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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 1.229 by root, Fri May 2 08:08:45 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_active(w) ((W)(w))->active
		331	#define ev_at(w) ((WT)(w))->at
		332
		333	#if EV_USE_MONOTONIC
		334	/* sig_atomic_t is used to avoid per-thread variables or locking but still */
		335	/* giving it a reasonably high chance of working on typical architetcures */
220	static int have_monotonic; /* did clock_gettime (CLOCK_MONOTONIC) work? */	336	static EV_ATOMIC_T have_monotonic; /* did clock_gettime (CLOCK_MONOTONIC) work? */
		337	#endif
221		338
222	#ifdef _WIN32	339	#ifdef _WIN32
223	# include "ev_win32.c"	340	# include "ev_win32.c"
224	#endif	341	#endif
225		342
226	/*****************************************************************************/	343	/*****************************************************************************/
227		344
228	static void (*syserr_cb)(const char *msg);	345	static void (*syserr_cb)(const char *msg);
229		346
		347	void
230	void ev_set_syserr_cb (void (*cb)(const char *msg))	348	ev_set_syserr_cb (void (*cb)(const char *msg))
231	{	349	{
232	syserr_cb = cb;	350	syserr_cb = cb;
233	}	351	}
234		352
235	static void	353	static void noinline
236	syserr (const char *msg)	354	syserr (const char *msg)
237	{	355	{
238	if (!msg)	356	if (!msg)
239	msg = "(libev) system error";	357	msg = "(libev) system error";
240		358
…		…
245	perror (msg);	363	perror (msg);
246	abort ();	364	abort ();
247	}	365	}
248	}	366	}
249		367
		368	static void *
		369	ev_realloc_emul (void *ptr, long size)
		370	{
		371	/* some systems, notably openbsd and darwin, fail to properly
		372	* implement realloc (x, 0) (as required by both ansi c-98 and
		373	* the single unix specification, so work around them here.
		374	*/
		375
		376	if (size)
		377	return realloc (ptr, size);
		378
		379	free (ptr);
		380	return 0;
		381	}
		382
250	static void *(*alloc)(void *ptr, long size);	383	static void *(*alloc)(void *ptr, long size) = ev_realloc_emul;
251		384
		385	void
252	void ev_set_allocator (void *(*cb)(void *ptr, long size))	386	ev_set_allocator (void *(*cb)(void *ptr, long size))
253	{	387	{
254	alloc = cb;	388	alloc = cb;
255	}	389	}
256		390
257	static void *	391	inline_speed void *
258	ev_realloc (void *ptr, long size)	392	ev_realloc (void *ptr, long size)
259	{	393	{
260	ptr = alloc ? alloc (ptr, size) : realloc (ptr, size);	394	ptr = alloc (ptr, size);
261		395
262	if (!ptr && size)	396	if (!ptr && size)
263	{	397	{
264	fprintf (stderr, "libev: cannot allocate %ld bytes, aborting.", size);	398	fprintf (stderr, "libev: cannot allocate %ld bytes, aborting.", size);
265	abort ();	399	abort ();
…		…
286	typedef struct	420	typedef struct
287	{	421	{
288	W w;	422	W w;
289	int events;	423	int events;
290	} ANPENDING;	424	} ANPENDING;
		425
		426	#if EV_USE_INOTIFY
		427	typedef struct
		428	{
		429	WL head;
		430	} ANFS;
		431	#endif
291		432
292	#if EV_MULTIPLICITY	433	#if EV_MULTIPLICITY
293		434
294	struct ev_loop	435	struct ev_loop
295	{	436	{
…		…
315		456
316	#endif	457	#endif
317		458
318	/*****************************************************************************/	459	/*****************************************************************************/
319		460
320	ev_tstamp noinline	461	ev_tstamp
321	ev_time (void)	462	ev_time (void)
322	{	463	{
323	#if EV_USE_REALTIME	464	#if EV_USE_REALTIME
324	struct timespec ts;	465	struct timespec ts;
325	clock_gettime (CLOCK_REALTIME, &ts);	466	clock_gettime (CLOCK_REALTIME, &ts);
…		…
352	{	493	{
353	return ev_rt_now;	494	return ev_rt_now;
354	}	495	}
355	#endif	496	#endif
356		497
357	#define array_roundsize(type,n) (((n) | 4) & ~3)	498	void
		499	ev_sleep (ev_tstamp delay)
		500	{
		501	if (delay > 0.)
		502	{
		503	#if EV_USE_NANOSLEEP
		504	struct timespec ts;
		505
		506	ts.tv_sec = (time_t)delay;
		507	ts.tv_nsec = (long)((delay - (ev_tstamp)(ts.tv_sec)) * 1e9);
		508
		509	nanosleep (&ts, 0);
		510	#elif defined(_WIN32)
		511	Sleep ((unsigned long)(delay * 1e3));
		512	#else
		513	struct timeval tv;
		514
		515	tv.tv_sec = (time_t)delay;
		516	tv.tv_usec = (long)((delay - (ev_tstamp)(tv.tv_sec)) * 1e6);
		517
		518	select (0, 0, 0, 0, &tv);
		519	#endif
		520	}
		521	}
		522
		523	/*****************************************************************************/
		524
		525	int inline_size
		526	array_nextsize (int elem, int cur, int cnt)
		527	{
		528	int ncur = cur + 1;
		529
		530	do
		531	ncur <<= 1;
		532	while (cnt > ncur);
		533
		534	/* if size > 4096, round to 4096 - 4 * longs to accomodate malloc overhead */
		535	if (elem * ncur > 4096)
		536	{
		537	ncur *= elem;
		538	ncur = (ncur + elem + 4095 + sizeof (void *) * 4) & ~4095;
		539	ncur = ncur - sizeof (void *) * 4;
		540	ncur /= elem;
		541	}
		542
		543	return ncur;
		544	}
		545
		546	static noinline void *
		547	array_realloc (int elem, void *base, int *cur, int cnt)
		548	{
		549	*cur = array_nextsize (elem, *cur, cnt);
		550	return ev_realloc (base, elem * *cur);
		551	}
358		552
359	#define array_needsize(type,base,cur,cnt,init) \	553	#define array_needsize(type,base,cur,cnt,init) \
360	if (expect_false ((cnt) > cur)) \	554	if (expect_false ((cnt) > (cur))) \
361	{ \	555	{ \
362	int newcnt = cur; \	556	int ocur_ = (cur); \
363	do \	557	(base) = (type *)array_realloc \
364	{ \	558	(sizeof (type), (base), &(cur), (cnt)); \
365	newcnt = array_roundsize (type, newcnt << 1); \	559	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	}	560	}
373		561
		562	#if 0
374	#define array_slim(type,stem) \	563	#define array_slim(type,stem) \
375	if (stem ## max < array_roundsize (stem ## cnt >> 2)) \	564	if (stem ## max < array_roundsize (stem ## cnt >> 2)) \
376	{ \	565	{ \
377	stem ## max = array_roundsize (stem ## cnt >> 1); \	566	stem ## max = array_roundsize (stem ## cnt >> 1); \
378	base = (type *)ev_realloc (base, sizeof (type) * (stem ## max));\	567	base = (type *)ev_realloc (base, sizeof (type) * (stem ## max));\
379	fprintf (stderr, "slimmed down " # stem " to %d\n", stem ## max);/*D*/\	568	fprintf (stderr, "slimmed down " # stem " to %d\n", stem ## max);/*D*/\
380	}	569	}
		570	#endif
381		571
382	#define array_free(stem, idx) \	572	#define array_free(stem, idx) \
383	ev_free (stem ## s idx); stem ## cnt idx = stem ## max idx = 0;	573	ev_free (stem ## s idx); stem ## cnt idx = stem ## max idx = 0;
		574
		575	/*****************************************************************************/
		576
		577	void noinline
		578	ev_feed_event (EV_P_ void *w, int revents)
		579	{
		580	W w_ = (W)w;
		581	int pri = ABSPRI (w_);
		582
		583	if (expect_false (w_->pending))
		584	pendings [pri][w_->pending - 1].events |= revents;
		585	else
		586	{
		587	w_->pending = ++pendingcnt [pri];
		588	array_needsize (ANPENDING, pendings [pri], pendingmax [pri], w_->pending, EMPTY2);
		589	pendings [pri][w_->pending - 1].w = w_;
		590	pendings [pri][w_->pending - 1].events = revents;
		591	}
		592	}
		593
		594	void inline_speed
		595	queue_events (EV_P_ W *events, int eventcnt, int type)
		596	{
		597	int i;
		598
		599	for (i = 0; i < eventcnt; ++i)
		600	ev_feed_event (EV_A_ events [i], type);
		601	}
384		602
385	/*****************************************************************************/	603	/*****************************************************************************/
386		604
387	void inline_size	605	void inline_size
388	anfds_init (ANFD *base, int count)	606	anfds_init (ANFD *base, int count)
…		…
395		613
396	++base;	614	++base;
397	}	615	}
398	}	616	}
399		617
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	618	void inline_speed
427	fd_event (EV_P_ int fd, int revents)	619	fd_event (EV_P_ int fd, int revents)
428	{	620	{
429	ANFD *anfd = anfds + fd;	621	ANFD *anfd = anfds + fd;
430	ev_io *w;	622	ev_io *w;
…		…
439	}	631	}
440		632
441	void	633	void
442	ev_feed_fd_event (EV_P_ int fd, int revents)	634	ev_feed_fd_event (EV_P_ int fd, int revents)
443	{	635	{
		636	if (fd >= 0 && fd < anfdmax)
444	fd_event (EV_A_ fd, revents);	637	fd_event (EV_A_ fd, revents);
445	}	638	}
446
447	/*****************************************************************************/
448		639
449	void inline_size	640	void inline_size
450	fd_reify (EV_P)	641	fd_reify (EV_P)
451	{	642	{
452	int i;	643	int i;
…		…
455	{	646	{
456	int fd = fdchanges [i];	647	int fd = fdchanges [i];
457	ANFD *anfd = anfds + fd;	648	ANFD *anfd = anfds + fd;
458	ev_io *w;	649	ev_io *w;
459		650
460	int events = 0;	651	unsigned char events = 0;
461		652
462	for (w = (ev_io *)anfd->head; w; w = (ev_io *)((WL)w)->next)	653	for (w = (ev_io *)anfd->head; w; w = (ev_io *)((WL)w)->next)
463	events |= w->events;	654	events |= (unsigned char)w->events;
464		655
465	#if EV_SELECT_IS_WINSOCKET	656	#if EV_SELECT_IS_WINSOCKET
466	if (events)	657	if (events)
467	{	658	{
468	unsigned long argp;	659	unsigned long argp;
		660	#ifdef EV_FD_TO_WIN32_HANDLE
		661	anfd->handle = EV_FD_TO_WIN32_HANDLE (fd);
		662	#else
469	anfd->handle = _get_osfhandle (fd);	663	anfd->handle = _get_osfhandle (fd);
		664	#endif
470	assert (("libev only supports socket fds in this configuration", ioctlsocket (anfd->handle, FIONREAD, &argp) == 0));	665	assert (("libev only supports socket fds in this configuration", ioctlsocket (anfd->handle, FIONREAD, &argp) == 0));
471	}	666	}
472	#endif	667	#endif
473		668
		669	{
		670	unsigned char o_events = anfd->events;
		671	unsigned char o_reify = anfd->reify;
		672
474	anfd->reify = 0;	673	anfd->reify = 0;
475
476	backend_modify (EV_A_ fd, anfd->events, events);
477	anfd->events = events;	674	anfd->events = events;
		675
		676	if (o_events != events || o_reify & EV_IOFDSET)
		677	backend_modify (EV_A_ fd, o_events, events);
		678	}
478	}	679	}
479		680
480	fdchangecnt = 0;	681	fdchangecnt = 0;
481	}	682	}
482		683
483	void inline_size	684	void inline_size
484	fd_change (EV_P_ int fd)	685	fd_change (EV_P_ int fd, int flags)
485	{	686	{
486	if (expect_false (anfds [fd].reify))	687	unsigned char reify = anfds [fd].reify;
487	return;
488
489	anfds [fd].reify = 1;	688	anfds [fd].reify |= flags;
490		689
		690	if (expect_true (!reify))
		691	{
491	++fdchangecnt;	692	++fdchangecnt;
492	array_needsize (int, fdchanges, fdchangemax, fdchangecnt, EMPTY2);	693	array_needsize (int, fdchanges, fdchangemax, fdchangecnt, EMPTY2);
493	fdchanges [fdchangecnt - 1] = fd;	694	fdchanges [fdchangecnt - 1] = fd;
		695	}
494	}	696	}
495		697
496	void inline_speed	698	void inline_speed
497	fd_kill (EV_P_ int fd)	699	fd_kill (EV_P_ int fd)
498	{	700	{
…		…
545	static void noinline	747	static void noinline
546	fd_rearm_all (EV_P)	748	fd_rearm_all (EV_P)
547	{	749	{
548	int fd;	750	int fd;
549		751
550	/* this should be highly optimised to not do anything but set a flag */
551	for (fd = 0; fd < anfdmax; ++fd)	752	for (fd = 0; fd < anfdmax; ++fd)
552	if (anfds [fd].events)	753	if (anfds [fd].events)
553	{	754	{
554	anfds [fd].events = 0;	755	anfds [fd].events = 0;
555	fd_change (EV_A_ fd);	756	fd_change (EV_A_ fd, EV_IOFDSET | 1);
556	}	757	}
557	}	758	}
558		759
559	/*****************************************************************************/	760	/*****************************************************************************/
560		761
		762	/* towards the root */
561	void inline_speed	763	void inline_speed
562	upheap (WT *heap, int k)	764	upheap (WT *heap, int k)
563	{	765	{
564	WT w = heap [k];	766	WT w = heap [k];
565		767
566	while (k && heap [k >> 1]->at > w->at)	768	for (;;)
567	{	769	{
		770	int p = k >> 1;
		771
		772	/* maybe we could use a dummy element at heap [0]? */
		773	if (!p || heap [p]->at <= w->at)
		774	break;
		775
568	heap [k] = heap [k >> 1];	776	heap [k] = heap [p];
569	((W)heap [k])->active = k + 1;	777	((W)heap [k])->active = k;
570	k >>= 1;	778	k = p;
571	}	779	}
572		780
573	heap [k] = w;	781	heap [k] = w;
574	((W)heap [k])->active = k + 1;	782	((W)heap [k])->active = k;
575
576	}	783	}
577		784
		785	/* away from the root */
578	void inline_speed	786	void inline_speed
579	downheap (WT *heap, int N, int k)	787	downheap (WT *heap, int N, int k)
580	{	788	{
581	WT w = heap [k];	789	WT w = heap [k];
582		790
583	while (k < (N >> 1))	791	for (;;)
584	{	792	{
585	int j = k << 1;	793	int c = k << 1;
586		794
587	if (j + 1 < N && heap [j]->at > heap [j + 1]->at)	795	if (c > N)
588	++j;
589
590	if (w->at <= heap [j]->at)
591	break;	796	break;
592		797
		798	c += c < N && heap [c]->at > heap [c + 1]->at
		799	? 1 : 0;
		800
		801	if (w->at <= heap [c]->at)
		802	break;
		803
593	heap [k] = heap [j];	804	heap [k] = heap [c];
594	((W)heap [k])->active = k + 1;	805	((W)heap [k])->active = k;
		806
595	k = j;	807	k = c;
596	}	808	}
597		809
598	heap [k] = w;	810	heap [k] = w;
599	((W)heap [k])->active = k + 1;	811	((W)heap [k])->active = k;
600	}	812	}
601		813
602	void inline_size	814	void inline_size
603	adjustheap (WT *heap, int N, int k)	815	adjustheap (WT *heap, int N, int k)
604	{	816	{
…		…
609	/*****************************************************************************/	821	/*****************************************************************************/
610		822
611	typedef struct	823	typedef struct
612	{	824	{
613	WL head;	825	WL head;
614	sig_atomic_t volatile gotsig;	826	EV_ATOMIC_T gotsig;
615	} ANSIG;	827	} ANSIG;
616		828
617	static ANSIG *signals;	829	static ANSIG *signals;
618	static int signalmax;	830	static int signalmax;
619		831
620	static int sigpipe [2];	832	static EV_ATOMIC_T gotsig;
621	static sig_atomic_t volatile gotsig;
622	static ev_io sigev;
623		833
624	void inline_size	834	void inline_size
625	signals_init (ANSIG *base, int count)	835	signals_init (ANSIG *base, int count)
626	{	836	{
627	while (count--)	837	while (count--)
…		…
631		841
632	++base;	842	++base;
633	}	843	}
634	}	844	}
635		845
636	static void	846	/*****************************************************************************/
637	sighandler (int signum)
638	{
639	#if _WIN32
640	signal (signum, sighandler);
641	#endif
642		847
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	848	void inline_speed
688	fd_intern (int fd)	849	fd_intern (int fd)
689	{	850	{
690	#ifdef _WIN32	851	#ifdef _WIN32
691	int arg = 1;	852	int arg = 1;
692	ioctlsocket (_get_osfhandle (fd), FIONBIO, &arg);	853	ioctlsocket (_get_osfhandle (fd), FIONBIO, &arg);
…		…
695	fcntl (fd, F_SETFL, O_NONBLOCK);	856	fcntl (fd, F_SETFL, O_NONBLOCK);
696	#endif	857	#endif
697	}	858	}
698		859
699	static void noinline	860	static void noinline
700	siginit (EV_P)	861	evpipe_init (EV_P)
701	{	862	{
		863	if (!ev_is_active (&pipeev))
		864	{
		865	#if EV_USE_EVENTFD
		866	if ((evfd = eventfd (0, 0)) >= 0)
		867	{
		868	evpipe [0] = -1;
		869	fd_intern (evfd);
		870	ev_io_set (&pipeev, evfd, EV_READ);
		871	}
		872	else
		873	#endif
		874	{
		875	while (pipe (evpipe))
		876	syserr ("(libev) error creating signal/async pipe");
		877
702	fd_intern (sigpipe [0]);	878	fd_intern (evpipe [0]);
703	fd_intern (sigpipe [1]);	879	fd_intern (evpipe [1]);
		880	ev_io_set (&pipeev, evpipe [0], EV_READ);
		881	}
704		882
705	ev_io_set (&sigev, sigpipe [0], EV_READ);
706	ev_io_start (EV_A_ &sigev);	883	ev_io_start (EV_A_ &pipeev);
707	ev_unref (EV_A); /* child watcher should not keep loop alive */	884	ev_unref (EV_A); /* watcher should not keep loop alive */
		885	}
		886	}
		887
		888	void inline_size
		889	evpipe_write (EV_P_ EV_ATOMIC_T *flag)
		890	{
		891	if (!*flag)
		892	{
		893	int old_errno = errno; /* save errno because write might clobber it */
		894
		895	*flag = 1;
		896
		897	#if EV_USE_EVENTFD
		898	if (evfd >= 0)
		899	{
		900	uint64_t counter = 1;
		901	write (evfd, &counter, sizeof (uint64_t));
		902	}
		903	else
		904	#endif
		905	write (evpipe [1], &old_errno, 1);
		906
		907	errno = old_errno;
		908	}
		909	}
		910
		911	static void
		912	pipecb (EV_P_ ev_io *iow, int revents)
		913	{
		914	#if EV_USE_EVENTFD
		915	if (evfd >= 0)
		916	{
		917	uint64_t counter = 1;
		918	read (evfd, &counter, sizeof (uint64_t));
		919	}
		920	else
		921	#endif
		922	{
		923	char dummy;
		924	read (evpipe [0], &dummy, 1);
		925	}
		926
		927	if (gotsig && ev_is_default_loop (EV_A))
		928	{
		929	int signum;
		930	gotsig = 0;
		931
		932	for (signum = signalmax; signum--; )
		933	if (signals [signum].gotsig)
		934	ev_feed_signal_event (EV_A_ signum + 1);
		935	}
		936
		937	#if EV_ASYNC_ENABLE
		938	if (gotasync)
		939	{
		940	int i;
		941	gotasync = 0;
		942
		943	for (i = asynccnt; i--; )
		944	if (asyncs [i]->sent)
		945	{
		946	asyncs [i]->sent = 0;
		947	ev_feed_event (EV_A_ asyncs [i], EV_ASYNC);
		948	}
		949	}
		950	#endif
708	}	951	}
709		952
710	/*****************************************************************************/	953	/*****************************************************************************/
711		954
		955	static void
		956	ev_sighandler (int signum)
		957	{
		958	#if EV_MULTIPLICITY
		959	struct ev_loop *loop = &default_loop_struct;
		960	#endif
		961
		962	#if _WIN32
		963	signal (signum, ev_sighandler);
		964	#endif
		965
		966	signals [signum - 1].gotsig = 1;
		967	evpipe_write (EV_A_ &gotsig);
		968	}
		969
		970	void noinline
		971	ev_feed_signal_event (EV_P_ int signum)
		972	{
		973	WL w;
		974
		975	#if EV_MULTIPLICITY
		976	assert (("feeding signal events is only supported in the default loop", loop == ev_default_loop_ptr));
		977	#endif
		978
		979	--signum;
		980
		981	if (signum < 0 || signum >= signalmax)
		982	return;
		983
		984	signals [signum].gotsig = 0;
		985
		986	for (w = signals [signum].head; w; w = w->next)
		987	ev_feed_event (EV_A_ (W)w, EV_SIGNAL);
		988	}
		989
		990	/*****************************************************************************/
		991
712	static ev_child *childs [PID_HASHSIZE];	992	static WL childs [EV_PID_HASHSIZE];
713		993
714	#ifndef _WIN32	994	#ifndef _WIN32
715		995
716	static ev_signal childev;	996	static ev_signal childev;
		997
		998	#ifndef WIFCONTINUED
		999	# define WIFCONTINUED(status) 0
		1000	#endif
		1001
		1002	void inline_speed
		1003	child_reap (EV_P_ int chain, int pid, int status)
		1004	{
		1005	ev_child *w;
		1006	int traced = WIFSTOPPED (status) || WIFCONTINUED (status);
		1007
		1008	for (w = (ev_child *)childs [chain & (EV_PID_HASHSIZE - 1)]; w; w = (ev_child *)((WL)w)->next)
		1009	{
		1010	if ((w->pid == pid || !w->pid)
		1011	&& (!traced || (w->flags & 1)))
		1012	{
		1013	ev_set_priority (w, EV_MAXPRI); /* need to do it *now*, this *must* be the same prio as the signal watcher itself */
		1014	w->rpid = pid;
		1015	w->rstatus = status;
		1016	ev_feed_event (EV_A_ (W)w, EV_CHILD);
		1017	}
		1018	}
		1019	}
717		1020
718	#ifndef WCONTINUED	1021	#ifndef WCONTINUED
719	# define WCONTINUED 0	1022	# define WCONTINUED 0
720	#endif	1023	#endif
721		1024
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	1025	static void
738	childcb (EV_P_ ev_signal *sw, int revents)	1026	childcb (EV_P_ ev_signal *sw, int revents)
739	{	1027	{
740	int pid, status;	1028	int pid, status;
741		1029
		1030	/* some systems define WCONTINUED but then fail to support it (linux 2.4) */
742	if (0 < (pid = waitpid (-1, &status, WNOHANG | WUNTRACED | WCONTINUED)))	1031	if (0 >= (pid = waitpid (-1, &status, WNOHANG | WUNTRACED | WCONTINUED)))
743	{	1032	if (!WCONTINUED
		1033	|| errno != EINVAL
		1034	|| 0 >= (pid = waitpid (-1, &status, WNOHANG | WUNTRACED)))
		1035	return;
		1036
744	/* make sure we are called again until all childs have been reaped */	1037	/* 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 */	1038	/* 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);	1039	ev_feed_event (EV_A_ (W)sw, EV_SIGNAL);
747		1040
748	child_reap (EV_A_ sw, pid, pid, status);	1041	child_reap (EV_A_ pid, pid, status);
		1042	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 */	1043	child_reap (EV_A_ 0, pid, status); /* this might trigger a watcher twice, but feed_event catches that */
750	}
751	}	1044	}
752		1045
753	#endif	1046	#endif
754		1047
755	/*****************************************************************************/	1048	/*****************************************************************************/
…		…
827	}	1120	}
828		1121
829	unsigned int	1122	unsigned int
830	ev_embeddable_backends (void)	1123	ev_embeddable_backends (void)
831	{	1124	{
832	return EVBACKEND_EPOLL	1125	int flags = EVBACKEND_EPOLL | EVBACKEND_KQUEUE | EVBACKEND_PORT;
833	| EVBACKEND_KQUEUE	1126
834	| EVBACKEND_PORT;	1127	/* epoll embeddability broken on all linux versions up to at least 2.6.23 */
		1128	/* please fix it and tell me how to detect the fix */
		1129	flags &= ~EVBACKEND_EPOLL;
		1130
		1131	return flags;
835	}	1132	}
836		1133
837	unsigned int	1134	unsigned int
838	ev_backend (EV_P)	1135	ev_backend (EV_P)
839	{	1136	{
840	return backend;	1137	return backend;
841	}	1138	}
842		1139
843	static void	1140	unsigned int
		1141	ev_loop_count (EV_P)
		1142	{
		1143	return loop_count;
		1144	}
		1145
		1146	void
		1147	ev_set_io_collect_interval (EV_P_ ev_tstamp interval)
		1148	{
		1149	io_blocktime = interval;
		1150	}
		1151
		1152	void
		1153	ev_set_timeout_collect_interval (EV_P_ ev_tstamp interval)
		1154	{
		1155	timeout_blocktime = interval;
		1156	}
		1157
		1158	static void noinline
844	loop_init (EV_P_ unsigned int flags)	1159	loop_init (EV_P_ unsigned int flags)
845	{	1160	{
846	if (!backend)	1161	if (!backend)
847	{	1162	{
848	#if EV_USE_MONOTONIC	1163	#if EV_USE_MONOTONIC
…		…
851	if (!clock_gettime (CLOCK_MONOTONIC, &ts))	1166	if (!clock_gettime (CLOCK_MONOTONIC, &ts))
852	have_monotonic = 1;	1167	have_monotonic = 1;
853	}	1168	}
854	#endif	1169	#endif
855		1170
856	ev_rt_now = ev_time ();	1171	ev_rt_now = ev_time ();
857	mn_now = get_clock ();	1172	mn_now = get_clock ();
858	now_floor = mn_now;	1173	now_floor = mn_now;
859	rtmn_diff = ev_rt_now - mn_now;	1174	rtmn_diff = ev_rt_now - mn_now;
		1175
		1176	io_blocktime = 0.;
		1177	timeout_blocktime = 0.;
		1178	backend = 0;
		1179	backend_fd = -1;
		1180	gotasync = 0;
		1181	#if EV_USE_INOTIFY
		1182	fs_fd = -2;
		1183	#endif
		1184
		1185	/* pid check not overridable via env */
		1186	#ifndef _WIN32
		1187	if (flags & EVFLAG_FORKCHECK)
		1188	curpid = getpid ();
		1189	#endif
860		1190
861	if (!(flags & EVFLAG_NOENV)	1191	if (!(flags & EVFLAG_NOENV)
862	&& !enable_secure ()	1192	&& !enable_secure ()
863	&& getenv ("LIBEV_FLAGS"))	1193	&& getenv ("LIBEV_FLAGS"))
864	flags = atoi (getenv ("LIBEV_FLAGS"));	1194	flags = atoi (getenv ("LIBEV_FLAGS"));
865		1195
866	if (!(flags & 0x0000ffffUL))	1196	if (!(flags & 0x0000ffffU))
867	flags |= ev_recommended_backends ();	1197	flags |= ev_recommended_backends ();
868		1198
869	backend = 0;
870	#if EV_USE_PORT	1199	#if EV_USE_PORT
871	if (!backend && (flags & EVBACKEND_PORT )) backend = port_init (EV_A_ flags);	1200	if (!backend && (flags & EVBACKEND_PORT )) backend = port_init (EV_A_ flags);
872	#endif	1201	#endif
873	#if EV_USE_KQUEUE	1202	#if EV_USE_KQUEUE
874	if (!backend && (flags & EVBACKEND_KQUEUE)) backend = kqueue_init (EV_A_ flags);	1203	if (!backend && (flags & EVBACKEND_KQUEUE)) backend = kqueue_init (EV_A_ flags);
…		…
881	#endif	1210	#endif
882	#if EV_USE_SELECT	1211	#if EV_USE_SELECT
883	if (!backend && (flags & EVBACKEND_SELECT)) backend = select_init (EV_A_ flags);	1212	if (!backend && (flags & EVBACKEND_SELECT)) backend = select_init (EV_A_ flags);
884	#endif	1213	#endif
885		1214
886	ev_init (&sigev, sigcb);	1215	ev_init (&pipeev, pipecb);
887	ev_set_priority (&sigev, EV_MAXPRI);	1216	ev_set_priority (&pipeev, EV_MAXPRI);
888	}	1217	}
889	}	1218	}
890		1219
891	static void	1220	static void noinline
892	loop_destroy (EV_P)	1221	loop_destroy (EV_P)
893	{	1222	{
894	int i;	1223	int i;
		1224
		1225	if (ev_is_active (&pipeev))
		1226	{
		1227	ev_ref (EV_A); /* signal watcher */
		1228	ev_io_stop (EV_A_ &pipeev);
		1229
		1230	#if EV_USE_EVENTFD
		1231	if (evfd >= 0)
		1232	close (evfd);
		1233	#endif
		1234
		1235	if (evpipe [0] >= 0)
		1236	{
		1237	close (evpipe [0]);
		1238	close (evpipe [1]);
		1239	}
		1240	}
		1241
		1242	#if EV_USE_INOTIFY
		1243	if (fs_fd >= 0)
		1244	close (fs_fd);
		1245	#endif
		1246
		1247	if (backend_fd >= 0)
		1248	close (backend_fd);
895		1249
896	#if EV_USE_PORT	1250	#if EV_USE_PORT
897	if (backend == EVBACKEND_PORT ) port_destroy (EV_A);	1251	if (backend == EVBACKEND_PORT ) port_destroy (EV_A);
898	#endif	1252	#endif
899	#if EV_USE_KQUEUE	1253	#if EV_USE_KQUEUE
…		…
908	#if EV_USE_SELECT	1262	#if EV_USE_SELECT
909	if (backend == EVBACKEND_SELECT) select_destroy (EV_A);	1263	if (backend == EVBACKEND_SELECT) select_destroy (EV_A);
910	#endif	1264	#endif
911		1265
912	for (i = NUMPRI; i--; )	1266	for (i = NUMPRI; i--; )
		1267	{
913	array_free (pending, [i]);	1268	array_free (pending, [i]);
		1269	#if EV_IDLE_ENABLE
		1270	array_free (idle, [i]);
		1271	#endif
		1272	}
		1273
		1274	ev_free (anfds); anfdmax = 0;
914		1275
915	/* have to use the microsoft-never-gets-it-right macro */	1276	/* have to use the microsoft-never-gets-it-right macro */
916	array_free (fdchange, EMPTY0);	1277	array_free (fdchange, EMPTY);
917	array_free (timer, EMPTY0);	1278	array_free (timer, EMPTY);
918	#if EV_PERIODIC_ENABLE	1279	#if EV_PERIODIC_ENABLE
919	array_free (periodic, EMPTY0);	1280	array_free (periodic, EMPTY);
920	#endif	1281	#endif
		1282	#if EV_FORK_ENABLE
921	array_free (idle, EMPTY0);	1283	array_free (fork, EMPTY);
		1284	#endif
922	array_free (prepare, EMPTY0);	1285	array_free (prepare, EMPTY);
923	array_free (check, EMPTY0);	1286	array_free (check, EMPTY);
		1287	#if EV_ASYNC_ENABLE
		1288	array_free (async, EMPTY);
		1289	#endif
924		1290
925	backend = 0;	1291	backend = 0;
926	}	1292	}
927		1293
928	static void	1294	#if EV_USE_INOTIFY
		1295	void inline_size infy_fork (EV_P);
		1296	#endif
		1297
		1298	void inline_size
929	loop_fork (EV_P)	1299	loop_fork (EV_P)
930	{	1300	{
931	#if EV_USE_PORT	1301	#if EV_USE_PORT
932	if (backend == EVBACKEND_PORT ) port_fork (EV_A);	1302	if (backend == EVBACKEND_PORT ) port_fork (EV_A);
933	#endif	1303	#endif
…		…
935	if (backend == EVBACKEND_KQUEUE) kqueue_fork (EV_A);	1305	if (backend == EVBACKEND_KQUEUE) kqueue_fork (EV_A);
936	#endif	1306	#endif
937	#if EV_USE_EPOLL	1307	#if EV_USE_EPOLL
938	if (backend == EVBACKEND_EPOLL ) epoll_fork (EV_A);	1308	if (backend == EVBACKEND_EPOLL ) epoll_fork (EV_A);
939	#endif	1309	#endif
		1310	#if EV_USE_INOTIFY
		1311	infy_fork (EV_A);
		1312	#endif
940		1313
941	if (ev_is_active (&sigev))	1314	if (ev_is_active (&pipeev))
942	{	1315	{
943	/* default loop */	1316	/* this "locks" the handlers against writing to the pipe */
		1317	/* while we modify the fd vars */
		1318	gotsig = 1;
		1319	#if EV_ASYNC_ENABLE
		1320	gotasync = 1;
		1321	#endif
944		1322
945	ev_ref (EV_A);	1323	ev_ref (EV_A);
946	ev_io_stop (EV_A_ &sigev);	1324	ev_io_stop (EV_A_ &pipeev);
		1325
		1326	#if EV_USE_EVENTFD
		1327	if (evfd >= 0)
		1328	close (evfd);
		1329	#endif
		1330
		1331	if (evpipe [0] >= 0)
		1332	{
947	close (sigpipe [0]);	1333	close (evpipe [0]);
948	close (sigpipe [1]);	1334	close (evpipe [1]);
		1335	}
949		1336
950	while (pipe (sigpipe))
951	syserr ("(libev) error creating pipe");
952
953	siginit (EV_A);	1337	evpipe_init (EV_A);
		1338	/* now iterate over everything, in case we missed something */
		1339	pipecb (EV_A_ &pipeev, EV_READ);
954	}	1340	}
955		1341
956	postfork = 0;	1342	postfork = 0;
957	}	1343	}
958		1344
…		…
980	}	1366	}
981		1367
982	void	1368	void
983	ev_loop_fork (EV_P)	1369	ev_loop_fork (EV_P)
984	{	1370	{
985	postfork = 1;	1371	postfork = 1; /* must be in line with ev_default_fork */
986	}	1372	}
987		1373
988	#endif	1374	#endif
989		1375
990	#if EV_MULTIPLICITY	1376	#if EV_MULTIPLICITY
…		…
993	#else	1379	#else
994	int	1380	int
995	ev_default_loop (unsigned int flags)	1381	ev_default_loop (unsigned int flags)
996	#endif	1382	#endif
997	{	1383	{
998	if (sigpipe [0] == sigpipe [1])
999	if (pipe (sigpipe))
1000	return 0;
1001
1002	if (!ev_default_loop_ptr)	1384	if (!ev_default_loop_ptr)
1003	{	1385	{
1004	#if EV_MULTIPLICITY	1386	#if EV_MULTIPLICITY
1005	struct ev_loop *loop = ev_default_loop_ptr = &default_loop_struct;	1387	struct ev_loop *loop = ev_default_loop_ptr = &default_loop_struct;
1006	#else	1388	#else
…		…
1009		1391
1010	loop_init (EV_A_ flags);	1392	loop_init (EV_A_ flags);
1011		1393
1012	if (ev_backend (EV_A))	1394	if (ev_backend (EV_A))
1013	{	1395	{
1014	siginit (EV_A);
1015
1016	#ifndef _WIN32	1396	#ifndef _WIN32
1017	ev_signal_init (&childev, childcb, SIGCHLD);	1397	ev_signal_init (&childev, childcb, SIGCHLD);
1018	ev_set_priority (&childev, EV_MAXPRI);	1398	ev_set_priority (&childev, EV_MAXPRI);
1019	ev_signal_start (EV_A_ &childev);	1399	ev_signal_start (EV_A_ &childev);
1020	ev_unref (EV_A); /* child watcher should not keep loop alive */	1400	ev_unref (EV_A); /* child watcher should not keep loop alive */
…		…
1037	#ifndef _WIN32	1417	#ifndef _WIN32
1038	ev_ref (EV_A); /* child watcher */	1418	ev_ref (EV_A); /* child watcher */
1039	ev_signal_stop (EV_A_ &childev);	1419	ev_signal_stop (EV_A_ &childev);
1040	#endif	1420	#endif
1041		1421
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);	1422	loop_destroy (EV_A);
1049	}	1423	}
1050		1424
1051	void	1425	void
1052	ev_default_fork (void)	1426	ev_default_fork (void)
…		…
1054	#if EV_MULTIPLICITY	1428	#if EV_MULTIPLICITY
1055	struct ev_loop *loop = ev_default_loop_ptr;	1429	struct ev_loop *loop = ev_default_loop_ptr;
1056	#endif	1430	#endif
1057		1431
1058	if (backend)	1432	if (backend)
1059	postfork = 1;	1433	postfork = 1; /* must be in line with ev_loop_fork */
1060	}	1434	}
1061		1435
1062	/*****************************************************************************/	1436	/*****************************************************************************/
1063		1437
1064	int inline_size	1438	void
1065	any_pending (EV_P)	1439	ev_invoke (EV_P_ void *w, int revents)
1066	{	1440	{
1067	int pri;	1441	EV_CB_INVOKE ((W)w, revents);
1068
1069	for (pri = NUMPRI; pri--; )
1070	if (pendingcnt [pri])
1071	return 1;
1072
1073	return 0;
1074	}	1442	}
1075		1443
1076	void inline_speed	1444	void inline_speed
1077	call_pending (EV_P)	1445	call_pending (EV_P)
1078	{	1446	{
…		…
1083	{	1451	{
1084	ANPENDING *p = pendings [pri] + --pendingcnt [pri];	1452	ANPENDING *p = pendings [pri] + --pendingcnt [pri];
1085		1453
1086	if (expect_true (p->w))	1454	if (expect_true (p->w))
1087	{	1455	{
1088	assert (("non-pending watcher on pending list", p->w->pending));	1456	/*assert (("non-pending watcher on pending list", p->w->pending));*/
1089		1457
1090	p->w->pending = 0;	1458	p->w->pending = 0;
1091	EV_CB_INVOKE (p->w, p->events);	1459	EV_CB_INVOKE (p->w, p->events);
1092	}	1460	}
1093	}	1461	}
1094	}	1462	}
1095		1463
1096	void inline_size	1464	void inline_size
1097	timers_reify (EV_P)	1465	timers_reify (EV_P)
1098	{	1466	{
1099	while (timercnt && ((WT)timers [0])->at <= mn_now)	1467	while (timercnt && ev_at (timers [1]) <= mn_now)
1100	{	1468	{
1101	ev_timer *w = timers [0];	1469	ev_timer *w = (ev_timer *)timers [1];
1102		1470
1103	assert (("inactive timer on timer heap detected", ev_is_active (w)));	1471	/*assert (("inactive timer on timer heap detected", ev_is_active (w)));*/
1104		1472
1105	/* first reschedule or stop timer */	1473	/* first reschedule or stop timer */
1106	if (w->repeat)	1474	if (w->repeat)
1107	{	1475	{
1108	assert (("negative ev_timer repeat value found while processing timers", w->repeat > 0.));	1476	assert (("negative ev_timer repeat value found while processing timers", w->repeat > 0.));
1109		1477
1110	((WT)w)->at += w->repeat;	1478	ev_at (w) += w->repeat;
1111	if (((WT)w)->at < mn_now)	1479	if (ev_at (w) < mn_now)
1112	((WT)w)->at = mn_now;	1480	ev_at (w) = mn_now;
1113		1481
1114	downheap ((WT *)timers, timercnt, 0);	1482	downheap (timers, timercnt, 1);
1115	}	1483	}
1116	else	1484	else
1117	ev_timer_stop (EV_A_ w); /* nonrepeating: stop timer */	1485	ev_timer_stop (EV_A_ w); /* nonrepeating: stop timer */
1118		1486
1119	ev_feed_event (EV_A_ (W)w, EV_TIMEOUT);	1487	ev_feed_event (EV_A_ (W)w, EV_TIMEOUT);
…		…
1122		1490
1123	#if EV_PERIODIC_ENABLE	1491	#if EV_PERIODIC_ENABLE
1124	void inline_size	1492	void inline_size
1125	periodics_reify (EV_P)	1493	periodics_reify (EV_P)
1126	{	1494	{
1127	while (periodiccnt && ((WT)periodics [0])->at <= ev_rt_now)	1495	while (periodiccnt && ev_at (periodics [1]) <= ev_rt_now)
1128	{	1496	{
1129	ev_periodic *w = periodics [0];	1497	ev_periodic *w = (ev_periodic *)periodics [1];
1130		1498
1131	assert (("inactive timer on periodic heap detected", ev_is_active (w)));	1499	/*assert (("inactive timer on periodic heap detected", ev_is_active (w)));*/
1132		1500
1133	/* first reschedule or stop timer */	1501	/* first reschedule or stop timer */
1134	if (w->reschedule_cb)	1502	if (w->reschedule_cb)
1135	{	1503	{
1136	((WT)w)->at = w->reschedule_cb (w, ev_rt_now + 0.0001);	1504	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));	1505	assert (("ev_periodic reschedule callback returned time in the past", ev_at (w) > ev_rt_now));
1138	downheap ((WT *)periodics, periodiccnt, 0);	1506	downheap (periodics, periodiccnt, 1);
1139	}	1507	}
1140	else if (w->interval)	1508	else if (w->interval)
1141	{	1509	{
1142	((WT)w)->at += floor ((ev_rt_now - ((WT)w)->at) / w->interval + 1.) * w->interval;	1510	ev_at (w) = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval;
		1511	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));	1512	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);	1513	downheap (periodics, periodiccnt, 1);
1145	}	1514	}
1146	else	1515	else
1147	ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */	1516	ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */
1148		1517
1149	ev_feed_event (EV_A_ (W)w, EV_PERIODIC);	1518	ev_feed_event (EV_A_ (W)w, EV_PERIODIC);
…		…
1156	int i;	1525	int i;
1157		1526
1158	/* adjust periodics after time jump */	1527	/* adjust periodics after time jump */
1159	for (i = 0; i < periodiccnt; ++i)	1528	for (i = 0; i < periodiccnt; ++i)
1160	{	1529	{
1161	ev_periodic *w = periodics [i];	1530	ev_periodic *w = (ev_periodic *)periodics [i];
1162		1531
1163	if (w->reschedule_cb)	1532	if (w->reschedule_cb)
1164	((WT)w)->at = w->reschedule_cb (w, ev_rt_now);	1533	ev_at (w) = w->reschedule_cb (w, ev_rt_now);
1165	else if (w->interval)	1534	else if (w->interval)
1166	((WT)w)->at += ceil ((ev_rt_now - ((WT)w)->at) / w->interval) * w->interval;	1535	ev_at (w) = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval;
1167	}	1536	}
1168		1537
1169	/* now rebuild the heap */	1538	/* now rebuild the heap */
1170	for (i = periodiccnt >> 1; i--; )	1539	for (i = periodiccnt >> 1; i--; )
1171	downheap ((WT *)periodics, periodiccnt, i);	1540	downheap (periodics, periodiccnt, i);
1172	}	1541	}
1173	#endif	1542	#endif
1174		1543
		1544	#if EV_IDLE_ENABLE
1175	int inline_size	1545	void inline_size
1176	time_update_monotonic (EV_P)	1546	idle_reify (EV_P)
1177	{	1547	{
		1548	if (expect_false (idleall))
		1549	{
		1550	int pri;
		1551
		1552	for (pri = NUMPRI; pri--; )
		1553	{
		1554	if (pendingcnt [pri])
		1555	break;
		1556
		1557	if (idlecnt [pri])
		1558	{
		1559	queue_events (EV_A_ (W *)idles [pri], idlecnt [pri], EV_IDLE);
		1560	break;
		1561	}
		1562	}
		1563	}
		1564	}
		1565	#endif
		1566
		1567	void inline_speed
		1568	time_update (EV_P_ ev_tstamp max_block)
		1569	{
		1570	int i;
		1571
		1572	#if EV_USE_MONOTONIC
		1573	if (expect_true (have_monotonic))
		1574	{
		1575	ev_tstamp odiff = rtmn_diff;
		1576
1178	mn_now = get_clock ();	1577	mn_now = get_clock ();
1179		1578
		1579	/* only fetch the realtime clock every 0.5*MIN_TIMEJUMP seconds */
		1580	/* interpolate in the meantime */
1180	if (expect_true (mn_now - now_floor < MIN_TIMEJUMP * .5))	1581	if (expect_true (mn_now - now_floor < MIN_TIMEJUMP * .5))
1181	{	1582	{
1182	ev_rt_now = rtmn_diff + mn_now;	1583	ev_rt_now = rtmn_diff + mn_now;
1183	return 0;	1584	return;
1184	}	1585	}
1185	else	1586
1186	{
1187	now_floor = mn_now;	1587	now_floor = mn_now;
1188	ev_rt_now = ev_time ();	1588	ev_rt_now = ev_time ();
1189	return 1;
1190	}
1191	}
1192		1589
1193	void inline_size	1590	/* loop a few times, before making important decisions.
1194	time_update (EV_P)	1591	* on the choice of "4": one iteration isn't enough,
1195	{	1592	* in case we get preempted during the calls to
1196	int i;	1593	* ev_time and get_clock. a second call is almost guaranteed
1197		1594	* to succeed in that case, though. and looping a few more times
1198	#if EV_USE_MONOTONIC	1595	* doesn't hurt either as we only do this on time-jumps or
1199	if (expect_true (have_monotonic))	1596	* in the unlikely event of having been preempted here.
1200	{	1597	*/
1201	if (time_update_monotonic (EV_A))	1598	for (i = 4; --i; )
1202	{	1599	{
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;	1600	rtmn_diff = ev_rt_now - mn_now;
1216		1601
1217	if (fabs (odiff - rtmn_diff) < MIN_TIMEJUMP)	1602	if (fabs (odiff - rtmn_diff) < MIN_TIMEJUMP)
1218	return; /* all is well */	1603	return; /* all is well */
1219		1604
1220	ev_rt_now = ev_time ();	1605	ev_rt_now = ev_time ();
1221	mn_now = get_clock ();	1606	mn_now = get_clock ();
1222	now_floor = mn_now;	1607	now_floor = mn_now;
1223	}	1608	}
1224		1609
1225	# if EV_PERIODIC_ENABLE	1610	# if EV_PERIODIC_ENABLE
1226	periodics_reschedule (EV_A);	1611	periodics_reschedule (EV_A);
1227	# endif	1612	# endif
1228	/* no timer adjustment, as the monotonic clock doesn't jump */	1613	/* no timer adjustment, as the monotonic clock doesn't jump */
1229	/* timers_reschedule (EV_A_ rtmn_diff - odiff) */	1614	/* timers_reschedule (EV_A_ rtmn_diff - odiff) */
1230	}
1231	}	1615	}
1232	else	1616	else
1233	#endif	1617	#endif
1234	{	1618	{
1235	ev_rt_now = ev_time ();	1619	ev_rt_now = ev_time ();
1236		1620
1237	if (expect_false (mn_now > ev_rt_now || mn_now < ev_rt_now - MAX_BLOCKTIME - MIN_TIMEJUMP))	1621	if (expect_false (mn_now > ev_rt_now || ev_rt_now > mn_now + max_block + MIN_TIMEJUMP))
1238	{	1622	{
1239	#if EV_PERIODIC_ENABLE	1623	#if EV_PERIODIC_ENABLE
1240	periodics_reschedule (EV_A);	1624	periodics_reschedule (EV_A);
1241	#endif	1625	#endif
1242
1243	/* adjust timers. this is easy, as the offset is the same for all */	1626	/* adjust timers. this is easy, as the offset is the same for all of them */
1244	for (i = 0; i < timercnt; ++i)	1627	for (i = 1; i <= timercnt; ++i)
1245	((WT)timers [i])->at += ev_rt_now - mn_now;	1628	ev_at (timers [i]) += ev_rt_now - mn_now;
1246	}	1629	}
1247		1630
1248	mn_now = ev_rt_now;	1631	mn_now = ev_rt_now;
1249	}	1632	}
1250	}	1633	}
…		…
1264	static int loop_done;	1647	static int loop_done;
1265		1648
1266	void	1649	void
1267	ev_loop (EV_P_ int flags)	1650	ev_loop (EV_P_ int flags)
1268	{	1651	{
1269	loop_done = flags & (EVLOOP_ONESHOT | EVLOOP_NONBLOCK)	1652	loop_done = EVUNLOOP_CANCEL;
1270	? EVUNLOOP_ONE
1271	: EVUNLOOP_CANCEL;
1272		1653
1273	while (activecnt)	1654	call_pending (EV_A); /* in case we recurse, ensure ordering stays nice and clean */
		1655
		1656	do
1274	{	1657	{
		1658	#ifndef _WIN32
		1659	if (expect_false (curpid)) /* penalise the forking check even more */
		1660	if (expect_false (getpid () != curpid))
		1661	{
		1662	curpid = getpid ();
		1663	postfork = 1;
		1664	}
		1665	#endif
		1666
		1667	#if EV_FORK_ENABLE
		1668	/* we might have forked, so queue fork handlers */
		1669	if (expect_false (postfork))
		1670	if (forkcnt)
		1671	{
		1672	queue_events (EV_A_ (W *)forks, forkcnt, EV_FORK);
		1673	call_pending (EV_A);
		1674	}
		1675	#endif
		1676
1275	/* queue check watchers (and execute them) */	1677	/* queue prepare watchers (and execute them) */
1276	if (expect_false (preparecnt))	1678	if (expect_false (preparecnt))
1277	{	1679	{
1278	queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE);	1680	queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE);
1279	call_pending (EV_A);	1681	call_pending (EV_A);
1280	}	1682	}
1281		1683
		1684	if (expect_false (!activecnt))
		1685	break;
		1686
1282	/* we might have forked, so reify kernel state if necessary */	1687	/* we might have forked, so reify kernel state if necessary */
1283	if (expect_false (postfork))	1688	if (expect_false (postfork))
1284	loop_fork (EV_A);	1689	loop_fork (EV_A);
1285		1690
1286	/* update fd-related kernel structures */	1691	/* update fd-related kernel structures */
1287	fd_reify (EV_A);	1692	fd_reify (EV_A);
1288		1693
1289	/* calculate blocking time */	1694	/* calculate blocking time */
1290	{	1695	{
1291	double block;	1696	ev_tstamp waittime = 0.;
		1697	ev_tstamp sleeptime = 0.;
1292		1698
1293	if (flags & EVLOOP_NONBLOCK || idlecnt)	1699	if (expect_true (!(flags & EVLOOP_NONBLOCK || idleall || !activecnt)))
1294	block = 0.; /* do not block at all */
1295	else
1296	{	1700	{
1297	/* update time to cancel out callback processing overhead */	1701	/* 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);	1702	time_update (EV_A_ 1e100);
1301	else
1302	#endif
1303	{
1304	ev_rt_now = ev_time ();
1305	mn_now = ev_rt_now;
1306	}
1307		1703
1308	block = MAX_BLOCKTIME;	1704	waittime = MAX_BLOCKTIME;
1309		1705
1310	if (timercnt)	1706	if (timercnt)
1311	{	1707	{
1312	ev_tstamp to = ((WT)timers [0])->at - mn_now + backend_fudge;	1708	ev_tstamp to = ev_at (timers [1]) - mn_now + backend_fudge;
1313	if (block > to) block = to;	1709	if (waittime > to) waittime = to;
1314	}	1710	}
1315		1711
1316	#if EV_PERIODIC_ENABLE	1712	#if EV_PERIODIC_ENABLE
1317	if (periodiccnt)	1713	if (periodiccnt)
1318	{	1714	{
1319	ev_tstamp to = ((WT)periodics [0])->at - ev_rt_now + backend_fudge;	1715	ev_tstamp to = ev_at (periodics [1]) - ev_rt_now + backend_fudge;
1320	if (block > to) block = to;	1716	if (waittime > to) waittime = to;
1321	}	1717	}
1322	#endif	1718	#endif
1323		1719
1324	if (expect_false (block < 0.)) block = 0.;	1720	if (expect_false (waittime < timeout_blocktime))
		1721	waittime = timeout_blocktime;
		1722
		1723	sleeptime = waittime - backend_fudge;
		1724
		1725	if (expect_true (sleeptime > io_blocktime))
		1726	sleeptime = io_blocktime;
		1727
		1728	if (sleeptime)
		1729	{
		1730	ev_sleep (sleeptime);
		1731	waittime -= sleeptime;
		1732	}
1325	}	1733	}
1326		1734
		1735	++loop_count;
1327	backend_poll (EV_A_ block);	1736	backend_poll (EV_A_ waittime);
		1737
		1738	/* update ev_rt_now, do magic */
		1739	time_update (EV_A_ waittime + sleeptime);
1328	}	1740	}
1329
1330	/* update ev_rt_now, do magic */
1331	time_update (EV_A);
1332		1741
1333	/* queue pending timers and reschedule them */	1742	/* queue pending timers and reschedule them */
1334	timers_reify (EV_A); /* relative timers called last */	1743	timers_reify (EV_A); /* relative timers called last */
1335	#if EV_PERIODIC_ENABLE	1744	#if EV_PERIODIC_ENABLE
1336	periodics_reify (EV_A); /* absolute timers called first */	1745	periodics_reify (EV_A); /* absolute timers called first */
1337	#endif	1746	#endif
1338		1747
		1748	#if EV_IDLE_ENABLE
1339	/* queue idle watchers unless other events are pending */	1749	/* queue idle watchers unless other events are pending */
1340	if (idlecnt && !any_pending (EV_A))	1750	idle_reify (EV_A);
1341	queue_events (EV_A_ (W *)idles, idlecnt, EV_IDLE);	1751	#endif
1342		1752
1343	/* queue check watchers, to be executed first */	1753	/* queue check watchers, to be executed first */
1344	if (expect_false (checkcnt))	1754	if (expect_false (checkcnt))
1345	queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK);	1755	queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK);
1346		1756
1347	call_pending (EV_A);	1757	call_pending (EV_A);
1348
1349	if (expect_false (loop_done))
1350	break;
1351	}	1758	}
		1759	while (expect_true (
		1760	activecnt
		1761	&& !loop_done
		1762	&& !(flags & (EVLOOP_ONESHOT | EVLOOP_NONBLOCK))
		1763	));
1352		1764
1353	if (loop_done == EVUNLOOP_ONE)	1765	if (loop_done == EVUNLOOP_ONE)
1354	loop_done = EVUNLOOP_CANCEL;	1766	loop_done = EVUNLOOP_CANCEL;
1355	}	1767	}
1356		1768
…		…
1383	head = &(*head)->next;	1795	head = &(*head)->next;
1384	}	1796	}
1385	}	1797	}
1386		1798
1387	void inline_speed	1799	void inline_speed
1388	ev_clear_pending (EV_P_ W w)	1800	clear_pending (EV_P_ W w)
1389	{	1801	{
1390	if (w->pending)	1802	if (w->pending)
1391	{	1803	{
1392	pendings [ABSPRI (w)][w->pending - 1].w = 0;	1804	pendings [ABSPRI (w)][w->pending - 1].w = 0;
1393	w->pending = 0;	1805	w->pending = 0;
1394	}	1806	}
1395	}	1807	}
1396		1808
		1809	int
		1810	ev_clear_pending (EV_P_ void *w)
		1811	{
		1812	W w_ = (W)w;
		1813	int pending = w_->pending;
		1814
		1815	if (expect_true (pending))
		1816	{
		1817	ANPENDING *p = pendings [ABSPRI (w_)] + pending - 1;
		1818	w_->pending = 0;
		1819	p->w = 0;
		1820	return p->events;
		1821	}
		1822	else
		1823	return 0;
		1824	}
		1825
		1826	void inline_size
		1827	pri_adjust (EV_P_ W w)
		1828	{
		1829	int pri = w->priority;
		1830	pri = pri < EV_MINPRI ? EV_MINPRI : pri;
		1831	pri = pri > EV_MAXPRI ? EV_MAXPRI : pri;
		1832	w->priority = pri;
		1833	}
		1834
1397	void inline_speed	1835	void inline_speed
1398	ev_start (EV_P_ W w, int active)	1836	ev_start (EV_P_ W w, int active)
1399	{	1837	{
1400	if (w->priority < EV_MINPRI) w->priority = EV_MINPRI;	1838	pri_adjust (EV_A_ w);
1401	if (w->priority > EV_MAXPRI) w->priority = EV_MAXPRI;
1402
1403	w->active = active;	1839	w->active = active;
1404	ev_ref (EV_A);	1840	ev_ref (EV_A);
1405	}	1841	}
1406		1842
1407	void inline_size	1843	void inline_size
…		…
1411	w->active = 0;	1847	w->active = 0;
1412	}	1848	}
1413		1849
1414	/*****************************************************************************/	1850	/*****************************************************************************/
1415		1851
1416	void	1852	void noinline
1417	ev_io_start (EV_P_ ev_io *w)	1853	ev_io_start (EV_P_ ev_io *w)
1418	{	1854	{
1419	int fd = w->fd;	1855	int fd = w->fd;
1420		1856
1421	if (expect_false (ev_is_active (w)))	1857	if (expect_false (ev_is_active (w)))
…		…
1423		1859
1424	assert (("ev_io_start called with negative fd", fd >= 0));	1860	assert (("ev_io_start called with negative fd", fd >= 0));
1425		1861
1426	ev_start (EV_A_ (W)w, 1);	1862	ev_start (EV_A_ (W)w, 1);
1427	array_needsize (ANFD, anfds, anfdmax, fd + 1, anfds_init);	1863	array_needsize (ANFD, anfds, anfdmax, fd + 1, anfds_init);
1428	wlist_add ((WL *)&anfds[fd].head, (WL)w);	1864	wlist_add (&anfds[fd].head, (WL)w);
1429		1865
1430	fd_change (EV_A_ fd);	1866	fd_change (EV_A_ fd, w->events & EV_IOFDSET | 1);
		1867	w->events &= ~EV_IOFDSET;
1431	}	1868	}
1432		1869
1433	void	1870	void noinline
1434	ev_io_stop (EV_P_ ev_io *w)	1871	ev_io_stop (EV_P_ ev_io *w)
1435	{	1872	{
1436	ev_clear_pending (EV_A_ (W)w);	1873	clear_pending (EV_A_ (W)w);
1437	if (expect_false (!ev_is_active (w)))	1874	if (expect_false (!ev_is_active (w)))
1438	return;	1875	return;
1439		1876
1440	assert (("ev_io_start called with illegal fd (must stay constant after start!)", w->fd >= 0 && w->fd < anfdmax));	1877	assert (("ev_io_start called with illegal fd (must stay constant after start!)", w->fd >= 0 && w->fd < anfdmax));
1441		1878
1442	wlist_del ((WL *)&anfds[w->fd].head, (WL)w);	1879	wlist_del (&anfds[w->fd].head, (WL)w);
1443	ev_stop (EV_A_ (W)w);	1880	ev_stop (EV_A_ (W)w);
1444		1881
1445	fd_change (EV_A_ w->fd);	1882	fd_change (EV_A_ w->fd, 1);
1446	}	1883	}
1447		1884
1448	void	1885	void noinline
1449	ev_timer_start (EV_P_ ev_timer *w)	1886	ev_timer_start (EV_P_ ev_timer *w)
1450	{	1887	{
1451	if (expect_false (ev_is_active (w)))	1888	if (expect_false (ev_is_active (w)))
1452	return;	1889	return;
1453		1890
1454	((WT)w)->at += mn_now;	1891	ev_at (w) += mn_now;
1455		1892
1456	assert (("ev_timer_start called with negative timer repeat value", w->repeat >= 0.));	1893	assert (("ev_timer_start called with negative timer repeat value", w->repeat >= 0.));
1457		1894
1458	ev_start (EV_A_ (W)w, ++timercnt);	1895	ev_start (EV_A_ (W)w, ++timercnt);
1459	array_needsize (ev_timer *, timers, timermax, timercnt, EMPTY2);	1896	array_needsize (WT, timers, timermax, timercnt + 1, EMPTY2);
1460	timers [timercnt - 1] = w;	1897	timers [timercnt] = (WT)w;
1461	upheap ((WT *)timers, timercnt - 1);	1898	upheap (timers, timercnt);
1462		1899
1463	assert (("internal timer heap corruption", timers [((W)w)->active - 1] == w));	1900	/*assert (("internal timer heap corruption", timers [((W)w)->active] == w));*/
1464	}	1901	}
1465		1902
1466	void	1903	void noinline
1467	ev_timer_stop (EV_P_ ev_timer *w)	1904	ev_timer_stop (EV_P_ ev_timer *w)
1468	{	1905	{
1469	ev_clear_pending (EV_A_ (W)w);	1906	clear_pending (EV_A_ (W)w);
1470	if (expect_false (!ev_is_active (w)))	1907	if (expect_false (!ev_is_active (w)))
1471	return;	1908	return;
1472		1909
1473	assert (("internal timer heap corruption", timers [((W)w)->active - 1] == w));	1910	assert (("internal timer heap corruption", timers [((W)w)->active] == (WT)w));
1474		1911
		1912	{
		1913	int active = ((W)w)->active;
		1914
1475	if (expect_true (((W)w)->active < timercnt--))	1915	if (expect_true (active < timercnt))
1476	{	1916	{
1477	timers [((W)w)->active - 1] = timers [timercnt];	1917	timers [active] = timers [timercnt];
1478	adjustheap ((WT *)timers, timercnt, ((W)w)->active - 1);	1918	adjustheap (timers, timercnt, active);
1479	}	1919	}
1480		1920
1481	((WT)w)->at -= mn_now;	1921	--timercnt;
		1922	}
		1923
		1924	ev_at (w) -= mn_now;
1482		1925
1483	ev_stop (EV_A_ (W)w);	1926	ev_stop (EV_A_ (W)w);
1484	}	1927	}
1485		1928
1486	void	1929	void noinline
1487	ev_timer_again (EV_P_ ev_timer *w)	1930	ev_timer_again (EV_P_ ev_timer *w)
1488	{	1931	{
1489	if (ev_is_active (w))	1932	if (ev_is_active (w))
1490	{	1933	{
1491	if (w->repeat)	1934	if (w->repeat)
1492	{	1935	{
1493	((WT)w)->at = mn_now + w->repeat;	1936	ev_at (w) = mn_now + w->repeat;
1494	adjustheap ((WT *)timers, timercnt, ((W)w)->active - 1);	1937	adjustheap (timers, timercnt, ((W)w)->active);
1495	}	1938	}
1496	else	1939	else
1497	ev_timer_stop (EV_A_ w);	1940	ev_timer_stop (EV_A_ w);
1498	}	1941	}
1499	else if (w->repeat)	1942	else if (w->repeat)
1500	{	1943	{
1501	w->at = w->repeat;	1944	ev_at (w) = w->repeat;
1502	ev_timer_start (EV_A_ w);	1945	ev_timer_start (EV_A_ w);
1503	}	1946	}
1504	}	1947	}
1505		1948
1506	#if EV_PERIODIC_ENABLE	1949	#if EV_PERIODIC_ENABLE
1507	void	1950	void noinline
1508	ev_periodic_start (EV_P_ ev_periodic *w)	1951	ev_periodic_start (EV_P_ ev_periodic *w)
1509	{	1952	{
1510	if (expect_false (ev_is_active (w)))	1953	if (expect_false (ev_is_active (w)))
1511	return;	1954	return;
1512		1955
1513	if (w->reschedule_cb)	1956	if (w->reschedule_cb)
1514	((WT)w)->at = w->reschedule_cb (w, ev_rt_now);	1957	ev_at (w) = w->reschedule_cb (w, ev_rt_now);
1515	else if (w->interval)	1958	else if (w->interval)
1516	{	1959	{
1517	assert (("ev_periodic_start called with negative interval value", w->interval >= 0.));	1960	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 */	1961	/* 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;	1962	ev_at (w) = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval;
1520	}	1963	}
		1964	else
		1965	ev_at (w) = w->offset;
1521		1966
1522	ev_start (EV_A_ (W)w, ++periodiccnt);	1967	ev_start (EV_A_ (W)w, ++periodiccnt);
1523	array_needsize (ev_periodic *, periodics, periodicmax, periodiccnt, EMPTY2);	1968	array_needsize (WT, periodics, periodicmax, periodiccnt + 1, EMPTY2);
1524	periodics [periodiccnt - 1] = w;	1969	periodics [periodiccnt] = (WT)w;
1525	upheap ((WT *)periodics, periodiccnt - 1);	1970	upheap (periodics, periodiccnt);
1526		1971
1527	assert (("internal periodic heap corruption", periodics [((W)w)->active - 1] == w));	1972	/*assert (("internal periodic heap corruption", periodics [((W)w)->active - 1] == w));*/
1528	}	1973	}
1529		1974
1530	void	1975	void noinline
1531	ev_periodic_stop (EV_P_ ev_periodic *w)	1976	ev_periodic_stop (EV_P_ ev_periodic *w)
1532	{	1977	{
1533	ev_clear_pending (EV_A_ (W)w);	1978	clear_pending (EV_A_ (W)w);
1534	if (expect_false (!ev_is_active (w)))	1979	if (expect_false (!ev_is_active (w)))
1535	return;	1980	return;
1536		1981
1537	assert (("internal periodic heap corruption", periodics [((W)w)->active - 1] == w));	1982	assert (("internal periodic heap corruption", periodics [((W)w)->active] == (WT)w));
1538		1983
		1984	{
		1985	int active = ((W)w)->active;
		1986
1539	if (expect_true (((W)w)->active < periodiccnt--))	1987	if (expect_true (active < periodiccnt))
1540	{	1988	{
1541	periodics [((W)w)->active - 1] = periodics [periodiccnt];	1989	periodics [active] = periodics [periodiccnt];
1542	adjustheap ((WT *)periodics, periodiccnt, ((W)w)->active - 1);	1990	adjustheap (periodics, periodiccnt, active);
1543	}	1991	}
		1992
		1993	--periodiccnt;
		1994	}
1544		1995
1545	ev_stop (EV_A_ (W)w);	1996	ev_stop (EV_A_ (W)w);
1546	}	1997	}
1547		1998
1548	void	1999	void noinline
1549	ev_periodic_again (EV_P_ ev_periodic *w)	2000	ev_periodic_again (EV_P_ ev_periodic *w)
1550	{	2001	{
1551	/* TODO: use adjustheap and recalculation */	2002	/* TODO: use adjustheap and recalculation */
1552	ev_periodic_stop (EV_A_ w);	2003	ev_periodic_stop (EV_A_ w);
1553	ev_periodic_start (EV_A_ w);	2004	ev_periodic_start (EV_A_ w);
1554	}	2005	}
1555	#endif	2006	#endif
1556		2007
		2008	#ifndef SA_RESTART
		2009	# define SA_RESTART 0
		2010	#endif
		2011
		2012	void noinline
		2013	ev_signal_start (EV_P_ ev_signal *w)
		2014	{
		2015	#if EV_MULTIPLICITY
		2016	assert (("signal watchers are only supported in the default loop", loop == ev_default_loop_ptr));
		2017	#endif
		2018	if (expect_false (ev_is_active (w)))
		2019	return;
		2020
		2021	assert (("ev_signal_start called with illegal signal number", w->signum > 0));
		2022
		2023	evpipe_init (EV_A);
		2024
		2025	{
		2026	#ifndef _WIN32
		2027	sigset_t full, prev;
		2028	sigfillset (&full);
		2029	sigprocmask (SIG_SETMASK, &full, &prev);
		2030	#endif
		2031
		2032	array_needsize (ANSIG, signals, signalmax, w->signum, signals_init);
		2033
		2034	#ifndef _WIN32
		2035	sigprocmask (SIG_SETMASK, &prev, 0);
		2036	#endif
		2037	}
		2038
		2039	ev_start (EV_A_ (W)w, 1);
		2040	wlist_add (&signals [w->signum - 1].head, (WL)w);
		2041
		2042	if (!((WL)w)->next)
		2043	{
		2044	#if _WIN32
		2045	signal (w->signum, ev_sighandler);
		2046	#else
		2047	struct sigaction sa;
		2048	sa.sa_handler = ev_sighandler;
		2049	sigfillset (&sa.sa_mask);
		2050	sa.sa_flags = SA_RESTART; /* if restarting works we save one iteration */
		2051	sigaction (w->signum, &sa, 0);
		2052	#endif
		2053	}
		2054	}
		2055
		2056	void noinline
		2057	ev_signal_stop (EV_P_ ev_signal *w)
		2058	{
		2059	clear_pending (EV_A_ (W)w);
		2060	if (expect_false (!ev_is_active (w)))
		2061	return;
		2062
		2063	wlist_del (&signals [w->signum - 1].head, (WL)w);
		2064	ev_stop (EV_A_ (W)w);
		2065
		2066	if (!signals [w->signum - 1].head)
		2067	signal (w->signum, SIG_DFL);
		2068	}
		2069
		2070	void
		2071	ev_child_start (EV_P_ ev_child *w)
		2072	{
		2073	#if EV_MULTIPLICITY
		2074	assert (("child watchers are only supported in the default loop", loop == ev_default_loop_ptr));
		2075	#endif
		2076	if (expect_false (ev_is_active (w)))
		2077	return;
		2078
		2079	ev_start (EV_A_ (W)w, 1);
		2080	wlist_add (&childs [w->pid & (EV_PID_HASHSIZE - 1)], (WL)w);
		2081	}
		2082
		2083	void
		2084	ev_child_stop (EV_P_ ev_child *w)
		2085	{
		2086	clear_pending (EV_A_ (W)w);
		2087	if (expect_false (!ev_is_active (w)))
		2088	return;
		2089
		2090	wlist_del (&childs [w->pid & (EV_PID_HASHSIZE - 1)], (WL)w);
		2091	ev_stop (EV_A_ (W)w);
		2092	}
		2093
		2094	#if EV_STAT_ENABLE
		2095
		2096	# ifdef _WIN32
		2097	# undef lstat
		2098	# define lstat(a,b) _stati64 (a,b)
		2099	# endif
		2100
		2101	#define DEF_STAT_INTERVAL 5.0074891
		2102	#define MIN_STAT_INTERVAL 0.1074891
		2103
		2104	static void noinline stat_timer_cb (EV_P_ ev_timer *w_, int revents);
		2105
		2106	#if EV_USE_INOTIFY
		2107	# define EV_INOTIFY_BUFSIZE 8192
		2108
		2109	static void noinline
		2110	infy_add (EV_P_ ev_stat *w)
		2111	{
		2112	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);
		2113
		2114	if (w->wd < 0)
		2115	{
		2116	ev_timer_start (EV_A_ &w->timer); /* this is not race-free, so we still need to recheck periodically */
		2117
		2118	/* monitor some parent directory for speedup hints */
		2119	if ((errno == ENOENT || errno == EACCES) && strlen (w->path) < 4096)
		2120	{
		2121	char path [4096];
		2122	strcpy (path, w->path);
		2123
		2124	do
		2125	{
		2126	int mask = IN_MASK_ADD | IN_DELETE_SELF | IN_MOVE_SELF
		2127	| (errno == EACCES ? IN_ATTRIB : IN_CREATE | IN_MOVED_TO);
		2128
		2129	char *pend = strrchr (path, '/');
		2130
		2131	if (!pend)
		2132	break; /* whoops, no '/', complain to your admin */
		2133
		2134	*pend = 0;
		2135	w->wd = inotify_add_watch (fs_fd, path, mask);
		2136	}
		2137	while (w->wd < 0 && (errno == ENOENT || errno == EACCES));
		2138	}
		2139	}
		2140	else
		2141	ev_timer_stop (EV_A_ &w->timer); /* we can watch this in a race-free way */
		2142
		2143	if (w->wd >= 0)
		2144	wlist_add (&fs_hash [w->wd & (EV_INOTIFY_HASHSIZE - 1)].head, (WL)w);
		2145	}
		2146
		2147	static void noinline
		2148	infy_del (EV_P_ ev_stat *w)
		2149	{
		2150	int slot;
		2151	int wd = w->wd;
		2152
		2153	if (wd < 0)
		2154	return;
		2155
		2156	w->wd = -2;
		2157	slot = wd & (EV_INOTIFY_HASHSIZE - 1);
		2158	wlist_del (&fs_hash [slot].head, (WL)w);
		2159
		2160	/* remove this watcher, if others are watching it, they will rearm */
		2161	inotify_rm_watch (fs_fd, wd);
		2162	}
		2163
		2164	static void noinline
		2165	infy_wd (EV_P_ int slot, int wd, struct inotify_event *ev)
		2166	{
		2167	if (slot < 0)
		2168	/* overflow, need to check for all hahs slots */
		2169	for (slot = 0; slot < EV_INOTIFY_HASHSIZE; ++slot)
		2170	infy_wd (EV_A_ slot, wd, ev);
		2171	else
		2172	{
		2173	WL w_;
		2174
		2175	for (w_ = fs_hash [slot & (EV_INOTIFY_HASHSIZE - 1)].head; w_; )
		2176	{
		2177	ev_stat *w = (ev_stat *)w_;
		2178	w_ = w_->next; /* lets us remove this watcher and all before it */
		2179
		2180	if (w->wd == wd || wd == -1)
		2181	{
		2182	if (ev->mask & (IN_IGNORED | IN_UNMOUNT | IN_DELETE_SELF))
		2183	{
		2184	w->wd = -1;
		2185	infy_add (EV_A_ w); /* re-add, no matter what */
		2186	}
		2187
		2188	stat_timer_cb (EV_A_ &w->timer, 0);
		2189	}
		2190	}
		2191	}
		2192	}
		2193
		2194	static void
		2195	infy_cb (EV_P_ ev_io *w, int revents)
		2196	{
		2197	char buf [EV_INOTIFY_BUFSIZE];
		2198	struct inotify_event *ev = (struct inotify_event *)buf;
		2199	int ofs;
		2200	int len = read (fs_fd, buf, sizeof (buf));
		2201
		2202	for (ofs = 0; ofs < len; ofs += sizeof (struct inotify_event) + ev->len)
		2203	infy_wd (EV_A_ ev->wd, ev->wd, ev);
		2204	}
		2205
		2206	void inline_size
		2207	infy_init (EV_P)
		2208	{
		2209	if (fs_fd != -2)
		2210	return;
		2211
		2212	fs_fd = inotify_init ();
		2213
		2214	if (fs_fd >= 0)
		2215	{
		2216	ev_io_init (&fs_w, infy_cb, fs_fd, EV_READ);
		2217	ev_set_priority (&fs_w, EV_MAXPRI);
		2218	ev_io_start (EV_A_ &fs_w);
		2219	}
		2220	}
		2221
		2222	void inline_size
		2223	infy_fork (EV_P)
		2224	{
		2225	int slot;
		2226
		2227	if (fs_fd < 0)
		2228	return;
		2229
		2230	close (fs_fd);
		2231	fs_fd = inotify_init ();
		2232
		2233	for (slot = 0; slot < EV_INOTIFY_HASHSIZE; ++slot)
		2234	{
		2235	WL w_ = fs_hash [slot].head;
		2236	fs_hash [slot].head = 0;
		2237
		2238	while (w_)
		2239	{
		2240	ev_stat *w = (ev_stat *)w_;
		2241	w_ = w_->next; /* lets us add this watcher */
		2242
		2243	w->wd = -1;
		2244
		2245	if (fs_fd >= 0)
		2246	infy_add (EV_A_ w); /* re-add, no matter what */
		2247	else
		2248	ev_timer_start (EV_A_ &w->timer);
		2249	}
		2250
		2251	}
		2252	}
		2253
		2254	#endif
		2255
		2256	void
		2257	ev_stat_stat (EV_P_ ev_stat *w)
		2258	{
		2259	if (lstat (w->path, &w->attr) < 0)
		2260	w->attr.st_nlink = 0;
		2261	else if (!w->attr.st_nlink)
		2262	w->attr.st_nlink = 1;
		2263	}
		2264
		2265	static void noinline
		2266	stat_timer_cb (EV_P_ ev_timer *w_, int revents)
		2267	{
		2268	ev_stat *w = (ev_stat *)(((char *)w_) - offsetof (ev_stat, timer));
		2269
		2270	/* we copy this here each the time so that */
		2271	/* prev has the old value when the callback gets invoked */
		2272	w->prev = w->attr;
		2273	ev_stat_stat (EV_A_ w);
		2274
		2275	/* memcmp doesn't work on netbsd, they.... do stuff to their struct stat */
		2276	if (
		2277	w->prev.st_dev != w->attr.st_dev
		2278	|| w->prev.st_ino != w->attr.st_ino
		2279	|| w->prev.st_mode != w->attr.st_mode
		2280	|| w->prev.st_nlink != w->attr.st_nlink
		2281	|| w->prev.st_uid != w->attr.st_uid
		2282	|| w->prev.st_gid != w->attr.st_gid
		2283	|| w->prev.st_rdev != w->attr.st_rdev
		2284	|| w->prev.st_size != w->attr.st_size
		2285	|| w->prev.st_atime != w->attr.st_atime
		2286	|| w->prev.st_mtime != w->attr.st_mtime
		2287	|| w->prev.st_ctime != w->attr.st_ctime
		2288	) {
		2289	#if EV_USE_INOTIFY
		2290	infy_del (EV_A_ w);
		2291	infy_add (EV_A_ w);
		2292	ev_stat_stat (EV_A_ w); /* avoid race... */
		2293	#endif
		2294
		2295	ev_feed_event (EV_A_ w, EV_STAT);
		2296	}
		2297	}
		2298
		2299	void
		2300	ev_stat_start (EV_P_ ev_stat *w)
		2301	{
		2302	if (expect_false (ev_is_active (w)))
		2303	return;
		2304
		2305	/* since we use memcmp, we need to clear any padding data etc. */
		2306	memset (&w->prev, 0, sizeof (ev_statdata));
		2307	memset (&w->attr, 0, sizeof (ev_statdata));
		2308
		2309	ev_stat_stat (EV_A_ w);
		2310
		2311	if (w->interval < MIN_STAT_INTERVAL)
		2312	w->interval = w->interval ? MIN_STAT_INTERVAL : DEF_STAT_INTERVAL;
		2313
		2314	ev_timer_init (&w->timer, stat_timer_cb, w->interval, w->interval);
		2315	ev_set_priority (&w->timer, ev_priority (w));
		2316
		2317	#if EV_USE_INOTIFY
		2318	infy_init (EV_A);
		2319
		2320	if (fs_fd >= 0)
		2321	infy_add (EV_A_ w);
		2322	else
		2323	#endif
		2324	ev_timer_start (EV_A_ &w->timer);
		2325
		2326	ev_start (EV_A_ (W)w, 1);
		2327	}
		2328
		2329	void
		2330	ev_stat_stop (EV_P_ ev_stat *w)
		2331	{
		2332	clear_pending (EV_A_ (W)w);
		2333	if (expect_false (!ev_is_active (w)))
		2334	return;
		2335
		2336	#if EV_USE_INOTIFY
		2337	infy_del (EV_A_ w);
		2338	#endif
		2339	ev_timer_stop (EV_A_ &w->timer);
		2340
		2341	ev_stop (EV_A_ (W)w);
		2342	}
		2343	#endif
		2344
		2345	#if EV_IDLE_ENABLE
1557	void	2346	void
1558	ev_idle_start (EV_P_ ev_idle *w)	2347	ev_idle_start (EV_P_ ev_idle *w)
1559	{	2348	{
1560	if (expect_false (ev_is_active (w)))	2349	if (expect_false (ev_is_active (w)))
1561	return;	2350	return;
1562		2351
		2352	pri_adjust (EV_A_ (W)w);
		2353
		2354	{
		2355	int active = ++idlecnt [ABSPRI (w)];
		2356
		2357	++idleall;
1563	ev_start (EV_A_ (W)w, ++idlecnt);	2358	ev_start (EV_A_ (W)w, active);
		2359
1564	array_needsize (ev_idle *, idles, idlemax, idlecnt, EMPTY2);	2360	array_needsize (ev_idle *, idles [ABSPRI (w)], idlemax [ABSPRI (w)], active, EMPTY2);
1565	idles [idlecnt - 1] = w;	2361	idles [ABSPRI (w)][active - 1] = w;
		2362	}
1566	}	2363	}
1567		2364
1568	void	2365	void
1569	ev_idle_stop (EV_P_ ev_idle *w)	2366	ev_idle_stop (EV_P_ ev_idle *w)
1570	{	2367	{
1571	ev_clear_pending (EV_A_ (W)w);	2368	clear_pending (EV_A_ (W)w);
1572	if (expect_false (!ev_is_active (w)))	2369	if (expect_false (!ev_is_active (w)))
1573	return;	2370	return;
1574		2371
1575	{	2372	{
1576	int active = ((W)w)->active;	2373	int active = ((W)w)->active;
1577	idles [active - 1] = idles [--idlecnt];	2374
		2375	idles [ABSPRI (w)][active - 1] = idles [ABSPRI (w)][--idlecnt [ABSPRI (w)]];
1578	((W)idles [active - 1])->active = active;	2376	((W)idles [ABSPRI (w)][active - 1])->active = active;
		2377
		2378	ev_stop (EV_A_ (W)w);
		2379	--idleall;
1579	}	2380	}
1580
1581	ev_stop (EV_A_ (W)w);
1582	}	2381	}
		2382	#endif
1583		2383
1584	void	2384	void
1585	ev_prepare_start (EV_P_ ev_prepare *w)	2385	ev_prepare_start (EV_P_ ev_prepare *w)
1586	{	2386	{
1587	if (expect_false (ev_is_active (w)))	2387	if (expect_false (ev_is_active (w)))
…		…
1593	}	2393	}
1594		2394
1595	void	2395	void
1596	ev_prepare_stop (EV_P_ ev_prepare *w)	2396	ev_prepare_stop (EV_P_ ev_prepare *w)
1597	{	2397	{
1598	ev_clear_pending (EV_A_ (W)w);	2398	clear_pending (EV_A_ (W)w);
1599	if (expect_false (!ev_is_active (w)))	2399	if (expect_false (!ev_is_active (w)))
1600	return;	2400	return;
1601		2401
1602	{	2402	{
1603	int active = ((W)w)->active;	2403	int active = ((W)w)->active;
…		…
1620	}	2420	}
1621		2421
1622	void	2422	void
1623	ev_check_stop (EV_P_ ev_check *w)	2423	ev_check_stop (EV_P_ ev_check *w)
1624	{	2424	{
1625	ev_clear_pending (EV_A_ (W)w);	2425	clear_pending (EV_A_ (W)w);
1626	if (expect_false (!ev_is_active (w)))	2426	if (expect_false (!ev_is_active (w)))
1627	return;	2427	return;
1628		2428
1629	{	2429	{
1630	int active = ((W)w)->active;	2430	int active = ((W)w)->active;
…		…
1633	}	2433	}
1634		2434
1635	ev_stop (EV_A_ (W)w);	2435	ev_stop (EV_A_ (W)w);
1636	}	2436	}
1637		2437
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	2438	#if EV_EMBED_ENABLE
1710	void noinline	2439	void noinline
1711	ev_embed_sweep (EV_P_ ev_embed *w)	2440	ev_embed_sweep (EV_P_ ev_embed *w)
1712	{	2441	{
1713	ev_loop (w->loop, EVLOOP_NONBLOCK);	2442	ev_loop (w->other, EVLOOP_NONBLOCK);
1714	}	2443	}
1715		2444
1716	static void	2445	static void
1717	embed_cb (EV_P_ ev_io *io, int revents)	2446	embed_io_cb (EV_P_ ev_io *io, int revents)
1718	{	2447	{
1719	ev_embed *w = (ev_embed *)(((char *)io) - offsetof (ev_embed, io));	2448	ev_embed *w = (ev_embed *)(((char *)io) - offsetof (ev_embed, io));
1720		2449
1721	if (ev_cb (w))	2450	if (ev_cb (w))
1722	ev_feed_event (EV_A_ (W)w, EV_EMBED);	2451	ev_feed_event (EV_A_ (W)w, EV_EMBED);
1723	else	2452	else
1724	ev_embed_sweep (loop, w);	2453	ev_loop (w->other, EVLOOP_NONBLOCK);
1725	}	2454	}
		2455
		2456	static void
		2457	embed_prepare_cb (EV_P_ ev_prepare *prepare, int revents)
		2458	{
		2459	ev_embed *w = (ev_embed *)(((char *)prepare) - offsetof (ev_embed, prepare));
		2460
		2461	{
		2462	struct ev_loop *loop = w->other;
		2463
		2464	while (fdchangecnt)
		2465	{
		2466	fd_reify (EV_A);
		2467	ev_loop (EV_A_ EVLOOP_NONBLOCK);
		2468	}
		2469	}
		2470	}
		2471
		2472	#if 0
		2473	static void
		2474	embed_idle_cb (EV_P_ ev_idle *idle, int revents)
		2475	{
		2476	ev_idle_stop (EV_A_ idle);
		2477	}
		2478	#endif
1726		2479
1727	void	2480	void
1728	ev_embed_start (EV_P_ ev_embed *w)	2481	ev_embed_start (EV_P_ ev_embed *w)
1729	{	2482	{
1730	if (expect_false (ev_is_active (w)))	2483	if (expect_false (ev_is_active (w)))
1731	return;	2484	return;
1732		2485
1733	{	2486	{
1734	struct ev_loop *loop = w->loop;	2487	struct ev_loop *loop = w->other;
1735	assert (("loop to be embedded is not embeddable", backend & ev_embeddable_backends ()));	2488	assert (("loop to be embedded is not embeddable", backend & ev_embeddable_backends ()));
1736	ev_io_init (&w->io, embed_cb, backend_fd, EV_READ);	2489	ev_io_init (&w->io, embed_io_cb, backend_fd, EV_READ);
1737	}	2490	}
1738		2491
1739	ev_set_priority (&w->io, ev_priority (w));	2492	ev_set_priority (&w->io, ev_priority (w));
1740	ev_io_start (EV_A_ &w->io);	2493	ev_io_start (EV_A_ &w->io);
1741		2494
		2495	ev_prepare_init (&w->prepare, embed_prepare_cb);
		2496	ev_set_priority (&w->prepare, EV_MINPRI);
		2497	ev_prepare_start (EV_A_ &w->prepare);
		2498
		2499	/*ev_idle_init (&w->idle, e,bed_idle_cb);*/
		2500
1742	ev_start (EV_A_ (W)w, 1);	2501	ev_start (EV_A_ (W)w, 1);
1743	}	2502	}
1744		2503
1745	void	2504	void
1746	ev_embed_stop (EV_P_ ev_embed *w)	2505	ev_embed_stop (EV_P_ ev_embed *w)
1747	{	2506	{
1748	ev_clear_pending (EV_A_ (W)w);	2507	clear_pending (EV_A_ (W)w);
1749	if (expect_false (!ev_is_active (w)))	2508	if (expect_false (!ev_is_active (w)))
1750	return;	2509	return;
1751		2510
1752	ev_io_stop (EV_A_ &w->io);	2511	ev_io_stop (EV_A_ &w->io);
		2512	ev_prepare_stop (EV_A_ &w->prepare);
1753		2513
1754	ev_stop (EV_A_ (W)w);	2514	ev_stop (EV_A_ (W)w);
1755	}	2515	}
1756	#endif	2516	#endif
1757		2517
1758	#if EV_STAT_ENABLE	2518	#if EV_FORK_ENABLE
1759
1760	# ifdef _WIN32
1761	# define lstat(a,b) stat(a,b)
1762	# endif
1763
1764	void	2519	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)	2520	ev_fork_start (EV_P_ ev_fork *w)
1789	{	2521	{
1790	if (expect_false (ev_is_active (w)))	2522	if (expect_false (ev_is_active (w)))
1791	return;	2523	return;
1792		2524
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);	2525	ev_start (EV_A_ (W)w, ++forkcnt);
		2526	array_needsize (ev_fork *, forks, forkmax, forkcnt, EMPTY2);
		2527	forks [forkcnt - 1] = w;
1804	}	2528	}
1805		2529
1806	void	2530	void
1807	ev_stat_stop (EV_P_ ev_stat *w)	2531	ev_fork_stop (EV_P_ ev_fork *w)
1808	{	2532	{
1809	ev_clear_pending (EV_A_ (W)w);	2533	clear_pending (EV_A_ (W)w);
1810	if (expect_false (!ev_is_active (w)))	2534	if (expect_false (!ev_is_active (w)))
1811	return;	2535	return;
1812		2536
1813	ev_timer_stop (EV_A_ &w->timer);	2537	{
		2538	int active = ((W)w)->active;
		2539	forks [active - 1] = forks [--forkcnt];
		2540	((W)forks [active - 1])->active = active;
		2541	}
1814		2542
1815	ev_stop (EV_A_ (W)w);	2543	ev_stop (EV_A_ (W)w);
		2544	}
		2545	#endif
		2546
		2547	#if EV_ASYNC_ENABLE
		2548	void
		2549	ev_async_start (EV_P_ ev_async *w)
		2550	{
		2551	if (expect_false (ev_is_active (w)))
		2552	return;
		2553
		2554	evpipe_init (EV_A);
		2555
		2556	ev_start (EV_A_ (W)w, ++asynccnt);
		2557	array_needsize (ev_async *, asyncs, asyncmax, asynccnt, EMPTY2);
		2558	asyncs [asynccnt - 1] = w;
		2559	}
		2560
		2561	void
		2562	ev_async_stop (EV_P_ ev_async *w)
		2563	{
		2564	clear_pending (EV_A_ (W)w);
		2565	if (expect_false (!ev_is_active (w)))
		2566	return;
		2567
		2568	{
		2569	int active = ((W)w)->active;
		2570	asyncs [active - 1] = asyncs [--asynccnt];
		2571	((W)asyncs [active - 1])->active = active;
		2572	}
		2573
		2574	ev_stop (EV_A_ (W)w);
		2575	}
		2576
		2577	void
		2578	ev_async_send (EV_P_ ev_async *w)
		2579	{
		2580	w->sent = 1;
		2581	evpipe_write (EV_A_ &gotasync);
1816	}	2582	}
1817	#endif	2583	#endif
1818		2584
1819	/*****************************************************************************/	2585	/*****************************************************************************/
1820		2586
…		…
1878	ev_timer_set (&once->to, timeout, 0.);	2644	ev_timer_set (&once->to, timeout, 0.);
1879	ev_timer_start (EV_A_ &once->to);	2645	ev_timer_start (EV_A_ &once->to);
1880	}	2646	}
1881	}	2647	}
1882		2648
		2649	#if EV_MULTIPLICITY
		2650	#include "ev_wrap.h"
		2651	#endif
		2652
1883	#ifdef __cplusplus	2653	#ifdef __cplusplus
1884	}	2654	}
1885	#endif	2655	#endif
1886		2656

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