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Comparing libev/ev.c (file contents):
Revision 1.133 by root, Fri Nov 23 11:32:22 2007 UTC vs.
Revision 1.183 by root, Wed Dec 12 05:11:56 2007 UTC

…		…
94	# else	94	# else
95	# define EV_USE_PORT 0	95	# define EV_USE_PORT 0
96	# endif	96	# endif
97	# endif	97	# endif
98		98
		99	# ifndef EV_USE_INOTIFY
		100	# if HAVE_INOTIFY_INIT && HAVE_SYS_INOTIFY_H
		101	# define EV_USE_INOTIFY 1
		102	# else
		103	# define EV_USE_INOTIFY 0
		104	# endif
		105	# endif
		106
99	#endif	107	#endif
100		108
101	#include <math.h>	109	#include <math.h>
102	#include <stdlib.h>	110	#include <stdlib.h>
103	#include <fcntl.h>	111	#include <fcntl.h>
…		…
110	#include <sys/types.h>	118	#include <sys/types.h>
111	#include <time.h>	119	#include <time.h>
112		120
113	#include <signal.h>	121	#include <signal.h>
114		122
		123	#ifdef EV_H
		124	# include EV_H
		125	#else
		126	# include "ev.h"
		127	#endif
		128
115	#ifndef _WIN32	129	#ifndef _WIN32
116	# include <unistd.h>
117	# include <sys/time.h>	130	# include <sys/time.h>
118	# include <sys/wait.h>	131	# include <sys/wait.h>
		132	# include <unistd.h>
119	#else	133	#else
120	# define WIN32_LEAN_AND_MEAN	134	# define WIN32_LEAN_AND_MEAN
121	# include <windows.h>	135	# include <windows.h>
122	# ifndef EV_SELECT_IS_WINSOCKET	136	# ifndef EV_SELECT_IS_WINSOCKET
123	# define EV_SELECT_IS_WINSOCKET 1	137	# define EV_SELECT_IS_WINSOCKET 1
…		…
156		170
157	#ifndef EV_USE_PORT	171	#ifndef EV_USE_PORT
158	# define EV_USE_PORT 0	172	# define EV_USE_PORT 0
159	#endif	173	#endif
160		174
		175	#ifndef EV_USE_INOTIFY
		176	# define EV_USE_INOTIFY 0
		177	#endif
		178
		179	#ifndef EV_PID_HASHSIZE
		180	# if EV_MINIMAL
		181	# define EV_PID_HASHSIZE 1
		182	# else
		183	# define EV_PID_HASHSIZE 16
		184	# endif
		185	#endif
		186
		187	#ifndef EV_INOTIFY_HASHSIZE
		188	# if EV_MINIMAL
		189	# define EV_INOTIFY_HASHSIZE 1
		190	# else
		191	# define EV_INOTIFY_HASHSIZE 16
		192	# endif
		193	#endif
		194
161	/**/	195	/**/
162		196
163	#ifndef CLOCK_MONOTONIC	197	#ifndef CLOCK_MONOTONIC
164	# undef EV_USE_MONOTONIC	198	# undef EV_USE_MONOTONIC
165	# define EV_USE_MONOTONIC 0	199	# define EV_USE_MONOTONIC 0
…		…
172		206
173	#if EV_SELECT_IS_WINSOCKET	207	#if EV_SELECT_IS_WINSOCKET
174	# include <winsock.h>	208	# include <winsock.h>
175	#endif	209	#endif
176		210
		211	#if !EV_STAT_ENABLE
		212	# define EV_USE_INOTIFY 0
		213	#endif
		214
		215	#if EV_USE_INOTIFY
		216	# include <sys/inotify.h>
		217	#endif
		218
177	/**/	219	/**/
		220
		221	/*
		222	* This is used to avoid floating point rounding problems.
		223	* It is added to ev_rt_now when scheduling periodics
		224	* to ensure progress, time-wise, even when rounding
		225	* errors are against us.
		226	* This value is good at least till the year 4000.
		227	* Better solutions welcome.
		228	*/
		229	#define TIME_EPSILON 0.0001220703125 /* 1/8192 */
178		230
179	#define MIN_TIMEJUMP 1. /* minimum timejump that gets detected (if monotonic clock available) */	231	#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) */	232	#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 */	233	/*#define CLEANUP_INTERVAL (MAX_BLOCKTIME * 5.) /* how often to try to free memory and re-check fds, TODO */
183
184	#ifdef EV_H
185	# include EV_H
186	#else
187	# include "ev.h"
188	#endif
189		234
190	#if __GNUC__ >= 3	235	#if __GNUC__ >= 3
191	# define expect(expr,value) __builtin_expect ((expr),(value))	236	# define expect(expr,value) __builtin_expect ((expr),(value))
192	# define inline static inline	237	# define noinline __attribute__ ((noinline))
193	#else	238	#else
194	# define expect(expr,value) (expr)	239	# define expect(expr,value) (expr)
195	# define inline static	240	# define noinline
		241	# if __STDC_VERSION__ < 199901L
		242	# define inline
		243	# endif
196	#endif	244	#endif
197		245
198	#define expect_false(expr) expect ((expr) != 0, 0)	246	#define expect_false(expr) expect ((expr) != 0, 0)
199	#define expect_true(expr) expect ((expr) != 0, 1)	247	#define expect_true(expr) expect ((expr) != 0, 1)
		248	#define inline_size static inline
		249
		250	#if EV_MINIMAL
		251	# define inline_speed static noinline
		252	#else
		253	# define inline_speed static inline
		254	#endif
200		255
201	#define NUMPRI (EV_MAXPRI - EV_MINPRI + 1)	256	#define NUMPRI (EV_MAXPRI - EV_MINPRI + 1)
202	#define ABSPRI(w) ((w)->priority - EV_MINPRI)	257	#define ABSPRI(w) (((W)w)->priority - EV_MINPRI)
203		258
204	#define EMPTY0 /* required for microsofts broken pseudo-c compiler */	259	#define EMPTY /* required for microsofts broken pseudo-c compiler */
205	#define EMPTY2(a,b) /* used to suppress some warnings */	260	#define EMPTY2(a,b) /* used to suppress some warnings */
206		261
207	typedef struct ev_watcher *W;	262	typedef ev_watcher *W;
208	typedef struct ev_watcher_list *WL;	263	typedef ev_watcher_list *WL;
209	typedef struct ev_watcher_time *WT;	264	typedef ev_watcher_time *WT;
210		265
211	static int have_monotonic; /* did clock_gettime (CLOCK_MONOTONIC) work? */	266	static int have_monotonic; /* did clock_gettime (CLOCK_MONOTONIC) work? */
212		267
213	#ifdef _WIN32	268	#ifdef _WIN32
214	# include "ev_win32.c"	269	# include "ev_win32.c"
…		…
216		271
217	/*****************************************************************************/	272	/*****************************************************************************/
218		273
219	static void (*syserr_cb)(const char *msg);	274	static void (*syserr_cb)(const char *msg);
220		275
		276	void
221	void ev_set_syserr_cb (void (*cb)(const char *msg))	277	ev_set_syserr_cb (void (*cb)(const char *msg))
222	{	278	{
223	syserr_cb = cb;	279	syserr_cb = cb;
224	}	280	}
225		281
226	static void	282	static void noinline
227	syserr (const char *msg)	283	syserr (const char *msg)
228	{	284	{
229	if (!msg)	285	if (!msg)
230	msg = "(libev) system error";	286	msg = "(libev) system error";
231		287
…		…
238	}	294	}
239	}	295	}
240		296
241	static void *(*alloc)(void *ptr, long size);	297	static void *(*alloc)(void *ptr, long size);
242		298
		299	void
243	void ev_set_allocator (void *(*cb)(void *ptr, long size))	300	ev_set_allocator (void *(*cb)(void *ptr, long size))
244	{	301	{
245	alloc = cb;	302	alloc = cb;
246	}	303	}
247		304
248	static void *	305	inline_speed void *
249	ev_realloc (void *ptr, long size)	306	ev_realloc (void *ptr, long size)
250	{	307	{
251	ptr = alloc ? alloc (ptr, size) : realloc (ptr, size);	308	ptr = alloc ? alloc (ptr, size) : realloc (ptr, size);
252		309
253	if (!ptr && size)	310	if (!ptr && size)
…		…
277	typedef struct	334	typedef struct
278	{	335	{
279	W w;	336	W w;
280	int events;	337	int events;
281	} ANPENDING;	338	} ANPENDING;
		339
		340	#if EV_USE_INOTIFY
		341	typedef struct
		342	{
		343	WL head;
		344	} ANFS;
		345	#endif
282		346
283	#if EV_MULTIPLICITY	347	#if EV_MULTIPLICITY
284		348
285	struct ev_loop	349	struct ev_loop
286	{	350	{
…		…
320	gettimeofday (&tv, 0);	384	gettimeofday (&tv, 0);
321	return tv.tv_sec + tv.tv_usec * 1e-6;	385	return tv.tv_sec + tv.tv_usec * 1e-6;
322	#endif	386	#endif
323	}	387	}
324		388
325	inline ev_tstamp	389	ev_tstamp inline_size
326	get_clock (void)	390	get_clock (void)
327	{	391	{
328	#if EV_USE_MONOTONIC	392	#if EV_USE_MONOTONIC
329	if (expect_true (have_monotonic))	393	if (expect_true (have_monotonic))
330	{	394	{
…		…
343	{	407	{
344	return ev_rt_now;	408	return ev_rt_now;
345	}	409	}
346	#endif	410	#endif
347		411
348	#define array_roundsize(type,n) (((n) | 4) & ~3)	412	int inline_size
		413	array_nextsize (int elem, int cur, int cnt)
		414	{
		415	int ncur = cur + 1;
		416
		417	do
		418	ncur <<= 1;
		419	while (cnt > ncur);
		420
		421	/* if size > 4096, round to 4096 - 4 * longs to accomodate malloc overhead */
		422	if (elem * ncur > 4096)
		423	{
		424	ncur *= elem;
		425	ncur = (ncur + elem + 4095 + sizeof (void *) * 4) & ~4095;
		426	ncur = ncur - sizeof (void *) * 4;
		427	ncur /= elem;
		428	}
		429
		430	return ncur;
		431	}
		432
		433	static noinline void *
		434	array_realloc (int elem, void *base, int *cur, int cnt)
		435	{
		436	*cur = array_nextsize (elem, *cur, cnt);
		437	return ev_realloc (base, elem * *cur);
		438	}
349		439
350	#define array_needsize(type,base,cur,cnt,init) \	440	#define array_needsize(type,base,cur,cnt,init) \
351	if (expect_false ((cnt) > cur)) \	441	if (expect_false ((cnt) > (cur))) \
352	{ \	442	{ \
353	int newcnt = cur; \	443	int ocur_ = (cur); \
354	do \	444	(base) = (type *)array_realloc \
355	{ \	445	(sizeof (type), (base), &(cur), (cnt)); \
356	newcnt = array_roundsize (type, newcnt << 1); \	446	init ((base) + (ocur_), (cur) - ocur_); \
357	} \
358	while ((cnt) > newcnt); \
359	\
360	base = (type *)ev_realloc (base, sizeof (type) * (newcnt));\
361	init (base + cur, newcnt - cur); \
362	cur = newcnt; \
363	}	447	}
364		448
		449	#if 0
365	#define array_slim(type,stem) \	450	#define array_slim(type,stem) \
366	if (stem ## max < array_roundsize (stem ## cnt >> 2)) \	451	if (stem ## max < array_roundsize (stem ## cnt >> 2)) \
367	{ \	452	{ \
368	stem ## max = array_roundsize (stem ## cnt >> 1); \	453	stem ## max = array_roundsize (stem ## cnt >> 1); \
369	base = (type *)ev_realloc (base, sizeof (type) * (stem ## max));\	454	base = (type *)ev_realloc (base, sizeof (type) * (stem ## max));\
370	fprintf (stderr, "slimmed down " # stem " to %d\n", stem ## max);/*D*/\	455	fprintf (stderr, "slimmed down " # stem " to %d\n", stem ## max);/*D*/\
371	}	456	}
		457	#endif
372		458
373	#define array_free(stem, idx) \	459	#define array_free(stem, idx) \
374	ev_free (stem ## s idx); stem ## cnt idx = stem ## max idx = 0;	460	ev_free (stem ## s idx); stem ## cnt idx = stem ## max idx = 0;
375		461
376	/*****************************************************************************/	462	/*****************************************************************************/
377		463
378	static void	464	void noinline
		465	ev_feed_event (EV_P_ void *w, int revents)
		466	{
		467	W w_ = (W)w;
		468	int pri = ABSPRI (w_);
		469
		470	if (expect_false (w_->pending))
		471	pendings [pri][w_->pending - 1].events |= revents;
		472	else
		473	{
		474	w_->pending = ++pendingcnt [pri];
		475	array_needsize (ANPENDING, pendings [pri], pendingmax [pri], w_->pending, EMPTY2);
		476	pendings [pri][w_->pending - 1].w = w_;
		477	pendings [pri][w_->pending - 1].events = revents;
		478	}
		479	}
		480
		481	void inline_speed
		482	queue_events (EV_P_ W *events, int eventcnt, int type)
		483	{
		484	int i;
		485
		486	for (i = 0; i < eventcnt; ++i)
		487	ev_feed_event (EV_A_ events [i], type);
		488	}
		489
		490	/*****************************************************************************/
		491
		492	void inline_size
379	anfds_init (ANFD *base, int count)	493	anfds_init (ANFD *base, int count)
380	{	494	{
381	while (count--)	495	while (count--)
382	{	496	{
383	base->head = 0;	497	base->head = 0;
…		…
386		500
387	++base;	501	++base;
388	}	502	}
389	}	503	}
390		504
391	void	505	void inline_speed
392	ev_feed_event (EV_P_ void *w, int revents)
393	{
394	W w_ = (W)w;
395
396	if (expect_false (w_->pending))
397	{
398	pendings [ABSPRI (w_)][w_->pending - 1].events |= revents;
399	return;
400	}
401
402	w_->pending = ++pendingcnt [ABSPRI (w_)];
403	array_needsize (ANPENDING, pendings [ABSPRI (w_)], pendingmax [ABSPRI (w_)], pendingcnt [ABSPRI (w_)], EMPTY2);
404	pendings [ABSPRI (w_)][w_->pending - 1].w = w_;
405	pendings [ABSPRI (w_)][w_->pending - 1].events = revents;
406	}
407
408	static void
409	queue_events (EV_P_ W *events, int eventcnt, int type)
410	{
411	int i;
412
413	for (i = 0; i < eventcnt; ++i)
414	ev_feed_event (EV_A_ events [i], type);
415	}
416
417	inline void
418	fd_event (EV_P_ int fd, int revents)	506	fd_event (EV_P_ int fd, int revents)
419	{	507	{
420	ANFD *anfd = anfds + fd;	508	ANFD *anfd = anfds + fd;
421	struct ev_io *w;	509	ev_io *w;
422		510
423	for (w = (struct ev_io *)anfd->head; w; w = (struct ev_io *)((WL)w)->next)	511	for (w = (ev_io *)anfd->head; w; w = (ev_io *)((WL)w)->next)
424	{	512	{
425	int ev = w->events & revents;	513	int ev = w->events & revents;
426		514
427	if (ev)	515	if (ev)
428	ev_feed_event (EV_A_ (W)w, ev);	516	ev_feed_event (EV_A_ (W)w, ev);
…		…
430	}	518	}
431		519
432	void	520	void
433	ev_feed_fd_event (EV_P_ int fd, int revents)	521	ev_feed_fd_event (EV_P_ int fd, int revents)
434	{	522	{
		523	if (fd >= 0 && fd < anfdmax)
435	fd_event (EV_A_ fd, revents);	524	fd_event (EV_A_ fd, revents);
436	}	525	}
437		526
438	/*****************************************************************************/	527	void inline_size
439
440	inline void
441	fd_reify (EV_P)	528	fd_reify (EV_P)
442	{	529	{
443	int i;	530	int i;
444		531
445	for (i = 0; i < fdchangecnt; ++i)	532	for (i = 0; i < fdchangecnt; ++i)
446	{	533	{
447	int fd = fdchanges [i];	534	int fd = fdchanges [i];
448	ANFD *anfd = anfds + fd;	535	ANFD *anfd = anfds + fd;
449	struct ev_io *w;	536	ev_io *w;
450		537
451	int events = 0;	538	int events = 0;
452		539
453	for (w = (struct ev_io *)anfd->head; w; w = (struct ev_io *)((WL)w)->next)	540	for (w = (ev_io *)anfd->head; w; w = (ev_io *)((WL)w)->next)
454	events |= w->events;	541	events |= w->events;
455		542
456	#if EV_SELECT_IS_WINSOCKET	543	#if EV_SELECT_IS_WINSOCKET
457	if (events)	544	if (events)
458	{	545	{
…		…
469	}	556	}
470		557
471	fdchangecnt = 0;	558	fdchangecnt = 0;
472	}	559	}
473		560
474	static void	561	void inline_size
475	fd_change (EV_P_ int fd)	562	fd_change (EV_P_ int fd, int flags)
476	{	563	{
477	if (expect_false (anfds [fd].reify))	564	unsigned char reify = anfds [fd].reify;
478	return;
479
480	anfds [fd].reify = 1;	565	anfds [fd].reify |= flags | 1;
481		566
		567	if (expect_true (!reify))
		568	{
482	++fdchangecnt;	569	++fdchangecnt;
483	array_needsize (int, fdchanges, fdchangemax, fdchangecnt, EMPTY2);	570	array_needsize (int, fdchanges, fdchangemax, fdchangecnt, EMPTY2);
484	fdchanges [fdchangecnt - 1] = fd;	571	fdchanges [fdchangecnt - 1] = fd;
		572	}
485	}	573	}
486		574
487	static void	575	void inline_speed
488	fd_kill (EV_P_ int fd)	576	fd_kill (EV_P_ int fd)
489	{	577	{
490	struct ev_io *w;	578	ev_io *w;
491		579
492	while ((w = (struct ev_io *)anfds [fd].head))	580	while ((w = (ev_io *)anfds [fd].head))
493	{	581	{
494	ev_io_stop (EV_A_ w);	582	ev_io_stop (EV_A_ w);
495	ev_feed_event (EV_A_ (W)w, EV_ERROR | EV_READ | EV_WRITE);	583	ev_feed_event (EV_A_ (W)w, EV_ERROR | EV_READ | EV_WRITE);
496	}	584	}
497	}	585	}
498		586
499	inline int	587	int inline_size
500	fd_valid (int fd)	588	fd_valid (int fd)
501	{	589	{
502	#ifdef _WIN32	590	#ifdef _WIN32
503	return _get_osfhandle (fd) != -1;	591	return _get_osfhandle (fd) != -1;
504	#else	592	#else
505	return fcntl (fd, F_GETFD) != -1;	593	return fcntl (fd, F_GETFD) != -1;
506	#endif	594	#endif
507	}	595	}
508		596
509	/* called on EBADF to verify fds */	597	/* called on EBADF to verify fds */
510	static void	598	static void noinline
511	fd_ebadf (EV_P)	599	fd_ebadf (EV_P)
512	{	600	{
513	int fd;	601	int fd;
514		602
515	for (fd = 0; fd < anfdmax; ++fd)	603	for (fd = 0; fd < anfdmax; ++fd)
…		…
517	if (!fd_valid (fd) == -1 && errno == EBADF)	605	if (!fd_valid (fd) == -1 && errno == EBADF)
518	fd_kill (EV_A_ fd);	606	fd_kill (EV_A_ fd);
519	}	607	}
520		608
521	/* called on ENOMEM in select/poll to kill some fds and retry */	609	/* called on ENOMEM in select/poll to kill some fds and retry */
522	static void	610	static void noinline
523	fd_enomem (EV_P)	611	fd_enomem (EV_P)
524	{	612	{
525	int fd;	613	int fd;
526		614
527	for (fd = anfdmax; fd--; )	615	for (fd = anfdmax; fd--; )
…		…
531	return;	619	return;
532	}	620	}
533	}	621	}
534		622
535	/* usually called after fork if backend needs to re-arm all fds from scratch */	623	/* usually called after fork if backend needs to re-arm all fds from scratch */
536	static void	624	static void noinline
537	fd_rearm_all (EV_P)	625	fd_rearm_all (EV_P)
538	{	626	{
539	int fd;	627	int fd;
540		628
541	/* this should be highly optimised to not do anything but set a flag */
542	for (fd = 0; fd < anfdmax; ++fd)	629	for (fd = 0; fd < anfdmax; ++fd)
543	if (anfds [fd].events)	630	if (anfds [fd].events)
544	{	631	{
545	anfds [fd].events = 0;	632	anfds [fd].events = 0;
546	fd_change (EV_A_ fd);	633	fd_change (EV_A_ fd, EV_IOFDSET);
547	}	634	}
548	}	635	}
549		636
550	/*****************************************************************************/	637	/*****************************************************************************/
551		638
552	static void	639	void inline_speed
553	upheap (WT *heap, int k)	640	upheap (WT *heap, int k)
554	{	641	{
555	WT w = heap [k];	642	WT w = heap [k];
556		643
557	while (k && heap [k >> 1]->at > w->at)	644	while (k)
558	{	645	{
		646	int p = (k - 1) >> 1;
		647
		648	if (heap [p]->at <= w->at)
		649	break;
		650
559	heap [k] = heap [k >> 1];	651	heap [k] = heap [p];
560	((W)heap [k])->active = k + 1;	652	((W)heap [k])->active = k + 1;
561	k >>= 1;	653	k = p;
562	}	654	}
563		655
564	heap [k] = w;	656	heap [k] = w;
565	((W)heap [k])->active = k + 1;	657	((W)heap [k])->active = k + 1;
566
567	}	658	}
568		659
569	static void	660	void inline_speed
570	downheap (WT *heap, int N, int k)	661	downheap (WT *heap, int N, int k)
571	{	662	{
572	WT w = heap [k];	663	WT w = heap [k];
573		664
574	while (k < (N >> 1))	665	for (;;)
575	{	666	{
576	int j = k << 1;	667	int c = (k << 1) + 1;
577		668
578	if (j + 1 < N && heap [j]->at > heap [j + 1]->at)	669	if (c >= N)
579	++j;
580
581	if (w->at <= heap [j]->at)
582	break;	670	break;
583		671
		672	c += c + 1 < N && heap [c]->at > heap [c + 1]->at
		673	? 1 : 0;
		674
		675	if (w->at <= heap [c]->at)
		676	break;
		677
584	heap [k] = heap [j];	678	heap [k] = heap [c];
585	((W)heap [k])->active = k + 1;	679	((W)heap [k])->active = k + 1;
		680
586	k = j;	681	k = c;
587	}	682	}
588		683
589	heap [k] = w;	684	heap [k] = w;
590	((W)heap [k])->active = k + 1;	685	((W)heap [k])->active = k + 1;
591	}	686	}
592		687
593	inline void	688	void inline_size
594	adjustheap (WT *heap, int N, int k)	689	adjustheap (WT *heap, int N, int k)
595	{	690	{
596	upheap (heap, k);	691	upheap (heap, k);
597	downheap (heap, N, k);	692	downheap (heap, N, k);
598	}	693	}
…		…
608	static ANSIG *signals;	703	static ANSIG *signals;
609	static int signalmax;	704	static int signalmax;
610		705
611	static int sigpipe [2];	706	static int sigpipe [2];
612	static sig_atomic_t volatile gotsig;	707	static sig_atomic_t volatile gotsig;
613	static struct ev_io sigev;	708	static ev_io sigev;
614		709
615	static void	710	void inline_size
616	signals_init (ANSIG *base, int count)	711	signals_init (ANSIG *base, int count)
617	{	712	{
618	while (count--)	713	while (count--)
619	{	714	{
620	base->head = 0;	715	base->head = 0;
…		…
640	write (sigpipe [1], &signum, 1);	735	write (sigpipe [1], &signum, 1);
641	errno = old_errno;	736	errno = old_errno;
642	}	737	}
643	}	738	}
644		739
645	void	740	void noinline
646	ev_feed_signal_event (EV_P_ int signum)	741	ev_feed_signal_event (EV_P_ int signum)
647	{	742	{
648	WL w;	743	WL w;
649		744
650	#if EV_MULTIPLICITY	745	#if EV_MULTIPLICITY
…		…
661	for (w = signals [signum].head; w; w = w->next)	756	for (w = signals [signum].head; w; w = w->next)
662	ev_feed_event (EV_A_ (W)w, EV_SIGNAL);	757	ev_feed_event (EV_A_ (W)w, EV_SIGNAL);
663	}	758	}
664		759
665	static void	760	static void
666	sigcb (EV_P_ struct ev_io *iow, int revents)	761	sigcb (EV_P_ ev_io *iow, int revents)
667	{	762	{
668	int signum;	763	int signum;
669		764
670	read (sigpipe [0], &revents, 1);	765	read (sigpipe [0], &revents, 1);
671	gotsig = 0;	766	gotsig = 0;
…		…
673	for (signum = signalmax; signum--; )	768	for (signum = signalmax; signum--; )
674	if (signals [signum].gotsig)	769	if (signals [signum].gotsig)
675	ev_feed_signal_event (EV_A_ signum + 1);	770	ev_feed_signal_event (EV_A_ signum + 1);
676	}	771	}
677		772
678	static void	773	void inline_speed
679	fd_intern (int fd)	774	fd_intern (int fd)
680	{	775	{
681	#ifdef _WIN32	776	#ifdef _WIN32
682	int arg = 1;	777	int arg = 1;
683	ioctlsocket (_get_osfhandle (fd), FIONBIO, &arg);	778	ioctlsocket (_get_osfhandle (fd), FIONBIO, &arg);
…		…
685	fcntl (fd, F_SETFD, FD_CLOEXEC);	780	fcntl (fd, F_SETFD, FD_CLOEXEC);
686	fcntl (fd, F_SETFL, O_NONBLOCK);	781	fcntl (fd, F_SETFL, O_NONBLOCK);
687	#endif	782	#endif
688	}	783	}
689		784
690	static void	785	static void noinline
691	siginit (EV_P)	786	siginit (EV_P)
692	{	787	{
693	fd_intern (sigpipe [0]);	788	fd_intern (sigpipe [0]);
694	fd_intern (sigpipe [1]);	789	fd_intern (sigpipe [1]);
695		790
…		…
698	ev_unref (EV_A); /* child watcher should not keep loop alive */	793	ev_unref (EV_A); /* child watcher should not keep loop alive */
699	}	794	}
700		795
701	/*****************************************************************************/	796	/*****************************************************************************/
702		797
703	static struct ev_child *childs [PID_HASHSIZE];	798	static WL childs [EV_PID_HASHSIZE];
704		799
705	#ifndef _WIN32	800	#ifndef _WIN32
706		801
707	static struct ev_signal childev;	802	static ev_signal childev;
		803
		804	void inline_speed
		805	child_reap (EV_P_ ev_signal *sw, int chain, int pid, int status)
		806	{
		807	ev_child *w;
		808
		809	for (w = (ev_child *)childs [chain & (EV_PID_HASHSIZE - 1)]; w; w = (ev_child *)((WL)w)->next)
		810	if (w->pid == pid || !w->pid)
		811	{
		812	ev_set_priority (w, ev_priority (sw)); /* need to do it *now* */
		813	w->rpid = pid;
		814	w->rstatus = status;
		815	ev_feed_event (EV_A_ (W)w, EV_CHILD);
		816	}
		817	}
708		818
709	#ifndef WCONTINUED	819	#ifndef WCONTINUED
710	# define WCONTINUED 0	820	# define WCONTINUED 0
711	#endif	821	#endif
712		822
713	static void	823	static void
714	child_reap (EV_P_ struct ev_signal *sw, int chain, int pid, int status)
715	{
716	struct ev_child *w;
717
718	for (w = (struct ev_child *)childs [chain & (PID_HASHSIZE - 1)]; w; w = (struct ev_child *)((WL)w)->next)
719	if (w->pid == pid || !w->pid)
720	{
721	ev_priority (w) = ev_priority (sw); /* need to do it *now* */
722	w->rpid = pid;
723	w->rstatus = status;
724	ev_feed_event (EV_A_ (W)w, EV_CHILD);
725	}
726	}
727
728	static void
729	childcb (EV_P_ struct ev_signal *sw, int revents)	824	childcb (EV_P_ ev_signal *sw, int revents)
730	{	825	{
731	int pid, status;	826	int pid, status;
732		827
		828	/* some systems define WCONTINUED but then fail to support it (linux 2.4) */
733	if (0 < (pid = waitpid (-1, &status, WNOHANG | WUNTRACED | WCONTINUED)))	829	if (0 >= (pid = waitpid (-1, &status, WNOHANG | WUNTRACED | WCONTINUED)))
734	{	830	if (!WCONTINUED
		831	|| errno != EINVAL
		832	|| 0 >= (pid = waitpid (-1, &status, WNOHANG | WUNTRACED)))
		833	return;
		834
735	/* make sure we are called again until all childs have been reaped */	835	/* make sure we are called again until all childs have been reaped */
736	/* we need to do it this way so that the callback gets called before we continue */	836	/* we need to do it this way so that the callback gets called before we continue */
737	ev_feed_event (EV_A_ (W)sw, EV_SIGNAL);	837	ev_feed_event (EV_A_ (W)sw, EV_SIGNAL);
738		838
739	child_reap (EV_A_ sw, pid, pid, status);	839	child_reap (EV_A_ sw, pid, pid, status);
		840	if (EV_PID_HASHSIZE > 1)
740	child_reap (EV_A_ sw, 0, pid, status); /* this might trigger a watcher twice, but feed_event catches that */	841	child_reap (EV_A_ sw, 0, pid, status); /* this might trigger a watcher twice, but feed_event catches that */
741	}
742	}	842	}
743		843
744	#endif	844	#endif
745		845
746	/*****************************************************************************/	846	/*****************************************************************************/
…		…
772	{	872	{
773	return EV_VERSION_MINOR;	873	return EV_VERSION_MINOR;
774	}	874	}
775		875
776	/* return true if we are running with elevated privileges and should ignore env variables */	876	/* return true if we are running with elevated privileges and should ignore env variables */
777	static int	877	int inline_size
778	enable_secure (void)	878	enable_secure (void)
779	{	879	{
780	#ifdef _WIN32	880	#ifdef _WIN32
781	return 0;	881	return 0;
782	#else	882	#else
…		…
816		916
817	return flags;	917	return flags;
818	}	918	}
819		919
820	unsigned int	920	unsigned int
		921	ev_embeddable_backends (void)
		922	{
		923	return EVBACKEND_EPOLL
		924	| EVBACKEND_KQUEUE
		925	| EVBACKEND_PORT;
		926	}
		927
		928	unsigned int
821	ev_backend (EV_P)	929	ev_backend (EV_P)
822	{	930	{
823	return backend;	931	return backend;
824	}	932	}
825		933
826	static void	934	unsigned int
		935	ev_loop_count (EV_P)
		936	{
		937	return loop_count;
		938	}
		939
		940	static void noinline
827	loop_init (EV_P_ unsigned int flags)	941	loop_init (EV_P_ unsigned int flags)
828	{	942	{
829	if (!backend)	943	if (!backend)
830	{	944	{
831	#if EV_USE_MONOTONIC	945	#if EV_USE_MONOTONIC
…		…
839	ev_rt_now = ev_time ();	953	ev_rt_now = ev_time ();
840	mn_now = get_clock ();	954	mn_now = get_clock ();
841	now_floor = mn_now;	955	now_floor = mn_now;
842	rtmn_diff = ev_rt_now - mn_now;	956	rtmn_diff = ev_rt_now - mn_now;
843		957
		958	/* pid check not overridable via env */
		959	#ifndef _WIN32
		960	if (flags & EVFLAG_FORKCHECK)
		961	curpid = getpid ();
		962	#endif
		963
844	if (!(flags & EVFLAG_NOENV)	964	if (!(flags & EVFLAG_NOENV)
845	&& !enable_secure ()	965	&& !enable_secure ()
846	&& getenv ("LIBEV_FLAGS"))	966	&& getenv ("LIBEV_FLAGS"))
847	flags = atoi (getenv ("LIBEV_FLAGS"));	967	flags = atoi (getenv ("LIBEV_FLAGS"));
848		968
849	if (!(flags & 0x0000ffffUL))	969	if (!(flags & 0x0000ffffUL))
850	flags |= ev_recommended_backends ();	970	flags |= ev_recommended_backends ();
851		971
852	backend = 0;	972	backend = 0;
		973	backend_fd = -1;
		974	#if EV_USE_INOTIFY
		975	fs_fd = -2;
		976	#endif
		977
853	#if EV_USE_PORT	978	#if EV_USE_PORT
854	if (!backend && (flags & EVBACKEND_PORT )) backend = port_init (EV_A_ flags);	979	if (!backend && (flags & EVBACKEND_PORT )) backend = port_init (EV_A_ flags);
855	#endif	980	#endif
856	#if EV_USE_KQUEUE	981	#if EV_USE_KQUEUE
857	if (!backend && (flags & EVBACKEND_KQUEUE)) backend = kqueue_init (EV_A_ flags);	982	if (!backend && (flags & EVBACKEND_KQUEUE)) backend = kqueue_init (EV_A_ flags);
…		…
869	ev_init (&sigev, sigcb);	994	ev_init (&sigev, sigcb);
870	ev_set_priority (&sigev, EV_MAXPRI);	995	ev_set_priority (&sigev, EV_MAXPRI);
871	}	996	}
872	}	997	}
873		998
874	static void	999	static void noinline
875	loop_destroy (EV_P)	1000	loop_destroy (EV_P)
876	{	1001	{
877	int i;	1002	int i;
		1003
		1004	#if EV_USE_INOTIFY
		1005	if (fs_fd >= 0)
		1006	close (fs_fd);
		1007	#endif
		1008
		1009	if (backend_fd >= 0)
		1010	close (backend_fd);
878		1011
879	#if EV_USE_PORT	1012	#if EV_USE_PORT
880	if (backend == EVBACKEND_PORT ) port_destroy (EV_A);	1013	if (backend == EVBACKEND_PORT ) port_destroy (EV_A);
881	#endif	1014	#endif
882	#if EV_USE_KQUEUE	1015	#if EV_USE_KQUEUE
…		…
891	#if EV_USE_SELECT	1024	#if EV_USE_SELECT
892	if (backend == EVBACKEND_SELECT) select_destroy (EV_A);	1025	if (backend == EVBACKEND_SELECT) select_destroy (EV_A);
893	#endif	1026	#endif
894		1027
895	for (i = NUMPRI; i--; )	1028	for (i = NUMPRI; i--; )
		1029	{
896	array_free (pending, [i]);	1030	array_free (pending, [i]);
		1031	#if EV_IDLE_ENABLE
		1032	array_free (idle, [i]);
		1033	#endif
		1034	}
897		1035
898	/* have to use the microsoft-never-gets-it-right macro */	1036	/* have to use the microsoft-never-gets-it-right macro */
899	array_free (fdchange, EMPTY0);	1037	array_free (fdchange, EMPTY);
900	array_free (timer, EMPTY0);	1038	array_free (timer, EMPTY);
901	#if EV_PERIODICS	1039	#if EV_PERIODIC_ENABLE
902	array_free (periodic, EMPTY0);	1040	array_free (periodic, EMPTY);
903	#endif	1041	#endif
904	array_free (idle, EMPTY0);
905	array_free (prepare, EMPTY0);	1042	array_free (prepare, EMPTY);
906	array_free (check, EMPTY0);	1043	array_free (check, EMPTY);
907		1044
908	backend = 0;	1045	backend = 0;
909	}	1046	}
910		1047
911	static void	1048	void inline_size infy_fork (EV_P);
		1049
		1050	void inline_size
912	loop_fork (EV_P)	1051	loop_fork (EV_P)
913	{	1052	{
914	#if EV_USE_PORT	1053	#if EV_USE_PORT
915	if (backend == EVBACKEND_PORT ) port_fork (EV_A);	1054	if (backend == EVBACKEND_PORT ) port_fork (EV_A);
916	#endif	1055	#endif
917	#if EV_USE_KQUEUE	1056	#if EV_USE_KQUEUE
918	if (backend == EVBACKEND_KQUEUE) kqueue_fork (EV_A);	1057	if (backend == EVBACKEND_KQUEUE) kqueue_fork (EV_A);
919	#endif	1058	#endif
920	#if EV_USE_EPOLL	1059	#if EV_USE_EPOLL
921	if (backend == EVBACKEND_EPOLL ) epoll_fork (EV_A);	1060	if (backend == EVBACKEND_EPOLL ) epoll_fork (EV_A);
		1061	#endif
		1062	#if EV_USE_INOTIFY
		1063	infy_fork (EV_A);
922	#endif	1064	#endif
923		1065
924	if (ev_is_active (&sigev))	1066	if (ev_is_active (&sigev))
925	{	1067	{
926	/* default loop */	1068	/* default loop */
…		…
1042	postfork = 1;	1184	postfork = 1;
1043	}	1185	}
1044		1186
1045	/*****************************************************************************/	1187	/*****************************************************************************/
1046		1188
1047	static int	1189	void
1048	any_pending (EV_P)	1190	ev_invoke (EV_P_ void *w, int revents)
1049	{	1191	{
1050	int pri;	1192	EV_CB_INVOKE ((W)w, revents);
1051
1052	for (pri = NUMPRI; pri--; )
1053	if (pendingcnt [pri])
1054	return 1;
1055
1056	return 0;
1057	}	1193	}
1058		1194
1059	inline void	1195	void inline_speed
1060	call_pending (EV_P)	1196	call_pending (EV_P)
1061	{	1197	{
1062	int pri;	1198	int pri;
1063		1199
1064	for (pri = NUMPRI; pri--; )	1200	for (pri = NUMPRI; pri--; )
…		…
1066	{	1202	{
1067	ANPENDING *p = pendings [pri] + --pendingcnt [pri];	1203	ANPENDING *p = pendings [pri] + --pendingcnt [pri];
1068		1204
1069	if (expect_true (p->w))	1205	if (expect_true (p->w))
1070	{	1206	{
		1207	/*assert (("non-pending watcher on pending list", p->w->pending));*/
		1208
1071	p->w->pending = 0;	1209	p->w->pending = 0;
1072	EV_CB_INVOKE (p->w, p->events);	1210	EV_CB_INVOKE (p->w, p->events);
1073	}	1211	}
1074	}	1212	}
1075	}	1213	}
1076		1214
1077	inline void	1215	void inline_size
1078	timers_reify (EV_P)	1216	timers_reify (EV_P)
1079	{	1217	{
1080	while (timercnt && ((WT)timers [0])->at <= mn_now)	1218	while (timercnt && ((WT)timers [0])->at <= mn_now)
1081	{	1219	{
1082	struct ev_timer *w = timers [0];	1220	ev_timer *w = (ev_timer *)timers [0];
1083		1221
1084	assert (("inactive timer on timer heap detected", ev_is_active (w)));	1222	/*assert (("inactive timer on timer heap detected", ev_is_active (w)));*/
1085		1223
1086	/* first reschedule or stop timer */	1224	/* first reschedule or stop timer */
1087	if (w->repeat)	1225	if (w->repeat)
1088	{	1226	{
1089	assert (("negative ev_timer repeat value found while processing timers", w->repeat > 0.));	1227	assert (("negative ev_timer repeat value found while processing timers", w->repeat > 0.));
1090		1228
1091	((WT)w)->at += w->repeat;	1229	((WT)w)->at += w->repeat;
1092	if (((WT)w)->at < mn_now)	1230	if (((WT)w)->at < mn_now)
1093	((WT)w)->at = mn_now;	1231	((WT)w)->at = mn_now;
1094		1232
1095	downheap ((WT *)timers, timercnt, 0);	1233	downheap (timers, timercnt, 0);
1096	}	1234	}
1097	else	1235	else
1098	ev_timer_stop (EV_A_ w); /* nonrepeating: stop timer */	1236	ev_timer_stop (EV_A_ w); /* nonrepeating: stop timer */
1099		1237
1100	ev_feed_event (EV_A_ (W)w, EV_TIMEOUT);	1238	ev_feed_event (EV_A_ (W)w, EV_TIMEOUT);
1101	}	1239	}
1102	}	1240	}
1103		1241
1104	#if EV_PERIODICS	1242	#if EV_PERIODIC_ENABLE
1105	inline void	1243	void inline_size
1106	periodics_reify (EV_P)	1244	periodics_reify (EV_P)
1107	{	1245	{
1108	while (periodiccnt && ((WT)periodics [0])->at <= ev_rt_now)	1246	while (periodiccnt && ((WT)periodics [0])->at <= ev_rt_now)
1109	{	1247	{
1110	struct ev_periodic *w = periodics [0];	1248	ev_periodic *w = (ev_periodic *)periodics [0];
1111		1249
1112	assert (("inactive timer on periodic heap detected", ev_is_active (w)));	1250	/*assert (("inactive timer on periodic heap detected", ev_is_active (w)));*/
1113		1251
1114	/* first reschedule or stop timer */	1252	/* first reschedule or stop timer */
1115	if (w->reschedule_cb)	1253	if (w->reschedule_cb)
1116	{	1254	{
1117	((WT)w)->at = w->reschedule_cb (w, ev_rt_now + 0.0001);	1255	((WT)w)->at = w->reschedule_cb (w, ev_rt_now + TIME_EPSILON);
1118	assert (("ev_periodic reschedule callback returned time in the past", ((WT)w)->at > ev_rt_now));	1256	assert (("ev_periodic reschedule callback returned time in the past", ((WT)w)->at > ev_rt_now));
1119	downheap ((WT *)periodics, periodiccnt, 0);	1257	downheap (periodics, periodiccnt, 0);
1120	}	1258	}
1121	else if (w->interval)	1259	else if (w->interval)
1122	{	1260	{
1123	((WT)w)->at += floor ((ev_rt_now - ((WT)w)->at) / w->interval + 1.) * w->interval;	1261	((WT)w)->at = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval;
		1262	if (((WT)w)->at - ev_rt_now <= TIME_EPSILON) ((WT)w)->at += w->interval;
1124	assert (("ev_periodic timeout in the past detected while processing timers, negative interval?", ((WT)w)->at > ev_rt_now));	1263	assert (("ev_periodic timeout in the past detected while processing timers, negative interval?", ((WT)w)->at > ev_rt_now));
1125	downheap ((WT *)periodics, periodiccnt, 0);	1264	downheap (periodics, periodiccnt, 0);
1126	}	1265	}
1127	else	1266	else
1128	ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */	1267	ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */
1129		1268
1130	ev_feed_event (EV_A_ (W)w, EV_PERIODIC);	1269	ev_feed_event (EV_A_ (W)w, EV_PERIODIC);
1131	}	1270	}
1132	}	1271	}
1133		1272
1134	static void	1273	static void noinline
1135	periodics_reschedule (EV_P)	1274	periodics_reschedule (EV_P)
1136	{	1275	{
1137	int i;	1276	int i;
1138		1277
1139	/* adjust periodics after time jump */	1278	/* adjust periodics after time jump */
1140	for (i = 0; i < periodiccnt; ++i)	1279	for (i = 0; i < periodiccnt; ++i)
1141	{	1280	{
1142	struct ev_periodic *w = periodics [i];	1281	ev_periodic *w = (ev_periodic *)periodics [i];
1143		1282
1144	if (w->reschedule_cb)	1283	if (w->reschedule_cb)
1145	((WT)w)->at = w->reschedule_cb (w, ev_rt_now);	1284	((WT)w)->at = w->reschedule_cb (w, ev_rt_now);
1146	else if (w->interval)	1285	else if (w->interval)
1147	((WT)w)->at += ceil ((ev_rt_now - ((WT)w)->at) / w->interval) * w->interval;	1286	((WT)w)->at = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval;
1148	}	1287	}
1149		1288
1150	/* now rebuild the heap */	1289	/* now rebuild the heap */
1151	for (i = periodiccnt >> 1; i--; )	1290	for (i = periodiccnt >> 1; i--; )
1152	downheap ((WT *)periodics, periodiccnt, i);	1291	downheap (periodics, periodiccnt, i);
1153	}	1292	}
1154	#endif	1293	#endif
1155		1294
1156	inline int	1295	#if EV_IDLE_ENABLE
1157	time_update_monotonic (EV_P)	1296	void inline_size
		1297	idle_reify (EV_P)
1158	{	1298	{
		1299	if (expect_false (idleall))
		1300	{
		1301	int pri;
		1302
		1303	for (pri = NUMPRI; pri--; )
		1304	{
		1305	if (pendingcnt [pri])
		1306	break;
		1307
		1308	if (idlecnt [pri])
		1309	{
		1310	queue_events (EV_A_ (W *)idles [pri], idlecnt [pri], EV_IDLE);
		1311	break;
		1312	}
		1313	}
		1314	}
		1315	}
		1316	#endif
		1317
		1318	void inline_speed
		1319	time_update (EV_P_ ev_tstamp max_block)
		1320	{
		1321	int i;
		1322
		1323	#if EV_USE_MONOTONIC
		1324	if (expect_true (have_monotonic))
		1325	{
		1326	ev_tstamp odiff = rtmn_diff;
		1327
1159	mn_now = get_clock ();	1328	mn_now = get_clock ();
1160		1329
		1330	/* only fetch the realtime clock every 0.5*MIN_TIMEJUMP seconds */
		1331	/* interpolate in the meantime */
1161	if (expect_true (mn_now - now_floor < MIN_TIMEJUMP * .5))	1332	if (expect_true (mn_now - now_floor < MIN_TIMEJUMP * .5))
1162	{	1333	{
1163	ev_rt_now = rtmn_diff + mn_now;	1334	ev_rt_now = rtmn_diff + mn_now;
1164	return 0;	1335	return;
1165	}	1336	}
1166	else	1337
1167	{
1168	now_floor = mn_now;	1338	now_floor = mn_now;
1169	ev_rt_now = ev_time ();	1339	ev_rt_now = ev_time ();
1170	return 1;
1171	}
1172	}
1173		1340
1174	inline void	1341	/* loop a few times, before making important decisions.
1175	time_update (EV_P)	1342	* on the choice of "4": one iteration isn't enough,
1176	{	1343	* in case we get preempted during the calls to
1177	int i;	1344	* ev_time and get_clock. a second call is almost guaranteed
1178		1345	* to succeed in that case, though. and looping a few more times
1179	#if EV_USE_MONOTONIC	1346	* doesn't hurt either as we only do this on time-jumps or
1180	if (expect_true (have_monotonic))	1347	* in the unlikely event of having been preempted here.
1181	{	1348	*/
1182	if (time_update_monotonic (EV_A))	1349	for (i = 4; --i; )
1183	{	1350	{
1184	ev_tstamp odiff = rtmn_diff;
1185
1186	for (i = 4; --i; ) /* loop a few times, before making important decisions */
1187	{
1188	rtmn_diff = ev_rt_now - mn_now;	1351	rtmn_diff = ev_rt_now - mn_now;
1189		1352
1190	if (fabs (odiff - rtmn_diff) < MIN_TIMEJUMP)	1353	if (fabs (odiff - rtmn_diff) < MIN_TIMEJUMP)
1191	return; /* all is well */	1354	return; /* all is well */
1192		1355
1193	ev_rt_now = ev_time ();	1356	ev_rt_now = ev_time ();
1194	mn_now = get_clock ();	1357	mn_now = get_clock ();
1195	now_floor = mn_now;	1358	now_floor = mn_now;
1196	}	1359	}
1197		1360
1198	# if EV_PERIODICS	1361	# if EV_PERIODIC_ENABLE
		1362	periodics_reschedule (EV_A);
		1363	# endif
		1364	/* no timer adjustment, as the monotonic clock doesn't jump */
		1365	/* timers_reschedule (EV_A_ rtmn_diff - odiff) */
		1366	}
		1367	else
		1368	#endif
		1369	{
		1370	ev_rt_now = ev_time ();
		1371
		1372	if (expect_false (mn_now > ev_rt_now || ev_rt_now > mn_now + max_block + MIN_TIMEJUMP))
		1373	{
		1374	#if EV_PERIODIC_ENABLE
1199	periodics_reschedule (EV_A);	1375	periodics_reschedule (EV_A);
1200	# endif	1376	#endif
1201	/* no timer adjustment, as the monotonic clock doesn't jump */
1202	/* timers_reschedule (EV_A_ rtmn_diff - odiff) */
1203	}
1204	}
1205	else
1206	#endif
1207	{
1208	ev_rt_now = ev_time ();
1209
1210	if (expect_false (mn_now > ev_rt_now || mn_now < ev_rt_now - MAX_BLOCKTIME - MIN_TIMEJUMP))
1211	{
1212	#if EV_PERIODICS
1213	periodics_reschedule (EV_A);
1214	#endif
1215
1216	/* adjust timers. this is easy, as the offset is the same for all */	1377	/* adjust timers. this is easy, as the offset is the same for all of them */
1217	for (i = 0; i < timercnt; ++i)	1378	for (i = 0; i < timercnt; ++i)
1218	((WT)timers [i])->at += ev_rt_now - mn_now;	1379	((WT)timers [i])->at += ev_rt_now - mn_now;
1219	}	1380	}
1220		1381
1221	mn_now = ev_rt_now;	1382	mn_now = ev_rt_now;
…		…
1237	static int loop_done;	1398	static int loop_done;
1238		1399
1239	void	1400	void
1240	ev_loop (EV_P_ int flags)	1401	ev_loop (EV_P_ int flags)
1241	{	1402	{
1242	double block;
1243	loop_done = flags & (EVLOOP_ONESHOT | EVLOOP_NONBLOCK) ? 1 : 0;	1403	loop_done = flags & (EVLOOP_ONESHOT | EVLOOP_NONBLOCK)
		1404	? EVUNLOOP_ONE
		1405	: EVUNLOOP_CANCEL;
1244		1406
1245	while (activecnt)	1407	call_pending (EV_A); /* in case we recurse, ensure ordering stays nice and clean */
		1408
		1409	do
1246	{	1410	{
		1411	#ifndef _WIN32
		1412	if (expect_false (curpid)) /* penalise the forking check even more */
		1413	if (expect_false (getpid () != curpid))
		1414	{
		1415	curpid = getpid ();
		1416	postfork = 1;
		1417	}
		1418	#endif
		1419
		1420	#if EV_FORK_ENABLE
		1421	/* we might have forked, so queue fork handlers */
		1422	if (expect_false (postfork))
		1423	if (forkcnt)
		1424	{
		1425	queue_events (EV_A_ (W *)forks, forkcnt, EV_FORK);
		1426	call_pending (EV_A);
		1427	}
		1428	#endif
		1429
1247	/* queue check watchers (and execute them) */	1430	/* queue prepare watchers (and execute them) */
1248	if (expect_false (preparecnt))	1431	if (expect_false (preparecnt))
1249	{	1432	{
1250	queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE);	1433	queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE);
1251	call_pending (EV_A);	1434	call_pending (EV_A);
1252	}	1435	}
1253		1436
		1437	if (expect_false (!activecnt))
		1438	break;
		1439
1254	/* we might have forked, so reify kernel state if necessary */	1440	/* we might have forked, so reify kernel state if necessary */
1255	if (expect_false (postfork))	1441	if (expect_false (postfork))
1256	loop_fork (EV_A);	1442	loop_fork (EV_A);
1257		1443
1258	/* update fd-related kernel structures */	1444	/* update fd-related kernel structures */
1259	fd_reify (EV_A);	1445	fd_reify (EV_A);
1260		1446
1261	/* calculate blocking time */	1447	/* calculate blocking time */
		1448	{
		1449	ev_tstamp block;
1262		1450
1263	/* we only need this for !monotonic clock or timers, but as we basically	1451	if (expect_false (flags & EVLOOP_NONBLOCK || idleall || !activecnt))
1264	always have timers, we just calculate it always */	1452	block = 0.; /* do not block at all */
1265	#if EV_USE_MONOTONIC
1266	if (expect_true (have_monotonic))
1267	time_update_monotonic (EV_A);
1268	else	1453	else
1269	#endif
1270	{	1454	{
1271	ev_rt_now = ev_time ();	1455	/* update time to cancel out callback processing overhead */
1272	mn_now = ev_rt_now;	1456	time_update (EV_A_ 1e100);
1273	}
1274		1457
1275	if (flags & EVLOOP_NONBLOCK || idlecnt)
1276	block = 0.;
1277	else
1278	{
1279	block = MAX_BLOCKTIME;	1458	block = MAX_BLOCKTIME;
1280		1459
1281	if (timercnt)	1460	if (timercnt)
1282	{	1461	{
1283	ev_tstamp to = ((WT)timers [0])->at - mn_now + backend_fudge;	1462	ev_tstamp to = ((WT)timers [0])->at - mn_now + backend_fudge;
1284	if (block > to) block = to;	1463	if (block > to) block = to;
1285	}	1464	}
1286		1465
1287	#if EV_PERIODICS	1466	#if EV_PERIODIC_ENABLE
1288	if (periodiccnt)	1467	if (periodiccnt)
1289	{	1468	{
1290	ev_tstamp to = ((WT)periodics [0])->at - ev_rt_now + backend_fudge;	1469	ev_tstamp to = ((WT)periodics [0])->at - ev_rt_now + backend_fudge;
1291	if (block > to) block = to;	1470	if (block > to) block = to;
1292	}	1471	}
1293	#endif	1472	#endif
1294		1473
1295	if (expect_false (block < 0.)) block = 0.;	1474	if (expect_false (block < 0.)) block = 0.;
1296	}	1475	}
1297		1476
		1477	++loop_count;
1298	backend_poll (EV_A_ block);	1478	backend_poll (EV_A_ block);
1299		1479
1300	/* update ev_rt_now, do magic */	1480	/* update ev_rt_now, do magic */
1301	time_update (EV_A);	1481	time_update (EV_A_ block);
		1482	}
1302		1483
1303	/* queue pending timers and reschedule them */	1484	/* queue pending timers and reschedule them */
1304	timers_reify (EV_A); /* relative timers called last */	1485	timers_reify (EV_A); /* relative timers called last */
1305	#if EV_PERIODICS	1486	#if EV_PERIODIC_ENABLE
1306	periodics_reify (EV_A); /* absolute timers called first */	1487	periodics_reify (EV_A); /* absolute timers called first */
1307	#endif	1488	#endif
1308		1489
		1490	#if EV_IDLE_ENABLE
1309	/* queue idle watchers unless io or timers are pending */	1491	/* queue idle watchers unless other events are pending */
1310	if (idlecnt && !any_pending (EV_A))	1492	idle_reify (EV_A);
1311	queue_events (EV_A_ (W *)idles, idlecnt, EV_IDLE);	1493	#endif
1312		1494
1313	/* queue check watchers, to be executed first */	1495	/* queue check watchers, to be executed first */
1314	if (expect_false (checkcnt))	1496	if (expect_false (checkcnt))
1315	queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK);	1497	queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK);
1316		1498
1317	call_pending (EV_A);	1499	call_pending (EV_A);
1318		1500
1319	if (expect_false (loop_done))
1320	break;
1321	}	1501	}
		1502	while (expect_true (activecnt && !loop_done));
1322		1503
1323	if (loop_done != 2)	1504	if (loop_done == EVUNLOOP_ONE)
1324	loop_done = 0;	1505	loop_done = EVUNLOOP_CANCEL;
1325	}	1506	}
1326		1507
1327	void	1508	void
1328	ev_unloop (EV_P_ int how)	1509	ev_unloop (EV_P_ int how)
1329	{	1510	{
1330	loop_done = how;	1511	loop_done = how;
1331	}	1512	}
1332		1513
1333	/*****************************************************************************/	1514	/*****************************************************************************/
1334		1515
1335	inline void	1516	void inline_size
1336	wlist_add (WL *head, WL elem)	1517	wlist_add (WL *head, WL elem)
1337	{	1518	{
1338	elem->next = *head;	1519	elem->next = *head;
1339	*head = elem;	1520	*head = elem;
1340	}	1521	}
1341		1522
1342	inline void	1523	void inline_size
1343	wlist_del (WL *head, WL elem)	1524	wlist_del (WL *head, WL elem)
1344	{	1525	{
1345	while (*head)	1526	while (*head)
1346	{	1527	{
1347	if (*head == elem)	1528	if (*head == elem)
…		…
1352		1533
1353	head = &(*head)->next;	1534	head = &(*head)->next;
1354	}	1535	}
1355	}	1536	}
1356		1537
1357	inline void	1538	void inline_speed
1358	ev_clear_pending (EV_P_ W w)	1539	clear_pending (EV_P_ W w)
1359	{	1540	{
1360	if (w->pending)	1541	if (w->pending)
1361	{	1542	{
1362	pendings [ABSPRI (w)][w->pending - 1].w = 0;	1543	pendings [ABSPRI (w)][w->pending - 1].w = 0;
1363	w->pending = 0;	1544	w->pending = 0;
1364	}	1545	}
1365	}	1546	}
1366		1547
1367	inline void	1548	int
		1549	ev_clear_pending (EV_P_ void *w)
		1550	{
		1551	W w_ = (W)w;
		1552	int pending = w_->pending;
		1553
		1554	if (expect_true (pending))
		1555	{
		1556	ANPENDING *p = pendings [ABSPRI (w_)] + pending - 1;
		1557	w_->pending = 0;
		1558	p->w = 0;
		1559	return p->events;
		1560	}
		1561	else
		1562	return 0;
		1563	}
		1564
		1565	void inline_size
		1566	pri_adjust (EV_P_ W w)
		1567	{
		1568	int pri = w->priority;
		1569	pri = pri < EV_MINPRI ? EV_MINPRI : pri;
		1570	pri = pri > EV_MAXPRI ? EV_MAXPRI : pri;
		1571	w->priority = pri;
		1572	}
		1573
		1574	void inline_speed
1368	ev_start (EV_P_ W w, int active)	1575	ev_start (EV_P_ W w, int active)
1369	{	1576	{
1370	if (w->priority < EV_MINPRI) w->priority = EV_MINPRI;	1577	pri_adjust (EV_A_ w);
1371	if (w->priority > EV_MAXPRI) w->priority = EV_MAXPRI;
1372
1373	w->active = active;	1578	w->active = active;
1374	ev_ref (EV_A);	1579	ev_ref (EV_A);
1375	}	1580	}
1376		1581
1377	inline void	1582	void inline_size
1378	ev_stop (EV_P_ W w)	1583	ev_stop (EV_P_ W w)
1379	{	1584	{
1380	ev_unref (EV_A);	1585	ev_unref (EV_A);
1381	w->active = 0;	1586	w->active = 0;
1382	}	1587	}
1383		1588
1384	/*****************************************************************************/	1589	/*****************************************************************************/
1385		1590
1386	void	1591	void noinline
1387	ev_io_start (EV_P_ struct ev_io *w)	1592	ev_io_start (EV_P_ ev_io *w)
1388	{	1593	{
1389	int fd = w->fd;	1594	int fd = w->fd;
1390		1595
1391	if (expect_false (ev_is_active (w)))	1596	if (expect_false (ev_is_active (w)))
1392	return;	1597	return;
1393		1598
1394	assert (("ev_io_start called with negative fd", fd >= 0));	1599	assert (("ev_io_start called with negative fd", fd >= 0));
1395		1600
1396	ev_start (EV_A_ (W)w, 1);	1601	ev_start (EV_A_ (W)w, 1);
1397	array_needsize (ANFD, anfds, anfdmax, fd + 1, anfds_init);	1602	array_needsize (ANFD, anfds, anfdmax, fd + 1, anfds_init);
1398	wlist_add ((WL *)&anfds[fd].head, (WL)w);	1603	wlist_add (&anfds[fd].head, (WL)w);
1399		1604
1400	fd_change (EV_A_ fd);	1605	fd_change (EV_A_ fd, w->events & EV_IOFDSET);
		1606	w->events &= ~ EV_IOFDSET;
1401	}	1607	}
1402		1608
1403	void	1609	void noinline
1404	ev_io_stop (EV_P_ struct ev_io *w)	1610	ev_io_stop (EV_P_ ev_io *w)
1405	{	1611	{
1406	ev_clear_pending (EV_A_ (W)w);	1612	clear_pending (EV_A_ (W)w);
1407	if (expect_false (!ev_is_active (w)))	1613	if (expect_false (!ev_is_active (w)))
1408	return;	1614	return;
1409		1615
1410	assert (("ev_io_start called with illegal fd (must stay constant after start!)", w->fd >= 0 && w->fd < anfdmax));	1616	assert (("ev_io_start called with illegal fd (must stay constant after start!)", w->fd >= 0 && w->fd < anfdmax));
1411		1617
1412	wlist_del ((WL *)&anfds[w->fd].head, (WL)w);	1618	wlist_del (&anfds[w->fd].head, (WL)w);
1413	ev_stop (EV_A_ (W)w);	1619	ev_stop (EV_A_ (W)w);
1414		1620
1415	fd_change (EV_A_ w->fd);	1621	fd_change (EV_A_ w->fd, 0);
1416	}	1622	}
1417		1623
1418	void	1624	void noinline
1419	ev_timer_start (EV_P_ struct ev_timer *w)	1625	ev_timer_start (EV_P_ ev_timer *w)
1420	{	1626	{
1421	if (expect_false (ev_is_active (w)))	1627	if (expect_false (ev_is_active (w)))
1422	return;	1628	return;
1423		1629
1424	((WT)w)->at += mn_now;	1630	((WT)w)->at += mn_now;
1425		1631
1426	assert (("ev_timer_start called with negative timer repeat value", w->repeat >= 0.));	1632	assert (("ev_timer_start called with negative timer repeat value", w->repeat >= 0.));
1427		1633
1428	ev_start (EV_A_ (W)w, ++timercnt);	1634	ev_start (EV_A_ (W)w, ++timercnt);
1429	array_needsize (struct ev_timer *, timers, timermax, timercnt, EMPTY2);	1635	array_needsize (WT, timers, timermax, timercnt, EMPTY2);
1430	timers [timercnt - 1] = w;	1636	timers [timercnt - 1] = (WT)w;
1431	upheap ((WT *)timers, timercnt - 1);	1637	upheap (timers, timercnt - 1);
1432		1638
1433	assert (("internal timer heap corruption", timers [((W)w)->active - 1] == w));	1639	/*assert (("internal timer heap corruption", timers [((W)w)->active - 1] == w));*/
1434	}	1640	}
1435		1641
1436	void	1642	void noinline
1437	ev_timer_stop (EV_P_ struct ev_timer *w)	1643	ev_timer_stop (EV_P_ ev_timer *w)
1438	{	1644	{
1439	ev_clear_pending (EV_A_ (W)w);	1645	clear_pending (EV_A_ (W)w);
1440	if (expect_false (!ev_is_active (w)))	1646	if (expect_false (!ev_is_active (w)))
1441	return;	1647	return;
1442		1648
1443	assert (("internal timer heap corruption", timers [((W)w)->active - 1] == w));	1649	assert (("internal timer heap corruption", timers [((W)w)->active - 1] == (WT)w));
1444		1650
		1651	{
		1652	int active = ((W)w)->active;
		1653
1445	if (expect_true (((W)w)->active < timercnt--))	1654	if (expect_true (--active < --timercnt))
1446	{	1655	{
1447	timers [((W)w)->active - 1] = timers [timercnt];	1656	timers [active] = timers [timercnt];
1448	adjustheap ((WT *)timers, timercnt, ((W)w)->active - 1);	1657	adjustheap (timers, timercnt, active);
1449	}	1658	}
		1659	}
1450		1660
1451	((WT)w)->at -= mn_now;	1661	((WT)w)->at -= mn_now;
1452		1662
1453	ev_stop (EV_A_ (W)w);	1663	ev_stop (EV_A_ (W)w);
1454	}	1664	}
1455		1665
1456	void	1666	void noinline
1457	ev_timer_again (EV_P_ struct ev_timer *w)	1667	ev_timer_again (EV_P_ ev_timer *w)
1458	{	1668	{
1459	if (ev_is_active (w))	1669	if (ev_is_active (w))
1460	{	1670	{
1461	if (w->repeat)	1671	if (w->repeat)
1462	{	1672	{
1463	((WT)w)->at = mn_now + w->repeat;	1673	((WT)w)->at = mn_now + w->repeat;
1464	adjustheap ((WT *)timers, timercnt, ((W)w)->active - 1);	1674	adjustheap (timers, timercnt, ((W)w)->active - 1);
1465	}	1675	}
1466	else	1676	else
1467	ev_timer_stop (EV_A_ w);	1677	ev_timer_stop (EV_A_ w);
1468	}	1678	}
1469	else if (w->repeat)	1679	else if (w->repeat)
…		…
1471	w->at = w->repeat;	1681	w->at = w->repeat;
1472	ev_timer_start (EV_A_ w);	1682	ev_timer_start (EV_A_ w);
1473	}	1683	}
1474	}	1684	}
1475		1685
1476	#if EV_PERIODICS	1686	#if EV_PERIODIC_ENABLE
1477	void	1687	void noinline
1478	ev_periodic_start (EV_P_ struct ev_periodic *w)	1688	ev_periodic_start (EV_P_ ev_periodic *w)
1479	{	1689	{
1480	if (expect_false (ev_is_active (w)))	1690	if (expect_false (ev_is_active (w)))
1481	return;	1691	return;
1482		1692
1483	if (w->reschedule_cb)	1693	if (w->reschedule_cb)
1484	((WT)w)->at = w->reschedule_cb (w, ev_rt_now);	1694	((WT)w)->at = w->reschedule_cb (w, ev_rt_now);
1485	else if (w->interval)	1695	else if (w->interval)
1486	{	1696	{
1487	assert (("ev_periodic_start called with negative interval value", w->interval >= 0.));	1697	assert (("ev_periodic_start called with negative interval value", w->interval >= 0.));
1488	/* this formula differs from the one in periodic_reify because we do not always round up */	1698	/* this formula differs from the one in periodic_reify because we do not always round up */
1489	((WT)w)->at += ceil ((ev_rt_now - ((WT)w)->at) / w->interval) * w->interval;	1699	((WT)w)->at = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval;
1490	}	1700	}
		1701	else
		1702	((WT)w)->at = w->offset;
1491		1703
1492	ev_start (EV_A_ (W)w, ++periodiccnt);	1704	ev_start (EV_A_ (W)w, ++periodiccnt);
1493	array_needsize (struct ev_periodic *, periodics, periodicmax, periodiccnt, EMPTY2);	1705	array_needsize (WT, periodics, periodicmax, periodiccnt, EMPTY2);
1494	periodics [periodiccnt - 1] = w;	1706	periodics [periodiccnt - 1] = (WT)w;
1495	upheap ((WT *)periodics, periodiccnt - 1);	1707	upheap (periodics, periodiccnt - 1);
1496		1708
1497	assert (("internal periodic heap corruption", periodics [((W)w)->active - 1] == w));	1709	/*assert (("internal periodic heap corruption", periodics [((W)w)->active - 1] == w));*/
1498	}	1710	}
1499		1711
1500	void	1712	void noinline
1501	ev_periodic_stop (EV_P_ struct ev_periodic *w)	1713	ev_periodic_stop (EV_P_ ev_periodic *w)
1502	{	1714	{
1503	ev_clear_pending (EV_A_ (W)w);	1715	clear_pending (EV_A_ (W)w);
1504	if (expect_false (!ev_is_active (w)))	1716	if (expect_false (!ev_is_active (w)))
1505	return;	1717	return;
1506		1718
1507	assert (("internal periodic heap corruption", periodics [((W)w)->active - 1] == w));	1719	assert (("internal periodic heap corruption", periodics [((W)w)->active - 1] == (WT)w));
1508		1720
		1721	{
		1722	int active = ((W)w)->active;
		1723
1509	if (expect_true (((W)w)->active < periodiccnt--))	1724	if (expect_true (--active < --periodiccnt))
1510	{	1725	{
1511	periodics [((W)w)->active - 1] = periodics [periodiccnt];	1726	periodics [active] = periodics [periodiccnt];
1512	adjustheap ((WT *)periodics, periodiccnt, ((W)w)->active - 1);	1727	adjustheap (periodics, periodiccnt, active);
1513	}	1728	}
		1729	}
1514		1730
1515	ev_stop (EV_A_ (W)w);	1731	ev_stop (EV_A_ (W)w);
1516	}	1732	}
1517		1733
1518	void	1734	void noinline
1519	ev_periodic_again (EV_P_ struct ev_periodic *w)	1735	ev_periodic_again (EV_P_ ev_periodic *w)
1520	{	1736	{
1521	/* TODO: use adjustheap and recalculation */	1737	/* TODO: use adjustheap and recalculation */
1522	ev_periodic_stop (EV_A_ w);	1738	ev_periodic_stop (EV_A_ w);
1523	ev_periodic_start (EV_A_ w);	1739	ev_periodic_start (EV_A_ w);
1524	}	1740	}
1525	#endif	1741	#endif
1526		1742
1527	void
1528	ev_idle_start (EV_P_ struct ev_idle *w)
1529	{
1530	if (expect_false (ev_is_active (w)))
1531	return;
1532
1533	ev_start (EV_A_ (W)w, ++idlecnt);
1534	array_needsize (struct ev_idle *, idles, idlemax, idlecnt, EMPTY2);
1535	idles [idlecnt - 1] = w;
1536	}
1537
1538	void
1539	ev_idle_stop (EV_P_ struct ev_idle *w)
1540	{
1541	ev_clear_pending (EV_A_ (W)w);
1542	if (expect_false (!ev_is_active (w)))
1543	return;
1544
1545	idles [((W)w)->active - 1] = idles [--idlecnt];
1546	ev_stop (EV_A_ (W)w);
1547	}
1548
1549	void
1550	ev_prepare_start (EV_P_ struct ev_prepare *w)
1551	{
1552	if (expect_false (ev_is_active (w)))
1553	return;
1554
1555	ev_start (EV_A_ (W)w, ++preparecnt);
1556	array_needsize (struct ev_prepare *, prepares, preparemax, preparecnt, EMPTY2);
1557	prepares [preparecnt - 1] = w;
1558	}
1559
1560	void
1561	ev_prepare_stop (EV_P_ struct ev_prepare *w)
1562	{
1563	ev_clear_pending (EV_A_ (W)w);
1564	if (expect_false (!ev_is_active (w)))
1565	return;
1566
1567	prepares [((W)w)->active - 1] = prepares [--preparecnt];
1568	ev_stop (EV_A_ (W)w);
1569	}
1570
1571	void
1572	ev_check_start (EV_P_ struct ev_check *w)
1573	{
1574	if (expect_false (ev_is_active (w)))
1575	return;
1576
1577	ev_start (EV_A_ (W)w, ++checkcnt);
1578	array_needsize (struct ev_check *, checks, checkmax, checkcnt, EMPTY2);
1579	checks [checkcnt - 1] = w;
1580	}
1581
1582	void
1583	ev_check_stop (EV_P_ struct ev_check *w)
1584	{
1585	ev_clear_pending (EV_A_ (W)w);
1586	if (expect_false (!ev_is_active (w)))
1587	return;
1588
1589	checks [((W)w)->active - 1] = checks [--checkcnt];
1590	ev_stop (EV_A_ (W)w);
1591	}
1592
1593	#ifndef SA_RESTART	1743	#ifndef SA_RESTART
1594	# define SA_RESTART 0	1744	# define SA_RESTART 0
1595	#endif	1745	#endif
1596		1746
1597	void	1747	void noinline
1598	ev_signal_start (EV_P_ struct ev_signal *w)	1748	ev_signal_start (EV_P_ ev_signal *w)
1599	{	1749	{
1600	#if EV_MULTIPLICITY	1750	#if EV_MULTIPLICITY
1601	assert (("signal watchers are only supported in the default loop", loop == ev_default_loop_ptr));	1751	assert (("signal watchers are only supported in the default loop", loop == ev_default_loop_ptr));
1602	#endif	1752	#endif
1603	if (expect_false (ev_is_active (w)))	1753	if (expect_false (ev_is_active (w)))
1604	return;	1754	return;
1605		1755
1606	assert (("ev_signal_start called with illegal signal number", w->signum > 0));	1756	assert (("ev_signal_start called with illegal signal number", w->signum > 0));
1607		1757
		1758	{
		1759	#ifndef _WIN32
		1760	sigset_t full, prev;
		1761	sigfillset (&full);
		1762	sigprocmask (SIG_SETMASK, &full, &prev);
		1763	#endif
		1764
		1765	array_needsize (ANSIG, signals, signalmax, w->signum, signals_init);
		1766
		1767	#ifndef _WIN32
		1768	sigprocmask (SIG_SETMASK, &prev, 0);
		1769	#endif
		1770	}
		1771
1608	ev_start (EV_A_ (W)w, 1);	1772	ev_start (EV_A_ (W)w, 1);
1609	array_needsize (ANSIG, signals, signalmax, w->signum, signals_init);
1610	wlist_add ((WL *)&signals [w->signum - 1].head, (WL)w);	1773	wlist_add (&signals [w->signum - 1].head, (WL)w);
1611		1774
1612	if (!((WL)w)->next)	1775	if (!((WL)w)->next)
1613	{	1776	{
1614	#if _WIN32	1777	#if _WIN32
1615	signal (w->signum, sighandler);	1778	signal (w->signum, sighandler);
…		…
1621	sigaction (w->signum, &sa, 0);	1784	sigaction (w->signum, &sa, 0);
1622	#endif	1785	#endif
1623	}	1786	}
1624	}	1787	}
1625		1788
1626	void	1789	void noinline
1627	ev_signal_stop (EV_P_ struct ev_signal *w)	1790	ev_signal_stop (EV_P_ ev_signal *w)
1628	{	1791	{
1629	ev_clear_pending (EV_A_ (W)w);	1792	clear_pending (EV_A_ (W)w);
1630	if (expect_false (!ev_is_active (w)))	1793	if (expect_false (!ev_is_active (w)))
1631	return;	1794	return;
1632		1795
1633	wlist_del ((WL *)&signals [w->signum - 1].head, (WL)w);	1796	wlist_del (&signals [w->signum - 1].head, (WL)w);
1634	ev_stop (EV_A_ (W)w);	1797	ev_stop (EV_A_ (W)w);
1635		1798
1636	if (!signals [w->signum - 1].head)	1799	if (!signals [w->signum - 1].head)
1637	signal (w->signum, SIG_DFL);	1800	signal (w->signum, SIG_DFL);
1638	}	1801	}
1639		1802
1640	void	1803	void
1641	ev_child_start (EV_P_ struct ev_child *w)	1804	ev_child_start (EV_P_ ev_child *w)
1642	{	1805	{
1643	#if EV_MULTIPLICITY	1806	#if EV_MULTIPLICITY
1644	assert (("child watchers are only supported in the default loop", loop == ev_default_loop_ptr));	1807	assert (("child watchers are only supported in the default loop", loop == ev_default_loop_ptr));
1645	#endif	1808	#endif
1646	if (expect_false (ev_is_active (w)))	1809	if (expect_false (ev_is_active (w)))
1647	return;	1810	return;
1648		1811
1649	ev_start (EV_A_ (W)w, 1);	1812	ev_start (EV_A_ (W)w, 1);
1650	wlist_add ((WL *)&childs [w->pid & (PID_HASHSIZE - 1)], (WL)w);	1813	wlist_add (&childs [w->pid & (EV_PID_HASHSIZE - 1)], (WL)w);
1651	}	1814	}
1652		1815
1653	void	1816	void
1654	ev_child_stop (EV_P_ struct ev_child *w)	1817	ev_child_stop (EV_P_ ev_child *w)
1655	{	1818	{
1656	ev_clear_pending (EV_A_ (W)w);	1819	clear_pending (EV_A_ (W)w);
1657	if (expect_false (!ev_is_active (w)))	1820	if (expect_false (!ev_is_active (w)))
1658	return;	1821	return;
1659		1822
1660	wlist_del ((WL *)&childs [w->pid & (PID_HASHSIZE - 1)], (WL)w);	1823	wlist_del (&childs [w->pid & (EV_PID_HASHSIZE - 1)], (WL)w);
1661	ev_stop (EV_A_ (W)w);	1824	ev_stop (EV_A_ (W)w);
1662	}	1825	}
1663		1826
		1827	#if EV_STAT_ENABLE
		1828
		1829	# ifdef _WIN32
		1830	# undef lstat
		1831	# define lstat(a,b) _stati64 (a,b)
		1832	# endif
		1833
		1834	#define DEF_STAT_INTERVAL 5.0074891
		1835	#define MIN_STAT_INTERVAL 0.1074891
		1836
		1837	static void noinline stat_timer_cb (EV_P_ ev_timer *w_, int revents);
		1838
		1839	#if EV_USE_INOTIFY
		1840	# define EV_INOTIFY_BUFSIZE 8192
		1841
		1842	static void noinline
		1843	infy_add (EV_P_ ev_stat *w)
		1844	{
		1845	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);
		1846
		1847	if (w->wd < 0)
		1848	{
		1849	ev_timer_start (EV_A_ &w->timer); /* this is not race-free, so we still need to recheck periodically */
		1850
		1851	/* monitor some parent directory for speedup hints */
		1852	if ((errno == ENOENT || errno == EACCES) && strlen (w->path) < 4096)
		1853	{
		1854	char path [4096];
		1855	strcpy (path, w->path);
		1856
		1857	do
		1858	{
		1859	int mask = IN_MASK_ADD | IN_DELETE_SELF | IN_MOVE_SELF
		1860	| (errno == EACCES ? IN_ATTRIB : IN_CREATE | IN_MOVED_TO);
		1861
		1862	char *pend = strrchr (path, '/');
		1863
		1864	if (!pend)
		1865	break; /* whoops, no '/', complain to your admin */
		1866
		1867	*pend = 0;
		1868	w->wd = inotify_add_watch (fs_fd, path, mask);
		1869	}
		1870	while (w->wd < 0 && (errno == ENOENT || errno == EACCES));
		1871	}
		1872	}
		1873	else
		1874	ev_timer_stop (EV_A_ &w->timer); /* we can watch this in a race-free way */
		1875
		1876	if (w->wd >= 0)
		1877	wlist_add (&fs_hash [w->wd & (EV_INOTIFY_HASHSIZE - 1)].head, (WL)w);
		1878	}
		1879
		1880	static void noinline
		1881	infy_del (EV_P_ ev_stat *w)
		1882	{
		1883	int slot;
		1884	int wd = w->wd;
		1885
		1886	if (wd < 0)
		1887	return;
		1888
		1889	w->wd = -2;
		1890	slot = wd & (EV_INOTIFY_HASHSIZE - 1);
		1891	wlist_del (&fs_hash [slot].head, (WL)w);
		1892
		1893	/* remove this watcher, if others are watching it, they will rearm */
		1894	inotify_rm_watch (fs_fd, wd);
		1895	}
		1896
		1897	static void noinline
		1898	infy_wd (EV_P_ int slot, int wd, struct inotify_event *ev)
		1899	{
		1900	if (slot < 0)
		1901	/* overflow, need to check for all hahs slots */
		1902	for (slot = 0; slot < EV_INOTIFY_HASHSIZE; ++slot)
		1903	infy_wd (EV_A_ slot, wd, ev);
		1904	else
		1905	{
		1906	WL w_;
		1907
		1908	for (w_ = fs_hash [slot & (EV_INOTIFY_HASHSIZE - 1)].head; w_; )
		1909	{
		1910	ev_stat *w = (ev_stat *)w_;
		1911	w_ = w_->next; /* lets us remove this watcher and all before it */
		1912
		1913	if (w->wd == wd || wd == -1)
		1914	{
		1915	if (ev->mask & (IN_IGNORED | IN_UNMOUNT | IN_DELETE_SELF))
		1916	{
		1917	w->wd = -1;
		1918	infy_add (EV_A_ w); /* re-add, no matter what */
		1919	}
		1920
		1921	stat_timer_cb (EV_A_ &w->timer, 0);
		1922	}
		1923	}
		1924	}
		1925	}
		1926
		1927	static void
		1928	infy_cb (EV_P_ ev_io *w, int revents)
		1929	{
		1930	char buf [EV_INOTIFY_BUFSIZE];
		1931	struct inotify_event *ev = (struct inotify_event *)buf;
		1932	int ofs;
		1933	int len = read (fs_fd, buf, sizeof (buf));
		1934
		1935	for (ofs = 0; ofs < len; ofs += sizeof (struct inotify_event) + ev->len)
		1936	infy_wd (EV_A_ ev->wd, ev->wd, ev);
		1937	}
		1938
		1939	void inline_size
		1940	infy_init (EV_P)
		1941	{
		1942	if (fs_fd != -2)
		1943	return;
		1944
		1945	fs_fd = inotify_init ();
		1946
		1947	if (fs_fd >= 0)
		1948	{
		1949	ev_io_init (&fs_w, infy_cb, fs_fd, EV_READ);
		1950	ev_set_priority (&fs_w, EV_MAXPRI);
		1951	ev_io_start (EV_A_ &fs_w);
		1952	}
		1953	}
		1954
		1955	void inline_size
		1956	infy_fork (EV_P)
		1957	{
		1958	int slot;
		1959
		1960	if (fs_fd < 0)
		1961	return;
		1962
		1963	close (fs_fd);
		1964	fs_fd = inotify_init ();
		1965
		1966	for (slot = 0; slot < EV_INOTIFY_HASHSIZE; ++slot)
		1967	{
		1968	WL w_ = fs_hash [slot].head;
		1969	fs_hash [slot].head = 0;
		1970
		1971	while (w_)
		1972	{
		1973	ev_stat *w = (ev_stat *)w_;
		1974	w_ = w_->next; /* lets us add this watcher */
		1975
		1976	w->wd = -1;
		1977
		1978	if (fs_fd >= 0)
		1979	infy_add (EV_A_ w); /* re-add, no matter what */
		1980	else
		1981	ev_timer_start (EV_A_ &w->timer);
		1982	}
		1983
		1984	}
		1985	}
		1986
		1987	#endif
		1988
		1989	void
		1990	ev_stat_stat (EV_P_ ev_stat *w)
		1991	{
		1992	if (lstat (w->path, &w->attr) < 0)
		1993	w->attr.st_nlink = 0;
		1994	else if (!w->attr.st_nlink)
		1995	w->attr.st_nlink = 1;
		1996	}
		1997
		1998	static void noinline
		1999	stat_timer_cb (EV_P_ ev_timer *w_, int revents)
		2000	{
		2001	ev_stat *w = (ev_stat *)(((char *)w_) - offsetof (ev_stat, timer));
		2002
		2003	/* we copy this here each the time so that */
		2004	/* prev has the old value when the callback gets invoked */
		2005	w->prev = w->attr;
		2006	ev_stat_stat (EV_A_ w);
		2007
		2008	/* memcmp doesn't work on netbsd, they.... do stuff to their struct stat */
		2009	if (
		2010	w->prev.st_dev != w->attr.st_dev
		2011	|| w->prev.st_ino != w->attr.st_ino
		2012	|| w->prev.st_mode != w->attr.st_mode
		2013	|| w->prev.st_nlink != w->attr.st_nlink
		2014	|| w->prev.st_uid != w->attr.st_uid
		2015	|| w->prev.st_gid != w->attr.st_gid
		2016	|| w->prev.st_rdev != w->attr.st_rdev
		2017	|| w->prev.st_size != w->attr.st_size
		2018	|| w->prev.st_atime != w->attr.st_atime
		2019	|| w->prev.st_mtime != w->attr.st_mtime
		2020	|| w->prev.st_ctime != w->attr.st_ctime
		2021	) {
		2022	#if EV_USE_INOTIFY
		2023	infy_del (EV_A_ w);
		2024	infy_add (EV_A_ w);
		2025	ev_stat_stat (EV_A_ w); /* avoid race... */
		2026	#endif
		2027
		2028	ev_feed_event (EV_A_ w, EV_STAT);
		2029	}
		2030	}
		2031
		2032	void
		2033	ev_stat_start (EV_P_ ev_stat *w)
		2034	{
		2035	if (expect_false (ev_is_active (w)))
		2036	return;
		2037
		2038	/* since we use memcmp, we need to clear any padding data etc. */
		2039	memset (&w->prev, 0, sizeof (ev_statdata));
		2040	memset (&w->attr, 0, sizeof (ev_statdata));
		2041
		2042	ev_stat_stat (EV_A_ w);
		2043
		2044	if (w->interval < MIN_STAT_INTERVAL)
		2045	w->interval = w->interval ? MIN_STAT_INTERVAL : DEF_STAT_INTERVAL;
		2046
		2047	ev_timer_init (&w->timer, stat_timer_cb, w->interval, w->interval);
		2048	ev_set_priority (&w->timer, ev_priority (w));
		2049
		2050	#if EV_USE_INOTIFY
		2051	infy_init (EV_A);
		2052
		2053	if (fs_fd >= 0)
		2054	infy_add (EV_A_ w);
		2055	else
		2056	#endif
		2057	ev_timer_start (EV_A_ &w->timer);
		2058
		2059	ev_start (EV_A_ (W)w, 1);
		2060	}
		2061
		2062	void
		2063	ev_stat_stop (EV_P_ ev_stat *w)
		2064	{
		2065	clear_pending (EV_A_ (W)w);
		2066	if (expect_false (!ev_is_active (w)))
		2067	return;
		2068
		2069	#if EV_USE_INOTIFY
		2070	infy_del (EV_A_ w);
		2071	#endif
		2072	ev_timer_stop (EV_A_ &w->timer);
		2073
		2074	ev_stop (EV_A_ (W)w);
		2075	}
		2076	#endif
		2077
		2078	#if EV_IDLE_ENABLE
		2079	void
		2080	ev_idle_start (EV_P_ ev_idle *w)
		2081	{
		2082	if (expect_false (ev_is_active (w)))
		2083	return;
		2084
		2085	pri_adjust (EV_A_ (W)w);
		2086
		2087	{
		2088	int active = ++idlecnt [ABSPRI (w)];
		2089
		2090	++idleall;
		2091	ev_start (EV_A_ (W)w, active);
		2092
		2093	array_needsize (ev_idle *, idles [ABSPRI (w)], idlemax [ABSPRI (w)], active, EMPTY2);
		2094	idles [ABSPRI (w)][active - 1] = w;
		2095	}
		2096	}
		2097
		2098	void
		2099	ev_idle_stop (EV_P_ ev_idle *w)
		2100	{
		2101	clear_pending (EV_A_ (W)w);
		2102	if (expect_false (!ev_is_active (w)))
		2103	return;
		2104
		2105	{
		2106	int active = ((W)w)->active;
		2107
		2108	idles [ABSPRI (w)][active - 1] = idles [ABSPRI (w)][--idlecnt [ABSPRI (w)]];
		2109	((W)idles [ABSPRI (w)][active - 1])->active = active;
		2110
		2111	ev_stop (EV_A_ (W)w);
		2112	--idleall;
		2113	}
		2114	}
		2115	#endif
		2116
		2117	void
		2118	ev_prepare_start (EV_P_ ev_prepare *w)
		2119	{
		2120	if (expect_false (ev_is_active (w)))
		2121	return;
		2122
		2123	ev_start (EV_A_ (W)w, ++preparecnt);
		2124	array_needsize (ev_prepare *, prepares, preparemax, preparecnt, EMPTY2);
		2125	prepares [preparecnt - 1] = w;
		2126	}
		2127
		2128	void
		2129	ev_prepare_stop (EV_P_ ev_prepare *w)
		2130	{
		2131	clear_pending (EV_A_ (W)w);
		2132	if (expect_false (!ev_is_active (w)))
		2133	return;
		2134
		2135	{
		2136	int active = ((W)w)->active;
		2137	prepares [active - 1] = prepares [--preparecnt];
		2138	((W)prepares [active - 1])->active = active;
		2139	}
		2140
		2141	ev_stop (EV_A_ (W)w);
		2142	}
		2143
		2144	void
		2145	ev_check_start (EV_P_ ev_check *w)
		2146	{
		2147	if (expect_false (ev_is_active (w)))
		2148	return;
		2149
		2150	ev_start (EV_A_ (W)w, ++checkcnt);
		2151	array_needsize (ev_check *, checks, checkmax, checkcnt, EMPTY2);
		2152	checks [checkcnt - 1] = w;
		2153	}
		2154
		2155	void
		2156	ev_check_stop (EV_P_ ev_check *w)
		2157	{
		2158	clear_pending (EV_A_ (W)w);
		2159	if (expect_false (!ev_is_active (w)))
		2160	return;
		2161
		2162	{
		2163	int active = ((W)w)->active;
		2164	checks [active - 1] = checks [--checkcnt];
		2165	((W)checks [active - 1])->active = active;
		2166	}
		2167
		2168	ev_stop (EV_A_ (W)w);
		2169	}
		2170
		2171	#if EV_EMBED_ENABLE
		2172	void noinline
		2173	ev_embed_sweep (EV_P_ ev_embed *w)
		2174	{
		2175	ev_loop (w->loop, EVLOOP_NONBLOCK);
		2176	}
		2177
		2178	static void
		2179	embed_cb (EV_P_ ev_io *io, int revents)
		2180	{
		2181	ev_embed *w = (ev_embed *)(((char *)io) - offsetof (ev_embed, io));
		2182
		2183	if (ev_cb (w))
		2184	ev_feed_event (EV_A_ (W)w, EV_EMBED);
		2185	else
		2186	ev_embed_sweep (loop, w);
		2187	}
		2188
		2189	void
		2190	ev_embed_start (EV_P_ ev_embed *w)
		2191	{
		2192	if (expect_false (ev_is_active (w)))
		2193	return;
		2194
		2195	{
		2196	struct ev_loop *loop = w->loop;
		2197	assert (("loop to be embedded is not embeddable", backend & ev_embeddable_backends ()));
		2198	ev_io_init (&w->io, embed_cb, backend_fd, EV_READ);
		2199	}
		2200
		2201	ev_set_priority (&w->io, ev_priority (w));
		2202	ev_io_start (EV_A_ &w->io);
		2203
		2204	ev_start (EV_A_ (W)w, 1);
		2205	}
		2206
		2207	void
		2208	ev_embed_stop (EV_P_ ev_embed *w)
		2209	{
		2210	clear_pending (EV_A_ (W)w);
		2211	if (expect_false (!ev_is_active (w)))
		2212	return;
		2213
		2214	ev_io_stop (EV_A_ &w->io);
		2215
		2216	ev_stop (EV_A_ (W)w);
		2217	}
		2218	#endif
		2219
		2220	#if EV_FORK_ENABLE
		2221	void
		2222	ev_fork_start (EV_P_ ev_fork *w)
		2223	{
		2224	if (expect_false (ev_is_active (w)))
		2225	return;
		2226
		2227	ev_start (EV_A_ (W)w, ++forkcnt);
		2228	array_needsize (ev_fork *, forks, forkmax, forkcnt, EMPTY2);
		2229	forks [forkcnt - 1] = w;
		2230	}
		2231
		2232	void
		2233	ev_fork_stop (EV_P_ ev_fork *w)
		2234	{
		2235	clear_pending (EV_A_ (W)w);
		2236	if (expect_false (!ev_is_active (w)))
		2237	return;
		2238
		2239	{
		2240	int active = ((W)w)->active;
		2241	forks [active - 1] = forks [--forkcnt];
		2242	((W)forks [active - 1])->active = active;
		2243	}
		2244
		2245	ev_stop (EV_A_ (W)w);
		2246	}
		2247	#endif
		2248
1664	/*****************************************************************************/	2249	/*****************************************************************************/
1665		2250
1666	struct ev_once	2251	struct ev_once
1667	{	2252	{
1668	struct ev_io io;	2253	ev_io io;
1669	struct ev_timer to;	2254	ev_timer to;
1670	void (*cb)(int revents, void *arg);	2255	void (*cb)(int revents, void *arg);
1671	void *arg;	2256	void *arg;
1672	};	2257	};
1673		2258
1674	static void	2259	static void
…		…
1683		2268
1684	cb (revents, arg);	2269	cb (revents, arg);
1685	}	2270	}
1686		2271
1687	static void	2272	static void
1688	once_cb_io (EV_P_ struct ev_io *w, int revents)	2273	once_cb_io (EV_P_ ev_io *w, int revents)
1689	{	2274	{
1690	once_cb (EV_A_ (struct ev_once *)(((char *)w) - offsetof (struct ev_once, io)), revents);	2275	once_cb (EV_A_ (struct ev_once *)(((char *)w) - offsetof (struct ev_once, io)), revents);
1691	}	2276	}
1692		2277
1693	static void	2278	static void
1694	once_cb_to (EV_P_ struct ev_timer *w, int revents)	2279	once_cb_to (EV_P_ ev_timer *w, int revents)
1695	{	2280	{
1696	once_cb (EV_A_ (struct ev_once *)(((char *)w) - offsetof (struct ev_once, to)), revents);	2281	once_cb (EV_A_ (struct ev_once *)(((char *)w) - offsetof (struct ev_once, to)), revents);
1697	}	2282	}
1698		2283
1699	void	2284	void

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