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Comparing libev/ev.c (file contents):
Revision 1.347 by root, Fri Oct 15 22:44:41 2010 UTC vs.
Revision 1.390 by root, Thu Aug 4 11:58:02 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>
…		…
234	/* to make it compile regardless, just remove the above line, */	237	/* to make it compile regardless, just remove the above line, */
235	/* but consider reporting it, too! :) */	238	/* but consider reporting it, too! :) */
236	# define EV_NSIG 65	239	# define EV_NSIG 65
237	#endif	240	#endif
238		241
		242	#ifndef EV_USE_FLOOR
		243	# define EV_USE_FLOOR 0
		244	#endif
		245
239	#ifndef EV_USE_CLOCK_SYSCALL	246	#ifndef EV_USE_CLOCK_SYSCALL
240	# if __linux && __GLIBC__ >= 2	247	# if __linux && __GLIBC__ >= 2
241	# define EV_USE_CLOCK_SYSCALL EV_FEATURE_OS	248	# define EV_USE_CLOCK_SYSCALL EV_FEATURE_OS
242	# else	249	# else
243	# define EV_USE_CLOCK_SYSCALL 0	250	# define EV_USE_CLOCK_SYSCALL 0
…		…
378	# undef EV_USE_INOTIFY	385	# undef EV_USE_INOTIFY
379	# define EV_USE_INOTIFY 0	386	# define EV_USE_INOTIFY 0
380	#endif	387	#endif
381		388
382	#if !EV_USE_NANOSLEEP	389	#if !EV_USE_NANOSLEEP
383	# ifndef _WIN32	390	/* hp-ux has it in sys/time.h, which we unconditionally include above */
		391	# if !defined(_WIN32) && !defined(__hpux)
384	# include <sys/select.h>	392	# include <sys/select.h>
385	# endif	393	# endif
386	#endif	394	#endif
387		395
388	#if EV_USE_INOTIFY	396	#if EV_USE_INOTIFY
389	# include <sys/utsname.h>
390	# include <sys/statfs.h>	397	# include <sys/statfs.h>
391	# include <sys/inotify.h>	398	# include <sys/inotify.h>
392	/* 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 */
393	# ifndef IN_DONT_FOLLOW	400	# ifndef IN_DONT_FOLLOW
394	# undef EV_USE_INOTIFY	401	# undef EV_USE_INOTIFY
…		…
411	# define EFD_CLOEXEC O_CLOEXEC	418	# define EFD_CLOEXEC O_CLOEXEC
412	# else	419	# else
413	# define EFD_CLOEXEC 02000000	420	# define EFD_CLOEXEC 02000000
414	# endif	421	# endif
415	# endif	422	# endif
416	# ifdef __cplusplus
417	extern "C" {
418	# endif
419	int (eventfd) (unsigned int initval, int flags);	423	EV_CPP(extern "C") int (eventfd) (unsigned int initval, int flags);
420	# ifdef __cplusplus
421	}
422	# endif
423	#endif	424	#endif
424		425
425	#if EV_USE_SIGNALFD	426	#if EV_USE_SIGNALFD
426	/* 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 */
427	# include <stdint.h>	428	# include <stdint.h>
…		…
433	# define SFD_CLOEXEC O_CLOEXEC	434	# define SFD_CLOEXEC O_CLOEXEC
434	# else	435	# else
435	# define SFD_CLOEXEC 02000000	436	# define SFD_CLOEXEC 02000000
436	# endif	437	# endif
437	# endif	438	# endif
438	# ifdef __cplusplus
439	extern "C" {
440	# endif
441	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);
442		440
443	struct signalfd_siginfo	441	struct signalfd_siginfo
444	{	442	{
445	uint32_t ssi_signo;	443	uint32_t ssi_signo;
446	char pad[128 - sizeof (uint32_t)];	444	char pad[128 - sizeof (uint32_t)];
447	};	445	};
448	# ifdef __cplusplus
449	}
450	# endif
451	#endif	446	#endif
452		447
453	/**/	448	/**/
454		449
455	#if EV_VERIFY >= 3	450	#if EV_VERIFY >= 3
…		…
457	#else	452	#else
458	# define EV_FREQUENT_CHECK do { } while (0)	453	# define EV_FREQUENT_CHECK do { } while (0)
459	#endif	454	#endif
460		455
461	/*	456	/*
462	* This is used to avoid floating point rounding problems.	457	* This is used to work around floating point rounding problems.
463	* It is added to ev_rt_now when scheduling periodics
464	* to ensure progress, time-wise, even when rounding
465	* errors are against us.
466	* This value is good at least till the year 4000.	458	* This value is good at least till the year 4000.
467	* Better solutions welcome.
468	*/	459	*/
469	#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 */
470		462
471	#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) */
472	#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) */
473		465
474	#define EV_TV_SET(tv,t) do { tv.tv_sec = (long)t; tv.tv_usec = (long)((t - tv.tv_sec) * 1e6); } while (0)	466	#define EV_TV_SET(tv,t) do { tv.tv_sec = (long)t; tv.tv_usec = (long)((t - tv.tv_sec) * 1e6); } while (0)
475	#define EV_TS_SET(ts,t) do { ts.tv_sec = (long)t; tv.tv_nsec = (long)((t - tv.tv_sec) * 1e9); } 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)
476		468
477	#if __GNUC__ >= 4	469	/* the following are taken from libecb */
478	# define expect(expr,value) __builtin_expect ((expr),(value))	470	/* ecb.h start */
479	# define noinline __attribute__ ((noinline))	471
		472	/* many compilers define _GNUC_ to some versions but then only implement
		473	* what their idiot authors think are the "more important" extensions,
		474	* causing enourmous grief in return for some better fake benchmark numbers.
		475	* or so.
		476	* we try to detect these and simply assume they are not gcc - if they have
		477	* an issue with that they should have done it right in the first place.
		478	*/
		479	#ifndef ECB_GCC_VERSION
		480	#if !defined(__GNUC_MINOR__) || defined(__INTEL_COMPILER) || defined(__SUNPRO_C) || defined(__SUNPRO_CC) || defined(__llvm__) || defined(__clang__)
		481	#define ECB_GCC_VERSION(major,minor) 0
		482	#else
		483	#define ECB_GCC_VERSION(major,minor) (__GNUC__ > (major) || (__GNUC__ == (major) && __GNUC_MINOR__ >= (minor)))
		484	#endif
		485	#endif
		486
		487	#if __cplusplus
		488	#define ecb_inline static inline
		489	#elif ECB_GCC_VERSION(2,5)
		490	#define ecb_inline static __inline__
		491	#elif ECB_C99
		492	#define ecb_inline static inline
480	#else	493	#else
481	# define expect(expr,value) (expr)	494	#define ecb_inline static
482	# define noinline
483	# if __STDC_VERSION__ < 199901L && __GNUC__ < 2
484	# define inline
485	# endif	495	#endif
		496
		497	#ifndef ECB_MEMORY_FENCE
		498	#if ECB_GCC_VERSION(2,5)
		499	#if __x86
		500	#define ECB_MEMORY_FENCE __asm__ __volatile__ ("lock; orb $0, -1(%%esp)" : : : "memory")
		501	#define ECB_MEMORY_FENCE_ACQUIRE ECB_MEMORY_FENCE
		502	#define ECB_MEMORY_FENCE_RELEASE ECB_MEMORY_FENCE /* better be safe than sorry */
		503	#elif __amd64
		504	#define ECB_MEMORY_FENCE __asm__ __volatile__ ("mfence" : : : "memory")
		505	#define ECB_MEMORY_FENCE_ACQUIRE __asm__ __volatile__ ("lfence" : : : "memory")
		506	#define ECB_MEMORY_FENCE_RELEASE __asm__ __volatile__ ("sfence")
		507	#endif
486	#endif	508	#endif
		509	#endif
487		510
		511	#ifndef ECB_MEMORY_FENCE
		512	#if ECB_GCC_VERSION(4,4)
		513	#define ECB_MEMORY_FENCE __sync_synchronize ()
		514	#define ECB_MEMORY_FENCE_ACQUIRE ({ char dummy = 0; __sync_lock_test_and_set (&dummy, 1); })
		515	#define ECB_MEMORY_FENCE_RELEASE ({ char dummy = 1; __sync_lock_release (&dummy ); })
		516	#elif _MSC_VER >= 1400 /* VC++ 2005 */
		517	#pragma intrinsic(_ReadBarrier,_WriteBarrier,_ReadWriteBarrier)
		518	#define ECB_MEMORY_FENCE _ReadWriteBarrier ()
		519	#define ECB_MEMORY_FENCE_ACQUIRE _ReadWriteBarrier () /* according to msdn, _ReadBarrier is not a load fence */
		520	#define ECB_MEMORY_FENCE_RELEASE _WriteBarrier ()
		521	#elif defined(_WIN32)
		522	#include <WinNT.h>
		523	#define ECB_MEMORY_FENCE MemoryBarrier ()
		524	#define ECB_MEMORY_FENCE_ACQUIRE ECB_MEMORY_FENCE
		525	#define ECB_MEMORY_FENCE_RELEASE ECB_MEMORY_FENCE
		526	#endif
		527	#endif
		528
		529	#ifndef ECB_MEMORY_FENCE
		530	#include <pthread.h>
		531
		532	static pthread_mutex_t ecb_mf_lock = PTHREAD_MUTEX_INITIALIZER;
		533	#define ECB_MEMORY_FENCE do { pthread_mutex_lock (&ecb_mf_lock); pthread_mutex_unlock (&ecb_mf_lock); } while (0)
		534	#define ECB_MEMORY_FENCE_ACQUIRE ECB_MEMORY_FENCE
		535	#define ECB_MEMORY_FENCE_RELEASE ECB_MEMORY_FENCE
		536	#endif
		537
		538	#if ECB_GCC_VERSION(3,1)
		539	#define ecb_attribute(attrlist) __attribute__(attrlist)
		540	#define ecb_is_constant(expr) __builtin_constant_p (expr)
		541	#define ecb_expect(expr,value) __builtin_expect ((expr),(value))
		542	#define ecb_prefetch(addr,rw,locality) __builtin_prefetch (addr, rw, locality)
		543	#else
		544	#define ecb_attribute(attrlist)
		545	#define ecb_is_constant(expr) 0
		546	#define ecb_expect(expr,value) (expr)
		547	#define ecb_prefetch(addr,rw,locality)
		548	#endif
		549
		550	#define ecb_noinline ecb_attribute ((__noinline__))
		551	#define ecb_noreturn ecb_attribute ((__noreturn__))
		552	#define ecb_unused ecb_attribute ((__unused__))
		553	#define ecb_const ecb_attribute ((__const__))
		554	#define ecb_pure ecb_attribute ((__pure__))
		555
		556	#if ECB_GCC_VERSION(4,3)
		557	#define ecb_artificial ecb_attribute ((__artificial__))
		558	#define ecb_hot ecb_attribute ((__hot__))
		559	#define ecb_cold ecb_attribute ((__cold__))
		560	#else
		561	#define ecb_artificial
		562	#define ecb_hot
		563	#define ecb_cold
		564	#endif
		565
		566	/* put around conditional expressions if you are very sure that the */
		567	/* expression is mostly true or mostly false. note that these return */
		568	/* booleans, not the expression. */
488	#define expect_false(expr) expect ((expr) != 0, 0)	569	#define ecb_expect_false(expr) ecb_expect (!!(expr), 0)
489	#define expect_true(expr) expect ((expr) != 0, 1)	570	#define ecb_expect_true(expr) ecb_expect (!!(expr), 1)
		571	/* ecb.h end */
		572
		573	#define expect_false(cond) ecb_expect_false (cond)
		574	#define expect_true(cond) ecb_expect_true (cond)
		575	#define noinline ecb_noinline
		576
490	#define inline_size static inline	577	#define inline_size ecb_inline
491		578
492	#if EV_FEATURE_CODE	579	#if EV_FEATURE_CODE
493	# define inline_speed static inline	580	# define inline_speed ecb_inline
494	#else	581	#else
495	# define inline_speed static noinline	582	# define inline_speed static noinline
496	#endif	583	#endif
497		584
498	#define NUMPRI (EV_MAXPRI - EV_MINPRI + 1)	585	#define NUMPRI (EV_MAXPRI - EV_MINPRI + 1)
…		…
537	# include "ev_win32.c"	624	# include "ev_win32.c"
538	#endif	625	#endif
539		626
540	/*****************************************************************************/	627	/*****************************************************************************/
541		628
		629	/* define a suitable floor function (only used by periodics atm) */
		630
		631	#if EV_USE_FLOOR
		632	# include <math.h>
		633	# define ev_floor(v) floor (v)
		634	#else
		635
		636	#include <float.h>
		637
		638	/* a floor() replacement function, should be independent of ev_tstamp type */
		639	static ev_tstamp noinline
		640	ev_floor (ev_tstamp v)
		641	{
		642	/* the choice of shift factor is not terribly important */
		643	#if FLT_RADIX != 2 /* assume FLT_RADIX == 10 */
		644	const ev_tstamp shift = sizeof (unsigned long) >= 8 ? 10000000000000000000. : 1000000000.;
		645	#else
		646	const ev_tstamp shift = sizeof (unsigned long) >= 8 ? 18446744073709551616. : 4294967296.;
		647	#endif
		648
		649	/* argument too large for an unsigned long? */
		650	if (expect_false (v >= shift))
		651	{
		652	ev_tstamp f;
		653
		654	if (v == v - 1.)
		655	return v; /* very large number */
		656
		657	f = shift * ev_floor (v * (1. / shift));
		658	return f + ev_floor (v - f);
		659	}
		660
		661	/* special treatment for negative args? */
		662	if (expect_false (v < 0.))
		663	{
		664	ev_tstamp f = -ev_floor (-v);
		665
		666	return f - (f == v ? 0 : 1);
		667	}
		668
		669	/* fits into an unsigned long */
		670	return (unsigned long)v;
		671	}
		672
		673	#endif
		674
		675	/*****************************************************************************/
		676
		677	#ifdef __linux
		678	# include <sys/utsname.h>
		679	#endif
		680
		681	static unsigned int noinline ecb_cold
		682	ev_linux_version (void)
		683	{
		684	#ifdef __linux
		685	unsigned int v = 0;
		686	struct utsname buf;
		687	int i;
		688	char *p = buf.release;
		689
		690	if (uname (&buf))
		691	return 0;
		692
		693	for (i = 3+1; --i; )
		694	{
		695	unsigned int c = 0;
		696
		697	for (;;)
		698	{
		699	if (*p >= '0' && *p <= '9')
		700	c = c * 10 + *p++ - '0';
		701	else
		702	{
		703	p += *p == '.';
		704	break;
		705	}
		706	}
		707
		708	v = (v << 8) | c;
		709	}
		710
		711	return v;
		712	#else
		713	return 0;
		714	#endif
		715	}
		716
		717	/*****************************************************************************/
		718
542	#if EV_AVOID_STDIO	719	#if EV_AVOID_STDIO
543	static void noinline	720	static void noinline ecb_cold
544	ev_printerr (const char *msg)	721	ev_printerr (const char *msg)
545	{	722	{
546	write (STDERR_FILENO, msg, strlen (msg));	723	write (STDERR_FILENO, msg, strlen (msg));
547	}	724	}
548	#endif	725	#endif
549		726
550	static void (*syserr_cb)(const char *msg);	727	static void (*syserr_cb)(const char *msg);
551		728
552	void	729	void ecb_cold
553	ev_set_syserr_cb (void (*cb)(const char *msg))	730	ev_set_syserr_cb (void (*cb)(const char *msg))
554	{	731	{
555	syserr_cb = cb;	732	syserr_cb = cb;
556	}	733	}
557		734
558	static void noinline	735	static void noinline ecb_cold
559	ev_syserr (const char *msg)	736	ev_syserr (const char *msg)
560	{	737	{
561	if (!msg)	738	if (!msg)
562	msg = "(libev) system error";	739	msg = "(libev) system error";
563		740
564	if (syserr_cb)	741	if (syserr_cb)
565	syserr_cb (msg);	742	syserr_cb (msg);
566	else	743	else
567	{	744	{
568	#if EV_AVOID_STDIO	745	#if EV_AVOID_STDIO
569	const char *err = strerror (errno);
570
571	ev_printerr (msg);	746	ev_printerr (msg);
572	ev_printerr (": ");	747	ev_printerr (": ");
573	ev_printerr (err);	748	ev_printerr (strerror (errno));
574	ev_printerr ("\n");	749	ev_printerr ("\n");
575	#else	750	#else
576	perror (msg);	751	perror (msg);
577	#endif	752	#endif
578	abort ();	753	abort ();
…		…
598	#endif	773	#endif
599	}	774	}
600		775
601	static void *(*alloc)(void *ptr, long size) = ev_realloc_emul;	776	static void *(*alloc)(void *ptr, long size) = ev_realloc_emul;
602		777
603	void	778	void ecb_cold
604	ev_set_allocator (void *(*cb)(void *ptr, long size))	779	ev_set_allocator (void *(*cb)(void *ptr, long size))
605	{	780	{
606	alloc = cb;	781	alloc = cb;
607	}	782	}
608		783
…		…
612	ptr = alloc (ptr, size);	787	ptr = alloc (ptr, size);
613		788
614	if (!ptr && size)	789	if (!ptr && size)
615	{	790	{
616	#if EV_AVOID_STDIO	791	#if EV_AVOID_STDIO
617	ev_printerr ("libev: memory allocation failed, aborting.\n");	792	ev_printerr ("(libev) memory allocation failed, aborting.\n");
618	#else	793	#else
619	fprintf (stderr, "libev: cannot allocate %ld bytes, aborting.", size);	794	fprintf (stderr, "(libev) cannot allocate %ld bytes, aborting.", size);
620	#endif	795	#endif
621	abort ();	796	abort ();
622	}	797	}
623		798
624	return ptr;	799	return ptr;
…		…
641	unsigned char emask; /* the epoll backend stores the actual kernel mask in here */	816	unsigned char emask; /* the epoll backend stores the actual kernel mask in here */
642	unsigned char unused;	817	unsigned char unused;
643	#if EV_USE_EPOLL	818	#if EV_USE_EPOLL
644	unsigned int egen; /* generation counter to counter epoll bugs */	819	unsigned int egen; /* generation counter to counter epoll bugs */
645	#endif	820	#endif
646	#if EV_SELECT_IS_WINSOCKET	821	#if EV_SELECT_IS_WINSOCKET || EV_USE_IOCP
647	SOCKET handle;	822	SOCKET handle;
		823	#endif
		824	#if EV_USE_IOCP
		825	OVERLAPPED or, ow;
648	#endif	826	#endif
649	} ANFD;	827	} ANFD;
650		828
651	/* stores the pending event set for a given watcher */	829	/* stores the pending event set for a given watcher */
652	typedef struct	830	typedef struct
…		…
717	# define EV_RELEASE_CB (void)0	895	# define EV_RELEASE_CB (void)0
718	# define EV_ACQUIRE_CB (void)0	896	# define EV_ACQUIRE_CB (void)0
719	# define EV_INVOKE_PENDING ev_invoke_pending (EV_A)	897	# define EV_INVOKE_PENDING ev_invoke_pending (EV_A)
720	#endif	898	#endif
721		899
722	#define EVUNLOOP_RECURSE 0x80	900	#define EVBREAK_RECURSE 0x80
723		901
724	/*****************************************************************************/	902	/*****************************************************************************/
725		903
726	#ifndef EV_HAVE_EV_TIME	904	#ifndef EV_HAVE_EV_TIME
727	ev_tstamp	905	ev_tstamp
…		…
771	if (delay > 0.)	949	if (delay > 0.)
772	{	950	{
773	#if EV_USE_NANOSLEEP	951	#if EV_USE_NANOSLEEP
774	struct timespec ts;	952	struct timespec ts;
775		953
776	EV_SET_TS (ts, delay);	954	EV_TS_SET (ts, delay);
777	nanosleep (&ts, 0);	955	nanosleep (&ts, 0);
778	#elif defined(_WIN32)	956	#elif defined(_WIN32)
779	Sleep ((unsigned long)(delay * 1e3));	957	Sleep ((unsigned long)(delay * 1e3));
780	#else	958	#else
781	struct timeval tv;	959	struct timeval tv;
782		960
783	/* here we rely on sys/time.h + sys/types.h + unistd.h providing select */	961	/* here we rely on sys/time.h + sys/types.h + unistd.h providing select */
784	/* something not guaranteed by newer posix versions, but guaranteed */	962	/* something not guaranteed by newer posix versions, but guaranteed */
785	/* by older ones */	963	/* by older ones */
786	EV_SET_TV (tv, delay);	964	EV_TV_SET (tv, delay);
787	select (0, 0, 0, 0, &tv);	965	select (0, 0, 0, 0, &tv);
788	#endif	966	#endif
789	}	967	}
790	}	968	}
791		969
…		…
814	}	992	}
815		993
816	return ncur;	994	return ncur;
817	}	995	}
818		996
819	static noinline void *	997	static void * noinline ecb_cold
820	array_realloc (int elem, void *base, int *cur, int cnt)	998	array_realloc (int elem, void *base, int *cur, int cnt)
821	{	999	{
822	*cur = array_nextsize (elem, *cur, cnt);	1000	*cur = array_nextsize (elem, *cur, cnt);
823	return ev_realloc (base, elem * *cur);	1001	return ev_realloc (base, elem * *cur);
824	}	1002	}
…		…
827	memset ((void *)(base), 0, sizeof (*(base)) * (count))	1005	memset ((void *)(base), 0, sizeof (*(base)) * (count))
828		1006
829	#define array_needsize(type,base,cur,cnt,init) \	1007	#define array_needsize(type,base,cur,cnt,init) \
830	if (expect_false ((cnt) > (cur))) \	1008	if (expect_false ((cnt) > (cur))) \
831	{ \	1009	{ \
832	int ocur_ = (cur); \	1010	int ecb_unused ocur_ = (cur); \
833	(base) = (type *)array_realloc \	1011	(base) = (type *)array_realloc \
834	(sizeof (type), (base), &(cur), (cnt)); \	1012	(sizeof (type), (base), &(cur), (cnt)); \
835	init ((base) + (ocur_), (cur) - ocur_); \	1013	init ((base) + (ocur_), (cur) - ocur_); \
836	}	1014	}
837		1015
…		…
937	inline_size void	1115	inline_size void
938	fd_reify (EV_P)	1116	fd_reify (EV_P)
939	{	1117	{
940	int i;	1118	int i;
941		1119
		1120	#if EV_SELECT_IS_WINSOCKET || EV_USE_IOCP
		1121	for (i = 0; i < fdchangecnt; ++i)
		1122	{
		1123	int fd = fdchanges [i];
		1124	ANFD *anfd = anfds + fd;
		1125
		1126	if (anfd->reify & EV__IOFDSET && anfd->head)
		1127	{
		1128	SOCKET handle = EV_FD_TO_WIN32_HANDLE (fd);
		1129
		1130	if (handle != anfd->handle)
		1131	{
		1132	unsigned long arg;
		1133
		1134	assert (("libev: only socket fds supported in this configuration", ioctlsocket (handle, FIONREAD, &arg) == 0));
		1135
		1136	/* handle changed, but fd didn't - we need to do it in two steps */
		1137	backend_modify (EV_A_ fd, anfd->events, 0);
		1138	anfd->events = 0;
		1139	anfd->handle = handle;
		1140	}
		1141	}
		1142	}
		1143	#endif
		1144
942	for (i = 0; i < fdchangecnt; ++i)	1145	for (i = 0; i < fdchangecnt; ++i)
943	{	1146	{
944	int fd = fdchanges [i];	1147	int fd = fdchanges [i];
945	ANFD *anfd = anfds + fd;	1148	ANFD *anfd = anfds + fd;
946	ev_io *w;	1149	ev_io *w;
947		1150
948	unsigned char events = 0;	1151	unsigned char o_events = anfd->events;
		1152	unsigned char o_reify = anfd->reify;
949		1153
950	for (w = (ev_io *)anfd->head; w; w = (ev_io *)((WL)w)->next)	1154	anfd->reify = 0;
951	events |= (unsigned char)w->events;
952		1155
953	#if EV_SELECT_IS_WINSOCKET	1156	/*if (expect_true (o_reify & EV_ANFD_REIFY)) probably a deoptimisation */
954	if (events)
955	{	1157	{
956	unsigned long arg;	1158	anfd->events = 0;
957	anfd->handle = EV_FD_TO_WIN32_HANDLE (fd);	1159
958	assert (("libev: only socket fds supported in this configuration", ioctlsocket (anfd->handle, FIONREAD, &arg) == 0));	1160	for (w = (ev_io *)anfd->head; w; w = (ev_io *)((WL)w)->next)
		1161	anfd->events |= (unsigned char)w->events;
		1162
		1163	if (o_events != anfd->events)
		1164	o_reify = EV__IOFDSET; /* actually |= */
959	}	1165	}
960	#endif
961		1166
962	{	1167	if (o_reify & EV__IOFDSET)
963	unsigned char o_events = anfd->events;
964	unsigned char o_reify = anfd->reify;
965
966	anfd->reify = 0;
967	anfd->events = events;
968
969	if (o_events != events || o_reify & EV__IOFDSET)
970	backend_modify (EV_A_ fd, o_events, events);	1168	backend_modify (EV_A_ fd, o_events, anfd->events);
971	}
972	}	1169	}
973		1170
974	fdchangecnt = 0;	1171	fdchangecnt = 0;
975	}	1172	}
976		1173
…		…
988	fdchanges [fdchangecnt - 1] = fd;	1185	fdchanges [fdchangecnt - 1] = fd;
989	}	1186	}
990	}	1187	}
991		1188
992	/* the given fd is invalid/unusable, so make sure it doesn't hurt us anymore */	1189	/* the given fd is invalid/unusable, so make sure it doesn't hurt us anymore */
993	inline_speed void	1190	inline_speed void ecb_cold
994	fd_kill (EV_P_ int fd)	1191	fd_kill (EV_P_ int fd)
995	{	1192	{
996	ev_io *w;	1193	ev_io *w;
997		1194
998	while ((w = (ev_io *)anfds [fd].head))	1195	while ((w = (ev_io *)anfds [fd].head))
…		…
1001	ev_feed_event (EV_A_ (W)w, EV_ERROR | EV_READ | EV_WRITE);	1198	ev_feed_event (EV_A_ (W)w, EV_ERROR | EV_READ | EV_WRITE);
1002	}	1199	}
1003	}	1200	}
1004		1201
1005	/* check whether the given fd is actually valid, for error recovery */	1202	/* check whether the given fd is actually valid, for error recovery */
1006	inline_size int	1203	inline_size int ecb_cold
1007	fd_valid (int fd)	1204	fd_valid (int fd)
1008	{	1205	{
1009	#ifdef _WIN32	1206	#ifdef _WIN32
1010	return EV_FD_TO_WIN32_HANDLE (fd) != -1;	1207	return EV_FD_TO_WIN32_HANDLE (fd) != -1;
1011	#else	1208	#else
1012	return fcntl (fd, F_GETFD) != -1;	1209	return fcntl (fd, F_GETFD) != -1;
1013	#endif	1210	#endif
1014	}	1211	}
1015		1212
1016	/* called on EBADF to verify fds */	1213	/* called on EBADF to verify fds */
1017	static void noinline	1214	static void noinline ecb_cold
1018	fd_ebadf (EV_P)	1215	fd_ebadf (EV_P)
1019	{	1216	{
1020	int fd;	1217	int fd;
1021		1218
1022	for (fd = 0; fd < anfdmax; ++fd)	1219	for (fd = 0; fd < anfdmax; ++fd)
…		…
1024	if (!fd_valid (fd) && errno == EBADF)	1221	if (!fd_valid (fd) && errno == EBADF)
1025	fd_kill (EV_A_ fd);	1222	fd_kill (EV_A_ fd);
1026	}	1223	}
1027		1224
1028	/* called on ENOMEM in select/poll to kill some fds and retry */	1225	/* called on ENOMEM in select/poll to kill some fds and retry */
1029	static void noinline	1226	static void noinline ecb_cold
1030	fd_enomem (EV_P)	1227	fd_enomem (EV_P)
1031	{	1228	{
1032	int fd;	1229	int fd;
1033		1230
1034	for (fd = anfdmax; fd--; )	1231	for (fd = anfdmax; fd--; )
…		…
1229		1426
1230	/*****************************************************************************/	1427	/*****************************************************************************/
1231		1428
1232	#if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE	1429	#if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE
1233		1430
1234	static void noinline	1431	static void noinline ecb_cold
1235	evpipe_init (EV_P)	1432	evpipe_init (EV_P)
1236	{	1433	{
1237	if (!ev_is_active (&pipe_w))	1434	if (!ev_is_active (&pipe_w))
1238	{	1435	{
1239	# if EV_USE_EVENTFD	1436	# if EV_USE_EVENTFD
…		…
1261	ev_io_start (EV_A_ &pipe_w);	1458	ev_io_start (EV_A_ &pipe_w);
1262	ev_unref (EV_A); /* watcher should not keep loop alive */	1459	ev_unref (EV_A); /* watcher should not keep loop alive */
1263	}	1460	}
1264	}	1461	}
1265		1462
1266	inline_size void	1463	inline_speed void
1267	evpipe_write (EV_P_ EV_ATOMIC_T *flag)	1464	evpipe_write (EV_P_ EV_ATOMIC_T *flag)
1268	{	1465	{
1269	if (!*flag)	1466	if (expect_true (*flag))
		1467	return;
		1468
		1469	*flag = 1;
		1470
		1471	ECB_MEMORY_FENCE_RELEASE; /* make sure flag is visible before the wakeup */
		1472
		1473	pipe_write_skipped = 1;
		1474
		1475	ECB_MEMORY_FENCE; /* make sure pipe_write_skipped is visible before we check pipe_write_wanted */
		1476
		1477	if (pipe_write_wanted)
1270	{	1478	{
		1479	int old_errno;
		1480
		1481	pipe_write_skipped = 0; /* just an optimsiation, no fence needed */
		1482
1271	int old_errno = errno; /* save errno because write might clobber it */	1483	old_errno = errno; /* save errno because write will clobber it */
1272	char dummy;
1273
1274	*flag = 1;
1275		1484
1276	#if EV_USE_EVENTFD	1485	#if EV_USE_EVENTFD
1277	if (evfd >= 0)	1486	if (evfd >= 0)
1278	{	1487	{
1279	uint64_t counter = 1;	1488	uint64_t counter = 1;
1280	write (evfd, &counter, sizeof (uint64_t));	1489	write (evfd, &counter, sizeof (uint64_t));
1281	}	1490	}
1282	else	1491	else
1283	#endif	1492	#endif
		1493	{
1284	/* win32 people keep sending patches that change this write() to send() */	1494	/* win32 people keep sending patches that change this write() to send() */
1285	/* and then run away. but send() is wrong, it wants a socket handle on win32 */	1495	/* and then run away. but send() is wrong, it wants a socket handle on win32 */
1286	/* so when you think this write should be a send instead, please find out */	1496	/* so when you think this write should be a send instead, please find out */
1287	/* where your send() is from - it's definitely not the microsoft send, and */	1497	/* where your send() is from - it's definitely not the microsoft send, and */
1288	/* tell me. thank you. */	1498	/* tell me. thank you. */
1289	write (evpipe [1], &dummy, 1);	1499	write (evpipe [1], &(evpipe [1]), 1);
		1500	}
1290		1501
1291	errno = old_errno;	1502	errno = old_errno;
1292	}	1503	}
1293	}	1504	}
1294		1505
…		…
1297	static void	1508	static void
1298	pipecb (EV_P_ ev_io *iow, int revents)	1509	pipecb (EV_P_ ev_io *iow, int revents)
1299	{	1510	{
1300	int i;	1511	int i;
1301		1512
		1513	if (revents & EV_READ)
		1514	{
1302	#if EV_USE_EVENTFD	1515	#if EV_USE_EVENTFD
1303	if (evfd >= 0)	1516	if (evfd >= 0)
1304	{	1517	{
1305	uint64_t counter;	1518	uint64_t counter;
1306	read (evfd, &counter, sizeof (uint64_t));	1519	read (evfd, &counter, sizeof (uint64_t));
1307	}	1520	}
1308	else	1521	else
1309	#endif	1522	#endif
1310	{	1523	{
1311	char dummy;	1524	char dummy;
1312	/* see discussion in evpipe_write when you think this read should be recv in win32 */	1525	/* see discussion in evpipe_write when you think this read should be recv in win32 */
1313	read (evpipe [0], &dummy, 1);	1526	read (evpipe [0], &dummy, 1);
		1527	}
1314	}	1528	}
1315		1529
		1530	pipe_write_skipped = 0;
		1531
		1532	#if EV_SIGNAL_ENABLE
1316	if (sig_pending)	1533	if (sig_pending)
1317	{	1534	{
1318	sig_pending = 0;	1535	sig_pending = 0;
1319		1536
1320	for (i = EV_NSIG - 1; i--; )	1537	for (i = EV_NSIG - 1; i--; )
1321	if (expect_false (signals [i].pending))	1538	if (expect_false (signals [i].pending))
1322	ev_feed_signal_event (EV_A_ i + 1);	1539	ev_feed_signal_event (EV_A_ i + 1);
1323	}	1540	}
		1541	#endif
1324		1542
1325	#if EV_ASYNC_ENABLE	1543	#if EV_ASYNC_ENABLE
1326	if (async_pending)	1544	if (async_pending)
1327	{	1545	{
1328	async_pending = 0;	1546	async_pending = 0;
…		…
1337	#endif	1555	#endif
1338	}	1556	}
1339		1557
1340	/*****************************************************************************/	1558	/*****************************************************************************/
1341		1559
		1560	void
		1561	ev_feed_signal (int signum)
		1562	{
		1563	#if EV_MULTIPLICITY
		1564	EV_P = signals [signum - 1].loop;
		1565
		1566	if (!EV_A)
		1567	return;
		1568	#endif
		1569
		1570	if (!ev_active (&pipe_w))
		1571	return;
		1572
		1573	signals [signum - 1].pending = 1;
		1574	evpipe_write (EV_A_ &sig_pending);
		1575	}
		1576
1342	static void	1577	static void
1343	ev_sighandler (int signum)	1578	ev_sighandler (int signum)
1344	{	1579	{
1345	#if EV_MULTIPLICITY
1346	EV_P = signals [signum - 1].loop;
1347	#endif
1348
1349	#ifdef _WIN32	1580	#ifdef _WIN32
1350	signal (signum, ev_sighandler);	1581	signal (signum, ev_sighandler);
1351	#endif	1582	#endif
1352		1583
1353	signals [signum - 1].pending = 1;	1584	ev_feed_signal (signum);
1354	evpipe_write (EV_A_ &sig_pending);
1355	}	1585	}
1356		1586
1357	void noinline	1587	void noinline
1358	ev_feed_signal_event (EV_P_ int signum)	1588	ev_feed_signal_event (EV_P_ int signum)
1359	{	1589	{
…		…
1459		1689
1460	#endif	1690	#endif
1461		1691
1462	/*****************************************************************************/	1692	/*****************************************************************************/
1463		1693
		1694	#if EV_USE_IOCP
		1695	# include "ev_iocp.c"
		1696	#endif
1464	#if EV_USE_PORT	1697	#if EV_USE_PORT
1465	# include "ev_port.c"	1698	# include "ev_port.c"
1466	#endif	1699	#endif
1467	#if EV_USE_KQUEUE	1700	#if EV_USE_KQUEUE
1468	# include "ev_kqueue.c"	1701	# include "ev_kqueue.c"
…		…
1475	#endif	1708	#endif
1476	#if EV_USE_SELECT	1709	#if EV_USE_SELECT
1477	# include "ev_select.c"	1710	# include "ev_select.c"
1478	#endif	1711	#endif
1479		1712
1480	int	1713	int ecb_cold
1481	ev_version_major (void)	1714	ev_version_major (void)
1482	{	1715	{
1483	return EV_VERSION_MAJOR;	1716	return EV_VERSION_MAJOR;
1484	}	1717	}
1485		1718
1486	int	1719	int ecb_cold
1487	ev_version_minor (void)	1720	ev_version_minor (void)
1488	{	1721	{
1489	return EV_VERSION_MINOR;	1722	return EV_VERSION_MINOR;
1490	}	1723	}
1491		1724
1492	/* return true if we are running with elevated privileges and should ignore env variables */	1725	/* return true if we are running with elevated privileges and should ignore env variables */
1493	int inline_size	1726	int inline_size ecb_cold
1494	enable_secure (void)	1727	enable_secure (void)
1495	{	1728	{
1496	#ifdef _WIN32	1729	#ifdef _WIN32
1497	return 0;	1730	return 0;
1498	#else	1731	#else
1499	return getuid () != geteuid ()	1732	return getuid () != geteuid ()
1500	|| getgid () != getegid ();	1733	|| getgid () != getegid ();
1501	#endif	1734	#endif
1502	}	1735	}
1503		1736
1504	unsigned int	1737	unsigned int ecb_cold
1505	ev_supported_backends (void)	1738	ev_supported_backends (void)
1506	{	1739	{
1507	unsigned int flags = 0;	1740	unsigned int flags = 0;
1508		1741
1509	if (EV_USE_PORT ) flags |= EVBACKEND_PORT;	1742	if (EV_USE_PORT ) flags |= EVBACKEND_PORT;
…		…
1513	if (EV_USE_SELECT) flags |= EVBACKEND_SELECT;	1746	if (EV_USE_SELECT) flags |= EVBACKEND_SELECT;
1514		1747
1515	return flags;	1748	return flags;
1516	}	1749	}
1517		1750
1518	unsigned int	1751	unsigned int ecb_cold
1519	ev_recommended_backends (void)	1752	ev_recommended_backends (void)
1520	{	1753	{
1521	unsigned int flags = ev_supported_backends ();	1754	unsigned int flags = ev_supported_backends ();
1522		1755
1523	#ifndef __NetBSD__	1756	#ifndef __NetBSD__
…		…
1535	#endif	1768	#endif
1536		1769
1537	return flags;	1770	return flags;
1538	}	1771	}
1539		1772
1540	unsigned int	1773	unsigned int ecb_cold
1541	ev_embeddable_backends (void)	1774	ev_embeddable_backends (void)
1542	{	1775	{
1543	int flags = EVBACKEND_EPOLL | EVBACKEND_KQUEUE | EVBACKEND_PORT;	1776	int flags = EVBACKEND_EPOLL | EVBACKEND_KQUEUE | EVBACKEND_PORT;
1544		1777
1545	/* epoll embeddability broken on all linux versions up to at least 2.6.23 */	1778	/* epoll embeddability broken on all linux versions up to at least 2.6.23 */
1546	/* please fix it and tell me how to detect the fix */	1779	if (ev_linux_version () < 0x020620) /* disable it on linux < 2.6.32 */
1547	flags &= ~EVBACKEND_EPOLL;	1780	flags &= ~EVBACKEND_EPOLL;
1548		1781
1549	return flags;	1782	return flags;
1550	}	1783	}
1551		1784
1552	unsigned int	1785	unsigned int
…		…
1590	ev_userdata (EV_P)	1823	ev_userdata (EV_P)
1591	{	1824	{
1592	return userdata;	1825	return userdata;
1593	}	1826	}
1594		1827
		1828	void
1595	void ev_set_invoke_pending_cb (EV_P_ void (*invoke_pending_cb)(EV_P))	1829	ev_set_invoke_pending_cb (EV_P_ void (*invoke_pending_cb)(EV_P))
1596	{	1830	{
1597	invoke_cb = invoke_pending_cb;	1831	invoke_cb = invoke_pending_cb;
1598	}	1832	}
1599		1833
		1834	void
1600	void ev_set_loop_release_cb (EV_P_ void (*release)(EV_P), void (*acquire)(EV_P))	1835	ev_set_loop_release_cb (EV_P_ void (*release)(EV_P), void (*acquire)(EV_P))
1601	{	1836	{
1602	release_cb = release;	1837	release_cb = release;
1603	acquire_cb = acquire;	1838	acquire_cb = acquire;
1604	}	1839	}
1605	#endif	1840	#endif
1606		1841
1607	/* initialise a loop structure, must be zero-initialised */	1842	/* initialise a loop structure, must be zero-initialised */
1608	static void noinline	1843	static void noinline ecb_cold
1609	loop_init (EV_P_ unsigned int flags)	1844	loop_init (EV_P_ unsigned int flags)
1610	{	1845	{
1611	if (!backend)	1846	if (!backend)
1612	{	1847	{
		1848	origflags = flags;
		1849
1613	#if EV_USE_REALTIME	1850	#if EV_USE_REALTIME
1614	if (!have_realtime)	1851	if (!have_realtime)
1615	{	1852	{
1616	struct timespec ts;	1853	struct timespec ts;
1617		1854
…		…
1639	if (!(flags & EVFLAG_NOENV)	1876	if (!(flags & EVFLAG_NOENV)
1640	&& !enable_secure ()	1877	&& !enable_secure ()
1641	&& getenv ("LIBEV_FLAGS"))	1878	&& getenv ("LIBEV_FLAGS"))
1642	flags = atoi (getenv ("LIBEV_FLAGS"));	1879	flags = atoi (getenv ("LIBEV_FLAGS"));
1643		1880
1644	ev_rt_now = ev_time ();	1881	ev_rt_now = ev_time ();
1645	mn_now = get_clock ();	1882	mn_now = get_clock ();
1646	now_floor = mn_now;	1883	now_floor = mn_now;
1647	rtmn_diff = ev_rt_now - mn_now;	1884	rtmn_diff = ev_rt_now - mn_now;
1648	#if EV_FEATURE_API	1885	#if EV_FEATURE_API
1649	invoke_cb = ev_invoke_pending;	1886	invoke_cb = ev_invoke_pending;
1650	#endif	1887	#endif
1651		1888
1652	io_blocktime = 0.;	1889	io_blocktime = 0.;
1653	timeout_blocktime = 0.;	1890	timeout_blocktime = 0.;
1654	backend = 0;	1891	backend = 0;
1655	backend_fd = -1;	1892	backend_fd = -1;
1656	sig_pending = 0;	1893	sig_pending = 0;
1657	#if EV_ASYNC_ENABLE	1894	#if EV_ASYNC_ENABLE
1658	async_pending = 0;	1895	async_pending = 0;
1659	#endif	1896	#endif
		1897	pipe_write_skipped = 0;
		1898	pipe_write_wanted = 0;
1660	#if EV_USE_INOTIFY	1899	#if EV_USE_INOTIFY
1661	fs_fd = flags & EVFLAG_NOINOTIFY ? -1 : -2;	1900	fs_fd = flags & EVFLAG_NOINOTIFY ? -1 : -2;
1662	#endif	1901	#endif
1663	#if EV_USE_SIGNALFD	1902	#if EV_USE_SIGNALFD
1664	sigfd = flags & EVFLAG_SIGNALFD ? -2 : -1;	1903	sigfd = flags & EVFLAG_SIGNALFD ? -2 : -1;
1665	#endif	1904	#endif
1666		1905
1667	if (!(flags & 0x0000ffffU))	1906	if (!(flags & EVBACKEND_MASK))
1668	flags |= ev_recommended_backends ();	1907	flags |= ev_recommended_backends ();
1669		1908
		1909	#if EV_USE_IOCP
		1910	if (!backend && (flags & EVBACKEND_IOCP )) backend = iocp_init (EV_A_ flags);
		1911	#endif
1670	#if EV_USE_PORT	1912	#if EV_USE_PORT
1671	if (!backend && (flags & EVBACKEND_PORT )) backend = port_init (EV_A_ flags);	1913	if (!backend && (flags & EVBACKEND_PORT )) backend = port_init (EV_A_ flags);
1672	#endif	1914	#endif
1673	#if EV_USE_KQUEUE	1915	#if EV_USE_KQUEUE
1674	if (!backend && (flags & EVBACKEND_KQUEUE)) backend = kqueue_init (EV_A_ flags);	1916	if (!backend && (flags & EVBACKEND_KQUEUE)) backend = kqueue_init (EV_A_ flags);
…		…
1691	#endif	1933	#endif
1692	}	1934	}
1693	}	1935	}
1694		1936
1695	/* free up a loop structure */	1937	/* free up a loop structure */
1696	static void noinline	1938	void ecb_cold
1697	loop_destroy (EV_P)	1939	ev_loop_destroy (EV_P)
1698	{	1940	{
1699	int i;	1941	int i;
		1942
		1943	#if EV_MULTIPLICITY
		1944	/* mimic free (0) */
		1945	if (!EV_A)
		1946	return;
		1947	#endif
		1948
		1949	#if EV_CLEANUP_ENABLE
		1950	/* queue cleanup watchers (and execute them) */
		1951	if (expect_false (cleanupcnt))
		1952	{
		1953	queue_events (EV_A_ (W *)cleanups, cleanupcnt, EV_CLEANUP);
		1954	EV_INVOKE_PENDING;
		1955	}
		1956	#endif
		1957
		1958	#if EV_CHILD_ENABLE
		1959	if (ev_is_active (&childev))
		1960	{
		1961	ev_ref (EV_A); /* child watcher */
		1962	ev_signal_stop (EV_A_ &childev);
		1963	}
		1964	#endif
1700		1965
1701	if (ev_is_active (&pipe_w))	1966	if (ev_is_active (&pipe_w))
1702	{	1967	{
1703	/*ev_ref (EV_A);*/	1968	/*ev_ref (EV_A);*/
1704	/*ev_io_stop (EV_A_ &pipe_w);*/	1969	/*ev_io_stop (EV_A_ &pipe_w);*/
…		…
1726	#endif	1991	#endif
1727		1992
1728	if (backend_fd >= 0)	1993	if (backend_fd >= 0)
1729	close (backend_fd);	1994	close (backend_fd);
1730		1995
		1996	#if EV_USE_IOCP
		1997	if (backend == EVBACKEND_IOCP ) iocp_destroy (EV_A);
		1998	#endif
1731	#if EV_USE_PORT	1999	#if EV_USE_PORT
1732	if (backend == EVBACKEND_PORT ) port_destroy (EV_A);	2000	if (backend == EVBACKEND_PORT ) port_destroy (EV_A);
1733	#endif	2001	#endif
1734	#if EV_USE_KQUEUE	2002	#if EV_USE_KQUEUE
1735	if (backend == EVBACKEND_KQUEUE) kqueue_destroy (EV_A);	2003	if (backend == EVBACKEND_KQUEUE) kqueue_destroy (EV_A);
…		…
1762	array_free (periodic, EMPTY);	2030	array_free (periodic, EMPTY);
1763	#endif	2031	#endif
1764	#if EV_FORK_ENABLE	2032	#if EV_FORK_ENABLE
1765	array_free (fork, EMPTY);	2033	array_free (fork, EMPTY);
1766	#endif	2034	#endif
		2035	#if EV_CLEANUP_ENABLE
		2036	array_free (cleanup, EMPTY);
		2037	#endif
1767	array_free (prepare, EMPTY);	2038	array_free (prepare, EMPTY);
1768	array_free (check, EMPTY);	2039	array_free (check, EMPTY);
1769	#if EV_ASYNC_ENABLE	2040	#if EV_ASYNC_ENABLE
1770	array_free (async, EMPTY);	2041	array_free (async, EMPTY);
1771	#endif	2042	#endif
1772		2043
1773	backend = 0;	2044	backend = 0;
		2045
		2046	#if EV_MULTIPLICITY
		2047	if (ev_is_default_loop (EV_A))
		2048	#endif
		2049	ev_default_loop_ptr = 0;
		2050	#if EV_MULTIPLICITY
		2051	else
		2052	ev_free (EV_A);
		2053	#endif
1774	}	2054	}
1775		2055
1776	#if EV_USE_INOTIFY	2056	#if EV_USE_INOTIFY
1777	inline_size void infy_fork (EV_P);	2057	inline_size void infy_fork (EV_P);
1778	#endif	2058	#endif
…		…
1793	infy_fork (EV_A);	2073	infy_fork (EV_A);
1794	#endif	2074	#endif
1795		2075
1796	if (ev_is_active (&pipe_w))	2076	if (ev_is_active (&pipe_w))
1797	{	2077	{
1798	/* this "locks" the handlers against writing to the pipe */	2078	/* pipe_write_wanted must be false now, so modifying fd vars should be safe */
1799	/* while we modify the fd vars */
1800	sig_pending = 1;
1801	#if EV_ASYNC_ENABLE
1802	async_pending = 1;
1803	#endif
1804		2079
1805	ev_ref (EV_A);	2080	ev_ref (EV_A);
1806	ev_io_stop (EV_A_ &pipe_w);	2081	ev_io_stop (EV_A_ &pipe_w);
1807		2082
1808	#if EV_USE_EVENTFD	2083	#if EV_USE_EVENTFD
…		…
1826	postfork = 0;	2101	postfork = 0;
1827	}	2102	}
1828		2103
1829	#if EV_MULTIPLICITY	2104	#if EV_MULTIPLICITY
1830		2105
1831	struct ev_loop *	2106	struct ev_loop * ecb_cold
1832	ev_loop_new (unsigned int flags)	2107	ev_loop_new (unsigned int flags)
1833	{	2108	{
1834	EV_P = (struct ev_loop *)ev_malloc (sizeof (struct ev_loop));	2109	EV_P = (struct ev_loop *)ev_malloc (sizeof (struct ev_loop));
1835		2110
1836	memset (EV_A, 0, sizeof (struct ev_loop));	2111	memset (EV_A, 0, sizeof (struct ev_loop));
1837	loop_init (EV_A_ flags);	2112	loop_init (EV_A_ flags);
1838		2113
1839	if (ev_backend (EV_A))	2114	if (ev_backend (EV_A))
1840	return EV_A;	2115	return EV_A;
1841		2116
		2117	ev_free (EV_A);
1842	return 0;	2118	return 0;
1843	}	2119	}
1844		2120
1845	void
1846	ev_loop_destroy (EV_P)
1847	{
1848	loop_destroy (EV_A);
1849	ev_free (loop);
1850	}
1851
1852	void
1853	ev_loop_fork (EV_P)
1854	{
1855	postfork = 1; /* must be in line with ev_default_fork */
1856	}
1857	#endif /* multiplicity */	2121	#endif /* multiplicity */
1858		2122
1859	#if EV_VERIFY	2123	#if EV_VERIFY
1860	static void noinline	2124	static void noinline ecb_cold
1861	verify_watcher (EV_P_ W w)	2125	verify_watcher (EV_P_ W w)
1862	{	2126	{
1863	assert (("libev: watcher has invalid priority", ABSPRI (w) >= 0 && ABSPRI (w) < NUMPRI));	2127	assert (("libev: watcher has invalid priority", ABSPRI (w) >= 0 && ABSPRI (w) < NUMPRI));
1864		2128
1865	if (w->pending)	2129	if (w->pending)
1866	assert (("libev: pending watcher not on pending queue", pendings [ABSPRI (w)][w->pending - 1].w == w));	2130	assert (("libev: pending watcher not on pending queue", pendings [ABSPRI (w)][w->pending - 1].w == w));
1867	}	2131	}
1868		2132
1869	static void noinline	2133	static void noinline ecb_cold
1870	verify_heap (EV_P_ ANHE *heap, int N)	2134	verify_heap (EV_P_ ANHE *heap, int N)
1871	{	2135	{
1872	int i;	2136	int i;
1873		2137
1874	for (i = HEAP0; i < N + HEAP0; ++i)	2138	for (i = HEAP0; i < N + HEAP0; ++i)
…		…
1879		2143
1880	verify_watcher (EV_A_ (W)ANHE_w (heap [i]));	2144	verify_watcher (EV_A_ (W)ANHE_w (heap [i]));
1881	}	2145	}
1882	}	2146	}
1883		2147
1884	static void noinline	2148	static void noinline ecb_cold
1885	array_verify (EV_P_ W *ws, int cnt)	2149	array_verify (EV_P_ W *ws, int cnt)
1886	{	2150	{
1887	while (cnt--)	2151	while (cnt--)
1888	{	2152	{
1889	assert (("libev: active index mismatch", ev_active (ws [cnt]) == cnt + 1));	2153	assert (("libev: active index mismatch", ev_active (ws [cnt]) == cnt + 1));
…		…
1891	}	2155	}
1892	}	2156	}
1893	#endif	2157	#endif
1894		2158
1895	#if EV_FEATURE_API	2159	#if EV_FEATURE_API
1896	void	2160	void ecb_cold
1897	ev_verify (EV_P)	2161	ev_verify (EV_P)
1898	{	2162	{
1899	#if EV_VERIFY	2163	#if EV_VERIFY
1900	int i;	2164	int i;
1901	WL w;	2165	WL w;
…		…
1936	#if EV_FORK_ENABLE	2200	#if EV_FORK_ENABLE
1937	assert (forkmax >= forkcnt);	2201	assert (forkmax >= forkcnt);
1938	array_verify (EV_A_ (W *)forks, forkcnt);	2202	array_verify (EV_A_ (W *)forks, forkcnt);
1939	#endif	2203	#endif
1940		2204
		2205	#if EV_CLEANUP_ENABLE
		2206	assert (cleanupmax >= cleanupcnt);
		2207	array_verify (EV_A_ (W *)cleanups, cleanupcnt);
		2208	#endif
		2209
1941	#if EV_ASYNC_ENABLE	2210	#if EV_ASYNC_ENABLE
1942	assert (asyncmax >= asynccnt);	2211	assert (asyncmax >= asynccnt);
1943	array_verify (EV_A_ (W *)asyncs, asynccnt);	2212	array_verify (EV_A_ (W *)asyncs, asynccnt);
1944	#endif	2213	#endif
1945		2214
…		…
1962	#endif	2231	#endif
1963	}	2232	}
1964	#endif	2233	#endif
1965		2234
1966	#if EV_MULTIPLICITY	2235	#if EV_MULTIPLICITY
1967	struct ev_loop *	2236	struct ev_loop * ecb_cold
1968	ev_default_loop_init (unsigned int flags)
1969	#else	2237	#else
1970	int	2238	int
		2239	#endif
1971	ev_default_loop (unsigned int flags)	2240	ev_default_loop (unsigned int flags)
1972	#endif
1973	{	2241	{
1974	if (!ev_default_loop_ptr)	2242	if (!ev_default_loop_ptr)
1975	{	2243	{
1976	#if EV_MULTIPLICITY	2244	#if EV_MULTIPLICITY
1977	EV_P = ev_default_loop_ptr = &default_loop_struct;	2245	EV_P = ev_default_loop_ptr = &default_loop_struct;
…		…
1996		2264
1997	return ev_default_loop_ptr;	2265	return ev_default_loop_ptr;
1998	}	2266	}
1999		2267
2000	void	2268	void
2001	ev_default_destroy (void)	2269	ev_loop_fork (EV_P)
2002	{	2270	{
2003	#if EV_MULTIPLICITY
2004	EV_P = ev_default_loop_ptr;
2005	#endif
2006
2007	ev_default_loop_ptr = 0;
2008
2009	#if EV_CHILD_ENABLE
2010	ev_ref (EV_A); /* child watcher */
2011	ev_signal_stop (EV_A_ &childev);
2012	#endif
2013
2014	loop_destroy (EV_A);
2015	}
2016
2017	void
2018	ev_default_fork (void)
2019	{
2020	#if EV_MULTIPLICITY
2021	EV_P = ev_default_loop_ptr;
2022	#endif
2023
2024	postfork = 1; /* must be in line with ev_loop_fork */	2271	postfork = 1; /* must be in line with ev_default_fork */
2025	}	2272	}
2026		2273
2027	/*****************************************************************************/	2274	/*****************************************************************************/
2028		2275
2029	void	2276	void
…		…
2051		2298
2052	for (pri = NUMPRI; pri--; )	2299	for (pri = NUMPRI; pri--; )
2053	while (pendingcnt [pri])	2300	while (pendingcnt [pri])
2054	{	2301	{
2055	ANPENDING *p = pendings [pri] + --pendingcnt [pri];	2302	ANPENDING *p = pendings [pri] + --pendingcnt [pri];
2056
2057	/*assert (("libev: non-pending watcher on pending list", p->w->pending));*/
2058	/* ^ this is no longer true, as pending_w could be here */
2059		2303
2060	p->w->pending = 0;	2304	p->w->pending = 0;
2061	EV_CB_INVOKE (p->w, p->events);	2305	EV_CB_INVOKE (p->w, p->events);
2062	EV_FREQUENT_CHECK;	2306	EV_FREQUENT_CHECK;
2063	}	2307	}
…		…
2125	feed_reverse_done (EV_A_ EV_TIMER);	2369	feed_reverse_done (EV_A_ EV_TIMER);
2126	}	2370	}
2127	}	2371	}
2128		2372
2129	#if EV_PERIODIC_ENABLE	2373	#if EV_PERIODIC_ENABLE
		2374
		2375	static void noinline
		2376	periodic_recalc (EV_P_ ev_periodic *w)
		2377	{
		2378	ev_tstamp interval = w->interval > MIN_INTERVAL ? w->interval : MIN_INTERVAL;
		2379	ev_tstamp at = w->offset + interval * ev_floor ((ev_rt_now - w->offset) / interval);
		2380
		2381	/* the above almost always errs on the low side */
		2382	while (at <= ev_rt_now)
		2383	{
		2384	ev_tstamp nat = at + w->interval;
		2385
		2386	/* when resolution fails us, we use ev_rt_now */
		2387	if (expect_false (nat == at))
		2388	{
		2389	at = ev_rt_now;
		2390	break;
		2391	}
		2392
		2393	at = nat;
		2394	}
		2395
		2396	ev_at (w) = at;
		2397	}
		2398
2130	/* make periodics pending */	2399	/* make periodics pending */
2131	inline_size void	2400	inline_size void
2132	periodics_reify (EV_P)	2401	periodics_reify (EV_P)
2133	{	2402	{
2134	EV_FREQUENT_CHECK;	2403	EV_FREQUENT_CHECK;
…		…
2153	ANHE_at_cache (periodics [HEAP0]);	2422	ANHE_at_cache (periodics [HEAP0]);
2154	downheap (periodics, periodiccnt, HEAP0);	2423	downheap (periodics, periodiccnt, HEAP0);
2155	}	2424	}
2156	else if (w->interval)	2425	else if (w->interval)
2157	{	2426	{
2158	ev_at (w) = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval;	2427	periodic_recalc (EV_A_ w);
2159	/* if next trigger time is not sufficiently in the future, put it there */
2160	/* this might happen because of floating point inexactness */
2161	if (ev_at (w) - ev_rt_now < TIME_EPSILON)
2162	{
2163	ev_at (w) += w->interval;
2164
2165	/* if interval is unreasonably low we might still have a time in the past */
2166	/* so correct this. this will make the periodic very inexact, but the user */
2167	/* has effectively asked to get triggered more often than possible */
2168	if (ev_at (w) < ev_rt_now)
2169	ev_at (w) = ev_rt_now;
2170	}
2171
2172	ANHE_at_cache (periodics [HEAP0]);	2428	ANHE_at_cache (periodics [HEAP0]);
2173	downheap (periodics, periodiccnt, HEAP0);	2429	downheap (periodics, periodiccnt, HEAP0);
2174	}	2430	}
2175	else	2431	else
2176	ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */	2432	ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */
…		…
2184	}	2440	}
2185	}	2441	}
2186		2442
2187	/* simply recalculate all periodics */	2443	/* simply recalculate all periodics */
2188	/* TODO: maybe ensure that at least one event happens when jumping forward? */	2444	/* TODO: maybe ensure that at least one event happens when jumping forward? */
2189	static void noinline	2445	static void noinline ecb_cold
2190	periodics_reschedule (EV_P)	2446	periodics_reschedule (EV_P)
2191	{	2447	{
2192	int i;	2448	int i;
2193		2449
2194	/* adjust periodics after time jump */	2450	/* adjust periodics after time jump */
…		…
2197	ev_periodic *w = (ev_periodic *)ANHE_w (periodics [i]);	2453	ev_periodic *w = (ev_periodic *)ANHE_w (periodics [i]);
2198		2454
2199	if (w->reschedule_cb)	2455	if (w->reschedule_cb)
2200	ev_at (w) = w->reschedule_cb (w, ev_rt_now);	2456	ev_at (w) = w->reschedule_cb (w, ev_rt_now);
2201	else if (w->interval)	2457	else if (w->interval)
2202	ev_at (w) = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval;	2458	periodic_recalc (EV_A_ w);
2203		2459
2204	ANHE_at_cache (periodics [i]);	2460	ANHE_at_cache (periodics [i]);
2205	}	2461	}
2206		2462
2207	reheap (periodics, periodiccnt);	2463	reheap (periodics, periodiccnt);
2208	}	2464	}
2209	#endif	2465	#endif
2210		2466
2211	/* adjust all timers by a given offset */	2467	/* adjust all timers by a given offset */
2212	static void noinline	2468	static void noinline ecb_cold
2213	timers_reschedule (EV_P_ ev_tstamp adjust)	2469	timers_reschedule (EV_P_ ev_tstamp adjust)
2214	{	2470	{
2215	int i;	2471	int i;
2216		2472
2217	for (i = 0; i < timercnt; ++i)	2473	for (i = 0; i < timercnt; ++i)
…		…
2254	* doesn't hurt either as we only do this on time-jumps or	2510	* doesn't hurt either as we only do this on time-jumps or
2255	* in the unlikely event of having been preempted here.	2511	* in the unlikely event of having been preempted here.
2256	*/	2512	*/
2257	for (i = 4; --i; )	2513	for (i = 4; --i; )
2258	{	2514	{
		2515	ev_tstamp diff;
2259	rtmn_diff = ev_rt_now - mn_now;	2516	rtmn_diff = ev_rt_now - mn_now;
2260		2517
		2518	diff = odiff - rtmn_diff;
		2519
2261	if (expect_true (fabs (odiff - rtmn_diff) < MIN_TIMEJUMP))	2520	if (expect_true ((diff < 0. ? -diff : diff) < MIN_TIMEJUMP))
2262	return; /* all is well */	2521	return; /* all is well */
2263		2522
2264	ev_rt_now = ev_time ();	2523	ev_rt_now = ev_time ();
2265	mn_now = get_clock ();	2524	mn_now = get_clock ();
2266	now_floor = mn_now;	2525	now_floor = mn_now;
…		…
2289	mn_now = ev_rt_now;	2548	mn_now = ev_rt_now;
2290	}	2549	}
2291	}	2550	}
2292		2551
2293	void	2552	void
2294	ev_loop (EV_P_ int flags)	2553	ev_run (EV_P_ int flags)
2295	{	2554	{
2296	#if EV_FEATURE_API	2555	#if EV_FEATURE_API
2297	++loop_depth;	2556	++loop_depth;
2298	#endif	2557	#endif
2299		2558
2300	assert (("libev: ev_loop recursion during release detected", loop_done != EVUNLOOP_RECURSE));	2559	assert (("libev: ev_loop recursion during release detected", loop_done != EVBREAK_RECURSE));
2301		2560
2302	loop_done = EVUNLOOP_CANCEL;	2561	loop_done = EVBREAK_CANCEL;
2303		2562
2304	EV_INVOKE_PENDING; /* in case we recurse, ensure ordering stays nice and clean */	2563	EV_INVOKE_PENDING; /* in case we recurse, ensure ordering stays nice and clean */
2305		2564
2306	do	2565	do
2307	{	2566	{
…		…
2350	/* calculate blocking time */	2609	/* calculate blocking time */
2351	{	2610	{
2352	ev_tstamp waittime = 0.;	2611	ev_tstamp waittime = 0.;
2353	ev_tstamp sleeptime = 0.;	2612	ev_tstamp sleeptime = 0.;
2354		2613
		2614	/* remember old timestamp for io_blocktime calculation */
		2615	ev_tstamp prev_mn_now = mn_now;
		2616
		2617	/* update time to cancel out callback processing overhead */
		2618	time_update (EV_A_ 1e100);
		2619
		2620	/* from now on, we want a pipe-wake-up */
		2621	pipe_write_wanted = 1;
		2622
		2623	ECB_MEMORY_FENCE; /* make sure pipe_write_wanted is visible before we check for potential skips */
		2624
2355	if (expect_true (!(flags & EVLOOP_NONBLOCK || idleall || !activecnt)))	2625	if (expect_true (!(flags & EVRUN_NOWAIT || idleall || !activecnt || pipe_write_skipped)))
2356	{	2626	{
2357	/* remember old timestamp for io_blocktime calculation */
2358	ev_tstamp prev_mn_now = mn_now;
2359
2360	/* update time to cancel out callback processing overhead */
2361	time_update (EV_A_ 1e100);
2362
2363	waittime = MAX_BLOCKTIME;	2627	waittime = MAX_BLOCKTIME;
2364		2628
2365	if (timercnt)	2629	if (timercnt)
2366	{	2630	{
2367	ev_tstamp to = ANHE_at (timers [HEAP0]) - mn_now + backend_fudge;	2631	ev_tstamp to = ANHE_at (timers [HEAP0]) - mn_now;
2368	if (waittime > to) waittime = to;	2632	if (waittime > to) waittime = to;
2369	}	2633	}
2370		2634
2371	#if EV_PERIODIC_ENABLE	2635	#if EV_PERIODIC_ENABLE
2372	if (periodiccnt)	2636	if (periodiccnt)
2373	{	2637	{
2374	ev_tstamp to = ANHE_at (periodics [HEAP0]) - ev_rt_now + backend_fudge;	2638	ev_tstamp to = ANHE_at (periodics [HEAP0]) - ev_rt_now;
2375	if (waittime > to) waittime = to;	2639	if (waittime > to) waittime = to;
2376	}	2640	}
2377	#endif	2641	#endif
2378		2642
2379	/* don't let timeouts decrease the waittime below timeout_blocktime */	2643	/* don't let timeouts decrease the waittime below timeout_blocktime */
2380	if (expect_false (waittime < timeout_blocktime))	2644	if (expect_false (waittime < timeout_blocktime))
2381	waittime = timeout_blocktime;	2645	waittime = timeout_blocktime;
		2646
		2647	/* at this point, we NEED to wait, so we have to ensure */
		2648	/* to pass a minimum nonzero value to the backend */
		2649	if (expect_false (waittime < backend_mintime))
		2650	waittime = backend_mintime;
2382		2651
2383	/* extra check because io_blocktime is commonly 0 */	2652	/* extra check because io_blocktime is commonly 0 */
2384	if (expect_false (io_blocktime))	2653	if (expect_false (io_blocktime))
2385	{	2654	{
2386	sleeptime = io_blocktime - (mn_now - prev_mn_now);	2655	sleeptime = io_blocktime - (mn_now - prev_mn_now);
2387		2656
2388	if (sleeptime > waittime - backend_fudge)	2657	if (sleeptime > waittime - backend_mintime)
2389	sleeptime = waittime - backend_fudge;	2658	sleeptime = waittime - backend_mintime;
2390		2659
2391	if (expect_true (sleeptime > 0.))	2660	if (expect_true (sleeptime > 0.))
2392	{	2661	{
2393	ev_sleep (sleeptime);	2662	ev_sleep (sleeptime);
2394	waittime -= sleeptime;	2663	waittime -= sleeptime;
…		…
2397	}	2666	}
2398		2667
2399	#if EV_FEATURE_API	2668	#if EV_FEATURE_API
2400	++loop_count;	2669	++loop_count;
2401	#endif	2670	#endif
2402	assert ((loop_done = EVUNLOOP_RECURSE, 1)); /* assert for side effect */	2671	assert ((loop_done = EVBREAK_RECURSE, 1)); /* assert for side effect */
2403	backend_poll (EV_A_ waittime);	2672	backend_poll (EV_A_ waittime);
2404	assert ((loop_done = EVUNLOOP_CANCEL, 1)); /* assert for side effect */	2673	assert ((loop_done = EVBREAK_CANCEL, 1)); /* assert for side effect */
		2674
		2675	pipe_write_wanted = 0; /* just an optimsiation, no fence needed */
		2676
		2677	if (pipe_write_skipped)
		2678	{
		2679	assert (("libev: pipe_w not active, but pipe not written", ev_is_active (&pipe_w)));
		2680	ev_feed_event (EV_A_ &pipe_w, EV_CUSTOM);
		2681	}
		2682
2405		2683
2406	/* update ev_rt_now, do magic */	2684	/* update ev_rt_now, do magic */
2407	time_update (EV_A_ waittime + sleeptime);	2685	time_update (EV_A_ waittime + sleeptime);
2408	}	2686	}
2409		2687
…		…
2427	EV_INVOKE_PENDING;	2705	EV_INVOKE_PENDING;
2428	}	2706	}
2429	while (expect_true (	2707	while (expect_true (
2430	activecnt	2708	activecnt
2431	&& !loop_done	2709	&& !loop_done
2432	&& !(flags & (EVLOOP_ONESHOT | EVLOOP_NONBLOCK))	2710	&& !(flags & (EVRUN_ONCE | EVRUN_NOWAIT))
2433	));	2711	));
2434		2712
2435	if (loop_done == EVUNLOOP_ONE)	2713	if (loop_done == EVBREAK_ONE)
2436	loop_done = EVUNLOOP_CANCEL;	2714	loop_done = EVBREAK_CANCEL;
2437		2715
2438	#if EV_FEATURE_API	2716	#if EV_FEATURE_API
2439	--loop_depth;	2717	--loop_depth;
2440	#endif	2718	#endif
2441	}	2719	}
2442		2720
2443	void	2721	void
2444	ev_unloop (EV_P_ int how)	2722	ev_break (EV_P_ int how)
2445	{	2723	{
2446	loop_done = how;	2724	loop_done = how;
2447	}	2725	}
2448		2726
2449	void	2727	void
…		…
2597	EV_FREQUENT_CHECK;	2875	EV_FREQUENT_CHECK;
2598		2876
2599	wlist_del (&anfds[w->fd].head, (WL)w);	2877	wlist_del (&anfds[w->fd].head, (WL)w);
2600	ev_stop (EV_A_ (W)w);	2878	ev_stop (EV_A_ (W)w);
2601		2879
2602	fd_change (EV_A_ w->fd, 1);	2880	fd_change (EV_A_ w->fd, EV_ANFD_REIFY);
2603		2881
2604	EV_FREQUENT_CHECK;	2882	EV_FREQUENT_CHECK;
2605	}	2883	}
2606		2884
2607	void noinline	2885	void noinline
…		…
2699	if (w->reschedule_cb)	2977	if (w->reschedule_cb)
2700	ev_at (w) = w->reschedule_cb (w, ev_rt_now);	2978	ev_at (w) = w->reschedule_cb (w, ev_rt_now);
2701	else if (w->interval)	2979	else if (w->interval)
2702	{	2980	{
2703	assert (("libev: ev_periodic_start called with negative interval value", w->interval >= 0.));	2981	assert (("libev: ev_periodic_start called with negative interval value", w->interval >= 0.));
2704	/* this formula differs from the one in periodic_reify because we do not always round up */	2982	periodic_recalc (EV_A_ w);
2705	ev_at (w) = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval;
2706	}	2983	}
2707	else	2984	else
2708	ev_at (w) = w->offset;	2985	ev_at (w) = w->offset;
2709		2986
2710	EV_FREQUENT_CHECK;	2987	EV_FREQUENT_CHECK;
…		…
2831	sa.sa_handler = ev_sighandler;	3108	sa.sa_handler = ev_sighandler;
2832	sigfillset (&sa.sa_mask);	3109	sigfillset (&sa.sa_mask);
2833	sa.sa_flags = SA_RESTART; /* if restarting works we save one iteration */	3110	sa.sa_flags = SA_RESTART; /* if restarting works we save one iteration */
2834	sigaction (w->signum, &sa, 0);	3111	sigaction (w->signum, &sa, 0);
2835		3112
		3113	if (origflags & EVFLAG_NOSIGMASK)
		3114	{
2836	sigemptyset (&sa.sa_mask);	3115	sigemptyset (&sa.sa_mask);
2837	sigaddset (&sa.sa_mask, w->signum);	3116	sigaddset (&sa.sa_mask, w->signum);
2838	sigprocmask (SIG_UNBLOCK, &sa.sa_mask, 0);	3117	sigprocmask (SIG_UNBLOCK, &sa.sa_mask, 0);
		3118	}
2839	#endif	3119	#endif
2840	}	3120	}
2841		3121
2842	EV_FREQUENT_CHECK;	3122	EV_FREQUENT_CHECK;
2843	}	3123	}
…		…
2984	if (!pend || pend == path)	3264	if (!pend || pend == path)
2985	break;	3265	break;
2986		3266
2987	*pend = 0;	3267	*pend = 0;
2988	w->wd = inotify_add_watch (fs_fd, path, mask);	3268	w->wd = inotify_add_watch (fs_fd, path, mask);
2989	}	3269	}
2990	while (w->wd < 0 && (errno == ENOENT || errno == EACCES));	3270	while (w->wd < 0 && (errno == ENOENT || errno == EACCES));
2991	}	3271	}
2992	}	3272	}
2993		3273
2994	if (w->wd >= 0)	3274	if (w->wd >= 0)
…		…
3061	infy_wd (EV_A_ ev->wd, ev->wd, ev);	3341	infy_wd (EV_A_ ev->wd, ev->wd, ev);
3062	ofs += sizeof (struct inotify_event) + ev->len;	3342	ofs += sizeof (struct inotify_event) + ev->len;
3063	}	3343	}
3064	}	3344	}
3065		3345
3066	inline_size unsigned int
3067	ev_linux_version (void)
3068	{
3069	struct utsname buf;
3070	unsigned int v;
3071	int i;
3072	char *p = buf.release;
3073
3074	if (uname (&buf))
3075	return 0;
3076
3077	for (i = 3+1; --i; )
3078	{
3079	unsigned int c = 0;
3080
3081	for (;;)
3082	{
3083	if (*p >= '0' && *p <= '9')
3084	c = c * 10 + *p++ - '0';
3085	else
3086	{
3087	p += *p == '.';
3088	break;
3089	}
3090	}
3091
3092	v = (v << 8) | c;
3093	}
3094
3095	return v;
3096	}
3097
3098	inline_size void	3346	inline_size void ecb_cold
3099	ev_check_2625 (EV_P)	3347	ev_check_2625 (EV_P)
3100	{	3348	{
3101	/* kernels < 2.6.25 are borked	3349	/* kernels < 2.6.25 are borked
3102	* http://www.ussg.indiana.edu/hypermail/linux/kernel/0711.3/1208.html	3350	* http://www.ussg.indiana.edu/hypermail/linux/kernel/0711.3/1208.html
3103	*/	3351	*/
…		…
3424		3672
3425	#if EV_EMBED_ENABLE	3673	#if EV_EMBED_ENABLE
3426	void noinline	3674	void noinline
3427	ev_embed_sweep (EV_P_ ev_embed *w)	3675	ev_embed_sweep (EV_P_ ev_embed *w)
3428	{	3676	{
3429	ev_loop (w->other, EVLOOP_NONBLOCK);	3677	ev_run (w->other, EVRUN_NOWAIT);
3430	}	3678	}
3431		3679
3432	static void	3680	static void
3433	embed_io_cb (EV_P_ ev_io *io, int revents)	3681	embed_io_cb (EV_P_ ev_io *io, int revents)
3434	{	3682	{
3435	ev_embed *w = (ev_embed *)(((char *)io) - offsetof (ev_embed, io));	3683	ev_embed *w = (ev_embed *)(((char *)io) - offsetof (ev_embed, io));
3436		3684
3437	if (ev_cb (w))	3685	if (ev_cb (w))
3438	ev_feed_event (EV_A_ (W)w, EV_EMBED);	3686	ev_feed_event (EV_A_ (W)w, EV_EMBED);
3439	else	3687	else
3440	ev_loop (w->other, EVLOOP_NONBLOCK);	3688	ev_run (w->other, EVRUN_NOWAIT);
3441	}	3689	}
3442		3690
3443	static void	3691	static void
3444	embed_prepare_cb (EV_P_ ev_prepare *prepare, int revents)	3692	embed_prepare_cb (EV_P_ ev_prepare *prepare, int revents)
3445	{	3693	{
…		…
3449	EV_P = w->other;	3697	EV_P = w->other;
3450		3698
3451	while (fdchangecnt)	3699	while (fdchangecnt)
3452	{	3700	{
3453	fd_reify (EV_A);	3701	fd_reify (EV_A);
3454	ev_loop (EV_A_ EVLOOP_NONBLOCK);	3702	ev_run (EV_A_ EVRUN_NOWAIT);
3455	}	3703	}
3456	}	3704	}
3457	}	3705	}
3458		3706
3459	static void	3707	static void
…		…
3465		3713
3466	{	3714	{
3467	EV_P = w->other;	3715	EV_P = w->other;
3468		3716
3469	ev_loop_fork (EV_A);	3717	ev_loop_fork (EV_A);
3470	ev_loop (EV_A_ EVLOOP_NONBLOCK);	3718	ev_run (EV_A_ EVRUN_NOWAIT);
3471	}	3719	}
3472		3720
3473	ev_embed_start (EV_A_ w);	3721	ev_embed_start (EV_A_ w);
3474	}	3722	}
3475		3723
…		…
3567		3815
3568	EV_FREQUENT_CHECK;	3816	EV_FREQUENT_CHECK;
3569	}	3817	}
3570	#endif	3818	#endif
3571		3819
		3820	#if EV_CLEANUP_ENABLE
		3821	void
		3822	ev_cleanup_start (EV_P_ ev_cleanup *w)
		3823	{
		3824	if (expect_false (ev_is_active (w)))
		3825	return;
		3826
		3827	EV_FREQUENT_CHECK;
		3828
		3829	ev_start (EV_A_ (W)w, ++cleanupcnt);
		3830	array_needsize (ev_cleanup *, cleanups, cleanupmax, cleanupcnt, EMPTY2);
		3831	cleanups [cleanupcnt - 1] = w;
		3832
		3833	/* cleanup watchers should never keep a refcount on the loop */
		3834	ev_unref (EV_A);
		3835	EV_FREQUENT_CHECK;
		3836	}
		3837
		3838	void
		3839	ev_cleanup_stop (EV_P_ ev_cleanup *w)
		3840	{
		3841	clear_pending (EV_A_ (W)w);
		3842	if (expect_false (!ev_is_active (w)))
		3843	return;
		3844
		3845	EV_FREQUENT_CHECK;
		3846	ev_ref (EV_A);
		3847
		3848	{
		3849	int active = ev_active (w);
		3850
		3851	cleanups [active - 1] = cleanups [--cleanupcnt];
		3852	ev_active (cleanups [active - 1]) = active;
		3853	}
		3854
		3855	ev_stop (EV_A_ (W)w);
		3856
		3857	EV_FREQUENT_CHECK;
		3858	}
		3859	#endif
		3860
3572	#if EV_ASYNC_ENABLE	3861	#if EV_ASYNC_ENABLE
3573	void	3862	void
3574	ev_async_start (EV_P_ ev_async *w)	3863	ev_async_start (EV_P_ ev_async *w)
3575	{	3864	{
3576	if (expect_false (ev_is_active (w)))	3865	if (expect_false (ev_is_active (w)))
3577	return;	3866	return;
		3867
		3868	w->sent = 0;
3578		3869
3579	evpipe_init (EV_A);	3870	evpipe_init (EV_A);
3580		3871
3581	EV_FREQUENT_CHECK;	3872	EV_FREQUENT_CHECK;
3582		3873
…		…
3685	}	3976	}
3686		3977
3687	/*****************************************************************************/	3978	/*****************************************************************************/
3688		3979
3689	#if EV_WALK_ENABLE	3980	#if EV_WALK_ENABLE
3690	void	3981	void ecb_cold
3691	ev_walk (EV_P_ int types, void (*cb)(EV_P_ int type, void *w))	3982	ev_walk (EV_P_ int types, void (*cb)(EV_P_ int type, void *w))
3692	{	3983	{
3693	int i, j;	3984	int i, j;
3694	ev_watcher_list *wl, *wn;	3985	ev_watcher_list *wl, *wn;
3695		3986
…		…
3739	cb (EV_A_ EV_PERIODIC, ANHE_w (periodics [i]));	4030	cb (EV_A_ EV_PERIODIC, ANHE_w (periodics [i]));
3740	#endif	4031	#endif
3741		4032
3742	#if EV_IDLE_ENABLE	4033	#if EV_IDLE_ENABLE
3743	if (types & EV_IDLE)	4034	if (types & EV_IDLE)
3744	for (j = NUMPRI; i--; )	4035	for (j = NUMPRI; j--; )
3745	for (i = idlecnt [j]; i--; )	4036	for (i = idlecnt [j]; i--; )
3746	cb (EV_A_ EV_IDLE, idles [j][i]);	4037	cb (EV_A_ EV_IDLE, idles [j][i]);
3747	#endif	4038	#endif
3748		4039
3749	#if EV_FORK_ENABLE	4040	#if EV_FORK_ENABLE
…		…
3802		4093
3803	#if EV_MULTIPLICITY	4094	#if EV_MULTIPLICITY
3804	#include "ev_wrap.h"	4095	#include "ev_wrap.h"
3805	#endif	4096	#endif
3806		4097
3807	#ifdef __cplusplus	4098	EV_CPP(})
3808	}
3809	#endif
3810		4099

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