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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 1.228 by root, Fri May 2 08:07:37 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	#define ev_at(w) ((WT)(w))->at
		331
		332	#if EV_USE_MONOTONIC
		333	/* sig_atomic_t is used to avoid per-thread variables or locking but still */
		334	/* giving it a reasonably high chance of working on typical architetcures */
220	static int have_monotonic; /* did clock_gettime (CLOCK_MONOTONIC) work? */	335	static EV_ATOMIC_T have_monotonic; /* did clock_gettime (CLOCK_MONOTONIC) work? */
		336	#endif
221		337
222	#ifdef _WIN32	338	#ifdef _WIN32
223	# include "ev_win32.c"	339	# include "ev_win32.c"
224	#endif	340	#endif
225		341
226	/*****************************************************************************/	342	/*****************************************************************************/
227		343
228	static void (*syserr_cb)(const char *msg);	344	static void (*syserr_cb)(const char *msg);
229		345
		346	void
230	void ev_set_syserr_cb (void (*cb)(const char *msg))	347	ev_set_syserr_cb (void (*cb)(const char *msg))
231	{	348	{
232	syserr_cb = cb;	349	syserr_cb = cb;
233	}	350	}
234		351
235	static void	352	static void noinline
236	syserr (const char *msg)	353	syserr (const char *msg)
237	{	354	{
238	if (!msg)	355	if (!msg)
239	msg = "(libev) system error";	356	msg = "(libev) system error";
240		357
…		…
245	perror (msg);	362	perror (msg);
246	abort ();	363	abort ();
247	}	364	}
248	}	365	}
249		366
		367	static void *
		368	ev_realloc_emul (void *ptr, long size)
		369	{
		370	/* some systems, notably openbsd and darwin, fail to properly
		371	* implement realloc (x, 0) (as required by both ansi c-98 and
		372	* the single unix specification, so work around them here.
		373	*/
		374
		375	if (size)
		376	return realloc (ptr, size);
		377
		378	free (ptr);
		379	return 0;
		380	}
		381
250	static void *(*alloc)(void *ptr, long size);	382	static void *(*alloc)(void *ptr, long size) = ev_realloc_emul;
251		383
		384	void
252	void ev_set_allocator (void *(*cb)(void *ptr, long size))	385	ev_set_allocator (void *(*cb)(void *ptr, long size))
253	{	386	{
254	alloc = cb;	387	alloc = cb;
255	}	388	}
256		389
257	static void *	390	inline_speed void *
258	ev_realloc (void *ptr, long size)	391	ev_realloc (void *ptr, long size)
259	{	392	{
260	ptr = alloc ? alloc (ptr, size) : realloc (ptr, size);	393	ptr = alloc (ptr, size);
261		394
262	if (!ptr && size)	395	if (!ptr && size)
263	{	396	{
264	fprintf (stderr, "libev: cannot allocate %ld bytes, aborting.", size);	397	fprintf (stderr, "libev: cannot allocate %ld bytes, aborting.", size);
265	abort ();	398	abort ();
…		…
286	typedef struct	419	typedef struct
287	{	420	{
288	W w;	421	W w;
289	int events;	422	int events;
290	} ANPENDING;	423	} ANPENDING;
		424
		425	#if EV_USE_INOTIFY
		426	typedef struct
		427	{
		428	WL head;
		429	} ANFS;
		430	#endif
291		431
292	#if EV_MULTIPLICITY	432	#if EV_MULTIPLICITY
293		433
294	struct ev_loop	434	struct ev_loop
295	{	435	{
…		…
315		455
316	#endif	456	#endif
317		457
318	/*****************************************************************************/	458	/*****************************************************************************/
319		459
320	ev_tstamp noinline	460	ev_tstamp
321	ev_time (void)	461	ev_time (void)
322	{	462	{
323	#if EV_USE_REALTIME	463	#if EV_USE_REALTIME
324	struct timespec ts;	464	struct timespec ts;
325	clock_gettime (CLOCK_REALTIME, &ts);	465	clock_gettime (CLOCK_REALTIME, &ts);
…		…
352	{	492	{
353	return ev_rt_now;	493	return ev_rt_now;
354	}	494	}
355	#endif	495	#endif
356		496
357	#define array_roundsize(type,n) (((n) | 4) & ~3)	497	void
		498	ev_sleep (ev_tstamp delay)
		499	{
		500	if (delay > 0.)
		501	{
		502	#if EV_USE_NANOSLEEP
		503	struct timespec ts;
		504
		505	ts.tv_sec = (time_t)delay;
		506	ts.tv_nsec = (long)((delay - (ev_tstamp)(ts.tv_sec)) * 1e9);
		507
		508	nanosleep (&ts, 0);
		509	#elif defined(_WIN32)
		510	Sleep ((unsigned long)(delay * 1e3));
		511	#else
		512	struct timeval tv;
		513
		514	tv.tv_sec = (time_t)delay;
		515	tv.tv_usec = (long)((delay - (ev_tstamp)(tv.tv_sec)) * 1e6);
		516
		517	select (0, 0, 0, 0, &tv);
		518	#endif
		519	}
		520	}
		521
		522	/*****************************************************************************/
		523
		524	int inline_size
		525	array_nextsize (int elem, int cur, int cnt)
		526	{
		527	int ncur = cur + 1;
		528
		529	do
		530	ncur <<= 1;
		531	while (cnt > ncur);
		532
		533	/* if size > 4096, round to 4096 - 4 * longs to accomodate malloc overhead */
		534	if (elem * ncur > 4096)
		535	{
		536	ncur *= elem;
		537	ncur = (ncur + elem + 4095 + sizeof (void *) * 4) & ~4095;
		538	ncur = ncur - sizeof (void *) * 4;
		539	ncur /= elem;
		540	}
		541
		542	return ncur;
		543	}
		544
		545	static noinline void *
		546	array_realloc (int elem, void *base, int *cur, int cnt)
		547	{
		548	*cur = array_nextsize (elem, *cur, cnt);
		549	return ev_realloc (base, elem * *cur);
		550	}
358		551
359	#define array_needsize(type,base,cur,cnt,init) \	552	#define array_needsize(type,base,cur,cnt,init) \
360	if (expect_false ((cnt) > cur)) \	553	if (expect_false ((cnt) > (cur))) \
361	{ \	554	{ \
362	int newcnt = cur; \	555	int ocur_ = (cur); \
363	do \	556	(base) = (type *)array_realloc \
364	{ \	557	(sizeof (type), (base), &(cur), (cnt)); \
365	newcnt = array_roundsize (type, newcnt << 1); \	558	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	}	559	}
373		560
		561	#if 0
374	#define array_slim(type,stem) \	562	#define array_slim(type,stem) \
375	if (stem ## max < array_roundsize (stem ## cnt >> 2)) \	563	if (stem ## max < array_roundsize (stem ## cnt >> 2)) \
376	{ \	564	{ \
377	stem ## max = array_roundsize (stem ## cnt >> 1); \	565	stem ## max = array_roundsize (stem ## cnt >> 1); \
378	base = (type *)ev_realloc (base, sizeof (type) * (stem ## max));\	566	base = (type *)ev_realloc (base, sizeof (type) * (stem ## max));\
379	fprintf (stderr, "slimmed down " # stem " to %d\n", stem ## max);/*D*/\	567	fprintf (stderr, "slimmed down " # stem " to %d\n", stem ## max);/*D*/\
380	}	568	}
		569	#endif
381		570
382	#define array_free(stem, idx) \	571	#define array_free(stem, idx) \
383	ev_free (stem ## s idx); stem ## cnt idx = stem ## max idx = 0;	572	ev_free (stem ## s idx); stem ## cnt idx = stem ## max idx = 0;
		573
		574	/*****************************************************************************/
		575
		576	void noinline
		577	ev_feed_event (EV_P_ void *w, int revents)
		578	{
		579	W w_ = (W)w;
		580	int pri = ABSPRI (w_);
		581
		582	if (expect_false (w_->pending))
		583	pendings [pri][w_->pending - 1].events |= revents;
		584	else
		585	{
		586	w_->pending = ++pendingcnt [pri];
		587	array_needsize (ANPENDING, pendings [pri], pendingmax [pri], w_->pending, EMPTY2);
		588	pendings [pri][w_->pending - 1].w = w_;
		589	pendings [pri][w_->pending - 1].events = revents;
		590	}
		591	}
		592
		593	void inline_speed
		594	queue_events (EV_P_ W *events, int eventcnt, int type)
		595	{
		596	int i;
		597
		598	for (i = 0; i < eventcnt; ++i)
		599	ev_feed_event (EV_A_ events [i], type);
		600	}
384		601
385	/*****************************************************************************/	602	/*****************************************************************************/
386		603
387	void inline_size	604	void inline_size
388	anfds_init (ANFD *base, int count)	605	anfds_init (ANFD *base, int count)
…		…
395		612
396	++base;	613	++base;
397	}	614	}
398	}	615	}
399		616
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	617	void inline_speed
427	fd_event (EV_P_ int fd, int revents)	618	fd_event (EV_P_ int fd, int revents)
428	{	619	{
429	ANFD *anfd = anfds + fd;	620	ANFD *anfd = anfds + fd;
430	ev_io *w;	621	ev_io *w;
…		…
439	}	630	}
440		631
441	void	632	void
442	ev_feed_fd_event (EV_P_ int fd, int revents)	633	ev_feed_fd_event (EV_P_ int fd, int revents)
443	{	634	{
		635	if (fd >= 0 && fd < anfdmax)
444	fd_event (EV_A_ fd, revents);	636	fd_event (EV_A_ fd, revents);
445	}	637	}
446
447	/*****************************************************************************/
448		638
449	void inline_size	639	void inline_size
450	fd_reify (EV_P)	640	fd_reify (EV_P)
451	{	641	{
452	int i;	642	int i;
…		…
455	{	645	{
456	int fd = fdchanges [i];	646	int fd = fdchanges [i];
457	ANFD *anfd = anfds + fd;	647	ANFD *anfd = anfds + fd;
458	ev_io *w;	648	ev_io *w;
459		649
460	int events = 0;	650	unsigned char events = 0;
461		651
462	for (w = (ev_io *)anfd->head; w; w = (ev_io *)((WL)w)->next)	652	for (w = (ev_io *)anfd->head; w; w = (ev_io *)((WL)w)->next)
463	events |= w->events;	653	events |= (unsigned char)w->events;
464		654
465	#if EV_SELECT_IS_WINSOCKET	655	#if EV_SELECT_IS_WINSOCKET
466	if (events)	656	if (events)
467	{	657	{
468	unsigned long argp;	658	unsigned long argp;
		659	#ifdef EV_FD_TO_WIN32_HANDLE
		660	anfd->handle = EV_FD_TO_WIN32_HANDLE (fd);
		661	#else
469	anfd->handle = _get_osfhandle (fd);	662	anfd->handle = _get_osfhandle (fd);
		663	#endif
470	assert (("libev only supports socket fds in this configuration", ioctlsocket (anfd->handle, FIONREAD, &argp) == 0));	664	assert (("libev only supports socket fds in this configuration", ioctlsocket (anfd->handle, FIONREAD, &argp) == 0));
471	}	665	}
472	#endif	666	#endif
473		667
		668	{
		669	unsigned char o_events = anfd->events;
		670	unsigned char o_reify = anfd->reify;
		671
474	anfd->reify = 0;	672	anfd->reify = 0;
475
476	backend_modify (EV_A_ fd, anfd->events, events);
477	anfd->events = events;	673	anfd->events = events;
		674
		675	if (o_events != events || o_reify & EV_IOFDSET)
		676	backend_modify (EV_A_ fd, o_events, events);
		677	}
478	}	678	}
479		679
480	fdchangecnt = 0;	680	fdchangecnt = 0;
481	}	681	}
482		682
483	void inline_size	683	void inline_size
484	fd_change (EV_P_ int fd)	684	fd_change (EV_P_ int fd, int flags)
485	{	685	{
486	if (expect_false (anfds [fd].reify))	686	unsigned char reify = anfds [fd].reify;
487	return;
488
489	anfds [fd].reify = 1;	687	anfds [fd].reify |= flags;
490		688
		689	if (expect_true (!reify))
		690	{
491	++fdchangecnt;	691	++fdchangecnt;
492	array_needsize (int, fdchanges, fdchangemax, fdchangecnt, EMPTY2);	692	array_needsize (int, fdchanges, fdchangemax, fdchangecnt, EMPTY2);
493	fdchanges [fdchangecnt - 1] = fd;	693	fdchanges [fdchangecnt - 1] = fd;
		694	}
494	}	695	}
495		696
496	void inline_speed	697	void inline_speed
497	fd_kill (EV_P_ int fd)	698	fd_kill (EV_P_ int fd)
498	{	699	{
…		…
545	static void noinline	746	static void noinline
546	fd_rearm_all (EV_P)	747	fd_rearm_all (EV_P)
547	{	748	{
548	int fd;	749	int fd;
549		750
550	/* this should be highly optimised to not do anything but set a flag */
551	for (fd = 0; fd < anfdmax; ++fd)	751	for (fd = 0; fd < anfdmax; ++fd)
552	if (anfds [fd].events)	752	if (anfds [fd].events)
553	{	753	{
554	anfds [fd].events = 0;	754	anfds [fd].events = 0;
555	fd_change (EV_A_ fd);	755	fd_change (EV_A_ fd, EV_IOFDSET | 1);
556	}	756	}
557	}	757	}
558		758
559	/*****************************************************************************/	759	/*****************************************************************************/
560		760
		761	/* towards the root */
561	void inline_speed	762	void inline_speed
562	upheap (WT *heap, int k)	763	upheap (WT *heap, int k)
563	{	764	{
564	WT w = heap [k];	765	WT w = heap [k];
565		766
566	while (k && heap [k >> 1]->at > w->at)	767	for (;;)
567	{	768	{
		769	int p = k >> 1;
		770
		771	/* maybe we could use a dummy element at heap [0]? */
		772	if (!p || heap [p]->at <= w->at)
		773	break;
		774
568	heap [k] = heap [k >> 1];	775	heap [k] = heap [p];
569	((W)heap [k])->active = k + 1;	776	((W)heap [k])->active = k;
570	k >>= 1;	777	k = p;
571	}	778	}
572		779
573	heap [k] = w;	780	heap [k] = w;
574	((W)heap [k])->active = k + 1;	781	((W)heap [k])->active = k;
575
576	}	782	}
577		783
		784	/* away from the root */
578	void inline_speed	785	void inline_speed
579	downheap (WT *heap, int N, int k)	786	downheap (WT *heap, int N, int k)
580	{	787	{
581	WT w = heap [k];	788	WT w = heap [k];
582		789
583	while (k < (N >> 1))	790	for (;;)
584	{	791	{
585	int j = k << 1;	792	int c = k << 1;
586		793
587	if (j + 1 < N && heap [j]->at > heap [j + 1]->at)	794	if (c > N)
588	++j;
589
590	if (w->at <= heap [j]->at)
591	break;	795	break;
592		796
		797	c += c < N && heap [c]->at > heap [c + 1]->at
		798	? 1 : 0;
		799
		800	if (w->at <= heap [c]->at)
		801	break;
		802
593	heap [k] = heap [j];	803	heap [k] = heap [c];
594	((W)heap [k])->active = k + 1;	804	((W)heap [k])->active = k;
		805
595	k = j;	806	k = c;
596	}	807	}
597		808
598	heap [k] = w;	809	heap [k] = w;
599	((W)heap [k])->active = k + 1;	810	((W)heap [k])->active = k;
600	}	811	}
601		812
602	void inline_size	813	void inline_size
603	adjustheap (WT *heap, int N, int k)	814	adjustheap (WT *heap, int N, int k)
604	{	815	{
…		…
609	/*****************************************************************************/	820	/*****************************************************************************/
610		821
611	typedef struct	822	typedef struct
612	{	823	{
613	WL head;	824	WL head;
614	sig_atomic_t volatile gotsig;	825	EV_ATOMIC_T gotsig;
615	} ANSIG;	826	} ANSIG;
616		827
617	static ANSIG *signals;	828	static ANSIG *signals;
618	static int signalmax;	829	static int signalmax;
619		830
620	static int sigpipe [2];	831	static EV_ATOMIC_T gotsig;
621	static sig_atomic_t volatile gotsig;
622	static ev_io sigev;
623		832
624	void inline_size	833	void inline_size
625	signals_init (ANSIG *base, int count)	834	signals_init (ANSIG *base, int count)
626	{	835	{
627	while (count--)	836	while (count--)
…		…
631		840
632	++base;	841	++base;
633	}	842	}
634	}	843	}
635		844
636	static void	845	/*****************************************************************************/
637	sighandler (int signum)
638	{
639	#if _WIN32
640	signal (signum, sighandler);
641	#endif
642		846
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	847	void inline_speed
688	fd_intern (int fd)	848	fd_intern (int fd)
689	{	849	{
690	#ifdef _WIN32	850	#ifdef _WIN32
691	int arg = 1;	851	int arg = 1;
692	ioctlsocket (_get_osfhandle (fd), FIONBIO, &arg);	852	ioctlsocket (_get_osfhandle (fd), FIONBIO, &arg);
…		…
695	fcntl (fd, F_SETFL, O_NONBLOCK);	855	fcntl (fd, F_SETFL, O_NONBLOCK);
696	#endif	856	#endif
697	}	857	}
698		858
699	static void noinline	859	static void noinline
700	siginit (EV_P)	860	evpipe_init (EV_P)
701	{	861	{
		862	if (!ev_is_active (&pipeev))
		863	{
		864	#if EV_USE_EVENTFD
		865	if ((evfd = eventfd (0, 0)) >= 0)
		866	{
		867	evpipe [0] = -1;
		868	fd_intern (evfd);
		869	ev_io_set (&pipeev, evfd, EV_READ);
		870	}
		871	else
		872	#endif
		873	{
		874	while (pipe (evpipe))
		875	syserr ("(libev) error creating signal/async pipe");
		876
702	fd_intern (sigpipe [0]);	877	fd_intern (evpipe [0]);
703	fd_intern (sigpipe [1]);	878	fd_intern (evpipe [1]);
		879	ev_io_set (&pipeev, evpipe [0], EV_READ);
		880	}
704		881
705	ev_io_set (&sigev, sigpipe [0], EV_READ);
706	ev_io_start (EV_A_ &sigev);	882	ev_io_start (EV_A_ &pipeev);
707	ev_unref (EV_A); /* child watcher should not keep loop alive */	883	ev_unref (EV_A); /* watcher should not keep loop alive */
		884	}
		885	}
		886
		887	void inline_size
		888	evpipe_write (EV_P_ EV_ATOMIC_T *flag)
		889	{
		890	if (!*flag)
		891	{
		892	int old_errno = errno; /* save errno because write might clobber it */
		893
		894	*flag = 1;
		895
		896	#if EV_USE_EVENTFD
		897	if (evfd >= 0)
		898	{
		899	uint64_t counter = 1;
		900	write (evfd, &counter, sizeof (uint64_t));
		901	}
		902	else
		903	#endif
		904	write (evpipe [1], &old_errno, 1);
		905
		906	errno = old_errno;
		907	}
		908	}
		909
		910	static void
		911	pipecb (EV_P_ ev_io *iow, int revents)
		912	{
		913	#if EV_USE_EVENTFD
		914	if (evfd >= 0)
		915	{
		916	uint64_t counter = 1;
		917	read (evfd, &counter, sizeof (uint64_t));
		918	}
		919	else
		920	#endif
		921	{
		922	char dummy;
		923	read (evpipe [0], &dummy, 1);
		924	}
		925
		926	if (gotsig && ev_is_default_loop (EV_A))
		927	{
		928	int signum;
		929	gotsig = 0;
		930
		931	for (signum = signalmax; signum--; )
		932	if (signals [signum].gotsig)
		933	ev_feed_signal_event (EV_A_ signum + 1);
		934	}
		935
		936	#if EV_ASYNC_ENABLE
		937	if (gotasync)
		938	{
		939	int i;
		940	gotasync = 0;
		941
		942	for (i = asynccnt; i--; )
		943	if (asyncs [i]->sent)
		944	{
		945	asyncs [i]->sent = 0;
		946	ev_feed_event (EV_A_ asyncs [i], EV_ASYNC);
		947	}
		948	}
		949	#endif
708	}	950	}
709		951
710	/*****************************************************************************/	952	/*****************************************************************************/
711		953
		954	static void
		955	ev_sighandler (int signum)
		956	{
		957	#if EV_MULTIPLICITY
		958	struct ev_loop *loop = &default_loop_struct;
		959	#endif
		960
		961	#if _WIN32
		962	signal (signum, ev_sighandler);
		963	#endif
		964
		965	signals [signum - 1].gotsig = 1;
		966	evpipe_write (EV_A_ &gotsig);
		967	}
		968
		969	void noinline
		970	ev_feed_signal_event (EV_P_ int signum)
		971	{
		972	WL w;
		973
		974	#if EV_MULTIPLICITY
		975	assert (("feeding signal events is only supported in the default loop", loop == ev_default_loop_ptr));
		976	#endif
		977
		978	--signum;
		979
		980	if (signum < 0 || signum >= signalmax)
		981	return;
		982
		983	signals [signum].gotsig = 0;
		984
		985	for (w = signals [signum].head; w; w = w->next)
		986	ev_feed_event (EV_A_ (W)w, EV_SIGNAL);
		987	}
		988
		989	/*****************************************************************************/
		990
712	static ev_child *childs [PID_HASHSIZE];	991	static WL childs [EV_PID_HASHSIZE];
713		992
714	#ifndef _WIN32	993	#ifndef _WIN32
715		994
716	static ev_signal childev;	995	static ev_signal childev;
		996
		997	#ifndef WIFCONTINUED
		998	# define WIFCONTINUED(status) 0
		999	#endif
		1000
		1001	void inline_speed
		1002	child_reap (EV_P_ int chain, int pid, int status)
		1003	{
		1004	ev_child *w;
		1005	int traced = WIFSTOPPED (status) || WIFCONTINUED (status);
		1006
		1007	for (w = (ev_child *)childs [chain & (EV_PID_HASHSIZE - 1)]; w; w = (ev_child *)((WL)w)->next)
		1008	{
		1009	if ((w->pid == pid || !w->pid)
		1010	&& (!traced || (w->flags & 1)))
		1011	{
		1012	ev_set_priority (w, EV_MAXPRI); /* need to do it *now*, this *must* be the same prio as the signal watcher itself */
		1013	w->rpid = pid;
		1014	w->rstatus = status;
		1015	ev_feed_event (EV_A_ (W)w, EV_CHILD);
		1016	}
		1017	}
		1018	}
717		1019
718	#ifndef WCONTINUED	1020	#ifndef WCONTINUED
719	# define WCONTINUED 0	1021	# define WCONTINUED 0
720	#endif	1022	#endif
721		1023
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	1024	static void
738	childcb (EV_P_ ev_signal *sw, int revents)	1025	childcb (EV_P_ ev_signal *sw, int revents)
739	{	1026	{
740	int pid, status;	1027	int pid, status;
741		1028
		1029	/* some systems define WCONTINUED but then fail to support it (linux 2.4) */
742	if (0 < (pid = waitpid (-1, &status, WNOHANG | WUNTRACED | WCONTINUED)))	1030	if (0 >= (pid = waitpid (-1, &status, WNOHANG | WUNTRACED | WCONTINUED)))
743	{	1031	if (!WCONTINUED
		1032	|| errno != EINVAL
		1033	|| 0 >= (pid = waitpid (-1, &status, WNOHANG | WUNTRACED)))
		1034	return;
		1035
744	/* make sure we are called again until all childs have been reaped */	1036	/* 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 */	1037	/* 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);	1038	ev_feed_event (EV_A_ (W)sw, EV_SIGNAL);
747		1039
748	child_reap (EV_A_ sw, pid, pid, status);	1040	child_reap (EV_A_ pid, pid, status);
		1041	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 */	1042	child_reap (EV_A_ 0, pid, status); /* this might trigger a watcher twice, but feed_event catches that */
750	}
751	}	1043	}
752		1044
753	#endif	1045	#endif
754		1046
755	/*****************************************************************************/	1047	/*****************************************************************************/
…		…
827	}	1119	}
828		1120
829	unsigned int	1121	unsigned int
830	ev_embeddable_backends (void)	1122	ev_embeddable_backends (void)
831	{	1123	{
832	return EVBACKEND_EPOLL	1124	int flags = EVBACKEND_EPOLL | EVBACKEND_KQUEUE | EVBACKEND_PORT;
833	| EVBACKEND_KQUEUE	1125
834	| EVBACKEND_PORT;	1126	/* epoll embeddability broken on all linux versions up to at least 2.6.23 */
		1127	/* please fix it and tell me how to detect the fix */
		1128	flags &= ~EVBACKEND_EPOLL;
		1129
		1130	return flags;
835	}	1131	}
836		1132
837	unsigned int	1133	unsigned int
838	ev_backend (EV_P)	1134	ev_backend (EV_P)
839	{	1135	{
840	return backend;	1136	return backend;
841	}	1137	}
842		1138
843	static void	1139	unsigned int
		1140	ev_loop_count (EV_P)
		1141	{
		1142	return loop_count;
		1143	}
		1144
		1145	void
		1146	ev_set_io_collect_interval (EV_P_ ev_tstamp interval)
		1147	{
		1148	io_blocktime = interval;
		1149	}
		1150
		1151	void
		1152	ev_set_timeout_collect_interval (EV_P_ ev_tstamp interval)
		1153	{
		1154	timeout_blocktime = interval;
		1155	}
		1156
		1157	static void noinline
844	loop_init (EV_P_ unsigned int flags)	1158	loop_init (EV_P_ unsigned int flags)
845	{	1159	{
846	if (!backend)	1160	if (!backend)
847	{	1161	{
848	#if EV_USE_MONOTONIC	1162	#if EV_USE_MONOTONIC
…		…
851	if (!clock_gettime (CLOCK_MONOTONIC, &ts))	1165	if (!clock_gettime (CLOCK_MONOTONIC, &ts))
852	have_monotonic = 1;	1166	have_monotonic = 1;
853	}	1167	}
854	#endif	1168	#endif
855		1169
856	ev_rt_now = ev_time ();	1170	ev_rt_now = ev_time ();
857	mn_now = get_clock ();	1171	mn_now = get_clock ();
858	now_floor = mn_now;	1172	now_floor = mn_now;
859	rtmn_diff = ev_rt_now - mn_now;	1173	rtmn_diff = ev_rt_now - mn_now;
		1174
		1175	io_blocktime = 0.;
		1176	timeout_blocktime = 0.;
		1177	backend = 0;
		1178	backend_fd = -1;
		1179	gotasync = 0;
		1180	#if EV_USE_INOTIFY
		1181	fs_fd = -2;
		1182	#endif
		1183
		1184	/* pid check not overridable via env */
		1185	#ifndef _WIN32
		1186	if (flags & EVFLAG_FORKCHECK)
		1187	curpid = getpid ();
		1188	#endif
860		1189
861	if (!(flags & EVFLAG_NOENV)	1190	if (!(flags & EVFLAG_NOENV)
862	&& !enable_secure ()	1191	&& !enable_secure ()
863	&& getenv ("LIBEV_FLAGS"))	1192	&& getenv ("LIBEV_FLAGS"))
864	flags = atoi (getenv ("LIBEV_FLAGS"));	1193	flags = atoi (getenv ("LIBEV_FLAGS"));
865		1194
866	if (!(flags & 0x0000ffffUL))	1195	if (!(flags & 0x0000ffffU))
867	flags |= ev_recommended_backends ();	1196	flags |= ev_recommended_backends ();
868		1197
869	backend = 0;
870	#if EV_USE_PORT	1198	#if EV_USE_PORT
871	if (!backend && (flags & EVBACKEND_PORT )) backend = port_init (EV_A_ flags);	1199	if (!backend && (flags & EVBACKEND_PORT )) backend = port_init (EV_A_ flags);
872	#endif	1200	#endif
873	#if EV_USE_KQUEUE	1201	#if EV_USE_KQUEUE
874	if (!backend && (flags & EVBACKEND_KQUEUE)) backend = kqueue_init (EV_A_ flags);	1202	if (!backend && (flags & EVBACKEND_KQUEUE)) backend = kqueue_init (EV_A_ flags);
…		…
881	#endif	1209	#endif
882	#if EV_USE_SELECT	1210	#if EV_USE_SELECT
883	if (!backend && (flags & EVBACKEND_SELECT)) backend = select_init (EV_A_ flags);	1211	if (!backend && (flags & EVBACKEND_SELECT)) backend = select_init (EV_A_ flags);
884	#endif	1212	#endif
885		1213
886	ev_init (&sigev, sigcb);	1214	ev_init (&pipeev, pipecb);
887	ev_set_priority (&sigev, EV_MAXPRI);	1215	ev_set_priority (&pipeev, EV_MAXPRI);
888	}	1216	}
889	}	1217	}
890		1218
891	static void	1219	static void noinline
892	loop_destroy (EV_P)	1220	loop_destroy (EV_P)
893	{	1221	{
894	int i;	1222	int i;
		1223
		1224	if (ev_is_active (&pipeev))
		1225	{
		1226	ev_ref (EV_A); /* signal watcher */
		1227	ev_io_stop (EV_A_ &pipeev);
		1228
		1229	#if EV_USE_EVENTFD
		1230	if (evfd >= 0)
		1231	close (evfd);
		1232	#endif
		1233
		1234	if (evpipe [0] >= 0)
		1235	{
		1236	close (evpipe [0]);
		1237	close (evpipe [1]);
		1238	}
		1239	}
		1240
		1241	#if EV_USE_INOTIFY
		1242	if (fs_fd >= 0)
		1243	close (fs_fd);
		1244	#endif
		1245
		1246	if (backend_fd >= 0)
		1247	close (backend_fd);
895		1248
896	#if EV_USE_PORT	1249	#if EV_USE_PORT
897	if (backend == EVBACKEND_PORT ) port_destroy (EV_A);	1250	if (backend == EVBACKEND_PORT ) port_destroy (EV_A);
898	#endif	1251	#endif
899	#if EV_USE_KQUEUE	1252	#if EV_USE_KQUEUE
…		…
908	#if EV_USE_SELECT	1261	#if EV_USE_SELECT
909	if (backend == EVBACKEND_SELECT) select_destroy (EV_A);	1262	if (backend == EVBACKEND_SELECT) select_destroy (EV_A);
910	#endif	1263	#endif
911		1264
912	for (i = NUMPRI; i--; )	1265	for (i = NUMPRI; i--; )
		1266	{
913	array_free (pending, [i]);	1267	array_free (pending, [i]);
		1268	#if EV_IDLE_ENABLE
		1269	array_free (idle, [i]);
		1270	#endif
		1271	}
		1272
		1273	ev_free (anfds); anfdmax = 0;
914		1274
915	/* have to use the microsoft-never-gets-it-right macro */	1275	/* have to use the microsoft-never-gets-it-right macro */
916	array_free (fdchange, EMPTY0);	1276	array_free (fdchange, EMPTY);
917	array_free (timer, EMPTY0);	1277	array_free (timer, EMPTY);
918	#if EV_PERIODIC_ENABLE	1278	#if EV_PERIODIC_ENABLE
919	array_free (periodic, EMPTY0);	1279	array_free (periodic, EMPTY);
920	#endif	1280	#endif
		1281	#if EV_FORK_ENABLE
921	array_free (idle, EMPTY0);	1282	array_free (fork, EMPTY);
		1283	#endif
922	array_free (prepare, EMPTY0);	1284	array_free (prepare, EMPTY);
923	array_free (check, EMPTY0);	1285	array_free (check, EMPTY);
		1286	#if EV_ASYNC_ENABLE
		1287	array_free (async, EMPTY);
		1288	#endif
924		1289
925	backend = 0;	1290	backend = 0;
926	}	1291	}
927		1292
928	static void	1293	#if EV_USE_INOTIFY
		1294	void inline_size infy_fork (EV_P);
		1295	#endif
		1296
		1297	void inline_size
929	loop_fork (EV_P)	1298	loop_fork (EV_P)
930	{	1299	{
931	#if EV_USE_PORT	1300	#if EV_USE_PORT
932	if (backend == EVBACKEND_PORT ) port_fork (EV_A);	1301	if (backend == EVBACKEND_PORT ) port_fork (EV_A);
933	#endif	1302	#endif
…		…
935	if (backend == EVBACKEND_KQUEUE) kqueue_fork (EV_A);	1304	if (backend == EVBACKEND_KQUEUE) kqueue_fork (EV_A);
936	#endif	1305	#endif
937	#if EV_USE_EPOLL	1306	#if EV_USE_EPOLL
938	if (backend == EVBACKEND_EPOLL ) epoll_fork (EV_A);	1307	if (backend == EVBACKEND_EPOLL ) epoll_fork (EV_A);
939	#endif	1308	#endif
		1309	#if EV_USE_INOTIFY
		1310	infy_fork (EV_A);
		1311	#endif
940		1312
941	if (ev_is_active (&sigev))	1313	if (ev_is_active (&pipeev))
942	{	1314	{
943	/* default loop */	1315	/* this "locks" the handlers against writing to the pipe */
		1316	/* while we modify the fd vars */
		1317	gotsig = 1;
		1318	#if EV_ASYNC_ENABLE
		1319	gotasync = 1;
		1320	#endif
944		1321
945	ev_ref (EV_A);	1322	ev_ref (EV_A);
946	ev_io_stop (EV_A_ &sigev);	1323	ev_io_stop (EV_A_ &pipeev);
		1324
		1325	#if EV_USE_EVENTFD
		1326	if (evfd >= 0)
		1327	close (evfd);
		1328	#endif
		1329
		1330	if (evpipe [0] >= 0)
		1331	{
947	close (sigpipe [0]);	1332	close (evpipe [0]);
948	close (sigpipe [1]);	1333	close (evpipe [1]);
		1334	}
949		1335
950	while (pipe (sigpipe))
951	syserr ("(libev) error creating pipe");
952
953	siginit (EV_A);	1336	evpipe_init (EV_A);
		1337	/* now iterate over everything, in case we missed something */
		1338	pipecb (EV_A_ &pipeev, EV_READ);
954	}	1339	}
955		1340
956	postfork = 0;	1341	postfork = 0;
957	}	1342	}
958		1343
…		…
980	}	1365	}
981		1366
982	void	1367	void
983	ev_loop_fork (EV_P)	1368	ev_loop_fork (EV_P)
984	{	1369	{
985	postfork = 1;	1370	postfork = 1; /* must be in line with ev_default_fork */
986	}	1371	}
987		1372
988	#endif	1373	#endif
989		1374
990	#if EV_MULTIPLICITY	1375	#if EV_MULTIPLICITY
…		…
993	#else	1378	#else
994	int	1379	int
995	ev_default_loop (unsigned int flags)	1380	ev_default_loop (unsigned int flags)
996	#endif	1381	#endif
997	{	1382	{
998	if (sigpipe [0] == sigpipe [1])
999	if (pipe (sigpipe))
1000	return 0;
1001
1002	if (!ev_default_loop_ptr)	1383	if (!ev_default_loop_ptr)
1003	{	1384	{
1004	#if EV_MULTIPLICITY	1385	#if EV_MULTIPLICITY
1005	struct ev_loop *loop = ev_default_loop_ptr = &default_loop_struct;	1386	struct ev_loop *loop = ev_default_loop_ptr = &default_loop_struct;
1006	#else	1387	#else
…		…
1009		1390
1010	loop_init (EV_A_ flags);	1391	loop_init (EV_A_ flags);
1011		1392
1012	if (ev_backend (EV_A))	1393	if (ev_backend (EV_A))
1013	{	1394	{
1014	siginit (EV_A);
1015
1016	#ifndef _WIN32	1395	#ifndef _WIN32
1017	ev_signal_init (&childev, childcb, SIGCHLD);	1396	ev_signal_init (&childev, childcb, SIGCHLD);
1018	ev_set_priority (&childev, EV_MAXPRI);	1397	ev_set_priority (&childev, EV_MAXPRI);
1019	ev_signal_start (EV_A_ &childev);	1398	ev_signal_start (EV_A_ &childev);
1020	ev_unref (EV_A); /* child watcher should not keep loop alive */	1399	ev_unref (EV_A); /* child watcher should not keep loop alive */
…		…
1037	#ifndef _WIN32	1416	#ifndef _WIN32
1038	ev_ref (EV_A); /* child watcher */	1417	ev_ref (EV_A); /* child watcher */
1039	ev_signal_stop (EV_A_ &childev);	1418	ev_signal_stop (EV_A_ &childev);
1040	#endif	1419	#endif
1041		1420
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);	1421	loop_destroy (EV_A);
1049	}	1422	}
1050		1423
1051	void	1424	void
1052	ev_default_fork (void)	1425	ev_default_fork (void)
…		…
1054	#if EV_MULTIPLICITY	1427	#if EV_MULTIPLICITY
1055	struct ev_loop *loop = ev_default_loop_ptr;	1428	struct ev_loop *loop = ev_default_loop_ptr;
1056	#endif	1429	#endif
1057		1430
1058	if (backend)	1431	if (backend)
1059	postfork = 1;	1432	postfork = 1; /* must be in line with ev_loop_fork */
1060	}	1433	}
1061		1434
1062	/*****************************************************************************/	1435	/*****************************************************************************/
1063		1436
1064	int inline_size	1437	void
1065	any_pending (EV_P)	1438	ev_invoke (EV_P_ void *w, int revents)
1066	{	1439	{
1067	int pri;	1440	EV_CB_INVOKE ((W)w, revents);
1068
1069	for (pri = NUMPRI; pri--; )
1070	if (pendingcnt [pri])
1071	return 1;
1072
1073	return 0;
1074	}	1441	}
1075		1442
1076	void inline_speed	1443	void inline_speed
1077	call_pending (EV_P)	1444	call_pending (EV_P)
1078	{	1445	{
…		…
1083	{	1450	{
1084	ANPENDING *p = pendings [pri] + --pendingcnt [pri];	1451	ANPENDING *p = pendings [pri] + --pendingcnt [pri];
1085		1452
1086	if (expect_true (p->w))	1453	if (expect_true (p->w))
1087	{	1454	{
1088	assert (("non-pending watcher on pending list", p->w->pending));	1455	/*assert (("non-pending watcher on pending list", p->w->pending));*/
1089		1456
1090	p->w->pending = 0;	1457	p->w->pending = 0;
1091	EV_CB_INVOKE (p->w, p->events);	1458	EV_CB_INVOKE (p->w, p->events);
1092	}	1459	}
1093	}	1460	}
1094	}	1461	}
1095		1462
1096	void inline_size	1463	void inline_size
1097	timers_reify (EV_P)	1464	timers_reify (EV_P)
1098	{	1465	{
1099	while (timercnt && ((WT)timers [0])->at <= mn_now)	1466	while (timercnt && ev_at (timers [1]) <= mn_now)
1100	{	1467	{
1101	ev_timer *w = timers [0];	1468	ev_timer *w = (ev_timer *)timers [1];
1102		1469
1103	assert (("inactive timer on timer heap detected", ev_is_active (w)));	1470	/*assert (("inactive timer on timer heap detected", ev_is_active (w)));*/
1104		1471
1105	/* first reschedule or stop timer */	1472	/* first reschedule or stop timer */
1106	if (w->repeat)	1473	if (w->repeat)
1107	{	1474	{
1108	assert (("negative ev_timer repeat value found while processing timers", w->repeat > 0.));	1475	assert (("negative ev_timer repeat value found while processing timers", w->repeat > 0.));
1109		1476
1110	((WT)w)->at += w->repeat;	1477	ev_at (w) += w->repeat;
1111	if (((WT)w)->at < mn_now)	1478	if (ev_at (w) < mn_now)
1112	((WT)w)->at = mn_now;	1479	ev_at (w) = mn_now;
1113		1480
1114	downheap ((WT *)timers, timercnt, 0);	1481	downheap (timers, timercnt, 1);
1115	}	1482	}
1116	else	1483	else
1117	ev_timer_stop (EV_A_ w); /* nonrepeating: stop timer */	1484	ev_timer_stop (EV_A_ w); /* nonrepeating: stop timer */
1118		1485
1119	ev_feed_event (EV_A_ (W)w, EV_TIMEOUT);	1486	ev_feed_event (EV_A_ (W)w, EV_TIMEOUT);
…		…
1122		1489
1123	#if EV_PERIODIC_ENABLE	1490	#if EV_PERIODIC_ENABLE
1124	void inline_size	1491	void inline_size
1125	periodics_reify (EV_P)	1492	periodics_reify (EV_P)
1126	{	1493	{
1127	while (periodiccnt && ((WT)periodics [0])->at <= ev_rt_now)	1494	while (periodiccnt && ev_at (periodics [1]) <= ev_rt_now)
1128	{	1495	{
1129	ev_periodic *w = periodics [0];	1496	ev_periodic *w = (ev_periodic *)periodics [1];
1130		1497
1131	assert (("inactive timer on periodic heap detected", ev_is_active (w)));	1498	/*assert (("inactive timer on periodic heap detected", ev_is_active (w)));*/
1132		1499
1133	/* first reschedule or stop timer */	1500	/* first reschedule or stop timer */
1134	if (w->reschedule_cb)	1501	if (w->reschedule_cb)
1135	{	1502	{
1136	((WT)w)->at = w->reschedule_cb (w, ev_rt_now + 0.0001);	1503	ev_at (w) = 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));	1504	assert (("ev_periodic reschedule callback returned time in the past", ev_at (w) > ev_rt_now));
1138	downheap ((WT *)periodics, periodiccnt, 0);	1505	downheap (periodics, periodiccnt, 1);
1139	}	1506	}
1140	else if (w->interval)	1507	else if (w->interval)
1141	{	1508	{
1142	((WT)w)->at += floor ((ev_rt_now - ((WT)w)->at) / w->interval + 1.) * w->interval;	1509	ev_at (w) = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval;
		1510	if (ev_at (w) - ev_rt_now <= TIME_EPSILON) ev_at (w) += w->interval;
1143	assert (("ev_periodic timeout in the past detected while processing timers, negative interval?", ((WT)w)->at > ev_rt_now));	1511	assert (("ev_periodic timeout in the past detected while processing timers, negative interval?", ev_at (w) > ev_rt_now));
1144	downheap ((WT *)periodics, periodiccnt, 0);	1512	downheap (periodics, periodiccnt, 1);
1145	}	1513	}
1146	else	1514	else
1147	ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */	1515	ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */
1148		1516
1149	ev_feed_event (EV_A_ (W)w, EV_PERIODIC);	1517	ev_feed_event (EV_A_ (W)w, EV_PERIODIC);
…		…
1156	int i;	1524	int i;
1157		1525
1158	/* adjust periodics after time jump */	1526	/* adjust periodics after time jump */
1159	for (i = 0; i < periodiccnt; ++i)	1527	for (i = 0; i < periodiccnt; ++i)
1160	{	1528	{
1161	ev_periodic *w = periodics [i];	1529	ev_periodic *w = (ev_periodic *)periodics [i];
1162		1530
1163	if (w->reschedule_cb)	1531	if (w->reschedule_cb)
1164	((WT)w)->at = w->reschedule_cb (w, ev_rt_now);	1532	ev_at (w) = w->reschedule_cb (w, ev_rt_now);
1165	else if (w->interval)	1533	else if (w->interval)
1166	((WT)w)->at += ceil ((ev_rt_now - ((WT)w)->at) / w->interval) * w->interval;	1534	ev_at (w) = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval;
1167	}	1535	}
1168		1536
1169	/* now rebuild the heap */	1537	/* now rebuild the heap */
1170	for (i = periodiccnt >> 1; i--; )	1538	for (i = periodiccnt >> 1; i--; )
1171	downheap ((WT *)periodics, periodiccnt, i);	1539	downheap (periodics, periodiccnt, i);
1172	}	1540	}
1173	#endif	1541	#endif
1174		1542
		1543	#if EV_IDLE_ENABLE
1175	int inline_size	1544	void inline_size
1176	time_update_monotonic (EV_P)	1545	idle_reify (EV_P)
1177	{	1546	{
		1547	if (expect_false (idleall))
		1548	{
		1549	int pri;
		1550
		1551	for (pri = NUMPRI; pri--; )
		1552	{
		1553	if (pendingcnt [pri])
		1554	break;
		1555
		1556	if (idlecnt [pri])
		1557	{
		1558	queue_events (EV_A_ (W *)idles [pri], idlecnt [pri], EV_IDLE);
		1559	break;
		1560	}
		1561	}
		1562	}
		1563	}
		1564	#endif
		1565
		1566	void inline_speed
		1567	time_update (EV_P_ ev_tstamp max_block)
		1568	{
		1569	int i;
		1570
		1571	#if EV_USE_MONOTONIC
		1572	if (expect_true (have_monotonic))
		1573	{
		1574	ev_tstamp odiff = rtmn_diff;
		1575
1178	mn_now = get_clock ();	1576	mn_now = get_clock ();
1179		1577
		1578	/* only fetch the realtime clock every 0.5*MIN_TIMEJUMP seconds */
		1579	/* interpolate in the meantime */
1180	if (expect_true (mn_now - now_floor < MIN_TIMEJUMP * .5))	1580	if (expect_true (mn_now - now_floor < MIN_TIMEJUMP * .5))
1181	{	1581	{
1182	ev_rt_now = rtmn_diff + mn_now;	1582	ev_rt_now = rtmn_diff + mn_now;
1183	return 0;	1583	return;
1184	}	1584	}
1185	else	1585
1186	{
1187	now_floor = mn_now;	1586	now_floor = mn_now;
1188	ev_rt_now = ev_time ();	1587	ev_rt_now = ev_time ();
1189	return 1;
1190	}
1191	}
1192		1588
1193	void inline_size	1589	/* loop a few times, before making important decisions.
1194	time_update (EV_P)	1590	* on the choice of "4": one iteration isn't enough,
1195	{	1591	* in case we get preempted during the calls to
1196	int i;	1592	* ev_time and get_clock. a second call is almost guaranteed
1197		1593	* to succeed in that case, though. and looping a few more times
1198	#if EV_USE_MONOTONIC	1594	* doesn't hurt either as we only do this on time-jumps or
1199	if (expect_true (have_monotonic))	1595	* in the unlikely event of having been preempted here.
1200	{	1596	*/
1201	if (time_update_monotonic (EV_A))	1597	for (i = 4; --i; )
1202	{	1598	{
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;	1599	rtmn_diff = ev_rt_now - mn_now;
1216		1600
1217	if (fabs (odiff - rtmn_diff) < MIN_TIMEJUMP)	1601	if (fabs (odiff - rtmn_diff) < MIN_TIMEJUMP)
1218	return; /* all is well */	1602	return; /* all is well */
1219		1603
1220	ev_rt_now = ev_time ();	1604	ev_rt_now = ev_time ();
1221	mn_now = get_clock ();	1605	mn_now = get_clock ();
1222	now_floor = mn_now;	1606	now_floor = mn_now;
1223	}	1607	}
1224		1608
1225	# if EV_PERIODIC_ENABLE	1609	# if EV_PERIODIC_ENABLE
1226	periodics_reschedule (EV_A);	1610	periodics_reschedule (EV_A);
1227	# endif	1611	# endif
1228	/* no timer adjustment, as the monotonic clock doesn't jump */	1612	/* no timer adjustment, as the monotonic clock doesn't jump */
1229	/* timers_reschedule (EV_A_ rtmn_diff - odiff) */	1613	/* timers_reschedule (EV_A_ rtmn_diff - odiff) */
1230	}
1231	}	1614	}
1232	else	1615	else
1233	#endif	1616	#endif
1234	{	1617	{
1235	ev_rt_now = ev_time ();	1618	ev_rt_now = ev_time ();
1236		1619
1237	if (expect_false (mn_now > ev_rt_now || mn_now < ev_rt_now - MAX_BLOCKTIME - MIN_TIMEJUMP))	1620	if (expect_false (mn_now > ev_rt_now || ev_rt_now > mn_now + max_block + MIN_TIMEJUMP))
1238	{	1621	{
1239	#if EV_PERIODIC_ENABLE	1622	#if EV_PERIODIC_ENABLE
1240	periodics_reschedule (EV_A);	1623	periodics_reschedule (EV_A);
1241	#endif	1624	#endif
1242
1243	/* adjust timers. this is easy, as the offset is the same for all */	1625	/* adjust timers. this is easy, as the offset is the same for all of them */
1244	for (i = 0; i < timercnt; ++i)	1626	for (i = 1; i <= timercnt; ++i)
1245	((WT)timers [i])->at += ev_rt_now - mn_now;	1627	ev_at (timers [i]) += ev_rt_now - mn_now;
1246	}	1628	}
1247		1629
1248	mn_now = ev_rt_now;	1630	mn_now = ev_rt_now;
1249	}	1631	}
1250	}	1632	}
…		…
1264	static int loop_done;	1646	static int loop_done;
1265		1647
1266	void	1648	void
1267	ev_loop (EV_P_ int flags)	1649	ev_loop (EV_P_ int flags)
1268	{	1650	{
1269	loop_done = flags & (EVLOOP_ONESHOT | EVLOOP_NONBLOCK)	1651	loop_done = EVUNLOOP_CANCEL;
1270	? EVUNLOOP_ONE
1271	: EVUNLOOP_CANCEL;
1272		1652
1273	while (activecnt)	1653	call_pending (EV_A); /* in case we recurse, ensure ordering stays nice and clean */
		1654
		1655	do
1274	{	1656	{
		1657	#ifndef _WIN32
		1658	if (expect_false (curpid)) /* penalise the forking check even more */
		1659	if (expect_false (getpid () != curpid))
		1660	{
		1661	curpid = getpid ();
		1662	postfork = 1;
		1663	}
		1664	#endif
		1665
		1666	#if EV_FORK_ENABLE
		1667	/* we might have forked, so queue fork handlers */
		1668	if (expect_false (postfork))
		1669	if (forkcnt)
		1670	{
		1671	queue_events (EV_A_ (W *)forks, forkcnt, EV_FORK);
		1672	call_pending (EV_A);
		1673	}
		1674	#endif
		1675
1275	/* queue check watchers (and execute them) */	1676	/* queue prepare watchers (and execute them) */
1276	if (expect_false (preparecnt))	1677	if (expect_false (preparecnt))
1277	{	1678	{
1278	queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE);	1679	queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE);
1279	call_pending (EV_A);	1680	call_pending (EV_A);
1280	}	1681	}
1281		1682
		1683	if (expect_false (!activecnt))
		1684	break;
		1685
1282	/* we might have forked, so reify kernel state if necessary */	1686	/* we might have forked, so reify kernel state if necessary */
1283	if (expect_false (postfork))	1687	if (expect_false (postfork))
1284	loop_fork (EV_A);	1688	loop_fork (EV_A);
1285		1689
1286	/* update fd-related kernel structures */	1690	/* update fd-related kernel structures */
1287	fd_reify (EV_A);	1691	fd_reify (EV_A);
1288		1692
1289	/* calculate blocking time */	1693	/* calculate blocking time */
1290	{	1694	{
1291	double block;	1695	ev_tstamp waittime = 0.;
		1696	ev_tstamp sleeptime = 0.;
1292		1697
1293	if (flags & EVLOOP_NONBLOCK || idlecnt)	1698	if (expect_true (!(flags & EVLOOP_NONBLOCK || idleall || !activecnt)))
1294	block = 0.; /* do not block at all */
1295	else
1296	{	1699	{
1297	/* update time to cancel out callback processing overhead */	1700	/* 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);	1701	time_update (EV_A_ 1e100);
1301	else
1302	#endif
1303	{
1304	ev_rt_now = ev_time ();
1305	mn_now = ev_rt_now;
1306	}
1307		1702
1308	block = MAX_BLOCKTIME;	1703	waittime = MAX_BLOCKTIME;
1309		1704
1310	if (timercnt)	1705	if (timercnt)
1311	{	1706	{
1312	ev_tstamp to = ((WT)timers [0])->at - mn_now + backend_fudge;	1707	ev_tstamp to = ev_at (timers [1]) - mn_now + backend_fudge;
1313	if (block > to) block = to;	1708	if (waittime > to) waittime = to;
1314	}	1709	}
1315		1710
1316	#if EV_PERIODIC_ENABLE	1711	#if EV_PERIODIC_ENABLE
1317	if (periodiccnt)	1712	if (periodiccnt)
1318	{	1713	{
1319	ev_tstamp to = ((WT)periodics [0])->at - ev_rt_now + backend_fudge;	1714	ev_tstamp to = ev_at (periodics [1]) - ev_rt_now + backend_fudge;
1320	if (block > to) block = to;	1715	if (waittime > to) waittime = to;
1321	}	1716	}
1322	#endif	1717	#endif
1323		1718
1324	if (expect_false (block < 0.)) block = 0.;	1719	if (expect_false (waittime < timeout_blocktime))
		1720	waittime = timeout_blocktime;
		1721
		1722	sleeptime = waittime - backend_fudge;
		1723
		1724	if (expect_true (sleeptime > io_blocktime))
		1725	sleeptime = io_blocktime;
		1726
		1727	if (sleeptime)
		1728	{
		1729	ev_sleep (sleeptime);
		1730	waittime -= sleeptime;
		1731	}
1325	}	1732	}
1326		1733
		1734	++loop_count;
1327	backend_poll (EV_A_ block);	1735	backend_poll (EV_A_ waittime);
		1736
		1737	/* update ev_rt_now, do magic */
		1738	time_update (EV_A_ waittime + sleeptime);
1328	}	1739	}
1329
1330	/* update ev_rt_now, do magic */
1331	time_update (EV_A);
1332		1740
1333	/* queue pending timers and reschedule them */	1741	/* queue pending timers and reschedule them */
1334	timers_reify (EV_A); /* relative timers called last */	1742	timers_reify (EV_A); /* relative timers called last */
1335	#if EV_PERIODIC_ENABLE	1743	#if EV_PERIODIC_ENABLE
1336	periodics_reify (EV_A); /* absolute timers called first */	1744	periodics_reify (EV_A); /* absolute timers called first */
1337	#endif	1745	#endif
1338		1746
		1747	#if EV_IDLE_ENABLE
1339	/* queue idle watchers unless other events are pending */	1748	/* queue idle watchers unless other events are pending */
1340	if (idlecnt && !any_pending (EV_A))	1749	idle_reify (EV_A);
1341	queue_events (EV_A_ (W *)idles, idlecnt, EV_IDLE);	1750	#endif
1342		1751
1343	/* queue check watchers, to be executed first */	1752	/* queue check watchers, to be executed first */
1344	if (expect_false (checkcnt))	1753	if (expect_false (checkcnt))
1345	queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK);	1754	queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK);
1346		1755
1347	call_pending (EV_A);	1756	call_pending (EV_A);
1348
1349	if (expect_false (loop_done))
1350	break;
1351	}	1757	}
		1758	while (expect_true (
		1759	activecnt
		1760	&& !loop_done
		1761	&& !(flags & (EVLOOP_ONESHOT | EVLOOP_NONBLOCK))
		1762	));
1352		1763
1353	if (loop_done == EVUNLOOP_ONE)	1764	if (loop_done == EVUNLOOP_ONE)
1354	loop_done = EVUNLOOP_CANCEL;	1765	loop_done = EVUNLOOP_CANCEL;
1355	}	1766	}
1356		1767
…		…
1383	head = &(*head)->next;	1794	head = &(*head)->next;
1384	}	1795	}
1385	}	1796	}
1386		1797
1387	void inline_speed	1798	void inline_speed
1388	ev_clear_pending (EV_P_ W w)	1799	clear_pending (EV_P_ W w)
1389	{	1800	{
1390	if (w->pending)	1801	if (w->pending)
1391	{	1802	{
1392	pendings [ABSPRI (w)][w->pending - 1].w = 0;	1803	pendings [ABSPRI (w)][w->pending - 1].w = 0;
1393	w->pending = 0;	1804	w->pending = 0;
1394	}	1805	}
1395	}	1806	}
1396		1807
		1808	int
		1809	ev_clear_pending (EV_P_ void *w)
		1810	{
		1811	W w_ = (W)w;
		1812	int pending = w_->pending;
		1813
		1814	if (expect_true (pending))
		1815	{
		1816	ANPENDING *p = pendings [ABSPRI (w_)] + pending - 1;
		1817	w_->pending = 0;
		1818	p->w = 0;
		1819	return p->events;
		1820	}
		1821	else
		1822	return 0;
		1823	}
		1824
		1825	void inline_size
		1826	pri_adjust (EV_P_ W w)
		1827	{
		1828	int pri = w->priority;
		1829	pri = pri < EV_MINPRI ? EV_MINPRI : pri;
		1830	pri = pri > EV_MAXPRI ? EV_MAXPRI : pri;
		1831	w->priority = pri;
		1832	}
		1833
1397	void inline_speed	1834	void inline_speed
1398	ev_start (EV_P_ W w, int active)	1835	ev_start (EV_P_ W w, int active)
1399	{	1836	{
1400	if (w->priority < EV_MINPRI) w->priority = EV_MINPRI;	1837	pri_adjust (EV_A_ w);
1401	if (w->priority > EV_MAXPRI) w->priority = EV_MAXPRI;
1402
1403	w->active = active;	1838	w->active = active;
1404	ev_ref (EV_A);	1839	ev_ref (EV_A);
1405	}	1840	}
1406		1841
1407	void inline_size	1842	void inline_size
…		…
1411	w->active = 0;	1846	w->active = 0;
1412	}	1847	}
1413		1848
1414	/*****************************************************************************/	1849	/*****************************************************************************/
1415		1850
1416	void	1851	void noinline
1417	ev_io_start (EV_P_ ev_io *w)	1852	ev_io_start (EV_P_ ev_io *w)
1418	{	1853	{
1419	int fd = w->fd;	1854	int fd = w->fd;
1420		1855
1421	if (expect_false (ev_is_active (w)))	1856	if (expect_false (ev_is_active (w)))
…		…
1423		1858
1424	assert (("ev_io_start called with negative fd", fd >= 0));	1859	assert (("ev_io_start called with negative fd", fd >= 0));
1425		1860
1426	ev_start (EV_A_ (W)w, 1);	1861	ev_start (EV_A_ (W)w, 1);
1427	array_needsize (ANFD, anfds, anfdmax, fd + 1, anfds_init);	1862	array_needsize (ANFD, anfds, anfdmax, fd + 1, anfds_init);
1428	wlist_add ((WL *)&anfds[fd].head, (WL)w);	1863	wlist_add (&anfds[fd].head, (WL)w);
1429		1864
1430	fd_change (EV_A_ fd);	1865	fd_change (EV_A_ fd, w->events & EV_IOFDSET | 1);
		1866	w->events &= ~EV_IOFDSET;
1431	}	1867	}
1432		1868
1433	void	1869	void noinline
1434	ev_io_stop (EV_P_ ev_io *w)	1870	ev_io_stop (EV_P_ ev_io *w)
1435	{	1871	{
1436	ev_clear_pending (EV_A_ (W)w);	1872	clear_pending (EV_A_ (W)w);
1437	if (expect_false (!ev_is_active (w)))	1873	if (expect_false (!ev_is_active (w)))
1438	return;	1874	return;
1439		1875
1440	assert (("ev_io_start called with illegal fd (must stay constant after start!)", w->fd >= 0 && w->fd < anfdmax));	1876	assert (("ev_io_start called with illegal fd (must stay constant after start!)", w->fd >= 0 && w->fd < anfdmax));
1441		1877
1442	wlist_del ((WL *)&anfds[w->fd].head, (WL)w);	1878	wlist_del (&anfds[w->fd].head, (WL)w);
1443	ev_stop (EV_A_ (W)w);	1879	ev_stop (EV_A_ (W)w);
1444		1880
1445	fd_change (EV_A_ w->fd);	1881	fd_change (EV_A_ w->fd, 1);
1446	}	1882	}
1447		1883
1448	void	1884	void noinline
1449	ev_timer_start (EV_P_ ev_timer *w)	1885	ev_timer_start (EV_P_ ev_timer *w)
1450	{	1886	{
1451	if (expect_false (ev_is_active (w)))	1887	if (expect_false (ev_is_active (w)))
1452	return;	1888	return;
1453		1889
1454	((WT)w)->at += mn_now;	1890	ev_at (w) += mn_now;
1455		1891
1456	assert (("ev_timer_start called with negative timer repeat value", w->repeat >= 0.));	1892	assert (("ev_timer_start called with negative timer repeat value", w->repeat >= 0.));
1457		1893
1458	ev_start (EV_A_ (W)w, ++timercnt);	1894	ev_start (EV_A_ (W)w, ++timercnt);
1459	array_needsize (ev_timer *, timers, timermax, timercnt, EMPTY2);	1895	array_needsize (WT, timers, timermax, timercnt + 1, EMPTY2);
1460	timers [timercnt - 1] = w;	1896	timers [timercnt] = (WT)w;
1461	upheap ((WT *)timers, timercnt - 1);	1897	upheap (timers, timercnt);
1462		1898
1463	assert (("internal timer heap corruption", timers [((W)w)->active - 1] == w));	1899	/*assert (("internal timer heap corruption", timers [((W)w)->active] == w));*/
1464	}	1900	}
1465		1901
1466	void	1902	void noinline
1467	ev_timer_stop (EV_P_ ev_timer *w)	1903	ev_timer_stop (EV_P_ ev_timer *w)
1468	{	1904	{
1469	ev_clear_pending (EV_A_ (W)w);	1905	clear_pending (EV_A_ (W)w);
1470	if (expect_false (!ev_is_active (w)))	1906	if (expect_false (!ev_is_active (w)))
1471	return;	1907	return;
1472		1908
1473	assert (("internal timer heap corruption", timers [((W)w)->active - 1] == w));	1909	assert (("internal timer heap corruption", timers [((W)w)->active] == (WT)w));
1474		1910
		1911	{
		1912	int active = ((W)w)->active;
		1913
1475	if (expect_true (((W)w)->active < timercnt--))	1914	if (expect_true (active < timercnt))
1476	{	1915	{
1477	timers [((W)w)->active - 1] = timers [timercnt];	1916	timers [active] = timers [timercnt];
1478	adjustheap ((WT *)timers, timercnt, ((W)w)->active - 1);	1917	adjustheap (timers, timercnt, active);
1479	}	1918	}
1480		1919
1481	((WT)w)->at -= mn_now;	1920	--timercnt;
		1921	}
		1922
		1923	ev_at (w) -= mn_now;
1482		1924
1483	ev_stop (EV_A_ (W)w);	1925	ev_stop (EV_A_ (W)w);
1484	}	1926	}
1485		1927
1486	void	1928	void noinline
1487	ev_timer_again (EV_P_ ev_timer *w)	1929	ev_timer_again (EV_P_ ev_timer *w)
1488	{	1930	{
1489	if (ev_is_active (w))	1931	if (ev_is_active (w))
1490	{	1932	{
1491	if (w->repeat)	1933	if (w->repeat)
1492	{	1934	{
1493	((WT)w)->at = mn_now + w->repeat;	1935	ev_at (w) = mn_now + w->repeat;
1494	adjustheap ((WT *)timers, timercnt, ((W)w)->active - 1);	1936	adjustheap (timers, timercnt, ((W)w)->active);
1495	}	1937	}
1496	else	1938	else
1497	ev_timer_stop (EV_A_ w);	1939	ev_timer_stop (EV_A_ w);
1498	}	1940	}
1499	else if (w->repeat)	1941	else if (w->repeat)
…		…
1502	ev_timer_start (EV_A_ w);	1944	ev_timer_start (EV_A_ w);
1503	}	1945	}
1504	}	1946	}
1505		1947
1506	#if EV_PERIODIC_ENABLE	1948	#if EV_PERIODIC_ENABLE
1507	void	1949	void noinline
1508	ev_periodic_start (EV_P_ ev_periodic *w)	1950	ev_periodic_start (EV_P_ ev_periodic *w)
1509	{	1951	{
1510	if (expect_false (ev_is_active (w)))	1952	if (expect_false (ev_is_active (w)))
1511	return;	1953	return;
1512		1954
1513	if (w->reschedule_cb)	1955	if (w->reschedule_cb)
1514	((WT)w)->at = w->reschedule_cb (w, ev_rt_now);	1956	ev_at (w) = w->reschedule_cb (w, ev_rt_now);
1515	else if (w->interval)	1957	else if (w->interval)
1516	{	1958	{
1517	assert (("ev_periodic_start called with negative interval value", w->interval >= 0.));	1959	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 */	1960	/* 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;	1961	ev_at (w) = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval;
1520	}	1962	}
		1963	else
		1964	ev_at (w) = w->offset;
1521		1965
1522	ev_start (EV_A_ (W)w, ++periodiccnt);	1966	ev_start (EV_A_ (W)w, ++periodiccnt);
1523	array_needsize (ev_periodic *, periodics, periodicmax, periodiccnt, EMPTY2);	1967	array_needsize (WT, periodics, periodicmax, periodiccnt + 1, EMPTY2);
1524	periodics [periodiccnt - 1] = w;	1968	periodics [periodiccnt] = (WT)w;
1525	upheap ((WT *)periodics, periodiccnt - 1);	1969	upheap (periodics, periodiccnt);
1526		1970
1527	assert (("internal periodic heap corruption", periodics [((W)w)->active - 1] == w));	1971	/*assert (("internal periodic heap corruption", periodics [((W)w)->active - 1] == w));*/
1528	}	1972	}
1529		1973
1530	void	1974	void noinline
1531	ev_periodic_stop (EV_P_ ev_periodic *w)	1975	ev_periodic_stop (EV_P_ ev_periodic *w)
1532	{	1976	{
1533	ev_clear_pending (EV_A_ (W)w);	1977	clear_pending (EV_A_ (W)w);
1534	if (expect_false (!ev_is_active (w)))	1978	if (expect_false (!ev_is_active (w)))
1535	return;	1979	return;
1536		1980
1537	assert (("internal periodic heap corruption", periodics [((W)w)->active - 1] == w));	1981	assert (("internal periodic heap corruption", periodics [((W)w)->active] == (WT)w));
1538		1982
		1983	{
		1984	int active = ((W)w)->active;
		1985
1539	if (expect_true (((W)w)->active < periodiccnt--))	1986	if (expect_true (active < periodiccnt))
1540	{	1987	{
1541	periodics [((W)w)->active - 1] = periodics [periodiccnt];	1988	periodics [active] = periodics [periodiccnt];
1542	adjustheap ((WT *)periodics, periodiccnt, ((W)w)->active - 1);	1989	adjustheap (periodics, periodiccnt, active);
1543	}	1990	}
		1991
		1992	--periodiccnt;
		1993	}
1544		1994
1545	ev_stop (EV_A_ (W)w);	1995	ev_stop (EV_A_ (W)w);
1546	}	1996	}
1547		1997
1548	void	1998	void noinline
1549	ev_periodic_again (EV_P_ ev_periodic *w)	1999	ev_periodic_again (EV_P_ ev_periodic *w)
1550	{	2000	{
1551	/* TODO: use adjustheap and recalculation */	2001	/* TODO: use adjustheap and recalculation */
1552	ev_periodic_stop (EV_A_ w);	2002	ev_periodic_stop (EV_A_ w);
1553	ev_periodic_start (EV_A_ w);	2003	ev_periodic_start (EV_A_ w);
1554	}	2004	}
1555	#endif	2005	#endif
1556		2006
		2007	#ifndef SA_RESTART
		2008	# define SA_RESTART 0
		2009	#endif
		2010
		2011	void noinline
		2012	ev_signal_start (EV_P_ ev_signal *w)
		2013	{
		2014	#if EV_MULTIPLICITY
		2015	assert (("signal watchers are only supported in the default loop", loop == ev_default_loop_ptr));
		2016	#endif
		2017	if (expect_false (ev_is_active (w)))
		2018	return;
		2019
		2020	assert (("ev_signal_start called with illegal signal number", w->signum > 0));
		2021
		2022	evpipe_init (EV_A);
		2023
		2024	{
		2025	#ifndef _WIN32
		2026	sigset_t full, prev;
		2027	sigfillset (&full);
		2028	sigprocmask (SIG_SETMASK, &full, &prev);
		2029	#endif
		2030
		2031	array_needsize (ANSIG, signals, signalmax, w->signum, signals_init);
		2032
		2033	#ifndef _WIN32
		2034	sigprocmask (SIG_SETMASK, &prev, 0);
		2035	#endif
		2036	}
		2037
		2038	ev_start (EV_A_ (W)w, 1);
		2039	wlist_add (&signals [w->signum - 1].head, (WL)w);
		2040
		2041	if (!((WL)w)->next)
		2042	{
		2043	#if _WIN32
		2044	signal (w->signum, ev_sighandler);
		2045	#else
		2046	struct sigaction sa;
		2047	sa.sa_handler = ev_sighandler;
		2048	sigfillset (&sa.sa_mask);
		2049	sa.sa_flags = SA_RESTART; /* if restarting works we save one iteration */
		2050	sigaction (w->signum, &sa, 0);
		2051	#endif
		2052	}
		2053	}
		2054
		2055	void noinline
		2056	ev_signal_stop (EV_P_ ev_signal *w)
		2057	{
		2058	clear_pending (EV_A_ (W)w);
		2059	if (expect_false (!ev_is_active (w)))
		2060	return;
		2061
		2062	wlist_del (&signals [w->signum - 1].head, (WL)w);
		2063	ev_stop (EV_A_ (W)w);
		2064
		2065	if (!signals [w->signum - 1].head)
		2066	signal (w->signum, SIG_DFL);
		2067	}
		2068
		2069	void
		2070	ev_child_start (EV_P_ ev_child *w)
		2071	{
		2072	#if EV_MULTIPLICITY
		2073	assert (("child watchers are only supported in the default loop", loop == ev_default_loop_ptr));
		2074	#endif
		2075	if (expect_false (ev_is_active (w)))
		2076	return;
		2077
		2078	ev_start (EV_A_ (W)w, 1);
		2079	wlist_add (&childs [w->pid & (EV_PID_HASHSIZE - 1)], (WL)w);
		2080	}
		2081
		2082	void
		2083	ev_child_stop (EV_P_ ev_child *w)
		2084	{
		2085	clear_pending (EV_A_ (W)w);
		2086	if (expect_false (!ev_is_active (w)))
		2087	return;
		2088
		2089	wlist_del (&childs [w->pid & (EV_PID_HASHSIZE - 1)], (WL)w);
		2090	ev_stop (EV_A_ (W)w);
		2091	}
		2092
		2093	#if EV_STAT_ENABLE
		2094
		2095	# ifdef _WIN32
		2096	# undef lstat
		2097	# define lstat(a,b) _stati64 (a,b)
		2098	# endif
		2099
		2100	#define DEF_STAT_INTERVAL 5.0074891
		2101	#define MIN_STAT_INTERVAL 0.1074891
		2102
		2103	static void noinline stat_timer_cb (EV_P_ ev_timer *w_, int revents);
		2104
		2105	#if EV_USE_INOTIFY
		2106	# define EV_INOTIFY_BUFSIZE 8192
		2107
		2108	static void noinline
		2109	infy_add (EV_P_ ev_stat *w)
		2110	{
		2111	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);
		2112
		2113	if (w->wd < 0)
		2114	{
		2115	ev_timer_start (EV_A_ &w->timer); /* this is not race-free, so we still need to recheck periodically */
		2116
		2117	/* monitor some parent directory for speedup hints */
		2118	if ((errno == ENOENT || errno == EACCES) && strlen (w->path) < 4096)
		2119	{
		2120	char path [4096];
		2121	strcpy (path, w->path);
		2122
		2123	do
		2124	{
		2125	int mask = IN_MASK_ADD | IN_DELETE_SELF | IN_MOVE_SELF
		2126	| (errno == EACCES ? IN_ATTRIB : IN_CREATE | IN_MOVED_TO);
		2127
		2128	char *pend = strrchr (path, '/');
		2129
		2130	if (!pend)
		2131	break; /* whoops, no '/', complain to your admin */
		2132
		2133	*pend = 0;
		2134	w->wd = inotify_add_watch (fs_fd, path, mask);
		2135	}
		2136	while (w->wd < 0 && (errno == ENOENT || errno == EACCES));
		2137	}
		2138	}
		2139	else
		2140	ev_timer_stop (EV_A_ &w->timer); /* we can watch this in a race-free way */
		2141
		2142	if (w->wd >= 0)
		2143	wlist_add (&fs_hash [w->wd & (EV_INOTIFY_HASHSIZE - 1)].head, (WL)w);
		2144	}
		2145
		2146	static void noinline
		2147	infy_del (EV_P_ ev_stat *w)
		2148	{
		2149	int slot;
		2150	int wd = w->wd;
		2151
		2152	if (wd < 0)
		2153	return;
		2154
		2155	w->wd = -2;
		2156	slot = wd & (EV_INOTIFY_HASHSIZE - 1);
		2157	wlist_del (&fs_hash [slot].head, (WL)w);
		2158
		2159	/* remove this watcher, if others are watching it, they will rearm */
		2160	inotify_rm_watch (fs_fd, wd);
		2161	}
		2162
		2163	static void noinline
		2164	infy_wd (EV_P_ int slot, int wd, struct inotify_event *ev)
		2165	{
		2166	if (slot < 0)
		2167	/* overflow, need to check for all hahs slots */
		2168	for (slot = 0; slot < EV_INOTIFY_HASHSIZE; ++slot)
		2169	infy_wd (EV_A_ slot, wd, ev);
		2170	else
		2171	{
		2172	WL w_;
		2173
		2174	for (w_ = fs_hash [slot & (EV_INOTIFY_HASHSIZE - 1)].head; w_; )
		2175	{
		2176	ev_stat *w = (ev_stat *)w_;
		2177	w_ = w_->next; /* lets us remove this watcher and all before it */
		2178
		2179	if (w->wd == wd || wd == -1)
		2180	{
		2181	if (ev->mask & (IN_IGNORED | IN_UNMOUNT | IN_DELETE_SELF))
		2182	{
		2183	w->wd = -1;
		2184	infy_add (EV_A_ w); /* re-add, no matter what */
		2185	}
		2186
		2187	stat_timer_cb (EV_A_ &w->timer, 0);
		2188	}
		2189	}
		2190	}
		2191	}
		2192
		2193	static void
		2194	infy_cb (EV_P_ ev_io *w, int revents)
		2195	{
		2196	char buf [EV_INOTIFY_BUFSIZE];
		2197	struct inotify_event *ev = (struct inotify_event *)buf;
		2198	int ofs;
		2199	int len = read (fs_fd, buf, sizeof (buf));
		2200
		2201	for (ofs = 0; ofs < len; ofs += sizeof (struct inotify_event) + ev->len)
		2202	infy_wd (EV_A_ ev->wd, ev->wd, ev);
		2203	}
		2204
		2205	void inline_size
		2206	infy_init (EV_P)
		2207	{
		2208	if (fs_fd != -2)
		2209	return;
		2210
		2211	fs_fd = inotify_init ();
		2212
		2213	if (fs_fd >= 0)
		2214	{
		2215	ev_io_init (&fs_w, infy_cb, fs_fd, EV_READ);
		2216	ev_set_priority (&fs_w, EV_MAXPRI);
		2217	ev_io_start (EV_A_ &fs_w);
		2218	}
		2219	}
		2220
		2221	void inline_size
		2222	infy_fork (EV_P)
		2223	{
		2224	int slot;
		2225
		2226	if (fs_fd < 0)
		2227	return;
		2228
		2229	close (fs_fd);
		2230	fs_fd = inotify_init ();
		2231
		2232	for (slot = 0; slot < EV_INOTIFY_HASHSIZE; ++slot)
		2233	{
		2234	WL w_ = fs_hash [slot].head;
		2235	fs_hash [slot].head = 0;
		2236
		2237	while (w_)
		2238	{
		2239	ev_stat *w = (ev_stat *)w_;
		2240	w_ = w_->next; /* lets us add this watcher */
		2241
		2242	w->wd = -1;
		2243
		2244	if (fs_fd >= 0)
		2245	infy_add (EV_A_ w); /* re-add, no matter what */
		2246	else
		2247	ev_timer_start (EV_A_ &w->timer);
		2248	}
		2249
		2250	}
		2251	}
		2252
		2253	#endif
		2254
		2255	void
		2256	ev_stat_stat (EV_P_ ev_stat *w)
		2257	{
		2258	if (lstat (w->path, &w->attr) < 0)
		2259	w->attr.st_nlink = 0;
		2260	else if (!w->attr.st_nlink)
		2261	w->attr.st_nlink = 1;
		2262	}
		2263
		2264	static void noinline
		2265	stat_timer_cb (EV_P_ ev_timer *w_, int revents)
		2266	{
		2267	ev_stat *w = (ev_stat *)(((char *)w_) - offsetof (ev_stat, timer));
		2268
		2269	/* we copy this here each the time so that */
		2270	/* prev has the old value when the callback gets invoked */
		2271	w->prev = w->attr;
		2272	ev_stat_stat (EV_A_ w);
		2273
		2274	/* memcmp doesn't work on netbsd, they.... do stuff to their struct stat */
		2275	if (
		2276	w->prev.st_dev != w->attr.st_dev
		2277	|| w->prev.st_ino != w->attr.st_ino
		2278	|| w->prev.st_mode != w->attr.st_mode
		2279	|| w->prev.st_nlink != w->attr.st_nlink
		2280	|| w->prev.st_uid != w->attr.st_uid
		2281	|| w->prev.st_gid != w->attr.st_gid
		2282	|| w->prev.st_rdev != w->attr.st_rdev
		2283	|| w->prev.st_size != w->attr.st_size
		2284	|| w->prev.st_atime != w->attr.st_atime
		2285	|| w->prev.st_mtime != w->attr.st_mtime
		2286	|| w->prev.st_ctime != w->attr.st_ctime
		2287	) {
		2288	#if EV_USE_INOTIFY
		2289	infy_del (EV_A_ w);
		2290	infy_add (EV_A_ w);
		2291	ev_stat_stat (EV_A_ w); /* avoid race... */
		2292	#endif
		2293
		2294	ev_feed_event (EV_A_ w, EV_STAT);
		2295	}
		2296	}
		2297
		2298	void
		2299	ev_stat_start (EV_P_ ev_stat *w)
		2300	{
		2301	if (expect_false (ev_is_active (w)))
		2302	return;
		2303
		2304	/* since we use memcmp, we need to clear any padding data etc. */
		2305	memset (&w->prev, 0, sizeof (ev_statdata));
		2306	memset (&w->attr, 0, sizeof (ev_statdata));
		2307
		2308	ev_stat_stat (EV_A_ w);
		2309
		2310	if (w->interval < MIN_STAT_INTERVAL)
		2311	w->interval = w->interval ? MIN_STAT_INTERVAL : DEF_STAT_INTERVAL;
		2312
		2313	ev_timer_init (&w->timer, stat_timer_cb, w->interval, w->interval);
		2314	ev_set_priority (&w->timer, ev_priority (w));
		2315
		2316	#if EV_USE_INOTIFY
		2317	infy_init (EV_A);
		2318
		2319	if (fs_fd >= 0)
		2320	infy_add (EV_A_ w);
		2321	else
		2322	#endif
		2323	ev_timer_start (EV_A_ &w->timer);
		2324
		2325	ev_start (EV_A_ (W)w, 1);
		2326	}
		2327
		2328	void
		2329	ev_stat_stop (EV_P_ ev_stat *w)
		2330	{
		2331	clear_pending (EV_A_ (W)w);
		2332	if (expect_false (!ev_is_active (w)))
		2333	return;
		2334
		2335	#if EV_USE_INOTIFY
		2336	infy_del (EV_A_ w);
		2337	#endif
		2338	ev_timer_stop (EV_A_ &w->timer);
		2339
		2340	ev_stop (EV_A_ (W)w);
		2341	}
		2342	#endif
		2343
		2344	#if EV_IDLE_ENABLE
1557	void	2345	void
1558	ev_idle_start (EV_P_ ev_idle *w)	2346	ev_idle_start (EV_P_ ev_idle *w)
1559	{	2347	{
1560	if (expect_false (ev_is_active (w)))	2348	if (expect_false (ev_is_active (w)))
1561	return;	2349	return;
1562		2350
		2351	pri_adjust (EV_A_ (W)w);
		2352
		2353	{
		2354	int active = ++idlecnt [ABSPRI (w)];
		2355
		2356	++idleall;
1563	ev_start (EV_A_ (W)w, ++idlecnt);	2357	ev_start (EV_A_ (W)w, active);
		2358
1564	array_needsize (ev_idle *, idles, idlemax, idlecnt, EMPTY2);	2359	array_needsize (ev_idle *, idles [ABSPRI (w)], idlemax [ABSPRI (w)], active, EMPTY2);
1565	idles [idlecnt - 1] = w;	2360	idles [ABSPRI (w)][active - 1] = w;
		2361	}
1566	}	2362	}
1567		2363
1568	void	2364	void
1569	ev_idle_stop (EV_P_ ev_idle *w)	2365	ev_idle_stop (EV_P_ ev_idle *w)
1570	{	2366	{
1571	ev_clear_pending (EV_A_ (W)w);	2367	clear_pending (EV_A_ (W)w);
1572	if (expect_false (!ev_is_active (w)))	2368	if (expect_false (!ev_is_active (w)))
1573	return;	2369	return;
1574		2370
1575	{	2371	{
1576	int active = ((W)w)->active;	2372	int active = ((W)w)->active;
1577	idles [active - 1] = idles [--idlecnt];	2373
		2374	idles [ABSPRI (w)][active - 1] = idles [ABSPRI (w)][--idlecnt [ABSPRI (w)]];
1578	((W)idles [active - 1])->active = active;	2375	((W)idles [ABSPRI (w)][active - 1])->active = active;
		2376
		2377	ev_stop (EV_A_ (W)w);
		2378	--idleall;
1579	}	2379	}
1580
1581	ev_stop (EV_A_ (W)w);
1582	}	2380	}
		2381	#endif
1583		2382
1584	void	2383	void
1585	ev_prepare_start (EV_P_ ev_prepare *w)	2384	ev_prepare_start (EV_P_ ev_prepare *w)
1586	{	2385	{
1587	if (expect_false (ev_is_active (w)))	2386	if (expect_false (ev_is_active (w)))
…		…
1593	}	2392	}
1594		2393
1595	void	2394	void
1596	ev_prepare_stop (EV_P_ ev_prepare *w)	2395	ev_prepare_stop (EV_P_ ev_prepare *w)
1597	{	2396	{
1598	ev_clear_pending (EV_A_ (W)w);	2397	clear_pending (EV_A_ (W)w);
1599	if (expect_false (!ev_is_active (w)))	2398	if (expect_false (!ev_is_active (w)))
1600	return;	2399	return;
1601		2400
1602	{	2401	{
1603	int active = ((W)w)->active;	2402	int active = ((W)w)->active;
…		…
1620	}	2419	}
1621		2420
1622	void	2421	void
1623	ev_check_stop (EV_P_ ev_check *w)	2422	ev_check_stop (EV_P_ ev_check *w)
1624	{	2423	{
1625	ev_clear_pending (EV_A_ (W)w);	2424	clear_pending (EV_A_ (W)w);
1626	if (expect_false (!ev_is_active (w)))	2425	if (expect_false (!ev_is_active (w)))
1627	return;	2426	return;
1628		2427
1629	{	2428	{
1630	int active = ((W)w)->active;	2429	int active = ((W)w)->active;
…		…
1633	}	2432	}
1634		2433
1635	ev_stop (EV_A_ (W)w);	2434	ev_stop (EV_A_ (W)w);
1636	}	2435	}
1637		2436
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	2437	#if EV_EMBED_ENABLE
1710	void noinline	2438	void noinline
1711	ev_embed_sweep (EV_P_ ev_embed *w)	2439	ev_embed_sweep (EV_P_ ev_embed *w)
1712	{	2440	{
1713	ev_loop (w->loop, EVLOOP_NONBLOCK);	2441	ev_loop (w->other, EVLOOP_NONBLOCK);
1714	}	2442	}
1715		2443
1716	static void	2444	static void
1717	embed_cb (EV_P_ ev_io *io, int revents)	2445	embed_io_cb (EV_P_ ev_io *io, int revents)
1718	{	2446	{
1719	ev_embed *w = (ev_embed *)(((char *)io) - offsetof (ev_embed, io));	2447	ev_embed *w = (ev_embed *)(((char *)io) - offsetof (ev_embed, io));
1720		2448
1721	if (ev_cb (w))	2449	if (ev_cb (w))
1722	ev_feed_event (EV_A_ (W)w, EV_EMBED);	2450	ev_feed_event (EV_A_ (W)w, EV_EMBED);
1723	else	2451	else
1724	ev_embed_sweep (loop, w);	2452	ev_loop (w->other, EVLOOP_NONBLOCK);
1725	}	2453	}
		2454
		2455	static void
		2456	embed_prepare_cb (EV_P_ ev_prepare *prepare, int revents)
		2457	{
		2458	ev_embed *w = (ev_embed *)(((char *)prepare) - offsetof (ev_embed, prepare));
		2459
		2460	{
		2461	struct ev_loop *loop = w->other;
		2462
		2463	while (fdchangecnt)
		2464	{
		2465	fd_reify (EV_A);
		2466	ev_loop (EV_A_ EVLOOP_NONBLOCK);
		2467	}
		2468	}
		2469	}
		2470
		2471	#if 0
		2472	static void
		2473	embed_idle_cb (EV_P_ ev_idle *idle, int revents)
		2474	{
		2475	ev_idle_stop (EV_A_ idle);
		2476	}
		2477	#endif
1726		2478
1727	void	2479	void
1728	ev_embed_start (EV_P_ ev_embed *w)	2480	ev_embed_start (EV_P_ ev_embed *w)
1729	{	2481	{
1730	if (expect_false (ev_is_active (w)))	2482	if (expect_false (ev_is_active (w)))
1731	return;	2483	return;
1732		2484
1733	{	2485	{
1734	struct ev_loop *loop = w->loop;	2486	struct ev_loop *loop = w->other;
1735	assert (("loop to be embedded is not embeddable", backend & ev_embeddable_backends ()));	2487	assert (("loop to be embedded is not embeddable", backend & ev_embeddable_backends ()));
1736	ev_io_init (&w->io, embed_cb, backend_fd, EV_READ);	2488	ev_io_init (&w->io, embed_io_cb, backend_fd, EV_READ);
1737	}	2489	}
1738		2490
1739	ev_set_priority (&w->io, ev_priority (w));	2491	ev_set_priority (&w->io, ev_priority (w));
1740	ev_io_start (EV_A_ &w->io);	2492	ev_io_start (EV_A_ &w->io);
1741		2493
		2494	ev_prepare_init (&w->prepare, embed_prepare_cb);
		2495	ev_set_priority (&w->prepare, EV_MINPRI);
		2496	ev_prepare_start (EV_A_ &w->prepare);
		2497
		2498	/*ev_idle_init (&w->idle, e,bed_idle_cb);*/
		2499
1742	ev_start (EV_A_ (W)w, 1);	2500	ev_start (EV_A_ (W)w, 1);
1743	}	2501	}
1744		2502
1745	void	2503	void
1746	ev_embed_stop (EV_P_ ev_embed *w)	2504	ev_embed_stop (EV_P_ ev_embed *w)
1747	{	2505	{
1748	ev_clear_pending (EV_A_ (W)w);	2506	clear_pending (EV_A_ (W)w);
1749	if (expect_false (!ev_is_active (w)))	2507	if (expect_false (!ev_is_active (w)))
1750	return;	2508	return;
1751		2509
1752	ev_io_stop (EV_A_ &w->io);	2510	ev_io_stop (EV_A_ &w->io);
		2511	ev_prepare_stop (EV_A_ &w->prepare);
1753		2512
1754	ev_stop (EV_A_ (W)w);	2513	ev_stop (EV_A_ (W)w);
1755	}	2514	}
1756	#endif	2515	#endif
1757		2516
1758	#if EV_STAT_ENABLE	2517	#if EV_FORK_ENABLE
1759
1760	# ifdef _WIN32
1761	# define lstat(a,b) stat(a,b)
1762	# endif
1763
1764	void	2518	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)	2519	ev_fork_start (EV_P_ ev_fork *w)
1789	{	2520	{
1790	if (expect_false (ev_is_active (w)))	2521	if (expect_false (ev_is_active (w)))
1791	return;	2522	return;
1792		2523
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);	2524	ev_start (EV_A_ (W)w, ++forkcnt);
		2525	array_needsize (ev_fork *, forks, forkmax, forkcnt, EMPTY2);
		2526	forks [forkcnt - 1] = w;
1804	}	2527	}
1805		2528
1806	void	2529	void
1807	ev_stat_stop (EV_P_ ev_stat *w)	2530	ev_fork_stop (EV_P_ ev_fork *w)
1808	{	2531	{
1809	ev_clear_pending (EV_A_ (W)w);	2532	clear_pending (EV_A_ (W)w);
1810	if (expect_false (!ev_is_active (w)))	2533	if (expect_false (!ev_is_active (w)))
1811	return;	2534	return;
1812		2535
1813	ev_timer_stop (EV_A_ &w->timer);	2536	{
		2537	int active = ((W)w)->active;
		2538	forks [active - 1] = forks [--forkcnt];
		2539	((W)forks [active - 1])->active = active;
		2540	}
1814		2541
1815	ev_stop (EV_A_ (W)w);	2542	ev_stop (EV_A_ (W)w);
		2543	}
		2544	#endif
		2545
		2546	#if EV_ASYNC_ENABLE
		2547	void
		2548	ev_async_start (EV_P_ ev_async *w)
		2549	{
		2550	if (expect_false (ev_is_active (w)))
		2551	return;
		2552
		2553	evpipe_init (EV_A);
		2554
		2555	ev_start (EV_A_ (W)w, ++asynccnt);
		2556	array_needsize (ev_async *, asyncs, asyncmax, asynccnt, EMPTY2);
		2557	asyncs [asynccnt - 1] = w;
		2558	}
		2559
		2560	void
		2561	ev_async_stop (EV_P_ ev_async *w)
		2562	{
		2563	clear_pending (EV_A_ (W)w);
		2564	if (expect_false (!ev_is_active (w)))
		2565	return;
		2566
		2567	{
		2568	int active = ((W)w)->active;
		2569	asyncs [active - 1] = asyncs [--asynccnt];
		2570	((W)asyncs [active - 1])->active = active;
		2571	}
		2572
		2573	ev_stop (EV_A_ (W)w);
		2574	}
		2575
		2576	void
		2577	ev_async_send (EV_P_ ev_async *w)
		2578	{
		2579	w->sent = 1;
		2580	evpipe_write (EV_A_ &gotasync);
1816	}	2581	}
1817	#endif	2582	#endif
1818		2583
1819	/*****************************************************************************/	2584	/*****************************************************************************/
1820		2585
…		…
1878	ev_timer_set (&once->to, timeout, 0.);	2643	ev_timer_set (&once->to, timeout, 0.);
1879	ev_timer_start (EV_A_ &once->to);	2644	ev_timer_start (EV_A_ &once->to);
1880	}	2645	}
1881	}	2646	}
1882		2647
		2648	#if EV_MULTIPLICITY
		2649	#include "ev_wrap.h"
		2650	#endif
		2651
1883	#ifdef __cplusplus	2652	#ifdef __cplusplus
1884	}	2653	}
1885	#endif	2654	#endif
1886		2655

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