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Comparing libev/ev.c (file contents):
Revision 1.140 by root, Mon Nov 26 19:49:36 2007 UTC vs.
Revision 1.227 by root, Fri May 2 07:20:01 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
…		…
94	# else	111	# else
95	# define EV_USE_PORT 0	112	# define EV_USE_PORT 0
96	# endif	113	# endif
97	# endif	114	# endif
98		115
		116	# ifndef EV_USE_INOTIFY
		117	# if HAVE_INOTIFY_INIT && HAVE_SYS_INOTIFY_H
		118	# define EV_USE_INOTIFY 1
		119	# else
		120	# define EV_USE_INOTIFY 0
		121	# endif
		122	# endif
		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
99	#endif	132	#endif
100		133
101	#include <math.h>	134	#include <math.h>
102	#include <stdlib.h>	135	#include <stdlib.h>
103	#include <fcntl.h>	136	#include <fcntl.h>
…		…
109	#include <errno.h>	142	#include <errno.h>
110	#include <sys/types.h>	143	#include <sys/types.h>
111	#include <time.h>	144	#include <time.h>
112		145
113	#include <signal.h>	146	#include <signal.h>
		147
		148	#ifdef EV_H
		149	# include EV_H
		150	#else
		151	# include "ev.h"
		152	#endif
114		153
115	#ifndef _WIN32	154	#ifndef _WIN32
116	# include <sys/time.h>	155	# include <sys/time.h>
117	# include <sys/wait.h>	156	# include <sys/wait.h>
118	# include <unistd.h>	157	# include <unistd.h>
…		…
122	# ifndef EV_SELECT_IS_WINSOCKET	161	# ifndef EV_SELECT_IS_WINSOCKET
123	# define EV_SELECT_IS_WINSOCKET 1	162	# define EV_SELECT_IS_WINSOCKET 1
124	# endif	163	# endif
125	#endif	164	#endif
126		165
127	/**/	166	/* this block tries to deduce configuration from header-defined symbols and defaults */
128		167
129	#ifndef EV_USE_MONOTONIC	168	#ifndef EV_USE_MONOTONIC
130	# define EV_USE_MONOTONIC 0	169	# define EV_USE_MONOTONIC 0
131	#endif	170	#endif
132		171
133	#ifndef EV_USE_REALTIME	172	#ifndef EV_USE_REALTIME
134	# define EV_USE_REALTIME 0	173	# define EV_USE_REALTIME 0
		174	#endif
		175
		176	#ifndef EV_USE_NANOSLEEP
		177	# define EV_USE_NANOSLEEP 0
135	#endif	178	#endif
136		179
137	#ifndef EV_USE_SELECT	180	#ifndef EV_USE_SELECT
138	# define EV_USE_SELECT 1	181	# define EV_USE_SELECT 1
139	#endif	182	#endif
…		…
145	# define EV_USE_POLL 1	188	# define EV_USE_POLL 1
146	# endif	189	# endif
147	#endif	190	#endif
148		191
149	#ifndef EV_USE_EPOLL	192	#ifndef EV_USE_EPOLL
		193	# if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 4))
		194	# define EV_USE_EPOLL 1
		195	# else
150	# define EV_USE_EPOLL 0	196	# define EV_USE_EPOLL 0
		197	# endif
151	#endif	198	#endif
152		199
153	#ifndef EV_USE_KQUEUE	200	#ifndef EV_USE_KQUEUE
154	# define EV_USE_KQUEUE 0	201	# define EV_USE_KQUEUE 0
155	#endif	202	#endif
156		203
157	#ifndef EV_USE_PORT	204	#ifndef EV_USE_PORT
158	# define EV_USE_PORT 0	205	# define EV_USE_PORT 0
159	#endif	206	#endif
160		207
161	/**/	208	#ifndef EV_USE_INOTIFY
		209	# if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 4))
		210	# define EV_USE_INOTIFY 1
		211	# else
		212	# define EV_USE_INOTIFY 0
		213	# endif
		214	#endif
		215
		216	#ifndef EV_PID_HASHSIZE
		217	# if EV_MINIMAL
		218	# define EV_PID_HASHSIZE 1
		219	# else
		220	# define EV_PID_HASHSIZE 16
		221	# endif
		222	#endif
		223
		224	#ifndef EV_INOTIFY_HASHSIZE
		225	# if EV_MINIMAL
		226	# define EV_INOTIFY_HASHSIZE 1
		227	# else
		228	# define EV_INOTIFY_HASHSIZE 16
		229	# endif
		230	#endif
		231
		232	#ifndef EV_USE_EVENTFD
		233	# if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 7))
		234	# define EV_USE_EVENTFD 1
		235	# else
		236	# define EV_USE_EVENTFD 0
		237	# endif
		238	#endif
		239
		240	/* this block fixes any misconfiguration where we know we run into trouble otherwise */
162		241
163	#ifndef CLOCK_MONOTONIC	242	#ifndef CLOCK_MONOTONIC
164	# undef EV_USE_MONOTONIC	243	# undef EV_USE_MONOTONIC
165	# define EV_USE_MONOTONIC 0	244	# define EV_USE_MONOTONIC 0
166	#endif	245	#endif
…		…
168	#ifndef CLOCK_REALTIME	247	#ifndef CLOCK_REALTIME
169	# undef EV_USE_REALTIME	248	# undef EV_USE_REALTIME
170	# define EV_USE_REALTIME 0	249	# define EV_USE_REALTIME 0
171	#endif	250	#endif
172		251
		252	#if !EV_STAT_ENABLE
		253	# undef EV_USE_INOTIFY
		254	# define EV_USE_INOTIFY 0
		255	#endif
		256
		257	#if !EV_USE_NANOSLEEP
		258	# ifndef _WIN32
		259	# include <sys/select.h>
		260	# endif
		261	#endif
		262
		263	#if EV_USE_INOTIFY
		264	# include <sys/inotify.h>
		265	#endif
		266
173	#if EV_SELECT_IS_WINSOCKET	267	#if EV_SELECT_IS_WINSOCKET
174	# include <winsock.h>	268	# include <winsock.h>
175	#endif	269	#endif
176		270
		271	#if EV_USE_EVENTFD
		272	/* our minimum requirement is glibc 2.7 which has the stub, but not the header */
		273	# include <stdint.h>
		274	# ifdef __cplusplus
		275	extern "C" {
		276	# endif
		277	int eventfd (unsigned int initval, int flags);
		278	# ifdef __cplusplus
		279	}
		280	# endif
		281	#endif
		282
177	/**/	283	/**/
		284
		285	/*
		286	* This is used to avoid floating point rounding problems.
		287	* It is added to ev_rt_now when scheduling periodics
		288	* to ensure progress, time-wise, even when rounding
		289	* errors are against us.
		290	* This value is good at least till the year 4000.
		291	* Better solutions welcome.
		292	*/
		293	#define TIME_EPSILON 0.0001220703125 /* 1/8192 */
178		294
179	#define MIN_TIMEJUMP 1. /* minimum timejump that gets detected (if monotonic clock available) */	295	#define MIN_TIMEJUMP 1. /* minimum timejump that gets detected (if monotonic clock available) */
180	#define MAX_BLOCKTIME 59.743 /* never wait longer than this time (to detect time jumps) */	296	#define MAX_BLOCKTIME 59.743 /* never wait longer than this time (to detect time jumps) */
181	#define PID_HASHSIZE 16 /* size of pid hash table, must be power of two */
182	/*#define CLEANUP_INTERVAL (MAX_BLOCKTIME * 5.) /* how often to try to free memory and re-check fds */	297	/*#define CLEANUP_INTERVAL (MAX_BLOCKTIME * 5.) /* how often to try to free memory and re-check fds, TODO */
183		298
184	#ifdef EV_H
185	# include EV_H
186	#else
187	# include "ev.h"
188	#endif
189
190	#if __GNUC__ >= 3	299	#if __GNUC__ >= 4
191	# define expect(expr,value) __builtin_expect ((expr),(value))	300	# define expect(expr,value) __builtin_expect ((expr),(value))
192	# define inline_size static inline /* inline for codesize */
193	# if EV_MINIMAL
194	# define noinline __attribute__ ((noinline))	301	# define noinline __attribute__ ((noinline))
195	# define inline_speed static noinline
196	# else
197	# define noinline
198	# define inline_speed static inline
199	# endif
200	#else	302	#else
201	# define expect(expr,value) (expr)	303	# define expect(expr,value) (expr)
202	# define inline_speed static
203	# define inline_minimal static
204	# define noinline	304	# define noinline
		305	# if __STDC_VERSION__ < 199901L && __GNUC__ < 2
		306	# define inline
		307	# endif
205	#endif	308	#endif
206		309
207	#define expect_false(expr) expect ((expr) != 0, 0)	310	#define expect_false(expr) expect ((expr) != 0, 0)
208	#define expect_true(expr) expect ((expr) != 0, 1)	311	#define expect_true(expr) expect ((expr) != 0, 1)
		312	#define inline_size static inline
		313
		314	#if EV_MINIMAL
		315	# define inline_speed static noinline
		316	#else
		317	# define inline_speed static inline
		318	#endif
209		319
210	#define NUMPRI (EV_MAXPRI - EV_MINPRI + 1)	320	#define NUMPRI (EV_MAXPRI - EV_MINPRI + 1)
211	#define ABSPRI(w) ((w)->priority - EV_MINPRI)	321	#define ABSPRI(w) (((W)w)->priority - EV_MINPRI)
212		322
213	#define EMPTY0 /* required for microsofts broken pseudo-c compiler */	323	#define EMPTY /* required for microsofts broken pseudo-c compiler */
214	#define EMPTY2(a,b) /* used to suppress some warnings */	324	#define EMPTY2(a,b) /* used to suppress some warnings */
215		325
216	typedef ev_watcher *W;	326	typedef ev_watcher *W;
217	typedef ev_watcher_list *WL;	327	typedef ev_watcher_list *WL;
218	typedef ev_watcher_time *WT;	328	typedef ev_watcher_time *WT;
219		329
		330	#if EV_USE_MONOTONIC
		331	/* sig_atomic_t is used to avoid per-thread variables or locking but still */
		332	/* giving it a reasonably high chance of working on typical architetcures */
220	static int have_monotonic; /* did clock_gettime (CLOCK_MONOTONIC) work? */	333	static EV_ATOMIC_T have_monotonic; /* did clock_gettime (CLOCK_MONOTONIC) work? */
		334	#endif
221		335
222	#ifdef _WIN32	336	#ifdef _WIN32
223	# include "ev_win32.c"	337	# include "ev_win32.c"
224	#endif	338	#endif
225		339
226	/*****************************************************************************/	340	/*****************************************************************************/
227		341
228	static void (*syserr_cb)(const char *msg);	342	static void (*syserr_cb)(const char *msg);
229		343
		344	void
230	void ev_set_syserr_cb (void (*cb)(const char *msg))	345	ev_set_syserr_cb (void (*cb)(const char *msg))
231	{	346	{
232	syserr_cb = cb;	347	syserr_cb = cb;
233	}	348	}
234		349
235	static void	350	static void noinline
236	syserr (const char *msg)	351	syserr (const char *msg)
237	{	352	{
238	if (!msg)	353	if (!msg)
239	msg = "(libev) system error";	354	msg = "(libev) system error";
240		355
…		…
245	perror (msg);	360	perror (msg);
246	abort ();	361	abort ();
247	}	362	}
248	}	363	}
249		364
		365	static void *
		366	ev_realloc_emul (void *ptr, long size)
		367	{
		368	/* some systems, notably openbsd and darwin, fail to properly
		369	* implement realloc (x, 0) (as required by both ansi c-98 and
		370	* the single unix specification, so work around them here.
		371	*/
		372
		373	if (size)
		374	return realloc (ptr, size);
		375
		376	free (ptr);
		377	return 0;
		378	}
		379
250	static void *(*alloc)(void *ptr, long size);	380	static void *(*alloc)(void *ptr, long size) = ev_realloc_emul;
251		381
		382	void
252	void ev_set_allocator (void *(*cb)(void *ptr, long size))	383	ev_set_allocator (void *(*cb)(void *ptr, long size))
253	{	384	{
254	alloc = cb;	385	alloc = cb;
255	}	386	}
256		387
257	static void *	388	inline_speed void *
258	ev_realloc (void *ptr, long size)	389	ev_realloc (void *ptr, long size)
259	{	390	{
260	ptr = alloc ? alloc (ptr, size) : realloc (ptr, size);	391	ptr = alloc (ptr, size);
261		392
262	if (!ptr && size)	393	if (!ptr && size)
263	{	394	{
264	fprintf (stderr, "libev: cannot allocate %ld bytes, aborting.", size);	395	fprintf (stderr, "libev: cannot allocate %ld bytes, aborting.", size);
265	abort ();	396	abort ();
…		…
286	typedef struct	417	typedef struct
287	{	418	{
288	W w;	419	W w;
289	int events;	420	int events;
290	} ANPENDING;	421	} ANPENDING;
		422
		423	#if EV_USE_INOTIFY
		424	typedef struct
		425	{
		426	WL head;
		427	} ANFS;
		428	#endif
291		429
292	#if EV_MULTIPLICITY	430	#if EV_MULTIPLICITY
293		431
294	struct ev_loop	432	struct ev_loop
295	{	433	{
…		…
315		453
316	#endif	454	#endif
317		455
318	/*****************************************************************************/	456	/*****************************************************************************/
319		457
320	ev_tstamp noinline	458	ev_tstamp
321	ev_time (void)	459	ev_time (void)
322	{	460	{
323	#if EV_USE_REALTIME	461	#if EV_USE_REALTIME
324	struct timespec ts;	462	struct timespec ts;
325	clock_gettime (CLOCK_REALTIME, &ts);	463	clock_gettime (CLOCK_REALTIME, &ts);
…		…
352	{	490	{
353	return ev_rt_now;	491	return ev_rt_now;
354	}	492	}
355	#endif	493	#endif
356		494
357	#define array_roundsize(type,n) (((n) | 4) & ~3)	495	void
		496	ev_sleep (ev_tstamp delay)
		497	{
		498	if (delay > 0.)
		499	{
		500	#if EV_USE_NANOSLEEP
		501	struct timespec ts;
		502
		503	ts.tv_sec = (time_t)delay;
		504	ts.tv_nsec = (long)((delay - (ev_tstamp)(ts.tv_sec)) * 1e9);
		505
		506	nanosleep (&ts, 0);
		507	#elif defined(_WIN32)
		508	Sleep ((unsigned long)(delay * 1e3));
		509	#else
		510	struct timeval tv;
		511
		512	tv.tv_sec = (time_t)delay;
		513	tv.tv_usec = (long)((delay - (ev_tstamp)(tv.tv_sec)) * 1e6);
		514
		515	select (0, 0, 0, 0, &tv);
		516	#endif
		517	}
		518	}
		519
		520	/*****************************************************************************/
		521
		522	int inline_size
		523	array_nextsize (int elem, int cur, int cnt)
		524	{
		525	int ncur = cur + 1;
		526
		527	do
		528	ncur <<= 1;
		529	while (cnt > ncur);
		530
		531	/* if size > 4096, round to 4096 - 4 * longs to accomodate malloc overhead */
		532	if (elem * ncur > 4096)
		533	{
		534	ncur *= elem;
		535	ncur = (ncur + elem + 4095 + sizeof (void *) * 4) & ~4095;
		536	ncur = ncur - sizeof (void *) * 4;
		537	ncur /= elem;
		538	}
		539
		540	return ncur;
		541	}
		542
		543	static noinline void *
		544	array_realloc (int elem, void *base, int *cur, int cnt)
		545	{
		546	*cur = array_nextsize (elem, *cur, cnt);
		547	return ev_realloc (base, elem * *cur);
		548	}
358		549
359	#define array_needsize(type,base,cur,cnt,init) \	550	#define array_needsize(type,base,cur,cnt,init) \
360	if (expect_false ((cnt) > cur)) \	551	if (expect_false ((cnt) > (cur))) \
361	{ \	552	{ \
362	int newcnt = cur; \	553	int ocur_ = (cur); \
363	do \	554	(base) = (type *)array_realloc \
364	{ \	555	(sizeof (type), (base), &(cur), (cnt)); \
365	newcnt = array_roundsize (type, newcnt << 1); \	556	init ((base) + (ocur_), (cur) - ocur_); \
366	} \
367	while ((cnt) > newcnt); \
368	\
369	base = (type *)ev_realloc (base, sizeof (type) * (newcnt));\
370	init (base + cur, newcnt - cur); \
371	cur = newcnt; \
372	}	557	}
373		558
		559	#if 0
374	#define array_slim(type,stem) \	560	#define array_slim(type,stem) \
375	if (stem ## max < array_roundsize (stem ## cnt >> 2)) \	561	if (stem ## max < array_roundsize (stem ## cnt >> 2)) \
376	{ \	562	{ \
377	stem ## max = array_roundsize (stem ## cnt >> 1); \	563	stem ## max = array_roundsize (stem ## cnt >> 1); \
378	base = (type *)ev_realloc (base, sizeof (type) * (stem ## max));\	564	base = (type *)ev_realloc (base, sizeof (type) * (stem ## max));\
379	fprintf (stderr, "slimmed down " # stem " to %d\n", stem ## max);/*D*/\	565	fprintf (stderr, "slimmed down " # stem " to %d\n", stem ## max);/*D*/\
380	}	566	}
		567	#endif
381		568
382	#define array_free(stem, idx) \	569	#define array_free(stem, idx) \
383	ev_free (stem ## s idx); stem ## cnt idx = stem ## max idx = 0;	570	ev_free (stem ## s idx); stem ## cnt idx = stem ## max idx = 0;
		571
		572	/*****************************************************************************/
		573
		574	void noinline
		575	ev_feed_event (EV_P_ void *w, int revents)
		576	{
		577	W w_ = (W)w;
		578	int pri = ABSPRI (w_);
		579
		580	if (expect_false (w_->pending))
		581	pendings [pri][w_->pending - 1].events |= revents;
		582	else
		583	{
		584	w_->pending = ++pendingcnt [pri];
		585	array_needsize (ANPENDING, pendings [pri], pendingmax [pri], w_->pending, EMPTY2);
		586	pendings [pri][w_->pending - 1].w = w_;
		587	pendings [pri][w_->pending - 1].events = revents;
		588	}
		589	}
		590
		591	void inline_speed
		592	queue_events (EV_P_ W *events, int eventcnt, int type)
		593	{
		594	int i;
		595
		596	for (i = 0; i < eventcnt; ++i)
		597	ev_feed_event (EV_A_ events [i], type);
		598	}
384		599
385	/*****************************************************************************/	600	/*****************************************************************************/
386		601
387	void inline_size	602	void inline_size
388	anfds_init (ANFD *base, int count)	603	anfds_init (ANFD *base, int count)
…		…
395		610
396	++base;	611	++base;
397	}	612	}
398	}	613	}
399		614
400	void noinline
401	ev_feed_event (EV_P_ void *w, int revents)
402	{
403	W w_ = (W)w;
404
405	if (expect_false (w_->pending))
406	{
407	pendings [ABSPRI (w_)][w_->pending - 1].events |= revents;
408	return;
409	}
410
411	w_->pending = ++pendingcnt [ABSPRI (w_)];
412	array_needsize (ANPENDING, pendings [ABSPRI (w_)], pendingmax [ABSPRI (w_)], pendingcnt [ABSPRI (w_)], EMPTY2);
413	pendings [ABSPRI (w_)][w_->pending - 1].w = w_;
414	pendings [ABSPRI (w_)][w_->pending - 1].events = revents;
415	}
416
417	static void
418	queue_events (EV_P_ W *events, int eventcnt, int type)
419	{
420	int i;
421
422	for (i = 0; i < eventcnt; ++i)
423	ev_feed_event (EV_A_ events [i], type);
424	}
425
426	void inline_speed	615	void inline_speed
427	fd_event (EV_P_ int fd, int revents)	616	fd_event (EV_P_ int fd, int revents)
428	{	617	{
429	ANFD *anfd = anfds + fd;	618	ANFD *anfd = anfds + fd;
430	ev_io *w;	619	ev_io *w;
…		…
439	}	628	}
440		629
441	void	630	void
442	ev_feed_fd_event (EV_P_ int fd, int revents)	631	ev_feed_fd_event (EV_P_ int fd, int revents)
443	{	632	{
		633	if (fd >= 0 && fd < anfdmax)
444	fd_event (EV_A_ fd, revents);	634	fd_event (EV_A_ fd, revents);
445	}	635	}
446
447	/*****************************************************************************/
448		636
449	void inline_size	637	void inline_size
450	fd_reify (EV_P)	638	fd_reify (EV_P)
451	{	639	{
452	int i;	640	int i;
…		…
455	{	643	{
456	int fd = fdchanges [i];	644	int fd = fdchanges [i];
457	ANFD *anfd = anfds + fd;	645	ANFD *anfd = anfds + fd;
458	ev_io *w;	646	ev_io *w;
459		647
460	int events = 0;	648	unsigned char events = 0;
461		649
462	for (w = (ev_io *)anfd->head; w; w = (ev_io *)((WL)w)->next)	650	for (w = (ev_io *)anfd->head; w; w = (ev_io *)((WL)w)->next)
463	events |= w->events;	651	events |= (unsigned char)w->events;
464		652
465	#if EV_SELECT_IS_WINSOCKET	653	#if EV_SELECT_IS_WINSOCKET
466	if (events)	654	if (events)
467	{	655	{
468	unsigned long argp;	656	unsigned long argp;
		657	#ifdef EV_FD_TO_WIN32_HANDLE
		658	anfd->handle = EV_FD_TO_WIN32_HANDLE (fd);
		659	#else
469	anfd->handle = _get_osfhandle (fd);	660	anfd->handle = _get_osfhandle (fd);
		661	#endif
470	assert (("libev only supports socket fds in this configuration", ioctlsocket (anfd->handle, FIONREAD, &argp) == 0));	662	assert (("libev only supports socket fds in this configuration", ioctlsocket (anfd->handle, FIONREAD, &argp) == 0));
471	}	663	}
472	#endif	664	#endif
473		665
		666	{
		667	unsigned char o_events = anfd->events;
		668	unsigned char o_reify = anfd->reify;
		669
474	anfd->reify = 0;	670	anfd->reify = 0;
475
476	backend_modify (EV_A_ fd, anfd->events, events);
477	anfd->events = events;	671	anfd->events = events;
		672
		673	if (o_events != events || o_reify & EV_IOFDSET)
		674	backend_modify (EV_A_ fd, o_events, events);
		675	}
478	}	676	}
479		677
480	fdchangecnt = 0;	678	fdchangecnt = 0;
481	}	679	}
482		680
483	void inline_size	681	void inline_size
484	fd_change (EV_P_ int fd)	682	fd_change (EV_P_ int fd, int flags)
485	{	683	{
486	if (expect_false (anfds [fd].reify))	684	unsigned char reify = anfds [fd].reify;
487	return;
488
489	anfds [fd].reify = 1;	685	anfds [fd].reify |= flags;
490		686
		687	if (expect_true (!reify))
		688	{
491	++fdchangecnt;	689	++fdchangecnt;
492	array_needsize (int, fdchanges, fdchangemax, fdchangecnt, EMPTY2);	690	array_needsize (int, fdchanges, fdchangemax, fdchangecnt, EMPTY2);
493	fdchanges [fdchangecnt - 1] = fd;	691	fdchanges [fdchangecnt - 1] = fd;
		692	}
494	}	693	}
495		694
496	void inline_speed	695	void inline_speed
497	fd_kill (EV_P_ int fd)	696	fd_kill (EV_P_ int fd)
498	{	697	{
…		…
545	static void noinline	744	static void noinline
546	fd_rearm_all (EV_P)	745	fd_rearm_all (EV_P)
547	{	746	{
548	int fd;	747	int fd;
549		748
550	/* this should be highly optimised to not do anything but set a flag */
551	for (fd = 0; fd < anfdmax; ++fd)	749	for (fd = 0; fd < anfdmax; ++fd)
552	if (anfds [fd].events)	750	if (anfds [fd].events)
553	{	751	{
554	anfds [fd].events = 0;	752	anfds [fd].events = 0;
555	fd_change (EV_A_ fd);	753	fd_change (EV_A_ fd, EV_IOFDSET | 1);
556	}	754	}
557	}	755	}
558		756
559	/*****************************************************************************/	757	/*****************************************************************************/
560		758
		759	/* towards the root */
561	void inline_speed	760	void inline_speed
562	upheap (WT *heap, int k)	761	upheap (WT *heap, int k)
563	{	762	{
564	WT w = heap [k];	763	WT w = heap [k];
565		764
566	while (k && heap [k >> 1]->at > w->at)	765	while (k)
567	{	766	{
		767	int p = (k - 1) >> 1;
		768
		769	if (heap [p]->at <= w->at)
		770	break;
		771
568	heap [k] = heap [k >> 1];	772	heap [k] = heap [p];
569	((W)heap [k])->active = k + 1;	773	((W)heap [k])->active = k + 1;
570	k >>= 1;	774	k = p;
571	}	775	}
572		776
573	heap [k] = w;	777	heap [k] = w;
574	((W)heap [k])->active = k + 1;	778	((W)heap [k])->active = k + 1;
575
576	}	779	}
577		780
		781	/* away from the root */
578	void inline_speed	782	void inline_speed
579	downheap (WT *heap, int N, int k)	783	downheap (WT *heap, int N, int k)
580	{	784	{
581	WT w = heap [k];	785	WT w = heap [k];
582		786
583	while (k < (N >> 1))	787	for (;;)
584	{	788	{
585	int j = k << 1;	789	int c = (k << 1) + 1;
586		790
587	if (j + 1 < N && heap [j]->at > heap [j + 1]->at)	791	if (c >= N)
588	++j;
589
590	if (w->at <= heap [j]->at)
591	break;	792	break;
592		793
		794	c += c + 1 < N && heap [c]->at > heap [c + 1]->at
		795	? 1 : 0;
		796
		797	if (w->at <= heap [c]->at)
		798	break;
		799
593	heap [k] = heap [j];	800	heap [k] = heap [c];
594	((W)heap [k])->active = k + 1;	801	((W)heap [k])->active = k + 1;
		802
595	k = j;	803	k = c;
596	}	804	}
597		805
598	heap [k] = w;	806	heap [k] = w;
599	((W)heap [k])->active = k + 1;	807	((W)heap [k])->active = k + 1;
600	}	808	}
…		…
609	/*****************************************************************************/	817	/*****************************************************************************/
610		818
611	typedef struct	819	typedef struct
612	{	820	{
613	WL head;	821	WL head;
614	sig_atomic_t volatile gotsig;	822	EV_ATOMIC_T gotsig;
615	} ANSIG;	823	} ANSIG;
616		824
617	static ANSIG *signals;	825	static ANSIG *signals;
618	static int signalmax;	826	static int signalmax;
619		827
620	static int sigpipe [2];	828	static EV_ATOMIC_T gotsig;
621	static sig_atomic_t volatile gotsig;
622	static ev_io sigev;
623		829
624	void inline_size	830	void inline_size
625	signals_init (ANSIG *base, int count)	831	signals_init (ANSIG *base, int count)
626	{	832	{
627	while (count--)	833	while (count--)
…		…
631		837
632	++base;	838	++base;
633	}	839	}
634	}	840	}
635		841
636	static void	842	/*****************************************************************************/
637	sighandler (int signum)
638	{
639	#if _WIN32
640	signal (signum, sighandler);
641	#endif
642		843
643	signals [signum - 1].gotsig = 1;
644
645	if (!gotsig)
646	{
647	int old_errno = errno;
648	gotsig = 1;
649	write (sigpipe [1], &signum, 1);
650	errno = old_errno;
651	}
652	}
653
654	void noinline
655	ev_feed_signal_event (EV_P_ int signum)
656	{
657	WL w;
658
659	#if EV_MULTIPLICITY
660	assert (("feeding signal events is only supported in the default loop", loop == ev_default_loop_ptr));
661	#endif
662
663	--signum;
664
665	if (signum < 0 || signum >= signalmax)
666	return;
667
668	signals [signum].gotsig = 0;
669
670	for (w = signals [signum].head; w; w = w->next)
671	ev_feed_event (EV_A_ (W)w, EV_SIGNAL);
672	}
673
674	static void
675	sigcb (EV_P_ ev_io *iow, int revents)
676	{
677	int signum;
678
679	read (sigpipe [0], &revents, 1);
680	gotsig = 0;
681
682	for (signum = signalmax; signum--; )
683	if (signals [signum].gotsig)
684	ev_feed_signal_event (EV_A_ signum + 1);
685	}
686
687	void inline_size	844	void inline_speed
688	fd_intern (int fd)	845	fd_intern (int fd)
689	{	846	{
690	#ifdef _WIN32	847	#ifdef _WIN32
691	int arg = 1;	848	int arg = 1;
692	ioctlsocket (_get_osfhandle (fd), FIONBIO, &arg);	849	ioctlsocket (_get_osfhandle (fd), FIONBIO, &arg);
…		…
695	fcntl (fd, F_SETFL, O_NONBLOCK);	852	fcntl (fd, F_SETFL, O_NONBLOCK);
696	#endif	853	#endif
697	}	854	}
698		855
699	static void noinline	856	static void noinline
700	siginit (EV_P)	857	evpipe_init (EV_P)
701	{	858	{
		859	if (!ev_is_active (&pipeev))
		860	{
		861	#if EV_USE_EVENTFD
		862	if ((evfd = eventfd (0, 0)) >= 0)
		863	{
		864	evpipe [0] = -1;
		865	fd_intern (evfd);
		866	ev_io_set (&pipeev, evfd, EV_READ);
		867	}
		868	else
		869	#endif
		870	{
		871	while (pipe (evpipe))
		872	syserr ("(libev) error creating signal/async pipe");
		873
702	fd_intern (sigpipe [0]);	874	fd_intern (evpipe [0]);
703	fd_intern (sigpipe [1]);	875	fd_intern (evpipe [1]);
		876	ev_io_set (&pipeev, evpipe [0], EV_READ);
		877	}
704		878
705	ev_io_set (&sigev, sigpipe [0], EV_READ);
706	ev_io_start (EV_A_ &sigev);	879	ev_io_start (EV_A_ &pipeev);
707	ev_unref (EV_A); /* child watcher should not keep loop alive */	880	ev_unref (EV_A); /* watcher should not keep loop alive */
		881	}
		882	}
		883
		884	void inline_size
		885	evpipe_write (EV_P_ EV_ATOMIC_T *flag)
		886	{
		887	if (!*flag)
		888	{
		889	int old_errno = errno; /* save errno because write might clobber it */
		890
		891	*flag = 1;
		892
		893	#if EV_USE_EVENTFD
		894	if (evfd >= 0)
		895	{
		896	uint64_t counter = 1;
		897	write (evfd, &counter, sizeof (uint64_t));
		898	}
		899	else
		900	#endif
		901	write (evpipe [1], &old_errno, 1);
		902
		903	errno = old_errno;
		904	}
		905	}
		906
		907	static void
		908	pipecb (EV_P_ ev_io *iow, int revents)
		909	{
		910	#if EV_USE_EVENTFD
		911	if (evfd >= 0)
		912	{
		913	uint64_t counter = 1;
		914	read (evfd, &counter, sizeof (uint64_t));
		915	}
		916	else
		917	#endif
		918	{
		919	char dummy;
		920	read (evpipe [0], &dummy, 1);
		921	}
		922
		923	if (gotsig && ev_is_default_loop (EV_A))
		924	{
		925	int signum;
		926	gotsig = 0;
		927
		928	for (signum = signalmax; signum--; )
		929	if (signals [signum].gotsig)
		930	ev_feed_signal_event (EV_A_ signum + 1);
		931	}
		932
		933	#if EV_ASYNC_ENABLE
		934	if (gotasync)
		935	{
		936	int i;
		937	gotasync = 0;
		938
		939	for (i = asynccnt; i--; )
		940	if (asyncs [i]->sent)
		941	{
		942	asyncs [i]->sent = 0;
		943	ev_feed_event (EV_A_ asyncs [i], EV_ASYNC);
		944	}
		945	}
		946	#endif
708	}	947	}
709		948
710	/*****************************************************************************/	949	/*****************************************************************************/
711		950
		951	static void
		952	ev_sighandler (int signum)
		953	{
		954	#if EV_MULTIPLICITY
		955	struct ev_loop *loop = &default_loop_struct;
		956	#endif
		957
		958	#if _WIN32
		959	signal (signum, ev_sighandler);
		960	#endif
		961
		962	signals [signum - 1].gotsig = 1;
		963	evpipe_write (EV_A_ &gotsig);
		964	}
		965
		966	void noinline
		967	ev_feed_signal_event (EV_P_ int signum)
		968	{
		969	WL w;
		970
		971	#if EV_MULTIPLICITY
		972	assert (("feeding signal events is only supported in the default loop", loop == ev_default_loop_ptr));
		973	#endif
		974
		975	--signum;
		976
		977	if (signum < 0 || signum >= signalmax)
		978	return;
		979
		980	signals [signum].gotsig = 0;
		981
		982	for (w = signals [signum].head; w; w = w->next)
		983	ev_feed_event (EV_A_ (W)w, EV_SIGNAL);
		984	}
		985
		986	/*****************************************************************************/
		987
712	static ev_child *childs [PID_HASHSIZE];	988	static WL childs [EV_PID_HASHSIZE];
713		989
714	#ifndef _WIN32	990	#ifndef _WIN32
715		991
716	static ev_signal childev;	992	static ev_signal childev;
		993
		994	#ifndef WIFCONTINUED
		995	# define WIFCONTINUED(status) 0
		996	#endif
		997
		998	void inline_speed
		999	child_reap (EV_P_ int chain, int pid, int status)
		1000	{
		1001	ev_child *w;
		1002	int traced = WIFSTOPPED (status) || WIFCONTINUED (status);
		1003
		1004	for (w = (ev_child *)childs [chain & (EV_PID_HASHSIZE - 1)]; w; w = (ev_child *)((WL)w)->next)
		1005	{
		1006	if ((w->pid == pid || !w->pid)
		1007	&& (!traced || (w->flags & 1)))
		1008	{
		1009	ev_set_priority (w, EV_MAXPRI); /* need to do it *now*, this *must* be the same prio as the signal watcher itself */
		1010	w->rpid = pid;
		1011	w->rstatus = status;
		1012	ev_feed_event (EV_A_ (W)w, EV_CHILD);
		1013	}
		1014	}
		1015	}
717		1016
718	#ifndef WCONTINUED	1017	#ifndef WCONTINUED
719	# define WCONTINUED 0	1018	# define WCONTINUED 0
720	#endif	1019	#endif
721		1020
722	void inline_speed
723	child_reap (EV_P_ ev_signal *sw, int chain, int pid, int status)
724	{
725	ev_child *w;
726
727	for (w = (ev_child *)childs [chain & (PID_HASHSIZE - 1)]; w; w = (ev_child *)((WL)w)->next)
728	if (w->pid == pid || !w->pid)
729	{
730	ev_priority (w) = ev_priority (sw); /* need to do it *now* */
731	w->rpid = pid;
732	w->rstatus = status;
733	ev_feed_event (EV_A_ (W)w, EV_CHILD);
734	}
735	}
736
737	static void	1021	static void
738	childcb (EV_P_ ev_signal *sw, int revents)	1022	childcb (EV_P_ ev_signal *sw, int revents)
739	{	1023	{
740	int pid, status;	1024	int pid, status;
741		1025
		1026	/* some systems define WCONTINUED but then fail to support it (linux 2.4) */
742	if (0 < (pid = waitpid (-1, &status, WNOHANG | WUNTRACED | WCONTINUED)))	1027	if (0 >= (pid = waitpid (-1, &status, WNOHANG | WUNTRACED | WCONTINUED)))
743	{	1028	if (!WCONTINUED
		1029	|| errno != EINVAL
		1030	|| 0 >= (pid = waitpid (-1, &status, WNOHANG | WUNTRACED)))
		1031	return;
		1032
744	/* make sure we are called again until all childs have been reaped */	1033	/* make sure we are called again until all children have been reaped */
745	/* we need to do it this way so that the callback gets called before we continue */	1034	/* we need to do it this way so that the callback gets called before we continue */
746	ev_feed_event (EV_A_ (W)sw, EV_SIGNAL);	1035	ev_feed_event (EV_A_ (W)sw, EV_SIGNAL);
747		1036
748	child_reap (EV_A_ sw, pid, pid, status);	1037	child_reap (EV_A_ pid, pid, status);
		1038	if (EV_PID_HASHSIZE > 1)
749	child_reap (EV_A_ sw, 0, pid, status); /* this might trigger a watcher twice, but feed_event catches that */	1039	child_reap (EV_A_ 0, pid, status); /* this might trigger a watcher twice, but feed_event catches that */
750	}
751	}	1040	}
752		1041
753	#endif	1042	#endif
754		1043
755	/*****************************************************************************/	1044	/*****************************************************************************/
…		…
827	}	1116	}
828		1117
829	unsigned int	1118	unsigned int
830	ev_embeddable_backends (void)	1119	ev_embeddable_backends (void)
831	{	1120	{
832	return EVBACKEND_EPOLL	1121	int flags = EVBACKEND_EPOLL | EVBACKEND_KQUEUE | EVBACKEND_PORT;
833	| EVBACKEND_KQUEUE	1122
834	| EVBACKEND_PORT;	1123	/* epoll embeddability broken on all linux versions up to at least 2.6.23 */
		1124	/* please fix it and tell me how to detect the fix */
		1125	flags &= ~EVBACKEND_EPOLL;
		1126
		1127	return flags;
835	}	1128	}
836		1129
837	unsigned int	1130	unsigned int
838	ev_backend (EV_P)	1131	ev_backend (EV_P)
839	{	1132	{
840	return backend;	1133	return backend;
841	}	1134	}
842		1135
843	static void	1136	unsigned int
		1137	ev_loop_count (EV_P)
		1138	{
		1139	return loop_count;
		1140	}
		1141
		1142	void
		1143	ev_set_io_collect_interval (EV_P_ ev_tstamp interval)
		1144	{
		1145	io_blocktime = interval;
		1146	}
		1147
		1148	void
		1149	ev_set_timeout_collect_interval (EV_P_ ev_tstamp interval)
		1150	{
		1151	timeout_blocktime = interval;
		1152	}
		1153
		1154	static void noinline
844	loop_init (EV_P_ unsigned int flags)	1155	loop_init (EV_P_ unsigned int flags)
845	{	1156	{
846	if (!backend)	1157	if (!backend)
847	{	1158	{
848	#if EV_USE_MONOTONIC	1159	#if EV_USE_MONOTONIC
…		…
851	if (!clock_gettime (CLOCK_MONOTONIC, &ts))	1162	if (!clock_gettime (CLOCK_MONOTONIC, &ts))
852	have_monotonic = 1;	1163	have_monotonic = 1;
853	}	1164	}
854	#endif	1165	#endif
855		1166
856	ev_rt_now = ev_time ();	1167	ev_rt_now = ev_time ();
857	mn_now = get_clock ();	1168	mn_now = get_clock ();
858	now_floor = mn_now;	1169	now_floor = mn_now;
859	rtmn_diff = ev_rt_now - mn_now;	1170	rtmn_diff = ev_rt_now - mn_now;
		1171
		1172	io_blocktime = 0.;
		1173	timeout_blocktime = 0.;
		1174	backend = 0;
		1175	backend_fd = -1;
		1176	gotasync = 0;
		1177	#if EV_USE_INOTIFY
		1178	fs_fd = -2;
		1179	#endif
		1180
		1181	/* pid check not overridable via env */
		1182	#ifndef _WIN32
		1183	if (flags & EVFLAG_FORKCHECK)
		1184	curpid = getpid ();
		1185	#endif
860		1186
861	if (!(flags & EVFLAG_NOENV)	1187	if (!(flags & EVFLAG_NOENV)
862	&& !enable_secure ()	1188	&& !enable_secure ()
863	&& getenv ("LIBEV_FLAGS"))	1189	&& getenv ("LIBEV_FLAGS"))
864	flags = atoi (getenv ("LIBEV_FLAGS"));	1190	flags = atoi (getenv ("LIBEV_FLAGS"));
865		1191
866	if (!(flags & 0x0000ffffUL))	1192	if (!(flags & 0x0000ffffU))
867	flags |= ev_recommended_backends ();	1193	flags |= ev_recommended_backends ();
868		1194
869	backend = 0;
870	#if EV_USE_PORT	1195	#if EV_USE_PORT
871	if (!backend && (flags & EVBACKEND_PORT )) backend = port_init (EV_A_ flags);	1196	if (!backend && (flags & EVBACKEND_PORT )) backend = port_init (EV_A_ flags);
872	#endif	1197	#endif
873	#if EV_USE_KQUEUE	1198	#if EV_USE_KQUEUE
874	if (!backend && (flags & EVBACKEND_KQUEUE)) backend = kqueue_init (EV_A_ flags);	1199	if (!backend && (flags & EVBACKEND_KQUEUE)) backend = kqueue_init (EV_A_ flags);
…		…
881	#endif	1206	#endif
882	#if EV_USE_SELECT	1207	#if EV_USE_SELECT
883	if (!backend && (flags & EVBACKEND_SELECT)) backend = select_init (EV_A_ flags);	1208	if (!backend && (flags & EVBACKEND_SELECT)) backend = select_init (EV_A_ flags);
884	#endif	1209	#endif
885		1210
886	ev_init (&sigev, sigcb);	1211	ev_init (&pipeev, pipecb);
887	ev_set_priority (&sigev, EV_MAXPRI);	1212	ev_set_priority (&pipeev, EV_MAXPRI);
888	}	1213	}
889	}	1214	}
890		1215
891	static void	1216	static void noinline
892	loop_destroy (EV_P)	1217	loop_destroy (EV_P)
893	{	1218	{
894	int i;	1219	int i;
		1220
		1221	if (ev_is_active (&pipeev))
		1222	{
		1223	ev_ref (EV_A); /* signal watcher */
		1224	ev_io_stop (EV_A_ &pipeev);
		1225
		1226	#if EV_USE_EVENTFD
		1227	if (evfd >= 0)
		1228	close (evfd);
		1229	#endif
		1230
		1231	if (evpipe [0] >= 0)
		1232	{
		1233	close (evpipe [0]);
		1234	close (evpipe [1]);
		1235	}
		1236	}
		1237
		1238	#if EV_USE_INOTIFY
		1239	if (fs_fd >= 0)
		1240	close (fs_fd);
		1241	#endif
		1242
		1243	if (backend_fd >= 0)
		1244	close (backend_fd);
895		1245
896	#if EV_USE_PORT	1246	#if EV_USE_PORT
897	if (backend == EVBACKEND_PORT ) port_destroy (EV_A);	1247	if (backend == EVBACKEND_PORT ) port_destroy (EV_A);
898	#endif	1248	#endif
899	#if EV_USE_KQUEUE	1249	#if EV_USE_KQUEUE
…		…
908	#if EV_USE_SELECT	1258	#if EV_USE_SELECT
909	if (backend == EVBACKEND_SELECT) select_destroy (EV_A);	1259	if (backend == EVBACKEND_SELECT) select_destroy (EV_A);
910	#endif	1260	#endif
911		1261
912	for (i = NUMPRI; i--; )	1262	for (i = NUMPRI; i--; )
		1263	{
913	array_free (pending, [i]);	1264	array_free (pending, [i]);
		1265	#if EV_IDLE_ENABLE
		1266	array_free (idle, [i]);
		1267	#endif
		1268	}
		1269
		1270	ev_free (anfds); anfdmax = 0;
914		1271
915	/* have to use the microsoft-never-gets-it-right macro */	1272	/* have to use the microsoft-never-gets-it-right macro */
916	array_free (fdchange, EMPTY0);	1273	array_free (fdchange, EMPTY);
917	array_free (timer, EMPTY0);	1274	array_free (timer, EMPTY);
918	#if EV_PERIODIC_ENABLE	1275	#if EV_PERIODIC_ENABLE
919	array_free (periodic, EMPTY0);	1276	array_free (periodic, EMPTY);
920	#endif	1277	#endif
		1278	#if EV_FORK_ENABLE
921	array_free (idle, EMPTY0);	1279	array_free (fork, EMPTY);
		1280	#endif
922	array_free (prepare, EMPTY0);	1281	array_free (prepare, EMPTY);
923	array_free (check, EMPTY0);	1282	array_free (check, EMPTY);
		1283	#if EV_ASYNC_ENABLE
		1284	array_free (async, EMPTY);
		1285	#endif
924		1286
925	backend = 0;	1287	backend = 0;
926	}	1288	}
927		1289
928	static void	1290	#if EV_USE_INOTIFY
		1291	void inline_size infy_fork (EV_P);
		1292	#endif
		1293
		1294	void inline_size
929	loop_fork (EV_P)	1295	loop_fork (EV_P)
930	{	1296	{
931	#if EV_USE_PORT	1297	#if EV_USE_PORT
932	if (backend == EVBACKEND_PORT ) port_fork (EV_A);	1298	if (backend == EVBACKEND_PORT ) port_fork (EV_A);
933	#endif	1299	#endif
…		…
935	if (backend == EVBACKEND_KQUEUE) kqueue_fork (EV_A);	1301	if (backend == EVBACKEND_KQUEUE) kqueue_fork (EV_A);
936	#endif	1302	#endif
937	#if EV_USE_EPOLL	1303	#if EV_USE_EPOLL
938	if (backend == EVBACKEND_EPOLL ) epoll_fork (EV_A);	1304	if (backend == EVBACKEND_EPOLL ) epoll_fork (EV_A);
939	#endif	1305	#endif
		1306	#if EV_USE_INOTIFY
		1307	infy_fork (EV_A);
		1308	#endif
940		1309
941	if (ev_is_active (&sigev))	1310	if (ev_is_active (&pipeev))
942	{	1311	{
943	/* default loop */	1312	/* this "locks" the handlers against writing to the pipe */
		1313	/* while we modify the fd vars */
		1314	gotsig = 1;
		1315	#if EV_ASYNC_ENABLE
		1316	gotasync = 1;
		1317	#endif
944		1318
945	ev_ref (EV_A);	1319	ev_ref (EV_A);
946	ev_io_stop (EV_A_ &sigev);	1320	ev_io_stop (EV_A_ &pipeev);
		1321
		1322	#if EV_USE_EVENTFD
		1323	if (evfd >= 0)
		1324	close (evfd);
		1325	#endif
		1326
		1327	if (evpipe [0] >= 0)
		1328	{
947	close (sigpipe [0]);	1329	close (evpipe [0]);
948	close (sigpipe [1]);	1330	close (evpipe [1]);
		1331	}
949		1332
950	while (pipe (sigpipe))
951	syserr ("(libev) error creating pipe");
952
953	siginit (EV_A);	1333	evpipe_init (EV_A);
		1334	/* now iterate over everything, in case we missed something */
		1335	pipecb (EV_A_ &pipeev, EV_READ);
954	}	1336	}
955		1337
956	postfork = 0;	1338	postfork = 0;
957	}	1339	}
958		1340
…		…
980	}	1362	}
981		1363
982	void	1364	void
983	ev_loop_fork (EV_P)	1365	ev_loop_fork (EV_P)
984	{	1366	{
985	postfork = 1;	1367	postfork = 1; /* must be in line with ev_default_fork */
986	}	1368	}
987		1369
988	#endif	1370	#endif
989		1371
990	#if EV_MULTIPLICITY	1372	#if EV_MULTIPLICITY
…		…
993	#else	1375	#else
994	int	1376	int
995	ev_default_loop (unsigned int flags)	1377	ev_default_loop (unsigned int flags)
996	#endif	1378	#endif
997	{	1379	{
998	if (sigpipe [0] == sigpipe [1])
999	if (pipe (sigpipe))
1000	return 0;
1001
1002	if (!ev_default_loop_ptr)	1380	if (!ev_default_loop_ptr)
1003	{	1381	{
1004	#if EV_MULTIPLICITY	1382	#if EV_MULTIPLICITY
1005	struct ev_loop *loop = ev_default_loop_ptr = &default_loop_struct;	1383	struct ev_loop *loop = ev_default_loop_ptr = &default_loop_struct;
1006	#else	1384	#else
…		…
1009		1387
1010	loop_init (EV_A_ flags);	1388	loop_init (EV_A_ flags);
1011		1389
1012	if (ev_backend (EV_A))	1390	if (ev_backend (EV_A))
1013	{	1391	{
1014	siginit (EV_A);
1015
1016	#ifndef _WIN32	1392	#ifndef _WIN32
1017	ev_signal_init (&childev, childcb, SIGCHLD);	1393	ev_signal_init (&childev, childcb, SIGCHLD);
1018	ev_set_priority (&childev, EV_MAXPRI);	1394	ev_set_priority (&childev, EV_MAXPRI);
1019	ev_signal_start (EV_A_ &childev);	1395	ev_signal_start (EV_A_ &childev);
1020	ev_unref (EV_A); /* child watcher should not keep loop alive */	1396	ev_unref (EV_A); /* child watcher should not keep loop alive */
…		…
1037	#ifndef _WIN32	1413	#ifndef _WIN32
1038	ev_ref (EV_A); /* child watcher */	1414	ev_ref (EV_A); /* child watcher */
1039	ev_signal_stop (EV_A_ &childev);	1415	ev_signal_stop (EV_A_ &childev);
1040	#endif	1416	#endif
1041		1417
1042	ev_ref (EV_A); /* signal watcher */
1043	ev_io_stop (EV_A_ &sigev);
1044
1045	close (sigpipe [0]); sigpipe [0] = 0;
1046	close (sigpipe [1]); sigpipe [1] = 0;
1047
1048	loop_destroy (EV_A);	1418	loop_destroy (EV_A);
1049	}	1419	}
1050		1420
1051	void	1421	void
1052	ev_default_fork (void)	1422	ev_default_fork (void)
…		…
1054	#if EV_MULTIPLICITY	1424	#if EV_MULTIPLICITY
1055	struct ev_loop *loop = ev_default_loop_ptr;	1425	struct ev_loop *loop = ev_default_loop_ptr;
1056	#endif	1426	#endif
1057		1427
1058	if (backend)	1428	if (backend)
1059	postfork = 1;	1429	postfork = 1; /* must be in line with ev_loop_fork */
1060	}	1430	}
1061		1431
1062	/*****************************************************************************/	1432	/*****************************************************************************/
1063		1433
1064	int inline_size	1434	void
1065	any_pending (EV_P)	1435	ev_invoke (EV_P_ void *w, int revents)
1066	{	1436	{
1067	int pri;	1437	EV_CB_INVOKE ((W)w, revents);
1068
1069	for (pri = NUMPRI; pri--; )
1070	if (pendingcnt [pri])
1071	return 1;
1072
1073	return 0;
1074	}	1438	}
1075		1439
1076	void inline_speed	1440	void inline_speed
1077	call_pending (EV_P)	1441	call_pending (EV_P)
1078	{	1442	{
…		…
1083	{	1447	{
1084	ANPENDING *p = pendings [pri] + --pendingcnt [pri];	1448	ANPENDING *p = pendings [pri] + --pendingcnt [pri];
1085		1449
1086	if (expect_true (p->w))	1450	if (expect_true (p->w))
1087	{	1451	{
1088	assert (("non-pending watcher on pending list", p->w->pending));	1452	/*assert (("non-pending watcher on pending list", p->w->pending));*/
1089		1453
1090	p->w->pending = 0;	1454	p->w->pending = 0;
1091	EV_CB_INVOKE (p->w, p->events);	1455	EV_CB_INVOKE (p->w, p->events);
1092	}	1456	}
1093	}	1457	}
…		…
1096	void inline_size	1460	void inline_size
1097	timers_reify (EV_P)	1461	timers_reify (EV_P)
1098	{	1462	{
1099	while (timercnt && ((WT)timers [0])->at <= mn_now)	1463	while (timercnt && ((WT)timers [0])->at <= mn_now)
1100	{	1464	{
1101	ev_timer *w = timers [0];	1465	ev_timer *w = (ev_timer *)timers [0];
1102		1466
1103	assert (("inactive timer on timer heap detected", ev_is_active (w)));	1467	/*assert (("inactive timer on timer heap detected", ev_is_active (w)));*/
1104		1468
1105	/* first reschedule or stop timer */	1469	/* first reschedule or stop timer */
1106	if (w->repeat)	1470	if (w->repeat)
1107	{	1471	{
1108	assert (("negative ev_timer repeat value found while processing timers", w->repeat > 0.));	1472	assert (("negative ev_timer repeat value found while processing timers", w->repeat > 0.));
1109		1473
1110	((WT)w)->at += w->repeat;	1474	((WT)w)->at += w->repeat;
1111	if (((WT)w)->at < mn_now)	1475	if (((WT)w)->at < mn_now)
1112	((WT)w)->at = mn_now;	1476	((WT)w)->at = mn_now;
1113		1477
1114	downheap ((WT *)timers, timercnt, 0);	1478	downheap (timers, timercnt, 0);
1115	}	1479	}
1116	else	1480	else
1117	ev_timer_stop (EV_A_ w); /* nonrepeating: stop timer */	1481	ev_timer_stop (EV_A_ w); /* nonrepeating: stop timer */
1118		1482
1119	ev_feed_event (EV_A_ (W)w, EV_TIMEOUT);	1483	ev_feed_event (EV_A_ (W)w, EV_TIMEOUT);
…		…
1124	void inline_size	1488	void inline_size
1125	periodics_reify (EV_P)	1489	periodics_reify (EV_P)
1126	{	1490	{
1127	while (periodiccnt && ((WT)periodics [0])->at <= ev_rt_now)	1491	while (periodiccnt && ((WT)periodics [0])->at <= ev_rt_now)
1128	{	1492	{
1129	ev_periodic *w = periodics [0];	1493	ev_periodic *w = (ev_periodic *)periodics [0];
1130		1494
1131	assert (("inactive timer on periodic heap detected", ev_is_active (w)));	1495	/*assert (("inactive timer on periodic heap detected", ev_is_active (w)));*/
1132		1496
1133	/* first reschedule or stop timer */	1497	/* first reschedule or stop timer */
1134	if (w->reschedule_cb)	1498	if (w->reschedule_cb)
1135	{	1499	{
1136	((WT)w)->at = w->reschedule_cb (w, ev_rt_now + 0.0001);	1500	((WT)w)->at = w->reschedule_cb (w, ev_rt_now + TIME_EPSILON);
1137	assert (("ev_periodic reschedule callback returned time in the past", ((WT)w)->at > ev_rt_now));	1501	assert (("ev_periodic reschedule callback returned time in the past", ((WT)w)->at > ev_rt_now));
1138	downheap ((WT *)periodics, periodiccnt, 0);	1502	downheap (periodics, periodiccnt, 0);
1139	}	1503	}
1140	else if (w->interval)	1504	else if (w->interval)
1141	{	1505	{
1142	((WT)w)->at += floor ((ev_rt_now - ((WT)w)->at) / w->interval + 1.) * w->interval;	1506	((WT)w)->at = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval;
		1507	if (((WT)w)->at - ev_rt_now <= TIME_EPSILON) ((WT)w)->at += w->interval;
1143	assert (("ev_periodic timeout in the past detected while processing timers, negative interval?", ((WT)w)->at > ev_rt_now));	1508	assert (("ev_periodic timeout in the past detected while processing timers, negative interval?", ((WT)w)->at > ev_rt_now));
1144	downheap ((WT *)periodics, periodiccnt, 0);	1509	downheap (periodics, periodiccnt, 0);
1145	}	1510	}
1146	else	1511	else
1147	ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */	1512	ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */
1148		1513
1149	ev_feed_event (EV_A_ (W)w, EV_PERIODIC);	1514	ev_feed_event (EV_A_ (W)w, EV_PERIODIC);
…		…
1156	int i;	1521	int i;
1157		1522
1158	/* adjust periodics after time jump */	1523	/* adjust periodics after time jump */
1159	for (i = 0; i < periodiccnt; ++i)	1524	for (i = 0; i < periodiccnt; ++i)
1160	{	1525	{
1161	ev_periodic *w = periodics [i];	1526	ev_periodic *w = (ev_periodic *)periodics [i];
1162		1527
1163	if (w->reschedule_cb)	1528	if (w->reschedule_cb)
1164	((WT)w)->at = w->reschedule_cb (w, ev_rt_now);	1529	((WT)w)->at = w->reschedule_cb (w, ev_rt_now);
1165	else if (w->interval)	1530	else if (w->interval)
1166	((WT)w)->at += ceil ((ev_rt_now - ((WT)w)->at) / w->interval) * w->interval;	1531	((WT)w)->at = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval;
1167	}	1532	}
1168		1533
1169	/* now rebuild the heap */	1534	/* now rebuild the heap */
1170	for (i = periodiccnt >> 1; i--; )	1535	for (i = periodiccnt >> 1; i--; )
1171	downheap ((WT *)periodics, periodiccnt, i);	1536	downheap (periodics, periodiccnt, i);
1172	}	1537	}
1173	#endif	1538	#endif
1174		1539
		1540	#if EV_IDLE_ENABLE
1175	int inline_size	1541	void inline_size
1176	time_update_monotonic (EV_P)	1542	idle_reify (EV_P)
1177	{	1543	{
		1544	if (expect_false (idleall))
		1545	{
		1546	int pri;
		1547
		1548	for (pri = NUMPRI; pri--; )
		1549	{
		1550	if (pendingcnt [pri])
		1551	break;
		1552
		1553	if (idlecnt [pri])
		1554	{
		1555	queue_events (EV_A_ (W *)idles [pri], idlecnt [pri], EV_IDLE);
		1556	break;
		1557	}
		1558	}
		1559	}
		1560	}
		1561	#endif
		1562
		1563	void inline_speed
		1564	time_update (EV_P_ ev_tstamp max_block)
		1565	{
		1566	int i;
		1567
		1568	#if EV_USE_MONOTONIC
		1569	if (expect_true (have_monotonic))
		1570	{
		1571	ev_tstamp odiff = rtmn_diff;
		1572
1178	mn_now = get_clock ();	1573	mn_now = get_clock ();
1179		1574
		1575	/* only fetch the realtime clock every 0.5*MIN_TIMEJUMP seconds */
		1576	/* interpolate in the meantime */
1180	if (expect_true (mn_now - now_floor < MIN_TIMEJUMP * .5))	1577	if (expect_true (mn_now - now_floor < MIN_TIMEJUMP * .5))
1181	{	1578	{
1182	ev_rt_now = rtmn_diff + mn_now;	1579	ev_rt_now = rtmn_diff + mn_now;
1183	return 0;	1580	return;
1184	}	1581	}
1185	else	1582
1186	{
1187	now_floor = mn_now;	1583	now_floor = mn_now;
1188	ev_rt_now = ev_time ();	1584	ev_rt_now = ev_time ();
1189	return 1;
1190	}
1191	}
1192		1585
1193	void inline_size	1586	/* loop a few times, before making important decisions.
1194	time_update (EV_P)	1587	* on the choice of "4": one iteration isn't enough,
1195	{	1588	* in case we get preempted during the calls to
1196	int i;	1589	* ev_time and get_clock. a second call is almost guaranteed
1197		1590	* to succeed in that case, though. and looping a few more times
1198	#if EV_USE_MONOTONIC	1591	* doesn't hurt either as we only do this on time-jumps or
1199	if (expect_true (have_monotonic))	1592	* in the unlikely event of having been preempted here.
1200	{	1593	*/
1201	if (time_update_monotonic (EV_A))	1594	for (i = 4; --i; )
1202	{	1595	{
1203	ev_tstamp odiff = rtmn_diff;
1204
1205	/* loop a few times, before making important decisions.
1206	* on the choice of "4": one iteration isn't enough,
1207	* in case we get preempted during the calls to
1208	* ev_time and get_clock. a second call is almost guarenteed
1209	* to succeed in that case, though. and looping a few more times
1210	* doesn't hurt either as we only do this on time-jumps or
1211	* in the unlikely event of getting preempted here.
1212	*/
1213	for (i = 4; --i; )
1214	{
1215	rtmn_diff = ev_rt_now - mn_now;	1596	rtmn_diff = ev_rt_now - mn_now;
1216		1597
1217	if (fabs (odiff - rtmn_diff) < MIN_TIMEJUMP)	1598	if (fabs (odiff - rtmn_diff) < MIN_TIMEJUMP)
1218	return; /* all is well */	1599	return; /* all is well */
1219		1600
1220	ev_rt_now = ev_time ();	1601	ev_rt_now = ev_time ();
1221	mn_now = get_clock ();	1602	mn_now = get_clock ();
1222	now_floor = mn_now;	1603	now_floor = mn_now;
1223	}	1604	}
1224		1605
1225	# if EV_PERIODIC_ENABLE	1606	# if EV_PERIODIC_ENABLE
1226	periodics_reschedule (EV_A);	1607	periodics_reschedule (EV_A);
1227	# endif	1608	# endif
1228	/* no timer adjustment, as the monotonic clock doesn't jump */	1609	/* no timer adjustment, as the monotonic clock doesn't jump */
1229	/* timers_reschedule (EV_A_ rtmn_diff - odiff) */	1610	/* timers_reschedule (EV_A_ rtmn_diff - odiff) */
1230	}
1231	}	1611	}
1232	else	1612	else
1233	#endif	1613	#endif
1234	{	1614	{
1235	ev_rt_now = ev_time ();	1615	ev_rt_now = ev_time ();
1236		1616
1237	if (expect_false (mn_now > ev_rt_now || mn_now < ev_rt_now - MAX_BLOCKTIME - MIN_TIMEJUMP))	1617	if (expect_false (mn_now > ev_rt_now || ev_rt_now > mn_now + max_block + MIN_TIMEJUMP))
1238	{	1618	{
1239	#if EV_PERIODIC_ENABLE	1619	#if EV_PERIODIC_ENABLE
1240	periodics_reschedule (EV_A);	1620	periodics_reschedule (EV_A);
1241	#endif	1621	#endif
1242
1243	/* adjust timers. this is easy, as the offset is the same for all */	1622	/* adjust timers. this is easy, as the offset is the same for all of them */
1244	for (i = 0; i < timercnt; ++i)	1623	for (i = 0; i < timercnt; ++i)
1245	((WT)timers [i])->at += ev_rt_now - mn_now;	1624	((WT)timers [i])->at += ev_rt_now - mn_now;
1246	}	1625	}
1247		1626
1248	mn_now = ev_rt_now;	1627	mn_now = ev_rt_now;
…		…
1264	static int loop_done;	1643	static int loop_done;
1265		1644
1266	void	1645	void
1267	ev_loop (EV_P_ int flags)	1646	ev_loop (EV_P_ int flags)
1268	{	1647	{
1269	loop_done = flags & (EVLOOP_ONESHOT | EVLOOP_NONBLOCK)	1648	loop_done = EVUNLOOP_CANCEL;
1270	? EVUNLOOP_ONE
1271	: EVUNLOOP_CANCEL;
1272		1649
1273	while (activecnt)	1650	call_pending (EV_A); /* in case we recurse, ensure ordering stays nice and clean */
		1651
		1652	do
1274	{	1653	{
		1654	#ifndef _WIN32
		1655	if (expect_false (curpid)) /* penalise the forking check even more */
		1656	if (expect_false (getpid () != curpid))
		1657	{
		1658	curpid = getpid ();
		1659	postfork = 1;
		1660	}
		1661	#endif
		1662
		1663	#if EV_FORK_ENABLE
		1664	/* we might have forked, so queue fork handlers */
		1665	if (expect_false (postfork))
		1666	if (forkcnt)
		1667	{
		1668	queue_events (EV_A_ (W *)forks, forkcnt, EV_FORK);
		1669	call_pending (EV_A);
		1670	}
		1671	#endif
		1672
1275	/* queue check watchers (and execute them) */	1673	/* queue prepare watchers (and execute them) */
1276	if (expect_false (preparecnt))	1674	if (expect_false (preparecnt))
1277	{	1675	{
1278	queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE);	1676	queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE);
1279	call_pending (EV_A);	1677	call_pending (EV_A);
1280	}	1678	}
1281		1679
		1680	if (expect_false (!activecnt))
		1681	break;
		1682
1282	/* we might have forked, so reify kernel state if necessary */	1683	/* we might have forked, so reify kernel state if necessary */
1283	if (expect_false (postfork))	1684	if (expect_false (postfork))
1284	loop_fork (EV_A);	1685	loop_fork (EV_A);
1285		1686
1286	/* update fd-related kernel structures */	1687	/* update fd-related kernel structures */
1287	fd_reify (EV_A);	1688	fd_reify (EV_A);
1288		1689
1289	/* calculate blocking time */	1690	/* calculate blocking time */
1290	{	1691	{
1291	double block;	1692	ev_tstamp waittime = 0.;
		1693	ev_tstamp sleeptime = 0.;
1292		1694
1293	if (flags & EVLOOP_NONBLOCK || idlecnt)	1695	if (expect_true (!(flags & EVLOOP_NONBLOCK || idleall || !activecnt)))
1294	block = 0.; /* do not block at all */
1295	else
1296	{	1696	{
1297	/* update time to cancel out callback processing overhead */	1697	/* update time to cancel out callback processing overhead */
1298	#if EV_USE_MONOTONIC
1299	if (expect_true (have_monotonic))
1300	time_update_monotonic (EV_A);	1698	time_update (EV_A_ 1e100);
1301	else
1302	#endif
1303	{
1304	ev_rt_now = ev_time ();
1305	mn_now = ev_rt_now;
1306	}
1307		1699
1308	block = MAX_BLOCKTIME;	1700	waittime = MAX_BLOCKTIME;
1309		1701
1310	if (timercnt)	1702	if (timercnt)
1311	{	1703	{
1312	ev_tstamp to = ((WT)timers [0])->at - mn_now + backend_fudge;	1704	ev_tstamp to = ((WT)timers [0])->at - mn_now + backend_fudge;
1313	if (block > to) block = to;	1705	if (waittime > to) waittime = to;
1314	}	1706	}
1315		1707
1316	#if EV_PERIODIC_ENABLE	1708	#if EV_PERIODIC_ENABLE
1317	if (periodiccnt)	1709	if (periodiccnt)
1318	{	1710	{
1319	ev_tstamp to = ((WT)periodics [0])->at - ev_rt_now + backend_fudge;	1711	ev_tstamp to = ((WT)periodics [0])->at - ev_rt_now + backend_fudge;
1320	if (block > to) block = to;	1712	if (waittime > to) waittime = to;
1321	}	1713	}
1322	#endif	1714	#endif
1323		1715
1324	if (expect_false (block < 0.)) block = 0.;	1716	if (expect_false (waittime < timeout_blocktime))
		1717	waittime = timeout_blocktime;
		1718
		1719	sleeptime = waittime - backend_fudge;
		1720
		1721	if (expect_true (sleeptime > io_blocktime))
		1722	sleeptime = io_blocktime;
		1723
		1724	if (sleeptime)
		1725	{
		1726	ev_sleep (sleeptime);
		1727	waittime -= sleeptime;
		1728	}
1325	}	1729	}
1326		1730
		1731	++loop_count;
1327	backend_poll (EV_A_ block);	1732	backend_poll (EV_A_ waittime);
		1733
		1734	/* update ev_rt_now, do magic */
		1735	time_update (EV_A_ waittime + sleeptime);
1328	}	1736	}
1329
1330	/* update ev_rt_now, do magic */
1331	time_update (EV_A);
1332		1737
1333	/* queue pending timers and reschedule them */	1738	/* queue pending timers and reschedule them */
1334	timers_reify (EV_A); /* relative timers called last */	1739	timers_reify (EV_A); /* relative timers called last */
1335	#if EV_PERIODIC_ENABLE	1740	#if EV_PERIODIC_ENABLE
1336	periodics_reify (EV_A); /* absolute timers called first */	1741	periodics_reify (EV_A); /* absolute timers called first */
1337	#endif	1742	#endif
1338		1743
		1744	#if EV_IDLE_ENABLE
1339	/* queue idle watchers unless other events are pending */	1745	/* queue idle watchers unless other events are pending */
1340	if (idlecnt && !any_pending (EV_A))	1746	idle_reify (EV_A);
1341	queue_events (EV_A_ (W *)idles, idlecnt, EV_IDLE);	1747	#endif
1342		1748
1343	/* queue check watchers, to be executed first */	1749	/* queue check watchers, to be executed first */
1344	if (expect_false (checkcnt))	1750	if (expect_false (checkcnt))
1345	queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK);	1751	queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK);
1346		1752
1347	call_pending (EV_A);	1753	call_pending (EV_A);
1348
1349	if (expect_false (loop_done))
1350	break;
1351	}	1754	}
		1755	while (expect_true (
		1756	activecnt
		1757	&& !loop_done
		1758	&& !(flags & (EVLOOP_ONESHOT | EVLOOP_NONBLOCK))
		1759	));
1352		1760
1353	if (loop_done == EVUNLOOP_ONE)	1761	if (loop_done == EVUNLOOP_ONE)
1354	loop_done = EVUNLOOP_CANCEL;	1762	loop_done = EVUNLOOP_CANCEL;
1355	}	1763	}
1356		1764
…		…
1383	head = &(*head)->next;	1791	head = &(*head)->next;
1384	}	1792	}
1385	}	1793	}
1386		1794
1387	void inline_speed	1795	void inline_speed
1388	ev_clear_pending (EV_P_ W w)	1796	clear_pending (EV_P_ W w)
1389	{	1797	{
1390	if (w->pending)	1798	if (w->pending)
1391	{	1799	{
1392	pendings [ABSPRI (w)][w->pending - 1].w = 0;	1800	pendings [ABSPRI (w)][w->pending - 1].w = 0;
1393	w->pending = 0;	1801	w->pending = 0;
1394	}	1802	}
1395	}	1803	}
1396		1804
		1805	int
		1806	ev_clear_pending (EV_P_ void *w)
		1807	{
		1808	W w_ = (W)w;
		1809	int pending = w_->pending;
		1810
		1811	if (expect_true (pending))
		1812	{
		1813	ANPENDING *p = pendings [ABSPRI (w_)] + pending - 1;
		1814	w_->pending = 0;
		1815	p->w = 0;
		1816	return p->events;
		1817	}
		1818	else
		1819	return 0;
		1820	}
		1821
		1822	void inline_size
		1823	pri_adjust (EV_P_ W w)
		1824	{
		1825	int pri = w->priority;
		1826	pri = pri < EV_MINPRI ? EV_MINPRI : pri;
		1827	pri = pri > EV_MAXPRI ? EV_MAXPRI : pri;
		1828	w->priority = pri;
		1829	}
		1830
1397	void inline_speed	1831	void inline_speed
1398	ev_start (EV_P_ W w, int active)	1832	ev_start (EV_P_ W w, int active)
1399	{	1833	{
1400	if (w->priority < EV_MINPRI) w->priority = EV_MINPRI;	1834	pri_adjust (EV_A_ w);
1401	if (w->priority > EV_MAXPRI) w->priority = EV_MAXPRI;
1402
1403	w->active = active;	1835	w->active = active;
1404	ev_ref (EV_A);	1836	ev_ref (EV_A);
1405	}	1837	}
1406		1838
1407	void inline_size	1839	void inline_size
…		…
1411	w->active = 0;	1843	w->active = 0;
1412	}	1844	}
1413		1845
1414	/*****************************************************************************/	1846	/*****************************************************************************/
1415		1847
1416	void	1848	void noinline
1417	ev_io_start (EV_P_ ev_io *w)	1849	ev_io_start (EV_P_ ev_io *w)
1418	{	1850	{
1419	int fd = w->fd;	1851	int fd = w->fd;
1420		1852
1421	if (expect_false (ev_is_active (w)))	1853	if (expect_false (ev_is_active (w)))
…		…
1423		1855
1424	assert (("ev_io_start called with negative fd", fd >= 0));	1856	assert (("ev_io_start called with negative fd", fd >= 0));
1425		1857
1426	ev_start (EV_A_ (W)w, 1);	1858	ev_start (EV_A_ (W)w, 1);
1427	array_needsize (ANFD, anfds, anfdmax, fd + 1, anfds_init);	1859	array_needsize (ANFD, anfds, anfdmax, fd + 1, anfds_init);
1428	wlist_add ((WL *)&anfds[fd].head, (WL)w);	1860	wlist_add (&anfds[fd].head, (WL)w);
1429		1861
1430	fd_change (EV_A_ fd);	1862	fd_change (EV_A_ fd, w->events & EV_IOFDSET | 1);
		1863	w->events &= ~EV_IOFDSET;
1431	}	1864	}
1432		1865
1433	void	1866	void noinline
1434	ev_io_stop (EV_P_ ev_io *w)	1867	ev_io_stop (EV_P_ ev_io *w)
1435	{	1868	{
1436	ev_clear_pending (EV_A_ (W)w);	1869	clear_pending (EV_A_ (W)w);
1437	if (expect_false (!ev_is_active (w)))	1870	if (expect_false (!ev_is_active (w)))
1438	return;	1871	return;
1439		1872
1440	assert (("ev_io_start called with illegal fd (must stay constant after start!)", w->fd >= 0 && w->fd < anfdmax));	1873	assert (("ev_io_start called with illegal fd (must stay constant after start!)", w->fd >= 0 && w->fd < anfdmax));
1441		1874
1442	wlist_del ((WL *)&anfds[w->fd].head, (WL)w);	1875	wlist_del (&anfds[w->fd].head, (WL)w);
1443	ev_stop (EV_A_ (W)w);	1876	ev_stop (EV_A_ (W)w);
1444		1877
1445	fd_change (EV_A_ w->fd);	1878	fd_change (EV_A_ w->fd, 1);
1446	}	1879	}
1447		1880
1448	void	1881	void noinline
1449	ev_timer_start (EV_P_ ev_timer *w)	1882	ev_timer_start (EV_P_ ev_timer *w)
1450	{	1883	{
1451	if (expect_false (ev_is_active (w)))	1884	if (expect_false (ev_is_active (w)))
1452	return;	1885	return;
1453		1886
1454	((WT)w)->at += mn_now;	1887	((WT)w)->at += mn_now;
1455		1888
1456	assert (("ev_timer_start called with negative timer repeat value", w->repeat >= 0.));	1889	assert (("ev_timer_start called with negative timer repeat value", w->repeat >= 0.));
1457		1890
1458	ev_start (EV_A_ (W)w, ++timercnt);	1891	ev_start (EV_A_ (W)w, ++timercnt);
1459	array_needsize (ev_timer *, timers, timermax, timercnt, EMPTY2);	1892	array_needsize (WT, timers, timermax, timercnt, EMPTY2);
1460	timers [timercnt - 1] = w;	1893	timers [timercnt - 1] = (WT)w;
1461	upheap ((WT *)timers, timercnt - 1);	1894	upheap (timers, timercnt - 1);
1462		1895
1463	assert (("internal timer heap corruption", timers [((W)w)->active - 1] == w));	1896	/*assert (("internal timer heap corruption", timers [((W)w)->active - 1] == w));*/
1464	}	1897	}
1465		1898
1466	void	1899	void noinline
1467	ev_timer_stop (EV_P_ ev_timer *w)	1900	ev_timer_stop (EV_P_ ev_timer *w)
1468	{	1901	{
1469	ev_clear_pending (EV_A_ (W)w);	1902	clear_pending (EV_A_ (W)w);
1470	if (expect_false (!ev_is_active (w)))	1903	if (expect_false (!ev_is_active (w)))
1471	return;	1904	return;
1472		1905
1473	assert (("internal timer heap corruption", timers [((W)w)->active - 1] == w));	1906	assert (("internal timer heap corruption", timers [((W)w)->active - 1] == (WT)w));
1474		1907
		1908	{
		1909	int active = ((W)w)->active;
		1910
1475	if (expect_true (((W)w)->active < timercnt--))	1911	if (expect_true (--active < --timercnt))
1476	{	1912	{
1477	timers [((W)w)->active - 1] = timers [timercnt];	1913	timers [active] = timers [timercnt];
1478	adjustheap ((WT *)timers, timercnt, ((W)w)->active - 1);	1914	adjustheap (timers, timercnt, active);
1479	}	1915	}
		1916	}
1480		1917
1481	((WT)w)->at -= mn_now;	1918	((WT)w)->at -= mn_now;
1482		1919
1483	ev_stop (EV_A_ (W)w);	1920	ev_stop (EV_A_ (W)w);
1484	}	1921	}
1485		1922
1486	void	1923	void noinline
1487	ev_timer_again (EV_P_ ev_timer *w)	1924	ev_timer_again (EV_P_ ev_timer *w)
1488	{	1925	{
1489	if (ev_is_active (w))	1926	if (ev_is_active (w))
1490	{	1927	{
1491	if (w->repeat)	1928	if (w->repeat)
1492	{	1929	{
1493	((WT)w)->at = mn_now + w->repeat;	1930	((WT)w)->at = mn_now + w->repeat;
1494	adjustheap ((WT *)timers, timercnt, ((W)w)->active - 1);	1931	adjustheap (timers, timercnt, ((W)w)->active - 1);
1495	}	1932	}
1496	else	1933	else
1497	ev_timer_stop (EV_A_ w);	1934	ev_timer_stop (EV_A_ w);
1498	}	1935	}
1499	else if (w->repeat)	1936	else if (w->repeat)
…		…
1502	ev_timer_start (EV_A_ w);	1939	ev_timer_start (EV_A_ w);
1503	}	1940	}
1504	}	1941	}
1505		1942
1506	#if EV_PERIODIC_ENABLE	1943	#if EV_PERIODIC_ENABLE
1507	void	1944	void noinline
1508	ev_periodic_start (EV_P_ ev_periodic *w)	1945	ev_periodic_start (EV_P_ ev_periodic *w)
1509	{	1946	{
1510	if (expect_false (ev_is_active (w)))	1947	if (expect_false (ev_is_active (w)))
1511	return;	1948	return;
1512		1949
…		…
1514	((WT)w)->at = w->reschedule_cb (w, ev_rt_now);	1951	((WT)w)->at = w->reschedule_cb (w, ev_rt_now);
1515	else if (w->interval)	1952	else if (w->interval)
1516	{	1953	{
1517	assert (("ev_periodic_start called with negative interval value", w->interval >= 0.));	1954	assert (("ev_periodic_start called with negative interval value", w->interval >= 0.));
1518	/* this formula differs from the one in periodic_reify because we do not always round up */	1955	/* this formula differs from the one in periodic_reify because we do not always round up */
1519	((WT)w)->at += ceil ((ev_rt_now - ((WT)w)->at) / w->interval) * w->interval;	1956	((WT)w)->at = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval;
1520	}	1957	}
		1958	else
		1959	((WT)w)->at = w->offset;
1521		1960
1522	ev_start (EV_A_ (W)w, ++periodiccnt);	1961	ev_start (EV_A_ (W)w, ++periodiccnt);
1523	array_needsize (ev_periodic *, periodics, periodicmax, periodiccnt, EMPTY2);	1962	array_needsize (WT, periodics, periodicmax, periodiccnt, EMPTY2);
1524	periodics [periodiccnt - 1] = w;	1963	periodics [periodiccnt - 1] = (WT)w;
1525	upheap ((WT *)periodics, periodiccnt - 1);	1964	upheap (periodics, periodiccnt - 1);
1526		1965
1527	assert (("internal periodic heap corruption", periodics [((W)w)->active - 1] == w));	1966	/*assert (("internal periodic heap corruption", periodics [((W)w)->active - 1] == w));*/
1528	}	1967	}
1529		1968
1530	void	1969	void noinline
1531	ev_periodic_stop (EV_P_ ev_periodic *w)	1970	ev_periodic_stop (EV_P_ ev_periodic *w)
1532	{	1971	{
1533	ev_clear_pending (EV_A_ (W)w);	1972	clear_pending (EV_A_ (W)w);
1534	if (expect_false (!ev_is_active (w)))	1973	if (expect_false (!ev_is_active (w)))
1535	return;	1974	return;
1536		1975
1537	assert (("internal periodic heap corruption", periodics [((W)w)->active - 1] == w));	1976	assert (("internal periodic heap corruption", periodics [((W)w)->active - 1] == (WT)w));
1538		1977
		1978	{
		1979	int active = ((W)w)->active;
		1980
1539	if (expect_true (((W)w)->active < periodiccnt--))	1981	if (expect_true (--active < --periodiccnt))
1540	{	1982	{
1541	periodics [((W)w)->active - 1] = periodics [periodiccnt];	1983	periodics [active] = periodics [periodiccnt];
1542	adjustheap ((WT *)periodics, periodiccnt, ((W)w)->active - 1);	1984	adjustheap (periodics, periodiccnt, active);
1543	}	1985	}
		1986	}
1544		1987
1545	ev_stop (EV_A_ (W)w);	1988	ev_stop (EV_A_ (W)w);
1546	}	1989	}
1547		1990
1548	void	1991	void noinline
1549	ev_periodic_again (EV_P_ ev_periodic *w)	1992	ev_periodic_again (EV_P_ ev_periodic *w)
1550	{	1993	{
1551	/* TODO: use adjustheap and recalculation */	1994	/* TODO: use adjustheap and recalculation */
1552	ev_periodic_stop (EV_A_ w);	1995	ev_periodic_stop (EV_A_ w);
1553	ev_periodic_start (EV_A_ w);	1996	ev_periodic_start (EV_A_ w);
1554	}	1997	}
1555	#endif	1998	#endif
1556		1999
		2000	#ifndef SA_RESTART
		2001	# define SA_RESTART 0
		2002	#endif
		2003
		2004	void noinline
		2005	ev_signal_start (EV_P_ ev_signal *w)
		2006	{
		2007	#if EV_MULTIPLICITY
		2008	assert (("signal watchers are only supported in the default loop", loop == ev_default_loop_ptr));
		2009	#endif
		2010	if (expect_false (ev_is_active (w)))
		2011	return;
		2012
		2013	assert (("ev_signal_start called with illegal signal number", w->signum > 0));
		2014
		2015	evpipe_init (EV_A);
		2016
		2017	{
		2018	#ifndef _WIN32
		2019	sigset_t full, prev;
		2020	sigfillset (&full);
		2021	sigprocmask (SIG_SETMASK, &full, &prev);
		2022	#endif
		2023
		2024	array_needsize (ANSIG, signals, signalmax, w->signum, signals_init);
		2025
		2026	#ifndef _WIN32
		2027	sigprocmask (SIG_SETMASK, &prev, 0);
		2028	#endif
		2029	}
		2030
		2031	ev_start (EV_A_ (W)w, 1);
		2032	wlist_add (&signals [w->signum - 1].head, (WL)w);
		2033
		2034	if (!((WL)w)->next)
		2035	{
		2036	#if _WIN32
		2037	signal (w->signum, ev_sighandler);
		2038	#else
		2039	struct sigaction sa;
		2040	sa.sa_handler = ev_sighandler;
		2041	sigfillset (&sa.sa_mask);
		2042	sa.sa_flags = SA_RESTART; /* if restarting works we save one iteration */
		2043	sigaction (w->signum, &sa, 0);
		2044	#endif
		2045	}
		2046	}
		2047
		2048	void noinline
		2049	ev_signal_stop (EV_P_ ev_signal *w)
		2050	{
		2051	clear_pending (EV_A_ (W)w);
		2052	if (expect_false (!ev_is_active (w)))
		2053	return;
		2054
		2055	wlist_del (&signals [w->signum - 1].head, (WL)w);
		2056	ev_stop (EV_A_ (W)w);
		2057
		2058	if (!signals [w->signum - 1].head)
		2059	signal (w->signum, SIG_DFL);
		2060	}
		2061
		2062	void
		2063	ev_child_start (EV_P_ ev_child *w)
		2064	{
		2065	#if EV_MULTIPLICITY
		2066	assert (("child watchers are only supported in the default loop", loop == ev_default_loop_ptr));
		2067	#endif
		2068	if (expect_false (ev_is_active (w)))
		2069	return;
		2070
		2071	ev_start (EV_A_ (W)w, 1);
		2072	wlist_add (&childs [w->pid & (EV_PID_HASHSIZE - 1)], (WL)w);
		2073	}
		2074
		2075	void
		2076	ev_child_stop (EV_P_ ev_child *w)
		2077	{
		2078	clear_pending (EV_A_ (W)w);
		2079	if (expect_false (!ev_is_active (w)))
		2080	return;
		2081
		2082	wlist_del (&childs [w->pid & (EV_PID_HASHSIZE - 1)], (WL)w);
		2083	ev_stop (EV_A_ (W)w);
		2084	}
		2085
		2086	#if EV_STAT_ENABLE
		2087
		2088	# ifdef _WIN32
		2089	# undef lstat
		2090	# define lstat(a,b) _stati64 (a,b)
		2091	# endif
		2092
		2093	#define DEF_STAT_INTERVAL 5.0074891
		2094	#define MIN_STAT_INTERVAL 0.1074891
		2095
		2096	static void noinline stat_timer_cb (EV_P_ ev_timer *w_, int revents);
		2097
		2098	#if EV_USE_INOTIFY
		2099	# define EV_INOTIFY_BUFSIZE 8192
		2100
		2101	static void noinline
		2102	infy_add (EV_P_ ev_stat *w)
		2103	{
		2104	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);
		2105
		2106	if (w->wd < 0)
		2107	{
		2108	ev_timer_start (EV_A_ &w->timer); /* this is not race-free, so we still need to recheck periodically */
		2109
		2110	/* monitor some parent directory for speedup hints */
		2111	if ((errno == ENOENT || errno == EACCES) && strlen (w->path) < 4096)
		2112	{
		2113	char path [4096];
		2114	strcpy (path, w->path);
		2115
		2116	do
		2117	{
		2118	int mask = IN_MASK_ADD | IN_DELETE_SELF | IN_MOVE_SELF
		2119	| (errno == EACCES ? IN_ATTRIB : IN_CREATE | IN_MOVED_TO);
		2120
		2121	char *pend = strrchr (path, '/');
		2122
		2123	if (!pend)
		2124	break; /* whoops, no '/', complain to your admin */
		2125
		2126	*pend = 0;
		2127	w->wd = inotify_add_watch (fs_fd, path, mask);
		2128	}
		2129	while (w->wd < 0 && (errno == ENOENT || errno == EACCES));
		2130	}
		2131	}
		2132	else
		2133	ev_timer_stop (EV_A_ &w->timer); /* we can watch this in a race-free way */
		2134
		2135	if (w->wd >= 0)
		2136	wlist_add (&fs_hash [w->wd & (EV_INOTIFY_HASHSIZE - 1)].head, (WL)w);
		2137	}
		2138
		2139	static void noinline
		2140	infy_del (EV_P_ ev_stat *w)
		2141	{
		2142	int slot;
		2143	int wd = w->wd;
		2144
		2145	if (wd < 0)
		2146	return;
		2147
		2148	w->wd = -2;
		2149	slot = wd & (EV_INOTIFY_HASHSIZE - 1);
		2150	wlist_del (&fs_hash [slot].head, (WL)w);
		2151
		2152	/* remove this watcher, if others are watching it, they will rearm */
		2153	inotify_rm_watch (fs_fd, wd);
		2154	}
		2155
		2156	static void noinline
		2157	infy_wd (EV_P_ int slot, int wd, struct inotify_event *ev)
		2158	{
		2159	if (slot < 0)
		2160	/* overflow, need to check for all hahs slots */
		2161	for (slot = 0; slot < EV_INOTIFY_HASHSIZE; ++slot)
		2162	infy_wd (EV_A_ slot, wd, ev);
		2163	else
		2164	{
		2165	WL w_;
		2166
		2167	for (w_ = fs_hash [slot & (EV_INOTIFY_HASHSIZE - 1)].head; w_; )
		2168	{
		2169	ev_stat *w = (ev_stat *)w_;
		2170	w_ = w_->next; /* lets us remove this watcher and all before it */
		2171
		2172	if (w->wd == wd || wd == -1)
		2173	{
		2174	if (ev->mask & (IN_IGNORED | IN_UNMOUNT | IN_DELETE_SELF))
		2175	{
		2176	w->wd = -1;
		2177	infy_add (EV_A_ w); /* re-add, no matter what */
		2178	}
		2179
		2180	stat_timer_cb (EV_A_ &w->timer, 0);
		2181	}
		2182	}
		2183	}
		2184	}
		2185
		2186	static void
		2187	infy_cb (EV_P_ ev_io *w, int revents)
		2188	{
		2189	char buf [EV_INOTIFY_BUFSIZE];
		2190	struct inotify_event *ev = (struct inotify_event *)buf;
		2191	int ofs;
		2192	int len = read (fs_fd, buf, sizeof (buf));
		2193
		2194	for (ofs = 0; ofs < len; ofs += sizeof (struct inotify_event) + ev->len)
		2195	infy_wd (EV_A_ ev->wd, ev->wd, ev);
		2196	}
		2197
		2198	void inline_size
		2199	infy_init (EV_P)
		2200	{
		2201	if (fs_fd != -2)
		2202	return;
		2203
		2204	fs_fd = inotify_init ();
		2205
		2206	if (fs_fd >= 0)
		2207	{
		2208	ev_io_init (&fs_w, infy_cb, fs_fd, EV_READ);
		2209	ev_set_priority (&fs_w, EV_MAXPRI);
		2210	ev_io_start (EV_A_ &fs_w);
		2211	}
		2212	}
		2213
		2214	void inline_size
		2215	infy_fork (EV_P)
		2216	{
		2217	int slot;
		2218
		2219	if (fs_fd < 0)
		2220	return;
		2221
		2222	close (fs_fd);
		2223	fs_fd = inotify_init ();
		2224
		2225	for (slot = 0; slot < EV_INOTIFY_HASHSIZE; ++slot)
		2226	{
		2227	WL w_ = fs_hash [slot].head;
		2228	fs_hash [slot].head = 0;
		2229
		2230	while (w_)
		2231	{
		2232	ev_stat *w = (ev_stat *)w_;
		2233	w_ = w_->next; /* lets us add this watcher */
		2234
		2235	w->wd = -1;
		2236
		2237	if (fs_fd >= 0)
		2238	infy_add (EV_A_ w); /* re-add, no matter what */
		2239	else
		2240	ev_timer_start (EV_A_ &w->timer);
		2241	}
		2242
		2243	}
		2244	}
		2245
		2246	#endif
		2247
		2248	void
		2249	ev_stat_stat (EV_P_ ev_stat *w)
		2250	{
		2251	if (lstat (w->path, &w->attr) < 0)
		2252	w->attr.st_nlink = 0;
		2253	else if (!w->attr.st_nlink)
		2254	w->attr.st_nlink = 1;
		2255	}
		2256
		2257	static void noinline
		2258	stat_timer_cb (EV_P_ ev_timer *w_, int revents)
		2259	{
		2260	ev_stat *w = (ev_stat *)(((char *)w_) - offsetof (ev_stat, timer));
		2261
		2262	/* we copy this here each the time so that */
		2263	/* prev has the old value when the callback gets invoked */
		2264	w->prev = w->attr;
		2265	ev_stat_stat (EV_A_ w);
		2266
		2267	/* memcmp doesn't work on netbsd, they.... do stuff to their struct stat */
		2268	if (
		2269	w->prev.st_dev != w->attr.st_dev
		2270	|| w->prev.st_ino != w->attr.st_ino
		2271	|| w->prev.st_mode != w->attr.st_mode
		2272	|| w->prev.st_nlink != w->attr.st_nlink
		2273	|| w->prev.st_uid != w->attr.st_uid
		2274	|| w->prev.st_gid != w->attr.st_gid
		2275	|| w->prev.st_rdev != w->attr.st_rdev
		2276	|| w->prev.st_size != w->attr.st_size
		2277	|| w->prev.st_atime != w->attr.st_atime
		2278	|| w->prev.st_mtime != w->attr.st_mtime
		2279	|| w->prev.st_ctime != w->attr.st_ctime
		2280	) {
		2281	#if EV_USE_INOTIFY
		2282	infy_del (EV_A_ w);
		2283	infy_add (EV_A_ w);
		2284	ev_stat_stat (EV_A_ w); /* avoid race... */
		2285	#endif
		2286
		2287	ev_feed_event (EV_A_ w, EV_STAT);
		2288	}
		2289	}
		2290
		2291	void
		2292	ev_stat_start (EV_P_ ev_stat *w)
		2293	{
		2294	if (expect_false (ev_is_active (w)))
		2295	return;
		2296
		2297	/* since we use memcmp, we need to clear any padding data etc. */
		2298	memset (&w->prev, 0, sizeof (ev_statdata));
		2299	memset (&w->attr, 0, sizeof (ev_statdata));
		2300
		2301	ev_stat_stat (EV_A_ w);
		2302
		2303	if (w->interval < MIN_STAT_INTERVAL)
		2304	w->interval = w->interval ? MIN_STAT_INTERVAL : DEF_STAT_INTERVAL;
		2305
		2306	ev_timer_init (&w->timer, stat_timer_cb, w->interval, w->interval);
		2307	ev_set_priority (&w->timer, ev_priority (w));
		2308
		2309	#if EV_USE_INOTIFY
		2310	infy_init (EV_A);
		2311
		2312	if (fs_fd >= 0)
		2313	infy_add (EV_A_ w);
		2314	else
		2315	#endif
		2316	ev_timer_start (EV_A_ &w->timer);
		2317
		2318	ev_start (EV_A_ (W)w, 1);
		2319	}
		2320
		2321	void
		2322	ev_stat_stop (EV_P_ ev_stat *w)
		2323	{
		2324	clear_pending (EV_A_ (W)w);
		2325	if (expect_false (!ev_is_active (w)))
		2326	return;
		2327
		2328	#if EV_USE_INOTIFY
		2329	infy_del (EV_A_ w);
		2330	#endif
		2331	ev_timer_stop (EV_A_ &w->timer);
		2332
		2333	ev_stop (EV_A_ (W)w);
		2334	}
		2335	#endif
		2336
		2337	#if EV_IDLE_ENABLE
1557	void	2338	void
1558	ev_idle_start (EV_P_ ev_idle *w)	2339	ev_idle_start (EV_P_ ev_idle *w)
1559	{	2340	{
1560	if (expect_false (ev_is_active (w)))	2341	if (expect_false (ev_is_active (w)))
1561	return;	2342	return;
1562		2343
		2344	pri_adjust (EV_A_ (W)w);
		2345
		2346	{
		2347	int active = ++idlecnt [ABSPRI (w)];
		2348
		2349	++idleall;
1563	ev_start (EV_A_ (W)w, ++idlecnt);	2350	ev_start (EV_A_ (W)w, active);
		2351
1564	array_needsize (ev_idle *, idles, idlemax, idlecnt, EMPTY2);	2352	array_needsize (ev_idle *, idles [ABSPRI (w)], idlemax [ABSPRI (w)], active, EMPTY2);
1565	idles [idlecnt - 1] = w;	2353	idles [ABSPRI (w)][active - 1] = w;
		2354	}
1566	}	2355	}
1567		2356
1568	void	2357	void
1569	ev_idle_stop (EV_P_ ev_idle *w)	2358	ev_idle_stop (EV_P_ ev_idle *w)
1570	{	2359	{
1571	ev_clear_pending (EV_A_ (W)w);	2360	clear_pending (EV_A_ (W)w);
1572	if (expect_false (!ev_is_active (w)))	2361	if (expect_false (!ev_is_active (w)))
1573	return;	2362	return;
1574		2363
1575	{	2364	{
1576	int active = ((W)w)->active;	2365	int active = ((W)w)->active;
1577	idles [active - 1] = idles [--idlecnt];	2366
		2367	idles [ABSPRI (w)][active - 1] = idles [ABSPRI (w)][--idlecnt [ABSPRI (w)]];
1578	((W)idles [active - 1])->active = active;	2368	((W)idles [ABSPRI (w)][active - 1])->active = active;
		2369
		2370	ev_stop (EV_A_ (W)w);
		2371	--idleall;
1579	}	2372	}
1580
1581	ev_stop (EV_A_ (W)w);
1582	}	2373	}
		2374	#endif
1583		2375
1584	void	2376	void
1585	ev_prepare_start (EV_P_ ev_prepare *w)	2377	ev_prepare_start (EV_P_ ev_prepare *w)
1586	{	2378	{
1587	if (expect_false (ev_is_active (w)))	2379	if (expect_false (ev_is_active (w)))
…		…
1593	}	2385	}
1594		2386
1595	void	2387	void
1596	ev_prepare_stop (EV_P_ ev_prepare *w)	2388	ev_prepare_stop (EV_P_ ev_prepare *w)
1597	{	2389	{
1598	ev_clear_pending (EV_A_ (W)w);	2390	clear_pending (EV_A_ (W)w);
1599	if (expect_false (!ev_is_active (w)))	2391	if (expect_false (!ev_is_active (w)))
1600	return;	2392	return;
1601		2393
1602	{	2394	{
1603	int active = ((W)w)->active;	2395	int active = ((W)w)->active;
…		…
1620	}	2412	}
1621		2413
1622	void	2414	void
1623	ev_check_stop (EV_P_ ev_check *w)	2415	ev_check_stop (EV_P_ ev_check *w)
1624	{	2416	{
1625	ev_clear_pending (EV_A_ (W)w);	2417	clear_pending (EV_A_ (W)w);
1626	if (expect_false (!ev_is_active (w)))	2418	if (expect_false (!ev_is_active (w)))
1627	return;	2419	return;
1628		2420
1629	{	2421	{
1630	int active = ((W)w)->active;	2422	int active = ((W)w)->active;
…		…
1633	}	2425	}
1634		2426
1635	ev_stop (EV_A_ (W)w);	2427	ev_stop (EV_A_ (W)w);
1636	}	2428	}
1637		2429
1638	#ifndef SA_RESTART
1639	# define SA_RESTART 0
1640	#endif
1641
1642	void
1643	ev_signal_start (EV_P_ ev_signal *w)
1644	{
1645	#if EV_MULTIPLICITY
1646	assert (("signal watchers are only supported in the default loop", loop == ev_default_loop_ptr));
1647	#endif
1648	if (expect_false (ev_is_active (w)))
1649	return;
1650
1651	assert (("ev_signal_start called with illegal signal number", w->signum > 0));
1652
1653	ev_start (EV_A_ (W)w, 1);
1654	array_needsize (ANSIG, signals, signalmax, w->signum, signals_init);
1655	wlist_add ((WL *)&signals [w->signum - 1].head, (WL)w);
1656
1657	if (!((WL)w)->next)
1658	{
1659	#if _WIN32
1660	signal (w->signum, sighandler);
1661	#else
1662	struct sigaction sa;
1663	sa.sa_handler = sighandler;
1664	sigfillset (&sa.sa_mask);
1665	sa.sa_flags = SA_RESTART; /* if restarting works we save one iteration */
1666	sigaction (w->signum, &sa, 0);
1667	#endif
1668	}
1669	}
1670
1671	void
1672	ev_signal_stop (EV_P_ ev_signal *w)
1673	{
1674	ev_clear_pending (EV_A_ (W)w);
1675	if (expect_false (!ev_is_active (w)))
1676	return;
1677
1678	wlist_del ((WL *)&signals [w->signum - 1].head, (WL)w);
1679	ev_stop (EV_A_ (W)w);
1680
1681	if (!signals [w->signum - 1].head)
1682	signal (w->signum, SIG_DFL);
1683	}
1684
1685	void
1686	ev_child_start (EV_P_ ev_child *w)
1687	{
1688	#if EV_MULTIPLICITY
1689	assert (("child watchers are only supported in the default loop", loop == ev_default_loop_ptr));
1690	#endif
1691	if (expect_false (ev_is_active (w)))
1692	return;
1693
1694	ev_start (EV_A_ (W)w, 1);
1695	wlist_add ((WL *)&childs [w->pid & (PID_HASHSIZE - 1)], (WL)w);
1696	}
1697
1698	void
1699	ev_child_stop (EV_P_ ev_child *w)
1700	{
1701	ev_clear_pending (EV_A_ (W)w);
1702	if (expect_false (!ev_is_active (w)))
1703	return;
1704
1705	wlist_del ((WL *)&childs [w->pid & (PID_HASHSIZE - 1)], (WL)w);
1706	ev_stop (EV_A_ (W)w);
1707	}
1708
1709	#if EV_EMBED_ENABLE	2430	#if EV_EMBED_ENABLE
1710	void noinline	2431	void noinline
1711	ev_embed_sweep (EV_P_ ev_embed *w)	2432	ev_embed_sweep (EV_P_ ev_embed *w)
1712	{	2433	{
1713	ev_loop (w->loop, EVLOOP_NONBLOCK);	2434	ev_loop (w->other, EVLOOP_NONBLOCK);
1714	}	2435	}
1715		2436
1716	static void	2437	static void
1717	embed_cb (EV_P_ ev_io *io, int revents)	2438	embed_io_cb (EV_P_ ev_io *io, int revents)
1718	{	2439	{
1719	ev_embed *w = (ev_embed *)(((char *)io) - offsetof (ev_embed, io));	2440	ev_embed *w = (ev_embed *)(((char *)io) - offsetof (ev_embed, io));
1720		2441
1721	if (ev_cb (w))	2442	if (ev_cb (w))
1722	ev_feed_event (EV_A_ (W)w, EV_EMBED);	2443	ev_feed_event (EV_A_ (W)w, EV_EMBED);
1723	else	2444	else
1724	ev_embed_sweep (loop, w);	2445	ev_loop (w->other, EVLOOP_NONBLOCK);
1725	}	2446	}
		2447
		2448	static void
		2449	embed_prepare_cb (EV_P_ ev_prepare *prepare, int revents)
		2450	{
		2451	ev_embed *w = (ev_embed *)(((char *)prepare) - offsetof (ev_embed, prepare));
		2452
		2453	{
		2454	struct ev_loop *loop = w->other;
		2455
		2456	while (fdchangecnt)
		2457	{
		2458	fd_reify (EV_A);
		2459	ev_loop (EV_A_ EVLOOP_NONBLOCK);
		2460	}
		2461	}
		2462	}
		2463
		2464	#if 0
		2465	static void
		2466	embed_idle_cb (EV_P_ ev_idle *idle, int revents)
		2467	{
		2468	ev_idle_stop (EV_A_ idle);
		2469	}
		2470	#endif
1726		2471
1727	void	2472	void
1728	ev_embed_start (EV_P_ ev_embed *w)	2473	ev_embed_start (EV_P_ ev_embed *w)
1729	{	2474	{
1730	if (expect_false (ev_is_active (w)))	2475	if (expect_false (ev_is_active (w)))
1731	return;	2476	return;
1732		2477
1733	{	2478	{
1734	struct ev_loop *loop = w->loop;	2479	struct ev_loop *loop = w->other;
1735	assert (("loop to be embedded is not embeddable", backend & ev_embeddable_backends ()));	2480	assert (("loop to be embedded is not embeddable", backend & ev_embeddable_backends ()));
1736	ev_io_init (&w->io, embed_cb, backend_fd, EV_READ);	2481	ev_io_init (&w->io, embed_io_cb, backend_fd, EV_READ);
1737	}	2482	}
1738		2483
1739	ev_set_priority (&w->io, ev_priority (w));	2484	ev_set_priority (&w->io, ev_priority (w));
1740	ev_io_start (EV_A_ &w->io);	2485	ev_io_start (EV_A_ &w->io);
1741		2486
		2487	ev_prepare_init (&w->prepare, embed_prepare_cb);
		2488	ev_set_priority (&w->prepare, EV_MINPRI);
		2489	ev_prepare_start (EV_A_ &w->prepare);
		2490
		2491	/*ev_idle_init (&w->idle, e,bed_idle_cb);*/
		2492
1742	ev_start (EV_A_ (W)w, 1);	2493	ev_start (EV_A_ (W)w, 1);
1743	}	2494	}
1744		2495
1745	void	2496	void
1746	ev_embed_stop (EV_P_ ev_embed *w)	2497	ev_embed_stop (EV_P_ ev_embed *w)
1747	{	2498	{
1748	ev_clear_pending (EV_A_ (W)w);	2499	clear_pending (EV_A_ (W)w);
1749	if (expect_false (!ev_is_active (w)))	2500	if (expect_false (!ev_is_active (w)))
1750	return;	2501	return;
1751		2502
1752	ev_io_stop (EV_A_ &w->io);	2503	ev_io_stop (EV_A_ &w->io);
		2504	ev_prepare_stop (EV_A_ &w->prepare);
1753		2505
1754	ev_stop (EV_A_ (W)w);	2506	ev_stop (EV_A_ (W)w);
1755	}	2507	}
1756	#endif	2508	#endif
1757		2509
1758	#if EV_STAT_ENABLE	2510	#if EV_FORK_ENABLE
1759
1760	# ifdef _WIN32
1761	# define lstat(a,b) stat(a,b)
1762	# endif
1763
1764	void	2511	void
1765	ev_stat_stat (EV_P_ ev_stat *w)
1766	{
1767	if (lstat (w->path, &w->attr) < 0)
1768	w->attr.st_nlink = 0;
1769	else if (!w->attr.st_nlink)
1770	w->attr.st_nlink = 1;
1771	}
1772
1773	static void
1774	stat_timer_cb (EV_P_ ev_timer *w_, int revents)
1775	{
1776	ev_stat *w = (ev_stat *)(((char *)w_) - offsetof (ev_stat, timer));
1777
1778	/* we copy this here each the time so that */
1779	/* prev has the old value when the callback gets invoked */
1780	w->prev = w->attr;
1781	ev_stat_stat (EV_A_ w);
1782
1783	if (memcmp (&w->prev, &w->attr, sizeof (ev_statdata)))
1784	ev_feed_event (EV_A_ w, EV_STAT);
1785	}
1786
1787	void
1788	ev_stat_start (EV_P_ ev_stat *w)	2512	ev_fork_start (EV_P_ ev_fork *w)
1789	{	2513	{
1790	if (expect_false (ev_is_active (w)))	2514	if (expect_false (ev_is_active (w)))
1791	return;	2515	return;
1792		2516
1793	/* since we use memcmp, we need to clear any padding data etc. */
1794	memset (&w->prev, 0, sizeof (ev_statdata));
1795	memset (&w->attr, 0, sizeof (ev_statdata));
1796
1797	ev_stat_stat (EV_A_ w);
1798
1799	ev_timer_init (&w->timer, stat_timer_cb, w->interval, w->interval);
1800	ev_set_priority (&w->timer, ev_priority (w));
1801	ev_timer_start (EV_A_ &w->timer);
1802
1803	ev_start (EV_A_ (W)w, 1);	2517	ev_start (EV_A_ (W)w, ++forkcnt);
		2518	array_needsize (ev_fork *, forks, forkmax, forkcnt, EMPTY2);
		2519	forks [forkcnt - 1] = w;
1804	}	2520	}
1805		2521
1806	void	2522	void
1807	ev_stat_stop (EV_P_ ev_stat *w)	2523	ev_fork_stop (EV_P_ ev_fork *w)
1808	{	2524	{
1809	ev_clear_pending (EV_A_ (W)w);	2525	clear_pending (EV_A_ (W)w);
1810	if (expect_false (!ev_is_active (w)))	2526	if (expect_false (!ev_is_active (w)))
1811	return;	2527	return;
1812		2528
1813	ev_timer_stop (EV_A_ &w->timer);	2529	{
		2530	int active = ((W)w)->active;
		2531	forks [active - 1] = forks [--forkcnt];
		2532	((W)forks [active - 1])->active = active;
		2533	}
1814		2534
1815	ev_stop (EV_A_ (W)w);	2535	ev_stop (EV_A_ (W)w);
		2536	}
		2537	#endif
		2538
		2539	#if EV_ASYNC_ENABLE
		2540	void
		2541	ev_async_start (EV_P_ ev_async *w)
		2542	{
		2543	if (expect_false (ev_is_active (w)))
		2544	return;
		2545
		2546	evpipe_init (EV_A);
		2547
		2548	ev_start (EV_A_ (W)w, ++asynccnt);
		2549	array_needsize (ev_async *, asyncs, asyncmax, asynccnt, EMPTY2);
		2550	asyncs [asynccnt - 1] = w;
		2551	}
		2552
		2553	void
		2554	ev_async_stop (EV_P_ ev_async *w)
		2555	{
		2556	clear_pending (EV_A_ (W)w);
		2557	if (expect_false (!ev_is_active (w)))
		2558	return;
		2559
		2560	{
		2561	int active = ((W)w)->active;
		2562	asyncs [active - 1] = asyncs [--asynccnt];
		2563	((W)asyncs [active - 1])->active = active;
		2564	}
		2565
		2566	ev_stop (EV_A_ (W)w);
		2567	}
		2568
		2569	void
		2570	ev_async_send (EV_P_ ev_async *w)
		2571	{
		2572	w->sent = 1;
		2573	evpipe_write (EV_A_ &gotasync);
1816	}	2574	}
1817	#endif	2575	#endif
1818		2576
1819	/*****************************************************************************/	2577	/*****************************************************************************/
1820		2578
…		…
1878	ev_timer_set (&once->to, timeout, 0.);	2636	ev_timer_set (&once->to, timeout, 0.);
1879	ev_timer_start (EV_A_ &once->to);	2637	ev_timer_start (EV_A_ &once->to);
1880	}	2638	}
1881	}	2639	}
1882		2640
		2641	#if EV_MULTIPLICITY
		2642	#include "ev_wrap.h"
		2643	#endif
		2644
1883	#ifdef __cplusplus	2645	#ifdef __cplusplus
1884	}	2646	}
1885	#endif	2647	#endif
1886		2648

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