		754	#elif ECB_GCC_VERSION(3,0)
		755	#define ecb_decltype(x) __typeof(x)
		756	#endif
		757
509	#define ecb_noinline ecb_attribute ((__noinline__))	758	#define ecb_noinline ecb_attribute ((__noinline__))
510	#define ecb_noreturn ecb_attribute ((__noreturn__))
511	#define ecb_unused ecb_attribute ((__unused__))	759	#define ecb_unused ecb_attribute ((__unused__))
512	#define ecb_const ecb_attribute ((__const__))	760	#define ecb_const ecb_attribute ((__const__))
513	#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
514		768
515	#if ECB_GCC_VERSION(4,3)	769	#if ECB_GCC_VERSION(4,3)
516	#define ecb_artificial ecb_attribute ((__artificial__))	770	#define ecb_artificial ecb_attribute ((__artificial__))
517	#define ecb_hot ecb_attribute ((__hot__))	771	#define ecb_hot ecb_attribute ((__hot__))
518	#define ecb_cold ecb_attribute ((__cold__))	772	#define ecb_cold ecb_attribute ((__cold__))
…		…
525	/* put around conditional expressions if you are very sure that the */	779	/* put around conditional expressions if you are very sure that the */
526	/* expression is mostly true or mostly false. note that these return */	780	/* expression is mostly true or mostly false. note that these return */
527	/* booleans, not the expression. */	781	/* booleans, not the expression. */
528	#define ecb_expect_false(expr) ecb_expect (!!(expr), 0)	782	#define ecb_expect_false(expr) ecb_expect (!!(expr), 0)
529	#define ecb_expect_true(expr) ecb_expect (!!(expr), 1)	783	#define ecb_expect_true(expr) ecb_expect (!!(expr), 1)
530	/* ecb.h end */	784	/* for compatibility to the rest of the world */
		785	#define ecb_likely(expr) ecb_expect_true (expr)
		786	#define ecb_unlikely(expr) ecb_expect_false (expr)
		787
		788	/* count trailing zero bits and count # of one bits */
		789	#if ECB_GCC_VERSION(3,4)
		790	/* we assume int == 32 bit, long == 32 or 64 bit and long long == 64 bit */
		791	#define ecb_ld32(x) (__builtin_clz (x) ^ 31)
		792	#define ecb_ld64(x) (__builtin_clzll (x) ^ 63)
		793	#define ecb_ctz32(x) __builtin_ctz (x)
		794	#define ecb_ctz64(x) __builtin_ctzll (x)
		795	#define ecb_popcount32(x) __builtin_popcount (x)
		796	/* no popcountll */
		797	#else
		798	ecb_function_ int ecb_ctz32 (uint32_t x) ecb_const;
		799	ecb_function_ int
		800	ecb_ctz32 (uint32_t x)
		801	{
		802	int r = 0;
		803
		804	x &= ~x + 1; /* this isolates the lowest bit */
		805
		806	#if ECB_branchless_on_i386
		807	r += !!(x & 0xaaaaaaaa) << 0;
		808	r += !!(x & 0xcccccccc) << 1;
		809	r += !!(x & 0xf0f0f0f0) << 2;
		810	r += !!(x & 0xff00ff00) << 3;
		811	r += !!(x & 0xffff0000) << 4;
		812	#else
		813	if (x & 0xaaaaaaaa) r += 1;
		814	if (x & 0xcccccccc) r += 2;
		815	if (x & 0xf0f0f0f0) r += 4;
		816	if (x & 0xff00ff00) r += 8;
		817	if (x & 0xffff0000) r += 16;
		818	#endif
		819
		820	return r;
		821	}
		822
		823	ecb_function_ int ecb_ctz64 (uint64_t x) ecb_const;
		824	ecb_function_ int
		825	ecb_ctz64 (uint64_t x)
		826	{
		827	int shift = x & 0xffffffffU ? 0 : 32;
		828	return ecb_ctz32 (x >> shift) + shift;
		829	}
		830
		831	ecb_function_ int ecb_popcount32 (uint32_t x) ecb_const;
		832	ecb_function_ int
		833	ecb_popcount32 (uint32_t x)
		834	{
		835	x -= (x >> 1) & 0x55555555;
		836	x = ((x >> 2) & 0x33333333) + (x & 0x33333333);
		837	x = ((x >> 4) + x) & 0x0f0f0f0f;
		838	x *= 0x01010101;
		839
		840	return x >> 24;
		841	}
		842
		843	ecb_function_ int ecb_ld32 (uint32_t x) ecb_const;
		844	ecb_function_ int ecb_ld32 (uint32_t x)
		845	{
		846	int r = 0;
		847
		848	if (x >> 16) { x >>= 16; r += 16; }
		849	if (x >> 8) { x >>= 8; r += 8; }
		850	if (x >> 4) { x >>= 4; r += 4; }
		851	if (x >> 2) { x >>= 2; r += 2; }
		852	if (x >> 1) { r += 1; }
		853
		854	return r;
		855	}
		856
		857	ecb_function_ int ecb_ld64 (uint64_t x) ecb_const;
		858	ecb_function_ int ecb_ld64 (uint64_t x)
		859	{
		860	int r = 0;
		861
		862	if (x >> 32) { x >>= 32; r += 32; }
		863
		864	return r + ecb_ld32 (x);
		865	}
		866	#endif
		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
		873	ecb_function_ uint8_t ecb_bitrev8 (uint8_t x) ecb_const;
		874	ecb_function_ uint8_t ecb_bitrev8 (uint8_t x)
		875	{
		876	return ( (x * 0x0802U & 0x22110U)
		877	| (x * 0x8020U & 0x88440U)) * 0x10101U >> 16;
		878	}
		879
		880	ecb_function_ uint16_t ecb_bitrev16 (uint16_t x) ecb_const;
		881	ecb_function_ uint16_t ecb_bitrev16 (uint16_t x)
		882	{
		883	x = ((x >> 1) & 0x5555) | ((x & 0x5555) << 1);
		884	x = ((x >> 2) & 0x3333) | ((x & 0x3333) << 2);
		885	x = ((x >> 4) & 0x0f0f) | ((x & 0x0f0f) << 4);
		886	x = ( x >> 8 ) | ( x << 8);
		887
		888	return x;
		889	}
		890
		891	ecb_function_ uint32_t ecb_bitrev32 (uint32_t x) ecb_const;
		892	ecb_function_ uint32_t ecb_bitrev32 (uint32_t x)
		893	{
		894	x = ((x >> 1) & 0x55555555) | ((x & 0x55555555) << 1);
		895	x = ((x >> 2) & 0x33333333) | ((x & 0x33333333) << 2);
		896	x = ((x >> 4) & 0x0f0f0f0f) | ((x & 0x0f0f0f0f) << 4);
		897	x = ((x >> 8) & 0x00ff00ff) | ((x & 0x00ff00ff) << 8);
		898	x = ( x >> 16 ) | ( x << 16);
		899
		900	return x;
		901	}
		902
		903	/* popcount64 is only available on 64 bit cpus as gcc builtin */
		904	/* so for this version we are lazy */
		905	ecb_function_ int ecb_popcount64 (uint64_t x) ecb_const;
		906	ecb_function_ int
		907	ecb_popcount64 (uint64_t x)
		908	{
		909	return ecb_popcount32 (x) + ecb_popcount32 (x >> 32);
		910	}
		911
		912	ecb_inline uint8_t ecb_rotl8 (uint8_t x, unsigned int count) ecb_const;
		913	ecb_inline uint8_t ecb_rotr8 (uint8_t x, unsigned int count) ecb_const;
		914	ecb_inline uint16_t ecb_rotl16 (uint16_t x, unsigned int count) ecb_const;
		915	ecb_inline uint16_t ecb_rotr16 (uint16_t x, unsigned int count) ecb_const;
		916	ecb_inline uint32_t ecb_rotl32 (uint32_t x, unsigned int count) ecb_const;
		917	ecb_inline uint32_t ecb_rotr32 (uint32_t x, unsigned int count) ecb_const;
		918	ecb_inline uint64_t ecb_rotl64 (uint64_t x, unsigned int count) ecb_const;
		919	ecb_inline uint64_t ecb_rotr64 (uint64_t x, unsigned int count) ecb_const;
		920
		921	ecb_inline uint8_t ecb_rotl8 (uint8_t x, unsigned int count) { return (x >> ( 8 - count)) | (x << count); }
		922	ecb_inline uint8_t ecb_rotr8 (uint8_t x, unsigned int count) { return (x << ( 8 - count)) | (x >> count); }
		923	ecb_inline uint16_t ecb_rotl16 (uint16_t x, unsigned int count) { return (x >> (16 - count)) | (x << count); }
		924	ecb_inline uint16_t ecb_rotr16 (uint16_t x, unsigned int count) { return (x << (16 - count)) | (x >> count); }
		925	ecb_inline uint32_t ecb_rotl32 (uint32_t x, unsigned int count) { return (x >> (32 - count)) | (x << count); }
		926	ecb_inline uint32_t ecb_rotr32 (uint32_t x, unsigned int count) { return (x << (32 - count)) | (x >> count); }
		927	ecb_inline uint64_t ecb_rotl64 (uint64_t x, unsigned int count) { return (x >> (64 - count)) | (x << count); }
		928	ecb_inline uint64_t ecb_rotr64 (uint64_t x, unsigned int count) { return (x << (64 - count)) | (x >> count); }
		929
		930	#if ECB_GCC_VERSION(4,3)
		931	#define ecb_bswap16(x) (__builtin_bswap32 (x) >> 16)
		932	#define ecb_bswap32(x) __builtin_bswap32 (x)
		933	#define ecb_bswap64(x) __builtin_bswap64 (x)
		934	#else
		935	ecb_function_ uint16_t ecb_bswap16 (uint16_t x) ecb_const;
		936	ecb_function_ uint16_t
		937	ecb_bswap16 (uint16_t x)
		938	{
		939	return ecb_rotl16 (x, 8);
		940	}
		941
		942	ecb_function_ uint32_t ecb_bswap32 (uint32_t x) ecb_const;
		943	ecb_function_ uint32_t
		944	ecb_bswap32 (uint32_t x)
		945	{
		946	return (((uint32_t)ecb_bswap16 (x)) << 16) | ecb_bswap16 (x >> 16);
		947	}
		948
		949	ecb_function_ uint64_t ecb_bswap64 (uint64_t x) ecb_const;
		950	ecb_function_ uint64_t
		951	ecb_bswap64 (uint64_t x)
		952	{
		953	return (((uint64_t)ecb_bswap32 (x)) << 32) | ecb_bswap32 (x >> 32);
		954	}
		955	#endif
		956
		957	#if ECB_GCC_VERSION(4,5)
		958	#define ecb_unreachable() __builtin_unreachable ()
		959	#else
		960	/* this seems to work fine, but gcc always emits a warning for it :/ */
		961	ecb_inline void ecb_unreachable (void) ecb_noreturn;
		962	ecb_inline void ecb_unreachable (void) { }
		963	#endif
		964
		965	/* try to tell the compiler that some condition is definitely true */
		966	#define ecb_assume(cond) if (!(cond)) ecb_unreachable (); else 0
		967
		968	ecb_inline unsigned char ecb_byteorder_helper (void) ecb_const;
		969	ecb_inline unsigned char
		970	ecb_byteorder_helper (void)
		971	{
		972	/* the union code still generates code under pressure in gcc, */
		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
		992	}
		993
		994	ecb_inline ecb_bool ecb_big_endian (void) ecb_const;
		995	ecb_inline ecb_bool ecb_big_endian (void) { return ecb_byteorder_helper () == 0x11; }
		996	ecb_inline ecb_bool ecb_little_endian (void) ecb_const;
		997	ecb_inline ecb_bool ecb_little_endian (void) { return ecb_byteorder_helper () == 0x44; }
		998
		999	#if ECB_GCC_VERSION(3,0) || ECB_C99
		1000	#define ecb_mod(m,n) ((m) % (n) + ((m) % (n) < 0 ? (n) : 0))
		1001	#else
		1002	#define ecb_mod(m,n) ((m) < 0 ? ((n) - 1 - ((-1 - (m)) % (n))) : ((m) % (n)))
		1003	#endif
		1004
		1005	#if __cplusplus
		1006	template<typename T>
		1007	static inline T ecb_div_rd (T val, T div)
		1008	{
		1009	return val < 0 ? - ((-val + div - 1) / div) : (val ) / div;
		1010	}
		1011	template<typename T>
		1012	static inline T ecb_div_ru (T val, T div)
		1013	{
		1014	return val < 0 ? - ((-val ) / div) : (val + div - 1) / div;
		1015	}
		1016	#else
		1017	#define ecb_div_rd(val,div) ((val) < 0 ? - ((-(val) + (div) - 1) / (div)) : ((val) ) / (div))
		1018	#define ecb_div_ru(val,div) ((val) < 0 ? - ((-(val) ) / (div)) : ((val) + (div) - 1) / (div))
		1019	#endif
		1020
		1021	#if ecb_cplusplus_does_not_suck
		1022	/* does not work for local types (http://www.open-std.org/jtc1/sc22/wg21/docs/papers/2008/n2657.htm) */
		1023	template<typename T, int N>
		1024	static inline int ecb_array_length (const T (&arr)[N])
		1025	{
		1026	return N;
		1027	}
		1028	#else
		1029	#define ecb_array_length(name) (sizeof (name) / sizeof (name [0]))
		1030	#endif
		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
		1199	#endif
		1200
		1201	/* ECB.H END */
		1202
		1203	#if ECB_MEMORY_FENCE_NEEDS_PTHREADS
		1204	/* if your architecture doesn't need memory fences, e.g. because it is
		1205	* single-cpu/core, or if you use libev in a project that doesn't use libev
		1206	* from multiple threads, then you can define ECB_AVOID_PTHREADS when compiling
		1207	* libev, in which cases the memory fences become nops.
		1208	* alternatively, you can remove this #error and link against libpthread,
		1209	* which will then provide the memory fences.
		1210	*/
		1211	# error "memory fences not defined for your architecture, please report"
		1212	#endif
		1213
		1214	#ifndef ECB_MEMORY_FENCE
		1215	# define ECB_MEMORY_FENCE do { } while (0)
		1216	# define ECB_MEMORY_FENCE_ACQUIRE ECB_MEMORY_FENCE
		1217	# define ECB_MEMORY_FENCE_RELEASE ECB_MEMORY_FENCE
		1218	#endif
531		1219
532	#define expect_false(cond) ecb_expect_false (cond)	1220	#define expect_false(cond) ecb_expect_false (cond)
533	#define expect_true(cond) ecb_expect_true (cond)	1221	#define expect_true(cond) ecb_expect_true (cond)
534	#define noinline ecb_noinline	1222	#define noinline ecb_noinline
535		1223
…		…
681	{	1369	{
682	write (STDERR_FILENO, msg, strlen (msg));	1370	write (STDERR_FILENO, msg, strlen (msg));
683	}	1371	}
684	#endif	1372	#endif
685		1373
686	static void (*syserr_cb)(const char *msg);	1374	static void (*syserr_cb)(const char *msg) EV_THROW;
687		1375
688	void ecb_cold	1376	void ecb_cold
689	ev_set_syserr_cb (void (*cb)(const char *msg))	1377	ev_set_syserr_cb (void (*cb)(const char *msg) EV_THROW) EV_THROW
690	{	1378	{
691	syserr_cb = cb;	1379	syserr_cb = cb;
692	}	1380	}
693		1381
694	static void noinline ecb_cold	1382	static void noinline ecb_cold
…		…
712	abort ();	1400	abort ();
713	}	1401	}
714	}	1402	}
715		1403
716	static void *	1404	static void *
717	ev_realloc_emul (void *ptr, long size)	1405	ev_realloc_emul (void *ptr, long size) EV_THROW
718	{	1406	{
719	#if __GLIBC__
720	return realloc (ptr, size);
721	#else
722	/* some systems, notably openbsd and darwin, fail to properly	1407	/* some systems, notably openbsd and darwin, fail to properly
723	* 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
724	* 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.
725	*/	1412	*/
726		1413
727	if (size)	1414	if (size)
728	return realloc (ptr, size);	1415	return realloc (ptr, size);
729		1416
730	free (ptr);	1417	free (ptr);
731	return 0;	1418	return 0;
732	#endif
733	}	1419	}
734		1420
735	static void *(*alloc)(void *ptr, long size) = ev_realloc_emul;	1421	static void *(*alloc)(void *ptr, long size) EV_THROW = ev_realloc_emul;
736		1422
737	void ecb_cold	1423	void ecb_cold
738	ev_set_allocator (void *(*cb)(void *ptr, long size))	1424	ev_set_allocator (void *(*cb)(void *ptr, long size) EV_THROW) EV_THROW
739	{	1425	{
740	alloc = cb;	1426	alloc = cb;
741	}	1427	}
742		1428
743	inline_speed void *	1429	inline_speed void *
…		…
831	#undef VAR	1517	#undef VAR
832	};	1518	};
833	#include "ev_wrap.h"	1519	#include "ev_wrap.h"
834		1520
835	static struct ev_loop default_loop_struct;	1521	static struct ev_loop default_loop_struct;
836	struct ev_loop *ev_default_loop_ptr;	1522	EV_API_DECL struct ev_loop *ev_default_loop_ptr = 0; /* needs to be initialised to make it a definition despite extern */
837		1523
838	#else	1524	#else
839		1525
840	ev_tstamp ev_rt_now;	1526	EV_API_DECL ev_tstamp ev_rt_now = 0; /* needs to be initialised to make it a definition despite extern */
841	#define VAR(name,decl) static decl;	1527	#define VAR(name,decl) static decl;
842	#include "ev_vars.h"	1528	#include "ev_vars.h"
843	#undef VAR	1529	#undef VAR
844		1530
845	static int ev_default_loop_ptr;	1531	static int ev_default_loop_ptr;
…		…
860		1546
861	/*****************************************************************************/	1547	/*****************************************************************************/
862		1548
863	#ifndef EV_HAVE_EV_TIME	1549	#ifndef EV_HAVE_EV_TIME
864	ev_tstamp	1550	ev_tstamp
865	ev_time (void)	1551	ev_time (void) EV_THROW
866	{	1552	{
867	#if EV_USE_REALTIME	1553	#if EV_USE_REALTIME
868	if (expect_true (have_realtime))	1554	if (expect_true (have_realtime))
869	{	1555	{
870	struct timespec ts;	1556	struct timespec ts;
…		…
894	return ev_time ();	1580	return ev_time ();
895	}	1581	}
896		1582
897	#if EV_MULTIPLICITY	1583	#if EV_MULTIPLICITY
898	ev_tstamp	1584	ev_tstamp
899	ev_now (EV_P)	1585	ev_now (EV_P) EV_THROW
900	{	1586	{
901	return ev_rt_now;	1587	return ev_rt_now;
902	}	1588	}
903	#endif	1589	#endif
904		1590
905	void	1591	void
906	ev_sleep (ev_tstamp delay)	1592	ev_sleep (ev_tstamp delay) EV_THROW
907	{	1593	{
908	if (delay > 0.)	1594	if (delay > 0.)
909	{	1595	{
910	#if EV_USE_NANOSLEEP	1596	#if EV_USE_NANOSLEEP
911	struct timespec ts;	1597	struct timespec ts;
912		1598
913	EV_TS_SET (ts, delay);	1599	EV_TS_SET (ts, delay);
914	nanosleep (&ts, 0);	1600	nanosleep (&ts, 0);
915	#elif defined(_WIN32)	1601	#elif defined _WIN32
916	Sleep ((unsigned long)(delay * 1e3));	1602	Sleep ((unsigned long)(delay * 1e3));
917	#else	1603	#else
918	struct timeval tv;	1604	struct timeval tv;
919		1605
920	/* here we rely on sys/time.h + sys/types.h + unistd.h providing select */	1606	/* here we rely on sys/time.h + sys/types.h + unistd.h providing select */
…		…
939		1625
940	do	1626	do
941	ncur <<= 1;	1627	ncur <<= 1;
942	while (cnt > ncur);	1628	while (cnt > ncur);
943		1629
944	/* if size is large, round to MALLOC_ROUND - 4 * longs to accomodate malloc overhead */	1630	/* if size is large, round to MALLOC_ROUND - 4 * longs to accommodate malloc overhead */
945	if (elem * ncur > MALLOC_ROUND - sizeof (void *) * 4)	1631	if (elem * ncur > MALLOC_ROUND - sizeof (void *) * 4)
946	{	1632	{
947	ncur *= elem;	1633	ncur *= elem;
948	ncur = (ncur + elem + (MALLOC_ROUND - 1) + sizeof (void *) * 4) & ~(MALLOC_ROUND - 1);	1634	ncur = (ncur + elem + (MALLOC_ROUND - 1) + sizeof (void *) * 4) & ~(MALLOC_ROUND - 1);
949	ncur = ncur - sizeof (void *) * 4;	1635	ncur = ncur - sizeof (void *) * 4;
…		…
964	memset ((void *)(base), 0, sizeof (*(base)) * (count))	1650	memset ((void *)(base), 0, sizeof (*(base)) * (count))
965		1651
966	#define array_needsize(type,base,cur,cnt,init) \	1652	#define array_needsize(type,base,cur,cnt,init) \
967	if (expect_false ((cnt) > (cur))) \	1653	if (expect_false ((cnt) > (cur))) \
968	{ \	1654	{ \
969	int ocur_ = (cur); \	1655	int ecb_unused ocur_ = (cur); \
970	(base) = (type *)array_realloc \	1656	(base) = (type *)array_realloc \
971	(sizeof (type), (base), &(cur), (cnt)); \	1657	(sizeof (type), (base), &(cur), (cnt)); \
972	init ((base) + (ocur_), (cur) - ocur_); \	1658	init ((base) + (ocur_), (cur) - ocur_); \
973	}	1659	}
974		1660
…		…
992	pendingcb (EV_P_ ev_prepare *w, int revents)	1678	pendingcb (EV_P_ ev_prepare *w, int revents)
993	{	1679	{
994	}	1680	}
995		1681
996	void noinline	1682	void noinline
997	ev_feed_event (EV_P_ void *w, int revents)	1683	ev_feed_event (EV_P_ void *w, int revents) EV_THROW
998	{	1684	{
999	W w_ = (W)w;	1685	W w_ = (W)w;
1000	int pri = ABSPRI (w_);	1686	int pri = ABSPRI (w_);
1001		1687
1002	if (expect_false (w_->pending))	1688	if (expect_false (w_->pending))
…		…
1006	w_->pending = ++pendingcnt [pri];	1692	w_->pending = ++pendingcnt [pri];
1007	array_needsize (ANPENDING, pendings [pri], pendingmax [pri], w_->pending, EMPTY2);	1693	array_needsize (ANPENDING, pendings [pri], pendingmax [pri], w_->pending, EMPTY2);
1008	pendings [pri][w_->pending - 1].w = w_;	1694	pendings [pri][w_->pending - 1].w = w_;
1009	pendings [pri][w_->pending - 1].events = revents;	1695	pendings [pri][w_->pending - 1].events = revents;
1010	}	1696	}
		1697
		1698	pendingpri = NUMPRI - 1;
1011	}	1699	}
1012		1700
1013	inline_speed void	1701	inline_speed void
1014	feed_reverse (EV_P_ W w)	1702	feed_reverse (EV_P_ W w)
1015	{	1703	{
…		…
1061	if (expect_true (!anfd->reify))	1749	if (expect_true (!anfd->reify))
1062	fd_event_nocheck (EV_A_ fd, revents);	1750	fd_event_nocheck (EV_A_ fd, revents);
1063	}	1751	}
1064		1752
1065	void	1753	void
1066	ev_feed_fd_event (EV_P_ int fd, int revents)	1754	ev_feed_fd_event (EV_P_ int fd, int revents) EV_THROW
1067	{	1755	{
1068	if (fd >= 0 && fd < anfdmax)	1756	if (fd >= 0 && fd < anfdmax)
1069	fd_event_nocheck (EV_A_ fd, revents);	1757	fd_event_nocheck (EV_A_ fd, revents);
1070	}	1758	}
1071		1759
…		…
1390	static void noinline ecb_cold	2078	static void noinline ecb_cold
1391	evpipe_init (EV_P)	2079	evpipe_init (EV_P)
1392	{	2080	{
1393	if (!ev_is_active (&pipe_w))	2081	if (!ev_is_active (&pipe_w))
1394	{	2082	{
		2083	int fds [2];
		2084
1395	# if EV_USE_EVENTFD	2085	# if EV_USE_EVENTFD
		2086	fds [0] = -1;
1396	evfd = eventfd (0, EFD_NONBLOCK | EFD_CLOEXEC);	2087	fds [1] = eventfd (0, EFD_NONBLOCK | EFD_CLOEXEC);
1397	if (evfd < 0 && errno == EINVAL)	2088	if (fds [1] < 0 && errno == EINVAL)
1398	evfd = eventfd (0, 0);	2089	fds [1] = eventfd (0, 0);
1399		2090
1400	if (evfd >= 0)	2091	if (fds [1] < 0)
		2092	# endif
1401	{	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
1402	evpipe [0] = -1;	2102	evpipe [0] = fds [0];
1403	fd_intern (evfd); /* doing it twice doesn't hurt */	2103
1404	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));
1405	}	2152	}
1406	else	2153	else
1407	# endif	2154	#endif
1408	{	2155	{
1409	while (pipe (evpipe))	2156	#ifdef _WIN32
1410	ev_syserr ("(libev) error creating signal/async pipe");	2157	WSABUF buf;
1411		2158	DWORD sent;
1412	fd_intern (evpipe [0]);	2159	buf.buf = &buf;
1413	fd_intern (evpipe [1]);	2160	buf.len = 1;
1414	ev_io_set (&pipe_w, evpipe [0], EV_READ);	2161	WSASend (EV_FD_TO_WIN32_HANDLE (evpipe [1]), &buf, 1, &sent, 0, 0, 0);
		2162	#else
		2163	write (evpipe [1], &(evpipe [1]), 1);
		2164	#endif
1415	}	2165	}
1416		2166
1417	ev_io_start (EV_A_ &pipe_w);
1418	ev_unref (EV_A); /* watcher should not keep loop alive */
1419	}
1420	}
1421
1422	inline_size void
1423	evpipe_write (EV_P_ EV_ATOMIC_T *flag)
1424	{
1425	if (!*flag)
1426	{
1427	*flag = 1;
1428
1429	pipe_write_skipped = 1;
1430
1431	if (pipe_write_wanted)
1432	{
1433	int old_errno = errno; /* save errno because write will clobber it */
1434	char dummy;
1435
1436	pipe_write_skipped = 0;
1437
1438	#if EV_USE_EVENTFD
1439	if (evfd >= 0)
1440	{
1441	uint64_t counter = 1;
1442	write (evfd, &counter, sizeof (uint64_t));
1443	}
1444	else
1445	#endif
1446	{
1447	/* win32 people keep sending patches that change this write() to send() */
1448	/* and then run away. but send() is wrong, it wants a socket handle on win32 */
1449	/* so when you think this write should be a send instead, please find out */
1450	/* where your send() is from - it's definitely not the microsoft send, and */
1451	/* tell me. thank you. */
1452	write (evpipe [1], &dummy, 1);
1453	}
1454
1455	errno = old_errno;	2167	errno = old_errno;
1456	}
1457	}	2168	}
1458	}	2169	}
1459		2170
1460	/* called whenever the libev signal pipe */	2171	/* called whenever the libev signal pipe */
1461	/* got some events (signal, async) */	2172	/* got some events (signal, async) */
…		…
1465	int i;	2176	int i;
1466		2177
1467	if (revents & EV_READ)	2178	if (revents & EV_READ)
1468	{	2179	{
1469	#if EV_USE_EVENTFD	2180	#if EV_USE_EVENTFD
1470	if (evfd >= 0)	2181	if (evpipe [0] < 0)
1471	{	2182	{
1472	uint64_t counter;	2183	uint64_t counter;
1473	read (evfd, &counter, sizeof (uint64_t));	2184	read (evpipe [1], &counter, sizeof (uint64_t));
1474	}	2185	}
1475	else	2186	else
1476	#endif	2187	#endif
1477	{	2188	{
1478	char dummy;	2189	char dummy[4];
1479	/* 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
1480	read (evpipe [0], &dummy, 1);	2198	read (evpipe [0], &dummy, sizeof (dummy));
		2199	#endif
1481	}	2200	}
1482	}	2201	}
1483		2202
1484	pipe_write_skipped = 0;	2203	pipe_write_skipped = 0;
		2204
		2205	ECB_MEMORY_FENCE; /* push out skipped, acquire flags */
1485		2206
1486	#if EV_SIGNAL_ENABLE	2207	#if EV_SIGNAL_ENABLE
1487	if (sig_pending)	2208	if (sig_pending)
1488	{	2209	{
1489	sig_pending = 0;	2210	sig_pending = 0;
		2211
		2212	ECB_MEMORY_FENCE;
1490		2213
1491	for (i = EV_NSIG - 1; i--; )	2214	for (i = EV_NSIG - 1; i--; )
1492	if (expect_false (signals [i].pending))	2215	if (expect_false (signals [i].pending))
1493	ev_feed_signal_event (EV_A_ i + 1);	2216	ev_feed_signal_event (EV_A_ i + 1);
1494	}	2217	}
…		…
1496		2219
1497	#if EV_ASYNC_ENABLE	2220	#if EV_ASYNC_ENABLE
1498	if (async_pending)	2221	if (async_pending)
1499	{	2222	{
1500	async_pending = 0;	2223	async_pending = 0;
		2224
		2225	ECB_MEMORY_FENCE;
1501		2226
1502	for (i = asynccnt; i--; )	2227	for (i = asynccnt; i--; )
1503	if (asyncs [i]->sent)	2228	if (asyncs [i]->sent)
1504	{	2229	{
1505	asyncs [i]->sent = 0;	2230	asyncs [i]->sent = 0;
		2231	ECB_MEMORY_FENCE_RELEASE;
1506	ev_feed_event (EV_A_ asyncs [i], EV_ASYNC);	2232	ev_feed_event (EV_A_ asyncs [i], EV_ASYNC);
1507	}	2233	}
1508	}	2234	}
1509	#endif	2235	#endif
1510	}	2236	}
1511		2237
1512	/*****************************************************************************/	2238	/*****************************************************************************/
1513		2239
1514	void	2240	void
1515	ev_feed_signal (int signum)	2241	ev_feed_signal (int signum) EV_THROW
1516	{	2242	{
1517	#if EV_MULTIPLICITY	2243	#if EV_MULTIPLICITY
		2244	EV_P;
		2245	ECB_MEMORY_FENCE_ACQUIRE;
1518	EV_P = signals [signum - 1].loop;	2246	EV_A = signals [signum - 1].loop;
1519		2247
1520	if (!EV_A)	2248	if (!EV_A)
1521	return;	2249	return;
1522	#endif	2250	#endif
1523		2251
1524	evpipe_init (EV_A);
1525
1526	signals [signum - 1].pending = 1;	2252	signals [signum - 1].pending = 1;
1527	evpipe_write (EV_A_ &sig_pending);	2253	evpipe_write (EV_A_ &sig_pending);
1528	}	2254	}
1529		2255
1530	static void	2256	static void
…		…
1536		2262
1537	ev_feed_signal (signum);	2263	ev_feed_signal (signum);
1538	}	2264	}
1539		2265
1540	void noinline	2266	void noinline
1541	ev_feed_signal_event (EV_P_ int signum)	2267	ev_feed_signal_event (EV_P_ int signum) EV_THROW
1542	{	2268	{
1543	WL w;	2269	WL w;
1544		2270
1545	if (expect_false (signum <= 0 || signum > EV_NSIG))	2271	if (expect_false (signum <= 0 || signum >= EV_NSIG))
1546	return;	2272	return;
1547		2273
1548	--signum;	2274	--signum;
1549		2275
1550	#if EV_MULTIPLICITY	2276	#if EV_MULTIPLICITY
…		…
1554	if (expect_false (signals [signum].loop != EV_A))	2280	if (expect_false (signals [signum].loop != EV_A))
1555	return;	2281	return;
1556	#endif	2282	#endif
1557		2283
1558	signals [signum].pending = 0;	2284	signals [signum].pending = 0;
		2285	ECB_MEMORY_FENCE_RELEASE;
1559		2286
1560	for (w = signals [signum].head; w; w = w->next)	2287	for (w = signals [signum].head; w; w = w->next)
1561	ev_feed_event (EV_A_ (W)w, EV_SIGNAL);	2288	ev_feed_event (EV_A_ (W)w, EV_SIGNAL);
1562	}	2289	}
1563		2290
…		…
1662	#if EV_USE_SELECT	2389	#if EV_USE_SELECT
1663	# include "ev_select.c"	2390	# include "ev_select.c"
1664	#endif	2391	#endif
1665		2392
1666	int ecb_cold	2393	int ecb_cold
1667	ev_version_major (void)	2394	ev_version_major (void) EV_THROW
1668	{	2395	{
1669	return EV_VERSION_MAJOR;	2396	return EV_VERSION_MAJOR;
1670	}	2397	}
1671		2398
1672	int ecb_cold	2399	int ecb_cold
1673	ev_version_minor (void)	2400	ev_version_minor (void) EV_THROW
1674	{	2401	{
1675	return EV_VERSION_MINOR;	2402	return EV_VERSION_MINOR;
1676	}	2403	}
1677		2404
1678	/* return true if we are running with elevated privileges and should ignore env variables */	2405	/* return true if we are running with elevated privileges and should ignore env variables */
…		…
1686	|| getgid () != getegid ();	2413	|| getgid () != getegid ();
1687	#endif	2414	#endif
1688	}	2415	}
1689		2416
1690	unsigned int ecb_cold	2417	unsigned int ecb_cold
1691	ev_supported_backends (void)	2418	ev_supported_backends (void) EV_THROW
1692	{	2419	{
1693	unsigned int flags = 0;	2420	unsigned int flags = 0;
1694		2421
1695	if (EV_USE_PORT ) flags |= EVBACKEND_PORT;	2422	if (EV_USE_PORT ) flags |= EVBACKEND_PORT;
1696	if (EV_USE_KQUEUE) flags |= EVBACKEND_KQUEUE;	2423	if (EV_USE_KQUEUE) flags |= EVBACKEND_KQUEUE;
…		…
1700		2427
1701	return flags;	2428	return flags;
1702	}	2429	}
1703		2430
1704	unsigned int ecb_cold	2431	unsigned int ecb_cold
1705	ev_recommended_backends (void)	2432	ev_recommended_backends (void) EV_THROW
1706	{	2433	{
1707	unsigned int flags = ev_supported_backends ();	2434	unsigned int flags = ev_supported_backends ();
1708		2435
1709	#ifndef __NetBSD__	2436	#ifndef __NetBSD__
1710	/* kqueue is borked on everything but netbsd apparently */	2437	/* kqueue is borked on everything but netbsd apparently */
…		…
1722		2449
1723	return flags;	2450	return flags;
1724	}	2451	}
1725		2452
1726	unsigned int ecb_cold	2453	unsigned int ecb_cold
1727	ev_embeddable_backends (void)	2454	ev_embeddable_backends (void) EV_THROW
1728	{	2455	{
1729	int flags = EVBACKEND_EPOLL | EVBACKEND_KQUEUE | EVBACKEND_PORT;	2456	int flags = EVBACKEND_EPOLL | EVBACKEND_KQUEUE | EVBACKEND_PORT;
1730		2457
1731	/* epoll embeddability broken on all linux versions up to at least 2.6.23 */	2458	/* epoll embeddability broken on all linux versions up to at least 2.6.23 */
1732	if (ev_linux_version () < 0x020620) /* disable it on linux < 2.6.32 */	2459	if (ev_linux_version () < 0x020620) /* disable it on linux < 2.6.32 */
…		…
1734		2461
1735	return flags;	2462	return flags;
1736	}	2463	}
1737		2464
1738	unsigned int	2465	unsigned int
1739	ev_backend (EV_P)	2466	ev_backend (EV_P) EV_THROW
1740	{	2467	{
1741	return backend;	2468	return backend;
1742	}	2469	}
1743		2470
1744	#if EV_FEATURE_API	2471	#if EV_FEATURE_API
1745	unsigned int	2472	unsigned int
1746	ev_iteration (EV_P)	2473	ev_iteration (EV_P) EV_THROW
1747	{	2474	{
1748	return loop_count;	2475	return loop_count;
1749	}	2476	}
1750		2477
1751	unsigned int	2478	unsigned int
1752	ev_depth (EV_P)	2479	ev_depth (EV_P) EV_THROW
1753	{	2480	{
1754	return loop_depth;	2481	return loop_depth;
1755	}	2482	}
1756		2483
1757	void	2484	void
1758	ev_set_io_collect_interval (EV_P_ ev_tstamp interval)	2485	ev_set_io_collect_interval (EV_P_ ev_tstamp interval) EV_THROW
1759	{	2486	{
1760	io_blocktime = interval;	2487	io_blocktime = interval;
1761	}	2488	}
1762		2489
1763	void	2490	void
1764	ev_set_timeout_collect_interval (EV_P_ ev_tstamp interval)	2491	ev_set_timeout_collect_interval (EV_P_ ev_tstamp interval) EV_THROW
1765	{	2492	{
1766	timeout_blocktime = interval;	2493	timeout_blocktime = interval;
1767	}	2494	}
1768		2495
1769	void	2496	void
1770	ev_set_userdata (EV_P_ void *data)	2497	ev_set_userdata (EV_P_ void *data) EV_THROW
1771	{	2498	{
1772	userdata = data;	2499	userdata = data;
1773	}	2500	}
1774		2501
1775	void *	2502	void *
1776	ev_userdata (EV_P)	2503	ev_userdata (EV_P) EV_THROW
1777	{	2504	{
1778	return userdata;	2505	return userdata;
1779	}	2506	}
1780		2507
1781	void	2508	void
1782	ev_set_invoke_pending_cb (EV_P_ void (*invoke_pending_cb)(EV_P))	2509	ev_set_invoke_pending_cb (EV_P_ void (*invoke_pending_cb)(EV_P)) EV_THROW
1783	{	2510	{
1784	invoke_cb = invoke_pending_cb;	2511	invoke_cb = invoke_pending_cb;
1785	}	2512	}
1786		2513
1787	void	2514	void
1788	ev_set_loop_release_cb (EV_P_ void (*release)(EV_P), void (*acquire)(EV_P))	2515	ev_set_loop_release_cb (EV_P_ void (*release)(EV_P) EV_THROW, void (*acquire)(EV_P) EV_THROW) EV_THROW
1789	{	2516	{
1790	release_cb = release;	2517	release_cb = release;
1791	acquire_cb = acquire;	2518	acquire_cb = acquire;
1792	}	2519	}
1793	#endif	2520	#endif
1794		2521
1795	/* initialise a loop structure, must be zero-initialised */	2522	/* initialise a loop structure, must be zero-initialised */
1796	static void noinline ecb_cold	2523	static void noinline ecb_cold
1797	loop_init (EV_P_ unsigned int flags)	2524	loop_init (EV_P_ unsigned int flags) EV_THROW
1798	{	2525	{
1799	if (!backend)	2526	if (!backend)
1800	{	2527	{
1801	origflags = flags;	2528	origflags = flags;
1802		2529
…		…
1847	#if EV_ASYNC_ENABLE	2574	#if EV_ASYNC_ENABLE
1848	async_pending = 0;	2575	async_pending = 0;
1849	#endif	2576	#endif
1850	pipe_write_skipped = 0;	2577	pipe_write_skipped = 0;
1851	pipe_write_wanted = 0;	2578	pipe_write_wanted = 0;
		2579	evpipe [0] = -1;
		2580	evpipe [1] = -1;
1852	#if EV_USE_INOTIFY	2581	#if EV_USE_INOTIFY
1853	fs_fd = flags & EVFLAG_NOINOTIFY ? -1 : -2;	2582	fs_fd = flags & EVFLAG_NOINOTIFY ? -1 : -2;
1854	#endif	2583	#endif
1855	#if EV_USE_SIGNALFD	2584	#if EV_USE_SIGNALFD
1856	sigfd = flags & EVFLAG_SIGNALFD ? -2 : -1;	2585	sigfd = flags & EVFLAG_SIGNALFD ? -2 : -1;
…		…
1907	EV_INVOKE_PENDING;	2636	EV_INVOKE_PENDING;
1908	}	2637	}
1909	#endif	2638	#endif
1910		2639
1911	#if EV_CHILD_ENABLE	2640	#if EV_CHILD_ENABLE
1912	if (ev_is_active (&childev))	2641	if (ev_is_default_loop (EV_A) && ev_is_active (&childev))
1913	{	2642	{
1914	ev_ref (EV_A); /* child watcher */	2643	ev_ref (EV_A); /* child watcher */
1915	ev_signal_stop (EV_A_ &childev);	2644	ev_signal_stop (EV_A_ &childev);
1916	}	2645	}
1917	#endif	2646	#endif
…		…
1919	if (ev_is_active (&pipe_w))	2648	if (ev_is_active (&pipe_w))
1920	{	2649	{
1921	/*ev_ref (EV_A);*/	2650	/*ev_ref (EV_A);*/
1922	/*ev_io_stop (EV_A_ &pipe_w);*/	2651	/*ev_io_stop (EV_A_ &pipe_w);*/
1923		2652
1924	#if EV_USE_EVENTFD
1925	if (evfd >= 0)
1926	close (evfd);
1927	#endif
1928
1929	if (evpipe [0] >= 0)
1930	{
1931	EV_WIN32_CLOSE_FD (evpipe [0]);	2653	if (evpipe [0] >= 0) EV_WIN32_CLOSE_FD (evpipe [0]);
1932	EV_WIN32_CLOSE_FD (evpipe [1]);	2654	if (evpipe [1] >= 0) EV_WIN32_CLOSE_FD (evpipe [1]);
1933	}
1934	}	2655	}
1935		2656
1936	#if EV_USE_SIGNALFD	2657	#if EV_USE_SIGNALFD
1937	if (ev_is_active (&sigfd_w))	2658	if (ev_is_active (&sigfd_w))
1938	close (sigfd);	2659	close (sigfd);
…		…
2024	#endif	2745	#endif
2025	#if EV_USE_INOTIFY	2746	#if EV_USE_INOTIFY
2026	infy_fork (EV_A);	2747	infy_fork (EV_A);
2027	#endif	2748	#endif
2028		2749
		2750	#if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE
2029	if (ev_is_active (&pipe_w))	2751	if (ev_is_active (&pipe_w))
2030	{	2752	{
2031	/* 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 */
2032		2754
2033	ev_ref (EV_A);	2755	ev_ref (EV_A);
2034	ev_io_stop (EV_A_ &pipe_w);	2756	ev_io_stop (EV_A_ &pipe_w);
2035		2757
2036	#if EV_USE_EVENTFD
2037	if (evfd >= 0)
2038	close (evfd);
2039	#endif
2040
2041	if (evpipe [0] >= 0)	2758	if (evpipe [0] >= 0)
2042	{
2043	EV_WIN32_CLOSE_FD (evpipe [0]);	2759	EV_WIN32_CLOSE_FD (evpipe [0]);
2044	EV_WIN32_CLOSE_FD (evpipe [1]);
2045	}
2046		2760
2047	#if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE
2048	evpipe_init (EV_A);	2761	evpipe_init (EV_A);
2049	/* now iterate over everything, in case we missed something */	2762	/* iterate over everything, in case we missed something before */
2050	pipecb (EV_A_ &pipe_w, EV_READ);	2763	ev_feed_event (EV_A_ &pipe_w, EV_CUSTOM);
2051	#endif
2052	}	2764	}
		2765	#endif
2053		2766
2054	postfork = 0;	2767	postfork = 0;
2055	}	2768	}
2056		2769
2057	#if EV_MULTIPLICITY	2770	#if EV_MULTIPLICITY
2058		2771
2059	struct ev_loop * ecb_cold	2772	struct ev_loop * ecb_cold
2060	ev_loop_new (unsigned int flags)	2773	ev_loop_new (unsigned int flags) EV_THROW
2061	{	2774	{
2062	EV_P = (struct ev_loop *)ev_malloc (sizeof (struct ev_loop));	2775	EV_P = (struct ev_loop *)ev_malloc (sizeof (struct ev_loop));
2063		2776
2064	memset (EV_A, 0, sizeof (struct ev_loop));	2777	memset (EV_A, 0, sizeof (struct ev_loop));
2065	loop_init (EV_A_ flags);	2778	loop_init (EV_A_ flags);
…		…
2109	}	2822	}
2110	#endif	2823	#endif
2111		2824
2112	#if EV_FEATURE_API	2825	#if EV_FEATURE_API
2113	void ecb_cold	2826	void ecb_cold
2114	ev_verify (EV_P)	2827	ev_verify (EV_P) EV_THROW
2115	{	2828	{
2116	#if EV_VERIFY	2829	#if EV_VERIFY
2117	int i;	2830	int i;
2118	WL w;	2831	WL w, w2;
2119		2832
2120	assert (activecnt >= -1);	2833	assert (activecnt >= -1);
2121		2834
2122	assert (fdchangemax >= fdchangecnt);	2835	assert (fdchangemax >= fdchangecnt);
2123	for (i = 0; i < fdchangecnt; ++i)	2836	for (i = 0; i < fdchangecnt; ++i)
2124	assert (("libev: negative fd in fdchanges", fdchanges [i] >= 0));	2837	assert (("libev: negative fd in fdchanges", fdchanges [i] >= 0));
2125		2838
2126	assert (anfdmax >= 0);	2839	assert (anfdmax >= 0);
2127	for (i = 0; i < anfdmax; ++i)	2840	for (i = 0; i < anfdmax; ++i)
		2841	{
		2842	int j = 0;
		2843
2128	for (w = anfds [i].head; w; w = w->next)	2844	for (w = w2 = anfds [i].head; w; w = w->next)
2129	{	2845	{
2130	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
2131	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));
2132	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));
2133	}	2856	}
		2857	}
2134		2858
2135	assert (timermax >= timercnt);	2859	assert (timermax >= timercnt);
2136	verify_heap (EV_A_ timers, timercnt);	2860	verify_heap (EV_A_ timers, timercnt);
2137		2861
2138	#if EV_PERIODIC_ENABLE	2862	#if EV_PERIODIC_ENABLE
…		…
2188	#if EV_MULTIPLICITY	2912	#if EV_MULTIPLICITY
2189	struct ev_loop * ecb_cold	2913	struct ev_loop * ecb_cold
2190	#else	2914	#else
2191	int	2915	int
2192	#endif	2916	#endif
2193	ev_default_loop (unsigned int flags)	2917	ev_default_loop (unsigned int flags) EV_THROW
2194	{	2918	{
2195	if (!ev_default_loop_ptr)	2919	if (!ev_default_loop_ptr)
2196	{	2920	{
2197	#if EV_MULTIPLICITY	2921	#if EV_MULTIPLICITY
2198	EV_P = ev_default_loop_ptr = &default_loop_struct;	2922	EV_P = ev_default_loop_ptr = &default_loop_struct;
…		…
2217		2941
2218	return ev_default_loop_ptr;	2942	return ev_default_loop_ptr;
2219	}	2943	}
2220		2944
2221	void	2945	void
2222	ev_loop_fork (EV_P)	2946	ev_loop_fork (EV_P) EV_THROW
2223	{	2947	{
2224	postfork = 1; /* must be in line with ev_default_fork */	2948	postfork = 1;
2225	}	2949	}
2226		2950
2227	/*****************************************************************************/	2951	/*****************************************************************************/
2228		2952
2229	void	2953	void
…		…
2231	{	2955	{
2232	EV_CB_INVOKE ((W)w, revents);	2956	EV_CB_INVOKE ((W)w, revents);
2233	}	2957	}
2234		2958
2235	unsigned int	2959	unsigned int
2236	ev_pending_count (EV_P)	2960	ev_pending_count (EV_P) EV_THROW
2237	{	2961	{
2238	int pri;	2962	int pri;
2239	unsigned int count = 0;	2963	unsigned int count = 0;
2240		2964
2241	for (pri = NUMPRI; pri--; )	2965	for (pri = NUMPRI; pri--; )
…		…
2245	}	2969	}
2246		2970
2247	void noinline	2971	void noinline
2248	ev_invoke_pending (EV_P)	2972	ev_invoke_pending (EV_P)
2249	{	2973	{
2250	int pri;	2974	pendingpri = NUMPRI;
2251		2975
2252	for (pri = NUMPRI; pri--; )	2976	while (pendingpri) /* pendingpri possibly gets modified in the inner loop */
		2977	{
		2978	--pendingpri;
		2979
2253	while (pendingcnt [pri])	2980	while (pendingcnt [pendingpri])
2254	{	2981	{
2255	ANPENDING *p = pendings [pri] + --pendingcnt [pri];	2982	ANPENDING *p = pendings [pendingpri] + --pendingcnt [pendingpri];
2256		2983
2257	p->w->pending = 0;	2984	p->w->pending = 0;
2258	EV_CB_INVOKE (p->w, p->events);	2985	EV_CB_INVOKE (p->w, p->events);
2259	EV_FREQUENT_CHECK;	2986	EV_FREQUENT_CHECK;
2260	}	2987	}
		2988	}
2261	}	2989	}
2262		2990
2263	#if EV_IDLE_ENABLE	2991	#if EV_IDLE_ENABLE
2264	/* make idle watchers pending. this handles the "call-idle */	2992	/* make idle watchers pending. this handles the "call-idle */
2265	/* only when higher priorities are idle" logic */	2993	/* only when higher priorities are idle" logic */
…		…
2355	{	3083	{
2356	EV_FREQUENT_CHECK;	3084	EV_FREQUENT_CHECK;
2357		3085
2358	while (periodiccnt && ANHE_at (periodics [HEAP0]) < ev_rt_now)	3086	while (periodiccnt && ANHE_at (periodics [HEAP0]) < ev_rt_now)
2359	{	3087	{
2360	int feed_count = 0;
2361
2362	do	3088	do
2363	{	3089	{
2364	ev_periodic *w = (ev_periodic *)ANHE_w (periodics [HEAP0]);	3090	ev_periodic *w = (ev_periodic *)ANHE_w (periodics [HEAP0]);
2365		3091
2366	/*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)));*/
…		…
2500		3226
2501	mn_now = ev_rt_now;	3227	mn_now = ev_rt_now;
2502	}	3228	}
2503	}	3229	}
2504		3230
2505	void	3231	int
2506	ev_run (EV_P_ int flags)	3232	ev_run (EV_P_ int flags)
2507	{	3233	{
2508	#if EV_FEATURE_API	3234	#if EV_FEATURE_API
2509	++loop_depth;	3235	++loop_depth;
2510	#endif	3236	#endif
…		…
2571	time_update (EV_A_ 1e100);	3297	time_update (EV_A_ 1e100);
2572		3298
2573	/* from now on, we want a pipe-wake-up */	3299	/* from now on, we want a pipe-wake-up */
2574	pipe_write_wanted = 1;	3300	pipe_write_wanted = 1;
2575		3301
		3302	ECB_MEMORY_FENCE; /* make sure pipe_write_wanted is visible before we check for potential skips */
		3303
2576	if (expect_true (!(flags & EVRUN_NOWAIT || idleall || !activecnt || pipe_write_skipped)))	3304	if (expect_true (!(flags & EVRUN_NOWAIT || idleall || !activecnt || pipe_write_skipped)))
2577	{	3305	{
2578	waittime = MAX_BLOCKTIME;	3306	waittime = MAX_BLOCKTIME;
2579		3307
2580	if (timercnt)	3308	if (timercnt)
…		…
2621	#endif	3349	#endif
2622	assert ((loop_done = EVBREAK_RECURSE, 1)); /* assert for side effect */	3350	assert ((loop_done = EVBREAK_RECURSE, 1)); /* assert for side effect */
2623	backend_poll (EV_A_ waittime);	3351	backend_poll (EV_A_ waittime);
2624	assert ((loop_done = EVBREAK_CANCEL, 1)); /* assert for side effect */	3352	assert ((loop_done = EVBREAK_CANCEL, 1)); /* assert for side effect */
2625		3353
2626	pipe_write_wanted = 0;	3354	pipe_write_wanted = 0; /* just an optimisation, no fence needed */
2627		3355
		3356	ECB_MEMORY_FENCE_ACQUIRE;
2628	if (pipe_write_skipped)	3357	if (pipe_write_skipped)
2629	{	3358	{
2630	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)));
2631	ev_feed_event (EV_A_ &pipe_w, EV_CUSTOM);	3360	ev_feed_event (EV_A_ &pipe_w, EV_CUSTOM);
2632	}	3361	}
…		…
2665	loop_done = EVBREAK_CANCEL;	3394	loop_done = EVBREAK_CANCEL;
2666		3395
2667	#if EV_FEATURE_API	3396	#if EV_FEATURE_API
2668	--loop_depth;	3397	--loop_depth;
2669	#endif	3398	#endif
		3399
		3400	return activecnt;
2670	}	3401	}
2671		3402
2672	void	3403	void
2673	ev_break (EV_P_ int how)	3404	ev_break (EV_P_ int how) EV_THROW
2674	{	3405	{
2675	loop_done = how;	3406	loop_done = how;
2676	}	3407	}
2677		3408
2678	void	3409	void
2679	ev_ref (EV_P)	3410	ev_ref (EV_P) EV_THROW
2680	{	3411	{
2681	++activecnt;	3412	++activecnt;
2682	}	3413	}
2683		3414
2684	void	3415	void
2685	ev_unref (EV_P)	3416	ev_unref (EV_P) EV_THROW
2686	{	3417	{
2687	--activecnt;	3418	--activecnt;
2688	}	3419	}
2689		3420
2690	void	3421	void
2691	ev_now_update (EV_P)	3422	ev_now_update (EV_P) EV_THROW
2692	{	3423	{
2693	time_update (EV_A_ 1e100);	3424	time_update (EV_A_ 1e100);
2694	}	3425	}
2695		3426
2696	void	3427	void
2697	ev_suspend (EV_P)	3428	ev_suspend (EV_P) EV_THROW
2698	{	3429	{
2699	ev_now_update (EV_A);	3430	ev_now_update (EV_A);
2700	}	3431	}
2701		3432
2702	void	3433	void
2703	ev_resume (EV_P)	3434	ev_resume (EV_P) EV_THROW
2704	{	3435	{
2705	ev_tstamp mn_prev = mn_now;	3436	ev_tstamp mn_prev = mn_now;
2706		3437
2707	ev_now_update (EV_A);	3438	ev_now_update (EV_A);
2708	timers_reschedule (EV_A_ mn_now - mn_prev);	3439	timers_reschedule (EV_A_ mn_now - mn_prev);
…		…
2747	w->pending = 0;	3478	w->pending = 0;
2748	}	3479	}
2749	}	3480	}
2750		3481
2751	int	3482	int
2752	ev_clear_pending (EV_P_ void *w)	3483	ev_clear_pending (EV_P_ void *w) EV_THROW
2753	{	3484	{
2754	W w_ = (W)w;	3485	W w_ = (W)w;
2755	int pending = w_->pending;	3486	int pending = w_->pending;
2756		3487
2757	if (expect_true (pending))	3488	if (expect_true (pending))
…		…
2790	}	3521	}
2791		3522
2792	/*****************************************************************************/	3523	/*****************************************************************************/
2793		3524
2794	void noinline	3525	void noinline
2795	ev_io_start (EV_P_ ev_io *w)	3526	ev_io_start (EV_P_ ev_io *w) EV_THROW
2796	{	3527	{
2797	int fd = w->fd;	3528	int fd = w->fd;
2798		3529
2799	if (expect_false (ev_is_active (w)))	3530	if (expect_false (ev_is_active (w)))
2800	return;	3531	return;
…		…
2806		3537
2807	ev_start (EV_A_ (W)w, 1);	3538	ev_start (EV_A_ (W)w, 1);
2808	array_needsize (ANFD, anfds, anfdmax, fd + 1, array_init_zero);	3539	array_needsize (ANFD, anfds, anfdmax, fd + 1, array_init_zero);
2809	wlist_add (&anfds[fd].head, (WL)w);	3540	wlist_add (&anfds[fd].head, (WL)w);
2810		3541
		3542	/* common bug, apparently */
		3543	assert (("libev: ev_io_start called with corrupted watcher", ((WL)w)->next != (WL)w));
		3544
2811	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);
2812	w->events &= ~EV__IOFDSET;	3546	w->events &= ~EV__IOFDSET;
2813		3547
2814	EV_FREQUENT_CHECK;	3548	EV_FREQUENT_CHECK;
2815	}	3549	}
2816		3550
2817	void noinline	3551	void noinline
2818	ev_io_stop (EV_P_ ev_io *w)	3552	ev_io_stop (EV_P_ ev_io *w) EV_THROW
2819	{	3553	{
2820	clear_pending (EV_A_ (W)w);	3554	clear_pending (EV_A_ (W)w);
2821	if (expect_false (!ev_is_active (w)))	3555	if (expect_false (!ev_is_active (w)))
2822	return;	3556	return;
2823		3557
…		…
2832		3566
2833	EV_FREQUENT_CHECK;	3567	EV_FREQUENT_CHECK;
2834	}	3568	}
2835		3569
2836	void noinline	3570	void noinline
2837	ev_timer_start (EV_P_ ev_timer *w)	3571	ev_timer_start (EV_P_ ev_timer *w) EV_THROW
2838	{	3572	{
2839	if (expect_false (ev_is_active (w)))	3573	if (expect_false (ev_is_active (w)))
2840	return;	3574	return;
2841		3575
2842	ev_at (w) += mn_now;	3576	ev_at (w) += mn_now;
…		…
2856		3590
2857	/*assert (("libev: internal timer heap corruption", timers [ev_active (w)] == (WT)w));*/	3591	/*assert (("libev: internal timer heap corruption", timers [ev_active (w)] == (WT)w));*/
2858	}	3592	}
2859		3593
2860	void noinline	3594	void noinline
2861	ev_timer_stop (EV_P_ ev_timer *w)	3595	ev_timer_stop (EV_P_ ev_timer *w) EV_THROW
2862	{	3596	{
2863	clear_pending (EV_A_ (W)w);	3597	clear_pending (EV_A_ (W)w);
2864	if (expect_false (!ev_is_active (w)))	3598	if (expect_false (!ev_is_active (w)))
2865	return;	3599	return;
2866		3600
…		…
2886		3620
2887	EV_FREQUENT_CHECK;	3621	EV_FREQUENT_CHECK;
2888	}	3622	}
2889		3623
2890	void noinline	3624	void noinline
2891	ev_timer_again (EV_P_ ev_timer *w)	3625	ev_timer_again (EV_P_ ev_timer *w) EV_THROW
2892	{	3626	{
2893	EV_FREQUENT_CHECK;	3627	EV_FREQUENT_CHECK;
		3628
		3629	clear_pending (EV_A_ (W)w);
2894		3630
2895	if (ev_is_active (w))	3631	if (ev_is_active (w))
2896	{	3632	{
2897	if (w->repeat)	3633	if (w->repeat)
2898	{	3634	{
…		…
2911		3647
2912	EV_FREQUENT_CHECK;	3648	EV_FREQUENT_CHECK;
2913	}	3649	}
2914		3650
2915	ev_tstamp	3651	ev_tstamp
2916	ev_timer_remaining (EV_P_ ev_timer *w)	3652	ev_timer_remaining (EV_P_ ev_timer *w) EV_THROW
2917	{	3653	{
2918	return ev_at (w) - (ev_is_active (w) ? mn_now : 0.);	3654	return ev_at (w) - (ev_is_active (w) ? mn_now : 0.);
2919	}	3655	}
2920		3656
2921	#if EV_PERIODIC_ENABLE	3657	#if EV_PERIODIC_ENABLE
2922	void noinline	3658	void noinline
2923	ev_periodic_start (EV_P_ ev_periodic *w)	3659	ev_periodic_start (EV_P_ ev_periodic *w) EV_THROW
2924	{	3660	{
2925	if (expect_false (ev_is_active (w)))	3661	if (expect_false (ev_is_active (w)))
2926	return;	3662	return;
2927		3663
2928	if (w->reschedule_cb)	3664	if (w->reschedule_cb)
…		…
2948		3684
2949	/*assert (("libev: internal periodic heap corruption", ANHE_w (periodics [ev_active (w)]) == (WT)w));*/	3685	/*assert (("libev: internal periodic heap corruption", ANHE_w (periodics [ev_active (w)]) == (WT)w));*/
2950	}	3686	}
2951		3687
2952	void noinline	3688	void noinline
2953	ev_periodic_stop (EV_P_ ev_periodic *w)	3689	ev_periodic_stop (EV_P_ ev_periodic *w) EV_THROW
2954	{	3690	{
2955	clear_pending (EV_A_ (W)w);	3691	clear_pending (EV_A_ (W)w);
2956	if (expect_false (!ev_is_active (w)))	3692	if (expect_false (!ev_is_active (w)))
2957	return;	3693	return;
2958		3694
…		…
2976		3712
2977	EV_FREQUENT_CHECK;	3713	EV_FREQUENT_CHECK;
2978	}	3714	}
2979		3715
2980	void noinline	3716	void noinline
2981	ev_periodic_again (EV_P_ ev_periodic *w)	3717	ev_periodic_again (EV_P_ ev_periodic *w) EV_THROW
2982	{	3718	{
2983	/* TODO: use adjustheap and recalculation */	3719	/* TODO: use adjustheap and recalculation */
2984	ev_periodic_stop (EV_A_ w);	3720	ev_periodic_stop (EV_A_ w);
2985	ev_periodic_start (EV_A_ w);	3721	ev_periodic_start (EV_A_ w);
2986	}	3722	}
…		…
2991	#endif	3727	#endif
2992		3728
2993	#if EV_SIGNAL_ENABLE	3729	#if EV_SIGNAL_ENABLE
2994		3730
2995	void noinline	3731	void noinline
2996	ev_signal_start (EV_P_ ev_signal *w)	3732	ev_signal_start (EV_P_ ev_signal *w) EV_THROW
2997	{	3733	{
2998	if (expect_false (ev_is_active (w)))	3734	if (expect_false (ev_is_active (w)))
2999	return;	3735	return;
3000		3736
3001	assert (("libev: ev_signal_start called with illegal signal number", w->signum > 0 && w->signum < EV_NSIG));	3737	assert (("libev: ev_signal_start called with illegal signal number", w->signum > 0 && w->signum < EV_NSIG));
…		…
3003	#if EV_MULTIPLICITY	3739	#if EV_MULTIPLICITY
3004	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",
3005	!signals [w->signum - 1].loop || signals [w->signum - 1].loop == loop));	3741	!signals [w->signum - 1].loop || signals [w->signum - 1].loop == loop));
3006		3742
3007	signals [w->signum - 1].loop = EV_A;	3743	signals [w->signum - 1].loop = EV_A;
		3744	ECB_MEMORY_FENCE_RELEASE;
3008	#endif	3745	#endif
3009		3746
3010	EV_FREQUENT_CHECK;	3747	EV_FREQUENT_CHECK;
3011		3748
3012	#if EV_USE_SIGNALFD	3749	#if EV_USE_SIGNALFD
…		…
3072		3809
3073	EV_FREQUENT_CHECK;	3810	EV_FREQUENT_CHECK;
3074	}	3811	}
3075		3812
3076	void noinline	3813	void noinline
3077	ev_signal_stop (EV_P_ ev_signal *w)	3814	ev_signal_stop (EV_P_ ev_signal *w) EV_THROW
3078	{	3815	{
3079	clear_pending (EV_A_ (W)w);	3816	clear_pending (EV_A_ (W)w);
3080	if (expect_false (!ev_is_active (w)))	3817	if (expect_false (!ev_is_active (w)))
3081	return;	3818	return;
3082		3819
…		…
3113	#endif	3850	#endif
3114		3851
3115	#if EV_CHILD_ENABLE	3852	#if EV_CHILD_ENABLE
3116		3853
3117	void	3854	void
3118	ev_child_start (EV_P_ ev_child *w)	3855	ev_child_start (EV_P_ ev_child *w) EV_THROW
3119	{	3856	{
3120	#if EV_MULTIPLICITY	3857	#if EV_MULTIPLICITY
3121	assert (("libev: child watchers are only supported in the default loop", loop == ev_default_loop_ptr));	3858	assert (("libev: child watchers are only supported in the default loop", loop == ev_default_loop_ptr));
3122	#endif	3859	#endif
3123	if (expect_false (ev_is_active (w)))	3860	if (expect_false (ev_is_active (w)))
…		…
3130		3867
3131	EV_FREQUENT_CHECK;	3868	EV_FREQUENT_CHECK;
3132	}	3869	}
3133		3870
3134	void	3871	void
3135	ev_child_stop (EV_P_ ev_child *w)	3872	ev_child_stop (EV_P_ ev_child *w) EV_THROW
3136	{	3873	{
3137	clear_pending (EV_A_ (W)w);	3874	clear_pending (EV_A_ (W)w);
3138	if (expect_false (!ev_is_active (w)))	3875	if (expect_false (!ev_is_active (w)))
3139	return;	3876	return;
3140		3877
…		…
3167	# define EV_INOTIFY_BUFSIZE (sizeof (struct inotify_event) * 2 + NAME_MAX)	3904	# define EV_INOTIFY_BUFSIZE (sizeof (struct inotify_event) * 2 + NAME_MAX)
3168		3905
3169	static void noinline	3906	static void noinline
3170	infy_add (EV_P_ ev_stat *w)	3907	infy_add (EV_P_ ev_stat *w)
3171	{	3908	{
3172	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);
3173		3913
3174	if (w->wd >= 0)	3914	if (w->wd >= 0)
3175	{	3915	{
3176	struct statfs sfs;	3916	struct statfs sfs;
3177		3917
…		…
3181		3921
3182	if (!fs_2625)	3922	if (!fs_2625)
3183	w->timer.repeat = w->interval ? w->interval : DEF_STAT_INTERVAL;	3923	w->timer.repeat = w->interval ? w->interval : DEF_STAT_INTERVAL;
3184	else if (!statfs (w->path, &sfs)	3924	else if (!statfs (w->path, &sfs)
3185	&& (sfs.f_type == 0x1373 /* devfs */	3925	&& (sfs.f_type == 0x1373 /* devfs */
		3926	|| sfs.f_type == 0x4006 /* fat */
		3927	|| sfs.f_type == 0x4d44 /* msdos */
3186	|| 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 */
3187	|| sfs.f_type == 0x3153464a /* jfs */	3932	|| sfs.f_type == 0x3153464a /* jfs */
		3933	|| sfs.f_type == 0x9123683e /* btrfs */
3188	|| sfs.f_type == 0x52654973 /* reiser3 */	3934	|| sfs.f_type == 0x52654973 /* reiser3 */
3189	|| sfs.f_type == 0x01021994 /* tempfs */	3935	|| sfs.f_type == 0x01021994 /* tmpfs */
3190	|| sfs.f_type == 0x58465342 /* xfs */))	3936	|| sfs.f_type == 0x58465342 /* xfs */))
3191	w->timer.repeat = 0.; /* filesystem is local, kernel new enough */	3937	w->timer.repeat = 0.; /* filesystem is local, kernel new enough */
3192	else	3938	else
3193	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 */
3194	}	3940	}
…		…
3307	}	4053	}
3308		4054
3309	inline_size int	4055	inline_size int
3310	infy_newfd (void)	4056	infy_newfd (void)
3311	{	4057	{
3312	#if defined (IN_CLOEXEC) && defined (IN_NONBLOCK)	4058	#if defined IN_CLOEXEC && defined IN_NONBLOCK
3313	int fd = inotify_init1 (IN_CLOEXEC | IN_NONBLOCK);	4059	int fd = inotify_init1 (IN_CLOEXEC | IN_NONBLOCK);
3314	if (fd >= 0)	4060	if (fd >= 0)
3315	return fd;	4061	return fd;
3316	#endif	4062	#endif
3317	return inotify_init ();	4063	return inotify_init ();
…		…
3392	#else	4138	#else
3393	# define EV_LSTAT(p,b) lstat (p, b)	4139	# define EV_LSTAT(p,b) lstat (p, b)
3394	#endif	4140	#endif
3395		4141
3396	void	4142	void
3397	ev_stat_stat (EV_P_ ev_stat *w)	4143	ev_stat_stat (EV_P_ ev_stat *w) EV_THROW
3398	{	4144	{
3399	if (lstat (w->path, &w->attr) < 0)	4145	if (lstat (w->path, &w->attr) < 0)
3400	w->attr.st_nlink = 0;	4146	w->attr.st_nlink = 0;
3401	else if (!w->attr.st_nlink)	4147	else if (!w->attr.st_nlink)
3402	w->attr.st_nlink = 1;	4148	w->attr.st_nlink = 1;
…		…
3441	ev_feed_event (EV_A_ w, EV_STAT);	4187	ev_feed_event (EV_A_ w, EV_STAT);
3442	}	4188	}
3443	}	4189	}
3444		4190
3445	void	4191	void
3446	ev_stat_start (EV_P_ ev_stat *w)	4192	ev_stat_start (EV_P_ ev_stat *w) EV_THROW
3447	{	4193	{
3448	if (expect_false (ev_is_active (w)))	4194	if (expect_false (ev_is_active (w)))
3449	return;	4195	return;
3450		4196
3451	ev_stat_stat (EV_A_ w);	4197	ev_stat_stat (EV_A_ w);
…		…
3472		4218
3473	EV_FREQUENT_CHECK;	4219	EV_FREQUENT_CHECK;
3474	}	4220	}
3475		4221
3476	void	4222	void
3477	ev_stat_stop (EV_P_ ev_stat *w)	4223	ev_stat_stop (EV_P_ ev_stat *w) EV_THROW
3478	{	4224	{
3479	clear_pending (EV_A_ (W)w);	4225	clear_pending (EV_A_ (W)w);
3480	if (expect_false (!ev_is_active (w)))	4226	if (expect_false (!ev_is_active (w)))
3481	return;	4227	return;
3482		4228
…		…
3498	}	4244	}
3499	#endif	4245	#endif
3500		4246
3501	#if EV_IDLE_ENABLE	4247	#if EV_IDLE_ENABLE
3502	void	4248	void
3503	ev_idle_start (EV_P_ ev_idle *w)	4249	ev_idle_start (EV_P_ ev_idle *w) EV_THROW
3504	{	4250	{
3505	if (expect_false (ev_is_active (w)))	4251	if (expect_false (ev_is_active (w)))
3506	return;	4252	return;
3507		4253
3508	pri_adjust (EV_A_ (W)w);	4254	pri_adjust (EV_A_ (W)w);
…		…
3521		4267
3522	EV_FREQUENT_CHECK;	4268	EV_FREQUENT_CHECK;
3523	}	4269	}
3524		4270
3525	void	4271	void
3526	ev_idle_stop (EV_P_ ev_idle *w)	4272	ev_idle_stop (EV_P_ ev_idle *w) EV_THROW
3527	{	4273	{
3528	clear_pending (EV_A_ (W)w);	4274	clear_pending (EV_A_ (W)w);
3529	if (expect_false (!ev_is_active (w)))	4275	if (expect_false (!ev_is_active (w)))
3530	return;	4276	return;
3531		4277
…		…
3545	}	4291	}
3546	#endif	4292	#endif
3547		4293
3548	#if EV_PREPARE_ENABLE	4294	#if EV_PREPARE_ENABLE
3549	void	4295	void
3550	ev_prepare_start (EV_P_ ev_prepare *w)	4296	ev_prepare_start (EV_P_ ev_prepare *w) EV_THROW
3551	{	4297	{
3552	if (expect_false (ev_is_active (w)))	4298	if (expect_false (ev_is_active (w)))
3553	return;	4299	return;
3554		4300
3555	EV_FREQUENT_CHECK;	4301	EV_FREQUENT_CHECK;
…		…
3560		4306
3561	EV_FREQUENT_CHECK;	4307	EV_FREQUENT_CHECK;
3562	}	4308	}
3563		4309
3564	void	4310	void
3565	ev_prepare_stop (EV_P_ ev_prepare *w)	4311	ev_prepare_stop (EV_P_ ev_prepare *w) EV_THROW
3566	{	4312	{
3567	clear_pending (EV_A_ (W)w);	4313	clear_pending (EV_A_ (W)w);
3568	if (expect_false (!ev_is_active (w)))	4314	if (expect_false (!ev_is_active (w)))
3569	return;	4315	return;
3570		4316
…		…
3583	}	4329	}
3584	#endif	4330	#endif
3585		4331
3586	#if EV_CHECK_ENABLE	4332	#if EV_CHECK_ENABLE
3587	void	4333	void
3588	ev_check_start (EV_P_ ev_check *w)	4334	ev_check_start (EV_P_ ev_check *w) EV_THROW
3589	{	4335	{
3590	if (expect_false (ev_is_active (w)))	4336	if (expect_false (ev_is_active (w)))
3591	return;	4337	return;
3592		4338
3593	EV_FREQUENT_CHECK;	4339	EV_FREQUENT_CHECK;
…		…
3598		4344
3599	EV_FREQUENT_CHECK;	4345	EV_FREQUENT_CHECK;
3600	}	4346	}
3601		4347
3602	void	4348	void
3603	ev_check_stop (EV_P_ ev_check *w)	4349	ev_check_stop (EV_P_ ev_check *w) EV_THROW
3604	{	4350	{
3605	clear_pending (EV_A_ (W)w);	4351	clear_pending (EV_A_ (W)w);
3606	if (expect_false (!ev_is_active (w)))	4352	if (expect_false (!ev_is_active (w)))
3607	return;	4353	return;
3608		4354
…		…
3621	}	4367	}
3622	#endif	4368	#endif
3623		4369
3624	#if EV_EMBED_ENABLE	4370	#if EV_EMBED_ENABLE
3625	void noinline	4371	void noinline
3626	ev_embed_sweep (EV_P_ ev_embed *w)	4372	ev_embed_sweep (EV_P_ ev_embed *w) EV_THROW
3627	{	4373	{
3628	ev_run (w->other, EVRUN_NOWAIT);	4374	ev_run (w->other, EVRUN_NOWAIT);
3629	}	4375	}
3630		4376
3631	static void	4377	static void
…		…
3679	ev_idle_stop (EV_A_ idle);	4425	ev_idle_stop (EV_A_ idle);
3680	}	4426	}
3681	#endif	4427	#endif
3682		4428
3683	void	4429	void
3684	ev_embed_start (EV_P_ ev_embed *w)	4430	ev_embed_start (EV_P_ ev_embed *w) EV_THROW
3685	{	4431	{
3686	if (expect_false (ev_is_active (w)))	4432	if (expect_false (ev_is_active (w)))
3687	return;	4433	return;
3688		4434
3689	{	4435	{
…		…
3710		4456
3711	EV_FREQUENT_CHECK;	4457	EV_FREQUENT_CHECK;
3712	}	4458	}
3713		4459
3714	void	4460	void
3715	ev_embed_stop (EV_P_ ev_embed *w)	4461	ev_embed_stop (EV_P_ ev_embed *w) EV_THROW
3716	{	4462	{
3717	clear_pending (EV_A_ (W)w);	4463	clear_pending (EV_A_ (W)w);
3718	if (expect_false (!ev_is_active (w)))	4464	if (expect_false (!ev_is_active (w)))
3719	return;	4465	return;
3720		4466
…		…
3730	}	4476	}
3731	#endif	4477	#endif
3732		4478
3733	#if EV_FORK_ENABLE	4479	#if EV_FORK_ENABLE
3734	void	4480	void
3735	ev_fork_start (EV_P_ ev_fork *w)	4481	ev_fork_start (EV_P_ ev_fork *w) EV_THROW
3736	{	4482	{
3737	if (expect_false (ev_is_active (w)))	4483	if (expect_false (ev_is_active (w)))
3738	return;	4484	return;
3739		4485
3740	EV_FREQUENT_CHECK;	4486	EV_FREQUENT_CHECK;
…		…
3745		4491
3746	EV_FREQUENT_CHECK;	4492	EV_FREQUENT_CHECK;
3747	}	4493	}
3748		4494
3749	void	4495	void
3750	ev_fork_stop (EV_P_ ev_fork *w)	4496	ev_fork_stop (EV_P_ ev_fork *w) EV_THROW
3751	{	4497	{
3752	clear_pending (EV_A_ (W)w);	4498	clear_pending (EV_A_ (W)w);
3753	if (expect_false (!ev_is_active (w)))	4499	if (expect_false (!ev_is_active (w)))
3754	return;	4500	return;
3755		4501
…		…
3768	}	4514	}
3769	#endif	4515	#endif
3770		4516
3771	#if EV_CLEANUP_ENABLE	4517	#if EV_CLEANUP_ENABLE
3772	void	4518	void
3773	ev_cleanup_start (EV_P_ ev_cleanup *w)	4519	ev_cleanup_start (EV_P_ ev_cleanup *w) EV_THROW
3774	{	4520	{
3775	if (expect_false (ev_is_active (w)))	4521	if (expect_false (ev_is_active (w)))
3776	return;	4522	return;
3777		4523
3778	EV_FREQUENT_CHECK;	4524	EV_FREQUENT_CHECK;
…		…
3785	ev_unref (EV_A);	4531	ev_unref (EV_A);
3786	EV_FREQUENT_CHECK;	4532	EV_FREQUENT_CHECK;
3787	}	4533	}
3788		4534
3789	void	4535	void
3790	ev_cleanup_stop (EV_P_ ev_cleanup *w)	4536	ev_cleanup_stop (EV_P_ ev_cleanup *w) EV_THROW
3791	{	4537	{
3792	clear_pending (EV_A_ (W)w);	4538	clear_pending (EV_A_ (W)w);
3793	if (expect_false (!ev_is_active (w)))	4539	if (expect_false (!ev_is_active (w)))
3794	return;	4540	return;
3795		4541
…		…
3809	}	4555	}
3810	#endif	4556	#endif
3811		4557
3812	#if EV_ASYNC_ENABLE	4558	#if EV_ASYNC_ENABLE
3813	void	4559	void
3814	ev_async_start (EV_P_ ev_async *w)	4560	ev_async_start (EV_P_ ev_async *w) EV_THROW
3815	{	4561	{
3816	if (expect_false (ev_is_active (w)))	4562	if (expect_false (ev_is_active (w)))
3817	return;	4563	return;
3818		4564
3819	w->sent = 0;	4565	w->sent = 0;
…		…
3828		4574
3829	EV_FREQUENT_CHECK;	4575	EV_FREQUENT_CHECK;
3830	}	4576	}
3831		4577
3832	void	4578	void
3833	ev_async_stop (EV_P_ ev_async *w)	4579	ev_async_stop (EV_P_ ev_async *w) EV_THROW
3834	{	4580	{
3835	clear_pending (EV_A_ (W)w);	4581	clear_pending (EV_A_ (W)w);
3836	if (expect_false (!ev_is_active (w)))	4582	if (expect_false (!ev_is_active (w)))
3837	return;	4583	return;
3838		4584
…		…
3849		4595
3850	EV_FREQUENT_CHECK;	4596	EV_FREQUENT_CHECK;
3851	}	4597	}
3852		4598
3853	void	4599	void
3854	ev_async_send (EV_P_ ev_async *w)	4600	ev_async_send (EV_P_ ev_async *w) EV_THROW
3855	{	4601	{
3856	w->sent = 1;	4602	w->sent = 1;
3857	evpipe_write (EV_A_ &async_pending);	4603	evpipe_write (EV_A_ &async_pending);
3858	}	4604	}
3859	#endif	4605	#endif
…		…
3896		4642
3897	once_cb (EV_A_ once, revents | ev_clear_pending (EV_A_ &once->io));	4643	once_cb (EV_A_ once, revents | ev_clear_pending (EV_A_ &once->io));
3898	}	4644	}
3899		4645
3900	void	4646	void
3901	ev_once (EV_P_ int fd, int events, ev_tstamp timeout, void (*cb)(int revents, void *arg), void *arg)	4647	ev_once (EV_P_ int fd, int events, ev_tstamp timeout, void (*cb)(int revents, void *arg), void *arg) EV_THROW
3902	{	4648	{
3903	struct ev_once *once = (struct ev_once *)ev_malloc (sizeof (struct ev_once));	4649	struct ev_once *once = (struct ev_once *)ev_malloc (sizeof (struct ev_once));
3904		4650
3905	if (expect_false (!once))	4651	if (expect_false (!once))
3906	{	4652	{
…		…
3928		4674
3929	/*****************************************************************************/	4675	/*****************************************************************************/
3930		4676
3931	#if EV_WALK_ENABLE	4677	#if EV_WALK_ENABLE
3932	void ecb_cold	4678	void ecb_cold
3933	ev_walk (EV_P_ int types, void (*cb)(EV_P_ int type, void *w))	4679	ev_walk (EV_P_ int types, void (*cb)(EV_P_ int type, void *w)) EV_THROW
3934	{	4680	{
3935	int i, j;	4681	int i, j;
3936	ev_watcher_list *wl, *wn;	4682	ev_watcher_list *wl, *wn;
3937		4683
3938	if (types & (EV_IO | EV_EMBED))	4684	if (types & (EV_IO | EV_EMBED))
…		…
3981	cb (EV_A_ EV_PERIODIC, ANHE_w (periodics [i]));	4727	cb (EV_A_ EV_PERIODIC, ANHE_w (periodics [i]));
3982	#endif	4728	#endif
3983		4729
3984	#if EV_IDLE_ENABLE	4730	#if EV_IDLE_ENABLE
3985	if (types & EV_IDLE)	4731	if (types & EV_IDLE)
3986	for (j = NUMPRI; i--; )	4732	for (j = NUMPRI; j--; )
3987	for (i = idlecnt [j]; i--; )	4733	for (i = idlecnt [j]; i--; )
3988	cb (EV_A_ EV_IDLE, idles [j][i]);	4734	cb (EV_A_ EV_IDLE, idles [j][i]);
3989	#endif	4735	#endif
3990		4736
3991	#if EV_FORK_ENABLE	4737	#if EV_FORK_ENABLE
…		…
4044		4790
4045	#if EV_MULTIPLICITY	4791	#if EV_MULTIPLICITY
4046	#include "ev_wrap.h"	4792	#include "ev_wrap.h"
4047	#endif	4793	#endif
4048		4794
4049	EV_CPP(})
4050

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