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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 1.473 by root, Tue Sep 9 21:51:35 2014 UTC

1	/*	1	/*
2	* libev event processing core, watcher management	2	* libev event processing core, watcher management
3	*	3	*
4	* Copyright (c) 2007,2008,2009,2010,2011 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 (©) 2009-2014 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 0x00010003
		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__
470	# define expect(expr,value) __builtin_expect ((expr),(value))	547	typedef signed long long int64_t;
471	# define noinline __attribute__ ((noinline))	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
472	#else	562	#else
473	# define expect(expr,value) (expr)	563	#include <inttypes.h>
474	# define noinline	564	#if UINTMAX_MAX > 0xffffffffU
475	# if __STDC_VERSION__ < 199901L && __GNUC__ < 2	565	#define ECB_PTRSIZE 8
476	# define inline	566	#else
		567	#define ECB_PTRSIZE 4
		568	#endif
477	# endif	569	#endif
		570
		571	/* work around x32 idiocy by defining proper macros */
		572	#if __amd64 || __x86_64 || _M_AMD64 || _M_X64
		573	#if _ILP32
		574	#define ECB_AMD64_X32 1
		575	#else
		576	#define ECB_AMD64 1
478	#endif	577	#endif
		578	#endif
479		579
		580	/* many compilers define _GNUC_ to some versions but then only implement
		581	* what their idiot authors think are the "more important" extensions,
		582	* causing enormous grief in return for some better fake benchmark numbers.
		583	* or so.
		584	* we try to detect these and simply assume they are not gcc - if they have
		585	* an issue with that they should have done it right in the first place.
		586	*/
		587	#ifndef ECB_GCC_VERSION
		588	#if !defined __GNUC_MINOR__ || defined __INTEL_COMPILER || defined __SUNPRO_C || defined __SUNPRO_CC || defined __llvm__ || defined __clang__
		589	#define ECB_GCC_VERSION(major,minor) 0
		590	#else
		591	#define ECB_GCC_VERSION(major,minor) (__GNUC__ > (major) || (__GNUC__ == (major) && __GNUC_MINOR__ >= (minor)))
		592	#endif
		593	#endif
		594
		595	#define ECB_CPP (__cplusplus+0)
		596	#define ECB_CPP11 (__cplusplus >= 201103L)
		597
		598	#if ECB_CPP
		599	#define ECB_C 0
		600	#define ECB_STDC_VERSION 0
		601	#else
		602	#define ECB_C 1
		603	#define ECB_STDC_VERSION __STDC_VERSION__
		604	#endif
		605
		606	#define ECB_C99 (ECB_STDC_VERSION >= 199901L)
		607	#define ECB_C11 (ECB_STDC_VERSION >= 201112L)
		608
		609	#if ECB_CPP
		610	#define ECB_EXTERN_C extern "C"
		611	#define ECB_EXTERN_C_BEG ECB_EXTERN_C {
		612	#define ECB_EXTERN_C_END }
		613	#else
		614	#define ECB_EXTERN_C extern
		615	#define ECB_EXTERN_C_BEG
		616	#define ECB_EXTERN_C_END
		617	#endif
		618
		619	/*****************************************************************************/
		620
		621	/* ECB_NO_THREADS - ecb is not used by multiple threads, ever */
		622	/* ECB_NO_SMP - ecb might be used in multiple threads, but only on a single cpu */
		623
		624	#if ECB_NO_THREADS
		625	#define ECB_NO_SMP 1
		626	#endif
		627
		628	#if ECB_NO_SMP
		629	#define ECB_MEMORY_FENCE do { } while (0)
		630	#endif
		631
		632	#ifndef ECB_MEMORY_FENCE
		633	#if ECB_GCC_VERSION(2,5) || defined __INTEL_COMPILER || (__llvm__ && __GNUC__) || __SUNPRO_C >= 0x5110 || __SUNPRO_CC >= 0x5110
		634	#if __i386 || __i386__
		635	#define ECB_MEMORY_FENCE __asm__ __volatile__ ("lock; orb $0, -1(%%esp)" : : : "memory")
		636	#define ECB_MEMORY_FENCE_ACQUIRE __asm__ __volatile__ ("" : : : "memory")
		637	#define ECB_MEMORY_FENCE_RELEASE __asm__ __volatile__ ("")
		638	#elif __amd64 || __amd64__ || __x86_64 || __x86_64__
		639	#define ECB_MEMORY_FENCE __asm__ __volatile__ ("mfence" : : : "memory")
		640	#define ECB_MEMORY_FENCE_ACQUIRE __asm__ __volatile__ ("" : : : "memory")
		641	#define ECB_MEMORY_FENCE_RELEASE __asm__ __volatile__ ("")
		642	#elif __powerpc__ || __ppc__ || __powerpc64__ || __ppc64__
		643	#define ECB_MEMORY_FENCE __asm__ __volatile__ ("sync" : : : "memory")
		644	#elif defined __ARM_ARCH_6__ || defined __ARM_ARCH_6J__ \
		645	|| defined __ARM_ARCH_6K__ || defined __ARM_ARCH_6ZK__
		646	#define ECB_MEMORY_FENCE __asm__ __volatile__ ("mcr p15,0,%0,c7,c10,5" : : "r" (0) : "memory")
		647	#elif defined __ARM_ARCH_7__ || defined __ARM_ARCH_7A__ \
		648	|| defined __ARM_ARCH_7M__ || defined __ARM_ARCH_7R__
		649	#define ECB_MEMORY_FENCE __asm__ __volatile__ ("dmb" : : : "memory")
		650	#elif __aarch64__
		651	#define ECB_MEMORY_FENCE __asm__ __volatile__ ("dmb ish" : : : "memory")
		652	#elif (__sparc || __sparc__) && !__sparcv8
		653	#define ECB_MEMORY_FENCE __asm__ __volatile__ ("membar #LoadStore | #LoadLoad | #StoreStore | #StoreLoad" : : : "memory")
		654	#define ECB_MEMORY_FENCE_ACQUIRE __asm__ __volatile__ ("membar #LoadStore | #LoadLoad" : : : "memory")
		655	#define ECB_MEMORY_FENCE_RELEASE __asm__ __volatile__ ("membar #LoadStore | #StoreStore")
		656	#elif defined __s390__ || defined __s390x__
		657	#define ECB_MEMORY_FENCE __asm__ __volatile__ ("bcr 15,0" : : : "memory")
		658	#elif defined __mips__
		659	/* GNU/Linux emulates sync on mips1 architectures, so we force its use */
		660	/* anybody else who still uses mips1 is supposed to send in their version, with detection code. */
		661	#define ECB_MEMORY_FENCE __asm__ __volatile__ (".set mips2; sync; .set mips0" : : : "memory")
		662	#elif defined __alpha__
		663	#define ECB_MEMORY_FENCE __asm__ __volatile__ ("mb" : : : "memory")
		664	#elif defined __hppa__
		665	#define ECB_MEMORY_FENCE __asm__ __volatile__ ("" : : : "memory")
		666	#define ECB_MEMORY_FENCE_RELEASE __asm__ __volatile__ ("")
		667	#elif defined __ia64__
		668	#define ECB_MEMORY_FENCE __asm__ __volatile__ ("mf" : : : "memory")
		669	#elif defined __m68k__
		670	#define ECB_MEMORY_FENCE __asm__ __volatile__ ("" : : : "memory")
		671	#elif defined __m88k__
		672	#define ECB_MEMORY_FENCE __asm__ __volatile__ ("tb1 0,%%r0,128" : : : "memory")
		673	#elif defined __sh__
		674	#define ECB_MEMORY_FENCE __asm__ __volatile__ ("" : : : "memory")
		675	#endif
		676	#endif
		677	#endif
		678
		679	#ifndef ECB_MEMORY_FENCE
		680	#if ECB_GCC_VERSION(4,7)
		681	/* see comment below (stdatomic.h) about the C11 memory model. */
		682	#define ECB_MEMORY_FENCE __atomic_thread_fence (__ATOMIC_SEQ_CST)
		683	#define ECB_MEMORY_FENCE_ACQUIRE __atomic_thread_fence (__ATOMIC_ACQUIRE)
		684	#define ECB_MEMORY_FENCE_RELEASE __atomic_thread_fence (__ATOMIC_RELEASE)
		685
		686	/* The __has_feature syntax from clang is so misdesigned that we cannot use it
		687	* without risking compile time errors with other compilers. We *could*
		688	* define our own ecb_clang_has_feature, but I just can't be bothered to work
		689	* around this shit time and again.
		690	* #elif defined __clang && __has_feature (cxx_atomic)
		691	* // see comment below (stdatomic.h) about the C11 memory model.
		692	* #define ECB_MEMORY_FENCE __c11_atomic_thread_fence (__ATOMIC_SEQ_CST)
		693	* #define ECB_MEMORY_FENCE_ACQUIRE __c11_atomic_thread_fence (__ATOMIC_ACQUIRE)
		694	* #define ECB_MEMORY_FENCE_RELEASE __c11_atomic_thread_fence (__ATOMIC_RELEASE)
		695	*/
		696
		697	#elif ECB_GCC_VERSION(4,4) || defined __INTEL_COMPILER || defined __clang__
		698	#define ECB_MEMORY_FENCE __sync_synchronize ()
		699	#elif _MSC_VER >= 1500 /* VC++ 2008 */
		700	/* apparently, microsoft broke all the memory barrier stuff in Visual Studio 2008... */
		701	#pragma intrinsic(_ReadBarrier,_WriteBarrier,_ReadWriteBarrier)
		702	#define ECB_MEMORY_FENCE _ReadWriteBarrier (); MemoryBarrier()
		703	#define ECB_MEMORY_FENCE_ACQUIRE _ReadWriteBarrier (); MemoryBarrier() /* according to msdn, _ReadBarrier is not a load fence */
		704	#define ECB_MEMORY_FENCE_RELEASE _WriteBarrier (); MemoryBarrier()
		705	#elif _MSC_VER >= 1400 /* VC++ 2005 */
		706	#pragma intrinsic(_ReadBarrier,_WriteBarrier,_ReadWriteBarrier)
		707	#define ECB_MEMORY_FENCE _ReadWriteBarrier ()
		708	#define ECB_MEMORY_FENCE_ACQUIRE _ReadWriteBarrier () /* according to msdn, _ReadBarrier is not a load fence */
		709	#define ECB_MEMORY_FENCE_RELEASE _WriteBarrier ()
		710	#elif defined _WIN32
		711	#include <WinNT.h>
		712	#define ECB_MEMORY_FENCE MemoryBarrier () /* actually just xchg on x86... scary */
		713	#elif __SUNPRO_C >= 0x5110 || __SUNPRO_CC >= 0x5110
		714	#include <mbarrier.h>
		715	#define ECB_MEMORY_FENCE __machine_rw_barrier ()
		716	#define ECB_MEMORY_FENCE_ACQUIRE __machine_r_barrier ()
		717	#define ECB_MEMORY_FENCE_RELEASE __machine_w_barrier ()
		718	#elif __xlC__
		719	#define ECB_MEMORY_FENCE __sync ()
		720	#endif
		721	#endif
		722
		723	#ifndef ECB_MEMORY_FENCE
		724	#if ECB_C11 && !defined __STDC_NO_ATOMICS__
		725	/* we assume that these memory fences work on all variables/all memory accesses, */
		726	/* not just C11 atomics and atomic accesses */
		727	#include <stdatomic.h>
		728	/* Unfortunately, neither gcc 4.7 nor clang 3.1 generate any instructions for */
		729	/* any fence other than seq_cst, which isn't very efficient for us. */
		730	/* Why that is, we don't know - either the C11 memory model is quite useless */
		731	/* for most usages, or gcc and clang have a bug */
		732	/* I *currently* lean towards the latter, and inefficiently implement */
		733	/* all three of ecb's fences as a seq_cst fence */
		734	/* Update, gcc-4.8 generates mfence for all c++ fences, but nothing */
		735	/* for all __atomic_thread_fence's except seq_cst */
		736	#define ECB_MEMORY_FENCE atomic_thread_fence (memory_order_seq_cst)
		737	#endif
		738	#endif
		739
		740	#ifndef ECB_MEMORY_FENCE
		741	#if !ECB_AVOID_PTHREADS
		742	/*
		743	* if you get undefined symbol references to pthread_mutex_lock,
		744	* or failure to find pthread.h, then you should implement
		745	* the ECB_MEMORY_FENCE operations for your cpu/compiler
		746	* OR provide pthread.h and link against the posix thread library
		747	* of your system.
		748	*/
		749	#include <pthread.h>
		750	#define ECB_NEEDS_PTHREADS 1
		751	#define ECB_MEMORY_FENCE_NEEDS_PTHREADS 1
		752
		753	static pthread_mutex_t ecb_mf_lock = PTHREAD_MUTEX_INITIALIZER;
		754	#define ECB_MEMORY_FENCE do { pthread_mutex_lock (&ecb_mf_lock); pthread_mutex_unlock (&ecb_mf_lock); } while (0)
		755	#endif
		756	#endif
		757
		758	#if !defined ECB_MEMORY_FENCE_ACQUIRE && defined ECB_MEMORY_FENCE
		759	#define ECB_MEMORY_FENCE_ACQUIRE ECB_MEMORY_FENCE
		760	#endif
		761
		762	#if !defined ECB_MEMORY_FENCE_RELEASE && defined ECB_MEMORY_FENCE
		763	#define ECB_MEMORY_FENCE_RELEASE ECB_MEMORY_FENCE
		764	#endif
		765
		766	/*****************************************************************************/
		767
		768	#if __cplusplus
		769	#define ecb_inline static inline
		770	#elif ECB_GCC_VERSION(2,5)
		771	#define ecb_inline static __inline__
		772	#elif ECB_C99
		773	#define ecb_inline static inline
		774	#else
		775	#define ecb_inline static
		776	#endif
		777
		778	#if ECB_GCC_VERSION(3,3)
		779	#define ecb_restrict __restrict__
		780	#elif ECB_C99
		781	#define ecb_restrict restrict
		782	#else
		783	#define ecb_restrict
		784	#endif
		785
		786	typedef int ecb_bool;
		787
		788	#define ECB_CONCAT_(a, b) a ## b
		789	#define ECB_CONCAT(a, b) ECB_CONCAT_(a, b)
		790	#define ECB_STRINGIFY_(a) # a
		791	#define ECB_STRINGIFY(a) ECB_STRINGIFY_(a)
		792
		793	#define ecb_function_ ecb_inline
		794
		795	#if ECB_GCC_VERSION(3,1)
		796	#define ecb_attribute(attrlist) __attribute__(attrlist)
		797	#define ecb_is_constant(expr) __builtin_constant_p (expr)
		798	#define ecb_expect(expr,value) __builtin_expect ((expr),(value))
		799	#define ecb_prefetch(addr,rw,locality) __builtin_prefetch (addr, rw, locality)
		800	#else
		801	#define ecb_attribute(attrlist)
		802
		803	/* possible C11 impl for integral types
		804	typedef struct ecb_is_constant_struct ecb_is_constant_struct;
		805	#define ecb_is_constant(expr) _Generic ((1 ? (struct ecb_is_constant_struct *)0 : (void *)((expr) - (expr)), ecb_is_constant_struct *: 0, default: 1)) */
		806
		807	#define ecb_is_constant(expr) 0
		808	#define ecb_expect(expr,value) (expr)
		809	#define ecb_prefetch(addr,rw,locality)
		810	#endif
		811
		812	/* no emulation for ecb_decltype */
		813	#if ECB_GCC_VERSION(4,5)
		814	#define ecb_decltype(x) __decltype(x)
		815	#elif ECB_GCC_VERSION(3,0)
		816	#define ecb_decltype(x) __typeof(x)
		817	#endif
		818
		819	#if _MSC_VER >= 1300
		820	#define ecb_deprecated __declspec(deprecated)
		821	#else
		822	#define ecb_deprecated ecb_attribute ((__deprecated__))
		823	#endif
		824
		825	#define ecb_noinline ecb_attribute ((__noinline__))
		826	#define ecb_unused ecb_attribute ((__unused__))
		827	#define ecb_const ecb_attribute ((__const__))
		828	#define ecb_pure ecb_attribute ((__pure__))
		829
		830	/* http://msdn.microsoft.com/en-us/library/k6ktzx3s.aspx __declspec(noreturn) */
		831	#if ECB_C11
		832	#define ecb_noreturn _Noreturn
		833	#else
		834	#define ecb_noreturn ecb_attribute ((__noreturn__))
		835	#endif
		836
		837	#if ECB_GCC_VERSION(4,3)
		838	#define ecb_artificial ecb_attribute ((__artificial__))
		839	#define ecb_hot ecb_attribute ((__hot__))
		840	#define ecb_cold ecb_attribute ((__cold__))
		841	#else
		842	#define ecb_artificial
		843	#define ecb_hot
		844	#define ecb_cold
		845	#endif
		846
		847	/* put around conditional expressions if you are very sure that the */
		848	/* expression is mostly true or mostly false. note that these return */
		849	/* booleans, not the expression. */
480	#define expect_false(expr) expect ((expr) != 0, 0)	850	#define ecb_expect_false(expr) ecb_expect (!!(expr), 0)
481	#define expect_true(expr) expect ((expr) != 0, 1)	851	#define ecb_expect_true(expr) ecb_expect (!!(expr), 1)
		852	/* for compatibility to the rest of the world */
		853	#define ecb_likely(expr) ecb_expect_true (expr)
		854	#define ecb_unlikely(expr) ecb_expect_false (expr)
		855
		856	/* count trailing zero bits and count # of one bits */
		857	#if ECB_GCC_VERSION(3,4)
		858	/* we assume int == 32 bit, long == 32 or 64 bit and long long == 64 bit */
		859	#define ecb_ld32(x) (__builtin_clz (x) ^ 31)
		860	#define ecb_ld64(x) (__builtin_clzll (x) ^ 63)
		861	#define ecb_ctz32(x) __builtin_ctz (x)
		862	#define ecb_ctz64(x) __builtin_ctzll (x)
		863	#define ecb_popcount32(x) __builtin_popcount (x)
		864	/* no popcountll */
		865	#else
		866	ecb_function_ int ecb_ctz32 (uint32_t x) ecb_const;
		867	ecb_function_ int
		868	ecb_ctz32 (uint32_t x)
		869	{
		870	int r = 0;
		871
		872	x &= ~x + 1; /* this isolates the lowest bit */
		873
		874	#if ECB_branchless_on_i386
		875	r += !!(x & 0xaaaaaaaa) << 0;
		876	r += !!(x & 0xcccccccc) << 1;
		877	r += !!(x & 0xf0f0f0f0) << 2;
		878	r += !!(x & 0xff00ff00) << 3;
		879	r += !!(x & 0xffff0000) << 4;
		880	#else
		881	if (x & 0xaaaaaaaa) r += 1;
		882	if (x & 0xcccccccc) r += 2;
		883	if (x & 0xf0f0f0f0) r += 4;
		884	if (x & 0xff00ff00) r += 8;
		885	if (x & 0xffff0000) r += 16;
		886	#endif
		887
		888	return r;
		889	}
		890
		891	ecb_function_ int ecb_ctz64 (uint64_t x) ecb_const;
		892	ecb_function_ int
		893	ecb_ctz64 (uint64_t x)
		894	{
		895	int shift = x & 0xffffffffU ? 0 : 32;
		896	return ecb_ctz32 (x >> shift) + shift;
		897	}
		898
		899	ecb_function_ int ecb_popcount32 (uint32_t x) ecb_const;
		900	ecb_function_ int
		901	ecb_popcount32 (uint32_t x)
		902	{
		903	x -= (x >> 1) & 0x55555555;
		904	x = ((x >> 2) & 0x33333333) + (x & 0x33333333);
		905	x = ((x >> 4) + x) & 0x0f0f0f0f;
		906	x *= 0x01010101;
		907
		908	return x >> 24;
		909	}
		910
		911	ecb_function_ int ecb_ld32 (uint32_t x) ecb_const;
		912	ecb_function_ int ecb_ld32 (uint32_t x)
		913	{
		914	int r = 0;
		915
		916	if (x >> 16) { x >>= 16; r += 16; }
		917	if (x >> 8) { x >>= 8; r += 8; }
		918	if (x >> 4) { x >>= 4; r += 4; }
		919	if (x >> 2) { x >>= 2; r += 2; }
		920	if (x >> 1) { r += 1; }
		921
		922	return r;
		923	}
		924
		925	ecb_function_ int ecb_ld64 (uint64_t x) ecb_const;
		926	ecb_function_ int ecb_ld64 (uint64_t x)
		927	{
		928	int r = 0;
		929
		930	if (x >> 32) { x >>= 32; r += 32; }
		931
		932	return r + ecb_ld32 (x);
		933	}
		934	#endif
		935
		936	ecb_function_ ecb_bool ecb_is_pot32 (uint32_t x) ecb_const;
		937	ecb_function_ ecb_bool ecb_is_pot32 (uint32_t x) { return !(x & (x - 1)); }
		938	ecb_function_ ecb_bool ecb_is_pot64 (uint64_t x) ecb_const;
		939	ecb_function_ ecb_bool ecb_is_pot64 (uint64_t x) { return !(x & (x - 1)); }
		940
		941	ecb_function_ uint8_t ecb_bitrev8 (uint8_t x) ecb_const;
		942	ecb_function_ uint8_t ecb_bitrev8 (uint8_t x)
		943	{
		944	return ( (x * 0x0802U & 0x22110U)
		945	| (x * 0x8020U & 0x88440U)) * 0x10101U >> 16;
		946	}
		947
		948	ecb_function_ uint16_t ecb_bitrev16 (uint16_t x) ecb_const;
		949	ecb_function_ uint16_t ecb_bitrev16 (uint16_t x)
		950	{
		951	x = ((x >> 1) & 0x5555) | ((x & 0x5555) << 1);
		952	x = ((x >> 2) & 0x3333) | ((x & 0x3333) << 2);
		953	x = ((x >> 4) & 0x0f0f) | ((x & 0x0f0f) << 4);
		954	x = ( x >> 8 ) | ( x << 8);
		955
		956	return x;
		957	}
		958
		959	ecb_function_ uint32_t ecb_bitrev32 (uint32_t x) ecb_const;
		960	ecb_function_ uint32_t ecb_bitrev32 (uint32_t x)
		961	{
		962	x = ((x >> 1) & 0x55555555) | ((x & 0x55555555) << 1);
		963	x = ((x >> 2) & 0x33333333) | ((x & 0x33333333) << 2);
		964	x = ((x >> 4) & 0x0f0f0f0f) | ((x & 0x0f0f0f0f) << 4);
		965	x = ((x >> 8) & 0x00ff00ff) | ((x & 0x00ff00ff) << 8);
		966	x = ( x >> 16 ) | ( x << 16);
		967
		968	return x;
		969	}
		970
		971	/* popcount64 is only available on 64 bit cpus as gcc builtin */
		972	/* so for this version we are lazy */
		973	ecb_function_ int ecb_popcount64 (uint64_t x) ecb_const;
		974	ecb_function_ int
		975	ecb_popcount64 (uint64_t x)
		976	{
		977	return ecb_popcount32 (x) + ecb_popcount32 (x >> 32);
		978	}
		979
		980	ecb_inline uint8_t ecb_rotl8 (uint8_t x, unsigned int count) ecb_const;
		981	ecb_inline uint8_t ecb_rotr8 (uint8_t x, unsigned int count) ecb_const;
		982	ecb_inline uint16_t ecb_rotl16 (uint16_t x, unsigned int count) ecb_const;
		983	ecb_inline uint16_t ecb_rotr16 (uint16_t x, unsigned int count) ecb_const;
		984	ecb_inline uint32_t ecb_rotl32 (uint32_t x, unsigned int count) ecb_const;
		985	ecb_inline uint32_t ecb_rotr32 (uint32_t x, unsigned int count) ecb_const;
		986	ecb_inline uint64_t ecb_rotl64 (uint64_t x, unsigned int count) ecb_const;
		987	ecb_inline uint64_t ecb_rotr64 (uint64_t x, unsigned int count) ecb_const;
		988
		989	ecb_inline uint8_t ecb_rotl8 (uint8_t x, unsigned int count) { return (x >> ( 8 - count)) | (x << count); }
		990	ecb_inline uint8_t ecb_rotr8 (uint8_t x, unsigned int count) { return (x << ( 8 - count)) | (x >> count); }
		991	ecb_inline uint16_t ecb_rotl16 (uint16_t x, unsigned int count) { return (x >> (16 - count)) | (x << count); }
		992	ecb_inline uint16_t ecb_rotr16 (uint16_t x, unsigned int count) { return (x << (16 - count)) | (x >> count); }
		993	ecb_inline uint32_t ecb_rotl32 (uint32_t x, unsigned int count) { return (x >> (32 - count)) | (x << count); }
		994	ecb_inline uint32_t ecb_rotr32 (uint32_t x, unsigned int count) { return (x << (32 - count)) | (x >> count); }
		995	ecb_inline uint64_t ecb_rotl64 (uint64_t x, unsigned int count) { return (x >> (64 - count)) | (x << count); }
		996	ecb_inline uint64_t ecb_rotr64 (uint64_t x, unsigned int count) { return (x << (64 - count)) | (x >> count); }
		997
		998	#if ECB_GCC_VERSION(4,3)
		999	#define ecb_bswap16(x) (__builtin_bswap32 (x) >> 16)
		1000	#define ecb_bswap32(x) __builtin_bswap32 (x)
		1001	#define ecb_bswap64(x) __builtin_bswap64 (x)
		1002	#else
		1003	ecb_function_ uint16_t ecb_bswap16 (uint16_t x) ecb_const;
		1004	ecb_function_ uint16_t
		1005	ecb_bswap16 (uint16_t x)
		1006	{
		1007	return ecb_rotl16 (x, 8);
		1008	}
		1009
		1010	ecb_function_ uint32_t ecb_bswap32 (uint32_t x) ecb_const;
		1011	ecb_function_ uint32_t
		1012	ecb_bswap32 (uint32_t x)
		1013	{
		1014	return (((uint32_t)ecb_bswap16 (x)) << 16) | ecb_bswap16 (x >> 16);
		1015	}
		1016
		1017	ecb_function_ uint64_t ecb_bswap64 (uint64_t x) ecb_const;
		1018	ecb_function_ uint64_t
		1019	ecb_bswap64 (uint64_t x)
		1020	{
		1021	return (((uint64_t)ecb_bswap32 (x)) << 32) | ecb_bswap32 (x >> 32);
		1022	}
		1023	#endif
		1024
		1025	#if ECB_GCC_VERSION(4,5)
		1026	#define ecb_unreachable() __builtin_unreachable ()
		1027	#else
		1028	/* this seems to work fine, but gcc always emits a warning for it :/ */
		1029	ecb_inline void ecb_unreachable (void) ecb_noreturn;
		1030	ecb_inline void ecb_unreachable (void) { }
		1031	#endif
		1032
		1033	/* try to tell the compiler that some condition is definitely true */
		1034	#define ecb_assume(cond) if (!(cond)) ecb_unreachable (); else 0
		1035
		1036	ecb_inline unsigned char ecb_byteorder_helper (void) ecb_const;
		1037	ecb_inline unsigned char
		1038	ecb_byteorder_helper (void)
		1039	{
		1040	/* the union code still generates code under pressure in gcc, */
		1041	/* but less than using pointers, and always seems to */
		1042	/* successfully return a constant. */
		1043	/* the reason why we have this horrible preprocessor mess */
		1044	/* is to avoid it in all cases, at least on common architectures */
		1045	/* or when using a recent enough gcc version (>= 4.6) */
		1046	#if __i386 || __i386__ || _M_X86 || __amd64 || __amd64__ || _M_X64
		1047	return 0x44;
		1048	#elif __BYTE_ORDER__ && __BYTE_ORDER__ == __ORDER_LITTLE_ENDIAN__
		1049	return 0x44;
		1050	#elif __BYTE_ORDER__ && __BYTE_ORDER__ == __ORDER_BIG_ENDIAN__
		1051	return 0x11;
		1052	#else
		1053	union
		1054	{
		1055	uint32_t i;
		1056	uint8_t c;
		1057	} u = { 0x11223344 };
		1058	return u.c;
		1059	#endif
		1060	}
		1061
		1062	ecb_inline ecb_bool ecb_big_endian (void) ecb_const;
		1063	ecb_inline ecb_bool ecb_big_endian (void) { return ecb_byteorder_helper () == 0x11; }
		1064	ecb_inline ecb_bool ecb_little_endian (void) ecb_const;
		1065	ecb_inline ecb_bool ecb_little_endian (void) { return ecb_byteorder_helper () == 0x44; }
		1066
		1067	#if ECB_GCC_VERSION(3,0) || ECB_C99
		1068	#define ecb_mod(m,n) ((m) % (n) + ((m) % (n) < 0 ? (n) : 0))
		1069	#else
		1070	#define ecb_mod(m,n) ((m) < 0 ? ((n) - 1 - ((-1 - (m)) % (n))) : ((m) % (n)))
		1071	#endif
		1072
		1073	#if __cplusplus
		1074	template<typename T>
		1075	static inline T ecb_div_rd (T val, T div)
		1076	{
		1077	return val < 0 ? - ((-val + div - 1) / div) : (val ) / div;
		1078	}
		1079	template<typename T>
		1080	static inline T ecb_div_ru (T val, T div)
		1081	{
		1082	return val < 0 ? - ((-val ) / div) : (val + div - 1) / div;
		1083	}
		1084	#else
		1085	#define ecb_div_rd(val,div) ((val) < 0 ? - ((-(val) + (div) - 1) / (div)) : ((val) ) / (div))
		1086	#define ecb_div_ru(val,div) ((val) < 0 ? - ((-(val) ) / (div)) : ((val) + (div) - 1) / (div))
		1087	#endif
		1088
		1089	#if ecb_cplusplus_does_not_suck
		1090	/* does not work for local types (http://www.open-std.org/jtc1/sc22/wg21/docs/papers/2008/n2657.htm) */
		1091	template<typename T, int N>
		1092	static inline int ecb_array_length (const T (&arr)[N])
		1093	{
		1094	return N;
		1095	}
		1096	#else
		1097	#define ecb_array_length(name) (sizeof (name) / sizeof (name [0]))
		1098	#endif
		1099
		1100	/*******************************************************************************/
		1101	/* floating point stuff, can be disabled by defining ECB_NO_LIBM */
		1102
		1103	/* basically, everything uses "ieee pure-endian" floating point numbers */
		1104	/* the only noteworthy exception is ancient armle, which uses order 43218765 */
		1105	#if 0 \
		1106	|| __i386 || __i386__ \
		1107	|| __amd64 || __amd64__ || __x86_64 || __x86_64__ \
		1108	|| __powerpc__ || __ppc__ || __powerpc64__ || __ppc64__ \
		1109	|| defined __s390__ || defined __s390x__ \
		1110	|| defined __mips__ \
		1111	|| defined __alpha__ \
		1112	|| defined __hppa__ \
		1113	|| defined __ia64__ \
		1114	|| defined __m68k__ \
		1115	|| defined __m88k__ \
		1116	|| defined __sh__ \
		1117	|| defined _M_IX86 || defined _M_AMD64 || defined _M_IA64 \
		1118	|| (defined __arm__ && (defined __ARM_EABI__ || defined __EABI__ || defined __VFP_FP__ || defined _WIN32_WCE || defined __ANDROID__)) \
		1119	|| defined __aarch64__
		1120	#define ECB_STDFP 1
		1121	#include <string.h> /* for memcpy */
		1122	#else
		1123	#define ECB_STDFP 0
		1124	#endif
		1125
		1126	#ifndef ECB_NO_LIBM
		1127
		1128	#include <math.h> /* for frexp*, ldexp*, INFINITY, NAN */
		1129
		1130	/* only the oldest of old doesn't have this one. solaris. */
		1131	#ifdef INFINITY
		1132	#define ECB_INFINITY INFINITY
		1133	#else
		1134	#define ECB_INFINITY HUGE_VAL
		1135	#endif
		1136
		1137	#ifdef NAN
		1138	#define ECB_NAN NAN
		1139	#else
		1140	#define ECB_NAN ECB_INFINITY
		1141	#endif
		1142
		1143	/* converts an ieee half/binary16 to a float */
		1144	ecb_function_ float ecb_binary16_to_float (uint16_t x) ecb_const;
		1145	ecb_function_ float
		1146	ecb_binary16_to_float (uint16_t x)
		1147	{
		1148	int e = (x >> 10) & 0x1f;
		1149	int m = x & 0x3ff;
		1150	float r;
		1151
		1152	if (!e ) r = ldexpf (m , -24);
		1153	else if (e != 31) r = ldexpf (m + 0x400, e - 25);
		1154	else if (m ) r = ECB_NAN;
		1155	else r = ECB_INFINITY;
		1156
		1157	return x & 0x8000 ? -r : r;
		1158	}
		1159
		1160	/* convert a float to ieee single/binary32 */
		1161	ecb_function_ uint32_t ecb_float_to_binary32 (float x) ecb_const;
		1162	ecb_function_ uint32_t
		1163	ecb_float_to_binary32 (float x)
		1164	{
		1165	uint32_t r;
		1166
		1167	#if ECB_STDFP
		1168	memcpy (&r, &x, 4);
		1169	#else
		1170	/* slow emulation, works for anything but -0 */
		1171	uint32_t m;
		1172	int e;
		1173
		1174	if (x == 0e0f ) return 0x00000000U;
		1175	if (x > +3.40282346638528860e+38f) return 0x7f800000U;
		1176	if (x < -3.40282346638528860e+38f) return 0xff800000U;
		1177	if (x != x ) return 0x7fbfffffU;
		1178
		1179	m = frexpf (x, &e) * 0x1000000U;
		1180
		1181	r = m & 0x80000000U;
		1182
		1183	if (r)
		1184	m = -m;
		1185
		1186	if (e <= -126)
		1187	{
		1188	m &= 0xffffffU;
		1189	m >>= (-125 - e);
		1190	e = -126;
		1191	}
		1192
		1193	r |= (e + 126) << 23;
		1194	r |= m & 0x7fffffU;
		1195	#endif
		1196
		1197	return r;
		1198	}
		1199
		1200	/* converts an ieee single/binary32 to a float */
		1201	ecb_function_ float ecb_binary32_to_float (uint32_t x) ecb_const;
		1202	ecb_function_ float
		1203	ecb_binary32_to_float (uint32_t x)
		1204	{
		1205	float r;
		1206
		1207	#if ECB_STDFP
		1208	memcpy (&r, &x, 4);
		1209	#else
		1210	/* emulation, only works for normals and subnormals and +0 */
		1211	int neg = x >> 31;
		1212	int e = (x >> 23) & 0xffU;
		1213
		1214	x &= 0x7fffffU;
		1215
		1216	if (e)
		1217	x |= 0x800000U;
		1218	else
		1219	e = 1;
		1220
		1221	/* we distrust ldexpf a bit and do the 2**-24 scaling by an extra multiply */
		1222	r = ldexpf (x * (0.5f / 0x800000U), e - 126);
		1223
		1224	r = neg ? -r : r;
		1225	#endif
		1226
		1227	return r;
		1228	}
		1229
		1230	/* convert a double to ieee double/binary64 */
		1231	ecb_function_ uint64_t ecb_double_to_binary64 (double x) ecb_const;
		1232	ecb_function_ uint64_t
		1233	ecb_double_to_binary64 (double x)
		1234	{
		1235	uint64_t r;
		1236
		1237	#if ECB_STDFP
		1238	memcpy (&r, &x, 8);
		1239	#else
		1240	/* slow emulation, works for anything but -0 */
		1241	uint64_t m;
		1242	int e;
		1243
		1244	if (x == 0e0 ) return 0x0000000000000000U;
		1245	if (x > +1.79769313486231470e+308) return 0x7ff0000000000000U;
		1246	if (x < -1.79769313486231470e+308) return 0xfff0000000000000U;
		1247	if (x != x ) return 0X7ff7ffffffffffffU;
		1248
		1249	m = frexp (x, &e) * 0x20000000000000U;
		1250
		1251	r = m & 0x8000000000000000;;
		1252
		1253	if (r)
		1254	m = -m;
		1255
		1256	if (e <= -1022)
		1257	{
		1258	m &= 0x1fffffffffffffU;
		1259	m >>= (-1021 - e);
		1260	e = -1022;
		1261	}
		1262
		1263	r |= ((uint64_t)(e + 1022)) << 52;
		1264	r |= m & 0xfffffffffffffU;
		1265	#endif
		1266
		1267	return r;
		1268	}
		1269
		1270	/* converts an ieee double/binary64 to a double */
		1271	ecb_function_ double ecb_binary64_to_double (uint64_t x) ecb_const;
		1272	ecb_function_ double
		1273	ecb_binary64_to_double (uint64_t x)
		1274	{
		1275	double r;
		1276
		1277	#if ECB_STDFP
		1278	memcpy (&r, &x, 8);
		1279	#else
		1280	/* emulation, only works for normals and subnormals and +0 */
		1281	int neg = x >> 63;
		1282	int e = (x >> 52) & 0x7ffU;
		1283
		1284	x &= 0xfffffffffffffU;
		1285
		1286	if (e)
		1287	x |= 0x10000000000000U;
		1288	else
		1289	e = 1;
		1290
		1291	/* we distrust ldexp a bit and do the 2**-53 scaling by an extra multiply */
		1292	r = ldexp (x * (0.5 / 0x10000000000000U), e - 1022);
		1293
		1294	r = neg ? -r : r;
		1295	#endif
		1296
		1297	return r;
		1298	}
		1299
		1300	#endif
		1301
		1302	#endif
		1303
		1304	/* ECB.H END */
		1305
		1306	#if ECB_MEMORY_FENCE_NEEDS_PTHREADS
		1307	/* if your architecture doesn't need memory fences, e.g. because it is
		1308	* single-cpu/core, or if you use libev in a project that doesn't use libev
		1309	* from multiple threads, then you can define ECB_AVOID_PTHREADS when compiling
		1310	* libev, in which cases the memory fences become nops.
		1311	* alternatively, you can remove this #error and link against libpthread,
		1312	* which will then provide the memory fences.
		1313	*/
		1314	# error "memory fences not defined for your architecture, please report"
		1315	#endif
		1316
		1317	#ifndef ECB_MEMORY_FENCE
		1318	# define ECB_MEMORY_FENCE do { } while (0)
		1319	# define ECB_MEMORY_FENCE_ACQUIRE ECB_MEMORY_FENCE
		1320	# define ECB_MEMORY_FENCE_RELEASE ECB_MEMORY_FENCE
		1321	#endif
		1322
		1323	#define expect_false(cond) ecb_expect_false (cond)
		1324	#define expect_true(cond) ecb_expect_true (cond)
		1325	#define noinline ecb_noinline
		1326
482	#define inline_size static inline	1327	#define inline_size ecb_inline
483		1328
484	#if EV_FEATURE_CODE	1329	#if EV_FEATURE_CODE
485	# define inline_speed static inline	1330	# define inline_speed ecb_inline
486	#else	1331	#else
487	# define inline_speed static noinline	1332	# define inline_speed static noinline
488	#endif	1333	#endif
489		1334
490	#define NUMPRI (EV_MAXPRI - EV_MINPRI + 1)	1335	#define NUMPRI (EV_MAXPRI - EV_MINPRI + 1)
…		…
581		1426
582	#ifdef __linux	1427	#ifdef __linux
583	# include <sys/utsname.h>	1428	# include <sys/utsname.h>
584	#endif	1429	#endif
585		1430
586	static unsigned int noinline	1431	static unsigned int noinline ecb_cold
587	ev_linux_version (void)	1432	ev_linux_version (void)
588	{	1433	{
589	#ifdef __linux	1434	#ifdef __linux
590	unsigned int v = 0;	1435	unsigned int v = 0;
591	struct utsname buf;	1436	struct utsname buf;
…		…
620	}	1465	}
621		1466
622	/*****************************************************************************/	1467	/*****************************************************************************/
623		1468
624	#if EV_AVOID_STDIO	1469	#if EV_AVOID_STDIO
625	static void noinline	1470	static void noinline ecb_cold
626	ev_printerr (const char *msg)	1471	ev_printerr (const char *msg)
627	{	1472	{
628	write (STDERR_FILENO, msg, strlen (msg));	1473	write (STDERR_FILENO, msg, strlen (msg));
629	}	1474	}
630	#endif	1475	#endif
631		1476
632	static void (*syserr_cb)(const char *msg);	1477	static void (*syserr_cb)(const char *msg) EV_THROW;
633		1478
634	void	1479	void ecb_cold
635	ev_set_syserr_cb (void (*cb)(const char *msg))	1480	ev_set_syserr_cb (void (*cb)(const char *msg) EV_THROW) EV_THROW
636	{	1481	{
637	syserr_cb = cb;	1482	syserr_cb = cb;
638	}	1483	}
639		1484
640	static void noinline	1485	static void noinline ecb_cold
641	ev_syserr (const char *msg)	1486	ev_syserr (const char *msg)
642	{	1487	{
643	if (!msg)	1488	if (!msg)
644	msg = "(libev) system error";	1489	msg = "(libev) system error";
645		1490
…		…
658	abort ();	1503	abort ();
659	}	1504	}
660	}	1505	}
661		1506
662	static void *	1507	static void *
663	ev_realloc_emul (void *ptr, long size)	1508	ev_realloc_emul (void *ptr, long size) EV_THROW
664	{	1509	{
665	#if __GLIBC__
666	return realloc (ptr, size);
667	#else
668	/* some systems, notably openbsd and darwin, fail to properly	1510	/* some systems, notably openbsd and darwin, fail to properly
669	* implement realloc (x, 0) (as required by both ansi c-89 and	1511	* implement realloc (x, 0) (as required by both ansi c-89 and
670	* the single unix specification, so work around them here.	1512	* the single unix specification, so work around them here.
		1513	* recently, also (at least) fedora and debian started breaking it,
		1514	* despite documenting it otherwise.
671	*/	1515	*/
672		1516
673	if (size)	1517	if (size)
674	return realloc (ptr, size);	1518	return realloc (ptr, size);
675		1519
676	free (ptr);	1520	free (ptr);
677	return 0;	1521	return 0;
678	#endif
679	}	1522	}
680		1523
681	static void *(*alloc)(void *ptr, long size) = ev_realloc_emul;	1524	static void *(*alloc)(void *ptr, long size) EV_THROW = ev_realloc_emul;
682		1525
683	void	1526	void ecb_cold
684	ev_set_allocator (void *(*cb)(void *ptr, long size))	1527	ev_set_allocator (void *(*cb)(void *ptr, long size) EV_THROW) EV_THROW
685	{	1528	{
686	alloc = cb;	1529	alloc = cb;
687	}	1530	}
688		1531
689	inline_speed void *	1532	inline_speed void *
…		…
777	#undef VAR	1620	#undef VAR
778	};	1621	};
779	#include "ev_wrap.h"	1622	#include "ev_wrap.h"
780		1623
781	static struct ev_loop default_loop_struct;	1624	static struct ev_loop default_loop_struct;
782	struct ev_loop *ev_default_loop_ptr;	1625	EV_API_DECL struct ev_loop *ev_default_loop_ptr = 0; /* needs to be initialised to make it a definition despite extern */
783		1626
784	#else	1627	#else
785		1628
786	ev_tstamp ev_rt_now;	1629	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;	1630	#define VAR(name,decl) static decl;
788	#include "ev_vars.h"	1631	#include "ev_vars.h"
789	#undef VAR	1632	#undef VAR
790		1633
791	static int ev_default_loop_ptr;	1634	static int ev_default_loop_ptr;
…		…
806		1649
807	/*****************************************************************************/	1650	/*****************************************************************************/
808		1651
809	#ifndef EV_HAVE_EV_TIME	1652	#ifndef EV_HAVE_EV_TIME
810	ev_tstamp	1653	ev_tstamp
811	ev_time (void)	1654	ev_time (void) EV_THROW
812	{	1655	{
813	#if EV_USE_REALTIME	1656	#if EV_USE_REALTIME
814	if (expect_true (have_realtime))	1657	if (expect_true (have_realtime))
815	{	1658	{
816	struct timespec ts;	1659	struct timespec ts;
…		…
840	return ev_time ();	1683	return ev_time ();
841	}	1684	}
842		1685
843	#if EV_MULTIPLICITY	1686	#if EV_MULTIPLICITY
844	ev_tstamp	1687	ev_tstamp
845	ev_now (EV_P)	1688	ev_now (EV_P) EV_THROW
846	{	1689	{
847	return ev_rt_now;	1690	return ev_rt_now;
848	}	1691	}
849	#endif	1692	#endif
850		1693
851	void	1694	void
852	ev_sleep (ev_tstamp delay)	1695	ev_sleep (ev_tstamp delay) EV_THROW
853	{	1696	{
854	if (delay > 0.)	1697	if (delay > 0.)
855	{	1698	{
856	#if EV_USE_NANOSLEEP	1699	#if EV_USE_NANOSLEEP
857	struct timespec ts;	1700	struct timespec ts;
858		1701
859	EV_TS_SET (ts, delay);	1702	EV_TS_SET (ts, delay);
860	nanosleep (&ts, 0);	1703	nanosleep (&ts, 0);
861	#elif defined(_WIN32)	1704	#elif defined _WIN32
862	Sleep ((unsigned long)(delay * 1e3));	1705	Sleep ((unsigned long)(delay * 1e3));
863	#else	1706	#else
864	struct timeval tv;	1707	struct timeval tv;
865		1708
866	/* here we rely on sys/time.h + sys/types.h + unistd.h providing select */	1709	/* here we rely on sys/time.h + sys/types.h + unistd.h providing select */
…		…
870	select (0, 0, 0, 0, &tv);	1713	select (0, 0, 0, 0, &tv);
871	#endif	1714	#endif
872	}	1715	}
873	}	1716	}
874		1717
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	/*****************************************************************************/	1718	/*****************************************************************************/
884		1719
885	#define MALLOC_ROUND 4096 /* prefer to allocate in chunks of this size, must be 2**n and >> 4 longs */	1720	#define MALLOC_ROUND 4096 /* prefer to allocate in chunks of this size, must be 2**n and >> 4 longs */
886		1721
887	/* find a suitable new size for the given array, */	1722	/* find a suitable new size for the given array, */
…		…
893		1728
894	do	1729	do
895	ncur <<= 1;	1730	ncur <<= 1;
896	while (cnt > ncur);	1731	while (cnt > ncur);
897		1732
898	/* if size is large, round to MALLOC_ROUND - 4 * longs to accomodate malloc overhead */	1733	/* if size is large, round to MALLOC_ROUND - 4 * longs to accommodate malloc overhead */
899	if (elem * ncur > MALLOC_ROUND - sizeof (void *) * 4)	1734	if (elem * ncur > MALLOC_ROUND - sizeof (void *) * 4)
900	{	1735	{
901	ncur *= elem;	1736	ncur *= elem;
902	ncur = (ncur + elem + (MALLOC_ROUND - 1) + sizeof (void *) * 4) & ~(MALLOC_ROUND - 1);	1737	ncur = (ncur + elem + (MALLOC_ROUND - 1) + sizeof (void *) * 4) & ~(MALLOC_ROUND - 1);
903	ncur = ncur - sizeof (void *) * 4;	1738	ncur = ncur - sizeof (void *) * 4;
…		…
905	}	1740	}
906		1741
907	return ncur;	1742	return ncur;
908	}	1743	}
909		1744
910	static noinline void *	1745	static void * noinline ecb_cold
911	array_realloc (int elem, void *base, int *cur, int cnt)	1746	array_realloc (int elem, void *base, int *cur, int cnt)
912	{	1747	{
913	*cur = array_nextsize (elem, *cur, cnt);	1748	*cur = array_nextsize (elem, *cur, cnt);
914	return ev_realloc (base, elem * *cur);	1749	return ev_realloc (base, elem * *cur);
915	}	1750	}
…		…
918	memset ((void *)(base), 0, sizeof (*(base)) * (count))	1753	memset ((void *)(base), 0, sizeof (*(base)) * (count))
919		1754
920	#define array_needsize(type,base,cur,cnt,init) \	1755	#define array_needsize(type,base,cur,cnt,init) \
921	if (expect_false ((cnt) > (cur))) \	1756	if (expect_false ((cnt) > (cur))) \
922	{ \	1757	{ \
923	int ocur_ = (cur); \	1758	int ecb_unused ocur_ = (cur); \
924	(base) = (type *)array_realloc \	1759	(base) = (type *)array_realloc \
925	(sizeof (type), (base), &(cur), (cnt)); \	1760	(sizeof (type), (base), &(cur), (cnt)); \
926	init ((base) + (ocur_), (cur) - ocur_); \	1761	init ((base) + (ocur_), (cur) - ocur_); \
927	}	1762	}
928		1763
…		…
946	pendingcb (EV_P_ ev_prepare *w, int revents)	1781	pendingcb (EV_P_ ev_prepare *w, int revents)
947	{	1782	{
948	}	1783	}
949		1784
950	void noinline	1785	void noinline
951	ev_feed_event (EV_P_ void *w, int revents)	1786	ev_feed_event (EV_P_ void *w, int revents) EV_THROW
952	{	1787	{
953	W w_ = (W)w;	1788	W w_ = (W)w;
954	int pri = ABSPRI (w_);	1789	int pri = ABSPRI (w_);
955		1790
956	if (expect_false (w_->pending))	1791	if (expect_false (w_->pending))
…		…
960	w_->pending = ++pendingcnt [pri];	1795	w_->pending = ++pendingcnt [pri];
961	array_needsize (ANPENDING, pendings [pri], pendingmax [pri], w_->pending, EMPTY2);	1796	array_needsize (ANPENDING, pendings [pri], pendingmax [pri], w_->pending, EMPTY2);
962	pendings [pri][w_->pending - 1].w = w_;	1797	pendings [pri][w_->pending - 1].w = w_;
963	pendings [pri][w_->pending - 1].events = revents;	1798	pendings [pri][w_->pending - 1].events = revents;
964	}	1799	}
		1800
		1801	pendingpri = NUMPRI - 1;
965	}	1802	}
966		1803
967	inline_speed void	1804	inline_speed void
968	feed_reverse (EV_P_ W w)	1805	feed_reverse (EV_P_ W w)
969	{	1806	{
…		…
1015	if (expect_true (!anfd->reify))	1852	if (expect_true (!anfd->reify))
1016	fd_event_nocheck (EV_A_ fd, revents);	1853	fd_event_nocheck (EV_A_ fd, revents);
1017	}	1854	}
1018		1855
1019	void	1856	void
1020	ev_feed_fd_event (EV_P_ int fd, int revents)	1857	ev_feed_fd_event (EV_P_ int fd, int revents) EV_THROW
1021	{	1858	{
1022	if (fd >= 0 && fd < anfdmax)	1859	if (fd >= 0 && fd < anfdmax)
1023	fd_event_nocheck (EV_A_ fd, revents);	1860	fd_event_nocheck (EV_A_ fd, revents);
1024	}	1861	}
1025		1862
…		…
1098	fdchanges [fdchangecnt - 1] = fd;	1935	fdchanges [fdchangecnt - 1] = fd;
1099	}	1936	}
1100	}	1937	}
1101		1938
1102	/* the given fd is invalid/unusable, so make sure it doesn't hurt us anymore */	1939	/* the given fd is invalid/unusable, so make sure it doesn't hurt us anymore */
1103	inline_speed void	1940	inline_speed void ecb_cold
1104	fd_kill (EV_P_ int fd)	1941	fd_kill (EV_P_ int fd)
1105	{	1942	{
1106	ev_io *w;	1943	ev_io *w;
1107		1944
1108	while ((w = (ev_io *)anfds [fd].head))	1945	while ((w = (ev_io *)anfds [fd].head))
…		…
1111	ev_feed_event (EV_A_ (W)w, EV_ERROR | EV_READ | EV_WRITE);	1948	ev_feed_event (EV_A_ (W)w, EV_ERROR | EV_READ | EV_WRITE);
1112	}	1949	}
1113	}	1950	}
1114		1951
1115	/* check whether the given fd is actually valid, for error recovery */	1952	/* check whether the given fd is actually valid, for error recovery */
1116	inline_size int	1953	inline_size int ecb_cold
1117	fd_valid (int fd)	1954	fd_valid (int fd)
1118	{	1955	{
1119	#ifdef _WIN32	1956	#ifdef _WIN32
1120	return EV_FD_TO_WIN32_HANDLE (fd) != -1;	1957	return EV_FD_TO_WIN32_HANDLE (fd) != -1;
1121	#else	1958	#else
1122	return fcntl (fd, F_GETFD) != -1;	1959	return fcntl (fd, F_GETFD) != -1;
1123	#endif	1960	#endif
1124	}	1961	}
1125		1962
1126	/* called on EBADF to verify fds */	1963	/* called on EBADF to verify fds */
1127	static void noinline	1964	static void noinline ecb_cold
1128	fd_ebadf (EV_P)	1965	fd_ebadf (EV_P)
1129	{	1966	{
1130	int fd;	1967	int fd;
1131		1968
1132	for (fd = 0; fd < anfdmax; ++fd)	1969	for (fd = 0; fd < anfdmax; ++fd)
…		…
1134	if (!fd_valid (fd) && errno == EBADF)	1971	if (!fd_valid (fd) && errno == EBADF)
1135	fd_kill (EV_A_ fd);	1972	fd_kill (EV_A_ fd);
1136	}	1973	}
1137		1974
1138	/* called on ENOMEM in select/poll to kill some fds and retry */	1975	/* called on ENOMEM in select/poll to kill some fds and retry */
1139	static void noinline	1976	static void noinline ecb_cold
1140	fd_enomem (EV_P)	1977	fd_enomem (EV_P)
1141	{	1978	{
1142	int fd;	1979	int fd;
1143		1980
1144	for (fd = anfdmax; fd--; )	1981	for (fd = anfdmax; fd--; )
…		…
1339		2176
1340	/*****************************************************************************/	2177	/*****************************************************************************/
1341		2178
1342	#if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE	2179	#if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE
1343		2180
1344	static void noinline	2181	static void noinline ecb_cold
1345	evpipe_init (EV_P)	2182	evpipe_init (EV_P)
1346	{	2183	{
1347	if (!ev_is_active (&pipe_w))	2184	if (!ev_is_active (&pipe_w))
1348	{	2185	{
		2186	int fds [2];
		2187
1349	# if EV_USE_EVENTFD	2188	# if EV_USE_EVENTFD
		2189	fds [0] = -1;
1350	evfd = eventfd (0, EFD_NONBLOCK | EFD_CLOEXEC);	2190	fds [1] = eventfd (0, EFD_NONBLOCK | EFD_CLOEXEC);
1351	if (evfd < 0 && errno == EINVAL)	2191	if (fds [1] < 0 && errno == EINVAL)
1352	evfd = eventfd (0, 0);	2192	fds [1] = eventfd (0, 0);
1353		2193
1354	if (evfd >= 0)	2194	if (fds [1] < 0)
		2195	# endif
1355	{	2196	{
		2197	while (pipe (fds))
		2198	ev_syserr ("(libev) error creating signal/async pipe");
		2199
		2200	fd_intern (fds [0]);
		2201	}
		2202
1356	evpipe [0] = -1;	2203	evpipe [0] = fds [0];
1357	fd_intern (evfd); /* doing it twice doesn't hurt */	2204
1358	ev_io_set (&pipe_w, evfd, EV_READ);	2205	if (evpipe [1] < 0)
		2206	evpipe [1] = fds [1]; /* first call, set write fd */
		2207	else
		2208	{
		2209	/* on subsequent calls, do not change evpipe [1] */
		2210	/* so that evpipe_write can always rely on its value. */
		2211	/* this branch does not do anything sensible on windows, */
		2212	/* so must not be executed on windows */
		2213
		2214	dup2 (fds [1], evpipe [1]);
		2215	close (fds [1]);
		2216	}
		2217
		2218	fd_intern (evpipe [1]);
		2219
		2220	ev_io_set (&pipe_w, evpipe [0] < 0 ? evpipe [1] : evpipe [0], EV_READ);
		2221	ev_io_start (EV_A_ &pipe_w);
		2222	ev_unref (EV_A); /* watcher should not keep loop alive */
		2223	}
		2224	}
		2225
		2226	inline_speed void
		2227	evpipe_write (EV_P_ EV_ATOMIC_T *flag)
		2228	{
		2229	ECB_MEMORY_FENCE; /* push out the write before this function was called, acquire flag */
		2230
		2231	if (expect_true (*flag))
		2232	return;
		2233
		2234	*flag = 1;
		2235	ECB_MEMORY_FENCE_RELEASE; /* make sure flag is visible before the wakeup */
		2236
		2237	pipe_write_skipped = 1;
		2238
		2239	ECB_MEMORY_FENCE; /* make sure pipe_write_skipped is visible before we check pipe_write_wanted */
		2240
		2241	if (pipe_write_wanted)
		2242	{
		2243	int old_errno;
		2244
		2245	pipe_write_skipped = 0;
		2246	ECB_MEMORY_FENCE_RELEASE;
		2247
		2248	old_errno = errno; /* save errno because write will clobber it */
		2249
		2250	#if EV_USE_EVENTFD
		2251	if (evpipe [0] < 0)
		2252	{
		2253	uint64_t counter = 1;
		2254	write (evpipe [1], &counter, sizeof (uint64_t));
1359	}	2255	}
1360	else	2256	else
1361	# endif	2257	#endif
1362	{	2258	{
1363	while (pipe (evpipe))	2259	#ifdef _WIN32
1364	ev_syserr ("(libev) error creating signal/async pipe");	2260	WSABUF buf;
1365		2261	DWORD sent;
1366	fd_intern (evpipe [0]);	2262	buf.buf = &buf;
1367	fd_intern (evpipe [1]);	2263	buf.len = 1;
1368	ev_io_set (&pipe_w, evpipe [0], EV_READ);	2264	WSASend (EV_FD_TO_WIN32_HANDLE (evpipe [1]), &buf, 1, &sent, 0, 0, 0);
		2265	#else
		2266	write (evpipe [1], &(evpipe [1]), 1);
		2267	#endif
1369	}	2268	}
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		2269
1401	errno = old_errno;	2270	errno = old_errno;
1402	}	2271	}
1403	}	2272	}
1404		2273
…		…
1407	static void	2276	static void
1408	pipecb (EV_P_ ev_io *iow, int revents)	2277	pipecb (EV_P_ ev_io *iow, int revents)
1409	{	2278	{
1410	int i;	2279	int i;
1411		2280
		2281	if (revents & EV_READ)
		2282	{
1412	#if EV_USE_EVENTFD	2283	#if EV_USE_EVENTFD
1413	if (evfd >= 0)	2284	if (evpipe [0] < 0)
1414	{	2285	{
1415	uint64_t counter;	2286	uint64_t counter;
1416	read (evfd, &counter, sizeof (uint64_t));	2287	read (evpipe [1], &counter, sizeof (uint64_t));
1417	}	2288	}
1418	else	2289	else
1419	#endif	2290	#endif
1420	{	2291	{
1421	char dummy;	2292	char dummy[4];
1422	/* see discussion in evpipe_write when you think this read should be recv in win32 */	2293	#ifdef _WIN32
		2294	WSABUF buf;
		2295	DWORD recvd;
		2296	DWORD flags = 0;
		2297	buf.buf = dummy;
		2298	buf.len = sizeof (dummy);
		2299	WSARecv (EV_FD_TO_WIN32_HANDLE (evpipe [0]), &buf, 1, &recvd, &flags, 0, 0);
		2300	#else
1423	read (evpipe [0], &dummy, 1);	2301	read (evpipe [0], &dummy, sizeof (dummy));
		2302	#endif
		2303	}
1424	}	2304	}
		2305
		2306	pipe_write_skipped = 0;
		2307
		2308	ECB_MEMORY_FENCE; /* push out skipped, acquire flags */
1425		2309
1426	#if EV_SIGNAL_ENABLE	2310	#if EV_SIGNAL_ENABLE
1427	if (sig_pending)	2311	if (sig_pending)
1428	{	2312	{
1429	sig_pending = 0;	2313	sig_pending = 0;
		2314
		2315	ECB_MEMORY_FENCE;
1430		2316
1431	for (i = EV_NSIG - 1; i--; )	2317	for (i = EV_NSIG - 1; i--; )
1432	if (expect_false (signals [i].pending))	2318	if (expect_false (signals [i].pending))
1433	ev_feed_signal_event (EV_A_ i + 1);	2319	ev_feed_signal_event (EV_A_ i + 1);
1434	}	2320	}
…		…
1436		2322
1437	#if EV_ASYNC_ENABLE	2323	#if EV_ASYNC_ENABLE
1438	if (async_pending)	2324	if (async_pending)
1439	{	2325	{
1440	async_pending = 0;	2326	async_pending = 0;
		2327
		2328	ECB_MEMORY_FENCE;
1441		2329
1442	for (i = asynccnt; i--; )	2330	for (i = asynccnt; i--; )
1443	if (asyncs [i]->sent)	2331	if (asyncs [i]->sent)
1444	{	2332	{
1445	asyncs [i]->sent = 0;	2333	asyncs [i]->sent = 0;
		2334	ECB_MEMORY_FENCE_RELEASE;
1446	ev_feed_event (EV_A_ asyncs [i], EV_ASYNC);	2335	ev_feed_event (EV_A_ asyncs [i], EV_ASYNC);
1447	}	2336	}
1448	}	2337	}
1449	#endif	2338	#endif
1450	}	2339	}
1451		2340
1452	/*****************************************************************************/	2341	/*****************************************************************************/
1453		2342
1454	void	2343	void
1455	ev_feed_signal (int signum)	2344	ev_feed_signal (int signum) EV_THROW
1456	{	2345	{
1457	#if EV_MULTIPLICITY	2346	#if EV_MULTIPLICITY
		2347	EV_P;
		2348	ECB_MEMORY_FENCE_ACQUIRE;
1458	EV_P = signals [signum - 1].loop;	2349	EV_A = signals [signum - 1].loop;
1459		2350
1460	if (!EV_A)	2351	if (!EV_A)
1461	return;	2352	return;
1462	#endif	2353	#endif
1463		2354
…		…
1474		2365
1475	ev_feed_signal (signum);	2366	ev_feed_signal (signum);
1476	}	2367	}
1477		2368
1478	void noinline	2369	void noinline
1479	ev_feed_signal_event (EV_P_ int signum)	2370	ev_feed_signal_event (EV_P_ int signum) EV_THROW
1480	{	2371	{
1481	WL w;	2372	WL w;
1482		2373
1483	if (expect_false (signum <= 0 || signum > EV_NSIG))	2374	if (expect_false (signum <= 0 || signum >= EV_NSIG))
1484	return;	2375	return;
1485		2376
1486	--signum;	2377	--signum;
1487		2378
1488	#if EV_MULTIPLICITY	2379	#if EV_MULTIPLICITY
…		…
1492	if (expect_false (signals [signum].loop != EV_A))	2383	if (expect_false (signals [signum].loop != EV_A))
1493	return;	2384	return;
1494	#endif	2385	#endif
1495		2386
1496	signals [signum].pending = 0;	2387	signals [signum].pending = 0;
		2388	ECB_MEMORY_FENCE_RELEASE;
1497		2389
1498	for (w = signals [signum].head; w; w = w->next)	2390	for (w = signals [signum].head; w; w = w->next)
1499	ev_feed_event (EV_A_ (W)w, EV_SIGNAL);	2391	ev_feed_event (EV_A_ (W)w, EV_SIGNAL);
1500	}	2392	}
1501		2393
…		…
1599	#endif	2491	#endif
1600	#if EV_USE_SELECT	2492	#if EV_USE_SELECT
1601	# include "ev_select.c"	2493	# include "ev_select.c"
1602	#endif	2494	#endif
1603		2495
1604	int	2496	int ecb_cold
1605	ev_version_major (void)	2497	ev_version_major (void) EV_THROW
1606	{	2498	{
1607	return EV_VERSION_MAJOR;	2499	return EV_VERSION_MAJOR;
1608	}	2500	}
1609		2501
1610	int	2502	int ecb_cold
1611	ev_version_minor (void)	2503	ev_version_minor (void) EV_THROW
1612	{	2504	{
1613	return EV_VERSION_MINOR;	2505	return EV_VERSION_MINOR;
1614	}	2506	}
1615		2507
1616	/* return true if we are running with elevated privileges and should ignore env variables */	2508	/* return true if we are running with elevated privileges and should ignore env variables */
1617	int inline_size	2509	int inline_size ecb_cold
1618	enable_secure (void)	2510	enable_secure (void)
1619	{	2511	{
1620	#ifdef _WIN32	2512	#ifdef _WIN32
1621	return 0;	2513	return 0;
1622	#else	2514	#else
1623	return getuid () != geteuid ()	2515	return getuid () != geteuid ()
1624	|| getgid () != getegid ();	2516	|| getgid () != getegid ();
1625	#endif	2517	#endif
1626	}	2518	}
1627		2519
1628	unsigned int	2520	unsigned int ecb_cold
1629	ev_supported_backends (void)	2521	ev_supported_backends (void) EV_THROW
1630	{	2522	{
1631	unsigned int flags = 0;	2523	unsigned int flags = 0;
1632		2524
1633	if (EV_USE_PORT ) flags |= EVBACKEND_PORT;	2525	if (EV_USE_PORT ) flags |= EVBACKEND_PORT;
1634	if (EV_USE_KQUEUE) flags |= EVBACKEND_KQUEUE;	2526	if (EV_USE_KQUEUE) flags |= EVBACKEND_KQUEUE;
…		…
1637	if (EV_USE_SELECT) flags |= EVBACKEND_SELECT;	2529	if (EV_USE_SELECT) flags |= EVBACKEND_SELECT;
1638		2530
1639	return flags;	2531	return flags;
1640	}	2532	}
1641		2533
1642	unsigned int	2534	unsigned int ecb_cold
1643	ev_recommended_backends (void)	2535	ev_recommended_backends (void) EV_THROW
1644	{	2536	{
1645	unsigned int flags = ev_supported_backends ();	2537	unsigned int flags = ev_supported_backends ();
1646		2538
1647	#ifndef __NetBSD__	2539	#ifndef __NetBSD__
1648	/* kqueue is borked on everything but netbsd apparently */	2540	/* kqueue is borked on everything but netbsd apparently */
…		…
1659	#endif	2551	#endif
1660		2552
1661	return flags;	2553	return flags;
1662	}	2554	}
1663		2555
1664	unsigned int	2556	unsigned int ecb_cold
1665	ev_embeddable_backends (void)	2557	ev_embeddable_backends (void) EV_THROW
1666	{	2558	{
1667	int flags = EVBACKEND_EPOLL | EVBACKEND_KQUEUE | EVBACKEND_PORT;	2559	int flags = EVBACKEND_EPOLL | EVBACKEND_KQUEUE | EVBACKEND_PORT;
1668		2560
1669	/* epoll embeddability broken on all linux versions up to at least 2.6.23 */	2561	/* 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 */	2562	if (ev_linux_version () < 0x020620) /* disable it on linux < 2.6.32 */
…		…
1672		2564
1673	return flags;	2565	return flags;
1674	}	2566	}
1675		2567
1676	unsigned int	2568	unsigned int
1677	ev_backend (EV_P)	2569	ev_backend (EV_P) EV_THROW
1678	{	2570	{
1679	return backend;	2571	return backend;
1680	}	2572	}
1681		2573
1682	#if EV_FEATURE_API	2574	#if EV_FEATURE_API
1683	unsigned int	2575	unsigned int
1684	ev_iteration (EV_P)	2576	ev_iteration (EV_P) EV_THROW
1685	{	2577	{
1686	return loop_count;	2578	return loop_count;
1687	}	2579	}
1688		2580
1689	unsigned int	2581	unsigned int
1690	ev_depth (EV_P)	2582	ev_depth (EV_P) EV_THROW
1691	{	2583	{
1692	return loop_depth;	2584	return loop_depth;
1693	}	2585	}
1694		2586
1695	void	2587	void
1696	ev_set_io_collect_interval (EV_P_ ev_tstamp interval)	2588	ev_set_io_collect_interval (EV_P_ ev_tstamp interval) EV_THROW
1697	{	2589	{
1698	io_blocktime = interval;	2590	io_blocktime = interval;
1699	}	2591	}
1700		2592
1701	void	2593	void
1702	ev_set_timeout_collect_interval (EV_P_ ev_tstamp interval)	2594	ev_set_timeout_collect_interval (EV_P_ ev_tstamp interval) EV_THROW
1703	{	2595	{
1704	timeout_blocktime = interval;	2596	timeout_blocktime = interval;
1705	}	2597	}
1706		2598
1707	void	2599	void
1708	ev_set_userdata (EV_P_ void *data)	2600	ev_set_userdata (EV_P_ void *data) EV_THROW
1709	{	2601	{
1710	userdata = data;	2602	userdata = data;
1711	}	2603	}
1712		2604
1713	void *	2605	void *
1714	ev_userdata (EV_P)	2606	ev_userdata (EV_P) EV_THROW
1715	{	2607	{
1716	return userdata;	2608	return userdata;
1717	}	2609	}
1718		2610
		2611	void
1719	void ev_set_invoke_pending_cb (EV_P_ void (*invoke_pending_cb)(EV_P))	2612	ev_set_invoke_pending_cb (EV_P_ ev_loop_callback invoke_pending_cb) EV_THROW
1720	{	2613	{
1721	invoke_cb = invoke_pending_cb;	2614	invoke_cb = invoke_pending_cb;
1722	}	2615	}
1723		2616
		2617	void
1724	void ev_set_loop_release_cb (EV_P_ void (*release)(EV_P), void (*acquire)(EV_P))	2618	ev_set_loop_release_cb (EV_P_ void (*release)(EV_P) EV_THROW, void (*acquire)(EV_P) EV_THROW) EV_THROW
1725	{	2619	{
1726	release_cb = release;	2620	release_cb = release;
1727	acquire_cb = acquire;	2621	acquire_cb = acquire;
1728	}	2622	}
1729	#endif	2623	#endif
1730		2624
1731	/* initialise a loop structure, must be zero-initialised */	2625	/* initialise a loop structure, must be zero-initialised */
1732	static void noinline	2626	static void noinline ecb_cold
1733	loop_init (EV_P_ unsigned int flags)	2627	loop_init (EV_P_ unsigned int flags) EV_THROW
1734	{	2628	{
1735	if (!backend)	2629	if (!backend)
1736	{	2630	{
1737	origflags = flags;	2631	origflags = flags;
1738		2632
…		…
1765	if (!(flags & EVFLAG_NOENV)	2659	if (!(flags & EVFLAG_NOENV)
1766	&& !enable_secure ()	2660	&& !enable_secure ()
1767	&& getenv ("LIBEV_FLAGS"))	2661	&& getenv ("LIBEV_FLAGS"))
1768	flags = atoi (getenv ("LIBEV_FLAGS"));	2662	flags = atoi (getenv ("LIBEV_FLAGS"));
1769		2663
1770	ev_rt_now = ev_time ();	2664	ev_rt_now = ev_time ();
1771	mn_now = get_clock ();	2665	mn_now = get_clock ();
1772	now_floor = mn_now;	2666	now_floor = mn_now;
1773	rtmn_diff = ev_rt_now - mn_now;	2667	rtmn_diff = ev_rt_now - mn_now;
1774	#if EV_FEATURE_API	2668	#if EV_FEATURE_API
1775	invoke_cb = ev_invoke_pending;	2669	invoke_cb = ev_invoke_pending;
1776	#endif	2670	#endif
1777		2671
1778	io_blocktime = 0.;	2672	io_blocktime = 0.;
1779	timeout_blocktime = 0.;	2673	timeout_blocktime = 0.;
1780	backend = 0;	2674	backend = 0;
1781	backend_fd = -1;	2675	backend_fd = -1;
1782	sig_pending = 0;	2676	sig_pending = 0;
1783	#if EV_ASYNC_ENABLE	2677	#if EV_ASYNC_ENABLE
1784	async_pending = 0;	2678	async_pending = 0;
1785	#endif	2679	#endif
		2680	pipe_write_skipped = 0;
		2681	pipe_write_wanted = 0;
		2682	evpipe [0] = -1;
		2683	evpipe [1] = -1;
1786	#if EV_USE_INOTIFY	2684	#if EV_USE_INOTIFY
1787	fs_fd = flags & EVFLAG_NOINOTIFY ? -1 : -2;	2685	fs_fd = flags & EVFLAG_NOINOTIFY ? -1 : -2;
1788	#endif	2686	#endif
1789	#if EV_USE_SIGNALFD	2687	#if EV_USE_SIGNALFD
1790	sigfd = flags & EVFLAG_SIGNALFD ? -2 : -1;	2688	sigfd = flags & EVFLAG_SIGNALFD ? -2 : -1;
1791	#endif	2689	#endif
1792		2690
1793	if (!(flags & EVBACKEND_MASK))	2691	if (!(flags & EVBACKEND_MASK))
1794	flags |= ev_recommended_backends ();	2692	flags |= ev_recommended_backends ();
1795		2693
…		…
1820	#endif	2718	#endif
1821	}	2719	}
1822	}	2720	}
1823		2721
1824	/* free up a loop structure */	2722	/* free up a loop structure */
1825	void	2723	void ecb_cold
1826	ev_loop_destroy (EV_P)	2724	ev_loop_destroy (EV_P)
1827	{	2725	{
1828	int i;	2726	int i;
1829		2727
1830	#if EV_MULTIPLICITY	2728	#if EV_MULTIPLICITY
…		…
1841	EV_INVOKE_PENDING;	2739	EV_INVOKE_PENDING;
1842	}	2740	}
1843	#endif	2741	#endif
1844		2742
1845	#if EV_CHILD_ENABLE	2743	#if EV_CHILD_ENABLE
1846	if (ev_is_active (&childev))	2744	if (ev_is_default_loop (EV_A) && ev_is_active (&childev))
1847	{	2745	{
1848	ev_ref (EV_A); /* child watcher */	2746	ev_ref (EV_A); /* child watcher */
1849	ev_signal_stop (EV_A_ &childev);	2747	ev_signal_stop (EV_A_ &childev);
1850	}	2748	}
1851	#endif	2749	#endif
…		…
1853	if (ev_is_active (&pipe_w))	2751	if (ev_is_active (&pipe_w))
1854	{	2752	{
1855	/*ev_ref (EV_A);*/	2753	/*ev_ref (EV_A);*/
1856	/*ev_io_stop (EV_A_ &pipe_w);*/	2754	/*ev_io_stop (EV_A_ &pipe_w);*/
1857		2755
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]);	2756	if (evpipe [0] >= 0) EV_WIN32_CLOSE_FD (evpipe [0]);
1866	EV_WIN32_CLOSE_FD (evpipe [1]);	2757	if (evpipe [1] >= 0) EV_WIN32_CLOSE_FD (evpipe [1]);
1867	}
1868	}	2758	}
1869		2759
1870	#if EV_USE_SIGNALFD	2760	#if EV_USE_SIGNALFD
1871	if (ev_is_active (&sigfd_w))	2761	if (ev_is_active (&sigfd_w))
1872	close (sigfd);	2762	close (sigfd);
…		…
1958	#endif	2848	#endif
1959	#if EV_USE_INOTIFY	2849	#if EV_USE_INOTIFY
1960	infy_fork (EV_A);	2850	infy_fork (EV_A);
1961	#endif	2851	#endif
1962		2852
		2853	#if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE
1963	if (ev_is_active (&pipe_w))	2854	if (ev_is_active (&pipe_w))
1964	{	2855	{
1965	/* this "locks" the handlers against writing to the pipe */	2856	/* 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		2857
1972	ev_ref (EV_A);	2858	ev_ref (EV_A);
1973	ev_io_stop (EV_A_ &pipe_w);	2859	ev_io_stop (EV_A_ &pipe_w);
1974		2860
1975	#if EV_USE_EVENTFD
1976	if (evfd >= 0)
1977	close (evfd);
1978	#endif
1979
1980	if (evpipe [0] >= 0)	2861	if (evpipe [0] >= 0)
1981	{
1982	EV_WIN32_CLOSE_FD (evpipe [0]);	2862	EV_WIN32_CLOSE_FD (evpipe [0]);
1983	EV_WIN32_CLOSE_FD (evpipe [1]);
1984	}
1985		2863
1986	#if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE
1987	evpipe_init (EV_A);	2864	evpipe_init (EV_A);
1988	/* now iterate over everything, in case we missed something */	2865	/* iterate over everything, in case we missed something before */
1989	pipecb (EV_A_ &pipe_w, EV_READ);	2866	ev_feed_event (EV_A_ &pipe_w, EV_CUSTOM);
1990	#endif
1991	}	2867	}
		2868	#endif
1992		2869
1993	postfork = 0;	2870	postfork = 0;
1994	}	2871	}
1995		2872
1996	#if EV_MULTIPLICITY	2873	#if EV_MULTIPLICITY
1997		2874
1998	struct ev_loop *	2875	struct ev_loop * ecb_cold
1999	ev_loop_new (unsigned int flags)	2876	ev_loop_new (unsigned int flags) EV_THROW
2000	{	2877	{
2001	EV_P = (struct ev_loop *)ev_malloc (sizeof (struct ev_loop));	2878	EV_P = (struct ev_loop *)ev_malloc (sizeof (struct ev_loop));
2002		2879
2003	memset (EV_A, 0, sizeof (struct ev_loop));	2880	memset (EV_A, 0, sizeof (struct ev_loop));
2004	loop_init (EV_A_ flags);	2881	loop_init (EV_A_ flags);
…		…
2011	}	2888	}
2012		2889
2013	#endif /* multiplicity */	2890	#endif /* multiplicity */
2014		2891
2015	#if EV_VERIFY	2892	#if EV_VERIFY
2016	static void noinline	2893	static void noinline ecb_cold
2017	verify_watcher (EV_P_ W w)	2894	verify_watcher (EV_P_ W w)
2018	{	2895	{
2019	assert (("libev: watcher has invalid priority", ABSPRI (w) >= 0 && ABSPRI (w) < NUMPRI));	2896	assert (("libev: watcher has invalid priority", ABSPRI (w) >= 0 && ABSPRI (w) < NUMPRI));
2020		2897
2021	if (w->pending)	2898	if (w->pending)
2022	assert (("libev: pending watcher not on pending queue", pendings [ABSPRI (w)][w->pending - 1].w == w));	2899	assert (("libev: pending watcher not on pending queue", pendings [ABSPRI (w)][w->pending - 1].w == w));
2023	}	2900	}
2024		2901
2025	static void noinline	2902	static void noinline ecb_cold
2026	verify_heap (EV_P_ ANHE *heap, int N)	2903	verify_heap (EV_P_ ANHE *heap, int N)
2027	{	2904	{
2028	int i;	2905	int i;
2029		2906
2030	for (i = HEAP0; i < N + HEAP0; ++i)	2907	for (i = HEAP0; i < N + HEAP0; ++i)
…		…
2035		2912
2036	verify_watcher (EV_A_ (W)ANHE_w (heap [i]));	2913	verify_watcher (EV_A_ (W)ANHE_w (heap [i]));
2037	}	2914	}
2038	}	2915	}
2039		2916
2040	static void noinline	2917	static void noinline ecb_cold
2041	array_verify (EV_P_ W *ws, int cnt)	2918	array_verify (EV_P_ W *ws, int cnt)
2042	{	2919	{
2043	while (cnt--)	2920	while (cnt--)
2044	{	2921	{
2045	assert (("libev: active index mismatch", ev_active (ws [cnt]) == cnt + 1));	2922	assert (("libev: active index mismatch", ev_active (ws [cnt]) == cnt + 1));
…		…
2047	}	2924	}
2048	}	2925	}
2049	#endif	2926	#endif
2050		2927
2051	#if EV_FEATURE_API	2928	#if EV_FEATURE_API
2052	void	2929	void ecb_cold
2053	ev_verify (EV_P)	2930	ev_verify (EV_P) EV_THROW
2054	{	2931	{
2055	#if EV_VERIFY	2932	#if EV_VERIFY
2056	int i;	2933	int i;
2057	WL w;	2934	WL w, w2;
2058		2935
2059	assert (activecnt >= -1);	2936	assert (activecnt >= -1);
2060		2937
2061	assert (fdchangemax >= fdchangecnt);	2938	assert (fdchangemax >= fdchangecnt);
2062	for (i = 0; i < fdchangecnt; ++i)	2939	for (i = 0; i < fdchangecnt; ++i)
2063	assert (("libev: negative fd in fdchanges", fdchanges [i] >= 0));	2940	assert (("libev: negative fd in fdchanges", fdchanges [i] >= 0));
2064		2941
2065	assert (anfdmax >= 0);	2942	assert (anfdmax >= 0);
2066	for (i = 0; i < anfdmax; ++i)	2943	for (i = 0; i < anfdmax; ++i)
		2944	{
		2945	int j = 0;
		2946
2067	for (w = anfds [i].head; w; w = w->next)	2947	for (w = w2 = anfds [i].head; w; w = w->next)
2068	{	2948	{
2069	verify_watcher (EV_A_ (W)w);	2949	verify_watcher (EV_A_ (W)w);
		2950
		2951	if (j++ & 1)
		2952	{
		2953	assert (("libev: io watcher list contains a loop", w != w2));
		2954	w2 = w2->next;
		2955	}
		2956
2070	assert (("libev: inactive fd watcher on anfd list", ev_active (w) == 1));	2957	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));	2958	assert (("libev: fd mismatch between watcher and anfd", ((ev_io *)w)->fd == i));
2072	}	2959	}
		2960	}
2073		2961
2074	assert (timermax >= timercnt);	2962	assert (timermax >= timercnt);
2075	verify_heap (EV_A_ timers, timercnt);	2963	verify_heap (EV_A_ timers, timercnt);
2076		2964
2077	#if EV_PERIODIC_ENABLE	2965	#if EV_PERIODIC_ENABLE
…		…
2123	#endif	3011	#endif
2124	}	3012	}
2125	#endif	3013	#endif
2126		3014
2127	#if EV_MULTIPLICITY	3015	#if EV_MULTIPLICITY
2128	struct ev_loop *	3016	struct ev_loop * ecb_cold
2129	#else	3017	#else
2130	int	3018	int
2131	#endif	3019	#endif
2132	ev_default_loop (unsigned int flags)	3020	ev_default_loop (unsigned int flags) EV_THROW
2133	{	3021	{
2134	if (!ev_default_loop_ptr)	3022	if (!ev_default_loop_ptr)
2135	{	3023	{
2136	#if EV_MULTIPLICITY	3024	#if EV_MULTIPLICITY
2137	EV_P = ev_default_loop_ptr = &default_loop_struct;	3025	EV_P = ev_default_loop_ptr = &default_loop_struct;
…		…
2156		3044
2157	return ev_default_loop_ptr;	3045	return ev_default_loop_ptr;
2158	}	3046	}
2159		3047
2160	void	3048	void
2161	ev_loop_fork (EV_P)	3049	ev_loop_fork (EV_P) EV_THROW
2162	{	3050	{
2163	postfork = 1; /* must be in line with ev_default_fork */	3051	postfork = 1;
2164	}	3052	}
2165		3053
2166	/*****************************************************************************/	3054	/*****************************************************************************/
2167		3055
2168	void	3056	void
…		…
2170	{	3058	{
2171	EV_CB_INVOKE ((W)w, revents);	3059	EV_CB_INVOKE ((W)w, revents);
2172	}	3060	}
2173		3061
2174	unsigned int	3062	unsigned int
2175	ev_pending_count (EV_P)	3063	ev_pending_count (EV_P) EV_THROW
2176	{	3064	{
2177	int pri;	3065	int pri;
2178	unsigned int count = 0;	3066	unsigned int count = 0;
2179		3067
2180	for (pri = NUMPRI; pri--; )	3068	for (pri = NUMPRI; pri--; )
…		…
2184	}	3072	}
2185		3073
2186	void noinline	3074	void noinline
2187	ev_invoke_pending (EV_P)	3075	ev_invoke_pending (EV_P)
2188	{	3076	{
2189	int pri;	3077	pendingpri = NUMPRI;
2190		3078
2191	for (pri = NUMPRI; pri--; )	3079	while (pendingpri) /* pendingpri possibly gets modified in the inner loop */
		3080	{
		3081	--pendingpri;
		3082
2192	while (pendingcnt [pri])	3083	while (pendingcnt [pendingpri])
2193	{	3084	{
2194	ANPENDING *p = pendings [pri] + --pendingcnt [pri];	3085	ANPENDING *p = pendings [pendingpri] + --pendingcnt [pendingpri];
2195		3086
2196	p->w->pending = 0;	3087	p->w->pending = 0;
2197	EV_CB_INVOKE (p->w, p->events);	3088	EV_CB_INVOKE (p->w, p->events);
2198	EV_FREQUENT_CHECK;	3089	EV_FREQUENT_CHECK;
2199	}	3090	}
		3091	}
2200	}	3092	}
2201		3093
2202	#if EV_IDLE_ENABLE	3094	#if EV_IDLE_ENABLE
2203	/* make idle watchers pending. this handles the "call-idle */	3095	/* make idle watchers pending. this handles the "call-idle */
2204	/* only when higher priorities are idle" logic */	3096	/* only when higher priorities are idle" logic */
…		…
2294	{	3186	{
2295	EV_FREQUENT_CHECK;	3187	EV_FREQUENT_CHECK;
2296		3188
2297	while (periodiccnt && ANHE_at (periodics [HEAP0]) < ev_rt_now)	3189	while (periodiccnt && ANHE_at (periodics [HEAP0]) < ev_rt_now)
2298	{	3190	{
2299	int feed_count = 0;
2300
2301	do	3191	do
2302	{	3192	{
2303	ev_periodic *w = (ev_periodic *)ANHE_w (periodics [HEAP0]);	3193	ev_periodic *w = (ev_periodic *)ANHE_w (periodics [HEAP0]);
2304		3194
2305	/*assert (("libev: inactive timer on periodic heap detected", ev_is_active (w)));*/	3195	/*assert (("libev: inactive timer on periodic heap detected", ev_is_active (w)));*/
…		…
2332	}	3222	}
2333	}	3223	}
2334		3224
2335	/* simply recalculate all periodics */	3225	/* simply recalculate all periodics */
2336	/* TODO: maybe ensure that at least one event happens when jumping forward? */	3226	/* TODO: maybe ensure that at least one event happens when jumping forward? */
2337	static void noinline	3227	static void noinline ecb_cold
2338	periodics_reschedule (EV_P)	3228	periodics_reschedule (EV_P)
2339	{	3229	{
2340	int i;	3230	int i;
2341		3231
2342	/* adjust periodics after time jump */	3232	/* adjust periodics after time jump */
…		…
2355	reheap (periodics, periodiccnt);	3245	reheap (periodics, periodiccnt);
2356	}	3246	}
2357	#endif	3247	#endif
2358		3248
2359	/* adjust all timers by a given offset */	3249	/* adjust all timers by a given offset */
2360	static void noinline	3250	static void noinline ecb_cold
2361	timers_reschedule (EV_P_ ev_tstamp adjust)	3251	timers_reschedule (EV_P_ ev_tstamp adjust)
2362	{	3252	{
2363	int i;	3253	int i;
2364		3254
2365	for (i = 0; i < timercnt; ++i)	3255	for (i = 0; i < timercnt; ++i)
…		…
2439		3329
2440	mn_now = ev_rt_now;	3330	mn_now = ev_rt_now;
2441	}	3331	}
2442	}	3332	}
2443		3333
2444	void	3334	int
2445	ev_run (EV_P_ int flags)	3335	ev_run (EV_P_ int flags)
2446	{	3336	{
2447	#if EV_FEATURE_API	3337	#if EV_FEATURE_API
2448	++loop_depth;	3338	++loop_depth;
2449	#endif	3339	#endif
…		…
2507	ev_tstamp prev_mn_now = mn_now;	3397	ev_tstamp prev_mn_now = mn_now;
2508		3398
2509	/* update time to cancel out callback processing overhead */	3399	/* update time to cancel out callback processing overhead */
2510	time_update (EV_A_ 1e100);	3400	time_update (EV_A_ 1e100);
2511		3401
		3402	/* from now on, we want a pipe-wake-up */
		3403	pipe_write_wanted = 1;
		3404
		3405	ECB_MEMORY_FENCE; /* make sure pipe_write_wanted is visible before we check for potential skips */
		3406
2512	if (expect_true (!(flags & EVRUN_NOWAIT || idleall || !activecnt)))	3407	if (expect_true (!(flags & EVRUN_NOWAIT || idleall || !activecnt || pipe_write_skipped)))
2513	{	3408	{
2514	waittime = MAX_BLOCKTIME;	3409	waittime = MAX_BLOCKTIME;
2515		3410
2516	if (timercnt)	3411	if (timercnt)
2517	{	3412	{
2518	ev_tstamp to = ANHE_at (timers [HEAP0]) - mn_now + backend_fudge;	3413	ev_tstamp to = ANHE_at (timers [HEAP0]) - mn_now;
2519	if (waittime > to) waittime = to;	3414	if (waittime > to) waittime = to;
2520	}	3415	}
2521		3416
2522	#if EV_PERIODIC_ENABLE	3417	#if EV_PERIODIC_ENABLE
2523	if (periodiccnt)	3418	if (periodiccnt)
2524	{	3419	{
2525	ev_tstamp to = ANHE_at (periodics [HEAP0]) - ev_rt_now + backend_fudge;	3420	ev_tstamp to = ANHE_at (periodics [HEAP0]) - ev_rt_now;
2526	if (waittime > to) waittime = to;	3421	if (waittime > to) waittime = to;
2527	}	3422	}
2528	#endif	3423	#endif
2529		3424
2530	/* don't let timeouts decrease the waittime below timeout_blocktime */	3425	/* don't let timeouts decrease the waittime below timeout_blocktime */
2531	if (expect_false (waittime < timeout_blocktime))	3426	if (expect_false (waittime < timeout_blocktime))
2532	waittime = timeout_blocktime;	3427	waittime = timeout_blocktime;
		3428
		3429	/* at this point, we NEED to wait, so we have to ensure */
		3430	/* to pass a minimum nonzero value to the backend */
		3431	if (expect_false (waittime < backend_mintime))
		3432	waittime = backend_mintime;
2533		3433
2534	/* extra check because io_blocktime is commonly 0 */	3434	/* extra check because io_blocktime is commonly 0 */
2535	if (expect_false (io_blocktime))	3435	if (expect_false (io_blocktime))
2536	{	3436	{
2537	sleeptime = io_blocktime - (mn_now - prev_mn_now);	3437	sleeptime = io_blocktime - (mn_now - prev_mn_now);
2538		3438
2539	if (sleeptime > waittime - backend_fudge)	3439	if (sleeptime > waittime - backend_mintime)
2540	sleeptime = waittime - backend_fudge;	3440	sleeptime = waittime - backend_mintime;
2541		3441
2542	if (expect_true (sleeptime > 0.))	3442	if (expect_true (sleeptime > 0.))
2543	{	3443	{
2544	ev_sleep (sleeptime);	3444	ev_sleep (sleeptime);
2545	waittime -= sleeptime;	3445	waittime -= sleeptime;
…		…
2552	#endif	3452	#endif
2553	assert ((loop_done = EVBREAK_RECURSE, 1)); /* assert for side effect */	3453	assert ((loop_done = EVBREAK_RECURSE, 1)); /* assert for side effect */
2554	backend_poll (EV_A_ waittime);	3454	backend_poll (EV_A_ waittime);
2555	assert ((loop_done = EVBREAK_CANCEL, 1)); /* assert for side effect */	3455	assert ((loop_done = EVBREAK_CANCEL, 1)); /* assert for side effect */
2556		3456
		3457	pipe_write_wanted = 0; /* just an optimisation, no fence needed */
		3458
		3459	ECB_MEMORY_FENCE_ACQUIRE;
		3460	if (pipe_write_skipped)
		3461	{
		3462	assert (("libev: pipe_w not active, but pipe not written", ev_is_active (&pipe_w)));
		3463	ev_feed_event (EV_A_ &pipe_w, EV_CUSTOM);
		3464	}
		3465
		3466
2557	/* update ev_rt_now, do magic */	3467	/* update ev_rt_now, do magic */
2558	time_update (EV_A_ waittime + sleeptime);	3468	time_update (EV_A_ waittime + sleeptime);
2559	}	3469	}
2560		3470
2561	/* queue pending timers and reschedule them */	3471	/* queue pending timers and reschedule them */
…		…
2587	loop_done = EVBREAK_CANCEL;	3497	loop_done = EVBREAK_CANCEL;
2588		3498
2589	#if EV_FEATURE_API	3499	#if EV_FEATURE_API
2590	--loop_depth;	3500	--loop_depth;
2591	#endif	3501	#endif
		3502
		3503	return activecnt;
2592	}	3504	}
2593		3505
2594	void	3506	void
2595	ev_break (EV_P_ int how)	3507	ev_break (EV_P_ int how) EV_THROW
2596	{	3508	{
2597	loop_done = how;	3509	loop_done = how;
2598	}	3510	}
2599		3511
2600	void	3512	void
2601	ev_ref (EV_P)	3513	ev_ref (EV_P) EV_THROW
2602	{	3514	{
2603	++activecnt;	3515	++activecnt;
2604	}	3516	}
2605		3517
2606	void	3518	void
2607	ev_unref (EV_P)	3519	ev_unref (EV_P) EV_THROW
2608	{	3520	{
2609	--activecnt;	3521	--activecnt;
2610	}	3522	}
2611		3523
2612	void	3524	void
2613	ev_now_update (EV_P)	3525	ev_now_update (EV_P) EV_THROW
2614	{	3526	{
2615	time_update (EV_A_ 1e100);	3527	time_update (EV_A_ 1e100);
2616	}	3528	}
2617		3529
2618	void	3530	void
2619	ev_suspend (EV_P)	3531	ev_suspend (EV_P) EV_THROW
2620	{	3532	{
2621	ev_now_update (EV_A);	3533	ev_now_update (EV_A);
2622	}	3534	}
2623		3535
2624	void	3536	void
2625	ev_resume (EV_P)	3537	ev_resume (EV_P) EV_THROW
2626	{	3538	{
2627	ev_tstamp mn_prev = mn_now;	3539	ev_tstamp mn_prev = mn_now;
2628		3540
2629	ev_now_update (EV_A);	3541	ev_now_update (EV_A);
2630	timers_reschedule (EV_A_ mn_now - mn_prev);	3542	timers_reschedule (EV_A_ mn_now - mn_prev);
…		…
2669	w->pending = 0;	3581	w->pending = 0;
2670	}	3582	}
2671	}	3583	}
2672		3584
2673	int	3585	int
2674	ev_clear_pending (EV_P_ void *w)	3586	ev_clear_pending (EV_P_ void *w) EV_THROW
2675	{	3587	{
2676	W w_ = (W)w;	3588	W w_ = (W)w;
2677	int pending = w_->pending;	3589	int pending = w_->pending;
2678		3590
2679	if (expect_true (pending))	3591	if (expect_true (pending))
…		…
2712	}	3624	}
2713		3625
2714	/*****************************************************************************/	3626	/*****************************************************************************/
2715		3627
2716	void noinline	3628	void noinline
2717	ev_io_start (EV_P_ ev_io *w)	3629	ev_io_start (EV_P_ ev_io *w) EV_THROW
2718	{	3630	{
2719	int fd = w->fd;	3631	int fd = w->fd;
2720		3632
2721	if (expect_false (ev_is_active (w)))	3633	if (expect_false (ev_is_active (w)))
2722	return;	3634	return;
…		…
2728		3640
2729	ev_start (EV_A_ (W)w, 1);	3641	ev_start (EV_A_ (W)w, 1);
2730	array_needsize (ANFD, anfds, anfdmax, fd + 1, array_init_zero);	3642	array_needsize (ANFD, anfds, anfdmax, fd + 1, array_init_zero);
2731	wlist_add (&anfds[fd].head, (WL)w);	3643	wlist_add (&anfds[fd].head, (WL)w);
2732		3644
		3645	/* common bug, apparently */
		3646	assert (("libev: ev_io_start called with corrupted watcher", ((WL)w)->next != (WL)w));
		3647
2733	fd_change (EV_A_ fd, w->events & EV__IOFDSET | EV_ANFD_REIFY);	3648	fd_change (EV_A_ fd, w->events & EV__IOFDSET | EV_ANFD_REIFY);
2734	w->events &= ~EV__IOFDSET;	3649	w->events &= ~EV__IOFDSET;
2735		3650
2736	EV_FREQUENT_CHECK;	3651	EV_FREQUENT_CHECK;
2737	}	3652	}
2738		3653
2739	void noinline	3654	void noinline
2740	ev_io_stop (EV_P_ ev_io *w)	3655	ev_io_stop (EV_P_ ev_io *w) EV_THROW
2741	{	3656	{
2742	clear_pending (EV_A_ (W)w);	3657	clear_pending (EV_A_ (W)w);
2743	if (expect_false (!ev_is_active (w)))	3658	if (expect_false (!ev_is_active (w)))
2744	return;	3659	return;
2745		3660
…		…
2754		3669
2755	EV_FREQUENT_CHECK;	3670	EV_FREQUENT_CHECK;
2756	}	3671	}
2757		3672
2758	void noinline	3673	void noinline
2759	ev_timer_start (EV_P_ ev_timer *w)	3674	ev_timer_start (EV_P_ ev_timer *w) EV_THROW
2760	{	3675	{
2761	if (expect_false (ev_is_active (w)))	3676	if (expect_false (ev_is_active (w)))
2762	return;	3677	return;
2763		3678
2764	ev_at (w) += mn_now;	3679	ev_at (w) += mn_now;
…		…
2778		3693
2779	/*assert (("libev: internal timer heap corruption", timers [ev_active (w)] == (WT)w));*/	3694	/*assert (("libev: internal timer heap corruption", timers [ev_active (w)] == (WT)w));*/
2780	}	3695	}
2781		3696
2782	void noinline	3697	void noinline
2783	ev_timer_stop (EV_P_ ev_timer *w)	3698	ev_timer_stop (EV_P_ ev_timer *w) EV_THROW
2784	{	3699	{
2785	clear_pending (EV_A_ (W)w);	3700	clear_pending (EV_A_ (W)w);
2786	if (expect_false (!ev_is_active (w)))	3701	if (expect_false (!ev_is_active (w)))
2787	return;	3702	return;
2788		3703
…		…
2808		3723
2809	EV_FREQUENT_CHECK;	3724	EV_FREQUENT_CHECK;
2810	}	3725	}
2811		3726
2812	void noinline	3727	void noinline
2813	ev_timer_again (EV_P_ ev_timer *w)	3728	ev_timer_again (EV_P_ ev_timer *w) EV_THROW
2814	{	3729	{
2815	EV_FREQUENT_CHECK;	3730	EV_FREQUENT_CHECK;
		3731
		3732	clear_pending (EV_A_ (W)w);
2816		3733
2817	if (ev_is_active (w))	3734	if (ev_is_active (w))
2818	{	3735	{
2819	if (w->repeat)	3736	if (w->repeat)
2820	{	3737	{
…		…
2833		3750
2834	EV_FREQUENT_CHECK;	3751	EV_FREQUENT_CHECK;
2835	}	3752	}
2836		3753
2837	ev_tstamp	3754	ev_tstamp
2838	ev_timer_remaining (EV_P_ ev_timer *w)	3755	ev_timer_remaining (EV_P_ ev_timer *w) EV_THROW
2839	{	3756	{
2840	return ev_at (w) - (ev_is_active (w) ? mn_now : 0.);	3757	return ev_at (w) - (ev_is_active (w) ? mn_now : 0.);
2841	}	3758	}
2842		3759
2843	#if EV_PERIODIC_ENABLE	3760	#if EV_PERIODIC_ENABLE
2844	void noinline	3761	void noinline
2845	ev_periodic_start (EV_P_ ev_periodic *w)	3762	ev_periodic_start (EV_P_ ev_periodic *w) EV_THROW
2846	{	3763	{
2847	if (expect_false (ev_is_active (w)))	3764	if (expect_false (ev_is_active (w)))
2848	return;	3765	return;
2849		3766
2850	if (w->reschedule_cb)	3767	if (w->reschedule_cb)
…		…
2870		3787
2871	/*assert (("libev: internal periodic heap corruption", ANHE_w (periodics [ev_active (w)]) == (WT)w));*/	3788	/*assert (("libev: internal periodic heap corruption", ANHE_w (periodics [ev_active (w)]) == (WT)w));*/
2872	}	3789	}
2873		3790
2874	void noinline	3791	void noinline
2875	ev_periodic_stop (EV_P_ ev_periodic *w)	3792	ev_periodic_stop (EV_P_ ev_periodic *w) EV_THROW
2876	{	3793	{
2877	clear_pending (EV_A_ (W)w);	3794	clear_pending (EV_A_ (W)w);
2878	if (expect_false (!ev_is_active (w)))	3795	if (expect_false (!ev_is_active (w)))
2879	return;	3796	return;
2880		3797
…		…
2898		3815
2899	EV_FREQUENT_CHECK;	3816	EV_FREQUENT_CHECK;
2900	}	3817	}
2901		3818
2902	void noinline	3819	void noinline
2903	ev_periodic_again (EV_P_ ev_periodic *w)	3820	ev_periodic_again (EV_P_ ev_periodic *w) EV_THROW
2904	{	3821	{
2905	/* TODO: use adjustheap and recalculation */	3822	/* TODO: use adjustheap and recalculation */
2906	ev_periodic_stop (EV_A_ w);	3823	ev_periodic_stop (EV_A_ w);
2907	ev_periodic_start (EV_A_ w);	3824	ev_periodic_start (EV_A_ w);
2908	}	3825	}
…		…
2913	#endif	3830	#endif
2914		3831
2915	#if EV_SIGNAL_ENABLE	3832	#if EV_SIGNAL_ENABLE
2916		3833
2917	void noinline	3834	void noinline
2918	ev_signal_start (EV_P_ ev_signal *w)	3835	ev_signal_start (EV_P_ ev_signal *w) EV_THROW
2919	{	3836	{
2920	if (expect_false (ev_is_active (w)))	3837	if (expect_false (ev_is_active (w)))
2921	return;	3838	return;
2922		3839
2923	assert (("libev: ev_signal_start called with illegal signal number", w->signum > 0 && w->signum < EV_NSIG));	3840	assert (("libev: ev_signal_start called with illegal signal number", w->signum > 0 && w->signum < EV_NSIG));
…		…
2925	#if EV_MULTIPLICITY	3842	#if EV_MULTIPLICITY
2926	assert (("libev: a signal must not be attached to two different loops",	3843	assert (("libev: a signal must not be attached to two different loops",
2927	!signals [w->signum - 1].loop || signals [w->signum - 1].loop == loop));	3844	!signals [w->signum - 1].loop || signals [w->signum - 1].loop == loop));
2928		3845
2929	signals [w->signum - 1].loop = EV_A;	3846	signals [w->signum - 1].loop = EV_A;
		3847	ECB_MEMORY_FENCE_RELEASE;
2930	#endif	3848	#endif
2931		3849
2932	EV_FREQUENT_CHECK;	3850	EV_FREQUENT_CHECK;
2933		3851
2934	#if EV_USE_SIGNALFD	3852	#if EV_USE_SIGNALFD
…		…
2994		3912
2995	EV_FREQUENT_CHECK;	3913	EV_FREQUENT_CHECK;
2996	}	3914	}
2997		3915
2998	void noinline	3916	void noinline
2999	ev_signal_stop (EV_P_ ev_signal *w)	3917	ev_signal_stop (EV_P_ ev_signal *w) EV_THROW
3000	{	3918	{
3001	clear_pending (EV_A_ (W)w);	3919	clear_pending (EV_A_ (W)w);
3002	if (expect_false (!ev_is_active (w)))	3920	if (expect_false (!ev_is_active (w)))
3003	return;	3921	return;
3004		3922
…		…
3035	#endif	3953	#endif
3036		3954
3037	#if EV_CHILD_ENABLE	3955	#if EV_CHILD_ENABLE
3038		3956
3039	void	3957	void
3040	ev_child_start (EV_P_ ev_child *w)	3958	ev_child_start (EV_P_ ev_child *w) EV_THROW
3041	{	3959	{
3042	#if EV_MULTIPLICITY	3960	#if EV_MULTIPLICITY
3043	assert (("libev: child watchers are only supported in the default loop", loop == ev_default_loop_ptr));	3961	assert (("libev: child watchers are only supported in the default loop", loop == ev_default_loop_ptr));
3044	#endif	3962	#endif
3045	if (expect_false (ev_is_active (w)))	3963	if (expect_false (ev_is_active (w)))
…		…
3052		3970
3053	EV_FREQUENT_CHECK;	3971	EV_FREQUENT_CHECK;
3054	}	3972	}
3055		3973
3056	void	3974	void
3057	ev_child_stop (EV_P_ ev_child *w)	3975	ev_child_stop (EV_P_ ev_child *w) EV_THROW
3058	{	3976	{
3059	clear_pending (EV_A_ (W)w);	3977	clear_pending (EV_A_ (W)w);
3060	if (expect_false (!ev_is_active (w)))	3978	if (expect_false (!ev_is_active (w)))
3061	return;	3979	return;
3062		3980
…		…
3089	# define EV_INOTIFY_BUFSIZE (sizeof (struct inotify_event) * 2 + NAME_MAX)	4007	# define EV_INOTIFY_BUFSIZE (sizeof (struct inotify_event) * 2 + NAME_MAX)
3090		4008
3091	static void noinline	4009	static void noinline
3092	infy_add (EV_P_ ev_stat *w)	4010	infy_add (EV_P_ ev_stat *w)
3093	{	4011	{
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);	4012	w->wd = inotify_add_watch (fs_fd, w->path,
		4013	IN_ATTRIB | IN_DELETE_SELF | IN_MOVE_SELF | IN_MODIFY
		4014	| IN_CREATE | IN_DELETE | IN_MOVED_FROM | IN_MOVED_TO
		4015	| IN_DONT_FOLLOW | IN_MASK_ADD);
3095		4016
3096	if (w->wd >= 0)	4017	if (w->wd >= 0)
3097	{	4018	{
3098	struct statfs sfs;	4019	struct statfs sfs;
3099		4020
…		…
3103		4024
3104	if (!fs_2625)	4025	if (!fs_2625)
3105	w->timer.repeat = w->interval ? w->interval : DEF_STAT_INTERVAL;	4026	w->timer.repeat = w->interval ? w->interval : DEF_STAT_INTERVAL;
3106	else if (!statfs (w->path, &sfs)	4027	else if (!statfs (w->path, &sfs)
3107	&& (sfs.f_type == 0x1373 /* devfs */	4028	&& (sfs.f_type == 0x1373 /* devfs */
		4029	|| sfs.f_type == 0x4006 /* fat */
		4030	|| sfs.f_type == 0x4d44 /* msdos */
3108	|| sfs.f_type == 0xEF53 /* ext2/3 */	4031	|| sfs.f_type == 0xEF53 /* ext2/3 */
		4032	|| sfs.f_type == 0x72b6 /* jffs2 */
		4033	|| sfs.f_type == 0x858458f6 /* ramfs */
		4034	|| sfs.f_type == 0x5346544e /* ntfs */
3109	|| sfs.f_type == 0x3153464a /* jfs */	4035	|| sfs.f_type == 0x3153464a /* jfs */
		4036	|| sfs.f_type == 0x9123683e /* btrfs */
3110	|| sfs.f_type == 0x52654973 /* reiser3 */	4037	|| sfs.f_type == 0x52654973 /* reiser3 */
3111	|| sfs.f_type == 0x01021994 /* tempfs */	4038	|| sfs.f_type == 0x01021994 /* tmpfs */
3112	|| sfs.f_type == 0x58465342 /* xfs */))	4039	|| sfs.f_type == 0x58465342 /* xfs */))
3113	w->timer.repeat = 0.; /* filesystem is local, kernel new enough */	4040	w->timer.repeat = 0.; /* filesystem is local, kernel new enough */
3114	else	4041	else
3115	w->timer.repeat = w->interval ? w->interval : NFS_STAT_INTERVAL; /* remote, use reduced frequency */	4042	w->timer.repeat = w->interval ? w->interval : NFS_STAT_INTERVAL; /* remote, use reduced frequency */
3116	}	4043	}
…		…
3214	infy_wd (EV_A_ ev->wd, ev->wd, ev);	4141	infy_wd (EV_A_ ev->wd, ev->wd, ev);
3215	ofs += sizeof (struct inotify_event) + ev->len;	4142	ofs += sizeof (struct inotify_event) + ev->len;
3216	}	4143	}
3217	}	4144	}
3218		4145
3219	inline_size void	4146	inline_size void ecb_cold
3220	ev_check_2625 (EV_P)	4147	ev_check_2625 (EV_P)
3221	{	4148	{
3222	/* kernels < 2.6.25 are borked	4149	/* kernels < 2.6.25 are borked
3223	* http://www.ussg.indiana.edu/hypermail/linux/kernel/0711.3/1208.html	4150	* http://www.ussg.indiana.edu/hypermail/linux/kernel/0711.3/1208.html
3224	*/	4151	*/
…		…
3229	}	4156	}
3230		4157
3231	inline_size int	4158	inline_size int
3232	infy_newfd (void)	4159	infy_newfd (void)
3233	{	4160	{
3234	#if defined (IN_CLOEXEC) && defined (IN_NONBLOCK)	4161	#if defined IN_CLOEXEC && defined IN_NONBLOCK
3235	int fd = inotify_init1 (IN_CLOEXEC | IN_NONBLOCK);	4162	int fd = inotify_init1 (IN_CLOEXEC | IN_NONBLOCK);
3236	if (fd >= 0)	4163	if (fd >= 0)
3237	return fd;	4164	return fd;
3238	#endif	4165	#endif
3239	return inotify_init ();	4166	return inotify_init ();
…		…
3314	#else	4241	#else
3315	# define EV_LSTAT(p,b) lstat (p, b)	4242	# define EV_LSTAT(p,b) lstat (p, b)
3316	#endif	4243	#endif
3317		4244
3318	void	4245	void
3319	ev_stat_stat (EV_P_ ev_stat *w)	4246	ev_stat_stat (EV_P_ ev_stat *w) EV_THROW
3320	{	4247	{
3321	if (lstat (w->path, &w->attr) < 0)	4248	if (lstat (w->path, &w->attr) < 0)
3322	w->attr.st_nlink = 0;	4249	w->attr.st_nlink = 0;
3323	else if (!w->attr.st_nlink)	4250	else if (!w->attr.st_nlink)
3324	w->attr.st_nlink = 1;	4251	w->attr.st_nlink = 1;
…		…
3363	ev_feed_event (EV_A_ w, EV_STAT);	4290	ev_feed_event (EV_A_ w, EV_STAT);
3364	}	4291	}
3365	}	4292	}
3366		4293
3367	void	4294	void
3368	ev_stat_start (EV_P_ ev_stat *w)	4295	ev_stat_start (EV_P_ ev_stat *w) EV_THROW
3369	{	4296	{
3370	if (expect_false (ev_is_active (w)))	4297	if (expect_false (ev_is_active (w)))
3371	return;	4298	return;
3372		4299
3373	ev_stat_stat (EV_A_ w);	4300	ev_stat_stat (EV_A_ w);
…		…
3394		4321
3395	EV_FREQUENT_CHECK;	4322	EV_FREQUENT_CHECK;
3396	}	4323	}
3397		4324
3398	void	4325	void
3399	ev_stat_stop (EV_P_ ev_stat *w)	4326	ev_stat_stop (EV_P_ ev_stat *w) EV_THROW
3400	{	4327	{
3401	clear_pending (EV_A_ (W)w);	4328	clear_pending (EV_A_ (W)w);
3402	if (expect_false (!ev_is_active (w)))	4329	if (expect_false (!ev_is_active (w)))
3403	return;	4330	return;
3404		4331
…		…
3420	}	4347	}
3421	#endif	4348	#endif
3422		4349
3423	#if EV_IDLE_ENABLE	4350	#if EV_IDLE_ENABLE
3424	void	4351	void
3425	ev_idle_start (EV_P_ ev_idle *w)	4352	ev_idle_start (EV_P_ ev_idle *w) EV_THROW
3426	{	4353	{
3427	if (expect_false (ev_is_active (w)))	4354	if (expect_false (ev_is_active (w)))
3428	return;	4355	return;
3429		4356
3430	pri_adjust (EV_A_ (W)w);	4357	pri_adjust (EV_A_ (W)w);
…		…
3443		4370
3444	EV_FREQUENT_CHECK;	4371	EV_FREQUENT_CHECK;
3445	}	4372	}
3446		4373
3447	void	4374	void
3448	ev_idle_stop (EV_P_ ev_idle *w)	4375	ev_idle_stop (EV_P_ ev_idle *w) EV_THROW
3449	{	4376	{
3450	clear_pending (EV_A_ (W)w);	4377	clear_pending (EV_A_ (W)w);
3451	if (expect_false (!ev_is_active (w)))	4378	if (expect_false (!ev_is_active (w)))
3452	return;	4379	return;
3453		4380
…		…
3467	}	4394	}
3468	#endif	4395	#endif
3469		4396
3470	#if EV_PREPARE_ENABLE	4397	#if EV_PREPARE_ENABLE
3471	void	4398	void
3472	ev_prepare_start (EV_P_ ev_prepare *w)	4399	ev_prepare_start (EV_P_ ev_prepare *w) EV_THROW
3473	{	4400	{
3474	if (expect_false (ev_is_active (w)))	4401	if (expect_false (ev_is_active (w)))
3475	return;	4402	return;
3476		4403
3477	EV_FREQUENT_CHECK;	4404	EV_FREQUENT_CHECK;
…		…
3482		4409
3483	EV_FREQUENT_CHECK;	4410	EV_FREQUENT_CHECK;
3484	}	4411	}
3485		4412
3486	void	4413	void
3487	ev_prepare_stop (EV_P_ ev_prepare *w)	4414	ev_prepare_stop (EV_P_ ev_prepare *w) EV_THROW
3488	{	4415	{
3489	clear_pending (EV_A_ (W)w);	4416	clear_pending (EV_A_ (W)w);
3490	if (expect_false (!ev_is_active (w)))	4417	if (expect_false (!ev_is_active (w)))
3491	return;	4418	return;
3492		4419
…		…
3505	}	4432	}
3506	#endif	4433	#endif
3507		4434
3508	#if EV_CHECK_ENABLE	4435	#if EV_CHECK_ENABLE
3509	void	4436	void
3510	ev_check_start (EV_P_ ev_check *w)	4437	ev_check_start (EV_P_ ev_check *w) EV_THROW
3511	{	4438	{
3512	if (expect_false (ev_is_active (w)))	4439	if (expect_false (ev_is_active (w)))
3513	return;	4440	return;
3514		4441
3515	EV_FREQUENT_CHECK;	4442	EV_FREQUENT_CHECK;
…		…
3520		4447
3521	EV_FREQUENT_CHECK;	4448	EV_FREQUENT_CHECK;
3522	}	4449	}
3523		4450
3524	void	4451	void
3525	ev_check_stop (EV_P_ ev_check *w)	4452	ev_check_stop (EV_P_ ev_check *w) EV_THROW
3526	{	4453	{
3527	clear_pending (EV_A_ (W)w);	4454	clear_pending (EV_A_ (W)w);
3528	if (expect_false (!ev_is_active (w)))	4455	if (expect_false (!ev_is_active (w)))
3529	return;	4456	return;
3530		4457
…		…
3543	}	4470	}
3544	#endif	4471	#endif
3545		4472
3546	#if EV_EMBED_ENABLE	4473	#if EV_EMBED_ENABLE
3547	void noinline	4474	void noinline
3548	ev_embed_sweep (EV_P_ ev_embed *w)	4475	ev_embed_sweep (EV_P_ ev_embed *w) EV_THROW
3549	{	4476	{
3550	ev_run (w->other, EVRUN_NOWAIT);	4477	ev_run (w->other, EVRUN_NOWAIT);
3551	}	4478	}
3552		4479
3553	static void	4480	static void
…		…
3601	ev_idle_stop (EV_A_ idle);	4528	ev_idle_stop (EV_A_ idle);
3602	}	4529	}
3603	#endif	4530	#endif
3604		4531
3605	void	4532	void
3606	ev_embed_start (EV_P_ ev_embed *w)	4533	ev_embed_start (EV_P_ ev_embed *w) EV_THROW
3607	{	4534	{
3608	if (expect_false (ev_is_active (w)))	4535	if (expect_false (ev_is_active (w)))
3609	return;	4536	return;
3610		4537
3611	{	4538	{
…		…
3632		4559
3633	EV_FREQUENT_CHECK;	4560	EV_FREQUENT_CHECK;
3634	}	4561	}
3635		4562
3636	void	4563	void
3637	ev_embed_stop (EV_P_ ev_embed *w)	4564	ev_embed_stop (EV_P_ ev_embed *w) EV_THROW
3638	{	4565	{
3639	clear_pending (EV_A_ (W)w);	4566	clear_pending (EV_A_ (W)w);
3640	if (expect_false (!ev_is_active (w)))	4567	if (expect_false (!ev_is_active (w)))
3641	return;	4568	return;
3642		4569
…		…
3652	}	4579	}
3653	#endif	4580	#endif
3654		4581
3655	#if EV_FORK_ENABLE	4582	#if EV_FORK_ENABLE
3656	void	4583	void
3657	ev_fork_start (EV_P_ ev_fork *w)	4584	ev_fork_start (EV_P_ ev_fork *w) EV_THROW
3658	{	4585	{
3659	if (expect_false (ev_is_active (w)))	4586	if (expect_false (ev_is_active (w)))
3660	return;	4587	return;
3661		4588
3662	EV_FREQUENT_CHECK;	4589	EV_FREQUENT_CHECK;
…		…
3667		4594
3668	EV_FREQUENT_CHECK;	4595	EV_FREQUENT_CHECK;
3669	}	4596	}
3670		4597
3671	void	4598	void
3672	ev_fork_stop (EV_P_ ev_fork *w)	4599	ev_fork_stop (EV_P_ ev_fork *w) EV_THROW
3673	{	4600	{
3674	clear_pending (EV_A_ (W)w);	4601	clear_pending (EV_A_ (W)w);
3675	if (expect_false (!ev_is_active (w)))	4602	if (expect_false (!ev_is_active (w)))
3676	return;	4603	return;
3677		4604
…		…
3690	}	4617	}
3691	#endif	4618	#endif
3692		4619
3693	#if EV_CLEANUP_ENABLE	4620	#if EV_CLEANUP_ENABLE
3694	void	4621	void
3695	ev_cleanup_start (EV_P_ ev_cleanup *w)	4622	ev_cleanup_start (EV_P_ ev_cleanup *w) EV_THROW
3696	{	4623	{
3697	if (expect_false (ev_is_active (w)))	4624	if (expect_false (ev_is_active (w)))
3698	return;	4625	return;
3699		4626
3700	EV_FREQUENT_CHECK;	4627	EV_FREQUENT_CHECK;
…		…
3707	ev_unref (EV_A);	4634	ev_unref (EV_A);
3708	EV_FREQUENT_CHECK;	4635	EV_FREQUENT_CHECK;
3709	}	4636	}
3710		4637
3711	void	4638	void
3712	ev_cleanup_stop (EV_P_ ev_cleanup *w)	4639	ev_cleanup_stop (EV_P_ ev_cleanup *w) EV_THROW
3713	{	4640	{
3714	clear_pending (EV_A_ (W)w);	4641	clear_pending (EV_A_ (W)w);
3715	if (expect_false (!ev_is_active (w)))	4642	if (expect_false (!ev_is_active (w)))
3716	return;	4643	return;
3717		4644
…		…
3731	}	4658	}
3732	#endif	4659	#endif
3733		4660
3734	#if EV_ASYNC_ENABLE	4661	#if EV_ASYNC_ENABLE
3735	void	4662	void
3736	ev_async_start (EV_P_ ev_async *w)	4663	ev_async_start (EV_P_ ev_async *w) EV_THROW
3737	{	4664	{
3738	if (expect_false (ev_is_active (w)))	4665	if (expect_false (ev_is_active (w)))
3739	return;	4666	return;
3740		4667
3741	w->sent = 0;	4668	w->sent = 0;
…		…
3750		4677
3751	EV_FREQUENT_CHECK;	4678	EV_FREQUENT_CHECK;
3752	}	4679	}
3753		4680
3754	void	4681	void
3755	ev_async_stop (EV_P_ ev_async *w)	4682	ev_async_stop (EV_P_ ev_async *w) EV_THROW
3756	{	4683	{
3757	clear_pending (EV_A_ (W)w);	4684	clear_pending (EV_A_ (W)w);
3758	if (expect_false (!ev_is_active (w)))	4685	if (expect_false (!ev_is_active (w)))
3759	return;	4686	return;
3760		4687
…		…
3771		4698
3772	EV_FREQUENT_CHECK;	4699	EV_FREQUENT_CHECK;
3773	}	4700	}
3774		4701
3775	void	4702	void
3776	ev_async_send (EV_P_ ev_async *w)	4703	ev_async_send (EV_P_ ev_async *w) EV_THROW
3777	{	4704	{
3778	w->sent = 1;	4705	w->sent = 1;
3779	evpipe_write (EV_A_ &async_pending);	4706	evpipe_write (EV_A_ &async_pending);
3780	}	4707	}
3781	#endif	4708	#endif
…		…
3818		4745
3819	once_cb (EV_A_ once, revents | ev_clear_pending (EV_A_ &once->io));	4746	once_cb (EV_A_ once, revents | ev_clear_pending (EV_A_ &once->io));
3820	}	4747	}
3821		4748
3822	void	4749	void
3823	ev_once (EV_P_ int fd, int events, ev_tstamp timeout, void (*cb)(int revents, void *arg), void *arg)	4750	ev_once (EV_P_ int fd, int events, ev_tstamp timeout, void (*cb)(int revents, void *arg), void *arg) EV_THROW
3824	{	4751	{
3825	struct ev_once *once = (struct ev_once *)ev_malloc (sizeof (struct ev_once));	4752	struct ev_once *once = (struct ev_once *)ev_malloc (sizeof (struct ev_once));
3826		4753
3827	if (expect_false (!once))	4754	if (expect_false (!once))
3828	{	4755	{
…		…
3849	}	4776	}
3850		4777
3851	/*****************************************************************************/	4778	/*****************************************************************************/
3852		4779
3853	#if EV_WALK_ENABLE	4780	#if EV_WALK_ENABLE
3854	void	4781	void ecb_cold
3855	ev_walk (EV_P_ int types, void (*cb)(EV_P_ int type, void *w))	4782	ev_walk (EV_P_ int types, void (*cb)(EV_P_ int type, void *w)) EV_THROW
3856	{	4783	{
3857	int i, j;	4784	int i, j;
3858	ev_watcher_list *wl, *wn;	4785	ev_watcher_list *wl, *wn;
3859		4786
3860	if (types & (EV_IO | EV_EMBED))	4787	if (types & (EV_IO | EV_EMBED))
…		…
3903	cb (EV_A_ EV_PERIODIC, ANHE_w (periodics [i]));	4830	cb (EV_A_ EV_PERIODIC, ANHE_w (periodics [i]));
3904	#endif	4831	#endif
3905		4832
3906	#if EV_IDLE_ENABLE	4833	#if EV_IDLE_ENABLE
3907	if (types & EV_IDLE)	4834	if (types & EV_IDLE)
3908	for (j = NUMPRI; i--; )	4835	for (j = NUMPRI; j--; )
3909	for (i = idlecnt [j]; i--; )	4836	for (i = idlecnt [j]; i--; )
3910	cb (EV_A_ EV_IDLE, idles [j][i]);	4837	cb (EV_A_ EV_IDLE, idles [j][i]);
3911	#endif	4838	#endif
3912		4839
3913	#if EV_FORK_ENABLE	4840	#if EV_FORK_ENABLE
…		…
3966		4893
3967	#if EV_MULTIPLICITY	4894	#if EV_MULTIPLICITY
3968	#include "ev_wrap.h"	4895	#include "ev_wrap.h"
3969	#endif	4896	#endif
3970		4897
3971	EV_CPP(})
3972

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