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Comparing libev/ev.c (file contents):
Revision 1.190 by root, Fri Dec 21 01:26:04 2007 UTC vs.
Revision 1.275 by root, Fri Dec 12 20:35:21 2008 UTC

1	/*	1	/*
2	* libev event processing core, watcher management	2	* libev event processing core, watcher management
3	*	3	*
4	* Copyright (c) 2007 Marc Alexander Lehmann <libev@schmorp.de>	4	* Copyright (c) 2007,2008 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	7	* Redistribution and use in source and binary forms, with or without modifica-
8	* modification, are permitted provided that the following conditions are	8	* tion, are permitted provided that the following conditions are met:
9	* met:	9	*
		10	* 1. Redistributions of source code must retain the above copyright notice,
		11	* this list of conditions and the following disclaimer.
		12	*
		13	* 2. Redistributions in binary form must reproduce the above copyright
		14	* notice, this list of conditions and the following disclaimer in the
		15	* documentation and/or other materials provided with the distribution.
		16	*
		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-
		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-
		21	* CIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
		22	* PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS;
		23	* OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
		24	* WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTH-
		25	* ERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
		26	* OF THE POSSIBILITY OF SUCH DAMAGE.
10	*	27	*
11	* * Redistributions of source code must retain the above copyright	28	* Alternatively, the contents of this file may be used under the terms of
12	* notice, this list of conditions and the following disclaimer.	29	* the GNU General Public License ("GPL") version 2 or any later version,
13	*	30	* in which case the provisions of the GPL are applicable instead of
14	* * Redistributions in binary form must reproduce the above	31	* the above. If you wish to allow the use of your version of this file
15	* copyright notice, this list of conditions and the following	32	* only under the terms of the GPL and not to allow others to use your
16	* disclaimer in the documentation and/or other materials provided	33	* version of this file under the BSD license, indicate your decision
17	* with the distribution.	34	* by deleting the provisions above and replace them with the notice
18	*	35	* and other provisions required by the GPL. If you do not delete the
19	* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS	36	* provisions above, a recipient may use your version of this file under
20	* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT	37	* either the BSD or the GPL.
21	* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
22	* A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
23	* OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
24	* SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
25	* LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
26	* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
27	* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
28	* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
29	* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
30	*/	38	*/
31		39
32	#ifdef __cplusplus	40	#ifdef __cplusplus
33	extern "C" {	41	extern "C" {
34	#endif	42	#endif
35		43
		44	/* this big block deduces configuration from config.h */
36	#ifndef EV_STANDALONE	45	#ifndef EV_STANDALONE
37	# ifdef EV_CONFIG_H	46	# ifdef EV_CONFIG_H
38	# include EV_CONFIG_H	47	# include EV_CONFIG_H
39	# else	48	# else
40	# include "config.h"	49	# include "config.h"
		50	# endif
		51
		52	# if HAVE_CLOCK_SYSCALL
		53	# ifndef EV_USE_CLOCK_SYSCALL
		54	# define EV_USE_CLOCK_SYSCALL 1
		55	# ifndef EV_USE_REALTIME
		56	# define EV_USE_REALTIME 0
		57	# endif
		58	# ifndef EV_USE_MONOTONIC
		59	# define EV_USE_MONOTONIC 1
		60	# endif
		61	# endif
41	# endif	62	# endif
42		63
43	# if HAVE_CLOCK_GETTIME	64	# if HAVE_CLOCK_GETTIME
44	# ifndef EV_USE_MONOTONIC	65	# ifndef EV_USE_MONOTONIC
45	# define EV_USE_MONOTONIC 1	66	# define EV_USE_MONOTONIC 1
…		…
51	# ifndef EV_USE_MONOTONIC	72	# ifndef EV_USE_MONOTONIC
52	# define EV_USE_MONOTONIC 0	73	# define EV_USE_MONOTONIC 0
53	# endif	74	# endif
54	# ifndef EV_USE_REALTIME	75	# ifndef EV_USE_REALTIME
55	# define EV_USE_REALTIME 0	76	# define EV_USE_REALTIME 0
		77	# endif
		78	# endif
		79
		80	# ifndef EV_USE_NANOSLEEP
		81	# if HAVE_NANOSLEEP
		82	# define EV_USE_NANOSLEEP 1
		83	# else
		84	# define EV_USE_NANOSLEEP 0
56	# endif	85	# endif
57	# endif	86	# endif
58		87
59	# ifndef EV_USE_SELECT	88	# ifndef EV_USE_SELECT
60	# if HAVE_SELECT && HAVE_SYS_SELECT_H	89	# if HAVE_SELECT && HAVE_SYS_SELECT_H
…		…
102	# else	131	# else
103	# define EV_USE_INOTIFY 0	132	# define EV_USE_INOTIFY 0
104	# endif	133	# endif
105	# endif	134	# endif
106		135
		136	# ifndef EV_USE_EVENTFD
		137	# if HAVE_EVENTFD
		138	# define EV_USE_EVENTFD 1
		139	# else
		140	# define EV_USE_EVENTFD 0
		141	# endif
		142	# endif
		143
107	#endif	144	#endif
108		145
109	#include <math.h>	146	#include <math.h>
110	#include <stdlib.h>	147	#include <stdlib.h>
111	#include <fcntl.h>	148	#include <fcntl.h>
…		…
129	#ifndef _WIN32	166	#ifndef _WIN32
130	# include <sys/time.h>	167	# include <sys/time.h>
131	# include <sys/wait.h>	168	# include <sys/wait.h>
132	# include <unistd.h>	169	# include <unistd.h>
133	#else	170	#else
		171	# include <io.h>
134	# define WIN32_LEAN_AND_MEAN	172	# define WIN32_LEAN_AND_MEAN
135	# include <windows.h>	173	# include <windows.h>
136	# ifndef EV_SELECT_IS_WINSOCKET	174	# ifndef EV_SELECT_IS_WINSOCKET
137	# define EV_SELECT_IS_WINSOCKET 1	175	# define EV_SELECT_IS_WINSOCKET 1
138	# endif	176	# endif
139	#endif	177	#endif
140		178
141	/**/	179	/* this block tries to deduce configuration from header-defined symbols and defaults */
		180
		181	#ifndef EV_USE_CLOCK_SYSCALL
		182	# if __linux && __GLIBC__ >= 2
		183	# define EV_USE_CLOCK_SYSCALL 1
		184	# else
		185	# define EV_USE_CLOCK_SYSCALL 0
		186	# endif
		187	#endif
142		188
143	#ifndef EV_USE_MONOTONIC	189	#ifndef EV_USE_MONOTONIC
		190	# if defined (_POSIX_MONOTONIC_CLOCK) && _POSIX_MONOTONIC_CLOCK >= 0
		191	# define EV_USE_MONOTONIC 1
		192	# else
144	# define EV_USE_MONOTONIC 0	193	# define EV_USE_MONOTONIC 0
		194	# endif
145	#endif	195	#endif
146		196
147	#ifndef EV_USE_REALTIME	197	#ifndef EV_USE_REALTIME
148	# define EV_USE_REALTIME 0	198	# define EV_USE_REALTIME 0
		199	#endif
		200
		201	#ifndef EV_USE_NANOSLEEP
		202	# if _POSIX_C_SOURCE >= 199309L
		203	# define EV_USE_NANOSLEEP 1
		204	# else
		205	# define EV_USE_NANOSLEEP 0
		206	# endif
149	#endif	207	#endif
150		208
151	#ifndef EV_USE_SELECT	209	#ifndef EV_USE_SELECT
152	# define EV_USE_SELECT 1	210	# define EV_USE_SELECT 1
153	#endif	211	#endif
…		…
159	# define EV_USE_POLL 1	217	# define EV_USE_POLL 1
160	# endif	218	# endif
161	#endif	219	#endif
162		220
163	#ifndef EV_USE_EPOLL	221	#ifndef EV_USE_EPOLL
		222	# if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 4))
		223	# define EV_USE_EPOLL 1
		224	# else
164	# define EV_USE_EPOLL 0	225	# define EV_USE_EPOLL 0
		226	# endif
165	#endif	227	#endif
166		228
167	#ifndef EV_USE_KQUEUE	229	#ifndef EV_USE_KQUEUE
168	# define EV_USE_KQUEUE 0	230	# define EV_USE_KQUEUE 0
169	#endif	231	#endif
…		…
171	#ifndef EV_USE_PORT	233	#ifndef EV_USE_PORT
172	# define EV_USE_PORT 0	234	# define EV_USE_PORT 0
173	#endif	235	#endif
174		236
175	#ifndef EV_USE_INOTIFY	237	#ifndef EV_USE_INOTIFY
		238	# if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 4))
		239	# define EV_USE_INOTIFY 1
		240	# else
176	# define EV_USE_INOTIFY 0	241	# define EV_USE_INOTIFY 0
		242	# endif
177	#endif	243	#endif
178		244
179	#ifndef EV_PID_HASHSIZE	245	#ifndef EV_PID_HASHSIZE
180	# if EV_MINIMAL	246	# if EV_MINIMAL
181	# define EV_PID_HASHSIZE 1	247	# define EV_PID_HASHSIZE 1
…		…
190	# else	256	# else
191	# define EV_INOTIFY_HASHSIZE 16	257	# define EV_INOTIFY_HASHSIZE 16
192	# endif	258	# endif
193	#endif	259	#endif
194		260
195	/**/	261	#ifndef EV_USE_EVENTFD
		262	# if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 7))
		263	# define EV_USE_EVENTFD 1
		264	# else
		265	# define EV_USE_EVENTFD 0
		266	# endif
		267	#endif
		268
		269	#if 0 /* debugging */
		270	# define EV_VERIFY 3
		271	# define EV_USE_4HEAP 1
		272	# define EV_HEAP_CACHE_AT 1
		273	#endif
		274
		275	#ifndef EV_VERIFY
		276	# define EV_VERIFY !EV_MINIMAL
		277	#endif
		278
		279	#ifndef EV_USE_4HEAP
		280	# define EV_USE_4HEAP !EV_MINIMAL
		281	#endif
		282
		283	#ifndef EV_HEAP_CACHE_AT
		284	# define EV_HEAP_CACHE_AT !EV_MINIMAL
		285	#endif
		286
		287	/* this block fixes any misconfiguration where we know we run into trouble otherwise */
196		288
197	#ifndef CLOCK_MONOTONIC	289	#ifndef CLOCK_MONOTONIC
198	# undef EV_USE_MONOTONIC	290	# undef EV_USE_MONOTONIC
199	# define EV_USE_MONOTONIC 0	291	# define EV_USE_MONOTONIC 0
200	#endif	292	#endif
…		…
207	#if !EV_STAT_ENABLE	299	#if !EV_STAT_ENABLE
208	# undef EV_USE_INOTIFY	300	# undef EV_USE_INOTIFY
209	# define EV_USE_INOTIFY 0	301	# define EV_USE_INOTIFY 0
210	#endif	302	#endif
211		303
		304	#if !EV_USE_NANOSLEEP
		305	# ifndef _WIN32
		306	# include <sys/select.h>
		307	# endif
		308	#endif
		309
212	#if EV_USE_INOTIFY	310	#if EV_USE_INOTIFY
		311	# include <sys/utsname.h>
		312	# include <sys/statfs.h>
213	# include <sys/inotify.h>	313	# include <sys/inotify.h>
		314	/* some very old inotify.h headers don't have IN_DONT_FOLLOW */
		315	# ifndef IN_DONT_FOLLOW
		316	# undef EV_USE_INOTIFY
		317	# define EV_USE_INOTIFY 0
		318	# endif
214	#endif	319	#endif
215		320
216	#if EV_SELECT_IS_WINSOCKET	321	#if EV_SELECT_IS_WINSOCKET
217	# include <winsock.h>	322	# include <winsock.h>
218	#endif	323	#endif
219		324
		325	/* on linux, we can use a (slow) syscall to avoid a dependency on pthread, */
		326	/* which makes programs even slower. might work on other unices, too. */
		327	#if EV_USE_CLOCK_SYSCALL
		328	# include <syscall.h>
		329	# define clock_gettime(id, ts) syscall (SYS_clock_gettime, (id), (ts))
		330	# undef EV_USE_MONOTONIC
		331	# define EV_USE_MONOTONIC 1
		332	#endif
		333
		334	#if EV_USE_EVENTFD
		335	/* our minimum requirement is glibc 2.7 which has the stub, but not the header */
		336	# include <stdint.h>
		337	# ifdef __cplusplus
		338	extern "C" {
		339	# endif
		340	int eventfd (unsigned int initval, int flags);
		341	# ifdef __cplusplus
		342	}
		343	# endif
		344	#endif
		345
220	/**/	346	/**/
		347
		348	#if EV_VERIFY >= 3
		349	# define EV_FREQUENT_CHECK ev_loop_verify (EV_A)
		350	#else
		351	# define EV_FREQUENT_CHECK do { } while (0)
		352	#endif
221		353
222	/*	354	/*
223	* This is used to avoid floating point rounding problems.	355	* This is used to avoid floating point rounding problems.
224	* It is added to ev_rt_now when scheduling periodics	356	* It is added to ev_rt_now when scheduling periodics
225	* to ensure progress, time-wise, even when rounding	357	* to ensure progress, time-wise, even when rounding
…		…
237	# define expect(expr,value) __builtin_expect ((expr),(value))	369	# define expect(expr,value) __builtin_expect ((expr),(value))
238	# define noinline __attribute__ ((noinline))	370	# define noinline __attribute__ ((noinline))
239	#else	371	#else
240	# define expect(expr,value) (expr)	372	# define expect(expr,value) (expr)
241	# define noinline	373	# define noinline
242	# if __STDC_VERSION__ < 199901L	374	# if __STDC_VERSION__ < 199901L && __GNUC__ < 2
243	# define inline	375	# define inline
244	# endif	376	# endif
245	#endif	377	#endif
246		378
247	#define expect_false(expr) expect ((expr) != 0, 0)	379	#define expect_false(expr) expect ((expr) != 0, 0)
…		…
262		394
263	typedef ev_watcher *W;	395	typedef ev_watcher *W;
264	typedef ev_watcher_list *WL;	396	typedef ev_watcher_list *WL;
265	typedef ev_watcher_time *WT;	397	typedef ev_watcher_time *WT;
266		398
		399	#define ev_active(w) ((W)(w))->active
		400	#define ev_at(w) ((WT)(w))->at
		401
		402	#if EV_USE_MONOTONIC
		403	/* sig_atomic_t is used to avoid per-thread variables or locking but still */
		404	/* giving it a reasonably high chance of working on typical architetcures */
267	static int have_monotonic; /* did clock_gettime (CLOCK_MONOTONIC) work? */	405	static EV_ATOMIC_T have_monotonic; /* did clock_gettime (CLOCK_MONOTONIC) work? */
		406	#endif
268		407
269	#ifdef _WIN32	408	#ifdef _WIN32
270	# include "ev_win32.c"	409	# include "ev_win32.c"
271	#endif	410	#endif
272		411
…		…
279	{	418	{
280	syserr_cb = cb;	419	syserr_cb = cb;
281	}	420	}
282		421
283	static void noinline	422	static void noinline
284	syserr (const char *msg)	423	ev_syserr (const char *msg)
285	{	424	{
286	if (!msg)	425	if (!msg)
287	msg = "(libev) system error";	426	msg = "(libev) system error";
288		427
289	if (syserr_cb)	428	if (syserr_cb)
…		…
293	perror (msg);	432	perror (msg);
294	abort ();	433	abort ();
295	}	434	}
296	}	435	}
297		436
		437	static void *
		438	ev_realloc_emul (void *ptr, long size)
		439	{
		440	/* some systems, notably openbsd and darwin, fail to properly
		441	* implement realloc (x, 0) (as required by both ansi c-98 and
		442	* the single unix specification, so work around them here.
		443	*/
		444
		445	if (size)
		446	return realloc (ptr, size);
		447
		448	free (ptr);
		449	return 0;
		450	}
		451
298	static void *(*alloc)(void *ptr, long size);	452	static void *(*alloc)(void *ptr, long size) = ev_realloc_emul;
299		453
300	void	454	void
301	ev_set_allocator (void *(*cb)(void *ptr, long size))	455	ev_set_allocator (void *(*cb)(void *ptr, long size))
302	{	456	{
303	alloc = cb;	457	alloc = cb;
304	}	458	}
305		459
306	inline_speed void *	460	inline_speed void *
307	ev_realloc (void *ptr, long size)	461	ev_realloc (void *ptr, long size)
308	{	462	{
309	ptr = alloc ? alloc (ptr, size) : realloc (ptr, size);	463	ptr = alloc (ptr, size);
310		464
311	if (!ptr && size)	465	if (!ptr && size)
312	{	466	{
313	fprintf (stderr, "libev: cannot allocate %ld bytes, aborting.", size);	467	fprintf (stderr, "libev: cannot allocate %ld bytes, aborting.", size);
314	abort ();	468	abort ();
…		…
325	typedef struct	479	typedef struct
326	{	480	{
327	WL head;	481	WL head;
328	unsigned char events;	482	unsigned char events;
329	unsigned char reify;	483	unsigned char reify;
		484	unsigned char emask; /* the epoll backend stores the actual kernel mask in here */
		485	unsigned char unused;
		486	#if EV_USE_EPOLL
		487	unsigned int egen; /* generation counter to counter epoll bugs */
		488	#endif
330	#if EV_SELECT_IS_WINSOCKET	489	#if EV_SELECT_IS_WINSOCKET
331	SOCKET handle;	490	SOCKET handle;
332	#endif	491	#endif
333	} ANFD;	492	} ANFD;
334		493
…		…
337	W w;	496	W w;
338	int events;	497	int events;
339	} ANPENDING;	498	} ANPENDING;
340		499
341	#if EV_USE_INOTIFY	500	#if EV_USE_INOTIFY
		501	/* hash table entry per inotify-id */
342	typedef struct	502	typedef struct
343	{	503	{
344	WL head;	504	WL head;
345	} ANFS;	505	} ANFS;
		506	#endif
		507
		508	/* Heap Entry */
		509	#if EV_HEAP_CACHE_AT
		510	typedef struct {
		511	ev_tstamp at;
		512	WT w;
		513	} ANHE;
		514
		515	#define ANHE_w(he) (he).w /* access watcher, read-write */
		516	#define ANHE_at(he) (he).at /* access cached at, read-only */
		517	#define ANHE_at_cache(he) (he).at = (he).w->at /* update at from watcher */
		518	#else
		519	typedef WT ANHE;
		520
		521	#define ANHE_w(he) (he)
		522	#define ANHE_at(he) (he)->at
		523	#define ANHE_at_cache(he)
346	#endif	524	#endif
347		525
348	#if EV_MULTIPLICITY	526	#if EV_MULTIPLICITY
349		527
350	struct ev_loop	528	struct ev_loop
…		…
408	{	586	{
409	return ev_rt_now;	587	return ev_rt_now;
410	}	588	}
411	#endif	589	#endif
412		590
		591	void
		592	ev_sleep (ev_tstamp delay)
		593	{
		594	if (delay > 0.)
		595	{
		596	#if EV_USE_NANOSLEEP
		597	struct timespec ts;
		598
		599	ts.tv_sec = (time_t)delay;
		600	ts.tv_nsec = (long)((delay - (ev_tstamp)(ts.tv_sec)) * 1e9);
		601
		602	nanosleep (&ts, 0);
		603	#elif defined(_WIN32)
		604	Sleep ((unsigned long)(delay * 1e3));
		605	#else
		606	struct timeval tv;
		607
		608	tv.tv_sec = (time_t)delay;
		609	tv.tv_usec = (long)((delay - (ev_tstamp)(tv.tv_sec)) * 1e6);
		610
		611	/* here we rely on sys/time.h + sys/types.h + unistd.h providing select */
		612	/* somehting nto guaranteed by newer posix versions, but guaranteed */
		613	/* by older ones */
		614	select (0, 0, 0, 0, &tv);
		615	#endif
		616	}
		617	}
		618
		619	/*****************************************************************************/
		620
		621	#define MALLOC_ROUND 4096 /* prefer to allocate in chunks of this size, must be 2**n and >> 4 longs */
		622
413	int inline_size	623	int inline_size
414	array_nextsize (int elem, int cur, int cnt)	624	array_nextsize (int elem, int cur, int cnt)
415	{	625	{
416	int ncur = cur + 1;	626	int ncur = cur + 1;
417		627
418	do	628	do
419	ncur <<= 1;	629	ncur <<= 1;
420	while (cnt > ncur);	630	while (cnt > ncur);
421		631
422	/* if size > 4096, round to 4096 - 4 * longs to accomodate malloc overhead */	632	/* if size is large, round to MALLOC_ROUND - 4 * longs to accomodate malloc overhead */
423	if (elem * ncur > 4096)	633	if (elem * ncur > MALLOC_ROUND - sizeof (void *) * 4)
424	{	634	{
425	ncur *= elem;	635	ncur *= elem;
426	ncur = (ncur + elem + 4095 + sizeof (void *) * 4) & ~4095;	636	ncur = (ncur + elem + (MALLOC_ROUND - 1) + sizeof (void *) * 4) & ~(MALLOC_ROUND - 1);
427	ncur = ncur - sizeof (void *) * 4;	637	ncur = ncur - sizeof (void *) * 4;
428	ncur /= elem;	638	ncur /= elem;
429	}	639	}
430		640
431	return ncur;	641	return ncur;
…		…
435	array_realloc (int elem, void *base, int *cur, int cnt)	645	array_realloc (int elem, void *base, int *cur, int cnt)
436	{	646	{
437	*cur = array_nextsize (elem, *cur, cnt);	647	*cur = array_nextsize (elem, *cur, cnt);
438	return ev_realloc (base, elem * *cur);	648	return ev_realloc (base, elem * *cur);
439	}	649	}
		650
		651	#define array_init_zero(base,count) \
		652	memset ((void *)(base), 0, sizeof (*(base)) * (count))
440		653
441	#define array_needsize(type,base,cur,cnt,init) \	654	#define array_needsize(type,base,cur,cnt,init) \
442	if (expect_false ((cnt) > (cur))) \	655	if (expect_false ((cnt) > (cur))) \
443	{ \	656	{ \
444	int ocur_ = (cur); \	657	int ocur_ = (cur); \
…		…
488	ev_feed_event (EV_A_ events [i], type);	701	ev_feed_event (EV_A_ events [i], type);
489	}	702	}
490		703
491	/*****************************************************************************/	704	/*****************************************************************************/
492		705
493	void inline_size
494	anfds_init (ANFD *base, int count)
495	{
496	while (count--)
497	{
498	base->head = 0;
499	base->events = EV_NONE;
500	base->reify = 0;
501
502	++base;
503	}
504	}
505
506	void inline_speed	706	void inline_speed
507	fd_event (EV_P_ int fd, int revents)	707	fd_event (EV_P_ int fd, int revents)
508	{	708	{
509	ANFD *anfd = anfds + fd;	709	ANFD *anfd = anfds + fd;
510	ev_io *w;	710	ev_io *w;
…		…
542	events |= (unsigned char)w->events;	742	events |= (unsigned char)w->events;
543		743
544	#if EV_SELECT_IS_WINSOCKET	744	#if EV_SELECT_IS_WINSOCKET
545	if (events)	745	if (events)
546	{	746	{
547	unsigned long argp;	747	unsigned long arg;
		748	#ifdef EV_FD_TO_WIN32_HANDLE
		749	anfd->handle = EV_FD_TO_WIN32_HANDLE (fd);
		750	#else
548	anfd->handle = _get_osfhandle (fd);	751	anfd->handle = _get_osfhandle (fd);
		752	#endif
549	assert (("libev only supports socket fds in this configuration", ioctlsocket (anfd->handle, FIONREAD, &argp) == 0));	753	assert (("libev only supports socket fds in this configuration", ioctlsocket (anfd->handle, FIONREAD, &arg) == 0));
550	}	754	}
551	#endif	755	#endif
552		756
553	{	757	{
554	unsigned char o_events = anfd->events;	758	unsigned char o_events = anfd->events;
…		…
607	{	811	{
608	int fd;	812	int fd;
609		813
610	for (fd = 0; fd < anfdmax; ++fd)	814	for (fd = 0; fd < anfdmax; ++fd)
611	if (anfds [fd].events)	815	if (anfds [fd].events)
612	if (!fd_valid (fd) == -1 && errno == EBADF)	816	if (!fd_valid (fd) && errno == EBADF)
613	fd_kill (EV_A_ fd);	817	fd_kill (EV_A_ fd);
614	}	818	}
615		819
616	/* called on ENOMEM in select/poll to kill some fds and retry */	820	/* called on ENOMEM in select/poll to kill some fds and retry */
617	static void noinline	821	static void noinline
…		…
635		839
636	for (fd = 0; fd < anfdmax; ++fd)	840	for (fd = 0; fd < anfdmax; ++fd)
637	if (anfds [fd].events)	841	if (anfds [fd].events)
638	{	842	{
639	anfds [fd].events = 0;	843	anfds [fd].events = 0;
		844	anfds [fd].emask = 0;
640	fd_change (EV_A_ fd, EV_IOFDSET | 1);	845	fd_change (EV_A_ fd, EV_IOFDSET | 1);
641	}	846	}
642	}	847	}
643		848
644	/*****************************************************************************/	849	/*****************************************************************************/
645		850
		851	/*
		852	* the heap functions want a real array index. array index 0 uis guaranteed to not
		853	* be in-use at any time. the first heap entry is at array [HEAP0]. DHEAP gives
		854	* the branching factor of the d-tree.
		855	*/
		856
		857	/*
		858	* at the moment we allow libev the luxury of two heaps,
		859	* a small-code-size 2-heap one and a ~1.5kb larger 4-heap
		860	* which is more cache-efficient.
		861	* the difference is about 5% with 50000+ watchers.
		862	*/
		863	#if EV_USE_4HEAP
		864
		865	#define DHEAP 4
		866	#define HEAP0 (DHEAP - 1) /* index of first element in heap */
		867	#define HPARENT(k) ((((k) - HEAP0 - 1) / DHEAP) + HEAP0)
		868	#define UPHEAP_DONE(p,k) ((p) == (k))
		869
		870	/* away from the root */
646	void inline_speed	871	void inline_speed
647	upheap (WT *heap, int k)	872	downheap (ANHE *heap, int N, int k)
648	{	873	{
649	WT w = heap [k];	874	ANHE he = heap [k];
		875	ANHE *E = heap + N + HEAP0;
650		876
651	while (k)	877	for (;;)
652	{	878	{
653	int p = (k - 1) >> 1;	879	ev_tstamp minat;
		880	ANHE *minpos;
		881	ANHE *pos = heap + DHEAP * (k - HEAP0) + HEAP0 + 1;
654		882
655	if (heap [p]->at <= w->at)	883	/* find minimum child */
		884	if (expect_true (pos + DHEAP - 1 < E))
		885	{
		886	/* fast path */ (minpos = pos + 0), (minat = ANHE_at (*minpos));
		887	if ( ANHE_at (pos [1]) < minat) (minpos = pos + 1), (minat = ANHE_at (*minpos));
		888	if ( ANHE_at (pos [2]) < minat) (minpos = pos + 2), (minat = ANHE_at (*minpos));
		889	if ( ANHE_at (pos [3]) < minat) (minpos = pos + 3), (minat = ANHE_at (*minpos));
		890	}
		891	else if (pos < E)
		892	{
		893	/* slow path */ (minpos = pos + 0), (minat = ANHE_at (*minpos));
		894	if (pos + 1 < E && ANHE_at (pos [1]) < minat) (minpos = pos + 1), (minat = ANHE_at (*minpos));
		895	if (pos + 2 < E && ANHE_at (pos [2]) < minat) (minpos = pos + 2), (minat = ANHE_at (*minpos));
		896	if (pos + 3 < E && ANHE_at (pos [3]) < minat) (minpos = pos + 3), (minat = ANHE_at (*minpos));
		897	}
		898	else
656	break;	899	break;
657		900
		901	if (ANHE_at (he) <= minat)
		902	break;
		903
		904	heap [k] = *minpos;
		905	ev_active (ANHE_w (*minpos)) = k;
		906
		907	k = minpos - heap;
		908	}
		909
		910	heap [k] = he;
		911	ev_active (ANHE_w (he)) = k;
		912	}
		913
		914	#else /* 4HEAP */
		915
		916	#define HEAP0 1
		917	#define HPARENT(k) ((k) >> 1)
		918	#define UPHEAP_DONE(p,k) (!(p))
		919
		920	/* away from the root */
		921	void inline_speed
		922	downheap (ANHE *heap, int N, int k)
		923	{
		924	ANHE he = heap [k];
		925
		926	for (;;)
		927	{
		928	int c = k << 1;
		929
		930	if (c > N + HEAP0 - 1)
		931	break;
		932
		933	c += c + 1 < N + HEAP0 && ANHE_at (heap [c]) > ANHE_at (heap [c + 1])
		934	? 1 : 0;
		935
		936	if (ANHE_at (he) <= ANHE_at (heap [c]))
		937	break;
		938
		939	heap [k] = heap [c];
		940	ev_active (ANHE_w (heap [k])) = k;
		941
		942	k = c;
		943	}
		944
		945	heap [k] = he;
		946	ev_active (ANHE_w (he)) = k;
		947	}
		948	#endif
		949
		950	/* towards the root */
		951	void inline_speed
		952	upheap (ANHE *heap, int k)
		953	{
		954	ANHE he = heap [k];
		955
		956	for (;;)
		957	{
		958	int p = HPARENT (k);
		959
		960	if (UPHEAP_DONE (p, k) || ANHE_at (heap [p]) <= ANHE_at (he))
		961	break;
		962
658	heap [k] = heap [p];	963	heap [k] = heap [p];
659	((W)heap [k])->active = k + 1;	964	ev_active (ANHE_w (heap [k])) = k;
660	k = p;	965	k = p;
661	}	966	}
662		967
663	heap [k] = w;	968	heap [k] = he;
664	((W)heap [k])->active = k + 1;	969	ev_active (ANHE_w (he)) = k;
665	}
666
667	void inline_speed
668	downheap (WT *heap, int N, int k)
669	{
670	WT w = heap [k];
671
672	for (;;)
673	{
674	int c = (k << 1) + 1;
675
676	if (c >= N)
677	break;
678
679	c += c + 1 < N && heap [c]->at > heap [c + 1]->at
680	? 1 : 0;
681
682	if (w->at <= heap [c]->at)
683	break;
684
685	heap [k] = heap [c];
686	((W)heap [k])->active = k + 1;
687
688	k = c;
689	}
690
691	heap [k] = w;
692	((W)heap [k])->active = k + 1;
693	}	970	}
694		971
695	void inline_size	972	void inline_size
696	adjustheap (WT *heap, int N, int k)	973	adjustheap (ANHE *heap, int N, int k)
697	{	974	{
		975	if (k > HEAP0 && ANHE_at (heap [HPARENT (k)]) >= ANHE_at (heap [k]))
698	upheap (heap, k);	976	upheap (heap, k);
		977	else
699	downheap (heap, N, k);	978	downheap (heap, N, k);
		979	}
		980
		981	/* rebuild the heap: this function is used only once and executed rarely */
		982	void inline_size
		983	reheap (ANHE *heap, int N)
		984	{
		985	int i;
		986
		987	/* we don't use floyds algorithm, upheap is simpler and is more cache-efficient */
		988	/* also, this is easy to implement and correct for both 2-heaps and 4-heaps */
		989	for (i = 0; i < N; ++i)
		990	upheap (heap, i + HEAP0);
700	}	991	}
701		992
702	/*****************************************************************************/	993	/*****************************************************************************/
703		994
704	typedef struct	995	typedef struct
705	{	996	{
706	WL head;	997	WL head;
707	sig_atomic_t volatile gotsig;	998	EV_ATOMIC_T gotsig;
708	} ANSIG;	999	} ANSIG;
709		1000
710	static ANSIG *signals;	1001	static ANSIG *signals;
711	static int signalmax;	1002	static int signalmax;
712		1003
713	static int sigpipe [2];	1004	static EV_ATOMIC_T gotsig;
714	static sig_atomic_t volatile gotsig;
715	static ev_io sigev;
716		1005
717	void inline_size	1006	/*****************************************************************************/
718	signals_init (ANSIG *base, int count)
719	{
720	while (count--)
721	{
722	base->head = 0;
723	base->gotsig = 0;
724
725	++base;
726	}
727	}
728
729	static void
730	sighandler (int signum)
731	{
732	#if _WIN32
733	signal (signum, sighandler);
734	#endif
735
736	signals [signum - 1].gotsig = 1;
737
738	if (!gotsig)
739	{
740	int old_errno = errno;
741	gotsig = 1;
742	write (sigpipe [1], &signum, 1);
743	errno = old_errno;
744	}
745	}
746
747	void noinline
748	ev_feed_signal_event (EV_P_ int signum)
749	{
750	WL w;
751
752	#if EV_MULTIPLICITY
753	assert (("feeding signal events is only supported in the default loop", loop == ev_default_loop_ptr));
754	#endif
755
756	--signum;
757
758	if (signum < 0 || signum >= signalmax)
759	return;
760
761	signals [signum].gotsig = 0;
762
763	for (w = signals [signum].head; w; w = w->next)
764	ev_feed_event (EV_A_ (W)w, EV_SIGNAL);
765	}
766
767	static void
768	sigcb (EV_P_ ev_io *iow, int revents)
769	{
770	int signum;
771
772	read (sigpipe [0], &revents, 1);
773	gotsig = 0;
774
775	for (signum = signalmax; signum--; )
776	if (signals [signum].gotsig)
777	ev_feed_signal_event (EV_A_ signum + 1);
778	}
779		1007
780	void inline_speed	1008	void inline_speed
781	fd_intern (int fd)	1009	fd_intern (int fd)
782	{	1010	{
783	#ifdef _WIN32	1011	#ifdef _WIN32
784	int arg = 1;	1012	unsigned long arg = 1;
785	ioctlsocket (_get_osfhandle (fd), FIONBIO, &arg);	1013	ioctlsocket (_get_osfhandle (fd), FIONBIO, &arg);
786	#else	1014	#else
787	fcntl (fd, F_SETFD, FD_CLOEXEC);	1015	fcntl (fd, F_SETFD, FD_CLOEXEC);
788	fcntl (fd, F_SETFL, O_NONBLOCK);	1016	fcntl (fd, F_SETFL, O_NONBLOCK);
789	#endif	1017	#endif
790	}	1018	}
791		1019
792	static void noinline	1020	static void noinline
793	siginit (EV_P)	1021	evpipe_init (EV_P)
794	{	1022	{
		1023	if (!ev_is_active (&pipeev))
		1024	{
		1025	#if EV_USE_EVENTFD
		1026	if ((evfd = eventfd (0, 0)) >= 0)
		1027	{
		1028	evpipe [0] = -1;
		1029	fd_intern (evfd);
		1030	ev_io_set (&pipeev, evfd, EV_READ);
		1031	}
		1032	else
		1033	#endif
		1034	{
		1035	while (pipe (evpipe))
		1036	ev_syserr ("(libev) error creating signal/async pipe");
		1037
795	fd_intern (sigpipe [0]);	1038	fd_intern (evpipe [0]);
796	fd_intern (sigpipe [1]);	1039	fd_intern (evpipe [1]);
		1040	ev_io_set (&pipeev, evpipe [0], EV_READ);
		1041	}
797		1042
798	ev_io_set (&sigev, sigpipe [0], EV_READ);
799	ev_io_start (EV_A_ &sigev);	1043	ev_io_start (EV_A_ &pipeev);
800	ev_unref (EV_A); /* child watcher should not keep loop alive */	1044	ev_unref (EV_A); /* watcher should not keep loop alive */
		1045	}
		1046	}
		1047
		1048	void inline_size
		1049	evpipe_write (EV_P_ EV_ATOMIC_T *flag)
		1050	{
		1051	if (!*flag)
		1052	{
		1053	int old_errno = errno; /* save errno because write might clobber it */
		1054
		1055	*flag = 1;
		1056
		1057	#if EV_USE_EVENTFD
		1058	if (evfd >= 0)
		1059	{
		1060	uint64_t counter = 1;
		1061	write (evfd, &counter, sizeof (uint64_t));
		1062	}
		1063	else
		1064	#endif
		1065	write (evpipe [1], &old_errno, 1);
		1066
		1067	errno = old_errno;
		1068	}
		1069	}
		1070
		1071	static void
		1072	pipecb (EV_P_ ev_io *iow, int revents)
		1073	{
		1074	#if EV_USE_EVENTFD
		1075	if (evfd >= 0)
		1076	{
		1077	uint64_t counter;
		1078	read (evfd, &counter, sizeof (uint64_t));
		1079	}
		1080	else
		1081	#endif
		1082	{
		1083	char dummy;
		1084	read (evpipe [0], &dummy, 1);
		1085	}
		1086
		1087	if (gotsig && ev_is_default_loop (EV_A))
		1088	{
		1089	int signum;
		1090	gotsig = 0;
		1091
		1092	for (signum = signalmax; signum--; )
		1093	if (signals [signum].gotsig)
		1094	ev_feed_signal_event (EV_A_ signum + 1);
		1095	}
		1096
		1097	#if EV_ASYNC_ENABLE
		1098	if (gotasync)
		1099	{
		1100	int i;
		1101	gotasync = 0;
		1102
		1103	for (i = asynccnt; i--; )
		1104	if (asyncs [i]->sent)
		1105	{
		1106	asyncs [i]->sent = 0;
		1107	ev_feed_event (EV_A_ asyncs [i], EV_ASYNC);
		1108	}
		1109	}
		1110	#endif
801	}	1111	}
802		1112
803	/*****************************************************************************/	1113	/*****************************************************************************/
804		1114
		1115	static void
		1116	ev_sighandler (int signum)
		1117	{
		1118	#if EV_MULTIPLICITY
		1119	struct ev_loop *loop = &default_loop_struct;
		1120	#endif
		1121
		1122	#if _WIN32
		1123	signal (signum, ev_sighandler);
		1124	#endif
		1125
		1126	signals [signum - 1].gotsig = 1;
		1127	evpipe_write (EV_A_ &gotsig);
		1128	}
		1129
		1130	void noinline
		1131	ev_feed_signal_event (EV_P_ int signum)
		1132	{
		1133	WL w;
		1134
		1135	#if EV_MULTIPLICITY
		1136	assert (("feeding signal events is only supported in the default loop", loop == ev_default_loop_ptr));
		1137	#endif
		1138
		1139	--signum;
		1140
		1141	if (signum < 0 || signum >= signalmax)
		1142	return;
		1143
		1144	signals [signum].gotsig = 0;
		1145
		1146	for (w = signals [signum].head; w; w = w->next)
		1147	ev_feed_event (EV_A_ (W)w, EV_SIGNAL);
		1148	}
		1149
		1150	/*****************************************************************************/
		1151
805	static WL childs [EV_PID_HASHSIZE];	1152	static WL childs [EV_PID_HASHSIZE];
806		1153
807	#ifndef _WIN32	1154	#ifndef _WIN32
808		1155
809	static ev_signal childev;	1156	static ev_signal childev;
810		1157
		1158	#ifndef WIFCONTINUED
		1159	# define WIFCONTINUED(status) 0
		1160	#endif
		1161
811	void inline_speed	1162	void inline_speed
812	child_reap (EV_P_ ev_signal *sw, int chain, int pid, int status)	1163	child_reap (EV_P_ int chain, int pid, int status)
813	{	1164	{
814	ev_child *w;	1165	ev_child *w;
		1166	int traced = WIFSTOPPED (status) || WIFCONTINUED (status);
815		1167
816	for (w = (ev_child *)childs [chain & (EV_PID_HASHSIZE - 1)]; w; w = (ev_child *)((WL)w)->next)	1168	for (w = (ev_child *)childs [chain & (EV_PID_HASHSIZE - 1)]; w; w = (ev_child *)((WL)w)->next)
		1169	{
817	if (w->pid == pid || !w->pid)	1170	if ((w->pid == pid || !w->pid)
		1171	&& (!traced || (w->flags & 1)))
818	{	1172	{
819	ev_set_priority (w, ev_priority (sw)); /* need to do it *now* */	1173	ev_set_priority (w, EV_MAXPRI); /* need to do it *now*, this *must* be the same prio as the signal watcher itself */
820	w->rpid = pid;	1174	w->rpid = pid;
821	w->rstatus = status;	1175	w->rstatus = status;
822	ev_feed_event (EV_A_ (W)w, EV_CHILD);	1176	ev_feed_event (EV_A_ (W)w, EV_CHILD);
823	}	1177	}
		1178	}
824	}	1179	}
825		1180
826	#ifndef WCONTINUED	1181	#ifndef WCONTINUED
827	# define WCONTINUED 0	1182	# define WCONTINUED 0
828	#endif	1183	#endif
…		…
837	if (!WCONTINUED	1192	if (!WCONTINUED
838	|| errno != EINVAL	1193	|| errno != EINVAL
839	|| 0 >= (pid = waitpid (-1, &status, WNOHANG | WUNTRACED)))	1194	|| 0 >= (pid = waitpid (-1, &status, WNOHANG | WUNTRACED)))
840	return;	1195	return;
841		1196
842	/* make sure we are called again until all childs have been reaped */	1197	/* make sure we are called again until all children have been reaped */
843	/* we need to do it this way so that the callback gets called before we continue */	1198	/* we need to do it this way so that the callback gets called before we continue */
844	ev_feed_event (EV_A_ (W)sw, EV_SIGNAL);	1199	ev_feed_event (EV_A_ (W)sw, EV_SIGNAL);
845		1200
846	child_reap (EV_A_ sw, pid, pid, status);	1201	child_reap (EV_A_ pid, pid, status);
847	if (EV_PID_HASHSIZE > 1)	1202	if (EV_PID_HASHSIZE > 1)
848	child_reap (EV_A_ sw, 0, pid, status); /* this might trigger a watcher twice, but feed_event catches that */	1203	child_reap (EV_A_ 0, pid, status); /* this might trigger a watcher twice, but feed_event catches that */
849	}	1204	}
850		1205
851	#endif	1206	#endif
852		1207
853	/*****************************************************************************/	1208	/*****************************************************************************/
…		…
925	}	1280	}
926		1281
927	unsigned int	1282	unsigned int
928	ev_embeddable_backends (void)	1283	ev_embeddable_backends (void)
929	{	1284	{
930	return EVBACKEND_EPOLL	1285	int flags = EVBACKEND_EPOLL | EVBACKEND_KQUEUE | EVBACKEND_PORT;
931	| EVBACKEND_KQUEUE	1286
932	| EVBACKEND_PORT;	1287	/* epoll embeddability broken on all linux versions up to at least 2.6.23 */
		1288	/* please fix it and tell me how to detect the fix */
		1289	flags &= ~EVBACKEND_EPOLL;
		1290
		1291	return flags;
933	}	1292	}
934		1293
935	unsigned int	1294	unsigned int
936	ev_backend (EV_P)	1295	ev_backend (EV_P)
937	{	1296	{
…		…
940		1299
941	unsigned int	1300	unsigned int
942	ev_loop_count (EV_P)	1301	ev_loop_count (EV_P)
943	{	1302	{
944	return loop_count;	1303	return loop_count;
		1304	}
		1305
		1306	void
		1307	ev_set_io_collect_interval (EV_P_ ev_tstamp interval)
		1308	{
		1309	io_blocktime = interval;
		1310	}
		1311
		1312	void
		1313	ev_set_timeout_collect_interval (EV_P_ ev_tstamp interval)
		1314	{
		1315	timeout_blocktime = interval;
945	}	1316	}
946		1317
947	static void noinline	1318	static void noinline
948	loop_init (EV_P_ unsigned int flags)	1319	loop_init (EV_P_ unsigned int flags)
949	{	1320	{
…		…
955	if (!clock_gettime (CLOCK_MONOTONIC, &ts))	1326	if (!clock_gettime (CLOCK_MONOTONIC, &ts))
956	have_monotonic = 1;	1327	have_monotonic = 1;
957	}	1328	}
958	#endif	1329	#endif
959		1330
960	ev_rt_now = ev_time ();	1331	ev_rt_now = ev_time ();
961	mn_now = get_clock ();	1332	mn_now = get_clock ();
962	now_floor = mn_now;	1333	now_floor = mn_now;
963	rtmn_diff = ev_rt_now - mn_now;	1334	rtmn_diff = ev_rt_now - mn_now;
		1335
		1336	io_blocktime = 0.;
		1337	timeout_blocktime = 0.;
		1338	backend = 0;
		1339	backend_fd = -1;
		1340	gotasync = 0;
		1341	#if EV_USE_INOTIFY
		1342	fs_fd = -2;
		1343	#endif
964		1344
965	/* pid check not overridable via env */	1345	/* pid check not overridable via env */
966	#ifndef _WIN32	1346	#ifndef _WIN32
967	if (flags & EVFLAG_FORKCHECK)	1347	if (flags & EVFLAG_FORKCHECK)
968	curpid = getpid ();	1348	curpid = getpid ();
…		…
971	if (!(flags & EVFLAG_NOENV)	1351	if (!(flags & EVFLAG_NOENV)
972	&& !enable_secure ()	1352	&& !enable_secure ()
973	&& getenv ("LIBEV_FLAGS"))	1353	&& getenv ("LIBEV_FLAGS"))
974	flags = atoi (getenv ("LIBEV_FLAGS"));	1354	flags = atoi (getenv ("LIBEV_FLAGS"));
975		1355
976	if (!(flags & 0x0000ffffUL))	1356	if (!(flags & 0x0000ffffU))
977	flags |= ev_recommended_backends ();	1357	flags |= ev_recommended_backends ();
978
979	backend = 0;
980	backend_fd = -1;
981	#if EV_USE_INOTIFY
982	fs_fd = -2;
983	#endif
984		1358
985	#if EV_USE_PORT	1359	#if EV_USE_PORT
986	if (!backend && (flags & EVBACKEND_PORT )) backend = port_init (EV_A_ flags);	1360	if (!backend && (flags & EVBACKEND_PORT )) backend = port_init (EV_A_ flags);
987	#endif	1361	#endif
988	#if EV_USE_KQUEUE	1362	#if EV_USE_KQUEUE
…		…
996	#endif	1370	#endif
997	#if EV_USE_SELECT	1371	#if EV_USE_SELECT
998	if (!backend && (flags & EVBACKEND_SELECT)) backend = select_init (EV_A_ flags);	1372	if (!backend && (flags & EVBACKEND_SELECT)) backend = select_init (EV_A_ flags);
999	#endif	1373	#endif
1000		1374
1001	ev_init (&sigev, sigcb);	1375	ev_init (&pipeev, pipecb);
1002	ev_set_priority (&sigev, EV_MAXPRI);	1376	ev_set_priority (&pipeev, EV_MAXPRI);
1003	}	1377	}
1004	}	1378	}
1005		1379
1006	static void noinline	1380	static void noinline
1007	loop_destroy (EV_P)	1381	loop_destroy (EV_P)
1008	{	1382	{
1009	int i;	1383	int i;
		1384
		1385	if (ev_is_active (&pipeev))
		1386	{
		1387	ev_ref (EV_A); /* signal watcher */
		1388	ev_io_stop (EV_A_ &pipeev);
		1389
		1390	#if EV_USE_EVENTFD
		1391	if (evfd >= 0)
		1392	close (evfd);
		1393	#endif
		1394
		1395	if (evpipe [0] >= 0)
		1396	{
		1397	close (evpipe [0]);
		1398	close (evpipe [1]);
		1399	}
		1400	}
1010		1401
1011	#if EV_USE_INOTIFY	1402	#if EV_USE_INOTIFY
1012	if (fs_fd >= 0)	1403	if (fs_fd >= 0)
1013	close (fs_fd);	1404	close (fs_fd);
1014	#endif	1405	#endif
…		…
1051	#if EV_FORK_ENABLE	1442	#if EV_FORK_ENABLE
1052	array_free (fork, EMPTY);	1443	array_free (fork, EMPTY);
1053	#endif	1444	#endif
1054	array_free (prepare, EMPTY);	1445	array_free (prepare, EMPTY);
1055	array_free (check, EMPTY);	1446	array_free (check, EMPTY);
		1447	#if EV_ASYNC_ENABLE
		1448	array_free (async, EMPTY);
		1449	#endif
1056		1450
1057	backend = 0;	1451	backend = 0;
1058	}	1452	}
1059		1453
		1454	#if EV_USE_INOTIFY
1060	void inline_size infy_fork (EV_P);	1455	void inline_size infy_fork (EV_P);
		1456	#endif
1061		1457
1062	void inline_size	1458	void inline_size
1063	loop_fork (EV_P)	1459	loop_fork (EV_P)
1064	{	1460	{
1065	#if EV_USE_PORT	1461	#if EV_USE_PORT
…		…
1073	#endif	1469	#endif
1074	#if EV_USE_INOTIFY	1470	#if EV_USE_INOTIFY
1075	infy_fork (EV_A);	1471	infy_fork (EV_A);
1076	#endif	1472	#endif
1077		1473
1078	if (ev_is_active (&sigev))	1474	if (ev_is_active (&pipeev))
1079	{	1475	{
1080	/* default loop */	1476	/* this "locks" the handlers against writing to the pipe */
		1477	/* while we modify the fd vars */
		1478	gotsig = 1;
		1479	#if EV_ASYNC_ENABLE
		1480	gotasync = 1;
		1481	#endif
1081		1482
1082	ev_ref (EV_A);	1483	ev_ref (EV_A);
1083	ev_io_stop (EV_A_ &sigev);	1484	ev_io_stop (EV_A_ &pipeev);
		1485
		1486	#if EV_USE_EVENTFD
		1487	if (evfd >= 0)
		1488	close (evfd);
		1489	#endif
		1490
		1491	if (evpipe [0] >= 0)
		1492	{
1084	close (sigpipe [0]);	1493	close (evpipe [0]);
1085	close (sigpipe [1]);	1494	close (evpipe [1]);
		1495	}
1086		1496
1087	while (pipe (sigpipe))
1088	syserr ("(libev) error creating pipe");
1089
1090	siginit (EV_A);	1497	evpipe_init (EV_A);
		1498	/* now iterate over everything, in case we missed something */
		1499	pipecb (EV_A_ &pipeev, EV_READ);
1091	}	1500	}
1092		1501
1093	postfork = 0;	1502	postfork = 0;
1094	}	1503	}
1095		1504
1096	#if EV_MULTIPLICITY	1505	#if EV_MULTIPLICITY
		1506
1097	struct ev_loop *	1507	struct ev_loop *
1098	ev_loop_new (unsigned int flags)	1508	ev_loop_new (unsigned int flags)
1099	{	1509	{
1100	struct ev_loop *loop = (struct ev_loop *)ev_malloc (sizeof (struct ev_loop));	1510	struct ev_loop *loop = (struct ev_loop *)ev_malloc (sizeof (struct ev_loop));
1101		1511
…		…
1117	}	1527	}
1118		1528
1119	void	1529	void
1120	ev_loop_fork (EV_P)	1530	ev_loop_fork (EV_P)
1121	{	1531	{
1122	postfork = 1;	1532	postfork = 1; /* must be in line with ev_default_fork */
1123	}	1533	}
1124		1534
		1535	#if EV_VERIFY
		1536	static void noinline
		1537	verify_watcher (EV_P_ W w)
		1538	{
		1539	assert (("watcher has invalid priority", ABSPRI (w) >= 0 && ABSPRI (w) < NUMPRI));
		1540
		1541	if (w->pending)
		1542	assert (("pending watcher not on pending queue", pendings [ABSPRI (w)][w->pending - 1].w == w));
		1543	}
		1544
		1545	static void noinline
		1546	verify_heap (EV_P_ ANHE *heap, int N)
		1547	{
		1548	int i;
		1549
		1550	for (i = HEAP0; i < N + HEAP0; ++i)
		1551	{
		1552	assert (("active index mismatch in heap", ev_active (ANHE_w (heap [i])) == i));
		1553	assert (("heap condition violated", i == HEAP0 || ANHE_at (heap [HPARENT (i)]) <= ANHE_at (heap [i])));
		1554	assert (("heap at cache mismatch", ANHE_at (heap [i]) == ev_at (ANHE_w (heap [i]))));
		1555
		1556	verify_watcher (EV_A_ (W)ANHE_w (heap [i]));
		1557	}
		1558	}
		1559
		1560	static void noinline
		1561	array_verify (EV_P_ W *ws, int cnt)
		1562	{
		1563	while (cnt--)
		1564	{
		1565	assert (("active index mismatch", ev_active (ws [cnt]) == cnt + 1));
		1566	verify_watcher (EV_A_ ws [cnt]);
		1567	}
		1568	}
		1569	#endif
		1570
		1571	void
		1572	ev_loop_verify (EV_P)
		1573	{
		1574	#if EV_VERIFY
		1575	int i;
		1576	WL w;
		1577
		1578	assert (activecnt >= -1);
		1579
		1580	assert (fdchangemax >= fdchangecnt);
		1581	for (i = 0; i < fdchangecnt; ++i)
		1582	assert (("negative fd in fdchanges", fdchanges [i] >= 0));
		1583
		1584	assert (anfdmax >= 0);
		1585	for (i = 0; i < anfdmax; ++i)
		1586	for (w = anfds [i].head; w; w = w->next)
		1587	{
		1588	verify_watcher (EV_A_ (W)w);
		1589	assert (("inactive fd watcher on anfd list", ev_active (w) == 1));
		1590	assert (("fd mismatch between watcher and anfd", ((ev_io *)w)->fd == i));
		1591	}
		1592
		1593	assert (timermax >= timercnt);
		1594	verify_heap (EV_A_ timers, timercnt);
		1595
		1596	#if EV_PERIODIC_ENABLE
		1597	assert (periodicmax >= periodiccnt);
		1598	verify_heap (EV_A_ periodics, periodiccnt);
		1599	#endif
		1600
		1601	for (i = NUMPRI; i--; )
		1602	{
		1603	assert (pendingmax [i] >= pendingcnt [i]);
		1604	#if EV_IDLE_ENABLE
		1605	assert (idleall >= 0);
		1606	assert (idlemax [i] >= idlecnt [i]);
		1607	array_verify (EV_A_ (W *)idles [i], idlecnt [i]);
		1608	#endif
		1609	}
		1610
		1611	#if EV_FORK_ENABLE
		1612	assert (forkmax >= forkcnt);
		1613	array_verify (EV_A_ (W *)forks, forkcnt);
		1614	#endif
		1615
		1616	#if EV_ASYNC_ENABLE
		1617	assert (asyncmax >= asynccnt);
		1618	array_verify (EV_A_ (W *)asyncs, asynccnt);
		1619	#endif
		1620
		1621	assert (preparemax >= preparecnt);
		1622	array_verify (EV_A_ (W *)prepares, preparecnt);
		1623
		1624	assert (checkmax >= checkcnt);
		1625	array_verify (EV_A_ (W *)checks, checkcnt);
		1626
		1627	# if 0
		1628	for (w = (ev_child *)childs [chain & (EV_PID_HASHSIZE - 1)]; w; w = (ev_child *)((WL)w)->next)
		1629	for (signum = signalmax; signum--; ) if (signals [signum].gotsig)
1125	#endif	1630	# endif
		1631	#endif
		1632	}
		1633
		1634	#endif /* multiplicity */
1126		1635
1127	#if EV_MULTIPLICITY	1636	#if EV_MULTIPLICITY
1128	struct ev_loop *	1637	struct ev_loop *
1129	ev_default_loop_init (unsigned int flags)	1638	ev_default_loop_init (unsigned int flags)
1130	#else	1639	#else
1131	int	1640	int
1132	ev_default_loop (unsigned int flags)	1641	ev_default_loop (unsigned int flags)
1133	#endif	1642	#endif
1134	{	1643	{
1135	if (sigpipe [0] == sigpipe [1])
1136	if (pipe (sigpipe))
1137	return 0;
1138
1139	if (!ev_default_loop_ptr)	1644	if (!ev_default_loop_ptr)
1140	{	1645	{
1141	#if EV_MULTIPLICITY	1646	#if EV_MULTIPLICITY
1142	struct ev_loop *loop = ev_default_loop_ptr = &default_loop_struct;	1647	struct ev_loop *loop = ev_default_loop_ptr = &default_loop_struct;
1143	#else	1648	#else
…		…
1146		1651
1147	loop_init (EV_A_ flags);	1652	loop_init (EV_A_ flags);
1148		1653
1149	if (ev_backend (EV_A))	1654	if (ev_backend (EV_A))
1150	{	1655	{
1151	siginit (EV_A);
1152
1153	#ifndef _WIN32	1656	#ifndef _WIN32
1154	ev_signal_init (&childev, childcb, SIGCHLD);	1657	ev_signal_init (&childev, childcb, SIGCHLD);
1155	ev_set_priority (&childev, EV_MAXPRI);	1658	ev_set_priority (&childev, EV_MAXPRI);
1156	ev_signal_start (EV_A_ &childev);	1659	ev_signal_start (EV_A_ &childev);
1157	ev_unref (EV_A); /* child watcher should not keep loop alive */	1660	ev_unref (EV_A); /* child watcher should not keep loop alive */
…		…
1169	{	1672	{
1170	#if EV_MULTIPLICITY	1673	#if EV_MULTIPLICITY
1171	struct ev_loop *loop = ev_default_loop_ptr;	1674	struct ev_loop *loop = ev_default_loop_ptr;
1172	#endif	1675	#endif
1173		1676
		1677	ev_default_loop_ptr = 0;
		1678
1174	#ifndef _WIN32	1679	#ifndef _WIN32
1175	ev_ref (EV_A); /* child watcher */	1680	ev_ref (EV_A); /* child watcher */
1176	ev_signal_stop (EV_A_ &childev);	1681	ev_signal_stop (EV_A_ &childev);
1177	#endif	1682	#endif
1178		1683
1179	ev_ref (EV_A); /* signal watcher */
1180	ev_io_stop (EV_A_ &sigev);
1181
1182	close (sigpipe [0]); sigpipe [0] = 0;
1183	close (sigpipe [1]); sigpipe [1] = 0;
1184
1185	loop_destroy (EV_A);	1684	loop_destroy (EV_A);
1186	}	1685	}
1187		1686
1188	void	1687	void
1189	ev_default_fork (void)	1688	ev_default_fork (void)
1190	{	1689	{
1191	#if EV_MULTIPLICITY	1690	#if EV_MULTIPLICITY
1192	struct ev_loop *loop = ev_default_loop_ptr;	1691	struct ev_loop *loop = ev_default_loop_ptr;
1193	#endif	1692	#endif
1194		1693
1195	if (backend)	1694	postfork = 1; /* must be in line with ev_loop_fork */
1196	postfork = 1;
1197	}	1695	}
1198		1696
1199	/*****************************************************************************/	1697	/*****************************************************************************/
1200		1698
1201	void	1699	void
…		…
1218	{	1716	{
1219	/*assert (("non-pending watcher on pending list", p->w->pending));*/	1717	/*assert (("non-pending watcher on pending list", p->w->pending));*/
1220		1718
1221	p->w->pending = 0;	1719	p->w->pending = 0;
1222	EV_CB_INVOKE (p->w, p->events);	1720	EV_CB_INVOKE (p->w, p->events);
		1721	EV_FREQUENT_CHECK;
1223	}	1722	}
1224	}	1723	}
1225	}	1724	}
1226
1227	void inline_size
1228	timers_reify (EV_P)
1229	{
1230	while (timercnt && ((WT)timers [0])->at <= mn_now)
1231	{
1232	ev_timer *w = (ev_timer *)timers [0];
1233
1234	/*assert (("inactive timer on timer heap detected", ev_is_active (w)));*/
1235
1236	/* first reschedule or stop timer */
1237	if (w->repeat)
1238	{
1239	assert (("negative ev_timer repeat value found while processing timers", w->repeat > 0.));
1240
1241	((WT)w)->at += w->repeat;
1242	if (((WT)w)->at < mn_now)
1243	((WT)w)->at = mn_now;
1244
1245	downheap (timers, timercnt, 0);
1246	}
1247	else
1248	ev_timer_stop (EV_A_ w); /* nonrepeating: stop timer */
1249
1250	ev_feed_event (EV_A_ (W)w, EV_TIMEOUT);
1251	}
1252	}
1253
1254	#if EV_PERIODIC_ENABLE
1255	void inline_size
1256	periodics_reify (EV_P)
1257	{
1258	while (periodiccnt && ((WT)periodics [0])->at <= ev_rt_now)
1259	{
1260	ev_periodic *w = (ev_periodic *)periodics [0];
1261
1262	/*assert (("inactive timer on periodic heap detected", ev_is_active (w)));*/
1263
1264	/* first reschedule or stop timer */
1265	if (w->reschedule_cb)
1266	{
1267	((WT)w)->at = w->reschedule_cb (w, ev_rt_now + TIME_EPSILON);
1268	assert (("ev_periodic reschedule callback returned time in the past", ((WT)w)->at > ev_rt_now));
1269	downheap (periodics, periodiccnt, 0);
1270	}
1271	else if (w->interval)
1272	{
1273	((WT)w)->at = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval;
1274	if (((WT)w)->at - ev_rt_now <= TIME_EPSILON) ((WT)w)->at += w->interval;
1275	assert (("ev_periodic timeout in the past detected while processing timers, negative interval?", ((WT)w)->at > ev_rt_now));
1276	downheap (periodics, periodiccnt, 0);
1277	}
1278	else
1279	ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */
1280
1281	ev_feed_event (EV_A_ (W)w, EV_PERIODIC);
1282	}
1283	}
1284
1285	static void noinline
1286	periodics_reschedule (EV_P)
1287	{
1288	int i;
1289
1290	/* adjust periodics after time jump */
1291	for (i = 0; i < periodiccnt; ++i)
1292	{
1293	ev_periodic *w = (ev_periodic *)periodics [i];
1294
1295	if (w->reschedule_cb)
1296	((WT)w)->at = w->reschedule_cb (w, ev_rt_now);
1297	else if (w->interval)
1298	((WT)w)->at = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval;
1299	}
1300
1301	/* now rebuild the heap */
1302	for (i = periodiccnt >> 1; i--; )
1303	downheap (periodics, periodiccnt, i);
1304	}
1305	#endif
1306		1725
1307	#if EV_IDLE_ENABLE	1726	#if EV_IDLE_ENABLE
1308	void inline_size	1727	void inline_size
1309	idle_reify (EV_P)	1728	idle_reify (EV_P)
1310	{	1729	{
…		…
1322	queue_events (EV_A_ (W *)idles [pri], idlecnt [pri], EV_IDLE);	1741	queue_events (EV_A_ (W *)idles [pri], idlecnt [pri], EV_IDLE);
1323	break;	1742	break;
1324	}	1743	}
1325	}	1744	}
1326	}	1745	}
		1746	}
		1747	#endif
		1748
		1749	void inline_size
		1750	timers_reify (EV_P)
		1751	{
		1752	EV_FREQUENT_CHECK;
		1753
		1754	while (timercnt && ANHE_at (timers [HEAP0]) < mn_now)
		1755	{
		1756	ev_timer *w = (ev_timer *)ANHE_w (timers [HEAP0]);
		1757
		1758	/*assert (("inactive timer on timer heap detected", ev_is_active (w)));*/
		1759
		1760	/* first reschedule or stop timer */
		1761	if (w->repeat)
		1762	{
		1763	ev_at (w) += w->repeat;
		1764	if (ev_at (w) < mn_now)
		1765	ev_at (w) = mn_now;
		1766
		1767	assert (("negative ev_timer repeat value found while processing timers", w->repeat > 0.));
		1768
		1769	ANHE_at_cache (timers [HEAP0]);
		1770	downheap (timers, timercnt, HEAP0);
		1771	}
		1772	else
		1773	ev_timer_stop (EV_A_ w); /* nonrepeating: stop timer */
		1774
		1775	EV_FREQUENT_CHECK;
		1776	ev_feed_event (EV_A_ (W)w, EV_TIMEOUT);
		1777	}
		1778	}
		1779
		1780	#if EV_PERIODIC_ENABLE
		1781	void inline_size
		1782	periodics_reify (EV_P)
		1783	{
		1784	EV_FREQUENT_CHECK;
		1785
		1786	while (periodiccnt && ANHE_at (periodics [HEAP0]) < ev_rt_now)
		1787	{
		1788	ev_periodic *w = (ev_periodic *)ANHE_w (periodics [HEAP0]);
		1789
		1790	/*assert (("inactive timer on periodic heap detected", ev_is_active (w)));*/
		1791
		1792	/* first reschedule or stop timer */
		1793	if (w->reschedule_cb)
		1794	{
		1795	ev_at (w) = w->reschedule_cb (w, ev_rt_now);
		1796
		1797	assert (("ev_periodic reschedule callback returned time in the past", ev_at (w) >= ev_rt_now));
		1798
		1799	ANHE_at_cache (periodics [HEAP0]);
		1800	downheap (periodics, periodiccnt, HEAP0);
		1801	}
		1802	else if (w->interval)
		1803	{
		1804	ev_at (w) = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval;
		1805	/* if next trigger time is not sufficiently in the future, put it there */
		1806	/* this might happen because of floating point inexactness */
		1807	if (ev_at (w) - ev_rt_now < TIME_EPSILON)
		1808	{
		1809	ev_at (w) += w->interval;
		1810
		1811	/* if interval is unreasonably low we might still have a time in the past */
		1812	/* so correct this. this will make the periodic very inexact, but the user */
		1813	/* has effectively asked to get triggered more often than possible */
		1814	if (ev_at (w) < ev_rt_now)
		1815	ev_at (w) = ev_rt_now;
		1816	}
		1817
		1818	ANHE_at_cache (periodics [HEAP0]);
		1819	downheap (periodics, periodiccnt, HEAP0);
		1820	}
		1821	else
		1822	ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */
		1823
		1824	EV_FREQUENT_CHECK;
		1825	ev_feed_event (EV_A_ (W)w, EV_PERIODIC);
		1826	}
		1827	}
		1828
		1829	static void noinline
		1830	periodics_reschedule (EV_P)
		1831	{
		1832	int i;
		1833
		1834	/* adjust periodics after time jump */
		1835	for (i = HEAP0; i < periodiccnt + HEAP0; ++i)
		1836	{
		1837	ev_periodic *w = (ev_periodic *)ANHE_w (periodics [i]);
		1838
		1839	if (w->reschedule_cb)
		1840	ev_at (w) = w->reschedule_cb (w, ev_rt_now);
		1841	else if (w->interval)
		1842	ev_at (w) = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval;
		1843
		1844	ANHE_at_cache (periodics [i]);
		1845	}
		1846
		1847	reheap (periodics, periodiccnt);
1327	}	1848	}
1328	#endif	1849	#endif
1329		1850
1330	void inline_speed	1851	void inline_speed
1331	time_update (EV_P_ ev_tstamp max_block)	1852	time_update (EV_P_ ev_tstamp max_block)
…		…
1360	*/	1881	*/
1361	for (i = 4; --i; )	1882	for (i = 4; --i; )
1362	{	1883	{
1363	rtmn_diff = ev_rt_now - mn_now;	1884	rtmn_diff = ev_rt_now - mn_now;
1364		1885
1365	if (fabs (odiff - rtmn_diff) < MIN_TIMEJUMP)	1886	if (expect_true (fabs (odiff - rtmn_diff) < MIN_TIMEJUMP))
1366	return; /* all is well */	1887	return; /* all is well */
1367		1888
1368	ev_rt_now = ev_time ();	1889	ev_rt_now = ev_time ();
1369	mn_now = get_clock ();	1890	mn_now = get_clock ();
1370	now_floor = mn_now;	1891	now_floor = mn_now;
…		…
1386	#if EV_PERIODIC_ENABLE	1907	#if EV_PERIODIC_ENABLE
1387	periodics_reschedule (EV_A);	1908	periodics_reschedule (EV_A);
1388	#endif	1909	#endif
1389	/* adjust timers. this is easy, as the offset is the same for all of them */	1910	/* adjust timers. this is easy, as the offset is the same for all of them */
1390	for (i = 0; i < timercnt; ++i)	1911	for (i = 0; i < timercnt; ++i)
		1912	{
		1913	ANHE *he = timers + i + HEAP0;
1391	((WT)timers [i])->at += ev_rt_now - mn_now;	1914	ANHE_w (*he)->at += ev_rt_now - mn_now;
		1915	ANHE_at_cache (*he);
		1916	}
1392	}	1917	}
1393		1918
1394	mn_now = ev_rt_now;	1919	mn_now = ev_rt_now;
1395	}	1920	}
1396	}	1921	}
…		…
1405	ev_unref (EV_P)	1930	ev_unref (EV_P)
1406	{	1931	{
1407	--activecnt;	1932	--activecnt;
1408	}	1933	}
1409		1934
		1935	void
		1936	ev_now_update (EV_P)
		1937	{
		1938	time_update (EV_A_ 1e100);
		1939	}
		1940
1410	static int loop_done;	1941	static int loop_done;
1411		1942
1412	void	1943	void
1413	ev_loop (EV_P_ int flags)	1944	ev_loop (EV_P_ int flags)
1414	{	1945	{
1415	loop_done = flags & (EVLOOP_ONESHOT | EVLOOP_NONBLOCK)	1946	loop_done = EVUNLOOP_CANCEL;
1416	? EVUNLOOP_ONE
1417	: EVUNLOOP_CANCEL;
1418		1947
1419	call_pending (EV_A); /* in case we recurse, ensure ordering stays nice and clean */	1948	call_pending (EV_A); /* in case we recurse, ensure ordering stays nice and clean */
1420		1949
1421	do	1950	do
1422	{	1951	{
		1952	#if EV_VERIFY >= 2
		1953	ev_loop_verify (EV_A);
		1954	#endif
		1955
1423	#ifndef _WIN32	1956	#ifndef _WIN32
1424	if (expect_false (curpid)) /* penalise the forking check even more */	1957	if (expect_false (curpid)) /* penalise the forking check even more */
1425	if (expect_false (getpid () != curpid))	1958	if (expect_false (getpid () != curpid))
1426	{	1959	{
1427	curpid = getpid ();	1960	curpid = getpid ();
…		…
1456	/* update fd-related kernel structures */	1989	/* update fd-related kernel structures */
1457	fd_reify (EV_A);	1990	fd_reify (EV_A);
1458		1991
1459	/* calculate blocking time */	1992	/* calculate blocking time */
1460	{	1993	{
1461	ev_tstamp block;	1994	ev_tstamp waittime = 0.;
		1995	ev_tstamp sleeptime = 0.;
1462		1996
1463	if (expect_false (flags & EVLOOP_NONBLOCK || idleall || !activecnt))	1997	if (expect_true (!(flags & EVLOOP_NONBLOCK || idleall || !activecnt)))
1464	block = 0.; /* do not block at all */
1465	else
1466	{	1998	{
1467	/* update time to cancel out callback processing overhead */	1999	/* update time to cancel out callback processing overhead */
1468	time_update (EV_A_ 1e100);	2000	time_update (EV_A_ 1e100);
1469		2001
1470	block = MAX_BLOCKTIME;	2002	waittime = MAX_BLOCKTIME;
1471		2003
1472	if (timercnt)	2004	if (timercnt)
1473	{	2005	{
1474	ev_tstamp to = ((WT)timers [0])->at - mn_now + backend_fudge;	2006	ev_tstamp to = ANHE_at (timers [HEAP0]) - mn_now + backend_fudge;
1475	if (block > to) block = to;	2007	if (waittime > to) waittime = to;
1476	}	2008	}
1477		2009
1478	#if EV_PERIODIC_ENABLE	2010	#if EV_PERIODIC_ENABLE
1479	if (periodiccnt)	2011	if (periodiccnt)
1480	{	2012	{
1481	ev_tstamp to = ((WT)periodics [0])->at - ev_rt_now + backend_fudge;	2013	ev_tstamp to = ANHE_at (periodics [HEAP0]) - ev_rt_now + backend_fudge;
1482	if (block > to) block = to;	2014	if (waittime > to) waittime = to;
1483	}	2015	}
1484	#endif	2016	#endif
1485		2017
1486	if (expect_false (block < 0.)) block = 0.;	2018	if (expect_false (waittime < timeout_blocktime))
		2019	waittime = timeout_blocktime;
		2020
		2021	sleeptime = waittime - backend_fudge;
		2022
		2023	if (expect_true (sleeptime > io_blocktime))
		2024	sleeptime = io_blocktime;
		2025
		2026	if (sleeptime)
		2027	{
		2028	ev_sleep (sleeptime);
		2029	waittime -= sleeptime;
		2030	}
1487	}	2031	}
1488		2032
1489	++loop_count;	2033	++loop_count;
1490	backend_poll (EV_A_ block);	2034	backend_poll (EV_A_ waittime);
1491		2035
1492	/* update ev_rt_now, do magic */	2036	/* update ev_rt_now, do magic */
1493	time_update (EV_A_ block);	2037	time_update (EV_A_ waittime + sleeptime);
1494	}	2038	}
1495		2039
1496	/* queue pending timers and reschedule them */	2040	/* queue pending timers and reschedule them */
1497	timers_reify (EV_A); /* relative timers called last */	2041	timers_reify (EV_A); /* relative timers called last */
1498	#if EV_PERIODIC_ENABLE	2042	#if EV_PERIODIC_ENABLE
…		…
1507	/* queue check watchers, to be executed first */	2051	/* queue check watchers, to be executed first */
1508	if (expect_false (checkcnt))	2052	if (expect_false (checkcnt))
1509	queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK);	2053	queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK);
1510		2054
1511	call_pending (EV_A);	2055	call_pending (EV_A);
1512
1513	}	2056	}
1514	while (expect_true (activecnt && !loop_done));	2057	while (expect_true (
		2058	activecnt
		2059	&& !loop_done
		2060	&& !(flags & (EVLOOP_ONESHOT | EVLOOP_NONBLOCK))
		2061	));
1515		2062
1516	if (loop_done == EVUNLOOP_ONE)	2063	if (loop_done == EVUNLOOP_ONE)
1517	loop_done = EVUNLOOP_CANCEL;	2064	loop_done = EVUNLOOP_CANCEL;
1518	}	2065	}
1519		2066
…		…
1607		2154
1608	if (expect_false (ev_is_active (w)))	2155	if (expect_false (ev_is_active (w)))
1609	return;	2156	return;
1610		2157
1611	assert (("ev_io_start called with negative fd", fd >= 0));	2158	assert (("ev_io_start called with negative fd", fd >= 0));
		2159	assert (("ev_io start called with illegal event mask", !(w->events & ~(EV_IOFDSET | EV_READ | EV_WRITE))));
		2160
		2161	EV_FREQUENT_CHECK;
1612		2162
1613	ev_start (EV_A_ (W)w, 1);	2163	ev_start (EV_A_ (W)w, 1);
1614	array_needsize (ANFD, anfds, anfdmax, fd + 1, anfds_init);	2164	array_needsize (ANFD, anfds, anfdmax, fd + 1, array_init_zero);
1615	wlist_add (&anfds[fd].head, (WL)w);	2165	wlist_add (&anfds[fd].head, (WL)w);
1616		2166
1617	fd_change (EV_A_ fd, w->events & EV_IOFDSET | 1);	2167	fd_change (EV_A_ fd, w->events & EV_IOFDSET | 1);
1618	w->events &= ~EV_IOFDSET;	2168	w->events &= ~EV_IOFDSET;
		2169
		2170	EV_FREQUENT_CHECK;
1619	}	2171	}
1620		2172
1621	void noinline	2173	void noinline
1622	ev_io_stop (EV_P_ ev_io *w)	2174	ev_io_stop (EV_P_ ev_io *w)
1623	{	2175	{
1624	clear_pending (EV_A_ (W)w);	2176	clear_pending (EV_A_ (W)w);
1625	if (expect_false (!ev_is_active (w)))	2177	if (expect_false (!ev_is_active (w)))
1626	return;	2178	return;
1627		2179
1628	assert (("ev_io_start called with illegal fd (must stay constant after start!)", w->fd >= 0 && w->fd < anfdmax));	2180	assert (("ev_io_stop called with illegal fd (must stay constant after start!)", w->fd >= 0 && w->fd < anfdmax));
		2181
		2182	EV_FREQUENT_CHECK;
1629		2183
1630	wlist_del (&anfds[w->fd].head, (WL)w);	2184	wlist_del (&anfds[w->fd].head, (WL)w);
1631	ev_stop (EV_A_ (W)w);	2185	ev_stop (EV_A_ (W)w);
1632		2186
1633	fd_change (EV_A_ w->fd, 1);	2187	fd_change (EV_A_ w->fd, 1);
		2188
		2189	EV_FREQUENT_CHECK;
1634	}	2190	}
1635		2191
1636	void noinline	2192	void noinline
1637	ev_timer_start (EV_P_ ev_timer *w)	2193	ev_timer_start (EV_P_ ev_timer *w)
1638	{	2194	{
1639	if (expect_false (ev_is_active (w)))	2195	if (expect_false (ev_is_active (w)))
1640	return;	2196	return;
1641		2197
1642	((WT)w)->at += mn_now;	2198	ev_at (w) += mn_now;
1643		2199
1644	assert (("ev_timer_start called with negative timer repeat value", w->repeat >= 0.));	2200	assert (("ev_timer_start called with negative timer repeat value", w->repeat >= 0.));
1645		2201
		2202	EV_FREQUENT_CHECK;
		2203
		2204	++timercnt;
1646	ev_start (EV_A_ (W)w, ++timercnt);	2205	ev_start (EV_A_ (W)w, timercnt + HEAP0 - 1);
1647	array_needsize (WT, timers, timermax, timercnt, EMPTY2);	2206	array_needsize (ANHE, timers, timermax, ev_active (w) + 1, EMPTY2);
1648	timers [timercnt - 1] = (WT)w;	2207	ANHE_w (timers [ev_active (w)]) = (WT)w;
1649	upheap (timers, timercnt - 1);	2208	ANHE_at_cache (timers [ev_active (w)]);
		2209	upheap (timers, ev_active (w));
1650		2210
		2211	EV_FREQUENT_CHECK;
		2212
1651	/*assert (("internal timer heap corruption", timers [((W)w)->active - 1] == w));*/	2213	/*assert (("internal timer heap corruption", timers [ev_active (w)] == (WT)w));*/
1652	}	2214	}
1653		2215
1654	void noinline	2216	void noinline
1655	ev_timer_stop (EV_P_ ev_timer *w)	2217	ev_timer_stop (EV_P_ ev_timer *w)
1656	{	2218	{
1657	clear_pending (EV_A_ (W)w);	2219	clear_pending (EV_A_ (W)w);
1658	if (expect_false (!ev_is_active (w)))	2220	if (expect_false (!ev_is_active (w)))
1659	return;	2221	return;
1660		2222
1661	assert (("internal timer heap corruption", timers [((W)w)->active - 1] == (WT)w));	2223	EV_FREQUENT_CHECK;
1662		2224
1663	{	2225	{
1664	int active = ((W)w)->active;	2226	int active = ev_active (w);
1665		2227
		2228	assert (("internal timer heap corruption", ANHE_w (timers [active]) == (WT)w));
		2229
		2230	--timercnt;
		2231
1666	if (expect_true (--active < --timercnt))	2232	if (expect_true (active < timercnt + HEAP0))
1667	{	2233	{
1668	timers [active] = timers [timercnt];	2234	timers [active] = timers [timercnt + HEAP0];
1669	adjustheap (timers, timercnt, active);	2235	adjustheap (timers, timercnt, active);
1670	}	2236	}
1671	}	2237	}
1672		2238
1673	((WT)w)->at -= mn_now;	2239	EV_FREQUENT_CHECK;
		2240
		2241	ev_at (w) -= mn_now;
1674		2242
1675	ev_stop (EV_A_ (W)w);	2243	ev_stop (EV_A_ (W)w);
1676	}	2244	}
1677		2245
1678	void noinline	2246	void noinline
1679	ev_timer_again (EV_P_ ev_timer *w)	2247	ev_timer_again (EV_P_ ev_timer *w)
1680	{	2248	{
		2249	EV_FREQUENT_CHECK;
		2250
1681	if (ev_is_active (w))	2251	if (ev_is_active (w))
1682	{	2252	{
1683	if (w->repeat)	2253	if (w->repeat)
1684	{	2254	{
1685	((WT)w)->at = mn_now + w->repeat;	2255	ev_at (w) = mn_now + w->repeat;
		2256	ANHE_at_cache (timers [ev_active (w)]);
1686	adjustheap (timers, timercnt, ((W)w)->active - 1);	2257	adjustheap (timers, timercnt, ev_active (w));
1687	}	2258	}
1688	else	2259	else
1689	ev_timer_stop (EV_A_ w);	2260	ev_timer_stop (EV_A_ w);
1690	}	2261	}
1691	else if (w->repeat)	2262	else if (w->repeat)
1692	{	2263	{
1693	w->at = w->repeat;	2264	ev_at (w) = w->repeat;
1694	ev_timer_start (EV_A_ w);	2265	ev_timer_start (EV_A_ w);
1695	}	2266	}
		2267
		2268	EV_FREQUENT_CHECK;
1696	}	2269	}
1697		2270
1698	#if EV_PERIODIC_ENABLE	2271	#if EV_PERIODIC_ENABLE
1699	void noinline	2272	void noinline
1700	ev_periodic_start (EV_P_ ev_periodic *w)	2273	ev_periodic_start (EV_P_ ev_periodic *w)
1701	{	2274	{
1702	if (expect_false (ev_is_active (w)))	2275	if (expect_false (ev_is_active (w)))
1703	return;	2276	return;
1704		2277
1705	if (w->reschedule_cb)	2278	if (w->reschedule_cb)
1706	((WT)w)->at = w->reschedule_cb (w, ev_rt_now);	2279	ev_at (w) = w->reschedule_cb (w, ev_rt_now);
1707	else if (w->interval)	2280	else if (w->interval)
1708	{	2281	{
1709	assert (("ev_periodic_start called with negative interval value", w->interval >= 0.));	2282	assert (("ev_periodic_start called with negative interval value", w->interval >= 0.));
1710	/* this formula differs from the one in periodic_reify because we do not always round up */	2283	/* this formula differs from the one in periodic_reify because we do not always round up */
1711	((WT)w)->at = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval;	2284	ev_at (w) = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval;
1712	}	2285	}
1713	else	2286	else
1714	((WT)w)->at = w->offset;	2287	ev_at (w) = w->offset;
1715		2288
		2289	EV_FREQUENT_CHECK;
		2290
		2291	++periodiccnt;
1716	ev_start (EV_A_ (W)w, ++periodiccnt);	2292	ev_start (EV_A_ (W)w, periodiccnt + HEAP0 - 1);
1717	array_needsize (WT, periodics, periodicmax, periodiccnt, EMPTY2);	2293	array_needsize (ANHE, periodics, periodicmax, ev_active (w) + 1, EMPTY2);
1718	periodics [periodiccnt - 1] = (WT)w;	2294	ANHE_w (periodics [ev_active (w)]) = (WT)w;
1719	upheap (periodics, periodiccnt - 1);	2295	ANHE_at_cache (periodics [ev_active (w)]);
		2296	upheap (periodics, ev_active (w));
1720		2297
		2298	EV_FREQUENT_CHECK;
		2299
1721	/*assert (("internal periodic heap corruption", periodics [((W)w)->active - 1] == w));*/	2300	/*assert (("internal periodic heap corruption", ANHE_w (periodics [ev_active (w)]) == (WT)w));*/
1722	}	2301	}
1723		2302
1724	void noinline	2303	void noinline
1725	ev_periodic_stop (EV_P_ ev_periodic *w)	2304	ev_periodic_stop (EV_P_ ev_periodic *w)
1726	{	2305	{
1727	clear_pending (EV_A_ (W)w);	2306	clear_pending (EV_A_ (W)w);
1728	if (expect_false (!ev_is_active (w)))	2307	if (expect_false (!ev_is_active (w)))
1729	return;	2308	return;
1730		2309
1731	assert (("internal periodic heap corruption", periodics [((W)w)->active - 1] == (WT)w));	2310	EV_FREQUENT_CHECK;
1732		2311
1733	{	2312	{
1734	int active = ((W)w)->active;	2313	int active = ev_active (w);
1735		2314
		2315	assert (("internal periodic heap corruption", ANHE_w (periodics [active]) == (WT)w));
		2316
		2317	--periodiccnt;
		2318
1736	if (expect_true (--active < --periodiccnt))	2319	if (expect_true (active < periodiccnt + HEAP0))
1737	{	2320	{
1738	periodics [active] = periodics [periodiccnt];	2321	periodics [active] = periodics [periodiccnt + HEAP0];
1739	adjustheap (periodics, periodiccnt, active);	2322	adjustheap (periodics, periodiccnt, active);
1740	}	2323	}
1741	}	2324	}
1742		2325
		2326	EV_FREQUENT_CHECK;
		2327
1743	ev_stop (EV_A_ (W)w);	2328	ev_stop (EV_A_ (W)w);
1744	}	2329	}
1745		2330
1746	void noinline	2331	void noinline
1747	ev_periodic_again (EV_P_ ev_periodic *w)	2332	ev_periodic_again (EV_P_ ev_periodic *w)
…		…
1764	#endif	2349	#endif
1765	if (expect_false (ev_is_active (w)))	2350	if (expect_false (ev_is_active (w)))
1766	return;	2351	return;
1767		2352
1768	assert (("ev_signal_start called with illegal signal number", w->signum > 0));	2353	assert (("ev_signal_start called with illegal signal number", w->signum > 0));
		2354
		2355	evpipe_init (EV_A);
		2356
		2357	EV_FREQUENT_CHECK;
1769		2358
1770	{	2359	{
1771	#ifndef _WIN32	2360	#ifndef _WIN32
1772	sigset_t full, prev;	2361	sigset_t full, prev;
1773	sigfillset (&full);	2362	sigfillset (&full);
1774	sigprocmask (SIG_SETMASK, &full, &prev);	2363	sigprocmask (SIG_SETMASK, &full, &prev);
1775	#endif	2364	#endif
1776		2365
1777	array_needsize (ANSIG, signals, signalmax, w->signum, signals_init);	2366	array_needsize (ANSIG, signals, signalmax, w->signum, array_init_zero);
1778		2367
1779	#ifndef _WIN32	2368	#ifndef _WIN32
1780	sigprocmask (SIG_SETMASK, &prev, 0);	2369	sigprocmask (SIG_SETMASK, &prev, 0);
1781	#endif	2370	#endif
1782	}	2371	}
…		…
1785	wlist_add (&signals [w->signum - 1].head, (WL)w);	2374	wlist_add (&signals [w->signum - 1].head, (WL)w);
1786		2375
1787	if (!((WL)w)->next)	2376	if (!((WL)w)->next)
1788	{	2377	{
1789	#if _WIN32	2378	#if _WIN32
1790	signal (w->signum, sighandler);	2379	signal (w->signum, ev_sighandler);
1791	#else	2380	#else
1792	struct sigaction sa;	2381	struct sigaction sa;
1793	sa.sa_handler = sighandler;	2382	sa.sa_handler = ev_sighandler;
1794	sigfillset (&sa.sa_mask);	2383	sigfillset (&sa.sa_mask);
1795	sa.sa_flags = SA_RESTART; /* if restarting works we save one iteration */	2384	sa.sa_flags = SA_RESTART; /* if restarting works we save one iteration */
1796	sigaction (w->signum, &sa, 0);	2385	sigaction (w->signum, &sa, 0);
1797	#endif	2386	#endif
1798	}	2387	}
		2388
		2389	EV_FREQUENT_CHECK;
1799	}	2390	}
1800		2391
1801	void noinline	2392	void noinline
1802	ev_signal_stop (EV_P_ ev_signal *w)	2393	ev_signal_stop (EV_P_ ev_signal *w)
1803	{	2394	{
1804	clear_pending (EV_A_ (W)w);	2395	clear_pending (EV_A_ (W)w);
1805	if (expect_false (!ev_is_active (w)))	2396	if (expect_false (!ev_is_active (w)))
1806	return;	2397	return;
1807		2398
		2399	EV_FREQUENT_CHECK;
		2400
1808	wlist_del (&signals [w->signum - 1].head, (WL)w);	2401	wlist_del (&signals [w->signum - 1].head, (WL)w);
1809	ev_stop (EV_A_ (W)w);	2402	ev_stop (EV_A_ (W)w);
1810		2403
1811	if (!signals [w->signum - 1].head)	2404	if (!signals [w->signum - 1].head)
1812	signal (w->signum, SIG_DFL);	2405	signal (w->signum, SIG_DFL);
		2406
		2407	EV_FREQUENT_CHECK;
1813	}	2408	}
1814		2409
1815	void	2410	void
1816	ev_child_start (EV_P_ ev_child *w)	2411	ev_child_start (EV_P_ ev_child *w)
1817	{	2412	{
…		…
1819	assert (("child watchers are only supported in the default loop", loop == ev_default_loop_ptr));	2414	assert (("child watchers are only supported in the default loop", loop == ev_default_loop_ptr));
1820	#endif	2415	#endif
1821	if (expect_false (ev_is_active (w)))	2416	if (expect_false (ev_is_active (w)))
1822	return;	2417	return;
1823		2418
		2419	EV_FREQUENT_CHECK;
		2420
1824	ev_start (EV_A_ (W)w, 1);	2421	ev_start (EV_A_ (W)w, 1);
1825	wlist_add (&childs [w->pid & (EV_PID_HASHSIZE - 1)], (WL)w);	2422	wlist_add (&childs [w->pid & (EV_PID_HASHSIZE - 1)], (WL)w);
		2423
		2424	EV_FREQUENT_CHECK;
1826	}	2425	}
1827		2426
1828	void	2427	void
1829	ev_child_stop (EV_P_ ev_child *w)	2428	ev_child_stop (EV_P_ ev_child *w)
1830	{	2429	{
1831	clear_pending (EV_A_ (W)w);	2430	clear_pending (EV_A_ (W)w);
1832	if (expect_false (!ev_is_active (w)))	2431	if (expect_false (!ev_is_active (w)))
1833	return;	2432	return;
1834		2433
		2434	EV_FREQUENT_CHECK;
		2435
1835	wlist_del (&childs [w->pid & (EV_PID_HASHSIZE - 1)], (WL)w);	2436	wlist_del (&childs [w->pid & (EV_PID_HASHSIZE - 1)], (WL)w);
1836	ev_stop (EV_A_ (W)w);	2437	ev_stop (EV_A_ (W)w);
		2438
		2439	EV_FREQUENT_CHECK;
1837	}	2440	}
1838		2441
1839	#if EV_STAT_ENABLE	2442	#if EV_STAT_ENABLE
1840		2443
1841	# ifdef _WIN32	2444	# ifdef _WIN32
1842	# undef lstat	2445	# undef lstat
1843	# define lstat(a,b) _stati64 (a,b)	2446	# define lstat(a,b) _stati64 (a,b)
1844	# endif	2447	# endif
1845		2448
1846	#define DEF_STAT_INTERVAL 5.0074891	2449	#define DEF_STAT_INTERVAL 5.0074891
		2450	#define NFS_STAT_INTERVAL 30.1074891 /* for filesystems potentially failing inotify */
1847	#define MIN_STAT_INTERVAL 0.1074891	2451	#define MIN_STAT_INTERVAL 0.1074891
1848		2452
1849	static void noinline stat_timer_cb (EV_P_ ev_timer *w_, int revents);	2453	static void noinline stat_timer_cb (EV_P_ ev_timer *w_, int revents);
1850		2454
1851	#if EV_USE_INOTIFY	2455	#if EV_USE_INOTIFY
1852	# define EV_INOTIFY_BUFSIZE 8192	2456	# define EV_INOTIFY_BUFSIZE 8192
…		…
1856	{	2460	{
1857	w->wd = inotify_add_watch (fs_fd, w->path, IN_ATTRIB | IN_DELETE_SELF | IN_MOVE_SELF | IN_MODIFY | IN_DONT_FOLLOW | IN_MASK_ADD);	2461	w->wd = inotify_add_watch (fs_fd, w->path, IN_ATTRIB | IN_DELETE_SELF | IN_MOVE_SELF | IN_MODIFY | IN_DONT_FOLLOW | IN_MASK_ADD);
1858		2462
1859	if (w->wd < 0)	2463	if (w->wd < 0)
1860	{	2464	{
		2465	w->timer.repeat = w->interval ? w->interval : DEF_STAT_INTERVAL;
1861	ev_timer_start (EV_A_ &w->timer); /* this is not race-free, so we still need to recheck periodically */	2466	ev_timer_again (EV_A_ &w->timer); /* this is not race-free, so we still need to recheck periodically */
1862		2467
1863	/* monitor some parent directory for speedup hints */	2468	/* monitor some parent directory for speedup hints */
		2469	/* note that exceeding the hardcoded path limit is not a correctness issue, */
		2470	/* but an efficiency issue only */
1864	if ((errno == ENOENT || errno == EACCES) && strlen (w->path) < 4096)	2471	if ((errno == ENOENT || errno == EACCES) && strlen (w->path) < 4096)
1865	{	2472	{
1866	char path [4096];	2473	char path [4096];
1867	strcpy (path, w->path);	2474	strcpy (path, w->path);
1868		2475
…		…
1871	int mask = IN_MASK_ADD | IN_DELETE_SELF | IN_MOVE_SELF	2478	int mask = IN_MASK_ADD | IN_DELETE_SELF | IN_MOVE_SELF
1872	| (errno == EACCES ? IN_ATTRIB : IN_CREATE | IN_MOVED_TO);	2479	| (errno == EACCES ? IN_ATTRIB : IN_CREATE | IN_MOVED_TO);
1873		2480
1874	char *pend = strrchr (path, '/');	2481	char *pend = strrchr (path, '/');
1875		2482
1876	if (!pend)	2483	if (!pend || pend == path)
1877	break; /* whoops, no '/', complain to your admin */	2484	break;
1878		2485
1879	*pend = 0;	2486	*pend = 0;
1880	w->wd = inotify_add_watch (fs_fd, path, mask);	2487	w->wd = inotify_add_watch (fs_fd, path, mask);
1881	}	2488	}
1882	while (w->wd < 0 && (errno == ENOENT || errno == EACCES));	2489	while (w->wd < 0 && (errno == ENOENT || errno == EACCES));
1883	}	2490	}
1884	}	2491	}
1885	else
1886	ev_timer_stop (EV_A_ &w->timer); /* we can watch this in a race-free way */
1887		2492
1888	if (w->wd >= 0)	2493	if (w->wd >= 0)
		2494	{
1889	wlist_add (&fs_hash [w->wd & (EV_INOTIFY_HASHSIZE - 1)].head, (WL)w);	2495	wlist_add (&fs_hash [w->wd & (EV_INOTIFY_HASHSIZE - 1)].head, (WL)w);
		2496
		2497	/* now local changes will be tracked by inotify, but remote changes won't */
		2498	/* unless the filesystem it known to be local, we therefore still poll */
		2499	/* also do poll on <2.6.25, but with normal frequency */
		2500	struct statfs sfs;
		2501
		2502	if (fs_2625 && !statfs (w->path, &sfs))
		2503	if (sfs.f_type == 0x1373 /* devfs */
		2504	|| sfs.f_type == 0xEF53 /* ext2/3 */
		2505	|| sfs.f_type == 0x3153464a /* jfs */
		2506	|| sfs.f_type == 0x52654973 /* reiser3 */
		2507	|| sfs.f_type == 0x01021994 /* tempfs */
		2508	|| sfs.f_type == 0x58465342 /* xfs */)
		2509	return;
		2510
		2511	w->timer.repeat = w->interval ? w->interval : fs_2625 ? NFS_STAT_INTERVAL : DEF_STAT_INTERVAL;
		2512	ev_timer_again (EV_A_ &w->timer);
		2513	}
1890	}	2514	}
1891		2515
1892	static void noinline	2516	static void noinline
1893	infy_del (EV_P_ ev_stat *w)	2517	infy_del (EV_P_ ev_stat *w)
1894	{	2518	{
…		…
1908		2532
1909	static void noinline	2533	static void noinline
1910	infy_wd (EV_P_ int slot, int wd, struct inotify_event *ev)	2534	infy_wd (EV_P_ int slot, int wd, struct inotify_event *ev)
1911	{	2535	{
1912	if (slot < 0)	2536	if (slot < 0)
1913	/* overflow, need to check for all hahs slots */	2537	/* overflow, need to check for all hash slots */
1914	for (slot = 0; slot < EV_INOTIFY_HASHSIZE; ++slot)	2538	for (slot = 0; slot < EV_INOTIFY_HASHSIZE; ++slot)
1915	infy_wd (EV_A_ slot, wd, ev);	2539	infy_wd (EV_A_ slot, wd, ev);
1916	else	2540	else
1917	{	2541	{
1918	WL w_;	2542	WL w_;
…		…
1924		2548
1925	if (w->wd == wd || wd == -1)	2549	if (w->wd == wd || wd == -1)
1926	{	2550	{
1927	if (ev->mask & (IN_IGNORED | IN_UNMOUNT | IN_DELETE_SELF))	2551	if (ev->mask & (IN_IGNORED | IN_UNMOUNT | IN_DELETE_SELF))
1928	{	2552	{
		2553	wlist_del (&fs_hash [slot & (EV_INOTIFY_HASHSIZE - 1)].head, (WL)w);
1929	w->wd = -1;	2554	w->wd = -1;
1930	infy_add (EV_A_ w); /* re-add, no matter what */	2555	infy_add (EV_A_ w); /* re-add, no matter what */
1931	}	2556	}
1932		2557
1933	stat_timer_cb (EV_A_ &w->timer, 0);	2558	stat_timer_cb (EV_A_ &w->timer, 0);
…		…
1947	for (ofs = 0; ofs < len; ofs += sizeof (struct inotify_event) + ev->len)	2572	for (ofs = 0; ofs < len; ofs += sizeof (struct inotify_event) + ev->len)
1948	infy_wd (EV_A_ ev->wd, ev->wd, ev);	2573	infy_wd (EV_A_ ev->wd, ev->wd, ev);
1949	}	2574	}
1950		2575
1951	void inline_size	2576	void inline_size
		2577	check_2625 (EV_P)
		2578	{
		2579	/* kernels < 2.6.25 are borked
		2580	* http://www.ussg.indiana.edu/hypermail/linux/kernel/0711.3/1208.html
		2581	*/
		2582	struct utsname buf;
		2583	int major, minor, micro;
		2584
		2585	if (uname (&buf))
		2586	return;
		2587
		2588	if (sscanf (buf.release, "%d.%d.%d", &major, &minor, &micro) != 3)
		2589	return;
		2590
		2591	if (major < 2
		2592	|| (major == 2 && minor < 6)
		2593	|| (major == 2 && minor == 6 && micro < 25))
		2594	return;
		2595
		2596	fs_2625 = 1;
		2597	}
		2598
		2599	void inline_size
1952	infy_init (EV_P)	2600	infy_init (EV_P)
1953	{	2601	{
1954	if (fs_fd != -2)	2602	if (fs_fd != -2)
1955	return;	2603	return;
		2604
		2605	fs_fd = -1;
		2606
		2607	check_2625 (EV_A);
1956		2608
1957	fs_fd = inotify_init ();	2609	fs_fd = inotify_init ();
1958		2610
1959	if (fs_fd >= 0)	2611	if (fs_fd >= 0)
1960	{	2612	{
…		…
1988	w->wd = -1;	2640	w->wd = -1;
1989		2641
1990	if (fs_fd >= 0)	2642	if (fs_fd >= 0)
1991	infy_add (EV_A_ w); /* re-add, no matter what */	2643	infy_add (EV_A_ w); /* re-add, no matter what */
1992	else	2644	else
1993	ev_timer_start (EV_A_ &w->timer);	2645	ev_timer_again (EV_A_ &w->timer);
1994	}	2646	}
1995
1996	}	2647	}
1997	}	2648	}
1998		2649
		2650	#endif
		2651
		2652	#ifdef _WIN32
		2653	# define EV_LSTAT(p,b) _stati64 (p, b)
		2654	#else
		2655	# define EV_LSTAT(p,b) lstat (p, b)
1999	#endif	2656	#endif
2000		2657
2001	void	2658	void
2002	ev_stat_stat (EV_P_ ev_stat *w)	2659	ev_stat_stat (EV_P_ ev_stat *w)
2003	{	2660	{
…		…
2030	|| w->prev.st_atime != w->attr.st_atime	2687	|| w->prev.st_atime != w->attr.st_atime
2031	|| w->prev.st_mtime != w->attr.st_mtime	2688	|| w->prev.st_mtime != w->attr.st_mtime
2032	|| w->prev.st_ctime != w->attr.st_ctime	2689	|| w->prev.st_ctime != w->attr.st_ctime
2033	) {	2690	) {
2034	#if EV_USE_INOTIFY	2691	#if EV_USE_INOTIFY
		2692	if (fs_fd >= 0)
		2693	{
2035	infy_del (EV_A_ w);	2694	infy_del (EV_A_ w);
2036	infy_add (EV_A_ w);	2695	infy_add (EV_A_ w);
2037	ev_stat_stat (EV_A_ w); /* avoid race... */	2696	ev_stat_stat (EV_A_ w); /* avoid race... */
		2697	}
2038	#endif	2698	#endif
2039		2699
2040	ev_feed_event (EV_A_ w, EV_STAT);	2700	ev_feed_event (EV_A_ w, EV_STAT);
2041	}	2701	}
2042	}	2702	}
…		…
2045	ev_stat_start (EV_P_ ev_stat *w)	2705	ev_stat_start (EV_P_ ev_stat *w)
2046	{	2706	{
2047	if (expect_false (ev_is_active (w)))	2707	if (expect_false (ev_is_active (w)))
2048	return;	2708	return;
2049		2709
2050	/* since we use memcmp, we need to clear any padding data etc. */
2051	memset (&w->prev, 0, sizeof (ev_statdata));
2052	memset (&w->attr, 0, sizeof (ev_statdata));
2053
2054	ev_stat_stat (EV_A_ w);	2710	ev_stat_stat (EV_A_ w);
2055		2711
		2712	if (w->interval < MIN_STAT_INTERVAL && w->interval)
2056	if (w->interval < MIN_STAT_INTERVAL)	2713	w->interval = MIN_STAT_INTERVAL;
2057	w->interval = w->interval ? MIN_STAT_INTERVAL : DEF_STAT_INTERVAL;
2058		2714
2059	ev_timer_init (&w->timer, stat_timer_cb, w->interval, w->interval);	2715	ev_timer_init (&w->timer, stat_timer_cb, 0., w->interval ? w->interval : DEF_STAT_INTERVAL);
2060	ev_set_priority (&w->timer, ev_priority (w));	2716	ev_set_priority (&w->timer, ev_priority (w));
2061		2717
2062	#if EV_USE_INOTIFY	2718	#if EV_USE_INOTIFY
2063	infy_init (EV_A);	2719	infy_init (EV_A);
2064		2720
2065	if (fs_fd >= 0)	2721	if (fs_fd >= 0)
2066	infy_add (EV_A_ w);	2722	infy_add (EV_A_ w);
2067	else	2723	else
2068	#endif	2724	#endif
2069	ev_timer_start (EV_A_ &w->timer);	2725	ev_timer_again (EV_A_ &w->timer);
2070		2726
2071	ev_start (EV_A_ (W)w, 1);	2727	ev_start (EV_A_ (W)w, 1);
		2728
		2729	EV_FREQUENT_CHECK;
2072	}	2730	}
2073		2731
2074	void	2732	void
2075	ev_stat_stop (EV_P_ ev_stat *w)	2733	ev_stat_stop (EV_P_ ev_stat *w)
2076	{	2734	{
2077	clear_pending (EV_A_ (W)w);	2735	clear_pending (EV_A_ (W)w);
2078	if (expect_false (!ev_is_active (w)))	2736	if (expect_false (!ev_is_active (w)))
2079	return;	2737	return;
2080		2738
		2739	EV_FREQUENT_CHECK;
		2740
2081	#if EV_USE_INOTIFY	2741	#if EV_USE_INOTIFY
2082	infy_del (EV_A_ w);	2742	infy_del (EV_A_ w);
2083	#endif	2743	#endif
2084	ev_timer_stop (EV_A_ &w->timer);	2744	ev_timer_stop (EV_A_ &w->timer);
2085		2745
2086	ev_stop (EV_A_ (W)w);	2746	ev_stop (EV_A_ (W)w);
		2747
		2748	EV_FREQUENT_CHECK;
2087	}	2749	}
2088	#endif	2750	#endif
2089		2751
2090	#if EV_IDLE_ENABLE	2752	#if EV_IDLE_ENABLE
2091	void	2753	void
…		…
2093	{	2755	{
2094	if (expect_false (ev_is_active (w)))	2756	if (expect_false (ev_is_active (w)))
2095	return;	2757	return;
2096		2758
2097	pri_adjust (EV_A_ (W)w);	2759	pri_adjust (EV_A_ (W)w);
		2760
		2761	EV_FREQUENT_CHECK;
2098		2762
2099	{	2763	{
2100	int active = ++idlecnt [ABSPRI (w)];	2764	int active = ++idlecnt [ABSPRI (w)];
2101		2765
2102	++idleall;	2766	++idleall;
2103	ev_start (EV_A_ (W)w, active);	2767	ev_start (EV_A_ (W)w, active);
2104		2768
2105	array_needsize (ev_idle *, idles [ABSPRI (w)], idlemax [ABSPRI (w)], active, EMPTY2);	2769	array_needsize (ev_idle *, idles [ABSPRI (w)], idlemax [ABSPRI (w)], active, EMPTY2);
2106	idles [ABSPRI (w)][active - 1] = w;	2770	idles [ABSPRI (w)][active - 1] = w;
2107	}	2771	}
		2772
		2773	EV_FREQUENT_CHECK;
2108	}	2774	}
2109		2775
2110	void	2776	void
2111	ev_idle_stop (EV_P_ ev_idle *w)	2777	ev_idle_stop (EV_P_ ev_idle *w)
2112	{	2778	{
2113	clear_pending (EV_A_ (W)w);	2779	clear_pending (EV_A_ (W)w);
2114	if (expect_false (!ev_is_active (w)))	2780	if (expect_false (!ev_is_active (w)))
2115	return;	2781	return;
2116		2782
		2783	EV_FREQUENT_CHECK;
		2784
2117	{	2785	{
2118	int active = ((W)w)->active;	2786	int active = ev_active (w);
2119		2787
2120	idles [ABSPRI (w)][active - 1] = idles [ABSPRI (w)][--idlecnt [ABSPRI (w)]];	2788	idles [ABSPRI (w)][active - 1] = idles [ABSPRI (w)][--idlecnt [ABSPRI (w)]];
2121	((W)idles [ABSPRI (w)][active - 1])->active = active;	2789	ev_active (idles [ABSPRI (w)][active - 1]) = active;
2122		2790
2123	ev_stop (EV_A_ (W)w);	2791	ev_stop (EV_A_ (W)w);
2124	--idleall;	2792	--idleall;
2125	}	2793	}
		2794
		2795	EV_FREQUENT_CHECK;
2126	}	2796	}
2127	#endif	2797	#endif
2128		2798
2129	void	2799	void
2130	ev_prepare_start (EV_P_ ev_prepare *w)	2800	ev_prepare_start (EV_P_ ev_prepare *w)
2131	{	2801	{
2132	if (expect_false (ev_is_active (w)))	2802	if (expect_false (ev_is_active (w)))
2133	return;	2803	return;
		2804
		2805	EV_FREQUENT_CHECK;
2134		2806
2135	ev_start (EV_A_ (W)w, ++preparecnt);	2807	ev_start (EV_A_ (W)w, ++preparecnt);
2136	array_needsize (ev_prepare *, prepares, preparemax, preparecnt, EMPTY2);	2808	array_needsize (ev_prepare *, prepares, preparemax, preparecnt, EMPTY2);
2137	prepares [preparecnt - 1] = w;	2809	prepares [preparecnt - 1] = w;
		2810
		2811	EV_FREQUENT_CHECK;
2138	}	2812	}
2139		2813
2140	void	2814	void
2141	ev_prepare_stop (EV_P_ ev_prepare *w)	2815	ev_prepare_stop (EV_P_ ev_prepare *w)
2142	{	2816	{
2143	clear_pending (EV_A_ (W)w);	2817	clear_pending (EV_A_ (W)w);
2144	if (expect_false (!ev_is_active (w)))	2818	if (expect_false (!ev_is_active (w)))
2145	return;	2819	return;
2146		2820
		2821	EV_FREQUENT_CHECK;
		2822
2147	{	2823	{
2148	int active = ((W)w)->active;	2824	int active = ev_active (w);
		2825
2149	prepares [active - 1] = prepares [--preparecnt];	2826	prepares [active - 1] = prepares [--preparecnt];
2150	((W)prepares [active - 1])->active = active;	2827	ev_active (prepares [active - 1]) = active;
2151	}	2828	}
2152		2829
2153	ev_stop (EV_A_ (W)w);	2830	ev_stop (EV_A_ (W)w);
		2831
		2832	EV_FREQUENT_CHECK;
2154	}	2833	}
2155		2834
2156	void	2835	void
2157	ev_check_start (EV_P_ ev_check *w)	2836	ev_check_start (EV_P_ ev_check *w)
2158	{	2837	{
2159	if (expect_false (ev_is_active (w)))	2838	if (expect_false (ev_is_active (w)))
2160	return;	2839	return;
		2840
		2841	EV_FREQUENT_CHECK;
2161		2842
2162	ev_start (EV_A_ (W)w, ++checkcnt);	2843	ev_start (EV_A_ (W)w, ++checkcnt);
2163	array_needsize (ev_check *, checks, checkmax, checkcnt, EMPTY2);	2844	array_needsize (ev_check *, checks, checkmax, checkcnt, EMPTY2);
2164	checks [checkcnt - 1] = w;	2845	checks [checkcnt - 1] = w;
		2846
		2847	EV_FREQUENT_CHECK;
2165	}	2848	}
2166		2849
2167	void	2850	void
2168	ev_check_stop (EV_P_ ev_check *w)	2851	ev_check_stop (EV_P_ ev_check *w)
2169	{	2852	{
2170	clear_pending (EV_A_ (W)w);	2853	clear_pending (EV_A_ (W)w);
2171	if (expect_false (!ev_is_active (w)))	2854	if (expect_false (!ev_is_active (w)))
2172	return;	2855	return;
2173		2856
		2857	EV_FREQUENT_CHECK;
		2858
2174	{	2859	{
2175	int active = ((W)w)->active;	2860	int active = ev_active (w);
		2861
2176	checks [active - 1] = checks [--checkcnt];	2862	checks [active - 1] = checks [--checkcnt];
2177	((W)checks [active - 1])->active = active;	2863	ev_active (checks [active - 1]) = active;
2178	}	2864	}
2179		2865
2180	ev_stop (EV_A_ (W)w);	2866	ev_stop (EV_A_ (W)w);
		2867
		2868	EV_FREQUENT_CHECK;
2181	}	2869	}
2182		2870
2183	#if EV_EMBED_ENABLE	2871	#if EV_EMBED_ENABLE
2184	void noinline	2872	void noinline
2185	ev_embed_sweep (EV_P_ ev_embed *w)	2873	ev_embed_sweep (EV_P_ ev_embed *w)
…		…
2193	ev_embed *w = (ev_embed *)(((char *)io) - offsetof (ev_embed, io));	2881	ev_embed *w = (ev_embed *)(((char *)io) - offsetof (ev_embed, io));
2194		2882
2195	if (ev_cb (w))	2883	if (ev_cb (w))
2196	ev_feed_event (EV_A_ (W)w, EV_EMBED);	2884	ev_feed_event (EV_A_ (W)w, EV_EMBED);
2197	else	2885	else
2198	ev_embed_sweep (loop, w);	2886	ev_loop (w->other, EVLOOP_NONBLOCK);
2199	}	2887	}
2200		2888
2201	static void	2889	static void
2202	embed_prepare_cb (EV_P_ ev_prepare *prepare, int revents)	2890	embed_prepare_cb (EV_P_ ev_prepare *prepare, int revents)
2203	{	2891	{
2204	ev_embed *w = (ev_embed *)(((char *)prepare) - offsetof (ev_embed, prepare));	2892	ev_embed *w = (ev_embed *)(((char *)prepare) - offsetof (ev_embed, prepare));
2205		2893
2206	fd_reify (w->other);	2894	{
		2895	struct ev_loop *loop = w->other;
		2896
		2897	while (fdchangecnt)
		2898	{
		2899	fd_reify (EV_A);
		2900	ev_loop (EV_A_ EVLOOP_NONBLOCK);
		2901	}
		2902	}
2207	}	2903	}
		2904
		2905	static void
		2906	embed_fork_cb (EV_P_ ev_fork *fork_w, int revents)
		2907	{
		2908	ev_embed *w = (ev_embed *)(((char *)fork_w) - offsetof (ev_embed, fork));
		2909
		2910	{
		2911	struct ev_loop *loop = w->other;
		2912
		2913	ev_loop_fork (EV_A);
		2914	}
		2915	}
		2916
		2917	#if 0
		2918	static void
		2919	embed_idle_cb (EV_P_ ev_idle *idle, int revents)
		2920	{
		2921	ev_idle_stop (EV_A_ idle);
		2922	}
		2923	#endif
2208		2924
2209	void	2925	void
2210	ev_embed_start (EV_P_ ev_embed *w)	2926	ev_embed_start (EV_P_ ev_embed *w)
2211	{	2927	{
2212	if (expect_false (ev_is_active (w)))	2928	if (expect_false (ev_is_active (w)))
2213	return;	2929	return;
2214		2930
2215	{	2931	{
2216	struct ev_loop *loop = w->other;	2932	struct ev_loop *loop = w->other;
2217	assert (("loop to be embedded is not embeddable", backend & ev_embeddable_backends ()));	2933	assert (("loop to be embedded is not embeddable", backend & ev_embeddable_backends ()));
2218	ev_io_init (&w->io, embed_io_cb, backend_fd, EV_WRITE);	2934	ev_io_init (&w->io, embed_io_cb, backend_fd, EV_READ);
2219	}	2935	}
		2936
		2937	EV_FREQUENT_CHECK;
2220		2938
2221	ev_set_priority (&w->io, ev_priority (w));	2939	ev_set_priority (&w->io, ev_priority (w));
2222	ev_io_start (EV_A_ &w->io);	2940	ev_io_start (EV_A_ &w->io);
2223		2941
2224	ev_prepare_init (&w->prepare, embed_prepare_cb);	2942	ev_prepare_init (&w->prepare, embed_prepare_cb);
2225	ev_set_priority (&w->prepare, EV_MINPRI);	2943	ev_set_priority (&w->prepare, EV_MINPRI);
2226	ev_prepare_start (EV_A_ &w->prepare);	2944	ev_prepare_start (EV_A_ &w->prepare);
2227		2945
		2946	ev_fork_init (&w->fork, embed_fork_cb);
		2947	ev_fork_start (EV_A_ &w->fork);
		2948
		2949	/*ev_idle_init (&w->idle, e,bed_idle_cb);*/
		2950
2228	ev_start (EV_A_ (W)w, 1);	2951	ev_start (EV_A_ (W)w, 1);
		2952
		2953	EV_FREQUENT_CHECK;
2229	}	2954	}
2230		2955
2231	void	2956	void
2232	ev_embed_stop (EV_P_ ev_embed *w)	2957	ev_embed_stop (EV_P_ ev_embed *w)
2233	{	2958	{
2234	clear_pending (EV_A_ (W)w);	2959	clear_pending (EV_A_ (W)w);
2235	if (expect_false (!ev_is_active (w)))	2960	if (expect_false (!ev_is_active (w)))
2236	return;	2961	return;
2237		2962
		2963	EV_FREQUENT_CHECK;
		2964
2238	ev_io_stop (EV_A_ &w->io);	2965	ev_io_stop (EV_A_ &w->io);
2239	ev_prepare_stop (EV_A_ &w->prepare);	2966	ev_prepare_stop (EV_A_ &w->prepare);
		2967	ev_fork_stop (EV_A_ &w->fork);
2240		2968
2241	ev_stop (EV_A_ (W)w);	2969	EV_FREQUENT_CHECK;
2242	}	2970	}
2243	#endif	2971	#endif
2244		2972
2245	#if EV_FORK_ENABLE	2973	#if EV_FORK_ENABLE
2246	void	2974	void
2247	ev_fork_start (EV_P_ ev_fork *w)	2975	ev_fork_start (EV_P_ ev_fork *w)
2248	{	2976	{
2249	if (expect_false (ev_is_active (w)))	2977	if (expect_false (ev_is_active (w)))
2250	return;	2978	return;
		2979
		2980	EV_FREQUENT_CHECK;
2251		2981
2252	ev_start (EV_A_ (W)w, ++forkcnt);	2982	ev_start (EV_A_ (W)w, ++forkcnt);
2253	array_needsize (ev_fork *, forks, forkmax, forkcnt, EMPTY2);	2983	array_needsize (ev_fork *, forks, forkmax, forkcnt, EMPTY2);
2254	forks [forkcnt - 1] = w;	2984	forks [forkcnt - 1] = w;
		2985
		2986	EV_FREQUENT_CHECK;
2255	}	2987	}
2256		2988
2257	void	2989	void
2258	ev_fork_stop (EV_P_ ev_fork *w)	2990	ev_fork_stop (EV_P_ ev_fork *w)
2259	{	2991	{
2260	clear_pending (EV_A_ (W)w);	2992	clear_pending (EV_A_ (W)w);
2261	if (expect_false (!ev_is_active (w)))	2993	if (expect_false (!ev_is_active (w)))
2262	return;	2994	return;
2263		2995
		2996	EV_FREQUENT_CHECK;
		2997
2264	{	2998	{
2265	int active = ((W)w)->active;	2999	int active = ev_active (w);
		3000
2266	forks [active - 1] = forks [--forkcnt];	3001	forks [active - 1] = forks [--forkcnt];
2267	((W)forks [active - 1])->active = active;	3002	ev_active (forks [active - 1]) = active;
2268	}	3003	}
2269		3004
2270	ev_stop (EV_A_ (W)w);	3005	ev_stop (EV_A_ (W)w);
		3006
		3007	EV_FREQUENT_CHECK;
		3008	}
		3009	#endif
		3010
		3011	#if EV_ASYNC_ENABLE
		3012	void
		3013	ev_async_start (EV_P_ ev_async *w)
		3014	{
		3015	if (expect_false (ev_is_active (w)))
		3016	return;
		3017
		3018	evpipe_init (EV_A);
		3019
		3020	EV_FREQUENT_CHECK;
		3021
		3022	ev_start (EV_A_ (W)w, ++asynccnt);
		3023	array_needsize (ev_async *, asyncs, asyncmax, asynccnt, EMPTY2);
		3024	asyncs [asynccnt - 1] = w;
		3025
		3026	EV_FREQUENT_CHECK;
		3027	}
		3028
		3029	void
		3030	ev_async_stop (EV_P_ ev_async *w)
		3031	{
		3032	clear_pending (EV_A_ (W)w);
		3033	if (expect_false (!ev_is_active (w)))
		3034	return;
		3035
		3036	EV_FREQUENT_CHECK;
		3037
		3038	{
		3039	int active = ev_active (w);
		3040
		3041	asyncs [active - 1] = asyncs [--asynccnt];
		3042	ev_active (asyncs [active - 1]) = active;
		3043	}
		3044
		3045	ev_stop (EV_A_ (W)w);
		3046
		3047	EV_FREQUENT_CHECK;
		3048	}
		3049
		3050	void
		3051	ev_async_send (EV_P_ ev_async *w)
		3052	{
		3053	w->sent = 1;
		3054	evpipe_write (EV_A_ &gotasync);
2271	}	3055	}
2272	#endif	3056	#endif
2273		3057
2274	/*****************************************************************************/	3058	/*****************************************************************************/
2275		3059
…		…
2285	once_cb (EV_P_ struct ev_once *once, int revents)	3069	once_cb (EV_P_ struct ev_once *once, int revents)
2286	{	3070	{
2287	void (*cb)(int revents, void *arg) = once->cb;	3071	void (*cb)(int revents, void *arg) = once->cb;
2288	void *arg = once->arg;	3072	void *arg = once->arg;
2289		3073
2290	ev_io_stop (EV_A_ &once->io);	3074	ev_io_stop (EV_A_ &once->io);
2291	ev_timer_stop (EV_A_ &once->to);	3075	ev_timer_stop (EV_A_ &once->to);
2292	ev_free (once);	3076	ev_free (once);
2293		3077
2294	cb (revents, arg);	3078	cb (revents, arg);
2295	}	3079	}
2296		3080
2297	static void	3081	static void
2298	once_cb_io (EV_P_ ev_io *w, int revents)	3082	once_cb_io (EV_P_ ev_io *w, int revents)
2299	{	3083	{
2300	once_cb (EV_A_ (struct ev_once *)(((char *)w) - offsetof (struct ev_once, io)), revents);	3084	struct ev_once *once = (struct ev_once *)(((char *)w) - offsetof (struct ev_once, io));
		3085
		3086	once_cb (EV_A_ once, revents | ev_clear_pending (EV_A_ &once->to));
2301	}	3087	}
2302		3088
2303	static void	3089	static void
2304	once_cb_to (EV_P_ ev_timer *w, int revents)	3090	once_cb_to (EV_P_ ev_timer *w, int revents)
2305	{	3091	{
2306	once_cb (EV_A_ (struct ev_once *)(((char *)w) - offsetof (struct ev_once, to)), revents);	3092	struct ev_once *once = (struct ev_once *)(((char *)w) - offsetof (struct ev_once, to));
		3093
		3094	once_cb (EV_A_ once, revents | ev_clear_pending (EV_A_ &once->io));
2307	}	3095	}
2308		3096
2309	void	3097	void
2310	ev_once (EV_P_ int fd, int events, ev_tstamp timeout, void (*cb)(int revents, void *arg), void *arg)	3098	ev_once (EV_P_ int fd, int events, ev_tstamp timeout, void (*cb)(int revents, void *arg), void *arg)
2311	{	3099	{

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