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Comparing libev/ev.c (file contents):
Revision 1.131 by root, Fri Nov 23 05:43:45 2007 UTC vs.
Revision 1.217 by root, Sat Mar 22 13:42:45 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
36	#ifndef EV_STANDALONE	44	#ifndef EV_STANDALONE
		45	# ifdef EV_CONFIG_H
		46	# include EV_CONFIG_H
		47	# else
37	# include "config.h"	48	# include "config.h"
		49	# endif
38		50
39	# if HAVE_CLOCK_GETTIME	51	# if HAVE_CLOCK_GETTIME
40	# ifndef EV_USE_MONOTONIC	52	# ifndef EV_USE_MONOTONIC
41	# define EV_USE_MONOTONIC 1	53	# define EV_USE_MONOTONIC 1
42	# endif	54	# endif
…		…
47	# ifndef EV_USE_MONOTONIC	59	# ifndef EV_USE_MONOTONIC
48	# define EV_USE_MONOTONIC 0	60	# define EV_USE_MONOTONIC 0
49	# endif	61	# endif
50	# ifndef EV_USE_REALTIME	62	# ifndef EV_USE_REALTIME
51	# define EV_USE_REALTIME 0	63	# define EV_USE_REALTIME 0
		64	# endif
		65	# endif
		66
		67	# ifndef EV_USE_NANOSLEEP
		68	# if HAVE_NANOSLEEP
		69	# define EV_USE_NANOSLEEP 1
		70	# else
		71	# define EV_USE_NANOSLEEP 0
52	# endif	72	# endif
53	# endif	73	# endif
54		74
55	# ifndef EV_USE_SELECT	75	# ifndef EV_USE_SELECT
56	# if HAVE_SELECT && HAVE_SYS_SELECT_H	76	# if HAVE_SELECT && HAVE_SYS_SELECT_H
…		…
90	# else	110	# else
91	# define EV_USE_PORT 0	111	# define EV_USE_PORT 0
92	# endif	112	# endif
93	# endif	113	# endif
94		114
		115	# ifndef EV_USE_INOTIFY
		116	# if HAVE_INOTIFY_INIT && HAVE_SYS_INOTIFY_H
		117	# define EV_USE_INOTIFY 1
		118	# else
		119	# define EV_USE_INOTIFY 0
		120	# endif
		121	# endif
		122
95	#endif	123	#endif
96		124
97	#include <math.h>	125	#include <math.h>
98	#include <stdlib.h>	126	#include <stdlib.h>
99	#include <fcntl.h>	127	#include <fcntl.h>
…		…
106	#include <sys/types.h>	134	#include <sys/types.h>
107	#include <time.h>	135	#include <time.h>
108		136
109	#include <signal.h>	137	#include <signal.h>
110		138
		139	#ifdef EV_H
		140	# include EV_H
		141	#else
		142	# include "ev.h"
		143	#endif
		144
111	#ifndef _WIN32	145	#ifndef _WIN32
112	# include <unistd.h>
113	# include <sys/time.h>	146	# include <sys/time.h>
114	# include <sys/wait.h>	147	# include <sys/wait.h>
		148	# include <unistd.h>
115	#else	149	#else
116	# define WIN32_LEAN_AND_MEAN	150	# define WIN32_LEAN_AND_MEAN
117	# include <windows.h>	151	# include <windows.h>
118	# ifndef EV_SELECT_IS_WINSOCKET	152	# ifndef EV_SELECT_IS_WINSOCKET
119	# define EV_SELECT_IS_WINSOCKET 1	153	# define EV_SELECT_IS_WINSOCKET 1
…		…
128		162
129	#ifndef EV_USE_REALTIME	163	#ifndef EV_USE_REALTIME
130	# define EV_USE_REALTIME 0	164	# define EV_USE_REALTIME 0
131	#endif	165	#endif
132		166
		167	#ifndef EV_USE_NANOSLEEP
		168	# define EV_USE_NANOSLEEP 0
		169	#endif
		170
133	#ifndef EV_USE_SELECT	171	#ifndef EV_USE_SELECT
134	# define EV_USE_SELECT 1	172	# define EV_USE_SELECT 1
135	#endif	173	#endif
136		174
137	#ifndef EV_USE_POLL	175	#ifndef EV_USE_POLL
…		…
152		190
153	#ifndef EV_USE_PORT	191	#ifndef EV_USE_PORT
154	# define EV_USE_PORT 0	192	# define EV_USE_PORT 0
155	#endif	193	#endif
156		194
		195	#ifndef EV_USE_INOTIFY
		196	# define EV_USE_INOTIFY 0
		197	#endif
		198
		199	#ifndef EV_PID_HASHSIZE
		200	# if EV_MINIMAL
		201	# define EV_PID_HASHSIZE 1
		202	# else
		203	# define EV_PID_HASHSIZE 16
		204	# endif
		205	#endif
		206
		207	#ifndef EV_INOTIFY_HASHSIZE
		208	# if EV_MINIMAL
		209	# define EV_INOTIFY_HASHSIZE 1
		210	# else
		211	# define EV_INOTIFY_HASHSIZE 16
		212	# endif
		213	#endif
		214
157	/**/	215	/**/
158		216
159	#ifndef CLOCK_MONOTONIC	217	#ifndef CLOCK_MONOTONIC
160	# undef EV_USE_MONOTONIC	218	# undef EV_USE_MONOTONIC
161	# define EV_USE_MONOTONIC 0	219	# define EV_USE_MONOTONIC 0
…		…
164	#ifndef CLOCK_REALTIME	222	#ifndef CLOCK_REALTIME
165	# undef EV_USE_REALTIME	223	# undef EV_USE_REALTIME
166	# define EV_USE_REALTIME 0	224	# define EV_USE_REALTIME 0
167	#endif	225	#endif
168		226
		227	#if !EV_STAT_ENABLE
		228	# undef EV_USE_INOTIFY
		229	# define EV_USE_INOTIFY 0
		230	#endif
		231
		232	#if !EV_USE_NANOSLEEP
		233	# ifndef _WIN32
		234	# include <sys/select.h>
		235	# endif
		236	#endif
		237
		238	#if EV_USE_INOTIFY
		239	# include <sys/inotify.h>
		240	#endif
		241
169	#if EV_SELECT_IS_WINSOCKET	242	#if EV_SELECT_IS_WINSOCKET
170	# include <winsock.h>	243	# include <winsock.h>
171	#endif	244	#endif
172		245
173	/**/	246	/**/
174		247
		248	/*
		249	* This is used to avoid floating point rounding problems.
		250	* It is added to ev_rt_now when scheduling periodics
		251	* to ensure progress, time-wise, even when rounding
		252	* errors are against us.
		253	* This value is good at least till the year 4000.
		254	* Better solutions welcome.
		255	*/
		256	#define TIME_EPSILON 0.0001220703125 /* 1/8192 */
		257
175	#define MIN_TIMEJUMP 1. /* minimum timejump that gets detected (if monotonic clock available) */	258	#define MIN_TIMEJUMP 1. /* minimum timejump that gets detected (if monotonic clock available) */
176	#define MAX_BLOCKTIME 59.743 /* never wait longer than this time (to detect time jumps) */	259	#define MAX_BLOCKTIME 59.743 /* never wait longer than this time (to detect time jumps) */
177	#define PID_HASHSIZE 16 /* size of pid hash table, must be power of two */
178	/*#define CLEANUP_INTERVAL (MAX_BLOCKTIME * 5.) /* how often to try to free memory and re-check fds */	260	/*#define CLEANUP_INTERVAL (MAX_BLOCKTIME * 5.) /* how often to try to free memory and re-check fds, TODO */
179		261
180	#ifdef EV_H
181	# include EV_H
182	#else
183	# include "ev.h"
184	#endif
185
186	#if __GNUC__ >= 3	262	#if __GNUC__ >= 4
187	# define expect(expr,value) __builtin_expect ((expr),(value))	263	# define expect(expr,value) __builtin_expect ((expr),(value))
188	# define inline static inline	264	# define noinline __attribute__ ((noinline))
189	#else	265	#else
190	# define expect(expr,value) (expr)	266	# define expect(expr,value) (expr)
191	# define inline static	267	# define noinline
		268	# if __STDC_VERSION__ < 199901L
		269	# define inline
		270	# endif
192	#endif	271	#endif
193		272
194	#define expect_false(expr) expect ((expr) != 0, 0)	273	#define expect_false(expr) expect ((expr) != 0, 0)
195	#define expect_true(expr) expect ((expr) != 0, 1)	274	#define expect_true(expr) expect ((expr) != 0, 1)
		275	#define inline_size static inline
		276
		277	#if EV_MINIMAL
		278	# define inline_speed static noinline
		279	#else
		280	# define inline_speed static inline
		281	#endif
196		282
197	#define NUMPRI (EV_MAXPRI - EV_MINPRI + 1)	283	#define NUMPRI (EV_MAXPRI - EV_MINPRI + 1)
198	#define ABSPRI(w) ((w)->priority - EV_MINPRI)	284	#define ABSPRI(w) (((W)w)->priority - EV_MINPRI)
199		285
200	#define EMPTY0 /* required for microsofts broken pseudo-c compiler */	286	#define EMPTY /* required for microsofts broken pseudo-c compiler */
201	#define EMPTY2(a,b) /* used to suppress some warnings */	287	#define EMPTY2(a,b) /* used to suppress some warnings */
202		288
203	typedef struct ev_watcher *W;	289	typedef ev_watcher *W;
204	typedef struct ev_watcher_list *WL;	290	typedef ev_watcher_list *WL;
205	typedef struct ev_watcher_time *WT;	291	typedef ev_watcher_time *WT;
206		292
		293	#if EV_USE_MONOTONIC
		294	/* sig_atomic_t is used to avoid per-thread variables or locking but still */
		295	/* giving it a reasonably high chance of working on typical architetcures */
207	static int have_monotonic; /* did clock_gettime (CLOCK_MONOTONIC) work? */	296	static EV_ATOMIC_T have_monotonic; /* did clock_gettime (CLOCK_MONOTONIC) work? */
		297	#endif
208		298
209	#ifdef _WIN32	299	#ifdef _WIN32
210	# include "ev_win32.c"	300	# include "ev_win32.c"
211	#endif	301	#endif
212		302
213	/*****************************************************************************/	303	/*****************************************************************************/
214		304
215	static void (*syserr_cb)(const char *msg);	305	static void (*syserr_cb)(const char *msg);
216		306
		307	void
217	void ev_set_syserr_cb (void (*cb)(const char *msg))	308	ev_set_syserr_cb (void (*cb)(const char *msg))
218	{	309	{
219	syserr_cb = cb;	310	syserr_cb = cb;
220	}	311	}
221		312
222	static void	313	static void noinline
223	syserr (const char *msg)	314	syserr (const char *msg)
224	{	315	{
225	if (!msg)	316	if (!msg)
226	msg = "(libev) system error";	317	msg = "(libev) system error";
227		318
…		…
234	}	325	}
235	}	326	}
236		327
237	static void *(*alloc)(void *ptr, long size);	328	static void *(*alloc)(void *ptr, long size);
238		329
		330	void
239	void ev_set_allocator (void *(*cb)(void *ptr, long size))	331	ev_set_allocator (void *(*cb)(void *ptr, long size))
240	{	332	{
241	alloc = cb;	333	alloc = cb;
242	}	334	}
243		335
244	static void *	336	inline_speed void *
245	ev_realloc (void *ptr, long size)	337	ev_realloc (void *ptr, long size)
246	{	338	{
247	ptr = alloc ? alloc (ptr, size) : realloc (ptr, size);	339	ptr = alloc ? alloc (ptr, size) : realloc (ptr, size);
248		340
249	if (!ptr && size)	341	if (!ptr && size)
…		…
273	typedef struct	365	typedef struct
274	{	366	{
275	W w;	367	W w;
276	int events;	368	int events;
277	} ANPENDING;	369	} ANPENDING;
		370
		371	#if EV_USE_INOTIFY
		372	typedef struct
		373	{
		374	WL head;
		375	} ANFS;
		376	#endif
278		377
279	#if EV_MULTIPLICITY	378	#if EV_MULTIPLICITY
280		379
281	struct ev_loop	380	struct ev_loop
282	{	381	{
…		…
316	gettimeofday (&tv, 0);	415	gettimeofday (&tv, 0);
317	return tv.tv_sec + tv.tv_usec * 1e-6;	416	return tv.tv_sec + tv.tv_usec * 1e-6;
318	#endif	417	#endif
319	}	418	}
320		419
321	inline ev_tstamp	420	ev_tstamp inline_size
322	get_clock (void)	421	get_clock (void)
323	{	422	{
324	#if EV_USE_MONOTONIC	423	#if EV_USE_MONOTONIC
325	if (expect_true (have_monotonic))	424	if (expect_true (have_monotonic))
326	{	425	{
…		…
339	{	438	{
340	return ev_rt_now;	439	return ev_rt_now;
341	}	440	}
342	#endif	441	#endif
343		442
344	#define array_roundsize(type,n) (((n) | 4) & ~3)	443	void
		444	ev_sleep (ev_tstamp delay)
		445	{
		446	if (delay > 0.)
		447	{
		448	#if EV_USE_NANOSLEEP
		449	struct timespec ts;
		450
		451	ts.tv_sec = (time_t)delay;
		452	ts.tv_nsec = (long)((delay - (ev_tstamp)(ts.tv_sec)) * 1e9);
		453
		454	nanosleep (&ts, 0);
		455	#elif defined(_WIN32)
		456	Sleep ((unsigned long)(delay * 1e3));
		457	#else
		458	struct timeval tv;
		459
		460	tv.tv_sec = (time_t)delay;
		461	tv.tv_usec = (long)((delay - (ev_tstamp)(tv.tv_sec)) * 1e6);
		462
		463	select (0, 0, 0, 0, &tv);
		464	#endif
		465	}
		466	}
		467
		468	/*****************************************************************************/
		469
		470	int inline_size
		471	array_nextsize (int elem, int cur, int cnt)
		472	{
		473	int ncur = cur + 1;
		474
		475	do
		476	ncur <<= 1;
		477	while (cnt > ncur);
		478
		479	/* if size > 4096, round to 4096 - 4 * longs to accomodate malloc overhead */
		480	if (elem * ncur > 4096)
		481	{
		482	ncur *= elem;
		483	ncur = (ncur + elem + 4095 + sizeof (void *) * 4) & ~4095;
		484	ncur = ncur - sizeof (void *) * 4;
		485	ncur /= elem;
		486	}
		487
		488	return ncur;
		489	}
		490
		491	static noinline void *
		492	array_realloc (int elem, void *base, int *cur, int cnt)
		493	{
		494	*cur = array_nextsize (elem, *cur, cnt);
		495	return ev_realloc (base, elem * *cur);
		496	}
345		497
346	#define array_needsize(type,base,cur,cnt,init) \	498	#define array_needsize(type,base,cur,cnt,init) \
347	if (expect_false ((cnt) > cur)) \	499	if (expect_false ((cnt) > (cur))) \
348	{ \	500	{ \
349	int newcnt = cur; \	501	int ocur_ = (cur); \
350	do \	502	(base) = (type *)array_realloc \
351	{ \	503	(sizeof (type), (base), &(cur), (cnt)); \
352	newcnt = array_roundsize (type, newcnt << 1); \	504	init ((base) + (ocur_), (cur) - ocur_); \
353	} \
354	while ((cnt) > newcnt); \
355	\
356	base = (type *)ev_realloc (base, sizeof (type) * (newcnt));\
357	init (base + cur, newcnt - cur); \
358	cur = newcnt; \
359	}	505	}
360		506
		507	#if 0
361	#define array_slim(type,stem) \	508	#define array_slim(type,stem) \
362	if (stem ## max < array_roundsize (stem ## cnt >> 2)) \	509	if (stem ## max < array_roundsize (stem ## cnt >> 2)) \
363	{ \	510	{ \
364	stem ## max = array_roundsize (stem ## cnt >> 1); \	511	stem ## max = array_roundsize (stem ## cnt >> 1); \
365	base = (type *)ev_realloc (base, sizeof (type) * (stem ## max));\	512	base = (type *)ev_realloc (base, sizeof (type) * (stem ## max));\
366	fprintf (stderr, "slimmed down " # stem " to %d\n", stem ## max);/*D*/\	513	fprintf (stderr, "slimmed down " # stem " to %d\n", stem ## max);/*D*/\
367	}	514	}
		515	#endif
368		516
369	#define array_free(stem, idx) \	517	#define array_free(stem, idx) \
370	ev_free (stem ## s idx); stem ## cnt idx = stem ## max idx = 0;	518	ev_free (stem ## s idx); stem ## cnt idx = stem ## max idx = 0;
371		519
372	/*****************************************************************************/	520	/*****************************************************************************/
373		521
374	static void	522	void noinline
		523	ev_feed_event (EV_P_ void *w, int revents)
		524	{
		525	W w_ = (W)w;
		526	int pri = ABSPRI (w_);
		527
		528	if (expect_false (w_->pending))
		529	pendings [pri][w_->pending - 1].events |= revents;
		530	else
		531	{
		532	w_->pending = ++pendingcnt [pri];
		533	array_needsize (ANPENDING, pendings [pri], pendingmax [pri], w_->pending, EMPTY2);
		534	pendings [pri][w_->pending - 1].w = w_;
		535	pendings [pri][w_->pending - 1].events = revents;
		536	}
		537	}
		538
		539	void inline_speed
		540	queue_events (EV_P_ W *events, int eventcnt, int type)
		541	{
		542	int i;
		543
		544	for (i = 0; i < eventcnt; ++i)
		545	ev_feed_event (EV_A_ events [i], type);
		546	}
		547
		548	/*****************************************************************************/
		549
		550	void inline_size
375	anfds_init (ANFD *base, int count)	551	anfds_init (ANFD *base, int count)
376	{	552	{
377	while (count--)	553	while (count--)
378	{	554	{
379	base->head = 0;	555	base->head = 0;
…		…
382		558
383	++base;	559	++base;
384	}	560	}
385	}	561	}
386		562
387	void	563	void inline_speed
388	ev_feed_event (EV_P_ void *w, int revents)
389	{
390	W w_ = (W)w;
391
392	if (expect_false (w_->pending))
393	{
394	pendings [ABSPRI (w_)][w_->pending - 1].events |= revents;
395	return;
396	}
397
398	w_->pending = ++pendingcnt [ABSPRI (w_)];
399	array_needsize (ANPENDING, pendings [ABSPRI (w_)], pendingmax [ABSPRI (w_)], pendingcnt [ABSPRI (w_)], EMPTY2);
400	pendings [ABSPRI (w_)][w_->pending - 1].w = w_;
401	pendings [ABSPRI (w_)][w_->pending - 1].events = revents;
402	}
403
404	static void
405	queue_events (EV_P_ W *events, int eventcnt, int type)
406	{
407	int i;
408
409	for (i = 0; i < eventcnt; ++i)
410	ev_feed_event (EV_A_ events [i], type);
411	}
412
413	inline void
414	fd_event (EV_P_ int fd, int revents)	564	fd_event (EV_P_ int fd, int revents)
415	{	565	{
416	ANFD *anfd = anfds + fd;	566	ANFD *anfd = anfds + fd;
417	struct ev_io *w;	567	ev_io *w;
418		568
419	for (w = (struct ev_io *)anfd->head; w; w = (struct ev_io *)((WL)w)->next)	569	for (w = (ev_io *)anfd->head; w; w = (ev_io *)((WL)w)->next)
420	{	570	{
421	int ev = w->events & revents;	571	int ev = w->events & revents;
422		572
423	if (ev)	573	if (ev)
424	ev_feed_event (EV_A_ (W)w, ev);	574	ev_feed_event (EV_A_ (W)w, ev);
…		…
426	}	576	}
427		577
428	void	578	void
429	ev_feed_fd_event (EV_P_ int fd, int revents)	579	ev_feed_fd_event (EV_P_ int fd, int revents)
430	{	580	{
		581	if (fd >= 0 && fd < anfdmax)
431	fd_event (EV_A_ fd, revents);	582	fd_event (EV_A_ fd, revents);
432	}	583	}
433		584
434	/*****************************************************************************/	585	void inline_size
435
436	inline void
437	fd_reify (EV_P)	586	fd_reify (EV_P)
438	{	587	{
439	int i;	588	int i;
440		589
441	for (i = 0; i < fdchangecnt; ++i)	590	for (i = 0; i < fdchangecnt; ++i)
442	{	591	{
443	int fd = fdchanges [i];	592	int fd = fdchanges [i];
444	ANFD *anfd = anfds + fd;	593	ANFD *anfd = anfds + fd;
445	struct ev_io *w;	594	ev_io *w;
446		595
447	int events = 0;	596	unsigned char events = 0;
448		597
449	for (w = (struct ev_io *)anfd->head; w; w = (struct ev_io *)((WL)w)->next)	598	for (w = (ev_io *)anfd->head; w; w = (ev_io *)((WL)w)->next)
450	events |= w->events;	599	events |= (unsigned char)w->events;
451		600
452	#if EV_SELECT_IS_WINSOCKET	601	#if EV_SELECT_IS_WINSOCKET
453	if (events)	602	if (events)
454	{	603	{
455	unsigned long argp;	604	unsigned long argp;
		605	#ifdef EV_FD_TO_WIN32_HANDLE
		606	anfd->handle = EV_FD_TO_WIN32_HANDLE (fd);
		607	#else
456	anfd->handle = _get_osfhandle (fd);	608	anfd->handle = _get_osfhandle (fd);
		609	#endif
457	assert (("libev only supports socket fds in this configuration", ioctlsocket (anfd->handle, FIONREAD, &argp) == 0));	610	assert (("libev only supports socket fds in this configuration", ioctlsocket (anfd->handle, FIONREAD, &argp) == 0));
458	}	611	}
459	#endif	612	#endif
460		613
		614	{
		615	unsigned char o_events = anfd->events;
		616	unsigned char o_reify = anfd->reify;
		617
461	anfd->reify = 0;	618	anfd->reify = 0;
462
463	backend_modify (EV_A_ fd, anfd->events, events);
464	anfd->events = events;	619	anfd->events = events;
		620
		621	if (o_events != events || o_reify & EV_IOFDSET)
		622	backend_modify (EV_A_ fd, o_events, events);
		623	}
465	}	624	}
466		625
467	fdchangecnt = 0;	626	fdchangecnt = 0;
468	}	627	}
469		628
470	static void	629	void inline_size
471	fd_change (EV_P_ int fd)	630	fd_change (EV_P_ int fd, int flags)
472	{	631	{
473	if (expect_false (anfds [fd].reify))	632	unsigned char reify = anfds [fd].reify;
474	return;
475
476	anfds [fd].reify = 1;	633	anfds [fd].reify |= flags;
477		634
		635	if (expect_true (!reify))
		636	{
478	++fdchangecnt;	637	++fdchangecnt;
479	array_needsize (int, fdchanges, fdchangemax, fdchangecnt, EMPTY2);	638	array_needsize (int, fdchanges, fdchangemax, fdchangecnt, EMPTY2);
480	fdchanges [fdchangecnt - 1] = fd;	639	fdchanges [fdchangecnt - 1] = fd;
		640	}
481	}	641	}
482		642
483	static void	643	void inline_speed
484	fd_kill (EV_P_ int fd)	644	fd_kill (EV_P_ int fd)
485	{	645	{
486	struct ev_io *w;	646	ev_io *w;
487		647
488	while ((w = (struct ev_io *)anfds [fd].head))	648	while ((w = (ev_io *)anfds [fd].head))
489	{	649	{
490	ev_io_stop (EV_A_ w);	650	ev_io_stop (EV_A_ w);
491	ev_feed_event (EV_A_ (W)w, EV_ERROR | EV_READ | EV_WRITE);	651	ev_feed_event (EV_A_ (W)w, EV_ERROR | EV_READ | EV_WRITE);
492	}	652	}
493	}	653	}
494		654
495	inline int	655	int inline_size
496	fd_valid (int fd)	656	fd_valid (int fd)
497	{	657	{
498	#ifdef _WIN32	658	#ifdef _WIN32
499	return _get_osfhandle (fd) != -1;	659	return _get_osfhandle (fd) != -1;
500	#else	660	#else
501	return fcntl (fd, F_GETFD) != -1;	661	return fcntl (fd, F_GETFD) != -1;
502	#endif	662	#endif
503	}	663	}
504		664
505	/* called on EBADF to verify fds */	665	/* called on EBADF to verify fds */
506	static void	666	static void noinline
507	fd_ebadf (EV_P)	667	fd_ebadf (EV_P)
508	{	668	{
509	int fd;	669	int fd;
510		670
511	for (fd = 0; fd < anfdmax; ++fd)	671	for (fd = 0; fd < anfdmax; ++fd)
…		…
513	if (!fd_valid (fd) == -1 && errno == EBADF)	673	if (!fd_valid (fd) == -1 && errno == EBADF)
514	fd_kill (EV_A_ fd);	674	fd_kill (EV_A_ fd);
515	}	675	}
516		676
517	/* called on ENOMEM in select/poll to kill some fds and retry */	677	/* called on ENOMEM in select/poll to kill some fds and retry */
518	static void	678	static void noinline
519	fd_enomem (EV_P)	679	fd_enomem (EV_P)
520	{	680	{
521	int fd;	681	int fd;
522		682
523	for (fd = anfdmax; fd--; )	683	for (fd = anfdmax; fd--; )
…		…
527	return;	687	return;
528	}	688	}
529	}	689	}
530		690
531	/* usually called after fork if backend needs to re-arm all fds from scratch */	691	/* usually called after fork if backend needs to re-arm all fds from scratch */
532	static void	692	static void noinline
533	fd_rearm_all (EV_P)	693	fd_rearm_all (EV_P)
534	{	694	{
535	int fd;	695	int fd;
536		696
537	/* this should be highly optimised to not do anything but set a flag */
538	for (fd = 0; fd < anfdmax; ++fd)	697	for (fd = 0; fd < anfdmax; ++fd)
539	if (anfds [fd].events)	698	if (anfds [fd].events)
540	{	699	{
541	anfds [fd].events = 0;	700	anfds [fd].events = 0;
542	fd_change (EV_A_ fd);	701	fd_change (EV_A_ fd, EV_IOFDSET | 1);
543	}	702	}
544	}	703	}
545		704
546	/*****************************************************************************/	705	/*****************************************************************************/
547		706
548	static void	707	void inline_speed
549	upheap (WT *heap, int k)	708	upheap (WT *heap, int k)
550	{	709	{
551	WT w = heap [k];	710	WT w = heap [k];
552		711
553	while (k && heap [k >> 1]->at > w->at)	712	while (k)
554	{	713	{
		714	int p = (k - 1) >> 1;
		715
		716	if (heap [p]->at <= w->at)
		717	break;
		718
555	heap [k] = heap [k >> 1];	719	heap [k] = heap [p];
556	((W)heap [k])->active = k + 1;	720	((W)heap [k])->active = k + 1;
557	k >>= 1;	721	k = p;
558	}	722	}
559		723
560	heap [k] = w;	724	heap [k] = w;
561	((W)heap [k])->active = k + 1;	725	((W)heap [k])->active = k + 1;
562
563	}	726	}
564		727
565	static void	728	void inline_speed
566	downheap (WT *heap, int N, int k)	729	downheap (WT *heap, int N, int k)
567	{	730	{
568	WT w = heap [k];	731	WT w = heap [k];
569		732
570	while (k < (N >> 1))	733	for (;;)
571	{	734	{
572	int j = k << 1;	735	int c = (k << 1) + 1;
573		736
574	if (j + 1 < N && heap [j]->at > heap [j + 1]->at)	737	if (c >= N)
575	++j;
576
577	if (w->at <= heap [j]->at)
578	break;	738	break;
579		739
		740	c += c + 1 < N && heap [c]->at > heap [c + 1]->at
		741	? 1 : 0;
		742
		743	if (w->at <= heap [c]->at)
		744	break;
		745
580	heap [k] = heap [j];	746	heap [k] = heap [c];
581	((W)heap [k])->active = k + 1;	747	((W)heap [k])->active = k + 1;
		748
582	k = j;	749	k = c;
583	}	750	}
584		751
585	heap [k] = w;	752	heap [k] = w;
586	((W)heap [k])->active = k + 1;	753	((W)heap [k])->active = k + 1;
587	}	754	}
588		755
589	inline void	756	void inline_size
590	adjustheap (WT *heap, int N, int k)	757	adjustheap (WT *heap, int N, int k)
591	{	758	{
592	upheap (heap, k);	759	upheap (heap, k);
593	downheap (heap, N, k);	760	downheap (heap, N, k);
594	}	761	}
…		…
596	/*****************************************************************************/	763	/*****************************************************************************/
597		764
598	typedef struct	765	typedef struct
599	{	766	{
600	WL head;	767	WL head;
601	sig_atomic_t volatile gotsig;	768	EV_ATOMIC_T gotsig;
602	} ANSIG;	769	} ANSIG;
603		770
604	static ANSIG *signals;	771	static ANSIG *signals;
605	static int signalmax;	772	static int signalmax;
606		773
607	static int sigpipe [2];	774	static EV_ATOMIC_T gotsig;
608	static sig_atomic_t volatile gotsig;
609	static struct ev_io sigev;
610		775
611	static void	776	void inline_size
612	signals_init (ANSIG *base, int count)	777	signals_init (ANSIG *base, int count)
613	{	778	{
614	while (count--)	779	while (count--)
615	{	780	{
616	base->head = 0;	781	base->head = 0;
…		…
618		783
619	++base;	784	++base;
620	}	785	}
621	}	786	}
622		787
623	static void	788	/*****************************************************************************/
624	sighandler (int signum)
625	{
626	#if _WIN32
627	signal (signum, sighandler);
628	#endif
629		789
630	signals [signum - 1].gotsig = 1;	790	void inline_speed
631
632	if (!gotsig)
633	{
634	int old_errno = errno;
635	gotsig = 1;
636	write (sigpipe [1], &signum, 1);
637	errno = old_errno;
638	}
639	}
640
641	void
642	ev_feed_signal_event (EV_P_ int signum)
643	{
644	WL w;
645
646	#if EV_MULTIPLICITY
647	assert (("feeding signal events is only supported in the default loop", loop == ev_default_loop_ptr));
648	#endif
649
650	--signum;
651
652	if (signum < 0 || signum >= signalmax)
653	return;
654
655	signals [signum].gotsig = 0;
656
657	for (w = signals [signum].head; w; w = w->next)
658	ev_feed_event (EV_A_ (W)w, EV_SIGNAL);
659	}
660
661	static void
662	sigcb (EV_P_ struct ev_io *iow, int revents)
663	{
664	int signum;
665
666	read (sigpipe [0], &revents, 1);
667	gotsig = 0;
668
669	for (signum = signalmax; signum--; )
670	if (signals [signum].gotsig)
671	ev_feed_signal_event (EV_A_ signum + 1);
672	}
673
674	static void
675	fd_intern (int fd)	791	fd_intern (int fd)
676	{	792	{
677	#ifdef _WIN32	793	#ifdef _WIN32
678	int arg = 1;	794	int arg = 1;
679	ioctlsocket (_get_osfhandle (fd), FIONBIO, &arg);	795	ioctlsocket (_get_osfhandle (fd), FIONBIO, &arg);
…		…
681	fcntl (fd, F_SETFD, FD_CLOEXEC);	797	fcntl (fd, F_SETFD, FD_CLOEXEC);
682	fcntl (fd, F_SETFL, O_NONBLOCK);	798	fcntl (fd, F_SETFL, O_NONBLOCK);
683	#endif	799	#endif
684	}	800	}
685		801
		802	static void noinline
		803	evpipe_init (EV_P)
		804	{
		805	if (!ev_is_active (&pipeev))
		806	{
		807	while (pipe (evpipe))
		808	syserr ("(libev) error creating signal/async pipe");
		809
		810	fd_intern (evpipe [0]);
		811	fd_intern (evpipe [1]);
		812
		813	ev_io_set (&pipeev, evpipe [0], EV_READ);
		814	ev_io_start (EV_A_ &pipeev);
		815	ev_unref (EV_A); /* watcher should not keep loop alive */
		816	}
		817	}
		818
		819	void inline_size
		820	evpipe_write (EV_P_ EV_ATOMIC_T *flag)
		821	{
		822	if (!*flag)
		823	{
		824	int old_errno = errno; /* save errno because write might clobber it */
		825
		826	*flag = 1;
		827	write (evpipe [1], &old_errno, 1);
		828
		829	errno = old_errno;
		830	}
		831	}
		832
686	static void	833	static void
687	siginit (EV_P)	834	pipecb (EV_P_ ev_io *iow, int revents)
688	{	835	{
689	fd_intern (sigpipe [0]);	836	{
690	fd_intern (sigpipe [1]);	837	int dummy;
		838	read (evpipe [0], &dummy, 1);
		839	}
691		840
692	ev_io_set (&sigev, sigpipe [0], EV_READ);	841	if (gotsig && ev_is_default_loop (EV_A))
693	ev_io_start (EV_A_ &sigev);	842	{
694	ev_unref (EV_A); /* child watcher should not keep loop alive */	843	int signum;
		844	gotsig = 0;
		845
		846	for (signum = signalmax; signum--; )
		847	if (signals [signum].gotsig)
		848	ev_feed_signal_event (EV_A_ signum + 1);
		849	}
		850
		851	#if EV_ASYNC_ENABLE
		852	if (gotasync)
		853	{
		854	int i;
		855	gotasync = 0;
		856
		857	for (i = asynccnt; i--; )
		858	if (asyncs [i]->sent)
		859	{
		860	asyncs [i]->sent = 0;
		861	ev_feed_event (EV_A_ asyncs [i], EV_ASYNC);
		862	}
		863	}
		864	#endif
695	}	865	}
696		866
697	/*****************************************************************************/	867	/*****************************************************************************/
698		868
699	static struct ev_child *childs [PID_HASHSIZE];	869	static void
		870	sighandler (int signum)
		871	{
		872	#if EV_MULTIPLICITY
		873	struct ev_loop *loop = &default_loop_struct;
		874	#endif
		875
		876	#if _WIN32
		877	signal (signum, sighandler);
		878	#endif
		879
		880	signals [signum - 1].gotsig = 1;
		881	evpipe_write (EV_A_ &gotsig);
		882	}
		883
		884	void noinline
		885	ev_feed_signal_event (EV_P_ int signum)
		886	{
		887	WL w;
		888
		889	#if EV_MULTIPLICITY
		890	assert (("feeding signal events is only supported in the default loop", loop == ev_default_loop_ptr));
		891	#endif
		892
		893	--signum;
		894
		895	if (signum < 0 || signum >= signalmax)
		896	return;
		897
		898	signals [signum].gotsig = 0;
		899
		900	for (w = signals [signum].head; w; w = w->next)
		901	ev_feed_event (EV_A_ (W)w, EV_SIGNAL);
		902	}
		903
		904	/*****************************************************************************/
		905
		906	static WL childs [EV_PID_HASHSIZE];
700		907
701	#ifndef _WIN32	908	#ifndef _WIN32
702		909
703	static struct ev_signal childev;	910	static ev_signal childev;
		911
		912	#ifndef WIFCONTINUED
		913	# define WIFCONTINUED(status) 0
		914	#endif
		915
		916	void inline_speed
		917	child_reap (EV_P_ int chain, int pid, int status)
		918	{
		919	ev_child *w;
		920	int traced = WIFSTOPPED (status) || WIFCONTINUED (status);
		921
		922	for (w = (ev_child *)childs [chain & (EV_PID_HASHSIZE - 1)]; w; w = (ev_child *)((WL)w)->next)
		923	{
		924	if ((w->pid == pid || !w->pid)
		925	&& (!traced || (w->flags & 1)))
		926	{
		927	ev_set_priority (w, EV_MAXPRI); /* need to do it *now*, this *must* be the same prio as the signal watcher itself */
		928	w->rpid = pid;
		929	w->rstatus = status;
		930	ev_feed_event (EV_A_ (W)w, EV_CHILD);
		931	}
		932	}
		933	}
704		934
705	#ifndef WCONTINUED	935	#ifndef WCONTINUED
706	# define WCONTINUED 0	936	# define WCONTINUED 0
707	#endif	937	#endif
708		938
709	static void	939	static void
710	child_reap (EV_P_ struct ev_signal *sw, int chain, int pid, int status)
711	{
712	struct ev_child *w;
713
714	for (w = (struct ev_child *)childs [chain & (PID_HASHSIZE - 1)]; w; w = (struct ev_child *)((WL)w)->next)
715	if (w->pid == pid || !w->pid)
716	{
717	ev_priority (w) = ev_priority (sw); /* need to do it *now* */
718	w->rpid = pid;
719	w->rstatus = status;
720	ev_feed_event (EV_A_ (W)w, EV_CHILD);
721	}
722	}
723
724	static void
725	childcb (EV_P_ struct ev_signal *sw, int revents)	940	childcb (EV_P_ ev_signal *sw, int revents)
726	{	941	{
727	int pid, status;	942	int pid, status;
728		943
		944	/* some systems define WCONTINUED but then fail to support it (linux 2.4) */
729	if (0 < (pid = waitpid (-1, &status, WNOHANG | WUNTRACED | WCONTINUED)))	945	if (0 >= (pid = waitpid (-1, &status, WNOHANG | WUNTRACED | WCONTINUED)))
730	{	946	if (!WCONTINUED
		947	|| errno != EINVAL
		948	|| 0 >= (pid = waitpid (-1, &status, WNOHANG | WUNTRACED)))
		949	return;
		950
731	/* make sure we are called again until all childs have been reaped */	951	/* make sure we are called again until all children have been reaped */
		952	/* we need to do it this way so that the callback gets called before we continue */
732	ev_feed_event (EV_A_ (W)sw, EV_SIGNAL);	953	ev_feed_event (EV_A_ (W)sw, EV_SIGNAL);
733		954
734	child_reap (EV_A_ sw, pid, pid, status);	955	child_reap (EV_A_ pid, pid, status);
		956	if (EV_PID_HASHSIZE > 1)
735	child_reap (EV_A_ sw, 0, pid, status); /* this might trigger a watcher twice, but event catches that */	957	child_reap (EV_A_ 0, pid, status); /* this might trigger a watcher twice, but feed_event catches that */
736	}
737	}	958	}
738		959
739	#endif	960	#endif
740		961
741	/*****************************************************************************/	962	/*****************************************************************************/
…		…
767	{	988	{
768	return EV_VERSION_MINOR;	989	return EV_VERSION_MINOR;
769	}	990	}
770		991
771	/* return true if we are running with elevated privileges and should ignore env variables */	992	/* return true if we are running with elevated privileges and should ignore env variables */
772	static int	993	int inline_size
773	enable_secure (void)	994	enable_secure (void)
774	{	995	{
775	#ifdef _WIN32	996	#ifdef _WIN32
776	return 0;	997	return 0;
777	#else	998	#else
…		…
811		1032
812	return flags;	1033	return flags;
813	}	1034	}
814		1035
815	unsigned int	1036	unsigned int
		1037	ev_embeddable_backends (void)
		1038	{
		1039	int flags = EVBACKEND_EPOLL | EVBACKEND_KQUEUE | EVBACKEND_PORT;
		1040
		1041	/* epoll embeddability broken on all linux versions up to at least 2.6.23 */
		1042	/* please fix it and tell me how to detect the fix */
		1043	flags &= ~EVBACKEND_EPOLL;
		1044
		1045	return flags;
		1046	}
		1047
		1048	unsigned int
816	ev_backend (EV_P)	1049	ev_backend (EV_P)
817	{	1050	{
818	return backend;	1051	return backend;
819	}	1052	}
820		1053
821	static void	1054	unsigned int
		1055	ev_loop_count (EV_P)
		1056	{
		1057	return loop_count;
		1058	}
		1059
		1060	void
		1061	ev_set_io_collect_interval (EV_P_ ev_tstamp interval)
		1062	{
		1063	io_blocktime = interval;
		1064	}
		1065
		1066	void
		1067	ev_set_timeout_collect_interval (EV_P_ ev_tstamp interval)
		1068	{
		1069	timeout_blocktime = interval;
		1070	}
		1071
		1072	static void noinline
822	loop_init (EV_P_ unsigned int flags)	1073	loop_init (EV_P_ unsigned int flags)
823	{	1074	{
824	if (!backend)	1075	if (!backend)
825	{	1076	{
826	#if EV_USE_MONOTONIC	1077	#if EV_USE_MONOTONIC
…		…
829	if (!clock_gettime (CLOCK_MONOTONIC, &ts))	1080	if (!clock_gettime (CLOCK_MONOTONIC, &ts))
830	have_monotonic = 1;	1081	have_monotonic = 1;
831	}	1082	}
832	#endif	1083	#endif
833		1084
834	ev_rt_now = ev_time ();	1085	ev_rt_now = ev_time ();
835	mn_now = get_clock ();	1086	mn_now = get_clock ();
836	now_floor = mn_now;	1087	now_floor = mn_now;
837	rtmn_diff = ev_rt_now - mn_now;	1088	rtmn_diff = ev_rt_now - mn_now;
		1089
		1090	io_blocktime = 0.;
		1091	timeout_blocktime = 0.;
		1092	backend = 0;
		1093	backend_fd = -1;
		1094	gotasync = 0;
		1095	#if EV_USE_INOTIFY
		1096	fs_fd = -2;
		1097	#endif
		1098
		1099	/* pid check not overridable via env */
		1100	#ifndef _WIN32
		1101	if (flags & EVFLAG_FORKCHECK)
		1102	curpid = getpid ();
		1103	#endif
838		1104
839	if (!(flags & EVFLAG_NOENV)	1105	if (!(flags & EVFLAG_NOENV)
840	&& !enable_secure ()	1106	&& !enable_secure ()
841	&& getenv ("LIBEV_FLAGS"))	1107	&& getenv ("LIBEV_FLAGS"))
842	flags = atoi (getenv ("LIBEV_FLAGS"));	1108	flags = atoi (getenv ("LIBEV_FLAGS"));
843		1109
844	if (!(flags & 0x0000ffffUL))	1110	if (!(flags & 0x0000ffffUL))
845	flags |= ev_recommended_backends ();	1111	flags |= ev_recommended_backends ();
846		1112
847	backend = 0;
848	#if EV_USE_PORT	1113	#if EV_USE_PORT
849	if (!backend && (flags & EVBACKEND_PORT )) backend = port_init (EV_A_ flags);	1114	if (!backend && (flags & EVBACKEND_PORT )) backend = port_init (EV_A_ flags);
850	#endif	1115	#endif
851	#if EV_USE_KQUEUE	1116	#if EV_USE_KQUEUE
852	if (!backend && (flags & EVBACKEND_KQUEUE)) backend = kqueue_init (EV_A_ flags);	1117	if (!backend && (flags & EVBACKEND_KQUEUE)) backend = kqueue_init (EV_A_ flags);
…		…
859	#endif	1124	#endif
860	#if EV_USE_SELECT	1125	#if EV_USE_SELECT
861	if (!backend && (flags & EVBACKEND_SELECT)) backend = select_init (EV_A_ flags);	1126	if (!backend && (flags & EVBACKEND_SELECT)) backend = select_init (EV_A_ flags);
862	#endif	1127	#endif
863		1128
864	ev_init (&sigev, sigcb);	1129	ev_init (&pipeev, pipecb);
865	ev_set_priority (&sigev, EV_MAXPRI);	1130	ev_set_priority (&pipeev, EV_MAXPRI);
866	}	1131	}
867	}	1132	}
868		1133
869	static void	1134	static void noinline
870	loop_destroy (EV_P)	1135	loop_destroy (EV_P)
871	{	1136	{
872	int i;	1137	int i;
		1138
		1139	if (ev_is_active (&pipeev))
		1140	{
		1141	ev_ref (EV_A); /* signal watcher */
		1142	ev_io_stop (EV_A_ &pipeev);
		1143
		1144	close (evpipe [0]); evpipe [0] = 0;
		1145	close (evpipe [1]); evpipe [1] = 0;
		1146	}
		1147
		1148	#if EV_USE_INOTIFY
		1149	if (fs_fd >= 0)
		1150	close (fs_fd);
		1151	#endif
		1152
		1153	if (backend_fd >= 0)
		1154	close (backend_fd);
873		1155
874	#if EV_USE_PORT	1156	#if EV_USE_PORT
875	if (backend == EVBACKEND_PORT ) port_destroy (EV_A);	1157	if (backend == EVBACKEND_PORT ) port_destroy (EV_A);
876	#endif	1158	#endif
877	#if EV_USE_KQUEUE	1159	#if EV_USE_KQUEUE
…		…
886	#if EV_USE_SELECT	1168	#if EV_USE_SELECT
887	if (backend == EVBACKEND_SELECT) select_destroy (EV_A);	1169	if (backend == EVBACKEND_SELECT) select_destroy (EV_A);
888	#endif	1170	#endif
889		1171
890	for (i = NUMPRI; i--; )	1172	for (i = NUMPRI; i--; )
		1173	{
891	array_free (pending, [i]);	1174	array_free (pending, [i]);
		1175	#if EV_IDLE_ENABLE
		1176	array_free (idle, [i]);
		1177	#endif
		1178	}
		1179
		1180	ev_free (anfds); anfdmax = 0;
892		1181
893	/* have to use the microsoft-never-gets-it-right macro */	1182	/* have to use the microsoft-never-gets-it-right macro */
894	array_free (fdchange, EMPTY0);	1183	array_free (fdchange, EMPTY);
895	array_free (timer, EMPTY0);	1184	array_free (timer, EMPTY);
896	#if EV_PERIODICS	1185	#if EV_PERIODIC_ENABLE
897	array_free (periodic, EMPTY0);	1186	array_free (periodic, EMPTY);
898	#endif	1187	#endif
		1188	#if EV_FORK_ENABLE
899	array_free (idle, EMPTY0);	1189	array_free (fork, EMPTY);
		1190	#endif
900	array_free (prepare, EMPTY0);	1191	array_free (prepare, EMPTY);
901	array_free (check, EMPTY0);	1192	array_free (check, EMPTY);
		1193	#if EV_ASYNC_ENABLE
		1194	array_free (async, EMPTY);
		1195	#endif
902		1196
903	backend = 0;	1197	backend = 0;
904	}	1198	}
905		1199
906	static void	1200	void inline_size infy_fork (EV_P);
		1201
		1202	void inline_size
907	loop_fork (EV_P)	1203	loop_fork (EV_P)
908	{	1204	{
909	#if EV_USE_PORT	1205	#if EV_USE_PORT
910	if (backend == EVBACKEND_PORT ) port_fork (EV_A);	1206	if (backend == EVBACKEND_PORT ) port_fork (EV_A);
911	#endif	1207	#endif
…		…
913	if (backend == EVBACKEND_KQUEUE) kqueue_fork (EV_A);	1209	if (backend == EVBACKEND_KQUEUE) kqueue_fork (EV_A);
914	#endif	1210	#endif
915	#if EV_USE_EPOLL	1211	#if EV_USE_EPOLL
916	if (backend == EVBACKEND_EPOLL ) epoll_fork (EV_A);	1212	if (backend == EVBACKEND_EPOLL ) epoll_fork (EV_A);
917	#endif	1213	#endif
		1214	#if EV_USE_INOTIFY
		1215	infy_fork (EV_A);
		1216	#endif
918		1217
919	if (ev_is_active (&sigev))	1218	if (ev_is_active (&pipeev))
920	{	1219	{
921	/* default loop */	1220	/* this "locks" the handlers against writing to the pipe */
		1221	/* while we modify the fd vars */
		1222	gotsig = 1;
		1223	#if EV_ASYNC_ENABLE
		1224	gotasync = 1;
		1225	#endif
922		1226
923	ev_ref (EV_A);	1227	ev_ref (EV_A);
924	ev_io_stop (EV_A_ &sigev);	1228	ev_io_stop (EV_A_ &pipeev);
925	close (sigpipe [0]);	1229	close (evpipe [0]);
926	close (sigpipe [1]);	1230	close (evpipe [1]);
927		1231
928	while (pipe (sigpipe))
929	syserr ("(libev) error creating pipe");
930
931	siginit (EV_A);	1232	evpipe_init (EV_A);
		1233	/* now iterate over everything, in case we missed something */
		1234	pipecb (EV_A_ &pipeev, EV_READ);
932	}	1235	}
933		1236
934	postfork = 0;	1237	postfork = 0;
935	}	1238	}
936		1239
…		…
958	}	1261	}
959		1262
960	void	1263	void
961	ev_loop_fork (EV_P)	1264	ev_loop_fork (EV_P)
962	{	1265	{
963	postfork = 1;	1266	postfork = 1; /* must be in line with ev_default_fork */
964	}	1267	}
965		1268
966	#endif	1269	#endif
967		1270
968	#if EV_MULTIPLICITY	1271	#if EV_MULTIPLICITY
…		…
971	#else	1274	#else
972	int	1275	int
973	ev_default_loop (unsigned int flags)	1276	ev_default_loop (unsigned int flags)
974	#endif	1277	#endif
975	{	1278	{
976	if (sigpipe [0] == sigpipe [1])
977	if (pipe (sigpipe))
978	return 0;
979
980	if (!ev_default_loop_ptr)	1279	if (!ev_default_loop_ptr)
981	{	1280	{
982	#if EV_MULTIPLICITY	1281	#if EV_MULTIPLICITY
983	struct ev_loop *loop = ev_default_loop_ptr = &default_loop_struct;	1282	struct ev_loop *loop = ev_default_loop_ptr = &default_loop_struct;
984	#else	1283	#else
…		…
987		1286
988	loop_init (EV_A_ flags);	1287	loop_init (EV_A_ flags);
989		1288
990	if (ev_backend (EV_A))	1289	if (ev_backend (EV_A))
991	{	1290	{
992	siginit (EV_A);
993
994	#ifndef _WIN32	1291	#ifndef _WIN32
995	ev_signal_init (&childev, childcb, SIGCHLD);	1292	ev_signal_init (&childev, childcb, SIGCHLD);
996	ev_set_priority (&childev, EV_MAXPRI);	1293	ev_set_priority (&childev, EV_MAXPRI);
997	ev_signal_start (EV_A_ &childev);	1294	ev_signal_start (EV_A_ &childev);
998	ev_unref (EV_A); /* child watcher should not keep loop alive */	1295	ev_unref (EV_A); /* child watcher should not keep loop alive */
…		…
1015	#ifndef _WIN32	1312	#ifndef _WIN32
1016	ev_ref (EV_A); /* child watcher */	1313	ev_ref (EV_A); /* child watcher */
1017	ev_signal_stop (EV_A_ &childev);	1314	ev_signal_stop (EV_A_ &childev);
1018	#endif	1315	#endif
1019		1316
1020	ev_ref (EV_A); /* signal watcher */
1021	ev_io_stop (EV_A_ &sigev);
1022
1023	close (sigpipe [0]); sigpipe [0] = 0;
1024	close (sigpipe [1]); sigpipe [1] = 0;
1025
1026	loop_destroy (EV_A);	1317	loop_destroy (EV_A);
1027	}	1318	}
1028		1319
1029	void	1320	void
1030	ev_default_fork (void)	1321	ev_default_fork (void)
…		…
1032	#if EV_MULTIPLICITY	1323	#if EV_MULTIPLICITY
1033	struct ev_loop *loop = ev_default_loop_ptr;	1324	struct ev_loop *loop = ev_default_loop_ptr;
1034	#endif	1325	#endif
1035		1326
1036	if (backend)	1327	if (backend)
1037	postfork = 1;	1328	postfork = 1; /* must be in line with ev_loop_fork */
1038	}	1329	}
1039		1330
1040	/*****************************************************************************/	1331	/*****************************************************************************/
1041		1332
1042	static int	1333	void
1043	any_pending (EV_P)	1334	ev_invoke (EV_P_ void *w, int revents)
1044	{	1335	{
1045	int pri;	1336	EV_CB_INVOKE ((W)w, revents);
1046
1047	for (pri = NUMPRI; pri--; )
1048	if (pendingcnt [pri])
1049	return 1;
1050
1051	return 0;
1052	}	1337	}
1053		1338
1054	inline void	1339	void inline_speed
1055	call_pending (EV_P)	1340	call_pending (EV_P)
1056	{	1341	{
1057	int pri;	1342	int pri;
1058		1343
1059	for (pri = NUMPRI; pri--; )	1344	for (pri = NUMPRI; pri--; )
…		…
1061	{	1346	{
1062	ANPENDING *p = pendings [pri] + --pendingcnt [pri];	1347	ANPENDING *p = pendings [pri] + --pendingcnt [pri];
1063		1348
1064	if (expect_true (p->w))	1349	if (expect_true (p->w))
1065	{	1350	{
		1351	/*assert (("non-pending watcher on pending list", p->w->pending));*/
		1352
1066	p->w->pending = 0;	1353	p->w->pending = 0;
1067	EV_CB_INVOKE (p->w, p->events);	1354	EV_CB_INVOKE (p->w, p->events);
1068	}	1355	}
1069	}	1356	}
1070	}	1357	}
1071		1358
1072	inline void	1359	void inline_size
1073	timers_reify (EV_P)	1360	timers_reify (EV_P)
1074	{	1361	{
1075	while (timercnt && ((WT)timers [0])->at <= mn_now)	1362	while (timercnt && ((WT)timers [0])->at <= mn_now)
1076	{	1363	{
1077	struct ev_timer *w = timers [0];	1364	ev_timer *w = (ev_timer *)timers [0];
1078		1365
1079	assert (("inactive timer on timer heap detected", ev_is_active (w)));	1366	/*assert (("inactive timer on timer heap detected", ev_is_active (w)));*/
1080		1367
1081	/* first reschedule or stop timer */	1368	/* first reschedule or stop timer */
1082	if (w->repeat)	1369	if (w->repeat)
1083	{	1370	{
1084	assert (("negative ev_timer repeat value found while processing timers", w->repeat > 0.));	1371	assert (("negative ev_timer repeat value found while processing timers", w->repeat > 0.));
1085		1372
1086	((WT)w)->at += w->repeat;	1373	((WT)w)->at += w->repeat;
1087	if (((WT)w)->at < mn_now)	1374	if (((WT)w)->at < mn_now)
1088	((WT)w)->at = mn_now;	1375	((WT)w)->at = mn_now;
1089		1376
1090	downheap ((WT *)timers, timercnt, 0);	1377	downheap (timers, timercnt, 0);
1091	}	1378	}
1092	else	1379	else
1093	ev_timer_stop (EV_A_ w); /* nonrepeating: stop timer */	1380	ev_timer_stop (EV_A_ w); /* nonrepeating: stop timer */
1094		1381
1095	ev_feed_event (EV_A_ (W)w, EV_TIMEOUT);	1382	ev_feed_event (EV_A_ (W)w, EV_TIMEOUT);
1096	}	1383	}
1097	}	1384	}
1098		1385
1099	#if EV_PERIODICS	1386	#if EV_PERIODIC_ENABLE
1100	inline void	1387	void inline_size
1101	periodics_reify (EV_P)	1388	periodics_reify (EV_P)
1102	{	1389	{
1103	while (periodiccnt && ((WT)periodics [0])->at <= ev_rt_now)	1390	while (periodiccnt && ((WT)periodics [0])->at <= ev_rt_now)
1104	{	1391	{
1105	struct ev_periodic *w = periodics [0];	1392	ev_periodic *w = (ev_periodic *)periodics [0];
1106		1393
1107	assert (("inactive timer on periodic heap detected", ev_is_active (w)));	1394	/*assert (("inactive timer on periodic heap detected", ev_is_active (w)));*/
1108		1395
1109	/* first reschedule or stop timer */	1396	/* first reschedule or stop timer */
1110	if (w->reschedule_cb)	1397	if (w->reschedule_cb)
1111	{	1398	{
1112	((WT)w)->at = w->reschedule_cb (w, ev_rt_now + 0.0001);	1399	((WT)w)->at = w->reschedule_cb (w, ev_rt_now + TIME_EPSILON);
1113	assert (("ev_periodic reschedule callback returned time in the past", ((WT)w)->at > ev_rt_now));	1400	assert (("ev_periodic reschedule callback returned time in the past", ((WT)w)->at > ev_rt_now));
1114	downheap ((WT *)periodics, periodiccnt, 0);	1401	downheap (periodics, periodiccnt, 0);
1115	}	1402	}
1116	else if (w->interval)	1403	else if (w->interval)
1117	{	1404	{
1118	((WT)w)->at += floor ((ev_rt_now - ((WT)w)->at) / w->interval + 1.) * w->interval;	1405	((WT)w)->at = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval;
		1406	if (((WT)w)->at - ev_rt_now <= TIME_EPSILON) ((WT)w)->at += w->interval;
1119	assert (("ev_periodic timeout in the past detected while processing timers, negative interval?", ((WT)w)->at > ev_rt_now));	1407	assert (("ev_periodic timeout in the past detected while processing timers, negative interval?", ((WT)w)->at > ev_rt_now));
1120	downheap ((WT *)periodics, periodiccnt, 0);	1408	downheap (periodics, periodiccnt, 0);
1121	}	1409	}
1122	else	1410	else
1123	ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */	1411	ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */
1124		1412
1125	ev_feed_event (EV_A_ (W)w, EV_PERIODIC);	1413	ev_feed_event (EV_A_ (W)w, EV_PERIODIC);
1126	}	1414	}
1127	}	1415	}
1128		1416
1129	static void	1417	static void noinline
1130	periodics_reschedule (EV_P)	1418	periodics_reschedule (EV_P)
1131	{	1419	{
1132	int i;	1420	int i;
1133		1421
1134	/* adjust periodics after time jump */	1422	/* adjust periodics after time jump */
1135	for (i = 0; i < periodiccnt; ++i)	1423	for (i = 0; i < periodiccnt; ++i)
1136	{	1424	{
1137	struct ev_periodic *w = periodics [i];	1425	ev_periodic *w = (ev_periodic *)periodics [i];
1138		1426
1139	if (w->reschedule_cb)	1427	if (w->reschedule_cb)
1140	((WT)w)->at = w->reschedule_cb (w, ev_rt_now);	1428	((WT)w)->at = w->reschedule_cb (w, ev_rt_now);
1141	else if (w->interval)	1429	else if (w->interval)
1142	((WT)w)->at += ceil ((ev_rt_now - ((WT)w)->at) / w->interval) * w->interval;	1430	((WT)w)->at = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval;
1143	}	1431	}
1144		1432
1145	/* now rebuild the heap */	1433	/* now rebuild the heap */
1146	for (i = periodiccnt >> 1; i--; )	1434	for (i = periodiccnt >> 1; i--; )
1147	downheap ((WT *)periodics, periodiccnt, i);	1435	downheap (periodics, periodiccnt, i);
1148	}	1436	}
1149	#endif	1437	#endif
1150		1438
1151	inline int	1439	#if EV_IDLE_ENABLE
1152	time_update_monotonic (EV_P)	1440	void inline_size
		1441	idle_reify (EV_P)
1153	{	1442	{
		1443	if (expect_false (idleall))
		1444	{
		1445	int pri;
		1446
		1447	for (pri = NUMPRI; pri--; )
		1448	{
		1449	if (pendingcnt [pri])
		1450	break;
		1451
		1452	if (idlecnt [pri])
		1453	{
		1454	queue_events (EV_A_ (W *)idles [pri], idlecnt [pri], EV_IDLE);
		1455	break;
		1456	}
		1457	}
		1458	}
		1459	}
		1460	#endif
		1461
		1462	void inline_speed
		1463	time_update (EV_P_ ev_tstamp max_block)
		1464	{
		1465	int i;
		1466
		1467	#if EV_USE_MONOTONIC
		1468	if (expect_true (have_monotonic))
		1469	{
		1470	ev_tstamp odiff = rtmn_diff;
		1471
1154	mn_now = get_clock ();	1472	mn_now = get_clock ();
1155		1473
		1474	/* only fetch the realtime clock every 0.5*MIN_TIMEJUMP seconds */
		1475	/* interpolate in the meantime */
1156	if (expect_true (mn_now - now_floor < MIN_TIMEJUMP * .5))	1476	if (expect_true (mn_now - now_floor < MIN_TIMEJUMP * .5))
1157	{	1477	{
1158	ev_rt_now = rtmn_diff + mn_now;	1478	ev_rt_now = rtmn_diff + mn_now;
1159	return 0;	1479	return;
1160	}	1480	}
1161	else	1481
1162	{
1163	now_floor = mn_now;	1482	now_floor = mn_now;
1164	ev_rt_now = ev_time ();	1483	ev_rt_now = ev_time ();
1165	return 1;
1166	}
1167	}
1168		1484
1169	inline void	1485	/* loop a few times, before making important decisions.
1170	time_update (EV_P)	1486	* on the choice of "4": one iteration isn't enough,
1171	{	1487	* in case we get preempted during the calls to
1172	int i;	1488	* ev_time and get_clock. a second call is almost guaranteed
1173		1489	* to succeed in that case, though. and looping a few more times
1174	#if EV_USE_MONOTONIC	1490	* doesn't hurt either as we only do this on time-jumps or
1175	if (expect_true (have_monotonic))	1491	* in the unlikely event of having been preempted here.
1176	{	1492	*/
1177	if (time_update_monotonic (EV_A))	1493	for (i = 4; --i; )
1178	{	1494	{
1179	ev_tstamp odiff = rtmn_diff;
1180
1181	for (i = 4; --i; ) /* loop a few times, before making important decisions */
1182	{
1183	rtmn_diff = ev_rt_now - mn_now;	1495	rtmn_diff = ev_rt_now - mn_now;
1184		1496
1185	if (fabs (odiff - rtmn_diff) < MIN_TIMEJUMP)	1497	if (fabs (odiff - rtmn_diff) < MIN_TIMEJUMP)
1186	return; /* all is well */	1498	return; /* all is well */
1187		1499
1188	ev_rt_now = ev_time ();	1500	ev_rt_now = ev_time ();
1189	mn_now = get_clock ();	1501	mn_now = get_clock ();
1190	now_floor = mn_now;	1502	now_floor = mn_now;
1191	}	1503	}
1192		1504
1193	# if EV_PERIODICS	1505	# if EV_PERIODIC_ENABLE
		1506	periodics_reschedule (EV_A);
		1507	# endif
		1508	/* no timer adjustment, as the monotonic clock doesn't jump */
		1509	/* timers_reschedule (EV_A_ rtmn_diff - odiff) */
		1510	}
		1511	else
		1512	#endif
		1513	{
		1514	ev_rt_now = ev_time ();
		1515
		1516	if (expect_false (mn_now > ev_rt_now || ev_rt_now > mn_now + max_block + MIN_TIMEJUMP))
		1517	{
		1518	#if EV_PERIODIC_ENABLE
1194	periodics_reschedule (EV_A);	1519	periodics_reschedule (EV_A);
1195	# endif	1520	#endif
1196	/* no timer adjustment, as the monotonic clock doesn't jump */
1197	/* timers_reschedule (EV_A_ rtmn_diff - odiff) */
1198	}
1199	}
1200	else
1201	#endif
1202	{
1203	ev_rt_now = ev_time ();
1204
1205	if (expect_false (mn_now > ev_rt_now || mn_now < ev_rt_now - MAX_BLOCKTIME - MIN_TIMEJUMP))
1206	{
1207	#if EV_PERIODICS
1208	periodics_reschedule (EV_A);
1209	#endif
1210
1211	/* adjust timers. this is easy, as the offset is the same for all */	1521	/* adjust timers. this is easy, as the offset is the same for all of them */
1212	for (i = 0; i < timercnt; ++i)	1522	for (i = 0; i < timercnt; ++i)
1213	((WT)timers [i])->at += ev_rt_now - mn_now;	1523	((WT)timers [i])->at += ev_rt_now - mn_now;
1214	}	1524	}
1215		1525
1216	mn_now = ev_rt_now;	1526	mn_now = ev_rt_now;
…		…
1232	static int loop_done;	1542	static int loop_done;
1233		1543
1234	void	1544	void
1235	ev_loop (EV_P_ int flags)	1545	ev_loop (EV_P_ int flags)
1236	{	1546	{
1237	double block;
1238	loop_done = flags & (EVLOOP_ONESHOT | EVLOOP_NONBLOCK) ? 1 : 0;	1547	loop_done = flags & (EVLOOP_ONESHOT | EVLOOP_NONBLOCK)
		1548	? EVUNLOOP_ONE
		1549	: EVUNLOOP_CANCEL;
1239		1550
1240	while (activecnt)	1551	call_pending (EV_A); /* in case we recurse, ensure ordering stays nice and clean */
		1552
		1553	do
1241	{	1554	{
		1555	#ifndef _WIN32
		1556	if (expect_false (curpid)) /* penalise the forking check even more */
		1557	if (expect_false (getpid () != curpid))
		1558	{
		1559	curpid = getpid ();
		1560	postfork = 1;
		1561	}
		1562	#endif
		1563
		1564	#if EV_FORK_ENABLE
		1565	/* we might have forked, so queue fork handlers */
		1566	if (expect_false (postfork))
		1567	if (forkcnt)
		1568	{
		1569	queue_events (EV_A_ (W *)forks, forkcnt, EV_FORK);
		1570	call_pending (EV_A);
		1571	}
		1572	#endif
		1573
1242	/* queue check watchers (and execute them) */	1574	/* queue prepare watchers (and execute them) */
1243	if (expect_false (preparecnt))	1575	if (expect_false (preparecnt))
1244	{	1576	{
1245	queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE);	1577	queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE);
1246	call_pending (EV_A);	1578	call_pending (EV_A);
1247	}	1579	}
1248		1580
		1581	if (expect_false (!activecnt))
		1582	break;
		1583
1249	/* we might have forked, so reify kernel state if necessary */	1584	/* we might have forked, so reify kernel state if necessary */
1250	if (expect_false (postfork))	1585	if (expect_false (postfork))
1251	loop_fork (EV_A);	1586	loop_fork (EV_A);
1252		1587
1253	/* update fd-related kernel structures */	1588	/* update fd-related kernel structures */
1254	fd_reify (EV_A);	1589	fd_reify (EV_A);
1255		1590
1256	/* calculate blocking time */	1591	/* calculate blocking time */
		1592	{
		1593	ev_tstamp waittime = 0.;
		1594	ev_tstamp sleeptime = 0.;
1257		1595
1258	/* we only need this for !monotonic clock or timers, but as we basically	1596	if (expect_true (!(flags & EVLOOP_NONBLOCK || idleall || !activecnt)))
1259	always have timers, we just calculate it always */
1260	#if EV_USE_MONOTONIC
1261	if (expect_true (have_monotonic))
1262	time_update_monotonic (EV_A);
1263	else
1264	#endif
1265	{	1597	{
1266	ev_rt_now = ev_time ();	1598	/* update time to cancel out callback processing overhead */
1267	mn_now = ev_rt_now;	1599	time_update (EV_A_ 1e100);
1268	}
1269		1600
1270	if (flags & EVLOOP_NONBLOCK || idlecnt)
1271	block = 0.;
1272	else
1273	{
1274	block = MAX_BLOCKTIME;	1601	waittime = MAX_BLOCKTIME;
1275		1602
1276	if (timercnt)	1603	if (timercnt)
1277	{	1604	{
1278	ev_tstamp to = ((WT)timers [0])->at - mn_now + backend_fudge;	1605	ev_tstamp to = ((WT)timers [0])->at - mn_now + backend_fudge;
1279	if (block > to) block = to;	1606	if (waittime > to) waittime = to;
1280	}	1607	}
1281		1608
1282	#if EV_PERIODICS	1609	#if EV_PERIODIC_ENABLE
1283	if (periodiccnt)	1610	if (periodiccnt)
1284	{	1611	{
1285	ev_tstamp to = ((WT)periodics [0])->at - ev_rt_now + backend_fudge;	1612	ev_tstamp to = ((WT)periodics [0])->at - ev_rt_now + backend_fudge;
1286	if (block > to) block = to;	1613	if (waittime > to) waittime = to;
1287	}	1614	}
1288	#endif	1615	#endif
1289		1616
1290	if (expect_false (block < 0.)) block = 0.;	1617	if (expect_false (waittime < timeout_blocktime))
		1618	waittime = timeout_blocktime;
		1619
		1620	sleeptime = waittime - backend_fudge;
		1621
		1622	if (expect_true (sleeptime > io_blocktime))
		1623	sleeptime = io_blocktime;
		1624
		1625	if (sleeptime)
		1626	{
		1627	ev_sleep (sleeptime);
		1628	waittime -= sleeptime;
		1629	}
1291	}	1630	}
1292		1631
		1632	++loop_count;
1293	backend_poll (EV_A_ block);	1633	backend_poll (EV_A_ waittime);
1294		1634
1295	/* update ev_rt_now, do magic */	1635	/* update ev_rt_now, do magic */
1296	time_update (EV_A);	1636	time_update (EV_A_ waittime + sleeptime);
		1637	}
1297		1638
1298	/* queue pending timers and reschedule them */	1639	/* queue pending timers and reschedule them */
1299	timers_reify (EV_A); /* relative timers called last */	1640	timers_reify (EV_A); /* relative timers called last */
1300	#if EV_PERIODICS	1641	#if EV_PERIODIC_ENABLE
1301	periodics_reify (EV_A); /* absolute timers called first */	1642	periodics_reify (EV_A); /* absolute timers called first */
1302	#endif	1643	#endif
1303		1644
		1645	#if EV_IDLE_ENABLE
1304	/* queue idle watchers unless io or timers are pending */	1646	/* queue idle watchers unless other events are pending */
1305	if (idlecnt && !any_pending (EV_A))	1647	idle_reify (EV_A);
1306	queue_events (EV_A_ (W *)idles, idlecnt, EV_IDLE);	1648	#endif
1307		1649
1308	/* queue check watchers, to be executed first */	1650	/* queue check watchers, to be executed first */
1309	if (expect_false (checkcnt))	1651	if (expect_false (checkcnt))
1310	queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK);	1652	queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK);
1311		1653
1312	call_pending (EV_A);	1654	call_pending (EV_A);
1313		1655
1314	if (expect_false (loop_done))
1315	break;
1316	}	1656	}
		1657	while (expect_true (activecnt && !loop_done));
1317		1658
1318	if (loop_done != 2)	1659	if (loop_done == EVUNLOOP_ONE)
1319	loop_done = 0;	1660	loop_done = EVUNLOOP_CANCEL;
1320	}	1661	}
1321		1662
1322	void	1663	void
1323	ev_unloop (EV_P_ int how)	1664	ev_unloop (EV_P_ int how)
1324	{	1665	{
1325	loop_done = how;	1666	loop_done = how;
1326	}	1667	}
1327		1668
1328	/*****************************************************************************/	1669	/*****************************************************************************/
1329		1670
1330	inline void	1671	void inline_size
1331	wlist_add (WL *head, WL elem)	1672	wlist_add (WL *head, WL elem)
1332	{	1673	{
1333	elem->next = *head;	1674	elem->next = *head;
1334	*head = elem;	1675	*head = elem;
1335	}	1676	}
1336		1677
1337	inline void	1678	void inline_size
1338	wlist_del (WL *head, WL elem)	1679	wlist_del (WL *head, WL elem)
1339	{	1680	{
1340	while (*head)	1681	while (*head)
1341	{	1682	{
1342	if (*head == elem)	1683	if (*head == elem)
…		…
1347		1688
1348	head = &(*head)->next;	1689	head = &(*head)->next;
1349	}	1690	}
1350	}	1691	}
1351		1692
1352	inline void	1693	void inline_speed
1353	ev_clear_pending (EV_P_ W w)	1694	clear_pending (EV_P_ W w)
1354	{	1695	{
1355	if (w->pending)	1696	if (w->pending)
1356	{	1697	{
1357	pendings [ABSPRI (w)][w->pending - 1].w = 0;	1698	pendings [ABSPRI (w)][w->pending - 1].w = 0;
1358	w->pending = 0;	1699	w->pending = 0;
1359	}	1700	}
1360	}	1701	}
1361		1702
1362	inline void	1703	int
		1704	ev_clear_pending (EV_P_ void *w)
		1705	{
		1706	W w_ = (W)w;
		1707	int pending = w_->pending;
		1708
		1709	if (expect_true (pending))
		1710	{
		1711	ANPENDING *p = pendings [ABSPRI (w_)] + pending - 1;
		1712	w_->pending = 0;
		1713	p->w = 0;
		1714	return p->events;
		1715	}
		1716	else
		1717	return 0;
		1718	}
		1719
		1720	void inline_size
		1721	pri_adjust (EV_P_ W w)
		1722	{
		1723	int pri = w->priority;
		1724	pri = pri < EV_MINPRI ? EV_MINPRI : pri;
		1725	pri = pri > EV_MAXPRI ? EV_MAXPRI : pri;
		1726	w->priority = pri;
		1727	}
		1728
		1729	void inline_speed
1363	ev_start (EV_P_ W w, int active)	1730	ev_start (EV_P_ W w, int active)
1364	{	1731	{
1365	if (w->priority < EV_MINPRI) w->priority = EV_MINPRI;	1732	pri_adjust (EV_A_ w);
1366	if (w->priority > EV_MAXPRI) w->priority = EV_MAXPRI;
1367
1368	w->active = active;	1733	w->active = active;
1369	ev_ref (EV_A);	1734	ev_ref (EV_A);
1370	}	1735	}
1371		1736
1372	inline void	1737	void inline_size
1373	ev_stop (EV_P_ W w)	1738	ev_stop (EV_P_ W w)
1374	{	1739	{
1375	ev_unref (EV_A);	1740	ev_unref (EV_A);
1376	w->active = 0;	1741	w->active = 0;
1377	}	1742	}
1378		1743
1379	/*****************************************************************************/	1744	/*****************************************************************************/
1380		1745
1381	void	1746	void noinline
1382	ev_io_start (EV_P_ struct ev_io *w)	1747	ev_io_start (EV_P_ ev_io *w)
1383	{	1748	{
1384	int fd = w->fd;	1749	int fd = w->fd;
1385		1750
1386	if (expect_false (ev_is_active (w)))	1751	if (expect_false (ev_is_active (w)))
1387	return;	1752	return;
1388		1753
1389	assert (("ev_io_start called with negative fd", fd >= 0));	1754	assert (("ev_io_start called with negative fd", fd >= 0));
1390		1755
1391	ev_start (EV_A_ (W)w, 1);	1756	ev_start (EV_A_ (W)w, 1);
1392	array_needsize (ANFD, anfds, anfdmax, fd + 1, anfds_init);	1757	array_needsize (ANFD, anfds, anfdmax, fd + 1, anfds_init);
1393	wlist_add ((WL *)&anfds[fd].head, (WL)w);	1758	wlist_add (&anfds[fd].head, (WL)w);
1394		1759
1395	fd_change (EV_A_ fd);	1760	fd_change (EV_A_ fd, w->events & EV_IOFDSET | 1);
		1761	w->events &= ~EV_IOFDSET;
1396	}	1762	}
1397		1763
1398	void	1764	void noinline
1399	ev_io_stop (EV_P_ struct ev_io *w)	1765	ev_io_stop (EV_P_ ev_io *w)
1400	{	1766	{
1401	ev_clear_pending (EV_A_ (W)w);	1767	clear_pending (EV_A_ (W)w);
1402	if (expect_false (!ev_is_active (w)))	1768	if (expect_false (!ev_is_active (w)))
1403	return;	1769	return;
1404		1770
1405	assert (("ev_io_start called with illegal fd (must stay constant after start!)", w->fd >= 0 && w->fd < anfdmax));	1771	assert (("ev_io_start called with illegal fd (must stay constant after start!)", w->fd >= 0 && w->fd < anfdmax));
1406		1772
1407	wlist_del ((WL *)&anfds[w->fd].head, (WL)w);	1773	wlist_del (&anfds[w->fd].head, (WL)w);
1408	ev_stop (EV_A_ (W)w);	1774	ev_stop (EV_A_ (W)w);
1409		1775
1410	fd_change (EV_A_ w->fd);	1776	fd_change (EV_A_ w->fd, 1);
1411	}	1777	}
1412		1778
1413	void	1779	void noinline
1414	ev_timer_start (EV_P_ struct ev_timer *w)	1780	ev_timer_start (EV_P_ ev_timer *w)
1415	{	1781	{
1416	if (expect_false (ev_is_active (w)))	1782	if (expect_false (ev_is_active (w)))
1417	return;	1783	return;
1418		1784
1419	((WT)w)->at += mn_now;	1785	((WT)w)->at += mn_now;
1420		1786
1421	assert (("ev_timer_start called with negative timer repeat value", w->repeat >= 0.));	1787	assert (("ev_timer_start called with negative timer repeat value", w->repeat >= 0.));
1422		1788
1423	ev_start (EV_A_ (W)w, ++timercnt);	1789	ev_start (EV_A_ (W)w, ++timercnt);
1424	array_needsize (struct ev_timer *, timers, timermax, timercnt, EMPTY2);	1790	array_needsize (WT, timers, timermax, timercnt, EMPTY2);
1425	timers [timercnt - 1] = w;	1791	timers [timercnt - 1] = (WT)w;
1426	upheap ((WT *)timers, timercnt - 1);	1792	upheap (timers, timercnt - 1);
1427		1793
1428	assert (("internal timer heap corruption", timers [((W)w)->active - 1] == w));	1794	/*assert (("internal timer heap corruption", timers [((W)w)->active - 1] == w));*/
1429	}	1795	}
1430		1796
1431	void	1797	void noinline
1432	ev_timer_stop (EV_P_ struct ev_timer *w)	1798	ev_timer_stop (EV_P_ ev_timer *w)
1433	{	1799	{
1434	ev_clear_pending (EV_A_ (W)w);	1800	clear_pending (EV_A_ (W)w);
1435	if (expect_false (!ev_is_active (w)))	1801	if (expect_false (!ev_is_active (w)))
1436	return;	1802	return;
1437		1803
1438	assert (("internal timer heap corruption", timers [((W)w)->active - 1] == w));	1804	assert (("internal timer heap corruption", timers [((W)w)->active - 1] == (WT)w));
1439		1805
		1806	{
		1807	int active = ((W)w)->active;
		1808
1440	if (expect_true (((W)w)->active < timercnt--))	1809	if (expect_true (--active < --timercnt))
1441	{	1810	{
1442	timers [((W)w)->active - 1] = timers [timercnt];	1811	timers [active] = timers [timercnt];
1443	adjustheap ((WT *)timers, timercnt, ((W)w)->active - 1);	1812	adjustheap (timers, timercnt, active);
1444	}	1813	}
		1814	}
1445		1815
1446	((WT)w)->at -= mn_now;	1816	((WT)w)->at -= mn_now;
1447		1817
1448	ev_stop (EV_A_ (W)w);	1818	ev_stop (EV_A_ (W)w);
1449	}	1819	}
1450		1820
1451	void	1821	void noinline
1452	ev_timer_again (EV_P_ struct ev_timer *w)	1822	ev_timer_again (EV_P_ ev_timer *w)
1453	{	1823	{
1454	if (ev_is_active (w))	1824	if (ev_is_active (w))
1455	{	1825	{
1456	if (w->repeat)	1826	if (w->repeat)
1457	{	1827	{
1458	((WT)w)->at = mn_now + w->repeat;	1828	((WT)w)->at = mn_now + w->repeat;
1459	adjustheap ((WT *)timers, timercnt, ((W)w)->active - 1);	1829	adjustheap (timers, timercnt, ((W)w)->active - 1);
1460	}	1830	}
1461	else	1831	else
1462	ev_timer_stop (EV_A_ w);	1832	ev_timer_stop (EV_A_ w);
1463	}	1833	}
1464	else if (w->repeat)	1834	else if (w->repeat)
…		…
1466	w->at = w->repeat;	1836	w->at = w->repeat;
1467	ev_timer_start (EV_A_ w);	1837	ev_timer_start (EV_A_ w);
1468	}	1838	}
1469	}	1839	}
1470		1840
1471	#if EV_PERIODICS	1841	#if EV_PERIODIC_ENABLE
1472	void	1842	void noinline
1473	ev_periodic_start (EV_P_ struct ev_periodic *w)	1843	ev_periodic_start (EV_P_ ev_periodic *w)
1474	{	1844	{
1475	if (expect_false (ev_is_active (w)))	1845	if (expect_false (ev_is_active (w)))
1476	return;	1846	return;
1477		1847
1478	if (w->reschedule_cb)	1848	if (w->reschedule_cb)
1479	((WT)w)->at = w->reschedule_cb (w, ev_rt_now);	1849	((WT)w)->at = w->reschedule_cb (w, ev_rt_now);
1480	else if (w->interval)	1850	else if (w->interval)
1481	{	1851	{
1482	assert (("ev_periodic_start called with negative interval value", w->interval >= 0.));	1852	assert (("ev_periodic_start called with negative interval value", w->interval >= 0.));
1483	/* this formula differs from the one in periodic_reify because we do not always round up */	1853	/* this formula differs from the one in periodic_reify because we do not always round up */
1484	((WT)w)->at += ceil ((ev_rt_now - ((WT)w)->at) / w->interval) * w->interval;	1854	((WT)w)->at = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval;
1485	}	1855	}
		1856	else
		1857	((WT)w)->at = w->offset;
1486		1858
1487	ev_start (EV_A_ (W)w, ++periodiccnt);	1859	ev_start (EV_A_ (W)w, ++periodiccnt);
1488	array_needsize (struct ev_periodic *, periodics, periodicmax, periodiccnt, EMPTY2);	1860	array_needsize (WT, periodics, periodicmax, periodiccnt, EMPTY2);
1489	periodics [periodiccnt - 1] = w;	1861	periodics [periodiccnt - 1] = (WT)w;
1490	upheap ((WT *)periodics, periodiccnt - 1);	1862	upheap (periodics, periodiccnt - 1);
1491		1863
1492	assert (("internal periodic heap corruption", periodics [((W)w)->active - 1] == w));	1864	/*assert (("internal periodic heap corruption", periodics [((W)w)->active - 1] == w));*/
1493	}	1865	}
1494		1866
1495	void	1867	void noinline
1496	ev_periodic_stop (EV_P_ struct ev_periodic *w)	1868	ev_periodic_stop (EV_P_ ev_periodic *w)
1497	{	1869	{
1498	ev_clear_pending (EV_A_ (W)w);	1870	clear_pending (EV_A_ (W)w);
1499	if (expect_false (!ev_is_active (w)))	1871	if (expect_false (!ev_is_active (w)))
1500	return;	1872	return;
1501		1873
1502	assert (("internal periodic heap corruption", periodics [((W)w)->active - 1] == w));	1874	assert (("internal periodic heap corruption", periodics [((W)w)->active - 1] == (WT)w));
1503		1875
		1876	{
		1877	int active = ((W)w)->active;
		1878
1504	if (expect_true (((W)w)->active < periodiccnt--))	1879	if (expect_true (--active < --periodiccnt))
1505	{	1880	{
1506	periodics [((W)w)->active - 1] = periodics [periodiccnt];	1881	periodics [active] = periodics [periodiccnt];
1507	adjustheap ((WT *)periodics, periodiccnt, ((W)w)->active - 1);	1882	adjustheap (periodics, periodiccnt, active);
1508	}	1883	}
		1884	}
1509		1885
1510	ev_stop (EV_A_ (W)w);	1886	ev_stop (EV_A_ (W)w);
1511	}	1887	}
1512		1888
1513	void	1889	void noinline
1514	ev_periodic_again (EV_P_ struct ev_periodic *w)	1890	ev_periodic_again (EV_P_ ev_periodic *w)
1515	{	1891	{
1516	/* TODO: use adjustheap and recalculation */	1892	/* TODO: use adjustheap and recalculation */
1517	ev_periodic_stop (EV_A_ w);	1893	ev_periodic_stop (EV_A_ w);
1518	ev_periodic_start (EV_A_ w);	1894	ev_periodic_start (EV_A_ w);
1519	}	1895	}
1520	#endif	1896	#endif
1521		1897
1522	void
1523	ev_idle_start (EV_P_ struct ev_idle *w)
1524	{
1525	if (expect_false (ev_is_active (w)))
1526	return;
1527
1528	ev_start (EV_A_ (W)w, ++idlecnt);
1529	array_needsize (struct ev_idle *, idles, idlemax, idlecnt, EMPTY2);
1530	idles [idlecnt - 1] = w;
1531	}
1532
1533	void
1534	ev_idle_stop (EV_P_ struct ev_idle *w)
1535	{
1536	ev_clear_pending (EV_A_ (W)w);
1537	if (expect_false (!ev_is_active (w)))
1538	return;
1539
1540	idles [((W)w)->active - 1] = idles [--idlecnt];
1541	ev_stop (EV_A_ (W)w);
1542	}
1543
1544	void
1545	ev_prepare_start (EV_P_ struct ev_prepare *w)
1546	{
1547	if (expect_false (ev_is_active (w)))
1548	return;
1549
1550	ev_start (EV_A_ (W)w, ++preparecnt);
1551	array_needsize (struct ev_prepare *, prepares, preparemax, preparecnt, EMPTY2);
1552	prepares [preparecnt - 1] = w;
1553	}
1554
1555	void
1556	ev_prepare_stop (EV_P_ struct ev_prepare *w)
1557	{
1558	ev_clear_pending (EV_A_ (W)w);
1559	if (expect_false (!ev_is_active (w)))
1560	return;
1561
1562	prepares [((W)w)->active - 1] = prepares [--preparecnt];
1563	ev_stop (EV_A_ (W)w);
1564	}
1565
1566	void
1567	ev_check_start (EV_P_ struct ev_check *w)
1568	{
1569	if (expect_false (ev_is_active (w)))
1570	return;
1571
1572	ev_start (EV_A_ (W)w, ++checkcnt);
1573	array_needsize (struct ev_check *, checks, checkmax, checkcnt, EMPTY2);
1574	checks [checkcnt - 1] = w;
1575	}
1576
1577	void
1578	ev_check_stop (EV_P_ struct ev_check *w)
1579	{
1580	ev_clear_pending (EV_A_ (W)w);
1581	if (expect_false (!ev_is_active (w)))
1582	return;
1583
1584	checks [((W)w)->active - 1] = checks [--checkcnt];
1585	ev_stop (EV_A_ (W)w);
1586	}
1587
1588	#ifndef SA_RESTART	1898	#ifndef SA_RESTART
1589	# define SA_RESTART 0	1899	# define SA_RESTART 0
1590	#endif	1900	#endif
1591		1901
1592	void	1902	void noinline
1593	ev_signal_start (EV_P_ struct ev_signal *w)	1903	ev_signal_start (EV_P_ ev_signal *w)
1594	{	1904	{
1595	#if EV_MULTIPLICITY	1905	#if EV_MULTIPLICITY
1596	assert (("signal watchers are only supported in the default loop", loop == ev_default_loop_ptr));	1906	assert (("signal watchers are only supported in the default loop", loop == ev_default_loop_ptr));
1597	#endif	1907	#endif
1598	if (expect_false (ev_is_active (w)))	1908	if (expect_false (ev_is_active (w)))
1599	return;	1909	return;
1600		1910
1601	assert (("ev_signal_start called with illegal signal number", w->signum > 0));	1911	assert (("ev_signal_start called with illegal signal number", w->signum > 0));
1602		1912
		1913	evpipe_init (EV_A);
		1914
		1915	{
		1916	#ifndef _WIN32
		1917	sigset_t full, prev;
		1918	sigfillset (&full);
		1919	sigprocmask (SIG_SETMASK, &full, &prev);
		1920	#endif
		1921
		1922	array_needsize (ANSIG, signals, signalmax, w->signum, signals_init);
		1923
		1924	#ifndef _WIN32
		1925	sigprocmask (SIG_SETMASK, &prev, 0);
		1926	#endif
		1927	}
		1928
1603	ev_start (EV_A_ (W)w, 1);	1929	ev_start (EV_A_ (W)w, 1);
1604	array_needsize (ANSIG, signals, signalmax, w->signum, signals_init);
1605	wlist_add ((WL *)&signals [w->signum - 1].head, (WL)w);	1930	wlist_add (&signals [w->signum - 1].head, (WL)w);
1606		1931
1607	if (!((WL)w)->next)	1932	if (!((WL)w)->next)
1608	{	1933	{
1609	#if _WIN32	1934	#if _WIN32
1610	signal (w->signum, sighandler);	1935	signal (w->signum, sighandler);
…		…
1616	sigaction (w->signum, &sa, 0);	1941	sigaction (w->signum, &sa, 0);
1617	#endif	1942	#endif
1618	}	1943	}
1619	}	1944	}
1620		1945
1621	void	1946	void noinline
1622	ev_signal_stop (EV_P_ struct ev_signal *w)	1947	ev_signal_stop (EV_P_ ev_signal *w)
1623	{	1948	{
1624	ev_clear_pending (EV_A_ (W)w);	1949	clear_pending (EV_A_ (W)w);
1625	if (expect_false (!ev_is_active (w)))	1950	if (expect_false (!ev_is_active (w)))
1626	return;	1951	return;
1627		1952
1628	wlist_del ((WL *)&signals [w->signum - 1].head, (WL)w);	1953	wlist_del (&signals [w->signum - 1].head, (WL)w);
1629	ev_stop (EV_A_ (W)w);	1954	ev_stop (EV_A_ (W)w);
1630		1955
1631	if (!signals [w->signum - 1].head)	1956	if (!signals [w->signum - 1].head)
1632	signal (w->signum, SIG_DFL);	1957	signal (w->signum, SIG_DFL);
1633	}	1958	}
1634		1959
1635	void	1960	void
1636	ev_child_start (EV_P_ struct ev_child *w)	1961	ev_child_start (EV_P_ ev_child *w)
1637	{	1962	{
1638	#if EV_MULTIPLICITY	1963	#if EV_MULTIPLICITY
1639	assert (("child watchers are only supported in the default loop", loop == ev_default_loop_ptr));	1964	assert (("child watchers are only supported in the default loop", loop == ev_default_loop_ptr));
1640	#endif	1965	#endif
1641	if (expect_false (ev_is_active (w)))	1966	if (expect_false (ev_is_active (w)))
1642	return;	1967	return;
1643		1968
1644	ev_start (EV_A_ (W)w, 1);	1969	ev_start (EV_A_ (W)w, 1);
1645	wlist_add ((WL *)&childs [w->pid & (PID_HASHSIZE - 1)], (WL)w);	1970	wlist_add (&childs [w->pid & (EV_PID_HASHSIZE - 1)], (WL)w);
1646	}	1971	}
1647		1972
1648	void	1973	void
1649	ev_child_stop (EV_P_ struct ev_child *w)	1974	ev_child_stop (EV_P_ ev_child *w)
1650	{	1975	{
1651	ev_clear_pending (EV_A_ (W)w);	1976	clear_pending (EV_A_ (W)w);
1652	if (expect_false (!ev_is_active (w)))	1977	if (expect_false (!ev_is_active (w)))
1653	return;	1978	return;
1654		1979
1655	wlist_del ((WL *)&childs [w->pid & (PID_HASHSIZE - 1)], (WL)w);	1980	wlist_del (&childs [w->pid & (EV_PID_HASHSIZE - 1)], (WL)w);
1656	ev_stop (EV_A_ (W)w);	1981	ev_stop (EV_A_ (W)w);
1657	}	1982	}
1658		1983
		1984	#if EV_STAT_ENABLE
		1985
		1986	# ifdef _WIN32
		1987	# undef lstat
		1988	# define lstat(a,b) _stati64 (a,b)
		1989	# endif
		1990
		1991	#define DEF_STAT_INTERVAL 5.0074891
		1992	#define MIN_STAT_INTERVAL 0.1074891
		1993
		1994	static void noinline stat_timer_cb (EV_P_ ev_timer *w_, int revents);
		1995
		1996	#if EV_USE_INOTIFY
		1997	# define EV_INOTIFY_BUFSIZE 8192
		1998
		1999	static void noinline
		2000	infy_add (EV_P_ ev_stat *w)
		2001	{
		2002	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);
		2003
		2004	if (w->wd < 0)
		2005	{
		2006	ev_timer_start (EV_A_ &w->timer); /* this is not race-free, so we still need to recheck periodically */
		2007
		2008	/* monitor some parent directory for speedup hints */
		2009	if ((errno == ENOENT || errno == EACCES) && strlen (w->path) < 4096)
		2010	{
		2011	char path [4096];
		2012	strcpy (path, w->path);
		2013
		2014	do
		2015	{
		2016	int mask = IN_MASK_ADD | IN_DELETE_SELF | IN_MOVE_SELF
		2017	| (errno == EACCES ? IN_ATTRIB : IN_CREATE | IN_MOVED_TO);
		2018
		2019	char *pend = strrchr (path, '/');
		2020
		2021	if (!pend)
		2022	break; /* whoops, no '/', complain to your admin */
		2023
		2024	*pend = 0;
		2025	w->wd = inotify_add_watch (fs_fd, path, mask);
		2026	}
		2027	while (w->wd < 0 && (errno == ENOENT || errno == EACCES));
		2028	}
		2029	}
		2030	else
		2031	ev_timer_stop (EV_A_ &w->timer); /* we can watch this in a race-free way */
		2032
		2033	if (w->wd >= 0)
		2034	wlist_add (&fs_hash [w->wd & (EV_INOTIFY_HASHSIZE - 1)].head, (WL)w);
		2035	}
		2036
		2037	static void noinline
		2038	infy_del (EV_P_ ev_stat *w)
		2039	{
		2040	int slot;
		2041	int wd = w->wd;
		2042
		2043	if (wd < 0)
		2044	return;
		2045
		2046	w->wd = -2;
		2047	slot = wd & (EV_INOTIFY_HASHSIZE - 1);
		2048	wlist_del (&fs_hash [slot].head, (WL)w);
		2049
		2050	/* remove this watcher, if others are watching it, they will rearm */
		2051	inotify_rm_watch (fs_fd, wd);
		2052	}
		2053
		2054	static void noinline
		2055	infy_wd (EV_P_ int slot, int wd, struct inotify_event *ev)
		2056	{
		2057	if (slot < 0)
		2058	/* overflow, need to check for all hahs slots */
		2059	for (slot = 0; slot < EV_INOTIFY_HASHSIZE; ++slot)
		2060	infy_wd (EV_A_ slot, wd, ev);
		2061	else
		2062	{
		2063	WL w_;
		2064
		2065	for (w_ = fs_hash [slot & (EV_INOTIFY_HASHSIZE - 1)].head; w_; )
		2066	{
		2067	ev_stat *w = (ev_stat *)w_;
		2068	w_ = w_->next; /* lets us remove this watcher and all before it */
		2069
		2070	if (w->wd == wd || wd == -1)
		2071	{
		2072	if (ev->mask & (IN_IGNORED | IN_UNMOUNT | IN_DELETE_SELF))
		2073	{
		2074	w->wd = -1;
		2075	infy_add (EV_A_ w); /* re-add, no matter what */
		2076	}
		2077
		2078	stat_timer_cb (EV_A_ &w->timer, 0);
		2079	}
		2080	}
		2081	}
		2082	}
		2083
		2084	static void
		2085	infy_cb (EV_P_ ev_io *w, int revents)
		2086	{
		2087	char buf [EV_INOTIFY_BUFSIZE];
		2088	struct inotify_event *ev = (struct inotify_event *)buf;
		2089	int ofs;
		2090	int len = read (fs_fd, buf, sizeof (buf));
		2091
		2092	for (ofs = 0; ofs < len; ofs += sizeof (struct inotify_event) + ev->len)
		2093	infy_wd (EV_A_ ev->wd, ev->wd, ev);
		2094	}
		2095
		2096	void inline_size
		2097	infy_init (EV_P)
		2098	{
		2099	if (fs_fd != -2)
		2100	return;
		2101
		2102	fs_fd = inotify_init ();
		2103
		2104	if (fs_fd >= 0)
		2105	{
		2106	ev_io_init (&fs_w, infy_cb, fs_fd, EV_READ);
		2107	ev_set_priority (&fs_w, EV_MAXPRI);
		2108	ev_io_start (EV_A_ &fs_w);
		2109	}
		2110	}
		2111
		2112	void inline_size
		2113	infy_fork (EV_P)
		2114	{
		2115	int slot;
		2116
		2117	if (fs_fd < 0)
		2118	return;
		2119
		2120	close (fs_fd);
		2121	fs_fd = inotify_init ();
		2122
		2123	for (slot = 0; slot < EV_INOTIFY_HASHSIZE; ++slot)
		2124	{
		2125	WL w_ = fs_hash [slot].head;
		2126	fs_hash [slot].head = 0;
		2127
		2128	while (w_)
		2129	{
		2130	ev_stat *w = (ev_stat *)w_;
		2131	w_ = w_->next; /* lets us add this watcher */
		2132
		2133	w->wd = -1;
		2134
		2135	if (fs_fd >= 0)
		2136	infy_add (EV_A_ w); /* re-add, no matter what */
		2137	else
		2138	ev_timer_start (EV_A_ &w->timer);
		2139	}
		2140
		2141	}
		2142	}
		2143
		2144	#endif
		2145
		2146	void
		2147	ev_stat_stat (EV_P_ ev_stat *w)
		2148	{
		2149	if (lstat (w->path, &w->attr) < 0)
		2150	w->attr.st_nlink = 0;
		2151	else if (!w->attr.st_nlink)
		2152	w->attr.st_nlink = 1;
		2153	}
		2154
		2155	static void noinline
		2156	stat_timer_cb (EV_P_ ev_timer *w_, int revents)
		2157	{
		2158	ev_stat *w = (ev_stat *)(((char *)w_) - offsetof (ev_stat, timer));
		2159
		2160	/* we copy this here each the time so that */
		2161	/* prev has the old value when the callback gets invoked */
		2162	w->prev = w->attr;
		2163	ev_stat_stat (EV_A_ w);
		2164
		2165	/* memcmp doesn't work on netbsd, they.... do stuff to their struct stat */
		2166	if (
		2167	w->prev.st_dev != w->attr.st_dev
		2168	|| w->prev.st_ino != w->attr.st_ino
		2169	|| w->prev.st_mode != w->attr.st_mode
		2170	|| w->prev.st_nlink != w->attr.st_nlink
		2171	|| w->prev.st_uid != w->attr.st_uid
		2172	|| w->prev.st_gid != w->attr.st_gid
		2173	|| w->prev.st_rdev != w->attr.st_rdev
		2174	|| w->prev.st_size != w->attr.st_size
		2175	|| w->prev.st_atime != w->attr.st_atime
		2176	|| w->prev.st_mtime != w->attr.st_mtime
		2177	|| w->prev.st_ctime != w->attr.st_ctime
		2178	) {
		2179	#if EV_USE_INOTIFY
		2180	infy_del (EV_A_ w);
		2181	infy_add (EV_A_ w);
		2182	ev_stat_stat (EV_A_ w); /* avoid race... */
		2183	#endif
		2184
		2185	ev_feed_event (EV_A_ w, EV_STAT);
		2186	}
		2187	}
		2188
		2189	void
		2190	ev_stat_start (EV_P_ ev_stat *w)
		2191	{
		2192	if (expect_false (ev_is_active (w)))
		2193	return;
		2194
		2195	/* since we use memcmp, we need to clear any padding data etc. */
		2196	memset (&w->prev, 0, sizeof (ev_statdata));
		2197	memset (&w->attr, 0, sizeof (ev_statdata));
		2198
		2199	ev_stat_stat (EV_A_ w);
		2200
		2201	if (w->interval < MIN_STAT_INTERVAL)
		2202	w->interval = w->interval ? MIN_STAT_INTERVAL : DEF_STAT_INTERVAL;
		2203
		2204	ev_timer_init (&w->timer, stat_timer_cb, w->interval, w->interval);
		2205	ev_set_priority (&w->timer, ev_priority (w));
		2206
		2207	#if EV_USE_INOTIFY
		2208	infy_init (EV_A);
		2209
		2210	if (fs_fd >= 0)
		2211	infy_add (EV_A_ w);
		2212	else
		2213	#endif
		2214	ev_timer_start (EV_A_ &w->timer);
		2215
		2216	ev_start (EV_A_ (W)w, 1);
		2217	}
		2218
		2219	void
		2220	ev_stat_stop (EV_P_ ev_stat *w)
		2221	{
		2222	clear_pending (EV_A_ (W)w);
		2223	if (expect_false (!ev_is_active (w)))
		2224	return;
		2225
		2226	#if EV_USE_INOTIFY
		2227	infy_del (EV_A_ w);
		2228	#endif
		2229	ev_timer_stop (EV_A_ &w->timer);
		2230
		2231	ev_stop (EV_A_ (W)w);
		2232	}
		2233	#endif
		2234
		2235	#if EV_IDLE_ENABLE
		2236	void
		2237	ev_idle_start (EV_P_ ev_idle *w)
		2238	{
		2239	if (expect_false (ev_is_active (w)))
		2240	return;
		2241
		2242	pri_adjust (EV_A_ (W)w);
		2243
		2244	{
		2245	int active = ++idlecnt [ABSPRI (w)];
		2246
		2247	++idleall;
		2248	ev_start (EV_A_ (W)w, active);
		2249
		2250	array_needsize (ev_idle *, idles [ABSPRI (w)], idlemax [ABSPRI (w)], active, EMPTY2);
		2251	idles [ABSPRI (w)][active - 1] = w;
		2252	}
		2253	}
		2254
		2255	void
		2256	ev_idle_stop (EV_P_ ev_idle *w)
		2257	{
		2258	clear_pending (EV_A_ (W)w);
		2259	if (expect_false (!ev_is_active (w)))
		2260	return;
		2261
		2262	{
		2263	int active = ((W)w)->active;
		2264
		2265	idles [ABSPRI (w)][active - 1] = idles [ABSPRI (w)][--idlecnt [ABSPRI (w)]];
		2266	((W)idles [ABSPRI (w)][active - 1])->active = active;
		2267
		2268	ev_stop (EV_A_ (W)w);
		2269	--idleall;
		2270	}
		2271	}
		2272	#endif
		2273
		2274	void
		2275	ev_prepare_start (EV_P_ ev_prepare *w)
		2276	{
		2277	if (expect_false (ev_is_active (w)))
		2278	return;
		2279
		2280	ev_start (EV_A_ (W)w, ++preparecnt);
		2281	array_needsize (ev_prepare *, prepares, preparemax, preparecnt, EMPTY2);
		2282	prepares [preparecnt - 1] = w;
		2283	}
		2284
		2285	void
		2286	ev_prepare_stop (EV_P_ ev_prepare *w)
		2287	{
		2288	clear_pending (EV_A_ (W)w);
		2289	if (expect_false (!ev_is_active (w)))
		2290	return;
		2291
		2292	{
		2293	int active = ((W)w)->active;
		2294	prepares [active - 1] = prepares [--preparecnt];
		2295	((W)prepares [active - 1])->active = active;
		2296	}
		2297
		2298	ev_stop (EV_A_ (W)w);
		2299	}
		2300
		2301	void
		2302	ev_check_start (EV_P_ ev_check *w)
		2303	{
		2304	if (expect_false (ev_is_active (w)))
		2305	return;
		2306
		2307	ev_start (EV_A_ (W)w, ++checkcnt);
		2308	array_needsize (ev_check *, checks, checkmax, checkcnt, EMPTY2);
		2309	checks [checkcnt - 1] = w;
		2310	}
		2311
		2312	void
		2313	ev_check_stop (EV_P_ ev_check *w)
		2314	{
		2315	clear_pending (EV_A_ (W)w);
		2316	if (expect_false (!ev_is_active (w)))
		2317	return;
		2318
		2319	{
		2320	int active = ((W)w)->active;
		2321	checks [active - 1] = checks [--checkcnt];
		2322	((W)checks [active - 1])->active = active;
		2323	}
		2324
		2325	ev_stop (EV_A_ (W)w);
		2326	}
		2327
		2328	#if EV_EMBED_ENABLE
		2329	void noinline
		2330	ev_embed_sweep (EV_P_ ev_embed *w)
		2331	{
		2332	ev_loop (w->other, EVLOOP_NONBLOCK);
		2333	}
		2334
		2335	static void
		2336	embed_io_cb (EV_P_ ev_io *io, int revents)
		2337	{
		2338	ev_embed *w = (ev_embed *)(((char *)io) - offsetof (ev_embed, io));
		2339
		2340	if (ev_cb (w))
		2341	ev_feed_event (EV_A_ (W)w, EV_EMBED);
		2342	else
		2343	ev_loop (w->other, EVLOOP_NONBLOCK);
		2344	}
		2345
		2346	static void
		2347	embed_prepare_cb (EV_P_ ev_prepare *prepare, int revents)
		2348	{
		2349	ev_embed *w = (ev_embed *)(((char *)prepare) - offsetof (ev_embed, prepare));
		2350
		2351	{
		2352	struct ev_loop *loop = w->other;
		2353
		2354	while (fdchangecnt)
		2355	{
		2356	fd_reify (EV_A);
		2357	ev_loop (EV_A_ EVLOOP_NONBLOCK);
		2358	}
		2359	}
		2360	}
		2361
		2362	#if 0
		2363	static void
		2364	embed_idle_cb (EV_P_ ev_idle *idle, int revents)
		2365	{
		2366	ev_idle_stop (EV_A_ idle);
		2367	}
		2368	#endif
		2369
		2370	void
		2371	ev_embed_start (EV_P_ ev_embed *w)
		2372	{
		2373	if (expect_false (ev_is_active (w)))
		2374	return;
		2375
		2376	{
		2377	struct ev_loop *loop = w->other;
		2378	assert (("loop to be embedded is not embeddable", backend & ev_embeddable_backends ()));
		2379	ev_io_init (&w->io, embed_io_cb, backend_fd, EV_READ);
		2380	}
		2381
		2382	ev_set_priority (&w->io, ev_priority (w));
		2383	ev_io_start (EV_A_ &w->io);
		2384
		2385	ev_prepare_init (&w->prepare, embed_prepare_cb);
		2386	ev_set_priority (&w->prepare, EV_MINPRI);
		2387	ev_prepare_start (EV_A_ &w->prepare);
		2388
		2389	/*ev_idle_init (&w->idle, e,bed_idle_cb);*/
		2390
		2391	ev_start (EV_A_ (W)w, 1);
		2392	}
		2393
		2394	void
		2395	ev_embed_stop (EV_P_ ev_embed *w)
		2396	{
		2397	clear_pending (EV_A_ (W)w);
		2398	if (expect_false (!ev_is_active (w)))
		2399	return;
		2400
		2401	ev_io_stop (EV_A_ &w->io);
		2402	ev_prepare_stop (EV_A_ &w->prepare);
		2403
		2404	ev_stop (EV_A_ (W)w);
		2405	}
		2406	#endif
		2407
		2408	#if EV_FORK_ENABLE
		2409	void
		2410	ev_fork_start (EV_P_ ev_fork *w)
		2411	{
		2412	if (expect_false (ev_is_active (w)))
		2413	return;
		2414
		2415	ev_start (EV_A_ (W)w, ++forkcnt);
		2416	array_needsize (ev_fork *, forks, forkmax, forkcnt, EMPTY2);
		2417	forks [forkcnt - 1] = w;
		2418	}
		2419
		2420	void
		2421	ev_fork_stop (EV_P_ ev_fork *w)
		2422	{
		2423	clear_pending (EV_A_ (W)w);
		2424	if (expect_false (!ev_is_active (w)))
		2425	return;
		2426
		2427	{
		2428	int active = ((W)w)->active;
		2429	forks [active - 1] = forks [--forkcnt];
		2430	((W)forks [active - 1])->active = active;
		2431	}
		2432
		2433	ev_stop (EV_A_ (W)w);
		2434	}
		2435	#endif
		2436
		2437	#if EV_ASYNC_ENABLE
		2438	void
		2439	ev_async_start (EV_P_ ev_async *w)
		2440	{
		2441	if (expect_false (ev_is_active (w)))
		2442	return;
		2443
		2444	evpipe_init (EV_A);
		2445
		2446	ev_start (EV_A_ (W)w, ++asynccnt);
		2447	array_needsize (ev_async *, asyncs, asyncmax, asynccnt, EMPTY2);
		2448	asyncs [asynccnt - 1] = w;
		2449	}
		2450
		2451	void
		2452	ev_async_stop (EV_P_ ev_async *w)
		2453	{
		2454	clear_pending (EV_A_ (W)w);
		2455	if (expect_false (!ev_is_active (w)))
		2456	return;
		2457
		2458	{
		2459	int active = ((W)w)->active;
		2460	asyncs [active - 1] = asyncs [--asynccnt];
		2461	((W)asyncs [active - 1])->active = active;
		2462	}
		2463
		2464	ev_stop (EV_A_ (W)w);
		2465	}
		2466
		2467	void
		2468	ev_async_send (EV_P_ ev_async *w)
		2469	{
		2470	w->sent = 1;
		2471	evpipe_write (EV_A_ &gotasync);
		2472	}
		2473	#endif
		2474
1659	/*****************************************************************************/	2475	/*****************************************************************************/
1660		2476
1661	struct ev_once	2477	struct ev_once
1662	{	2478	{
1663	struct ev_io io;	2479	ev_io io;
1664	struct ev_timer to;	2480	ev_timer to;
1665	void (*cb)(int revents, void *arg);	2481	void (*cb)(int revents, void *arg);
1666	void *arg;	2482	void *arg;
1667	};	2483	};
1668		2484
1669	static void	2485	static void
…		…
1678		2494
1679	cb (revents, arg);	2495	cb (revents, arg);
1680	}	2496	}
1681		2497
1682	static void	2498	static void
1683	once_cb_io (EV_P_ struct ev_io *w, int revents)	2499	once_cb_io (EV_P_ ev_io *w, int revents)
1684	{	2500	{
1685	once_cb (EV_A_ (struct ev_once *)(((char *)w) - offsetof (struct ev_once, io)), revents);	2501	once_cb (EV_A_ (struct ev_once *)(((char *)w) - offsetof (struct ev_once, io)), revents);
1686	}	2502	}
1687		2503
1688	static void	2504	static void
1689	once_cb_to (EV_P_ struct ev_timer *w, int revents)	2505	once_cb_to (EV_P_ ev_timer *w, int revents)
1690	{	2506	{
1691	once_cb (EV_A_ (struct ev_once *)(((char *)w) - offsetof (struct ev_once, to)), revents);	2507	once_cb (EV_A_ (struct ev_once *)(((char *)w) - offsetof (struct ev_once, to)), revents);
1692	}	2508	}
1693		2509
1694	void	2510	void
…		…
1718	ev_timer_set (&once->to, timeout, 0.);	2534	ev_timer_set (&once->to, timeout, 0.);
1719	ev_timer_start (EV_A_ &once->to);	2535	ev_timer_start (EV_A_ &once->to);
1720	}	2536	}
1721	}	2537	}
1722		2538
		2539	#if EV_MULTIPLICITY
		2540	#include "ev_wrap.h"
		2541	#endif
		2542
1723	#ifdef __cplusplus	2543	#ifdef __cplusplus
1724	}	2544	}
1725	#endif	2545	#endif
1726		2546

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