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Comparing libev/ev.c (file contents):
Revision 1.185 by root, Fri Dec 14 18:22:30 2007 UTC vs.
Revision 1.268 by root, Mon Oct 27 13:39:18 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"
…		…
51	# ifndef EV_USE_MONOTONIC	60	# ifndef EV_USE_MONOTONIC
52	# define EV_USE_MONOTONIC 0	61	# define EV_USE_MONOTONIC 0
53	# endif	62	# endif
54	# ifndef EV_USE_REALTIME	63	# ifndef EV_USE_REALTIME
55	# define EV_USE_REALTIME 0	64	# define EV_USE_REALTIME 0
		65	# endif
		66	# endif
		67
		68	# ifndef EV_USE_NANOSLEEP
		69	# if HAVE_NANOSLEEP
		70	# define EV_USE_NANOSLEEP 1
		71	# else
		72	# define EV_USE_NANOSLEEP 0
56	# endif	73	# endif
57	# endif	74	# endif
58		75
59	# ifndef EV_USE_SELECT	76	# ifndef EV_USE_SELECT
60	# if HAVE_SELECT && HAVE_SYS_SELECT_H	77	# if HAVE_SELECT && HAVE_SYS_SELECT_H
…		…
102	# else	119	# else
103	# define EV_USE_INOTIFY 0	120	# define EV_USE_INOTIFY 0
104	# endif	121	# endif
105	# endif	122	# endif
106		123
		124	# ifndef EV_USE_EVENTFD
		125	# if HAVE_EVENTFD
		126	# define EV_USE_EVENTFD 1
		127	# else
		128	# define EV_USE_EVENTFD 0
		129	# endif
		130	# endif
		131
107	#endif	132	#endif
108		133
109	#include <math.h>	134	#include <math.h>
110	#include <stdlib.h>	135	#include <stdlib.h>
111	#include <fcntl.h>	136	#include <fcntl.h>
…		…
129	#ifndef _WIN32	154	#ifndef _WIN32
130	# include <sys/time.h>	155	# include <sys/time.h>
131	# include <sys/wait.h>	156	# include <sys/wait.h>
132	# include <unistd.h>	157	# include <unistd.h>
133	#else	158	#else
		159	# include <io.h>
134	# define WIN32_LEAN_AND_MEAN	160	# define WIN32_LEAN_AND_MEAN
135	# include <windows.h>	161	# include <windows.h>
136	# ifndef EV_SELECT_IS_WINSOCKET	162	# ifndef EV_SELECT_IS_WINSOCKET
137	# define EV_SELECT_IS_WINSOCKET 1	163	# define EV_SELECT_IS_WINSOCKET 1
138	# endif	164	# endif
139	#endif	165	#endif
140		166
141	/**/	167	/* this block tries to deduce configuration from header-defined symbols and defaults */
142		168
143	#ifndef EV_USE_MONOTONIC	169	#ifndef EV_USE_MONOTONIC
		170	# if defined (_POSIX_MONOTONIC_CLOCK) && _POSIX_MONOTONIC_CLOCK >= 0
		171	# define EV_USE_MONOTONIC 1
		172	# else
144	# define EV_USE_MONOTONIC 0	173	# define EV_USE_MONOTONIC 0
		174	# endif
145	#endif	175	#endif
146		176
147	#ifndef EV_USE_REALTIME	177	#ifndef EV_USE_REALTIME
148	# define EV_USE_REALTIME 0	178	# define EV_USE_REALTIME 0
		179	#endif
		180
		181	#ifndef EV_USE_NANOSLEEP
		182	# if _POSIX_C_SOURCE >= 199309L
		183	# define EV_USE_NANOSLEEP 1
		184	# else
		185	# define EV_USE_NANOSLEEP 0
		186	# endif
149	#endif	187	#endif
150		188
151	#ifndef EV_USE_SELECT	189	#ifndef EV_USE_SELECT
152	# define EV_USE_SELECT 1	190	# define EV_USE_SELECT 1
153	#endif	191	#endif
…		…
159	# define EV_USE_POLL 1	197	# define EV_USE_POLL 1
160	# endif	198	# endif
161	#endif	199	#endif
162		200
163	#ifndef EV_USE_EPOLL	201	#ifndef EV_USE_EPOLL
		202	# if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 4))
		203	# define EV_USE_EPOLL 1
		204	# else
164	# define EV_USE_EPOLL 0	205	# define EV_USE_EPOLL 0
		206	# endif
165	#endif	207	#endif
166		208
167	#ifndef EV_USE_KQUEUE	209	#ifndef EV_USE_KQUEUE
168	# define EV_USE_KQUEUE 0	210	# define EV_USE_KQUEUE 0
169	#endif	211	#endif
…		…
171	#ifndef EV_USE_PORT	213	#ifndef EV_USE_PORT
172	# define EV_USE_PORT 0	214	# define EV_USE_PORT 0
173	#endif	215	#endif
174		216
175	#ifndef EV_USE_INOTIFY	217	#ifndef EV_USE_INOTIFY
		218	# if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 4))
		219	# define EV_USE_INOTIFY 1
		220	# else
176	# define EV_USE_INOTIFY 0	221	# define EV_USE_INOTIFY 0
		222	# endif
177	#endif	223	#endif
178		224
179	#ifndef EV_PID_HASHSIZE	225	#ifndef EV_PID_HASHSIZE
180	# if EV_MINIMAL	226	# if EV_MINIMAL
181	# define EV_PID_HASHSIZE 1	227	# define EV_PID_HASHSIZE 1
…		…
190	# else	236	# else
191	# define EV_INOTIFY_HASHSIZE 16	237	# define EV_INOTIFY_HASHSIZE 16
192	# endif	238	# endif
193	#endif	239	#endif
194		240
195	/**/	241	#ifndef EV_USE_EVENTFD
		242	# if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 7))
		243	# define EV_USE_EVENTFD 1
		244	# else
		245	# define EV_USE_EVENTFD 0
		246	# endif
		247	#endif
		248
		249	#if 0 /* debugging */
		250	# define EV_VERIFY 3
		251	# define EV_USE_4HEAP 1
		252	# define EV_HEAP_CACHE_AT 1
		253	#endif
		254
		255	#ifndef EV_VERIFY
		256	# define EV_VERIFY !EV_MINIMAL
		257	#endif
		258
		259	#ifndef EV_USE_4HEAP
		260	# define EV_USE_4HEAP !EV_MINIMAL
		261	#endif
		262
		263	#ifndef EV_HEAP_CACHE_AT
		264	# define EV_HEAP_CACHE_AT !EV_MINIMAL
		265	#endif
		266
		267	/* this block fixes any misconfiguration where we know we run into trouble otherwise */
196		268
197	#ifndef CLOCK_MONOTONIC	269	#ifndef CLOCK_MONOTONIC
198	# undef EV_USE_MONOTONIC	270	# undef EV_USE_MONOTONIC
199	# define EV_USE_MONOTONIC 0	271	# define EV_USE_MONOTONIC 0
200	#endif	272	#endif
…		…
207	#if !EV_STAT_ENABLE	279	#if !EV_STAT_ENABLE
208	# undef EV_USE_INOTIFY	280	# undef EV_USE_INOTIFY
209	# define EV_USE_INOTIFY 0	281	# define EV_USE_INOTIFY 0
210	#endif	282	#endif
211		283
		284	#if !EV_USE_NANOSLEEP
		285	# ifndef _WIN32
		286	# include <sys/select.h>
		287	# endif
		288	#endif
		289
212	#if EV_USE_INOTIFY	290	#if EV_USE_INOTIFY
		291	# include <sys/utsname.h>
213	# include <sys/inotify.h>	292	# include <sys/inotify.h>
		293	/* some very old inotify.h headers don't have IN_DONT_FOLLOW */
		294	# ifndef IN_DONT_FOLLOW
		295	# undef EV_USE_INOTIFY
		296	# define EV_USE_INOTIFY 0
		297	# endif
214	#endif	298	#endif
215		299
216	#if EV_SELECT_IS_WINSOCKET	300	#if EV_SELECT_IS_WINSOCKET
217	# include <winsock.h>	301	# include <winsock.h>
218	#endif	302	#endif
219		303
		304	#if EV_USE_EVENTFD
		305	/* our minimum requirement is glibc 2.7 which has the stub, but not the header */
		306	# include <stdint.h>
		307	# ifdef __cplusplus
		308	extern "C" {
		309	# endif
		310	int eventfd (unsigned int initval, int flags);
		311	# ifdef __cplusplus
		312	}
		313	# endif
		314	#endif
		315
220	/**/	316	/**/
		317
		318	#if EV_VERIFY >= 3
		319	# define EV_FREQUENT_CHECK ev_loop_verify (EV_A)
		320	#else
		321	# define EV_FREQUENT_CHECK do { } while (0)
		322	#endif
221		323
222	/*	324	/*
223	* This is used to avoid floating point rounding problems.	325	* This is used to avoid floating point rounding problems.
224	* It is added to ev_rt_now when scheduling periodics	326	* It is added to ev_rt_now when scheduling periodics
225	* to ensure progress, time-wise, even when rounding	327	* to ensure progress, time-wise, even when rounding
…		…
237	# define expect(expr,value) __builtin_expect ((expr),(value))	339	# define expect(expr,value) __builtin_expect ((expr),(value))
238	# define noinline __attribute__ ((noinline))	340	# define noinline __attribute__ ((noinline))
239	#else	341	#else
240	# define expect(expr,value) (expr)	342	# define expect(expr,value) (expr)
241	# define noinline	343	# define noinline
242	# if __STDC_VERSION__ < 199901L	344	# if __STDC_VERSION__ < 199901L && __GNUC__ < 2
243	# define inline	345	# define inline
244	# endif	346	# endif
245	#endif	347	#endif
246		348
247	#define expect_false(expr) expect ((expr) != 0, 0)	349	#define expect_false(expr) expect ((expr) != 0, 0)
…		…
262		364
263	typedef ev_watcher *W;	365	typedef ev_watcher *W;
264	typedef ev_watcher_list *WL;	366	typedef ev_watcher_list *WL;
265	typedef ev_watcher_time *WT;	367	typedef ev_watcher_time *WT;
266		368
		369	#define ev_active(w) ((W)(w))->active
		370	#define ev_at(w) ((WT)(w))->at
		371
		372	#if EV_USE_MONOTONIC
		373	/* sig_atomic_t is used to avoid per-thread variables or locking but still */
		374	/* giving it a reasonably high chance of working on typical architetcures */
267	static int have_monotonic; /* did clock_gettime (CLOCK_MONOTONIC) work? */	375	static EV_ATOMIC_T have_monotonic; /* did clock_gettime (CLOCK_MONOTONIC) work? */
		376	#endif
268		377
269	#ifdef _WIN32	378	#ifdef _WIN32
270	# include "ev_win32.c"	379	# include "ev_win32.c"
271	#endif	380	#endif
272		381
…		…
293	perror (msg);	402	perror (msg);
294	abort ();	403	abort ();
295	}	404	}
296	}	405	}
297		406
		407	static void *
		408	ev_realloc_emul (void *ptr, long size)
		409	{
		410	/* some systems, notably openbsd and darwin, fail to properly
		411	* implement realloc (x, 0) (as required by both ansi c-98 and
		412	* the single unix specification, so work around them here.
		413	*/
		414
		415	if (size)
		416	return realloc (ptr, size);
		417
		418	free (ptr);
		419	return 0;
		420	}
		421
298	static void *(*alloc)(void *ptr, long size);	422	static void *(*alloc)(void *ptr, long size) = ev_realloc_emul;
299		423
300	void	424	void
301	ev_set_allocator (void *(*cb)(void *ptr, long size))	425	ev_set_allocator (void *(*cb)(void *ptr, long size))
302	{	426	{
303	alloc = cb;	427	alloc = cb;
304	}	428	}
305		429
306	inline_speed void *	430	inline_speed void *
307	ev_realloc (void *ptr, long size)	431	ev_realloc (void *ptr, long size)
308	{	432	{
309	ptr = alloc ? alloc (ptr, size) : realloc (ptr, size);	433	ptr = alloc (ptr, size);
310		434
311	if (!ptr && size)	435	if (!ptr && size)
312	{	436	{
313	fprintf (stderr, "libev: cannot allocate %ld bytes, aborting.", size);	437	fprintf (stderr, "libev: cannot allocate %ld bytes, aborting.", size);
314	abort ();	438	abort ();
…		…
325	typedef struct	449	typedef struct
326	{	450	{
327	WL head;	451	WL head;
328	unsigned char events;	452	unsigned char events;
329	unsigned char reify;	453	unsigned char reify;
		454	unsigned char emask; /* the epoll backend stores the actual kernel mask in here */
		455	unsigned char egen; /* generation counter to counter epoll bugs */
330	#if EV_SELECT_IS_WINSOCKET	456	#if EV_SELECT_IS_WINSOCKET
331	SOCKET handle;	457	SOCKET handle;
332	#endif	458	#endif
333	} ANFD;	459	} ANFD;
334		460
…		…
337	W w;	463	W w;
338	int events;	464	int events;
339	} ANPENDING;	465	} ANPENDING;
340		466
341	#if EV_USE_INOTIFY	467	#if EV_USE_INOTIFY
		468	/* hash table entry per inotify-id */
342	typedef struct	469	typedef struct
343	{	470	{
344	WL head;	471	WL head;
345	} ANFS;	472	} ANFS;
		473	#endif
		474
		475	/* Heap Entry */
		476	#if EV_HEAP_CACHE_AT
		477	typedef struct {
		478	ev_tstamp at;
		479	WT w;
		480	} ANHE;
		481
		482	#define ANHE_w(he) (he).w /* access watcher, read-write */
		483	#define ANHE_at(he) (he).at /* access cached at, read-only */
		484	#define ANHE_at_cache(he) (he).at = (he).w->at /* update at from watcher */
		485	#else
		486	typedef WT ANHE;
		487
		488	#define ANHE_w(he) (he)
		489	#define ANHE_at(he) (he)->at
		490	#define ANHE_at_cache(he)
346	#endif	491	#endif
347		492
348	#if EV_MULTIPLICITY	493	#if EV_MULTIPLICITY
349		494
350	struct ev_loop	495	struct ev_loop
…		…
408	{	553	{
409	return ev_rt_now;	554	return ev_rt_now;
410	}	555	}
411	#endif	556	#endif
412		557
		558	void
		559	ev_sleep (ev_tstamp delay)
		560	{
		561	if (delay > 0.)
		562	{
		563	#if EV_USE_NANOSLEEP
		564	struct timespec ts;
		565
		566	ts.tv_sec = (time_t)delay;
		567	ts.tv_nsec = (long)((delay - (ev_tstamp)(ts.tv_sec)) * 1e9);
		568
		569	nanosleep (&ts, 0);
		570	#elif defined(_WIN32)
		571	Sleep ((unsigned long)(delay * 1e3));
		572	#else
		573	struct timeval tv;
		574
		575	tv.tv_sec = (time_t)delay;
		576	tv.tv_usec = (long)((delay - (ev_tstamp)(tv.tv_sec)) * 1e6);
		577
		578	/* here we rely on sys/time.h + sys/types.h + unistd.h providing select */
		579	/* somehting nto guaranteed by newer posix versions, but guaranteed */
		580	/* by older ones */
		581	select (0, 0, 0, 0, &tv);
		582	#endif
		583	}
		584	}
		585
		586	/*****************************************************************************/
		587
		588	#define MALLOC_ROUND 4096 /* prefer to allocate in chunks of this size, must be 2**n and >> 4 longs */
		589
413	int inline_size	590	int inline_size
414	array_nextsize (int elem, int cur, int cnt)	591	array_nextsize (int elem, int cur, int cnt)
415	{	592	{
416	int ncur = cur + 1;	593	int ncur = cur + 1;
417		594
418	do	595	do
419	ncur <<= 1;	596	ncur <<= 1;
420	while (cnt > ncur);	597	while (cnt > ncur);
421		598
422	/* if size > 4096, round to 4096 - 4 * longs to accomodate malloc overhead */	599	/* if size is large, round to MALLOC_ROUND - 4 * longs to accomodate malloc overhead */
423	if (elem * ncur > 4096)	600	if (elem * ncur > MALLOC_ROUND - sizeof (void *) * 4)
424	{	601	{
425	ncur *= elem;	602	ncur *= elem;
426	ncur = (ncur + elem + 4095 + sizeof (void *) * 4) & ~4095;	603	ncur = (ncur + elem + (MALLOC_ROUND - 1) + sizeof (void *) * 4) & ~(MALLOC_ROUND - 1);
427	ncur = ncur - sizeof (void *) * 4;	604	ncur = ncur - sizeof (void *) * 4;
428	ncur /= elem;	605	ncur /= elem;
429	}	606	}
430		607
431	return ncur;	608	return ncur;
…		…
435	array_realloc (int elem, void *base, int *cur, int cnt)	612	array_realloc (int elem, void *base, int *cur, int cnt)
436	{	613	{
437	*cur = array_nextsize (elem, *cur, cnt);	614	*cur = array_nextsize (elem, *cur, cnt);
438	return ev_realloc (base, elem * *cur);	615	return ev_realloc (base, elem * *cur);
439	}	616	}
		617
		618	#define array_init_zero(base,count) \
		619	memset ((void *)(base), 0, sizeof (*(base)) * (count))
440		620
441	#define array_needsize(type,base,cur,cnt,init) \	621	#define array_needsize(type,base,cur,cnt,init) \
442	if (expect_false ((cnt) > (cur))) \	622	if (expect_false ((cnt) > (cur))) \
443	{ \	623	{ \
444	int ocur_ = (cur); \	624	int ocur_ = (cur); \
…		…
488	ev_feed_event (EV_A_ events [i], type);	668	ev_feed_event (EV_A_ events [i], type);
489	}	669	}
490		670
491	/*****************************************************************************/	671	/*****************************************************************************/
492		672
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	673	void inline_speed
507	fd_event (EV_P_ int fd, int revents)	674	fd_event (EV_P_ int fd, int revents)
508	{	675	{
509	ANFD *anfd = anfds + fd;	676	ANFD *anfd = anfds + fd;
510	ev_io *w;	677	ev_io *w;
…		…
542	events |= (unsigned char)w->events;	709	events |= (unsigned char)w->events;
543		710
544	#if EV_SELECT_IS_WINSOCKET	711	#if EV_SELECT_IS_WINSOCKET
545	if (events)	712	if (events)
546	{	713	{
547	unsigned long argp;	714	unsigned long arg;
		715	#ifdef EV_FD_TO_WIN32_HANDLE
		716	anfd->handle = EV_FD_TO_WIN32_HANDLE (fd);
		717	#else
548	anfd->handle = _get_osfhandle (fd);	718	anfd->handle = _get_osfhandle (fd);
		719	#endif
549	assert (("libev only supports socket fds in this configuration", ioctlsocket (anfd->handle, FIONREAD, &argp) == 0));	720	assert (("libev only supports socket fds in this configuration", ioctlsocket (anfd->handle, FIONREAD, &arg) == 0));
550	}	721	}
551	#endif	722	#endif
552		723
553	{	724	{
554	unsigned char o_events = anfd->events;	725	unsigned char o_events = anfd->events;
…		…
607	{	778	{
608	int fd;	779	int fd;
609		780
610	for (fd = 0; fd < anfdmax; ++fd)	781	for (fd = 0; fd < anfdmax; ++fd)
611	if (anfds [fd].events)	782	if (anfds [fd].events)
612	if (!fd_valid (fd) == -1 && errno == EBADF)	783	if (!fd_valid (fd) && errno == EBADF)
613	fd_kill (EV_A_ fd);	784	fd_kill (EV_A_ fd);
614	}	785	}
615		786
616	/* called on ENOMEM in select/poll to kill some fds and retry */	787	/* called on ENOMEM in select/poll to kill some fds and retry */
617	static void noinline	788	static void noinline
…		…
635		806
636	for (fd = 0; fd < anfdmax; ++fd)	807	for (fd = 0; fd < anfdmax; ++fd)
637	if (anfds [fd].events)	808	if (anfds [fd].events)
638	{	809	{
639	anfds [fd].events = 0;	810	anfds [fd].events = 0;
		811	anfds [fd].emask = 0;
640	fd_change (EV_A_ fd, EV_IOFDSET | 1);	812	fd_change (EV_A_ fd, EV_IOFDSET | 1);
641	}	813	}
642	}	814	}
643		815
644	/*****************************************************************************/	816	/*****************************************************************************/
645		817
		818	/*
		819	* the heap functions want a real array index. array index 0 uis guaranteed to not
		820	* be in-use at any time. the first heap entry is at array [HEAP0]. DHEAP gives
		821	* the branching factor of the d-tree.
		822	*/
		823
		824	/*
		825	* at the moment we allow libev the luxury of two heaps,
		826	* a small-code-size 2-heap one and a ~1.5kb larger 4-heap
		827	* which is more cache-efficient.
		828	* the difference is about 5% with 50000+ watchers.
		829	*/
		830	#if EV_USE_4HEAP
		831
		832	#define DHEAP 4
		833	#define HEAP0 (DHEAP - 1) /* index of first element in heap */
		834	#define HPARENT(k) ((((k) - HEAP0 - 1) / DHEAP) + HEAP0)
		835	#define UPHEAP_DONE(p,k) ((p) == (k))
		836
		837	/* away from the root */
646	void inline_speed	838	void inline_speed
647	upheap (WT *heap, int k)	839	downheap (ANHE *heap, int N, int k)
648	{	840	{
649	WT w = heap [k];	841	ANHE he = heap [k];
		842	ANHE *E = heap + N + HEAP0;
650		843
651	while (k)	844	for (;;)
652	{	845	{
653	int p = (k - 1) >> 1;	846	ev_tstamp minat;
		847	ANHE *minpos;
		848	ANHE *pos = heap + DHEAP * (k - HEAP0) + HEAP0 + 1;
654		849
655	if (heap [p]->at <= w->at)	850	/* find minimum child */
		851	if (expect_true (pos + DHEAP - 1 < E))
		852	{
		853	/* fast path */ (minpos = pos + 0), (minat = ANHE_at (*minpos));
		854	if ( ANHE_at (pos [1]) < minat) (minpos = pos + 1), (minat = ANHE_at (*minpos));
		855	if ( ANHE_at (pos [2]) < minat) (minpos = pos + 2), (minat = ANHE_at (*minpos));
		856	if ( ANHE_at (pos [3]) < minat) (minpos = pos + 3), (minat = ANHE_at (*minpos));
		857	}
		858	else if (pos < E)
		859	{
		860	/* slow path */ (minpos = pos + 0), (minat = ANHE_at (*minpos));
		861	if (pos + 1 < E && ANHE_at (pos [1]) < minat) (minpos = pos + 1), (minat = ANHE_at (*minpos));
		862	if (pos + 2 < E && ANHE_at (pos [2]) < minat) (minpos = pos + 2), (minat = ANHE_at (*minpos));
		863	if (pos + 3 < E && ANHE_at (pos [3]) < minat) (minpos = pos + 3), (minat = ANHE_at (*minpos));
		864	}
		865	else
656	break;	866	break;
657		867
		868	if (ANHE_at (he) <= minat)
		869	break;
		870
		871	heap [k] = *minpos;
		872	ev_active (ANHE_w (*minpos)) = k;
		873
		874	k = minpos - heap;
		875	}
		876
		877	heap [k] = he;
		878	ev_active (ANHE_w (he)) = k;
		879	}
		880
		881	#else /* 4HEAP */
		882
		883	#define HEAP0 1
		884	#define HPARENT(k) ((k) >> 1)
		885	#define UPHEAP_DONE(p,k) (!(p))
		886
		887	/* away from the root */
		888	void inline_speed
		889	downheap (ANHE *heap, int N, int k)
		890	{
		891	ANHE he = heap [k];
		892
		893	for (;;)
		894	{
		895	int c = k << 1;
		896
		897	if (c > N + HEAP0 - 1)
		898	break;
		899
		900	c += c + 1 < N + HEAP0 && ANHE_at (heap [c]) > ANHE_at (heap [c + 1])
		901	? 1 : 0;
		902
		903	if (ANHE_at (he) <= ANHE_at (heap [c]))
		904	break;
		905
		906	heap [k] = heap [c];
		907	ev_active (ANHE_w (heap [k])) = k;
		908
		909	k = c;
		910	}
		911
		912	heap [k] = he;
		913	ev_active (ANHE_w (he)) = k;
		914	}
		915	#endif
		916
		917	/* towards the root */
		918	void inline_speed
		919	upheap (ANHE *heap, int k)
		920	{
		921	ANHE he = heap [k];
		922
		923	for (;;)
		924	{
		925	int p = HPARENT (k);
		926
		927	if (UPHEAP_DONE (p, k) || ANHE_at (heap [p]) <= ANHE_at (he))
		928	break;
		929
658	heap [k] = heap [p];	930	heap [k] = heap [p];
659	((W)heap [k])->active = k + 1;	931	ev_active (ANHE_w (heap [k])) = k;
660	k = p;	932	k = p;
661	}	933	}
662		934
663	heap [k] = w;	935	heap [k] = he;
664	((W)heap [k])->active = k + 1;	936	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	}	937	}
694		938
695	void inline_size	939	void inline_size
696	adjustheap (WT *heap, int N, int k)	940	adjustheap (ANHE *heap, int N, int k)
697	{	941	{
		942	if (k > HEAP0 && ANHE_at (heap [HPARENT (k)]) >= ANHE_at (heap [k]))
698	upheap (heap, k);	943	upheap (heap, k);
		944	else
699	downheap (heap, N, k);	945	downheap (heap, N, k);
		946	}
		947
		948	/* rebuild the heap: this function is used only once and executed rarely */
		949	void inline_size
		950	reheap (ANHE *heap, int N)
		951	{
		952	int i;
		953
		954	/* we don't use floyds algorithm, upheap is simpler and is more cache-efficient */
		955	/* also, this is easy to implement and correct for both 2-heaps and 4-heaps */
		956	for (i = 0; i < N; ++i)
		957	upheap (heap, i + HEAP0);
700	}	958	}
701		959
702	/*****************************************************************************/	960	/*****************************************************************************/
703		961
704	typedef struct	962	typedef struct
705	{	963	{
706	WL head;	964	WL head;
707	sig_atomic_t volatile gotsig;	965	EV_ATOMIC_T gotsig;
708	} ANSIG;	966	} ANSIG;
709		967
710	static ANSIG *signals;	968	static ANSIG *signals;
711	static int signalmax;	969	static int signalmax;
712		970
713	static int sigpipe [2];	971	static EV_ATOMIC_T gotsig;
714	static sig_atomic_t volatile gotsig;
715	static ev_io sigev;
716		972
717	void inline_size	973	/*****************************************************************************/
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		974
780	void inline_speed	975	void inline_speed
781	fd_intern (int fd)	976	fd_intern (int fd)
782	{	977	{
783	#ifdef _WIN32	978	#ifdef _WIN32
784	int arg = 1;	979	unsigned long arg = 1;
785	ioctlsocket (_get_osfhandle (fd), FIONBIO, &arg);	980	ioctlsocket (_get_osfhandle (fd), FIONBIO, &arg);
786	#else	981	#else
787	fcntl (fd, F_SETFD, FD_CLOEXEC);	982	fcntl (fd, F_SETFD, FD_CLOEXEC);
788	fcntl (fd, F_SETFL, O_NONBLOCK);	983	fcntl (fd, F_SETFL, O_NONBLOCK);
789	#endif	984	#endif
790	}	985	}
791		986
792	static void noinline	987	static void noinline
793	siginit (EV_P)	988	evpipe_init (EV_P)
794	{	989	{
		990	if (!ev_is_active (&pipeev))
		991	{
		992	#if EV_USE_EVENTFD
		993	if ((evfd = eventfd (0, 0)) >= 0)
		994	{
		995	evpipe [0] = -1;
		996	fd_intern (evfd);
		997	ev_io_set (&pipeev, evfd, EV_READ);
		998	}
		999	else
		1000	#endif
		1001	{
		1002	while (pipe (evpipe))
		1003	syserr ("(libev) error creating signal/async pipe");
		1004
795	fd_intern (sigpipe [0]);	1005	fd_intern (evpipe [0]);
796	fd_intern (sigpipe [1]);	1006	fd_intern (evpipe [1]);
		1007	ev_io_set (&pipeev, evpipe [0], EV_READ);
		1008	}
797		1009
798	ev_io_set (&sigev, sigpipe [0], EV_READ);
799	ev_io_start (EV_A_ &sigev);	1010	ev_io_start (EV_A_ &pipeev);
800	ev_unref (EV_A); /* child watcher should not keep loop alive */	1011	ev_unref (EV_A); /* watcher should not keep loop alive */
		1012	}
		1013	}
		1014
		1015	void inline_size
		1016	evpipe_write (EV_P_ EV_ATOMIC_T *flag)
		1017	{
		1018	if (!*flag)
		1019	{
		1020	int old_errno = errno; /* save errno because write might clobber it */
		1021
		1022	*flag = 1;
		1023
		1024	#if EV_USE_EVENTFD
		1025	if (evfd >= 0)
		1026	{
		1027	uint64_t counter = 1;
		1028	write (evfd, &counter, sizeof (uint64_t));
		1029	}
		1030	else
		1031	#endif
		1032	write (evpipe [1], &old_errno, 1);
		1033
		1034	errno = old_errno;
		1035	}
		1036	}
		1037
		1038	static void
		1039	pipecb (EV_P_ ev_io *iow, int revents)
		1040	{
		1041	#if EV_USE_EVENTFD
		1042	if (evfd >= 0)
		1043	{
		1044	uint64_t counter;
		1045	read (evfd, &counter, sizeof (uint64_t));
		1046	}
		1047	else
		1048	#endif
		1049	{
		1050	char dummy;
		1051	read (evpipe [0], &dummy, 1);
		1052	}
		1053
		1054	if (gotsig && ev_is_default_loop (EV_A))
		1055	{
		1056	int signum;
		1057	gotsig = 0;
		1058
		1059	for (signum = signalmax; signum--; )
		1060	if (signals [signum].gotsig)
		1061	ev_feed_signal_event (EV_A_ signum + 1);
		1062	}
		1063
		1064	#if EV_ASYNC_ENABLE
		1065	if (gotasync)
		1066	{
		1067	int i;
		1068	gotasync = 0;
		1069
		1070	for (i = asynccnt; i--; )
		1071	if (asyncs [i]->sent)
		1072	{
		1073	asyncs [i]->sent = 0;
		1074	ev_feed_event (EV_A_ asyncs [i], EV_ASYNC);
		1075	}
		1076	}
		1077	#endif
801	}	1078	}
802		1079
803	/*****************************************************************************/	1080	/*****************************************************************************/
804		1081
		1082	static void
		1083	ev_sighandler (int signum)
		1084	{
		1085	#if EV_MULTIPLICITY
		1086	struct ev_loop *loop = &default_loop_struct;
		1087	#endif
		1088
		1089	#if _WIN32
		1090	signal (signum, ev_sighandler);
		1091	#endif
		1092
		1093	signals [signum - 1].gotsig = 1;
		1094	evpipe_write (EV_A_ &gotsig);
		1095	}
		1096
		1097	void noinline
		1098	ev_feed_signal_event (EV_P_ int signum)
		1099	{
		1100	WL w;
		1101
		1102	#if EV_MULTIPLICITY
		1103	assert (("feeding signal events is only supported in the default loop", loop == ev_default_loop_ptr));
		1104	#endif
		1105
		1106	--signum;
		1107
		1108	if (signum < 0 || signum >= signalmax)
		1109	return;
		1110
		1111	signals [signum].gotsig = 0;
		1112
		1113	for (w = signals [signum].head; w; w = w->next)
		1114	ev_feed_event (EV_A_ (W)w, EV_SIGNAL);
		1115	}
		1116
		1117	/*****************************************************************************/
		1118
805	static WL childs [EV_PID_HASHSIZE];	1119	static WL childs [EV_PID_HASHSIZE];
806		1120
807	#ifndef _WIN32	1121	#ifndef _WIN32
808		1122
809	static ev_signal childev;	1123	static ev_signal childev;
810		1124
		1125	#ifndef WIFCONTINUED
		1126	# define WIFCONTINUED(status) 0
		1127	#endif
		1128
811	void inline_speed	1129	void inline_speed
812	child_reap (EV_P_ ev_signal *sw, int chain, int pid, int status)	1130	child_reap (EV_P_ int chain, int pid, int status)
813	{	1131	{
814	ev_child *w;	1132	ev_child *w;
		1133	int traced = WIFSTOPPED (status) || WIFCONTINUED (status);
815		1134
816	for (w = (ev_child *)childs [chain & (EV_PID_HASHSIZE - 1)]; w; w = (ev_child *)((WL)w)->next)	1135	for (w = (ev_child *)childs [chain & (EV_PID_HASHSIZE - 1)]; w; w = (ev_child *)((WL)w)->next)
		1136	{
817	if (w->pid == pid || !w->pid)	1137	if ((w->pid == pid || !w->pid)
		1138	&& (!traced || (w->flags & 1)))
818	{	1139	{
819	ev_set_priority (w, ev_priority (sw)); /* need to do it *now* */	1140	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;	1141	w->rpid = pid;
821	w->rstatus = status;	1142	w->rstatus = status;
822	ev_feed_event (EV_A_ (W)w, EV_CHILD);	1143	ev_feed_event (EV_A_ (W)w, EV_CHILD);
823	}	1144	}
		1145	}
824	}	1146	}
825		1147
826	#ifndef WCONTINUED	1148	#ifndef WCONTINUED
827	# define WCONTINUED 0	1149	# define WCONTINUED 0
828	#endif	1150	#endif
…		…
837	if (!WCONTINUED	1159	if (!WCONTINUED
838	|| errno != EINVAL	1160	|| errno != EINVAL
839	|| 0 >= (pid = waitpid (-1, &status, WNOHANG | WUNTRACED)))	1161	|| 0 >= (pid = waitpid (-1, &status, WNOHANG | WUNTRACED)))
840	return;	1162	return;
841		1163
842	/* make sure we are called again until all childs have been reaped */	1164	/* 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 */	1165	/* 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);	1166	ev_feed_event (EV_A_ (W)sw, EV_SIGNAL);
845		1167
846	child_reap (EV_A_ sw, pid, pid, status);	1168	child_reap (EV_A_ pid, pid, status);
847	if (EV_PID_HASHSIZE > 1)	1169	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 */	1170	child_reap (EV_A_ 0, pid, status); /* this might trigger a watcher twice, but feed_event catches that */
849	}	1171	}
850		1172
851	#endif	1173	#endif
852		1174
853	/*****************************************************************************/	1175	/*****************************************************************************/
…		…
925	}	1247	}
926		1248
927	unsigned int	1249	unsigned int
928	ev_embeddable_backends (void)	1250	ev_embeddable_backends (void)
929	{	1251	{
930	return EVBACKEND_EPOLL	1252	int flags = EVBACKEND_EPOLL | EVBACKEND_KQUEUE | EVBACKEND_PORT;
931	| EVBACKEND_KQUEUE	1253
932	| EVBACKEND_PORT;	1254	/* epoll embeddability broken on all linux versions up to at least 2.6.23 */
		1255	/* please fix it and tell me how to detect the fix */
		1256	flags &= ~EVBACKEND_EPOLL;
		1257
		1258	return flags;
933	}	1259	}
934		1260
935	unsigned int	1261	unsigned int
936	ev_backend (EV_P)	1262	ev_backend (EV_P)
937	{	1263	{
…		…
940		1266
941	unsigned int	1267	unsigned int
942	ev_loop_count (EV_P)	1268	ev_loop_count (EV_P)
943	{	1269	{
944	return loop_count;	1270	return loop_count;
		1271	}
		1272
		1273	void
		1274	ev_set_io_collect_interval (EV_P_ ev_tstamp interval)
		1275	{
		1276	io_blocktime = interval;
		1277	}
		1278
		1279	void
		1280	ev_set_timeout_collect_interval (EV_P_ ev_tstamp interval)
		1281	{
		1282	timeout_blocktime = interval;
945	}	1283	}
946		1284
947	static void noinline	1285	static void noinline
948	loop_init (EV_P_ unsigned int flags)	1286	loop_init (EV_P_ unsigned int flags)
949	{	1287	{
…		…
955	if (!clock_gettime (CLOCK_MONOTONIC, &ts))	1293	if (!clock_gettime (CLOCK_MONOTONIC, &ts))
956	have_monotonic = 1;	1294	have_monotonic = 1;
957	}	1295	}
958	#endif	1296	#endif
959		1297
960	ev_rt_now = ev_time ();	1298	ev_rt_now = ev_time ();
961	mn_now = get_clock ();	1299	mn_now = get_clock ();
962	now_floor = mn_now;	1300	now_floor = mn_now;
963	rtmn_diff = ev_rt_now - mn_now;	1301	rtmn_diff = ev_rt_now - mn_now;
		1302
		1303	io_blocktime = 0.;
		1304	timeout_blocktime = 0.;
		1305	backend = 0;
		1306	backend_fd = -1;
		1307	gotasync = 0;
		1308	#if EV_USE_INOTIFY
		1309	fs_fd = -2;
		1310	#endif
964		1311
965	/* pid check not overridable via env */	1312	/* pid check not overridable via env */
966	#ifndef _WIN32	1313	#ifndef _WIN32
967	if (flags & EVFLAG_FORKCHECK)	1314	if (flags & EVFLAG_FORKCHECK)
968	curpid = getpid ();	1315	curpid = getpid ();
…		…
971	if (!(flags & EVFLAG_NOENV)	1318	if (!(flags & EVFLAG_NOENV)
972	&& !enable_secure ()	1319	&& !enable_secure ()
973	&& getenv ("LIBEV_FLAGS"))	1320	&& getenv ("LIBEV_FLAGS"))
974	flags = atoi (getenv ("LIBEV_FLAGS"));	1321	flags = atoi (getenv ("LIBEV_FLAGS"));
975		1322
976	if (!(flags & 0x0000ffffUL))	1323	if (!(flags & 0x0000ffffU))
977	flags |= ev_recommended_backends ();	1324	flags |= ev_recommended_backends ();
978
979	backend = 0;
980	backend_fd = -1;
981	#if EV_USE_INOTIFY
982	fs_fd = -2;
983	#endif
984		1325
985	#if EV_USE_PORT	1326	#if EV_USE_PORT
986	if (!backend && (flags & EVBACKEND_PORT )) backend = port_init (EV_A_ flags);	1327	if (!backend && (flags & EVBACKEND_PORT )) backend = port_init (EV_A_ flags);
987	#endif	1328	#endif
988	#if EV_USE_KQUEUE	1329	#if EV_USE_KQUEUE
…		…
996	#endif	1337	#endif
997	#if EV_USE_SELECT	1338	#if EV_USE_SELECT
998	if (!backend && (flags & EVBACKEND_SELECT)) backend = select_init (EV_A_ flags);	1339	if (!backend && (flags & EVBACKEND_SELECT)) backend = select_init (EV_A_ flags);
999	#endif	1340	#endif
1000		1341
1001	ev_init (&sigev, sigcb);	1342	ev_init (&pipeev, pipecb);
1002	ev_set_priority (&sigev, EV_MAXPRI);	1343	ev_set_priority (&pipeev, EV_MAXPRI);
1003	}	1344	}
1004	}	1345	}
1005		1346
1006	static void noinline	1347	static void noinline
1007	loop_destroy (EV_P)	1348	loop_destroy (EV_P)
1008	{	1349	{
1009	int i;	1350	int i;
		1351
		1352	if (ev_is_active (&pipeev))
		1353	{
		1354	ev_ref (EV_A); /* signal watcher */
		1355	ev_io_stop (EV_A_ &pipeev);
		1356
		1357	#if EV_USE_EVENTFD
		1358	if (evfd >= 0)
		1359	close (evfd);
		1360	#endif
		1361
		1362	if (evpipe [0] >= 0)
		1363	{
		1364	close (evpipe [0]);
		1365	close (evpipe [1]);
		1366	}
		1367	}
1010		1368
1011	#if EV_USE_INOTIFY	1369	#if EV_USE_INOTIFY
1012	if (fs_fd >= 0)	1370	if (fs_fd >= 0)
1013	close (fs_fd);	1371	close (fs_fd);
1014	#endif	1372	#endif
…		…
1037	array_free (pending, [i]);	1395	array_free (pending, [i]);
1038	#if EV_IDLE_ENABLE	1396	#if EV_IDLE_ENABLE
1039	array_free (idle, [i]);	1397	array_free (idle, [i]);
1040	#endif	1398	#endif
1041	}	1399	}
		1400
		1401	ev_free (anfds); anfdmax = 0;
1042		1402
1043	/* have to use the microsoft-never-gets-it-right macro */	1403	/* have to use the microsoft-never-gets-it-right macro */
1044	array_free (fdchange, EMPTY);	1404	array_free (fdchange, EMPTY);
1045	array_free (timer, EMPTY);	1405	array_free (timer, EMPTY);
1046	#if EV_PERIODIC_ENABLE	1406	#if EV_PERIODIC_ENABLE
1047	array_free (periodic, EMPTY);	1407	array_free (periodic, EMPTY);
1048	#endif	1408	#endif
		1409	#if EV_FORK_ENABLE
		1410	array_free (fork, EMPTY);
		1411	#endif
1049	array_free (prepare, EMPTY);	1412	array_free (prepare, EMPTY);
1050	array_free (check, EMPTY);	1413	array_free (check, EMPTY);
		1414	#if EV_ASYNC_ENABLE
		1415	array_free (async, EMPTY);
		1416	#endif
1051		1417
1052	backend = 0;	1418	backend = 0;
1053	}	1419	}
1054		1420
		1421	#if EV_USE_INOTIFY
1055	void inline_size infy_fork (EV_P);	1422	void inline_size infy_fork (EV_P);
		1423	#endif
1056		1424
1057	void inline_size	1425	void inline_size
1058	loop_fork (EV_P)	1426	loop_fork (EV_P)
1059	{	1427	{
1060	#if EV_USE_PORT	1428	#if EV_USE_PORT
…		…
1068	#endif	1436	#endif
1069	#if EV_USE_INOTIFY	1437	#if EV_USE_INOTIFY
1070	infy_fork (EV_A);	1438	infy_fork (EV_A);
1071	#endif	1439	#endif
1072		1440
1073	if (ev_is_active (&sigev))	1441	if (ev_is_active (&pipeev))
1074	{	1442	{
1075	/* default loop */	1443	/* this "locks" the handlers against writing to the pipe */
		1444	/* while we modify the fd vars */
		1445	gotsig = 1;
		1446	#if EV_ASYNC_ENABLE
		1447	gotasync = 1;
		1448	#endif
1076		1449
1077	ev_ref (EV_A);	1450	ev_ref (EV_A);
1078	ev_io_stop (EV_A_ &sigev);	1451	ev_io_stop (EV_A_ &pipeev);
		1452
		1453	#if EV_USE_EVENTFD
		1454	if (evfd >= 0)
		1455	close (evfd);
		1456	#endif
		1457
		1458	if (evpipe [0] >= 0)
		1459	{
1079	close (sigpipe [0]);	1460	close (evpipe [0]);
1080	close (sigpipe [1]);	1461	close (evpipe [1]);
		1462	}
1081		1463
1082	while (pipe (sigpipe))
1083	syserr ("(libev) error creating pipe");
1084
1085	siginit (EV_A);	1464	evpipe_init (EV_A);
		1465	/* now iterate over everything, in case we missed something */
		1466	pipecb (EV_A_ &pipeev, EV_READ);
1086	}	1467	}
1087		1468
1088	postfork = 0;	1469	postfork = 0;
1089	}	1470	}
1090		1471
1091	#if EV_MULTIPLICITY	1472	#if EV_MULTIPLICITY
		1473
1092	struct ev_loop *	1474	struct ev_loop *
1093	ev_loop_new (unsigned int flags)	1475	ev_loop_new (unsigned int flags)
1094	{	1476	{
1095	struct ev_loop *loop = (struct ev_loop *)ev_malloc (sizeof (struct ev_loop));	1477	struct ev_loop *loop = (struct ev_loop *)ev_malloc (sizeof (struct ev_loop));
1096		1478
…		…
1112	}	1494	}
1113		1495
1114	void	1496	void
1115	ev_loop_fork (EV_P)	1497	ev_loop_fork (EV_P)
1116	{	1498	{
1117	postfork = 1;	1499	postfork = 1; /* must be in line with ev_default_fork */
1118	}	1500	}
1119		1501
		1502	#if EV_VERIFY
		1503	static void noinline
		1504	verify_watcher (EV_P_ W w)
		1505	{
		1506	assert (("watcher has invalid priority", ABSPRI (w) >= 0 && ABSPRI (w) < NUMPRI));
		1507
		1508	if (w->pending)
		1509	assert (("pending watcher not on pending queue", pendings [ABSPRI (w)][w->pending - 1].w == w));
		1510	}
		1511
		1512	static void noinline
		1513	verify_heap (EV_P_ ANHE *heap, int N)
		1514	{
		1515	int i;
		1516
		1517	for (i = HEAP0; i < N + HEAP0; ++i)
		1518	{
		1519	assert (("active index mismatch in heap", ev_active (ANHE_w (heap [i])) == i));
		1520	assert (("heap condition violated", i == HEAP0 || ANHE_at (heap [HPARENT (i)]) <= ANHE_at (heap [i])));
		1521	assert (("heap at cache mismatch", ANHE_at (heap [i]) == ev_at (ANHE_w (heap [i]))));
		1522
		1523	verify_watcher (EV_A_ (W)ANHE_w (heap [i]));
		1524	}
		1525	}
		1526
		1527	static void noinline
		1528	array_verify (EV_P_ W *ws, int cnt)
		1529	{
		1530	while (cnt--)
		1531	{
		1532	assert (("active index mismatch", ev_active (ws [cnt]) == cnt + 1));
		1533	verify_watcher (EV_A_ ws [cnt]);
		1534	}
		1535	}
		1536	#endif
		1537
		1538	void
		1539	ev_loop_verify (EV_P)
		1540	{
		1541	#if EV_VERIFY
		1542	int i;
		1543	WL w;
		1544
		1545	assert (activecnt >= -1);
		1546
		1547	assert (fdchangemax >= fdchangecnt);
		1548	for (i = 0; i < fdchangecnt; ++i)
		1549	assert (("negative fd in fdchanges", fdchanges [i] >= 0));
		1550
		1551	assert (anfdmax >= 0);
		1552	for (i = 0; i < anfdmax; ++i)
		1553	for (w = anfds [i].head; w; w = w->next)
		1554	{
		1555	verify_watcher (EV_A_ (W)w);
		1556	assert (("inactive fd watcher on anfd list", ev_active (w) == 1));
		1557	assert (("fd mismatch between watcher and anfd", ((ev_io *)w)->fd == i));
		1558	}
		1559
		1560	assert (timermax >= timercnt);
		1561	verify_heap (EV_A_ timers, timercnt);
		1562
		1563	#if EV_PERIODIC_ENABLE
		1564	assert (periodicmax >= periodiccnt);
		1565	verify_heap (EV_A_ periodics, periodiccnt);
		1566	#endif
		1567
		1568	for (i = NUMPRI; i--; )
		1569	{
		1570	assert (pendingmax [i] >= pendingcnt [i]);
		1571	#if EV_IDLE_ENABLE
		1572	assert (idleall >= 0);
		1573	assert (idlemax [i] >= idlecnt [i]);
		1574	array_verify (EV_A_ (W *)idles [i], idlecnt [i]);
		1575	#endif
		1576	}
		1577
		1578	#if EV_FORK_ENABLE
		1579	assert (forkmax >= forkcnt);
		1580	array_verify (EV_A_ (W *)forks, forkcnt);
		1581	#endif
		1582
		1583	#if EV_ASYNC_ENABLE
		1584	assert (asyncmax >= asynccnt);
		1585	array_verify (EV_A_ (W *)asyncs, asynccnt);
		1586	#endif
		1587
		1588	assert (preparemax >= preparecnt);
		1589	array_verify (EV_A_ (W *)prepares, preparecnt);
		1590
		1591	assert (checkmax >= checkcnt);
		1592	array_verify (EV_A_ (W *)checks, checkcnt);
		1593
		1594	# if 0
		1595	for (w = (ev_child *)childs [chain & (EV_PID_HASHSIZE - 1)]; w; w = (ev_child *)((WL)w)->next)
		1596	for (signum = signalmax; signum--; ) if (signals [signum].gotsig)
1120	#endif	1597	# endif
		1598	#endif
		1599	}
		1600
		1601	#endif /* multiplicity */
1121		1602
1122	#if EV_MULTIPLICITY	1603	#if EV_MULTIPLICITY
1123	struct ev_loop *	1604	struct ev_loop *
1124	ev_default_loop_init (unsigned int flags)	1605	ev_default_loop_init (unsigned int flags)
1125	#else	1606	#else
1126	int	1607	int
1127	ev_default_loop (unsigned int flags)	1608	ev_default_loop (unsigned int flags)
1128	#endif	1609	#endif
1129	{	1610	{
1130	if (sigpipe [0] == sigpipe [1])
1131	if (pipe (sigpipe))
1132	return 0;
1133
1134	if (!ev_default_loop_ptr)	1611	if (!ev_default_loop_ptr)
1135	{	1612	{
1136	#if EV_MULTIPLICITY	1613	#if EV_MULTIPLICITY
1137	struct ev_loop *loop = ev_default_loop_ptr = &default_loop_struct;	1614	struct ev_loop *loop = ev_default_loop_ptr = &default_loop_struct;
1138	#else	1615	#else
…		…
1141		1618
1142	loop_init (EV_A_ flags);	1619	loop_init (EV_A_ flags);
1143		1620
1144	if (ev_backend (EV_A))	1621	if (ev_backend (EV_A))
1145	{	1622	{
1146	siginit (EV_A);
1147
1148	#ifndef _WIN32	1623	#ifndef _WIN32
1149	ev_signal_init (&childev, childcb, SIGCHLD);	1624	ev_signal_init (&childev, childcb, SIGCHLD);
1150	ev_set_priority (&childev, EV_MAXPRI);	1625	ev_set_priority (&childev, EV_MAXPRI);
1151	ev_signal_start (EV_A_ &childev);	1626	ev_signal_start (EV_A_ &childev);
1152	ev_unref (EV_A); /* child watcher should not keep loop alive */	1627	ev_unref (EV_A); /* child watcher should not keep loop alive */
…		…
1164	{	1639	{
1165	#if EV_MULTIPLICITY	1640	#if EV_MULTIPLICITY
1166	struct ev_loop *loop = ev_default_loop_ptr;	1641	struct ev_loop *loop = ev_default_loop_ptr;
1167	#endif	1642	#endif
1168		1643
		1644	ev_default_loop_ptr = 0;
		1645
1169	#ifndef _WIN32	1646	#ifndef _WIN32
1170	ev_ref (EV_A); /* child watcher */	1647	ev_ref (EV_A); /* child watcher */
1171	ev_signal_stop (EV_A_ &childev);	1648	ev_signal_stop (EV_A_ &childev);
1172	#endif	1649	#endif
1173		1650
1174	ev_ref (EV_A); /* signal watcher */
1175	ev_io_stop (EV_A_ &sigev);
1176
1177	close (sigpipe [0]); sigpipe [0] = 0;
1178	close (sigpipe [1]); sigpipe [1] = 0;
1179
1180	loop_destroy (EV_A);	1651	loop_destroy (EV_A);
1181	}	1652	}
1182		1653
1183	void	1654	void
1184	ev_default_fork (void)	1655	ev_default_fork (void)
…		…
1186	#if EV_MULTIPLICITY	1657	#if EV_MULTIPLICITY
1187	struct ev_loop *loop = ev_default_loop_ptr;	1658	struct ev_loop *loop = ev_default_loop_ptr;
1188	#endif	1659	#endif
1189		1660
1190	if (backend)	1661	if (backend)
1191	postfork = 1;	1662	postfork = 1; /* must be in line with ev_loop_fork */
1192	}	1663	}
1193		1664
1194	/*****************************************************************************/	1665	/*****************************************************************************/
1195		1666
1196	void	1667	void
…		…
1213	{	1684	{
1214	/*assert (("non-pending watcher on pending list", p->w->pending));*/	1685	/*assert (("non-pending watcher on pending list", p->w->pending));*/
1215		1686
1216	p->w->pending = 0;	1687	p->w->pending = 0;
1217	EV_CB_INVOKE (p->w, p->events);	1688	EV_CB_INVOKE (p->w, p->events);
		1689	EV_FREQUENT_CHECK;
1218	}	1690	}
1219	}	1691	}
1220	}	1692	}
1221
1222	void inline_size
1223	timers_reify (EV_P)
1224	{
1225	while (timercnt && ((WT)timers [0])->at <= mn_now)
1226	{
1227	ev_timer *w = (ev_timer *)timers [0];
1228
1229	/*assert (("inactive timer on timer heap detected", ev_is_active (w)));*/
1230
1231	/* first reschedule or stop timer */
1232	if (w->repeat)
1233	{
1234	assert (("negative ev_timer repeat value found while processing timers", w->repeat > 0.));
1235
1236	((WT)w)->at += w->repeat;
1237	if (((WT)w)->at < mn_now)
1238	((WT)w)->at = mn_now;
1239
1240	downheap (timers, timercnt, 0);
1241	}
1242	else
1243	ev_timer_stop (EV_A_ w); /* nonrepeating: stop timer */
1244
1245	ev_feed_event (EV_A_ (W)w, EV_TIMEOUT);
1246	}
1247	}
1248
1249	#if EV_PERIODIC_ENABLE
1250	void inline_size
1251	periodics_reify (EV_P)
1252	{
1253	while (periodiccnt && ((WT)periodics [0])->at <= ev_rt_now)
1254	{
1255	ev_periodic *w = (ev_periodic *)periodics [0];
1256
1257	/*assert (("inactive timer on periodic heap detected", ev_is_active (w)));*/
1258
1259	/* first reschedule or stop timer */
1260	if (w->reschedule_cb)
1261	{
1262	((WT)w)->at = w->reschedule_cb (w, ev_rt_now + TIME_EPSILON);
1263	assert (("ev_periodic reschedule callback returned time in the past", ((WT)w)->at > ev_rt_now));
1264	downheap (periodics, periodiccnt, 0);
1265	}
1266	else if (w->interval)
1267	{
1268	((WT)w)->at = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval;
1269	if (((WT)w)->at - ev_rt_now <= TIME_EPSILON) ((WT)w)->at += w->interval;
1270	assert (("ev_periodic timeout in the past detected while processing timers, negative interval?", ((WT)w)->at > ev_rt_now));
1271	downheap (periodics, periodiccnt, 0);
1272	}
1273	else
1274	ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */
1275
1276	ev_feed_event (EV_A_ (W)w, EV_PERIODIC);
1277	}
1278	}
1279
1280	static void noinline
1281	periodics_reschedule (EV_P)
1282	{
1283	int i;
1284
1285	/* adjust periodics after time jump */
1286	for (i = 0; i < periodiccnt; ++i)
1287	{
1288	ev_periodic *w = (ev_periodic *)periodics [i];
1289
1290	if (w->reschedule_cb)
1291	((WT)w)->at = w->reschedule_cb (w, ev_rt_now);
1292	else if (w->interval)
1293	((WT)w)->at = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval;
1294	}
1295
1296	/* now rebuild the heap */
1297	for (i = periodiccnt >> 1; i--; )
1298	downheap (periodics, periodiccnt, i);
1299	}
1300	#endif
1301		1693
1302	#if EV_IDLE_ENABLE	1694	#if EV_IDLE_ENABLE
1303	void inline_size	1695	void inline_size
1304	idle_reify (EV_P)	1696	idle_reify (EV_P)
1305	{	1697	{
…		…
1317	queue_events (EV_A_ (W *)idles [pri], idlecnt [pri], EV_IDLE);	1709	queue_events (EV_A_ (W *)idles [pri], idlecnt [pri], EV_IDLE);
1318	break;	1710	break;
1319	}	1711	}
1320	}	1712	}
1321	}	1713	}
		1714	}
		1715	#endif
		1716
		1717	void inline_size
		1718	timers_reify (EV_P)
		1719	{
		1720	EV_FREQUENT_CHECK;
		1721
		1722	while (timercnt && ANHE_at (timers [HEAP0]) < mn_now)
		1723	{
		1724	ev_timer *w = (ev_timer *)ANHE_w (timers [HEAP0]);
		1725
		1726	/*assert (("inactive timer on timer heap detected", ev_is_active (w)));*/
		1727
		1728	/* first reschedule or stop timer */
		1729	if (w->repeat)
		1730	{
		1731	ev_at (w) += w->repeat;
		1732	if (ev_at (w) < mn_now)
		1733	ev_at (w) = mn_now;
		1734
		1735	assert (("negative ev_timer repeat value found while processing timers", w->repeat > 0.));
		1736
		1737	ANHE_at_cache (timers [HEAP0]);
		1738	downheap (timers, timercnt, HEAP0);
		1739	}
		1740	else
		1741	ev_timer_stop (EV_A_ w); /* nonrepeating: stop timer */
		1742
		1743	EV_FREQUENT_CHECK;
		1744	ev_feed_event (EV_A_ (W)w, EV_TIMEOUT);
		1745	}
		1746	}
		1747
		1748	#if EV_PERIODIC_ENABLE
		1749	void inline_size
		1750	periodics_reify (EV_P)
		1751	{
		1752	EV_FREQUENT_CHECK;
		1753
		1754	while (periodiccnt && ANHE_at (periodics [HEAP0]) < ev_rt_now)
		1755	{
		1756	ev_periodic *w = (ev_periodic *)ANHE_w (periodics [HEAP0]);
		1757
		1758	/*assert (("inactive timer on periodic heap detected", ev_is_active (w)));*/
		1759
		1760	/* first reschedule or stop timer */
		1761	if (w->reschedule_cb)
		1762	{
		1763	ev_at (w) = w->reschedule_cb (w, ev_rt_now);
		1764
		1765	assert (("ev_periodic reschedule callback returned time in the past", ev_at (w) >= ev_rt_now));
		1766
		1767	ANHE_at_cache (periodics [HEAP0]);
		1768	downheap (periodics, periodiccnt, HEAP0);
		1769	}
		1770	else if (w->interval)
		1771	{
		1772	ev_at (w) = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval;
		1773	/* if next trigger time is not sufficiently in the future, put it there */
		1774	/* this might happen because of floating point inexactness */
		1775	if (ev_at (w) - ev_rt_now < TIME_EPSILON)
		1776	{
		1777	ev_at (w) += w->interval;
		1778
		1779	/* if interval is unreasonably low we might still have a time in the past */
		1780	/* so correct this. this will make the periodic very inexact, but the user */
		1781	/* has effectively asked to get triggered more often than possible */
		1782	if (ev_at (w) < ev_rt_now)
		1783	ev_at (w) = ev_rt_now;
		1784	}
		1785
		1786	ANHE_at_cache (periodics [HEAP0]);
		1787	downheap (periodics, periodiccnt, HEAP0);
		1788	}
		1789	else
		1790	ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */
		1791
		1792	EV_FREQUENT_CHECK;
		1793	ev_feed_event (EV_A_ (W)w, EV_PERIODIC);
		1794	}
		1795	}
		1796
		1797	static void noinline
		1798	periodics_reschedule (EV_P)
		1799	{
		1800	int i;
		1801
		1802	/* adjust periodics after time jump */
		1803	for (i = HEAP0; i < periodiccnt + HEAP0; ++i)
		1804	{
		1805	ev_periodic *w = (ev_periodic *)ANHE_w (periodics [i]);
		1806
		1807	if (w->reschedule_cb)
		1808	ev_at (w) = w->reschedule_cb (w, ev_rt_now);
		1809	else if (w->interval)
		1810	ev_at (w) = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval;
		1811
		1812	ANHE_at_cache (periodics [i]);
		1813	}
		1814
		1815	reheap (periodics, periodiccnt);
1322	}	1816	}
1323	#endif	1817	#endif
1324		1818
1325	void inline_speed	1819	void inline_speed
1326	time_update (EV_P_ ev_tstamp max_block)	1820	time_update (EV_P_ ev_tstamp max_block)
…		…
1355	*/	1849	*/
1356	for (i = 4; --i; )	1850	for (i = 4; --i; )
1357	{	1851	{
1358	rtmn_diff = ev_rt_now - mn_now;	1852	rtmn_diff = ev_rt_now - mn_now;
1359		1853
1360	if (fabs (odiff - rtmn_diff) < MIN_TIMEJUMP)	1854	if (expect_true (fabs (odiff - rtmn_diff) < MIN_TIMEJUMP))
1361	return; /* all is well */	1855	return; /* all is well */
1362		1856
1363	ev_rt_now = ev_time ();	1857	ev_rt_now = ev_time ();
1364	mn_now = get_clock ();	1858	mn_now = get_clock ();
1365	now_floor = mn_now;	1859	now_floor = mn_now;
…		…
1381	#if EV_PERIODIC_ENABLE	1875	#if EV_PERIODIC_ENABLE
1382	periodics_reschedule (EV_A);	1876	periodics_reschedule (EV_A);
1383	#endif	1877	#endif
1384	/* adjust timers. this is easy, as the offset is the same for all of them */	1878	/* adjust timers. this is easy, as the offset is the same for all of them */
1385	for (i = 0; i < timercnt; ++i)	1879	for (i = 0; i < timercnt; ++i)
		1880	{
		1881	ANHE *he = timers + i + HEAP0;
1386	((WT)timers [i])->at += ev_rt_now - mn_now;	1882	ANHE_w (*he)->at += ev_rt_now - mn_now;
		1883	ANHE_at_cache (*he);
		1884	}
1387	}	1885	}
1388		1886
1389	mn_now = ev_rt_now;	1887	mn_now = ev_rt_now;
1390	}	1888	}
1391	}	1889	}
…		…
1400	ev_unref (EV_P)	1898	ev_unref (EV_P)
1401	{	1899	{
1402	--activecnt;	1900	--activecnt;
1403	}	1901	}
1404		1902
		1903	void
		1904	ev_now_update (EV_P)
		1905	{
		1906	time_update (EV_A_ 1e100);
		1907	}
		1908
1405	static int loop_done;	1909	static int loop_done;
1406		1910
1407	void	1911	void
1408	ev_loop (EV_P_ int flags)	1912	ev_loop (EV_P_ int flags)
1409	{	1913	{
1410	loop_done = flags & (EVLOOP_ONESHOT | EVLOOP_NONBLOCK)	1914	loop_done = EVUNLOOP_CANCEL;
1411	? EVUNLOOP_ONE
1412	: EVUNLOOP_CANCEL;
1413		1915
1414	call_pending (EV_A); /* in case we recurse, ensure ordering stays nice and clean */	1916	call_pending (EV_A); /* in case we recurse, ensure ordering stays nice and clean */
1415		1917
1416	do	1918	do
1417	{	1919	{
		1920	#if EV_VERIFY >= 2
		1921	ev_loop_verify (EV_A);
		1922	#endif
		1923
1418	#ifndef _WIN32	1924	#ifndef _WIN32
1419	if (expect_false (curpid)) /* penalise the forking check even more */	1925	if (expect_false (curpid)) /* penalise the forking check even more */
1420	if (expect_false (getpid () != curpid))	1926	if (expect_false (getpid () != curpid))
1421	{	1927	{
1422	curpid = getpid ();	1928	curpid = getpid ();
…		…
1451	/* update fd-related kernel structures */	1957	/* update fd-related kernel structures */
1452	fd_reify (EV_A);	1958	fd_reify (EV_A);
1453		1959
1454	/* calculate blocking time */	1960	/* calculate blocking time */
1455	{	1961	{
1456	ev_tstamp block;	1962	ev_tstamp waittime = 0.;
		1963	ev_tstamp sleeptime = 0.;
1457		1964
1458	if (expect_false (flags & EVLOOP_NONBLOCK || idleall || !activecnt))	1965	if (expect_true (!(flags & EVLOOP_NONBLOCK || idleall || !activecnt)))
1459	block = 0.; /* do not block at all */
1460	else
1461	{	1966	{
1462	/* update time to cancel out callback processing overhead */	1967	/* update time to cancel out callback processing overhead */
1463	time_update (EV_A_ 1e100);	1968	time_update (EV_A_ 1e100);
1464		1969
1465	block = MAX_BLOCKTIME;	1970	waittime = MAX_BLOCKTIME;
1466		1971
1467	if (timercnt)	1972	if (timercnt)
1468	{	1973	{
1469	ev_tstamp to = ((WT)timers [0])->at - mn_now + backend_fudge;	1974	ev_tstamp to = ANHE_at (timers [HEAP0]) - mn_now + backend_fudge;
1470	if (block > to) block = to;	1975	if (waittime > to) waittime = to;
1471	}	1976	}
1472		1977
1473	#if EV_PERIODIC_ENABLE	1978	#if EV_PERIODIC_ENABLE
1474	if (periodiccnt)	1979	if (periodiccnt)
1475	{	1980	{
1476	ev_tstamp to = ((WT)periodics [0])->at - ev_rt_now + backend_fudge;	1981	ev_tstamp to = ANHE_at (periodics [HEAP0]) - ev_rt_now + backend_fudge;
1477	if (block > to) block = to;	1982	if (waittime > to) waittime = to;
1478	}	1983	}
1479	#endif	1984	#endif
1480		1985
1481	if (expect_false (block < 0.)) block = 0.;	1986	if (expect_false (waittime < timeout_blocktime))
		1987	waittime = timeout_blocktime;
		1988
		1989	sleeptime = waittime - backend_fudge;
		1990
		1991	if (expect_true (sleeptime > io_blocktime))
		1992	sleeptime = io_blocktime;
		1993
		1994	if (sleeptime)
		1995	{
		1996	ev_sleep (sleeptime);
		1997	waittime -= sleeptime;
		1998	}
1482	}	1999	}
1483		2000
1484	++loop_count;	2001	++loop_count;
1485	backend_poll (EV_A_ block);	2002	backend_poll (EV_A_ waittime);
1486		2003
1487	/* update ev_rt_now, do magic */	2004	/* update ev_rt_now, do magic */
1488	time_update (EV_A_ block);	2005	time_update (EV_A_ waittime + sleeptime);
1489	}	2006	}
1490		2007
1491	/* queue pending timers and reschedule them */	2008	/* queue pending timers and reschedule them */
1492	timers_reify (EV_A); /* relative timers called last */	2009	timers_reify (EV_A); /* relative timers called last */
1493	#if EV_PERIODIC_ENABLE	2010	#if EV_PERIODIC_ENABLE
…		…
1502	/* queue check watchers, to be executed first */	2019	/* queue check watchers, to be executed first */
1503	if (expect_false (checkcnt))	2020	if (expect_false (checkcnt))
1504	queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK);	2021	queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK);
1505		2022
1506	call_pending (EV_A);	2023	call_pending (EV_A);
1507
1508	}	2024	}
1509	while (expect_true (activecnt && !loop_done));	2025	while (expect_true (
		2026	activecnt
		2027	&& !loop_done
		2028	&& !(flags & (EVLOOP_ONESHOT | EVLOOP_NONBLOCK))
		2029	));
1510		2030
1511	if (loop_done == EVUNLOOP_ONE)	2031	if (loop_done == EVUNLOOP_ONE)
1512	loop_done = EVUNLOOP_CANCEL;	2032	loop_done = EVUNLOOP_CANCEL;
1513	}	2033	}
1514		2034
…		…
1602		2122
1603	if (expect_false (ev_is_active (w)))	2123	if (expect_false (ev_is_active (w)))
1604	return;	2124	return;
1605		2125
1606	assert (("ev_io_start called with negative fd", fd >= 0));	2126	assert (("ev_io_start called with negative fd", fd >= 0));
		2127	assert (("ev_io start called with illegal event mask", !(w->events & ~(EV_IOFDSET | EV_READ | EV_WRITE))));
		2128
		2129	EV_FREQUENT_CHECK;
1607		2130
1608	ev_start (EV_A_ (W)w, 1);	2131	ev_start (EV_A_ (W)w, 1);
1609	array_needsize (ANFD, anfds, anfdmax, fd + 1, anfds_init);	2132	array_needsize (ANFD, anfds, anfdmax, fd + 1, array_init_zero);
1610	wlist_add (&anfds[fd].head, (WL)w);	2133	wlist_add (&anfds[fd].head, (WL)w);
1611		2134
1612	fd_change (EV_A_ fd, w->events & EV_IOFDSET | 1);	2135	fd_change (EV_A_ fd, w->events & EV_IOFDSET | 1);
1613	w->events &= ~EV_IOFDSET;	2136	w->events &= ~EV_IOFDSET;
		2137
		2138	EV_FREQUENT_CHECK;
1614	}	2139	}
1615		2140
1616	void noinline	2141	void noinline
1617	ev_io_stop (EV_P_ ev_io *w)	2142	ev_io_stop (EV_P_ ev_io *w)
1618	{	2143	{
1619	clear_pending (EV_A_ (W)w);	2144	clear_pending (EV_A_ (W)w);
1620	if (expect_false (!ev_is_active (w)))	2145	if (expect_false (!ev_is_active (w)))
1621	return;	2146	return;
1622		2147
1623	assert (("ev_io_start called with illegal fd (must stay constant after start!)", w->fd >= 0 && w->fd < anfdmax));	2148	assert (("ev_io_stop called with illegal fd (must stay constant after start!)", w->fd >= 0 && w->fd < anfdmax));
		2149
		2150	EV_FREQUENT_CHECK;
1624		2151
1625	wlist_del (&anfds[w->fd].head, (WL)w);	2152	wlist_del (&anfds[w->fd].head, (WL)w);
1626	ev_stop (EV_A_ (W)w);	2153	ev_stop (EV_A_ (W)w);
1627		2154
1628	fd_change (EV_A_ w->fd, 1);	2155	fd_change (EV_A_ w->fd, 1);
		2156
		2157	EV_FREQUENT_CHECK;
1629	}	2158	}
1630		2159
1631	void noinline	2160	void noinline
1632	ev_timer_start (EV_P_ ev_timer *w)	2161	ev_timer_start (EV_P_ ev_timer *w)
1633	{	2162	{
1634	if (expect_false (ev_is_active (w)))	2163	if (expect_false (ev_is_active (w)))
1635	return;	2164	return;
1636		2165
1637	((WT)w)->at += mn_now;	2166	ev_at (w) += mn_now;
1638		2167
1639	assert (("ev_timer_start called with negative timer repeat value", w->repeat >= 0.));	2168	assert (("ev_timer_start called with negative timer repeat value", w->repeat >= 0.));
1640		2169
		2170	EV_FREQUENT_CHECK;
		2171
		2172	++timercnt;
1641	ev_start (EV_A_ (W)w, ++timercnt);	2173	ev_start (EV_A_ (W)w, timercnt + HEAP0 - 1);
1642	array_needsize (WT, timers, timermax, timercnt, EMPTY2);	2174	array_needsize (ANHE, timers, timermax, ev_active (w) + 1, EMPTY2);
1643	timers [timercnt - 1] = (WT)w;	2175	ANHE_w (timers [ev_active (w)]) = (WT)w;
1644	upheap (timers, timercnt - 1);	2176	ANHE_at_cache (timers [ev_active (w)]);
		2177	upheap (timers, ev_active (w));
1645		2178
		2179	EV_FREQUENT_CHECK;
		2180
1646	/*assert (("internal timer heap corruption", timers [((W)w)->active - 1] == w));*/	2181	/*assert (("internal timer heap corruption", timers [ev_active (w)] == (WT)w));*/
1647	}	2182	}
1648		2183
1649	void noinline	2184	void noinline
1650	ev_timer_stop (EV_P_ ev_timer *w)	2185	ev_timer_stop (EV_P_ ev_timer *w)
1651	{	2186	{
1652	clear_pending (EV_A_ (W)w);	2187	clear_pending (EV_A_ (W)w);
1653	if (expect_false (!ev_is_active (w)))	2188	if (expect_false (!ev_is_active (w)))
1654	return;	2189	return;
1655		2190
1656	assert (("internal timer heap corruption", timers [((W)w)->active - 1] == (WT)w));	2191	EV_FREQUENT_CHECK;
1657		2192
1658	{	2193	{
1659	int active = ((W)w)->active;	2194	int active = ev_active (w);
1660		2195
		2196	assert (("internal timer heap corruption", ANHE_w (timers [active]) == (WT)w));
		2197
		2198	--timercnt;
		2199
1661	if (expect_true (--active < --timercnt))	2200	if (expect_true (active < timercnt + HEAP0))
1662	{	2201	{
1663	timers [active] = timers [timercnt];	2202	timers [active] = timers [timercnt + HEAP0];
1664	adjustheap (timers, timercnt, active);	2203	adjustheap (timers, timercnt, active);
1665	}	2204	}
1666	}	2205	}
1667		2206
1668	((WT)w)->at -= mn_now;	2207	EV_FREQUENT_CHECK;
		2208
		2209	ev_at (w) -= mn_now;
1669		2210
1670	ev_stop (EV_A_ (W)w);	2211	ev_stop (EV_A_ (W)w);
1671	}	2212	}
1672		2213
1673	void noinline	2214	void noinline
1674	ev_timer_again (EV_P_ ev_timer *w)	2215	ev_timer_again (EV_P_ ev_timer *w)
1675	{	2216	{
		2217	EV_FREQUENT_CHECK;
		2218
1676	if (ev_is_active (w))	2219	if (ev_is_active (w))
1677	{	2220	{
1678	if (w->repeat)	2221	if (w->repeat)
1679	{	2222	{
1680	((WT)w)->at = mn_now + w->repeat;	2223	ev_at (w) = mn_now + w->repeat;
		2224	ANHE_at_cache (timers [ev_active (w)]);
1681	adjustheap (timers, timercnt, ((W)w)->active - 1);	2225	adjustheap (timers, timercnt, ev_active (w));
1682	}	2226	}
1683	else	2227	else
1684	ev_timer_stop (EV_A_ w);	2228	ev_timer_stop (EV_A_ w);
1685	}	2229	}
1686	else if (w->repeat)	2230	else if (w->repeat)
1687	{	2231	{
1688	w->at = w->repeat;	2232	ev_at (w) = w->repeat;
1689	ev_timer_start (EV_A_ w);	2233	ev_timer_start (EV_A_ w);
1690	}	2234	}
		2235
		2236	EV_FREQUENT_CHECK;
1691	}	2237	}
1692		2238
1693	#if EV_PERIODIC_ENABLE	2239	#if EV_PERIODIC_ENABLE
1694	void noinline	2240	void noinline
1695	ev_periodic_start (EV_P_ ev_periodic *w)	2241	ev_periodic_start (EV_P_ ev_periodic *w)
1696	{	2242	{
1697	if (expect_false (ev_is_active (w)))	2243	if (expect_false (ev_is_active (w)))
1698	return;	2244	return;
1699		2245
1700	if (w->reschedule_cb)	2246	if (w->reschedule_cb)
1701	((WT)w)->at = w->reschedule_cb (w, ev_rt_now);	2247	ev_at (w) = w->reschedule_cb (w, ev_rt_now);
1702	else if (w->interval)	2248	else if (w->interval)
1703	{	2249	{
1704	assert (("ev_periodic_start called with negative interval value", w->interval >= 0.));	2250	assert (("ev_periodic_start called with negative interval value", w->interval >= 0.));
1705	/* this formula differs from the one in periodic_reify because we do not always round up */	2251	/* this formula differs from the one in periodic_reify because we do not always round up */
1706	((WT)w)->at = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval;	2252	ev_at (w) = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval;
1707	}	2253	}
1708	else	2254	else
1709	((WT)w)->at = w->offset;	2255	ev_at (w) = w->offset;
1710		2256
		2257	EV_FREQUENT_CHECK;
		2258
		2259	++periodiccnt;
1711	ev_start (EV_A_ (W)w, ++periodiccnt);	2260	ev_start (EV_A_ (W)w, periodiccnt + HEAP0 - 1);
1712	array_needsize (WT, periodics, periodicmax, periodiccnt, EMPTY2);	2261	array_needsize (ANHE, periodics, periodicmax, ev_active (w) + 1, EMPTY2);
1713	periodics [periodiccnt - 1] = (WT)w;	2262	ANHE_w (periodics [ev_active (w)]) = (WT)w;
1714	upheap (periodics, periodiccnt - 1);	2263	ANHE_at_cache (periodics [ev_active (w)]);
		2264	upheap (periodics, ev_active (w));
1715		2265
		2266	EV_FREQUENT_CHECK;
		2267
1716	/*assert (("internal periodic heap corruption", periodics [((W)w)->active - 1] == w));*/	2268	/*assert (("internal periodic heap corruption", ANHE_w (periodics [ev_active (w)]) == (WT)w));*/
1717	}	2269	}
1718		2270
1719	void noinline	2271	void noinline
1720	ev_periodic_stop (EV_P_ ev_periodic *w)	2272	ev_periodic_stop (EV_P_ ev_periodic *w)
1721	{	2273	{
1722	clear_pending (EV_A_ (W)w);	2274	clear_pending (EV_A_ (W)w);
1723	if (expect_false (!ev_is_active (w)))	2275	if (expect_false (!ev_is_active (w)))
1724	return;	2276	return;
1725		2277
1726	assert (("internal periodic heap corruption", periodics [((W)w)->active - 1] == (WT)w));	2278	EV_FREQUENT_CHECK;
1727		2279
1728	{	2280	{
1729	int active = ((W)w)->active;	2281	int active = ev_active (w);
1730		2282
		2283	assert (("internal periodic heap corruption", ANHE_w (periodics [active]) == (WT)w));
		2284
		2285	--periodiccnt;
		2286
1731	if (expect_true (--active < --periodiccnt))	2287	if (expect_true (active < periodiccnt + HEAP0))
1732	{	2288	{
1733	periodics [active] = periodics [periodiccnt];	2289	periodics [active] = periodics [periodiccnt + HEAP0];
1734	adjustheap (periodics, periodiccnt, active);	2290	adjustheap (periodics, periodiccnt, active);
1735	}	2291	}
1736	}	2292	}
1737		2293
		2294	EV_FREQUENT_CHECK;
		2295
1738	ev_stop (EV_A_ (W)w);	2296	ev_stop (EV_A_ (W)w);
1739	}	2297	}
1740		2298
1741	void noinline	2299	void noinline
1742	ev_periodic_again (EV_P_ ev_periodic *w)	2300	ev_periodic_again (EV_P_ ev_periodic *w)
…		…
1759	#endif	2317	#endif
1760	if (expect_false (ev_is_active (w)))	2318	if (expect_false (ev_is_active (w)))
1761	return;	2319	return;
1762		2320
1763	assert (("ev_signal_start called with illegal signal number", w->signum > 0));	2321	assert (("ev_signal_start called with illegal signal number", w->signum > 0));
		2322
		2323	evpipe_init (EV_A);
		2324
		2325	EV_FREQUENT_CHECK;
1764		2326
1765	{	2327	{
1766	#ifndef _WIN32	2328	#ifndef _WIN32
1767	sigset_t full, prev;	2329	sigset_t full, prev;
1768	sigfillset (&full);	2330	sigfillset (&full);
1769	sigprocmask (SIG_SETMASK, &full, &prev);	2331	sigprocmask (SIG_SETMASK, &full, &prev);
1770	#endif	2332	#endif
1771		2333
1772	array_needsize (ANSIG, signals, signalmax, w->signum, signals_init);	2334	array_needsize (ANSIG, signals, signalmax, w->signum, array_init_zero);
1773		2335
1774	#ifndef _WIN32	2336	#ifndef _WIN32
1775	sigprocmask (SIG_SETMASK, &prev, 0);	2337	sigprocmask (SIG_SETMASK, &prev, 0);
1776	#endif	2338	#endif
1777	}	2339	}
…		…
1780	wlist_add (&signals [w->signum - 1].head, (WL)w);	2342	wlist_add (&signals [w->signum - 1].head, (WL)w);
1781		2343
1782	if (!((WL)w)->next)	2344	if (!((WL)w)->next)
1783	{	2345	{
1784	#if _WIN32	2346	#if _WIN32
1785	signal (w->signum, sighandler);	2347	signal (w->signum, ev_sighandler);
1786	#else	2348	#else
1787	struct sigaction sa;	2349	struct sigaction sa;
1788	sa.sa_handler = sighandler;	2350	sa.sa_handler = ev_sighandler;
1789	sigfillset (&sa.sa_mask);	2351	sigfillset (&sa.sa_mask);
1790	sa.sa_flags = SA_RESTART; /* if restarting works we save one iteration */	2352	sa.sa_flags = SA_RESTART; /* if restarting works we save one iteration */
1791	sigaction (w->signum, &sa, 0);	2353	sigaction (w->signum, &sa, 0);
1792	#endif	2354	#endif
1793	}	2355	}
		2356
		2357	EV_FREQUENT_CHECK;
1794	}	2358	}
1795		2359
1796	void noinline	2360	void noinline
1797	ev_signal_stop (EV_P_ ev_signal *w)	2361	ev_signal_stop (EV_P_ ev_signal *w)
1798	{	2362	{
1799	clear_pending (EV_A_ (W)w);	2363	clear_pending (EV_A_ (W)w);
1800	if (expect_false (!ev_is_active (w)))	2364	if (expect_false (!ev_is_active (w)))
1801	return;	2365	return;
1802		2366
		2367	EV_FREQUENT_CHECK;
		2368
1803	wlist_del (&signals [w->signum - 1].head, (WL)w);	2369	wlist_del (&signals [w->signum - 1].head, (WL)w);
1804	ev_stop (EV_A_ (W)w);	2370	ev_stop (EV_A_ (W)w);
1805		2371
1806	if (!signals [w->signum - 1].head)	2372	if (!signals [w->signum - 1].head)
1807	signal (w->signum, SIG_DFL);	2373	signal (w->signum, SIG_DFL);
		2374
		2375	EV_FREQUENT_CHECK;
1808	}	2376	}
1809		2377
1810	void	2378	void
1811	ev_child_start (EV_P_ ev_child *w)	2379	ev_child_start (EV_P_ ev_child *w)
1812	{	2380	{
…		…
1814	assert (("child watchers are only supported in the default loop", loop == ev_default_loop_ptr));	2382	assert (("child watchers are only supported in the default loop", loop == ev_default_loop_ptr));
1815	#endif	2383	#endif
1816	if (expect_false (ev_is_active (w)))	2384	if (expect_false (ev_is_active (w)))
1817	return;	2385	return;
1818		2386
		2387	EV_FREQUENT_CHECK;
		2388
1819	ev_start (EV_A_ (W)w, 1);	2389	ev_start (EV_A_ (W)w, 1);
1820	wlist_add (&childs [w->pid & (EV_PID_HASHSIZE - 1)], (WL)w);	2390	wlist_add (&childs [w->pid & (EV_PID_HASHSIZE - 1)], (WL)w);
		2391
		2392	EV_FREQUENT_CHECK;
1821	}	2393	}
1822		2394
1823	void	2395	void
1824	ev_child_stop (EV_P_ ev_child *w)	2396	ev_child_stop (EV_P_ ev_child *w)
1825	{	2397	{
1826	clear_pending (EV_A_ (W)w);	2398	clear_pending (EV_A_ (W)w);
1827	if (expect_false (!ev_is_active (w)))	2399	if (expect_false (!ev_is_active (w)))
1828	return;	2400	return;
1829		2401
		2402	EV_FREQUENT_CHECK;
		2403
1830	wlist_del (&childs [w->pid & (EV_PID_HASHSIZE - 1)], (WL)w);	2404	wlist_del (&childs [w->pid & (EV_PID_HASHSIZE - 1)], (WL)w);
1831	ev_stop (EV_A_ (W)w);	2405	ev_stop (EV_A_ (W)w);
		2406
		2407	EV_FREQUENT_CHECK;
1832	}	2408	}
1833		2409
1834	#if EV_STAT_ENABLE	2410	#if EV_STAT_ENABLE
1835		2411
1836	# ifdef _WIN32	2412	# ifdef _WIN32
…		…
1854	if (w->wd < 0)	2430	if (w->wd < 0)
1855	{	2431	{
1856	ev_timer_start (EV_A_ &w->timer); /* this is not race-free, so we still need to recheck periodically */	2432	ev_timer_start (EV_A_ &w->timer); /* this is not race-free, so we still need to recheck periodically */
1857		2433
1858	/* monitor some parent directory for speedup hints */	2434	/* monitor some parent directory for speedup hints */
		2435	/* note that exceeding the hardcoded limit is not a correctness issue, */
		2436	/* but an efficiency issue only */
1859	if ((errno == ENOENT || errno == EACCES) && strlen (w->path) < 4096)	2437	if ((errno == ENOENT || errno == EACCES) && strlen (w->path) < 4096)
1860	{	2438	{
1861	char path [4096];	2439	char path [4096];
1862	strcpy (path, w->path);	2440	strcpy (path, w->path);
1863		2441
…		…
1903		2481
1904	static void noinline	2482	static void noinline
1905	infy_wd (EV_P_ int slot, int wd, struct inotify_event *ev)	2483	infy_wd (EV_P_ int slot, int wd, struct inotify_event *ev)
1906	{	2484	{
1907	if (slot < 0)	2485	if (slot < 0)
1908	/* overflow, need to check for all hahs slots */	2486	/* overflow, need to check for all hash slots */
1909	for (slot = 0; slot < EV_INOTIFY_HASHSIZE; ++slot)	2487	for (slot = 0; slot < EV_INOTIFY_HASHSIZE; ++slot)
1910	infy_wd (EV_A_ slot, wd, ev);	2488	infy_wd (EV_A_ slot, wd, ev);
1911	else	2489	else
1912	{	2490	{
1913	WL w_;	2491	WL w_;
…		…
1947	infy_init (EV_P)	2525	infy_init (EV_P)
1948	{	2526	{
1949	if (fs_fd != -2)	2527	if (fs_fd != -2)
1950	return;	2528	return;
1951		2529
		2530	/* kernels < 2.6.25 are borked
		2531	* http://www.ussg.indiana.edu/hypermail/linux/kernel/0711.3/1208.html
		2532	*/
		2533	{
		2534	struct utsname buf;
		2535	int major, minor, micro;
		2536
		2537	fs_fd = -1;
		2538
		2539	if (uname (&buf))
		2540	return;
		2541
		2542	if (sscanf (buf.release, "%d.%d.%d", &major, &minor, &micro) != 3)
		2543	return;
		2544
		2545	if (major < 2
		2546	|| (major == 2 && minor < 6)
		2547	|| (major == 2 && minor == 6 && micro < 25))
		2548	return;
		2549	}
		2550
1952	fs_fd = inotify_init ();	2551	fs_fd = inotify_init ();
1953		2552
1954	if (fs_fd >= 0)	2553	if (fs_fd >= 0)
1955	{	2554	{
1956	ev_io_init (&fs_w, infy_cb, fs_fd, EV_READ);	2555	ev_io_init (&fs_w, infy_cb, fs_fd, EV_READ);
…		…
1985	if (fs_fd >= 0)	2584	if (fs_fd >= 0)
1986	infy_add (EV_A_ w); /* re-add, no matter what */	2585	infy_add (EV_A_ w); /* re-add, no matter what */
1987	else	2586	else
1988	ev_timer_start (EV_A_ &w->timer);	2587	ev_timer_start (EV_A_ &w->timer);
1989	}	2588	}
1990
1991	}	2589	}
1992	}	2590	}
1993		2591
		2592	#endif
		2593
		2594	#ifdef _WIN32
		2595	# define EV_LSTAT(p,b) _stati64 (p, b)
		2596	#else
		2597	# define EV_LSTAT(p,b) lstat (p, b)
1994	#endif	2598	#endif
1995		2599
1996	void	2600	void
1997	ev_stat_stat (EV_P_ ev_stat *w)	2601	ev_stat_stat (EV_P_ ev_stat *w)
1998	{	2602	{
…		…
2025	|| w->prev.st_atime != w->attr.st_atime	2629	|| w->prev.st_atime != w->attr.st_atime
2026	|| w->prev.st_mtime != w->attr.st_mtime	2630	|| w->prev.st_mtime != w->attr.st_mtime
2027	|| w->prev.st_ctime != w->attr.st_ctime	2631	|| w->prev.st_ctime != w->attr.st_ctime
2028	) {	2632	) {
2029	#if EV_USE_INOTIFY	2633	#if EV_USE_INOTIFY
		2634	if (fs_fd >= 0)
		2635	{
2030	infy_del (EV_A_ w);	2636	infy_del (EV_A_ w);
2031	infy_add (EV_A_ w);	2637	infy_add (EV_A_ w);
2032	ev_stat_stat (EV_A_ w); /* avoid race... */	2638	ev_stat_stat (EV_A_ w); /* avoid race... */
		2639	}
2033	#endif	2640	#endif
2034		2641
2035	ev_feed_event (EV_A_ w, EV_STAT);	2642	ev_feed_event (EV_A_ w, EV_STAT);
2036	}	2643	}
2037	}	2644	}
…		…
2062	else	2669	else
2063	#endif	2670	#endif
2064	ev_timer_start (EV_A_ &w->timer);	2671	ev_timer_start (EV_A_ &w->timer);
2065		2672
2066	ev_start (EV_A_ (W)w, 1);	2673	ev_start (EV_A_ (W)w, 1);
		2674
		2675	EV_FREQUENT_CHECK;
2067	}	2676	}
2068		2677
2069	void	2678	void
2070	ev_stat_stop (EV_P_ ev_stat *w)	2679	ev_stat_stop (EV_P_ ev_stat *w)
2071	{	2680	{
2072	clear_pending (EV_A_ (W)w);	2681	clear_pending (EV_A_ (W)w);
2073	if (expect_false (!ev_is_active (w)))	2682	if (expect_false (!ev_is_active (w)))
2074	return;	2683	return;
2075		2684
		2685	EV_FREQUENT_CHECK;
		2686
2076	#if EV_USE_INOTIFY	2687	#if EV_USE_INOTIFY
2077	infy_del (EV_A_ w);	2688	infy_del (EV_A_ w);
2078	#endif	2689	#endif
2079	ev_timer_stop (EV_A_ &w->timer);	2690	ev_timer_stop (EV_A_ &w->timer);
2080		2691
2081	ev_stop (EV_A_ (W)w);	2692	ev_stop (EV_A_ (W)w);
		2693
		2694	EV_FREQUENT_CHECK;
2082	}	2695	}
2083	#endif	2696	#endif
2084		2697
2085	#if EV_IDLE_ENABLE	2698	#if EV_IDLE_ENABLE
2086	void	2699	void
…		…
2088	{	2701	{
2089	if (expect_false (ev_is_active (w)))	2702	if (expect_false (ev_is_active (w)))
2090	return;	2703	return;
2091		2704
2092	pri_adjust (EV_A_ (W)w);	2705	pri_adjust (EV_A_ (W)w);
		2706
		2707	EV_FREQUENT_CHECK;
2093		2708
2094	{	2709	{
2095	int active = ++idlecnt [ABSPRI (w)];	2710	int active = ++idlecnt [ABSPRI (w)];
2096		2711
2097	++idleall;	2712	++idleall;
2098	ev_start (EV_A_ (W)w, active);	2713	ev_start (EV_A_ (W)w, active);
2099		2714
2100	array_needsize (ev_idle *, idles [ABSPRI (w)], idlemax [ABSPRI (w)], active, EMPTY2);	2715	array_needsize (ev_idle *, idles [ABSPRI (w)], idlemax [ABSPRI (w)], active, EMPTY2);
2101	idles [ABSPRI (w)][active - 1] = w;	2716	idles [ABSPRI (w)][active - 1] = w;
2102	}	2717	}
		2718
		2719	EV_FREQUENT_CHECK;
2103	}	2720	}
2104		2721
2105	void	2722	void
2106	ev_idle_stop (EV_P_ ev_idle *w)	2723	ev_idle_stop (EV_P_ ev_idle *w)
2107	{	2724	{
2108	clear_pending (EV_A_ (W)w);	2725	clear_pending (EV_A_ (W)w);
2109	if (expect_false (!ev_is_active (w)))	2726	if (expect_false (!ev_is_active (w)))
2110	return;	2727	return;
2111		2728
		2729	EV_FREQUENT_CHECK;
		2730
2112	{	2731	{
2113	int active = ((W)w)->active;	2732	int active = ev_active (w);
2114		2733
2115	idles [ABSPRI (w)][active - 1] = idles [ABSPRI (w)][--idlecnt [ABSPRI (w)]];	2734	idles [ABSPRI (w)][active - 1] = idles [ABSPRI (w)][--idlecnt [ABSPRI (w)]];
2116	((W)idles [ABSPRI (w)][active - 1])->active = active;	2735	ev_active (idles [ABSPRI (w)][active - 1]) = active;
2117		2736
2118	ev_stop (EV_A_ (W)w);	2737	ev_stop (EV_A_ (W)w);
2119	--idleall;	2738	--idleall;
2120	}	2739	}
		2740
		2741	EV_FREQUENT_CHECK;
2121	}	2742	}
2122	#endif	2743	#endif
2123		2744
2124	void	2745	void
2125	ev_prepare_start (EV_P_ ev_prepare *w)	2746	ev_prepare_start (EV_P_ ev_prepare *w)
2126	{	2747	{
2127	if (expect_false (ev_is_active (w)))	2748	if (expect_false (ev_is_active (w)))
2128	return;	2749	return;
		2750
		2751	EV_FREQUENT_CHECK;
2129		2752
2130	ev_start (EV_A_ (W)w, ++preparecnt);	2753	ev_start (EV_A_ (W)w, ++preparecnt);
2131	array_needsize (ev_prepare *, prepares, preparemax, preparecnt, EMPTY2);	2754	array_needsize (ev_prepare *, prepares, preparemax, preparecnt, EMPTY2);
2132	prepares [preparecnt - 1] = w;	2755	prepares [preparecnt - 1] = w;
		2756
		2757	EV_FREQUENT_CHECK;
2133	}	2758	}
2134		2759
2135	void	2760	void
2136	ev_prepare_stop (EV_P_ ev_prepare *w)	2761	ev_prepare_stop (EV_P_ ev_prepare *w)
2137	{	2762	{
2138	clear_pending (EV_A_ (W)w);	2763	clear_pending (EV_A_ (W)w);
2139	if (expect_false (!ev_is_active (w)))	2764	if (expect_false (!ev_is_active (w)))
2140	return;	2765	return;
2141		2766
		2767	EV_FREQUENT_CHECK;
		2768
2142	{	2769	{
2143	int active = ((W)w)->active;	2770	int active = ev_active (w);
		2771
2144	prepares [active - 1] = prepares [--preparecnt];	2772	prepares [active - 1] = prepares [--preparecnt];
2145	((W)prepares [active - 1])->active = active;	2773	ev_active (prepares [active - 1]) = active;
2146	}	2774	}
2147		2775
2148	ev_stop (EV_A_ (W)w);	2776	ev_stop (EV_A_ (W)w);
		2777
		2778	EV_FREQUENT_CHECK;
2149	}	2779	}
2150		2780
2151	void	2781	void
2152	ev_check_start (EV_P_ ev_check *w)	2782	ev_check_start (EV_P_ ev_check *w)
2153	{	2783	{
2154	if (expect_false (ev_is_active (w)))	2784	if (expect_false (ev_is_active (w)))
2155	return;	2785	return;
		2786
		2787	EV_FREQUENT_CHECK;
2156		2788
2157	ev_start (EV_A_ (W)w, ++checkcnt);	2789	ev_start (EV_A_ (W)w, ++checkcnt);
2158	array_needsize (ev_check *, checks, checkmax, checkcnt, EMPTY2);	2790	array_needsize (ev_check *, checks, checkmax, checkcnt, EMPTY2);
2159	checks [checkcnt - 1] = w;	2791	checks [checkcnt - 1] = w;
		2792
		2793	EV_FREQUENT_CHECK;
2160	}	2794	}
2161		2795
2162	void	2796	void
2163	ev_check_stop (EV_P_ ev_check *w)	2797	ev_check_stop (EV_P_ ev_check *w)
2164	{	2798	{
2165	clear_pending (EV_A_ (W)w);	2799	clear_pending (EV_A_ (W)w);
2166	if (expect_false (!ev_is_active (w)))	2800	if (expect_false (!ev_is_active (w)))
2167	return;	2801	return;
2168		2802
		2803	EV_FREQUENT_CHECK;
		2804
2169	{	2805	{
2170	int active = ((W)w)->active;	2806	int active = ev_active (w);
		2807
2171	checks [active - 1] = checks [--checkcnt];	2808	checks [active - 1] = checks [--checkcnt];
2172	((W)checks [active - 1])->active = active;	2809	ev_active (checks [active - 1]) = active;
2173	}	2810	}
2174		2811
2175	ev_stop (EV_A_ (W)w);	2812	ev_stop (EV_A_ (W)w);
		2813
		2814	EV_FREQUENT_CHECK;
2176	}	2815	}
2177		2816
2178	#if EV_EMBED_ENABLE	2817	#if EV_EMBED_ENABLE
2179	void noinline	2818	void noinline
2180	ev_embed_sweep (EV_P_ ev_embed *w)	2819	ev_embed_sweep (EV_P_ ev_embed *w)
2181	{	2820	{
2182	ev_loop (w->loop, EVLOOP_NONBLOCK);	2821	ev_loop (w->other, EVLOOP_NONBLOCK);
2183	}	2822	}
2184		2823
2185	static void	2824	static void
2186	embed_cb (EV_P_ ev_io *io, int revents)	2825	embed_io_cb (EV_P_ ev_io *io, int revents)
2187	{	2826	{
2188	ev_embed *w = (ev_embed *)(((char *)io) - offsetof (ev_embed, io));	2827	ev_embed *w = (ev_embed *)(((char *)io) - offsetof (ev_embed, io));
2189		2828
2190	if (ev_cb (w))	2829	if (ev_cb (w))
2191	ev_feed_event (EV_A_ (W)w, EV_EMBED);	2830	ev_feed_event (EV_A_ (W)w, EV_EMBED);
2192	else	2831	else
2193	ev_embed_sweep (loop, w);	2832	ev_loop (w->other, EVLOOP_NONBLOCK);
2194	}	2833	}
		2834
		2835	static void
		2836	embed_prepare_cb (EV_P_ ev_prepare *prepare, int revents)
		2837	{
		2838	ev_embed *w = (ev_embed *)(((char *)prepare) - offsetof (ev_embed, prepare));
		2839
		2840	{
		2841	struct ev_loop *loop = w->other;
		2842
		2843	while (fdchangecnt)
		2844	{
		2845	fd_reify (EV_A);
		2846	ev_loop (EV_A_ EVLOOP_NONBLOCK);
		2847	}
		2848	}
		2849	}
		2850
		2851	static void
		2852	embed_fork_cb (EV_P_ ev_fork *fork_w, int revents)
		2853	{
		2854	ev_embed *w = (ev_embed *)(((char *)fork_w) - offsetof (ev_embed, fork));
		2855
		2856	{
		2857	struct ev_loop *loop = w->other;
		2858
		2859	ev_loop_fork (EV_A);
		2860	}
		2861	}
		2862
		2863	#if 0
		2864	static void
		2865	embed_idle_cb (EV_P_ ev_idle *idle, int revents)
		2866	{
		2867	ev_idle_stop (EV_A_ idle);
		2868	}
		2869	#endif
2195		2870
2196	void	2871	void
2197	ev_embed_start (EV_P_ ev_embed *w)	2872	ev_embed_start (EV_P_ ev_embed *w)
2198	{	2873	{
2199	if (expect_false (ev_is_active (w)))	2874	if (expect_false (ev_is_active (w)))
2200	return;	2875	return;
2201		2876
2202	{	2877	{
2203	struct ev_loop *loop = w->loop;	2878	struct ev_loop *loop = w->other;
2204	assert (("loop to be embedded is not embeddable", backend & ev_embeddable_backends ()));	2879	assert (("loop to be embedded is not embeddable", backend & ev_embeddable_backends ()));
2205	ev_io_init (&w->io, embed_cb, backend_fd, EV_READ);	2880	ev_io_init (&w->io, embed_io_cb, backend_fd, EV_READ);
2206	}	2881	}
		2882
		2883	EV_FREQUENT_CHECK;
2207		2884
2208	ev_set_priority (&w->io, ev_priority (w));	2885	ev_set_priority (&w->io, ev_priority (w));
2209	ev_io_start (EV_A_ &w->io);	2886	ev_io_start (EV_A_ &w->io);
2210		2887
		2888	ev_prepare_init (&w->prepare, embed_prepare_cb);
		2889	ev_set_priority (&w->prepare, EV_MINPRI);
		2890	ev_prepare_start (EV_A_ &w->prepare);
		2891
		2892	ev_fork_init (&w->fork, embed_fork_cb);
		2893	ev_fork_start (EV_A_ &w->fork);
		2894
		2895	/*ev_idle_init (&w->idle, e,bed_idle_cb);*/
		2896
2211	ev_start (EV_A_ (W)w, 1);	2897	ev_start (EV_A_ (W)w, 1);
		2898
		2899	EV_FREQUENT_CHECK;
2212	}	2900	}
2213		2901
2214	void	2902	void
2215	ev_embed_stop (EV_P_ ev_embed *w)	2903	ev_embed_stop (EV_P_ ev_embed *w)
2216	{	2904	{
2217	clear_pending (EV_A_ (W)w);	2905	clear_pending (EV_A_ (W)w);
2218	if (expect_false (!ev_is_active (w)))	2906	if (expect_false (!ev_is_active (w)))
2219	return;	2907	return;
2220		2908
		2909	EV_FREQUENT_CHECK;
		2910
2221	ev_io_stop (EV_A_ &w->io);	2911	ev_io_stop (EV_A_ &w->io);
		2912	ev_prepare_stop (EV_A_ &w->prepare);
		2913	ev_fork_stop (EV_A_ &w->fork);
2222		2914
2223	ev_stop (EV_A_ (W)w);	2915	EV_FREQUENT_CHECK;
2224	}	2916	}
2225	#endif	2917	#endif
2226		2918
2227	#if EV_FORK_ENABLE	2919	#if EV_FORK_ENABLE
2228	void	2920	void
2229	ev_fork_start (EV_P_ ev_fork *w)	2921	ev_fork_start (EV_P_ ev_fork *w)
2230	{	2922	{
2231	if (expect_false (ev_is_active (w)))	2923	if (expect_false (ev_is_active (w)))
2232	return;	2924	return;
		2925
		2926	EV_FREQUENT_CHECK;
2233		2927
2234	ev_start (EV_A_ (W)w, ++forkcnt);	2928	ev_start (EV_A_ (W)w, ++forkcnt);
2235	array_needsize (ev_fork *, forks, forkmax, forkcnt, EMPTY2);	2929	array_needsize (ev_fork *, forks, forkmax, forkcnt, EMPTY2);
2236	forks [forkcnt - 1] = w;	2930	forks [forkcnt - 1] = w;
		2931
		2932	EV_FREQUENT_CHECK;
2237	}	2933	}
2238		2934
2239	void	2935	void
2240	ev_fork_stop (EV_P_ ev_fork *w)	2936	ev_fork_stop (EV_P_ ev_fork *w)
2241	{	2937	{
2242	clear_pending (EV_A_ (W)w);	2938	clear_pending (EV_A_ (W)w);
2243	if (expect_false (!ev_is_active (w)))	2939	if (expect_false (!ev_is_active (w)))
2244	return;	2940	return;
2245		2941
		2942	EV_FREQUENT_CHECK;
		2943
2246	{	2944	{
2247	int active = ((W)w)->active;	2945	int active = ev_active (w);
		2946
2248	forks [active - 1] = forks [--forkcnt];	2947	forks [active - 1] = forks [--forkcnt];
2249	((W)forks [active - 1])->active = active;	2948	ev_active (forks [active - 1]) = active;
2250	}	2949	}
2251		2950
2252	ev_stop (EV_A_ (W)w);	2951	ev_stop (EV_A_ (W)w);
		2952
		2953	EV_FREQUENT_CHECK;
		2954	}
		2955	#endif
		2956
		2957	#if EV_ASYNC_ENABLE
		2958	void
		2959	ev_async_start (EV_P_ ev_async *w)
		2960	{
		2961	if (expect_false (ev_is_active (w)))
		2962	return;
		2963
		2964	evpipe_init (EV_A);
		2965
		2966	EV_FREQUENT_CHECK;
		2967
		2968	ev_start (EV_A_ (W)w, ++asynccnt);
		2969	array_needsize (ev_async *, asyncs, asyncmax, asynccnt, EMPTY2);
		2970	asyncs [asynccnt - 1] = w;
		2971
		2972	EV_FREQUENT_CHECK;
		2973	}
		2974
		2975	void
		2976	ev_async_stop (EV_P_ ev_async *w)
		2977	{
		2978	clear_pending (EV_A_ (W)w);
		2979	if (expect_false (!ev_is_active (w)))
		2980	return;
		2981
		2982	EV_FREQUENT_CHECK;
		2983
		2984	{
		2985	int active = ev_active (w);
		2986
		2987	asyncs [active - 1] = asyncs [--asynccnt];
		2988	ev_active (asyncs [active - 1]) = active;
		2989	}
		2990
		2991	ev_stop (EV_A_ (W)w);
		2992
		2993	EV_FREQUENT_CHECK;
		2994	}
		2995
		2996	void
		2997	ev_async_send (EV_P_ ev_async *w)
		2998	{
		2999	w->sent = 1;
		3000	evpipe_write (EV_A_ &gotasync);
2253	}	3001	}
2254	#endif	3002	#endif
2255		3003
2256	/*****************************************************************************/	3004	/*****************************************************************************/
2257		3005
…		…
2267	once_cb (EV_P_ struct ev_once *once, int revents)	3015	once_cb (EV_P_ struct ev_once *once, int revents)
2268	{	3016	{
2269	void (*cb)(int revents, void *arg) = once->cb;	3017	void (*cb)(int revents, void *arg) = once->cb;
2270	void *arg = once->arg;	3018	void *arg = once->arg;
2271		3019
2272	ev_io_stop (EV_A_ &once->io);	3020	ev_io_stop (EV_A_ &once->io);
2273	ev_timer_stop (EV_A_ &once->to);	3021	ev_timer_stop (EV_A_ &once->to);
2274	ev_free (once);	3022	ev_free (once);
2275		3023
2276	cb (revents, arg);	3024	cb (revents, arg);
2277	}	3025	}
2278		3026
2279	static void	3027	static void
2280	once_cb_io (EV_P_ ev_io *w, int revents)	3028	once_cb_io (EV_P_ ev_io *w, int revents)
2281	{	3029	{
2282	once_cb (EV_A_ (struct ev_once *)(((char *)w) - offsetof (struct ev_once, io)), revents);	3030	struct ev_once *once = (struct ev_once *)(((char *)w) - offsetof (struct ev_once, io));
		3031
		3032	once_cb (EV_A_ once, revents | ev_clear_pending (EV_A_ &once->to));
2283	}	3033	}
2284		3034
2285	static void	3035	static void
2286	once_cb_to (EV_P_ ev_timer *w, int revents)	3036	once_cb_to (EV_P_ ev_timer *w, int revents)
2287	{	3037	{
2288	once_cb (EV_A_ (struct ev_once *)(((char *)w) - offsetof (struct ev_once, to)), revents);	3038	struct ev_once *once = (struct ev_once *)(((char *)w) - offsetof (struct ev_once, to));
		3039
		3040	once_cb (EV_A_ once, revents | ev_clear_pending (EV_A_ &once->io));
2289	}	3041	}
2290		3042
2291	void	3043	void
2292	ev_once (EV_P_ int fd, int events, ev_tstamp timeout, void (*cb)(int revents, void *arg), void *arg)	3044	ev_once (EV_P_ int fd, int events, ev_tstamp timeout, void (*cb)(int revents, void *arg), void *arg)
2293	{	3045	{
…		…
2315	ev_timer_set (&once->to, timeout, 0.);	3067	ev_timer_set (&once->to, timeout, 0.);
2316	ev_timer_start (EV_A_ &once->to);	3068	ev_timer_start (EV_A_ &once->to);
2317	}	3069	}
2318	}	3070	}
2319		3071
		3072	#if EV_MULTIPLICITY
		3073	#include "ev_wrap.h"
		3074	#endif
		3075
2320	#ifdef __cplusplus	3076	#ifdef __cplusplus
2321	}	3077	}
2322	#endif	3078	#endif
2323		3079

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