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Comparing libev/ev.c (file contents):
Revision 1.140 by root, Mon Nov 26 19:49:36 2007 UTC vs.
Revision 1.197 by root, Sat Dec 22 15:20:13 2007 UTC

…		…
51	# ifndef EV_USE_MONOTONIC	51	# ifndef EV_USE_MONOTONIC
52	# define EV_USE_MONOTONIC 0	52	# define EV_USE_MONOTONIC 0
53	# endif	53	# endif
54	# ifndef EV_USE_REALTIME	54	# ifndef EV_USE_REALTIME
55	# define EV_USE_REALTIME 0	55	# define EV_USE_REALTIME 0
		56	# endif
		57	# endif
		58
		59	# ifndef EV_USE_NANOSLEEP
		60	# if HAVE_NANOSLEEP
		61	# define EV_USE_NANOSLEEP 1
		62	# else
		63	# define EV_USE_NANOSLEEP 0
56	# endif	64	# endif
57	# endif	65	# endif
58		66
59	# ifndef EV_USE_SELECT	67	# ifndef EV_USE_SELECT
60	# if HAVE_SELECT && HAVE_SYS_SELECT_H	68	# if HAVE_SELECT && HAVE_SYS_SELECT_H
…		…
94	# else	102	# else
95	# define EV_USE_PORT 0	103	# define EV_USE_PORT 0
96	# endif	104	# endif
97	# endif	105	# endif
98		106
		107	# ifndef EV_USE_INOTIFY
		108	# if HAVE_INOTIFY_INIT && HAVE_SYS_INOTIFY_H
		109	# define EV_USE_INOTIFY 1
		110	# else
		111	# define EV_USE_INOTIFY 0
		112	# endif
		113	# endif
		114
99	#endif	115	#endif
100		116
101	#include <math.h>	117	#include <math.h>
102	#include <stdlib.h>	118	#include <stdlib.h>
103	#include <fcntl.h>	119	#include <fcntl.h>
…		…
109	#include <errno.h>	125	#include <errno.h>
110	#include <sys/types.h>	126	#include <sys/types.h>
111	#include <time.h>	127	#include <time.h>
112		128
113	#include <signal.h>	129	#include <signal.h>
		130
		131	#ifdef EV_H
		132	# include EV_H
		133	#else
		134	# include "ev.h"
		135	#endif
114		136
115	#ifndef _WIN32	137	#ifndef _WIN32
116	# include <sys/time.h>	138	# include <sys/time.h>
117	# include <sys/wait.h>	139	# include <sys/wait.h>
118	# include <unistd.h>	140	# include <unistd.h>
…		…
132		154
133	#ifndef EV_USE_REALTIME	155	#ifndef EV_USE_REALTIME
134	# define EV_USE_REALTIME 0	156	# define EV_USE_REALTIME 0
135	#endif	157	#endif
136		158
		159	#ifndef EV_USE_NANOSLEEP
		160	# define EV_USE_NANOSLEEP 0
		161	#endif
		162
137	#ifndef EV_USE_SELECT	163	#ifndef EV_USE_SELECT
138	# define EV_USE_SELECT 1	164	# define EV_USE_SELECT 1
139	#endif	165	#endif
140		166
141	#ifndef EV_USE_POLL	167	#ifndef EV_USE_POLL
…		…
156		182
157	#ifndef EV_USE_PORT	183	#ifndef EV_USE_PORT
158	# define EV_USE_PORT 0	184	# define EV_USE_PORT 0
159	#endif	185	#endif
160		186
		187	#ifndef EV_USE_INOTIFY
		188	# define EV_USE_INOTIFY 0
		189	#endif
		190
		191	#ifndef EV_PID_HASHSIZE
		192	# if EV_MINIMAL
		193	# define EV_PID_HASHSIZE 1
		194	# else
		195	# define EV_PID_HASHSIZE 16
		196	# endif
		197	#endif
		198
		199	#ifndef EV_INOTIFY_HASHSIZE
		200	# if EV_MINIMAL
		201	# define EV_INOTIFY_HASHSIZE 1
		202	# else
		203	# define EV_INOTIFY_HASHSIZE 16
		204	# endif
		205	#endif
		206
161	/**/	207	/**/
162		208
163	#ifndef CLOCK_MONOTONIC	209	#ifndef CLOCK_MONOTONIC
164	# undef EV_USE_MONOTONIC	210	# undef EV_USE_MONOTONIC
165	# define EV_USE_MONOTONIC 0	211	# define EV_USE_MONOTONIC 0
…		…
168	#ifndef CLOCK_REALTIME	214	#ifndef CLOCK_REALTIME
169	# undef EV_USE_REALTIME	215	# undef EV_USE_REALTIME
170	# define EV_USE_REALTIME 0	216	# define EV_USE_REALTIME 0
171	#endif	217	#endif
172		218
		219	#if !EV_STAT_ENABLE
		220	# undef EV_USE_INOTIFY
		221	# define EV_USE_INOTIFY 0
		222	#endif
		223
		224	#if !EV_USE_NANOSLEEP
		225	# ifndef _WIN32
		226	# include <sys/select.h>
		227	# endif
		228	#endif
		229
		230	#if EV_USE_INOTIFY
		231	# include <sys/inotify.h>
		232	#endif
		233
173	#if EV_SELECT_IS_WINSOCKET	234	#if EV_SELECT_IS_WINSOCKET
174	# include <winsock.h>	235	# include <winsock.h>
175	#endif	236	#endif
176		237
177	/**/	238	/**/
178		239
		240	/*
		241	* This is used to avoid floating point rounding problems.
		242	* It is added to ev_rt_now when scheduling periodics
		243	* to ensure progress, time-wise, even when rounding
		244	* errors are against us.
		245	* This value is good at least till the year 4000.
		246	* Better solutions welcome.
		247	*/
		248	#define TIME_EPSILON 0.0001220703125 /* 1/8192 */
		249
179	#define MIN_TIMEJUMP 1. /* minimum timejump that gets detected (if monotonic clock available) */	250	#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) */	251	#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 */	252	/*#define CLEANUP_INTERVAL (MAX_BLOCKTIME * 5.) /* how often to try to free memory and re-check fds, TODO */
183		253
184	#ifdef EV_H
185	# include EV_H
186	#else
187	# include "ev.h"
188	#endif
189
190	#if __GNUC__ >= 3	254	#if __GNUC__ >= 4
191	# define expect(expr,value) __builtin_expect ((expr),(value))	255	# 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))	256	# 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	257	#else
201	# define expect(expr,value) (expr)	258	# define expect(expr,value) (expr)
202	# define inline_speed static
203	# define inline_minimal static
204	# define noinline	259	# define noinline
		260	# if __STDC_VERSION__ < 199901L
		261	# define inline
		262	# endif
205	#endif	263	#endif
206		264
207	#define expect_false(expr) expect ((expr) != 0, 0)	265	#define expect_false(expr) expect ((expr) != 0, 0)
208	#define expect_true(expr) expect ((expr) != 0, 1)	266	#define expect_true(expr) expect ((expr) != 0, 1)
		267	#define inline_size static inline
		268
		269	#if EV_MINIMAL
		270	# define inline_speed static noinline
		271	#else
		272	# define inline_speed static inline
		273	#endif
209		274
210	#define NUMPRI (EV_MAXPRI - EV_MINPRI + 1)	275	#define NUMPRI (EV_MAXPRI - EV_MINPRI + 1)
211	#define ABSPRI(w) ((w)->priority - EV_MINPRI)	276	#define ABSPRI(w) (((W)w)->priority - EV_MINPRI)
212		277
213	#define EMPTY0 /* required for microsofts broken pseudo-c compiler */	278	#define EMPTY /* required for microsofts broken pseudo-c compiler */
214	#define EMPTY2(a,b) /* used to suppress some warnings */	279	#define EMPTY2(a,b) /* used to suppress some warnings */
215		280
216	typedef ev_watcher *W;	281	typedef ev_watcher *W;
217	typedef ev_watcher_list *WL;	282	typedef ev_watcher_list *WL;
218	typedef ev_watcher_time *WT;	283	typedef ev_watcher_time *WT;
219		284
		285	/* sig_atomic_t is used to avoid per-thread variables or locking but still */
		286	/* giving it a reasonably high chance of working on typical architetcures */
220	static int have_monotonic; /* did clock_gettime (CLOCK_MONOTONIC) work? */	287	static sig_atomic_t have_monotonic; /* did clock_gettime (CLOCK_MONOTONIC) work? */
221		288
222	#ifdef _WIN32	289	#ifdef _WIN32
223	# include "ev_win32.c"	290	# include "ev_win32.c"
224	#endif	291	#endif
225		292
226	/*****************************************************************************/	293	/*****************************************************************************/
227		294
228	static void (*syserr_cb)(const char *msg);	295	static void (*syserr_cb)(const char *msg);
229		296
		297	void
230	void ev_set_syserr_cb (void (*cb)(const char *msg))	298	ev_set_syserr_cb (void (*cb)(const char *msg))
231	{	299	{
232	syserr_cb = cb;	300	syserr_cb = cb;
233	}	301	}
234		302
235	static void	303	static void noinline
236	syserr (const char *msg)	304	syserr (const char *msg)
237	{	305	{
238	if (!msg)	306	if (!msg)
239	msg = "(libev) system error";	307	msg = "(libev) system error";
240		308
…		…
247	}	315	}
248	}	316	}
249		317
250	static void *(*alloc)(void *ptr, long size);	318	static void *(*alloc)(void *ptr, long size);
251		319
		320	void
252	void ev_set_allocator (void *(*cb)(void *ptr, long size))	321	ev_set_allocator (void *(*cb)(void *ptr, long size))
253	{	322	{
254	alloc = cb;	323	alloc = cb;
255	}	324	}
256		325
257	static void *	326	inline_speed void *
258	ev_realloc (void *ptr, long size)	327	ev_realloc (void *ptr, long size)
259	{	328	{
260	ptr = alloc ? alloc (ptr, size) : realloc (ptr, size);	329	ptr = alloc ? alloc (ptr, size) : realloc (ptr, size);
261		330
262	if (!ptr && size)	331	if (!ptr && size)
…		…
286	typedef struct	355	typedef struct
287	{	356	{
288	W w;	357	W w;
289	int events;	358	int events;
290	} ANPENDING;	359	} ANPENDING;
		360
		361	#if EV_USE_INOTIFY
		362	typedef struct
		363	{
		364	WL head;
		365	} ANFS;
		366	#endif
291		367
292	#if EV_MULTIPLICITY	368	#if EV_MULTIPLICITY
293		369
294	struct ev_loop	370	struct ev_loop
295	{	371	{
…		…
315		391
316	#endif	392	#endif
317		393
318	/*****************************************************************************/	394	/*****************************************************************************/
319		395
320	ev_tstamp noinline	396	ev_tstamp
321	ev_time (void)	397	ev_time (void)
322	{	398	{
323	#if EV_USE_REALTIME	399	#if EV_USE_REALTIME
324	struct timespec ts;	400	struct timespec ts;
325	clock_gettime (CLOCK_REALTIME, &ts);	401	clock_gettime (CLOCK_REALTIME, &ts);
…		…
352	{	428	{
353	return ev_rt_now;	429	return ev_rt_now;
354	}	430	}
355	#endif	431	#endif
356		432
357	#define array_roundsize(type,n) (((n) | 4) & ~3)	433	void
		434	ev_sleep (ev_tstamp delay)
		435	{
		436	if (delay > 0.)
		437	{
		438	#if EV_USE_NANOSLEEP
		439	struct timespec ts;
		440
		441	ts.tv_sec = (time_t)delay;
		442	ts.tv_nsec = (long)((delay - (ev_tstamp)(ts.tv_sec)) * 1e9);
		443
		444	nanosleep (&ts, 0);
		445	#elif defined(_WIN32)
		446	Sleep (delay * 1e3);
		447	#else
		448	struct timeval tv;
		449
		450	tv.tv_sec = (time_t)delay;
		451	tv.tv_usec = (long)((delay - (ev_tstamp)(tv.tv_sec)) * 1e6);
		452
		453	select (0, 0, 0, 0, &tv);
		454	#endif
		455	}
		456	}
		457
		458	/*****************************************************************************/
		459
		460	int inline_size
		461	array_nextsize (int elem, int cur, int cnt)
		462	{
		463	int ncur = cur + 1;
		464
		465	do
		466	ncur <<= 1;
		467	while (cnt > ncur);
		468
		469	/* if size > 4096, round to 4096 - 4 * longs to accomodate malloc overhead */
		470	if (elem * ncur > 4096)
		471	{
		472	ncur *= elem;
		473	ncur = (ncur + elem + 4095 + sizeof (void *) * 4) & ~4095;
		474	ncur = ncur - sizeof (void *) * 4;
		475	ncur /= elem;
		476	}
		477
		478	return ncur;
		479	}
		480
		481	static noinline void *
		482	array_realloc (int elem, void *base, int *cur, int cnt)
		483	{
		484	*cur = array_nextsize (elem, *cur, cnt);
		485	return ev_realloc (base, elem * *cur);
		486	}
358		487
359	#define array_needsize(type,base,cur,cnt,init) \	488	#define array_needsize(type,base,cur,cnt,init) \
360	if (expect_false ((cnt) > cur)) \	489	if (expect_false ((cnt) > (cur))) \
361	{ \	490	{ \
362	int newcnt = cur; \	491	int ocur_ = (cur); \
363	do \	492	(base) = (type *)array_realloc \
364	{ \	493	(sizeof (type), (base), &(cur), (cnt)); \
365	newcnt = array_roundsize (type, newcnt << 1); \	494	init ((base) + (ocur_), (cur) - ocur_); \
366	} \
367	while ((cnt) > newcnt); \
368	\
369	base = (type *)ev_realloc (base, sizeof (type) * (newcnt));\
370	init (base + cur, newcnt - cur); \
371	cur = newcnt; \
372	}	495	}
373		496
		497	#if 0
374	#define array_slim(type,stem) \	498	#define array_slim(type,stem) \
375	if (stem ## max < array_roundsize (stem ## cnt >> 2)) \	499	if (stem ## max < array_roundsize (stem ## cnt >> 2)) \
376	{ \	500	{ \
377	stem ## max = array_roundsize (stem ## cnt >> 1); \	501	stem ## max = array_roundsize (stem ## cnt >> 1); \
378	base = (type *)ev_realloc (base, sizeof (type) * (stem ## max));\	502	base = (type *)ev_realloc (base, sizeof (type) * (stem ## max));\
379	fprintf (stderr, "slimmed down " # stem " to %d\n", stem ## max);/*D*/\	503	fprintf (stderr, "slimmed down " # stem " to %d\n", stem ## max);/*D*/\
380	}	504	}
		505	#endif
381		506
382	#define array_free(stem, idx) \	507	#define array_free(stem, idx) \
383	ev_free (stem ## s idx); stem ## cnt idx = stem ## max idx = 0;	508	ev_free (stem ## s idx); stem ## cnt idx = stem ## max idx = 0;
		509
		510	/*****************************************************************************/
		511
		512	void noinline
		513	ev_feed_event (EV_P_ void *w, int revents)
		514	{
		515	W w_ = (W)w;
		516	int pri = ABSPRI (w_);
		517
		518	if (expect_false (w_->pending))
		519	pendings [pri][w_->pending - 1].events |= revents;
		520	else
		521	{
		522	w_->pending = ++pendingcnt [pri];
		523	array_needsize (ANPENDING, pendings [pri], pendingmax [pri], w_->pending, EMPTY2);
		524	pendings [pri][w_->pending - 1].w = w_;
		525	pendings [pri][w_->pending - 1].events = revents;
		526	}
		527	}
		528
		529	void inline_speed
		530	queue_events (EV_P_ W *events, int eventcnt, int type)
		531	{
		532	int i;
		533
		534	for (i = 0; i < eventcnt; ++i)
		535	ev_feed_event (EV_A_ events [i], type);
		536	}
384		537
385	/*****************************************************************************/	538	/*****************************************************************************/
386		539
387	void inline_size	540	void inline_size
388	anfds_init (ANFD *base, int count)	541	anfds_init (ANFD *base, int count)
…		…
395		548
396	++base;	549	++base;
397	}	550	}
398	}	551	}
399		552
400	void noinline
401	ev_feed_event (EV_P_ void *w, int revents)
402	{
403	W w_ = (W)w;
404
405	if (expect_false (w_->pending))
406	{
407	pendings [ABSPRI (w_)][w_->pending - 1].events |= revents;
408	return;
409	}
410
411	w_->pending = ++pendingcnt [ABSPRI (w_)];
412	array_needsize (ANPENDING, pendings [ABSPRI (w_)], pendingmax [ABSPRI (w_)], pendingcnt [ABSPRI (w_)], EMPTY2);
413	pendings [ABSPRI (w_)][w_->pending - 1].w = w_;
414	pendings [ABSPRI (w_)][w_->pending - 1].events = revents;
415	}
416
417	static void
418	queue_events (EV_P_ W *events, int eventcnt, int type)
419	{
420	int i;
421
422	for (i = 0; i < eventcnt; ++i)
423	ev_feed_event (EV_A_ events [i], type);
424	}
425
426	void inline_speed	553	void inline_speed
427	fd_event (EV_P_ int fd, int revents)	554	fd_event (EV_P_ int fd, int revents)
428	{	555	{
429	ANFD *anfd = anfds + fd;	556	ANFD *anfd = anfds + fd;
430	ev_io *w;	557	ev_io *w;
…		…
439	}	566	}
440		567
441	void	568	void
442	ev_feed_fd_event (EV_P_ int fd, int revents)	569	ev_feed_fd_event (EV_P_ int fd, int revents)
443	{	570	{
		571	if (fd >= 0 && fd < anfdmax)
444	fd_event (EV_A_ fd, revents);	572	fd_event (EV_A_ fd, revents);
445	}	573	}
446
447	/*****************************************************************************/
448		574
449	void inline_size	575	void inline_size
450	fd_reify (EV_P)	576	fd_reify (EV_P)
451	{	577	{
452	int i;	578	int i;
…		…
455	{	581	{
456	int fd = fdchanges [i];	582	int fd = fdchanges [i];
457	ANFD *anfd = anfds + fd;	583	ANFD *anfd = anfds + fd;
458	ev_io *w;	584	ev_io *w;
459		585
460	int events = 0;	586	unsigned char events = 0;
461		587
462	for (w = (ev_io *)anfd->head; w; w = (ev_io *)((WL)w)->next)	588	for (w = (ev_io *)anfd->head; w; w = (ev_io *)((WL)w)->next)
463	events |= w->events;	589	events |= (unsigned char)w->events;
464		590
465	#if EV_SELECT_IS_WINSOCKET	591	#if EV_SELECT_IS_WINSOCKET
466	if (events)	592	if (events)
467	{	593	{
468	unsigned long argp;	594	unsigned long argp;
469	anfd->handle = _get_osfhandle (fd);	595	anfd->handle = _get_osfhandle (fd);
470	assert (("libev only supports socket fds in this configuration", ioctlsocket (anfd->handle, FIONREAD, &argp) == 0));	596	assert (("libev only supports socket fds in this configuration", ioctlsocket (anfd->handle, FIONREAD, &argp) == 0));
471	}	597	}
472	#endif	598	#endif
473		599
		600	{
		601	unsigned char o_events = anfd->events;
		602	unsigned char o_reify = anfd->reify;
		603
474	anfd->reify = 0;	604	anfd->reify = 0;
475
476	backend_modify (EV_A_ fd, anfd->events, events);
477	anfd->events = events;	605	anfd->events = events;
		606
		607	if (o_events != events || o_reify & EV_IOFDSET)
		608	backend_modify (EV_A_ fd, o_events, events);
		609	}
478	}	610	}
479		611
480	fdchangecnt = 0;	612	fdchangecnt = 0;
481	}	613	}
482		614
483	void inline_size	615	void inline_size
484	fd_change (EV_P_ int fd)	616	fd_change (EV_P_ int fd, int flags)
485	{	617	{
486	if (expect_false (anfds [fd].reify))	618	unsigned char reify = anfds [fd].reify;
487	return;
488
489	anfds [fd].reify = 1;	619	anfds [fd].reify |= flags;
490		620
		621	if (expect_true (!reify))
		622	{
491	++fdchangecnt;	623	++fdchangecnt;
492	array_needsize (int, fdchanges, fdchangemax, fdchangecnt, EMPTY2);	624	array_needsize (int, fdchanges, fdchangemax, fdchangecnt, EMPTY2);
493	fdchanges [fdchangecnt - 1] = fd;	625	fdchanges [fdchangecnt - 1] = fd;
		626	}
494	}	627	}
495		628
496	void inline_speed	629	void inline_speed
497	fd_kill (EV_P_ int fd)	630	fd_kill (EV_P_ int fd)
498	{	631	{
…		…
545	static void noinline	678	static void noinline
546	fd_rearm_all (EV_P)	679	fd_rearm_all (EV_P)
547	{	680	{
548	int fd;	681	int fd;
549		682
550	/* this should be highly optimised to not do anything but set a flag */
551	for (fd = 0; fd < anfdmax; ++fd)	683	for (fd = 0; fd < anfdmax; ++fd)
552	if (anfds [fd].events)	684	if (anfds [fd].events)
553	{	685	{
554	anfds [fd].events = 0;	686	anfds [fd].events = 0;
555	fd_change (EV_A_ fd);	687	fd_change (EV_A_ fd, EV_IOFDSET | 1);
556	}	688	}
557	}	689	}
558		690
559	/*****************************************************************************/	691	/*****************************************************************************/
560		692
561	void inline_speed	693	void inline_speed
562	upheap (WT *heap, int k)	694	upheap (WT *heap, int k)
563	{	695	{
564	WT w = heap [k];	696	WT w = heap [k];
565		697
566	while (k && heap [k >> 1]->at > w->at)	698	while (k)
567	{	699	{
		700	int p = (k - 1) >> 1;
		701
		702	if (heap [p]->at <= w->at)
		703	break;
		704
568	heap [k] = heap [k >> 1];	705	heap [k] = heap [p];
569	((W)heap [k])->active = k + 1;	706	((W)heap [k])->active = k + 1;
570	k >>= 1;	707	k = p;
571	}	708	}
572		709
573	heap [k] = w;	710	heap [k] = w;
574	((W)heap [k])->active = k + 1;	711	((W)heap [k])->active = k + 1;
575
576	}	712	}
577		713
578	void inline_speed	714	void inline_speed
579	downheap (WT *heap, int N, int k)	715	downheap (WT *heap, int N, int k)
580	{	716	{
581	WT w = heap [k];	717	WT w = heap [k];
582		718
583	while (k < (N >> 1))	719	for (;;)
584	{	720	{
585	int j = k << 1;	721	int c = (k << 1) + 1;
586		722
587	if (j + 1 < N && heap [j]->at > heap [j + 1]->at)	723	if (c >= N)
588	++j;
589
590	if (w->at <= heap [j]->at)
591	break;	724	break;
592		725
		726	c += c + 1 < N && heap [c]->at > heap [c + 1]->at
		727	? 1 : 0;
		728
		729	if (w->at <= heap [c]->at)
		730	break;
		731
593	heap [k] = heap [j];	732	heap [k] = heap [c];
594	((W)heap [k])->active = k + 1;	733	((W)heap [k])->active = k + 1;
		734
595	k = j;	735	k = c;
596	}	736	}
597		737
598	heap [k] = w;	738	heap [k] = w;
599	((W)heap [k])->active = k + 1;	739	((W)heap [k])->active = k + 1;
600	}	740	}
…		…
682	for (signum = signalmax; signum--; )	822	for (signum = signalmax; signum--; )
683	if (signals [signum].gotsig)	823	if (signals [signum].gotsig)
684	ev_feed_signal_event (EV_A_ signum + 1);	824	ev_feed_signal_event (EV_A_ signum + 1);
685	}	825	}
686		826
687	void inline_size	827	void inline_speed
688	fd_intern (int fd)	828	fd_intern (int fd)
689	{	829	{
690	#ifdef _WIN32	830	#ifdef _WIN32
691	int arg = 1;	831	int arg = 1;
692	ioctlsocket (_get_osfhandle (fd), FIONBIO, &arg);	832	ioctlsocket (_get_osfhandle (fd), FIONBIO, &arg);
…		…
707	ev_unref (EV_A); /* child watcher should not keep loop alive */	847	ev_unref (EV_A); /* child watcher should not keep loop alive */
708	}	848	}
709		849
710	/*****************************************************************************/	850	/*****************************************************************************/
711		851
712	static ev_child *childs [PID_HASHSIZE];	852	static WL childs [EV_PID_HASHSIZE];
713		853
714	#ifndef _WIN32	854	#ifndef _WIN32
715		855
716	static ev_signal childev;	856	static ev_signal childev;
		857
		858	void inline_speed
		859	child_reap (EV_P_ ev_signal *sw, int chain, int pid, int status)
		860	{
		861	ev_child *w;
		862
		863	for (w = (ev_child *)childs [chain & (EV_PID_HASHSIZE - 1)]; w; w = (ev_child *)((WL)w)->next)
		864	if (w->pid == pid || !w->pid)
		865	{
		866	ev_set_priority (w, ev_priority (sw)); /* need to do it *now* */
		867	w->rpid = pid;
		868	w->rstatus = status;
		869	ev_feed_event (EV_A_ (W)w, EV_CHILD);
		870	}
		871	}
717		872
718	#ifndef WCONTINUED	873	#ifndef WCONTINUED
719	# define WCONTINUED 0	874	# define WCONTINUED 0
720	#endif	875	#endif
721		876
722	void inline_speed
723	child_reap (EV_P_ ev_signal *sw, int chain, int pid, int status)
724	{
725	ev_child *w;
726
727	for (w = (ev_child *)childs [chain & (PID_HASHSIZE - 1)]; w; w = (ev_child *)((WL)w)->next)
728	if (w->pid == pid || !w->pid)
729	{
730	ev_priority (w) = ev_priority (sw); /* need to do it *now* */
731	w->rpid = pid;
732	w->rstatus = status;
733	ev_feed_event (EV_A_ (W)w, EV_CHILD);
734	}
735	}
736
737	static void	877	static void
738	childcb (EV_P_ ev_signal *sw, int revents)	878	childcb (EV_P_ ev_signal *sw, int revents)
739	{	879	{
740	int pid, status;	880	int pid, status;
741		881
		882	/* some systems define WCONTINUED but then fail to support it (linux 2.4) */
742	if (0 < (pid = waitpid (-1, &status, WNOHANG | WUNTRACED | WCONTINUED)))	883	if (0 >= (pid = waitpid (-1, &status, WNOHANG | WUNTRACED | WCONTINUED)))
743	{	884	if (!WCONTINUED
		885	|| errno != EINVAL
		886	|| 0 >= (pid = waitpid (-1, &status, WNOHANG | WUNTRACED)))
		887	return;
		888
744	/* make sure we are called again until all childs have been reaped */	889	/* make sure we are called again until all childs have been reaped */
745	/* we need to do it this way so that the callback gets called before we continue */	890	/* we need to do it this way so that the callback gets called before we continue */
746	ev_feed_event (EV_A_ (W)sw, EV_SIGNAL);	891	ev_feed_event (EV_A_ (W)sw, EV_SIGNAL);
747		892
748	child_reap (EV_A_ sw, pid, pid, status);	893	child_reap (EV_A_ sw, pid, pid, status);
		894	if (EV_PID_HASHSIZE > 1)
749	child_reap (EV_A_ sw, 0, pid, status); /* this might trigger a watcher twice, but feed_event catches that */	895	child_reap (EV_A_ sw, 0, pid, status); /* this might trigger a watcher twice, but feed_event catches that */
750	}
751	}	896	}
752		897
753	#endif	898	#endif
754		899
755	/*****************************************************************************/	900	/*****************************************************************************/
…		…
827	}	972	}
828		973
829	unsigned int	974	unsigned int
830	ev_embeddable_backends (void)	975	ev_embeddable_backends (void)
831	{	976	{
832	return EVBACKEND_EPOLL	977	int flags = EVBACKEND_EPOLL | EVBACKEND_KQUEUE | EVBACKEND_PORT;
833	| EVBACKEND_KQUEUE	978
834	| EVBACKEND_PORT;	979	/* epoll embeddability broken on all linux versions up to at least 2.6.23 */
		980	/* please fix it and tell me how to detect the fix */
		981	flags &= ~EVBACKEND_EPOLL;
		982
		983	return flags;
835	}	984	}
836		985
837	unsigned int	986	unsigned int
838	ev_backend (EV_P)	987	ev_backend (EV_P)
839	{	988	{
840	return backend;	989	return backend;
841	}	990	}
842		991
843	static void	992	unsigned int
		993	ev_loop_count (EV_P)
		994	{
		995	return loop_count;
		996	}
		997
		998	void
		999	ev_set_io_collect_interval (EV_P_ ev_tstamp interval)
		1000	{
		1001	io_blocktime = interval;
		1002	}
		1003
		1004	void
		1005	ev_set_timeout_collect_interval (EV_P_ ev_tstamp interval)
		1006	{
		1007	timeout_blocktime = interval;
		1008	}
		1009
		1010	static void noinline
844	loop_init (EV_P_ unsigned int flags)	1011	loop_init (EV_P_ unsigned int flags)
845	{	1012	{
846	if (!backend)	1013	if (!backend)
847	{	1014	{
848	#if EV_USE_MONOTONIC	1015	#if EV_USE_MONOTONIC
…		…
856	ev_rt_now = ev_time ();	1023	ev_rt_now = ev_time ();
857	mn_now = get_clock ();	1024	mn_now = get_clock ();
858	now_floor = mn_now;	1025	now_floor = mn_now;
859	rtmn_diff = ev_rt_now - mn_now;	1026	rtmn_diff = ev_rt_now - mn_now;
860		1027
		1028	io_blocktime = 0.;
		1029	timeout_blocktime = 0.;
		1030
		1031	/* pid check not overridable via env */
		1032	#ifndef _WIN32
		1033	if (flags & EVFLAG_FORKCHECK)
		1034	curpid = getpid ();
		1035	#endif
		1036
861	if (!(flags & EVFLAG_NOENV)	1037	if (!(flags & EVFLAG_NOENV)
862	&& !enable_secure ()	1038	&& !enable_secure ()
863	&& getenv ("LIBEV_FLAGS"))	1039	&& getenv ("LIBEV_FLAGS"))
864	flags = atoi (getenv ("LIBEV_FLAGS"));	1040	flags = atoi (getenv ("LIBEV_FLAGS"));
865		1041
866	if (!(flags & 0x0000ffffUL))	1042	if (!(flags & 0x0000ffffUL))
867	flags |= ev_recommended_backends ();	1043	flags |= ev_recommended_backends ();
868		1044
869	backend = 0;	1045	backend = 0;
		1046	backend_fd = -1;
		1047	#if EV_USE_INOTIFY
		1048	fs_fd = -2;
		1049	#endif
		1050
870	#if EV_USE_PORT	1051	#if EV_USE_PORT
871	if (!backend && (flags & EVBACKEND_PORT )) backend = port_init (EV_A_ flags);	1052	if (!backend && (flags & EVBACKEND_PORT )) backend = port_init (EV_A_ flags);
872	#endif	1053	#endif
873	#if EV_USE_KQUEUE	1054	#if EV_USE_KQUEUE
874	if (!backend && (flags & EVBACKEND_KQUEUE)) backend = kqueue_init (EV_A_ flags);	1055	if (!backend && (flags & EVBACKEND_KQUEUE)) backend = kqueue_init (EV_A_ flags);
…		…
886	ev_init (&sigev, sigcb);	1067	ev_init (&sigev, sigcb);
887	ev_set_priority (&sigev, EV_MAXPRI);	1068	ev_set_priority (&sigev, EV_MAXPRI);
888	}	1069	}
889	}	1070	}
890		1071
891	static void	1072	static void noinline
892	loop_destroy (EV_P)	1073	loop_destroy (EV_P)
893	{	1074	{
894	int i;	1075	int i;
		1076
		1077	#if EV_USE_INOTIFY
		1078	if (fs_fd >= 0)
		1079	close (fs_fd);
		1080	#endif
		1081
		1082	if (backend_fd >= 0)
		1083	close (backend_fd);
895		1084
896	#if EV_USE_PORT	1085	#if EV_USE_PORT
897	if (backend == EVBACKEND_PORT ) port_destroy (EV_A);	1086	if (backend == EVBACKEND_PORT ) port_destroy (EV_A);
898	#endif	1087	#endif
899	#if EV_USE_KQUEUE	1088	#if EV_USE_KQUEUE
…		…
908	#if EV_USE_SELECT	1097	#if EV_USE_SELECT
909	if (backend == EVBACKEND_SELECT) select_destroy (EV_A);	1098	if (backend == EVBACKEND_SELECT) select_destroy (EV_A);
910	#endif	1099	#endif
911		1100
912	for (i = NUMPRI; i--; )	1101	for (i = NUMPRI; i--; )
		1102	{
913	array_free (pending, [i]);	1103	array_free (pending, [i]);
		1104	#if EV_IDLE_ENABLE
		1105	array_free (idle, [i]);
		1106	#endif
		1107	}
		1108
		1109	ev_free (anfds); anfdmax = 0;
914		1110
915	/* have to use the microsoft-never-gets-it-right macro */	1111	/* have to use the microsoft-never-gets-it-right macro */
916	array_free (fdchange, EMPTY0);	1112	array_free (fdchange, EMPTY);
917	array_free (timer, EMPTY0);	1113	array_free (timer, EMPTY);
918	#if EV_PERIODIC_ENABLE	1114	#if EV_PERIODIC_ENABLE
919	array_free (periodic, EMPTY0);	1115	array_free (periodic, EMPTY);
920	#endif	1116	#endif
		1117	#if EV_FORK_ENABLE
921	array_free (idle, EMPTY0);	1118	array_free (fork, EMPTY);
		1119	#endif
922	array_free (prepare, EMPTY0);	1120	array_free (prepare, EMPTY);
923	array_free (check, EMPTY0);	1121	array_free (check, EMPTY);
924		1122
925	backend = 0;	1123	backend = 0;
926	}	1124	}
927		1125
928	static void	1126	void inline_size infy_fork (EV_P);
		1127
		1128	void inline_size
929	loop_fork (EV_P)	1129	loop_fork (EV_P)
930	{	1130	{
931	#if EV_USE_PORT	1131	#if EV_USE_PORT
932	if (backend == EVBACKEND_PORT ) port_fork (EV_A);	1132	if (backend == EVBACKEND_PORT ) port_fork (EV_A);
933	#endif	1133	#endif
934	#if EV_USE_KQUEUE	1134	#if EV_USE_KQUEUE
935	if (backend == EVBACKEND_KQUEUE) kqueue_fork (EV_A);	1135	if (backend == EVBACKEND_KQUEUE) kqueue_fork (EV_A);
936	#endif	1136	#endif
937	#if EV_USE_EPOLL	1137	#if EV_USE_EPOLL
938	if (backend == EVBACKEND_EPOLL ) epoll_fork (EV_A);	1138	if (backend == EVBACKEND_EPOLL ) epoll_fork (EV_A);
		1139	#endif
		1140	#if EV_USE_INOTIFY
		1141	infy_fork (EV_A);
939	#endif	1142	#endif
940		1143
941	if (ev_is_active (&sigev))	1144	if (ev_is_active (&sigev))
942	{	1145	{
943	/* default loop */	1146	/* default loop */
…		…
1059	postfork = 1;	1262	postfork = 1;
1060	}	1263	}
1061		1264
1062	/*****************************************************************************/	1265	/*****************************************************************************/
1063		1266
1064	int inline_size	1267	void
1065	any_pending (EV_P)	1268	ev_invoke (EV_P_ void *w, int revents)
1066	{	1269	{
1067	int pri;	1270	EV_CB_INVOKE ((W)w, revents);
1068
1069	for (pri = NUMPRI; pri--; )
1070	if (pendingcnt [pri])
1071	return 1;
1072
1073	return 0;
1074	}	1271	}
1075		1272
1076	void inline_speed	1273	void inline_speed
1077	call_pending (EV_P)	1274	call_pending (EV_P)
1078	{	1275	{
…		…
1083	{	1280	{
1084	ANPENDING *p = pendings [pri] + --pendingcnt [pri];	1281	ANPENDING *p = pendings [pri] + --pendingcnt [pri];
1085		1282
1086	if (expect_true (p->w))	1283	if (expect_true (p->w))
1087	{	1284	{
1088	assert (("non-pending watcher on pending list", p->w->pending));	1285	/*assert (("non-pending watcher on pending list", p->w->pending));*/
1089		1286
1090	p->w->pending = 0;	1287	p->w->pending = 0;
1091	EV_CB_INVOKE (p->w, p->events);	1288	EV_CB_INVOKE (p->w, p->events);
1092	}	1289	}
1093	}	1290	}
…		…
1096	void inline_size	1293	void inline_size
1097	timers_reify (EV_P)	1294	timers_reify (EV_P)
1098	{	1295	{
1099	while (timercnt && ((WT)timers [0])->at <= mn_now)	1296	while (timercnt && ((WT)timers [0])->at <= mn_now)
1100	{	1297	{
1101	ev_timer *w = timers [0];	1298	ev_timer *w = (ev_timer *)timers [0];
1102		1299
1103	assert (("inactive timer on timer heap detected", ev_is_active (w)));	1300	/*assert (("inactive timer on timer heap detected", ev_is_active (w)));*/
1104		1301
1105	/* first reschedule or stop timer */	1302	/* first reschedule or stop timer */
1106	if (w->repeat)	1303	if (w->repeat)
1107	{	1304	{
1108	assert (("negative ev_timer repeat value found while processing timers", w->repeat > 0.));	1305	assert (("negative ev_timer repeat value found while processing timers", w->repeat > 0.));
1109		1306
1110	((WT)w)->at += w->repeat;	1307	((WT)w)->at += w->repeat;
1111	if (((WT)w)->at < mn_now)	1308	if (((WT)w)->at < mn_now)
1112	((WT)w)->at = mn_now;	1309	((WT)w)->at = mn_now;
1113		1310
1114	downheap ((WT *)timers, timercnt, 0);	1311	downheap (timers, timercnt, 0);
1115	}	1312	}
1116	else	1313	else
1117	ev_timer_stop (EV_A_ w); /* nonrepeating: stop timer */	1314	ev_timer_stop (EV_A_ w); /* nonrepeating: stop timer */
1118		1315
1119	ev_feed_event (EV_A_ (W)w, EV_TIMEOUT);	1316	ev_feed_event (EV_A_ (W)w, EV_TIMEOUT);
…		…
1124	void inline_size	1321	void inline_size
1125	periodics_reify (EV_P)	1322	periodics_reify (EV_P)
1126	{	1323	{
1127	while (periodiccnt && ((WT)periodics [0])->at <= ev_rt_now)	1324	while (periodiccnt && ((WT)periodics [0])->at <= ev_rt_now)
1128	{	1325	{
1129	ev_periodic *w = periodics [0];	1326	ev_periodic *w = (ev_periodic *)periodics [0];
1130		1327
1131	assert (("inactive timer on periodic heap detected", ev_is_active (w)));	1328	/*assert (("inactive timer on periodic heap detected", ev_is_active (w)));*/
1132		1329
1133	/* first reschedule or stop timer */	1330	/* first reschedule or stop timer */
1134	if (w->reschedule_cb)	1331	if (w->reschedule_cb)
1135	{	1332	{
1136	((WT)w)->at = w->reschedule_cb (w, ev_rt_now + 0.0001);	1333	((WT)w)->at = w->reschedule_cb (w, ev_rt_now + TIME_EPSILON);
1137	assert (("ev_periodic reschedule callback returned time in the past", ((WT)w)->at > ev_rt_now));	1334	assert (("ev_periodic reschedule callback returned time in the past", ((WT)w)->at > ev_rt_now));
1138	downheap ((WT *)periodics, periodiccnt, 0);	1335	downheap (periodics, periodiccnt, 0);
1139	}	1336	}
1140	else if (w->interval)	1337	else if (w->interval)
1141	{	1338	{
1142	((WT)w)->at += floor ((ev_rt_now - ((WT)w)->at) / w->interval + 1.) * w->interval;	1339	((WT)w)->at = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval;
		1340	if (((WT)w)->at - ev_rt_now <= TIME_EPSILON) ((WT)w)->at += w->interval;
1143	assert (("ev_periodic timeout in the past detected while processing timers, negative interval?", ((WT)w)->at > ev_rt_now));	1341	assert (("ev_periodic timeout in the past detected while processing timers, negative interval?", ((WT)w)->at > ev_rt_now));
1144	downheap ((WT *)periodics, periodiccnt, 0);	1342	downheap (periodics, periodiccnt, 0);
1145	}	1343	}
1146	else	1344	else
1147	ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */	1345	ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */
1148		1346
1149	ev_feed_event (EV_A_ (W)w, EV_PERIODIC);	1347	ev_feed_event (EV_A_ (W)w, EV_PERIODIC);
…		…
1156	int i;	1354	int i;
1157		1355
1158	/* adjust periodics after time jump */	1356	/* adjust periodics after time jump */
1159	for (i = 0; i < periodiccnt; ++i)	1357	for (i = 0; i < periodiccnt; ++i)
1160	{	1358	{
1161	ev_periodic *w = periodics [i];	1359	ev_periodic *w = (ev_periodic *)periodics [i];
1162		1360
1163	if (w->reschedule_cb)	1361	if (w->reschedule_cb)
1164	((WT)w)->at = w->reschedule_cb (w, ev_rt_now);	1362	((WT)w)->at = w->reschedule_cb (w, ev_rt_now);
1165	else if (w->interval)	1363	else if (w->interval)
1166	((WT)w)->at += ceil ((ev_rt_now - ((WT)w)->at) / w->interval) * w->interval;	1364	((WT)w)->at = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval;
1167	}	1365	}
1168		1366
1169	/* now rebuild the heap */	1367	/* now rebuild the heap */
1170	for (i = periodiccnt >> 1; i--; )	1368	for (i = periodiccnt >> 1; i--; )
1171	downheap ((WT *)periodics, periodiccnt, i);	1369	downheap (periodics, periodiccnt, i);
1172	}	1370	}
1173	#endif	1371	#endif
1174		1372
		1373	#if EV_IDLE_ENABLE
1175	int inline_size	1374	void inline_size
1176	time_update_monotonic (EV_P)	1375	idle_reify (EV_P)
1177	{	1376	{
		1377	if (expect_false (idleall))
		1378	{
		1379	int pri;
		1380
		1381	for (pri = NUMPRI; pri--; )
		1382	{
		1383	if (pendingcnt [pri])
		1384	break;
		1385
		1386	if (idlecnt [pri])
		1387	{
		1388	queue_events (EV_A_ (W *)idles [pri], idlecnt [pri], EV_IDLE);
		1389	break;
		1390	}
		1391	}
		1392	}
		1393	}
		1394	#endif
		1395
		1396	void inline_speed
		1397	time_update (EV_P_ ev_tstamp max_block)
		1398	{
		1399	int i;
		1400
		1401	#if EV_USE_MONOTONIC
		1402	if (expect_true (have_monotonic))
		1403	{
		1404	ev_tstamp odiff = rtmn_diff;
		1405
1178	mn_now = get_clock ();	1406	mn_now = get_clock ();
1179		1407
		1408	/* only fetch the realtime clock every 0.5*MIN_TIMEJUMP seconds */
		1409	/* interpolate in the meantime */
1180	if (expect_true (mn_now - now_floor < MIN_TIMEJUMP * .5))	1410	if (expect_true (mn_now - now_floor < MIN_TIMEJUMP * .5))
1181	{	1411	{
1182	ev_rt_now = rtmn_diff + mn_now;	1412	ev_rt_now = rtmn_diff + mn_now;
1183	return 0;	1413	return;
1184	}	1414	}
1185	else	1415
1186	{
1187	now_floor = mn_now;	1416	now_floor = mn_now;
1188	ev_rt_now = ev_time ();	1417	ev_rt_now = ev_time ();
1189	return 1;
1190	}
1191	}
1192		1418
1193	void inline_size	1419	/* loop a few times, before making important decisions.
1194	time_update (EV_P)	1420	* on the choice of "4": one iteration isn't enough,
1195	{	1421	* in case we get preempted during the calls to
1196	int i;	1422	* ev_time and get_clock. a second call is almost guaranteed
1197		1423	* to succeed in that case, though. and looping a few more times
1198	#if EV_USE_MONOTONIC	1424	* doesn't hurt either as we only do this on time-jumps or
1199	if (expect_true (have_monotonic))	1425	* in the unlikely event of having been preempted here.
1200	{	1426	*/
1201	if (time_update_monotonic (EV_A))	1427	for (i = 4; --i; )
1202	{	1428	{
1203	ev_tstamp odiff = rtmn_diff;
1204
1205	/* loop a few times, before making important decisions.
1206	* on the choice of "4": one iteration isn't enough,
1207	* in case we get preempted during the calls to
1208	* ev_time and get_clock. a second call is almost guarenteed
1209	* to succeed in that case, though. and looping a few more times
1210	* doesn't hurt either as we only do this on time-jumps or
1211	* in the unlikely event of getting preempted here.
1212	*/
1213	for (i = 4; --i; )
1214	{
1215	rtmn_diff = ev_rt_now - mn_now;	1429	rtmn_diff = ev_rt_now - mn_now;
1216		1430
1217	if (fabs (odiff - rtmn_diff) < MIN_TIMEJUMP)	1431	if (fabs (odiff - rtmn_diff) < MIN_TIMEJUMP)
1218	return; /* all is well */	1432	return; /* all is well */
1219		1433
1220	ev_rt_now = ev_time ();	1434	ev_rt_now = ev_time ();
1221	mn_now = get_clock ();	1435	mn_now = get_clock ();
1222	now_floor = mn_now;	1436	now_floor = mn_now;
1223	}	1437	}
1224		1438
1225	# if EV_PERIODIC_ENABLE	1439	# if EV_PERIODIC_ENABLE
1226	periodics_reschedule (EV_A);	1440	periodics_reschedule (EV_A);
1227	# endif	1441	# endif
1228	/* no timer adjustment, as the monotonic clock doesn't jump */	1442	/* no timer adjustment, as the monotonic clock doesn't jump */
1229	/* timers_reschedule (EV_A_ rtmn_diff - odiff) */	1443	/* timers_reschedule (EV_A_ rtmn_diff - odiff) */
1230	}
1231	}	1444	}
1232	else	1445	else
1233	#endif	1446	#endif
1234	{	1447	{
1235	ev_rt_now = ev_time ();	1448	ev_rt_now = ev_time ();
1236		1449
1237	if (expect_false (mn_now > ev_rt_now || mn_now < ev_rt_now - MAX_BLOCKTIME - MIN_TIMEJUMP))	1450	if (expect_false (mn_now > ev_rt_now || ev_rt_now > mn_now + max_block + MIN_TIMEJUMP))
1238	{	1451	{
1239	#if EV_PERIODIC_ENABLE	1452	#if EV_PERIODIC_ENABLE
1240	periodics_reschedule (EV_A);	1453	periodics_reschedule (EV_A);
1241	#endif	1454	#endif
1242
1243	/* adjust timers. this is easy, as the offset is the same for all */	1455	/* adjust timers. this is easy, as the offset is the same for all of them */
1244	for (i = 0; i < timercnt; ++i)	1456	for (i = 0; i < timercnt; ++i)
1245	((WT)timers [i])->at += ev_rt_now - mn_now;	1457	((WT)timers [i])->at += ev_rt_now - mn_now;
1246	}	1458	}
1247		1459
1248	mn_now = ev_rt_now;	1460	mn_now = ev_rt_now;
…		…
1268	{	1480	{
1269	loop_done = flags & (EVLOOP_ONESHOT | EVLOOP_NONBLOCK)	1481	loop_done = flags & (EVLOOP_ONESHOT | EVLOOP_NONBLOCK)
1270	? EVUNLOOP_ONE	1482	? EVUNLOOP_ONE
1271	: EVUNLOOP_CANCEL;	1483	: EVUNLOOP_CANCEL;
1272		1484
1273	while (activecnt)	1485	call_pending (EV_A); /* in case we recurse, ensure ordering stays nice and clean */
		1486
		1487	do
1274	{	1488	{
		1489	#ifndef _WIN32
		1490	if (expect_false (curpid)) /* penalise the forking check even more */
		1491	if (expect_false (getpid () != curpid))
		1492	{
		1493	curpid = getpid ();
		1494	postfork = 1;
		1495	}
		1496	#endif
		1497
		1498	#if EV_FORK_ENABLE
		1499	/* we might have forked, so queue fork handlers */
		1500	if (expect_false (postfork))
		1501	if (forkcnt)
		1502	{
		1503	queue_events (EV_A_ (W *)forks, forkcnt, EV_FORK);
		1504	call_pending (EV_A);
		1505	}
		1506	#endif
		1507
1275	/* queue check watchers (and execute them) */	1508	/* queue prepare watchers (and execute them) */
1276	if (expect_false (preparecnt))	1509	if (expect_false (preparecnt))
1277	{	1510	{
1278	queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE);	1511	queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE);
1279	call_pending (EV_A);	1512	call_pending (EV_A);
1280	}	1513	}
1281		1514
		1515	if (expect_false (!activecnt))
		1516	break;
		1517
1282	/* we might have forked, so reify kernel state if necessary */	1518	/* we might have forked, so reify kernel state if necessary */
1283	if (expect_false (postfork))	1519	if (expect_false (postfork))
1284	loop_fork (EV_A);	1520	loop_fork (EV_A);
1285		1521
1286	/* update fd-related kernel structures */	1522	/* update fd-related kernel structures */
1287	fd_reify (EV_A);	1523	fd_reify (EV_A);
1288		1524
1289	/* calculate blocking time */	1525	/* calculate blocking time */
1290	{	1526	{
1291	double block;	1527	ev_tstamp waittime = 0.;
		1528	ev_tstamp sleeptime = 0.;
1292		1529
1293	if (flags & EVLOOP_NONBLOCK || idlecnt)	1530	if (expect_true (!(flags & EVLOOP_NONBLOCK || idleall || !activecnt)))
1294	block = 0.; /* do not block at all */
1295	else
1296	{	1531	{
1297	/* update time to cancel out callback processing overhead */	1532	/* update time to cancel out callback processing overhead */
1298	#if EV_USE_MONOTONIC
1299	if (expect_true (have_monotonic))
1300	time_update_monotonic (EV_A);	1533	time_update (EV_A_ 1e100);
1301	else
1302	#endif
1303	{
1304	ev_rt_now = ev_time ();
1305	mn_now = ev_rt_now;
1306	}
1307		1534
1308	block = MAX_BLOCKTIME;	1535	waittime = MAX_BLOCKTIME;
1309		1536
1310	if (timercnt)	1537	if (timercnt)
1311	{	1538	{
1312	ev_tstamp to = ((WT)timers [0])->at - mn_now + backend_fudge;	1539	ev_tstamp to = ((WT)timers [0])->at - mn_now + backend_fudge;
1313	if (block > to) block = to;	1540	if (waittime > to) waittime = to;
1314	}	1541	}
1315		1542
1316	#if EV_PERIODIC_ENABLE	1543	#if EV_PERIODIC_ENABLE
1317	if (periodiccnt)	1544	if (periodiccnt)
1318	{	1545	{
1319	ev_tstamp to = ((WT)periodics [0])->at - ev_rt_now + backend_fudge;	1546	ev_tstamp to = ((WT)periodics [0])->at - ev_rt_now + backend_fudge;
1320	if (block > to) block = to;	1547	if (waittime > to) waittime = to;
1321	}	1548	}
1322	#endif	1549	#endif
1323		1550
1324	if (expect_false (block < 0.)) block = 0.;	1551	if (expect_false (waittime < timeout_blocktime))
		1552	waittime = timeout_blocktime;
		1553
		1554	sleeptime = waittime - backend_fudge;
		1555
		1556	if (expect_true (sleeptime > io_blocktime))
		1557	sleeptime = io_blocktime;
		1558
		1559	if (sleeptime)
		1560	{
		1561	ev_sleep (sleeptime);
		1562	waittime -= sleeptime;
		1563	}
1325	}	1564	}
1326		1565
		1566	++loop_count;
1327	backend_poll (EV_A_ block);	1567	backend_poll (EV_A_ waittime);
		1568
		1569	/* update ev_rt_now, do magic */
		1570	time_update (EV_A_ waittime + sleeptime);
1328	}	1571	}
1329
1330	/* update ev_rt_now, do magic */
1331	time_update (EV_A);
1332		1572
1333	/* queue pending timers and reschedule them */	1573	/* queue pending timers and reschedule them */
1334	timers_reify (EV_A); /* relative timers called last */	1574	timers_reify (EV_A); /* relative timers called last */
1335	#if EV_PERIODIC_ENABLE	1575	#if EV_PERIODIC_ENABLE
1336	periodics_reify (EV_A); /* absolute timers called first */	1576	periodics_reify (EV_A); /* absolute timers called first */
1337	#endif	1577	#endif
1338		1578
		1579	#if EV_IDLE_ENABLE
1339	/* queue idle watchers unless other events are pending */	1580	/* queue idle watchers unless other events are pending */
1340	if (idlecnt && !any_pending (EV_A))	1581	idle_reify (EV_A);
1341	queue_events (EV_A_ (W *)idles, idlecnt, EV_IDLE);	1582	#endif
1342		1583
1343	/* queue check watchers, to be executed first */	1584	/* queue check watchers, to be executed first */
1344	if (expect_false (checkcnt))	1585	if (expect_false (checkcnt))
1345	queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK);	1586	queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK);
1346		1587
1347	call_pending (EV_A);	1588	call_pending (EV_A);
1348		1589
1349	if (expect_false (loop_done))
1350	break;
1351	}	1590	}
		1591	while (expect_true (activecnt && !loop_done));
1352		1592
1353	if (loop_done == EVUNLOOP_ONE)	1593	if (loop_done == EVUNLOOP_ONE)
1354	loop_done = EVUNLOOP_CANCEL;	1594	loop_done = EVUNLOOP_CANCEL;
1355	}	1595	}
1356		1596
…		…
1383	head = &(*head)->next;	1623	head = &(*head)->next;
1384	}	1624	}
1385	}	1625	}
1386		1626
1387	void inline_speed	1627	void inline_speed
1388	ev_clear_pending (EV_P_ W w)	1628	clear_pending (EV_P_ W w)
1389	{	1629	{
1390	if (w->pending)	1630	if (w->pending)
1391	{	1631	{
1392	pendings [ABSPRI (w)][w->pending - 1].w = 0;	1632	pendings [ABSPRI (w)][w->pending - 1].w = 0;
1393	w->pending = 0;	1633	w->pending = 0;
1394	}	1634	}
1395	}	1635	}
1396		1636
		1637	int
		1638	ev_clear_pending (EV_P_ void *w)
		1639	{
		1640	W w_ = (W)w;
		1641	int pending = w_->pending;
		1642
		1643	if (expect_true (pending))
		1644	{
		1645	ANPENDING *p = pendings [ABSPRI (w_)] + pending - 1;
		1646	w_->pending = 0;
		1647	p->w = 0;
		1648	return p->events;
		1649	}
		1650	else
		1651	return 0;
		1652	}
		1653
		1654	void inline_size
		1655	pri_adjust (EV_P_ W w)
		1656	{
		1657	int pri = w->priority;
		1658	pri = pri < EV_MINPRI ? EV_MINPRI : pri;
		1659	pri = pri > EV_MAXPRI ? EV_MAXPRI : pri;
		1660	w->priority = pri;
		1661	}
		1662
1397	void inline_speed	1663	void inline_speed
1398	ev_start (EV_P_ W w, int active)	1664	ev_start (EV_P_ W w, int active)
1399	{	1665	{
1400	if (w->priority < EV_MINPRI) w->priority = EV_MINPRI;	1666	pri_adjust (EV_A_ w);
1401	if (w->priority > EV_MAXPRI) w->priority = EV_MAXPRI;
1402
1403	w->active = active;	1667	w->active = active;
1404	ev_ref (EV_A);	1668	ev_ref (EV_A);
1405	}	1669	}
1406		1670
1407	void inline_size	1671	void inline_size
…		…
1411	w->active = 0;	1675	w->active = 0;
1412	}	1676	}
1413		1677
1414	/*****************************************************************************/	1678	/*****************************************************************************/
1415		1679
1416	void	1680	void noinline
1417	ev_io_start (EV_P_ ev_io *w)	1681	ev_io_start (EV_P_ ev_io *w)
1418	{	1682	{
1419	int fd = w->fd;	1683	int fd = w->fd;
1420		1684
1421	if (expect_false (ev_is_active (w)))	1685	if (expect_false (ev_is_active (w)))
…		…
1423		1687
1424	assert (("ev_io_start called with negative fd", fd >= 0));	1688	assert (("ev_io_start called with negative fd", fd >= 0));
1425		1689
1426	ev_start (EV_A_ (W)w, 1);	1690	ev_start (EV_A_ (W)w, 1);
1427	array_needsize (ANFD, anfds, anfdmax, fd + 1, anfds_init);	1691	array_needsize (ANFD, anfds, anfdmax, fd + 1, anfds_init);
1428	wlist_add ((WL *)&anfds[fd].head, (WL)w);	1692	wlist_add (&anfds[fd].head, (WL)w);
1429		1693
1430	fd_change (EV_A_ fd);	1694	fd_change (EV_A_ fd, w->events & EV_IOFDSET | 1);
		1695	w->events &= ~EV_IOFDSET;
1431	}	1696	}
1432		1697
1433	void	1698	void noinline
1434	ev_io_stop (EV_P_ ev_io *w)	1699	ev_io_stop (EV_P_ ev_io *w)
1435	{	1700	{
1436	ev_clear_pending (EV_A_ (W)w);	1701	clear_pending (EV_A_ (W)w);
1437	if (expect_false (!ev_is_active (w)))	1702	if (expect_false (!ev_is_active (w)))
1438	return;	1703	return;
1439		1704
1440	assert (("ev_io_start called with illegal fd (must stay constant after start!)", w->fd >= 0 && w->fd < anfdmax));	1705	assert (("ev_io_start called with illegal fd (must stay constant after start!)", w->fd >= 0 && w->fd < anfdmax));
1441		1706
1442	wlist_del ((WL *)&anfds[w->fd].head, (WL)w);	1707	wlist_del (&anfds[w->fd].head, (WL)w);
1443	ev_stop (EV_A_ (W)w);	1708	ev_stop (EV_A_ (W)w);
1444		1709
1445	fd_change (EV_A_ w->fd);	1710	fd_change (EV_A_ w->fd, 1);
1446	}	1711	}
1447		1712
1448	void	1713	void noinline
1449	ev_timer_start (EV_P_ ev_timer *w)	1714	ev_timer_start (EV_P_ ev_timer *w)
1450	{	1715	{
1451	if (expect_false (ev_is_active (w)))	1716	if (expect_false (ev_is_active (w)))
1452	return;	1717	return;
1453		1718
1454	((WT)w)->at += mn_now;	1719	((WT)w)->at += mn_now;
1455		1720
1456	assert (("ev_timer_start called with negative timer repeat value", w->repeat >= 0.));	1721	assert (("ev_timer_start called with negative timer repeat value", w->repeat >= 0.));
1457		1722
1458	ev_start (EV_A_ (W)w, ++timercnt);	1723	ev_start (EV_A_ (W)w, ++timercnt);
1459	array_needsize (ev_timer *, timers, timermax, timercnt, EMPTY2);	1724	array_needsize (WT, timers, timermax, timercnt, EMPTY2);
1460	timers [timercnt - 1] = w;	1725	timers [timercnt - 1] = (WT)w;
1461	upheap ((WT *)timers, timercnt - 1);	1726	upheap (timers, timercnt - 1);
1462		1727
1463	assert (("internal timer heap corruption", timers [((W)w)->active - 1] == w));	1728	/*assert (("internal timer heap corruption", timers [((W)w)->active - 1] == w));*/
1464	}	1729	}
1465		1730
1466	void	1731	void noinline
1467	ev_timer_stop (EV_P_ ev_timer *w)	1732	ev_timer_stop (EV_P_ ev_timer *w)
1468	{	1733	{
1469	ev_clear_pending (EV_A_ (W)w);	1734	clear_pending (EV_A_ (W)w);
1470	if (expect_false (!ev_is_active (w)))	1735	if (expect_false (!ev_is_active (w)))
1471	return;	1736	return;
1472		1737
1473	assert (("internal timer heap corruption", timers [((W)w)->active - 1] == w));	1738	assert (("internal timer heap corruption", timers [((W)w)->active - 1] == (WT)w));
1474		1739
		1740	{
		1741	int active = ((W)w)->active;
		1742
1475	if (expect_true (((W)w)->active < timercnt--))	1743	if (expect_true (--active < --timercnt))
1476	{	1744	{
1477	timers [((W)w)->active - 1] = timers [timercnt];	1745	timers [active] = timers [timercnt];
1478	adjustheap ((WT *)timers, timercnt, ((W)w)->active - 1);	1746	adjustheap (timers, timercnt, active);
1479	}	1747	}
		1748	}
1480		1749
1481	((WT)w)->at -= mn_now;	1750	((WT)w)->at -= mn_now;
1482		1751
1483	ev_stop (EV_A_ (W)w);	1752	ev_stop (EV_A_ (W)w);
1484	}	1753	}
1485		1754
1486	void	1755	void noinline
1487	ev_timer_again (EV_P_ ev_timer *w)	1756	ev_timer_again (EV_P_ ev_timer *w)
1488	{	1757	{
1489	if (ev_is_active (w))	1758	if (ev_is_active (w))
1490	{	1759	{
1491	if (w->repeat)	1760	if (w->repeat)
1492	{	1761	{
1493	((WT)w)->at = mn_now + w->repeat;	1762	((WT)w)->at = mn_now + w->repeat;
1494	adjustheap ((WT *)timers, timercnt, ((W)w)->active - 1);	1763	adjustheap (timers, timercnt, ((W)w)->active - 1);
1495	}	1764	}
1496	else	1765	else
1497	ev_timer_stop (EV_A_ w);	1766	ev_timer_stop (EV_A_ w);
1498	}	1767	}
1499	else if (w->repeat)	1768	else if (w->repeat)
…		…
1502	ev_timer_start (EV_A_ w);	1771	ev_timer_start (EV_A_ w);
1503	}	1772	}
1504	}	1773	}
1505		1774
1506	#if EV_PERIODIC_ENABLE	1775	#if EV_PERIODIC_ENABLE
1507	void	1776	void noinline
1508	ev_periodic_start (EV_P_ ev_periodic *w)	1777	ev_periodic_start (EV_P_ ev_periodic *w)
1509	{	1778	{
1510	if (expect_false (ev_is_active (w)))	1779	if (expect_false (ev_is_active (w)))
1511	return;	1780	return;
1512		1781
…		…
1514	((WT)w)->at = w->reschedule_cb (w, ev_rt_now);	1783	((WT)w)->at = w->reschedule_cb (w, ev_rt_now);
1515	else if (w->interval)	1784	else if (w->interval)
1516	{	1785	{
1517	assert (("ev_periodic_start called with negative interval value", w->interval >= 0.));	1786	assert (("ev_periodic_start called with negative interval value", w->interval >= 0.));
1518	/* this formula differs from the one in periodic_reify because we do not always round up */	1787	/* this formula differs from the one in periodic_reify because we do not always round up */
1519	((WT)w)->at += ceil ((ev_rt_now - ((WT)w)->at) / w->interval) * w->interval;	1788	((WT)w)->at = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval;
1520	}	1789	}
		1790	else
		1791	((WT)w)->at = w->offset;
1521		1792
1522	ev_start (EV_A_ (W)w, ++periodiccnt);	1793	ev_start (EV_A_ (W)w, ++periodiccnt);
1523	array_needsize (ev_periodic *, periodics, periodicmax, periodiccnt, EMPTY2);	1794	array_needsize (WT, periodics, periodicmax, periodiccnt, EMPTY2);
1524	periodics [periodiccnt - 1] = w;	1795	periodics [periodiccnt - 1] = (WT)w;
1525	upheap ((WT *)periodics, periodiccnt - 1);	1796	upheap (periodics, periodiccnt - 1);
1526		1797
1527	assert (("internal periodic heap corruption", periodics [((W)w)->active - 1] == w));	1798	/*assert (("internal periodic heap corruption", periodics [((W)w)->active - 1] == w));*/
1528	}	1799	}
1529		1800
1530	void	1801	void noinline
1531	ev_periodic_stop (EV_P_ ev_periodic *w)	1802	ev_periodic_stop (EV_P_ ev_periodic *w)
1532	{	1803	{
1533	ev_clear_pending (EV_A_ (W)w);	1804	clear_pending (EV_A_ (W)w);
1534	if (expect_false (!ev_is_active (w)))	1805	if (expect_false (!ev_is_active (w)))
1535	return;	1806	return;
1536		1807
1537	assert (("internal periodic heap corruption", periodics [((W)w)->active - 1] == w));	1808	assert (("internal periodic heap corruption", periodics [((W)w)->active - 1] == (WT)w));
1538		1809
		1810	{
		1811	int active = ((W)w)->active;
		1812
1539	if (expect_true (((W)w)->active < periodiccnt--))	1813	if (expect_true (--active < --periodiccnt))
1540	{	1814	{
1541	periodics [((W)w)->active - 1] = periodics [periodiccnt];	1815	periodics [active] = periodics [periodiccnt];
1542	adjustheap ((WT *)periodics, periodiccnt, ((W)w)->active - 1);	1816	adjustheap (periodics, periodiccnt, active);
1543	}	1817	}
		1818	}
1544		1819
1545	ev_stop (EV_A_ (W)w);	1820	ev_stop (EV_A_ (W)w);
1546	}	1821	}
1547		1822
1548	void	1823	void noinline
1549	ev_periodic_again (EV_P_ ev_periodic *w)	1824	ev_periodic_again (EV_P_ ev_periodic *w)
1550	{	1825	{
1551	/* TODO: use adjustheap and recalculation */	1826	/* TODO: use adjustheap and recalculation */
1552	ev_periodic_stop (EV_A_ w);	1827	ev_periodic_stop (EV_A_ w);
1553	ev_periodic_start (EV_A_ w);	1828	ev_periodic_start (EV_A_ w);
1554	}	1829	}
1555	#endif	1830	#endif
1556		1831
1557	void
1558	ev_idle_start (EV_P_ ev_idle *w)
1559	{
1560	if (expect_false (ev_is_active (w)))
1561	return;
1562
1563	ev_start (EV_A_ (W)w, ++idlecnt);
1564	array_needsize (ev_idle *, idles, idlemax, idlecnt, EMPTY2);
1565	idles [idlecnt - 1] = w;
1566	}
1567
1568	void
1569	ev_idle_stop (EV_P_ ev_idle *w)
1570	{
1571	ev_clear_pending (EV_A_ (W)w);
1572	if (expect_false (!ev_is_active (w)))
1573	return;
1574
1575	{
1576	int active = ((W)w)->active;
1577	idles [active - 1] = idles [--idlecnt];
1578	((W)idles [active - 1])->active = active;
1579	}
1580
1581	ev_stop (EV_A_ (W)w);
1582	}
1583
1584	void
1585	ev_prepare_start (EV_P_ ev_prepare *w)
1586	{
1587	if (expect_false (ev_is_active (w)))
1588	return;
1589
1590	ev_start (EV_A_ (W)w, ++preparecnt);
1591	array_needsize (ev_prepare *, prepares, preparemax, preparecnt, EMPTY2);
1592	prepares [preparecnt - 1] = w;
1593	}
1594
1595	void
1596	ev_prepare_stop (EV_P_ ev_prepare *w)
1597	{
1598	ev_clear_pending (EV_A_ (W)w);
1599	if (expect_false (!ev_is_active (w)))
1600	return;
1601
1602	{
1603	int active = ((W)w)->active;
1604	prepares [active - 1] = prepares [--preparecnt];
1605	((W)prepares [active - 1])->active = active;
1606	}
1607
1608	ev_stop (EV_A_ (W)w);
1609	}
1610
1611	void
1612	ev_check_start (EV_P_ ev_check *w)
1613	{
1614	if (expect_false (ev_is_active (w)))
1615	return;
1616
1617	ev_start (EV_A_ (W)w, ++checkcnt);
1618	array_needsize (ev_check *, checks, checkmax, checkcnt, EMPTY2);
1619	checks [checkcnt - 1] = w;
1620	}
1621
1622	void
1623	ev_check_stop (EV_P_ ev_check *w)
1624	{
1625	ev_clear_pending (EV_A_ (W)w);
1626	if (expect_false (!ev_is_active (w)))
1627	return;
1628
1629	{
1630	int active = ((W)w)->active;
1631	checks [active - 1] = checks [--checkcnt];
1632	((W)checks [active - 1])->active = active;
1633	}
1634
1635	ev_stop (EV_A_ (W)w);
1636	}
1637
1638	#ifndef SA_RESTART	1832	#ifndef SA_RESTART
1639	# define SA_RESTART 0	1833	# define SA_RESTART 0
1640	#endif	1834	#endif
1641		1835
1642	void	1836	void noinline
1643	ev_signal_start (EV_P_ ev_signal *w)	1837	ev_signal_start (EV_P_ ev_signal *w)
1644	{	1838	{
1645	#if EV_MULTIPLICITY	1839	#if EV_MULTIPLICITY
1646	assert (("signal watchers are only supported in the default loop", loop == ev_default_loop_ptr));	1840	assert (("signal watchers are only supported in the default loop", loop == ev_default_loop_ptr));
1647	#endif	1841	#endif
1648	if (expect_false (ev_is_active (w)))	1842	if (expect_false (ev_is_active (w)))
1649	return;	1843	return;
1650		1844
1651	assert (("ev_signal_start called with illegal signal number", w->signum > 0));	1845	assert (("ev_signal_start called with illegal signal number", w->signum > 0));
1652		1846
		1847	{
		1848	#ifndef _WIN32
		1849	sigset_t full, prev;
		1850	sigfillset (&full);
		1851	sigprocmask (SIG_SETMASK, &full, &prev);
		1852	#endif
		1853
		1854	array_needsize (ANSIG, signals, signalmax, w->signum, signals_init);
		1855
		1856	#ifndef _WIN32
		1857	sigprocmask (SIG_SETMASK, &prev, 0);
		1858	#endif
		1859	}
		1860
1653	ev_start (EV_A_ (W)w, 1);	1861	ev_start (EV_A_ (W)w, 1);
1654	array_needsize (ANSIG, signals, signalmax, w->signum, signals_init);
1655	wlist_add ((WL *)&signals [w->signum - 1].head, (WL)w);	1862	wlist_add (&signals [w->signum - 1].head, (WL)w);
1656		1863
1657	if (!((WL)w)->next)	1864	if (!((WL)w)->next)
1658	{	1865	{
1659	#if _WIN32	1866	#if _WIN32
1660	signal (w->signum, sighandler);	1867	signal (w->signum, sighandler);
…		…
1666	sigaction (w->signum, &sa, 0);	1873	sigaction (w->signum, &sa, 0);
1667	#endif	1874	#endif
1668	}	1875	}
1669	}	1876	}
1670		1877
1671	void	1878	void noinline
1672	ev_signal_stop (EV_P_ ev_signal *w)	1879	ev_signal_stop (EV_P_ ev_signal *w)
1673	{	1880	{
1674	ev_clear_pending (EV_A_ (W)w);	1881	clear_pending (EV_A_ (W)w);
1675	if (expect_false (!ev_is_active (w)))	1882	if (expect_false (!ev_is_active (w)))
1676	return;	1883	return;
1677		1884
1678	wlist_del ((WL *)&signals [w->signum - 1].head, (WL)w);	1885	wlist_del (&signals [w->signum - 1].head, (WL)w);
1679	ev_stop (EV_A_ (W)w);	1886	ev_stop (EV_A_ (W)w);
1680		1887
1681	if (!signals [w->signum - 1].head)	1888	if (!signals [w->signum - 1].head)
1682	signal (w->signum, SIG_DFL);	1889	signal (w->signum, SIG_DFL);
1683	}	1890	}
…		…
1690	#endif	1897	#endif
1691	if (expect_false (ev_is_active (w)))	1898	if (expect_false (ev_is_active (w)))
1692	return;	1899	return;
1693		1900
1694	ev_start (EV_A_ (W)w, 1);	1901	ev_start (EV_A_ (W)w, 1);
1695	wlist_add ((WL *)&childs [w->pid & (PID_HASHSIZE - 1)], (WL)w);	1902	wlist_add (&childs [w->pid & (EV_PID_HASHSIZE - 1)], (WL)w);
1696	}	1903	}
1697		1904
1698	void	1905	void
1699	ev_child_stop (EV_P_ ev_child *w)	1906	ev_child_stop (EV_P_ ev_child *w)
1700	{	1907	{
1701	ev_clear_pending (EV_A_ (W)w);	1908	clear_pending (EV_A_ (W)w);
1702	if (expect_false (!ev_is_active (w)))	1909	if (expect_false (!ev_is_active (w)))
1703	return;	1910	return;
1704		1911
1705	wlist_del ((WL *)&childs [w->pid & (PID_HASHSIZE - 1)], (WL)w);	1912	wlist_del (&childs [w->pid & (EV_PID_HASHSIZE - 1)], (WL)w);
1706	ev_stop (EV_A_ (W)w);	1913	ev_stop (EV_A_ (W)w);
1707	}	1914	}
1708		1915
1709	#if EV_EMBED_ENABLE	1916	#if EV_STAT_ENABLE
		1917
		1918	# ifdef _WIN32
		1919	# undef lstat
		1920	# define lstat(a,b) _stati64 (a,b)
		1921	# endif
		1922
		1923	#define DEF_STAT_INTERVAL 5.0074891
		1924	#define MIN_STAT_INTERVAL 0.1074891
		1925
		1926	static void noinline stat_timer_cb (EV_P_ ev_timer *w_, int revents);
		1927
		1928	#if EV_USE_INOTIFY
		1929	# define EV_INOTIFY_BUFSIZE 8192
		1930
1710	void noinline	1931	static void noinline
1711	ev_embed_sweep (EV_P_ ev_embed *w)	1932	infy_add (EV_P_ ev_stat *w)
1712	{	1933	{
1713	ev_loop (w->loop, EVLOOP_NONBLOCK);	1934	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);
		1935
		1936	if (w->wd < 0)
		1937	{
		1938	ev_timer_start (EV_A_ &w->timer); /* this is not race-free, so we still need to recheck periodically */
		1939
		1940	/* monitor some parent directory for speedup hints */
		1941	if ((errno == ENOENT || errno == EACCES) && strlen (w->path) < 4096)
		1942	{
		1943	char path [4096];
		1944	strcpy (path, w->path);
		1945
		1946	do
		1947	{
		1948	int mask = IN_MASK_ADD | IN_DELETE_SELF | IN_MOVE_SELF
		1949	| (errno == EACCES ? IN_ATTRIB : IN_CREATE | IN_MOVED_TO);
		1950
		1951	char *pend = strrchr (path, '/');
		1952
		1953	if (!pend)
		1954	break; /* whoops, no '/', complain to your admin */
		1955
		1956	*pend = 0;
		1957	w->wd = inotify_add_watch (fs_fd, path, mask);
		1958	}
		1959	while (w->wd < 0 && (errno == ENOENT || errno == EACCES));
		1960	}
		1961	}
		1962	else
		1963	ev_timer_stop (EV_A_ &w->timer); /* we can watch this in a race-free way */
		1964
		1965	if (w->wd >= 0)
		1966	wlist_add (&fs_hash [w->wd & (EV_INOTIFY_HASHSIZE - 1)].head, (WL)w);
		1967	}
		1968
		1969	static void noinline
		1970	infy_del (EV_P_ ev_stat *w)
		1971	{
		1972	int slot;
		1973	int wd = w->wd;
		1974
		1975	if (wd < 0)
		1976	return;
		1977
		1978	w->wd = -2;
		1979	slot = wd & (EV_INOTIFY_HASHSIZE - 1);
		1980	wlist_del (&fs_hash [slot].head, (WL)w);
		1981
		1982	/* remove this watcher, if others are watching it, they will rearm */
		1983	inotify_rm_watch (fs_fd, wd);
		1984	}
		1985
		1986	static void noinline
		1987	infy_wd (EV_P_ int slot, int wd, struct inotify_event *ev)
		1988	{
		1989	if (slot < 0)
		1990	/* overflow, need to check for all hahs slots */
		1991	for (slot = 0; slot < EV_INOTIFY_HASHSIZE; ++slot)
		1992	infy_wd (EV_A_ slot, wd, ev);
		1993	else
		1994	{
		1995	WL w_;
		1996
		1997	for (w_ = fs_hash [slot & (EV_INOTIFY_HASHSIZE - 1)].head; w_; )
		1998	{
		1999	ev_stat *w = (ev_stat *)w_;
		2000	w_ = w_->next; /* lets us remove this watcher and all before it */
		2001
		2002	if (w->wd == wd || wd == -1)
		2003	{
		2004	if (ev->mask & (IN_IGNORED | IN_UNMOUNT | IN_DELETE_SELF))
		2005	{
		2006	w->wd = -1;
		2007	infy_add (EV_A_ w); /* re-add, no matter what */
		2008	}
		2009
		2010	stat_timer_cb (EV_A_ &w->timer, 0);
		2011	}
		2012	}
		2013	}
1714	}	2014	}
1715		2015
1716	static void	2016	static void
1717	embed_cb (EV_P_ ev_io *io, int revents)	2017	infy_cb (EV_P_ ev_io *w, int revents)
1718	{	2018	{
1719	ev_embed *w = (ev_embed *)(((char *)io) - offsetof (ev_embed, io));	2019	char buf [EV_INOTIFY_BUFSIZE];
		2020	struct inotify_event *ev = (struct inotify_event *)buf;
		2021	int ofs;
		2022	int len = read (fs_fd, buf, sizeof (buf));
1720		2023
1721	if (ev_cb (w))	2024	for (ofs = 0; ofs < len; ofs += sizeof (struct inotify_event) + ev->len)
1722	ev_feed_event (EV_A_ (W)w, EV_EMBED);	2025	infy_wd (EV_A_ ev->wd, ev->wd, ev);
1723	else
1724	ev_embed_sweep (loop, w);
1725	}	2026	}
1726		2027
1727	void	2028	void inline_size
1728	ev_embed_start (EV_P_ ev_embed *w)	2029	infy_init (EV_P)
1729	{	2030	{
1730	if (expect_false (ev_is_active (w)))	2031	if (fs_fd != -2)
1731	return;	2032	return;
1732		2033
		2034	fs_fd = inotify_init ();
		2035
		2036	if (fs_fd >= 0)
1733	{	2037	{
1734	struct ev_loop *loop = w->loop;	2038	ev_io_init (&fs_w, infy_cb, fs_fd, EV_READ);
1735	assert (("loop to be embedded is not embeddable", backend & ev_embeddable_backends ()));	2039	ev_set_priority (&fs_w, EV_MAXPRI);
1736	ev_io_init (&w->io, embed_cb, backend_fd, EV_READ);
1737	}
1738
1739	ev_set_priority (&w->io, ev_priority (w));
1740	ev_io_start (EV_A_ &w->io);	2040	ev_io_start (EV_A_ &fs_w);
1741		2041	}
1742	ev_start (EV_A_ (W)w, 1);
1743	}	2042	}
1744		2043
1745	void	2044	void inline_size
1746	ev_embed_stop (EV_P_ ev_embed *w)	2045	infy_fork (EV_P)
1747	{	2046	{
1748	ev_clear_pending (EV_A_ (W)w);	2047	int slot;
1749	if (expect_false (!ev_is_active (w)))
1750	return;
1751		2048
1752	ev_io_stop (EV_A_ &w->io);	2049	if (fs_fd < 0)
		2050	return;
1753		2051
1754	ev_stop (EV_A_ (W)w);	2052	close (fs_fd);
1755	}	2053	fs_fd = inotify_init ();
1756	#endif
1757		2054
1758	#if EV_STAT_ENABLE	2055	for (slot = 0; slot < EV_INOTIFY_HASHSIZE; ++slot)
		2056	{
		2057	WL w_ = fs_hash [slot].head;
		2058	fs_hash [slot].head = 0;
1759		2059
1760	# ifdef _WIN32	2060	while (w_)
1761	# define lstat(a,b) stat(a,b)	2061	{
		2062	ev_stat *w = (ev_stat *)w_;
		2063	w_ = w_->next; /* lets us add this watcher */
		2064
		2065	w->wd = -1;
		2066
		2067	if (fs_fd >= 0)
		2068	infy_add (EV_A_ w); /* re-add, no matter what */
		2069	else
		2070	ev_timer_start (EV_A_ &w->timer);
		2071	}
		2072
		2073	}
		2074	}
		2075
1762	# endif	2076	#endif
1763		2077
1764	void	2078	void
1765	ev_stat_stat (EV_P_ ev_stat *w)	2079	ev_stat_stat (EV_P_ ev_stat *w)
1766	{	2080	{
1767	if (lstat (w->path, &w->attr) < 0)	2081	if (lstat (w->path, &w->attr) < 0)
1768	w->attr.st_nlink = 0;	2082	w->attr.st_nlink = 0;
1769	else if (!w->attr.st_nlink)	2083	else if (!w->attr.st_nlink)
1770	w->attr.st_nlink = 1;	2084	w->attr.st_nlink = 1;
1771	}	2085	}
1772		2086
1773	static void	2087	static void noinline
1774	stat_timer_cb (EV_P_ ev_timer *w_, int revents)	2088	stat_timer_cb (EV_P_ ev_timer *w_, int revents)
1775	{	2089	{
1776	ev_stat *w = (ev_stat *)(((char *)w_) - offsetof (ev_stat, timer));	2090	ev_stat *w = (ev_stat *)(((char *)w_) - offsetof (ev_stat, timer));
1777		2091
1778	/* we copy this here each the time so that */	2092	/* we copy this here each the time so that */
1779	/* prev has the old value when the callback gets invoked */	2093	/* prev has the old value when the callback gets invoked */
1780	w->prev = w->attr;	2094	w->prev = w->attr;
1781	ev_stat_stat (EV_A_ w);	2095	ev_stat_stat (EV_A_ w);
1782		2096
1783	if (memcmp (&w->prev, &w->attr, sizeof (ev_statdata)))	2097	/* memcmp doesn't work on netbsd, they.... do stuff to their struct stat */
		2098	if (
		2099	w->prev.st_dev != w->attr.st_dev
		2100	|| w->prev.st_ino != w->attr.st_ino
		2101	|| w->prev.st_mode != w->attr.st_mode
		2102	|| w->prev.st_nlink != w->attr.st_nlink
		2103	|| w->prev.st_uid != w->attr.st_uid
		2104	|| w->prev.st_gid != w->attr.st_gid
		2105	|| w->prev.st_rdev != w->attr.st_rdev
		2106	|| w->prev.st_size != w->attr.st_size
		2107	|| w->prev.st_atime != w->attr.st_atime
		2108	|| w->prev.st_mtime != w->attr.st_mtime
		2109	|| w->prev.st_ctime != w->attr.st_ctime
		2110	) {
		2111	#if EV_USE_INOTIFY
		2112	infy_del (EV_A_ w);
		2113	infy_add (EV_A_ w);
		2114	ev_stat_stat (EV_A_ w); /* avoid race... */
		2115	#endif
		2116
1784	ev_feed_event (EV_A_ w, EV_STAT);	2117	ev_feed_event (EV_A_ w, EV_STAT);
		2118	}
1785	}	2119	}
1786		2120
1787	void	2121	void
1788	ev_stat_start (EV_P_ ev_stat *w)	2122	ev_stat_start (EV_P_ ev_stat *w)
1789	{	2123	{
…		…
1794	memset (&w->prev, 0, sizeof (ev_statdata));	2128	memset (&w->prev, 0, sizeof (ev_statdata));
1795	memset (&w->attr, 0, sizeof (ev_statdata));	2129	memset (&w->attr, 0, sizeof (ev_statdata));
1796		2130
1797	ev_stat_stat (EV_A_ w);	2131	ev_stat_stat (EV_A_ w);
1798		2132
		2133	if (w->interval < MIN_STAT_INTERVAL)
		2134	w->interval = w->interval ? MIN_STAT_INTERVAL : DEF_STAT_INTERVAL;
		2135
1799	ev_timer_init (&w->timer, stat_timer_cb, w->interval, w->interval);	2136	ev_timer_init (&w->timer, stat_timer_cb, w->interval, w->interval);
1800	ev_set_priority (&w->timer, ev_priority (w));	2137	ev_set_priority (&w->timer, ev_priority (w));
		2138
		2139	#if EV_USE_INOTIFY
		2140	infy_init (EV_A);
		2141
		2142	if (fs_fd >= 0)
		2143	infy_add (EV_A_ w);
		2144	else
		2145	#endif
1801	ev_timer_start (EV_A_ &w->timer);	2146	ev_timer_start (EV_A_ &w->timer);
1802		2147
1803	ev_start (EV_A_ (W)w, 1);	2148	ev_start (EV_A_ (W)w, 1);
1804	}	2149	}
1805		2150
1806	void	2151	void
1807	ev_stat_stop (EV_P_ ev_stat *w)	2152	ev_stat_stop (EV_P_ ev_stat *w)
1808	{	2153	{
1809	ev_clear_pending (EV_A_ (W)w);	2154	clear_pending (EV_A_ (W)w);
1810	if (expect_false (!ev_is_active (w)))	2155	if (expect_false (!ev_is_active (w)))
1811	return;	2156	return;
1812		2157
		2158	#if EV_USE_INOTIFY
		2159	infy_del (EV_A_ w);
		2160	#endif
1813	ev_timer_stop (EV_A_ &w->timer);	2161	ev_timer_stop (EV_A_ &w->timer);
		2162
		2163	ev_stop (EV_A_ (W)w);
		2164	}
		2165	#endif
		2166
		2167	#if EV_IDLE_ENABLE
		2168	void
		2169	ev_idle_start (EV_P_ ev_idle *w)
		2170	{
		2171	if (expect_false (ev_is_active (w)))
		2172	return;
		2173
		2174	pri_adjust (EV_A_ (W)w);
		2175
		2176	{
		2177	int active = ++idlecnt [ABSPRI (w)];
		2178
		2179	++idleall;
		2180	ev_start (EV_A_ (W)w, active);
		2181
		2182	array_needsize (ev_idle *, idles [ABSPRI (w)], idlemax [ABSPRI (w)], active, EMPTY2);
		2183	idles [ABSPRI (w)][active - 1] = w;
		2184	}
		2185	}
		2186
		2187	void
		2188	ev_idle_stop (EV_P_ ev_idle *w)
		2189	{
		2190	clear_pending (EV_A_ (W)w);
		2191	if (expect_false (!ev_is_active (w)))
		2192	return;
		2193
		2194	{
		2195	int active = ((W)w)->active;
		2196
		2197	idles [ABSPRI (w)][active - 1] = idles [ABSPRI (w)][--idlecnt [ABSPRI (w)]];
		2198	((W)idles [ABSPRI (w)][active - 1])->active = active;
		2199
		2200	ev_stop (EV_A_ (W)w);
		2201	--idleall;
		2202	}
		2203	}
		2204	#endif
		2205
		2206	void
		2207	ev_prepare_start (EV_P_ ev_prepare *w)
		2208	{
		2209	if (expect_false (ev_is_active (w)))
		2210	return;
		2211
		2212	ev_start (EV_A_ (W)w, ++preparecnt);
		2213	array_needsize (ev_prepare *, prepares, preparemax, preparecnt, EMPTY2);
		2214	prepares [preparecnt - 1] = w;
		2215	}
		2216
		2217	void
		2218	ev_prepare_stop (EV_P_ ev_prepare *w)
		2219	{
		2220	clear_pending (EV_A_ (W)w);
		2221	if (expect_false (!ev_is_active (w)))
		2222	return;
		2223
		2224	{
		2225	int active = ((W)w)->active;
		2226	prepares [active - 1] = prepares [--preparecnt];
		2227	((W)prepares [active - 1])->active = active;
		2228	}
		2229
		2230	ev_stop (EV_A_ (W)w);
		2231	}
		2232
		2233	void
		2234	ev_check_start (EV_P_ ev_check *w)
		2235	{
		2236	if (expect_false (ev_is_active (w)))
		2237	return;
		2238
		2239	ev_start (EV_A_ (W)w, ++checkcnt);
		2240	array_needsize (ev_check *, checks, checkmax, checkcnt, EMPTY2);
		2241	checks [checkcnt - 1] = w;
		2242	}
		2243
		2244	void
		2245	ev_check_stop (EV_P_ ev_check *w)
		2246	{
		2247	clear_pending (EV_A_ (W)w);
		2248	if (expect_false (!ev_is_active (w)))
		2249	return;
		2250
		2251	{
		2252	int active = ((W)w)->active;
		2253	checks [active - 1] = checks [--checkcnt];
		2254	((W)checks [active - 1])->active = active;
		2255	}
		2256
		2257	ev_stop (EV_A_ (W)w);
		2258	}
		2259
		2260	#if EV_EMBED_ENABLE
		2261	void noinline
		2262	ev_embed_sweep (EV_P_ ev_embed *w)
		2263	{
		2264	ev_loop (w->other, EVLOOP_NONBLOCK);
		2265	}
		2266
		2267	static void
		2268	embed_io_cb (EV_P_ ev_io *io, int revents)
		2269	{
		2270	ev_embed *w = (ev_embed *)(((char *)io) - offsetof (ev_embed, io));
		2271
		2272	if (ev_cb (w))
		2273	ev_feed_event (EV_A_ (W)w, EV_EMBED);
		2274	else
		2275	ev_loop (w->other, EVLOOP_NONBLOCK);
		2276	}
		2277
		2278	static void
		2279	embed_prepare_cb (EV_P_ ev_prepare *prepare, int revents)
		2280	{
		2281	ev_embed *w = (ev_embed *)(((char *)prepare) - offsetof (ev_embed, prepare));
		2282
		2283	{
		2284	struct ev_loop *loop = w->other;
		2285
		2286	while (fdchangecnt)
		2287	{
		2288	fd_reify (EV_A);
		2289	ev_loop (EV_A_ EVLOOP_NONBLOCK);
		2290	}
		2291	}
		2292	}
		2293
		2294	#if 0
		2295	static void
		2296	embed_idle_cb (EV_P_ ev_idle *idle, int revents)
		2297	{
		2298	ev_idle_stop (EV_A_ idle);
		2299	}
		2300	#endif
		2301
		2302	void
		2303	ev_embed_start (EV_P_ ev_embed *w)
		2304	{
		2305	if (expect_false (ev_is_active (w)))
		2306	return;
		2307
		2308	{
		2309	struct ev_loop *loop = w->other;
		2310	assert (("loop to be embedded is not embeddable", backend & ev_embeddable_backends ()));
		2311	ev_io_init (&w->io, embed_io_cb, backend_fd, EV_READ);
		2312	}
		2313
		2314	ev_set_priority (&w->io, ev_priority (w));
		2315	ev_io_start (EV_A_ &w->io);
		2316
		2317	ev_prepare_init (&w->prepare, embed_prepare_cb);
		2318	ev_set_priority (&w->prepare, EV_MINPRI);
		2319	ev_prepare_start (EV_A_ &w->prepare);
		2320
		2321	/*ev_idle_init (&w->idle, e,bed_idle_cb);*/
		2322
		2323	ev_start (EV_A_ (W)w, 1);
		2324	}
		2325
		2326	void
		2327	ev_embed_stop (EV_P_ ev_embed *w)
		2328	{
		2329	clear_pending (EV_A_ (W)w);
		2330	if (expect_false (!ev_is_active (w)))
		2331	return;
		2332
		2333	ev_io_stop (EV_A_ &w->io);
		2334	ev_prepare_stop (EV_A_ &w->prepare);
		2335
		2336	ev_stop (EV_A_ (W)w);
		2337	}
		2338	#endif
		2339
		2340	#if EV_FORK_ENABLE
		2341	void
		2342	ev_fork_start (EV_P_ ev_fork *w)
		2343	{
		2344	if (expect_false (ev_is_active (w)))
		2345	return;
		2346
		2347	ev_start (EV_A_ (W)w, ++forkcnt);
		2348	array_needsize (ev_fork *, forks, forkmax, forkcnt, EMPTY2);
		2349	forks [forkcnt - 1] = w;
		2350	}
		2351
		2352	void
		2353	ev_fork_stop (EV_P_ ev_fork *w)
		2354	{
		2355	clear_pending (EV_A_ (W)w);
		2356	if (expect_false (!ev_is_active (w)))
		2357	return;
		2358
		2359	{
		2360	int active = ((W)w)->active;
		2361	forks [active - 1] = forks [--forkcnt];
		2362	((W)forks [active - 1])->active = active;
		2363	}
1814		2364
1815	ev_stop (EV_A_ (W)w);	2365	ev_stop (EV_A_ (W)w);
1816	}	2366	}
1817	#endif	2367	#endif
1818		2368
…		…
1878	ev_timer_set (&once->to, timeout, 0.);	2428	ev_timer_set (&once->to, timeout, 0.);
1879	ev_timer_start (EV_A_ &once->to);	2429	ev_timer_start (EV_A_ &once->to);
1880	}	2430	}
1881	}	2431	}
1882		2432
		2433	#if EV_MULTIPLICITY
		2434	#include "ev_wrap.h"
		2435	#endif
		2436
1883	#ifdef __cplusplus	2437	#ifdef __cplusplus
1884	}	2438	}
1885	#endif	2439	#endif
1886		2440

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