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Comparing libev/ev.c (file contents):
Revision 1.343 by root, Fri Apr 2 21:03:46 2010 UTC vs.
Revision 1.391 by root, Thu Aug 4 13:57:16 2011 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 Marc Alexander Lehmann <libev@schmorp.de>	4	* Copyright (c) 2007,2008,2009,2010,2011 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	*
10	* 1. Redistributions of source code must retain the above copyright notice,	10	* 1. Redistributions of source code must retain the above copyright notice,
11	* this list of conditions and the following disclaimer.	11	* this list of conditions and the following disclaimer.
12	*	12	*
13	* 2. Redistributions in binary form must reproduce the above copyright	13	* 2. Redistributions in binary form must reproduce the above copyright
14	* notice, this list of conditions and the following disclaimer in the	14	* notice, this list of conditions and the following disclaimer in the
15	* documentation and/or other materials provided with the distribution.	15	* documentation and/or other materials provided with the distribution.
16	*	16	*
17	* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR IMPLIED	17	* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR IMPLIED
18	* WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MER-	18	* WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MER-
19	* CHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO	19	* CHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO
20	* EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPE-	20	* EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPE-
21	* CIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,	21	* CIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
…		…
35	* and other provisions required by the GPL. If you do not delete the	35	* and other provisions required by the GPL. If you do not delete the
36	* provisions above, a recipient may use your version of this file under	36	* provisions above, a recipient may use your version of this file under
37	* either the BSD or the GPL.	37	* either the BSD or the GPL.
38	*/	38	*/
39		39
40	#ifdef __cplusplus
41	extern "C" {
42	#endif
43
44	/* this big block deduces configuration from config.h */	40	/* this big block deduces configuration from config.h */
45	#ifndef EV_STANDALONE	41	#ifndef EV_STANDALONE
46	# ifdef EV_CONFIG_H	42	# ifdef EV_CONFIG_H
47	# include EV_CONFIG_H	43	# include EV_CONFIG_H
48	# else	44	# else
49	# include "config.h"	45	# include "config.h"
50	# endif	46	# endif
		47
		48	#if HAVE_FLOOR
		49	# ifndef EV_USE_FLOOR
		50	# define EV_USE_FLOOR 1
		51	# endif
		52	#endif
51		53
52	# if HAVE_CLOCK_SYSCALL	54	# if HAVE_CLOCK_SYSCALL
53	# ifndef EV_USE_CLOCK_SYSCALL	55	# ifndef EV_USE_CLOCK_SYSCALL
54	# define EV_USE_CLOCK_SYSCALL 1	56	# define EV_USE_CLOCK_SYSCALL 1
55	# ifndef EV_USE_REALTIME	57	# ifndef EV_USE_REALTIME
…		…
160	# define EV_USE_EVENTFD 0	162	# define EV_USE_EVENTFD 0
161	# endif	163	# endif
162		164
163	#endif	165	#endif
164		166
165	#include <math.h>
166	#include <stdlib.h>	167	#include <stdlib.h>
167	#include <string.h>	168	#include <string.h>
168	#include <fcntl.h>	169	#include <fcntl.h>
169	#include <stddef.h>	170	#include <stddef.h>
170		171
…		…
181	#ifdef EV_H	182	#ifdef EV_H
182	# include EV_H	183	# include EV_H
183	#else	184	#else
184	# include "ev.h"	185	# include "ev.h"
185	#endif	186	#endif
		187
		188	EV_CPP(extern "C" {)
186		189
187	#ifndef _WIN32	190	#ifndef _WIN32
188	# include <sys/time.h>	191	# include <sys/time.h>
189	# include <sys/wait.h>	192	# include <sys/wait.h>
190	# include <unistd.h>	193	# include <unistd.h>
…		…
195	# ifndef EV_SELECT_IS_WINSOCKET	198	# ifndef EV_SELECT_IS_WINSOCKET
196	# define EV_SELECT_IS_WINSOCKET 1	199	# define EV_SELECT_IS_WINSOCKET 1
197	# endif	200	# endif
198	# undef EV_AVOID_STDIO	201	# undef EV_AVOID_STDIO
199	#endif	202	#endif
		203
		204	/* OS X, in its infinite idiocy, actually HARDCODES
		205	* a limit of 1024 into their select. Where people have brains,
		206	* OS X engineers apparently have a vacuum. Or maybe they were
		207	* ordered to have a vacuum, or they do anything for money.
		208	* This might help. Or not.
		209	*/
		210	#define _DARWIN_UNLIMITED_SELECT 1
200		211
201	/* this block tries to deduce configuration from header-defined symbols and defaults */	212	/* this block tries to deduce configuration from header-defined symbols and defaults */
202		213
203	/* try to deduce the maximum number of signals on this platform */	214	/* try to deduce the maximum number of signals on this platform */
204	#if defined (EV_NSIG)	215	#if defined (EV_NSIG)
…		…
226	/* to make it compile regardless, just remove the above line, */	237	/* to make it compile regardless, just remove the above line, */
227	/* but consider reporting it, too! :) */	238	/* but consider reporting it, too! :) */
228	# define EV_NSIG 65	239	# define EV_NSIG 65
229	#endif	240	#endif
230		241
		242	#ifndef EV_USE_FLOOR
		243	# define EV_USE_FLOOR 0
		244	#endif
		245
231	#ifndef EV_USE_CLOCK_SYSCALL	246	#ifndef EV_USE_CLOCK_SYSCALL
232	# if __linux && __GLIBC__ >= 2	247	# if __linux && __GLIBC__ >= 2
233	# define EV_USE_CLOCK_SYSCALL EV_FEATURE_OS	248	# define EV_USE_CLOCK_SYSCALL EV_FEATURE_OS
234	# else	249	# else
235	# define EV_USE_CLOCK_SYSCALL 0	250	# define EV_USE_CLOCK_SYSCALL 0
…		…
370	# undef EV_USE_INOTIFY	385	# undef EV_USE_INOTIFY
371	# define EV_USE_INOTIFY 0	386	# define EV_USE_INOTIFY 0
372	#endif	387	#endif
373		388
374	#if !EV_USE_NANOSLEEP	389	#if !EV_USE_NANOSLEEP
375	# ifndef _WIN32	390	/* hp-ux has it in sys/time.h, which we unconditionally include above */
		391	# if !defined(_WIN32) && !defined(__hpux)
376	# include <sys/select.h>	392	# include <sys/select.h>
377	# endif	393	# endif
378	#endif	394	#endif
379		395
380	#if EV_USE_INOTIFY	396	#if EV_USE_INOTIFY
381	# include <sys/utsname.h>
382	# include <sys/statfs.h>	397	# include <sys/statfs.h>
383	# include <sys/inotify.h>	398	# include <sys/inotify.h>
384	/* some very old inotify.h headers don't have IN_DONT_FOLLOW */	399	/* some very old inotify.h headers don't have IN_DONT_FOLLOW */
385	# ifndef IN_DONT_FOLLOW	400	# ifndef IN_DONT_FOLLOW
386	# undef EV_USE_INOTIFY	401	# undef EV_USE_INOTIFY
…		…
403	# define EFD_CLOEXEC O_CLOEXEC	418	# define EFD_CLOEXEC O_CLOEXEC
404	# else	419	# else
405	# define EFD_CLOEXEC 02000000	420	# define EFD_CLOEXEC 02000000
406	# endif	421	# endif
407	# endif	422	# endif
408	# ifdef __cplusplus
409	extern "C" {
410	# endif
411	int (eventfd) (unsigned int initval, int flags);	423	EV_CPP(extern "C") int (eventfd) (unsigned int initval, int flags);
412	# ifdef __cplusplus
413	}
414	# endif
415	#endif	424	#endif
416		425
417	#if EV_USE_SIGNALFD	426	#if EV_USE_SIGNALFD
418	/* our minimum requirement is glibc 2.7 which has the stub, but not the header */	427	/* our minimum requirement is glibc 2.7 which has the stub, but not the header */
419	# include <stdint.h>	428	# include <stdint.h>
…		…
425	# define SFD_CLOEXEC O_CLOEXEC	434	# define SFD_CLOEXEC O_CLOEXEC
426	# else	435	# else
427	# define SFD_CLOEXEC 02000000	436	# define SFD_CLOEXEC 02000000
428	# endif	437	# endif
429	# endif	438	# endif
430	# ifdef __cplusplus
431	extern "C" {
432	# endif
433	int signalfd (int fd, const sigset_t *mask, int flags);	439	EV_CPP (extern "C") int signalfd (int fd, const sigset_t *mask, int flags);
434		440
435	struct signalfd_siginfo	441	struct signalfd_siginfo
436	{	442	{
437	uint32_t ssi_signo;	443	uint32_t ssi_signo;
438	char pad[128 - sizeof (uint32_t)];	444	char pad[128 - sizeof (uint32_t)];
439	};	445	};
440	# ifdef __cplusplus
441	}
442	# endif	446	#endif
443	#endif
444
445		447
446	/**/	448	/**/
447		449
448	#if EV_VERIFY >= 3	450	#if EV_VERIFY >= 3
449	# define EV_FREQUENT_CHECK ev_verify (EV_A)	451	# define EV_FREQUENT_CHECK ev_verify (EV_A)
450	#else	452	#else
451	# define EV_FREQUENT_CHECK do { } while (0)	453	# define EV_FREQUENT_CHECK do { } while (0)
452	#endif	454	#endif
453		455
454	/*	456	/*
455	* This is used to avoid floating point rounding problems.	457	* This is used to work around floating point rounding problems.
456	* It is added to ev_rt_now when scheduling periodics
457	* to ensure progress, time-wise, even when rounding
458	* errors are against us.
459	* This value is good at least till the year 4000.	458	* This value is good at least till the year 4000.
460	* Better solutions welcome.
461	*/	459	*/
462	#define TIME_EPSILON 0.0001220703125 /* 1/8192 */	460	#define MIN_INTERVAL 0.0001220703125 /* 1/2**13, good till 4000 */
		461	/*#define MIN_INTERVAL 0.00000095367431640625 /* 1/2**20, good till 2200 */
463		462
464	#define MIN_TIMEJUMP 1. /* minimum timejump that gets detected (if monotonic clock available) */	463	#define MIN_TIMEJUMP 1. /* minimum timejump that gets detected (if monotonic clock available) */
465	#define MAX_BLOCKTIME 59.743 /* never wait longer than this time (to detect time jumps) */	464	#define MAX_BLOCKTIME 59.743 /* never wait longer than this time (to detect time jumps) */
466		465
		466	#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)
		468
		469	/* the following is ecb.h embedded into libev - use update_ev_c to update from an external copy */
		470	/* ECB.H BEGIN */
		471	/*
		472	* libecb - http://software.schmorp.de/pkg/libecb
		473	*
		474	* Copyright (©) 2009-2011 Marc Alexander Lehmann <libecb@schmorp.de>
		475	* Copyright (©) 2011 Emanuele Giaquinta
		476	* All rights reserved.
		477	*
		478	* Redistribution and use in source and binary forms, with or without modifica-
		479	* tion, are permitted provided that the following conditions are met:
		480	*
		481	* 1. Redistributions of source code must retain the above copyright notice,
		482	* this list of conditions and the following disclaimer.
		483	*
		484	* 2. Redistributions in binary form must reproduce the above copyright
		485	* notice, this list of conditions and the following disclaimer in the
		486	* documentation and/or other materials provided with the distribution.
		487	*
		488	* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR IMPLIED
		489	* WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MER-
		490	* CHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO
		491	* EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPE-
		492	* CIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
		493	* PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS;
		494	* OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
		495	* WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTH-
		496	* ERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
		497	* OF THE POSSIBILITY OF SUCH DAMAGE.
		498	*/
		499
		500	#ifndef ECB_H
		501	#define ECB_H
		502
		503	#ifdef _WIN32
		504	typedef signed char int8_t;
		505	typedef unsigned char uint8_t;
		506	typedef signed short int16_t;
		507	typedef unsigned short uint16_t;
		508	typedef signed int int32_t;
		509	typedef unsigned int uint32_t;
467	#if __GNUC__ >= 4	510	#if __GNUC__
468	# define expect(expr,value) __builtin_expect ((expr),(value))	511	typedef signed long long int64_t;
469	# define noinline __attribute__ ((noinline))	512	typedef unsigned long long uint64_t;
		513	#else /* _MSC_VER || __BORLANDC__ */
		514	typedef signed __int64 int64_t;
		515	typedef unsigned __int64 uint64_t;
		516	#endif
470	#else	517	#else
471	# define expect(expr,value) (expr)	518	#include <inttypes.h>
472	# define noinline
473	# if __STDC_VERSION__ < 199901L && __GNUC__ < 2
474	# define inline
475	# endif	519	#endif
		520
		521	/* many compilers define _GNUC_ to some versions but then only implement
		522	* what their idiot authors think are the "more important" extensions,
		523	* causing enormous grief in return for some better fake benchmark numbers.
		524	* or so.
		525	* we try to detect these and simply assume they are not gcc - if they have
		526	* an issue with that they should have done it right in the first place.
		527	*/
		528	#ifndef ECB_GCC_VERSION
		529	#if !defined(__GNUC_MINOR__) || defined(__INTEL_COMPILER) || defined(__SUNPRO_C) || defined(__SUNPRO_CC) || defined(__llvm__) || defined(__clang__)
		530	#define ECB_GCC_VERSION(major,minor) 0
		531	#else
		532	#define ECB_GCC_VERSION(major,minor) (__GNUC__ > (major) || (__GNUC__ == (major) && __GNUC_MINOR__ >= (minor)))
476	#endif	533	#endif
		534	#endif
477		535
		536	/*****************************************************************************/
		537
		538	/* ECB_NO_THREADS - ecb is not used by multiple threads, ever */
		539	/* ECB_NO_SMP - ecb might be used in multiple threads, but only on a single cpu */
		540
		541	#if ECB_NO_THREADS || ECB_NO_SMP
		542	#define ECB_MEMORY_FENCE do { } while (0)
		543	#define ECB_MEMORY_FENCE_ACQUIRE do { } while (0)
		544	#define ECB_MEMORY_FENCE_RELEASE do { } while (0)
		545	#endif
		546
		547	#ifndef ECB_MEMORY_FENCE
		548	#if ECB_GCC_VERSION(2,5)
		549	#if __x86
		550	#define ECB_MEMORY_FENCE __asm__ __volatile__ ("lock; orb $0, -1(%%esp)" : : : "memory")
		551	#define ECB_MEMORY_FENCE_ACQUIRE ECB_MEMORY_FENCE /* non-lock xchg might be enough */
		552	#define ECB_MEMORY_FENCE_RELEASE do { } while (0) /* unlikely to change in future cpus */
		553	#elif __amd64
		554	#define ECB_MEMORY_FENCE __asm__ __volatile__ ("mfence" : : : "memory")
		555	#define ECB_MEMORY_FENCE_ACQUIRE __asm__ __volatile__ ("lfence" : : : "memory")
		556	#define ECB_MEMORY_FENCE_RELEASE __asm__ __volatile__ ("sfence") /* play safe - not needed in any current cpu */
		557	#endif
		558	#endif
		559	#endif
		560
		561	#ifndef ECB_MEMORY_FENCE
		562	#if ECB_GCC_VERSION(4,4)
		563	#define ECB_MEMORY_FENCE __sync_synchronize ()
		564	#define ECB_MEMORY_FENCE_ACQUIRE ({ char dummy = 0; __sync_lock_test_and_set (&dummy, 1); })
		565	#define ECB_MEMORY_FENCE_RELEASE ({ char dummy = 1; __sync_lock_release (&dummy ); })
		566	#elif _MSC_VER >= 1400 /* VC++ 2005 */
		567	#pragma intrinsic(_ReadBarrier,_WriteBarrier,_ReadWriteBarrier)
		568	#define ECB_MEMORY_FENCE _ReadWriteBarrier ()
		569	#define ECB_MEMORY_FENCE_ACQUIRE _ReadWriteBarrier () /* according to msdn, _ReadBarrier is not a load fence */
		570	#define ECB_MEMORY_FENCE_RELEASE _WriteBarrier ()
		571	#elif defined(_WIN32)
		572	#include <WinNT.h>
		573	#define ECB_MEMORY_FENCE MemoryBarrier () /* actually just xchg on x86... scary */
		574	#define ECB_MEMORY_FENCE_ACQUIRE ECB_MEMORY_FENCE
		575	#define ECB_MEMORY_FENCE_RELEASE ECB_MEMORY_FENCE
		576	#endif
		577	#endif
		578
		579	#ifndef ECB_MEMORY_FENCE
		580	/*
		581	* if you get undefined symbol references to pthread_mutex_lock,
		582	* or failure to find pthread.h, then you should implement
		583	* the ECB_MEMORY_FENCE operations for your cpu/compiler
		584	* OR provide pthread.h and link against the posix thread library
		585	* of your system.
		586	*/
		587	#include <pthread.h>
		588	#define ECB_NEEDS_PTHREADS 1
		589	#define ECB_MEMORY_FENCE_NEEDS_PTHREADS 1
		590
		591	static pthread_mutex_t ecb_mf_lock = PTHREAD_MUTEX_INITIALIZER;
		592	#define ECB_MEMORY_FENCE do { pthread_mutex_lock (&ecb_mf_lock); pthread_mutex_unlock (&ecb_mf_lock); } while (0)
		593	#define ECB_MEMORY_FENCE_ACQUIRE ECB_MEMORY_FENCE
		594	#define ECB_MEMORY_FENCE_RELEASE ECB_MEMORY_FENCE
		595	#endif
		596
		597	/*****************************************************************************/
		598
		599	#define ECB_C99 (__STDC_VERSION__ >= 199901L)
		600
		601	#if __cplusplus
		602	#define ecb_inline static inline
		603	#elif ECB_GCC_VERSION(2,5)
		604	#define ecb_inline static __inline__
		605	#elif ECB_C99
		606	#define ecb_inline static inline
		607	#else
		608	#define ecb_inline static
		609	#endif
		610
		611	#if ECB_GCC_VERSION(3,3)
		612	#define ecb_restrict __restrict__
		613	#elif ECB_C99
		614	#define ecb_restrict restrict
		615	#else
		616	#define ecb_restrict
		617	#endif
		618
		619	typedef int ecb_bool;
		620
		621	#define ECB_CONCAT_(a, b) a ## b
		622	#define ECB_CONCAT(a, b) ECB_CONCAT_(a, b)
		623	#define ECB_STRINGIFY_(a) # a
		624	#define ECB_STRINGIFY(a) ECB_STRINGIFY_(a)
		625
		626	#define ecb_function_ ecb_inline
		627
		628	#if ECB_GCC_VERSION(3,1)
		629	#define ecb_attribute(attrlist) __attribute__(attrlist)
		630	#define ecb_is_constant(expr) __builtin_constant_p (expr)
		631	#define ecb_expect(expr,value) __builtin_expect ((expr),(value))
		632	#define ecb_prefetch(addr,rw,locality) __builtin_prefetch (addr, rw, locality)
		633	#else
		634	#define ecb_attribute(attrlist)
		635	#define ecb_is_constant(expr) 0
		636	#define ecb_expect(expr,value) (expr)
		637	#define ecb_prefetch(addr,rw,locality)
		638	#endif
		639
		640	/* no emulation for ecb_decltype */
		641	#if ECB_GCC_VERSION(4,5)
		642	#define ecb_decltype(x) __decltype(x)
		643	#elif ECB_GCC_VERSION(3,0)
		644	#define ecb_decltype(x) __typeof(x)
		645	#endif
		646
		647	#define ecb_noinline ecb_attribute ((__noinline__))
		648	#define ecb_noreturn ecb_attribute ((__noreturn__))
		649	#define ecb_unused ecb_attribute ((__unused__))
		650	#define ecb_const ecb_attribute ((__const__))
		651	#define ecb_pure ecb_attribute ((__pure__))
		652
		653	#if ECB_GCC_VERSION(4,3)
		654	#define ecb_artificial ecb_attribute ((__artificial__))
		655	#define ecb_hot ecb_attribute ((__hot__))
		656	#define ecb_cold ecb_attribute ((__cold__))
		657	#else
		658	#define ecb_artificial
		659	#define ecb_hot
		660	#define ecb_cold
		661	#endif
		662
		663	/* put around conditional expressions if you are very sure that the */
		664	/* expression is mostly true or mostly false. note that these return */
		665	/* booleans, not the expression. */
478	#define expect_false(expr) expect ((expr) != 0, 0)	666	#define ecb_expect_false(expr) ecb_expect (!!(expr), 0)
479	#define expect_true(expr) expect ((expr) != 0, 1)	667	#define ecb_expect_true(expr) ecb_expect (!!(expr), 1)
		668	/* for compatibility to the rest of the world */
		669	#define ecb_likely(expr) ecb_expect_true (expr)
		670	#define ecb_unlikely(expr) ecb_expect_false (expr)
		671
		672	/* count trailing zero bits and count # of one bits */
		673	#if ECB_GCC_VERSION(3,4)
		674	/* we assume int == 32 bit, long == 32 or 64 bit and long long == 64 bit */
		675	#define ecb_ld32(x) (__builtin_clz (x) ^ 31)
		676	#define ecb_ld64(x) (__builtin_clzll (x) ^ 63)
		677	#define ecb_ctz32(x) __builtin_ctz (x)
		678	#define ecb_ctz64(x) __builtin_ctzll (x)
		679	#define ecb_popcount32(x) __builtin_popcount (x)
		680	/* no popcountll */
		681	#else
		682	ecb_function_ int ecb_ctz32 (uint32_t x) ecb_const;
		683	ecb_function_ int
		684	ecb_ctz32 (uint32_t x)
		685	{
		686	int r = 0;
		687
		688	x &= ~x + 1; /* this isolates the lowest bit */
		689
		690	#if ECB_branchless_on_i386
		691	r += !!(x & 0xaaaaaaaa) << 0;
		692	r += !!(x & 0xcccccccc) << 1;
		693	r += !!(x & 0xf0f0f0f0) << 2;
		694	r += !!(x & 0xff00ff00) << 3;
		695	r += !!(x & 0xffff0000) << 4;
		696	#else
		697	if (x & 0xaaaaaaaa) r += 1;
		698	if (x & 0xcccccccc) r += 2;
		699	if (x & 0xf0f0f0f0) r += 4;
		700	if (x & 0xff00ff00) r += 8;
		701	if (x & 0xffff0000) r += 16;
		702	#endif
		703
		704	return r;
		705	}
		706
		707	ecb_function_ int ecb_ctz64 (uint64_t x) ecb_const;
		708	ecb_function_ int
		709	ecb_ctz64 (uint64_t x)
		710	{
		711	int shift = x & 0xffffffffU ? 0 : 32;
		712	return ecb_ctz32 (x >> shift) + shift;
		713	}
		714
		715	ecb_function_ int ecb_popcount32 (uint32_t x) ecb_const;
		716	ecb_function_ int
		717	ecb_popcount32 (uint32_t x)
		718	{
		719	x -= (x >> 1) & 0x55555555;
		720	x = ((x >> 2) & 0x33333333) + (x & 0x33333333);
		721	x = ((x >> 4) + x) & 0x0f0f0f0f;
		722	x *= 0x01010101;
		723
		724	return x >> 24;
		725	}
		726
		727	ecb_function_ int ecb_ld32 (uint32_t x) ecb_const;
		728	ecb_function_ int ecb_ld32 (uint32_t x)
		729	{
		730	int r = 0;
		731
		732	if (x >> 16) { x >>= 16; r += 16; }
		733	if (x >> 8) { x >>= 8; r += 8; }
		734	if (x >> 4) { x >>= 4; r += 4; }
		735	if (x >> 2) { x >>= 2; r += 2; }
		736	if (x >> 1) { r += 1; }
		737
		738	return r;
		739	}
		740
		741	ecb_function_ int ecb_ld64 (uint64_t x) ecb_const;
		742	ecb_function_ int ecb_ld64 (uint64_t x)
		743	{
		744	int r = 0;
		745
		746	if (x >> 32) { x >>= 32; r += 32; }
		747
		748	return r + ecb_ld32 (x);
		749	}
		750	#endif
		751
		752	/* popcount64 is only available on 64 bit cpus as gcc builtin */
		753	/* so for this version we are lazy */
		754	ecb_function_ int ecb_popcount64 (uint64_t x) ecb_const;
		755	ecb_function_ int
		756	ecb_popcount64 (uint64_t x)
		757	{
		758	return ecb_popcount32 (x) + ecb_popcount32 (x >> 32);
		759	}
		760
		761	ecb_inline uint8_t ecb_rotl8 (uint8_t x, unsigned int count) ecb_const;
		762	ecb_inline uint8_t ecb_rotr8 (uint8_t x, unsigned int count) ecb_const;
		763	ecb_inline uint16_t ecb_rotl16 (uint16_t x, unsigned int count) ecb_const;
		764	ecb_inline uint16_t ecb_rotr16 (uint16_t x, unsigned int count) ecb_const;
		765	ecb_inline uint32_t ecb_rotl32 (uint32_t x, unsigned int count) ecb_const;
		766	ecb_inline uint32_t ecb_rotr32 (uint32_t x, unsigned int count) ecb_const;
		767	ecb_inline uint64_t ecb_rotl64 (uint64_t x, unsigned int count) ecb_const;
		768	ecb_inline uint64_t ecb_rotr64 (uint64_t x, unsigned int count) ecb_const;
		769
		770	ecb_inline uint8_t ecb_rotl8 (uint8_t x, unsigned int count) { return (x >> ( 8 - count)) | (x << count); }
		771	ecb_inline uint8_t ecb_rotr8 (uint8_t x, unsigned int count) { return (x << ( 8 - count)) | (x >> count); }
		772	ecb_inline uint16_t ecb_rotl16 (uint16_t x, unsigned int count) { return (x >> (16 - count)) | (x << count); }
		773	ecb_inline uint16_t ecb_rotr16 (uint16_t x, unsigned int count) { return (x << (16 - count)) | (x >> count); }
		774	ecb_inline uint32_t ecb_rotl32 (uint32_t x, unsigned int count) { return (x >> (32 - count)) | (x << count); }
		775	ecb_inline uint32_t ecb_rotr32 (uint32_t x, unsigned int count) { return (x << (32 - count)) | (x >> count); }
		776	ecb_inline uint64_t ecb_rotl64 (uint64_t x, unsigned int count) { return (x >> (64 - count)) | (x << count); }
		777	ecb_inline uint64_t ecb_rotr64 (uint64_t x, unsigned int count) { return (x << (64 - count)) | (x >> count); }
		778
		779	#if ECB_GCC_VERSION(4,3)
		780	#define ecb_bswap16(x) (__builtin_bswap32 (x) >> 16)
		781	#define ecb_bswap32(x) __builtin_bswap32 (x)
		782	#define ecb_bswap64(x) __builtin_bswap64 (x)
		783	#else
		784	ecb_function_ uint16_t ecb_bswap16 (uint16_t x) ecb_const;
		785	ecb_function_ uint16_t
		786	ecb_bswap16 (uint16_t x)
		787	{
		788	return ecb_rotl16 (x, 8);
		789	}
		790
		791	ecb_function_ uint32_t ecb_bswap32 (uint32_t x) ecb_const;
		792	ecb_function_ uint32_t
		793	ecb_bswap32 (uint32_t x)
		794	{
		795	return (((uint32_t)ecb_bswap16 (x)) << 16) | ecb_bswap16 (x >> 16);
		796	}
		797
		798	ecb_function_ uint64_t ecb_bswap64 (uint64_t x) ecb_const;
		799	ecb_function_ uint64_t
		800	ecb_bswap64 (uint64_t x)
		801	{
		802	return (((uint64_t)ecb_bswap32 (x)) << 32) | ecb_bswap32 (x >> 32);
		803	}
		804	#endif
		805
		806	#if ECB_GCC_VERSION(4,5)
		807	#define ecb_unreachable() __builtin_unreachable ()
		808	#else
		809	/* this seems to work fine, but gcc always emits a warning for it :/ */
		810	ecb_function_ void ecb_unreachable (void) ecb_noreturn;
		811	ecb_function_ void ecb_unreachable (void) { }
		812	#endif
		813
		814	/* try to tell the compiler that some condition is definitely true */
		815	#define ecb_assume(cond) do { if (!(cond)) ecb_unreachable (); } while (0)
		816
		817	ecb_function_ unsigned char ecb_byteorder_helper (void) ecb_const;
		818	ecb_function_ unsigned char
		819	ecb_byteorder_helper (void)
		820	{
		821	const uint32_t u = 0x11223344;
		822	return *(unsigned char *)&u;
		823	}
		824
		825	ecb_function_ ecb_bool ecb_big_endian (void) ecb_const;
		826	ecb_function_ ecb_bool ecb_big_endian (void) { return ecb_byteorder_helper () == 0x11; }
		827	ecb_function_ ecb_bool ecb_little_endian (void) ecb_const;
		828	ecb_function_ ecb_bool ecb_little_endian (void) { return ecb_byteorder_helper () == 0x44; }
		829
		830	#if ECB_GCC_VERSION(3,0) || ECB_C99
		831	#define ecb_mod(m,n) ((m) % (n) + ((m) % (n) < 0 ? (n) : 0))
		832	#else
		833	#define ecb_mod(m,n) ((m) < 0 ? ((n) - 1 - ((-1 - (m)) % (n))) : ((m) % (n)))
		834	#endif
		835
		836	#if ecb_cplusplus_does_not_suck
		837	/* does not work for local types (http://www.open-std.org/jtc1/sc22/wg21/docs/papers/2008/n2657.htm) */
		838	template<typename T, int N>
		839	static inline int ecb_array_length (const T (&arr)[N])
		840	{
		841	return N;
		842	}
		843	#else
		844	#define ecb_array_length(name) (sizeof (name) / sizeof (name [0]))
		845	#endif
		846
		847	#endif
		848
		849	/* ECB.H END */
		850
		851	#define expect_false(cond) ecb_expect_false (cond)
		852	#define expect_true(cond) ecb_expect_true (cond)
		853	#define noinline ecb_noinline
		854
480	#define inline_size static inline	855	#define inline_size ecb_inline
481		856
482	#if EV_FEATURE_CODE	857	#if EV_FEATURE_CODE
483	# define inline_speed static inline	858	# define inline_speed ecb_inline
484	#else	859	#else
485	# define inline_speed static noinline	860	# define inline_speed static noinline
486	#endif	861	#endif
487		862
488	#define NUMPRI (EV_MAXPRI - EV_MINPRI + 1)	863	#define NUMPRI (EV_MAXPRI - EV_MINPRI + 1)
…		…
503	#define ev_active(w) ((W)(w))->active	878	#define ev_active(w) ((W)(w))->active
504	#define ev_at(w) ((WT)(w))->at	879	#define ev_at(w) ((WT)(w))->at
505		880
506	#if EV_USE_REALTIME	881	#if EV_USE_REALTIME
507	/* sig_atomic_t is used to avoid per-thread variables or locking but still */	882	/* sig_atomic_t is used to avoid per-thread variables or locking but still */
508	/* giving it a reasonably high chance of working on typical architetcures */	883	/* giving it a reasonably high chance of working on typical architectures */
509	static EV_ATOMIC_T have_realtime; /* did clock_gettime (CLOCK_REALTIME) work? */	884	static EV_ATOMIC_T have_realtime; /* did clock_gettime (CLOCK_REALTIME) work? */
510	#endif	885	#endif
511		886
512	#if EV_USE_MONOTONIC	887	#if EV_USE_MONOTONIC
513	static EV_ATOMIC_T have_monotonic; /* did clock_gettime (CLOCK_MONOTONIC) work? */	888	static EV_ATOMIC_T have_monotonic; /* did clock_gettime (CLOCK_MONOTONIC) work? */
…		…
527	# include "ev_win32.c"	902	# include "ev_win32.c"
528	#endif	903	#endif
529		904
530	/*****************************************************************************/	905	/*****************************************************************************/
531		906
		907	/* define a suitable floor function (only used by periodics atm) */
		908
		909	#if EV_USE_FLOOR
		910	# include <math.h>
		911	# define ev_floor(v) floor (v)
		912	#else
		913
		914	#include <float.h>
		915
		916	/* a floor() replacement function, should be independent of ev_tstamp type */
		917	static ev_tstamp noinline
		918	ev_floor (ev_tstamp v)
		919	{
		920	/* the choice of shift factor is not terribly important */
		921	#if FLT_RADIX != 2 /* assume FLT_RADIX == 10 */
		922	const ev_tstamp shift = sizeof (unsigned long) >= 8 ? 10000000000000000000. : 1000000000.;
		923	#else
		924	const ev_tstamp shift = sizeof (unsigned long) >= 8 ? 18446744073709551616. : 4294967296.;
		925	#endif
		926
		927	/* argument too large for an unsigned long? */
		928	if (expect_false (v >= shift))
		929	{
		930	ev_tstamp f;
		931
		932	if (v == v - 1.)
		933	return v; /* very large number */
		934
		935	f = shift * ev_floor (v * (1. / shift));
		936	return f + ev_floor (v - f);
		937	}
		938
		939	/* special treatment for negative args? */
		940	if (expect_false (v < 0.))
		941	{
		942	ev_tstamp f = -ev_floor (-v);
		943
		944	return f - (f == v ? 0 : 1);
		945	}
		946
		947	/* fits into an unsigned long */
		948	return (unsigned long)v;
		949	}
		950
		951	#endif
		952
		953	/*****************************************************************************/
		954
		955	#ifdef __linux
		956	# include <sys/utsname.h>
		957	#endif
		958
		959	static unsigned int noinline ecb_cold
		960	ev_linux_version (void)
		961	{
		962	#ifdef __linux
		963	unsigned int v = 0;
		964	struct utsname buf;
		965	int i;
		966	char *p = buf.release;
		967
		968	if (uname (&buf))
		969	return 0;
		970
		971	for (i = 3+1; --i; )
		972	{
		973	unsigned int c = 0;
		974
		975	for (;;)
		976	{
		977	if (*p >= '0' && *p <= '9')
		978	c = c * 10 + *p++ - '0';
		979	else
		980	{
		981	p += *p == '.';
		982	break;
		983	}
		984	}
		985
		986	v = (v << 8) | c;
		987	}
		988
		989	return v;
		990	#else
		991	return 0;
		992	#endif
		993	}
		994
		995	/*****************************************************************************/
		996
532	#if EV_AVOID_STDIO	997	#if EV_AVOID_STDIO
533	static void noinline	998	static void noinline ecb_cold
534	ev_printerr (const char *msg)	999	ev_printerr (const char *msg)
535	{	1000	{
536	write (STDERR_FILENO, msg, strlen (msg));	1001	write (STDERR_FILENO, msg, strlen (msg));
537	}	1002	}
538	#endif	1003	#endif
539		1004
540	static void (*syserr_cb)(const char *msg);	1005	static void (*syserr_cb)(const char *msg);
541		1006
542	void	1007	void ecb_cold
543	ev_set_syserr_cb (void (*cb)(const char *msg))	1008	ev_set_syserr_cb (void (*cb)(const char *msg))
544	{	1009	{
545	syserr_cb = cb;	1010	syserr_cb = cb;
546	}	1011	}
547		1012
548	static void noinline	1013	static void noinline ecb_cold
549	ev_syserr (const char *msg)	1014	ev_syserr (const char *msg)
550	{	1015	{
551	if (!msg)	1016	if (!msg)
552	msg = "(libev) system error";	1017	msg = "(libev) system error";
553		1018
554	if (syserr_cb)	1019	if (syserr_cb)
555	syserr_cb (msg);	1020	syserr_cb (msg);
556	else	1021	else
557	{	1022	{
558	#if EV_AVOID_STDIO	1023	#if EV_AVOID_STDIO
559	const char *err = strerror (errno);
560
561	ev_printerr (msg);	1024	ev_printerr (msg);
562	ev_printerr (": ");	1025	ev_printerr (": ");
563	ev_printerr (err);	1026	ev_printerr (strerror (errno));
564	ev_printerr ("\n");	1027	ev_printerr ("\n");
565	#else	1028	#else
566	perror (msg);	1029	perror (msg);
567	#endif	1030	#endif
568	abort ();	1031	abort ();
…		…
588	#endif	1051	#endif
589	}	1052	}
590		1053
591	static void *(*alloc)(void *ptr, long size) = ev_realloc_emul;	1054	static void *(*alloc)(void *ptr, long size) = ev_realloc_emul;
592		1055
593	void	1056	void ecb_cold
594	ev_set_allocator (void *(*cb)(void *ptr, long size))	1057	ev_set_allocator (void *(*cb)(void *ptr, long size))
595	{	1058	{
596	alloc = cb;	1059	alloc = cb;
597	}	1060	}
598		1061
…		…
602	ptr = alloc (ptr, size);	1065	ptr = alloc (ptr, size);
603		1066
604	if (!ptr && size)	1067	if (!ptr && size)
605	{	1068	{
606	#if EV_AVOID_STDIO	1069	#if EV_AVOID_STDIO
607	ev_printerr ("libev: memory allocation failed, aborting.\n");	1070	ev_printerr ("(libev) memory allocation failed, aborting.\n");
608	#else	1071	#else
609	fprintf (stderr, "libev: cannot allocate %ld bytes, aborting.", size);	1072	fprintf (stderr, "(libev) cannot allocate %ld bytes, aborting.", size);
610	#endif	1073	#endif
611	abort ();	1074	abort ();
612	}	1075	}
613		1076
614	return ptr;	1077	return ptr;
…		…
631	unsigned char emask; /* the epoll backend stores the actual kernel mask in here */	1094	unsigned char emask; /* the epoll backend stores the actual kernel mask in here */
632	unsigned char unused;	1095	unsigned char unused;
633	#if EV_USE_EPOLL	1096	#if EV_USE_EPOLL
634	unsigned int egen; /* generation counter to counter epoll bugs */	1097	unsigned int egen; /* generation counter to counter epoll bugs */
635	#endif	1098	#endif
636	#if EV_SELECT_IS_WINSOCKET	1099	#if EV_SELECT_IS_WINSOCKET || EV_USE_IOCP
637	SOCKET handle;	1100	SOCKET handle;
		1101	#endif
		1102	#if EV_USE_IOCP
		1103	OVERLAPPED or, ow;
638	#endif	1104	#endif
639	} ANFD;	1105	} ANFD;
640		1106
641	/* stores the pending event set for a given watcher */	1107	/* stores the pending event set for a given watcher */
642	typedef struct	1108	typedef struct
…		…
707	# define EV_RELEASE_CB (void)0	1173	# define EV_RELEASE_CB (void)0
708	# define EV_ACQUIRE_CB (void)0	1174	# define EV_ACQUIRE_CB (void)0
709	# define EV_INVOKE_PENDING ev_invoke_pending (EV_A)	1175	# define EV_INVOKE_PENDING ev_invoke_pending (EV_A)
710	#endif	1176	#endif
711		1177
712	#define EVUNLOOP_RECURSE 0x80	1178	#define EVBREAK_RECURSE 0x80
713		1179
714	/*****************************************************************************/	1180	/*****************************************************************************/
715		1181
716	#ifndef EV_HAVE_EV_TIME	1182	#ifndef EV_HAVE_EV_TIME
717	ev_tstamp	1183	ev_tstamp
…		…
761	if (delay > 0.)	1227	if (delay > 0.)
762	{	1228	{
763	#if EV_USE_NANOSLEEP	1229	#if EV_USE_NANOSLEEP
764	struct timespec ts;	1230	struct timespec ts;
765		1231
766	ts.tv_sec = (time_t)delay;	1232	EV_TS_SET (ts, delay);
767	ts.tv_nsec = (long)((delay - (ev_tstamp)(ts.tv_sec)) * 1e9);
768
769	nanosleep (&ts, 0);	1233	nanosleep (&ts, 0);
770	#elif defined(_WIN32)	1234	#elif defined(_WIN32)
771	Sleep ((unsigned long)(delay * 1e3));	1235	Sleep ((unsigned long)(delay * 1e3));
772	#else	1236	#else
773	struct timeval tv;	1237	struct timeval tv;
774		1238
775	tv.tv_sec = (time_t)delay;
776	tv.tv_usec = (long)((delay - (ev_tstamp)(tv.tv_sec)) * 1e6);
777
778	/* here we rely on sys/time.h + sys/types.h + unistd.h providing select */	1239	/* here we rely on sys/time.h + sys/types.h + unistd.h providing select */
779	/* something not guaranteed by newer posix versions, but guaranteed */	1240	/* something not guaranteed by newer posix versions, but guaranteed */
780	/* by older ones */	1241	/* by older ones */
		1242	EV_TV_SET (tv, delay);
781	select (0, 0, 0, 0, &tv);	1243	select (0, 0, 0, 0, &tv);
782	#endif	1244	#endif
783	}	1245	}
784	}	1246	}
785		1247
786	/*****************************************************************************/	1248	/*****************************************************************************/
787		1249
788	#define MALLOC_ROUND 4096 /* prefer to allocate in chunks of this size, must be 2**n and >> 4 longs */	1250	#define MALLOC_ROUND 4096 /* prefer to allocate in chunks of this size, must be 2**n and >> 4 longs */
789		1251
790	/* find a suitable new size for the given array, */	1252	/* find a suitable new size for the given array, */
791	/* hopefully by rounding to a ncie-to-malloc size */	1253	/* hopefully by rounding to a nice-to-malloc size */
792	inline_size int	1254	inline_size int
793	array_nextsize (int elem, int cur, int cnt)	1255	array_nextsize (int elem, int cur, int cnt)
794	{	1256	{
795	int ncur = cur + 1;	1257	int ncur = cur + 1;
796		1258
…		…
808	}	1270	}
809		1271
810	return ncur;	1272	return ncur;
811	}	1273	}
812		1274
813	static noinline void *	1275	static void * noinline ecb_cold
814	array_realloc (int elem, void *base, int *cur, int cnt)	1276	array_realloc (int elem, void *base, int *cur, int cnt)
815	{	1277	{
816	*cur = array_nextsize (elem, *cur, cnt);	1278	*cur = array_nextsize (elem, *cur, cnt);
817	return ev_realloc (base, elem * *cur);	1279	return ev_realloc (base, elem * *cur);
818	}	1280	}
…		…
821	memset ((void *)(base), 0, sizeof (*(base)) * (count))	1283	memset ((void *)(base), 0, sizeof (*(base)) * (count))
822		1284
823	#define array_needsize(type,base,cur,cnt,init) \	1285	#define array_needsize(type,base,cur,cnt,init) \
824	if (expect_false ((cnt) > (cur))) \	1286	if (expect_false ((cnt) > (cur))) \
825	{ \	1287	{ \
826	int ocur_ = (cur); \	1288	int ecb_unused ocur_ = (cur); \
827	(base) = (type *)array_realloc \	1289	(base) = (type *)array_realloc \
828	(sizeof (type), (base), &(cur), (cnt)); \	1290	(sizeof (type), (base), &(cur), (cnt)); \
829	init ((base) + (ocur_), (cur) - ocur_); \	1291	init ((base) + (ocur_), (cur) - ocur_); \
830	}	1292	}
831		1293
…		…
931	inline_size void	1393	inline_size void
932	fd_reify (EV_P)	1394	fd_reify (EV_P)
933	{	1395	{
934	int i;	1396	int i;
935		1397
		1398	#if EV_SELECT_IS_WINSOCKET || EV_USE_IOCP
		1399	for (i = 0; i < fdchangecnt; ++i)
		1400	{
		1401	int fd = fdchanges [i];
		1402	ANFD *anfd = anfds + fd;
		1403
		1404	if (anfd->reify & EV__IOFDSET && anfd->head)
		1405	{
		1406	SOCKET handle = EV_FD_TO_WIN32_HANDLE (fd);
		1407
		1408	if (handle != anfd->handle)
		1409	{
		1410	unsigned long arg;
		1411
		1412	assert (("libev: only socket fds supported in this configuration", ioctlsocket (handle, FIONREAD, &arg) == 0));
		1413
		1414	/* handle changed, but fd didn't - we need to do it in two steps */
		1415	backend_modify (EV_A_ fd, anfd->events, 0);
		1416	anfd->events = 0;
		1417	anfd->handle = handle;
		1418	}
		1419	}
		1420	}
		1421	#endif
		1422
936	for (i = 0; i < fdchangecnt; ++i)	1423	for (i = 0; i < fdchangecnt; ++i)
937	{	1424	{
938	int fd = fdchanges [i];	1425	int fd = fdchanges [i];
939	ANFD *anfd = anfds + fd;	1426	ANFD *anfd = anfds + fd;
940	ev_io *w;	1427	ev_io *w;
941		1428
942	unsigned char events = 0;	1429	unsigned char o_events = anfd->events;
		1430	unsigned char o_reify = anfd->reify;
943		1431
944	for (w = (ev_io *)anfd->head; w; w = (ev_io *)((WL)w)->next)	1432	anfd->reify = 0;
945	events |= (unsigned char)w->events;
946		1433
947	#if EV_SELECT_IS_WINSOCKET	1434	/*if (expect_true (o_reify & EV_ANFD_REIFY)) probably a deoptimisation */
948	if (events)
949	{	1435	{
950	unsigned long arg;	1436	anfd->events = 0;
951	anfd->handle = EV_FD_TO_WIN32_HANDLE (fd);	1437
952	assert (("libev: only socket fds supported in this configuration", ioctlsocket (anfd->handle, FIONREAD, &arg) == 0));	1438	for (w = (ev_io *)anfd->head; w; w = (ev_io *)((WL)w)->next)
		1439	anfd->events |= (unsigned char)w->events;
		1440
		1441	if (o_events != anfd->events)
		1442	o_reify = EV__IOFDSET; /* actually |= */
953	}	1443	}
954	#endif
955		1444
956	{	1445	if (o_reify & EV__IOFDSET)
957	unsigned char o_events = anfd->events;
958	unsigned char o_reify = anfd->reify;
959
960	anfd->reify = 0;
961	anfd->events = events;
962
963	if (o_events != events || o_reify & EV__IOFDSET)
964	backend_modify (EV_A_ fd, o_events, events);	1446	backend_modify (EV_A_ fd, o_events, anfd->events);
965	}
966	}	1447	}
967		1448
968	fdchangecnt = 0;	1449	fdchangecnt = 0;
969	}	1450	}
970		1451
…		…
982	fdchanges [fdchangecnt - 1] = fd;	1463	fdchanges [fdchangecnt - 1] = fd;
983	}	1464	}
984	}	1465	}
985		1466
986	/* the given fd is invalid/unusable, so make sure it doesn't hurt us anymore */	1467	/* the given fd is invalid/unusable, so make sure it doesn't hurt us anymore */
987	inline_speed void	1468	inline_speed void ecb_cold
988	fd_kill (EV_P_ int fd)	1469	fd_kill (EV_P_ int fd)
989	{	1470	{
990	ev_io *w;	1471	ev_io *w;
991		1472
992	while ((w = (ev_io *)anfds [fd].head))	1473	while ((w = (ev_io *)anfds [fd].head))
…		…
995	ev_feed_event (EV_A_ (W)w, EV_ERROR | EV_READ | EV_WRITE);	1476	ev_feed_event (EV_A_ (W)w, EV_ERROR | EV_READ | EV_WRITE);
996	}	1477	}
997	}	1478	}
998		1479
999	/* check whether the given fd is actually valid, for error recovery */	1480	/* check whether the given fd is actually valid, for error recovery */
1000	inline_size int	1481	inline_size int ecb_cold
1001	fd_valid (int fd)	1482	fd_valid (int fd)
1002	{	1483	{
1003	#ifdef _WIN32	1484	#ifdef _WIN32
1004	return EV_FD_TO_WIN32_HANDLE (fd) != -1;	1485	return EV_FD_TO_WIN32_HANDLE (fd) != -1;
1005	#else	1486	#else
1006	return fcntl (fd, F_GETFD) != -1;	1487	return fcntl (fd, F_GETFD) != -1;
1007	#endif	1488	#endif
1008	}	1489	}
1009		1490
1010	/* called on EBADF to verify fds */	1491	/* called on EBADF to verify fds */
1011	static void noinline	1492	static void noinline ecb_cold
1012	fd_ebadf (EV_P)	1493	fd_ebadf (EV_P)
1013	{	1494	{
1014	int fd;	1495	int fd;
1015		1496
1016	for (fd = 0; fd < anfdmax; ++fd)	1497	for (fd = 0; fd < anfdmax; ++fd)
…		…
1018	if (!fd_valid (fd) && errno == EBADF)	1499	if (!fd_valid (fd) && errno == EBADF)
1019	fd_kill (EV_A_ fd);	1500	fd_kill (EV_A_ fd);
1020	}	1501	}
1021		1502
1022	/* called on ENOMEM in select/poll to kill some fds and retry */	1503	/* called on ENOMEM in select/poll to kill some fds and retry */
1023	static void noinline	1504	static void noinline ecb_cold
1024	fd_enomem (EV_P)	1505	fd_enomem (EV_P)
1025	{	1506	{
1026	int fd;	1507	int fd;
1027		1508
1028	for (fd = anfdmax; fd--; )	1509	for (fd = anfdmax; fd--; )
…		…
1063	}	1544	}
1064		1545
1065	/*****************************************************************************/	1546	/*****************************************************************************/
1066		1547
1067	/*	1548	/*
1068	* the heap functions want a real array index. array index 0 uis guaranteed to not	1549	* the heap functions want a real array index. array index 0 is guaranteed to not
1069	* be in-use at any time. the first heap entry is at array [HEAP0]. DHEAP gives	1550	* be in-use at any time. the first heap entry is at array [HEAP0]. DHEAP gives
1070	* the branching factor of the d-tree.	1551	* the branching factor of the d-tree.
1071	*/	1552	*/
1072		1553
1073	/*	1554	/*
…		…
1223		1704
1224	/*****************************************************************************/	1705	/*****************************************************************************/
1225		1706
1226	#if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE	1707	#if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE
1227		1708
1228	static void noinline	1709	static void noinline ecb_cold
1229	evpipe_init (EV_P)	1710	evpipe_init (EV_P)
1230	{	1711	{
1231	if (!ev_is_active (&pipe_w))	1712	if (!ev_is_active (&pipe_w))
1232	{	1713	{
1233	# if EV_USE_EVENTFD	1714	# if EV_USE_EVENTFD
…		…
1255	ev_io_start (EV_A_ &pipe_w);	1736	ev_io_start (EV_A_ &pipe_w);
1256	ev_unref (EV_A); /* watcher should not keep loop alive */	1737	ev_unref (EV_A); /* watcher should not keep loop alive */
1257	}	1738	}
1258	}	1739	}
1259		1740
1260	inline_size void	1741	inline_speed void
1261	evpipe_write (EV_P_ EV_ATOMIC_T *flag)	1742	evpipe_write (EV_P_ EV_ATOMIC_T *flag)
1262	{	1743	{
1263	if (!*flag)	1744	if (expect_true (*flag))
		1745	return;
		1746
		1747	*flag = 1;
		1748
		1749	ECB_MEMORY_FENCE_RELEASE; /* make sure flag is visible before the wakeup */
		1750
		1751	pipe_write_skipped = 1;
		1752
		1753	ECB_MEMORY_FENCE; /* make sure pipe_write_skipped is visible before we check pipe_write_wanted */
		1754
		1755	if (pipe_write_wanted)
1264	{	1756	{
		1757	int old_errno;
		1758
		1759	pipe_write_skipped = 0; /* just an optimsiation, no fence needed */
		1760
1265	int old_errno = errno; /* save errno because write might clobber it */	1761	old_errno = errno; /* save errno because write will clobber it */
1266	char dummy;
1267
1268	*flag = 1;
1269		1762
1270	#if EV_USE_EVENTFD	1763	#if EV_USE_EVENTFD
1271	if (evfd >= 0)	1764	if (evfd >= 0)
1272	{	1765	{
1273	uint64_t counter = 1;	1766	uint64_t counter = 1;
1274	write (evfd, &counter, sizeof (uint64_t));	1767	write (evfd, &counter, sizeof (uint64_t));
1275	}	1768	}
1276	else	1769	else
1277	#endif	1770	#endif
		1771	{
		1772	/* win32 people keep sending patches that change this write() to send() */
		1773	/* and then run away. but send() is wrong, it wants a socket handle on win32 */
		1774	/* so when you think this write should be a send instead, please find out */
		1775	/* where your send() is from - it's definitely not the microsoft send, and */
		1776	/* tell me. thank you. */
1278	write (evpipe [1], &dummy, 1);	1777	write (evpipe [1], &(evpipe [1]), 1);
		1778	}
1279		1779
1280	errno = old_errno;	1780	errno = old_errno;
1281	}	1781	}
1282	}	1782	}
1283		1783
…		…
1286	static void	1786	static void
1287	pipecb (EV_P_ ev_io *iow, int revents)	1787	pipecb (EV_P_ ev_io *iow, int revents)
1288	{	1788	{
1289	int i;	1789	int i;
1290		1790
		1791	if (revents & EV_READ)
		1792	{
1291	#if EV_USE_EVENTFD	1793	#if EV_USE_EVENTFD
1292	if (evfd >= 0)	1794	if (evfd >= 0)
1293	{	1795	{
1294	uint64_t counter;	1796	uint64_t counter;
1295	read (evfd, &counter, sizeof (uint64_t));	1797	read (evfd, &counter, sizeof (uint64_t));
1296	}	1798	}
1297	else	1799	else
1298	#endif	1800	#endif
1299	{	1801	{
1300	char dummy;	1802	char dummy;
		1803	/* see discussion in evpipe_write when you think this read should be recv in win32 */
1301	read (evpipe [0], &dummy, 1);	1804	read (evpipe [0], &dummy, 1);
		1805	}
1302	}	1806	}
1303		1807
		1808	pipe_write_skipped = 0;
		1809
		1810	#if EV_SIGNAL_ENABLE
1304	if (sig_pending)	1811	if (sig_pending)
1305	{	1812	{
1306	sig_pending = 0;	1813	sig_pending = 0;
1307		1814
1308	for (i = EV_NSIG - 1; i--; )	1815	for (i = EV_NSIG - 1; i--; )
1309	if (expect_false (signals [i].pending))	1816	if (expect_false (signals [i].pending))
1310	ev_feed_signal_event (EV_A_ i + 1);	1817	ev_feed_signal_event (EV_A_ i + 1);
1311	}	1818	}
		1819	#endif
1312		1820
1313	#if EV_ASYNC_ENABLE	1821	#if EV_ASYNC_ENABLE
1314	if (async_pending)	1822	if (async_pending)
1315	{	1823	{
1316	async_pending = 0;	1824	async_pending = 0;
…		…
1325	#endif	1833	#endif
1326	}	1834	}
1327		1835
1328	/*****************************************************************************/	1836	/*****************************************************************************/
1329		1837
		1838	void
		1839	ev_feed_signal (int signum)
		1840	{
		1841	#if EV_MULTIPLICITY
		1842	EV_P = signals [signum - 1].loop;
		1843
		1844	if (!EV_A)
		1845	return;
		1846	#endif
		1847
		1848	if (!ev_active (&pipe_w))
		1849	return;
		1850
		1851	signals [signum - 1].pending = 1;
		1852	evpipe_write (EV_A_ &sig_pending);
		1853	}
		1854
1330	static void	1855	static void
1331	ev_sighandler (int signum)	1856	ev_sighandler (int signum)
1332	{	1857	{
1333	#if EV_MULTIPLICITY
1334	EV_P = signals [signum - 1].loop;
1335	#endif
1336
1337	#ifdef _WIN32	1858	#ifdef _WIN32
1338	signal (signum, ev_sighandler);	1859	signal (signum, ev_sighandler);
1339	#endif	1860	#endif
1340		1861
1341	signals [signum - 1].pending = 1;	1862	ev_feed_signal (signum);
1342	evpipe_write (EV_A_ &sig_pending);
1343	}	1863	}
1344		1864
1345	void noinline	1865	void noinline
1346	ev_feed_signal_event (EV_P_ int signum)	1866	ev_feed_signal_event (EV_P_ int signum)
1347	{	1867	{
…		…
1447		1967
1448	#endif	1968	#endif
1449		1969
1450	/*****************************************************************************/	1970	/*****************************************************************************/
1451		1971
		1972	#if EV_USE_IOCP
		1973	# include "ev_iocp.c"
		1974	#endif
1452	#if EV_USE_PORT	1975	#if EV_USE_PORT
1453	# include "ev_port.c"	1976	# include "ev_port.c"
1454	#endif	1977	#endif
1455	#if EV_USE_KQUEUE	1978	#if EV_USE_KQUEUE
1456	# include "ev_kqueue.c"	1979	# include "ev_kqueue.c"
…		…
1463	#endif	1986	#endif
1464	#if EV_USE_SELECT	1987	#if EV_USE_SELECT
1465	# include "ev_select.c"	1988	# include "ev_select.c"
1466	#endif	1989	#endif
1467		1990
1468	int	1991	int ecb_cold
1469	ev_version_major (void)	1992	ev_version_major (void)
1470	{	1993	{
1471	return EV_VERSION_MAJOR;	1994	return EV_VERSION_MAJOR;
1472	}	1995	}
1473		1996
1474	int	1997	int ecb_cold
1475	ev_version_minor (void)	1998	ev_version_minor (void)
1476	{	1999	{
1477	return EV_VERSION_MINOR;	2000	return EV_VERSION_MINOR;
1478	}	2001	}
1479		2002
1480	/* return true if we are running with elevated privileges and should ignore env variables */	2003	/* return true if we are running with elevated privileges and should ignore env variables */
1481	int inline_size	2004	int inline_size ecb_cold
1482	enable_secure (void)	2005	enable_secure (void)
1483	{	2006	{
1484	#ifdef _WIN32	2007	#ifdef _WIN32
1485	return 0;	2008	return 0;
1486	#else	2009	#else
1487	return getuid () != geteuid ()	2010	return getuid () != geteuid ()
1488	|| getgid () != getegid ();	2011	|| getgid () != getegid ();
1489	#endif	2012	#endif
1490	}	2013	}
1491		2014
1492	unsigned int	2015	unsigned int ecb_cold
1493	ev_supported_backends (void)	2016	ev_supported_backends (void)
1494	{	2017	{
1495	unsigned int flags = 0;	2018	unsigned int flags = 0;
1496		2019
1497	if (EV_USE_PORT ) flags |= EVBACKEND_PORT;	2020	if (EV_USE_PORT ) flags |= EVBACKEND_PORT;
…		…
1501	if (EV_USE_SELECT) flags |= EVBACKEND_SELECT;	2024	if (EV_USE_SELECT) flags |= EVBACKEND_SELECT;
1502		2025
1503	return flags;	2026	return flags;
1504	}	2027	}
1505		2028
1506	unsigned int	2029	unsigned int ecb_cold
1507	ev_recommended_backends (void)	2030	ev_recommended_backends (void)
1508	{	2031	{
1509	unsigned int flags = ev_supported_backends ();	2032	unsigned int flags = ev_supported_backends ();
1510		2033
1511	#ifndef __NetBSD__	2034	#ifndef __NetBSD__
…		…
1523	#endif	2046	#endif
1524		2047
1525	return flags;	2048	return flags;
1526	}	2049	}
1527		2050
1528	unsigned int	2051	unsigned int ecb_cold
1529	ev_embeddable_backends (void)	2052	ev_embeddable_backends (void)
1530	{	2053	{
1531	int flags = EVBACKEND_EPOLL | EVBACKEND_KQUEUE | EVBACKEND_PORT;	2054	int flags = EVBACKEND_EPOLL | EVBACKEND_KQUEUE | EVBACKEND_PORT;
1532		2055
1533	/* epoll embeddability broken on all linux versions up to at least 2.6.23 */	2056	/* epoll embeddability broken on all linux versions up to at least 2.6.23 */
1534	/* please fix it and tell me how to detect the fix */	2057	if (ev_linux_version () < 0x020620) /* disable it on linux < 2.6.32 */
1535	flags &= ~EVBACKEND_EPOLL;	2058	flags &= ~EVBACKEND_EPOLL;
1536		2059
1537	return flags;	2060	return flags;
1538	}	2061	}
1539		2062
1540	unsigned int	2063	unsigned int
…		…
1578	ev_userdata (EV_P)	2101	ev_userdata (EV_P)
1579	{	2102	{
1580	return userdata;	2103	return userdata;
1581	}	2104	}
1582		2105
		2106	void
1583	void ev_set_invoke_pending_cb (EV_P_ void (*invoke_pending_cb)(EV_P))	2107	ev_set_invoke_pending_cb (EV_P_ void (*invoke_pending_cb)(EV_P))
1584	{	2108	{
1585	invoke_cb = invoke_pending_cb;	2109	invoke_cb = invoke_pending_cb;
1586	}	2110	}
1587		2111
		2112	void
1588	void ev_set_loop_release_cb (EV_P_ void (*release)(EV_P), void (*acquire)(EV_P))	2113	ev_set_loop_release_cb (EV_P_ void (*release)(EV_P), void (*acquire)(EV_P))
1589	{	2114	{
1590	release_cb = release;	2115	release_cb = release;
1591	acquire_cb = acquire;	2116	acquire_cb = acquire;
1592	}	2117	}
1593	#endif	2118	#endif
1594		2119
1595	/* initialise a loop structure, must be zero-initialised */	2120	/* initialise a loop structure, must be zero-initialised */
1596	static void noinline	2121	static void noinline ecb_cold
1597	loop_init (EV_P_ unsigned int flags)	2122	loop_init (EV_P_ unsigned int flags)
1598	{	2123	{
1599	if (!backend)	2124	if (!backend)
1600	{	2125	{
		2126	origflags = flags;
		2127
1601	#if EV_USE_REALTIME	2128	#if EV_USE_REALTIME
1602	if (!have_realtime)	2129	if (!have_realtime)
1603	{	2130	{
1604	struct timespec ts;	2131	struct timespec ts;
1605		2132
…		…
1627	if (!(flags & EVFLAG_NOENV)	2154	if (!(flags & EVFLAG_NOENV)
1628	&& !enable_secure ()	2155	&& !enable_secure ()
1629	&& getenv ("LIBEV_FLAGS"))	2156	&& getenv ("LIBEV_FLAGS"))
1630	flags = atoi (getenv ("LIBEV_FLAGS"));	2157	flags = atoi (getenv ("LIBEV_FLAGS"));
1631		2158
1632	ev_rt_now = ev_time ();	2159	ev_rt_now = ev_time ();
1633	mn_now = get_clock ();	2160	mn_now = get_clock ();
1634	now_floor = mn_now;	2161	now_floor = mn_now;
1635	rtmn_diff = ev_rt_now - mn_now;	2162	rtmn_diff = ev_rt_now - mn_now;
1636	#if EV_FEATURE_API	2163	#if EV_FEATURE_API
1637	invoke_cb = ev_invoke_pending;	2164	invoke_cb = ev_invoke_pending;
1638	#endif	2165	#endif
1639		2166
1640	io_blocktime = 0.;	2167	io_blocktime = 0.;
1641	timeout_blocktime = 0.;	2168	timeout_blocktime = 0.;
1642	backend = 0;	2169	backend = 0;
1643	backend_fd = -1;	2170	backend_fd = -1;
1644	sig_pending = 0;	2171	sig_pending = 0;
1645	#if EV_ASYNC_ENABLE	2172	#if EV_ASYNC_ENABLE
1646	async_pending = 0;	2173	async_pending = 0;
1647	#endif	2174	#endif
		2175	pipe_write_skipped = 0;
		2176	pipe_write_wanted = 0;
1648	#if EV_USE_INOTIFY	2177	#if EV_USE_INOTIFY
1649	fs_fd = flags & EVFLAG_NOINOTIFY ? -1 : -2;	2178	fs_fd = flags & EVFLAG_NOINOTIFY ? -1 : -2;
1650	#endif	2179	#endif
1651	#if EV_USE_SIGNALFD	2180	#if EV_USE_SIGNALFD
1652	sigfd = flags & EVFLAG_SIGNALFD ? -2 : -1;	2181	sigfd = flags & EVFLAG_SIGNALFD ? -2 : -1;
1653	#endif	2182	#endif
1654		2183
1655	if (!(flags & 0x0000ffffU))	2184	if (!(flags & EVBACKEND_MASK))
1656	flags |= ev_recommended_backends ();	2185	flags |= ev_recommended_backends ();
1657		2186
		2187	#if EV_USE_IOCP
		2188	if (!backend && (flags & EVBACKEND_IOCP )) backend = iocp_init (EV_A_ flags);
		2189	#endif
1658	#if EV_USE_PORT	2190	#if EV_USE_PORT
1659	if (!backend && (flags & EVBACKEND_PORT )) backend = port_init (EV_A_ flags);	2191	if (!backend && (flags & EVBACKEND_PORT )) backend = port_init (EV_A_ flags);
1660	#endif	2192	#endif
1661	#if EV_USE_KQUEUE	2193	#if EV_USE_KQUEUE
1662	if (!backend && (flags & EVBACKEND_KQUEUE)) backend = kqueue_init (EV_A_ flags);	2194	if (!backend && (flags & EVBACKEND_KQUEUE)) backend = kqueue_init (EV_A_ flags);
…		…
1679	#endif	2211	#endif
1680	}	2212	}
1681	}	2213	}
1682		2214
1683	/* free up a loop structure */	2215	/* free up a loop structure */
1684	static void noinline	2216	void ecb_cold
1685	loop_destroy (EV_P)	2217	ev_loop_destroy (EV_P)
1686	{	2218	{
1687	int i;	2219	int i;
		2220
		2221	#if EV_MULTIPLICITY
		2222	/* mimic free (0) */
		2223	if (!EV_A)
		2224	return;
		2225	#endif
		2226
		2227	#if EV_CLEANUP_ENABLE
		2228	/* queue cleanup watchers (and execute them) */
		2229	if (expect_false (cleanupcnt))
		2230	{
		2231	queue_events (EV_A_ (W *)cleanups, cleanupcnt, EV_CLEANUP);
		2232	EV_INVOKE_PENDING;
		2233	}
		2234	#endif
		2235
		2236	#if EV_CHILD_ENABLE
		2237	if (ev_is_active (&childev))
		2238	{
		2239	ev_ref (EV_A); /* child watcher */
		2240	ev_signal_stop (EV_A_ &childev);
		2241	}
		2242	#endif
1688		2243
1689	if (ev_is_active (&pipe_w))	2244	if (ev_is_active (&pipe_w))
1690	{	2245	{
1691	/*ev_ref (EV_A);*/	2246	/*ev_ref (EV_A);*/
1692	/*ev_io_stop (EV_A_ &pipe_w);*/	2247	/*ev_io_stop (EV_A_ &pipe_w);*/
…		…
1714	#endif	2269	#endif
1715		2270
1716	if (backend_fd >= 0)	2271	if (backend_fd >= 0)
1717	close (backend_fd);	2272	close (backend_fd);
1718		2273
		2274	#if EV_USE_IOCP
		2275	if (backend == EVBACKEND_IOCP ) iocp_destroy (EV_A);
		2276	#endif
1719	#if EV_USE_PORT	2277	#if EV_USE_PORT
1720	if (backend == EVBACKEND_PORT ) port_destroy (EV_A);	2278	if (backend == EVBACKEND_PORT ) port_destroy (EV_A);
1721	#endif	2279	#endif
1722	#if EV_USE_KQUEUE	2280	#if EV_USE_KQUEUE
1723	if (backend == EVBACKEND_KQUEUE) kqueue_destroy (EV_A);	2281	if (backend == EVBACKEND_KQUEUE) kqueue_destroy (EV_A);
…		…
1750	array_free (periodic, EMPTY);	2308	array_free (periodic, EMPTY);
1751	#endif	2309	#endif
1752	#if EV_FORK_ENABLE	2310	#if EV_FORK_ENABLE
1753	array_free (fork, EMPTY);	2311	array_free (fork, EMPTY);
1754	#endif	2312	#endif
		2313	#if EV_CLEANUP_ENABLE
		2314	array_free (cleanup, EMPTY);
		2315	#endif
1755	array_free (prepare, EMPTY);	2316	array_free (prepare, EMPTY);
1756	array_free (check, EMPTY);	2317	array_free (check, EMPTY);
1757	#if EV_ASYNC_ENABLE	2318	#if EV_ASYNC_ENABLE
1758	array_free (async, EMPTY);	2319	array_free (async, EMPTY);
1759	#endif	2320	#endif
1760		2321
1761	backend = 0;	2322	backend = 0;
		2323
		2324	#if EV_MULTIPLICITY
		2325	if (ev_is_default_loop (EV_A))
		2326	#endif
		2327	ev_default_loop_ptr = 0;
		2328	#if EV_MULTIPLICITY
		2329	else
		2330	ev_free (EV_A);
		2331	#endif
1762	}	2332	}
1763		2333
1764	#if EV_USE_INOTIFY	2334	#if EV_USE_INOTIFY
1765	inline_size void infy_fork (EV_P);	2335	inline_size void infy_fork (EV_P);
1766	#endif	2336	#endif
…		…
1781	infy_fork (EV_A);	2351	infy_fork (EV_A);
1782	#endif	2352	#endif
1783		2353
1784	if (ev_is_active (&pipe_w))	2354	if (ev_is_active (&pipe_w))
1785	{	2355	{
1786	/* this "locks" the handlers against writing to the pipe */	2356	/* pipe_write_wanted must be false now, so modifying fd vars should be safe */
1787	/* while we modify the fd vars */
1788	sig_pending = 1;
1789	#if EV_ASYNC_ENABLE
1790	async_pending = 1;
1791	#endif
1792		2357
1793	ev_ref (EV_A);	2358	ev_ref (EV_A);
1794	ev_io_stop (EV_A_ &pipe_w);	2359	ev_io_stop (EV_A_ &pipe_w);
1795		2360
1796	#if EV_USE_EVENTFD	2361	#if EV_USE_EVENTFD
…		…
1814	postfork = 0;	2379	postfork = 0;
1815	}	2380	}
1816		2381
1817	#if EV_MULTIPLICITY	2382	#if EV_MULTIPLICITY
1818		2383
1819	struct ev_loop *	2384	struct ev_loop * ecb_cold
1820	ev_loop_new (unsigned int flags)	2385	ev_loop_new (unsigned int flags)
1821	{	2386	{
1822	EV_P = (struct ev_loop *)ev_malloc (sizeof (struct ev_loop));	2387	EV_P = (struct ev_loop *)ev_malloc (sizeof (struct ev_loop));
1823		2388
1824	memset (EV_A, 0, sizeof (struct ev_loop));	2389	memset (EV_A, 0, sizeof (struct ev_loop));
1825	loop_init (EV_A_ flags);	2390	loop_init (EV_A_ flags);
1826		2391
1827	if (ev_backend (EV_A))	2392	if (ev_backend (EV_A))
1828	return EV_A;	2393	return EV_A;
1829		2394
		2395	ev_free (EV_A);
1830	return 0;	2396	return 0;
1831	}	2397	}
1832		2398
1833	void
1834	ev_loop_destroy (EV_P)
1835	{
1836	loop_destroy (EV_A);
1837	ev_free (loop);
1838	}
1839
1840	void
1841	ev_loop_fork (EV_P)
1842	{
1843	postfork = 1; /* must be in line with ev_default_fork */
1844	}
1845	#endif /* multiplicity */	2399	#endif /* multiplicity */
1846		2400
1847	#if EV_VERIFY	2401	#if EV_VERIFY
1848	static void noinline	2402	static void noinline ecb_cold
1849	verify_watcher (EV_P_ W w)	2403	verify_watcher (EV_P_ W w)
1850	{	2404	{
1851	assert (("libev: watcher has invalid priority", ABSPRI (w) >= 0 && ABSPRI (w) < NUMPRI));	2405	assert (("libev: watcher has invalid priority", ABSPRI (w) >= 0 && ABSPRI (w) < NUMPRI));
1852		2406
1853	if (w->pending)	2407	if (w->pending)
1854	assert (("libev: pending watcher not on pending queue", pendings [ABSPRI (w)][w->pending - 1].w == w));	2408	assert (("libev: pending watcher not on pending queue", pendings [ABSPRI (w)][w->pending - 1].w == w));
1855	}	2409	}
1856		2410
1857	static void noinline	2411	static void noinline ecb_cold
1858	verify_heap (EV_P_ ANHE *heap, int N)	2412	verify_heap (EV_P_ ANHE *heap, int N)
1859	{	2413	{
1860	int i;	2414	int i;
1861		2415
1862	for (i = HEAP0; i < N + HEAP0; ++i)	2416	for (i = HEAP0; i < N + HEAP0; ++i)
…		…
1867		2421
1868	verify_watcher (EV_A_ (W)ANHE_w (heap [i]));	2422	verify_watcher (EV_A_ (W)ANHE_w (heap [i]));
1869	}	2423	}
1870	}	2424	}
1871		2425
1872	static void noinline	2426	static void noinline ecb_cold
1873	array_verify (EV_P_ W *ws, int cnt)	2427	array_verify (EV_P_ W *ws, int cnt)
1874	{	2428	{
1875	while (cnt--)	2429	while (cnt--)
1876	{	2430	{
1877	assert (("libev: active index mismatch", ev_active (ws [cnt]) == cnt + 1));	2431	assert (("libev: active index mismatch", ev_active (ws [cnt]) == cnt + 1));
…		…
1879	}	2433	}
1880	}	2434	}
1881	#endif	2435	#endif
1882		2436
1883	#if EV_FEATURE_API	2437	#if EV_FEATURE_API
1884	void	2438	void ecb_cold
1885	ev_verify (EV_P)	2439	ev_verify (EV_P)
1886	{	2440	{
1887	#if EV_VERIFY	2441	#if EV_VERIFY
1888	int i;	2442	int i;
1889	WL w;	2443	WL w;
…		…
1924	#if EV_FORK_ENABLE	2478	#if EV_FORK_ENABLE
1925	assert (forkmax >= forkcnt);	2479	assert (forkmax >= forkcnt);
1926	array_verify (EV_A_ (W *)forks, forkcnt);	2480	array_verify (EV_A_ (W *)forks, forkcnt);
1927	#endif	2481	#endif
1928		2482
		2483	#if EV_CLEANUP_ENABLE
		2484	assert (cleanupmax >= cleanupcnt);
		2485	array_verify (EV_A_ (W *)cleanups, cleanupcnt);
		2486	#endif
		2487
1929	#if EV_ASYNC_ENABLE	2488	#if EV_ASYNC_ENABLE
1930	assert (asyncmax >= asynccnt);	2489	assert (asyncmax >= asynccnt);
1931	array_verify (EV_A_ (W *)asyncs, asynccnt);	2490	array_verify (EV_A_ (W *)asyncs, asynccnt);
1932	#endif	2491	#endif
1933		2492
…		…
1950	#endif	2509	#endif
1951	}	2510	}
1952	#endif	2511	#endif
1953		2512
1954	#if EV_MULTIPLICITY	2513	#if EV_MULTIPLICITY
1955	struct ev_loop *	2514	struct ev_loop * ecb_cold
1956	ev_default_loop_init (unsigned int flags)
1957	#else	2515	#else
1958	int	2516	int
		2517	#endif
1959	ev_default_loop (unsigned int flags)	2518	ev_default_loop (unsigned int flags)
1960	#endif
1961	{	2519	{
1962	if (!ev_default_loop_ptr)	2520	if (!ev_default_loop_ptr)
1963	{	2521	{
1964	#if EV_MULTIPLICITY	2522	#if EV_MULTIPLICITY
1965	EV_P = ev_default_loop_ptr = &default_loop_struct;	2523	EV_P = ev_default_loop_ptr = &default_loop_struct;
…		…
1984		2542
1985	return ev_default_loop_ptr;	2543	return ev_default_loop_ptr;
1986	}	2544	}
1987		2545
1988	void	2546	void
1989	ev_default_destroy (void)	2547	ev_loop_fork (EV_P)
1990	{	2548	{
1991	#if EV_MULTIPLICITY
1992	EV_P = ev_default_loop_ptr;
1993	#endif
1994
1995	ev_default_loop_ptr = 0;
1996
1997	#if EV_CHILD_ENABLE
1998	ev_ref (EV_A); /* child watcher */
1999	ev_signal_stop (EV_A_ &childev);
2000	#endif
2001
2002	loop_destroy (EV_A);
2003	}
2004
2005	void
2006	ev_default_fork (void)
2007	{
2008	#if EV_MULTIPLICITY
2009	EV_P = ev_default_loop_ptr;
2010	#endif
2011
2012	postfork = 1; /* must be in line with ev_loop_fork */	2549	postfork = 1; /* must be in line with ev_default_fork */
2013	}	2550	}
2014		2551
2015	/*****************************************************************************/	2552	/*****************************************************************************/
2016		2553
2017	void	2554	void
…		…
2039		2576
2040	for (pri = NUMPRI; pri--; )	2577	for (pri = NUMPRI; pri--; )
2041	while (pendingcnt [pri])	2578	while (pendingcnt [pri])
2042	{	2579	{
2043	ANPENDING *p = pendings [pri] + --pendingcnt [pri];	2580	ANPENDING *p = pendings [pri] + --pendingcnt [pri];
2044
2045	/*assert (("libev: non-pending watcher on pending list", p->w->pending));*/
2046	/* ^ this is no longer true, as pending_w could be here */
2047		2581
2048	p->w->pending = 0;	2582	p->w->pending = 0;
2049	EV_CB_INVOKE (p->w, p->events);	2583	EV_CB_INVOKE (p->w, p->events);
2050	EV_FREQUENT_CHECK;	2584	EV_FREQUENT_CHECK;
2051	}	2585	}
…		…
2113	feed_reverse_done (EV_A_ EV_TIMER);	2647	feed_reverse_done (EV_A_ EV_TIMER);
2114	}	2648	}
2115	}	2649	}
2116		2650
2117	#if EV_PERIODIC_ENABLE	2651	#if EV_PERIODIC_ENABLE
		2652
		2653	static void noinline
		2654	periodic_recalc (EV_P_ ev_periodic *w)
		2655	{
		2656	ev_tstamp interval = w->interval > MIN_INTERVAL ? w->interval : MIN_INTERVAL;
		2657	ev_tstamp at = w->offset + interval * ev_floor ((ev_rt_now - w->offset) / interval);
		2658
		2659	/* the above almost always errs on the low side */
		2660	while (at <= ev_rt_now)
		2661	{
		2662	ev_tstamp nat = at + w->interval;
		2663
		2664	/* when resolution fails us, we use ev_rt_now */
		2665	if (expect_false (nat == at))
		2666	{
		2667	at = ev_rt_now;
		2668	break;
		2669	}
		2670
		2671	at = nat;
		2672	}
		2673
		2674	ev_at (w) = at;
		2675	}
		2676
2118	/* make periodics pending */	2677	/* make periodics pending */
2119	inline_size void	2678	inline_size void
2120	periodics_reify (EV_P)	2679	periodics_reify (EV_P)
2121	{	2680	{
2122	EV_FREQUENT_CHECK;	2681	EV_FREQUENT_CHECK;
…		…
2141	ANHE_at_cache (periodics [HEAP0]);	2700	ANHE_at_cache (periodics [HEAP0]);
2142	downheap (periodics, periodiccnt, HEAP0);	2701	downheap (periodics, periodiccnt, HEAP0);
2143	}	2702	}
2144	else if (w->interval)	2703	else if (w->interval)
2145	{	2704	{
2146	ev_at (w) = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval;	2705	periodic_recalc (EV_A_ w);
2147	/* if next trigger time is not sufficiently in the future, put it there */
2148	/* this might happen because of floating point inexactness */
2149	if (ev_at (w) - ev_rt_now < TIME_EPSILON)
2150	{
2151	ev_at (w) += w->interval;
2152
2153	/* if interval is unreasonably low we might still have a time in the past */
2154	/* so correct this. this will make the periodic very inexact, but the user */
2155	/* has effectively asked to get triggered more often than possible */
2156	if (ev_at (w) < ev_rt_now)
2157	ev_at (w) = ev_rt_now;
2158	}
2159
2160	ANHE_at_cache (periodics [HEAP0]);	2706	ANHE_at_cache (periodics [HEAP0]);
2161	downheap (periodics, periodiccnt, HEAP0);	2707	downheap (periodics, periodiccnt, HEAP0);
2162	}	2708	}
2163	else	2709	else
2164	ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */	2710	ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */
…		…
2171	feed_reverse_done (EV_A_ EV_PERIODIC);	2717	feed_reverse_done (EV_A_ EV_PERIODIC);
2172	}	2718	}
2173	}	2719	}
2174		2720
2175	/* simply recalculate all periodics */	2721	/* simply recalculate all periodics */
2176	/* TODO: maybe ensure that at leats one event happens when jumping forward? */	2722	/* TODO: maybe ensure that at least one event happens when jumping forward? */
2177	static void noinline	2723	static void noinline ecb_cold
2178	periodics_reschedule (EV_P)	2724	periodics_reschedule (EV_P)
2179	{	2725	{
2180	int i;	2726	int i;
2181		2727
2182	/* adjust periodics after time jump */	2728	/* adjust periodics after time jump */
…		…
2185	ev_periodic *w = (ev_periodic *)ANHE_w (periodics [i]);	2731	ev_periodic *w = (ev_periodic *)ANHE_w (periodics [i]);
2186		2732
2187	if (w->reschedule_cb)	2733	if (w->reschedule_cb)
2188	ev_at (w) = w->reschedule_cb (w, ev_rt_now);	2734	ev_at (w) = w->reschedule_cb (w, ev_rt_now);
2189	else if (w->interval)	2735	else if (w->interval)
2190	ev_at (w) = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval;	2736	periodic_recalc (EV_A_ w);
2191		2737
2192	ANHE_at_cache (periodics [i]);	2738	ANHE_at_cache (periodics [i]);
2193	}	2739	}
2194		2740
2195	reheap (periodics, periodiccnt);	2741	reheap (periodics, periodiccnt);
2196	}	2742	}
2197	#endif	2743	#endif
2198		2744
2199	/* adjust all timers by a given offset */	2745	/* adjust all timers by a given offset */
2200	static void noinline	2746	static void noinline ecb_cold
2201	timers_reschedule (EV_P_ ev_tstamp adjust)	2747	timers_reschedule (EV_P_ ev_tstamp adjust)
2202	{	2748	{
2203	int i;	2749	int i;
2204		2750
2205	for (i = 0; i < timercnt; ++i)	2751	for (i = 0; i < timercnt; ++i)
…		…
2242	* doesn't hurt either as we only do this on time-jumps or	2788	* doesn't hurt either as we only do this on time-jumps or
2243	* in the unlikely event of having been preempted here.	2789	* in the unlikely event of having been preempted here.
2244	*/	2790	*/
2245	for (i = 4; --i; )	2791	for (i = 4; --i; )
2246	{	2792	{
		2793	ev_tstamp diff;
2247	rtmn_diff = ev_rt_now - mn_now;	2794	rtmn_diff = ev_rt_now - mn_now;
2248		2795
		2796	diff = odiff - rtmn_diff;
		2797
2249	if (expect_true (fabs (odiff - rtmn_diff) < MIN_TIMEJUMP))	2798	if (expect_true ((diff < 0. ? -diff : diff) < MIN_TIMEJUMP))
2250	return; /* all is well */	2799	return; /* all is well */
2251		2800
2252	ev_rt_now = ev_time ();	2801	ev_rt_now = ev_time ();
2253	mn_now = get_clock ();	2802	mn_now = get_clock ();
2254	now_floor = mn_now;	2803	now_floor = mn_now;
…		…
2277	mn_now = ev_rt_now;	2826	mn_now = ev_rt_now;
2278	}	2827	}
2279	}	2828	}
2280		2829
2281	void	2830	void
2282	ev_loop (EV_P_ int flags)	2831	ev_run (EV_P_ int flags)
2283	{	2832	{
2284	#if EV_FEATURE_API	2833	#if EV_FEATURE_API
2285	++loop_depth;	2834	++loop_depth;
2286	#endif	2835	#endif
2287		2836
2288	assert (("libev: ev_loop recursion during release detected", loop_done != EVUNLOOP_RECURSE));	2837	assert (("libev: ev_loop recursion during release detected", loop_done != EVBREAK_RECURSE));
2289		2838
2290	loop_done = EVUNLOOP_CANCEL;	2839	loop_done = EVBREAK_CANCEL;
2291		2840
2292	EV_INVOKE_PENDING; /* in case we recurse, ensure ordering stays nice and clean */	2841	EV_INVOKE_PENDING; /* in case we recurse, ensure ordering stays nice and clean */
2293		2842
2294	do	2843	do
2295	{	2844	{
…		…
2338	/* calculate blocking time */	2887	/* calculate blocking time */
2339	{	2888	{
2340	ev_tstamp waittime = 0.;	2889	ev_tstamp waittime = 0.;
2341	ev_tstamp sleeptime = 0.;	2890	ev_tstamp sleeptime = 0.;
2342		2891
		2892	/* remember old timestamp for io_blocktime calculation */
		2893	ev_tstamp prev_mn_now = mn_now;
		2894
		2895	/* update time to cancel out callback processing overhead */
		2896	time_update (EV_A_ 1e100);
		2897
		2898	/* from now on, we want a pipe-wake-up */
		2899	pipe_write_wanted = 1;
		2900
		2901	ECB_MEMORY_FENCE; /* make sure pipe_write_wanted is visible before we check for potential skips */
		2902
2343	if (expect_true (!(flags & EVLOOP_NONBLOCK || idleall || !activecnt)))	2903	if (expect_true (!(flags & EVRUN_NOWAIT || idleall || !activecnt || pipe_write_skipped)))
2344	{	2904	{
2345	/* remember old timestamp for io_blocktime calculation */
2346	ev_tstamp prev_mn_now = mn_now;
2347
2348	/* update time to cancel out callback processing overhead */
2349	time_update (EV_A_ 1e100);
2350
2351	waittime = MAX_BLOCKTIME;	2905	waittime = MAX_BLOCKTIME;
2352		2906
2353	if (timercnt)	2907	if (timercnt)
2354	{	2908	{
2355	ev_tstamp to = ANHE_at (timers [HEAP0]) - mn_now + backend_fudge;	2909	ev_tstamp to = ANHE_at (timers [HEAP0]) - mn_now;
2356	if (waittime > to) waittime = to;	2910	if (waittime > to) waittime = to;
2357	}	2911	}
2358		2912
2359	#if EV_PERIODIC_ENABLE	2913	#if EV_PERIODIC_ENABLE
2360	if (periodiccnt)	2914	if (periodiccnt)
2361	{	2915	{
2362	ev_tstamp to = ANHE_at (periodics [HEAP0]) - ev_rt_now + backend_fudge;	2916	ev_tstamp to = ANHE_at (periodics [HEAP0]) - ev_rt_now;
2363	if (waittime > to) waittime = to;	2917	if (waittime > to) waittime = to;
2364	}	2918	}
2365	#endif	2919	#endif
2366		2920
2367	/* don't let timeouts decrease the waittime below timeout_blocktime */	2921	/* don't let timeouts decrease the waittime below timeout_blocktime */
2368	if (expect_false (waittime < timeout_blocktime))	2922	if (expect_false (waittime < timeout_blocktime))
2369	waittime = timeout_blocktime;	2923	waittime = timeout_blocktime;
		2924
		2925	/* at this point, we NEED to wait, so we have to ensure */
		2926	/* to pass a minimum nonzero value to the backend */
		2927	if (expect_false (waittime < backend_mintime))
		2928	waittime = backend_mintime;
2370		2929
2371	/* extra check because io_blocktime is commonly 0 */	2930	/* extra check because io_blocktime is commonly 0 */
2372	if (expect_false (io_blocktime))	2931	if (expect_false (io_blocktime))
2373	{	2932	{
2374	sleeptime = io_blocktime - (mn_now - prev_mn_now);	2933	sleeptime = io_blocktime - (mn_now - prev_mn_now);
2375		2934
2376	if (sleeptime > waittime - backend_fudge)	2935	if (sleeptime > waittime - backend_mintime)
2377	sleeptime = waittime - backend_fudge;	2936	sleeptime = waittime - backend_mintime;
2378		2937
2379	if (expect_true (sleeptime > 0.))	2938	if (expect_true (sleeptime > 0.))
2380	{	2939	{
2381	ev_sleep (sleeptime);	2940	ev_sleep (sleeptime);
2382	waittime -= sleeptime;	2941	waittime -= sleeptime;
…		…
2385	}	2944	}
2386		2945
2387	#if EV_FEATURE_API	2946	#if EV_FEATURE_API
2388	++loop_count;	2947	++loop_count;
2389	#endif	2948	#endif
2390	assert ((loop_done = EVUNLOOP_RECURSE, 1)); /* assert for side effect */	2949	assert ((loop_done = EVBREAK_RECURSE, 1)); /* assert for side effect */
2391	backend_poll (EV_A_ waittime);	2950	backend_poll (EV_A_ waittime);
2392	assert ((loop_done = EVUNLOOP_CANCEL, 1)); /* assert for side effect */	2951	assert ((loop_done = EVBREAK_CANCEL, 1)); /* assert for side effect */
		2952
		2953	pipe_write_wanted = 0; /* just an optimsiation, no fence needed */
		2954
		2955	if (pipe_write_skipped)
		2956	{
		2957	assert (("libev: pipe_w not active, but pipe not written", ev_is_active (&pipe_w)));
		2958	ev_feed_event (EV_A_ &pipe_w, EV_CUSTOM);
		2959	}
		2960
2393		2961
2394	/* update ev_rt_now, do magic */	2962	/* update ev_rt_now, do magic */
2395	time_update (EV_A_ waittime + sleeptime);	2963	time_update (EV_A_ waittime + sleeptime);
2396	}	2964	}
2397		2965
…		…
2415	EV_INVOKE_PENDING;	2983	EV_INVOKE_PENDING;
2416	}	2984	}
2417	while (expect_true (	2985	while (expect_true (
2418	activecnt	2986	activecnt
2419	&& !loop_done	2987	&& !loop_done
2420	&& !(flags & (EVLOOP_ONESHOT | EVLOOP_NONBLOCK))	2988	&& !(flags & (EVRUN_ONCE | EVRUN_NOWAIT))
2421	));	2989	));
2422		2990
2423	if (loop_done == EVUNLOOP_ONE)	2991	if (loop_done == EVBREAK_ONE)
2424	loop_done = EVUNLOOP_CANCEL;	2992	loop_done = EVBREAK_CANCEL;
2425		2993
2426	#if EV_FEATURE_API	2994	#if EV_FEATURE_API
2427	--loop_depth;	2995	--loop_depth;
2428	#endif	2996	#endif
2429	}	2997	}
2430		2998
2431	void	2999	void
2432	ev_unloop (EV_P_ int how)	3000	ev_break (EV_P_ int how)
2433	{	3001	{
2434	loop_done = how;	3002	loop_done = how;
2435	}	3003	}
2436		3004
2437	void	3005	void
…		…
2585	EV_FREQUENT_CHECK;	3153	EV_FREQUENT_CHECK;
2586		3154
2587	wlist_del (&anfds[w->fd].head, (WL)w);	3155	wlist_del (&anfds[w->fd].head, (WL)w);
2588	ev_stop (EV_A_ (W)w);	3156	ev_stop (EV_A_ (W)w);
2589		3157
2590	fd_change (EV_A_ w->fd, 1);	3158	fd_change (EV_A_ w->fd, EV_ANFD_REIFY);
2591		3159
2592	EV_FREQUENT_CHECK;	3160	EV_FREQUENT_CHECK;
2593	}	3161	}
2594		3162
2595	void noinline	3163	void noinline
…		…
2687	if (w->reschedule_cb)	3255	if (w->reschedule_cb)
2688	ev_at (w) = w->reschedule_cb (w, ev_rt_now);	3256	ev_at (w) = w->reschedule_cb (w, ev_rt_now);
2689	else if (w->interval)	3257	else if (w->interval)
2690	{	3258	{
2691	assert (("libev: ev_periodic_start called with negative interval value", w->interval >= 0.));	3259	assert (("libev: ev_periodic_start called with negative interval value", w->interval >= 0.));
2692	/* this formula differs from the one in periodic_reify because we do not always round up */	3260	periodic_recalc (EV_A_ w);
2693	ev_at (w) = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval;
2694	}	3261	}
2695	else	3262	else
2696	ev_at (w) = w->offset;	3263	ev_at (w) = w->offset;
2697		3264
2698	EV_FREQUENT_CHECK;	3265	EV_FREQUENT_CHECK;
…		…
2819	sa.sa_handler = ev_sighandler;	3386	sa.sa_handler = ev_sighandler;
2820	sigfillset (&sa.sa_mask);	3387	sigfillset (&sa.sa_mask);
2821	sa.sa_flags = SA_RESTART; /* if restarting works we save one iteration */	3388	sa.sa_flags = SA_RESTART; /* if restarting works we save one iteration */
2822	sigaction (w->signum, &sa, 0);	3389	sigaction (w->signum, &sa, 0);
2823		3390
		3391	if (origflags & EVFLAG_NOSIGMASK)
		3392	{
2824	sigemptyset (&sa.sa_mask);	3393	sigemptyset (&sa.sa_mask);
2825	sigaddset (&sa.sa_mask, w->signum);	3394	sigaddset (&sa.sa_mask, w->signum);
2826	sigprocmask (SIG_UNBLOCK, &sa.sa_mask, 0);	3395	sigprocmask (SIG_UNBLOCK, &sa.sa_mask, 0);
		3396	}
2827	#endif	3397	#endif
2828	}	3398	}
2829		3399
2830	EV_FREQUENT_CHECK;	3400	EV_FREQUENT_CHECK;
2831	}	3401	}
…		…
2972	if (!pend || pend == path)	3542	if (!pend || pend == path)
2973	break;	3543	break;
2974		3544
2975	*pend = 0;	3545	*pend = 0;
2976	w->wd = inotify_add_watch (fs_fd, path, mask);	3546	w->wd = inotify_add_watch (fs_fd, path, mask);
2977	}	3547	}
2978	while (w->wd < 0 && (errno == ENOENT || errno == EACCES));	3548	while (w->wd < 0 && (errno == ENOENT || errno == EACCES));
2979	}	3549	}
2980	}	3550	}
2981		3551
2982	if (w->wd >= 0)	3552	if (w->wd >= 0)
…		…
3049	infy_wd (EV_A_ ev->wd, ev->wd, ev);	3619	infy_wd (EV_A_ ev->wd, ev->wd, ev);
3050	ofs += sizeof (struct inotify_event) + ev->len;	3620	ofs += sizeof (struct inotify_event) + ev->len;
3051	}	3621	}
3052	}	3622	}
3053		3623
3054	inline_size unsigned int
3055	ev_linux_version (void)
3056	{
3057	struct utsname buf;
3058	unsigned int v;
3059	int i;
3060	char *p = buf.release;
3061
3062	if (uname (&buf))
3063	return 0;
3064
3065	for (i = 3+1; --i; )
3066	{
3067	unsigned int c = 0;
3068
3069	for (;;)
3070	{
3071	if (*p >= '0' && *p <= '9')
3072	c = c * 10 + *p++ - '0';
3073	else
3074	{
3075	p += *p == '.';
3076	break;
3077	}
3078	}
3079
3080	v = (v << 8) | c;
3081	}
3082
3083	return v;
3084	}
3085
3086	inline_size void	3624	inline_size void ecb_cold
3087	ev_check_2625 (EV_P)	3625	ev_check_2625 (EV_P)
3088	{	3626	{
3089	/* kernels < 2.6.25 are borked	3627	/* kernels < 2.6.25 are borked
3090	* http://www.ussg.indiana.edu/hypermail/linux/kernel/0711.3/1208.html	3628	* http://www.ussg.indiana.edu/hypermail/linux/kernel/0711.3/1208.html
3091	*/	3629	*/
…		…
3412		3950
3413	#if EV_EMBED_ENABLE	3951	#if EV_EMBED_ENABLE
3414	void noinline	3952	void noinline
3415	ev_embed_sweep (EV_P_ ev_embed *w)	3953	ev_embed_sweep (EV_P_ ev_embed *w)
3416	{	3954	{
3417	ev_loop (w->other, EVLOOP_NONBLOCK);	3955	ev_run (w->other, EVRUN_NOWAIT);
3418	}	3956	}
3419		3957
3420	static void	3958	static void
3421	embed_io_cb (EV_P_ ev_io *io, int revents)	3959	embed_io_cb (EV_P_ ev_io *io, int revents)
3422	{	3960	{
3423	ev_embed *w = (ev_embed *)(((char *)io) - offsetof (ev_embed, io));	3961	ev_embed *w = (ev_embed *)(((char *)io) - offsetof (ev_embed, io));
3424		3962
3425	if (ev_cb (w))	3963	if (ev_cb (w))
3426	ev_feed_event (EV_A_ (W)w, EV_EMBED);	3964	ev_feed_event (EV_A_ (W)w, EV_EMBED);
3427	else	3965	else
3428	ev_loop (w->other, EVLOOP_NONBLOCK);	3966	ev_run (w->other, EVRUN_NOWAIT);
3429	}	3967	}
3430		3968
3431	static void	3969	static void
3432	embed_prepare_cb (EV_P_ ev_prepare *prepare, int revents)	3970	embed_prepare_cb (EV_P_ ev_prepare *prepare, int revents)
3433	{	3971	{
…		…
3437	EV_P = w->other;	3975	EV_P = w->other;
3438		3976
3439	while (fdchangecnt)	3977	while (fdchangecnt)
3440	{	3978	{
3441	fd_reify (EV_A);	3979	fd_reify (EV_A);
3442	ev_loop (EV_A_ EVLOOP_NONBLOCK);	3980	ev_run (EV_A_ EVRUN_NOWAIT);
3443	}	3981	}
3444	}	3982	}
3445	}	3983	}
3446		3984
3447	static void	3985	static void
…		…
3453		3991
3454	{	3992	{
3455	EV_P = w->other;	3993	EV_P = w->other;
3456		3994
3457	ev_loop_fork (EV_A);	3995	ev_loop_fork (EV_A);
3458	ev_loop (EV_A_ EVLOOP_NONBLOCK);	3996	ev_run (EV_A_ EVRUN_NOWAIT);
3459	}	3997	}
3460		3998
3461	ev_embed_start (EV_A_ w);	3999	ev_embed_start (EV_A_ w);
3462	}	4000	}
3463		4001
…		…
3555		4093
3556	EV_FREQUENT_CHECK;	4094	EV_FREQUENT_CHECK;
3557	}	4095	}
3558	#endif	4096	#endif
3559		4097
		4098	#if EV_CLEANUP_ENABLE
		4099	void
		4100	ev_cleanup_start (EV_P_ ev_cleanup *w)
		4101	{
		4102	if (expect_false (ev_is_active (w)))
		4103	return;
		4104
		4105	EV_FREQUENT_CHECK;
		4106
		4107	ev_start (EV_A_ (W)w, ++cleanupcnt);
		4108	array_needsize (ev_cleanup *, cleanups, cleanupmax, cleanupcnt, EMPTY2);
		4109	cleanups [cleanupcnt - 1] = w;
		4110
		4111	/* cleanup watchers should never keep a refcount on the loop */
		4112	ev_unref (EV_A);
		4113	EV_FREQUENT_CHECK;
		4114	}
		4115
		4116	void
		4117	ev_cleanup_stop (EV_P_ ev_cleanup *w)
		4118	{
		4119	clear_pending (EV_A_ (W)w);
		4120	if (expect_false (!ev_is_active (w)))
		4121	return;
		4122
		4123	EV_FREQUENT_CHECK;
		4124	ev_ref (EV_A);
		4125
		4126	{
		4127	int active = ev_active (w);
		4128
		4129	cleanups [active - 1] = cleanups [--cleanupcnt];
		4130	ev_active (cleanups [active - 1]) = active;
		4131	}
		4132
		4133	ev_stop (EV_A_ (W)w);
		4134
		4135	EV_FREQUENT_CHECK;
		4136	}
		4137	#endif
		4138
3560	#if EV_ASYNC_ENABLE	4139	#if EV_ASYNC_ENABLE
3561	void	4140	void
3562	ev_async_start (EV_P_ ev_async *w)	4141	ev_async_start (EV_P_ ev_async *w)
3563	{	4142	{
3564	if (expect_false (ev_is_active (w)))	4143	if (expect_false (ev_is_active (w)))
3565	return;	4144	return;
		4145
		4146	w->sent = 0;
3566		4147
3567	evpipe_init (EV_A);	4148	evpipe_init (EV_A);
3568		4149
3569	EV_FREQUENT_CHECK;	4150	EV_FREQUENT_CHECK;
3570		4151
…		…
3673	}	4254	}
3674		4255
3675	/*****************************************************************************/	4256	/*****************************************************************************/
3676		4257
3677	#if EV_WALK_ENABLE	4258	#if EV_WALK_ENABLE
3678	void	4259	void ecb_cold
3679	ev_walk (EV_P_ int types, void (*cb)(EV_P_ int type, void *w))	4260	ev_walk (EV_P_ int types, void (*cb)(EV_P_ int type, void *w))
3680	{	4261	{
3681	int i, j;	4262	int i, j;
3682	ev_watcher_list *wl, *wn;	4263	ev_watcher_list *wl, *wn;
3683		4264
…		…
3727	cb (EV_A_ EV_PERIODIC, ANHE_w (periodics [i]));	4308	cb (EV_A_ EV_PERIODIC, ANHE_w (periodics [i]));
3728	#endif	4309	#endif
3729		4310
3730	#if EV_IDLE_ENABLE	4311	#if EV_IDLE_ENABLE
3731	if (types & EV_IDLE)	4312	if (types & EV_IDLE)
3732	for (j = NUMPRI; i--; )	4313	for (j = NUMPRI; j--; )
3733	for (i = idlecnt [j]; i--; )	4314	for (i = idlecnt [j]; i--; )
3734	cb (EV_A_ EV_IDLE, idles [j][i]);	4315	cb (EV_A_ EV_IDLE, idles [j][i]);
3735	#endif	4316	#endif
3736		4317
3737	#if EV_FORK_ENABLE	4318	#if EV_FORK_ENABLE
…		…
3790		4371
3791	#if EV_MULTIPLICITY	4372	#if EV_MULTIPLICITY
3792	#include "ev_wrap.h"	4373	#include "ev_wrap.h"
3793	#endif	4374	#endif
3794		4375
3795	#ifdef __cplusplus	4376	EV_CPP(})
3796	}
3797	#endif
3798		4377

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