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

Comparing libev/ev.c (file contents):
Revision 1.371 by root, Mon Feb 7 21:45:32 2011 UTC vs.
Revision 1.389 by root, Wed Aug 3 15:31:23 2011 UTC

…		…
4	* Copyright (c) 2007,2008,2009,2010,2011 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,
…		…
42	# ifdef EV_CONFIG_H	42	# ifdef EV_CONFIG_H
43	# include EV_CONFIG_H	43	# include EV_CONFIG_H
44	# else	44	# else
45	# include "config.h"	45	# include "config.h"
46	# endif	46	# endif
		47
		48	#if HAVE_FLOOR
		49	# ifndef EV_USE_FLOOR
		50	# define EV_USE_FLOOR 1
		51	# endif
		52	#endif
47		53
48	# if HAVE_CLOCK_SYSCALL	54	# if HAVE_CLOCK_SYSCALL
49	# ifndef EV_USE_CLOCK_SYSCALL	55	# ifndef EV_USE_CLOCK_SYSCALL
50	# define EV_USE_CLOCK_SYSCALL 1	56	# define EV_USE_CLOCK_SYSCALL 1
51	# ifndef EV_USE_REALTIME	57	# ifndef EV_USE_REALTIME
…		…
156	# define EV_USE_EVENTFD 0	162	# define EV_USE_EVENTFD 0
157	# endif	163	# endif
158		164
159	#endif	165	#endif
160		166
161	#include <math.h>
162	#include <stdlib.h>	167	#include <stdlib.h>
163	#include <string.h>	168	#include <string.h>
164	#include <fcntl.h>	169	#include <fcntl.h>
165	#include <stddef.h>	170	#include <stddef.h>
166		171
…		…
232	/* to make it compile regardless, just remove the above line, */	237	/* to make it compile regardless, just remove the above line, */
233	/* but consider reporting it, too! :) */	238	/* but consider reporting it, too! :) */
234	# define EV_NSIG 65	239	# define EV_NSIG 65
235	#endif	240	#endif
236		241
		242	#ifndef EV_USE_FLOOR
		243	# define EV_USE_FLOOR 0
		244	#endif
		245
237	#ifndef EV_USE_CLOCK_SYSCALL	246	#ifndef EV_USE_CLOCK_SYSCALL
238	# if __linux && __GLIBC__ >= 2	247	# if __linux && __GLIBC__ >= 2
239	# define EV_USE_CLOCK_SYSCALL EV_FEATURE_OS	248	# define EV_USE_CLOCK_SYSCALL EV_FEATURE_OS
240	# else	249	# else
241	# define EV_USE_CLOCK_SYSCALL 0	250	# define EV_USE_CLOCK_SYSCALL 0
…		…
443	#else	452	#else
444	# define EV_FREQUENT_CHECK do { } while (0)	453	# define EV_FREQUENT_CHECK do { } while (0)
445	#endif	454	#endif
446		455
447	/*	456	/*
448	* This is used to avoid floating point rounding problems.	457	* This is used to work around floating point rounding problems.
449	* It is added to ev_rt_now when scheduling periodics
450	* to ensure progress, time-wise, even when rounding
451	* errors are against us.
452	* This value is good at least till the year 4000.	458	* This value is good at least till the year 4000.
453	* Better solutions welcome.
454	*/	459	*/
455	#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 /
456		462
457	#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) */
458	#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) */
459		465
460	#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)
461	#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)
462		468
463	#if __GNUC__ >= 4	469	/* the following are taken from libecb */
464	# define expect(expr,value) __builtin_expect ((expr),(value))	470	/* ecb.h start */
465	# 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
466	#else	493	#else
467	# define expect(expr,value) (expr)	494	#define ecb_inline static
468	# define noinline
469	# if __STDC_VERSION__ < 199901L && __GNUC__ < 2
470	# define inline
471	# 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
472	#endif	508	#endif
		509	#endif
473		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. */
474	#define expect_false(expr) expect ((expr) != 0, 0)	569	#define ecb_expect_false(expr) ecb_expect (!!(expr), 0)
475	#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
476	#define inline_size static inline	577	#define inline_size ecb_inline
477		578
478	#if EV_FEATURE_CODE	579	#if EV_FEATURE_CODE
479	# define inline_speed static inline	580	# define inline_speed ecb_inline
480	#else	581	#else
481	# define inline_speed static noinline	582	# define inline_speed static noinline
482	#endif	583	#endif
483		584
484	#define NUMPRI (EV_MAXPRI - EV_MINPRI + 1)	585	#define NUMPRI (EV_MAXPRI - EV_MINPRI + 1)
…		…
523	# include "ev_win32.c"	624	# include "ev_win32.c"
524	#endif	625	#endif
525		626
526	/*****************************************************************************/	627	/*****************************************************************************/
527		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
528	#ifdef __linux	677	#ifdef __linux
529	# include <sys/utsname.h>	678	# include <sys/utsname.h>
530	#endif	679	#endif
531		680
532	static unsigned int noinline	681	static unsigned int noinline ecb_cold
533	ev_linux_version (void)	682	ev_linux_version (void)
534	{	683	{
535	#ifdef __linux	684	#ifdef __linux
536	unsigned int v = 0;	685	unsigned int v = 0;
537	struct utsname buf;	686	struct utsname buf;
…		…
566	}	715	}
567		716
568	/*****************************************************************************/	717	/*****************************************************************************/
569		718
570	#if EV_AVOID_STDIO	719	#if EV_AVOID_STDIO
571	static void noinline	720	static void noinline ecb_cold
572	ev_printerr (const char *msg)	721	ev_printerr (const char *msg)
573	{	722	{
574	write (STDERR_FILENO, msg, strlen (msg));	723	write (STDERR_FILENO, msg, strlen (msg));
575	}	724	}
576	#endif	725	#endif
577		726
578	static void (syserr_cb)(const char msg);	727	static void (syserr_cb)(const char msg);
579		728
580	void	729	void ecb_cold
581	ev_set_syserr_cb (void (cb)(const char msg))	730	ev_set_syserr_cb (void (cb)(const char msg))
582	{	731	{
583	syserr_cb = cb;	732	syserr_cb = cb;
584	}	733	}
585		734
586	static void noinline	735	static void noinline ecb_cold
587	ev_syserr (const char *msg)	736	ev_syserr (const char *msg)
588	{	737	{
589	if (!msg)	738	if (!msg)
590	msg = "(libev) system error";	739	msg = "(libev) system error";
591		740
…		…
624	#endif	773	#endif
625	}	774	}
626		775
627	static void (alloc)(void *ptr, long size) = ev_realloc_emul;	776	static void (alloc)(void *ptr, long size) = ev_realloc_emul;
628		777
629	void	778	void ecb_cold
630	ev_set_allocator (void (cb)(void *ptr, long size))	779	ev_set_allocator (void (cb)(void *ptr, long size))
631	{	780	{
632	alloc = cb;	781	alloc = cb;
633	}	782	}
634		783
…		…
816	select (0, 0, 0, 0, &tv);	965	select (0, 0, 0, 0, &tv);
817	#endif	966	#endif
818	}	967	}
819	}	968	}
820		969
821	inline_speed int
822	ev_timeout_to_ms (ev_tstamp timeout)
823	{
824	int ms = timeout * 1000. + .999999;
825
826	return expect_true (ms) ? ms : timeout < 1e-6 ? 0 : 1;
827	}
828
829	/*****************************************************************************/	970	/*****************************************************************************/
830		971
831	#define MALLOC_ROUND 4096 /* prefer to allocate in chunks of this size, must be 2*n and >> 4 longs /	972	#define MALLOC_ROUND 4096 /* prefer to allocate in chunks of this size, must be 2*n and >> 4 longs /
832		973
833	/* find a suitable new size for the given array, */	974	/* find a suitable new size for the given array, */
…		…
851	}	992	}
852		993
853	return ncur;	994	return ncur;
854	}	995	}
855		996
856	static noinline void *	997	static void * noinline ecb_cold
857	array_realloc (int elem, void base, int cur, int cnt)	998	array_realloc (int elem, void base, int cur, int cnt)
858	{	999	{
859	cur = array_nextsize (elem, cur, cnt);	1000	cur = array_nextsize (elem, cur, cnt);
860	return ev_realloc (base, elem * *cur);	1001	return ev_realloc (base, elem * *cur);
861	}	1002	}
…		…
864	memset ((void )(base), 0, sizeof ((base)) * (count))	1005	memset ((void )(base), 0, sizeof ((base)) * (count))
865		1006
866	#define array_needsize(type,base,cur,cnt,init) \	1007	#define array_needsize(type,base,cur,cnt,init) \
867	if (expect_false ((cnt) > (cur))) \	1008	if (expect_false ((cnt) > (cur))) \
868	{ \	1009	{ \
869	int ocur_ = (cur); \	1010	int ecb_unused ocur_ = (cur); \
870	(base) = (type *)array_realloc \	1011	(base) = (type *)array_realloc \
871	(sizeof (type), (base), &(cur), (cnt)); \	1012	(sizeof (type), (base), &(cur), (cnt)); \
872	init ((base) + (ocur_), (cur) - ocur_); \	1013	init ((base) + (ocur_), (cur) - ocur_); \
873	}	1014	}
874		1015
…		…
980	for (i = 0; i < fdchangecnt; ++i)	1121	for (i = 0; i < fdchangecnt; ++i)
981	{	1122	{
982	int fd = fdchanges [i];	1123	int fd = fdchanges [i];
983	ANFD *anfd = anfds + fd;	1124	ANFD *anfd = anfds + fd;
984		1125
985	if (anfd->reify & EV__IOFDSET)	1126	if (anfd->reify & EV__IOFDSET && anfd->head)
986	{	1127	{
987	SOCKET handle = EV_FD_TO_WIN32_HANDLE (fd);	1128	SOCKET handle = EV_FD_TO_WIN32_HANDLE (fd);
988		1129
989	if (handle != anfd->handle)	1130	if (handle != anfd->handle)
990	{	1131	{
…		…
1044	fdchanges [fdchangecnt - 1] = fd;	1185	fdchanges [fdchangecnt - 1] = fd;
1045	}	1186	}
1046	}	1187	}
1047		1188
1048	/* 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 */
1049	inline_speed void	1190	inline_speed void ecb_cold
1050	fd_kill (EV_P_ int fd)	1191	fd_kill (EV_P_ int fd)
1051	{	1192	{
1052	ev_io *w;	1193	ev_io *w;
1053		1194
1054	while ((w = (ev_io *)anfds [fd].head))	1195	while ((w = (ev_io *)anfds [fd].head))
…		…
1057	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);
1058	}	1199	}
1059	}	1200	}
1060		1201
1061	/* check whether the given fd is actually valid, for error recovery */	1202	/* check whether the given fd is actually valid, for error recovery */
1062	inline_size int	1203	inline_size int ecb_cold
1063	fd_valid (int fd)	1204	fd_valid (int fd)
1064	{	1205	{
1065	#ifdef _WIN32	1206	#ifdef _WIN32
1066	return EV_FD_TO_WIN32_HANDLE (fd) != -1;	1207	return EV_FD_TO_WIN32_HANDLE (fd) != -1;
1067	#else	1208	#else
1068	return fcntl (fd, F_GETFD) != -1;	1209	return fcntl (fd, F_GETFD) != -1;
1069	#endif	1210	#endif
1070	}	1211	}
1071		1212
1072	/* called on EBADF to verify fds */	1213	/* called on EBADF to verify fds */
1073	static void noinline	1214	static void noinline ecb_cold
1074	fd_ebadf (EV_P)	1215	fd_ebadf (EV_P)
1075	{	1216	{
1076	int fd;	1217	int fd;
1077		1218
1078	for (fd = 0; fd < anfdmax; ++fd)	1219	for (fd = 0; fd < anfdmax; ++fd)
…		…
1080	if (!fd_valid (fd) && errno == EBADF)	1221	if (!fd_valid (fd) && errno == EBADF)
1081	fd_kill (EV_A_ fd);	1222	fd_kill (EV_A_ fd);
1082	}	1223	}
1083		1224
1084	/* 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 */
1085	static void noinline	1226	static void noinline ecb_cold
1086	fd_enomem (EV_P)	1227	fd_enomem (EV_P)
1087	{	1228	{
1088	int fd;	1229	int fd;
1089		1230
1090	for (fd = anfdmax; fd--; )	1231	for (fd = anfdmax; fd--; )
…		…
1285		1426
1286	/*****************************************************************************/	1427	/*****************************************************************************/
1287		1428
1288	#if EV_SIGNAL_ENABLE \|\| EV_ASYNC_ENABLE	1429	#if EV_SIGNAL_ENABLE \|\| EV_ASYNC_ENABLE
1289		1430
1290	static void noinline	1431	static void noinline ecb_cold
1291	evpipe_init (EV_P)	1432	evpipe_init (EV_P)
1292	{	1433	{
1293	if (!ev_is_active (&pipe_w))	1434	if (!ev_is_active (&pipe_w))
1294	{	1435	{
1295	# if EV_USE_EVENTFD	1436	# if EV_USE_EVENTFD
…		…
1317	ev_io_start (EV_A_ &pipe_w);	1458	ev_io_start (EV_A_ &pipe_w);
1318	ev_unref (EV_A); /* watcher should not keep loop alive */	1459	ev_unref (EV_A); /* watcher should not keep loop alive */
1319	}	1460	}
1320	}	1461	}
1321		1462
1322	inline_size void	1463	inline_speed void
1323	evpipe_write (EV_P_ EV_ATOMIC_T *flag)	1464	evpipe_write (EV_P_ EV_ATOMIC_T *flag)
1324	{	1465	{
1325	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)
1326	{	1478	{
		1479	int old_errno;
		1480
		1481	pipe_write_skipped = 0; /* just an optimsiation, no fence needed */
		1482
1327	int old_errno = errno; /* save errno because write might clobber it */	1483	old_errno = errno; /* save errno because write will clobber it */
1328	char dummy;
1329
1330	*flag = 1;
1331		1484
1332	#if EV_USE_EVENTFD	1485	#if EV_USE_EVENTFD
1333	if (evfd >= 0)	1486	if (evfd >= 0)
1334	{	1487	{
1335	uint64_t counter = 1;	1488	uint64_t counter = 1;
1336	write (evfd, &counter, sizeof (uint64_t));	1489	write (evfd, &counter, sizeof (uint64_t));
1337	}	1490	}
1338	else	1491	else
1339	#endif	1492	#endif
		1493	{
1340	/* win32 people keep sending patches that change this write() to send() */	1494	/* win32 people keep sending patches that change this write() to send() */
1341	/* 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 */
1342	/* 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 */
1343	/* 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 */
1344	/* tell me. thank you. */	1498	/* tell me. thank you. */
1345	write (evpipe [1], &dummy, 1);	1499	write (evpipe [1], &(evpipe [1]), 1);
		1500	}
1346		1501
1347	errno = old_errno;	1502	errno = old_errno;
1348	}	1503	}
1349	}	1504	}
1350		1505
…		…
1353	static void	1508	static void
1354	pipecb (EV_P_ ev_io *iow, int revents)	1509	pipecb (EV_P_ ev_io *iow, int revents)
1355	{	1510	{
1356	int i;	1511	int i;
1357		1512
		1513	if (revents & EV_READ)
		1514	{
1358	#if EV_USE_EVENTFD	1515	#if EV_USE_EVENTFD
1359	if (evfd >= 0)	1516	if (evfd >= 0)
1360	{	1517	{
1361	uint64_t counter;	1518	uint64_t counter;
1362	read (evfd, &counter, sizeof (uint64_t));	1519	read (evfd, &counter, sizeof (uint64_t));
1363	}	1520	}
1364	else	1521	else
1365	#endif	1522	#endif
1366	{	1523	{
1367	char dummy;	1524	char dummy;
1368	/* 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 */
1369	read (evpipe [0], &dummy, 1);	1526	read (evpipe [0], &dummy, 1);
		1527	}
1370	}	1528	}
		1529
		1530	pipe_write_skipped = 0;
1371		1531
1372	#if EV_SIGNAL_ENABLE	1532	#if EV_SIGNAL_ENABLE
1373	if (sig_pending)	1533	if (sig_pending)
1374	{	1534	{
1375	sig_pending = 0;	1535	sig_pending = 0;
1376		1536
1377	for (i = EV_NSIG - 1; i--; )	1537	for (i = EV_NSIG - 1; i--; )
1378	if (expect_false (signals [i].pending))	1538	if (expect_false (signals [i].pending))
1379	ev_feed_signal_event (EV_A_ i + 1);	1539	ev_feed_signal_event (EV_A_ i + 1);
…		…
1404	EV_P = signals [signum - 1].loop;	1564	EV_P = signals [signum - 1].loop;
1405		1565
1406	if (!EV_A)	1566	if (!EV_A)
1407	return;	1567	return;
1408	#endif	1568	#endif
		1569
		1570	if (!ev_active (&pipe_w))
		1571	return;
1409		1572
1410	signals [signum - 1].pending = 1;	1573	signals [signum - 1].pending = 1;
1411	evpipe_write (EV_A_ &sig_pending);	1574	evpipe_write (EV_A_ &sig_pending);
1412	}	1575	}
1413		1576
…		…
1545	#endif	1708	#endif
1546	#if EV_USE_SELECT	1709	#if EV_USE_SELECT
1547	# include "ev_select.c"	1710	# include "ev_select.c"
1548	#endif	1711	#endif
1549		1712
1550	int	1713	int ecb_cold
1551	ev_version_major (void)	1714	ev_version_major (void)
1552	{	1715	{
1553	return EV_VERSION_MAJOR;	1716	return EV_VERSION_MAJOR;
1554	}	1717	}
1555		1718
1556	int	1719	int ecb_cold
1557	ev_version_minor (void)	1720	ev_version_minor (void)
1558	{	1721	{
1559	return EV_VERSION_MINOR;	1722	return EV_VERSION_MINOR;
1560	}	1723	}
1561		1724
1562	/* 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 */
1563	int inline_size	1726	int inline_size ecb_cold
1564	enable_secure (void)	1727	enable_secure (void)
1565	{	1728	{
1566	#ifdef _WIN32	1729	#ifdef _WIN32
1567	return 0;	1730	return 0;
1568	#else	1731	#else
1569	return getuid () != geteuid ()	1732	return getuid () != geteuid ()
1570	\|\| getgid () != getegid ();	1733	\|\| getgid () != getegid ();
1571	#endif	1734	#endif
1572	}	1735	}
1573		1736
1574	unsigned int	1737	unsigned int ecb_cold
1575	ev_supported_backends (void)	1738	ev_supported_backends (void)
1576	{	1739	{
1577	unsigned int flags = 0;	1740	unsigned int flags = 0;
1578		1741
1579	if (EV_USE_PORT ) flags \|= EVBACKEND_PORT;	1742	if (EV_USE_PORT ) flags \|= EVBACKEND_PORT;
…		…
1583	if (EV_USE_SELECT) flags \|= EVBACKEND_SELECT;	1746	if (EV_USE_SELECT) flags \|= EVBACKEND_SELECT;
1584		1747
1585	return flags;	1748	return flags;
1586	}	1749	}
1587		1750
1588	unsigned int	1751	unsigned int ecb_cold
1589	ev_recommended_backends (void)	1752	ev_recommended_backends (void)
1590	{	1753	{
1591	unsigned int flags = ev_supported_backends ();	1754	unsigned int flags = ev_supported_backends ();
1592		1755
1593	#ifndef __NetBSD__	1756	#ifndef __NetBSD__
…		…
1605	#endif	1768	#endif
1606		1769
1607	return flags;	1770	return flags;
1608	}	1771	}
1609		1772
1610	unsigned int	1773	unsigned int ecb_cold
1611	ev_embeddable_backends (void)	1774	ev_embeddable_backends (void)
1612	{	1775	{
1613	int flags = EVBACKEND_EPOLL \| EVBACKEND_KQUEUE \| EVBACKEND_PORT;	1776	int flags = EVBACKEND_EPOLL \| EVBACKEND_KQUEUE \| EVBACKEND_PORT;
1614		1777
1615	/* 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 */
…		…
1660	ev_userdata (EV_P)	1823	ev_userdata (EV_P)
1661	{	1824	{
1662	return userdata;	1825	return userdata;
1663	}	1826	}
1664		1827
		1828	void
1665	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))
1666	{	1830	{
1667	invoke_cb = invoke_pending_cb;	1831	invoke_cb = invoke_pending_cb;
1668	}	1832	}
1669		1833
		1834	void
1670	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))
1671	{	1836	{
1672	release_cb = release;	1837	release_cb = release;
1673	acquire_cb = acquire;	1838	acquire_cb = acquire;
1674	}	1839	}
1675	#endif	1840	#endif
1676		1841
1677	/* initialise a loop structure, must be zero-initialised */	1842	/* initialise a loop structure, must be zero-initialised */
1678	static void noinline	1843	static void noinline ecb_cold
1679	loop_init (EV_P_ unsigned int flags)	1844	loop_init (EV_P_ unsigned int flags)
1680	{	1845	{
1681	if (!backend)	1846	if (!backend)
1682	{	1847	{
1683	origflags = flags;	1848	origflags = flags;
…		…
1711	if (!(flags & EVFLAG_NOENV)	1876	if (!(flags & EVFLAG_NOENV)
1712	&& !enable_secure ()	1877	&& !enable_secure ()
1713	&& getenv ("LIBEV_FLAGS"))	1878	&& getenv ("LIBEV_FLAGS"))
1714	flags = atoi (getenv ("LIBEV_FLAGS"));	1879	flags = atoi (getenv ("LIBEV_FLAGS"));
1715		1880
1716	ev_rt_now = ev_time ();	1881	ev_rt_now = ev_time ();
1717	mn_now = get_clock ();	1882	mn_now = get_clock ();
1718	now_floor = mn_now;	1883	now_floor = mn_now;
1719	rtmn_diff = ev_rt_now - mn_now;	1884	rtmn_diff = ev_rt_now - mn_now;
1720	#if EV_FEATURE_API	1885	#if EV_FEATURE_API
1721	invoke_cb = ev_invoke_pending;	1886	invoke_cb = ev_invoke_pending;
1722	#endif	1887	#endif
1723		1888
1724	io_blocktime = 0.;	1889	io_blocktime = 0.;
1725	timeout_blocktime = 0.;	1890	timeout_blocktime = 0.;
1726	backend = 0;	1891	backend = 0;
1727	backend_fd = -1;	1892	backend_fd = -1;
1728	sig_pending = 0;	1893	sig_pending = 0;
1729	#if EV_ASYNC_ENABLE	1894	#if EV_ASYNC_ENABLE
1730	async_pending = 0;	1895	async_pending = 0;
1731	#endif	1896	#endif
		1897	pipe_write_skipped = 0;
		1898	pipe_write_wanted = 0;
1732	#if EV_USE_INOTIFY	1899	#if EV_USE_INOTIFY
1733	fs_fd = flags & EVFLAG_NOINOTIFY ? -1 : -2;	1900	fs_fd = flags & EVFLAG_NOINOTIFY ? -1 : -2;
1734	#endif	1901	#endif
1735	#if EV_USE_SIGNALFD	1902	#if EV_USE_SIGNALFD
1736	sigfd = flags & EVFLAG_SIGNALFD ? -2 : -1;	1903	sigfd = flags & EVFLAG_SIGNALFD ? -2 : -1;
1737	#endif	1904	#endif
1738		1905
1739	if (!(flags & EVBACKEND_MASK))	1906	if (!(flags & EVBACKEND_MASK))
1740	flags \|= ev_recommended_backends ();	1907	flags \|= ev_recommended_backends ();
1741		1908
…		…
1766	#endif	1933	#endif
1767	}	1934	}
1768	}	1935	}
1769		1936
1770	/* free up a loop structure */	1937	/* free up a loop structure */
1771	void	1938	void ecb_cold
1772	ev_loop_destroy (EV_P)	1939	ev_loop_destroy (EV_P)
1773	{	1940	{
1774	int i;	1941	int i;
1775		1942
1776	#if EV_MULTIPLICITY	1943	#if EV_MULTIPLICITY
…		…
1906	infy_fork (EV_A);	2073	infy_fork (EV_A);
1907	#endif	2074	#endif
1908		2075
1909	if (ev_is_active (&pipe_w))	2076	if (ev_is_active (&pipe_w))
1910	{	2077	{
1911	/* this "locks" the handlers against writing to the pipe */	2078	/* pipe_write_wanted must be false now, so modifying fd vars should be safe */
1912	/* while we modify the fd vars */
1913	sig_pending = 1;
1914	#if EV_ASYNC_ENABLE
1915	async_pending = 1;
1916	#endif
1917		2079
1918	ev_ref (EV_A);	2080	ev_ref (EV_A);
1919	ev_io_stop (EV_A_ &pipe_w);	2081	ev_io_stop (EV_A_ &pipe_w);
1920		2082
1921	#if EV_USE_EVENTFD	2083	#if EV_USE_EVENTFD
…		…
1939	postfork = 0;	2101	postfork = 0;
1940	}	2102	}
1941		2103
1942	#if EV_MULTIPLICITY	2104	#if EV_MULTIPLICITY
1943		2105
1944	struct ev_loop *	2106	struct ev_loop * ecb_cold
1945	ev_loop_new (unsigned int flags)	2107	ev_loop_new (unsigned int flags)
1946	{	2108	{
1947	EV_P = (struct ev_loop *)ev_malloc (sizeof (struct ev_loop));	2109	EV_P = (struct ev_loop *)ev_malloc (sizeof (struct ev_loop));
1948		2110
1949	memset (EV_A, 0, sizeof (struct ev_loop));	2111	memset (EV_A, 0, sizeof (struct ev_loop));
…		…
1957	}	2119	}
1958		2120
1959	#endif /* multiplicity */	2121	#endif /* multiplicity */
1960		2122
1961	#if EV_VERIFY	2123	#if EV_VERIFY
1962	static void noinline	2124	static void noinline ecb_cold
1963	verify_watcher (EV_P_ W w)	2125	verify_watcher (EV_P_ W w)
1964	{	2126	{
1965	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));
1966		2128
1967	if (w->pending)	2129	if (w->pending)
1968	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));
1969	}	2131	}
1970		2132
1971	static void noinline	2133	static void noinline ecb_cold
1972	verify_heap (EV_P_ ANHE *heap, int N)	2134	verify_heap (EV_P_ ANHE *heap, int N)
1973	{	2135	{
1974	int i;	2136	int i;
1975		2137
1976	for (i = HEAP0; i < N + HEAP0; ++i)	2138	for (i = HEAP0; i < N + HEAP0; ++i)
…		…
1981		2143
1982	verify_watcher (EV_A_ (W)ANHE_w (heap [i]));	2144	verify_watcher (EV_A_ (W)ANHE_w (heap [i]));
1983	}	2145	}
1984	}	2146	}
1985		2147
1986	static void noinline	2148	static void noinline ecb_cold
1987	array_verify (EV_P_ W *ws, int cnt)	2149	array_verify (EV_P_ W *ws, int cnt)
1988	{	2150	{
1989	while (cnt--)	2151	while (cnt--)
1990	{	2152	{
1991	assert (("libev: active index mismatch", ev_active (ws [cnt]) == cnt + 1));	2153	assert (("libev: active index mismatch", ev_active (ws [cnt]) == cnt + 1));
…		…
1993	}	2155	}
1994	}	2156	}
1995	#endif	2157	#endif
1996		2158
1997	#if EV_FEATURE_API	2159	#if EV_FEATURE_API
1998	void	2160	void ecb_cold
1999	ev_verify (EV_P)	2161	ev_verify (EV_P)
2000	{	2162	{
2001	#if EV_VERIFY	2163	#if EV_VERIFY
2002	int i;	2164	int i;
2003	WL w;	2165	WL w;
…		…
2069	#endif	2231	#endif
2070	}	2232	}
2071	#endif	2233	#endif
2072		2234
2073	#if EV_MULTIPLICITY	2235	#if EV_MULTIPLICITY
2074	struct ev_loop *	2236	struct ev_loop * ecb_cold
2075	#else	2237	#else
2076	int	2238	int
2077	#endif	2239	#endif
2078	ev_default_loop (unsigned int flags)	2240	ev_default_loop (unsigned int flags)
2079	{	2241	{
…		…
2208	}	2370	}
2209	}	2371	}
2210		2372
2211	#if EV_PERIODIC_ENABLE	2373	#if EV_PERIODIC_ENABLE
2212		2374
2213	inline_speed void	2375	static void noinline
2214	periodic_recalc (EV_P_ ev_periodic *w)	2376	periodic_recalc (EV_P_ ev_periodic *w)
2215	{	2377	{
2216	/* TODO: use slow but potentially more correct incremental algo, */	2378	ev_tstamp interval = w->interval > MIN_INTERVAL ? w->interval : MIN_INTERVAL;
2217	/* also do not rely on ceil */	2379	ev_tstamp at = w->offset + interval * ev_floor ((ev_rt_now - w->offset) / interval);
2218	ev_at (w) = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->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;
2219	}	2397	}
2220		2398
2221	/* make periodics pending */	2399	/* make periodics pending */
2222	inline_size void	2400	inline_size void
2223	periodics_reify (EV_P)	2401	periodics_reify (EV_P)
…		…
2245	downheap (periodics, periodiccnt, HEAP0);	2423	downheap (periodics, periodiccnt, HEAP0);
2246	}	2424	}
2247	else if (w->interval)	2425	else if (w->interval)
2248	{	2426	{
2249	periodic_recalc (EV_A_ w);	2427	periodic_recalc (EV_A_ w);
2250
2251	/* if next trigger time is not sufficiently in the future, put it there */
2252	/* this might happen because of floating point inexactness */
2253	if (ev_at (w) - ev_rt_now < TIME_EPSILON)
2254	{
2255	ev_at (w) += w->interval;
2256
2257	/* if interval is unreasonably low we might still have a time in the past */
2258	/* so correct this. this will make the periodic very inexact, but the user */
2259	/* has effectively asked to get triggered more often than possible */
2260	if (ev_at (w) < ev_rt_now)
2261	ev_at (w) = ev_rt_now;
2262	}
2263
2264	ANHE_at_cache (periodics [HEAP0]);	2428	ANHE_at_cache (periodics [HEAP0]);
2265	downheap (periodics, periodiccnt, HEAP0);	2429	downheap (periodics, periodiccnt, HEAP0);
2266	}	2430	}
2267	else	2431	else
2268	ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */	2432	ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */
…		…
2276	}	2440	}
2277	}	2441	}
2278		2442
2279	/* simply recalculate all periodics */	2443	/* simply recalculate all periodics */
2280	/* 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? */
2281	static void noinline	2445	static void noinline ecb_cold
2282	periodics_reschedule (EV_P)	2446	periodics_reschedule (EV_P)
2283	{	2447	{
2284	int i;	2448	int i;
2285		2449
2286	/* adjust periodics after time jump */	2450	/* adjust periodics after time jump */
…		…
2299	reheap (periodics, periodiccnt);	2463	reheap (periodics, periodiccnt);
2300	}	2464	}
2301	#endif	2465	#endif
2302		2466
2303	/* adjust all timers by a given offset */	2467	/* adjust all timers by a given offset */
2304	static void noinline	2468	static void noinline ecb_cold
2305	timers_reschedule (EV_P_ ev_tstamp adjust)	2469	timers_reschedule (EV_P_ ev_tstamp adjust)
2306	{	2470	{
2307	int i;	2471	int i;
2308		2472
2309	for (i = 0; i < timercnt; ++i)	2473	for (i = 0; i < timercnt; ++i)
…		…
2346	* 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
2347	* in the unlikely event of having been preempted here.	2511	* in the unlikely event of having been preempted here.
2348	*/	2512	*/
2349	for (i = 4; --i; )	2513	for (i = 4; --i; )
2350	{	2514	{
		2515	ev_tstamp diff;
2351	rtmn_diff = ev_rt_now - mn_now;	2516	rtmn_diff = ev_rt_now - mn_now;
2352		2517
		2518	diff = odiff - rtmn_diff;
		2519
2353	if (expect_true (fabs (odiff - rtmn_diff) < MIN_TIMEJUMP))	2520	if (expect_true ((diff < 0. ? -diff : diff) < MIN_TIMEJUMP))
2354	return; /* all is well */	2521	return; /* all is well */
2355		2522
2356	ev_rt_now = ev_time ();	2523	ev_rt_now = ev_time ();
2357	mn_now = get_clock ();	2524	mn_now = get_clock ();
2358	now_floor = mn_now;	2525	now_floor = mn_now;
…		…
2448	ev_tstamp prev_mn_now = mn_now;	2615	ev_tstamp prev_mn_now = mn_now;
2449		2616
2450	/* update time to cancel out callback processing overhead */	2617	/* update time to cancel out callback processing overhead */
2451	time_update (EV_A_ 1e100);	2618	time_update (EV_A_ 1e100);
2452		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
2453	if (expect_true (!(flags & EVRUN_NOWAIT \|\| idleall \|\| !activecnt)))	2625	if (expect_true (!(flags & EVRUN_NOWAIT \|\| idleall \|\| !activecnt \|\| pipe_write_skipped)))
2454	{	2626	{
2455	waittime = MAX_BLOCKTIME;	2627	waittime = MAX_BLOCKTIME;
2456		2628
2457	if (timercnt)	2629	if (timercnt)
2458	{	2630	{
2459	ev_tstamp to = ANHE_at (timers [HEAP0]) - mn_now + backend_fudge;	2631	ev_tstamp to = ANHE_at (timers [HEAP0]) - mn_now;
2460	if (waittime > to) waittime = to;	2632	if (waittime > to) waittime = to;
2461	}	2633	}
2462		2634
2463	#if EV_PERIODIC_ENABLE	2635	#if EV_PERIODIC_ENABLE
2464	if (periodiccnt)	2636	if (periodiccnt)
2465	{	2637	{
2466	ev_tstamp to = ANHE_at (periodics [HEAP0]) - ev_rt_now + backend_fudge;	2638	ev_tstamp to = ANHE_at (periodics [HEAP0]) - ev_rt_now;
2467	if (waittime > to) waittime = to;	2639	if (waittime > to) waittime = to;
2468	}	2640	}
2469	#endif	2641	#endif
2470		2642
2471	/* don't let timeouts decrease the waittime below timeout_blocktime */	2643	/* don't let timeouts decrease the waittime below timeout_blocktime */
2472	if (expect_false (waittime < timeout_blocktime))	2644	if (expect_false (waittime < timeout_blocktime))
2473	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;
2474		2651
2475	/* extra check because io_blocktime is commonly 0 */	2652	/* extra check because io_blocktime is commonly 0 */
2476	if (expect_false (io_blocktime))	2653	if (expect_false (io_blocktime))
2477	{	2654	{
2478	sleeptime = io_blocktime - (mn_now - prev_mn_now);	2655	sleeptime = io_blocktime - (mn_now - prev_mn_now);
2479		2656
2480	if (sleeptime > waittime - backend_fudge)	2657	if (sleeptime > waittime - backend_mintime)
2481	sleeptime = waittime - backend_fudge;	2658	sleeptime = waittime - backend_mintime;
2482		2659
2483	if (expect_true (sleeptime > 0.))	2660	if (expect_true (sleeptime > 0.))
2484	{	2661	{
2485	ev_sleep (sleeptime);	2662	ev_sleep (sleeptime);
2486	waittime -= sleeptime;	2663	waittime -= sleeptime;
…		…
2492	++loop_count;	2669	++loop_count;
2493	#endif	2670	#endif
2494	assert ((loop_done = EVBREAK_RECURSE, 1)); /* assert for side effect */	2671	assert ((loop_done = EVBREAK_RECURSE, 1)); /* assert for side effect */
2495	backend_poll (EV_A_ waittime);	2672	backend_poll (EV_A_ waittime);
2496	assert ((loop_done = EVBREAK_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
2497		2683
2498	/* update ev_rt_now, do magic */	2684	/* update ev_rt_now, do magic */
2499	time_update (EV_A_ waittime + sleeptime);	2685	time_update (EV_A_ waittime + sleeptime);
2500	}	2686	}
2501		2687
…		…
3078	if (!pend \|\| pend == path)	3264	if (!pend \|\| pend == path)
3079	break;	3265	break;
3080		3266
3081	*pend = 0;	3267	*pend = 0;
3082	w->wd = inotify_add_watch (fs_fd, path, mask);	3268	w->wd = inotify_add_watch (fs_fd, path, mask);
3083	}	3269	}
3084	while (w->wd < 0 && (errno == ENOENT \|\| errno == EACCES));	3270	while (w->wd < 0 && (errno == ENOENT \|\| errno == EACCES));
3085	}	3271	}
3086	}	3272	}
3087		3273
3088	if (w->wd >= 0)	3274	if (w->wd >= 0)
…		…
3155	infy_wd (EV_A_ ev->wd, ev->wd, ev);	3341	infy_wd (EV_A_ ev->wd, ev->wd, ev);
3156	ofs += sizeof (struct inotify_event) + ev->len;	3342	ofs += sizeof (struct inotify_event) + ev->len;
3157	}	3343	}
3158	}	3344	}
3159		3345
3160	inline_size void	3346	inline_size void ecb_cold
3161	ev_check_2625 (EV_P)	3347	ev_check_2625 (EV_P)
3162	{	3348	{
3163	/* kernels < 2.6.25 are borked	3349	/* kernels < 2.6.25 are borked
3164	* 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
3165	*/	3351	*/
…		…
3790	}	3976	}
3791		3977
3792	/*****************************************************************************/	3978	/*****************************************************************************/
3793		3979
3794	#if EV_WALK_ENABLE	3980	#if EV_WALK_ENABLE
3795	void	3981	void ecb_cold
3796	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))
3797	{	3983	{
3798	int i, j;	3984	int i, j;
3799	ev_watcher_list wl, wn;	3985	ev_watcher_list wl, wn;
3800		3986

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Comparing libev/ev.c (file contents): Revision 1.371 by root, Mon Feb 7 21:45:32 2011 UTC vs. Revision 1.389 by root, Wed Aug 3 15:31:23 2011 UTC

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Comparing libev/ev.c (file contents):
Revision 1.371 by root, Mon Feb 7 21:45:32 2011 UTC vs.
Revision 1.389 by root, Wed Aug 3 15:31:23 2011 UTC