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Comparing libev/ev.c (file contents):
Revision 1.374 by root, Sat Feb 26 15:21:01 2011 UTC vs.
Revision 1.480 by root, Thu Feb 18 04:48:05 2016 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) 2007,2008,2009,2010,2011,2012,2013 Marc Alexander Lehmann <libev@schmorp.de>
5	* All rights reserved.	5	* All rights reserved.
6	*	6	*
7	* Redistribution and use in source and binary forms, with or without modifica-	7	* Redistribution and use in source and binary forms, with or without modifica-
8	* tion, are permitted provided that the following conditions are met:	8	* tion, are permitted provided that the following conditions are met:
9	*	9	*
…		…
43	# include EV_CONFIG_H	43	# include EV_CONFIG_H
44	# else	44	# else
45	# include "config.h"	45	# include "config.h"
46	# endif	46	# endif
47		47
48	#if HAVE_FLOOR	48	# if HAVE_FLOOR
49	# ifndef EV_USE_FLOOR	49	# ifndef EV_USE_FLOOR
50	# define EV_USE_FLOOR 1	50	# define EV_USE_FLOOR 1
		51	# endif
51	# endif	52	# endif
52	#endif
53		53
54	# if HAVE_CLOCK_SYSCALL	54	# if HAVE_CLOCK_SYSCALL
55	# ifndef EV_USE_CLOCK_SYSCALL	55	# ifndef EV_USE_CLOCK_SYSCALL
56	# define EV_USE_CLOCK_SYSCALL 1	56	# define EV_USE_CLOCK_SYSCALL 1
57	# ifndef EV_USE_REALTIME	57	# ifndef EV_USE_REALTIME
…		…
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	# define EV_NSIG (8 * sizeof (sigset_t) + 1)
237	/* to make it compile regardless, just remove the above line, */
238	/* but consider reporting it, too! :) */
239	# define EV_NSIG 65
240	#endif	247	#endif
241		248
242	#ifndef EV_USE_FLOOR	249	#ifndef EV_USE_FLOOR
243	# define EV_USE_FLOOR 0	250	# define EV_USE_FLOOR 0
244	#endif	251	#endif
245		252
246	#ifndef EV_USE_CLOCK_SYSCALL	253	#ifndef EV_USE_CLOCK_SYSCALL
247	# if __linux && __GLIBC__ >= 2	254	# if __linux && __GLIBC__ == 2 && __GLIBC_MINOR__ < 17
248	# define EV_USE_CLOCK_SYSCALL EV_FEATURE_OS	255	# define EV_USE_CLOCK_SYSCALL EV_FEATURE_OS
249	# else	256	# else
250	# define EV_USE_CLOCK_SYSCALL 0	257	# define EV_USE_CLOCK_SYSCALL 0
251	# endif	258	# endif
252	#endif	259	#endif
253		260
		261	#if !(_POSIX_TIMERS > 0)
		262	# ifndef EV_USE_MONOTONIC
		263	# define EV_USE_MONOTONIC 0
		264	# endif
		265	# ifndef EV_USE_REALTIME
		266	# define EV_USE_REALTIME 0
		267	# endif
		268	#endif
		269
254	#ifndef EV_USE_MONOTONIC	270	#ifndef EV_USE_MONOTONIC
255	# if defined (_POSIX_MONOTONIC_CLOCK) && _POSIX_MONOTONIC_CLOCK >= 0	271	# if defined _POSIX_MONOTONIC_CLOCK && _POSIX_MONOTONIC_CLOCK >= 0
256	# define EV_USE_MONOTONIC EV_FEATURE_OS	272	# define EV_USE_MONOTONIC EV_FEATURE_OS
257	# else	273	# else
258	# define EV_USE_MONOTONIC 0	274	# define EV_USE_MONOTONIC 0
259	# endif	275	# endif
260	#endif	276	#endif
…		…
347		363
348	#ifndef EV_HEAP_CACHE_AT	364	#ifndef EV_HEAP_CACHE_AT
349	# define EV_HEAP_CACHE_AT EV_FEATURE_DATA	365	# define EV_HEAP_CACHE_AT EV_FEATURE_DATA
350	#endif	366	#endif
351		367
		368	#ifdef ANDROID
		369	/* supposedly, android doesn't typedef fd_mask */
		370	# undef EV_USE_SELECT
		371	# define EV_USE_SELECT 0
		372	/* supposedly, we need to include syscall.h, not sys/syscall.h, so just disable */
		373	# undef EV_USE_CLOCK_SYSCALL
		374	# define EV_USE_CLOCK_SYSCALL 0
		375	#endif
		376
		377	/* aix's poll.h seems to cause lots of trouble */
		378	#ifdef _AIX
		379	/* AIX has a completely broken poll.h header */
		380	# undef EV_USE_POLL
		381	# define EV_USE_POLL 0
		382	#endif
		383
352	/* on linux, we can use a (slow) syscall to avoid a dependency on pthread, */	384	/* on linux, we can use a (slow) syscall to avoid a dependency on pthread, */
353	/* which makes programs even slower. might work on other unices, too. */	385	/* which makes programs even slower. might work on other unices, too. */
354	#if EV_USE_CLOCK_SYSCALL	386	#if EV_USE_CLOCK_SYSCALL
355	# include <syscall.h>	387	# include <sys/syscall.h>
356	# ifdef SYS_clock_gettime	388	# ifdef SYS_clock_gettime
357	# define clock_gettime(id, ts) syscall (SYS_clock_gettime, (id), (ts))	389	# define clock_gettime(id, ts) syscall (SYS_clock_gettime, (id), (ts))
358	# undef EV_USE_MONOTONIC	390	# undef EV_USE_MONOTONIC
359	# define EV_USE_MONOTONIC 1	391	# define EV_USE_MONOTONIC 1
360	# else	392	# else
…		…
363	# endif	395	# endif
364	#endif	396	#endif
365		397
366	/* this block fixes any misconfiguration where we know we run into trouble otherwise */	398	/* this block fixes any misconfiguration where we know we run into trouble otherwise */
367		399
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	400	#ifndef CLOCK_MONOTONIC
375	# undef EV_USE_MONOTONIC	401	# undef EV_USE_MONOTONIC
376	# define EV_USE_MONOTONIC 0	402	# define EV_USE_MONOTONIC 0
377	#endif	403	#endif
378		404
…		…
386	# define EV_USE_INOTIFY 0	412	# define EV_USE_INOTIFY 0
387	#endif	413	#endif
388		414
389	#if !EV_USE_NANOSLEEP	415	#if !EV_USE_NANOSLEEP
390	/* hp-ux has it in sys/time.h, which we unconditionally include above */	416	/* hp-ux has it in sys/time.h, which we unconditionally include above */
391	# if !defined(_WIN32) && !defined(__hpux)	417	# if !defined _WIN32 && !defined __hpux
392	# include <sys/select.h>	418	# include <sys/select.h>
393	# endif	419	# endif
394	#endif	420	#endif
395		421
396	#if EV_USE_INOTIFY	422	#if EV_USE_INOTIFY
…		…
399	/* some very old inotify.h headers don't have IN_DONT_FOLLOW */	425	/* some very old inotify.h headers don't have IN_DONT_FOLLOW */
400	# ifndef IN_DONT_FOLLOW	426	# ifndef IN_DONT_FOLLOW
401	# undef EV_USE_INOTIFY	427	# undef EV_USE_INOTIFY
402	# define EV_USE_INOTIFY 0	428	# define EV_USE_INOTIFY 0
403	# endif	429	# endif
404	#endif
405
406	#if EV_SELECT_IS_WINSOCKET
407	# include <winsock.h>
408	#endif	430	#endif
409		431
410	#if EV_USE_EVENTFD	432	#if EV_USE_EVENTFD
411	/* our minimum requirement is glibc 2.7 which has the stub, but not the header */	433	/* our minimum requirement is glibc 2.7 which has the stub, but not the header */
412	# include <stdint.h>	434	# include <stdint.h>
…		…
464	#define MAX_BLOCKTIME 59.743 /* never wait longer than this time (to detect time jumps) */	486	#define MAX_BLOCKTIME 59.743 /* never wait longer than this time (to detect time jumps) */
465		487
466	#define EV_TV_SET(tv,t) do { tv.tv_sec = (long)t; tv.tv_usec = (long)((t - tv.tv_sec) * 1e6); } while (0)	488	#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)	489	#define EV_TS_SET(ts,t) do { ts.tv_sec = (long)t; ts.tv_nsec = (long)((t - ts.tv_sec) * 1e9); } while (0)
468		490
		491	/* the following is ecb.h embedded into libev - use update_ev_c to update from an external copy */
		492	/* ECB.H BEGIN */
		493	/*
		494	* libecb - http://software.schmorp.de/pkg/libecb
		495	*
		496	* Copyright (©) 2009-2015 Marc Alexander Lehmann <libecb@schmorp.de>
		497	* Copyright (©) 2011 Emanuele Giaquinta
		498	* All rights reserved.
		499	*
		500	* Redistribution and use in source and binary forms, with or without modifica-
		501	* tion, are permitted provided that the following conditions are met:
		502	*
		503	* 1. Redistributions of source code must retain the above copyright notice,
		504	* this list of conditions and the following disclaimer.
		505	*
		506	* 2. Redistributions in binary form must reproduce the above copyright
		507	* notice, this list of conditions and the following disclaimer in the
		508	* documentation and/or other materials provided with the distribution.
		509	*
		510	* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR IMPLIED
		511	* WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MER-
		512	* CHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO
		513	* EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPE-
		514	* CIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
		515	* PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS;
		516	* OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
		517	* WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTH-
		518	* ERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
		519	* OF THE POSSIBILITY OF SUCH DAMAGE.
		520	*
		521	* Alternatively, the contents of this file may be used under the terms of
		522	* the GNU General Public License ("GPL") version 2 or any later version,
		523	* in which case the provisions of the GPL are applicable instead of
		524	* the above. If you wish to allow the use of your version of this file
		525	* only under the terms of the GPL and not to allow others to use your
		526	* version of this file under the BSD license, indicate your decision
		527	* by deleting the provisions above and replace them with the notice
		528	* and other provisions required by the GPL. If you do not delete the
		529	* provisions above, a recipient may use your version of this file under
		530	* either the BSD or the GPL.
		531	*/
		532
		533	#ifndef ECB_H
		534	#define ECB_H
		535
		536	/* 16 bits major, 16 bits minor */
		537	#define ECB_VERSION 0x00010005
		538
		539	#ifdef _WIN32
		540	typedef signed char int8_t;
		541	typedef unsigned char uint8_t;
		542	typedef signed short int16_t;
		543	typedef unsigned short uint16_t;
		544	typedef signed int int32_t;
		545	typedef unsigned int uint32_t;
469	#if __GNUC__ >= 4	546	#if __GNUC__
		547	typedef signed long long int64_t;
		548	typedef unsigned long long uint64_t;
		549	#else /* _MSC_VER || __BORLANDC__ */
		550	typedef signed __int64 int64_t;
		551	typedef unsigned __int64 uint64_t;
		552	#endif
		553	#ifdef _WIN64
		554	#define ECB_PTRSIZE 8
		555	typedef uint64_t uintptr_t;
		556	typedef int64_t intptr_t;
		557	#else
		558	#define ECB_PTRSIZE 4
		559	typedef uint32_t uintptr_t;
		560	typedef int32_t intptr_t;
		561	#endif
		562	#else
		563	#include <inttypes.h>
		564	#if (defined INTPTR_MAX ? INTPTR_MAX : ULONG_MAX) > 0xffffffffU
		565	#define ECB_PTRSIZE 8
		566	#else
		567	#define ECB_PTRSIZE 4
		568	#endif
		569	#endif
		570
		571	#define ECB_GCC_AMD64 (__amd64 || __amd64__ || __x86_64 || __x86_64__)
		572	#define ECB_MSVC_AMD64 (_M_AMD64 || _M_X64)
		573
		574	/* work around x32 idiocy by defining proper macros */
		575	#if ECB_GCC_AMD64 || ECB_MSVC_AMD64
		576	#if _ILP32
		577	#define ECB_AMD64_X32 1
		578	#else
		579	#define ECB_AMD64 1
		580	#endif
		581	#endif
		582
		583	/* many compilers define _GNUC_ to some versions but then only implement
		584	* what their idiot authors think are the "more important" extensions,
		585	* causing enormous grief in return for some better fake benchmark numbers.
		586	* or so.
		587	* we try to detect these and simply assume they are not gcc - if they have
		588	* an issue with that they should have done it right in the first place.
		589	*/
		590	#if !defined __GNUC_MINOR__ || defined __INTEL_COMPILER || defined __SUNPRO_C || defined __SUNPRO_CC || defined __llvm__ || defined __clang__
		591	#define ECB_GCC_VERSION(major,minor) 0
		592	#else
		593	#define ECB_GCC_VERSION(major,minor) (__GNUC__ > (major) || (__GNUC__ == (major) && __GNUC_MINOR__ >= (minor)))
		594	#endif
		595
		596	#define ECB_CLANG_VERSION(major,minor) (__clang_major__ > (major) || (__clang_major__ == (major) && __clang_minor__ >= (minor)))
		597
		598	#if __clang__ && defined __has_builtin
		599	#define ECB_CLANG_BUILTIN(x) __has_builtin (x)
		600	#else
		601	#define ECB_CLANG_BUILTIN(x) 0
		602	#endif
		603
		604	#if __clang__ && defined __has_extension
		605	#define ECB_CLANG_EXTENSION(x) __has_extension (x)
		606	#else
		607	#define ECB_CLANG_EXTENSION(x) 0
		608	#endif
		609
		610	#define ECB_CPP (__cplusplus+0)
		611	#define ECB_CPP11 (__cplusplus >= 201103L)
		612
		613	#if ECB_CPP
		614	#define ECB_C 0
		615	#define ECB_STDC_VERSION 0
		616	#else
		617	#define ECB_C 1
		618	#define ECB_STDC_VERSION __STDC_VERSION__
		619	#endif
		620
		621	#define ECB_C99 (ECB_STDC_VERSION >= 199901L)
		622	#define ECB_C11 (ECB_STDC_VERSION >= 201112L)
		623
		624	#if ECB_CPP
		625	#define ECB_EXTERN_C extern "C"
		626	#define ECB_EXTERN_C_BEG ECB_EXTERN_C {
		627	#define ECB_EXTERN_C_END }
		628	#else
		629	#define ECB_EXTERN_C extern
		630	#define ECB_EXTERN_C_BEG
		631	#define ECB_EXTERN_C_END
		632	#endif
		633
		634	/*****************************************************************************/
		635
		636	/* ECB_NO_THREADS - ecb is not used by multiple threads, ever */
		637	/* ECB_NO_SMP - ecb might be used in multiple threads, but only on a single cpu */
		638
		639	#if ECB_NO_THREADS
		640	#define ECB_NO_SMP 1
		641	#endif
		642
		643	#if ECB_NO_SMP
		644	#define ECB_MEMORY_FENCE do { } while (0)
		645	#endif
		646
		647	/* http://www-01.ibm.com/support/knowledgecenter/SSGH3R_13.1.0/com.ibm.xlcpp131.aix.doc/compiler_ref/compiler_builtins.html */
		648	#if __xlC__ && ECB_CPP
		649	#include <builtins.h>
		650	#endif
		651
		652	#if 1400 <= _MSC_VER
		653	#include <intrin.h> /* fence functions _ReadBarrier, also bit search functions _BitScanReverse */
		654	#endif
		655
		656	#ifndef ECB_MEMORY_FENCE
		657	#if ECB_GCC_VERSION(2,5) || defined __INTEL_COMPILER || (__llvm__ && __GNUC__) || __SUNPRO_C >= 0x5110 || __SUNPRO_CC >= 0x5110
		658	#if __i386 || __i386__
		659	#define ECB_MEMORY_FENCE __asm__ __volatile__ ("lock; orb $0, -1(%%esp)" : : : "memory")
		660	#define ECB_MEMORY_FENCE_ACQUIRE __asm__ __volatile__ ("" : : : "memory")
		661	#define ECB_MEMORY_FENCE_RELEASE __asm__ __volatile__ ("")
		662	#elif ECB_GCC_AMD64
		663	#define ECB_MEMORY_FENCE __asm__ __volatile__ ("mfence" : : : "memory")
		664	#define ECB_MEMORY_FENCE_ACQUIRE __asm__ __volatile__ ("" : : : "memory")
		665	#define ECB_MEMORY_FENCE_RELEASE __asm__ __volatile__ ("")
		666	#elif __powerpc__ || __ppc__ || __powerpc64__ || __ppc64__
		667	#define ECB_MEMORY_FENCE __asm__ __volatile__ ("sync" : : : "memory")
		668	#elif defined __ARM_ARCH_2__ \
		669	|| defined __ARM_ARCH_3__ || defined __ARM_ARCH_3M__ \
		670	|| defined __ARM_ARCH_4__ || defined __ARM_ARCH_4T__ \
		671	|| defined __ARM_ARCH_5__ || defined __ARM_ARCH_5E__ \
		672	|| defined __ARM_ARCH_5T__ || defined __ARM_ARCH_5TE__ \
		673	|| defined __ARM_ARCH_5TEJ__
		674	/* should not need any, unless running old code on newer cpu - arm doesn't support that */
		675	#elif defined __ARM_ARCH_6__ || defined __ARM_ARCH_6J__ \
		676	|| defined __ARM_ARCH_6K__ || defined __ARM_ARCH_6ZK__ \
		677	|| defined __ARM_ARCH_6T2__
		678	#define ECB_MEMORY_FENCE __asm__ __volatile__ ("mcr p15,0,%0,c7,c10,5" : : "r" (0) : "memory")
		679	#elif defined __ARM_ARCH_7__ || defined __ARM_ARCH_7A__ \
		680	|| defined __ARM_ARCH_7R__ || defined __ARM_ARCH_7M__
		681	#define ECB_MEMORY_FENCE __asm__ __volatile__ ("dmb" : : : "memory")
		682	#elif __aarch64__
		683	#define ECB_MEMORY_FENCE __asm__ __volatile__ ("dmb ish" : : : "memory")
		684	#elif (__sparc || __sparc__) && !(__sparc_v8__ || defined __sparcv8)
		685	#define ECB_MEMORY_FENCE __asm__ __volatile__ ("membar #LoadStore | #LoadLoad | #StoreStore | #StoreLoad" : : : "memory")
		686	#define ECB_MEMORY_FENCE_ACQUIRE __asm__ __volatile__ ("membar #LoadStore | #LoadLoad" : : : "memory")
		687	#define ECB_MEMORY_FENCE_RELEASE __asm__ __volatile__ ("membar #LoadStore | #StoreStore")
		688	#elif defined __s390__ || defined __s390x__
		689	#define ECB_MEMORY_FENCE __asm__ __volatile__ ("bcr 15,0" : : : "memory")
		690	#elif defined __mips__
		691	/* GNU/Linux emulates sync on mips1 architectures, so we force its use */
		692	/* anybody else who still uses mips1 is supposed to send in their version, with detection code. */
		693	#define ECB_MEMORY_FENCE __asm__ __volatile__ (".set mips2; sync; .set mips0" : : : "memory")
		694	#elif defined __alpha__
		695	#define ECB_MEMORY_FENCE __asm__ __volatile__ ("mb" : : : "memory")
		696	#elif defined __hppa__
		697	#define ECB_MEMORY_FENCE __asm__ __volatile__ ("" : : : "memory")
		698	#define ECB_MEMORY_FENCE_RELEASE __asm__ __volatile__ ("")
		699	#elif defined __ia64__
		700	#define ECB_MEMORY_FENCE __asm__ __volatile__ ("mf" : : : "memory")
		701	#elif defined __m68k__
		702	#define ECB_MEMORY_FENCE __asm__ __volatile__ ("" : : : "memory")
		703	#elif defined __m88k__
		704	#define ECB_MEMORY_FENCE __asm__ __volatile__ ("tb1 0,%%r0,128" : : : "memory")
		705	#elif defined __sh__
		706	#define ECB_MEMORY_FENCE __asm__ __volatile__ ("" : : : "memory")
		707	#endif
		708	#endif
		709	#endif
		710
		711	#ifndef ECB_MEMORY_FENCE
		712	#if ECB_GCC_VERSION(4,7)
		713	/* see comment below (stdatomic.h) about the C11 memory model. */
		714	#define ECB_MEMORY_FENCE __atomic_thread_fence (__ATOMIC_SEQ_CST)
		715	#define ECB_MEMORY_FENCE_ACQUIRE __atomic_thread_fence (__ATOMIC_ACQUIRE)
		716	#define ECB_MEMORY_FENCE_RELEASE __atomic_thread_fence (__ATOMIC_RELEASE)
		717
		718	#elif ECB_CLANG_EXTENSION(c_atomic)
		719	/* see comment below (stdatomic.h) about the C11 memory model. */
		720	#define ECB_MEMORY_FENCE __c11_atomic_thread_fence (__ATOMIC_SEQ_CST)
		721	#define ECB_MEMORY_FENCE_ACQUIRE __c11_atomic_thread_fence (__ATOMIC_ACQUIRE)
		722	#define ECB_MEMORY_FENCE_RELEASE __c11_atomic_thread_fence (__ATOMIC_RELEASE)
		723
		724	#elif ECB_GCC_VERSION(4,4) || defined __INTEL_COMPILER || defined __clang__
		725	#define ECB_MEMORY_FENCE __sync_synchronize ()
		726	#elif _MSC_VER >= 1500 /* VC++ 2008 */
		727	/* apparently, microsoft broke all the memory barrier stuff in Visual Studio 2008... */
		728	#pragma intrinsic(_ReadBarrier,_WriteBarrier,_ReadWriteBarrier)
		729	#define ECB_MEMORY_FENCE _ReadWriteBarrier (); MemoryBarrier()
		730	#define ECB_MEMORY_FENCE_ACQUIRE _ReadWriteBarrier (); MemoryBarrier() /* according to msdn, _ReadBarrier is not a load fence */
		731	#define ECB_MEMORY_FENCE_RELEASE _WriteBarrier (); MemoryBarrier()
		732	#elif _MSC_VER >= 1400 /* VC++ 2005 */
		733	#pragma intrinsic(_ReadBarrier,_WriteBarrier,_ReadWriteBarrier)
		734	#define ECB_MEMORY_FENCE _ReadWriteBarrier ()
		735	#define ECB_MEMORY_FENCE_ACQUIRE _ReadWriteBarrier () /* according to msdn, _ReadBarrier is not a load fence */
		736	#define ECB_MEMORY_FENCE_RELEASE _WriteBarrier ()
		737	#elif defined _WIN32
		738	#include <WinNT.h>
		739	#define ECB_MEMORY_FENCE MemoryBarrier () /* actually just xchg on x86... scary */
		740	#elif __SUNPRO_C >= 0x5110 || __SUNPRO_CC >= 0x5110
		741	#include <mbarrier.h>
		742	#define ECB_MEMORY_FENCE __machine_rw_barrier ()
		743	#define ECB_MEMORY_FENCE_ACQUIRE __machine_r_barrier ()
		744	#define ECB_MEMORY_FENCE_RELEASE __machine_w_barrier ()
		745	#elif __xlC__
		746	#define ECB_MEMORY_FENCE __sync ()
		747	#endif
		748	#endif
		749
		750	#ifndef ECB_MEMORY_FENCE
		751	#if ECB_C11 && !defined __STDC_NO_ATOMICS__
		752	/* we assume that these memory fences work on all variables/all memory accesses, */
		753	/* not just C11 atomics and atomic accesses */
		754	#include <stdatomic.h>
		755	/* Unfortunately, neither gcc 4.7 nor clang 3.1 generate any instructions for */
		756	/* any fence other than seq_cst, which isn't very efficient for us. */
		757	/* Why that is, we don't know - either the C11 memory model is quite useless */
		758	/* for most usages, or gcc and clang have a bug */
		759	/* I *currently* lean towards the latter, and inefficiently implement */
		760	/* all three of ecb's fences as a seq_cst fence */
		761	/* Update, gcc-4.8 generates mfence for all c++ fences, but nothing */
		762	/* for all __atomic_thread_fence's except seq_cst */
		763	#define ECB_MEMORY_FENCE atomic_thread_fence (memory_order_seq_cst)
		764	#endif
		765	#endif
		766
		767	#ifndef ECB_MEMORY_FENCE
		768	#if !ECB_AVOID_PTHREADS
		769	/*
		770	* if you get undefined symbol references to pthread_mutex_lock,
		771	* or failure to find pthread.h, then you should implement
		772	* the ECB_MEMORY_FENCE operations for your cpu/compiler
		773	* OR provide pthread.h and link against the posix thread library
		774	* of your system.
		775	*/
		776	#include <pthread.h>
		777	#define ECB_NEEDS_PTHREADS 1
		778	#define ECB_MEMORY_FENCE_NEEDS_PTHREADS 1
		779
		780	static pthread_mutex_t ecb_mf_lock = PTHREAD_MUTEX_INITIALIZER;
		781	#define ECB_MEMORY_FENCE do { pthread_mutex_lock (&ecb_mf_lock); pthread_mutex_unlock (&ecb_mf_lock); } while (0)
		782	#endif
		783	#endif
		784
		785	#if !defined ECB_MEMORY_FENCE_ACQUIRE && defined ECB_MEMORY_FENCE
		786	#define ECB_MEMORY_FENCE_ACQUIRE ECB_MEMORY_FENCE
		787	#endif
		788
		789	#if !defined ECB_MEMORY_FENCE_RELEASE && defined ECB_MEMORY_FENCE
		790	#define ECB_MEMORY_FENCE_RELEASE ECB_MEMORY_FENCE
		791	#endif
		792
		793	/*****************************************************************************/
		794
		795	#if ECB_CPP
		796	#define ecb_inline static inline
		797	#elif ECB_GCC_VERSION(2,5)
		798	#define ecb_inline static __inline__
		799	#elif ECB_C99
		800	#define ecb_inline static inline
		801	#else
		802	#define ecb_inline static
		803	#endif
		804
		805	#if ECB_GCC_VERSION(3,3)
		806	#define ecb_restrict __restrict__
		807	#elif ECB_C99
		808	#define ecb_restrict restrict
		809	#else
		810	#define ecb_restrict
		811	#endif
		812
		813	typedef int ecb_bool;
		814
		815	#define ECB_CONCAT_(a, b) a ## b
		816	#define ECB_CONCAT(a, b) ECB_CONCAT_(a, b)
		817	#define ECB_STRINGIFY_(a) # a
		818	#define ECB_STRINGIFY(a) ECB_STRINGIFY_(a)
		819	#define ECB_STRINGIFY_EXPR(expr) ((expr), ECB_STRINGIFY_ (expr))
		820
		821	#define ecb_function_ ecb_inline
		822
		823	#if ECB_GCC_VERSION(3,1) || ECB_CLANG_VERSION(2,8)
		824	#define ecb_attribute(attrlist) __attribute__ (attrlist)
		825	#else
		826	#define ecb_attribute(attrlist)
		827	#endif
		828
		829	#if ECB_GCC_VERSION(3,1) || ECB_CLANG_BUILTIN(__builtin_constant_p)
		830	#define ecb_is_constant(expr) __builtin_constant_p (expr)
		831	#else
		832	/* possible C11 impl for integral types
		833	typedef struct ecb_is_constant_struct ecb_is_constant_struct;
		834	#define ecb_is_constant(expr) _Generic ((1 ? (struct ecb_is_constant_struct *)0 : (void *)((expr) - (expr)), ecb_is_constant_struct *: 0, default: 1)) */
		835
		836	#define ecb_is_constant(expr) 0
		837	#endif
		838
		839	#if ECB_GCC_VERSION(3,1) || ECB_CLANG_BUILTIN(__builtin_expect)
470	# define expect(expr,value) __builtin_expect ((expr),(value))	840	#define ecb_expect(expr,value) __builtin_expect ((expr),(value))
471	# define noinline __attribute__ ((noinline))
472	#else	841	#else
473	# define expect(expr,value) (expr)	842	#define ecb_expect(expr,value) (expr)
474	# define noinline
475	# if __STDC_VERSION__ < 199901L && __GNUC__ < 2
476	# define inline
477	# endif	843	#endif
478	#endif
479		844
		845	#if ECB_GCC_VERSION(3,1) || ECB_CLANG_BUILTIN(__builtin_prefetch)
		846	#define ecb_prefetch(addr,rw,locality) __builtin_prefetch (addr, rw, locality)
		847	#else
		848	#define ecb_prefetch(addr,rw,locality)
		849	#endif
		850
		851	/* no emulation for ecb_decltype */
		852	#if ECB_CPP11
		853	// older implementations might have problems with decltype(x)::type, work around it
		854	template<class T> struct ecb_decltype_t { typedef T type; };
		855	#define ecb_decltype(x) ecb_decltype_t<decltype (x)>::type
		856	#elif ECB_GCC_VERSION(3,0) || ECB_CLANG_VERSION(2,8)
		857	#define ecb_decltype(x) __typeof__ (x)
		858	#endif
		859
		860	#if _MSC_VER >= 1300
		861	#define ecb_deprecated __declspec (deprecated)
		862	#else
		863	#define ecb_deprecated ecb_attribute ((__deprecated__))
		864	#endif
		865
		866	#if _MSC_VER >= 1500
		867	#define ecb_deprecated_message(msg) __declspec (deprecated (msg))
		868	#elif ECB_GCC_VERSION(4,5)
		869	#define ecb_deprecated_message(msg) ecb_attribute ((__deprecated__ (msg))
		870	#else
		871	#define ecb_deprecated_message(msg) ecb_deprecated
		872	#endif
		873
		874	#if _MSC_VER >= 1400
		875	#define ecb_noinline __declspec (noinline)
		876	#else
		877	#define ecb_noinline ecb_attribute ((__noinline__))
		878	#endif
		879
		880	#define ecb_unused ecb_attribute ((__unused__))
		881	#define ecb_const ecb_attribute ((__const__))
		882	#define ecb_pure ecb_attribute ((__pure__))
		883
		884	#if ECB_C11 || __IBMC_NORETURN
		885	/* http://www-01.ibm.com/support/knowledgecenter/SSGH3R_13.1.0/com.ibm.xlcpp131.aix.doc/language_ref/noreturn.html */
		886	#define ecb_noreturn _Noreturn
		887	#elif ECB_CPP11
		888	#define ecb_noreturn [[noreturn]]
		889	#elif _MSC_VER >= 1200
		890	/* http://msdn.microsoft.com/en-us/library/k6ktzx3s.aspx */
		891	#define ecb_noreturn __declspec (noreturn)
		892	#else
		893	#define ecb_noreturn ecb_attribute ((__noreturn__))
		894	#endif
		895
		896	#if ECB_GCC_VERSION(4,3)
		897	#define ecb_artificial ecb_attribute ((__artificial__))
		898	#define ecb_hot ecb_attribute ((__hot__))
		899	#define ecb_cold ecb_attribute ((__cold__))
		900	#else
		901	#define ecb_artificial
		902	#define ecb_hot
		903	#define ecb_cold
		904	#endif
		905
		906	/* put around conditional expressions if you are very sure that the */
		907	/* expression is mostly true or mostly false. note that these return */
		908	/* booleans, not the expression. */
480	#define expect_false(expr) expect ((expr) != 0, 0)	909	#define ecb_expect_false(expr) ecb_expect (!!(expr), 0)
481	#define expect_true(expr) expect ((expr) != 0, 1)	910	#define ecb_expect_true(expr) ecb_expect (!!(expr), 1)
		911	/* for compatibility to the rest of the world */
		912	#define ecb_likely(expr) ecb_expect_true (expr)
		913	#define ecb_unlikely(expr) ecb_expect_false (expr)
		914
		915	/* count trailing zero bits and count # of one bits */
		916	#if ECB_GCC_VERSION(3,4) \
		917	|| (ECB_CLANG_BUILTIN(__builtin_clz) && ECB_CLANG_BUILTIN(__builtin_clzll) \
		918	&& ECB_CLANG_BUILTIN(__builtin_ctz) && ECB_CLANG_BUILTIN(__builtin_ctzll) \
		919	&& ECB_CLANG_BUILTIN(__builtin_popcount))
		920	/* we assume int == 32 bit, long == 32 or 64 bit and long long == 64 bit */
		921	#define ecb_ld32(x) (__builtin_clz (x) ^ 31)
		922	#define ecb_ld64(x) (__builtin_clzll (x) ^ 63)
		923	#define ecb_ctz32(x) __builtin_ctz (x)
		924	#define ecb_ctz64(x) __builtin_ctzll (x)
		925	#define ecb_popcount32(x) __builtin_popcount (x)
		926	/* no popcountll */
		927	#else
		928	ecb_function_ ecb_const int ecb_ctz32 (uint32_t x);
		929	ecb_function_ ecb_const int
		930	ecb_ctz32 (uint32_t x)
		931	{
		932	#if 1400 <= _MSC_VER && (_M_IX86 || _M_X64 || _M_IA64 || _M_ARM)
		933	unsigned long r;
		934	_BitScanForward (&r, x);
		935	return (int)r;
		936	#else
		937	int r = 0;
		938
		939	x &= ~x + 1; /* this isolates the lowest bit */
		940
		941	#if ECB_branchless_on_i386
		942	r += !!(x & 0xaaaaaaaa) << 0;
		943	r += !!(x & 0xcccccccc) << 1;
		944	r += !!(x & 0xf0f0f0f0) << 2;
		945	r += !!(x & 0xff00ff00) << 3;
		946	r += !!(x & 0xffff0000) << 4;
		947	#else
		948	if (x & 0xaaaaaaaa) r += 1;
		949	if (x & 0xcccccccc) r += 2;
		950	if (x & 0xf0f0f0f0) r += 4;
		951	if (x & 0xff00ff00) r += 8;
		952	if (x & 0xffff0000) r += 16;
		953	#endif
		954
		955	return r;
		956	#endif
		957	}
		958
		959	ecb_function_ ecb_const int ecb_ctz64 (uint64_t x);
		960	ecb_function_ ecb_const int
		961	ecb_ctz64 (uint64_t x)
		962	{
		963	#if 1400 <= _MSC_VER && (_M_X64 || _M_IA64 || _M_ARM)
		964	unsigned long r;
		965	_BitScanForward64 (&r, x);
		966	return (int)r;
		967	#else
		968	int shift = x & 0xffffffff ? 0 : 32;
		969	return ecb_ctz32 (x >> shift) + shift;
		970	#endif
		971	}
		972
		973	ecb_function_ ecb_const int ecb_popcount32 (uint32_t x);
		974	ecb_function_ ecb_const int
		975	ecb_popcount32 (uint32_t x)
		976	{
		977	x -= (x >> 1) & 0x55555555;
		978	x = ((x >> 2) & 0x33333333) + (x & 0x33333333);
		979	x = ((x >> 4) + x) & 0x0f0f0f0f;
		980	x *= 0x01010101;
		981
		982	return x >> 24;
		983	}
		984
		985	ecb_function_ ecb_const int ecb_ld32 (uint32_t x);
		986	ecb_function_ ecb_const int ecb_ld32 (uint32_t x)
		987	{
		988	#if 1400 <= _MSC_VER && (_M_IX86 || _M_X64 || _M_IA64 || _M_ARM)
		989	unsigned long r;
		990	_BitScanReverse (&r, x);
		991	return (int)r;
		992	#else
		993	int r = 0;
		994
		995	if (x >> 16) { x >>= 16; r += 16; }
		996	if (x >> 8) { x >>= 8; r += 8; }
		997	if (x >> 4) { x >>= 4; r += 4; }
		998	if (x >> 2) { x >>= 2; r += 2; }
		999	if (x >> 1) { r += 1; }
		1000
		1001	return r;
		1002	#endif
		1003	}
		1004
		1005	ecb_function_ ecb_const int ecb_ld64 (uint64_t x);
		1006	ecb_function_ ecb_const int ecb_ld64 (uint64_t x)
		1007	{
		1008	#if 1400 <= _MSC_VER && (_M_X64 || _M_IA64 || _M_ARM)
		1009	unsigned long r;
		1010	_BitScanReverse64 (&r, x);
		1011	return (int)r;
		1012	#else
		1013	int r = 0;
		1014
		1015	if (x >> 32) { x >>= 32; r += 32; }
		1016
		1017	return r + ecb_ld32 (x);
		1018	#endif
		1019	}
		1020	#endif
		1021
		1022	ecb_function_ ecb_const ecb_bool ecb_is_pot32 (uint32_t x);
		1023	ecb_function_ ecb_const ecb_bool ecb_is_pot32 (uint32_t x) { return !(x & (x - 1)); }
		1024	ecb_function_ ecb_const ecb_bool ecb_is_pot64 (uint64_t x);
		1025	ecb_function_ ecb_const ecb_bool ecb_is_pot64 (uint64_t x) { return !(x & (x - 1)); }
		1026
		1027	ecb_function_ ecb_const uint8_t ecb_bitrev8 (uint8_t x);
		1028	ecb_function_ ecb_const uint8_t ecb_bitrev8 (uint8_t x)
		1029	{
		1030	return ( (x * 0x0802U & 0x22110U)
		1031	| (x * 0x8020U & 0x88440U)) * 0x10101U >> 16;
		1032	}
		1033
		1034	ecb_function_ ecb_const uint16_t ecb_bitrev16 (uint16_t x);
		1035	ecb_function_ ecb_const uint16_t ecb_bitrev16 (uint16_t x)
		1036	{
		1037	x = ((x >> 1) & 0x5555) | ((x & 0x5555) << 1);
		1038	x = ((x >> 2) & 0x3333) | ((x & 0x3333) << 2);
		1039	x = ((x >> 4) & 0x0f0f) | ((x & 0x0f0f) << 4);
		1040	x = ( x >> 8 ) | ( x << 8);
		1041
		1042	return x;
		1043	}
		1044
		1045	ecb_function_ ecb_const uint32_t ecb_bitrev32 (uint32_t x);
		1046	ecb_function_ ecb_const uint32_t ecb_bitrev32 (uint32_t x)
		1047	{
		1048	x = ((x >> 1) & 0x55555555) | ((x & 0x55555555) << 1);
		1049	x = ((x >> 2) & 0x33333333) | ((x & 0x33333333) << 2);
		1050	x = ((x >> 4) & 0x0f0f0f0f) | ((x & 0x0f0f0f0f) << 4);
		1051	x = ((x >> 8) & 0x00ff00ff) | ((x & 0x00ff00ff) << 8);
		1052	x = ( x >> 16 ) | ( x << 16);
		1053
		1054	return x;
		1055	}
		1056
		1057	/* popcount64 is only available on 64 bit cpus as gcc builtin */
		1058	/* so for this version we are lazy */
		1059	ecb_function_ ecb_const int ecb_popcount64 (uint64_t x);
		1060	ecb_function_ ecb_const int
		1061	ecb_popcount64 (uint64_t x)
		1062	{
		1063	return ecb_popcount32 (x) + ecb_popcount32 (x >> 32);
		1064	}
		1065
		1066	ecb_inline ecb_const uint8_t ecb_rotl8 (uint8_t x, unsigned int count);
		1067	ecb_inline ecb_const uint8_t ecb_rotr8 (uint8_t x, unsigned int count);
		1068	ecb_inline ecb_const uint16_t ecb_rotl16 (uint16_t x, unsigned int count);
		1069	ecb_inline ecb_const uint16_t ecb_rotr16 (uint16_t x, unsigned int count);
		1070	ecb_inline ecb_const uint32_t ecb_rotl32 (uint32_t x, unsigned int count);
		1071	ecb_inline ecb_const uint32_t ecb_rotr32 (uint32_t x, unsigned int count);
		1072	ecb_inline ecb_const uint64_t ecb_rotl64 (uint64_t x, unsigned int count);
		1073	ecb_inline ecb_const uint64_t ecb_rotr64 (uint64_t x, unsigned int count);
		1074
		1075	ecb_inline ecb_const uint8_t ecb_rotl8 (uint8_t x, unsigned int count) { return (x >> ( 8 - count)) | (x << count); }
		1076	ecb_inline ecb_const uint8_t ecb_rotr8 (uint8_t x, unsigned int count) { return (x << ( 8 - count)) | (x >> count); }
		1077	ecb_inline ecb_const uint16_t ecb_rotl16 (uint16_t x, unsigned int count) { return (x >> (16 - count)) | (x << count); }
		1078	ecb_inline ecb_const uint16_t ecb_rotr16 (uint16_t x, unsigned int count) { return (x << (16 - count)) | (x >> count); }
		1079	ecb_inline ecb_const uint32_t ecb_rotl32 (uint32_t x, unsigned int count) { return (x >> (32 - count)) | (x << count); }
		1080	ecb_inline ecb_const uint32_t ecb_rotr32 (uint32_t x, unsigned int count) { return (x << (32 - count)) | (x >> count); }
		1081	ecb_inline ecb_const uint64_t ecb_rotl64 (uint64_t x, unsigned int count) { return (x >> (64 - count)) | (x << count); }
		1082	ecb_inline ecb_const uint64_t ecb_rotr64 (uint64_t x, unsigned int count) { return (x << (64 - count)) | (x >> count); }
		1083
		1084	#if ECB_GCC_VERSION(4,3) || (ECB_CLANG_BUILTIN(__builtin_bswap32) && ECB_CLANG_BUILTIN(__builtin_bswap64))
		1085	#if ECB_GCC_VERSION(4,8) || ECB_CLANG_BUILTIN(__builtin_bswap16)
		1086	#define ecb_bswap16(x) __builtin_bswap16 (x)
		1087	#else
		1088	#define ecb_bswap16(x) (__builtin_bswap32 (x) >> 16)
		1089	#endif
		1090	#define ecb_bswap32(x) __builtin_bswap32 (x)
		1091	#define ecb_bswap64(x) __builtin_bswap64 (x)
		1092	#elif _MSC_VER
		1093	#include <stdlib.h>
		1094	#define ecb_bswap16(x) ((uint16_t)_byteswap_ushort ((uint16_t)(x)))
		1095	#define ecb_bswap32(x) ((uint32_t)_byteswap_ulong ((uint32_t)(x)))
		1096	#define ecb_bswap64(x) ((uint64_t)_byteswap_uint64 ((uint64_t)(x)))
		1097	#else
		1098	ecb_function_ ecb_const uint16_t ecb_bswap16 (uint16_t x);
		1099	ecb_function_ ecb_const uint16_t
		1100	ecb_bswap16 (uint16_t x)
		1101	{
		1102	return ecb_rotl16 (x, 8);
		1103	}
		1104
		1105	ecb_function_ ecb_const uint32_t ecb_bswap32 (uint32_t x);
		1106	ecb_function_ ecb_const uint32_t
		1107	ecb_bswap32 (uint32_t x)
		1108	{
		1109	return (((uint32_t)ecb_bswap16 (x)) << 16) | ecb_bswap16 (x >> 16);
		1110	}
		1111
		1112	ecb_function_ ecb_const uint64_t ecb_bswap64 (uint64_t x);
		1113	ecb_function_ ecb_const uint64_t
		1114	ecb_bswap64 (uint64_t x)
		1115	{
		1116	return (((uint64_t)ecb_bswap32 (x)) << 32) | ecb_bswap32 (x >> 32);
		1117	}
		1118	#endif
		1119
		1120	#if ECB_GCC_VERSION(4,5) || ECB_CLANG_BUILTIN(__builtin_unreachable)
		1121	#define ecb_unreachable() __builtin_unreachable ()
		1122	#else
		1123	/* this seems to work fine, but gcc always emits a warning for it :/ */
		1124	ecb_inline ecb_noreturn void ecb_unreachable (void);
		1125	ecb_inline ecb_noreturn void ecb_unreachable (void) { }
		1126	#endif
		1127
		1128	/* try to tell the compiler that some condition is definitely true */
		1129	#define ecb_assume(cond) if (!(cond)) ecb_unreachable (); else 0
		1130
		1131	ecb_inline ecb_const uint32_t ecb_byteorder_helper (void);
		1132	ecb_inline ecb_const uint32_t
		1133	ecb_byteorder_helper (void)
		1134	{
		1135	/* the union code still generates code under pressure in gcc, */
		1136	/* but less than using pointers, and always seems to */
		1137	/* successfully return a constant. */
		1138	/* the reason why we have this horrible preprocessor mess */
		1139	/* is to avoid it in all cases, at least on common architectures */
		1140	/* or when using a recent enough gcc version (>= 4.6) */
		1141	#if (defined __BYTE_ORDER__ && __BYTE_ORDER__ == __ORDER_LITTLE_ENDIAN__) \
		1142	|| ((__i386 || __i386__ || _M_IX86 || ECB_GCC_AMD64 || ECB_MSVC_AMD64) && !__VOS__)
		1143	#define ECB_LITTLE_ENDIAN 1
		1144	return 0x44332211;
		1145	#elif (defined __BYTE_ORDER__ && __BYTE_ORDER__ == __ORDER_BIG_ENDIAN__) \
		1146	|| ((__AARCH64EB__ || __MIPSEB__ || __ARMEB__) && !__VOS__)
		1147	#define ECB_BIG_ENDIAN 1
		1148	return 0x11223344;
		1149	#else
		1150	union
		1151	{
		1152	uint8_t c[4];
		1153	uint32_t u;
		1154	} u = { 0x11, 0x22, 0x33, 0x44 };
		1155	return u.u;
		1156	#endif
		1157	}
		1158
		1159	ecb_inline ecb_const ecb_bool ecb_big_endian (void);
		1160	ecb_inline ecb_const ecb_bool ecb_big_endian (void) { return ecb_byteorder_helper () == 0x11223344; }
		1161	ecb_inline ecb_const ecb_bool ecb_little_endian (void);
		1162	ecb_inline ecb_const ecb_bool ecb_little_endian (void) { return ecb_byteorder_helper () == 0x44332211; }
		1163
		1164	#if ECB_GCC_VERSION(3,0) || ECB_C99
		1165	#define ecb_mod(m,n) ((m) % (n) + ((m) % (n) < 0 ? (n) : 0))
		1166	#else
		1167	#define ecb_mod(m,n) ((m) < 0 ? ((n) - 1 - ((-1 - (m)) % (n))) : ((m) % (n)))
		1168	#endif
		1169
		1170	#if ECB_CPP
		1171	template<typename T>
		1172	static inline T ecb_div_rd (T val, T div)
		1173	{
		1174	return val < 0 ? - ((-val + div - 1) / div) : (val ) / div;
		1175	}
		1176	template<typename T>
		1177	static inline T ecb_div_ru (T val, T div)
		1178	{
		1179	return val < 0 ? - ((-val ) / div) : (val + div - 1) / div;
		1180	}
		1181	#else
		1182	#define ecb_div_rd(val,div) ((val) < 0 ? - ((-(val) + (div) - 1) / (div)) : ((val) ) / (div))
		1183	#define ecb_div_ru(val,div) ((val) < 0 ? - ((-(val) ) / (div)) : ((val) + (div) - 1) / (div))
		1184	#endif
		1185
		1186	#if ecb_cplusplus_does_not_suck
		1187	/* does not work for local types (http://www.open-std.org/jtc1/sc22/wg21/docs/papers/2008/n2657.htm) */
		1188	template<typename T, int N>
		1189	static inline int ecb_array_length (const T (&arr)[N])
		1190	{
		1191	return N;
		1192	}
		1193	#else
		1194	#define ecb_array_length(name) (sizeof (name) / sizeof (name [0]))
		1195	#endif
		1196
		1197	ecb_function_ ecb_const uint32_t ecb_binary16_to_binary32 (uint32_t x);
		1198	ecb_function_ ecb_const uint32_t
		1199	ecb_binary16_to_binary32 (uint32_t x)
		1200	{
		1201	unsigned int s = (x & 0x8000) << (31 - 15);
		1202	int e = (x >> 10) & 0x001f;
		1203	unsigned int m = x & 0x03ff;
		1204
		1205	if (ecb_expect_false (e == 31))
		1206	/* infinity or NaN */
		1207	e = 255 - (127 - 15);
		1208	else if (ecb_expect_false (!e))
		1209	{
		1210	if (ecb_expect_true (!m))
		1211	/* zero, handled by code below by forcing e to 0 */
		1212	e = 0 - (127 - 15);
		1213	else
		1214	{
		1215	/* subnormal, renormalise */
		1216	unsigned int s = 10 - ecb_ld32 (m);
		1217
		1218	m = (m << s) & 0x3ff; /* mask implicit bit */
		1219	e -= s - 1;
		1220	}
		1221	}
		1222
		1223	/* e and m now are normalised, or zero, (or inf or nan) */
		1224	e += 127 - 15;
		1225
		1226	return s | (e << 23) | (m << (23 - 10));
		1227	}
		1228
		1229	ecb_function_ ecb_const uint16_t ecb_binary32_to_binary16 (uint32_t x);
		1230	ecb_function_ ecb_const uint16_t
		1231	ecb_binary32_to_binary16 (uint32_t x)
		1232	{
		1233	unsigned int s = (x >> 16) & 0x00008000; /* sign bit, the easy part */
		1234	unsigned int e = ((x >> 23) & 0x000000ff) - (127 - 15); /* the desired exponent */
		1235	unsigned int m = x & 0x007fffff;
		1236
		1237	x &= 0x7fffffff;
		1238
		1239	/* if it's within range of binary16 normals, use fast path */
		1240	if (ecb_expect_true (0x38800000 <= x && x <= 0x477fefff))
		1241	{
		1242	/* mantissa round-to-even */
		1243	m += 0x00000fff + ((m >> (23 - 10)) & 1);
		1244
		1245	/* handle overflow */
		1246	if (ecb_expect_false (m >= 0x00800000))
		1247	{
		1248	m >>= 1;
		1249	e += 1;
		1250	}
		1251
		1252	return s | (e << 10) | (m >> (23 - 10));
		1253	}
		1254
		1255	/* handle large numbers and infinity */
		1256	if (ecb_expect_true (0x477fefff < x && x <= 0x7f800000))
		1257	return s | 0x7c00;
		1258
		1259	/* handle zero, subnormals and small numbers */
		1260	if (ecb_expect_true (x < 0x38800000))
		1261	{
		1262	/* zero */
		1263	if (ecb_expect_true (!x))
		1264	return s;
		1265
		1266	/* handle subnormals */
		1267
		1268	/* too small, will be zero */
		1269	if (e < (14 - 24)) /* might not be sharp, but is good enough */
		1270	return s;
		1271
		1272	m |= 0x00800000; /* make implicit bit explicit */
		1273
		1274	/* very tricky - we need to round to the nearest e (+10) bit value */
		1275	{
		1276	unsigned int bits = 14 - e;
		1277	unsigned int half = (1 << (bits - 1)) - 1;
		1278	unsigned int even = (m >> bits) & 1;
		1279
		1280	/* if this overflows, we will end up with a normalised number */
		1281	m = (m + half + even) >> bits;
		1282	}
		1283
		1284	return s | m;
		1285	}
		1286
		1287	/* handle NaNs, preserve leftmost nan bits, but make sure we don't turn them into infinities */
		1288	m >>= 13;
		1289
		1290	return s | 0x7c00 | m | !m;
		1291	}
		1292
		1293	/*******************************************************************************/
		1294	/* floating point stuff, can be disabled by defining ECB_NO_LIBM */
		1295
		1296	/* basically, everything uses "ieee pure-endian" floating point numbers */
		1297	/* the only noteworthy exception is ancient armle, which uses order 43218765 */
		1298	#if 0 \
		1299	|| __i386 || __i386__ \
		1300	|| ECB_GCC_AMD64 \
		1301	|| __powerpc__ || __ppc__ || __powerpc64__ || __ppc64__ \
		1302	|| defined __s390__ || defined __s390x__ \
		1303	|| defined __mips__ \
		1304	|| defined __alpha__ \
		1305	|| defined __hppa__ \
		1306	|| defined __ia64__ \
		1307	|| defined __m68k__ \
		1308	|| defined __m88k__ \
		1309	|| defined __sh__ \
		1310	|| defined _M_IX86 || defined ECB_MSVC_AMD64 || defined _M_IA64 \
		1311	|| (defined __arm__ && (defined __ARM_EABI__ || defined __EABI__ || defined __VFP_FP__ || defined _WIN32_WCE || defined __ANDROID__)) \
		1312	|| defined __aarch64__
		1313	#define ECB_STDFP 1
		1314	#include <string.h> /* for memcpy */
		1315	#else
		1316	#define ECB_STDFP 0
		1317	#endif
		1318
		1319	#ifndef ECB_NO_LIBM
		1320
		1321	#include <math.h> /* for frexp*, ldexp*, INFINITY, NAN */
		1322
		1323	/* only the oldest of old doesn't have this one. solaris. */
		1324	#ifdef INFINITY
		1325	#define ECB_INFINITY INFINITY
		1326	#else
		1327	#define ECB_INFINITY HUGE_VAL
		1328	#endif
		1329
		1330	#ifdef NAN
		1331	#define ECB_NAN NAN
		1332	#else
		1333	#define ECB_NAN ECB_INFINITY
		1334	#endif
		1335
		1336	#if ECB_C99 || _XOPEN_VERSION >= 600 || _POSIX_VERSION >= 200112L
		1337	#define ecb_ldexpf(x,e) ldexpf ((x), (e))
		1338	#define ecb_frexpf(x,e) frexpf ((x), (e))
		1339	#else
		1340	#define ecb_ldexpf(x,e) (float) ldexp ((double) (x), (e))
		1341	#define ecb_frexpf(x,e) (float) frexp ((double) (x), (e))
		1342	#endif
		1343
		1344	/* convert a float to ieee single/binary32 */
		1345	ecb_function_ ecb_const uint32_t ecb_float_to_binary32 (float x);
		1346	ecb_function_ ecb_const uint32_t
		1347	ecb_float_to_binary32 (float x)
		1348	{
		1349	uint32_t r;
		1350
		1351	#if ECB_STDFP
		1352	memcpy (&r, &x, 4);
		1353	#else
		1354	/* slow emulation, works for anything but -0 */
		1355	uint32_t m;
		1356	int e;
		1357
		1358	if (x == 0e0f ) return 0x00000000U;
		1359	if (x > +3.40282346638528860e+38f) return 0x7f800000U;
		1360	if (x < -3.40282346638528860e+38f) return 0xff800000U;
		1361	if (x != x ) return 0x7fbfffffU;
		1362
		1363	m = ecb_frexpf (x, &e) * 0x1000000U;
		1364
		1365	r = m & 0x80000000U;
		1366
		1367	if (r)
		1368	m = -m;
		1369
		1370	if (e <= -126)
		1371	{
		1372	m &= 0xffffffU;
		1373	m >>= (-125 - e);
		1374	e = -126;
		1375	}
		1376
		1377	r |= (e + 126) << 23;
		1378	r |= m & 0x7fffffU;
		1379	#endif
		1380
		1381	return r;
		1382	}
		1383
		1384	/* converts an ieee single/binary32 to a float */
		1385	ecb_function_ ecb_const float ecb_binary32_to_float (uint32_t x);
		1386	ecb_function_ ecb_const float
		1387	ecb_binary32_to_float (uint32_t x)
		1388	{
		1389	float r;
		1390
		1391	#if ECB_STDFP
		1392	memcpy (&r, &x, 4);
		1393	#else
		1394	/* emulation, only works for normals and subnormals and +0 */
		1395	int neg = x >> 31;
		1396	int e = (x >> 23) & 0xffU;
		1397
		1398	x &= 0x7fffffU;
		1399
		1400	if (e)
		1401	x |= 0x800000U;
		1402	else
		1403	e = 1;
		1404
		1405	/* we distrust ldexpf a bit and do the 2**-24 scaling by an extra multiply */
		1406	r = ecb_ldexpf (x * (0.5f / 0x800000U), e - 126);
		1407
		1408	r = neg ? -r : r;
		1409	#endif
		1410
		1411	return r;
		1412	}
		1413
		1414	/* convert a double to ieee double/binary64 */
		1415	ecb_function_ ecb_const uint64_t ecb_double_to_binary64 (double x);
		1416	ecb_function_ ecb_const uint64_t
		1417	ecb_double_to_binary64 (double x)
		1418	{
		1419	uint64_t r;
		1420
		1421	#if ECB_STDFP
		1422	memcpy (&r, &x, 8);
		1423	#else
		1424	/* slow emulation, works for anything but -0 */
		1425	uint64_t m;
		1426	int e;
		1427
		1428	if (x == 0e0 ) return 0x0000000000000000U;
		1429	if (x > +1.79769313486231470e+308) return 0x7ff0000000000000U;
		1430	if (x < -1.79769313486231470e+308) return 0xfff0000000000000U;
		1431	if (x != x ) return 0X7ff7ffffffffffffU;
		1432
		1433	m = frexp (x, &e) * 0x20000000000000U;
		1434
		1435	r = m & 0x8000000000000000;;
		1436
		1437	if (r)
		1438	m = -m;
		1439
		1440	if (e <= -1022)
		1441	{
		1442	m &= 0x1fffffffffffffU;
		1443	m >>= (-1021 - e);
		1444	e = -1022;
		1445	}
		1446
		1447	r |= ((uint64_t)(e + 1022)) << 52;
		1448	r |= m & 0xfffffffffffffU;
		1449	#endif
		1450
		1451	return r;
		1452	}
		1453
		1454	/* converts an ieee double/binary64 to a double */
		1455	ecb_function_ ecb_const double ecb_binary64_to_double (uint64_t x);
		1456	ecb_function_ ecb_const double
		1457	ecb_binary64_to_double (uint64_t x)
		1458	{
		1459	double r;
		1460
		1461	#if ECB_STDFP
		1462	memcpy (&r, &x, 8);
		1463	#else
		1464	/* emulation, only works for normals and subnormals and +0 */
		1465	int neg = x >> 63;
		1466	int e = (x >> 52) & 0x7ffU;
		1467
		1468	x &= 0xfffffffffffffU;
		1469
		1470	if (e)
		1471	x |= 0x10000000000000U;
		1472	else
		1473	e = 1;
		1474
		1475	/* we distrust ldexp a bit and do the 2**-53 scaling by an extra multiply */
		1476	r = ldexp (x * (0.5 / 0x10000000000000U), e - 1022);
		1477
		1478	r = neg ? -r : r;
		1479	#endif
		1480
		1481	return r;
		1482	}
		1483
		1484	/* convert a float to ieee half/binary16 */
		1485	ecb_function_ ecb_const uint16_t ecb_float_to_binary16 (float x);
		1486	ecb_function_ ecb_const uint16_t
		1487	ecb_float_to_binary16 (float x)
		1488	{
		1489	return ecb_binary32_to_binary16 (ecb_float_to_binary32 (x));
		1490	}
		1491
		1492	/* convert an ieee half/binary16 to float */
		1493	ecb_function_ ecb_const float ecb_binary16_to_float (uint16_t x);
		1494	ecb_function_ ecb_const float
		1495	ecb_binary16_to_float (uint16_t x)
		1496	{
		1497	return ecb_binary32_to_float (ecb_binary16_to_binary32 (x));
		1498	}
		1499
		1500	#endif
		1501
		1502	#endif
		1503
		1504	/* ECB.H END */
		1505
		1506	#if ECB_MEMORY_FENCE_NEEDS_PTHREADS
		1507	/* if your architecture doesn't need memory fences, e.g. because it is
		1508	* single-cpu/core, or if you use libev in a project that doesn't use libev
		1509	* from multiple threads, then you can define ECB_AVOID_PTHREADS when compiling
		1510	* libev, in which cases the memory fences become nops.
		1511	* alternatively, you can remove this #error and link against libpthread,
		1512	* which will then provide the memory fences.
		1513	*/
		1514	# error "memory fences not defined for your architecture, please report"
		1515	#endif
		1516
		1517	#ifndef ECB_MEMORY_FENCE
		1518	# define ECB_MEMORY_FENCE do { } while (0)
		1519	# define ECB_MEMORY_FENCE_ACQUIRE ECB_MEMORY_FENCE
		1520	# define ECB_MEMORY_FENCE_RELEASE ECB_MEMORY_FENCE
		1521	#endif
		1522
		1523	#define expect_false(cond) ecb_expect_false (cond)
		1524	#define expect_true(cond) ecb_expect_true (cond)
		1525	#define noinline ecb_noinline
		1526
482	#define inline_size static inline	1527	#define inline_size ecb_inline
483		1528
484	#if EV_FEATURE_CODE	1529	#if EV_FEATURE_CODE
485	# define inline_speed static inline	1530	# define inline_speed ecb_inline
486	#else	1531	#else
487	# define inline_speed static noinline	1532	# define inline_speed noinline static
488	#endif	1533	#endif
489		1534
490	#define NUMPRI (EV_MAXPRI - EV_MINPRI + 1)	1535	#define NUMPRI (EV_MAXPRI - EV_MINPRI + 1)
491		1536
492	#if EV_MINPRI == EV_MAXPRI	1537	#if EV_MINPRI == EV_MAXPRI
…		…
539	#else	1584	#else
540		1585
541	#include <float.h>	1586	#include <float.h>
542		1587
543	/* a floor() replacement function, should be independent of ev_tstamp type */	1588	/* a floor() replacement function, should be independent of ev_tstamp type */
		1589	noinline
544	static ev_tstamp noinline	1590	static ev_tstamp
545	ev_floor (ev_tstamp v)	1591	ev_floor (ev_tstamp v)
546	{	1592	{
547	/* the choice of shift factor is not terribly important */	1593	/* the choice of shift factor is not terribly important */
548	#if FLT_RADIX != 2 /* assume FLT_RADIX == 10 */	1594	#if FLT_RADIX != 2 /* assume FLT_RADIX == 10 */
549	const ev_tstamp shift = sizeof (unsigned long) >= 8 ? 10000000000000000000. : 1000000000.;	1595	const ev_tstamp shift = sizeof (unsigned long) >= 8 ? 10000000000000000000. : 1000000000.;
…		…
581		1627
582	#ifdef __linux	1628	#ifdef __linux
583	# include <sys/utsname.h>	1629	# include <sys/utsname.h>
584	#endif	1630	#endif
585		1631
		1632	noinline ecb_cold
586	static unsigned int noinline	1633	static unsigned int
587	ev_linux_version (void)	1634	ev_linux_version (void)
588	{	1635	{
589	#ifdef __linux	1636	#ifdef __linux
590	unsigned int v = 0;	1637	unsigned int v = 0;
591	struct utsname buf;	1638	struct utsname buf;
…		…
620	}	1667	}
621		1668
622	/*****************************************************************************/	1669	/*****************************************************************************/
623		1670
624	#if EV_AVOID_STDIO	1671	#if EV_AVOID_STDIO
625	static void noinline	1672	noinline ecb_cold
		1673	static void
626	ev_printerr (const char *msg)	1674	ev_printerr (const char *msg)
627	{	1675	{
628	write (STDERR_FILENO, msg, strlen (msg));	1676	write (STDERR_FILENO, msg, strlen (msg));
629	}	1677	}
630	#endif	1678	#endif
631		1679
632	static void (*syserr_cb)(const char *msg);	1680	static void (*syserr_cb)(const char *msg) EV_THROW;
633		1681
		1682	ecb_cold
634	void	1683	void
635	ev_set_syserr_cb (void (*cb)(const char *msg))	1684	ev_set_syserr_cb (void (*cb)(const char *msg) EV_THROW) EV_THROW
636	{	1685	{
637	syserr_cb = cb;	1686	syserr_cb = cb;
638	}	1687	}
639		1688
640	static void noinline	1689	noinline ecb_cold
		1690	static void
641	ev_syserr (const char *msg)	1691	ev_syserr (const char *msg)
642	{	1692	{
643	if (!msg)	1693	if (!msg)
644	msg = "(libev) system error";	1694	msg = "(libev) system error";
645		1695
…		…
658	abort ();	1708	abort ();
659	}	1709	}
660	}	1710	}
661		1711
662	static void *	1712	static void *
663	ev_realloc_emul (void *ptr, long size)	1713	ev_realloc_emul (void *ptr, long size) EV_THROW
664	{	1714	{
665	#if __GLIBC__
666	return realloc (ptr, size);
667	#else
668	/* some systems, notably openbsd and darwin, fail to properly	1715	/* some systems, notably openbsd and darwin, fail to properly
669	* implement realloc (x, 0) (as required by both ansi c-89 and	1716	* implement realloc (x, 0) (as required by both ansi c-89 and
670	* the single unix specification, so work around them here.	1717	* the single unix specification, so work around them here.
		1718	* recently, also (at least) fedora and debian started breaking it,
		1719	* despite documenting it otherwise.
671	*/	1720	*/
672		1721
673	if (size)	1722	if (size)
674	return realloc (ptr, size);	1723	return realloc (ptr, size);
675		1724
676	free (ptr);	1725	free (ptr);
677	return 0;	1726	return 0;
678	#endif
679	}	1727	}
680		1728
681	static void *(*alloc)(void *ptr, long size) = ev_realloc_emul;	1729	static void *(*alloc)(void *ptr, long size) EV_THROW = ev_realloc_emul;
682		1730
		1731	ecb_cold
683	void	1732	void
684	ev_set_allocator (void *(*cb)(void *ptr, long size))	1733	ev_set_allocator (void *(*cb)(void *ptr, long size) EV_THROW) EV_THROW
685	{	1734	{
686	alloc = cb;	1735	alloc = cb;
687	}	1736	}
688		1737
689	inline_speed void *	1738	inline_speed void *
…		…
777	#undef VAR	1826	#undef VAR
778	};	1827	};
779	#include "ev_wrap.h"	1828	#include "ev_wrap.h"
780		1829
781	static struct ev_loop default_loop_struct;	1830	static struct ev_loop default_loop_struct;
782	struct ev_loop *ev_default_loop_ptr;	1831	EV_API_DECL struct ev_loop *ev_default_loop_ptr = 0; /* needs to be initialised to make it a definition despite extern */
783		1832
784	#else	1833	#else
785		1834
786	ev_tstamp ev_rt_now;	1835	EV_API_DECL ev_tstamp ev_rt_now = 0; /* needs to be initialised to make it a definition despite extern */
787	#define VAR(name,decl) static decl;	1836	#define VAR(name,decl) static decl;
788	#include "ev_vars.h"	1837	#include "ev_vars.h"
789	#undef VAR	1838	#undef VAR
790		1839
791	static int ev_default_loop_ptr;	1840	static int ev_default_loop_ptr;
…		…
806		1855
807	/*****************************************************************************/	1856	/*****************************************************************************/
808		1857
809	#ifndef EV_HAVE_EV_TIME	1858	#ifndef EV_HAVE_EV_TIME
810	ev_tstamp	1859	ev_tstamp
811	ev_time (void)	1860	ev_time (void) EV_THROW
812	{	1861	{
813	#if EV_USE_REALTIME	1862	#if EV_USE_REALTIME
814	if (expect_true (have_realtime))	1863	if (expect_true (have_realtime))
815	{	1864	{
816	struct timespec ts;	1865	struct timespec ts;
…		…
840	return ev_time ();	1889	return ev_time ();
841	}	1890	}
842		1891
843	#if EV_MULTIPLICITY	1892	#if EV_MULTIPLICITY
844	ev_tstamp	1893	ev_tstamp
845	ev_now (EV_P)	1894	ev_now (EV_P) EV_THROW
846	{	1895	{
847	return ev_rt_now;	1896	return ev_rt_now;
848	}	1897	}
849	#endif	1898	#endif
850		1899
851	void	1900	void
852	ev_sleep (ev_tstamp delay)	1901	ev_sleep (ev_tstamp delay) EV_THROW
853	{	1902	{
854	if (delay > 0.)	1903	if (delay > 0.)
855	{	1904	{
856	#if EV_USE_NANOSLEEP	1905	#if EV_USE_NANOSLEEP
857	struct timespec ts;	1906	struct timespec ts;
858		1907
859	EV_TS_SET (ts, delay);	1908	EV_TS_SET (ts, delay);
860	nanosleep (&ts, 0);	1909	nanosleep (&ts, 0);
861	#elif defined(_WIN32)	1910	#elif defined _WIN32
862	Sleep ((unsigned long)(delay * 1e3));	1911	Sleep ((unsigned long)(delay * 1e3));
863	#else	1912	#else
864	struct timeval tv;	1913	struct timeval tv;
865		1914
866	/* here we rely on sys/time.h + sys/types.h + unistd.h providing select */	1915	/* here we rely on sys/time.h + sys/types.h + unistd.h providing select */
…		…
870	select (0, 0, 0, 0, &tv);	1919	select (0, 0, 0, 0, &tv);
871	#endif	1920	#endif
872	}	1921	}
873	}	1922	}
874		1923
875	inline_speed int
876	ev_timeout_to_ms (ev_tstamp timeout)
877	{
878	int ms = timeout * 1000. + .999999;
879
880	return expect_true (ms) ? ms : timeout < 1e-6 ? 0 : 1;
881	}
882
883	/*****************************************************************************/	1924	/*****************************************************************************/
884		1925
885	#define MALLOC_ROUND 4096 /* prefer to allocate in chunks of this size, must be 2**n and >> 4 longs */	1926	#define MALLOC_ROUND 4096 /* prefer to allocate in chunks of this size, must be 2**n and >> 4 longs */
886		1927
887	/* find a suitable new size for the given array, */	1928	/* find a suitable new size for the given array, */
…		…
893		1934
894	do	1935	do
895	ncur <<= 1;	1936	ncur <<= 1;
896	while (cnt > ncur);	1937	while (cnt > ncur);
897		1938
898	/* if size is large, round to MALLOC_ROUND - 4 * longs to accomodate malloc overhead */	1939	/* if size is large, round to MALLOC_ROUND - 4 * longs to accommodate malloc overhead */
899	if (elem * ncur > MALLOC_ROUND - sizeof (void *) * 4)	1940	if (elem * ncur > MALLOC_ROUND - sizeof (void *) * 4)
900	{	1941	{
901	ncur *= elem;	1942	ncur *= elem;
902	ncur = (ncur + elem + (MALLOC_ROUND - 1) + sizeof (void *) * 4) & ~(MALLOC_ROUND - 1);	1943	ncur = (ncur + elem + (MALLOC_ROUND - 1) + sizeof (void *) * 4) & ~(MALLOC_ROUND - 1);
903	ncur = ncur - sizeof (void *) * 4;	1944	ncur = ncur - sizeof (void *) * 4;
…		…
905	}	1946	}
906		1947
907	return ncur;	1948	return ncur;
908	}	1949	}
909		1950
910	static noinline void *	1951	noinline ecb_cold
		1952	static void *
911	array_realloc (int elem, void *base, int *cur, int cnt)	1953	array_realloc (int elem, void *base, int *cur, int cnt)
912	{	1954	{
913	*cur = array_nextsize (elem, *cur, cnt);	1955	*cur = array_nextsize (elem, *cur, cnt);
914	return ev_realloc (base, elem * *cur);	1956	return ev_realloc (base, elem * *cur);
915	}	1957	}
…		…
918	memset ((void *)(base), 0, sizeof (*(base)) * (count))	1960	memset ((void *)(base), 0, sizeof (*(base)) * (count))
919		1961
920	#define array_needsize(type,base,cur,cnt,init) \	1962	#define array_needsize(type,base,cur,cnt,init) \
921	if (expect_false ((cnt) > (cur))) \	1963	if (expect_false ((cnt) > (cur))) \
922	{ \	1964	{ \
923	int ocur_ = (cur); \	1965	ecb_unused int ocur_ = (cur); \
924	(base) = (type *)array_realloc \	1966	(base) = (type *)array_realloc \
925	(sizeof (type), (base), &(cur), (cnt)); \	1967	(sizeof (type), (base), &(cur), (cnt)); \
926	init ((base) + (ocur_), (cur) - ocur_); \	1968	init ((base) + (ocur_), (cur) - ocur_); \
927	}	1969	}
928		1970
…		…
940	ev_free (stem ## s idx); stem ## cnt idx = stem ## max idx = 0; stem ## s idx = 0	1982	ev_free (stem ## s idx); stem ## cnt idx = stem ## max idx = 0; stem ## s idx = 0
941		1983
942	/*****************************************************************************/	1984	/*****************************************************************************/
943		1985
944	/* dummy callback for pending events */	1986	/* dummy callback for pending events */
945	static void noinline	1987	noinline
		1988	static void
946	pendingcb (EV_P_ ev_prepare *w, int revents)	1989	pendingcb (EV_P_ ev_prepare *w, int revents)
947	{	1990	{
948	}	1991	}
949		1992
950	void noinline	1993	noinline
		1994	void
951	ev_feed_event (EV_P_ void *w, int revents)	1995	ev_feed_event (EV_P_ void *w, int revents) EV_THROW
952	{	1996	{
953	W w_ = (W)w;	1997	W w_ = (W)w;
954	int pri = ABSPRI (w_);	1998	int pri = ABSPRI (w_);
955		1999
956	if (expect_false (w_->pending))	2000	if (expect_false (w_->pending))
…		…
960	w_->pending = ++pendingcnt [pri];	2004	w_->pending = ++pendingcnt [pri];
961	array_needsize (ANPENDING, pendings [pri], pendingmax [pri], w_->pending, EMPTY2);	2005	array_needsize (ANPENDING, pendings [pri], pendingmax [pri], w_->pending, EMPTY2);
962	pendings [pri][w_->pending - 1].w = w_;	2006	pendings [pri][w_->pending - 1].w = w_;
963	pendings [pri][w_->pending - 1].events = revents;	2007	pendings [pri][w_->pending - 1].events = revents;
964	}	2008	}
		2009
		2010	pendingpri = NUMPRI - 1;
965	}	2011	}
966		2012
967	inline_speed void	2013	inline_speed void
968	feed_reverse (EV_P_ W w)	2014	feed_reverse (EV_P_ W w)
969	{	2015	{
…		…
1015	if (expect_true (!anfd->reify))	2061	if (expect_true (!anfd->reify))
1016	fd_event_nocheck (EV_A_ fd, revents);	2062	fd_event_nocheck (EV_A_ fd, revents);
1017	}	2063	}
1018		2064
1019	void	2065	void
1020	ev_feed_fd_event (EV_P_ int fd, int revents)	2066	ev_feed_fd_event (EV_P_ int fd, int revents) EV_THROW
1021	{	2067	{
1022	if (fd >= 0 && fd < anfdmax)	2068	if (fd >= 0 && fd < anfdmax)
1023	fd_event_nocheck (EV_A_ fd, revents);	2069	fd_event_nocheck (EV_A_ fd, revents);
1024	}	2070	}
1025		2071
…		…
1083		2129
1084	fdchangecnt = 0;	2130	fdchangecnt = 0;
1085	}	2131	}
1086		2132
1087	/* something about the given fd changed */	2133	/* something about the given fd changed */
1088	inline_size void	2134	inline_size
		2135	void
1089	fd_change (EV_P_ int fd, int flags)	2136	fd_change (EV_P_ int fd, int flags)
1090	{	2137	{
1091	unsigned char reify = anfds [fd].reify;	2138	unsigned char reify = anfds [fd].reify;
1092	anfds [fd].reify |= flags;	2139	anfds [fd].reify |= flags;
1093		2140
…		…
1098	fdchanges [fdchangecnt - 1] = fd;	2145	fdchanges [fdchangecnt - 1] = fd;
1099	}	2146	}
1100	}	2147	}
1101		2148
1102	/* the given fd is invalid/unusable, so make sure it doesn't hurt us anymore */	2149	/* the given fd is invalid/unusable, so make sure it doesn't hurt us anymore */
1103	inline_speed void	2150	inline_speed ecb_cold void
1104	fd_kill (EV_P_ int fd)	2151	fd_kill (EV_P_ int fd)
1105	{	2152	{
1106	ev_io *w;	2153	ev_io *w;
1107		2154
1108	while ((w = (ev_io *)anfds [fd].head))	2155	while ((w = (ev_io *)anfds [fd].head))
…		…
1111	ev_feed_event (EV_A_ (W)w, EV_ERROR | EV_READ | EV_WRITE);	2158	ev_feed_event (EV_A_ (W)w, EV_ERROR | EV_READ | EV_WRITE);
1112	}	2159	}
1113	}	2160	}
1114		2161
1115	/* check whether the given fd is actually valid, for error recovery */	2162	/* check whether the given fd is actually valid, for error recovery */
1116	inline_size int	2163	inline_size ecb_cold int
1117	fd_valid (int fd)	2164	fd_valid (int fd)
1118	{	2165	{
1119	#ifdef _WIN32	2166	#ifdef _WIN32
1120	return EV_FD_TO_WIN32_HANDLE (fd) != -1;	2167	return EV_FD_TO_WIN32_HANDLE (fd) != -1;
1121	#else	2168	#else
1122	return fcntl (fd, F_GETFD) != -1;	2169	return fcntl (fd, F_GETFD) != -1;
1123	#endif	2170	#endif
1124	}	2171	}
1125		2172
1126	/* called on EBADF to verify fds */	2173	/* called on EBADF to verify fds */
1127	static void noinline	2174	noinline ecb_cold
		2175	static void
1128	fd_ebadf (EV_P)	2176	fd_ebadf (EV_P)
1129	{	2177	{
1130	int fd;	2178	int fd;
1131		2179
1132	for (fd = 0; fd < anfdmax; ++fd)	2180	for (fd = 0; fd < anfdmax; ++fd)
…		…
1134	if (!fd_valid (fd) && errno == EBADF)	2182	if (!fd_valid (fd) && errno == EBADF)
1135	fd_kill (EV_A_ fd);	2183	fd_kill (EV_A_ fd);
1136	}	2184	}
1137		2185
1138	/* called on ENOMEM in select/poll to kill some fds and retry */	2186	/* called on ENOMEM in select/poll to kill some fds and retry */
1139	static void noinline	2187	noinline ecb_cold
		2188	static void
1140	fd_enomem (EV_P)	2189	fd_enomem (EV_P)
1141	{	2190	{
1142	int fd;	2191	int fd;
1143		2192
1144	for (fd = anfdmax; fd--; )	2193	for (fd = anfdmax; fd--; )
…		…
1148	break;	2197	break;
1149	}	2198	}
1150	}	2199	}
1151		2200
1152	/* usually called after fork if backend needs to re-arm all fds from scratch */	2201	/* usually called after fork if backend needs to re-arm all fds from scratch */
1153	static void noinline	2202	noinline
		2203	static void
1154	fd_rearm_all (EV_P)	2204	fd_rearm_all (EV_P)
1155	{	2205	{
1156	int fd;	2206	int fd;
1157		2207
1158	for (fd = 0; fd < anfdmax; ++fd)	2208	for (fd = 0; fd < anfdmax; ++fd)
…		…
1339		2389
1340	/*****************************************************************************/	2390	/*****************************************************************************/
1341		2391
1342	#if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE	2392	#if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE
1343		2393
1344	static void noinline	2394	noinline ecb_cold
		2395	static void
1345	evpipe_init (EV_P)	2396	evpipe_init (EV_P)
1346	{	2397	{
1347	if (!ev_is_active (&pipe_w))	2398	if (!ev_is_active (&pipe_w))
1348	{	2399	{
		2400	int fds [2];
		2401
1349	# if EV_USE_EVENTFD	2402	# if EV_USE_EVENTFD
		2403	fds [0] = -1;
1350	evfd = eventfd (0, EFD_NONBLOCK | EFD_CLOEXEC);	2404	fds [1] = eventfd (0, EFD_NONBLOCK | EFD_CLOEXEC);
1351	if (evfd < 0 && errno == EINVAL)	2405	if (fds [1] < 0 && errno == EINVAL)
1352	evfd = eventfd (0, 0);	2406	fds [1] = eventfd (0, 0);
1353		2407
1354	if (evfd >= 0)	2408	if (fds [1] < 0)
		2409	# endif
1355	{	2410	{
		2411	while (pipe (fds))
		2412	ev_syserr ("(libev) error creating signal/async pipe");
		2413
		2414	fd_intern (fds [0]);
		2415	}
		2416
1356	evpipe [0] = -1;	2417	evpipe [0] = fds [0];
1357	fd_intern (evfd); /* doing it twice doesn't hurt */	2418
1358	ev_io_set (&pipe_w, evfd, EV_READ);	2419	if (evpipe [1] < 0)
		2420	evpipe [1] = fds [1]; /* first call, set write fd */
		2421	else
		2422	{
		2423	/* on subsequent calls, do not change evpipe [1] */
		2424	/* so that evpipe_write can always rely on its value. */
		2425	/* this branch does not do anything sensible on windows, */
		2426	/* so must not be executed on windows */
		2427
		2428	dup2 (fds [1], evpipe [1]);
		2429	close (fds [1]);
		2430	}
		2431
		2432	fd_intern (evpipe [1]);
		2433
		2434	ev_io_set (&pipe_w, evpipe [0] < 0 ? evpipe [1] : evpipe [0], EV_READ);
		2435	ev_io_start (EV_A_ &pipe_w);
		2436	ev_unref (EV_A); /* watcher should not keep loop alive */
		2437	}
		2438	}
		2439
		2440	inline_speed void
		2441	evpipe_write (EV_P_ EV_ATOMIC_T *flag)
		2442	{
		2443	ECB_MEMORY_FENCE; /* push out the write before this function was called, acquire flag */
		2444
		2445	if (expect_true (*flag))
		2446	return;
		2447
		2448	*flag = 1;
		2449	ECB_MEMORY_FENCE_RELEASE; /* make sure flag is visible before the wakeup */
		2450
		2451	pipe_write_skipped = 1;
		2452
		2453	ECB_MEMORY_FENCE; /* make sure pipe_write_skipped is visible before we check pipe_write_wanted */
		2454
		2455	if (pipe_write_wanted)
		2456	{
		2457	int old_errno;
		2458
		2459	pipe_write_skipped = 0;
		2460	ECB_MEMORY_FENCE_RELEASE;
		2461
		2462	old_errno = errno; /* save errno because write will clobber it */
		2463
		2464	#if EV_USE_EVENTFD
		2465	if (evpipe [0] < 0)
		2466	{
		2467	uint64_t counter = 1;
		2468	write (evpipe [1], &counter, sizeof (uint64_t));
1359	}	2469	}
1360	else	2470	else
1361	# endif	2471	#endif
1362	{	2472	{
1363	while (pipe (evpipe))	2473	#ifdef _WIN32
1364	ev_syserr ("(libev) error creating signal/async pipe");	2474	WSABUF buf;
1365		2475	DWORD sent;
1366	fd_intern (evpipe [0]);	2476	buf.buf = &buf;
1367	fd_intern (evpipe [1]);	2477	buf.len = 1;
1368	ev_io_set (&pipe_w, evpipe [0], EV_READ);	2478	WSASend (EV_FD_TO_WIN32_HANDLE (evpipe [1]), &buf, 1, &sent, 0, 0, 0);
		2479	#else
		2480	write (evpipe [1], &(evpipe [1]), 1);
		2481	#endif
1369	}	2482	}
1370
1371	ev_io_start (EV_A_ &pipe_w);
1372	ev_unref (EV_A); /* watcher should not keep loop alive */
1373	}
1374	}
1375
1376	inline_size void
1377	evpipe_write (EV_P_ EV_ATOMIC_T *flag)
1378	{
1379	if (!*flag)
1380	{
1381	int old_errno = errno; /* save errno because write might clobber it */
1382	char dummy;
1383
1384	*flag = 1;
1385
1386	#if EV_USE_EVENTFD
1387	if (evfd >= 0)
1388	{
1389	uint64_t counter = 1;
1390	write (evfd, &counter, sizeof (uint64_t));
1391	}
1392	else
1393	#endif
1394	/* win32 people keep sending patches that change this write() to send() */
1395	/* and then run away. but send() is wrong, it wants a socket handle on win32 */
1396	/* so when you think this write should be a send instead, please find out */
1397	/* where your send() is from - it's definitely not the microsoft send, and */
1398	/* tell me. thank you. */
1399	write (evpipe [1], &dummy, 1);
1400		2483
1401	errno = old_errno;	2484	errno = old_errno;
1402	}	2485	}
1403	}	2486	}
1404		2487
…		…
1407	static void	2490	static void
1408	pipecb (EV_P_ ev_io *iow, int revents)	2491	pipecb (EV_P_ ev_io *iow, int revents)
1409	{	2492	{
1410	int i;	2493	int i;
1411		2494
		2495	if (revents & EV_READ)
		2496	{
1412	#if EV_USE_EVENTFD	2497	#if EV_USE_EVENTFD
1413	if (evfd >= 0)	2498	if (evpipe [0] < 0)
1414	{	2499	{
1415	uint64_t counter;	2500	uint64_t counter;
1416	read (evfd, &counter, sizeof (uint64_t));	2501	read (evpipe [1], &counter, sizeof (uint64_t));
1417	}	2502	}
1418	else	2503	else
1419	#endif	2504	#endif
1420	{	2505	{
1421	char dummy;	2506	char dummy[4];
1422	/* see discussion in evpipe_write when you think this read should be recv in win32 */	2507	#ifdef _WIN32
		2508	WSABUF buf;
		2509	DWORD recvd;
		2510	DWORD flags = 0;
		2511	buf.buf = dummy;
		2512	buf.len = sizeof (dummy);
		2513	WSARecv (EV_FD_TO_WIN32_HANDLE (evpipe [0]), &buf, 1, &recvd, &flags, 0, 0);
		2514	#else
1423	read (evpipe [0], &dummy, 1);	2515	read (evpipe [0], &dummy, sizeof (dummy));
		2516	#endif
		2517	}
1424	}	2518	}
		2519
		2520	pipe_write_skipped = 0;
		2521
		2522	ECB_MEMORY_FENCE; /* push out skipped, acquire flags */
1425		2523
1426	#if EV_SIGNAL_ENABLE	2524	#if EV_SIGNAL_ENABLE
1427	if (sig_pending)	2525	if (sig_pending)
1428	{	2526	{
1429	sig_pending = 0;	2527	sig_pending = 0;
		2528
		2529	ECB_MEMORY_FENCE;
1430		2530
1431	for (i = EV_NSIG - 1; i--; )	2531	for (i = EV_NSIG - 1; i--; )
1432	if (expect_false (signals [i].pending))	2532	if (expect_false (signals [i].pending))
1433	ev_feed_signal_event (EV_A_ i + 1);	2533	ev_feed_signal_event (EV_A_ i + 1);
1434	}	2534	}
…		…
1436		2536
1437	#if EV_ASYNC_ENABLE	2537	#if EV_ASYNC_ENABLE
1438	if (async_pending)	2538	if (async_pending)
1439	{	2539	{
1440	async_pending = 0;	2540	async_pending = 0;
		2541
		2542	ECB_MEMORY_FENCE;
1441		2543
1442	for (i = asynccnt; i--; )	2544	for (i = asynccnt; i--; )
1443	if (asyncs [i]->sent)	2545	if (asyncs [i]->sent)
1444	{	2546	{
1445	asyncs [i]->sent = 0;	2547	asyncs [i]->sent = 0;
		2548	ECB_MEMORY_FENCE_RELEASE;
1446	ev_feed_event (EV_A_ asyncs [i], EV_ASYNC);	2549	ev_feed_event (EV_A_ asyncs [i], EV_ASYNC);
1447	}	2550	}
1448	}	2551	}
1449	#endif	2552	#endif
1450	}	2553	}
1451		2554
1452	/*****************************************************************************/	2555	/*****************************************************************************/
1453		2556
1454	void	2557	void
1455	ev_feed_signal (int signum)	2558	ev_feed_signal (int signum) EV_THROW
1456	{	2559	{
1457	#if EV_MULTIPLICITY	2560	#if EV_MULTIPLICITY
		2561	EV_P;
		2562	ECB_MEMORY_FENCE_ACQUIRE;
1458	EV_P = signals [signum - 1].loop;	2563	EV_A = signals [signum - 1].loop;
1459		2564
1460	if (!EV_A)	2565	if (!EV_A)
1461	return;	2566	return;
1462	#endif	2567	#endif
1463		2568
…		…
1473	#endif	2578	#endif
1474		2579
1475	ev_feed_signal (signum);	2580	ev_feed_signal (signum);
1476	}	2581	}
1477		2582
1478	void noinline	2583	noinline
		2584	void
1479	ev_feed_signal_event (EV_P_ int signum)	2585	ev_feed_signal_event (EV_P_ int signum) EV_THROW
1480	{	2586	{
1481	WL w;	2587	WL w;
1482		2588
1483	if (expect_false (signum <= 0 || signum > EV_NSIG))	2589	if (expect_false (signum <= 0 || signum >= EV_NSIG))
1484	return;	2590	return;
1485		2591
1486	--signum;	2592	--signum;
1487		2593
1488	#if EV_MULTIPLICITY	2594	#if EV_MULTIPLICITY
…		…
1492	if (expect_false (signals [signum].loop != EV_A))	2598	if (expect_false (signals [signum].loop != EV_A))
1493	return;	2599	return;
1494	#endif	2600	#endif
1495		2601
1496	signals [signum].pending = 0;	2602	signals [signum].pending = 0;
		2603	ECB_MEMORY_FENCE_RELEASE;
1497		2604
1498	for (w = signals [signum].head; w; w = w->next)	2605	for (w = signals [signum].head; w; w = w->next)
1499	ev_feed_event (EV_A_ (W)w, EV_SIGNAL);	2606	ev_feed_event (EV_A_ (W)w, EV_SIGNAL);
1500	}	2607	}
1501		2608
…		…
1599	#endif	2706	#endif
1600	#if EV_USE_SELECT	2707	#if EV_USE_SELECT
1601	# include "ev_select.c"	2708	# include "ev_select.c"
1602	#endif	2709	#endif
1603		2710
1604	int	2711	ecb_cold int
1605	ev_version_major (void)	2712	ev_version_major (void) EV_THROW
1606	{	2713	{
1607	return EV_VERSION_MAJOR;	2714	return EV_VERSION_MAJOR;
1608	}	2715	}
1609		2716
1610	int	2717	ecb_cold int
1611	ev_version_minor (void)	2718	ev_version_minor (void) EV_THROW
1612	{	2719	{
1613	return EV_VERSION_MINOR;	2720	return EV_VERSION_MINOR;
1614	}	2721	}
1615		2722
1616	/* return true if we are running with elevated privileges and should ignore env variables */	2723	/* return true if we are running with elevated privileges and should ignore env variables */
1617	int inline_size	2724	inline_size ecb_cold int
1618	enable_secure (void)	2725	enable_secure (void)
1619	{	2726	{
1620	#ifdef _WIN32	2727	#ifdef _WIN32
1621	return 0;	2728	return 0;
1622	#else	2729	#else
1623	return getuid () != geteuid ()	2730	return getuid () != geteuid ()
1624	|| getgid () != getegid ();	2731	|| getgid () != getegid ();
1625	#endif	2732	#endif
1626	}	2733	}
1627		2734
		2735	ecb_cold
1628	unsigned int	2736	unsigned int
1629	ev_supported_backends (void)	2737	ev_supported_backends (void) EV_THROW
1630	{	2738	{
1631	unsigned int flags = 0;	2739	unsigned int flags = 0;
1632		2740
1633	if (EV_USE_PORT ) flags |= EVBACKEND_PORT;	2741	if (EV_USE_PORT ) flags |= EVBACKEND_PORT;
1634	if (EV_USE_KQUEUE) flags |= EVBACKEND_KQUEUE;	2742	if (EV_USE_KQUEUE) flags |= EVBACKEND_KQUEUE;
…		…
1637	if (EV_USE_SELECT) flags |= EVBACKEND_SELECT;	2745	if (EV_USE_SELECT) flags |= EVBACKEND_SELECT;
1638		2746
1639	return flags;	2747	return flags;
1640	}	2748	}
1641		2749
		2750	ecb_cold
1642	unsigned int	2751	unsigned int
1643	ev_recommended_backends (void)	2752	ev_recommended_backends (void) EV_THROW
1644	{	2753	{
1645	unsigned int flags = ev_supported_backends ();	2754	unsigned int flags = ev_supported_backends ();
1646		2755
1647	#ifndef __NetBSD__	2756	#ifndef __NetBSD__
1648	/* kqueue is borked on everything but netbsd apparently */	2757	/* kqueue is borked on everything but netbsd apparently */
…		…
1659	#endif	2768	#endif
1660		2769
1661	return flags;	2770	return flags;
1662	}	2771	}
1663		2772
		2773	ecb_cold
1664	unsigned int	2774	unsigned int
1665	ev_embeddable_backends (void)	2775	ev_embeddable_backends (void) EV_THROW
1666	{	2776	{
1667	int flags = EVBACKEND_EPOLL | EVBACKEND_KQUEUE | EVBACKEND_PORT;	2777	int flags = EVBACKEND_EPOLL | EVBACKEND_KQUEUE | EVBACKEND_PORT;
1668		2778
1669	/* epoll embeddability broken on all linux versions up to at least 2.6.23 */	2779	/* epoll embeddability broken on all linux versions up to at least 2.6.23 */
1670	if (ev_linux_version () < 0x020620) /* disable it on linux < 2.6.32 */	2780	if (ev_linux_version () < 0x020620) /* disable it on linux < 2.6.32 */
…		…
1672		2782
1673	return flags;	2783	return flags;
1674	}	2784	}
1675		2785
1676	unsigned int	2786	unsigned int
1677	ev_backend (EV_P)	2787	ev_backend (EV_P) EV_THROW
1678	{	2788	{
1679	return backend;	2789	return backend;
1680	}	2790	}
1681		2791
1682	#if EV_FEATURE_API	2792	#if EV_FEATURE_API
1683	unsigned int	2793	unsigned int
1684	ev_iteration (EV_P)	2794	ev_iteration (EV_P) EV_THROW
1685	{	2795	{
1686	return loop_count;	2796	return loop_count;
1687	}	2797	}
1688		2798
1689	unsigned int	2799	unsigned int
1690	ev_depth (EV_P)	2800	ev_depth (EV_P) EV_THROW
1691	{	2801	{
1692	return loop_depth;	2802	return loop_depth;
1693	}	2803	}
1694		2804
1695	void	2805	void
1696	ev_set_io_collect_interval (EV_P_ ev_tstamp interval)	2806	ev_set_io_collect_interval (EV_P_ ev_tstamp interval) EV_THROW
1697	{	2807	{
1698	io_blocktime = interval;	2808	io_blocktime = interval;
1699	}	2809	}
1700		2810
1701	void	2811	void
1702	ev_set_timeout_collect_interval (EV_P_ ev_tstamp interval)	2812	ev_set_timeout_collect_interval (EV_P_ ev_tstamp interval) EV_THROW
1703	{	2813	{
1704	timeout_blocktime = interval;	2814	timeout_blocktime = interval;
1705	}	2815	}
1706		2816
1707	void	2817	void
1708	ev_set_userdata (EV_P_ void *data)	2818	ev_set_userdata (EV_P_ void *data) EV_THROW
1709	{	2819	{
1710	userdata = data;	2820	userdata = data;
1711	}	2821	}
1712		2822
1713	void *	2823	void *
1714	ev_userdata (EV_P)	2824	ev_userdata (EV_P) EV_THROW
1715	{	2825	{
1716	return userdata;	2826	return userdata;
1717	}	2827	}
1718		2828
		2829	void
1719	void ev_set_invoke_pending_cb (EV_P_ void (*invoke_pending_cb)(EV_P))	2830	ev_set_invoke_pending_cb (EV_P_ ev_loop_callback invoke_pending_cb) EV_THROW
1720	{	2831	{
1721	invoke_cb = invoke_pending_cb;	2832	invoke_cb = invoke_pending_cb;
1722	}	2833	}
1723		2834
		2835	void
1724	void ev_set_loop_release_cb (EV_P_ void (*release)(EV_P), void (*acquire)(EV_P))	2836	ev_set_loop_release_cb (EV_P_ void (*release)(EV_P) EV_THROW, void (*acquire)(EV_P) EV_THROW) EV_THROW
1725	{	2837	{
1726	release_cb = release;	2838	release_cb = release;
1727	acquire_cb = acquire;	2839	acquire_cb = acquire;
1728	}	2840	}
1729	#endif	2841	#endif
1730		2842
1731	/* initialise a loop structure, must be zero-initialised */	2843	/* initialise a loop structure, must be zero-initialised */
1732	static void noinline	2844	noinline ecb_cold
		2845	static void
1733	loop_init (EV_P_ unsigned int flags)	2846	loop_init (EV_P_ unsigned int flags) EV_THROW
1734	{	2847	{
1735	if (!backend)	2848	if (!backend)
1736	{	2849	{
1737	origflags = flags;	2850	origflags = flags;
1738		2851
…		…
1765	if (!(flags & EVFLAG_NOENV)	2878	if (!(flags & EVFLAG_NOENV)
1766	&& !enable_secure ()	2879	&& !enable_secure ()
1767	&& getenv ("LIBEV_FLAGS"))	2880	&& getenv ("LIBEV_FLAGS"))
1768	flags = atoi (getenv ("LIBEV_FLAGS"));	2881	flags = atoi (getenv ("LIBEV_FLAGS"));
1769		2882
1770	ev_rt_now = ev_time ();	2883	ev_rt_now = ev_time ();
1771	mn_now = get_clock ();	2884	mn_now = get_clock ();
1772	now_floor = mn_now;	2885	now_floor = mn_now;
1773	rtmn_diff = ev_rt_now - mn_now;	2886	rtmn_diff = ev_rt_now - mn_now;
1774	#if EV_FEATURE_API	2887	#if EV_FEATURE_API
1775	invoke_cb = ev_invoke_pending;	2888	invoke_cb = ev_invoke_pending;
1776	#endif	2889	#endif
1777		2890
1778	io_blocktime = 0.;	2891	io_blocktime = 0.;
1779	timeout_blocktime = 0.;	2892	timeout_blocktime = 0.;
1780	backend = 0;	2893	backend = 0;
1781	backend_fd = -1;	2894	backend_fd = -1;
1782	sig_pending = 0;	2895	sig_pending = 0;
1783	#if EV_ASYNC_ENABLE	2896	#if EV_ASYNC_ENABLE
1784	async_pending = 0;	2897	async_pending = 0;
1785	#endif	2898	#endif
		2899	pipe_write_skipped = 0;
		2900	pipe_write_wanted = 0;
		2901	evpipe [0] = -1;
		2902	evpipe [1] = -1;
1786	#if EV_USE_INOTIFY	2903	#if EV_USE_INOTIFY
1787	fs_fd = flags & EVFLAG_NOINOTIFY ? -1 : -2;	2904	fs_fd = flags & EVFLAG_NOINOTIFY ? -1 : -2;
1788	#endif	2905	#endif
1789	#if EV_USE_SIGNALFD	2906	#if EV_USE_SIGNALFD
1790	sigfd = flags & EVFLAG_SIGNALFD ? -2 : -1;	2907	sigfd = flags & EVFLAG_SIGNALFD ? -2 : -1;
1791	#endif	2908	#endif
1792		2909
1793	if (!(flags & EVBACKEND_MASK))	2910	if (!(flags & EVBACKEND_MASK))
1794	flags |= ev_recommended_backends ();	2911	flags |= ev_recommended_backends ();
1795		2912
…		…
1820	#endif	2937	#endif
1821	}	2938	}
1822	}	2939	}
1823		2940
1824	/* free up a loop structure */	2941	/* free up a loop structure */
		2942	ecb_cold
1825	void	2943	void
1826	ev_loop_destroy (EV_P)	2944	ev_loop_destroy (EV_P)
1827	{	2945	{
1828	int i;	2946	int i;
1829		2947
…		…
1841	EV_INVOKE_PENDING;	2959	EV_INVOKE_PENDING;
1842	}	2960	}
1843	#endif	2961	#endif
1844		2962
1845	#if EV_CHILD_ENABLE	2963	#if EV_CHILD_ENABLE
1846	if (ev_is_active (&childev))	2964	if (ev_is_default_loop (EV_A) && ev_is_active (&childev))
1847	{	2965	{
1848	ev_ref (EV_A); /* child watcher */	2966	ev_ref (EV_A); /* child watcher */
1849	ev_signal_stop (EV_A_ &childev);	2967	ev_signal_stop (EV_A_ &childev);
1850	}	2968	}
1851	#endif	2969	#endif
…		…
1853	if (ev_is_active (&pipe_w))	2971	if (ev_is_active (&pipe_w))
1854	{	2972	{
1855	/*ev_ref (EV_A);*/	2973	/*ev_ref (EV_A);*/
1856	/*ev_io_stop (EV_A_ &pipe_w);*/	2974	/*ev_io_stop (EV_A_ &pipe_w);*/
1857		2975
1858	#if EV_USE_EVENTFD
1859	if (evfd >= 0)
1860	close (evfd);
1861	#endif
1862
1863	if (evpipe [0] >= 0)
1864	{
1865	EV_WIN32_CLOSE_FD (evpipe [0]);	2976	if (evpipe [0] >= 0) EV_WIN32_CLOSE_FD (evpipe [0]);
1866	EV_WIN32_CLOSE_FD (evpipe [1]);	2977	if (evpipe [1] >= 0) EV_WIN32_CLOSE_FD (evpipe [1]);
1867	}
1868	}	2978	}
1869		2979
1870	#if EV_USE_SIGNALFD	2980	#if EV_USE_SIGNALFD
1871	if (ev_is_active (&sigfd_w))	2981	if (ev_is_active (&sigfd_w))
1872	close (sigfd);	2982	close (sigfd);
…		…
1958	#endif	3068	#endif
1959	#if EV_USE_INOTIFY	3069	#if EV_USE_INOTIFY
1960	infy_fork (EV_A);	3070	infy_fork (EV_A);
1961	#endif	3071	#endif
1962		3072
		3073	#if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE
1963	if (ev_is_active (&pipe_w))	3074	if (ev_is_active (&pipe_w) && postfork != 2)
1964	{	3075	{
1965	/* this "locks" the handlers against writing to the pipe */	3076	/* pipe_write_wanted must be false now, so modifying fd vars should be safe */
1966	/* while we modify the fd vars */
1967	sig_pending = 1;
1968	#if EV_ASYNC_ENABLE
1969	async_pending = 1;
1970	#endif
1971		3077
1972	ev_ref (EV_A);	3078	ev_ref (EV_A);
1973	ev_io_stop (EV_A_ &pipe_w);	3079	ev_io_stop (EV_A_ &pipe_w);
1974		3080
1975	#if EV_USE_EVENTFD
1976	if (evfd >= 0)
1977	close (evfd);
1978	#endif
1979
1980	if (evpipe [0] >= 0)	3081	if (evpipe [0] >= 0)
1981	{
1982	EV_WIN32_CLOSE_FD (evpipe [0]);	3082	EV_WIN32_CLOSE_FD (evpipe [0]);
1983	EV_WIN32_CLOSE_FD (evpipe [1]);
1984	}
1985		3083
1986	#if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE
1987	evpipe_init (EV_A);	3084	evpipe_init (EV_A);
1988	/* now iterate over everything, in case we missed something */	3085	/* iterate over everything, in case we missed something before */
1989	pipecb (EV_A_ &pipe_w, EV_READ);	3086	ev_feed_event (EV_A_ &pipe_w, EV_CUSTOM);
1990	#endif
1991	}	3087	}
		3088	#endif
1992		3089
1993	postfork = 0;	3090	postfork = 0;
1994	}	3091	}
1995		3092
1996	#if EV_MULTIPLICITY	3093	#if EV_MULTIPLICITY
1997		3094
		3095	ecb_cold
1998	struct ev_loop *	3096	struct ev_loop *
1999	ev_loop_new (unsigned int flags)	3097	ev_loop_new (unsigned int flags) EV_THROW
2000	{	3098	{
2001	EV_P = (struct ev_loop *)ev_malloc (sizeof (struct ev_loop));	3099	EV_P = (struct ev_loop *)ev_malloc (sizeof (struct ev_loop));
2002		3100
2003	memset (EV_A, 0, sizeof (struct ev_loop));	3101	memset (EV_A, 0, sizeof (struct ev_loop));
2004	loop_init (EV_A_ flags);	3102	loop_init (EV_A_ flags);
…		…
2011	}	3109	}
2012		3110
2013	#endif /* multiplicity */	3111	#endif /* multiplicity */
2014		3112
2015	#if EV_VERIFY	3113	#if EV_VERIFY
2016	static void noinline	3114	noinline ecb_cold
		3115	static void
2017	verify_watcher (EV_P_ W w)	3116	verify_watcher (EV_P_ W w)
2018	{	3117	{
2019	assert (("libev: watcher has invalid priority", ABSPRI (w) >= 0 && ABSPRI (w) < NUMPRI));	3118	assert (("libev: watcher has invalid priority", ABSPRI (w) >= 0 && ABSPRI (w) < NUMPRI));
2020		3119
2021	if (w->pending)	3120	if (w->pending)
2022	assert (("libev: pending watcher not on pending queue", pendings [ABSPRI (w)][w->pending - 1].w == w));	3121	assert (("libev: pending watcher not on pending queue", pendings [ABSPRI (w)][w->pending - 1].w == w));
2023	}	3122	}
2024		3123
2025	static void noinline	3124	noinline ecb_cold
		3125	static void
2026	verify_heap (EV_P_ ANHE *heap, int N)	3126	verify_heap (EV_P_ ANHE *heap, int N)
2027	{	3127	{
2028	int i;	3128	int i;
2029		3129
2030	for (i = HEAP0; i < N + HEAP0; ++i)	3130	for (i = HEAP0; i < N + HEAP0; ++i)
…		…
2035		3135
2036	verify_watcher (EV_A_ (W)ANHE_w (heap [i]));	3136	verify_watcher (EV_A_ (W)ANHE_w (heap [i]));
2037	}	3137	}
2038	}	3138	}
2039		3139
2040	static void noinline	3140	noinline ecb_cold
		3141	static void
2041	array_verify (EV_P_ W *ws, int cnt)	3142	array_verify (EV_P_ W *ws, int cnt)
2042	{	3143	{
2043	while (cnt--)	3144	while (cnt--)
2044	{	3145	{
2045	assert (("libev: active index mismatch", ev_active (ws [cnt]) == cnt + 1));	3146	assert (("libev: active index mismatch", ev_active (ws [cnt]) == cnt + 1));
…		…
2047	}	3148	}
2048	}	3149	}
2049	#endif	3150	#endif
2050		3151
2051	#if EV_FEATURE_API	3152	#if EV_FEATURE_API
2052	void	3153	void ecb_cold
2053	ev_verify (EV_P)	3154	ev_verify (EV_P) EV_THROW
2054	{	3155	{
2055	#if EV_VERIFY	3156	#if EV_VERIFY
2056	int i;	3157	int i;
2057	WL w;	3158	WL w, w2;
2058		3159
2059	assert (activecnt >= -1);	3160	assert (activecnt >= -1);
2060		3161
2061	assert (fdchangemax >= fdchangecnt);	3162	assert (fdchangemax >= fdchangecnt);
2062	for (i = 0; i < fdchangecnt; ++i)	3163	for (i = 0; i < fdchangecnt; ++i)
2063	assert (("libev: negative fd in fdchanges", fdchanges [i] >= 0));	3164	assert (("libev: negative fd in fdchanges", fdchanges [i] >= 0));
2064		3165
2065	assert (anfdmax >= 0);	3166	assert (anfdmax >= 0);
2066	for (i = 0; i < anfdmax; ++i)	3167	for (i = 0; i < anfdmax; ++i)
		3168	{
		3169	int j = 0;
		3170
2067	for (w = anfds [i].head; w; w = w->next)	3171	for (w = w2 = anfds [i].head; w; w = w->next)
2068	{	3172	{
2069	verify_watcher (EV_A_ (W)w);	3173	verify_watcher (EV_A_ (W)w);
		3174
		3175	if (j++ & 1)
		3176	{
		3177	assert (("libev: io watcher list contains a loop", w != w2));
		3178	w2 = w2->next;
		3179	}
		3180
2070	assert (("libev: inactive fd watcher on anfd list", ev_active (w) == 1));	3181	assert (("libev: inactive fd watcher on anfd list", ev_active (w) == 1));
2071	assert (("libev: fd mismatch between watcher and anfd", ((ev_io *)w)->fd == i));	3182	assert (("libev: fd mismatch between watcher and anfd", ((ev_io *)w)->fd == i));
2072	}	3183	}
		3184	}
2073		3185
2074	assert (timermax >= timercnt);	3186	assert (timermax >= timercnt);
2075	verify_heap (EV_A_ timers, timercnt);	3187	verify_heap (EV_A_ timers, timercnt);
2076		3188
2077	#if EV_PERIODIC_ENABLE	3189	#if EV_PERIODIC_ENABLE
…		…
2123	#endif	3235	#endif
2124	}	3236	}
2125	#endif	3237	#endif
2126		3238
2127	#if EV_MULTIPLICITY	3239	#if EV_MULTIPLICITY
		3240	ecb_cold
2128	struct ev_loop *	3241	struct ev_loop *
2129	#else	3242	#else
2130	int	3243	int
2131	#endif	3244	#endif
2132	ev_default_loop (unsigned int flags)	3245	ev_default_loop (unsigned int flags) EV_THROW
2133	{	3246	{
2134	if (!ev_default_loop_ptr)	3247	if (!ev_default_loop_ptr)
2135	{	3248	{
2136	#if EV_MULTIPLICITY	3249	#if EV_MULTIPLICITY
2137	EV_P = ev_default_loop_ptr = &default_loop_struct;	3250	EV_P = ev_default_loop_ptr = &default_loop_struct;
…		…
2156		3269
2157	return ev_default_loop_ptr;	3270	return ev_default_loop_ptr;
2158	}	3271	}
2159		3272
2160	void	3273	void
2161	ev_loop_fork (EV_P)	3274	ev_loop_fork (EV_P) EV_THROW
2162	{	3275	{
2163	postfork = 1; /* must be in line with ev_default_fork */	3276	postfork = 1;
2164	}	3277	}
2165		3278
2166	/*****************************************************************************/	3279	/*****************************************************************************/
2167		3280
2168	void	3281	void
…		…
2170	{	3283	{
2171	EV_CB_INVOKE ((W)w, revents);	3284	EV_CB_INVOKE ((W)w, revents);
2172	}	3285	}
2173		3286
2174	unsigned int	3287	unsigned int
2175	ev_pending_count (EV_P)	3288	ev_pending_count (EV_P) EV_THROW
2176	{	3289	{
2177	int pri;	3290	int pri;
2178	unsigned int count = 0;	3291	unsigned int count = 0;
2179		3292
2180	for (pri = NUMPRI; pri--; )	3293	for (pri = NUMPRI; pri--; )
2181	count += pendingcnt [pri];	3294	count += pendingcnt [pri];
2182		3295
2183	return count;	3296	return count;
2184	}	3297	}
2185		3298
2186	void noinline	3299	noinline
		3300	void
2187	ev_invoke_pending (EV_P)	3301	ev_invoke_pending (EV_P)
2188	{	3302	{
2189	int pri;	3303	pendingpri = NUMPRI;
2190		3304
2191	for (pri = NUMPRI; pri--; )	3305	while (pendingpri) /* pendingpri possibly gets modified in the inner loop */
		3306	{
		3307	--pendingpri;
		3308
2192	while (pendingcnt [pri])	3309	while (pendingcnt [pendingpri])
2193	{	3310	{
2194	ANPENDING *p = pendings [pri] + --pendingcnt [pri];	3311	ANPENDING *p = pendings [pendingpri] + --pendingcnt [pendingpri];
2195		3312
2196	p->w->pending = 0;	3313	p->w->pending = 0;
2197	EV_CB_INVOKE (p->w, p->events);	3314	EV_CB_INVOKE (p->w, p->events);
2198	EV_FREQUENT_CHECK;	3315	EV_FREQUENT_CHECK;
2199	}	3316	}
		3317	}
2200	}	3318	}
2201		3319
2202	#if EV_IDLE_ENABLE	3320	#if EV_IDLE_ENABLE
2203	/* make idle watchers pending. this handles the "call-idle */	3321	/* make idle watchers pending. this handles the "call-idle */
2204	/* only when higher priorities are idle" logic */	3322	/* only when higher priorities are idle" logic */
…		…
2262	}	3380	}
2263	}	3381	}
2264		3382
2265	#if EV_PERIODIC_ENABLE	3383	#if EV_PERIODIC_ENABLE
2266		3384
2267	static void noinline	3385	noinline
		3386	static void
2268	periodic_recalc (EV_P_ ev_periodic *w)	3387	periodic_recalc (EV_P_ ev_periodic *w)
2269	{	3388	{
2270	ev_tstamp interval = w->interval > MIN_INTERVAL ? w->interval : MIN_INTERVAL;	3389	ev_tstamp interval = w->interval > MIN_INTERVAL ? w->interval : MIN_INTERVAL;
2271	ev_tstamp at = w->offset + interval * ev_floor ((ev_rt_now - w->offset) / interval);	3390	ev_tstamp at = w->offset + interval * ev_floor ((ev_rt_now - w->offset) / interval);
2272		3391
…		…
2294	{	3413	{
2295	EV_FREQUENT_CHECK;	3414	EV_FREQUENT_CHECK;
2296		3415
2297	while (periodiccnt && ANHE_at (periodics [HEAP0]) < ev_rt_now)	3416	while (periodiccnt && ANHE_at (periodics [HEAP0]) < ev_rt_now)
2298	{	3417	{
2299	int feed_count = 0;
2300
2301	do	3418	do
2302	{	3419	{
2303	ev_periodic *w = (ev_periodic *)ANHE_w (periodics [HEAP0]);	3420	ev_periodic *w = (ev_periodic *)ANHE_w (periodics [HEAP0]);
2304		3421
2305	/*assert (("libev: inactive timer on periodic heap detected", ev_is_active (w)));*/	3422	/*assert (("libev: inactive timer on periodic heap detected", ev_is_active (w)));*/
…		…
2332	}	3449	}
2333	}	3450	}
2334		3451
2335	/* simply recalculate all periodics */	3452	/* simply recalculate all periodics */
2336	/* TODO: maybe ensure that at least one event happens when jumping forward? */	3453	/* TODO: maybe ensure that at least one event happens when jumping forward? */
2337	static void noinline	3454	noinline ecb_cold
		3455	static void
2338	periodics_reschedule (EV_P)	3456	periodics_reschedule (EV_P)
2339	{	3457	{
2340	int i;	3458	int i;
2341		3459
2342	/* adjust periodics after time jump */	3460	/* adjust periodics after time jump */
…		…
2355	reheap (periodics, periodiccnt);	3473	reheap (periodics, periodiccnt);
2356	}	3474	}
2357	#endif	3475	#endif
2358		3476
2359	/* adjust all timers by a given offset */	3477	/* adjust all timers by a given offset */
2360	static void noinline	3478	noinline ecb_cold
		3479	static void
2361	timers_reschedule (EV_P_ ev_tstamp adjust)	3480	timers_reschedule (EV_P_ ev_tstamp adjust)
2362	{	3481	{
2363	int i;	3482	int i;
2364		3483
2365	for (i = 0; i < timercnt; ++i)	3484	for (i = 0; i < timercnt; ++i)
…		…
2439		3558
2440	mn_now = ev_rt_now;	3559	mn_now = ev_rt_now;
2441	}	3560	}
2442	}	3561	}
2443		3562
2444	void	3563	int
2445	ev_run (EV_P_ int flags)	3564	ev_run (EV_P_ int flags)
2446	{	3565	{
2447	#if EV_FEATURE_API	3566	#if EV_FEATURE_API
2448	++loop_depth;	3567	++loop_depth;
2449	#endif	3568	#endif
…		…
2507	ev_tstamp prev_mn_now = mn_now;	3626	ev_tstamp prev_mn_now = mn_now;
2508		3627
2509	/* update time to cancel out callback processing overhead */	3628	/* update time to cancel out callback processing overhead */
2510	time_update (EV_A_ 1e100);	3629	time_update (EV_A_ 1e100);
2511		3630
		3631	/* from now on, we want a pipe-wake-up */
		3632	pipe_write_wanted = 1;
		3633
		3634	ECB_MEMORY_FENCE; /* make sure pipe_write_wanted is visible before we check for potential skips */
		3635
2512	if (expect_true (!(flags & EVRUN_NOWAIT || idleall || !activecnt)))	3636	if (expect_true (!(flags & EVRUN_NOWAIT || idleall || !activecnt || pipe_write_skipped)))
2513	{	3637	{
2514	waittime = MAX_BLOCKTIME;	3638	waittime = MAX_BLOCKTIME;
2515		3639
2516	if (timercnt)	3640	if (timercnt)
2517	{	3641	{
2518	ev_tstamp to = ANHE_at (timers [HEAP0]) - mn_now + backend_fudge;	3642	ev_tstamp to = ANHE_at (timers [HEAP0]) - mn_now;
2519	if (waittime > to) waittime = to;	3643	if (waittime > to) waittime = to;
2520	}	3644	}
2521		3645
2522	#if EV_PERIODIC_ENABLE	3646	#if EV_PERIODIC_ENABLE
2523	if (periodiccnt)	3647	if (periodiccnt)
2524	{	3648	{
2525	ev_tstamp to = ANHE_at (periodics [HEAP0]) - ev_rt_now + backend_fudge;	3649	ev_tstamp to = ANHE_at (periodics [HEAP0]) - ev_rt_now;
2526	if (waittime > to) waittime = to;	3650	if (waittime > to) waittime = to;
2527	}	3651	}
2528	#endif	3652	#endif
2529		3653
2530	/* don't let timeouts decrease the waittime below timeout_blocktime */	3654	/* don't let timeouts decrease the waittime below timeout_blocktime */
2531	if (expect_false (waittime < timeout_blocktime))	3655	if (expect_false (waittime < timeout_blocktime))
2532	waittime = timeout_blocktime;	3656	waittime = timeout_blocktime;
		3657
		3658	/* at this point, we NEED to wait, so we have to ensure */
		3659	/* to pass a minimum nonzero value to the backend */
		3660	if (expect_false (waittime < backend_mintime))
		3661	waittime = backend_mintime;
2533		3662
2534	/* extra check because io_blocktime is commonly 0 */	3663	/* extra check because io_blocktime is commonly 0 */
2535	if (expect_false (io_blocktime))	3664	if (expect_false (io_blocktime))
2536	{	3665	{
2537	sleeptime = io_blocktime - (mn_now - prev_mn_now);	3666	sleeptime = io_blocktime - (mn_now - prev_mn_now);
2538		3667
2539	if (sleeptime > waittime - backend_fudge)	3668	if (sleeptime > waittime - backend_mintime)
2540	sleeptime = waittime - backend_fudge;	3669	sleeptime = waittime - backend_mintime;
2541		3670
2542	if (expect_true (sleeptime > 0.))	3671	if (expect_true (sleeptime > 0.))
2543	{	3672	{
2544	ev_sleep (sleeptime);	3673	ev_sleep (sleeptime);
2545	waittime -= sleeptime;	3674	waittime -= sleeptime;
…		…
2552	#endif	3681	#endif
2553	assert ((loop_done = EVBREAK_RECURSE, 1)); /* assert for side effect */	3682	assert ((loop_done = EVBREAK_RECURSE, 1)); /* assert for side effect */
2554	backend_poll (EV_A_ waittime);	3683	backend_poll (EV_A_ waittime);
2555	assert ((loop_done = EVBREAK_CANCEL, 1)); /* assert for side effect */	3684	assert ((loop_done = EVBREAK_CANCEL, 1)); /* assert for side effect */
2556		3685
		3686	pipe_write_wanted = 0; /* just an optimisation, no fence needed */
		3687
		3688	ECB_MEMORY_FENCE_ACQUIRE;
		3689	if (pipe_write_skipped)
		3690	{
		3691	assert (("libev: pipe_w not active, but pipe not written", ev_is_active (&pipe_w)));
		3692	ev_feed_event (EV_A_ &pipe_w, EV_CUSTOM);
		3693	}
		3694
		3695
2557	/* update ev_rt_now, do magic */	3696	/* update ev_rt_now, do magic */
2558	time_update (EV_A_ waittime + sleeptime);	3697	time_update (EV_A_ waittime + sleeptime);
2559	}	3698	}
2560		3699
2561	/* queue pending timers and reschedule them */	3700	/* queue pending timers and reschedule them */
…		…
2587	loop_done = EVBREAK_CANCEL;	3726	loop_done = EVBREAK_CANCEL;
2588		3727
2589	#if EV_FEATURE_API	3728	#if EV_FEATURE_API
2590	--loop_depth;	3729	--loop_depth;
2591	#endif	3730	#endif
2592	}
2593		3731
		3732	return activecnt;
		3733	}
		3734
2594	void	3735	void
2595	ev_break (EV_P_ int how)	3736	ev_break (EV_P_ int how) EV_THROW
2596	{	3737	{
2597	loop_done = how;	3738	loop_done = how;
2598	}	3739	}
2599		3740
2600	void	3741	void
2601	ev_ref (EV_P)	3742	ev_ref (EV_P) EV_THROW
2602	{	3743	{
2603	++activecnt;	3744	++activecnt;
2604	}	3745	}
2605		3746
2606	void	3747	void
2607	ev_unref (EV_P)	3748	ev_unref (EV_P) EV_THROW
2608	{	3749	{
2609	--activecnt;	3750	--activecnt;
2610	}	3751	}
2611		3752
2612	void	3753	void
2613	ev_now_update (EV_P)	3754	ev_now_update (EV_P) EV_THROW
2614	{	3755	{
2615	time_update (EV_A_ 1e100);	3756	time_update (EV_A_ 1e100);
2616	}	3757	}
2617		3758
2618	void	3759	void
2619	ev_suspend (EV_P)	3760	ev_suspend (EV_P) EV_THROW
2620	{	3761	{
2621	ev_now_update (EV_A);	3762	ev_now_update (EV_A);
2622	}	3763	}
2623		3764
2624	void	3765	void
2625	ev_resume (EV_P)	3766	ev_resume (EV_P) EV_THROW
2626	{	3767	{
2627	ev_tstamp mn_prev = mn_now;	3768	ev_tstamp mn_prev = mn_now;
2628		3769
2629	ev_now_update (EV_A);	3770	ev_now_update (EV_A);
2630	timers_reschedule (EV_A_ mn_now - mn_prev);	3771	timers_reschedule (EV_A_ mn_now - mn_prev);
…		…
2669	w->pending = 0;	3810	w->pending = 0;
2670	}	3811	}
2671	}	3812	}
2672		3813
2673	int	3814	int
2674	ev_clear_pending (EV_P_ void *w)	3815	ev_clear_pending (EV_P_ void *w) EV_THROW
2675	{	3816	{
2676	W w_ = (W)w;	3817	W w_ = (W)w;
2677	int pending = w_->pending;	3818	int pending = w_->pending;
2678		3819
2679	if (expect_true (pending))	3820	if (expect_true (pending))
…		…
2711	w->active = 0;	3852	w->active = 0;
2712	}	3853	}
2713		3854
2714	/*****************************************************************************/	3855	/*****************************************************************************/
2715		3856
2716	void noinline	3857	noinline
		3858	void
2717	ev_io_start (EV_P_ ev_io *w)	3859	ev_io_start (EV_P_ ev_io *w) EV_THROW
2718	{	3860	{
2719	int fd = w->fd;	3861	int fd = w->fd;
2720		3862
2721	if (expect_false (ev_is_active (w)))	3863	if (expect_false (ev_is_active (w)))
2722	return;	3864	return;
…		…
2728		3870
2729	ev_start (EV_A_ (W)w, 1);	3871	ev_start (EV_A_ (W)w, 1);
2730	array_needsize (ANFD, anfds, anfdmax, fd + 1, array_init_zero);	3872	array_needsize (ANFD, anfds, anfdmax, fd + 1, array_init_zero);
2731	wlist_add (&anfds[fd].head, (WL)w);	3873	wlist_add (&anfds[fd].head, (WL)w);
2732		3874
		3875	/* common bug, apparently */
		3876	assert (("libev: ev_io_start called with corrupted watcher", ((WL)w)->next != (WL)w));
		3877
2733	fd_change (EV_A_ fd, w->events & EV__IOFDSET | EV_ANFD_REIFY);	3878	fd_change (EV_A_ fd, w->events & EV__IOFDSET | EV_ANFD_REIFY);
2734	w->events &= ~EV__IOFDSET;	3879	w->events &= ~EV__IOFDSET;
2735		3880
2736	EV_FREQUENT_CHECK;	3881	EV_FREQUENT_CHECK;
2737	}	3882	}
2738		3883
2739	void noinline	3884	noinline
		3885	void
2740	ev_io_stop (EV_P_ ev_io *w)	3886	ev_io_stop (EV_P_ ev_io *w) EV_THROW
2741	{	3887	{
2742	clear_pending (EV_A_ (W)w);	3888	clear_pending (EV_A_ (W)w);
2743	if (expect_false (!ev_is_active (w)))	3889	if (expect_false (!ev_is_active (w)))
2744	return;	3890	return;
2745		3891
…		…
2753	fd_change (EV_A_ w->fd, EV_ANFD_REIFY);	3899	fd_change (EV_A_ w->fd, EV_ANFD_REIFY);
2754		3900
2755	EV_FREQUENT_CHECK;	3901	EV_FREQUENT_CHECK;
2756	}	3902	}
2757		3903
2758	void noinline	3904	noinline
		3905	void
2759	ev_timer_start (EV_P_ ev_timer *w)	3906	ev_timer_start (EV_P_ ev_timer *w) EV_THROW
2760	{	3907	{
2761	if (expect_false (ev_is_active (w)))	3908	if (expect_false (ev_is_active (w)))
2762	return;	3909	return;
2763		3910
2764	ev_at (w) += mn_now;	3911	ev_at (w) += mn_now;
…		…
2777	EV_FREQUENT_CHECK;	3924	EV_FREQUENT_CHECK;
2778		3925
2779	/*assert (("libev: internal timer heap corruption", timers [ev_active (w)] == (WT)w));*/	3926	/*assert (("libev: internal timer heap corruption", timers [ev_active (w)] == (WT)w));*/
2780	}	3927	}
2781		3928
2782	void noinline	3929	noinline
		3930	void
2783	ev_timer_stop (EV_P_ ev_timer *w)	3931	ev_timer_stop (EV_P_ ev_timer *w) EV_THROW
2784	{	3932	{
2785	clear_pending (EV_A_ (W)w);	3933	clear_pending (EV_A_ (W)w);
2786	if (expect_false (!ev_is_active (w)))	3934	if (expect_false (!ev_is_active (w)))
2787	return;	3935	return;
2788		3936
…		…
2807	ev_stop (EV_A_ (W)w);	3955	ev_stop (EV_A_ (W)w);
2808		3956
2809	EV_FREQUENT_CHECK;	3957	EV_FREQUENT_CHECK;
2810	}	3958	}
2811		3959
2812	void noinline	3960	noinline
		3961	void
2813	ev_timer_again (EV_P_ ev_timer *w)	3962	ev_timer_again (EV_P_ ev_timer *w) EV_THROW
2814	{	3963	{
2815	EV_FREQUENT_CHECK;	3964	EV_FREQUENT_CHECK;
		3965
		3966	clear_pending (EV_A_ (W)w);
2816		3967
2817	if (ev_is_active (w))	3968	if (ev_is_active (w))
2818	{	3969	{
2819	if (w->repeat)	3970	if (w->repeat)
2820	{	3971	{
…		…
2833		3984
2834	EV_FREQUENT_CHECK;	3985	EV_FREQUENT_CHECK;
2835	}	3986	}
2836		3987
2837	ev_tstamp	3988	ev_tstamp
2838	ev_timer_remaining (EV_P_ ev_timer *w)	3989	ev_timer_remaining (EV_P_ ev_timer *w) EV_THROW
2839	{	3990	{
2840	return ev_at (w) - (ev_is_active (w) ? mn_now : 0.);	3991	return ev_at (w) - (ev_is_active (w) ? mn_now : 0.);
2841	}	3992	}
2842		3993
2843	#if EV_PERIODIC_ENABLE	3994	#if EV_PERIODIC_ENABLE
2844	void noinline	3995	noinline
		3996	void
2845	ev_periodic_start (EV_P_ ev_periodic *w)	3997	ev_periodic_start (EV_P_ ev_periodic *w) EV_THROW
2846	{	3998	{
2847	if (expect_false (ev_is_active (w)))	3999	if (expect_false (ev_is_active (w)))
2848	return;	4000	return;
2849		4001
2850	if (w->reschedule_cb)	4002	if (w->reschedule_cb)
…		…
2869	EV_FREQUENT_CHECK;	4021	EV_FREQUENT_CHECK;
2870		4022
2871	/*assert (("libev: internal periodic heap corruption", ANHE_w (periodics [ev_active (w)]) == (WT)w));*/	4023	/*assert (("libev: internal periodic heap corruption", ANHE_w (periodics [ev_active (w)]) == (WT)w));*/
2872	}	4024	}
2873		4025
2874	void noinline	4026	noinline
		4027	void
2875	ev_periodic_stop (EV_P_ ev_periodic *w)	4028	ev_periodic_stop (EV_P_ ev_periodic *w) EV_THROW
2876	{	4029	{
2877	clear_pending (EV_A_ (W)w);	4030	clear_pending (EV_A_ (W)w);
2878	if (expect_false (!ev_is_active (w)))	4031	if (expect_false (!ev_is_active (w)))
2879	return;	4032	return;
2880		4033
…		…
2897	ev_stop (EV_A_ (W)w);	4050	ev_stop (EV_A_ (W)w);
2898		4051
2899	EV_FREQUENT_CHECK;	4052	EV_FREQUENT_CHECK;
2900	}	4053	}
2901		4054
2902	void noinline	4055	noinline
		4056	void
2903	ev_periodic_again (EV_P_ ev_periodic *w)	4057	ev_periodic_again (EV_P_ ev_periodic *w) EV_THROW
2904	{	4058	{
2905	/* TODO: use adjustheap and recalculation */	4059	/* TODO: use adjustheap and recalculation */
2906	ev_periodic_stop (EV_A_ w);	4060	ev_periodic_stop (EV_A_ w);
2907	ev_periodic_start (EV_A_ w);	4061	ev_periodic_start (EV_A_ w);
2908	}	4062	}
…		…
2912	# define SA_RESTART 0	4066	# define SA_RESTART 0
2913	#endif	4067	#endif
2914		4068
2915	#if EV_SIGNAL_ENABLE	4069	#if EV_SIGNAL_ENABLE
2916		4070
2917	void noinline	4071	noinline
		4072	void
2918	ev_signal_start (EV_P_ ev_signal *w)	4073	ev_signal_start (EV_P_ ev_signal *w) EV_THROW
2919	{	4074	{
2920	if (expect_false (ev_is_active (w)))	4075	if (expect_false (ev_is_active (w)))
2921	return;	4076	return;
2922		4077
2923	assert (("libev: ev_signal_start called with illegal signal number", w->signum > 0 && w->signum < EV_NSIG));	4078	assert (("libev: ev_signal_start called with illegal signal number", w->signum > 0 && w->signum < EV_NSIG));
…		…
2925	#if EV_MULTIPLICITY	4080	#if EV_MULTIPLICITY
2926	assert (("libev: a signal must not be attached to two different loops",	4081	assert (("libev: a signal must not be attached to two different loops",
2927	!signals [w->signum - 1].loop || signals [w->signum - 1].loop == loop));	4082	!signals [w->signum - 1].loop || signals [w->signum - 1].loop == loop));
2928		4083
2929	signals [w->signum - 1].loop = EV_A;	4084	signals [w->signum - 1].loop = EV_A;
		4085	ECB_MEMORY_FENCE_RELEASE;
2930	#endif	4086	#endif
2931		4087
2932	EV_FREQUENT_CHECK;	4088	EV_FREQUENT_CHECK;
2933		4089
2934	#if EV_USE_SIGNALFD	4090	#if EV_USE_SIGNALFD
…		…
2993	}	4149	}
2994		4150
2995	EV_FREQUENT_CHECK;	4151	EV_FREQUENT_CHECK;
2996	}	4152	}
2997		4153
2998	void noinline	4154	noinline
		4155	void
2999	ev_signal_stop (EV_P_ ev_signal *w)	4156	ev_signal_stop (EV_P_ ev_signal *w) EV_THROW
3000	{	4157	{
3001	clear_pending (EV_A_ (W)w);	4158	clear_pending (EV_A_ (W)w);
3002	if (expect_false (!ev_is_active (w)))	4159	if (expect_false (!ev_is_active (w)))
3003	return;	4160	return;
3004		4161
…		…
3035	#endif	4192	#endif
3036		4193
3037	#if EV_CHILD_ENABLE	4194	#if EV_CHILD_ENABLE
3038		4195
3039	void	4196	void
3040	ev_child_start (EV_P_ ev_child *w)	4197	ev_child_start (EV_P_ ev_child *w) EV_THROW
3041	{	4198	{
3042	#if EV_MULTIPLICITY	4199	#if EV_MULTIPLICITY
3043	assert (("libev: child watchers are only supported in the default loop", loop == ev_default_loop_ptr));	4200	assert (("libev: child watchers are only supported in the default loop", loop == ev_default_loop_ptr));
3044	#endif	4201	#endif
3045	if (expect_false (ev_is_active (w)))	4202	if (expect_false (ev_is_active (w)))
…		…
3052		4209
3053	EV_FREQUENT_CHECK;	4210	EV_FREQUENT_CHECK;
3054	}	4211	}
3055		4212
3056	void	4213	void
3057	ev_child_stop (EV_P_ ev_child *w)	4214	ev_child_stop (EV_P_ ev_child *w) EV_THROW
3058	{	4215	{
3059	clear_pending (EV_A_ (W)w);	4216	clear_pending (EV_A_ (W)w);
3060	if (expect_false (!ev_is_active (w)))	4217	if (expect_false (!ev_is_active (w)))
3061	return;	4218	return;
3062		4219
…		…
3079		4236
3080	#define DEF_STAT_INTERVAL 5.0074891	4237	#define DEF_STAT_INTERVAL 5.0074891
3081	#define NFS_STAT_INTERVAL 30.1074891 /* for filesystems potentially failing inotify */	4238	#define NFS_STAT_INTERVAL 30.1074891 /* for filesystems potentially failing inotify */
3082	#define MIN_STAT_INTERVAL 0.1074891	4239	#define MIN_STAT_INTERVAL 0.1074891
3083		4240
3084	static void noinline stat_timer_cb (EV_P_ ev_timer *w_, int revents);	4241	noinline static void stat_timer_cb (EV_P_ ev_timer *w_, int revents);
3085		4242
3086	#if EV_USE_INOTIFY	4243	#if EV_USE_INOTIFY
3087		4244
3088	/* the * 2 is to allow for alignment padding, which for some reason is >> 8 */	4245	/* the * 2 is to allow for alignment padding, which for some reason is >> 8 */
3089	# define EV_INOTIFY_BUFSIZE (sizeof (struct inotify_event) * 2 + NAME_MAX)	4246	# define EV_INOTIFY_BUFSIZE (sizeof (struct inotify_event) * 2 + NAME_MAX)
3090		4247
3091	static void noinline	4248	noinline
		4249	static void
3092	infy_add (EV_P_ ev_stat *w)	4250	infy_add (EV_P_ ev_stat *w)
3093	{	4251	{
3094	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);	4252	w->wd = inotify_add_watch (fs_fd, w->path,
		4253	IN_ATTRIB | IN_DELETE_SELF | IN_MOVE_SELF | IN_MODIFY
		4254	| IN_CREATE | IN_DELETE | IN_MOVED_FROM | IN_MOVED_TO
		4255	| IN_DONT_FOLLOW | IN_MASK_ADD);
3095		4256
3096	if (w->wd >= 0)	4257	if (w->wd >= 0)
3097	{	4258	{
3098	struct statfs sfs;	4259	struct statfs sfs;
3099		4260
…		…
3103		4264
3104	if (!fs_2625)	4265	if (!fs_2625)
3105	w->timer.repeat = w->interval ? w->interval : DEF_STAT_INTERVAL;	4266	w->timer.repeat = w->interval ? w->interval : DEF_STAT_INTERVAL;
3106	else if (!statfs (w->path, &sfs)	4267	else if (!statfs (w->path, &sfs)
3107	&& (sfs.f_type == 0x1373 /* devfs */	4268	&& (sfs.f_type == 0x1373 /* devfs */
		4269	|| sfs.f_type == 0x4006 /* fat */
		4270	|| sfs.f_type == 0x4d44 /* msdos */
3108	|| sfs.f_type == 0xEF53 /* ext2/3 */	4271	|| sfs.f_type == 0xEF53 /* ext2/3 */
		4272	|| sfs.f_type == 0x72b6 /* jffs2 */
		4273	|| sfs.f_type == 0x858458f6 /* ramfs */
		4274	|| sfs.f_type == 0x5346544e /* ntfs */
3109	|| sfs.f_type == 0x3153464a /* jfs */	4275	|| sfs.f_type == 0x3153464a /* jfs */
		4276	|| sfs.f_type == 0x9123683e /* btrfs */
3110	|| sfs.f_type == 0x52654973 /* reiser3 */	4277	|| sfs.f_type == 0x52654973 /* reiser3 */
3111	|| sfs.f_type == 0x01021994 /* tempfs */	4278	|| sfs.f_type == 0x01021994 /* tmpfs */
3112	|| sfs.f_type == 0x58465342 /* xfs */))	4279	|| sfs.f_type == 0x58465342 /* xfs */))
3113	w->timer.repeat = 0.; /* filesystem is local, kernel new enough */	4280	w->timer.repeat = 0.; /* filesystem is local, kernel new enough */
3114	else	4281	else
3115	w->timer.repeat = w->interval ? w->interval : NFS_STAT_INTERVAL; /* remote, use reduced frequency */	4282	w->timer.repeat = w->interval ? w->interval : NFS_STAT_INTERVAL; /* remote, use reduced frequency */
3116	}	4283	}
…		…
3151	if (ev_is_active (&w->timer)) ev_ref (EV_A);	4318	if (ev_is_active (&w->timer)) ev_ref (EV_A);
3152	ev_timer_again (EV_A_ &w->timer);	4319	ev_timer_again (EV_A_ &w->timer);
3153	if (ev_is_active (&w->timer)) ev_unref (EV_A);	4320	if (ev_is_active (&w->timer)) ev_unref (EV_A);
3154	}	4321	}
3155		4322
3156	static void noinline	4323	noinline
		4324	static void
3157	infy_del (EV_P_ ev_stat *w)	4325	infy_del (EV_P_ ev_stat *w)
3158	{	4326	{
3159	int slot;	4327	int slot;
3160	int wd = w->wd;	4328	int wd = w->wd;
3161		4329
…		…
3168		4336
3169	/* remove this watcher, if others are watching it, they will rearm */	4337	/* remove this watcher, if others are watching it, they will rearm */
3170	inotify_rm_watch (fs_fd, wd);	4338	inotify_rm_watch (fs_fd, wd);
3171	}	4339	}
3172		4340
3173	static void noinline	4341	noinline
		4342	static void
3174	infy_wd (EV_P_ int slot, int wd, struct inotify_event *ev)	4343	infy_wd (EV_P_ int slot, int wd, struct inotify_event *ev)
3175	{	4344	{
3176	if (slot < 0)	4345	if (slot < 0)
3177	/* overflow, need to check for all hash slots */	4346	/* overflow, need to check for all hash slots */
3178	for (slot = 0; slot < (EV_INOTIFY_HASHSIZE); ++slot)	4347	for (slot = 0; slot < (EV_INOTIFY_HASHSIZE); ++slot)
…		…
3214	infy_wd (EV_A_ ev->wd, ev->wd, ev);	4383	infy_wd (EV_A_ ev->wd, ev->wd, ev);
3215	ofs += sizeof (struct inotify_event) + ev->len;	4384	ofs += sizeof (struct inotify_event) + ev->len;
3216	}	4385	}
3217	}	4386	}
3218		4387
3219	inline_size void	4388	inline_size ecb_cold
		4389	void
3220	ev_check_2625 (EV_P)	4390	ev_check_2625 (EV_P)
3221	{	4391	{
3222	/* kernels < 2.6.25 are borked	4392	/* kernels < 2.6.25 are borked
3223	* http://www.ussg.indiana.edu/hypermail/linux/kernel/0711.3/1208.html	4393	* http://www.ussg.indiana.edu/hypermail/linux/kernel/0711.3/1208.html
3224	*/	4394	*/
…		…
3229	}	4399	}
3230		4400
3231	inline_size int	4401	inline_size int
3232	infy_newfd (void)	4402	infy_newfd (void)
3233	{	4403	{
3234	#if defined (IN_CLOEXEC) && defined (IN_NONBLOCK)	4404	#if defined IN_CLOEXEC && defined IN_NONBLOCK
3235	int fd = inotify_init1 (IN_CLOEXEC | IN_NONBLOCK);	4405	int fd = inotify_init1 (IN_CLOEXEC | IN_NONBLOCK);
3236	if (fd >= 0)	4406	if (fd >= 0)
3237	return fd;	4407	return fd;
3238	#endif	4408	#endif
3239	return inotify_init ();	4409	return inotify_init ();
…		…
3314	#else	4484	#else
3315	# define EV_LSTAT(p,b) lstat (p, b)	4485	# define EV_LSTAT(p,b) lstat (p, b)
3316	#endif	4486	#endif
3317		4487
3318	void	4488	void
3319	ev_stat_stat (EV_P_ ev_stat *w)	4489	ev_stat_stat (EV_P_ ev_stat *w) EV_THROW
3320	{	4490	{
3321	if (lstat (w->path, &w->attr) < 0)	4491	if (lstat (w->path, &w->attr) < 0)
3322	w->attr.st_nlink = 0;	4492	w->attr.st_nlink = 0;
3323	else if (!w->attr.st_nlink)	4493	else if (!w->attr.st_nlink)
3324	w->attr.st_nlink = 1;	4494	w->attr.st_nlink = 1;
3325	}	4495	}
3326		4496
3327	static void noinline	4497	noinline
		4498	static void
3328	stat_timer_cb (EV_P_ ev_timer *w_, int revents)	4499	stat_timer_cb (EV_P_ ev_timer *w_, int revents)
3329	{	4500	{
3330	ev_stat *w = (ev_stat *)(((char *)w_) - offsetof (ev_stat, timer));	4501	ev_stat *w = (ev_stat *)(((char *)w_) - offsetof (ev_stat, timer));
3331		4502
3332	ev_statdata prev = w->attr;	4503	ev_statdata prev = w->attr;
…		…
3363	ev_feed_event (EV_A_ w, EV_STAT);	4534	ev_feed_event (EV_A_ w, EV_STAT);
3364	}	4535	}
3365	}	4536	}
3366		4537
3367	void	4538	void
3368	ev_stat_start (EV_P_ ev_stat *w)	4539	ev_stat_start (EV_P_ ev_stat *w) EV_THROW
3369	{	4540	{
3370	if (expect_false (ev_is_active (w)))	4541	if (expect_false (ev_is_active (w)))
3371	return;	4542	return;
3372		4543
3373	ev_stat_stat (EV_A_ w);	4544	ev_stat_stat (EV_A_ w);
…		…
3394		4565
3395	EV_FREQUENT_CHECK;	4566	EV_FREQUENT_CHECK;
3396	}	4567	}
3397		4568
3398	void	4569	void
3399	ev_stat_stop (EV_P_ ev_stat *w)	4570	ev_stat_stop (EV_P_ ev_stat *w) EV_THROW
3400	{	4571	{
3401	clear_pending (EV_A_ (W)w);	4572	clear_pending (EV_A_ (W)w);
3402	if (expect_false (!ev_is_active (w)))	4573	if (expect_false (!ev_is_active (w)))
3403	return;	4574	return;
3404		4575
…		…
3420	}	4591	}
3421	#endif	4592	#endif
3422		4593
3423	#if EV_IDLE_ENABLE	4594	#if EV_IDLE_ENABLE
3424	void	4595	void
3425	ev_idle_start (EV_P_ ev_idle *w)	4596	ev_idle_start (EV_P_ ev_idle *w) EV_THROW
3426	{	4597	{
3427	if (expect_false (ev_is_active (w)))	4598	if (expect_false (ev_is_active (w)))
3428	return;	4599	return;
3429		4600
3430	pri_adjust (EV_A_ (W)w);	4601	pri_adjust (EV_A_ (W)w);
…		…
3443		4614
3444	EV_FREQUENT_CHECK;	4615	EV_FREQUENT_CHECK;
3445	}	4616	}
3446		4617
3447	void	4618	void
3448	ev_idle_stop (EV_P_ ev_idle *w)	4619	ev_idle_stop (EV_P_ ev_idle *w) EV_THROW
3449	{	4620	{
3450	clear_pending (EV_A_ (W)w);	4621	clear_pending (EV_A_ (W)w);
3451	if (expect_false (!ev_is_active (w)))	4622	if (expect_false (!ev_is_active (w)))
3452	return;	4623	return;
3453		4624
…		…
3467	}	4638	}
3468	#endif	4639	#endif
3469		4640
3470	#if EV_PREPARE_ENABLE	4641	#if EV_PREPARE_ENABLE
3471	void	4642	void
3472	ev_prepare_start (EV_P_ ev_prepare *w)	4643	ev_prepare_start (EV_P_ ev_prepare *w) EV_THROW
3473	{	4644	{
3474	if (expect_false (ev_is_active (w)))	4645	if (expect_false (ev_is_active (w)))
3475	return;	4646	return;
3476		4647
3477	EV_FREQUENT_CHECK;	4648	EV_FREQUENT_CHECK;
…		…
3482		4653
3483	EV_FREQUENT_CHECK;	4654	EV_FREQUENT_CHECK;
3484	}	4655	}
3485		4656
3486	void	4657	void
3487	ev_prepare_stop (EV_P_ ev_prepare *w)	4658	ev_prepare_stop (EV_P_ ev_prepare *w) EV_THROW
3488	{	4659	{
3489	clear_pending (EV_A_ (W)w);	4660	clear_pending (EV_A_ (W)w);
3490	if (expect_false (!ev_is_active (w)))	4661	if (expect_false (!ev_is_active (w)))
3491	return;	4662	return;
3492		4663
…		…
3505	}	4676	}
3506	#endif	4677	#endif
3507		4678
3508	#if EV_CHECK_ENABLE	4679	#if EV_CHECK_ENABLE
3509	void	4680	void
3510	ev_check_start (EV_P_ ev_check *w)	4681	ev_check_start (EV_P_ ev_check *w) EV_THROW
3511	{	4682	{
3512	if (expect_false (ev_is_active (w)))	4683	if (expect_false (ev_is_active (w)))
3513	return;	4684	return;
3514		4685
3515	EV_FREQUENT_CHECK;	4686	EV_FREQUENT_CHECK;
…		…
3520		4691
3521	EV_FREQUENT_CHECK;	4692	EV_FREQUENT_CHECK;
3522	}	4693	}
3523		4694
3524	void	4695	void
3525	ev_check_stop (EV_P_ ev_check *w)	4696	ev_check_stop (EV_P_ ev_check *w) EV_THROW
3526	{	4697	{
3527	clear_pending (EV_A_ (W)w);	4698	clear_pending (EV_A_ (W)w);
3528	if (expect_false (!ev_is_active (w)))	4699	if (expect_false (!ev_is_active (w)))
3529	return;	4700	return;
3530		4701
…		…
3542	EV_FREQUENT_CHECK;	4713	EV_FREQUENT_CHECK;
3543	}	4714	}
3544	#endif	4715	#endif
3545		4716
3546	#if EV_EMBED_ENABLE	4717	#if EV_EMBED_ENABLE
3547	void noinline	4718	noinline
		4719	void
3548	ev_embed_sweep (EV_P_ ev_embed *w)	4720	ev_embed_sweep (EV_P_ ev_embed *w) EV_THROW
3549	{	4721	{
3550	ev_run (w->other, EVRUN_NOWAIT);	4722	ev_run (w->other, EVRUN_NOWAIT);
3551	}	4723	}
3552		4724
3553	static void	4725	static void
…		…
3601	ev_idle_stop (EV_A_ idle);	4773	ev_idle_stop (EV_A_ idle);
3602	}	4774	}
3603	#endif	4775	#endif
3604		4776
3605	void	4777	void
3606	ev_embed_start (EV_P_ ev_embed *w)	4778	ev_embed_start (EV_P_ ev_embed *w) EV_THROW
3607	{	4779	{
3608	if (expect_false (ev_is_active (w)))	4780	if (expect_false (ev_is_active (w)))
3609	return;	4781	return;
3610		4782
3611	{	4783	{
…		…
3632		4804
3633	EV_FREQUENT_CHECK;	4805	EV_FREQUENT_CHECK;
3634	}	4806	}
3635		4807
3636	void	4808	void
3637	ev_embed_stop (EV_P_ ev_embed *w)	4809	ev_embed_stop (EV_P_ ev_embed *w) EV_THROW
3638	{	4810	{
3639	clear_pending (EV_A_ (W)w);	4811	clear_pending (EV_A_ (W)w);
3640	if (expect_false (!ev_is_active (w)))	4812	if (expect_false (!ev_is_active (w)))
3641	return;	4813	return;
3642		4814
…		…
3652	}	4824	}
3653	#endif	4825	#endif
3654		4826
3655	#if EV_FORK_ENABLE	4827	#if EV_FORK_ENABLE
3656	void	4828	void
3657	ev_fork_start (EV_P_ ev_fork *w)	4829	ev_fork_start (EV_P_ ev_fork *w) EV_THROW
3658	{	4830	{
3659	if (expect_false (ev_is_active (w)))	4831	if (expect_false (ev_is_active (w)))
3660	return;	4832	return;
3661		4833
3662	EV_FREQUENT_CHECK;	4834	EV_FREQUENT_CHECK;
…		…
3667		4839
3668	EV_FREQUENT_CHECK;	4840	EV_FREQUENT_CHECK;
3669	}	4841	}
3670		4842
3671	void	4843	void
3672	ev_fork_stop (EV_P_ ev_fork *w)	4844	ev_fork_stop (EV_P_ ev_fork *w) EV_THROW
3673	{	4845	{
3674	clear_pending (EV_A_ (W)w);	4846	clear_pending (EV_A_ (W)w);
3675	if (expect_false (!ev_is_active (w)))	4847	if (expect_false (!ev_is_active (w)))
3676	return;	4848	return;
3677		4849
…		…
3690	}	4862	}
3691	#endif	4863	#endif
3692		4864
3693	#if EV_CLEANUP_ENABLE	4865	#if EV_CLEANUP_ENABLE
3694	void	4866	void
3695	ev_cleanup_start (EV_P_ ev_cleanup *w)	4867	ev_cleanup_start (EV_P_ ev_cleanup *w) EV_THROW
3696	{	4868	{
3697	if (expect_false (ev_is_active (w)))	4869	if (expect_false (ev_is_active (w)))
3698	return;	4870	return;
3699		4871
3700	EV_FREQUENT_CHECK;	4872	EV_FREQUENT_CHECK;
…		…
3707	ev_unref (EV_A);	4879	ev_unref (EV_A);
3708	EV_FREQUENT_CHECK;	4880	EV_FREQUENT_CHECK;
3709	}	4881	}
3710		4882
3711	void	4883	void
3712	ev_cleanup_stop (EV_P_ ev_cleanup *w)	4884	ev_cleanup_stop (EV_P_ ev_cleanup *w) EV_THROW
3713	{	4885	{
3714	clear_pending (EV_A_ (W)w);	4886	clear_pending (EV_A_ (W)w);
3715	if (expect_false (!ev_is_active (w)))	4887	if (expect_false (!ev_is_active (w)))
3716	return;	4888	return;
3717		4889
…		…
3731	}	4903	}
3732	#endif	4904	#endif
3733		4905
3734	#if EV_ASYNC_ENABLE	4906	#if EV_ASYNC_ENABLE
3735	void	4907	void
3736	ev_async_start (EV_P_ ev_async *w)	4908	ev_async_start (EV_P_ ev_async *w) EV_THROW
3737	{	4909	{
3738	if (expect_false (ev_is_active (w)))	4910	if (expect_false (ev_is_active (w)))
3739	return;	4911	return;
3740		4912
3741	w->sent = 0;	4913	w->sent = 0;
…		…
3750		4922
3751	EV_FREQUENT_CHECK;	4923	EV_FREQUENT_CHECK;
3752	}	4924	}
3753		4925
3754	void	4926	void
3755	ev_async_stop (EV_P_ ev_async *w)	4927	ev_async_stop (EV_P_ ev_async *w) EV_THROW
3756	{	4928	{
3757	clear_pending (EV_A_ (W)w);	4929	clear_pending (EV_A_ (W)w);
3758	if (expect_false (!ev_is_active (w)))	4930	if (expect_false (!ev_is_active (w)))
3759	return;	4931	return;
3760		4932
…		…
3771		4943
3772	EV_FREQUENT_CHECK;	4944	EV_FREQUENT_CHECK;
3773	}	4945	}
3774		4946
3775	void	4947	void
3776	ev_async_send (EV_P_ ev_async *w)	4948	ev_async_send (EV_P_ ev_async *w) EV_THROW
3777	{	4949	{
3778	w->sent = 1;	4950	w->sent = 1;
3779	evpipe_write (EV_A_ &async_pending);	4951	evpipe_write (EV_A_ &async_pending);
3780	}	4952	}
3781	#endif	4953	#endif
…		…
3818		4990
3819	once_cb (EV_A_ once, revents | ev_clear_pending (EV_A_ &once->io));	4991	once_cb (EV_A_ once, revents | ev_clear_pending (EV_A_ &once->io));
3820	}	4992	}
3821		4993
3822	void	4994	void
3823	ev_once (EV_P_ int fd, int events, ev_tstamp timeout, void (*cb)(int revents, void *arg), void *arg)	4995	ev_once (EV_P_ int fd, int events, ev_tstamp timeout, void (*cb)(int revents, void *arg), void *arg) EV_THROW
3824	{	4996	{
3825	struct ev_once *once = (struct ev_once *)ev_malloc (sizeof (struct ev_once));	4997	struct ev_once *once = (struct ev_once *)ev_malloc (sizeof (struct ev_once));
3826		4998
3827	if (expect_false (!once))	4999	if (expect_false (!once))
3828	{	5000	{
…		…
3849	}	5021	}
3850		5022
3851	/*****************************************************************************/	5023	/*****************************************************************************/
3852		5024
3853	#if EV_WALK_ENABLE	5025	#if EV_WALK_ENABLE
		5026	ecb_cold
3854	void	5027	void
3855	ev_walk (EV_P_ int types, void (*cb)(EV_P_ int type, void *w))	5028	ev_walk (EV_P_ int types, void (*cb)(EV_P_ int type, void *w)) EV_THROW
3856	{	5029	{
3857	int i, j;	5030	int i, j;
3858	ev_watcher_list *wl, *wn;	5031	ev_watcher_list *wl, *wn;
3859		5032
3860	if (types & (EV_IO | EV_EMBED))	5033	if (types & (EV_IO | EV_EMBED))
…		…
3903	cb (EV_A_ EV_PERIODIC, ANHE_w (periodics [i]));	5076	cb (EV_A_ EV_PERIODIC, ANHE_w (periodics [i]));
3904	#endif	5077	#endif
3905		5078
3906	#if EV_IDLE_ENABLE	5079	#if EV_IDLE_ENABLE
3907	if (types & EV_IDLE)	5080	if (types & EV_IDLE)
3908	for (j = NUMPRI; i--; )	5081	for (j = NUMPRI; j--; )
3909	for (i = idlecnt [j]; i--; )	5082	for (i = idlecnt [j]; i--; )
3910	cb (EV_A_ EV_IDLE, idles [j][i]);	5083	cb (EV_A_ EV_IDLE, idles [j][i]);
3911	#endif	5084	#endif
3912		5085
3913	#if EV_FORK_ENABLE	5086	#if EV_FORK_ENABLE
…		…
3966		5139
3967	#if EV_MULTIPLICITY	5140	#if EV_MULTIPLICITY
3968	#include "ev_wrap.h"	5141	#include "ev_wrap.h"
3969	#endif	5142	#endif
3970		5143
3971	EV_CPP(})
3972

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