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Comparing libev/ev.c (file contents):
Revision 1.143 by root, Tue Nov 27 07:27:10 2007 UTC vs.
Revision 1.220 by root, Sun Apr 6 09:53:17 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	int eventfd (unsigned int initval, int flags);
		274	#endif
		275
177	/**/	276	/**/
		277
		278	/*
		279	* This is used to avoid floating point rounding problems.
		280	* It is added to ev_rt_now when scheduling periodics
		281	* to ensure progress, time-wise, even when rounding
		282	* errors are against us.
		283	* This value is good at least till the year 4000.
		284	* Better solutions welcome.
		285	*/
		286	#define TIME_EPSILON 0.0001220703125 /* 1/8192 */
178		287
179	#define MIN_TIMEJUMP 1. /* minimum timejump that gets detected (if monotonic clock available) */	288	#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) */	289	#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 */	290	/*#define CLEANUP_INTERVAL (MAX_BLOCKTIME * 5.) /* how often to try to free memory and re-check fds, TODO */
183		291
184	#ifdef EV_H
185	# include EV_H
186	#else
187	# include "ev.h"
188	#endif
189
190	#if __GNUC__ >= 3	292	#if __GNUC__ >= 4
191	# define expect(expr,value) __builtin_expect ((expr),(value))	293	# 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))	294	# 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	295	#else
201	# define expect(expr,value) (expr)	296	# define expect(expr,value) (expr)
202	# define inline_speed static
203	# define inline_minimal static
204	# define noinline	297	# define noinline
		298	# if __STDC_VERSION__ < 199901L
		299	# define inline
		300	# endif
205	#endif	301	#endif
206		302
207	#define expect_false(expr) expect ((expr) != 0, 0)	303	#define expect_false(expr) expect ((expr) != 0, 0)
208	#define expect_true(expr) expect ((expr) != 0, 1)	304	#define expect_true(expr) expect ((expr) != 0, 1)
		305	#define inline_size static inline
		306
		307	#if EV_MINIMAL
		308	# define inline_speed static noinline
		309	#else
		310	# define inline_speed static inline
		311	#endif
209		312
210	#define NUMPRI (EV_MAXPRI - EV_MINPRI + 1)	313	#define NUMPRI (EV_MAXPRI - EV_MINPRI + 1)
211	#define ABSPRI(w) ((w)->priority - EV_MINPRI)	314	#define ABSPRI(w) (((W)w)->priority - EV_MINPRI)
212		315
213	#define EMPTY0 /* required for microsofts broken pseudo-c compiler */	316	#define EMPTY /* required for microsofts broken pseudo-c compiler */
214	#define EMPTY2(a,b) /* used to suppress some warnings */	317	#define EMPTY2(a,b) /* used to suppress some warnings */
215		318
216	typedef ev_watcher *W;	319	typedef ev_watcher *W;
217	typedef ev_watcher_list *WL;	320	typedef ev_watcher_list *WL;
218	typedef ev_watcher_time *WT;	321	typedef ev_watcher_time *WT;
219		322
		323	#if EV_USE_MONOTONIC
		324	/* sig_atomic_t is used to avoid per-thread variables or locking but still */
		325	/* giving it a reasonably high chance of working on typical architetcures */
220	static int have_monotonic; /* did clock_gettime (CLOCK_MONOTONIC) work? */	326	static EV_ATOMIC_T have_monotonic; /* did clock_gettime (CLOCK_MONOTONIC) work? */
		327	#endif
221		328
222	#ifdef _WIN32	329	#ifdef _WIN32
223	# include "ev_win32.c"	330	# include "ev_win32.c"
224	#endif	331	#endif
225		332
…		…
254	ev_set_allocator (void *(*cb)(void *ptr, long size))	361	ev_set_allocator (void *(*cb)(void *ptr, long size))
255	{	362	{
256	alloc = cb;	363	alloc = cb;
257	}	364	}
258		365
259	static void *	366	inline_speed void *
260	ev_realloc (void *ptr, long size)	367	ev_realloc (void *ptr, long size)
261	{	368	{
262	ptr = alloc ? alloc (ptr, size) : realloc (ptr, size);	369	ptr = alloc ? alloc (ptr, size) : realloc (ptr, size);
263		370
264	if (!ptr && size)	371	if (!ptr && size)
…		…
288	typedef struct	395	typedef struct
289	{	396	{
290	W w;	397	W w;
291	int events;	398	int events;
292	} ANPENDING;	399	} ANPENDING;
		400
		401	#if EV_USE_INOTIFY
		402	typedef struct
		403	{
		404	WL head;
		405	} ANFS;
		406	#endif
293		407
294	#if EV_MULTIPLICITY	408	#if EV_MULTIPLICITY
295		409
296	struct ev_loop	410	struct ev_loop
297	{	411	{
…		…
354	{	468	{
355	return ev_rt_now;	469	return ev_rt_now;
356	}	470	}
357	#endif	471	#endif
358		472
359	#define array_roundsize(type,n) (((n) | 4) & ~3)	473	void
		474	ev_sleep (ev_tstamp delay)
		475	{
		476	if (delay > 0.)
		477	{
		478	#if EV_USE_NANOSLEEP
		479	struct timespec ts;
		480
		481	ts.tv_sec = (time_t)delay;
		482	ts.tv_nsec = (long)((delay - (ev_tstamp)(ts.tv_sec)) * 1e9);
		483
		484	nanosleep (&ts, 0);
		485	#elif defined(_WIN32)
		486	Sleep ((unsigned long)(delay * 1e3));
		487	#else
		488	struct timeval tv;
		489
		490	tv.tv_sec = (time_t)delay;
		491	tv.tv_usec = (long)((delay - (ev_tstamp)(tv.tv_sec)) * 1e6);
		492
		493	select (0, 0, 0, 0, &tv);
		494	#endif
		495	}
		496	}
		497
		498	/*****************************************************************************/
		499
		500	int inline_size
		501	array_nextsize (int elem, int cur, int cnt)
		502	{
		503	int ncur = cur + 1;
		504
		505	do
		506	ncur <<= 1;
		507	while (cnt > ncur);
		508
		509	/* if size > 4096, round to 4096 - 4 * longs to accomodate malloc overhead */
		510	if (elem * ncur > 4096)
		511	{
		512	ncur *= elem;
		513	ncur = (ncur + elem + 4095 + sizeof (void *) * 4) & ~4095;
		514	ncur = ncur - sizeof (void *) * 4;
		515	ncur /= elem;
		516	}
		517
		518	return ncur;
		519	}
		520
		521	static noinline void *
		522	array_realloc (int elem, void *base, int *cur, int cnt)
		523	{
		524	*cur = array_nextsize (elem, *cur, cnt);
		525	return ev_realloc (base, elem * *cur);
		526	}
360		527
361	#define array_needsize(type,base,cur,cnt,init) \	528	#define array_needsize(type,base,cur,cnt,init) \
362	if (expect_false ((cnt) > cur)) \	529	if (expect_false ((cnt) > (cur))) \
363	{ \	530	{ \
364	int newcnt = cur; \	531	int ocur_ = (cur); \
365	do \	532	(base) = (type *)array_realloc \
366	{ \	533	(sizeof (type), (base), &(cur), (cnt)); \
367	newcnt = array_roundsize (type, newcnt << 1); \	534	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	}	535	}
375		536
		537	#if 0
376	#define array_slim(type,stem) \	538	#define array_slim(type,stem) \
377	if (stem ## max < array_roundsize (stem ## cnt >> 2)) \	539	if (stem ## max < array_roundsize (stem ## cnt >> 2)) \
378	{ \	540	{ \
379	stem ## max = array_roundsize (stem ## cnt >> 1); \	541	stem ## max = array_roundsize (stem ## cnt >> 1); \
380	base = (type *)ev_realloc (base, sizeof (type) * (stem ## max));\	542	base = (type *)ev_realloc (base, sizeof (type) * (stem ## max));\
381	fprintf (stderr, "slimmed down " # stem " to %d\n", stem ## max);/*D*/\	543	fprintf (stderr, "slimmed down " # stem " to %d\n", stem ## max);/*D*/\
382	}	544	}
		545	#endif
383		546
384	#define array_free(stem, idx) \	547	#define array_free(stem, idx) \
385	ev_free (stem ## s idx); stem ## cnt idx = stem ## max idx = 0;	548	ev_free (stem ## s idx); stem ## cnt idx = stem ## max idx = 0;
386		549
387	/*****************************************************************************/	550	/*****************************************************************************/
388		551
389	void noinline	552	void noinline
390	ev_feed_event (EV_P_ void *w, int revents)	553	ev_feed_event (EV_P_ void *w, int revents)
391	{	554	{
392	W w_ = (W)w;	555	W w_ = (W)w;
		556	int pri = ABSPRI (w_);
393		557
394	if (expect_false (w_->pending))	558	if (expect_false (w_->pending))
		559	pendings [pri][w_->pending - 1].events |= revents;
		560	else
395	{	561	{
		562	w_->pending = ++pendingcnt [pri];
		563	array_needsize (ANPENDING, pendings [pri], pendingmax [pri], w_->pending, EMPTY2);
		564	pendings [pri][w_->pending - 1].w = w_;
396	pendings [ABSPRI (w_)][w_->pending - 1].events |= revents;	565	pendings [pri][w_->pending - 1].events = revents;
397	return;
398	}	566	}
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	}	567	}
405		568
406	void inline_size	569	void inline_speed
407	queue_events (EV_P_ W *events, int eventcnt, int type)	570	queue_events (EV_P_ W *events, int eventcnt, int type)
408	{	571	{
409	int i;	572	int i;
410		573
411	for (i = 0; i < eventcnt; ++i)	574	for (i = 0; i < eventcnt; ++i)
…		…
443	}	606	}
444		607
445	void	608	void
446	ev_feed_fd_event (EV_P_ int fd, int revents)	609	ev_feed_fd_event (EV_P_ int fd, int revents)
447	{	610	{
		611	if (fd >= 0 && fd < anfdmax)
448	fd_event (EV_A_ fd, revents);	612	fd_event (EV_A_ fd, revents);
449	}	613	}
450		614
451	void inline_size	615	void inline_size
452	fd_reify (EV_P)	616	fd_reify (EV_P)
453	{	617	{
…		…
457	{	621	{
458	int fd = fdchanges [i];	622	int fd = fdchanges [i];
459	ANFD *anfd = anfds + fd;	623	ANFD *anfd = anfds + fd;
460	ev_io *w;	624	ev_io *w;
461		625
462	int events = 0;	626	unsigned char events = 0;
463		627
464	for (w = (ev_io *)anfd->head; w; w = (ev_io *)((WL)w)->next)	628	for (w = (ev_io *)anfd->head; w; w = (ev_io *)((WL)w)->next)
465	events |= w->events;	629	events |= (unsigned char)w->events;
466		630
467	#if EV_SELECT_IS_WINSOCKET	631	#if EV_SELECT_IS_WINSOCKET
468	if (events)	632	if (events)
469	{	633	{
470	unsigned long argp;	634	unsigned long argp;
		635	#ifdef EV_FD_TO_WIN32_HANDLE
		636	anfd->handle = EV_FD_TO_WIN32_HANDLE (fd);
		637	#else
471	anfd->handle = _get_osfhandle (fd);	638	anfd->handle = _get_osfhandle (fd);
		639	#endif
472	assert (("libev only supports socket fds in this configuration", ioctlsocket (anfd->handle, FIONREAD, &argp) == 0));	640	assert (("libev only supports socket fds in this configuration", ioctlsocket (anfd->handle, FIONREAD, &argp) == 0));
473	}	641	}
474	#endif	642	#endif
475		643
		644	{
		645	unsigned char o_events = anfd->events;
		646	unsigned char o_reify = anfd->reify;
		647
476	anfd->reify = 0;	648	anfd->reify = 0;
477
478	backend_modify (EV_A_ fd, anfd->events, events);
479	anfd->events = events;	649	anfd->events = events;
		650
		651	if (o_events != events || o_reify & EV_IOFDSET)
		652	backend_modify (EV_A_ fd, o_events, events);
		653	}
480	}	654	}
481		655
482	fdchangecnt = 0;	656	fdchangecnt = 0;
483	}	657	}
484		658
485	void inline_size	659	void inline_size
486	fd_change (EV_P_ int fd)	660	fd_change (EV_P_ int fd, int flags)
487	{	661	{
488	if (expect_false (anfds [fd].reify))	662	unsigned char reify = anfds [fd].reify;
489	return;
490
491	anfds [fd].reify = 1;	663	anfds [fd].reify |= flags;
492		664
		665	if (expect_true (!reify))
		666	{
493	++fdchangecnt;	667	++fdchangecnt;
494	array_needsize (int, fdchanges, fdchangemax, fdchangecnt, EMPTY2);	668	array_needsize (int, fdchanges, fdchangemax, fdchangecnt, EMPTY2);
495	fdchanges [fdchangecnt - 1] = fd;	669	fdchanges [fdchangecnt - 1] = fd;
		670	}
496	}	671	}
497		672
498	void inline_speed	673	void inline_speed
499	fd_kill (EV_P_ int fd)	674	fd_kill (EV_P_ int fd)
500	{	675	{
…		…
547	static void noinline	722	static void noinline
548	fd_rearm_all (EV_P)	723	fd_rearm_all (EV_P)
549	{	724	{
550	int fd;	725	int fd;
551		726
552	/* this should be highly optimised to not do anything but set a flag */
553	for (fd = 0; fd < anfdmax; ++fd)	727	for (fd = 0; fd < anfdmax; ++fd)
554	if (anfds [fd].events)	728	if (anfds [fd].events)
555	{	729	{
556	anfds [fd].events = 0;	730	anfds [fd].events = 0;
557	fd_change (EV_A_ fd);	731	fd_change (EV_A_ fd, EV_IOFDSET | 1);
558	}	732	}
559	}	733	}
560		734
561	/*****************************************************************************/	735	/*****************************************************************************/
562		736
563	void inline_speed	737	void inline_speed
564	upheap (WT *heap, int k)	738	upheap (WT *heap, int k)
565	{	739	{
566	WT w = heap [k];	740	WT w = heap [k];
567		741
568	while (k && heap [k >> 1]->at > w->at)	742	while (k)
569	{	743	{
		744	int p = (k - 1) >> 1;
		745
		746	if (heap [p]->at <= w->at)
		747	break;
		748
570	heap [k] = heap [k >> 1];	749	heap [k] = heap [p];
571	((W)heap [k])->active = k + 1;	750	((W)heap [k])->active = k + 1;
572	k >>= 1;	751	k = p;
573	}	752	}
574		753
575	heap [k] = w;	754	heap [k] = w;
576	((W)heap [k])->active = k + 1;	755	((W)heap [k])->active = k + 1;
577
578	}	756	}
579		757
580	void inline_speed	758	void inline_speed
581	downheap (WT *heap, int N, int k)	759	downheap (WT *heap, int N, int k)
582	{	760	{
583	WT w = heap [k];	761	WT w = heap [k];
584		762
585	while (k < (N >> 1))	763	for (;;)
586	{	764	{
587	int j = k << 1;	765	int c = (k << 1) + 1;
588		766
589	if (j + 1 < N && heap [j]->at > heap [j + 1]->at)	767	if (c >= N)
590	++j;
591
592	if (w->at <= heap [j]->at)
593	break;	768	break;
594		769
		770	c += c + 1 < N && heap [c]->at > heap [c + 1]->at
		771	? 1 : 0;
		772
		773	if (w->at <= heap [c]->at)
		774	break;
		775
595	heap [k] = heap [j];	776	heap [k] = heap [c];
596	((W)heap [k])->active = k + 1;	777	((W)heap [k])->active = k + 1;
		778
597	k = j;	779	k = c;
598	}	780	}
599		781
600	heap [k] = w;	782	heap [k] = w;
601	((W)heap [k])->active = k + 1;	783	((W)heap [k])->active = k + 1;
602	}	784	}
…		…
611	/*****************************************************************************/	793	/*****************************************************************************/
612		794
613	typedef struct	795	typedef struct
614	{	796	{
615	WL head;	797	WL head;
616	sig_atomic_t volatile gotsig;	798	EV_ATOMIC_T gotsig;
617	} ANSIG;	799	} ANSIG;
618		800
619	static ANSIG *signals;	801	static ANSIG *signals;
620	static int signalmax;	802	static int signalmax;
621		803
622	static int sigpipe [2];	804	static EV_ATOMIC_T gotsig;
623	static sig_atomic_t volatile gotsig;
624	static ev_io sigev;
625		805
626	void inline_size	806	void inline_size
627	signals_init (ANSIG *base, int count)	807	signals_init (ANSIG *base, int count)
628	{	808	{
629	while (count--)	809	while (count--)
…		…
633		813
634	++base;	814	++base;
635	}	815	}
636	}	816	}
637		817
638	static void	818	/*****************************************************************************/
639	sighandler (int signum)
640	{
641	#if _WIN32
642	signal (signum, sighandler);
643	#endif
644		819
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	820	void inline_speed
690	fd_intern (int fd)	821	fd_intern (int fd)
691	{	822	{
692	#ifdef _WIN32	823	#ifdef _WIN32
693	int arg = 1;	824	int arg = 1;
694	ioctlsocket (_get_osfhandle (fd), FIONBIO, &arg);	825	ioctlsocket (_get_osfhandle (fd), FIONBIO, &arg);
…		…
697	fcntl (fd, F_SETFL, O_NONBLOCK);	828	fcntl (fd, F_SETFL, O_NONBLOCK);
698	#endif	829	#endif
699	}	830	}
700		831
701	static void noinline	832	static void noinline
702	siginit (EV_P)	833	evpipe_init (EV_P)
703	{	834	{
		835	if (!ev_is_active (&pipeev))
		836	{
		837	#if EV_USE_EVENTFD
		838	if ((evfd = eventfd (0, 0)) >= 0)
		839	{
		840	evpipe [0] = -1;
		841	fd_intern (evfd);
		842	ev_io_set (&pipeev, evfd, EV_READ);
		843	}
		844	else
		845	#endif
		846	{
		847	while (pipe (evpipe))
		848	syserr ("(libev) error creating signal/async pipe");
		849
704	fd_intern (sigpipe [0]);	850	fd_intern (evpipe [0]);
705	fd_intern (sigpipe [1]);	851	fd_intern (evpipe [1]);
		852	ev_io_set (&pipeev, evpipe [0], EV_READ);
		853	}
706		854
707	ev_io_set (&sigev, sigpipe [0], EV_READ);
708	ev_io_start (EV_A_ &sigev);	855	ev_io_start (EV_A_ &pipeev);
709	ev_unref (EV_A); /* child watcher should not keep loop alive */	856	ev_unref (EV_A); /* watcher should not keep loop alive */
		857	}
		858	}
		859
		860	void inline_size
		861	evpipe_write (EV_P_ EV_ATOMIC_T *flag)
		862	{
		863	if (!*flag)
		864	{
		865	int old_errno = errno; /* save errno because write might clobber it */
		866
		867	*flag = 1;
		868
		869	#if EV_USE_EVENTFD
		870	if (evfd >= 0)
		871	{
		872	uint64_t counter = 1;
		873	write (evfd, &counter, sizeof (uint64_t));
		874	}
		875	else
		876	#endif
		877	write (evpipe [1], &old_errno, 1);
		878
		879	errno = old_errno;
		880	}
		881	}
		882
		883	static void
		884	pipecb (EV_P_ ev_io *iow, int revents)
		885	{
		886	#if EV_USE_EVENTFD
		887	if (evfd >= 0)
		888	{
		889	uint64_t counter = 1;
		890	read (evfd, &counter, sizeof (uint64_t));
		891	}
		892	else
		893	#endif
		894	{
		895	char dummy;
		896	read (evpipe [0], &dummy, 1);
		897	}
		898
		899	if (gotsig && ev_is_default_loop (EV_A))
		900	{
		901	int signum;
		902	gotsig = 0;
		903
		904	for (signum = signalmax; signum--; )
		905	if (signals [signum].gotsig)
		906	ev_feed_signal_event (EV_A_ signum + 1);
		907	}
		908
		909	#if EV_ASYNC_ENABLE
		910	if (gotasync)
		911	{
		912	int i;
		913	gotasync = 0;
		914
		915	for (i = asynccnt; i--; )
		916	if (asyncs [i]->sent)
		917	{
		918	asyncs [i]->sent = 0;
		919	ev_feed_event (EV_A_ asyncs [i], EV_ASYNC);
		920	}
		921	}
		922	#endif
710	}	923	}
711		924
712	/*****************************************************************************/	925	/*****************************************************************************/
713		926
		927	static void
		928	ev_sighandler (int signum)
		929	{
		930	#if EV_MULTIPLICITY
		931	struct ev_loop *loop = &default_loop_struct;
		932	#endif
		933
		934	#if _WIN32
		935	signal (signum, ev_sighandler);
		936	#endif
		937
		938	signals [signum - 1].gotsig = 1;
		939	evpipe_write (EV_A_ &gotsig);
		940	}
		941
		942	void noinline
		943	ev_feed_signal_event (EV_P_ int signum)
		944	{
		945	WL w;
		946
		947	#if EV_MULTIPLICITY
		948	assert (("feeding signal events is only supported in the default loop", loop == ev_default_loop_ptr));
		949	#endif
		950
		951	--signum;
		952
		953	if (signum < 0 || signum >= signalmax)
		954	return;
		955
		956	signals [signum].gotsig = 0;
		957
		958	for (w = signals [signum].head; w; w = w->next)
		959	ev_feed_event (EV_A_ (W)w, EV_SIGNAL);
		960	}
		961
		962	/*****************************************************************************/
		963
714	static ev_child *childs [PID_HASHSIZE];	964	static WL childs [EV_PID_HASHSIZE];
715		965
716	#ifndef _WIN32	966	#ifndef _WIN32
717		967
718	static ev_signal childev;	968	static ev_signal childev;
719		969
		970	#ifndef WIFCONTINUED
		971	# define WIFCONTINUED(status) 0
		972	#endif
		973
720	void inline_speed	974	void inline_speed
721	child_reap (EV_P_ ev_signal *sw, int chain, int pid, int status)	975	child_reap (EV_P_ int chain, int pid, int status)
722	{	976	{
723	ev_child *w;	977	ev_child *w;
		978	int traced = WIFSTOPPED (status) || WIFCONTINUED (status);
724		979
725	for (w = (ev_child *)childs [chain & (PID_HASHSIZE - 1)]; w; w = (ev_child *)((WL)w)->next)	980	for (w = (ev_child *)childs [chain & (EV_PID_HASHSIZE - 1)]; w; w = (ev_child *)((WL)w)->next)
		981	{
726	if (w->pid == pid || !w->pid)	982	if ((w->pid == pid || !w->pid)
		983	&& (!traced || (w->flags & 1)))
727	{	984	{
728	ev_priority (w) = ev_priority (sw); /* need to do it *now* */	985	ev_set_priority (w, EV_MAXPRI); /* need to do it *now*, this *must* be the same prio as the signal watcher itself */
729	w->rpid = pid;	986	w->rpid = pid;
730	w->rstatus = status;	987	w->rstatus = status;
731	ev_feed_event (EV_A_ (W)w, EV_CHILD);	988	ev_feed_event (EV_A_ (W)w, EV_CHILD);
732	}	989	}
		990	}
733	}	991	}
734		992
735	#ifndef WCONTINUED	993	#ifndef WCONTINUED
736	# define WCONTINUED 0	994	# define WCONTINUED 0
737	#endif	995	#endif
…		…
746	if (!WCONTINUED	1004	if (!WCONTINUED
747	|| errno != EINVAL	1005	|| errno != EINVAL
748	|| 0 >= (pid = waitpid (-1, &status, WNOHANG | WUNTRACED)))	1006	|| 0 >= (pid = waitpid (-1, &status, WNOHANG | WUNTRACED)))
749	return;	1007	return;
750		1008
751	/* make sure we are called again until all childs have been reaped */	1009	/* make sure we are called again until all children have been reaped */
752	/* we need to do it this way so that the callback gets called before we continue */	1010	/* we need to do it this way so that the callback gets called before we continue */
753	ev_feed_event (EV_A_ (W)sw, EV_SIGNAL);	1011	ev_feed_event (EV_A_ (W)sw, EV_SIGNAL);
754		1012
755	child_reap (EV_A_ sw, pid, pid, status);	1013	child_reap (EV_A_ pid, pid, status);
		1014	if (EV_PID_HASHSIZE > 1)
756	child_reap (EV_A_ sw, 0, pid, status); /* this might trigger a watcher twice, but feed_event catches that */	1015	child_reap (EV_A_ 0, pid, status); /* this might trigger a watcher twice, but feed_event catches that */
757	}	1016	}
758		1017
759	#endif	1018	#endif
760		1019
761	/*****************************************************************************/	1020	/*****************************************************************************/
…		…
833	}	1092	}
834		1093
835	unsigned int	1094	unsigned int
836	ev_embeddable_backends (void)	1095	ev_embeddable_backends (void)
837	{	1096	{
838	return EVBACKEND_EPOLL	1097	int flags = EVBACKEND_EPOLL | EVBACKEND_KQUEUE | EVBACKEND_PORT;
839	| EVBACKEND_KQUEUE	1098
840	| EVBACKEND_PORT;	1099	/* epoll embeddability broken on all linux versions up to at least 2.6.23 */
		1100	/* please fix it and tell me how to detect the fix */
		1101	flags &= ~EVBACKEND_EPOLL;
		1102
		1103	return flags;
841	}	1104	}
842		1105
843	unsigned int	1106	unsigned int
844	ev_backend (EV_P)	1107	ev_backend (EV_P)
845	{	1108	{
846	return backend;	1109	return backend;
847	}	1110	}
848		1111
849	static void	1112	unsigned int
		1113	ev_loop_count (EV_P)
		1114	{
		1115	return loop_count;
		1116	}
		1117
		1118	void
		1119	ev_set_io_collect_interval (EV_P_ ev_tstamp interval)
		1120	{
		1121	io_blocktime = interval;
		1122	}
		1123
		1124	void
		1125	ev_set_timeout_collect_interval (EV_P_ ev_tstamp interval)
		1126	{
		1127	timeout_blocktime = interval;
		1128	}
		1129
		1130	static void noinline
850	loop_init (EV_P_ unsigned int flags)	1131	loop_init (EV_P_ unsigned int flags)
851	{	1132	{
852	if (!backend)	1133	if (!backend)
853	{	1134	{
854	#if EV_USE_MONOTONIC	1135	#if EV_USE_MONOTONIC
…		…
857	if (!clock_gettime (CLOCK_MONOTONIC, &ts))	1138	if (!clock_gettime (CLOCK_MONOTONIC, &ts))
858	have_monotonic = 1;	1139	have_monotonic = 1;
859	}	1140	}
860	#endif	1141	#endif
861		1142
862	ev_rt_now = ev_time ();	1143	ev_rt_now = ev_time ();
863	mn_now = get_clock ();	1144	mn_now = get_clock ();
864	now_floor = mn_now;	1145	now_floor = mn_now;
865	rtmn_diff = ev_rt_now - mn_now;	1146	rtmn_diff = ev_rt_now - mn_now;
		1147
		1148	io_blocktime = 0.;
		1149	timeout_blocktime = 0.;
		1150	backend = 0;
		1151	backend_fd = -1;
		1152	gotasync = 0;
		1153	#if EV_USE_INOTIFY
		1154	fs_fd = -2;
		1155	#endif
		1156
		1157	/* pid check not overridable via env */
		1158	#ifndef _WIN32
		1159	if (flags & EVFLAG_FORKCHECK)
		1160	curpid = getpid ();
		1161	#endif
866		1162
867	if (!(flags & EVFLAG_NOENV)	1163	if (!(flags & EVFLAG_NOENV)
868	&& !enable_secure ()	1164	&& !enable_secure ()
869	&& getenv ("LIBEV_FLAGS"))	1165	&& getenv ("LIBEV_FLAGS"))
870	flags = atoi (getenv ("LIBEV_FLAGS"));	1166	flags = atoi (getenv ("LIBEV_FLAGS"));
871		1167
872	if (!(flags & 0x0000ffffUL))	1168	if (!(flags & 0x0000ffffUL))
873	flags |= ev_recommended_backends ();	1169	flags |= ev_recommended_backends ();
874		1170
875	backend = 0;
876	#if EV_USE_PORT	1171	#if EV_USE_PORT
877	if (!backend && (flags & EVBACKEND_PORT )) backend = port_init (EV_A_ flags);	1172	if (!backend && (flags & EVBACKEND_PORT )) backend = port_init (EV_A_ flags);
878	#endif	1173	#endif
879	#if EV_USE_KQUEUE	1174	#if EV_USE_KQUEUE
880	if (!backend && (flags & EVBACKEND_KQUEUE)) backend = kqueue_init (EV_A_ flags);	1175	if (!backend && (flags & EVBACKEND_KQUEUE)) backend = kqueue_init (EV_A_ flags);
…		…
887	#endif	1182	#endif
888	#if EV_USE_SELECT	1183	#if EV_USE_SELECT
889	if (!backend && (flags & EVBACKEND_SELECT)) backend = select_init (EV_A_ flags);	1184	if (!backend && (flags & EVBACKEND_SELECT)) backend = select_init (EV_A_ flags);
890	#endif	1185	#endif
891		1186
892	ev_init (&sigev, sigcb);	1187	ev_init (&pipeev, pipecb);
893	ev_set_priority (&sigev, EV_MAXPRI);	1188	ev_set_priority (&pipeev, EV_MAXPRI);
894	}	1189	}
895	}	1190	}
896		1191
897	static void	1192	static void noinline
898	loop_destroy (EV_P)	1193	loop_destroy (EV_P)
899	{	1194	{
900	int i;	1195	int i;
		1196
		1197	if (ev_is_active (&pipeev))
		1198	{
		1199	ev_ref (EV_A); /* signal watcher */
		1200	ev_io_stop (EV_A_ &pipeev);
		1201
		1202	#if EV_USE_EVENTFD
		1203	if (evfd >= 0)
		1204	close (evfd);
		1205	#endif
		1206
		1207	if (evpipe [0] >= 0)
		1208	{
		1209	close (evpipe [0]);
		1210	close (evpipe [1]);
		1211	}
		1212	}
		1213
		1214	#if EV_USE_INOTIFY
		1215	if (fs_fd >= 0)
		1216	close (fs_fd);
		1217	#endif
		1218
		1219	if (backend_fd >= 0)
		1220	close (backend_fd);
901		1221
902	#if EV_USE_PORT	1222	#if EV_USE_PORT
903	if (backend == EVBACKEND_PORT ) port_destroy (EV_A);	1223	if (backend == EVBACKEND_PORT ) port_destroy (EV_A);
904	#endif	1224	#endif
905	#if EV_USE_KQUEUE	1225	#if EV_USE_KQUEUE
…		…
914	#if EV_USE_SELECT	1234	#if EV_USE_SELECT
915	if (backend == EVBACKEND_SELECT) select_destroy (EV_A);	1235	if (backend == EVBACKEND_SELECT) select_destroy (EV_A);
916	#endif	1236	#endif
917		1237
918	for (i = NUMPRI; i--; )	1238	for (i = NUMPRI; i--; )
		1239	{
919	array_free (pending, [i]);	1240	array_free (pending, [i]);
		1241	#if EV_IDLE_ENABLE
		1242	array_free (idle, [i]);
		1243	#endif
		1244	}
		1245
		1246	ev_free (anfds); anfdmax = 0;
920		1247
921	/* have to use the microsoft-never-gets-it-right macro */	1248	/* have to use the microsoft-never-gets-it-right macro */
922	array_free (fdchange, EMPTY0);	1249	array_free (fdchange, EMPTY);
923	array_free (timer, EMPTY0);	1250	array_free (timer, EMPTY);
924	#if EV_PERIODIC_ENABLE	1251	#if EV_PERIODIC_ENABLE
925	array_free (periodic, EMPTY0);	1252	array_free (periodic, EMPTY);
926	#endif	1253	#endif
		1254	#if EV_FORK_ENABLE
927	array_free (idle, EMPTY0);	1255	array_free (fork, EMPTY);
		1256	#endif
928	array_free (prepare, EMPTY0);	1257	array_free (prepare, EMPTY);
929	array_free (check, EMPTY0);	1258	array_free (check, EMPTY);
		1259	#if EV_ASYNC_ENABLE
		1260	array_free (async, EMPTY);
		1261	#endif
930		1262
931	backend = 0;	1263	backend = 0;
932	}	1264	}
933		1265
934	static void	1266	void inline_size infy_fork (EV_P);
		1267
		1268	void inline_size
935	loop_fork (EV_P)	1269	loop_fork (EV_P)
936	{	1270	{
937	#if EV_USE_PORT	1271	#if EV_USE_PORT
938	if (backend == EVBACKEND_PORT ) port_fork (EV_A);	1272	if (backend == EVBACKEND_PORT ) port_fork (EV_A);
939	#endif	1273	#endif
…		…
941	if (backend == EVBACKEND_KQUEUE) kqueue_fork (EV_A);	1275	if (backend == EVBACKEND_KQUEUE) kqueue_fork (EV_A);
942	#endif	1276	#endif
943	#if EV_USE_EPOLL	1277	#if EV_USE_EPOLL
944	if (backend == EVBACKEND_EPOLL ) epoll_fork (EV_A);	1278	if (backend == EVBACKEND_EPOLL ) epoll_fork (EV_A);
945	#endif	1279	#endif
		1280	#if EV_USE_INOTIFY
		1281	infy_fork (EV_A);
		1282	#endif
946		1283
947	if (ev_is_active (&sigev))	1284	if (ev_is_active (&pipeev))
948	{	1285	{
949	/* default loop */	1286	/* this "locks" the handlers against writing to the pipe */
		1287	/* while we modify the fd vars */
		1288	gotsig = 1;
		1289	#if EV_ASYNC_ENABLE
		1290	gotasync = 1;
		1291	#endif
950		1292
951	ev_ref (EV_A);	1293	ev_ref (EV_A);
952	ev_io_stop (EV_A_ &sigev);	1294	ev_io_stop (EV_A_ &pipeev);
		1295
		1296	#if EV_USE_EVENTFD
		1297	if (evfd >= 0)
		1298	close (evfd);
		1299	#endif
		1300
		1301	if (evpipe [0] >= 0)
		1302	{
953	close (sigpipe [0]);	1303	close (evpipe [0]);
954	close (sigpipe [1]);	1304	close (evpipe [1]);
		1305	}
955		1306
956	while (pipe (sigpipe))
957	syserr ("(libev) error creating pipe");
958
959	siginit (EV_A);	1307	evpipe_init (EV_A);
		1308	/* now iterate over everything, in case we missed something */
		1309	pipecb (EV_A_ &pipeev, EV_READ);
960	}	1310	}
961		1311
962	postfork = 0;	1312	postfork = 0;
963	}	1313	}
964		1314
…		…
986	}	1336	}
987		1337
988	void	1338	void
989	ev_loop_fork (EV_P)	1339	ev_loop_fork (EV_P)
990	{	1340	{
991	postfork = 1;	1341	postfork = 1; /* must be in line with ev_default_fork */
992	}	1342	}
993		1343
994	#endif	1344	#endif
995		1345
996	#if EV_MULTIPLICITY	1346	#if EV_MULTIPLICITY
…		…
999	#else	1349	#else
1000	int	1350	int
1001	ev_default_loop (unsigned int flags)	1351	ev_default_loop (unsigned int flags)
1002	#endif	1352	#endif
1003	{	1353	{
1004	if (sigpipe [0] == sigpipe [1])
1005	if (pipe (sigpipe))
1006	return 0;
1007
1008	if (!ev_default_loop_ptr)	1354	if (!ev_default_loop_ptr)
1009	{	1355	{
1010	#if EV_MULTIPLICITY	1356	#if EV_MULTIPLICITY
1011	struct ev_loop *loop = ev_default_loop_ptr = &default_loop_struct;	1357	struct ev_loop *loop = ev_default_loop_ptr = &default_loop_struct;
1012	#else	1358	#else
…		…
1015		1361
1016	loop_init (EV_A_ flags);	1362	loop_init (EV_A_ flags);
1017		1363
1018	if (ev_backend (EV_A))	1364	if (ev_backend (EV_A))
1019	{	1365	{
1020	siginit (EV_A);
1021
1022	#ifndef _WIN32	1366	#ifndef _WIN32
1023	ev_signal_init (&childev, childcb, SIGCHLD);	1367	ev_signal_init (&childev, childcb, SIGCHLD);
1024	ev_set_priority (&childev, EV_MAXPRI);	1368	ev_set_priority (&childev, EV_MAXPRI);
1025	ev_signal_start (EV_A_ &childev);	1369	ev_signal_start (EV_A_ &childev);
1026	ev_unref (EV_A); /* child watcher should not keep loop alive */	1370	ev_unref (EV_A); /* child watcher should not keep loop alive */
…		…
1043	#ifndef _WIN32	1387	#ifndef _WIN32
1044	ev_ref (EV_A); /* child watcher */	1388	ev_ref (EV_A); /* child watcher */
1045	ev_signal_stop (EV_A_ &childev);	1389	ev_signal_stop (EV_A_ &childev);
1046	#endif	1390	#endif
1047		1391
1048	ev_ref (EV_A); /* signal watcher */
1049	ev_io_stop (EV_A_ &sigev);
1050
1051	close (sigpipe [0]); sigpipe [0] = 0;
1052	close (sigpipe [1]); sigpipe [1] = 0;
1053
1054	loop_destroy (EV_A);	1392	loop_destroy (EV_A);
1055	}	1393	}
1056		1394
1057	void	1395	void
1058	ev_default_fork (void)	1396	ev_default_fork (void)
…		…
1060	#if EV_MULTIPLICITY	1398	#if EV_MULTIPLICITY
1061	struct ev_loop *loop = ev_default_loop_ptr;	1399	struct ev_loop *loop = ev_default_loop_ptr;
1062	#endif	1400	#endif
1063		1401
1064	if (backend)	1402	if (backend)
1065	postfork = 1;	1403	postfork = 1; /* must be in line with ev_loop_fork */
1066	}	1404	}
1067		1405
1068	/*****************************************************************************/	1406	/*****************************************************************************/
1069		1407
1070	int inline_size	1408	void
1071	any_pending (EV_P)	1409	ev_invoke (EV_P_ void *w, int revents)
1072	{	1410	{
1073	int pri;	1411	EV_CB_INVOKE ((W)w, revents);
1074
1075	for (pri = NUMPRI; pri--; )
1076	if (pendingcnt [pri])
1077	return 1;
1078
1079	return 0;
1080	}	1412	}
1081		1413
1082	void inline_speed	1414	void inline_speed
1083	call_pending (EV_P)	1415	call_pending (EV_P)
1084	{	1416	{
…		…
1089	{	1421	{
1090	ANPENDING *p = pendings [pri] + --pendingcnt [pri];	1422	ANPENDING *p = pendings [pri] + --pendingcnt [pri];
1091		1423
1092	if (expect_true (p->w))	1424	if (expect_true (p->w))
1093	{	1425	{
1094	assert (("non-pending watcher on pending list", p->w->pending));	1426	/*assert (("non-pending watcher on pending list", p->w->pending));*/
1095		1427
1096	p->w->pending = 0;	1428	p->w->pending = 0;
1097	EV_CB_INVOKE (p->w, p->events);	1429	EV_CB_INVOKE (p->w, p->events);
1098	}	1430	}
1099	}	1431	}
…		…
1102	void inline_size	1434	void inline_size
1103	timers_reify (EV_P)	1435	timers_reify (EV_P)
1104	{	1436	{
1105	while (timercnt && ((WT)timers [0])->at <= mn_now)	1437	while (timercnt && ((WT)timers [0])->at <= mn_now)
1106	{	1438	{
1107	ev_timer *w = timers [0];	1439	ev_timer *w = (ev_timer *)timers [0];
1108		1440
1109	assert (("inactive timer on timer heap detected", ev_is_active (w)));	1441	/*assert (("inactive timer on timer heap detected", ev_is_active (w)));*/
1110		1442
1111	/* first reschedule or stop timer */	1443	/* first reschedule or stop timer */
1112	if (w->repeat)	1444	if (w->repeat)
1113	{	1445	{
1114	assert (("negative ev_timer repeat value found while processing timers", w->repeat > 0.));	1446	assert (("negative ev_timer repeat value found while processing timers", w->repeat > 0.));
1115		1447
1116	((WT)w)->at += w->repeat;	1448	((WT)w)->at += w->repeat;
1117	if (((WT)w)->at < mn_now)	1449	if (((WT)w)->at < mn_now)
1118	((WT)w)->at = mn_now;	1450	((WT)w)->at = mn_now;
1119		1451
1120	downheap ((WT *)timers, timercnt, 0);	1452	downheap (timers, timercnt, 0);
1121	}	1453	}
1122	else	1454	else
1123	ev_timer_stop (EV_A_ w); /* nonrepeating: stop timer */	1455	ev_timer_stop (EV_A_ w); /* nonrepeating: stop timer */
1124		1456
1125	ev_feed_event (EV_A_ (W)w, EV_TIMEOUT);	1457	ev_feed_event (EV_A_ (W)w, EV_TIMEOUT);
…		…
1130	void inline_size	1462	void inline_size
1131	periodics_reify (EV_P)	1463	periodics_reify (EV_P)
1132	{	1464	{
1133	while (periodiccnt && ((WT)periodics [0])->at <= ev_rt_now)	1465	while (periodiccnt && ((WT)periodics [0])->at <= ev_rt_now)
1134	{	1466	{
1135	ev_periodic *w = periodics [0];	1467	ev_periodic *w = (ev_periodic *)periodics [0];
1136		1468
1137	assert (("inactive timer on periodic heap detected", ev_is_active (w)));	1469	/*assert (("inactive timer on periodic heap detected", ev_is_active (w)));*/
1138		1470
1139	/* first reschedule or stop timer */	1471	/* first reschedule or stop timer */
1140	if (w->reschedule_cb)	1472	if (w->reschedule_cb)
1141	{	1473	{
1142	((WT)w)->at = w->reschedule_cb (w, ev_rt_now + 0.0001);	1474	((WT)w)->at = w->reschedule_cb (w, ev_rt_now + TIME_EPSILON);
1143	assert (("ev_periodic reschedule callback returned time in the past", ((WT)w)->at > ev_rt_now));	1475	assert (("ev_periodic reschedule callback returned time in the past", ((WT)w)->at > ev_rt_now));
1144	downheap ((WT *)periodics, periodiccnt, 0);	1476	downheap (periodics, periodiccnt, 0);
1145	}	1477	}
1146	else if (w->interval)	1478	else if (w->interval)
1147	{	1479	{
1148	((WT)w)->at += floor ((ev_rt_now - ((WT)w)->at) / w->interval + 1.) * w->interval;	1480	((WT)w)->at = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval;
		1481	if (((WT)w)->at - ev_rt_now <= TIME_EPSILON) ((WT)w)->at += w->interval;
1149	assert (("ev_periodic timeout in the past detected while processing timers, negative interval?", ((WT)w)->at > ev_rt_now));	1482	assert (("ev_periodic timeout in the past detected while processing timers, negative interval?", ((WT)w)->at > ev_rt_now));
1150	downheap ((WT *)periodics, periodiccnt, 0);	1483	downheap (periodics, periodiccnt, 0);
1151	}	1484	}
1152	else	1485	else
1153	ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */	1486	ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */
1154		1487
1155	ev_feed_event (EV_A_ (W)w, EV_PERIODIC);	1488	ev_feed_event (EV_A_ (W)w, EV_PERIODIC);
…		…
1162	int i;	1495	int i;
1163		1496
1164	/* adjust periodics after time jump */	1497	/* adjust periodics after time jump */
1165	for (i = 0; i < periodiccnt; ++i)	1498	for (i = 0; i < periodiccnt; ++i)
1166	{	1499	{
1167	ev_periodic *w = periodics [i];	1500	ev_periodic *w = (ev_periodic *)periodics [i];
1168		1501
1169	if (w->reschedule_cb)	1502	if (w->reschedule_cb)
1170	((WT)w)->at = w->reschedule_cb (w, ev_rt_now);	1503	((WT)w)->at = w->reschedule_cb (w, ev_rt_now);
1171	else if (w->interval)	1504	else if (w->interval)
1172	((WT)w)->at += ceil ((ev_rt_now - ((WT)w)->at) / w->interval) * w->interval;	1505	((WT)w)->at = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval;
1173	}	1506	}
1174		1507
1175	/* now rebuild the heap */	1508	/* now rebuild the heap */
1176	for (i = periodiccnt >> 1; i--; )	1509	for (i = periodiccnt >> 1; i--; )
1177	downheap ((WT *)periodics, periodiccnt, i);	1510	downheap (periodics, periodiccnt, i);
1178	}	1511	}
1179	#endif	1512	#endif
1180		1513
		1514	#if EV_IDLE_ENABLE
1181	int inline_size	1515	void inline_size
1182	time_update_monotonic (EV_P)	1516	idle_reify (EV_P)
1183	{	1517	{
		1518	if (expect_false (idleall))
		1519	{
		1520	int pri;
		1521
		1522	for (pri = NUMPRI; pri--; )
		1523	{
		1524	if (pendingcnt [pri])
		1525	break;
		1526
		1527	if (idlecnt [pri])
		1528	{
		1529	queue_events (EV_A_ (W *)idles [pri], idlecnt [pri], EV_IDLE);
		1530	break;
		1531	}
		1532	}
		1533	}
		1534	}
		1535	#endif
		1536
		1537	void inline_speed
		1538	time_update (EV_P_ ev_tstamp max_block)
		1539	{
		1540	int i;
		1541
		1542	#if EV_USE_MONOTONIC
		1543	if (expect_true (have_monotonic))
		1544	{
		1545	ev_tstamp odiff = rtmn_diff;
		1546
1184	mn_now = get_clock ();	1547	mn_now = get_clock ();
1185		1548
		1549	/* only fetch the realtime clock every 0.5*MIN_TIMEJUMP seconds */
		1550	/* interpolate in the meantime */
1186	if (expect_true (mn_now - now_floor < MIN_TIMEJUMP * .5))	1551	if (expect_true (mn_now - now_floor < MIN_TIMEJUMP * .5))
1187	{	1552	{
1188	ev_rt_now = rtmn_diff + mn_now;	1553	ev_rt_now = rtmn_diff + mn_now;
1189	return 0;	1554	return;
1190	}	1555	}
1191	else	1556
1192	{
1193	now_floor = mn_now;	1557	now_floor = mn_now;
1194	ev_rt_now = ev_time ();	1558	ev_rt_now = ev_time ();
1195	return 1;
1196	}
1197	}
1198		1559
1199	void inline_size	1560	/* loop a few times, before making important decisions.
1200	time_update (EV_P)	1561	* on the choice of "4": one iteration isn't enough,
1201	{	1562	* in case we get preempted during the calls to
1202	int i;	1563	* ev_time and get_clock. a second call is almost guaranteed
1203		1564	* to succeed in that case, though. and looping a few more times
1204	#if EV_USE_MONOTONIC	1565	* doesn't hurt either as we only do this on time-jumps or
1205	if (expect_true (have_monotonic))	1566	* in the unlikely event of having been preempted here.
1206	{	1567	*/
1207	if (time_update_monotonic (EV_A))	1568	for (i = 4; --i; )
1208	{	1569	{
1209	ev_tstamp odiff = rtmn_diff;
1210
1211	/* loop a few times, before making important decisions.
1212	* on the choice of "4": one iteration isn't enough,
1213	* in case we get preempted during the calls to
1214	* ev_time and get_clock. a second call is almost guarenteed
1215	* to succeed in that case, though. and looping a few more times
1216	* doesn't hurt either as we only do this on time-jumps or
1217	* in the unlikely event of getting preempted here.
1218	*/
1219	for (i = 4; --i; )
1220	{
1221	rtmn_diff = ev_rt_now - mn_now;	1570	rtmn_diff = ev_rt_now - mn_now;
1222		1571
1223	if (fabs (odiff - rtmn_diff) < MIN_TIMEJUMP)	1572	if (fabs (odiff - rtmn_diff) < MIN_TIMEJUMP)
1224	return; /* all is well */	1573	return; /* all is well */
1225		1574
1226	ev_rt_now = ev_time ();	1575	ev_rt_now = ev_time ();
1227	mn_now = get_clock ();	1576	mn_now = get_clock ();
1228	now_floor = mn_now;	1577	now_floor = mn_now;
1229	}	1578	}
1230		1579
1231	# if EV_PERIODIC_ENABLE	1580	# if EV_PERIODIC_ENABLE
1232	periodics_reschedule (EV_A);	1581	periodics_reschedule (EV_A);
1233	# endif	1582	# endif
1234	/* no timer adjustment, as the monotonic clock doesn't jump */	1583	/* no timer adjustment, as the monotonic clock doesn't jump */
1235	/* timers_reschedule (EV_A_ rtmn_diff - odiff) */	1584	/* timers_reschedule (EV_A_ rtmn_diff - odiff) */
1236	}
1237	}	1585	}
1238	else	1586	else
1239	#endif	1587	#endif
1240	{	1588	{
1241	ev_rt_now = ev_time ();	1589	ev_rt_now = ev_time ();
1242		1590
1243	if (expect_false (mn_now > ev_rt_now || mn_now < ev_rt_now - MAX_BLOCKTIME - MIN_TIMEJUMP))	1591	if (expect_false (mn_now > ev_rt_now || ev_rt_now > mn_now + max_block + MIN_TIMEJUMP))
1244	{	1592	{
1245	#if EV_PERIODIC_ENABLE	1593	#if EV_PERIODIC_ENABLE
1246	periodics_reschedule (EV_A);	1594	periodics_reschedule (EV_A);
1247	#endif	1595	#endif
1248
1249	/* adjust timers. this is easy, as the offset is the same for all */	1596	/* adjust timers. this is easy, as the offset is the same for all of them */
1250	for (i = 0; i < timercnt; ++i)	1597	for (i = 0; i < timercnt; ++i)
1251	((WT)timers [i])->at += ev_rt_now - mn_now;	1598	((WT)timers [i])->at += ev_rt_now - mn_now;
1252	}	1599	}
1253		1600
1254	mn_now = ev_rt_now;	1601	mn_now = ev_rt_now;
…		…
1270	static int loop_done;	1617	static int loop_done;
1271		1618
1272	void	1619	void
1273	ev_loop (EV_P_ int flags)	1620	ev_loop (EV_P_ int flags)
1274	{	1621	{
1275	loop_done = flags & (EVLOOP_ONESHOT | EVLOOP_NONBLOCK)	1622	loop_done = EVUNLOOP_CANCEL;
1276	? EVUNLOOP_ONE
1277	: EVUNLOOP_CANCEL;
1278		1623
1279	while (activecnt)	1624	call_pending (EV_A); /* in case we recurse, ensure ordering stays nice and clean */
		1625
		1626	do
1280	{	1627	{
		1628	#ifndef _WIN32
		1629	if (expect_false (curpid)) /* penalise the forking check even more */
		1630	if (expect_false (getpid () != curpid))
		1631	{
		1632	curpid = getpid ();
		1633	postfork = 1;
		1634	}
		1635	#endif
		1636
		1637	#if EV_FORK_ENABLE
		1638	/* we might have forked, so queue fork handlers */
		1639	if (expect_false (postfork))
		1640	if (forkcnt)
		1641	{
		1642	queue_events (EV_A_ (W *)forks, forkcnt, EV_FORK);
		1643	call_pending (EV_A);
		1644	}
		1645	#endif
		1646
1281	/* queue check watchers (and execute them) */	1647	/* queue prepare watchers (and execute them) */
1282	if (expect_false (preparecnt))	1648	if (expect_false (preparecnt))
1283	{	1649	{
1284	queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE);	1650	queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE);
1285	call_pending (EV_A);	1651	call_pending (EV_A);
1286	}	1652	}
1287		1653
		1654	if (expect_false (!activecnt))
		1655	break;
		1656
1288	/* we might have forked, so reify kernel state if necessary */	1657	/* we might have forked, so reify kernel state if necessary */
1289	if (expect_false (postfork))	1658	if (expect_false (postfork))
1290	loop_fork (EV_A);	1659	loop_fork (EV_A);
1291		1660
1292	/* update fd-related kernel structures */	1661	/* update fd-related kernel structures */
1293	fd_reify (EV_A);	1662	fd_reify (EV_A);
1294		1663
1295	/* calculate blocking time */	1664	/* calculate blocking time */
1296	{	1665	{
1297	double block;	1666	ev_tstamp waittime = 0.;
		1667	ev_tstamp sleeptime = 0.;
1298		1668
1299	if (flags & EVLOOP_NONBLOCK || idlecnt)	1669	if (expect_true (!(flags & EVLOOP_NONBLOCK || idleall || !activecnt)))
1300	block = 0.; /* do not block at all */
1301	else
1302	{	1670	{
1303	/* update time to cancel out callback processing overhead */	1671	/* update time to cancel out callback processing overhead */
1304	#if EV_USE_MONOTONIC
1305	if (expect_true (have_monotonic))
1306	time_update_monotonic (EV_A);	1672	time_update (EV_A_ 1e100);
1307	else
1308	#endif
1309	{
1310	ev_rt_now = ev_time ();
1311	mn_now = ev_rt_now;
1312	}
1313		1673
1314	block = MAX_BLOCKTIME;	1674	waittime = MAX_BLOCKTIME;
1315		1675
1316	if (timercnt)	1676	if (timercnt)
1317	{	1677	{
1318	ev_tstamp to = ((WT)timers [0])->at - mn_now + backend_fudge;	1678	ev_tstamp to = ((WT)timers [0])->at - mn_now + backend_fudge;
1319	if (block > to) block = to;	1679	if (waittime > to) waittime = to;
1320	}	1680	}
1321		1681
1322	#if EV_PERIODIC_ENABLE	1682	#if EV_PERIODIC_ENABLE
1323	if (periodiccnt)	1683	if (periodiccnt)
1324	{	1684	{
1325	ev_tstamp to = ((WT)periodics [0])->at - ev_rt_now + backend_fudge;	1685	ev_tstamp to = ((WT)periodics [0])->at - ev_rt_now + backend_fudge;
1326	if (block > to) block = to;	1686	if (waittime > to) waittime = to;
1327	}	1687	}
1328	#endif	1688	#endif
1329		1689
1330	if (expect_false (block < 0.)) block = 0.;	1690	if (expect_false (waittime < timeout_blocktime))
		1691	waittime = timeout_blocktime;
		1692
		1693	sleeptime = waittime - backend_fudge;
		1694
		1695	if (expect_true (sleeptime > io_blocktime))
		1696	sleeptime = io_blocktime;
		1697
		1698	if (sleeptime)
		1699	{
		1700	ev_sleep (sleeptime);
		1701	waittime -= sleeptime;
		1702	}
1331	}	1703	}
1332		1704
		1705	++loop_count;
1333	backend_poll (EV_A_ block);	1706	backend_poll (EV_A_ waittime);
		1707
		1708	/* update ev_rt_now, do magic */
		1709	time_update (EV_A_ waittime + sleeptime);
1334	}	1710	}
1335
1336	/* update ev_rt_now, do magic */
1337	time_update (EV_A);
1338		1711
1339	/* queue pending timers and reschedule them */	1712	/* queue pending timers and reschedule them */
1340	timers_reify (EV_A); /* relative timers called last */	1713	timers_reify (EV_A); /* relative timers called last */
1341	#if EV_PERIODIC_ENABLE	1714	#if EV_PERIODIC_ENABLE
1342	periodics_reify (EV_A); /* absolute timers called first */	1715	periodics_reify (EV_A); /* absolute timers called first */
1343	#endif	1716	#endif
1344		1717
		1718	#if EV_IDLE_ENABLE
1345	/* queue idle watchers unless other events are pending */	1719	/* queue idle watchers unless other events are pending */
1346	if (idlecnt && !any_pending (EV_A))	1720	idle_reify (EV_A);
1347	queue_events (EV_A_ (W *)idles, idlecnt, EV_IDLE);	1721	#endif
1348		1722
1349	/* queue check watchers, to be executed first */	1723	/* queue check watchers, to be executed first */
1350	if (expect_false (checkcnt))	1724	if (expect_false (checkcnt))
1351	queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK);	1725	queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK);
1352		1726
1353	call_pending (EV_A);	1727	call_pending (EV_A);
1354
1355	if (expect_false (loop_done))
1356	break;
1357	}	1728	}
		1729	while (expect_true (
		1730	activecnt
		1731	&& !loop_done
		1732	&& !(flags & (EVLOOP_ONESHOT | EVLOOP_NONBLOCK))
		1733	));
1358		1734
1359	if (loop_done == EVUNLOOP_ONE)	1735	if (loop_done == EVUNLOOP_ONE)
1360	loop_done = EVUNLOOP_CANCEL;	1736	loop_done = EVUNLOOP_CANCEL;
1361	}	1737	}
1362		1738
…		…
1389	head = &(*head)->next;	1765	head = &(*head)->next;
1390	}	1766	}
1391	}	1767	}
1392		1768
1393	void inline_speed	1769	void inline_speed
1394	ev_clear_pending (EV_P_ W w)	1770	clear_pending (EV_P_ W w)
1395	{	1771	{
1396	if (w->pending)	1772	if (w->pending)
1397	{	1773	{
1398	pendings [ABSPRI (w)][w->pending - 1].w = 0;	1774	pendings [ABSPRI (w)][w->pending - 1].w = 0;
1399	w->pending = 0;	1775	w->pending = 0;
1400	}	1776	}
1401	}	1777	}
1402		1778
		1779	int
		1780	ev_clear_pending (EV_P_ void *w)
		1781	{
		1782	W w_ = (W)w;
		1783	int pending = w_->pending;
		1784
		1785	if (expect_true (pending))
		1786	{
		1787	ANPENDING *p = pendings [ABSPRI (w_)] + pending - 1;
		1788	w_->pending = 0;
		1789	p->w = 0;
		1790	return p->events;
		1791	}
		1792	else
		1793	return 0;
		1794	}
		1795
		1796	void inline_size
		1797	pri_adjust (EV_P_ W w)
		1798	{
		1799	int pri = w->priority;
		1800	pri = pri < EV_MINPRI ? EV_MINPRI : pri;
		1801	pri = pri > EV_MAXPRI ? EV_MAXPRI : pri;
		1802	w->priority = pri;
		1803	}
		1804
1403	void inline_speed	1805	void inline_speed
1404	ev_start (EV_P_ W w, int active)	1806	ev_start (EV_P_ W w, int active)
1405	{	1807	{
1406	if (w->priority < EV_MINPRI) w->priority = EV_MINPRI;	1808	pri_adjust (EV_A_ w);
1407	if (w->priority > EV_MAXPRI) w->priority = EV_MAXPRI;
1408
1409	w->active = active;	1809	w->active = active;
1410	ev_ref (EV_A);	1810	ev_ref (EV_A);
1411	}	1811	}
1412		1812
1413	void inline_size	1813	void inline_size
…		…
1417	w->active = 0;	1817	w->active = 0;
1418	}	1818	}
1419		1819
1420	/*****************************************************************************/	1820	/*****************************************************************************/
1421		1821
1422	void	1822	void noinline
1423	ev_io_start (EV_P_ ev_io *w)	1823	ev_io_start (EV_P_ ev_io *w)
1424	{	1824	{
1425	int fd = w->fd;	1825	int fd = w->fd;
1426		1826
1427	if (expect_false (ev_is_active (w)))	1827	if (expect_false (ev_is_active (w)))
…		…
1429		1829
1430	assert (("ev_io_start called with negative fd", fd >= 0));	1830	assert (("ev_io_start called with negative fd", fd >= 0));
1431		1831
1432	ev_start (EV_A_ (W)w, 1);	1832	ev_start (EV_A_ (W)w, 1);
1433	array_needsize (ANFD, anfds, anfdmax, fd + 1, anfds_init);	1833	array_needsize (ANFD, anfds, anfdmax, fd + 1, anfds_init);
1434	wlist_add ((WL *)&anfds[fd].head, (WL)w);	1834	wlist_add (&anfds[fd].head, (WL)w);
1435		1835
1436	fd_change (EV_A_ fd);	1836	fd_change (EV_A_ fd, w->events & EV_IOFDSET | 1);
		1837	w->events &= ~EV_IOFDSET;
1437	}	1838	}
1438		1839
1439	void	1840	void noinline
1440	ev_io_stop (EV_P_ ev_io *w)	1841	ev_io_stop (EV_P_ ev_io *w)
1441	{	1842	{
1442	ev_clear_pending (EV_A_ (W)w);	1843	clear_pending (EV_A_ (W)w);
1443	if (expect_false (!ev_is_active (w)))	1844	if (expect_false (!ev_is_active (w)))
1444	return;	1845	return;
1445		1846
1446	assert (("ev_io_start called with illegal fd (must stay constant after start!)", w->fd >= 0 && w->fd < anfdmax));	1847	assert (("ev_io_start called with illegal fd (must stay constant after start!)", w->fd >= 0 && w->fd < anfdmax));
1447		1848
1448	wlist_del ((WL *)&anfds[w->fd].head, (WL)w);	1849	wlist_del (&anfds[w->fd].head, (WL)w);
1449	ev_stop (EV_A_ (W)w);	1850	ev_stop (EV_A_ (W)w);
1450		1851
1451	fd_change (EV_A_ w->fd);	1852	fd_change (EV_A_ w->fd, 1);
1452	}	1853	}
1453		1854
1454	void	1855	void noinline
1455	ev_timer_start (EV_P_ ev_timer *w)	1856	ev_timer_start (EV_P_ ev_timer *w)
1456	{	1857	{
1457	if (expect_false (ev_is_active (w)))	1858	if (expect_false (ev_is_active (w)))
1458	return;	1859	return;
1459		1860
1460	((WT)w)->at += mn_now;	1861	((WT)w)->at += mn_now;
1461		1862
1462	assert (("ev_timer_start called with negative timer repeat value", w->repeat >= 0.));	1863	assert (("ev_timer_start called with negative timer repeat value", w->repeat >= 0.));
1463		1864
1464	ev_start (EV_A_ (W)w, ++timercnt);	1865	ev_start (EV_A_ (W)w, ++timercnt);
1465	array_needsize (ev_timer *, timers, timermax, timercnt, EMPTY2);	1866	array_needsize (WT, timers, timermax, timercnt, EMPTY2);
1466	timers [timercnt - 1] = w;	1867	timers [timercnt - 1] = (WT)w;
1467	upheap ((WT *)timers, timercnt - 1);	1868	upheap (timers, timercnt - 1);
1468		1869
1469	assert (("internal timer heap corruption", timers [((W)w)->active - 1] == w));	1870	/*assert (("internal timer heap corruption", timers [((W)w)->active - 1] == w));*/
1470	}	1871	}
1471		1872
1472	void	1873	void noinline
1473	ev_timer_stop (EV_P_ ev_timer *w)	1874	ev_timer_stop (EV_P_ ev_timer *w)
1474	{	1875	{
1475	ev_clear_pending (EV_A_ (W)w);	1876	clear_pending (EV_A_ (W)w);
1476	if (expect_false (!ev_is_active (w)))	1877	if (expect_false (!ev_is_active (w)))
1477	return;	1878	return;
1478		1879
1479	assert (("internal timer heap corruption", timers [((W)w)->active - 1] == w));	1880	assert (("internal timer heap corruption", timers [((W)w)->active - 1] == (WT)w));
1480		1881
		1882	{
		1883	int active = ((W)w)->active;
		1884
1481	if (expect_true (((W)w)->active < timercnt--))	1885	if (expect_true (--active < --timercnt))
1482	{	1886	{
1483	timers [((W)w)->active - 1] = timers [timercnt];	1887	timers [active] = timers [timercnt];
1484	adjustheap ((WT *)timers, timercnt, ((W)w)->active - 1);	1888	adjustheap (timers, timercnt, active);
1485	}	1889	}
		1890	}
1486		1891
1487	((WT)w)->at -= mn_now;	1892	((WT)w)->at -= mn_now;
1488		1893
1489	ev_stop (EV_A_ (W)w);	1894	ev_stop (EV_A_ (W)w);
1490	}	1895	}
1491		1896
1492	void	1897	void noinline
1493	ev_timer_again (EV_P_ ev_timer *w)	1898	ev_timer_again (EV_P_ ev_timer *w)
1494	{	1899	{
1495	if (ev_is_active (w))	1900	if (ev_is_active (w))
1496	{	1901	{
1497	if (w->repeat)	1902	if (w->repeat)
1498	{	1903	{
1499	((WT)w)->at = mn_now + w->repeat;	1904	((WT)w)->at = mn_now + w->repeat;
1500	adjustheap ((WT *)timers, timercnt, ((W)w)->active - 1);	1905	adjustheap (timers, timercnt, ((W)w)->active - 1);
1501	}	1906	}
1502	else	1907	else
1503	ev_timer_stop (EV_A_ w);	1908	ev_timer_stop (EV_A_ w);
1504	}	1909	}
1505	else if (w->repeat)	1910	else if (w->repeat)
…		…
1508	ev_timer_start (EV_A_ w);	1913	ev_timer_start (EV_A_ w);
1509	}	1914	}
1510	}	1915	}
1511		1916
1512	#if EV_PERIODIC_ENABLE	1917	#if EV_PERIODIC_ENABLE
1513	void	1918	void noinline
1514	ev_periodic_start (EV_P_ ev_periodic *w)	1919	ev_periodic_start (EV_P_ ev_periodic *w)
1515	{	1920	{
1516	if (expect_false (ev_is_active (w)))	1921	if (expect_false (ev_is_active (w)))
1517	return;	1922	return;
1518		1923
…		…
1520	((WT)w)->at = w->reschedule_cb (w, ev_rt_now);	1925	((WT)w)->at = w->reschedule_cb (w, ev_rt_now);
1521	else if (w->interval)	1926	else if (w->interval)
1522	{	1927	{
1523	assert (("ev_periodic_start called with negative interval value", w->interval >= 0.));	1928	assert (("ev_periodic_start called with negative interval value", w->interval >= 0.));
1524	/* this formula differs from the one in periodic_reify because we do not always round up */	1929	/* this formula differs from the one in periodic_reify because we do not always round up */
1525	((WT)w)->at += ceil ((ev_rt_now - ((WT)w)->at) / w->interval) * w->interval;	1930	((WT)w)->at = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval;
1526	}	1931	}
		1932	else
		1933	((WT)w)->at = w->offset;
1527		1934
1528	ev_start (EV_A_ (W)w, ++periodiccnt);	1935	ev_start (EV_A_ (W)w, ++periodiccnt);
1529	array_needsize (ev_periodic *, periodics, periodicmax, periodiccnt, EMPTY2);	1936	array_needsize (WT, periodics, periodicmax, periodiccnt, EMPTY2);
1530	periodics [periodiccnt - 1] = w;	1937	periodics [periodiccnt - 1] = (WT)w;
1531	upheap ((WT *)periodics, periodiccnt - 1);	1938	upheap (periodics, periodiccnt - 1);
1532		1939
1533	assert (("internal periodic heap corruption", periodics [((W)w)->active - 1] == w));	1940	/*assert (("internal periodic heap corruption", periodics [((W)w)->active - 1] == w));*/
1534	}	1941	}
1535		1942
1536	void	1943	void noinline
1537	ev_periodic_stop (EV_P_ ev_periodic *w)	1944	ev_periodic_stop (EV_P_ ev_periodic *w)
1538	{	1945	{
1539	ev_clear_pending (EV_A_ (W)w);	1946	clear_pending (EV_A_ (W)w);
1540	if (expect_false (!ev_is_active (w)))	1947	if (expect_false (!ev_is_active (w)))
1541	return;	1948	return;
1542		1949
1543	assert (("internal periodic heap corruption", periodics [((W)w)->active - 1] == w));	1950	assert (("internal periodic heap corruption", periodics [((W)w)->active - 1] == (WT)w));
1544		1951
		1952	{
		1953	int active = ((W)w)->active;
		1954
1545	if (expect_true (((W)w)->active < periodiccnt--))	1955	if (expect_true (--active < --periodiccnt))
1546	{	1956	{
1547	periodics [((W)w)->active - 1] = periodics [periodiccnt];	1957	periodics [active] = periodics [periodiccnt];
1548	adjustheap ((WT *)periodics, periodiccnt, ((W)w)->active - 1);	1958	adjustheap (periodics, periodiccnt, active);
1549	}	1959	}
		1960	}
1550		1961
1551	ev_stop (EV_A_ (W)w);	1962	ev_stop (EV_A_ (W)w);
1552	}	1963	}
1553		1964
1554	void	1965	void noinline
1555	ev_periodic_again (EV_P_ ev_periodic *w)	1966	ev_periodic_again (EV_P_ ev_periodic *w)
1556	{	1967	{
1557	/* TODO: use adjustheap and recalculation */	1968	/* TODO: use adjustheap and recalculation */
1558	ev_periodic_stop (EV_A_ w);	1969	ev_periodic_stop (EV_A_ w);
1559	ev_periodic_start (EV_A_ w);	1970	ev_periodic_start (EV_A_ w);
1560	}	1971	}
1561	#endif	1972	#endif
1562		1973
		1974	#ifndef SA_RESTART
		1975	# define SA_RESTART 0
		1976	#endif
		1977
		1978	void noinline
		1979	ev_signal_start (EV_P_ ev_signal *w)
		1980	{
		1981	#if EV_MULTIPLICITY
		1982	assert (("signal watchers are only supported in the default loop", loop == ev_default_loop_ptr));
		1983	#endif
		1984	if (expect_false (ev_is_active (w)))
		1985	return;
		1986
		1987	assert (("ev_signal_start called with illegal signal number", w->signum > 0));
		1988
		1989	evpipe_init (EV_A);
		1990
		1991	{
		1992	#ifndef _WIN32
		1993	sigset_t full, prev;
		1994	sigfillset (&full);
		1995	sigprocmask (SIG_SETMASK, &full, &prev);
		1996	#endif
		1997
		1998	array_needsize (ANSIG, signals, signalmax, w->signum, signals_init);
		1999
		2000	#ifndef _WIN32
		2001	sigprocmask (SIG_SETMASK, &prev, 0);
		2002	#endif
		2003	}
		2004
		2005	ev_start (EV_A_ (W)w, 1);
		2006	wlist_add (&signals [w->signum - 1].head, (WL)w);
		2007
		2008	if (!((WL)w)->next)
		2009	{
		2010	#if _WIN32
		2011	signal (w->signum, ev_sighandler);
		2012	#else
		2013	struct sigaction sa;
		2014	sa.sa_handler = ev_sighandler;
		2015	sigfillset (&sa.sa_mask);
		2016	sa.sa_flags = SA_RESTART; /* if restarting works we save one iteration */
		2017	sigaction (w->signum, &sa, 0);
		2018	#endif
		2019	}
		2020	}
		2021
		2022	void noinline
		2023	ev_signal_stop (EV_P_ ev_signal *w)
		2024	{
		2025	clear_pending (EV_A_ (W)w);
		2026	if (expect_false (!ev_is_active (w)))
		2027	return;
		2028
		2029	wlist_del (&signals [w->signum - 1].head, (WL)w);
		2030	ev_stop (EV_A_ (W)w);
		2031
		2032	if (!signals [w->signum - 1].head)
		2033	signal (w->signum, SIG_DFL);
		2034	}
		2035
		2036	void
		2037	ev_child_start (EV_P_ ev_child *w)
		2038	{
		2039	#if EV_MULTIPLICITY
		2040	assert (("child watchers are only supported in the default loop", loop == ev_default_loop_ptr));
		2041	#endif
		2042	if (expect_false (ev_is_active (w)))
		2043	return;
		2044
		2045	ev_start (EV_A_ (W)w, 1);
		2046	wlist_add (&childs [w->pid & (EV_PID_HASHSIZE - 1)], (WL)w);
		2047	}
		2048
		2049	void
		2050	ev_child_stop (EV_P_ ev_child *w)
		2051	{
		2052	clear_pending (EV_A_ (W)w);
		2053	if (expect_false (!ev_is_active (w)))
		2054	return;
		2055
		2056	wlist_del (&childs [w->pid & (EV_PID_HASHSIZE - 1)], (WL)w);
		2057	ev_stop (EV_A_ (W)w);
		2058	}
		2059
		2060	#if EV_STAT_ENABLE
		2061
		2062	# ifdef _WIN32
		2063	# undef lstat
		2064	# define lstat(a,b) _stati64 (a,b)
		2065	# endif
		2066
		2067	#define DEF_STAT_INTERVAL 5.0074891
		2068	#define MIN_STAT_INTERVAL 0.1074891
		2069
		2070	static void noinline stat_timer_cb (EV_P_ ev_timer *w_, int revents);
		2071
		2072	#if EV_USE_INOTIFY
		2073	# define EV_INOTIFY_BUFSIZE 8192
		2074
		2075	static void noinline
		2076	infy_add (EV_P_ ev_stat *w)
		2077	{
		2078	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);
		2079
		2080	if (w->wd < 0)
		2081	{
		2082	ev_timer_start (EV_A_ &w->timer); /* this is not race-free, so we still need to recheck periodically */
		2083
		2084	/* monitor some parent directory for speedup hints */
		2085	if ((errno == ENOENT || errno == EACCES) && strlen (w->path) < 4096)
		2086	{
		2087	char path [4096];
		2088	strcpy (path, w->path);
		2089
		2090	do
		2091	{
		2092	int mask = IN_MASK_ADD | IN_DELETE_SELF | IN_MOVE_SELF
		2093	| (errno == EACCES ? IN_ATTRIB : IN_CREATE | IN_MOVED_TO);
		2094
		2095	char *pend = strrchr (path, '/');
		2096
		2097	if (!pend)
		2098	break; /* whoops, no '/', complain to your admin */
		2099
		2100	*pend = 0;
		2101	w->wd = inotify_add_watch (fs_fd, path, mask);
		2102	}
		2103	while (w->wd < 0 && (errno == ENOENT || errno == EACCES));
		2104	}
		2105	}
		2106	else
		2107	ev_timer_stop (EV_A_ &w->timer); /* we can watch this in a race-free way */
		2108
		2109	if (w->wd >= 0)
		2110	wlist_add (&fs_hash [w->wd & (EV_INOTIFY_HASHSIZE - 1)].head, (WL)w);
		2111	}
		2112
		2113	static void noinline
		2114	infy_del (EV_P_ ev_stat *w)
		2115	{
		2116	int slot;
		2117	int wd = w->wd;
		2118
		2119	if (wd < 0)
		2120	return;
		2121
		2122	w->wd = -2;
		2123	slot = wd & (EV_INOTIFY_HASHSIZE - 1);
		2124	wlist_del (&fs_hash [slot].head, (WL)w);
		2125
		2126	/* remove this watcher, if others are watching it, they will rearm */
		2127	inotify_rm_watch (fs_fd, wd);
		2128	}
		2129
		2130	static void noinline
		2131	infy_wd (EV_P_ int slot, int wd, struct inotify_event *ev)
		2132	{
		2133	if (slot < 0)
		2134	/* overflow, need to check for all hahs slots */
		2135	for (slot = 0; slot < EV_INOTIFY_HASHSIZE; ++slot)
		2136	infy_wd (EV_A_ slot, wd, ev);
		2137	else
		2138	{
		2139	WL w_;
		2140
		2141	for (w_ = fs_hash [slot & (EV_INOTIFY_HASHSIZE - 1)].head; w_; )
		2142	{
		2143	ev_stat *w = (ev_stat *)w_;
		2144	w_ = w_->next; /* lets us remove this watcher and all before it */
		2145
		2146	if (w->wd == wd || wd == -1)
		2147	{
		2148	if (ev->mask & (IN_IGNORED | IN_UNMOUNT | IN_DELETE_SELF))
		2149	{
		2150	w->wd = -1;
		2151	infy_add (EV_A_ w); /* re-add, no matter what */
		2152	}
		2153
		2154	stat_timer_cb (EV_A_ &w->timer, 0);
		2155	}
		2156	}
		2157	}
		2158	}
		2159
		2160	static void
		2161	infy_cb (EV_P_ ev_io *w, int revents)
		2162	{
		2163	char buf [EV_INOTIFY_BUFSIZE];
		2164	struct inotify_event *ev = (struct inotify_event *)buf;
		2165	int ofs;
		2166	int len = read (fs_fd, buf, sizeof (buf));
		2167
		2168	for (ofs = 0; ofs < len; ofs += sizeof (struct inotify_event) + ev->len)
		2169	infy_wd (EV_A_ ev->wd, ev->wd, ev);
		2170	}
		2171
		2172	void inline_size
		2173	infy_init (EV_P)
		2174	{
		2175	if (fs_fd != -2)
		2176	return;
		2177
		2178	fs_fd = inotify_init ();
		2179
		2180	if (fs_fd >= 0)
		2181	{
		2182	ev_io_init (&fs_w, infy_cb, fs_fd, EV_READ);
		2183	ev_set_priority (&fs_w, EV_MAXPRI);
		2184	ev_io_start (EV_A_ &fs_w);
		2185	}
		2186	}
		2187
		2188	void inline_size
		2189	infy_fork (EV_P)
		2190	{
		2191	int slot;
		2192
		2193	if (fs_fd < 0)
		2194	return;
		2195
		2196	close (fs_fd);
		2197	fs_fd = inotify_init ();
		2198
		2199	for (slot = 0; slot < EV_INOTIFY_HASHSIZE; ++slot)
		2200	{
		2201	WL w_ = fs_hash [slot].head;
		2202	fs_hash [slot].head = 0;
		2203
		2204	while (w_)
		2205	{
		2206	ev_stat *w = (ev_stat *)w_;
		2207	w_ = w_->next; /* lets us add this watcher */
		2208
		2209	w->wd = -1;
		2210
		2211	if (fs_fd >= 0)
		2212	infy_add (EV_A_ w); /* re-add, no matter what */
		2213	else
		2214	ev_timer_start (EV_A_ &w->timer);
		2215	}
		2216
		2217	}
		2218	}
		2219
		2220	#endif
		2221
		2222	void
		2223	ev_stat_stat (EV_P_ ev_stat *w)
		2224	{
		2225	if (lstat (w->path, &w->attr) < 0)
		2226	w->attr.st_nlink = 0;
		2227	else if (!w->attr.st_nlink)
		2228	w->attr.st_nlink = 1;
		2229	}
		2230
		2231	static void noinline
		2232	stat_timer_cb (EV_P_ ev_timer *w_, int revents)
		2233	{
		2234	ev_stat *w = (ev_stat *)(((char *)w_) - offsetof (ev_stat, timer));
		2235
		2236	/* we copy this here each the time so that */
		2237	/* prev has the old value when the callback gets invoked */
		2238	w->prev = w->attr;
		2239	ev_stat_stat (EV_A_ w);
		2240
		2241	/* memcmp doesn't work on netbsd, they.... do stuff to their struct stat */
		2242	if (
		2243	w->prev.st_dev != w->attr.st_dev
		2244	|| w->prev.st_ino != w->attr.st_ino
		2245	|| w->prev.st_mode != w->attr.st_mode
		2246	|| w->prev.st_nlink != w->attr.st_nlink
		2247	|| w->prev.st_uid != w->attr.st_uid
		2248	|| w->prev.st_gid != w->attr.st_gid
		2249	|| w->prev.st_rdev != w->attr.st_rdev
		2250	|| w->prev.st_size != w->attr.st_size
		2251	|| w->prev.st_atime != w->attr.st_atime
		2252	|| w->prev.st_mtime != w->attr.st_mtime
		2253	|| w->prev.st_ctime != w->attr.st_ctime
		2254	) {
		2255	#if EV_USE_INOTIFY
		2256	infy_del (EV_A_ w);
		2257	infy_add (EV_A_ w);
		2258	ev_stat_stat (EV_A_ w); /* avoid race... */
		2259	#endif
		2260
		2261	ev_feed_event (EV_A_ w, EV_STAT);
		2262	}
		2263	}
		2264
		2265	void
		2266	ev_stat_start (EV_P_ ev_stat *w)
		2267	{
		2268	if (expect_false (ev_is_active (w)))
		2269	return;
		2270
		2271	/* since we use memcmp, we need to clear any padding data etc. */
		2272	memset (&w->prev, 0, sizeof (ev_statdata));
		2273	memset (&w->attr, 0, sizeof (ev_statdata));
		2274
		2275	ev_stat_stat (EV_A_ w);
		2276
		2277	if (w->interval < MIN_STAT_INTERVAL)
		2278	w->interval = w->interval ? MIN_STAT_INTERVAL : DEF_STAT_INTERVAL;
		2279
		2280	ev_timer_init (&w->timer, stat_timer_cb, w->interval, w->interval);
		2281	ev_set_priority (&w->timer, ev_priority (w));
		2282
		2283	#if EV_USE_INOTIFY
		2284	infy_init (EV_A);
		2285
		2286	if (fs_fd >= 0)
		2287	infy_add (EV_A_ w);
		2288	else
		2289	#endif
		2290	ev_timer_start (EV_A_ &w->timer);
		2291
		2292	ev_start (EV_A_ (W)w, 1);
		2293	}
		2294
		2295	void
		2296	ev_stat_stop (EV_P_ ev_stat *w)
		2297	{
		2298	clear_pending (EV_A_ (W)w);
		2299	if (expect_false (!ev_is_active (w)))
		2300	return;
		2301
		2302	#if EV_USE_INOTIFY
		2303	infy_del (EV_A_ w);
		2304	#endif
		2305	ev_timer_stop (EV_A_ &w->timer);
		2306
		2307	ev_stop (EV_A_ (W)w);
		2308	}
		2309	#endif
		2310
		2311	#if EV_IDLE_ENABLE
1563	void	2312	void
1564	ev_idle_start (EV_P_ ev_idle *w)	2313	ev_idle_start (EV_P_ ev_idle *w)
1565	{	2314	{
1566	if (expect_false (ev_is_active (w)))	2315	if (expect_false (ev_is_active (w)))
1567	return;	2316	return;
1568		2317
		2318	pri_adjust (EV_A_ (W)w);
		2319
		2320	{
		2321	int active = ++idlecnt [ABSPRI (w)];
		2322
		2323	++idleall;
1569	ev_start (EV_A_ (W)w, ++idlecnt);	2324	ev_start (EV_A_ (W)w, active);
		2325
1570	array_needsize (ev_idle *, idles, idlemax, idlecnt, EMPTY2);	2326	array_needsize (ev_idle *, idles [ABSPRI (w)], idlemax [ABSPRI (w)], active, EMPTY2);
1571	idles [idlecnt - 1] = w;	2327	idles [ABSPRI (w)][active - 1] = w;
		2328	}
1572	}	2329	}
1573		2330
1574	void	2331	void
1575	ev_idle_stop (EV_P_ ev_idle *w)	2332	ev_idle_stop (EV_P_ ev_idle *w)
1576	{	2333	{
1577	ev_clear_pending (EV_A_ (W)w);	2334	clear_pending (EV_A_ (W)w);
1578	if (expect_false (!ev_is_active (w)))	2335	if (expect_false (!ev_is_active (w)))
1579	return;	2336	return;
1580		2337
1581	{	2338	{
1582	int active = ((W)w)->active;	2339	int active = ((W)w)->active;
1583	idles [active - 1] = idles [--idlecnt];	2340
		2341	idles [ABSPRI (w)][active - 1] = idles [ABSPRI (w)][--idlecnt [ABSPRI (w)]];
1584	((W)idles [active - 1])->active = active;	2342	((W)idles [ABSPRI (w)][active - 1])->active = active;
		2343
		2344	ev_stop (EV_A_ (W)w);
		2345	--idleall;
1585	}	2346	}
1586
1587	ev_stop (EV_A_ (W)w);
1588	}	2347	}
		2348	#endif
1589		2349
1590	void	2350	void
1591	ev_prepare_start (EV_P_ ev_prepare *w)	2351	ev_prepare_start (EV_P_ ev_prepare *w)
1592	{	2352	{
1593	if (expect_false (ev_is_active (w)))	2353	if (expect_false (ev_is_active (w)))
…		…
1599	}	2359	}
1600		2360
1601	void	2361	void
1602	ev_prepare_stop (EV_P_ ev_prepare *w)	2362	ev_prepare_stop (EV_P_ ev_prepare *w)
1603	{	2363	{
1604	ev_clear_pending (EV_A_ (W)w);	2364	clear_pending (EV_A_ (W)w);
1605	if (expect_false (!ev_is_active (w)))	2365	if (expect_false (!ev_is_active (w)))
1606	return;	2366	return;
1607		2367
1608	{	2368	{
1609	int active = ((W)w)->active;	2369	int active = ((W)w)->active;
…		…
1626	}	2386	}
1627		2387
1628	void	2388	void
1629	ev_check_stop (EV_P_ ev_check *w)	2389	ev_check_stop (EV_P_ ev_check *w)
1630	{	2390	{
1631	ev_clear_pending (EV_A_ (W)w);	2391	clear_pending (EV_A_ (W)w);
1632	if (expect_false (!ev_is_active (w)))	2392	if (expect_false (!ev_is_active (w)))
1633	return;	2393	return;
1634		2394
1635	{	2395	{
1636	int active = ((W)w)->active;	2396	int active = ((W)w)->active;
…		…
1639	}	2399	}
1640		2400
1641	ev_stop (EV_A_ (W)w);	2401	ev_stop (EV_A_ (W)w);
1642	}	2402	}
1643		2403
1644	#ifndef SA_RESTART
1645	# define SA_RESTART 0
1646	#endif
1647
1648	void
1649	ev_signal_start (EV_P_ ev_signal *w)
1650	{
1651	#if EV_MULTIPLICITY
1652	assert (("signal watchers are only supported in the default loop", loop == ev_default_loop_ptr));
1653	#endif
1654	if (expect_false (ev_is_active (w)))
1655	return;
1656
1657	assert (("ev_signal_start called with illegal signal number", w->signum > 0));
1658
1659	ev_start (EV_A_ (W)w, 1);
1660	array_needsize (ANSIG, signals, signalmax, w->signum, signals_init);
1661	wlist_add ((WL *)&signals [w->signum - 1].head, (WL)w);
1662
1663	if (!((WL)w)->next)
1664	{
1665	#if _WIN32
1666	signal (w->signum, sighandler);
1667	#else
1668	struct sigaction sa;
1669	sa.sa_handler = sighandler;
1670	sigfillset (&sa.sa_mask);
1671	sa.sa_flags = SA_RESTART; /* if restarting works we save one iteration */
1672	sigaction (w->signum, &sa, 0);
1673	#endif
1674	}
1675	}
1676
1677	void
1678	ev_signal_stop (EV_P_ ev_signal *w)
1679	{
1680	ev_clear_pending (EV_A_ (W)w);
1681	if (expect_false (!ev_is_active (w)))
1682	return;
1683
1684	wlist_del ((WL *)&signals [w->signum - 1].head, (WL)w);
1685	ev_stop (EV_A_ (W)w);
1686
1687	if (!signals [w->signum - 1].head)
1688	signal (w->signum, SIG_DFL);
1689	}
1690
1691	void
1692	ev_child_start (EV_P_ ev_child *w)
1693	{
1694	#if EV_MULTIPLICITY
1695	assert (("child watchers are only supported in the default loop", loop == ev_default_loop_ptr));
1696	#endif
1697	if (expect_false (ev_is_active (w)))
1698	return;
1699
1700	ev_start (EV_A_ (W)w, 1);
1701	wlist_add ((WL *)&childs [w->pid & (PID_HASHSIZE - 1)], (WL)w);
1702	}
1703
1704	void
1705	ev_child_stop (EV_P_ ev_child *w)
1706	{
1707	ev_clear_pending (EV_A_ (W)w);
1708	if (expect_false (!ev_is_active (w)))
1709	return;
1710
1711	wlist_del ((WL *)&childs [w->pid & (PID_HASHSIZE - 1)], (WL)w);
1712	ev_stop (EV_A_ (W)w);
1713	}
1714
1715	#if EV_EMBED_ENABLE	2404	#if EV_EMBED_ENABLE
1716	void noinline	2405	void noinline
1717	ev_embed_sweep (EV_P_ ev_embed *w)	2406	ev_embed_sweep (EV_P_ ev_embed *w)
1718	{	2407	{
1719	ev_loop (w->loop, EVLOOP_NONBLOCK);	2408	ev_loop (w->other, EVLOOP_NONBLOCK);
1720	}	2409	}
1721		2410
1722	static void	2411	static void
1723	embed_cb (EV_P_ ev_io *io, int revents)	2412	embed_io_cb (EV_P_ ev_io *io, int revents)
1724	{	2413	{
1725	ev_embed *w = (ev_embed *)(((char *)io) - offsetof (ev_embed, io));	2414	ev_embed *w = (ev_embed *)(((char *)io) - offsetof (ev_embed, io));
1726		2415
1727	if (ev_cb (w))	2416	if (ev_cb (w))
1728	ev_feed_event (EV_A_ (W)w, EV_EMBED);	2417	ev_feed_event (EV_A_ (W)w, EV_EMBED);
1729	else	2418	else
1730	ev_embed_sweep (loop, w);	2419	ev_loop (w->other, EVLOOP_NONBLOCK);
1731	}	2420	}
		2421
		2422	static void
		2423	embed_prepare_cb (EV_P_ ev_prepare *prepare, int revents)
		2424	{
		2425	ev_embed *w = (ev_embed *)(((char *)prepare) - offsetof (ev_embed, prepare));
		2426
		2427	{
		2428	struct ev_loop *loop = w->other;
		2429
		2430	while (fdchangecnt)
		2431	{
		2432	fd_reify (EV_A);
		2433	ev_loop (EV_A_ EVLOOP_NONBLOCK);
		2434	}
		2435	}
		2436	}
		2437
		2438	#if 0
		2439	static void
		2440	embed_idle_cb (EV_P_ ev_idle *idle, int revents)
		2441	{
		2442	ev_idle_stop (EV_A_ idle);
		2443	}
		2444	#endif
1732		2445
1733	void	2446	void
1734	ev_embed_start (EV_P_ ev_embed *w)	2447	ev_embed_start (EV_P_ ev_embed *w)
1735	{	2448	{
1736	if (expect_false (ev_is_active (w)))	2449	if (expect_false (ev_is_active (w)))
1737	return;	2450	return;
1738		2451
1739	{	2452	{
1740	struct ev_loop *loop = w->loop;	2453	struct ev_loop *loop = w->other;
1741	assert (("loop to be embedded is not embeddable", backend & ev_embeddable_backends ()));	2454	assert (("loop to be embedded is not embeddable", backend & ev_embeddable_backends ()));
1742	ev_io_init (&w->io, embed_cb, backend_fd, EV_READ);	2455	ev_io_init (&w->io, embed_io_cb, backend_fd, EV_READ);
1743	}	2456	}
1744		2457
1745	ev_set_priority (&w->io, ev_priority (w));	2458	ev_set_priority (&w->io, ev_priority (w));
1746	ev_io_start (EV_A_ &w->io);	2459	ev_io_start (EV_A_ &w->io);
1747		2460
		2461	ev_prepare_init (&w->prepare, embed_prepare_cb);
		2462	ev_set_priority (&w->prepare, EV_MINPRI);
		2463	ev_prepare_start (EV_A_ &w->prepare);
		2464
		2465	/*ev_idle_init (&w->idle, e,bed_idle_cb);*/
		2466
1748	ev_start (EV_A_ (W)w, 1);	2467	ev_start (EV_A_ (W)w, 1);
1749	}	2468	}
1750		2469
1751	void	2470	void
1752	ev_embed_stop (EV_P_ ev_embed *w)	2471	ev_embed_stop (EV_P_ ev_embed *w)
1753	{	2472	{
1754	ev_clear_pending (EV_A_ (W)w);	2473	clear_pending (EV_A_ (W)w);
1755	if (expect_false (!ev_is_active (w)))	2474	if (expect_false (!ev_is_active (w)))
1756	return;	2475	return;
1757		2476
1758	ev_io_stop (EV_A_ &w->io);	2477	ev_io_stop (EV_A_ &w->io);
		2478	ev_prepare_stop (EV_A_ &w->prepare);
1759		2479
1760	ev_stop (EV_A_ (W)w);	2480	ev_stop (EV_A_ (W)w);
1761	}	2481	}
1762	#endif	2482	#endif
1763		2483
1764	#if EV_STAT_ENABLE	2484	#if EV_FORK_ENABLE
1765
1766	# ifdef _WIN32
1767	# define lstat(a,b) stat(a,b)
1768	# endif
1769
1770	#define DEF_STAT_INTERVAL 5.0074891
1771	#define MIN_STAT_INTERVAL 0.1074891
1772
1773	void	2485	void
1774	ev_stat_stat (EV_P_ ev_stat *w)
1775	{
1776	if (lstat (w->path, &w->attr) < 0)
1777	w->attr.st_nlink = 0;
1778	else if (!w->attr.st_nlink)
1779	w->attr.st_nlink = 1;
1780	}
1781
1782	static void
1783	stat_timer_cb (EV_P_ ev_timer *w_, int revents)
1784	{
1785	ev_stat *w = (ev_stat *)(((char *)w_) - offsetof (ev_stat, timer));
1786
1787	/* we copy this here each the time so that */
1788	/* prev has the old value when the callback gets invoked */
1789	w->prev = w->attr;
1790	ev_stat_stat (EV_A_ w);
1791
1792	if (memcmp (&w->prev, &w->attr, sizeof (ev_statdata)))
1793	ev_feed_event (EV_A_ w, EV_STAT);
1794	}
1795
1796	void
1797	ev_stat_start (EV_P_ ev_stat *w)	2486	ev_fork_start (EV_P_ ev_fork *w)
1798	{	2487	{
1799	if (expect_false (ev_is_active (w)))	2488	if (expect_false (ev_is_active (w)))
1800	return;	2489	return;
1801		2490
1802	/* since we use memcmp, we need to clear any padding data etc. */
1803	memset (&w->prev, 0, sizeof (ev_statdata));
1804	memset (&w->attr, 0, sizeof (ev_statdata));
1805
1806	ev_stat_stat (EV_A_ w);
1807
1808	if (w->interval < MIN_STAT_INTERVAL)
1809	w->interval = w->interval ? MIN_STAT_INTERVAL : DEF_STAT_INTERVAL;
1810
1811	ev_timer_init (&w->timer, stat_timer_cb, w->interval, w->interval);
1812	ev_set_priority (&w->timer, ev_priority (w));
1813	ev_timer_start (EV_A_ &w->timer);
1814
1815	ev_start (EV_A_ (W)w, 1);	2491	ev_start (EV_A_ (W)w, ++forkcnt);
		2492	array_needsize (ev_fork *, forks, forkmax, forkcnt, EMPTY2);
		2493	forks [forkcnt - 1] = w;
1816	}	2494	}
1817		2495
1818	void	2496	void
1819	ev_stat_stop (EV_P_ ev_stat *w)	2497	ev_fork_stop (EV_P_ ev_fork *w)
1820	{	2498	{
1821	ev_clear_pending (EV_A_ (W)w);	2499	clear_pending (EV_A_ (W)w);
1822	if (expect_false (!ev_is_active (w)))	2500	if (expect_false (!ev_is_active (w)))
1823	return;	2501	return;
1824		2502
1825	ev_timer_stop (EV_A_ &w->timer);	2503	{
		2504	int active = ((W)w)->active;
		2505	forks [active - 1] = forks [--forkcnt];
		2506	((W)forks [active - 1])->active = active;
		2507	}
1826		2508
1827	ev_stop (EV_A_ (W)w);	2509	ev_stop (EV_A_ (W)w);
		2510	}
		2511	#endif
		2512
		2513	#if EV_ASYNC_ENABLE
		2514	void
		2515	ev_async_start (EV_P_ ev_async *w)
		2516	{
		2517	if (expect_false (ev_is_active (w)))
		2518	return;
		2519
		2520	evpipe_init (EV_A);
		2521
		2522	ev_start (EV_A_ (W)w, ++asynccnt);
		2523	array_needsize (ev_async *, asyncs, asyncmax, asynccnt, EMPTY2);
		2524	asyncs [asynccnt - 1] = w;
		2525	}
		2526
		2527	void
		2528	ev_async_stop (EV_P_ ev_async *w)
		2529	{
		2530	clear_pending (EV_A_ (W)w);
		2531	if (expect_false (!ev_is_active (w)))
		2532	return;
		2533
		2534	{
		2535	int active = ((W)w)->active;
		2536	asyncs [active - 1] = asyncs [--asynccnt];
		2537	((W)asyncs [active - 1])->active = active;
		2538	}
		2539
		2540	ev_stop (EV_A_ (W)w);
		2541	}
		2542
		2543	void
		2544	ev_async_send (EV_P_ ev_async *w)
		2545	{
		2546	w->sent = 1;
		2547	evpipe_write (EV_A_ &gotasync);
1828	}	2548	}
1829	#endif	2549	#endif
1830		2550
1831	/*****************************************************************************/	2551	/*****************************************************************************/
1832		2552
…		…
1890	ev_timer_set (&once->to, timeout, 0.);	2610	ev_timer_set (&once->to, timeout, 0.);
1891	ev_timer_start (EV_A_ &once->to);	2611	ev_timer_start (EV_A_ &once->to);
1892	}	2612	}
1893	}	2613	}
1894		2614
		2615	#if EV_MULTIPLICITY
		2616	#include "ev_wrap.h"
		2617	#endif
		2618
1895	#ifdef __cplusplus	2619	#ifdef __cplusplus
1896	}	2620	}
1897	#endif	2621	#endif
1898		2622

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