[ViewVC] Diff of: cvs/libev/ev.c

Comparing libev/ev.c (file contents):
Revision 1.351 by root, Sat Oct 16 06:46:55 2010 UTC vs.
Revision 1.383 by root, Wed Jul 20 00:40:14 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; ts.tv_nsec = (long)((t - ts.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
		517	#define ECB_MEMORY_FENCE do { } while (0)
		518	#define ECB_MEMORY_FENCE_ACQUIRE ECB_MEMORY_FENCE
		519	#define ECB_MEMORY_FENCE_RELEASE ECB_MEMORY_FENCE
		520	#elif defined(_WIN32) && defined(MemoryBarrier)
		521	#define ECB_MEMORY_FENCE MemoryBarrier ()
		522	#define ECB_MEMORY_FENCE_ACQUIRE ECB_MEMORY_FENCE
		523	#define ECB_MEMORY_FENCE_RELEASE ECB_MEMORY_FENCE
		524	#endif
		525	#endif
		526
		527	#ifndef ECB_MEMORY_FENCE
		528	#include <pthread.h>
		529
		530	static pthread_mutex_t ecb_mf_lock = PTHREAD_MUTEX_INITIALIZER;
		531	#define ECB_MEMORY_FENCE do { pthread_mutex_lock (&ecb_mf_lock); pthread_mutex_unlock (&ecb_mf_lock); } while (0)
		532	#define ECB_MEMORY_FENCE_ACQUIRE ECB_MEMORY_FENCE
		533	#define ECB_MEMORY_FENCE_RELEASE ECB_MEMORY_FENCE
		534	#endif
		535
		536	#if ECB_GCC_VERSION(3,1)
		537	#define ecb_attribute(attrlist) __attribute__(attrlist)
		538	#define ecb_is_constant(expr) __builtin_constant_p (expr)
		539	#define ecb_expect(expr,value) __builtin_expect ((expr),(value))
		540	#define ecb_prefetch(addr,rw,locality) __builtin_prefetch (addr, rw, locality)
		541	#else
		542	#define ecb_attribute(attrlist)
		543	#define ecb_is_constant(expr) 0
		544	#define ecb_expect(expr,value) (expr)
		545	#define ecb_prefetch(addr,rw,locality)
		546	#endif
		547
		548	#define ecb_noinline ecb_attribute ((__noinline__))
		549	#define ecb_noreturn ecb_attribute ((__noreturn__))
		550	#define ecb_unused ecb_attribute ((__unused__))
		551	#define ecb_const ecb_attribute ((__const__))
		552	#define ecb_pure ecb_attribute ((__pure__))
		553
		554	#if ECB_GCC_VERSION(4,3)
		555	#define ecb_artificial ecb_attribute ((__artificial__))
		556	#define ecb_hot ecb_attribute ((__hot__))
		557	#define ecb_cold ecb_attribute ((__cold__))
		558	#else
		559	#define ecb_artificial
		560	#define ecb_hot
		561	#define ecb_cold
		562	#endif
		563
		564	/* put around conditional expressions if you are very sure that the */
		565	/* expression is mostly true or mostly false. note that these return */
		566	/* booleans, not the expression. */
488	#define expect_false(expr) expect ((expr) != 0, 0)	567	#define ecb_expect_false(expr) ecb_expect (!!(expr), 0)
489	#define expect_true(expr) expect ((expr) != 0, 1)	568	#define ecb_expect_true(expr) ecb_expect (!!(expr), 1)
		569	/* ecb.h end */
		570
		571	#define expect_false(cond) ecb_expect_false (cond)
		572	#define expect_true(cond) ecb_expect_true (cond)
		573	#define noinline ecb_noinline
		574
490	#define inline_size static inline	575	#define inline_size ecb_inline
491		576
492	#if EV_FEATURE_CODE	577	#if EV_FEATURE_CODE
493	# define inline_speed static inline	578	# define inline_speed ecb_inline
494	#else	579	#else
495	# define inline_speed static noinline	580	# define inline_speed static noinline
496	#endif	581	#endif
497		582
498	#define NUMPRI (EV_MAXPRI - EV_MINPRI + 1)	583	#define NUMPRI (EV_MAXPRI - EV_MINPRI + 1)
…		…
537	# include "ev_win32.c"	622	# include "ev_win32.c"
538	#endif	623	#endif
539		624
540	/*****************************************************************************/	625	/*****************************************************************************/
541		626
		627	/* define a suitable floor function (only used by periodics atm) */
		628
		629	#if EV_USE_FLOOR
		630	# include <math.h>
		631	# define ev_floor(v) floor (v)
		632	#else
		633
		634	#include <float.h>
		635
		636	/* a floor() replacement function, should be independent of ev_tstamp type */
		637	static ev_tstamp noinline
		638	ev_floor (ev_tstamp v)
		639	{
		640	/* the choice of shift factor is not terribly important */
		641	#if FLT_RADIX != 2 /* assume FLT_RADIX == 10 */
		642	const ev_tstamp shift = sizeof (unsigned long) >= 8 ? 10000000000000000000. : 1000000000.;
		643	#else
		644	const ev_tstamp shift = sizeof (unsigned long) >= 8 ? 18446744073709551616. : 4294967296.;
		645	#endif
		646
		647	/* argument too large for an unsigned long? */
		648	if (expect_false (v >= shift))
		649	{
		650	ev_tstamp f;
		651
		652	if (v == v - 1.)
		653	return v; /* very large number */
		654
		655	f = shift * ev_floor (v * (1. / shift));
		656	return f + ev_floor (v - f);
		657	}
		658
		659	/* special treatment for negative args? */
		660	if (expect_false (v < 0.))
		661	{
		662	ev_tstamp f = -ev_floor (-v);
		663
		664	return f - (f == v ? 0 : 1);
		665	}
		666
		667	/* fits into an unsigned long */
		668	return (unsigned long)v;
		669	}
		670
		671	#endif
		672
		673	/*****************************************************************************/
		674
		675	#ifdef __linux
		676	# include <sys/utsname.h>
		677	#endif
		678
		679	static unsigned int noinline ecb_cold
		680	ev_linux_version (void)
		681	{
		682	#ifdef __linux
		683	unsigned int v = 0;
		684	struct utsname buf;
		685	int i;
		686	char *p = buf.release;
		687
		688	if (uname (&buf))
		689	return 0;
		690
		691	for (i = 3+1; --i; )
		692	{
		693	unsigned int c = 0;
		694
		695	for (;;)
		696	{
		697	if (p >= '0' && p <= '9')
		698	c = c * 10 + *p++ - '0';
		699	else
		700	{
		701	p += *p == '.';
		702	break;
		703	}
		704	}
		705
		706	v = (v << 8) \| c;
		707	}
		708
		709	return v;
		710	#else
		711	return 0;
		712	#endif
		713	}
		714
		715	/*****************************************************************************/
		716
542	#if EV_AVOID_STDIO	717	#if EV_AVOID_STDIO
543	static void noinline	718	static void noinline ecb_cold
544	ev_printerr (const char *msg)	719	ev_printerr (const char *msg)
545	{	720	{
546	write (STDERR_FILENO, msg, strlen (msg));	721	write (STDERR_FILENO, msg, strlen (msg));
547	}	722	}
548	#endif	723	#endif
549		724
550	static void (syserr_cb)(const char msg);	725	static void (syserr_cb)(const char msg);
551		726
552	void	727	void ecb_cold
553	ev_set_syserr_cb (void (cb)(const char msg))	728	ev_set_syserr_cb (void (cb)(const char msg))
554	{	729	{
555	syserr_cb = cb;	730	syserr_cb = cb;
556	}	731	}
557		732
558	static void noinline	733	static void noinline ecb_cold
559	ev_syserr (const char *msg)	734	ev_syserr (const char *msg)
560	{	735	{
561	if (!msg)	736	if (!msg)
562	msg = "(libev) system error";	737	msg = "(libev) system error";
563		738
564	if (syserr_cb)	739	if (syserr_cb)
565	syserr_cb (msg);	740	syserr_cb (msg);
566	else	741	else
567	{	742	{
568	#if EV_AVOID_STDIO	743	#if EV_AVOID_STDIO
569	const char *err = strerror (errno);
570
571	ev_printerr (msg);	744	ev_printerr (msg);
572	ev_printerr (": ");	745	ev_printerr (": ");
573	ev_printerr (err);	746	ev_printerr (strerror (errno));
574	ev_printerr ("\n");	747	ev_printerr ("\n");
575	#else	748	#else
576	perror (msg);	749	perror (msg);
577	#endif	750	#endif
578	abort ();	751	abort ();
…		…
598	#endif	771	#endif
599	}	772	}
600		773
601	static void (alloc)(void *ptr, long size) = ev_realloc_emul;	774	static void (alloc)(void *ptr, long size) = ev_realloc_emul;
602		775
603	void	776	void ecb_cold
604	ev_set_allocator (void (cb)(void *ptr, long size))	777	ev_set_allocator (void (cb)(void *ptr, long size))
605	{	778	{
606	alloc = cb;	779	alloc = cb;
607	}	780	}
608		781
…		…
612	ptr = alloc (ptr, size);	785	ptr = alloc (ptr, size);
613		786
614	if (!ptr && size)	787	if (!ptr && size)
615	{	788	{
616	#if EV_AVOID_STDIO	789	#if EV_AVOID_STDIO
617	ev_printerr ("libev: memory allocation failed, aborting.\n");	790	ev_printerr ("(libev) memory allocation failed, aborting.\n");
618	#else	791	#else
619	fprintf (stderr, "libev: cannot allocate %ld bytes, aborting.", size);	792	fprintf (stderr, "(libev) cannot allocate %ld bytes, aborting.", size);
620	#endif	793	#endif
621	abort ();	794	abort ();
622	}	795	}
623		796
624	return ptr;	797	return ptr;
…		…
641	unsigned char emask; /* the epoll backend stores the actual kernel mask in here */	814	unsigned char emask; /* the epoll backend stores the actual kernel mask in here */
642	unsigned char unused;	815	unsigned char unused;
643	#if EV_USE_EPOLL	816	#if EV_USE_EPOLL
644	unsigned int egen; /* generation counter to counter epoll bugs */	817	unsigned int egen; /* generation counter to counter epoll bugs */
645	#endif	818	#endif
646	#if EV_SELECT_IS_WINSOCKET	819	#if EV_SELECT_IS_WINSOCKET \|\| EV_USE_IOCP
647	SOCKET handle;	820	SOCKET handle;
		821	#endif
		822	#if EV_USE_IOCP
		823	OVERLAPPED or, ow;
648	#endif	824	#endif
649	} ANFD;	825	} ANFD;
650		826
651	/* stores the pending event set for a given watcher */	827	/* stores the pending event set for a given watcher */
652	typedef struct	828	typedef struct
…		…
717	# define EV_RELEASE_CB (void)0	893	# define EV_RELEASE_CB (void)0
718	# define EV_ACQUIRE_CB (void)0	894	# define EV_ACQUIRE_CB (void)0
719	# define EV_INVOKE_PENDING ev_invoke_pending (EV_A)	895	# define EV_INVOKE_PENDING ev_invoke_pending (EV_A)
720	#endif	896	#endif
721		897
722	#define EVUNLOOP_RECURSE 0x80	898	#define EVBREAK_RECURSE 0x80
723		899
724	/*****************************************************************************/	900	/*****************************************************************************/
725		901
726	#ifndef EV_HAVE_EV_TIME	902	#ifndef EV_HAVE_EV_TIME
727	ev_tstamp	903	ev_tstamp
…		…
814	}	990	}
815		991
816	return ncur;	992	return ncur;
817	}	993	}
818		994
819	static noinline void *	995	static void * noinline ecb_cold
820	array_realloc (int elem, void base, int cur, int cnt)	996	array_realloc (int elem, void base, int cur, int cnt)
821	{	997	{
822	cur = array_nextsize (elem, cur, cnt);	998	cur = array_nextsize (elem, cur, cnt);
823	return ev_realloc (base, elem * *cur);	999	return ev_realloc (base, elem * *cur);
824	}	1000	}
…		…
827	memset ((void )(base), 0, sizeof ((base)) * (count))	1003	memset ((void )(base), 0, sizeof ((base)) * (count))
828		1004
829	#define array_needsize(type,base,cur,cnt,init) \	1005	#define array_needsize(type,base,cur,cnt,init) \
830	if (expect_false ((cnt) > (cur))) \	1006	if (expect_false ((cnt) > (cur))) \
831	{ \	1007	{ \
832	int ocur_ = (cur); \	1008	int ecb_unused ocur_ = (cur); \
833	(base) = (type *)array_realloc \	1009	(base) = (type *)array_realloc \
834	(sizeof (type), (base), &(cur), (cnt)); \	1010	(sizeof (type), (base), &(cur), (cnt)); \
835	init ((base) + (ocur_), (cur) - ocur_); \	1011	init ((base) + (ocur_), (cur) - ocur_); \
836	}	1012	}
837		1013
…		…
937	inline_size void	1113	inline_size void
938	fd_reify (EV_P)	1114	fd_reify (EV_P)
939	{	1115	{
940	int i;	1116	int i;
941		1117
		1118	#if EV_SELECT_IS_WINSOCKET \|\| EV_USE_IOCP
		1119	for (i = 0; i < fdchangecnt; ++i)
		1120	{
		1121	int fd = fdchanges [i];
		1122	ANFD *anfd = anfds + fd;
		1123
		1124	if (anfd->reify & EV__IOFDSET && anfd->head)
		1125	{
		1126	SOCKET handle = EV_FD_TO_WIN32_HANDLE (fd);
		1127
		1128	if (handle != anfd->handle)
		1129	{
		1130	unsigned long arg;
		1131
		1132	assert (("libev: only socket fds supported in this configuration", ioctlsocket (handle, FIONREAD, &arg) == 0));
		1133
		1134	/* handle changed, but fd didn't - we need to do it in two steps */
		1135	backend_modify (EV_A_ fd, anfd->events, 0);
		1136	anfd->events = 0;
		1137	anfd->handle = handle;
		1138	}
		1139	}
		1140	}
		1141	#endif
		1142
942	for (i = 0; i < fdchangecnt; ++i)	1143	for (i = 0; i < fdchangecnt; ++i)
943	{	1144	{
944	int fd = fdchanges [i];	1145	int fd = fdchanges [i];
945	ANFD *anfd = anfds + fd;	1146	ANFD *anfd = anfds + fd;
946	ev_io *w;	1147	ev_io *w;
…		…
948	unsigned char o_events = anfd->events;	1149	unsigned char o_events = anfd->events;
949	unsigned char o_reify = anfd->reify;	1150	unsigned char o_reify = anfd->reify;
950		1151
951	anfd->reify = 0;	1152	anfd->reify = 0;
952		1153
953	#if EV_SELECT_IS_WINSOCKET
954	if (o_reify & EV__IOFDSET)
955	{
956	unsigned long arg;
957	anfd->handle = EV_FD_TO_WIN32_HANDLE (fd);
958	assert (("libev: only socket fds supported in this configuration", ioctlsocket (anfd->handle, FIONREAD, &arg) == 0));
959	}
960	#endif
961
962	/if (expect_true (o_reify & EV_ANFD_REIFY)) probably a deoptimisation /	1154	/if (expect_true (o_reify & EV_ANFD_REIFY)) probably a deoptimisation /
963	{	1155	{
964	anfd->events = 0;	1156	anfd->events = 0;
965		1157
966	for (w = (ev_io )anfd->head; w; w = (ev_io )((WL)w)->next)	1158	for (w = (ev_io )anfd->head; w; w = (ev_io )((WL)w)->next)
…		…
991	fdchanges [fdchangecnt - 1] = fd;	1183	fdchanges [fdchangecnt - 1] = fd;
992	}	1184	}
993	}	1185	}
994		1186
995	/* the given fd is invalid/unusable, so make sure it doesn't hurt us anymore */	1187	/* the given fd is invalid/unusable, so make sure it doesn't hurt us anymore */
996	inline_speed void	1188	inline_speed void ecb_cold
997	fd_kill (EV_P_ int fd)	1189	fd_kill (EV_P_ int fd)
998	{	1190	{
999	ev_io *w;	1191	ev_io *w;
1000		1192
1001	while ((w = (ev_io *)anfds [fd].head))	1193	while ((w = (ev_io *)anfds [fd].head))
…		…
1004	ev_feed_event (EV_A_ (W)w, EV_ERROR \| EV_READ \| EV_WRITE);	1196	ev_feed_event (EV_A_ (W)w, EV_ERROR \| EV_READ \| EV_WRITE);
1005	}	1197	}
1006	}	1198	}
1007		1199
1008	/* check whether the given fd is actually valid, for error recovery */	1200	/* check whether the given fd is actually valid, for error recovery */
1009	inline_size int	1201	inline_size int ecb_cold
1010	fd_valid (int fd)	1202	fd_valid (int fd)
1011	{	1203	{
1012	#ifdef _WIN32	1204	#ifdef _WIN32
1013	return EV_FD_TO_WIN32_HANDLE (fd) != -1;	1205	return EV_FD_TO_WIN32_HANDLE (fd) != -1;
1014	#else	1206	#else
1015	return fcntl (fd, F_GETFD) != -1;	1207	return fcntl (fd, F_GETFD) != -1;
1016	#endif	1208	#endif
1017	}	1209	}
1018		1210
1019	/* called on EBADF to verify fds */	1211	/* called on EBADF to verify fds */
1020	static void noinline	1212	static void noinline ecb_cold
1021	fd_ebadf (EV_P)	1213	fd_ebadf (EV_P)
1022	{	1214	{
1023	int fd;	1215	int fd;
1024		1216
1025	for (fd = 0; fd < anfdmax; ++fd)	1217	for (fd = 0; fd < anfdmax; ++fd)
…		…
1027	if (!fd_valid (fd) && errno == EBADF)	1219	if (!fd_valid (fd) && errno == EBADF)
1028	fd_kill (EV_A_ fd);	1220	fd_kill (EV_A_ fd);
1029	}	1221	}
1030		1222
1031	/* called on ENOMEM in select/poll to kill some fds and retry */	1223	/* called on ENOMEM in select/poll to kill some fds and retry */
1032	static void noinline	1224	static void noinline ecb_cold
1033	fd_enomem (EV_P)	1225	fd_enomem (EV_P)
1034	{	1226	{
1035	int fd;	1227	int fd;
1036		1228
1037	for (fd = anfdmax; fd--; )	1229	for (fd = anfdmax; fd--; )
…		…
1232		1424
1233	/*****************************************************************************/	1425	/*****************************************************************************/
1234		1426
1235	#if EV_SIGNAL_ENABLE \|\| EV_ASYNC_ENABLE	1427	#if EV_SIGNAL_ENABLE \|\| EV_ASYNC_ENABLE
1236		1428
1237	static void noinline	1429	static void noinline ecb_cold
1238	evpipe_init (EV_P)	1430	evpipe_init (EV_P)
1239	{	1431	{
1240	if (!ev_is_active (&pipe_w))	1432	if (!ev_is_active (&pipe_w))
1241	{	1433	{
1242	# if EV_USE_EVENTFD	1434	# if EV_USE_EVENTFD
…		…
1264	ev_io_start (EV_A_ &pipe_w);	1456	ev_io_start (EV_A_ &pipe_w);
1265	ev_unref (EV_A); /* watcher should not keep loop alive */	1457	ev_unref (EV_A); /* watcher should not keep loop alive */
1266	}	1458	}
1267	}	1459	}
1268		1460
1269	inline_size void	1461	inline_speed void
1270	evpipe_write (EV_P_ EV_ATOMIC_T *flag)	1462	evpipe_write (EV_P_ EV_ATOMIC_T *flag)
1271	{	1463	{
1272	if (!*flag)	1464	if (expect_true (*flag))
		1465	return;
		1466
		1467	*flag = 1;
		1468
		1469	ECB_MEMORY_FENCE_RELEASE;
		1470
		1471	pipe_write_skipped = 1;
		1472
		1473	ECB_MEMORY_FENCE;
		1474
		1475	if (pipe_write_wanted)
1273	{	1476	{
		1477	int old_errno;
		1478
		1479	pipe_write_skipped = 0; /* optimisation only */
		1480
1274	int old_errno = errno; /* save errno because write might clobber it */	1481	old_errno = errno; /* save errno because write will clobber it */
1275	char dummy;
1276
1277	*flag = 1;
1278		1482
1279	#if EV_USE_EVENTFD	1483	#if EV_USE_EVENTFD
1280	if (evfd >= 0)	1484	if (evfd >= 0)
1281	{	1485	{
1282	uint64_t counter = 1;	1486	uint64_t counter = 1;
1283	write (evfd, &counter, sizeof (uint64_t));	1487	write (evfd, &counter, sizeof (uint64_t));
1284	}	1488	}
1285	else	1489	else
1286	#endif	1490	#endif
		1491	{
1287	/* win32 people keep sending patches that change this write() to send() */	1492	/* win32 people keep sending patches that change this write() to send() */
1288	/* and then run away. but send() is wrong, it wants a socket handle on win32 */	1493	/* and then run away. but send() is wrong, it wants a socket handle on win32 */
1289	/* so when you think this write should be a send instead, please find out */	1494	/* so when you think this write should be a send instead, please find out */
1290	/* where your send() is from - it's definitely not the microsoft send, and */	1495	/* where your send() is from - it's definitely not the microsoft send, and */
1291	/* tell me. thank you. */	1496	/* tell me. thank you. */
1292	write (evpipe [1], &dummy, 1);	1497	write (evpipe [1], &(evpipe [1]), 1);
		1498	}
1293		1499
1294	errno = old_errno;	1500	errno = old_errno;
1295	}	1501	}
1296	}	1502	}
1297		1503
…		…
1300	static void	1506	static void
1301	pipecb (EV_P_ ev_io *iow, int revents)	1507	pipecb (EV_P_ ev_io *iow, int revents)
1302	{	1508	{
1303	int i;	1509	int i;
1304		1510
		1511	if (revents & EV_READ)
		1512	{
1305	#if EV_USE_EVENTFD	1513	#if EV_USE_EVENTFD
1306	if (evfd >= 0)	1514	if (evfd >= 0)
1307	{	1515	{
1308	uint64_t counter;	1516	uint64_t counter;
1309	read (evfd, &counter, sizeof (uint64_t));	1517	read (evfd, &counter, sizeof (uint64_t));
1310	}	1518	}
1311	else	1519	else
1312	#endif	1520	#endif
1313	{	1521	{
1314	char dummy;	1522	char dummy;
1315	/* see discussion in evpipe_write when you think this read should be recv in win32 */	1523	/* see discussion in evpipe_write when you think this read should be recv in win32 */
1316	read (evpipe [0], &dummy, 1);	1524	read (evpipe [0], &dummy, 1);
		1525	}
1317	}	1526	}
1318		1527
		1528	pipe_write_skipped = 0;
		1529
		1530	#if EV_SIGNAL_ENABLE
1319	if (sig_pending)	1531	if (sig_pending)
1320	{	1532	{
1321	sig_pending = 0;	1533	sig_pending = 0;
1322		1534
1323	for (i = EV_NSIG - 1; i--; )	1535	for (i = EV_NSIG - 1; i--; )
1324	if (expect_false (signals [i].pending))	1536	if (expect_false (signals [i].pending))
1325	ev_feed_signal_event (EV_A_ i + 1);	1537	ev_feed_signal_event (EV_A_ i + 1);
1326	}	1538	}
		1539	#endif
1327		1540
1328	#if EV_ASYNC_ENABLE	1541	#if EV_ASYNC_ENABLE
1329	if (async_pending)	1542	if (async_pending)
1330	{	1543	{
1331	async_pending = 0;	1544	async_pending = 0;
…		…
1340	#endif	1553	#endif
1341	}	1554	}
1342		1555
1343	/*****************************************************************************/	1556	/*****************************************************************************/
1344		1557
		1558	void
		1559	ev_feed_signal (int signum)
		1560	{
		1561	#if EV_MULTIPLICITY
		1562	EV_P = signals [signum - 1].loop;
		1563
		1564	if (!EV_A)
		1565	return;
		1566	#endif
		1567
		1568	if (!ev_active (&pipe_w))
		1569	return;
		1570
		1571	signals [signum - 1].pending = 1;
		1572	evpipe_write (EV_A_ &sig_pending);
		1573	}
		1574
1345	static void	1575	static void
1346	ev_sighandler (int signum)	1576	ev_sighandler (int signum)
1347	{	1577	{
1348	#if EV_MULTIPLICITY
1349	EV_P = signals [signum - 1].loop;
1350	#endif
1351
1352	#ifdef _WIN32	1578	#ifdef _WIN32
1353	signal (signum, ev_sighandler);	1579	signal (signum, ev_sighandler);
1354	#endif	1580	#endif
1355		1581
1356	signals [signum - 1].pending = 1;	1582	ev_feed_signal (signum);
1357	evpipe_write (EV_A_ &sig_pending);
1358	}	1583	}
1359		1584
1360	void noinline	1585	void noinline
1361	ev_feed_signal_event (EV_P_ int signum)	1586	ev_feed_signal_event (EV_P_ int signum)
1362	{	1587	{
…		…
1462		1687
1463	#endif	1688	#endif
1464		1689
1465	/*****************************************************************************/	1690	/*****************************************************************************/
1466		1691
		1692	#if EV_USE_IOCP
		1693	# include "ev_iocp.c"
		1694	#endif
1467	#if EV_USE_PORT	1695	#if EV_USE_PORT
1468	# include "ev_port.c"	1696	# include "ev_port.c"
1469	#endif	1697	#endif
1470	#if EV_USE_KQUEUE	1698	#if EV_USE_KQUEUE
1471	# include "ev_kqueue.c"	1699	# include "ev_kqueue.c"
…		…
1478	#endif	1706	#endif
1479	#if EV_USE_SELECT	1707	#if EV_USE_SELECT
1480	# include "ev_select.c"	1708	# include "ev_select.c"
1481	#endif	1709	#endif
1482		1710
1483	int	1711	int ecb_cold
1484	ev_version_major (void)	1712	ev_version_major (void)
1485	{	1713	{
1486	return EV_VERSION_MAJOR;	1714	return EV_VERSION_MAJOR;
1487	}	1715	}
1488		1716
1489	int	1717	int ecb_cold
1490	ev_version_minor (void)	1718	ev_version_minor (void)
1491	{	1719	{
1492	return EV_VERSION_MINOR;	1720	return EV_VERSION_MINOR;
1493	}	1721	}
1494		1722
1495	/* return true if we are running with elevated privileges and should ignore env variables */	1723	/* return true if we are running with elevated privileges and should ignore env variables */
1496	int inline_size	1724	int inline_size ecb_cold
1497	enable_secure (void)	1725	enable_secure (void)
1498	{	1726	{
1499	#ifdef _WIN32	1727	#ifdef _WIN32
1500	return 0;	1728	return 0;
1501	#else	1729	#else
1502	return getuid () != geteuid ()	1730	return getuid () != geteuid ()
1503	\|\| getgid () != getegid ();	1731	\|\| getgid () != getegid ();
1504	#endif	1732	#endif
1505	}	1733	}
1506		1734
1507	unsigned int	1735	unsigned int ecb_cold
1508	ev_supported_backends (void)	1736	ev_supported_backends (void)
1509	{	1737	{
1510	unsigned int flags = 0;	1738	unsigned int flags = 0;
1511		1739
1512	if (EV_USE_PORT ) flags \|= EVBACKEND_PORT;	1740	if (EV_USE_PORT ) flags \|= EVBACKEND_PORT;
…		…
1516	if (EV_USE_SELECT) flags \|= EVBACKEND_SELECT;	1744	if (EV_USE_SELECT) flags \|= EVBACKEND_SELECT;
1517		1745
1518	return flags;	1746	return flags;
1519	}	1747	}
1520		1748
1521	unsigned int	1749	unsigned int ecb_cold
1522	ev_recommended_backends (void)	1750	ev_recommended_backends (void)
1523	{	1751	{
1524	unsigned int flags = ev_supported_backends ();	1752	unsigned int flags = ev_supported_backends ();
1525		1753
1526	#ifndef __NetBSD__	1754	#ifndef __NetBSD__
…		…
1538	#endif	1766	#endif
1539		1767
1540	return flags;	1768	return flags;
1541	}	1769	}
1542		1770
1543	unsigned int	1771	unsigned int ecb_cold
1544	ev_embeddable_backends (void)	1772	ev_embeddable_backends (void)
1545	{	1773	{
1546	int flags = EVBACKEND_EPOLL \| EVBACKEND_KQUEUE \| EVBACKEND_PORT;	1774	int flags = EVBACKEND_EPOLL \| EVBACKEND_KQUEUE \| EVBACKEND_PORT;
1547		1775
1548	/* epoll embeddability broken on all linux versions up to at least 2.6.23 */	1776	/* epoll embeddability broken on all linux versions up to at least 2.6.23 */
1549	/* please fix it and tell me how to detect the fix */	1777	if (ev_linux_version () < 0x020620) /* disable it on linux < 2.6.32 */
1550	flags &= ~EVBACKEND_EPOLL;	1778	flags &= ~EVBACKEND_EPOLL;
1551		1779
1552	return flags;	1780	return flags;
1553	}	1781	}
1554		1782
1555	unsigned int	1783	unsigned int
…		…
1593	ev_userdata (EV_P)	1821	ev_userdata (EV_P)
1594	{	1822	{
1595	return userdata;	1823	return userdata;
1596	}	1824	}
1597		1825
		1826	void
1598	void ev_set_invoke_pending_cb (EV_P_ void (*invoke_pending_cb)(EV_P))	1827	ev_set_invoke_pending_cb (EV_P_ void (*invoke_pending_cb)(EV_P))
1599	{	1828	{
1600	invoke_cb = invoke_pending_cb;	1829	invoke_cb = invoke_pending_cb;
1601	}	1830	}
1602		1831
		1832	void
1603	void ev_set_loop_release_cb (EV_P_ void (release)(EV_P), void (acquire)(EV_P))	1833	ev_set_loop_release_cb (EV_P_ void (release)(EV_P), void (acquire)(EV_P))
1604	{	1834	{
1605	release_cb = release;	1835	release_cb = release;
1606	acquire_cb = acquire;	1836	acquire_cb = acquire;
1607	}	1837	}
1608	#endif	1838	#endif
1609		1839
1610	/* initialise a loop structure, must be zero-initialised */	1840	/* initialise a loop structure, must be zero-initialised */
1611	static void noinline	1841	static void noinline ecb_cold
1612	loop_init (EV_P_ unsigned int flags)	1842	loop_init (EV_P_ unsigned int flags)
1613	{	1843	{
1614	if (!backend)	1844	if (!backend)
1615	{	1845	{
		1846	origflags = flags;
		1847
1616	#if EV_USE_REALTIME	1848	#if EV_USE_REALTIME
1617	if (!have_realtime)	1849	if (!have_realtime)
1618	{	1850	{
1619	struct timespec ts;	1851	struct timespec ts;
1620		1852
…		…
1642	if (!(flags & EVFLAG_NOENV)	1874	if (!(flags & EVFLAG_NOENV)
1643	&& !enable_secure ()	1875	&& !enable_secure ()
1644	&& getenv ("LIBEV_FLAGS"))	1876	&& getenv ("LIBEV_FLAGS"))
1645	flags = atoi (getenv ("LIBEV_FLAGS"));	1877	flags = atoi (getenv ("LIBEV_FLAGS"));
1646		1878
1647	ev_rt_now = ev_time ();	1879	ev_rt_now = ev_time ();
1648	mn_now = get_clock ();	1880	mn_now = get_clock ();
1649	now_floor = mn_now;	1881	now_floor = mn_now;
1650	rtmn_diff = ev_rt_now - mn_now;	1882	rtmn_diff = ev_rt_now - mn_now;
1651	#if EV_FEATURE_API	1883	#if EV_FEATURE_API
1652	invoke_cb = ev_invoke_pending;	1884	invoke_cb = ev_invoke_pending;
1653	#endif	1885	#endif
1654		1886
1655	io_blocktime = 0.;	1887	io_blocktime = 0.;
1656	timeout_blocktime = 0.;	1888	timeout_blocktime = 0.;
1657	backend = 0;	1889	backend = 0;
1658	backend_fd = -1;	1890	backend_fd = -1;
1659	sig_pending = 0;	1891	sig_pending = 0;
1660	#if EV_ASYNC_ENABLE	1892	#if EV_ASYNC_ENABLE
1661	async_pending = 0;	1893	async_pending = 0;
1662	#endif	1894	#endif
		1895	pipe_write_skipped = 0;
		1896	pipe_write_wanted = 0;
1663	#if EV_USE_INOTIFY	1897	#if EV_USE_INOTIFY
1664	fs_fd = flags & EVFLAG_NOINOTIFY ? -1 : -2;	1898	fs_fd = flags & EVFLAG_NOINOTIFY ? -1 : -2;
1665	#endif	1899	#endif
1666	#if EV_USE_SIGNALFD	1900	#if EV_USE_SIGNALFD
1667	sigfd = flags & EVFLAG_SIGNALFD ? -2 : -1;	1901	sigfd = flags & EVFLAG_SIGNALFD ? -2 : -1;
1668	#endif	1902	#endif
1669		1903
1670	if (!(flags & 0x0000ffffU))	1904	if (!(flags & EVBACKEND_MASK))
1671	flags \|= ev_recommended_backends ();	1905	flags \|= ev_recommended_backends ();
1672		1906
		1907	#if EV_USE_IOCP
		1908	if (!backend && (flags & EVBACKEND_IOCP )) backend = iocp_init (EV_A_ flags);
		1909	#endif
1673	#if EV_USE_PORT	1910	#if EV_USE_PORT
1674	if (!backend && (flags & EVBACKEND_PORT )) backend = port_init (EV_A_ flags);	1911	if (!backend && (flags & EVBACKEND_PORT )) backend = port_init (EV_A_ flags);
1675	#endif	1912	#endif
1676	#if EV_USE_KQUEUE	1913	#if EV_USE_KQUEUE
1677	if (!backend && (flags & EVBACKEND_KQUEUE)) backend = kqueue_init (EV_A_ flags);	1914	if (!backend && (flags & EVBACKEND_KQUEUE)) backend = kqueue_init (EV_A_ flags);
…		…
1694	#endif	1931	#endif
1695	}	1932	}
1696	}	1933	}
1697		1934
1698	/* free up a loop structure */	1935	/* free up a loop structure */
1699	static void noinline	1936	void ecb_cold
1700	loop_destroy (EV_P)	1937	ev_loop_destroy (EV_P)
1701	{	1938	{
1702	int i;	1939	int i;
		1940
		1941	#if EV_MULTIPLICITY
		1942	/* mimic free (0) */
		1943	if (!EV_A)
		1944	return;
		1945	#endif
		1946
		1947	#if EV_CLEANUP_ENABLE
		1948	/* queue cleanup watchers (and execute them) */
		1949	if (expect_false (cleanupcnt))
		1950	{
		1951	queue_events (EV_A_ (W *)cleanups, cleanupcnt, EV_CLEANUP);
		1952	EV_INVOKE_PENDING;
		1953	}
		1954	#endif
		1955
		1956	#if EV_CHILD_ENABLE
		1957	if (ev_is_active (&childev))
		1958	{
		1959	ev_ref (EV_A); /* child watcher */
		1960	ev_signal_stop (EV_A_ &childev);
		1961	}
		1962	#endif
1703		1963
1704	if (ev_is_active (&pipe_w))	1964	if (ev_is_active (&pipe_w))
1705	{	1965	{
1706	/ev_ref (EV_A);/	1966	/ev_ref (EV_A);/
1707	/ev_io_stop (EV_A_ &pipe_w);/	1967	/ev_io_stop (EV_A_ &pipe_w);/
…		…
1729	#endif	1989	#endif
1730		1990
1731	if (backend_fd >= 0)	1991	if (backend_fd >= 0)
1732	close (backend_fd);	1992	close (backend_fd);
1733		1993
		1994	#if EV_USE_IOCP
		1995	if (backend == EVBACKEND_IOCP ) iocp_destroy (EV_A);
		1996	#endif
1734	#if EV_USE_PORT	1997	#if EV_USE_PORT
1735	if (backend == EVBACKEND_PORT ) port_destroy (EV_A);	1998	if (backend == EVBACKEND_PORT ) port_destroy (EV_A);
1736	#endif	1999	#endif
1737	#if EV_USE_KQUEUE	2000	#if EV_USE_KQUEUE
1738	if (backend == EVBACKEND_KQUEUE) kqueue_destroy (EV_A);	2001	if (backend == EVBACKEND_KQUEUE) kqueue_destroy (EV_A);
…		…
1765	array_free (periodic, EMPTY);	2028	array_free (periodic, EMPTY);
1766	#endif	2029	#endif
1767	#if EV_FORK_ENABLE	2030	#if EV_FORK_ENABLE
1768	array_free (fork, EMPTY);	2031	array_free (fork, EMPTY);
1769	#endif	2032	#endif
		2033	#if EV_CLEANUP_ENABLE
		2034	array_free (cleanup, EMPTY);
		2035	#endif
1770	array_free (prepare, EMPTY);	2036	array_free (prepare, EMPTY);
1771	array_free (check, EMPTY);	2037	array_free (check, EMPTY);
1772	#if EV_ASYNC_ENABLE	2038	#if EV_ASYNC_ENABLE
1773	array_free (async, EMPTY);	2039	array_free (async, EMPTY);
1774	#endif	2040	#endif
1775		2041
1776	backend = 0;	2042	backend = 0;
		2043
		2044	#if EV_MULTIPLICITY
		2045	if (ev_is_default_loop (EV_A))
		2046	#endif
		2047	ev_default_loop_ptr = 0;
		2048	#if EV_MULTIPLICITY
		2049	else
		2050	ev_free (EV_A);
		2051	#endif
1777	}	2052	}
1778		2053
1779	#if EV_USE_INOTIFY	2054	#if EV_USE_INOTIFY
1780	inline_size void infy_fork (EV_P);	2055	inline_size void infy_fork (EV_P);
1781	#endif	2056	#endif
…		…
1796	infy_fork (EV_A);	2071	infy_fork (EV_A);
1797	#endif	2072	#endif
1798		2073
1799	if (ev_is_active (&pipe_w))	2074	if (ev_is_active (&pipe_w))
1800	{	2075	{
1801	/* this "locks" the handlers against writing to the pipe */	2076	/* pipe_write_wanted must be false now, so modifying fd vars should be safe */
1802	/* while we modify the fd vars */
1803	sig_pending = 1;
1804	#if EV_ASYNC_ENABLE
1805	async_pending = 1;
1806	#endif
1807		2077
1808	ev_ref (EV_A);	2078	ev_ref (EV_A);
1809	ev_io_stop (EV_A_ &pipe_w);	2079	ev_io_stop (EV_A_ &pipe_w);
1810		2080
1811	#if EV_USE_EVENTFD	2081	#if EV_USE_EVENTFD
…		…
1829	postfork = 0;	2099	postfork = 0;
1830	}	2100	}
1831		2101
1832	#if EV_MULTIPLICITY	2102	#if EV_MULTIPLICITY
1833		2103
1834	struct ev_loop *	2104	struct ev_loop * ecb_cold
1835	ev_loop_new (unsigned int flags)	2105	ev_loop_new (unsigned int flags)
1836	{	2106	{
1837	EV_P = (struct ev_loop *)ev_malloc (sizeof (struct ev_loop));	2107	EV_P = (struct ev_loop *)ev_malloc (sizeof (struct ev_loop));
1838		2108
1839	memset (EV_A, 0, sizeof (struct ev_loop));	2109	memset (EV_A, 0, sizeof (struct ev_loop));
1840	loop_init (EV_A_ flags);	2110	loop_init (EV_A_ flags);
1841		2111
1842	if (ev_backend (EV_A))	2112	if (ev_backend (EV_A))
1843	return EV_A;	2113	return EV_A;
1844		2114
		2115	ev_free (EV_A);
1845	return 0;	2116	return 0;
1846	}	2117	}
1847		2118
1848	void
1849	ev_loop_destroy (EV_P)
1850	{
1851	loop_destroy (EV_A);
1852	ev_free (loop);
1853	}
1854
1855	void
1856	ev_loop_fork (EV_P)
1857	{
1858	postfork = 1; /* must be in line with ev_default_fork */
1859	}
1860	#endif /* multiplicity */	2119	#endif /* multiplicity */
1861		2120
1862	#if EV_VERIFY	2121	#if EV_VERIFY
1863	static void noinline	2122	static void noinline ecb_cold
1864	verify_watcher (EV_P_ W w)	2123	verify_watcher (EV_P_ W w)
1865	{	2124	{
1866	assert (("libev: watcher has invalid priority", ABSPRI (w) >= 0 && ABSPRI (w) < NUMPRI));	2125	assert (("libev: watcher has invalid priority", ABSPRI (w) >= 0 && ABSPRI (w) < NUMPRI));
1867		2126
1868	if (w->pending)	2127	if (w->pending)
1869	assert (("libev: pending watcher not on pending queue", pendings [ABSPRI (w)][w->pending - 1].w == w));	2128	assert (("libev: pending watcher not on pending queue", pendings [ABSPRI (w)][w->pending - 1].w == w));
1870	}	2129	}
1871		2130
1872	static void noinline	2131	static void noinline ecb_cold
1873	verify_heap (EV_P_ ANHE *heap, int N)	2132	verify_heap (EV_P_ ANHE *heap, int N)
1874	{	2133	{
1875	int i;	2134	int i;
1876		2135
1877	for (i = HEAP0; i < N + HEAP0; ++i)	2136	for (i = HEAP0; i < N + HEAP0; ++i)
…		…
1882		2141
1883	verify_watcher (EV_A_ (W)ANHE_w (heap [i]));	2142	verify_watcher (EV_A_ (W)ANHE_w (heap [i]));
1884	}	2143	}
1885	}	2144	}
1886		2145
1887	static void noinline	2146	static void noinline ecb_cold
1888	array_verify (EV_P_ W *ws, int cnt)	2147	array_verify (EV_P_ W *ws, int cnt)
1889	{	2148	{
1890	while (cnt--)	2149	while (cnt--)
1891	{	2150	{
1892	assert (("libev: active index mismatch", ev_active (ws [cnt]) == cnt + 1));	2151	assert (("libev: active index mismatch", ev_active (ws [cnt]) == cnt + 1));
…		…
1894	}	2153	}
1895	}	2154	}
1896	#endif	2155	#endif
1897		2156
1898	#if EV_FEATURE_API	2157	#if EV_FEATURE_API
1899	void	2158	void ecb_cold
1900	ev_verify (EV_P)	2159	ev_verify (EV_P)
1901	{	2160	{
1902	#if EV_VERIFY	2161	#if EV_VERIFY
1903	int i;	2162	int i;
1904	WL w;	2163	WL w;
…		…
1939	#if EV_FORK_ENABLE	2198	#if EV_FORK_ENABLE
1940	assert (forkmax >= forkcnt);	2199	assert (forkmax >= forkcnt);
1941	array_verify (EV_A_ (W *)forks, forkcnt);	2200	array_verify (EV_A_ (W *)forks, forkcnt);
1942	#endif	2201	#endif
1943		2202
		2203	#if EV_CLEANUP_ENABLE
		2204	assert (cleanupmax >= cleanupcnt);
		2205	array_verify (EV_A_ (W *)cleanups, cleanupcnt);
		2206	#endif
		2207
1944	#if EV_ASYNC_ENABLE	2208	#if EV_ASYNC_ENABLE
1945	assert (asyncmax >= asynccnt);	2209	assert (asyncmax >= asynccnt);
1946	array_verify (EV_A_ (W *)asyncs, asynccnt);	2210	array_verify (EV_A_ (W *)asyncs, asynccnt);
1947	#endif	2211	#endif
1948		2212
…		…
1965	#endif	2229	#endif
1966	}	2230	}
1967	#endif	2231	#endif
1968		2232
1969	#if EV_MULTIPLICITY	2233	#if EV_MULTIPLICITY
1970	struct ev_loop *	2234	struct ev_loop * ecb_cold
1971	ev_default_loop_init (unsigned int flags)
1972	#else	2235	#else
1973	int	2236	int
		2237	#endif
1974	ev_default_loop (unsigned int flags)	2238	ev_default_loop (unsigned int flags)
1975	#endif
1976	{	2239	{
1977	if (!ev_default_loop_ptr)	2240	if (!ev_default_loop_ptr)
1978	{	2241	{
1979	#if EV_MULTIPLICITY	2242	#if EV_MULTIPLICITY
1980	EV_P = ev_default_loop_ptr = &default_loop_struct;	2243	EV_P = ev_default_loop_ptr = &default_loop_struct;
…		…
1999		2262
2000	return ev_default_loop_ptr;	2263	return ev_default_loop_ptr;
2001	}	2264	}
2002		2265
2003	void	2266	void
2004	ev_default_destroy (void)	2267	ev_loop_fork (EV_P)
2005	{	2268	{
2006	#if EV_MULTIPLICITY
2007	EV_P = ev_default_loop_ptr;
2008	#endif
2009
2010	ev_default_loop_ptr = 0;
2011
2012	#if EV_CHILD_ENABLE
2013	ev_ref (EV_A); /* child watcher */
2014	ev_signal_stop (EV_A_ &childev);
2015	#endif
2016
2017	loop_destroy (EV_A);
2018	}
2019
2020	void
2021	ev_default_fork (void)
2022	{
2023	#if EV_MULTIPLICITY
2024	EV_P = ev_default_loop_ptr;
2025	#endif
2026
2027	postfork = 1; /* must be in line with ev_loop_fork */	2269	postfork = 1; /* must be in line with ev_default_fork */
2028	}	2270	}
2029		2271
2030	/*****************************************************************************/	2272	/*****************************************************************************/
2031		2273
2032	void	2274	void
…		…
2054		2296
2055	for (pri = NUMPRI; pri--; )	2297	for (pri = NUMPRI; pri--; )
2056	while (pendingcnt [pri])	2298	while (pendingcnt [pri])
2057	{	2299	{
2058	ANPENDING *p = pendings [pri] + --pendingcnt [pri];	2300	ANPENDING *p = pendings [pri] + --pendingcnt [pri];
2059
2060	/assert (("libev: non-pending watcher on pending list", p->w->pending));/
2061	/* ^ this is no longer true, as pending_w could be here */
2062		2301
2063	p->w->pending = 0;	2302	p->w->pending = 0;
2064	EV_CB_INVOKE (p->w, p->events);	2303	EV_CB_INVOKE (p->w, p->events);
2065	EV_FREQUENT_CHECK;	2304	EV_FREQUENT_CHECK;
2066	}	2305	}
…		…
2128	feed_reverse_done (EV_A_ EV_TIMER);	2367	feed_reverse_done (EV_A_ EV_TIMER);
2129	}	2368	}
2130	}	2369	}
2131		2370
2132	#if EV_PERIODIC_ENABLE	2371	#if EV_PERIODIC_ENABLE
		2372
		2373	static void noinline
		2374	periodic_recalc (EV_P_ ev_periodic *w)
		2375	{
		2376	ev_tstamp interval = w->interval > MIN_INTERVAL ? w->interval : MIN_INTERVAL;
		2377	ev_tstamp at = w->offset + interval * ev_floor ((ev_rt_now - w->offset) / interval);
		2378
		2379	/* the above almost always errs on the low side */
		2380	while (at <= ev_rt_now)
		2381	{
		2382	ev_tstamp nat = at + w->interval;
		2383
		2384	/* when resolution fails us, we use ev_rt_now */
		2385	if (expect_false (nat == at))
		2386	{
		2387	at = ev_rt_now;
		2388	break;
		2389	}
		2390
		2391	at = nat;
		2392	}
		2393
		2394	ev_at (w) = at;
		2395	}
		2396
2133	/* make periodics pending */	2397	/* make periodics pending */
2134	inline_size void	2398	inline_size void
2135	periodics_reify (EV_P)	2399	periodics_reify (EV_P)
2136	{	2400	{
2137	EV_FREQUENT_CHECK;	2401	EV_FREQUENT_CHECK;
…		…
2156	ANHE_at_cache (periodics [HEAP0]);	2420	ANHE_at_cache (periodics [HEAP0]);
2157	downheap (periodics, periodiccnt, HEAP0);	2421	downheap (periodics, periodiccnt, HEAP0);
2158	}	2422	}
2159	else if (w->interval)	2423	else if (w->interval)
2160	{	2424	{
2161	ev_at (w) = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval;	2425	periodic_recalc (EV_A_ w);
2162	/* if next trigger time is not sufficiently in the future, put it there */
2163	/* this might happen because of floating point inexactness */
2164	if (ev_at (w) - ev_rt_now < TIME_EPSILON)
2165	{
2166	ev_at (w) += w->interval;
2167
2168	/* if interval is unreasonably low we might still have a time in the past */
2169	/* so correct this. this will make the periodic very inexact, but the user */
2170	/* has effectively asked to get triggered more often than possible */
2171	if (ev_at (w) < ev_rt_now)
2172	ev_at (w) = ev_rt_now;
2173	}
2174
2175	ANHE_at_cache (periodics [HEAP0]);	2426	ANHE_at_cache (periodics [HEAP0]);
2176	downheap (periodics, periodiccnt, HEAP0);	2427	downheap (periodics, periodiccnt, HEAP0);
2177	}	2428	}
2178	else	2429	else
2179	ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */	2430	ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */
…		…
2187	}	2438	}
2188	}	2439	}
2189		2440
2190	/* simply recalculate all periodics */	2441	/* simply recalculate all periodics */
2191	/* TODO: maybe ensure that at least one event happens when jumping forward? */	2442	/* TODO: maybe ensure that at least one event happens when jumping forward? */
2192	static void noinline	2443	static void noinline ecb_cold
2193	periodics_reschedule (EV_P)	2444	periodics_reschedule (EV_P)
2194	{	2445	{
2195	int i;	2446	int i;
2196		2447
2197	/* adjust periodics after time jump */	2448	/* adjust periodics after time jump */
…		…
2200	ev_periodic w = (ev_periodic )ANHE_w (periodics [i]);	2451	ev_periodic w = (ev_periodic )ANHE_w (periodics [i]);
2201		2452
2202	if (w->reschedule_cb)	2453	if (w->reschedule_cb)
2203	ev_at (w) = w->reschedule_cb (w, ev_rt_now);	2454	ev_at (w) = w->reschedule_cb (w, ev_rt_now);
2204	else if (w->interval)	2455	else if (w->interval)
2205	ev_at (w) = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval;	2456	periodic_recalc (EV_A_ w);
2206		2457
2207	ANHE_at_cache (periodics [i]);	2458	ANHE_at_cache (periodics [i]);
2208	}	2459	}
2209		2460
2210	reheap (periodics, periodiccnt);	2461	reheap (periodics, periodiccnt);
2211	}	2462	}
2212	#endif	2463	#endif
2213		2464
2214	/* adjust all timers by a given offset */	2465	/* adjust all timers by a given offset */
2215	static void noinline	2466	static void noinline ecb_cold
2216	timers_reschedule (EV_P_ ev_tstamp adjust)	2467	timers_reschedule (EV_P_ ev_tstamp adjust)
2217	{	2468	{
2218	int i;	2469	int i;
2219		2470
2220	for (i = 0; i < timercnt; ++i)	2471	for (i = 0; i < timercnt; ++i)
…		…
2257	* doesn't hurt either as we only do this on time-jumps or	2508	* doesn't hurt either as we only do this on time-jumps or
2258	* in the unlikely event of having been preempted here.	2509	* in the unlikely event of having been preempted here.
2259	*/	2510	*/
2260	for (i = 4; --i; )	2511	for (i = 4; --i; )
2261	{	2512	{
		2513	ev_tstamp diff;
2262	rtmn_diff = ev_rt_now - mn_now;	2514	rtmn_diff = ev_rt_now - mn_now;
2263		2515
		2516	diff = odiff - rtmn_diff;
		2517
2264	if (expect_true (fabs (odiff - rtmn_diff) < MIN_TIMEJUMP))	2518	if (expect_true ((diff < 0. ? -diff : diff) < MIN_TIMEJUMP))
2265	return; /* all is well */	2519	return; /* all is well */
2266		2520
2267	ev_rt_now = ev_time ();	2521	ev_rt_now = ev_time ();
2268	mn_now = get_clock ();	2522	mn_now = get_clock ();
2269	now_floor = mn_now;	2523	now_floor = mn_now;
…		…
2292	mn_now = ev_rt_now;	2546	mn_now = ev_rt_now;
2293	}	2547	}
2294	}	2548	}
2295		2549
2296	void	2550	void
2297	ev_loop (EV_P_ int flags)	2551	ev_run (EV_P_ int flags)
2298	{	2552	{
2299	#if EV_FEATURE_API	2553	#if EV_FEATURE_API
2300	++loop_depth;	2554	++loop_depth;
2301	#endif	2555	#endif
2302		2556
2303	assert (("libev: ev_loop recursion during release detected", loop_done != EVUNLOOP_RECURSE));	2557	assert (("libev: ev_loop recursion during release detected", loop_done != EVBREAK_RECURSE));
2304		2558
2305	loop_done = EVUNLOOP_CANCEL;	2559	loop_done = EVBREAK_CANCEL;
2306		2560
2307	EV_INVOKE_PENDING; /* in case we recurse, ensure ordering stays nice and clean */	2561	EV_INVOKE_PENDING; /* in case we recurse, ensure ordering stays nice and clean */
2308		2562
2309	do	2563	do
2310	{	2564	{
…		…
2353	/* calculate blocking time */	2607	/* calculate blocking time */
2354	{	2608	{
2355	ev_tstamp waittime = 0.;	2609	ev_tstamp waittime = 0.;
2356	ev_tstamp sleeptime = 0.;	2610	ev_tstamp sleeptime = 0.;
2357		2611
		2612	/* remember old timestamp for io_blocktime calculation */
		2613	ev_tstamp prev_mn_now = mn_now;
		2614
		2615	/* update time to cancel out callback processing overhead */
		2616	time_update (EV_A_ 1e100);
		2617
		2618	/* from now on, we want a pipe-wake-up */
		2619	pipe_write_wanted = 1;
		2620
		2621	ECB_MEMORY_FENCE;
		2622
2358	if (expect_true (!(flags & EVLOOP_NONBLOCK \|\| idleall \|\| !activecnt)))	2623	if (expect_true (!(flags & EVRUN_NOWAIT \|\| idleall \|\| !activecnt \|\| pipe_write_skipped)))
2359	{	2624	{
2360	/* remember old timestamp for io_blocktime calculation */
2361	ev_tstamp prev_mn_now = mn_now;
2362
2363	/* update time to cancel out callback processing overhead */
2364	time_update (EV_A_ 1e100);
2365
2366	waittime = MAX_BLOCKTIME;	2625	waittime = MAX_BLOCKTIME;
2367		2626
2368	if (timercnt)	2627	if (timercnt)
2369	{	2628	{
2370	ev_tstamp to = ANHE_at (timers [HEAP0]) - mn_now + backend_fudge;	2629	ev_tstamp to = ANHE_at (timers [HEAP0]) - mn_now;
2371	if (waittime > to) waittime = to;	2630	if (waittime > to) waittime = to;
2372	}	2631	}
2373		2632
2374	#if EV_PERIODIC_ENABLE	2633	#if EV_PERIODIC_ENABLE
2375	if (periodiccnt)	2634	if (periodiccnt)
2376	{	2635	{
2377	ev_tstamp to = ANHE_at (periodics [HEAP0]) - ev_rt_now + backend_fudge;	2636	ev_tstamp to = ANHE_at (periodics [HEAP0]) - ev_rt_now;
2378	if (waittime > to) waittime = to;	2637	if (waittime > to) waittime = to;
2379	}	2638	}
2380	#endif	2639	#endif
2381		2640
2382	/* don't let timeouts decrease the waittime below timeout_blocktime */	2641	/* don't let timeouts decrease the waittime below timeout_blocktime */
2383	if (expect_false (waittime < timeout_blocktime))	2642	if (expect_false (waittime < timeout_blocktime))
2384	waittime = timeout_blocktime;	2643	waittime = timeout_blocktime;
		2644
		2645	/* at this point, we NEED to wait, so we have to ensure */
		2646	/* to pass a minimum nonzero value to the backend */
		2647	if (expect_false (waittime < backend_mintime))
		2648	waittime = backend_mintime;
2385		2649
2386	/* extra check because io_blocktime is commonly 0 */	2650	/* extra check because io_blocktime is commonly 0 */
2387	if (expect_false (io_blocktime))	2651	if (expect_false (io_blocktime))
2388	{	2652	{
2389	sleeptime = io_blocktime - (mn_now - prev_mn_now);	2653	sleeptime = io_blocktime - (mn_now - prev_mn_now);
2390		2654
2391	if (sleeptime > waittime - backend_fudge)	2655	if (sleeptime > waittime - backend_mintime)
2392	sleeptime = waittime - backend_fudge;	2656	sleeptime = waittime - backend_mintime;
2393		2657
2394	if (expect_true (sleeptime > 0.))	2658	if (expect_true (sleeptime > 0.))
2395	{	2659	{
2396	ev_sleep (sleeptime);	2660	ev_sleep (sleeptime);
2397	waittime -= sleeptime;	2661	waittime -= sleeptime;
…		…
2400	}	2664	}
2401		2665
2402	#if EV_FEATURE_API	2666	#if EV_FEATURE_API
2403	++loop_count;	2667	++loop_count;
2404	#endif	2668	#endif
2405	assert ((loop_done = EVUNLOOP_RECURSE, 1)); /* assert for side effect */	2669	assert ((loop_done = EVBREAK_RECURSE, 1)); /* assert for side effect */
2406	backend_poll (EV_A_ waittime);	2670	backend_poll (EV_A_ waittime);
2407	assert ((loop_done = EVUNLOOP_CANCEL, 1)); /* assert for side effect */	2671	assert ((loop_done = EVBREAK_CANCEL, 1)); /* assert for side effect */
		2672
		2673	pipe_write_wanted = 0;
		2674
		2675	if (pipe_write_skipped)
		2676	{
		2677	assert (("libev: pipe_w not active, but pipe not written", ev_is_active (&pipe_w)));
		2678	ev_feed_event (EV_A_ &pipe_w, EV_CUSTOM);
		2679	}
		2680
2408		2681
2409	/* update ev_rt_now, do magic */	2682	/* update ev_rt_now, do magic */
2410	time_update (EV_A_ waittime + sleeptime);	2683	time_update (EV_A_ waittime + sleeptime);
2411	}	2684	}
2412		2685
…		…
2430	EV_INVOKE_PENDING;	2703	EV_INVOKE_PENDING;
2431	}	2704	}
2432	while (expect_true (	2705	while (expect_true (
2433	activecnt	2706	activecnt
2434	&& !loop_done	2707	&& !loop_done
2435	&& !(flags & (EVLOOP_ONESHOT \| EVLOOP_NONBLOCK))	2708	&& !(flags & (EVRUN_ONCE \| EVRUN_NOWAIT))
2436	));	2709	));
2437		2710
2438	if (loop_done == EVUNLOOP_ONE)	2711	if (loop_done == EVBREAK_ONE)
2439	loop_done = EVUNLOOP_CANCEL;	2712	loop_done = EVBREAK_CANCEL;
2440		2713
2441	#if EV_FEATURE_API	2714	#if EV_FEATURE_API
2442	--loop_depth;	2715	--loop_depth;
2443	#endif	2716	#endif
2444	}	2717	}
2445		2718
2446	void	2719	void
2447	ev_unloop (EV_P_ int how)	2720	ev_break (EV_P_ int how)
2448	{	2721	{
2449	loop_done = how;	2722	loop_done = how;
2450	}	2723	}
2451		2724
2452	void	2725	void
…		…
2702	if (w->reschedule_cb)	2975	if (w->reschedule_cb)
2703	ev_at (w) = w->reschedule_cb (w, ev_rt_now);	2976	ev_at (w) = w->reschedule_cb (w, ev_rt_now);
2704	else if (w->interval)	2977	else if (w->interval)
2705	{	2978	{
2706	assert (("libev: ev_periodic_start called with negative interval value", w->interval >= 0.));	2979	assert (("libev: ev_periodic_start called with negative interval value", w->interval >= 0.));
2707	/* this formula differs from the one in periodic_reify because we do not always round up */	2980	periodic_recalc (EV_A_ w);
2708	ev_at (w) = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval;
2709	}	2981	}
2710	else	2982	else
2711	ev_at (w) = w->offset;	2983	ev_at (w) = w->offset;
2712		2984
2713	EV_FREQUENT_CHECK;	2985	EV_FREQUENT_CHECK;
…		…
2834	sa.sa_handler = ev_sighandler;	3106	sa.sa_handler = ev_sighandler;
2835	sigfillset (&sa.sa_mask);	3107	sigfillset (&sa.sa_mask);
2836	sa.sa_flags = SA_RESTART; /* if restarting works we save one iteration */	3108	sa.sa_flags = SA_RESTART; /* if restarting works we save one iteration */
2837	sigaction (w->signum, &sa, 0);	3109	sigaction (w->signum, &sa, 0);
2838		3110
		3111	if (origflags & EVFLAG_NOSIGMASK)
		3112	{
2839	sigemptyset (&sa.sa_mask);	3113	sigemptyset (&sa.sa_mask);
2840	sigaddset (&sa.sa_mask, w->signum);	3114	sigaddset (&sa.sa_mask, w->signum);
2841	sigprocmask (SIG_UNBLOCK, &sa.sa_mask, 0);	3115	sigprocmask (SIG_UNBLOCK, &sa.sa_mask, 0);
		3116	}
2842	#endif	3117	#endif
2843	}	3118	}
2844		3119
2845	EV_FREQUENT_CHECK;	3120	EV_FREQUENT_CHECK;
2846	}	3121	}
…		…
2987	if (!pend \|\| pend == path)	3262	if (!pend \|\| pend == path)
2988	break;	3263	break;
2989		3264
2990	*pend = 0;	3265	*pend = 0;
2991	w->wd = inotify_add_watch (fs_fd, path, mask);	3266	w->wd = inotify_add_watch (fs_fd, path, mask);
2992	}	3267	}
2993	while (w->wd < 0 && (errno == ENOENT \|\| errno == EACCES));	3268	while (w->wd < 0 && (errno == ENOENT \|\| errno == EACCES));
2994	}	3269	}
2995	}	3270	}
2996		3271
2997	if (w->wd >= 0)	3272	if (w->wd >= 0)
…		…
3064	infy_wd (EV_A_ ev->wd, ev->wd, ev);	3339	infy_wd (EV_A_ ev->wd, ev->wd, ev);
3065	ofs += sizeof (struct inotify_event) + ev->len;	3340	ofs += sizeof (struct inotify_event) + ev->len;
3066	}	3341	}
3067	}	3342	}
3068		3343
3069	inline_size unsigned int
3070	ev_linux_version (void)
3071	{
3072	struct utsname buf;
3073	unsigned int v;
3074	int i;
3075	char *p = buf.release;
3076
3077	if (uname (&buf))
3078	return 0;
3079
3080	for (i = 3+1; --i; )
3081	{
3082	unsigned int c = 0;
3083
3084	for (;;)
3085	{
3086	if (p >= '0' && p <= '9')
3087	c = c * 10 + *p++ - '0';
3088	else
3089	{
3090	p += *p == '.';
3091	break;
3092	}
3093	}
3094
3095	v = (v << 8) \| c;
3096	}
3097
3098	return v;
3099	}
3100
3101	inline_size void	3344	inline_size void ecb_cold
3102	ev_check_2625 (EV_P)	3345	ev_check_2625 (EV_P)
3103	{	3346	{
3104	/* kernels < 2.6.25 are borked	3347	/* kernels < 2.6.25 are borked
3105	* http://www.ussg.indiana.edu/hypermail/linux/kernel/0711.3/1208.html	3348	* http://www.ussg.indiana.edu/hypermail/linux/kernel/0711.3/1208.html
3106	*/	3349	*/
…		…
3427		3670
3428	#if EV_EMBED_ENABLE	3671	#if EV_EMBED_ENABLE
3429	void noinline	3672	void noinline
3430	ev_embed_sweep (EV_P_ ev_embed *w)	3673	ev_embed_sweep (EV_P_ ev_embed *w)
3431	{	3674	{
3432	ev_loop (w->other, EVLOOP_NONBLOCK);	3675	ev_run (w->other, EVRUN_NOWAIT);
3433	}	3676	}
3434		3677
3435	static void	3678	static void
3436	embed_io_cb (EV_P_ ev_io *io, int revents)	3679	embed_io_cb (EV_P_ ev_io *io, int revents)
3437	{	3680	{
3438	ev_embed w = (ev_embed )(((char *)io) - offsetof (ev_embed, io));	3681	ev_embed w = (ev_embed )(((char *)io) - offsetof (ev_embed, io));
3439		3682
3440	if (ev_cb (w))	3683	if (ev_cb (w))
3441	ev_feed_event (EV_A_ (W)w, EV_EMBED);	3684	ev_feed_event (EV_A_ (W)w, EV_EMBED);
3442	else	3685	else
3443	ev_loop (w->other, EVLOOP_NONBLOCK);	3686	ev_run (w->other, EVRUN_NOWAIT);
3444	}	3687	}
3445		3688
3446	static void	3689	static void
3447	embed_prepare_cb (EV_P_ ev_prepare *prepare, int revents)	3690	embed_prepare_cb (EV_P_ ev_prepare *prepare, int revents)
3448	{	3691	{
…		…
3452	EV_P = w->other;	3695	EV_P = w->other;
3453		3696
3454	while (fdchangecnt)	3697	while (fdchangecnt)
3455	{	3698	{
3456	fd_reify (EV_A);	3699	fd_reify (EV_A);
3457	ev_loop (EV_A_ EVLOOP_NONBLOCK);	3700	ev_run (EV_A_ EVRUN_NOWAIT);
3458	}	3701	}
3459	}	3702	}
3460	}	3703	}
3461		3704
3462	static void	3705	static void
…		…
3468		3711
3469	{	3712	{
3470	EV_P = w->other;	3713	EV_P = w->other;
3471		3714
3472	ev_loop_fork (EV_A);	3715	ev_loop_fork (EV_A);
3473	ev_loop (EV_A_ EVLOOP_NONBLOCK);	3716	ev_run (EV_A_ EVRUN_NOWAIT);
3474	}	3717	}
3475		3718
3476	ev_embed_start (EV_A_ w);	3719	ev_embed_start (EV_A_ w);
3477	}	3720	}
3478		3721
…		…
3570		3813
3571	EV_FREQUENT_CHECK;	3814	EV_FREQUENT_CHECK;
3572	}	3815	}
3573	#endif	3816	#endif
3574		3817
		3818	#if EV_CLEANUP_ENABLE
		3819	void
		3820	ev_cleanup_start (EV_P_ ev_cleanup *w)
		3821	{
		3822	if (expect_false (ev_is_active (w)))
		3823	return;
		3824
		3825	EV_FREQUENT_CHECK;
		3826
		3827	ev_start (EV_A_ (W)w, ++cleanupcnt);
		3828	array_needsize (ev_cleanup *, cleanups, cleanupmax, cleanupcnt, EMPTY2);
		3829	cleanups [cleanupcnt - 1] = w;
		3830
		3831	/* cleanup watchers should never keep a refcount on the loop */
		3832	ev_unref (EV_A);
		3833	EV_FREQUENT_CHECK;
		3834	}
		3835
		3836	void
		3837	ev_cleanup_stop (EV_P_ ev_cleanup *w)
		3838	{
		3839	clear_pending (EV_A_ (W)w);
		3840	if (expect_false (!ev_is_active (w)))
		3841	return;
		3842
		3843	EV_FREQUENT_CHECK;
		3844	ev_ref (EV_A);
		3845
		3846	{
		3847	int active = ev_active (w);
		3848
		3849	cleanups [active - 1] = cleanups [--cleanupcnt];
		3850	ev_active (cleanups [active - 1]) = active;
		3851	}
		3852
		3853	ev_stop (EV_A_ (W)w);
		3854
		3855	EV_FREQUENT_CHECK;
		3856	}
		3857	#endif
		3858
3575	#if EV_ASYNC_ENABLE	3859	#if EV_ASYNC_ENABLE
3576	void	3860	void
3577	ev_async_start (EV_P_ ev_async *w)	3861	ev_async_start (EV_P_ ev_async *w)
3578	{	3862	{
3579	if (expect_false (ev_is_active (w)))	3863	if (expect_false (ev_is_active (w)))
3580	return;	3864	return;
		3865
		3866	w->sent = 0;
3581		3867
3582	evpipe_init (EV_A);	3868	evpipe_init (EV_A);
3583		3869
3584	EV_FREQUENT_CHECK;	3870	EV_FREQUENT_CHECK;
3585		3871
…		…
3688	}	3974	}
3689		3975
3690	/*****************************************************************************/	3976	/*****************************************************************************/
3691		3977
3692	#if EV_WALK_ENABLE	3978	#if EV_WALK_ENABLE
3693	void	3979	void ecb_cold
3694	ev_walk (EV_P_ int types, void (cb)(EV_P_ int type, void w))	3980	ev_walk (EV_P_ int types, void (cb)(EV_P_ int type, void w))
3695	{	3981	{
3696	int i, j;	3982	int i, j;
3697	ev_watcher_list wl, wn;	3983	ev_watcher_list wl, wn;
3698		3984
…		…
3805		4091
3806	#if EV_MULTIPLICITY	4092	#if EV_MULTIPLICITY
3807	#include "ev_wrap.h"	4093	#include "ev_wrap.h"
3808	#endif	4094	#endif
3809		4095
3810	#ifdef __cplusplus	4096	EV_CPP(})
3811	}
3812	#endif
3813		4097

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Comparing libev/ev.c (file contents): Revision 1.351 by root, Sat Oct 16 06:46:55 2010 UTC vs. Revision 1.383 by root, Wed Jul 20 00:40:14 2011 UTC

Diff Legend

Comparing libev/ev.c (file contents):
Revision 1.351 by root, Sat Oct 16 06:46:55 2010 UTC vs.
Revision 1.383 by root, Wed Jul 20 00:40:14 2011 UTC