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Comparing libev/ev.c (file contents):
Revision 1.141 by root, Mon Nov 26 20:33:58 2007 UTC vs.
Revision 1.230 by root, Fri May 2 08:13:16 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
…		…
246	perror (msg);	363	perror (msg);
247	abort ();	364	abort ();
248	}	365	}
249	}	366	}
250		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
251	static void *(*alloc)(void *ptr, long size);	383	static void *(*alloc)(void *ptr, long size) = ev_realloc_emul;
252		384
253	void	385	void
254	ev_set_allocator (void *(*cb)(void *ptr, long size))	386	ev_set_allocator (void *(*cb)(void *ptr, long size))
255	{	387	{
256	alloc = cb;	388	alloc = cb;
257	}	389	}
258		390
259	static void *	391	inline_speed void *
260	ev_realloc (void *ptr, long size)	392	ev_realloc (void *ptr, long size)
261	{	393	{
262	ptr = alloc ? alloc (ptr, size) : realloc (ptr, size);	394	ptr = alloc (ptr, size);
263		395
264	if (!ptr && size)	396	if (!ptr && size)
265	{	397	{
266	fprintf (stderr, "libev: cannot allocate %ld bytes, aborting.", size);	398	fprintf (stderr, "libev: cannot allocate %ld bytes, aborting.", size);
267	abort ();	399	abort ();
…		…
288	typedef struct	420	typedef struct
289	{	421	{
290	W w;	422	W w;
291	int events;	423	int events;
292	} ANPENDING;	424	} ANPENDING;
		425
		426	#if EV_USE_INOTIFY
		427	typedef struct
		428	{
		429	WL head;
		430	} ANFS;
		431	#endif
293		432
294	#if EV_MULTIPLICITY	433	#if EV_MULTIPLICITY
295		434
296	struct ev_loop	435	struct ev_loop
297	{	436	{
…		…
354	{	493	{
355	return ev_rt_now;	494	return ev_rt_now;
356	}	495	}
357	#endif	496	#endif
358		497
359	#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	}
360		552
361	#define array_needsize(type,base,cur,cnt,init) \	553	#define array_needsize(type,base,cur,cnt,init) \
362	if (expect_false ((cnt) > cur)) \	554	if (expect_false ((cnt) > (cur))) \
363	{ \	555	{ \
364	int newcnt = cur; \	556	int ocur_ = (cur); \
365	do \	557	(base) = (type *)array_realloc \
366	{ \	558	(sizeof (type), (base), &(cur), (cnt)); \
367	newcnt = array_roundsize (type, newcnt << 1); \	559	init ((base) + (ocur_), (cur) - ocur_); \
368	} \
369	while ((cnt) > newcnt); \
370	\
371	base = (type *)ev_realloc (base, sizeof (type) * (newcnt));\
372	init (base + cur, newcnt - cur); \
373	cur = newcnt; \
374	}	560	}
375		561
		562	#if 0
376	#define array_slim(type,stem) \	563	#define array_slim(type,stem) \
377	if (stem ## max < array_roundsize (stem ## cnt >> 2)) \	564	if (stem ## max < array_roundsize (stem ## cnt >> 2)) \
378	{ \	565	{ \
379	stem ## max = array_roundsize (stem ## cnt >> 1); \	566	stem ## max = array_roundsize (stem ## cnt >> 1); \
380	base = (type *)ev_realloc (base, sizeof (type) * (stem ## max));\	567	base = (type *)ev_realloc (base, sizeof (type) * (stem ## max));\
381	fprintf (stderr, "slimmed down " # stem " to %d\n", stem ## max);/*D*/\	568	fprintf (stderr, "slimmed down " # stem " to %d\n", stem ## max);/*D*/\
382	}	569	}
		570	#endif
383		571
384	#define array_free(stem, idx) \	572	#define array_free(stem, idx) \
385	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;
386		574
387	/*****************************************************************************/	575	/*****************************************************************************/
388		576
389	void noinline	577	void noinline
390	ev_feed_event (EV_P_ void *w, int revents)	578	ev_feed_event (EV_P_ void *w, int revents)
391	{	579	{
392	W w_ = (W)w;	580	W w_ = (W)w;
		581	int pri = ABSPRI (w_);
393		582
394	if (expect_false (w_->pending))	583	if (expect_false (w_->pending))
		584	pendings [pri][w_->pending - 1].events |= revents;
		585	else
395	{	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_;
396	pendings [ABSPRI (w_)][w_->pending - 1].events |= revents;	590	pendings [pri][w_->pending - 1].events = revents;
397	return;
398	}	591	}
399
400	w_->pending = ++pendingcnt [ABSPRI (w_)];
401	array_needsize (ANPENDING, pendings [ABSPRI (w_)], pendingmax [ABSPRI (w_)], pendingcnt [ABSPRI (w_)], EMPTY2);
402	pendings [ABSPRI (w_)][w_->pending - 1].w = w_;
403	pendings [ABSPRI (w_)][w_->pending - 1].events = revents;
404	}	592	}
405		593
406	void inline_size	594	void inline_speed
407	queue_events (EV_P_ W *events, int eventcnt, int type)	595	queue_events (EV_P_ W *events, int eventcnt, int type)
408	{	596	{
409	int i;	597	int i;
410		598
411	for (i = 0; i < eventcnt; ++i)	599	for (i = 0; i < eventcnt; ++i)
…		…
443	}	631	}
444		632
445	void	633	void
446	ev_feed_fd_event (EV_P_ int fd, int revents)	634	ev_feed_fd_event (EV_P_ int fd, int revents)
447	{	635	{
		636	if (fd >= 0 && fd < anfdmax)
448	fd_event (EV_A_ fd, revents);	637	fd_event (EV_A_ fd, revents);
449	}	638	}
450		639
451	void inline_size	640	void inline_size
452	fd_reify (EV_P)	641	fd_reify (EV_P)
453	{	642	{
…		…
457	{	646	{
458	int fd = fdchanges [i];	647	int fd = fdchanges [i];
459	ANFD *anfd = anfds + fd;	648	ANFD *anfd = anfds + fd;
460	ev_io *w;	649	ev_io *w;
461		650
462	int events = 0;	651	unsigned char events = 0;
463		652
464	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)
465	events |= w->events;	654	events |= (unsigned char)w->events;
466		655
467	#if EV_SELECT_IS_WINSOCKET	656	#if EV_SELECT_IS_WINSOCKET
468	if (events)	657	if (events)
469	{	658	{
470	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
471	anfd->handle = _get_osfhandle (fd);	663	anfd->handle = _get_osfhandle (fd);
		664	#endif
472	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));
473	}	666	}
474	#endif	667	#endif
475		668
		669	{
		670	unsigned char o_events = anfd->events;
		671	unsigned char o_reify = anfd->reify;
		672
476	anfd->reify = 0;	673	anfd->reify = 0;
477
478	backend_modify (EV_A_ fd, anfd->events, events);
479	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	}
480	}	679	}
481		680
482	fdchangecnt = 0;	681	fdchangecnt = 0;
483	}	682	}
484		683
485	void inline_size	684	void inline_size
486	fd_change (EV_P_ int fd)	685	fd_change (EV_P_ int fd, int flags)
487	{	686	{
488	if (expect_false (anfds [fd].reify))	687	unsigned char reify = anfds [fd].reify;
489	return;
490
491	anfds [fd].reify = 1;	688	anfds [fd].reify |= flags;
492		689
		690	if (expect_true (!reify))
		691	{
493	++fdchangecnt;	692	++fdchangecnt;
494	array_needsize (int, fdchanges, fdchangemax, fdchangecnt, EMPTY2);	693	array_needsize (int, fdchanges, fdchangemax, fdchangecnt, EMPTY2);
495	fdchanges [fdchangecnt - 1] = fd;	694	fdchanges [fdchangecnt - 1] = fd;
		695	}
496	}	696	}
497		697
498	void inline_speed	698	void inline_speed
499	fd_kill (EV_P_ int fd)	699	fd_kill (EV_P_ int fd)
500	{	700	{
…		…
547	static void noinline	747	static void noinline
548	fd_rearm_all (EV_P)	748	fd_rearm_all (EV_P)
549	{	749	{
550	int fd;	750	int fd;
551		751
552	/* this should be highly optimised to not do anything but set a flag */
553	for (fd = 0; fd < anfdmax; ++fd)	752	for (fd = 0; fd < anfdmax; ++fd)
554	if (anfds [fd].events)	753	if (anfds [fd].events)
555	{	754	{
556	anfds [fd].events = 0;	755	anfds [fd].events = 0;
557	fd_change (EV_A_ fd);	756	fd_change (EV_A_ fd, EV_IOFDSET | 1);
558	}	757	}
559	}	758	}
560		759
561	/*****************************************************************************/	760	/*****************************************************************************/
562		761
		762	/* towards the root */
563	void inline_speed	763	void inline_speed
564	upheap (WT *heap, int k)	764	upheap (WT *heap, int k)
565	{	765	{
566	WT w = heap [k];	766	WT w = heap [k];
567		767
568	while (k && heap [k >> 1]->at > w->at)	768	for (;;)
569	{	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
570	heap [k] = heap [k >> 1];	776	heap [k] = heap [p];
571	((W)heap [k])->active = k + 1;	777	ev_active (heap [k]) = k;
572	k >>= 1;	778	k = p;
573	}	779	}
574		780
575	heap [k] = w;	781	heap [k] = w;
576	((W)heap [k])->active = k + 1;	782	ev_active (heap [k]) = k;
577
578	}	783	}
579		784
		785	/* away from the root */
580	void inline_speed	786	void inline_speed
581	downheap (WT *heap, int N, int k)	787	downheap (WT *heap, int N, int k)
582	{	788	{
583	WT w = heap [k];	789	WT w = heap [k];
584		790
585	while (k < (N >> 1))	791	for (;;)
586	{	792	{
587	int j = k << 1;	793	int c = k << 1;
588		794
589	if (j + 1 < N && heap [j]->at > heap [j + 1]->at)	795	if (c > N)
590	++j;
591
592	if (w->at <= heap [j]->at)
593	break;	796	break;
594		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
595	heap [k] = heap [j];	804	heap [k] = heap [c];
596	((W)heap [k])->active = k + 1;	805	ev_active (heap [k]) = k;
		806
597	k = j;	807	k = c;
598	}	808	}
599		809
600	heap [k] = w;	810	heap [k] = w;
601	((W)heap [k])->active = k + 1;	811	ev_active (heap [k]) = k;
602	}	812	}
603		813
604	void inline_size	814	void inline_size
605	adjustheap (WT *heap, int N, int k)	815	adjustheap (WT *heap, int N, int k)
606	{	816	{
…		…
611	/*****************************************************************************/	821	/*****************************************************************************/
612		822
613	typedef struct	823	typedef struct
614	{	824	{
615	WL head;	825	WL head;
616	sig_atomic_t volatile gotsig;	826	EV_ATOMIC_T gotsig;
617	} ANSIG;	827	} ANSIG;
618		828
619	static ANSIG *signals;	829	static ANSIG *signals;
620	static int signalmax;	830	static int signalmax;
621		831
622	static int sigpipe [2];	832	static EV_ATOMIC_T gotsig;
623	static sig_atomic_t volatile gotsig;
624	static ev_io sigev;
625		833
626	void inline_size	834	void inline_size
627	signals_init (ANSIG *base, int count)	835	signals_init (ANSIG *base, int count)
628	{	836	{
629	while (count--)	837	while (count--)
…		…
633		841
634	++base;	842	++base;
635	}	843	}
636	}	844	}
637		845
638	static void	846	/*****************************************************************************/
639	sighandler (int signum)
640	{
641	#if _WIN32
642	signal (signum, sighandler);
643	#endif
644		847
645	signals [signum - 1].gotsig = 1;
646
647	if (!gotsig)
648	{
649	int old_errno = errno;
650	gotsig = 1;
651	write (sigpipe [1], &signum, 1);
652	errno = old_errno;
653	}
654	}
655
656	void noinline
657	ev_feed_signal_event (EV_P_ int signum)
658	{
659	WL w;
660
661	#if EV_MULTIPLICITY
662	assert (("feeding signal events is only supported in the default loop", loop == ev_default_loop_ptr));
663	#endif
664
665	--signum;
666
667	if (signum < 0 || signum >= signalmax)
668	return;
669
670	signals [signum].gotsig = 0;
671
672	for (w = signals [signum].head; w; w = w->next)
673	ev_feed_event (EV_A_ (W)w, EV_SIGNAL);
674	}
675
676	static void
677	sigcb (EV_P_ ev_io *iow, int revents)
678	{
679	int signum;
680
681	read (sigpipe [0], &revents, 1);
682	gotsig = 0;
683
684	for (signum = signalmax; signum--; )
685	if (signals [signum].gotsig)
686	ev_feed_signal_event (EV_A_ signum + 1);
687	}
688
689	void inline_size	848	void inline_speed
690	fd_intern (int fd)	849	fd_intern (int fd)
691	{	850	{
692	#ifdef _WIN32	851	#ifdef _WIN32
693	int arg = 1;	852	int arg = 1;
694	ioctlsocket (_get_osfhandle (fd), FIONBIO, &arg);	853	ioctlsocket (_get_osfhandle (fd), FIONBIO, &arg);
…		…
697	fcntl (fd, F_SETFL, O_NONBLOCK);	856	fcntl (fd, F_SETFL, O_NONBLOCK);
698	#endif	857	#endif
699	}	858	}
700		859
701	static void noinline	860	static void noinline
702	siginit (EV_P)	861	evpipe_init (EV_P)
703	{	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
704	fd_intern (sigpipe [0]);	878	fd_intern (evpipe [0]);
705	fd_intern (sigpipe [1]);	879	fd_intern (evpipe [1]);
		880	ev_io_set (&pipeev, evpipe [0], EV_READ);
		881	}
706		882
707	ev_io_set (&sigev, sigpipe [0], EV_READ);
708	ev_io_start (EV_A_ &sigev);	883	ev_io_start (EV_A_ &pipeev);
709	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
710	}	951	}
711		952
712	/*****************************************************************************/	953	/*****************************************************************************/
713		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
714	static ev_child *childs [PID_HASHSIZE];	992	static WL childs [EV_PID_HASHSIZE];
715		993
716	#ifndef _WIN32	994	#ifndef _WIN32
717		995
718	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	}
719		1020
720	#ifndef WCONTINUED	1021	#ifndef WCONTINUED
721	# define WCONTINUED 0	1022	# define WCONTINUED 0
722	#endif	1023	#endif
723		1024
724	void inline_speed
725	child_reap (EV_P_ ev_signal *sw, int chain, int pid, int status)
726	{
727	ev_child *w;
728
729	for (w = (ev_child *)childs [chain & (PID_HASHSIZE - 1)]; w; w = (ev_child *)((WL)w)->next)
730	if (w->pid == pid || !w->pid)
731	{
732	ev_priority (w) = ev_priority (sw); /* need to do it *now* */
733	w->rpid = pid;
734	w->rstatus = status;
735	ev_feed_event (EV_A_ (W)w, EV_CHILD);
736	}
737	}
738
739	static void	1025	static void
740	childcb (EV_P_ ev_signal *sw, int revents)	1026	childcb (EV_P_ ev_signal *sw, int revents)
741	{	1027	{
742	int pid, status;	1028	int pid, status;
743		1029
		1030	/* some systems define WCONTINUED but then fail to support it (linux 2.4) */
744	if (0 < (pid = waitpid (-1, &status, WNOHANG | WUNTRACED | WCONTINUED)))	1031	if (0 >= (pid = waitpid (-1, &status, WNOHANG | WUNTRACED | WCONTINUED)))
745	{	1032	if (!WCONTINUED
		1033	|| errno != EINVAL
		1034	|| 0 >= (pid = waitpid (-1, &status, WNOHANG | WUNTRACED)))
		1035	return;
		1036
746	/* 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 */
747	/* 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 */
748	ev_feed_event (EV_A_ (W)sw, EV_SIGNAL);	1039	ev_feed_event (EV_A_ (W)sw, EV_SIGNAL);
749		1040
750	child_reap (EV_A_ sw, pid, pid, status);	1041	child_reap (EV_A_ pid, pid, status);
		1042	if (EV_PID_HASHSIZE > 1)
751	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 */
752	}
753	}	1044	}
754		1045
755	#endif	1046	#endif
756		1047
757	/*****************************************************************************/	1048	/*****************************************************************************/
…		…
829	}	1120	}
830		1121
831	unsigned int	1122	unsigned int
832	ev_embeddable_backends (void)	1123	ev_embeddable_backends (void)
833	{	1124	{
834	return EVBACKEND_EPOLL	1125	int flags = EVBACKEND_EPOLL | EVBACKEND_KQUEUE | EVBACKEND_PORT;
835	| EVBACKEND_KQUEUE	1126
836	| 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;
837	}	1132	}
838		1133
839	unsigned int	1134	unsigned int
840	ev_backend (EV_P)	1135	ev_backend (EV_P)
841	{	1136	{
842	return backend;	1137	return backend;
843	}	1138	}
844		1139
845	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
846	loop_init (EV_P_ unsigned int flags)	1159	loop_init (EV_P_ unsigned int flags)
847	{	1160	{
848	if (!backend)	1161	if (!backend)
849	{	1162	{
850	#if EV_USE_MONOTONIC	1163	#if EV_USE_MONOTONIC
…		…
853	if (!clock_gettime (CLOCK_MONOTONIC, &ts))	1166	if (!clock_gettime (CLOCK_MONOTONIC, &ts))
854	have_monotonic = 1;	1167	have_monotonic = 1;
855	}	1168	}
856	#endif	1169	#endif
857		1170
858	ev_rt_now = ev_time ();	1171	ev_rt_now = ev_time ();
859	mn_now = get_clock ();	1172	mn_now = get_clock ();
860	now_floor = mn_now;	1173	now_floor = mn_now;
861	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
862		1190
863	if (!(flags & EVFLAG_NOENV)	1191	if (!(flags & EVFLAG_NOENV)
864	&& !enable_secure ()	1192	&& !enable_secure ()
865	&& getenv ("LIBEV_FLAGS"))	1193	&& getenv ("LIBEV_FLAGS"))
866	flags = atoi (getenv ("LIBEV_FLAGS"));	1194	flags = atoi (getenv ("LIBEV_FLAGS"));
867		1195
868	if (!(flags & 0x0000ffffUL))	1196	if (!(flags & 0x0000ffffU))
869	flags |= ev_recommended_backends ();	1197	flags |= ev_recommended_backends ();
870		1198
871	backend = 0;
872	#if EV_USE_PORT	1199	#if EV_USE_PORT
873	if (!backend && (flags & EVBACKEND_PORT )) backend = port_init (EV_A_ flags);	1200	if (!backend && (flags & EVBACKEND_PORT )) backend = port_init (EV_A_ flags);
874	#endif	1201	#endif
875	#if EV_USE_KQUEUE	1202	#if EV_USE_KQUEUE
876	if (!backend && (flags & EVBACKEND_KQUEUE)) backend = kqueue_init (EV_A_ flags);	1203	if (!backend && (flags & EVBACKEND_KQUEUE)) backend = kqueue_init (EV_A_ flags);
…		…
883	#endif	1210	#endif
884	#if EV_USE_SELECT	1211	#if EV_USE_SELECT
885	if (!backend && (flags & EVBACKEND_SELECT)) backend = select_init (EV_A_ flags);	1212	if (!backend && (flags & EVBACKEND_SELECT)) backend = select_init (EV_A_ flags);
886	#endif	1213	#endif
887		1214
888	ev_init (&sigev, sigcb);	1215	ev_init (&pipeev, pipecb);
889	ev_set_priority (&sigev, EV_MAXPRI);	1216	ev_set_priority (&pipeev, EV_MAXPRI);
890	}	1217	}
891	}	1218	}
892		1219
893	static void	1220	static void noinline
894	loop_destroy (EV_P)	1221	loop_destroy (EV_P)
895	{	1222	{
896	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);
897		1249
898	#if EV_USE_PORT	1250	#if EV_USE_PORT
899	if (backend == EVBACKEND_PORT ) port_destroy (EV_A);	1251	if (backend == EVBACKEND_PORT ) port_destroy (EV_A);
900	#endif	1252	#endif
901	#if EV_USE_KQUEUE	1253	#if EV_USE_KQUEUE
…		…
910	#if EV_USE_SELECT	1262	#if EV_USE_SELECT
911	if (backend == EVBACKEND_SELECT) select_destroy (EV_A);	1263	if (backend == EVBACKEND_SELECT) select_destroy (EV_A);
912	#endif	1264	#endif
913		1265
914	for (i = NUMPRI; i--; )	1266	for (i = NUMPRI; i--; )
		1267	{
915	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;
916		1275
917	/* have to use the microsoft-never-gets-it-right macro */	1276	/* have to use the microsoft-never-gets-it-right macro */
918	array_free (fdchange, EMPTY0);	1277	array_free (fdchange, EMPTY);
919	array_free (timer, EMPTY0);	1278	array_free (timer, EMPTY);
920	#if EV_PERIODIC_ENABLE	1279	#if EV_PERIODIC_ENABLE
921	array_free (periodic, EMPTY0);	1280	array_free (periodic, EMPTY);
922	#endif	1281	#endif
		1282	#if EV_FORK_ENABLE
923	array_free (idle, EMPTY0);	1283	array_free (fork, EMPTY);
		1284	#endif
924	array_free (prepare, EMPTY0);	1285	array_free (prepare, EMPTY);
925	array_free (check, EMPTY0);	1286	array_free (check, EMPTY);
		1287	#if EV_ASYNC_ENABLE
		1288	array_free (async, EMPTY);
		1289	#endif
926		1290
927	backend = 0;	1291	backend = 0;
928	}	1292	}
929		1293
930	static void	1294	#if EV_USE_INOTIFY
		1295	void inline_size infy_fork (EV_P);
		1296	#endif
		1297
		1298	void inline_size
931	loop_fork (EV_P)	1299	loop_fork (EV_P)
932	{	1300	{
933	#if EV_USE_PORT	1301	#if EV_USE_PORT
934	if (backend == EVBACKEND_PORT ) port_fork (EV_A);	1302	if (backend == EVBACKEND_PORT ) port_fork (EV_A);
935	#endif	1303	#endif
…		…
937	if (backend == EVBACKEND_KQUEUE) kqueue_fork (EV_A);	1305	if (backend == EVBACKEND_KQUEUE) kqueue_fork (EV_A);
938	#endif	1306	#endif
939	#if EV_USE_EPOLL	1307	#if EV_USE_EPOLL
940	if (backend == EVBACKEND_EPOLL ) epoll_fork (EV_A);	1308	if (backend == EVBACKEND_EPOLL ) epoll_fork (EV_A);
941	#endif	1309	#endif
		1310	#if EV_USE_INOTIFY
		1311	infy_fork (EV_A);
		1312	#endif
942		1313
943	if (ev_is_active (&sigev))	1314	if (ev_is_active (&pipeev))
944	{	1315	{
945	/* 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
946		1322
947	ev_ref (EV_A);	1323	ev_ref (EV_A);
948	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	{
949	close (sigpipe [0]);	1333	close (evpipe [0]);
950	close (sigpipe [1]);	1334	close (evpipe [1]);
		1335	}
951		1336
952	while (pipe (sigpipe))
953	syserr ("(libev) error creating pipe");
954
955	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);
956	}	1340	}
957		1341
958	postfork = 0;	1342	postfork = 0;
959	}	1343	}
960		1344
…		…
982	}	1366	}
983		1367
984	void	1368	void
985	ev_loop_fork (EV_P)	1369	ev_loop_fork (EV_P)
986	{	1370	{
987	postfork = 1;	1371	postfork = 1; /* must be in line with ev_default_fork */
988	}	1372	}
989		1373
990	#endif	1374	#endif
991		1375
992	#if EV_MULTIPLICITY	1376	#if EV_MULTIPLICITY
…		…
995	#else	1379	#else
996	int	1380	int
997	ev_default_loop (unsigned int flags)	1381	ev_default_loop (unsigned int flags)
998	#endif	1382	#endif
999	{	1383	{
1000	if (sigpipe [0] == sigpipe [1])
1001	if (pipe (sigpipe))
1002	return 0;
1003
1004	if (!ev_default_loop_ptr)	1384	if (!ev_default_loop_ptr)
1005	{	1385	{
1006	#if EV_MULTIPLICITY	1386	#if EV_MULTIPLICITY
1007	struct ev_loop *loop = ev_default_loop_ptr = &default_loop_struct;	1387	struct ev_loop *loop = ev_default_loop_ptr = &default_loop_struct;
1008	#else	1388	#else
…		…
1011		1391
1012	loop_init (EV_A_ flags);	1392	loop_init (EV_A_ flags);
1013		1393
1014	if (ev_backend (EV_A))	1394	if (ev_backend (EV_A))
1015	{	1395	{
1016	siginit (EV_A);
1017
1018	#ifndef _WIN32	1396	#ifndef _WIN32
1019	ev_signal_init (&childev, childcb, SIGCHLD);	1397	ev_signal_init (&childev, childcb, SIGCHLD);
1020	ev_set_priority (&childev, EV_MAXPRI);	1398	ev_set_priority (&childev, EV_MAXPRI);
1021	ev_signal_start (EV_A_ &childev);	1399	ev_signal_start (EV_A_ &childev);
1022	ev_unref (EV_A); /* child watcher should not keep loop alive */	1400	ev_unref (EV_A); /* child watcher should not keep loop alive */
…		…
1039	#ifndef _WIN32	1417	#ifndef _WIN32
1040	ev_ref (EV_A); /* child watcher */	1418	ev_ref (EV_A); /* child watcher */
1041	ev_signal_stop (EV_A_ &childev);	1419	ev_signal_stop (EV_A_ &childev);
1042	#endif	1420	#endif
1043		1421
1044	ev_ref (EV_A); /* signal watcher */
1045	ev_io_stop (EV_A_ &sigev);
1046
1047	close (sigpipe [0]); sigpipe [0] = 0;
1048	close (sigpipe [1]); sigpipe [1] = 0;
1049
1050	loop_destroy (EV_A);	1422	loop_destroy (EV_A);
1051	}	1423	}
1052		1424
1053	void	1425	void
1054	ev_default_fork (void)	1426	ev_default_fork (void)
…		…
1056	#if EV_MULTIPLICITY	1428	#if EV_MULTIPLICITY
1057	struct ev_loop *loop = ev_default_loop_ptr;	1429	struct ev_loop *loop = ev_default_loop_ptr;
1058	#endif	1430	#endif
1059		1431
1060	if (backend)	1432	if (backend)
1061	postfork = 1;	1433	postfork = 1; /* must be in line with ev_loop_fork */
1062	}	1434	}
1063		1435
1064	/*****************************************************************************/	1436	/*****************************************************************************/
1065		1437
1066	int inline_size	1438	void
1067	any_pending (EV_P)	1439	ev_invoke (EV_P_ void *w, int revents)
1068	{	1440	{
1069	int pri;	1441	EV_CB_INVOKE ((W)w, revents);
1070
1071	for (pri = NUMPRI; pri--; )
1072	if (pendingcnt [pri])
1073	return 1;
1074
1075	return 0;
1076	}	1442	}
1077		1443
1078	void inline_speed	1444	void inline_speed
1079	call_pending (EV_P)	1445	call_pending (EV_P)
1080	{	1446	{
…		…
1085	{	1451	{
1086	ANPENDING *p = pendings [pri] + --pendingcnt [pri];	1452	ANPENDING *p = pendings [pri] + --pendingcnt [pri];
1087		1453
1088	if (expect_true (p->w))	1454	if (expect_true (p->w))
1089	{	1455	{
1090	assert (("non-pending watcher on pending list", p->w->pending));	1456	/*assert (("non-pending watcher on pending list", p->w->pending));*/
1091		1457
1092	p->w->pending = 0;	1458	p->w->pending = 0;
1093	EV_CB_INVOKE (p->w, p->events);	1459	EV_CB_INVOKE (p->w, p->events);
1094	}	1460	}
1095	}	1461	}
1096	}	1462	}
1097		1463
1098	void inline_size	1464	void inline_size
1099	timers_reify (EV_P)	1465	timers_reify (EV_P)
1100	{	1466	{
1101	while (timercnt && ((WT)timers [0])->at <= mn_now)	1467	while (timercnt && ev_at (timers [1]) <= mn_now)
1102	{	1468	{
1103	ev_timer *w = timers [0];	1469	ev_timer *w = (ev_timer *)timers [1];
1104		1470
1105	assert (("inactive timer on timer heap detected", ev_is_active (w)));	1471	/*assert (("inactive timer on timer heap detected", ev_is_active (w)));*/
1106		1472
1107	/* first reschedule or stop timer */	1473	/* first reschedule or stop timer */
1108	if (w->repeat)	1474	if (w->repeat)
1109	{	1475	{
1110	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.));
1111		1477
1112	((WT)w)->at += w->repeat;	1478	ev_at (w) += w->repeat;
1113	if (((WT)w)->at < mn_now)	1479	if (ev_at (w) < mn_now)
1114	((WT)w)->at = mn_now;	1480	ev_at (w) = mn_now;
1115		1481
1116	downheap ((WT *)timers, timercnt, 0);	1482	downheap (timers, timercnt, 1);
1117	}	1483	}
1118	else	1484	else
1119	ev_timer_stop (EV_A_ w); /* nonrepeating: stop timer */	1485	ev_timer_stop (EV_A_ w); /* nonrepeating: stop timer */
1120		1486
1121	ev_feed_event (EV_A_ (W)w, EV_TIMEOUT);	1487	ev_feed_event (EV_A_ (W)w, EV_TIMEOUT);
…		…
1124		1490
1125	#if EV_PERIODIC_ENABLE	1491	#if EV_PERIODIC_ENABLE
1126	void inline_size	1492	void inline_size
1127	periodics_reify (EV_P)	1493	periodics_reify (EV_P)
1128	{	1494	{
1129	while (periodiccnt && ((WT)periodics [0])->at <= ev_rt_now)	1495	while (periodiccnt && ev_at (periodics [1]) <= ev_rt_now)
1130	{	1496	{
1131	ev_periodic *w = periodics [0];	1497	ev_periodic *w = (ev_periodic *)periodics [1];
1132		1498
1133	assert (("inactive timer on periodic heap detected", ev_is_active (w)));	1499	/*assert (("inactive timer on periodic heap detected", ev_is_active (w)));*/
1134		1500
1135	/* first reschedule or stop timer */	1501	/* first reschedule or stop timer */
1136	if (w->reschedule_cb)	1502	if (w->reschedule_cb)
1137	{	1503	{
1138	((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);
1139	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));
1140	downheap ((WT *)periodics, periodiccnt, 0);	1506	downheap (periodics, periodiccnt, 1);
1141	}	1507	}
1142	else if (w->interval)	1508	else if (w->interval)
1143	{	1509	{
1144	((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;
1145	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));
1146	downheap ((WT *)periodics, periodiccnt, 0);	1513	downheap (periodics, periodiccnt, 1);
1147	}	1514	}
1148	else	1515	else
1149	ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */	1516	ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */
1150		1517
1151	ev_feed_event (EV_A_ (W)w, EV_PERIODIC);	1518	ev_feed_event (EV_A_ (W)w, EV_PERIODIC);
…		…
1158	int i;	1525	int i;
1159		1526
1160	/* adjust periodics after time jump */	1527	/* adjust periodics after time jump */
1161	for (i = 0; i < periodiccnt; ++i)	1528	for (i = 0; i < periodiccnt; ++i)
1162	{	1529	{
1163	ev_periodic *w = periodics [i];	1530	ev_periodic *w = (ev_periodic *)periodics [i];
1164		1531
1165	if (w->reschedule_cb)	1532	if (w->reschedule_cb)
1166	((WT)w)->at = w->reschedule_cb (w, ev_rt_now);	1533	ev_at (w) = w->reschedule_cb (w, ev_rt_now);
1167	else if (w->interval)	1534	else if (w->interval)
1168	((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;
1169	}	1536	}
1170		1537
1171	/* now rebuild the heap */	1538	/* now rebuild the heap */
1172	for (i = periodiccnt >> 1; i--; )	1539	for (i = periodiccnt >> 1; i--; )
1173	downheap ((WT *)periodics, periodiccnt, i);	1540	downheap (periodics, periodiccnt, i);
1174	}	1541	}
1175	#endif	1542	#endif
1176		1543
		1544	#if EV_IDLE_ENABLE
1177	int inline_size	1545	void inline_size
1178	time_update_monotonic (EV_P)	1546	idle_reify (EV_P)
1179	{	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
1180	mn_now = get_clock ();	1577	mn_now = get_clock ();
1181		1578
		1579	/* only fetch the realtime clock every 0.5*MIN_TIMEJUMP seconds */
		1580	/* interpolate in the meantime */
1182	if (expect_true (mn_now - now_floor < MIN_TIMEJUMP * .5))	1581	if (expect_true (mn_now - now_floor < MIN_TIMEJUMP * .5))
1183	{	1582	{
1184	ev_rt_now = rtmn_diff + mn_now;	1583	ev_rt_now = rtmn_diff + mn_now;
1185	return 0;	1584	return;
1186	}	1585	}
1187	else	1586
1188	{
1189	now_floor = mn_now;	1587	now_floor = mn_now;
1190	ev_rt_now = ev_time ();	1588	ev_rt_now = ev_time ();
1191	return 1;
1192	}
1193	}
1194		1589
1195	void inline_size	1590	/* loop a few times, before making important decisions.
1196	time_update (EV_P)	1591	* on the choice of "4": one iteration isn't enough,
1197	{	1592	* in case we get preempted during the calls to
1198	int i;	1593	* ev_time and get_clock. a second call is almost guaranteed
1199		1594	* to succeed in that case, though. and looping a few more times
1200	#if EV_USE_MONOTONIC	1595	* doesn't hurt either as we only do this on time-jumps or
1201	if (expect_true (have_monotonic))	1596	* in the unlikely event of having been preempted here.
1202	{	1597	*/
1203	if (time_update_monotonic (EV_A))	1598	for (i = 4; --i; )
1204	{	1599	{
1205	ev_tstamp odiff = rtmn_diff;
1206
1207	/* loop a few times, before making important decisions.
1208	* on the choice of "4": one iteration isn't enough,
1209	* in case we get preempted during the calls to
1210	* ev_time and get_clock. a second call is almost guarenteed
1211	* to succeed in that case, though. and looping a few more times
1212	* doesn't hurt either as we only do this on time-jumps or
1213	* in the unlikely event of getting preempted here.
1214	*/
1215	for (i = 4; --i; )
1216	{
1217	rtmn_diff = ev_rt_now - mn_now;	1600	rtmn_diff = ev_rt_now - mn_now;
1218		1601
1219	if (fabs (odiff - rtmn_diff) < MIN_TIMEJUMP)	1602	if (fabs (odiff - rtmn_diff) < MIN_TIMEJUMP)
1220	return; /* all is well */	1603	return; /* all is well */
1221		1604
1222	ev_rt_now = ev_time ();	1605	ev_rt_now = ev_time ();
1223	mn_now = get_clock ();	1606	mn_now = get_clock ();
1224	now_floor = mn_now;	1607	now_floor = mn_now;
1225	}	1608	}
1226		1609
1227	# if EV_PERIODIC_ENABLE	1610	# if EV_PERIODIC_ENABLE
1228	periodics_reschedule (EV_A);	1611	periodics_reschedule (EV_A);
1229	# endif	1612	# endif
1230	/* no timer adjustment, as the monotonic clock doesn't jump */	1613	/* no timer adjustment, as the monotonic clock doesn't jump */
1231	/* timers_reschedule (EV_A_ rtmn_diff - odiff) */	1614	/* timers_reschedule (EV_A_ rtmn_diff - odiff) */
1232	}
1233	}	1615	}
1234	else	1616	else
1235	#endif	1617	#endif
1236	{	1618	{
1237	ev_rt_now = ev_time ();	1619	ev_rt_now = ev_time ();
1238		1620
1239	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))
1240	{	1622	{
1241	#if EV_PERIODIC_ENABLE	1623	#if EV_PERIODIC_ENABLE
1242	periodics_reschedule (EV_A);	1624	periodics_reschedule (EV_A);
1243	#endif	1625	#endif
1244
1245	/* 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 */
1246	for (i = 0; i < timercnt; ++i)	1627	for (i = 1; i <= timercnt; ++i)
1247	((WT)timers [i])->at += ev_rt_now - mn_now;	1628	ev_at (timers [i]) += ev_rt_now - mn_now;
1248	}	1629	}
1249		1630
1250	mn_now = ev_rt_now;	1631	mn_now = ev_rt_now;
1251	}	1632	}
1252	}	1633	}
…		…
1266	static int loop_done;	1647	static int loop_done;
1267		1648
1268	void	1649	void
1269	ev_loop (EV_P_ int flags)	1650	ev_loop (EV_P_ int flags)
1270	{	1651	{
1271	loop_done = flags & (EVLOOP_ONESHOT | EVLOOP_NONBLOCK)	1652	loop_done = EVUNLOOP_CANCEL;
1272	? EVUNLOOP_ONE
1273	: EVUNLOOP_CANCEL;
1274		1653
1275	while (activecnt)	1654	call_pending (EV_A); /* in case we recurse, ensure ordering stays nice and clean */
		1655
		1656	do
1276	{	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
1277	/* queue check watchers (and execute them) */	1677	/* queue prepare watchers (and execute them) */
1278	if (expect_false (preparecnt))	1678	if (expect_false (preparecnt))
1279	{	1679	{
1280	queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE);	1680	queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE);
1281	call_pending (EV_A);	1681	call_pending (EV_A);
1282	}	1682	}
1283		1683
		1684	if (expect_false (!activecnt))
		1685	break;
		1686
1284	/* we might have forked, so reify kernel state if necessary */	1687	/* we might have forked, so reify kernel state if necessary */
1285	if (expect_false (postfork))	1688	if (expect_false (postfork))
1286	loop_fork (EV_A);	1689	loop_fork (EV_A);
1287		1690
1288	/* update fd-related kernel structures */	1691	/* update fd-related kernel structures */
1289	fd_reify (EV_A);	1692	fd_reify (EV_A);
1290		1693
1291	/* calculate blocking time */	1694	/* calculate blocking time */
1292	{	1695	{
1293	double block;	1696	ev_tstamp waittime = 0.;
		1697	ev_tstamp sleeptime = 0.;
1294		1698
1295	if (flags & EVLOOP_NONBLOCK || idlecnt)	1699	if (expect_true (!(flags & EVLOOP_NONBLOCK || idleall || !activecnt)))
1296	block = 0.; /* do not block at all */
1297	else
1298	{	1700	{
1299	/* update time to cancel out callback processing overhead */	1701	/* update time to cancel out callback processing overhead */
1300	#if EV_USE_MONOTONIC
1301	if (expect_true (have_monotonic))
1302	time_update_monotonic (EV_A);	1702	time_update (EV_A_ 1e100);
1303	else
1304	#endif
1305	{
1306	ev_rt_now = ev_time ();
1307	mn_now = ev_rt_now;
1308	}
1309		1703
1310	block = MAX_BLOCKTIME;	1704	waittime = MAX_BLOCKTIME;
1311		1705
1312	if (timercnt)	1706	if (timercnt)
1313	{	1707	{
1314	ev_tstamp to = ((WT)timers [0])->at - mn_now + backend_fudge;	1708	ev_tstamp to = ev_at (timers [1]) - mn_now + backend_fudge;
1315	if (block > to) block = to;	1709	if (waittime > to) waittime = to;
1316	}	1710	}
1317		1711
1318	#if EV_PERIODIC_ENABLE	1712	#if EV_PERIODIC_ENABLE
1319	if (periodiccnt)	1713	if (periodiccnt)
1320	{	1714	{
1321	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;
1322	if (block > to) block = to;	1716	if (waittime > to) waittime = to;
1323	}	1717	}
1324	#endif	1718	#endif
1325		1719
1326	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	}
1327	}	1733	}
1328		1734
		1735	++loop_count;
1329	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);
1330	}	1740	}
1331
1332	/* update ev_rt_now, do magic */
1333	time_update (EV_A);
1334		1741
1335	/* queue pending timers and reschedule them */	1742	/* queue pending timers and reschedule them */
1336	timers_reify (EV_A); /* relative timers called last */	1743	timers_reify (EV_A); /* relative timers called last */
1337	#if EV_PERIODIC_ENABLE	1744	#if EV_PERIODIC_ENABLE
1338	periodics_reify (EV_A); /* absolute timers called first */	1745	periodics_reify (EV_A); /* absolute timers called first */
1339	#endif	1746	#endif
1340		1747
		1748	#if EV_IDLE_ENABLE
1341	/* queue idle watchers unless other events are pending */	1749	/* queue idle watchers unless other events are pending */
1342	if (idlecnt && !any_pending (EV_A))	1750	idle_reify (EV_A);
1343	queue_events (EV_A_ (W *)idles, idlecnt, EV_IDLE);	1751	#endif
1344		1752
1345	/* queue check watchers, to be executed first */	1753	/* queue check watchers, to be executed first */
1346	if (expect_false (checkcnt))	1754	if (expect_false (checkcnt))
1347	queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK);	1755	queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK);
1348		1756
1349	call_pending (EV_A);	1757	call_pending (EV_A);
1350
1351	if (expect_false (loop_done))
1352	break;
1353	}	1758	}
		1759	while (expect_true (
		1760	activecnt
		1761	&& !loop_done
		1762	&& !(flags & (EVLOOP_ONESHOT | EVLOOP_NONBLOCK))
		1763	));
1354		1764
1355	if (loop_done == EVUNLOOP_ONE)	1765	if (loop_done == EVUNLOOP_ONE)
1356	loop_done = EVUNLOOP_CANCEL;	1766	loop_done = EVUNLOOP_CANCEL;
1357	}	1767	}
1358		1768
…		…
1385	head = &(*head)->next;	1795	head = &(*head)->next;
1386	}	1796	}
1387	}	1797	}
1388		1798
1389	void inline_speed	1799	void inline_speed
1390	ev_clear_pending (EV_P_ W w)	1800	clear_pending (EV_P_ W w)
1391	{	1801	{
1392	if (w->pending)	1802	if (w->pending)
1393	{	1803	{
1394	pendings [ABSPRI (w)][w->pending - 1].w = 0;	1804	pendings [ABSPRI (w)][w->pending - 1].w = 0;
1395	w->pending = 0;	1805	w->pending = 0;
1396	}	1806	}
1397	}	1807	}
1398		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
1399	void inline_speed	1835	void inline_speed
1400	ev_start (EV_P_ W w, int active)	1836	ev_start (EV_P_ W w, int active)
1401	{	1837	{
1402	if (w->priority < EV_MINPRI) w->priority = EV_MINPRI;	1838	pri_adjust (EV_A_ w);
1403	if (w->priority > EV_MAXPRI) w->priority = EV_MAXPRI;
1404
1405	w->active = active;	1839	w->active = active;
1406	ev_ref (EV_A);	1840	ev_ref (EV_A);
1407	}	1841	}
1408		1842
1409	void inline_size	1843	void inline_size
…		…
1413	w->active = 0;	1847	w->active = 0;
1414	}	1848	}
1415		1849
1416	/*****************************************************************************/	1850	/*****************************************************************************/
1417		1851
1418	void	1852	void noinline
1419	ev_io_start (EV_P_ ev_io *w)	1853	ev_io_start (EV_P_ ev_io *w)
1420	{	1854	{
1421	int fd = w->fd;	1855	int fd = w->fd;
1422		1856
1423	if (expect_false (ev_is_active (w)))	1857	if (expect_false (ev_is_active (w)))
…		…
1425		1859
1426	assert (("ev_io_start called with negative fd", fd >= 0));	1860	assert (("ev_io_start called with negative fd", fd >= 0));
1427		1861
1428	ev_start (EV_A_ (W)w, 1);	1862	ev_start (EV_A_ (W)w, 1);
1429	array_needsize (ANFD, anfds, anfdmax, fd + 1, anfds_init);	1863	array_needsize (ANFD, anfds, anfdmax, fd + 1, anfds_init);
1430	wlist_add ((WL *)&anfds[fd].head, (WL)w);	1864	wlist_add (&anfds[fd].head, (WL)w);
1431		1865
1432	fd_change (EV_A_ fd);	1866	fd_change (EV_A_ fd, w->events & EV_IOFDSET | 1);
		1867	w->events &= ~EV_IOFDSET;
1433	}	1868	}
1434		1869
1435	void	1870	void noinline
1436	ev_io_stop (EV_P_ ev_io *w)	1871	ev_io_stop (EV_P_ ev_io *w)
1437	{	1872	{
1438	ev_clear_pending (EV_A_ (W)w);	1873	clear_pending (EV_A_ (W)w);
1439	if (expect_false (!ev_is_active (w)))	1874	if (expect_false (!ev_is_active (w)))
1440	return;	1875	return;
1441		1876
1442	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));
1443		1878
1444	wlist_del ((WL *)&anfds[w->fd].head, (WL)w);	1879	wlist_del (&anfds[w->fd].head, (WL)w);
1445	ev_stop (EV_A_ (W)w);	1880	ev_stop (EV_A_ (W)w);
1446		1881
1447	fd_change (EV_A_ w->fd);	1882	fd_change (EV_A_ w->fd, 1);
1448	}	1883	}
1449		1884
1450	void	1885	void noinline
1451	ev_timer_start (EV_P_ ev_timer *w)	1886	ev_timer_start (EV_P_ ev_timer *w)
1452	{	1887	{
1453	if (expect_false (ev_is_active (w)))	1888	if (expect_false (ev_is_active (w)))
1454	return;	1889	return;
1455		1890
1456	((WT)w)->at += mn_now;	1891	ev_at (w) += mn_now;
1457		1892
1458	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.));
1459		1894
1460	ev_start (EV_A_ (W)w, ++timercnt);	1895	ev_start (EV_A_ (W)w, ++timercnt);
1461	array_needsize (ev_timer *, timers, timermax, timercnt, EMPTY2);	1896	array_needsize (WT, timers, timermax, timercnt + 1, EMPTY2);
1462	timers [timercnt - 1] = w;	1897	timers [timercnt] = (WT)w;
1463	upheap ((WT *)timers, timercnt - 1);	1898	upheap (timers, timercnt);
1464		1899
1465	assert (("internal timer heap corruption", timers [((W)w)->active - 1] == w));	1900	/*assert (("internal timer heap corruption", timers [ev_active (w)] == w));*/
1466	}	1901	}
1467		1902
1468	void	1903	void noinline
1469	ev_timer_stop (EV_P_ ev_timer *w)	1904	ev_timer_stop (EV_P_ ev_timer *w)
1470	{	1905	{
1471	ev_clear_pending (EV_A_ (W)w);	1906	clear_pending (EV_A_ (W)w);
1472	if (expect_false (!ev_is_active (w)))	1907	if (expect_false (!ev_is_active (w)))
1473	return;	1908	return;
1474		1909
		1910	{
		1911	int active = ev_active (w);
		1912
1475	assert (("internal timer heap corruption", timers [((W)w)->active - 1] == w));	1913	assert (("internal timer heap corruption", timers [active] == (WT)w));
1476		1914
1477	if (expect_true (((W)w)->active < timercnt--))	1915	if (expect_true (active < timercnt))
1478	{	1916	{
1479	timers [((W)w)->active - 1] = timers [timercnt];	1917	timers [active] = timers [timercnt];
1480	adjustheap ((WT *)timers, timercnt, ((W)w)->active - 1);	1918	adjustheap (timers, timercnt, active);
1481	}	1919	}
1482		1920
1483	((WT)w)->at -= mn_now;	1921	--timercnt;
		1922	}
		1923
		1924	ev_at (w) -= mn_now;
1484		1925
1485	ev_stop (EV_A_ (W)w);	1926	ev_stop (EV_A_ (W)w);
1486	}	1927	}
1487		1928
1488	void	1929	void noinline
1489	ev_timer_again (EV_P_ ev_timer *w)	1930	ev_timer_again (EV_P_ ev_timer *w)
1490	{	1931	{
1491	if (ev_is_active (w))	1932	if (ev_is_active (w))
1492	{	1933	{
1493	if (w->repeat)	1934	if (w->repeat)
1494	{	1935	{
1495	((WT)w)->at = mn_now + w->repeat;	1936	ev_at (w) = mn_now + w->repeat;
1496	adjustheap ((WT *)timers, timercnt, ((W)w)->active - 1);	1937	adjustheap (timers, timercnt, ev_active (w));
1497	}	1938	}
1498	else	1939	else
1499	ev_timer_stop (EV_A_ w);	1940	ev_timer_stop (EV_A_ w);
1500	}	1941	}
1501	else if (w->repeat)	1942	else if (w->repeat)
1502	{	1943	{
1503	w->at = w->repeat;	1944	ev_at (w) = w->repeat;
1504	ev_timer_start (EV_A_ w);	1945	ev_timer_start (EV_A_ w);
1505	}	1946	}
1506	}	1947	}
1507		1948
1508	#if EV_PERIODIC_ENABLE	1949	#if EV_PERIODIC_ENABLE
1509	void	1950	void noinline
1510	ev_periodic_start (EV_P_ ev_periodic *w)	1951	ev_periodic_start (EV_P_ ev_periodic *w)
1511	{	1952	{
1512	if (expect_false (ev_is_active (w)))	1953	if (expect_false (ev_is_active (w)))
1513	return;	1954	return;
1514		1955
1515	if (w->reschedule_cb)	1956	if (w->reschedule_cb)
1516	((WT)w)->at = w->reschedule_cb (w, ev_rt_now);	1957	ev_at (w) = w->reschedule_cb (w, ev_rt_now);
1517	else if (w->interval)	1958	else if (w->interval)
1518	{	1959	{
1519	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.));
1520	/* 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 */
1521	((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;
1522	}	1963	}
		1964	else
		1965	ev_at (w) = w->offset;
1523		1966
1524	ev_start (EV_A_ (W)w, ++periodiccnt);	1967	ev_start (EV_A_ (W)w, ++periodiccnt);
1525	array_needsize (ev_periodic *, periodics, periodicmax, periodiccnt, EMPTY2);	1968	array_needsize (WT, periodics, periodicmax, periodiccnt + 1, EMPTY2);
1526	periodics [periodiccnt - 1] = w;	1969	periodics [periodiccnt] = (WT)w;
1527	upheap ((WT *)periodics, periodiccnt - 1);	1970	upheap (periodics, periodiccnt);
1528		1971
1529	assert (("internal periodic heap corruption", periodics [((W)w)->active - 1] == w));	1972	/*assert (("internal periodic heap corruption", periodics [ev_active (w)] == w));*/
1530	}	1973	}
1531		1974
1532	void	1975	void noinline
1533	ev_periodic_stop (EV_P_ ev_periodic *w)	1976	ev_periodic_stop (EV_P_ ev_periodic *w)
1534	{	1977	{
1535	ev_clear_pending (EV_A_ (W)w);	1978	clear_pending (EV_A_ (W)w);
1536	if (expect_false (!ev_is_active (w)))	1979	if (expect_false (!ev_is_active (w)))
1537	return;	1980	return;
1538		1981
		1982	{
		1983	int active = ev_active (w);
		1984
1539	assert (("internal periodic heap corruption", periodics [((W)w)->active - 1] == w));	1985	assert (("internal periodic heap corruption", periodics [active] == (WT)w));
1540		1986
1541	if (expect_true (((W)w)->active < periodiccnt--))	1987	if (expect_true (active < periodiccnt))
1542	{	1988	{
1543	periodics [((W)w)->active - 1] = periodics [periodiccnt];	1989	periodics [active] = periodics [periodiccnt];
1544	adjustheap ((WT *)periodics, periodiccnt, ((W)w)->active - 1);	1990	adjustheap (periodics, periodiccnt, active);
1545	}	1991	}
		1992
		1993	--periodiccnt;
		1994	}
1546		1995
1547	ev_stop (EV_A_ (W)w);	1996	ev_stop (EV_A_ (W)w);
1548	}	1997	}
1549		1998
1550	void	1999	void noinline
1551	ev_periodic_again (EV_P_ ev_periodic *w)	2000	ev_periodic_again (EV_P_ ev_periodic *w)
1552	{	2001	{
1553	/* TODO: use adjustheap and recalculation */	2002	/* TODO: use adjustheap and recalculation */
1554	ev_periodic_stop (EV_A_ w);	2003	ev_periodic_stop (EV_A_ w);
1555	ev_periodic_start (EV_A_ w);	2004	ev_periodic_start (EV_A_ w);
1556	}	2005	}
1557	#endif	2006	#endif
1558		2007
1559	void
1560	ev_idle_start (EV_P_ ev_idle *w)
1561	{
1562	if (expect_false (ev_is_active (w)))
1563	return;
1564
1565	ev_start (EV_A_ (W)w, ++idlecnt);
1566	array_needsize (ev_idle *, idles, idlemax, idlecnt, EMPTY2);
1567	idles [idlecnt - 1] = w;
1568	}
1569
1570	void
1571	ev_idle_stop (EV_P_ ev_idle *w)
1572	{
1573	ev_clear_pending (EV_A_ (W)w);
1574	if (expect_false (!ev_is_active (w)))
1575	return;
1576
1577	{
1578	int active = ((W)w)->active;
1579	idles [active - 1] = idles [--idlecnt];
1580	((W)idles [active - 1])->active = active;
1581	}
1582
1583	ev_stop (EV_A_ (W)w);
1584	}
1585
1586	void
1587	ev_prepare_start (EV_P_ ev_prepare *w)
1588	{
1589	if (expect_false (ev_is_active (w)))
1590	return;
1591
1592	ev_start (EV_A_ (W)w, ++preparecnt);
1593	array_needsize (ev_prepare *, prepares, preparemax, preparecnt, EMPTY2);
1594	prepares [preparecnt - 1] = w;
1595	}
1596
1597	void
1598	ev_prepare_stop (EV_P_ ev_prepare *w)
1599	{
1600	ev_clear_pending (EV_A_ (W)w);
1601	if (expect_false (!ev_is_active (w)))
1602	return;
1603
1604	{
1605	int active = ((W)w)->active;
1606	prepares [active - 1] = prepares [--preparecnt];
1607	((W)prepares [active - 1])->active = active;
1608	}
1609
1610	ev_stop (EV_A_ (W)w);
1611	}
1612
1613	void
1614	ev_check_start (EV_P_ ev_check *w)
1615	{
1616	if (expect_false (ev_is_active (w)))
1617	return;
1618
1619	ev_start (EV_A_ (W)w, ++checkcnt);
1620	array_needsize (ev_check *, checks, checkmax, checkcnt, EMPTY2);
1621	checks [checkcnt - 1] = w;
1622	}
1623
1624	void
1625	ev_check_stop (EV_P_ ev_check *w)
1626	{
1627	ev_clear_pending (EV_A_ (W)w);
1628	if (expect_false (!ev_is_active (w)))
1629	return;
1630
1631	{
1632	int active = ((W)w)->active;
1633	checks [active - 1] = checks [--checkcnt];
1634	((W)checks [active - 1])->active = active;
1635	}
1636
1637	ev_stop (EV_A_ (W)w);
1638	}
1639
1640	#ifndef SA_RESTART	2008	#ifndef SA_RESTART
1641	# define SA_RESTART 0	2009	# define SA_RESTART 0
1642	#endif	2010	#endif
1643		2011
1644	void	2012	void noinline
1645	ev_signal_start (EV_P_ ev_signal *w)	2013	ev_signal_start (EV_P_ ev_signal *w)
1646	{	2014	{
1647	#if EV_MULTIPLICITY	2015	#if EV_MULTIPLICITY
1648	assert (("signal watchers are only supported in the default loop", loop == ev_default_loop_ptr));	2016	assert (("signal watchers are only supported in the default loop", loop == ev_default_loop_ptr));
1649	#endif	2017	#endif
1650	if (expect_false (ev_is_active (w)))	2018	if (expect_false (ev_is_active (w)))
1651	return;	2019	return;
1652		2020
1653	assert (("ev_signal_start called with illegal signal number", w->signum > 0));	2021	assert (("ev_signal_start called with illegal signal number", w->signum > 0));
1654		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
1655	ev_start (EV_A_ (W)w, 1);	2039	ev_start (EV_A_ (W)w, 1);
1656	array_needsize (ANSIG, signals, signalmax, w->signum, signals_init);
1657	wlist_add ((WL *)&signals [w->signum - 1].head, (WL)w);	2040	wlist_add (&signals [w->signum - 1].head, (WL)w);
1658		2041
1659	if (!((WL)w)->next)	2042	if (!((WL)w)->next)
1660	{	2043	{
1661	#if _WIN32	2044	#if _WIN32
1662	signal (w->signum, sighandler);	2045	signal (w->signum, ev_sighandler);
1663	#else	2046	#else
1664	struct sigaction sa;	2047	struct sigaction sa;
1665	sa.sa_handler = sighandler;	2048	sa.sa_handler = ev_sighandler;
1666	sigfillset (&sa.sa_mask);	2049	sigfillset (&sa.sa_mask);
1667	sa.sa_flags = SA_RESTART; /* if restarting works we save one iteration */	2050	sa.sa_flags = SA_RESTART; /* if restarting works we save one iteration */
1668	sigaction (w->signum, &sa, 0);	2051	sigaction (w->signum, &sa, 0);
1669	#endif	2052	#endif
1670	}	2053	}
1671	}	2054	}
1672		2055
1673	void	2056	void noinline
1674	ev_signal_stop (EV_P_ ev_signal *w)	2057	ev_signal_stop (EV_P_ ev_signal *w)
1675	{	2058	{
1676	ev_clear_pending (EV_A_ (W)w);	2059	clear_pending (EV_A_ (W)w);
1677	if (expect_false (!ev_is_active (w)))	2060	if (expect_false (!ev_is_active (w)))
1678	return;	2061	return;
1679		2062
1680	wlist_del ((WL *)&signals [w->signum - 1].head, (WL)w);	2063	wlist_del (&signals [w->signum - 1].head, (WL)w);
1681	ev_stop (EV_A_ (W)w);	2064	ev_stop (EV_A_ (W)w);
1682		2065
1683	if (!signals [w->signum - 1].head)	2066	if (!signals [w->signum - 1].head)
1684	signal (w->signum, SIG_DFL);	2067	signal (w->signum, SIG_DFL);
1685	}	2068	}
…		…
1692	#endif	2075	#endif
1693	if (expect_false (ev_is_active (w)))	2076	if (expect_false (ev_is_active (w)))
1694	return;	2077	return;
1695		2078
1696	ev_start (EV_A_ (W)w, 1);	2079	ev_start (EV_A_ (W)w, 1);
1697	wlist_add ((WL *)&childs [w->pid & (PID_HASHSIZE - 1)], (WL)w);	2080	wlist_add (&childs [w->pid & (EV_PID_HASHSIZE - 1)], (WL)w);
1698	}	2081	}
1699		2082
1700	void	2083	void
1701	ev_child_stop (EV_P_ ev_child *w)	2084	ev_child_stop (EV_P_ ev_child *w)
1702	{	2085	{
1703	ev_clear_pending (EV_A_ (W)w);	2086	clear_pending (EV_A_ (W)w);
1704	if (expect_false (!ev_is_active (w)))	2087	if (expect_false (!ev_is_active (w)))
1705	return;	2088	return;
1706		2089
1707	wlist_del ((WL *)&childs [w->pid & (PID_HASHSIZE - 1)], (WL)w);	2090	wlist_del (&childs [w->pid & (EV_PID_HASHSIZE - 1)], (WL)w);
1708	ev_stop (EV_A_ (W)w);	2091	ev_stop (EV_A_ (W)w);
1709	}	2092	}
1710		2093
1711	#if EV_EMBED_ENABLE	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
1712	void noinline	2109	static void noinline
1713	ev_embed_sweep (EV_P_ ev_embed *w)	2110	infy_add (EV_P_ ev_stat *w)
1714	{	2111	{
1715	ev_loop (w->loop, EVLOOP_NONBLOCK);	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	}
1716	}	2192	}
1717		2193
1718	static void	2194	static void
1719	embed_cb (EV_P_ ev_io *io, int revents)	2195	infy_cb (EV_P_ ev_io *w, int revents)
1720	{	2196	{
1721	ev_embed *w = (ev_embed *)(((char *)io) - offsetof (ev_embed, io));	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));
1722		2201
1723	if (ev_cb (w))	2202	for (ofs = 0; ofs < len; ofs += sizeof (struct inotify_event) + ev->len)
1724	ev_feed_event (EV_A_ (W)w, EV_EMBED);	2203	infy_wd (EV_A_ ev->wd, ev->wd, ev);
1725	else
1726	ev_embed_sweep (loop, w);
1727	}	2204	}
1728		2205
1729	void	2206	void inline_size
1730	ev_embed_start (EV_P_ ev_embed *w)	2207	infy_init (EV_P)
1731	{	2208	{
1732	if (expect_false (ev_is_active (w)))	2209	if (fs_fd != -2)
1733	return;	2210	return;
1734		2211
		2212	fs_fd = inotify_init ();
		2213
		2214	if (fs_fd >= 0)
1735	{	2215	{
1736	struct ev_loop *loop = w->loop;	2216	ev_io_init (&fs_w, infy_cb, fs_fd, EV_READ);
1737	assert (("loop to be embedded is not embeddable", backend & ev_embeddable_backends ()));	2217	ev_set_priority (&fs_w, EV_MAXPRI);
1738	ev_io_init (&w->io, embed_cb, backend_fd, EV_READ);
1739	}
1740
1741	ev_set_priority (&w->io, ev_priority (w));
1742	ev_io_start (EV_A_ &w->io);	2218	ev_io_start (EV_A_ &fs_w);
1743		2219	}
1744	ev_start (EV_A_ (W)w, 1);
1745	}	2220	}
1746		2221
1747	void	2222	void inline_size
1748	ev_embed_stop (EV_P_ ev_embed *w)	2223	infy_fork (EV_P)
1749	{	2224	{
1750	ev_clear_pending (EV_A_ (W)w);	2225	int slot;
1751	if (expect_false (!ev_is_active (w)))
1752	return;
1753		2226
1754	ev_io_stop (EV_A_ &w->io);	2227	if (fs_fd < 0)
		2228	return;
1755		2229
1756	ev_stop (EV_A_ (W)w);	2230	close (fs_fd);
1757	}	2231	fs_fd = inotify_init ();
1758	#endif
1759		2232
1760	#if EV_STAT_ENABLE	2233	for (slot = 0; slot < EV_INOTIFY_HASHSIZE; ++slot)
		2234	{
		2235	WL w_ = fs_hash [slot].head;
		2236	fs_hash [slot].head = 0;
1761		2237
1762	# ifdef _WIN32	2238	while (w_)
1763	# define lstat(a,b) stat(a,b)	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
1764	# endif	2254	#endif
1765		2255
1766	void	2256	void
1767	ev_stat_stat (EV_P_ ev_stat *w)	2257	ev_stat_stat (EV_P_ ev_stat *w)
1768	{	2258	{
1769	if (lstat (w->path, &w->attr) < 0)	2259	if (lstat (w->path, &w->attr) < 0)
1770	w->attr.st_nlink = 0;	2260	w->attr.st_nlink = 0;
1771	else if (!w->attr.st_nlink)	2261	else if (!w->attr.st_nlink)
1772	w->attr.st_nlink = 1;	2262	w->attr.st_nlink = 1;
1773	}	2263	}
1774		2264
1775	static void	2265	static void noinline
1776	stat_timer_cb (EV_P_ ev_timer *w_, int revents)	2266	stat_timer_cb (EV_P_ ev_timer *w_, int revents)
1777	{	2267	{
1778	ev_stat *w = (ev_stat *)(((char *)w_) - offsetof (ev_stat, timer));	2268	ev_stat *w = (ev_stat *)(((char *)w_) - offsetof (ev_stat, timer));
1779		2269
1780	/* we copy this here each the time so that */	2270	/* we copy this here each the time so that */
1781	/* prev has the old value when the callback gets invoked */	2271	/* prev has the old value when the callback gets invoked */
1782	w->prev = w->attr;	2272	w->prev = w->attr;
1783	ev_stat_stat (EV_A_ w);	2273	ev_stat_stat (EV_A_ w);
1784		2274
1785	if (memcmp (&w->prev, &w->attr, sizeof (ev_statdata)))	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
1786	ev_feed_event (EV_A_ w, EV_STAT);	2295	ev_feed_event (EV_A_ w, EV_STAT);
		2296	}
1787	}	2297	}
1788		2298
1789	void	2299	void
1790	ev_stat_start (EV_P_ ev_stat *w)	2300	ev_stat_start (EV_P_ ev_stat *w)
1791	{	2301	{
…		…
1796	memset (&w->prev, 0, sizeof (ev_statdata));	2306	memset (&w->prev, 0, sizeof (ev_statdata));
1797	memset (&w->attr, 0, sizeof (ev_statdata));	2307	memset (&w->attr, 0, sizeof (ev_statdata));
1798		2308
1799	ev_stat_stat (EV_A_ w);	2309	ev_stat_stat (EV_A_ w);
1800		2310
		2311	if (w->interval < MIN_STAT_INTERVAL)
		2312	w->interval = w->interval ? MIN_STAT_INTERVAL : DEF_STAT_INTERVAL;
		2313
1801	ev_timer_init (&w->timer, stat_timer_cb, w->interval, w->interval);	2314	ev_timer_init (&w->timer, stat_timer_cb, w->interval, w->interval);
1802	ev_set_priority (&w->timer, ev_priority (w));	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
1803	ev_timer_start (EV_A_ &w->timer);	2324	ev_timer_start (EV_A_ &w->timer);
1804		2325
1805	ev_start (EV_A_ (W)w, 1);	2326	ev_start (EV_A_ (W)w, 1);
1806	}	2327	}
1807		2328
1808	void	2329	void
1809	ev_stat_stop (EV_P_ ev_stat *w)	2330	ev_stat_stop (EV_P_ ev_stat *w)
1810	{	2331	{
1811	ev_clear_pending (EV_A_ (W)w);	2332	clear_pending (EV_A_ (W)w);
1812	if (expect_false (!ev_is_active (w)))	2333	if (expect_false (!ev_is_active (w)))
1813	return;	2334	return;
1814		2335
		2336	#if EV_USE_INOTIFY
		2337	infy_del (EV_A_ w);
		2338	#endif
1815	ev_timer_stop (EV_A_ &w->timer);	2339	ev_timer_stop (EV_A_ &w->timer);
1816		2340
1817	ev_stop (EV_A_ (W)w);	2341	ev_stop (EV_A_ (W)w);
		2342	}
		2343	#endif
		2344
		2345	#if EV_IDLE_ENABLE
		2346	void
		2347	ev_idle_start (EV_P_ ev_idle *w)
		2348	{
		2349	if (expect_false (ev_is_active (w)))
		2350	return;
		2351
		2352	pri_adjust (EV_A_ (W)w);
		2353
		2354	{
		2355	int active = ++idlecnt [ABSPRI (w)];
		2356
		2357	++idleall;
		2358	ev_start (EV_A_ (W)w, active);
		2359
		2360	array_needsize (ev_idle *, idles [ABSPRI (w)], idlemax [ABSPRI (w)], active, EMPTY2);
		2361	idles [ABSPRI (w)][active - 1] = w;
		2362	}
		2363	}
		2364
		2365	void
		2366	ev_idle_stop (EV_P_ ev_idle *w)
		2367	{
		2368	clear_pending (EV_A_ (W)w);
		2369	if (expect_false (!ev_is_active (w)))
		2370	return;
		2371
		2372	{
		2373	int active = ev_active (w);
		2374
		2375	idles [ABSPRI (w)][active - 1] = idles [ABSPRI (w)][--idlecnt [ABSPRI (w)]];
		2376	ev_active (idles [ABSPRI (w)][active - 1]) = active;
		2377
		2378	ev_stop (EV_A_ (W)w);
		2379	--idleall;
		2380	}
		2381	}
		2382	#endif
		2383
		2384	void
		2385	ev_prepare_start (EV_P_ ev_prepare *w)
		2386	{
		2387	if (expect_false (ev_is_active (w)))
		2388	return;
		2389
		2390	ev_start (EV_A_ (W)w, ++preparecnt);
		2391	array_needsize (ev_prepare *, prepares, preparemax, preparecnt, EMPTY2);
		2392	prepares [preparecnt - 1] = w;
		2393	}
		2394
		2395	void
		2396	ev_prepare_stop (EV_P_ ev_prepare *w)
		2397	{
		2398	clear_pending (EV_A_ (W)w);
		2399	if (expect_false (!ev_is_active (w)))
		2400	return;
		2401
		2402	{
		2403	int active = ev_active (w);
		2404
		2405	prepares [active - 1] = prepares [--preparecnt];
		2406	ev_active (prepares [active - 1]) = active;
		2407	}
		2408
		2409	ev_stop (EV_A_ (W)w);
		2410	}
		2411
		2412	void
		2413	ev_check_start (EV_P_ ev_check *w)
		2414	{
		2415	if (expect_false (ev_is_active (w)))
		2416	return;
		2417
		2418	ev_start (EV_A_ (W)w, ++checkcnt);
		2419	array_needsize (ev_check *, checks, checkmax, checkcnt, EMPTY2);
		2420	checks [checkcnt - 1] = w;
		2421	}
		2422
		2423	void
		2424	ev_check_stop (EV_P_ ev_check *w)
		2425	{
		2426	clear_pending (EV_A_ (W)w);
		2427	if (expect_false (!ev_is_active (w)))
		2428	return;
		2429
		2430	{
		2431	int active = ev_active (w);
		2432
		2433	checks [active - 1] = checks [--checkcnt];
		2434	ev_active (checks [active - 1]) = active;
		2435	}
		2436
		2437	ev_stop (EV_A_ (W)w);
		2438	}
		2439
		2440	#if EV_EMBED_ENABLE
		2441	void noinline
		2442	ev_embed_sweep (EV_P_ ev_embed *w)
		2443	{
		2444	ev_loop (w->other, EVLOOP_NONBLOCK);
		2445	}
		2446
		2447	static void
		2448	embed_io_cb (EV_P_ ev_io *io, int revents)
		2449	{
		2450	ev_embed *w = (ev_embed *)(((char *)io) - offsetof (ev_embed, io));
		2451
		2452	if (ev_cb (w))
		2453	ev_feed_event (EV_A_ (W)w, EV_EMBED);
		2454	else
		2455	ev_loop (w->other, EVLOOP_NONBLOCK);
		2456	}
		2457
		2458	static void
		2459	embed_prepare_cb (EV_P_ ev_prepare *prepare, int revents)
		2460	{
		2461	ev_embed *w = (ev_embed *)(((char *)prepare) - offsetof (ev_embed, prepare));
		2462
		2463	{
		2464	struct ev_loop *loop = w->other;
		2465
		2466	while (fdchangecnt)
		2467	{
		2468	fd_reify (EV_A);
		2469	ev_loop (EV_A_ EVLOOP_NONBLOCK);
		2470	}
		2471	}
		2472	}
		2473
		2474	#if 0
		2475	static void
		2476	embed_idle_cb (EV_P_ ev_idle *idle, int revents)
		2477	{
		2478	ev_idle_stop (EV_A_ idle);
		2479	}
		2480	#endif
		2481
		2482	void
		2483	ev_embed_start (EV_P_ ev_embed *w)
		2484	{
		2485	if (expect_false (ev_is_active (w)))
		2486	return;
		2487
		2488	{
		2489	struct ev_loop *loop = w->other;
		2490	assert (("loop to be embedded is not embeddable", backend & ev_embeddable_backends ()));
		2491	ev_io_init (&w->io, embed_io_cb, backend_fd, EV_READ);
		2492	}
		2493
		2494	ev_set_priority (&w->io, ev_priority (w));
		2495	ev_io_start (EV_A_ &w->io);
		2496
		2497	ev_prepare_init (&w->prepare, embed_prepare_cb);
		2498	ev_set_priority (&w->prepare, EV_MINPRI);
		2499	ev_prepare_start (EV_A_ &w->prepare);
		2500
		2501	/*ev_idle_init (&w->idle, e,bed_idle_cb);*/
		2502
		2503	ev_start (EV_A_ (W)w, 1);
		2504	}
		2505
		2506	void
		2507	ev_embed_stop (EV_P_ ev_embed *w)
		2508	{
		2509	clear_pending (EV_A_ (W)w);
		2510	if (expect_false (!ev_is_active (w)))
		2511	return;
		2512
		2513	ev_io_stop (EV_A_ &w->io);
		2514	ev_prepare_stop (EV_A_ &w->prepare);
		2515
		2516	ev_stop (EV_A_ (W)w);
		2517	}
		2518	#endif
		2519
		2520	#if EV_FORK_ENABLE
		2521	void
		2522	ev_fork_start (EV_P_ ev_fork *w)
		2523	{
		2524	if (expect_false (ev_is_active (w)))
		2525	return;
		2526
		2527	ev_start (EV_A_ (W)w, ++forkcnt);
		2528	array_needsize (ev_fork *, forks, forkmax, forkcnt, EMPTY2);
		2529	forks [forkcnt - 1] = w;
		2530	}
		2531
		2532	void
		2533	ev_fork_stop (EV_P_ ev_fork *w)
		2534	{
		2535	clear_pending (EV_A_ (W)w);
		2536	if (expect_false (!ev_is_active (w)))
		2537	return;
		2538
		2539	{
		2540	int active = ev_active (w);
		2541
		2542	forks [active - 1] = forks [--forkcnt];
		2543	ev_active (forks [active - 1]) = active;
		2544	}
		2545
		2546	ev_stop (EV_A_ (W)w);
		2547	}
		2548	#endif
		2549
		2550	#if EV_ASYNC_ENABLE
		2551	void
		2552	ev_async_start (EV_P_ ev_async *w)
		2553	{
		2554	if (expect_false (ev_is_active (w)))
		2555	return;
		2556
		2557	evpipe_init (EV_A);
		2558
		2559	ev_start (EV_A_ (W)w, ++asynccnt);
		2560	array_needsize (ev_async *, asyncs, asyncmax, asynccnt, EMPTY2);
		2561	asyncs [asynccnt - 1] = w;
		2562	}
		2563
		2564	void
		2565	ev_async_stop (EV_P_ ev_async *w)
		2566	{
		2567	clear_pending (EV_A_ (W)w);
		2568	if (expect_false (!ev_is_active (w)))
		2569	return;
		2570
		2571	{
		2572	int active = ev_active (w);
		2573
		2574	asyncs [active - 1] = asyncs [--asynccnt];
		2575	ev_active (asyncs [active - 1]) = active;
		2576	}
		2577
		2578	ev_stop (EV_A_ (W)w);
		2579	}
		2580
		2581	void
		2582	ev_async_send (EV_P_ ev_async *w)
		2583	{
		2584	w->sent = 1;
		2585	evpipe_write (EV_A_ &gotasync);
1818	}	2586	}
1819	#endif	2587	#endif
1820		2588
1821	/*****************************************************************************/	2589	/*****************************************************************************/
1822		2590
…		…
1880	ev_timer_set (&once->to, timeout, 0.);	2648	ev_timer_set (&once->to, timeout, 0.);
1881	ev_timer_start (EV_A_ &once->to);	2649	ev_timer_start (EV_A_ &once->to);
1882	}	2650	}
1883	}	2651	}
1884		2652
		2653	#if EV_MULTIPLICITY
		2654	#include "ev_wrap.h"
		2655	#endif
		2656
1885	#ifdef __cplusplus	2657	#ifdef __cplusplus
1886	}	2658	}
1887	#endif	2659	#endif
1888		2660

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